CN2547875Y - Cold press head equal-strength anchoring bolt - Google Patents
Cold press head equal-strength anchoring bolt Download PDFInfo
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- CN2547875Y CN2547875Y CN 01265598 CN01265598U CN2547875Y CN 2547875 Y CN2547875 Y CN 2547875Y CN 01265598 CN01265598 CN 01265598 CN 01265598 U CN01265598 U CN 01265598U CN 2547875 Y CN2547875 Y CN 2547875Y
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Abstract
The utility model relates to a supporting technology of resource exploitation of mines, particularly a cold press head equal-strength anchoring rod for supporting the anchoring rod of underground exploiting tunnels. The utility model is composed of a rod body 1 and an axial spiral rib 2 which is arranged on the rod body 1. The utility model presses (roll) a one-way spiral anchor rod end eliminating rib without a longitudinal rib into circular in a cold mode by the technology that raw material of anchor rod bodies which are rolled in a cold mode or a hot mode by a cold (roll) pressing head facility. The length of the one-way spiral anchor rod end eliminating rib without a longitudinal rib is from 70MM to 150MM. In order to satisfy a cylindrical rod body required by the pressed thread technology, the utility model is rolled with standard metric threads by the pressed thread technology. The raw material of a rod body 1 is helically rolled into integration along the rod body by a rib 2 in a hot rolling mode. A hot rolling seaming line 3 is smaller than or equal to 2MM. The diameter of the rod body is from phi 20MM to phi 22MM. The screw pitch L#-[2] is from 14 to 18MM. The height of the rib L is from 0.6MM to 1.2MM. The width L#-[1] of the rob is from 2 to 2.6MM. The rod body has good bond stress and high intensity, is capable of well enhancing transference effects of the anchoring force and the bearing capacity, etc. In such a way, the intensity of the end achieves 95% of the tensile strength of the raw material of the anchor rod body. The utility model fundamentally realizes equal-strength of the anchor rod, is capable of eliminating of the phenomenon of the stress concentration, and enhances 15 % to 25% of the integral strength of the anchor rod.
Description
Technical field:
The utility model relates to mine resources exploitation support technology, is a kind of first-class strong anchor pole of colding pressing of underground mining roadway bolt supporting that is used for.
Background technology:
It is the vertical muscle of unidirectional left-handed nothing that existing anchor pole is generally body of rod rib, obtained the better effects of supporting through many improvement, but find in practice, still there is more deficiency in existing anchor bar body: during full anchor, the well-beaten effect of anchoring agent is not good enough, the bond stress of the body of rod is poor slightly, the pitch of rib, highly, bigger than normal, the body of rod of angle, weight circle, easily make anchor pole advance that rotary resistance is big, power easily is delivered on the rib, and make anchor pole pass the anchoring agent often to reduce stirring action, cause anchored force not good enough.Simultaneously, termination 100～150mm section of existing anchor bar body must be processed as international thread, to match with the anchor pole cap.And existing termination screw thread has cold and hot two kinds of processing methods usually: 1, anchor bar body end machining section employing turning process is disappeared rib, car circle make it to become the cylindrical body of rod, to satisfy the technical requirements of subsequent processing.This operation loss anchor bar body parent material makes the body of rod diameter after the processing reduce by 1～2mm than body of rod mother metal internal diameter, the more cylindrical body of rod is extracted international thread, effectively to cooperate with the anchor pole nut.This operation is lost the work piece parent material once more, and the thread segment internal diameter is reduced more than the 2mm again.This processing method has reduced the thread segment net sectional area, so loss anchor bar body mother metal tensile strength 15～25%, and make anchor pole in use form stress to concentrate and at first destroy.2, hot worked deficiency is, produces iron scale, expands with heat and contract with cold and cause extensions, cylinder thinner than the mother metal body of rod, and scale error is bigger than normal, is difficult to realize that anchor bar body etc. by force.
Summary of the invention:
The purpose of this utility model is, a kind of first-class strong anchor pole of colding pressing is provided, so that material unaccounted-for (MUF) in the minimizing process and loss of strength, improve the structure of anchor bar body rib, adapt to cold-press process, improve anchor bar body bulk strength and performance, anchor pole is had the following advantages: body of rod bond stress is better, the intensity height, and can better improve the transmission effects etc. of anchored force and bearing capacity.Make the intensity of termination reach 95% of anchor bar body mother metal tensile strength, realize that substantially anchor pole etc. is strong, and the concentration phenomenon that can eliminate stress, anchor pole bulk strength 15～25% improved.
The utility model is for understanding the existing in prior technology problem, adopt following scheme to solve, it has the body of rod 1, axial screw type rib 2 is set on the body of rod 1, it with cold (rolling) pressure head facility with cold, hot rolling anchor bar body mother metal adopts cold (rolling) compression technology, do not press circle being about to 70-150 millimeter one-way spiral has the vertical muscle termination point of anchor rod rib cold (rolling) that disappears, be processed as the cylindrical body of rod that satisfies the rolled thread technical requirements, go out international thread by the rolling of rolled thread technology again, the body of rod 1 mother metal is full spirality heat by rib 2 along the body of rod and pricks one, hot rolling bad mold joint 3 is less than or equal to 2 millimeters, and body of rod diameter is 22 millimeters of Φ 20-Φ, pitch L
2Be the 14-18 millimeter, the high L of rib is the 0.6-1.2 millimeter, rib width L
1It is the 2-2.6 millimeter.The body of rod 1 mother metal is full spirality cold breakdown one by rib 2 along the body of rod, with round steel after the cold-drawn, adopts and wheel is rolled out rib, no bad mold joint, the high L0.6-1.2 millimeter of rib, rib width L
11-1.8 millimeter, pitch L
2The 8-12 millimeter, body of rod mother metal one end leaves 100-150 millimeter cylinder and does not roll rib, in order to direct roll threading.The body of rod diameter ratio that the screw type rib is one section is cold-pressed into cylindrical body of rod diameter only big 0.15-0.6 millimeter pressure head surplus or equates.Cold pressing in the termination rib that disappears of screw-type rib becomes 70-150 millimeter optical axis.The body of rod 1 mother metal is full screw type heat by rib 2 along the body of rod and pricks one, and it is 1.5 millimeters that heat is pricked bad mold joint 3, and the body of rod 1 diameter is 21.6 millimeters of Φ, pitch L
2Be 14 millimeters, the high L of rib is 1.1 millimeters, rib width L
1It is 2.2 millimeters.The body of rod 1 mother metal is full screw type cold breakdown one by rib 2 along the body of rod, with round steel after the cold-drawn, adopts wheel is rolled out rib, and no bad mold joint, the body of rod 1 diameter are 20.6 millimeters of Φ, the high L0.8 millimeter of rib, rib width L
11.8 millimeter, pitch L
2It is 8 millimeters.The utility model is pressed circle with the termination of the anchor bar body rib that disappears, be processed as and satisfy cylindrical that the rolled thread technology requires, go out international thread by the rolling of rolled thread technology again, the concrete roller that adopts rotates rolling, push termination point of anchor rod, by driving wheel 4 drivening rods 5, draw, promote escapement 6 driving gear nipper wheels 7 by pivot angle, move with cold roll 8 synchronous operations, the body of rod 1 rotates and axially swings reciprocating extrusion with roll 8, in roll 8 circular grooves, eliminate rib 2 under the extruding, form one section cylindrical, go out international thread by the rolling of rolled thread technology again.The whole process of this method are no turning cold working, body of rod mother metal material is not lost at processed position, the sectional area diameter of the cylindrical body of rod after cold rolling is round as a ball is only less than 0.3～0.6mm, and its thread segment tensile strength on average reaches 95% of anchor bar body mother metal tensile strength after rolled thread again.
Anchor pole of the present utility model has the following advantages: during installation, can fully stir the anchoring agent, the propelling rotary resistance is little, body of rod bond stress is good, intensity is high, improved the transmission effects of anchored force and bearing capacity, power can be delivered on the body of rod, bearing strength is improved, save rod body material, cost is lower.Make the intensity of termination reach about 95% of anchor pole mother metal tensile strength, realized that substantially anchor pole etc. is strong, eliminated that stress is concentrated and the brittle failure phenomenon has improved anchor pole bulk strength 15～25%.
Description of drawings:
Accompanying drawing 1 is the utility model first-class strong anchor structure schematic diagram of colding pressing, and accompanying drawing 2 is the utility model realize colding pressing structural representations of first-class strong termination point of anchor rod processing method.
The specific embodiment:
Accompanying drawing 1 is the first-class strong anchor pole of colding pressing described in the utility model, 1 is the body of rod among the figure, axial screw type rib 2 is set on the body of rod 1, that is: unidirectional left-handed nothing is indulged the muscle anchor pole, the diameter of the body of rod 1 has many specifications, usually in 22 millimeters scopes of Φ 20-Φ, for example the body of rod 1 diameter can be the specification of 21.6 millimeters of Φ, 20.6 millimeters of Φ etc.When the anchor bar body mother metal by rib 2 when the body of rod is full screw type heat and pricks one, it is 1.5 millimeters that heat is pricked bad mold joint 3, the diameter of the body of rod 1 is 21.6 millimeters of Φ, pitch L
2Be 14 millimeters, the high L of rib is a millimeter, rib width L
12.2 millimeter.When anchor rod body 1 mother metal by rib 2 when the body of rod is full screw type cold breakdown body, no bad mold joint, the body of rod 1 diameter are 20.6 millimeters of Φ, the high L0.8 millimeter of rib, rib width L
11.8 millimeter, pitch L
2It is 8 millimeters.The rolled thread diameter generally in M22.6 * 2.5, M23.6 * 2.5 scopes, the technical requirements of the equal strength anchor rod of can realizing colding pressing.
Processing method of colding pressing its termination of first-class strong anchor pole described in the utility model is to adopt cold rolling technology that the termination of the anchor pole rib that disappears is round as a ball, is processed as and satisfies cylindrical that the rolled thread technology requires, and goes out international thread by the rolling of rolled thread technology again.Processing method of the present utility model is shown in the accompanying drawing 2, by driving wheel 4 drivening rods 5, draws, promotes escapement 6 driving gear nipper wheels 7 by pivot angle, moves with cold roll 8 synchronous operations.The body of rod 1 rotates and axially with roll 8 swing reciprocating extrusion, eliminates rib 2 under the extruding in roll 8 circular grooves, form one section cylindrical, go out international thread by the rolling of rolled thread technology again.The utility model not detailed description is a known technology.
Claims (6)
1, the first-class strong anchor pole of colding pressing, it has the body of rod (1), axial screw type rib (2) is set on the body of rod (1), it is characterized in that: it with cold (rolling) pressure head facility with cold, hot rolling anchor bar body mother metal adopts cold (rolling) compression technology, do not press circle being about to 70-150 millimeter one-way spiral has the vertical muscle termination point of anchor rod rib cold (rolling) that disappears, be processed as the cylindrical body of rod that satisfies the rolled thread technical requirements, go out international thread by the rolling of rolled thread technology again, the body of rod (1) mother metal is full spirality heat by rib (2) along the body of rod and pricks one, hot rolling bad mold joint (3) is less than or equal to 2 millimeters, body of rod diameter is 22 millimeters of Φ 20-Φ, pitch L
2Be the 14-18 millimeter, the high L of rib is the 0.6-1.2 millimeter, rib width L
1It is the 2-2.6 millimeter.
2, the first-class strong anchor pole of colding pressing according to claim 1, it is characterized in that: the body of rod (1) mother metal is full spirality cold breakdown one by rib (2) along the body of rod, with round steel after the cold-drawn, adopts and wheel is rolled out rib, no bad mold joint, the high L0.6-1.2 millimeter of rib, rib width L
11-1.8 millimeter, pitch L
2The 8-12 millimeter, body of rod mother metal one end leaves 100-150 millimeter cylinder and does not roll rib, in order to direct roll threading.
3, the first-class strong anchor pole of colding pressing according to claim 1 is characterized in that: the body of rod diameter ratio that the screw type rib is a section is cold-pressed into cylindrical body of rod diameter only big 0.15-0.6 millimeter pressure head surplus or equates.
4, the first-class strong anchor pole of colding pressing according to claim 1 is characterized in that: cold pressing in the termination rib that disappears of screw-type rib becomes 70-150 millimeter optical axis.
5, the first-class strong anchor pole of colding pressing according to claim 1 and 2 is characterized in that: the body of rod (1) mother metal is full screw type heat by rib (2) along the body of rod and pricks one, and it is 1.5 millimeters that heat is pricked bad mold joint (3), and the body of rod (1) diameter is 21.6 millimeters of Φ, pitch L
2Be 14 millimeters, the high L of rib is 1.1 millimeters, rib width L
1It is 2.2 millimeters.
6, according to claim 1 or the 3 described first-class strong anchor poles of colding pressing, it is characterized in that: the body of rod (1) mother metal is full screw type cold breakdown one by rib (2) along the body of rod, with round steel after the cold-drawn, employing rolls out rib to wheel, no bad mold joint, and the body of rod (1) diameter is 20.6 millimeters of Φ, the high L0.8 millimeter of rib, rib width L
11.8 millimeter, pitch L
2It is 8 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265598 CN2547875Y (en) | 2001-06-15 | 2001-10-01 | Cold press head equal-strength anchoring bolt |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01243480.9 | 2001-06-15 | ||
| CN01243480 | 2001-06-15 | ||
| CN 01265598 CN2547875Y (en) | 2001-06-15 | 2001-10-01 | Cold press head equal-strength anchoring bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2547875Y true CN2547875Y (en) | 2003-04-30 |
Family
ID=34064707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01265598 Expired - Fee Related CN2547875Y (en) | 2001-06-15 | 2001-10-01 | Cold press head equal-strength anchoring bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2547875Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011163449A1 (en) * | 2010-06-24 | 2011-12-29 | Nucor Steel Birmingham, Inc. | A tensionable threaded rebar bolt |
| CN103104269A (en) * | 2012-12-07 | 2013-05-15 | 天津银龙预应力材料股份有限公司 | Super high strength pre-stressed anchor rod |
| CN101784753B (en) * | 2007-08-31 | 2013-10-16 | 山特维克知识产权股份有限公司 | Hollow rock bolt, self -drilling rock bolt and method of forming a hollow rock bolt |
| US9010165B2 (en) | 2011-01-18 | 2015-04-21 | Nucor Corporation | Threaded rebar manufacturing process and system |
-
2001
- 2001-10-01 CN CN 01265598 patent/CN2547875Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784753B (en) * | 2007-08-31 | 2013-10-16 | 山特维克知识产权股份有限公司 | Hollow rock bolt, self -drilling rock bolt and method of forming a hollow rock bolt |
| WO2011163449A1 (en) * | 2010-06-24 | 2011-12-29 | Nucor Steel Birmingham, Inc. | A tensionable threaded rebar bolt |
| US9551150B2 (en) | 2010-06-24 | 2017-01-24 | Nucor Corporation | Tensionable threaded rebar bolt |
| US9010165B2 (en) | 2011-01-18 | 2015-04-21 | Nucor Corporation | Threaded rebar manufacturing process and system |
| US9855594B2 (en) | 2011-01-18 | 2018-01-02 | Nucor Corporation | Threaded rebar manufacturing process and system |
| CN103104269A (en) * | 2012-12-07 | 2013-05-15 | 天津银龙预应力材料股份有限公司 | Super high strength pre-stressed anchor rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |