Automobile air spring volume test device

Abstract

The utility model discloses an automobile air spring volume test device which comprises a test bed, a V-shaped block is fixed on one side of the test bed, a fixed pressing mechanism is arranged at the V-shaped block of the test bed, a sliding block is arranged on the test bed in a sliding mode, the V-shaped block is fixed on the sliding block, and a movable pressing mechanism is arranged on the sliding block. The sliding block is driven by a push-pull mechanism arranged on the test bed, the fixed pressing mechanism comprises a pressing head, the pressing head is fixed to a rocker, one end of the rocker is rotationally arranged on the base, the other end of the rocker is rotationally provided with one end of a connecting rod, and the other end of the connecting rod is rotationally provided with one end of a crank. When the pressing head presses the connector of the air spring, the crank and the connecting rod are collinear, a reset spring is arranged between the crank and the base, the base is fixed to a test bed, the movable pressing mechanism and the fixed pressing mechanism are the same in structure, and a base of the movable pressing mechanism is fixed to the sliding block.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring technical field, concretely is a kind of automobile air spring volume test device. BACKGROUND

[0002] Automobile air spring has important function of buffering and shock absorption, and can adjust its length by charging and discharging, significantly optimize the comfort of vehicle. Before delivery, automobile air spring needs to go through a plurality of strict tests, and air spring volume test occupies an important position in performance evaluation and quality detection, and its core purpose is to accurately determine the effective volume inside air spring, to provide key data support for product design and performance optimization.

[0003] In prior art, air spring is usually connected to test bench by bolt. However, bolt connection mode has obvious disadvantages, and its dismounting process is relatively complex, and needs to use special tools such as wrench and sleeve. During installation, not only bolt hole needs to be accurately aligned, but also nut needs to be carefully tightened, and the whole process is time-consuming and laborious. Therefore, it is necessary to design a kind of automobile air spring volume test device which is convenient to dismount. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of automobile air spring volume test device to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of automobile air spring volume test device, including test bench, the V-shaped block is fixed on one side of the test bench, and the V-shaped block of test bench is provided with fixed pressure mechanism;

[0006] The test bench is provided with a sliding block, the sliding block is fixed with a V-shaped block, the sliding block is provided with a movable pressure mechanism, and the sliding block is driven by a push-pull mechanism arranged on the test bench;

[0007] The fixed pressure mechanism includes a pressure head, the pressure head is fixed on a rocker, one end of the rocker is rotatably arranged on a base, the other end of the rocker is rotatably arranged with one end of a connecting rod, the other end of the connecting rod is rotatably arranged with one end of a crank, the other end of the crank is rotatably arranged on the base, when the pressure head is pressed against the connector of air spring, the crank is collinear with the connecting rod, a return spring is arranged between the crank and the base, and the base is fixed on the test bench;

[0008] The movable pressure mechanism and the fixed pressure mechanism are the same structure, and the base of the movable pressure mechanism is fixed on the sliding block;

[0009] A rope is fixed between the crank of the fixed pressure mechanism and the movable pressure mechanism, and the rope is driven by a pulling rope mechanism arranged on the test bench;

[0010] A constant-pressure water supply component is fixed below the test bench.

[0011] Preferably, the push-pull mechanism, the pull rope mechanism and the constant pressure water supply component are electrically connected to the control module.

[0012] Preferably, the control module is fixed on the test bench, and the control module is a 32-bit single-chip microcomputer.

[0013] Preferably, the push-pull mechanism is an electric push rod, the fixed end of the electric push rod is fixed on the test bench, the movable end of the electric push rod is fixed on the sliding block, and the electric push rod is electrically connected to the control module.

[0014] Preferably, the pull rope mechanism comprises a ring buckle, the ring buckle is sleeved on the rope, the ring buckle is fixed on the movable end of the air cylinder, the fixed end of the air cylinder is fixed on the test bench, the air cylinder pipeline is connected to the reversing valve, and the reversing valve is electrically connected to the control module.

[0015] Preferably, the air cylinder is a single-acting cylinder, and the single-acting cylinder is kept extended in a free state.

[0016] Preferably, the test bench is fixed with a rope protection elbow below, the rope passes through the rope protection elbow, and the sliding block is also fixed with a rope protection elbow below.

[0017] Preferably, the constant pressure water supply component comprises a water tank, the water tank is fixed below the test bench, the water tank pipeline is connected to the variable frequency pump, the variable frequency pump is fixed on the side of the water tank, the variable frequency pump pipeline is connected to the inflation port of the air spring, a pressure sensor is installed on the pipeline from the variable frequency pump to the inflation port of the air spring, the pressure sensor is electrically connected to the control module, and the variable frequency pump is electrically connected to the control module.

[0018] Preferably, the air spring deflation port pipeline is connected to the water inlet of the flow sensor, the water outlet of the flow sensor is connected to the water tank, and the flow sensor is electrically connected to the control module.

[0019] Preferably, the reset spring is a torsion spring, one end of the torsion spring is fixed on the base, and the other end of the torsion spring is fixed on the crank.

[0020] Compared with the prior art, the air spring is placed on the test bench first, and the connecting head of the air spring is in contact with the V-shaped block. The V-shaped block can position the connecting head at both ends of the air spring, effectively limit the movement of the air spring in the front-back and left-right directions, then the pull rope mechanism is started to drive the constant pressure tightening mechanism and the dynamic tightening mechanism to act synchronously, so that the pressure head can quickly press the connecting head of the air spring. Through this pressing mode, the movement of the air spring in the up-down direction is limited. When the pressure head presses the connecting head, the crank and the connecting rod reach the collinear state, and the tightening mechanism enters the self-locking state. The whole installation process is simple to operate, and the air spring can be quickly installed.

[0021] Before installing the air spring, the push-pull mechanism first drives the slider to move, moving the moving clamping mechanism away from the fixed clamping mechanism, thus making room for the placement of the air spring. During this process, the rope is tensioned, preparing for the rope-pulling mechanism to drive the fixed and moving clamping mechanisms to move synchronously. Through the cooperation of the push-pull mechanism, the slider, and the rope, the two clamping mechanisms can be driven synchronously. During the test, the push-pull mechanism drives the slider to move again, compressing the air spring. At this time, the moving clamping mechanism moves closer to the fixed clamping mechanism, and the rope relaxes accordingly, thus effectively avoiding possible motion interference between the fixed clamping mechanism, the slider, and the rope, ensuring the smooth progress of the test.

[0022] When disassembling an air spring, the operator pushes the connecting rod or crank to make the crank and connecting rod no longer collinear, thus releasing the self-locking state of the clamping mechanism. Subsequently, the crank rotates in the opposite direction under the action of the return spring, which in turn drives the connecting rod to move in the opposite direction, which in turn drives the rocker arm to rotate in the opposite direction, thereby moving the pressure head away from the air spring's connection head. The entire disassembly process is simple and convenient, facilitating the disassembly of the air spring. Attached Figure Description

[0023] Figure 1 This is an isometric view of the present invention, showing the clamping mechanism in the unlocked state;

[0024] Figure 2 This is the front view of the present invention, showing the clamping mechanism in a self-locking state;

[0025] Figure 3 This is an isometric drawing of the rope-pulling mechanism of this utility model;

[0026] Figure 4 This is an isometric view of the slider and dynamic clamping mechanism of this utility model.

[0027] In the diagram: 1. Test bench, 2. V-block, 3. Slider, 4. Rope, 5. Electric push rod, 6. Ring buckle, 7. Single-acting cylinder, 8. Rope bend, 9. Water tank, 10. Variable frequency pump, 20. Fixed clamping mechanism, 21. Pressure head, 22. Rocker arm, 23. Connecting rod, 24. Crank, 25. Base, 30. Dynamic clamping mechanism, 40. Air spring, 41. Connector. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides a technical solution: a test device for the volume of automotive air springs, such as...Figure 1 As shown, the test bench 1 is included, and a V-shaped block 2 is fixed on one side of the test bench 1. A constant pressure mechanism 20 is provided at the V-shaped block 2 of the test bench 1.

[0030] like Figure 1 As shown, a slider 3 is slidably mounted on the test bench 1, a V-shaped block 2 is fixed on the slider 3, a dynamic clamping mechanism 30 is mounted on the slider 3, and the slider 3 is driven by a push-pull mechanism mounted on the test bench 1.

[0031] like Figure 2 As shown, the fixed clamping mechanism 20 includes a pressure head 21, which is fixed on a rocker arm 22. One end of the rocker arm 22 is rotatably mounted on a base 25, and the other end of the rocker arm 22 is rotatably mounted on a connecting rod 23. The other end of the connecting rod 23 is rotatably mounted on a crank 24, and the other end of the crank 24 is rotatably mounted on the base 25. When the pressure head 21 presses against the connector 41 of the air spring 40, the crank 24 and the connecting rod 23 are collinear. A return spring is provided between the crank 24 and the base 25. The base 25 is fixed on the test bench 1.

[0032] The rotation of crank 24 can drive connecting rod 23 to move, which in turn drives rocker arm 22 to rotate, which in turn drives pressure head 21 to rotate, which in turn drives pressure head 21 to press the connector 41 of air spring 40.

[0033] like Figure 2 As shown, the dynamic clamping mechanism 30 has the same structure as the fixed clamping mechanism 20, and the base 25 of the dynamic clamping mechanism 30 is fixed on the slider 3.

[0034] like Figure 2 As shown, a rope 4 is fixed between the crank 24 of the fixed clamping mechanism 20 and the moving clamping mechanism 30, and the rope 4 is driven by a rope pulling mechanism set on the test bench 1.

[0035] The rope pulling mechanism can drive the rope 4 to move, which in turn drives the crank 24 to rotate.

[0036] like Figure 1 As shown, a constant pressure water supply component is fixed under the test bench 1.

[0037] In the installation of air spring 40, first place it on the test bench 1, so that the air spring 40 connector 41 and V-block 2 contact. V-block 2 can be positioned at both ends of the air spring 40 connector 41, effectively limit the air spring 40 front and back and left and right direction movement, then, pull the rope mechanism, drive the constant pressure mechanism 20 and dynamic tight mechanism 30 synchronous action, so that the pressure head 21 can quickly compress the air spring 40 connector 41, through this way of compression, limit the air spring 40 up and down movement, when the pressure head 21 compression connector 41, crank 24 and connecting rod 23 to reach the collinear state, the compression mechanism into the self-locking state, the whole installation process is simple and easy to operate, can realize the quick installation of air spring 40.

[0038] Before installing the air spring 40, the push-pull mechanism first drive the slider 3 movement, so that the dynamic pressure mechanism 30 away from the constant pressure mechanism 20, air spring 40 for the placement of space, in this process, the rope 4 is tensioned, for the pull rope mechanism driven constant pressure mechanism 20 and dynamic pressure mechanism 30 synchronous action ready, through the push-pull mechanism, slider 3 and rope 4 cooperation, easy to synchronous drive two compression mechanism, when the test, the push-pull mechanism again drive the slider 3 movement, so that the air spring 40 compression, dynamic pressure mechanism 30 close to the constant pressure mechanism 20, the rope 4 with the release, thereby effectively avoiding the constant pressure mechanism 20, slider 3 and rope 4 between the possible movement interference, ensure the smooth progress of the test.

[0039] When disassembling the air spring 40, the operator pushes the connecting rod 23 or crank 24, so that the crank 24 and connecting rod 23 is no longer collinear, the compression mechanism to remove the self-locking state, then the crank 24 reverse rotation under the action of the reset spring, and then drive the connecting rod 23 reverse motion, and then drive the rocker 22 reverse rotation, and then make the pressure head 21 away from the air spring 40 connector 41, the whole disassembly process is simple and convenient, easy to disassemble the air spring 40.

[0040] In order to facilitate the control, the push-pull mechanism, pull the rope mechanism and constant pressure water components electrically connected to the control module, the control module is fixed on the test bench 1, the control module for 32 bit single chip microcomputer.

[0041] In order to facilitate the compression of air spring 40, the push-pull mechanism for electric push rod 5, the fixed end of the electric push rod 5 is fixed on the test bench 1, the movable end of the electric push rod 5 is fixed on the slider 3, the electric push rod 5 electrically connected to the control module.

[0042] As Figure 3As shown, the pull rope mechanism includes a ring buckle 6, which is sleeved on the rope 4, the ring buckle 6 is fixed on the movable end of the cylinder, the fixed end of the single-acting cylinder 7 is fixed on the test bench 1, the cylinder pipeline is connected to the reversing valve, the reversing valve is electrically connected to the control module, the cylinder is a single-acting cylinder 7, and the single-acting cylinder 7 remains extended in a free state.

[0043] When the driving compression mechanism is actuated, the control module first controls the reversing valve to act, and then the single-acting cylinder 7 is filled with air, and then the single-acting cylinder 7 is shortened, and then the rope 4 is moved, and then the crank 24 is rotated, and then the pressure head 21 is pressed against the connecting head 41 of the air spring 40, and then the control module controls the reversing valve to act, and then the single-acting cylinder 7 is disconnected, and the single-acting cylinder 7 is reset.

[0044] As shown in Figure 4 In order to change the direction of the rope 4, a rope protection elbow 8 is fixed below the test bench 1, and the rope 4 passes through the rope protection elbow 8, and the slide block 3 also has a rope protection elbow 8 fixed below.

[0045] As shown in Figure 1 The constant pressure water supply component includes a water tank 9, which is fixed below the test bench 1, the water tank 9 is connected to the variable frequency pump 10, the variable frequency pump 10 is fixed on the side of the water tank 9, the variable frequency pump 10 is connected to the air spring 40 through a pipeline, a pressure sensor is installed on the pipeline from the variable frequency pump 10 to the air spring 40, the pressure sensor is electrically connected to the control module, the variable frequency pump 10 is electrically connected to the control module, the air spring 40 is connected to the water inlet of the flow sensor through a pipeline, the water outlet of the flow sensor is connected to the water tank 9 through a pipeline, and the flow sensor is electrically connected to the control module.

[0046] In order to facilitate the reset of the crank 24, the reset spring is a torsion spring, one end of the torsion spring is fixed on the base 25, and the other end of the torsion spring is fixed on the crank 24.

[0047] Working process: before starting the test, the control module controls the electric push rod 5 to shorten, and then drives the slide block 3 to move, and then drives the movable compression mechanism 30 to move, so that the movable compression mechanism 30 moves away from the fixed compression mechanism 20, and then the rope 4 is tensioned, and a space is left for the placement of the air spring 40, and then the air spring 40 is placed on the test bench 1, so that the connecting head 41 of the air spring 40 is in contact with the V-shaped block 2, and then the control module fills the single-acting cylinder 7 with air, and then the single-acting cylinder 7 is shortened, and then the ring buckle 6 is lowered, and then the rope 4 is moved, and then the crank 24 is rotated, and then the connecting rod 23 is moved, and then the rocker 22 is rotated, and then the pressure head 21 is rotated, and then the pressure head 21 is pressed against the connecting head 41 of the air spring 40.

[0048] After the pressing head 21 presses the connecting head 41 of the air spring 40, the crank 24 is collinear with the connecting rod 23, the pressing mechanism is self-locked, the control module controls the single-acting cylinder 7 to stop supplying air, and the single-acting cylinder 7 is reset under the action of the internal spring.

[0049] Then, the test is started, the control module starts the variable frequency pump 10, fills the air spring 40 with water, discharges the air in the air spring 40, and ensures that the water pressure is constant, then the control module controls the electric push rod 5 to extend, thereby driving the sliding block 3 to move, thereby compressing the air spring 40, and recording the discharged water volume once every time a certain distance is compressed, and measuring and recording the maximum outer diameter until the air spring 40 is compressed to the maximum state.

[0050] When the test is completed, the disassembly operation is started. First, the control module closes the variable frequency pump 10 to stop supplying water to the air spring 40, and the operator pushes the connecting rod 23 or the crank 24, so that the crank 24 is no longer collinear with the connecting rod 23, the pressing mechanism is released from the self-locking state, then the crank 24 reversely rotates under the action of the reset spring, thereby driving the connecting rod 23 to move reversely, thereby driving the rocker 22 to reversely rotate, thereby making the pressing head 21 away from the connecting head 41 of the air spring 40.

[0051] After the pressing head 21 is away from the connecting head 41 of the air spring 40, the operator takes the air spring 40 off the test bench 1.

[0052] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A test device for the volume of an automotive air spring, characterized in that: The test bench (1) is provided with a V-shaped block (2) fixed on one side, and a constant pressure tightening mechanism (20) is arranged at the V-shaped block (2) of the test bench (1); A sliding block (3) is arranged on the test bench (1) and provided with the V-shaped block (2), a dynamic pressure tightening mechanism (30) is arranged on the sliding block (3), and the sliding block (3) is driven by a push-pull mechanism arranged on the test bench (1); The constant pressure tightening mechanism (20) comprises a pressure head (21) fixed on a rocker (22), one end of the rocker (22) is rotatably arranged on a base (25), the other end of the rocker (22) is rotatably arranged on one end of a connecting rod (23), the other end of the connecting rod (23) is rotatably arranged on one end of a crank (24), the other end of the crank (24) is rotatably arranged on the base (25), when the pressure head (21) presses the connecting head (41) of the air spring (40), the crank (24) is collinear with the connecting rod (23), a reset spring is arranged between the crank (24) and the base (25), and the base (25) is fixed on the test bench (1); The dynamic pressure tightening mechanism (30) is the same as the constant pressure tightening mechanism (20), and the base (25) of the dynamic pressure tightening mechanism (30) is fixed on the sliding block (3); The crank (24) between the constant pressure tightening mechanism (20) and the dynamic pressure tightening mechanism (30) is fixed with a rope (4), and the rope (4) is driven by a rope pulling mechanism arranged on the test bench (1); A constant pressure water supply component is fixed below the test bench (1).

2. The device according to claim 1, wherein: The push-pull mechanism, the rope pulling mechanism and the constant pressure water supply component are electrically connected to the control module.

3. The device according to claim 2, wherein: The control module is fixed on the test bench (1), and the control module is a 32-bit single-chip microcomputer.

4. The device according to claim 2, wherein: The push-pull mechanism is an electric push rod (5), the fixed end of the electric push rod (5) is fixed on the test bench (1), the movable end of the electric push rod (5) is fixed on the sliding block (3), and the electric push rod (5) is electrically connected to the control module.

5. The device for testing the volume of an air spring of a vehicle according to claim 2, characterized in that: The rope pulling mechanism comprises a ring buckle (6) sleeved on the rope (4), the ring buckle (6) is fixed on the movable end of the air cylinder, the fixed end of the air cylinder is fixed on the test bench (1), the air cylinder pipeline is connected to a reversing valve, and the reversing valve is electrically connected to the control module.

6. The device for testing the volume of an air spring of a vehicle according to claim 5, wherein: The air cylinder is a single-acting air cylinder (7), and the single-acting air cylinder (7) is kept extended in a free state.

7. The device for testing the volume of an air spring of a vehicle according to claim 1, wherein: A rope protection elbow (8) is fixed below the test bench (1), the rope (4) passes through the rope protection elbow (8), and the sliding block (3) is also provided with a rope protection elbow (8).

8. The device for testing the volume of an air spring of a vehicle according to claim 2, wherein: The constant pressure water supply component comprises a water tank (9) fixed below the test bench (1), the water tank (9) is connected to a variable frequency pump (10), the variable frequency pump (10) is fixed on the side of the water tank (9), the variable frequency pump (10) is connected to the inflation port of the air spring (40), a pressure sensor is installed on the pipeline from the variable frequency pump (10) to the inflation port of the air spring (40), the pressure sensor is electrically connected to the control module, and the variable frequency pump (10) is electrically connected to the control module.

9. The device according to claim 8, wherein: The air spring (40) is connected to the water inlet of the flow sensor, the water outlet of the flow sensor is connected to the water tank (9), and the flow sensor is electrically connected to the control module.

10. The device for testing the volume of an air spring of a vehicle according to claim 1, wherein: The reset spring is a torsion spring, one end of the torsion spring is fixed on the base (25), and the other end of the torsion spring is fixed on the crank (24).

Images