CN102493824A - Retractable trapezoid support with cushion blocks - Google Patents
Retractable trapezoid support with cushion blocks Download PDFInfo
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- CN102493824A CN102493824A CN 201110411302 CN201110411302A CN102493824A CN 102493824 A CN102493824 A CN 102493824A CN 201110411302 CN201110411302 CN 201110411302 CN 201110411302 A CN201110411302 A CN 201110411302A CN 102493824 A CN102493824 A CN 102493824A
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- trapezoid support
- retractable
- trapezoid
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Abstract
The invention provides a retractable trapezoid support with cushion blocks. The retractable trapezoid support consists of a top beam and two combined stand columns, wherein each of the combined stand columns is formed by fastening a column head, a column body and a longitudinal retractable body which is arranged between the column head and the column body by bolts which pass through screw holes of the column head and the column body through a clamping plate on which a strip groove is formed; two ends of the top beam are in curved surface connection with the combined stand columns through sliding cushion blocks; and a transverse retractable body is arranged between the top beam and each sliding cushion block. The retractable trapezoid support has high bidirectional contractibility and can adapt to the change of ground pressure of a laneway better. Through the retractable trapezoid support, a fabricated reinforced concrete trapezoid support which is out of use due to lack of high contractibility can be used again, the support effect of an I-shaped steel support can be further improved, the using amount of the I-shaped steel support can be reduced, the quality of the laneway support can be improved, the support cost can be reduced, steel consumption can be reduced, wood is not needed, and ecological environment preservation, energy conservation and emission reduction are facilitated.
Description
Technical field
The invention belongs to mine laneway support technology field, particularly a kind of pad-setting type contractibility trapezoid support.
Background technology
The trapezoid support that is used for the mine laneway supporting is also claimed the canopy cribbing, and it is made up of a back timber and two root posts.Its material therefor mainly contains timber, steel concrete and i iron etc.It is that the mankind are used for the recovery of subterranean mineral, uses the historical the longest roadway support technology maximum with usage quantity.The connected mode of existing set cap and column and support contractibility can acquisition, wood support adopts generally personally that mode connects, its contractibility relies on the compression of member self; Reinforced concrete support adopts personally or the square opening mode connects, and its contractibility system relies on the method for taking to be provided with in the junction of back timber and column compressible wooden unit; The i iron support adopts age of a draught animal mode to connect, and its contractibility is then through overcoming member because of frictional force that bolton produced.These trapezoid supports are poor because of its contractibility, influenced the supporting effect of support.
" rock mechanics and shaft and drift supporting " (Coal Industry Press publishes August nineteen sixty) chapter 12; Done detailed introduction and argumentation to having obtained the assembled steel reinforced concrete trapezoid support of promoting the use of at that time, having particularly pointed out the contractibility problem that solves this kind support in the argumentation is its key of further promoting the use of.Really, arrived twentieth century the 1970s and 1980s, this kind support is compelled to stop using because of can't resolve the contractibility problem, causes the standard GB 248-64 of this kind trapezoid support also therefore to be cancelled.
" being listed as the assembled steel reinforced concrete trapezoid support of solution in the simple and clear handbook of Chinese coal industry (Coal Industry Press publishes nineteen ninety-five) chapter 5 " exploitation " literary composition stops using; Must seek the new technology that substitutes wood support; Country was through the research and development in 3 years; The series of products of the mining i beam trapezoid support used of achieving success, and introduced this support and obtain yieldable several method.But these yieldable methods have influenced the supporting effect of this type support not by extensive employing, so often take place because of support lacks contractibility, being crushed out of shape loses support capacity.Along with the increase of the coal mining degree of depth, this situation is more outstanding, therefore needs sometimes to take pine to help the measure of reducing pressure and reinforcing to support, has caused the increase of roadway support cost.
" coal science and technology " (Coal Industry Press's publication) the 12nd phase of calendar year 2001, the 9th phase in 2009; " the low-cost supporting method pre-test of a three-soft seam gob side entry driving " literary composition and " ore deposit, a Gu Han mountain three-soft seam stope drift active workings worker steel combination canopy support technology " literary composition have been published respectively; Promptly be to have introduced to work as comparatively instability of roadway surrounding rock; Receive supporting ground pressure effect or roadway surrounding rock extremely unstable again; And the instantiation of decompression of pine group and reinforcement measure is taked when belonging to deep mining in the tunnel to the i iron support.
Summary of the invention
The object of the invention; Be in sum trapezoid support because of the contractibility problem; Cause that assembled steel reinforced concrete trapezoid support is compelled to be stopped using, and the mining i beam trapezoid support can not bring into play the problem of supporting effect better, provide a kind of and can not only improve the roadway support quality and reduce the roadway support cost; Also can help the pad-setting type contractibility trapezoid support of ecological environmental protection and energy-saving and emission-reduction less with steel with without timber.
Pad-setting type contractibility trapezoid support of the present invention is made up of a back timber and two combined type columns.The combined type column is by column cap, shaft and be arranged at the body that vertically can contract between the two, passes fastening the forming of screw of column cap and shaft respectively through the clamping plate that are provided with bar-shaped trough through bolt.
The two ends of back timber constitute curved surface through slip cushion block and combined type column and are connected, and back timber and bottom are provided with between the slip cushion block of curved surface groove and are provided with the body that laterally can contract.Rectangular or circular or other geometry of the section of back timber and combined type column adopts steel concrete or shape or adopts steel concrete and shape to process simultaneously.Vertically can contract body, laterally the body that can contract adopts lumps of wood piece or batten or wooden stick or sheet rubber or sticking plaster to process.
Pad-setting type contractibility trapezoid support of the present invention not only has the advantage of original trapezoid support, has more good two-way contractibility ability, can adapt to the variation that press on ground, tunnel better.The assembled steel reinforced concrete trapezoid support that it not only can make for want of good contractibility can be stopped use recovers to use; Can also make a large amount of at present i iron supports that use bring into play better supporting effect; Do not take to reinforce measures to reduce stresses, can avoid support to be destroyed, lose support capacity to a great extent by the Hair Fixer shape of changing with pine group.The supporting quality that can not only improve the tunnel with reduce support cost, can also consume the steel that need utilize electric energy to smelt to form less and, help ecological environmental protection and energy-saving and emission-reduction without timber.
Description of drawings
Fig. 1 is the front view that the present invention adopts the pad-setting type contractibility trapezoid support that Reinforced Concrete Materials processes;
Fig. 2 is the A portion enlarged drawing among Fig. 1;
Fig. 3 is the A-A sectional drawing among Fig. 2.
The specific embodiment
Below in conjunction with above-mentioned accompanying drawing instance, the embodiment of pad-setting type contractibility trapezoid support of the present invention is done concrete the detailed description.
Instance shown in the pad-setting type contractibility trapezoid support of the present invention includes back timber 1, column cap 2, shaft 3, slip cushion block 4, vertically can contract body 6, laterally can contract body 9, bolt 7 and be provided with the clamping plate 5 of bar-shaped trough 8.
Pad-setting type contractibility trapezoid support of the present invention is made up of a back timber 1 and two combined type columns.The combined type column is by column cap 2, shaft 3 and be arranged at the body 6 that vertically can contract between the two, passes fastening the forming of screw of column cap 2 and shaft 3 respectively through the clamping plate 5 that are provided with bar-shaped trough 8 through bolt 7.
The two ends of back timber 1 constitute curved surface through slip cushion block 4 and combined type column and are connected, and back timber and bottom are provided with between the slip cushion block 4 of curved surface groove and are provided with the body 9 that laterally can contract.Rectangular or circular or other geometry of section of back timber 1 and combined type column adopts steel concrete or shape or adopts steel concrete and shape to process simultaneously.Vertically can contract body 6, laterally can contract body 9 adopts lumps of wood pieces or batten or wooden stick or sheet rubber or sticking plaster to process; They make trapezoid support of the present invention have good two-way contractibility can, can adapt to better institute's supporting roadway surrounding rock characteristic, press the variation of size and shrinkage value.
When combined type column of the present invention is assembled; The clamping plate 5 that with column cap 2, shaft 3, vertically can contract body 6 and be provided with bar-shaped trough 8 are positioned on the special-purpose assembly or fitting table; Pass the screw of column cap 2, shaft 3 through bolt 7 respectively through the clamping plate 5 that are provided with bar-shaped trough 8 then, column cap 2 and shaft 3 are tightened to one.
When pad-setting type contractibility trapezoid support of the present invention is installed; Earlier back timber 1 is risen near the back position; And then erect two combined type columns that covered slip cushion block 4, it is withstood back timber 1, and between back timber 1 and slip cushion block 4, the body 9 that laterally can contract is installed; Adjust the direction of support and the angle of combined type column then, at last through backboard and timber wedge being installed with support frame jail.
Embodiment:
Pad-setting type contractibility trapezoid support example illustrated of the present invention is to adopt Reinforced Concrete Materials to process, and the tame coal mining enterprise in Guizhou Province has carried out type approval test in November, 2007.At the alternate heading that receives back production dynamic pressure influence, 24 of trapezoid supports of the present invention have been installed continuously, long 20 meters of supporting tunnel has reached 4 years so far, still using at present, and in continuing observation, its test observation obtains following effect:
1, the longitudinal and transverse two directions of trapezoid support of the present invention are along with the increasing of mine laneway ground pressure; When the duty that trapezoid support shrinks gradually; Its suffered roof pressure is that 4.8 tons, side pressure are 1.2 tons; Trapezoid support vertically, when the transverse contraction value reaches 90 millimeters and 120 millimeters respectively, promptly stop to shrink.When stopping contraction state, its suffered roof pressure is that 8 tons, side pressure are 1.7 tons.Avoid the ground voltage crest value in tunnel at the contraction process medium-height trestle, in the limit of power that the design permission is carried, work, supporting stably the tunnel.Yet not good yieldable other trapezoid support adjacent in this tunnel then destroys, and therefore repeatedly keeps in repair.
2, use the trapezoid support of i iron, it is whenever put up originally is 1200 yuan, and trapezoid support of the present invention is whenever put up these only about 350 yuan, reaches 2/3rds so reduce cost.
3, trapezoid support of the present invention is compared with not having good yieldable steel concrete trapezoid support, and its section is little, in light weight.The section of back timber is 10 centimeters * 17 centimeters, weighs 70 kilograms that the section of combined type column is 8 centimeters * 12 centimeters, weighs 45 kilograms.When installing, trapezoid support of the present invention, installs one half an hour approximately with three workmans not by apparatus.
4, trapezoid support of the present invention, though be installed in the acid phreatic tunnel, and it is unlike adjacent i iron trapezoid support, its column bottom also needs to wrap up with cement mortar.
Claims (4)
1. pad-setting type contractibility trapezoid support; Constitute by a back timber (1) and two combined type columns; The combined type column is by column cap (2), shaft (3) and be arranged at the body (6) that vertically can contract between the two; Pass fastening the forming of screw of column cap (2) and shaft (3) respectively through the clamping plate (5) that are provided with bar-shaped trough (8) through bolt (7); The two ends that it is characterized in that back timber (1) are connected through slip cushion block (4) and combined type column formation curved surface, are provided with the body (9) that laterally can contract between the two ends of back timber (1) and the slip cushion block (4).
2. trapezoid support according to claim 1 is characterized in that adopting rectangular or circular or other geometry of section of back timber (1) and combined type column steel concrete or shape or adopt steel concrete and shape to process simultaneously.
3. trapezoid support according to claim 1, the bottom of the cushion block (4) that it is characterized in that sliding is provided with the curved surface groove.
4. trapezoid support according to claim 1, the body (6) that it is characterized in that vertically can contracting, laterally the body (9) that can contract adopts lumps of wood piece or batten or wooden stick or sheet rubber or sticking plaster to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110411302.4A CN102493824B (en) | 2011-12-12 | 2011-12-12 | Retractable trapezoid support with cushion blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110411302.4A CN102493824B (en) | 2011-12-12 | 2011-12-12 | Retractable trapezoid support with cushion blocks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102493824A true CN102493824A (en) | 2012-06-13 |
| CN102493824B CN102493824B (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110411302.4A Expired - Fee Related CN102493824B (en) | 2011-12-12 | 2011-12-12 | Retractable trapezoid support with cushion blocks |
Country Status (1)
| Country | Link |
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| CN (1) | CN102493824B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924990A (en) * | 2014-05-07 | 2014-07-16 | 刘允勇 | High-intensity retractable support |
| CN105041316A (en) * | 2015-06-29 | 2015-11-11 | 徐庆余 | Pillar mining method |
| CN113622973A (en) * | 2021-10-11 | 2021-11-09 | 煤炭科学研究总院 | Tunnel support shed frame |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207098U (en) * | 1987-05-13 | 1988-03-09 | 中国矿业学院 | Telescopic joist chock |
| CN2061607U (en) * | 1989-12-30 | 1990-09-05 | 鹤壁矿务局煤炭科学研究所 | Sliding member of bi-directional telescopic i steel beam ladder prob for mine |
| CN2111364U (en) * | 1991-10-24 | 1992-07-29 | 芙蓉矿务局 | Two-way expanding support |
| CN2137288Y (en) * | 1992-09-22 | 1993-06-30 | 新汶矿务局 | Trapezoid two-way flexible prop |
| CN1624276A (en) * | 2004-12-04 | 2005-06-08 | 庄炳元 | Assembling composite shore |
| CN202001036U (en) * | 2011-03-25 | 2011-10-05 | 鹤壁煤电股份有限公司第三煤矿 | Reinforced shed used in U-shaped shed-supported laneway |
-
2011
- 2011-12-12 CN CN201110411302.4A patent/CN102493824B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207098U (en) * | 1987-05-13 | 1988-03-09 | 中国矿业学院 | Telescopic joist chock |
| CN2061607U (en) * | 1989-12-30 | 1990-09-05 | 鹤壁矿务局煤炭科学研究所 | Sliding member of bi-directional telescopic i steel beam ladder prob for mine |
| CN2111364U (en) * | 1991-10-24 | 1992-07-29 | 芙蓉矿务局 | Two-way expanding support |
| CN2137288Y (en) * | 1992-09-22 | 1993-06-30 | 新汶矿务局 | Trapezoid two-way flexible prop |
| CN1624276A (en) * | 2004-12-04 | 2005-06-08 | 庄炳元 | Assembling composite shore |
| CN202001036U (en) * | 2011-03-25 | 2011-10-05 | 鹤壁煤电股份有限公司第三煤矿 | Reinforced shed used in U-shaped shed-supported laneway |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924990A (en) * | 2014-05-07 | 2014-07-16 | 刘允勇 | High-intensity retractable support |
| CN103924990B (en) * | 2014-05-07 | 2016-04-06 | 刘允勇 | High strength compressibile support |
| CN105041316A (en) * | 2015-06-29 | 2015-11-11 | 徐庆余 | Pillar mining method |
| CN113622973A (en) * | 2021-10-11 | 2021-11-09 | 煤炭科学研究总院 | Tunnel support shed frame |
| CN113622973B (en) * | 2021-10-11 | 2022-04-05 | 煤炭科学研究总院有限公司 | Tunnel support shed frame |
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| Publication number | Publication date |
|---|---|
| CN102493824B (en) | 2014-04-02 |
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Granted publication date: 20140402 Termination date: 20161212 |