CN108167009A - It is a kind of test underground coal mine anchor-holding force of anchor bolt when with the matching used device of drawbench - Google Patents
It is a kind of test underground coal mine anchor-holding force of anchor bolt when with the matching used device of drawbench Download PDFInfo
- Publication number
- CN108167009A CN108167009A CN201810029680.8A CN201810029680A CN108167009A CN 108167009 A CN108167009 A CN 108167009A CN 201810029680 A CN201810029680 A CN 201810029680A CN 108167009 A CN108167009 A CN 108167009A
- Authority
- CN
- China
- Prior art keywords
- anchor
- bolt
- pressure plate
- auxiliary rod
- drawbench
- Prior art date
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 238000005260 corrosion Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000002161 passivation Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0086—Bearing plates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
It is a kind of test underground coal mine anchor-holding force of anchor bolt when with the matching used device of drawbench, including rectangle pressure plate (1), there is anchor pole punched out (2) at the center of pressure plate, the surrounding of anchor pole punched out has four symmetrical adjusting bolts (3), there is cushion rubber bumper (4) in the lower end of adjusting bolt, there are arc-shaped convex portion (7) in the two sides of pressure plate length direction, there is the auxiliary rod mounting hole (5) passed through for auxiliary rod in lug boss, have auxiliary rod fixing bolt (6) above auxiliary rod mounting hole.Situations such as coal wall out-of-flatness, failure of rib degree are larger or anchor net hinders is encountered during the test of underground anchor-holding force of anchor bolt, anchor pole is made to form plumbness with pressure plate using the device, drawbench can vertical outside drawing bolt when ensuring to carry out anchor-holding force of anchor bolt test with drawbench, rockbolt stress balances, and does not influence the accuracy of anchor force test.
Description
Technical field
The present invention relates to mating with drawbench during a kind of underground coal mine supporting, particularly test underground coal mine anchor-holding force of anchor bolt
The device used.
Background technology
Suspension roof support is a kind of common reinforcing laneway support pattern of underground coal mine, and bar is made with metalwork or other materials
Column is squeezed into the pre-drilled hole of chamber surrounding rock body, (also may not be used using the special tectonic and tail portion supporting plate of its head and the body of rod
With) or country rock and rock mass stability are combined together dependent on cohesive action and generate suspension effectiveness, combination beam effect and reinforcement
Effect, to achieve the purpose that supporting.With it is at low cost, supporting effect is good, easy to operate, using flexible and occupy construction headroom it is few
The advantages that.Anchor force is anchor rod anchored part and the binding force of rock mass, is the most important performance parameter of anchor pole, the bigger theory of anchor force
Bright anchoring effect is better, and bolt action is more reliable.Anchor-holding force of anchor bolt size is tested using drawbench.By testing anchor pole
Anchor force can examine the construction quality of anchor pole and the quality of evaluation roadway support system.
When carrying out the test of underground coal mine anchor-holding force of anchor bolt, it is larger to be frequently encountered coal wall out-of-flatness, failure of rib degree
Situations such as being hindered with anchor net cannot be guaranteed drawbench vertically outside drawing bolt at this time, causes rockbolt stress uneven, influences anchor
Gu the accuracy of power test.
Invention content
The object of the present invention is to provide it is a kind of test underground coal mine anchor-holding force of anchor bolt when with the matching used device of drawbench,
To solve above-mentioned technical problem,
It is provided by the invention test underground coal mine anchor-holding force of anchor bolt when with the matching used device of drawbench, including rectangle
There is anchor pole punched out at pressure plate, the center of pressure plate, and the surrounding of anchor pole punched out has four symmetrical adjusting bolts, adjust
There is cushion rubber bumper in the lower end of bolt, and there are arc-shaped convex portion in the two sides of pressure plate length direction, have in lug boss for auxiliary rod
The auxiliary rod mounting hole passed through has auxiliary rod fixing bolt above auxiliary rod mounting hole.
Beneficial effects of the present invention：
When underground coal mine anchor-holding force of anchor bolt is tested, coal wall out-of-flatness, failure of rib degree are larger or anchor net hinders etc. is encountered
Anchor pole can be passed through the anchor pole punched out of pressure plate, then screw four adjusting bolts, it is made to be stretched out from pressure plate bottom surface by situation
Different length is in contact with the coal wall of out-of-flatness, anchor pole is made to form plumbness with pressure plate, it is ensured that carry out anchor pole with drawbench
Drawbench vertically outside drawing bolt, rockbolt stress balance can not influence the accuracy that anchor force is tested when anchor force is tested.
If the broken of larger area occurs in coal wall, pressure plate and anchor pole new city plumbness can not be made by means of four adjusting bolts by only relying on
When, the auxiliary rod of different length can be worn in two lug bosses of pressure plate, the both ends of auxiliary rod is made to ride over break up coal respectively
On body, cooperation adjusting bolt makes pressure plate form plumbness with anchor pole.
Description of the drawings
Fig. 1 is the front view (vertical view) of structure of the present invention；
Fig. 2 is the bottom view of Fig. 1；
Fig. 3 is the A-A sectional views of Fig. 1.
In figure：1-pressure plate, 2-anchor pole punched out, 3-adjusting bolt, 4-cushion rubber bumper, 5-auxiliary rod mounting hole,
6-auxiliary rod fixing bolt, 7-lug boss.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be further described.
With reference to Fig. 1 to Fig. 3, the present embodiment test underground coal mine anchor-holding force of anchor bolt when with the matching used device of drawbench,
Including rectangle pressure plate 1, there is anchor pole punched out 2 at the center of pressure plate, and the surrounding of anchor pole punched out has symmetrical four
There are cushion rubber bumper 4 in adjusting bolt 3, the lower end of adjusting bolt, and there are arc-shaped convex portion 7 in the two sides of pressure plate length direction, convex
There is the auxiliary rod mounting hole 5 passed through for auxiliary rod (not shown) in the portion of rising, the top of auxiliary rod mounting hole is consolidated there are three auxiliary rod
Determine bolt 6.
The pressure plate is made of the anti-corrosion and high strength steel plate that can bear more than 300kN, and the width of pressure plate is
200mm, total length 320mm, bottom surface are plane, interior thickness 20mm；
It is higher by plane 25mm on pressure plate at the top of the arc-shaped convex portion of the pressure plate two sides, it is auxiliary in lug boss
It is 24mm to help bar mounting hole aperture；
The hole wall of the anchor pole punched out need to be through Passivation Treatment of polishing, the frictional resistance between reduction and spiral thread on anchor bolt；
The adjusting bolt is anti-corrosion and high strength bolt, and single bolt will can bear the pressure at right angle of more than 300kN, spiral shell
Bolt total length will can stretch out pressure plate bottom surface not less than 60mm；
The cushion rubber bumper will have enough compression strength, and not less than 45mm, thickness is not less than the diameter of cushion rubber bumper
10mm；There is the groove identical with adjusting bolt diameter at the center of cushion rubber bumper, its lower end is placed in when adjusting bolt is abutted against with coal wall
In the groove, the power on coal wall is acted on by cushion rubber bumper buffering adjusting bolt, mitigates the degree of crushing of coal body.
The auxiliary rod can be replaced with the anchor pole that scene does not use.
Claims (2)
1. it is a kind of test underground coal mine anchor-holding force of anchor bolt when with the matching used device of drawbench, it is characterised in that：Including rectangular
There is anchor pole punched out (2) at shape pressure plate (1), the center of pressure plate, and the surrounding of anchor pole punched out has four symmetrical adjustings
There are cushion rubber bumper (4) in bolt (3), the lower end of adjusting bolt, and there are arc-shaped convex portion (7) in the two sides of pressure plate length direction,
There is the auxiliary rod mounting hole (5) passed through for auxiliary rod in lug boss, have auxiliary rod fixing bolt above auxiliary rod mounting hole
(6)。
It is 2. special with the matching used device of drawbench during test underground coal mine anchor-holding force of anchor bolt according to claim 1
Sign is：
The pressure plate is made of the anti-corrosion and high strength steel plate that can bear more than 300kN, and the width of pressure plate is 200mm,
Total length is 320mm, and bottom surface is plane, interior thickness 20mm；
It is higher by plane 25mm on pressure plate at the top of the arc-shaped convex portion of the pressure plate two sides, the auxiliary rod in lug boss
Mounting hole (5) aperture is 24mm；
The hole wall of the anchor pole punched out (2) need to be through Passivation Treatment of polishing；
The adjusting bolt is anti-corrosion and high strength bolt, and single bolt can bear the pressure at right angle of more than 300kN, and bolt is total
Length will can stretch out pressure plate bottom surface not less than 60mm；
The diameter of the cushion rubber bumper is not less than 45mm, and thickness is not less than 10mm；The center of cushion rubber bumper has straight with adjusting bolt
The identical groove of diameter, its lower end is placed in the groove when adjusting bolt is abutted against with coal wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810029680.8A CN108167009B (en) | 2018-01-12 | 2018-01-12 | When a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810029680.8A CN108167009B (en) | 2018-01-12 | 2018-01-12 | When a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167009A true CN108167009A (en) | 2018-06-15 |
| CN108167009B CN108167009B (en) | 2019-05-07 |
Family
ID=62514524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810029680.8A Active CN108167009B (en) | 2018-01-12 | 2018-01-12 | When a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167009B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335884A (en) * | 2013-07-09 | 2013-10-02 | 郑卫华 | Backing plate used for anchor rod pull-out test |
| CN103398901A (en) * | 2013-08-08 | 2013-11-20 | 中国科学院武汉岩土力学研究所 | Indoor pull-out test apparatus for anchor rod |
| CN204781023U (en) * | 2015-07-08 | 2015-11-18 | 中交路桥南方工程有限公司 | Experimental counter -force device is drawn to side slope stock |
| CN105300718A (en) * | 2015-11-09 | 2016-02-03 | 山东科技大学 | Anchoring structure pullout test device and test method |
| CN205477685U (en) * | 2016-03-21 | 2016-08-17 | 郑卫华 | Ware is drawn in connection of stock anchor rope |
| CN205576987U (en) * | 2016-04-29 | 2016-09-14 | 广州建设工程质量安全检测中心有限公司 | Test device is drawn to multi -functional stock body |
-
2018
- 2018-01-12 CN CN201810029680.8A patent/CN108167009B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335884A (en) * | 2013-07-09 | 2013-10-02 | 郑卫华 | Backing plate used for anchor rod pull-out test |
| CN103398901A (en) * | 2013-08-08 | 2013-11-20 | 中国科学院武汉岩土力学研究所 | Indoor pull-out test apparatus for anchor rod |
| CN204781023U (en) * | 2015-07-08 | 2015-11-18 | 中交路桥南方工程有限公司 | Experimental counter -force device is drawn to side slope stock |
| CN105300718A (en) * | 2015-11-09 | 2016-02-03 | 山东科技大学 | Anchoring structure pullout test device and test method |
| CN205477685U (en) * | 2016-03-21 | 2016-08-17 | 郑卫华 | Ware is drawn in connection of stock anchor rope |
| CN205576987U (en) * | 2016-04-29 | 2016-09-14 | 广州建设工程质量安全检测中心有限公司 | Test device is drawn to multi -functional stock body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108167009B (en) | 2019-05-07 |
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Application publication date: 20180615 Assignee: Shanxi Huairen lianshun xichaigou Coal Industry Co.,Ltd. Assignor: LIAONING TECHNICAL University Contract record no.: X2022210000003 Denomination of invention: The utility model relates to a device matched with a puller when testing the anchoring force of underground anchor bolts in coal mines Granted publication date: 20190507 License type: Common License Record date: 20220126 |