CN204082188U - A kind of extruding, friction-type energy-absorption anchor rod - Google Patents

A kind of extruding, friction-type energy-absorption anchor rod Download PDF

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Publication number
CN204082188U
CN204082188U CN201420542234.4U CN201420542234U CN204082188U CN 204082188 U CN204082188 U CN 204082188U CN 201420542234 U CN201420542234 U CN 201420542234U CN 204082188 U CN204082188 U CN 204082188U
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CN
China
Prior art keywords
sleeve
energy
anchor
anchor rod
friction
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420542234.4U
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Chinese (zh)
Inventor
潘一山
孟村影
曾祥华
王爱文
李忠华
李国臻
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Liaoning Technical University
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Liaoning Technical University
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Priority to CN201420542234.4U priority Critical patent/CN204082188U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The open a kind of extruding of the utility model, friction-type energy-absorption anchor rod, comprise anchor bar body and sleeve, arrange energy-absorbing lining pipe in sleeve, the end of described sleeve is fixedly connected with end card, and head end is fixedly connected with the anti-nut that spouts; Described anchor bar body head end is placed in the sleeve outside energy-absorbing lining pipe, end is placed in outside end card through energy-absorbing lining pipe, end successively, described extruding, friction-type energy-absorption anchor rod also comprise pre-load nut and anchor rod pallet board, solve existing telescopic Extendable anchor rod low bearing capacity, constant-resistance and the unbalanced problem of large deformation function, meet the feature of roadway surrounding rock large deformation, a kind ofly have compared with high-bearing capacity, structure, safe and reliable constant-resistance energy-absorption anchor rod, structure is simple, safe and reliable, assembling easily, with low cost, simple operation.

Description

A kind of extruding, friction-type energy-absorption anchor rod
Technical field
The invention belongs to safety support technical field in the underground constructions such as mine engineering, Hydraulic and Hydro-Power Engineering, construction of tunnel, relate to a kind of supporting and protection structure of large deformation coal and rock, particularly relate to a kind of extruding, friction-type energy-absorption anchor rod.
Background technology
In the engineering support processes such as mine engineering, Hydraulic and Hydro-Power Engineering, construction of tunnel, anchor pole is widely used a kind of support equipment; Along with continuous increase and the large-scale underground engineering construction of mining depth, the geological conditions faced becomes increasingly complex, and roadway surrounding rock usually shows feature that is heavily stressed, large deformation, and conventional anchor elongation per unit length is low, is difficult to be suitable in the surrounding rock supporting of large deformation; When moderate finite deformation appears in country rock, once the deformation energy of roadway surrounding rock exceedes the scope that anchor pole can bear, the support equipments such as anchor pole will be caused to lose efficacy, and then serious threat is caused to personal security and production safety.
In view of the defect of conventional anchor in large deformation surrounding rock supporting system, successively have developed the multiple rock bolt being applicable to country rock large deformation and reinforcing both at home and abroad; Existing anchor pole still has many defects, the Chinese patent being 201120066745.X as application number discloses a kind of friction sleeve cartridge type energy-absorption anchor rod, friction teeth is covered with in sleeve, friction teeth in cylindricality friction piece friction sleeve, thus reach the effect absorbing surrouding rock deformation energy, but this mode is unfavorable for realizing constant-resistance and there is the problems such as processing difficulties; Application number be 201020632589.4 Chinese patent a kind of Extendable anchor rod is disclosed, tube is by increasing the frictional force transmitting force between resistance pipe, after frictional force reaches certain value, tube and increasing hinder between pipe and slide, and reach the object that body of rod active section extends, but there is the short problem of active section; Patent publication No. is the Chinese patent of CN1544798A, discloses a kind of expansion sleeve bolt, this prestressed anchor and the effective contact area of drill hole inner wall little, tie is easily pulled off, and cause the prestressing force that can apply little, swollen shell intermediate plate easily comes off; A kind of extra long anchor bar disclosed in patent No. 201835847U, at least one connecting portion is provided with between anchor head and anchor tail, anchor head is connected with anchor tail, this anchor pole can control deep wall rock and is out of shape and efficiently solves the problem that can not use long anchor pole due to insufficient spaces such as tunnels, but anchor pole entirety belongs to rigidity does not possess energy-absorbing function, regulate deflection limited for roadway with large deformation, can not large deformation be allowed.
Summary of the invention
For prior art Problems existing, the invention provides a kind of extruding, friction-type energy-absorption anchor rod, to solve existing telescopic Extendable anchor rod low bearing capacity, constant-resistance and the unbalanced problem of large deformation function, meeting the feature of roadway surrounding rock large deformation, is a kind ofly to have compared with high-bearing capacity, structure, safe and reliable constant-resistance energy-absorption anchor rod.
To achieve these goals, the present invention adopts following technical scheme, a kind of extruding, friction-type energy-absorption anchor rod, and comprise anchor bar body and sleeve, arrange energy-absorbing lining pipe in sleeve, the end of described sleeve is fixedly connected with end card, and head end is fixedly connected with the anti-nut that spouts; Described anchor bar body head end is placed in the sleeve outside energy-absorbing lining pipe, end is placed in outside end card through energy-absorbing lining pipe, end successively, described extruding, friction-type energy-absorption anchor rod also comprise pre-load nut and anchor rod pallet board, described anchor rod pallet board is sleeved on sleeve head end portion, and it is outer with the anti-sleeve spouted between nut and be connected with bush whorl that pre-load nut is arranged on anchor rod pallet board.
A kind of extruding, friction-type energy-absorption anchor rod, comprise anchor bar body and sleeve, arrange energy-absorbing lining pipe in sleeve, the end of described sleeve is fixedly connected with end card, and head end is fixedly connected with the anti-nut that spouts; Described anchor bar body head end is placed in the sleeve outside energy-absorbing lining pipe, end is placed in outside end card through energy-absorbing lining pipe, end successively, described extruding, friction-type energy-absorption anchor rod also comprise pre-load nut and anchor rod pallet board, described anchor rod pallet board is sleeved on the terminal part of anchor bar body, and it is outer and be threaded with anchor bar body that pre-load nut is arranged on anchor bar body between anchor rod pallet board and the terminal part of anchor bar body.
Preferably, described anti-nut center of spouting has through hole.
Further preferably, the head end of described anchor bar body is provided with friction pylon, and the anchor bar body between friction pylon and energy-absorbing lining pipe is provided with wedge shape pylon.
Further preferably, described energy-absorbing lining pipe is polygon lining pipe or circle lining pipe.
Further preferably, described sleeve is cylindrical inner polygon sleeve or cylindrical inner circle lining pipe.
Further preferably, the internal diameter of described end card is less than the internal diameter of sleeve, is greater than or equal to the external diameter of anchor bar body.
Beneficial effect of the present invention: the processing and fabricating of sleeve of the present invention, energy-absorbing lining pipe, anchor bar body, wedge shape platform and friction pylon is simple, each parts are unified to be coordinated; The present invention is adapted to workings subject to dy namic pressure deformation failure feature, and can constant-resistance be kept automatically to extend when country rock generation large deformation, anchor pole of the present invention still has good support action in the process, have higher bearing capacity, structure is simple, safe and reliable, assembling is easily, with low cost, simple operation.
Accompanying drawing explanation
Fig. 1 is the extruding of the present invention's one, friction-type energy-absorption anchor rod embodiment 1 structural representation;
Fig. 2 is the extruding of the present invention's one, friction-type energy-absorption anchor rod embodiment 2 structural representation;
Fig. 3 is the A-A sectional view of Fig. 1 after removal anchor pole;
Fig. 4 is the a-a sectional view of Fig. 2 after removal anchor pole;
In figure, the anti-nut that spouts of 1-, 2-pre-load nut, 3-anchor rod pallet board, 4-anchor bar body, 5-energy-absorbing lining pipe, 6-sleeve, 7-end card, 8-wedge shape pylon, 9-rubs pylon.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Embodiment 1, as shown in Figure 1, a kind of extruding, friction-type energy-absorption anchor rod, comprise anchor bar body 4 and sleeve 6, arrange energy-absorbing lining pipe 5 in sleeve 6, the end of described sleeve 6 is fixedly connected with end card 7, and head end is fixedly connected with the anti-nut 1 that spouts; Described anchor bar body 4 head end is placed in the sleeve 6 outside energy-absorbing lining pipe 5, end is placed in outside end card 7 through energy-absorbing lining pipe 5, end card 7 successively, described extruding, friction-type energy-absorption anchor rod also comprise pre-load nut 2 and anchor rod pallet board 3, described anchor rod pallet board 3 is sleeved on sleeve 6 head end portion, pre-load nut 2 is arranged on anchor rod pallet board 3 and anti-spouts between nut 1, is placed in sleeve 6 outer and be threaded with sleeve 6; As shown in Figure 3, described sleeve 6 is round buss in cylindrical, and as shown in Figure 3, described energy-absorbing lining pipe 5 is hexagon lining pipe.Anti-nut 1 Main Function that spouts is the stability keeping sleeve 6 end, and can prevent from anchor bar body termination in Fig. 1 from rupturing instantaneously bursting out the potential safety hazard that sleeve causes, anti-nut 1 center of spouting has through hole, to keep barrel inner and outer air pressure consistent; Pre-load nut 2 and sleeve 6 are threaded, and are fixed in country rock body by anchor rod pallet board 3 and sleeve 6; Anchor bar body 4 adopts high-strength deformed steel bar material to make, it is positioned at end design wedge shape pylon 8 and the friction pylon 9 of sleeve 6 inside, wedge shape pylon 8 is responsible for energy-absorbing lining pipe 5 to extrude becomes circular formation working resistance, and friction pylon 9 is responsible for and is extruded conglobate energy-absorbing lining pipe 5 close contact forming working resistance; Time the anchor bar body termination relative motion in sleeve 6 to barrel end, end card 7 stops it continue motion and cause structural failure, makes anchor bar body 4 or sleeve 6 that tension failure occur, and then can reach larger supporting intensity.
When Anchor Agent selects resin anchoring agent, the preferred using method of one of the present invention is:
1) according to the length of anchor bar body 4 treating to beat anchor hole in supporting rock mass, anchor hole diameter is greater than the diameter of anchor bar body 4;
2) widen anchor hole diameter and the degree of depth outside rock mass, diameter is slightly larger than sleeve outer diameter, and the degree of depth is length sleeve;
3) in the anchor hole of inner side, put into fast-set resin anchoring cartridge and slow setting anchoring cartridge successively, extruding of the present invention, friction-type energy-absorption anchor rod entirety are put into anchor hole, anchor bar body 4 inserts inner side anchor hole;
4) by roof bolting machine, anchor bar body is rotated press-in anchor hole, anchoring cartridge is squeezed and breaks and uniform stirring, is full of anchor hole, after it solidifies, applies certain pretightning force to anchor bar body, tightens the fixing outer anchored end of pre-load nut 2.
Embodiment 2, as shown in Figure 2, a kind of extruding, friction-type energy-absorption anchor rod, comprise anchor bar body 4 and sleeve 6, arrange energy-absorbing lining pipe 5 in sleeve 6, the end of described sleeve 6 is fixedly connected with end card 7, and head end is fixedly connected with the anti-nut 1 that spouts; Described anchor bar body 4 head end is placed in the sleeve 6 outside energy-absorbing lining pipe 5, end is placed in outside end card 7 through energy-absorbing lining pipe 5, end card 7 successively, described extruding, friction-type energy-absorption anchor rod also comprise pre-load nut 2 and anchor rod pallet board 3, described anchor rod pallet board 3 is sleeved on the terminal part of anchor bar body 4, outside anchor bar body 4 between the terminal part that pre-load nut 2 is arranged on anchor rod pallet board 3 and anchor bar body 4, and be threaded with anchor bar body 4; As shown in Figure 4, described sleeve 6 is hex socket in cylindrical, and described energy-absorbing lining pipe 5 is circular lining pipe.Anti-nut 1 Main Function that spouts is the stability keeping sleeve 6 end, as shown in Figure 2, prevents spouting nut 1 center without through hole, is convenient to anchoring; Pre-load nut 2 and anchor bar body 4 are threaded, and are fixed in country rock body by anchor rod pallet board 3 and anchor bar body 4; Anchor bar body 4 adopts high-strength deformed steel bar material to make, it is positioned at end design wedge shape pylon 8 and the friction pylon 9 of sleeve 6 inside, wedge shape pylon 8 is responsible for energy-absorbing lining pipe 5 to extrude formation working resistance, and friction pylon 9 is responsible for forming working resistance with energy-absorbing lining pipe 5 close contact be extruded; When in sleeve 6, anchor bar body 4 termination relative motion is to sleeve 6 end time, the structural failure that end card 7 stops it to continue motion and causes, makes anchor bar body 4 or sleeve 6 that tension failure occur, and then can reach larger supporting intensity.
When Anchor Agent selects resin anchoring agent, a kind of using method of the present invention is:
1) according to the entire length of extruding of the present invention, friction-type energy-absorption anchor rod treating to beat anchor hole in supporting rock mass, anchor hole diameter is greater than sleeve 6 diameter;
2) in anchor hole, put into fast-set resin anchoring cartridge and slow setting anchoring cartridge successively, extruding of the present invention, friction-type energy-absorption anchor rod entirety are put into anchor hole;
3) by roof bolting machine, anchor bar body 4 is rotated press-in anchor hole, anchoring cartridge is squeezed and breaks and uniform stirring, is full of anchor hole, after it solidifies, applies certain pretightning force to anchor bar body 4, tightens the fixing outer anchored end of pre-load nut 2.
When the present invention is applied in tunnel, the energy at roadway surrounding rock generation large deformation initial stage is larger, when roadway deformation can exceed the deformation energy scope that anchor pole can bear, wedge shape pylon 8 extrudes energy-absorbing lining pipe 5 and deforms, produce working resistance, friction pylon 9 under the support of sleeve 6 with energy-absorbing lining pipe 5 close contact, produce working resistance; The present invention shows the large deformation of radial drawing along with country rock large deformation.Then surrouding rock deformation can discharge and diminish, until be less than minimum working resistance when the present invention works, anchor bar body 4 and energy-absorbing lining pipe 5 stop relative motion, and tunnel is in stable state again.

Claims (7)

1. extruding, a friction-type energy-absorption anchor rod, it is characterized in that: comprise anchor bar body and sleeve, comprise anchor bar body and sleeve, arrange energy-absorbing lining pipe in sleeve, the end of described sleeve is fixedly connected with end card, and head end is fixedly connected with the anti-nut that spouts; Described anchor bar body head end is placed in the sleeve outside energy-absorbing lining pipe, end is placed in outside end card through energy-absorbing lining pipe, end successively, described extruding, friction-type energy-absorption anchor rod also comprise pre-load nut and anchor rod pallet board, described anchor rod pallet board is sleeved on sleeve head end portion, and it is outer with the anti-sleeve spouted between nut and be connected with bush whorl that pre-load nut is arranged on anchor rod pallet board.
2. extruding, a friction-type energy-absorption anchor rod, it is characterized in that: comprise anchor bar body and sleeve, arrange energy-absorbing lining pipe in sleeve, the end of described sleeve is fixedly connected with end card, and head end is fixedly connected with the anti-nut that spouts; Described anchor bar body head end is placed in the sleeve outside energy-absorbing lining pipe, end is placed in outside end card through energy-absorbing lining pipe, end successively, described extruding, friction-type energy-absorption anchor rod also comprise pre-load nut and anchor rod pallet board, described anchor rod pallet board is sleeved on the terminal part of anchor bar body, and it is outer and be threaded with anchor bar body that pre-load nut is arranged on anchor bar body between anchor rod pallet board and the terminal part of anchor bar body.
3. one extruding according to claim 1, friction-type energy-absorption anchor rod, is characterized in that: described anti-nut center of spouting has through hole.
4. the one extruding according to claims 1 or 2, friction-type energy-absorption anchor rod, is characterized in that: the head end of described anchor bar body is provided with friction pylon, and the anchor bar body between friction pylon and energy-absorbing lining pipe is provided with wedge shape pylon.
5. the one extruding according to claims 1 or 2, friction-type energy-absorption anchor rod, is characterized in that: described energy-absorbing lining pipe is polygon lining pipe or circle lining pipe.
6. the one extruding according to claims 1 or 2, friction-type energy-absorption anchor rod, is characterized in that: described sleeve is cylindrical inner polygon sleeve or cylindrical inner circle lining pipe.
7. the one extruding according to claims 1 or 2, friction-type energy-absorption anchor rod, is characterized in that: the internal diameter of described end card is less than the internal diameter of sleeve, is greater than or equal to the external diameter of anchor bar body.
CN201420542234.4U 2014-09-19 2014-09-19 A kind of extruding, friction-type energy-absorption anchor rod Expired - Fee Related CN204082188U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265339A (en) * 2014-09-19 2015-01-07 辽宁工程技术大学 Extrusion and friction type energy absorption anchor rod
CN105241656A (en) * 2015-10-30 2016-01-13 湖南科技大学 Physical simulation experiment system and method of deep-tunnel high-resistance extensible anchor pole support
CN105298526A (en) * 2015-11-30 2016-02-03 中国葛洲坝集团第三工程有限公司 Energy-absorption anchor rod for relieving danger of deeply-buried hydraulic tunnel surrounding rock burst and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265339A (en) * 2014-09-19 2015-01-07 辽宁工程技术大学 Extrusion and friction type energy absorption anchor rod
CN104265339B (en) * 2014-09-19 2016-08-24 辽宁工程技术大学 A kind of extruding, friction-type energy-absorption anchor rod
CN105241656A (en) * 2015-10-30 2016-01-13 湖南科技大学 Physical simulation experiment system and method of deep-tunnel high-resistance extensible anchor pole support
CN105241656B (en) * 2015-10-30 2017-10-27 湖南科技大学 The physical simulation experiment system and method for deep tunnel high resistant Extendable anchor rod supporting
CN105298526A (en) * 2015-11-30 2016-02-03 中国葛洲坝集团第三工程有限公司 Energy-absorption anchor rod for relieving danger of deeply-buried hydraulic tunnel surrounding rock burst and method

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EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150107

Termination date: 20150919