CN204299597U

CN204299597U - The self-expanding anchor pole of rotation

Info

Publication number: CN204299597U
Application number: CN201420678008.9U
Authority: CN
Inventors: 罗宗帆; 王梦恕; 谭忠盛; 张卿; 吴应明; 冯军武
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-13
Filing date: 2014-11-13
Publication date: 2015-04-29
Anticipated expiration: 2024-11-13

Abstract

The utility model relates to a kind of self-expanding anchor pole of rotation of tunnel construction, there is the elongated rod shape anchorage head being provided with injected hole in, the top attaching of anchorage head has alloy bit, the bar shaped square hole of an in-built elasticity from swollen voussoir is offered in the anchorage head body of rod, this elasticity comprises one from swollen voussoir and is fixed on reverse V-shaped spring on the anchorage head body of rod and two the symmetrical wedge being attached to reverse V-shaped spring outer respectively, between two wedge afterbodys, be welded with one section after reverse V-shaped spring pressing being drawn at ordinary times and connect steel wire, two wedges are closed up to be closed in the bar shaped square hole of the anchorage head body of rod, after connection steel wire disconnects, reverse V-shaped spring afterbody two ends are automatically opened and are made the afterbody of two wedges stretch out outside the anchorage head body of rod, the internal thread that be connected supporting with anchor bar body is provided with at the afterbody of anchorage head.Rational in infrastructure, easy construction of the present utility model, quick, anchoring strength and supporting effect are good, can keep integrality and the stability of country rock to greatest extent.

Description

The self-expanding anchor pole of rotation

Technical field

The utility model belongs to rock (soil) body engineering construction equipment technical field, relates to a kind of self-expanding anchor pole of rotation of tunnel construction.

Background technology

Anchor rod anchored is a kind of in the earth formation by reinforcing mode that works and stratum are tightly chained together by anchor pole, the pulling force of the shearing strength transferring structure thing of anchor pole and surrounding formation is relied in work, stratum self is reinforced, reaches the object of holding structure thing and Rock Slide Stability.

At present, in tunnel construction, anchor rod anchored mode mainly contains end anchorage and total length bond-anchorage two kinds.End anchorage Problems existing is: because anchor axial force is very large, requires high to rod body material intensity and section, therefore fails to give full play to the mechanical function of anchor rod body.Total length bond-anchorage is how relevant with the frictional force size that slip casting plumpness, grout curing rear paste materials intensity produce, but slurries are often difficult to control to rock (soil) body void diffusion situation in slip casting process, the situations such as blocking are caused to happen occasionally, furthermore the construction process requirement of bolt grouting is high, difficulty of construction is large, so also have influence on anchor rod anchored effect to a great extent play and even affect construction speed, and the construction period of total length bond-anchorage is long, there is larger impact to the construction quality of whole Tunnel Engineering and progress.

Utility model content

The purpose of this utility model is to solve prior art Problems existing, provides a kind of rational in infrastructure, easy construction, the self-expanding anchor pole of rotation that quick, efficiency is high, anchoring strength is good.

For achieving the above object and adopt technical scheme be such: the self-expanding anchor pole of the rotation provided has the elongated rod shape steel anchorage head being provided with injected hole in, an alloy bit is had by the attaching of male and female screw thread at the top of anchorage head, a bar shaped square hole is offered at the middle part of the anchorage head body of rod, in bar shaped square hole, one secondary elasticity is installed from swollen voussoir by pin, described elasticity comprises one from swollen voussoir and is fixed on reverse V-shaped spring on the anchorage head body of rod and two the symmetrical cast iron quality wedge being attached to reverse V-shaped spring outer respectively by spring steady pin, (namely anchorage head is not before squeezing into country rock for construction) is welded with one section of connection steel wire after reverse V-shaped spring pressing being drawn between two wedge afterbodys at ordinary times, two wedges are closed up to be closed in the bar shaped square hole of the anchorage head body of rod, after connection steel wire disconnects, reverse V-shaped spring afterbody two ends are automatically opened and are made the afterbody of two wedges stretch out outside the anchorage head body of rod, the afterbody of anchorage head is provided with the internal thread that be connected supporting with anchor bar body.

The technical solution adopted in the utility model also comprises: be the internal thread that can be connected with Φ 25mm or Φ 32mm type standard anchor rod-matched at the aft mounted internal thread of anchorage head.

The important feature of the utility model project organization has alloy bit in the attaching of anchorage head top and on the anchorage head body of rod, is provided with elasticity from swollen voussoir, and elasticity is provided with from swollen wedge and draws the used time reverse V-shaped spring that can open to both sides at ordinary times.During practice of construction, constructor utilizes anchor bar body termination alloy bit to rotate chip rock mass, and anchor pole is squeezed into country rock, and anchor pole is being squeezed in rock mass process, and wedge is limited by and connects iron wire effect and close always; Until anchor pole after delivering to the end, ambroin pipe is passed in injected hole, and the earth terminal of electric welding machine is connected anchor bar body outer wall, another terminals touch on the connection iron wire of wedge by ambroin pipe, open electric welding machine afterwards, utilize high-voltage arc to blow connection iron wire, make two wedges automatic spreading under the action of the spring, and be mounted on hole wall rock, play anchor rod anchored effect; Reinforce by injected hole after completing anchoring or do not need to carry out the anchorage effect that bolt grouting work progress can reach design again.

Compared with prior art, the structural design of the self-expanding anchor pole of rotation described in the utility model is unique, air pressure gun can be utilized directly to creep into, and can with standard hollow anchor pole (Φ 25mm, Φ 32mm type etc.) supportingly to use together, both slip casting slip casting use can also can be exempted from, anchor pole solid and reliable, construction technology simple and fast, can deformation controlling for rock surrounding gateways effectively, the development in displacement and crack, significantly improve tunnel height low stress, keep the integrality of Tunnel Engineering country rock to greatest extent, stability, and there is transport easy construction, construction speed is fast, efficiency is high, construction cost is low, the advantages such as supporting effect is good, product can be widely used in railway, water power, highway, the aspects such as the roadway engineerings such as colliery and roadbed side slope protection, there is high social economic value.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model specific embodiment.

Fig. 2 is the side view of Fig. 1, and figure Elastic is the non-flaring state of shrinking from swollen wedge.

Fig. 3 is the structural representation that the utility model creeps into rear anchoring status, and figure Elastic is open configuration from swollen wedge.

In accompanying drawing, the title of each number designation respectively: 1-alloy bit, 2-male and female screw thread, 3-anchorage head, 4-wedge, 5-wedge steady pin, 6-spring steady pin, the reverse V-shaped spring of 7-, 8-bar shaped square hole, 9-connects iron wire, 10-injected hole, 11-internal thread.

Detailed description of the invention

Below with reference to accompanying drawing, the utility model content is described further, but the present embodiment is exemplary, only for explaining the present invention, instead of limitation of the present invention.

See accompanying drawing, the self-expanding anchor pole of rotation described in the utility model comprises an elongated rod shape steel anchorage head 3, is provided with injected hole 10 in anchorage head 3, and the top of anchorage head 3 is spliced by male and female screw thread 2 and alloy bit 1.Offer bar shaped square hole 8 at the middle part of anchorage head 3 body of rod, in bar shaped square hole 8, a secondary elasticity is installed from swollen voussoir by wedge steady pin 5.Elasticity is comprised one from swollen voussoir and to be fixed on reverse V-shaped spring 7 on anchorage head 3 body of rod and two the symmetrical cast iron quality wedge 4 being attached to reverse V-shaped spring 7 outer respectively by spring steady pin 6.(before namely anchorage head squeezes into country rock) is welded one section after reverse V-shaped spring 7 both wings pressure being held together and is connected steel wire 9 between two wedge 4 afterbodys at ordinary times, in the bar shaped square hole 8 two wedge 4 entirety being closed up close at anchorage head 3 body of rod (Fig. 2); After being blown by the connection steel wire 9 be connected between two wedges 4 by high-voltage arc in the course of work, reverse V-shaped spring 7 afterbody two ends are automatically opened and are made the afterbody of two wedges 4 stretch out anchorage head 3 body of rod outer (Fig. 3).The afterbody of anchorage head 1 is provided with the internal thread 11 that be connected supporting with anchor bar body, is the afterbody of anchorage head 3 can be made to be connected with Φ 25mm or Φ 32mm type standard anchor rod-matched use by internal thread 11.

During practice of construction, first anchor bar body termination alloy bit 1 is utilized to rotate chip rock mass, anchor pole is squeezed into country rock, anchor pole is being squeezed in rock mass process, wedge 4 in anchorage head 3 closes in bar shaped square hole 8 by connecting iron wire 9 all the time, anchor pole is after delivering to the end, ambroin pipe is passed in injected hole 10, and the earth terminal of electric welding machine is connected anchor bar body outer wall, another terminals touch on the connection iron wire 9 of wedge 4 by ambroin pipe, then electric welding machine is opened, utilize high-voltage arc to blow and connect iron wire 9, wedge 4 is made automatically to open under reverse V-shaped spring 7 acts on and be mounted on hole wall rock, play anchor rod anchored effect, reinforce by injected hole after completing anchoring or do not need to carry out the anchorage effect that bolt grouting work progress can reach design again.

Claims

1. the self-expanding anchor pole of rotation, it is characterized in that: there is in one the elongated rod shape steel anchorage head (3) being provided with injected hole (10), an alloy bit (1) is had by male and female screw thread (2) attaching at the top of anchorage head (3), a bar shaped square hole (8) is offered at the middle part of anchorage head (3) body of rod, in bar shaped square hole (8), one secondary elasticity is installed from swollen voussoir by pin, described elasticity from swollen voussoir comprise one by spring steady pin (6) be fixed on reverse V-shaped spring (7) on anchorage head (3) body of rod and two respectively symmetry be attached to the cast iron quality wedge (4) of reverse V-shaped spring (7) outer, between two wedge (4) afterbodys, be welded with one section after reverse V-shaped spring (7) pressing being drawn at ordinary times and connect steel wire (9), two wedges (4) are closed up to close in the bar shaped square hole (8) of anchorage head (3) body of rod, after connection steel wire (9) disconnects, reverse V-shaped spring (7) afterbody two ends are automatically opened and are made the afterbody of two wedges (4) stretch out outside anchorage head (3) body of rod, the afterbody of anchorage head (1) is provided with the internal thread (11) that be connected supporting with anchor bar body.

2. the self-expanding anchor pole of rotation according to claim 1, is characterized in that: be the internal thread that can be connected with Φ 25mm or Φ 32mm type standard anchor rod-matched at the aft mounted internal thread (11) of anchorage head (3).