Auxiliary frame system fatigue test fixing tool

Abstract

The utility model relates to the technical field of automobile part test tools, and provides an auxiliary frame system fatigue test fixing tool, which comprises at least one group of mounting racks, each mounting rack comprises an upright post and a bearing transverse plate, and two ends of each bearing transverse plate are respectively and fixedly connected with the upright post; a shock absorber connecting assembly is installed on the force bearing transverse plate, and an auxiliary frame fixing plate is installed on the stand column. The steering knuckle limiting assembly is arranged on the side of the mounting frame, the steering knuckle limiting assembly comprises a steering knuckle bearing flange and a connecting rod, and the steering knuckle bearing flange is connected with the connecting rod. According to the utility model, the overall test of the auxiliary frame is facilitated, the accuracy and practicability of the test result are better, and the test cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component test fixtures, in particular to a fatigue test fixing fixture for a subframe system. Background Art

[0002] The subframe can be regarded as the skeleton of the front and rear axles, and is a component of the front and rear axles. It is not a complete frame, but a bracket that supports the front and rear axles and suspension, so that the axles and suspension are connected to the "main frame" through it, and is customarily called the "subframe". The function of the subframe is to block vibration and noise and reduce its direct entry into the car compartment, so it is mostly found in cars and SUVs, and some cars also install subframes for engines. It is very important for the performance of the car, so it needs to be fatigue tested.

[0003] Applied to the chassis small system test in the automobile industry (including subframe, control arm, steering knuckle, shock absorber, connecting rod, stabilizer bar, etc.), fatigue test is carried out according to the actual vehicle assembly. In the existing technology, due to the difficulty of installing the subframe system, the subframe and corresponding accessories such as various connecting arms, shock absorbers, stabilizer bars, etc. are generally tested separately for fatigue, which greatly increases the development cycle and test cost. There is a lack of overall test of the subframe, which is different from the actual use conditions. Utility Model Content

[0004] The utility model aims to provide a fixing tool for fatigue test of a sub-frame system, which is convenient for overall test, and the test is closer to the actual use condition, thus greatly reducing the test cost.

[0005] The embodiment of the utility model is realized through the following technical scheme: a sub-frame system fatigue test fixing tool, comprising at least one group of mounting frames, the mounting frames comprising columns and load-bearing cross plates, the two ends of the load-bearing cross plates are respectively fixedly connected to the columns; a shock absorber connecting assembly is installed on the load-bearing cross plates, and a sub-frame fixing plate is installed on the columns; a steering knuckle limiting assembly, the steering knuckle limiting assembly is arranged on the side of the mounting frame, the steering knuckle limiting assembly comprises a steering knuckle bearing flange and a connecting rod, the steering knuckle bearing flange is connected to the connecting rod.

[0006] Preferably, the steering knuckle limiting assembly further includes a pull rod and a support frame, one end of the pull rod is connected to the connecting rod, and the other end of the pull rod is connected to the support frame.

[0007] Preferably, the pull rod and the support frame are connected by a ball-joint structure, and the pull rod and the connecting rod are arranged vertically.

[0008] Preferably, it also includes a U-shaped arm bushing fixing seat, and the U-shaped arm bushing fixing seat is arranged on the lower side of the shock absorber connecting assembly.

[0009] Preferably, the mounting frames are provided with two groups arranged side by side, and side panels are connected between the columns of two adjacent groups of the mounting frames, and the side panels are located at the lower side of the load-bearing horizontal plate.

[0010] Preferably, the side plate is an L-shaped structure, one end of the sub-frame body is connected to the side plate, and the other end of the sub-frame body is connected to the sub-frame fixing plate.

[0011] Preferably, a plurality of mounting through holes are arranged at equal intervals on the upright column and the load-bearing horizontal plate.

[0012] Preferably, the columns and the load-bearing cross plates are made of I-beams.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects: compared with the prior art, the utility model simulates the actual use state of the automobile by suspending and fixing the subframe by setting a mounting frame, fixes the shock absorber and the two ends of the lower part of the subframe, and uses a steering knuckle bearing flange to be installed at the steering knuckle to cooperate with the connecting rod support, and the loading system can act on the steering knuckle bearing flange to simulate the overall test, the fatigue test result is more reliable and practical, and the test cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the axle-side structure of a fixture for fatigue testing of a sub-frame system provided in an embodiment of the utility model;

[0016] Figure 2 A top view of a fixture for a fatigue test of a subframe system in the utility model;

[0017] Figure 3 It is a schematic diagram of the structure in which a set of mounting frames and a sub-frame body are fixed in the utility model;

[0018] Figure 4 It is a front view of the fixing fixture for fatigue test of the subframe system in the utility model.

[0019] Icons: 1-mounting frame, 11-column, 111-mounting through hole, 12-load-bearing cross plate, 2-steering knuckle limit assembly, 21-steering knuckle bearing flange, 22-connecting rod, 23-pull rod, 24-support frame, 3-subframe body, 4-side plate, 5-subframe fixing plate, 6-shock absorber connecting assembly, 7-U-arm bushing fixing seat. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0024] Example

[0025] The following is further described in conjunction with specific embodiments. Figure 1-Figure 4As shown, this embodiment is a sub-frame system fatigue test fixture, including at least one set of mounting frames 1, the mounting frames 1 include columns 11 and load-bearing cross plates 12, both ends of the load-bearing cross plates 12 are respectively fixedly connected to the columns 11; a shock absorber connecting assembly 6 is installed on the load-bearing cross plates 12, and a sub-frame fixing plate 5 is installed on the columns 11; a steering knuckle limiting assembly 2, the steering knuckle limiting assembly 2 is arranged on the side of the mounting frame 1, the steering knuckle limiting assembly 2 includes a steering knuckle bearing flange 21 and a connecting rod 22, and the steering knuckle bearing flange 21 is connected to the connecting rod 22. Specifically, the utility model can conveniently suspend the sub-frame by designing the mounting frame 1, one end of the shock absorber of the sub-frame is fixedly connected to the shock absorber connecting assembly 6, the sub-frame fixing plate 5 is connected to the lower end part of the sub-frame to prevent shaking, and then the steering knuckle bearing flange 21 is installed at the steering knuckle to cooperate with the connecting rod 22 to support it, and then the loading system can act on the steering knuckle to perform a loading simulation test in the XYZ direction. The entire device realizes the fatigue test of the sub-frame system, reduces the test cost, and improves the reliability of the test result.

[0026] The entire tooling can not only examine the fatigue test of the subframe according to the actual vehicle stress mode, but also examine the related fatigue of each accessory, which greatly reduces the test cost and shortens the development cycle.

[0027] In addition, it is worth mentioning that the steering knuckle limit assembly 2 in this embodiment also includes a pull rod 23 and a support frame 24, one end of the pull rod 23 is connected to the connecting rod 22, and the other end thereof is connected to the support frame 24, the pull rod 23 and the support frame 24 are connected by a ball joint structure, and the pull rod 23 and the connecting rod 22 are arranged vertically; specifically, when the steering knuckle is loaded, because the connecting rod 22 and the pull rod 23 are connected, one end of the pull rod 23 is connected to the support frame 24 by a ball joint, and then during the test, the movement of the subframe will also drive the pull rod 23 to rotate around the support frame 24.

[0028] This embodiment also includes a U-shaped arm bushing fixing seat 7, which is arranged on the lower side of the shock absorber connecting assembly 6; specifically, the U-shaped arm bushing fixing seat 7 is provided with two seats located on both sides of the shock absorber, and its installation position is set to adapt to the U-shaped arm.

[0029] In order to test both the left and right parts of the subframe, two groups of mounting frames 1 are arranged side by side, and side plates 4 are connected between the columns 11 of two adjacent groups of mounting frames 1. The side plates 4 are located on the lower side of the load-bearing cross plate 12.

[0030] Reference Figure 3 As shown, the side plate 4 in this embodiment is an L-shaped structure, one end of the sub-frame body 3 is connected to the bottom of the side plate 4 by inserting screws, and the other end of the sub-frame body 3 is connected to the sub-frame fixing plate 5.

[0031] In order to facilitate the testing of different sub-frames, a plurality of mounting through holes 111 are arranged at equal intervals on the upright column 11 and the load-bearing cross plate 12, so that the positions of the movable shock absorber connecting assembly 6, the sub-frame fixing plate 5, etc. can be adjusted.

[0032] Reference Figure 1 As shown, the columns 11 and the load-bearing cross plates 12 in this embodiment are made of I-beams, so that they have higher supporting strength.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixture for fatigue test of a subframe system, characterized by: It comprises at least one set of mounting frames (1), wherein the mounting frames (1) comprise upright posts (11) and load-bearing transverse plates (12), and the two ends of the load-bearing transverse plates (12) are respectively fixedly connected to the upright posts (11); A shock absorber connection assembly (6) is installed on the load-bearing transverse plate (12), and a subframe fixing plate (5) is installed on the upright column (11); A steering knuckle limiting assembly (2), wherein the steering knuckle limiting assembly (2) is arranged on the side of the mounting frame (1), and the steering knuckle limiting assembly (2) comprises a steering knuckle bearing flange (21) and a connecting rod (22), wherein the steering knuckle bearing flange (21) is connected to the connecting rod (22).

2. The subframe system fatigue test fixture according to claim 1, characterized in that: The steering knuckle limiting assembly (2) further comprises a pull rod (23) and a support frame (24); one end of the pull rod (23) is connected to the connecting rod (22), and the other end of the pull rod (23) is connected to the support frame (24).

3. The subframe system fatigue test fixture according to claim 2, characterized in that: The pull rod (23) and the support frame (24) are connected by a ball-jointed structure, and the pull rod (23) and the connecting rod (22) are arranged vertically.

4. The subframe system fatigue test fixture according to claim 1, characterized in that: It also comprises a U-shaped arm bushing fixing seat (7), wherein the U-shaped arm bushing fixing seat (7) is arranged on the lower side of the shock absorber connecting assembly (6).

5. The subframe system fatigue test fixture according to claim 1, characterized in that: The mounting frame (1) is provided with two groups arranged side by side, and side panels (4) are connected between the upright posts (11) of two adjacent groups of the mounting frames (1), and the side panels (4) are located on the lower side of the load-bearing transverse plate (12).

6. The subframe system fatigue test fixture according to claim 5, characterized in that: The side plate (4) is an L-shaped structure; one end of the sub-frame body (3) is connected to the side plate (4); and the other end of the sub-frame body (3) is connected to the sub-frame fixing plate (5).

7. The subframe system fatigue test fixture according to claim 1, characterized in that: A plurality of mounting through holes (111) are arranged at equal intervals on the upright column (11) and the load-bearing horizontal plate (12).

8. The subframe system fatigue test fixture according to any one of claims 1 to 7, characterized in that: The upright column (11) and the load-bearing horizontal plate (12) are made of I-beams.

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