CN2138192Y

CN2138192Y - Flexible anchor pin with expansible shell

Info

Publication number: CN2138192Y
Application number: CN 92210837
Authority: CN
Inventors: 于凯
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-05-08
Filing date: 1992-05-08
Publication date: 1993-07-14
Anticipated expiration: 2002-05-08

Abstract

The utility model belongs to a support for mine tunnels, particularly relating to a flexible anchoring bolt with an expansible shell and a mechanical end head used for supporting mine tunnels. The flexible anchoring bolt with an expansible shell used for mine tunnels is composed of a wedge body (1), a frustum body (2), a shell body (3), a bolt body (4), a rope body (5) and a shim plate (6). The expansible shell of the anchoring bolt is composed of an outer frustum body and the shell body with an inner hole forming a frustum shape. The shell body is provided with six expansion seams and two breaking slots for reducing installing resistance and enhancing anchoring force. The utility model has simple structure and reasonable design, design specification on supporting mine tunnels is satisfied, and the utility model is suitable for the anchor-spray support of anchoring bolts in various rocks.

Description

Flexible anchor pin with expansible shell

The utility model belongs to the roadway supporting, the flexible shell mechanical type end anchorage bolt support of expanding of particularly a kind of roadway.

Roadway has down wedge-type with the rigidity supporting, the resin formula, anchor pole and shed shoring forms such as cement-roll formula, in use in various degree exist the anchored force instability, deficiency such as the cost height is installed difficulty, the yield supporting difference and influencing used and kept the safety in production.

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, provides a kind of roadway the flexible shell anchor pole that expands, and it is big to have anchored force, cost is low, and is applied widely, easy for installation, have and increase resistance displacement yield supporting characteristic and be applicable to that more roadway uses, the product of favourable safety in production.

The utility model is achieved in that the bloated shell of the flexible shell anchor pole that expands of roadway usefulness by being made up of cylindrical housings and another part cone table of taper type endoporus and tail cone stage body, and the tapering in cone table and housing taper type hole is between 1:3-1:30.Housing top has 4 vertical expansion joint (E.J.)s and two circumferential snap slots of 90 ° each other, and 2 vertical expansion joint (E.J.)s are split in the bottom.The cone table of bloated shell connects with the body of rod with holes with the rope body, and body of rod aperture is between 3-30mm.

This mechanism formula end anchorage anchor pole is to produce anchored force by the bloated shell of the ramp effect swelling of cone table and housing by frictional resistance with external force, expansion joint (E.J.) on the housing and snap slot be distending and vertically fracture or be out of shape laterally, play and reduce to install resistance, improve the effect of boring utilization rate and increase anchored force, when screwing nut or surrouding rock deformation, the body of rod and rope sports association connect cone table and move in housing, housing pressure increases thereupon and a certain amount of compressive strain takes place, what produce that frictional resistance strengthens along with the increase of cone table displacement increases the resistance placement property, and this specific character helps yield supporting.

Fig. 1 shows the flexible shell anchor structure figure of expanding of roadway.

Fig. 2 shows the flexible shell anchor pole cone table structure chart that expands of roadway.

Fig. 3 shows the flexible shell anchor pole shell structure figure of expanding of roadway.

Fig. 4 shows the flexible shell anchor rod body structure chart that expands of roadway.

Among the figure, the 1-wedge; The 2-cone table; The 3-housing; The 4-body of rod; The 5-body of restricting; The 6-backing plate; The 7-snap slot; 8-frustum hole; The 9-expansion joint (E.J.); 10-tail cone stage body

Describe with by way of example below in conjunction with accompanying drawing.

Roadway uses preceding rope body (5) one ends to penetrate the body of rod (4) mesopore with the flexible shell anchor pole that expands and together flattens, and the other end penetrates cone table (2) wedged hole, uses the urgent connection of wedge (1).When roadway is installed with the flexible shell anchor pole that expands, at first remove foreign matters such as coal, cash, dust in the boring, then housing (3) is penetrated rope body (5) and forms the shell that expands with cone table (2) from the body of rod (4) end, after (5) penetrate ground tackle the body of rod (4) and rope body, gently bloated shell is sent into the boring end with ground tackle, utilize pneumatic pick after smashing tightly by hand, the impact force of sledgehammer or axe is further smash tightly, last upper padding plate (6) lacks section with the circle that spanner screws the body of rod (4), screws nut to the regulation anchored force with another spanner.

Roadway uses single shell that expands can reach the F=39.2KN anchored force of design specifications regulation with the flexible shell anchor pole that expands, available anchor net, and the anchor supporting plate, anchor beam, supportings such as anchor spray also can increase anchored force by increasing measures such as housing use amount.

The utility model has following characteristics:

1, anchor force is big and the resistance of increasing placement property is arranged, and uses single swollen shell just can satisfy the design of shaft and entry requirement, has to increase to hinder placement property and be more suitable for roadway yield supporting needs.

2, shorten the set-up time, this rockbolt installation time is 40 seconds, is 5%～50% of other rockbolt installation time.

3, applied widely, be applicable to installing and using of various lithology of roadway and different-diameter boring.

Roadway is with the flexible shell anchor pole that expands, and is simple in structure, reasonable in design, satisfy the shaft and drift supporting design specifications, can utilize regenerated plastics, waste and old steel cable, bar dowel is made, can be used for anchor net, anchor beam, anchor supporting plate, multiple support forms such as anchor spray, also can be used for weight hangs, firmware bases etc. are easy to make and promote the use of, and help the development of roadway anchor pole anchor spray work.

Claims

1, the flexible shell anchor pole that expands of a kind of roadway of forming by wedge (1), cone table (2), housing (3), the body of rod (4), rope body (5), backing plate (6), it is characterized in that the said anchor pole shell that expands is made up of cylindrical housings (3) that taper type hole and tail cone stage body are arranged and cone table (2), the tapering of housing taper type hole and cone table is 1: 3-1: between 30, housing top has four vertical expansion joint (E.J.)s and two snap slots that radially distribute of 90 degree each other, and two vertical expansion joint (E.J.)s are split in the bottom;

2, it is characterized in that with the flexible shell anchor pole that expands the said body of rod with holes (4) connects with wedge with the cone table that the wedge shape endoporus is arranged (2) with rope body (5) by the described roadway of claim 1, the aperture of the body of rod with holes (5) is between 3-30mm;

3, by the flexible shell anchor pole that expands of the described roadway of claim 1, can be used for single anchor supporting, also can be used for the anchor net, anchor beam, bolt-spary supports also can be used for hanging weight and firmware basis.