CN111689418B - Automatic-locking and uniform-rope-winding winch for ship - Google Patents
Automatic-locking and uniform-rope-winding winch for ship Download PDFInfo
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- CN111689418B CN111689418B CN202010583182.5A CN202010583182A CN111689418B CN 111689418 B CN111689418 B CN 111689418B CN 202010583182 A CN202010583182 A CN 202010583182A CN 111689418 B CN111689418 B CN 111689418B
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- gear
- fixedly connected
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- rope
- tooth
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
- B66D1/74—Capstans
- B66D1/7442—Capstans having a horizontal rotation axis
- B66D1/7447—Capstans having a horizontal rotation axis driven by motor only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
- B66D1/74—Capstans
- B66D1/7463—Accessories
- B66D1/7468—Handles
- B66D1/7473—Handles with locking means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
- B66D1/74—Capstans
- B66D1/7484—Details concerning gearing arrangements, e.g. multi-speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Means For Catching Fish (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to the technical field of ship lifting equipment, and discloses an automatic-locking and uniform-rope-winding winch for a ship. Through the movable block in the self-locking mechanism because centrifugal force can stimulate the expansion of movable connecting rod, the movable block meshes with outside internal gear structure, because both are ratchet, so can die and pin to reached and can be when equipment breaks down, self-locking mechanism is triggered automatically when the heavy object drops, pin the serving roll rope axle and prevent that the heavy object from dropping and cause the effect of injury to hull and personnel.
Description
Technical Field
The invention relates to the technical field of ship lifting equipment, in particular to a winch which is used for automatically locking a ship and uniformly winding a rope.
Background
The winch is a machine which is provided with a vertically-installed winch drum and can wind the rope without storing the rope under the driving of power, and a large number of winches are used on ships, are mainly used for lifting heavy objects such as fishing nets and the like occupying space and are also used for fixing a ship body on the shore.
But the winch on the existing market can not automatically and uniformly wind the rope, so that the rope can be knotted when being reeled again, the winch needs to be manually loosened when being used next time, the working time is prolonged, the working efficiency is reduced, and the damage of the winch can be caused by natural factors such as sea waves when the ship runs on the sea surface, but the damage of the winch is caused by dropping heavy objects due to the absence of the self-locking device to the ship body and personnel.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an automatic-locking and uniform-rope-winding winch for a ship, which has the advantages that the rope can be automatically wound, the rope is uniformly distributed on a rope winding shaft in the rope winding process to prevent the rope from knotting, and when equipment fails due to external factors, a self-locking mechanism can be automatically triggered to lock the rope winding shaft, so that the damage to a ship body and personnel due to falling of heavy objects is prevented.
(II) technical scheme
In order to realize the purpose that the rope can be automatically coiled, the rope is uniformly distributed on the rope coiling shaft in the rope coiling process to prevent the rope from knotting, and when equipment breaks down due to external factors, the self-locking mechanism can be automatically triggered to lock the rope coiling shaft, so that a heavy object is prevented from falling to cause damage to a ship body and personnel, the invention provides the following technical scheme: a winch used for automatic locking and uniform rope winding of a ship comprises a bottom plate, wherein threaded holes are formed in the surface of the periphery of the bottom plate, a power box is fixedly connected to the side surface of the bottom plate, a mounting frame is fixedly connected to the middle of the upper surface of the bottom plate, a first motor is fixedly connected to the bottom of the power box, a first transmission gear is fixedly connected to the outer side of the first motor, a rope winding shaft is fixedly connected to the circle center of the first transmission gear, a steel wire rope is fixedly connected to the surface of the rope winding shaft, a transmission belt is movably connected to the surface of the first transmission gear, a second transmission gear is movably connected to one end, away from the first transmission gear, of the transmission belt, a steering gear is connected to the outer side of the second transmission gear in a meshed mode, a third transmission gear is connected to the lower side of the steering gear in a meshed mode, and a threaded rod is fixedly connected to the circle center of the third transmission gear, the surface of the threaded rod is connected with an internal thread sleeve in a meshed mode, the surface of the internal thread sleeve is fixedly connected with a wire guide rod, the left end of the upper surface of the bottom plate is fixedly connected with a wire inlet groove, and one end, far away from the first transmission gear, of the rope winding shaft is fixedly connected with a self-locking mechanism.
Preferably, the mounting bracket comprises two side plates and a base plate, a large round hole and a small round hole are formed in the surfaces of the side plates, the diameter of the large round hole is equal to that of the rotating shaft of the rope rolling shaft, and the diameter of the small round hole is equal to that of the threaded rod.
Preferably, the front end of the base plate of the mounting frame is provided with a slide rail groove, the bottom end of the wire rod is fixedly connected with a slide roller, and the slide roller and the slide rail groove on the base plate of the mounting frame are on the same vertical line and are movably connected.
Preferably, the steering gear consists of a full-tooth gear and two half-tooth gears, the full-tooth gears are mutually meshed, the two half-tooth gears are fixedly connected to the circle center of the full-tooth gear, the diameter of each half-tooth gear is smaller than that of each full-tooth gear, the second transmission gear is meshed with the full-tooth gear of the steering gear, and the gear ratio of the second transmission gear to the full-tooth gear is 1: 20.
Preferably, the third transmission gear is meshed with a half-gear-tooth gear of the steering gear, and the gear ratio of the third transmission gear to the half-gear-tooth gear is 1: 10.
Preferably, the top end of the wire guide rod is fixedly connected with a circular threading through hole, the diameter of the threading through hole is larger than that of the steel wire rope, the wire inlet groove is a square wire inlet hole, and the bottom end of the wire inlet groove is welded with the bottom plate.
Preferably, the self-locking mechanism comprises a rotating shaft part and an inner gear part, the rotating shaft part is rotatably connected to the center of the inner gear part, a movable connecting rod is fixedly connected to the rotating shaft, a spring is fixedly connected to the middle of the movable connecting rod, a movable block is rotatably connected to the other end of the movable connecting rod, gear teeth are arranged on the surface of the movable block, the rotating shaft part is fixedly connected with the rope winding shaft, the inner gear part is fixedly connected with the mounting frame, the inner gear is a ratchet wheel, and the gear teeth on the surface of the movable block are ratchet wheels.
(III) advantageous effects
Compared with the prior art, the invention provides the winch for automatically locking and uniformly winding the rope for the ship, which has the following beneficial effects:
1. the winch for automatically locking and uniformly winding the rope for the ship drives the first transmission gear to rotate through the rotation of the motor, the first transmission gear drives the rope winding shaft to start rotating, the first transmission gear is connected with the second transmission gear through the transmission belt, the second transmission gear is meshed with the steering gear, the steering gear consists of two full-tooth gears which are meshed with each other and two half-tooth gears fixedly connected to the circle center of the full-tooth gears, the diameter of each half-tooth gear is smaller than that of the full-tooth gears, the second transmission gear is meshed with the full-tooth gears of the steering gear, the gear ratio of the second transmission gear to the full-tooth gears of the steering gear is 1:20, the third transmission gear is meshed with the half-tooth gears of the steering gear, the gear ratio of the third transmission gear to the half-tooth gears is 1:10, so that the third transmission gear can rotate forwards and reversely, the third transmission gear drives the threaded rod to rotate forwards and reversely, the internal thread sleeve is meshed with the threaded rod, the lead rod is fixedly connected to the internal thread sleeve, therefore, the wire guide rod can move forward or move backward, so that the wire harness is uniformly wound on the winding shaft, the problem that the wire harness is knotted when being wound is solved, troubles are brought to reuse, the time for arranging the wire harness is saved, and the working efficiency is improved.
2. This a capstan winch that is used for automatic locking of boats and ships and even serving as go-between, through the movable block in the self-locking mechanism because centrifugal force can stimulate the expansion of movable connecting rod, the movable block meshes with outside internal gear structure, because both are ratchet, so can die and pin to reach and can be when equipment breaks down, self-locking mechanism is triggered automatically when the heavy object drops, pins the serving shaft and prevents that the heavy object from dropping and causing the effect of injury to hull and personnel.
Drawings
FIG. 1 is a perspective view of the winch of the present invention;
FIG. 2 is a schematic top plan and partial cross-sectional structural view of the winch of the present invention;
FIG. 3 is a schematic view of the winch rope winding mechanism according to the present invention;
FIG. 4 is a schematic view of the structure of the transmission mechanism of the present invention;
FIG. 5 is a schematic view of the structure of the wire guide bar and the wire inlet groove of the present invention;
fig. 6 is a schematic structural view of the self-locking mechanism of the present invention.
In the figure: 1. a base plate; 2. a threaded hole; 3. a power box; 4. a mounting frame; 5. a motor; 6. a first transmission gear; 7. a rope winding shaft; 8. a wire rope; 9. a drive belt; 10. a second transmission gear; 11. a steering gear; 12. a third transmission gear; 13. a threaded rod; 14. an internal thread sleeve; 15. a wire guide rod; 16. a wire inlet groove; 17. a self-locking mechanism.
