CN2825950Y - Single hydraulic support with liquid level control function for mining - Google Patents
Single hydraulic support with liquid level control function for mining Download PDFInfo
- Publication number
- CN2825950Y CN2825950Y CN 200520074280 CN200520074280U CN2825950Y CN 2825950 Y CN2825950 Y CN 2825950Y CN 200520074280 CN200520074280 CN 200520074280 CN 200520074280 U CN200520074280 U CN 200520074280U CN 2825950 Y CN2825950 Y CN 2825950Y
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- CN
- China
- Prior art keywords
- post
- movable post
- living
- liquid
- spacing
- 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 single hydraulic support with a liquid level control function for mining, which comprises a movable post, a top cover hinged with the upper end of the movable post, a sealing cover unit, an oil cylinder arranged outside the movable post, a three-purpose valve, a handle valve body and a reset spring arranged in the movable post. The upper end of the reset spring is hung on the sealing cover unit, and the lower end is hung on a base. The utility model is characterized in that an original limiting boss at the lower part of the movable post is uniformly provided with a plurality of limiting holes used for discharging liquid along the post body in one circle. The liquid discharging amount per unit time of the limiting holes is equal to or greater than the liquid charging amount per unit time pf the support. When the movable post is lifted to the limited height, the liquid flows out from the limiting hole of the movable post. Thus, the movable post is stopped form lifting. The utility model has the advantages of simple structure and reliable limiting action.
Description
Technical field
The utility model relates to a kind of hydraulic prop, particularly a kind of spacing colliery hydraulic Support with Suspending Hollow Plug of liquid limit method that adopts.
Background technology
The hydraulic prop that is used for the coal mine lower supporting rod in use, in order to prevent that the post of living was risen the maximum height that requires, in design, adopted mechanical stop limiter, limiting stand or spacing steel wire are in the middle of actual use, when the pressure of feed flow is big, spacing inefficacy often takes place, the post of will living rose stopping means and made post alive and pillar overall separation, or the post of living is stuck on limiting stand, and the post of living can not rise and can not descend.What influence was produced normally carries out.
Summary of the invention
The purpose of this utility model provides the spacing mine individual hydraulic prop of a kind of liquid, spacing to change liquid into spacing with the spacing boss by machinery of the cylinder of living, when fluid pressure is big spacing inefficacy taking place to overcome existing limiting stand or spacing steel wire, causes post alive and pillar overall separation or the stuck technical problem that can't work at the limiting stand upper supporting column of post of living.
The utility model is realized with following technical scheme: the spacing mine individual hydraulic prop of a kind of liquid, it comprises post alive, be connected hinged top lid, the seal cover assembly of post alive upper end, there is oil cylinder in the post outside of living, it also comprises in triple-use valve, the handgrip valve body cylinder alive is equipped with back-moving spring, the back-moving spring upper end is articulated on the seal cover assembly, the lower end is articulated on the base, it is characterized in that one week of cylinder evenly being provided with some spacing holes that are used for drainage at the former positive stop lug boss place, bottom of the post of living along living.
Its operating principle is: after the cylinder of living rose to spacing height, liquid was confessed working solution with pumping plant and is leaked to the outside along the post surface of living from several spacing holes of the post of living, played position-limiting action.After stopping feed flow, the spacing hole on the cylinder of living sinks post alive by the tension force and the weight of self of spring, and spacing hole is withdrawn into again in the oil cylinder, can carry out normal descending operation again.Its advantage is: this programme is simple in structure, and is spacing reliable, the post that can not occur living beat fly or the post of living to go out limiting stand stuck in in-oil cylinder phenomenon.
Description of drawings
Be described in further detail the utility model below in conjunction with drawings and Examples.
Fig. 1 is the utility model structural representation;
Fig. 2 is the post A-A sectional drawing of living.
Among the figure: 1, hinged top lid, 2, the handgrip valve body, 3, triple-use valve, 4, the post of living, 5, spacing hole, 6, oil cylinder, 7, the seal cover assembly, 8, back-moving spring, 9, base.
The specific embodiment
As shown in Figure 1, the spacing mine individual hydraulic prop of liquid comprises post 4 alive, the top of going up of the post 4 of living is connected with hinged top lid 1, when contracting when the next, bottom contact base 9, in the post 4 alive back-moving spring 8 is housed, the upper end of back-moving spring 8 hangs on the post alive, and the lower end hangs on the base 9; Outside the post 4 alive is oil cylinder 6, and handgrip valve body 2 and triple-use valve 3 also are housed on the column.Being provided with 4 through holes symmetrically and evenly on the sixth place perisporium of the bottom length overall of the post 4 of living is spacing hole (5).It also is original positive stop lug boss position herein.
During setting prop the fluid injection gun in the pipe-line system is inserted the oiling valve body of triple-use valve (3), the operation fluid injection gun, the pumping plant highly pressurised liquid enters pillar through the one way valve that fluid injection gun backs down in the triple-use valve, forces post 4 alive to raise; After the post 4 of living was elevated to spacing height, spacing hole 5 exposed outside the oil cylinder 6, and the working solution that liquid is supplied with pumping plant from four spacing holes of the post 4 of living is leaked to the outside along the post surface of living, and the post of living then tops out, thereby plays position-limiting action.After stopping feed flow, the spacing hole on the post 4 of living sinks post 4 alive by the tension force and the weight of self of back-moving spring 8, and spacing hole 5 is withdrawn into again in the oil cylinder 6, can carry out normal descending operation again.
Claims (2)
1, the spacing mine individual hydraulic prop of a kind of liquid, it comprises post alive (4), be connected hinged top lid (1), the seal cover assembly (7) of post alive (1) upper end, there is oil cylinder (6) in the post outside of living, it also comprises in triple-use valve (3), handgrip valve body (2) cylinder alive is equipped with back-moving spring (8), the back-moving spring upper end is articulated on the seal cover assembly (7), the lower end is articulated on the base (9), it is characterized in that evenly being provided with some spacing holes (5) that are used for drainage at the former positive stop lug boss place, bottom of the post (1) of living in one week of cylinder along living.
2, the spacing mine individual hydraulic prop of a kind of liquid according to claim 1 is characterized in that on the cylinder circumference of living 4 spacing holes (5) being set symmetrically and evenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074280 CN2825950Y (en) | 2005-08-03 | 2005-08-03 | Single hydraulic support with liquid level control function for mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074280 CN2825950Y (en) | 2005-08-03 | 2005-08-03 | Single hydraulic support with liquid level control function for mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2825950Y true CN2825950Y (en) | 2006-10-11 |
Family
ID=37066135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520074280 Expired - Fee Related CN2825950Y (en) | 2005-08-03 | 2005-08-03 | Single hydraulic support with liquid level control function for mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2825950Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660422B (en) * | 2009-09-17 | 2012-01-11 | 杨绍柏 | Single hydraulic prop |
-
2005
- 2005-08-03 CN CN 200520074280 patent/CN2825950Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660422B (en) * | 2009-09-17 | 2012-01-11 | 杨绍柏 | Single hydraulic prop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |