CN216382082U

CN216382082U - High-efficient hydraulic cylinder sealing device convenient to change

Info

Publication number: CN216382082U
Application number: CN202123229269.1U
Authority: CN
Inventors: 赵国清; 王瑞新; 张文林
Original assignee: Tianjin Ruiwo Hydraulic Co ltd
Current assignee: Tianjin Ruiwo Hydraulic Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-04-26
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a high-efficiency hydraulic oil cylinder sealing device convenient to replace, which comprises an oil cylinder and a piston rod, wherein the inside of the oil cylinder is connected with the piston rod through a movable circular plate, a buffering energy dissipation mechanism is arranged below the movable circular plate, the piston rod extends out of the oil cylinder, a lower flange is arranged at the opening end of the oil cylinder, the lower flange is connected with an upper flange through a fastening screw, jacking mechanisms are arranged inside the upper flange and the lower flange, and a third sealing ring and a second sealing ring are sequentially arranged inside the lower flange and the upper flange. Through the mutual matching of the mechanisms, the sealing ring can be ensured to be always in contact with and sealed with the piston rod, the sealing effect is ensured, the abrasion of equipment and the entry of external impurities into the interior due to the generation of gaps are avoided, the service life is ensured, meanwhile, the utilization rate of the sealing ring can be improved, the replacement frequency is reduced, and further, the workload and the maintenance cost are reduced.

Description

High-efficient hydraulic cylinder sealing device convenient to change

Technical Field

The utility model relates to the technical field of hydraulic oil cylinder sealing, in particular to a high-efficiency hydraulic oil cylinder sealing device convenient to replace.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The hydraulic cylinder is an actuating element in a hydraulic transmission system and is an energy conversion device for converting hydraulic energy into mechanical energy. The hydraulic motor realizes continuous rotary motion, the hydraulic cylinder realizes reciprocating motion, and a common hydraulic oil cylinder can be provided with a buffer sealing ring before the main seal of the piston rod when working under high pressure, so as to filter the impact of pulse high pressure on the main seal and achieve the purpose of prolonging the service life of the main seal.

However, the following problems still occur in the actual working process: the wearing and tearing of sealing mechanism can aggravate when the radial force that the piston rod received is great, cause the gap to appear between piston rod and the seal structure, not only can influence life, still can lead to external impurity to enter into inside, influence life, just so need often change sealing mechanism, can not carry out abundant utilization to the sealing washer, frequent change not only can increase staff's work burden, still increases the cost of maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficiency hydraulic oil cylinder sealing device convenient to replace, and aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high-efficient hydraulic cylinder sealing device convenient to change, includes hydro-cylinder and piston rod, and the hydro-cylinder is inside to be connected with the piston rod through removing the plectane, removes the plectane and has buffering energy dissipation mechanism to the piston rod extension hydro-cylinder is outside, and the open end of hydro-cylinder is equipped with the lower flange, and the lower flange is connected with the upper flange through fastening screw, and the upper flange all is equipped with the tight mechanism in top with the lower flange is inside, is equipped with third sealing washer and second sealing washer in proper order in lower flange and the upper flange.

Preferably, the tight mechanism in top is equipped with arc splint including seting up the mounting groove in that the lower flange is inside, the equidistance in the mounting groove, and the both ends of arc splint all are equipped with the cushion to four arc splint splice into the annular, are equipped with tight spring in top and direction telescopic link on the lateral wall of arc splint and mounting groove in proper order, and the direction telescopic link is located between two tight springs in top, arc splint and third sealing washer phase-match.

Preferably, the structure of the jacking mechanism in the upper flange is the same as that of the jacking mechanism in the lower flange, and the jacking mechanism in the upper flange is matched with the second sealing ring.

Preferably, the upper flange and the lower flange are internally provided with a support ring in the mounting groove, the support ring is matched with the arc-shaped clamping plate, and a sealing gasket is arranged between the support ring and the arc-shaped clamping plate.

Preferably, a first sealing ring is arranged between the piston rod and the opening end of the oil cylinder.

Preferably, the buffering energy dissipation mechanism comprises mounting seats arranged under the movable circular plate at equal intervals, the mounting seats are connected with the movable circular plate through buffering springs, marbles are arranged under the mounting seats, and the buffering energy dissipation mechanism further comprises buffering grooves formed in the bottom end inside the oil cylinder and corresponding to the marbles.

Preferably, the outer part of the movable circular plate is sleeved with a sealing sleeve, and the sealing sleeve is attached to the inner wall of the oil cylinder.

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

(1) the sealing performance between the piston rod and the oil cylinder can be ensured under the common action of the first sealing ring, the second sealing ring and the third sealing ring, the service life of the equipment is ensured, the jacking mechanism is mutually matched with the second sealing ring and the third sealing ring, the equipment is continuously worn when being used by a user, the jacking mechanism and the piston rod can be ensured to be always in close contact with each other under the action of the jacking mechanism, the sealing effect of the sealing rings can be ensured to the maximum extent, the utilization rate of the sealing rings is improved, the problems that the equipment is worn and external impurities enter the interior due to gaps after the equipment is used for a period of time are avoided, the service life of the equipment is ensured, the frequency of replacing the sealing rings is reduced, the work burden is reduced, and the maintenance cost can be reduced;

(2) through the fastening screw between lower flange and the last flange, conveniently install or dismantle it, and then when needs are changed the sealing washer, convenient operation is changed, and work efficiency is improved, the support ring can support spacingly with sealed the arc splint that fill up at both ends from top to bottom, guarantee the tight effect of clamp to the sealing washer, and then guarantee sealed effect, can reduce the rigid contact between removal plectane and the hydro-cylinder through buffering energy dissipation mechanism, the energy dissipation is cushioned to the power when contacting, protect equipment, and then can effectual improve equipment's life.

Drawings

FIG. 1 is a schematic view of the internal structure of a high-efficiency hydraulic oil cylinder sealing device which is convenient to replace and provided by the utility model;

FIG. 2 is a schematic structural view of a buffering energy dissipation mechanism in the high-efficiency hydraulic oil cylinder sealing device convenient to replace, which is provided by the utility model;

FIG. 3 is a schematic view of the overall structure of a conveniently replaceable high-efficiency hydraulic oil cylinder sealing device provided by the utility model;

FIG. 4 is a schematic structural diagram of a tightening mechanism in the conveniently replaceable high-efficiency hydraulic oil cylinder sealing device provided by the utility model;

fig. 5 is a schematic structural diagram of a support ring in the high-efficiency hydraulic oil cylinder sealing device provided by the utility model, which is convenient to replace.

In the figure: 1. an oil cylinder; 2. a piston rod; 3. a lower flange; 4. an upper flange; 5. a first seal ring; 6. a support ring; 7. a second seal ring; 8. a third seal ring; 9. moving the circular plate; 10. sealing sleeves; 11. a buffer tank; 12. a marble; 13. a buffer spring; 14. a mounting seat; 15. fastening screws; 16. guiding the telescopic rod; 17. the spring is tightly propped; 18. mounting grooves; 19. an arc-shaped splint; 20. a soft cushion; 21. and a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention is shown: a high-efficiency hydraulic oil cylinder sealing device convenient to replace comprises an oil cylinder 1 and a piston rod 2, wherein a first sealing ring 5 is arranged between the piston rod 2 and the open end of the oil cylinder 1, the inside of the oil cylinder 1 is connected with the piston rod 2 through a movable circular plate 9, a buffering energy dissipation mechanism is arranged below the movable circular plate 9, the piston rod 2 extends out of the oil cylinder 1, a lower flange 3 is arranged at the open end of the oil cylinder 1, the lower flange 3 is connected with an upper flange 4 through a fastening screw 15, a jacking mechanism is arranged inside the upper flange 4 and the lower flange 3, a third sealing ring 8 and a second sealing ring 7 are sequentially arranged inside the lower flange 3 and the upper flange 4, through the mutual matching of the mechanisms, the sealing rings can be always in contact sealing with the piston rod 2, the sealing effect is ensured, the abrasion of equipment and the external impurities entering the inside due to the generation of gaps are avoided, the service life is ensured, and the utilization rate of the sealing rings can be improved at the same time, the replacement frequency is reduced, and the workload and the maintenance cost are further reduced.

Further, the tightening mechanism comprises a mounting groove 18 arranged inside the lower flange 3, arc-shaped clamping plates 19 are equidistantly arranged in the mounting groove 18, cushions 20 are arranged at two ends of each arc-shaped clamping plate 19, the four arc-shaped clamping plates 19 are spliced into a ring, tightening springs 17 and a guiding telescopic rod 16 are sequentially arranged on the arc-shaped clamping plates 19 and the side wall of the mounting groove 18, the guiding telescopic rod 16 is positioned between the two tightening springs 17, the arc-shaped clamping plates 19 are matched with a third sealing ring 8, the tightening mechanism inside the upper flange 4 is identical in structure with the tightening mechanism inside the lower flange 3, the tightening mechanism inside the upper flange 4 is matched with the second sealing ring 7, the tightening mechanism is matched with the second sealing ring 7 and the third sealing ring 8, the tightening mechanism is continuously worn, the tightening mechanism can be always kept in close contact with the piston rod 2, and the sealing effect of the sealing rings can be furthest guaranteed, the utilization ratio of the sealing ring is improved, and the problem that the abrasion of equipment and external impurities enter the inside due to the occurrence of gaps after the sealing ring is used for a period of time is avoided.

Further, be equipped with support ring 6 in mounting groove 18 in upper flange 4 and lower flange 3, support ring 6 and arc splint 19 phase-match to be equipped with sealed pad 21 between support ring 6 and the arc splint 19, support ring 6 and sealed pad 21 can support spacingly to the arc splint 19 at upper and lower both ends, guarantee the tight effect of clamp to the sealing washer, and then guarantee sealed effect.

Further, buffering energy dissipation mechanism includes that the equidistance sets up mount pad 14 under removing the plectane 9, be connected through buffer spring 13 between mount pad 14 and the removal plectane 9, and be equipped with marble 12 under mount pad 14, buffering energy dissipation mechanism still includes the buffer slot 11 of seting up in the inside bottom of hydro-cylinder 1 and corresponding with marble 12, it is equipped with seal cover 10 to remove the outside cover of plectane 9, seal cover 10 is laminated with hydro-cylinder 1 inner wall mutually, can reduce the rigid contact between removal plectane 9 and the hydro-cylinder 1 through buffering energy dissipation mechanism, the power when contacting cushions the energy dissipation, protect equipment, and then can effectual improve equipment's life.

The working principle is as follows: when the sealing ring is used, when the sealing ring is installed, the second sealing ring 7 is placed into the four arc-shaped clamping plates 19, the jacking spring 17 is stressed to contract, the guide telescopic rod 16 contracts along with the contraction, the cushion 20 between the two adjacent arc-shaped clamping plates 19 is stressed to deform, the second sealing ring 7 can be jacked and fixed, the steps are repeated, the third sealing ring 8 can be placed into the lower flange 3, the support ring 6 is firstly sleeved on the piston rod 2, the upper flange 4 is sleeved, the support ring 6 and the sealing gasket 21 can support and limit the arc-shaped clamping plates 19 at the upper end and the lower end, the clamping effect of the sealing ring is ensured, the sealing effect is further ensured, the lower flange 3 and the upper flange 4 are fixed through the fastening screw 15, when the piston rod 2 works, the second sealing ring 7 and the third sealing ring 8 are continuously abraded, under the action of elastic potential energy of contraction of a jacking spring 17 on a jacking mechanism, the sealing effect of a sealing ring can be ensured to the maximum extent, the utilization rate of the sealing ring is improved, the problems that the equipment is abraded and external impurities enter the inside due to gaps after the sealing ring is used for a period of time are avoided, the service life of the equipment is ensured, the frequency of replacing the sealing ring is reduced, the work load is reduced, the maintenance cost can be reduced, when the sealing ring needs to be replaced, the upper flange 4 can be taken down only by taking down a fastening screw 15, the sealing ring is convenient to replace, the maintenance efficiency is improved, when the movable circular plate 9 is in contact with the bottom end of the oil cylinder 1 in use, firstly, the marble 12 enters the buffer groove 11, the marble 12 is stressed and deformed, an extrusion force is generated on the mounting seat 14, and the buffer spring 13 is stressed and contracted, the energy dissipation can be buffered to the power when contacting, and equipment is protected, and then the life of improvement equipment that can be effectual.

It will be evident to those skilled in the art that the utility model 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 utility model 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 high-efficient hydraulic cylinder sealing device convenient to change, includes hydro-cylinder (1) and piston rod (2), its characterized in that: the energy-saving oil cylinder is characterized in that the inside of the oil cylinder (1) is connected with the piston rod (2) through a movable circular plate (9), a buffering energy dissipation mechanism is arranged below the movable circular plate (9), the piston rod (2) extends to the outside of the oil cylinder (1), a lower flange (3) is arranged at the opening end of the oil cylinder (1), the lower flange (3) is connected with an upper flange (4) through a fastening screw (15), the upper flange (4) and the inside of the lower flange (3) are both provided with a jacking mechanism, and a third sealing ring (8) and a second sealing ring (7) are sequentially arranged in the lower flange (3) and the upper flange (4).

2. A high efficiency hydraulic ram seal assembly to facilitate replacement as claimed in claim 1 wherein: the tight mechanism in top is including offering mounting groove (18) inside flange (3) down, the equidistance is equipped with arc splint (19) in mounting groove (18), the both ends of arc splint (19) all are equipped with cushion (20), and four arc splint (19) splice and encircle, arc splint (19) with be equipped with in proper order on the lateral wall of mounting groove (18) and push up tight spring (17) and direction telescopic link (16), and direction telescopic link (16) are located two between the tight spring (17) in top, arc splint (19) with third sealing washer (8) phase-match.

3. A high efficiency hydraulic ram seal assembly to facilitate replacement as claimed in claim 2 wherein: the structure of the jacking mechanism in the upper flange (4) is the same as that of the jacking mechanism in the lower flange (3), and the jacking mechanism in the upper flange (4) is matched with the second sealing ring (7).

4. A high efficiency hydraulic ram seal assembly to facilitate replacement as claimed in claim 3 wherein: go up flange (4) with be equipped with support ring (6) in mounting groove (18) in lower flange (3), support ring (6) with arc splint (19) phase-match, and support ring (6) with be equipped with sealed pad (21) between arc splint (19).

5. A high efficiency hydraulic ram seal assembly to facilitate replacement as claimed in claim 1 wherein: and a first sealing ring (5) is arranged between the piston rod (2) and the open end of the oil cylinder (1).

6. A high efficiency hydraulic ram seal assembly to facilitate replacement as claimed in claim 1 wherein: the buffering energy dissipation mechanism comprises mounting seats (14) arranged under the movable circular plates (9) at equal intervals, the mounting seats (14) are connected with the movable circular plates (9) through buffer springs (13), marbles (12) are arranged under the mounting seats (14), and the buffering energy dissipation mechanism further comprises buffering grooves (11) which are formed in the bottom ends inside the oil cylinders (1) and correspond to the marbles (12).

7. The easy-to-replace high efficiency hydraulic ram seal assembly of claim 6 further comprising: the outer portion of the movable circular plate (9) is sleeved with a sealing sleeve (10), and the sealing sleeve (10) is attached to the inner wall of the oil cylinder (1).