CN208380626U - A kind of Inclined Full-mechanized Mining Face equipment rail transport device - Google Patents
A kind of Inclined Full-mechanized Mining Face equipment rail transport device Download PDFInfo
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- CN208380626U CN208380626U CN201820969749.0U CN201820969749U CN208380626U CN 208380626 U CN208380626 U CN 208380626U CN 201820969749 U CN201820969749 U CN 201820969749U CN 208380626 U CN208380626 U CN 208380626U
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- Prior art keywords
- track
- rope
- transport device
- mechanized mining
- mining face
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- 238000005065 mining Methods 0.000 title claims abstract description 24
- 230000032258 transport Effects 0.000 claims abstract description 41
- 230000004224 protection Effects 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 230000003409 anti-rejection Effects 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 5
- 239000003818 cinder Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a kind of Inclined Full-mechanized Mining Face equipment rail transport devices, basis is transported including bottom, it transports basic one end and is equipped with inclined shaft in the bottom, described inclined shaft one end is equipped with overhead conveyor basis, commutation sheave group is equipped on the basis of the bottom transport, the commutation sheave group side is equipped with the first security protection and keeps off column, first security protection gear column side is equipped with the first controller, first controller is equipped with the first safety alarm, first safety alarm side is equipped with communicator, the communicator side is equipped with control keypad, the first controller surrounding design closing guardrail, the inclined shaft bottom is equipped with track, Enhanced support frame is equipped at the top of the inclined shaft, Enhanced support frame bottom is connected with multiple groups prevent-moving car bar, the service hoisting winch of design prevents continuous rope Service hoisting assistant conveyance is provided when hoisting power deficiency, transport device design is simple, and it is high to save resource security performance.
Description
Technical field
The utility model relates to a kind of Inclined Full-mechanized Mining Face equipment rail transport devices.
Background technique
Currently, coal mine fully-mechanized mining working equipment is fixed on mine platform lorry, the track being laid in advance is pulled in by winch
Upper operation not only needs to be laid with track on the ground, also to be fixed when flat car is stopped transport using specific purpose tool and track, time-consuming
Arduously, once fixed form failure is there are car slipping security risk, and the big place of angle changing rate in tunnel, car slipping speed can be bigger,
Lack effective safeguard procedures, will cause equipment damage even casualties, to influence the manufacturing schedule of entire working face.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of Inclined Full-mechanized Mining Face equipment
Track conveying device.
The utility model achieves the above object through the following technical schemes: a kind of Inclined Full-mechanized Mining Face equipment rail
Transport device, including bottom transport basis, the bottom transport basic one end and are equipped with inclined shaft, and described inclined shaft one end is set
Have that overhead conveyor is basic, be equipped with commutation sheave group on the basis of the bottom transport, the commutation sheave group side is equipped with the
One security protection keeps off column, and first security protection gear column side is equipped with the first controller, and first controller is equipped with the
One safety alarm, first safety alarm side are equipped with communicator, and the communicator side is equipped with control keypad, described
First controller is surrounded by closing guardrail, and the inclined shaft bottom is equipped with track, is equipped with and strengthens at the top of the inclined shaft
Support bracket, Enhanced support frame bottom are connected with multiple groups prevent-moving car bar, and the prevent-moving car bar is equipped with high-strength I-steel,
The high-strength I-steel one end is connected with the first wirerope, and first wirerope one end is connected with the first cylinder, the track
Both ends are connected with equidistant reinforcement support rod, and the track is equipped with travelling bogie, and the rail base, which is equipped with, reinforces ground, described
Travelling bogie both ends are equipped with connection ring, and the connection ring is connected with the second wirerope, and second wirerope one end is connected with
Large size rope blocks, and is connected with multiple small-sized rope cards on the large-scale rope card, described small-sized rope card one end is connected separately with third steel wire
Rope, the 4th wirerope, the travelling bogie are connected and fixed hole equipped with multiple, and the travelling bogie edge is equipped with ballistic support
Bar, the inclined shaft is interior to be equipped with assistant conveyance chamber, is equipped with service hoisting winch, the auxiliary in the assistant conveyance chamber
Hoisting gear side is equipped with console, and the service hoisting winch is equipped with anti-rejection rope support close to track side, and the auxiliary mentions
Rise winch and the third wirerope connected by anti-rejection rope support, set on the anti-rejection rope support there are four spacing guide wheel, the control
Platform processed is equipped with the second safety alarm, is equipped with multiple equidistant directive wheels in the track, the directive wheel side is equipped with anti-
Sideslip wheel, the directive wheel, anti-deviation wheel bottom are respectively connected with fixed plate, and the fixed board ends are connect with the track,
The overhead conveyor basis is equipped with the second security protection close to inclined shaft one end and keeps off column, first security protection gear column, the
Two security protections gear column includes two fixed hurdles, movable column, is connected with connecting rope, the connecting rope one at the top of the activity column
End is connected with the second cylinder, and the second security protection gear column side is equipped with cable tensioner group, the cable tensioner
Group side is equipped with endless rope winch, and the endless rope winch bottom is equipped with mixed mud ground.
Preferably, first cylinder, the second cylinder connect tunnel air hose, and first cylinder, the by pipeline
Two cylinders are equipped with control valve, and the control keypad connects the control valve.
Preferably, first cylinder, the second cylinder are located at the prevent-moving car bar, movable column top.
Preferably, the track includes multistage I-steel, guidance tape, and guidance tape is located in the reinforcement ground.
Preferably, the track is bolted the fixed plate by multiple.
Preferably, security protection support frame is equipped in the assistant conveyance chamber, the assistant conveyance chamber is close to track
Side is equipped with safety barrier.
Preferably, assistant conveyance chamber bottom is equipped with firm ground, and the service hoisting winch is fixedly connected surely
Determine ground.
Preferably, the reinforcement ground mixes composition with rubble using cinder, and the reinforcement foundation thickness is not less than
50cm。
The beneficial effects of the utility model are: the Inclined Full-mechanized Mining Face equipment rail transport device is twisted using continuous rope
As main lifting means, which is generally used without purchase other equipment in mine and carries out driving transport vehicle, saves
Transportation cost is saved, and endless rope winch security performance is high, underground soft rock and coal petrography ground are more, the reinforcement ground of design, guarantee
Large scale equipment transportational process middle orbit does not deform, it is ensured that the safety of equipment conveying, the first security protection gear column of design,
Second security protection gear column guarantees that in equipment conveying, personnel in easy entry, will not hurt sb.'s feelings, simultaneously when preventing sport car from happening
Also it can play the role of blocking in sport car, increase the safety of equipment conveying, the multiple groups prevent-moving car bar of design is being run
Che Shi plays the role of buffer stop, provides the safety of equipment conveying, and the service hoisting winch of design prevents continuous rope from being promoted
Service hoisting assistant conveyance is provided when scarce capacity, transport device design is simple, and it is high to save resource security performance.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
Fig. 1 is a kind of Inclined Full-mechanized Mining Face equipment rail transport device structure chart of the utility model.
Fig. 2 is a kind of the first controller structure diagram of Inclined Full-mechanized Mining Face equipment rail transport device of the utility model.
Fig. 3 is a kind of Inclined Full-mechanized Mining Face equipment rail transporting apparatus transports vehicle structure of the utility model.
Fig. 4 is a kind of Inclined Full-mechanized Mining Face equipment rail transport device large size rope card structure figure of the utility model.
Fig. 5 is a kind of anti-rejection rope support structure chart of Inclined Full-mechanized Mining Face equipment rail transport device of the utility model.
Fig. 6 is a kind of Inclined Full-mechanized Mining Face equipment rail transport device track structure figure of the utility model.
Fig. 7 is a kind of the first security protection of Inclined Full-mechanized Mining Face equipment rail transport device gear column knot of the utility model
Composition.
Figure label: 1, bottom transport basis；2, inclined shaft；3, overhead conveyor basis；4, commutate sheave group；5,
One security protection keeps off column；6, the first controller；7, the first safety alarm；8, communicator；9, keypad is controlled；10, guardrail is closed；
11, track；12, Enhanced support frame；13, prevent-moving car bar；14, high-strength I-steel；15, the first wirerope；16, the first cylinder；
17, reinforce support rod；18, travelling bogie；19, reinforce ground；20, connection ring；21, the second wirerope；22, large-scale rope card；23,
Small-sized rope card；24, third wirerope；25, the 4th wirerope；26, it is connected and fixed hole；27, ballistic support bar；28, assistant conveyance
Chamber；29, service hoisting winch；30, anti-rejection rope support；31, spacing guide wheel；32, the second safety alarm；33, directive wheel；
34, anti-deviation wheel；35, fixed plate；36, the second security protection keeps off column；37, fixed hurdle；38, movable column；39, connecting rope；40,
Two cylinders；41, cable tensioner group；42, endless rope winch；43, mixed mud ground；44, console.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment, based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1,2, a kind of Inclined Full-mechanized Mining Face equipment rail transport device, including bottom transport basis 1, institute
It states bottom and transports basic 1 one end equipped with inclined shaft 2, inclined shaft 2 is high inclination-angle tunnel, and described 2 one end of inclined shaft is equipped with
Overhead conveyor basis 3, bottom transport basis 1 are equipped with commutation sheave group 4, and commutation sheave group 4 is continuous rope equipment
Wire rope reverse structure, 4 side of commutation sheave group are equipped with the first security protection and keep off column 5, and the first security protection gear column 5 exists
It carries out preventing personnel from entering when arithmetic facility, prevents safety accident, the first security protection gear 5 side of column is equipped with first
Controller 6, the first controller 6 facilitate carry out down operation personnel connection and, first controller 6 be equipped with first safety report
Alert device 7, the first safety alarm 7 are alerted in something unexpected happened, and 7 side of the first safety alarm is equipped with communication
Device 8, communicator 8, which facilitates in tunnel, writes to each other, and 8 side of communicator is equipped with control keypad 9, and control keypad 9 controls
The opening and closing of safety equipment, first controller 6 are surrounded by closing guardrail 10, and closing guardrail 10 protects operator
Shield, 2 bottom of inclined shaft are equipped with track 11, and equipment is transported on the rail 11, are equipped at the top of the inclined shaft 2 strong
Change support bracket 12, Enhanced support frame 12 increases the supporting intensity at 2 top of inclined shaft, prevents tunnel from falling rock and hurt sb.'s feelings, described
12 bottom of Enhanced support frame is connected with multiple groups prevent-moving car bar 13, and high-strength I-steel 14 is flexibly connected Enhanced support frame 12, and first
It is stretched out when cylinder 16 and drives the first wirerope 15 mobile, so that high-strength I-steel 14 be put down, sport car occurs during transportation
When play the role of blocking, the prevent-moving car bar 13 is equipped with high-strength I-steel 14, high-strength 14 one end of I-steel connection
There is the first wirerope 15, described first wirerope, 15 one end is connected with the first cylinder 16, and 11 both ends of track are connected with equidistantly
Reinforce support rod 17, the track 11 is equipped with travelling bogie 18, and 11 bottom of track, which is equipped with, reinforces ground 19, reinforces ground
19 be cinder and rubble mixture, increases by 11 load-bearing capacity of track, prevents the deformation of track 11 from influencing transport, the travelling bogie 18
Both ends are equipped with connection ring 20, and connection ring 20 facilitates other travelling bogies 18 to connect, or carry trolley with endless rope winch and connect
It connects, the connection ring 20 is connected with the second wirerope 21, and described second wirerope, 21 one end is connected with large-scale rope card 22, described big
Multiple small-sized rope cards 23 are connected on type rope card 22, small-sized rope card 23 is flexibly connected large-scale rope card 22, plays the role of traction, institute
It states small-sized 23 one end of rope card and is connected separately with third wirerope 24, the 4th wirerope 25, the travelling bogie 18 is equipped with multiple
It is connected and fixed hole 26, is connected and fixed on hole 26 through wirerope, equipment is connected and fixed when on travelling bogie 18 by wirerope
Hole 26 secures the equipment on travelling bogie 18, and 18 edge of travelling bogie is equipped with ballistic support bar 27, ballistic support bar
27 play the role of that equipment is protected not fall, and are equipped with assistant conveyance chamber 28 in the inclined shaft 2, and assistant conveyance chamber 28
In being equipped with service hoisting winch 29 in 2 middle section of inclined shaft, the assistant conveyance chamber 28, service hoisting winch 29 is assisted
Transporting equipment prevents overweight tractive force early period of equipment insufficient, and 29 side of service hoisting winch is equipped with console 44, console
44 control service hoisting winches 29 operate, and the service hoisting winch 29 is equipped with anti-rejection rope support 30, and institute close to 11 side of track
It states service hoisting winch 29 and the third wirerope 24 is connected by anti-rejection rope support 30, anti-rejection rope support 30 prevents travelling bogie from 18 surpassing
It crosses the winding of third wirerope 24 behind the middle section of tunnel or scratches, set that there are four spacing guide wheels 31 on the anti-rejection rope support 30, it is described
Console 44 is equipped with the second safety alarm 32, is equipped with multiple equidistant directive wheels 33, the directive wheel 33 in the track 11
Side is equipped with anti-deviation wheel 34, and directive wheel 33 prevents wirerope from scraping ground, and anti-deviation wheel 34 prevents wirerope sideslip, the guiding
Wheel 33,34 bottoms of anti-deviation wheel are respectively connected with fixed plate 35, and 35 both ends of fixed plate are connect with the track 11, the top
Portion transport basis 3 is equipped with the second security protection close to 2 one end of inclined shaft and keeps off column 36, and the second security protection gear column 36 is set in transport
It prevents personnel close to tunnel during standby, prevents injury to personnel, the first security protection gear column 5, the second security protection keep off column
36 include two fixed hurdles 37, movable column 38, is connected with connecting rope 39, described 39 one end of connecting rope at the top of the activity column 38
It is connected with the second cylinder 40, connecting rope 3 is located at 38 top of movable column, and the second cylinder 40 drives connecting rope 39 mobile, thus
Movable column 38 is risen or falls, the second security protection gear 36 side of column is equipped with cable tensioner group 41, steel wire tensioning
Wheel group 41 prevents wirerope that extension effects transport is used for a long time, and 41 side of cable tensioner group is equipped with endless rope winch
42,42 bottom of endless rope winch is equipped with mixed mud ground 43, and mixed mud ground 43 provides stability fundamental for pulling equipment, prevents
The only overweight drive endless rope winch 42 of equipment.
First cylinder 16, the second cylinder 40 connect tunnel air hose, and first cylinder 16, second by pipeline
Cylinder 40 is equipped with control valve, and the control keypad 9 connects the control valve, first cylinder 16, the second cylinder 40 difference
Above the prevent-moving car bar 13, movable column 38, the track 11 includes multistage I-steel, guidance tape, and guidance tape is located at institute
It states and reinforces in ground 19, the track 11 is bolted the fixed plate 35 by multiple, sets in the assistant conveyance chamber 28
There is security protection support frame, the assistant conveyance chamber 28 is equipped with safety barrier, the assistant conveyance chamber close to 11 side of track
28 bottoms are equipped with firm ground, and the service hoisting winch 29 is fixedly connected with firm ground, prevent service hoisting winch 29 from transporting
Unstable during defeated, the reinforcement ground 19 mixes composition with rubble using cinder, and 19 thickness of reinforcement ground is not less than
50cm prevents the equipment of transport is overweight from track 11 being caused to deform.
When the utility model is used, equipment is loaded on travelling bogie 18, endless rope winch 42 carries trolley connection
Third wirerope 24, the 4th wirerope 25 are connect by the 4th wirerope 25 with the second wirerope 21, start service hoisting winch
29, endless rope winch 42 drive travelling bogie 18 to move in inclined shaft 2, keep off the first security protection in moving process
Column 5, prevent-moving car bar 13, the second security protection gear column 36 are put down, when travelling bogie 18 fastly to 2 top of inclined shaft when, by the
Two security protections keep off column 36 and rise, and travelling bogie 18 is moved to gallery.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type, therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. basic (1) is transported in a kind of Inclined Full-mechanized Mining Face equipment rail transport device, including bottom, which is characterized in that institute
It states bottom and transports basic (1) one end equipped with inclined shaft (2), described inclined shaft (2) one end is equipped with overhead conveyor basis (3),
The bottom transports basic (1) and is equipped with commutation sheave group (4), and the commutation sheave group (4) side is equipped with the first safety
Anti- guard block column (5), the first security protection gear column (5) side is equipped with the first controller (6), on first controller (6)
Equipped with the first safety alarm (7), the first safety alarm (7) side is equipped with communicator (8), the communicator (8) one
Side is equipped with control keypad (9), and first controller (6) is surrounded by closing guardrail (10), and inclined shaft (2) bottom is set
Have track (11), is equipped with Enhanced support frame (12) at the top of the inclined shaft (2), Enhanced support frame (12) bottom is connected with
Multiple groups prevent-moving car bar (13), the prevent-moving car bar (13) are equipped with high-strength I-steel (14), the high-strength I-steel (14)
One end is connected with the first wirerope (15), and described first wirerope (15) one end is connected with the first cylinder (16), the track
(11) both ends are connected with equidistant reinforcement support rod (17), and the track (11) is equipped with travelling bogie (18), the track (11)
Bottom, which is equipped with, reinforces ground (19), and travelling bogie (18) both ends are equipped with connection ring (20), connection ring (20) connection
Have the second wirerope (21), described second wirerope (21) one end is connected with large-scale rope card (22), and the large size is restricted on card (22)
Multiple small-sized rope cards (23) are connected with, described small-sized rope card (23) one end is connected separately with third wirerope (24), the 4th steel wire
It restricts (25), the travelling bogie (18) is connected and fixed hole (26) equipped with multiple, and travelling bogie (18) edge is equipped with anti-
It protects support rod (27), is equipped with assistant conveyance chamber (28) in the inclined shaft (2), be equipped in the assistant conveyance chamber (28)
Service hoisting winch (29), service hoisting winch (29) side are equipped with console (44), the service hoisting winch (29)
Anti-rejection rope support (30) are equipped with close to track (11) side, and the service hoisting winch (29) connects institute by anti-rejection rope support (30)
