CN213540923U

CN213540923U - Hydraulic cylinder prevents leaking device

Info

Publication number: CN213540923U
Application number: CN202022626873.7U
Authority: CN
Inventors: 童绍荣
Original assignee: Luzhou Tuojiang Hydraulic Parts Co ltd
Current assignee: Luzhou Tuojiang Hydraulic Parts Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-06-25
Anticipated expiration: 2030-11-13

Abstract

The utility model belongs to the technical field of hydraulic cylinder, especially, prevent leaking device for hydraulic cylinder, including the hydro-cylinder, the inside slidable mounting of hydro-cylinder has the piston, the top fixed mounting of piston has the piston rod, fixed mounting has the sealing washer on the inner wall of hydro-cylinder, the oil pipe is installed to bottom one side of hydro-cylinder, the one end flange joint who advances the oil pipe has the connecting pipe, the connecting pipe is kept away from advance the one end of oil pipe and be connected with the seal box, the seal box is kept away from advance one side of oil pipe and be connected with the notes oil pipe, the bottom of seal box is inside to be close to one side of notes oil pipe is rotated and is installed the closing plate, the closing plate is kept away from one side fixed. The utility model discloses the simple operation prevents the leakage device through plus for the seepage condition appears in hydraulic cylinder its junction in the course of the work, leads to polluted environment and wasting of resources.

Description

Hydraulic cylinder prevents leaking device

Technical Field

The utility model relates to a hydraulic cylinder technical field especially relates to a hydraulic cylinder prevents leaking device.

Background

The large hydraulic oil cylinder is an instrument which can convert hydraulic energy into mechanical energy and can do linear motion repeatedly, is widely used in factories, has simple structure and stable operation, and can stably complete reciprocating linear motion during working.

However, in the prior art, in the working process of the hydraulic cylinder, the oil filling port joint of the hydraulic cylinder usually leaks, which not only causes resource waste but also pollutes the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a hydraulic cylinder leakage-proof device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a hydraulic cylinder leakage-proof device comprises a cylinder barrel, a piston is slidably mounted inside the cylinder barrel, a piston rod is fixedly mounted at the top of the piston, a sealing ring is fixedly mounted on the inner wall of the cylinder barrel, an oil inlet pipe is mounted at one side of the bottom end of the cylinder barrel, a connecting pipe is connected to one end of the oil inlet pipe in a flange manner, a seal box is connected to one end of the connecting pipe away from the oil inlet pipe, an oil filling pipe is connected to one side of the seal box away from the oil inlet pipe, a sealing plate is rotatably mounted at one side of the bottom end of the seal box close to the oil filling pipe, two first springs are fixedly mounted at one side of the sealing plate away from the oil filling pipe, a connecting rod is hinged to the same side of the two springs, a chute is formed in the inner wall of the bottom, the utility model discloses a sealing box, including the connecting rod, gag lever post, return pipe, seal box, connecting pipe, arc protection casing, the surperficial slip cover of gag lever post is equipped with the slider, the top of slider with the bottom of connecting rod is articulated each other, the surface cover of gag lever post is equipped with the second spring, the back flow is installed to the bottom of spout, and the back flow runs through the seal box, the bottom fixed mounting of connecting pipe has arc protection casing, one side intercommunication of arc protection casing has defeated oil pipe, defeated oil pipe keeps away from.

Preferably, the outer wall of the piston rod is slidably connected with the inner wall of the sealing ring.

Preferably, an oil inlet is formed in one side of the bottom end of the oil cylinder barrel, and an oil inlet pipe is fixedly mounted in the oil inlet.

Preferably, the oil inlet pipe and the connecting pipe are fixedly provided with flanges, and the two flanges are fixed through bolts.

Preferably, the connecting rod is located between the two first springs.

Preferably, one end of the second spring is fixedly connected with one side of the sliding block, and the other end of the second spring is fixedly connected with the inner wall of one side of the sliding groove.

