CN116477506B - Power-off protection device of tower crane - Google Patents
Power-off protection device of tower crane Download PDFInfo
- Publication number
- CN116477506B CN116477506B CN202310725413.5A CN202310725413A CN116477506B CN 116477506 B CN116477506 B CN 116477506B CN 202310725413 A CN202310725413 A CN 202310725413A CN 116477506 B CN116477506 B CN 116477506B
- Authority
- CN
- China
- Prior art keywords
- box
- transfer
- driving
- rack
- transfer box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000725 suspension Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000009467 reduction Effects 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The application relates to the technical field of cranes, and discloses a power-failure protection device of a tower crane. According to the application, the loading box, the transfer box, the locking assembly, the driving assembly and the suspension mechanism are arranged, when the crane is powered off and the goods hover, the driving assembly transfers part of the goods in the loading box to the transfer box, and triggers the locking assembly to separate the transfer box from the loading box, at the moment, the goods in the transfer box and the loading box can meet the load requirement of a standby power supply of the crane, and the suspension mechanism runs under the standby power supply to sequentially lower the transfer box and the loading box to the ground.
Description
Technical Field
The application relates to the technical field of cranes, in particular to a power-failure protection device of a tower crane.
Background
The tower crane is also called as a tower crane, and the main structure of the tower crane comprises a tower body, a suspension arm, a balance arm, a slewing mechanism, a load trolley and the like, and has a large working range, and is mainly used for vertical transportation of materials and component installation in multi-layer and high-rise building construction. In order to ensure the normal safe use of the tower crane, various safety devices, such as an overweight limiting device, a height limiting device, a rotation limiting device, a lifting hook safety device, a wire rope groove disengaging safety device and various sensors, are generally arranged on the tower crane, and the safety devices ensure that the tower crane is safer and more reliable in operation.
The existing power-off protection measures for the tower crane generally lock the suspension arm and the winch on the load trolley automatically through the brake, the mode can ensure the safety of the tower crane, but loaded goods still hover in the air, potential safety hazards of shaking under inertia or wind force are still large, although the tower crane is generally provided with a standby storage power supply, the running load of the standby storage power supply is generally lower, and the direct falling work for the heavy goods is easy to cause the breakage and damage of transmission parts on the load trolley, so that the safety risk is further increased.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a power-failure protection device of a tower crane, which has the advantages of strong safety and the like, and solves the problems that the existing tower crane has great potential safety hazard in the air when cargoes hover after power failure, and the standby power supply is insufficient to enable the cargoes to safely fall to the ground.
In order to solve the technical problems, the application provides the following technical scheme: the power-off protection device of the tower crane comprises a crane main body, wherein a load trolley is arranged on the crane main body, and a loading box, a transfer box, a locking assembly, a driving assembly and a suspension mechanism are arranged on the load trolley;
the locking component is arranged at the joint of the loading box and the transfer box and is used for locking the loading box and the transfer box;
the loading box is internally provided with a main chamber and an auxiliary chamber, the auxiliary chamber is communicated with the inner cavity of the transfer box, the inside of the auxiliary chamber is provided with a transfer trolley, and the transfer trolley is used for bearing cargoes and driving a locking assembly;
the driving assembly is arranged on the inner bottom wall of the transfer box and is in transmission connection with the transfer trolley, and the driving assembly is used for driving the load trolley to move from the inside of the loading box to the inside of the transfer trolley;
the suspension mechanism is arranged in the load trolley and is used for suspending the carrying box and the transfer box;
when the hoist main part promotes the in-process outage of goods, the goods that drive assembly operation back drive transfer car (buggy) and transfer car (buggy) are gone up is inside to the transfer case, and the transfer car (buggy) is moved to the inside back drive locking subassembly of transfer case, makes transfer car (buggy) and loading box unblock separation, later suspension mechanism operation is with loading box and transfer case under to ground in proper order.
Preferably, the locking component comprises a lock pin, a lock hook and a worm, wherein the lock pin is fixedly connected with the side wall of the loading box, the lock hook is movably connected with the side wall of the transfer box through a rotating shaft, the lock hook is clamped with the lock pin, worm gear teeth are arranged on the edge of the lock hook, the worm is meshed with the worm gear teeth, two bearing seats are arranged on the worm, and the two bearing seats are fixedly connected with the side wall of the transfer box.
Preferably, the worm bottom is provided with down the gear and with lower gear engagement's lower rack, lower gear and worm bottom mounting, lower rack and transfer box lateral wall sliding connection, lower rack one end fixedly connected with driven push pedal, the lower rack other end is connected with the transfer box lateral wall through reset spring, transfer car (buggy) edge fixedly connected with initiative push pedal, initiative push pedal corresponds with driven push pedal position.
Preferably, the transfer box is close to the fixed guide rail that is provided with of loading box one side and extends to transfer box top, two sliding connection has the sliding door between the guide rail, the worm top be provided with the gear and with last gear engagement's last rack, go up the gear and fix on the worm top, go up rack and transfer box lateral wall sliding connection, it is fixed with the stopper that extends to the sliding door bottom to go up the rack tip.
Preferably, the drive assembly includes loose axle and slide rail, the loose axle rotates with the interior bottom wall of transfer box to be connected, be fixed with drive gear and take-up pulley on the loose axle, the rolling has the stay cord on the take-up pulley, stay cord one end and transfer car (buggy) fixed connection, slide rail and transfer box interior bottom wall fixed connection, sliding connection has the drive rack on the slide rail, drive rack and drive gear engagement, drive rack one end fixedly connected with extension spring, drive rack one end and slide rail tip fixed connection are kept away from to the extension spring.
Preferably, the limiting hole is formed in the surface of the driving rack, the mounting piece is fixed on the sliding rail, the electromagnetic push rod is fixedly connected to the mounting piece, and the output shaft of the electromagnetic push rod extends along the direction where the axial limiting hole is located.
Preferably, the suspension mechanism comprises a reduction gearbox, a motor is fixed at the input end of the reduction gearbox, two output shafts are arranged on the reduction gearbox, winches are arranged on the two output shafts of the reduction gearbox, and the two winches are respectively connected with the loading box and the transfer box.
Preferably, the winch comprises a supporting frame, a winding drum is arranged on the supporting frame, a lifting rope is wound on the winding drum, the winding drum is movably connected with the supporting frame through a central shaft, a brake is arranged at one end of the central shaft, and the other end of the central shaft is connected with an output shaft of a reduction gearbox through an electromagnetic clutch.
Preferably, the inner bottom wall of the loading box and the inner bottom wall of the transferring box are both provided with guide rails, and the guide rails in the loading box correspond to the guide rails in the transferring box in position.
Compared with the prior art, the application provides the power-off protection device of the tower crane, which has the following beneficial effects:
1. this kind of tower crane loses electric protection device, through setting up loading box, transfer box, locking Assembly, actuating assembly and suspension mechanism, when hoist outage leads to the goods to hover, actuating assembly is transported the partial goods in the loading box to the transfer box, and trigger locking Assembly, separate transfer box and loading box, the load requirement of hoist stand-by power supply can be satisfied to the goods homoenergetic in transfer box and the loading box this moment, suspension mechanism moves under stand-by power supply and descends transfer box and loading box to ground in proper order, the hoist outage has effectively been solved through this kind and stand-by power supply output power is lower unable problem of once dropping the ground with the goods, the potential safety hazard has in time been eliminated when the hoist outage, the practicality is strong.
2. This kind of tower crane loses electric protection device, through setting up rack, upward gear, stopper and sliding door, the inside goods of loading box is transported and is moved down to the driving sliding door when transporting the incasement portion, and the transfer box after will breaking away from seals, avoids the in-process goods unrestrained of transfer box, safer.
3. This kind of tower crane loses electric protection device through setting up the guide rail, can lead the transfer car (buggy), guarantees stability and accuracy in the transfer car (buggy) removal in-process.
Drawings
FIG. 1 is a schematic perspective view of a power failure protection device for a tower crane according to the present application;
FIG. 2 is a perspective view showing the connection state of the loading box and the transfer box according to the present application;
FIG. 3 is a schematic view of the internal structure of the loading box of the present application;
FIG. 4 is an enlarged view of portion B of FIG. 3 in accordance with the present application;
FIG. 5 is a schematic cross-sectional view showing the connection state of the loading box and the transfer box of the present application;
FIG. 6 is a schematic view of the locking assembly of the present application;
FIG. 7 is an enlarged view of portion C of FIG. 6 in accordance with the present application;
FIG. 8 is a schematic view of the bottom structure of the transfer trolley of the present application;
FIG. 9 is an enlarged view of portion A of FIG. 8 in accordance with the present application;
FIG. 10 is an exploded view of the drive assembly of the present application;
FIG. 11 is an enlarged view of portion D of FIG. 10 in accordance with the present application;
fig. 12 is an independent state effect diagram of the load-carrying trolley of the application.
In the figure: 1. a crane body; 2. a load carrying trolley; 3. a loading box; 31. a main chamber; 32. a sub-chamber; 33. a transfer vehicle; 331. an active push plate; 4. a transfer box; 41. a guide rail; 42. a sliding door; 5. a locking assembly; 51. a locking pin; 52. a latch hook; 53. a worm; 54. a bearing seat; 55. a lower gear; 56. a lower rack; 57. a driven push plate; 58. a return spring; 6. a drive assembly; 61. a movable shaft; 62. a slide rail; 63. a drive gear; 64. a wire winding wheel; 65. a pull rope; 66. a drive rack; 67. a tension spring; 68. a limiting hole; 69. a mounting piece; 60. an electromagnetic push rod; 7. a suspension mechanism; 71. a reduction gearbox; 72. a motor; 73. a hoist; 731. a support frame; 732. winding up a winding drum; 733. a hanging rope; 734. a center shaft; 735. a brake; 736. an electromagnetic clutch; 8. a top gear; 9. a rack is arranged; 10. a limiting block; 11. and a guide rail.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As described in the background art, the application provides a power-failure protection device of a tower crane in order to solve the technical problems.
Referring to fig. 1-2, a power-off protection device of a tower crane comprises a crane main body 1, wherein a load trolley 2 is arranged on the crane main body 1, and a loading box 3, a transfer box 4, a locking assembly 5, a driving assembly 6 and a suspension mechanism 7 are arranged on the load trolley 2;
the locking component 5 is arranged at the joint of the loading box 3 and the transferring box 4, and the locking component 5 is used for locking the loading box 3 and the transferring box 4;
a main chamber 31 and an auxiliary chamber 32 are arranged in the loading box 3, the auxiliary chamber 32 is communicated with the inner cavity of the transfer box 4, a transfer trolley 33 is arranged in the auxiliary chamber 32, and the transfer trolley 33 is used for bearing cargoes and driving the locking assembly 5;
the driving assembly 6 is arranged on the inner bottom wall of the transfer box 4, the driving assembly 6 is in transmission connection with the transfer trolley 33, and the driving assembly 6 is used for driving the load trolley 2 to move from the inside of the loading box 3 to the inside of the transfer trolley 33;
the suspension mechanism 7 is arranged inside the load trolley 2, and the suspension mechanism 7 is used for suspending the loading box 3 and the transfer box 4;
when the power is off in the process of lifting the goods by the crane main body 1, the driving assembly 6 drives the transfer trolley 33 and the goods on the transfer trolley 33 to move into the transfer box 4 after running, the transfer trolley 33 drives the locking assembly 5 after moving into the transfer box 4, the transfer trolley 33 is unlocked and separated from the loading box 3, and then the suspension mechanism 7 runs to sequentially lower the loading box 3 and the transfer box 4 to the ground.
The crane is provided with a standby power supply except a normal working power supply, the standby power supply of the crane is the same as that of the prior art, the locking assemblies 5 are preferably arranged in two groups and are symmetrically distributed, the inner cavity of the loading box 3 is divided into a main cavity 31 and an auxiliary cavity 32 by the partition plates, the maximum load in the main cavity 31 and the auxiliary cavity 32 is not more than the maximum load of the standby power supply, the maximum load of the standby power supply is less than the total maximum load of the main cavity 31 and the auxiliary cavity 32, the auxiliary cavity 32 is placed on the surface of a transfer trolley 33 during loading of goods, the load trolley 2 and a suspension mechanism 7 in the load trolley can be driven by the normal working power supply of the crane or the standby power supply of the crane, and in a normal working state, the suspension mechanism 7 drives the loading box 3 and the transfer box 4 to synchronously move;
when the crane is used, under the condition that power is cut off in the process of suspending cargoes in the operation process of the crane main body 1, a safety device of the crane is triggered, the loading box 3 and the transfer box 4 are automatically locked through the power cut of a brake, the driving assembly 6 is operated at the moment, cargoes on the transfer trolley 33 and the transfer trolley 33 are pulled into the transfer box 4, the locking assembly 5 is driven when the transfer trolley 33 moves into the transfer box 4, the joint of the transfer box 4 and the loading box 3 is unlocked, the transfer box 4 is separated from the loading box 3, the suspension mechanism 7 is started through a standby power supply of the crane, the cargoes in the loading box 3 are lowered to the ground, and the cargoes in the transfer box 4 are lowered to the ground;
through setting up loading box 3, transfer box 4, locking element 5, actuating assembly 6 and suspension mechanism 7, when hoist outage leads to the goods to hover, the actuating assembly 6 is moved the back and is transported the partial goods in the loading box 3 to transfer box 4, and trigger locking element 5, separate transfer box 4 and loading box 3, the load requirement of hoist stand-by power supply can be satisfied to the goods homoenergetic in transfer box 4 and loading box 3 this moment, suspension mechanism 7 moves under stand-by power supply and descends transfer box 4 and loading box 3 to ground in proper order, the hoist outage has effectively been solved through this kind of mode and stand-by power supply output power is lower can't be with the problem of goods once place of falling down, in time eliminated the potential safety hazard when the hoist outage, the practicality is strong.
Further, referring to fig. 2-4, the locking assembly 5 includes a lock pin 51, a lock hook 52 and a worm 53, the lock pin 51 is fixedly connected with the side wall of the loading box 3, the lock hook 52 is movably connected with the side wall of the transfer box 4 through a rotating shaft, the lock hook 52 is clamped with the lock pin 51, a worm gear tooth is arranged at the edge of the lock hook 52, the worm 53 is meshed with the worm gear tooth, two bearing seats 54 are mounted on the worm 53, the two bearing seats 54 are fixedly connected with the side wall of the transfer box 4, a lower gear 55 and a lower rack 56 meshed with the lower gear 55 are arranged at the bottom end of the worm 53, the lower gear 55 is fixedly connected with the bottom end of the worm 53, the lower rack 56 is slidably connected with the side wall of the transfer box 4, one end of the lower rack 56 is fixedly connected with a driven push plate 57, the other end of the lower rack 56 is connected with the side wall of the transfer box 4 through a reset spring 58, a driving push plate 331 is fixedly connected with the edge of the transfer box 33, and the driving push plate 331 corresponds to the driven push plate 57 in position;
the number of the lock pins 51 and the lock hooks 52 is two, the angles of the two lock hooks 52 are opposite, two groups of symmetrical threads with opposite rotation directions are arranged on the worm 53, the two groups of threads are respectively meshed with worm gear teeth on the two lock hooks 52, a lower chute is arranged on the side wall of the transfer box 4 in practical application, the lower chute is transversely arranged, a lower sliding block matched with the lower chute is arranged on the lower rack 56, sliding connection is realized, a reset spring 58 is arranged in the lower chute, one end of the reset spring 58 is fixed with the end part of the lower rack 56, and the other end of the reset spring 58 is fixed with the inner wall of the lower chute;
when in use, the transfer trolley 33 moves into the transfer box 4 under the action of the driving component 6, when the transfer trolley 33 is about to completely move into the transfer box 4, the driving push plate 331 contacts the driven push plate 57, the driving push plate 331 continuously moving along with the transfer trolley 33 pushes the driven push plate 57, the driven push plate 57 drives the lower rack 56 to slide when moving, the lower rack 56 drives the lower gear 55 to rotate when sliding, meanwhile, the lower rack 56 compresses the reset spring 58 when sliding, the lower gear 55 drives the worm 53 to rotate when rotating, the worm 53 drives the latch hook 52 to rotate and gradually separate from the latch pin 51 when rotating, and finally, when the transfer trolley 33 completely moves into the transfer box 4, the latch hook 52 completely separates from the latch pin 51, and then the connection between the transfer box 4 and the loading box 3 is released;
through setting up initiative push pedal 331, driven push rod, lower rack 56, lower gear 55 and worm 53, will drive a plurality of latch hooks 52 and break away from lockpin 51 when transfer car (buggy) 33 removes to transfer case 4 inside, and then relieve the connection between transfer case 4 and the loading case 3, made things convenient for transfer case 4 and loading case 3 mutually separate, be favorable to follow-up respectively to transfer the goods down.
Further, referring to fig. 2 and 7, two guide rails 41 extending to the top of the transfer box 4 are fixedly arranged on one side of the transfer box 4 close to the loading box 3, a sliding door 42 is slidably connected between the two guide rails 41, an upper gear 8 and an upper rack 9 meshed with the upper gear 8 are arranged on the top end of the worm 53, the upper gear 8 is fixed on the top end of the worm 53, the upper rack 9 is slidably connected with the side wall of the transfer box 4, and a limiting block 10 extending to the bottom of the sliding door 42 is fixed on the end part of the upper rack 9;
the side wall of the transfer box 4 is provided with an upper sliding groove, the upper sliding groove is transversely arranged, and an upper sliding block matched with the upper sliding groove is arranged on the upper rack 9, so that sliding connection is realized;
in use, when the worm 53 rotates, the upper gear 8 at the top is driven to rotate in addition to the plurality of lock hooks 52, the upper gear 8 is driven to move when rotating, the upper rack 9 is driven to move by the movement of the upper rack 9, the stopper 10 is separated from the bottom of the sliding door 42, and finally when the transfer trolley 33 completely moves into the transfer box 4, the bottom of the sliding door 42 loses support, slides to the bottom under the action of gravity, and seals the transfer box 4;
through setting up gear 8, last rack 9, stopper 10 and sliding door 42, be favorable to removing the transfer box 4 inside after the transfer car (buggy) 33, with transfer box 4 closure, reduce the unrestrained risk of goods, safer.
