Buffer block testing equipment

Abstract

The utility model provides buffer block testing equipment, which comprises an equipment base, an equipment main body, an equipment top cover, an air inlet valve, an exhaust valve and a buffer block fixing seat, the equipment body is vertically through and transparent, and the equipment body is detachably connected with the equipment base and the equipment top cover in an airtight mode. The buffer block fixing seat is used for being connected with a buffer block to be tested. Wherein when the buffer block test equipment tests the buffer block to be tested, the connection between the buffer block to be tested and the buffer block fixing seat corresponds to the connection between the buffer block to be tested and the buffer block fixing seat in a working environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of buffer block test equipment, in particular to a kind of equipment for testing the positioning stability of buffer block for automobile under the pressure change of specific environment. BACKGROUND

[0002] Suspension system is one of the main components of automobile, specifically, suspension system absorbs and / or filters vibration through the elastic module (such as spring or air spring) arranged inside. For the elastic module, the prior art usually needs to arrange buffer block inside, so as to provide buffering and / or additional damping and / or limit, prevent the elastic module from being damaged due to excessive compression. However, in the actual operation of air spring shock absorber, the environmental pressure where the buffer block is located will change due to the compression and stretching of the elastic module. The change of environmental pressure will cause the deformation of the buffer block (such as shrinkage, expansion or irregular deformation), so that the buffer block falls off from its fixed seat, and the buffer block fails.

[0003] Therefore, it is necessary to develop a buffer block test equipment, which can simulate the change of specific environmental pressure under working conditions and test the positioning stability of buffer block. SUMMARY

[0004] In order to solve the technical problem that the positioning stability of buffer block under the change of specific environmental pressure cannot be tested in the prior art, the purpose of the utility model is to provide a new buffer block test equipment which can solve the above problems.

[0005] Therefore, the utility model provides a buffer block test equipment, which comprises:

[0006] equipment base, equipment main body, equipment top cover, air inlet valve, air outlet valve and buffer block fixing seat;

[0007] The equipment main body is through and transparent from top to bottom, and the equipment main body is detachably and airtightly connected with the equipment base and the equipment top cover, so that the equipment base, the equipment main body and the equipment top cover jointly constitute a hollow structure;

[0008] The air inlet valve and the air outlet valve are arranged on the equipment base or the equipment top cover, and are respectively communicated with the hollow structure;

[0009] The buffer block fixing seat is arranged in the hollow structure and detachably connected with the equipment top cover;

[0010] The buffer block fixing seat is used for connecting with the buffer block to be tested, and the buffer block to be tested is kept in the hollow structure;

[0011] In which the connection between the to-be-tested cushion block and the cushion block fixing seat (typically a tight fit connection) corresponds to the connection between the to-be-tested cushion block and its fixing seat in a working environment when the cushion block testing device tests the to-be-tested cushion block.

[0012] It is understood by those skilled in the art that a cushion block (particularly a polyurethane cushion block) deforms due to changes in environmental pressure. Specifically, when the environmental pressure increases, the environmental pressure is greater than the pressure of the bubbles inside the cushion block, and the cushion block shrinks. When the environmental pressure decreases, the environmental pressure is less than the pressure of the bubbles inside the cushion block, and the cushion block expands. When the environmental pressure fluctuates continuously, the cushion block deforms irregularly. In a use state (for example, when the cushion block is arranged in a spring module of an automobile suspension system), such deformation of the cushion block sometimes causes the cushion block to fall off its fixing seat, and the cushion block fails. The cushion block testing device of the present application can simulate changes in a specific environmental pressure in a working state, and test the positioning stability of the cushion block. Through verification by the cushion block testing device of the present application, a skilled person can ensure that the deformation of the cushion block caused by changes in environmental pressure is within a controllable range, and the positioning stability of the cushion block is ensured.

[0013] The present application also describes a method for testing a cushion block, which comprises:

[0014] providing a cushion block testing device as described above;

[0015] opening the cushion block testing device by disassembling the device top cover, and then connecting the to-be-tested cushion block with the cushion block fixing seat;

[0016] closing the cushion block testing device with the device top cover;

[0017] connecting the air inlet valve with the air source, opening the air inlet valve and closing the air outlet valve to enter the inflation stage;

[0018] closing the air inlet valve to enter the pressure maintaining stage, and the pressure maintaining stage lasts for a predetermined time;

[0019] observing the state of the cushion block through the device main body in transparent form in the pressure maintaining stage;

[0020] opening the air outlet valve to enter the air exhaust stage.

[0021] In the use of the cushion block testing device described above, if the cushion block falls off the cushion block fixing seat in the pressure maintaining stage, those skilled in the art can determine that the deformation of the cushion block exceeds a threshold value, and the positioning of the cushion block is unstable, and the cushion block may fall off in use.

[0022] The utility model also describes the purpose of preceding buffer block test equipment, is used for testing the positioning stability of test buffer block. In a preferred embodiment, the buffer block test equipment of the utility model is further provided with vertical direction actuator, and is further provided with vertical direction telescopic structure in the equipment main part, wherein the vertical direction actuator drives the equipment main part telescopic by the vertical direction telescopic structure, thereby changing the volume of buffer block test equipment. The above-mentioned configuration makes, can periodically change the volume of buffer block test equipment in the pressure maintaining stage (the gas amount in the equipment is invariable), thereby making the pressure of buffer block test equipment also correspondingly periodically change. This periodic change pressure simulates the environmental pressure periodic change that buffer block is subjected to due to the compression and stretching of elastic module in working environment, makes the pressure simulated by buffer block test equipment more close to the actual situation in working environment, and the test effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0023] The advantages and features of the utility model will now be described in detail with reference to the drawings, in which the components are not necessarily drawn to scale, and in which:

[0024] Figure 1 An exploded view of one exemplary embodiment of the buffer block test equipment of the utility model is shown.

[0025] Figure 2 An isometric view of the buffer block test equipment of the utility model is shown. Figure 1 A front view of the buffer block test equipment is shown, wherein the buffer block test equipment is cut along the vertical plane to show its internal details.

[0026] Figure 3 A front view of another exemplary embodiment of the buffer block test equipment of the utility model is shown, wherein the buffer block test equipment is cut along the vertical plane to show its internal details.

[0027] It should be understood that the drawings are drawn for example purposes only and should not be considered limiting of the utility model. DETAILED DESCRIPTION

[0028] In this specification, the "vertical, upward, downward" is Figure 1 The directions of the buffer block test equipment are divided.

[0029] In the present specification, the "inflation phase" refers to a phase in which gas enters the cushion block testing device, and the pressure of the cushion block testing device tends to the pressure of the gas source. The inflation phase ends when the pressure of the cushion block testing device is equal to the pressure of the gas source. The "pressure maintaining phase" refers to a phase in which no gas enters or exits the cushion block testing device, i.e., a phase in which the amount of gas inside the device is constant. The pressure maintaining phase lasts for a predetermined time. The "deflation phase" refers to a phase in which gas exits the cushion block testing device, and the pressure of the cushion block testing device tends to atmospheric pressure. The deflation phase ends when the pressure of the cushion block testing device is equal to atmospheric pressure.

[0030] The utility model provides a kind of cushion block testing device, it includes:

[0031] Device base, device main body, device top cover, air inlet valve, exhaust valve and cushion block fixing seat;

[0032] The device main body is through and is in transparent form, and the device main body is detachably airtight connection with the device base and the device top cover, so that the device base, device main body and device top cover jointly constitute hollow structure;

[0033] The air inlet valve and exhaust valve are arranged in the device base or the device top cover, and are respectively communicated with the hollow structure;

[0034] The cushion block fixing seat is arranged in the hollow structure, and is detachably connected with the device top cover;

[0035] The cushion block fixing seat is used to be connected with the cushion block to be tested, and the cushion block to be tested is maintained in the hollow structure;

[0036] Wherein, when the cushion block testing device tests the cushion block to be tested, the connection (usually tight fit connection) between the cushion block to be tested and the cushion block fixing seat corresponds to the connection between the cushion block to be tested and its fixing seat in working environment.

