JP2003014575A - Traction dolly apparatus with brake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly stop a traction dolly apparatus with a brake after the engagement of a traction wire rope is released in a vehicle collision testing equipment. SOLUTION: Four guide rollers 8 are externally mounted on the upper side flange of a guide rail G and a brake device B is provided to the front end of a skater S allowed to run by drawing the traction wire rope Wa occluded with a clamp device C and the trigger lever 2 attached to the skater S is allowed to collide with a striker not only to release the engagement of the traction wire rope Wa but also to bring a pair of brake pads 27 into pressure contact with the flange part 6a of the guide rail G.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tow dolly device with a brake for towing a test vehicle in a vehicle collision test device.

[0002]

2. Description of the Related Art A vehicle collision test apparatus, as shown in FIG. 12, is a test vehicle T that is run at a predetermined speed by being towed by an endless towing wire rope Wa.
Is a device for making a collision with the collision wall 1 and testing the damage situation or photographing. The test vehicle T is connected to the skater S via a connecting wire rope Wb. A traction wire rope Wa is engaged with the clamp device C that constitutes the skater S. Then, the test vehicle T is pulled straight by the skater S by the towing wire rope Wa being pulled by a driving means such as a winch (not shown). When the test vehicle T reaches a predetermined speed, the trigger lever 2 attached to the skater S
(See FIG. 2) is collided with the striker 3, the connecting wire rope Wb is separated, and only the test vehicle T is allowed to self-propel and collide with the collision wall 1. The towing wire rope Wa
After the wire rope Wb for connection is cut off, the wire rope Wb is separated by colliding with another striker (not shown). In FIG. 12, 4 is a pit.

Here, the skater S from which the towing wire rope Wa has been separated runs coasting as it is and collides with the collision device 5.
It is stopped by colliding with. At this time, the skater S may be damaged at high speed by colliding with the collision device 5. In order to prevent this, the present applicant has applied for a patent for an invention in which a shock absorber is attached to the front part of the skater S and the collision energy is absorbed by the shock absorber to prevent damage to the skater S (special feature). Wish 2000-49467). However, in the present invention, the impact absorber is attached every time a collision test is performed,
Furthermore, since it is necessary to remove the impact absorbing body each time the collision test is completed, it is troublesome and the work efficiency is low.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to promptly stop the tow dolly device after the occlusion of the tow wire rope is released.

[0005]

According to a first aspect of the present invention for solving the above problems, there is provided a skater, which is capped via a plurality of guide rollers at opposite ends of an upper opening of a guide rail. A test device connected to the skater via a connecting wire rope is provided with a clamp device releasably engaged with the towing wire rope by rotating a trigger lever attached to the skater. A traction dolly device for pulling along a rail, wherein at least one of the front and rear ends of the skater has a brake for generating a braking force on the skater after the engagement of the clamp device with respect to the traction wire rope is released. With the device installed and the braking device located within the top opening of the guide rail, the And a pair of brake pads connected to each link plate constituting the link device so that they can approach and separate along the width direction of the upper opening of the guide rail. And an urging means for urging the link device in a direction in which the pair of brake pads are separated from each other, and the pair of brake pads are kept close to each other when the trigger lever is not rotated, and at the time of rotation thereof. And a urging means for releasing the maintenance of the approaching state and pressing the pair of brake pads against the opposite ends of the upper opening of the guide rail to generate a braking force.

A test vehicle is connected to the skater via a connecting wire rope, and a pulling wire rope is engaged with the clamp device constituting the skater in a releasable manner. When the tow wire rope is towed, the skater runs, and along with that, the test vehicle runs straight. Here, a brake device is attached to at least one of the front and rear ends of the skater, and the pair of brake pads constituting the brake device can approach and separate from the guide rail by the biasing means. And
When the skater pulls the test vehicle and travels, the pair of brake pads are held by the urging means while being separated from the guide rails. Immediately before the test vehicle collides, the trigger lever attached to the skater rotates to disconnect the skater from the test vehicle. Further, the engagement between the clamp device of the skater and the wire rope for traction is released, and the urging means is released. Therefore, the biasing means causes the pair of brake pads to approach each other along the width direction of the guide rail and press-contact the guide rail. As a result, the traction wire rope is separated and a braking force is generated in the skater that coasts, and the skater is quickly stopped.
In the present invention, since the skater is stopped by the brake device attached to the skater, the skater is not damaged. Further, unlike the conventional case, it is not necessary to attach or detach the shock absorber each time a collision test is performed, and work efficiency is good.

The invention described in claim 2 is based on the invention described in claim 1, and the trigger lever is configured to be rotated by colliding with a striker attached to the guide rail. It is characterized by being. Therefore, the trigger lever can be reliably rotated.

The invention described in claim 3 is the invention according to claim 1 or 2.
On the premise of the invention described in (1), the urging means is extended from the link device along the longitudinal direction of the skater, and the rod urged in the same direction by the urging means is urged by the stopper member. It is characterized in that it is locked, and the locked state of the rod and the stopper member is released by the rotation of the trigger lever.
That is, the pair of brake pads constituting the brake device can be pressed against the guide rail almost at the same time that the trigger lever is rotated to release the engagement between the skater clamp device and the towing wire rope. Therefore, in the skater, the distance from the disconnection of the tow wire rope to the stop thereof can be minimized.

According to a fourth aspect of the present invention, based on the third aspect of the invention, the stopper member prevents the stopper member from slipping off when the locked state with the rod is released. It is characterized in that a section is provided. Therefore, there is no risk that the stopper member will fall, and there will be no hindrance to the running of the skater.

The invention according to claim 5 is based on the invention according to any one of claims 1 to 4, wherein the pair of brake pads is provided on the upper side of a base plate which constitutes a skater, and the plurality of guide rollers are provided. It is characterized in that it is installed at almost the same height position as. Therefore, the member forming the thrust means can be arranged on the upper surface of the base plate of the skater, and the structure can be simplified.

The invention according to claim 6 is based on the invention according to any one of claims 1 to 5, wherein the link device is a pair of first links rotatably and pin-connected to the skater. A plate, a second link plate that is rotatably pin-connected to the respective tip portions of the pair of first link plates, and a second link plate that is rotatably pin-connected to the tip portions of the pair of second link plates. It is characterized in that it comprises a support block, and the urging means is a tension spring connecting the support block and the skater. Therefore, the structure of the brake device can be simplified.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to embodiments. The same members as those described in the related art will be designated by the same reference numerals to avoid duplication. 1 is an overall front view of a traction dolly device A with a brake according to the present invention, and FIG. 2 is a plan view of the same.
3 is a side view of the same, FIG. 4 is a front sectional view of the same, FIG. 5 is an enlarged sectional view of a portion of the connecting bracket 11, and FIG. 6 is a sectional view taken along line XX of FIG. As shown in FIGS. 1 to 3, a traction dolly device A with a brake according to an embodiment of the present invention includes a skater S capped on a guide rail G and a brake device B mounted on a front end portion thereof. Has been done. First, the guide rail G of this embodiment will be described. As shown in FIG. 3, the guide rail G includes a pair of channel steels 6 which are embedded so as to face each other at predetermined intervals. The upper and lower flanges 6a of each channel steel 6 are provided with openings having a constant widthwise width, and the skater S is capped on the upper opening. An endless towing wire rope W for towing the test vehicle T is provided between the pair of channel steels 6.
a is installed. Here, in FIG. 3, the pulling wire rope Wa on one side is the clamp device C of the skater S.
Shows a portion which is clamped by the skater S to pull and run, and the pulling wire rope Wa on the other side shows a portion which returns to a driving means such as a winch (not shown).

Next, the skater S will be described. Figure 1
Further, as shown in FIG. 2, four guide rollers 8 are rotatably attached to the upper surface of the base plate 7 which constitutes the skater S of this embodiment. These guide rollers 8 are attached to both ends of the base plate 7 in the longitudinal direction (front and rear direction of the skater S) and also to both ends of the width direction in a zigzag manner while slightly projecting from the base plate 7. ing. By fitting these guide rollers 8 into the flange portions 6a of the respective channel steels 6, the skater S is capped on the guide rail G. In FIG. 1, 9 is a cover plate for covering the portion of each guide roller 8.

As shown in FIGS. 1 and 2, a pair of connecting brackets 11 for hooking a connecting wire rope Wb for connecting the test vehicle T is provided behind the center of the skater S in the front-rear direction. Are fixed in parallel along the longitudinal direction of the skater S. Each of the connecting brackets 11 has a substantially U-shape when viewed from the front, and the connecting wire rope Wb is provided in their opening portions 11a.
Is housed. An impeller 12 is provided between the pair of connecting brackets 11 in order to prevent the connecting wire rope Wb from coming off. , Rotatably mounted. As shown in FIG. 4, when the skater S is towing the test vehicle T, any one of the blade bodies abuts on the locking lever portion 2a (see FIG. 2) of the trigger lever 2 and engages. It has been stopped. At this time, the impeller 12 cannot rotate. Moreover, the locking lever portion 2a
Since the blade body that is adjacent to the blade body that is locked at the position closes the inlet portion of the opening portion 11a of the connection bracket 11,
The connecting wire rope Wb does not slip out of the opening 11a. As shown in FIG. 5, when the trigger lever 2 is rotated and the locking state of the locking lever portion 2a and the blade body is released, the impeller 12 becomes rotatable, so that the connecting wire rope is connected. Wb a pair of connecting brackets 1
It can be detached from the first opening portion 11a. The connecting wire rope Wb separated from the pair of connecting brackets 11 is indicated by a chain double-dashed line. At this time, the front portion 11b of the connecting bracket 11 is inclined upward so that the connecting wire rope Wb does not interfere with other members. In FIG. 5, 13 is a support shaft for rotatably supporting the impeller 12, and 14 is an escape hole provided in the base plate 7 to avoid interference with the impeller 12.

As shown in FIGS. 2 and 3, the trigger lever 2 is mounted in front of the pair of connecting brackets 11 so as to be rotatable in a horizontal plane. The four lever portions 2a to 2d are radially projected in multiple stages from the center of rotation of the trigger lever 2 in plan view. That is, one of the blades of the impeller 12 is brought into contact with the upper portion of the base plate 7 of the trigger lever 2 to lock the impeller 12 in a non-rotatable manner. And striker 3 and trigger lever 2
A collision lever portion 2b protruding laterally from the base plate 7 for rotating the entire body, and a brake release lever portion 2c for releasing a tensioned state of a tension rod 15 (which will be described later) constituting the brake device B are provided. It is provided. Similarly, at the lower part of the base plate 7, a pair of occlusal bodies 16a, 16b constituting the clamp device C are brought closer to and separated from each other to clamp the pulling wire rope Wa and to release the clamped state. 2d is provided. Therefore, when the collision lever portion 2b collides with the striker 3 and the entire trigger lever 2 is rotated, the other lever portions (locking lever portion 2a, brake release lever portion 2c,
The cam lever portion 2d) is also rotated at the same time.

Next, the clamp device C will be described.
As shown in FIGS. 6 and 7, a clamp device C for clamping the traction wire rope Wa and integrally connecting the skater S and the traction wire rope Wa is provided below the base plate 7. It is arranged. The clamp device C is opposed to the first occlusion body 16a fixed to the base plate 7 by two fixing bolts 17 and the first occlusion body 16a, and is further rotated by a fulcrum pin 18 in a vertical plane. It is composed of a second occlusion body 16b which is movably attached. The pulling wire rope Wa arranged between the first and second bite bodies 16a and 16b is pressed by the cam lever portion 2d of the trigger lever 2 at the back surface of the second bite body 16b. 16b is firmly sandwiched by approaching the first occlusion body 16a. In this way, the towing wire rope Wa is provided with the first and second occlusion bodies 16 respectively.
Clamped by a, 16b. Then, as shown in FIG. 8, when the collision lever portion 2b of the trigger lever 2 collides with the striker 3 and is rotated, the cam lever portion 2d is also rotated at the same time, and the second occlusion body 16b becomes the first occlusion. Body 16
It is separated from a. In this way, the towing wire rope Wa separates from the clamp device C and is dropped.

Next, the brake device B will be described.
As shown in FIG. 9, a brake device B is attached to the front end of the skater S. That is, the support bracket 19 fixed to the front end of the base plate 7 that constitutes the skater S
Rear ends of the pair of first link plates 21 are attached to the upper surface and the lower surface of the rotatably rotatably in the horizontal plane by the fulcrum pins 22. Rear ends of a pair of second link plates 23 are attached to the upper ends of the respective first link plates 21 on their upper surfaces so as to be rotatable in the horizontal plane by respective fulcrum pins 24. The tip end of each second link plate 23 is attached to the support block 26 by a fulcrum pin 25 so as to be rotatable in a horizontal plane. Thus, the first and second link plates 21 and 23, and the fulcrum pins 2
2, 24, 25, pantograph-shaped link device L
And each of the first and second link plates 2 is formed.
1 and 23 can approach and separate from each other along the width direction of the guide rail G. Brake pads 27 are attached to the connecting portions of the first and second link plates 21 and 23, respectively. A pair of brake pads 27
Are arranged so as to face the upper flange portion 6a of the channel steel 6. Then, in the pair of brake pads 27, a substantially V-shaped pressure contact groove portion 27a corresponding to the flange portion 6a is formed in a portion facing the flange portion 6a (see FIG. 3).

As shown in FIGS. 6 and 9, on the rear surface of the support block 26, a projecting rod 15 extends rearward. This thrust rod 15
Are inserted into the respective insertion holes 28a of the two guide blocks 28 that are provided upright on the upper surface of the base plate 7 at a predetermined interval. And, the rear end portion of the thrust rod 15 is
It projects from the rear guide block 28. Also,
Between the support bracket 19 and the support block 26, tension springs 29 are mounted above and below them. Therefore, the pair of brake pads 27 are always biased in the direction in which they are separated from each other along the width direction of the guide rail G.

On the upper surface of the base plate 7 behind the rear guide block 28, a pair of supporting members 31 are arranged at an interval wider than the outer diameter of the projecting rod 15 (in other words, projecting rod 15). 15 intervals that can pass 15)
Is installed upright. Each of the support members 31 is provided with a through hole 31a along a direction (width direction of the guide rail G) orthogonal to the longitudinal direction of the projecting rod 15, and the stopper member 32 is inserted into the through hole 31a. Has been done. At the tip of the stopper member 32, the locking plate 3 that is locked with the brake release lever portion 2c of the trigger lever 2 is provided.
3 is attached to the stopper member 32, and a rod passage groove portion 32a for passing the projecting rod 15 is provided at the rear portion of the stopper member 32. Projection piece 32 for retaining
b is provided. The stopper member 32 is slidably mounted in a guide groove 34 formed on the upper surface of the base plate 7 along the width direction of the guide rail G.

As shown in FIGS. 3 and 9, when the skater S is connecting the test vehicle T, the gap between the pair of support members 31 is closed by the stopper member 32. Therefore, the urging rod 15 is in a stationary state while being urged against the elastic restoring force of each tension spring 29, and the pair of brake pads 27 includes the channel steel 6 forming the guide rail G. Is arranged at a position slightly away from the upper flange portion 6a. When the trigger lever 2 is rotated, the brake release lever portion 2c is also integrally rotated. Accordingly, the stopper member 32 is slid along the width direction of the guide rail G, and the rod passage groove portion 32a of the stopper member 32 is inserted into the gap between the pair of support members 31.
Are placed. Then, as shown in FIG. 11, the pair of support members 3 closed by the stopper member 32.
The clearance 1 is opened, and the elastic restoring force of each tension spring 29 pushes down the tension rod 15. As a result,
The pair of brake pads 27 are separated from each other along the width direction of the guide rail G, and the upper flange portion 6a of the channel steel 6 is provided.
Is pressed against. By doing so, the braking force acts on the skater S. In FIG. 9, 35 is a stopper pin for preventing the trigger lever 2 from rotating excessively.

The operation of the tow dolly device A with a brake according to the present invention will be described. As shown in FIG. 10, the skater S is capped at the traveling start position on the guide rail G, the pulling wire rope Wa is clamped to the clamp device C of the skater S, and the connecting wire rope Wb is used. The skater S and the test vehicle T are connected together. At this time, the pair of brake pads 27 constituting the brake device B are separated from the upper flange portion 6a of the guide rail G because the projecting rods 15 are locked by the stopper member 32 (Fig. 3). That is, the braking force does not act on the skater S. The traction wire rope Wa is pulled by a driving means such as a winch (not shown), and the skater S
Run. The test vehicle T is pulled by the skater S and travels straight on the guide rail G.

When the skater S travels to a predetermined position, the collision lever portion 2b of the trigger lever 2 attached to the skater S collides with the striker 3 attached to the upper surface of the guide rail G, and the trigger lever 2 Is rotated. At the same time, the locking lever portion 2a and the cam lever portion 2d are also rotated. Then, as shown in FIG. 5, the impeller 12 is rotatable, the opening portion 11 a of the connecting bracket 11 is opened, and the connecting wire rope Wb is separated from the connecting bracket 11. Therefore, the test vehicle T
Is self-propelled and collides with the collision wall 1. Then, as shown in FIGS. 7 and 8, since the second occlusal body 16b is separated from the first occlusal body 16a, the pulling wire rope W
a falls. As a result, the skater S coasts.

Simultaneously with the rotation of the trigger lever 2, the tensioned state of the tension rod 15 constituting the brake device B is released, and the pair of brake pads 27 are mutually reciprocated by the elastic restoring force of each tension spring 29. The flange portion 6a on the upper side of the guide rail G is pressed into contact with the space. Therefore, the braking force acts on the skater S, and the skater S is quickly stopped.

In the traction dolly device A with a brake of this embodiment, the pair of brake pads 27 and the four guide rollers 8 constituting the brake device B are located at substantially the same height, and the base plate of the skater S is used. It is attached to the upper side of 7. Therefore, all the members for locking the projecting rod 15 extending from the support block 26 can be disposed on the upper surface of the base plate 7, and the structure can be simplified. There is. However, the pair of brake pads 27 and the four guide rollers 8 are
It may be arranged below the base plate 7.

Further, in the tow dolly device A with a brake of this embodiment, the brake device B is mounted on the front side of the skater S. However, the brake device B may be mounted on the rear side of the skater S. Further, the brake device B may be attached to both the front side and the rear side of the skater S.

[0026]

The traction dolly device with a brake according to the present invention is a tractor wire rope for pulling a skater which is mounted on a guide rail via a plurality of guide rollers and a trigger lever mounted on the skater. A tow dolly device for pulling and running a test vehicle connected via a connecting wire rope, the clamp device being releasably engaged with respect to It is characterized in that the skater is equipped with a brake device for generating a braking force later. Therefore, the braking force can be applied to the skater immediately after the trigger lever is rotated and the traction force of the towing wire rope does not act on the skater. As a result, the skater is stopped immediately without damaging it.

[Brief description of drawings]

FIG. 1 is a tow dolly device A with a brake according to the present invention.
FIG.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a front sectional view of the same.

FIG. 5 is an enlarged cross-sectional view of a portion of a connecting bracket 11.

6 is a sectional view taken along line XX of FIG.

FIG. 7 is a diagram showing a state in which the clamp device C clamps the tow wire rope Wa.

FIG. 8 is a pair of occlusal bodies 16a constituting the clamp device C,
FIG. 16 is a view showing a state in which 16b is separated and the tow wire rope Wa has dropped.

9 is a plan view of a brake device B. FIG.

FIG. 10 is an operation explanatory diagram of a state in which the tow dolly device with a brake A pulls the test vehicle T to travel.

11 is an operation explanatory view of a state in which a pair of brake pads 27 presses the flange portion 6a of the guide rail G. FIG.

FIG. 12 is a schematic front view of a vehicle collision test device.

[Explanation of symbols]

A: Tow dolly device with brake B: Brake device C: Clamp device G: Guide rail L: Link device S: Skater T: Test vehicle Wa: Wire rope for towing Wb: Wire rope for connection 2: Trigger lever 3: striker 6a: Flange (opposing end) 7: Base plate 8: Guide roller 15: Stretching rod (rod) 21: First link plate 22, 24, 25: Support pin (pin) 23: Second link plate 26: Support block 27: Brake pad 29: Tension spring (biasing means) 32: Stopper member 32b: Retaining protrusion (retaining portion)

Claims (6)

[Claims] 1. A guide rail is provided at an opposite end of an upper opening of the guide rail,
The wire rope for connection is provided with a skater that is capped through a plurality of guide rollers, and a clamp device that is releasably engaged with the wire rope for traction by the rotation of a trigger lever attached to the skater. A traction dolly device for towing a test vehicle connected to the skater along the guide rails via at least one of the front and rear ends of the skater, and the occlusal release of the clamp device with respect to the towing wire rope. After that, a brake device for generating a braking force is attached to the skater, and the brake device is a pantograph connected to at least one of the front and rear of the skater in a state where the brake device is arranged in an upper surface opening of the guide rail. -Like link device and the guide rail can be approached and separated along the width direction of the upper opening of the guide rail. A pair of brake pads connected to each link plate of the link device, a biasing means for biasing the link device in a direction in which the pair of brake pads are separated from each other, and a non-rotation of the trigger lever. Sometimes, while maintaining the approaching state of the pair of brake pads, at the time of rotation thereof, the maintaining of the approaching state is released, and the pair of brake pads are pressed against the opposite ends of the upper opening of the guide rail. A tow dolly device with a brake, comprising: a tension means for generating a braking force. 2. The traction dolly device with a brake according to claim 1, wherein the trigger lever is configured to be rotated by colliding with a striker attached to the guide rail. 3. The projecting means extends from the link device along the longitudinal direction of the skater, and the rod biased in the same direction by the biasing means is locked by the stopper member in the projecting state. The traction dolly device with a brake according to claim 1 or 2, wherein the locked state of the rod and the stopper member is released by the rotation of the trigger lever. 4. The brake according to claim 3, wherein the stopper member is provided with a retaining portion for preventing the stopper member from falling off when the locked state with the rod is released. Traction dolly device. 5. The pair of brake pads are mounted on the upper side of a base plate that constitutes a skater at substantially the same height as the plurality of guide rollers. A tow dolly device with a brake according to any of the above. 6. The link device is rotatably pin-connected to a pair of first link plates rotatably and pin-connected to the skater and to respective tip portions of the pair of first link plates. A second link plate and a support block that connects the tip ends of the pair of second link plates to each other by pins so as to be rotatable, and the biasing means is a tension spring that connects the support block and the skater. The traction dolly device with a brake according to any one of claims 1 to 5, wherein: