CN110424991B - Collapsible arc-shaped top beam - Google Patents

Collapsible arc-shaped top beam Download PDF

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Publication number
CN110424991B
CN110424991B CN201910693200.2A CN201910693200A CN110424991B CN 110424991 B CN110424991 B CN 110424991B CN 201910693200 A CN201910693200 A CN 201910693200A CN 110424991 B CN110424991 B CN 110424991B
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China
Prior art keywords
steel pipe
seamless
rod body
hinged
connecting piece
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CN201910693200.2A
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Chinese (zh)
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CN110424991A (en
Inventor
李冲
康志鹏
李柏壮
何思锋
韩军
胡寅
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/006Caps for supporting mine roofs characterised by the material
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/01Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/02Cantilever extension or similar protecting devices
    • E21D17/08Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086Cap joints for obtaining a coal-face free of pit-props or articulated type
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/10Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06Special mine caps or special tops of pit-props for permitting step-by-step movement
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/066Pivoted cantilever extensions therefor

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses a retractable arc-shaped top beam which comprises an extension steel pipe, a bent hinge connecting piece, a seamless long steel pipe, a seamless short steel pipe, a hinge steel pipe, a threaded rod body and a sliding block, wherein the extension steel pipe is fixedly connected with the extension steel pipe; a plurality of seamless long steel pipes and a plurality of seamless short steel pipes are welded into an upper frame shaped like a Chinese character tian; two ends of two seamless long steel pipes positioned at two sides of the whole body are connected with the extension steel pipe through a bent hinge connecting piece; the lower end of the bending-hinging connecting piece is hinged with a hinging steel pipe; the other end of the hinged steel pipe is welded on the sliding block; the slide block is sleeved on the rod body with the thread; the upper end of the threaded rod body is welded with a connecting point of the seamless long steel pipe and the seamless short steel pipe; the lower end of the threaded rod body is connected with a fixed nut. The invention can make the temporary support of the tunnel more convenient and faster, has simple and convenient volume adjustment, realizes 'increase of the support area and active support', can greatly reduce the time of the temporary support and save the manpower. Compared with the prior art, the invention has the advantages of simple structure, simple and convenient experimental operation, time saving, labor saving and the like.

Description

Collapsible arc-shaped top beam
Technical Field
The invention relates to a retractable arc-shaped top beam, and belongs to the technical field of mining engineering.
Background
At present, a temporary supporting device used for a coal mine semicircular arch rock roadway mainly adopts semicircular wood to support in cooperation with a top slip device, and the semicircular wood supporting device can only be suitable for roadways with better geological conditions and difficult roof fall. And the semicircular wood and the top sliding device need to be continuously disassembled and assembled, so that the tunneling time of the rock roadway can be increased, meanwhile, the supporting area is small, the top control effect is poor, and roof caving is easy to occur in the rock roadway with complex conditions. And the adoption of the arc-shaped retractable top beam can increase the top protection area, reduce the support time, be beneficial to fast tunneling, ensure the safety and stability of the top plate and adapt to roadway support under complex geological conditions.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a retractable arc-shaped top beam, which is used for reforming a temporary supporting device under the condition of not influencing the original working procedure of rock roadway tunneling, and the temporary supporting device is simple in structure, economical, practical and convenient to operate, so that the aims of increasing the supporting area, reducing the supporting time, ensuring the stability of a top plate and being suitable for complex geological conditions are fulfilled.
In order to achieve the purpose, the invention adopts the technical scheme that: a retractable arc top beam comprises an extension steel pipe, a bent-hinged connecting piece, a seamless long steel pipe, a seamless short steel pipe, a hinged steel pipe, a threaded rod body and a sliding block; the plurality of seamless long steel pipes and the plurality of seamless short steel pipes are welded into an upper frame shaped like a Chinese character tian; two ends of the two seamless long steel pipes positioned at two sides of the whole body are connected with the extension steel pipe through a bent hinge connecting piece; the lower end of the bent hinge connecting piece is hinged with a hinge steel pipe; the other end of the hinged steel pipe is welded on the sliding block; the sliding block is sleeved on the rod body with the thread; the upper end of the threaded rod body is welded with a connecting point of the seamless long steel pipe and the seamless short steel pipe; the lower end of the threaded rod body is connected with a fixed nut.
Furthermore, a seamless long steel pipe end, a seamless short steel pipe end and a hinged steel pipe end are hinged on the bending and hinging connecting piece; the seamless long steel pipe end, the seamless short steel pipe end and the hinged steel pipe end are fixed through nuts, and the seamless long steel pipe end, the seamless short steel pipe end and the hinged steel pipe end are sleeved on the fixing screws in an embedded mode.
Furthermore, the threaded rod body is provided with threads; the screw thread is distributed along the axial direction of the rod body, and the screw thread is a one-way screw thread.
Furthermore, the seamless long steel tube and the seamless short steel tube are vertically distributed; the number of the seamless long steel tubes is three; the number of the seamless short steel tubes is three; the number of the extension steel pipes is 6.
The invention has the beneficial effects that: the invention provides a convenient retractable temporary supporting device for an arc-shaped top beam, which is characterized in that a bent hinge mechanism, an extension steel pipe, a sliding block, a nut with a clamping groove and a nut device are additionally arranged, so that the arc-shaped top beam can be retracted in volume in the transportation process, the transportation is convenient, the supporting area can be increased through the extension steel pipe in the supporting process, the active supporting is realized, the top control effect is excellent, the time required by the temporary supporting can be greatly reduced, the temporary supporting effect is enhanced, the device is convenient and simple, the supporting area is easy to adjust, and the transportation is more convenient.
Compared with the prior art, the invention has the following beneficial effects:
the common temporary supporting device has small top control area, and can support larger top plate area, so that the supporting effect is excellent, and the safety factor is higher.
To the problem that the common temporary supporting device is large in size and inconvenient to transport, the device can withdraw the extension steel pipe when not supporting, so that the transportation is more convenient, and the roadway construction is accelerated.
The device has the advantages that the common temporary supporting device can only passively support, the supporting effect is poor, and serious potential safety hazards can be brought to underground operation; and in the second point, the matched sliding block can directly slide on the threaded steel pipe, so that the supporting can be actively and timely carried out. Potential safety hazards are solved, and the safety factor is greatly improved.
Drawings
FIG. 1 is a front view of the present invention in a schematic configuration;
FIG. 2 is a schematic top view of the structure of the present invention;
FIG. 3 is a schematic left side view of the structure of the present invention;
FIG. 4 is an enlarged schematic top view of part A of the present invention;
fig. 5 is an enlarged view of part B of the present invention.
In the figure: 1. the steel pipe comprises an extension steel pipe, 2, a bent and hinged connecting piece, 3, a seamless long steel pipe, 4, a seamless short steel pipe, 5, a hinged steel pipe, 6, a threaded rod body, 7, a sliding block, 8 and a nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, 2 and 3, a retractable arc-shaped top beam comprises an extension steel pipe 1, a bending-hinging connecting piece 2, a seamless long steel pipe 3, a seamless short steel pipe 4, a hinging steel pipe 5, a threaded rod body 6 and a sliding block 7; the plurality of seamless long steel pipes 3 and the plurality of seamless short steel pipes 4 are welded into an upper frame shaped like a Chinese character tian; two ends of the two seamless long steel pipes 3 positioned at two sides of the whole are connected with the extension steel pipe 1 through the bent hinge connecting piece 2; the lower end of the bending hinge connecting piece 2 is hinged with a hinge steel pipe 5; the other end of the hinged steel pipe 5 is welded on the sliding block 7; the slide block 7 is sleeved on the threaded rod body 6; the upper end of the threaded rod body 6 is welded with the connecting points of the seamless long steel pipe 3 and the seamless short steel pipe 4; the lower end of the threaded rod body 6 is connected with a fixed nut 8.
The end of the seamless long steel pipe 3, the end of the seamless short steel pipe 4 and the end of the hinged steel pipe 5 are hinged on the bending hinge connecting piece 2; the end of the seamless long steel pipe 3, the end of the seamless short steel pipe 4 and the end of the hinged steel pipe 5 are fixed through nuts, and the end of the seamless long steel pipe 3, the end of the seamless short steel pipe 4 and the end of the hinged steel pipe 5 are sleeved and embedded on the fixing screws; the degree of freedom that the locking degree of screw had decided extension steel pipe 1 wherein can carry out crooked thereby reaching flexible purpose extension steel pipe 1, articulated steel pipe 5 welds on slider 7, slider 7 has certain degree of freedom on the threaded rod body 6, threaded rod body 6 is last to have nut 8 and to take the draw-in groove nut to be used for fixed slider 7.
The threaded rod body 6 is provided with threads; the threads are distributed along the axial direction of the rod body and are unidirectional threads; and the nut 8 and the nut with the clamping groove are provided with matched threads, and the nut 8 can be locked to meet the supporting requirement in the supporting process.
The seamless long steel pipe 3 and the seamless short steel pipe 4 are vertically distributed; the number of the seamless long steel tubes 3 is three; the number of the seamless short steel tubes 4 is three; the number of the extension steel pipes 1 is 6.
The two ends of the seamless long steel pipe 3 are arc-shaped connecting parts, the arc part at one end of the extension steel pipe 1 and the arc part of the hinged steel pipe 5 are fixed through nuts 8, and the extension steel pipe 1 is reinforced through a triangle-like shape formed by the hinged steel pipe 5 and the sliding block 7 when supporting the top plate;
the bent hinge connecting piece 2 can enable the extension steel pipe 1 to rotate freely, the extension steel pipe 1 can be retracted under the condition of not supporting, the occupied space of the whole structure is reduced, the bent hinge connecting piece 2 is provided with a matched nut 8 for fixing the extension steel pipe 1, and the extension steel pipe 1 can rotate through the bent hinge connecting piece 2.
The supporting working principle is as follows: this collapsible formula arc back timber when strutting promotes slider 7 to fixed position along the 6 axial of the threaded rod body, will extend steel pipe 1 through curved hinge connecting piece 2 and open and extend, adjusts the position of slider 7, drives the motion of articulated steel pipe 5, and then screws curved hinge connecting piece 2 to fixed extension steel pipe 1 forms stable stress structure, plays and struts the purpose.
The invention can make the temporary support of the tunnel more convenient and faster, has simple and convenient volume adjustment, realizes 'increase of the support area and active support', can greatly reduce the time of the temporary support and save the manpower. Compared with the prior art, the invention has the advantages of simple structure, simple and convenient experimental operation, time saving, labor saving and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (3)

1. A retractable arc top beam is characterized by comprising an extension steel pipe (1), a bending hinge connecting piece (2), a seamless long steel pipe (3), a seamless short steel pipe (4), a hinge steel pipe (5), a threaded rod body (6) and a sliding block (7); a plurality of seamless long steel pipes (3) and a plurality of seamless short steel pipes (4) are welded into an upper frame shaped like a Chinese character tian; the two ends of the seamless long steel pipe (3) are connected with the extension steel pipe (1) through a bent hinge connecting piece (2); the lower end of the bending hinge connecting piece (2) is hinged with a hinge steel pipe (5); the other end of the hinged steel pipe (5) is welded on the sliding block (7); the sliding block (7) is sleeved on the threaded rod body (6); the upper end of the threaded rod body (6) is welded with a connecting point of the seamless long steel pipe (3) and the seamless short steel pipe (4); the lower end of the threaded rod body (6) is connected with a nut (8);
the bending-hinging connecting piece (2) is hinged with a seamless long steel pipe (3) end, a seamless short steel pipe (4) end and a hinged steel pipe (5) end; the end of the seamless long steel pipe (3), the end of the seamless short steel pipe (4) and the end of the hinged steel pipe (5) are fixed through nuts, and the end of the seamless long steel pipe (3), the end of the seamless short steel pipe (4) and the end of the hinged steel pipe (5) are sleeved and embedded on the fixing screws;
the bent hinge connecting piece (2) is provided with a matched nut (8) for fixing the extension steel pipe (1).
2. A retractable curved roof rail as claimed in claim 1, characterised in that the threaded rod body (6) is provided with a thread; the screw thread is distributed along the axial direction of the rod body, and the screw thread is a one-way screw thread.
3. A retractable arc-shaped top beam according to claim 1, characterized in that the seamless long steel tube (3) and the seamless short steel tube (4) are vertically distributed; the number of the seamless long steel tubes (3) is three; the number of the seamless short steel tubes (4) is three; the number of the extension steel pipes (1) is 6.
CN201910693200.2A 2019-07-30 2019-07-30 Collapsible arc-shaped top beam Active CN110424991B (en)

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Application Number Priority Date Filing Date Title
CN201910693200.2A CN110424991B (en) 2019-07-30 2019-07-30 Collapsible arc-shaped top beam

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Application Number Priority Date Filing Date Title
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CN110424991B true CN110424991B (en) 2021-07-23

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780067A (en) * 1951-05-15 1957-02-05 Gutehoffnungshuette Oberhausen Roof supporting means or cap and a method of positioning the same
CN104314596A (en) * 2014-10-30 2015-01-28 周文川 Pneumatic movable support of roadway
CN106014461A (en) * 2016-07-21 2016-10-12 金川集团股份有限公司 Protection device for roadway construction
CN206309412U (en) * 2016-12-28 2017-07-07 河南大有能源股份有限公司跃进煤矿 A kind of umbrella shape point pillar gib for coal mine roadway
CN108442952A (en) * 2018-05-03 2018-08-24 郑州合新科技有限公司 Circulatory self-moving formula lame advanced supporting hydraulic support
CN108590728A (en) * 2018-04-16 2018-09-28 中国矿业大学(北京) A kind of umbrella is mining can the two-way advanced supporting support of folding and unfolding hydraulic pressure
CN208184755U (en) * 2018-01-30 2018-12-04 郭东彬 A kind of coal mine driving suspension device that can easily be accommodated
CN109538257A (en) * 2019-01-28 2019-03-29 贵州大学 A kind of umbrella shape point pillar gib for coal mine roadway
CN110017158A (en) * 2019-04-26 2019-07-16 天地科技股份有限公司上海分公司 Tunnel safety protective cradle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780067A (en) * 1951-05-15 1957-02-05 Gutehoffnungshuette Oberhausen Roof supporting means or cap and a method of positioning the same
CN104314596A (en) * 2014-10-30 2015-01-28 周文川 Pneumatic movable support of roadway
CN106014461A (en) * 2016-07-21 2016-10-12 金川集团股份有限公司 Protection device for roadway construction
CN206309412U (en) * 2016-12-28 2017-07-07 河南大有能源股份有限公司跃进煤矿 A kind of umbrella shape point pillar gib for coal mine roadway
CN208184755U (en) * 2018-01-30 2018-12-04 郭东彬 A kind of coal mine driving suspension device that can easily be accommodated
CN108590728A (en) * 2018-04-16 2018-09-28 中国矿业大学(北京) A kind of umbrella is mining can the two-way advanced supporting support of folding and unfolding hydraulic pressure
CN108442952A (en) * 2018-05-03 2018-08-24 郑州合新科技有限公司 Circulatory self-moving formula lame advanced supporting hydraulic support
CN109538257A (en) * 2019-01-28 2019-03-29 贵州大学 A kind of umbrella shape point pillar gib for coal mine roadway
CN110017158A (en) * 2019-04-26 2019-07-16 天地科技股份有限公司上海分公司 Tunnel safety protective cradle

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