Vehicle retaining device and vehicle collision test device

Abstract

To provide a vehicle holding device and a vehicle collision test device that can perform more accurate collision tests by causing a test vehicle mounted on a carriage to collide with a collision body so as to obtain normal collision deformation.SOLUTION: In a vehicle collision test in which a carriage 13 on which a test vehicle 11 is placed is driven toward a collision body 15 so that the test vehicle 11 collides with the collision body 15, a vehicle retaining device 100 is installed on the carriage 13 to retain the test vehicle 11, and includes retaining parts 101 that are fixed on the carriage 13 and retain the test vehicle 11 and restricts the relative movement of the carriage 13 toward the rear of a traveling direction A, and a release part 105 that releases retention of the test vehicle 11 by the retaining parts 101 before the test vehicle 11 collides with the collision body 15.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vehicle support device and a vehicle crash test device. [Background technology]

[0002] A crash test device using a horizontal traction type drop weight system is known, in which a vehicle connected to a wire rope is pulled using the falling motion of a large drop weight as a power source, and crashed into a collision body to perform a crash test on the vehicle (Patent Document 1). In this crash test device, a weight installed inside the large drop weight is connected to a cart for the crash test via a wire rope, and when the weight is allowed to fall freely, the cart is pulled in by the wire rope, the direction of which is changed by a pulley. This causes the test vehicle to crash into the collision body located midway between the cart and the large drop weight. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-114384 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned crash test device, for example, in the case of a side collision test, the test vehicle is placed on a dolly with the side of the vehicle facing the collision body, and the dolly is towed together with the test vehicle by a wire rope, and the side of the test vehicle is collided with the collision body. However, when the dolly starts to move due to the drop of the weight, an inertial force is generated in the dolly and the test vehicle due to the reaction of the dolly being towed. If the test vehicle is displaced on the dolly due to this inertial force, an accurate crash test cannot be performed. Therefore, if the test vehicle is fixed on the dolly, the positional displacement of the test vehicle relative to the dolly can be suppressed, but in that case, the test vehicle remains fixed to the dolly even during the collision, and normal collision deformation of the test vehicle cannot be obtained. In this way, when the falling motion of a large falling weight is used as a power source, it is difficult to perform an accurate crash test, not limited to the above-mentioned side collision.

[0005] Therefore, an object of the present invention is to provide a vehicle support device and a vehicle collision test apparatus that enable more accurate collision tests to be carried out by colliding a test vehicle mounted on a bogie with a collision body so as to obtain normal collision deformation. [Means for solving the problem]

[0006] The present invention comprises the following configurations. (1) In a vehicle collision test in which a dolly on which a test vehicle is placed is driven toward a collision body and the test vehicle is caused to collide with the collision body, a vehicle holding device is installed on the dolly and holds the test vehicle, a holding portion fixed on the bogie and holding the test vehicle to restrict a relative movement of the bogie toward the rear in a traveling direction; a release unit that releases the holding unit from the holding of the test vehicle before the test vehicle hits the collision body; A vehicle holding device comprising: (2) A bogie equipped with the vehicle support device described in (1), A traction device that tows and travels the cart by the gravity of a falling weight; a collision body that is disposed on a front side of the bogie in a traveling direction and with which the test vehicle on the bogie is collided; A vehicle crash test apparatus comprising: Effect of the Invention

[0007] According to the present invention, a test vehicle mounted on a carriage is collided with a collision body so as to obtain normal collision deformation, thereby enabling a more accurate collision test to be carried out. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of a vehicle crash test device according to an embodiment. [Diagram 2] FIG. 2 is a plan view showing a part of a vehicle crash test apparatus including a dolly on which a vehicle support device is provided. [Diagram 3]3 is a cross-sectional view of the bogie taken along line III-III in FIG. 2. FIG. [Figure 4] FIG. 4 is a side view of a bogie provided with a vehicle support device. [Diagram 5] FIG. 5 is a schematic side view of the engaging / disengaging mechanism constituting the holding portion before the arm is rotated. [Figure 6] FIG. 6 is a schematic side view of the engaging / disengaging mechanism constituting the holding portion after the arm has been rotated. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. (Vehicle crash test equipment) 1 is a schematic diagram of a vehicle crash test apparatus 200 according to an embodiment. The vehicle crash test apparatus 200 includes a vehicle holding device 100, and is an apparatus for carrying out a crash test such as a crash evaluation test of a test vehicle 11.

[0010] In general, vehicles are required to have a function for protecting the lives of occupants and surrounding pedestrians, and a function for suppressing functional damage in case of collision with other vehicles, obstacles, etc. For this reason, various developments such as structures for absorbing vehicle collision energy are continuously carried out. In order to develop such vehicles, vehicle collision tests are performed using a vehicle collision test device 200. In the collision test, a test vehicle 11 is accelerated to a specified speed and collided with a collision body 15, and damage data, etc. of the test vehicle 11 and a simulated occupant (dummy doll, not shown) during and after the collision are collected.

[0011] The vehicle collision test apparatus 200 of this configuration is an apparatus of the dropping weight horizontal traction type, in which a dropping weight 31 is dropped to horizontally pull a cart 13 on which a test vehicle 11 is placed, and the test vehicle 11 is collided with a collision body 15.

[0012] The test vehicle 11 is a commercially available vehicle or a simulated vehicle (a vehicle simulating a commercially available vehicle), etc., and is a test body to be collided with the collision body 15. The test vehicle 11 is, for example, a machine such as an automobile having wheels, and may be, for example, a passenger car (a regular car, a light car, etc.), a freight vehicle such as a truck or a trailer, a passenger transport vehicle such as a bus, or even a motorcycle or a railroad car.

[0013] The vehicle crash test device 200 includes a cart 13, a crash body 15, crash body peripheral equipment 17, a drop weight unit 21, and a towing rope 23.

[0014] The collision body 15 is an object to be collided with by the test vehicle 11, and includes, for example, a concrete barrier 15a and a collision test body 15b. The concrete barrier 15a is a wall made of concrete or the like fixed to the ground G. The collision test body 15b includes at least one of collision attachments corresponding to various collision test standards, for example, an attachment for oblique collision, an attachment for offset collision, an attachment for pole collision, and the like. The collision test body 15b may be, for example, a vehicle other than the test vehicle 11, a pole, a guardrail, or the like. Also, a configuration may be adopted in which the collision test body 15b is not provided.

[0015] The collision object peripheral equipment 17 is equipment arranged around the collision object 15. The collision object peripheral equipment 17 includes, for example, a high-speed camera 17a and a lighting device 17b. The high-speed camera 17a is a device that captures an image of the collision between the test vehicle 11 and the collision object 15. The lighting device 17b is a device that irradiates illumination light onto the test vehicle 11 and the collision object 15 that are the subjects of the high-speed camera 17a.

[0016] The drop weight section 21 is a mechanism for dropping the drop weight 31, and includes the drop weight 31, a drop weight tower 33, a shock absorber 35, a drop height control device 37, a lower pulley 39, and a movable pulley device 41.

[0017] The drop tower 33 is a tower for dropping the suspended drop weight 31, and includes a plurality of pillars 33a erected on the ground G and a hanging portion 33b suspended across the upper ends of the pillars 33a.

[0018] The drop weight 31 is a weight (weight) that is dropped to tow the test vehicle 11. The drop weight 31 is suspended from a suspension part 33b of the drop weight tower 33 via a movable pulley device 41.

[0019] The shock absorber 35 is a device that receives the falling weight 31. The shock absorber 35 is a device that absorbs the impact caused by the fall of the weight 31. The shock absorber 35 is disposed directly below the weight 31.

[0020] The drop height control device 37 is a device that adjusts and changes the drop height H of the drop weight 31. The drop height H of the drop weight 31 is the distance from the height at which the drop of the drop weight 31 starts to the height at which the drop of the drop weight 31 ends and contacts the buffer device 35. The drop height control device 37 adjusts the drop height H of the drop weight 31 to set the towing speed of the dolly 13, which is determined according to the drop height H, and controls the collision speed of the test vehicle 11 on the dolly 13. The collision speed of the test vehicle 11 is the speed of the test vehicle 11 when the test vehicle 11 collides with the collision body 15. The drop height control device 37 is disposed between the hanging part 33b and the drop weight 31.

[0021] The drop height control device 37 includes a winch 51, a hanging rope 53, and a weight release device 55. The winch 51 is suspended from the hanging part 33b, and the hanging rope 53 is wound and unwound by the winch 51. The hanging rope 53 has the weight 31 connected to its lower end via the weight release device 55. As a result, the weight 31 moves in the vertical direction as the hanging rope 53 is wound and unwound by the winch 51. With the above configuration, the drop height H of the weight 31 is adjusted so that a desired impact speed (the impact speed of the test vehicle 11) is obtained.

[0022] The weight release device 55 is a device that connects the suspension rope 53 and the weight 31 and also separates the connection between the suspension rope 53 and the weight 31. The position of the weight 31 at the moment when the weight release device 55 separates the connection between the suspension rope 53 and the weight 31 becomes the starting point of the fall of the weight 31.

[0023] The traction rope 23 extending toward the movable pulley device 41 is hung on the lower pulley 39. The lower pulley 39 changes the extending direction of the traction rope 23 from the horizontal direction to the vertical direction. The lower pulley 39 is disposed closer to the drop tower 33 than the impact body 15.

[0024] The movable pulley device 41 is a pulley device that connects the suspended part 33b and the drop weight 31, and is provided between the suspended part 33b and the drop weight 31. The movable pulley device 41 makes the towing distance of the test vehicle 11 longer than the falling distance of the drop weight 31. In addition, the movable pulley device 41 makes the towing speed of the test vehicle 11 faster than the falling speed of the drop weight 31. The movable pulley device 41 includes fixed pulleys 61, 63, 65 and movable pulleys 67, 69.

[0025] The fixed pulleys 61, 63, and 65 are provided in the suspended portion 33b. The fixed pulley 61 is disposed above the lower pulley 39. The movable pulleys 67 and 69 are each provided above the drop weight 31, and are disposed at positions spaced apart from each other in the horizontal direction.

[0026] One end of the traction rope 23 is fixed to the cart 13, and the other end is fixed to the hanging part 33b. For example, a wire rope with multiple strands twisted together can be used as the traction rope 23. The traction rope 23 transmits the falling motion of the drop weight 31 relative to the hanging part 33b to the cart 13, and pulls the cart 13 in the horizontal direction. The traction rope 23 in this configuration is suspended from the cart 13 side in order, the lower pulley 39, the fixed pulley 61, the movable pulley 67, the fixed pulleys 63 and 65, and the movable pulley 69.

[0027] (Vehicle support device) Fig. 2 is a plan view showing a part of a vehicle crash test device 200 including a bogie 13 provided with a vehicle support device 100. Fig. 3 is a cross-sectional view of the bogie 13 taken along line III-III in Fig. 2. Fig. 4 is a side view of the bogie 13 provided with the vehicle support device 100.

[0028] 2 to 4, the cart 13 is flat, and the upper surface of the cart 13 serves as a mounting surface 71 for the test vehicle 11. The vehicle holding device 100 is provided on the mounting surface 71 of the cart 13, and holds the test vehicle placed on the mounting surface 71.

[0029] A plurality of wheels 73 are attached to the underside of the dolly 13. These wheels 73 roll on a pair of rails 75 laid on the ground G, enabling the dolly 13 to travel. In other words, the dolly 13 can travel in a traveling direction A along the rails 75 shown in FIG. 4 until it collides with the collision body 15. Note that a plurality of dampers 77 are provided on the concrete barrier 15a of the collision body 15, and the traveling dolly 13 is received by the dampers 77.

[0030] When conducting a side impact test on the test vehicle 11, as shown in Fig. 2, the test vehicle 11 is placed on the dolly 13 with the vehicle's front-rear direction oriented approximately perpendicular to the traveling direction A of the dolly 13. It is preferable to lay a low-friction sheet (not shown) on the mounting surface 71 of the dolly 13 to reduce friction with the test vehicle 11.

[0031] The vehicle holding device 100 has two holding parts 101 and one release part 105. The holding part 101 has an engagement / disengagement mechanism 110 that detachably engages a belt 113, which is a cord-like body having one end fixed to the test vehicle 11. The belt 113 is fixed to the chassis at the front and rear of the test vehicle 11, respectively. In this way, the test vehicle 11 and the engagement / disengagement mechanism 110 are connected by the belt 113.

[0032] For example, a lashing belt can be used as the belt 113. It is preferable that the belt 113 has a ratchet 115 in the middle thereof, and the length of the belt 113 can be adjusted by operating the ratchet 115. Note that the cord-like member connecting the test vehicle 11 and the engaging / disengaging mechanism 110 is not limited to the belt 113, and may be any other well-known member such as a chain or a wire.

[0033] The engaging / disengaging mechanism 110 is disposed on the bogie 13 in front of the test vehicle 11 in the traveling direction A toward the collision body 15 (on the right side D1 of the tangent L1 to the test vehicle 11 in FIG. 2). The engaging / disengaging mechanism 110 is disposed on the bogie 13 outboard of the test vehicle 11 in the width direction B perpendicular to the traveling direction A of the bogie 13 (on the opposite vehicle side D2, D3 of the tangent L2, L3 to the test vehicle 11 in FIG. 2). The belt 113 connecting the test vehicle 11 and the engaging / disengaging mechanism 110 can be tensioned by operating the ratchet 115. As a result, the test vehicle 11 placed on the mounting surface 71 of the bogie 13 is held on the mounting surface 71 of the bogie 13 by the belt 113 connected to the engaging / disengaging mechanism 110 constituting the holding portion 101, and the relative movement of the bogie 13 backward in the traveling direction A is restricted.

[0034] 5 and 6 are schematic side views of the engaging / disengaging mechanism 110 constituting the holding unit 101. As shown in FIG. 5, the engaging / disengaging mechanism 110 has a fixed base 121 fixed to the dolly 13, and an arm 125 supported on the fixed base 121 so as to be rotatable about a rotation shaft 123. An end of the arm 125 has a locking portion 127, and a carabiner 114 provided at an end of the belt 113 can be locked to the locking portion 127. The engaging / disengaging mechanism 110 has an electromagnetic clutch 129. The electromagnetic clutch 129 fixes the starting position of the counterclockwise rotation of the arm 125 at a specific position where the locking portion 127 is located on the left side in FIG. 5.

[0035] Furthermore, the electromagnetic clutch 129 releases the fixation of the arm 125 by a release current supplied from the release unit 105 (FIG. 2), making the arm 125 rotatable. When the fixation of the arm 125 by the electromagnetic clutch 129 is released, the arm 125 fixed at a specific position rotates in one direction (the direction of the arrow R in FIG. 6) due to its own weight, as shown in FIG. 6. This causes the locking unit 127 to move in the direction of the arrow R, and the belt 113, the end of which is locked to the locking unit 127 of the arm 125, is released.

[0036] 2, the release unit 105 is installed on one end side of the carriage 13, which is the front in the traveling direction A. The release unit 105 is equipped with a position detection sensor 131. As the position detection sensor 131, for example, a photoelectric sensor that irradiates light such as visible light, infrared light, or laser light and receives the reflected light is used.

[0037] In addition, a reflector 133 is disposed on one side of the travel path of the bogie 13 in the vehicle collision test device 200 (see Figs. 2 and 4). When the position detection sensor 131 receives light reflected by the reflector 133 after irradiating light toward the side of the bogie 13 while the bogie 13 is traveling, the release unit 105 supplies a release current to the engagement / disengagement mechanism 110 of each holding unit 101. This releases the fixation of the arm 125 by the electromagnetic clutch 129 of the engagement / disengagement mechanism 110, releases the belt 113, and releases the test vehicle 11 from the bogie 13. The installation position of the reflector 133 is set to a position before the collision object 15 on the travel path of the bogie 13, and this installation position of the reflector 133 is set to a hold release position. As a result, when the bogie 13 reaches the hold release position before the test vehicle 11 collides with the collision body 15 after the bogie 13 starts traveling, the hold of the test vehicle 11 by the holding part 101 is released.

[0038] (Vehicle crash test) In the vehicle collision test device 200 described above, when the connection between the suspending rope 53 and the weight 31 is cut by the weight release device 55 and the weight 31 starts to fall, the falling motion of the weight 31 is transmitted to the cart 13 by the towing rope 23. Then, the cart 13 on which the test vehicle 11 is placed is towed as the weight 31 falls, and travels in the travel direction A toward the collision body 15.

[0039] At this time, the test vehicle 11 placed on the mounting surface 71 of the bogie 13 is held by the vehicle holding device 100. Therefore, when the bogie 13 starts to travel toward the collision body 15, the relative movement of the test vehicle 11 backward in the traveling direction A is restricted, and positional deviation due to inertia of the test vehicle 11 when the bogie 13 starts to travel is suppressed.

