JPH08665B2 - Special vehicle cab moving device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver's cab moving device for a special vehicle, and more particularly to a driver's cab moving device for a special vehicle such as a crane vehicle having a telescopic boom.

(Prior Art) As a cab moving device of a conventional special vehicle, for example,
In a hydraulically driven mobile crane equipped with a crane cab on the side of the base of a telescopic boom whose base is pivotally mounted on the swivel of the vehicle, the swivel was provided so that it could move along a plane parallel to the up and down surface of the boom. There is a crane cab which can be moved from the cab by a hydraulic hoist (see Japanese Utility Model Publication No. 50-26143).

Further, in a special vehicle having a front overhang boom protruding forward from the operator's cab of a mobile crane, a driver's cab is provided on a swivel so as to be movable along the front overhang boom, and a driving means for the operator's cab is provided. Some are also known (see No. 59-105258).

Furthermore, in a self-propelled mobile crane equipped with a boom having a base that can be raised and lowered on an upper swivel mounted on the vehicle so that it can turn, guide means are provided on the vehicle and the upper swivel,
There is also proposed a structure in which the driver's cab is engaged with the guide means so that the driver's cab can be moved between the vehicle body and the upper turntable (see Japanese Utility Model Laid-Open No. 61-72582).

(Problems to be Solved by the Invention) However, in the one described in Japanese Utility Model Publication No. 50-26143, the crane loading and operability is improved by moving the crane cab before and after the swivel base. However, since the vehicle driving cab and the cargo handling operation cab are provided separately, the same operator performs both operations unless the driver moves from one cab to the other. There is a problem that you cannot do it.

Further, in the one described in Japanese Utility Model Laid-Open No. 59-105258,
By moving the operator's cab to the side of the overhang boom on the swivel and forward and backward of the vehicle body along a plane parallel to the raising and lowering surface of the boom, it is possible to temporarily reduce the range in which the traveling visibility of the crane vehicle is restricted. However, since the driver's cab is moved along a rail extending from the swivel base, there is a problem that the stability of the driver's cab is not sufficiently secured.

Further, in the one disclosed in Japanese Utility Model Laid-Open No. 61-72582, a guide means inclined from the upper turntable toward the front end of the vehicle body is provided on the vehicle body and the upper turntable, and the driver's cab is provided in the guide means. Since the driver's cab was configured to be movable between the vehicle body and the upper swivel base by engaging it, the operator's cab is limited to the one that can move the front end of the driver's cab to the position matching the front end of the vehicle body. Even in the running posture where the cabin has moved to the front of the vehicle body, there is still a problem that a part of the field of view (upper part) of the cab is still limited by the telescopic boom.

In addition, regardless of whether the driver's cab moves between the swivel base and the vehicle body, the operation command transmission for operating the traveling of the crane vehicle is transmitted from the moving driver's cab by pneumatic pressure, hydraulic pressure, etc. by the hose. Either using the fluid pressure of the above, or using an electric signal or the like via a cable, etc., which may cause an operation delay or a slip in the operating part due to their circuit configuration. However, there is a problem that the transmission of the operation command, especially the transmission of the steering operation command at the time of high speed traveling, cannot necessarily obtain high reliability.

In view of such a conventional example, the present invention provides a driver's cab equipped with various types of operating mechanisms such as traveling, cargo handling, excavation, and the like of a special vehicle, over the swivel base on the vehicle body and the edge of the vehicle body, and turning the same. The steering rod that can be attached to the end surface of the vehicle body lower than the driver's cab mounting surface, and that has the steering rod end provided with connectors such as hoses and cables in the operator's cab and a mechanical coupling is guided to the vehicle end surface. By enabling mechanical connection directly to the end of the rod, mechanical steering operation is possible, and furthermore, the hydraulic device provided at the end of the vehicle moves up and down through the support column outside the end surface of the vehicle. By providing the cab for the driver's cab, the driver's cab moving device for a special vehicle that does not have the above problems is provided.

