A test tool for a vehicle suspension bushing

Abstract

This utility model relates to a testing fixture for automotive suspension bushings. The fixture includes a support assembly and a clamping assembly. The support assembly includes a first support plate, a second support plate, and a connecting plate. The first support plate, the second support plate, and the connecting plate are connected on the same side, forming a receiving space between them. The clamping assembly has clamping holes, and the bushing to be tested is placed in the clamping holes. The clamping assembly is rotatably positioned within the receiving space. The automotive suspension bushing testing fixture provided by this utility model, by setting up the support assembly and the clamping assembly, installs the bushing to be tested in the clamping holes of the clamping assembly to simulate the installation method of automotive suspension bushings in a real vehicle. This ensures that the loading direction is consistent with the actual force, realizing the lateral, longitudinal, torsional, and yaw movements of the automotive suspension bushing, and better simulating the actual operating environment of the bushing.

Description

Technical Field

[0001] This utility model relates to a testing fixture for automotive suspension bushings. Background Technology

[0002] As a key component connecting the vehicle body and the suspension system, automotive suspension bushings must withstand complex dynamic loads (such as axial force, radial force, and torsional torque). Traditional testing systems often use unidirectional or bidirectional static loading methods, which cannot realistically simulate the multidirectional dynamic coupling stress state of the bushing under actual working conditions, resulting in discrepancies between test results and actual lifespan.

[0003] The existing suspension bushing testing device has a cuboid bushing clamping component with clamping holes. After fixing the bushing in the clamping holes, only radial or torsional loads can be applied, making it difficult to reproduce the coupling of multi-directional loads when the vehicle is in motion.

[0004] Therefore, there is an urgent need for a test fixture that can achieve multi-directional dynamic coupling loading and conforms to industry standards. Utility Model Content

[0005] The purpose of this invention is to provide a testing fixture for automotive suspension bushings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A testing fixture for automotive suspension bushings includes a support assembly and a clamping assembly. The support assembly includes a first support plate, a second support plate, and a connecting plate. The first support plate, the second support plate, and the connecting plate are connected on the same side, and a receiving space is formed between the first support plate, the connecting plate, and the second support plate. The clamping assembly has a clamping hole, and the bushing to be tested is placed in the clamping hole. The clamping assembly is rotatably positioned within the receiving space.

[0008] According to some embodiments of this utility model, the tooling is in a test working state, the first support plate is located above the second support plate, the first support plate and the second support plate extend along the X-axis direction, the connecting plate extends along the Z-axis direction, and the center line of the clamping hole is along the Y-axis direction.

[0009] According to some embodiments of this utility model, the upper side of the clamping assembly is rotatably connected to the first support plate, the lower side of the clamping assembly is rotatably connected to the second support plate, and the rotation axis of the clamping assembly is perpendicular to the center line of the clamping hole.

[0010] According to some embodiments of this utility model, the upper side of the clamping assembly is rotatably connected to the first support plate via a first rotating member, and the lower side of the clamping assembly is rotatably connected to the second support plate via a second rotating member. Both the first rotating member and the second rotating member include a bearing and a fixing member for fixing the bearing.

[0011] According to some embodiments of this utility model, the clamping assembly includes a first half-positioning member and a second half-positioning member, which are connected by a first fastener. Both the first half-positioning member and the second half-positioning member have grooves on their opposite sides. The grooves on the first half-positioning member and the second half-positioning member are arranged opposite to each other to form the clamping hole.

[0012] According to some embodiments of this utility model, the clamping assembly further includes a connecting member, and the first semi-positioning member and the second semi-positioning member are both connected to the same side of the connecting member.

[0013] According to some embodiments of this utility model, the connector is U-shaped, and the connector includes a connecting body and a first segment and a second segment disposed on the same side of the connecting body. The first segment and the second segment maintain a distance from each other, and the first half-positioning member and the second half-positioning member are both connected to the connecting body.

[0014] According to some embodiments of this utility model, one end of a second fastener passes through the first segment and the second segment in sequence, and a locking nut is provided on one end of the second fastener that extends out of the second segment.

[0015] According to some embodiments of this utility model, the first support plate and the second support plate are each provided with a first opening and a second opening. The first opening is used to accommodate the first rotating component and the second rotating component. The second opening is closer to the connecting plate than the first opening. The center lines of the first opening and the second opening are parallel. The first opening and the second opening are connected by a channel. One end of a third fastener extends into the channel from one side of the first support plate. The extension direction of the third fastener is perpendicular to the center line direction of the first opening and the second opening.

[0016] According to some embodiments of this utility model, the first support plate and the second support plate each include a plate body extending along their respective length direction and a connecting segment. The connecting segment is connected to the connecting plate, and the plate body is connected to the connecting segment. The width of the plate body is greater than the width of the connecting segment. The first opening and the second opening are respectively provided on the plate body of the first support plate and the plate body of the second support plate.

[0017] According to some embodiments of this utility model, the first support plate and the second support plate are detachably connected to the same side of the connecting plate; the connecting plate has receiving grooves at both ends on the side facing the first support plate and the second support plate, and one end of the first support plate and the second support plate is respectively disposed in the corresponding receiving groove.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] The automotive suspension bushing testing fixture provided by this utility model, by setting up a support component and a clamping component, installs the bushing to be tested in the clamping hole of the clamping component to simulate the installation method of automotive suspension bushing in a real vehicle, ensuring that the loading direction is consistent with the actual force, realizing the lateral, longitudinal, torsional and yaw movements of the automotive suspension bushing, and better simulating the actual operating environment of the bushing. Attached Figure Description

[0020] Appendix Figure 1 This is an overall structural diagram of the automotive suspension bushing testing fixture of this utility model;

[0021] Appendix Figure 2 An exploded view of the automotive suspension bushing testing fixture of this utility model;

[0022] Appendix Figure 3 This is a structural diagram of the clamping assembly of the automotive suspension bushing testing fixture of this utility model.

[0023] Appendix Figure 4 An exploded view of the clamping assembly of the automotive suspension bushing testing fixture of this utility model;

[0024] Appendix Figure 5 This is a structural diagram of the support assembly of the automotive suspension bushing testing fixture of this utility model;

[0025] Appendix Figure 6 This is an exploded view of the support assembly of the automotive suspension bushing testing fixture of this utility model.

[0026] In the attached diagrams above:

[0027] 1-Supporting component, 11-First support plate, second support plate, 111-Plate body, 1111-First opening, 1112-Second opening, 112-Connecting section, 12-Connecting plate, 121-Receiving groove, 122-Mounting hole;

[0028] 2-Clamping assembly, 21-First semi-positioning component, second semi-positioning component, 22-Connector, 221-Connecting body, 222-First section, second section, 23-First fastener, 24-Second fastener, 25-Third fastener, 26-Fourth fastener, 27-Locking nut, 28-Fifth fastener, 29-Channel;

[0029] 3-Bearing; 4-Bolt; 5-Snap ring. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] See Figures 1 to 6 The automotive suspension bushing testing fixture shown includes a support assembly 1 and a clamping assembly 2, wherein:

[0034] The bushing to be tested is a rubber bushing or a hydraulic bushing. The bushing to be tested includes at least an outer tube, an inner tube, and a buffer body located between the outer tube and the inner tube. The buffer body is made of rubber or other liquid substances. A central hole is opened in the middle of the inner tube. Both the outer tube and the inner tube are hollow cylinders.

[0035] The support assembly 1 includes a first support plate, a second support plate 11, and a connecting plate 12. The first support plate, the second support plate 11, and the connecting plate 12 are connected on the same side, and a gap is maintained between the first support plate and the second support plate. A receiving space is formed between the first support plate, the connecting plate 12, and the second support plate. The clamping assembly 2 maintains a gap with the connecting plate 12, and will not collide with the connecting plate 12 when the clamping assembly 2 rotates relative to the support assembly 1. The clamping assembly 2 has clamping holes that pass through its opposite sides. The clamping assembly 2 is rotatably positioned within the receiving space. When the fixture is in the test working state, the bushing to be tested is placed in the clamping hole, and the center line of the bushing to be tested is aligned with the center line of the clamping hole.

[0036] When the fixture is in test operation, the first support plate is positioned above the second support plate, and the first and second support plates are horizontal and parallel, extending along the X-axis. The connecting plate 12 is vertically positioned (along the Z-axis). The first support plate, connecting plate 12, and second support plate are arranged in a U-shape, and the clamping hole axis extends along the front-back direction (along the Y-axis). The upper side of the clamping assembly 2 is rotatably connected to the first support plate, and the lower side of the clamping assembly 2 is rotatably connected to the second support plate. The clamping assembly 2 can rotate within the accommodating space, with the Z-axis as its rotation axis, i.e., the rotation axis of the clamping assembly 2 is along the Z-axis direction, thus achieving the bushing's sway.

[0037] The upper side of clamping assembly 2 is rotatably connected to the first support plate via a first rotating member, and the lower side of clamping assembly 2 is rotatably connected to the second support plate via a second rotating member. (See attached image) Figure 6 Both the first and second rotating components include bearings 3 and fixing components, such as bolts 4, for securing the bearings 3. Mounting holes for mounting the bearings 3 are provided on both the first and second support plates. Furthermore, the rotating components also include retaining rings 5 ​​for securing the bearings 3.

[0038] In a preferred embodiment, see Figure 4 The clamping assembly 2 includes two independent semi-positioning components 21 and 22 semi-positioning components 21, which are joined together as a whole. The first and second semi-positioning components 21 are connected by a first fastener 23. Both the first and second semi-positioning components 21 have arc-shaped grooves on their opposite sides. When connected, the arc-shaped grooves on the first and second semi-positioning components are aligned to form clamping holes. When placing a bushing, the bushing is placed on the arc-shaped groove of one of the first and second semi-positioning components 21, and then the other half of the first and second semi-positioning components 21 is joined to it. The first and second semi-positioning components are then fixedly connected by the first fastener 23. The first and second semi-positioning components facilitate the installation and removal of the bushing to be tested.

[0039] In some embodiments, the tooling also includes a connector 22, and the first semi-positioning member and the second semi-positioning member 21 are both connected to the same side of the connector 22 by a fourth fastener 26. The drive shaft of the power component (second drive assembly) is connected to the connector 22, and the power component (second drive assembly) directly pushes the connector 22 to drive the clamping assembly 2 to rotate.

[0040] In some embodiments, the connector 22 is U-shaped and includes a connecting body 221 and a first segment and a second segment 222 disposed on the same side of the connecting body 221, with a gap between the first segment and the second segment. The first semi-positioning member and the second semi-positioning member 21 are both connected to the connecting body 221. One end of a second fastener 24 passes through the first segment and the second segment in sequence, and a locking nut 27 is provided on the end of the second fastener 24 that extends out of the second segment.

[0041] In this example, both the first support plate and the second support plate 11 are provided with a first opening 1111 and a second opening 1112. The first opening 1111 is used to accommodate the first rotating component and the second rotating component. The second opening 1112 is closer to the connecting plate 12 than the first opening 1111, and the diameter of the second opening 1112 is smaller than the diameter of the first opening 1111. The center lines of the first opening 1111 and the second opening 1112 are parallel, and the first opening 1111 and the second opening 1112 are connected by a channel 29. One end of a third fastener 25 extends into the channel 29 from one side of the first support plate. The extension direction of the third fastener 25 is perpendicular to the center line direction of the first opening 1111 and the second opening 1112. The first opening 1111, the second opening 1112 and the channel 29 are provided to better install and remove the first rotating component and the second rotating component.

[0042] In some embodiments, both the first support plate and the second support plate 11 include a plate body 111 extending along their respective length directions and a connecting segment 112. The plate body 111 and the connecting segment 112 are integrally formed. The connecting segment 112 is connected to the connecting plate 12, and the plate body 111 is connected to the connecting segment 112. The width of the plate body 111 is greater than the width of the connecting segment 112, and the width of the plate body 111 is greater than the width of the connecting plate 12. A first opening 1111 and a second opening 1112 are provided on the plate body 111 of the first support plate and the plate body 111 of the second support plate.

[0043] In some embodiments, the first support plate and the second support plate 11 are detachably connected to the same side of the connecting plate 12, which facilitates assembly, disassembly and replacement.

[0044] See Figure 6The connecting plate 12 has receiving grooves 121 at its opposite ends (such as the upper and lower ends) facing the first support plate and the second support plate 11. The receiving grooves 121 are recessed away from the first support plate and the second support plate 11. One end of the first support plate and the second support plate 11 are respectively set in the corresponding receiving grooves 121. The first support plate and the connecting plate 12 have corresponding mounting holes (the mounting holes are set in the receiving grooves). The first support plate and the connecting plate 12 are connected by installing the fifth fastener 28 in the mounting holes. The second support plate and the connecting plate 12 have corresponding mounting holes (the mounting holes are set in the receiving grooves). The second support plate and the connecting plate 12 are connected by installing the fifth fastener 28 in the mounting holes.

[0045] The specific implementation method of the automotive suspension bushing test fixture in this example is as follows: install the bushing to be tested in the clamping hole of the clamping assembly, and then connect the clamping assembly to the support assembly. The installation is quick and convenient.

[0046] This example also includes a first drive assembly, a second drive assembly, and a torsion drive assembly. When testing the automotive suspension bushing, the first drive assembly, the second drive assembly, and the torsion drive assembly drive the support assembly and the clamping assembly. The drive shaft of the first drive assembly is along the X-axis, and the drive shaft of the first drive assembly is connected to the connecting plate 12 to drive the tooling to move in a direction perpendicular to the bushing centerline. For example, driving the tooling to move along the X-axis achieves lateral movement. See [link to relevant documentation]. Figure 6 The connecting plate 12 has a mounting hole 122, and one end of the drive shaft of the first drive assembly is set in the mounting hole 122. The drive shaft of the second drive assembly is along the Y-axis. The second drive assembly is connected to the clamping assembly 2 to drive the clamping assembly 2 to move in a direction parallel to the center line of the bushing, so that the clamping assembly 2 rotates relative to the support assembly 1, and the bushing rotates when moving longitudinally. The torsion drive assembly includes a torsion drive component and a rotating shaft. The axis of the rotating shaft is parallel to the center line of the bushing. For example, the axis of the rotating shaft extends along the Y-axis. One end of the rotating shaft passes through the center hole of the bushing to be tested. The torsion drive component is connected to the other end of the rotating shaft to drive the rotating shaft to rotate around its own axis, thereby causing the bushing to rotate around its own axis, that is, torsion is achieved.

[0047] When the fixture is in test operation, the second drive assembly and the torsion drive assembly are located on opposite sides of the fixture (such as the front and rear sides), and the first drive assembly is located on the left or right side of the fixture.

[0048] In this example, one end of the drive shaft of the second drive assembly is located between the first and second segments of the connector 22. One end of a second fastener 24 passes through the first segment, the drive shaft of the second drive assembly, and the second segment in sequence, so that the drive shaft of the second drive assembly is connected to the clamping assembly 2, thereby driving the clamping assembly 2 to rotate relative to the support assembly 1. The drive shaft of the second drive assembly is perpendicular to the second fastener 24, and the axis of the second fastener 24 is perpendicular to the center line of the clamping hole.

[0049] In some embodiments, both the first drive assembly and the second drive assembly include hydraulic servo actuators, and the torsion drive is a hydraulic servo actuator.

[0050] The advantage of the automotive suspension bushing test fixture in this example is that it installs the bushing to be tested in the clamping hole of the clamping assembly to simulate the installation method of the automotive suspension bushing in a real vehicle, ensuring that the loading direction is consistent with the actual force, realizing the lateral, longitudinal, torsional and yaw movements of the automotive suspension bushing, and better simulating the actual operating environment of the bushing.

[0051] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automotive suspension bushing test fixture, comprising: The tooling includes a support assembly and a clamping assembly. The support assembly includes a first support plate, a second support plate, and a connecting plate. The first support plate, the second support plate, and the connecting plate are connected on the same side, and a receiving space is formed between the first support plate, the connecting plate, and the second support plate. The clamping assembly has a clamping hole, and the bushing to be tested is placed in the clamping hole. The clamping assembly is rotatably disposed within the receiving space.

2. The automotive suspension bushing test fixture of claim 1, wherein, The upper side of the clamping assembly is rotatably connected to the first support plate, and the lower side of the clamping assembly is rotatably connected to the second support plate. The rotation axis of the clamping assembly is perpendicular to the center line of the clamping hole.

3. The automotive suspension bushing test fixture of claim 2, wherein, The upper side of the clamping assembly is rotatably connected to the first support plate via a first rotating member, and the lower side of the clamping assembly is rotatably connected to the second support plate via a second rotating member. Both the first rotating member and the second rotating member include bearings and fixing members for fixing the bearings.

4. The automotive suspension bushing test fixture of claim 1, wherein, The clamping assembly includes a first half-positioning component and a second half-positioning component, which are connected by a first fastener. Both the first half-positioning component and the second half-positioning component have grooves on their opposite sides. The grooves on the first half-positioning component and the second half-positioning component are arranged opposite to each other to form the clamping hole.

5. The automotive suspension bushing test fixture of claim 4, wherein, The clamping assembly further includes a connector, and the first half-positioning member and the second half-positioning member are both connected to the same side of the connector.

6. The automotive suspension bushing test fixture of claim 5, wherein, The connector is U-shaped and includes a connecting body and a first segment and a second segment disposed on the same side of the connecting body. The first segment and the second segment are spaced apart. The first half-positioning member and the second half-positioning member are both connected to the connecting body.

7. The automotive suspension bushing test fixture of claim 6, wherein, One end of a second fastener passes through the first and second segments in sequence, and a locking nut is provided on the end of the second fastener that extends out of the second segment.

8. The automotive suspension bushing test fixture of claim 3, wherein, Both the first support plate and the second support plate are provided with a first opening and a second opening. The first opening is used to accommodate the first rotating component and the second rotating component. The second opening is closer to the connecting plate than the first opening. The center lines of the first opening and the second opening are parallel. The first opening and the second opening are connected by a channel. One end of a third fastener extends into the channel from one side of the first support plate. The extension direction of the third fastener is perpendicular to the center line direction of the first opening and the second opening.

9. The automotive suspension bushing test fixture of claim 8, wherein, The first support plate and the second support plate each include a plate body extending along their respective length direction and a connecting segment. The connecting segment is connected to the connecting plate, and the plate body is connected to the connecting segment. The width of the plate body is greater than the width of the connecting segment. The first opening and the second opening are respectively provided on the plate body of the first support plate and the plate body of the second support plate.

10. The automotive suspension bushing test fixture of claim 1, wherein, The first support plate and the second support plate are detachably connected to the same side of the connecting plate; the connecting plate has receiving grooves at both ends facing the first support plate and the second support plate, and one end of the first support plate and the second support plate is respectively set in the corresponding receiving groove.

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