WO2014060279A1 - Mounting assembly for vehicle and vehicle incorporating such assembly - Google Patents

Mounting assembly for vehicle and vehicle incorporating such assembly Download PDF

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Publication number
WO2014060279A1
WO2014060279A1 PCT/EP2013/071128 EP2013071128W WO2014060279A1 WO 2014060279 A1 WO2014060279 A1 WO 2014060279A1 EP 2013071128 W EP2013071128 W EP 2013071128W WO 2014060279 A1 WO2014060279 A1 WO 2014060279A1
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WO
WIPO (PCT)
Prior art keywords
ground engaging
vehicle body
vehicle
assembly according
ground
Prior art date
Application number
PCT/EP2013/071128
Other languages
French (fr)
Inventor
James Cross
Neil Armstrong
Original Assignee
Pearson Engineering Limited
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 Pearson Engineering Limited filed Critical Pearson Engineering Limited
Priority to GB1505411.7A priority Critical patent/GB2521564A/en
Publication of WO2014060279A1 publication Critical patent/WO2014060279A1/en

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Classifications

    • 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
    • F41H11/00—Defence installations; Defence devices
    • F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
    • F41H11/16—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles
    • F41H11/20—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles with ground-penetrating elements, e.g. with means for removing buried landmines from the soil
    • 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
    • F41H11/00—Defence installations; Defence devices
    • F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
    • F41H11/16—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles
    • F41H11/30—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles with rollers creating a surface load on the ground, e.g. steadily increasing surface load, for triggering purposes

