WO2019043361A1 - Système de suspension - Google Patents

Système de suspension Download PDF

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Publication number
WO2019043361A1
WO2019043361A1 PCT/GB2018/052397 GB2018052397W WO2019043361A1 WO 2019043361 A1 WO2019043361 A1 WO 2019043361A1 GB 2018052397 W GB2018052397 W GB 2018052397W WO 2019043361 A1 WO2019043361 A1 WO 2019043361A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
running gear
bias
pivot point
casing
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/GB2018/052397
Other languages
English (en)
Inventor
Lauren Heidi POOLE
Marcus Jason POTTER
David Edward Byrne
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.)
BAE Systems PLC
Original Assignee
BAE Systems PLC
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
Priority claimed from GB1714154.0A external-priority patent/GB2566087A/en
Priority claimed from EP17275138.0A external-priority patent/EP3450225A1/fr
Application filed by BAE Systems PLC filed Critical BAE Systems PLC
Publication of WO2019043361A1 publication Critical patent/WO2019043361A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/02—Resilient suspensions for a single wheel with a single pivoted arm
    • B60G3/12—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially parallel to the longitudinal axis of the vehicle
    • B60G3/14—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially parallel to the longitudinal axis of the vehicle the arm being rigid
    • B60G3/145—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially parallel to the longitudinal axis of the vehicle the arm being rigid the arm forming the axle housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/14—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only
    • B60G11/16—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/22—Resilient suspensions characterised by arrangement, location or kind of springs having rubber springs only
    • B60G11/225—Neidhart type rubber springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G5/00—Resilient suspensions for a set of tandem wheels or axles having interrelated movements
    • B60G5/01—Resilient suspensions for a set of tandem wheels or axles having interrelated movements the set being characterised by having more than two successive axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G5/00—Resilient suspensions for a set of tandem wheels or axles having interrelated movements
    • B60G5/04—Resilient suspensions for a set of tandem wheels or axles having interrelated movements with two or more pivoted arms, the movements of which are resiliently interrelated, e.g. the arms being rigid
    • B60G5/06—Resilient suspensions for a set of tandem wheels or axles having interrelated movements with two or more pivoted arms, the movements of which are resiliently interrelated, e.g. the arms being rigid the arms turning on a common pivot, e.g. being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/13—Independent suspensions with longitudinal arms only
    • B60G2200/132—Independent suspensions with longitudinal arms only with a single trailing arm
    • 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
    • B60G2202/10—Type of spring
    • B60G2202/12—Wound spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • B60G2204/1244—Mounting of coil springs on a suspension arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/42—Joints with cam surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/011—Modular constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/32—Track vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/50—Electric vehicles; Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/104—Suspension devices for wheels, rollers, bogies or frames
    • B62D55/108—Suspension devices for wheels, rollers, bogies or frames with mechanical springs, e.g. torsion bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/52—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded in combined stresses
    • F16F1/54—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded in combined stresses loaded in compression and shear
    • F16F1/545—Neidhart-type rubber springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/026—Springs wound- or coil-like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H7/00—Armoured or armed vehicles
    • F41H7/005—Unmanned ground vehicles, i.e. robotic, remote controlled or autonomous, mobile platforms carrying equipment for performing a military or police role, e.g. weapon systems or reconnaissance sensors

Definitions

  • the invention relates to a bias system for a suspension system for a running gear system, a suspension system for a running gear system, a running gear system, a vehicle and a bias device.
  • Vehicle suspension systems can be complex, with a separate suspension system required for each road wheel. Vehicle suspension systems can also be susceptible to damage (for example, during a blast). Additionally, existing suspension systems can often only resist movement in a single linear direction, and are consequently susceptible to lateral loads.
  • a bias system for a suspension system for a running gear system comprising a first axle arm for attachment to a first wheel of the running gear system, the bias system comprising: a first bias device, the first bias device adapted to resist rotation of the first axle arm about a first pivot point of the running gear system.
  • the first bias device comprises a casing rotatable about the first pivot point, the casing fixed to the first axle arm.
  • the first bias device comprises an axial spring located within and fixed to the casing, wherein rotation of the casing about the first pivot point causes displacement of the axial spring so that the axial spring resists rotation of the casing about the first pivot point to resist rotation of the first axle arm about the first pivot point.
  • This arrangement of bias device provides an effective means for resisting rotation.
  • having axial spring located within the casing allows the bias system to be sealed and to contain oil or grease to provide damping, and prevents damage to the components located within the casing (for example, during a blast).
  • a first end of the axial spring is fixed to the casing, and a second end of the axial spring is fixable to the running gear system at a spring pivot point, so that rotation of the casing about the first pivot point causes rotation of the spring about the spring pivot point to cause displacement of the axial spring. Allowing the spring to rotate in this way prevents twisting of the spring, improving the reliability and consistency of the springs performance in resisting rotation of the first axle arm.
  • the axial spring is fixable to the running gear system at the spring pivot point by a spring retention cup, the spring retention cup rotatably fixable to the spring pivot point, wherein the second end of the axial spring retained by the spring retention cup.
  • the suspension system comprises a plurality of axial springs.
  • the running gear system comprises a second axle arm for attachment to a second wheel of the suspension system
  • the suspension system comprises: a second bias device, the second bias device adapted to resist rotation of the second axle arm about a second pivot point of the running gear system.
  • the second pivot point is at the same location as the first pivot point.
  • the first bias device and the second bias device are formed as a single unit.
  • a suspension system for a running gear system comprising the bias system of any preceding claim, the suspension system comprising the first wheel, the first wheel attached to the first axle arm.
  • the suspension system comprises a second wheel, the second wheel attached to the second axle arm.
  • a running gear system for a vehicle comprising a suspension system as described above and a track, wherein the first wheel is coupled to the track so that the first wheel is supported by and rotates with the track in use.
  • the second wheel is coupled to the track so that the second wheel is supported by and rotates with the track in use.
  • the running gear system comprises a connection system fixed to the running gear system, the connection system operable to couple the running gear system to a vehicle body of the vehicle.
  • connection system is configured to at least partially disconnect the running gear system from the vehicle body when a load on the connection system exceeds a threshold.
  • the load acting on the connection system exceeds the threshold, causing the running gear system to at least partially disconnect from the vehicle body. This reduces the load on the suspension system (and other systems within the running gear system and the vehicle body), and helps avoid failure of these systems.
  • the load is a torque acting on the connection system.
  • a blast is likely strike the running gear system at a point which is not aligned with a connection system, it is likely that the blast will result in a torque on the connection system.
  • connection system is configured to permit substantially free relative rotation between the running gear system and the vehicle body when the load exceeds the threshold. This further reduces the load on the suspension system and other systems within the running gear system and the vehicle body.
  • connection system comprises a first member fixed to the running gear system and a second member fixable to the vehicle body, the first member connected to the second member, the first member configured to at least partially disconnect from the second member when the load exceeds the threshold.
  • the first member is configured to rotate relative to the second member when the load exceeds the threshold.
  • connection system further comprises a fluid distribution system operable to, during relative rotation between the first member and the second member, pass fluid between the first member and the second member to thereby pass fluid between the body and the running gear system.
  • fluid systems can be located in the vehicle body rather than in the running gear system, with the fluid systems still capable of passing fluid to/from the running gear system from/to the vehicle body when there is relative rotation between the running gear system and the vehicle body (for example, to operate brakes of the running gear system using brake fluid).
  • the fluid distribution system comprises a channel between the first member and the second member.
  • the first member comprises a first port for passing fluid between the fluid channel and the running gear system.
  • the second member comprises a second port for passing fluid between the fluid channel and the vehicle body.
  • the channel is formed in the second member.
  • the connection system comprises an o-ring for sealing the channel.
  • the second member surrounds the first member.
  • the first member is connected to the second member by a shear pin, the shear pin configured to fail when the load exceeds the threshold to at least partially disconnect the running gear system from the vehicle body.
  • connection system further comprises a drive shaft operable to connect a drive system of the vehicle body to a drive train of the running gear system.
  • the drive shaft is configured to maintain connection between the drive system of the vehicle body and the drive train of the running gear system when the load exceeds the threshold.
