CN114408828A - Underground inclined roadway high-altitude elevator - Google Patents

Underground inclined roadway high-altitude elevator Download PDF

Info

Publication number
CN114408828A
CN114408828A CN202210057145.XA CN202210057145A CN114408828A CN 114408828 A CN114408828 A CN 114408828A CN 202210057145 A CN202210057145 A CN 202210057145A CN 114408828 A CN114408828 A CN 114408828A
Authority
CN
China
Prior art keywords
hinged
guide plate
inclined roadway
claw
connecting rod
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.)
Pending
Application number
CN202210057145.XA
Other languages
Chinese (zh)
Inventor
韩晓明
薛刘冰
徐进
刘炳余
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.)
Henan University of Technology
Original Assignee
Henan University of Technology
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 Henan University of Technology filed Critical Henan University of Technology
Priority to CN202210057145.XA priority Critical patent/CN114408828A/en
Publication of CN114408828A publication Critical patent/CN114408828A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/042Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations actuated by lazy-tongs mechanisms or articulated levers

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

本发明公开了一种井下倾斜巷道高空升降机,涉及煤矿井下倾斜巷道中的道轨式高空升降设备,包括矿用平板车、升降作业机、遥控器、液压站、电源、电控箱和爪式稳定器;其中,升降作业机由底部基座、剪叉臂、升举液压缸、顶部基座、作业平台、顶杆、螺母套、丝杠和液压马达组成;爪式稳定器由液压缸、左侧固定导向板、右侧固定导向板、后连杆、铰接导向销轴、前连杆、前卡爪、铰接固定销轴和后卡爪组成。本设备能够稳固在井下倾斜巷道的轨道上,调整作业平台始终处于水平状态,防止高空升降机在偏载及位于倾斜的轨道上时发生侧翻或倾覆,防止人员、工具及材料发生滑落现象,提高井下倾斜巷道顶部设备的安装及日常运行维护检修作业的机械化程度,降低作业人员的劳动强度,提高工作效率。

Figure 202210057145

The invention discloses an underground inclined roadway high-altitude elevator, which relates to a rail-type high-altitude elevator in a coal mine's underground inclined roadway, including a mining flatbed truck, a lifting operation machine, a remote control, a hydraulic station, a power supply, an electric control box and a claw-type stabilizer Among them, the lifting machine consists of a bottom base, a scissor arm, a lifting hydraulic cylinder, a top base, a working platform, a mandrel, a nut sleeve, a lead screw and a hydraulic motor; the claw stabilizer is composed of a hydraulic cylinder, a left The side fixed guide plate, the right fixed guide plate, the rear connecting rod, the hinged guide pin, the front connecting rod, the front claw, the hinged fixed pin and the rear claw are composed. The equipment can be stabilized on the track of the underground inclined roadway, and the working platform can always be adjusted to be in a horizontal state, so as to prevent the high-altitude elevator from rolling over or overturning when it is eccentrically loaded and on the inclined track, preventing personnel, tools and materials from slipping and falling. The mechanization of the installation of the equipment on the top of the underground inclined roadway and the daily operation, maintenance and repair operations reduces the labor intensity of the operators and improves the work efficiency.

