CN202560250U - Composite layer single hydraulic prop - Google Patents
Composite layer single hydraulic prop Download PDFInfo
- Publication number
- CN202560250U CN202560250U CN201220150740XU CN201220150740U CN202560250U CN 202560250 U CN202560250 U CN 202560250U CN 201220150740X U CN201220150740X U CN 201220150740XU CN 201220150740 U CN201220150740 U CN 201220150740U CN 202560250 U CN202560250 U CN 202560250U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- living
- post
- plunger
- hydraulic prop
- 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 provides a composite layer single hydraulic prop which belongs to the field of coal mine support products. The prop comprises an oil cylinder with a base arranged at the bottom and a plunger. A handle body is arranged at the upper end of the oil cylinder, an annular piston is installed at the bottom of the oil cylinder, and the piston at the bottom of the plunger and the lower portion of the plunger extend into an inner cavity of the oil cylinder. The composite layer single hydraulic prop is characterized in that a plunger head (1) is arranged at the top of the plunger (2), a valve hole is arranged on the plunger head (1), the valve hole is communicated with the inner cavity of the oil cylinder (7), a three-purpose valve (18) is installed in the valve hole, the upper portion of the plunger (2) and the upper portion of the base (17) are respectively provided with a spring hook (19) and a spring hook (20), and a restoring spring (8) is connected between the two spring hooks (19 and 20). The composite layer single hydraulic prop is simple to disassemble and light in weight without influencing support strength, reduces labor strength when coal mine workers are working, reduces discharged media, and avoids polluting underground water. The composite layer single hydraulic prop is particularly suitable for a mining area of an underground thick coal layer of a coal mine, particularly a coal layer with height below 1 meter.
Description
Technical field
The composite bed hydraulic prop of the utility model belongs to the coal mine support product scope.
Background technology
The stope working surface of coal mines support apparatus is that the mine produces requisite safety means, is used to improve safety, prevents roof fall.Existing composite bed hydraulic prop general work stroke is longer, is applicable to the work plane that the coal seam is higher.The composite bed hydraulic prop of long stroke is because working media is an emulsion, and when coal miner whenever moved a pillar, the liquid that effluxes was more; At work plane as thin as a wafer; The workman is almost in the middle work of creeping, and the liquid measure that effluxes is more, has polluted underground water; The workman works in the environment of mire simultaneously, gives the healthy harm that brought.
The utility model content
According to above deficiency of the prior art, the technical problem that the utility model will solve is: provide a kind of support force big, conveniently moving, be applicable to shorter work plane, the composite bed hydraulic prop that prevents water pollution.
The utility model solves the technical scheme that its technical problem adopted: this composite bed hydraulic prop, comprise that the bottom is equipped with the oil cylinder and the post of living of base, and the oil cylinder upper end is provided with the handgrip body; The bottom is equipped with annular piston, and the piston of the column bottom of living stretches into cylinder cavity with the post bottom of living, and it is characterized in that: the column top of living is provided with column cap; Column cap is provided with valve opening, and triple-use valve is installed in the valve opening UNICOM cylinder cavity, valve opening; Post top alive and base top are provided with spring carrier arm respectively; Connect back-moving spring between two spring carrier arms up and down, oil cylinder length is 175mm-1000mm, and the column length of living is 195mm-1000mm; Cylinder diameter is φ 70-80mm, and the column diameter of living is φ 55mm-φ 60mm; The column cap that triple-use valve is installed that comprehensively reaches of the external surface of the inwall of described oil cylinder, the post of living, piston is provided with multielement alloy deposition layer.
Between handgrip body and the oil cylinder, live between post and the piston, adopt handgrip to connect steel wire, steel wire connection respectively.By those of ordinary skill is grasped.The Sealing Technology that is adopted is grasped by common those skilled in the art.
Use: valve opening is connected triple-use valve, through triple-use valve fluid injection in the post of living.After the post inner chamber of living is full of liquid, because the sealing function between piston and the cylinder wall prevents liquid spill.Continue to increase hydraulic pressure, the pulling force that makes post alive and piston overcome gravity and back-moving spring moves upward, until the needs stroke height.Reach need the working face of coal seam of supporting height after, stop fluid injection, the closed check valve in the triple-use valve.When pillar reclaims, open the feather valve of triple-use valve, internal liquid pressure reduces, the post of the living oil cylinder inside of under the tension of gravity and back-moving spring, withdrawing.
The column cap that triple-use valve is installed that comprehensively reaches of the external surface of the inwall of oil cylinder, the post of living, piston is provided with multielement alloy deposition layer.Its efficiency of preservation, case hardness self-lubricating are far superior to other process of surface treatment, the pillar of adopting new technology, its working media changes aqueous medium by original into emulsification fluid, under coal mine new t shore each outside draining will never polluted underground water.
The beneficial effect that the utility model composite bed hydraulic prop is had is: through being installed in column cap top column cap and top cover and two originally is one; Be welded on the plunger tube with new column cap; Compact conformation, the plunger tube support strength is high, is easier at assembling back-moving spring time ratio; Solved the problem of bad extension back-moving spring, dismounting also becomes simple.In addition, the diameter and the length of preferred oil cylinder, the post of living make it under the situation that does not influence supporting intensity, and weight is lighter, have reduced coal miner labour intensity when work.Because the cylinder post footpath of oil cylinder, the post of living and reducing of length, the liquid measure of the working media that the utility model is required significantly reduces, when coal miner whenever moves a pillar; The medium that effluxes is considerably less, and at work plane as thin as a wafer, the workman is almost in the middle work of creeping; The liquid measure that effluxes is few; Avoided the workman in the environment of mire, to work, given the healthy harm that brings, and prevent polluted underground water.The utility model is particularly useful for girdle exploiting field under coal mine, special at the coal seam height in the coal seam below 1 meter.
Description of drawings
Fig. 1 is the structural representation of the utility model, is the most preferred embodiment of the utility model.
Among Fig. 1: 1, column cap 2, the post 3 of living, guide ring 4, handgrip connect steel wire 5, dust ring 6, handgrip body 7, oil cylinder 8, back-moving spring 9,13, zinc-coated wire 10,15, O-ring seals 11, piston 12, piston guide ring 14, anti-extrusion ring 16, y-type seal ring 17, base 18, triple- use valve 19,20, spring carrier arm.
The specific embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done and to further describe:
As shown in Figure 1, the composite bed hydraulic prop comprises that post alive 2, column cap 1, piston 11, triple-use valve 18, oil cylinder 7, base 17, handgrip body 6 and back-moving spring 8 form.
Post 2 hollows of living form the tubular intracavity structure, and the top is fixedly connected column cap 1, and the top also is fixedly connected with spring carrier arm 19.Column cap 1 is provided with valve opening, and valve opening is together with post 2 inner chambers of living, and valve opening is equipped with triple-use valve 18.Be provided with sealing ring 10 between piston 11 and the post 2 alive.Piston 11 adapts with oil cylinder 7 inwalls, and y-type seal ring 16 and piston guide ring 12 are set between piston 11 and oil cylinder 7 inwalls.
Oil cylinder length is preferably 175mm-1000mm, and the column length of living is preferably 195mm-1000mm, and specification is longer than short stroke, conveniently uses at thin seam working surface below 1 meter.
Oil cylinder preferred oil cylinder diameter is φ 70-80mm.Diameter is bigger, can effectively improve support force.Simultaneously, conveniently carry and install.
At the external surface of the inwall of pillar oil cylinder, the post of living, the column cap that triple-use valve is installed that reaches of piston comprehensively multielement alloy deposition layer is set; Its efficiency of preservation, case hardness self-lubricating; Be far superior to other process of surface treatment; The pillar of adopting new technology, its working media changes aqueous medium by original into emulsification fluid, under coal mine new t shore each outside draining will never polluted underground water.
Use: valve opening is connected triple-use valve 18, through triple-use valve 18 fluid injection in the post 2 of living.After post 2 inner chambers of living are full of liquid, because the sealing function between piston 11 and oil cylinder 7 inwalls prevents liquid spill.Continue to increase hydraulic pressure, make post 2 alive and the pulling force that piston 11 overcomes gravity and back-moving spring 8 move upward, until the needs height.Reach need the working face of coal seam of supporting height after, stop fluid injection, the closed check valve in the triple-use valve 18.When pillar reclaims, open the feather valve of triple-use valve 18, internal liquid pressure reduces, the post 2 of living oil cylinder 7 inside of under the tension of gravity and back-moving spring 18, withdrawing.
The utility model can be handled according to instructions for use, for example wants strict before the part assembling and cleans, and iron pin dirt must not be arranged.Institute useful steel wire coupling part, for example live post and piston fitting face, oil cylinder and seat, it is antirust to be coated with mining antirust screw thread fat.Oral area is obturaged with sealing wax or painter.When back-moving spring is installed pretightning force need be arranged.When initially installing, pillar should note venting.
Claims (1)
1. the composite bed hydraulic prop comprises that the bottom is equipped with the oil cylinder and the post of living of base, and the oil cylinder upper end is provided with the handgrip body; The bottom is equipped with annular piston, and the piston of the column bottom of living stretches into cylinder cavity with the post bottom of living, and it is characterized in that: post (2) top of living is provided with column cap (1); Column cap (1) is provided with valve opening, and triple-use valve (18) is installed in valve opening UNICOM oil cylinder (7) inner chamber, valve opening; Post (2) top alive and base (17) top are provided with spring carrier arm (19), (20) respectively; Connect back-moving spring (8) up and down between two spring carrier arms (19), (20), oil cylinder (10) length is 175mm-1000mm, and post (3) length of living is 195mm-1000mm; Oil cylinder (10) diameter is φ 70-80mm, and the column diameter of living is φ 55mm-φ 60mm; The column cap (1) that triple-use valve (18) is installed that comprehensively reaches of the external surface of the inwall of described oil cylinder (7), the post (2) of living, piston (11) is provided with multielement alloy deposition layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220150740XU CN202560250U (en) | 2012-04-10 | 2012-04-10 | Composite layer single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220150740XU CN202560250U (en) | 2012-04-10 | 2012-04-10 | Composite layer single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560250U true CN202560250U (en) | 2012-11-28 |
Family
ID=47209914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220150740XU Expired - Fee Related CN202560250U (en) | 2012-04-10 | 2012-04-10 | Composite layer single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843351A (en) * | 2018-08-07 | 2018-11-20 | 兖矿东华重工有限公司 | A kind of hydraulic prop |
-
2012
- 2012-04-10 CN CN201220150740XU patent/CN202560250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843351A (en) * | 2018-08-07 | 2018-11-20 | 兖矿东华重工有限公司 | A kind of hydraulic prop |
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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: 20121128 Termination date: 20130410 |