  • the running gear system further comprises a brake system, the fluid distribution system adapted to pass fluid between the body and the brake system for use in the brake system.
  • a vehicle comprising the running gear system described above.
  • the vehicle comprises a v-shaped hull for deflecting a blast.
  • the vehicle is an unmanned vehicle.
  • the vehicle is a military vehicle.
  • the vehicle body has a first connector for forming a non-articulated connection with an additional vehicle.
  • This vehicle is advantageous, as the non-articulated connection formed between the vehicle and the additional vehicle means that if one of the vehicle and the additional vehicle is a damaged vehicle (for example, damaged by a blast), the damaged vehicle can be transported to a location for repair by the other of the first vehicle and the second vehicle.
  • the non-articulated connection means that the damaged vehicle can be transported more easily.
  • This vehicle is particularly advantageous after the partial disconnection of the running gear system from the vehicle body, because the non-articulated connection formed between the vehicle and the additional vehicle allows the vehicles to be transported to a location for repair.
  • the first connector is located at a rear of the vehicle.
  • the first connector is configured to connect to a connector portion so that the vehicle forms the non-articulated connection with the additional vehicle via the connector portion.
  • the connector portion may comprise a battery for powering the vehicle or the additional vehicle. This means that the battery can be readily replaced simply by replacing the connector portion.
  • the first connector is comprised in a main portion of the vehicle body, and the first connector is further configured to connect to a vehicle rear portion.
  • the first connector comprises an electrical connection for receiving power from a battery located in the connector portion or the vehicle rear portion.
  • the first connector comprises a rail adapted to engage a complementary rail to form the non-articulated connection.
  • the vehicle body further comprises a second connector for forming a non-articulated connection with the additional vehicle.
  • the second connector is at a front of the vehicle.
  • the second connector is comprised in a main portion of the vehicle body, and the second connector is further configured to connect to a vehicle nose portion.
  • a vehicle system comprising a first vehicle as described above and a second vehicle as described above, the first connector of the first vehicle forming a non-articulated connection with the second connector of the second vehicle.
  • This vehicle system is advantageous, as the non-articulated connection formed between the first vehicle and the second vehicle means that if one of the first vehicle and the second vehicle is a damaged vehicle (for example, damaged by a blast), the damaged vehicle can be transported to a location for repair by the other of the first vehicle and the second vehicle.
  • the non-articulated connection means that the damaged vehicle can be transported more easily.
  • the vehicle system comprises a connector portion, the first connector of the first vehicle forming a non-articulated connection with the connector portion, and the second connector of the second vehicle forming a non-articulated connection with the connector portion, so that the first connector of the first vehicle forms the non-articulated connection with the second connector of the second vehicle via the connector portion.
  • the connector portion comprises a battery for powering at least one of the first vehicle and the second vehicle.
  • a bias device comprising: a casing rotatable about a pivot point; and an axial spring located within and fixed to the casing, wherein rotation of the casing about the pivot point causes displacement of the axial spring so that the axial spring resists rotation of the casing about the pivot point.
  • FIG. 1 shows a rear view of a vehicle
  • FIG. 2 shows a perspective view of a vehicle
  • FIG. 3 shows a perspective view and schematic drawings of a bias system and a bias device
  • FIG. 4 shows a cut away perspective view of a running gear system
  • FIG. 5 shows an exploded perspective view of a vehicle body
  • FIG. 6 shows an exploded perspective view of a portion of a vehicle system
  • FIG. 7 shows a perspective view of a vehicle system.
  • a vehicle 2 comprises a first running gear system 4a, a second running gear system 4b and a vehicle body 6.
  • the first running gear system 4a is coupled to the vehicle body 6 by a first connection system 8a (described in more detail below with respect to FIG. 4).
  • the second running gear system 4b is coupled to the vehicle body 6 by a second connection system 8b.
  • the vehicle 2 is a ground based vehicle.
  • Each of the first running gear system 4a and the second running gear system 4a comprises a track for contacting the ground and driving the vehicle 2.
  • the vehicle 2 is an unmanned military vehicle, and comprises a v-shaped hull in its vehicle body 6 for deflecting a blast.
  • the first running gear system 4a and the second running gear system 4b are located on opposing sides of the vehicle body 6.
  • the second running gear system 4b comprises all of the features of the first running gear system 4a, but is a mirror image of the first running gear system 4a.
  • the second connection system 8b comprises all of the features of the first running gear system 4a, but is a mirror image of the first running gear system 4a. Only the first running gear system 4a and first connection system 8a are described here.
  • the first running gear system 4a comprises a first suspension system 10a and a second suspension system 10b.
  • the second suspension system 10b comprises all of the features of the first suspension system 10a, but is located further towards a rear of the vehicle 2 than the first suspension system 10a. Only the first suspension system 10a is described here.
  • the first suspension system 10a comprises a bias system 12, a first wheel 14a and a second wheel 14b.
  • the first wheel 14a and the second wheel 14b are road wheels.
  • the bias system 12 comprises a first bias device 13a and a second bias device 13b.
  • the bias system 12 comprises a first axle arm 16a.
  • the first axle arm 16a attaches the first bias device 13a to the first wheel 14a via a first axle.
  • the bias system 12 comprises a second axle arm 16b.
  • the second axle arm 16b attaches the second bias device 13b to a second wheel 14b via a second axle.
  • the first wheel 14a and the second wheel 14b are supported by and rotate with the track in use.
  • first axle and the second axle extends substantially horizontally in use.
  • the first axle arm 16a and the second axle arm 16b extend from their respective bias device to their respective axle in a substantially vertical plane in use.
  • the first axle arm 16a and the second axle arm 16b extend from their respective bias device to their respective axle in the plane of the running gear system 4a.
  • FIG. 3 there are shown drawings of the bias system 12 and the first bias device 13a.
  • the second bias device 13b comprises all of the features of the first bias device 13a, so only the first bias device 13a is described here.
  • the first bias device 13a comprises a casing 20.
  • the casing 20 is substantially cylindrical.
  • the first bias device 13a comprises a first axial spring 18a, a second axial spring 18b, a third axial spring 18c and a fourth axial spring 18d.
  • a first end of each of the first axial spring 18a, the second axial spring 18b, the third axial spring 18c and the fourth axial spring 18d is fixed to the casing 20.
  • the first to fourth axial springs 18a-d are substantially evenly spaced around the casing 20.
  • the casing 20 is hollow, and the first to fourth axial springs 18a- d are located entirely within the casing 20.
  • the bias device 13a further comprises a cover portion (see FIG.
  • the casing 20 is filled with oil. Having the axial springs 18a-d located in the casing 20 protects the axial springs 18a-d from damage (for example, during a blast).
  • the casing 20 is rotatable about a first pivot point 22.
  • the first pivot point 22 is rigidly fixed to the first running gear system 4a. More specifically, the first pivot point 22 is rigidly fixed to at least one of a first plate (FIG. 4: 26a) and a second plate (FIG. 4: 26b).
  • the casing 20 is attached to the first axle arm 16a. More specifically, the casing 20 is integrally formed with the first axle arm 16a.
  • a second end of the first axial spring 18a is retained by a first spring retention cup 24a.
  • a second end of the second axial spring 18b is retained by a second spring retention cup 24b.
  • a second end of the third axial spring 18c is retained by a third spring retention cup 24c.
  • a second end of the fourth axial spring 18d is retained by a fourth spring retention cup 24d.
  • Each of the first to fourth spring retention cups 24a-d is rotatably fixed to a spring pivot point.
  • Each spring pivot point is rigidly fixed to the running gear system 4a. More specifically, each spring pivot point is rigidly fixed to at least one of a first plate (FIG. 4: 26a) and a second plate (FIG. 4: 26b). This means that when the casing 20 rotates about the first pivot point 22, it also rotates relative to the spring pivot points.
  • the casings 20 of the first and second bias devices 13a, 13b are rotatable independently of each other.
  • the first and second bias devices 13a, 13b are formed as a single unit, with their casings coaxial and adjacent to each other. This reduces the space required for the bias system 12.
  • the second bias device 13b is located inboard of the first bias device 13a, towards the vehicle body 6.
  • the first and second bias devices 13a, 13b share a common pivot point 22.
  • the first to fourth axial springs 18a-18d rotate about their respective spring pivot points (in the plane of the first running gear system 4a), effecting displacement of the first to fourth axial springs 18a-d.
  • the displacement of the first to fourth axial springs 18a-d causes the springs to produce a force which resists rotation of the casing 20 about the first pivot point 22.
  • the oil located within the casing 20 provides damping to further resist rotation of the casing 20 about the first pivot point 22.
  • the first wheel 14a displaces upwards, which causes the first axle arm 16a to rotate about the first pivot point 22.
  • the rotation of the first axle arm 16a causes rotation of the casing 20, which is resisted by the axial springs 18a-d as described above.
  • the second bias device 13b operates in the same manner with respect to the second axle arm 16b and the second wheel 14b.
  • the bias system provides a simple suspension system for resisting upwards displacement of the first wheel. In contrast to suspension systems with linear springs, the bias system is less affected by lateral loads on the first wheel.
  • the first running gear system 4a comprises a first plate 26a and a second plate 26b.
  • the first connection system 8a comprises a first member 28, which is fixed to the first running gear system 4a. More specifically, the first member 28 is rigidly fixed to a first plate 26a of the first running gear system 4a and a second plate 26b of the running gear system.
  • the first connection system 8a comprises a second member 30.
  • the second member is fixed to the vehicle body 6. More specifically, the second member is rigidly fixed to the vehicle body 6.
  • the first member 28 comprises a substantially cylindrical aperture, in which a substantially cylindrical portion of the second member 30 is received.
  • the second member 30 is supported in the first member by a first bearing 34a and a second bearing 34b.
  • the first connection system 8a comprises a drive shaft 32.
  • the second member 30 comprises a substantially cylindrical aperture, in which the drive shaft 32 is received.
  • the drive shaft is supported in the second member by further bearings 35.
  • the drive shaft 32 connects a motor (not shown) located within the vehicle body 6 to a drivetrain (not shown) of the first running gear system 4a.
  • a series of shear pins (not shown) couple the first member 28 to the second member
  • the shear pins extend between apertures of the first member 28 and the second member 30, preventing the first member 28 rotating relative to the second member.
  • the first connection system 8a couples the running gear system 4a to the vehicle body 6.
  • the second member 30 comprises a fluid distribution system.
  • the fluid distribution system comprises a channel 36, which extends fully around the circumference of the second member 30.
  • the second member 30 surrounds the first member 28.
  • the first member 28 comprises a first port (not shown), which aligns with the channel 36.
  • the second member 30 comprises a second port (not shown), which is located within the channel 36.
  • the first connection system 8a comprises a seal 38 which seals the channel 36.
  • the seal 38 is an o- ring located within the channel 36.
  • the first port is in fluid communication with a brake system (not shown).
  • the second port is in fluid communication with the vehicle body 6. This means that the channel and the first and second ports provide fluid communication between the brake system and the vehicle body 6.
  • the drive shaft 32 drives the track of the first running gear system 4a via the drivetrain.
  • Brake fluid is passed from the vehicle body 6 to the brake system via the channel 36 of the first connection system 8a to operate brakes (not shown) of the first running gear system 4a.
  • the first connection system 8a When a load on the first connection system 8a exceeds a threshold (for example, due to a blast acting on the first running gear system 4a), the first connection system 8a partially disconnects the first running gear system 4a from the vehicle body 6. More specifically, when a torque on the first connection system 8a exceeds a threshold (for example, due to a blast acting on the first running gear system 4a), the first connection system 8a partially disconnects the first running gear system 4a from the vehicle body 6. This is achieved by shearing of the shear pins, which allows substantially free relative rotation to occur between the first member 28 and the second member 30. Allowing rotation in this way reduces the load on the suspension system (and other systems within the running gear system and the vehicle body), and helps avoid failure of these systems.
  • the first bearing 34a and the second bearing 34b continue to support the second member 30 within the first member 28, thereby preventing relative displacement between the first member 28 and the second member 30.
  • the vehicle body 6 comprises a main portion 40, a vehicle rear portion 42 and a vehicle nose portion 44.
  • the main portion 40 comprises the motor (not shown) and the vehicle rear portion 42 comprises a battery for powering the motor.
