CN202530488U - Hydraulic arm of small excavator - Google Patents
Hydraulic arm of small excavator Download PDFInfo
- Publication number
- CN202530488U CN202530488U CN2012202105771U CN201220210577U CN202530488U CN 202530488 U CN202530488 U CN 202530488U CN 2012202105771 U CN2012202105771 U CN 2012202105771U CN 201220210577 U CN201220210577 U CN 201220210577U CN 202530488 U CN202530488 U CN 202530488U
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- CN
- China
- Prior art keywords
- pipeline
- driving pipeline
- piston
- hydraulic arm
- cylinder body
- 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 hydraulic arm of a small excavator. The hydraulic arm comprises a cylinder and a piston arranged in the cylinder, a first trunnion is arranged at the top of the cylinder, the piston comprises a piston rod, one end of the piston rod is provided with a second trunnion, the other end of the piston rod is provided with a piston sealing portion, a main driving pipeline and an auxiliary driving pipeline are arranged on the cylinder, and the main driving pipeline is communicated with the inside of the auxiliary driving pipeline. As the main driving pipeline and the auxiliary driving pipeline are arranged on the cylinder, a user can still continue operation by the aid of the auxiliary driving pipeline even if the main driving pipeline is damaged. In addition, the auxiliary driving pipeline is shorter than the main driving pipeline, so that the main driving pipeline and the auxiliary driving pipeline cannot interfere with each other.
Description
Technical field
The utility model relates to a kind of hydraulic means, or rather, is a kind of hydraulic arm of mini-excavator.
Background technology
Hydraulic means is a kind of power transmission very widely, because its unique advantage, promptly has model precision, fine control performance and than less cost, in every field, obtains to use more and more widely.The hydraulic arm of existing mini-excavator generally only is provided with one and drives pipeline, in case this unique driving pipeline takes place to stop up or damage, that whole hydraulic arm all can't work on.
Summary of the invention
The utility model mainly is to solve the existing in prior technology technical problem, thereby a kind of hydraulic arm of mini-excavator is provided.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of hydraulic arm of mini-excavator; Comprise a cylinder body and the piston that is arranged in the described cylinder body, described cylinder body top is provided with one first gudgeon, and described piston comprises a piston rod; One end of said piston rod is provided with one second gudgeon; The other end of said piston rod is provided with a piston seal portion, and described cylinder body is provided with a main pipeline and the process auxiliary drive pipeline of driving, and interpenetrates in the described main inside that drives pipeline and process auxiliary drive pipeline.
As the preferred embodiment of the utility model, described cylinder body is provided with a urgent release of pressure hole.
As the preferred embodiment of the utility model, the length of described process auxiliary drive pipeline is less than the described main length that drives pipeline.
The hydraulic arm of the mini-excavator of the utility model is through being arranged on the main two-pass design that drives pipeline and process auxiliary drive pipeline on the cylinder body, even the main pipeline that drives is damaged, the user still can utilize the process auxiliary drive pipeline to continue operation.In addition, because the length of process auxiliary drive pipeline drives pipeline less than main, so between the two can the phase mutual interference.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the perspective view of hydraulic arm of the mini-excavator of the utility model;
Fig. 2 is the stereochemical structure decomposing schematic representation of the hydraulic arm of the mini-excavator among Fig. 1;
Wherein,
1, the hydraulic arm of mini-excavator; 2, cylinder body; 21, first gudgeon; 22, process auxiliary drive pipeline; 23, the main pipeline that drives; 24, urgent release of pressure hole; 3, piston; 30, piston rod; 31, second gudgeon; 32, piston seal portion.
The specific embodiment
Below in conjunction with accompanying drawing the preferred embodiment of the utility model is set forth in detail, thereby the protection domain of the utility model is made more explicit defining so that advantage of the utility model and characteristic can be easier to it will be appreciated by those skilled in the art that.
To shown in Figure 2, a kind of hydraulic arm 1 of mini-excavator comprises a cylinder body 2 and the piston 3 that is arranged in this cylinder body 2 like Fig. 1; These cylinder body 2 tops are provided with one first gudgeon 21; This piston 3 comprises a piston rod 30, and an end of this piston rod 30 is provided with one second gudgeon 31, and the other end of this piston rod 30 is provided with a piston seal portion 32; This cylinder body 2 is provided with a main pipeline 23 and the process auxiliary drive pipeline 22 of driving, and this master drives pipeline 23 and interpenetrates with the inside of process auxiliary drive pipeline 22.
This cylinder body 2 is provided with a urgent release of pressure hole 24.
The length of this process auxiliary drive pipeline 22 is less than this main length that drives pipeline 23.
The above is merely the specific embodiment of the utility model, but the protection domain of the utility model is not limited thereto, and any variation or replacement of expecting without creative work all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. the hydraulic arm of a mini-excavator (1); Comprise a cylinder body (2) and be arranged on the piston (3) in the described cylinder body (2); Described cylinder body (2) top is provided with one first gudgeon (21), and described piston (3) comprises a piston rod (30), and an end of said piston rod (30) is provided with one second gudgeon (31); The other end of said piston rod (30) is provided with a piston seal portion (32); It is characterized in that described cylinder body (2) is provided with a main pipeline (23) and the process auxiliary drive pipeline (22) of driving, the described main pipeline (23) that drives interpenetrates with the inside of process auxiliary drive pipeline (22).
2. the hydraulic arm of mini-excavator according to claim 1 (1) is characterized in that, described cylinder body (2) is provided with a urgent release of pressure hole (24).
3. the hydraulic arm of mini-excavator according to claim 2 (1) is characterized in that, the length of described process auxiliary drive pipeline (22) is less than the described main length that drives pipeline (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202105771U CN202530488U (en) | 2012-05-11 | 2012-05-11 | Hydraulic arm of small excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202105771U CN202530488U (en) | 2012-05-11 | 2012-05-11 | Hydraulic arm of small excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202530488U true CN202530488U (en) | 2012-11-14 |
Family
ID=47131683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202105771U Expired - Fee Related CN202530488U (en) | 2012-05-11 | 2012-05-11 | Hydraulic arm of small excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202530488U (en) |
-
2012
- 2012-05-11 CN CN2012202105771U patent/CN202530488U/en not_active Expired - Fee Related
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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: 20121114 Termination date: 20130511 |