A damper damping force testing device with an automatic clamping mechanism

Abstract

This invention relates to the field of testing devices and discloses a damper damping force testing device with an automatic clamping mechanism. The device includes a base and a feeding assembly mounted on the base. The feeding assembly includes a feed pipe, a nozzle, a venturi tube, and a feed box. A nozzle is located on one side of the feed pipe, and two venturi tubes are located on the other side. The other ends of the venturi tubes are connected to an external air pump and a water pump, respectively. A feed box is located below the venturi tubes. This invention provides a damper damping force testing device with an automatic clamping mechanism, which solves the problem of overly idealized operating conditions in existing testing devices by integrating an environmental simulation system. It can simulate high dust, rainfall, mud, and even combined extreme environments, and the temperature inside the testing chamber can be adjusted by an external temperature control component, thereby realistically reproducing the varied and harsh operating conditions faced by dampers in actual use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing devices, in particular to a shock absorber damping force testing device with an automatic clamping mechanism. BACKGROUND

[0002] As a core component of the vehicle suspension system, the performance of the shock absorber is directly related to the ride comfort, handling stability and safety of the vehicle. For new energy vehicles, due to the addition of battery packs and other weights, and the higher requirements for energy recovery efficiency, more stringent standards are put forward for the performance and reliability of the shock absorber. Therefore, it is crucial to conduct accurate and reliable performance testing before the shock absorber is shipped or during the research and development stage.

[0003] In the patent application with the publication number CN120293556A, it includes a shock absorber performance detection main body, which is connected with a lower clamping seat on the front side through bolts, and is characterized by a performance detection structure connected to the output end of the hydraulic push rod of the shock absorber performance detection main body through bolts. The performance detection structure includes a horizontal electric push rod, the output end of the horizontal electric push rod is fixed with a lifting liquid pipe, a lifting piston spring sleeve rod slides in the inside of the lifting liquid pipe, the lower end of the lifting piston spring sleeve rod is fixed with a lower liquid ring, a first variable diameter liquid pipe group is communicated and arranged on the left side of the lifting liquid pipe, one end of the first variable diameter liquid pipe group is communicated with a lower liquid guide pipe, an input liquid channel is arranged in the inside of the lower liquid ring, a piston spring push rod is slidably arranged in the through hole penetrating the center of the lower liquid ring, the through hole of the piston spring push rod is communicated with an output liquid channel arranged in the inside of an upper liquid ring through a communication pipe, the lower surface of the horizontal electric push rod is fixed with a horizontal liquid pipe, a top push piston spring sleeve rod is slidably arranged in the inside of the horizontal liquid pipe, a second variable diameter liquid pipe group is fixedly arranged below the horizontal liquid pipe and fixedly communicated with a horizontal liquid guide pipe through the second variable diameter liquid pipe group, the liquid outlet end of the horizontal liquid guide pipe is fixed with an outer sleeve ring, and is communicated with a notch sliding groove arranged in the inside of the outer sleeve ring, a spring piston is slidably arranged in the inside of the notch sliding groove, the piston upper side of the spring piston is fixed with a rotating ring through a support rod, the rotating ring is rotatably and sealingly arranged on the upper side of the outer sleeve ring, and a detection camera is fixedly arranged on the surface of the rotating ring. The advantages are: through the cooperative working mechanism of the shock absorber performance detection main body, the performance detection structure and the lower clamping seat, the new energy vehicle shock absorber can be quickly and accurately detected in multiple dimensions, the lower clamping seat can stably fix the lower end of the shock absorber, the performance detection structure can flexibly adjust the position and apply force from different directions, avoiding the tedious operation of adjusting the equipment and installation method multiple times in traditional detection, greatly shortening the detection time and improving the detection efficiency.

[0004] In the prior art including the above-mentioned patent, generally focus on the basic mechanical properties of the shock absorber in the normal temperature, clean environment test, the device through the hydraulic or mechanical actuator simulation vehicle driving in one-way or two-way force, and can be integrated visual monitoring system, to improve the overall detection, however, in the practice process found that, the prior art still has the following limitations:

[0005] The working condition is too idealized and cannot simulate the real environment interference: the existing device works in the standard laboratory environment, cannot reproduce the complex environmental factors such as extreme temperature, humidity, mud, sewage and so on that the shock absorber faces in actual use, for example, in cold winter, the increase of oil viscosity of shock absorber will lead to change of damping characteristics; in muddy road, the attachment of pollutants will affect the service life of sealing and change the friction coefficient, the existing detection device ignores these key environmental variables, leading to deviation between test data and performance in real working condition, and cannot effectively predict the actual durability and reliability of the product;

[0006] The detection dimension is single and lacks comprehensive examination: the existing technology mainly focuses on the pure mechanical damping performance of the shock absorber, its detection function is single, a qualified shock absorber not only needs to provide sufficient damping force in ideal state, but also needs to have the ability to keep performance stable, anti-pollution and aging resistance in complex and changeable environment, the current device lacks the comprehensive test ability of combining mechanical performance test with environmental adaptability test;

[0007] The clamping efficiency and the automation degree of the test process need to be improved: although some devices realize automatic clamping, the clamping mechanism and the test environment isolation function are independent of each other, the whole test process cannot realize integrated automatic closed loop, which affects the detection efficiency, and may introduce uncertain factors due to manual operation. SUMMARY

[0008] The problem to be solved by the present application is that the detection method of the shock absorber has the problem of working condition distortion. The specific performance is that: the environment is idealized; the test process is single and fixed; the efficiency and authenticity are difficult to balance.

[0009] To solve the above technical problems, the technical scheme of the present application is: a shock absorber damping force test device with automatic clamping mechanism, comprising a base, and a feeding assembly installed on the base, the feeding assembly comprises a pipe, a nozzle, a venturi tube and a hopper, one side of the pipe is provided with a nozzle, one side of the pipe is provided with a venturi tube, the venturi tube is provided with two, the other end of the venturi tube is connected with an external air pump and a water pump respectively, the lower side of the venturi tube is provided with a hopper, the hopper is provided with two, the hopper and the venturi tube are connected through a pipeline;

[0010] The middle of the front end of the base is fixedly provided with a clamping assembly, the inside of the clamping assembly is provided with a workpiece body, the workpiece body is located on one side of the feeding assembly, and the inside of the clamping assembly is provided with a workpiece body;

[0011] The clamping assembly comprises a shell provided at the front end of the base, a mounting block is fixedly arranged at the inside lower end of the shell, the mounting block is L-shaped, an elastic plate is fixedly arranged at the middle upper end of the mounting block, eight elastic plates are uniformly distributed around the center of the upper end of the mounting block, a mounting pipe is arranged in the inside of the mounting block, the mounting pipe is fixedly connected with the mounting block, a fixed block is slidably arranged on one side of the elastic plate, the lower end of the fixed block is slidably connected with the shell, and a hatch is fixedly arranged on one side of the fixed block.

[0012] The upper and lower ends of the workpiece body are connected with the mounting block through the elastic plates, and a discharge port is arranged between the workpiece bodies at the lower end of the shell of the clamping assembly.

[0013] Preferably, two material pipes are arranged, each of the material pipes is connected with a Venturi tube, the two material pipes are respectively used for supplying gas and liquid, and the material pipe is in the shape of a Chinese character.

[0014] Preferably, an electromagnetic valve is arranged at the total head of the pipeline connected with the material box, and a mixture of sand and dust is arranged in the material box.

[0015] Preferably, a spring one is slidably arranged in the inside middle of the mounting pipe, a bolt is engagedly arranged on the side close to the mounting block of the spring one, a top block is arranged on the other side of the spring one, the top block is in the shape of an umbrella, the umbrella handle part of the top block is slidably connected with the mounting pipe, and the umbrella head part of the top block is slidably connected with the elastic plate.

[0016] Preferably, two hatches are symmetrically arranged along the center line of the shell, four mounting blocks are symmetrically arranged along the center line of the shell, only two fixed blocks are arranged, and the fixed blocks are arranged at the lower ends of the hatches.

[0017] Preferably, a sliding block is slidably arranged at each corner of the shell, a spring two is arranged on the outside of the sliding block, the other end of the spring two is connected with the shell, a fixing screw is arranged in the inside of the spring two, and the sliding block and the spring two are limited in the active position through the fixing screw.

[0018] Preferably, the sliding block is slidably connected with the hatch, a connecting rod is arranged on one side of the hatch, a sliding rail is arranged on the side close to the connecting rod of the hatch, the hatch is slidably connected with the sliding rail through the connecting rod, the connecting rod in the sliding rail can move forward and backward within a certain range, and the sliding rail is fixedly connected with the shell.

[0019] Compared with the prior art, the technical scheme of the present application has the following advantages:

[0020] (1) The present application solves the problem of idealized working condition of the existing test device by integrating an environmental simulation system. Specifically, the built-in feeding assembly of the device can simulate high dust, rain, mud and even composite extreme environments, and the temperature in the test chamber can be adjusted through the external temperature control assembly, so that the variable and harsh working conditions faced by the shock absorber in actual use can be truly reproduced. This makes the test data more accurately reflect the durability and reliability of the product in complex environments, greatly improving the authenticity of the test results and the comprehensiveness of the evaluation.

[0021] (2) The present application integrates the automatic clamping mechanism with the test environment chamber, realizing efficient and automatic closed loop of clamping, sealing and testing process. The final locking of the workpiece is completed by the fixed block driven synchronously by the hatch closing action, which significantly improves the clamping efficiency and consistency. At the same time, the device is provided with a discharge port at the bottom, and supports the functions of water flushing and compressed air drying, which can quickly clean the test residual pollutants, effectively solving the problem of difficult maintenance of pollution environment simulation equipment, and greatly improving the detection efficiency and the ease of use of the equipment as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall three-dimensional (rear view) structure of the present application;

[0023] Figure 2 is a schematic diagram of the overall three-dimensional structure of the present application;

[0024] Figure 3 is a schematic diagram of the partial cross-sectional structure of the shell of the present application;

[0025] Figure 4 is a schematic diagram of the overall three-dimensional structure of the present application Figure 3 is an enlarged schematic diagram of position A in the present application;

[0026] Figure 5 is a schematic diagram of the clamping mechanism of the present application;

[0027] Figure 6 is a schematic diagram of the internal structure of the shell of the present application (rear view);

[0028] Figure 7 is an enlarged schematic diagram of the internal structure of the shell of the present application;

[0029] Figure 8 is a schematic diagram of the internal structure of the shell of the present application (front view).

[0030] In the diagram: 1. Base; 2. Clamping assembly; 201. Outer shell; 202. Mounting block; 203. Elastic plate; 204. Mounting tube; 205. Spring 1; 206. Bolt; 207. Top block; 208. Fixing block; 209. Door; 210. Slider; 211. Spring 2; 212. Slide rail; 3. Workpiece body; 4. Feeding assembly; 401. Material tube; 402. Nozzle; 403. Venturi tube; 404. Material box; 405. Discharge port. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0032] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0033] like Figures 1 to 8 As shown, the present invention provides a damper damping force testing device with an automatic clamping mechanism, including a base 1 and a feeding assembly 4 mounted on the base 1. The feeding assembly 4 includes a feed pipe 401, a nozzle 402, a venturi tube 403, and a feed box 404. A nozzle 402 is provided on one side of the feed pipe 401, and a venturi tube 403 is provided on one side of the feed pipe 401. There are two venturi tubes 403. The other end of the venturi tube 403 is connected to an external air pump and a water pump, respectively. A feed box 404 is provided below the venturi tube 403. There are two feed boxes 404. The feed boxes 404 and the venturi tubes 403 are connected by a pipe.

[0034] A clamping assembly 2 is fixedly installed at the front center of the base 1. The workpiece body 3 is installed inside the clamping assembly 2. The workpiece body 3 is located on one side of the feeding assembly 4. The workpiece body 3 is installed inside the clamping assembly 2.

[0035] The clamping assembly 2 comprises a shell 201 arranged at the front end of the base 1, and the inner lower end of the shell 201 is fixedly provided with a mounting block 202, the mounting block 202 is L-shaped, the upper end of the mounting block 202 is fixedly provided with an elastic plate 203, the elastic plate 203 is evenly distributed around the center of the upper end of the mounting block 202, and there are eight elastic plates 203 in total, the inside of the mounting block 202 is provided with a mounting pipe 204, the mounting pipe 204 is fixedly connected with the mounting block 202, one side of the elastic plate 203 is slidably provided with a fixed block 208, the lower end of the fixed block 208 is slidably connected with the shell 201, and one side of the fixed block 208 is fixedly provided with a hatch 209.

[0036] The upper and lower ends of the workpiece body 3 are connected with the mounting block 202 through the elastic plate 203, and the lower end of the shell 201 in the clamping assembly 2 is provided with a discharge port 405 between the workpiece bodies 3.

[0037] The material pipe 401 is provided with two, each of the material pipes 401 is connected with a Venturi tube 403, and the two material pipes 401 are respectively used for supplying gas and liquid, and the material pipe 401 is provided in the shape of 0.

[0038] The pipeline connected with the material box 404 is provided with an electromagnetic valve at the total head, and the material box 404 is provided with a mixture of sand and dust.

[0039] The inside of the mounting pipe 204 is slidably provided with a spring 205, the side close to the mounting block 202 of the spring 205 is engagedly provided with a bolt 206, the other side of the spring 205 is provided with a top block 207, the top block 207 is provided in the shape of an umbrella, the umbrella handle part of the top block 207 is slidably connected with the mounting pipe 204, and the umbrella head part of the top block 207 is slidably connected with the elastic plate 203.

[0040] The hatch 209 is symmetrically provided with two along the center line of the shell 201, the mounting block 202 is symmetrically provided with four along the center line of the shell 201, and the fixed block 208 is provided with only two, and the fixed blocks 208 are arranged at the lower ends of the hatches 209.

[0041] The corners of the shell 201 are slidably provided with sliding blocks 210, the outer side of the sliding block 210 is provided with a spring 211, the other end of the spring 211 is connected with the shell 201, the inside of the spring 211 is provided with a fixing screw, and the sliding block 210 and the spring 211 are limited in the movable position through the fixing screw.

[0042] The sliding block 210 is slidably connected with the hatch 209, one side of the hatch 209 is provided with a connecting rod, one side close to the connecting rod of the hatch 209 is provided with a sliding rail 212, the hatch 209 is slidably connected with the sliding rail 212 through the connecting rod, the connecting rod in the sliding rail 212 can move back and forth within a certain range, and the sliding rail 212 is fixedly connected with the shell 201.

[0043] The working principle and use process of the present application: when detecting the workpiece body 3:

[0044] Workpiece clamping:

[0045] The worker installs the upper and lower end mounting holes of the workpiece body 3 to the elastic plate 203, and under the action of external force, the inner top block 207 of the elastic plate 203 shrinks inward, and the outermost end diameter of the elastic plate 203 adjusts accordingly; after the workpiece is installed in place, the hatch 209 is closed.

[0046] Workpiece fixing:

[0047] When the hatch 209 is closed, the fixing block 208 moves synchronously to one side of the elastic plate 203; during the inward movement of the hatch 209, the fixing block 208 is pushed in, so that it blocks one end of the elastic plate 203, and the workpiece body 3 is fixed in the device.

[0048] Environmental simulation detection and subsequent processing

[0049] Environmental simulation control: after starting the detection, the gas pump, water pump and corresponding electromagnetic valve are controlled to selectively simulate the following four environments:

[0050] Temperature simulation: turn on the gas pump, and the nozzle 402 blows gas into the shell 201, and the gas temperature is adjusted by the external temperature control assembly;

[0051] High-dust environment simulation: turn on the gas pump and the corresponding electromagnetic valve, and the gas mixes with the sand dust in the material box 404 through the Venturi tube 403, and is sent into the shell 201 by the nozzle 402;

[0052] Rainfall environment simulation: turn on the water pump, and the other group of nozzles 402 deliver liquid into the shell 201;

[0053] Extreme environment simulation: turn on the water pump and the corresponding electromagnetic valve, and the liquid mixes with the sand dust in the material box 404 through the Venturi tube 403 to form a mortar, which is sprayed to the workpiece body 3 by the nozzle 402;

[0054] The four environments can be randomly switched by controlling the gas pump, water pump and electromagnetic valve during detection.

[0055] Subsequent processing: after the environmental simulation is completed, the equipment and the gas pump are turned off; two kinds of subsequent operations can be selected:

[0056] Keep the water pump on and continuously flush the inside of the device with clean water, and the sewage is discharged through the discharge port 405;

[0057] According to the experimental requirements, keep the gas pump on and perform air drying treatment on the workpiece body (3).

[0058] The above examples are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements are also considered to fall within the protection scope of the present application.

Claims

1. A shock absorber damping force testing device with automatic clamping mechanism, comprising a base (1), and a feeding assembly (4) mounted on the base (1), characterized in that: The feeding assembly (4) comprises a material pipe (401), a nozzle (402), a Venturi tube (403) and a material box (404), one side of the material pipe (401) is provided with the nozzle (402), one side of the material pipe (401) is provided with the Venturi tube (403), the Venturi tube (403) is provided with two, the other end of the Venturi tube (403) is connected with an external air pump and a water pump respectively, the lower side of the Venturi tube (403) is provided with the material box (404), the material box (404) is provided with two, and the material box (404) and the Venturi tube (403) are connected through a pipeline; The front end of the base (1) is fixedly provided with a clamping assembly (2), and the inside of the clamping assembly (2) is provided with a workpiece body (3); the workpiece body (3) is located on one side of the feeding assembly (4); and the inside of the clamping assembly (2) is provided with the workpiece body (3). The clamping assembly (2) comprises an outer shell (201) arranged at the front end of the base (1), a mounting block (202) fixedly arranged at the inside lower end of the outer shell (201), the mounting block (202) being L-shaped, an elastic plate (203) fixedly arranged at the upper end middle part of the mounting block (202), eight elastic plates (203) evenly distributed around the center of the mounting block (202), a mounting pipe (204) arranged in the mounting block (202), the mounting pipe (204) being fixedly connected with the mounting block (202), a fixed block (208) slidably arranged on one side of the elastic plate (203), the lower end of the fixed block (208) being slidably connected with the outer shell (201), and a hatch (209) fixedly arranged on one side of the fixed block (208). The upper and lower ends of the workpiece body (3) are connected with the mounting block (202) through the elastic plate (203), and a discharge port (405) is arranged between the workpiece body (3) at the lower end of the outer shell (201) of the clamping assembly (2).

2. The shock absorber damping force testing device having an automatic clamping mechanism according to claim 1, characterized by: The two material pipes (401) are connected with the Venturi tube (403), and the two material pipes (401) are respectively used for supplying air and liquid; and the material pipe (401) is arranged in the shape of 0.

3. The shock absorber damping force testing device having an automatic clamping mechanism according to claim 1, characterized by: The pipeline connected with the Venturi tube (403) and the material box (404) is provided with an electromagnetic valve, and the material box (404) is provided with a mixture of sand and dust.

4. The shock absorber damping force testing device having an automatic clamping mechanism according to claim 1, characterized by: The inside of the mounting pipe (204) is slidably provided with a spring (205), the side of the spring (205) close to the mounting block (202) is engaged with a bolt (206), the other side of the spring (205) is provided with a top block (207), the top block (207) is arranged in the shape of an umbrella, the umbrella handle part of the top block (207) is slidably connected with the mounting pipe (204), and the umbrella head part of the top block (207) is slidably connected with the elastic plate (203).

5. The shock absorber damping force testing device having an automatic clamping mechanism according to claim 1, characterized by: The cabin door (209) is symmetrically provided with two along the center line of the shell (201), the mounting block (202) is symmetrically provided with four along the center line of the shell (201), the fixing block (208) is provided with only two, and the fixing block (208) is arranged at the lower end of the cabin door (209).

6. The shock absorber damping force testing device having an automatic clamping mechanism according to claim 1, characterized by: The corner of the shell (201) is slidably provided with a sliding block (210), the outer side of the sliding block (210) is provided with a spring (211), the other end of the spring (211) is connected with the shell (201), the inside of the spring (211) is provided with a fixing screw, and the sliding block (210) and the spring (211) are limited in the movable position by the fixing screw.

7. The shock absorber damping force testing device having an automatic clamping mechanism according to claim 6, characterized by: The sliding block (210) is slidably connected with the cabin door (209), one side of the cabin door (209) is provided with a connecting rod, the side, close to the connecting rod, of the cabin door (209) is provided with a sliding rail (212), the cabin door (209) is slidably connected with the sliding rail (212) through the connecting rod, the connecting rod in the sliding rail (212) can move forward and backward within a certain range, and the sliding rail (212) is fixedly connected with the shell (201).

Images