WO2020124593A1 - Mécanisme de suspension, dispositif de levage et d'abaissement et véhicule - Google Patents

Mécanisme de suspension, dispositif de levage et d'abaissement et véhicule Download PDF

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Publication number
WO2020124593A1
WO2020124593A1 PCT/CN2018/122842 CN2018122842W WO2020124593A1 WO 2020124593 A1 WO2020124593 A1 WO 2020124593A1 CN 2018122842 W CN2018122842 W CN 2018122842W WO 2020124593 A1 WO2020124593 A1 WO 2020124593A1
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WO
WIPO (PCT)
Prior art keywords
arm
suspension
chassis
hinged
lifting device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/122842
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English (en)
Chinese (zh)
Inventor
包玉奇
任冠男
刘玉洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SZ DJI Technology Co Ltd
Original Assignee
SZ DJI Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SZ DJI Technology Co Ltd filed Critical SZ DJI Technology Co Ltd
Priority to PCT/CN2018/122842 priority Critical patent/WO2020124593A1/fr
Priority to CN201880072127.0A priority patent/CN111315600A/zh
Publication of WO2020124593A1 publication Critical patent/WO2020124593A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/005—Suspension locking arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D63/00—Motor vehicles or trailers not otherwise provided for
    • B62D63/02—Motor vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D63/00—Motor vehicles or trailers not otherwise provided for
    • B62D63/02—Motor vehicles
    • B62D63/04—Component parts or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/422—Driving wheels or live axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/42—Electric actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance

Definitions

  • the invention relates to a suspension mechanism, a lifting device and a vehicle, and belongs to the technical field of image shooting auxiliary equipment.
  • a gimbal equipped with a gimbal and a camera will be used for remote shooting and first-angle driving to shoot a special angle of view.
  • Existing gimbals generally connect the chassis and the wheel axles of the wheel sets together, so that the chassis can be driven to rotate by driving the wheel set to adjust the center of gravity of the gimbal, so as to reduce the possibility of the tipping of the gimbal .
  • this method of rotating the chassis to move up and down cannot achieve self-locking, and the force may sometimes be unbalanced.
  • embodiments of the present invention provide a vehicle and its lifting device.
  • a suspension mechanism for connecting a wheel set and a chassis of a vehicle including: a first part and a second part; one of the first part and the second part is connected to the chassis, The other one of the first part and the second part is rotatably connected to the axle of the wheel set; at least one of the first part and the second part can rotate relative to a rotation axis to drive the chassis to move up and down; Wherein, the rotation axis is parallel to the central axis of the wheel axle.
  • a lifting device including: a multi-link mechanism, a deformation driving mechanism, and a suspension mechanism;
  • the suspension mechanism includes: a first part and a second part, wherein the first part and the second part At least one can rotate relative to a rotation axis; wherein, the rotation axis is parallel to the central axis of the axle;
  • the first end of the multi-link mechanism is used to articulate with the chassis, and the second end of the multi-link mechanism Articulated with one of the first part and the second part of the suspension mechanism;
  • the deformation drive mechanism is drivingly connected to the multi-link mechanism;
  • the lifting device drives the multi-link mechanism and And/or the relative rotation of the first part and the second part drives the chassis to move up and down.
  • a vehicle including: a chassis, a plurality of wheel sets, and a lifting device; the lifting device includes: a multi-link mechanism, a deformation driving mechanism, and a suspension mechanism; the plurality of wheel sets are respectively Set on opposite sides of the chassis; the wheel set includes: a wheel axle and a wheel sleeved on the wheel axle; the suspension mechanism is adapted to the number of the wheel set; the suspension mechanism includes: A first part and a second part, at least one of the first part and the second part can rotate relative to a rotation axis to drive the chassis to move up and down; wherein the rotation axis is parallel to the central axis of the axle; Each axle is rotatably connected to the corresponding first or second part of the suspension mechanism; the first end of the multi-link mechanism is hinged to the chassis, and the second end of the multi-link mechanism is One of the first part and the second part of the suspension mechanism is hinged; the deformation drive mechanism is drive-connected with the
  • the first part and the second part of the suspension mechanism can be relatively rotated to realize the lifting of the chassis, thereby adjusting the center of gravity of the vehicle, In order to enable the vehicle to change the height of the chassis according to actual needs in high-speed movement, low-speed movement, climbing or other scenes according to actual needs.
  • the suspension mechanism the multi-linkage mechanism hinged with the suspension mechanism and the deformation driving mechanism, the chassis can be raised and lowered in a larger range, thereby making the adjustment range of the center of gravity of the vehicle larger.
  • FIG. 1 is a schematic diagram of a first modification of a vehicle provided by an embodiment of the present invention
  • Figure 2 is a top view of Figure 1;
  • FIG. 3 is a schematic structural diagram of a wheel set and a lifting device when the lifting device is in the first position according to an embodiment of the present invention
  • Figure 4 is a top view of Figure 3;
  • FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4;
  • FIG. 6 is a schematic structural diagram of a wheel set and a lifting device when the lifting device is in the second position according to an embodiment of the present invention
  • FIG. 7 is a top view of FIG. 6;
  • FIG. 8 is a cross-sectional view taken along line B-B in FIG. 7;
  • FIG. 9 is a schematic diagram of a second modification of the vehicle provided by an embodiment of the present invention.
  • FIG. 10 is a plan view of FIG. 9;
  • FIG. 11 is a front view of a suspension mechanism and a wheel set provided by an embodiment of the present invention.
  • 12a to 12b are explosion diagrams of FIG. 11 at different viewing angles
  • 14a to 14c are schematic diagrams of the state when the suspension mechanism provided by the embodiment of the present invention is rotated to different positions.
  • FIG. 1 is a schematic diagram of a first variant of a vehicle 10 provided by this embodiment
  • FIG. 2 is a top view of FIG. 1.
  • the vehicle 10 provided by this embodiment includes a chassis 100, a plurality of suspension mechanisms 300, a plurality of wheel sets 400 disposed under the chassis 100, and a lifting device 200.
  • a plurality of wheel sets 400 are respectively disposed on opposite sides of the chassis 100.
  • FIG. 1 and FIG. 2 illustrate a scheme in which four wheel sets 400 are arranged on the left and right sides of the chassis 100, respectively.
  • there may be more or fewer wheel sets 400 for example, two wheel sets 400, three wheel sets 400, or six wheel sets 400.
  • the even number of wheel sets 400 may be arranged on opposite sides of the chassis 100, and the other wheel set 400 may be arranged on one of the other two sides.
  • the wheel sets 400 may be arranged in a regular triangle or isosceles triangle.
  • Each wheel set 400 includes a wheel axle (not shown in the figure) and a wheel 401 sleeved on the wheel axle.
  • the wheel 401 is rotated to drive the vehicle 10 forward, backward, or turn.
  • the wheel shaft is rotatably connected to its corresponding suspension mechanism 300, which is then connected to the chassis 100 via the lifting device 200.
  • the chassis 100 can be raised and lowered by the lifting device 200, that is, the height of the chassis 100 relative to the ground can be adjusted by the lifting device 200, so as to adjust the center of gravity of the vehicle 10, thereby improving the running time of the vehicle 10 Stability to prevent the vehicle 10 from rolling over.
  • the lifting device 200 can drive the chassis 100 to move in the vertical direction, can also drive the chassis 100 to tilt, or can also drive the chassis 100 to move along a curve.
  • the specific motion track can be designed according to actual needs. In this embodiment There are no special restrictions on it.
  • the chassis 100 may be a rectangular, circular, or any other suitable plate-like, block-like, or frame-like structure.
  • a stamped steel plate may be used as the chassis 100; in other examples, in order to make the vehicle 10 lighter, the chassis 100 may be molded into a block shape using plastic.
  • the combination of metal and plastic can also be used to achieve a balance between light weight and structural strength.
  • the chassis 100 may include an upper mounting plate 110 and a lower mounting plate 120 disposed oppositely, and a receiving cavity is formed between the upper mounting plate 110 and the lower mounting plate 120 to accommodate the lifting device Part of 200.
  • various peripherals may be installed on the chassis 100.
  • an image acquisition device such as a camera 30 or a video camera may be installed on the chassis 100.
  • a gimbal 20 (including but not limited to a single-axis gimbal, a dual-axis gimbal, and a three-axis gimbal) can be installed on the chassis 100, and then an image acquisition device such as a camera 30 or a video camera can be installed on the gimbal 20 In order to enhance the stability when shooting, to avoid shaking or distortion of the shooting screen.
  • a ball launching device capable of launching bullets may be installed on the chassis 100.
  • the marble launching device may also be installed on the gimbal 20 described above, so as to improve the stability of the marble launching device, thereby improving the shooting accuracy.
  • the suspension mechanism 300 of the wheel set 400 includes two longitudinal beams 311 respectively disposed on the outside and inside of the wheel 401, and is located between and fixed to the two longitudinal beams 311.
  • the cross beam 312, that is, the shape of all or part of the suspension mechanism 300 provided in this embodiment is U-shaped, which is reversed above the wheel 401 in FIGS. 1 and 2.
  • the bottom ends of the two longitudinal beams 311 may be provided with shaft holes for the axle to pass through, so that the wheels 401 sleeved on the axle can rotate relative to the suspension mechanism 300 to drive the vehicle 10 forward, backward, and turn.
  • the wheels 401 may be configured as Mecanum wheels to allow the vehicle 10 to move more flexibly on the ground.
  • the suspension mechanism 300 includes the above-mentioned beam 312, the lifting device 200 may be hinged with the beam 312.
  • the suspension mechanism 300 is not limited to the above-mentioned structural form.
  • the suspension mechanism 300 may have only one longitudinal beam 311, and the lifting device 200 is hinged with the one longitudinal beam 311.
  • the U-shaped suspension mechanism 300 shown in FIGS. 1 and 2 will be used as an example to describe the solution of this embodiment, but this should not be regarded as a specific limitation on the technical solution. The simple replacement on the basis still belongs to the protection scope of this embodiment.
  • the lifting device 200 may be an air cylinder, a linear motor, or the like.
  • the lifting device 200 when the lifting device 200 is a cylinder, the cylinder tube of the cylinder may be fixed to the beam 312 of the suspension mechanism 300, and the piston rod of the cylinder is fixed to the bottom surface of the chassis 100 to support the chassis 100. In this way, when the height of the chassis 100 needs to be adjusted, the piston can be driven to move.
  • the lifting device 200 is a linear motor
  • the stator of the linear motor can be fixed on the beam 312 of the suspension mechanism 300, and the output shaft of the linear motor is fixed on the bottom surface of the chassis 100 to support the chassis 100.
  • the lifting device 200 may also be other separate parts or a combination of multiple separate parts, as long as it can drive the chassis 100 to move vertically.
  • the specific use of the lifting device 200 is not limited. What kind of structure. However, in order to enable those skilled in the art to better understand the technical content of this embodiment, the following will exemplarily introduce some alternative structures of the lifting device 200.
  • FIG. 3 is a schematic structural view of the wheel set and the lifting device 200 when the lifting device is in the first position provided by the embodiment;
  • FIG. 4 is a top view of FIG. 3;
  • FIG. 5 is a cross-sectional view taken along line AA in FIG. 4;
  • FIG. 6 is the embodiment Provided is a schematic structural view of the wheel set and the lifting device when the lifting device is in the second position;
  • FIG. 7 is a top view of FIG. 6;
  • FIG. 8 is a cross-sectional view taken along line BB in FIG.
  • the lifting device 200 includes a multi-link mechanism and a deformation driving mechanism.
  • the first end of the multi-link mechanism is used to articulate with the chassis 100 (please refer to FIGS. 1 and 2 ), and the second end is used to articulate with the beam 312 of the suspension mechanism 300.
  • the left end of the multi-link mechanism is hinged with the beam 312, and the right end of the multi-link mechanism is hinged with the chassis 100.
  • the deformation drive mechanism is connected to the multi-link mechanism by transmission, so that the mutual position between the links in the multi-link mechanism can be changed by the drive of the deformation drive mechanism, thereby driving the chassis 100 hinged with the multi-link mechanism to move vertically , And then change the center of gravity of the vehicle 10.
  • the deformation driving mechanism may be a manual device, such as one of the handwheels fixed in one of the multi-link mechanisms.
  • the deformation driving mechanism may also be an electric device mounted on the suspension mechanism 300 or the chassis 100, such as a chassis lifting driving motor 240 (see the detailed description below).
  • the multi-link mechanism connecting the chassis 100 and the suspension mechanism 300 is provided, and the deformation drive mechanism is used to drive the multi-link mechanism to change the relative position of the links of the multi-link mechanism, which can facilitate Adjust the height of the chassis 100 relative to the ground to prevent the vehicle 10 from rolling over. It is easy to understand that when the vehicle 10 needs to run at a high speed, or when the vehicle 10 rides on a high object, the height of the chassis 100 can be reduced by the lifting device 200 provided between the chassis 100 and the suspension mechanism 300 in order to improve the smooth running of the vehicle 10 Sex.
  • the multi-link mechanism includes: a push rod 210, a rocker arm 220 and a lifting arm 230.
  • the first end of the push rod 210 is used to articulate with the beam 312
  • the second end of the push rod 210 is hinged with the first end of the rocker arm 220
  • the second end of the rocker arm 220 is hinged with the first end of the lift arm 230
  • the second end of the lifting arm 230 is hinged with the chassis 100.
  • the bottom end of the push rod 210 is hinged with the right end of the beam 312
  • the top end of the push rod 210 is hinged with the left end of the rocker arm 220
  • the right end of the rocker arm 220 is hinged with the left end of the lifting arm 230.
  • the right end of the arm 230 is hinged with the chassis 100. It is easy to understand that by configuring the lengths of the push rod 210, the rocker arm 220, and the lift arm 230 to an appropriate ratio, the trajectory of the chassis 100 relative to the ground can be controlled, that is, in some examples, the push rod 210, rocker
  • the arm 220 and the elevating arm 230 are designed to have suitable lengths to vertically lift the chassis 100.
  • a deformation driving mechanism may be provided on the chassis 100, and the deformation driving mechanism includes: a chassis lifting driving motor 240, an upper support arm 261, and a screw 250.
