CN210343395U

CN210343395U - Special mining ultrahigh-strength anchor rod

Info

Publication number: CN210343395U
Application number: CN201921061470.3U
Authority: CN
Inventors: 张立强; 刘伟强
Original assignee: Shaanxi Aobang Mining Equipment Technology Co Ltd
Current assignee: Shaanxi Aobang Mining Equipment Technology Co Ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-04-17
Anticipated expiration: 2029-07-08

Abstract

The utility model provides a purpose-built mining super high strength stock relates to the technical field of colliery supporting equipment. The sleeve comprises a cylindrical sleeve, through holes which are arranged on two end walls of the sleeve in a penetrating mode along the direction parallel to the axial diameter of the sleeve, connecting pieces which are detachably connected with the sleeve and penetrate through steel strands arranged in the through holes, and a plurality of blocking blocks fixedly connected to the hole wall of the through holes, wherein each blocking block inclines towards one side close to the axis of the sleeve close to the end wall of the sleeve, the blocking blocks incline towards the direction close to the inclined end of one end of the axial diameter of the sleeve in a plurality of directions, and the inner diameter of each through hole is matched with the outer diameter of each steel strand in a tolerance mode to be in transition fit. The utility model discloses have can be with the more firm beneficial effect of steel strand wires and sleeve pipe fixed.

Description

Special mining ultrahigh-strength anchor rod

Technical Field

The utility model belongs to the technical field of the technique of colliery supporting equipment and specifically relates to a purpose-built mining super high strength stock is related to.

Background

Coal mines are usually buried at the bottom of a rock stratum, and when the coal mines are mined, firstly, a roadway needs to be dug so that mining equipment and operators can enter a working area from the roadway. Along with the increase of the mining depth, the pressure that the tunnel roof bore increases gradually, leads to the stone of tunnel inner wall to drop easily or even the collapse appears, consequently needs to set up the supporting equipment to the tunnel inner wall to the bearing capacity of reinforcing tunnel to the stratum. When supporting equipment is additionally arranged, one end of each steel strand sequentially penetrates through the tray and the corresponding protective net and then is fixed in a roadway through the anchoring agent, and the steel strands and the anchorage device are connected to form an anchor rod to fix the tray and the protective net.

Chinese patent No. CN200971586Y discloses an expanding cone anchor, which mainly comprises an annular sleeve and a cone sleeve, wherein the annular sleeve is a right cylinder and has a circular hole with the same upper and lower diameters in the middle, the hole wall is smooth, a cone sleeve separated from the annular sleeve is arranged, the cone sleeve is conical and has a circular hole with the same upper and lower diameters in the middle, the inner and outer walls of the cone sleeve are smooth, and the diameter of the circular end surface at the bottom of the cone sleeve is 2-10mm smaller than the diameter of the inner hole of the annular sleeve. When the taper sleeve is used, the end of the steel strand is inserted into the annular sleeve, so that the end of the steel strand extends out of the hole of the annular sleeve, the taper sleeve is sleeved into the end of the center line of the steel strand from the thin end, and then the end of the steel strand is withdrawn and tensioned.

The above prior art solutions have the following drawbacks: because the inner wall and the outer wall of the conical sleeve are smooth, the friction force between the steel strand and the inner wall and the outer wall of the conical sleeve is small, so that the steel strand is easy to slide relative to the conical sleeve, the steel strand is loosened from the conical sleeve, and the fastening effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a purpose-built mining super high strength stock, it has can be with the more firm effect of steel strand wires and sleeve pipe fixed.

The above object of the present invention can be achieved by the following technical solutions:

a purpose-made mining ultra-high strength anchor rod comprises a cylindrical sleeve, through holes penetrating through two end walls of the sleeve along the direction parallel to the axis of the sleeve, a connecting piece detachably connected with the sleeve, steel strands penetrating through the through holes, and a plurality of blocking blocks fixedly connected to the wall of the through holes, wherein each blocking block inclines towards one side close to the axis of the sleeve and close to the end wall of the sleeve, the inclining directions of the blocking blocks towards one end close to the axial diameter of the sleeve are the same, and tolerance fit between the inner diameter of the through hole and the outer diameter of the steel strands is transition fit.

By adopting the technical scheme, when the anchor rod is produced, firstly, the steel strand is rotationally extruded into the through hole on the sleeve by the extruder, when the steel strand is rotationally extruded into the through hole, the steel strand can twist the blocking block to cause the blocking block to be cracked from the inner wall of the through hole, the cracked blocking block is partially embedded into the peripheral wall of the steel strand, and is partially embedded into the inner wall of the through hole in the sleeve, and one end of the other end of the blocking block is embedded into the inner wall of the through hole in the peripheral wall of the steel strand, so that the cracked blocking block can play a role in increasing friction between the steel strand and the inner wall of the through hole, the cracked blocking block can also play a role in connecting the steel strand and the sleeve, and tolerance fit between the outer diameters of the through hole and the steel strand is transition fit. When the anchorage device is used, one end of the steel strand sequentially penetrates through the tray and the protective net and then is fixed in a roadway by using the anchoring agent, and then the tray and the protective net can be fixed by connecting the connecting piece with the sleeve. The sleeve and the steel strand can be connected more firmly after the blocking block is extruded and broken.

The utility model discloses further set up to: the blocking block is arranged in a conical shape, and the diameter of the blocking block towards one end of the shaft diameter of the sleeve is gradually reduced.

Through adopting above-mentioned technical scheme, when inserting the steel strand wires in the sleeve, move the steel strand wires to the great one end of diameter from the less one end of stop block diameter gradually along being on a parallel with sheathed tube axis direction, at this in-process steel strand wires alright drive stop block in the through-hole by the back of breaking and rotate certain angle along with the motion of steel strand wires in the through-hole, can be convenient for stop in the fragment more convenient insert steel strand wires of piece, can be with steel strand wires and sleeve fixed more firm.

The utility model discloses further set up to: the side wall of the blocking block is provided with a plurality of grooves.

Through adopting above-mentioned technical scheme, can make the piece of blockking have more edges and corners when cracked through setting up the recess, can be convenient for broken piece of blockking insert sleeve pipe and steel strand wires in, can be connected sleeve pipe and steel strand wires more firmly.

The utility model discloses further set up to: the grooves are arranged into 3 strips.

Through adopting above-mentioned technical scheme, set up the recess into 3 can avoid the strip number of recess too little and lead to stopping that the arris after the piece is broken is less and lead to inserting steel strand wires or intraductal stopper piece less, or the recess strip number too much and lead to stopping the condition emergence that the intensity of piece is less.

The utility model discloses further set up to: the steel strand wires include a plurality of heliciform and the silk body of twisting each other, each the surface of silk body is smooth setting.

Through adopting above-mentioned technical scheme, set up the steel strand wires into a plurality of silk bodies of twisting each other, can make and be formed with certain clearance between a plurality of silk bodies, can make the part not twisted up with the steel strand wires that most advanced gets into in the through-hole and cut off by the steel strand wires hinge that follow-up entering in the through-hole that blocks the piece, can make and block that the piece is more even distributes between sleeve pipe and steel strand wires, can be convenient for insert the steel strand wires in the through-hole, also can be more firm with steel strand wires and bushing.

The utility model discloses further set up to: and the wall of the through hole is provided with anti-skid grains.

Through adopting above-mentioned technical scheme, can increase the frictional force between steel strand wires and the through-hole, can make the connection between steel strand wires and the sleeve pipe more firm.

The utility model discloses further set up to: still include AB glue, AB glue is including scribbling this glue of locating stopper periphery and sleeve pipe inner wall, and scribble and locate steel strand wires with the sclerosing agent of the corresponding one end periphery of through-hole.

Through adopting above-mentioned technical scheme, when going into the sleeve with steel strand wires rotary extrusion, the hardener fuses each other with this glue, and alright fix steel strand wires and stopper and the through-hole inner wall in the sleeve pipe after five minutes, can be fixed more firmly with sleeve pipe and steel strand wires.

The utility model discloses further set up to: the sleeve is in threaded connection with the connecting piece.

Through adopting above-mentioned technical scheme, when passing tray and protection network in proper order with anchor joint rigid coupling in the tunnel with steel strand wires one end, with connecting piece and sleeve pipe threaded connection, alright make sleeve pipe, connecting piece and steel strand wires constitute the stock, alright be fixed in between stock and the tunnel inner wall with tray and protection network, this kind of connected mode easy operation.

To sum up, the utility model discloses a beneficial technological effect does:

1. the blocking block is arranged on the inner wall of the through hole, so that the blocking block plays a role in connecting the inner wall of the through hole and the steel strand after being crushed and has a function of increasing friction, and the steel strand can be more firmly connected with the sleeve;

2. the blocking block which can be broken conveniently by arranging the groove is inserted into the sleeve and the steel strand, so that the sleeve and the steel strand can be connected more firmly;

3. through setting up the steel strand wires into a plurality of silk bodies of twisting each other, can make the piece of stopping cracked more even in the through-hole, can make the steel strand wires more firm with being connected of sleeve pipe.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the casing structure of the present invention, which is intended to show the state before the stopper inside the casing is not crushed by reaming.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of the structure of the connector of the present invention.

In the figure, 1, a sleeve; 11. a through hole; 12. an external thread; 2. a connecting member; 21. a cylinder; 211. connecting holes; 212. an internal thread; 22. a flange seat; 3. steel strand wires; 31. a filament body; 4. a blocking block; 41. a groove; 5. a protective net; 51. a tray.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a purpose-built mining super high strength stock, including cylindric sleeve pipe 1, run through the through-hole 11 of seting up in sleeve pipe 1 both ends wall along the axis direction that is on a parallel with sleeve pipe 1, can dismantle the connecting piece 2 of being connected with sleeve pipe 1, pass the steel strand wires 3 that through-hole 11 set up, the rigid coupling blocks 4 in a plurality of through-hole 11 pore walls, and AB glue (not shown in the figure), tolerance cooperation between 11 internal diameters of through-hole and the 3 external diameters of steel strand wires is transition fit, and anti-skidding line (not shown in the figure) has been seted up to the pore wall of.

Referring to fig. 1, the steel strand 3 includes a plurality of spiral and twisted filaments 31, the surface of each filament 31 is smooth, the number of the filaments 31 in this embodiment is 7, the filaments 31 are arranged in a manner that 1 filament 31 is arranged in the middle, and the remaining 6 filaments 31 are uniformly distributed on the periphery of the filament 31 in the middle.

Referring to fig. 1 and 2, the AB glue includes the original glue coated on the periphery of the stopper 4 and the inner wall of the casing 1, and the hardening agent coated on the periphery of the steel strand 3 corresponding to the through hole 11, in this embodiment, the material of the a glue is epoxy resin, and the material of the B glue is modified ammonium.

Referring to fig. 2 and 3, in the present embodiment, a plurality of rows of the blocking pieces 4 are uniformly distributed along the inner wall of the casing 1, and a plurality of blocking pieces 4 are arranged in each row; each blocks piece 4 and all is close to the slope of sleeve 1 end wall towards the one side that is close to the sleeve 1 axis, and a plurality of blocks 4 orientation and is close the incline direction the same of 1 footpath one end of sleeve, the thickness that blocks piece 4 is 0.05mm, block piece 4 and be coniform setting, and block 4 diameters of 1 footpath one end of sleeve of orientation and reduce gradually, block 4 lateral walls of piece and seted up many recesses 41, recess 41 sets up to 3 in this embodiment, and 3 recesses 41 are along blocking 4 perisporium equipartitions of piece.

Referring to fig. 2 and 4, the sleeve 1 is in threaded connection with the connecting member 2, the outer circumferential wall of the sleeve 1 is provided with an external thread 12, the connecting member 2 includes a regular hexagonal prism-shaped cylinder 21, a connecting hole 211 penetrating through the two end walls of the cylinder 21 along a direction parallel to the edge of the cylinder 21, an internal thread 212 arranged on the inner wall of the connecting hole 211 and connected with the external thread 12, and a flange seat 22 fixedly connected to the outer circumferential wall of the cylinder 21.

The implementation principle of the embodiment is as follows: when the anchorage device is produced, the steel strand 3 is rotationally extruded into the through hole 11 of the sleeve 1 by an extruder, when the steel strand 3 is inserted into the sleeve 1, the steel strand 3 gradually moves from one end with a smaller diameter of the stop block 4 to one end with a larger diameter along the direction parallel to the axis of the sleeve 1, and the stop block 4 is gradually extruded and crushed and embedded into the inner wall of the through hole 11 on the sleeve 1 and the peripheral wall of the steel strand 3 in the process.

When the stock is installed, offer the drilling at the tunnel inner wall, and to installation anchor agent in the drilling, press close to tunnel inner wall with protection network 5 and place, press close to protection network 5 with tray 51 again and place, after placing tray 51 and protection network 5, insert in the drilling and make sleeve pipe 1 be located the one end that protection network 5 was kept away from to tray 51 after passing tray 51 and protection network 5 in proper order with steel strand wires 3, later with 2 threaded connection of connecting piece in sleeve pipe 1 periphery and make flange seat 22's end wall and tray 51 keep away from one end wall conflict of protection network 5 can.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A purpose-made mining ultra-high strength stock which is characterized in that: including cylindric sleeve pipe (1), along being on a parallel with the axis direction of sleeve pipe (1) runs through set up in through-hole (11) of sleeve pipe (1) both ends wall, with connecting piece (2) that connection can be dismantled in sleeve pipe (1) pass steel strand wires (3) that through-hole (11) set up, and the rigid coupling in a plurality of blocks piece (4) of through-hole (11) pore wall, each block that piece (4) all are close to sleeve pipe (1) end wall slope towards one side that is close sleeve pipe (1) axis, and a plurality of block that piece (4) orientation is close the incline direction of sleeve pipe (1) shaft diameter one end is the same, through-hole (11) internal diameter with tolerance cooperation between steel strand wires (3) external diameter is transition fit.

2. A special mining ultra-high strength anchor rod according to claim 1, characterized in that: the blocking block (4) is arranged in a conical shape, and the diameter of the blocking block (4) towards one end of the shaft diameter of the sleeve (1) is gradually reduced.

3. A special mining ultra-high strength anchor rod according to claim 2, characterized in that: the side wall of the blocking block (4) is provided with a plurality of grooves (41).

4. A special mining ultra-high strength anchor rod according to claim 3, characterized in that: the grooves (41) are arranged into 3 strips.

5. A purpose-made mining ultra-high strength anchor rod according to claim 4, characterized in that: the steel strand (3) comprises a plurality of spiral and mutually hinged filament bodies (31), and the surface of each filament body (31) is smoothly arranged.

6. A purpose-made mining ultra-high strength anchor rod according to claim 5, characterized in that: the hole wall of the through hole (11) is provided with anti-skid grains.

7. A purpose-made mining ultra-high strength anchor rod according to claim 6, characterized in that: still include AB glue, AB glue is including scribbling this glue of locating stopper (4) periphery and sleeve pipe (1) inner wall and scribbling and locate steel strand wires (3) with the hardening agent of the corresponding one section periphery of through-hole (11).

8. A purpose-made mining ultra-high strength anchor rod according to claim 7, characterized in that: the sleeve (1) is in threaded connection with the connecting piece (2).