CN217682563U

CN217682563U - High-sealing piston cylinder for hydraulic cylinder

Info

Publication number: CN217682563U
Application number: CN202221584093.3U
Authority: CN
Inventors: 陈泽忠; 陈泽林; 陈苏娟
Original assignee: Xianju Yuanzhong Hydraulic Machinery Co ltd
Current assignee: Xianju Yuanzhong Hydraulic Machinery Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-10-28
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a high leakproofness piston cylinder for pneumatic cylinder, including the outer cylinder, guide arm bottom fixedly connected with piston body, piston body external diameter top position runs through and fixedly connected with keeps off the ring, piston body external diameter intermediate position runs through and fixedly connected with ring that wear-resistants, piston body external diameter bottom position runs through and fixedly connected with sealing washer. The utility model discloses in, this device is provided with two inside and outside cylinder bodies, and the outer jar protects the inner casing well, installs the piston body bottom the guide arm, installs the sealing washer on the piston body, plays sealed effect, installs the ring that wear-resistants at piston body external diameter intermediate position, avoids contacting between piston body and the inner casing inner wall, appears drawing the jar phenomenon to damage the piston body, install at piston body external diameter top position and keep off the ring, further play sealed effect, greatly improved the sealing performance of device.

Description

High-sealing piston cylinder for hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field especially relates to a high leakproofness piston cylinder for pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating movement, it can save speed reducer, and has no transmission gap and stable movement, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The buffer device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

Chinese patent document 201921094577.8 discloses an oil cylinder piston, including the piston of sliding fit in the cylinder, the cover is equipped with the sealing washer on the outer wall of piston, the coaxial connecting hole of having seted up of terminal surface of piston, be provided with threaded connection portion and sliding part on the connecting hole pore wall, threaded connection portion is located the sliding part top, the coaxial guiding hole of having seted up of diapire of connecting hole, the sliding part slides and is connected with the bottom block, the bottom block diapire is connected with the guide block, the transversal trapezoidal form of personally submitting of guide block, a plurality ofly evenly seted up on the piston outer wall with the communicating spliced eye of guiding hole, it is a plurality of the activity is pegged graft in the spliced eye has the guide bar, guide bar one end is contradicted in the guide block outer wall, and the other end is contradicted in the cylinder inner wall. The device that this patent provided lacks fine seal structure at the practical application in-process, and sealed effect is relatively poor, and the device that this patent provided simultaneously lacks buffer structure, can not protect the piston well, and device work efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the high leakproofness piston cylinder for pneumatic cylinder that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a high leakproofness piston cylinder for pneumatic cylinder, includes the outer cylinder, outer cylinder bottom fixedly connected with cylinder bottom, cylinder bottom top central point puts fixedly connected with jar seat, jar seat top fixedly connected with inner cylinder, jar seat top fixedly connected with spring, outer cylinder top external diameter position fixedly connected with cylinder cap, cylinder cap top central point puts and runs through and sliding connection has the guide arm, cylinder cap bottom central point fixedly connected with uide bushing, guide arm bottom fixedly connected with piston body, piston body external diameter top position runs through and fixedly connected with keeps off the ring, piston body external diameter intermediate position runs through and the ring that wears fixedly connected with, piston body external diameter bottom position runs through and the fixedly connected with sealing washer.

As a further description of the above technical solution:

the inner cylinder is located inside the outer cylinder, and the spring is in contact with the sealing ring.

As a further description of the above technical solution:

the top of the outer diameter of the guide sleeve penetrates through and is fixedly connected with a dustproof ring.

As a further description of the above technical solution:

and the bottom of the outer diameter of the guide sleeve penetrates through and is fixedly connected with an oil seal.

As a further description of the above technical solution:

the central position of the bottom of the piston body is fixedly connected with a buffer column.

As a further description of the above technical solution:

the inner wall of the inner cylinder is respectively contacted with the oil seal and the dustproof ring.

As a further description of the above technical solution:

the inner wall of the inner cylinder is respectively connected with the baffle ring, the sealing ring and the antiwear ring in a sliding way.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, at first, this device is provided with two inside and outside cylinder bodies, and the inner casing is protected well to the outer jar, installs the piston body in the guide arm bottom, installs the sealing washer on the piston body, plays sealed effect, installs the ring that wear-resistants at piston body external diameter intermediate position, avoids contacting between piston body and the inner wall of the inner cylinder, appears drawing the jar phenomenon to damage the piston body, install at piston body external diameter top position and keep off the ring, further play sealed effect, greatly improved the sealing performance of device.

2. The utility model discloses in, install the uide bushing in the cylinder cap bottom, install the oil blanket at uide bushing external diameter bottom position, prevent effectively that the interior fluid of jar from oozing, install the dust ring at uide bushing external diameter top position, can prevent inside external dust entering device effectively, prevent to draw jar and fluid rotten, very big hoisting device's life, install the cushion column bottom piston body, and contact between spring and the sealing washer, can play fine cushioning effect, the piston body has greatly been protected, hoisting device's work efficiency.

Drawings

Fig. 1 is a perspective view of a high-tightness piston cylinder for a hydraulic cylinder according to the present invention;

fig. 2 is an internal structure diagram of an outer cylinder of a high-tightness piston cylinder for a hydraulic cylinder according to the present invention;

fig. 3 is the internal structure diagram of the internal cylinder of the high-tightness piston cylinder for the hydraulic cylinder provided by the utility model.

Illustration of the drawings:

1. an outer cylinder; 2. a cylinder cover; 3. a guide bar; 4. a cylinder bottom; 5. an inner cylinder; 6. a cylinder base; 7. a guide sleeve; 8. oil sealing; 9. a baffle ring; 10. a seal ring; 11. a spring; 12. a buffer column; 13. an antiwear ring; 14. a piston body; 15. a dust 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a high leakproofness piston cylinder for pneumatic cylinder, including outer cylinder 1, outer cylinder 1 bottom position fixedly connected with cylinder bottom 4, 4 top central points of cylinder bottom fixedly connected with

cylinder base

6, 6 top position fixedly connected with inner cylinder 5 of cylinder base, 6 top fixedly connected with springs 11 of cylinder base, 1 top external diameter position fixedly connected with cylinder cap 2 of outer cylinder, 2 top central points of cylinder cap run through and sliding connection has guide arm 3, 2 bottom central points fixedly connected with uide bushing 7 of cylinder cap, 3 bottom position fixedly connected with piston body 14 of guide arm, 14 external diameter top positions of piston body run through and fixedly connected with

retaining ring

9, 14 external diameter intermediate positions of piston body run through and fixedly connected with ring 13 that wear-resistants, 14 external diameter bottom positions of piston body run through and fixedly connected with sealing washer 10, this device is provided with two inside and outside cylinders, outer cylinder 1 protects inner cylinder 5 well, install piston body 14 bottom guide arm 3, install sealing washer 10 on the piston body 14, play the sealing effect, install ring 13 in 14 external diameter intermediate positions of piston body, avoid between piston body 14 and the inner cylinder 5 inner wall contact, the phenomenon appears, thereby damage piston body 14, the sealing performance is greatly improved sealing device.

The inner cylinder 5 is located inside the outer cylinder 1, the spring 11 is in contact with the sealing ring 10, the outer diameter top position of the guide sleeve 7 penetrates through and is fixedly connected with a dustproof ring 15, the outer diameter bottom position of the guide sleeve 7 penetrates through and is fixedly connected with an oil seal 8, the central position of the bottom of the piston body 14 is fixedly connected with a buffer column 12, the inner wall of the inner cylinder 5 is in contact with the oil seal 8 and the dustproof ring 15 respectively, the inner wall of the inner cylinder 5 is in contact with a baffle ring 9, the sealing ring 10 and an anti-wear ring 13 respectively, the guide sleeve 7 is installed at the bottom of the cylinder cover 2, the oil seal 8 is installed at the outer diameter bottom position of the guide sleeve 7, oil seepage in the cylinder is effectively prevented, the dustproof ring 15 is installed at the outer diameter top position of the guide sleeve 7, external dust can be effectively prevented from entering the device, the cylinder and the oil are prevented from deteriorating, the service life of the lifting device is prolonged, the buffer column 12 is installed at the bottom of the piston body 14, the spring 11 is in contact with the sealing ring 10, a good buffer effect can be achieved, the piston body 14 is greatly protected, and the working efficiency of the lifting device is improved.

The working principle is as follows: firstly, the device is provided with an inner cylinder body and an outer cylinder body, the outer cylinder 1 well protects the inner cylinder 5, a piston body 14 is installed at the bottom of a guide rod 3, a sealing ring 10 is installed on the piston body 14 to play a role in sealing, an anti-abrasion ring 13 is installed at the middle position of the outer diameter of the piston body 14 to avoid contact between the piston body 14 and the inner wall of the inner cylinder 5, and the phenomenon of cylinder drawing is caused, so that the piston body 14 is damaged, a baffle ring 9 is installed at the top position of the outer diameter of the piston body 14 to further play a role in sealing, the sealing performance of the device is greatly improved, a guide sleeve 7 is installed at the bottom of a cylinder cover 2, an oil seal 8 is installed at the bottom position of the outer diameter of the guide sleeve 7 to effectively prevent oil in the cylinder from seeping, a dust-proof ring 15 is installed at the top position of the outer diameter of the guide sleeve 7 to effectively prevent external dust from entering the inside of the device to prevent cylinder drawing and oil from deteriorating, the service life of the device is greatly prolonged, a buffer column 12 is installed at the bottom of the piston body 14, and the spring 11 is in contact with the sealing ring 10 to play a good role in buffering, so that the piston body 14 is greatly improved working efficiency of the device.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a high leakproofness piston cylinder for pneumatic cylinder, includes outer jar (1), its characterized in that: outer cylinder (1) bottom position fixedly connected with cylinder end (4), cylinder end (4) top central point puts fixedly connected with cylinder seat (6), cylinder seat (6) top position fixedly connected with inner casing (5), cylinder seat (6) top fixedly connected with spring (11), outer cylinder (1) top external diameter position fixedly connected with cylinder cap (2), cylinder cap (2) top central point puts and runs through and sliding connection has guide arm (3), cylinder cap (2) bottom central point puts fixedly connected with uide bushing (7), guide arm (3) bottom position fixedly connected with piston body (14), piston body (14) external diameter top position runs through and fixedly connected with fender ring (9), piston body (14) external diameter intermediate position runs through and fixedly connected with ring (13) that wear-resistants, piston body (14) external diameter bottom position runs through and fixedly connected with sealing washer (10).

2. The high-tightness piston cylinder for the hydraulic cylinder according to claim 1, characterized in that: the inner cylinder (5) is located inside the outer cylinder (1), and the spring (11) is in contact with the sealing ring (10).

3. The high-tightness piston cylinder for the hydraulic cylinder according to claim 1, characterized in that: the top of the outer diameter of the guide sleeve (7) penetrates through and is fixedly connected with a dustproof ring (15).

4. The high-sealability piston cylinder for a hydraulic cylinder of claim 1, wherein: the bottom of the outer diameter of the guide sleeve (7) penetrates through and is fixedly connected with an oil seal (8).

5. The high-tightness piston cylinder for the hydraulic cylinder according to claim 1, characterized in that: the center position of the bottom of the piston body (14) is fixedly connected with a buffer column (12).

6. The high-tightness piston cylinder for the hydraulic cylinder according to claim 1, characterized in that: the inner wall of the inner cylinder (5) is respectively contacted with the oil seal (8) and the dust ring (15).

7. The high-tightness piston cylinder for the hydraulic cylinder according to claim 1, characterized in that: the inner wall of the inner cylinder (5) is respectively connected with the baffle ring (9), the sealing ring (10) and the antiwear ring (13) in a sliding way.