CN88203818U - Sliding hydraulic prop with double carrying bar - Google Patents
Sliding hydraulic prop with double carrying bar Download PDFInfo
- Publication number
- CN88203818U CN88203818U CN 88203818 CN88203818U CN88203818U CN 88203818 U CN88203818 U CN 88203818U CN 88203818 CN88203818 CN 88203818 CN 88203818 U CN88203818 U CN 88203818U CN 88203818 U CN88203818 U CN 88203818U
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- hydraulic prop
- back rest
- hydraulic
- axle beam
- prop
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Abstract
Disclosed is a sliding hydraulic support frame with double top beams. The utility model is characterized in that back beams are two beams in parallel, front beams are positioned in back beams; the front part of the front beam is provided with a front cantilever, the back end is connected with a roof cutting prop through a steel plate, and the front beam and the back beam guide each other, form a two points support and move forwards alternately through a dovetail slot-shaped guide device and a square column head with a hole in the middle, achieving the purpose of no empty roof and no discharge during the beam shifting process; the roof cutting prop can swing at will to form an angle, overcoming the problems of beam blowing and beam twiddling which are caused by the roof pressure and when the roof collapses.
Description
The utility model belongs to the Double Tops beam gliding hydraulic bracket that a kind of coal mining work plane uses.
At present, domestic existing slippage bracket mainly contains two kinds: a kind of is the HDy type support of being produced by engineering company of Beijing Coal Mining Administration, and another kind is the ZFTL-1 type support of being produced by Taian Machinery Plant, Shandong Coal Mine, and its structure all has the front-axle beam and the back rest.HDy type support does not have supporting to top board when moving the front-axle beam or the back rest, cause empty top, simultaneously the front-axle beam and the back rest in moving process, be any hang form cantilever-shaped, poor stability.Although ZFTL-1 type support is when moving the front-axle beam or the back rest, set up a sky top that hydraulic prop is safeguarded to cause, but the supporting area is little, poor for broken loose roof supporting effect, dangerous, simultaneously the front-axle beam and back rest arm length, cantilevered weights in moving process is big.In addition, above-mentioned two kinds of supports itself all do not overcome roof pressure and collapse when falling to " blowing frame " and " sth. made by twisting frame " measure of support.
Task of the present utility model provide a kind of when moving frame the weight of front-axle beam or the back rest become 2 supportings, no cantilever, and in moving the frame process to top board do not unload, not empty top, can also prevent simultaneously because roof pressure and collapsing when falling " the blowing frame " of support and the slippage bracket of " sth. made by twisting frame ".
Task of the present utility model is realized by following technical proposals.
Below in conjunction with the description of drawings the technical solution of the utility model.
Fig. 1 is the front view of contoured cradle structure;
Fig. 2 is the vertical view of contoured cradle structure;
Fig. 3 is the A-A sectional drawing of Fig. 1;
Fig. 4 is the B-B sectional drawing of Fig. 1;
Fig. 5 is the C-C sectional drawing of Fig. 1.
The sliding hydraulic prop with double carrying bar that the utility model proposes is made up of hollow front-axle beam 2, the back rest 1 and several hydraulic prop. Front-axle beam 2, the back rest 1 are rectangular hollow structure.
Hollow front-axle beam 2 is with two hydraulic props 5,14, these two hydraulic prop tops are provided with the column cap 4 of dove-tail, hollow front-axle beam 2 passes the dovetail groove of these two column caps 4, thereby realized front-axle beam 2 and hydraulic prop 5,14 be connected, hydraulic prop 5,14 can regulate its position on front-axle beam 2 as required. Hollow front-axle beam 2 anterior abdomens contain forestope 3, forestope jack 17; The cylinder body of forestope jack 17 is connected with front-axle beam 2, and piston rod is connected with forestope 3; The piston rod of forestope jack 17 stretches out and retracts, and has realized that forestope 3 stretches out in front-axle beam 2 abdomens and retracts. The rear portion abdomen of front-axle beam 2 contains push-and-pull jack 18, and the cylinder body of push-and-pull jack 18 is connected with front-axle beam 2, and piston rod is connected with the back rest 1, realizes pushing away, drawing of forward and backward beam with this. The baseplane, rear end of front-axle beam 2 is connected with steel plate 12 front ends with bolt, there is a circular hole at the rear portion of steel plate 12, cut top hydraulic prop 10 and pass this circular hole, circular hole has certain gap with the junction of cutting top hydraulic prop 10, cut that top hydraulic prop 10 can move up and down certain distance in this circular hole and at Circular Aperture to any swing certain angle, cut cap and the middle fixing limited block 11 on top hydraulic prop 10 tops, define and cut the distance that top hydraulic prop 10 moves up and down in the circular hole of steel plate 12.
