CN210566028U

CN210566028U - Hydraulic oil cylinder

Info

Publication number: CN210566028U
Application number: CN201921054529.6U
Authority: CN
Inventors: 张道龙
Original assignee: Yangzhou Xuxin Pneumatic Hydraulic Equipment Co Ltd
Current assignee: Yangzhou Xuxin Pneumatic Hydraulic Equipment Co Ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-05-19
Anticipated expiration: 2029-07-08

Abstract

The utility model relates to the technical field of hydraulic cylinders, and discloses a hydraulic cylinder, which comprises a cylinder barrel, a piston rod arranged in the cylinder barrel and a piston positioned in the cylinder barrel, wherein the cylinder barrel wall of the cylinder barrel, which is close to two ends, is respectively communicated with an oil inlet pipe and an oil outlet pipe; the screens mechanism includes screens groove, spring, screens piece and a plurality of screens hole, and the screens groove is seted up on the piston rod is close to the pole wall of piston one end position, and the one end fixed connection of spring is connected at the tank bottom in screens groove, and the other end of spring is connected with the one end of screens piece. The utility model discloses make the stroke of piston can change according to equipment control needs to the suitability of pneumatic cylinder has been improved.

Description

Hydraulic oil cylinder

Technical Field

The utility model relates to a hydraulic cylinder technical field especially relates to a hydraulic cylinder.

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. However, the stroke of the piston in the hydraulic cylinder can not be changed according to the control requirement of equipment at present, so that the applicability of the hydraulic cylinder is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art hydraulic cylinder piston's stroke can not change according to equipment control needs to the problem of the suitability of pneumatic cylinder has been reduced, and a hydraulic cylinder that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a hydraulic cylinder comprises a cylinder barrel, a piston rod and a piston, wherein the piston rod is installed in the cylinder barrel, the piston is located in the cylinder barrel, the cylinder wall, close to two ends, of the cylinder barrel is respectively communicated with an oil inlet pipe and an oil outlet pipe, the piston is connected to the inner cylinder wall of the cylinder barrel in a sliding mode, one end, close to the piston rod, of the piston is fixedly connected with a piston pipe, one end, close to the piston, of the piston penetrates through a pipe opening of the piston pipe and extends into the piston pipe, and the piston rod is connected with the piston pipe through;

screens mechanism includes screens groove, spring, screens piece and a plurality of screens hole, the screens groove is seted up on the piston rod is close to the pole wall of piston one end position, the one end fixed connection of spring is at the tank bottom in screens groove, the other end of spring is connected with the one end of screens piece, a plurality of the screens hole is along the even equidistance of vertical direction of seting up on the pipe wall of piston pipe, the one end that the springs were kept away from to the screens piece passes the notch in screens groove and to the downthehole extension of a screens that wherein corresponds.

Preferably, the top of the cylinder barrel is communicated with a cylinder cover.

Preferably, the oil inlet pipe and the oil outlet pipe are both provided with valves.

Preferably, the side wall of the clamping block close to one end of the spring is symmetrically and fixedly connected with sliding blocks, the groove wall of the clamping groove is provided with sliding grooves corresponding to the two sliding blocks, and the sliding blocks are slidably connected in the corresponding sliding grooves.

Preferably, a plurality of oil through holes are formed in the pipe wall of the piston pipe close to one end of the piston in an annular uniform grade.

Preferably, a piston groove is formed in the annular side wall of the piston, a piston ring is sleeved in the piston groove, and the outer annular wall of the piston ring abuts against the inner cylinder wall of the cylinder barrel.

Compared with the prior art, the utility model provides a hydraulic cylinder possesses following beneficial effect:

1. this hydraulic cylinder, through setting up the screens groove, a spring, screens piece and screens punch combination become a screens mechanism, exert the pressing force to the downthehole screens piece of screens, make screens piece atress compression spring and to the motion in the screens groove, break away from the back in the screens hole completely when the screens piece, can change the position between piston rod and the piston pipe, operate above-mentioned step repeatedly, until during the screens piece blocks into suitable screens hole, fix the position between piston rod and the piston pipe, and then adjust the position of piston in the cylinder, make the stroke of piston can change according to equipment control needs, thereby the suitability of pneumatic cylinder has been improved.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses make the stroke of piston can change according to equipment control needs to the suitability of pneumatic cylinder has been improved.

Drawings

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

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1 cylinder barrel, 2 piston rods, 3 pistons, 4 oil inlet pipes, 5 oil outlet pipes, 6 piston pipes, 7 clamping mechanisms, 71 clamping grooves, 72 springs, 73 clamping blocks, 74 clamping holes, 8 cylinder covers, 9 valves, 10 sliding blocks, 11 sliding grooves, 12 oil through holes, 13 piston grooves and 14 piston rings.

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.

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.

Referring to fig. 1-2, a hydraulic cylinder comprises a cylinder barrel 1, a piston rod 2 installed in the cylinder barrel 1 and a piston 3 located in the cylinder barrel 1, wherein the cylinder wall of the cylinder barrel 1 near two ends is respectively communicated with an oil inlet pipe 4 and an oil outlet pipe 5, the piston 3 is connected to the inner cylinder wall of the cylinder barrel 1 in a sliding manner, one end of the piston 3 near the piston rod 2 is fixedly connected with a piston pipe 6, one end of the piston rod 2 near the piston 3 penetrates through the pipe orifice of the piston pipe 6 and extends into the piston pipe 6, and the piston rod 2 is connected with the piston pipe 6 through a clamping mechanism 7;

the clamping mechanism 7 comprises a clamping groove 71, a spring 72, a clamping block 73 and a plurality of clamping holes 74, the clamping groove 71 is arranged on the rod wall of the piston rod 2 close to one end of the piston 3, one end of the spring 72 is fixedly connected to the bottom of the clamping groove 71, the other end of the spring 72 is connected with one end of the clamping block 73, the plurality of clamping holes 74 are uniformly and equidistantly arranged on the tube wall of the piston tube 6 along the vertical direction, one end of the clamping block 73 far away from the spring 72 penetrates through the notch of the clamping groove 71 and extends into one corresponding clamping hole 74, pressing force is applied to the clamping block 43 in the clamping hole 74, so that the clamping block 73 is stressed to compress the spring 72 and moves towards the clamping groove 71, after the clamping block 73 is completely separated from the clamping hole 74, the position between the piston rod 2 and the piston tube 6 can be changed, the steps are repeatedly operated until the clamping block 73 is clamped in the proper clamping hole 74, the position between the piston rod 2 and the piston pipe 6 is fixed, and then the position of the piston 3 in the cylinder barrel 1 is adjusted, so that the stroke of the piston 3 can be changed according to the control requirement of equipment, and the applicability of the hydraulic cylinder is improved.

The top of the cylinder barrel 1 is communicated with a cylinder cover 8.

The oil inlet pipe 4 and the oil outlet pipe 5 are both provided with valves 9, and the oil inlet pipe 4 and the oil outlet pipe 5 are controlled through the valves 9.

The slide blocks 10 are symmetrically and fixedly connected to the side wall of the clamping block 73 close to one end of the spring 72, the slide grooves 11 are formed in the groove walls of the clamping grooves 71 corresponding to the two slide blocks 10, the slide blocks 10 are slidably connected in the corresponding slide grooves 11, and the clamping block 73 drives the slide blocks 10 to move on the slide grooves 11 when moving, so that the clamping block 73 is prevented from being ejected out of the clamping grooves 71 by the spring 72.

The pipe wall of the piston pipe 6 close to one end of the piston 3 is provided with a plurality of oil through holes 12 in an annular uniform grade, and hydraulic oil is prevented from accumulating in the piston pipe 6.

A piston groove 13 is formed in the annular side wall of the piston 3, a piston ring 14 is sleeved in the piston groove 13, the outer annular wall of the piston ring 14 abuts against the inner cylinder wall of the cylinder barrel 1, and the sealing performance between the piston 3 and the inner cylinder wall of the cylinder barrel 1 is improved.

The utility model discloses in, exert the pressing force to the screens piece 43 of screens downthehole 74 of screens, make screens piece 73 atress compression spring 72 spring and to 71 movements in the screens groove, break away from the back in screens hole 74 completely when screens piece 73, can change the position between piston rod 2 and the piston tube 6, operate above-mentioned step repeatedly, go into suitable screens hole 74 until screens piece 73 card, fix the position between piston rod 2 and the piston tube 6, and then adjust the position of piston 3 in cylinder 1, make the stroke of piston 3 can change according to equipment control needs, thereby the suitability of pneumatic cylinder has been improved.

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 hydraulic oil cylinder comprises a cylinder barrel (1), a piston rod (2) installed in the cylinder barrel (1) and a piston (3) located in the cylinder barrel (1), and is characterized in that the cylinder barrel (1) is close to the cylinder walls at two ends and is respectively communicated with an oil inlet pipe (4) and an oil outlet pipe (5), the piston (3) is connected to the inner cylinder wall of the cylinder barrel (1) in a sliding mode, a piston pipe (6) is fixedly connected to one end, close to the piston rod (2), of the piston (3), one end, close to the piston (3), of the piston rod (2) penetrates through a pipe opening of the piston pipe (6) and extends into the piston pipe (6), and the piston rod (2) is connected with the piston pipe (6) through a clamping mechanism (7);

screens mechanism (7) are including screens groove (71), spring (72), screens piece (73) and a plurality of screens hole (74), set up on piston rod (2) is close to the pole wall of piston (3) one end position in screens groove (71), the tank bottom at screens groove (71) is seted up to the one end fixed connection of spring (72), the other end of spring (72) is connected with the one end of screens piece (73), a plurality of the even equidistance of vertical direction is seted up on the pipe wall of piston pipe (6) in screens hole (74), the notch of screens groove (71) is passed and to extending in a screens hole (74) that wherein corresponds to the one end that springs (72) were kept away from in screens piece (73).

2. A hydraulic cylinder according to claim 1, characterized in that the top of the cylinder tube (1) is connected to a cylinder head (8).

3. A hydraulic cylinder according to claim 1, characterised in that valves (9) are mounted on both the inlet pipe (4) and the outlet pipe (5).

4. The hydraulic oil cylinder as claimed in claim 1, wherein the side wall of the position of the locking block (73) near one end of the spring (72) is symmetrically and fixedly connected with the sliding blocks (10), the groove wall of the locking groove (71) is provided with sliding grooves (11) corresponding to the positions of the two sliding blocks (10), and the sliding blocks (10) are slidably connected in the corresponding sliding grooves (11).

5. The hydraulic oil cylinder as claimed in claim 1, characterized in that the wall of the piston tube (6) near one end of the piston (3) is provided with a plurality of oil through holes (12) in an annular uniform grade.

6. The hydraulic oil cylinder according to claim 1, characterized in that a piston groove (13) is formed in the annular side wall of the piston (3), a piston ring (14) is sleeved in the piston groove (13), and the outer annular wall of the piston ring (14) is abutted to the inner cylinder wall of the cylinder barrel (1).