[0040] Furthermore, when the cart 13 reaches a hold release position (the installation position of the reflector 133) before the test vehicle 11 collides with the collision body 15, the release unit 105 releases the hold of the test vehicle 11 by the holding unit 101, and then the test vehicle 11 on the cart 13 collides with the collision body 15. Therefore, the hold of the test vehicle 11 by the holding unit 101 is not continued when the test vehicle 11 collides with the collision body 15.

[0041] In this way, by providing the vehicle holding device 100 according to this embodiment, it is possible to collide the test vehicle 11 with the collision body 15 so as to obtain normal collision deformation while suppressing positional deviation of the test vehicle 11 on the traveling bogie 13. In this way, it becomes possible to carry out a more accurate vehicle collision test.

[0042] Furthermore, since the engaging / disengaging mechanism 110 is positioned on the bogie 13 at a position outside the test vehicle 11 in the width direction B of the bogie 13, the engaging / disengaging mechanism 110 does not interfere with the movement of the test vehicle 11 when the test vehicle 11 collides with the collision body 15.

[0043] In the above embodiment, one release unit 105 is used to release the hold of the test vehicle 11 by the two holding units 101, but the configuration may also be provided with two release units 105 that individually release the hold of the test vehicle 11 by the two holding units 101.

[0044] In addition, in the above embodiment, a side impact test in which the side of the test vehicle 11 is collided with the impact body 15 is exemplified, but the present invention is not limited to a side impact test and can be applied to a collision test in which the test vehicle 11 is collided with the impact body 15 in any direction.

[0045] As such, the present invention is not limited to the above-described embodiments, and the present invention also contemplates mutual combinations of the various components of the embodiments, as well as modifications and applications by those skilled in the art based on the descriptions in the specification and well-known technologies, and these are included in the scope of protection sought.

[0046] As described above, the present specification discloses the following: (1) In a vehicle collision test in which a dolly on which a test vehicle is placed is driven toward a collision body and the test vehicle is caused to collide with the collision body, a vehicle holding device is installed on the dolly and holds the test vehicle, a holding portion fixed on the bogie and holding the test vehicle to restrict a relative movement of the bogie toward the rear in a traveling direction; a release unit that releases the holding unit from the holding of the test vehicle before the test vehicle hits the collision body; A vehicle holding device comprising: According to this vehicle holding device, when the bogie starts to move toward the collision body, the relative movement of the test vehicle toward the rear in the traveling direction of the bogie toward the collision body can be restricted, and the positional deviation due to the inertia of the test vehicle when the bogie starts to move can be suppressed. Also, since the holding part releases the holding of the test vehicle before the test vehicle collides with the collision body, it is possible to prevent the test vehicle from being held continuously when the test vehicle collides with the collision body. In other words, it is possible to collide the test vehicle with the collision body so as to obtain normal collision deformation while suppressing the positional deviation of the test vehicle on the traveling bogie, and to perform a more accurate vehicle collision test.

[0047] (2) The holding unit includes an engagement mechanism that engages a rope-like body having one end fixed to the test vehicle to keep it in a tensioned state and releases the tensioned state of the rope-like body in response to a release signal from the release unit, The vehicle support device described in (1), wherein the engagement / disengagement mechanism is positioned on the bogie, forward of the test vehicle in the direction of movement of the test vehicle toward the collision body, and outside the test vehicle in a width direction on the bogie perpendicular to the direction of movement. According to this vehicle retention device, the engaging / disengaging mechanism disposed on the bogie forward in the direction of movement of the test vehicle toward the collision body engages and tenses the rope-like body fixed to the test vehicle, thereby suppressing positional deviation due to inertia of the test vehicle when the bogie starts to move. In addition, the tension state of the rope-like body by the engaging / disengaging mechanism is released and slackened by the release part, so that the retention of the test vehicle is quickly released and it is possible to prevent the test vehicle from continuing to be retained when the test vehicle collides with the collision body. Moreover, since the engaging / disengaging mechanism is disposed on the bogie on the outer side in the width direction than the test vehicle on the bogie, the engaging / disengaging mechanism does not affect the test vehicle when the test vehicle collides with the collision body.

[0048] (3) The engagement / disengagement mechanism includes: an arm supported rotatably about a rotation axis and capable of engaging the cord-like body; an electromagnetic clutch that fixes the arm at a specific position to restrict rotation and releases the arm from the fixed position by a release current from the release unit; A vehicle support device as described in (2). According to this vehicle holding device, the fixing of the arm by the electromagnetic clutch is released by a release current from the release section, which causes the arm to rotate and the cord-like body to be released, and the test vehicle is quickly released from the hold.

[0049] (4) The vehicle holding device described in (3), wherein the release unit supplies a release current to the engagement / disengagement mechanism when the bogie reaches a lock-release position midway along its travel path. According to this vehicle holding device, the cord-like body is released and the holding of the test vehicle can be released before the test vehicle is collided with the collision body.

[0050] (5) A vehicle support device according to any one of (2) to (4), wherein the cord-like body is any one of a length-adjustable belt, a chain, or a wire. With this vehicle holding device, the length of a cord-like body consisting of a belt, chain or wire can be adjusted, and the cord-like body between the engagement / disengagement mechanism and the test vehicle can be tensioned appropriately to securely hold the test vehicle.

[0051] (6) A bogie equipped with a vehicle support device according to any one of (1) to (5); A traction device that tows and travels the cart by the gravity of a falling weight; a collision body that is disposed on a front side of the bogie in a traveling direction and with which the test vehicle on the bogie is collided; A vehicle crash test apparatus comprising: According to this vehicle collision test device, when the bogie towed by the towing device starts to travel toward the collision body, the relative movement of the test vehicle toward the collision body can be restricted in the traveling direction of the bogie toward the collision body, and the positional deviation of the test vehicle due to inertia when the bogie starts to travel can be suppressed. In addition, the test vehicle is released from the holding part before the test vehicle collides with the collision body, so that the test vehicle is prevented from being continuously held when the test vehicle collides with the collision body. In other words, the test vehicle can be collided with the collision body so as to obtain normal collision deformation while suppressing the positional deviation of the test vehicle on the traveling bogie, and a more accurate vehicle collision test can be performed. [Explanation of symbols]

[0052] 11 Test Vehicle 13 Trolley 15 Collider 100 Vehicle holding device 101 Holding part 105 Release section 110 Engagement / disengagement mechanism 113 Belt (cord) 123 Rotation axis 125 Arm 129 Electromagnetic Clutch 200 Vehicle crash test equipment A Travel direction

Claims

1. 1. A vehicle collision test in which a dolly on which a test vehicle is placed is driven toward a collision body and the test vehicle is collided with the collision body, comprising: a vehicle holding device that is installed on the dolly and holds the test vehicle, A holding portion that is fixed on the bogie and holds the test vehicle to restrict a relative movement of the bogie toward the rear in a traveling direction; a release unit that releases the holding unit from the holding of the test vehicle before the test vehicle hits the collision body; A vehicle holding device comprising:

2. the holding unit includes an engagement mechanism that engages a rope-like body having one end fixed to the test vehicle to place it in a tensioned state and releases the tensioned state of the rope-like body in response to a release signal from the release unit; The engaging / disengaging mechanism is disposed on the bogie forward of the test vehicle in a moving direction of the test vehicle toward the collision body, and on the bogie outboard of the test vehicle in a width direction perpendicular to the moving direction.

2. The vehicle support device according to claim 1.

3. The engagement / disengagement mechanism includes: an arm supported rotatably about a rotation axis and capable of engaging the cord-like body; an electromagnetic clutch that fixes the arm at a specific position to restrict rotation and releases the arm from the fixed position by a release current from the release unit; The vehicle support device according to claim 2 .

4. The release unit supplies a release current to the engagement / disengagement mechanism when the carriage reaches a fixed release position midway along a travel path of the carriage.

4. A vehicle support device according to claim 3.

5. The cord-like body is any one of a length-adjustable belt, chain, or wire.

3. A vehicle support device according to claim 2.

6. A bogie equipped with the vehicle support device according to any one of claims 1 to 5; A traction device that tows and travels the cart by the gravity of a falling weight; a collision body that is disposed on a front side of the bogie in a traveling direction and with which the test vehicle on the bogie is collided; A vehicle crash test apparatus comprising:

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