CN217102643U - Permanent magnet hoisting equipment with magnetic field automatic locking function - Google Patents
Permanent magnet hoisting equipment with magnetic field automatic locking function Download PDFInfo
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- CN217102643U CN217102643U CN202220968803.6U CN202220968803U CN217102643U CN 217102643 U CN217102643 U CN 217102643U CN 202220968803 U CN202220968803 U CN 202220968803U CN 217102643 U CN217102643 U CN 217102643U
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Abstract
The utility model belongs to the technical field of the lifting device technique and specifically relates to a permanent magnetism lifts by crane equipment with automatic locking function in magnetic field. The utility model discloses a permanent magnetism lifting device with magnetic field automatic locking function's hanging beam is connected through force transducer between the chain sling, force transducer provides different signals for the magnetic field control assembly automatically when load liftoff and load fall to the ground, and the magnetic field control assembly locks and removes the locking operation to the magnetic field according to the signal, promotes the operation safety; the inner length of the waist-shaped lifting hole is larger than the inner diameter of the mounting hole, so that the sensitivity of the tension sensor is ensured, the falling-off between the lifting beam and the lifting chain caused by the fracture of the tension sensor is prevented, and the safety performance is improved; the upper surface of the hanging beam is provided with the power supply unit, and the power supply unit supplies power to ensure that the operation place of the equipment is wider and the applicability is stronger; the angle sensor can accurately control the rotation angle of the magnetic shaft, so that the external magnetic force is controlled, and the applicability of the angle sensor is better compared with that of a traditional limit proximity switch.
Description
Technical Field
The utility model belongs to the technical field of the lifting device technique and specifically relates to a permanent magnetism lifts by crane equipment with automatic locking function in magnetic field.
Background
In the industries of ship manufacturing, steel plate production or other large-scale machinery manufacturing and the like, hoisting electromagnets or hoisting permanent magnets are generally used for hoisting or transporting steel raw materials. The lifting electromagnet absorbs materials by utilizing the magnetic force generated by the internal iron core under the action of the electrified coil, so that the power consumption is high. The lifting permanent magnet is divided into manual and electric lifting permanent magnets, and the manual lifting permanent magnet needs a manual operation handle to control a magnetic circuit, so that the use is inconvenient; the electric hoisting permanent magnet is mainly characterized in that a driving device is arranged above the permanent magnet, and the driving device controls the rotation of the magnetic circuit, so that the unloading and the material sucking work are completed.
In the specific embodiment of the invention patent electric control lifting permanent magnet (application number: CN201310317467.4), a button start switch or a start switch on a remote controller is pressed, a speed reducing motor is electrified, the speed reducing motor rotates to drive a magnetic shaft to rotate, when the magnetic shaft rotates to a magnetic pole open circuit (namely an induction sheet rotates to a high-order magnetic force limit proximity switch), the motor automatically stops rotating, at the moment, the electric control lifting permanent magnet externally displays magnetism to realize material absorption, a demagnetization button or a demagnetization remote control switch is pressed, and the speed reducing motor rotates reversely to drive the magnetic shaft to rotate towards a demagnetization direction; when the lowest magnetic force position is rotated, the induction sheet can touch the low magnetic force position limit proximity switch, the power supply is cut off, the speed reduction motor automatically stops rotating, and the electric control hoisting permanent magnet does not display magnetic force outwards at the moment, so that unloading is realized.
Through button or remote switch control motor, and then control magnetic shaft rotates, and this structure leans on the relation between response piece and the spacing proximity switch to control the magnetic circuit, therefore unable nimble magnetic force size of adjusting, lifts by crane the in-process inhaling the material, if the demagnetization switch is pressed to the people maloperation appearing for the motor reversal leads to the magnetic field to close, and by the absorbent material high altitude drop, will cause serious incident, the security performance is not high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the background technology, the permanent magnet hoisting equipment with the magnetic field automatic locking function is provided, the problem that a motor is controlled through a button or a remote control switch, and then a magnetic shaft is controlled to rotate is solved, the structure controls a magnetic circuit by depending on the relation between an induction sheet and a limit proximity switch, so that the magnetic force cannot be flexibly adjusted, and in the process of material suction hoisting, if a demagnetization switch is pressed by manual misoperation, the motor is reversed to cause the magnetic field to be closed, the adsorbed material falls in high altitude, serious safety accidents can be caused, and the safety performance is not high is solved.
The utility model provides a technical scheme that its technical problem adopted is: the permanent magnet hoisting equipment with the magnetic field automatic locking function comprises a hoisting beam, a hoisting chain and a hoisting permanent magnet, wherein tension sensors are arranged at the left end and the right end of the hoisting beam, the hoisting beam and the hoisting chain are connected through the tension sensors, signal output ports are arranged on the tension sensors, a magnetic field control assembly is fixedly arranged inside the hoisting permanent magnet, and the tension sensors are connected with the magnetic field control assembly through the signal output ports through cables.
The lifting device is characterized in that fixing supports are welded at the left end and the right end of the upper surface of the lifting beam, mounting holes are formed in the upper end and the lower end of the tension sensor, the tension sensor is connected with the fixing support through the mounting hole in the lower end of the tension sensor in a pin mode, and the lower end of the lifting chain is connected with the tension sensor through the mounting hole in the upper end of the tension sensor in a pin mode.
The fixing support comprises two fixing plates which are symmetrically arranged in the front-back direction, the bottom surfaces of the fixing plates are connected with the upper surface of the hanging beam in a welding mode, the tension sensor is located between the two fixing plates, through holes are formed in the front faces of the fixing plates, the tension sensor is connected with the fixing plates through mounting holes in the lower ends of the tension sensor, the left end and the right end of each fixing plate are symmetrically provided with the through holes, hinge pins are connected in the through holes in an inserting mode, and opening pins are arranged on outer openings of the hinge pins.
The two sides of the tension sensor are provided with protection plates, the lower end of each protection plate is coaxially provided with a fixing hole with the mounting hole at the lower end of the tension sensor, and the upper end of each protection plate is coaxially provided with a lifting hole with the mounting hole at the upper end of the tension sensor.
The lifting hole is a waist-shaped hole, and the inner length of the lifting hole is larger than the inner diameter of the mounting hole.
The magnetic field control subassembly include magnetic axle box, motor, switch and controller all fixed the upper surface that sets up in the magnetic axle box, be provided with the speed reducer in the pivot of motor, fixed mounting has angle sensor on the terminal surface of the output of speed reducer, the output shaft of speed reducer is provided with gear drive, the inside of magnetic axle box is provided with the magnetic axle, the one end of magnetic axle extends to the outside of magnetic axle box and is connected with gear drive, the magnetic axle pass through gear drive and speed reducer meshing transmission.
The upper surface of hanging beam is provided with the electrical unit, the electrical unit with switch cable junction, switch cable junction with motor and controller respectively.
The motor comprises a driving module and a braking module, a signal output port of the tension sensor is in cable connection with the controller, the controller is in cable connection with the driving module and the braking module of the motor respectively, and the angle sensor is in cable connection with the controller.
And signal indicating lamps matched with the lifting permanent magnets at the corresponding ends are arranged at two ends of the upper surface of the power supply unit and are connected with the controller cables at the corresponding ends.
The utility model has the advantages that:
(1) the utility model discloses a permanent magnetism lifting device with magnetic field automatic locking function comprises hanging beam, chain sling and jack-up permanent magnet, is connected through force transducer between hanging beam and the chain sling, force transducer provides different signals for magnetic field control assembly through signal output port automatically when load liftoff and load fall to the ground, magnetic field control assembly locks and removes the locking operation to the magnetic field according to the signal, avoid the maloperation to cause magnetic force to close, the load drops, promoted the operation safety of this equipment;
(2) the protective plates are arranged on the two sides of the tension sensor, the lifting holes in the protective plates are waist-shaped holes, the inner length of each lifting hole is larger than the inner diameter of each mounting hole, the structure ensures the sensitivity of the tension sensor, and meanwhile, the hanging beam can be prevented from falling due to the breakage of the tension sensor, and the safety performance is improved;
(3) the upper surface of the hanging beam is provided with the power supply unit, the power supply unit is connected with the power switch through cables, the power switch is respectively connected with the motor and the controller through cables, and power is supplied through the power supply unit, so that the working place of the equipment is wider, and the applicability is stronger;
(4) the angle sensor can accurately control the rotation angle of the magnetic shaft, so that the external magnetic force is controlled, and the applicability of the angle sensor is better compared with that of a traditional limit proximity switch.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an assembly schematic diagram of the hoist chain, the hoist beam and the tension sensor of the present invention.
Fig. 3 is a schematic structural view of the direction a-a in fig. 1 according to the present invention.
Fig. 4 is a schematic structural diagram of the middle magnetic field control assembly of the present invention.
Fig. 5 is a schematic diagram of the internal structure of the middle magnetic field control assembly of the present invention.
Fig. 6 is a schematic structural diagram of the middle tension sensor of the present invention.
Fig. 7 is a schematic view of the electrical control cable connection according to the present invention.
In the figure, 1, a hanging beam, 2, a hanging chain, 3, a lifting permanent magnet, 4, a tension sensor, 5, a signal output port, 6, a magnetic field control assembly, 7, a fixed support, 8, a mounting hole, 9, a fixed plate, 10, a protective plate, 11, a fixed hole, 12, a lifting hole, 13, a magnetic axle box, 14, a motor, 15, a power switch, 16, a controller, 17, a speed reducer, 18, an angle sensor, 19, a gear transmission mechanism, 20, a magnetic axle, 21, a power supply unit and 22, a signal indicator light are arranged.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7 show a permanent magnet hoisting device with a magnetic field automatic locking function, which comprises a hoisting beam 1, a hoisting chain 2 and a hoisting permanent magnet 3, wherein tension sensors 4 are arranged at the left and right ends of the hoisting beam 1, the hoisting beam 1 is connected with the hoisting chain 2 through the tension sensors 4, the tension sensors 4 are provided with signal output ports 5, a magnetic field control assembly 6 is fixedly arranged inside the hoisting permanent magnet 3, and the tension sensors 4 are in cable connection with the magnetic field control assembly 6 through the signal output ports 5.
As shown in fig. 1, the hanging beam 1 is connected with the hanging chain 2 through the tension sensor 4, the tension sensor 4 provides different signals to the magnetic field control assembly 6 through the signal output port 5 when a load is lifted off the ground and when the load is fallen to the ground, the magnetic field control assembly 6 locks and unlocks a magnetic field according to the signals, and the safety performance of the equipment is improved, wherein the tension sensor 4 is not limited to a tension sensor, and other sensors capable of detecting the weight of the load can be used.
Further, in order to facilitate installation of equipment and replacement of the later tension sensor 4, fixing supports 7 are welded at the left end and the right end of the upper surface of the hanging beam 2, mounting holes 8 are formed in the upper end and the lower end of the tension sensor 4, the tension sensor 4 is in pin connection with the fixing supports 7 through the mounting holes 8 in the lower end of the tension sensor 4, and the lower end of the hanging chain 2 is in pin connection with the tension sensor 4 through the mounting holes 8 in the upper end of the tension sensor 4.
Further, in order to protect the tension sensor 4, the fixing support 7 comprises two fixing plates 9 which are symmetrically arranged front and back, the bottom surfaces of the fixing plates 9 are connected with the upper surface of the hanging beam 1 in a welded mode, the tension sensor 4 is located between the two fixing plates 9, a through hole is formed in the front surface of each fixing plate 9, the tension sensor 4 is connected with the fixing plates 9 through mounting holes 8 in the lower ends of the tension sensor 4 in a pin shaft mode, the left end and the right end of each fixing plate 9 are symmetrically provided with the through holes, a pin shaft is connected in the through holes in a plug-in mode, and an opening pin is arranged on the outer opening of the pin shaft.
As shown in fig. 2, two pin shafts pass through the through holes at the left and right ends of the two fixing plates 9 respectively, then the cotter pin is inserted into the open hole at the tail end of the pin shaft, the tension sensor 4 is positioned between the two pin shafts and rotates in the space, the structure can play an effective limiting role, the tension sensor 4 is prevented from rotating at a large angle, the abrasion between the pin shafts at the joint of the inner ring surface of the mounting hole 8 and the fixing plates 9 is reduced, and meanwhile, the signal cable of the tension sensor 4 can be effectively protected by the limiting pin shaft close to the signal output port 5.
Furtherly, in order to prevent to drop because of force sensor 4 fracture when guaranteeing force sensor 4 sensibility between hanging beam 1 and the chain sling 2 in order to guarantee, lifting means's security performance, force sensor 4's both sides all are provided with protection shield 10, and the lower extreme of protection shield 10 has seted up fixed orifices 11 with the mounting hole 8 coaxial of force sensor 4 lower extreme, and the upper end of protection shield 10 has seted up lifting eye 12 with the mounting hole 8 coaxial of force sensor 4 upper end.
As shown in fig. 3, the tension sensor 4 and the protection plates 10 on both sides of the tension sensor 4 are placed between two fixing plates 9, the mounting hole 8 at the lower end of the tension sensor 4 and the fixing hole 11 at the lower end of the protection plate 10 are aligned with the through hole of the fixing plate 9 at the same time and are fixed by a pin, the outer opening of the pin is limited and fixed by a split pin, then a bolt passes through the lifting hole 12 at the upper end of the protection plate 10 and the mounting hole 8 at the upper end of the tension sensor 4 and is fastened by a nut, the tail end of the bolt, namely the outer opening of the nut, is also limited by the split pin which is used for limiting the nut, meanwhile, in order to reduce the axial sliding at the pin shaft connecting part of the upper end and the lower end of the tension sensor 4 and reduce the abrasion, annular partition plates are arranged at the openings of the fixing hole 11 and the lifting hole 12 of the protection plate 10.
Further, in order to ensure the sensitivity of the tension sensor 4, the lifting hole 12 is a kidney-shaped hole, and the inner length dimension of the lifting hole 12 is larger than the inner diameter of the mounting hole 8.
Further, in order to effectively control the magnetic field, particularly lock the magnetic field when the load is lifted off the ground, and improve the safety of the equipment, as shown in fig. 4, the magnetic field control assembly 6 includes a magnetic axle box 13, a motor 14, a power switch 15, and a controller 16, the motor 14, the power switch 15, and the controller 16 are all fixedly disposed on the upper surface of the magnetic axle box 13, a speed reducer 17 is disposed on a rotating shaft of the motor 14, an angle sensor 18 is fixedly mounted on an end surface of an output end of the speed reducer 17, a gear transmission mechanism 19 is disposed on an output shaft of the speed reducer 17, a magnetic axle 20 is disposed inside the magnetic axle box 13, one end of the magnetic axle 20 extends to the outer side of the magnetic axle box 13 and is connected with the gear transmission mechanism 19, and the magnetic axle 20 is in meshing transmission with the speed reducer 17 through the gear transmission mechanism 19.
As shown in fig. 5, the gear transmission mechanism 19 includes a transmission gear on a gear shaft of the speed reducer 17, a middle gear engaged with the transmission gear, and a left rotating shaft gear and a right rotating shaft gear respectively engaged with the middle gear, the magnetic shaft 20 includes a first magnetic shaft and a second magnetic shaft, the right end of the first magnetic shaft is fixedly connected with the left rotating shaft gear, and the right end of the second magnetic shaft is fixedly connected with the right rotating shaft gear.
Further, in order to improve the applicability of the equipment, the upper surface of the hanging beam 1 is provided with a power supply unit 21, the power supply unit 21 is in cable connection with a power supply switch 15, the power supply switch 15 is in cable connection with the motor 14 and the controller 16 respectively, and the power supply unit 21 supplies power, so that the equipment can be used for field operation, the operation places are wider, and the power supply unit 21 can use a rechargeable storage battery or an external power supply.
Further, in order to facilitate magnetic field control, the motor 14 comprises a driving module and a braking module, the signal output port 5 of the tension sensor 4 is connected with a controller 16 through a cable, the controller 16 is respectively connected with the driving module and the braking module of the motor 14 through cables, and the angle sensor 18 is connected with the controller 16 through a cable.
As shown in the connection diagram of the electrical control cable of fig. 7, when a load is lifted off the ground, the tension sensor 4 senses tension and then sends a signal to the controller 16, the controller 16 sends a signal to the driving module of the motor 14, the driving module locks the motor 14 after receiving the signal, the rotating shaft of the motor 14 stops rotating, the corresponding magnetic shaft 20 stops rotating at the same time, at this time, the magnetic circuit is locked, as long as the tension signal of the tension sensor 4 exists, the device always outputs magnetic force outwards, even if a demagnetization switch is pressed down or other demagnetization operations cannot close the magnetic field, so that the phenomenon that the magnetic circuit is closed by manual misoperation to cause the sucked material to fall off is effectively avoided; when the load falls to the ground, the tension sensor 4 sends a tension change signal, the signal is transmitted to the controller 16, the controller 16 releases the work locking of the motor 14, the magnetic field closing operation can be performed at the moment, the demagnetization switch is pressed, the motor 14 works, the rotation of the rotating shaft of the motor 14 drives the magnetic shaft 20 to rotate, when the magnetic shaft 20 rotates to a set magnetic field closing angle, the angle sensor 18 sends a signal to the controller 16, the controller 16 transmits a signal to the brake module of the motor 14, the motor 14 stops rotating, at the moment, the external magnetic force of the magnetic shaft 20 is closed, and the unloading operation can be performed.
Further, in order to facilitate observation of the operation condition of the equipment, especially to warn others in the hoisting process, both ends of the upper surface of the power supply unit 21 are provided with signal indicating lamps 22 matched with the hoisting permanent magnets 3 at the corresponding ends, the signal indicating lamps 22 are in cable connection with the controllers 16 at the corresponding ends, when the magnetic circuit is closed, the signal indicating lamps 22 are displayed in green, when the magnetic circuit is opened, the signal indicating lamps 22 are displayed in red, and when the magnetic circuit is in the middle switching state, the signal indicating lamps 22 are displayed in blue.
The utility model discloses a permanent magnetism lifting device with magnetic field automatic locking function comprises hanging beam 1, lifting chain 2 and jack-up permanent magnet 3, is connected through force sensor 4 between hanging beam 1 and the lifting chain 2, force sensor 4 provides different signals for magnetic field control assembly 6 through signal output port 5 when load liftoff and load fall to the ground, and magnetic field control assembly 6 locks and removes the locking operation according to the signal to the magnetic field, avoids the maloperation to cause magnetic force to close, and the load drops, has promoted the operation safety of this equipment; the two sides of the tension sensor 4 are provided with the protection plates 10, the lifting holes 12 in the protection plates 10 are waist-shaped holes, the inner length of each lifting hole 12 is larger than the inner diameter of each mounting hole, the structure ensures the sensitivity of the tension sensor 4, and meanwhile, the hanging beam 1 and the hanging chain 2 can be prevented from falling off due to the breakage of the tension sensor 4, and the safety performance 4 is improved; the upper surface of the hanging beam 1 is provided with the power supply unit 21, the power supply unit 21 is in cable connection with the power supply switch 15, the power supply switch 15 is in cable connection with the motor 14 and the controller 16 respectively, and power is supplied through the power supply unit 21, so that the equipment is wider in operation places and higher in applicability; the angle sensor 18 can accurately control the rotation angle of the magnetic shaft 20, further control the external magnetic force, and is better in applicability compared with a traditional limit proximity switch.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A permanent magnetism lifts by crane equipment with automatic locking function in magnetic field, characterized by: the hoisting permanent magnet control device is characterized by comprising a hoisting beam (1), a hoisting chain (2) and a hoisting permanent magnet (3), wherein tension sensors (4) are arranged at the left end and the right end of the hoisting beam (1), the hoisting beam (1) and the hoisting chain (2) are connected through the tension sensors (4), a signal output port (5) is formed in each tension sensor (4), a magnetic field control assembly (6) is fixedly arranged in the hoisting permanent magnet (3), and the tension sensors (4) are in cable connection with the magnetic field control assembly (6) through the signal output ports (5).
2. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 1, wherein: the hanging beam is characterized in that fixing supports (7) are welded at the left end and the right end of the upper surface of the hanging beam (1), mounting holes (8) are formed in the upper end and the lower end of the tension sensor (4), the tension sensor (4) is connected with the fixing supports (7) through the mounting holes (8) in the lower end of the tension sensor in a pin mode, and the lower end of the hanging chain (2) is connected with the tension sensor (4) through the mounting holes (8) in the upper end of the tension sensor (4) in a pin mode.
3. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 2, wherein: the fixed support (7) comprises two fixed plates (9) which are symmetrically arranged front and back, the bottom surfaces of the fixed plates (9) are connected with the upper surface of the hanging beam (1) in a welding mode, the tension sensor (4) is located between the two fixed plates (9), a through hole is formed in the front surface of each fixed plate (9), the tension sensor (4) is connected with the fixed plates (9) through pin shafts through mounting holes (8) in the lower ends of the tension sensor, the left end and the right end of each fixed plate (9) are symmetrically provided with through holes, the through holes are connected with pin shafts in a splicing mode, and opening pins are arranged at outer openings of the pin shafts.
4. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 2, wherein: both sides of the tension sensor (4) are provided with protection plates (10), the lower end of each protection plate (10) is coaxially provided with a fixing hole (11) in a mounting hole (8) at the lower end of the tension sensor (4), and the upper end of each protection plate (10) is coaxially provided with a lifting hole (12) in a mounting hole (8) at the upper end of the tension sensor (4).
5. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 4, wherein: the lifting hole (12) is a waist-shaped hole, and the inner length of the lifting hole (12) is larger than the inner diameter of the mounting hole (8).
6. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 1, wherein: magnetic field control subassembly (6) including magnetic axle box (13), motor (14), switch (15) and controller (16) all fixed the upper surface that sets up in magnetic axle box (13), be provided with speed reducer (17) in the pivot of motor (14), fixed mounting has angle sensor (18) on the terminal surface of the output of speed reducer (17), the output shaft of speed reducer (17) is provided with gear drive (19), the inside of magnetic axle box (13) is provided with magnetic shaft (20), the one end of magnetic shaft (20) extends to the outside of magnetic axle box (13) and is connected with gear drive (19), magnetic shaft (20) through gear drive (19) and speed reducer (17) meshing transmission.
7. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 6, wherein: the upper surface of hanging beam (1) is provided with power supply unit (21), power supply unit (21) and switch (15) cable junction, switch (15) respectively with motor (14) and controller (16) cable junction.
8. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 6, wherein: the motor (14) comprises a driving module and a braking module, a signal output port (5) of the tension sensor (4) is in cable connection with the controller (16), the controller (16) is in cable connection with the driving module and the braking module of the motor (14) respectively, and the angle sensor (18) is in cable connection with the controller (16).
9. The permanent magnet hoisting equipment with the magnetic field automatic locking function as claimed in claim 7, wherein: both ends of power supply unit (21) upper surface all are provided with and correspond end jack-up permanent magnet (3) assorted signal indicator (22), signal indicator (22) and the controller (16) cable junction that corresponds the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220968803.6U CN217102643U (en) | 2022-04-25 | 2022-04-25 | Permanent magnet hoisting equipment with magnetic field automatic locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220968803.6U CN217102643U (en) | 2022-04-25 | 2022-04-25 | Permanent magnet hoisting equipment with magnetic field automatic locking function |
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| CN217102643U true CN217102643U (en) | 2022-08-02 |
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| CN202220968803.6U Active CN217102643U (en) | 2022-04-25 | 2022-04-25 | Permanent magnet hoisting equipment with magnetic field automatic locking function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621047A (en) * | 2023-07-19 | 2023-08-22 | 中国水产科学研究院黄海水产研究所 | Lifting device and method for retired oil-gas platform operation |
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2022
- 2022-04-25 CN CN202220968803.6U patent/CN217102643U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621047A (en) * | 2023-07-19 | 2023-08-22 | 中国水产科学研究院黄海水产研究所 | Lifting device and method for retired oil-gas platform operation |
| CN116621047B (en) * | 2023-07-19 | 2023-10-03 | 中国水产科学研究院黄海水产研究所 | Lifting device and method for retired oil-gas platform operation |
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