CN106865436B - Rope threading hoisting mechanism for crane - Google Patents
Rope threading hoisting mechanism for crane Download PDFInfo
- Publication number
- CN106865436B CN106865436B CN201710202370.7A CN201710202370A CN106865436B CN 106865436 B CN106865436 B CN 106865436B CN 201710202370 A CN201710202370 A CN 201710202370A CN 106865436 B CN106865436 B CN 106865436B
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- winding drum
- rope
- frame
- steel wire
- stage
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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 68
- 238000004804 winding Methods 0.000 claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B66D1/08—Driving gear incorporating fluid 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
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
- B66D1/22—Planetary or differential gearings, i.e. with planet gears having movable axes of rotation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention discloses a rope threading hoisting mechanism for a crane, which comprises the following components: the hydraulic motor, the frame, the winding drum, the brake, the differential planetary gear train, the steel wire rope and the rope pressing device; the hydraulic motor is in transmission connection with the winding drum through the differential planetary gear train; the outer wall of the winding drum is wound with a steel wire rope, and the frame is provided with a rope pressing device for limiting the steel wire rope. The rope threading winch mechanism for the crane adopts a drum design with integrated drums and inner gear rings, a structure with a built-in two-stage differential gear train is adopted, and the planet carrier adopts an integral plate type planet carrier, so that the axial dimension is small under the condition of the same transmission ratio, the structure is compact, and the overall dimension of the rope threading winch is greatly reduced.
Description
Technical Field
The invention relates to a rope threading hoisting mechanism applied to a large crane, which is used for threading and tensioning a hoisting steel wire rope on a boom.
Background
At present, most cranes also adopt manual traction or auxiliary equipment to wear and cause hoisting steel wire ropes, and consume manpower and material resources in the operation of installing and replacing the hoisting steel wire ropes, so that the operation efficiency of hoisting preparation is low; although hoisting mechanisms are adopted to penetrate and tension hoisting steel wire ropes on few cranes, most of the hoisting mechanisms are large in volume and heavy in weight, and the requirements of the whole crane on weight control and convenience in installation and debugging cannot be met.
Disclosure of Invention
According to the technical problem, the rope threading hoisting mechanism for the crane is provided, and is used for solving the defects that the existing crane consumes manpower and material resources and has low hoisting preparation operation efficiency in the installation and replacement of the hoisting steel wire rope. The invention adopts the following technical means:
a rope hoist mechanism for a crane, comprising: the hydraulic motor, the frame, the winding drum, the brake, the differential planetary gear train, the steel wire rope and the rope pressing device; the hydraulic motor is in transmission connection with the winding drum through the differential planetary gear train; the outer wall of the winding drum is wound with a steel wire rope, and the frame is provided with a rope pressing device for limiting the steel wire rope.
Preferably, the differential planetary gear train includes: the device comprises a first-stage sun gear, a first-stage planet carrier, a second-stage sun gear, a second-stage planet gear and a second-stage planet carrier; the output shaft of the hydraulic motor is provided with a spline housing, the internal teeth of the spline housing are meshed with a first-stage sun gear of the differential planetary gear train, and at least three first-stage planetary gears are meshed with the first-stage sun gear; the secondary sun gear is meshed with at least three secondary planet gears, and the primary planet gears and the secondary planet gears are simultaneously meshed with the inner teeth of the winding drum for transmission.
The first-stage planetary gear is arranged on a first-stage planetary gear carrier, the first-stage planetary gear carrier is meshed with a second-stage sun gear through a spline for transmission, the second-stage planetary gear is arranged on a second-stage planetary gear carrier, the second-stage planetary gear carrier is fixed on a frame, and a bearing is arranged between the outer wall of the second-stage planetary gear carrier and the inner wall of a winding drum; the inner frame body of the winding drum is provided with a trunnion, and a bearing is arranged between the outer wall of the trunnion and the frame.
Preferably, the rope pressing device comprises a tension spring, a compression bar, a connecting rod, an external pressing block, an internal pressing block, a long roller and a short roller; the rope pressing device is provided with two parallel pressing rods, the root parts of the two pressing rods are respectively connected with the rack in a rotating way through pin shafts, the middle parts of the two pressing rods are fixedly connected through middle rods, the front end of each pressing rod is fixedly provided with an external pressing block and an internal pressing block through bolts, the outer sides of the internal pressing blocks at the front ends of the two pressing rods are provided with long rollers for pressing ropes, and the external pressing blocks at the front ends of the two pressing rods are respectively sleeved with a short roller; one end of the tension spring is fixed at the front end of the compression bar, and the other end of the tension spring is fixed on the frame, so that the front end of the compression bar is pulled to the steel wire rope.
Preferably, the brake is a wet-type multi-disc brake.
Preferably, the frame is fixed on the crane through pin shaft connection.
Preferably, the brake comprises a piston, a spring and a friction plate; the spring is arranged in the piston, the friction plate is arranged at the bottom of the piston, and the friction plate comprises an inner friction plate and an outer friction plate; the inner friction plate is meshed with the external teeth of the spline housing, and the outer friction plate is meshed with the internal teeth of the secondary planet carrier.
As preferable, 3-7 primary planet gears and 7 secondary planet gears are respectively uniformly distributed in the circumferential direction of the primary sun gear.
Compared with the prior art, the rope threading hoisting mechanism for the crane has the following advantages:
1. according to the rope threading hoisting mechanism for the crane, the differential planetary gear train and the brake are arranged in the winding drum, the primary planetary gear and the secondary planetary gear of the differential planetary gear train are simultaneously meshed with the internal teeth of the winding drum for transmission, the winding drum and the annular gear are integrated, the structure of the secondary differential gear train is built in, the whole plate type planetary frame is adopted as the planetary frame, the axial size is small under the condition of the same transmission ratio, the structure is compact, and therefore the overall size of the rope threading hoisting is greatly reduced.
2. According to the rope threading hoisting mechanism for the crane, the internal teeth of the spline housing are meshed with the primary sun gear of the differential planetary gear train, and at least three primary planet gears are meshed with the primary sun gear; the secondary sun gear is meshed with at least three secondary planet gears, the primary planet gears and the secondary planet gears are simultaneously meshed with the inner teeth of the winding drum for transmission, the differential gear train is adopted for transmission, the winding drum gathers the output power of each stage for integral output, the power is not split, and the working efficiency is high.
3. The rope threading hoisting mechanism for the crane has the advantages that the frame is fixedly connected to the crane through the pin shaft, the size is small, the weight is light, and the rope threading hoisting mechanism is easy to install on a vehicle.
4. According to the rope threading hoisting mechanism for the crane, the spline sleeve is arranged on the output shaft of the hydraulic motor, the brake is a wet-type multi-disc brake, the hydraulic motor is adopted for input, and the rope winding and unwinding process of the rope threading hoisting mechanism is conveniently and accurately executed through the wet-type multi-disc brake structure, so that the operation and control are facilitated.
5. The rope threading hoisting mechanism for the crane is characterized in that the frame is provided with the rope pressing device structure for limiting the steel wire rope, so that rope disorder in the rope winding and unwinding process of the mechanism is avoided.
The rope threading hoisting mechanism for the crane provided by the invention realizes automation of the rope threading process of the crane, avoids manual rope threading and pulling, improves the hoisting operation efficiency, is multipurpose, is not only suitable for threading work when the steel wire rope is replaced, but also is used for tensioning the hoisting steel wire rope in the amplitude changing process of the boom, and avoids rope disorder of the hoisting mechanism.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a schematic view in the a direction of fig. 1.
Fig. 3 is a cross-sectional view of the present invention.
Fig. 4 is a schematic structural view of the rope pressing device of the present invention.
Wherein: 1. the hydraulic motor, 2, the frame, 3, the reel, 4, the brake, 5, the differential planetary gear train, 6, the wire rope, 7, the rope pressing device, 8, the tension spring, 9, the spline housing, 10, the primary sun gear, 11, the primary planet gear, 12, the primary planet carrier, 13, the trunnion, 14, the secondary sun gear, 15, the secondary planet gear, 16, the secondary planet carrier, 17, the pin roll, 18, the compression bar, 19, the connecting rod, 20, the external pressing block, 21, the internal pressing block, 22, the long roller, 23 and the short roller.
Detailed Description
As shown in fig. 1 to 4, a rope threading hoisting mechanism for a crane includes: the hydraulic motor 1, the frame 2, the winding drum 3, the brake 4, the differential planetary gear system 5, the steel wire rope 6 and the rope pressing device 7; the frame 2 is provided with four pin shaft holes which are engaged with side wall plates at appointed positions of the crane, so that the frame 2 is fixedly connected to the crane through pin shafts. The lower half of the frame 2 has a bent plate for increasing the overall strength and rigidity.
The winding drum 3 is arranged in the frame 2 and is connected in a rotating way, a differential planetary gear train 5 and a brake 4 are arranged in the winding drum 3, and the hydraulic motor 1 is connected with the winding drum 3 in a transmission way through the differential planetary gear train 5; the brake 4 is a wet multi-plate brake for controlling the start and stop of the rotation of the spool 3.
As shown in fig. 3, the differential planetary gear system 5 is a two-stage closed differential planetary gear system for reducing speed and increasing torque, and the differential planetary gear system 5 includes: a primary sun gear 10, a primary planet gear 11, a primary planet carrier 12, a secondary sun gear 14, a secondary planet gear 15 and a secondary planet carrier 16; the output shaft of the hydraulic motor 1 is provided with a spline housing 9, the internal teeth of the spline housing 9 are meshed with a primary sun gear 10 of the differential planetary gear train 5, and at least three primary planet gears 11 are meshed with the primary sun gear 10; the secondary sun gear 14 is meshed with at least three secondary planet gears 15, and the primary planet gears 11 and the secondary planet gears 15 are simultaneously meshed with the inner teeth of the winding drum 3 for transmission.
The hydraulic motor 1 is connected with a primary sun gear 10 through a spline housing 9 to input power, and is meshed with a primary planet gear 11 to be output by a primary planet carrier 12 and a winding drum 3; the primary planet carrier 12 is transferred to the secondary sun gear 14 and is output from the spool 3 by meshing with the secondary planet gears 15. The secondary planet carrier 16 is fixed and combined on the frame 2, so that the winding drum 3 gathers the output of each stage and integrally outputs power.
The primary planet wheel 11 is arranged on the primary planet carrier 12, the primary planet carrier 12 is meshed with the secondary sun wheel 14 through a spline for transmission, the secondary planet wheel 15 is arranged on the secondary planet carrier 16, the secondary planet carrier 16 is fixed on the frame 2, and a bearing is arranged between the outer wall of the secondary planet carrier 16 and the inner wall of the winding drum 3; the inside support body of reel 3 is last to be provided with trunnion 13, be provided with the bearing between trunnion 13 outer wall and frame 2, reel 3 is arranged in frame 2, and both ends are fixed through second grade planet carrier 15 and trunnion 13 respectively, guarantee to operate steadily.
The number of the first-stage planetary gears 11 and the second-stage planetary gears 15 is 3-7 uniformly distributed in the circumferential direction, and the number of the planetary gears is preferably 3, 4 or 5 on the premise of meeting the strength.
The brake 4 comprises a piston, a spring and a friction plate; the spring is arranged in the piston, the friction plate is arranged at the bottom of the piston, and the friction plate comprises an inner friction plate and an outer friction plate; the inner friction plate is meshed with the external teeth of the spline housing 9, and the outer friction plate is meshed with the internal teeth of the secondary planet carrier 16.
The outer wall of the winding drum 3 is wound with a steel wire rope 6, and the frame 2 is provided with a rope pressing device 7 for limiting the steel wire rope 6. As shown in fig. 4, the rope pressing device 7 comprises a tension spring 8, a compression bar 18, a connecting rod 19, an outer pressing block 20, an inner pressing block 21, a long roller 22 and a short roller 23; the rope pressing device 7 is provided with two parallel pressing rods 18, and the root parts of the two pressing rods 18 are respectively connected with the frame 2 in a rotating way through pin shafts 17.
The middle parts of the two pressing rods 18 are fixedly connected through a middle rod 19, the front end of each pressing rod 18 is fixedly provided with an outer pressing block 20 and an inner pressing block 21 through bolts, the outer sides of the inner pressing blocks 21 at the front ends of the two pressing rods 18 are provided with long rollers 22 for pressing ropes, and the outer pressing blocks 20 at the front ends of the two pressing rods 18 are respectively sleeved with a short roller 23; the rope presser 7 is supported by two pressing rods 18 and one intermediate rod 19, and an outer pressing block 20 and an inner pressing block 21 are connected by bolts, and a long roller 22 and two short rollers 23 are fixed on the pressing rods 18.
One end of the tension spring 8 is fixed at the front end of the compression bar 18, and the other end is fixed on the frame 2, so that the front end of the compression bar 18 is pulled towards the steel wire rope 6, and the rope pressing device 7 is tightly pressed on the steel wire rope 6, as shown in fig. 2.
The rope pressing device 7 is arranged on the other side of the rope outlet direction of the winding drum 3, namely on the opposite side of the rope outlet direction, and the long roller 22 and the short roller 23 respectively take the outer pressing block 20 and the inner pressing block 21 as fixed shafts due to the tensioning action of the tension spring 8 on the compression bar 18, and rotate relative to the steel wire rope to generate rolling friction so as to avoid rope disorder.
The compression bar 18 is designed for a fold line, and the angle is related to the acting force positions of the tension spring 8 and the steel wire rope 6 and the fixed position of the compression bar 18.
During working, the step of paying out the steel wire rope 6: the hydraulic oil of the brake 4 is turned on, and when the pressure reaches a set value, the brake 4 releases the brake.
When the hydraulic motor 1 rotates in the forward direction, power is input through the primary sun gear 10, and power is output through the primary planet carrier 12 and the winding drum 3 by being meshed with the primary planet gears 11; the primary planet carrier 12 transmits power to the secondary sun gear 14, and the power is output by the winding drum 3 through meshing with the secondary planet gears 15.
The secondary planet carrier 16 is fixed on the frame 2, so that the winding drum 3 outputs power, the winding drum 3 rotates reversely, and the steel wire rope 6 is paid out.
When the wire rope 6 is paid out to a desired length, the brake 4 brakes, and the drum 3 stops rotating.
And (6) retracting the steel wire rope: the hydraulic motor 2 rotates reversely, power is input through the primary sun gear 10, and power is output by the primary planet carrier 12 and the winding drum 3 through meshing with the primary planet gears 11; the primary planet carrier 12 transmits power to the secondary sun gear 14, and the power is output by the winding drum 3 through meshing with the secondary planet gears 15.
The secondary planet carrier 16 is fixed on the frame 2, so that the power is finally output by the winding drum 3, the winding drum 3 rotates positively, and the steel wire rope 6 is recovered.
The brake 4 brakes, and the spool 3 stops rotating.
In the process of winding and unwinding the rope by the winding drum 3, the rope pressing device 7 always presses the steel wire rope 6.
The weight requirement of the whole crane is very high, so that the weight requirement of the rope threading winch mechanism is very strict. The rope threading winch mechanism has the advantages of compact structure, light weight, small occupied space, flexible installation and the like, adopts a connection mode of hinging a machine base, not only realizes that a hoisting steel wire rope can be automatically threaded on an arm support, but also avoids the phenomenon of rope disorder of the hoisting steel wire rope, is a novel rope threading winch mechanism which is safe, reliable, small in size and light in weight, is convenient for random installation, and greatly improves the efficiency of hoist hoisting preparation operation of a crane.
The invention relates to a rope threading hoisting mechanism for a crane, which is a device for threading or tensioning a hoisting steel wire rope for the crane. The hoisting steel wire rope can replace manual threading and replacement, the requirement of the whole crane for light weight can be met, and the rope disorder problem caused by rope winding and unwinding can be avoided. Because the occupied space is small, the installation and the debugging are convenient, the efficiency of the hoist preparation work of the crane is improved, and the expenses in the manual work and the installation and maintenance process are reduced.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
1. A rope threading hoisting mechanism for a crane, characterized by comprising: the hydraulic motor, the frame, the winding drum, the brake, the differential planetary gear train, the steel wire rope and the rope pressing device;
the hydraulic motor is in transmission connection with the winding drum through the differential planetary gear train;
the outer wall of the winding drum is wound with a steel wire rope, and the frame is provided with a rope pressing device for limiting the steel wire rope;
the differential planetary gear train comprises: the device comprises a first-stage sun gear, a first-stage planet carrier, a second-stage sun gear, a second-stage planet gear and a second-stage planet carrier;
the output shaft of the hydraulic motor is provided with a spline housing, the internal teeth of the spline housing are meshed with a first-stage sun gear of the differential planetary gear train, and at least three first-stage planetary gears are meshed with the first-stage sun gear;
the secondary sun gear is meshed with at least three secondary planet gears, and the primary planet gears and the secondary planet gears are simultaneously meshed with the inner teeth of the winding drum for transmission;
the first-stage planetary gear is arranged on a first-stage planetary gear frame, the first-stage planetary gear frame is in meshed transmission with a second-stage sun gear through a spline, the second-stage planetary gear is arranged on a second-stage planetary gear frame, the second-stage planetary gear frame is fixed on a frame, and a bearing is arranged between the outer wall of the second-stage planetary gear frame and the inner wall of a winding drum;
a trunnion is arranged on the frame body in the winding drum, and a bearing is arranged between the outer wall of the trunnion and the frame;
when in work, the step of paying out the steel wire rope comprises the following steps: the hydraulic oil of the brake is connected, and when the pressure reaches a set value, the brake releases the brake;
when the hydraulic motor rotates in the forward direction, power is input through the primary sun gear, and power is output through the primary planet carrier and the winding drum through meshing with the primary planet gear; the primary planet carrier transmits the power to the secondary sun gear, and the power is output by the winding drum through meshing with the secondary planet gear;
the secondary planet carrier is fixed on the frame, so that the winding drum outputs power, the winding drum reversely rotates, and the steel wire rope is paid out;
when the steel wire rope is released to the required length, the brake brakes, and the winding drum stops rotating;
and (3) a step of retracting the steel wire rope: the hydraulic motor reversely rotates, power is input through a primary sun gear, and power is output by a primary planet carrier and a winding drum through meshing with a primary planet gear; the primary planet carrier transmits the power to the secondary sun gear, and the power is output by the winding drum through meshing with the secondary planet gear;
because the second-stage planetary frame is fixed on the frame, the power is finally output by the winding drum, the winding drum rotates positively, and the steel wire rope is retracted;
the brake brakes, and the winding drum stops rotating;
in the process of winding and unwinding the rope by the winding drum, the rope pressing device always presses the steel wire rope;
the rope pressing device comprises a tension spring, a compression bar, a connecting rod, an external pressing block, an internal pressing block, a long roller and a short roller;
the rope pressing device is provided with two parallel pressing rods, the root parts of the two pressing rods are respectively connected with the rack in a rotating way through pin shafts, the middle parts of the two pressing rods are fixedly connected through middle rods, the front end of each pressing rod is fixedly provided with an external pressing block and an internal pressing block through bolts, the outer sides of the internal pressing blocks at the front ends of the two pressing rods are provided with long rollers for pressing ropes, and the external pressing at the front ends of the two pressing rods are respectively sleeved with a short roller;
one end of the tension spring is fixed at the front end of the compression bar, and the other end of the tension spring is fixed on the frame, so that the front end of the compression bar is pulled to the steel wire rope;
the brake is a wet-type multi-disc brake;
the frame is connected and fixed on the crane through a pin shaft;
the brake comprises a piston, a spring and a friction plate;
the spring is arranged in the piston, the friction plate is arranged at the bottom of the piston, and the friction plate comprises an inner friction plate and an outer friction plate;
the inner friction plate is meshed with the external teeth of the spline housing, and the outer friction plate is meshed with the internal teeth of the secondary planet carrier;
the primary planet gears and the secondary planet gears are respectively and uniformly distributed with 3-7 in the circumferential direction of the primary sun gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202370.7A CN106865436B (en) | 2017-03-30 | 2017-03-30 | Rope threading hoisting mechanism for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202370.7A CN106865436B (en) | 2017-03-30 | 2017-03-30 | Rope threading hoisting mechanism for crane |
Publications (2)
| Publication Number | Publication Date |
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| CN106865436A CN106865436A (en) | 2017-06-20 |
| CN106865436B true CN106865436B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710202370.7A Active CN106865436B (en) | 2017-03-30 | 2017-03-30 | Rope threading hoisting mechanism for crane |
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| CN (1) | CN106865436B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108046147A (en) * | 2017-12-28 | 2018-05-18 | 南京高速齿轮制造有限公司 | With the integrated crane reduction box of reel |
| CN109502498A (en) * | 2019-01-17 | 2019-03-22 | 浙江三装备有限公司 | Rope processing device, hoist engine and crane |
| CN111924735A (en) * | 2020-08-29 | 2020-11-13 | 大连华锐重工集团股份有限公司 | Clutch type rope-threading hoisting mechanism for crane |
| CN112960579B (en) * | 2021-02-07 | 2022-11-29 | 西北机器有限公司 | Aircraft hangs and plays and uses lifting machine |
| CN115385258B (en) * | 2022-10-31 | 2023-01-24 | 河南三智装备科技有限公司 | Portable electric hoist rope guider |
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| US4328954A (en) * | 1979-05-07 | 1982-05-11 | Pettibone Corporation | Winch with compact, high efficiency and high ratio gearing suitable for free fall |
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| CN206606957U (en) * | 2017-03-30 | 2017-11-03 | 大连华锐重工集团股份有限公司 | Crane wire rope handling hoisting mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4328954A (en) * | 1979-05-07 | 1982-05-11 | Pettibone Corporation | Winch with compact, high efficiency and high ratio gearing suitable for free fall |
| CN1241529A (en) * | 1998-06-26 | 2000-01-19 | 株式会社神户制钢所 | Hydraulic capstan |
| CN102205933A (en) * | 2011-03-25 | 2011-10-05 | 胡世璇 | Hydraulic winch with built-in variable axial piston hydraulic motor |
| CN103641011A (en) * | 2013-12-24 | 2014-03-19 | 大连华锐重工集团股份有限公司 | High-performance hook free falling hoisting mechanism |
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| CN206606957U (en) * | 2017-03-30 | 2017-11-03 | 大连华锐重工集团股份有限公司 | Crane wire rope handling hoisting mechanism |
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|---|---|
| CN106865436A (en) | 2017-06-20 |
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