CN113565963A - Sealing mechanism of wet clutch of press machine - Google Patents
Sealing mechanism of wet clutch of press machine Download PDFInfo
- Publication number
- CN113565963A CN113565963A CN202111037725.4A CN202111037725A CN113565963A CN 113565963 A CN113565963 A CN 113565963A CN 202111037725 A CN202111037725 A CN 202111037725A CN 113565963 A CN113565963 A CN 113565963A
- Authority
- CN
- China
- Prior art keywords
- sealing
- main shaft
- clutch piston
- sleeve
- sealing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 258
- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 94
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 38
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005242 forging Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 9
- 238000010030 laminating Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention relates to the technical field of forging machinery, in particular to a sealing mechanism of a wet clutch of a press machine, which comprises a sealed shaft seat, wherein the sealed shaft seat is arranged at the connecting part of a clutch piston cylinder and a main shaft and is used for preventing the air from entering the connecting part of the clutch piston cylinder and the main shaft, a first sealed component is arranged at the connecting part of the main shaft and the clutch piston and is used for preventing hydraulic oil from leaking, a second sealed component is arranged at the connecting part of the clutch piston cylinder and the clutch piston and is used for placing the hydraulic oil from leaking, a third sealed component is arranged at an oil inlet, a fourth sealed component is arranged at an oil inlet nozzle, and the third sealed component and the fourth sealed component are used for ensuring the sealing of an oil duct.
Description
Technical Field
The invention relates to the technical field of forging machinery, in particular to a sealing mechanism of a wet clutch of a press machine.
Background
At present, in the forging machinery industry, the traditional sealing method is mostly adopted for sealing a wet clutch in a transmission system of a common small and medium-sized forging machine tool, namely, the flywheel bearing and the clutch are sealed, the lubrication of the flywheel bearing is lubricated by oil thrown out by the wet clutch during working, through practical use, the wet clutch with the structure is easy to leak oil, the machine needs to be stopped when the bearing seal is replaced, and the production cost is increased.
Chinese patent application No. CN201120219125.5 discloses a wet clutch of a press machine, which adopts a structure that the front and the rear ends of the wet clutch are respectively provided with a front seal and a rear seal, and is used for sealing thin oil in the wet clutch in a working cavity so as to ensure that the wet clutch does not leak oil and works normally; meanwhile, the wet clutch is arranged in the flywheel, and the flywheel bearing are arranged side by side, so that the front and the back of the bearing are respectively provided with the front bearing seal and the back bearing seal, the flywheel bearing and the wet clutch are respectively sealed, but the integral sealing mode can not effectively seal the oil leakage part of the clutch, the leakage condition is still generated in the clutch, and the integral sealing structure occupies a larger space and is not beneficial to comprehensive utilization of the space.
Disclosure of Invention
In order to solve the technical problem, a sealing mechanism of a wet clutch of a press machine is provided. The technical problem that the integral closed structure occupies a large space and is not beneficial to equipment assembly is solved by the technical scheme.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a sealing mechanism of a wet clutch of a press machine comprises the wet clutch of the press machine, wherein a clutch piston cylinder and a clutch piston are coaxially arranged on a main shaft of the wet clutch of the press machine, the clutch piston cylinder and the clutch piston are used for conveying hydraulic oil through an oil duct arranged in the main shaft, the oil duct is coaxially arranged with the main shaft, an oil inlet is formed in one end of the main shaft of the oil duct, an oil inlet nozzle is radially arranged on the oil duct, and the wet clutch of the press machine is sealed through the sealing mechanism arranged aiming at each part;
the sealing mechanism comprises a sealing shaft seat, the sealing shaft seat is arranged at a connecting position of the clutch piston cylinder and the main shaft, the sealing shaft seat is used for preventing the connecting position of the clutch piston cylinder and the main shaft from air inlet, a first sealing component is arranged at the connecting position of the main shaft and the clutch piston, the first sealing component is used for preventing hydraulic oil from leaking, a second sealing component is arranged at the connecting position of the clutch piston cylinder and the clutch piston, the second sealing component is used for placing hydraulic oil from leaking, a third sealing component is arranged at an oil inlet, a fourth sealing component is arranged at an oil inlet, and the third sealing component and the fourth sealing component are used for guaranteeing the sealing of the oil duct.
Preferably, airtight axle bed is including the mounting panel, mounting panel and the coaxial setting of main shaft, one side of mounting panel fixed mounting clutch piston cylinder, be provided with first sleeve on the mounting panel, first sleeve and the coaxial setting of mounting panel, first sleeve suit is in the main shaft outside, the one end that clutch piston cylinder was pressed close to first sleeve inboard is provided with the thread groove, the main shaft is provided with the thread bush with first telescopic joint position, thread groove and main shaft spiral erection joint, the front end of thread groove is provided with the stopper, the stopper has certain space with the thread groove, the surface of the inner wall laminating main shaft of stopper.
Preferably, the mounting plate is fixedly mounted with a clutch piston cylinder of the press wet clutch through a first fixing bolt, the first fixing bolt penetrates through the mounting plate and is spirally inserted into one side of the clutch piston cylinder, and the first fixing bolt is provided with a plurality of fixing bolts.
Preferably, a first sealing ring is sleeved in the first sleeve and sleeved between the limiting block and the thread groove, the thread groove and the thread sleeve are tightly attached to the first sealing ring, the first sealing ring is coaxially arranged on the main shaft, and the first sealing ring is tightly attached to the connecting part of the main shaft and the limiting block.
Preferably, a second sealing ring is sleeved in the first sleeve, the second sealing ring is sleeved on one side, facing the opening of the first sleeve, of the limiting block, and one side of the second sealing ring is tightly attached to the outer wall of the main shaft.
Preferably, the first sealing assembly comprises a third sealing ring, the third sealing ring is fixedly installed in a groove formed in one side, facing the clutch piston cylinder, of the clutch piston, the third sealing ring is coaxially arranged with the main shaft, the size of the third sealing ring is matched with that of the groove, and the surface of the third sealing ring and the surface of the clutch piston are located on the same horizontal plane.
Preferably, the outer side of the groove of the clutch piston is provided with at least one group of limiting grooves, a third sealing ring of the first sealing assembly is provided with a limiting lug matched with the limiting grooves in shape and size, the third sealing ring penetrates through the limiting lug through a fixing screw to be fixedly connected with the clutch piston, and the fixing screw is installed in an embedded mode.
Preferably, the circumferential side of the clutch piston is provided with a ring groove, the second sealing assembly is installed in the ring groove in a limiting mode, the second sealing assembly comprises a fourth sealing ring, the fourth sealing ring is sleeved on the ring groove, the size of the fourth sealing ring is matched with that of the ring groove, tooth grooves are formed in the circumferential side of the fourth sealing ring and are provided with a plurality of tooth grooves, and the tooth grooves divide the surface of the fourth sealing ring into a plurality of D-shaped sealing rings.
Preferably, the third sealing assembly comprises a second sleeve, the second sleeve is inserted into an oil inlet of the main shaft, a plurality of annular teeth are arranged on the periphery of the second sleeve, an annular tooth groove matched with the annular teeth on the second sleeve in shape and size is formed in the inner wall of the oil inlet, the annular teeth are installed in the annular tooth groove in a limiting mode, a sealing cover is arranged at one outward end of the second sleeve, the sealing cover seals the connecting position of the second sleeve and the oil inlet, and the sealing cover is fixedly installed on the main shaft through a second fixing bolt.
Preferably, the fourth sealing assembly comprises at least one fifth sealing ring, the fifth sealing ring is sleeved at the connecting part of the output end of the oil inlet nozzle and the oil duct, the fifth sealing ring is tightly attached to the oil inlet nozzle and the oil duct, the fourth sealing assembly further comprises a sealing sleeve, the sealing sleeve is sleeved on the outer surface of the oil inlet nozzle, and the sealing sleeve can be attached to the shape of the mounting part of the oil inlet nozzle and the main shaft.
Compared with the prior art, the application has the beneficial effects that:
1. this application sets up different sealing mechanism through the oil duct to press wet clutch and the contact position of each spare part and realizes the sealed to press wet clutch to guarantee to implement effectual sealed to press wet clutch in minimum space, do not influence the connection of flywheel subassembly, reduce the occupation space volume of equipment.
2. This application is through the thread groove of airtight axle bed and the mounted position of the fixed airtight axle bed of thread bush spiral installation, carries out the multichannel to the hydraulic oil that gets into the gap between main shaft and the clutch piston cylinder through the convex screw thread on the thread bush and blocks, has solved the problem that hydraulic oil laminating main shaft surface is revealed from the junction of main shaft and clutch piston cylinder.
3. This application passes mounting panel spiral cartridge through first fixing bolt and fixes the position of mounting panel in one side of clutch piston cylinder, guarantees that the stable position of mounting panel can not appear removing.
4. This application improves the leakproofness that thread bush and thread groove are connected the position through first sealing washer, has realized that hydraulic oil reveals through thread groove department can be inside by the separation of first sealing washer, can also avoid the direct contact of thread bush and stopper to lead to wearing and tearing to warp.
5. This application can prevent through the second sealing washer that inside hydraulic oil through thread groove and first sealing washer department from outwards leaking, also can prevent the invasion of external air or dust, carries out the closure of strengthening to the way strength of revealing of hydraulic oil when guaranteeing airtight axle bed airtight.
6. This application seals the main shaft through embedded third sealing washer of installing in the recess and the connection site of clutch piston, avoids first airtight subassembly to influence the laminating of clutch piston and clutch piston cylinder, does not influence the part installation of clutch piston outside, has practiced thrift outside space.
7. This application is provided with the spacing lug that corresponds with spacing groove quantity shape and spacing installation in spacing groove through on the third sealing washer and can avoid the third sealing washer rotatory problem appearance that leads to the sealing performance to descend in the recess.
8. This application both can guarantee through the tooth's socket that the week side of fourth sealing washer set up not influence the removal of clutch piston when the lateral wall contact of fourth sealing washer and clutch piston cylinder, also can form multichannel sealing ring on the fourth sealing washer, carry out multiple stopping to hydraulic oil.
9. This application through on the airtight subassembly of third with the spacing installation of annular tooth's socket realize strengthening the sealed effect that the airtight subassembly of third was revealed to hydraulic oil through the route of revealing that increases hydraulic oil.
10. This application is through setting up the fifth sealing washer on the oil feed mouth and the suit at the outside seal cover of oil feed mouth, guarantees inside can not produce revealing of hydraulic oil, has also avoided outside air and dust to get into the position of being connected of oil feed mouth and oil duct.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a partial enlarged view of FIG. 3 at B;
FIG. 5 is an enlarged view of a portion of FIG. 3 at C;
FIG. 6 is an enlarged view of a portion of FIG. 3 at D;
FIG. 7 is an enlarged view of a portion of FIG. 3 at E;
FIG. 8 is a perspective view of the spindle of the present invention;
FIG. 9 is an enlarged view of a portion of FIG. 8 at F;
FIG. 10 is a perspective view of the clutch piston of the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10 at G;
FIG. 12 is a first perspective view of the sealed axle seat of the present invention;
FIG. 13 is a second perspective view of the sealed axle seat of the present invention;
FIG. 14 is a first perspective view of a third closure assembly in accordance with the present invention;
FIG. 15 is a second perspective view of a third closure assembly in accordance with the present invention;
the reference numbers in the figures are:
1-press wet clutch; 1 a-a main shaft; 1a 1-oil gallery; 1a 2-oil inlet; 1a 3-oil inlet nozzle; 1a 4-thread bush; 1a 5-annular gullet; 1 b-a clutch piston cylinder; 1 c-a clutch piston; 1c 1-groove; 1c 2-limit groove; 1c 3-ring groove;
2-sealing the shaft seat; 2 a-a mounting plate; 2a1 — first fixing bolt; 2 b-a first sleeve; 2b1 — first seal ring; 2b2 — second seal ring; 2 c-thread groove; 2 d-a limiting block;
3-a first containment assembly; 3 a-a third seal ring; 3 b-a limit bump; 3 c-a set screw;
4-a second containment assembly; 4 a-a fourth seal ring; 4a 1-gullet;
5-a third containment assembly; 5 a-a second sleeve; 5a 1-ring teeth; 5 b-sealing cover; 5 c-a second fixing bolt; 6-a fourth containment assembly; 6 a-a fifth sealing ring; 6 b-sealing sleeve.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In order to solve the technical problems that the integral closed structure occupies a large space and is not beneficial to the assembly of equipment, as shown in fig. 1 to 3, the following preferred technical solutions are provided:
a sealing mechanism of a wet clutch of a press machine comprises the wet clutch 1 of the press machine, wherein a clutch piston cylinder 1b and a clutch piston 1c are coaxially arranged on a main shaft 1a of the wet clutch 1 of the press machine, the clutch piston cylinder 1b and the clutch piston 1c convey hydraulic oil through an oil duct 1a1 arranged in the main shaft 1a, an oil duct 1a1 is coaxially arranged with the main shaft 1a, an oil inlet 1a2 is formed in one end of the main shaft 1a of the oil duct 1a1, an oil inlet 1a3 is radially arranged on the oil duct 1a1, and the wet clutch 1 of the press machine is sealed through the sealing mechanism arranged aiming at each part;
the sealing mechanism comprises a sealing shaft seat 2, the sealing shaft seat 2 is installed at the connecting part of a clutch piston cylinder 1b and a main shaft 1a, the sealing shaft seat 2 is used for preventing the connecting part of the clutch piston cylinder 1b and the main shaft 1a from air inflow, a first sealing component 3 is arranged at the connecting part of the main shaft 1a and the clutch piston 1c, the first sealing component 3 is used for preventing hydraulic oil from leaking, a second sealing component 4 is arranged at the connecting part of the clutch piston cylinder 1b and the clutch piston 1c, the second sealing component 4 is used for placing hydraulic oil from leaking, a third sealing component 5 is arranged at an oil inlet 1a2, a fourth sealing component 6 is arranged at an oil inlet 1a3, and the third sealing component 5 and the fourth sealing component 6 are used for ensuring the sealing of an oil duct 1a 1.
Specifically, in the present embodiment, different sealing mechanisms are arranged at contact positions of the oil duct 1a1 of the press wet clutch 1 and each component to seal the press wet clutch 1, so as to ensure that the press wet clutch 1 is effectively sealed in a minimum space, connection of a flywheel assembly is not affected, and occupied space volume of the device is reduced, in the present embodiment, the connection position of the main shaft 1a of the press wet clutch 1 and the clutch piston cylinder 1b is sealed through the sealed shaft seat 2, the clutch piston cylinder 1b of the press wet clutch 1 is fixedly installed on the main shaft 1a, the clutch piston cylinder 1b needs to ensure sealing of an internal space of the clutch piston 1c, leakage of hydraulic oil is avoided, stability of the installation of the clutch piston cylinder 1b on the main shaft 1a is also needed to be ensured, and influence of shaking of the clutch piston cylinder 1b on the press wet clutch 1 during rotation movement of the clutch piston 1c on the working of the press wet clutch 1 is avoided As for quality, the closed shaft seat 2 is arranged at the connecting part of the main shaft 1a of the clutch piston cylinder 1b to strengthen the connection between the clutch piston cylinder 1b and the main shaft 1a, and simultaneously seal the connecting part to ensure the sealing of the connecting part between the clutch piston cylinder 1b and the main shaft 1 a; in the embodiment, the connection part of the main shaft 1a and the clutch piston 1c is sealed through the first sealing component 3, the clutch piston 1c needs to move on the main shaft 1a, the connection part of the main shaft 1a and the clutch piston 1c is easy to leak hydraulic oil, the first sealing component 3 can seal the connection part of the main shaft 1a and the clutch piston 1c on the premise of ensuring the smooth movement of the clutch piston 1c, and the sealing part is arranged on the inner side of the clutch piston 1c, so that the installation of parts outside the clutch piston 1c is not influenced, and the space is saved; in the embodiment, the second sealing component 4 is used for sealing the connection part between the clutch piston 1c and the clutch piston cylinder 1b, when the clutch piston 1c moves in the clutch piston cylinder 1b, the joint part between the clutch piston 1c and the clutch piston cylinder 1b moves relatively, which is easy to cause leakage of hydraulic oil, the second sealing component 4 is used for sealing the connection part between the clutch piston cylinder 1b and the clutch piston 1c, and simultaneously the relative movement between the clutch piston cylinder 1b and the clutch piston 1c is not influenced, so that the normal operation of the clutch piston 1c is ensured, in the embodiment, the third sealing component 5 and the fourth sealing component 6 are used for sealing the oil inlet 1a2 on the oil duct 1a1 and the oil inlet 1a3, so that the sealing performance of the oil duct 1a1 is ensured, and the phenomenon of air leakage and oil leakage is avoided when hydraulic oil is conveyed in the oil duct 1a1 and enters the wet clutch 1 of the press machine, the normal work of the equipment is ensured.
Further, in order to solve the technical problem of how to fix and seal the connection part of the clutch piston cylinder 1b and the main shaft 1a by the sealed shaft seat 2, as shown in fig. 4, 12 and 13, the following preferred technical solutions are provided: airtight axle bed 2 is including mounting panel 2a, mounting panel 2a and the coaxial setting of main shaft 1a, one side of mounting panel 2a fixed mounting clutch piston cylinder 1b, be provided with first sleeve 2b on mounting panel 2a, first sleeve 2b and the coaxial setting of mounting panel 2a, first sleeve 2b suit is in the main shaft 1a outside, the inboard one end of pressing close to clutch piston cylinder 1b of first sleeve 2b is provided with thread groove 2c, main shaft 1a is provided with thread bush 1a4 with the position of being connected of first sleeve 2b, thread groove 2c and main shaft 1a spiral erection joint, the front end of thread groove 2c is provided with stopper 2d, stopper 2d has certain space with thread groove 2c, the surface of stopper 2 d's inner wall laminating main shaft 1 a.
Specifically, the closed shaft seat 2 in this embodiment is integrated with the first sleeve 2b through the mounting plate 2a, the mounting plate 2a is used for fixedly connecting one side of the clutch piston cylinder 1b, so as to ensure the fixed connection between the closed shaft seat 2 and the clutch piston cylinder 1b, the first sleeve 2b is sleeved on the main shaft 1a to ensure the axial position of the closed shaft seat 2, the thread groove 2c of the closed shaft seat 2 and the thread sleeve 1a4 of the wet clutch 1 of the press machine are conveniently and spirally mounted, the thread groove 2c and the thread sleeve 1a4 are spirally mounted to fix the mounting position of the closed shaft seat 2, and the hydraulic oil entering the gap between the main shaft 1a and the clutch piston cylinder 1b can be blocked in multiple ways through the raised threads on the thread sleeve 1a4, so as to prevent the leakage of the hydraulic oil sticking to the surface of the main shaft 1a from flowing out from the connection between the main shaft 1a and the clutch piston cylinder 1 b.
Further, in order to solve the technical problem of how to fixedly mount the mounting plate 2a on the surface of the clutch piston cylinder 1b, as shown in fig. 4, the following preferred technical solutions are provided: the mounting plate 2a is fixedly mounted to a clutch piston cylinder 1b of the press wet clutch 1 by a first fixing bolt 2a1, the first fixing bolt 2a1 is inserted through the mounting plate 2a and screwed into one side of the clutch piston cylinder 1b, and the first fixing bolts 2a1 are plural.
Specifically, in the sealed shaft seat 2 of the present embodiment, after the thread groove 2c is spirally mounted with the thread bushing 1a4 on the main shaft 1a, the mounting plate 2a is attached to one side of the clutch piston cylinder 1b, in order to prevent the connection position between the thread groove 2c and the thread bushing 1a4 from becoming loose when the wet clutch 1 of the press machine works, so that the sealing effect of the sealed shaft seat 2 is reduced, the position of the mounting plate 2a is fixed by the first fixing bolt 2a1 penetrating through the mounting plate 2a and spirally inserted into one side of the clutch piston cylinder 1b, and it is ensured that the position of the mounting plate 2a is stable and does not move.
Further, in order to solve the technical problem of how to ensure the tightness at the thread groove 2c, as shown in fig. 4, 12 and 13, the following preferred technical solutions are provided: a first sealing ring 2b1 is sleeved in the first sleeve 2b, the first sealing ring 2b1 is sleeved between the limiting block 2d and the thread groove 2c, the first sealing ring 2b1 is tightly attached to the thread groove 2c and the thread sleeve 1a4, the first sealing ring 2b1 is coaxially arranged on the main shaft 1a, and the first sealing ring 2b1 is tightly attached to the connecting part of the main shaft 1a and the limiting block 2 d.
Specifically, the limiting block 2d in this embodiment is disposed at the limiting block 2d and has a certain space with the thread groove 2c for installing the first sealing ring 2b1, the first sealing ring 2b1 may be a "U" shaped sealing ring, the first sealing ring 2b1 extrudes the first sealing ring 2b1 along with the screw installation of the thread groove 2c and the thread bushing 1a4, and the sealing performance after the first sealing ring 2b1 is extruded is improved, which not only can avoid the wear deformation caused by the direct contact between the thread bushing 1a4 and the limiting block 2d, but also can improve the sealing performance of the connection portion between the thread bushing 1a4 and the thread groove 2c, and even if hydraulic oil leaks from the thread groove 2c, the hydraulic oil can be blocked by the first sealing ring 2b 1.
Further, in order to solve the technical problem of how to prevent impurities such as dust in the released air from entering the inside of the sealed shaft seat 2, as shown in fig. 4, 12 and 13, the following preferred technical solutions are provided: the second sealing ring 2b2 is sleeved in the first sleeve 2b, the second sealing ring 2b2 is sleeved on one side of the limiting block 2d facing the opening of the first sleeve 2b, and the second sealing ring 2b2 is tightly attached to one side of the limiting block 2d and the outer wall of the main shaft 1 a.
Specifically, the limiting block 2d in this embodiment is attached to the surface of the main shaft 1a, the gap between the first sleeve 2b and the main shaft 1a is filled with the second sealing ring 2b2, the second sealing ring 2b2 may be a "V" shaped sealing ring, the sealing lip of the second sealing ring 2b2 has good mobility and adaptability, and can be attached to the inner surface of the first sleeve 2b and the outer surface of the main shaft 1a, so as to prevent the hydraulic oil from leaking outwards when passing through the thread groove 2c and the first sealing ring 2b1, prevent the external air or dust from invading, ensure the hermetic sealing of the hermetic shaft seat 2, and simultaneously strengthen and seal the leakage path of the hydraulic oil.
Further, in order to solve the technical problem of how to seal the connection portion of the clutch piston 1c and the main shaft 1a, as shown in fig. 3, 10 and 11, the following preferred technical solutions are provided: the first sealing component 3 comprises a third sealing ring 3a, the third sealing ring 3a is fixedly arranged in a groove 1c1 formed in one side, facing the clutch piston cylinder 1b, of the clutch piston 1c, the third sealing ring 3a is coaxially arranged with the main shaft 1a, the size of the third sealing ring 3a is matched with that of the groove 1c1, and the surface of the third sealing ring 3a and the surface of the clutch piston 1c are located on the same horizontal plane.
Specifically, the first sealing assembly 3 in this embodiment seals the connection portion between the main shaft 1a and the clutch piston 1c on the premise of ensuring smooth movement of the clutch piston 1c, the groove 1c1 formed on the inner side of the main shaft 1a is matched with the size of the third sealing ring 3a, the third sealing ring 3a is tightly attached to the groove 1c1 when installed in the groove 1c1, the third sealing ring 3a can be tightly attached to the outer surface of the main shaft 1a, the third sealing ring 3a can be a "U" -shaped sealing ring, which is commonly used for manufacturing reciprocating seals in hydraulic systems, and is widely used for sealing hydraulic cylinders in engineering machinery, and can effectively ensure smooth movement of the clutch piston 1c on the main shaft 1a, and the surface of the third sealing ring 3a and the surface of the clutch piston 1c are on the same horizontal plane after the third sealing ring 3a is installed, the laminating of the inboard and clutch piston cylinder 1b of clutch piston 1c can be guaranteed, avoid first airtight subassembly 3 to influence the laminating of clutch piston 1c and clutch piston cylinder 1b, first airtight subassembly 3 sets up the sealed position inboard at clutch piston 1c, does not influence the outside part installation of clutch piston 1c, has practiced thrift outside space.
Further, in order to solve the technical problem of how to fixedly mount the fixing screw 3c to prevent the fixing screw from rotating in the groove 1c1, as shown in fig. 11, the following preferred technical solutions are provided: at least one group of limiting grooves 1c2 are formed in the outer side of a groove 1c1 of the clutch piston 1c, a limiting bump 3b matched with the limiting groove 1c2 in shape and size is arranged on a third sealing ring 3a of the first sealing component 3, the third sealing ring 3a penetrates through the limiting bump 3b through a fixing screw 3c to be fixedly connected with the clutch piston 1c, and the fixing screw 3c is installed in an embedded mode.
Specifically, the third seal ring 3a in this embodiment is circular, so as to avoid the problem that the third seal ring 3a is rotated in the groove 1c1 to cause the reduction of the sealing performance, the outer side of the groove 1c1 is provided with the limit groove 1c2, the third seal ring 3a is provided with limit protrusions 3b corresponding to the number and shape of the limit grooves 1c2, the limit protrusions 3b are limitedly installed in the limit groove 1c2 to ensure that the third seal ring 3a cannot rotate, the fixing screw 3c penetrates through the limit protrusions 3b to be fixedly installed with the clutch piston 1c to fix the installation position of the third seal ring 3a, so as to prevent the third seal ring 3a from falling off, and the fixing screw 3c is installed in an embedded manner to ensure that the first sealing component 3 does not affect the operation of the clutch piston cylinder 1b and the clutch piston 1 c.
Further, in order to solve the technical problem of how to seal the connection portion between the clutch piston 1c and the clutch piston cylinder 1b by the second sealing assembly 4, as shown in fig. 5, the following preferred technical solutions are provided: the circumferential side of the clutch piston 1c is provided with a ring groove 1c3, the second sealing component 4 is installed in the ring groove 1c3 in a limiting mode, the second sealing component 4 comprises a fourth sealing ring 4a, the fourth sealing ring 4a is sleeved on the ring groove 1c3, the size of the fourth sealing ring 4a is matched with that of the ring groove 1c3, the circumferential side of the fourth sealing ring 4a is provided with a plurality of tooth grooves 4a1, the tooth grooves 4a1 are provided, and the tooth grooves 4a1 divide the surface of the fourth sealing ring 4a into a plurality of D-shaped sealing rings.
Specifically, the second sealing assembly 4 in this embodiment is installed in a ring groove 1c3 formed on the circumferential side of the clutch piston 1c, and a tooth groove 4a1 formed on the circumferential side of the fourth sealing ring 4a divides the surface of the fourth sealing ring 4a into a plurality of "D" type sealing rings, so that it is ensured that the movement of the clutch piston 1c is not affected when the fourth sealing ring 4a contacts with the side wall of the clutch piston cylinder 1b, and a plurality of sealing rings are formed on the fourth sealing ring 4a, and when hydraulic oil leaks from the connecting portion between the clutch piston 1b and the clutch piston 1c and contacts with the fourth sealing ring 4a, the fourth sealing ring 4a can perform multiple blocking on the hydraulic oil, and it is ensured that the hydraulic oil cannot leak to the outside of the fourth sealing ring 4 a.
Further, in order to solve the technical problem of how the third closing assembly 5 seals the oil inlet 1a2, as shown in fig. 6, 9, 14 and 15, the following preferred technical solutions are provided: the third sealing assembly 5 comprises a second sleeve 5a, the second sleeve 5a is inserted into the oil inlet 1a2 of the main shaft 1a, a plurality of annular teeth 5a1 are arranged on the periphery of the second sleeve 5a, annular tooth grooves 1a5 which are matched with the annular teeth 5a1 on the second sleeve 5a in number, shape and size are arranged on the inner wall of the oil inlet 1a2, the annular teeth 5a1 are limited and installed in the annular tooth grooves 1a5, a sealing cover 5b is arranged at one outward end of the second sleeve 5a, the sealing cover 5b seals the connecting part of the second sleeve 5a and the oil inlet 1a2, and the sealing cover 5b is fixedly installed on the main shaft 1a through a second fixing bolt 5 c.
Specifically, the third sealing assembly 5 in this embodiment is inserted in the oil inlet 1a2 through the second sleeve 5a and connected to the main shaft 1a, the second sleeve 5a may be made of a rubber material, and it is ensured to be closely attached to the inside of the oil inlet 1a2, the annular tooth socket 1a5 provided in the oil inlet 1a2 is installed in a limiting manner with the annular tooth 5a1 on the second sleeve 5a, multiple blocking is performed on hydraulic oil entering the oil passage 1a1, blocking effects of the third sealing assembly 5 on leakage of the hydraulic oil are enhanced by increasing a leakage path of the hydraulic oil, the sealing cover 5b seals one outward end of the second sleeve 5a, the sealing cover 5b is fixedly installed on the main shaft 1a through the second fixing bolt 5c to seal the oil inlet 1a2, and fixes the position of the third sealing assembly 5, thereby ensuring the sealing effect of the third sealing assembly 5.
Further, in order to solve the technical problem of how to ensure the sealing performance of the mounting portion of the oil inlet nozzle 1a3 by the fourth sealing assembly 6, as shown in fig. 7, the following preferable technical solutions are provided: the fourth sealing component 6 comprises at least one fifth sealing ring 6a, the fifth sealing ring 6a is sleeved at the connecting position of the output end of the oil inlet nozzle 1a3 and the oil duct 1a1, the fifth sealing ring 6a is tightly attached to the oil inlet nozzle 1a3 and the oil duct 1a1, the fourth sealing component 6 further comprises a sealing sleeve 6b, the sealing sleeve 6b is sleeved on the outer surface of the oil inlet nozzle 1a3, and the sealing sleeve 6b can be attached to the shape of the mounting position of the oil inlet nozzle 1a3 and the main shaft 1 a.
Specifically, the fourth sealing assembly 6 in this embodiment includes a fifth sealing ring 6a disposed at the output end of the oil inlet nozzle 1a3, the fifth sealing ring 6a is disposed at the contact portion of the oil inlet nozzle 1a3 and the oil passage 1a1, and seals a gap at the contact position of the oil inlet nozzle 1a3 and the oil passage 1a1, so as to ensure that the hydraulic oil does not flow reversely to form leakage, the fourth sealing assembly 6 seals the outer side of the mounting portion of the oil inlet nozzle 1a3 and the oil passage 1a1 through a sealing sleeve 6b, the sealing sleeve 6b is made of rubber and can be fitted to the mounting portion of the oil inlet nozzle 1a3 and the main shaft 1a, so as to ensure that the inside does not generate leakage of the hydraulic oil, and prevent external air and dust from entering the connection portion of the oil inlet nozzle 1a3 and the oil passage 1a 1.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A sealing mechanism of a wet clutch of a press machine comprises the wet clutch (1) of the press machine, a clutch piston cylinder (1b) and a clutch piston (1c) are coaxially installed on a main shaft (1a) of the wet clutch (1) of the press machine, the clutch piston cylinder (1b) and the clutch piston (1c) convey hydraulic oil through an oil duct (1a1) arranged in the main shaft (1a), the oil duct (1a1) is coaxially arranged with the main shaft (1a), an oil inlet (1a2) is formed in one end of the main shaft (1a) through the oil duct (1a1), an oil inlet nozzle (1a3) is radially installed on the oil duct (1a1), and the wet clutch (1) of the press machine is sealed through the sealing mechanism arranged for each part;
the sealing mechanism is characterized by comprising a sealing shaft seat (2), wherein the sealing shaft seat (2) is arranged at a connecting part of a clutch piston cylinder (1b) and a main shaft (1a), the sealing shaft seat (2) is used for preventing the air from entering the connecting part of the clutch piston cylinder (1b) and the main shaft (1a), a first sealing component (3) is arranged at the connecting part of the main shaft (1a) and a clutch piston (1c), the first sealing component (3) is used for preventing hydraulic oil from leaking, a second sealing component (4) is arranged at the connecting part of the clutch piston cylinder (1b) and the clutch piston (1c), the second sealing component (4) is used for placing the hydraulic oil from leaking, a third sealing component (5) is arranged at an oil inlet (1a2), a fourth sealing component (6) is arranged at an oil inlet (1a3), and the third sealing component (5) and the fourth sealing component (6) are used for ensuring the sealing of an oil duct (1a 1).
