Oil seal testing device

Abstract

The present invention discloses an oil seal test device including an oil seal installation mechanism, a moving mechanism, a balancing mechanism and a base. The oil seal installation mechanism is provided with an oil storage cavity for containing oil and a mounting port connected to the oil storage cavity. The mounting port is used to fix the oil seal to be tested and the two are sealed and matched; the moving mechanism includes a moving part that is sealed and matched with the oil seal to be tested and can move relative to the oil seal to be tested; the balancing mechanism includes a balancing part provided with a balancing cavity, a first connecting pipe for connecting the upper part of the balancing cavity with the upper part of the oil storage cavity, and a second connecting pipe for connecting the lower part of the balancing cavity with the lower part of the oil storage cavity. The present invention realizes internal pressure balance by providing a balancing part that forms a connecting loop with the oil storage cavity of the oil seal installation mechanism, so that the oil seal test device can adapt to the testing of oil seals with larger diameters, testing environments with higher pressures, and testing environments with higher temperatures.

Description

Technical Field

[0001] The invention relates to the technical field of oil seal life detection, in particular to an oil seal test device. Background Art

[0002] When testing oil seals, existing oil seal testers simulate the impact and durability of oil seals in different harsh environments such as temperature, pressure, and installation location, as the requirements for various oil seal indicators are increasing. Traditional oil seal testers can only test the leakage of oil seals with smaller diameters, low pressure, and temperatures below 150 degrees. If a larger diameter, higher pressure, or higher temperature is used, the test will continue to work and generate energy due to the above conditions, causing the internal pressure to continue to increase. This phenomenon will cause the internal test oil to overflow, or the test shaft to be pushed outward due to excessive pressure, resulting in the need to terminate the test, and there is a possibility of damage to electrical components. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides an oil seal testing device, which realizes internal pressure balance by arranging a balancing member that forms a connecting circuit with the oil storage chamber of the oil seal mounting mechanism, so that the oil seal testing device can adapt to the testing of oil seals with larger diameters, testing environments with higher pressures, and testing environments with higher temperatures.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An oil seal testing device, comprising:

[0006] The oil seal installation mechanism is provided with an oil storage cavity for containing oil inside, and is provided with an installation port communicated with the oil storage cavity, the installation port is used to fix the oil seal to be tested and the two are sealed and matched; the oil filling port is communicated with the oil storage cavity to fill oil into the oil storage cavity;

[0007] The moving mechanism includes a moving part which is seal-matched with the oil seal to be tested and can move relative to the oil seal to be tested;

[0008] A balancing mechanism, comprising a balancing member provided with a balancing chamber, a first communicating pipe for communicating an upper portion of the balancing chamber with an upper portion of the oil storage chamber, and a second communicating pipe for communicating a lower portion of the balancing chamber with a lower portion of the oil storage chamber;

[0009] and a base, on which the oil seal mounting mechanism, the motion mechanism, and the balancing mechanism are mounted.

[0010] During the test, the tester installs the oil seal to be tested on the installation port of the oil seal installation mechanism, and then makes the moving parts in the moving mechanism seal with the oil seal to be tested and injects oil into the oil storage cavity through the oil injection port; after the oil injection is completed, the moving parts in the moving mechanism move relative to the oil seal to be tested for testing;

[0011] During the test, the oil temperature and other factors may cause the pressure in the oil storage chamber to increase. With the above structure, a loop is formed between the oil storage chamber and the balance chamber. When the pressure in the oil storage chamber increases, the oil in the oil storage chamber leaks into the balance chamber through the first connecting pipe, and the oil in the balance chamber flows back to the oil storage chamber through the second connecting pipe, thereby effectively avoiding inaccurate testing caused by the increase in energy during the operation of the oil seal test device.

[0012] Furthermore, the height of the balancing chamber is higher than the height of the oil storage chamber.

[0013] By adopting the above structure, the pressure in the balance chamber will not rise to its critical point too quickly.

[0014] Specifically, the oil filling port is arranged on the oil seal mounting mechanism and is located at the upper part of the oil seal mounting mechanism.

[0015] Furthermore, the air inlet is communicated with the oil storage chamber to fill the oil storage chamber with gas.

[0016] By adopting the above structure, the tester can inflate the oil storage chamber of the oil seal mounting mechanism through the air inlet to increase the pressure in the oil storage chamber, so that the pressure in the oil storage chamber meets the pressure required for the test; usually, the oil storage chamber is filled to 80% through the oil filling port, and then the oil storage chamber is inflated and pressurized through the air inlet.

[0017] Specifically, the air inlet is arranged on the oil seal mounting mechanism and is located at the upper part of the oil seal mounting mechanism.

[0018] Furthermore, the oil seal installation mechanism and the moving mechanism can approach and move away from each other; when the oil seal installation mechanism and the moving mechanism are in a state of approaching each other, the moving part and the oil seal to be tested are sealed and cooperated; when the oil seal installation mechanism and the moving mechanism are in a state of moving away from each other, the moving part and the oil seal to be tested are separated.

[0019] With the above structure, when the oil seal installation mechanism and the moving mechanism are far away from each other, it is convenient for the tester to install the oil seal to be tested on the oil seal installation mechanism; when the oil seal is installed, the oil seal installation mechanism and the moving mechanism are brought close to each other so that the moving part can cooperate with the oil seal to be tested.

[0020] Furthermore, the oil seal installation mechanism is slidably arranged on the base to approach or move away from the movement mechanism.

[0021] With the above structure, the oil seal installation mechanism can slide toward the moving mechanism to achieve the two moving closer to each other; the oil seal installation mechanism can slide away from the moving mechanism to achieve the two moving away from each other.

[0022] Furthermore, the base is provided with a sliding guide rail for guiding the oil seal mounting mechanism; the mounting plate is provided with a sliding block that slides and matches with the sliding guide rail; the oil seal mounting mechanism is arranged on the mounting plate; the mounting plate is provided with a locking member having a locked state and an unlocked state, and when the locking member is in the locked state, the mounting plate cannot slide relative to the sliding rail; when the locking member is in the unlocked state, the mounting plate can slide relative to the sliding rail.

[0023] With the above structure, after the tester installs the oil seal to be tested on the oil seal installation mechanism, he operates the locking piece to put it in an unlocked state, and the oil seal installation mechanism slides along the sliding guide rail toward the moving mechanism side to make the oil seal to be tested and the moving part sealably cooperate, and the operator then operates the locking piece to put it in a locked state to prevent the oil seal installation mechanism from sliding during the test.

[0024] Furthermore, the sliding blocks are provided with four ones respectively located at the four corners of the mounting plate; and the distance between the mounting plate and the connection between the mounting plate and the sliding blocks and the mounting plate is adjustable.

[0025] By adopting the above structure, the operator can adjust the horizontality of the mounting plate by adjusting the distance between the four corners of the mounting plate and the corresponding slider; specifically, the mounting plate and the slider are connected by a fine-tuning bolt, and the tester adjusts the distance between the two by rotating the fine-tuning bolt.

[0026] Further, the moving part performs rotational motion relative to the oil seal to be tested;

[0027] The motion mechanism includes a power member, a driving wheel, a driven wheel, a belt, and a rotating shaft assembly; the driving wheel is arranged on the output shaft of the power member, the driven wheel is arranged on the rotating main shaft of the rotating shaft assembly, and the belt is wound around the driving wheel and the driven wheel; the moving member is arranged on the rotating main shaft of the rotating shaft assembly and rotates synchronously therewith.

[0028] Specifically, the power component is a motor.

[0029] With the above structure, the output shaft of the power member drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate through the belt. The rotation of the driven wheel drives the rotating main shaft of the rotating shaft assembly to rotate to drive the moving member to rotate.

[0030] The rotating shaft assembly comprises a rotating main shaft and a rotating shaft seat. The rotating main shaft is arranged in the rotating shaft seat and can rotate relative to the rotating shaft seat.

[0031] The base comprises a base plate, the power member is located below the base plate, and the rotating shaft assembly is located above the base plate.

[0032] Furthermore, the oil seal installation mechanism includes an installation body, a first end cover and a second end cover arranged at both ends of the installation body, and an oil seal fixture for installing the oil seal to be tested; the first end cover is provided with an opening for installing the oil seal fixture, and the installation port is arranged on the oil seal fixture; the connection between the first end cover and the installation body is sealed by a sealing ring, and the connection between the second end cover and the installation body is sealed by a sealing ring.

[0033] With the above structure, the installation body, the first end cover, and the second end cover enclose the oil storage cavity; the tester can select the corresponding oil seal fixture according to the type of oil seal.

[0034] Furthermore, the balancing mechanism is provided with a connection switch on the first connecting pipe, and the connection switch is used to control the connection or blocking between the balancing chamber and the oil storage chamber.

[0035] With the above structure, the connection switch can control whether the balance chamber is connected with the oil storage chamber; when the oil seal test device tests an oil seal with a smaller diameter, the oil seal is used in a relatively low pressure environment, and the use temperature is relatively low (below 150 degrees), the tester can operate the connection switch to block the connection between the balance chamber and the oil storage chamber; when the oil seal test device tests an oil seal with a larger diameter, the oil seal is used in a relatively high pressure environment, and the use temperature is relatively high (above 150 degrees), the tester can operate the connection switch to connect the balance chamber with the oil storage chamber; the above structure allows the tester to select the test mode of the oil seal test device according to the different oil seals being tested;

[0036] Specifically, the connection switch adopts a high-pressure ball valve.

[0037] Furthermore, the oil discharge port is communicated with the oil storage chamber to discharge the oil in the oil storage chamber.

[0038] With the above structure, after the test is completed, the operator can discharge the oil in the oil storage cavity through the oil discharge port to facilitate the separation of the oil seal installation mechanism and the motion mechanism and the disassembly of the tested oil seal.

[0039] Specifically, the oil drain port is arranged on the second connecting pipe.

[0040] The balancing member is provided with an overflow pipe communicating with the balancing chamber;

[0041] When the pressure in the balance chamber is higher than its critical point, the oil in the balance chamber is discharged through the overflow pipe.

[0042] The above structure makes the oil seal test device run more reliably and safely. Specifically, one end of the overflow pipe is connected to the upper part of the balance chamber, and the other end is connected to the oil tank.

[0043] Furthermore, the oil seal installation mechanism is provided with a heating element for heating the oil storage cavity.

[0044] With the above structure, the tester can heat the oil in the oil storage chamber by controlling the heating element, so that the oil in the oil storage chamber is heated to the temperature required for the test;

[0045] Specifically, the heating element is arranged at the lower part of the oil seal installation mechanism; the heating element adopts an electric heating tube.

[0046] Furthermore, the oil seal mounting mechanism is also provided with a temperature measuring component for measuring the temperature in the oil storage cavity.

[0047] With the above structure, the setting of the temperature measuring component enables the tester to understand the temperature in the oil storage cavity, which is convenient for subsequent testing.

[0048] Specifically, the temperature measuring component is arranged on the upper part of the oil seal mounting mechanism; the temperature measuring component adopts a temperature measuring rod; the oil seal mounting mechanism is provided with a temperature measuring mounting port matching the temperature measuring component, and the temperature measuring part of the temperature measuring component extends into the oil storage cavity through the temperature measuring mounting port to measure the temperature of the oil storage cavity.

[0049] Furthermore, a heat insulation plate is provided between the rotating main shaft and the power member.

[0050] With the above structure, the provision of the partition plate effectively prevents heat in the oil seal installation mechanism from being transferred to the rotating spindle during the test process.

[0051] Furthermore, the oil seal test device includes an oil sight glass assembly connected to the oil storage chamber.

[0052] By adopting the above structure, the tester can observe the oil level in the oil storage chamber through the oil sight glass assembly; specifically, one end of the oil sight glass assembly is connected to the second connecting pipe.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] (1) The oil seal test device of the present invention realizes internal pressure balance by providing a balancing member that forms a connecting circuit with the oil storage chamber of the oil seal installation mechanism, so that the oil seal test device can adapt to the testing of oil seals with larger diameters, the testing environment with higher pressure, and the testing environment with higher temperature.

[0055] (2) The oil seal test device of the present invention is provided with a connection switch for connecting or blocking the connection between the oil storage chamber and the balance chamber, so that the oil seal test device can adapt to the testing of oil seals with smaller diameters, the testing environment with lower pressure, and the testing environment with lower temperature.

[0056] (3) The oil seal test device of the present invention has a reasonable structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a structural schematic diagram of the oil seal test device of the present invention;

[0058] Figure 2 It is a structural schematic diagram of the oil seal test device of the present invention from another angle;

[0059] Figure numerals: 1 oil seal installation mechanism; 101 installation port; 102 installation body; 103 first end cover; 104 second end cover; 105 oil seal fixture; 2 moving mechanism; 201 moving part; 202 power part; 203 driving wheel; 204 driven wheel; 205 belt; 206 rotating shaft assembly; 207 heat insulation board; 3 balancing mechanism; 301 balancing part; 302 first connecting pipe; 303 second connecting pipe; 304 overflow pipe; 305 connecting switch; 4 base; 5 oil filling port; 6 air inlet; 7 sliding guide rail; 8 slider; 9 mounting plate; 10 locking part; 11 oil drain port; 12 temperature measuring part; 13 fine-tuning bolt; 14 oil sight glass assembly; a measured oil seal. DETAILED DESCRIPTION

[0060] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0061] like Figure 1 As shown in FIG. 2, an oil seal test device comprises:

[0062] The oil seal installation mechanism 1 is provided with an oil storage cavity for containing oil, and is provided with an installation port 101 communicated with the oil storage cavity, the installation port 101 is used to fix the oil seal to be tested and the two are sealed and matched; the oil filling port 5 is communicated with the oil storage cavity to fill oil into the oil storage cavity;

[0063] The moving mechanism 2 comprises a moving part 201 which is in sealing cooperation with the oil seal to be tested and can move relative to the oil seal to be tested;

[0064] The balancing mechanism 3 includes a balancing member provided with a balancing chamber, a first connecting pipe 302 for connecting the upper portion of the balancing chamber with the upper portion of the oil storage chamber, and a second connecting pipe 303 for connecting the lower portion of the balancing chamber with the lower portion of the oil storage chamber;

[0065] and a base 4 , on which the oil seal mounting mechanism 1 , the motion mechanism 2 , and the balancing mechanism 3 are mounted.

[0066] During the test, the tester installs the oil seal to be tested on the installation port 101 of the oil seal installation mechanism 1, and then makes the moving part 201 in the moving mechanism 2 seal with the oil seal to be tested and injects oil into the oil storage cavity through the oil injection port 5; after the oil injection is completed, the moving part 201 in the moving mechanism 2 moves relative to the oil seal to be tested for testing;

[0067] During the test, the oil temperature and other factors may cause the pressure in the oil storage chamber to increase. With the above structure, a loop is formed between the oil storage chamber and the balance chamber. When the pressure in the oil storage chamber increases, the oil in the oil storage chamber flows into the balance chamber through the first connecting pipe 302, and the oil in the balance chamber flows back to the oil storage chamber through the second connecting pipe 303, thereby effectively avoiding inaccurate testing caused by the increase in energy during the operation of the oil seal test device.

[0068] Preferably, the height of the balancing chamber is higher than the height of the oil storage chamber.

[0069] By adopting the above structure, the pressure in the balance chamber will not rise to its critical point too quickly.

[0070] Specifically, the oil filling port 5 is arranged on the oil seal mounting mechanism 1 and is located at the upper part of the oil seal mounting mechanism 1 .

[0071] Preferably, the air inlet 6 is communicated with the oil storage chamber to fill the oil storage chamber with gas.

[0072] By adopting the above structure, the tester can inflate the oil storage chamber of the oil seal mounting mechanism 1 through the air inlet 6 to increase the pressure in the oil storage chamber, so that the pressure in the oil storage chamber meets the pressure required for the test; usually, the oil storage chamber is filled to 80% through the oil filling port 5, and then the oil storage chamber is inflated and pressurized through the air inlet 6.

[0073] Specifically, the air inlet 6 is provided on the oil seal mounting mechanism 1 and is located at the upper portion of the oil seal mounting mechanism 1 .

[0074] Preferably, the oil seal installation mechanism 1 and the moving mechanism 2 can approach and move away from each other; when the oil seal installation mechanism 1 and the moving mechanism 2 are in a state of approaching each other, the moving part 201 is sealed with the oil seal to be measured; when the oil seal installation mechanism 1 and the moving mechanism 2 are in a state of moving away from each other, the moving part 201 is separated from the oil seal to be measured.

[0075] With the above structure, when the oil seal installation mechanism 1 and the moving mechanism 2 are far away from each other, it is convenient for the tester to install the oil seal to be tested on the oil seal installation mechanism 1; when the oil seal is installed, the oil seal installation mechanism 1 and the moving mechanism 2 are brought close to each other so that the moving part 201 can cooperate with the oil seal to be tested.

[0076] Preferably, the oil seal mounting mechanism 1 is slidably disposed on the base 4 to move closer to or further away from the moving mechanism 2 .

[0077] With the above structure, the oil seal installation mechanism 1 can slide toward the moving mechanism 2 to achieve the two moving closer to each other; the oil seal installation mechanism 1 can slide away from the moving mechanism 2 to achieve the two moving away from each other.

[0078] Preferably, the base 4 is provided with a sliding guide rail 7 for guiding the oil seal mounting mechanism 1; the mounting plate 9 is provided with a slider 8 that slides and matches with the sliding guide rail 7; the oil seal mounting mechanism 1 is arranged on the mounting plate 9; the mounting plate 9 is provided with a locking member 10 having a locked state and an unlocked state, and when the locking member 10 is in the locked state, the mounting plate 9 cannot slide relative to the sliding rail; when the locking member 10 is in the unlocked state, the mounting plate 9 can slide relative to the sliding rail.

[0079] With the above structure, after the tester installs the oil seal to be tested on the oil seal installation mechanism 1, he operates the locking member 10 to put it in an unlocked state, and the oil seal installation mechanism 1 slides along the sliding guide rail 7 toward the moving mechanism 2 to make the oil seal to be tested and the moving member 201 sealably cooperate, and the operator then operates the locking member 10 to put it in a locked state to prevent the oil seal installation mechanism 1 from sliding during the test.

[0080] Preferably, the sliding blocks 8 are provided with four blocks respectively located at the four corners of the mounting plate 9; and the distance between the mounting plate 9 and the connection between the sliding blocks 8 and the mounting plate 9 is adjustable.

[0081] With the above structure, the operator can adjust the horizontal position of the mounting plate 9 by adjusting the distance between the four corners of the mounting plate 9 and the corresponding slider 8; specifically, the mounting plate 9 and the slider 8 are connected by a fine-tuning bolt 13, and the tester adjusts the distance between the two by rotating the fine-tuning bolt 13.

[0082] Preferably, the moving part 201 performs rotational motion relative to the oil seal being tested;

[0083] The motion mechanism 2 includes a power member 202, a driving wheel 203, a driven wheel 204, a belt 205, and a rotating shaft assembly 206; the driving wheel 203 is arranged on the output shaft of the power member 202, the driven wheel 204 is arranged on the rotating main shaft of the rotating shaft assembly 206, and the belt 205 is wound around the driving wheel 203 and the driven wheel 204; the motion member 201 is arranged on the rotating main shaft of the rotating shaft assembly 206 and rotates synchronously therewith.

[0084] Specifically, the power component 202 is a motor.

[0085] With the above structure, the output shaft of the power member 202 drives the driving wheel 203 to rotate, and the driving wheel 203 drives the driven wheel 204 to rotate through the belt 205. The rotation of the driven wheel 204 drives the rotating main shaft of the rotating shaft assembly 206 to rotate to drive the moving member 201 to rotate.

[0086] The rotating shaft assembly 206 includes a rotating main shaft and a rotating shaft seat. The rotating main shaft is disposed in the rotating shaft seat and can rotate relative to the rotating shaft seat.

[0087] The base 4 includes a base plate, the power member 202 is located below the base plate, and the rotating shaft assembly 206 is located above the base plate.

[0088] Preferably, the oil seal installation mechanism 1 includes an installation body 102, a first end cover 103 and a second end cover 104 arranged at both ends of the installation body 102, and an oil seal fixture 105 for installing the oil seal to be tested; the first end cover 103 is provided with an opening for installing the oil seal fixture 105, and the installation port 101 is provided on the oil seal fixture 105; the connection between the first end cover 103 and the installation body 102 is sealed by a sealing ring, and the connection between the second end cover 104 and the installation body 102 is sealed by a sealing ring.

[0089] With the above structure, the installation body 102, the first end cover 103, and the second end cover 104 enclose the oil storage cavity; the tester can select the corresponding oil seal fixture 105 according to the type of oil seal.

[0090] Preferably, the balancing mechanism 3 is provided with a connection switch 305 on the first connecting pipe 302 , and the connection switch 305 is used to control the connection or blocking between the balancing chamber and the oil storage chamber.

[0091] With the above structure, the connection switch 305 can control whether the balance chamber is connected with the oil storage chamber; when the oil seal test device tests an oil seal with a smaller diameter, the oil seal is used in a relatively low pressure environment, and the use temperature is 150 degrees or lower, the tester can operate the connection switch 305 to block the connection between the balance chamber and the oil storage chamber; when the oil seal test device tests an oil seal with a larger diameter, the oil seal is used in a relatively high pressure environment, and the use temperature is 150 degrees or higher, the tester can operate the connection switch 305 to connect the balance chamber with the oil storage chamber; the above structure allows the tester to select the test mode of the oil seal test device according to the different oil seals being tested;

[0092] Specifically, the connection switch 305 adopts a high-pressure ball valve.

[0093] Preferably, the oil discharge port 11 is communicated with the oil storage chamber to discharge the oil in the oil storage chamber.

[0094] With the above structure, after the test is completed, the operator can discharge the oil in the oil storage chamber through the oil discharge port 11 to facilitate the separation of the oil seal installation mechanism 1 and the motion mechanism 2 and the disassembly of the tested oil seal.

[0095] Specifically, the oil discharge port 11 is disposed on the second connecting pipe 303 .

[0096] The balance member is provided with an overflow pipe 304 communicating with the balance chamber;

[0097] When the pressure in the balance chamber is higher than its critical point, the oil in the balance chamber is discharged through the overflow pipe 304 .

[0098] The above structure makes the oil seal test device run more reliably and safely. Specifically, one end of the overflow pipe 304 is connected to the upper part of the balance chamber, and the other end is connected to the oil tank.

[0099] Preferably, the oil seal installation mechanism 1 is provided with a heating element for heating the oil storage cavity.

[0100] With the above structure, the tester can heat the oil in the oil storage chamber by controlling the heating element, so that the oil in the oil storage chamber is heated to the temperature required for the test;

[0101] Specifically, the heating element is arranged at the lower part of the oil seal installation mechanism 1; the heating element adopts an electric heating tube.

[0102] Preferably, the oil seal mounting mechanism 1 is also provided with a temperature measuring element 12 for measuring the temperature in the oil storage cavity.

[0103] With the above structure, the setting of the temperature measuring element 12 enables the tester to understand the temperature in the oil storage cavity, which is convenient for subsequent testing.

[0104] Specifically, the temperature measuring component 12 is arranged on the upper part of the oil seal mounting mechanism 1; the temperature measuring component 12 adopts a temperature measuring rod; the oil seal mounting mechanism 1 is provided with a temperature measuring mounting port 101 matching the temperature measuring component 12, and the temperature measuring part of the temperature measuring component 12 extends into the oil storage cavity through the temperature measuring mounting port 101 to measure the temperature of the oil storage cavity.

[0105] Preferably, a heat insulation plate 207 is provided between the rotating main shaft and the power member 202 .

[0106] With the above structure, the provision of the partition plate effectively prevents the heat in the oil seal installation mechanism 1 from being transferred to the rotating spindle during the test process.

[0107] Preferably, the oil seal test device includes an oil sight glass assembly 14 connected to the oil storage chamber.

[0108] With the above structure, the tester can observe the oil level in the oil storage chamber through the oil sight glass assembly 14 ; specifically, one end of the oil sight glass assembly 14 is connected to the second connecting pipe 303 .

[0109] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An oil seal test device, characterized in that: include: An oil seal installation mechanism (1) is provided with an oil storage cavity for containing oil inside, and is provided with an installation port (101) connected to the oil storage cavity, the installation port (101) is used to fix the oil seal to be tested, and the two are sealed and matched; an oil filling port (5) is connected to the oil storage cavity to fill oil into the oil storage cavity; A moving mechanism (2), comprising a moving part (201) that cooperates with the oil seal to be tested and can move relative to the oil seal to be tested; A balancing mechanism (3), comprising a balancing member provided with a balancing chamber, a first connecting pipe (302) for connecting an upper portion of the balancing chamber with an upper portion of the oil storage chamber, and a second connecting pipe (303) for connecting a lower portion of the balancing chamber with a lower portion of the oil storage chamber, so as to achieve internal pressure balance; when the pressure in the oil storage chamber increases, the oil in the oil storage chamber is discharged into the balancing chamber through the first connecting pipe (302), and the oil in the balancing chamber is returned to the oil storage chamber through the second connecting pipe (303); and a base (4), wherein the oil seal mounting mechanism (1), the motion mechanism (2), and the balancing mechanism (3) are mounted on the base (4).

2. The oil seal test device according to claim 1, characterized in that: The air inlet (6) is communicated with the oil storage chamber so as to fill the oil storage chamber with gas.

3. The oil seal test device according to claim 1, characterized in that: The oil seal installation mechanism (1) and the moving mechanism (2) can move closer to each other or further away from each other; when the oil seal installation mechanism (1) and the moving mechanism (2) are in a state of moving closer to each other, the moving part (201) and the oil seal to be tested are in sealing cooperation; when the oil seal installation mechanism (1) and the moving mechanism (2) are in a state of moving further away from each other, the moving part (201) and the oil seal to be tested are separated; The oil seal installation mechanism (1) is slidably arranged on the base (4) to approach or move away from the moving mechanism (2); a sliding guide rail (7) for guiding the oil seal installation mechanism (1) is arranged on the base (4); a sliding block (8) slidably matched with the sliding guide rail (7) is arranged on the installation plate (9); a locking member (10) having a locked state and an unlocked state is arranged on the installation plate (9); when the locking member (10) is in the locked state, the installation plate (9) cannot slide relative to the sliding track; when the locking member (10) is in the unlocked state, the installation plate (9) can slide relative to the sliding track.

4. The oil seal test device according to claim 1, characterized in that: The moving part (201) performs rotational motion relative to the oil seal to be tested; The motion mechanism (2) comprises a power member (202), a driving wheel (203), a driven wheel (204), a belt (205), and a rotating shaft assembly (206); the driving wheel (203) is arranged on the output shaft of the power member (202), the driven wheel (204) is arranged on the rotating main shaft of the rotating shaft assembly (206), and the belt (205) is wound around the driving wheel (203) and the driven wheel (204); the motion member (201) is arranged on the rotating main shaft of the rotating shaft assembly (206) and rotates synchronously therewith.

5. The oil seal test device according to claim 1, characterized in that: The oil seal installation mechanism (1) comprises an installation body (102), a first end cover (103) and a second end cover (104) arranged at both ends of the installation body (102), and an oil seal fixture (105) for installing the oil seal to be tested; the first end cover (103) is provided with an opening for installing the oil seal fixture (105), and the installation opening (101) is arranged on the oil seal fixture (105); the connection between the first end cover (103) and the installation body (102) is sealed by a sealing ring, and the connection between the second end cover (104) and the installation body (102) is sealed by a sealing ring.

6. The oil seal test device according to claim 1, characterized in that: The balancing mechanism (3) is provided with a connection switch (305) on the first connecting pipe (302), and the connection switch (305) is used to control the connection or blocking between the balancing chamber and the oil storage chamber.

7. The oil seal test device according to claim 1, characterized in that: The oil discharge port (11) is communicated with the oil storage chamber to discharge the oil in the oil storage chamber.

8. The oil seal test device according to claim 1, characterized in that: The balancing member is provided with an overflow pipe (304) communicating with the balancing chamber; When the pressure in the balance chamber is higher than its critical point, the oil in the balance chamber is discharged through the overflow pipe (304).

9. The oil seal test device according to claim 1, characterized in that: The oil seal installation mechanism (1) is provided with a heating element for heating the oil storage cavity; The oil seal installation mechanism (1) is also provided with a temperature measuring component (12) for measuring the temperature in the oil storage cavity.

10. The oil seal test device according to claim 4, characterized in that: A heat insulation plate (207) is provided between the rotating main shaft and the power member (202).

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