  • the first end of the upper support arm 261 is hinged with the first end of the multi-link mechanism, the second end of the upper support arm 261 is fixed to the nut 252 of the screw 250, and the screw 251 of the screw 250 is used to drive the screw
  • the nut 252 of the screw 250 moves, and the nut 252 of the lead screw 250 drives the movement of the upper support arm 261, so that the movement of the upper support arm 261 drives the movement of the multi-link mechanism, thereby realizing the lifting and lowering of the chassis 100.
  • the chassis lifting drive motor 240 is fixed to the chassis 100, the screw 251 of the screw 250 is fixed to the output shaft of the chassis lifting drive motor 240, for example, welded together; the nut 252 of the screw 250 is connected to the top
  • the bottom end of the support arm 261 is fixed, and the top end of the upper support arm 261 is hinged with the lifting arm 230.
  • the chassis lifting drive motor 240 is started, and the output shaft of the chassis lifting drive motor 240 drives the screw 251 of the screw 250 to rotate, and the screw nut 252 sleeved on the screw 251 moves to the left along the axis of the screw 251 Or linear movement to the right, which will drive the upper support arm 261 to linear movement to the left or right.
  • FIG. 3 illustrates a state where the chassis 100 is at a high position relative to the ground
  • FIG. 6 illustrates a state where the chassis 100 is at a low position relative to the ground.
  • the screw rod and the upper support arm 261 of this embodiment are not necessary structures, as long as they are properly configured, in some implementable modes, these two structures can be omitted completely, and the lifting arm is directly driven by the chassis lifting drive motor 240 230 can be turned.
  • the reason why the screw 250 and the upper support arm 261 are provided in this embodiment is to consider the compact structure and the driving of the chassis lifting drive motor 240, that is, the low power motor can be used to drive the multi-connector by setting the screw 250 and the upper support arm 261.
  • the lever mechanism moves, and the overall volume of the lifting device 200 can also be reduced, that is, there is no need to configure a link with an excessively long length, which is beneficial to the compactness of the lifting device 200 and the vehicle 10.
  • the chassis lifting drive motor 240 is also an unnecessary structure.
  • the screw 251 of the screw 250 may be driven to rotate through a gear structure, a link structure, or any other suitable structure, thereby driving the nut 252 Do linear motion.
  • a handle is provided on one end of the screw 251 to drive the screw 251 to rotate by driving the handle to rotate.
  • the deformation driving mechanism may be disposed on the beam 312 of the suspension mechanism 300, and the deformation driving mechanism may also include a chassis lifting driving motor 240.
  • the output shaft of the chassis lifting drive motor 240 is inserted into the mounting hole provided by the push rod 210, and the output shaft is fixed with the push rod 210, so that the push rod 210 is driven to rotate through the output shaft, thereby driving the rocker arm 220 and lifting The arm 230 moves, thereby driving the chassis 100 connected to the lifting arm 230 to move relative to the ground, so as to change the height of the chassis 100 relative to the ground.
  • the lead screw 250 and the upper support arm 261 may also be provided as in the above example, so that the torque of the motor is transmitted to the push rod 210 through the lead screw 250 and the upper support arm 261 to realize the drive including the push rod 210, the multi-link mechanism including the rocker arm 220 and the elevating arm 230 moves, thereby driving the purpose of raising and lowering the chassis 100.
  • the chassis lifting drive motor 240, the lead screw, and the upper support arm 261 reference may be made to the above example and FIGS. 3 to 8, which will not be repeated here.
  • the lifting device 200 may further include a vibration damping mechanism 500, the first end of the vibration damping mechanism 500 is hinged with the rocker arm 220, and the vibration damping mechanism 500 The second end is fixed to the chassis 100.
  • the bottom end of the push rod 210 is hinged with the beam 312, and the top end of the push rod 210 is hinged with the left end of the elevating arm 230 and the left end of the vibration damping mechanism 500, respectively;
  • the lifting arm 230 is hinged to the top end of the upper support arm 261, and the upper support arm 261 is fixed to the nut 252 of the screw.
  • the damping mechanism 500 may be any suitable damping mechanism 500 including a damping spring.
  • the technical solution will be exemplarily described below with a damping spring.
  • the rocker arm 220 may be configured in a triangular structure, and the push rod 210, the elevating arm 230, and the damping spring are respectively hinged at three vertices of the triangular structure.
  • the top end of the push rod 210 is hinged to the left vertex of the triangular rocker arm 220, and the left end of the elevating arm 230 is hinged to the lower vertex of the triangular rocker arm 220.
  • the left end of the damping spring is connected to the triangular rocker
  • the right vertex of the arm 220 is hinged.
  • the rocker arm 220 By setting the rocker arm 220 into a triangular structure, then the push rod 210, the elevating arm 230, and the damping spring are respectively hinged at the three vertices of the triangular rocker arm 220, so that when the multi-link mechanism moves, that is, when When the chassis 100 is raised and lowered, the vibration-damping spring can always be at a relatively good working angle, so that its vibration-damping performance is not substantially reduced.
  • the above multi-link mechanism further includes a suspension 270.
  • the first end of the suspension 270 is hinged with the suspension mechanism 300, for example, the first end of the suspension 270 is hinged with the beam 312.
  • the deformation driving mechanism further includes a lower support arm 262 whose first end is hinged with the second end of the suspension 270, and the second end of the lower support arm 262 is fixed with the nut 252 of the screw 250. Taking FIG.
  • the left end of the suspension 270 is hinged with the beam 312
  • the right end of the suspension 270 is hinged with the bottom of the lower support arm 262
  • the top of the lower support arm 262 is fixed to the nut 252 of the screw 250.
  • the second end of the suspension 270 may also be directly or indirectly hinged with the multi-link mechanism, whereby the suspension 270, the multi-link mechanism, and part of the suspension mechanism form a polygonal structure, To increase the support for the chassis.
  • the output shaft of the chassis lifting drive motor 240 drives the screw 251 of the screw 250 to rotate, and accordingly, the nut 252 sleeved on the screw 251 is driven to the left or right Do linear motion. Since the nut 252 moves linearly to the left or to the right, the lower support arm 262 fixed to the nut 252 also moves linearly to the left or right, which in turn drives the suspension 270 hinged to the lower support arm 262 to rotate .
  • the suspension 270 includes: a first connection arm 271, a suspension upper arm 272, a second connection arm 273, and a suspension lower arm 274.
  • the first connecting arm 271 is fixed to the suspension mechanism 300, for example, the first connecting arm 271 is fixed to the longitudinal beam 311 located inside the wheel 401, or the first connecting arm 271 is fixed to the inner side of the crossbeam 312.
  • the second connecting arm 273 is fixed to the chassis 100, which may be directly fixed or indirectly fixed.
  • the first end of the suspension upper arm 272 is hinged with the top end of the first connecting arm 271, and the second end of the suspension upper arm 272 is hinged with the top end of the second connecting arm 273.
  • first end of the lower arm 274 of the suspension is hinged with the bottom end of the first connecting arm 271
  • second end of the lower arm 274 of the suspension is hinged with the bottom end of the second connecting arm 273.
  • first end of the lower support arm 262 is also hinged with the second connecting arm 273, for example, the first end of the lower support arm 262 is hinged with the second end of the second connecting arm 273.
  • the first connecting arm 271 is fixed to the inner side of the cross member 312. Of course, it may also extend downward to the position of the longitudinal member 311 located inside the wheel 401.
  • the second connecting arm 273 is fixed on the chassis 100 and is disposed relative to the first connecting arm 271.
  • the left end of the suspension upper arm 272 is hinged with the top end of the first connecting arm 271, and the right end of the suspension upper arm 272 is hinged with the top end of the second connecting arm 273.
  • the left end of the suspension lower arm 274 is hinged with the bottom end of the first connecting arm 271, and the right end of the suspension lower arm 274 is hinged with the bottom end of the second connecting arm 273.
  • the support capacity for the chassis 100 can be improved, and the stability of the suspension 270 during movement can be enhanced, thereby improving the stability of the chassis 100 when it is raised and lowered.
  • the first connecting arm 271, the upper suspension arm 272, the second connecting arm 273, and the lower suspension arm 274 may be combined into a parallelogram structure.
  • the angle between the suspension upper arm 272 and the suspension lower arm 274 and the horizontal plane will change accordingly.
  • the first connecting arm 271 and a part of the suspension mechanism 300 are integrally formed as one piece. Specifically, the first connecting arm 271 and the cross member 312 or the longitudinal member 311 located inside the wheel 401 may be integrally formed.
  • the first connecting arm 271 and the beam 312 of the suspension mechanism 300 are an integrally formed integral piece, the left end of the push rod 210 is not only hinged with the beam 312 of the suspension mechanism 300, but also simultaneously The top end of a connecting arm 271 is hinged.
  • the left end of the push rod 210 may also be hinged with the beam 312 and the top of the first connecting arm 271.
  • the lifting device 200 further includes a bottom plate 275 and a support frame 276.
  • the supporting frame 276 and the second connecting arm 273 are fixed on the bottom plate 275, and the supporting frame 276 is located on the side of the second connecting arm 273 away from the first connecting arm 271, and the chassis lifting drive motor 240 is installed on the supporting frame 276.
  • the chassis lifting drive motor 240 and the fixing with the chassis 100 are facilitated.
  • the lifting device 200 further includes an articulated arm 277 fixed on the bottom plate 275, the articulated arm 277 is disposed between the second connecting arm 273 and the support frame 276, and the articulated arm 277
  • the top of the is hinged with the second end of the lifting arm 230 described above.
  • a vertically upward articulated arm 277 is provided above the bottom plate 275, and the top end of the articulated arm 277 is articulated with the right end of the extended lifting arm 230.
  • the upper support arm 261 can also be hinged with the right end of the lifting arm 230, but in some examples, as shown in FIGS.
  • the first end of the upper support arm 261 can be hinged at Between the first end of the elevating arm 230 and the second end of the elevating arm 230, and the hinge point of the upper support arm 261 and the elevating arm 230 is close to the second end of the elevating arm 230, so as to save the driving force, so that low power can be used ⁇ chassis up and down drive motor 240. Specifically, taking FIG.
  • the right end of the elevating arm 230 is hinged with the top end of the articulated arm 277
  • the upper support arm 261 is located on the left side of the articulated arm 277
  • the articulated arm 277 is articulated with the elevating arm 230
  • the point is located between the left and right ends of the lift arm 230, and the hinge point is closer to the right end of the lift arm 230. Since the fulcrum is closer to the motive force, the chassis lift drive motor 240 can drive a heavier-weight object with a small torque. It can be seen from the above that by reasonably arranging the fulcrums, the chassis lifting drive motor 240 only needs to output a small force to pry large-quality objects, which can further improve the stability.
  • the second connecting arm 273, the support frame 276, the hinge arm 277, and the bottom plate 275 may be integrally formed to form an integral piece to increase strength. Moreover, whether it is the second connecting arm 273, the supporting frame 276, the articulating arm 277 and the bottom plate 275 of the integrated structure, it is all partly arranged, or partly divided, all or part of them can be accommodated in the above relative arrangement The accommodation space formed by the upper mounting plate 110 and the lower mounting plate 120.
  • the vehicle 10 further includes a running drive mechanism and a steering drive mechanism.
  • the traveling drive mechanism may include a traveling drive motor (not shown in the figure) connected to the wheel shaft for driving the axle to drive the wheels 401 to rotate, so as to realize forward, backward, or steering of the vehicle 10;
  • the steering drive mechanism may It includes a wheel angle adjusting motor 610 that is drivingly connected to the suspension mechanism 300 for selectively driving the suspension mechanism 300 to rotate to drive the wheel 401 to rotate around the direction of gravity.
  • the rotation axis of the walking drive mechanism passes through the center axis of the wheel 401, and the rotation axis of the steering drive mechanism is substantially perpendicular to the center axis of the wheel body 21, that is, the rotation axis of the steering drive mechanism is substantially perpendicular to the walking drive The axis of rotation of the mechanism.
  • one or more of the running driving motor, the wheel angle adjusting motor 610 and the chassis lifting driving motor 240 described above and the suspension lifting driving motor described below may be brushless motors in this example , Brush motor or other types of motors.
  • a mounting seat is provided on the cross beam 312, and a wheel angle adjusting motor 610 of the steering mechanism is installed on the mount, and the The output shaft of the wheel angle adjusting motor 610 is vertically penetrated in the shaft hole of the motor base to drive the beam 312 to rotate.
  • the output shaft of the wheel angle adjustment motor 610 will drive the crossbeam 312 to rotate around the direction of gravity, that is, rotate along the dotted line in FIG. 5, and then drive and pass through the two The wheel set 400 in the shaft hole of the longitudinal beam 311 rotates around the dotted line.
  • the steering mechanism may further include other transmission mechanisms, such as a gear train drivingly connected to the wheel angle adjustment motor 610.
  • the push rod 210, rocker arm 220, lifting arm 230, upper support arm 261, lower support arm 262, first connection arm 271, suspension upper arm 272, suspension lower arm 274, second connection arm described above 273 and the articulated arm 277 do not limit the specific structure, for example, it can be a rod or a plate-shaped member.
  • the first variant of the vehicle 10 provided by this embodiment generally relies on the lifting device 200 used to connect the suspension mechanism 300 and the chassis 100, and the lifting device 200 can be used to lift the chassis 100.
  • the lifting device 200 adopts a multi-link mechanism driven by a deformation driving mechanism, the multi-link mechanism can be self-locked in the entire process of movement through a reasonable design of the multi-link mechanism, thereby improving the vehicle 10 Safety during deformation.
  • FIG. 9 is a schematic diagram of a second modification of the vehicle provided by this embodiment
  • FIG. 10 is a top view of FIG. 9.
  • a method for changing the center of gravity of the vehicle 10 is provided. From the following detailed description, those skilled in the art may find that this method generally drives the suspension mechanism 300 along the center parallel to the wheels 401. The axis of rotation is achieved with respect to the wheel 401 rotating.
  • FIG. 11 is a front view of the suspension mechanism and the wheel set provided in this embodiment
  • FIGS. 12a to 12b are explosion views of FIG. 11 at different viewing angles
  • FIG. 13 is a partial explosion view when the suspension mechanism is rotated to another position.
