CN87206911U - Insert bottom type contractable metal support - Google Patents

Insert bottom type contractable metal support Download PDF

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Publication number
CN87206911U
CN87206911U CN 87206911 CN87206911U CN87206911U CN 87206911 U CN87206911 U CN 87206911U CN 87206911 CN87206911 CN 87206911 CN 87206911 U CN87206911 U CN 87206911U CN 87206911 U CN87206911 U CN 87206911U
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CN
China
Prior art keywords
clamp
support
post leg
contractibility
bottom type
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.)
Withdrawn
Application number
CN 87206911
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Chinese (zh)
Inventor
邱运新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING POSTGRADUATE DEPT CHINESE MINING COLLEGE
Original Assignee
BEIJING POSTGRADUATE DEPT CHINESE MINING COLLEGE
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Application filed by BEIJING POSTGRADUATE DEPT CHINESE MINING COLLEGE filed Critical BEIJING POSTGRADUATE DEPT CHINESE MINING COLLEGE
Priority to CN 87206911 priority Critical patent/CN87206911U/en
Publication of CN87206911U publication Critical patent/CN87206911U/en
Withdrawn legal-status Critical Current

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Abstract

The utility model provides an insert bottom type telescopic I-steel metal support, which is used for supporting when mining in slices thick coal seam of mine picking tunnel and along empty remaining tunnel. The support is characterized in that the support adopts I-steel as materials, a tailor-made clamp is arranged on a top beam and a pole leg, a perforated bottom shim plate is provided with the bottom of the pole leg, and the support realizes bidirectional telescopic along a top motherboard and both sides by means of the function of the clamp. The utility model has the advantages of simple structure, low cost, high capability, convenient reclamation multiplexing. The utility model is not only provided with good contractibility, but also solving the problem of thick coal seam along empty remaining tunnel better.

Description

Insert bottom type contractable metal support
The utility model relates to the metallic support that a kind of mine support is used, and particularly relates to be applicable to what mine development heading and gob side entry retaining roadway support were used, has yieldable insert bottom type I font steel bracket.
Along with improving constantly of mine comprehensive mechanization degree, stope is taken over the continuous shortening in cycle, and requirement can be prepared the work plane that makes new advances as early as possible, thereby generally adopts edge air gallery technology.Dig a tunnel less after adopting this technology, can relax the face of adopting and take over nervous situation, reduce the exploiting field drivage ratio, improve coal yield.Use more successfully in the edge air gallery technology thin and medium-thickness seam at home, but when thick seam slicing system, mode of occupation is not ideal.Its main cause be employed excavation support can not suitable for surrounding rock the characteristics of distortion, promptly do not have to be competent at the support of high seam gob side entry retaining.Learnt in " domestic gob side entry retaining support forms the on-site investigation report " according in 1986, though arch U shaped steel collapsible timbering is adopted in development heading at present part, but since contractibility can be bad, cost is high, set up, recovery, multiplexing difficulty, so can not extensively promote the use of.Adopt trapezoidal U shaped steel collapsible timbering in addition in addition, but the low section that is only applicable to of the little supporting capacity of bending resistance is little, the tunnel that surrouding rock deformation is big, and not only contractibility can very fast decline along with the distortion of support, and the multiplexing difficulty of shaping, therefore be extensive use of and be restricted again.
The purpose of this utility model is to provide a kind of good contractibility that has, and advantages of high bearing capacity, material source be the development heading metallic support widely.
The invention main points of insert bottom type contractibility metallic support are: its back timber 1 and post leg 2 can carry out after bearing certain load and can contract, and the realization of contractibility energy is by clamp 4, therefore clamp 4 is critical components of this metallic support, and clamp 4 is formed by connecting through bolt 6 by both wings friction-type fixture block 5.This fixture block has two friction inclined-planes, just matches with the wing plate of mining I steel.
Be being connected of the back timber 1 of this metallic support and post leg 2 to realize by the bracket 3 that is welded in post leg upper end.
In order to guarantee that the back timber active force always acts on the post leg axis, can not produce and depart from, the garden steel 7 of should burn-oning at the middle part of bracket 3.
In post leg 2 bottoms bottom pad plate with holes 8 is housed, can makes the post leg of this metallic support insert base plate,, make support reach the constant-resistance state so that the clamping force of clamp passes in base plate.
Insert bottom type contractibility metallic support is through test, and technical performance has all reached instructions for use, and with present employed metallic support compare have simple in structure, cost is low, set up and reclaim multiplexing convenience.Simultaneously not only have good contractibility but also have advantages of high bearing capacity, thereby solved high seam gob-side entry retaining support problem preferably.This kind metallic support is not only applicable to softer development heading of seat earth and gob side entry retaining tunnel, and is widely used in the top slice drift of thick seam slicing system.
Description of drawings:
Fig. 1: insert bottom type contractibility metallic support structural representation.
Fig. 2: clamp schematic diagram.
Fig. 3: fixture block schematic diagram.
Fig. 4: bracket schematic diagram.
Embodiment to insert bottom type contractibility metallic support is described further below in conjunction with accompanying drawing:
This metallic support is by clamp 4, bottom pad plate 8, with 11
Figure 87206911_IMG2
The a beam two pillar supports that mining I steel is made as material, its form of structure is referring to Fig. 1.
Ingenious and the novel part of insert bottom type contractibility metallic support just is that it allows post leg 2 and back timber 1 just to realize and can contract, and promptly by the effect of clamp 4, makes support realization roof and floor and two help two-way contracting after having born required load.The structure of clamp 4 is referring to Fig. 2, and it is made up of two fixture blocks 5 and two bolts 6, and fixture block 5 is trapezoidal cylinder bodies, and its two inclined-planes are just with 11
Figure 87206911_IMG3
The both wings of mining I steel match.Under the effect of bolt 6, between wing plate and fixture block inclined-plane, produce frictional resistance.The structure of fixture block 5 can be referring to Fig. 3.
With reference to Fig. 4 bracket 3 are links of post leg 2 and back timber 1, and this bracket 3 is hot-forming by a steel plate, welds a garden steel 7 after pressing therebetween, always act on post leg 2 axis to guarantee back timber 1 active force, can not produce and depart from.Bracket 3 finally is welded in the upper end of post leg 2, and its size should be able to make 11 Mining I steel is put into smoothly and is as the criterion.
In the bottom of post leg 2 bottom pad plate with holes 8 is housed, the vertical contractibility of this support is inserted base plate by post leg 2 and is realized.The clamp 4 that is clipped in post leg 2 bottoms directly is placed on the square bottom pad plate with holes 8.Bottom pad plate 8 stops clamp 4 to pass through to post leg 2 with resistance.When the vertical load of support passes to axial force on the leg greater than the frictional force between clamp and the post leg and when having overcome the anti-resistance that inserts of base plate, the relative clamp of post leg passes the holes of opening in the middle of the bottom pad plate 8 and inserts in the base plate rocks (coal) to lower slider.
The side direction of this support can contract to be to slide by the clamp 4 relative back timbers 2 that are installed in back timber 2 two and realize.The contact of beam leg is by being contained in clamp 4, back timber itself on the back timber, being welded in hinged the forming of bracket 3 threes of post leg 2 upper ends.The power that lateral pressure on acting on post leg 2 is delivered to the back timber clamp through bracket 3 is during greater than clamp 4 frictional force, and the relative together back timber with clamp 4 of post leg 2 slides in the lane, allows the purpose of pressing thereby reached to contract.

Claims (3)

1, a kind of insert bottom type contractibility metallic support, form by back timber 1, post leg 2, bracket 3 and clamp 4, it is characterized in that: had on back timber 1 and the post leg 2 to be connected and the clamp 4 of the effect of can contracting, clamp 4 is that the fixture block 5 by two trapezoidal cylinder bodies is formed by connecting through bolt 6, and two inclined-planes of fixture block just match with the i iron both wings, also have been welded with the bracket 3 of interconnect function in addition in the upper end of post leg 2.
2, by the described insert bottom type contractibility of claim 1 metallic support, it is characterized in that: bracket 3 middle parts are welded with and make back timber 1 active force always act on garden steel 7 on post leg 2 axis.
3, by the described insert bottom type contractibility of claim 1 metallic support, it is characterized in that: bottom pad plate with holes 8 is equipped with in post leg 2 bottoms.
CN 87206911 1987-04-29 1987-04-29 Insert bottom type contractable metal support Withdrawn CN87206911U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 87206911 CN87206911U (en) 1987-04-29 1987-04-29 Insert bottom type contractable metal support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 87206911 CN87206911U (en) 1987-04-29 1987-04-29 Insert bottom type contractable metal support

Publications (1)

Publication Number Publication Date
CN87206911U true CN87206911U (en) 1988-01-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 87206911 Withdrawn CN87206911U (en) 1987-04-29 1987-04-29 Insert bottom type contractable metal support

Country Status (1)

Country Link
CN (1) CN87206911U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102444414A (en) * 2010-10-09 2012-05-09 王传峰 Buckling member for I-steel tent
CN103924990A (en) * 2014-05-07 2014-07-16 刘允勇 High-intensity retractable support
CN110593875A (en) * 2019-09-26 2019-12-20 中国矿业大学 Gob-side entry driving method of grouting anchor cable based on full period of roadway service

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102444414A (en) * 2010-10-09 2012-05-09 王传峰 Buckling member for I-steel tent
CN102444414B (en) * 2010-10-09 2015-10-21 王传峰 Buckling member for I-steel tent
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
CN110593875A (en) * 2019-09-26 2019-12-20 中国矿业大学 Gob-side entry driving method of grouting anchor cable based on full period of roadway service

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