CN201546744U - Bottom lifting device of hydraulic bracket of thin coal seam - Google Patents
Bottom lifting device of hydraulic bracket of thin coal seam Download PDFInfo
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- CN201546744U CN201546744U CN2009202803146U CN200920280314U CN201546744U CN 201546744 U CN201546744 U CN 201546744U CN 2009202803146 U CN2009202803146 U CN 2009202803146U CN 200920280314 U CN200920280314 U CN 200920280314U CN 201546744 U CN201546744 U CN 201546744U
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- oil cylinder
- bottom lifting
- lifting
- valve
- hydraulic
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Abstract
The utility model relates to a bottom lifting device of a hydraulic bracket of a thin coal seam, comprising a bottom lifting cylinder 1, base plates 3, a bottom lifting cylinder hydraulic control circuit and the like. The front end of the base plate 3 is hinged on a connecting seat of the front end of a base seat 4 by a connecting pin 2 to form a folding type base plate. The bottom lifting cylinder 1 adopts a small-size single-action bottom lifting cylinder, most of the cylinder is embedded in the base seat 4, and a piston rod head 9 is a ball head. The two base plates 3 are respectively arranged at the left and the right. The bottom lifting cylinder hydraulic control circuit comprises a bottom-lifting and bracket-moving linked control circuit and a separately bottom lifting control circuit. The folding base plate can effectively prevent the coal slurry from entering the inside of the base seat. The bottom lifting cylinder has small volume and small occupied space and does not influence the pedestrian space. The bottom lifting cylinder can realize separately bottom lifting control and linked control of lifting the bottom and moving the bracket. The utility model provides a novel bottom lifting device for solving the problems that the coal slurry blocks the middle shift of the base seat and the moving of the bracket is difficult due to incapable setting of the universal bottom lifting device by the hydraulic bracket of the thin coal seam.
Description
Technical field
The utility model relates to the coal mine fully-mechanized mining hydraulic support, particularly a kind ofly can solve the hydraulic support for low coal seam bottom lifting device that moves the frame problem in the end of lifting that hydraulic support for low coal seam runs into the base plate weak seam.
Background technology
At present, China combines the technology of adopting and reaches its maturity aspect the thinner seam exploitation.But for fully mechanized mining supporter, particularly be suitable for the hydraulic support for low coal seam below a meter, because row's coal space is little, run into the base plate weak seam, base plate shale rock stratum fills up base easily, causes moving difficulty, increases the workload that the workman clears up coal slime.The medium-thickness seam hydraulic support can solve easily by setting up bottom raising mechanism, but for Bracket in Thin Coal Seam, because spatial constraints can't be provided with traditional bottom lifting device.China has verified the coal reserves girdle and has accounted for more than 46%, and thin seam mining plays an important role for keeping coal production to satisfy the national economic development.Solving hydraulic support for low coal seam causes coal slime obstruction base middle-grade necessary with the moving difficulty problem because of bottom lifting device can't be set.
Summary of the invention
Move the frame problem in order to solve the end of lifting that hydraulic support for low coal seam runs into the base plate weak seam, the utility model provides a kind of hydraulic support for low coal seam bottom lifting device, and it can solve hydraulic support for low coal seam and cause the base plate coal slime to stop up the middle-grade moving difficulty problem that causes of base because of common hydraulic support bottom lifting device can't be set.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be:
The hydraulic support for low coal seam bottom lifting device is mainly by lifting end oil cylinder, backing plate, and the hydraulic control circuit of lifting end oil cylinder is formed.Its backing plate adopts the folding paper backing plate: the backing plate front end is hinged on the Connection Block of base front end by connecting pin.Lifting end oil cylinder adopts the small size single-acting to lift end oil cylinder.About two major parts of lifting end oil cylinder be embedded in the base body.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted can also be:
The end oil cylinder piston club head of lifting of hydraulic support for low coal seam bottom lifting device is a bulb, backing plate be about two.The hydraulic control circuit of lifting end oil cylinder comprises lifts the end with the control loop that moves frame interlock with lift end control loop separately; Two control loops are specific as follows:
A. lift the end and the control loop that moves the frame interlock: control valve places when trying to stop people from fighting each other the position, and its high-pressure rubber pipe of trying to stop people from fighting each other is divided into two-way through threeway: the one tunnel connects the epicoele interface of passing jack, and hydraulic support is tried to stop people from fighting each other; Another road connects alternately first interface of valve, connects two respectively and lifts end jack cavity of resorption by alternately valve the 3rd interface, second threeway, and hydraulic support lifts; At this moment, alternately valve second interface sealing.
B. lift end control loop separately: control valve places when lifting position, the end, and it is lifted end high-pressure rubber pipe and connects alternately second interface of valve, after alternately the 3rd interface, second threeway of valve connect two respectively and lift end oil cylinder cavity of resorption, hydraulic support lifts; At this moment, alternately first interface of valve sealing.
The beneficial effects of the utility model are:
The folding paper backing plate prevents that effectively coal slime from entering base inside when 1. lifting the end.Can solve hydraulic support for low coal seam causes the soft rock coal slime to stop up the middle-grade moving difficulty problem that causes of base because of bottom lifting device can't be set.
2. lift end oil cylinder and adopt single-acting small size oil cylinder, volume is small and exquisite, and major part is embedded in the base body, and it is little to take up room, and does not influence the pedestrian space.It is constant to keep former hydraulic pressure rack body structure.
3. can realize lifting separately the end controls and lifts the end and move frame interlock control.
Description of drawings
Fig. 1 is the structural representation of the utility model hydraulic support for low coal seam bottom lifting device.
Fig. 2 is the backing plate of bottom lifting device and the draw bail schematic diagram of lifting end oil cylinder and base.
Fig. 3, the 4th lifts structural representation master, the lateral view of end oil cylinder.
Fig. 5 is the hydraulic control system figure that lifts end oil cylinder and pass jack.
Among the figure: 1-lifts end oil cylinder or lifts end jack, 2-connecting pin, 3-backing plate, 4-base, 5-and pass that jack, 6-snap joint seat, 7-piston rod, 8-cylinder body, 9-piston rod head, 10-connect ear, 11-control valve or reversal valve, 12-threeway, 13-replaces valve or alternately one way valve, second threeway of 14-.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model hydraulic support for low coal seam bottom lifting device mainly is made up of hardware, Hydraulic Elements two large divisions.Hardware mainly contains: folding paper backing plate 3, connecting pin 2, Connection Block etc.Hydraulic Elements mainly contain: lift end oil cylinder 1, hydraulic control component reversal valve 11 and replace one way valve 13, hydraulic pressure auxiliary element high-pressure rubber pipe, threeway, elbow etc.
Primary structure at the bottom lifting device of the utility model hydraulic support for low coal seam shown in Fig. 1,2.
About two lift end oil cylinder 1, its top is fixedly connected respectively on the connection seat on the base 4 anterior left and right sides, about its bottom withstands on respectively on the end face of two backing plates 3.
The flexible change backing plate 3 by lifting end oil cylinder 1 when moving frame and lifting the end and the relative angle of base 4 bottom surfaces reach the purpose that support is lifted the end.Folding paper backing plate 3 helps preventing that coal slime from entering base 4 inside from the front portion of base.Pushing and sliding and move the passing jack 5 that frame uses and be positioned at base 4 central authorities.
The structure that end jack lifted in end oil cylinder or title of lifting at hydraulic support for low coal seam bottom lifting device shown in Fig. 3,4.Lifting end oil cylinder 1 mainly is made of cylinder body 8, piston rod 7, snap joint seat 6 and connection ear 10.
Lift end requirement for what satisfy support, the appearance and size that reduces to lift end jack reduces the influence for the human nature space, lifts end oil cylinder 1 and adopts single-acting small size oil cylinder form.
The connection ear 10 at cylinder body top is fixedly connected by bearing pin on the connection seat on base 4, and the major part of lifting end oil cylinder 1 is embedded in the base body 4.Use one-way cylinder because of lifting end oil cylinder 1, the snap joint seat 6 that connects high-pressure rubber pipe snap joint is only established one, and piston rod 7 retractions are by support gravity.Piston rod head 9 is a bulb, withstands the folding paper backing plate by piston rod head 9, realizes the purpose that bracket base is lifted and reduces friction.After moving frame and putting in place, lift end oil cylinder piston cavity pressure and descend, rely on the gravity of support will lift end oil cylinder piston bar 7 and push back.
Shown in Figure 4 bottom lifting device lifted the hydraulic control circuit of end oil cylinder and passing jack.
Be to improve the convenience and the operating efficiency of personnel operation support, support is lifted end function except can controlling separately, can also realize and move the interlock of frame action, and lifts at the end automatically when moving frame.The hydraulic control circuit of lifting end oil cylinder comprises to be lifted the end and moves frame interlock control loop and lift end control loop separately, by lifting end oil cylinder 1, pass jack 5, control valve 11, replacing valve 13, threeway 12, second threeway 14 etc. and form.Its hydraulic control circuit connection and control mode are as follows:
When a. support is tried to stop people from fighting each other:
11 dozens of control valves are to the position LJ that tries to stop people from fighting each other, and high-pressure emulsion is by high-pressure rubber pipe 1 ' to threeway 12, be divided into two-way after threeway 12: the one tunnel arrive the epicoele interface 2 of passing jack 5 ', make hydraulic support produce the action of trying to stop people from fighting each other; Another road arrive alternately the interface 3 of valve 13 ', will replace the valve steel ball and push interface 4 ' and make its sealing to, high-pressure emulsion from interface 5 ', threeway 13 arrives two and lifts end jack 1 cavity of resorption, and hydraulic support foundation is lifted.
B. during the support pushing and sliding:
11 dozens of control valves are to pushing and sliding position TL, high-pressure emulsion by high-pressure rubber pipe 7 ' to the cavity of resorption interface 6 of passing jack 5 ', make hydraulic support produce the pushing and sliding action.The emulsion of passing jack 5 epicoeles is by interface 2 ' come out by high-pressure rubber pipe 1 ' formation loop.If return hydraulic coupling when bigger, by the interface 3 ' arrival interface 4 of valve 13 alternately ', by high-pressure rubber pipe 8 ' formation loop.
When c. lifting the end separately:
11 dozens of control valves are to lifting position, end TD, high-pressure emulsion by high-pressure rubber pipe 8 ' to the interface 4 of valve 13 alternately ', by the effect closed interface 3 of valve steel ball alternately ', high-pressure emulsion by the interface 5 of valve 13 alternately ', threeway 14 arrives two and lifts end jack 1 cavity of resorption, and hydraulic support foundation is lifted.
Claims (3)
1. a hydraulic support for low coal seam bottom lifting device comprises and lifts end oil cylinder, backing plate, and the hydraulic control circuit of lifting end oil cylinder; It is characterized in that: said backing plate is folding paper backing plate (3), and backing plate (3) front end is hinged on the Connection Block of base (4) front end by connecting pin (2); The said end oil cylinder of lifting is lifted end oil cylinder (1) for the small size single-acting, about two major parts of lifting end oil cylinder (1) be embedded in the body of base (4).
2. hydraulic support for low coal seam bottom lifting device according to claim 1 is characterized in that: the said piston rod head (9) of lifting end oil cylinder (1) is a bulb, said backing plate (3) be about two.
3. hydraulic support for low coal seam bottom lifting device according to claim 1 and 2 is characterized in that: the said hydraulic control circuit of lifting end oil cylinder (1) comprises lifts the end with the control loop that moves frame interlock with lift end control loop separately; Two control loops are specific as follows:
A. lift the end and the control loop that moves the frame interlock: control valve (11) is in the position of trying to stop people from fighting each other (LJ), and its high-pressure rubber pipe (1 ') is divided into two-way through threeway (12): the one tunnel connects passing jack (5) epicoele interface (2 '), and hydraulic support is in the state of trying to stop people from fighting each other; Another road connects alternately first interface (3 ') of valve (13), connects two respectively and lifts end oil cylinder (1) cavity of resorption by alternately valve (13) the 3rd interface (5 '), second threeway (14), and hydraulic support foundation is in the state of lifting; At this moment, alternately valve (13) second interfaces (4 ') are in closed state;
B. lift end control loop separately: control valve (11) is in lifts position, the end (TD), its high-pressure rubber pipe (8 ') connects alternately valve (13) second interfaces (4 '), after alternately valve (13) the 3rd interface (5 '), second threeway (14) connect respectively and lift end oil cylinder (1) cavity of resorption, hydraulic support foundation is in the state of lifting; At this moment, alternately first interface (3 ') of valve (13) is in closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202803146U CN201546744U (en) | 2009-12-11 | 2009-12-11 | Bottom lifting device of hydraulic bracket of thin coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202803146U CN201546744U (en) | 2009-12-11 | 2009-12-11 | Bottom lifting device of hydraulic bracket of thin coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546744U true CN201546744U (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202803146U Expired - Fee Related CN201546744U (en) | 2009-12-11 | 2009-12-11 | Bottom lifting device of hydraulic bracket of thin coal seam |
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| CN (1) | CN201546744U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128041A (en) * | 2011-04-29 | 2011-07-20 | 三一重型综采成套装备有限公司 | Bottom uplifting device for hydraulic support and hydraulic support |
| CN102536285A (en) * | 2010-12-09 | 2012-07-04 | 郑州四维机电设备制造有限公司 | Bottom lifting mechanism for hydraulic bracket of thin coal bed |
| CN102661159A (en) * | 2012-04-17 | 2012-09-12 | 三一重型综采成套装备有限公司 | Base lifting mechanism and hydraulic support provided with the same |
| CN103410546A (en) * | 2013-08-29 | 2013-11-27 | 郑州煤矿机械集团股份有限公司 | Crotch type base of hydraulic support for coal mines |
| CN104612735A (en) * | 2014-12-20 | 2015-05-13 | 曲天智 | Temporary support hydraulic support for tunneling working face |
| CN108571337A (en) * | 2018-03-27 | 2018-09-25 | 陕西陕煤黄陵矿业有限公司 | A kind of hydraulic support for broken bottom plate moves frame method automatically |
-
2009
- 2009-12-11 CN CN2009202803146U patent/CN201546744U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536285A (en) * | 2010-12-09 | 2012-07-04 | 郑州四维机电设备制造有限公司 | Bottom lifting mechanism for hydraulic bracket of thin coal bed |
| CN102536285B (en) * | 2010-12-09 | 2014-04-09 | 郑州四维机电设备制造有限公司 | Bottom lifting mechanism for hydraulic bracket of thin coal bed |
| CN102128041A (en) * | 2011-04-29 | 2011-07-20 | 三一重型综采成套装备有限公司 | Bottom uplifting device for hydraulic support and hydraulic support |
| CN102128041B (en) * | 2011-04-29 | 2012-12-12 | 三一重型综采成套装备有限公司 | Bottom uplifting device for hydraulic support and hydraulic support |
| CN102661159A (en) * | 2012-04-17 | 2012-09-12 | 三一重型综采成套装备有限公司 | Base lifting mechanism and hydraulic support provided with the same |
| CN102661159B (en) * | 2012-04-17 | 2015-06-10 | 三一重型综采成套装备有限公司 | Base lifting mechanism and hydraulic support provided with the same |
| CN103410546A (en) * | 2013-08-29 | 2013-11-27 | 郑州煤矿机械集团股份有限公司 | Crotch type base of hydraulic support for coal mines |
| CN103410546B (en) * | 2013-08-29 | 2016-03-02 | 郑州煤矿机械集团股份有限公司 | Coal-mine hydraulic support opens a grade formula base |
| CN104612735A (en) * | 2014-12-20 | 2015-05-13 | 曲天智 | Temporary support hydraulic support for tunneling working face |
| CN108571337A (en) * | 2018-03-27 | 2018-09-25 | 陕西陕煤黄陵矿业有限公司 | A kind of hydraulic support for broken bottom plate moves frame method automatically |
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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: 20100811 Termination date: 20131211 |