Tool clamp for quarter suspension fatigue testing machine

Abstract

The utility model discloses a work fixture for a quarter suspension fatigue testing machine, which comprises a base and a suspension testing device connected on the base, the suspension testing device is connected with a loading device, the loading device comprises a loading plate and a driving connecting rod, a bearing is arranged between the loading plate and the driving connecting rod, and the loading plate is connected with the driving connecting rod. The suspension testing device comprises a lower fork arm and a steering knuckle connected with the lower fork arm, the lower fork arm comprises a first supporting arm and a second supporting arm, the second supporting arm and the first supporting arm are arranged at a preset angle, the steering knuckle is connected with the loading plate, and the steering knuckle is connected with a steering pull rod. According to the utility model, loading in multiple directions can be stably realized, so that the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a quarter suspension fatigue testing machine, in particular to a tooling fixture for a quarter suspension fatigue testing machine. Background Art

[0002] The quarter suspension testing machine is a special testing equipment used for multi-degree-of-freedom durability test of a quarter suspension of a passenger car. This testing equipment can simulate the impact force transmitted from the road surface bumps to the frame or body to the wheel and the frame, measure the force borne by the vehicle suspension under simulated actual working conditions, and at the same time can simulate the influence of wheel steering on the suspension spring and shock absorber for loading. The quarter suspension testing machine usually consists of eight parts: a main machine, a hydraulic system, a cooling system, a pneumatic system, a high and low temperature environment system, an electric control system, a tooling fixture and a transfer trolley. Among them, the tooling fixture plays an important role during the test. The existing tooling fixtures often have poor stability when changing the loading direction, which is likely to cause errors in the test results. Content of the Utility Model

[0003] In view of the above deficiencies existing currently, the utility model provides a tooling fixture for a quarter suspension fatigue testing machine, which can smoothly achieve the loading direction of multiple degrees of freedom and make the test results more accurate.

[0004] To achieve the above object, the embodiments of the utility model adopt the following technical solutions:

[0005] A tooling fixture for a quarter suspension fatigue testing machine, comprising a base and a suspension test device connected to the base. The suspension test device is connected with a loading device. The loading device includes a loading plate and a driving connecting rod. A bearing is arranged between the loading plate and the driving connecting rod. The suspension test device includes a lower control arm and a steering knuckle connected to the lower control arm. The lower control arm includes a first branch arm and a second branch arm. The second branch arm is arranged at a predetermined angle with respect to the first branch arm. The steering knuckle is connected to the loading plate, and the steering knuckle is connected with a steering tie rod.

[0006] According to one aspect of the utility model, the first branch arm is connected with a first fixing seat, and the first fixing seat is rotatably connected with the first branch arm. The second branch arm is connected with a second fixing seat, and the second fixing seat is provided with a connecting portion connected with the second branch arm.

[0007] According to one aspect of the utility model, a rotating member is arranged on one side of the connecting portion, and the rotating member is rotatably connected with the second fixing seat. A fixing member connected with the second fixing seat is arranged on the other side of the connecting portion.

[0008] According to one aspect of the present utility model, the steering tie rod includes a horizontal loading rod, a first ball head rod, and a first tie rod. The ball head end of the first ball head rod is rotatably connected to the horizontal loading rod, the non-ball head end of the first ball head rod is connected to the first tie rod, a ball socket is provided on the first tie rod, and a second ball head rod rotatably connected to the ball socket is provided in the ball socket.

[0009] According to one aspect of the present utility model, the suspension test device further includes an upper fork arm. One end of the steering knuckle is connected to the upper fork arm, and the other end of the steering knuckle is connected to the lower fork arm.

[0010] According to one aspect of the present utility model, a shock absorber is further provided on the base. One end of the shock absorber passes through the middle of the upper fork arm and is connected to the lower fork arm.

[0011] According to one aspect of the present utility model, a mounting seat is provided between the shock absorber and the base.

[0012] According to one aspect of the present utility model, the mounting seat includes: a first mounting plate, a second mounting plate, and the second mounting plate is perpendicular to the first mounting plate; a support plate, the first end of the support plate is perpendicular to the first mounting plate, and the second end of the support plate is perpendicular to the second mounting plate.

[0013] According to one aspect of the present utility model, a weight reduction hole is provided on the support plate.

[0014] According to one aspect of the present utility model, the support plate includes at least two support plates arranged in parallel on the first mounting plate.

[0015] According to one aspect of the present utility model, a support chamfer is provided at the corner of the lower side of the support plate.

[0016] According to one aspect of the present utility model, a positioning plate is provided between the loading plate and the steering knuckle.

[0017] Advantages of the implementation of the present utility model: The second arm and the first arm are arranged at a predetermined angle, and the rotation is more stable; by adjusting the loading device with the steering tie rod, the present utility model can not only complete vertical or horizontal action loading, but also truly simulate and reproduce the driving conditions of the suspension on the real road surface, so that the driving test of the steering knuckle in multiple degrees of freedom can be easily realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural view of the present utility model;

[0020] Figure 2 is a schematic structural view of the steering tie rod of the present utility model;

[0021] Figure 3 is a schematic structural view of the mounting seat of the present utility model;

[0022] Figure 4 is a schematic structural view of the lower fork arm of the present utility model.

[0023] The names corresponding to the serial numbers in the figure are as follows:

[0024] 1. Base; 2. Suspension test device; 21. Steering knuckle; 22. Upper fork arm; 23. Lower fork arm; 231. First arm; 232. Second arm; 3. Loading device; 31. Loading plate; 32. Driving connecting rod; 33. Bearing; 34. Positioning plate; 4. Steering tie rod; 41. Horizontal loading rod; 42. First ball head rod; 43. First tie rod; 44. Ball socket; 45. Second ball head rod; 5. Shock absorber; 6. Mounting seat; 61. First mounting plate; 62. Second mounting plate; 63. Support plate; 631. Weight reduction hole; 632. Support chamfer; 7. First fixing seat; 8. Second fixing seat; 9. Connecting part; 91. Rotating part; 92. Fixing part. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "rear", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0026] Embodiment 1:

[0027] As Figures 1 to 4As shown in the figure, a tooling fixture for a quarter suspension fatigue testing machine includes a base and a suspension testing device connected to the base. The suspension testing device is connected to a loading device. The loading device includes a loading plate and a driving connecting rod. There is a bearing between the loading plate and the driving connecting rod. The suspension testing device is connected to a loading device. The loading device includes a loading plate and a driving connecting rod. There is a bearing between the loading plate and the driving connecting rod. The suspension testing device includes a lower fork arm and a steering knuckle connected to the lower fork arm. The lower fork arm includes a first branch arm and a second branch arm. The second branch arm is arranged at a predetermined angle with respect to the first branch arm. The steering knuckle is connected to the loading plate, and the steering knuckle is connected to a steering tie rod. By arranging the second branch arm at a predetermined angle with respect to the first branch arm, the force on the upper fork arm is more uniform when it rotates, making it more stable for the steering tie rod to drive the steering knuckle to change the degree of freedom, thereby realizing the switching of the loading device to the vertical loading or horizontal loading direction.

[0028] The predetermined angle is not greater than 60 degrees.

[0029] The first branch arm is connected to a first fixing seat, and the first fixing seat is rotatably connected to the first branch arm. The second branch arm is connected to a second fixing seat, and the second fixing seat is provided with a connecting portion connected to the second branch arm.

[0030] The root of the first branch arm is pin-connected to the first fixing seat. This facilitates the rotation of the first branch arm.

[0031] The root of the second branch arm is rotatably connected to the second fixing seat through the connecting portion. There is a rotating member on one side of the connecting portion, and the rotating member is rotatably connected to the second fixing seat. There is a fixing member connected to the second fixing seat on the other side of the connecting portion. This can better adapt to the change of the loading direction through the connecting portion.

[0032] The steering tie rod includes a horizontal loading rod, a first ball head rod, and a first tie rod. The ball head end of the first ball head rod is rotatably connected to the horizontal loading rod. The non-ball head end of the first ball head rod is connected to the first tie rod. There is a ball socket on the first tie rod, and a second ball head rod rotatably connected to the ball socket is arranged in the ball socket. By driving the steering tie rod, the steering knuckle changes the degree of freedom, thereby realizing the switching of the loading device to the vertical loading or horizontal loading direction. During use, drive the steering tie rod, and the second ball head rod cooperates with the steering knuckle to adjust the direction of the steering knuckle. The loading device is driven by the steering knuckle to switch to the vertical loading or horizontal loading direction. And the rotation angles of the first ball head rod and the second ball head rod are more flexible, making the switching of the loading direction smoother and more fluent.

[0033] In practical applications, a shock absorber is also provided on the base. One end of the shock absorber passes through the middle of the upper fork arm and is connected to the lower fork arm. The shock absorber reduces vibration and improves the stability of the equipment.

[0034] In practical applications, a mounting seat is provided between the shock absorber and the base. This facilitates the installation of the shock absorber.

[0035] In this embodiment, several threaded holes are provided on the mounting base, which facilitates installation and fixation.

[0036] In practical applications, the mounting base includes: a first mounting plate, a second mounting plate, and the second mounting plate is perpendicular to the first mounting plate; a support plate, the first end of the support plate is perpendicular to the first mounting plate, and the second end of the support plate is perpendicular to the second mounting plate.

[0037] In practical applications, a weight-reducing hole is provided on the support plate. The weight of the component is reduced through the weight-reducing hole and the load-bearing force is optimized.

[0038] In practical applications, the support plate includes at least two support plates arranged in parallel on the first mounting plate. The load-bearing force is strengthened by multiple support plates.

[0039] In practical applications, a support chamfer is provided at the corner of the lower side of the support plate. The force-bearing surface is increased through the support chamfer, the force is more uniform, and the structure is more stable.

[0040] In practical applications, the shock absorber is an air spring shock absorber, which can more accurately simulate and reproduce the driving conditions of the suspension on a real road surface.

[0041] In practical applications, the bearing is a rod end ball bearing. The rod end ball bearing rotates more flexibly and can adapt to the switching of multiple loading directions.

[0042] In practical applications, the loading plate and the bearing are connected by a pin shaft. The stability and reliability of the connection between the loading plate and the bearing can be ensured through the pin shaft connection.

[0043] In practical applications, a positioning plate is provided between the loading plate and the steering knuckle. Through the positioning plate, the error caused by the position deviation of the components can be reduced.

[0044] Embodiment 2:

[0045] As Figures 1 to 4 shown, a tooling fixture for a quarter-suspension fatigue testing machine includes a base and a suspension test device connected to the base. The suspension test device is connected with a loading device. The loading device includes a loading plate and a driving connecting rod. A bearing is provided between the loading plate and the driving connecting rod. The suspension test device is connected with a loading device. The loading device includes a loading plate and a driving connecting rod. A bearing is provided between the loading plate and the driving connecting rod. The suspension test device includes a lower fork arm and a steering knuckle connected to the lower fork arm. A positioning plate is provided between the loading plate and the steering knuckle. The lower fork arm includes a first arm and a second arm. The second arm is arranged at a predetermined angle with respect to the first arm. The steering knuckle is connected to the loading plate, and the steering knuckle is connected with a steering tie rod. When in use, the steering tie rod is driven to adjust the direction of the steering knuckle, and the loading device is driven by the steering knuckle to switch to the vertical loading or horizontal loading direction. Compared with Embodiment 1, through the positioning plate, the error caused by the position deviation of the components can be reduced.

[0046] In practical applications, the first arm is connected to a first fixed seat, and the first fixed seat is rotatably connected to the first arm. The second arm is connected to a second fixed seat, and the second fixed seat is provided with a connecting portion connected to the second arm.

[0047] In practical applications, the root of the first arm is pin-connected to the first fixed seat, facilitating the rotation of the first arm.

[0048] In practical applications, the root of the second arm is rotatably connected to the second fixed seat through the connecting portion. A rotating member is provided on one side of the connecting portion, and the rotating member is rotatably connected to the second fixed seat. A fixing member connected to the second fixed seat is provided on the other side of the connecting portion. The connecting portion can better adapt to the change of the loading direction.

[0049] In practical applications, the steering tie rod includes a horizontal loading rod, a first ball head rod, and a first tie rod. The ball head end of the first ball head rod is rotatably connected to the horizontal loading rod. The non-ball head end of the first ball head rod is connected to the first tie rod. A ball socket is provided on the first tie rod, and a second ball head rod rotatably connected to the ball socket is provided in the ball socket. The second ball head rod cooperates with the steering knuckle to realize the change of the loading direction of the loading device.

[0050] In practical applications, a shock absorber is further provided on the base. One end of the shock absorber passes through the middle of the upper fork arm and is connected to the lower fork arm. The shock absorber reduces vibrations and improves the stability of the equipment.

[0051] In practical applications, a mounting seat is provided between the shock absorber and the base, facilitating the installation of the shock absorber.

[0052] In this embodiment, a plurality of threaded holes are provided on the mounting seat, facilitating installation and fixation.

[0053] In practical applications, the mounting seat includes: a first mounting plate; a second mounting plate perpendicular to the first mounting plate; and a support plate, the first end of the support plate being perpendicular to the first mounting plate and the second end of the support plate being perpendicular to the second mounting plate.

[0054] In practical applications, a weight-reducing hole is provided on the support plate, reducing the weight of the component and optimizing the bearing force through the weight-reducing hole.

[0055] In practical applications, the support plate includes at least two support plates arranged in parallel on the first mounting plate, strengthening the bearing force through multiple support plates.

[0056] In practical applications, a support chamfer is provided at the corner of the lower side of the support plate, increasing the stress surface, making the force more uniform, and making the structure more stable through the support chamfer.

[0057] In practical applications, the shock absorber is an air spring shock absorber, which can more accurately simulate and reproduce the driving conditions of the suspension on a real road surface.

[0058] In practical applications, the bearing is a rod end ball bearing. The rod end ball bearing rotates more flexibly and can adapt to the switching of various loading directions.

[0059] In practical applications, the loading plate and the bearing are connected by a pin shaft. Connecting through the pin shaft can ensure the stability and reliability of the connection between the loading plate and the bearing.

[0060] Embodiment Three:

[0061] As Figures 1 to 4 shown, a tooling fixture for a quarter suspension fatigue testing machine includes a base and a suspension test device connected to the base. The suspension test device is connected with a loading device. The loading device includes a loading plate and a driving connecting rod. A bearing is provided between the loading plate and the driving connecting rod. The suspension test device includes a steering knuckle. The steering knuckle is connected to the loading plate. The steering knuckle is connected with a steering tie rod. The suspension test device further includes an upper control arm and a lower control arm. One end of the steering knuckle is connected to the upper control arm, and the other end of the steering knuckle is connected to the lower control arm. When in use, drive the steering tie rod to adjust the direction of the steering knuckle, and the loading device is driven by the steering knuckle to switch to the vertical loading or horizontal loading direction. The rotation angles of the first ball head rod and the second ball head rod are more flexible, making the switching of the loading direction smoother and more stable. Compared with the embodiment, the present utility model is more stable and reliable through the upper control arm and the lower control arm.

[0062] In practical applications, the steering tie rod includes a horizontal loading rod, a first ball head rod and a first tie rod. The ball head end of the first ball head rod is rotatably connected to the horizontal loading rod. The non-ball head end of the first ball head rod is connected to the first tie rod. A ball socket is provided on the first tie rod, and a second ball head rod rotatably connected to the ball socket is provided in the ball socket. The second ball head rod cooperates with the steering knuckle to realize the change of the loading direction of the loading device.

[0063] In practical applications, the first arm is connected with a first fixing seat, and the first fixing seat is rotatably connected to the first arm. The second arm is connected with a second fixing seat, and the second fixing seat is provided with a connecting portion connected to the second arm.

[0064] In practical applications, the root of the first arm is connected to the first fixing seat by a pin shaft. Facilitating the rotation of the first arm.

[0065] In practical applications, the root of the second arm is rotatably connected to the second fixing seat through the connecting portion. A rotating member is provided on one side of the connecting portion, and the rotating member is rotatably connected to the second fixing seat. A fixing member connected to the second fixing seat is provided on the other side of the connecting portion. Better adapting to the change of the loading direction through the connecting portion.

[0066] In practical applications, a shock absorber is further provided on the base. One end of the shock absorber passes through the middle of the upper control arm and is connected to the lower control arm. Slowing down the vibration through the shock absorber and improving the stability of the equipment.

[0067] In practical applications, a mounting seat is provided between the shock absorber and the base, which facilitates the installation of the shock absorber.

[0068] In this embodiment, a number of threaded holes are provided on the mounting seat, which facilitates installation and fixation.

[0069] In practical applications, the mounting seat includes: a first mounting plate; a second mounting plate, which is perpendicular to the first mounting plate; and a support plate, the first end of the support plate is perpendicular to the first mounting plate, and the second end of the support plate is perpendicular to the second mounting plate.

[0070] In practical applications, weight-reducing holes are provided on the support plate. The weight of the component is reduced through the weight-reducing holes and the bearing force is optimized.

[0071] In practical applications, the support plate includes at least two support plates arranged in parallel on the first mounting plate. The bearing force is strengthened by multiple support plates.

[0072] In practical applications, support chamfers are provided at the corners on the lower side of the support plate. The stress surface is increased through the support chamfers, the force is more uniform, and the structure is more stable.

[0073] In practical applications, the shock absorber is an air spring shock absorber, which can more accurately simulate and reproduce the driving conditions of the suspension on real roads.

[0074] In practical applications, the bearing is a rod end spherical bearing. The rod end spherical bearing rotates more flexibly and can adapt to the switching of multiple loading directions.

[0075] In practical applications, the loading plate and the bearing are connected by a pin shaft. The stability and reliability of the connection between the loading plate and the bearing can be ensured through the connection by the pin shaft.

[0076] The above is only the specific implementation manner of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by this utility model should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model shall be subject to the protection scope of the claims.

Claims

1. A fixture for a quarter suspension fatigue testing machine, comprising a base (1) and a suspension testing device (2) connected to the base (1), characterized in that: The suspension test device (2) is connected to a loading device (3), the loading device (3) comprises a loading plate (31) and a driving connecting rod (32), a bearing (33) is provided between the loading plate (31) and the driving connecting rod (32), the suspension test device (2) comprises a lower fork arm and a steering knuckle (21) connected to the lower fork arm, the lower fork arm comprises a first support arm (231) and a second support arm (232), the second support arm (232) and the first support arm (231) are arranged at a predetermined angle, the steering knuckle (21) is connected to the loading plate (31), and the steering knuckle (21) is connected to a steering tie rod (4).

2. A fixture for a quarter suspension fatigue testing machine according to claim 1, characterized in that: The first support arm (231) is connected to a first fixed seat (7), and the first fixed seat (7) is rotatably connected to the first support arm (231); the second support arm (232) is connected to a second fixed seat (8), and the second fixed seat (8) is provided with a connecting portion rotatably connected to the second support arm (232).

3. A fixture for a quarter suspension fatigue testing machine according to claim 2, characterized in that: A rotating member (91) is provided on one side of the connecting portion (9), and the rotating member (91) is rotatably connected to the second fixing seat (8). A fixing member (92) connected to the second fixing seat (8) is provided on the other side of the connecting portion (9).

4. A fixture for a quarter suspension fatigue testing machine according to claim 1, characterized in that: The steering rod (4) comprises a horizontal loading rod (41), a first ball head rod (42) and a first pull rod (43); the ball head end of the first ball head rod (42) is rotatably connected to the horizontal loading rod (41); the non-ball head end of the first ball head rod (42) is connected to the first pull rod (43); a ball socket (44) is provided on the first pull rod (43); a second ball head rod (45) rotatably connected to the ball socket (44) is provided in the ball socket (44).

5. The fixture for a quarter suspension fatigue testing machine according to claim 1, characterized in that: The suspension test device (2) further comprises an upper fork arm (22), one end of the steering knuckle (21) is connected to the upper fork arm (22), and the other end of the steering knuckle (21) is connected to the lower fork arm (23).

6. A fixture for a quarter suspension fatigue testing machine according to claim 1, characterized in that: A shock absorber (5) is also provided on the base (1), and one end of the shock absorber (5) passes through the middle of the upper fork arm (22) and is connected to the lower fork arm (23).

7. A fixture for a quarter suspension fatigue testing machine according to claim 6, characterized in that: A mounting seat (6) is provided between the shock absorber (5) and the base (1).

8. A fixture for a quarter suspension fatigue testing machine according to claim 7, characterized in that: The mounting seat (6) comprises: a first mounting plate (61), a second mounting plate (62), wherein the second mounting plate (62) is perpendicular to the first mounting plate (61); and a support plate (63), wherein a first end of the support plate (63) is perpendicular to the first mounting plate (61), and a second end of the support plate (63) is perpendicular to the second mounting plate (62).

9. A fixture for a quarter suspension fatigue testing machine according to claim 8, characterized in that: A supporting chamfer (632) is provided at the corner of the lower side of the supporting plate (63).

10. A fixture for a quarter suspension fatigue testing machine according to any one of claims 1 to 9, characterized in that: A positioning plate (34) is provided between the loading plate (31) and the steering knuckle (21).

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