  • the main portion 40 comprises a first connector 43, located at a rear of the main portion 40.
  • the first connector 43 comprises an electrical connection (not shown) for receiving power from the battery.
  • the first connector 43 comprises a pair of first rails 48a 48b.
  • the first connector comprises a pair of pins 50 and a series of loops 52.
  • the vehicle rear portion 42 comprises a pair of second rails (not shown), which are complementary to the first rails 48a 48b.
  • the vehicle rear portion 42 comprises a series of loops 52.
  • the first connector 43 connects the main portion 40 to the vehicle rear portion 42 using the first rails 48a 48b, which engage with the second rails, and the pins 50, which pass through interlocking loops 52 of the main portion 40 and the vehicle rear portion 42.
  • the main portion 40 comprises a second connector 45, located at a front of the main portion 40.
  • the second connector 45 comprises a series of loops 52 and a pair of pins 50.
  • the vehicle nose portion 44 comprises a series of loops 52.
  • the second connector 45 connects the main portion 40 to the vehicle nose portion 44 using the pins 50, which pass through interlocking loops of the main portion 40 and the vehicle front portion 42.
  • the vehicle system 54 comprises a first vehicle 2a and a second vehicle 2b.
  • the first vehicle 2a comprises a first vehicle body 6a, which comprises a main portion 40a and a vehicle nose portion 44, connected together as described above.
  • the second vehicle 2b comprises a second vehicle body 6b, which comprises a main portion 40b and a vehicle rear portion 42, connected together as described above.
  • the vehicle system 54 further comprises a connector portion 46.
  • 46 comprises a battery, for powering the motor of the first vehicle 2a.
  • the connector portion 46 comprises a pair of second rails (not shown) at a front of the connector portion 46.
  • the pair of second rails of the connector portion 46 is identical to the pair of second rails of the vehicle rear portion 42, as described above.
  • the connector portion 46 comprises series of loops 52 at a rear of the connector portion 46.
  • the series of loops 52 of the connector portion 46 are identical to those of vehicle nose portion 44, as described above.
  • the connector portion 46 connects to the main portion 40a of the first vehicle 2a via the first connector 43 of the main portion 40a of the first vehicle 2a and the pair of second rails of the connector portion 46.
  • the connector portion 46 connects to the main portion 40a of the second vehicle 2b via the second connector 45 of the main portion 40a of the second vehicle 2b and the series of loops 52 of the connector portion 46.
  • This provides a non-articulated and substantially rigid connection between the first vehicle 2a and the second vehicle body 2b, formed by the first connector 43 of the first vehicle 2a and the second connector 45 of the second vehicle 2b.
  • the electrical connection of the first connector 43 receives power from the battery located in the connector portion 46.
  • the non-articulated connection formed between the first vehicle and the second vehicle means that if one of the first vehicle and the second vehicle is a damaged vehicle (for example, damaged by a blast), the damaged vehicle can be transported to a location for repair by the other of the first vehicle and the second vehicle.
  • the non-articulated connection means that the damaged vehicle can be transported more easily.
  • the vehicle system 54 is particularly advantageous after the partial disconnection of the running gear system from the vehicle body (as described above) of one of the first vehicle and the second vehicle, as the non-articulated connection formed between the first vehicle and the second vehicle allows the vehicle system to be transported by the other of the first vehicle and the second vehicle to a location for repair. It will be appreciated that main portion 40, vehicle rear portion 42, vehicle nose portion
  • a non-articulated connection might therefore allow a single, rigid system to be formed in a modular (or similar) manner.
  • the non-articulated connection might, in general, mean that a single rigid vehicle system can be easily and conveniently realised. This is in contrast with an articulated connection, which is typically for allowing improved manoeuvrability between bodies. Therefore, it is counterintuitive to connect vehicle bodies in a non-articulated manner.
  • first connector 43 While the specific form of the first connector 43 described herein is particularly advantageous, it will be appreciated that the first connector could take an alternative form, provided that the first connector of the vehicle is able to form a non-articulated connection with an additional vehicle (for example, via the connector portion and a second connector of the additional vehicle as described above). Additionally, while the specific form of the second connector 45 described herein is particularly advantageous, it will be appreciated that the second connector could take an alternative form, provided that the second connector of the vehicle is able to form a non-articulated connection with an additional vehicle (for example, via the connector portion and a first connector of the additional vehicle as described above).
  • a first vehicle as described above may be connected or connectable to a second vehicle as described above.
  • Each vehicle may comprise one or more features of functions as described above.
  • Two connected vehicles may be preferable to one, larger or longer vehicle, since two vehicles allow for flexibility in terms of a modular approach to the design and functionality of the vehicles, and related interchanging of the vehicles. This might be useful for implementing different functionalities, or even for maintenance and repair.
  • One vehicle for example a lead vehicle or a trailing vehicle, might be a primary or master vehicle.
  • One or more other connected or connectable vehicles may be a secondary or slave vehicle.
  • Primary or main might mean that the vehicle comprises the, or the main, control system or similar for the overall set of vehicles, or the drive mechanism, or a power source.
  • Secondary or slave might mean that the vehicle does not comprise the, or the main, control system or similar for the overall set of vehicles, or the drive mechanism, or a power source.
  • the secondary or slave vehicle might therefore be at least partially, mainly or wholly controlled by, or driven by, or powered by, the primary or main vehicle.
  • One, more or all vehicles of the connected vehicles may be tracked. This may assist the vehicle in travelling around and across terrain. Also, all vehicles being tracked might be useful if vehicle roles are to be reversed, in terms of the interchangeable nature of the vehicles, as above. Also, all vehicles being tracked might make it easier for the vehicles to, together, travel in different directions (e.g. forwards and backwards), so that there is not, for example, a lead tracked vehicle and a trail or slave wheeled vehicle or trailer. One, more or all vehicles may be unmanned. This might mean that the vehicle does not, or cannot (e.g. is not shaped or designed) house a driver or pilot or other human controller.
  • One, more or all vehicles may be unmanned, and/or be autonomous, in that they can be controlled without need for the presence of a human user in or on the vehicle.
  • One, more or all vehicles may be autonomous, in that they are capable of following another vehicle or moving object (e.g. a person). All of this might allow for the one, more or all vehicles to be used in a wide range of applications, all whilst limiting or reducing the risks to personnel, which risks may be high in a potentially dangerous setting (for example in terms of emergency services-like applications, or military applications).
  • Much, in not all, of the functionality above is specifically designed with unmanned operation in mind.
  • the functionality can be applied to manned vehicles, the functionality above facilitates maintained operation of a vehicle when, for example, a blast or explosion takes place proximal to the vehicle.
  • This functionality more easily allows for the vehicle to be unmanned, since then no operators are required to fix the vehicles once damaged, in the vicinity of the location where the blast took place - the vehicle can continue to operate, and move, without immediate repair.
  • One, more or all vehicles may be unmanned. This might allow for efficient operation and/or maintenance of the vehicles, in terms of the batteries being easily replaceable and so on, as opposed to combustion-engine maintenance being required, etc. Again, this might find synergy with unmanned vehicles, where maintenance on-the-fly will not be possible or practical. Also, this may allow the battery to be recharged in-use, for example by solar or wind power, which might allow a vehicle (e.g. and particularly an unmanned vehicle) to spend prolonged periods in use, for example on a patrol or scouting mission, or a rescue mission, or to spend a long time in a stasis-like or hibernating state.
  • a vehicle e.g. and particularly an unmanned vehicle
  • the battery or batteries may not be hard-wired in to the vehicle, but may be readily loaded, re-loaded, interchanged with spare batteries, and so on, again to facilitate ease of use and maintenance.
  • the battery may be readily loaded or brought into and out of engagement with electrical connectors of the vehicle in a slot-like, or cassette-like, or plug and socket-like, manner.
  • one or more vehicles may be configured to carry a person, for example an injured person.
  • the one or more vehicles may serve as a mobile stretcher, or stretcher bearer, for example being controllable to move toward and into proximity with an injured person, for that person to climb onto, or be loaded onto, the one or more vehicles.
  • An uppermost surface of the one or more vehicles may serve as a region on which a person may sit or lie. The surface might be planar, or convex (e.g. bowl-like or half-pipe section-like), to support or retain the person.
