CN212803827U - Anti-leakage hydraulic oil cylinder - Google Patents
Anti-leakage hydraulic oil cylinder Download PDFInfo
- Publication number
- CN212803827U CN212803827U CN202021603263.9U CN202021603263U CN212803827U CN 212803827 U CN212803827 U CN 212803827U CN 202021603263 U CN202021603263 U CN 202021603263U CN 212803827 U CN212803827 U CN 212803827U
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- Prior art keywords
- cylinder
- wall
- piston
- rear end
- cylinder barrel
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims abstract description 62
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 241000220317 Rosa Species 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 239000000428 dust Substances 0.000 claims 2
- 239000012535 impurity Substances 0.000 abstract description 14
- 238000005299 abrasion Methods 0.000 abstract description 9
- 238000003466 welding Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a prevent leaking hydraulic cylinder, including the cylinder, the cylinder bottom is provided with the rear end cap, and the cylinder top is connected with the front end housing through fixing bolt, and the inside piston that is provided with of cylinder, piston welding have a piston rod, the piston outer wall is provided with the sealing washer, and the welding of cylinder one side has the rose box, and rose box inner wall sliding connection has the filter screen, and the rose box is installed into oil pipe, and it is provided with one-way inlet valve to advance oil pipe, and the oil pipe is installed back to the rear end cap, returns the. In the utility model, the filter box filters the oil, filters impurities, prevents the impurities from wearing the inner wall of the cylinder barrel, blocks the pipeline, influences the use of the oil cylinder, and the observation window can observe the state of the filter screen; compared with a welded hydraulic oil cylinder, the device is more convenient to detach and maintain, has small damage to the hydraulic oil cylinder, prolongs the service life, reduces the maintenance cost, reduces the abrasion of the piston and the cylinder barrel by the sealing ring, and reduces the abrasion degree of the piston and the front end cover by the protective ring.
Description
Technical Field
The utility model relates to a hydraulic cylinder technical field especially relates to a prevent leaking hydraulic cylinder.
Background
Along with the progress of the industrial production level and the improvement of industrial instruments, the hydraulic cylinder is reasonable in structure, convenient to operate, flexible, good in stability, high in safety and the like, and is widely applied to an excavating device and a feeding device, the oil inlet pipe and the oil return pipe of the existing hydraulic cylinder are not provided with a filtering device to filter oil, impurities in the oil gradually abrade the inner wall of a cylinder barrel in the working process of the oil cylinder, the oil cylinder is led to leak oil, the oil is recycled, more and more impurities are accumulated, the oil return pipe and the overflow pipe are easily blocked, the sealing element is damaged, the load is overlarge, the normal work of the oil cylinder is influenced, the leakage is caused, the existing oil cylinder is generally welded, when the oil cylinder breaks down and needs to be maintained, the disassembly is troublesome, the time is wasted, the working efficiency is seriously influenced, the sealing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a leakage-proof hydraulic oil cylinder.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a leakage-proof hydraulic oil cylinder comprises a cylinder barrel, wherein a rear end cover is arranged at the bottom of the cylinder barrel, the cylinder barrel is connected with the rear end cover through a fixing bolt, the top of the cylinder barrel is connected with a front end cover through a fixing bolt, sealing gaskets are arranged between the contact surfaces of the cylinder barrel and the rear end cover as well as between the cylinder barrel and the front end cover, a piston is arranged in the cylinder barrel, a groove is formed in a new position in the piston, a piston rod is welded at the bottom of the groove, a protective ring is welded on the inner wall of the groove, a sealing ring is arranged on the outer wall of the piston and is in sliding connection with the inner wall of the cylinder barrel, a filter box is welded on one side of the cylinder barrel and is connected with a box cover through a bolt, a sealing gasket is arranged between the filter box and the box cover, a mounting hole is formed in the center, and the mounting hole installs the inlet tube, inside the inlet tube runs through the rear end cap and gets into the cylinder, and the inlet tube was provided with one-way inlet valve, the rear end cap is opened there is the mounting hole, and the mounting hole installs the oil return pipe that accesss to the cylinder outside, and the oil return pipe is provided with one-way oil return valve, the rose box is opened there is the observation window.
Preferably, the inner wall of the filter box is provided with a sliding chute, the sliding chute is arranged along the sliding direction of the filter screen, and the length of the sliding chute is smaller than that of the inner wall of the filter box.
Preferably, the outer wall welding of filter screen both sides has the slider, and slider and spout inner wall sliding connection, and slider length is less than the spout degree of depth.
Preferably, the outer wall of the front end cover is provided with a dustproof ring, and the diameter of the dustproof ring is matched with that of the piston rod.
Preferably, the diameter of the protection ring is matched with that of the piston rod, and the height of the protection ring is larger than that of the groove.
Preferably, the cylinder barrel, the rear end cover and the front end cover are all provided with threaded holes matched with the fixing bolts, and the length of the fixing bolts is larger than that of the front end cover due to the thickness of the rear end cover.
The utility model has the advantages that:
1. in the utility model, the filter box filters the oil entering the oil inlet pipe, and filters the impurities contained in the oil, thereby avoiding the impurities from wearing the inner wall of the cylinder barrel, preventing the oil cylinder from leaking due to the blockage of the pipeline, and enabling the observation window to observe the state of the filter screen, thereby facilitating the replacement of the filter screen;
2. the utility model discloses a fixing bolt is connected with sealed the pad, compares in welded hydraulic cylinder, dismantles and maintains convenient more in a flexible way, and is little to hydraulic cylinder's damage, is favorable to prolonging hydro-cylinder life, reduces cost of maintenance, and the sealing washer of piston setting reduces the wearing and tearing of piston and cylinder inner wall, and the guard ring prevents that the piston from directly contacting with the front end housing, reduces the degree of wear of piston and front end housing, prevents that the hydro-cylinder from taking place the seepage, extension hydro-cylinder life.
Drawings
Fig. 1 is a schematic cross-sectional structure view of a leak-proof hydraulic cylinder provided by the present invention;
fig. 2 is a schematic view of a cross-sectional structure of a filter box of the leak-proof hydraulic oil cylinder provided by the utility model;
fig. 3 is the utility model provides a positive structure sketch map of rose box of preventing leaking hydraulic cylinder.
In the figure: 1 cylinder barrel, 2 rear end covers, 3 fixing bolts, 4 front end covers, 5 sealing gaskets, 6 pistons, 7 piston rods, 8 protective rings, 9 sealing rings, 10 filter boxes, 11 box covers, 12 sealing gaskets, 13 filter screens, 14 oil inlet pipes, 15 one-way oil inlet valves, 16 oil return pipes, 17 one-way oil return valves, 18 observation windows and 19 dust-proof rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a leakage-proof hydraulic cylinder comprises a cylinder barrel 1, wherein the bottom of the cylinder barrel 1 is provided with a rear end cover 2, the cylinder barrel 1 is connected with the rear end cover 2 through a fixing bolt 3, the top of the cylinder barrel 1 is connected with a front end cover 4 through the fixing bolt 3, a sealing gasket 5 is arranged between the contact surfaces of the cylinder barrel 1, the rear end cover 2 and the front end cover 4, the cylinder barrel 1, the rear end cover 2 and the front end cover 4 are respectively provided with a threaded hole matched with the fixing bolt 3, the length of the fixing bolt 3 is larger than that of the front end cover 4 due to the thickness of the rear end cover 2, the fixing bolt 3 is connected with the sealing gasket 5 to the device, compared with a welded hydraulic cylinder, the leakage-proof hydraulic cylinder is more convenient and flexible to disassemble and maintain, has small damage to the hydraulic cylinder, is beneficial to prolonging the service life of the hydraulic cylinder and reducing the, the piston 6 is arranged in the cylinder barrel 1, a groove is formed in a new position of the piston 6, a piston rod 7 is welded at the bottom of the groove, a protective ring 8 is welded on the inner wall of the groove, the diameter of the protective ring 8 is matched with the diameter of the piston rod 7, the height of the protective ring 8 is larger than that of the groove, a sealing ring 9 is arranged on the outer wall of the piston 6, the sealing ring 9 is in sliding connection with the inner wall of the cylinder barrel 1, the abrasion between the piston 6 and the inner wall of the cylinder barrel is reduced, the protective ring 8 prevents the piston 6 from directly contacting with the front end cover 4, the abrasion degree between the piston 6 and the front end cover 4 is reduced, the service life of the oil cylinder is prolonged, a filter box 10 is welded on one side of the cylinder barrel 1, the filter box 10 is connected with a box cover 11 through bolts, a sealing sheet 12 is arranged between, the inner wall of the filter box 10 is connected with a filter screen 13 in a sliding manner, the filter screen 13 is provided with a handle, the inner wall of the filter box 10 is provided with a sliding chute, the sliding chute is arranged along the sliding direction of the filter screen 13, the length of the sliding chute is smaller than that of the inner wall of the filter box 10, the outer walls of two sides of the filter screen 13 are welded with sliding blocks, the sliding blocks are connected with the inner wall of the sliding chute in a sliding manner, the length of the sliding blocks is smaller than the depth of the sliding chute, the filter box 10 filters oil entering the oil inlet pipe 14 to filter impurities contained in the oil, so that the abrasion of the impurities on the inner wall of the cylinder barrel 1 is avoided, meanwhile, the impurities in the oil are prevented from blocking a pipeline to influence the normal use of the oil cylinder, one side, close to the rear end cover 2, of the filter box 10 is provided with a mounting hole, and the mounting hole is installed and is led to the oil return pipe 16 outside the cylinder 1, and oil return pipe 16 is provided with one-way oil return valve 17, rose box 10 is opened has observation window 18, and observation window 18 can observe the filter screen 13 state, is convenient for change filter screen 13.
The working principle is as follows: when the utility model works, the fixing bolt 3 makes the cylinder barrel 1 form a fastening connection with the rear end cover 2 and the front end cover 4, the sealing gasket 5 seals the device, so that the device can not leak, after the oil cylinder is installed, the oil is conveyed to the filter box 10 through the oil pipeline, the filter screen 13 in the filter box 10 filters the oil entering the filter box 10, the impurities in the filter box are filtered, the abrasion of the impurities on the inner wall of the cylinder barrel 1 is avoided, the leakage of the oil cylinder caused by pipeline blockage is prevented, the normal use of the oil cylinder is influenced, then the one-way oil inlet valve 15 is opened, the oil inlet pipe 14 enters the cylinder barrel 1, after a period of time, the hydraulic oil cylinder is started, the one-way oil return valve 17 arranged on the oil return pipe 16 is opened, the device works at the moment, the oil returned by the movement of the piston 6 in the oil return pipe 16 is conveyed to the filter box 10 through, at the moment, the filter screen 13 filters the oil again, so as to prevent impurities in the hydraulic oil cylinder from accumulating and wearing a sealing part of the oil cylinder, prevent the oil cylinder from leaking, the sealing ring 9 arranged on the piston 6 reduces the abrasion between the piston 6 and the inner wall of the cylinder barrel 1, prevent the oil cylinder from leaking due to serious abrasion between the piston 6 and the cylinder barrel 1, and prevent the piston 6 from directly contacting with the front end cover 4 by the protective ring 8, so as to reduce the abrasion degree between the piston 6 and the front end cover 4, further prevent the oil cylinder from leaking, prolong the service life of the oil cylinder, after the oil cylinder is used for a period of time, observe the impurity accumulation condition of the filter screen 13 through the observation window 18, when the impurity accumulation is excessive, close the oil cylinder, close the one-way oil inlet valve 15 at the same time, take down the box cover 11 of the filter box 10, take out the filter screen 13 along the sliding, the case cover 11 is fixedly installed.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A leakage-proof hydraulic oil cylinder comprises a cylinder barrel (1) and is characterized in that a rear end cover (2) is arranged at the bottom of the cylinder barrel (1), the cylinder barrel (1) is connected with the rear end cover (2) through a fixing bolt (3), the top of the cylinder barrel (1) is connected with a front end cover (4) through the fixing bolt (3), sealing gaskets (5) are arranged among contact surfaces of the cylinder barrel (1), the rear end cover (2) and the front end cover (4), a piston (6) is arranged inside the cylinder barrel (1), a groove is formed in a new position in the piston (6), a piston rod (7) is welded at the bottom of the groove, a protective ring (8) is welded on the inner wall of the groove, a sealing ring (9) is arranged on the outer wall of the piston (6), the sealing ring (9) is in sliding connection with the inner wall of the cylinder barrel (1), a filter box (10) is welded on one, and be provided with gasket (12) between rose box (10) and case lid (11), case lid (11) central point puts to open there is the mounting hole, and the mounting hole installs defeated oil pipe, rose box (10) inner wall sliding connection has filter screen (13), and filter screen (13) are provided with the handle, rose box (10) are being close to rear end cap (2) one side and are opened there is the mounting hole, and the mounting hole installs inlet pipe (14), inlet pipe (14) run through rear end cap (2) and get into inside cylinder (1), and inlet pipe (14) are provided with one-way inlet valve (15), rear end cap (2) are opened there is the mounting hole, and the mounting hole installs back oil pipe (16) that accesss to cylinder (1) outside, and back oil pipe (16) are provided with one-way back oil valve (17), rose box (10) are opened there is observation window (18).
2. A leak-proof hydraulic cylinder according to claim 1, characterized in that the filter box (10) has a chute in its inner wall, and the chute is arranged along the sliding direction of the filter screen (13), and the length of the chute is less than the length of the inner wall of the filter box (10).
3. A leak-proof hydraulic cylinder according to claim 1, characterized in that the outer walls of both sides of the filter screen (13) are welded with slide blocks, and the slide blocks are connected with the inner wall of the sliding groove in a sliding manner, and the length of the slide blocks is less than the depth of the sliding groove.
4. A leak-proof hydraulic cylinder according to claim 1, characterised in that the outer wall of the front end cover (4) is provided with a dust ring (19), and the diameter of the dust ring (19) is adapted to the diameter of the piston rod (7).
5. A leak-proof hydraulic ram according to claim 1, characterised in that the diameter of the guard ring (8) is adapted to the diameter of the piston rod (7) and that the height of the guard ring (8) is greater than the height of the recess.
6. A leak-proof hydraulic cylinder according to claim 1, characterized in that the cylinder (1), the rear end cap (2) and the front end cap (4) are provided with threaded holes adapted to the fixing bolts (3), and the length of the fixing bolts (3) is greater than the thickness of the front end cap (4) due to the thickness of the rear end cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021603263.9U CN212803827U (en) | 2020-08-05 | 2020-08-05 | Anti-leakage hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021603263.9U CN212803827U (en) | 2020-08-05 | 2020-08-05 | Anti-leakage hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212803827U true CN212803827U (en) | 2021-03-26 |
Family
ID=75105976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021603263.9U Active CN212803827U (en) | 2020-08-05 | 2020-08-05 | Anti-leakage hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212803827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263649A (en) * | 2021-12-27 | 2022-04-01 | 无锡申佳液压科技有限公司 | Hydraulic oil cylinder with protective structure and use method |
-
2020
- 2020-08-05 CN CN202021603263.9U patent/CN212803827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263649A (en) * | 2021-12-27 | 2022-04-01 | 无锡申佳液压科技有限公司 | Hydraulic oil cylinder with protective structure and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231027 Address after: 415700 Group 10, Gaowan Village, Zoushi Town, Taoyuan County, Changde City, Hunan Province Patentee after: Hunan Hengda Hydraulic Co.,Ltd. Address before: 415000 in Dahua Industrial Park, Taoyuan County, group 3, Gaowan village, Zoushi Town, Taoyuan County, Changde City, Hunan Province Patentee before: Hunan Dahua Machinery Co.,Ltd. |
|
| TR01 | Transfer of patent right |