CN201358799Y - Novel individual hydraulic prop - Google Patents
Novel individual hydraulic prop Download PDFInfo
- Publication number
- CN201358799Y CN201358799Y CNU200920079561XU CN200920079561U CN201358799Y CN 201358799 Y CN201358799 Y CN 201358799Y CN U200920079561X U CNU200920079561X U CN U200920079561XU CN 200920079561 U CN200920079561 U CN 200920079561U CN 201358799 Y CN201358799 Y CN 201358799Y
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- CN
- China
- Prior art keywords
- ring
- oil cylinder
- hydraulic prop
- top cover
- cylinder tube
- 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 novel individual hydraulic prop. The individual hydraulic prop comprises a top cover (3), a three-purpose valve (1), a handle (10), a piston rod (18), an oil cylinder barrel (17), a tension spring (16), a base (21), a connecting steel wire (4) of the top cover, a check ring (5) used for a seal ring of the top cover, the seal ring (6) of the top cover, a dustproof ring (7), a sheathing ring (8) of the handle, a seal ring (9) of the handle, a seal check ring (11) of the oil cylinder barrel, a seal ring (12) of the oil cylinder seal ring, a connecting steel wire (13) of the oil cylinder barrel, a seal ring (19) of the base and a connecting steel wire (20) of the base. The individual hydraulic prop is characterized in that a guide sleeve (15) and a bush (14) are fixedly connected with the upper part in the oil cylinder barrel. In the utility model, as the guide sleeve is fixedly connected in the oil cylinder barrel, the up-and-down movement of the piston rod can only cause the relative move and friction with the guide sleeve and the bush, and the piston rod does not touch the inner wall of the oil cylinder barrel, the maintenance is very convenient, thereby achieving the aims of low manufacturing cost and long service life.
Description
Technical field
The utility model relates to a kind of mine pillar, relates in particular to a kind of novel monomeric hydraulic prop.
Background technology
Hydraulic prop is a kind of special tool that is mainly used in ground special engineering supporting and underground mining supporting, especially is mainly used in supporting under the coal mine.Because national policy is forbidden the supporting of colliery use timber, the use amount of hydraulic prop increases year by year, and annual demand in 2006 just surpasses 1,000,000 according to statistics, and simultaneously, the learies of annual pillar is also above 300,000.Find according to investigating, because dust content is higher under the coal mine, because dust enters the cylinder tube of hydraulic prop, the wearing and tearing between aggravation cylinder tube barrel and piston or the mast alive, causing scrapping of hydraulic prop is its one of the main reasons.And still there is not better solution to this problem at present both at home and abroad.
Chinese patent 200620149481.3 discloses a kind of " outside injection type hydraulic pillar ", this hydraulic prop is mainly by top cover, seal cover, post alive, fairlead, oil cylinder, the handgrip valve body, triple-use valve, compositions such as base, its cylinder mouth place, oil cylinder top is provided with a fairlead, dust ring is passed through on the top of fairlead, guide collar, live and seal and relative slip between column sealing circle and the post alive, cylinder seal is passed through in the bottom of fairlead, oil cylinder connects the seal with annular groove of steel wire and oil cylinder and links together, triple-use valve is installed in the handgrip, have the feed liquor through hole that is communicated with oil cylinder and triple-use valve on the handgrip, the bottom of oil cylinder is connected the sealing of steel wire and base by the base sealing ring and links together with base, handgrip is welded on the oil cylinder external cylindrical surface of fairlead below, from the technical scheme of this utility model as can be seen, its goal of the invention mainly is in order to solve the bad phenomenon of leakage that causes of sealing, leakage and processing oil cylinder inner bore key technical problem with high costs that wearing and tearing between unresolved piston or post alive and the oil cylinder bring, its fairlead effect only shows that post alive plays certain stabilization when stretching out.
The utility model content
The purpose of this utility model is to provide in order to overcome the deficiencies in the prior art a kind of low cost of manufacture, the novel monomeric hydraulic prop that service time is long.Its concrete technical scheme is: the novel monomeric hydraulic prop comprises that top cover, triple-use valve, handgrip, the mast of living, cylinder tube, extension spring, base, top cover connect steel wire, the top seal circle connects steel wire, base sealing ring, base connection steel wire with back-up ring, top seal circle, dust ring, grip cover to ring, handgrip sealing ring, cylinder tube Sealing shield ring, cylinder tube sealing ring, cylinder tube, and fairlead and lining are fixed in cylinder tube tube internal upper part.
Described fairlead and lining are fixed in cylinder tube tube internal upper part, are to adopt welding or bonding, and fairlead is connected with cylinder tube with lining close and firm ground.
In order to prevent that better dust from entering in the cylinder tube, be provided with a dirt-proof boot for gentle shape material between top cover and the handgrip body.
When using the utility model hydraulic prop, dirt-proof boot is placed between top cover and the handgrip body, and two ends are fixedly linked with handgrip body or cylinder body and top cover respectively, open triple-use valve, working solution enters cylinder body by the lead channel on fairlead and the lining, the mast of living upwards rises along fairlead, does not hold the spacing shaft shoulder to stop to the mast of living, and finishes whole jacking stroke, during decline, triple-use valve is opened to the pressure release state, and under the effect of the element of pulling back, the mast of living descends.
From the technical solution of the utility model as can be seen, because fairlead is fixed in the cylinder tube, the upper and lower mobile of mast that live only relatively moves and rubs with fairlead and lining, no longer contact with the cylinder tube inwall, avoided the cylinder tube cylinder body is carried out fine finishining, its manufacturing cost greatly descends, and fairlead is selected high-abrasive material, reached the utility model low cost of manufacture fully, the goal of the invention that service time is long.
Description of drawings
Fig. 1 is the structural representation of the utility model unit's hydraulic prop.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Embodiment 1, referring to Fig. 1, the novel monomeric hydraulic prop comprises that top cover 3, triple-use valve 1, handgrip 10, the mast 18 of living, cylinder tube 17, extension spring 16, base 21, top cover connect steel wire 4, the top seal circle connects steel wire 20 with back-up ring 5, top seal circle 6, dust ring 7, grip cover to ring 8, handgrip sealing ring 9, cylinder tube Sealing shield ring 11, cylinder tube sealing ring 12, cylinder tube connection steel wire 13, base sealing ring 19, base, and fairlead 15 and lining 14 are fixed in cylinder tube tube internal upper part by welding.In order to prevent that dust from entering in the cylinder tube, present embodiment is provided with a dirt-proof boot 2 for gentle shape material between top cover and handgrip body.
Claims (3)
1, a kind of novel monomeric hydraulic prop, comprise top cover (3), triple-use valve (1), handgrip (10), mast (18) alive, cylinder tube (17), extension spring (16), base (21), top cover connects steel wire (4), top seal circle back-up ring (5), top seal circle (6), dust ring (7), grip cover is to ring (8), handgrip sealing ring (9), cylinder tube Sealing shield ring (11), cylinder tube sealing ring (12), cylinder tube connects steel wire (13), base sealing ring (19), base connects steel wire (20), and it is characterized in that: fairlead (15) and lining (14) are fixed in cylinder tube tube internal upper part.
2, a kind of novel monomeric hydraulic prop according to claim 1 is characterized in that: fairlead and lining adopt welding or bondingly are connected with cylinder tube.
3, a kind of novel monomeric hydraulic prop according to claim 1 is characterized in that: be provided with a dirt-proof boot (2) for gentle shape material between top cover (3) and handgrip (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920079561XU CN201358799Y (en) | 2009-03-10 | 2009-03-10 | Novel individual hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920079561XU CN201358799Y (en) | 2009-03-10 | 2009-03-10 | Novel individual hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358799Y true CN201358799Y (en) | 2009-12-09 |
Family
ID=41424562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920079561XU Expired - Fee Related CN201358799Y (en) | 2009-03-10 | 2009-03-10 | Novel individual hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358799Y (en) |
-
2009
- 2009-03-10 CN CNU200920079561XU patent/CN201358799Y/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: 20091209 Termination date: 20110310 |