Wave spring service life test device

Abstract

The invention discloses a wave spring service life testing device, and belongs to the technical field of wave spring testing. The device comprises a first compression mechanism and a second compression mechanism, the second compression mechanism comprises a second compression assembly and a driving assembly, and the second compression assembly and the first compression mechanism are arranged in a spaced mode in the first direction; the driving assembly is arranged on the side, away from the first compression mechanism, of the second compression assembly and movably connected with the second compression assembly. The driving assembly is configured to drive the second compression assembly to be close to or away from the first compression mechanism in the first direction. And the stroke of the second compression assembly can be adjusted in the moving process of the second compression assembly. The stroke of the second compression assembly is adjusted in the process of reciprocating motion in the first direction, adjustment of the compression amplitude of the wave spring is achieved, different working conditions of the wave spring can be simulated, and therefore the test accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waveform spring testing, and particularly relates to a waveform spring life test device. BACKGROUND

[0002] When a waveform spring of an automobile chassis braking system works, mechanical energy is converted into braking force through elastic deformation, so that the brake pad and the brake disc are quickly contacted and friction is generated to form a braking torque. In order to ensure the quality of the automobile chassis braking system, the life of the waveform spring needs to be tested. However, when the waveform spring is tested, it is usually repeatedly compressed, but there are problems of low experimental precision and inaccurate test results. SUMMARY

[0003] The embodiment of the present application provides a waveform spring life test device, which can simulate different working conditions of the waveform spring, so as to solve the problems of inaccurate test results and low experimental precision.

[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a waveform spring life test device is provided, which comprises a first compression mechanism and a second compression mechanism.

[0005] The second compression mechanism comprises:

[0006] A second compression assembly is arranged at a side away from the first compression mechanism and is movably connected with the second compression assembly.

[0007] A driving assembly is arranged at a side of the second compression assembly away from the first compression mechanism and is movably connected with the second compression assembly.

[0008] The driving assembly is configured to drive the second compression assembly to move towards or away from the first compression mechanism along the first direction, and the stroke of the second compression assembly can be adjusted during the movement of the second compression assembly.

[0009] In some embodiments, the driving assembly comprises:

[0010] A second driving part;

[0011] A driving disc is connected with the output end of the second driving part. The driving disc has a first adjusting groove which penetrates the driving disc along the axial direction of the driving disc and extends along the radial direction of the driving disc. The axis of the driving disc is located outside the first adjusting groove.

[0012] An adjusting assembly comprises opposite first and second ends. The first end is movably arranged in the first adjusting groove, and the second end is connected with the driving disc and can move along the axial direction of the driving disc.

[0013] The first connecting rod is rotatably connected to the first end and rotatably connected to the second compression assembly.

[0014] In some embodiments, the driving disc comprises:

[0015] The disc body is provided with the first adjusting groove.

[0016] The driving sleeve is connected to the side of the disc body away from the first connecting rod and coaxial with the disc body. The driving sleeve is provided with a second adjusting groove. The second adjusting groove penetrates the side of the driving sleeve along the radial direction of the driving disc and extends along the axial direction of the driving disc. The second end is arranged in the second adjusting groove and can move in the second adjusting groove.

[0017] The adjusting assembly is configured to move the first end towards the direction close to the axis of the driving disc when the second end moves towards the direction away from the disc body, and move the first end towards the direction away from the axis of the driving disc when the second end moves towards the direction close to the disc body.

[0018] In some embodiments, the second adjusting groove penetrates the side of the driving sleeve away from the disc body along the axial direction of the driving disc.

[0019] The adjusting assembly comprises:

[0020] The guide block is slidably arranged in the first adjusting groove and rotatably connected to the first connecting rod. The guide block forms the first end.

[0021] The second connecting rod is arranged on the side of the disc body away from the first connecting rod and rotatably connected to the guide block.

[0022] The sliding block is slidably arranged in the second adjusting groove and rotatably connected to the second connecting rod. The sliding block forms the second end.

[0023] The third driving part is at least partially arranged on the side of the driving sleeve away from the disc body. The output end of the third driving part is connected to the sliding block to drive the sliding block to move in the second adjusting groove.

[0024] In some embodiments, the driving assembly further comprises:

[0025] The first transmission wheel is connected to the output end of the second driving part.

[0026] The second transmission wheel is connected to the driving sleeve. The second transmission wheel is engaged with the first transmission wheel.

[0027] In some embodiments, the first connecting rod has a length greater than a maximum distance between the first adjusting groove and the edge of the disc body.

[0028] In some embodiments, the first compression mechanism comprises:

[0029] a first compression assembly, which is arranged apart from the second compression assembly;

[0030] a first driving portion, which is arranged on a side of the first compression assembly away from the second compression assembly, and has an output end connected to the first compression assembly to drive the first compression assembly to move closer to or away from the second compression assembly along the first direction.

[0031] In some embodiments, a plurality of guide rods are further included, which are arranged to extend along the first direction, and are arranged apart from each other along a circumferential direction of the first compression mechanism and the second compression mechanism, and each of the guide rods is movably connected to the first compression assembly and the second compression assembly.

[0032] In some embodiments, the first compression assembly comprises a first sliding plate, which is connected to the output end of the first driving portion and is slidably connected to the plurality of guide rods.

[0033] The second compression assembly comprises a second sliding plate, which is connected to the output end of the driving assembly and is arranged apart from the first sliding plate, and is slidably connected to the plurality of guide rods.

[0034] In some embodiments, the first compression assembly further comprises a plurality of first plate bodies, which are connected to a side of the first sliding plate close to the second sliding plate and are arranged apart from each other along a circumferential direction of the first sliding plate, and the first sliding plate has a plurality of first avoiding grooves, each of which is arranged between two adjacent first plate bodies.

[0035] The second compression assembly further comprises a plurality of second plate bodies, which are connected to a side of the second sliding plate close to the first sliding plate and are arranged apart from each other along a circumferential direction of the second sliding plate, and the second sliding plate has a plurality of second avoiding grooves, each of which is arranged between two adjacent second plate bodies.

[0036] In the first direction, the first plate bodies and the second plate bodies are arranged in a staggered manner, and in the case that the second compression assembly moves along the first direction towards the first compression assembly, the first plate bodies are arranged in the second avoiding grooves, the second plate bodies are arranged in the first avoiding grooves, and each of the first plate bodies covers a gap between two adjacent second plate bodies, so that an enclosed space is formed between the first compression assembly and the second compression assembly.

[0037] In some embodiments, the first compression mechanism further comprises a heating portion, which is arranged on a side of the first sliding plate away from the second sliding plate, and the heating portion is capable of heating the enclosed space after the first compression assembly and the second compression assembly form the enclosed space.

[0038] In some embodiments, the first compression mechanism further comprises:

[0039] a sealing portion connected to a side of the first sliding plate away from the second sliding plate and forming a gas guiding space with the first sliding plate; the sealing portion has a first gas guiding hole in communication with the gas guiding space; the heating portion is located in the gas guiding space,

[0040] a telescopic air bag connected to a side of the sealing portion away from the first sliding plate, and the first gas guiding hole is in communication with the telescopic air bag;

[0041] The first sliding plate is provided with a second gas guiding hole in communication with the enclosed space and the gas guiding space, respectively.

[0042] In some embodiments, further comprising a cabinet, and the first compression mechanism, the second compression mechanism and the plurality of guide rods are arranged in the cabinet, and the guide rods, the driving assembly and the first driving portion are connected with the cabinet.

[0043] The wave spring life test device provided by the embodiment of the present application comprises a first compression mechanism and a second compression mechanism, the second compression mechanism comprises a second compression assembly and a driving assembly, the second compression assembly is arranged in a first direction and spaced apart from the first compression mechanism; the driving assembly is arranged on a side of the second compression assembly away from the first compression mechanism and movably connected with the second compression assembly; wherein the driving assembly is configured to drive the second compression assembly to move towards or away from the first compression mechanism in the first direction; and the driving assembly is capable of adjusting the stroke of the second compression assembly during the movement of the second compression assembly. The embodiment of the present application adjusts the stroke of the second compression assembly in the first direction during the reciprocating movement of the second compression assembly in the first direction, so as to adjust the compression amplitude of the wave spring, thereby adjusting the compression amount of the wave spring. In this way, the service life of the wave spring under different working conditions can be simulated, thereby improving the accuracy of the wave spring test. The wave spring compression amplitude can be changed during the wave spring test without stopping, so that the wave spring test can be continuously carried out, thereby improving the test efficiency of the wave spring.

[0044] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0046] For a more complete understanding of the present application and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings in which like reference numerals represent like parts throughout the various figures.

[0047] Figure 1 is a schematic diagram of the overall structure of a wave spring life test device provided in an exemplary embodiment of the present disclosure;

[0048] Figure 2 is a schematic diagram of the internal structure of a wave spring life test device provided in an exemplary embodiment of the present disclosure;

[0049] Figure 3 is a schematic diagram of the structure of the first compression mechanism and the second compression mechanism in a compressed state of a wave spring life test device provided in an exemplary embodiment of the present disclosure;

[0050] Figure 4 is a schematic diagram of the structure of a drive assembly of a wave spring life test device provided in an exemplary embodiment of the present disclosure;

[0051] Figure 5 is a schematic diagram of the structure of a drive assembly after being partially cut open provided in an exemplary embodiment of the present disclosure;

[0052] Figure 6 is a schematic diagram of the structure of a second compression assembly provided in an exemplary embodiment of the present disclosure;

[0053] Figure 7 is a schematic diagram of the structure of a first compression mechanism provided in an exemplary embodiment of the present disclosure;

[0054] Figure 8 is a schematic diagram of the structure of a first compression mechanism and a wave spring provided in an exemplary embodiment of the present disclosure;

[0055] Figure 9 is a sectional view of a wave spring life test device provided in an exemplary embodiment of the present disclosure;

[0056] Figure 10 is a schematic diagram of the structure of a second compression mechanism in a state provided in an exemplary embodiment of the present disclosure;

[0057] Figure 11is a structural schematic view of another state of a second compression mechanism provided in an exemplary embodiment of the present disclosure.

[0058] BRIEF DESCRIPTION OF DRAWINGS

[0059] 100, first compression mechanism; 110, first compression assembly; 111, first sliding plate; 1111, first avoiding slot; 1112, second air guide hole; 112, first plate body; 120, first driving part; 130, heating part; 140, sealing part; 141, first air guide hole; 150, air guide space; 160, stretchable air bag;

[0060] 200, second compression mechanism; 210, second compression assembly; 211, second sliding plate; 2111, second avoiding slot; 212, second plate body; 220, driving assembly; 221, second driving part; 222, driving disc; 2221, first adjusting slot; 2222, disc body; 2223, driving sleeve; 2224, second adjusting slot; 223, adjusting assembly; 2231, first end; 2232, second end; 2233, guiding block; 2234, second connecting rod; 2235, sliding block; 2236, third driving part; 224, first connecting rod; 225, first transmission wheel; 226, second transmission wheel;

[0061] 300, guiding rod;

[0062] 400, closed space;

[0063] 500, cabinet body;

[0064] 600, wave spring;

[0065] X, first direction. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0067] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, at least one of which can be one, two or more, unless otherwise explicitly specified. In the description of the present application, "vertical" means completely vertical at 90° or almost completely vertical, for example, within an angle range of 80°-100°, it is considered as vertical, similarly, "parallel" means completely parallel or almost completely parallel, for example, within a range of 10° of complete parallel, it is considered as parallel.

[0068] In the related art, when the wave spring of the new energy vehicle chassis braking system is working, the mechanical energy is converted into braking force through elastic deformation, so that the brake pad and the brake disc are quickly contacted and friction is generated to form a braking torque. In order to ensure the quality of the new energy vehicle, the service life of the wave spring needs to be tested. The current test device often uses a cylinder to drive the compression structure to compress the wave spring. In actual use, the wave spring needs to be frequently adjusted in compression amount to adapt to dynamic load under the influence of road impact, ABS (Anti-locked Braking System) high-frequency intervention, etc., resulting in real-time changes in output force. However, the extension stroke of the cylinder is relatively fixed, and the compression amplitude of the wave spring is unchanged, so it is not possible to test wave springs under different working conditions at this time, and therefore there is a problem of inaccurate experimental results and low precision.

[0069] Therefore, the embodiments of the present application provide a wave spring service life test device, which aims to solve at least one of the above problems.

[0070] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 9The embodiment of the present application provides a waveform spring life test device, which comprises a first compression mechanism 100 and a second compression mechanism 200, the second compression mechanism 200 comprises a second compression assembly 210 and a driving assembly 220, the second compression assembly 210 is arranged at a side, away from the first compression mechanism 100, along a first direction X; the driving assembly 220 is arranged at the side, away from the first compression mechanism 100, of the second compression assembly 210 and is movably connected with the second compression assembly 210; wherein the driving assembly 220 is configured to drive the second compression assembly 210 to move towards or away from the first compression mechanism 100 along the first direction X; and the stroke of the second compression assembly 210 can be adjusted during the movement of the second compression assembly 210.

[0071] In the embodiment of the present application, the stroke of the second compression assembly 210 along the first direction X is adjusted during the reciprocating movement of the second compression assembly 210 along the first direction X, so that the compression amplitude of the waveform spring 600 can be adjusted, the compression amount of the waveform spring 600 is adjusted, and the service life of the waveform spring 600 under different working conditions can be simulated, thereby improving the accuracy of the waveform spring 600 test. The compression amplitude of the waveform spring 600 can be changed during the waveform spring 600 test without stopping, and the waveform spring 600 test can be continuously performed, thereby improving the test efficiency of the waveform spring 600.

[0072] Specifically, in the embodiment of the present application, the first compression mechanism 100 and the second compression mechanism 200 are arranged opposite to each other, and the gap between the two is used to accommodate the waveform spring 600. During the waveform spring 600 life test, the second compression mechanism 200 moves reciprocally towards or away from the first compression mechanism 100 along the first direction X, so as to realize the compression test of the waveform spring 600. Specifically, the second compression assembly 210 compresses the waveform spring 600, and the driving assembly 220 drives the second compression assembly 210 to move reciprocally, and the specific stroke of the second compression assembly 210 can be adjusted during the reciprocating movement of the second compression assembly 210, so that the adjustment process is realized without stopping, the waveform spring 600 test can be continuously performed, and the test efficiency of the waveform spring 600 is improved.

[0073] It can be understood that for the dynamic load scenarios such as ABS high-frequency intervention and road impact, the driving assembly 220 of the embodiment of the present application can simulate the dynamic change of the compression amount of the waveform spring 600 caused by load mutation during braking by adjusting the stroke (such as amplitude, frequency, etc.) of the second compression assembly 210, so as to cover the full range of working conditions from static pre-tightening force to dynamic impact load. Thus, dynamic load simulation can be realized, and the accuracy and precision of the waveform spring 600 test are improved.

[0074] Please refer to Figure 3 , Figure 4 andFigure 5 In some embodiments, the driving assembly 220 comprises a second driving part 221, a driving disc 222, an adjusting assembly 223 and a first connecting rod 224, the driving disc 222 is connected with the output end of the second driving part 221; the driving disc 222 has a first adjusting groove 2221, the first adjusting groove 2221 penetrates through the driving disc 222 along the axial direction of the driving disc 222 and is arranged along the radial direction of the driving disc 222; the axial center of the driving disc 222 is located outside the first adjusting groove 2221; the adjusting assembly 223 comprises opposite first and second ends 2231 and 2232, the first end 2231 is movably arranged in the first adjusting groove 2221, the second end 2232 is connected with the driving disc 222 and can move along the axial direction of the driving disc 222; one end of the first connecting rod 224 is rotatably connected with the first end 2231, and the other end is rotatably connected with the second compression assembly 210.

[0075] In the embodiments of the present application, the second driving part 221 is used to drive the driving disc 222 to rotate, the driving disc 222 is used to drive the first connecting rod 224 to move, the first connecting rod 224 is used to drive the second compression assembly 210 to reciprocate along the first direction X to approach or move away from the first compression mechanism 100, and the adjusting assembly 223 is used to adjust the position of the first connecting rod 224 on the driving disc 222, so as to adjust the stroke of the reciprocating movement of the second compression assembly 210 along the first direction X.

[0076] Specifically, the embodiments of the present application actually drive the eccentric adjustable transmission of the first connecting rod 224 through the rotary drive of the driving disc 222, replace the rigid linear drive of the traditional air cylinder by using the combination of rotary drive and eccentric adjustable transmission, specifically, convert the rotary motion of the driving disc 222 into the reciprocating linear motion of the second compression assembly 210, and realize the dynamic controllability of the stroke of the second compression assembly 210 through the adjusting assembly 223, so as to realize more complex test environments.

[0077] It can be understood that the adjustment of the movement stroke of the second compression assembly 210 in the embodiments of the present application is specifically achieved by means of the first adjusting groove 2221 arranged on the driving disc 222, the movement of the first end 2231 of the adjusting assembly 223 in the first adjusting groove 2221, adjustment of the position of the first connecting rod 224 on the driving disc 222, and then adjustment of different strokes. Wherein, the first adjusting groove 2221 extends along the radial direction of the driving disc 222 and the axial center of the driving disc 222 is located outside the first adjusting groove 2221, at this time, the first adjusting groove 2221 can be understood as an eccentric radial groove, the first end 2231 of the adjusting assembly 223 can move along the length direction of the first adjusting groove 2221, that is, move along the radial direction of the driving disc 222, so as to control the swing amplitude of the first connecting rod 224 by changing the eccentric distance between the adjusting assembly 223 and the axial center of the driving disc 222.

