CN106744426B - Parallel drum type friction rope-changing winch - Google Patents
Parallel drum type friction rope-changing winch Download PDFInfo
- Publication number
- CN106744426B CN106744426B CN201710076301.6A CN201710076301A CN106744426B CN 106744426 B CN106744426 B CN 106744426B CN 201710076301 A CN201710076301 A CN 201710076301A CN 106744426 B CN106744426 B CN 106744426B
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- roller
- driving
- rope
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- driven
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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
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- 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
- B66D1/30—Rope, cable, or chain drums or barrels
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- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
Abstract
The invention discloses a parallel drum type friction rope-changing winch, which comprises: a driving roller (1), a steel wire rope braking mechanism (2), a driven roller (3), a transmission mechanism (5) and a roller braking mechanism (6) which are arranged on a rack (4); the driving roller (1) and the driven roller (3) are arranged in parallel, the driven roller (3) is linked by a transmission mechanism (5), and a roller braking mechanism (6) is positioned on one side of the rack (4) and on the outer edge of one end of the driving roller (1); the steel wire rope braking mechanism (2) surrounds the driving roller (1) and the driven roller (3) from the outer side, and two ends of the steel wire rope braking mechanism are connected with the bottom of the rack (4); the invention can realize the operations of rope winding, rope unwinding, lifting, traction and the like in the rope replacing operation in the limited mine rope replacing field space, can ensure the safety of the rope replacing and improve the efficiency of the rope replacing operation.
Description
Technical Field
The invention relates to a parallel drum type friction rope changing winch, and belongs to the technical field of lifting and transportation.
Background
In the production process of mines, the replacement of various steel wire ropes is a complex and important work. At present, no professional device for replacing the wire ropes is provided when various wire ropes are replaced in a mine, and other general equipment such as a stable vehicle is mostly adopted for replacing the wire ropes, so that the wire ropes are wound and unwound.
However, the alternative devices are distributed in arrangement, large in occupied area and single in function, and the combination and comprehensive protection function of the system are lacked during rope changing, so that the potential safety hazard is more during the rope changing work, and the rope changing efficiency is lower.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a parallel drum type friction rope-changing winch which can realize the operations of quick and safe rope winding, rope unwinding, lifting, traction and the like in the rope-changing operation in a limited mine rope-changing field space.
In order to achieve the purpose, the invention adopts the technical scheme that: a parallel drum type friction rope-changing winch comprises: the driving roller, the steel wire rope braking mechanism, the driven roller, the transmission mechanism and the roller braking mechanism are arranged on the rack;
the driving roller and the driven roller are arranged in parallel, the driven roller is linked by a transmission mechanism, and the roller braking mechanism is positioned on one side of the rack and on the outer edge of one end of the driving roller;
the steel wire rope braking mechanism surrounds the driving roller and the driven roller from the outer side, and two ends of the steel wire rope braking mechanism are connected with the bottom of the rack;
the steel wire rope penetrates through the middle of the guide roller of the guide plate at one end of the rack, and after the steel wire rope is integrally wound around the outer sides of the driving roller and the driven roller for a plurality of circles, the steel wire rope penetrates out of the middle of the guide roller of the guide plate at the other end of the rack.
The driving roller consists of a driving motor, a driving cylinder body, a friction lining block, a driving gear ring and a half shaft;
the driving roller is in a cylindrical shape, and the outer layer of the driving roller is spliced and coated by the friction lining blocks; the driving motor is arranged in the driving cylinder, the rotating part of the driving motor is fixedly connected with the driving cylinder, and the fixed part of the driving motor protrudes out of one side of the driving cylinder and is fixedly connected with the rack;
the other side of the driving cylinder is fixedly connected with one end of a half shaft, and the other end of the half shaft protrudes out of the driving cylinder and is connected with a rack rotary support;
the driving gear ring is a circular ring-shaped outer gear ring and is fixedly connected with one end of the driving cylinder body.
The friction lining cushion block is a powder die-cast wear-resistant material rectangular block, a semicircular groove is formed in one side of the friction lining cushion block, and a plurality of circles of annular semicircular grooves are formed in the outer layer of the driving roller after splicing.
The driven roller comprises a driven cylinder body, a friction lining block, a driven gear ring and a long shaft;
the driven roller is in a cylindrical shape, and the outer layer of the driven roller is spliced and coated by the friction lining blocks; the friction lining cushion block is a powder die-cast rectangular block made of wear-resistant materials, a semicircular groove is formed in one side of the friction lining cushion block, and a plurality of circles of annular semicircular grooves are formed in the outer layer of the driven roller after splicing;
the long shaft is fixedly connected with the driven cylinder, and two ends of the long shaft protrude out of two sides of the driven cylinder and are connected with the rack rotary support;
the driven gear ring is a circular outer gear ring and is fixedly connected with one end of the driven cylinder.
The transmission mechanism consists of a transmission shaft and a transmission gear; the transmission shaft is fixedly connected with the transmission gear, two ends of the transmission shaft are connected with the rack rotary support, and the transmission gear is matched with the driving gear ring and the driven gear ring.
The drum braking mechanism adopts a disc brake, the base of the disc brake is fixedly connected with the frame, and the brake disc brakes the outer edge of one end of the driving drum.
The steel wire rope braking mechanism comprises a tensioning oil cylinder, a rope pressing roller, a pin shaft and a chain plate;
the rope pressing roller is connected with the chain plate in an inserting mode through a pin shaft to form a double-row roller chain;
one end of the chain is connected with the bottom surface of the rack through a pin shaft, the other end of the chain is connected with the piston rod end of the tensioning oil cylinder through a pin shaft after the chain winds the driving roller and the driven roller, and the tail end of the tensioning oil cylinder is connected with the rack through a pin shaft.
The frame consists of a bottom frame, a left side plate, a right side plate, a front guide plate and a rear guide plate;
the bottom frame and the left side plate are welded into a whole, the bottom surface of the right side plate is connected with the bottom frame through bolts, the front guide plate and the rear guide plate are connected with the left side plate and the right side plate through bolts, and a group of guide rollers are respectively arranged on the front guide plate and the rear guide plate.
Compared with the existing general equipment: the invention can keep the rope inlet and outlet positions of the steel wire rope wound on the two rollers unchanged during operation, and the steel wire rope is not accumulated on the device, so that the length of the rope which is wound and unwound by the device is not limited;
after the steel wire rope is wound on the two rollers for a plurality of circles, enough friction force is generated between the steel wire rope and the friction liner block on the rollers, so that proper rope retracting tension is generated in the rope changing work;
the steel wire rope braking mechanism and the roller braking mechanism can prevent the steel wire rope from slipping on the roller and the device from stalling when the rope is replaced;
meanwhile, the invention can better adapt to the limited space of the mine rope changing site through the compact structure and the comprehensive performance, ensure the safety of rope changing and improve the efficiency of the rope changing work.
Drawings
FIG. 1 is an overall assembly view of the present invention;
FIG. 2 is a view showing the working state of the present invention when the wire rope is wound;
FIG. 3 is an assembly view of the drive roller of the present invention;
FIG. 4 is an assembly view of the driven drum of the present invention;
FIG. 5 is an assembly view of the transmission of the present invention;
FIG. 6 is an assembly view of the wire rope brake mechanism of the present invention;
fig. 7 is an assembly view of the frame of the present invention.
In the figure, 1, a driving roller, 2, a steel wire rope braking mechanism, 3, a driven roller, 4, a frame, 5, a transmission mechanism, 6, a roller braking mechanism, 7, a steel wire rope, 8, a driving motor, 9, a driving roller, 10, a friction lining block, 11, a driving gear ring, 12, a half shaft, 13, a driven roller, 14, a driven gear ring, 15, a long shaft, 16, a transmission shaft, 17, a transmission gear, 18, a tensioning cylinder, 19, a rope pressing roller, 20, a chain plate, 21, a pin shaft, 22, a left side plate, 23, a front guide plate, 24, a bottom frame, 25, a right side plate, 26 and a rear guide plate.
Detailed Description
The invention will be further explained with reference to the drawings.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 and 2: the invention relates to a parallel drum type friction rope-changing winch, comprising: the device comprises a driving roller 1, a steel wire rope braking mechanism 2, a driven roller 3, a transmission mechanism 5 and a roller braking mechanism 6 which are arranged on a rack;
the driving roller 1 and the driven roller 3 are arranged in parallel, the driven roller 3 is linked by a transmission mechanism 5, and a roller braking mechanism 6 is positioned on one side of the rack 4 and on the outer edge of one end of the driving roller 1;
the steel wire rope braking mechanism 2 surrounds the driving roller 1 and the driven roller 3 from the outer side, and two ends of the steel wire rope braking mechanism are connected with the bottom of the rack 4;
the steel wire rope 7 penetrates through the middle of the guide roller of the guide plate at one end of the rack 4, and after being integrally wound for a plurality of circles around the outer sides of the driving roller 1 and the driven roller 3, the steel wire rope penetrates out of the middle of the guide roller of the guide plate at the other end of the rack 4.
As shown in fig. 3: the driving roller 1 consists of a driving motor 8, a driving cylinder 9, a friction lining block 10, a driving gear ring 11 and a half shaft 12;
the driving roller 1 is in a cylindrical shape, and the outer layer of the driving roller is spliced and coated by the friction lining blocks 10; the driving motor 8 is arranged in the driving cylinder 9, the rotating part of the driving motor 8 is fixedly connected with the driving cylinder 9, and the fixed part of the driving motor 8 protrudes out of one side of the driving cylinder 9 and is fixedly connected with the rack 4;
the other side of the driving cylinder 9 is fixedly connected with one end of a half shaft 12, and the other end of the half shaft 12 protrudes out of the driving cylinder 9 and is connected with the rack 4 in a rotary support way;
the driving gear ring 11 is a circular outer gear ring and is fixedly connected with one end of the driving cylinder 9;
the friction lining cushion block 10 is a powder die-cast rectangular block made of wear-resistant materials, a semicircular groove is formed in one side of the friction lining cushion block, and a plurality of circles of annular semicircular grooves are formed in the outer layer of the driving roller 9 after splicing.
As shown in fig. 4: the driven roller 3 comprises a driven cylinder body 13, a friction lining block 10, a driven gear ring 14 and a long shaft 15;
the driven roller 3 is in a cylindrical shape, and the outer layer of the driven roller is spliced and coated by a friction lining block 10; the friction lining cushion block 10 is a powder die-cast rectangular block made of wear-resistant materials, a semicircular groove is formed in one side of the friction lining cushion block, and a plurality of circles of annular semicircular grooves are formed in the outer layer of the driven roller 3 after splicing;
the long shaft 15 is fixedly connected with the driven cylinder 13, and two ends of the long shaft protrude out of two sides of the driven cylinder 13 and are connected with the rack 4 in a rotary supporting manner;
the driven gear ring 14 is a circular ring-shaped outer gear ring and is fixedly connected with one end of the driven cylinder body 13.
As shown in fig. 5: the transmission mechanism 5 consists of a transmission shaft 16 and a transmission gear 17; the transmission shaft 16 is fixedly connected with a transmission gear 17, two ends of the transmission shaft are connected with the rack 4 in a rotary supporting manner, and the transmission gear 17 is matched with the driving gear ring 11 and the driven gear ring 14;
as shown in fig. 1 and 2: the roller braking mechanism 6 adopts a device disc brake, the base of the device disc brake is fixedly connected with the frame 4, and the brake disc brakes the outer edge of one end of the driving roller 1.
As shown in fig. 6: the steel wire rope braking mechanism 2 comprises a tensioning oil cylinder 18, a rope pressing roller 19, a pin shaft 21 and a chain plate 20;
the rope pressing roller 19 is connected with the chain plate 20 in a penetrating way through a pin shaft 21 to form a double-row roller chain;
one end of the chain is connected with the bottom surface of the frame 4 by a pin shaft, the other end of the chain is connected with the piston rod end of the tensioning oil cylinder 18 by a pin shaft after winding the driving roller 1 and the driven roller 3, and the tail end of the tensioning oil cylinder 18 is connected with the frame 4 by a pin shaft.
As shown in fig. 7: the frame 4 consists of a bottom frame 24, a left side plate 22, a right side plate 25, a front guide plate 23 and a rear guide plate 26;
the bottom frame 24 and the left side plate 22 are welded into a whole, the bottom surface of the right side plate 25 is connected with the bottom frame 24 through bolts, the front guide plate 23 and the rear guide plate 26 are connected with the left side plate 22 and the right side plate 25 through bolts, and a group of guide rollers are respectively arranged on the front guide plate 23 and the rear guide plate 26.
When the invention is in use, a steel wire rope 7 penetrates through the middle of the guide roller of the guide plate at one end of the frame 4, and after being integrally wound for a plurality of circles around the outer sides of the driving roller 1 and the driven roller 3, the steel wire rope penetrates out of the middle of the guide roller of the guide plate at the other end of the frame 4.
The steel wire rope 7 is wound on the two rollers and is matched with the grooves of the friction lining blocks 10 on the rollers;
the steel wire rope braking mechanism 2 is surrounded on the two rollers, the rope pressing roller 19 is pressed on the steel wire rope 7, and the groove of the roller is matched with the steel wire rope 7; when the rope is changed, firstly, the tensioning oil cylinder 18 of the steel wire rope braking mechanism 2 is contracted and tensioned, and the compressed steel wire rope 7 is attached to the friction lining block 10 on the roller; then the rolling brake mechanism 2 is released, the driving motor 8 of the driving roller 1 rotates, the driven roller 3 synchronously runs through the gear transmission of the transmission mechanism 5, and the steel wire rope 7 rotates along with the roller in a load range to be wound and unwound.
When the driving motor 8 stops running but the driving roller 1 does not stop or emergency braking is needed to be carried out on the rotating roller, the roller braking mechanism 6 can be closed to prevent the roller from stalling;
when the drum stops running, but the steel wire rope 7 slides on the drum, or the steel wire rope 7 is loosened and cannot be attached to the drum, the steel wire rope braking mechanism 2 can be repeatedly tensioned, the pressing force between the steel wire rope 7 and the drum is increased, and accidents such as rope sliding and the like are prevented.
Compared with the existing general equipment: the invention can realize that the rope inlet and outlet positions of the steel wire rope 7 wound on the two rollers are kept unchanged during operation, and the steel wire rope 7 is not accumulated on the device, so that the length of the rope which is taken in and out by the device is not limited;
after the steel wire rope 7 is wound on the two rollers for multiple circles, enough friction force is generated between the steel wire rope 7 and the friction lining cushion block 10 on the rollers, so that proper rope retracting tension is generated in the rope replacing work;
the steel wire rope braking mechanism 2 and the roller braking mechanism 6 can prevent the steel wire rope 7 from slipping on the roller and the device from stalling when the rope is changed;
meanwhile, the rope replacing device has a compact structure and comprehensive performance, can be well adapted to the limited space of a mine rope replacing site, ensures the safety of rope replacement and improves the efficiency of rope replacement.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a parallel drum-type friction trades rope winch which characterized in that, it includes: a driving roller (1), a steel wire rope braking mechanism (2), a driven roller (3), a transmission mechanism (5) and a roller braking mechanism (6) which are arranged on a rack (4);
the driving roller (1) and the driven roller (3) are arranged in parallel, the driven roller (3) is linked by a transmission mechanism (5), and a roller braking mechanism (6) is positioned on one side of the rack (4) and on the outer edge of one end of the driving roller (1);
the steel wire rope braking mechanism (2) surrounds the driving roller (1) and the driven roller (3) from the outer side, and two ends of the steel wire rope braking mechanism are connected with the bottom of the rack (4);
the steel wire rope (7) penetrates through the middle of a guide roller of a guide plate at one end of the rack (4), integrally winds the outer sides of the driving roller (1) and the driven roller (3) for a plurality of circles, and then penetrates out of the middle of a guide roller of a guide plate at the other end of the rack (4);
the driving roller (1) consists of a driving motor (8), a driving cylinder body (9), a friction lining cushion block (10), a driving gear ring (11) and a half shaft (12);
the driving roller (1) is cylindrical, and the outer layer of the driving roller is spliced and coated by the friction lining block (10); the driving motor (8) is arranged in the driving cylinder (9), the rotating part of the driving motor (8) is fixedly connected with the driving cylinder (9), and the fixed part of the driving motor (8) protrudes out of one side of the driving cylinder (9) and is fixedly connected with the rack (4);
the other side of the driving cylinder (9) is fixedly connected with one end of a half shaft (12), and the other end of the half shaft (12) protrudes out of the driving cylinder (9) and is connected with the rack (4) in a rotary support manner;
the driving gear ring (11) is a circular ring-shaped outer gear ring and is fixedly connected with one end of the driving cylinder body (9);
the driven roller (3) comprises a driven cylinder body (13), a friction lining block (10), a driven gear ring (14) and a long shaft (15);
the driven roller (3) is in a cylindrical shape, and the outer layer of the driven roller is spliced and coated by the friction lining cushion block (10); the friction lining cushion block (10) is a powder die-cast wear-resistant material rectangular block, a semicircular groove is formed in one side of the friction lining cushion block, and a plurality of circles of annular semicircular grooves are formed in the outer layer of the driven roller (3) after splicing;
the long shaft (15) is fixedly connected with the driven cylinder (13), and two ends of the long shaft protrude out of two sides of the driven cylinder (13) and are connected with the rack (4) in a rotary support manner;
the driven gear ring (14) is a circular outer gear ring and is fixedly connected with one end of the driven cylinder body (13);
the steel wire rope braking mechanism (2) comprises a tensioning oil cylinder (18), a rope pressing roller (19), a pin shaft (21) and a chain plate (20);
the rope pressing roller (19) is connected with the chain plate (20) in a penetrating way through a pin shaft (21) to form a double-row roller chain;
one end of the chain is connected with the bottom surface of the rack (4) through a pin shaft, the other end of the chain is connected with the piston rod end of the tensioning oil cylinder (18) through a pin shaft after winding the driving roller (1) and the driven roller (3), and the tail end of the tensioning oil cylinder (18) is connected with the rack (4) through a pin shaft.
2. The parallel drum-type friction rope-changing winch according to claim 1, wherein the friction lining pad block (10) is a rectangular block of powder die-cast wear-resistant material, a semicircular groove is formed on one side, and a plurality of circles of annular semicircular grooves are formed on the outer layer of the driving drum (1) after splicing.
3. The parallel drum-type friction rope-changing winch of claim 1,
the transmission mechanism (5) consists of a transmission shaft (16) and a transmission gear (17); the transmission shaft (16) is fixedly connected with the transmission gear (17), two ends of the transmission shaft are connected with the rotary support of the rack (4), and the transmission gear (17) is matched with the driving gear ring (11) and the driven gear ring (14).
4. The parallel drum-type friction rope-changing winch of claim 1,
the drum braking mechanism (6) adopts a disc brake, the base of the disc brake is fixedly connected with the rack (4), and the brake disc brakes and drives the outer edge of one end of the drum (1).
5. The parallel drum-type friction rope-changing winch according to claim 1, characterized in that the frame (4) is composed of a bottom frame (24), a left side plate (22), a right side plate (25), a front guide plate (23) and a rear guide plate (26);
the bottom frame (24) and the left side plate (22) are welded into a whole, the bottom surface of the right side plate (25) is connected with the bottom frame (24) through bolts, the front guide plate (23) and the rear guide plate (26) are connected with the left side plate (22) and the right side plate (25) through bolts, and a group of guide rollers are respectively arranged on the front guide plate (23) and the rear guide plate (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710076301.6A CN106744426B (en) | 2017-02-13 | 2017-02-13 | Parallel drum type friction rope-changing winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710076301.6A CN106744426B (en) | 2017-02-13 | 2017-02-13 | Parallel drum type friction rope-changing winch |
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| Publication Number | Publication Date |
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| CN106744426A CN106744426A (en) | 2017-05-31 |
| CN106744426B true CN106744426B (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710076301.6A Active CN106744426B (en) | 2017-02-13 | 2017-02-13 | Parallel drum type friction rope-changing winch |
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| CN (1) | CN106744426B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107588969A (en) * | 2017-09-23 | 2018-01-16 | 吉林大学 | Six pot of one drum-type entirety six degree of freedom exciting trolley coach bogie test platform |
| CN108298448B (en) * | 2017-12-29 | 2019-08-23 | 中国船舶重工集团公司第七一0研究所 | A kind of underwater optoelectronic composite cable winch using flexible reel |
| CN110294388B (en) * | 2018-03-23 | 2022-02-18 | 上海三菱电梯有限公司 | Rope unwinding auxiliary device and hoisting rope mounting or replacing system |
| US20230135307A1 (en) * | 2021-10-29 | 2023-05-04 | Hall Labs Llc | Winch |
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| JPH09315780A (en) * | 1996-05-23 | 1997-12-09 | Kayaba Ind Co Ltd | Towing winch |
| JP2001048083A (en) * | 1999-08-03 | 2001-02-20 | Kayaba Ind Co Ltd | Mooring device |
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| GB1002015A (en) * | 1963-02-28 | 1965-08-18 | Ichinosuke Naito | Rope drawing apparatus |
| AT12020U1 (en) * | 2009-03-10 | 2011-09-15 | Eccon Eng Computer Consult | SEILWINDE |
| JP5527695B2 (en) * | 2010-08-27 | 2014-06-18 | 東田商工株式会社 | Endless winch and initial rope guiding system to the winch |
| CN201999671U (en) * | 2011-04-12 | 2011-10-05 | 武汉船用机械有限责任公司 | Cable-type pulley lifting system for friction winch |
| CN202400763U (en) * | 2011-12-18 | 2012-08-29 | 徐州矿山设备制造有限公司 | Hydraulic traction winch |
| CN202558519U (en) * | 2012-05-25 | 2012-11-28 | 哈尔滨第一机械集团有限公司 | Compact servo hydraulic transmission winch |
| CN103613023B (en) * | 2013-12-16 | 2015-10-28 | 江苏科技大学 | Based on the friction drive winch of special hawser |
| CN104310242B (en) * | 2014-11-07 | 2016-09-07 | 国家电网公司 | Three line group tower crane |
| CN204873698U (en) * | 2015-08-05 | 2015-12-16 | 南通力威机械有限公司 | Lifting drum arresting gear |
| CN206569948U (en) * | 2017-02-13 | 2017-10-20 | 徐州市正联机电设备有限公司 | Rope winch is changed in the friction of parallel roller formula |
| GB201800726D0 (en) * | 2018-01-17 | 2018-02-28 | Maritime Developments Ltd | Rope Maintenance system |
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- 2017-02-13 CN CN201710076301.6A patent/CN106744426B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09315780A (en) * | 1996-05-23 | 1997-12-09 | Kayaba Ind Co Ltd | Towing winch |
| JP2001048083A (en) * | 1999-08-03 | 2001-02-20 | Kayaba Ind Co Ltd | Mooring device |
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| CN106744426A (en) | 2017-05-31 |
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