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. 1-6, a winch for automatically locking and uniformly winding a rope for a ship comprises a bottom plate 1, threaded holes 2 are formed in the peripheral surface of the bottom plate 1, a power box 3 is fixedly connected to the side surface of the bottom plate 1, an installation frame 4 is fixedly connected to the middle of the upper surface of the bottom plate 1, the installation frame 4 is composed of two side plates and a base plate, a large round hole and a small round hole are formed in the surface of each side plate, the diameter of the large round hole is equal to that of a rotating shaft of a rope winding shaft 7, and the diameter of the small round hole is equal to that of a threaded rod 13. The front end of the base plate of the mounting frame 4 is provided with a slide rail groove, the bottom end of the wire guide rod 15 is fixedly connected with a slide roller, and the slide roller and the slide rail groove on the base plate of the mounting frame 4 are on the same vertical line and are movably connected. The bottom of the power box 3 is fixedly connected with a first motor 5, the outer side of the first motor 5 is fixedly connected with a first transmission gear 6, the circle center of the first transmission gear 6 is fixedly connected with a rope winding shaft 7, the surface of the rope winding shaft 7 is fixedly connected with a steel wire rope 8, the surface of the first transmission gear 6 is movably connected with a transmission belt 9, one end, away from the first transmission gear 6, of the transmission belt 9 is movably connected with a second transmission gear 10, the outer side of the second transmission gear 10 is in meshing connection with a steering gear 11, the steering gear 11 is composed of a full-tooth gear and two half-tooth gears fixedly connected to the circle center of the full-tooth gear, the diameter of the half-tooth gears is smaller than that of the full-tooth gear, the second transmission gear 10 is in meshing engagement with the full-tooth gear of the steering gear 11, and the gear ratio of the two is 1: 20.
A third transmission gear 12 is connected below the steering gear 11 in a meshed mode, the third transmission gear 12 is meshed with a half-gear-tooth gear of the steering gear 11, and the gear ratio of the third transmission gear to the half-gear-tooth gear is 1: 10. A threaded rod 13 is fixedly connected to the center of a circle of the third transmission gear 12, an internal thread sleeve 14 is connected to the surface of the threaded rod 13 in a meshed mode, a wire guide rod 15 is fixedly connected to the surface of the internal thread sleeve 14, a round threading through hole is fixedly connected to the top end of the wire guide rod 15, the diameter of the threading through hole is larger than that of the steel wire rope 8, the wire inlet groove 16 is a square wire inlet hole, and the bottom end of the wire inlet groove 16 is welded to the bottom plate 1. The left end fixedly connected with wire inlet groove 16 of bottom plate 1 upper surface, the one end fixedly connected with self-locking mechanism 17 that the serving axle 7 kept away from drive gear 6. The self-locking mechanism 17 is composed of a rotating shaft part and an inner gear part, the rotating shaft part is rotatably connected to the center of the inner gear part, a movable connecting rod is fixedly connected to the rotating shaft, a spring is fixedly connected to the middle of the movable connecting rod, the other end of the movable connecting rod is rotatably connected with a movable block, gear teeth are arranged on the surface of the movable block, the rotating shaft part is fixedly connected with the rope winding shaft 7, the inner gear part is fixedly connected with the mounting frame 4, the inner gear is a ratchet wheel, and the gear teeth on the surface of the movable block are ratchet wheels.
The working principle is as follows: when a heavy object needs to be wound and lifted, the motor 5 is started, the motor 5 rotates to drive the first transmission gear 6 to rotate, the first transmission gear 6 drives the rope winding shaft 7 to start rotating, the first transmission gear 6 is connected with the second transmission gear 10 through the transmission belt 9, the second transmission gear 10 is meshed with the steering gear 11, the steering gear 11 consists of two full-tooth gears which are meshed with each other and two half-tooth gears which are fixedly connected to the circle center of the full-tooth gears, the diameter of each half-tooth gear is smaller than that of each full-tooth gear, the second transmission gear 10 is meshed with the full-tooth gears of the steering gear 11, the gear ratio of the two half-tooth gears is 1:20, the third transmission gear 12 is meshed with the half-tooth gears of the steering gear 11, the gear ratio of the two half-tooth gears is 1:10, so that the third transmission gear 12 can rotate forwards and backwards, the third transmission gear 12 drives the threaded rod 13 to rotate forwards and backwards, the threaded rod sleeve 14 is meshed with the threaded rod 13, wire rod 15 fixed connection is on internal thread cover 14, so wire rod 15 can advance or retreat, makes the pencil twine on the spool uniformly, when drive mechanism breaks down, and the heavy object can stimulate the rope and fall down fast, and the movable block in self-locking mechanism 17 can stimulate movable connecting rod because centrifugal force to expand this moment, and the movable block meshes with outside internal gear structure, because both are ratchet, so can die pin, prevents that the heavy object from dropping.
In summary, the winch for automatically locking and uniformly winding the rope for the ship drives the first transmission gear 6 to rotate through the rotation of the motor 5, the first transmission gear 6 drives the rope winding shaft 7 to start rotating, the first transmission gear 6 is connected with the second transmission gear 10 through the transmission belt 9, the second transmission gear 10 is meshed with the steering gear 11, the steering gear 11 consists of two full-tooth gears which are meshed with each other and two half-tooth gears which are fixedly connected to the circle center of the full-tooth gears, the diameter of the half-tooth gears is smaller than that of the full-tooth gears, the second transmission gear 10 is meshed with the full-tooth gears of the steering gear 11, the gear ratio of the two half-tooth gears is 1:20, the gear ratio of the third transmission gear 12 is meshed with the half-tooth gears of the steering gear 11, the gear ratio of the two half-tooth gears is 1:10, so that the third transmission gear 12 can rotate forwards and backwards, the third transmission gear 12 drives the threaded rod 13 to rotate forwards and backwards, the internal thread sleeve 14 meshes on threaded rod 13, and lead wire pole 15 fixed connection is on internal thread sleeve 14, so lead wire pole 15 can advance or retreat, makes the pencil twine on the spool uniformly to reached and prevented that the pencil from knoing when receiving the line, brought the puzzlement for reuse, practiced thrift the time of arrangement pencil, improved work efficiency's effect.
This a capstan winch that is used for automatic locking of boats and ships and even serving as go-between, through the movable block in self-locking mechanism 17 because centrifugal force can stimulate the expansion of movable connecting rod, the movable block meshes with outside internal gear structure, because both are ratchet, so can die and pin to reach and to have reached when equipment breaks down, self-locking mechanism 17 of auto-trigger when the heavy object drops, pin serving shaft 7 and prevent that the heavy object from dropping and cause the effect of injury to hull and personnel.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Winch for the automatic locking and uniform rope winding of ships, comprising a base plate (1), characterized in that: threaded holes (2) are formed in the peripheral surface of the bottom plate (1), a power box (3) is fixedly connected to the side face of the bottom plate (1), a mounting frame (4) is fixedly connected to the middle of the upper surface of the bottom plate (1), a first motor (5) is fixedly connected to the bottom of the power box (3), a first transmission gear (6) is fixedly connected to the outer side of the first motor (5), a rope winding shaft (7) is fixedly connected to the circle center of the first transmission gear (6), a steel wire rope (8) is fixedly connected to the surface of the rope winding shaft (7), a transmission belt (9) is movably connected to the surface of the first transmission gear (6), a second transmission gear (10) is movably connected to one end, away from the first transmission gear (6), of the transmission belt (9), and a steering gear (11) is meshed to the outer side of the second transmission gear (10), a third transmission gear (12) is connected below the steering gear (11) in a meshed manner, a threaded rod (13) is fixedly connected to the center of the third transmission gear (12), an internal thread sleeve (14) is connected to the surface of the threaded rod (13) in a meshed manner, a wire guide rod (15) is fixedly connected to the surface of the internal thread sleeve (14), a wire inlet groove (16) is fixedly connected to the left end of the upper surface of the bottom plate (1), a self-locking mechanism (17) is fixedly connected to one end, away from the first transmission gear (6), of the rope winding shaft (7), the steering gear (11) is composed of two full-tooth gears which are meshed with each other and two half-tooth gears which are fixedly connected to the center of the full-tooth gears, the diameter of each half-tooth gear is smaller than that of each full-tooth gear, the second transmission gear (10) is meshed with the full-tooth gears of the steering gear (11), and the gear ratio of the two half-tooth gears is 1:20, the third transmission gear (12) is meshed with a half-tooth gear of the steering gear (11), the gear ratio of the third transmission gear to the half-tooth gear is 1:10, the self-locking mechanism (17) is composed of a rotating shaft part and an inner gear part, the rotating shaft part is rotatably connected to the center of the inner gear part, a movable connecting rod is fixedly connected to the rotating shaft, a spring is fixedly connected to the middle of the movable connecting rod, the other end of the movable connecting rod is rotatably connected with a movable block, gear teeth are arranged on the surface of the movable block, the rotating shaft part is fixedly connected with the rope winding shaft (7), the inner gear part is fixedly connected with the mounting frame (4), the inner gear is a ratchet wheel, and the gear teeth on the surface of the movable block are ratchet teeth.
2. An auto-locking and uniform rope reel for a marine vessel as claimed in claim 1, wherein: the mounting bracket (4) is composed of two side plates and a base plate, the surface of each side plate is provided with a large round hole and a small round hole, the diameter of the large round hole is equal to that of the rotating shaft of the rope winding shaft (7), and the diameter of the small round hole is equal to that of the threaded rod (13).
3. An auto-locking and uniform rope reel for a marine vessel as claimed in claim 1, wherein: the guide wire device is characterized in that a slide rail groove is formed in the front end of the base plate of the mounting frame (4), a slide roller is fixedly connected to the bottom end of the guide wire rod (15), and the slide roller and the slide rail groove in the base plate of the mounting frame (4) are movably connected on the same vertical line.
4. An auto-locking and uniform rope reel for a marine vessel as claimed in claim 1, wherein: the wire guide rod is characterized in that a round threading through hole is fixedly connected to the top end of the wire guide rod (15), the diameter of the threading through hole is larger than that of the steel wire rope (8), the wire inlet groove (16) is a square wire inlet hole, and the bottom end of the wire inlet groove (16) is welded with the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583182.5A CN111689418B (en) | 2020-06-24 | 2020-06-24 | Automatic-locking and uniform-rope-winding winch for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583182.5A CN111689418B (en) | 2020-06-24 | 2020-06-24 | Automatic-locking and uniform-rope-winding winch for ship |
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| Publication Number | Publication Date |
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| CN111689418A CN111689418A (en) | 2020-09-22 |
| CN111689418B true CN111689418B (en) | 2022-04-01 |
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| CN202010583182.5A Active CN111689418B (en) | 2020-06-24 | 2020-06-24 | Automatic-locking and uniform-rope-winding winch for ship |
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| CN (1) | CN111689418B (en) |
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| CN112173798A (en) * | 2020-10-11 | 2021-01-05 | 浙江美来亚纺织有限公司 | Textile machinery's design trimming equipment |
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| CN114455494B (en) * | 2021-06-01 | 2023-11-21 | 中嘉建盛建工集团有限公司 | Assembled building board hoist device |
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| CN114590730A (en) * | 2022-04-06 | 2022-06-07 | 如皋市武源机械有限公司 | Heavy coaxial winch |
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|---|---|---|---|---|
| DE3832192A1 (en) * | 1988-01-15 | 1989-07-27 | Broehl Gmbh & Co Ohg Maschf | Rope-coiling device with correction means for the rope guidance |
| JP2003252573A (en) * | 2002-02-28 | 2003-09-10 | Nikko Kizai Kk | Winch device |
| CN202322160U (en) * | 2011-11-21 | 2012-07-11 | 哈尔滨工程大学 | Mechanical winch automatic reversing cable spooler mechanism |
| CN204324781U (en) * | 2014-12-08 | 2015-05-13 | 薛文全 | Automatic rope guide of hoist |
| CN104891366A (en) * | 2015-06-19 | 2015-09-09 | 济南大学 | Steel wire rope arranging device based on gear reversing |
| CN206156649U (en) * | 2016-11-14 | 2017-05-10 | 尤道济 | Row of colliery winch collection device that restricts |
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2020
- 2020-06-24 CN CN202010583182.5A patent/CN111689418B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3832192A1 (en) * | 1988-01-15 | 1989-07-27 | Broehl Gmbh & Co Ohg Maschf | Rope-coiling device with correction means for the rope guidance |
| JP2003252573A (en) * | 2002-02-28 | 2003-09-10 | Nikko Kizai Kk | Winch device |
| CN202322160U (en) * | 2011-11-21 | 2012-07-11 | 哈尔滨工程大学 | Mechanical winch automatic reversing cable spooler mechanism |
| CN204324781U (en) * | 2014-12-08 | 2015-05-13 | 薛文全 | Automatic rope guide of hoist |
| CN104891366A (en) * | 2015-06-19 | 2015-09-09 | 济南大学 | Steel wire rope arranging device based on gear reversing |
| CN206156649U (en) * | 2016-11-14 | 2017-05-10 | 尤道济 | Row of colliery winch collection device that restricts |
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| Publication number | Publication date |
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| CN111689418A (en) | 2020-09-22 |
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