[0078] Specifically, when the first end 2231 of the adjusting assembly 223 moves in the first adjusting groove 2221 towards the edge of the driving disc 222, at this time the eccentricity increases, the maximum reciprocating stroke of the second compression assembly 210 driven by the first connecting rod 224 increases accordingly, so as to simulate the large compression requirement of road impact; when the first end 2231 of the adjusting assembly 223 moves in the first adjusting groove 2221 towards the center of the driving disc 222, at this time the eccentricity decreases, the maximum reciprocating stroke of the second compression assembly 210 driven by the first connecting rod 224 decreases accordingly, so as to simulate the high frequency requirement of small compression of ABS intervention.

[0079] The above adjustment method does not need to replace the driving part, but only needs to move the position of the adjusting assembly 223 to achieve, and can realize continuous stroke adjustment (the adjustment range is determined by the radial length of the first adjusting groove 2221), so as to effectively cover the change of dynamic compression of the waveform spring 600 in actual use.

[0080] It should be noted that the second end 2232 of the adjusting assembly 223 is movable in the axial direction of the driving plate, and the second end 2232 is moved to pull the first end 2231 to move in the first adjusting groove 2221, so as to adjust the position of the first end 2231, thereby adjusting the compression stroke of the second compression assembly 210.

[0081] It should be noted that the second driving part 221 can be a motor, specifically a servo motor, which can directly control the rotating speed of the driving disc 222, and further control the frequency of reciprocating movement of the second compression assembly 210.

[0082] It should be further noted that the two ends of the first connecting rod 224 are rotationally connected, which can smoothly convert the rotating motion of the driving disc 222 into linear motion, avoiding the problems of jamming and friction resistance between the cylinder piston and the cylinder wall.

[0083] It should be further noted that the driving disc 222, the first connecting rod 224 and the adjusting assembly 223 can be metal rigid structures (such as alloy steel), and the output force is only determined by the torque and eccentricity of the second driving part 221, so the output force fluctuation is small. At the same time, the rigid structure has strong impact resistance and can simulate large load of road impact while maintaining stable structure.

[0084] It should be further noted that since the stroke of the second compression assembly 210 is adjustable, it can be adapted to waveform springs 600 of different specifications, thereby improving the application range of the test device.

[0085] Please refer to Figure 4 and Figure 5In some embodiments, the driving disc 222 comprises a disc body 2222 and a driving sleeve 2223, the first adjusting groove 2221 is arranged on the disc body 2222, the driving sleeve 2223 is connected to a side of the disc body 2222 away from the first connecting rod 224 and coaxial with the disc body 2222; the driving sleeve 2223 is provided with a second adjusting groove 2224, the second adjusting groove 2224 penetrates through the side of the driving sleeve 2223 along the radial direction of the driving disc 222 and is arranged in extension along the axial direction of the driving disc 222; the second end 2232 is arranged in the second adjusting groove 2224 and can move in the second adjusting groove 2224; wherein the adjusting assembly 223 is configured to: in the case that the second end 2232 moves in a direction away from the disc body 2222, the first end 2231 moves in a direction close to the axis of the driving disc 222, and in the case that the second end 2232 moves in a direction close to the disc body 2222, the first end 2231 moves in a direction away from the axis of the driving disc 222.

[0086] In the embodiments of the present application, the disc body 2222 is coaxial with the driving sleeve 2223, which ensures the stability of the driving transmission. The driving sleeve 2223 is provided with the second adjusting groove 2224, at this time, the first adjusting groove 2221 and the second adjusting groove 2224 cooperate to accommodate the two ends of the adjusting assembly 223 respectively, which can ensure the stability and reliability in the adjusting process and avoid the deviation of the expected driving effect of the driving assembly 220 caused by the position deviation of the adjusting assembly 223.

[0087] Specifically, the driving sleeve 2223 rotates coaxially with the disc body 2222, which avoids the shaking caused by eccentricity when the driving disc 222 rotates at high speed, ensures that the second end 2232 of the adjusting assembly 223 always moves along the axial direction of the driving disc 222, avoids the deviation of the adjusting track caused by eccentricity, and further ensures that the compression direction of the second compression assembly 210 is always consistent with the stress direction of the wave spring 600, avoids the additional wear of the wave spring 600 caused by stress deviation, and improves the authenticity of the test data. At the same time, the driving sleeve 2223 is provided with the second adjusting groove 2224, the second end 2232 is located in the second adjusting groove 2224 and moves along the axial direction of the driving disc 222, at this time, the second end 2232 of the adjusting assembly 223 is provided with an axial moving track, which avoids the radial deviation, thereby ensuring the one-way controllability of the adjusting action.

[0088] In the embodiment of the present application, the rigid linkage of the second end 2232 moving along the axial direction of the driving disc 222 and the first end 2231 moving along the radial direction of the driving disc 222 can realize that the farther the second end 2232 is from the disc body 2222, the closer the first end 2231 is to the axis of the disc body 2222, and at this time, the stroke of the second compression assembly 210 is smaller; or the closer the second end 2232 is to the disc body 2222, the farther the first end 2231 is from the axis of the disc body 2222, and at this time, the stroke of the second compression assembly 210 is larger, so that the stroke of the second compression assembly 210 can be quantitatively and reliably realized, and the test precision can be effectively improved.

[0089] Meanwhile, the adjusting assembly 223 of the embodiment of the present application can realize dynamic adjustment linkage, that is, by adjusting the position of the second end 2232, the position of the first end 2231 is adjusted correspondingly, so as to adjust the eccentricity of the first connecting rod 224, and in this process, the driving disc 222 can always be in a rotating state, so as to realize dynamic adjustment of the stroke of the second compression assembly 210.

[0090] Please refer to Figure 4 and Figure 5 In some embodiments, the second adjusting groove 2224 is arranged on the side of the driving sleeve 2223 away from the disc body 2222 along the axial direction of the driving disc 222; the adjusting assembly 223 comprises a guide block 2233, a second connecting rod 2234, a sliding block 2235 and a third driving part 2236, the guide block 2233 is slidingly arranged in the first adjusting groove 2221 and is rotationally connected with the first connecting rod 224, and the guide block 2233 forms the first end 2231; the second connecting rod 2234 is arranged on the side of the disc body 2222 away from the first connecting rod 224 and is rotationally connected with the guide block 2233; the sliding block 2235 is slidingly arranged in the second adjusting groove 2224 and is rotationally connected with the second connecting rod 2234; the sliding block 2235 forms the second end 2232; and the third driving part 2236 is at least partially arranged on the side of the driving sleeve 2223 away from the disc body 2222, and the output end of the third driving part 2236 is connected with the sliding block 2235 to drive the sliding block 2235 to move in the second adjusting groove 2224.

[0091] In the embodiment of the present application, the guide block 2233 is embedded in the first adjusting groove 2221 and can move along the radial direction of the driving disc 222, the sliding block 2235 is embedded in the second adjusting groove 2224 and can move along the axial direction of the driving disc 222, the second connecting rod 2234 is rotationally connected with the guide block 2233 and the sliding block 2235 respectively, specifically, the second connecting rod 2234 can be hinged, at this time, the second connecting rod 2234 is used to realize the linkage of the guide block 2233 and the sliding block 2235. The third driving part 2236 is connected with the sliding block 2235 and can drive the sliding block 2235 to reciprocate in the second adjusting groove 2224, that is, to realize the reciprocating movement of the second end 2232 along the axial direction of the driving disc 222, and further to realize the reciprocating movement of the guide block 2233 (the first end 2231) along the radial direction of the driving disc 222. This kind of structure is simple, the transmission effect is good, and the guide block 2233, the second connecting rod 2234 and the sliding block 2235 can all be rigid structures, so that the structural strength and driving stability can be ensured.

[0092] It can be understood that the third driving part 2236 of the embodiment of the present application can be a motor, which can realize accurate control and adjustment of the position of the sliding block 2235.

[0093] As shown in Figure 4 some embodiments, the driving assembly 220 further comprises a first transmission wheel 225 and a second transmission wheel 226, the first transmission wheel 225 is connected to the output end of the second driving part 221, and the second transmission wheel 226 is connected with the driving sleeve 2223, and the second transmission wheel 226 is engaged with the first transmission wheel 225.

[0094] In the embodiment of the present application, by setting the second driving part 221, the first transmission wheel 225 and the second transmission wheel 226 in cooperation, on the one hand, the second driving part 221 can be offset from the central axis of the driving disc 222 to provide a setting space for the third driving part 2236, so as to realize the smooth driving of the third driving part 2236 to move the sliding block 2235. On the other hand, the second driving part 221 drives the first transmission wheel 225 to rotate, the first transmission wheel 225 and the second transmission wheel 226 are engaged and transmitted, then the first transmission wheel 225 drives the second transmission wheel 226 to rotate, the second transmission wheel 226 drives the driving sleeve 2223 to rotate, the disc body 2222 drives the first connecting rod 224 to rotate, and the first connecting rod 224 drives the second compression assembly 210 to reciprocate along the first direction X. The first transmission wheel 225 and the second transmission wheel 226 also play the role of a speed reducer.

[0095] As shown in Figure 10 some embodiments, the length of the first connecting rod 224 is greater than the maximum distance between the first adjusting groove 2221 and the edge of the disc body 2222.

[0096] In the embodiments of the present application, through the above size setting, it can be ensured that the first connecting rod 224 can always extend beyond the edge of the disc body 2222, so as to avoid mechanical interference and ensure smooth movement. In addition, such a setting can provide a larger adjustment space to realize the full rotation of the driving disc 222, so as to ensure the integrity of the stroke of the second compression assembly 210 and meet the dynamic load simulation requirement.

[0097] Please refer to Figure 7 and Figure 8 In some embodiments, the first compression mechanism 100 comprises a first compression assembly 110 and a first driving part 120, the first compression assembly 110 is arranged apart from the second compression assembly 210, the first driving part 120 is arranged on the side of the first compression assembly 110 away from the second compression assembly 210, and the output end of the first driving part 120 is connected with the first compression assembly 110 to drive the first compression assembly 110 to move in the first direction X towards the direction of approaching or moving away from the second compression assembly 210.

[0098] In the embodiments of the present application, the first compression assembly 110 and the second compression assembly 210 are arranged opposite to each other for supporting and fixing the wave spring 600 to realize the compression of the wave spring 600 by the second compression assembly 210. The first driving part 120 is used to drive the first compression assembly 110 to move in the first direction X, so that the wave spring 600 can be in contact with the second compression assembly 210 and the compression test of the wave spring 600 can be realized.

[0099] In the embodiments of the present application, the first driving part 120 can be a combination structure of a motor and a lead screw, the motor drives the lead screw to rotate, the rotation of the lead screw drives the slider on the lead screw to move, the slider is connected with the first sliding plate 111, so as to drive the first sliding plate 111 to move in the first direction X. At this time, the slider on the lead screw can be understood as the output end of the first driving part 120.

[0100] Please refer to Figure 2 , Figure 3 and Figure 9 In some embodiments, a plurality of guide rods 300 are further included, the guide rods 300 are arranged in extension along the first direction X, the plurality of guide rods 300 are arranged apart along the circumference of the first compression mechanism 100 and the second compression mechanism 200, and each guide rod 300 is movably connected with the first compression assembly 110 and the second compression assembly 210.

[0101] In the embodiments of the present application, by arranging the plurality of guide rods 300, the first compression assembly 110 and the second compression assembly 210 can be positioned and guided at multiple points along the circumferential direction of the first compression mechanism 100 and the second compression mechanism 200, so as to effectively constrain the movement direction of the first compression assembly 110 and the second compression assembly 210, avoid compression misalignment, and ensure the accuracy of the opposite compression. Meanwhile, the plurality of guide rods 300 can realize the circumferential dispersion of the stress of the first compression assembly 110 and the second compression assembly 210, reduce the local stress, and be beneficial to prolong the service life of the first compression assembly 110 and the second compression assembly 210. Meanwhile, the multiple-point positioning can suppress the shaking during the compression process and improve the operation stability.

[0102] Please refer to Figure 6 , Figure 7 and Figure 8 In some embodiments, the first compression assembly 110 includes a first sliding plate 111 connected to the output end of the first driving part 120 and in sliding connection with the plurality of guide rods 300; the second compression assembly 210 includes a second sliding plate 211 connected to the output end of the driving assembly 220 and arranged in spaced relation with the first sliding plate 111; and the second sliding plate 211 is in sliding connection with the plurality of guide rods 300.

[0103] In the embodiments of the present application, the first sliding plate 111 and the second sliding plate 211 are used to support and compress the wave spring 600, provide a stable compression plane, realize uniform contact and pressure application, and ensure the test stability and accuracy of the wave spring 600.

[0104] Please refer to Figure 6 , Figure 7 , Figure 8 and Figure 9In some embodiments, the first compression assembly 110 further comprises a plurality of first plate bodies 112 connected to the first sliding plate 111 on a side close to the second sliding plate 211 and arranged around the circumference of the first sliding plate 111; the first sliding plate 111 has a plurality of first avoiding grooves 1111, each of which is arranged between two adjacent first plate bodies 112; the second compression assembly 210 further comprises a plurality of second plate bodies 212 connected to the second sliding plate 211 on a side close to the first sliding plate 111 and arranged around the circumference of the second sliding plate 211; the second sliding plate 211 has a plurality of second avoiding grooves 2111, each of which is arranged between two adjacent second plate bodies 212; along the first direction X, the first plate bodies 112 are arranged in a staggered manner with the second plate bodies 212, and in the case that the second compression assembly 210 moves along the first direction X towards the first compression assembly 110, the first plate bodies 112 are arranged in the second avoiding grooves 2111, the second plate bodies 212 are arranged in the first avoiding grooves 1111, and each first plate body 112 covers the gap between two adjacent second plate bodies 212, so as to form an enclosed space 400 between the first compression assembly 110 and the second compression assembly 210.

[0105] In the embodiments of the present application, by arranging a plurality of first plate bodies 112 on the side of the first sliding plate 111 close to the second sliding plate 211, and arranging a plurality of second plate bodies 212 on the side of the second sliding plate 211 close to the first sliding plate 111, and arranging first avoiding holes on the first sliding plate 111 for the second plate bodies 212 to pass through, and arranging second avoiding holes on the second sliding plate 211 for the first plate bodies 112 to pass through, when the second sliding plate 211 moves towards the first sliding plate 111, the first plate bodies 112 are arranged in the second avoiding grooves 2111, the second plate bodies 212 are arranged in the first avoiding grooves 1111, and each first plate body 112 covers the gap between two adjacent second plate bodies 212, so as to form an enclosed space 400 between the first compression assembly 110 and the second compression assembly 210, and the wave spring 600 is repeatedly compressed in the enclosed space 400. The enclosed space 400 surrounded by the first sliding plate 111, the second sliding plate 211, the plurality of first plate bodies 112 and the plurality of second plate bodies 212 can protect the wave spring 600 from flying out when the wave spring 600 is broken and damaged, and play a safety protection role.

[0106] As shown in Figure 9 In some embodiments, the first compression mechanism 100 further comprises a heating portion 130 arranged on the side of the first sliding plate 111 away from the second sliding plate 211, and the heating portion 130 can heat the enclosed space 400 after the first compression assembly 110 and the second compression assembly 210 form the enclosed space 400.

[0107] In the embodiment of the present application, when the friction plate contacts the brake disc during braking, the instantaneous temperature can reach above 300℃, and the heat is transmitted to the wave spring 600 through the caliper, so that the working temperature of the wave spring 600 quickly rises to 100-150℃, and the high temperature also has an impact on the service life of the wave spring 600. Therefore, the heating part 130 is arranged in the embodiment of the present application, which can heat the enclosed space 400 after the first compression assembly 110 and the second compression assembly 210 form the enclosed space 400, so as to increase the temperature in the enclosed space 400, and then increase the temperature around the wave spring 600, and then simulate the service life of the wave spring 600 under different ambient temperatures, so as to further increase the working conditions that can be simulated by the test device, thereby effectively improving the test precision.

[0108] It should be noted that the heating part 130 is located on the side of the first sliding plate 111 away from the second sliding plate 211, which can avoid direct contact between the heating part 130 and the wave spring 600, especially to avoid the broken wave spring 600 from damaging the electric heating part 130 during the experiment, which has a protective effect on the electric heating part 130.

[0109] It can be understood that the heating part 130 of the embodiment of the present application can be a heating coil, a heating resistance wire, or a heating film and the like.

[0110] Please refer to Figure 7 , Figure 8 and Figure 9 In some embodiments, the first compression mechanism 100 further comprises a sealing part 140 and a telescopic air bag 160, the sealing part 140 is connected to the side of the first sliding plate 111 away from the second sliding plate 211, and surrounds the first sliding plate 111 to form a gas guiding space 150; the sealing part 140 has a first gas guiding hole 141, the first gas guiding hole 141 is in communication with the gas guiding space 150; the heating part 130 is located in the gas guiding space 150; the telescopic air bag 160 is connected to the side of the sealing part 140 away from the first sliding plate 111, the first gas guiding hole 141 is in communication with the telescopic air bag 160; the first sliding plate 111 is provided with a second gas guiding hole 1112, the second gas guiding hole 1112 is in communication with the enclosed space 400 and the gas guiding space 150 respectively.

[0111] In the embodiment of the present application, by arranging the sealing part 140 and the telescopic air bag 160, the pressure in the enclosed space 400 can be balanced during the reciprocating movement of the second compression assembly 210, and the air pressure in the enclosed space 400 can be kept stable.

