A vibration test device for wide-body vehicles

Abstract

The present invention discloses a vibration test device for a wide-body vehicle, which comprises a first connecting beam and at least two vibration mechanisms; the at least two vibration mechanisms are connected by the first connecting beam; each vibration mechanism comprises a pedestal, on which a vibration generating part and a suspension cylinder fixing part are provided, and the suspension cylinder fixing part is located above the vibration generating part; the suspension cylinder fixing parts of the at least two vibration mechanisms are connected by the first connecting beam, so that the vibration generating parts of the at least two vibration mechanisms are used to perform coupling tests on the suspension cylinders to be tested that are respectively carried by the vibration generating parts, thereby meeting the testing requirements of new suspension forms of wide-body vehicles.

Description

Technical Field

[0001] The invention relates to the field of vehicle testing, and in particular to a vibration testing device for a wide-body vehicle. Background Art

[0002] Wide-body vehicles are off-road mining vehicles used in fields, mines and other unpaved roads. With the upgrade of wide-body vehicles, the middle and rear axle suspensions have been changed from traditional leaf springs to dual oil-gas suspensions. The two suspension cylinders are connected through an accumulator to simulate the balance shaft of the leaf spring, which makes the two suspension cylinders have a certain correlation in load, speed and displacement. However, the existing test device cannot realize the linkage test of the two suspension cylinders and cannot meet the test requirements of the new suspension form of wide-body vehicles. Summary of the invention

[0003] The purpose of the present invention is to provide a vibration test device for a wide-body vehicle, so as to solve the problem that the existing test device cannot realize the linkage test of two suspension cylinders and cannot meet the test requirements of new suspension forms of wide-body vehicles.

[0004] According to an embodiment of the present invention, a vibration testing device for a wide-body vehicle is provided, comprising a first connecting beam and at least two vibration mechanisms; at least two of the vibration mechanisms are connected by the first connecting beam; each of the vibration mechanisms comprises a pedestal, on which the vibration generating part and the suspension cylinder fixing part are provided, and the suspension cylinder fixing part is located above the vibration generating part; the suspension cylinder fixing parts of at least two of the vibration mechanisms are connected by the first connecting beam.

[0005] Specifically, the first connecting beam is also provided with an accumulator fixing portion for fixing the accumulator.

[0006] Specifically, the vibration testing device also includes a second connecting beam, and the vibration generating parts of at least two of the vibration mechanisms are connected through the second connecting beam. The first connecting beam is provided with a first oil and gas cylinder fixing part for connecting to one end of the oil and gas cylinder to be tested, and the second connecting beam is provided with a second oil and gas cylinder fixing part for connecting to the other end of the oil and gas cylinder to be tested.

[0007] Specifically, the pedestal includes a base and a bracket connected to the base, the bracket is arranged in a vertical direction, the vibration generating part is installed on the base, and each of the vibration mechanisms also includes a lifting connection piece, and the suspension cylinder fixing part is connected to the bracket through the lifting connection piece so that the suspension cylinder fixing part is fixed at different heights of the bracket.

[0008] Specifically, the lifting connection member includes a bolt, a first screw hole arranged on the suspension cylinder fixing part, and a plurality of second screw holes arranged in sequence from top to bottom on the bracket, and the bolt can pass through the first screw hole and one of the second screw holes to fix the suspension cylinder fixing part on the bracket.

[0009] Specifically, each of the vibration mechanisms further includes a load-bearing portion for balancing the suspension cylinder to be tested.

[0010] Specifically, the load-bearing part includes a connecting rope, a pulley group, a counterweight block and a detachable connecting piece arranged on the suspension cylinder to be tested. The pulley group is installed on the pedestal, one end of the connecting rope is connected to the detachable connecting piece, and the other end of the connecting rope passes around the pulley group and is connected to the counterweight block.

[0011] Specifically, the detachable connecting piece is a clamp.

[0012] Specifically, the vibration generating part is a servo actuator.

[0013] An embodiment of the present invention provides a vibration test device for a wide-body vehicle, the test device comprising a first connecting beam and at least two vibration mechanisms; the at least two vibration mechanisms are connected by the first connecting beam; each vibration mechanism comprises a pedestal, the pedestal is provided with a vibration generating part and a suspension cylinder fixing part, and the suspension cylinder fixing part is located above the vibration generating part; the suspension cylinder fixing parts of the at least two vibration mechanisms are connected by the first connecting beam, so that the vibration generating parts of the at least two vibration mechanisms are used to perform coupling tests on the suspension cylinders to be tested that they respectively carry, thereby meeting the testing requirements of new suspension forms of wide-body vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A structural diagram of a coupled vibration test of a vibration test device for a wide-body vehicle shown in one embodiment of the present invention;

[0016] Figure 2 This is a structural diagram of a combined vibration test of a vibration test device for a wide-body vehicle shown in one embodiment of the present invention.

[0017] Among them, 1-vibration mechanism, 101-pedestal, 1011-base, 1012-bracket, 102-vibration generating part, 103-counterweight block, 104-pulley block, 105-suspension cylinder fixing part, 2-suspension cylinder to be tested, 3-first connecting beam, 4-accumulator fixing part, 5-accumulator, 6-hose, 7-oil and gas cylinder to be tested, 8-second connecting beam, 9-first oil and gas cylinder fixing part, 10-second oil and gas cylinder fixing part. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] According to an embodiment of the present invention, Figure 1 and Figure 2 As shown, a vibration test device for a wide-body vehicle is provided, comprising a first connecting beam 3 and at least two vibration mechanisms 1; the at least two vibration mechanisms 1 are connected by the first connecting beam 3; each vibration mechanism 1 comprises a pedestal 101, on which a vibration generating part 102 and a suspension cylinder fixing part 105 are provided, and the suspension cylinder fixing part 105 is located above the vibration generating part 102; the suspension cylinder fixing parts 105 of at least two vibration mechanisms 1 are connected by the first connecting beam 3.

[0020] The vibration generating part 102 can be arranged in the vertical direction, that is, one end of the vibration generating part 102 is fixed on the pedestal 101, and the other end of the vibration generating part 102 can be detachably connected to one end of the suspension cylinder 2 to be tested, and the other end of the suspension cylinder 2 to be tested is detachably connected to the suspension cylinder fixing part 105. The position of each vibration mechanism 1 can be adjusted according to actual test requirements. For coupling test of two suspension cylinders 2 to be tested with two vibration structures, the two structures can be arranged relative to each other.

[0021] When a coupled vibration test is required, the suspension cylinder 2 to be tested is fixed on the suspension cylinder fixing part 105 of each vibration mechanism 1, thereby simulating the structural form of the rear suspension cylinder in a wide-body vehicle, and then the vibration generating part 102 of each vibration mechanism 1 is controlled to generate coupled vibration, and a coupled vibration test is performed on the suspension cylinder 2 to be tested fixed by each vibration mechanism 1. At the same time, pressure, displacement and other sensors can be set on the vibration generating part 102 to obtain the required test data. Therefore, the vibration testing device uses the vibration generating parts of at least two vibration mechanisms to perform coupled tests on the suspension cylinders to be tested respectively carried by each vibration mechanism, which can meet the testing requirements of new suspension forms of wide-body vehicles.

[0022] Furthermore, if Figure 1 As shown, the first connecting beam 3 is also provided with an accumulator fixing part 4 for fixing the accumulator 5. The accumulator fixing part 4 can be a vertical beam perpendicular to the first connecting beam 3, and a cavity for accommodating the accumulator 5 is provided on the vertical beam. The accumulator 5 is installed on the accumulator fixing part 4, and the accumulator 5 is connected to each suspension cylinder 2 to be tested through a hose 6, so that the structure is closer to the rear and middle suspension cylinders of a wide-body vehicle, thereby improving the accuracy of the suspension cylinder coupling test.

[0023] Furthermore, if Figure 1As shown, the pedestal 101 includes a base 1011 and a bracket 1012 connected to the base 1011, the bracket 1012 is arranged in a vertical direction, and the vibration generating part 102 is installed on the base 1011. Each vibration mechanism 1 also includes a lifting connection piece, and the suspension cylinder fixing part 105 is connected to the bracket 1012 through the lifting connection piece so that the suspension cylinder fixing part 105 is fixed at different heights of the bracket 1012.

[0024] The fixing height of the suspension cylinder fixing part 105 on the bracket 1012 is adjusted to adapt to suspension cylinders 2 of different sizes to be tested, so that vibration tests can be performed on suspension cylinders 2 of different sizes to be tested, further improving the adaptability of the vibration device.

[0025] Specifically, Figure 1 As shown, the lifting connection member includes a bolt, a first screw hole set on the suspension cylinder fixing part 105, and a plurality of second screw holes are sequentially provided on the bracket 1012 from top to bottom. The bolt can pass through the first screw hole and one of the second screw holes to fix the suspension cylinder fixing part 105 on the bracket 1012.

[0026] By utilizing the plurality of second screw holes sequentially arranged from top to bottom on the bracket 1012 , the suspension cylinder fixing portion 105 can be fixed at different heights of the bracket 1012 by bolts, which not only has a simple structure but also is convenient for operators to operate.

[0027] Furthermore, if Figure 1 As shown, each vibration mechanism 1 also includes a load-bearing part for applying a lateral force to the suspension cylinder 2 to be tested. Specifically, the load-bearing part 103 includes a connecting rope, a pulley block 104, a counterweight block 103, and a detachable connecting member arranged on the suspension cylinder 2 to be tested, the pulley block 104 is installed on the pedestal 101, one end of the connecting rope is connected to the detachable connecting member, and the other end of the connecting rope passes through the pulley block 104 and is connected to the counterweight block 103.

[0028] Specifically, the pulley block 104 may be composed of a plurality of pulleys arranged at different positions of the pedestal 101, and the gravity of the counterweight block 103 in the vertical direction is converted into a lateral force applied to the suspension cylinder 2 to be tested through the pulley block 104. In a specific application, the pulley block may include three pulleys, one of which is arranged on a side of the suspension cylinder 2 to be tested, and the other two pulleys are arranged at the top of the bracket 1011. One end of the connecting rope is connected to the detachable connecting piece, and the other end of the connecting rope passes through the lower end of the pulley arranged on one side of the suspension cylinder 2 to be tested, and then passes through the upper ends of the two pulleys located on the bracket 1011 and is connected to the counterweight block 103. In this way, the gravity of the counterweight block can be used to apply a lateral force to the suspension cylinder 2 to be tested.

[0029] The detachable connecting member is a clamp to facilitate disassembly by the staff, and is installed on the suspension cylinder 2 to be tested by using the detachable connecting member, so that a lateral force can be applied to the suspension cylinder 2 to be tested through the counterweight block 103 to better fit the actual road conditions.

[0030] In other embodiments, Figure 2 As shown, the test device of the present application can also perform vibration tests on large-tonnage load oil and gas cylinders. Specifically, the vibration test device also includes a second connecting beam 8, and the vibration generating parts 102 of at least two vibration mechanisms 1 are connected through the second connecting beam 8. The first connecting beam 3 is provided with a first oil and gas cylinder fixing part 9 for connecting to one end of the oil and gas cylinder to be tested, and the second connecting beam 8 is provided with a second oil and gas cylinder fixing part 10 for connecting to the other end of the oil and gas cylinder to be tested.

[0031] When a vibration test of a large-tonnage load oil and gas cylinder is required, the oil and gas cylinder 7 to be tested is vertically fixed by the first oil and gas cylinder fixing part 9 and the second oil and gas cylinder fixing part 10, and then the vibration generating part 102 of each vibration mechanism 1 is started to vibrate, and the vibration is transmitted to the oil and gas cylinder 7 to be tested through the second connecting beam 8 for vibration testing. Similarly, pressure, displacement and other sensors are set on the vibration generating part 102 to obtain the required test data. Therefore, the vibration testing device can also perform vibration testing on a large-tonnage load oil and gas cylinder, further improving the applicability of the vibration testing device.

[0032] In the above embodiment, the vibration generating unit 102 is a servo actuator. Under the control of the servo valve, the servo actuator can generate vibration according to a given signal. The signal can realize a spectrum signal or a harmonic signal. When the servo actuators of each vibration mechanism 1 are combined to perform a vibration test on a large-tonnage load oil and gas cylinder, each servo actuator can use a smaller cylinder diameter, thereby increasing the vibration frequency of the servo actuator. Therefore, after reducing the number of servo actuators, the vibration test of a small-tonnage load oil and gas cylinder can also be performed.

[0033] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0034] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A vibration test device for a wide-body vehicle, characterized in that: It comprises a first connecting beam (3) and at least two vibration mechanisms (1); At least two of the vibration mechanisms (1) are connected via the first connecting beam (3); Each of the vibration mechanisms (1) comprises a pedestal (101), on which a vibration generating part (102) and a suspension cylinder fixing part (105) are provided, and the suspension cylinder fixing part (105) is located above the vibration generating part (102); Each of the vibration mechanisms (1) further comprises a load-bearing part for applying a lateral force to the suspension cylinder (2) to be tested, the load-bearing part comprising a connecting rope, a pulley block (104), a counterweight (103) and a detachable connecting member arranged on the suspension cylinder (2) to be tested, the pulley block (104) being mounted on the pedestal (101), one end of the connecting rope being connected to the detachable connecting member, and the other end of the connecting rope passing around the pulley block (104) being connected to the counterweight (103); The suspension cylinder fixing parts (105) of at least two of the vibration mechanisms (1) are connected via the first connecting beam (3), and the first connecting beam (3) is also provided with an accumulator fixing part (4) for fixing the accumulator (5).

2. The vibration testing device for a wide-body vehicle according to claim 1, characterized in that: The vibration testing device further comprises a second connecting beam (8), the vibration generating parts (102) of at least two of the vibration mechanisms (1) are connected via the second connecting beam (8), the first connecting beam (3) is provided with a first oil and gas cylinder fixing part (9) for connecting to one end of the oil and gas cylinder to be tested, and the second connecting beam (8) is provided with a second oil and gas cylinder fixing part (10) for connecting to the other end of the oil and gas cylinder to be tested.

3. The vibration testing device for a wide-body vehicle according to claim 1, characterized in that: The pedestal (101) comprises a base (1011) and a bracket (1012) connected to the base (1011); the bracket (1012) is arranged in a vertical direction; the vibration generating part (102) is mounted on the base (1011); each of the vibration mechanisms (1) further comprises a lifting connection piece; the suspension cylinder fixing part (105) is connected to the bracket (1012) via the lifting connection piece, so that the suspension cylinder fixing part (105) is fixed at different heights of the bracket (1012).

4. The vibration testing device for a wide-body vehicle according to claim 3, characterized in that: The lifting connection member comprises a bolt, a first screw hole arranged on the suspension cylinder fixing part (105), and a plurality of second screw holes arranged on the bracket (1012) at intervals in the vertical direction. The bolt can pass through the first screw hole and one of the second screw holes to fix the suspension cylinder fixing part (105) on the bracket (1012).

5. The vibration testing device for a wide-body vehicle according to claim 1, characterized in that: The detachable connecting piece is a clamp.

6. The vibration testing device for a wide-body vehicle according to claim 1, characterized in that: The vibration generating unit (102) is a servo actuator.

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