CN202521004U - Explosion-proof valve for excavator - Google Patents
Explosion-proof valve for excavator Download PDFInfo
- Publication number
- CN202521004U CN202521004U CN 201220052097 CN201220052097U CN202521004U CN 202521004 U CN202521004 U CN 202521004U CN 201220052097 CN201220052097 CN 201220052097 CN 201220052097 U CN201220052097 U CN 201220052097U CN 202521004 U CN202521004 U CN 202521004U
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- CN
- China
- Prior art keywords
- valve
- excavator
- spool
- piston
- explosion
- 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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- Operation Control Of Excavators (AREA)
Abstract
The utility model discloses an explosion-proof valve for an excavator. The explosion-proof valve comprises a valve body, a valve cavity, a valve core and a plug, wherein the valve core is arranged in the valve cavity; one end of the valve core is pressed against a piston; a piston sleeve is arranged between the piston and the valve core; the piston sleeve is sleeved on the end face of the piston which faces the valve core; the end face of one side of the piston which faces away from the valve core is used for plugging the plug; a valve jacket with a hollow cavity is arranged at one end of the valve cavity; an elastic component is arranged inside the valve jacket; one end of the elastic component is pressed against one end of the valve core; and the other end of the elastic component is fixed at the bottom of the valve jacket. The explosion-proof valve has the advantages: when a movable arm hydraulic pipeline fails or cracks, the descending speed of the load of a movable arm is controlled; the composite action coordination of the excavator is enhanced, and operation comfort is enhanced; and the operation efficiency is increased.
Description
Technical field
The utility model relates to the explosion-proof valve technical field, and especially a kind of excavator is used explosion-proof valve.
Background technique
Hydraulic shovel is a kind of common engineering machinery, has been widely used in every profession and trades such as building, water conservancy.When usage mining machine carrying material, the swing arm hydraulic pipe line breaks down or can the safety that rise the staff under the load be threatened when breaking.On boom cylinder, install explosion-proof valve additional and can reduce this danger, this device can guarantee that when the swing arm hydraulic pipe line broke down or breaks, the rate of descent of swing arm load was controlled.But, installing that the composite move performance of excavator has received influence behind the explosion-proof valve additional, composite move is no longer coordinated, and then has influenced the operating efficiency of machine.In the existing technology scheme, the spool guide cracking pressure of explosion-proof valve is big, and the spool aperture is little, thereby causes excavator swing arm oil cylinder down maneuver slack-off, and complete machine composite move harmony is affected, and then influences the operating efficiency of excavator.
The model utility content
The purpose of the utility model provides a kind of excavator and uses explosion-proof valve, through original explosion-proof valve is carried out architecture advances, improves excavator composite move harmony, improves the operating efficiency of excavator, boosts productivity.
The utility model solves the technological scheme that its technical problem adopted:
A kind of excavator is used explosion-proof valve; Comprise valve body, valve pocket and be arranged on the spool in the said valve pocket, an end of spool props up a piston, wherein; Between said piston and said spool, be provided with a piston sleeve, said piston sleeve be set in said piston on the end face of said spool; Also comprise a screw plug, said plunger backer is carried out shutoff from a side end face of said spool with said screw plug; At said valve pocket one end the valve pocket with hollow cavity is installed, an elastic member is established in said valve pocket inside, and said elastic member one end and said spool one end support mutually, and the other end is fixed on said valve pocket bottom.
Further, said screw plug is a cylindrical body.
Further, said screw plug machines away 1mm towards piston end surface, in order to satisfy the stroke that spool increases.
Further, the thickness of said piston sleeve is 1mm.
Further, the contact position of said valve pocket and said spool is a ledge structure, and said valve pocket is 10mm or 11mm towards the distance of the said ledge structure of end face distance of said spool.
Further, said elastic member is a spring.
Further, the rigidity of said spring is 61.2N/mm.
Compared with prior art, the advantage applies of the utility model exists:
(1) the swing arm hydraulic pipe line breaks down or when breaking, the rate of descent of swing arm load is controlled;
(2) improve excavator composite move harmony, increase operation comfort;
(3) improve operating efficiency.
Description of drawings
Fig. 1 is the structural representation of the utility model excavator with explosion-proof valve.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further, but not as the qualification of the utility model.
The utility model excavator is to have done following improvement on the basis of existing technology with explosion-proof valve: please referring to shown in Figure 1, the utility model explosion-proof valve comprises valve body 1, valve pocket 2 and is arranged on the spool 3 in the valve pocket 2 that an end of spool 3 props up a piston 4.Also comprise a screw plug 5, screw plug 5 is specially a cylindrical body, and piston 4 deviates from a side end face of spool 3 and carries out shutoff with screw plug 5.At valve pocket 2 one ends the valve pocket 6 with hollow cavity is installed, an elastic member 7 is established in valve pocket 6 inside, and elastic member 7 one ends and spool 3 one ends support mutually, and the other end is fixed on valve pocket 6 bottoms, and elastic member 7 is specially a spring.Valve pocket 6 is a ledge structure 61 with the contact position of valve body 1.
The improvement purpose of the utility model is in order to increase the stroke of spool 3; Corrective measure comprises: first; Between piston 4 and spool 3, be provided with a piston sleeve 8, piston sleeve 8 be set in piston 4 on the end face of spool 3, the thickness of the actual piston sleeve of selecting for use 8 is 1mm; The second, machine away valve pocket 6 towards the end of valve body 1 part, the valve pocket 6 after the improvement is 10mm or 11mm towards the distance of the end face distance ledge structure 61 of spool 3; Also machined away screw plug 5 in addition towards piston end face 1mm, in order to satisfy the stroke that spool increases, the thickness of the piston sleeve 5 that is increased is suitable with the total length that machines away; The 3rd, because the spring rate of the spring 4 in the original structure has surpassed endurance limit, the existing spring of selecting for use again reduces spring rate, makes spring rate in the endurance limit scope.Processing valve pocket 6 is selected the little spring of spring rate 4 simultaneously for use, and the rigidity of the actual spring of being selected for use 7 is 61.2N/mm, and then has reduced spool 2 guide's cracking pressures.The result shows that the excavator swing arm rate of descent before has raising, has improved composite move harmony, and then has improved the operating efficiency of excavator, has also increased operator's travelling comfort.
To sum up, the utility model excavator has improved excavator composite move harmony with explosion-proof valve, increases operation comfort, and has improved operating efficiency.
The above is merely the utility model preferred embodiment; Be not thus the restriction the utility model claim; So the equivalent structure that all utilization the utility model specifications and diagramatic content have been done changes, and all is included in the protection domain of the utility model.
Claims (7)
1. an excavator is used explosion-proof valve; Comprise valve body, valve pocket and be arranged on the spool in the said valve pocket, an end of spool props up a piston, it is characterized in that; Between said piston and said spool, be provided with a piston sleeve, said piston sleeve be set in said piston on the end face of said spool; Also comprise a screw plug, said plunger backer is carried out shutoff from a side end face of said spool with said screw plug; At said valve pocket one end the valve pocket with hollow cavity is installed, an elastic member is established in said valve pocket inside, and said elastic member one end and said spool one end support mutually, and the other end is fixed on said valve pocket bottom.
2. excavator as claimed in claim 1 is used explosion-proof valve, it is characterized in that, said screw plug is a cylindrical body.
3. excavator as claimed in claim 1 is used explosion-proof valve, it is characterized in that, said screw plug machines away 1mm towards piston end surface, in order to satisfy the stroke that spool increases.
4. excavator as claimed in claim 1 is used explosion-proof valve, it is characterized in that, the thickness of said piston sleeve is 1mm.
5. excavator as claimed in claim 1 is used explosion-proof valve, it is characterized in that, the contact position of said valve pocket and said spool is a ledge structure, and said valve pocket is 10mm or 11mm towards the distance of the said ledge structure of end face distance of said spool.
6. excavator as claimed in claim 1 is used explosion-proof valve, it is characterized in that, said elastic member is a spring.
7. excavator as claimed in claim 6 is used explosion-proof valve, it is characterized in that, the rigidity of said spring is 61.2N/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220052097 CN202521004U (en) | 2012-02-17 | 2012-02-17 | Explosion-proof valve for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220052097 CN202521004U (en) | 2012-02-17 | 2012-02-17 | Explosion-proof valve for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202521004U true CN202521004U (en) | 2012-11-07 |
Family
ID=47103956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220052097 Expired - Fee Related CN202521004U (en) | 2012-02-17 | 2012-02-17 | Explosion-proof valve for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202521004U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762917A (en) * | 2017-03-10 | 2017-05-31 | 湖南鸿辉科技有限公司 | A kind of big flow explosion-proof valve and method of work |
-
2012
- 2012-02-17 CN CN 201220052097 patent/CN202521004U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762917A (en) * | 2017-03-10 | 2017-05-31 | 湖南鸿辉科技有限公司 | A kind of big flow explosion-proof valve and method of work |
| CN106762917B (en) * | 2017-03-10 | 2018-09-18 | 湖南鸿辉科技有限公司 | A kind of big flow explosion-proof valve and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150217 |
|
| EXPY | Termination of patent right or utility model |