  • One or more dedicated retaining straps, arms or members in general may be used by the user, or controlled by the vehicle (autonomously, or via command of the person or another user), to move from a disengaged to an engaged state, once a person is suitably positioned on the vehicle.
  • the surface might on one vehicle, or across more than one vehicle. If across (even discontinuously) more than one vehicle, a non-articulated connection between vehicles may limit or prevent substantial movement between such vehicles, maintain the profile of the surface, and the position or pose of the person. This might be desirable for comfort or damage-limitation purposes with respect to the carried person.
  • the damage avoidance or compensation discussed above, in combination with the unmanned nature leads to an efficient and effective way of transporting a person out of a dangerous situation, whilst limiting exposure of other people to that dangerous situation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne un système de sollicitation destiné à un système de suspension pour un système de train de roulement et comprenant un premier bras d'essieu destiné à être fixé à une première roue du système de train de roulement, le système de sollicitation comprenant un premier dispositif de sollicitation, le premier dispositif de sollicitation étant conçu pour résister à la rotation du premier bras d'essieu autour d'un premier point de pivotement du système de train de roulement.
PCT/GB2018/052397 2017-09-04 2018-08-23 Système de suspension Ceased WO2019043361A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB1714154.0A GB2566087A (en) 2017-09-04 2017-09-04 Suspension system
EP17275138.0 2017-09-04
EP17275138.0A EP3450225A1 (fr) 2017-09-04 2017-09-04 Système de suspension
GB1714154.0 2017-09-04

Publications (1)

Publication Number Publication Date
WO2019043361A1 true WO2019043361A1 (fr) 2019-03-07

Family

ID=63312194

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2018/052397 Ceased WO2019043361A1 (fr) 2017-09-04 2018-08-23 Système de suspension

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Country Link
WO (1) WO2019043361A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12304579B2 (en) 2021-06-02 2025-05-20 Soucy International Inc. Support structure for connecting a plurality of support wheel assemblies to a frame member of a track system and track system having the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR808204A (fr) * 1935-10-16 1937-02-01 Anciens Ets Hotchkiss & Cie Perfectionnements aux dispositifs de suspension des véhicules à chenilles
US2149297A (en) * 1937-09-20 1939-03-07 Harry A Knox Suspension for vehicles
US2355456A (en) * 1941-09-05 1944-08-08 Vivian Graham Loyd Resilient mounting
CH379339A (de) * 1960-02-02 1964-06-30 Ruf Walter Laufradabfederung an Panzerfahrzeugen
US20050087374A1 (en) * 2001-12-07 2005-04-28 Helmut Kanzler Chain drive assembly for a tracked vehicle
ES1066899U (es) * 2007-06-28 2008-04-01 Aquiles Robotics Systems, S.L. Vehiculo robotico modular transportable por humanos para misiones de alto riesgo.
WO2017098216A2 (fr) * 2015-12-08 2017-06-15 Bae Systems Plc Transmission

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR808204A (fr) * 1935-10-16 1937-02-01 Anciens Ets Hotchkiss & Cie Perfectionnements aux dispositifs de suspension des véhicules à chenilles
US2149297A (en) * 1937-09-20 1939-03-07 Harry A Knox Suspension for vehicles
US2355456A (en) * 1941-09-05 1944-08-08 Vivian Graham Loyd Resilient mounting
CH379339A (de) * 1960-02-02 1964-06-30 Ruf Walter Laufradabfederung an Panzerfahrzeugen
US20050087374A1 (en) * 2001-12-07 2005-04-28 Helmut Kanzler Chain drive assembly for a tracked vehicle
ES1066899U (es) * 2007-06-28 2008-04-01 Aquiles Robotics Systems, S.L. Vehiculo robotico modular transportable por humanos para misiones de alto riesgo.
WO2017098216A2 (fr) * 2015-12-08 2017-06-15 Bae Systems Plc Transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12304579B2 (en) 2021-06-02 2025-05-20 Soucy International Inc. Support structure for connecting a plurality of support wheel assemblies to a frame member of a track system and track system having the same

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