CN211039231U

CN211039231U - Adjustable hydraulic cylinder

Info

Publication number: CN211039231U
Application number: CN201922115358.XU
Authority: CN
Inventors: 李钢; 鲁海石; 陈素娟; 宛锐
Original assignee: FUSHUN TIANBAO HEAVY INDUSTRY HYDRAULIC MANUFACTURING CO LTD
Current assignee: FUSHUN TIANBAO HEAVY INDUSTRY HYDRAULIC MANUFACTURING CO LTD
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-07-17
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a pneumatic cylinder with adjustable, the pneumatic cylinder comprises cylinder, piston and piston rod, the buffer board is installed on the inside top of cylinder, go up and install buffer spring between buffer board and the cylinder top, the buffer board is installed down to the inside below of cylinder. The utility model discloses in, install buffer board and lower buffer board respectively on the inside bottom and the top of cylinder, go up buffer board and install buffer spring and lower buffer spring down between buffer board and cylinder top and the bottom, through setting up buffer spring and lower buffer spring, be convenient for when the cylinder terminal is transported to the piston rod, make piston and buffer board contact, thereby make the piston extrude the buffer board owing to the inertia that the motion produced, later the buffer board extrudees the buffer spring of bottom, make buffer spring cushion the inertia of piston, thereby prevent that the piston from colliding with the inside emergence of cylinder under the effect of impact force, the service life of pneumatic cylinder is improved.

Description

Adjustable hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field especially relates to a pneumatic cylinder with adjustable.

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 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, and the hydraulic cylinder basically comprises a cylinder barrel, a cylinder cover, the piston, a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

The prior art has the following problems:

When the hydraulic cylinder runs, a piston rod reciprocates in a cylinder barrel, the piston rod has certain mass and has large momentum under the drive of pressure, when the piston rod runs to a terminal, the moving piston rod often has mechanical collision with a cylinder head and a cylinder bottom, so that large impact pressure and noise are generated, and the impact collision can cause the damage of the hydraulic cylinder and the damage of related parts such as piping, valves, instruments and the like in related systems, so that the performance of mechanical equipment is greatly influenced.

We have therefore proposed an adjustable hydraulic cylinder which addresses the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing: an adjustable hydraulic cylinder.

The technical scheme of the utility model: the utility model provides a pneumatic cylinder with adjustable, includes the pneumatic cylinder, the pneumatic cylinder comprises cylinder, piston and piston rod, the buffer board is installed on the inside top of cylinder, go up and install buffer spring between buffer board and the cylinder top, the buffer board is installed down to the inside below of cylinder, and is provided with down buffer spring down between buffer board and the cylinder bottom, the inside buffer board that is located of cylinder installs the piston between buffer board and the lower buffer board, and piston top surface mounting has the piston rod, and the piston rod runs through pneumatic cylinder top surface and extends to the external world.

Preferably, the cylinder barrel consists of an inner barrel and an outer barrel, a cavity is formed between the outer barrel and the inner barrel, sound-absorbing cotton is filled in the cavity, and a wear-resistant layer is arranged on the surface of the inner wall of the inner barrel.

Preferably, the top end and the bottom end of the hydraulic cylinder are respectively provided with a top cover and a bottom cover through fasteners, and the contact part of the piston rod and the top cover is provided with a sealing ring.

Preferably, an oil inlet hole is formed in the upper portion of the surface of the hydraulic cylinder, and an oil outlet hole is formed in the lower portion of the surface of the hydraulic cylinder.

Preferably, the surface of the upper buffer plate is provided with a through hole in a penetrating manner, and the diameter of the inner side of the through hole is larger than that of the outer side of the piston rod.

Preferably, the outer diameter of the piston is equal to the inner diameter of the inner cylinder.

Compared with the prior art, the utility model has the advantages that;

1. The utility model discloses, install buffer board and lower buffer board respectively on the inside bottom and the top of cylinder, go up buffer board and install buffer spring and lower buffer spring down between buffer board and cylinder top and the bottom, through setting up buffer spring and lower buffer spring, be convenient for when the cylinder terminal is transported to the piston rod, make piston and buffer board contact, thereby make the piston extrude the buffer board owing to the inertia that the motion produced, later the buffer board extrudees the buffer spring of bottom, make buffer spring cushion the inertia of piston, thereby prevent that the piston from colliding with the inside emergence of cylinder under the effect of impact force, the service life of pneumatic cylinder is improved.

2. The utility model discloses, the cylinder is double-deck setting, constitute by inner tube and urceolus, the cavity has been seted up simultaneously between inner tube and urceolus, through setting up the cylinder into bilayer structure, be convenient for isolate the noise that the piston produced when the inside back and forth motion of cylinder, thereby noise pollution is prevented, it has the sound cotton to inhale in the inside packing of cavity simultaneously, it can be fine to adsorb the noise that produces to inhale the sound cotton, secondly, the inner wall surface at the inner tube is provided with the wearing layer, through setting up the wearing layer, be convenient for improve the wear resistance of inner tube, thereby prevent that the piston from producing the friction damage to the inner tube surface when the inner tube inner wall back and forth motion, the service life of cylinder.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an adjustable hydraulic cylinder according to the present invention;

Fig. 2 is a schematic view of the interior of a cylinder barrel of the adjustable hydraulic cylinder provided by the present invention;

Fig. 3 is a schematic view of an adjustable hydraulic cylinder buffer plate provided by the present invention;

Fig. 4 is a top view of the adjustable hydraulic cylinder provided by the present invention.

Illustration of the drawings:

1. A hydraulic cylinder; 2. a cylinder barrel; 3. an oil inlet hole; 4. an upper buffer plate; 5. an upper buffer spring; 6. a top cover; 7. a piston rod; 8. a piston; 9. a lower buffer plate; 10. an oil outlet hole; 11. a bottom cover; 12. a lower buffer spring; 13. a wear layer; 14. an inner barrel; 15. a cavity; 16. an outer cylinder; 17. sound-absorbing cotton; 18. a through hole; 19. a seal ring; 20. a fastener.

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 work 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", 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 simplification of 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; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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. 1-4, an adjustable hydraulic cylinder comprises a hydraulic cylinder 1, wherein the hydraulic cylinder 1 is composed of a cylinder barrel 2, a piston 8 and a piston rod 7, an upper buffer plate 4 is installed at the top end inside the cylinder barrel 2, an upper buffer spring 5 is installed between the upper buffer plate 4 and the top end of the cylinder barrel 2, a lower buffer plate 9 is installed below the inside of the cylinder barrel 2, a lower buffer spring 12 is arranged between the lower buffer plate 9 and the bottom end of the cylinder barrel 2, the piston 8 is installed between the upper buffer plate 4 and the lower buffer plate 9 inside the cylinder barrel 2, the piston rod 7 is installed on the top surface of the piston 8, and the piston rod 7 penetrates through the top surface of the hydraulic cylinder 1.

In this embodiment: through setting up buffer board 4, lower buffer board 9, go up buffer spring 5 and lower buffer spring 12, be convenient for when piston rod 7 transports 2 terminals of cylinder, make piston 8 and buffer board contact, thereby make piston 8 extrude the buffer board owing to the inertia that the motion produced, later the buffer board extrudees the buffer spring of bottom, make buffer spring cushion piston 8's inertia, thereby prevent that piston 8 from colliding with 2 inside emergence of cylinder under the effect of impact force, improve pneumatic cylinder 1's life.

Specifically, the cylinder barrel 2 is composed of an inner barrel 14 and an outer barrel 16, a cavity 15 is formed between the outer barrel 16 and the inner barrel 14, sound-absorbing cotton 17 is filled in the cavity 15, and a wear-resistant layer 13 is arranged on the surface of the inner wall of the inner barrel 14.

In this embodiment: through setting up cylinder 2 into bilayer structure, be convenient for carry out completely cut off the noise that piston 8 produced when 2 inside reciprocating motions of cylinder, inhale sound cotton 17 through filling, inhale sound cotton 17 can be fine adsorb the noise that produces.

Specifically, the top end and the bottom end of the hydraulic cylinder 1 are respectively provided with a top cover 6 and a bottom cover 11 through fasteners 20, and the contact part of the piston rod 7 and the top cover 6 is provided with a sealing ring 19.

In this embodiment: through setting up top cap 6 and bottom 11, be convenient for to the sealed of pneumatic cylinder 1, through setting up sealing washer 19, be convenient for outside dust gets into inside the pneumatic cylinder 1.

Specifically, an oil inlet hole 3 is formed above the surface of the hydraulic cylinder 1, and an oil outlet hole 10 is formed below the surface of the hydraulic cylinder 1.

In this embodiment: through setting up inlet port 3 and oil outlet 10, the input and the discharge of the lubricating oil of being convenient for.

Specifically, a through hole 18 is formed in the surface of the upper buffer plate 4 in a penetrating manner, and the inside diameter of the through hole 18 is larger than the outside diameter of the piston rod 7.

In this embodiment: the through hole 18 is opened to facilitate the penetration of the piston rod 7.

Specifically, the outside diameter of the piston 8 is equal to the inside diameter of the inner cylinder 14.

In this embodiment: the outside diameter of the piston 8 is set to be equal to the inside diameter of the inner cylinder 14, so that the sealing performance of the hydraulic cylinder 1 is ensured.

The working principle is as follows: when the double-layer hydraulic cylinder is used, firstly, the hydraulic cylinder 1 is installed at a specified place and then is used, meanwhile, the bottom end and the top end in the cylinder barrel 2 are respectively provided with the upper buffer plate 4 and the lower buffer plate 9, so that when the piston rod 7 is conveyed to the terminal of the cylinder barrel 2, the piston 8 is in contact with the buffer plates, the piston 8 extrudes the buffer plates due to inertia generated by movement, then the buffer plates extrude the buffer springs at the bottom end, the buffer springs buffer the inertia of the piston 8, the piston 8 is prevented from colliding with the inside of the cylinder barrel 2 under the action of impact force, the service life of the hydraulic cylinder 1 is prolonged, meanwhile, the cylinder barrel 2 is arranged in a double-layer mode, the noise generated when the piston 8 reciprocates in the cylinder barrel 2 is conveniently isolated by arranging the cylinder barrel 2 in a double-layer structure, finally, the inner wall surface of the inner barrel 14 is provided with the wear-resistant layer 13, thereby preventing the piston 8 from generating friction damage to the surface of the inner cylinder 14 when the inner wall of the inner cylinder 14 reciprocates, and prolonging the service life of the cylinder 2.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a pneumatic cylinder with adjustable, includes pneumatic cylinder (1), its characterized in that, pneumatic cylinder (1) comprises cylinder (2), piston (8) and piston rod (7), buffer board (4) are installed on the inside top of cylinder (2), go up and install buffer spring (5) between buffer board (4) and cylinder (2) top, buffer board (9) are installed down to cylinder (2) inside below, and are provided with down buffer spring (12) between buffer board (9) and cylinder (2) bottom down, cylinder (2) inside is located and installs piston (8) between buffer board (4) and lower buffer board (9), and piston (8) top surface mounting has piston rod (7), and piston rod (7) run through pneumatic cylinder (1) top surface and extend to the external world.

2. The adjustable hydraulic cylinder according to claim 1, wherein the cylinder (2) is composed of an inner cylinder (14) and an outer cylinder (16), a cavity (15) is formed between the outer cylinder (16) and the inner cylinder (14), sound-absorbing cotton (17) is filled in the cavity (15), and a wear-resistant layer (13) is arranged on the surface of the inner wall of the inner cylinder (14).

3. The adjustable hydraulic cylinder as claimed in claim 1, wherein the top end and the bottom end of the hydraulic cylinder (1) are respectively provided with a top cover (6) and a bottom cover (11) through fasteners (20), and the contact part of the piston rod (7) and the top cover (6) is provided with a sealing ring (19).

4. The adjustable hydraulic cylinder according to claim 1, wherein an oil inlet (3) is formed above the surface of the hydraulic cylinder (1), and an oil outlet (10) is formed below the surface of the hydraulic cylinder (1).

5. The adjustable hydraulic cylinder according to claim 1, wherein a through hole (18) is formed in the surface of the upper cushion plate (4) in a penetrating manner, and the inside diameter of the through hole (18) is larger than the outside diameter of the piston rod (7).

6. Adjustable hydraulic cylinder according to claim 1, characterized in that the outside diameter of the piston (8) is equal to the inside diameter of the inner cylinder (14).