CN109178965B - Device for dumping broken coal in separate piles for coal mine - Google Patents

Device for dumping broken coal in separate piles for coal mine Download PDF

Info

Publication number
CN109178965B
CN109178965B CN201810894912.6A CN201810894912A CN109178965B CN 109178965 B CN109178965 B CN 109178965B CN 201810894912 A CN201810894912 A CN 201810894912A CN 109178965 B CN109178965 B CN 109178965B
Authority
CN
China
Prior art keywords
coal
plate
piling
servo motor
coal mine
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.)
Expired - Fee Related
Application number
CN201810894912.6A
Other languages
Chinese (zh)
Other versions
CN109178965A (en
Inventor
罗虎
张朝举
曹明
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.)
Wanbei Coal Electricity Group Co ltd
Original Assignee
Wanbei Coal Electricity Group Co ltd
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 Wanbei Coal Electricity Group Co ltd filed Critical Wanbei Coal Electricity Group Co ltd
Priority to CN201810894912.6A priority Critical patent/CN109178965B/en
Publication of CN109178965A publication Critical patent/CN109178965A/en
Application granted granted Critical
Publication of CN109178965B publication Critical patent/CN109178965B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00Loading or unloading
    • B65G65/28Piling or unpiling loose materials in bulk, e.g. coal, manure, timber, not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention discloses a device for piling and dumping broken coal for a coal mine, which comprises a ground, a sliding inclined plate, a travelling tunnel, a first guide rail, a single grooved wheel, a groove, a gear, a T-shaped long plate cover, a baffle, a second gear, a chain, a first servo motor, a fixing frame, a supporting plate, a stirring plate, a second servo motor, a first base beam, a second guide rail, a coal block transport vehicle, a second base beam, a supporting rod, a rectangular through hole, a strip-shaped plate, an electric hydraulic push rod and a fixing plate. The invention has reasonable design, realizes the function of piling and stacking the broken coal blocks in a separated manner, is convenient for orderly piling, is suitable for a larger coal piling field, is beneficial to falling the broken coal blocks into a car hopper of a loading car body from the inside of the pile, reduces the use times of a forklift, saves the use cost of the forklift, and is beneficial to moving the mined broken coal to a piling place.