Definitions

  • the present invention relates to a mounting assembly for a vehicle and to a vehicle incorporating such an
  • the invention relates particularly, but not
  • Mine detonating vehicles are known in which a roller assembly supported by the vehicle applies pressure to the ground to detonate mines to clear a pair of tracks to be followed by the wheels of the vehicle. Such a vehicle is disclosed in US2004/0035285.
  • a mounting assembly for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground
  • the mounting assembly comprising:- a first member adapted to be connected to first ground engaging means ; a second member adapted to be connected to a vehicle body; first coupling means adapted to transfer torque about a first torque axis from said first member to said second member and to allow .translation of said first member relative to said second member in a direction not parallel to said first torque axis; and second coupling means adapted to (i) prevent
  • this provides the advantage of preventing detonation forces caused by detonation of a large explosive device from being transferred to the vehicle body, while enabling significant levels of torque about the torque axis to be transferred during normal operation of the vehicle. This in turn reduces the likelihood of injury to the
  • the first coupling means may comprise a third member adapted to (i) engage the first member to prevent rotation of said third member relative to said first member and allow translation of said third member relative to said first member along a first direction; and (ii) engage the second member and prevent rotation of said third member relative to said second member and allow translation of said third member relative to said second member along a second direction transverse to said first direction.
  • the first coupling means may further comprise at least one first protrusion on one of said first and third members, and at least one first slot on the other of said first and third members for engaging at least one respective said first protrusion.
  • the first coupling means may further comprise at least one second protrusion on one of said second and third
  • the second coupling means may comprise at least one frangible member.
  • This provides the advantage of enabling separation of the first ground engaging means from the vehicle body by means of a simple construction.
  • At least one said frangible member may comprise a shear bolt.
  • At least one said frangible member may engage said first and second members.
  • the mounting assembly may be adapted to enable said first ground engaging means to separate from the vehicle body.
  • the assembly may further comprise third coupling means for allowing separation of said first and second members when the load applied to said first ground engaging means causes failure of said second coupling means.
  • the third coupling means may comprise at least one clamping member.
  • the assembly may further comprise second ground
  • the second ground engaging means may comprise at least one skid.
  • a vehicle comprising: - a vehicle body; first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground; and a mounting assembly as defined above for connecting the first ground engaging means to the vehicle body.
  • the first ground engaging means may comprise at least one ground engaging roller.
  • a vehicle body for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the vehicle body comprising a plurality of seats for
  • a plurality of said seats are spaced apart in a direction of travel of the vehicle, and are arranged at decreasing height in the direction of travel of the vehicle.
  • a vehicle body for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the vehicle body comprising a mounting portion adapted to engage said first ground engaging means, and second ground engaging means adapted to engage the ground when said first ground engaging means is separated from said mounting
  • the second ground engaging means may comprise at least one skid.
  • a mounting assembly for a ground engaging member of a vehicle comprising a vehicle body, a manipulator arm connected to the vehicle body, and a ground engaging member mounted to the manipulator arm, the assembly
  • a support adapted to be mounted to a manipulator arm and comprising support means for supporting a ground engaging member to allow pivoting of the ground engaging member relative to the support;
  • locking means for (i) preventing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is insufficient to cause failure of the locking means and (ii) allowing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is sufficient to cause failure of the locking means.
  • the locking means may comprise at least one frangible member. At least one said frangible member may comprise a shear bolt .
  • the support means may comprise at least one first abutment member and at least one second abutment member for engaging the ground engaging member.
  • a vehicle comprising a vehicle body, a manipulator arm connected to the vehicle body, a ground engaging member mounted to the manipulator arm, and a
  • FIG. 1 is a perspective view of a mine detonating vehicle embodying the present invention
  • Figure 2 is a perspective view of a roller assembly of the vehicle of Figure 1 seen from the front, side and above in a partially dismantled condition;
  • Figure 3 is a view of the roller assembly of Figure 2 seen from the rear, side and above in a partially dismantled condition;
  • Figure 4 is a view corresponding to Figure 2, with a mounting assembly of the roller assembly shown in cross- section;
  • Figure 5 is a side cross-sectional view of the roller assembly of Figure 4.
  • Figure 6 is a side view of an end portion of a
  • a mine detonating vehicle 2 has a vehicle body 4 supporting a pair of front roller assemblies 6 mounted to a front frame 8.
  • the front roller assemblies 6 are steered by the vehicle 2 and apply pressure to the ground by means of hydraulic ram 10 to detonate mines along a pair of tracks to be followed by wheels 12 on one side of the vehicle body 4.
  • a rear roller assembly 14 is mounted to a frame 16 and is towed by the vehicle 2 to apply pressure to the ground by means of hydraulic ram 18 to detonate mines in a track between the pair of tracks cleared by the front roller assemblies 6.
  • the vehicle body 4 has occupant cabin 20 having windows 22 and seats (not shown) for the vehicle occupants, the seats being provided in a tiered arrangement so that the occupants are arranged in a line in the direction of travel of the vehicle, and with decreasing height in the direction of travel of the vehicle. This maximises the ability of the occupants to view hazards in front of and to the side of the vehicle 2.
  • the vehicle body carries a manipulator arm 24 having a ground engaging tooth 26, the function of which will be described in greater detail below.
  • the front roller assemblies 6 are connected via frame 8 to the vehicle body 4 by respective mounting assemblies 28.
  • the rear roller assembly 14 is connected via frame 16 to the vehicle body 4 by a mounting assembly 30.
  • each roller assembly 6, 14 includes a series of ground engaging rollers 32 resiliently mounted for
  • the first member 38 has a slot 48 for receiving a key plate 50 such that the key plate 50 can slide in a direction generally parallel to the rotational axes 34 of the rollers 32.
  • the key plate 50 has a protrusion 52 which engages a groove 54 ( Figure 3) in the second member 44 such that the key plate 50 can slide relative to the second member 44 in a direction perpendicular to the rotational axes 34 of the rollers 32.
  • first 38 and second 44 members can slide relative to each other in two directions transverse to the pivot axis 46, but torque can be transferred about the pivot axis 46 from the first member 38 to the second member 44.
  • This enables rotation of the respective roller assembly 6, 14 about the pivot axis 46 as a result of travel of the rollers 32 over an uneven ground surface.
  • the first 38 and second 44 members engage the key plate 50 and are prevented from sliding relative to each other in directions transverse to torque axis 46 by means of a shear bolt 56 passing through respective apertures 58, 60 in the first 38 and second 44 members.
  • the shear bolt 56 is held in position by the apertures 58, 60. Separation of the first 38 and second 44 members in a direction parallel to the longitudinal axis of the shear bolt 56 is prevented by means of a lower clamping member 62 and an upper clamping member 64.
  • the lower clamping member 62 is held in position by clamping the lower edges of the first 38 and second 44 members.
  • reaction load F R ( Figure 5) less than a threshold value, determined by the shear strength of the shear bolt 56, acting on the rollers 32 as a result of the application of pressure by the rollers 32 to the ground, or as a result of detonation of smaller mines, the reaction load F R is transferred to the support members 40 mounted to the vehicle body 4 by means of a turning moment M (caused by lateral separation l x of the line of application of reaction load F R from the mutually contacting surfaces of the first 38 and second 44 members) and a vertical load F v .
  • the turning moment M acts about a pivot axis generally parallel to the rotational axes 34 of the rollers 32 and is transferred between the first 38 and second 44 members as a result of the first 38 and second 44 members being held in contact with each other by means of the upper 64 and lower 62 clamping members .
  • the vertical load F v exceeds the shear strength of the shear bolt 56, as a result of which the shear bolt 56 fails and the first 38 and second 44 members can slide relative to each other in directions transverse to the pivot axis 46.
  • the lower clamp member 62 falls away, as a result of which the first 38 and second 44 members can separate in a direction parallel to the longitudinal axis of the shear bolt 56. In this way, it also becomes impossible to transmit the turning moment M from the first member 38 to the second member 44, and the roller assembly 6, 14 separates from the respective support member 40.
  • the skid 42 engages the ground, and prevents the support member 40 from becoming embedded in the ground, thereby maintaining
  • the ground engaging tooth 26 is mounted to the manipulator arm 24 by means of a mounting 66 on the end of manipulator arm 24.
  • a proximal end 68 of the tooth 26 is pivotably attached to the mounting 66 by means of a shear pin 70, and abuts a pair of abutment members 72, 74 provided on the mounting 66.
  • Distal end 76 of the tooth 26 can be used to investigate or manipulate objects, and in the case of a reaction force below a
  • the upward reaction force causes shear pin 70 to fail, as a result of which the tooth 26 can pivot relative to the mounting 66, thereby preventing the detonation forces from being transmitted to and damaging the manipulator arm 24.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Road Paving Machines (AREA)

Abstract

A mounting assembly (28) for a vehicle (2) comprising a vehicle body (4) and roller assemblies (6, 14) for applying pressure to the ground is disclosed. The mounting assembly comprises a first member (38) connected to a roller assembly and a second member (44) connected to the vehicle body. A key plate (50) transfers torque from the first member to the second member and allows translation of the first member relative to the second member in a direction transverse to the torque axis. A shear pin (56) prevents translation of the first member relative to the second member when a load applied to the roller assembly is insufficient to cause failure of the shear pin, and allows translation of the first member relative to the second member when the load is sufficient to cause failure of the shear pin.

Description

MOUMTING ASSEMBLY FOR VEHICLE AND VEHICLE INCORPORATING SUCH
ASSEMBLY
The present invention relates to a mounting assembly for a vehicle and to a vehicle incorporating such an
assembly. The invention relates particularly, but not
exclusively, to a mounting assembly which allows a ground engaging means of the vehicle for detonating mines or other explosive devices to be detachable from the vehicle body in the event of an explosion of sufficient size.
Mine detonating vehicles are known in which a roller assembly supported by the vehicle applies pressure to the ground to detonate mines to clear a pair of tracks to be followed by the wheels of the vehicle. Such a vehicle is disclosed in US2004/0035285.
This arrangement suffers from the drawback that if a very large mine is detonated, forces from the detonation can be transmitted from the roller assembly to the vehicle body and can cause injury to the vehicle occupants. In addition, large detonations can cause extensive structural damage to the structure to which the roller assembly is mounted. Preferred embodiments of the present invention seek to overcome the above disadvantage of the prior art.
According to an aspect of the present invention , there is provided a mounting assembly for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the mounting assembly comprising:- a first member adapted to be connected to first ground engaging means ; a second member adapted to be connected to a vehicle body; first coupling means adapted to transfer torque about a first torque axis from said first member to said second member and to allow .translation of said first member relative to said second member in a direction not parallel to said first torque axis; and second coupling means adapted to (i) prevent
translation of said first member relative to said second member in a direction not parallel to said first torque axis when a load applied to the first ground engaging means is insufficient to cause failure of said second coupling means; and (ii) allow translation of said first member relative to said second member in a direction not parallel to said first torque axis when the load applied to the first ground
engaging means is sufficient to cause failure of said second coupling means.
By providing second coupling means adapted to prevent translation of the first member relative to the second member when a load applied to the first ground engaging means is insufficient to cause failure of the second coupling means, and allow translation of the first member relative to the second member when the load applied to the first ground engaging means is sufficient to cause failure of the second coupling means, this provides the advantage of preventing detonation forces caused by detonation of a large explosive device from being transferred to the vehicle body, while enabling significant levels of torque about the torque axis to be transferred during normal operation of the vehicle. This in turn reduces the likelihood of injury to the
occupants of the vehicle. In addition, this provides the advantage of minimising the extent of damage to structures to which the first ground engaging means is attached, which enables the vehicle to carry spare first ground engaging means, so that repairs can be carried out in theatre. The first coupling means may comprise a third member adapted to (i) engage the first member to prevent rotation of said third member relative to said first member and allow translation of said third member relative to said first member along a first direction; and (ii) engage the second member and prevent rotation of said third member relative to said second member and allow translation of said third member relative to said second member along a second direction transverse to said first direction. This provides the advantage of enabling the first ground engaging means to be separable from the vehicle body by means of a simple construction.
The first coupling means may further comprise at least one first protrusion on one of said first and third members, and at least one first slot on the other of said first and third members for engaging at least one respective said first protrusion. The first coupling means may further comprise at least one second protrusion on one of said second and third
members, and at least one second slot on the other of said second and third members for engaging at least one respective said second protrusion.
The second coupling means may comprise at least one frangible member.
This provides the advantage of enabling separation of the first ground engaging means from the vehicle body by means of a simple construction.
At least one said frangible member may comprise a shear bolt.
At least one said frangible member may engage said first and second members.
The mounting assembly may be adapted to enable said first ground engaging means to separate from the vehicle body.
This provides the advantage of enabling the vehicle to be driven more easily in the event of destruction of the first ground engaging means. The assembly may further comprise third coupling means for allowing separation of said first and second members when the load applied to said first ground engaging means causes failure of said second coupling means.
The third coupling means may comprise at least one clamping member. The assembly may further comprise second ground
engaging means adapted to engage the ground when said first ground engaging means separates from said vehicle. This provides the advantage of enabling the second ground engaging means to be constructed in a suitable manner to enable the vehicle to be driven stably in the event that the first ground engaging means becomes separated from the vehicle and therefore no longer supports the vehicle.
The second ground engaging means may comprise at least one skid.
This provides the advantage of enabling the vehicle to be supported by means of a simple and robust construction.
According to another aspect of the present invention, there is provided a vehicle comprising: - a vehicle body; first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground; and a mounting assembly as defined above for connecting the first ground engaging means to the vehicle body.
The first ground engaging means may comprise at least one ground engaging roller.
According to a further aspect of the present invention, there is provided a vehicle body for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the vehicle body comprising a plurality of seats for
occupants of the vehicle, wherein a plurality of said seats are spaced apart in a direction of travel of the vehicle, and are arranged at decreasing height in the direction of travel of the vehicle.
According to a further aspect of the present invention, there is provided a vehicle body for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the vehicle body comprising a mounting portion adapted to engage said first ground engaging means, and second ground engaging means adapted to engage the ground when said first ground engaging means is separated from said mounting
portion.
The second ground engaging means may comprise at least one skid.
According to a further aspect of the present invention, there is provided a mounting assembly for a ground engaging member of a vehicle comprising a vehicle body, a manipulator arm connected to the vehicle body, and a ground engaging member mounted to the manipulator arm, the assembly
comprising:
a support adapted to be mounted to a manipulator arm and comprising support means for supporting a ground engaging member to allow pivoting of the ground engaging member relative to the support; and
locking means for (i) preventing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is insufficient to cause failure of the locking means and (ii) allowing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is sufficient to cause failure of the locking means.
By providing locking means for (i) preventing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is insufficient to cause failure of the locking means and (ii) allowing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is sufficient to cause failure of the locking means, this provides the
advantage of isolating loads generated by detonation of large explosive devices from the support, thereby minimising damage to the manipulator arm.
The locking means may comprise at least one frangible member. At least one said frangible member may comprise a shear bolt .
The support means may comprise at least one first abutment member and at least one second abutment member for engaging the ground engaging member.
According to a further aspect of the present invention, there is provided a vehicle comprising a vehicle body, a manipulator arm connected to the vehicle body, a ground engaging member mounted to the manipulator arm, and a
mounting assembly as defined above for connecting the ground engaging member to the manipulator arm. A preferred embodiment of the invention will now be described, by way of example only and not in any limitative sense, with reference to the accompanying drawings, in which : -
Figure 1 is a perspective view of a mine detonating vehicle embodying the present invention;
Figure 2 is a perspective view of a roller assembly of the vehicle of Figure 1 seen from the front, side and above in a partially dismantled condition;
Figure 3 is a view of the roller assembly of Figure 2 seen from the rear, side and above in a partially dismantled condition;
Figure 4 is a view corresponding to Figure 2, with a mounting assembly of the roller assembly shown in cross- section;
Figure 5 is a side cross-sectional view of the roller assembly of Figure 4; and
Figure 6 is a side view of an end portion of a
manipulator arm of the vehicle of Figure 1.
Referring to Figure 1, a mine detonating vehicle 2 has a vehicle body 4 supporting a pair of front roller assemblies 6 mounted to a front frame 8. The front roller assemblies 6 are steered by the vehicle 2 and apply pressure to the ground by means of hydraulic ram 10 to detonate mines along a pair of tracks to be followed by wheels 12 on one side of the vehicle body 4. A rear roller assembly 14 is mounted to a frame 16 and is towed by the vehicle 2 to apply pressure to the ground by means of hydraulic ram 18 to detonate mines in a track between the pair of tracks cleared by the front roller assemblies 6.
The vehicle body 4 has occupant cabin 20 having windows 22 and seats (not shown) for the vehicle occupants, the seats being provided in a tiered arrangement so that the occupants are arranged in a line in the direction of travel of the vehicle, and with decreasing height in the direction of travel of the vehicle. This maximises the ability of the occupants to view hazards in front of and to the side of the vehicle 2. The vehicle body carries a manipulator arm 24 having a ground engaging tooth 26, the function of which will be described in greater detail below.
The front roller assemblies 6 are connected via frame 8 to the vehicle body 4 by respective mounting assemblies 28. The rear roller assembly 14 is connected via frame 16 to the vehicle body 4 by a mounting assembly 30. Referring to
Figures 2 to 4 , each roller assembly 6, 14 includes a series of ground engaging rollers 32 resiliently mounted for
rotation about independent rotation axes 34 and supported by a frame member 36 to which a first member 38 is attached. A support member 40 mounted to the respective frame 8, 16 carries a skid 42 (the operation of which will be described in greater detail below) and a second member 44 is mounted to the support 40 for rotation about a pivot axis 46 (Figure 4) . The first member 38 has a slot 48 for receiving a key plate 50 such that the key plate 50 can slide in a direction generally parallel to the rotational axes 34 of the rollers 32. The key plate 50 has a protrusion 52 which engages a groove 54 (Figure 3) in the second member 44 such that the key plate 50 can slide relative to the second member 44 in a direction perpendicular to the rotational axes 34 of the rollers 32. In this way, the first 38 and second 44 members can slide relative to each other in two directions transverse to the pivot axis 46, but torque can be transferred about the pivot axis 46 from the first member 38 to the second member 44. This enables rotation of the respective roller assembly 6, 14 about the pivot axis 46 as a result of travel of the rollers 32 over an uneven ground surface.
Referring to Figures 2 and 5, the first 38 and second 44 members engage the key plate 50 and are prevented from sliding relative to each other in directions transverse to torque axis 46 by means of a shear bolt 56 passing through respective apertures 58, 60 in the first 38 and second 44 members. The shear bolt 56 is held in position by the apertures 58, 60. Separation of the first 38 and second 44 members in a direction parallel to the longitudinal axis of the shear bolt 56 is prevented by means of a lower clamping member 62 and an upper clamping member 64. The lower clamping member 62 is held in position by clamping the lower edges of the first 38 and second 44 members. In normal operation of the vehicle 2, as the roller assemblies 6, 14 pass over the ground, unevenness in the ground causes the respective frame members 36 of the roller assemblies 6, 14 to pivot about the pivot axis 46 (Figure 4), as a result of which torque about the pivot axis 46 is transferred from the first member 38 to the second member 44 via the key plate 50. Sliding movement of the first 38 and second 44 members relative to each other in directions transverse to the pivot axis 46 is prevented by the shear bolt 56. For reaction forces FR (Figure 5) less than a threshold value, determined by the shear strength of the shear bolt 56, acting on the rollers 32 as a result of the application of pressure by the rollers 32 to the ground, or as a result of detonation of smaller mines, the reaction load FR is transferred to the support members 40 mounted to the vehicle body 4 by means of a turning moment M (caused by lateral separation lx of the line of application of reaction load FR from the mutually contacting surfaces of the first 38 and second 44 members) and a vertical load Fv. The turning moment M acts about a pivot axis generally parallel to the rotational axes 34 of the rollers 32 and is transferred between the first 38 and second 44 members as a result of the first 38 and second 44 members being held in contact with each other by means of the upper 64 and lower 62 clamping members .
In the event of detonation of a large mine likely to cause injury to the occupants of the vehicle, on the other hand, the vertical load Fv exceeds the shear strength of the shear bolt 56, as a result of which the shear bolt 56 fails and the first 38 and second 44 members can slide relative to each other in directions transverse to the pivot axis 46. As a result, it is no longer possible to transmit vertical loads from the first member 38 to the second member 44, which prevents the detonation forces from being transferred from the roller assembly 6, 14 to the vehicle body 4. At the same time, the lower clamp member 62 falls away, as a result of which the first 38 and second 44 members can separate in a direction parallel to the longitudinal axis of the shear bolt 56. In this way, it also becomes impossible to transmit the turning moment M from the first member 38 to the second member 44, and the roller assembly 6, 14 separates from the respective support member 40.
In the event of the roller assembly 6, 14 being separated from the respective support member 40, the skid 42 engages the ground, and prevents the support member 40 from becoming embedded in the ground, thereby maintaining
stability of the vehicle 2 and enabling the vehicle 2 to continue to be driven.
Referring now to Figures 1 and 6, the ground engaging tooth 26 is mounted to the manipulator arm 24 by means of a mounting 66 on the end of manipulator arm 24. A proximal end 68 of the tooth 26 is pivotably attached to the mounting 66 by means of a shear pin 70, and abuts a pair of abutment members 72, 74 provided on the mounting 66. Distal end 76 of the tooth 26 can be used to investigate or manipulate objects, and in the case of a reaction force below a
threshold value determined by the shear strength of shear pin 70, an upward reaction force on the distal end 76 is
transmitted via shear pin 70 to the mounting 66 and
manipulator arm 24. In the event of a large upward reaction force, for example as a result of a large detonation, the upward reaction force causes shear pin 70 to fail, as a result of which the tooth 26 can pivot relative to the mounting 66, thereby preventing the detonation forces from being transmitted to and damaging the manipulator arm 24.
It will be appreciated by persons skilled in the art that the above embodiment has been described by way of example only and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the invention as defined by the appended claims. For example, it will be appreciated by- persons skilled in the art that the invention can be used in connection with pressure activated devices other than mines, such as improvised explosive devices (IEDs) .

Claims

1. A mounting assembly for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the mounting assembly comprising: - a first member adapted to be connected to first ground engaging means ; a second member adapted to be connected to a vehicle body; first coupling means adapted to transfer torque about a first torque axis from said first member to said second member and to allow translation of said first member relative to said second member in a direction not parallel to said first torque axis; and second coupling means adapted to (i) prevent
translation of said first member relative to said second member in a direction not parallel to said first torque axis when a load applied to the first ground engaging means is insufficient to cause failure of said second coupling means; and (ii) allow translation of said first member relative to said second member in a direction not parallel to said first torque axis when the load applied to the first ground
engaging means is sufficient to cause failure of said second coupling means.
2. An assembly according to claim 1, wherein the first coupling means comprises a third member adapted to (i) engage the first member to prevent rotation of said third member relative to said first member and allow translation of said third member relative to said first member along a first direction; and (ii) engage the second member and prevent rotation of said third member relative to said second member and allow translation of said third member relative to said second member along a second direction transverse to said first direction.
3. An assembly according to claim 2, wherein the first coupling means further comprises at least one first
protrusion on one of said first and third members, and at least one first slot on the other of said first and third members for engaging at least one respective said first protrusion.
4. An assembly according to claim 2 or 3 , wherein the first coupling means further comprises at least one second protrusion on one of said second and third members, and at least one second slot on the other of said second and third members for engaging at least one respective said second protrusion.
5. An assembly according to any one of the preceding claims, wherein the second coupling means comprises at least one frangible member.
6. An assembly according to claim 5, wherein at least one said frangible member comprises a shear bolt.
7 . An assembly according to claim 5 or 6 , wherein at least one said frangible member engages said first and second members .
8. An assembly according to any one of the preceding claims, wherein the assembly is be adapted to enable said first ground engaging means to separate from the vehicle body.
9. An assembly according to claim 8, further comprising second ground engaging means adapted to engage the ground when said first ground engaging means separates from said vehicle .
10. An assembly according to claim 9, wherein the second ground engaging means comprises at least one skid.
11. An assembly according to any one of the preceding claims, further comprising third coupling means for allowing separation of said first and second members when the load applied to said first ground engaging means causes failure of said second coupling means.
12. An assembly according to claim 11, wherein the third coupling means comprises at least one clamping member.
13. A vehicle comprising: - a vehicle body; first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground; and a mounting assembly according to any one of the
preceding claims for connecting the first ground engaging means to the vehicle body.
14. A vehicle according to claim 13, wherein the first ground engaging means comprises at least one ground engaging roller.
15. A vehicle body for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the vehicle body comprising a plurality of seats for occupants of the vehicle, wherein a plurality of said seats are spaced apart in a direction of travel of the vehicle, and are arranged at decreasing height in the direction of travel of the vehicle.
16. A vehicle body for a vehicle comprising a vehicle body and first ground engaging means, connected to the vehicle body and adapted to apply pressure to the ground, the vehicle body comprising a mounting portion adapted to engage said first ground engaging means, and second ground engaging means adapted to engage the ground when said first ground engaging means is separated from said mounting portion.
17. A vehicle body according to claim 16, wherein the second ground engaging means comprises at least one skid.
18. A mounting assembly for a ground engaging member of a vehicle comprising a vehicle body, a manipulator arm
connected to the vehicle body, and a ground engaging member mounted to the manipulator arm, the assembly comprising:
a support adapted to be mounted to a manipulator arm and comprising support means for supporting a ground engaging member to allow pivoting of the ground engaging member relative to the support; and
locking means for (i) preventing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is insufficient to cause failure of the locking means and (ii) allowing pivoting of the ground engaging member relative to the support when a load applied to the ground engaging member is sufficient to cause failure of the locking means.
19. An assembly according to claim 18, wherein the locking means comprises at least one frangible member.
20. An assembly according to claim 19, wherein at least one said frangible member comprises a shear bolt.
21. An assembly according to any one of claims 18 to 20, wherein the support means comprises at least one first abutment member and at least one second abutment member for engaging the ground engaging member.
22. A vehicle comprising a vehicle body, a manipulator arm connected to the vehicle body, a ground engaging member mounted to the manipulator arm, and a mounting assembly according to any one of claims 18 to 21 for connecting the ground engaging member to the manipulator arm.
PCT/EP2013/071128 2012-10-15 2013-10-10 Mounting assembly for vehicle and vehicle incorporating such assembly WO2014060279A1 (en)

Priority Applications (1)

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EP12188523.0 2012-10-15
EP12188523.0A EP2719991A1 (en) 2012-10-15 2012-10-15 Mounting assembly for vehicle and vehicle incorporating such assembly

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GB2555114B (en) * 2016-10-18 2021-11-24 Pearson Eng Ltd A frame
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DE19625971C1 (en) * 1996-06-28 1997-08-28 Mak System Gmbh Vehicle mounted pressure mine clearance mechanism
US20040035285A1 (en) 2000-07-03 2004-02-26 Renwick Peter John Mine detonating apparatus and vehicle including such apparatus
WO2004052661A1 (en) * 2002-12-11 2004-06-24 Alan Richard Reece Wheel assembly for vehicle
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Also Published As

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GB201505411D0 (en) 2015-05-13
EP2719991A1 (en) 2014-04-16
GB2521564A (en) 2015-06-24

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