CN215634100U

CN215634100U - Piston assembly

Info

Publication number: CN215634100U
Application number: CN202121890004.3U
Authority: CN
Inventors: 罗诚渝; 刘方君; 刘晓梅
Original assignee: Chongqing Qilong Machinery Manufacturing Co ltd
Current assignee: Chongqing Qilong Machinery Manufacturing Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-01-25
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses a piston assembly, and relates to the technical field of hydraulic pressure. This piston assembly, including piston body and the piston rod of fixed connection at this end of body of piston, the lateral wall of piston body is provided with the first ring channel that two symmetries set up, and first ring channel endotheca is equipped with the oil blanket, the installation cavity that the annular set up is seted up to the lateral wall of piston body, the lateral wall cover of piston body is equipped with the mounting bracket that the annular set up, and fixedly connected with backup pad between mounting bracket and the installation cavity. Can flatten the lip limit of oil blanket when the piston body is installed to the cylinder in, make the piston body more convenient to the installation in the cylinder, simultaneously, avoid causing the damage to the oil blanket, accomplish the back in the installation, make the lip limit of oil blanket recover, guarantee its sealed effect, and, when the phenomenon of crawling takes place for this internal cylinder internal motion of piston, through sending the sound of striking, remind the user in time to shut down and overhaul, guarantee its result of use and life-span.

Description

Piston assembly

Technical Field

The utility model relates to the technical field of hydraulic pressure, in particular to a piston assembly.

Background

The hydraulic oil cylinder is a component which is commonly used in industrial extension, can convert hydraulic energy into mechanical energy, and has a simple structure compared with other mechanical devices. And the speed can be regulated in real time, and the motion process is relatively stable, so that the speed-regulating mechanism is widely applied to hydraulic systems of various machines.

The traditional hydraulic cylinder basically comprises a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffer device and an exhaust device, and the traditional hydraulic cylinder realizes linear motion by utilizing the pressure difference between two sides of the piston. A sealing piston is necessary in the middle. The two sides of the piston are both provided with oil supply systems, oil is fed into one side of the piston, and oil is discharged from the other side of the piston, so that the reciprocating motion is realized through repeated circulation.

However, current piston assembly is when installing, because the oil blanket lip on the piston is the perk state for there is inconvenience when the piston assembles to the cylinder, simultaneously, also easily causes the damage at oil blanket lip, influences the sealed effect when it uses, and, when the piston in the cylinder takes place to crawl the phenomenon in the work, is not convenient for discover, thereby influences its result of use and life-span.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a piston assembly that solves the problems set forth above in the background.

In order to achieve the purpose, the utility model provides the following technical scheme: a piston assembly comprises a piston body and a piston rod fixedly connected to the end part of the piston body, wherein two first annular grooves which are symmetrically arranged are formed in the side wall of the piston body, an oil seal is sleeved in each first annular groove, and an annular installation cavity is formed in the side wall of the piston body;

the lateral wall cover of piston body is equipped with the mounting bracket that the annular set up, and fixedly connected with backup pad between mounting bracket and the installation cavity, the second annular groove has been seted up to the lateral wall of mounting bracket, and the second annular groove endotheca is equipped with the guidance tape, be provided with in the installation cavity and be used for carrying out the protection mechanism that protects the oil blanket when the piston body is installed, and be provided with in the installation cavity and be used for the alarm mechanism who reports to the police when taking place to creep the phenomenon to the piston body.

Preferably, the protection mechanism comprises two symmetrically-arranged moving rings sleeved on the side wall of the piston body, the moving rings are in contact with the side walls of the piston body and the mounting frame, a moving mechanism is arranged in the mounting cavity, and the moving rings are arranged on the moving mechanism.

Preferably, moving mechanism is including rotating the threaded rod of connection on two relative lateral walls of installation cavity, the threaded rod includes first external screw thread and second external screw thread, and the second external screw thread is opposite with the screw thread of first external screw thread soon, the lateral wall threaded connection of threaded rod has the movable plate that two symmetries set up, and the movable plate is fixed with the lateral wall of shift ring, the one end fixedly connected with hexagon socket head cap screw of threaded rod, and the tip setting of piston body is run through to hexagon socket head cap screw's one end.

Preferably, the alarm mechanism includes that the cover establishes the removal cover on the threaded rod lateral wall, the striking board that two symmetries of the lateral wall fixedly connected with of threaded rod set up, and remove the cover and be located between two striking boards, be provided with canceling release mechanical system in the installation cavity, and remove the cover and set up on canceling release mechanical system.

Preferably, canceling release mechanical system includes the dead lever of fixed connection on two relative lateral walls of installation cavity, the lateral wall cover of dead lever is equipped with the sliding block, and the sliding block is fixed with the lateral wall that removes the cover, the lateral wall cover of dead lever is equipped with the spring that two symmetries set up, and the sliding block is located between two springs.

Preferably, both ends of the piston body are provided with round corners.

Preferably, the piston body and the side wall of the mounting frame matched with the moving ring are provided with sealing rings.

Compared with the prior art, the utility model has the beneficial effects that:

(1) this piston assembly, through setting up protection machanism etc, when the piston body is installed to the cylinder in, rotate hexagon socket head cap screw through hexagon socket head cap spanner, hexagon socket head cap screw's rotation drives the rotation of threaded rod, the rotation of threaded rod drives the movable plate and the removal ring is kept away from the motion each other, make the removal ring slide along the lateral wall of piston body and offset with the lip limit of oil blanket, make the lip limit flatten to first ring channel in, thereby it is more convenient to make the piston body to install in the cylinder, and simultaneously, avoid causing the damage to the oil blanket, after the installation, hexagon socket head cap screw in the reverse rotation, make the lip limit of removal ring and oil blanket no longer offset, thereby make the lip limit of oil blanket recover, guarantee its sealed effect.

(2) This piston assembly through setting up alarm mechanism, when the phenomenon of crawling takes place for the internal motion of piston cylinder, under the inertial action, removes the cover and slides to one side along the lateral wall of threaded rod to the striking is on knocking the board, thereby sends the sound of striking, and, can reset under the effect of spring, reminds the user in time to shut down and overhaul, guarantees its result of use and life-span.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the piston body according to the present invention;

FIG. 3 is a schematic view of the internal structure of the piston body from another perspective in accordance with the present invention;

fig. 4 is a schematic sectional view of the piston body according to the present invention.

In the figure: the piston comprises a piston body 1, a first annular groove 101, an oil seal 102, a guide belt 103, a mounting cavity 2, a support plate 3, a mounting frame 4, a threaded rod 501, a first external thread 502, a second external thread 503, a hexagon socket screw 504, a moving plate 505, a moving sleeve 601, a knocking plate 602, a fixing rod 701, a sliding block 702, a spring 703, a moving ring 8, a second annular groove 9, a fillet 10 and a piston rod 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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.

Referring to fig. 1-4, the present invention provides a technical solution: a piston assembly comprises a piston body 1 and a piston rod 11 fixedly connected to the end of the piston body 1, wherein two first annular grooves 101 are symmetrically arranged on the side wall of the piston body 1, an oil seal 102 is sleeved in each first annular groove 101, an annular installation cavity 2 is arranged on the side wall of the piston body 1, an annular installation frame 4 is sleeved on the side wall of the piston body 1, a supporting plate 3 is fixedly connected between the installation frame 4 and the installation cavity 2, a second annular groove 9 is arranged on the side wall of the installation frame 4, a guide belt 103 is sleeved in each second annular groove 9, a protection mechanism for protecting the oil seal 102 when the piston body 1 is installed is arranged in the installation cavity 2, an alarm mechanism for alarming when the piston body 1 creeps is arranged in the installation cavity 2, and the lip edges of the oil seal 102 can be flattened when the piston body 1 is installed in a cylinder, make piston body 1 more convenient to the installation in the cylinder, simultaneously, avoid causing the damage to oil blanket 102, after the installation is accomplished for the lip limit of oil blanket 102 recovers, guarantees its sealed effect, and, when the phenomenon of crawling takes place for the internal motion of cylinder in piston body 1, through sending the sound of striking, remind the user in time to shut down and overhaul, guarantee its result of use and life-span.

Further, the moving ring 8 that the protection machanism set up two symmetries on the piston body 1 lateral wall including the cover, and the lateral wall contact of moving ring 8 and piston body 1 and mounting bracket 4, be provided with moving mechanism in the installation cavity 2, and moving ring 8 sets up on moving mechanism, moving ring 8 keeps away from the motion each other, make moving ring 8 slide and offset with the lip limit of oil blanket 102 along the lateral wall of piston body 1, make the lip limit flatten to first ring channel 101 in, thereby it is more convenient to make piston body 1 to the installation in the cylinder, and simultaneously, avoid causing the damage to oil blanket 102, after the installation is accomplished, make the lip limit of oil blanket 102 recover, guarantee its sealed effect.

Still further, moving mechanism is including rotating threaded rod 501 of connection on two relative lateral walls of installation cavity 2, threaded rod 501 includes first external screw thread 502 and second external screw thread 503, and second external screw thread 503 revolves to opposite with the screw of first external screw thread 502, threaded rod 501's lateral wall threaded connection has two symmetrical movable plates 505 that set up, and movable plate 505 is fixed with shift ring 8's lateral wall, threaded rod 501's one end fixedly connected with hexagon socket head cap screw 504, and the tip setting that the end of hexagon socket head cap screw 504 runs through piston body 1, rotate hexagon socket head cap screw 504 through hexagon socket head cap wrench, hexagon socket head cap screw 504's rotation drives threaded rod 501's rotation, threaded rod 501's rotation drives movable plate 505 and shift ring 8 and keeps away from the motion each other or the motion of being close to each other.

Then, alarm mechanism establishes the removal cover 601 on the threaded rod 501 lateral wall including the cover, the lateral wall fixedly connected with of threaded rod 501 strikes board 602 that two symmetries set up, and remove cover 601 and be located between two strike boards 602, be provided with canceling release mechanical system in the installation cavity 2, and remove cover 601 and set up on canceling release mechanical system, when the phenomenon of crawling takes place for the motion in the cylinder barrel in piston body 1, under the inertial action, remove cover 601 and slide to one side along the lateral wall of threaded rod 501, and the striking is on striking board 602, thereby send and strike the sound, and, can reset under the effect of spring 703, remind the user in time to shut down and overhaul, guarantee its result of use and life-span.

Secondly, the reset mechanism includes fixed rod 701 fixedly connected on two opposite side walls of installation cavity 2, the lateral wall cover of fixed rod 701 is equipped with sliding block 702, and sliding block 702 is fixed with the lateral wall of moving sleeve 601, the lateral wall cover of fixed rod 701 is equipped with two symmetrically arranged springs 703, and sliding block 702 is located between two springs 703, play direction and reset effect to the motion of sliding block 702 and moving sleeve 601, and under normal condition, moving sleeve 601 is in between two rapping plates 602 under the effect of two springs 703.

Both ends of the piston body 1 are provided with round corners 10, so that the piston body 1 is easier to assemble into the cylinder barrel.

Piston body 1 and mounting bracket 4 are provided with the sealing washer with 8 matched with lateral walls of shifting ring, guarantee the leakproofness of its cooperation department, avoid hydraulic oil to get into the inside of installation cavity 2.

The working principle is as follows: when the piston body 1 is required to be installed into the cylinder, the hexagon socket head cap screw 504 is rotated through the hexagon socket head cap wrench, the rotation of the hexagon socket head cap screw 504 drives the threaded rod 501 to rotate, the rotation of the threaded rod 501 drives the moving plate 505 and the moving ring 8 to move away from each other, so that the moving ring 8 slides along the side wall of the piston body 1 and abuts against the lip edge of the oil seal 102, the lip edge is pressed into the first annular groove 101, the piston body 1 is more convenient to install into the cylinder, meanwhile, the oil seal 102 is prevented from being damaged, after the installation is completed, the hexagon socket head cap screw 504 is rotated reversely, the moving ring 8 and the lip edge of the oil seal 102 do not abut against each other any more, the lip edge of the oil seal 102 is restored, and the sealing effect of the oil seal 102 is guaranteed;

and, when the phenomenon of crawling takes place for the internal motion of cylinder in the piston body 1, under the inertia effect, remove cover 601 and slide to one side along the lateral wall of threaded rod 501 to the striking is on beating board 602, thereby sends the sound of beating, and, can reset under the effect of spring 703, reminds the user in time to shut down and overhaul, guarantees its result of use and life-span.

Claims

1. The utility model provides a piston assembly, includes piston body (1) and fixed connection piston rod (11) at piston body (1) tip, its characterized in that: the side wall of the piston body (1) is provided with two first annular grooves (101) which are symmetrically arranged, an oil seal (102) is sleeved in each first annular groove (101), and the side wall of the piston body (1) is provided with an annular mounting cavity (2);

the lateral wall cover of piston body (1) is equipped with mounting bracket (4) that the annular set up, and fixedly connected with backup pad (3) between mounting bracket (4) and installation cavity (2), second ring channel (9) have been seted up to the lateral wall of mounting bracket (4), and second ring channel (9) endotheca is equipped with guidance tape (103), be provided with in installation cavity (2) and be used for carrying out the protection mechanism that protects oil blanket (102) when piston body (1) is installed, and be provided with in installation cavity (2) and be used for reporting to the police when taking place to creep phenomenon to piston body (1).

2. A piston assembly according to claim 1, wherein: the protection mechanism comprises moving rings (8) which are symmetrically arranged on the side wall of the piston body (1) in a sleeved mode, the moving rings (8) are in contact with the side wall of the piston body (1) and the side wall of the mounting frame (4), moving mechanisms are arranged in the mounting cavity (2), and the moving rings (8) are arranged on the moving mechanisms.

3. A piston assembly according to claim 2, wherein: moving mechanism is including rotating threaded rod (501) of connection on two relative lateral walls of installation cavity (2), threaded rod (501) are including first external screw thread (502) and second external screw thread (503), and second external screw thread (503) are opposite with the screw thread of first external screw thread (502) soon, the lateral wall threaded connection of threaded rod (501) has movable plate (505) that two symmetries set up, and movable plate (505) are fixed with the lateral wall of shift ring (8), hexagonal bolt (504) in the one end fixedly connected with of threaded rod (501), and the tip setting that the one end of hexagonal bolt (504) runs through piston body (1).

4. A piston assembly according to claim 1 or 3, wherein: alarm mechanism establishes removal cover (601) on threaded rod (501) lateral wall including the cover, the board (602) of strikeing that two symmetries of lateral wall fixedly connected with of threaded rod (501) set up, and removes cover (601) and be located two and strike between board (602), be provided with canceling release mechanical system in installation cavity (2), and remove cover (601) and set up on canceling release mechanical system.

5. A piston assembly according to claim 4, wherein: the reset mechanism comprises a fixed rod (701) fixedly connected to two opposite side walls of the installation cavity (2), a sliding block (702) is sleeved on the side wall of the fixed rod (701), the sliding block (702) is fixed to the side wall of the movable sleeve (601), two symmetrically arranged springs (703) are sleeved on the side wall of the fixed rod (701), and the sliding block (702) is located between the two springs (703).

6. A piston assembly according to claim 5, wherein: both ends of the piston body (1) are provided with round corners (10).

7. A piston assembly according to claim 6, wherein: and sealing rings are arranged on the side walls of the piston body (1), the mounting frame (4) and the moving ring (8) which are matched with each other.