A detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly

Abstract

The present invention discloses a detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly. Aiming at the problems in the prior art that the actual use conditions of the sleeve assembly cannot be effectively simulated, and the test time is relatively long, delaying the design and development progress of the whole vehicle and the shock absorber, the present invention includes: a bracket, a mounting plate, a first actuator, a second actuator, three bearings and a torsion bar. The mounting plate is connected to the bracket. Each of the three bearings is connected with a bearing seat, and the three bearing seats are all connected to the mounting plate. The torsion bar passes through the three bearings. The third bushing is in clearance fit with the third bearing. A torsion arm is arranged at the end of the torsion bar close to the first bearing. The torsion arm is connected with a second connecting piece to the second actuator. The part to be tested is installed at the position between the second bearing and the third bushing on the torsion bar. A first connecting piece is installed on the part to be tested and connected to the first actuator.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection tools, and particularly relates to a detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly. Background Art

[0002] The sleeve assembly is one of the key performance components of a vehicle shock absorber assembly. During the design and development process of the whole vehicle and the shock absorber, it is necessary to detect the durability performance of the sleeve assembly to verify whether the performance attenuation rate and reliability of the sleeve assembly under certain working conditions meet the product design requirements.

[0003] In the prior art, the working conditions for detecting the durability performance of the sleeve assembly are: a reciprocating force working condition at a certain angle with the axis of the sleeve assembly and a reciprocating torsion working condition around the axis of the sleeve assembly. Usually, the two working conditions are tested separately.

[0004] The prior art has the following technical problems:

[0005] Testing the two working conditions separately cannot effectively simulate the actual working conditions of the sleeve assembly, and the testing time is relatively long, delaying the design and development progress of the whole vehicle and the shock absorber. Summary of the Invention

[0006] Aiming at the problems in the prior art that the actual working conditions of the sleeve assembly cannot be effectively simulated, the testing time is relatively long, and the design and development progress of the whole vehicle and the shock absorber is delayed, the present invention proposes a detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly, and its purpose is: to simultaneously test the sleeve assembly under a reciprocating force working condition at a certain angle with the axis and a reciprocating torsion working condition around the axis of the sleeve assembly.

[0007] The technical solution adopted by the present invention to achieve the above purpose is: to provide a detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly, including: a bracket, a mounting plate, a first actuator, a second actuator, a first bearing, a second bearing, a third bearing, and a torsion bar. The mounting plate is connected to the bracket. The first bearing, the second bearing, and the third bearing are all connected with bearing seats, and the three bearing seats are all connected to the mounting plate. The second bearing is located between the first bearing and the third bearing. The torsion bar passes through the first bearing, the second bearing, and the third bearing. A first bushing is installed at the end of the first bearing away from the second bearing. A second bushing is installed at the end of the second bearing away from the first bearing. The third bushing is penetrated by the torsion bar, and the third bushing is in clearance fit with the third bearing. A torsion arm is provided at the end of the torsion bar close to the first bearing. The torsion arm is connected with a second connecting member, and the second connecting member is connected with the second actuator. The part to be tested is installed at the position between the second bearing and the third bushing on the torsion bar. A first connecting member is installed on the part to be tested, and the first connecting member is connected with the first actuator.

[0008] Preferably, the contact surface between the bracket and the mounting plate of the present invention is vertically arranged.

[0009] Preferably, the mounting plate of the present invention is movably connected to the bracket, enabling flexible fixation and used for angle adjustment.

[0010] Preferably, several evenly distributed screw holes are provided on the mounting plate of the present invention, and flexible fixation after angle adjustment is achieved through the cooperation of screws and nuts.

[0011] Preferably, the torsion arm of the present invention is fixed to the torsion bar through the first nut, spring washer, flat washer and fixing screw to prevent relative rotation between the torsion arm and the torsion bar.

[0012] Preferably, a first small round nut is provided at one end of the first bushing away from the first bearing for fixation by the first small round nut.

[0013] Preferably, a second small round nut is provided at one end of the second bushing away from the second bearing for fixation by the second small round nut.

[0014] Preferably, a washer and a second nut are provided at one end of the third bearing away from the second bearing for fixing the part to be tested by tightening the second nut.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages / beneficial effects:

[0016] 1. The present invention meets the test requirements of "reciprocating force condition at a certain angle to the axis and reciprocating torsion condition around the axis of the casing assembly" during the detection of the casing assembly, which can save a large amount of experimental time and resources.

[0017] 2. Both the first actuator and the second actuator of the present invention can be arranged perpendicular to the bottom surface of the bracket, facilitating the setup and maintenance of the test. Moreover, the device is simple to use and has strong versatility. For casing assemblies with different sizes and structures, only the corresponding third bushing needs to be replaced for detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the side of Embodiment 1 of the present invention.

[0021] Figure 3 It is a schematic structural diagram of the part to be measured of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the part to be measured of the present invention.

[0023] The marks in the figure are respectively: 1, bracket; 2, mounting plate; 3, torsion arm; 4, first nut; 5, spring washer; 6, flat washer; 7, fixing screw; 8, first small round nut; 9, first bushing; 10, first bearing; 11, bearing seat; 12, torsion bar; 13, second actuator; 14, positioning screw; 15, second bushing; 16, first actuator; 17, third bushing; 18, second nut; 19, part to be measured; 20, second small round nut; 21, inner tube; 22, rubber material and external structure. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0026] Embodiment 1:

[0027] Such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, the present invention provides a detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly, including: a bracket 1, a mounting plate 2, a first actuator 16, a second actuator 13, a first bearing 10, a second bearing, a third bearing, and a torsion bar 12. The mounting plate 2 is connected to the bracket 1, and the contact surface between the bracket 1 and the mounting plate 2 is vertically arranged. The first bearing 10, the second bearing, and the third bearing are all connected with bearing seats 11, and the three bearing seats 11 are all connected to the mounting plate 2. The second bearing is located between the first bearing 10 and the third bearing. The torsion bar 12 passes through the first bearing 10, the second bearing, and the third bearing. A first bushing 9 is installed at the end of the first bearing 10 away from the second bearing. A second bushing 15 is installed at the end of the second bearing away from the first bearing 10. The third bushing 17 is penetrated by the torsion bar 12, and the third bushing 17 is in clearance fit with the third bearing. A torsion arm 3 is provided at the end of the torsion bar 12 close to the first bearing 10. The torsion arm 3 is connected with a second connecting piece, and the second connecting piece is connected with a second actuator 13. The part to be tested 19 is installed at the position between the second bearing and the third bushing 17 on the torsion bar 12. A first connecting piece is installed on the part to be tested 19, and the first connecting piece is connected with the first actuator 16. In this embodiment 1, the torsion bar 12 is designed with multiple steps and threads.

[0028] The mounting plate 2 is movably connected to the bracket 1, enabling flexible fixation and used for adjusting the angle. A plurality of uniformly distributed screw holes are provided on the mounting plate 2, and flexible fixation after angle adjustment is achieved through the cooperation of screws and nuts.

[0029] In the present invention, the torsion arm 3 is fixed to the torsion bar 12 through a first nut 4, a spring washer 5, a flat washer 6, and a fixing screw 7 to prevent relative rotation between the torsion arm 3 and the torsion bar 12.

[0030] One end of the first bushing 9 away from the first bearing 10 is provided with a first small round nut 8 for fixation through the first small round nut 8. One end of the second bushing 15 away from the second bearing is provided with a second small round nut 20 for fixation through the second small round nut 20. A washer and a second nut 18 are provided at the end of the third bearing away from the second bearing for fixing the part to be tested 19 by tightening the second nut 18.

[0031] The mounting plate 2 is fixed to the bracket 1 using screws and nuts to form a fatigue durability tooling for the sleeve assembly.

[0032] When the mounting plate 2 is fixed to the bracket 1 using the positioning screw 14, first install the positioning screw 14 and its nut. Tighten the nut until the mounting plate 2 is in contact with the bracket 1 and can rotate. Rotate the mounting plate 2 around the positioning screw 14 to the required angle γ for testing, and then install and tighten all the remaining screws and nuts on the mounting plate for fixation. Place the part 19 to be tested at the position between the second small round nut 20 and the third bushing 17 on the torsion bar 12, and fix it by tightening the washer and the second nut 18. Install the first actuator 16 and the first connecting piece on the part 19 to be tested, so that there is a torsion of angle γ between the inner tube 21 of the part 19 to be tested, the rubber compound and the external structure 22. The torsion arm 3 is connected to the second actuator 13 and the second connecting piece.

[0033] In this embodiment 1, with the above structure, a force and working condition Q at an angle γ with the part 19 to be tested can be applied to the part 19 to be tested through the first actuator 16 and the first connecting piece. The second actuator 13 and the second connecting piece drive the torsion arm 3 to rotate by an angle θ and the working condition, so that a rotation angle θ and the working condition are generated between the inner tube 21 of the part 19 to be tested, the rubber compound and the external structure 22. It meets the test requirements of the "reciprocating force working condition at a certain angle with the axis and the reciprocating torsion working condition around the axis of the casing assembly" during the detection of the casing assembly. At the same time, both the first actuator 16 and the second actuator 13 can be arranged perpendicular to the bottom surface of the bracket 1, which facilitates the setup and maintenance of the test.

[0034] The innovation of this device is mainly to provide a detection device that can simultaneously test the reciprocating force working condition at a certain angle with the axis and the reciprocating torsion working condition around the axis of the casing assembly for the casing assembly. Through the innovation of the fatigue durability tooling structure of the casing assembly, the test requirements of the "reciprocating force working condition at a certain angle with the axis and the reciprocating torsion working condition around the axis of the casing assembly" are achieved during the detection of the casing assembly, which can save a large amount of experimental time and resources. At the same time, both the first actuator 16 and the second actuator 13 can be arranged perpendicular to the bottom surface of the bracket 1, which facilitates the setup and maintenance of the test. And this device is simple to use and has strong versatility. For casing assemblies of different sizes and structures, only the corresponding third bushing 17 needs to be replaced for detection.

[0035] The above is only the preferred embodiment of the present invention. It should be noted that the above preferred embodiment should not be regarded as a limitation of the present invention. The protection scope of the present invention should be subject to the scope defined by the claims. For those of ordinary skill in the art in this technical field, without departing from the spirit and scope of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly, characterized in that, it includes: a bracket, a mounting plate, a first actuator, a second actuator, a first bearing, a second bearing, a third bearing and a torsion bar. The mounting plate is connected to the bracket. The first bearing, the second bearing and the third bearing are all connected with bearing seats, and the three bearing seats are all connected to the mounting plate. The second bearing is located between the first bearing and the third bearing. The torsion bar passes through the first bearing, the second bearing and the third bearing. A first bushing is installed at the end of the first bearing away from the second bearing. A second bushing is installed at the end of the second bearing away from the first bearing. A third bushing is penetrated by the torsion bar, and the third bushing is in clearance fit with the third bearing. A torsion arm is arranged at the end of the torsion bar close to the first bearing. The torsion arm is connected with a second connecting piece, and the second connecting piece is connected with a second actuator. The part to be tested is installed at the position between the second bearing and the third bushing on the torsion bar. A first connecting piece is installed on the part to be tested, and the first connecting piece is connected with the first actuator; the contact surface between the bracket and the mounting plate is vertically arranged; the mounting plate is movably connected to the bracket and can be flexibly fixed for adjusting the angle; several uniformly distributed screw holes are arranged on the mounting plate, and flexible fixation after angle adjustment is realized through the cooperation of screws and nuts; with the above structure, a force at an angle with the part to be tested can be applied to the part to be tested through the first actuator and the first connecting piece. The torsion arm is driven to rotate through the second actuator and the second connecting piece, so that a rotation angle is generated between the inner tube of the part to be tested, the rubber material and the external structure, so as to meet the test requirements of the sleeve assembly for simultaneously performing the "reciprocating force working condition at a certain angle with the axis and the reciprocating torsion working condition around the axis of the sleeve assembly" during the detection process.

2. A detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly according to claim 1, characterized in that, the torsion arm is fixed to the torsion bar through a first nut, a spring washer, a flat washer and a fixing screw to prevent relative rotation between the torsion arm and the torsion bar.

3. A detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly according to claim 1, characterized in that, a first small round nut is arranged at the end of the first bushing away from the first bearing for fixation through the first small round nut.

4. A detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly according to claim 1, characterized in that, a second small round nut is arranged at the end of the second bushing away from the second bearing for fixation through the second small round nut.

5. A detection device for detecting the durability performance of a vehicle shock absorber sleeve assembly according to claim 1, characterized in that, a washer and a second nut are arranged at the end of the third bearing away from the second bearing for fixing the part to be tested by tightening the second nut.

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