A control arm ball joint stiffness testing system

Abstract

The utility model relates to a control arm ball hinge stiffness test system, including installation base, be equipped with detachable drive fixed unit and rear seat adjusting fixed unit on the installation base, the rear seat adjusting fixed unit is equipped with detachable spare part test tooling to the side of drive fixed unit's one side. The utility model adopts the simplified structure design, reduces assembly complexity, and the accessory installation process is efficient, significantly shortens the experiment preparation time, and promotes the test efficiency, still has the multifunctional test compatibility: through the replacement spare part test tooling of different sizes and by the rear seat adjusting fixed unit height adjustment, can support the ball hinge test of various sizes, realize one tooling multiple uses through the modularization design, cover the diversified test scene, reduce the special tooling demand.

Description

Technical Field

[0001] This utility model belongs to the technical field of ball hinge stiffness testing equipment, and in particular relates to a control arm ball hinge stiffness testing system. Background Technology

[0002] Stiffness is a key functional test item for ball joints in automotive control arms. However, dedicated ball joint stiffness testing equipment on the market is expensive, and generally imported. The costs of parts, labor, and import taxes incurred during equipment maintenance are high. Combined with the scarcity and technical complexity of the equipment, testing costs are significantly increased. Furthermore, the equipment is typically bulky, making transportation and installation difficult and consuming substantial manpower and space resources, indirectly increasing costs. Additionally, the equipment cannot be used for other experiments during idle periods, resulting in resource waste. Therefore, achieving cost reduction and efficiency improvement, and increasing resource utilization, became the key points of this tooling design. This design can test ball joints of different sizes, reducing the need for dedicated tooling; it allows for flexible resource use, reducing waste; and it significantly reduces testing costs, indirectly increasing company revenue. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a control arm ball hinge stiffness testing system, which can easily and conveniently test the stiffness of control arm ball hinges of different specifications, and replace imported equipment to reduce costs and increase efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A control arm ball joint stiffness testing system is provided, including a mounting base. The mounting base is provided with a detachable drive fixing unit and a rear seat adjustment fixing unit. The rear seat adjustment fixing unit has a detachable part testing fixture on the side facing the drive fixing unit. The drive fixing unit includes a support base, which includes a support base plate detachably mounted on the mounting base and a support upright plate vertically arranged on the support base plate. The support upright plate has a limiting hole in its center that matches the output shaft of a hydraulic actuator. The output shaft of the hydraulic actuator has a connecting block at its end. The rear seat adjustment fixing unit includes a fixing base, which includes a fixing base plate detachably mounted on the mounting base and a supporting upright plate vertically arranged on the fixing base plate. A fixed upright plate is provided with a vertically arranged self-aligning groove. A slidable self-aligning slider is provided in the self-aligning groove. A self-aligning support plate is provided on the top of the self-aligning slider. The distance between the self-aligning support plate and the top surface of the fixed upright plate is adjusted by bolts. A self-aligning connecting plate is provided at the bottom of the self-aligning support plate. A sensor bracket is provided at the end of the fixed base plate away from the drive fixing unit. The part testing fixture includes a ball seat fixing block connected to the connecting block by bolts and a ball pin U-shaped connecting block connected to the self-aligning connecting plate by bolts. The ball seat fixing block has a ball seat groove for accommodating the ball seat of the test part. The ball pin U-shaped connecting block has a ball pin hole for accommodating the ball pin of the test part. A displacement sensor for detecting changes in the position of the ball seat fixing block is provided on the sensor bracket.

[0005] Preferably, the mounting base includes a rectangular strip-shaped mounting base plate with two parallel T-slots. The bottom of both the drive fixing unit and the rear seat adjustment fixing unit is provided with several T-blocks that match the shape of the T-slots, so that the drive fixing unit and the rear seat adjustment fixing unit can slide along the T-slots and be detachably locked to the mounting base at appropriate positions by several bolts.

[0006] Preferably, the mounting base plate is provided with two guide bars parallel to the T-slot, the spacing of the guide bars is matched with the width of the rear seat adjustment and fixing unit, and the guide bars are fixed to the mounting base plate by several bolts.

[0007] Preferably, a ball seat clamping plate is provided above the ball seat fixing block, and a clamping slider is provided below the ball seat clamping plate. The clamping slider has a clamping hole that matches the ball pin of the part.

[0008] The beneficial effects are: (1) Structural optimization and ease of operation: The simplified structural design reduces assembly complexity, the parts installation process is efficient, the experimental preparation time is significantly shortened, and the testing efficiency is improved; (2) Multifunctional testing compatibility: By replacing the test fixtures of different sizes and adjusting the height by the rear seat adjustment and fixing unit, it can support ball joint testing of various sizes. The modular design realizes one fixture for multiple uses, covering diverse test scenarios and reducing the need for special fixtures; (3) Dynamic resource allocation capability and flexible disassembly design: When the test resources are idle, the fixtures can be quickly disassembled to release the loading actuators and test sites for other suspension or chassis products to conduct strength and fatigue tests, maximizing hardware utilization. A dynamic scheduling mechanism for test resources is formed to alleviate the equipment conflict problem when multiple projects are running in parallel; (4) Outstanding cost-effectiveness: The overall cost of this utility model after the improved design is only 1 / 20 to 1 / 30 of the dedicated stiffness testing equipment, which greatly reduces the procurement cost and is especially suitable for laboratories with limited budgets or those that need multiple equipment configurations. Attached Figure Description

[0009] Figure 1 This is a three-dimensional diagram of a control arm ball joint stiffness testing system.

[0010] Figure 2 for Figure 1 Exploded view of the central base.

[0011] Figure 3 for Figure 1 Exploded view of the central drive fixed unit.

[0012] Figure 4 for Figure 1 Exploded view of the testing fixture for the middle part.

[0013] Figure 5 for Figure 1 Exploded view of the middle and rear seat adjustment and fixing unit.

[0014] Wherein: 1-1: Mounting base; 1-1-1: Mounting base plate; 1-1-2: Guide bar; 1-1-3: T-slot; 1-2: Drive fixing unit; 1-2-1: Support seat; 1-2-2: Hydraulic actuator; 1-2-3: Connecting block; 1-3: Part testing fixture; 1-3-1: Ball seat fixing block; 1-3-2: Ball seat clamping plate; 1-3-3: Ball pin U-shaped connecting block; 1-3-4: Clamping slider; 1-3-5: Test part; 1-3-6: Part ball seat; 1-3-7: Part ball pin; 1-4: Rear seat adjustment fixing unit; 1-4-1: Fixing seat; 1-4-2: Self-aligning slider; 1-4-3: Self-aligning support plate; 1-4-4: Sensor bracket; 1-4-5: Self-aligning connecting plate; 1-4-6: Displacement sensor.

[0015] The same markings in each diagram represent the same component. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] like Figure 1 As shown, this invention provides a control arm ball hinge stiffness testing system, comprising four parts: a mounting base 1-1, a drive fixing unit 1-2, a part testing fixture 1-3, and a rear seat adjustment fixing unit 1-4. During installation, the system is arranged according to the position of the hydraulic actuator 1-2-2 in the existing equipment in the laboratory, with the length direction of the mounting base 1-1 parallel to the output direction of the hydraulic actuator 1-2-2.

[0018] Specifically, such as Figure 2 As shown, the mounting base 1-1 mainly includes: a mounting base plate 1-1-1, and a guide strip 1-1-2 for connecting and fixing the drive fixing unit 1-2 and the rear seat adjustment fixing unit 1-4. A T-slot 1-1-3 is designed at its bottom, which can conveniently adjust the distance between the drive fixing unit 1-2 and the rear seat adjustment fixing unit 1-4 according to the different lengths of the test parts. The guide strip 1-1-2 mainly restricts the rear seat adjustment fixing unit 1-4 from swaying when adjusting the distance, ensuring that the axis of the hydraulic actuator is always perpendicular to the fixing plate of the rear seat adjustment fixing unit 1-4.

[0019] The control arm ball hinge stiffness testing system is fixed to the laboratory floor, offering high strength and easy assembly / disassembly. Furthermore, the system is convenient to transport, occupies a small area, maximizes resource utilization, saves laboratory costs, and improves testing efficiency. The drive unit has a simple structure, is easy to assemble and disassemble, and utilizing laboratory actuators further reduces costs and improves resource utilization.

[0020] like Figure 3 As shown, the drive fixing unit 1-2 mainly includes: a support base 1-2-1, a hydraulic actuator 1-2-2, and a connecting block 1-2-3; the support base 1-2-1 fixes the hydraulic actuator 1-2-2 and connects it to the T-slot 1-1-1 on the mounting base plate 1-1; the connecting block 1-2-3 is installed at the front end of the hydraulic actuator 1-2-2, and the surface of the connecting block 1-2-3 has four bolt holes so as to connect test fixtures of different sizes by bolts; the hydraulic actuator 1-2-2 can provide a precise load for the test process and ensure that the loading force accurately passes through the center point of the test part; the structural design of the support base 1-2-1 fully meets the rigidity requirements of the test system.

[0021] like Figure 4 As shown, the part testing fixture 1-3 mainly includes: a ball seat fixing block 1-3-1, a ball seat clamping plate 1-3-2, a ball pin U-shaped connecting block 1-3-3, and a clamping slider 1-3-4. The test part 1-3-5 is installed inside the ball seat fixing block 1-3-1, and then the ball seat clamping plate 1-3-2 is used to fix the ball seat 1-3-6. The ball pin U-shaped connecting block 1-3-3 is connected to the ball pin 1-3-7 of the part by bolts, and the clamping slider is used to clamp the ball pin, ensuring that the part and fixture will not slip during the test. Different test parts with different structures can be quickly replaced using the part testing fixture 1-3 to achieve stiffness testing of various parts with different structures. The part testing fixture adopts a flanged clamping structure, which prevents the internal structure of the test part from being affected and improves the accuracy of the experiment. This tooling is easy to assemble, quick to change parts, and can be used with other ball joints by adjusting only a few parts, thus improving the tooling's versatility and saving costs.

[0022] like Figure 5 As shown, the rear seat adjustment and fixing unit 1-4 mainly includes: a fixed seat 1-4-1, a self-aligning slider 1-4-2, a self-aligning support plate 1-4-3, a sensor bracket 1-4-4, and a self-aligning connecting plate 1-4-5. The fixed seat 1-4-1 mainly fixes the test fixture 1-3 through the self-aligning connecting plate 1-4-5. The self-aligning slider 1-4-2 is connected to the self-aligning connecting plate 1-4-5, and its distance from the fixed plate is adjusted by bolts on the self-aligning support plate 1-4-3, thereby controlling the center height of the self-aligning connecting plate 1-4-5. At the same time, the self-aligning slider 1-4-2 slides up and down along the self-aligning groove opened in the height direction of the fixed plate, ensuring that the self-aligning connecting plate 1-4-5... In a vertical position, the self-aligning slider 1-4-2, self-aligning support plate 1-4-3, and self-aligning connecting plate 1-4-5 combine to keep the center of the control part ball and the loading force of the hydraulic actuator on the same axis. The center of the self-aligning connecting plate 1-4-5 and the fixed plate has a through hole. The sensor bracket 1-4-4 is fixed on the back of the fixed base 1-4-1. The displacement sensor 1-4-6 installed on it detects the relative displacement reading between the ball pin 1-3-7 and the ball base fixed block 1-2-3 (ball base 1-3-6) after the ball base fixed block is provided with a precise load by the hydraulic actuator 1-2-2 to determine whether the stiffness of the ball hinge is qualified.

[0023] The rear seat adjustment and fixing unit of this utility model adjusts the test position through two mechanisms (fixed base plate and self-aligning mechanism) to adapt to test fixtures of different sizes, which greatly improves the accuracy of test results and enhances the stability, strength, and reusability of the fixtures, thus saving costs. In addition, the rear seat adjustment and fixing unit is easy to adjust, improving testing efficiency.

Claims

1. A control arm ball joint stiffness testing system, characterized in that, The device includes a mounting base, on which a detachable drive fixing unit and a rear seat adjustment fixing unit are mounted. A detachable parts testing fixture is provided on the side of the rear seat adjustment fixing unit facing the drive fixing unit. The drive fixing unit includes a support base, which includes a support base plate detachably mounted on the mounting base and a support plate vertically arranged on the support base plate. The support plate has a limiting hole in the center that matches the output shaft of the hydraulic actuator, and the output shaft of the hydraulic actuator has a connecting block at its end. The rear seat adjustment and fixing unit includes a fixing base, which includes a fixing base plate detachably mounted on the mounting base and a fixing upright plate vertically arranged on the fixing base plate. The fixing upright plate is provided with a vertically arranged self-aligning groove, and a slidable self-aligning slider is provided in the self-aligning groove. A self-aligning support plate is provided on the top of the self-aligning slider. The distance between the self-aligning support plate and the top surface of the fixing upright plate is adjusted by bolts. A self-aligning connecting plate is provided at the bottom of the self-aligning support plate. A sensor bracket is provided at the end of the surface of the fixing base plate away from the drive fixing unit. The part testing fixture includes a ball seat fixing block bolted to the connecting block and a ball pin U-shaped connecting block bolted to the self-aligning connecting plate. The ball seat fixing block has a ball seat groove for accommodating the ball seat of the test part, and the ball pin U-shaped connecting block has a ball pin hole for accommodating the ball pin of the test part. A displacement sensor for detecting changes in the position of the ball seat fixing block is provided on the sensor bracket.

2. The control arm ball joint stiffness testing system according to claim 1, characterized in that, The mounting base includes a rectangular strip-shaped mounting base plate with two parallel T-slots. The bottom of both the drive fixing unit and the rear seat adjustment fixing unit has several T-blocks that match the shape of the T-slots, allowing the drive fixing unit and the rear seat adjustment fixing unit to slide along the T-slots and be detachably locked to the mounting base at appropriate positions by several bolts.

3. The control arm ball joint stiffness testing system according to claim 2, characterized in that, The mounting base plate is provided with two guide bars parallel to the T-slot. The spacing between the guide bars matches the width of the rear seat adjustment and fixing unit. The guide bars are fixed to the mounting base plate by several bolts.

4. The control arm ball joint stiffness testing system according to claim 1, characterized in that, The ball seat groove is open at the top and closed at the bottom. The closed end has a through hole that matches the ball pin of the part. A ball seat clamping plate is provided above the ball seat fixing block. A clamping slider is provided below the ball seat clamping plate. The clamping slider has a clamping hole with an inner diameter that matches the ball pin of the part.

Images