CN105971651A - Falling prevention method for working surface of combined suspension moving hydraulic supports - Google Patents
Falling prevention method for working surface of combined suspension moving hydraulic supports Download PDFInfo
- Publication number
- CN105971651A CN105971651A CN201610546026.5A CN201610546026A CN105971651A CN 105971651 A CN105971651 A CN 105971651A CN 201610546026 A CN201610546026 A CN 201610546026A CN 105971651 A CN105971651 A CN 105971651A
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- CN
- China
- Prior art keywords
- combined suspension
- suspension moving
- moving hydraulic
- work surface
- back timber
- 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.)
- Pending
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- 239000000725 suspension Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000002265 prevention Effects 0.000 title abstract 2
- 230000003019 stabilising effect Effects 0.000 claims description 21
- 239000010878 waste rock Substances 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0034—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a goaf shield articulated to a base member
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention belongs to the field of coal mine hydraulic support application and particularly relates to a falling prevention method for the working surface of combined suspension moving hydraulic supports. The method comprises the steps that a plurality of combined suspension moving hydraulic supports are arranged on the working surface in a row; parallel hydraulic supports with stabilizing devices are inserted into the row of combined suspension moving hydraulic supports at interval; all supporting beams of the whole working surface are connected and fixed together to form a supporting beam combined body, and the combined suspension moving hydraulic supports of the whole working surface and the parallel hydraulic supports are connected and fixed together. By means of the method, the defect that the unstable working surface of combined suspension moving hydraulic supports in the prior art is likely to have the front lying and rear sitting type support falling phenomenon is overcome, and the stability and the safety of the whole working surface are remarkably improved.
Description
Technical field
The invention belongs to coal mine hydraulic supporting application, relate to a kind of method preventing down frame of coal mine hydraulic supporting, especially relate to
And a kind of anti-down method of combined suspension moving hydraulic support work surface.
Background technology
Combined suspension moving hydraulic support belongs to sliding class hydraulic support product, from putting goods on the market for over ten years, is widely applied.
Combined suspension moving hydraulic support has that volume is little, lightweight, convenient transportation, simple to operate, mobile flexibly, easy care maintenance and phase
To advantages such as safety, by the consistent favorable comment of users.But simultaneously as the back timber of combined suspension moving hydraulic support with pillar is
Articulated form, back timber does not the most have stabilizing mechanism, and support is originally as undefined structure.When support uses, set cap and work
Making face top plate contact, contact with floor undulation at the bottom of pillar post, under the support force effect of pillar, support forms one with roof and floor
Individual liptinite.Use it addition, combined suspension moving hydraulic support is multi rack in real work face simultaneously, make to connect about multi rack support
It is connected into one, improves the left and right stability of support.But, this support unstability in the longitudinal direction is but the most substantially
Improve.When the top board of work surface changes, back timber cannot be with top plate contact when being in effective holding state, and this support exists
Moving process is just likely to the accident of falling frame " front barrel extension and recoil type of lying prone " occur.Further, since combined suspension moving hydraulic support itself is not
Possess stability, be all dependent on adjacent supports frame to ensure stablizing of self, when adjacent frame is in non-supported state, be difficult to
Ensureing the stability of himself, when this situation concentration occurs on a large scale, what " front barrel extension and recoil type of lying prone " not only can occur falls frame now
As, and then the safety of harm work surface coal miner, even can cause the serious consequences such as heavy roof fall.At combined suspension moving hydraulic pressure
In the application process of support, tens of casualty accident occurred.To this end, need a kind of combined suspension moving hydraulic support work surface badly
Anti-down method, to solve this problem, and improve such force piece stability in the large and safety.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of improve colliery combined suspension moving hydraulic support work surface
The anti-down method of the combined suspension moving hydraulic support work surface of frame stability in the large and safety.
The present invention solves the technical scheme of problem: a kind of anti-down method of combined suspension moving hydraulic support work surface, including walking as follows
Rapid:
(1) several combined suspension moving hydraulic supports are arranged in a row at work surface: described combined suspension moving hydraulic support include back timber,
Front support mechanism, rear support mechanism, joist and advancing jack；
(2) in several combined suspension moving hydraulic supports described in a row, the parallel hydraulic support of band stabilising arrangement, institute are inserted in interval
State parallel hydraulic support include back timber, front support mechanism, rear support mechanism, joist, advancing jack, for fixing described top
Beam and the stabilising arrangement of described rear support mechanism angle；
(3) be connected and fixed formation joist assembly by all joists of whole work surface, and the combination of whole work surface is hanged
Moving hydraulic support and parallel hydraulic support are connected and fixed.
Further, in described step (2), in several combined suspension moving hydraulic supports, insert described in one also every n frame
Connection hydraulic support, n is integer, and 1≤n≤5.
Further, in described step (2), first respectively pacify at the head and the tail two ends of several combined suspension moving hydraulic supports described in a row
Fill a described parallel hydraulic support.
Further, in described step (3), connected, first by adjacent torr by adapter sleeve and bearing pin between adjacent joist
The two ends of beam are inserted in same adapter sleeve respectively, are then fixed with adapter sleeve by joist by bearing pin, thus achieve adjacent
The connection of two joists.In like manner, just all joists on work surface can be sequentially connected with.
Further, in described step (1), described front support mechanism and rear support mechanism are respectively supported at the lower section of back timber, institute
State joist and advancing jack is arranged on below back timber；Described front support mechanism includes two front standing pillars, described rear support mechanism
Including two back props.
Further, in described step (2), described front support mechanism and rear support mechanism are respectively supported at the lower section of back timber, institute
State joist and advancing jack is arranged on below back timber；Described front support mechanism includes two front standing pillars, described rear support mechanism
Including two back props.
Further, in described step (2), described stabilising arrangement includes base, front rod, back link, caving shield and balance
Bar；Described front rod one end is hinged with described caving shield bottom, and the other end is hinged with described base, described back link one end with
Described caving shield bottom is hinged, and the other end is hinged with described base, and the upper end of described caving shield is hinged with the rear portion of described back timber；
The two ends of the described gimbal lever are hinged with described caving shield and described back timber respectively；Described base, back link, front rod and caving shield
Constitute a quadric chain；The described gimbal lever includes mechanical type adjusting rod or hydraulic jack.
Further, in described step (2), described stabilising arrangement includes that guide post group and waste rock board, described guide post group include
Upper guide bush and lower guide rod；Described upper guide bush is affixed with described waste rock board, and described lower guide rod is connected with described base, described waste rock board
Affixed with the rear portion of described back timber；The upper guide bush of described guide post group and lower guide rod are matched in clearance, and upper guide bush and lower guide rod are along altogether
Same axially opposing slip.
Further, in described step (2), described stabilising arrangement includes that guide post group and waste rock board, described guide post group include
Upper guide bush and lower guide rod；Described upper guide bush is affixed with described back timber, and described lower guide rod is connected with described base, described waste rock board with
The rear portion of described back timber is affixed；The upper guide bush of described guide post group and lower guide rod are matched in clearance, and upper guide bush and lower guide rod are along common
Axially opposing slip.
The invention have the benefit that the present invention passes through interval in the common combined suspension moving formula hydraulic support that a row is unstable and inserts
Enter to have the parallel hydraulic support of band stabilising arrangement, and the hydraulic support of whole work surface is linked together, such that use
The top board change of existing work surface local, multi rack support can not effective roof supporting, the parallel hydraulic support of band stabilising arrangement because of self
Stability is able to maintain that self Tumbler shelf, and the ordinary stent passing through the instability that joist assembly can support the left and right sides does not falls
Frame, so by the effect of multi rack center rest, work surface would not occur the phenomenon of falling frame of " front barrel extension and recoil type of lying prone " so that whole
The safety of individual work surface is greatly improved.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the anti-down method of combined suspension moving hydraulic support work surface of the present invention；
Fig. 2 is the overall structure schematic diagram of the work surface using method shown in Fig. 1 to arrange；
Fig. 3 is the front elevational schematic of the parallel hydraulic support with a kind of stabilising arrangement；
Fig. 4 is the schematic side view of the parallel hydraulic support with a kind of stabilising arrangement shown in Fig. 3；
Fig. 5 is the front elevational schematic of the parallel hydraulic support with another kind of stabilising arrangement；
Fig. 6 is the schematic side view of the parallel hydraulic support with another kind of stabilising arrangement shown in Fig. 5.
In figure: 1-base, 2-back link, 3-front rod, 4-caving shield, the 5-gimbal lever, 6-back timber, 7-joist, 8-passage thousand
Jin top, 9-front support mechanism, 10-rear support mechanism, 11-joist assembly, 12-guide post group, 13-waste rock board, 14-combination is outstanding
Moving hydraulic support, 15-parallel hydraulic support.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, the present invention is further illustrated.
Embodiment one
As depicted in figs. 1 and 2, a kind of anti-down method of combined suspension moving hydraulic support work surface, comprise the steps:
(1) several combined suspension moving hydraulic supports 14 are arranged in a row at work surface: described combined suspension moving hydraulic support 14 includes
Back timber 6, front support mechanism 9, rear support mechanism 10, joist 7 and advancing jack 8；
(2) in several combined suspension moving hydraulic supports 14 described in a row, the parallel hydraulic support of band stabilising arrangement is inserted at interval
15, described parallel hydraulic support 15 includes back timber 6, front support mechanism 9, rear support mechanism 10, joist 7, advancing jack
8, for fixing the stabilising arrangement of described back timber 6 and described rear support mechanism 10 angle；
(3) be connected and fixed formation joist assembly 11 by all joists 7 of whole work surface, whole work surface
Combined suspension moving hydraulic support 14 and parallel hydraulic support 15 are connected and fixed.
In described step (2), in several combined suspension moving hydraulic supports 14, insert a described parallel hydraulic every n frame
Support 15, n is integer, and 1≤n≤5；In actual application, according to coal breakage mode (big gun is adopted, machine is adopted) and recovery method (
Secondary mining full height, Sub-Level Caving), the length of work surface and the situation of change of roof and floor, occur the risk of frame during support is used
Grade is estimated, then determines the numerical value of n.The work surface that risk class is high, n takes smaller value；The work surface that risk class is low,
N takes higher value.
In described step (2), first respectively install one at the head and the tail two ends of several combined suspension moving hydraulic supports 14 described in a row
Described parallel hydraulic support 15.
In described step (3), connected by adapter sleeve (not shown) and bearing pin (not shown) between adjacent joist 7
Connect, first the two ends of adjacent joist 7 are inserted in same adapter sleeve respectively, then by bearing pin, joist 7 is solid with adapter sleeve
Fixed.
In described step (1), as shown in Figure 3 and Figure 4, described front support mechanism 9 and rear support mechanism 10 are respectively supported at
The lower section of back timber 6, described joist 7 and advancing jack 8 are arranged on below back timber 6；Described front support mechanism 9 includes two
Root front standing pillar, described rear support mechanism 10 includes two back props.
In described step (2), as shown in Figure 3 and Figure 4, described front support mechanism 9 and rear support mechanism 10 are respectively supported at
The lower section of back timber 6, described joist 7 and advancing jack 8 are arranged on below back timber 6；Described front support mechanism 9 includes two
Root front standing pillar, described rear support mechanism 10 includes two back props.
In described step (2), as shown in Figure 3 and Figure 4, described stabilising arrangement include base 1, front rod 3, back link 2,
Caving shield 4 and the gimbal lever 5；Described front rod 3 one end is hinged with described caving shield 4 bottom, the other end and described base 1
Hinged, described back link 2 one end is hinged with described caving shield 4 bottom, and the other end is hinged with described base 1, described shielding
The upper end of beam 4 is hinged with the rear portion of described back timber 6；The two ends of the described gimbal lever 5 respectively with described caving shield 4 and described back timber
6 is hinged；Described base 1, back link 2, front rod 3 and caving shield 4 constitute a quadric chain；The described gimbal lever 5
Including mechanical type adjusting rod or hydraulic jack.
Embodiment two
As shown in Figure 5 and Figure 6, in the present embodiment, the described stabilising arrangement in step (2) is different from embodiment one, at this
In embodiment, described stabilising arrangement include guide post group 12 and waste rock board 13, described guide post group 12 include upper guide bush and under lead
Bar；Described upper guide bush is affixed with described waste rock board 13, and described lower guide rod is connected with described base 1, described waste rock board 13 and institute
The rear portion stating back timber 6 is affixed.The upper guide bush of described guide post group 12 and lower guide rod are matched in clearance, and upper guide bush and lower guide rod are along altogether
Same axially opposing slip.
In addition, other structures and methods step is identical with enforcement one.
Embodiment three
In the present embodiment, the described stabilising arrangement in step (2) includes guide post group 12 and waste rock board 13, described guide post
Group 12 includes upper guide bush and lower guide rod；Described upper guide bush is affixed with described back timber 6, and described lower guide rod is connected with described base 1,
Described waste rock board 13 is affixed with the rear portion of described back timber 6.The upper guide bush of described guide post group 12 and lower guide rod are matched in clearance,
Upper guide bush and lower guide rod are along common axially opposing slip.
In addition, other structures and methods step is identical with enforcement two.
The present invention is not limited to above-mentioned embodiment, and in the case of without departing substantially from flesh and blood of the present invention, those skilled in the art can
With any deformation expected, improve, replace and each fall within protection scope of the present invention.
Claims (9)
1. the anti-down method of a combined suspension moving hydraulic support work surface, it is characterised in that comprise the steps:
(1) several combined suspension moving hydraulic supports (14) are arranged in a row at work surface: described combined suspension moving hydraulic support (14)
Including back timber (6), front support mechanism (9), rear support mechanism (10), joist (7) and advancing jack (8)；
(2) in several combined suspension moving hydraulic supports (14) described in a row, the parallel hydraulic of band stabilising arrangement is inserted at interval
Support (15), described parallel hydraulic support (15) include back timber (6), front support mechanism (9), rear support mechanism (10),
Joist (7), advancing jack (8), it is used for fixing the described back timber (6) the stable dress with described rear support mechanism (10) angle
Put；
(3) be connected and fixed formation joist assembly (11) by all joists (7) of whole work surface, whole work
Combined suspension moving hydraulic support (14) and the parallel hydraulic support (15) of making face are connected and fixed.
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that described step
(2) in, in several combined suspension moving hydraulic supports (14), a described parallel hydraulic support (15) is inserted every n frame,
N is integer, and 1≤n≤5.
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that in described step
Suddenly, in (2), a described liquid in parallel is first respectively installed at the head and the tail two ends of several combined suspension moving hydraulic supports (14) described in a row
Pressure support (15).
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that in described step
Suddenly, in (3), connected by adapter sleeve and bearing pin between adjacent joist (7), first by the two ends of adjacent joist (7) respectively
Insert in same adapter sleeve, then by bearing pin, joist (7) is fixed with adapter sleeve.
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that described step
(1), in, described front support mechanism (9) and rear support mechanism (10) are respectively supported at the lower section of back timber (6), described joist
(7) it is arranged on below back timber (6) with advancing jack (8)；Described front support mechanism (9) includes two front standing pillars,
Described rear support mechanism (10) includes two back props.
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that described step
(2), in, described front support mechanism (9) and rear support mechanism (10) are respectively supported at the lower section of back timber (6), described joist
(7) it is arranged on below back timber (6) with advancing jack (8)；Described front support mechanism (9) includes two front standing pillars,
Described rear support mechanism (10) includes two back props.
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that described step
(2), in, described stabilising arrangement includes base (1), front rod (3), back link (2), caving shield (4) and the gimbal lever (5)；
Described front rod (3) one end is hinged with described caving shield (4) bottom, and the other end is hinged with described base (1), described after
Connecting rod (2) one end is hinged with described caving shield (4) bottom, and the other end is hinged with described base (1), described caving shield (4)
Upper end hinged with the rear portion of described back timber (6)；The two ends of the described gimbal lever (5) respectively with described caving shield (4) and described
Back timber (6) is hinged；Described base (1), back link (2), front rod (3) and caving shield (4) constitute a double leval jib
Mechanism；The described gimbal lever (5) includes mechanical type adjusting rod or hydraulic jack.
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that described step
(2), in, described stabilising arrangement includes that guide post group (12) and waste rock board (13), described guide post group (12) include leading
Set and lower guide rod；Described upper guide bush is affixed with described waste rock board (13), and described lower guide rod is connected with described base (1), described
Waste rock board (13) is affixed with the rear portion of described back timber (6)；The upper guide bush of described guide post group (12) and lower guide rod are that gap is joined
Closing, upper guide bush and lower guide rod are along common axially opposing slip.
The anti-down method of combined suspension moving hydraulic support work surface the most according to claim 1, it is characterised in that described step
(2), in, described stabilising arrangement includes that guide post group (12) and waste rock board (13), described guide post group (12) include leading
Set and lower guide rod；Described upper guide bush is affixed with described back timber (6), and described lower guide rod is connected with described base (1), described gear
Cash plate (13) is affixed with the rear portion of described back timber (6)；Upper guide bush and the lower guide rod of described guide post group (12) are matched in clearance,
Upper guide bush and lower guide rod are along common axially opposing slip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546026.5A CN105971651A (en) | 2016-07-12 | 2016-07-12 | Falling prevention method for working surface of combined suspension moving hydraulic supports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546026.5A CN105971651A (en) | 2016-07-12 | 2016-07-12 | Falling prevention method for working surface of combined suspension moving hydraulic supports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971651A true CN105971651A (en) | 2016-09-28 |
Family
ID=56951587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610546026.5A Pending CN105971651A (en) | 2016-07-12 | 2016-07-12 | Falling prevention method for working surface of combined suspension moving hydraulic supports |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971651A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459810A (en) * | 2020-10-19 | 2021-03-09 | 煤炭科学研究总院 | Fully-mechanized mining face hydraulic support anti-falling frame system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU846750A1 (en) * | 1979-10-29 | 1981-07-15 | Shapiro Natan A | Rower roof support set |
| SU1168728A1 (en) * | 1981-10-28 | 1985-07-23 | Karagandinskij Polt Institut | Power mine roof support |
| CN1434192A (en) * | 2002-01-22 | 2003-08-06 | 高学敏 | Combined roof support with drawing beam |
| CN2637735Y (en) * | 2003-07-04 | 2004-09-01 | 张建康 | Combined support with sliding beam |
| CN201288577Y (en) * | 2009-02-19 | 2009-08-12 | 苑军 | Combined rack with hanging mechanism for guidance moving beam |
| CN202284477U (en) * | 2011-09-03 | 2012-06-27 | 章士洲 | Split top beam combination suspension-transport hydraulic bracket |
| CN105545333A (en) * | 2016-01-29 | 2016-05-04 | 北京华创矿安科技有限公司 | Parallel-connection hydraulic support |
-
2016
- 2016-07-12 CN CN201610546026.5A patent/CN105971651A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU846750A1 (en) * | 1979-10-29 | 1981-07-15 | Shapiro Natan A | Rower roof support set |
| SU1168728A1 (en) * | 1981-10-28 | 1985-07-23 | Karagandinskij Polt Institut | Power mine roof support |
| CN1434192A (en) * | 2002-01-22 | 2003-08-06 | 高学敏 | Combined roof support with drawing beam |
| CN2637735Y (en) * | 2003-07-04 | 2004-09-01 | 张建康 | Combined support with sliding beam |
| CN201288577Y (en) * | 2009-02-19 | 2009-08-12 | 苑军 | Combined rack with hanging mechanism for guidance moving beam |
| CN202284477U (en) * | 2011-09-03 | 2012-06-27 | 章士洲 | Split top beam combination suspension-transport hydraulic bracket |
| CN105545333A (en) * | 2016-01-29 | 2016-05-04 | 北京华创矿安科技有限公司 | Parallel-connection hydraulic support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459810A (en) * | 2020-10-19 | 2021-03-09 | 煤炭科学研究总院 | Fully-mechanized mining face hydraulic support anti-falling frame system |
| CN112459810B (en) * | 2020-10-19 | 2022-05-27 | 煤炭科学研究总院 | Fully-mechanized mining face hydraulic support anti-falling frame system |
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Application publication date: 20160928 |
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