CN212297110U

CN212297110U - Engineering machinery hydraulic cylinder capable of reducing replacement frequency of sealing ring

Info

Publication number: CN212297110U
Application number: CN202020792971.5U
Authority: CN
Inventors: 张涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-01-05
Anticipated expiration: 2030-05-13

Abstract

The utility model provides an engineering machinery hydraulic cylinder capable of reducing the replacement frequency of a sealing ring, which comprises a cylinder barrel, wherein the cylinder barrel has the advantages of being provided with an end cover, the inside of the cylinder barrel is provided with a piston rod, one end of the piston rod is provided with a connector, the outer side of the connector is sleeved with a piston, and the contact surface of the piston and the cylinder barrel is provided with a piston seal; the utility model provides a can reduce engineering machine tool pneumatic cylinder of sealing washer change frequency, piston rod through the design is sealed and the piston is sealed, drive the slip ring and slide in the seal groove when piston rod and piston remove when using, then promote sealing spring and press on quiet sealing washer, make and promote piece promotion sealing strip and sealed post, it is sealed to make sealing strip and the quiet sealing washer of sealed post jack-up bulge, the long-term round trip slip of piston that has solved can appear the sealing washer wearing and tearing and the phenomenon that appears sealed not tight, need frequently change the problem of sealing washer.

Description

Engineering machinery hydraulic cylinder capable of reducing replacement frequency of sealing ring

Technical Field

The utility model relates to a pneumatic cylinder field especially relates to an engineering machine tool pneumatic cylinder that can reduce the sealing washer and change frequency.

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.

When the existing hydraulic cylinder of the engineering machinery is used, the phenomenon that sealing rings are not tightly sealed due to the fact that the sealing rings are abraded due to the fact that a piston slides back and forth for a long time is caused, and the sealing rings need to be frequently replaced, so that the hydraulic cylinder of the engineering machinery capable of reducing the replacement frequency of the sealing rings is needed to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can reduce the engineering machine tool pneumatic cylinder that the sealing washer changed the frequency, solve a current engineering machine tool pneumatic cylinder when using, because the long-term round trip slip of piston can appear the sealing washer wearing and tearing and appear sealed not tight phenomenon, need frequently change the problem of sealing washer.

In order to solve the technical problem, the utility model provides an engineering machinery hydraulic cylinder capable of reducing the replacement frequency of a sealing ring, which comprises a cylinder barrel, wherein the cylinder barrel is provided with an end cover, a piston rod is arranged in the cylinder barrel, one end of the piston rod is provided with a connector, a piston is sleeved outside the connector, the contact surface of the piston and the cylinder barrel is provided with a piston seal, the contact surface of the inner wall of one end of the end cover and the piston rod is provided with a piston rod seal, the piston seal comprises a seal groove, a sliding ring, a static sealing ring and a pushing block, the surface of the piston and the inner wall of the piston rod seal are both provided with seal grooves, the pushing block is fixedly arranged at the two ends of the seal groove, the static sealing ring is sleeved on the pushing block, a sealing column is arranged in, the slip ring slides and sets up in the seal groove, the both sides fixedly connected with sealing spring of slip ring, sealing spring's one end and quiet sealing washer fixed connection, and the sealed structure of piston rod and piston seal is the same.

Preferably, the sealing belt is obliquely arranged in the static sealing ring, and one end of the pushing block is inserted into the static sealing ring and tightly pressed on the sealing belt.

Preferably, the one end of connector is provided with the cushion collar, and the one end of piston sticiss on the cushion collar, the cushion collar is including fixed cover, main buffer spring and sliding sleeve, the one end and the piston rod fixed connection of fixed cover, the slidable mounting of sliding sleeve is in the outside of connector, and the one end and the piston fixed connection of sliding sleeve, sliding connection between fixed cover and the sliding sleeve, fixed cover is established respectively at fixed cover and sliding sleeve in main buffer spring's both ends.

Preferably, the cushion collar still includes supplementary dashpot, supplementary sliding ring and auxiliary spring, the surface at the connector is seted up to supplementary dashpot, supplementary sliding ring fixed mounting is in the downside of sliding sleeve, and supplementary sliding ring slidable mounting is in supplementary dashpot, auxiliary spring installs in supplementary dashpot, and auxiliary spring's one end and supplementary sliding ring fixed connection.

Preferably, the one end outside of piston is provided with antifouling ring sum ring of wearing, the one end of connector is closed soon has the nut.

Preferably, one end of the end cover is provided with a dustproof ring, and the piston rod is slidably mounted on the inner side of the dustproof ring.

Compared with the prior art, the utility model provides a pair of engineering machine tool pneumatic cylinder that can reduce sealing washer and change frequency has following beneficial effect:

the utility model provides a can reduce engineering machine tool pneumatic cylinder of sealing washer change frequency, piston rod through the design is sealed and the piston is sealed, drive the slip ring and slide in the seal groove when piston rod and piston remove when using, then promote sealing spring and press on quiet sealing washer, make and promote piece promotion sealing strip and sealed post, it is sealed to make sealing strip and the quiet sealing washer of sealed post jack-up bulge, prevent to have wearing and tearing a little and the phenomenon of gas leakage appears, the long-term round trip slip of piston that has solved can appear sealing washer wearing and tearing and the phenomenon of sealing not tight appears, need frequently change the problem of sealing washer.

The utility model provides a can reduce engineering machine tool pneumatic cylinder of sealing washer change frequency adopts the cushion collar, drives slip collar compression main buffer spring and cushions when the piston rod drives the piston and slides to drive supplementary sliding ring and slide compression auxiliary spring in supplementary dashpot and assist the buffering, make the buffering effect better, solved the problem that the buffering effect variation leads to the piston trouble after long-time the use.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of an engineering mechanical hydraulic cylinder capable of reducing the replacement frequency of a sealing ring according to the present invention;

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

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

fig. 4 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

Reference numbers in the figures: 1. a piston rod; 2. an end cap; 3. a cylinder barrel; 4. a dust ring; 5. the piston rod is sealed; 6. an antifouling ring; 7. an antiwear ring; 8. sealing the piston; 9. a piston; 10. a nut; 11. a buffer sleeve; 12. a connector; 13. a sealing groove; 14. a slip ring; 15. a seal spring; 16. a static seal ring; 17. sealing tape; 18. sealing the column; 19. a pushing block; 20. fixing a sleeve; 21. a main buffer spring; 22. a sliding sleeve; 23. an auxiliary buffer tank; 24. an auxiliary slip ring; 25. an auxiliary spring.

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 technical scheme in the utility model, all other embodiments that ordinary skilled person in the art obtained under the prerequisite of not making the creative work all belong to the scope of the utility model protection.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein fig. 1 is a schematic structural diagram of the hydraulic cylinder of the present embodiment; FIG. 2 is a schematic view of the inner structure of the cylinder; FIG. 3 is a schematic view of a piston seal; fig. 4 is an enlarged schematic view of a portion a in fig. 2. An engineering machinery hydraulic cylinder capable of reducing sealing ring replacement frequency comprises a cylinder barrel 3, an end cover 2 is arranged on the advantage of the cylinder barrel 3, a piston rod 1 is arranged inside the cylinder barrel 3, a connector 12 is arranged at one end of the piston rod 1, a piston 9 is sleeved outside the connector 12, a piston seal 8 is arranged on the contact surface of the piston 9 and the cylinder barrel 3, a piston rod seal 5 is arranged on the contact surface of the inner wall of one end of the end cover 2 and the piston rod 1, the piston seal 8 comprises a seal groove 13, a sliding ring 14, a static seal ring 16 and a pushing block 19, the surface of the piston 9 and the inner wall of the piston rod seal 5 are both provided with the seal groove 13, the pushing block 19 is fixedly arranged at two ends of the seal groove 13, the static seal ring 16 is sleeved on the pushing block 19, a seal column 18 is arranged inside the static seal ring 16, and sealing springs 15 are fixedly connected to two sides of the sliding ring 14, one end of each sealing spring 15 is fixedly connected with a static sealing ring 16, and the structures of the piston rod seal 5 and the piston seal 8 are the same.

Further, the seal band 17 is installed in the static seal ring 16 in an inclined shape, and one end of the pusher block 19 is inserted into the static seal ring 16 and pressed against the seal band 17.

Further, one end of the connector 12 is provided with a buffer sleeve 11, one end of the piston 9 is tightly pressed on the buffer sleeve 11, the buffer sleeve 11 comprises a fixed sleeve 20, a main buffer spring 21 and a sliding sleeve 22, one end of the fixed sleeve 20 is fixedly connected with the piston rod 1, the sliding sleeve 22 is slidably mounted on the outer side of the connector 12, one end of the sliding sleeve 22 is fixedly connected with the piston 9, the fixed sleeve 20 is slidably connected with the sliding sleeve 22, and two ends of the main buffer spring 21 are respectively fixedly sleeved on the fixed sleeve 20 and the sliding sleeve 22.

Further, cushion collar 11 still includes supplementary buffer slot 23, supplementary sliding ring 24 and auxiliary spring 25, and supplementary buffer slot 23 is seted up on the surface of connector 12, and supplementary sliding ring 24 fixed mounting is in the downside of sliding sleeve 22, and supplementary sliding ring 24 slidable mounting is in supplementary buffer slot 23, and auxiliary spring 25 installs in supplementary buffer slot 23, and auxiliary spring 25's one end and supplementary sliding ring 24 fixed connection.

Furthermore, an anti-fouling ring 6 and an anti-wear ring 7 are arranged on the outer side of one end of the piston 9, and a nut 10 is screwed at one end of the connecting head 12.

Further, one end of the end cover 2 is provided with a dust ring 4, and the piston rod 1 is slidably mounted inside the dust ring 4.

The utility model provides a pair of engineering machine tool pneumatic cylinder that frequency was changed to sealing washer can be reduced the theory of operation as follows: when the piston rod type sealing device is used, the piston rod 1 and the piston 9 slide in the end cover 2 and the cylinder barrel 3, when the piston rod 1 and the piston 9 slide, friction drives the sliding ring 14 to slide in the sealing groove 13 to push the sealing spring 15, the sealing spring 15 is pressed on the static sealing ring 16, the pushing block 19 is pushed to be tightly pressed on the sealing strip 17, the sealing strip 17 pushes the sealing column 18 to jack the static sealing ring 16 to swell and seal, the phenomenon that sealing is not tight due to slight abrasion is prevented, the sealing ring replacement frequency is reduced, when the piston rod 1 drives the piston 9 to slide, the piston rod 1 is pressed on the buffer sleeve 11, the main buffer spring 21 is compressed through the sliding sleeve 22 to perform buffering, the auxiliary sliding ring 24 is synchronously driven to slide in the auxiliary buffer groove 23 to compress the auxiliary spring 25 to perform auxiliary buffering, and the.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a can reduce engineering machine tool pneumatic cylinder that sealing washer changed frequency, includes cylinder (3), its characterized in that: the cylinder barrel (3) is provided with an end cover (2) with an advantage, a piston rod (1) is arranged inside the cylinder barrel (3), a connector (12) is arranged at one end of the piston rod (1), a piston (9) is sleeved outside the connector (12), a piston seal (8) is arranged on the contact surface of the piston (9) and the cylinder barrel (3), a piston rod seal (5) is arranged on the contact surface of the inner wall of one end of the end cover (2) and the piston rod (1), the piston seal (8) comprises a seal groove (13), a sliding ring (14), a static seal ring (16) and a push block (19), the seal groove (13) is formed on the surface of the piston (9) and the inner wall of the piston rod seal (5), the push block (19) is fixedly arranged at two ends of the seal groove (13), the static seal ring (16) is sleeved on the push block, the inside of quiet sealing washer (16) is provided with sealed post (18), the one end of sealed post (18) is provided with sealing strip (17), slip ring (14) slide to set up in seal groove (13), the both sides fixedly connected with sealing spring (15) of slip ring (14), the one end and the quiet sealing washer (16) fixed connection of sealing spring (15), and the structure of piston rod seal (5) and piston seal (8) is the same.

2. The hydraulic cylinder for construction machinery capable of reducing the frequency of replacing the sealing ring according to claim 1, wherein the sealing band (17) is installed in the static sealing ring (16) in an inclined manner, and one end of the pushing block (19) is inserted into the static sealing ring (16) and is pressed against the sealing band (17).

3. The engineering mechanical hydraulic cylinder capable of reducing the replacement frequency of the sealing ring is characterized in that one end of the connector (12) is provided with a buffer sleeve (11), one end of the piston (9) is tightly pressed on the buffer sleeve (11), the buffer sleeve (11) comprises a fixed sleeve (20), a main buffer spring (21) and a sliding sleeve (22), one end of the fixed sleeve (20) is fixedly connected with the piston rod (1), the sliding sleeve (22) is slidably mounted on the outer side of the connector (12), one end of the sliding sleeve (22) is fixedly connected with the piston (9), the fixed sleeve (20) is slidably connected with the sliding sleeve (22), and two ends of the main buffer spring (21) are fixedly sleeved on the fixed sleeve (20) and the sliding sleeve (22) respectively.

4. The hydraulic cylinder for engineering machinery capable of reducing the replacement frequency of the sealing ring according to claim 3, wherein the buffer sleeve (11) further comprises an auxiliary buffer groove (23), an auxiliary sliding ring (24) and an auxiliary spring (25), the auxiliary buffer groove (23) is formed in the surface of the connecting head (12), the auxiliary sliding ring (24) is fixedly installed on the lower side of the sliding sleeve (22), the auxiliary sliding ring (24) is slidably installed in the auxiliary buffer groove (23), the auxiliary spring (25) is installed in the auxiliary buffer groove (23), and one end of the auxiliary spring (25) is fixedly connected with the auxiliary sliding ring (24).

5. The hydraulic cylinder of the engineering machinery capable of reducing the replacement frequency of the sealing ring is characterized in that an anti-fouling ring (6) and an anti-wear ring (7) are arranged on the outer side of one end of the piston (9), and a nut (10) is screwed at one end of the connector (12).

6. The hydraulic cylinder for engineering machinery capable of reducing the replacement frequency of the sealing ring according to claim 1, wherein a dust ring (4) is arranged at one end of the end cover (2), and the piston rod (1) is slidably mounted inside the dust ring (4).