Figure 202210057145

Description

Underground inclined roadway high-altitude elevator
Technical Field
The invention relates to the technical field of underground coal mine high-altitude lifting equipment, in particular to rail type high-altitude lifting equipment for an inclined roadway in a coal mine.
Background
Various types of equipment are often installed at the top of an inclined roadway in a coal mine, for example, relevant equipment of an overhead manned device is installed at the top of the inclined roadway of an underground auxiliary transportation inclined roadway, and meanwhile, a large amount of equipment such as an equipment power supply system, an underground lighting system, a water supply and drainage pipeline system and a gas drainage pipeline system are also installed at the top of the underground inclined roadway. In the process of installation or daily operation, maintenance and overhaul of the equipment, various overhead working trucks used on the ground are not suitable for running and working in inclined roadways in coal mines due to the limited width of the inclined roadways. However, because the installation position of the equipment in the inclined roadway is high, a large amount of time is needed for operators to set up a scaffold or a herringbone ladder, and installation or daily operation, maintenance and repair operations are performed under the condition that safety protection measures are well taken, so that a large number of operators are assisted, and the labor intensity of workers is high. Moreover, when the installation or daily operation, maintenance and overhaul operations are carried out on equipment at different positions in the inclined roadway, the scaffold or the herringbone ladder needs to be continuously moved or re-erected, the erection workload is large, the working efficiency is low, and the operation safety is poor.
Disclosure of Invention
The invention provides a track type high-altitude elevator, aiming at the problems of installation, daily operation, maintenance and repair of equipment at the top of an inclined roadway in a coal mine. The high-altitude lift can conveniently and quickly reach the operation site for installation, maintenance and overhaul of the equipment at the top of the underground inclined roadway under the traction of the inclined roadway winch, and lifts an operator, an overhaul tool and a use material to a proper height after the operation platform is leveled, so that the installation, daily operation, maintenance and overhaul of the equipment at the top of the inclined roadway can be conveniently carried out.
The specific technical scheme is as follows: an underground inclined roadway high-altitude elevator comprises a mining flat car, an elevating operation machine, a remote controller, a hydraulic station, a power supply, an electric cabinet and a claw type stabilizer; the lifting operation machine consists of a bottom base, a scissor arm, a lifting hydraulic cylinder, a top base, an operation platform, a top rod, a nut sleeve, a lead screw and a hydraulic motor; the claw type stabilizer consists of a hydraulic cylinder, a left side fixed guide plate, a right side fixed guide plate, a rear connecting rod, a hinged guide pin shaft, a front connecting rod, a front clamping jaw, a hinged fixed pin shaft and a rear clamping jaw.
Two ends of a lead screw of the lifting operation machine are hinged below the top base, and the hydraulic motor is fixed on one side below the top base and fixedly connects an output shaft of the hydraulic motor with the lead screw; the nut sleeve is connected with the lead screw in a thread fit way; one end of the ejector rod is hinged with the nut sleeve, and the other end of the ejector rod is hinged with the middle part of the operation platform; one side below the operation platform is hinged with the same side of the top base; the scissor arms can be combined in a plurality of groups such as two groups, three groups, four groups, five groups and the like; the corresponding lifting hydraulic cylinders can be in a combination of one pair, two pairs, three pairs and more pairs.
The claw type stabilizer consists of a hydraulic cylinder, a left fixed guide plate, a right fixed guide plate, a rear connecting rod, a hinged guide pin shaft, a front connecting rod, a front clamping jaw, a hinged fixed pin shaft and a rear clamping jaw; the upper end parts of the cylinder body of the hydraulic cylinder, the left fixed guide plate and the right fixed guide plate are respectively fixedly connected with the flat car by bolts; a piston rod of the hydraulic cylinder is hinged with the upper ends of the front connecting rod and the rear connecting rod by a hinged guide pin shaft, and two ends of the hinged guide pin shaft are respectively positioned in a guide clamping groove of the left fixed guide plate and a guide clamping groove of the right fixed guide plate; the front clamping jaw and the rear clamping jaw are respectively hinged with the lower ends of the front connecting rod and the rear connecting rod through respective upper hinge holes; the lower hinge holes of the front clamping jaw and the rear clamping jaw are hinged between the left fixed guide plate and the right fixed guide plate through a hinged fixed pin shaft.
The hydraulic station, the power supply, the electric cabinet and the lifting operation machine are respectively fixed on the mining flat car; the four claw type stabilizers are respectively fixed at four corners of the mining flat car, so that central lines of the four claw type stabilizers are respectively vertically aligned with the tracks fixed on the bottom plate of the inclined roadway, and the front claw and the rear claw keep proper distances from the tracks.
The invention has the advantages that the underground inclined roadway high-altitude elevator can conveniently and quickly reach an operation site for installation, maintenance and overhaul of equipment at the top of the underground inclined roadway under the traction of an inclined roadway winch, the inclined roadway high-altitude elevator is clamped and fixed on a track of the inclined roadway by using the claw type stabilizer, the high-altitude elevator is prevented from turning over or overturning when being eccentrically loaded and positioned on the inclined track, meanwhile, the high-altitude elevator can adjust the operation platform to be always kept in a horizontal state when working on the track of the inclined roadway, the operation personnel, the maintenance tools and the used materials are lifted to a proper height, and the sliding phenomenon of the personnel, the tools and the materials is prevented, so that the installation and the daily operation, maintenance and overhaul of the equipment at the top of the inclined roadway are conveniently carried out.
The invention has simple structure and convenient movement on the track of the underground inclined roadway, can firmly stabilize the overhead hoist on the track of the inclined roadway after the overhead hoist of the inclined roadway reaches an operation place, prevents the overhead hoist from turning over or overturning, ensures that the operation platform is always kept in a horizontal state when used on the track of the inclined roadway, prevents personnel, tools and materials from sliding off, ensures the safety of the operation personnel, improves the mechanization degree of the installation and daily operation maintenance operation of equipment at the top of the inclined roadway, reduces the operation personnel, reduces the labor intensity of the operation personnel, improves the working efficiency of the installation and maintenance operation of the equipment at the top of the inclined roadway, and reduces the production cost of enterprises.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the lifting work machine of the present invention.
Fig. 3 is a schematic structural diagram of the claw stabilizer of the present invention.
Fig. 4 is a schematic structural view of the jaw of the present invention.
Detailed Description
As shown in fig. 1, 2, 3 and 4, the underground inclined roadway high-altitude elevator comprises a mining flat car 1, an elevating operation machine 2, a remote controller 3, a hydraulic station 4, a power supply 5, an electric cabinet 6 and a claw type stabilizer 7; the lifting working machine 2 consists of a bottom base 21, a scissor arm 22, a lifting hydraulic cylinder 23, a top base 24, a working platform 25, a push rod 26, a nut sleeve 27, a lead screw 28 and a hydraulic motor 29; the claw type stabilizer 7 is composed of a hydraulic cylinder 71, a left side fixed guide plate 72, a right side fixed guide plate 73, a rear connecting rod 74, a hinged guide pin shaft 75, a front connecting rod 76, a front claw 77, a hinged fixed pin shaft 78 and a rear claw 79.
Two ends of a screw 28 of the lifting working machine 2 are hinged below the top base 24, a hydraulic motor 29 is fixed on one side below the top base 24, and an output shaft of the hydraulic motor 29 is fixedly connected with the screw 28; the nut sleeve 27 is connected with the lead screw 28 in a thread fit way; one end of the mandril 26 is hinged with the nut sleeve 27, and the other end is hinged with the middle part of the operation platform 25; one side below the working platform 25 is hinged with the same side of the top base 24; the scissor arms 22 can be in the form of a combination of two, three, four, five, etc. groups; the respective lifting cylinders 23 may be in the form of a combination of one, two, three, etc. pairs.
The cylinder body of the hydraulic cylinder 71 of the claw type stabilizer 7, the upper end parts of the left fixed guide plate 72 and the right fixed guide plate 73 are fixedly connected with the flat car 1 through bolts respectively; a piston rod of the hydraulic cylinder 71 is hinged with the upper ends of the front connecting rod 76 and the rear connecting rod 74 by a hinged guide pin shaft 75, and two ends of the hinged guide pin shaft 75 are respectively positioned in a guide clamping groove 721 of the left fixed guide plate 72 and a guide clamping groove 731 of the right fixed guide plate 73; the front jaw 77 and the rear jaw 79 are respectively hinged with the lower ends of the front connecting rod 76 and the rear connecting rod 74 through respective upper hinge holes 101; the lower hinge holes 102 of the front and rear jaws 77 and 79 are hinge-coupled between the left and right fixed guide plates 72 and 73 by the hinge fixing pin 78.
The hydraulic station 4, the power supply 5, the electric cabinet 6 and the lifting operation machine 2 are respectively fixed on the mining flat car 1; four claw stabilizers 7 are respectively fixed at four corners of the mining flat car 1 such that center lines of the four claw stabilizers 7 are respectively vertically aligned with rails 8 fixed on the floor of the inclined roadway, and such that front claws 77 and rear claws 79 are kept at appropriate distances from the rails 8.
When the equipment at the top of the inclined roadway in the coal mine needs to be installed or maintained and overhauled, the inclined roadway high-altitude elevator is dragged to an operation place under the traction of an inclined roadway winch, the power supply 5 supplies power to the electric cabinet 6 and the hydraulic station 4, and the remote controller 3 controls the hydraulic station 4 to supply and discharge liquid to the lifting hydraulic cylinder 23, the hydraulic motor 29 and the hydraulic cylinder 71, so that corresponding mechanisms complete corresponding actions. Firstly, the hydraulic cylinder 71 extends the piston rod, so that the front claws 77 and the rear claws 79 of the four claw stabilizers 7 respectively clamp and fix the rails 8 on the inclined roadway bottom plate, and the high-altitude lift is stabilized on the rails 8; the hydraulic motor 29 is used for driving the screw rod 28 to rotate, the ejector rod 26 hinged with the nut sleeve 27 jacks up the working platform 25 through the threaded matching of the screw rod 28 and the nut sleeve 27, the working platform 25 is adjusted to be in a horizontal state, and an operator carries tools and materials to enter the working platform 25; the lifting operation machine 2 is driven to move by extending the piston rod of the lifting hydraulic cylinder 23 outwards, the operation platform 25 is lifted to a proper operation height, and the operation personnel can conveniently carry out installation, maintenance and overhaul operations on equipment at the top of the inclined roadway. After completion of the work, the operations are performed in the reverse order of the above operations, and the return, the neutral, and the lowering of the work platform 25 and the releasing operation of the claw stabilizer 7 are completed.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "center", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the scope of the present invention.

Claims (4)

1. The utility model provides an inclined roadway high altitude lift in pit which characterized in that: the device comprises a mining flat car, a lifting operation machine, a remote controller, a hydraulic station, a power supply, an electric cabinet and a claw type stabilizer; the lifting operation machine consists of a bottom base, a scissor arm, a lifting hydraulic cylinder, a top base, an operation platform, a top rod, a nut sleeve, a lead screw and a hydraulic motor; the claw type stabilizer consists of a hydraulic cylinder, a left side fixed guide plate, a right side fixed guide plate, a rear connecting rod, a hinged guide pin shaft, a front connecting rod, a front clamping jaw, a hinged fixed pin shaft and a rear clamping jaw.
2. The underground inclined roadway high-altitude elevator as claimed in claim 1, wherein: two ends of a lead screw of the lifting operation machine are hinged below the top base, and the hydraulic motor is fixed on one side below the top base and fixedly connects an output shaft of the hydraulic motor with the lead screw; the nut sleeve is connected with the lead screw in a thread fit way; one end of the ejector rod is hinged with the nut sleeve, and the other end of the ejector rod is hinged with the middle part of the operation platform; one side below the operation platform is hinged with the same side of the top base; the scissor arms can be combined in a plurality of groups such as two groups, three groups, four groups, five groups and the like; the corresponding lifting hydraulic cylinders can be in a combination of one pair, two pairs, three pairs and more pairs.
3. The underground inclined roadway high-altitude elevator as claimed in claim 1, wherein: the upper end parts of a cylinder body of a hydraulic cylinder of the claw type stabilizer, the left fixed guide plate and the right fixed guide plate are respectively fixedly connected with the flat car by bolts; a piston rod of the hydraulic cylinder is hinged with the upper ends of the front connecting rod and the rear connecting rod by a hinged guide pin shaft, and two ends of the hinged guide pin shaft are respectively positioned in a guide clamping groove of the left fixed guide plate and a guide clamping groove of the right fixed guide plate; the front clamping jaw and the rear clamping jaw are respectively hinged with the lower ends of the front connecting rod and the rear connecting rod through respective upper hinge holes; the lower hinge holes of the front clamping jaw and the rear clamping jaw are hinged between the left fixed guide plate and the right fixed guide plate through a hinged fixed pin shaft.
4. The underground inclined roadway high-altitude elevator as claimed in claim 1, wherein: the hydraulic station, the power supply, the electric cabinet and the lifting operation machine are respectively fixed on the mining flat car; the four claw type stabilizers are respectively fixed at four corners of the mining flat car, so that central lines of the four claw type stabilizers are respectively vertically aligned with the tracks fixed on the bottom plate of the inclined roadway, and the front claw and the rear claw keep proper distances from the tracks.
CN202210057145.XA 2022-01-19 2022-01-19 Underground inclined roadway high-altitude elevator Pending CN114408828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210057145.XA CN114408828A (en) 2022-01-19 2022-01-19 Underground inclined roadway high-altitude elevator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210057145.XA CN114408828A (en) 2022-01-19 2022-01-19 Underground inclined roadway high-altitude elevator

Publications (1)

Publication Number Publication Date
CN114408828A true CN114408828A (en) 2022-04-29

Family

ID=81272868

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210057145.XA Pending CN114408828A (en) 2022-01-19 2022-01-19 Underground inclined roadway high-altitude elevator

Country Status (1)

Country Link
CN (1) CN114408828A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116877780A (en) * 2023-07-06 2023-10-13 河南煤炭建设集团机电安装有限公司 Inclined shaft pipeline installation platform, installation structure and installation method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201162023Y (en) * 2007-12-29 2008-12-10 中冶南方工程技术有限公司 A Bottom Cover Car for Vertical Annealing Furnace
CN101433487A (en) * 2008-12-04 2009-05-20 陈利忠 Mechanism for sloping table-board to right or left
CN103204171A (en) * 2013-04-03 2013-07-17 山西煤机银利达机械制造有限公司 Hydraulic rail clamping device
CN103240718A (en) * 2013-05-08 2013-08-14 广西大学 Inclined adjustable worktable with synchronous loading and unloading function
KR20150145842A (en) * 2014-06-19 2015-12-31 여운 Tilt-adjustable lifting device
CN207943824U (en) * 2018-03-09 2018-10-09 国网山西省电力公司太原供电公司 The hydraulic platform formula device of cabinet built-in device is installed for uneven road surface
CN213444788U (en) * 2020-07-15 2021-06-15 成浩 Adjustable inclination's mining engineering uses colliery conveyor
CN215475098U (en) * 2021-04-14 2022-01-11 铁法煤业(集团)有限责任公司小青煤矿 Hydraulic lift truck special for installing car stopping fence
CN216785668U (en) * 2022-01-19 2022-06-21 河南理工大学 Underground inclined roadway high-altitude elevator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201162023Y (en) * 2007-12-29 2008-12-10 中冶南方工程技术有限公司 A Bottom Cover Car for Vertical Annealing Furnace
CN101433487A (en) * 2008-12-04 2009-05-20 陈利忠 Mechanism for sloping table-board to right or left
CN103204171A (en) * 2013-04-03 2013-07-17 山西煤机银利达机械制造有限公司 Hydraulic rail clamping device
CN103240718A (en) * 2013-05-08 2013-08-14 广西大学 Inclined adjustable worktable with synchronous loading and unloading function
KR20150145842A (en) * 2014-06-19 2015-12-31 여운 Tilt-adjustable lifting device
CN207943824U (en) * 2018-03-09 2018-10-09 国网山西省电力公司太原供电公司 The hydraulic platform formula device of cabinet built-in device is installed for uneven road surface
CN213444788U (en) * 2020-07-15 2021-06-15 成浩 Adjustable inclination's mining engineering uses colliery conveyor
CN215475098U (en) * 2021-04-14 2022-01-11 铁法煤业(集团)有限责任公司小青煤矿 Hydraulic lift truck special for installing car stopping fence
CN216785668U (en) * 2022-01-19 2022-06-21 河南理工大学 Underground inclined roadway high-altitude elevator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116877780A (en) * 2023-07-06 2023-10-13 河南煤炭建设集团机电安装有限公司 Inclined shaft pipeline installation platform, installation structure and installation method

Similar Documents

Publication Publication Date Title
US10787343B2 (en) Self-climbing robot for installing elevator guide rail
CN202148909U (en) Operation vehicle for mounting tunnel arch trusses
CN108729930B (en) CG-3 tunnel founds hunch platform truck
CN103590763A (en) Blowout preventer transportation and installation device of oil drilling platform
CN109577676B (en) Intelligent cantilever beam dismounting device and dismounting method thereof
CN111533055A (en) Pipeline carrying equipment for trenchless pipe jacking construction
CN106988689A (en) A kind of drilling tool automatic migration device of land science probing rig
CN211813313U (en) Crawler-type lifting vehicle for coal mine
CN105569692A (en) Trolley for welding tunnel waterproof board hanging cloth
CN114408828A (en) Underground inclined roadway high-altitude elevator
CN216785668U (en) Underground inclined roadway high-altitude elevator
CN114291773A (en) A high-altitude elevator for large-section tunnels in coal mines
CN106640099A (en) Hydraulic walking type direct-walking station-crossing mechanism of shield tunneling machine mainframe
CN106121253B (en) Installation component adjustable auxiliary installation device and method
CN114395950A (en) Device is established to single track gallows is torn open in track ann
CN111945736B (en) Intelligent pile driving machine
CN211849450U (en) Guniting vehicle for deep foundation pit support
CN211230285U (en) Working machine with pressure
CN109898375B (en) Hydraulic rail replacing machine
CN219365366U (en) A mobile hanging cage for installation of steel structure roof reverse buckle plate
CN203626649U (en) Blowout preventer transportation and installation device for oil drilling platform
CN214456513U (en) Crane rail mounting vehicle
CN114408821A (en) A kind of underground rail wheeled high-altitude elevator in coal mine
CN110683347A (en) Auxiliary device for monorail hanging track
CN205472419U (en) Buffer tank lifting device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination