JPS6411124B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention subjects tracked vehicles and wheeled vehicles to steady or irregular vibrations (simulated road surface or actual road surface running conditions), and performs performance tests of traveling suspension systems, turret systems, etc. , relates to a vibration testing device for carrying out durability tests.

When a tracked vehicle is vibrated, it is equipped with tracks, so in the excitation state, the lateral force in the axial direction of the piston rod of the vibrator is generated by the track tension between each vibrator. In order to function, the piston rod portion of the vibrator must be equipped with a device that supports the crawler track and the like and slides in the longitudinal direction of the vehicle (the longitudinal direction of the track).

Additionally, as the vehicle rolls, a force in the lateral direction with respect to the axial direction of the piston rod of the vibrator acts on the vehicle's crawler track contact area.
The above device needs to be configured to slide in the left-right direction of the vehicle.

Furthermore, when the vehicle body tilts from side to side (rolls), the tracks and wheels at the ground contacting portion may tilt from side to side. Particularly in such a case, it is preferable to provide the above-mentioned device of the piston rod portion with a mechanism for tilting the crawler track grounding portion.

Furthermore, when the vehicle is vibrated at a low frequency and large amplitude (similar to when driving on large undulating terrain), the vehicle itself may move in the front-rear and left-right directions. Therefore, a device is required that supports and restrains the movement of the vehicle (vehicle body and wheels) in the longitudinal and lateral directions.

An object of the present invention is to provide a vibration testing device for a tracked vehicle that is equipped with the above-mentioned device and can vibrate a tracked vehicle with tracks attached.

Therefore, in order to achieve this object, the vibration testing device for a tracked vehicle of the present invention is a vibration testing device that excites a tracked vehicle having many wheels equipped with tracks, Alternatively, a vibrator that vibrates the crawler track at a predetermined frequency and amplitude, and a vibrator that is attached to the piston rod portion of the vibrator to support the wheels or the crawler track, and that is slidable in the front-rear direction and left-right direction of the vehicle. The vehicle body support device supports and restrains the movement of the vehicle body of the tracked vehicle in the longitudinal direction and the left and right directions.

The present invention will be explained below with reference to an illustrated embodiment.

The vibration testing device for tracked vehicles shown in FIGS. 1 to 3 includes a plurality of vibrators 4 that vibrate the crawler track 2 directly below the track wheels of a tracked vehicle 1, or each of the track wheels 3, and each vibrator. Machine 4
are provided in the piston rod portions 14 of the rollers 3, respectively.
A crawler support/wheel support device 5 that can vibrate together with the track, and a crawler that removes a part of the crawler belt 2 below the track wheel and attaches it to that part instead of the crawler track 2, giving the same crawler tension as when having the entire crawler track. Tensioning device 6 and tracked vehicle 1
front-rear, left-right, and front-rear vehicle body support devices 7 for supporting the vehicle body portion 1a in the front-rear direction, left-right direction, and front-rear direction;
8, a track fixing device 9 for fixing the track 2, a track support device 10 and a track support mount device 11 for supporting the track 3 in the front-rear direction and left-right direction, and for operating the vibration exciter 4. It is roughly composed of a necessary hydraulic power source 12 and a control device 13 that controls vibration.

The vibration exciters 4 are fixedly installed in a line in an installation recess H provided in the foundation B, and the direction of expansion and contraction of the piston rod portion 14 of each vibration exciter 1 is set in the vertical direction. Each piston rod portion 14 corresponds to the center of rotation of each wheel 3, and the hydraulic power source 12
The frequency and amplitude of the piston rod section 14 can be freely set by the control device 13.

Next, the track support/wheel support device 5 is shown in FIGS. 4 and 5.
As shown in the figure, a support fixture 1 is screwed and fixed to a piston rod portion 14 via a connector 15.
6 and the pin 17 inserted through the connector 15 as a rotation center in a direction perpendicular to the longitudinal direction (arrow X direction) of the vehicle body 1. A slide part receiver 19 is interposed with springs 18, 18 which have the function of returning to the original position when a load is applied, and the slide part receiver 19 is connected by a dovetail groove flat bearing 20, and the rotation direction of the slide part receiver 19 is A front-rear sliding portion 2 that is slidable in the orthogonal direction, that is, the front-rear direction of the vehicle body portion 1a.
1 and the front and rear sliding portions 21 are dovetail groove flat bearings 2.
2, and a left and right slide part 23 as a wheel contact part which is slidable along the left and right direction of the vehicle body part 1a, and a crawler belt tensioning device 6, which is provided on the left and right sides of the left and right slide part 23, and which will be described later. It has a wire rope receiving part 24 for tensioning the crawler belt as a crawler support which holds the wire rope 28 of the wire rope 28 .

The shape of the head of the left and right slide parts 23 has a slight flat part in the center, and both ends of the head of the left and right slide parts 23 are chevron-shaped with crawler relief parts 23a to prevent interference with the crawler belt 2 during vibration. I'm starting to avoid it. Further, as shown in FIG. 6, a large number of rollers (or balls) 25 are disposed on the head of the left and right slide portions 23 so that the crawler belts 2 that come into contact with them slide.

The wire rope receiving part 24 includes two pulley shafts 26, 26 provided on the left and right sides of the left and right slide parts 23 so as to protrude laterally, and the pulley shafts 26, 26.
Pulley 2 attached to 26 so as to be able to slide freely
7 and 27, and can hold a wire rope 28.

Note that center return springs (not shown) are built in between the left and right slide parts 23 and the front and rear slide parts 21 and between the front and rear slide parts 21 and the slide part receiver 19, respectively. In addition, slide part receiver 1
If the inclination of the spring 9 is not required, the spring 18 can be removed and fixed directly to the support fixture 16 by screwing.

Therefore, the above-mentioned track support/wheel support device 5 is designed to prevent direct application of lateral force to the axial direction of the piston rod portion 14 of the vibrator 4 due to track tension during vibration in the longitudinal direction of the vehicle ( The piston rod 14 of the vibration exciter 4 can be slid in the lateral direction (longitudinal direction), and can be slid in the lateral direction of the vehicle so that the lateral force that occurs when the vehicle body 1a is tilted (rolling) from side to side is not directly applied to the axial direction of the piston rod portion 14 of the vibration exciter 4. In addition, it is also possible to tilt left and right according to the tilt of the crawler tracks and wheels that occur when the vehicle tilts left and right (during rolling). Next, the crawler belt tensioning device 6 is operated as shown in FIG.
As shown in FIGS. 4, 5, 7, and 8, a part of the crawler track 2 is removed and two left and right wire ropes 28, 28 are tensioned between both ends of the track 2 instead. It is something that That is, the crawler belts below the first and last wheels 3 are left in place, the crawler belts under the intermediate wheels 3 are replaced, and a tension equivalent to that of the crawler belts is applied to create the same condition as if the crawler belts were used. Specifically, as shown in FIGS. 7 and 8, this crawler belt tensioning device 6 connects a connector 30 with an auxiliary crawler pin 29, and the other end of this connector 30 connects a yoke 31 with a wire rope to a connector pin. 32, and wire ropes 28, 28 are attached to both sides of the crawler belt 2 to provide crawler tension, so that it can be vibrated as if it had a crawler belt.

Note that the partial crawler belt 2 (the crawler belt that is in contact with the ground) below each wheel 3 can be removed and the crawler belt tensioning device 6 can be attached.

Next, the front and rear vehicle body support devices 7 will be explained.

The front and rear vehicle body support device 7 includes a ball sleeve 34 and a self-aligning bearing 35 attached to a support column 33 as shown in FIGS. 9 and 10.
4, insert the guide 36 in the front and rear direction of the vehicle or
It is designed to be able to slide left and right.
The guide 36 has a spring and a shock absorber (dash pot) 37 to reduce the impact caused by the movement of the vehicle.

The guide 36 can freely rotate via a self-aligning bearing 35, and a guide pulley 38 is attached to the guide 36, so that the guide 36 rotates in the vertical direction as the vehicle mounting portion moves in the vertical direction due to pitching of the vehicle. The guide pulley 38 is movable. Further, the guide pulley 38 is connected to the yoke 39 with a pin 40, and the guide roller 41 is attached with a pin 42. Furthermore, yoke 39
The yoke 44 with wire rope is attached to the link 43.
are connected via pins 45 and 46, and the wires 4 of the yoke 44 with each wire rope
The other end of 7 is pin-coupled to the hook F of the vehicle body portion 1a.

Further, the guide pulley 38 is supported by a pair of upper and lower balance springs 48, 48, so that it can freely move in the vertical direction. Further, the guide pulley 38 is designed to be able to slide in the longitudinal direction of the vehicle, and when the spring 37 is completely compressed, the vehicle is completely restrained in the longitudinal direction.

Incidentally, the distance between the vehicle body portion 1a and the front and rear vehicle body support devices 7, 7 can be adjusted to some extent using an adjustment nut 49. Then, the pulley guide portion 36a of the guide 36
has a certain curvature similar to the amount of change in the longitudinal direction of the vehicle due to body pitching, and is designed not to apply excessive restraint force to the vehicle body.

The front and rear vehicle body support devices 7 are installed not only in the front and rear directions of the vehicle body but also two on each side of the tracked vehicle 1 to support and restrain movement of the vehicle body in the left and right direction.
Next, the front and rear vehicle body support devices 8, 8 as another method of supporting the vehicle body in the longitudinal direction are shown in FIGS. 11 and 12.
This will be explained with reference to the drawings and FIGS. 1 and 2.

Using the threaded part of the stopper bracket 50,
A support 51 fixed to the vehicle body part 1a with a bolt,
While the guide member 52 is assembled, the yoke part 54 of the yoke-equipped wire rope 53 is pin-coupled with a pin, washer, or nut. wire rope 53
The other end is coupled to and supported by the vehicle body support device 7.

An elongated hole 52a is formed in the guide member 52 so that movement in the longitudinal direction of the vehicle body is not restricted within a certain range, and when the amount of movement exceeds the range of the elongated hole 52a, the front and rear vehicle body support device 7 springs and shock absorber 37
acts, and is finally restrained by a stopper 54a.

Incidentally, the vicinity of the induction wheel and the starting wheel are fixed to the fixed part B with a wire rope 55, as shown in FIG.

Next, the crawler belt fixing device 9 will be explained.

This crawler belt fixing device 9, as shown in FIG.
In the case of one-sided hexapod excitation, the crawler track 2 attached to the hexapod on the other side is fixed to the ground foundation G. In detail, as shown in FIGS. 13 to 21, fixing devices 57 are attached and fixed to anchors 58 with bolts and washers to end connectors 56 at several locations on the left and right sides of the crawler track 2, and
The anchor 58 is attached to the ground foundation G.

Further, a crawler belt fixing device 59 is attached to the end connector 56 of the crawler belt 2 and stretched with a wire rope 60. The other end of the wire rope 60 is fixed to the ground foundation G, and has a structure for fixing the crawler belt 2 in the front-rear direction.

That is, the end connector fixture 61 is attached to the end connector 56, and the end connector fixture plate 62 is fixed to the end connector fixture 61 with bolts. Furthermore, the wire rope 60 with yoke is attached to the end connector fixture plate 61 via the pin 63, and the anchor portion 6 is attached via the chain block 64.
5, and tension and fix the crawler belt 2.

Next, in order to limit the movement of the vehicle body back and forth and left and right that occurs when the vehicle body part 1a is pitching or rolling significantly at a low frequency, a wheel support device 10 that supports the wheels 3 that do not vibrate and a wheel support device 10 that supports the wheels 3 that do not vibrate and The wheel support frame device 11 will be explained with reference to FIGS. 22 to 28.

First, the wheel support device 10 will be explained. Second
FIG. 2 shows an example in which the first, second, and sixth left and right wheels of the wheel 3 are vibrated to support the third, fourth, and fifth left and right wheels of the wheel 3. Details of the wheel support device 10 are shown in FIGS. 23 and 24.

When the crawler tracks 2 and wheels 3 are vibrated, the crawler track support portion 66 of the track support device 10 that is not subjected to vibration is bolted to a support frame 67, and this support frame is attached to the ground. anchor bolt 68
Fixed by

At the crawler contact portion of the crawler track and wheel support portion 66, the vehicle portion 1
It has a structure that has a front-rear slide part 69 and a left-right slide part 70 that can slide in the front-rear direction and left-right direction of a, and the restriction in the left-right direction of the vehicle is the crawler track wheel support part 66.
It also has a left-right spring and a dart pot 71 for absorbing shock in the left-right direction.

