CN210265647U

CN210265647U - Piston for elevator with small friction coefficient

Info

Publication number: CN210265647U
Application number: CN201921212625.9U
Authority: CN
Inventors: 李春林
Original assignee: Taicang Wopute Machinery Technology Co ltd
Current assignee: Taicang Wopute Machinery Technology Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-04-07
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a little piston for elevator of coefficient of friction relates to the piston field for elevator, for solving among the prior art current piston mostly whole face and inner tube inner wall contact, coefficient of friction is big, the fast problem of wearing and tearing. The piston rod connecting sleeve is arranged on the outer surface of one end of the upper main body of the piston, two bolt holes are formed in the outer surface of the piston rod connecting sleeve, the positions of the bolt holes are corresponding to each other, oil inlets are formed in the outer surface of one end of the upper main body of the piston, six oil inlets are formed in the outer surface of one end of the upper main body of the piston, a first sealing check ring is arranged on the side surface of the upper main body of the piston, a second sealing check ring is arranged on one side of the first sealing check ring, one-way oil cavities are formed in the upper main body of the piston, six one-way oil cavities are formed in the upper main body.

Description

Piston for elevator with small friction coefficient

Technical Field

The utility model relates to a piston field for the elevator specifically is a little for elevator piston of coefficient of friction.

Background

The hydraulic buffer is used for buffering and decelerating objects acting on the hydraulic buffer to stop by means of hydraulic damping, plays a certain protection role, is suitable for mechanical equipment such as hoisting transportation, elevators, metallurgy, harbor machinery, railway vehicles and the like, and is used for preventing a safety buffer device from being damaged by hard collision in the working process, so that the hydraulic buffer is generally installed at the bottom of an elevator shaft.

The whole surface of the existing piston is mostly contacted with the inner wall of an inner pipe, the friction coefficient is large, the abrasion is fast, and the service life is prolonged in order to reduce the friction coefficient; therefore, the market urgently needs to develop a piston for a lifting elevator with a small friction coefficient to help people to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a little for elevator piston of coefficient of friction to solve among the above-mentioned background art current piston mostly be whole face and inner tube wall contact, coefficient of friction is big, the fast problem of wearing and tearing.

In order to achieve the above object, the utility model provides a following technical scheme: a piston for an elevator with small friction coefficient comprises an upper piston body, wherein a piston rod connecting sleeve is arranged on the outer surface of one end of the upper piston body, two pin holes are formed in the outer surface of the piston rod connecting sleeve and correspond to each other in position, six oil inlets are formed in the outer surface of one end of the upper piston body, a first sealing check ring is arranged on the side surface of the upper piston body, a second sealing check ring is arranged on one side of the first sealing check ring, one-way oil cavities are formed in the upper piston body and six one-way oil cavities, check balls are arranged in the one-way oil cavities, a limiting block is arranged on the inner wall of each one-way oil cavity, a limiting block is arranged on one side of the limiting block, a lower piston body is arranged on one side of the upper piston body, and a spring fixing seat is arranged on the outer surface of one end of the, an oil outlet is formed in the outer surface of one end of the lower piston body, a third sealing check ring is arranged on the side surface of the lower piston body, and a positioning block is arranged on the outer surface of one end of the lower piston body.

Preferably, the first sealing retainer ring and the second sealing retainer ring are integrally formed with the upper piston body, the third sealing retainer ring is integrally formed with the lower piston body, and the first sealing retainer ring, the second sealing retainer ring and the third sealing retainer ring are consistent in diameter and size and are consistent with the inner diameter of the inner pipe at the installation position.

Preferably, the oil inlets are communicated with the interior of the one-way oil cavities, the oil inlets correspond to the one-way oil cavities one by one, the diameter of the check ball is larger than that of the oil inlets, and the limiting block and the piston upper main body are integrally formed.

Preferably, the positioning block and the lower piston body are integrally formed, the lower piston body is provided with a one-way oil cavity, the one-way oil cavity in the lower piston body corresponds to the one-way oil cavity in the upper piston body in position, and the one-way oil cavity in the lower piston body is communicated with the inside of the oil outlet.

Preferably, a through hole is formed in the outer face of the limit stop, the limit stop is located between the limit block and the limit stop, and the diameter of the limit stop is consistent with the inner diameter of the one-way oil cavity.

Preferably, the piston lower main body is fixedly connected with the piston upper main body through a bolt, the piston rod connecting sleeve is integrally formed with the piston upper main body, and the spring fixing seat is integrally formed with the piston lower main body.

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

1. the utility model discloses a through with first retaining ring, second retaining ring and piston upper main part integrated into one piece, third retaining ring and piston lower main part integrated into one piece, the diameter size of first retaining ring, second retaining ring, third retaining ring is unanimous, and unanimous with the inner tube internal diameter of installation department, this has guaranteed sealing performance, has reduced the area of contact of piston and inner tube arm simultaneously to reduce the coefficient of friction, and reduced the rate of wear, improved life;

2. the utility model discloses a set up locating piece and piston lower main part as integrated into one piece, piston lower main part is provided with one-way oil pocket, and the one-way oil pocket in the main part of piston lower is corresponding with the one-way oil pocket position in the main part of piston upper, and the one-way oil pocket in the main part of piston lower communicates with each other with the oil-out inside, and this makes hydraulic oil can only one-way pass through whole piston inside, has guaranteed that the piston rod can bear great impact force, and the piston can quick reset simultaneously, guarantees for the normal cushioning operation of next time;

3. the utility model discloses a through set up the spring fixing base under the piston on the one end surface of main part, main part integrated into one piece under spring fixing base and the piston, this is lifted and can be played spacing effect to reset spring, has guaranteed that the effect direction piston of spring is unanimous with the activity direction of piston rod.

Drawings

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

FIG. 2 is a schematic bottom view of the whole body of the present invention;

FIG. 3 is an internal structural view of the present invention;

fig. 4 is a front view of the limit stop of the present invention.

In the figure: 1. a piston upper body; 2. the piston rod is connected with the sleeve; 3. a pin hole; 4. an oil inlet; 5. a first sealing retainer ring; 6. a second sealing retainer ring; 7. a piston lower body; 8. a third sealing retainer ring; 9. a spring fixing seat; 10. an oil outlet; 11. a one-way oil cavity; 12. a non-return ball; 13. a limiting block; 14. a limit stop block; 15. and (5) positioning the blocks.

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 piston for an elevator with small friction coefficient comprises a piston upper main body 1, a piston rod connecting sleeve 2 is arranged on the outer surface of one end of the piston upper main body 1, two pin holes 3 are arranged on the outer surface of the piston rod connecting sleeve 2, the positions of the pin holes 3 are corresponding, oil inlets 4 are arranged on the outer surface of one end of the piston upper main body 1, the number of the oil inlets 4 is six, a first sealing check ring 5 is arranged on the side surface of the piston upper main body 1, a second sealing check ring 6 is arranged on one side of the first sealing check ring 5, one-way oil cavities 11 are arranged in the piston upper main body 1, the number of the one-way oil cavities 11 is six, check balls 12 are arranged in the one-way oil cavities 11, a limiting block 13 is arranged on the inner wall of the one-way oil cavity 11, a limiting block 14 is arranged on one side of the limiting block 13, a piston lower main body, an oil outlet 10 is formed in the outer surface of one end of the piston lower body 7, a third sealing retainer ring 8 is arranged on the side surface of the piston lower body 7, and a positioning block 15 is arranged on the outer surface of one end of the piston lower body 7.

Further, first sealing retainer ring 5 and second sealing retainer ring 6 all with the piston on 1 integrated into one piece of main part, main part 7 integrated into one piece under third sealing retainer ring 8 and the piston, first sealing retainer ring 5, second sealing retainer ring 6, the diameter size of third sealing retainer ring 8 is unanimous, and unanimous with the inner tube internal diameter of installation department, this has guaranteed sealing performance, the area of contact of piston with the inner tube arm has been reduced simultaneously, thereby the coefficient of friction has been reduced, and the rate of wear has been reduced, and service life is prolonged.

Further, oil inlet 4 communicates with each other with the inside of one-way oil pocket 11, and oil inlet 4 and one-way oil pocket 11 one-to-one, and the diameter of non-return ball 12 is greater than the diameter of oil inlet 4, and stopper 13 and piston upper main part 1 integrated into one piece make hydraulic oil can only one-wayly through inside whole piston this, have guaranteed that the piston rod can bear great impulsive force, and the piston can quick the reseing simultaneously, guarantees for next normal buffering operation.

Further, the positioning block 15 and the piston lower body 7 are integrally formed, the piston lower body 7 is provided with a one-way oil chamber 11, the one-way oil chamber 11 in the piston lower body 7 corresponds to the one-way oil chamber 11 in the piston upper body 1 in position, and the one-way oil chamber 11 in the piston lower body 7 is communicated with the inside of the oil outlet 10.

Further, a through hole is formed in the outer face of the limit stop 14, the limit stop 14 is located between the limit block 13 and the limit stop 14, and the diameter of the limit stop 14 is consistent with the inner diameter of the one-way oil cavity 11.

Further, through bolt fixed connection between main part 1 under main part 7 and the piston, main part 1 integrated into one piece on piston rod adapter sleeve 2 and the piston, main part 7 integrated into one piece under spring fixing base 9 and the piston can play spacing effect to reset spring this, has guaranteed that the effect direction piston of spring is unanimous with the activity direction of piston rod.

The working principle is as follows: when the piston is used, the check ball 12 is firstly placed in the one-way oil cavity 11, the limit stop 14 is placed on one side of the limit block 13, the lower piston body 7 is fixedly connected with the upper piston body 1 through the bolt, the limit stop 14 is clamped between the limit block 13 and the positioning block 15 at the moment, one end of the piston rod is installed on the upper piston body 1, the piston is arranged in the inner tube, when the piston is pressed downwards, the oil leakage phenomenon is avoided due to the fact that the diameters of the first sealing check ring 5, the second sealing check ring 6 and the third sealing check ring 8 are consistent with the inner diameter of the inner tube, excessive friction is avoided, at the moment, hydraulic oil cannot penetrate through the inner part of the piston under the action of the check ball 12, the buffering effect is guaranteed, after buffering is finished, the spring installed at one end of the lower piston body 7 enables the piston to move upwards, at the moment, the hydraulic oil penetrates through the oil inlet, The oil outlet 10 enables the piston to reset quickly, and guarantees the normal operation of the next buffering operation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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 utility model provides a little for elevator piston of coefficient of friction, includes main part (1) on the piston, its characterized in that: the piston is characterized in that a piston rod connecting sleeve (2) is arranged on the outer surface of one end of the piston upper main body (1), two bolt holes (3) are formed in the outer surface of the piston rod connecting sleeve (2), the positions of the bolt holes (3) are corresponding, an oil inlet (4) is formed in the outer surface of one end of the piston upper main body (1), six oil inlets (4) are formed, a first sealing check ring (5) is arranged on the side surface of the piston upper main body (1), a second sealing check ring (6) is arranged on one side of the first sealing check ring (5), a one-way oil cavity (11) is formed in the piston upper main body (1), six one-way oil cavities (11) are formed in the piston upper main body (1), a check ball (12) is arranged in the one-way oil cavity (11), a limiting block (13) is arranged on the inner wall of the one-way oil cavity, one side of the upper piston body (1) is provided with a lower piston body (7), a spring fixing seat (9) is arranged on the outer surface of one end of the lower piston body (7), an oil outlet (10) is formed in the outer surface of one end of the lower piston body (7), a third sealing check ring (8) is arranged on the side surface of the lower piston body (7), and a positioning block (15) is arranged on the outer surface of one end of the lower piston body (7).

2. A piston for a small friction coefficient elevator according to claim 1, wherein: first sealing retainer ring (5) and second sealing retainer ring (6) all with on the piston main part (1) integrated into one piece, third sealing retainer ring (8) and under the piston main part (7) integrated into one piece, the diameter size of first sealing retainer ring (5), second sealing retainer ring (6), third sealing retainer ring (8) is unanimous, and unanimous with the inner tube internal diameter of installation department.

3. A piston for a small friction coefficient elevator according to claim 1, wherein: the oil inlet (4) is communicated with the inside of the one-way oil cavity (11), the oil inlets (4) are in one-to-one correspondence with the one-way oil cavities (11), the diameter of the check ball (12) is larger than that of the oil inlets (4), and the limiting block (13) and the piston upper main body (1) are integrally formed.

4. A piston for a small friction coefficient elevator according to claim 1, wherein: the piston is characterized in that the positioning block (15) and the lower piston body (7) are integrally formed, a one-way oil cavity (11) is formed in the lower piston body (7), the one-way oil cavity (11) in the lower piston body (7) corresponds to the one-way oil cavity (11) in the upper piston body (1), and the one-way oil cavity (11) in the lower piston body (7) is communicated with the oil outlet (10).

5. A piston for a small friction coefficient elevator according to claim 1, wherein: the oil pump is characterized in that a through hole is formed in the outer surface of the limit stop (14), the limit stop (14) is located between the limit block (13) and the limit stop (14), and the diameter of the limit stop (14) is consistent with the inner diameter of the one-way oil cavity (11).

6. A piston for a small friction coefficient elevator according to claim 1, wherein: the piston lower main body (7) is fixedly connected with the piston upper main body (1) through a bolt, the piston rod connecting sleeve (2) and the piston upper main body (1) are integrally formed, and the spring fixing seat (9) and the piston lower main body (7) are integrally formed.