  • the suspension mechanism 300 includes a first portion 330 and a second portion 340 that are relatively rotatable, and a locking portion for locking the first portion 330 and the second portion 340; wherein,
  • the first part 330 may be the above-mentioned mounting seat fixed on the crossbeam 312, the first part 330 is drivingly connected to the wheel angle adjustment motor 610;
  • the second part 340 is fixed to the chassis 100 or articulated with the above lifting device 200, for example ,
  • the second part 340 can be articulated with the above multi-link mechanism, and the second part 340 is also rotatably connected to the first part 330 through the rotating shaft 350, so that it can be adjusted by rotating the first part 330 around the rotating shaft 350
  • the angle between the first part 330 and the bottom surface, that is, the height of the chassis 100 relative to the ground is adjusted, as shown in FIGS. 11 and 13.
  • the first part 330 is provided with a first shaft hole 332 through which the rotating shaft 350 passes
  • the second part 340 is provided with a second shaft hole 342 through which the rotating shaft 350 passes.
  • the rotating shaft 350 sequentially passes through the second shaft hole 342 and After the first shaft hole 332, the first part 330 and the second part 340 may be connected together.
  • the first part 330 can be driven to rotate around the rotating shaft 350 to adjust the height of the chassis 100.
  • the first part 330 and the second part 340 can be locked by the locking part It is ensured that the relative positions of the first part 330 and the second part 340 do not change.
  • the locking portion may include a first ratchet surface 331 provided on the first portion 330, and a second ratchet surface 331 provided on the second portion 340 to cooperate with the first ratchet surface 331 Ratchet surface 341.
  • first ratchet surface 331 and the second ratchet surface 341 When the first ratchet surface 331 and the second ratchet surface 341 are engaged, the first portion 330 and the second portion 340 will not rotate relatively.
  • the locking of the positions of the first part 330 and the second part 340 is achieved by providing mutually matching ratchet structures on the first part 330 and the second part 340, and the length of the rotating shaft 350 should generally be equal to or slightly larger than the first shaft hole The sum of the depth of 332 and the depth of the second shaft hole 342. It can be understood that the length of the rotating shaft 350 should not exceed the sum of the depth of the first shaft hole 332, the depth of the second shaft hole 342, and the height of the ratchet teeth on the first ratchet surface 331.
  • FIGS. 14a to 14c are schematic diagrams of the state when the suspension mechanism provided by this embodiment is rotated to different positions.
  • a part of the rotating shaft 350 is drawn out to disengage the first ratchet surface 331 and the second ratchet surface 341, and then the rotating shaft 350 can be circumvented Rotate the first part 330 so that the first part 330 rotates from the first position of FIG. 14a through the second position of FIG. 14b to the third position of FIG. 14c, and then meshes the first ratchet surface 331 and the second ratchet surface 341 together Finally, push the shaft 350 inwards to lock the positions of the first part 330 and the second part 340.
  • the suspension mechanism 300 can also be changed from the third position shown in FIG. 14c to the first position shown in FIG. 14a.
  • the screw 251 is used as the rotating shaft 350.
  • the locking portion includes a first internal thread provided in the first shaft hole 332, a second internal thread provided in the second shaft hole 342, and a first internal thread and a second internal thread provided on the screw 251, respectively Cooperating first external thread and second external thread.
  • first part 330 and the second part 340 need to be locked, pass the screw 251 through the second shaft hole 342 and the first shaft hole 332 in sequence, and extend into the first shaft hole 332 by a suitable length to make the screw 251
  • the first external thread is connected with the first internal thread in the first shaft hole 332, and at the same time, the second external thread on the screw 251 and the second internal thread in the second shaft hole 342 are also threaded, so that The first part 330 and the second part 340 are fixedly connected together by a screw 251.
  • the second shaft hole 342 may not be provided with the second internal thread, and correspondingly, the screw 251 is also not provided with the second external thread.
  • the head of the screw 251 can press the second part 340 on the first part 330 , The relative position of the first part 330 and the second part 340 can also be locked.
  • the screw 251 needs to be loosened, and the operation is relatively simple and convenient.
  • the rotating shaft 350 may be arranged in a tight fit with the first shaft hole 332 and the second shaft hole 342, so that when the rotating shaft 350 passes through the second shaft hole 342 and the first shaft hole 332 in sequence, The first part 330 and the second part 340 can be fixedly connected together.
  • the head of the rotating shaft 350 has a rib extending in the radial direction, and when the rotating shaft 350 sequentially passes through the second shaft hole 342 and the first shaft hole 332, the rib can press the second portion 340 When it is tight on the first part 330, the rotating shaft 350 may not be arranged in a tight fit with the second shaft hole 342.
  • the wheel shaft of the wheel set 400 may use a hollow shaft (that is, the wheel shaft is hollow), and a mounting beam with a suspension lifting drive motor is penetrated in the hollow shaft, the mounting beam and at least one longitudinal beam 311 fixed.
  • a suspension lifting drive motor (that is, the second part of the suspension mechanism) is installed on the mounting beam, the suspension lifting drive motor is accommodated in a hollow shaft, and the output shaft of the suspension lifting drive motor is directed toward one of the longitudinal beams 311 It extends and is drivingly connected to the longitudinal beam 311.
  • the suspension hoist drive motor When the suspension hoist drive motor is started, its output shaft can drive the suspension mechanism 300 to rotate about an axis parallel to the hollow shaft, thereby adjusting the height of the suspension mechanism 300, that is, the suspension mechanism can be converted from at least high to low and Switching from the low position to the high position, the height of the chassis 100 is adjusted during the lifting of the suspension mechanism 300.
  • the longitudinal beam is used as the first part of the suspension mechanism or some structures of the first part in this example, in other examples, other alternative structures may also be used as the first part of the suspension mechanism.
  • the second part of the suspension mechanism is not limited to include only the suspension lifting drive motor, it may also include other structures, such as an auxiliary transmission structure.
  • a through hole may be formed in the longitudinal beam 311, and the diameter of the through hole near the outer portion is smaller than the diameter of the through hole near the inner portion, and the output shaft of the suspension lifting drive motor is installed through the first bearing
  • the hollow shaft is installed at the portion near the inner side of the through hole through the second bearing.
  • the locking portion between the first portion 330 and the second portion 340 may be replaced with a slip ring structure equipped with a rotating electrical connection
  • the The slip ring structure can be driven by a driving device.
  • the rotation angle between the first part 330 and the second part 340 needs to be adjusted, it can be achieved by controlling the relative rotation of the slip ring structure.
  • the slip ring structure includes a relatively rotatable inner ring and outer ring, and the inner ring and outer ring can ensure electrical contact whether in a stationary state or a rotating state. The existing technology will not be repeated here.
  • the outer ring is fixedly connected to one of the first part 330 and the second part 340, and correspondingly, the inner ring is fixedly connected to the other one of the first part 330 and the second part 340.
  • the above fixed connection It can be a direct fixed connection or an indirect fixed connection through an intermediate component.
  • auxiliary transmission structures such as a link structure and a rack and pinion structure, can be added to assist in completing the conversion of the angle between the first part 330 and the second part 340.
  • whether to provide the driving force itself may be used as a lock for the first part and the second part.
  • the above-mentioned suspension lifting drive motor itself can be used as a locking part for locking the first part and the second part.
  • the above two variants can be used alone or in combination.
  • the vehicle chassis has at least two different heights, and the center of gravity of the vehicle can be in two different positions; when the above two deformation methods are used in combination, the vehicle chassis can at least There are four heights so that the center of gravity of the vehicle can be in at least four different positions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

La présente invention concerne un mécanisme de suspension (300), conçu pour relier des ensembles de roues (400) et un châssis (100) d'un véhicule, et comprenant : une première partie (330) et une seconde partie (340). L'une de la première partie (330) et de la seconde partie (340) est reliée au châssis (100), et l'autre de la première partie (330) et de la seconde partie (340) est reliée en rotation aux essieux des ensembles de roues (400). Au moins l'une de la première partie (330) et de la seconde partie (340) peut tourner par rapport à un axe de rotation pour entraîner le châssis (100) à se déplacer vers le haut et vers le bas, l'axe de rotation étant parallèle à l'axe central des essieux. En fournissant le mécanisme de suspension pour relier le châssis et les ensembles de roues, le châssis peut être levé et abaissé par rotation relative de la première partie et de la seconde partie du mécanisme de suspension de façon à régler le centre de gravité du véhicule, de telle sorte que le véhicule puisse modifier la hauteur du châssis en fonction des besoins réels dans un mouvement à grande vitesse, un mouvement à faible vitesse, une montée de pente ou d'autres scénarios. L'invention porte également sur un dispositif de levage et d'abaissement et un véhicule.
PCT/CN2018/122842 2018-12-21 2018-12-21 Mécanisme de suspension, dispositif de levage et d'abaissement et véhicule Ceased WO2020124593A1 (fr)

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PCT/CN2018/122842 WO2020124593A1 (fr) 2018-12-21 2018-12-21 Mécanisme de suspension, dispositif de levage et d'abaissement et véhicule
CN201880072127.0A CN111315600A (zh) 2018-12-21 2018-12-21 悬挂机构、升降装置以及车辆

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PCT/CN2018/122842 WO2020124593A1 (fr) 2018-12-21 2018-12-21 Mécanisme de suspension, dispositif de levage et d'abaissement et véhicule

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CN113119674A (zh) * 2021-05-27 2021-07-16 湖南星邦智能装备股份有限公司 一种可升降底盘和高空作业车
CN115503828B (zh) * 2022-11-16 2023-03-17 福建省威盛机械发展有限公司 车辆底盘及车辆
CN116141897A (zh) * 2023-04-10 2023-05-23 北京航天发射技术研究所 一种可升降可横摆的车辆轮腿机构

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