CN210465153U - Framework oil seal pressure-resistant test device of reciprocating motion type hydraulic shock absorber - Google Patents
Framework oil seal pressure-resistant test device of reciprocating motion type hydraulic shock absorber Download PDFInfo
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- CN210465153U CN210465153U CN201921470522.2U CN201921470522U CN210465153U CN 210465153 U CN210465153 U CN 210465153U CN 201921470522 U CN201921470522 U CN 201921470522U CN 210465153 U CN210465153 U CN 210465153U
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Abstract
Reciprocating motion formula hydraulic shock absorber's skeleton oil blanket withstand voltage test device, including the box that is full of fluid, its characterized in that still includes the gasbag of inflatable and can follow the vertical piston rod guiding motion subassembly that carries out reciprocating motion, the gasbag setting in the box, and the one-way inflation valve of gasbag connects the gas tube, the gas tube stretches out from the box, sets up the oil extraction valve that is used for fluid exhaust and the oiling valve that is used for pouring into fluid on the box, piston rod guiding motion subassembly dress is in the box, one end stretch out from the box and through the skeleton oil blanket sealed between with the box. The utility model discloses the structure is simpler, and manufacturing cost is lower with the use maintenance cost, moreover because of the gasbag inside and outside pressure constantly everywhere equal, difficult damaged, can prolong test device's life greatly to improve test device's use reliability and security.
Description
Technical Field
The utility model relates to a reciprocating motion formula hydraulic shock absorber's skeleton oil blanket pressure test device for the withstand voltage detection of skeleton oil blanket.
Background
Conventional "pump" systems wear and fail during long-term use, require frequent maintenance, are relatively complex in structure, and have many points of failure. In addition, the conventional pump pressure system and the water tank without the air bag expand in volume after water is solidified into ice at the temperature of 0 ℃ so that the tank body is cracked frequently. The inflatable air bag is arranged in the closed container filled with water or oil and other aqueous media, the pressure of the air in the air bag is equal to the pressure of the aqueous media outside the air bag at all places after the air bag is inflated, and thus the thin rubber sealed air bag can bear large pressure and cannot be broken. After the sealed rubber air bag is filled with air with a certain pressure, the water medium in the sealed container has the same pressure as the air pressure in the air bag, and can replace the conventional pump to supply water and pressurize, and simultaneously, an overflow valve and a safety valve of a pump pressure system are not needed. There are not many examples of prior art water supplies that add water by placing a bladder in a closed container with an aqueous medium instead of a conventional "pump".
A test device for the pressure-resistant life of a framework oil seal on a reciprocating hydraulic shock absorber of a railway rolling stock or an automobile requires that when a piston rod sequence 10 reciprocates at different speeds and frequencies, oil pressure of 0.3 Mpa-1 Mpa is added to a sealing lip of a test framework oil seal sequence 12, and the pressure-resistant life of the framework oil seal when the piston rod moves at different speeds, frequencies and oil pressures is detected. The closed box body is a cylindrical hollow box body, and oil is filled in the closed box body in the sequence 1 all the time in the test process. In the prior art, an oil pump is generally adopted to pressurize oil in a box body, and then an overflow valve and a safety valve are used for ensuring the oil pressure required by the test. However, even if the best quality oil pump, relief valve and safety valve are opened and closed frequently, they will fail due to wear or other failures after 2 years of operation, and need to be replaced with new ones.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reciprocating motion formula hydraulic shock absorber's skeleton oil blanket pressure test device, the structure is simpler, and manufacturing cost is lower with the use maintenance cost, and because of the gasbag inside and outside pressure constantly everywhere equals, difficult damaged, can prolong test device's life greatly to improve test device's use reliability and security.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
reciprocating motion formula hydraulic shock absorber's skeleton oil blanket withstand voltage test device, including the box that is full of fluid, its characterized in that still includes the gasbag of inflatable and can follow the vertical piston rod guiding motion subassembly that carries out reciprocating motion, the gasbag setting in the box, and the one-way inflation valve of gasbag connects the gas tube, the gas tube stretches out from the box, sets up the oil extraction valve that is used for fluid exhaust and the oiling valve that is used for pouring into fluid on the box, piston rod guiding motion subassembly dress is in the box, one end stretch out from the box and through the skeleton oil blanket sealed between with the box.
Preferably, the piston rod guiding movement assembly comprises a lower guiding support seat fixed in the box body along the vertical direction and a piston rod stretching into the lower guiding support seat in a guiding matching manner, the lower end of the piston rod stretches into the lower guiding support seat, and the upper end of the piston rod penetrates out of the box body.
Preferably, a through hole for the piston rod to penetrate through is formed in a top plate of the box body, an upper guide support ring matched with the piston rod in a guide mode is installed on the inner wall of the through hole, a first annular groove used for containing a framework oil seal is formed in the inner wall of the through hole, the framework oil seal is packaged on the piston rod and is arranged in the first annular groove, and an oil passing channel communicated with the inner cavity of the box body and the first annular groove is formed in the top plate of the box body.
Preferably, the side wall of the through hole is provided with a second annular groove, the piston rod is sleeved with a dust ring, the dust ring is arranged in the second annular groove, and the dust ring is coaxially arranged on the outer side of the framework oil seal.
Preferably, the number of the air bags is multiple, the one-way inflation valves of the air bags are respectively connected with the inflation tube, the bottoms of the air bags are in contact with the box body, the tops of the air bags are positioned through the air bag fixing support plate, and the one-way inflation valves penetrate through the air bag fixing support plate and are connected with the inflation tube.
Preferably, the airbag fixing support plate is horizontally arranged and is rectangular, and the distance between the edge of the airbag fixing support plate and the inner wall of the box body is 2-3 mm.
Preferably, the air bag is a bellows-shaped nitrile rubber air bag, and the air bag fixing support plate is a nitrile rubber plate with the thickness of 3-4 mm.
Preferably, the oil discharge valve is close to the bottom of the water tank, the oil filling valve is located at the top of the water tank, and a pressure gauge for monitoring the pressure of liquid in the water tank is installed at the top of the water tank.
The utility model has the advantages that:
1. the utility model discloses a skeleton oil blanket withstand voltage test device of reciprocating motion formula hydraulic shock absorber, be full of fluid in the box, the gasbag is packed into in the box, can fill gas in to the gasbag according to the user demand, because the incompressibility of fluid, the volume of gasbag can not expand basically when aerifing, the inside and outside pressure everywhere of gasbag equals, piston rod guiding motion subassembly is along vertical reciprocating motion when test device during operation, when piston rod guiding motion subassembly inwards impressed motion from the installation initial position, the gasbag volume compression, the volume of compression is equivalent to the volume that piston rod guiding motion subassembly impressed; when the piston rod guiding motion assembly extends outwards from the installation initial position, the air bag expands in volume, the expanded volume is equal to the volume of the piston rod guiding motion assembly, the pressure borne by the framework oil seal changes along with the reciprocating motion of the piston rod guiding motion assembly, the pressure-resistant life of the framework oil seal when the piston rod guiding motion assembly moves under different speeds, frequencies and oil pressures is detected, compared with a test device which adopts an oil pump to pressurize oil in a box body and then ensures the oil pressure required by the test by an overflow valve and a safety valve in the prior art, the test device does not need to use a pump body, the overflow valve and the safety valve, the structure is simpler, the manufacturing cost and the use and maintenance cost are lower, and because the internal and external pressure of the air bag are equal everywhere at any moment, the air bag is not easy to damage, the air bag can effectively work for more than 10 years, the service life of the test device is greatly prolonged, and the use reliability and the safety of the test device are improved.
2. The gasbag is fixed a position with the fixed extension board of gasbag, fix a position the position of gasbag in the box to be connected with the one-way inflation valve of gasbag through the gas tube, one-way inflation valve is opened during aerifing, one-way inflation valve self-closing when stopping aerifing guarantees effectively pressurizing the gasbag, at box top installation manometer, detect the pressure in the box at the gas filled in-process, stop promptly after reaching required pressure and aerify the gasbag, convenient and practical also can realize the real-time supervision to box internal pressure in the use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Detailed Description
The embodiments of the present invention will be described in detail with reference to fig. 1 to 2.
Reciprocating motion formula hydraulic shock absorber's skeleton oil blanket pressure test device, including the box 1 that is full of fluid, its characterized in that still includes inflatable gasbag 2 and can follow vertical reciprocating motion's piston rod guiding movement subassembly 3 that carries on, gasbag 2 set up in box 1, and the one-way inflation valve 21 of gasbag 2 connects gas tube 4, and gas tube 4 stretches out from box 1, sets up the oil extraction valve 11 that is used for fluid exhaust and the oiling valve 12 that is used for pouring into fluid on the box 1, piston rod guiding movement subassembly 3 dress is in box 1, one end stretch out from box 1 and sealed through skeleton oil blanket 5 between 1.
As shown in the figure, the framework oil seal pressure resistance test device of the reciprocating motion type hydraulic shock absorber is characterized in that a box body 1 is filled with oil, an air bag 2 is arranged in the box body 1, and gas can be filled into the air bag 2 according to use requirements, due to incompressibility of the oil, the volume of the air bag 2 basically cannot expand during inflation, the internal pressure and the external pressure of the air bag are equal everywhere, and a piston rod guide motion assembly 3 vertically reciprocates when the test device works. When the piston rod guide motion assembly 3 is pressed inwards from the installation initial position, the air bag 2 is compressed in volume, and the compressed volume is equivalent to the pressed volume of the piston rod guide motion assembly 3; when the piston rod guiding motion assembly 3 extends outwards from the initial installation position, the air bag 2 expands in volume, the expanded volume is equivalent to the volume of the piston rod guiding motion assembly 3 extending, the pressure borne by the framework oil seal 5 changes along with the reciprocating motion of the piston rod guiding motion assembly 3, and the pressure-resistant life of the framework oil seal when the piston rod guiding motion assembly 3 moves under different speeds, frequencies and oil pressures is detected, compared with a test device which adopts an oil pump to pressurize oil in a box body and then ensures the oil pressure required by the test by an overflow valve and a safety valve in the prior art, a pump body, an overflow valve and a safety valve are not needed, the structure is simpler, the manufacturing cost and the use and maintenance cost are lower, and the service life of the test device is greatly prolonged as the internal pressure and the external pressure of the air bag 2 are equal everywhere and are not easy to damage, the test device, and the use reliability and the safety of the test device are improved.
The piston rod guiding movement assembly 3 comprises a lower guiding support seat 31 fixed in the box body 1 along the vertical direction and a piston rod 32 stretching into the lower guiding support seat 31 in a guiding matching manner, the lower end of the piston rod 32 stretches into the lower guiding support seat 31, and the upper end of the piston rod penetrates out of the box body 1. The piston rod 32 is used for realizing reciprocating motion, the lower guide supporting seat 31 guides the motion of the piston rod, the motion of the piston rod is the same as that of the piston rod in the reciprocating motion type hydraulic shock absorber, and the test is real and effective.
The oil seal structure comprises a box body 1, a through hole 13 is formed in a top plate of the box body 1, the through hole 13 is used for a piston rod 32 to penetrate through, an upper guide support ring 13.1 which is matched with the piston rod 32 in a guide mode is installed on the inner wall of the through hole 13, a first annular groove 14 used for containing a framework oil seal 5 is formed in the inner wall of the through hole 13, the framework oil seal 5 is sleeved on the piston rod 32 and is arranged in the first annular groove 14, and an oil passing channel 15 communicated with an inner cavity of the box body 1 and the first annular groove 14 is. The sealing and guiding structure between the box body 1 and the piston phase 32 is the same as the sealing and guiding structure between the piston rod and the oil cylinder in the reciprocating motion type hydraulic shock absorber, the test and detection of the pressure-resistant service life of the framework oil seal are realized, and the test reliability is high, and the test is real and reliable.
The side wall of the through hole 13 is provided with a second annular groove 16, the piston rod 32 is sleeved with a dustproof ring 6, the dustproof ring 6 is arranged in the second annular groove 16, the dustproof ring 6 is coaxially arranged on the outer side of the framework oil seal 5, and the framework oil seal 5 is dustproof through the dustproof ring 6.
The number of the air bags 2 is multiple, the one-way inflation valves 21 of the air bags 2 are respectively connected with the inflation tubes 4, the bottoms of the air bags 2 are in contact with the box body 1, the tops of the air bags are positioned through the air bag fixing support plate 7, and the one-way inflation valves 21 penetrate through the air bag fixing support plate 7 and are connected with the inflation tubes 4. The number of the air bags 2 can be one or more, the air bags are adjusted according to test requirements, the air bag fixing support plate 7 is used for positioning the air bags 2, the one-way inflation valves 21 of the air bags 2 are connected to the inflation tube 4 conveniently, the one-way inflation valves are opened during inflation, the one-way inflation valves are automatically closed during stopping inflation, and effective pressurization of the air bags is guaranteed.
The airbag fixing support plate 7 is horizontally arranged and is rectangular, the distance between the edge of the airbag fixing support plate 7 and the inner wall of the box body 1 is 2-3 mm, the airbag fixing support plate 7 is convenient to put into the box body 1, the horizontal displacement in the box body 1 is small, and the position of the airbag 2 in the box body 1 is convenient to position.
The air bag 2 is a nitrile rubber air bag in a corrugated pipe shape, the air bag in the corrugated pipe shape has good pressure maintaining performance, the air bag is soaked in oil for a long time, the service life is long, the air bag fixing support plate 7 is a nitrile rubber plate with the thickness of 3-4 mm, and the air bag fixing support plate 7 is soaked in the oil for a long time and is not easy to deform or damage.
Wherein, oil drain valve 11 be close to water tank 1's bottom, oiling valve 12 is located water tank 1's top, 1 top installation of water tank is used for monitoring 1 interior liquid pressure's of water tank manometer 8, detects the pressure in the box 1 at the gas filled in-process, stops promptly to inflate gasbag 2 after reaching required pressure, convenient and practical also can realize the real-time supervision to box internal pressure in the use.
The technical solutions of the embodiments of the present invention are completely described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (8)
1. Reciprocating motion formula hydraulic shock absorber's skeleton oil blanket pressure test device, including box (1) that is full of fluid, its characterized in that still includes inflatable gasbag (2) and can follow vertical piston rod guiding motion subassembly (3) that carry out reciprocating motion, gasbag (2) set up in box (1), and gas tube (4) are connected in one-way gas charging valve (21) of gasbag (2), gas tube (4) stretch out from box (1), set up on box (1) and be used for fluid exhaust oil drain valve (11) and be used for pouring into oiling valve (12) of fluid into, piston rod guiding motion subassembly (3) dress is in box (1), one end stretch out from box (1) and through skeleton oil blanket (5) sealed between with box (1).
2. The framework oil seal pressure test device of the reciprocating motion type hydraulic shock absorber as claimed in claim 1, wherein the piston rod guiding motion assembly (3) comprises a lower guiding support seat (31) fixed in the box body (1) along the vertical direction and a piston rod (32) extending into the lower guiding support seat (31) in a guiding fit manner, the lower end of the piston rod (32) extends into the lower guiding support seat (31), and the upper end of the piston rod penetrates out of the box body (1).
3. The framework oil seal pressure resistance test device of the reciprocating motion type hydraulic shock absorber as claimed in claim 2, wherein a top plate of the box body (1) is provided with a through hole (13) through which the piston rod (32) penetrates, an upper guide support ring (13.1) which is matched with the piston rod (32) in a guide way is mounted on the inner wall of the through hole (13), the inner wall of the through hole (13) is provided with a first annular groove (14) for accommodating the framework oil seal (5), the framework oil seal (5) is sleeved on the piston rod (32) and is arranged in the first annular groove (14), and an oil passage (15) for communicating the inner cavity of the box body (1) with the first annular groove (14) is formed in the top plate of the box body (1).
4. The framework oil seal pressure test device of the reciprocating motion type hydraulic shock absorber as claimed in claim 3, wherein the side wall of the through hole (13) is provided with a second annular groove (16), the piston rod (32) is sleeved with the dust ring (6), the dust ring (6) is arranged in the second annular groove (16), and the dust ring (6) is coaxially arranged outside the framework oil seal (5).
5. The framework oil seal pressure resistance test device of the reciprocating motion type hydraulic shock absorber as claimed in claim 1, wherein the number of the air bags (2) is multiple, the one-way inflation valves (21) of the multiple air bags (2) are respectively connected with the inflation tube (4), the bottom of the air bag (2) is in contact with the box body (1), the top of the air bag is positioned by the air bag fixing support plate (7), and the one-way inflation valves (21) penetrate through the air bag fixing support plate (7) and are connected with the inflation tube (4).
6. The framework oil seal pressure test device of the reciprocating motion type hydraulic shock absorber as claimed in claim 5, wherein the air bag fixing support plate (7) is horizontally arranged and is rectangular, and the distance between the edge of the air bag fixing support plate (7) and the inner wall of the box body (1) is 2-3 mm.
7. The framework oil seal pressure test device of the reciprocating hydraulic shock absorber as claimed in claim 6, wherein the air bag (2) is a bellows-shaped nitrile rubber air bag, and the air bag fixing support plate (7) is a nitrile rubber plate with a thickness of 3 mm-4 mm.
8. The framework oil seal pressure test device of the reciprocating motion type hydraulic shock absorber as claimed in claim 1, wherein the oil discharge valve (11) is close to the bottom of the box body (1), the oil injection valve (12) is located at the top of the box body (1), and a pressure gauge (8) for monitoring the liquid pressure in the box body (1) is installed at the top of the box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470522.2U CN210465153U (en) | 2019-09-05 | 2019-09-05 | Framework oil seal pressure-resistant test device of reciprocating motion type hydraulic shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921470522.2U CN210465153U (en) | 2019-09-05 | 2019-09-05 | Framework oil seal pressure-resistant test device of reciprocating motion type hydraulic shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN210465153U true CN210465153U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921470522.2U Expired - Fee Related CN210465153U (en) | 2019-09-05 | 2019-09-05 | Framework oil seal pressure-resistant test device of reciprocating motion type hydraulic shock absorber |
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| CN (1) | CN210465153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839888A (en) * | 2022-07-27 | 2023-03-24 | 扬州福克斯减震器有限公司 | Spring valve system shock absorber reliability selective examination device |
-
2019
- 2019-09-05 CN CN201921470522.2U patent/CN210465153U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839888A (en) * | 2022-07-27 | 2023-03-24 | 扬州福克斯减震器有限公司 | Spring valve system shock absorber reliability selective examination device |
| CN115839888B (en) * | 2022-07-27 | 2023-12-12 | 扬州福克斯减震器有限公司 | Spring valve system shock absorber reliability selective inspection device |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |