WO2016008205A1 - Support flexible rétractable dans un sens - Google Patents

Support flexible rétractable dans un sens Download PDF

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Publication number
WO2016008205A1
WO2016008205A1 PCT/CN2014/086250 CN2014086250W WO2016008205A1 WO 2016008205 A1 WO2016008205 A1 WO 2016008205A1 CN 2014086250 W CN2014086250 W CN 2014086250W WO 2016008205 A1 WO2016008205 A1 WO 2016008205A1
Authority
WO
WIPO (PCT)
Prior art keywords
pad
way
upper pad
energy
rigid plate
Prior art date
Application number
PCT/CN2014/086250
Other languages
English (en)
Chinese (zh)
Inventor
朱林学
朱红英
Original Assignee
朱林学
朱红英
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 朱林学, 朱红英 filed Critical 朱林学
Publication of WO2016008205A1 publication Critical patent/WO2016008205A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/56—Details of locks of telescopic props

Definitions

  • the utility model belongs to the technical field of coal mine roadway support, and relates to a one-way contraction elastic bracket It is mainly used for impact protection of U-shaped steel brackets in mining roadway of deep impact ground pressure mine.
  • the impact protection of deep mine roadway support mainly relies on bracket protection, while the existing U
  • the steel brackets have the advantages of simple support structure, large bearing capacity, fast increasing resistance, high support strength and high shrinkability. They are widely used in roadway surrounding rock instability, large deformation, and dynamic pressure. Greater impact
  • the coal mine mining roadway overcomes the non-shrinkable shortcomings of the rigid support. As the mining depth increases, the dynamic phenomena such as the impact pressure of the roadway increase, and when the impact pressure occurs, a large amount of impact energy is released, and the energy is transmitted through the medium in the form of a shock wave.
  • the support structure formed by the U-shaped steel bracket has a strong impact damage.
  • the supporting structure formed by the steel bracket not only can withstand the strong static load of the surrounding rock, but also bears the high speed and strong dynamic load generated by the impact ground pressure, while the existing U
  • the support structure composed of the steel bracket has poor impact resistance, and the lap joint connection method cannot achieve rapid shrinkage and pressure relief, so it is difficult to quickly relieve the pressure and not absorb the impact during the occurrence of the ground pressure. The energy released, so it is difficult to effectively resist the high-strength dynamic load generated by the impact pressure.
  • Chinese patent CN201310489010 an energy-absorbing and anti-shocking backing plate of a bracket, discloses an energy-absorbing and anti-backing backboard, in U Between the steel beam roof beam and the surrounding rock of the roadway, it has the characteristics of high strength, corrosion resistance, etc., and can quickly give way and absorb energy under dynamic load conditions.
  • the device uses the rapid compression of the gas in the air pressure cylinder and the relief pressure of the safety valve to release the overload pressure, so as to achieve the function of absorbing energy to ensure that the bearing capacity of the bracket is within the acceptable range during weak impact.
  • the bracket is protected from damage; in the moment when the strong impact ground pressure occurs, the gas in the air pressure anti-crushing cylinder is rapidly compressed, the energy absorption column quickly gives up the energy absorption, the energy absorption connecting beam deforms and absorbs energy, and the cone sleeve squeezes the expansion ring to enhance Its energy absorbing ability consumes shock wave energy and protects the bracket from impact damage.
  • the technical problem to be solved by the utility model is to provide a one-way contraction elastic bracket.
  • the dynamic load condition can quickly give way, absorb energy, and unidirectionally shrink, which is safe and reliable.
  • a one-way contraction elastic bracket including upper pad, energy absorption column, lower pad, pneumatic anti-crush cylinder , the snap ring, the connecting rod and the energy absorbing connecting beam are characterized in that: a unidirectional retracting device capable of hindering the relative movement of the upper and lower pads is arranged between the upper pad and the lower pad, and the upper and lower ends of the one-way retracting device are respectively connected through the rotating shaft
  • the upper lining plate and the lower lining plate comprise a sliding plate and a limit card
  • the limit card is used for limiting the retraction of the sliding plate
  • the sliding plate is provided with a continuous card slot
  • the limit card comprises a limiting shaft, an elastic limiting piece, a limit button, a shift lever and a wrench, comprising a rigid plate with protruding serrations respectively connected to the upper pad and the lower pad, wherein the rigid plate connected to the upper pad
  • the serrations are inclined upward, and the serrations of the rigid plates connected to the
  • the energy absorbing back plate absorbs most of the impact energy during the compression process, and can greatly reduce the effect on the U Impact energy on the steel bracket ensures the role of U
  • the load on the steel bracket is within its acceptable range, and after the impact, the energy-absorbing backboard is locked by the self-contained one-way contraction device, and the rebound of the surrounding rock is not repeated repeatedly, thereby ensuring the stability and safety of the roadway. .
  • the upper and lower pads move in the opposite direction under the action of the energy absorption column, and the one-way contraction device is driven to lock the phase movement of the upper and lower pads.
  • Figure 1 shows the structure of the sliding plate and the limit card.
  • Figure 2 is a schematic view of the structure of the sliding plate
  • Figure 3 is a schematic view of the structure of the limit piece
  • Figure 4 is a schematic diagram of the structure of the limit card
  • Figure 5 is an overall schematic view of the elastic sawtooth bracket
  • Figure 6 is a schematic view of the overall arrangement with a limited position card holder
  • a one-way contraction elastic support upper pad 1, energy absorption column 2, lower pad 5, pneumatic anti-crush cylinder 6 a snap ring 7, a connecting rod 3 and an energy absorbing connecting beam 4, and a unidirectional retracting device 10 capable of hindering the relative movement of the upper and lower pads is disposed between the upper pad 1 and the lower pad 5, and the upper and lower ends of the one-way retracting device 10 pass The rotating shaft 19 is respectively connected to the upper pad 1 and the lower pad 5.
  • the one-way retracting device 10 includes a sliding plate 11 and a limiting card 12 for limiting the retraction of the sliding plate 11, the sliding plate 11 A continuous card slot 13 is provided.
  • the limit card 12 includes a limiting shaft 14, an elastic limiting piece 15, a limit button 16, a shift lever 17, and a wrench 18.
  • the limiting shaft 14, the elastic limiting piece 15, the limiting key 16, and the wrench 18 are fixedly coupled together, and the rotation of the limiting shaft 14 drives the elastic limiting piece 15 to rotate, and the limiting key 16 is sharpened by the elastic limiting piece 15.
  • the edge, the pointed edge is the limit button 16, the width of the limit button 16 is matched with the width of the card slot 13, and the shift lever 17 is used to limit the rotation of the elastic limiting piece 15.
  • the wrench 18 When retracting to a certain extent, the wrench 18 is pulled, the limiting shaft 14 drives the limiting piece 15 to rotate, the limiting button 16 is disengaged from the card slot 13, and the sliding plate 11 is retracted and slid to the appropriate slot position limit. The key 16 enters the card slot 13 again, and the upper pad 1 returns to the uncompressed state.
  • the limiting shaft 14 simultaneously functions as a reinforcing limiting piece 15, and the shift lever 17 controls and defines the rotation amplitude of the limiting piece 15.
  • a one-way contraction elastic bracket including left and right upper pads 1, left and right energy absorption columns 2, left and right lower pads 5 , left and right air pressure cylinders 6, left and right snap rings 7, connecting rods 3 and energy absorbing connecting beams 4, upper rigid plates 8 with protruding serrations connected to the upper pad 1 and the lower pad 5 And lower rigid plate 9
  • the serrations of the rigid plate 8 are inclined upward, and the serrations of the rigid plate 9 are inclined downward, opposite to the serrations on the rigid plate 8.
  • the utility model is placed between the top beam of the U-shaped steel bracket and the surrounding rock of the roadway, and the left and right two lower backing plates 5 are respectively placed in the adjacent two U
  • the surrounding rock of the roadway acts on the upper backing plate 1 of the utility model, and the pressing upper backing plate 1 moves downward to provide a space for the deformation of the surrounding rock of the roadway to avoid excessive pressure on the roadway.
  • damage When an impact occurs, due to the better compressibility of the gas, the gas in the cylinder is rapidly compressed during impact, absorbs the impact energy and provides a space for the displacement, providing a space for the deformation of the surrounding rock.
  • Upper rigid plate with serrated protrusions 8 The lower rigid plate 9 is displaced in the forward direction by the relative movement of the saw teeth in opposite directions and close to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

L'invention concerne un support flexible rétractable dans un sens, concernant le domaine technique des supports de galerie de mine de charbon, et principalement utilisé pour un support en acier en forme de U dans des galeries d'extraction de mine profonde dotées de bossages de pression. Le support comprend une plaque de coussin supérieure (1), une entretoise d'absorption d'énergie (2), une plaque de coussin inférieure (5), un cylindre pneumatique anti-chocs (6), une bague d'enserrage (7), une tige de raccordement (3) et une poutre de liaison à absorption d'énergie (4). Entre la plaque de coussin supérieure (1) et la plaque de coussin inférieure (5), un dispositif de rétraction dans un sens (10) est prévu et peut arrêter le mouvement de séparation des plaques de coussin supérieure et inférieure. Le support présente les avantages d'une résistance mécanique et d'une résistance à la corrosion élevées, etc., il peut être rangé rapidement et absorbe l'énergie dans l'état de charge dynamique, et est sûr et fiable.
PCT/CN2014/086250 2014-07-12 2014-09-11 Support flexible rétractable dans un sens WO2016008205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2014203832753 2014-07-12
CN201420383275.3U CN203925534U (zh) 2014-07-12 2014-07-12 一种单向收缩的弹性支架

Publications (1)

Publication Number Publication Date
WO2016008205A1 true WO2016008205A1 (fr) 2016-01-21

Family

ID=51821363

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/086250 WO2016008205A1 (fr) 2014-07-12 2014-09-11 Support flexible rétractable dans un sens

Country Status (2)

Country Link
CN (1) CN203925534U (fr)
WO (1) WO2016008205A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107339124A (zh) * 2017-08-23 2017-11-10 山东科技大学 煤矿u型钢支架受力监测预警装置
CN109653775A (zh) * 2019-01-22 2019-04-19 湖南科技大学 一种可实现三维让压的缓冲支架及支护方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203925529U (zh) * 2014-07-12 2014-11-05 朱林学 一种单向收缩的吸能支架
CN109236339B (zh) * 2018-11-02 2024-02-27 陈成军 巷道吸振抗冲击支架
CN110171335B (zh) * 2019-06-12 2021-12-24 泰极爱思（郑州）汽车座椅研发有限公司 一种儿童安全座椅隐藏式防侧撞装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR731410A (fr) * 1932-01-13 1932-09-02 Samac S A étançon de tranchées
DE921683C (de) * 1951-11-20 1954-12-23 Gutehoffnungshuette Sterkrade Zahnstangenstempel
CN103541746A (zh) * 2013-10-16 2014-01-29 辽宁工程技术大学 一种支架的吸能防冲背板
CN203925529U (zh) * 2014-07-12 2014-11-05 朱林学 一种单向收缩的吸能支架
CN203925533U (zh) * 2014-07-12 2014-11-05 朱林学 一种单向背板的吸能支架

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR731410A (fr) * 1932-01-13 1932-09-02 Samac S A étançon de tranchées
DE921683C (de) * 1951-11-20 1954-12-23 Gutehoffnungshuette Sterkrade Zahnstangenstempel
CN103541746A (zh) * 2013-10-16 2014-01-29 辽宁工程技术大学 一种支架的吸能防冲背板
CN203925529U (zh) * 2014-07-12 2014-11-05 朱林学 一种单向收缩的吸能支架
CN203925533U (zh) * 2014-07-12 2014-11-05 朱林学 一种单向背板的吸能支架

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107339124A (zh) * 2017-08-23 2017-11-10 山东科技大学 煤矿u型钢支架受力监测预警装置
CN109653775A (zh) * 2019-01-22 2019-04-19 湖南科技大学 一种可实现三维让压的缓冲支架及支护方法
CN109653775B (zh) * 2019-01-22 2023-10-31 湖南科技大学 一种可实现三维让压的缓冲支架及支护方法

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Publication number Publication date
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