CN201496076U - Floated type single hydraulic prop stay - Google Patents
Floated type single hydraulic prop stay Download PDFInfo
- Publication number
- CN201496076U CN201496076U CN2009202265270U CN200920226527U CN201496076U CN 201496076 U CN201496076 U CN 201496076U CN 2009202265270 U CN2009202265270 U CN 2009202265270U CN 200920226527 U CN200920226527 U CN 200920226527U CN 201496076 U CN201496076 U CN 201496076U
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- China
- Prior art keywords
- plunger tube
- top cover
- liquid
- hydraulic prop
- liquid bath
- 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 coal mine pit prop device, in particular to a floated type single hydraulic prop stay, mainly comprising a top cover (1), a handle body (4), a three-way valve (3), an oil cylinder (5), a return spring (6), a movable column casing (7), a pedestal body (8), and the like. A liquid injection valve hole (21) is arranged on the top cover (1); the three-way valve (3) is arranged in the liquid injection valve hole (21); a liquid through tank (22) is also arranged on the top cover (1); the liquid through tank (22) is an annular tank arranged at the outer side of the movable column casing (7) in an annular mode; the liquid injection valve hole (21) is communicated with the liquid through tank (22) through a liquid through tank hole (23); the liquid through tank (22) is communicated with the inner part of the movable column casing (7) through a liquid through hole arranged at the upper part of the movable column casing (7); a plugging cover (2) in a sealing connection mode is arranged at the inner part of the upper end of the movable column casing (7); and the upper part of the plugging cover (2) is in parallel with the upper part of the movable column casing (7). The floated type single hydraulic prop stay has the advantages of simple and convenient operation, complete exhaust, stable and reliable pressure of the prop stay, good antiseptic property, long service life, low maintenance costs, and the like.
Description
Technical field
The utility model is a kind of support apparatus in coal mine, specifically a kind ofly is applicable to colliery high-grade conventional mining and blast mining face roof timbering and combines and adopt upper and lower gallery advance support, the floated hydraulic prop that uses applicable to the gentle dip work plane.
Background technology
Hydraulic prop is one of corollary equipment important in the fully-mechanized mining working, and hydraulic prop divides two types of internal-injection type and external poureds.Because of outside injection type hydraulic pillar is easy and simple to handle, quick, setting load stable, use more universal.At present, domestic outside injection type hydraulic pillar has two kinds of the floated hydraulic props of piston hydraulic single prop and plunger type or piston type from form of structure, its specification is DWO6-45, generally be made up of parts such as oil cylinder, plunger tube, base body, top cover, handgrip body, back-moving spring, triple-use valve, piston or back-up ring, blanking cover, seals, working media is emulsion or neutral water; Its fluid injection position and mode are: piston hydraulic single prop is installed triple-use valve by the column cap valve opening on the cylinder of living and is realized fluid injection, and floated hydraulic prop is generally installed triple-use valve by the valve opening on the handgrip body and realized fluid injection; Its valve opening surface all electroplated zinc nickel alloy layer is realized anticorrosion.In actual application, for realizing and keep stable, the reliability of pillar service behaviour, pillar needs first lifting column one to twice in use, to get rid of air in the most cavity, avoids causing the compressibility of working media.Floated hydraulic prop need could drain air in its cavity with the pillar accumbency so that it is in level.But because of limit by supporting operating environment and space, this is horizontal pillar to drain the operation of air in its cavity to be difficult for better realizing, and operation easier is big, and will further influence stable, the reliability of its next step support work.In addition, its valve opening electroplating of Zn-Ni alloy onto surface layer is anticorrosion, anticorrosion longest-lived less than 1 year, and electroplating process pollutes environment.Therefore, the present hydraulic prop fluid injection mode of using, the fluid injection mode of floated hydraulic prop particularly, can not resolve the problem that drains air in its cavity before pillar uses easy, efficiently, reliably, and there is a following shortcoming: air in (1) liquid injection port and the cavity, exist gas to seal " dead band " up for safekeeping, to have a small amount of or the part air can't be discharged cavity and is compressed or compresses and be dissolved in the working media, and will further be subjected to ambient influnence such as temperature and the pillar pressure stability is impacted; (2) operation is not easy, efficient is low.Particularly the fluid injection mode of floated hydraulic prop needs to keep flat pillar under mine and discharges air in its cavity; (3) exhaust is not thorough, unreliable, air in the gas can not be drained; (4) the fluid injection position of floated hydraulic prop generally is positioned at the pillar central region, be subject to the collision and be out of shape, influence service behaviours such as its use; (5) electroplating technology exists environment pollution serious, is unfavorable for operative employee's physical and mental health; And there is hole in coating, and anticorrosion surface at first the erosion point occurs along it, makes matrix pit occur, causes the coating flaking, further accelerates valve opening matrix corrosion degree, influences service behaviours such as product sealing.
Summary of the invention
In order to overcome above-mentioned defective, it is a kind of easy and simple to handle that the utility model provides, and exhaust is thorough, and the pillar pressure stability is reliable, and antiseptic property is good, long service life, and maintenance cost is low, and anticorrosive coat is being made and the free of contamination floated hydraulic prop of use.
The utility model is achieved in that a kind of floated hydraulic prop, comprise top cover, the handgrip body, triple-use valve, oil cylinder, back-moving spring, plunger tube and base body, fixedly connected with plunger tube in the upper end that top cover is arranged on plunger tube, the bottom of plunger tube extend into oil cylinder inside, the handgrip body is arranged on the upper end of oil cylinder and is tightly connected with oil cylinder and plunger tube, back-moving spring is arranged on plunger tube inside, described top cover is provided with the fluid injection valve opening, triple-use valve is installed in this fluid injection valve opening, on top cover, also be provided with logical liquid bath, described logical liquid bath is the cannelure that is provided with along plunger tube wall outside ring-type, the fluid injection valve opening is communicated with logical liquid bath by logical liquid bath mouth, liquid-through hole and the plunger tube internal communication of logical liquid bath by being provided with on plunger tube top; Inside, upper end at plunger tube is provided with the blanking cover that is tightly connected, and blanking cover top is concordant with plunger tube top.
Between top cover and plunger tube, the upper and lower of logical liquid bath is provided with sealing ring.
Be provided with the anticorrosion antiwear layer of nickel phosphorus boron chemical plating on the surface of liquid-filling valve hole surface, top cover bore area, plunger tube sealing pair surface and the blanking cover of top cover.
Described anticorrosion antiwear layer thickness is 0.015 millimeter-0.025 millimeter.
The utility model is arranged on triple-use valve on the top cover, and promptly liquid injection port is positioned at the top of pillar, prevents that little air from can't discharge cavity, forms gas and seals " dead band " up for safekeeping, thereby influence the pillar pressure stability; Liquid injection port is arranged on post top portion, not only exhaust thoroughly, reliable, antiseptic property is good, and is not subject to collision and causes distortion, improves the application life of pillar; The anticorrosion antiwear layer adopts nickel phosphorus boron chemical plating, reduces and pollutes, and is corrosion-resistant, abrasion resistance is strong, improves pillar application life, reduces product and uses maintenance cost.
Description of drawings
Accompanying drawing is a structural representation of the present utility model
The specific embodiment
The technical solution adopted in the utility model is: a kind of floated hydraulic prop, mainly comprise top cover 1, handgrip body 4, triple-use valve 3, oil cylinder 5, back-moving spring 6, plunger tube 7 and base body 8 etc., fixedly connected with plunger tube 7 in the upper end that top cover 1 is arranged on plunger tube 7, plunger tube 7 is connected and fixed by being connected and fixed circle with top cover 1 in the present embodiment, is connected and fixed circle and also claims to connect steel wire.The bottom of plunger tube 7 extend into oil cylinder 5 inside, and the bottom of oil cylinder 5 and plunger tube 7 is provided with the base body 8 that is tightly connected, and base body 8 is fixedlyed connected with oil cylinder 5 by being connected and fixed circle.Handgrip body 4 is arranged on the upper end of oil cylinder 5 and is tightly connected with oil cylinder 5 and plunger tube 7.Back-moving spring 6 is arranged on plunger tube 7 inside.Top cover 1 is provided with fluid injection valve opening 21, and triple-use valve 3 is installed in this fluid injection valve opening 21, also is provided with logical liquid bath 22 on top cover 1, and described logical liquid bath 22 is the cannelure that is provided with along plunger tube 7 walls outside ring-type.Fluid injection valve opening 21 is communicated with logical liquid bath 22 by logical liquid bath mouth 23, liquid-through hole and plunger tube 7 internal communication of logical liquid bath 22 by being provided with on plunger tube 7 tops.Be provided with the blanking cover 2 that is tightly connected in the inside, upper end of plunger tube 7, blanking cover 2 tops are concordant with plunger tube 7 tops.The utility model can also be between top cover 1 and plunger tube 7, the upper and lower of logical liquid bath 22 is provided with sealing ring.The utility model can also be provided with the anticorrosion antiwear layer that adopts nickel phosphorus boron chemical plating on the surface of fluid injection valve opening 21 surfaces, top cover 1 bore area, plunger tube 7 sealing pair surfaces and the blanking cover 2 of top cover 1.Anticorrosion antiwear layer thickness of the present utility model is 0.015 millimeter-0.025 millimeter.
The utility model and fluid injection gun, unloading handgrip are used.When pillar setting prop and support just, at first fluid injection gun is inserted in the liquid injection hole of triple-use valve 3, the fluid injection gun handgrip of holding with a firm grip then, highly pressurised liquid through fluid injection gun with triple-use valve 3 in the ball valve steel ball open, highly pressurised liquid enters the pillar cavity of resorption, forces plunger tube 7 to raise, around here, the operation fluid injection gun, lifting column one to twice drains air in the pillar cavity.After pillar makes metal roof bar be close to face roof, unclamp the fluid injection gun handgrip.At this moment, pillar inner chamber fluid pressure is a pumping plant pressure, and the setting load that pillar gives top board is specified setting load.With the propelling of coal-face and the prolongation of support time, the load that face roof acts on the pillar increases.When roof pressure surpasses the pillar yield load, highly pressurised liquid in the pillar is opened the safety valve in the triple-use valve 3, liquid spill, chamber pressure reduces, contract under the pillar, when the suffered load of pillar was lower than yield load, safety valve cut out, inner chamber liquid stops excessive, and the pillar service load is remained at about yield load.During prop drawing, will unload handgrip and insert in the triple-use valve 3 right valve cylinder unloading holes, rotate the unloading handgrip, and force valve pocket to move axially, thereby open feather valve in the triple-use valve 3.At this moment, the working solution of pillar inner chamber enters the goaf through feather valve, and the post of living bounces back under the effect of deadweight and back-moving spring 6, reaches and falls the post purpose.
Characteristics of the present utility model:
1, adopt the pillar of top cover fluid injection frame mode, it can realize thoroughly, efficiently, easily that the interior air of cavity before pillar uses drains, and realizes and keep stable, the reliability of performances such as a column pressure.
2, it is anticorrosion, anti-wear performance significantly improves, the 2-3 that is about original structure doubly, nonhazardous, pollution-free.
3, easy and simple to handle, maintenance cost is low, and relative price is low, and long service life has the very strong market competitiveness and popularizing application prospect.
The utlity model has easy and simple to handlely in a word, exhaust is thorough, and the pillar pressure stability is reliable, characteristics such as antiseptic property is good, long service life, maintenance cost are low.
In floated hydraulic prop technical field, everyly include the upper end that top cover is arranged on plunger tube and fixedly connected with plunger tube, the bottom of plunger tube extend into oil cylinder inside, the handgrip body is arranged on the upper end of oil cylinder and is tightly connected with oil cylinder and plunger tube, back-moving spring is arranged on plunger tube inside, described top cover is provided with the fluid injection valve opening, triple-use valve is installed in this fluid injection valve opening, on top cover, also be provided with logical liquid bath, described logical liquid bath is the cannelure that is provided with along plunger tube wall outside ring-type, the fluid injection valve opening is communicated with logical liquid bath by logical liquid bath mouth, liquid-through hole and the plunger tube internal communication of logical liquid bath by being provided with on plunger tube top; Inside, upper end at plunger tube is provided with the blanking cover that is tightly connected, and the blanking cover top technical scheme content concordant with plunger tube top is all in the scope of the utility model protection.
Claims (4)
1. floated hydraulic prop, comprise top cover (1), handgrip body (4), triple-use valve (3), oil cylinder (5), back-moving spring (6), plunger tube (7) and base body (8), fixedly connected with plunger tube (7) in the upper end that top cover (1) is arranged on plunger tube (7), the bottom of plunger tube (7) extend into oil cylinder (5) inside, handgrip body (4) is arranged on the upper end of oil cylinder (5) and is tightly connected with oil cylinder (5) and plunger tube (7), back-moving spring (6) is arranged on plunger tube (7) inside, it is characterized in that: described top cover (1) is provided with fluid injection valve opening (21), triple-use valve (3) is installed in this fluid injection valve opening (21), on top cover (1), also be provided with logical liquid bath (22), described logical liquid bath (22) is the cannelure that is provided with along plunger tube (7) wall outside ring-type, fluid injection valve opening (21) is communicated with logical liquid bath (22) by logical liquid bath mouth (23), liquid-through hole and plunger tube (7) internal communication of logical liquid bath (22) by being provided with on plunger tube (7) top; Be provided with the blanking cover (2) that is tightly connected in the inside, upper end of plunger tube (7), blanking cover (2) top is concordant with plunger tube (7) top.
2. floated hydraulic prop according to claim 1 is characterized in that: between top cover (1) and plunger tube (7), the upper and lower of logical liquid bath (22) is provided with sealing ring.
3. floated hydraulic prop according to claim 1 and 2 is characterized in that: the anticorrosion antiwear layer that is provided with nickel phosphorus boron chemical plating on fluid injection valve opening (21) surface, top cover (1) bore area, plunger tube (7) sealing pair of top cover (1) surface surperficial and blanking cover (2).
4. floated hydraulic prop according to claim 3 is characterized in that: described anticorrosion antiwear layer thickness is 0.015 millimeter-0.025 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202265270U CN201496076U (en) | 2009-09-18 | 2009-09-18 | Floated type single hydraulic prop stay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202265270U CN201496076U (en) | 2009-09-18 | 2009-09-18 | Floated type single hydraulic prop stay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496076U true CN201496076U (en) | 2010-06-02 |
Family
ID=42439284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202265270U Expired - Fee Related CN201496076U (en) | 2009-09-18 | 2009-09-18 | Floated type single hydraulic prop stay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877866A (en) * | 2012-10-17 | 2013-01-16 | 赵士民 | Double-injection double-seal pressure-display memory type single hydraulic prop |
-
2009
- 2009-09-18 CN CN2009202265270U patent/CN201496076U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877866A (en) * | 2012-10-17 | 2013-01-16 | 赵士民 | Double-injection double-seal pressure-display memory type single hydraulic prop |
| CN102877866B (en) * | 2012-10-17 | 2015-03-25 | 赵士民 | Double-injection double-seal pressure-display memory type single hydraulic prop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG ENERGY MACHINERY GROUP CO., LTD. Free format text: FORMER NAME: SHANDONG TAISHAN JIANNENG MACHINERY GROUP CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 271222 Shandong Taishan Xintai Jian energy Machinery Group Co., Ltd., Shandong Patentee after: Shandong Energy Machinery Group Co., Ltd. Address before: 271222 Shandong Taishan Xintai Jian energy Machinery Group Co., Ltd., Shandong Patentee before: Shandong Taishan Jianneng Machinery Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20120918 |