CN206655864U - A kind of oil cylinder piston - Google Patents

Abstract

The utility model discloses a kind of oil cylinder piston, including cylinder bottom, cylinder barrel and cylinder cap, welded with cylinder bottom cylinder barrel one end, the other end is then used with cylinder cap and is threadedly coupled, cylinder bottom inside front ends are provided with piston, sealing in cylinder between two chambers is the O shapes sealing by piston inner hole, and two combination sealings of outer rim placement ensure, in cylinder cap one end, guide sleeve is set, the combination sealing and YX type sealing rings for also preventing fluid from leaking outside, it is threadedly coupled it is characterized in that the piston uses with piston rod, positioning hole is opened on piston rod, pass through simultaneously cap thread hole, bolt is screwed in positioning hole, the piston rod is provided with circlip groove simultaneously, the piston side is fixedly connected with card key by bayonet socket, piston is fixedly connected in the piston rod groove of card key card with piston rod, the card key top is provided with axle flexible steel ring.

Description

A kind of oil cylinder piston

Technical field

Plug cock apparatus field is the utility model is related to, especially a kind of oil cylinder piston.

Background technology

Oil cylinder piston is a kind of power set, and oil cylinder piston is in motion process repeatedly, in fact it could happen that piston loosens, living The problem of plug and piston rod come off so that the sealing of piston reduces, and reduces the service life of sealing ring and oil cylinder.

Utility model content

In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of oil cylinder piston.

Technical scheme is used by the utility model：A kind of oil cylinder piston, including cylinder bottom, cylinder barrel and cylinder cap, cylinder barrel one End is welded with cylinder bottom, and the other end is then with cylinder cap using being threadedly coupled, and to dismount maintenance, both ends are provided with hydraulic fluid port, inner wall of cylinder table Surface roughness requires higher, causes scuffing of cylinder bore accident in order to avoid directly occurring to rub with piston, support ring is cased with piston, it Typically it is made up of high-abrasive materials such as polytetrafluoroethylene (PTFE) or nylon, the sealing in cylinder between two chambers is to lean on the O shapes of piston inner hole close Envelope, and two combination sealings of outer rim placement ensure that piston rod surface equally has higher roughness, in order to ensure piston The movement of bar in order to avoid damaging casing wall and seal, and improves the friction of piston rod and cylinder head bore without departing from center line, and spy is in cylinder cap One end sets guide sleeve, and support ring is cased with guide sleeve endoporus, the combination sealing and YX type sealing rings for also preventing fluid from leaking outside, This two seals can prevent from, because mismachining tolerance causes piston rod permeability phenomenon, dirt being adhered in view of piston rod exposed parts Soil, therefore dust ring is provided with cylinder cap aperture.Oil nozzle is installed on cylinder bottom and piston rod top, is the pin of operating mechanism's connection Axle provides lubricating oil.The piston is used with piston rod and is threadedly coupled, compact-sized to be easy to load and unload, and positioning hole is opened on piston rod, By simultaneously cap thread hole, bolt is screwed in positioning hole, the piston and piston rod for realizing oil cylinder are not fallen off, while the piston Bar is provided with circlip groove, and the piston side is fixedly connected with card key by bayonet socket, and piston is fixedly connected on card key card with piston rod Piston rod groove in, the card key top is provided with axle flexible steel ring.

The beneficial effects of the utility model are：Positioning hole is opened on cylinder piston rod, by simultaneously cap thread hole, bolt Positioning hole is screwed in, the piston and piston rod for realizing oil cylinder are not fallen off, and the card key thickness ratio is small with the nut thickness of diameter, section The space of piston and cylinder bottom is saved, while piston is fixedly connected in the piston rod groove of card key card with piston rod, makes piston It can not move axially and rotate, both reduce the distance of piston and cylinder bottom, also increase the locking reliability of piston, simultaneously The sealing of piston is ensure that, the installation cost is low, is easy to assemble, simple in construction, adds the use longevity of sealing ring and oil cylinder Life.

Brief description of the drawings

Fig. 1 is structure chart of the present utility model.

In figure：1. oil nozzle, 2. cylinder bottoms, 3. card keys, 4. circlips for shaft, 5. support rings, 6. pistons, the sealing of 7.O shapes, 8. Bolt, 9. and cap, 10. piston rods, 11. cylinder barrels, 12. hydraulic fluid ports, 13. support rings, 14. combination sealings, the sealing of 15.YX types, 16. guide sleeve, 17. dust rings, 18. cylinder caps.

Embodiment

It is further to the utility model below in conjunction with the accompanying drawings in order to be more clearly understood that the technical solution of the utility model Explanation.

A kind of oil cylinder piston as shown in Figure 1, including cylinder bottom 2, cylinder barrel 11, cylinder cap 18, guide sleeve 16 and piston 6 and work The grade critical piece of stopper rod 10, the one end of cylinder barrel 11 are welded with cylinder bottom 2, and the other end is then with cylinder cap 18 using being threadedly coupled, to dismount Maintenance, both ends are provided with hydraulic fluid port 12, and the inner wall surface roughness requirements of cylinder barrel 11 are higher, in order to avoid directly occurring to rub with piston Scuffing of cylinder bore accident is caused, support ring 5 is cased with piston, it is typically to be made up of high-abrasive materials such as polytetrafluoroethylene (PTFE) or nylon, in cylinder Sealing between two chambers is to lean on the O shapes sealing 7 of the endoporus of piston 6, and two combination sealings 14 of outer rim placement to ensure, piston The surface of bar 10 equally has higher roughness, in order to ensure piston rod 10 movement without departing from center line, so as not to damage casing wall and Seal, and improve the friction of piston rod 10 and the hole of cylinder cap 18, it is special that in the one end of cylinder cap 18, guide sleeve 16, the endoporus of guide sleeve 16 are set On be cased with support ring 13, also prevent fluid leak outside combination sealing 14 and YX types sealing ring 15, this two seals can prevent Because mismachining tolerance causes piston rod permeability phenomenon, it is contemplated that the exposed parts of piston rod 10 can adhere to dust, therefore at cylinder cap aperture Provided with dust ring 17.Oil nozzle 1 is installed on cylinder bottom 2 and the top of piston rod 10, the bearing pin for operating mechanism's connection provides profit Lubricating oil.The piston 6 is used with piston rod 10 and is threadedly coupled, compact-sized to be easy to load and unload, and is opened positioning hole on piston rod 10, is passed through And the screwed hole of cap 9, bolt 8 is screwed in positioning hole, the piston 6 and piston rod 10 for realizing oil cylinder are not fallen off, while the work Stopper rod 10 is provided with circlip groove, and the side of piston 6 is fixedly connected with card key 3 by bayonet socket, and the thickness ratio of card key 3 is the same as diameter Nut thickness is small, saves the space of piston 6 and cylinder bottom 2, and piston 6 is fixedly connected on the piston rod of the card of card key 3 with piston rod 10 In groove, piston 6 is both reduced the distance of piston 6 and cylinder bottom 2 from moving axially and rotating, it is locking to also increase piston 6 Reliability, while the sealing of piston 6 is ensure that, the top of card key 3 is provided with axle flexible steel ring 4.The installation cost is low, just It is simple in construction in assembling, add the service life of sealing ring and oil cylinder.

Described above is only better embodiment of the present utility model, therefore all according to described in the utility model patent application range The equivalent change or modification done of construction, feature and principle, be included in the utility model patent application range.

Claims (1)

1. a kind of oil cylinder piston, including cylinder bottom, cylinder barrel and cylinder cap, cylinder barrel one end is welded with cylinder bottom, and the other end then uses with cylinder cap Threaded connection, both ends are provided with hydraulic fluid port, and cylinder bottom inside front ends are provided with piston, are cased with support ring on piston, close between two chambers in cylinder Envelope is to lean on the O shapes sealing of piston inner hole, and two combination sealings of outer rim placement to ensure, sets and is oriented in cylinder cap one end Cover, support ring is cased with guide sleeve endoporus, the combination sealing and YX type sealing rings, cylinder cap for also preventing fluid leakage are set at aperture There is dust ring, oil nozzle is installed on cylinder bottom and piston rod top, it is characterised in that the piston is connected with piston rod using screw thread Connect, positioning hole is opened on piston rod, by simultaneously cap thread hole, bolt is screwed in positioning hole, while the piston rod is provided with Circlip groove, the piston side are fixedly connected with card key by bayonet socket, and piston is fixedly connected on the piston rod of card key card with piston rod In groove, the card key top is provided with axle flexible steel ring.