2. The sealing mechanism of the wet clutch of the press machine according to claim 1, wherein the closed shaft seat (2) comprises a mounting plate (2a), the mounting plate (2a) is coaxially arranged with the main shaft (1a), the mounting plate (2a) is fixedly arranged at one side of the clutch piston cylinder (1b), a first sleeve (2b) is arranged on the mounting plate (2a), the first sleeve (2b) is coaxially arranged with the mounting plate (2a), the first sleeve (2b) is sleeved at the outer side of the main shaft (1a), a thread groove (2c) is arranged at one end of the inner side of the first sleeve (2b) close to the clutch piston cylinder (1b), a connecting part of the main shaft (1a) and the first sleeve (2b) is provided with a thread sleeve (1a4), the thread groove (2c) is spirally installed and connected with the main shaft (1a), and a limit block (2d) is arranged at the front end of the thread groove (2c), the limiting block (2d) and the thread groove (2c) have a certain space, and the inner wall of the limiting block (2d) is attached to the surface of the main shaft (1 a).
3. The seal mechanism of a wet clutch for a press machine according to claim 2, wherein the mounting plate (2a) is fixedly mounted to the clutch piston cylinder (1b) of the wet clutch for a press machine (1) by a first fixing bolt (2a1), the first fixing bolt (2a1) is inserted through the mounting plate (2a) to one side of the clutch piston cylinder (1b), and the first fixing bolt (2a1) has a plurality.
4. The sealing mechanism of a wet clutch of a press machine as claimed in claim 2, wherein the first sleeve (2b) is internally provided with a first sealing ring (2b1), the first sealing ring (2b1) is sleeved between the stop block (2d) and the thread groove (2c), the first sealing ring (2b1) is tightly attached to the thread groove (2c) and the thread sleeve (1a4), the first sealing ring (2b1) is coaxially arranged on the main shaft (1a), and the first sealing ring (2b1) is tightly attached to the connecting portion of the main shaft (1a) and the stop block (2 d).
5. The sealing mechanism of a wet clutch of a press machine as claimed in claim 2, wherein the second sealing ring (2b2) is sleeved in the first sleeve (2b), the second sealing ring (2b2) is sleeved on the side of the limiting block (2d) facing the opening of the first sleeve (2b), and the second sealing ring (2b2) is tightly attached to the side of the limiting block (2d) and the outer wall of the main shaft (1 a).
6. Sealing mechanism of a wet clutch of a press machine according to claim 1, characterized in that the first closing member (3) comprises a third sealing ring (3a), the third sealing ring (3a) is fixedly mounted in a groove (1c1) provided on the side of the clutch piston (1c) facing the clutch piston cylinder (1b), the third sealing ring (3a) is coaxially arranged with the main shaft (1a), the size of the third sealing ring (3a) is matched with the size of the groove (1c1), and the surface of the third sealing ring (3a) is at the same level as the surface of the clutch piston (1 c).
7. The sealing mechanism of the wet clutch of the press machine according to claim 6, wherein at least one set of limiting grooves (1c2) is arranged outside the groove (1c1) of the clutch piston (1c), a limiting bump (3b) matched with the limiting groove (1c2) in shape and size is arranged on the third sealing ring (3a) of the first sealing component (3), the third sealing ring (3a) penetrates through the limiting bump (3b) to be fixedly connected with the clutch piston (1c) through a fixing screw (3c), and the fixing screw (3c) is installed in an embedded manner.
8. The sealing mechanism of the wet clutch of the press machine according to claim 1, wherein the clutch piston (1c) is provided with a ring groove (1c3) on the periphery, the second sealing component (4) is installed in the ring groove (1c3) in a limiting manner, the second sealing component (4) comprises a fourth sealing ring (4a), the fourth sealing ring (4a) is sleeved on the ring groove (1c3), the size of the fourth sealing ring (4a) is matched with that of the ring groove (1c3), the periphery of the fourth sealing ring (4a) is provided with a plurality of tooth grooves (4a1), the tooth grooves (4a1) are provided with a plurality of tooth grooves, and the tooth grooves (4a1) divide the surface of the fourth sealing ring (4a) into a plurality of D-shaped sealing rings.
9. Sealing mechanism of a wet clutch for presses according to claim 1, characterised in that the third closing element (5) comprises a second sleeve (5a), the second sleeve (5a) being inserted in an oil inlet (1a2) of the main shaft (1a), a plurality of annular teeth (5a1) are arranged on the peripheral side of the second sleeve (5a), annular tooth grooves (1a5) which are matched with the annular teeth (5a1) on the second sleeve (5a) in number, shape and size are arranged on the inner wall of the oil inlet (1a2), the annular teeth (5a1) are installed in the annular tooth grooves (1a5) in a limiting way, a sealing cover (5b) is arranged at one outward end of the second sleeve (5a), the sealing cover (5b) seals the connection part of the second sleeve (5a) and the oil inlet (1a2), and the sealing cover (5b) is fixedly installed on the main shaft (1a) through a second fixing bolt (5 c).
10. The sealing mechanism of the wet clutch of the press machine according to claim 1, wherein the fourth sealing assembly (6) comprises at least one fifth sealing ring (6a), the fifth sealing ring (6a) is sleeved at a connecting portion of the output end of the oil inlet nozzle (1a3) and the oil passage (1a1), the fifth sealing ring (6a) is tightly attached to the oil inlet nozzle (1a3) and the oil passage (1a1), the fourth sealing assembly (6) further comprises a sealing sleeve (6b), the sealing sleeve (6b) is sleeved on the outer surface of the oil inlet nozzle (1a3), and the sealing sleeve (6b) can be attached to the shape of the mounting portion of the oil inlet nozzle (1a3) and the main shaft (1 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111037725.4A CN113565963B (en) | 2021-09-06 | 2021-09-06 | Sealing mechanism of wet clutch of press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111037725.4A CN113565963B (en) | 2021-09-06 | 2021-09-06 | Sealing mechanism of wet clutch of press machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113565963A true CN113565963A (en) | 2021-10-29 |
| CN113565963B CN113565963B (en) | 2024-04-30 |
Family
ID=78173547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111037725.4A Active CN113565963B (en) | 2021-09-06 | 2021-09-06 | Sealing mechanism of wet clutch of press machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113565963B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004239404A (en) * | 2003-02-07 | 2004-08-26 | Nsk Warner Kk | Wet multiple-disc clutch |
| JP2009019685A (en) * | 2007-07-11 | 2009-01-29 | Mitsubishi Heavy Ind Ltd | Power transmission device equipped with multiple-disc wet clutch |
| JP2011038615A (en) * | 2009-08-17 | 2011-02-24 | Sumitomo Heavy Industries Techno-Fort Co Ltd | Cooling oil quantity control device of wet type clutch brake in mechanical press |
| CN202971656U (en) * | 2012-12-10 | 2013-06-05 | 北京理工大学 | Clutch device for test platform with adjustable rated power |
| CN104154139A (en) * | 2014-07-25 | 2014-11-19 | 洛阳雷斯达传动有限公司 | Wet clutch |
| CN104279242A (en) * | 2014-08-08 | 2015-01-14 | 洛阳雷斯达传动有限公司 | Wet type clutch with pressure stabilizing function |
| CN206988325U (en) * | 2017-07-05 | 2018-02-09 | 第一拖拉机股份有限公司 | A kind of wet clutch lubrication flow governor motion |
-
2021
- 2021-09-06 CN CN202111037725.4A patent/CN113565963B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004239404A (en) * | 2003-02-07 | 2004-08-26 | Nsk Warner Kk | Wet multiple-disc clutch |
| JP2009019685A (en) * | 2007-07-11 | 2009-01-29 | Mitsubishi Heavy Ind Ltd | Power transmission device equipped with multiple-disc wet clutch |
| JP2011038615A (en) * | 2009-08-17 | 2011-02-24 | Sumitomo Heavy Industries Techno-Fort Co Ltd | Cooling oil quantity control device of wet type clutch brake in mechanical press |
| CN202971656U (en) * | 2012-12-10 | 2013-06-05 | 北京理工大学 | Clutch device for test platform with adjustable rated power |
| CN104154139A (en) * | 2014-07-25 | 2014-11-19 | 洛阳雷斯达传动有限公司 | Wet clutch |
| CN104279242A (en) * | 2014-08-08 | 2015-01-14 | 洛阳雷斯达传动有限公司 | Wet type clutch with pressure stabilizing function |
| CN206988325U (en) * | 2017-07-05 | 2018-02-09 | 第一拖拉机股份有限公司 | A kind of wet clutch lubrication flow governor motion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113565963B (en) | 2024-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5096207A (en) | Cartridge seal with dual lipped secondary seal | |
| CN108547953A (en) | A kind of sealing device for mixer | |
| CN113565963A (en) | Sealing mechanism of wet clutch of press machine | |
| CN204784290U (en) | Piston structure | |
| CN110748558B (en) | Dustproof rod end joint bearing | |
| JP2008298163A (en) | Direct drive screw device | |
| JP6566384B2 (en) | Sealing device | |
| CN200975488Y (en) | Sealing device used between horizontal rolls milling dynamic and static revolving part | |
| CN210422903U (en) | High-rotating-speed axial plunger pump | |
| CN101338818B (en) | Film bearing seal device | |
| CN201129460Y (en) | Dustproof type sealing means for main shaft of ball mill | |
| CN208417540U (en) | A kind of sealing device for mixer | |
| CN106763781A (en) | Rotate the liquid sealing structure of machinery | |
| CN111911478A (en) | Guide sleeve of hydraulic oil cylinder | |
| CN219045559U (en) | Speed reducer sealing device | |
| CN219472580U (en) | Bearing sealing structure with drainage groove at inner ring | |
| CN212273037U (en) | Sealing ring with good sealing effect | |
| CN219796099U (en) | Sealing device | |
| CN219529824U (en) | Elastic oil seal of high-elastic rubber shield | |
| CN218913732U (en) | Novel muddy water-proof oil seal | |
| CN209856276U (en) | Guide pin mechanism of disc brake | |
| CN220015841U (en) | Bearing sealing device | |
| CN206626166U (en) | A kind of main reducing gear of drive axle assembly input sealing structure | |
| CN213451610U (en) | Spiral magnetic force combined sealing structure for end face sealing | |
| CN112128403B (en) | S valve assembly, pumping system and engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |