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CN-122009972-A - Lifting appliance for simultaneously lifting multiple waste barrels

CN122009972ACN 122009972 ACN122009972 ACN 122009972ACN-122009972-A

Abstract

The invention relates to the technical field of radioactive waste treatment and disposal, and provides a lifting appliance for simultaneously lifting multiple waste barrels, which comprises a lifting bracket and a grabbing head rotatably connected with the lifting bracket, wherein a locking device is arranged between the grabbing head and the lifting bracket, the locking device comprises a locking disc fixedly connected with the grabbing head, a locking hole formed in the locking disc and a pin slidingly connected with the lifting bracket, the pin is in plug-in fit with the locking hole, a pushing device for pushing the pin to slide is arranged between the pin and the lifting bracket, the pushing device comprises a sleeve fixedly connected with the lifting bracket, a pushing piece fixedly connected with the pin and a spring sleeved outside the pin, and an unlocking device for unlocking the pin and the locking disc is also arranged between the pin and the sleeve. The invention has the beneficial effects that the mechanical locking of the position of the grabbing head after rotation is independently realized by the locking device arranged between the grabbing head and the hanging bracket, so that the exposure time of operators in a radioactive environment is obviously reduced, the irradiated dose is reduced, and the operation safety is improved.

Inventors

  • ZHANG ZHEN
  • LV GANG
  • WU HONG
  • PENG FANGQI
  • FAN ZIQI
  • LIU SHANGXI
  • ZHAO ZHUO
  • WANG LIANG

Assignees

  • 中核清原环境技术工程有限责任公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (9)

  1. 1. The lifting appliance for simultaneously lifting the multiple waste barrels is characterized by comprising a lifting frame (1) connected with a crane and a plurality of grabbing heads (2) rotationally connected with the lifting frame (1), wherein a locking device (3) for fixing the grabbing heads (2) is arranged between each grabbing head (2) and the lifting frame (1); The locking device (3) comprises a locking disc (31) fixedly connected with the grabbing head (2), a locking hole (311) formed in the locking disc (31) and a pin (32) slidingly connected with the hanging frame (1), the pin (32) is in plug-in connection with the locking hole (311), a pushing device (4) for pushing the pin (32) to slide is arranged between the pin (32) and the hanging frame (1), the pushing device (4) comprises a sleeve (41) fixedly connected with the hanging frame (1), a pushing piece (42) fixedly connected with the pin (32) and a spring (43) sleeved outside the pin (32), one end of the pin (32) is inserted into the sleeve (41) and slidingly connected with the sleeve (41), two ends of the spring (43) are fixedly connected with one sides of the pushing piece (42) and the sleeve (41) away from the hanging frame (1), the pin (32) is pushed by the pushing piece (42) to be inserted into the locking hole (311), and an unlocking device (5) for unlocking the pin (32) and the locking disc (31) is further arranged between the pin (41).
  2. 2. The lifting appliance for simultaneously lifting multiple waste barrels according to claim 1, wherein the unlocking device (5) comprises an electromagnet (51) fixedly connected with one end of the sleeve (41) close to the lifting appliance (1) and a permanent magnet (52) fixedly connected with the pin (32), the permanent magnet (52) is in sliding connection with the sleeve (41), and the electromagnet (51) is electrified to be mutually adsorbed with the permanent magnet (52).
  3. 3. The lifting appliance for simultaneously lifting multiple waste barrels according to claim 1, wherein a synchronous driving device (6) for synchronously driving the gripping heads (2) to rotate and the gripping heads (2) to move is arranged among the gripping heads (2), the synchronous driving device (6) comprises a sun gear (61) and a gear ring (62) which are fixedly and rotatably connected with the lifting appliance (1), a planet wheel (63) arranged between the sun gear (61) and the gear ring (62) and a planet carrier (64) arranged between the planet wheels (63), the sun gear (61) is connected with a driving piece, the planet wheel (63) is meshed with the sun gear (61) and the gear ring (62), the planet wheel (63) is connected with a rotating shaft (631), the rotating shaft (631) is fixedly connected with the gripping heads (2) and used for driving the gripping heads (2) to rotate, and the planet carrier (64) is rotatably connected with the rotating shaft (631).
  4. 4. A lifting appliance for simultaneously lifting multiple waste barrels according to claim 3, characterized in that a bearing mechanism (7) for transferring load is further arranged between the lifting appliance (1) and the grabbing head (2), the bearing mechanism (7) comprises a bearing barrel (71) sleeved outside the synchronous driving device (6) and a bearing ring (72) fixedly connected with the grabbing head (2), the bearing barrel (71) is rotationally connected with the lifting appliance (1), a mounting hole is formed in the bottom end of the bearing barrel (71), the bearing ring (72) is located in the mounting hole and rotationally connected with the mounting hole, and the bearing ring (72) is used for transferring load born by the grabbing head (2) to the bearing barrel (71).
  5. 5. The lifting appliance for simultaneously lifting multiple waste barrels according to claim 4, wherein a rotating groove is formed in the outer side of the lifting bracket (1), the bearing barrel (71) is fixedly connected with a rotating ring (8), and the rotating ring (8) is positioned in the rotating groove and is rotationally connected with the rotating groove.
  6. 6. The lifting appliance for simultaneously lifting multiple waste barrels according to claim 4, wherein the grabbing head (2) comprises a connecting rod (21) fixedly connected with a rotating shaft (631), a barrel (22) fixedly connected with a bearing ring (72), a cover plate (23) for sealing the barrel and fixedly connected with the connecting rod (21) and a grabbing hook (24) connected with the barrel (22), the cover plate (23) is fixedly connected with the barrel (22), a plurality of grabbing hooks (24) are arranged, and a movable device (9) for driving the grabbing hooks (24) to grab is arranged between the grabbing hooks (24) and the barrel (22).
  7. 7. The lifting appliance for simultaneously lifting multiple waste barrels according to claim 6, wherein the movable device (9) comprises a fixed ring (91) fixedly connected with the barrel body (22), fixed support legs (92) fixedly connected with the fixed ring (91) and connecting blocks (93) fixedly connected with a plurality of grapples (24), each grapple (24) corresponds to one fixed support leg (92), the middle part of each grapple (24) is rotationally connected with the fixed support leg (92), the connecting blocks (93) are provided with driving pieces for driving the connecting blocks (93) to slide, one ends of the grapples (24) are provided with clamping grooves for grabbing objects, and the connecting blocks (93) are rotationally connected with one ends of the grapples (24) away from the clamping grooves.
  8. 8. A lifting appliance for simultaneous lifting of multiple waste drums according to claim 7, wherein the angle between the fixing leg (92) and the fixing ring (91) is 120 °.
  9. 9. The lifting appliance for simultaneously lifting multiple waste barrels according to claim 7, wherein the connecting block (93) is provided with a proximity switch (10) for detecting whether the grabbing head (2) is attached to an object.

Description

Lifting appliance for simultaneously lifting multiple waste barrels Technical Field The invention relates to the technical field of radioactive waste treatment, in particular to a lifting appliance for simultaneously lifting multiple waste barrels. Background In the field of nuclear industry, low and horizontal radioactive solid wastes are generally packaged and stored by adopting a 200L steel drum meeting EJ1042-2014 standard. In order to realize the efficient lifting and stacking operation of 200L waste barrels, four-barrel mechanical lifting devices are widely adopted in the industry, namely, four 200L waste barrels are simultaneously grabbed in one operation. The operation mode can reduce the lifting times, thereby shortening the total exposure time of operators in the radiation environment and conforming to the principle of 'radiation protection optimization' (ALARA) of the nuclear industry. The basic functions of the existing 200L four-barrel mechanical sling are that the core execution part is a grabbing head, and the basic functions comprise lowering the sling to the upper part of a waste barrel, rotating an adjusting angle, grabbing a barrel body, lifting, transferring and releasing stacking. In order to adapt to different stacking requirements, the grabbing head is generally provided with a rotating function, and the grabbing gesture can be adjusted according to the field condition. The existing grabbing head structure mainly comprises a rotating mechanism, a grabbing hook fixing component, a clamp, a grabbing hook driving mechanism and the like. In the operation process, the grabbing head is lifted to the upper part of the waste barrel by the crane, and the grabbing hook is driven to be closed to complete grabbing after the angle is adjusted by the rotating mechanism. However, although the existing grabbing head has a rotating function, after the grabbing head descends to the position above the waste bin, the grabbing head cannot be locked automatically, the grabbing head is difficult to maintain stably, an operator must enter a storage area of the waste bin, the grabbing head angle is adjusted manually and the grabbing head is aligned to the bin body, the radiation dose rate is high because the area is a direct contact area of radioactive waste, manual intervention is needed for each lifting operation, accumulated illuminated dose is increased obviously, the exposure time of the operator in the radiation environment is long, and the personal safety of the operator is damaged, so that a new technical scheme is required to be provided for solving the technical problems. Disclosure of Invention The application provides a lifting appliance for simultaneously lifting a plurality of waste barrels, wherein a locking device is independently arranged between each grabbing head and a lifting bracket, when the grabbing heads rotate in place, pins are automatically inserted into locking holes of a locking disc under the action of a pushing device, so that the mechanical locking of the rotating positions of the grabbing heads is realized. The application provides a lifting appliance for simultaneously lifting multiple waste barrels, which comprises a lifting bracket connected with a crane and a plurality of grabbing heads rotatably connected with the lifting bracket, wherein a locking device for fixing the grabbing heads is arranged between each grabbing head and the lifting bracket; The locking device comprises a locking disc fixedly connected with the grabbing head, a locking hole formed in the locking disc and a pin slidingly connected with the hanging frame, the pin is in plug-in fit with the locking hole, a pushing device for pushing the pin to slide is arranged between the pin and the hanging frame, the pushing device comprises a sleeve fixedly connected with the hanging frame, a pushing piece fixedly connected with the pin and a spring sleeved on the outer side of the pin, one end of the pin is inserted into the sleeve and is slidingly connected with the sleeve, two ends of the spring are respectively fixedly connected with the pushing piece and one side, away from the hanging frame, of the sleeve, the spring drives the pushing piece to push the pin to be inserted into the locking hole, and an unlocking device for unlocking the pin and the locking disc is further arranged between the pin and the sleeve. By adopting the technical scheme, the locking device is independently arranged between each grabbing head and the hanging bracket, after the grabbing heads rotate in place, the pins are automatically inserted into the locking holes of the locking disc under the action of the pushing device, so that the mechanical locking of the rotating positions of the grabbing heads is realized, the structure does not need to manually enter a high-radiation area to align and fix, the problems that the grabbing head cannot be kept and manual intervention is needed in the prior art are thoroughly solved, the exposure t