CN109179141A - The anti-skidding clamping device of mine hoist - Google Patents
The anti-skidding clamping device of mine hoist Download PDFInfo
- Publication number
- CN109179141A CN109179141A CN201811426302.XA CN201811426302A CN109179141A CN 109179141 A CN109179141 A CN 109179141A CN 201811426302 A CN201811426302 A CN 201811426302A CN 109179141 A CN109179141 A CN 109179141A
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- China
- Prior art keywords
- groups
- welded
- mine
- support base
- clamping device
- 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
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- 239000000523 sample Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 210000000515 tooth Anatomy 0.000 description 6
- 101100408455 Arabidopsis thaliana PLC7 gene Proteins 0.000 description 4
- 102000011842 Serrate-Jagged Proteins Human genes 0.000 description 2
- 108010036039 Serrate-Jagged Proteins Proteins 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/185—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by acting on main ropes or main cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/04—Mining-hoist cars or cages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/32—Detent devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses the anti-skidding clamping devices of mine hoist, including support base, mine and support frame, the support base is symmetrical arranged two groups, and shaft is provided between two groups of support base upper ends, set has reel in the shaft, the reel side is provided with speed probe, the support base side is welded with PLC by connecting rod, the support base side is provided with two groups of support frames, two groups of support frame as described above opposing end surface tops are welded with fixing axle, fixing axle opposing end surface described in two groups passes through bearing respectively and is rotatably connected to head sheave, the head sheave two sides and be located at fixing axle on be welded with fixed plate, hook tooth is welded on the turntable of the head sheave two sides, it is fixed described in two groups and is vertically arranged with electric sliding rail in plate end face.The anti-skidding clamping device of the mine hoist can effectively prevent wirerope and hoisting container to glide, can be used with popularity.
Description
Technical field
The invention belongs to mine hoist technical fields, and in particular to the anti-skidding clamping device of mine hoist.
Background technique
Mine hoist, also referred to as winch are a kind of large-scale hoister tool equipment.It is driven by a motor mechanical equipment, to drive
Wirerope completes conveying Wang business to drive container to go up and down in the wellbore.Mine hoist be by original water lift gradually
It has evolved.Modern mine hoist lifting capacity is big, and speed is high, has evolved into the full-automatic weight of electronic computer control
Type mining machinery.Elevator mainly by boom hoist cable, balance rope, hoisting container, derrick, head sheave, pit gear (including
Magnetic track, tank beam etc.) etc. composition.For multi-rope friction hoisting machine at work using friction transmitting power, wirerope, which is taken, is placed on friction
On the friction lining of wheel, hoisting container is suspended on the both ends of wirerope, is also hung with balance rope, wirerope in container bottom
It is pressed on friction lining with certain normal pressure and just generates frictional force.Under the action of this frictional force, wirerope is just followed
Friction pulley moves together, to realize the promotion or decentralization of container.Due to multi-rope friction hoisting machine with high security, steel wire
Diameter of restricting is small, leading wheel diameter is small, weight of equipment is light, little power consumption, it is cheap the advantages that, have developed rapidly.Except for deep vertical
It is promoted outer, it may also be used for shallow vertical and inclined shaft hoisting.Since the purpose friction of boom hoist cable and friction lining is leaned in friction winding
Power transmits power, therefore it is easy to appear the danger of sliding accident.
Existing elevator anti-skid device need to lean on additional power device just and can brake to be implemented to clamp to wirerope, clamping effect
There is the phenomenon that steel wire rope gliding in difference.
Summary of the invention
The purpose of the present invention is to provide the anti-skidding clamping devices of mine hoist, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme: the anti-skidding clamping device of mine hoist, including branch
Pedestal, mine and support frame are supportted, the support base is symmetrical arranged two groups, and is provided between two groups of support base upper ends
Shaft, set has reel in the shaft, and the reel side is provided with speed probe, and the support base side passes through company
Extension bar is welded with PLC, and the support base side is provided with two groups of support frames, and two groups of support frame as described above opposing end surface tops are welded
Be connected to fixing axle, fixing axle opposing end surface described in two groups passes through bearing respectively and is rotatably connected to head sheave, the head sheave two sides and
It is welded with fixed plate in fixing axle, hook tooth is welded on the turntable of the head sheave two sides, fixed plate phase described in two groups
Electric sliding rail is provided with to end face inner vertical, sliding block is slidably connected in the electric sliding rail, the sliding block is far from electric sliding
One end face of rail is welded with pawl, is mine immediately below the head sheave, is wound with N group wirerope, the steel wire on the reel
Rope, which rides in head sheave and extends vertically into far from one end of reel, connects hoisting container in mine；
Two groups of support frames as described above are tiltedly installed with connecting rod close to an end face of mine and right above mine respectively, institute
It states connecting rod and is welded with sleeve far from one end of support frame, one end of the connecting rod close to sleeve is welded with the first electric expansion
Bar, the tube chamber welds with base of first electric telescopic rod is on support frame.
Preferably, it is vertically arranged in the sleeve with serrate fixed block, an end face of the fixed block far from sawtooth
It is connected on sleeve lining by electric pushrod.
Preferably, the mine inner wall symmetrically offers two groups of sliding slots, and slide plate is provided in sliding slot, the slide plate
On open up through-hole vertically, inside the slide plate and be located at two sides and laterally offer the first mounting hole, the first peace described in two groups
It fills inside the internal stretch to through-hole of hole, is provided with sawtooth on the through-hole wall and with the first mounting hole opposite position.
Preferably, it is provided with fixing seat in first mounting hole, hydraulic telescopic rod is provided in the fixing seat, it is described
The telescopic end and sawtooth of hydraulic telescopic rod are same axis.
Preferably, hoisting container two sides symmetrical end face, which tilts, offers two group of second mounting hole, second peace
Dress hole is tilted to be provided with the second electric telescopic rod, and the telescopic end of second electric telescopic rod is welded with band nail antiskid disk.
Technical effect and advantage of the invention: the anti-skidding clamping device of the mine hoist, by the way that pawl, electric sliding is arranged
Rail band movable slider and pawl, which drop to hook tooth position, to carry out stopping head sheave rotation, can effectively prevent steel wire rope gliding；It is logical
The first electric telescopic rod of setting is crossed, wirerope applies power vertically downward to connecting rod, and the first electric telescopic rod tenses connecting rod,
And reaction force is applied to connecting rod, connecting rod can be effectively prevent to pull damage by wirerope；By the way that hydraulically extensible is arranged
The telescopic end of bar, hydraulic telescopic rod is withstood on wirerope to sawtooth, can effectively fix wirerope；It is followed closely by setting band anti-skidding
Disk, the second electric telescopic rod will be pushed on mine inner wall with nail antiskid disk, by friction, can be effectively prevented under hoisting container
It is sliding.The anti-skidding clamping device of the mine hoist can effectively prevent wirerope and hoisting container to glide, can be made with popularity
With.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is skateboard schematic diagram of the invention；
Fig. 3 is hoisting container structural schematic diagram of the invention；
Fig. 4 is tube-in-tube structure schematic diagram of the invention；
Fig. 5 is click connection schematic diagram of the invention；
Fig. 6 is fixed plate structure schematic diagram of the invention.
In figure: 1 support base, 2 mines, 3 support frames, 4 shafts, 5 reels, 6 speed probes, 7PLC, 8 fixing axles, 9 are consolidated
Fixed board, 10 pawls, 11 head sheaves, 12 wirerope, 13 connecting rods, 14 sleeves, 15 first electric telescopic rods, 16 slide plates, 17 sliding slots, 18
Through-hole, 19 first mounting holes, 20 sawtooth, 21 fixing seats, 22 hydraulic telescopic rods, 23 hoisting containers, 24 second mounting holes, 25 second
Electric telescopic rod, 26 band nail antiskid disks, 27 fixed blocks, 28 hook tooths, 29 electric sliding rails, 30 sliding blocks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides the anti-skidding clamping devices of mine hoist as shown in figures 1 to 6, including support base 1, mine 2
With support frame 3, the support base 1 is symmetrical arranged two groups, and is provided with shaft 4, institute between two groups of 1 upper ends of support base
It states set in shaft 4 and has reel 5,5 side of reel is provided with speed probe 6, and 1 side of support base passes through connection
Bar is welded with PLC7, and 1 side of support base is provided with two groups of support frames 3, and two groups of 3 opposing end surface tops of support frame as described above are equal
It is welded with fixing axle 8,8 opposing end surface of fixing axle described in two groups passes through bearing respectively and is rotatably connected to head sheave 11, the head sheave 11
Two sides and it is located in fixing axle 8 and is welded with fixed plate 9, is welded with hook tooth 28 on the turntable of 11 two sides of head sheave, two
The group 9 opposing end surface inner vertical of fixed plate is provided with electric sliding rail 29, slidably connects sliding block in the electric sliding rail 29
30, the sliding block 30 is welded with pawl 10 far from an end face of electric sliding rail 29, is mine 2 immediately below the head sheave 11, described
N group wirerope 12 is wound on reel 5, the wirerope 12 rides in head sheave 11 and extends vertically into far from one end of reel 5
Hoisting container 23 is connected in mine 2；
Two groups of support frames as described above 3 are tiltedly installed with connecting rod close to an end face of mine 2 and right above mine 2 respectively
13, the connecting rod 13 is welded with sleeve 14 far from one end of support frame 3, and the connecting rod 13 is welded close to one end of sleeve 14
There is the first electric telescopic rod 15, for the tube chamber welds with base of first electric telescopic rod 15 on support frame 3, the PLC7 is S-200,
The speed probe 6 is SF63, and by the way that pawl 10 is arranged, electric sliding rail 29 drops to hook tooth with movable slider 30 and pawl 10
28 positions carry out that head sheave 11 is stopped to rotate, and can effectively prevent wirerope 12 from gliding.
Specifically, be vertically arranged in the sleeve 14 with serrate fixed block 27, the fixed block 27 is far from sawtooth
One end face is connected on 14 inner wall of sleeve by electric pushrod, prevents wirerope 12 from gliding.
Specifically, 2 inner wall of mine symmetrically offers two groups of sliding slots 17, and slide plate 16 is provided in sliding slot 17,
It opens up through-hole 18 on the slide plate 16 vertically, 16 inside of slide plate and is located at two sides and laterally offers the first mounting hole
19, inside the first mounting hole 19 internal stretch to through-hole 18 described in two groups, on 18 inner wall of through-hole and with the first mounting hole
19 opposite positions are provided with sawtooth 20, and sawtooth 20 is inserted into wirerope 12.
Specifically, being provided with fixing seat 21 in first mounting hole 19, hydraulically extensible is provided in the fixing seat 21
Bar 22, the telescopic end and sawtooth 20 of the hydraulic telescopic rod 22 are same axis, are squeezed to sawtooth 20 wirerope 12.
Specifically, the 23 two sides symmetrical end face of hoisting container tilts and offers two group of second mounting hole 24, described
Two mounting holes 24 are tilted to be provided with the second electric telescopic rod 25, and the telescopic end of second electric telescopic rod 25 is welded with band nail
Antiskid disk 26 prevents hoisting container 23 from declining.
Specifically, the anti-skidding clamping device of the mine hoist, when gliding, speed probe 6 sends signal
Electric sliding rail 29 is controlled to PLC7, PLC7, electric sliding rail 29, which drops to 28 position of hook tooth with movable slider 30 and pawl 10, to carry out
Stopping head sheave 11 to rotate, can effectively prevent wirerope 12 from gliding, wirerope 12 applies power vertically downward to connecting rod 13,
First electric telescopic rod 15 tenses connecting rod 13, and applies reaction force to connecting rod 13, can effectively prevent connecting rod 13
Damage is pullled by wirerope 12, the telescopic end of hydraulic telescopic rod 22 is withstood on wirerope 12 to sawtooth 20, fixed wirerope 12, the
Two electric telescopic rods 25 will be pushed on 2 inner wall of mine with nail antiskid disk 26, by friction, can be effectively prevented under hoisting container 23
It is sliding.The anti-skidding clamping device of the mine hoist can effectively prevent wirerope and hoisting container to glide, can be made with popularity
With.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of anti-skidding clamping device of mine hoist, including support base (1), mine (2) and support frame (3), feature
Be: the support base (1) is symmetrical arranged two groups, and is provided with shaft (4) between two groups of support base (1) upper ends,
Set has reel (5) on the shaft (4), and reel (5) side is provided with speed probe (6), the support base (1)
Side is welded with PLC(7 by connecting rod), support base (1) side is provided with two groups of support frames (3), props up described in two groups
Support (3) opposing end surface top is welded with fixing axle (8), and fixing axle described in two groups (8) opposing end surface is turned by bearing respectively
It is dynamic to be connected with head sheave (11), head sheave (11) two sides and it is located on fixing axle (8) and is welded with fixed plate (9), the day
It takes turns and is welded with hook tooth (28) on the turntable of (11) two sides, fixed plate described in two groups (9) opposing end surface inner vertical is provided with electricity
Dynamic sliding rail (29), the electric sliding rail (29) is interior to be slidably connected sliding block (30), and the sliding block (30) is far from electric sliding rail (29)
An end face be welded with pawl (10), be mine (2) to be wound with N group steel wire on the reel (5) immediately below the head sheave (11)
It restricts (12), the wirerope (12) rides on head sheave (11) far from the one end of reel (5) and extends vertically into connection in mine (2)
Hoisting container (23)；
Two groups of support frames as described above (3) are tiltedly installed with close to an end face of mine (2) and right above mine (2) respectively
Connecting rod (13), the connecting rod (13) are welded with sleeve (14) far from the one end of support frame (3), the connecting rod (13) close to
One end of sleeve (14) is welded with the first electric telescopic rod (15), and the tube chamber welds with base of first electric telescopic rod (15) is in support
On frame (3).
2. the anti-skidding clamping device of mine hoist according to claim 1, it is characterised in that: erected in the sleeve (14)
It is directly provided with the fixed block (27) of sawtooth, the fixed block (27) is connected to set by electric pushrod far from an end face of sawtooth
On cylinder (14) inner wall.
3. the anti-skidding clamping device of mine hoist according to claim 1, it is characterised in that: mine (2) inner wall
Two groups of sliding slots (17) are symmetrically offered, and are provided with slide plate (16) in sliding slot (17), are opened up vertically on the slide plate (16)
Through-hole (18), the slide plate (16) is internal and laterally offers the first mounting hole (19) positioned at two sides, first described in two groups
Mounting hole (19) internal stretch is internal to through-hole (18), on through-hole (18) inner wall and corresponding with the first mounting hole (19)
Position is provided with sawtooth (20).
4. the anti-skidding clamping device of mine hoist according to claim 3, it is characterised in that: first mounting hole
(19) it is provided with fixing seat (21) in, is provided with hydraulic telescopic rod (22), the hydraulic telescopic rod on the fixing seat (21)
(22) telescopic end and sawtooth (20) is same axis.
5. the anti-skidding clamping device of mine hoist according to claim 1, it is characterised in that: the hoisting container (23)
Two sides symmetrical end face, which tilts, offers two group of second mounting hole (24), and second mounting hole (24) is tilted to be provided with second
Electric telescopic rod (25), the telescopic end of second electric telescopic rod (25) are welded with band nail antiskid disk (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426302.XA CN109179141A (en) | 2018-11-27 | 2018-11-27 | The anti-skidding clamping device of mine hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426302.XA CN109179141A (en) | 2018-11-27 | 2018-11-27 | The anti-skidding clamping device of mine hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109179141A true CN109179141A (en) | 2019-01-11 |
Family
ID=64938102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811426302.XA Pending CN109179141A (en) | 2018-11-27 | 2018-11-27 | The anti-skidding clamping device of mine hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109179141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209201A (en) * | 2020-11-09 | 2021-01-12 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | Guide device for eliminating looseness and suspension of steel wire rope of large-diameter sinking hoist |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB150494A (en) * | 1919-07-11 | 1920-09-09 | William Mack | Signalling mechanism for mines |
| CN2391861Y (en) * | 1999-07-09 | 2000-08-16 | 肖俊祥 | Steel-cable loosen proof device of mining-hoist winding device |
| CN200985231Y (en) * | 2006-12-15 | 2007-12-05 | 王瑞琪 | Energy-storage capsizing-proof dropping-proof device |
| CN102303803A (en) * | 2011-05-28 | 2012-01-04 | 赵强 | Sliding rope braking scheme and device for friction type hoist |
| CN103663036A (en) * | 2013-12-27 | 2014-03-26 | 江苏通用电梯有限公司 | Double-insurance linkage elevator |
| CN105819321A (en) * | 2016-05-27 | 2016-08-03 | 徐州工程学院 | Anti-slide clamping device of mine hoist |
| WO2017071080A1 (en) * | 2015-10-28 | 2017-05-04 | 中国矿业大学 | Miner safety protection device and method for vertical shaft elevator cage accident prevention |
| CN209322235U (en) * | 2018-11-27 | 2019-08-30 | 江苏安科中矿科技有限公司 | A kind of anti-skidding clamping device of mine hoist |
-
2018
- 2018-11-27 CN CN201811426302.XA patent/CN109179141A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB150494A (en) * | 1919-07-11 | 1920-09-09 | William Mack | Signalling mechanism for mines |
| CN2391861Y (en) * | 1999-07-09 | 2000-08-16 | 肖俊祥 | Steel-cable loosen proof device of mining-hoist winding device |
| CN200985231Y (en) * | 2006-12-15 | 2007-12-05 | 王瑞琪 | Energy-storage capsizing-proof dropping-proof device |
| CN102303803A (en) * | 2011-05-28 | 2012-01-04 | 赵强 | Sliding rope braking scheme and device for friction type hoist |
| CN103663036A (en) * | 2013-12-27 | 2014-03-26 | 江苏通用电梯有限公司 | Double-insurance linkage elevator |
| WO2017071080A1 (en) * | 2015-10-28 | 2017-05-04 | 中国矿业大学 | Miner safety protection device and method for vertical shaft elevator cage accident prevention |
| CN105819321A (en) * | 2016-05-27 | 2016-08-03 | 徐州工程学院 | Anti-slide clamping device of mine hoist |
| CN209322235U (en) * | 2018-11-27 | 2019-08-30 | 江苏安科中矿科技有限公司 | A kind of anti-skidding clamping device of mine hoist |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209201A (en) * | 2020-11-09 | 2021-01-12 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | Guide device for eliminating looseness and suspension of steel wire rope of large-diameter sinking hoist |
| CN112209201B (en) * | 2020-11-09 | 2022-04-19 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | Guide device for eliminating looseness and suspension of steel wire rope of large-diameter sinking hoist |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190111 |
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| WD01 | Invention patent application deemed withdrawn after publication |