CN108167009B - When a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench - Google Patents
When a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench Download PDFInfo
- Publication number
- CN108167009B CN108167009B CN201810029680.8A CN201810029680A CN108167009B CN 108167009 B CN108167009 B CN 108167009B CN 201810029680 A CN201810029680 A CN 201810029680A CN 108167009 B CN108167009 B CN 108167009B
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
When a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench, including rectangle pressure plate (1), the center of pressure plate has anchor pole punched out (2), the surrounding of anchor pole punched out has four symmetrical adjusting bolts (3), the lower end for adjusting bolt has cushion rubber bumper (4), the two sides of pressure plate length direction have arc-shaped convex portion (7), there is the auxiliary rod mounting hole (5) passed through for auxiliary rod in lug boss, there are auxiliary rod fixing bolt (6) above auxiliary rod mounting hole.Situations such as underground anchor-holding force of anchor bolt encounters coal wall out-of-flatness when testing, failure of rib degree is larger or anchor net hinders, anchor pole and pressure plate is set to form plumbness 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 balance, does not influence the accuracy of anchor force test.
Description
Technical field
The present invention relates to mating with drawbench when a kind of underground coal mine supporting, especially test underground coal mine anchor-holding force of anchor bolt
The device used.
Background technique
Suspension roof support is a kind of underground coal mine commonly reinforcing laneway support pattern, 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 at low cost, supporting effect is good, easy to operate, using flexible and occupancy construction headroom are few
The advantages that.Anchor force is the binding force of anchor rod anchored part with 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.Pass through test 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, at this time it cannot be guaranteed that the vertical outside drawing bolt of drawbench, causes rockbolt stress uneven, influence anchor
Gu the accuracy of power test.
Summary of the invention
The object of the present invention is to provide when a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench,
To solve the above technical problems,
When test underground coal mine anchor-holding force of anchor bolt provided by the invention 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, stretch out it from pressure plate bottom surface by situation
Different length is in contact with the coal wall of out-of-flatness, so that anchor pole and pressure plate is formed plumbness, it is ensured that carry out anchor pole with drawbench
Drawbench vertically outside drawing bolt, rockbolt stress balance can not influence the accuracy of anchor force test 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, and the both ends of auxiliary rod is made to ride over break up coal respectively
On body, cooperation, which adjusts bolt, makes pressure plate and anchor pole form plumbness.
Detailed description of the invention
Fig. 1 is the front view (top view) of structure of the invention；
Fig. 2 is the bottom view of Fig. 1；
Fig. 3 is the A-A sectional view of Fig. 1.
In figure: 1-pressure plate, 2-anchor pole punched out, 3-adjusting bolts, 4-cushion rubber bumpers, 5-auxiliary rod mounting holes,
6-auxiliary rod fixing bolts, 7-lug bosses.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be further described.
In conjunction with 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
Bolt 3 is adjusted, there is cushion rubber bumper 4 in the lower end for 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, there are three auxiliary rods to consolidate for the top of auxiliary rod mounting hole
Determine bolt 6.
The pressure plate is made of the anti-corrosion and high strength steel plate that can bear 300kN or more, and the width of pressure plate is
200mm, total length 320mm, bottom surface are plane, interior thickness 20mm；
Plane 25mm on pressure plate is higher by the top of the arc-shaped convex portion of the pressure plate two sides, it is auxiliary in lug boss
Helping bar mounting hole aperture is 24mm；
The hole wall of the anchor pole punched out need to be through Passivation Treatment of polishing, with the frictional resistance between reduction and spiral thread on anchor bolt；
The adjusting bolt is anti-corrosion and high strength bolt, and single bolt wants that the pressure at right angle of 300kN or more, spiral shell can be born
Bolt total length wants to stretch out pressure plate bottom surface not less than 60mm；
The cushion rubber bumper will have enough compression strength, and the diameter of cushion rubber bumper is not less than 45mm, and thickness is not less than
10mm；There is groove identical with the diameter of bolt is adjusted at the center of cushion rubber bumper, and adjusts its lower end when bolt is abutted against with coal wall and is placed in
In the groove, adjusting bolt is buffered by cushion rubber bumper and acts on the power on coal wall, mitigates the degree of crushing of coal body.
The auxiliary rod can be replaced with the anchor pole that scene does not use.
Claims (1)
1. when a kind of test underground coal mine anchor-holding force of anchor bolt with the matching used device of drawbench, it is characterised in that: including rectangular
Shape pressure plate (1), the center of pressure plate have anchor pole punched out (2), and the surrounding of anchor pole punched out has four symmetrical adjustings
Bolt (3), the lower end for adjusting bolt have cushion rubber bumper (4), and the two sides of pressure plate length direction have arc-shaped convex portion (7),
There is the auxiliary rod mounting hole (5) passed through for auxiliary rod in lug boss, has auxiliary rod fixing bolt above auxiliary rod mounting hole
(6)；
The pressure plate is made of the anti-corrosion and high strength steel plate that can bear 300kN or more, and the width of pressure plate is 200mm,
Total length is 320mm, and bottom surface is plane, interior thickness 20mm；
Plane 25mm on pressure plate, the auxiliary rod in lug boss are higher by the top of the arc-shaped convex portion of the pressure plate two sides
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 is able to bear the pressure at right angle of 300kN or more, and bolt is total
Length wants to 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 adjusts its lower end when bolt is abutted against with coal wall and is placed in the groove.
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 CN108167009A (en) | 2018-06-15 |
| CN108167009B true 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) |
Family Cites Families (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 |
| CN103398901B (en) * | 2013-08-08 | 2015-04-29 | 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 |
| CN105300718B (en) * | 2015-11-09 | 2018-01-26 | 山东科技大学 | Anchor structure pull-out 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN108167009A (en) | 2018-06-15 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
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 |