Static stiffness test tool for simulating vehicle plate spring structure
By designing the static stiffness test tooling of the cantilever unit and the mounting bracket, the problem of failure to effectively simulate vehicle leaf springs in the prior art is solved, and higher test accuracy and connection efficiency are achieved, and the differences in leaf spring specifications and connection positions of different vehicles are adapted.
Patent Information
- Application Number
- CN202422133880.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-29
AI Technical Summary
The existing vehicle static stiffness test device fails to effectively simulate the vehicle leaf spring structure, resulting in insufficient accuracy of the static stiffness test results.
A static stiffness test tooling including a cantilever unit, a front mounting unit and a rear mounting bracket is designed. The cantilever unit matches the position and posture of the vehicle leaf spring through the front and rear mounting brackets to simulate the leaf spring, and achieves quick connection through adjustable mounting holes and bracket structures.
It improves the accuracy and efficiency of static stiffness tests, ensures that the cantilever can truly simulate the leaf spring structure, enhances the support and fixation effect of the vehicle, and adapts to the differences in leaf spring specifications and connection positions of different vehicles.
Smart Images
Figure CN223077889U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of vehicle leaf spring testing, and particularly relates to a static stiffness test tooling for simulating the structure of a vehicle leaf spring. Background Art
[0002] When conducting the static stiffness test of a vehicle, it is necessary to clamp the vehicle. As shown in a static stiffness test device for a white body structure disclosed in the current patent CN112504693A, it includes a bracket, a first column mechanism, and a second column mechanism; the bracket includes a cross beam and a support frame, and the cross beam is rotatably connected to the support frame; both the first column mechanism and the second column mechanism include a front suspension mounting column and a rear suspension mounting column; the front suspension mounting column is arranged on the cross beam, and the front suspension mounting column includes a rod and a base, the base is arranged on the cross beam, and the rod is fixedly connected to the base; the base includes a connecting plate, a first connecting block, and a second connecting block, the first connecting block can rotate or be fixed relative to the connecting plate, the second connecting block can rotate or be fixed relative to the first connecting block, and the rotation axis of the first connecting block is perpendicular to the rotation axis of the second connecting block. Although the above device fixes and supports the vehicle body, it does not simulate the leaf spring of the vehicle, so the accuracy of the static stiffness test results of the vehicle body and the vehicle frame needs to be improved. Content of the Utility Model
[0003] The utility model aims to provide a static stiffness test tooling for simulating the structure of a vehicle leaf spring to improve the accuracy of the static stiffness test.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme: A static stiffness test tooling for simulating the structure of a vehicle leaf spring includes a cantilever unit, a front mounting unit, and a rear mounting bracket. The cantilever unit includes a cantilever. The front mounting unit and the rear mounting unit are respectively located at both ends of the cantilever. The front mounting unit includes a transition plate and a front mounting bracket. The transition plate is detachably connected to the cantilever. The front mounting bracket can slide vertically along the transition plate, and the front mounting bracket is detachably connected to the transition plate; the rear mounting bracket is detachably connected to the cantilever.
[0005] The beneficial effects of this scheme are as follows:
[0006] 1. During the static stiffness test, the front end of the cantilever is installed at the position where the front end of the leaf spring should be installed through the front mounting bracket, and the rear end of the cantilever is installed at the position where the rear end of the leaf spring should be installed through the rear mounting bracket. At this time, the cantilever can simulate the leaf spring, making the accuracy of the static stiffness test higher.
[0007] 2. In this solution, the front mounting bracket slides vertically along the transition plate. Without changing the height of the cantilever, changing the height of the connection position between the front mounting bracket and the vehicle can make the position and posture of the cantilever the same as those of the leaf spring mounting position and posture, improving the authenticity of the cantilever simulating the leaf spring and further enhancing the accuracy of the static stiffness test.
[0008] 3. After the front and rear ends of the cantilever in this solution are installed, the cantilever can also be installed on the static stiffness test bench. At this time, the cantilever can also support the vehicle through the front mounting bracket and the rear mounting bracket, while improving the support and fixing effects on the vehicle and further enhancing the accuracy of the static stiffness test.
[0009] Furthermore, the rear mounting bracket is provided with rear mounting holes, and a number of first mounting holes that can be aligned with the rear mounting holes are axially provided on the cantilever.
[0010] The beneficial effect of this solution is that when testing different vehicles, the leaf spring specifications on different vehicles are different, and the connection positions between the vehicle and the leaf spring also vary. In this solution, aligning the rear mounting holes with different first mounting holes can quickly adjust the position of the rear mounting bracket along the axis of the cantilever. At this time, only by passing a bolt or a positioning pin through the aligned rear mounting holes and first mounting holes can the rear mounting bracket be quickly positioned, so that the rear mounting bracket can be quickly moved to the connection position between the vehicle and the leaf spring, thereby realizing the quick connection between the rear mounting bracket and the vehicle.
[0011] Furthermore, the transition plate is provided with front mounting holes, and a number of second mounting holes that can be aligned with the front mounting holes are axially provided on the cantilever.
[0012] The beneficial effect of this solution is that similarly, this solution can also quickly adjust the position of the transition plate and quickly position the transition plate. Since the front mounting bracket is connected to the transition plate, adjusting the transition plate can adjust the position of the front mounting bracket, and can also realize the quick connection between the front mounting bracket and the vehicle.
[0013] Furthermore, the front mounting holes are strip-shaped holes.
[0014] The beneficial effect of this solution is that after a threaded rod-shaped part such as a bolt or a screw rod penetrates through the aligned front mounting holes and second mounting holes in this solution, the front mounting bracket can be fixed to the transition plate by tightening with a nut. When it is necessary to adjust the position of the front mounting bracket to ensure the connection between the front mounting bracket and the vehicle, because the bolt can slide along the strip-shaped hole, it is not necessary to completely remove the bolt. Loosening the bolt can slide the front mounting bracket, further improving the connection speed between the front mounting bracket and the vehicle.
[0015] Furthermore, the front mounting bracket is provided with vertical mounting holes, and the vertical mounting holes are strip-shaped holes extending vertically; the transition plate is provided with upper mounting holes aligned with the vertical mounting holes.
[0016] The beneficial effects of this solution are as follows: Similarly, this solution can also slide the front mounting bracket vertically to install it before completely removing the bolt, so as to adjust the height of the front mounting bracket and further improve the connection speed between the front mounting bracket and the vehicle.
[0017] Furthermore, the front mounting bracket includes two mounting blocks, which are respectively located on both sides of the transition plate; vertical mounting holes are provided on both mounting blocks, and the vertical mounting holes on both mounting blocks are aligned with the upper mounting holes.
[0018] The beneficial effects of this solution are as follows: The two mounting blocks are respectively located on both sides of the transition plate. When connecting to the vehicle to be tested, compared with one mounting block, the connection between the two mounting blocks and the vehicle is more stable and even.
[0019] Furthermore, at least one first cushion block and at least one second cushion block are provided between the two mounting blocks and the transition plate. The first cushion block is provided with a first sliding hole, and the second cushion block is provided with a second sliding hole. Both the first sliding hole and the second sliding hole are strip-shaped holes, and the first sliding hole and the second sliding hole are perpendicular.
[0020] The beneficial effects of this solution are as follows: When connecting the mounting block and the transition plate, the bolt connecting the mounting block and the transition plate passes through the first sliding hole and the second sliding hole at the same time. Since the first sliding hole and the second sliding hole are perpendicular, the position where the bolt passes through is the intersection of the first sliding hole and the second sliding hole. This setting method can prevent the mounting block from rotating, so as to ensure that the mounting block can be connected to the rear mounting point of the leaf spring on the vehicle.
[0021] Furthermore, the mounting block includes a fixed part and a connecting part that are fixedly connected. The top of the connecting part is higher than the fixed part, and the distance between the side of the fixed part close to the transition plate and the transition plate is less than the distance between the side of the connecting part close to the transition plate and the transition plate.
[0022] The beneficial effects of this solution are as follows: There is a gap between the two connecting parts in this solution, which is convenient for articulation with the vehicle.
[0023] Furthermore, the cantilever unit further includes a mounting base, and the mounting base is fixed to the middle of the cantilever.
[0024] The beneficial effects of this solution are as follows: When connecting the cantilever to the static stiffness test bench, the mounting base can be attached to the static stiffness test bench, thereby improving the connection strength. Description of the Drawings
[0025] Figure 1 is a perspective view of Embodiment 1 of the present invention;
[0026] Figure 2 is Figure 1 the perspective view of the front mounting unit in
[0027] Figure 3 It is a perspective view of the front mounting unit in Embodiment 2 of the present utility model;
[0028] Figure 4 is Figure 3 right view of. Detailed implementation manners
[0029] The following is a further detailed description through specific implementation manners:
[0030] The reference numerals in the accompanying drawings of the specification include: cantilever 1, first mounting hole 11, second mounting hole 12, base 13, rear mounting bracket 2, rear mounting hole 21, transition plate 3, front mounting hole 31, upper mounting hole 32, mounting block 4, fixing portion 41, connecting portion 42, vertical mounting hole 5, first cushion block 6, first sliding hole 61, second cushion block 7, second sliding hole 71.
[0031] Embodiment 1
[0032] Embodiment 1 is basically as Figure 1 and Figure 2 shown, a static stiffness test tooling simulating the leaf spring structure of a vehicle, including a cantilever unit, a front mounting unit and a rear mounting bracket 2. The cantilever unit includes a cantilever 1 and a mounting base 13. The cantilever 1 in this embodiment is plate-shaped, and the mounting base 13 is welded to the middle of the cantilever 1, and the bottom of the mounting base 13 is located below the cantilever 1.
[0033] The rear mounting bracket 2 is located at the left end of the cantilever 1. The top of the rear mounting bracket 2 is higher than the top of the cantilever 1. The lower part of the rear mounting bracket 2 is in an inverted U shape, and the lower part of the rear mounting bracket 2 is slidably matched with the cantilever 1. The lower part of the rear mounting bracket 2 is provided with a rear mounting hole 21. The rear mounting hole 21 in this embodiment is a strip-shaped hole extending along the axial direction of the cantilever 1. A plurality of first mounting holes 11 are axially distributed on the left part of the cantilever 1, and when the rear mounting bracket 2 slides axially along the cantilever 1, it can be aligned with any one of the first mounting holes 11.
[0034] The front mounting unit is located at the right end of the cantilever 1. The front mounting unit in this embodiment includes a transition plate 3 and a front mounting bracket. The lower part of the transition plate 3 in this embodiment is also in an inverted U shape and is slidably matched with the cantilever 1. The lower part of the transition plate 3 is provided with a front mounting hole 31, and the front mounting hole 31 is a strip-shaped hole extending along the axial direction of the cantilever 1. A plurality of second mounting holes 12 are axially distributed on the right part of the cantilever 1, and when the transition plate 3 slides axially along the cantilever 1, it can be aligned with any one of the second mounting holes 12.
[0035] The front mounting bracket in this embodiment includes two mounting blocks 4 which are respectively located on the front and rear sides of the transition plate 3 and are symmetrically arranged along the transition plate 3. Taking the rear mounting block 4 as an example, the mounting block 4 includes an integrally formed fixing part 41 and a connecting part 42. The thickness of the fixing part 41 is greater than that of the connecting part 42, and the front side wall of the fixing part 41 is closer to the transition plate 3 than the front side wall of the connecting part 42, that is, the mounting block 4 is L-shaped. After the two mounting blocks 4 are mounted on the transition plate 3, an installation space is formed between the two connecting parts 42, which is convenient for connecting with the vehicle. A vertical mounting hole 5 is provided on the fixing part 41. Specifically, there are two vertical mounting holes 5 in this embodiment. In actual implementation, the number of vertical mounting holes 5 on the fixing part 41 can also be set to one or more than two. The vertical mounting hole 5 in this embodiment is a strip-shaped hole extending vertically. Two upper mounting hole groups are provided on the transition plate 3 which are respectively aligned with the two vertical mounting holes 5 on the same fixing part 41. Each upper mounting hole group includes two upper mounting holes 32, and the two upper mounting holes 32 in the same group are distributed vertically. In actual implementation, the number of upper mounting hole groups is the same as that of the vertical mounting holes 5 and corresponds to the vertical mounting holes 5 one by one, and the number of upper mounting holes 32 included in each upper mounting hole group can be one or more than two.
[0036] The specific implementation process is as follows:
[0037] Taking the static stiffness test of the vehicle body as an example, before the test, the test tooling in this embodiment is first connected to the vehicle body. During installation, the installation base 13 is connected to the static stiffness test bench through bolts, and the tooling in this embodiment is fixed on the static stiffness test bench.
[0038] Slide the rear mounting bracket 2 along the cantilever 1 until the rear mounting bracket 2 is aligned with the rear mounting point of the leaf spring of the vehicle body. Then, penetrate the aligned rear mounting hole 21 and the first mounting hole 11 with bolts and lock them with nuts to connect the rear mounting bracket 2 with the cantilever 1. Finally, connect the rear mounting bracket 2 with the rear mounting point of the leaf spring.
[0039] Slide the transition plate 3 along the cantilever 1 until the mounting block 4 moves above or below the front mounting point of the leaf spring of the vehicle body. Then, lock the transition plate 3 and the cantilever 1 in the same way. Then, slide the mounting block 4 vertically until the mounting block 4 is aligned with the front mounting point of the leaf spring of the vehicle body. Then, lock the two mounting blocks 4 with the transition plate 3. Finally, connect the front mounting bracket with the front mounting point of the leaf spring. At this time, during the static stiffness test, the cantilever 1 simulates the leaf spring structure of the vehicle, making the result of the static stiffness test more accurate.
[0040] Embodiment 2
[0041] On the basis of Embodiment 1, as Figure 3 and Figure 4As shown, there is at least one first cushion block 6 and one second cushion block 7 between the two mounting blocks 4 and the transition plate 3 in this embodiment. Taking the front mounting block 4 as an example, there is one first cushion block 6 and one second cushion block 7 between the front mounting block 4 and the transition plate 3. The thickness of the first cushion block 6 is greater than that of the second cushion block 7. In actual implementation, the thickness of the first cushion block 6 can also be set to be the same as or less than the thickness of the second cushion block 7.
[0042] There are two first sliding holes 61 on the first cushion block 6, and two second sliding holes 71 on the second cushion block 7. Specifically, the first sliding holes 61 and the second sliding holes 71 in this embodiment are both strip-shaped holes. The first sliding holes 61 extend in the horizontal direction, and the second sliding holes 71 extend in the vertical direction. The four upper mounting holes 32 in this embodiment are located at the four vertices of a square, so that any one of the upper mounting holes 32 can be aligned with a first sliding hole 61, a second sliding hole 71 and a vertical mounting hole 5 at the same time, ensuring that bolts can pass through the aligned upper mounting hole 32, first sliding hole 61, second sliding hole 71 and vertical mounting hole 5 to lock the transition plate 3, first cushion block 6, second cushion block 7 and mounting block 4.
[0043] The above are only the embodiments of the present invention. Common general technical solutions and / or characteristics in the solutions are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners in the description can be used to interpret the content of the claims.
Claims
1. A static stiffness test tooling simulating the structure of a vehicle leaf spring, comprising a cantilever unit, a front mounting unit and a rear mounting bracket. The cantilever unit includes a cantilever, and the front mounting unit and the rear mounting unit are respectively located at two ends of the cantilever. It is characterized in that: The front mounting unit includes a transition plate and a front mounting bracket. The transition plate is detachably connected to the cantilever, and the front mounting bracket can slide vertically along the transition plate and is detachably connected to the transition plate; the rear mounting bracket is detachably connected to the cantilever.
2. The static stiffness test tooling for simulating the vehicle leaf spring structure according to claim 1, characterized in that: The rear mounting bracket is provided with rear mounting holes, and a plurality of first mounting holes capable of aligning with the rear mounting holes are axially provided on the cantilever.
3. The static stiffness test tooling for simulating the structure of a vehicle leaf spring according to claim 1, wherein: The transition plate is provided with front mounting holes, and a plurality of second mounting holes capable of aligning with the front mounting holes are axially provided on the cantilever.
4. A static stiffness test tool for simulating a vehicle leaf spring structure according to claim 3, characterized in that: The front mounting holes are strip-shaped holes.
5. A static stiffness test tooling for simulating the structure of a vehicle leaf spring according to any one of claims 1, 3, and 4, characterized in that: The front mounting bracket is provided with vertical mounting holes, and the vertical mounting holes are strip-shaped holes extending vertically; the transition plate is provided with upper mounting holes aligned with the vertical mounting holes.
6. The static stiffness test tooling for simulating the vehicle leaf spring structure according to claim 5, characterized in that: The front mounting bracket includes two mounting blocks which are respectively located on both sides of the transition plate; vertical mounting holes are provided on both mounting blocks, and the vertical mounting holes on both mounting blocks are aligned with the upper mounting holes.
7. The static stiffness test tooling for simulating the structure of a vehicle leaf spring according to claim 6, characterized in that: At least one first cushion block and at least one second cushion block are provided between the two mounting blocks and the transition plate. The first cushion block is provided with a first sliding hole, and the second cushion block is provided with a second sliding hole. Both the first sliding hole and the second sliding hole are strip-shaped holes, and the first sliding hole and the second sliding hole are perpendicular.
8. The static stiffness test tooling for simulating the structure of a vehicle leaf spring according to claim 6, wherein: The mounting block includes a fixed part and a connecting part which are fixedly connected. The top of the connecting part is higher than the fixed part, and the distance between the side surface of the fixed part close to the transition plate and the transition plate is less than the distance between the side surface of the connecting part close to the transition plate and the transition plate.
9. The static stiffness test tooling for simulating the structure of a vehicle leaf spring according to claim 1, characterized in that: The cantilever unit further includes a mounting base which is fixed to the middle of the cantilever.