Damping force testing device for shock absorber

Abstract

The utility model discloses a shock absorber damping force testing device, which relates to the technical field of testing devices and comprises a testing table, ear grooves are arranged at two ends of the testing table, and a plurality of first double holes are arranged at the tops of the ear grooves of the testing table. The output end of the hydraulic cylinder and a screw rod of a connecting plate connected with the pressing column base penetrate through the adjusting groove and then are in threaded connection with a nut, so that the hydraulic cylinder and the pressing column base can be connected with the pressing plates together, the two pressing plates on the two sides can be spliced together in the mode that double rods penetrate through the third double holes, and descending of the hydraulic cylinder after working can drive the pressing column base to descend together. The pressing column base is in contact connection with the foot placing positions of the main driving position, the co-driving position and the rear-row driving position and presses the vehicle downwards, so that the shock absorber is compressed and contracted, then the hydraulic cylinder rapidly and reversely stretches out to enable the pressing column base to be far away from the foot placing positions, and the vehicle observes the damping force of the vehicle through springback of the shock absorber. The method is a dynamic test mode after the shock absorber is used for a period of time.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a shock absorber damping force testing device. Background Art

[0002] The damping force test of automobile shock absorbers is mainly used to evaluate the performance and function of shock absorbers. Damping force is the resistance generated by the shock absorber when it is compressed or stretched. This resistance helps to reduce the vibration amplitude and energy between the wheel and the body, and improve the smoothness and comfort of the car's driving. Through the damping force test, various factors that affect the damping force of the shock absorber can be analyzed, such as the friction between the valve wall and the hydraulic oil inside the shock absorber, the internal friction between the hydraulic oil molecules, etc. The test results can be used to evaluate whether the performance of the shock absorber is good, whether it works reliably, and whether it needs to be adjusted or replaced.

[0003] In the process of implementing the solution, the inventors found that the following problems in the prior art have not been well solved: Generally, most shock absorbers are tested before leaving the factory, that is, static testing, while post-use testing requires them to be removed from the vehicle suspension for testing, and the disassembly operation is complicated, and it is impossible to simply and directly observe whether the damping force of the shock absorber affects the normal use of the vehicle. Utility Model Content

[0004] The main purpose of the utility model is to provide a shock absorber damping force testing device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The shock absorber damping force testing device comprises a test bench, both ends of the test bench are chiseled with ear grooves, the top of the test bench located at the ear groove position is chiseled with a plurality of double holes one, the inner side wall and the inner bottom of the ear groove are chiseled with slide grooves, both ends of the inner part of the ear groove are provided with fixed seats, the top of the fixed seat is fixed with a movable seat, the movable seat is rotatably connected with a movable plate, the movable plate is chiseled with double hole two at the position of the double hole one, a U-shaped rod is inserted into the double hole two, the outer wall of the fixed seat located at the slide groove position is fixed with a slider, the A hydraulic cylinder is installed on the top of the fixed seat, and a pressure plate is provided on the test bench above the fixed seat. Adjustment grooves are drilled at the ends of two adjacent pressure plates away from each other, and screws are inserted through the inside of the adjusting grooves. Nuts are threadedly connected to the outer walls of the screws, and connecting plates are fixed to the bottoms of the screws. A pressure column seat is provided at the end of the bottom of the pressure plate away from the hydraulic cylinder, double holes three are drilled at one end of the two pressure plates on one side close to the two pressure plates on the other side, and double rods are fixed to one side of the double hole three of the two pressure plates on the other side.

[0007] Preferably, the sliding blocks are respectively inserted into sliding grooves of matching positions and are slidably connected thereto.

[0008] Preferably, the U-shaped rod is respectively connected to the double hole two, and one end of the U-shaped rod passing through the double hole two is respectively inserted into the double hole one of matching position, and the outer diameter dimensions of the two ends of the U-shaped rod respectively match the inner diameter dimensions of the double hole two and the double hole one.

[0009] Preferably, the double rods are respectively inserted into the matching double holes three, and the outer diameters of the double rods are respectively matched with the inner diameters of the double holes three.

[0010] Preferably, the pressure column seat is fixedly connected to the bottom of the connecting plate away from one end of the hydraulic cylinder.

[0011] Preferably, the top of the hydraulic cylinder is fixedly connected to the bottom of the connecting plate away from one end of the pressure column seat.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The output end of the hydraulic cylinder and the screw of the connecting plate connected to the pressure column seat pass through the adjusting groove and are threadedly connected with the nut, so that the hydraulic cylinder and the pressure column seat can be connected with the pressure plate, and the two pressure plates on both sides can be spliced ​​together by double rods passing through double holes. The descent of the hydraulic cylinder after work can drive the pressure column seat to descend together. The pressure column seat touches the footrest position of the main and co-pilot seats and the rear driver's seat and presses down the vehicle, so that the shock absorber is compressed and contracted. Then the hydraulic cylinder quickly extends in the opposite direction to make the pressure column seat away from the footrest position. The vehicle observes the size of its damping force through the rebound of the shock absorber. This is a dynamic test method for the shock absorber after a period of use. If the shock absorber drives the vehicle to rebound and contract too many times, it means that the damping force of the shock absorber has dropped significantly and needs to be replaced. This test method does not require the removal of the shock absorber. It is simple and convenient to operate and improves the detection efficiency.

[0014] 2. The fixed seat can change the position of the pressure column seat by sliding the slider in the slide groove, so that the pressure column seat can be adjusted and placed according to the different spacing between the front and rear rows of the vehicle to facilitate the test. After the movable plate is flipped over by the movable seat, the double hole two is made perpendicular to the double hole one that matches the position. Then the U-shaped rod passes through the double hole two and is inserted into the double hole one to limit the fixed seat, thereby achieving the effect of limiting after adjusting the position.

[0015] 3. Due to the different widths of the front and rear rows of different vehicles, there will be obstructions such as bulges in some places. The screw at the pressure column seat can change its position of pressing down the vehicle by sliding in the adjustment groove, so that the pressure column seat can adapt to vehicles of different sizes for adjustment before pressing down, increasing the wide range of test use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the damping force testing device of the shock absorber of the utility model;

[0017] Figure 2 It is a schematic diagram of the separation structure of the U-shaped rod and the double hole 2 and the double hole 1 of the shock absorber damping force test device of the utility model;

[0018] Figure 3 It is a schematic diagram of the separation structure of the screw rod, nut and pressure plate of the shock absorber damping force testing device of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the separation structure of double rods and double holes between two adjacent pressure plates of the shock absorber damping force testing device.

[0020] In the figure: 1. test bench; 11. ear groove; 12. double hole one; 13. slide groove; 2. fixed seat; 21. hydraulic cylinder; 22. slide block; 23. movable seat; 24. movable plate; 25. double hole two; 26. U-shaped rod; 3. pressure plate; 31. adjustment groove; 32. double rod; 33. double hole three; 4. connecting plate; 41. screw rod; 42. nut; 5. pressure column seat. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, the shock absorber damping force test device includes a test bench 1, both ends of the test bench 1 are drilled with ear grooves 11, the top of the test bench 1 located at the position of the ear groove 11 is drilled with a plurality of double holes 12, the inner side wall and the inner bottom of the ear groove 11 are drilled with slide grooves 13, both ends of the inner side of the ear groove 11 are provided with fixed seats 2, the top of the fixed seat 2 is fixed with a movable seat 23, the movable seat 23 is rotatably connected with a movable plate 24, the movable plate 24 is drilled with double holes 25 at the position of the double holes 12, the double holes 25 are inserted with U-shaped rods 26, and the outer wall of the fixed seat 2 located at the position of the slide groove 13 is fixed with a slider 2 2, a hydraulic cylinder 21 is installed on the top of the fixed seat 2, a pressure plate 3 is arranged above the position of the fixed seat 2, an adjusting groove 31 is drilled at one end of two adjacent pressure plates 3 away from each other, a screw 41 is inserted through the inside of the adjusting groove 31, a nut 42 is threadedly connected to the outer wall of the screw 41, a connecting plate 4 is fixed to the bottom of the screw 41, a pressure column seat 5 is arranged at one end of the bottom of the pressure plate 3 away from the hydraulic cylinder 21, a double hole three 33 is drilled at one end of the two pressure plates 3 on one side close to the two pressure plates 3 on the other side, and a double rod 32 is fixed to one side of the two pressure plates 3 on the other side.

[0023] Specifically, the sliders 22 are respectively inserted into the slide grooves 13 of matching positions and slidably connected thereto, so that the hydraulic cylinder 21 can be adjusted according to the distance between the front and rear rows of the vehicle.

[0024] Specifically, the U-shaped rod 26 is respectively connected with the double hole 25, and one end of the U-shaped rod 26 passes through the double hole 25 and is respectively inserted into the double hole 12 of matching position, and the outer diameter dimensions of the two ends of the U-shaped rod 26 are respectively matched with the inner diameter dimensions of the double hole 25 and the double hole 12, so as to limit the fixed seat 2 whose position is adjusted.

[0025] Specifically, the double rods 32 are respectively inserted into the matching double holes 33, and the outer diameters of the double rods 32 are respectively matched with the inner diameters of the double holes 33, so that the pressure plates 3 are convenient to assemble and convenient to store after disassembly.

[0026] Specifically, the pressure column seat 5 is fixedly connected to the bottom of the connecting plate 4 away from one end of the hydraulic cylinder 21, and the top of the hydraulic cylinder 21 is respectively fixedly connected to the bottom of the connecting plate 4 away from one end of the pressure column seat 5, so that the output end of the hydraulic cylinder 21 and the pressure column seat 5 can be conveniently detachably connected to the pressure plate 3 with the help of the connecting plate 4, the screw 41 and the nut 42.

[0027] Working principle: the output end of the hydraulic cylinder 21 and the screw rod 41 of the connecting plate 4 connected to the pressure column seat 5 pass through the adjusting groove 31 and are threadedly connected with the nut 42, so that the hydraulic cylinder 21 and the pressure column seat 5 can be connected with the pressure plate 3, and the two pressure plates 3 on both sides can be spliced ​​together through the double rods 32 passing through the double holes 33. The descent of the hydraulic cylinder 21 after work can drive the pressure column seat 5 to descend together. The pressure column seat 5 touches the footrest position of the main and co-pilot seats and the rear driver's seat and presses down the vehicle, so that the shock absorber is compressed and contracted. Then the hydraulic cylinder 21 quickly extends in the opposite direction, so that the pressure column seat 5 can be away from the footrest position. The vehicle observes the size of its damping force through the rebound of the shock absorber. This is a dynamic test method for the shock absorber after a period of use. If the shock absorber drives the vehicle to rebound and contract too many times, it means that the damping force of the shock absorber has dropped significantly and needs to be replaced. This test method does not require disassembly of the shock absorber, is simple and convenient to operate, and improves the detection efficiency. The fixed seat 2 can change the position of the pressure column seat 5 by sliding the slider 22 in the slide groove 13, so that the pressure column seat 5 can be adjusted and placed according to the different spacings between the front and rear rows of the vehicle to facilitate the test. After the movable plate 24 is flipped over by the movable seat 23, the double hole 25 is perpendicular to the double hole 12 of the matching position. Then the U-shaped rod 26 penetrates the double hole 25 and is inserted into the double hole 12 to limit the fixed seat 2, so as to achieve the effect of limiting after the adjustment position. Due to the different widths of the front and rear rows of different vehicles, there will be obstructions such as protrusions in some places. The screw 41 at the position of the pressure column seat 5 can change its position of pressing down the vehicle by sliding in the adjustment groove 31, so that the pressure column seat 5 can adapt to vehicles of different sizes for adjustment before pressing down, thereby increasing the wide range of test use.

[0028] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A shock absorber damping force testing device, comprising a test bench (1), characterized in that: Both ends of the test bench (1) are provided with ear grooves (11), the top of the test bench (1) at the position of the ear grooves (11) is provided with a plurality of double holes (12), the inner side wall and the inner bottom of the ear grooves (11) are provided with slide grooves (13), both ends of the inner side of the ear grooves (11) are provided with fixed seats (2), the top of the fixed seats (2) is fixed with a movable seat (23), the movable seats (23) are rotatably connected with a movable plate (24), the movable plates (24) are provided with double holes (25) at the position of the double holes (12), the double holes (25) are inserted with U-shaped rods (26), the outer wall of the fixed seat (2) at the position of the slide grooves (13) is fixed with a slider (22), the fixed seat (2) is provided with a plurality of double holes (25), and the inner side of the fixed seat (2) is provided with a plurality of double holes (25). A hydraulic cylinder (21) is installed on the top, and a pressure plate (3) is arranged above the position of the fixed seat (2) on the test bench (1). An adjustment groove (31) is bored at the ends of two adjacent pressure plates (3) away from each other, and a screw rod (41) is inserted through the inside of the adjustment groove (31). A nut (42) is threadedly connected to the outer wall of the screw rod (41), and a connecting plate (4) is fixed to the bottom of the screw rod (41). A pressure column seat (5) is provided at the end of the bottom of the pressure plate (3) away from the hydraulic cylinder (21), and a double hole three (33) is bored at one end of the two pressure plates (3) on one side close to the two pressure plates (3) on the other side, and a double rod (32) is fixed to one side of the double hole three (33) of the two pressure plates (3) on the other side.

2. The shock absorber damping force testing device according to claim 1, characterized in that: The sliding blocks (22) are respectively inserted into sliding grooves (13) of matching positions and are slidably connected thereto.

3. The shock absorber damping force testing device according to claim 1, characterized in that: The U-shaped rod (26) is respectively connected to the double hole 2 (25), and one end of the U-shaped rod (26) passing through the double hole 2 (25) is respectively inserted into the inside of the double hole 1 (12) at a matching position, and the outer diameters of the two ends of the U-shaped rod (26) are respectively matched with the inner diameters of the double hole 2 (25) and the double hole 1 (12).

4. The shock absorber damping force testing device according to claim 1, characterized in that: The double rods (32) are respectively inserted into the matching double holes (33), and the outer diameters of the double rods (32) are respectively matched with the inner diameters of the double holes (33).

5. The shock absorber damping force testing device according to claim 1, characterized in that: The pressure column seat (5) is fixedly connected to the bottom of the connecting plate (4) at one end away from the hydraulic cylinder (21).

6. The shock absorber damping force testing device according to claim 1, characterized in that: The top of the hydraulic cylinder (21) is fixedly connected to the bottom of the connecting plate (4) at one end away from the pressure column seat (5).

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