CN218862985U

CN218862985U - Wear-resistant piston for loader

Info

Publication number: CN218862985U
Application number: CN202223071731.4U
Authority: CN
Inventors: 许跃进
Original assignee: Fujian Yuesheng Machinery Co ltd
Current assignee: Fujian Yuesheng Machinery Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-04-14
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a loader is with piston that resistance to wears relates to piston technical field, for solving current piston needs reciprocating type motion, and the sealing ring department that leads to its piston outer wall wears because of long-time friction easily to lead to piston life to descend, influence the problem of user normal use. The outer wall of the piston body is provided with three ring grooves, oil seals are arranged inside the ring grooves at the upper end and the lower end, and a sealing ring is arranged inside the ring groove in the middle; further comprising: the piston comprises a piston body, an oil storage cavity, an oil passage, a drip nozzle and a plurality of oil outlets, wherein the piston body is provided with an upper annular groove and a lower annular groove; the piston is characterized in that a piston connecting hole is formed in the middle of the outer wall of the upper surface of the piston body, a piston rod is arranged at one end of the piston connecting hole, and a piston rod bushing is arranged on the outer wall of the piston rod.

Description

Wear-resistant piston for loader

Technical Field

The utility model relates to a piston technical field specifically is a loader is with piston that resistance to wears.

Background

The loader is common engineering machinery equipment in our life, and is mainly widely used for earthwork construction machinery of road, building, water and electricity, mine and other construction projects, the main parts of the loader comprise an engine, a torque converter, a gearbox, a front drive axle and a rear drive axle, and the loader mainly shovels by a hydraulic oil cylinder; the oil cylinder is also called hydraulic cylinder, and is a necessary component of hydraulic equipment, and the hydraulic cylinder is basically composed of a cylinder barrel, a cylinder cover, a piston rod, a sealing device and the like.

The loader drives the mechanical arm to construct by the reciprocating movement of the piston of the hydraulic oil cylinder, the load is heavy, and the sealing ring on the outer wall of the piston is easy to wear due to long-time friction, so that the service life of the piston is shortened, and the normal use of a user is influenced; thus, the existing requirements are not met, for which we propose a wear resistant piston for loaders.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a loader is with piston that resistance to wears to the current piston that proposes in solving above-mentioned background art needs reciprocating type to move, leads to the sealing ring department of its piston outer wall to wear and tear because of long-time friction easily, thereby leads to piston life to descend, influences the problem of user's normal use.

In order to achieve the above object, the utility model provides a following technical scheme: a wear resistant piston for a loader comprising: the hydraulic cylinder comprises a hydraulic cylinder body and a piston body, wherein three ring grooves are formed in the outer wall of the piston body, oil seals are arranged inside the ring grooves at the upper end and the lower end, and sealing rings are arranged inside the ring grooves in the middle;

further comprising:

the oil storage cavity is arranged at the lower end of the embedded oil port, an oil duct used for connecting the middle annular groove is arranged at the lower end of the oil storage cavity, and a drip nozzle is arranged at the position, close to the middle annular groove, of the oil duct.

Preferably, one end of the piston body is fixedly connected with a piston rod, the piston rod is fixedly connected with a piston rod bushing, and the other end of the piston body is fixedly connected with a piston end. Specifically, a piston connecting hole is formed in the middle of the outer wall of the upper surface of the piston body, and one end of the piston rod is fixedly arranged in the piston connecting hole.

Preferably, the upper end and the lower end of the hydraulic oil cylinder body are both provided with a cylinder body sealing cover in a threaded manner, the inner wall of the cylinder body sealing cover positioned at the upper end is provided with an end part dustproof oil seal, and one end of the end part dustproof oil seal is provided with an O-shaped ring.

Preferably, the outer walls of the two sides of the cylinder body sealing cover positioned at the upper end are respectively provided with a first oil inlet and a first oil outlet, and the outer walls of the two sides of the cylinder body sealing cover positioned at the lower end are respectively provided with a second oil inlet and a second oil outlet.

Preferably, a piston clamping groove is formed in the cylinder body sealing cover, and two sides of the piston clamping groove are respectively communicated with the second oil inlet and the second oil outlet.

Preferably, one end of each cylinder body sealing cover is provided with a connecting ring.

Preferably, the inner wall of the connecting ring is provided with a dustproof wear-resistant ring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an upper surface at the piston body sets up the effect that embedded hydraulic fluid port played the oil feed, embedded hydraulic fluid port is embedded, make it can not influence the normal piston motion of outside piston rod, in normal injection hydraulic fluid in-process, part hydraulic fluid can enter into to the oil storage intracavity through embedded hydraulic fluid port and carry out the deposit, the oil storage chamber relies on the oil duct of predetermineeing to communicate with the annular at middle part, make the oil body in the oil storage intracavity flow into to middle part annular department through the oil duct, the drip nozzle is used for playing the effect of dropping liquid, make the oil body pour into to the sealing ring in the middle part annular through the mode of dropping liquid in the oil duct on, make the sealing ring outer wall be infected with one deck oil body, reach lubricated effect, because for the dropping liquid formula, its injection is slow, the injection volume is few, can avoid taking place the too much problem of oil body, and all be provided with the oil blanket at upper and lower both ends department, can avoid the oil body to overflow from top to bottom, improve the leakproofness, above-mentioned structure can reduce the coefficient of friction of piston between reciprocating motion in-process and the cylinder body inner wall, make the life of piston obtain improving.

2. The piston connecting hole is used for being combined with the piston rod, so that the piston rod can drive the piston to perform reciprocating motion, the piston rod bushing is used for improving the protection performance of the piston rod, the piston rod bushing can be in limiting clamping with the end dust-proof oil seal at the sealing cover of the cylinder body, the end sealing performance of the piston rod bushing is improved, the piston rod bushing can improve the abrasion resistance of the piston rod bushing, and the service life of the piston is longer.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the hydraulic cylinder body of the present invention;

fig. 3 is a schematic view of a partial structure of the piston body of the present invention;

fig. 4 is a schematic view of the local structure of the embedded oil port of the present invention;

in the figure: 1. a hydraulic cylinder body; 2. a cylinder body sealing cover; 3. a piston rod bushing; 4. a connecting ring; 5. the end part is dustproof and oil-sealed; 6. a first oil inlet; 7. a first oil outlet; 8. a second oil inlet; 9. a second oil outlet; 10. a piston clamping groove; 11. a piston rod; 12. a piston body; 13. a piston end; 14. a ring groove; 15. oil sealing; 16. a seal ring; 17. a piston connecting hole; 18. an oil port is embedded; 19. an oil storage chamber; 20. an oil passage; 21. a drip nozzle; 22. an O-shaped ring; 23. dustproof wear ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, the present invention provides an embodiment: a wear resistant piston for a loader comprising: the hydraulic oil cylinder comprises a hydraulic oil cylinder body 1 and a piston body 12, wherein three annular grooves 14 are formed in the outer wall of the piston body 12, oil seals 15 are arranged inside the annular grooves 14 at the upper end and the lower end, and a sealing ring 16 is arranged inside the annular groove 14 at the middle end;

further comprising:

the inner embedded oil port 18 is arranged on two sides of the outer wall of the upper surface of the piston body 12, an oil storage cavity 19 is arranged at the lower end of the inner embedded oil port 18, an oil duct 20 used for being connected with the middle annular groove 14 is arranged at the lower end of the oil storage cavity 19, a drip nozzle 21 is arranged at the position, close to the middle annular groove 14, of the oil duct 20, specifically, the drip nozzle 21 is funnel-shaped, is large in upper portion and small in lower portion, and can slow down the injection amount and the injection efficiency of oil bodies.

Referring to fig. 2 and 3, a piston connection hole 17 is formed in a middle position of an outer wall of an upper surface of the piston body 12, the piston connection hole 17 is fixedly connected with the piston rod 11 in a threaded insertion manner, the other end of the piston rod 11 is fixedly connected to the piston rod bushing 3 in an integrally formed manner, and a piston end 13 is disposed at the other end of the piston body 12 in a threaded connection manner. The piston connecting hole 17 is used for being combined with the piston rod 11, so that the piston rod 11 can drive the piston to perform reciprocating motion, the piston rod bushing 3 is used for improving the protection performance of the piston rod 11, the piston rod bushing 3 can be clamped with the end dustproof oil seal 5 at the sealing cover 2 of the cylinder body in a limiting manner, the end sealing performance of the piston rod bushing is improved, the wear resistance of the piston rod bushing 3 can be improved, and the service life of the piston is longer.

Referring to fig. 1 and 2, the upper end and the lower end of the hydraulic cylinder body 1 are both fixedly provided with a cylinder body sealing cover 2 in a threaded manner, the inner wall of the cylinder body sealing cover 2 positioned at the upper end is provided with an end portion dustproof oil seal 5, one end of the end portion dustproof oil seal 5 is provided with an O-ring 22, the end portion dustproof oil seal 5 is used for achieving the effects of preventing dust and preventing internal oil from leaking, and the O-ring 22 is used for achieving the effect of limiting and sealing.

Referring to fig. 1 and 2, the outer walls of two sides of the cylinder sealing cover 2 at the upper end are respectively provided with a first oil inlet 6 and a first oil outlet 7, the outer walls of two sides of the cylinder sealing cover 2 at the lower end are respectively provided with a second oil inlet 8 and a second oil outlet 9, the first oil inlet 6 is used for feeding oil to drive the piston to move towards the other end, the first oil outlet 7 is used for discharging oil, and the second oil inlet 8 is used for driving the piston to reset, so that the piston can be driven by oil bodies at two ends to perform reciprocating motion.

Referring to fig. 1 and 2, a piston clamping groove 10 is formed in a cylinder sealing cover 2, two sides of the piston clamping groove 10 are respectively communicated with a second oil inlet 8 and a second oil outlet 9, the piston clamping groove 10 is used for clamping a piston end 13 to achieve the effect of limiting the displacement of a piston, and preferably, a buffer pad can be additionally arranged in the piston clamping groove 10 to achieve the effect of reducing the impact force of the piston and prolong the service life of the piston clamping groove 10.

Referring to fig. 1, one end of the cylinder sealing cover 2 is provided with a connecting ring 4, and the connecting ring 4 is used for connecting with other parts of the loader.

Referring to fig. 1, the inner wall of the connection ring 4 is provided with a dustproof wear-resistant ring 23, and the dustproof wear-resistant ring 23 plays a role in limiting and preventing dust, thereby ensuring that the sealing performance at the connection ring 4 is improved.

The working principle is as follows: when the oil-feeding type piston is used, the embedded oil port 18 is arranged on the upper surface of the piston body 12 to play an oil-feeding effect, the embedded oil port 18 is embedded, so that the normal piston motion of the external piston rod 11 is not influenced, in the normal hydraulic oil feeding process, part of hydraulic oil enters the oil storage cavity 19 through the embedded oil port 18 to be stored, the oil storage cavity 19 is communicated with the ring groove 14 in the middle through a preset oil duct 20, so that oil in the oil storage cavity 19 can flow into the ring groove 14 in the middle through the oil duct 20, the drip nozzle 21 is used for playing a liquid dripping effect, so that the oil in the oil duct 20 is fed onto the sealing ring 16 in the ring groove 14 in the middle through a liquid dripping mode, a layer of oil is stained on the outer wall of the sealing ring 16, the lubricating effect is achieved, the problem of excessive oil can be avoided due to the liquid dripping type, the oil feeding is slow in feeding, the oil seals 15 are arranged at the upper end and the lower end, the structure can reduce the friction coefficient between the piston and the inner wall of the cylinder body in the reciprocating motion process, so that the service life of the piston is prolonged, the piston connecting hole 17 is used for being combined with the piston rod 11, so that the piston rod 11 can drive the piston to perform reciprocating motion, the piston rod bushing 3 is used for improving the protection performance of the piston rod 11, the piston rod bushing 3 can be in limit clamping with the end part dustproof oil seal 5 at the position of the cylinder body sealing cover 2, so that the end part sealing performance of the piston rod bushing is improved, the wear resistance of the piston rod bushing 3 can be improved, the service life of the piston is longer, the end part dustproof oil seal 5 is used for preventing dust and preventing the internal oil body from leaking, the O-shaped ring 22 is used for achieving the effect of limit sealing, the piston clamping groove 10 is used for clamping the piston end 13 to achieve the effect of limiting the displacement of the piston, the connecting ring 4 is used for achieving the effect of being connected with other parts of the loader, and the dustproof wear-resisting ring 23 achieves the limiting and dustproof effects, so that the sealing performance of the connecting ring 4 is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The wear-resistant piston for the loader comprises a hydraulic oil cylinder body (1) and a piston body (12), wherein three ring grooves (14) are formed in the outer wall of the piston body (12), oil seals (15) are arranged inside the ring grooves (14) at the upper end and the lower end, and a sealing ring (16) is arranged inside the ring groove (14) in the middle;

the method is characterized in that: further comprising:

the oil storage device comprises an embedded oil port (18) and is arranged on two sides of the outer wall of the upper surface of the piston body (12), an oil storage cavity (19) is arranged at the lower end of the embedded oil port (18), an oil duct (20) used for connecting a middle ring groove (14) is arranged at the lower end of the oil storage cavity (19), and a drip nozzle (21) is arranged at the position, close to the middle ring groove (14), of the oil duct (20).

2. A wear-resistant piston for a loader according to claim 1, characterized in that: one end of the piston body (12) is fixedly connected with a piston rod (11), the piston rod (11) is fixedly connected with a piston rod bushing (3), and the other end of the piston body (12) is fixedly connected with a piston end (13).

3. A wear-resistant piston for a loader according to claim 1, characterized in that: the hydraulic cylinder is characterized in that cylinder body sealing covers (2) are fixedly mounted at the upper end and the lower end of the hydraulic cylinder body (1), an end portion dustproof oil seal (5) is arranged on the inner wall of each cylinder body sealing cover (2) located at the upper end, and an O-shaped ring (22) is arranged at one end of each end portion dustproof oil seal (5).

4. A wear-resistant piston for a loader according to claim 3, characterized in that: the outer walls of two sides of the cylinder body sealing cover (2) positioned at the upper end are respectively provided with a first oil inlet (6) and a first oil outlet (7), and the outer walls of two sides of the cylinder body sealing cover (2) positioned at the lower end are respectively provided with a second oil inlet (8) and a second oil outlet (9).

5. The wear-resistant piston for a loader of claim 4, characterized in that: a piston clamping groove (10) is formed in the cylinder body sealing cover (2) at the lower end, and two sides of the piston clamping groove (10) are communicated with a second oil inlet (8) and a second oil outlet (9) respectively.

6. A wear-resistant piston for a loader as set forth in claim 3, wherein: two the one end of the sealed lid of cylinder body (2) all is provided with go-between (4), the inner wall of go-between (4) is provided with dustproof wear-resisting circle (23).