(Means for Solving Problems) In order to solve the problems of the conventional example as described above, the present invention has a base of a boom pivotally attached to a swivel base on a vehicle body, and the base of the boom is laterally attached to the base. In a driver's cab moving device for a special vehicle, which is reciprocally driven by an appropriate means in a direction parallel to the raising and lowering surface and provided with a driver's cab which also serves as a traveling operator's room, As you cross the edge,
The swivel base can be mounted on the end surface of the vehicle body lower than the operator's cab mounting surface and lower than the boom bottom surface, and the driver's cab, such as hoses and cables for traveling and cargo handling operations, and a mechanical cup. A steering rod end with a ring is provided, a connector that engages with a connector of the driver's cab is provided on the swivel base, and a connector of the driver's cab and a mechanical coupling are provided at an end of the vehicle body. An end portion of a steering rod coupled to the vehicle body is provided, and a receiving frame of the operator cab, which is lifted up and down via a column by a hydraulic device provided at an end portion of the vehicle body, is provided outside the end surface of the vehicle body. It is a thing.

(Operation) Since the present invention has the above-mentioned structure, the driver's cab capable of various operations such as traveling operation and cargo handling of the vehicle, especially the floor surface thereof, is located outside the end surface of the vehicle body when the special vehicle is traveling. so,
By attaching it to the lower part that is sufficiently distant from the upper surface of the vehicle body,
The cab has a low floor shape and the length of the boom extending forward from the cab in the traveling position is shortened, whereby the traveling field of view, especially the traveling field limited by the derrick cylinder of the boom is reduced. In addition to eliminating it, the driving field of view that is restricted by the boom is narrowed to enable safe traveling operations, and the driver's cab is moved to a swivel base during operations such as cargo handling so that high-voltage suspended loads can be viewed directly. Enables safe operations such as cargo handling, and these operations are performed by the same operator in the same cab.
Traveling operation is performed from a driver's cab in a running posture via a mechanical coupling mechanism at an end of a steering rod, and is provided outside of an end surface of the vehicle body and provided at an end portion of the vehicle body. With the hydraulic system, the operating frame is moved up and down by the receiving frame that is moved up and down via the support columns.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention, in which 1 is a crane vehicle as a special vehicle, 2 is a vehicle body of the crane vehicle 1, 3 is an outrigger, 4 is a tire, 5 Is a slewing bearing which is provided on the vehicle body 2 and supports the swivel base 6, 7 is a frame which is mounted on the swivel base 6, and which houses a drive mechanism of the wire rope 9 for cargo handling operation by the telescopic boom 8, and 10 is an telescopic boom 8 is a pivot to the frame 7, 11 is a derrick cylinder of the telescopic boom 8, 12 is a bracket for attaching the piston rod of the derrick cylinder 11 to the telescopic boom 8, 13 is a lower part of which the shaft 14 is mounted on the swivel base 6
L-shaped column, 15 is a tilt cylinder for tilting the L-shaped column 13, 16 to 18 are first to third telescopic arms extensible on the horizontal portion 13A of the L-shaped column 13, and 19 and 19 are operator's cab 20 It is a bracket with holes provided before and after. This cab 20 is equipped with various operating devices such as traveling of the crane vehicle 1, swiveling of the swivel base 6, loading and unloading of the telescopic boom 8 and loading and unloading of the clay car 1 due to the outrigger 3 appearing and retracting. .

21 is a bracket provided on the swivel base 6, 22 is the bracket
Fixing pins for engaging the holes of 21 with holes (not shown) provided on both sides of the lower part of the cab 20, a bracket provided at the rear center of the cab 20, 24 a fixing pin, and 25 a front end of the vehicle body 2. The receiving plate provided at the lower part of the surface, 26 is a side plate of the receiving plate 25, 27 is a fixing pin, 28
Is a connector provided at the center of the swivel base 6.
A hose, a cable, etc. for transmitting various operation commands such as traveling, cargo handling, appearance / removal of the outrigger 3, and forward / backward movement of the cab 20 to respective destinations are connected to the.

The connector 28 may be provided at any position on the swivel base 6, but the connector 28 may be provided on the swivel base 6 in the cab.
If it is provided around the facing part of 20, the connector 28 and the cab 20
The connection and disconnection with the internal connector 30 can be operated from within the cab 20.

Reference numeral 29 denotes a connector similar to the connector 28 provided at the front end portion of the vehicle body 2 (however, a steering rod structure having a mechanical coupling structure is provided at the front end portion of the vehicle body 2 and a steering rod structure engaging with the steering rod structure is provided in the cab 20). When provided ...
This connector is shown in Fig. 5 and its description below.
29 does not require a steering circuit), 30 is a connector provided in the cab 20, and the connector 30 is
It is provided at the tip of a hose, cable, etc. that has a sufficient length for transmitting commands from various operating mechanisms such as the steering handle, cargo handling lever, etc., and the connector 30 alternates with the connector 28 or 29. Connected to.

 Next, the operation of this embodiment will be described.

In order to move the cab 20 in the solid line position in FIG. 1 to the chain line position 20B in the traveling posture of the crane vehicle 1, first, the swivel base 6 is rotated by a hydraulic motor (not shown) to raise the telescopic boom 8. Align the falling surface with the front-back direction of the vehicle body 2. Then, by appropriate means, the first to third telescopic arms 16, 17 and 18 which are supported so as to be able to extend and contract are extended to the horizontal portion 13A of the L-shaped support column 13, and the cab suspended by the third telescopic arm 18 20 for the car body 2
It is assumed to be the upper chain line position 20A in front of. Here, the socket 30 is pulled out from the socket 28 and inserted into the socket 29.

Thereafter, pressure oil is supplied to the lower side of the tilt cylinder 15 to tilt the L-shaped support column 13 forward, and the first to third telescopic arms 16,
17 and 18 are chain line positions (16B) 17B and 18B, and the operator's cab of the chain line position 20B suspended from the third telescopic arm of the chain line position 18B is placed on the receiving plate 25 of the front end face of the vehicle body 2, Fixing pins 27 are provided on the lower sides of both sides and holes of the side plate 26, and a bracket 23 at the rear center of the cab 20 is fixed on the upper surface of the front end of the vehicle body 2.
At 24, fix each and set the running posture to 20B.

The socket 30 may be inserted and removed before the movement of the cab 20 is started.

Further, as a moving means of the operator's cab 20, the first to third telescopic cylinders 16, 17, and 18 of FIG. 1 are reciprocally driven by, for example, a hydraulic cylinder and a piston rod, and a wire wire rope of the telescopic boom 8. The hook 31 at the 9th end may be moved by engaging the wire bracket 9 or the telescopic boom 8 with the telescopic boom 8 after engaging with the holed bracket 19 or 19A on the front side or the rear side of the cab 20, The reciprocating motions of the outrigger 3, the hydraulic actuator (not shown), and the like may be used via the wire rope.

Although not shown, a switch for detecting the backward position of the driver's cab 20, which is switched to ON or OFF by moving the driver's cab 20 to the solid line position on the swivel 6 of FIG. If it is provided on the upper side, the swivel base 6 is detected only when the backward movement of the cab 20 is detected by the detection switch, that is, when the swivel base 6 supporting the telescopic boom 8 is in a position where the swivel base 6 can swivel on the vehicle body 2. The drive circuit of the swing motor (not shown) can be operated, and the cargo handling operation including the swing of the telescopic boom 8 on the swing base 6 can be enabled.

In addition, the first to third telescopic arms 16 and 1 of this embodiment
Although not shown as the rocking support structure of 7, 18, the structure in which the horizontal portion 13A of the L-shaped column 13 of FIG. 1 is directly attached to the upper portion of the swivel base 6 and tilted by a tilt cylinder (not shown). May be

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. The same parts as those of the first embodiment shown in FIGS. 1 to 3 are designated by the same names and reference numerals to avoid duplication of description.

In FIGS. 4 and 5, 32 is an end portion of the vehicle body 2 (fourth
Steering rod provided on the right side in the figure, 33 is an end spline shaft, 34 is a steering handle, 35 is a steering rod connected to the steering handle 34 via a bevel gear, and 36 is a spline at the end of the rod 35. Shaft 37 is a shifter that always meshes with the spline shaft 36,
When the driver's cab 20 is fixed to the chain line position 20B on the end face of the vehicle body 2, the shifter 37 moves the lever 38 from the chain line position 38A to the solid line position 38 in FIG.
When the steering rods 32, 35 are mechanically coupled to each other, the spline shaft 36 and the spline shaft 33 are coupled to each other through the shifter 37.

 Next, the operation of this embodiment will be described.

In order to bring the cab 20 into the running posture, first, the fixing pins 22 and 24 are pulled out from the cab 20 in the solid line position in FIG. 4 to release the fixed state with the swivel base 6, and the connector 30 is attached. 28
After pulling it out from the connector, it is inserted into the connector 29 at the end of the vehicle body 2 and, at the same time, the lever of the chain line position 38A is rotated to the solid line position 38, and the shifter 37
Is moved to directly connect the spline shafts 36 and 33 to enable steering operation during traveling.

In this embodiment, the shifter 37 uses the lever 38 to move the vehicle body 2
Since it directly meshes with the spline shaft 33 of the steering rod 32 that is led to the end face of the steering wheel, the steering handle 34 is operated in the same manner as the steering handle structure of a normal high-speed vehicle equipped with a mechanical connection structure, that is,
Different from the operation of the both by pneumatic pressure, hydraulic pressure, electric circuit, etc., more reliable operation can be performed.

The remaining structure and operation are substantially the same as in the first embodiment.

If a mechanical coupling structure for the steering rods 32 and 35 is provided in the cab 20 and the front end of the vehicle body 2 as in this embodiment, the mobile crane 1 can operate at a predetermined speed (road traffic law). Then, it will be equipped with the mechanical connection structure of the steering rod, which is required for a vehicle traveling at a high speed of 50 km / hour or more.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6 to 10. The same parts as those of the first and second embodiments shown in FIGS. 1 to 5 are designated by the same names and reference numerals to avoid duplication of description.

6 to 10, 42 and 42 are telescopic booms 8.
L-shaped rails provided above and below the side of the (left side in FIG. 8), 43
Is a sliding plate slidably provided between the L-shaped rails 42, 42,
The sliding plate 43 reciprocates by a screw shaft 44 driven by a motor 45. Reference numeral 46 is an L-shaped suspension plate attached to the sliding plate 43 with bolts 47, and the top of the cab 20 is attached to the lower portion of the L-shaped suspension plate 47. 48 is a hanging piece provided on the top of the operator's cab 20, 49 is a suspension shaft, 50 is a roller provided on the upper left side (right side in FIG. 8) of the operator's cab 20, the roller 50 being on the side of the telescopic boom 8. Abut the cab
Maintains 20 vertical suspensions.

Reference numeral 52 denotes an inverted L-shaped support column provided on the upper part of the telescopic boom 8. The inverted L-shaped support column 52 is located slightly forward of the front end surface of the vehicle body 2 when the telescopic boom 8 is in the collapsed state (FIG. 6). The boom 8 is provided so as to project laterally (left side in FIG. 8). In addition, this inverted L-shaped column 52 has a sieve roller 5
3 and 54 are provided, and the cab 20 is suspended by engaging the hook 51 at the end of the wire rope 9 suspended through the sheave rollers 53 and 54 with the suspension shaft 49 at the top of the cab 20. To be done.

 Next, the operation of this embodiment will be described.

To move the cab 20 in the solid line position (FIG. 6) on the swivel base 6 to the chain line position 20A at the front end of the vehicle body 2, first set the telescopic boom 8 to the solid line position 8 in the front-rear direction of the vehicle body 2. , Cab
20 The L-shaped hanging piece 46 on the upper part is fixed to the sliding plate 43 by the screw 47 and hung, and then fixed to the hole of the bracket 21 on the swivel base 6 that engages with the holes (not shown) on both lower sides of the cab 20. The pin 22 and the fixing pin 24 of the bracket 23 at the rear center of the cab 20 are pulled out to release the fixed state between the cab 20 and the swivel base 6.

After that, the screw shaft 44 is rotated by the motor 45 to set the sliding plate 43 along the L-shaped rails 42, 42 so that the cab 20 is at the chain line position 20A above the front end of the vehicle body 2. At this time, the roller 50 on the upper side of the operator's cab 20 contacts the lower part of the side surface of the telescopic boom 8, so that the vertical posture of the operator's cab 20 is maintained.

Next, the socket 30 is pulled out from the socket 28, and the vehicle body 2
Insert it into the socket 29 at the front end. Then, the end of the wire rope 9 is lowered onto the cab 20A via the sheave rollers 53 and 54, and the hook 51 at the end is engaged with the suspension shaft 49 to suspend it, and then the bolt 47 is loosened. The operator's cab 20 is released from the sliding plate 43. Then, loosen the wire rope 9 and cab 20
Is mounted on the receiving plate 25 as a chain line position 20B below the end of the vehicle body 2, and the upper ends of the vehicle body 2 and the side plates of the receiving plate 25 are fixed by the fixing pins 24 and 27.
Fixed to 26 and. Further, the shifter 37 is engaged with the spline shaft 32 led out to the end of the vehicle body 2 by the lever 38, and both steering rods are coupled to perform steering operation.

In addition, in order to return the driver's cab 20B in the traveling posture to the cargo handling posture 20, an operation reverse to the above may be performed.
The other operations are substantially the same as those in the first and second embodiments.

In addition, as a structure for reciprocally driving the cab 20 in the front-back direction of the vehicle body 2, a screw shaft 44 and a motor 45 of this embodiment are replaced by a suspension shaft 49 at the top of the cab 20 suspended by a sliding plate 43. , The wire rope 9 end hook 51 may be engaged to reciprocate, and in this case, the rails 42, 42
The I-beam consists of one I-beam
The hanging piece 48 at the top may be bent and hung.

Next, a fourth embodiment of the present invention will be described with reference to FIG. The same parts as those of the third embodiment shown in FIGS. 6 to 10 are designated by the same names and reference numerals to avoid duplication of description.

In this embodiment, the cab 20 is provided with rails on the side of the telescopic boom 8.
42, 42, a point for suspending and moving via a sliding plate 43, and a driver's cab at a chain line position 20B below the end face of the vehicle body 2 are placed on a receiving plate 25 below the end portion of the vehicle body 2 and its side plate 26 The third embodiment is similar to the third embodiment in that it is fixed to the upper surface of the front end of the vehicle body 2 with the fixing pins 27 and 24, but in this embodiment, the chain line position 20 of the cab 20
When descending from A to 20B, move the telescopic boom 8 in the solid line (Fig. 11).
Therefore, it is performed by inclining downward to the chain line position 8A in the figure,
It is not necessary to provide an independent lifting mechanism for the cab 20 as in the third embodiment.

After fixing the cab 20 at the chain line position 20B in FIG. 11 to the side plate 26 and the upper surface of the front end of the vehicle body 2 with the fixing pins 27 and 24,
The bolt 47 is removed, the telescopic boom 8 is raised to a horizontal position and fixed, and the entire crane vehicle 1 is placed in the running posture position.

Further, in order to return the driver's cab 20B in the traveling posture to the cargo handling posture 20, the reverse operation to the above may be performed.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. 12 to 21. The same parts as those of the first embodiment shown in FIGS. 1 to 3 are designated by the same names and reference numerals to avoid duplication of description.

In FIGS. 12 to 21, reference numeral 57 denotes a rail provided on the upper surface of the vehicle body 2, and the rail 57 is provided continuously from the side portion of the turntable 6 (the lower portion in FIG. 13) to the front end of the vehicle body 2. Also,
This rail 57 is parallel to the erecting surface of the telescopic boom 8 and
It is provided apart from the lower surface so as not to interfere with the turning of the turning base 6. .. are two pairs of hydraulic cylinders provided at the lower part of the cab 20 and above the lower surface (inside the cab 20). Pressure oil is introduced to the upper side of the hydraulic cylinder 58. By lowering the piston rod 59,
The wheels 60 at the lower end are placed on the rails 57, and the cab 20
Is supported on the rail 57.

62 is a hydraulic cylinder of the outrigger 3 provided on the right side of the front end of the vehicle body 2 (Fig. 13), 63 is its piston rod, 64 is a flange at the lower end of the piston rod 63, and 65 is a column located outside the front end surface of the vehicle body 2. The strut 65 is provided with rings 66 and 67 on the inside (left side in FIG. 17) of the upper and lower parts and a receiving plate 68 on the upper part of the outside thereof, and the lower ring 66 is the flange 64 at the lower end of the piston rod 63. The ring 67, which is placed on the upper side, is slidably and rotatably provided outside the hydraulic cylinder 62. 69 is a hole, 70 is a receiving frame of the cab 30, and the receiving frame 70
Above the rails, rails 71, 71 parallel to the rails 57, 57 are provided.
And side plates 72, 72, and locking plates 73 and 71 on the lower side thereof.
Are provided respectively. 75 is a pedestal provided at the lower end surface of the vehicle body 2, and 76, 77, 78 are fixing pins.

Reference numeral 80 is a cross beam that supports the outriggers 3 arranged at the bottom of the vehicle body 2.

 Next, the operation of this embodiment will be described.

First, the swivel base 6 is swung by a hydraulic motor (not shown) to set the telescopic boom 8 in the front-back direction of the vehicle body 2, and the wheels 60 at the lower end of the cylinder 58 below the operator cab 20 are directly above the rail 57. Next, pressure oil is supplied to the upper side of the cylinder 58 to mount the wheel 60 on the rail 57, and the cab 20 is set to the wheel 60 and the piston rod.
It is supported on the rail 57 via 59.

After that, a fixing pin 22 between holes (not shown) on the lower sides of the operator's cab 20 and a hole portion of the bracket 21 on the swivel base 6, and a fixing pin 24 between the bracket 23 at the rear center and the upper surface of the front end of the vehicle body.
Is pulled out, and the fixation between the cab 20 and the swivel base 6 is released. At this time, the receiving frame 70 coincides with the front upper surface of the vehicle body 2, and the rails 71, 71 on the receiving frame 70 are positioned on the same straight line as the rails 57, 57.

Then, for example, the hook 31 at the end of the wire rope 9
By engaging the bracket 19 with a hole in the front part of the cab 20 and winding the wire rope 9 or extending the telescopic boom 8, the cab 20 is moved along the rails 57 and 71, and It is placed on the rails 71, 71 of the receiving frame 70 beyond the end face, and the chain line position is 20A. Then, by supplying pressure oil to the lower side of the cylinder 58, the wheel 60 can be retracted from the chain line position 60A in FIG. 14 to the solid line position 60 in FIG. 14 (actually, the wheel 60 is immovable, Descends from the chain line position 20A in FIG. 12 to the chain line position 20C, and the rails 71, 71 and the receiving frame are
Mounted directly on 70. In this state, the fixing pin 76 is inserted into a hole (not shown) in the lower portion of the operator's cab 20 and a hole in the side plate 72 of the receiving frame 70 to fix them.

Next, pressure oil is supplied to the upper side of the cylinder 62 of the outrigger 3, and the piston rod 63 is lowered to move the position of the chain line 63A in FIG.
At the same time, the flange 64 at the bottom of the piston rod 63
Then, the supporting pillar 65 of the lower ring 66 is lowered to the chain line position 65A, and the receiving frame 70 supported by the receiving plate 68 at the top of the supporting pillar 65 is lowered to the chain line position 70A (Fig. 17). The lower surface of the receiving frame 70 is directly placed on the receiving table 75 protruding outward from the lower end surface of the vehicle body 2. In this state, the receiving frame 70
The locking plate 74 is fixed to the pedestal 75 by fixing pins 78, and at the same time, the flange 23 at the rear of the cab 20 is fixed to the upper surface of the end of the vehicle body 2 by fixing pins 24.

As a result, the driver's cab 20, in particular, the floor of the driver's cab 20, outside the end face of the vehicle body 2, is sufficiently lower than the upper face of the chain line 20B (the 12th position).
The driver's cab 20 is in the running posture 20B.

The receiving frame 70 does not descend below the chain line position 70A.

Next, the locking plate 73 below the receiving frame 70 and the receiving plate 68 above the support 65
Pull out the fixing pin 77 of and to release the fixation of both. After that, pressure oil is sent to the upper side of the cylinder 62 and the piston rod
63 is further lowered from the chain line position 63A in FIG.
At the same time, the pillar 65 is changed from the chain line position 65A to 65B position, the top receiving plate 68 is changed from the chain line position 68A to 68B position, and the receiving frame 70
Since the engagement between the lower locking plate 73 and the lower locking plate 73 is released, the receiving frame 70 is provided on the outside of the end surface of the vehicle body 2 and is a receiving base 75.
In spite of being fixed by the fixing pin 78, the column 65 can be rotated.

In this state, the pillar 65 located on the chain line position 65B further outside the end surface of the vehicle body 2 is moved rearward from the front (outer) side of the front end surface of the vehicle body 2 about the cylinder 62 and the piston rod 63 by the upper and lower rings 66B and 67B. It is turned to the (inside) side, and at the same time, the support plate 68 on the upper part of the support column 65 is changed from the dotted line position 68B (FIG. 16) outside the end face of the vehicle body 2 to the chain line position 68C on the (inside) side.

On the right side of the front part of the vehicle body 2 (Fig. 13), the receiving plate 68 is provided.
Since the gap 2C for accommodating the column 65 is provided, the receiving plate 68 retracted to the chain line position 68C can freely move up and down. That is, pressure oil is sent to the lower side of the cylinder 62 to raise the piston rod of the chain line position 63B, and the flange 64 at the lower end thereof causes the receiving plate 68C to move to the vehicle body 2 through the lower ring 66 and the pillar 65. Near the top surface of the end (chain line position 64B in Fig. 17)
The flange of can be raised up to the solid line position 64) in the figure, and the flange 64, the pillar 65, the lower ring 66, the receiving plate 68, etc.
Since the vehicle body 2 retreats inward from the outer side of the end surface and rises, these portions do not hinder the traveling of the mobile crane 1.

In this embodiment, the wheels 60 are projected and retracted from the lower part of the cab 20 to move the cab 20 on the rails 57 on the vehicle body 2 so that the cab 20 is moved.
A sufficient space can be provided between the lower part of 20 and the upper surface of the vehicle body 2, and the degree of freedom in design of the part is improved. Moreover, since the upper surface of the swivel base 6 can be configured to be sufficiently higher than the upper surface of the vehicle body 2, the cargo handling operability by the operator cab 20 mounted on the swivel base 6 can be further improved.

(Effects of the Invention) Since the present invention has the structure as described above and operates, the following effects can be obtained.

(1) Since the driver's cab, which also serves as the traveling operation room, can be moved and mounted on the outer side of the end surface of the vehicle body when the special vehicle is traveling, and on the swivel table when the cargo handling operation is carried out, it can be used for traveling or cargo handling of the special vehicle. Also, the operation can be performed by the same person from the same driver's cab that is installed at the optimum position for each operation, and since two driver's cabs are not required, there is a space advantage.

(2) Since the driver's cab can be attached and fixed to an end surface that is sufficiently lower than the upper surface of the end of the vehicle body, the driving view when the special vehicle is running, especially the side running view around the derrick cylinder or boom is limited. In addition, there is no possibility that the driver's cab, especially the top of the driver's cab, will come into contact with the roadside tree when the special vehicle is running.

(3) Since the driver's cab can be attached and fixed below the boom on the end surface of the vehicle body, even if the boom vibrates due to vibration of the vehicle body during traveling of the special vehicle, there is no risk of contact with the operator's cab in the running posture. Therefore, the width of the cab can be wide so as to be close to the side wall of the boom, and the cab with good habitability can be installed.

(4) Because the cab can be attached and fixed to the end surface of the vehicle body,
The length from the cab to the tip of the boom that extends forward is
Since the length is remarkably shorter than that of the existing device, the degree of freedom in designing the overhang boom of various special vehicles and the surroundings of their mounting portions, etc., in which the protruding length from the cab in the running posture to the front is limited.

(5) Since the traveling field of view of the special vehicle is significantly narrowed, it becomes easy to early check other vehicles and other obstacles that cross the special vehicle at intersections and the like.

(6) During the cargo handling operation, the driver's cab can be removed from the end face of the vehicle body and moved and fixed on the swivel base, which improves the visibility during the cargo handling operation by the boom and facilitates direct visual confirmation of the working state of the cargo handling. The various operations can be performed without difficulty, and the driver's cab does not hinder operations such as cargo handling.

(7) A connector such as a hose for operating traveling and cargo handling, a cable, and the like and a steering rod end with a mechanical coupling are arranged in the cab, and the connector of the cab is engaged on the swivel base. Since the connector for the special vehicle is provided, and the connector for the driver's cab, the connector coupled to the mechanical coupling, and the end of the steering rod are provided at the end of the vehicle body, various operations of the special vehicle can be performed at appropriate positions for each operation. Not only can it be done in the driver's cab provided, but also the traveling of special vehicles, especially its steering operation, can be performed from the driver's cab mounted below the end face of the vehicle body with accurate, quick response and high transmission efficiency. .

(8) Since the receiving frame of the driver's cab, which is lifted and lowered through the pillar by the hydraulic device provided at the end of the vehicle body of the special vehicle, is provided outside the end face of the special vehicle. This can be done by the existing hydraulic system installed in the department.

A telescopic arm is swingably provided on the swivel base in a direction parallel to the raising and lowering surface of the boom, and a driver's cab is hung on the telescopic arm, and the operator's cab is hung by an appropriate means. By driving in the front-back direction, it is possible to simply configure the mechanism for raising and lowering the cab and the front-back movement mechanism.

Further, by providing a suspension rail for the cab in the lengthwise direction on the side portion of the boom so that the cab can be moved back and forth, a suspension drive structure for the cab independent on the swivel base can be provided. The suspension movement can be performed without providing.