[0037] In one preferred embodiment of the present application, the plurality of buffer block fixing seats are provided, wherein each of the buffer block fixing seats corresponds to one type of the buffer block to be tested. In this way, the skilled person can select a buffer block fixing seat to be connected to the device top cover according to the type of the buffer block to be tested before performing the test. The provision of the plurality of buffer block fixing seats expands the application range of the buffer block testing device of the present application, so that it is suitable for testing various types of buffer blocks. The buffer block fixing seat comprises, for example, a fixing portion and a connecting portion, the fixing portion is detachably connected to the device top cover by, for example, a screw, and the connecting portion is used to connect to the buffer block to be tested. The connection between the connecting portion and the buffer block to be tested is in the same form and has the same characteristics (such as tightness) as the connection between the buffer block to be tested and its fixing seat in the working environment. For example, the connection can be a tight fit connection or a clamping connection.

[0038] In one preferred embodiment of the present application, the air inlet valve and the air outlet valve are arranged on the device base. In this way, the skilled person can disassemble the device top cover without affecting the air path, which facilitates the replacement of the buffer block.

[0039] In one preferred embodiment of the present application, the buffer block testing device further comprises a pressure gauge and a booster pump, the pressure gauge and the booster pump are connected in sequence with the air inlet valve, wherein the pressure gauge is used to detect the air inlet pressure, and the booster pump is used to boost the air inlet pressure. More preferably, the boost range of the booster pump is between 0MPa and 2MPa.

[0040] In one preferred embodiment of the present application, the device main body is in the form of a cylindrical barrel, wherein the outer diameter of the cylindrical barrel can be, for example, in the range of 50mm to 300mm, and the height of the cylindrical barrel can be, for example, in the range of 50mm to 300mm.

[0041] In one preferred embodiment of the present application, the buffer block testing device further comprises a movable workbench, and the hollow structure is arranged on the movable workbench. In this way, the buffer block testing device can be freely moved as needed.

[0042] In one preferred embodiment of the present application, the buffer block testing device further comprises at least one safety shield with an open door, and the hollow structure is arranged in the safety shield. The safety shield has certain explosion-proof performance, which ensures the safety of the test.

[0043] In one preferred embodiment of the present application, the cushion block testing device is further provided with a vertical direction actuator, and the device main body is further provided with a vertical direction telescopic structure, wherein the vertical direction actuator drives the device main body to telescope by means of the vertical direction telescopic structure, so as to change the volume of the cushion block testing device. Preferably, the vertical direction telescopic structure is a multi-layer nested structure of the device main body. More preferably, the vertical direction actuator is an electric cylinder moving in the vertical direction, and the output end of the electric cylinder is connected with the device top cover.

[0044] The present application also describes a method for testing a cushion block, which comprises:

[0045] providing a cushion block testing device as described above;

[0046] opening the cushion block testing device by disassembling the device top cover, and then connecting the cushion block to be tested with the cushion block fixing seat;

[0047] closing the cushion block testing device by using the device top cover;

[0048] connecting the air inlet valve with the air source, opening the air inlet valve and closing the air outlet valve to enter the inflation stage;

[0049] closing the air inlet valve to enter the pressure maintaining stage, and the pressure maintaining stage lasts for a predetermined time;

[0050] observing the state of the cushion block through the device main body in transparent form in the pressure maintaining stage;

[0051] opening the air outlet valve to enter the exhaust stage.

[0052] In the use of the cushion block testing device described above, if the cushion block falls off from the cushion block fixing seat in the pressure maintaining stage, the person skilled in the art can make a judgment that the deformation of the cushion block exceeds the threshold value, the cushion block is not stably positioned, and may fall off in use.

[0053] The present application also describes another method for testing a cushion block, which comprises:

[0054] providing a cushion block testing device with a vertical direction actuator as described above;

[0055] opening the cushion block testing device by disassembling the device top cover, and then connecting the cushion block to be tested with the cushion block fixing seat;

[0056] closing the cushion block testing device by using the device top cover;

[0057] -- connecting the air inlet valve with the air source, opening the air inlet valve and closing the air outlet valve to enter the inflation stage;

[0058] -- closing the air inlet valve to enter the pressure maintaining stage, opening the vertical direction actuator in the pressure maintaining stage to periodically change the volume of the buffer block testing device, and ensuring that the pressure maintaining stage lasts for a predetermined time;

[0059] -- observing the state of the buffer block through the device body in transparent form in the pressure maintaining stage;

[0060] -- opening the air outlet valve to enter the air exhaust stage.

[0061] Similarly, in the use of the buffer block testing device described above, if the buffer block falls off from the buffer block fixing seat in the pressure maintaining stage, the person skilled in the art can make a judgment that the deformation of the buffer block exceeds the threshold value, the buffer block is not stably positioned, and it is possible to fall off in use. In addition, the above use of the buffer block testing device with the vertical direction actuator enables the volume of the buffer block testing device to be periodically changed in the pressure maintaining stage (the amount of gas inside the device is constant), so that the pressure of the buffer block testing device also changes periodically correspondingly. This periodic change in pressure simulates the periodic change in environmental pressure that the buffer block undergoes due to the compression and stretching of the elastic module in the working environment, so that the pressure simulated by the buffer block testing device can be closer to the actual situation in the working environment, and the testing effect is better.

[0062] The various components of the buffer block testing device of the utility model (except the device body) can be made of plastic, metal and the like, and can be prepared by using common processing and molding methods. Specifically, the plastic material can be ABS, nylon, polyurethane and the like, and the metal material can be stainless steel, aluminum, copper and the like. If plastic material is used, the common processing and molding method is injection molding, molding, extrusion molding and the like. If metal material is used, the common processing and molding method is machining, casting, stamping, bending and the like. The device body of the buffer block testing device of the utility model can be made of glass, polyacrylic acid resin or polycarbonate and the like, and is preferably processed and molded by using extrusion molding and the like.

[0063] In the most basic case, the buffer block testing device of the utility model has a substantially stable pressure in the pressure maintaining stage. Further, the buffer block testing device can also be additionally provided with a vertical direction actuator and a vertical direction telescopic structure. In this way, the pressure can be periodically changed in the pressure maintaining stage, so that the test is closer to the actual situation in the working environment, and the testing effect is better.

[0064] The specific implementation schemes of the utility model are described below in combination with the drawings, but the utility model is not limited by these specific implementation schemes.

[0065] Figure 1 An exploded view of an exemplary embodiment of the buffer block testing device of this utility model is shown. Figure 1 As shown, the buffer block testing equipment includes: an equipment base 101, an equipment body 102, an equipment top cover 103, an air inlet valve 104, an air outlet valve 105, and a buffer block fixing seat 106. Furthermore, Figure 1 The buffer block 200 is also shown. The main body 102 of the device is in the form of a transparent cylindrical tube, allowing technicians to observe the internal condition of the buffer block testing device from the outside.

[0066] Figure 2 It shows Figure 1 The diagram shows a front view of the buffer block testing device, in which the device has been cut along a vertical plane to reveal its internal details. (See diagram for reference.) Figure 2 As shown, the main body 102 is mounted on the equipment base 101 and is detachably and airtightly connected to the equipment base 101. The top cover 103 is mounted on the main body 102 and is detachably and airtightly connected to the main body 102. The equipment base 101, the main body 102, and the top cover 103 together form a hollow structure. An inlet valve 104 and an exhaust valve 105 are mounted on the equipment base 101 and communicate with the hollow structure through a channel inside the equipment base 101. A buffer block fixing seat 106 is located below the top cover 103 and is screwed to the top cover 103 (screws not shown). The buffer block 200 is tightly fitted to the buffer block fixing seat 106, holding the buffer block 200 within the hollow structure. The tight fit between the buffer block 200 and the buffer block fixing seat 106 corresponds to the connection between the buffer block 200 and its fixing seat under operating conditions.

[0067] Figure 3 A front view of another exemplary embodiment of the buffer block testing device of the present invention is shown, wherein the buffer block testing device is cut along a vertical plane to show its internal details. Figure 3 The buffer block test equipment shown is Figure 2 The main difference in the buffer block testing device shown is that the main body 102' is a multi-layered, nested transparent cylindrical form, including an upper main body 102'A and a lower main body 102'B. This multi-layered nested structure acts as a vertical telescopic structure, allowing the main body 102' to extend and retract vertically. Furthermore, as... Figure 3 As shown, the buffer block testing device also has (as indicated by the arrow in the figure) an electric cylinder 107 capable of moving in the vertical direction, the output end of which is connected to the top cover 103 of the device. This arrangement allows the electric cylinder 107 to drive the main body 102' of the device to extend and retract via this multi-layered nested structure, thereby changing the volume of the buffer block testing device.

[0068] Those skilled in the art will understand that, although Figures 1 to 3 The technical solution shown contains a buffer block, but the buffer block itself is not a necessary component of the buffer block testing device of the utility model. Those skilled in the art will also understand that, in actual use, components such as the pressure gauge, booster pump, movable workbench, safety shield and the like described above can be added according to specific requirements. These are all within the protection scope of the utility model.

Claims

1. A bumper block testing apparatus, characterized by, The application relates to a buffer block testing device. The device base, the device body, the device top cover, the air inlet valve, the air outlet valve and the buffer block fixing seat are included. The device body is in a hollow structure and is transparent. The air inlet valve and the air outlet valve are arranged on the device base or the device top cover and are in communication with the hollow structure. The buffer block fixing seat is arranged in the hollow structure and is detachably connected with the device top cover. The buffer block fixing seat is used for connecting with a buffer block to be tested and holding the buffer block to be tested in the hollow structure. When the buffer block testing device tests the buffer block to be tested, the connection between the buffer block to be tested and the buffer block fixing seat corresponds to the connection between the buffer block to be tested and its fixing seat in a working environment. The buffer block testing device further comprises a pressure gauge and a booster pump which are sequentially connected with the air inlet valve.

2. The bumper block testing apparatus of claim 1, wherein, The pressure gauge is used for detecting the air inlet pressure, and the booster pump is used for boosting the air inlet pressure.

3. The bumper block testing apparatus of claim 1 or 2, wherein, The buffer block fixing seat is a plurality of buffer block fixing seats, and each buffer block fixing seat corresponds to one variety of the buffer block to be tested.

4. The bumper block testing apparatus of claim 1 or 2, wherein, The air inlet valve and the air outlet valve are arranged on the device base.

5. The bumper block testing apparatus of claim 1 or 2, wherein, The device body is in the form of a cylindrical barrel.

6. The bumper block testing apparatus of claim 5, wherein, The outer diameter of the cylindrical barrel is in the range of 50mm to 300mm, and the height of the cylindrical barrel is in the range of 50mm to 300mm.

7. The bumper block testing apparatus of claim 5, wherein, The buffer block testing device further comprises a vertical actuator and a vertical telescopic structure. The vertical actuator drives the device body to telescope through the vertical telescopic structure, so as to change the volume of the buffer block testing device. The vertical telescopic structure is a multi-layer nested structure of the device body. The vertical actuator is an electric cylinder which moves in the vertical direction. The output end of the electric cylinder is connected with the device top cover.

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