CN216691679U - Hydraulic rod sealing oil seal with good sealing performance - Google Patents
Hydraulic rod sealing oil seal with good sealing performance Download PDFInfo
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- CN216691679U CN216691679U CN202123082265.5U CN202123082265U CN216691679U CN 216691679 U CN216691679 U CN 216691679U CN 202123082265 U CN202123082265 U CN 202123082265U CN 216691679 U CN216691679 U CN 216691679U
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Abstract
The utility model discloses a hydraulic rod sealing oil seal with good sealing performance, which belongs to the technical field of hydraulic rods and comprises a hydraulic rod shell, a cylinder cover, a piston rod and a guide sleeve, wherein the guide sleeve is arranged in the hydraulic rod shell, the piston rod is installed in the center of the guide sleeve in a penetrating and sliding mode, and the cylinder cover is installed on the top of the hydraulic rod shell in a threaded mode. According to the utility model, the tightness of the gap between the inner wall of the hydraulic rod and the guide sleeve is increased through the cylinder cover with the thread of the sealed conical pipe coated with the thread seal tape, the tightness of the gap between the inner wall of the hydraulic rod and the guide sleeve is enhanced through the seal groove and the oil seal B, hydraulic oil leakage is effectively avoided, the oil seal C is protected through the protective cover, the sealing effect of the oil seal C is effectively prevented from being influenced by the deformation of the oil seal C caused by the direct action of the pressure of the hydraulic oil in the hydraulic rod on the oil seal C, and meanwhile, the protective cover installed through the thread and the clamped oil seal C facilitate the replacement of the oil seal C which is easy to damage.
Description
Technical Field
The utility model belongs to the technical field of hydraulic rods, and particularly relates to a hydraulic rod sealing oil seal with good sealing performance.
Background
The hydraulic rod is an actuating element which converts hydraulic pressure into mechanical energy and does linear reciprocating motion, and the hydraulic rod needs to seal the inside of the hydraulic rod through an oil seal to prevent hydraulic oil leakage under the pressure action of internal hydraulic oil.
The sealing effect of the traditional oil seal inside the hydraulic rod is not good enough, hydraulic oil flows out through gaps between the inner wall of the hydraulic rod and the guide sleeve, between the guide sleeve and the piston rod with probability, and then the hydraulic rod is led to unload force to cause abnormal use, serious danger accidents can be caused, and the oil seal between the bottom of the guide sleeve and the piston rod is easily deformed by the hydraulic oil stamping inside the hydraulic rod, so that the sealing effect of the oil seal is lost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: in order to solve the problems, the hydraulic rod sealing oil seal with good sealing performance is provided.
The technical scheme adopted by the utility model is as follows: the utility model provides a hydraulic stem sealing oil that leakproofness is good, includes hydraulic stem shell, cylinder cap, piston rod, uide bushing, the inside uide bushing that is provided with of hydraulic stem shell, the uide bushing center runs through slidable mounting and has the piston rod, the cylinder cap is installed to hydraulic stem shell top screw thread, inside being provided with of hydraulic stem shell the top is inflated and is strengthened sealing mechanism, inside recess sealing mechanism and prevent pressing sealing mechanism.
Wherein, the top is inflated and is strengthened sealing mechanism and include: the air inlet device comprises an oil seal A, an air guide pipe, an air inlet cavity, a ventilating plate and a one-way air inlet plug, wherein the oil seal A is fixedly mounted on one side of a piston rod close to the lower position of a cylinder cover, the air guide pipe is arranged at an opening on one side of the piston rod close to the oil seal A, the air inlet cavity is formed in the top opening of the air guide pipe, the ventilating plate is fixedly mounted in the air inlet cavity, and the one-way air inlet plug is elastically mounted on one side of the ventilating plate through a spring.
Wherein the internal groove sealing mechanism comprises: the hydraulic rod comprises a sealing groove and an oil seal B, wherein the opening of the inner wall of the hydraulic rod shell, which is close to the lower position of the cylinder cover, is provided with the sealing groove, and the oil seal B is fixedly arranged on one side of the guide sleeve.
Wherein, prevent pressing sealing mechanism includes: oil blanket C, protective cover, piston rod one side is close to uide bushing bottom position embedding joint and is provided with oil blanket C, the uide bushing bottom is close to oil blanket C below position screw thread and installs the protective cover.
Wherein, the cylinder cover is a sealed conical tube thread laid with a thread seal tape.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. according to the hydraulic rod sealing structure, the cylinder cover with the thread of the sealed conical pipe coated with the thread tape increases the sealing performance of a gap between the inner wall of the hydraulic rod and the guide sleeve, and the sealing performance of the gap between the inner wall of the hydraulic rod and the guide sleeve is enhanced through the sealing groove and the oil seal B, so that hydraulic oil leakage is effectively avoided.
2. According to the utility model, the oil seal C is protected by the protective cover, so that the oil seal C is effectively prevented from being deformed and influencing the sealing effect of the oil seal C due to the fact that the pressure of hydraulic oil in the hydraulic rod directly acts on the oil seal C, and meanwhile, the protective cover installed through threads and the oil seal C clamped are convenient for replacing the oil seal C which is easy to damage.
3. According to the utility model, the air guide pipe is used for inflating the interior of the oil seal A to increase the sealing property of the oil seal A, and the one-way air inlet plug is used for preventing the air pressure in the oil seal A from leaking, so that the sealing property of a gap between the piston rod and the guide sleeve is effectively ensured, the leakage of hydraulic oil is avoided, and the normal use of the hydraulic rod is ensured.
Drawings
FIG. 1 is a schematic diagram of the front structure of the present invention;
FIG. 2 is a schematic diagram of an enlarged structure at A in FIG. 1 according to the present invention;
fig. 3 is a schematic diagram of a three-dimensional structure of the guide sleeve, the piston rod and the protective cover in the utility model.
The labels in the figure are: 1. a hydraulic rod housing; 101. a cylinder cover; 102. a piston rod; 103. a guide sleeve; 2. oil seal A; 201. an air duct; 3. an air inlet cavity; 301. a gas permeable plate; 302. a unidirectional air inlet plug; 4. a sealing groove; 401. oil seal B; 5. oil seal C; 501. a protective cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the utility model:
referring to fig. 1-3, a hydraulic rod sealing oil seal with good sealing performance comprises a hydraulic rod shell 1, a cylinder cover 101, a piston rod 102 and a guide sleeve 103, wherein the guide sleeve 103 is arranged inside the hydraulic rod shell 1, the piston rod 102 is slidably mounted in the center of the guide sleeve 103 in a penetrating mode, the cylinder cover 101 is mounted at the top of the hydraulic rod shell 1 through threads, and a top inflating strengthening sealing mechanism, an internal groove sealing mechanism and a pressure preventing sealing mechanism are arranged inside the hydraulic rod shell 1.
Referring to fig. 1 and 2, in the present embodiment, the top inflation reinforced sealing mechanism includes: the air inlet device comprises an oil seal A2, an air duct 201, an air inlet cavity 3, a ventilating plate 301 and a one-way air inlet plug 302;
an oil seal A2 is fixedly arranged at a position, close to the lower part of the cylinder cover 101, on one side of the piston rod 102, wherein the inside of the oil seal A2 is hollow, and an air duct 201 is arranged at an opening at a position, close to the oil seal A2, in the piston rod 102;
an air inlet cavity 3 is arranged at the top opening of the air duct 201, a ventilation plate 301 is fixedly arranged in the air inlet cavity 3, a one-way air inlet plug 302 is elastically arranged at one side of the ventilation plate 301 through a spring, wherein, the size of the unidirectional air inlet plug 302 is matched with that of the air inlet cavity 3, the staff drives the air into the air duct 201 through the inflator, the air presses the unidirectional air inlet plug 302 to move downwards, the air enters the air duct 201 at the bottom from the air permeable plate 301 through the air inlet cavity 3 after the unidirectional air inlet plug 302 moves downwards, and then enters the oil seal A2 through the air duct 201, the volume of the oil seal A2 is collided after enough air is stored, the sealing effect of the oil seal A2 is increased, and after the inflation is finished, the spring presses the one-way air inlet plug 302 to block the air inlet of the air inlet cavity 3, can effectually prevent the inside gaseous outflow of oil blanket A2, the effectual sealed effect that avoids oil blanket A2 descends.
Referring to fig. 1, in the present embodiment, the internal groove sealing mechanism includes: seal groove 4, oil seal B401;
the opening of the position below the cylinder cover 101 on the inner wall of the hydraulic rod shell 1 is provided with a sealing groove 4, one side of the guide sleeve 103 is fixedly provided with an oil seal B401, the oil seal B401 is matched with the sealing groove 4 in size, the oil seal B401 embedded into the sealing groove 4 can be more effectively sealed, and hydraulic oil is prevented from leaking through the gap at the bottom of the cylinder cover 101.
Referring to fig. 1 and 3, in the present embodiment, the pressure-proof sealing mechanism includes: oil seal C5 and protective cover 501;
In this embodiment, the cylinder cover 101 is a sealed conical pipe thread coated with a raw material tape, and the cylinder cover 101 with the sealed conical pipe thread coated with the raw material tape can play a good sealing role to prevent hydraulic oil from leaking.
The working principle is as follows: firstly, a worker nests a cylinder cover 101 on a piston rod 102, then the worker nests a guide sleeve 103 on the piston rod 102, then the guide sleeve 103 and the piston rod 102 are simultaneously plugged into a hydraulic rod shell 1, the cylinder cover 101 is rotated to be in threaded connection with the hydraulic rod shell 1 after being plugged, the cylinder cover 101 with a thread coated with a thread is sealed by a sealed conical pipe can play a good role in sealing, hydraulic oil is prevented from leaking, an oil seal B401 embedded into a sealing groove 4 can be more effectively sealed, the sealing effect is further enhanced, hydraulic oil is prevented from leaking through a gap between the guide sleeve 103 and the hydraulic rod shell 1 at the bottom of the cylinder cover 101, then an oil seal C5 at the bottom of the guide sleeve 103 can be effectively sealed by the oil seal C5 at the inner part, hydraulic oil is prevented from flowing out through the gap between the piston rod 102 and the guide sleeve 103, and a protective cover 501 can prevent the pressure of the hydraulic oil plugged into the hydraulic rod shell 1 from directly acting on an oil seal C5 to cause the deformation and the sealing effect of the oil seal C5 to be poor, meanwhile, the staff squeezes air into the air guide pipe 201 through the inflator, the air presses the one-way air inlet plug 302 to move downwards, the air flows into the air guide pipe 201 at the bottom through the air inlet cavity 3 through the air permeable plate 301 after the one-way air inlet plug 302 moves downwards, then the air enters the oil seal A2 through the air guide pipe 201, the oil seal A2 stores enough air and then the volume of the air collides, the sealing effect of the oil seal A2 is increased, the spring presses the one-way air inlet plug 302 to plug the air inlet of the air inlet cavity 3 after inflation is finished, the internal air of the oil seal A2 can be effectively prevented from flowing out, the sealing effect of the oil seal A2 is effectively avoided from being reduced, and the sealing effect of a gap between the piston rod 102 and the guide sleeve 103 is better.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a hydraulic stem sealing oil that leakproofness is good, includes hydraulic stem shell (1), cylinder cap (101), piston rod (102), uide bushing (103), inside uide bushing (103) that is provided with of hydraulic stem shell (1), there is piston rod (102) uide bushing (103) center through movable mounting, cylinder cap (101), its characterized in that are installed to hydraulic stem shell (1) top screw thread: the hydraulic rod shell (1) is internally provided with a top inflating strengthening sealing mechanism, an internal groove sealing mechanism and a pressure-proof sealing mechanism.
2. The hydraulic rod sealing oil seal with good sealing performance as claimed in claim 1, wherein: the top is inflated and is strengthened sealing mechanism includes: the air inlet device comprises an oil seal A (2), an air duct (201), an air inlet cavity (3), a ventilation plate (301) and a one-way air inlet plug (302);
an oil seal A (2) is arranged at one side of the piston rod (102) close to the lower position of the cylinder cover (101), and an air guide pipe (201) is arranged at an opening at one side of the piston rod (102) close to the oil seal A (2);
the air guide pipe (201) is provided with an air inlet cavity (3) at the top opening, an air permeable plate (301) is arranged inside the air inlet cavity (3), and a one-way air inlet plug (302) is elastically arranged on one side of the air permeable plate (301) through a spring.
3. The hydraulic rod sealing oil seal with good sealing performance as claimed in claim 1, wherein: the internal groove sealing mechanism includes: a seal groove (4) and an oil seal B (401);
the hydraulic rod shell (1) is provided with a sealing groove (4) in the opening close to the lower position of the cylinder cover (101), and an oil seal B (401) is installed on one side of the guide sleeve (103).
4. The hydraulic rod sealing oil seal with good sealing performance as claimed in claim 1, wherein: prevent pressing sealing mechanism includes: an oil seal C (5) and a protective cover (501);
piston rod (102) one side is close to uide bushing (103) bottom position embedding joint and is provided with oil blanket C (5), uide bushing (103) bottom is close to oil blanket C (5) below position screw thread and installs protective cover (501).
5. The hydraulic rod sealing oil seal with good sealing performance as claimed in claim 1, wherein: the cylinder cover (101) is a sealed conical pipe thread laid with a thread tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123082265.5U CN216691679U (en) | 2021-12-09 | 2021-12-09 | Hydraulic rod sealing oil seal with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123082265.5U CN216691679U (en) | 2021-12-09 | 2021-12-09 | Hydraulic rod sealing oil seal with good sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216691679U true CN216691679U (en) | 2022-06-07 |
Family
ID=81839008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123082265.5U Active CN216691679U (en) | 2021-12-09 | 2021-12-09 | Hydraulic rod sealing oil seal with good sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216691679U (en) |
-
2021
- 2021-12-09 CN CN202123082265.5U patent/CN216691679U/en active Active
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