CN200988483Y - Oil cylinder with support leg - Google Patents
Oil cylinder with support leg Download PDFInfo
- Publication number
- CN200988483Y CN200988483Y CN 200620109622 CN200620109622U CN200988483Y CN 200988483 Y CN200988483 Y CN 200988483Y CN 200620109622 CN200620109622 CN 200620109622 CN 200620109622 U CN200620109622 U CN 200620109622U CN 200988483 Y CN200988483 Y CN 200988483Y
- Authority
- CN
- China
- Prior art keywords
- rod
- piston rod
- oil inlet
- piston
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a supporting leg oil cylinder, belonging to the hydraulic device, which aims at providing a supporting leg oil cylinder for the crane with self locking and the oil inlet pipe not moving followed by the cylinder. The utility model adopts the technical proposal in comprising a cylinder tube, a piston positioned inside the cylinder tube and a piston rod fixedly connected with the piston; the piston rod (5) is a closed empty chamber structure; a rod-free chamber oil inlet (1) and a rod chamber oil inlet (11) are arranged on the cylinder tube (4) extended from the piston rod (5); the rod-free chamber oil inlet (1) is communicated with a rod-free chamber (8) by a pipe (6) fixed in the piston rod (6), and the rod chamber oil supply port (11) is communicated with the rod-free chamber (10) via the empty chamber on the piston rod and an oil hole (9) arranged on the piston rod (5). The utility model has the advantages of having simple and compact structure, easy installation and long service life, and being widely applicable to the variable cranes.
Description
Technical field: the utility model relates to a kind of rubber-tyred chassis engineering truck hydraulic ram, relates in particular to a kind of hydraulic ram that is used to support, stablize rubber-tyred chassis engineering vehicle's supporting legs.
Background technology: at present, be used to support, stablize the support oil cylinder of rubber-tyred chassis engineering truck, major part is that the oil inlet with rod chamber and rodless cavity is arranged on the cylinder barrel, oil inlet also moves up and down with cylinder barrel in the course of the work, so the very easily former thereby damage because of folding, distortion, extruding, friction etc. of oil pipe; In addition, the catch gear of existing rubber-tyred chassis engineering vehicle's supporting legs oil cylinder generally all adopts hydraulic lock, therefore sinks, can not realize accurate location because of the pressure oil seepage causes cylinder barrel easily.
Summary of the invention: at the above-mentioned defective that exists in the prior art, the utility model aims to provide a kind of oil inlet did not move up and down, has auto-lock function with cylinder barrel support oil cylinder.
To achieve these goals, the utility model by the following technical solutions: it comprises cylinder barrel, is installed in the piston in the cylinder barrel, the piston rod of captiveing joint with piston; Piston rod is the fully enclosed cavity structure, the part of extending cylinder barrel at piston rod is provided with rodless cavity oil inlet and rod chamber oil inlet, the oil pipe that is fixed in the piston rod is communicated with the rodless cavity oil inlet with rodless cavity, the rod chamber oil inlet is communicated with rodless cavity by the cavity of piston rod and the oilhole that is located on the piston rod.
The outside face of cylinder barrel is provided with one section rounding conical surface; The tapering of the described rounding conical surface is 0.8 °～0.8 ° 4 '.
Compared with the prior art, the utility model is owing to adopted hollow piston rod construction, and will be arranged on rod chamber on traditional cylinder barrel originally and the oil inlet of rodless cavity is arranged on the piston rod, overcome thoroughly therefore that oil pipe moves up and down together with cylinder barrel and the defective that causes damage easily; In addition, because cylinder barrel adopted inverted pyramidal structures, so external agency can realize mechanical self-latching when contacting with this circular conical surface, thereby prevents the cylinder barrel sinking effectively, and is more safe and reliable.
Description of drawings:
Accompanying drawing is the structural representation of the utility model embodiment.
Among the figure: rodless cavity oil inlet 1 end cap 2 stopper rings 3 cylinder barrels 4 piston rods 5 oil pipes 6 pistons 7 rodless cavities 8 oilholes 9 rod chambers 10 rod chamber oil inlets 11
The specific embodiment: the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
As shown in the figure, the piston 7 that is fixed on piston rod 5 one ends is installed in the cylinder barrel 4, and the port of cylinder barrel 4 is by end cap 2 sealing, for the piston rod 5 of closed cavity structure stretches out from end cap 2.The section of stretching out at piston rod 5 is provided with a rodless cavity oil inlet 1 and a rod chamber oil inlet 11, and an end that is fixed on the oil pipe 6 in piston rod 5 cavitys is communicated with rodless cavity oil inlet 1, the other end is communicated with the rodless cavity 8 of cylinder barrel; Rod chamber oil inlet 11 is communicated with the rod chamber 10 of cylinder barrel by the cavity of stopper rod 5, a plurality of oilholes 9 that are located on the stopper rod 5.In order to prevent that cylinder barrel 4 from gliding, also be provided with one section tapering on the excircle of cylinder barrel 4 is 0.8 °～0.8 ° 4 ' the rounding conical surface; Loosening in order to prevent that end cap 2 from producing, between end cap 2 and cylinder barrel 4, stopper ring 3 is installed.
Claims (3)
1. a support oil cylinder comprises cylinder barrel, is installed in the piston in the cylinder barrel, the piston rod of captiveing joint with piston; It is characterized in that: piston rod (5) is the fully enclosed cavity structure, the part of extending cylinder barrel (4) at piston rod (5) is provided with rodless cavity oil inlet (1) and rod chamber oil inlet (11), the oil pipe (6) that is fixed in the piston rod (5) is communicated with rodless cavity oil inlet (1) with rodless cavity (8), rod chamber oil inlet (11) is communicated with rodless cavity (10) by the cavity of piston rod (5) and the oilhole (9) that is located on the piston rod (5).
2. support oil cylinder according to claim 1 is characterized in that: the outside face of cylinder barrel (4) is provided with one section rounding conical surface.
3. support oil cylinder according to claim 2 is characterized in that: the tapering of the described rounding conical surface is 0.8 °～0.8 ° 4 '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109622 CN200988483Y (en) | 2006-09-11 | 2006-09-11 | Oil cylinder with support leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109622 CN200988483Y (en) | 2006-09-11 | 2006-09-11 | Oil cylinder with support leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200988483Y true CN200988483Y (en) | 2007-12-12 |
Family
ID=38939524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620109622 Expired - Fee Related CN200988483Y (en) | 2006-09-11 | 2006-09-11 | Oil cylinder with support leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200988483Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100596323C (en) * | 2008-02-25 | 2010-03-31 | 齐齐哈尔轨道交通装备有限责任公司 | Support cylinder as well as support means and crane having the same |
| CN102817880A (en) * | 2012-09-11 | 2012-12-12 | 韶关市西马克液压缸有限公司 | Support oil cylinder of rail welding machine |
| CN103233938A (en) * | 2013-05-06 | 2013-08-07 | 华菱星马汽车（集团）股份有限公司 | Tilt cylinder and concrete pump truck tilting mechanism |
| CN113048123A (en) * | 2021-03-24 | 2021-06-29 | 北京汽车集团越野车有限公司 | Power cylinder assembly and vehicle |
-
2006
- 2006-09-11 CN CN 200620109622 patent/CN200988483Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100596323C (en) * | 2008-02-25 | 2010-03-31 | 齐齐哈尔轨道交通装备有限责任公司 | Support cylinder as well as support means and crane having the same |
| CN102817880A (en) * | 2012-09-11 | 2012-12-12 | 韶关市西马克液压缸有限公司 | Support oil cylinder of rail welding machine |
| CN103233938A (en) * | 2013-05-06 | 2013-08-07 | 华菱星马汽车（集团）股份有限公司 | Tilt cylinder and concrete pump truck tilting mechanism |
| CN113048123A (en) * | 2021-03-24 | 2021-06-29 | 北京汽车集团越野车有限公司 | Power cylinder assembly and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071212 |