Spring of crawler wheel support part 66 and dart pot 7
The receiver 1 is a spring and a slide part 7 for the dart pot.
2 so that it can slide forward and backward.

Restriction in the front-rear direction is performed by contact between the wheel support portion 73 and the wheel 3, as in the left-right direction.

Further, in order to absorb shocks in the longitudinal direction, a longitudinal spring and a dash pot 74 are provided between the longitudinal sliding portion 69 and the crawler belt/wheel support portion 66.

Rubbers 75, 75 for shock absorption of the rolling wheels 3 are attached to the front and rear positions of the wheel supporting portion 73, and restrain the movement of the vehicle body 1a in the front and back direction due to pitting or changes in the load arm. Shock-absorbing rubbers 76, 76 of the track wheels 3 are attached to the left and right positions of the crawler track wheel support portion 66, so as to restrict movement of the vehicle body portion 1a in the left and right direction.

When a part of the crawler belt 2 at the lower part of the wheel 3 is removed and a crawler tensioning device 6 is attached to correspond to the crawler tension, a device for supporting the crawler belt tensioning device 6 (a wire rope receiving part 77 for crawler tensioning or Roller chain receiving portions for tensioning the track are provided on both sides of the support frame 24. That is, in the case of a wire rope 28, a pulley 78 and a sprocket are attached and supported in the case of a roller chain.

Next, as shown in FIGS. 25 to 27, one or more sets of wheel support mount devices 11 are installed on each side, and
Movement of the vehicle in the longitudinal and lateral directions is supported by wheels 3.

The wheel contact surface has a slide portion 79, and this surface restricts movement in the front and rear direction. Movement in the left and right direction is restrained by left and right support plates 81 attached to the wheel support section 80. Furthermore, tie rods 82 and left and right support plates 81 are provided for fixing the two sets of wheel support parts 80.
have

For example, the rolling wheel acceleration of the actual vehicle while driving on rough terrain is recorded in a data recorder, and the recording signal of the data recorder is input from the external terminal of the control device 13 of this test device to reproduce the rough terrain driving condition of the actual vehicle. It is now possible to do so.

The operation of the configuration described above will be explained next.

First, tracked vehicle 1 with track 2 still attached.
When exciting the track wheels 3 and crawler tracks 2, each track wheel 3 and crawler track 2 are vibrated by the vibrator 4, and each track wheel 3 and crawler track 2 are connected to each track receiver as shown by the two-dot chain line in Fig. 5. - It is placed on the left and right slide parts 23 of the wheel bearing device 5, and the wheel acceleration of the actual vehicle when traveling on rough terrain is inputted to the control device 13 as appropriate, and each vibrator 4 is controlled to a predetermined vibration frequency. and amplitude, each wheel 3
By selectively or vibrating all the wheels 3, the rough terrain driving condition of the actual vehicle can be reproduced.

At this time, since the crawler track 2 is installed, the piston rod part 1 is
Force in the lateral direction with respect to the axial direction of 4, and vehicle part 1a
The force in the longitudinal direction (longitudinal direction of the crawler belt 2) acts, but this force can be absorbed by sliding the longitudinal slide portion 21 of each vibrator 4. Furthermore, as the vehicle section 1a rolls, a force in the lateral direction with respect to the axial direction of the piston rod section 14, that is, a force in the left-right direction of the vehicle section 1a, acts on each vibrator 4 at the ground contact portion of the crawler track 2. It can be absorbed by sliding the slide part 23. Furthermore, when the vehicle body portion 1a tilts from side to side (rolls), the slide portion holder 19 of the track holder/wheel holder device 5 moves in accordance with the rolling.
is inclined.

Therefore, even if the vehicle body part 1a pitches and rolls and moves in the front and rear and left and right directions, the track support and
The force can be absorbed by the wheel bearing device 5, and the force is directly transmitted to the vibrator 4.
There is no such thing as joining.

Furthermore, when the vehicle body portion 1a is vibrated at a low frequency and with a large amplitude (a condition similar to when driving on large undulating terrain), the vehicle body portion 1a itself may move in the front-rear direction and the left-right direction. . However, the vehicle body portion 1a has front and rear, left and right, front and rear vehicle body support devices 7,
8, and can absorb movement in the longitudinal and lateral directions and restrain the vehicle body portion 1a.

Next, as shown in FIG. 1, a crawler belt 3 is placed in place of the wheel 3 on one side of the vehicle body 1a, excluding the crawler belt at the bottom of the intermediate wheels other than the crawler belts under the first and last wheels 3. Track tensioning device 6 that provides tension equivalent to
Let's talk about when to use. In this case, by removing a portion of the wheel 3, the hard crawler link can be removed, and therefore large-amplitude vibration can be performed, making the vibration test easier. Then, in a state equivalent to wearing a crawler track, as if all the tracks were installed, the actual rolling wheel acceleration when driving on rough terrain is input to the control device 13, and each vibrator 4 is activated at a predetermined frequency and amplitude. It activates and vibrates each wheel, 3, to faithfully reproduce the rough terrain driving conditions of an actual vehicle.

In this case, similarly to the above, the vehicle part 1
The force in the longitudinal direction of a is absorbed by the sliding of the front and rear slide parts 21, and the force in the left and right directions is absorbed by the sliding of the left and right slide parts 23, and even if the vehicle body part 1a rolls, it will not slide. Since the support 19 is inclined, no force is applied to the linear vibrator 4. Furthermore, since the track tensioning device 6 is used instead of the track wheels 3, the vibrator 4 is not subjected to any force in the lateral direction with respect to the axial direction of the vibrator 4 due to track tension.

Furthermore, as shown in FIG. 22, when it is desired to vibrate the first, second, and sixth left and right wheels of the wheel 3, the third, fourth, and fifth left and right wheels are supported by the wheel support device 10. By restricting movement in the longitudinal and lateral directions of the vehicle body that occurs when the vehicle body portion 1a pitches or rolls significantly at low vibration frequencies, it is possible to faithfully reproduce, for example, the rough terrain driving condition of an actual vehicle.
In addition, in FIG. 22, a crawler belt tensioning device 6 is also provided, and vibration can be applied in a state equivalent to wearing the crawler belt. Note that when the vehicle is vibrated at a low frequency and with a large amplitude, the vehicle body pitches or rolls significantly and moves in the longitudinal and lateral directions. In this case, a wheel support mount device 11 is installed as shown in FIG. 23 to restrain movement of the vehicle in the longitudinal and lateral directions.

What has been described above is the first embodiment of the present invention, and next, a second embodiment of the crawler track/wheel support device will be described with reference to FIG. 29. Note that the same reference numerals are used for the same parts as in the first embodiment.

The track support/wheel support device 105 includes the slide portion support 1
19. It has support fixtures 116a, 116b, connectors 115, and springs 118, and uses spherical bearings 150 to tilt the front and rear slide parts 123 and the left and right slide parts 121 in the four-axis directions of the vibrator. It is configured so that it can be tilted freely and arbitrarily, and a spring 118 allows the slide portion receiver 119 to return to its original position when no load is applied.
In addition, in the first and second embodiments of the track support/wheel support device 105, if the slide portion supports 19, 119 do not require inclination, the spring 18 and the spring 118
can be removed, and the support fixture 16 or the support fixture 116b can be directly screwed and fixed.

Next, referring to FIG. 30, a description will be given of a roller chain receiving portion 210 for tensioning the crawler belt when the roller chain 200 is used instead of the wire rope 28 in the aforementioned crawler belt tensioning device 6. Sprockets 227a and 227b are slidably attached to a sprocket shaft 226 in place of the pulley 27, and a roller chain 200 is sandwiched between them, and the roller chain 200 applies tension to the crawler as if it had a crawler. be able to.

Next, third to fifth embodiments of the crawler track support/wheel support device will be described with reference to FIGS. 31 to 33.

The track support/wheel support device 305 of the third embodiment is as follows:
As shown in FIG.
Spring and shock absorber (dash pot) 300, 31 are installed between the left and right slide portions 323 and
0 is provided, so that the shock of the sliding portion in the longitudinal and lateral directions of the vehicle body portion 1a can be reduced. The left and right slide parts 322, the front and rear slide parts 321, the front and rear slide parts 321, and the support fixture 316 are dovetail groove flat bearings 322, 32.
0, and a large number of rollers or balls 325 are provided at the contact portion of the roller 3.

The track support/wheel support device 405 of the fourth embodiment is as follows:
As shown in FIG.
0, and the front and rear slide part 421 and the support fixture 4
16 is made to slide with a hydrostatic bearing 450, and the support fixture 416 is equipped with an injection oil pipe 4 that supplies hydraulic pressure to the hydrostatic bearings 450, 440.
60 and the oil pipe 470 is connected thereto. Note that center return springs are built in between the left and right slide parts 423 and the front and rear slide parts 421, and between the front and rear slide parts 421 and the support fixture 416.

The crawler track/wheel support device 505 of the fifth embodiment is as follows:
As shown in FIG. 33A, the structure is similar to that of the fourth embodiment, and the left and right slide parts 523, the front and rear slide parts 520, and the front and rear slide parts 520 are slidable by hydrostatic bearings 540 and 550. .
In addition, a small cylinder piston 590 with a ball is attached to a return spring 590a at the part that comes into contact with the rolling wheel 3.
As shown in the hydraulic circuit shown in FIG. 33B, each cylinder piston 59
0 is supplied with oil from a hydraulic pump 570 and an injection oil pipe 560, and each cylinder piston 590 can resist the weight of the vehicle body part 1 by the oil pressure.

Next, as another method of supporting the actual crawler track, the sixth and seventh embodiments of the track support/roller support device will be described in the 34th example.
This will be explained with reference to the drawings and FIG. 35.

First, the crawler track/roller receiver device 60 of the sixth embodiment
5 is connected to a slide portion receiver 619 via a connector 616 screwed to the piston rod portion 14 of the vibrator 4 and a pin 617. Further, the slide portion receiver 619 is connected to the left and right slide portions 623 with sprockets via a front and rear slide portion 621 through a dovetail groove.

The crawler contact portion of the left and right sliding portions 623 with sprockets has a sprocket 623a and is structured to mesh with the end connector 2a of the crawler 2.

The force in the lateral direction of the sprocket axis of the vibrator 4 due to crawler track tension escapes through the front and rear slide portions 62.
1. Furthermore, a spring and a shock absorber are incorporated to absorb shock in the longitudinal direction. Lateral escape of the vibration exciter 4 with respect to the piston rod axial direction, which occurs when the vehicle body part 1 is tilted left and right (rolling), is achieved by the left and right slide parts 623 with sprockets, and the shock absorption spring and the shock absorber are moved by the left and right slides with sprockets. It is incorporated between the section 623 and the front and rear slide section 621.

In addition, due to the tilting of the crawler track and wheels due to the left and right tilt of the vehicle body portion 1a, the slide portion receiver 619 is moved by the pin 617.
The structure is such that it is tilted at the center and returns to the horizontal position by a spring 618 when no load is applied.

If the slide part receiver 619 does not need to be tilted, the spring 618 is removed and the support fixture 16 is screwed and fixed.

The left and right slide parts 623 with sprockets have a clamp 680, and a cushioning rubber 690 is attached to the end connector 2a side of the crawler track 2.

Next, the crawler support of the seventh embodiment shown in FIG.
The difference between the track bearing device 705 and the crawler track/wheel support device 605 of the sixth embodiment is that the force in the lateral direction (back and forth) in the axial direction of the piston rod of the vibrator 4 due to the track tension generated during vibration. The escape (direction movement) consists in being achieved by rotation about the pin 617. Other structures and functions are the same as the crawler track/roller receiver device 605 shown in FIG. 34.

In addition, in order to enable the slide part receiver 719 to tilt in the front-rear and left-right directions, the front-rear slide part 21 and the left-right slide part 23 shown in FIG. 4 are removed.
Left and right sliding parts 6 with sprockets shown in Fig. 35
23 is installed.

Next, another wheel support frame 867 in which the crawler belt tensioning device 6 is used will be explained with reference to FIG. 36. The wheel support part 900 fixed on the wheel support base 867 has cushioning rubber 91 on the front and rear surfaces in contact with the wheel 3.
0 is attached so that movement of the rolling wheels 3 in the front and back direction can be restrained.To summarize the above, the following embodiments can be considered.

(1) For tracked vehicles equipped with a track tensioning device for applying tension to the crawler instead of the crawler in the part other than the crawler below the first and last track, but excluding the crawler below the intermediate track. Vibration test device (2) A wire rope or roller chain is attached to the part of the lower part of each wheel from which the crawler track has been removed, and equivalent tension is applied to the track, making it easy to excite the track as if it were a cage with a track. Vibration test device for tracked vehicles equipped with a track tension device.

(3) Wire rope receivers for crawler tensioning or roller chain receivers for tensioning the track are installed on both sides of the track tensioning device, and the wire rope or roller chain of the track tensioning device and the rolling wheels are simultaneously vibrated. Vibration test equipment for tracked vehicles.

(4) The wire rope receiver for tensioning the track or the roller chain receiver for tensioning the track can be removed to vibrate the intermediate wheels, making it possible to conduct tests that can determine the effect of changes in track tension due to road surface irregularities on vehicle body sway. Vibration test equipment for tracked vehicles.

(5) Vibration testing device for tracked vehicles that can vibrate only the rolling wheels by removing the track at the ground contact area, attaching a track tensioning device, and removing the wire rope receiver or roller chain receiver for tensioning the track. The vibration test device for tracked vehicles is equipped with a track fixing device that fixes the tracks required during vibration, a vehicle body support device that supports the vehicle body, and a wheel support device that supports the wheels.

As explained above, the vibration testing device for tracked vehicles according to the present invention includes a vibrator that vibrates wheels or tracks at a predetermined frequency and amplitude, and a vibrator that is attached to a piston rod portion of the vibrator. A receiving device that supports the wheels or tracks and is slidable in the longitudinal and lateral directions of the vehicle, and a vehicle body support device that supports and restrains the movement of the vehicle body of the tracked vehicle in the longitudinal and lateral directions. The configuration includes at least the following. Therefore, according to the present invention, it is possible to vibrate a tracked vehicle with tracks attached, and
Since it can handle rolling or pitching of the vehicle during vibration, there is no risk of excessive force being applied to the vibration exciter, and it can be vibrated at a low frequency and large amplitude, making it possible to reproduce a wide range of driving conditions. Therefore, the driving conditions of an actual vehicle can be faithfully reproduced by the vibration exciter, which has the effect of improving the accuracy of vibration testing of tracked vehicles.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of the vibration test apparatus of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view of the same.
FIG. 4 is a side view showing the track support and wheel support device, FIG. 5 is a front view thereof, FIG. 6 is a perspective view showing the left and right sliding parts of the track support and the wheel support device, and FIG. 7 8 is a plan view showing the track tensioning device, FIG. 8 is a side view of the same,
Figure 9 is a side view of the front and rear and left and right vehicle body support devices;
FIG. 10 is a plan view of the same, FIG. 11 is a plan view of the front and rear vehicle body support device, FIG. 12 is a side view of the same, and FIG.
21 to 21 are configuration explanatory diagrams showing a crawler belt fixing device, FIGS. 22 to 24 are configuration explanatory diagrams showing a rolling wheel support device, and FIGS. 25 to 28 are configuration explanatory diagrams showing a rolling wheel support mount device. FIG. 29 is a side view of the second embodiment of the track support and wheel support device, and FIG.
31, 32 and 33 are perspective views showing third, fourth and fifth embodiments of the track support and wheel support device. , FIGS. 34A and 34B are side and front views showing a sixth embodiment of the track holder and wheel holder device, and FIGS. 35A and B are a seventh embodiment of the track holder and wheel holder device. A side view and a front view showing an example, and FIG. 36 are a side view and a front view showing another wheel supporting frame. 1...tracked vehicle, 2...crawler, 3...roller, 4
... Vibrator, 5,105,305,405,50
5,605...Crawler support, wheel support device, 6...Crawler tension device, 7,8...Front and rear, left and right, and front and rear vehicle body support device, 9...Crawler fixing device, 10...Trail support device, 11 ...Rolling wheel support frame.

Claims (1)

[Scope of Claims] 1. A vibration testing device that excites a tracked vehicle having many wheels equipped with tracks, which comprises: a vibration exciter that vibrates the wheels or tracks at a predetermined frequency and amplitude; , a receiving device that is attached to the piston rod portion of the vibrator to support the wheels or tracks and is slidable in the longitudinal and lateral directions of the vehicle; a vehicle body support device that supports and restrains movement in the direction;
A vibration testing device for a tracked vehicle, characterized in that it is configured to include at least the following. 2. The vibration testing device for a tracked vehicle according to claim 1, wherein the receiving device is tiltable according to the inclination of the crawler wheels as the vehicle inclines from side to side.