Description

Device for dumping broken coal in separate piles for coal mine
Technical Field
The invention relates to a device for dumping crushed coal in a separated pile, in particular to a device for dumping crushed coal in a separated pile for a coal mine, and belongs to the technical field of coal mine application.
Background
Coal mines refer to places rich in coal resources, and generally refer to factories for producing coal by adopting an underground mining or open-air mining mode.
Move out and be equipped with the mine car of garrulous coal cinder apart from stacking the department and have certain distance, lack and set up the transportation that guide rail structure comes conveniently through stacking ground top, the same volume of stacking is certain simultaneously, need put another department of stacking, there is the inconvenient problem of removal, the garrulous coal cinder of will stacking is packed into the carrier loader and all can needs the forklift to carry out the shovel coal loading, all carry out the shovel from the edge and get, will raise the dust when dry weather, and the forklift that needs to a large amount of carloadings is more, the number of times of use also increases, this just needs increase capital purchase forklift. Therefore, the device for piling and pouring the crushed coal for the coal mine is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problems and provide a device for piling and dumping crushed coal for a coal mine.
The invention achieves the aim through the following technical scheme, the device for piling and dumping crushed coal for the coal mine comprises two first base beams and a T-shaped long plate cover, the two first base beams are fixedly connected with each other through a connecting plate, supporting plates are respectively arranged at the bottoms of the two ends of the two first base beams, grooves are formed in the end faces of the bottoms of the supporting plates, single grooved wheels are rotatably arranged in the grooves, a shaft rod on one side of each single grooved wheel penetrates through the surface of each supporting plate and is provided with a first gear, the first gear is in transmission connection with a second gear through a chain, the second gear is arranged on the shaft rod of a first servo motor, the first servo motor is fixedly connected with the surface of the corresponding supporting plate through a fixing frame, a bearing plate is arranged in the middle between the two first base beams, a second servo motor is arranged at the bottom of the bearing plate, and a stirring plate is arranged on the shaft rod of the second servo motor, t type rectangular plate lid bottom is installed at driving gallery top port, and the vertical offering of driving gallery is on the ground surface, ground parallel mounting has two first guide rails, the driving gallery is located middle part between two first guide rails, four rectangle through-holes have been seted up to the vertical equidistance of T type rectangular plate lid top surface, and four one side movable mounting has bar board one end in the rectangle through-hole, bar board other end bottom movable mounting is in electric hydraulic rod's telescopic link one end, and electric hydraulic rod other end movable mounting is in fixed plate one side, fixed plate top fixed mounting is on the position that the T type rectangular plate lid inner wall top of side port one side corresponds in the rectangle through-hole.
Preferably, the T-shaped long plate cover and the travelling crane tunnel are both steel frame cement pouring structures, and the width of the travelling crane tunnel is larger than that of the loading vehicle body.
Preferably, the two sides of the inner wall of the T-shaped long plate cover are oppositely and downwards provided with the sliding inclined plates, and the distance between the bottom ends of the sliding inclined plates and the bottom of the driving gallery is greater than the height of the loading vehicle body.
Preferably, the single grooved wheels are installed on the corresponding first guide rails in a rolling manner, and the two support plates located at the bottoms of the same ends of the two first base beams are connected with the same first guide rail in a rolling manner through the corresponding single grooved wheels.
Preferably, one end of the first base beam is correspondingly attached to a second base beam, and the top surface of the second base beam and the top surface of the first base beam are both provided with second guide rails.
Preferably, the ground is fixedly connected with the bottom of the corresponding second base beam through the support rod, and the second base beam is in rolling connection with the coal block transport vehicle through the corresponding second guide rail.
Preferably, a baffle is arranged on the ground inside the first guide rail in parallel.
Preferably, the poking plate consists of a shaft sleeve and four strip-shaped poking plates, and the four strip-shaped poking plates are annularly and equidistantly arranged on the annular surface of the shaft sleeve.
Preferably, the first servo motor and the second servo motor are both electrically connected with an external power supply through a conducting wire.
Preferably, the first foundation beam is connected with the interior of the mine through the second foundation beam.
The invention has the beneficial effects that:
1. the device for dumping the broken coal in the separate pile for the coal mine has reasonable design, realizes the function of stacking the broken coal blocks in the separate pile, is convenient for orderly stacking, and is suitable for larger coal yards.
2. This kind of device of garrulous coal is dumped with dividing heap compact structure is favorable to garrulous coal piece from stacking inside dropping the car hopper that loads the automobile body, has reduced the use number of times of forklift, and has saved the use cost of forklift, and the electro-hydraulic push rod tractive bar board that passes through the start-up expandes, reaches the effect of opening the rectangle through-hole, is favorable to garrulous coal piece from stacking inside dropping in the car hopper that loads the automobile body.
3. This kind of device of broken coal is dumped with dividing heap to coal mine moves stably, is favorable to moving the broken coal of adopting to the department of stacking, drives first gear and the second gear of connecting through chain drive through the operation of the first servo motor of start-up and external power supply electric connection to drive the single sheave that corresponds and remove on the first guide rail that corresponds, make the first base beam who carries the coal cinder transport vechicle remove.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the connection structure of the T-shaped long plate cover and the driving tunnel of the present invention;
fig. 3 is a top view of the overall structure of the present invention.
In the figure: 1. the device comprises a ground, 2, a sliding inclined plate, 3, a traveling tunnel, 4, a first guide rail, 5, a single grooved wheel, 6, a groove, 7, a gear, 8, a T-shaped long plate cover, 9, a baffle, 10, a second gear, 11, a chain, 12, a first servo motor, 13, a fixing frame, 14, a supporting plate, 15, a stirring plate, 16, a second servo motor, 17, a first base beam, 18, a second guide rail, 19, a coal block transport vehicle, 20, a second base beam, 21, a supporting rod, 22, a rectangular through hole, 23, a strip-shaped plate, 24, an electric hydraulic push rod, 25 and a fixing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a coal piling and crushed coal dumping device for a coal mine comprises two first base beams 17 and a T-shaped long plate cover 8, wherein the two first base beams 17 are fixedly connected with each other through a connecting plate, supporting plates 14 are respectively installed at the bottoms of the two ends of the two first base beams 17, a groove 6 is formed in the end surface of the bottom of each supporting plate 14, a single sheave 5 is rotatably installed in each groove 6, a shaft rod on one side of the single sheave 5 penetrates through the surface of each supporting plate 14 to be provided with a first gear 7, the first gear 7 is in transmission connection with a second gear 10 through a chain 11, the second gear 10 is installed on the shaft rod of a first servo motor 12, the first servo motor 12 is fixedly connected with the surface of the corresponding supporting plate 14 through a fixing frame 13, a bearing plate is installed in the middle of the two first base beams 17, and a second servo motor 16 is installed at the bottom of the two first base beams 17, the poking plate 15 is installed to second servo motor 16's axostylus axostyle, install in 3 top ports of driving gallery bottom 8 of T type rectangular plate lid, and 3 vertical setups in 1 surface on ground of driving gallery, 1 parallel mounting on ground has two first guide rail 4, driving gallery 3 is located middle part between two first guide rail 4, four rectangle through-holes 22, and four have been seted up to the vertical equidistance of 8 top surfaces of T type rectangular plate lid one side movable mounting has 23 one end of bar board in the rectangle through- hole 22, 23 other end bottom movable mounting of bar board have the telescopic link one end of electric hydraulic push rod 24, and 24 other end movable mounting of electric hydraulic push rod in fixed plate 25 one side, fixed plate 25 top fixed mounting is on the position that 8 inner wall tops of T type rectangular plate lid on one side of the inboard port of rectangle through-hole 22 correspond.
The T-shaped long plate cover 8 and the travelling crane gallery 3 are both steel frame cement pouring structures, the width of the travelling crane gallery 3 is larger than that of the loading vehicle body, and the T-shaped long plate cover 8 and the travelling crane gallery 3 are both steel frame cement pouring structures, so that the bearing strength of the steel frame cement pouring structures on coal piles is enhanced; the two sides of the inner wall of the T-shaped long plate cover 8 are oppositely and downwards provided with the sliding inclined plates 2, and the distance between the bottom ends of the sliding inclined plates 2 and the bottom of the travelling underground tunnel 3 is larger than the height of the loading vehicle body, so that the loading vehicle body can conveniently run through; the single grooved wheels 5 are arranged on the corresponding first guide rails 4 in a rolling manner, and the two supporting plates 14 positioned at the bottoms of the same ends of the two first base beams 17 are connected with the same first guide rail 4 in a rolling manner through the corresponding single grooved wheels 5, so that one end of each first base beam 17 is horizontally and consistently attached to one end of the corresponding second base beam 20; one end of the first base beam 17 is correspondingly attached with a second base beam 20, and the top surface of the second base beam 20 and the top surface of the first base beam 17 are both provided with a second guide rail 18, so that a movable coal block transport vehicle 19 can be conveniently placed; the ground 1 is fixedly connected with the bottom of the corresponding second base beam 20 through a support rod 21, and the second base beam 20 is in rolling connection with the coal block transport vehicle 19 through the corresponding second guide rail 18, so that the effect of bearing the coal block transport vehicle 19 is achieved; the baffle plates 9 are arranged on the ground 1 at the inner side of the first guide rail 4 in parallel, so that the first guide rail 4 is prevented from being covered by the rolled crushed coal blocks; the poking plate 15 consists of a shaft sleeve and four strip-shaped poking plates, and the four strip-shaped poking plates are annularly and equidistantly arranged on the annular surface of the shaft sleeve, so that the coal pile with the overhigh top can be conveniently spread to the periphery; the first servo motor 12 and the second servo motor 16 are both electrically connected with an external power supply through a conductive wire, so that the effect of power supply operation is achieved; the first base beam 17 is connected to the mine interior via a second base beam 20, which facilitates the movement of the coal block wagon 19 with crushed coal onto the first base beam 17.
When the coal conveying vehicle 19 loaded with the crushed coal blocks is used, when the coal conveying vehicle 19 loaded with the crushed coal blocks moves from a mine to a first base beam 17 through a second guide rail 18 on a second base beam 20, a first servo motor 12 electrically connected with an external power supply is started to operate and drive a first gear 7 and a second gear 10 which are in transmission connection through a chain 11, so that a corresponding single-groove wheel 5 is driven to move on a corresponding first guide rail 4, the first base beam 17 loaded with the coal conveying vehicle 19 moves, the extracted crushed coal is favorably moved to a stacking position, when the coal conveying vehicle is moved to an empty ground 1, the crushed coal blocks in the coal conveying vehicle 19 are poured out, the ground 1 at the position is fully stacked with the crushed coal blocks through circularly repeating the operation mode, when the stacking position of the crushed coal blocks needs to be replaced, the first base beam 17 loaded with the coal conveying vehicle 19 is moved to the next stacking position of the crushed coal blocks, thereby realizing the function of piling the crushed coal blocks in a separated manner, being convenient for orderly piling and being suitable for a larger coal piling field, driving the poking plate 15 to slowly rotate by starting the second servo motor 16 electrically connected with an external power supply, being convenient for spreading the top part of the crushed coal piles exceeding the poking plate 15 all around, when the crushed coal piles on the ground 1 need to be loaded on a truck for transportation, because a plurality of crushed coal piles cover the T-shaped long plate cover 8 at the bottom of the crushed coal piles, driving the loading truck body into the truck gallery 3 at the moment, aligning the port of the truck hopper to the port formed by the sliding inclined plates 2 at two sides, keeping the loading truck body still, simultaneously starting the electric hydraulic push rod 24 corresponding to the top of the truck hopper to be in a contraction state, leading the started electric hydraulic push rod 24 to draw the strip-shaped plate 23 to be unfolded, achieving the effect of opening the rectangular through hole 22, being beneficial to the crushed coal blocks to fall into the truck hopper loading the, the use times of the forklift are reduced.
The first servo motor 12 and the second servo motor 16 are both of a type L RF90 provided by a Rongrong motor Tanbaijian shop and a matched power supply and circuit thereof.
The electric hydraulic push rod 24 adopts an electric hydraulic push rod HOB heavy type provided by the hydraulic pressure of the Foshan Tianhai and a matched power supply and circuit thereof.
It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The utility model provides a device of garrulous coal is poured with dividing heap for coal mine, includes first foundation beam (17) and T type rectangular slab lid (8), its characterized in that: the two first base beams (17) are fixedly connected with each other through a connecting plate, supporting plates (14) are respectively installed at the bottoms of the two ends of the two first base beams (17), a groove (6) is formed in the end face of the bottom of each supporting plate (14), a single-grooved pulley (5) is rotatably installed in each groove (6), a shaft rod on one side of each single-grooved pulley (5) penetrates through the corresponding supporting plate (14) to be provided with a first gear (7), the first gear (7) is in transmission connection with a second gear (10) through a chain (11), the second gear (10) is installed on the shaft rod of a first servo motor (12), the first servo motor (12) is fixedly connected with the surface of the corresponding supporting plate (14) through a fixing frame (13), a bearing plate is installed in the middle of the two first base beams (17), and a second servo motor (16) is installed at the bottom of the two first base beams, a poking plate (15) is arranged on a shaft rod of the second servo motor (16);
the bottom of the T-shaped long plate cover (8) is arranged at the top port of the driving tunnel (3), the driving tunnel (3) is vertically arranged on the surface of the ground (1), two first guide rails (4) are arranged on the ground (1) in parallel, the driving tunnel (3) is positioned in the middle between the two first guide rails (4), four rectangular through holes (22) are vertically arranged on the top surface of the T-shaped long plate cover (8) at equal intervals, one end of a strip-shaped plate (23) is movably arranged at one side in the four rectangular through holes (22), the bottom of the other end of the strip-shaped plate (23) is movably arranged at one end of a telescopic rod of the electric hydraulic push rod (24), the other end of the electric hydraulic push rod (24) is movably arranged on one side of the fixed plate (25), the top of the fixing plate (25) is fixedly arranged at a position corresponding to the top of the inner wall of the T-shaped long plate cover (8) at one side of the end opening at the inner side of the rectangular through hole (22).
2. The coal mine coal piling and crushing device according to claim 1, wherein: the T-shaped long plate cover (8) and the driving gallery (3) are both of steel frame cement pouring structures, and the width of the driving gallery (3) is larger than that of the loading vehicle body.
3. The coal mine coal piling and crushing device according to claim 1, wherein: the two sides of the inner wall of the T-shaped long plate cover (8) are oppositely and downwards provided with the sliding inclined plates (2), and the distance between the bottom ends of the sliding inclined plates (2) and the bottom of the travelling tunnel (3) is greater than the height of a loading vehicle body.
4. The coal mine coal piling and crushing device according to claim 1, wherein: the single grooved wheels (5) are arranged on the corresponding first guide rails (4) in a rolling mode, and the two supporting plates (14) located at the bottoms of the same ends of the two first base beams (17) are connected with the same first guide rail (4) in a rolling mode through the corresponding single grooved wheels (5).
5. The coal mine coal piling and crushing device according to claim 1, wherein: one end of the first base beam (17) is correspondingly attached to a second base beam (20), and a second guide rail (18) is mounted on the top surface of the second base beam (20) and the top surface of the first base beam (17).
6. The coal mine coal piling and crushing device according to claim 1, wherein: the ground (1) is fixedly connected with the bottoms of the corresponding second base beams (20) through support rods (21), and the second base beams (20) are in rolling connection with the coal block transport vehicle (19) through corresponding second guide rails (18).
7. The coal mine coal piling and crushing device according to claim 1, wherein: and a baffle (9) is arranged on the ground (1) at the inner side of the first guide rail (4) in parallel.
8. The coal mine coal piling and crushing device according to claim 1, wherein: the poking plate (15) is composed of a shaft sleeve and four bar-shaped poking plates, and the four bar-shaped poking plates are arranged on the annular surface of the shaft sleeve at equal intervals.
9. The coal mine coal piling and crushing device according to claim 1, wherein: the first servo motor (12) and the second servo motor (16) are both electrically connected with an external power supply through conducting wires.
10. The coal mine coal piling and crushing device according to claim 1, wherein: the first base beam (17) is connected with the interior of the mine through a second base beam (20).
CN201810894912.6A 2018-08-08 2018-08-08 Device for dumping broken coal in separate piles for coal mine Expired - Fee Related CN109178965B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810894912.6A CN109178965B (en) 2018-08-08 2018-08-08 Device for dumping broken coal in separate piles for coal mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810894912.6A CN109178965B (en) 2018-08-08 2018-08-08 Device for dumping broken coal in separate piles for coal mine

Publications (2)

Publication Number Publication Date
CN109178965A CN109178965A (en) 2019-01-11
CN109178965B true CN109178965B (en) 2020-07-31

Family

ID=64920439

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810894912.6A Expired - Fee Related CN109178965B (en) 2018-08-08 2018-08-08 Device for dumping broken coal in separate piles for coal mine

Country Status (1)

Country Link
CN (1) CN109178965B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110127311B (en) * 2019-05-09 2021-10-26 陕西助智信息技术有限公司 Mobilizable intelligent building engineering waste recovery device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1059546A (en) * 1996-08-23 1998-03-03 Mitsubishi Heavy Ind Ltd Portal reclaimer
CN102642720A (en) * 2012-01-19 2012-08-22 贺海华 Bulk material stacking machine
CN107879136A (en) * 2017-10-30 2018-04-06 浙江鑫直建筑有限公司 A kind of refuse landfill discharging platform and its discharge method
CN107934593A (en) * 2018-01-04 2018-04-20 洛阳乐森石化新材料有限公司 A kind of device for aiding in truck handling material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1059546A (en) * 1996-08-23 1998-03-03 Mitsubishi Heavy Ind Ltd Portal reclaimer
CN102642720A (en) * 2012-01-19 2012-08-22 贺海华 Bulk material stacking machine
CN107879136A (en) * 2017-10-30 2018-04-06 浙江鑫直建筑有限公司 A kind of refuse landfill discharging platform and its discharge method
CN107934593A (en) * 2018-01-04 2018-04-20 洛阳乐森石化新材料有限公司 A kind of device for aiding in truck handling material

Also Published As

Publication number Publication date
CN109178965A (en) 2019-01-11

Similar Documents

Publication Publication Date Title
CN202966320U (en) Hydraulic traction self-advancing flat car
CN109178965B (en) Device for dumping broken coal in separate piles for coal mine
CN103334755B (en) Slope hoisting and crushing system for deep open-pit mine
CN202968018U (en) Folding type installation forklift
CN201635097U (en) Mobile ballasting platform counterforce device
CN205366790U (en) Portable cantilever goods shelves
CN102094652A (en) Coal mine underground multifunctional stirring, loading and unloading device
CN212317990U (en) Comprehensive continuous coal mining system for open pit mine
AU2019379377B2 (en) Mining system
CN211417343U (en) Stone discharge apparatus for coal mine track
CN110406452B (en) Tarpaulin placing vehicle for material stack
CN207957486U (en) A kind of mine lift Transportation Engineering mechanical equipment
CN219526134U (en) Material lifting device for engineering
CN214086229U (en) Ore transportation system
CN212709383U (en) 5M or 7M hydraulic rail flatbed
CN203097942U (en) All-hydraulic moving gangue bin
CN113236352B (en) Crawler-type fixed pulling and moving device and pulling and moving method
CN117485230A (en) Underground container handling system
CN203383821U (en) Slope lifting and crushing system for deep open pit
CN202864482U (en) Bridge type transshipment belt conveyor
CN212796879U (en) High-toughness light-weight heavy-load mine car
CN103274305B (en) A kind of special purpose crane
CN214985040U (en) Caterpillar protection device of movable arm rotating crawler crane
CN102897543B (en) Bridge type transfer belt conveyor
CN202785209U (en) Light-type skip of deviated well

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
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200731

Termination date: 20210808