If a suspension rail for the cab is provided in the lengthwise direction of the boom side and the boom can be tilted down to the vicinity of the upper surface of the end of the vehicle body, the cab can be moved back and forth and moved up and down. Can be done only with the boom.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment of a driver's cab moving device for a special vehicle according to the present invention, FIG. 2 is a plan view of a main portion thereof, and FIG.
FIG. 4 is an enlarged explanatory view of the connector portion, FIG. 4 is a side view of a second embodiment of the present invention, FIG. 5 is an explanatory view of a connecting portion structure of the steering rod, and FIG. 6 is a third embodiment of the present invention. FIG. 7 is a side view of an example, FIG. 7 is a plan view of an essential part thereof, FIG. 8 is a sectional view taken along the line AA in FIG. 6, and FIG. 9 is a side view of an essential part of the feed mechanism of the same embodiment. The figure shows the side view of the sieve roller,
FIG. 11 is a side view of the fourth embodiment of the present invention, FIG. 12 is a side view of the fifth embodiment of the present invention, and FIG. 13 is a plan view of the essential parts thereof.
14 and 15 are a side view and a front view of a wheel portion installed in the lower part of the cab, FIG. 16 is a plan view of a receiving frame portion thereof, FIG. 17 is a side view thereof, and FIG. 18 is thereof. A front view of the front part of the vehicle body on the cab side, FIG. 19 is a sectional view taken along the line BB of FIG. 18,
FIG. 20 is a side view of the lower part of the outrigger, and FIG. 21 is a sectional view taken along the line CC of FIG. 1 ... Crane truck, 2 ... Car body, 6 ... Revolving base, 8 ... Telescopic boom, 10 ... Axis, 13 ... L-shaped column, 14 ... Axis, 15 ... Tilt cylinder, 16, 17, 18 …… Telescopic arm, 20 …… Operator's cab, 22, 24, 27 …… Fixing pin, 28, 29, 30 …… Connector, 32, 35 …… Steering rod, 33, 36 …… Spline shaft, 37 …… Shifter, 38 …… Lever, 42 …… L-shaped rail, 43 …… Sliding piece, 44 …… Screw shaft, 45 …… Motor, 46 …… L-shaped suspension, 47 …… Bolt, 48 …… Suspension piece , 51 …… hook, 52 …… inverted L-shaped column, 53, 54 …… sieve roller, 57, 71 …… rail, 58, 62 …… cylinder, 59, 63 …… piston rod, 60 …… wheel, 64… … Flange, 65 …… Post, 66 …… Ring, 68 …… Receiving plate, 70 …… Receiving frame, 73,74 …… Locking plate, 75 …… Receiving plate, 76,77,78 …… Fixing pin.

Claims (6)

[Claims] 1. A base of a boom is pivotally mounted on a swivel on a vehicle body,
In a driver's cab moving device for a special vehicle, which is provided with a driver's cab which is reciprocally driven by an appropriate means in a direction parallel to the raising and lowering side of the base of the boom, and which is also a traveling operator's cab, Of a special vehicle, which can be attached to an end surface of the vehicle body that is above the swivel base and the edge of the vehicle body, lower than the operation room placement surface of the swivel base, and lower than the boom lower surface. Room moving device. 2. A cab moving device for a special vehicle according to claim 1, wherein rails for suspending the cab are provided on a side portion of the boom in a longitudinal direction thereof. 3. An extensible arm is swingably supported on the swivel in a direction parallel to the raising and lowering surface of the boom, and an cab is suspended from the extensible arm, and the cab is hung. The cab moving device for a special vehicle according to claim 1, characterized in that the vehicle is driven in the front-rear direction of the vehicle body by appropriate means. 4. The rail for hanging the cab in the side portion of the boom is provided, and the boom can be tilted down to near a top surface of an end portion of a vehicle body. Driver's cab moving device for the special vehicle described. 5. A boom base is pivotally mounted on a swivel on a vehicle body,
In a driver's cab moving device of a special vehicle, which is reciprocally driven by an appropriate means in a direction parallel to the raising and lowering side of the base of the boom, and provided with a driver's cab that also serves as a traveling operation room, traveling and cargo handling in the operator's cab A connector for an operation hose, a cable, etc., and a steering rod end with a mechanical coupling are arranged, and a connector for engaging the connector in the operator's cab is provided on the swivel base, and the connector for the vehicle body is provided. A driver's cab moving device for a special vehicle, characterized in that a steering rod end connected to a connector and a mechanical coupling of the driver's cab is disposed at an end. 6. A boom base is pivotally attached to a swivel on a vehicle body,
In a driver's cab moving device of a special vehicle, which is reciprocally driven by an appropriate means in a direction parallel to the raising and lowering side of the base of the boom, and which is provided with a driver's cab that also serves as a traveling operation room, a position outside the end surface of the vehicle body A driver's cab moving device for a special vehicle, characterized in that a receiving frame for the driver's cab which is raised and lowered via a column is provided by a hydraulic device provided at the end of the vehicle body.