Abnormal sound detection device and abnormal sound detection method for shock absorber

Abstract

The invention relates to an abnormal sound detection device and method of a shock absorber, and the device comprises a rotating disc which is provided with a first fixing part of the shock absorber; the driving mechanism is connected to the rotating disc, and the driving mechanism drives the rotating disc to rotate around the axis of the rotating disc; and the supporting frame body comprises a vertical rod and a transverse rod connected to the vertical rod, the transverse rod and the rotating disc are arranged up and down, and the transverse rod is provided with a shock absorber mounting assembly. The shock absorber is fixed to the shock absorber first fixing piece of the rotating disc and the shock absorber mounting assembly connected to the cross rod, the shock absorber synchronously rotates around the axis of the rotating disc in the process that the driving mechanism drives the rotating disc to rotate around the axis of the rotating disc, the rotating process of the automobile front shock absorber under the real automobile running working condition is simulated, and the testing accuracy is improved. The technical problem that abnormal sound possibly generated in the rotating process is not detected in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of shock absorber testing, and in particular to an abnormal noise detection device and an abnormal noise detection method for a shock absorber. Background Art

[0002] Automobile shock absorbers can accelerate the attenuation of frame and body vibrations to improve the ride smoothness of the car. In order to ensure that its quality and performance meet the standards and ensure safety in use, major manufacturers need to test the performance of shock absorbers during the development stage.

[0003] In the related art, a testing fixture is usually used to detect the longitudinal expansion and contraction degree of the shock absorber and the abnormal noise that may be generated during the longitudinal movement. However, during the movement of the vehicle, the front shock absorber of the automobile may produce abnormal noises in addition to the longitudinal expansion and contraction movement, as well as during the rotation process. Summary of the invention

[0004] The present application provides an abnormal noise detection device and an abnormal noise detection method for a shock absorber, which can solve the technical problem in the related art that during the detection process of the front shock absorber of an automobile, only the abnormal noise that may be generated during the longitudinal movement is detected, but the abnormal noise that may be generated during the rotation process is not detected.

[0005] In the first aspect, an embodiment of the present application provides an abnormal noise detection device for a shock absorber, comprising: a rotating disk, on which a first fixing member of a shock absorber is installed; a driving mechanism, which is connected to the rotating disk and drives the rotating disk to rotate around the axis of the rotating disk; a supporting frame, which comprises a vertical rod and a horizontal rod connected to the vertical rod, the horizontal rod and the rotating disk are arranged up and down, and the horizontal rod is equipped with a shock absorber mounting assembly.

[0006] In combination with the first aspect, in one embodiment, the shock absorber mounting assembly includes: a through-set, the through-set is sleeved on the cross bar, and the through-set is connected to a cross bar fixing member, and the through-set is fixed to the cross bar via the cross bar fixing member; a shock absorber second fixing member, the shock absorber second fixing member is hinged to the through-set through a rotating shaft, and the axis of the rotating shaft is perpendicular to the axis of the rotating disk.

[0007] In combination with the first aspect, in one embodiment, the through-set is provided with a threaded hole, the cross bar fixing piece is passed through the threaded hole and is threadedly connected to the through-set; one end of the cross bar fixing piece abuts against the cross bar, and a fastening handle is fixed to the other end.

[0008] In combination with the first aspect, in one implementation, the abnormal sound detection device further includes a vertical adjustment mechanism, which is mounted on the vertical rod and fixed to the cross rod, and drives the cross rod to move axially along the vertical rod.

[0009] In combination with the first aspect, in one embodiment, the vertical rod has a cavity, the vertical rod is provided with a sliding groove connected to the cavity, the sliding groove extends along the axial direction of the vertical rod, and the cross rod is passed through the sliding groove; the vertical adjustment mechanism includes an adjustment rack, the adjustment rack is accommodated in the cavity, and the adjustment rack is fixed to the cross rod; the vertical adjustment mechanism also includes an adjustment gear, the adjustment gear is connected to the vertical rod through a connecting rod, and the adjustment gear is meshed with the adjustment rack, and the adjustment gear drives the cross rod to move along the sliding groove.

[0010] In combination with the first aspect, in one implementation, through holes are provided on opposite sides of the vertical rod, two ends of the connecting rod respectively pass through the through holes on the opposite sides, and an operating panel is fixed to one end of the connecting rod.

[0011] In combination with the first aspect, in one embodiment, the abnormal sound detection device further includes a fixing seat, the fixing seat is connected to a bearing, and one end of the bearing away from the fixing seat is fixed to the rotating disk;

[0012] The driving mechanism comprises a motor, the motor and the fixing seat are spaced apart, a motor gear is fixed to the motor, and the motor gear and the rotating disk are connected through a transmission chain.

[0013] In combination with the first aspect, in one implementation, the first fixing member of the shock absorber is provided with a through groove, and the through groove extends along the axial direction of the rotating disk.

[0014] On the second aspect, the embodiment of the present application provides an abnormal sound detection method using the above-mentioned abnormal sound detection device, characterized in that it includes the following steps: fixing the two ends of the shock absorber to the first fixing part of the shock absorber and the shock absorber mounting assembly respectively; driving the rotating disk to rotate clockwise and counterclockwise around its axis for a certain angle respectively, and repeating the rotation a preset number of times; judging whether the shock absorber is qualified based on whether the shock absorber makes a sound during the rotation process, if there is an abnormal sound, it is unqualified, and if there is no abnormal sound, it is qualified.

[0015] In combination with the second aspect, in one embodiment, the cross bar is provided with a through-set sleeve, and the through-set sleeve is hinged with a second shock absorber fixing member connected to the shock absorber. After the driving rotating disk is rotated to the left or right around its axis by a certain angle and repeated for a preset number of times, it includes: moving the through-set sleeve along the cross bar toward a first direction by a preset distance, driving the rotating disk to rotate to the left or right by a certain angle around its axis and repeated for a preset number of times; moving the through-set sleeve along the cross bar toward a second direction by a preset distance, driving the rotating disk to rotate to the left or right by a certain angle and repeated for a preset number of times, wherein the first direction is opposite to the second direction.

[0016] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0017] The shock absorber is respectively fixed to the first shock absorber fixing part of the rotating disk and the shock absorber mounting assembly connected to the cross bar to simulate the installation method of the front shock absorber in the actual vehicle. In the process of the driving mechanism driving the rotating disk to rotate around the axis of the rotating disk, the shock absorber also rotates around the axis of the rotating disk synchronously, that is, the rotation process of the front shock absorber of the automobile under the actual vehicle operating conditions is simulated, that is, the abnormal noise that may be generated by the front shock absorber during the rotation process is detected, which solves the technical problem that the detection in the related technology only detects the abnormal noise that may be generated during the longitudinal movement, but does not detect the abnormal noise that may be generated during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a structure in which a shock absorber provided in an embodiment of the present application is fixed to an abnormal sound detection device;

[0020] Figure 2 A schematic diagram of the front view of the structure of the rotating disk connected to the fixing seat provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the front view structure of the vertical adjustment mechanism provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of a top view of the support frame provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of the side structure of the support frame provided in an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the structure of the adjustment rack connecting the cross bar provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the front view of the shock absorber mounting assembly provided in an embodiment of the present application;

[0026] Figure 8 A schematic diagram of the side structure of a shock absorber mounting assembly provided in an embodiment of the present application;

[0027] Fig. 9 This is a schematic diagram of the front view of the structure in which the connecting member provided in the embodiment of the present application is hinged to the pin.

[0028] In the figure:

[0029] 1. rotating disk; 11. first fixing member of shock absorber; 111. through groove;

[0030] 21. Motor; 22. Motor gear; 23. Transmission chain;

[0031] 3. Support frame; 31. Vertical rod; 311. Cavity; 32. Cross rod;

[0032] 4. Shock absorber installation assembly; 41. Insertion kit; 42. Crossbar fixing piece; 43. Shock absorber second fixing piece; 44. Fastening handle; 45. Latch; 46. Ear plate; 47. Connector;

[0033] 5. Vertical adjustment mechanism; 51. Adjustment rack; 52. Adjustment gear; 53. Connecting rod; 54. Operation panel; 55. Screw-on;

[0034] 6. Fixed seat;

[0035] 7. Bearings;

[0036] 8. Shock absorber. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] An embodiment of the present application provides an abnormal noise detection device for a shock absorber, which can solve the technical problem in the related art that during the detection process of the front shock absorber of an automobile, only abnormal noise that may be generated during the longitudinal movement is detected, but abnormal noise that may be generated during the rotation process is not detected.

[0039] See also Figure 1 As shown, an abnormal sound detection device for a shock absorber provided in an embodiment of the present application is characterized in that it may include: a rotating disk 1, the rotating disk 1 is equipped with a first shock absorber fixing member 11; a driving mechanism, the driving mechanism is connected to the rotating disk 1, and the driving mechanism drives the rotating disk 1 to rotate around the axis of the rotating disk 1, the driving mechanism may be a driving motor 21, or may be other devices that can drive the rotating disk 1 to rotate around the axis of the rotating disk 1; a supporting frame 3, the supporting frame 3 includes a vertical rod 31 and a cross rod 32 connected to the vertical rod 31, the cross rod 32 and the rotating disk 1 are arranged up and down, and the cross rod 32 is equipped with a shock absorber mounting assembly 4, when detection is required, the two ends of the shock absorber 8 can be fixed on the first shock absorber fixing member 11 and the shock absorber mounting assembly 4 respectively.

[0040] The embodiment of the present application fixes the shock absorber to the first shock absorber fixing member 11 of the rotating disk 1 and the shock absorber mounting assembly 4 connected to the cross bar 32, so it can be used to detect the abnormal noise that may exist in the front shock absorber of the automobile during the rotation process of the automobile. In order to more realistically simulate the installation of the front shock absorber, the front shock absorber can be specifically fixed to the first shock absorber fixing member 11 and the shock absorber mounting assembly 4, and the cross bar 32 is supported and arranged above the rotating disk 1 by the vertical rod 31. In the process of the driving mechanism driving the rotating disk 1 to rotate around the axis of the rotating disk 1, the shock absorber 8 also rotates around the axis of the rotating disk 1 synchronously. The lower end of the front shock absorber is usually fixed on the wheel or the control arm of the wheel. Therefore, the rotation of the rotating disk 1 simulates the rotation of the front shock absorber that may occur during the rotation of the wheel of the automobile under the actual vehicle operation condition. In the embodiment of the present application, when the driving mechanism is used to rotate the rotating disk 1, it can be rotated several times, and whether the front shock absorber is qualified can be judged by whether abnormal noise occurs during the rotation process. In the embodiment of the present application, the abnormal noise that may be generated during the rotation of the front shock absorber is detected, which solves the technical problem that the detection in the related art only detects the abnormal noise that may be generated during the longitudinal movement, but does not detect the abnormal noise that may be generated during the rotation process.

[0041] In some optional embodiments, the shock absorber mounting assembly 4 may include: a through-set 41, wherein the through-set 41 is sleeved on the cross bar 32, and the through-set 41 is connected to a cross bar fixing member 42, wherein the through-set 41 is fixed to the cross bar 32 via the cross bar fixing member 42, wherein the inner diameter of the through-set 41 may be slightly larger than the outer diameter of the cross bar 32, so that the through-set 41 may move along the cross bar 32, and further, under the action of the cross bar fixing member 42, the through-set 41 may be fixed relative to the cross bar 32; a shock absorber second fixing member 43, wherein the shock absorber second fixing member 43 is hinged to the through-set 41 via a rotating shaft, wherein the axis of the rotating shaft is perpendicular to the axis of the rotating disk 1, and the axis of the rotating shaft is perpendicular to the axial direction of the rotating disk 1, which can ensure that during the rotation of the rotating disk 1, the end of the front shock absorber fixed to the shock absorber second fixing member 43 will not rotate with the rotating disk 1, thereby enhancing the authenticity of the detection result. In the embodiment of the present application, the second fixing member 43 of the shock absorber is connected to the cross bar 32 through the through-set 41, so that the end of the front shock absorber fixed to the second fixing member 43 of the shock absorber can also move relative to the cross bar 32. During the assembly or actual use of the automobile, the installation accuracy of the front shock absorber may not be particularly accurate, and a certain error in the installation of the front shock absorber is usually allowed. Products within this error range are qualified. Therefore, the end of the front shock absorber fixed to the second fixing member 43 of the shock absorber can move relative to the cross bar 32. The driving conditions of the front shock absorber within the error range can be simulated, thereby enhancing the accuracy of the detection results.

[0042] Preferably, see Figures 7 to 9 As shown, the second fixing member 43 of the shock absorber is hinged to the through-set member 41 by means of a latch 45. Specifically, two or more ear plates 46 may be provided on the side of the through-set member 41 close to the rotating disk 1. The ear plates 46 are all provided with connecting holes. The axes of the connecting holes are all perpendicular to the extension direction of the cross bar 32. The latches 45 are passed through the multiple connecting holes. The second fixing member 43 of the shock absorber is also hinged to the latch 45 by means of a connecting member 47. The connecting member 47 and the second fixing member 43 of the shock absorber may be fixed to each other or hinged.

[0043] In some optional embodiments, the through-set 41 is provided with a threaded hole, and the crossbar fixing member 42 is provided in the threaded hole and is threadedly connected with the through-set 41; one end of the crossbar fixing member 42 abuts against the crossbar 32, and a fastening handle 44 is fixed to the other end, that is, in the embodiment of the present application, the through-set 41 is fixed relative to the crossbar 32 by the crossbar fixing member 42 abutting against the crossbar 32, and the fastening handle 44 can be more convenient for screwing the crossbar fixing member 42. In some other embodiments, the crossbar fixing member 42 can also fix the through-set 41 to the crossbar 32 by providing a plurality of through holes at intervals on the crossbar 32 along the length direction of the crossbar 32, and the opposite sides of the through-set 41 are also provided with corresponding through holes, and when the through holes of the crossbar 32 correspond to the through holes of the through-set 41, the crossbar fixing member 42 is respectively provided in the corresponding through holes of the crossbar 32 and the through holes of the through-set 41.

[0044] In some optional embodiments, the abnormal sound detection device also includes a vertical adjustment mechanism 5, which is installed on the vertical rod 31, and the vertical adjustment mechanism 5 is fixed to the cross rod 32, and drives the cross rod 32 to move axially along the vertical rod 31. That is to say, under the action of the vertical adjustment mechanism 5, the height of the cross rod 32 can be changed, that is, the distance between the cross rod 32 and the rotating disk 1 can be changed, so that the abnormal sound detection device can be adapted to a variety of different models of front shock absorbers, thereby enhancing the adaptability of the abnormal sound detection device.

[0045] See also Figure 3 As shown, in some optional embodiments, the vertical rod 31 has a cavity 311, the vertical rod 31 is provided with a sliding groove connected to the cavity 311, the sliding groove extends along the axial direction of the vertical rod 31, and the cross bar 32 is penetrated by the sliding groove; the vertical adjustment mechanism 5 includes an adjustment rack 51, the adjustment rack 51 is accommodated in the cavity 311, and the cross bar 32 is inserted into the sliding groove; the vertical adjustment mechanism 5 includes an adjustment rack 51, and the adjustment rack 51 is accommodated in the cavity 311, and the cross bar 32 is inserted into the vertical adjustment mechanism 5; Figure 6 As shown, the adjustment rack 51 is fixed to the cross bar 32; the vertical adjustment mechanism 5 also includes an adjustment gear 52, which is connected to the vertical bar 31 through a connecting rod 53, and the adjustment gear 52 is meshed with the adjustment rack 51, and the adjustment gear 52 drives the cross bar 32 to move along the sliding groove. In the embodiment of the present application, the adjustment gear 52 is meshed with the adjustment rack 51, thereby driving the cross bar 32 to move along the sliding groove, which can make the adjustment accuracy of the cross bar 32 higher and the adjustment more convenient. In some other embodiments, a fixed ring body can be arranged on the vertical bar 31, and the fixed ring body is fixed to the cross bar 32, and the height of the cross bar 32 can be adjusted by adjusting the position of the fixed ring body on the vertical bar 31.

[0046] See also Figure 4 and Figure 5As shown, in some optional embodiments, through holes are opened on opposite sides of the vertical rod 31, and the two ends of the connecting rod 53 respectively pass through the through holes on the opposite sides, and an operating disk 54 is fixed to one end of the connecting rod 53, that is, the connecting rod 53 and the adjusting gear 52 can be fixed to each other, and the connecting rod 53 can be passed through the center of the adjusting gear 52, and the connecting rod 53 and the adjusting gear 52 are coaxially arranged. When the connecting rod 53 is rotated around the axial direction of the connecting rod 53, the adjusting gear 52 also rotates synchronously, and the operating disk can be fixed at one end of the connecting rod 53, so that the connecting rod 53 can be rotated more easily, saving manpower. Preferably, the vertical adjustment mechanism 5 may further include a longitudinal fixing device, which may be configured to have the same structure as the cross bar fixing member 42 and the tightening handle 44. In this case, the longitudinal fixing device includes a longitudinal fixing member and a screw member 55 fixed to the longitudinal fixing member. The longitudinal fixing member may be threadedly connected to the side wall of the vertical rod 31, and one end away from the screw member 55 abuts against the adjustment rack 51. The longitudinal fixing member and the adjustment gear 52 cooperate to fix the adjustment rack 51 at a fixed height.

[0047] In some optional embodiments, the abnormal sound detection device also includes a fixed seat 6, the fixed seat 6 is connected to a bearing 7, and the end of the bearing 7 away from the fixed seat 6 is fixed to the rotating disk 1; the driving mechanism includes a motor 21, the motor 21 is spaced apart from the fixed seat 6, and the motor 21 is fixed with a motor gear 22, and the motor gear 22 and the rotating disk 1 are connected through a transmission chain 23. In the embodiment of the present application, the fixed seat 6 is spaced apart from the vertical rod 31, and a mounting hole is opened in the fixed seat 6, and the bearing 7 is fixed to the fixed seat 6 through the mounting hole, and at this time the bearing 7 is supported on the rotating disk 1. The motor gear 22 and the rotating disk 1 are connected by a transmission chain 23, that is to say, the transmission chain 23 surrounds the motor gear 22 and the rotating disk 1 respectively. The motor gear 22 rotates under the drive of the motor 21, and then the transmission chain 23 can drive the rotating disk 1 to rotate. In the process of detecting the front shock absorber using the abnormal sound detection device, it is usually necessary to simulate the use environment of the front shock absorber in the car. Therefore, the rotation angle of the rotating disk 1 can also correspond to the deflection angle of the front shock absorber during driving of the car. At this time, the motor 21 drives the rotating disk 1 to rotate through the transmission chain 23, which can facilitate the control of the rotation angle of the rotating disk 1.

[0048] Preferably, see Figure 2As shown, the first fixing member 11 of the shock absorber is provided with a through groove 111, and the through groove 111 extends along the axial direction of the rotating disk 1. The first fixing member can be set as a column structure. The first fixing member is fixed on the side of the rotating disk 1 away from the bearing 7, and the axis of the first fixing member is set parallel to the axis of the rotating disk 1. The through groove 111 extends along the axial direction of the rotating disk 1, that is, the through groove 111 is provided in the length direction of the first fixing member. In order to facilitate the connection with the wheel or the control arm of the wheel, one end of the front shock absorber is usually fixed with a connecting plate, and a through hole is provided on the connecting plate. In the embodiment of the present application, the through groove 111 can be used to utilize the connecting plate structure of the end of the front shock absorber itself to fix the front shock absorber to the first fixing member. After the through hole is placed at the position corresponding to the through groove 111, a screw is passed through the through groove 111 and the through hole. After the screw passes through the through groove 111, it can be fixed by tightening it with a nut. The positions of the holes on the connecting plates of various front shock absorbers may be different to some extent, so a through slot 111 is provided in the length direction of the first fixing member so that the first fixing member can be fixed to various different types of front shock absorbers.

[0049] The embodiment of the present application also provides an abnormal sound detection method using the abnormal sound detection device described above, which may include the following steps:

[0050] S1: Fix the two ends of the shock absorber 8 to the first shock absorber fixing member 11 and the shock absorber mounting assembly 4 respectively. The shock absorber can be assembled according to the hard point coordinate positions of the upper and lower end points of the shock absorber 8 under the maximum counterweight of the test vehicle. After the shock absorber 8 is adjusted and installed on the abnormal sound detection device, the shock absorber 8 is kept vertical in the longitudinal direction.

[0051] S2: Drive the rotating disk 1 to rotate clockwise and counterclockwise around its axis for a certain angle, and repeat the rotation for a preset number of times, that is, control the motor 21 to rotate left and right, drive the rotating disk 1 to rotate, and let the shock absorber 8 rotate 45° to the left and 45° to the right relative to the origin. Repeat this rotation for 50,000 times, and track 50 rotation conditions at 0 times, 25,000 times, and 50,000 times respectively to see if there is any abnormal sound.

[0052] S3: judging whether the shock absorber 8 is qualified according to whether the shock absorber 8 makes a sound during the rotation process; if there is an abnormal sound, it is unqualified; if there is no abnormal sound, it is qualified.

[0053] In some optional embodiments, the cross bar 32 is sleeved with a through sleeve 41, and the through sleeve 41 is hinged with a shock absorber second fixing member 43 connected to the shock absorber 8, and after the driving rotating disk 1 rotates leftward or rightward around its axis by a certain angle and repeatedly rotates a preset number of times, it includes:

[0054] Move the wear kit 41 along the cross bar 32 toward the first direction by a preset distance, drive the rotating disk 1 to rotate to the left or right by a certain angle around its axis, and repeat the rotation for a preset number of times. Specifically, according to the hard point position of the upper and lower ends of the shock absorber 8 under the maximum counterweight of the test vehicle, after the shock absorber 8 is adjusted and installed on the detection device, the wear kit 41 moves 3mm to the left. In some other embodiments, it can also move a distance less than 3mm. Control the motor 21 to rotate left and right, drive the rotating disk 1 to rotate, and let the shock absorber 8 rotate 45° to the left relative to the origin and 45° to the right relative to the origin. Repeat the rotation for 10,000 times, and track 50 rotation conditions at 0 times, 50,000 times, and 10,000 times respectively to see if there is any abnormal sound.

[0055] Move the wear kit 41 along the cross bar 32 toward the second direction by a preset distance, drive the rotating disk 1 to rotate a certain angle to the left or right around its axis, and repeat the rotation for a preset number of times. Specifically, according to the hard point position of the upper and lower ends of the shock absorber 8 under the maximum counterweight of the test vehicle, after the shock absorber 8 is adjusted and installed on the detection device, the wear kit 41 moves 3mm to the right. Similarly, it can also move a distance less than 3mm. Control the motor 21 to rotate left and right, drive the rotating disk 1 to rotate, and let the shock absorber 8 rotate 45° to the left relative to the origin and 45° to the right relative to the origin. Repeat the rotation for 10,000 times, and track 50 rotation conditions at 0 times, 50,000 times, and 10,000 times respectively to see if there is any abnormal sound. Among them, the first direction is opposite to the second direction. According to different actual standing positions, the first direction and the second direction in the embodiment of the present application can be regarded as left and right directions, or as front and back directions, etc.

[0056] The embodiment of the present application can fully detect whether the shock absorber 8 has abnormal noise when turning during the bench stage of the shock absorber 8 development, saving the time of detecting the abnormal noise of the shock absorber 8 under the turning condition during the actual vehicle stage, shortening the development time. It avoids the process of returning to the bench to re-match and develop the shock absorber 8 when abnormal rotation noise of the shock absorber 8 is found during the actual vehicle stage.

[0057] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0058] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0059] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A device for detecting abnormal noise of a shock absorber, characterized in that: It includes: A rotating disk (1), wherein the rotating disk (1) is provided with a first fixing member (11) of a shock absorber; A driving mechanism, the driving mechanism being connected to the rotating disk (1), and the driving mechanism driving the rotating disk (1) to rotate around the axis of the rotating disk (1); A support frame (3), the support frame (3) comprising a vertical rod (31) and a cross rod (32) connected to the vertical rod (31), the cross rod (32) and the rotating disk (1) are arranged up and down, and a shock absorber mounting assembly (4) is installed on the cross rod (32).

2. The abnormal noise detection device for a shock absorber according to claim 1, characterized in that: The shock absorber mounting assembly (4) comprises: A through-set (41), the through-set (41) being sleeved on the cross bar (32), and the through-set (41) being connected to a cross bar fixing piece (42), and the through-set (41) being fixed to the cross bar (32) via the cross bar fixing piece (42); A second shock absorber fixing member (43), wherein the second shock absorber fixing member (43) is hinged to the wear sleeve (41) via a rotating shaft, and the axis of the rotating shaft is perpendicular to the axis of the rotating disk (1).

3. The abnormal noise detection device for a shock absorber according to claim 2, characterized in that: The through-set (41) is provided with a threaded hole, and the crossbar fixing member (42) is passed through the threaded hole and is threadedly connected to the through-set (41); One end of the crossbar fixing member (42) is in contact with the crossbar (32), and the other end is fixed with a fastening handle (44).

4. The abnormal noise detection device for a shock absorber according to claim 1, characterized in that: The abnormal sound detection device further comprises a vertical adjustment mechanism (5), wherein the vertical adjustment mechanism (5) is mounted on the vertical rod (31), and the vertical adjustment mechanism (5) is fixed to the cross rod (32), and drives the cross rod (32) to move axially along the vertical rod (31).

5. The abnormal noise detection device for a shock absorber according to claim 4, characterized in that: The vertical rod (31) has a cavity (311), the vertical rod (31) is provided with a sliding groove communicating with the cavity (311), the sliding groove extends along the axial direction of the vertical rod (31), and the cross rod (32) is passed through the sliding groove; The vertical adjustment mechanism (5) comprises an adjustment rack (51), the adjustment rack (51) is accommodated in the cavity (311), and the adjustment rack (51) is fixed to the crossbar (32); The vertical adjustment mechanism (5) further comprises an adjustment gear (52), the adjustment gear (52) being connected to the vertical rod (31) via a connecting rod (53), and the adjustment gear (52) being meshed with the adjustment rack (51), and the adjustment gear (52) driving the cross rod (32) to move along the sliding groove.

6. The abnormal noise detection device for a shock absorber according to claim 5, characterized in that: Through holes are provided on opposite sides of the vertical rod (31), and two ends of the connecting rod (53) respectively pass through the through holes on the opposite sides, and an operating panel (54) is fixed to one end of the connecting rod (53).

7. The abnormal noise detection device for a shock absorber according to claim 1, characterized in that: The abnormal sound detection device further comprises a fixing seat (6), the fixing seat (6) being connected to a bearing (7), and an end of the bearing (7) away from the fixing seat (6) being fixed to the rotating disk (1); The driving mechanism comprises a motor (21), the motor (21) and the fixing seat (6) are arranged at a distance, and a motor gear (22) is fixed to the motor (21), and the motor gear (22) and the rotating disk (1) are connected via a transmission chain (23).

8. The abnormal noise detection device for a shock absorber according to claim 1, characterized in that: The first fixing member (11) of the shock absorber is provided with a through groove (111), and the through groove (111) extends along the axial direction of the rotating disk (1).

9. A method for detecting an abnormal sound using the abnormal sound detection device according to any one of claims 1 to 8, characterized in that: It includes the following steps: Fixing the two ends of the shock absorber to the first shock absorber fixing member (11) and the shock absorber mounting assembly (4) respectively; The rotating disk (1) is driven to rotate clockwise and counterclockwise around its axis by a certain angle, and the rotation is repeated for a preset number of times; Whether the shock absorber is qualified is judged based on whether it makes noise during rotation. If there is abnormal noise, it is unqualified; if there is no abnormal noise, it is qualified.

10. The abnormal sound detection method according to claim 9, characterized in that: The cross bar (32) is sleeved with a through sleeve (41), and the through sleeve (41) is hingedly connected to a second shock absorber fixing member (43) connected to the shock absorber. After the driving rotating disk (1) rotates leftward or rightward around its axis by a certain angle and repeats the rotation for a preset number of times, the method comprises: The insertion sleeve (41) is moved along the cross bar (32) in a first direction by a preset distance, and the rotating disk (1) is driven to rotate leftward or rightward by a certain angle around its axis, and the rotation is repeated a preset number of times; The insertion sleeve (41) is moved along the cross bar (32) toward the second direction by a preset distance, and the rotating disk (1) is driven to rotate leftward or rightward by a certain angle around its axis, and the rotation is repeated for a preset number of times, wherein the first direction is opposite to the second direction.

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