Compared with the prior art, the beneficial effects of the utility model are that: when in use, the hydraulic oil is conveyed into the seal box through the oil filling pipe, the hydraulic oil extrudes the seal plate to enable the seal plate to rotate and simultaneously drive the connecting rod hinged to one side of the seal plate to rotate, so that the slide block at the bottom end of the connecting rod slides leftwards to block the upper port of the return pipe, the seal box is communicated with the connecting pipe, then the hydraulic oil enters the oil cylinder barrel through the oil filling pipe to work, after the work, the right side of the seal plate does not apply pressure any more, the seal plate is enabled to restore to the initial position under the action of the first spring, the oil filling pipe is blocked again, the return pipe is conducted at the same time, the hydraulic oil in the oil cylinder barrel is discharged from the return pipe, meanwhile, if hydraulic oil leakage occurs at the joint of the oil filling pipe and the connecting pipe, the hydraulic oil can fall on the arc, preventing the environment pollution and the resource waste.

The utility model discloses the simple operation prevents the leakage device through plus for the seepage condition appears in hydraulic cylinder its junction in the course of the work, leads to polluted environment and wasting of resources.

Drawings

FIG. 1 is a schematic sectional view of the front view of the present invention;

FIG. 2 is a partially enlarged view of the portion A in FIG. 1;

fig. 3 is a side view of the seal box of the present invention.

In the figure: 1. an oil cylinder barrel; 2. a piston; 3. a piston rod; 4. a seal ring; 5. an oil inlet pipe; 6. a connecting pipe; 7. a sealing box; 8. an oil filling pipe; 9. a sealing plate; 10. a first spring; 11. a connecting rod; 12. a limiting rod; 13. a slider; 14. a second spring; 15. a return pipe; 16. an arc-shaped protective cover; 17. an oil delivery pipe; 18. a flange plate.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a hydraulic oil cylinder leakage-proof device comprises an oil cylinder barrel 1, a piston 2 is slidably mounted inside the oil cylinder barrel 1, a piston rod 3 is welded at the top of the piston 2, a sealing ring 4 is welded on the inner wall of the oil cylinder barrel 1, an oil inlet pipe 5 is mounted at one side of the bottom end of the oil cylinder barrel 1, a connecting pipe 6 is flange-connected at one end of the oil inlet pipe 5, a seal box 7 is connected at one end of the connecting pipe 6 far away from the oil inlet pipe 5, an oil filling pipe 8 is connected at one side of the seal box 7 far away from the oil inlet pipe 5, a sealing plate 9 is rotatably mounted at one side of the inside of the bottom end of the seal box 7 close to the oil filling pipe 8, two first springs 10 are welded at one side of the sealing plate 9 far away from the oil filling pipe 8, a connecting rod 11 is hinged with the same side of the, the top of the sliding block 13 is hinged with the bottom end of the connecting rod 11, the surface of the limiting rod 12 is sleeved with a second spring 14, the bottom of the sliding groove is provided with a return pipe 15, the return pipe 15 penetrates through the seal box 7, the bottom of the connecting pipe 6 is welded with an arc-shaped protective cover 16, one side of the arc-shaped protective cover 16 is communicated with an oil conveying pipe 17, and one end, away from the arc-shaped protective cover 16, of the oil conveying pipe 17 is communicated with the return pipe 15;

the outer wall of piston rod 3 and the inner wall sliding connection of sealing washer 4, the oil inlet has been seted up to bottom one side of oil cylinder barrel 1, the welding has into oil pipe 5 in the oil inlet, the one end that advances oil pipe 5 and the one end of connecting pipe 6 all have welded ring flange 18, pass through the bolt fastening between two ring flanges 18, connecting rod 11 is located between two first springs 10, the one end of second spring 14 and the one side welding of slider 13, the other end of second spring 14 and one side inner wall welding of spout, the utility model discloses the simple operation prevents through plus and reveals the device for hydraulic cylinder leakage condition appears in its junction in the course of the work, leads to polluted environment and wasting of resources.

The working principle is as follows: when the hydraulic oil injection device is used, hydraulic oil is conveyed into the seal box 7 through the oil injection pipe 8, the hydraulic oil extrudes the seal plate 9 to enable the seal plate 9 to rotate and simultaneously drive the connecting rod 11 with one side hinged to the seal box to rotate, so that the slide block 13 at the bottom end of the connecting rod 11 slides leftwards to block the upper port of the return pipe 15, the seal box 7 is communicated with the connecting pipe 6, then the hydraulic oil enters the oil cylinder barrel 1 through the oil inlet pipe 5 to work, after the completion, no pressure is applied to the right side of the seal plate 9, the seal plate 9 is restored to the initial position under the action of the first spring 10 to block the oil injection pipe 8 again, the return pipe 15 is conducted at the same time, the hydraulic oil in the oil cylinder barrel 1 is discharged from the return pipe 15, if hydraulic oil leakage occurs at the joint of the oil inlet pipe 5 and the connecting pipe 6, the hydraulic oil drops, make the hydraulic oil of seepage can not reveal in the external world, prevent polluted environment and wasting of resources, the utility model discloses the simple operation prevents the leakage device through plus for the seepage condition appears in hydraulic cylinder its junction in the course of the work, leads to polluted environment and wasting of resources.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic cylinder prevents leaking device, includes oil cylinder section (1), its characterized in that: the oil cylinder is characterized in that a piston (2) is slidably mounted inside the oil cylinder barrel (1), a piston rod (3) is fixedly mounted at the top of the piston (2), a sealing ring (4) is fixedly mounted on the inner wall of the oil cylinder barrel (1), an oil inlet pipe (5) is mounted on one side of the bottom end of the oil cylinder barrel (1), a connecting pipe (6) is connected to one end of the oil inlet pipe (5) in a flange mode, a sealing box (7) is connected to one end, away from the oil inlet pipe (5), of the connecting pipe (6), an oil filling pipe (8) is connected to one side, away from the oil inlet pipe (5), of the sealing box (7), a sealing plate (9) is rotatably mounted on one side, close to the oil filling pipe (8), of the sealing plate (9) away from one side of the oil filling pipe (8), two first springs (10) are fixedly mounted on one side, away from the oil, the spout has been seted up on the bottom inner wall of seal box (7), fixed mounting has gag lever post (12) between the spout both sides inner wall, the surface slip cover of gag lever post (12) is equipped with slider (13), the top of slider (13) with the bottom of connecting rod (11) is articulated each other, the surface cover of gag lever post (12) is equipped with second spring (14), back flow (15) are installed to the bottom of spout, and back flow (15) run through seal box (7), the bottom fixed mounting of connecting pipe (6) has arc protection casing (16), one side intercommunication of arc protection casing (16) has defeated oil pipe (17), defeated oil pipe (17) are kept away from the one end of arc protection casing (16) with back flow (15) intercommunication.

2. A leak-proof device for a hydraulic cylinder according to claim 1, characterized in that: the outer wall of the piston rod (3) is in sliding connection with the inner wall of the sealing ring (4).

3. A leak-proof device for a hydraulic cylinder according to claim 1, characterized in that: an oil inlet is formed in one side of the bottom end of the oil cylinder barrel (1), and an oil inlet pipe (5) is fixedly installed in the oil inlet.

4. A leak-proof device for a hydraulic cylinder according to claim 1, characterized in that: and one end of the oil inlet pipe (5) and one end of the connecting pipe (6) are fixedly provided with flange plates (18), and the two flange plates (18) are fixed through bolts.

5. A leak-proof device for a hydraulic cylinder according to claim 1, characterized in that: the connecting rod (11) is positioned between the two first springs (10).

6. A leak-proof device for a hydraulic cylinder according to claim 1, characterized in that: one end of the second spring (14) is fixedly connected with one side of the sliding block (13), and the other end of the second spring (14) is fixedly connected with the inner wall of one side of the sliding groove.