Vibration testing device for vehicle engineering

Abstract

The utility model relates to the field of vehicle testing, in particular to a vibration testing device for vehicle engineering, which comprises a base and a testboard arranged on the top of the base, and four actuators are arranged on the base. The number of the limiting mechanisms is four, and the limiting mechanisms are arranged in the test bench and are used for limiting vehicle tires; wherein the limiting mechanism comprises an arc-shaped box capable of sliding in the test board, the actuator is installed on the outer side of the arc-shaped box, and two clamping pieces are arranged in the arc-shaped box; the arc-shaped box is used for carrying out offset fixation on vehicle tires, the phenomenon of vehicle offset can be reduced while vertical vibration testing is carried out, the position of the arc-shaped box can be adjusted according to different vehicle conditions, the application range is wider, various vibration testing modes are adopted, various types of targeted data are obtained, and the vehicle testing result is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of vehicle testing, and in particular to a vibration testing device for vehicle engineering. Background Technology

[0002] Vehicle vibration occurs during vehicle operation. Vehicle vibration can affect passenger comfort and can easily lead to loosening of vehicle parts or premature fatigue damage. Therefore, it is necessary to use testing equipment to test vehicle vibration.

[0003] A search revealed that the Chinese patent "A Vehicle Anti-Flutter Performance Test Stand" (authorization announcement number CN220932379U) includes a base placed on a horizontal surface; it also includes a testing mechanism, a simulation adjustment mechanism, a lifting mechanism, and a protective mechanism. The testing mechanism performs anti-flutter tests on vehicles, and the simulation adjustment mechanism can comprehensively simulate road slopes, improving the realism of the test and ensuring the accuracy of the results. However, this method has the following drawbacks in actual operation: when adjusting the slope to conduct anti-vibration tests on vehicles, the vehicles are prone to significant deviations during the test, even moving outside the test stand, affecting the test results. Furthermore, this vibration test method is singular and cannot be specifically tested for different vehicle models and anti-vibration emphasis directions, resulting in incomplete test data and inaccurate vehicle test results.

[0004] Therefore, a vibration testing device for vehicle engineering is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a vibration testing device for vehicle engineering to solve the above-mentioned problems, thereby improving the issues that vehicles are prone to large-scale deviations during testing and that it is difficult to conduct targeted testing for different vehicle models and vibration resistance orientations.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a vibration testing device for vehicle engineering, comprising a base and a test platform disposed on top of the base, wherein four actuators are disposed on the base; and a limiting mechanism, wherein the number of the limiting mechanism is four, the limiting mechanism being disposed inside the test platform and used to limit the vehicle tires; wherein, the limiting mechanism includes an arc-shaped box that can slide within the test platform, the actuators being mounted on the outside of the arc-shaped box, and two clamping members being disposed inside the arc-shaped box.

[0007] Preferably, the clamping member includes a support block slidably connected to the interior of the arc-shaped box, a set of semicircular blocks that can move inside the support block are embedded on one side, and a set of clamping strips are provided on one side of the semicircular blocks.

[0008] Preferably, a first hydraulic rod is installed between each of two adjacent actuators, the bottom end of one actuator is fixedly installed to the top of the test bench, and the bottom of the remaining actuators is embedded with ball bearings that contact the top of the test bench.

[0009] Preferably, a set of limiting plates is installed on the outer side of the arc-shaped box, and the outer side of the limiting plates is slidably connected to the inside of the test platform.

[0010] Preferably, a connecting plate is installed at the bottom of the support block, and a second hydraulic rod is provided on the outer side of the connecting plate, with one end of the second hydraulic rod fixedly installed to the outer side of the arc-shaped box.

[0011] Preferably, the clamping bar is slidably connected to the semicircular block, and a spring is installed between the clamping bar and the semicircular block.

[0012] Preferably, the base is equipped with two side platforms located on both sides of the test platform.

[0013] The beneficial effects of the utility model are:

[0014] 1. By setting up an arc-shaped box, the car tire is supported by the arc-shaped box. Its inner wall can limit the outer side of the tire, which reduces the large displacement phenomenon without affecting the vibration test of the car, ensuring the stability during the measurement process, reducing the occurrence of the vehicle leaving the test stand, and the arc-shaped box can follow and adjust according to the movement of the corresponding first hydraulic rod on the actuator, thus making it suitable for different car models.

[0015] 2. By setting up a semicircular block, after the four actuators have performed a basic vibration test on the vehicle, the second hydraulic rod can be activated to move the semicircular block towards the vehicle's wheel hub. Subsequently, the semicircular block will make a slight adaptive movement according to the shape of the wheel hub, while the clamping strip makes multi-point contact with the outer side of the wheel hub to ensure clamping stability. This allows the front and rear wheels of the vehicle to be fixed and locked separately. Then, the actuators in the corresponding positions are used in sequence to perform vibration tests on the rear and front of the vehicle, increasing the diversity of the test, enriching the vibration data, and ensuring more accurate vibration results. Attached Figure Description

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a cross-sectional view of the test bench structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the actuator and the first hydraulic rod structure of this utility model;

[0019] Figure 4 The structure of this utility model Figure 2 Enlarged diagram of A in the middle;

[0020] Figure 5 This is a cross-sectional view of the support block and semi-circular block structure of this utility model.

[0021] In the diagram: 100, base; 200, test platform; 300, limiting mechanism; 310, arc-shaped box; 311, limiting plate; 320, clamping component; 321, support block; 322, semi-circular block; 323, clamping bar; 324, second hydraulic rod; 325, spring; 400, actuator; 410, first hydraulic rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] When implementing: Figure 1-5 As shown, a vibration testing device for vehicle engineering includes a base 100 and a test platform 200 disposed on top of it, and four actuators 400 are disposed on the base 100.

[0024] There are four limiting mechanisms 300. The limiting mechanisms 300 are located inside the test bench 200 and are used to limit the vehicle tires.

[0025] The limiting mechanism 300 includes an arc-shaped box 310 that can slide within the test bench 200, an actuator 400 installed on the outside of the arc-shaped box 310, and two clamping members 320 provided inside the arc-shaped box 310; two side platforms located on both sides of the test bench 200 are installed on the base 100.

[0026] Before the vibration test, the staff can adjust the arc box 310 to correspond to the wheel position of the vehicle according to the vehicle model. Then, the vehicle is driven along the side platform to the test platform 200 until the tires of the vehicle are placed inside the arc box 310 to limit the vehicle and reduce the large displacement of the vehicle during the vibration. Then, the actuator 400 can be started to operate and the vehicle vibration test can be carried out.

[0027] All actuators can be synchronized and driven at the same frequency to drive the vehicle, detect vibration, and record data;

[0028] It can also synchronize all actuators 400 but drive the vehicle at different frequencies, detect vibration, and record data;

[0029] It can also drive the vehicle asynchronously but at the same frequency using all 400 actuators to detect vibration and record data;

[0030] After completing the basic vibration test, clamp 320 can be used to lock and limit the vehicle tires, followed by targeted testing.

[0031] The front tires of the vehicle can be locked and fixed by the corresponding clamping device 320. At this time, the front wheels of the vehicle are in a fixed state. During the vibration, the vehicle will swing the front wheel drive shaft, and then the actuator 400 at the rear wheel position will operate. Then the rear of the vehicle will vibrate. At this time, the vibration is detected and the data is recorded.

[0032] Alternatively, the corresponding clamping device 320 can be used to lock and fix the rear tires of the vehicle. At this time, the rear wheels of the vehicle are in a fixed state. During the vibration process, the vehicle will swing the rear wheel drive shaft, and then the actuator 400 at the front wheel position will operate, and then the front of the vehicle will vibrate. At this time, the vibration is detected and the data is recorded. Multiple vibration methods are used to test the vehicle to increase the richness of vibration data and ensure the accuracy of vibration results.

[0033] like Figure 4 and Figure 5 As shown, the clamping member 320 includes a support block 321 that is slidably connected to the inside of the arc-shaped box 310. A set of semi-circular blocks 322 that can move inside are embedded on one side of the support block 321, and a set of clamping strips 323 are provided on one side of the semi-circular blocks 322.

[0034] The semicircular block 322 is used to clamp and fix the vehicle wheel hub. Since the wheel hubs of different models are different in size and dimensions, the semicircular block 322 can make slight adaptive movements according to the shape of the wheel hub during the approach process, which makes it more applicable. Combined with the clamping strip 323, the contact point between the semicircular block 322 and the wheel hub is improved, ensuring clamping stability.

[0035] like Figure 1 and Figure 3 As shown, a first hydraulic rod 410 is installed between each of two adjacent actuators 400. The bottom end of one actuator 400 is fixedly installed to the top of the test bench 200, and the bottom of the remaining actuators 400 is embedded with balls that contact the top of the test bench 200.

[0036] The first hydraulic rod 410, which is parallel to the direction of vehicle travel, is operated to adjust the position between the corresponding arc-shaped boxes 310 and adjust the distance between the front and rear wheels of the vehicle.

[0037] The first hydraulic rod 410, which is perpendicular to the direction of vehicle travel, is used to adjust the position between the corresponding arc-shaped boxes 310, thereby adjusting the distance between the two front wheels and the two rear wheels.

[0038] like Figure 1 and Figure 2 As shown, a set of limiting plates 311 are installed on the outer side of the arc-shaped box 310, and the outer side of the limiting plates 311 is slidably connected to the inside of the test bench 200.

[0039] The use of the limiting plate 311 ensures the stability of the arc box 310 on the test platform 200. During the adjustment and movement of the arc box 310, the limiting plate 311 will follow the movement and provide continuous support.

[0040] like Figure 5 As shown, a connecting plate is installed at the bottom of the support block 321, and a second hydraulic rod 324 is provided on the outside of the connecting plate. One end of the second hydraulic rod 324 is fixedly installed on the outside of the arc-shaped box 310.

[0041] During the clamping operation, the corresponding second hydraulic rod 324 is activated, causing the connecting plate to move the support block 321 into the arc-shaped box 310 to perform the clamping operation.

[0042] like Figure 4 and Figure 5 As shown, the clamping bar 323 is slidably connected to the semicircular block 322, and a spring 325 is installed between the clamping bar 323 and the semicircular block 322.

[0043] During the clamping operation, the clamping bar 323 is in close contact with the wheel hub. At this time, the spring 325 at the corresponding position is in a compressed state. After the clamping operation is completed, the spring 325 can drive the corresponding clamping bar 323 to return to its original position, which is convenient for the next clamping process.

[0044] Working principle: Before the vibration test, the operator can adjust the arc-shaped box 310 to correspond to the wheel position of the vehicle model. Then, the vehicle is driven along the side platform onto the test platform 200 until the tires are placed inside the arc-shaped box 310 to limit the vehicle and reduce the possibility of large-scale displacement during vibration. Then, the actuator 400 can be activated to perform the vibration test on the vehicle. All actuators 400 can be driven synchronously and at the same frequency to detect vibration and record data; all actuators 400 can be driven synchronously but at different frequencies to detect vibration and record data; all actuators 400 can be driven asynchronously but at the same frequency to detect vibration and record data.

[0045] After completing the basic vibration test, the corresponding second hydraulic rod 324 is activated, causing the connecting plate to move the support block 321 at the front wheel position into the arc-shaped box 310. The semi-circular block 322 and the clamping strip 323 clamp and fix the front wheel hub. At this time, the front wheel of the vehicle is in a fixed state. During the vibration process, the vehicle will swing at the front wheel drive shaft, and then the actuator 400 at the rear wheel position will operate, and then the rear of the vehicle will vibrate. At this time, the vibration is detected and the data is recorded. Alternatively, the corresponding clamping piece 320 can be used to lock and fix the rear tire of the vehicle. At this time, the rear wheel of the vehicle is in a fixed state. During the vibration process, the vehicle will swing at the rear wheel drive shaft, and then the actuator 400 at the front wheel position will operate, and then the front of the vehicle will vibrate. At this time, the vibration is detected and the data is recorded. Using multiple vibration methods to test the vehicle increases the richness of vibration data and ensures the accuracy of vibration results.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vibration testing device for vehicle engineering, characterized in that, include: A base (100) and a test platform (200) disposed on top thereof, wherein four actuators (400) are disposed on the base (100); The limiting mechanism (300) is four in number and is disposed inside the test bench (200) and is used to limit the vehicle tires; The limiting mechanism (300) includes an arc-shaped box (310) that can slide within the test bench (200), the actuator (400) is mounted on the outside of the arc-shaped box (310), and two clamping members (320) are provided inside the arc-shaped box (310).

2. The vibration testing device for vehicle engineering according to claim 1, characterized in that: The clamping member (320) includes a support block (321) slidably connected to the inside of the arc-shaped box (310). A set of semicircular blocks (322) that can move inside the support block (321) are embedded on one side. A set of clamping strips (323) are provided on one side of the semicircular blocks (322).

3. The vibration testing device for vehicle engineering according to claim 1, characterized in that: A first hydraulic rod (410) is installed between each of two adjacent actuators (400). The bottom end of one actuator (400) is fixedly installed to the top of the test bench (200), and the bottom of the remaining actuators (400) is embedded with balls that contact the top of the test bench (200).

4. The vibration testing device for vehicle engineering according to claim 1, characterized in that: A set of limiting plates (311) are installed on the outside of the arc-shaped box (310), and the outside of the limiting plates (311) is slidably connected to the inside of the test bench (200).

5. A vibration testing device for vehicle engineering according to claim 2, characterized in that: A connecting plate is installed at the bottom of the support block (321), and a second hydraulic rod (324) is provided on the outside of the connecting plate. One end of the second hydraulic rod (324) is fixedly installed on the outside of the arc-shaped box (310).

6. A vibration testing device for vehicle engineering according to claim 2, characterized in that: The clamping bar (323) is slidably connected to the semicircular block (322), and a spring (325) is installed between the clamping bar (323) and the semicircular block (322).

7. A vibration testing device for vehicle engineering according to claim 1, characterized in that: Two side platforms are installed on the base (100) on both sides of the test platform (200).

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