CN111828432A

CN111828432A - Hydraulic oil cylinder assembly

Info

Publication number: CN111828432A
Application number: CN202010673706.XA
Authority: CN
Inventors: 胡单; 张继
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2020-10-27

Abstract

The invention relates to the technical field of application of hydraulic cylinders, in particular to a hydraulic cylinder assembly which comprises a pipe body, a piston rod, a first connecting pipe, a first cushion pad, a communicating pipe, a connector, a piston, a first sealing ring, a second sealing ring, a fixing rod, a first nut, a fixing block, a limiting rod, a second cushion pad, an end cover, a sealing pad, a third sealing ring, a limiting plate, a dustproof pad, a fixing plate, a screw rod, a second nut and a second connecting pipe. The hydraulic oil cylinder is simple in structure and convenient to operate, the buffer cushion is designed to be beneficial to effectively increasing the buffer capacity of the piston when the piston moves, the problem that the piston is damaged due to collision with the pipe body when the piston moves rapidly is avoided, and the hydraulic oil cylinder is beneficial to long-time use; according to the invention, the design of the limiting plate is convenient for limiting and mounting the dustproof pad, the connection part of the piston rod and the end cover is convenient for dustproof protection, and the dustproof pad is convenient to fix while dust is effectively prevented from entering.

Description

Hydraulic oil cylinder assembly

Technical Field

The invention relates to the technical field of application of hydraulic oil cylinders, in particular to a hydraulic oil cylinder assembly.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion or swinging motion, has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, thereby being widely applied to hydraulic systems of various machines, and the output force of the hydraulic cylinder is in direct proportion to the effective area of a piston and the pressure difference of two sides of the piston; 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 damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

The existing hydraulic oil cylinder is a hydraulic element which utilizes the pressurization of hydraulic oil to realize the movement of a piston rod, but for a hydraulic oil cylinder assembly, the problem that the piston is damaged due to the collision between the piston and a pipe body caused by the excessively high speed of the hydraulic oil cylinder during the movement is not favorable for the long-time use of the hydraulic oil cylinder; the end cover of the hydraulic oil cylinder is not beneficial to installation, the joint of the end cover and the piston rod is likely to pollute the hydraulic oil due to the entering of dust, the service life of the hydraulic oil cylinder is shortened, and the installation of a dustproof pad is not beneficial to installation during installation, so that the inconvenience in operation is caused. Therefore, a hydraulic cylinder assembly is proposed to address the above problems.

Disclosure of Invention

The present invention is directed to a hydraulic cylinder assembly to solve the above problems.

The invention achieves the aim through the following technical scheme, and the hydraulic oil cylinder assembly comprises a piston rod, a buffer mechanism and an installation mechanism, wherein the piston rod is positioned in a pipe body; the buffer mechanism comprises a first buffer cushion, a piston and a second buffer cushion, the interior of the tube body is fixedly connected with a first sealing ring, the end part of the piston rod is fixedly connected with a fixed rod, the end part of the fixed rod is in threaded connection with a first nut, the fixed rod is in penetrating connection with the middle part of the piston, the outer wall and the inner wall of the piston are respectively fixedly connected with the first sealing ring and the second sealing ring, the end part of the piston rod is fixedly connected with a fixed block, the side wall of the fixed block is fixedly connected with a limiting rod, and the other side wall of the fixed block is fixedly connected with the second buffer; the installation mechanism comprises an end cover, a limiting plate and a fixing plate, the end part of the pipe body is connected with the end cover in a laminating mode, a sealing gasket is clamped between the end cover and the pipe body, the inner wall of the end cover is fixedly connected with a third sealing ring, a piston rod is in through connection with the limiting plate, a dustproof gasket is clamped between the limiting plate and the end cover, the outer wall of the limiting plate is fixedly connected with the fixing plate, the fixing plate is in through connection with a screw rod, and the end part of the screw rod is in threaded connection with.

Preferably, the end parts of the pipe body and the piston rod are respectively and fixedly connected with the first connecting pipe and the second connecting pipe, the first connecting pipe is communicated with the inside of the pipe body, and a through hole used for moving the first nut is formed in the connecting part of the pipe body and the first connecting pipe.

Preferably, the two ends of the pipe body are respectively communicated with the two communicating pipes, the ends of the two connecting pipes are fixedly connected with the joints, and the joints are connected with pipelines connected with oil transfer pumps.

Preferably, the cross-sectional area of the end cover is a T-shaped structure, the end cover is inserted into the pipe body, and the inside of the end cover is connected with the piston rod in a sliding mode.

Preferably, the number of screw rod is a plurality of, a plurality of the screw rod is circular structure evenly distributed, and every the screw rod all with body and end cover edge through connection.

Preferably, the piston is connected with the inside of the pipe body in a sliding mode, the first sealing ring and the second sealing ring on the outer wall of the piston and the inner wall of the piston are of circular ring-shaped structures, and the first sealing ring and the second sealing ring are respectively in contact with the inner wall of the pipe body and the outer wall of the fixing rod.

Preferably, the piston rod cup joints with the second blotter that is the ring column structure, the second blotter contact has the end cover lateral wall, the fixed block lateral wall of piston rod tip is equipped with two gag lever posts, and two gag lever posts all peg graft with piston inside.

Preferably, the limiting plate is of a U-shaped structure in cross section, the limiting plate is attached to the end cover, and the dustproof pad between the limiting plate and the end cover is sleeved with the piston rod.

Preferably, the third sealing ring is of a circular ring-shaped structure, the third sealing ring is sleeved with the piston rod, and the second connecting pipe at the end part of the piston rod is of a circular structure.

Preferably, the fixing plate is of a circular ring-shaped structure, the fixing plate is connected with the plurality of combined screws in a penetrating manner, and second nuts at the ends of the screws are in contact with the side wall of the fixing plate.

The invention has the beneficial effects that:

(1) the design of the buffer pad is beneficial to effectively increasing the buffer capacity of the piston when the piston moves, avoiding the problem of piston damage caused by collision with the pipe body when the piston moves rapidly, and being beneficial to the long-time use of the hydraulic oil cylinder;

(2) according to the invention, the design of the limiting plate is convenient for limiting and installing the dustproof pad, the connection part of the piston rod and the end cover is convenient for dustproof protection, the dustproof pad is convenient to fix while dust is effectively prevented from entering, the operation is convenient, and the design of the screw and the second nut is convenient for installing and fixing the end cover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 inventive exercise.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic side view of the connection between the tube and the end cap according to the present invention;

FIG. 4 is a schematic diagram of the right-view structure of the exterior of the present invention.

In the figure: 1. the sealing device comprises a pipe body, 2, a piston rod, 3, a first connecting pipe, 4, a first cushion pad, 5, a communicating pipe, 6, a joint, 7, a piston, 8, a first sealing ring, 9, a second sealing ring, 10, a fixing rod, 11, a first nut, 12, a fixing block, 13, a limiting rod, 14, a second cushion pad, 15, an end cover, 16, a sealing pad, 17, a third sealing ring, 18, a limiting plate, 19, a dustproof pad, 20, a fixing plate, 21, a screw rod, 22, a second nut, 23 and a second connecting pipe.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1-4, a hydraulic cylinder assembly includes a piston rod 2 inside a tube 1, a buffering mechanism and a mounting mechanism; the buffer mechanism comprises a first buffer cushion 4, a piston 7 and a second buffer cushion 14, the interior of the tube body 1 is fixedly connected with a first sealing ring 8, the end part of the piston rod 2 is fixedly connected with a fixed rod 10, the end part of the fixed rod 10 is in threaded connection with a first nut 11 and is used for connecting the piston 7 and the piston rod 2, the fixed rod 10 is in penetrating connection with the middle part of the piston 7, the outer wall and the inner wall of the piston 7 are respectively and fixedly connected with the first sealing ring 8 and a second sealing ring 9, the end part of the piston rod 2 is fixedly connected with a fixed block 12, the side wall of the fixed block 12 is fixedly connected with a limiting rod 13, and the other side wall of the fixed block 12 is fixedly connected with the second buffer cushion 14 and is; installation mechanism includes end cover 15, limiting plate 18 and

fixed plate

20, 1 tip of body is connected with the laminating of end cover 15, the centre gripping has sealed the pad 16 between end cover 15 and the

body

1, and 15 inner walls of end cover and the 17 fixed connection of third sealing washer,

piston rod

2 and 18 through connection of limiting plate, the centre gripping has dustproof pad 19 between limiting plate 18 and the

end cover

15, and 18 outer walls of limiting plate and 20 fixed connection of fixed plate, fixed

plate

20 and 21 through connection of screw rod, and 21 tip of screw rod and second nut 22 threaded connection for be connected between end cover 15 and the body 1.

The end parts of the tube body 1 and the piston rod 2 are respectively fixedly connected with a first connecting tube 3 and a second connecting tube 23, the first connecting tube 3 is communicated with the interior of the tube body 1, and a through hole for moving a first nut 11 is formed at the joint of the tube body 1 and the first connecting tube 3, so that the connection of a hydraulic oil cylinder is facilitated, and a piston 7 is convenient to contact a first cushion pad 4; the two ends of the pipe body 1 are respectively communicated with the two communicating pipes 5, the ends of the two connecting pipes are fixedly connected with the joints 6, and the joints 6 are connected with a pipeline connected with an oil transfer pump, so that hydraulic oil can be conveniently conveyed, and the piston rod 2 can be conveniently moved; the cross section area of the end cover 15 is of a T-shaped structure, the end cover 15 is inserted into the pipe body 1, and the inside of the end cover 15 is connected with the piston rod 2 in a sliding mode, so that the end cover 15 can be conveniently connected, and the piston rod 2 can be conveniently moved; the number of the screw rods 21 is a plurality, the screw rods 21 are uniformly distributed in a circular structure, and each screw rod 21 is connected with the edge of the pipe body 1 and the edge of the end cover 15 in a penetrating manner, so that the end cover 15 is fixed conveniently, and the end cover 15 is convenient to mount; the piston 7 is connected with the interior of the pipe body 1 in a sliding mode, the first sealing ring 8 and the second sealing ring 9 on the outer wall and the inner wall of the piston 7 are both of annular structures, and the first sealing ring 8 and the second sealing ring 9 are respectively in contact with the inner wall of the pipe body 1 and the outer wall of the fixing rod 10, so that the piston 7 can move conveniently, and the sealing performance can be improved conveniently; the piston rod 2 is sleeved with a second buffer cushion 14 in a circular ring structure, the second buffer cushion 14 is in contact with the side wall of an end cover 15, two limiting rods 13 are arranged on the side wall of a fixed block 12 at the end part of the piston rod 2, and the two limiting rods 13 are inserted into the piston 7, so that the second buffer cushion 14 can be conveniently installed, and the piston 7 can be conveniently protected; the section of the limiting plate 18 is of a U-shaped structure, the limiting plate 18 is connected with the end cover 15 in an attaching mode, and the dustproof pad 19 between the limiting plate 18 and the end cover 15 is sleeved with the piston rod 2, so that the limiting of the dustproof pad 19 is facilitated, and the installation of the dustproof pad 19 is facilitated; the third sealing ring 17 is of an annular structure, the third sealing ring 17 is sleeved with the piston rod 2, and the second connecting pipe 23 at the end part of the piston rod 2 is of a circular structure, so that the sealing property between the piston rod 2 and the end cover 15 is improved, and the leakage of hydraulic oil is avoided; the fixing plate 20 is of a circular ring-shaped structure, the fixing plate 20 is connected with the plurality of screw rods 21 in a penetrating mode, and the second nuts 22 at the end portions of the screw rods 21 are in contact with the side walls of the fixing plate 20, so that the fixing of the fixing plate 20 is facilitated, and the installation of the limiting plate 18 is facilitated.

When the invention is used, the end cover 15 is sleeved on the piston rod 2, the fixing rod 10 at the end part of the piston rod 2 is placed inside the piston 7, the piston 7 is limited by the matching of the first nut 11 and the fixing rod 10, the piston rod 2 drives the fixing block 12 and the limiting rod 13 to move simultaneously, so that the limiting rod 13 moves to the inside of the piston 7, the piston 7 is limited, the connection is convenient, the piston 7 and the piston rod 2 are placed inside the tube body 1, the end cover 15 is tightly pressed at the end part of the tube body 1, the end cover 15 tightly presses the sealing gasket 16, the sealing performance is improved, the limiting plate 18 and the fixing plate 20 are tightly attached to the side wall of the end cover 15, the dust-proof gasket 19 is tightly pressed by the limiting plate 18, the screw 21 penetrates through the fixing plate 20, the end cover 15 and the tube body 1, the end cover 15 and the fixing plate 20 are fixed at the end part of the tube, the end cover 15 is convenient to fix, and the dustproof pad 19 is convenient to limit;

when the hydraulic oil pump is used, a pipeline connected with the oil pump is connected with the two connectors 6, hydraulic oil is conveyed into the pipe body 1 through the communicating pipe 5 on one side, so that pressure is generated on one side of the piston 7, hydraulic oil on the other side of the piston 7 is pumped out to form negative pressure, the piston 7 is further pushed to move, the piston rod 2 is driven to move simultaneously, the piston 7 contacts the first buffer pad 4 when moving to the leftmost side, the first nut 11 is moved to a through hole at the joint of the pipe body 1 and the first connecting pipe 3, when the piston 7 moves to the rightmost side, the second buffer pad 14 on the piston rod 2 contacts the side end of the end cover 15, the buffer force of the piston 7 during moving is conveniently improved through the design of the first buffer pad 4 and the second buffer pad 14, the problem of damage of the piston 7 is avoided, and the design of the first sealing ring 8 and the second sealing ring 9 is beneficial to improving the sealing performance, the design of the third sealing ring 17 is favorable for improving the sealing performance between the piston rod 2 and the end cover 15, and the design of the dustproof gasket 19 is favorable for prolonging the service life of the hydraulic oil cylinder, so that dust is prevented from entering the hydraulic oil cylinder.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a hydraulic cylinder assembly which characterized in that: comprises a piston rod (2) positioned in a pipe body (1), a buffer mechanism and a mounting mechanism; the buffer mechanism comprises a first buffer cushion (4), a piston (7) and a second buffer cushion (14), the interior of the tube body (1) is fixedly connected with a first sealing ring (8), the end part of the piston rod (2) is fixedly connected with a fixing rod (10), the end part of the fixing rod (10) is in threaded connection with a first nut (11), the fixing rod (10) is in penetrating connection with the middle of the piston (7), the outer wall and the inner wall of the piston (7) are respectively fixedly connected with the first sealing ring (8) and the second sealing ring (9), the end part of the piston rod (2) is fixedly connected with a fixing block (12), the side wall of the fixing block (12) is fixedly connected with a limiting rod (13), and the other side wall of the fixing block (12) is fixedly connected with the second buffer cushion (14); installation mechanism includes end cover (15), limiting plate (18) and fixed plate (20), body (1) tip is connected with end cover (15) laminating, the centre gripping has sealed pad (16) between end cover (15) and body (1), and end cover (15) inner wall and third sealing washer (17) fixed connection, piston rod (2) and limiting plate (18) through connection, the centre gripping has dustproof pad (19) between limiting plate (18) and end cover (15), and limiting plate (18) outer wall and fixed plate (20) fixed connection, fixed plate (20) and screw rod (21) through connection, and screw rod (21) tip and second nut (22) threaded connection.

2. A hydraulic cylinder assembly as claimed in claim 1, wherein: the end parts of the pipe body (1) and the piston rod (2) are respectively fixedly connected with the first connecting pipe (3) and the second connecting pipe (23), the first connecting pipe (3) is communicated with the inside of the pipe body (1), and a through hole used for moving the first nut (11) is formed in the joint of the pipe body (1) and the first connecting pipe (3).

3. A hydraulic cylinder assembly as claimed in claim 1, wherein: the two ends of the pipe body (1) are respectively communicated with the two communicating pipes (5), the ends of the two connecting pipes are fixedly connected with the joints (6), and the joints (6) are connected with pipelines connected with oil transfer pumps.

4. A hydraulic cylinder assembly as claimed in claim 1, wherein: the cross-sectional area of the end cover (15) is of a T-shaped structure, the end cover (15) is inserted into the pipe body (1), and the inside of the end cover (15) is connected with the piston rod (2) in a sliding mode.

5. A hydraulic cylinder assembly as claimed in claim 1, wherein: the quantity of screw rod (21) is a plurality of, a plurality of screw rod (21) are circular structure evenly distributed, and every screw rod (21) all with body (1) and end cover (15) edge through connection.

6. A hydraulic cylinder assembly as claimed in claim 1, wherein: piston (7) and the inside sliding connection of body (1), first sealing washer (8) and second sealing washer (9) of piston (7) outer wall and inner wall all are ring form structure, and first sealing washer (8) and second sealing washer (9) have body (1) inner wall and dead lever (10) outer wall with contacting respectively.

7. A hydraulic cylinder assembly as claimed in claim 1, wherein: piston rod (2) cup joints with second blotter (14) that are the ring column structure, second blotter (14) contact has end cover (15) lateral wall, fixed block (12) lateral wall of piston rod (2) tip is equipped with two gag lever posts (13), and two gag lever posts (13) all peg graft with piston (7) inside.

8. A hydraulic cylinder assembly as claimed in claim 1, wherein: the limiting plate (18) is of a U-shaped structure in cross section, the limiting plate (18) is attached to the end cover (15), and the dustproof pad (19) between the limiting plate (18) and the end cover (15) is sleeved with the piston rod (2).

9. A hydraulic cylinder assembly as claimed in claim 1, wherein: the third sealing ring (17) is of a circular ring-shaped structure, the third sealing ring (17) is sleeved with the piston rod (2), and a second connecting pipe (23) at the end part of the piston rod (2) is of a circular structure.

10. A hydraulic cylinder assembly as claimed in claim 1, wherein: the fixing plate (20) is of a circular ring-shaped structure, the fixing plate (20) is connected with a plurality of screw rods (21) in a penetrating mode, and second nuts (22) at the end portions of the screw rods (21) are in contact with the side wall of the fixing plate (20).