It states third wirerope (24), is set on the anti-rejection rope support (30) there are four spacing guide wheel (31), set on the console (44)
Have the second safety alarm (32), multiple equidistant directive wheels (33), directive wheel (33) side are equipped in the track (11)
It is equipped with anti-deviation wheel (34), the directive wheel (33), anti-deviation wheel (34) bottom are respectively connected with fixed plate (35), the fixation
Plate (35) both ends are connect with the track (11), and the overhead conveyor basic (3) is equipped with second close to inclined shaft (2) one end
Security protection keeps off column (36), and the first security protection gear column (5), the second security protection gear column (36) include two fixed hurdles
(37), movable column (38) is connected with connecting rope (39) at the top of the activity column (38), and described connecting rope (39) one end is connected with the
Two cylinders (40), the second security protection gear column (36) side are equipped with cable tensioner group (41), the steel wire tensioning
Wheel group (41) side is equipped with endless rope winch (42), and endless rope winch (42) bottom is equipped with mixed mud ground (43).
2. a kind of Inclined Full-mechanized Mining Face equipment rail transport device according to claim 1, it is characterised in that: described
First cylinder (16), the second cylinder (40) connect tunnel air hose, and first cylinder (16), the second cylinder by pipeline
(40) it is equipped with control valve, the control keypad (9) connects the control valve.
3. a kind of Inclined Full-mechanized Mining Face equipment rail transport device according to claim 1, it is characterised in that: described
First cylinder (16), the second cylinder (40) are located at the prevent-moving car bar (13), movable column (38) top.
4. a kind of Inclined Full-mechanized Mining Face equipment rail transport device according to claim 1, it is characterised in that: described
Track (11) includes multistage I-steel, guidance tape, and guidance tape is located in the reinforcement ground (19).
5. a kind of Inclined Full-mechanized Mining Face equipment rail transport device according to claim 1 or 4, it is characterised in that:
The track (11) is bolted the fixed plate (35) by multiple.
6. a kind of Inclined Full-mechanized Mining Face equipment rail transport device according to claim 1, it is characterised in that: described
Security protection support frame is equipped in assistant conveyance chamber (28), the assistant conveyance chamber (28) is equipped with peace close to track (11) side
Full guardrail.
7. a kind of Inclined Full-mechanized Mining Face equipment rail transport device according to claim 1 or 6, it is characterised in that:
Assistant conveyance chamber (28) bottom is equipped with firm ground, and the service hoisting winch (29) is fixedly connected with firm ground.
8. a kind of Inclined Full-mechanized Mining Face equipment rail transport device according to claim 1, it is characterised in that: described
Reinforce ground (19) and composition is mixed with rubble using cinder, and reinforcement ground (19) thickness is not less than 50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969749.0U CN208380626U (en) | 2018-06-22 | 2018-06-22 | A kind of Inclined Full-mechanized Mining Face equipment rail transport device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969749.0U CN208380626U (en) | 2018-06-22 | 2018-06-22 | A kind of Inclined Full-mechanized Mining Face equipment rail transport device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208380626U true CN208380626U (en) | 2019-01-15 |
Family
ID=64965105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820969749.0U Expired - Fee Related CN208380626U (en) | 2018-06-22 | 2018-06-22 | A kind of Inclined Full-mechanized Mining Face equipment rail transport device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208380626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111977541A (en) * | 2020-07-27 | 2020-11-24 | 枣庄矿业(集团)付村煤业有限公司 | Transportation method of heavy equipment under large-gradient condition under mine |
-
2018
- 2018-06-22 CN CN201820969749.0U patent/CN208380626U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111977541A (en) * | 2020-07-27 | 2020-11-24 | 枣庄矿业(集团)付村煤业有限公司 | Transportation method of heavy equipment under large-gradient condition under mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 |