CN216812344U

CN216812344U - Hydraulic cylinder seal assembly

Info

Publication number: CN216812344U
Application number: CN202121889490.7U
Authority: CN
Inventors: 程陆; 巩少君; 李文静
Original assignee: Shanghai Kaituo Mechanical And Electrical Equipment Co ltd
Current assignee: Shanghai Kaituo Mechanical And Electrical Equipment Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-06-24
Anticipated expiration: 2031-08-12

Abstract

The utility model provides a hydraulic cylinder sealing assembly, which belongs to the technical field of hydraulic cylinders and comprises a machine body assembly and an air sealing assembly, wherein a piston block is arranged in a cylinder body in a built-in mode, a piston rod is connected to the bottom of the piston rod, a blocking block is arranged on the inner wall of the cylinder body in a surrounding mode, an outlet of the cylinder body is arranged at the bottom of the cylinder body, and a working head is fixedly connected to the bottom of the piston rod. Through setting up oil groove and dust ring among the device, the oil groove is the embedding cell body interval of U type and encircles the inner wall that sets up in the leak protection oil blanket, the fluid of being sealed up by airtight ring can enter into and collect among the oil groove of leak protection oil blanket, the leak protection oil blanket of sealed embedding makes between leak protection oil blanket and the cylinder body an organic whole, can effectually prevent revealing of hydraulic oil, the dust ring that removes can play to strike off the dust that is stained with the piston rod surface and glues with other stains, and then prevent to bring into the outside debris of piston rod among the cylinder body, avoid reducing the inside piston rod lubricity of device, be applicable to hydraulic cylinder seal assembly's production and use.

Description

Hydraulic cylinder seal assembly

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a sealing assembly.

Background

The hydraulic cylinder seal is arranged on a hydraulic pump and a hydraulic motor shaft, so that working media are prevented from leaking out of a shell along the shaft and external dust is prevented from reversely invading into a machine body, and the existing hydraulic cylinder seal mechanism has the following defects when in use:

1. after the existing hydraulic cylinder sealing mechanism is used for a period of time, the abrasion is serious, components of a hydraulic system are easy to age, and the oil leakage phenomenon occurs, so that the consumption is increased, and the working environment of workers is influenced;

2. when the existing hydraulic cylinder sealing mechanism is used, fine ash stains can be naturally accumulated inside the hydraulic cylinder sealing mechanism, and frequent cleaning cannot be realized due to frequent use of the hydraulic cylinder sealing mechanism, so that the lubricating property of a piston inside the hydraulic cylinder sealing mechanism is reduced. Therefore, the existing hydraulic cylinder sealing equipment device needs to be upgraded and modified so as to overcome the existing problems and shortcomings, and the hydraulic cylinder sealing assembly is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that after the existing hydraulic cylinder sealing mechanism is used for a period of time, the abrasion is serious, components of a hydraulic system are easy to age, the oil leakage phenomenon occurs, the consumption is increased, the working environment of workers is influenced, fine ash stains naturally accumulate in the hydraulic cylinder sealing mechanism during use, and frequent cleaning cannot be realized due to frequent use of the hydraulic cylinder sealing mechanism, so that the lubricating property of a piston in the hydraulic cylinder sealing mechanism is reduced.

In order to achieve the purpose, the utility model provides the following technical scheme: a kind of hydraulic cylinder seal assembly, including fuselage assembly and airtight assembly, the airtight assembly is installed inside and outside the hydraulic cylinder assembly;

the machine body assembly comprises a cylinder body, a piston block, a piston rod, a position blocking block, a cylinder body outlet and a working head, wherein the piston block is internally installed in the cylinder body;

airtight subassembly includes leak protection oil blanket, oil groove, airtight circle, collar, suit outer loop, dusting circle and screw thread, and the leak protection oil blanket is installed in the cylinder body exit, and the oil groove embedding sets up in the inboard of leak protection oil blanket, and airtight circle is fixed bonds among the inner circle of leak protection oil blanket, and the collar encircles the outside bottom edge of setting in the leak protection oil blanket, and suit outer loop swing joint is in the outside of cylinder body, and dusting circle sets up in the bottom of suit outer loop, and the screw thread embedding sets up in the outside around the cylinder body export.

As a further scheme of the utility model: the leakage-proof oil seal is clamped and sealed with a mounting ring arranged on the outer side of the leakage-proof oil seal to be embedded and fixed on the inner side of the outlet of the cylinder body.

As a further scheme of the utility model: the embedding groove body interval that the oil groove is the U type encircles and sets up in the inner wall of leak protection oil blanket.

As a further scheme of the utility model: the airtight ring is made of elastic rubber, is arranged at the bottom of the oil groove and is fixedly bonded on the inner wall of the leakage-proof oil seal.

As a further scheme of the utility model: the diameter of the leak-proof oil seal is in transition fit with the piston rod.

As a further scheme of the utility model: and the inner side of the sleeved outer ring is provided with an internal thread which is connected with the thread in a matching way.

As a further scheme of the utility model: the inner side of the dust removing ring is provided with a through hole in transition fit with the piston rod.

The utility model has the beneficial effects that:

1. the piston rod sealing device is provided with the airtight ring, the airtight ring is made of elastic rubber, is arranged at the bottom of the oil groove and is fixedly bonded on the inner wall of the leakage-proof oil seal, the airtight ring surrounds and seals the piston rod, and most of oil is blocked in the cylinder body by the elastic airtight ring.

2. This kind of hydraulic cylinder seal assembly's advantage lies in being provided with the oil groove, and the embedding cell body interval that the oil groove is the U type encircles and sets up in the inner wall of leak protection oil blanket, and the fluid of being sealed up by airtight ring can enter into the oil groove of leak protection oil blanket and collect among, and the leak protection oil blanket of sealed embedding makes between leak protection oil blanket and the cylinder body one-tenth, can effectually prevent that inside hydraulic oil from revealing the outside and causing the pollution.

3. The hydraulic cylinder sealing assembly is provided with the dust removing ring, the inner side of the dust removing ring is provided with the through hole and is in transition fit with the piston rod, dust which is stained with the surface of the piston rod can be scraped off by other stains, foreign matters outside the piston rod can be prevented from being brought into the cylinder body, and the lubricating property of the piston rod inside the device is prevented from being reduced.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings which are needed to be used in the present invention will be briefly described below, it should be understood that the following drawings only illustrate some of the utility models of the present invention, and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is a schematic view of the sealing structure of the present invention.

FIG. 3 is a schematic view of the ash removal structure of the present invention.

FIG. 4 is a schematic view of the split structure of the present invention.

In FIGS. 1-4: 1-cylinder body, 2-piston block, 3-piston rod, 4-position-blocking block, 5-leakproof oil seal, 6-oil groove, 7-cylinder body outlet, 8-working head, 9-airtight ring, 10-mounting ring, 11-sleeved outer ring, 12-dust-removing ring and 13-screw thread.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.

Referring to fig. 1 to 4, in the present embodiment, a hydraulic cylinder sealing assembly includes a body assembly and an airtight assembly, the airtight assembly is installed inside and outside the hydraulic cylinder assembly;

the machine body assembly comprises a cylinder body 1, a piston block 2, a piston rod 3, a position blocking block 4, a cylinder body outlet 7 and a working head 8, wherein the piston block 2 is internally installed in the cylinder body 1, the piston rod 3 is connected to the bottom of the piston rod 3, the position blocking block 4 is arranged on the inner wall of the cylinder body 1 in a surrounding mode, the cylinder body outlet 7 is arranged at the bottom of the cylinder body 1, and the working head 8 is fixedly connected to the bottom of the piston rod 3;

airtight subassembly includes leak protection oil blanket 5, oil groove 6, airtight circle 9, collar 10, suit outer loop 11, dust ring 12 and screw thread 13 remove, leak protection oil blanket 5 is installed in cylinder body export 7 department, the embedding of oil groove 6 sets up in leak protection oil blanket 5's inboard, airtight circle 9 is fixed to be bonded among leak protection oil blanket 5's inner circle, collar 10 encircles and sets up in leak protection oil blanket 5's outside bottom edge, 11 swing joint in the outside of cylinder body 1 of suit outer loop, dust ring 12 sets up in the bottom of suit outer loop 11, the embedding of screw thread 13 sets up in the outside around cylinder body export 7.

Wherein, the sealed embedding of joint is fixed in the 7 departments of cylinder body export inboards together of the common joint of collar 10 that leak protection oil blanket 5 and its outside set up, and sealed embedding makes between leak protection oil blanket 5 and the cylinder body 1 become an organic whole, can effectually prevent that inside hydraulic oil from revealing the outside and causing the pollution.

Wherein, the embedding cell body interval that oil groove 6 is the U type encircles and sets up in the inner wall of leak protection oil blanket 5, and the fluid of being blocked up by airtight ring 9 can enter into among the oil groove 6 of leak protection oil blanket 5 and collect.

Wherein, airtight circle 9 is the elastic rubber material, and sets up in the bottom of oil groove 6 and fixed bonding in the inner wall of leak protection oil blanket 5, and airtight circle 9 surrounds the shutoff to piston rod 3, has elastic airtight circle 9 with most fluid separation in the inside of cylinder body 1.

Wherein, the diameter of the leak-proof oil seal 5 is in transition fit with the piston rod 3.

Wherein, the inside of suit outer loop 11 is provided with the internal thread of being connected with screw 13 is supporting, and the dismantlement of activity can be carried out to suit outer loop 11, and it is comparatively convenient to change new and clean.

The inner side of the dust removing ring 12 is provided with a through hole which is in transition fit with the piston rod 3, so that dust adhered to the surface of the piston rod 3 can be scraped off by other stains, and foreign matters outside the piston rod 3 can be prevented from being brought into the cylinder body 1.

The working principle is as follows:

firstly, when the hydraulic cylinder sealing assembly of the utility model is used, the bottom of the cylinder body 1 is sleeved and connected with the sleeved outer ring 11, so that the inner side of the sleeved outer ring 11 is in threaded connection with the thread 13 on the outer edge of the cylinder outlet 7, after the locking and fixing, the ash removing ring 12 is sleeved and connected with the outer side of the cylinder outlet 7, and after the external power supply is connected and started, the inner piston block 2 pushes the piston rod 3 to push the piston rod 7 to push out towards the cylinder outlet 7, so that the piston rod 3 is slowly pushed out from the anti-leakage oil seal 5 fixedly arranged in the cylinder outlet 7, and then the ash removing ring 12 at the cylinder outlet 7 extends outwards, and the inner airtight ring 9 of the anti-leakage oil seal 5 seals and sleeves the oil seal, so that most of hydraulic oil pushing the piston rod 3 is blocked by the airtight ring 9, thereby avoiding the phenomenon that the oil is brought out of the cylinder outlet 7 to cause oil leakage inside in the process of pushing the piston rod 3, and the oil liquid blocked by the airtight ring 9 will enter into the oil groove 6 of the leak-proof oil seal 5, prevent to reveal outside and cause the pollution, and stop promoting when the bottom of the piston block 2 contacts with stopping the position block 4, the fluid cylinder retracts again, make the piston block 2 drive the piston rod 3 to retract to the inside of cylinder block 1, the piston rod 3 and dust-removing ring 12 of the bottom of the suit outer loop 11 carry on the contact of the outer wall in the course of retracting, the dust-removing ring 12 can scrape off the dust that the surface of the piston rod 3 is stained with other stains, can also avoid bringing the foreign matter of the outside into the cylinder block 1.

Claims

1. A kind of hydraulic cylinder seal assembly, including fuselage assembly and airtight assembly, the airtight assembly is installed inside and outside the hydraulic cylinder assembly;

the method is characterized in that: the machine body assembly comprises a cylinder body (1), a piston block (2), a piston rod (3), a position blocking block (4), a cylinder body outlet (7) and a working head (8), wherein the piston block (2) is internally installed in the cylinder body (1), the piston rod (3) is connected to the bottom of the piston rod (3), the position blocking block (4) is arranged on the inner wall of the cylinder body (1) in a surrounding manner, the cylinder body outlet (7) is arranged at the bottom of the cylinder body (1), and the working head (8) is fixedly connected to the bottom of the piston rod (3);

airtight subassembly includes leak protection oil blanket (5), oil groove (6), airtight circle (9), collar (10), suit outer ring (11), remove grey circle (12) and screw thread (13), install in cylinder body export (7) department leak protection oil blanket (5), oil groove (6) embedding sets up in the inboard of leak protection oil blanket (5), airtight circle (9) are fixed to be bonded among the inner circle of leak protection oil blanket (5), collar (10) encircle to set up in the outside bottom edge of leak protection oil blanket (5), suit outer ring (11) swing joint is in the outside of cylinder body (1), remove grey circle (12) and set up in the bottom of suit outer ring (11), screw thread (13) embedding sets up in the outside around cylinder body export (7).

2. The hydraulic cylinder seal assembly of claim 1, wherein: the leakage-proof oil seal (5) and a mounting ring (10) arranged on the outer side of the leakage-proof oil seal are clamped together, sealed and embedded into the inner side of the cylinder body outlet (7).

3. The hydraulic cylinder seal assembly of claim 1, wherein: the embedded groove body of the U-shaped oil groove (6) is arranged on the inner wall of the leakage-proof oil seal (5) in an encircling mode at intervals.

4. The hydraulic cylinder seal assembly of claim 1, wherein: the airtight ring (9) is made of elastic rubber, is arranged at the bottom of the oil groove (6) and is fixedly bonded on the inner wall of the leakage-proof oil seal (5).

5. The hydraulic cylinder seal assembly of claim 1, wherein: the diameter of the leak-proof oil seal (5) is in transition fit with the piston rod (3).

6. The hydraulic cylinder seal assembly of claim 1, wherein: the inner side of the sleeved outer ring (11) is provided with an internal thread which is connected with the thread (13) in a matching way.

7. The hydraulic cylinder seal assembly of claim 1, wherein: the inner side of the dust removing ring (12) is provided with a through hole which is in transition fit with the piston rod (3).