Fixing tool for strength endurance test of control arm

Abstract

The utility model discloses a control arm strength endurance test fixing tool which comprises a fixing support arranged on the upper side of a workbench. The first fixing part is detachably arranged on one side of the fixing support, a second fixing part is oppositely arranged on one side of the first fixing part, a space between the first fixing part and the second fixing part is used for fixing a control arm, and a sliding shaft is horizontally arranged on one side of the second fixing part; the first fixing part and the second fixing part are the same in structure and each comprise a fixing block, and a movable limiting block is arranged at the end, close to the control arm, of each fixing block. The sliding sleeve is arranged on the outer side wall of the sliding shaft in a sleeving manner; the sensor is arranged on the side portion of the sliding shaft, and a driving device is arranged at one end of the sensor. The control arm fixing device can solve the problems that when an existing control arm is fixed in an endurance test, the control arm needs to be disassembled repeatedly, so that gaps exist, the stress direction deviates, and the accuracy of the test result is affected.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing fixture technology, specifically a control arm strength and durability testing fixture. Background Technology

[0002] In automobile design and manufacturing, the control arm, as a crucial component of the suspension system, directly impacts the vehicle's safety and reliability through its strength and durability. To ensure the control arm meets expected performance requirements after design and production, strength and durability testing is essential. Current testing methods typically involve a rectangular base plate with two through-hole sliders connected to it. The bolts between the sliders and the base plate are loosened, the control arm bushing end is inserted between the two sliders, and then the two sliders are secured to both ends of the control arm bushing. Bolts are passed through the sliders and the inner tube of the bushing, and the other end is tightened with a nut before connecting to a large base plate at the test site. However, each test setup requires repeated disassembly and adjustment to align the hard point connection line with the cylinder's loading direction, leading to a shift in the force direction. Furthermore, repeated disassembly creates gaps between the test fixture and the control arm bushing end, affecting the final test results. To address these issues, a new type of fixing fixture needs to be designed. Utility Model Content

[0003] This invention provides a fixture for fixing control arms during strength and durability testing, which solves the problems of repeated disassembly and reassembly required for fixing control arms during durability testing, resulting in gaps, deviations in the direction of force, and inaccuracies in test results.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a control arm strength and durability testing fixture, comprising a fixed bracket disposed on the upper side of a workbench; a first fixing part detachably disposed on one side of the fixed bracket, a second fixing part disposed opposite to the first fixing part on one side, the space between the first fixing part and the second fixing part being used to fix the control arm, and a sliding shaft horizontally disposed on one side of the second fixing part; the first fixing part and the second fixing part having the same structure, both including a fixing block connected to the fixed bracket or the sliding shaft, and a movable limiting block disposed at one end of the fixing block near the control arm; a sliding sleeve sleeved on the outer wall of the sliding shaft, the sliding sleeve being slidably connected to the sliding shaft; and a sensor disposed on the side of the sliding shaft, one end of the sensor being provided with a driving device, which simplifies the installation process and reduces adjustment time, significantly improving the efficiency of the control arm strength and durability test.

[0005] Preferably, the fixing block has a slot in the middle and a mounting hole at the bottom of the slot. The fixing block is connected to the fixing bracket or the sliding shaft by a fastener passing through the mounting hole, which facilitates installation.

[0006] Preferably, one side of the slot is provided with a through hole that matches the movable limiting block, and the other side of the slot is provided with a corresponding through hole, which simplifies the processing.

[0007] Preferably, the bottom of the sliding sleeve is provided with a vertical mounting support, which has a simple structure and is easy to install.

[0008] Preferably, the fixed bracket is provided with a number of fixing holes for fixing the fixing block, taking into account the versatility of different models of control arms, so that it can be applied to a variety of types of control arms and improve the applicability of the tooling.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] With its simple structure and convenient operation, it reduces testing errors caused by assembly, improves testing accuracy and efficiency, and simplifies installation by eliminating the need for repeated slider adjustments, thus reducing pre-test preparation work. It ensures a tighter connection between the control arm and the fixture, reducing gaps and improving stability, resulting in more reliable test results. It solves the problem of existing control arms requiring repeated disassembly and reassembly for durability testing, which leads to gaps, force direction shifts, and affects the accuracy of test results. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is an exploded view of the first fixing part of this utility model;

[0013] Figure 3 This is a cross-sectional view of the first fixing part of this utility model.

[0014] Figure label:

[0015] 1. Fixed bracket, 2. First fixed part, 21. Fixed block, 22. Movable limit block, 23. Slot, 24. Mounting hole, 25. Through hole, 26. Through hole, 3. Second fixed part, 4. Control arm, 5. Sliding shaft, 6. Sliding sleeve, 7. Sensor, 8. Drive device, 9. Mounting support, 11. Fixed hole. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] like Figure 1-3 As shown, this utility model addresses the problem that repeated disassembly and reassembly are required for durability testing of existing control arms, leading to gaps, shifts in force direction, and inaccuracies in test results. The present invention provides the following technical solution: a control arm strength and durability testing fixture, comprising a fixing bracket 1 disposed on the upper side of a workbench; a first fixing part 2 detachably disposed on one side of the fixing bracket 1; a second fixing part 3 disposed opposite to the first fixing part 2; the space between the first fixing part 2 and the second fixing part 3 for fixing the control arm 4; and the second fixing part... A sliding shaft 5 is horizontally arranged on one side of the control arm 4; the first fixing part 2 and the second fixing part 3 have the same structure, both including a fixing block 21 connected to the fixing bracket 1 or the sliding shaft 5, and a movable limiting block 22 is provided at one end of the fixing block 21 near the control arm 4; a sliding sleeve 6 is sleeved on the outer wall of the sliding shaft 5, and the sliding sleeve 6 is slidably connected to the sliding shaft 5; a sensor 7 is arranged on the side of the sliding shaft 5, and a driving device 8 is provided at one end of the sensor 7, which simplifies the installation process and reduces the adjustment time, and significantly improves the efficiency of the control arm strength and durability test.

[0018] In this embodiment, as Figure 2 As shown, the fixing block 21 has a slot 23 in the middle and a mounting hole 24 at the bottom of the slot 23. The fixing block 21 is connected to the fixing bracket 1 or the sliding shaft 5 by a fastener passing through the mounting hole 24, which makes installation convenient.

[0019] In this embodiment, as Figure 2 As shown, one side of the slot 23 is provided with a through hole 25 that matches the movable limiting block 22, and the other side of the slot 23 is provided with a through hole 26, which is simple to process.

[0020] In this embodiment, as Figure 1 As shown, the bottom of the sliding sleeve 6 is vertically provided with a mounting support 9, which has a simple structure and is easy to install.

[0021] In this embodiment, as Figure 1 As shown, the fixed bracket 1 is provided with a number of fixing holes 11 for fixing the fixing block 21. This takes into account the versatility of different models of control arms, making it applicable to a variety of control arms and improving the applicability of the tooling.

[0022] In this embodiment, as Figure 1As shown, during the test setup, two fixed blocks 21 and two movable limiting blocks 22 are required. Fasteners pass through the mounting hole 24 and the fixing hole 11 to connect the fixed block 21 and the fixed bracket 1. Another fixed block 21 is fixed to one end of the sliding shaft 5. Visually, the positions of the two fixed blocks 21 are first adjusted to be close to a line. Then, the two ends of the control arm 4 are placed in the slot 23 respectively, paying attention to the loading direction. The two movable limiting blocks 22 are placed in the through hole 25 of the fixed block 21 respectively. Bolts pass through the movable limiting block 22, one end of the control arm 4, and the through hole 26 to fix the control arm 4 to the fixed block 21. After both ends of the control arm 4 are fixed, visually check whether the control arm 4 is horizontal. After confirming that it is horizontal, fix the fixed bracket 1 and the mounting support 9, and start the test. When measuring the same type of control arm 4, only the bolts at the fixed block 21 need to be removed, which effectively improves the test efficiency and ensures the test accuracy.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A fixture for testing the strength and durability of a control arm, characterized in that, include: Fixed bracket (1), wherein the fixed bracket (1) is disposed on the upper side of the workbench; A first fixing part (2) is detachably disposed on one side of the fixing bracket (1). A second fixing part (3) is disposed opposite to one side of the first fixing part (2). The space between the first fixing part (2) and the second fixing part (3) is used to fix the control arm (4). A sliding shaft (5) is horizontally disposed on one side of the second fixing part (3). The first fixing part (2) and the second fixing part (3) have the same structure, both including a fixing block (21) connected to the fixing bracket (1) or the sliding shaft (5), and a movable limiting block (22) is provided at one end of the fixing block (21) near the control arm (4); A sliding sleeve (6) is fitted on the outer wall of the sliding shaft (5), and the sliding sleeve (6) is slidably connected to the sliding shaft (5); A sensor (7) is disposed on the side of the sliding shaft (5), and a drive device (8) is disposed at one end of the sensor (7).

2. The control arm strength and durability testing fixture according to claim 1, characterized in that: The fixing block (21) has a slot (23) in the middle and a mounting hole (24) at the bottom of the slot (23). The fixing block (21) is connected to the fixing bracket (1) or the sliding shaft (5) by a fastener passing through the mounting hole (24).

3. The control arm strength and durability testing fixture according to claim 2, characterized in that: One side of the slot (23) is provided with a through hole (25) that matches the movable limiting block (22), and the other side of the slot (23) is provided with a through hole (26).

4. The control arm strength and durability testing fixture according to claim 1, characterized in that: The bottom of the sliding sleeve (6) is vertically provided with a mounting bracket (9).

5. The control arm strength and durability testing fixture according to claim 1, characterized in that: The fixed bracket (1) is provided with a plurality of fixing holes (11) for fixing the fixing block (21).

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