CN202560249U - Single hydraulic prop - Google Patents
Single hydraulic prop Download PDFInfo
- Publication number
- CN202560249U CN202560249U CN201220150726XU CN201220150726U CN202560249U CN 202560249 U CN202560249 U CN 202560249U CN 201220150726X U CN201220150726X U CN 201220150726XU CN 201220150726 U CN201220150726 U CN 201220150726U CN 202560249 U CN202560249 U CN 202560249U
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- CN
- China
- Prior art keywords
- oil cylinder
- hydraulic prop
- living
- post
- single hydraulic
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- Expired - Fee Related
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Abstract
The utility model discloses a single hydraulic prop and belongs to the field of coal mine supporting products. The single hydraulic prop comprises an oil cylinder provided with a base and a mobile column. The upper end of the oil cylinder is provided with a handle body, and the bottom of the oil cylinder is provided with a ring-shaped plunger. A plunger at the bottom of the mobile column and the lower portion of the mobile column extend into an inner chamber of the oil cylinder. The single hydraulic prop is characterized in that the top of the mobile column (2) is provided with a column head (1) which is provided with a valve hole communicated with the inner chamber of the oil cylinder (7), a three-way valve (18) is arranged inside the valve hole, the top of the mobile column (2) and the top of the base (17) are respectively provided with a spring hook (19) and a spring hook (20), and a back moving spring (8) is connected between the upper spring hook (19) and the lower spring hook (20). The single hydraulic prop is simple to dismantle, and light in weight without influencing supporting strength, reduces labor intensity of coal mine workers at working time, decreases the amount of discharging media to be very little, prevents underground water from being polluted, and is especially suitable for being used in mining areas of low coal seams in coal mines and in the pit, particularly coal seams with heights of less than 1 meter.
Description
Technical field
The 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 hydraulic prop general work stroke is longer, is applicable to the work plane that the coal seam is higher.The 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 the hydraulic prop of shorter work plane.
The utility model solves the technical scheme that its technical problem adopted: this 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.
Adopt the oil cylinder of thicker diameter, improve support force, 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 beneficial effect that the utility model 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, 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.
Cylinder diameter is φ 70-80mm, and the column diameter of living is φ 55mm-φ 60mm.Diameter is bigger, can effectively improve support degree.Simultaneously, conveniently carry and install.
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. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220150726XU CN202560249U (en) | 2012-04-10 | 2012-04-10 | Single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220150726XU CN202560249U (en) | 2012-04-10 | 2012-04-10 | Single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560249U true CN202560249U (en) | 2012-11-28 |
Family
ID=47209913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220150726XU Expired - Fee Related CN202560249U (en) | 2012-04-10 | 2012-04-10 | Single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533476A (en) * | 2014-11-14 | 2015-04-22 | 淮北安来机电装备有限公司 | Non-joint single hydraulic prop for blasting mining |
-
2012
- 2012-04-10 CN CN201220150726XU patent/CN202560249U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533476A (en) * | 2014-11-14 | 2015-04-22 | 淮北安来机电装备有限公司 | Non-joint single hydraulic prop for blasting mining |
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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 |