CN-224231282-U - Abnormal sound testing tool for shock absorber

CN224231282UCN 224231282 UCN224231282 UCN 224231282UCN-224231282-U

Abstract

The utility model relates to an abnormal sound testing tool for a shock absorber, which comprises a detection frame, a screw rod and a hydraulic jack, wherein the screw rod and the hydraulic jack are arranged up and down. The screw rod is used for adjusting the height of the upper clamp through the lifting driving mechanism, and the hydraulic jack is used for driving the lower clamp to lift, so that the shock absorber can be aligned and clamped rapidly. A guide frame and a V-shaped bearing are arranged between the upper clamp and the screw rod, the guide frame is matched with the sliding rail through a sliding block, the motion track is restrained, the lateral force is absorbed, and the coaxiality is ensured. The upper fixture comprises a rigid frame composed of upper and lower mounting plates and supporting rods for dispersing clamping stress, and the lower fixture comprises left and right clamping blocks, slots of which form clamping holes for limiting transverse displacement and increasing contact area. A detachable bottom plate is arranged below the right clamping block, and clamping force is adjusted through the counter bore and the inner tapping hole. The compression-sheet type load sensor monitors axial load in real time, and the guide frame adopts a truss structure to improve rigidity. The tool is suitable for shock absorbers of different models, improves clamping efficiency and testing precision, and reduces maintenance cost.

Inventors

LU TONGQIANG
CHEN CHAO
LI SHAOQING

Assignees

浙江亚之星汽车部件有限公司

Dates

Publication Date: 20260512
Application Date: 20250519

Claims (7)

1. The abnormal sound testing tool for the shock absorber comprises a detection frame and is characterized by further comprising a screw rod and a hydraulic jack which are arranged up and down relatively, wherein the screw rod is linked with a lifting driving mechanism for driving the screw rod to vertically reciprocate, the lower end of the screw rod is linked with an upper clamp for clamping the upper end of the shock absorber, and the output end of the hydraulic jack is linked with a lower clamp for clamping the lower end of the shock absorber.
2. The abnormal sound testing tool for the shock absorber according to claim 1, wherein a guide frame is arranged between the upper clamp and the screw rod, a sliding block is linked on the side edge of the guide frame, a sliding rail fixed on the detection frame is in sliding fit with the sliding block, the upper end of the guide frame is linked with the screw rod, a V-shaped bearing is linked on the lower end of the guide frame, and the inner ring of the V-shaped bearing is linked with the upper clamp.
3. The abnormal sound testing tool for the shock absorber of claim 2, wherein the upper fixture comprises an upper mounting plate and a lower mounting plate which are mutually parallel and are arranged at intervals, the upper mounting plate is connected with the lower mounting plate through a plurality of groups of supporting rods, the upper mounting plate is connected with a linkage column inserted into an inner ring of a V-shaped bearing, and a first connecting hole is formed in the middle of the lower mounting plate.
4. The abnormal sound testing tool for the shock absorber according to claim 1, wherein the lower clamp comprises left clamping blocks and right clamping blocks which are oppositely arranged left and right, a first slot is formed in one side, facing the right clamping blocks, of the left clamping blocks, a second slot corresponding to the first slot is formed in the right clamping blocks, and clamping holes matched with the lower portions of the shock absorbers are formed in the first slot and the second slot together.
5. The abnormal sound testing tool for the shock absorber of claim 4, wherein a bottom plate extending towards the outside is arranged below the right clamping block, the left clamping block is distributed on the bottom plate, a main mounting hole is formed in the middle of the bottom plate, a plurality of groups of inner tapping holes are symmetrically formed in two sides of the left clamping block, a group of countersunk holes are respectively formed in the right clamping block corresponding to each group of inner tapping holes, and the countersunk holes are detachably connected with the inner tapping holes through fasteners.
6. The abnormal sound testing tool for the shock absorber according to any one of claims 1 to 5, wherein a tabletting type load sensor is arranged between the lower clamp and the hydraulic jack, and a second connecting hole is formed above the tabletting type load sensor.
7. The abnormal sound testing tool for the shock absorber of claim 2, wherein the guide frame comprises two groups of vertical supporting plates which are arranged front and back, transverse supporting plates which are arranged up and down are arranged between the two groups of vertical supporting plates, and two ends of each group of transverse supporting plates are detachably connected with two ends of each vertical supporting plate respectively.

Description

Abnormal sound testing tool for shock absorber Technical Field The utility model particularly relates to an abnormal sound testing tool for a shock absorber. Background The shock absorber is a core component of a vehicle suspension system and is responsible for absorbing road impact and stabilizing the posture of a vehicle body. If abnormal sound occurs to the shock absorber, the abnormal sound is not detected and repaired in time, so that the function failure of the shock absorber can be caused, and the safety of a vehicle is influenced. The invention discloses a detection machine for detecting the function of a shock absorber, which comprises a detection frame, wherein guide rods are respectively arranged at two ends of the detection frame, the lower end of a first fixing plate is hinged with a swinging rod through a connecting rod and a pin shaft, one end of the swinging rod is hinged with a driving motor through an eccentric shaft, a slide rail is arranged at the upper end of the first fixing plate, a tight inserting block is movably arranged on the slide rail, one end of the tight inserting block is connected with a driving cylinder, a lifting block matched with a contact surface on the tight inserting block is arranged on the lower end surface of a second fixing plate, the lifting block is propped against the tight inserting block, a shock absorber placing seat is arranged on the upper end surface of the second fixing plate, a third fixing plate is connected with a clamping component through a screw rod component, and a middle clamping component of the shock absorber is further arranged between the third fixing plate and the second fixing plate. Firstly, the clamping component in the shock absorber detection machine depends on the mechanical linkage of the inverted V-shaped pushing sliding block and the clamping rod, and the clamping position of the shock absorber needs to be manually adjusted for many times, so that the placing direction of the shock absorber can be along the given direction, and the operation is complex. Secondly, the guide rod and the slide rail are single-shaft rigid supports, and radial deflection and torsion freedom degrees in shock absorber testing cannot be restrained. In the testing process, a certain force or moment is necessarily applied to the shock absorber, a lateral force or moment is necessarily generated, the lateral force or moment is directly transmitted to the frame through the mechanical structure, parasitic vibration (such as collision noise between the plugging block and the lifting block) is formed, a real signal is interfered, and measurement data deviation is caused. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the shock absorber abnormal sound testing tool, which realizes automatic alignment and locking of the upper clamp and the lower clamp of the shock absorber, greatly shortens the clamping time compared with the traditional manual adjustment time, and realizes quick assembly and disassembly of the shock absorber on the testing tool, and is convenient to operate. The technical scheme is that the abnormal sound testing tool for the shock absorber comprises a detection frame and is characterized by further comprising a screw rod and a hydraulic jack which are arranged up and down in a relative mode, wherein the screw rod is linked with a lifting driving mechanism for driving the screw rod to vertically reciprocate, the lower end of the screw rod is linked with an upper clamp for clamping the upper end of the shock absorber, and the output end of the hydraulic jack is linked with a lower clamp for clamping the lower end of the shock absorber. By adopting the technical scheme, the lifting driving mechanism drives the screw rod to lift, so that the position of the upper clamp is adjusted, the hydraulic jack adjusts the position of the lower clamp, the shock absorber is placed between the upper clamp and the lower clamp, automatic alignment and locking of the upper clamp and the lower clamp of the shock absorber can be realized, the clamping time is greatly shortened compared with the traditional manual adjustment time, the quick assembly and disassembly of the shock absorber on the test tool is realized, and the operation is convenient. Furthermore, the test fixture can be adapted to shock absorbers with different sizes, and the lifting position of the screw rod is changed. It should be noted that, the "screw and lifting driving mechanism" may be obtained by purchasing a "screw lifter", which is the prior art, so the specific structure of the lifting driving mechanism is not specifically developed in the present application. The shock absorber abnormal sound testing tool can be further characterized in that a guide frame is arranged between the upper clamp and the screw rod, a sliding block is linked to the side edge of the guide frame, a sliding rail fixed on the detection frame is in sliding fit with the slid