[0112] Specifically, the sealing part 140 is configured to provide a sealed space for the heating part 130, so as to avoid heat loss of the heating part 130, and more heat can be transferred into the closed space 400 through the first air guide hole 141 and the first sliding plate 111. Meanwhile, the elastic air bag 160 is inflated to inhale air when the second compression assembly 210 is pressed, and the elastic air bag 160 is contracted to release air when the second compression assembly 210 is lifted, so that the air pressure in the closed space 400 can be kept stable.

[0113] Please refer to Figure 1 、 Figure 2 and Figure 9 In some embodiments, the cabinet 500 is further included, and the first compression mechanism 100, the second compression mechanism 200 and the plurality of guide rods 300 are arranged in the cabinet 500. The guide rods 300, the driving assembly 220 and the first driving part 120 are connected with the cabinet 500.

[0114] In the embodiments of the present application, the cabinet 500 is configured to fix the guide rods 300 and provide a relatively closed working space for the first compression mechanism and the second compression mechanism, so as to avoid interference from external factors and improve safety.

[0115] In the embodiments of the present application, when the first compression assembly 110 is located at the bottom of the cabinet 500 and the second compression assembly 210 is away from the first compression assembly 110 before the initial test. When in use, the wave spring 600 is placed on the first sliding plate 111, the output end of the first driving part 120 drives the first sliding plate 111 to move along the guide rod 300 to the second sliding plate 211, the first sliding plate 111 drives the wave spring 600 and the first plate body 112 to move along the first direction X to the second sliding plate 211, so that the second plate body 212 is arranged in the first avoiding slot 1111, and the first plate body 112 is arranged in the second avoiding slot 2111. The plurality of first plate bodies 112, the plurality of second plate bodies 212, the first sliding plate 111 and the second sliding plate 211 enclose the closed space 400, and the wave spring 600 is located in the closed space 400. The second driving part 221 drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the driving sleeve 2223 to rotate, the driving sleeve 2223 drives the disc body 2222 to rotate, the disc body 2222 drives the guide block 2233 to revolve around the axis of the disc body 2222. Under the guidance of the guide rod 300, the revolving guide block 2233 drives the second sliding plate 211 to reciprocate along the first direction X through the first connecting rod 224. The reciprocating second sliding plate 211, in cooperation with the first sliding plate 111, compresses and releases the wave spring 600. The reciprocating state of the second sliding plate 211 in cooperation with the driving assembly 220 is shown in Figure 10 and Figure 11 .

[0116] The test device of the embodiment of the present application can also adjust the working environment of the wave spring 600. In this way, the wave spring 600 is tested under different working conditions, and better test results can be achieved, and the test accuracy is improved.

[0117] One is to adjust the compression amount of the wave spring 600: the third driving part 2236 drives the sliding block 2235 to move along the axial direction of the driving disc 222, and then adjusts the position of the sliding block 2235 in the second adjusting groove 2224. The sliding block 2235 drives or pulls the guide block 2233 to move in the first adjusting groove 2221 through the second connecting rod 2234, and then adjusts the position of the guide block 2233 in the first adjusting groove 2221, that is, the revolution radius of the guide block 2233, so as to adjust the amplitude of the up-down movement of the second sliding plate 211, and then adjust the compression amount of the wave spring 600, and then simulate the service life of the wave spring 600 under different working conditions.

[0118] Another is to adjust the environmental temperature of the wave spring 600: in the process of reciprocating movement of the second sliding plate 211, the closed space 400 is heated by opening the heating part 130, the temperature of the closed space 400 is raised, and then the temperature of the wave spring 600 is raised, so as to simulate the service life of the wave spring 600 under different environmental temperatures.

[0119] In the test process of the wave spring 600, the embodiment of the present application can not only realize the test under the general disclosure, but also realize the simulation of different working conditions of the wave spring 600, and at the same time realize the simulation of the service life of the wave spring 600 under different environmental temperatures. In this way, the accuracy of the test of the wave spring 600 can be effectively improved, and the test process does not need to be stopped, and then the test of the wave spring 600 can be continuously carried out, and the test efficiency of the wave spring 600 is improved.

[0120] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0121] The wave spring life test device provided by the embodiment of the present application is described in detail, and the principle and implementation manner of the present application are described by using specific examples. The above embodiment is only used to help understand the technical scheme and core idea of the present application; those skilled in the art should understand that the technical scheme recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the present application.

Claims

1. A wave spring life testing apparatus characterized by comprising: The first compression mechanism (100) and the second compression mechanism (200) are provided; The second compression mechanism (200) comprises: A second compression assembly (210) is arranged at a position away from the first compression mechanism (100) along a first direction (X); A driving assembly (220) is arranged at a position away from the first compression mechanism (100) on a side of the second compression assembly (210) and is movably connected with the second compression assembly (210); The driving assembly (220) is configured to drive the second compression assembly (210) to move towards or away from the first compression mechanism (100) along the first direction (X) and to adjust the stroke of the second compression assembly (210) during the movement of the second compression assembly (210).

2. The wave spring life testing apparatus of claim 1, wherein The driving assembly (220) comprises: A second driving part (221); A driving disc (222) is connected with the output end of the second driving part (221); the driving disc (222) has a first adjusting groove (2221) penetrating through the driving disc (222) along the axial direction of the driving disc (222) and extending along the radial direction of the driving disc (222); the center of the driving disc (222) is located outside the first adjusting groove (2221); An adjusting assembly (223) comprises opposite first and second ends (2231) and (2232); the first end (2231) is movably arranged in the first adjusting groove (2221); the second end (2232) is connected with the driving disc (222) and can move along the axial direction of the driving disc (222); A first connecting rod (224) is rotatably connected with the first end (2231) at one end and rotatably connected with the second compression assembly (210) at the other end.

3. The wave spring life testing apparatus of claim 2, wherein The driving disc (222) comprises: A disc body (2222) on which the first adjusting groove (2221) is arranged; A driving sleeve (2223) is connected with the disc body (2222) at a position away from the first connecting rod (224) and has a common center axis with the disc body (2222); the driving sleeve (2223) is provided with a second adjusting groove (2224) penetrating through the side surface of the driving sleeve (2223) along the radial direction of the driving disc (222) and extending along the axial direction of the driving disc (222); the second end (2232) is arranged in the second adjusting groove (2224) and can move in the second adjusting groove (2224); The adjusting assembly (223) is configured to move the first end (2231) towards the center of the driving disc (222) when the second end (2232) moves away from the disc body (2222) and to move the first end (2231) away from the center of the driving disc (222) when the second end (2232) moves towards the disc body (2222).

4. The wave spring life test device according to claim 3, wherein the second adjusting groove (2224) penetrates through the drive sleeve (2223) along the axial direction of the drive disc (222) and is away from one side of the disc body (2222); the adjusting assembly (223) comprises: a guide block (2233) slidingly arranged in the first adjusting groove (2221) and rotatably connected with the first connecting rod (224), the guide block (2233) forming the first end (2231); a second connecting rod (2234) arranged on the side of the disc body (2222) away from the first connecting rod (224) and rotatably connected with the guide block (2233); a sliding block (2235) slidingly arranged in the second adjusting groove (2224) and rotatably connected with the second connecting rod (2234), the sliding block (2235) forming the second end (2232); and a third driving part (2236) at least partially arranged on the side of the drive sleeve (2223) away from the disc body (2222), an output end of the third driving part (2236) connected with the sliding block (2235) to drive the sliding block (2235) to move in the second adjusting groove (2224). The drive assembly (220) further comprises: a first transmission wheel (225) connected with the output end of the second driving part (221); and a second transmission wheel (226) connected with the drive sleeve (2223), the second transmission wheel (226) meshing with the first transmission wheel (225). The length of the first connecting rod (224) is greater than the maximum distance between the first adjusting groove (2221) and the edge of the disc body (2222). The first compression mechanism (100) comprises: a first compression assembly (110) arranged apart from the second compression assembly (210); and a first driving part (120) arranged on the side of the first compression assembly (110) away from the second compression assembly (210), an output end of the first driving part (120) connected with the first compression assembly (110) to drive the first compression assembly (110) to move along the first direction (X) to approach or move away from the second compression assembly (210). Further comprising a plurality of guide rods (300) extending along the first direction (X), the guide rods (300) being arranged apart from each other along the circumferential direction of the first compression mechanism (100) and the second compression mechanism (200), and each of the guide rods (300) being movably connected with the first compression assembly (110) and the second compression assembly (210) respectively.

9. The wave spring life test device according to claim 8, wherein the first compression assembly (110) comprises a first sliding plate (111) connected with the output end of the first driving part (120) and slidingly connected with the guide rods (300). ​ 5. The wave spring life testing apparatus of claim 3, wherein ​ ​ ​ 6. The wave spring life testing apparatus of claim 3, wherein ​ 7. The wave spring life testing apparatus of claim 1, wherein ​ ​ ​ 8. The wave spring life testing apparatus of claim 7, wherein ​ ​ ​ The second compression assembly (210) comprises a second sliding plate (211) connected to the output end of the driving assembly (220) and arranged in a spaced manner with the first sliding plate (111); the second sliding plate (211) is slidably connected with a plurality of guide rods (300).

10. The wave spring life test device according to claim 9, wherein, The first compression assembly (110) further comprises a plurality of first plate bodies (112) connected to one side of the first sliding plate (111) close to the second sliding plate (211) and arranged in a spaced manner around the circumference of the first sliding plate (111); the first sliding plate (111) is provided with a plurality of first avoiding grooves (1111), each of which is arranged between two adjacent first plate bodies (112); The second compression assembly (210) further comprises a plurality of second plate bodies (212) connected to one side of the second sliding plate (211) close to the first sliding plate (111) and arranged in a spaced manner around the circumference of the second sliding plate (211); the second sliding plate (211) is provided with a plurality of second avoiding grooves (2111), each of which is arranged between two adjacent second plate bodies (212); Along the first direction (X), the first plate bodies (112) and the second plate bodies (212) are arranged in a staggered manner, and in the case that the second compression assembly (210) moves along the first direction (X) towards the first compression assembly (110), the first plate bodies (112) are arranged in the second avoiding grooves (2111), the second plate bodies (212) are arranged in the first avoiding grooves (1111), and each first plate body (112) covers the gap between two adjacent second plate bodies (212) to form an enclosed space (400) between the first compression assembly (110) and the second compression assembly (210).

11. The wave spring life testing apparatus of claim 10, wherein, The first compression mechanism (100) further comprises a heating portion (130) arranged on one side of the first sliding plate (111) away from the second sliding plate (211), which can heat the enclosed space (400) after the first compression assembly (110) and the second compression assembly (210) form the enclosed space (400).

12. The wave spring life testing apparatus of claim 11, wherein, The first compression mechanism (100) further comprises: a sealing portion (140) connected to one side of the first sliding plate (111) away from the second sliding plate (211) and surrounding the first sliding plate (111) to form a gas guiding space (150); the sealing portion (140) is provided with a first gas guiding hole (141) in communication with the gas guiding space (150); the heating portion (130) is located in the gas guiding space (150); A telescopic air bag (160) is connected to the side of the sealing part (140) away from the first sliding plate (111), and the first air guide hole (141) is in communication with the telescopic air bag (160); The first sliding plate (111) is provided with a second air guide hole (1112) in communication with the closed space (400) and the air guide space (150) respectively.

13. The wave spring life testing apparatus of claim 8, wherein, Further comprising a cabinet body (500), the first compression mechanism (100), the second compression mechanism (200) and a plurality of the guide rods (300) are arranged in the cabinet body (500), and the guide rod (300), the driving assembly (220) and the first driving part (120) are connected with the cabinet body (500).

Images