CN2536789Y

CN2536789Y - Anchor restorer for shaft support

Info

Publication number: CN2536789Y
Application number: CN 02228426
Authority: CN
Inventors: 张春然; 马保安
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-07
Filing date: 2002-02-07
Publication date: 2003-02-19
Anticipated expiration: 2012-02-07

Abstract

The utility model relates to an anchor removing device of anchor cables used for downhole support, comprising a bushing type front clipped jack, which is characterized in that, a cylinder-shaped anchor removing tool is connected with the bushing type jack; the lower end of the cylinder-shaped anchor removing tool is a connector used to connect the top part of the piston of the bushing type jack; an inner ring platform matched with an anchor ring is processed on the upper end face of the cylinder-shaped anchor removing tool. The utility model has the advantages that by using the anchor removing device, anchor beams, anchorages (comprising anchor rings and jaws) can be recycled and used repeatedly, and the mine support cost is lowered; for the mining faces having thick coal seam, caving coal operation needs to be adopted, and after the anchorages and anchor beams are removed, the operation is facilitated, the coal seam can be recycled, and the exploitation quantity is increased; for the underground coal mine goaf, roof caving is necessary, and after the anchor slabs and anchorages are removed, the roof can be smoothly laid down, the formation of gas accumulation area is avoided, and the mine potential safety hazard is eliminated; the utility model is a necessary common instrument for mining areas.

Description

Supporting anchor cable anchor restorer under the mine

(1) technical field

The utility model relates to a kind of mine support and moves back the anchor apparatus, supporting anchor cable anchor restorer under especially a kind of mine.

(2) background technology

At present, under the coal mine for than deep production and coal mining geology condition than all adopting cable bolting under the complicated situation, can reduce support cost, improve supporting intensity, adopt face safety, reliably play good effect guaranteeing, therefore just promote the use of.But lock after domestic used anchorage cable stretching machine can only reach desired stretching force by the stretch-draw jack with anchor head at present, its anchoring principle as shown in Figure 1, among the figure, 1 ｀ is an anchor ring, 2 ｀ are intermediate plate, and 3 ｀ are anchor slab, and 4 ｀ are anchor pole (also being steel strand), but though this anchorage style anchoring top board, but need caving or tunnel to return caving in time when removing at work plane, give and produce, safety causes a hidden trouble, because if goaf anchor cable anchor head is not removed, caving in time, then easily form the methane accumulation district, totally unfavorable to mine safety, and ground tackle can not reclaim, can't reuse, increase the cable bolting cost.

(3) summary of the invention

Supporting anchor cable anchor restorer under the matching used mine of card jack before a kind of and existing vertically-displacable that the purpose of this utility model designs at existing problem in the above-mentioned prior art just, this anchor restorer is simple in structure, easy to use, can be safely, reliably, quickly anchor slab, anchor ring, intermediate plate are returned, can make the ground tackle recycling, can avoid potential safety hazard again, the apparatus commonly used of a kind of mining area indispensability of can yet be regarded as.

The purpose of this utility model realizes by following scheme: supporting blocks jack before comprising vertically-displacable with the anchor cable anchor restorer under this mine, wherein: before vertically-displacable, connect a cylindrical shape on the card jack and move back ground tackle, cylindrical shape is moved back the connector of lower end for linking to each other with card jack piston top before the vertically-displacable of ground tackle, is processed with the interior ring platform that matches with anchor ring on its upper end end face.

In the utility model, in moving back the tube chamber of ground tackle, be provided with the cone-shaped clip stripper sleeve, this stripper sleeve can be integral structure, also can be two lobe formula structures; The lower end connector that cylindrical shape is moved back ground tackle can link to each other with vertically-displacable jack piston top by engage thread, also can connect by snap fit.

