CN204921527U

CN204921527U - Hydraulic cylinder

Info

Publication number: CN204921527U
Application number: CN201520434406.0U
Authority: CN
Inventors: 徐伟
Original assignee: ZHANGJIAGANG JINQIAO LIGHT INDUSTRY MACHINERY Co Ltd
Current assignee: Hebei Zhongmai Electromechanical Equipment Co., Ltd.
Priority date: 2015-06-23
Filing date: 2015-06-23
Publication date: 2015-12-30
Anticipated expiration: 2025-06-23

Abstract

The application discloses hydraulic cylinder, including cylinder, piston rod, piston, cylinder cap and cylinder bottom, the cylinder has communicating cavity along the axial, the piston slide in in the cavity, the one end of piston rod with the piston is fixed, and the other end extends the outside of cavity, the cylinder bottom is sealed to be fixed in the one end of cylinder, the cylinder cap cover is located the outside of piston rod is fixed in the other end of cylinder, the piston bush is located the outside of piston rod, the piston rod with concave the establishing of contact surface of piston is formed with the annular recess of circle, and this recess internal fixation has O shape sealing washer. The utility model discloses set up the sealing washer between piston and piston rod, improved the leakproofness between piston and the piston rod.

Description

Oil hydraulic cylinder

Technical field

The application relates to a kind of oil hydraulic cylinder.

Background technique

Hydraulic energy is changed into mechanical energy, does the hydraulic actuator of straight reciprocating motion (or oscillating motion) by oil hydraulic cylinder.Its structure is simple, reliable operation.When realizing to-and-fro motion with it, can speed reducer be removed from, and there is no drive gap, stable movement, therefore be used widely in the hydraulic system of various machinery.The pressure reduction on oil hydraulic cylinder ouput force and piston effective area and both sides thereof is directly proportional; Oil hydraulic cylinder is made up of cylinder barrel and cylinder cap, piston and piston rod, seal arrangement, damping device and venting gas appliance substantially.

There is the technical problem that assembling is inconvenient, sealing is poor in traditional oil hydraulic cylinder.

Model utility content

The purpose of this utility model is to provide a kind of oil hydraulic cylinder, to overcome deficiency of the prior art.

For achieving the above object, the utility model provides following technological scheme:

The embodiment of the present application discloses a kind of oil hydraulic cylinder, comprise cylinder barrel, piston rod, piston, cylinder cap and cylinder bottom, described cylinder barrel has the cavity communicated vertically, described piston slides in described cavity, one end and the described piston of described piston rod are fixed, the other end extends the outside of described cavity, described cylinder bottom is sealingly fastened in one end of described cylinder barrel, described cylinder cap is sheathed on the outside of described piston rod and is fixed on the other end of described cylinder barrel, described piston sleeve is located at the outside of described piston rod, the recessed groove being formed with ring of the surface of contact of described piston rod and described piston, this groove internal fixtion has O-ring seals.

Preferably, in above-mentioned oil hydraulic cylinder, detachably fixed by bolt between described cylinder cap and described cylinder barrel.

Preferably, in above-mentioned oil hydraulic cylinder, between described cylinder cap and described piston rod, be provided with seal ring and dust ring.

Preferably, in above-mentioned oil hydraulic cylinder, between described cylinder cap and described cylinder barrel, be provided with seal ring.

Preferably, in above-mentioned oil hydraulic cylinder, between the attachment face of described cylinder cap and described cylinder barrel, be provided with gasket seal.

Preferably, in above-mentioned oil hydraulic cylinder, between described piston and described cylinder barrel, be provided with seal ring and guide ring.

Compared with prior art, the utility model has the advantage of: the utility model arranges seal ring between piston and piston rod, improve the sealing between piston and piston rod.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Figure 1 shows that the structural representation of oil hydraulic cylinder in the utility model specific embodiment.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be described in detail the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, belongs to the scope of the utility model protection.

Shown in ginseng Fig. 1, oil hydraulic cylinder comprises cylinder barrel 1, piston rod 2, piston 3, cylinder cap 4 and cylinder bottom 5, cylinder barrel 1 has the cavity communicated vertically, piston 3 slides in cavity, one end and the piston 3 of piston rod 2 are fixed, the other end extends the outside of cavity, cylinder bottom 5 is sealingly fastened in one end of cylinder barrel 1, cylinder cap 4 is sheathed on the outside of piston rod 2 and is fixed on the other end of cylinder barrel 1, piston 3 is sheathed on the outside of piston rod 2, the recessed groove being formed with ring of surface of contact of piston rod 2 and piston, this groove internal fixtion has O-ring seals 6.

Further, detachably fixed by bolt 7 between cylinder cap 4 and cylinder barrel 1.

Further, seal ring 8 and dust ring 9 is provided with between cylinder cap 4 and piston rod 2.

Further, seal ring 10 is provided with between cylinder cap 4 and cylinder barrel 1.

Further, gasket seal 11 is provided with between the attachment face of cylinder cap 4 and cylinder barrel 1.

Further, seal ring 12 and guide ring 13 is provided with between piston and cylinder barrel 1.

It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.

The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.

Claims

1. an oil hydraulic cylinder, it is characterized in that, comprise cylinder barrel, piston rod, piston, cylinder cap and cylinder bottom, described cylinder barrel has the cavity communicated vertically, described piston slides in described cavity, one end and the described piston of described piston rod are fixed, the other end extends the outside of described cavity, described cylinder bottom is sealingly fastened in one end of described cylinder barrel, described cylinder cap is sheathed on the outside of described piston rod and is fixed on the other end of described cylinder barrel, described piston sleeve is located at the outside of described piston rod, the recessed groove being formed with ring of the surface of contact of described piston rod and described piston, this groove internal fixtion has O-ring seals.

2. oil hydraulic cylinder according to claim 1, is characterized in that: detachably fixed by bolt between described cylinder cap and described cylinder barrel.

3. oil hydraulic cylinder according to claim 1, is characterized in that: be provided with seal ring and dust ring between described cylinder cap and described piston rod.

4. oil hydraulic cylinder according to claim 1, is characterized in that: be provided with seal ring between described cylinder cap and described cylinder barrel.

5. oil hydraulic cylinder according to claim 1, is characterized in that: be provided with gasket seal between the attachment face of described cylinder cap and described cylinder barrel.

6. oil hydraulic cylinder according to claim 1, is characterized in that: be provided with seal ring and guide ring between described piston and described cylinder barrel.