CN2141465Y

CN2141465Y - Width supporting type flexible shield support adjustable

Info

Publication number: CN2141465Y
Application number: CN 92221901
Authority: CN
Inventors: 耒和章; 李先才
Original assignee: Furong Mineral Bureau
Current assignee: Furong Mineral Bureau
Priority date: 1992-12-18
Filing date: 1992-12-18
Publication date: 1993-09-01
Anticipated expiration: 2002-12-18

Abstract

The utility model provides a width supporting type flexible shield support adjustable. The utility model is characterized in that the width supporting type flexible shield support adjustable is provided with at least a set of supporting supports; the supporting supports comprise beam arms (2, 3) and an adjustable supporting brace whose both ends are respectively connected with the beam arms (2, 3), and the position of the adjustable supporting brace can be changed with the positions of the beam arms (2, 3). A support can be formed, and the shape of the support is like the Chinese character 'ren' or 'ba'. A hydraulic supporting jack or a spiral auxiliary adjustable supporting brace can be adopted ad the adjustable supporting brace. The width of the support can be adjusted, and the width supporting type flexible shield support adjustable has active supporting ability. The width supporting type flexible shield support adjustable is suitable for the normal exploitation in the big inclination angle whose thickness is changed a lot or in the half-edge coal seam. The surrounding rock control is reinforced for exploiting the soft roof, soft bottom, and soft coal. The utility model is convenient and safe to be operated and used.

Description

Width supporting type flexible shield support adjustable

The utility model relates to a kind of adjustable wide brace type flexible type shield that is used for colliery high inclination-angle and steeply-inclined seam mining.

At present, in China's coal-mine high inclination-angle and steeply-inclined seam mining, extensively adopted flexible type shield.This flexible type shield all adopts shaped steel processing, mostly is " one " font or " eight " font or " factory " font, has bigger limitation and certain problem:

1., do not have the wide property of accent, can not adapt to the bigger coal seam of varied in thickness.The variation of its support adaptation mining height can only be by the regulation and control of a chord position attitude, and its excursion is very little, generally only about 0.5m.In case when the coal seam variation was worth greater than this in the exploitation, support was difficult to normally exploit or loses and waste a large amount of coal seams resource.

2., do not have initiatively support performance, can only passively carry; Top, base plate are not had initiatively supporting role, top, base plate are especially lacked effective support control to the top soft, broken, that false roof is arranged, base plate, exploitation causes top board and Surrounding Rock Control difficulty, influences safe ordinary production.

3., mechanical characteristic is poor, so its support span generally is not more than 3～3.5m, adapts to the poor performance of thick coal-layer mining.

4., the many employings of the positioning control mode between each flexible type shield add " gallows timber " " interval iron " and are connected with the V-type card with wire rope, the easy displacement of support, and a chord position attitude is difficult to control, and influence is normally used.

5., can not the ACTIVE CONTROL roof and floor, meet that coal is thick, the inclination angle changes or the influence of minor structure, support is difficult to keep good working order, transfers the shelf operating difficulties, the support force inequality can occur, gnaws the end, scurries phenomenon such as cash.

In view of above reason, the objective of the invention is in order to provide a kind of support adjustable wide, have good adaptive capacity, be suitable in the bigger coal seam of varied in thickness normal exploitation, the Active support ability is arranged, easy for operation, safe adjustable wide brace type flexible type shield.

At least one group of supporting bracket arranged in the utility model, supporting bracket comprises beam arm (2,3), that two ends are connected with beam arm (2,3) respectively and adjustable adjustable supports (referring to Fig. 1, Fig. 5) with boom (2,3) position, can constitute " eight " font or " people " font structure or other structure, adopt adjustable wide support, form adjustable triangular structure, have the Active support ability, can adapt to the exploitation in the bigger coal seam of varied in thickness, safety.

Above-mentioned adjustable supports can adopt hydraulic pressure to support and do jin top (referring to Fig. 1, Fig. 3).

The nut sleeve that contains internal thread is arranged in the above-mentioned adjustable supports, two one ends are respectively charged in the nut sleeve and are connected with nut thread and screw rod (referring to Fig. 4) that the other end is connected with beam arm (2,3) respectively, when regulating the width of adjustable support, the mutual alignment that can regulate bolt and nut gets final product.

Above-mentioned beam arm (2,3) is provided with several symmetrical connection holes, and two connectors are through respectively in the two ends of adjustable supports and the connection holes on the beam arm and adjustable supports is connected (referring to Fig. 1) with beam arm (2,3), can increase the adjusting width of adjustable support.

Beam arm upper end in the above-mentioned supporting bracket is hinged by articulated joint, supporting bracket is three groups and forms the supporting bracket assembly, group is connected by bushing pipe with the articulated joint on beam arm top between organizing in each supporting bracket assembly, hollow coupling spindle is through successively respectively to organize on articulated joint and the bushing pipe each group beam arm top is connected, each lower end of organizing beam arm is hinged on respectively on the seat board, hinged steel wire be through successively make between the supporting bracket assembly on the hollow coupling spindle in each supporting bracket assembly hinged, connect steel cable and roll tightly (referring to Fig. 2) on the beam arm in each supporting bracket assembly and with the steel wire dog successively, the utility model is connected into along the flexible support of stope total length, make between support connect solid and reliable, prevent displacement, the group number of supporting bracket can depend on the circumstances in the supporting bracket assembly, can be two groups or more.

Above-mentioned connection steel cable is duplex type (referring to Fig. 2).

An above-mentioned seat board is provided with the pressure web plate, and wire lath places on the flexible type shield and the bottom presses solidly on a seat board (referring to Fig. 1, Fig. 5) by pressing web plate, effectively controls goaf spoil inbreak.

The utility model is used for normal exploitation when using, and hinged beam arm supports and opens through adjustable supports, and a seat board of beam arm lower end is close on the footstock of coal seam, and roof and floor is played effective support and control effect.The spoil of erecting dense individual props then is piled up on the support wire lath behind, and work plane stope country rock is played effectively reliable supporting control.When Coal Seam Thickness Change hour, the adjustable supports of need only stretching can make support width increase or dwindle, and when the thick variation of coal is big, then need adjust the position of slip adjustable supports on beam arm, cooperate the flexible of adjustable supports, make support width that bigger increase be arranged or dwindle.

Compare with existing flexible type shield, the utlity model has following advantage:

1, support is adjustable wide, have good adaptive capacity and be suitable for normal exploitation use in the bigger coal seam of varied in thickness, it transfers wide region can be from less than 1m to 4～6m even bigger, thereby has the exploitation that adapts to the violent complicated seam of varied in thickness, has improved resource recovery greatly.

2, compliance is strong, and work plane can be bows tiltedly or the pseudo-tilted supporter of bowing all can normally use.

3, work plane stope country rock is played effectively reliable supporting control, ensure safety in production.And the work plane working space is bigger, is beneficial to ventilate and operation.

4, support has Active support power, the Roof Control ability is strengthened greatly, especially effectively simple to breaking roof and soft top, cherry coal, the control of the soft end, safe and reliable, no matter from Coal Seam Thickness Change, roof and floor lithology and little geological structure, the compliance and the scope of application of tomography influence etc. all improve greatly and strengthen.

5, because support has support force, so the position attitude of support is more easy to control.Adjust in case of necessity and can move frame by on-load, make it when seam inclination changes, to remain the kilter of support.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1: the herringbone supporting bracket structural representation in the utility model

Fig. 2: the utility model combination schematic diagram

Fig. 3: adjustable supports in the utility model (hydraulic jack) structural representation

Fig. 4: adjustable supports in the utility model (screw pair) structural representation

Fig. 5: the Eight characters supporting bracket structural representation in the utility model

Embodiment 1:

Fig. 1-Fig. 4 provides the utility model embodiment 1 figure.

From Fig. 1, Fig. 2, can find out, be symmetrically distributed with several connection holes 4,5 on the girder steel arm 2,3 of the supporting bracket 1 in the utility model, its top is by monolithic

crown hinge joint

6 and 7 interlocks of biplate crown hinge joint, the two ends of adjustable supports 8 are connected with

support carriers

11,12 by connector 9,10 respectively, and the other end of

support carriers

11,12 is fastened on the beam arm by connector 13,14 and can regulates its position.

Among Fig. 2, the utility model is made up of several supporting bracket assemblies 15, and three groups of supporting brackets 16 are arranged in each supporting bracket assembly.In each supporting bracket assembly between group and the group corresponding articulated joint be connected by bushing pipe 17, steel shaft 18 is through respectively to be organized on articulated joint and the bushing pipe and locks with nut 19.Each lower end of organizing beam arm is hinged on respectively on the seat board 20.Hinged steel wire 21 be through successively make between the supporting bracket assembly on the steel shaft 18 of each supporting bracket assembly hinged.Dual-rope type connects steel cable 22 and rolls tightly on the beam arm of each supporting bracket assembly and with steel wire dog 23 successively.Hinge 24 connects each seat board.Individual layer or double-level-metal net 35 place on the entire bracket and its underpart to press solidly on each seat board by placing the pressure web plate 25 on each seat board as shown in Figure 1.

Sequence number 26 is the goaf among Fig. 1, and sequence number 27 is a roof, and sequence number 28 is a work plane.

Fig. 3 does the structural representation of jin top adjustable supports for hydraulic pressure.

Fig. 4 is the structural representation of screw pair adjustable supports.Comprising that 29, two one ends of nut sleeve are respectively charged in the nut sleeve is threaded with nut sleeve and screw rod 30 that the other end is connected with support carriers on the beam arm respectively.

Embodiment 2:

Fig. 2---Fig. 5 has provided the utility model embodiment 2 figure.Present embodiment 2 is basic same with embodiment 1, and not existing together is that 31,32 of two beam arms have increased hinged with two beam arms respectively crossbeam 33.Adjustable wide support 34 is housed respectively on crossbeam 33 and two beam arms.

Claims

1, adjustable wide brace type flexible type shield, it is characterized in that at least one group of supporting bracket arranged in the described flexible type shield, supporting bracket comprises beam arm (2,3), that two ends are connected with beam arm (2,3) respectively and with the adjustable adjustable supports in beam arm (2,3) position.

2, adjustable wide brace type flexible type shield as claimed in claim 1 is characterized in that described adjustable supports can adopt hydraulic pressure to support jack.

3, adjustable wide brace type flexible type shield as claimed in claim 1, it is characterized in that the nut sleeve that contains internal thread is arranged in the described adjustable supports, two one ends are respectively charged in the nut sleeve and are threaded with nut sleeve and screw rod that the other end is connected with Liang Bi (2,3) respectively.

4, adjustable wide brace type flexible type shield as claimed in claim 1, it is characterized in that described beam arm (2,3) is provided with several symmetrical connection holes, two connectors are through respectively in the two ends of adjustable supports and the connection holes on the beam arm (2,3) and adjustable supports and beam arm are right after.

5, adjustable wide brace type flexible type shield as claimed in claim 1, it is characterized in that the beam arm (2 in the described supporting bracket, 3) hinged by the articulated joint on it, supporting bracket is three groups and forms the supporting bracket assembly, group is connected by bushing pipe with the articulated joint on beam arm top between organizing in each supporting bracket assembly, hollow coupling spindle is through successively respectively to organize on articulated joint and the bushing pipe each group beam arm top is connected, each lower end of organizing beam arm is hinged on respectively on the seat board, hinged steel wire is through successively and makes between the supporting bracket assembly hingedly on the hollow coupling spindle in each supporting bracket assembly, connects steel cable and rolls tightly on the beam arm in each supporting bracket assembly and with the steel wire dog successively.

6, adjustable wide brace type flexible type shield as claimed in claim 5 is characterized in that described connection steel wire is a duplex type.

7, adjustable wide brace type flexible type shield as claimed in claim 5 is characterized in that being provided with the pressure web plate on a seat board, and wire lath places on the described flexible type shield and the bottom presses solidly on a seat board by pressing web plate.