CN218953692U

CN218953692U - Piston cylinder mechanism

Info

Publication number: CN218953692U
Application number: CN202223069833.2U
Authority: CN
Inventors: 潘岗; 王龙
Original assignee: Zhengzhou Chaofan Control Valve Co ltd
Current assignee: Zhengzhou Chaofan Control Valve Co ltd
Priority date: 2022-11-19
Filing date: 2022-11-19
Publication date: 2023-05-02
Anticipated expiration: 2032-11-19

Abstract

The utility model discloses a piston cylinder mechanism, which relates to the technical field of piston cylinders and comprises a cylinder barrel, wherein two ends of the cylinder barrel are respectively connected with a cylinder bottom and a cylinder cover, a piston is arranged in the cylinder barrel, the middle part of one side of the piston is connected with a piston rod, the middle part of the cylinder cover is provided with a groove body coaxial with the piston rod, a sealing guide sleeve is arranged in the groove body, the piston rod is jointed and penetrates through the sealing guide sleeve, a wear-resisting ring is coaxially arranged on the piston, a plurality of mounting grooves are formed in the periphery of the piston, a first sealing ring is arranged on each mounting groove, and the wear-resisting ring and the first sealing ring are jointed with the inner wall of the cylinder barrel. According to the utility model, the wear-resistant ring is additionally arranged on the piston and is in contact with the inner wall of the cylinder barrel, so that the gap between the piston and the cylinder barrel is increased, the friction between the piston and the cylinder barrel is reduced, the state of sealing and sliding only by the first sealing ring is changed, and the service lives of the piston, the cylinder barrel and the first sealing ring are prolonged.

Description

Piston cylinder mechanism

Technical Field

The utility model relates to the technical field of piston cylinders, in particular to a piston cylinder mechanism.

Background

The piston cylinder is a structural form of hydraulic pressure/cylinder, the input is pressure and flow, the output is thrust and speed, the piston cylinder comprises a single-rod piston cylinder and a double-rod piston cylinder according to the difference of use scenes and structures, the piston cylinder is widely applied to mechanisms such as hydraulic cylinders, cylinders and pneumatic actuators, in the field use process, the piston cylinder is responded by surrounding environment and air source conditions, the use effect has great difference, the cylinder body sealing element material and sealing form have high requirements, most of the piston cylinder is sealed by the sealing ring and the cylinder body, the sealing element is always damaged in the use process, and the piston friction cylinder body leads to sealing failure and further causes the intercommunication of cavities on two sides of the piston in the cylinder body to form internal leakage, thereby affecting the use of equipment.

Therefore, it is necessary to invent a piston cylinder mechanism to solve the above-mentioned problems.

Disclosure of Invention

The present utility model is directed to a piston cylinder mechanism, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a piston cylinder mechanism, includes the cylinder, the both ends of cylinder are connected with cylinder bottom and cylinder cap respectively, the inside of cylinder is equipped with the piston, one side middle part of piston is connected with the piston rod, its the middle part of cylinder cap has been seted up rather than coaxial cell body, install sealed uide bushing in the cell body, the piston rod laminating runs through sealed uide bushing, coaxial mounting has the wear ring on the piston, a plurality of mounting groove has been seted up to the periphery of piston, install first sealing washer on the mounting groove, leave the clearance between the inner wall of piston and cylinder, wear ring and first sealing washer all laminate with the inner wall of cylinder.

Optionally, a through maintenance hole is formed in the cylinder bottom, and a sealing bolt is installed on the maintenance hole for sealing.

Optionally, a threaded connection hole is coaxially formed in the middle of the piston and used for detachable connection of the piston rod.

Optionally, buffer mounting grooves are formed in two sides of the piston, and buffer pads are mounted in the buffer mounting grooves.

Optionally, sealed uide bushing includes installation cover, guide ring and second sealing washer are all installed in the inside of installation cover, the inboard of guide ring and second sealing washer all is laminated with the piston rod.

Optionally, two second sealing rings are provided, and the two second sealing rings are respectively arranged at two sides of the guide ring.

Optionally, the wear-resisting ring is installed at the middle part of piston, the wear-resisting ring includes go-between and wear-resisting ring, the wear-resisting ring sets up to two and coaxial coupling in the both ends of go-between, go-between and wear-resisting ring are integrated into one piece structure, and the two cross-section is H shape structure, the inner wall laminating of wear-resisting ring and cylinder.

Optionally, the first sealing ring and the second sealing ring are both Y-shaped sealing rings.

The utility model has the technical effects and advantages that:

according to the utility model, the wear-resistant ring is additionally arranged on the piston and is contacted with the inner wall of the cylinder barrel, so that the gap between the piston and the cylinder barrel is increased, the friction between the piston and the cylinder barrel is reduced, the wear-resistant ring is attached to the cylinder barrel, the state of sealing and sliding only by the first sealing ring is changed, and the service lives of the piston, the cylinder barrel and the first sealing ring are prolonged; the sealing guide sleeve is additionally arranged, so that the movement of the piston and the piston rod is stably guided, and the mechanical friction is reduced.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model.

FIG. 2 is a schematic cross-sectional view of a piston according to the present utility model.

FIG. 3 is a schematic cross-sectional view of a seal guide sleeve of the present utility model.

Fig. 4 is a schematic view of a partial enlarged structure at a in fig. 1 according to the present utility model.

In the figure: 1. a cylinder; 2. a cylinder bottom; 3. a cylinder cover; 4. a piston; 5. a piston rod; 6. sealing the guide sleeve; 601. a mounting sleeve; 602. a guide ring; 603. a second seal ring; 7. a wear ring; 701. a connecting ring; 702. a grinding ring; 8. a mounting groove; 9. a first seal ring; 10. maintaining the hole; 11. a sealing bolt; 12. a threaded connection hole; 13. buffer mounting groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The utility model provides a piston cylinder mechanism shown in figures 1-4, which comprises a cylinder barrel 1, wherein two ends of the cylinder barrel 1 are respectively connected with a detachable cylinder bottom 2 and a cylinder cover 3, the two ends of the cylinder barrel 1 are used for sealing, a piston 4 is arranged in the cylinder barrel 1, a piston rod 5 is connected in the middle of one side of the piston 4, a coaxial groove body is arranged in the middle of the cylinder cover 3, a sealing guide sleeve 6 is arranged in the groove body, the piston rod 5 is jointed and penetrates through the sealing guide sleeve 6, the piston rod 5 is jointed and slides with the sealing guide sleeve 6, the sealing guide sleeve 6 plays a role in stabilizing and guiding the movement of the piston 4 and the piston rod 5, mechanical friction is reduced, a sealing mechanism is arranged in the sealing guide sleeve 6, a sealing effect is played between the sealing guide sleeve 6 and the piston rod 5, a wear-resistant ring 7 is coaxially arranged on the piston 4, the wear-resistant ring 7 is jointed with the inner wall of the cylinder barrel 1, a gap is reserved between the piston 4 and the inner wall of the cylinder barrel 1, the wear-resistant ring 7 is contacted with the inner wall of the cylinder barrel 1, the gap between the piston 4 and the cylinder barrel 1 is increased, friction between the piston 4 and the cylinder barrel 1 is reduced, a plurality of mounting grooves 8 are arranged on the periphery of the piston 4, the sealing ring 9 is used for installing the sealing ring 9, and the sealing ring 9 is arranged on the sealing guide sleeve 4, and the sealing ring is used for sealing the cylinder barrel 1, and the sealing ring 9 is only has the sealing life-free between the sealing ring and the sealing ring 1.

The cylinder bottom 2 is provided with the through maintenance hole 10, the maintenance hole 10 is provided with the sealing bolt 11 for sealing, the sealing bolt 11 is disassembled, the oil injection head penetrates into the maintenance hole 10, a small amount of lubricating oil can be injected into the cylinder barrel 1, the lubricating effect of the mechanism is improved, mechanical friction is reduced, and the maintenance is convenient and quick, so that the piston 4, the cylinder barrel 1 and the first sealing ring 9 have longer service life.

A threaded connection hole 12 is coaxially arranged in the middle of the piston 4 and is used for detachable connection of the piston rod 5.

Buffer mounting grooves 13 are formed in two sides of the piston 4, buffer pads are mounted in the buffer mounting grooves 13, impact force of the piston 4 moving to the end is reduced, and service life of the lifting mechanism is prolonged.

The sealed uide bushing 6 includes installation cover 601, guide ring 602 and second sealing washer 603 are all installed in the inside of installation cover 601, guide ring 602 and the inboard of second sealing washer 603 all laminate with piston rod 5, guide ring 602 is the smooth metal ring cover of inner wall, play the effect of direction to the motion of piston 4 and piston rod 5, reduce mechanical friction, second sealing washer 603 plays sealed effect between to piston rod 5 and sealed uide bushing 6, prevent gas leakage or oil leak, influence the operation effect of mechanism.

The two second sealing rings 603 are arranged, the two second sealing rings 603 are respectively arranged on two sides of the guide ring 602, the two ends of the guide ring 602 are sealed, the sealing effect is good, and if the piston cylinder is a horizontal bar piston cylinder, the second sealing rings 603 of one end of the guide ring 602 far away from the piston 4 can play a good role in dust and water resistance.

The middle part at piston 4 is installed to wear-resisting ring 7, and wear-resisting ring 7 includes go-between 701 and wear-ring 702, and wear-ring 702 sets up to two and coaxial coupling at the both ends of go-between 701, and go-between 701 and wear-ring 702 are integrated into one piece structure, and the two cross-section is H shape structure, and the wear-ring 702 is laminated with the inner wall of cylinder 1, has reduced the area of contact of wear-resisting ring 7 and cylinder 1 inner wall, further reduces mechanical friction to wear-resisting ring 702 is two, has guaranteed the stability of wear-resisting ring 7 motion.

The first sealing ring 9 and the second sealing ring 603 are Y-shaped sealing rings, and have the characteristics of small friction resistance, stable operation and good pressure resistance.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present utility model can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a piston cylinder mechanism, includes cylinder (1), the both ends of cylinder (1) are connected with cylinder bottom (2) and cylinder cap (3) respectively, the inside of cylinder (1) is equipped with piston (4), one side middle part of piston (4) is connected with piston rod (5), its characterized in that: the cylinder cap is characterized in that the middle part of the cylinder cap (3) is provided with a coaxial groove body, a sealing guide sleeve (6) is arranged in the groove body, the piston rod (5) is attached to penetrate the sealing guide sleeve (6), the piston (4) is coaxially provided with a wear-resisting ring (7), the periphery of the piston (4) is provided with a plurality of mounting grooves (8), the mounting grooves (8) are provided with first sealing rings (9), gaps are reserved between the piston (4) and the inner wall of the cylinder barrel (1), and the wear-resisting ring (7) and the first sealing rings (9) are attached to the inner wall of the cylinder barrel (1).

2. A piston cylinder mechanism as claimed in claim 1, wherein: the cylinder bottom (2) is provided with a through maintenance hole (10), and the maintenance hole (10) is provided with a sealing bolt (11) for sealing.

3. A piston cylinder mechanism as claimed in claim 1, wherein: the middle part of piston (4) is coaxial to be seted up threaded connection hole (12) for the detachable connection of piston rod (5).

4. A piston cylinder mechanism as claimed in claim 1, wherein: buffer mounting grooves (13) are formed in two sides of the piston (4), and buffer pads are mounted in the buffer mounting grooves (13).

5. A piston cylinder mechanism as claimed in claim 1, wherein: the sealing guide sleeve (6) comprises a mounting sleeve (601), a guide ring (602) and a second sealing ring (603), wherein the guide ring (602) and the second sealing ring (603) are both arranged in the mounting sleeve (601), and the inner sides of the guide ring (602) and the second sealing ring (603) are both attached to the piston rod (5).

6. A piston cylinder mechanism as set forth in claim 5 wherein: the number of the second sealing rings (603) is two, and the two second sealing rings (603) are respectively arranged on two sides of the guide ring (602).

7. A piston cylinder mechanism as claimed in claim 1, wherein: the anti-wear ring (7) is installed in the middle of the piston (4), the anti-wear ring (7) comprises a connecting ring (701) and a wear ring (702), the wear ring (702) is arranged to be two ends of the connecting ring (701) and is coaxially connected with the two ends of the connecting ring, the connecting ring (701) and the wear ring (702) are of an integrated structure, the sections of the connecting ring and the wear ring are of an H-shaped structure, and the wear ring (702) is attached to the inner wall of the cylinder barrel (1).

8. A piston cylinder mechanism as set forth in claim 5 wherein: the first sealing ring (9) and the second sealing ring (603) are Y-shaped sealing rings.