WO2020057366A1 - 一种矿井大吨位落煤缓冲箕斗 - Google Patents

一种矿井大吨位落煤缓冲箕斗 Download PDF

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Publication number
WO2020057366A1
WO2020057366A1 PCT/CN2019/104267 CN2019104267W WO2020057366A1 WO 2020057366 A1 WO2020057366 A1 WO 2020057366A1 CN 2019104267 W CN2019104267 W CN 2019104267W WO 2020057366 A1 WO2020057366 A1 WO 2020057366A1
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WIPO (PCT)
Prior art keywords
tonnage
bucket
plate
coal
lining
Prior art date
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PCT/CN2019/104267
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English (en)
French (fr)
Inventor
彭玉兴
朱真才
周公博
胡长华
杜庆永
卢昊
曹国华
刘送永
沈刚
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XUZHOU COAL MINE SAFETY EQUIPMENT MANUFACTURE CO Ltd
China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
Original Assignee
XUZHOU COAL MINE SAFETY EQUIPMENT MANUFACTURE CO Ltd
China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
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Application filed by XUZHOU COAL MINE SAFETY EQUIPMENT MANUFACTURE CO Ltd, China University of Mining and Technology CUMT, China University of Mining and Technology Beijing CUMTB filed Critical XUZHOU COAL MINE SAFETY EQUIPMENT MANUFACTURE CO Ltd
Priority to AU2019341184A priority Critical patent/AU2019341184B2/en
Priority to DE112019000229.5T priority patent/DE112019000229T5/de
Priority to US16/955,787 priority patent/US10988347B2/en
Publication of WO2020057366A1 publication Critical patent/WO2020057366A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/08—Mining skips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/14—Applications of loading and unloading equipment
    • B66B17/26—Applications of loading and unloading equipment for loading or unloading mining-hoist skips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/02—Materials; Material properties solids
    • F16F2224/0208—Alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2236/00—Mode of stressing of basic spring or damper elements or devices incorporating such elements
    • F16F2236/04—Compression

Definitions

  • the invention relates to a large-tonnage coal fall buffer bucket of a mine, which is suitable for loading a large-tonnage bucket of coal fall buffer and shock absorption, and can be easily disassembled and replaced.
  • the bucket is the main equipment for the mine to lift coal and other mineral resources, and completes the lifting and transportation of coal and other mineral resources from underground to the ground.
  • the lifting load of the mine hoist bucket is also increasing, and the safety and reliability of the large-tonnage bucket directly affects the mine's enhanced transportation safety.
  • the side wall and bottom lining of the large tonnage bucket are subjected to direct impact friction of minerals such as coal blocks and vermiculite.
  • the load and working conditions are extremely bad, which exacerbates the lining wear and seriously reduces the bucket's Service life.
  • the purpose of the present invention is to overcome the deficiencies in the prior art and provide a new large-tonnage coal fall buffer bucket with simple structure and safe and convenient operation.
  • a large-tonnage coal fall buffer bucket includes a large-tonnage bucket, a loading bucket is installed on the top of the large-tonnage bucket, and at least one coal-falling buffer device is arranged on the inner bucket wall of the large-tonnage bucket.
  • the coal fall buffer device includes:
  • the liner guide frame is connected to the frame through a shock absorber, and the liner guide frame is provided with a guide chute;
  • the lining board bracket is slidingly embedded in the guide chute of the lining board guide frame, and the top of the lining board bracket is provided with lifting ears for lifting;
  • the backing plate is detachably connected to the backing plate bracket through a fastener.
  • the coal falling buffer device includes at least two, one on the inner bucket wall on the side opposite to the discharge opening of the loading bucket in the large tonnage bucket, and one on the bottom of the large tonnage bucket.
  • the frame includes a horizontal plate and a vertical plate that are fixedly connected, and the upper and lower ends of the vertical plate are fixedly connected to the hoist bucket by fasteners, respectively.
  • the connection between the horizontal plate and the vertical plate is provided to strengthen the frame. Strength ribs.
  • the shock absorber is a wire rope shock absorber, and the wire rope shock absorber includes three.
  • the vertical plate and the lining plate guide frame two symmetrically arranged vertically on the left and right sides of the vertical plate are provided.
  • One is horizontally provided between the horizontal plate and the bottom of the lining plate guide frame.
  • the two sides of the front part of the lining board guide frame are provided with a guide chute having a concave structure, and the guide chute is used to provide a track for the lining board support to move up and down.
  • the backing plate bracket includes an “L” -shaped structural plate and an upper horizontal plate located at an upper portion of the “L” -shaped structural plate, and the first horizontal plate is provided with a plurality of first threaded holes at equal intervals;
  • a second threaded hole is provided at a position of the top end of the lining plate corresponding to the first threaded hole on the upper horizontal plate;
  • the fastener is a bolt, and the threaded end of the bolt passes through the first threaded hole and the second threaded hole in order to fixedly connect the backing plate and the backing plate bracket.
  • a compression spring for loosening prevention is inserted between the nut end of the bolt and the horizontal plate on the backing plate bracket.
  • the present invention combines a large-tonnage bucket to load coal fall conditions, and proposes to use a steel wire rope shock absorber to connect the lining plate to achieve the function of shock absorption and buffer, so that the large-tonnage bucket is more stable during loading.
  • the rigidity coefficient of the steel wire rope damper is non-constant.
  • the rigidity coefficient increases with the increase of the lateral vibration.
  • the buffering effect of the steel wire rope damper is very obvious when subjected to large lateral vibration.
  • the invention makes full use of the steel wire rope to reduce the vibration.
  • the device has excellent vibration isolation and impact resistance performance. It is designed to effectively alleviate the impact wear and tear of the bucket liner caused by falling coal impact when loading large tonnage buckets, prolong the service life of large tonnage buckets, and improve mine production efficiency.
  • the coal fall buffer device can effectively alleviate the impact wear and damage of the bucket liner under the loading condition of the coal fall, meanwhile, it can realize the rapid replacement of the damaged liner, prolong the life of the bucket, and improve the coal mine production efficiency.
  • the coal falling buffer device of the present invention has a simple structure, a suitable device size, and convenient assembly.
  • the coal falling buffer device of the present invention can be flexibly installed and arranged on the side of the hoisting bucket, such as the side wall and the bottom of the coal falling heavy load impact, and is convenient to install and disassemble.
  • FIG. 1 is a schematic front view of a large-tonnage coal-falling buffer bucket falling coal-buffering device according to the present invention.
  • FIG. 2 is a schematic left side view of the large-tonnage coal fall buffer bucket fall coal fall buffer device of the present invention.
  • FIG. 3 is a schematic top view of a large-tonnage coal fall buffer bucket fall coal fall buffer device of the present invention.
  • FIG. 4 is a front view of a lining board guide in a large-tonnage coal fall buffer bucket fall coal fall buffer device of the present invention.
  • FIG. 5 is a top view of a lining guide in a large-tonnage coal fall buffer bucket fall coal fall buffer device of the present invention.
  • FIG. 6 is a front view of a lining plate support in a large-tonnage coal fall buffer bucket fall coal fall buffer device of the present invention.
  • FIG. 7 is a left side view of the lining board support in the large-tonnage coal fall buffer bucket fall coal fall buffer device of the present invention.
  • FIG. 8 is a schematic diagram of the installation of the large-tonnage coal fall buffer bucket falling coal buffer device on the left wall and the bottom of the bucket.
  • a large-tonnage coal fall buffer bucket of a mine includes a loading bucket box 14, a large-tonnage bucket 12, and a coal fall buffer device 13, and the coal fall buffer device 13 is fixed to the large tonnage with bolts.
  • the landing place of the side wall and bottom of the bucket 12 is mainly composed of a frame 1, a wire rope shock absorber 2, a lining board bracket 4, a lining board 5, a lining board guide 6, a bolt 7, a compression spring 8, and a lifting ear 9 .
  • the lining guide frame 6 is fixedly connected to the frame 1 through a wire rope shock absorber 2.
  • the lining plate bracket 4 is slidably embedded in the groove of the lining plate guide frame 6.
  • the lining plate 5 is clamped and fastened in the lining plate bracket 4 via bolts 7.
  • Lifting ears 9 are welded on the upper end of the backing plate bracket 4.
  • the coal fall buffer device 13 includes two, one is bolted to the side wall of the large tonnage bucket 12 and the other is fixed to the bottom of the inside of the large tonnage bucket with bolts. Buffering the impact of large-particle falling coal on the side wall and the bottom plate of the large-tonnage hopper 12 to improve the loading stability of the large-tonnary hopper 12, slowing down the damage of the large-tonnary hopper 12, and prolonging the service life of the large-tonnary hopper 12.
  • the frame 1 is mainly formed by welding two plates of a horizontal plate and a vertical plate vertically; a rib plate 3 is welded at the junction between the horizontal plate and the vertical plate to strengthen the frame 1.
  • the upper end of the vertical plate of the frame 1 is provided with through holes for fixing the frame 1 and the large-tonnage bucket.
  • one end of the wire rope vibration damper 2 is respectively bolted to the left and right sides of the vertical plate of the rack 1 and the upper side of the horizontal plate, and the other end is correspondingly fastened to the lining plate.
  • the two sides of the front part of the lining guide frame 6 are “concave” -type chute for providing the lining board support 4 with a track for upward and downward movement.
  • the lining board bracket 4 in this embodiment 1 is mainly made by welding an “L” -shaped structural plate and a horizontal plate; the horizontal plate on the lining board bracket 4 is provided with five threaded holes, and at the same time, Two lifting ears 9 are symmetrically fixed at the upper end of the upper horizontal plate, and are used for lifting and dismounting the lining plate support 4.
  • the above-mentioned coal fall buffer device 13 of the present invention is fixed on the side wall and bottom of the large-tonnage bucket 12 at the landing position of the coal; if the liner 5 is damaged by impact, the liner bracket 4 can be lifted from the liner by the lifting ears 9 The guide frame 6 is lifted out of the "concave” chute, and the bolt 7 is loosened to complete the installation and replacement of the lining plate 5.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chutes (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Vibration Dampers (AREA)

Abstract

公开了一种矿井大吨位落煤缓冲箕斗，大吨位箕斗（12）的顶部安装有装载斗箱（14），大吨位箕斗（12）内侧斗壁上设有落煤缓冲装置（13），落煤缓冲装置（13）包括：机架（1），与大吨位箕斗（12）内侧斗壁固定连接；衬板导向架（6），通过减振器（2）与机架（1）连接，衬板导向架（6）上设有导向滑槽；衬板支架（4），滑动嵌设在衬板导向架（6）上的导向滑槽内，衬板支架（4）的顶端设有用于吊装的吊耳（9）；衬板（5），通过紧固件（7）与衬板支架（4）可拆卸地连接。该大吨位落煤缓冲箕斗可有效缓解落煤装载工况下大吨位箕斗衬板的冲击磨损破坏，可实现损坏衬板的快速拆换，延长大吨位箕斗使用寿命，提高煤矿生产效率。

Description

一种矿井大吨位落煤缓冲箕斗 技术领域
本发明涉及一种矿井大吨位落煤缓冲箕斗，适用于矿井大吨位箕斗装载落煤缓冲、减震，并可方便拆换落煤缓冲装置。
背景技术
箕斗是矿井提升煤炭等矿产资源的主要设备，完成煤炭等矿产资源从井下到地面的提升运输。随着矿井大型化发展，矿用提升箕斗的提升载荷也随之增大，大吨位箕斗运行安全可靠性直接影响矿井提升运输安全。在实际提升工况中，大吨位箕斗侧壁及底部衬板承受着煤块、矸石等矿物的直接冲击摩擦，所受载荷及工况极其恶劣，加剧了衬板磨损，严重降低箕斗的服役寿命。
在日常生产中，矿井提升大吨位箕斗衬板因冲击损坏而频繁维修更换，而目前矿井广泛使用的大吨位提升箕斗衬板往往直接固定焊接于箕斗侧壁，衬板的频繁维修更换必然会造成提升箕斗报废停机，浪费大量的物力财力，直接影响矿井的开采效率。
发明内容
本发明的目的是为了克服现有技术中的不足之处，提供一种结构简单、操作安全方便的新型大吨位落煤缓冲箕斗。
本发明的目的是通过以下技术方案来实现的：
一种矿井大吨位落煤缓冲箕斗，包括：大吨位箕斗，大吨位箕斗的顶部安装有装载斗箱，大吨位箕斗内侧斗壁上设有至少一个落煤缓冲装置，每个所述落煤缓冲装置包括：
机架，用于与大吨位箕斗内侧斗壁固定连接；
衬板导向架，通过减振器与机架连接，衬板导向架上设有导向滑槽；
衬板支架，滑动嵌设在衬板导向架的导向滑槽内，衬板支架的顶端设有用于吊装的吊耳；
衬板，与所述衬板支架之间通过紧固件可拆卸地连接。
所述落煤缓冲装置包括至少两个，分别是位于大吨位箕斗内相对装载斗箱出料口一侧内侧斗壁上的一个、以及位于大吨位箕斗内底部落煤着落处的一个。
所述机架包括固定连接的水平板和竖直板，竖直板的上、下两端分别通过紧固件与提升箕斗固定连接，水平板和竖直板连接处设有用于加强机架强度的筋板。
所述减振器为钢丝绳减振器，所述钢丝绳减振器包括三个，其中，在所述竖直板和衬板导向架之间位于竖直板的左右两侧竖向对称设有两个，在水平板和衬板导向架底部之间 横向设有一个。
所述衬板导向架前部两侧设有呈内凹结构的导向滑槽，导向滑槽用以为衬板支架提供上、下滑移的轨道。
所述衬板支架包括“L”型结构板和位于“L”型结构板上部的上水平板，所述上水平板上等间距的布设有多个第一螺纹孔；
所述衬板的顶端对应所述上水平板上第一螺纹孔的位置设有第二螺纹孔；
所述紧固件为螺栓，螺栓的螺纹端依次穿过第一螺纹孔、第二螺纹孔将衬板和衬板支架之间固定连接。
螺栓的螺母端与衬板支架上水平板之间穿插有防松用的压缩弹簧。
本发明结合钢丝绳减振器创新设计出一种矿井大吨位落煤缓冲箕斗，具有以下有益效果：
(1)与现有技术相比，本发明结合大吨位箕斗装载落煤工况，提出用钢丝绳减振器连接衬板达到减震缓冲的作用，使大吨位提升箕斗在装载时更加平稳；钢丝绳减振器的刚性系数为非定值，刚性系数随横向振动的增大而增大，在承受较大的横向振动时钢丝绳减振器的缓冲效果十分明显，本发明充分利用钢丝绳减振器优异的隔震和抗冲击性能，设计出一种能够有效缓解大吨位箕斗装载时落煤冲击导致的箕斗衬板冲击磨损破坏，延长大吨位箕斗使用寿命，提高矿井生产效率。
(2)该落煤缓冲装置可有效缓解落煤装载工况下箕斗衬板的冲击磨损破坏，同时可实现损坏衬板的快速拆换，延长箕斗使用寿命，提高煤矿生产效率。
(3)本发明落煤缓冲装置结构简单，装置尺寸合适，组装方便。
(4)本发明落煤缓冲装置可灵活安装布置于提升箕斗侧壁、底部等落煤重载冲击处，安装拆卸方便。
附图说明
下面结合附图对本发明的具体实施方式作进一步详细的说明，其中：
图1为本发明大吨位落煤缓冲箕斗落煤缓冲装置的正视示意图。
图2为本发明大吨位落煤缓冲箕斗落煤缓冲装置的左视示意图。
图3为本发明大吨位落煤缓冲箕斗落煤缓冲装置的俯视示意图。
图4为本发明大吨位落煤缓冲箕斗落煤缓冲装置中衬板导向架的正视图。
图5为本发明大吨位落煤缓冲箕斗落煤缓冲装置中衬板导向架的俯视图。
图6为本发明大吨位落煤缓冲箕斗落煤缓冲装置中衬板支架的正视图。
图7为本发明大吨位落煤缓冲箕斗落煤缓冲装置中衬板支架的左视图。
图8为本发明大吨位落煤缓冲箕斗落煤缓冲装置在箕斗左侧壁及底部的安装示意图。
图中：1、机架；(2，10)、钢丝绳减振器；3、筋板；4、衬板支架；5、衬板；6、衬板导向架；7、螺栓；8、压缩弹簧；9、吊耳；12、大吨位箕斗；13、落煤缓冲装置；14、装载斗箱。
具体实施方式
以下结合具体实施例，对本发明进行详细说明。
实施例1
如图1至图7所示为一种矿井大吨位落煤缓冲箕斗，包括装载斗箱14、大吨位箕斗12和落煤缓冲装置13，落煤缓冲装置13用螺栓固定于大吨位箕斗12侧壁及底部落煤着落处，其主要由机架1、钢丝绳减振器2、衬板支架4、衬板5、衬板导向架6、螺栓7、压缩弹簧8、吊耳9组成。
衬板导向架6通过钢丝绳减振器2与机架1固定连接，衬板支架4滑动镶嵌于衬板导向架6凹槽内，衬板5经由螺栓7夹持紧固于衬板支架4内，衬板支架4上端焊接有吊耳9。
如图8至图9所示，落煤缓冲装置13包括两个，分别是用螺栓固定于大吨位箕斗12侧壁的一个及用螺栓固定于大吨位箕斗内底部落煤着落处，以缓冲大颗粒落煤对大吨位箕斗12侧壁及底板的冲击，提高大吨位箕斗12装载的稳定性，减缓大吨位箕斗12损坏，延长大吨位箕斗12使用寿命。
如图1至图3所示，机架1主要由水平板和竖直板两板件垂直焊接而成；水平板和竖直板下方相接处焊接有筋板3，用于加强机架1的强度；机架1竖直板上下端分别开设有通孔，用于将机架1与大吨位箕斗固定。
如图1至图3所示，本发明实施例1中，钢丝绳减振器2一端分别用螺栓固定于机架1竖直板左右两侧及水平板上侧，另一端对应紧固于衬板导向架6后端左右两侧及下侧。
如图4至图5所示，衬板导向架6前部两侧为“凹”型滑槽，用以为衬板支架4提供上、下滑移的轨道。
如图6至图7所示，本实施例1中衬板支架4主要由“L”型结构板件和水平板焊接制成；衬板支架4上水平板攻设有五个螺纹孔，同时其上水平板上端对称固定有两吊耳9，用于吊装及拆卸衬板支架4。
使用过程中，将上述本发明的落煤缓冲装置13固定在大吨位箕斗12侧壁及底部落煤着落处；若衬板5冲击损坏，可利用吊耳9将衬板支架4从衬板导向架6“凹”型滑槽中提升吊出，调松螺栓7，完成衬板5的安装更换。
以上所述仅是本发明的优选实施方式，应当指出：对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (7)

  1. 一种矿井大吨位落煤缓冲箕斗，包括：大吨位箕斗，大吨位箕斗的顶部安装有装载斗箱，大吨位箕斗内侧斗壁上设有至少一个落煤缓冲装置，其特征在于，每个所述落煤缓冲装置包括：
    机架，用于与大吨位箕斗内侧斗壁固定连接；
    衬板导向架，通过减振器与机架连接，衬板导向架上设有导向滑槽；
    衬板支架，滑动嵌设在衬板导向架的导向滑槽内，衬板支架的顶端设有用于吊装的吊耳；
    衬板，与所述衬板支架之间通过紧固件可拆卸地连接。
  2. 根据权利要求1所述的矿井大吨位落煤缓冲箕斗，其特征在于，所述落煤缓冲装置包括至少两个，分别是位于大吨位箕斗内相对装载斗箱出料口一侧内侧斗壁上的一个、以及位于大吨位箕斗内底部落煤着落处的一个。
  3. 根据权利要求1所述的矿井大吨位落煤缓冲箕斗，其特征在于，所述机架包括固定连接的水平板和竖直板，竖直板的上、下两端分别通过紧固件与提升箕斗固定连接，水平板和竖直板连接处设有用于加强机架强度的筋板。
  4. 根据权利要求3所述的矿井大吨位落煤缓冲箕斗，其特征在于，所述减振器为钢丝绳减振器，所述钢丝绳减振器包括三个，其中，在所述竖直板和衬板导向架之间位于竖直板的左右两侧竖向对称设有两个，在水平板和衬板导向架底部之间横向设有一个。
  5. 根据权利要求1所述的矿井大吨位落煤缓冲箕斗，其特征在于，所述衬板导向架前部两侧设有呈内凹结构的导向滑槽，导向滑槽用以为衬板支架提供上、下滑移的轨道。
  6. 根据权利要求1所述的矿井大吨位落煤缓冲箕斗，其特征在于：所述衬板支架包括“L”型结构板和位于“L”型结构板上部的上水平板，所述上水平板上等间距的布设有多个第一螺纹孔；
    所述衬板的顶端对应所述上水平板上第一螺纹孔的位置设有第二螺纹孔；
    所述紧固件为螺栓，螺栓的螺纹端依次穿过第一螺纹孔、第二螺纹孔将衬板和衬板支架之间固定连接。
  7. 根据权利要求6所述的矿井大吨位落煤缓冲箕斗，其特征在于：螺栓的螺母端与衬板支架上水平板之间穿插有防松用的压缩弹簧。
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