CN112209253B - Hoisting device for deep well underground mining - Google Patents
Hoisting device for deep well underground mining Download PDFInfo
- Publication number
- CN112209253B CN112209253B CN202011235691.5A CN202011235691A CN112209253B CN 112209253 B CN112209253 B CN 112209253B CN 202011235691 A CN202011235691 A CN 202011235691A CN 112209253 B CN112209253 B CN 112209253B
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- pressure sensor
- block
- support frame
- fixed
- mounting
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- 238000005065 mining Methods 0.000 title claims abstract description 36
- 238000013016 damping Methods 0.000 claims description 14
- 230000035939 shock Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 10
- 239000003245 coal Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
- E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Geophysics And Detection Of Objects (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a hoisting device for deep well underground mining, which comprises a support frame shell, wherein a servo motor is fixedly arranged in the support frame shell, a screw rod is fixedly arranged at the bottom of the servo motor, and is fixedly arranged in the support frame shell.
Description
Technical Field
The invention belongs to the field of mine underground mining, and particularly relates to a hoisting device for deep well underground mining.
Background
Underground mining is to excavate a series of roadways from the ground to the ground, the whole production process is to operate underground, various operation equipment is required to be transported into the underground roadway for installation and use, in coal mine production, an underground mining mode is the most important mode, so that research on underground mining technology has important practical significance, application of the underground mining technology must be suitable for the situation of coal mine geology and coal seam distribution, mining schemes are formulated in advance, application and supporting modes of equipment are determined, in open-air mining, a direct mining mode is generally adopted, but in underground mining, due to the condition restrictions of environment, equipment and the like, a top-down mining mode is generally adopted, and along with continuous development of the mining technology, the directional mining mode is also gradually widely applied.
However, in underground mining, due to the restriction of conditions such as environment and equipment, a mining mode from top to bottom is generally adopted, directional mining is not limited to mining in a certain link, but from the whole, coal mining is carried out on the corrected azimuth in advance by adopting a directional drilling mode, the existing deep well underground mining hoisting device has single function, underground ground subsidence cannot be monitored, the underground ground subsidence is ground elevation loss formed under the comprehensive actions of natural factors and human factors, and meanwhile, most of the supporting legs of the existing underground mining hoisting device are fixed in length, so that the underground mining hoisting device is easy to shake to damage when an underground mineral seam is uneven.
The invention comprises the following steps:
the invention aims to solve the problems and provide the hoisting device for the deep well underground mining, which solves the problems in the background art.
In order to solve the problems, the invention provides a technical scheme that: the utility model provides a deep well underground mining hoisting device, including the support frame shell, the inside fixed mounting of support frame shell is by servo motor, servo motor's bottom fixed mounting has the lead screw, lead screw fixed mounting is in support frame shell's inside, the outside cover of lead screw has first pressure sensor, one side fixed mounting of lead screw has the gag lever post, the gag lever post runs through first pressure sensor's inside, the bottom fixed mounting of gag lever post has the device base, the top of device base is connected with the bottom of lead screw, first pressure sensor's both sides fixed mounting has first fixed block, the below slidable mounting of first fixed block has second pressure sensor, the both sides fixed mounting of second pressure sensor has the second fixed block, one side surface mounting of support frame shell has pressure monitor, one side fixed mounting of pressure monitor has displacement monitor, the top fixed mounting of support frame shell has the supporting beam, the bottom slidable mounting of supporting beam has the movable block, the bottom fixed mounting of movable block has rings, the middle part of support frame shell both sides fixed mounting has the electrical extension board, the fixed mounting has the fixed mounting of extension board, the fixed mounting of extension board has the fixed mounting of extension board, fixed mounting of extension board fixed mounting of the support frame has the fixed mounting of extension board, the bottom fixed mounting of installation piece has damping spring, damping spring's bottom fixed mounting has the damping block, the opposite side surface fixed mounting of support base has the connecting plate, one side fixed mounting of connecting plate has the fixed plate, the bottom fixed mounting of fixed plate has the fixed block, the bottom welding of damping block has the welded plate, the bottom of welded plate is equipped with the seam.
Preferably, the fixing plate is parallel to the horizontal plane, the fixing block is fixed at the bottom of the fixing plate, and the bottom of the fixing block and the bottom of the damping block are located on the same horizontal plane.
Preferably, the bottom thread of the fixing plate is provided with a fastening bolt, and the fixing block is detachably connected with the fixing plate.
Preferably, a control panel is fixedly arranged on one side surface of the support frame shell, and the electric telescopic rods are electrically connected with the control panel.
Preferably, the electric telescopic rod penetrates through the inside of the extension plate, and the electric telescopic rod is fixedly connected with the support base.
Preferably, the screw rod and the limiting rod are both rotationally connected with the support frame shell and the device base, threaded holes are formed in the first pressure sensor and the second pressure sensor, and the screw rod is meshed with the threaded holes.
Preferably, the first pressure sensor and the second pressure sensor are uniformly distributed with a plurality of first fixing blocks and second fixing blocks along the circumference.
Preferably, the two sides of the support frame shell are provided with reserved holes, and the first fixing block and the second fixing block extend out of the reserved holes.
Preferably, a power supply is fixedly installed in the support frame shell, and the power supply is connected with the first pressure sensor, the second pressure sensor, the electric telescopic rod and the servo motor through wires.
The beneficial effects of the invention are as follows:
1. the invention not only can realize the hoisting function for deep well underground construction, but also can be used for deep well underground ore deposit monitoring and ground surface monitoring through the position of the pressure sensor arranged in the device, can monitor whether sedimentation occurs or not through the signal change of the pressure sensor, can also estimate the depth and scale of the sedimentation, has high measurement precision, and protects the safety of underground staff.
2. The support frame increases the contact point with the ground, enhances the use stability, does not generate the toppling phenomenon, is convenient to use, wherein the fixed plate is parallel to the horizontal plane, the fixed block is fixed at the bottom of the fixed plate, and the bottom of the fixed block and the bottom of the shock absorption block are positioned on the same plane, so that the toppling of the invention can be effectively prevented, the protection device is prevented from being damaged, and meanwhile, the safety of underground staff is also protected.
3. After the first fixing block and the second fixing block are clamped with the corresponding mineral seam, the pulling force measured by the first pressure sensor and the second pressure sensor is cleared, when the mineral seam is settled, the elastic surfaces of the first pressure sensor and the second pressure sensor are extruded, when the first pressure sensor and the second pressure sensor are subjected to pressure, the pressure monitor collects the pressure sensed by each first pressure sensor and each second pressure sensor in real time, monitors the pressure, prevents the collapse of the underground mineral seam, reminds underground workers to protect and evacuate in time.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the support leg of the present invention;
FIG. 3 is a schematic view of the internal structure of the support housing of the present invention;
fig. 4 is an enlarged view at a in fig. 1.
In the figure: 1. a support frame housing; 2. a servo motor; 3. a screw rod; 4. a first pressure sensor; 5. a device base; 6. a limit rod; 7. a first fixed block; 8. a second pressure sensor; 9. a pressure monitor; 10. a displacement monitor; 11. a second fixed block; 12. a hanging ring; 13. a support beam; 14. a moving block; 15. welding plates; 16. a mineral layer; 17. an extension plate; 18. an electric telescopic rod; 19. support legs; 20. a mounting block; 21. a mounting frame; 22. a fixing frame; 23. a support base; 24. a damper block; 25. a second fixing ring; 26. a damping spring; 27. a connecting plate; 28. a fixing plate; 29. a third fixed block; 30. a first fixing ring.
The specific embodiment is as follows:
example 1: as shown in fig. 1-4, the present embodiment adopts the following technical scheme: the utility model provides a deep well is hoist device for mining in pit, including support frame shell 1, the inside fixed mounting of support frame shell 1 is by servo motor 2, servo motor 2's bottom fixed mounting has lead screw 3, lead screw 3 fixed mounting is in support frame shell 1's inside, the outside cover of lead screw 3 has first pressure sensor 4, one side fixed mounting of lead screw 3 has gag lever post 6, lead screw 3 and gag lever post 6 all are connected with support frame shell 1 and device base 5 rotation, the screw hole has all been seted up in first pressure sensor 4 and second pressure sensor 8, and lead screw 3 meshes with the screw hole, make first pressure sensor 4 and second pressure sensor 8 can realize removing, gag lever post 6 runs through the inside of first pressure sensor 4, the bottom fixed mounting of gag lever post 6 has device base 5, the top of device base 5 is connected with the bottom of lead screw 3, the first pressure sensor 4 is fixedly provided with a first fixed block 7 at two sides, the second pressure sensor 8 is slidingly arranged below the first fixed block 7, the second fixed block 11 is fixedly arranged at two sides of the second pressure sensor 8, the pressure monitor 9 is arranged on one side surface of the support frame shell 1, the displacement monitor 10 is fixedly arranged at one side of the pressure monitor 9, the support beam 13 is fixedly arranged at the top of the support frame shell 1, the movable block 14 is slidingly arranged at the bottom of the support beam 13, the lifting ring 12 is fixedly arranged at the bottom of the movable block 14, the extension plate 17 is fixedly arranged at two sides of the middle part of the support frame shell 1, the electric telescopic rod 18 is fixedly arranged at the top of the extension plate 17, the supporting leg 19 is fixedly arranged at the bottom of the extension plate 17, the first fixed ring 30 is fixedly arranged on the outer surface of the supporting leg 19, the mounting frame 21 is fixedly arranged at two sides of the first fixed ring 30, the inside rotation of mounting bracket 21 installs support base 23, the one side of support base 23 rotates and installs mount 22, the fixed mounting of one side of mount 22 has second solid fixed ring 25, the outside in supporting leg 19 is nested to second solid fixed ring 25, the inside fixed mounting of supporting leg 19 has installation piece 20, the bottom fixed mounting of installation piece 20 has damping spring 26, damping spring 26's bottom fixed mounting has damping piece 24, the opposite side surface fixed mounting of support base 23 has connecting plate 27, one side fixed mounting of connecting plate 27 has fixed plate 28, the fastening bolt is installed to the bottom screw thread of fixed plate 28, and third fixed block 29 is connected with fixed plate 28 can dismantle, adjust the height, satisfy the underground seam 16 of various special unevenness, fixed plate 28 is parallel with the horizontal plane, and third fixed block 29 is fixed in the fixed plate 28 bottom, the bottom of third fixed block 29 and the bottom of damping piece 24 are located same horizontal plane, can effectually prevent that the invention from empting, protection device prevents to damage, the bottom fixed mounting of fixed plate 28 has third fixed block 29, the bottom of damping piece 24 welds the welded plate 15, the bottom of plate 15 is equipped with the seam 16.
The fixing plate 28 is parallel to the horizontal plane, the third fixing block 29 is fixed at the bottom of the fixing plate 28, and the bottom of the third fixing block 29 and the bottom of the shock absorbing block 24 are located at the same horizontal plane, so that the invention can be effectively prevented from falling down, and the protection device is prevented from being damaged.
The fastening bolts are installed on the bottom threads of the fixing plate 28, and the third fixing block 29 is detachably connected with the fixing plate 28 to adjust the height so as to meet various special uneven underground ore layers 16.
Wherein, a control panel is fixedly arranged on one side surface of the support frame shell 1, and the electric telescopic rods 18 are electrically connected with the control panel, so that the practicability of the invention is improved.
Wherein, electric telescopic rod 18 runs through the inside of extension board 17, and electric telescopic rod 18 and support base 23 fixed connection optimize overall structure.
The screw rod 3 and the limiting rod 6 are both rotationally connected with the support frame shell 1 and the device base 5, threaded holes are formed in the first pressure sensor 4 and the second pressure sensor 8, the screw rod 3 is meshed with the threaded holes, and the first pressure sensor 4 and the second pressure sensor 8 can move.
Wherein, a plurality of first fixed blocks 7 and second fixed blocks 11 are evenly distributed along circumference on the first pressure sensor 4 and the second pressure sensor 8, so that the stress of the first pressure sensor 4 and the second pressure sensor 8 is balanced and even, and the settlement condition of the same ore deposit 16 in a plurality of directions can be monitored simultaneously.
Wherein, the both sides of support frame shell 1 are excavated and are had the preformed hole, and first fixed block 7 and second fixed block 11 are stretched out by the preformed hole in, and when the deposit 16 takes place to subside in the pit, first fixed block 7 and second fixed block 11 can remove thereupon, conveniently monitor.
Wherein, support frame shell 1 internal fixation has the power, and power and first pressure sensor 4, second pressure sensor 8, electric telescopic handle 18 and servo motor 2 wire connection, conveniently controls, convenient operation, simple to use.
The use state of the invention is as follows: the equipment is placed at a designated position, firstly, the fixing plate 28 of the invention is parallel to the horizontal plane of the mineral seam 16, the third fixing block 29 is fixed at the bottom of the fixing plate 28, the bottom of the third fixing block 29 and the bottom of the shock absorbing block 24 are positioned at the same horizontal plane, the invention can be effectively prevented from toppling, the protection device is prevented from damage, then the electric telescopic rod 18 penetrates through the inside of the extension plate 17, the electric telescopic rod 18 is fixedly connected with the supporting base 23, the height is adjusted, various special uneven underground mineral seams 16 are met, then the bottom of the shock absorbing block 24 is fixedly provided with a rubber pad, and the bottoms of the rubber pads are all carved with anti-skid patterns, so that the anti-toppling performance of the invention is further improved, then the bottom of the fixing plate 28 is fixedly provided with a fastening bolt, and the third fixing block 29 is detachably connected with the fixing plate 28, so that the third fixing block 29 is convenient to replace, and the practicability of the invention is improved;
because the screw rod 3 and the limiting rod 6 are both rotationally connected with the support frame shell 1 and the device base 5, threaded holes are formed in the first pressure sensor 4 and the second pressure sensor 8, the screw rod 3 is meshed with the threaded holes, the first pressure sensor 4 and the second pressure sensor 8 can move, then the servo motor 2 is opened to enable the first pressure sensor 4 and the second pressure sensor 8 to move into a drilled hole to the deepest position along the screw rod 3 and the limiting rod 6, the pressure sensor can be smoothly put into the drill hole, the first fixed block 7 and the second fixed block 11 can be smoothly clamped with surrounding mineral layers 16, preformed holes are formed in two sides of the support frame shell 1, the first fixed block 7 and the second fixed block 11 extend out of the preformed holes, after the first fixed block 7 and the second fixed block 11 are clamped with the corresponding mineral layers 16, the measured tensile forces of the first pressure sensor 4 and the second pressure sensor 8 are cleared, when the mineral layers 16 are settled, the elastic surfaces of the first pressure sensor 4 and the second pressure sensor 8 are extruded, the first pressure sensor 4 and the second pressure sensor 8 are monitored by the pressure sensor 8, the pressure sensor 8 are monitored by the pressure sensors, and the underground pressure sensor 8 are monitored by the pressure sensors 9, and the underground pressure sensor is prevented from being safely sensed by the underground pressure sensors 8, and the workers are safely and well-sensed.
While the basic principles and main features of the present invention and advantages of the present invention have been shown and described, it will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a deep well is hoist device for mining in pit, includes support frame shell (1), its characterized in that: the utility model discloses a movable cross beam, including support frame shell (1), servo motor (2) are installed to the inside fixed mounting of support frame shell (1), servo motor (2) are installed to the bottom fixed mounting of bottom, lead screw (3) are installed in support frame shell (1) in a fixed way inside, the outside cover of lead screw (3) has first pressure sensor (4), one side fixed mounting of lead screw (3) has gag lever post (6), gag lever post (6) run through the inside of first pressure sensor (4), the bottom fixed mounting of gag lever post (6) has device base (5), the top of device base (5) is connected with the bottom of lead screw (3), the both sides fixed mounting of first pressure sensor (4) have first fixed block (7), the below slidable mounting of first fixed block (7) has second pressure sensor (8), the both sides fixed mounting of second pressure sensor (8) has second fixed block (11), one side surface mounting of support frame (1) has pressure monitor (9), one side surface mounting of pressure monitor (9) has device base (5), the top of support frame (1) is fixed mounting has crossbeam (13) of displacement, support frame (13) are installed to the bottom, the bottom of the moving block (14) is fixedly provided with a lifting ring (12), two sides of the middle part of the supporting frame shell (1) are fixedly provided with an extension plate (17), the top of the extension plate (17) is fixedly provided with an electric telescopic rod (18), the bottom of the extension plate (17) is fixedly provided with a supporting leg (19), the outer surface of the supporting leg (19) is fixedly provided with a first fixed ring (30), two sides of the first fixed ring (30) are fixedly provided with a mounting frame (21), the inside of the mounting frame (21) is rotatably provided with a supporting base (23), one side of the supporting base (23) is rotatably provided with a fixing frame (22), one side of the fixing frame (22) is fixedly provided with a second fixed ring (25), the second fixed ring (25) is sleeved outside the supporting leg (19), the inside of the supporting leg (19) is fixedly provided with a mounting block (20), the bottom of the mounting block (20) is fixedly provided with a damping spring (26), the bottom of the damping spring (26) is fixedly provided with a damping block (24), one side (27) is fixedly provided with a connecting plate (28), the bottom of the shock absorption block (24) is welded with a welding plate (15), and an ore bed (16) is arranged at the bottom of the welding plate (15).
2. A deep well underground mining hoisting device according to claim 1, characterized in that the fixing plate (28) is parallel to the horizontal plane, and the third fixing block (29) is fixed to the bottom of the fixing plate (28), and the bottom of the third fixing block (29) and the bottom of the shock absorbing block (24) are located on the same horizontal plane.
3. A deep well underground mining hoisting device according to claim 1, characterized in that the bottom of the fixing plate (28) is screw-mounted with fastening bolts, and the third fixing block (29) is detachably connected with the fixing plate (28).
4. The hoisting device for deep well underground mining according to claim 1, wherein a control panel is fixedly installed on one side surface of the support frame shell (1), and the electric telescopic rods (18) are electrically connected with the control panel.
5. A deep well underground mining hoisting device according to claim 1, characterized in that the electric telescopic rod (18) penetrates the inside of the extension plate (17), and the electric telescopic rod (18) is fixedly connected with the support base (23).
6. The hoisting device for deep well underground mining according to claim 1, wherein the screw rod (3) and the limiting rod (6) are rotationally connected with the support frame shell (1) and the device base (5), threaded holes are formed in the first pressure sensor (4) and the second pressure sensor (8), and the screw rod (3) is meshed with the threaded holes.
7. The hoisting device for deep well underground mining according to claim 1, wherein the first pressure sensor (4) and the second pressure sensor (8) are uniformly distributed with a plurality of first fixing blocks (7) and second fixing blocks (11) along the circumference.
8. The hoisting device for deep well underground mining according to claim 1, wherein the two sides of the support frame shell (1) are provided with reserved holes, and the first fixing block (7) and the second fixing block (11) extend out of the reserved holes.
9. The hoisting device for deep well underground mining according to claim 1, wherein a power supply is fixedly installed in the support frame shell (1), and the power supply is connected with the first pressure sensor (4), the second pressure sensor (8), the electric telescopic rod (18) and the servo motor (2) through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235691.5A CN112209253B (en) | 2020-11-09 | 2020-11-09 | Hoisting device for deep well underground mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235691.5A CN112209253B (en) | 2020-11-09 | 2020-11-09 | Hoisting device for deep well underground mining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112209253A CN112209253A (en) | 2021-01-12 |
| CN112209253B true CN112209253B (en) | 2024-03-01 |
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ID=74056653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011235691.5A Active CN112209253B (en) | 2020-11-09 | 2020-11-09 | Hoisting device for deep well underground mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112209253B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208516818U (en) * | 2018-07-30 | 2019-02-19 | 陇东学院 | A kind of well head well testing lifting traction integrated apparatus |
| CN209081368U (en) * | 2018-11-30 | 2019-07-09 | 何宇涵 | A kind of mining bucket lifting device that vertical shaft mining is high with stability |
| CN209161332U (en) * | 2018-12-06 | 2019-07-26 | 张世千 | One kind being used for Hydraulic hoisting machine for loading and unloading equipment and material in underground coal mine |
| CN211496610U (en) * | 2020-01-06 | 2020-09-15 | 重庆城市职业学院 | Hoisting device for underground mining |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100724715B1 (en) * | 2006-07-21 | 2007-06-04 | 한국고벨주식회사 | Hoist for low space crane |
-
2020
- 2020-11-09 CN CN202011235691.5A patent/CN112209253B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208516818U (en) * | 2018-07-30 | 2019-02-19 | 陇东学院 | A kind of well head well testing lifting traction integrated apparatus |
| CN209081368U (en) * | 2018-11-30 | 2019-07-09 | 何宇涵 | A kind of mining bucket lifting device that vertical shaft mining is high with stability |
| CN209161332U (en) * | 2018-12-06 | 2019-07-26 | 张世千 | One kind being used for Hydraulic hoisting machine for loading and unloading equipment and material in underground coal mine |
| CN211496610U (en) * | 2020-01-06 | 2020-09-15 | 重庆城市职业学院 | Hoisting device for underground mining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112209253A (en) | 2021-01-12 |
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