The concrete use of this anchor restorer is as follows: (1) is moved back cylindrical shape and is blocked on the stretch-draw jack before the ground tackle bottom is installed in vertically-displacable by screw thread; (2) jack hydraulic fluid port and manual pump or electrodynamic pump two hydraulic fluid ports are connected with high-pressure rubber pipe; (3) anchor pole (steel strand) is penetrated in the jack hollow cavity, make anchor restorer and ground tackle at a distance of a segment distance, anchor pole is by the locking of the tight mechanism of the preceding kayser in the jack; (4) operation oil pump, make jack piston protruding, make anchor restorer and anchor ring close, make jack piston outwards extend certain distance again, because anchor pole is by the locking of the retaining mechanism in the jack, then anchor pole and anchor ring relative motion, being about to anchor pole outwards pulls out, intermediate plate contacts with anchor restorer taper stripper sleeve, and intermediate plate is separated with anchor pole, and then intermediate plate is owing to deadweight is moved back in the ground tackle tube chamber to falling into; The operation oil pump makes the jack piston retraction, and anchor ring, intermediate plate and anchor beam (being backing plate) reclaim.(, use when only between intermediate plate and anchor pole, corrosion phenomena being arranged generally speaking, without the taper stripper sleeve.)

Advantage of the present utility model is:

1, uses this anchor restorer to reclaim and use anchor beam, ground tackle (comprising anchor ring, intermediate plate), every cover anchor beam is by 20 yuan, every cover ground tackle is by 20 yuan, reuse by average 3 times, with annual 50000 covers that use of certain mineral bureau, amount to 2,500,000 yuan, reuse 3 times, then only need 83.3 ten thousand yuan, cut down expenses 166.7 ten thousand yuan every year.

2, for the thicker face of adopting in coal seam, need to adopt the operation of caving coal, the ground tackle anchor beam is moved back anchor after, but convenient working reclaims the coal seam, increases yield.

3, need the top board caving for coal mine gob, the anchor slab ground tackle is moved back anchor after, can smoothly top board be put down, avoid forming the methane accumulation district, eliminate mine safety hidden danger, the apparatus commonly used of a kind of mining area indispensability of can yet be regarded as.

(4) description of drawings

Fig. 1 is a prior art down-hole supporting anchor structure schematic diagram.

Fig. 2 is the utility model user mode structural representation.

Fig. 3 is the working state schematic representation of the utility model when linking to each other with oil pump.

Among the figure, 1 is anchor ring, and 2 is intermediate plate, and 3 is anchor slab, and 4 is anchor pole (also for steel strand), and 5 move back ground tackle for cylindrical shape, and 6 be connector, and 7 be the cone-shaped clip stripper sleeve, and 8 is the preceding jack that blocks of vertically-displacable, and 9 is oil pipe, and 10 is oil pump.

(5) specific embodiment

As Fig. 2, shown in Figure 3: supporting comprises card jack 8 before the vertically-displacable with the anchor cable anchor restorer under this mine, wherein: before vertically-displacable, connect a cylindrical shape on the card jack 8 and move back ground tackle 5, the lower end connector 6 that cylindrical shape is moved back ground tackle links to each other with vertically-displacable jack piston top by engage thread, be processed with the interior ring platform that matches with anchor ring 1 on its upper end end face, in moving back the tube chamber of ground tackle 5, be provided with cone-shaped clip stripper sleeve 7.

Also can on moving back the sidewall of ground tackle, cylindrical shape offer observation port.

Claims

1, supporting anchor cable anchor restorer under a kind of mine, it blocks jack (8) before comprising vertically-displacable, it is characterized in that: before vertically-displacable, block the last cylindrical shape that connects of jack (8) and move back ground tackle (5), cylindrical shape is moved back the connector (6) of lower end for linking to each other with the jack piston top of ground tackle, is processed with the interior ring platform that matches with anchor ring (1) on its upper end end face.

2, supporting anchor cable anchor restorer under the mine according to claim 1 is characterized in that: the tube that moves back ground tackle (5) in cylindrical shape is provided with cone-shaped clip stripper sleeve (7) in the chamber.

3, supporting anchor cable anchor restorer under the mine according to claim 1 is characterized in that: the lower end connector (6) that cylindrical shape is moved back ground tackle (5) links to each other by blocking jack (8) top land before engage thread and the vertically-displacable.

4, supporting anchor cable anchor restorer under the mine according to claim 1 is characterized in that: the lower end connector (6) that cylindrical shape is moved back ground tackle (5) links to each other by blocking jack (8) top land before snap fit and the vertically-displacable.

5, supporting anchor cable anchor restorer under the mine according to claim 2 is characterized in that: the cone-shaped clip stripper sleeve (7) that is provided with in moving back the tube chamber of ground tackle (5) is two lobe formula structures.