The back rest 1 be two root architectures identical, be parallel to each other, between the beam of a spacing is arranged, its rear portion has the square column cap 9 usefulness bearing pins 20 of square opening to be connected with the centre that hydraulic prop 13 tops are provided with; Its front portion is connected respectively with two hydraulic props, the 8 usefulness bearing pins 19 that have guiding device 6; Guiding device 6 can be the dove-tail gathering sill, and stretch out to both sides the dovetail groove bottom, and on its outer rim of stretching out, have circular hole, two hydraulic props 8 that are connected with the back rest 1 pass this two circular holes respectively, there is certain clearance this circular hole and hydraulic prop 8 junctions, can move a certain distance and radially swing an angle arbitrarily at circular hole for hydraulic prop 8 is upper and lower in circular hole; The limited block 7 that the column cap of hydraulic prop 8 and middle part are fixing defines hydraulic prop 8 upper and lower mobile distance in the circular hole of guiding device 6.
Hollow front-axle beam 2 and the hydraulic prop 5,14 that is attached thereto thereof, steel plate 12, cut in the middle of two beams that top hydraulic prop 10 all is positioned at the back rest 1; Front-axle beam 2 passes the dovetail groove of guiding device 6; Guiding device 6 front-axle beam 2 with two hydraulic props 5,14 between, and can move arbitrarily with front and back and do not throw off along upper and lower the moving a certain distance of front-axle beam 2, thereby also make hydraulic prop 8 front-axle beam 2 with two hydraulic props 5,14 between, and can be along front-axle beam 2 front and back move arbitrarily; Connect front-axle beam 2 and the steel plate 12 of cutting top hydraulic prop 10, pass the square opening of square column cap 9 centres; Square column cap 9 cut top hydraulic prop 10 and front-axle beam 2 rear portions with hydraulic prop 14 between, and can move arbitrarily and upper and lower moving a certain distance along steel plate 12 front and back betwixt, thereby hydraulic prop 13 is being cut between top hydraulic prop 10 and the hydraulic prop 14, and can be moved arbitrarily along steel plate 12 front and back.The piston rod of the push-and-pull jack 18 in the front-axle beam 2 rear portion abdomens is connected with square column cap 9 with the back rest 1 by bearing pin 20, realizes front-axle beam 2 and the back rest 1 alternately slippage forward with this.
The course of work of the present utility model is:
During operate as normal, front-axle beam 2 and the back rest 1 equal top support plate, forestope 3 stretches out in front-axle beam 2 abdomens.
When moving the back rest 1, three hydraulic props 8 that will be connected earlier with the back rest 1,13 unloadings are also mentioned its cylinder body, at this moment, the back rest 1 leaves top board and falls, the front portion is dropped on the outer rim of guiding device 6, be hung on the guiding device 6 with the back rest 1 anterior two hydraulic props 8 that are connected, guiding device 6 hangs on the lower edge of front-axle beam 2 by its dovetail groove, the back rest 1 rear portion falls simultaneously, middle square opening by square column cap 9 is pressed on the steel plate 12, and hydraulic prop 13 also is hung on the square column cap 9, like this, the weight of the back rest 1 and each parts of being attached thereto thereof is 2 supportings, no cantilever.Give 18 fluid injections of push-and-pull jack, its piston rod withdrawal, thereby the pulling back rest 1, square column cap 9, guiding device 6 and hydraulic prop 8,13 respectively along the lower edge of front-axle beam 2 and steel plate 12 forward slippage to the needs position, then, put down the cylinder body of three hydraulic props 8,13, and give its fluid injection, make the back rest 1 top support plate.When moving the back rest 1, front-axle beam 2 and cut top hydraulic prop 10 top support plate all the time, thus realized in moving the frame process, not unloading, the purpose on empty top not.The back rest 1 is in front-axle beam 2 and cuts in the top board scope of 10 supportings of top hydraulic prop, so safe and reliable in moving process.
When moving front-axle beam 2, two hydraulic props 5,14 that are attached thereto and cut top hydraulic prop 10 and at first unload and mention its cylinder body, be hung on the front-axle beam 2 and steel plate 12 on, this moment front-axle beam 2 and cut top hydraulic prop 10 and leave top board, front-axle beam 2 drops in the dovetail gathering sill of guiding device 6, connecting the steel plate 12 of cutting top hydraulic prop 10 and front-axle beam 2 drops in the middle square opening of square column cap 9, like this, the weight of front-axle beam 2 and the parts that are attached thereto thereof becomes 2 supportings, thereby has overcome arm length, shortcoming that cantilevered weights is big.Give 18 fluid injections of push-and-pull jack, its cylinder body moves forward, thereby promote front-axle beam 2 with cut top hydraulic prop 10 and hydraulic prop 5,14 respectively along the dovetail groove of guiding device 6 and by steel plate 12 along the middle square opening of square column cap 9 forward slippage to the needs position, put down two hydraulic props 5,14 then and cut the cylinder body of top hydraulic prop 10, and give its fluid injection, make front-axle beam 2 and cut top hydraulic prop 10 top support plate.Cut top hydraulic prop 10 when top support plate, can be according to the situation at roof pressure and work plane inclination angle, swing a suitable angle top support plate, so not only play the top effect of cutting, and overcome roof pressure and collapse when falling " blowing frame " and " sth. made by twisting frame " of support.Forestope 3 in the front-axle beam 2 anterior abdomens can stretch at any time according to top board situation and support process requirement.When moving front-axle beam 2, the back rest 1 is top support plate all the time, has realized not unloading, the purpose on empty top not.In addition, front-axle beam 2 in moving process almost all in the top board scope of the back rest 1 supporting, so safe and reliable.Because the front-axle beam 2 and the back rest 1 lead in moving process each other, when moving front-axle beam 2, the back rest 1 top support plate; Front-axle beam 2 top support plate when moving the back rest 1, thereby not crooked, the Tumbler shelf of support when moving frame, good stability.
The hydraulic prop 5,8,13,14 that the utility model is used and cut top hydraulic prop 10 is the existing standard product, and post is two flexible but it is lived.Hydraulic system keeps former open system, and each hydraulic prop flexible can be operated separately, also can install high-pressure rubber pipe and valve group centralized Control additional, can this operation when moving frame, and also can be neighboring frame-operated.
The utility model makes it have following advantage owing to adopted said structure and technology:
1. in moving the frame process, forward and backward beam all becomes 2 supportings, no cantilever.
2. in moving the frame process, top board is not unloaded, not empty top, safe and reliable.
3. forward and backward beam leads in moving process each other, and support is not crooked when moving frame, Tumbler shelf, good stability.
4. support itself can prevent roof pressure and collapse when falling to " blowing frame " and " sth. made by twisting frame " of support.
5. owing to above-mentioned 4 advantages, so the compliance of this support is good.
Claims (7)
1, the Double Tops beam gliding hydraulic bracket that uses for coal-face is made up of hollow front-axle beam 2, the back rest 1 and six roots of sensation hydraulic prop, it is characterized in that:
1., hollow front-axle beam 2 has two hydraulic props 5,14, its abdomen contains forestope 3, forestope jack 17, push-and-pull jack 18, its rear end by steel plate 12 with cut top hydraulic prop 10 and link to each other;
2., the back rest 1 be two be parallel to each other, between the beam of certain distance is arranged, its rear portion with the column cap 9 that is provided with hydraulic prop 13 tops link to each other, its front portion links to each other with the hydraulic prop 8 that has guiding device 6;
3., hollow front-axle beam 2 pass the anterior hydraulic prop 8 that is provided with of the back rest 1 with guiding device 6, and be positioned in the middle of the back rest 1, link to each other with the back rest 1 by the push-and-pull jack 18 in its abdomen.
2, according to the said slippage bracket of claim 1, it is characterized in that: hollow front-axle beam 2 has two hydraulic props 5,14, and every hydraulic prop all is provided with dove-tail column cap 4 on its top.
3, according to the said slippage bracket of claim 1, it is characterized in that: the back rest 1 rear portion has a hydraulic prop 13, and this hydraulic prop top has the square column cap 9 of square opening in the middle of being provided with, its top have two can be for the pin-and-hole that is connected with the back rest 1.
4, according to the said slippage bracket of claim 1, it is characterized in that: the rear end of hollow front-axle beam 2 links to each other with the front end of steel plate 12, steel plate 12 passes the middle square opening of square column cap 9, steel plate 12 rear portions open one for cutting the circular hole that top hydraulic prop 10 passes, and there is certain clearance the junction of circular hole and breaking-off timber 10.
5, according to the said slippage bracket of claim 1, it is characterized in that: guiding device 6 is the swallow-tail form gathering sill, and stretches out to both sides bottom the swallow-tail form gathering sill, and has the circular hole that passes for hydraulic prop on its outer rim of stretching out.
6, according to the said slippage bracket of claim 1, it is characterized in that: the back rest 1 front portion has two hydraulic props 8, and these two hydraulic props pass two circular holes of guiding device 6 respectively, and there is certain clearance circular hole and hydraulic prop 8 junctions.
7, according to the said slippage bracket of claim 1, it is characterized in that: cut top hydraulic prop 10 and hydraulic prop 8 and have limited block 11,7 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88203818 CN88203818U (en) | 1988-02-27 | 1988-02-27 | Sliding hydraulic prop with double carrying bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88203818 CN88203818U (en) | 1988-02-27 | 1988-02-27 | Sliding hydraulic prop with double carrying bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88203818U true CN88203818U (en) | 1988-09-07 |
Family
ID=4838552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88203818 Withdrawn CN88203818U (en) | 1988-02-27 | 1988-02-27 | Sliding hydraulic prop with double carrying bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88203818U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365244C (en) * | 2004-02-20 | 2008-01-30 | 郑州煤矿机械集团有限责任公司 | Hydraulic supporter for tunnel digging working face |
| CN100371559C (en) * | 2004-12-10 | 2008-02-27 | 兖州煤业股份有限公司 | Hydraulic supporter for end of widening working face |
| CN102251790A (en) * | 2011-08-05 | 2011-11-23 | 中国矿业大学 | Mining and filling integrated hydraulic support enabling double top beams to be coaxially hinged with four connecting rods |
| CN103883337A (en) * | 2014-03-24 | 2014-06-25 | 神华集团有限责任公司 | Fan-shaped section supporting hydraulic support of fully-mechanized coal mining retracement working face |
| CN106353199A (en) * | 2016-10-20 | 2017-01-25 | 山东科技大学 | Method for field real-time monitoring of creep type rock burst risk |
-
1988
- 1988-02-27 CN CN 88203818 patent/CN88203818U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365244C (en) * | 2004-02-20 | 2008-01-30 | 郑州煤矿机械集团有限责任公司 | Hydraulic supporter for tunnel digging working face |
| CN100371559C (en) * | 2004-12-10 | 2008-02-27 | 兖州煤业股份有限公司 | Hydraulic supporter for end of widening working face |
| CN102251790A (en) * | 2011-08-05 | 2011-11-23 | 中国矿业大学 | Mining and filling integrated hydraulic support enabling double top beams to be coaxially hinged with four connecting rods |
| CN103883337A (en) * | 2014-03-24 | 2014-06-25 | 神华集团有限责任公司 | Fan-shaped section supporting hydraulic support of fully-mechanized coal mining retracement working face |
| CN106353199A (en) * | 2016-10-20 | 2017-01-25 | 山东科技大学 | Method for field real-time monitoring of creep type rock burst risk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |