CN201391322Y - Safeguard low liquid injection type single hydraulic prop - Google Patents
Safeguard low liquid injection type single hydraulic prop Download PDFInfo
- Publication number
- CN201391322Y CN201391322Y CN200920041098U CN200920041098U CN201391322Y CN 201391322 Y CN201391322 Y CN 201391322Y CN 200920041098 U CN200920041098 U CN 200920041098U CN 200920041098 U CN200920041098 U CN 200920041098U CN 201391322 Y CN201391322 Y CN 201391322Y
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- valve body
- liquid injection
- movable column
- post
- 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 relates to a safeguard low liquid injection type single hydraulic prop which is provided with a base and an oil cylinder arranged on the base; a movable column is arranged in the interior of the oil cylinder, the top part of the movable column is fixedly connected with a top cover, a seal cover is arranged on top of the inner cavity of the movable column, a reset spring is also arranged in the inner cavity of the movable column, a safeguard tube is arranged on the exterior of the oil cylinder, the middle part of the safeguard tube is provided with a handle valve body, the handle valve body is assembled with a three-purpose valve, a liquid injection hole communicated with the inner cavity of the movable column is arranged on the handle valve body. When in use, the three-purpose valve cannot move up and down along with the telescopic operation of the movable column, solves the difficult liquid injection problem of high prop and improves the operational comfort and safety, improves work efficiency, reduces production cost and has wide application.
Description
Technical field
The utility model relates to a kind of mining support apparatus, relates in particular to a kind of safety protection type low level fluid injection type hydraulic prop that is used for colliery common mechanical blast mining face and fully-mechanized mining working faces end head temporary lining.
Background technology
The support apparatus of channel of coal mining working surface comprises multiple structures such as wooden pillar, elemental metals friction prop, hydraulic prop and two flexible suspension pillars, in recent years, along with the continuous developmental research of engineers and technicians, support technology has had significant improvement, and progressively be tending towards perfect, wooden pillar and elemental metals pillar seldom use, hydraulic prop is the new product of development after the elemental metals friction prop, extensive use now, it have in light weight, stroke is big, advantage such as pollution-free.But still have some problems: when the user used high-order hydraulic prop, the position of liquid injection port can be increased along with the increase of height, brings inconvenience to operating personnel, so that influence comfortableness, the safety of operation, and the danger of detonation is arranged.
The utility model content
The technical problems to be solved in the utility model is: for problem such as the comfortableness that overcomes high-order pillar fluid injection difficulty, operation and safety be influenced, the utility model provides a kind of safety protection type low level fluid injection type hydraulic prop, not lifting thereupon of fluid injection position when the post alive of pillar is flexible, not only convenient but also safety like this operates.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of safety protection type low level fluid injection type hydraulic prop, have base and the oil cylinder that is arranged on the base, described oil cylinder inside is provided with post alive, the top of post alive is fixedly connected with top cover, the interior top of chamber of post alive is provided with seal cover, the post inner chamber of living also is provided with back-moving spring, described oil cylinder outer setting has protecting tube, the middle part of protecting tube is provided with the handgrip valve body, described handgrip valve body is fitted with triple-use valve, and the handgrip valve body is provided with the liquid injection hole that is communicated with the post inner chamber of living.
The utility model comprises that further the center of described seal cover is provided with link, and the center of base is provided with corresponding with it link.
The end that the utility model further comprises described back-moving spring is fixed on the link of seal cover center, and the other end is fixed on the link of base center.
The beneficial effect that the utility model obtained is: solved the defective that exists in the background technology, make triple-use valve not stretch and lifting with the post of living, does not increase along with the increase of height the position of liquid injection port, this has just solved the difficult point of high-order pillar fluid injection, the comfortableness and the safety of operation have been increased simultaneously, improved operating efficiency, reduced cost of production, and the generation that protecting tube has effectively been avoided the detonation situation has been set outside oil cylinder.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the utility model preferred embodiment;
Wherein: 1, protecting tube; 2, oil cylinder; 3, the post of living; 4, back-moving spring; 5, top cover; 6, seal cover; 7, triple-use valve; 8, handgrip valve body; 9, base.
The specific embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1, a kind of safety protection type low level fluid injection type hydraulic prop, have base 9 and the oil cylinder 2 that is arranged on the base 9, described oily 2 cylinder interiors are provided with post 3 alive, the top of post 3 alive is fixedly connected with top cover 5, the interior top of chamber of post 2 alive is provided with seal cover 6, the center of described seal cover 6 is provided with link, and the center of base 9 is provided with corresponding with it link, post 3 inner chambers of living also are provided with back-moving spring 4, one end of back-moving spring 4 is fixed on the link of seal cover 6 centers, and the other end is fixed on the link of base 9 centers.Described oil cylinder 2 outer setting have protecting tube 1, the middle part of protecting tube 1 is provided with handgrip valve body 8, described handgrip valve body 8 is fitted with triple-use valve 7, handgrip valve body 8 is provided with the liquid injection hole that is communicated with post 3 inner chambers of living, triple-use valve 7 does not stretch and lifting with the post 3 of living, and does not increase along with the increase of height the position of liquid injection port.
During the utility model work, by the fluid injection in pillar of fluid injection instrument process triple-use valve 7, liquid enters in the cavity of post 3 alive by the liquid injection hole of handgrip valve body 8, injection along with liquid, when reaching certain pressure, the post 3 of living slides in oil cylinder 2 vertically, and seal cover 6 and top cover 5 are along with the post 3 of living rises supporting object when rising to certain altitude; When post fell in pillar, under the effect of back-moving spring 4, the liquid injection hole of liquid by handgrip valve body 8 leads to triple-use valve 7 discharged liquid, the every injection of liquid and discharging once, and pillar just supports and falls post once, and pillar is just finished a working cycles like this.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.
Claims (3)
1, a kind of safety protection type low level fluid injection type hydraulic prop, have base (9) and be arranged on oil cylinder (2) on the base (9), described oil cylinder (2) inside is provided with post alive (3), the top of post alive (3) is fixedly connected with top cover (5), the interior top of chamber of post alive (3) is provided with seal cover (6), post (3) inner chamber of living also is provided with back-moving spring (4), it is characterized in that: described oil cylinder (2) outer setting has protecting tube (1), the middle part of protecting tube (1) is provided with handgrip valve body (8), described handgrip valve body (8) is fitted with triple-use valve (7), and handgrip valve body (8) is provided with the liquid injection hole that is communicated with post (3) inner chamber of living.
2, a kind of safety protection type low level fluid injection type hydraulic prop as claimed in claim 1, it is characterized in that: the center of described seal cover (6) is provided with link, and the center of base (9) is provided with corresponding with it another link.
3, a kind of safety protection type low level fluid injection type hydraulic prop as claimed in claim 1, it is characterized in that: an end of described back-moving spring (4) is fixed on the link of seal cover (6) center, and the other end is fixed on the link of base (9) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041098U CN201391322Y (en) | 2009-04-09 | 2009-04-09 | Safeguard low liquid injection type single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041098U CN201391322Y (en) | 2009-04-09 | 2009-04-09 | Safeguard low liquid injection type single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391322Y true CN201391322Y (en) | 2010-01-27 |
Family
ID=41598148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920041098U Expired - Fee Related CN201391322Y (en) | 2009-04-09 | 2009-04-09 | Safeguard low liquid injection type single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391322Y (en) |
-
2009
- 2009-04-09 CN CN200920041098U patent/CN201391322Y/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: 20100127 Termination date: 20140409 |