CN2246711Y - Step-by-step hydraulic prop drawer - Google Patents
Step-by-step hydraulic prop drawer Download PDFInfo
- Publication number
- CN2246711Y CN2246711Y CN 95240857 CN95240857U CN2246711Y CN 2246711 Y CN2246711 Y CN 2246711Y CN 95240857 CN95240857 CN 95240857 CN 95240857 U CN95240857 U CN 95240857U CN 2246711 Y CN2246711 Y CN 2246711Y
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- prop
- hook
- hanging
- pull chain
- 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 step-by-step hydraulic prop drawer suitable for the prop recovering of the coal-mining working face of individual hydraulic props. The utility model mainly comprises a double-acting oil cylinder and a hanging pull chain. One end of the double-acting oil cylinder is provided with a walking pull chain provided with a hanging hook, the other end of the double-acting oil cylinder is provided with a hanging hook, and one end of the hanging pull chain is provided with a hanging hook. The embedded prop can be drawn through telescoping the oil cylinder and removing the hanging hook and the hanging pull chain. The prop drawer has the advantages of simple structure, small size, light weight and simple and convenient operation. Compared with other prop recovering modes, the work efficiency is improved 5-10 times.
Description
The utility model relates to a kind of pivot extractor, a kind of step type hydraulic pivot extractor that is applicable to the pillar recovery of hydraulic prop coal work of more specifically saying so.
At present, the coal face support of China's coal-mine equipment, except that the whole self-advancing hydraulic support of a part, the hydraulic prop that mainly uses early eighties to grow up.Coal amount with the stope of hydraulic prop accounts for more than 70%.But returning and removing the pillar that is buried is a long-standing difficult problem.At present, returning the mode of removing has three kinds: a kind of drawing hoist of using, and the 2nd, use the hydraulic pressure moving device, the 3rd, rely on manpower; Use drawing hoist, need install drawing hoist, switch and special signal system, not only occupied limited space, down-hole and increased equipment, also will constantly move equipment along with the propelling of work plane, so seldom be used at face up and down trough; Use the hydraulic pressure moving device, because of not moving, the scope of application is very little, and randomness is poor, and the site environment of inapplicable complexity needs.Therefore, be to adopt the manual recovery pillar in most cases, the manual recovery pillar, time-consuming, effort, dangerous, not thorough, it is general to lose the post phenomenon, has caused great waste.
The purpose of this utility model proposes a kind of step type hydraulic pivot extractor simple in structure, easy to use.
The purpose of this utility model can realize in the following manner: a kind of step type hydraulic pivot extractor includes oil cylinder, described oil cylinder is a two-way cylinder, be fixed with reversal valve on it, the oil cylinder left end is fixed with the slide fastener of taking a step, there is hook the end of slide fastener, the other end is provided with hook, in addition, also is furnished with the slide fastener that hangs of end band hook.
The utility model compared with prior art has following advantage: this pivot extractor can be used for all stopes that use hydraulic prop, its volume is little, in light weight, easy and simple to handle, safe and reliable, the work efficiency height, than having improved 5～10 times of work efficiency with drawing hoist or artificial prop drawing, in addition, also can be used for the girder steel Hui Che of the upper and lower crossheading of work plane, the installation of face machinery equipment, maintenance and other suitable hanging are drawn or lifting work.
Description of drawings:
Accompanying drawing 1 is a structural front view of the present utility model.
Accompanying drawing 2 is the utility model work schematic diagrames.
The utility model is described in further detail with reference to the accompanying drawings:
Shown in accompanying drawing 1: a kind of step type hydraulic pivot extractor, include the double acting that can stretch, contract by hydraulic action and pull out post oil cylinder 1 and be fixed on the reversal valve 2 that pulls out on the post oil cylinder 1, by regulating reversal valve 2, stretching out, shrinking of post oil cylinder 1 pulled out in control.Left end at oil cylinder 1 is provided with the slide fastener 3 of taking a step, and there is hook 6 end of slide fastener 3, is provided with the auxiliary chain 5 of hook 4 and band hook at the other end of oil cylinder 1.
Shown in accompanying drawing 2: Fig. 2 has showed the work schematic diagram of step type hydraulic pivot extractor.On the hinge joint back timber that is buried pillar 9 axial directions or other support, choosing suitable bearing point, utilize rope sling, hook is hooked on the rope sling, hook can 360 ° turns to, and rope sling and hook make pivot extractor keep the best to be subjected to force direction.There is a hook end of 7 to be fixed on to be buried on the pillar 9, then oil cylinder 1 is all stretched out with hanging slide fastener 8, takes a step to link up with 6 and hang over and hang on the slide fastener 8, make and hang slide fastener 8 and be in tension substantially, to oil cylinder 1 fluid injection, oil cylinder 1 is shunk again, pulled out thereby will bury pillar 9, if a stroke is not enough, can auxiliary chain be hung over and hang on the slide fastener 8, in order to avoid make burying pillar 9 retractions, oil cylinder 21 stretches out, link up with 6 again by taking a step and hang over and hang on the slide fastener 8, oil cylinder 21 shrinks.Repeat said process, be drawn out until burying pillar 9.
Claims (1)
1. step type hydraulic pivot extractor, include oil cylinder (1), it is characterized in that: described oil cylinder (1) is a two-way cylinder, be fixed with reversal valve (2) on it, oil cylinder (1) left end is fixed with the slide fastener of taking a step (3), and there is hook (6) end of slide fastener (3), and the other end is provided with the auxiliary chain (5) of hook (4) and band hook, that in addition, also is furnished with end band hook (7) hangs slide fastener (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240857 CN2246711Y (en) | 1995-11-10 | 1995-11-10 | Step-by-step hydraulic prop drawer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95240857 CN2246711Y (en) | 1995-11-10 | 1995-11-10 | Step-by-step hydraulic prop drawer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2246711Y true CN2246711Y (en) | 1997-02-05 |
Family
ID=33882361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95240857 Expired - Fee Related CN2246711Y (en) | 1995-11-10 | 1995-11-10 | Step-by-step hydraulic prop drawer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2246711Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927530A (en) * | 2020-06-19 | 2020-11-13 | 中国煤炭科工集团太原研究院有限公司 | Rescue withdrawing device for underground excavation and mining equipment and using method thereof |
-
1995
- 1995-11-10 CN CN 95240857 patent/CN2246711Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927530A (en) * | 2020-06-19 | 2020-11-13 | 中国煤炭科工集团太原研究院有限公司 | Rescue withdrawing device for underground excavation and mining equipment and using method thereof |
| CN111927530B (en) * | 2020-06-19 | 2022-03-08 | 中国煤炭科工集团太原研究院有限公司 | Rescue withdrawing device for underground excavation and mining equipment and using method thereof |
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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 |