Further, referring to fig. 5 and 11, the driving assembly 6 includes a movable shaft 61 and a sliding rail 62, the movable shaft 61 is rotatably connected with the inner bottom wall of the transfer box 4, a driving gear 63 and a take-up pulley 64 are fixed on the movable shaft 61, a pull rope 65 is wound on the take-up pulley 64, one end of the pull rope 65 is fixedly connected with the transfer car 33, the sliding rail 62 is fixedly connected with the inner bottom wall of the transfer box 4, a driving rack 66 is slidably connected on the sliding rail 62, the driving rack 66 is meshed with the driving gear 63, a tension spring 67 is fixedly connected with one end of the driving rack 66, and one end of the tension spring 67 far away from the driving rack 66 is fixedly connected with the end of the sliding rail 62; a limiting hole 68 is formed in the surface of the driving rack 66, a mounting sheet 69 is fixed on the sliding rail 62, an electromagnetic push rod 60 is fixedly connected to the mounting sheet 69, and the output shaft of the electromagnetic push rod 60 extends in the direction of the axial limiting hole 68;
wherein, the electromagnetic push rod 60 can adopt an electromagnetic push rod with the publication number of CN 213243787U; the electromagnetic push rod 60 is powered by a normal working power supply of the crane main body 1, in a normal working state of the crane main body 1, an output shaft of the electromagnetic push rod 60 is inserted into the limit hole 68 after being electrified, and the tension spring 67 is in an extension state;
in use, the driving rack 66 is manually pushed to move towards the inside of the transfer box 4, the driving rack 66 moves to enable the tension spring 67 to be lengthened, then the electromagnetic push rod 60 is electrified and then the output shaft is just inserted into the limit hole 68 on the driving rack 66, so that the driving rack 66 is locked, the tension spring 67 is in a lengthening and accumulating state, the take-up pulley 64 is in a paying-off state, the pull rope 65 is loose, after goods are loaded on the transfer trolley 33, the transfer trolley 33 is pushed into the auxiliary chamber 32 together with the goods, and the pull rope 65 is in a just straightening state;
preferably, when the transfer trolley 33 is inside the auxiliary chamber 32, a wedge block (not shown in the figure) for limiting the transfer trolley 33 to slide randomly is arranged at one end, far away from the transfer box 4, of the bottom surface of the auxiliary chamber 32, and when the driving rack 66 is in contact with and locked with the wedge block, the tension of the tension spring 67 is maximum in the initial stage of releasing the tension of the tension spring 67, so that the transfer trolley 33 passes over the wedge block;
when the crane main body 1 is accidentally powered off, the electromagnetic push rod 60 is powered off as well, at the moment, the output shaft of the electromagnetic push rod 60 is contracted to the outside of the limiting hole 68, the driving rack 66 releases the limit, the driving rack 66 slides along the sliding rail 62 under the tension of the tension spring 67, the driving rack 66 drives the driving gear 63 to rotate when sliding, the driving gear 63 drives the movable shaft 61 to rotate when rotating, the movable shaft 61 drives the take-up pulley 64 to rotate when rotating, the pull rope 65 is further wound, the transfer trolley 33 is pulled when the pull rope 65 is wound, and the transfer trolley 33 is further moved towards the inside of the transfer box 4.
Through setting up drive assembly 6, trigger through electromagnetic push rod 60 when hoist main part 1 outage state, make transfer car (buggy) 33 interlock to transfer box 4 internal portion, made things convenient for the automatic transport of goods, need not extra power, energy-conserving and high-efficient.
Further, referring to fig. 8-9, the suspension mechanism 7 includes a reduction gearbox 71, a motor 72 is fixed at an input end of the reduction gearbox 71, the reduction gearbox 71 is provided with two output shafts, windlass 73 are installed on the two output shafts of the reduction gearbox 71, the two windlass 73 are respectively connected with the loading box 3 and the transfer box 4, the windlass 73 includes a supporting frame 731, a winding drum 732 is provided on the supporting frame 731, a lifting rope 733 is wound on the winding drum 732, the winding drum 732 is movably connected with the supporting frame 731 through a central shaft 734, a brake 735 is installed at one end of the central shaft 734, and the other end of the central shaft 734 is connected with an output shaft of the reduction gearbox 71 through an electromagnetic clutch 736;
the motor 72, the electromagnetic brake 735 and the clutch are powered by a standby power supply in a power-off state, the lifting ropes 733 on the two winches 73 are respectively connected with the loading box 3 and the transfer box 4, the two winches 73 are operated together in a normal working state of the crane main body 1, and the operation of the single-side winches 73 is realized by the clutch in the power-off state;
when in use, the motor 72 is electrified, the output shaft of the reduction gearbox 71 rotates, and when the output shaft of the reduction gearbox 71 rotates, the clutch drives the middle shaft 734 of the winding drum 732 to rotate, so as to drive the winding drum 732 to rotate, and the lifting rope 733 is wound, so that the loading box 3 or the transfer box 4 is lowered;
through setting up suspension mechanism 7, motor 72 drives one of them hoist engine 73 operation through stand-by power supply under the outage state, has avoided the overload damage, has made things convenient for simultaneously to gradually transport the goods to ground through stand-by power supply and motor 72, need not manual operation.
Further, referring to fig. 5 and 10, the inner bottom wall of the loading box 3 and the inner bottom wall of the transferring box 4 are provided with guide rails 11, and the guide rails 11 in the loading box 3 correspond to the guide rails 11 in the transferring box 4 in position;
wherein, the gyro wheel of transfer car (buggy) 33 bottom just is located inside the guide rail 11, and when the transfer car (buggy) 33 removes under drive assembly 6 effect, the gyro wheel of transfer car (buggy) 33 bottom rolls along the guide rail 11 in, is favorable to leading transfer car (buggy) 33, avoids the transfer car (buggy) 33 to remove the in-process and produces the skew, and is more stable.
Working principle: when the crane is used, under the condition that power is cut off in the process of running suspended cargoes, the safety device of the crane triggers, so that the loading box 3 and the transfer box 4 hover in the sky, meanwhile, the electromagnetic push rod 60 is powered off, at the same time, the output shaft of the electromagnetic push rod 60 is contracted to the outside of the limiting hole 68, the driving rack 66 releases limit, the driving rack 66 slides along the sliding rail 62 under the tension of the tension spring 67, the driving rack 66 drives the driving gear 63 to rotate when sliding, the driving gear 63 drives the movable shaft 61 to rotate, the movable shaft 61 drives the take-up pulley 64 to rotate, the pulling rope 65 is further wound, the transfer car 33 is pulled to move towards the inside of the transfer box 4 when the pulling rope 65 is wound, when the transfer car 33 is about to move into the transfer box 4 completely, the driving push plate 331 contacts the driven push plate 57, the driving push plate 331 continuously moves along with the transfer car 33 pushes the driven push plate 57, the driven push plate 57 drives the lower rack 56 to slide when the driven push plate 57 moves, the lower rack 56 drives the lower rack 55 to rotate when the lower rack 56 slides, simultaneously the lower rack 56 compresses the reset spring 58 when the lower rack 56 slides, the worm 53 is driven to rotate, the worm 53 when the lower rack 55 rotates, the worm 52 is driven to rotate, the worm 52 is driven to be gradually separated from the lock hook 52 when the worm 52 rotates, and finally, the transfer car 33 is completely moves towards the lock pin 3, and the lock pin 3 is completely separated from the transfer box 4 when the transfer box is completely, and the lock pin is completely separated from the transfer box 51 when the transfer box is completely;
meanwhile, when the worm 53 rotates, the upper gear 8 at the top is driven to rotate in addition to the plurality of lock hooks 52, the upper gear 8 is driven to rotate to push the upper rack 9 to move when rotating, the upper rack 9 moves to drive the limiting block 10 to move, so that the limiting block 10 is separated from the bottom of the sliding door 42, and finally when the transfer trolley 33 completely moves into the transfer box 4, the bottom of the sliding door 42 loses support, slides to the bottom under the action of gravity, and the transfer box 4 is closed;
then the motor 72 is started by a standby power supply, and the electromagnetic clutch 736 on the winch 73 is controlled to operate, the winch 73 singly operates, and the winch 73 receives and releases the lifting rope 733, so that the loading box 3 or the transferring box 4 is controlled to move downwards;
through setting up loading box 3, transfer box 4, locking element 5, actuating assembly 6 and suspension mechanism 7, when hoist outage leads to the goods to hover, the actuating assembly 6 is moved the back and is transported the partial goods in the loading box 3 to transfer box 4, and trigger locking element 5, separate transfer box 4 and loading box 3, the load requirement of hoist stand-by power supply can be satisfied to the goods homoenergetic in transfer box 4 and loading box 3 this moment, suspension mechanism 7 moves under stand-by power supply and descends transfer box 4 and loading box 3 to ground in proper order, the hoist outage has effectively been solved through this kind of mode and stand-by power supply output power is lower can't be with the problem of goods once place of falling down, in time eliminated the potential safety hazard when the hoist outage, the practicality is strong.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a tower crane loses electric protection device, includes hoist main part (1), is provided with load dolly (2), its characterized in that on hoist main part (1): the loading trolley (2) is provided with a loading box (3), a transfer box (4), a locking assembly (5), a driving assembly (6) and a suspension mechanism (7);
the locking component (5) is arranged at the joint of the loading box (3) and the transferring box (4), and the locking component (5) is used for locking the loading box (3) and the transferring box (4);
a main chamber (31) and an auxiliary chamber (32) are arranged in the loading box (3), the auxiliary chamber (32) is communicated with the inner cavity of the transfer box (4), a transfer trolley (33) is arranged in the auxiliary chamber (32), and the transfer trolley (33) is used for bearing cargoes and driving the locking assembly (5);
the driving assembly (6) is arranged on the inner bottom wall of the transfer box (4), the driving assembly (6) is in transmission connection with the transfer trolley (33), and the driving assembly (6) is used for driving the load trolley (2) to move from the inside of the loading box (3) to the inside of the transfer trolley (33);
the suspension mechanism (7) is arranged inside the load trolley (2), and the suspension mechanism (7) is used for suspending the loading box (3) and the transferring box (4);
when power is off in the process of lifting cargoes by the crane main body (1), the driving assembly (6) drives the transfer trolley (33) and cargoes on the transfer trolley (33) to move into the transfer box (4), the transfer trolley (33) moves into the transfer box (4) and then drives the locking assembly (5) to unlock and separate the transfer trolley (33) from the loading box (3), and then the standby power supply drives the suspension mechanism (7) to operate so as to sequentially lower the loading box (3) and the transfer box (4) to the ground;
the locking assembly (5) comprises a lock pin (51), a lock hook (52) and a worm (53), wherein the lock pin (51) is fixedly connected with the side wall of the loading box (3), the lock hook (52) is movably connected with the side wall of the transfer box (4) through a rotating shaft, the lock hook (52) is clamped with the lock pin (51), worm gear teeth are arranged on the edge of the lock hook (52), the worm (53) is meshed with the worm gear teeth, two bearing seats (54) are arranged on the worm (53), and the two bearing seats (54) are fixedly connected with the side wall of the transfer box (4);
the automatic transfer device is characterized in that a lower gear (55) and a lower rack (56) meshed with the lower gear (55) are arranged at the bottom end of the worm (53), the lower gear (55) is fixed with the bottom end of the worm (53), the lower rack (56) is slidably connected with the side wall of the transfer box (4), one end of the lower rack (56) is fixedly connected with a driven push plate (57), the other end of the lower rack (56) is connected with the side wall of the transfer box (4) through a return spring (58), the edge of the transfer car (33) is fixedly connected with a driving push plate (331), and the position of the driving push plate (331) corresponds to the position of the driven push plate (57);
two guide rails (41) extending to the top of the transfer box (4) are fixedly arranged on one side, close to the loading box (3), of the transfer box (4), sliding doors (42) are connected between the two guide rails (41) in a sliding mode, an upper gear (8) and an upper rack (9) meshed with the upper gear (8) are arranged on the top end of the worm (53), the upper gear (8) is fixed on the top end of the worm (53), the upper rack (9) is connected with the side wall of the transfer box (4) in a sliding mode, and limiting blocks (10) extending to the bottoms of the sliding doors (42) are fixedly arranged at the end portions of the upper rack (9);
the driving assembly (6) comprises a movable shaft (61) and a sliding rail (62), the movable shaft (61) is rotationally connected with the inner bottom wall of the transfer box (4), a driving gear (63) and a take-up pulley (64) are fixed on the movable shaft (61), a pull rope (65) is wound on the take-up pulley (64), one end of the pull rope (65) is fixedly connected with the transfer car (33), the sliding rail (62) is fixedly connected with the inner bottom wall of the transfer box (4), a driving rack (66) is slidingly connected on the sliding rail (62), the driving rack (66) is meshed with the driving gear (63), a tension spring (67) is fixedly connected with one end of the driving rack (66), and one end of the tension spring (67) is far away from the driving rack (66) and is fixedly connected with the end part of the sliding rail (62).
A limiting hole (68) is formed in the surface of the driving rack (66), a mounting sheet (69) is fixed on the sliding rail (62), an electromagnetic push rod (60) is fixedly connected to the mounting sheet (69), and the direction in which the output axial limiting hole (68) of the electromagnetic push rod (60) is located extends;
the suspension mechanism (7) comprises a reduction gearbox (71), a motor (72) is fixed at the input end of the reduction gearbox (71), two output shafts are arranged on the reduction gearbox (71), windlass (73) are arranged on the two output shafts of the reduction gearbox (71), and the two windlass (73) are respectively connected with the loading box (3) and the transfer box (4);
the winch (73) comprises a supporting frame (731), a winding drum (732) is arranged on the supporting frame (731), a lifting rope (733) is wound on the winding drum (732), the winding drum (732) is movably connected with the supporting frame (731) through a middle shaft (734), a brake (735) is arranged at one end of the middle shaft (734), and the other end of the middle shaft (734) is connected with an output shaft of the reduction gearbox (71) through an electromagnetic clutch (736).
2. The power-off protection device of a tower crane according to claim 1, wherein: the inner bottom wall of the loading box (3) and the inner bottom wall of the transferring box (4) are respectively provided with a guide rail (11), and the guide rails (11) in the loading box (3) correspond to the guide rails (11) in the transferring box (4) in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310725413.5A CN116477506B (en) | 2023-06-19 | 2023-06-19 | Power-off protection device of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310725413.5A CN116477506B (en) | 2023-06-19 | 2023-06-19 | Power-off protection device of tower crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116477506A CN116477506A (en) | 2023-07-25 |
| CN116477506B true CN116477506B (en) | 2023-09-12 |
Family
ID=87219894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310725413.5A Active CN116477506B (en) | 2023-06-19 | 2023-06-19 | Power-off protection device of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116477506B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3402824A (en) * | 1966-07-25 | 1968-09-24 | Pacific Coast Eng Co | Convertible cargo handling system |
| US4047617A (en) * | 1974-11-28 | 1977-09-13 | Hans Tax | Luffing crane with overload protection mechanism |
| JPH08175784A (en) * | 1994-12-22 | 1996-07-09 | Kawasaki Heavy Ind Ltd | Revolving motion preventive device at time of cargo swinging of container crane |
| CN1250745A (en) * | 1999-06-30 | 2000-04-19 | 西安建筑科技大学 | High-safety protecting system and method for monitoring running state of tower crane |
| JP2001253682A (en) * | 2000-03-10 | 2001-09-18 | Nkk Corp | Bulk cargo handling device and bulk cargo handling method using it |
| JP2004026326A (en) * | 2002-06-21 | 2004-01-29 | Hitachi Home & Life Solutions Inc | Brake releasing device at power failure in electric hoisting machine |
| RU2245838C2 (en) * | 2001-07-09 | 2005-02-10 | Инденбаум Анатолий Иосифович | Method of and device to control tower crane in emergency |
| CN103979420A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Power-off brake buffer device for large-scale gantry crane |
| CN108975192A (en) * | 2018-09-28 | 2018-12-11 | 中国人民解放***箭军工程大学 | A kind of double-brake electric hoist failure emergency load safe release system and method |
| CN209853623U (en) * | 2019-02-20 | 2019-12-27 | 德瑞斯博海机械设备（大连）有限公司 | Emergency buffer release device for power failure of crane |
-
2023
- 2023-06-19 CN CN202310725413.5A patent/CN116477506B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3402824A (en) * | 1966-07-25 | 1968-09-24 | Pacific Coast Eng Co | Convertible cargo handling system |
| US4047617A (en) * | 1974-11-28 | 1977-09-13 | Hans Tax | Luffing crane with overload protection mechanism |
| JPH08175784A (en) * | 1994-12-22 | 1996-07-09 | Kawasaki Heavy Ind Ltd | Revolving motion preventive device at time of cargo swinging of container crane |
| CN1250745A (en) * | 1999-06-30 | 2000-04-19 | 西安建筑科技大学 | High-safety protecting system and method for monitoring running state of tower crane |
| JP2001253682A (en) * | 2000-03-10 | 2001-09-18 | Nkk Corp | Bulk cargo handling device and bulk cargo handling method using it |
| RU2245838C2 (en) * | 2001-07-09 | 2005-02-10 | Инденбаум Анатолий Иосифович | Method of and device to control tower crane in emergency |
| JP2004026326A (en) * | 2002-06-21 | 2004-01-29 | Hitachi Home & Life Solutions Inc | Brake releasing device at power failure in electric hoisting machine |
| CN103979420A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Power-off brake buffer device for large-scale gantry crane |
| CN108975192A (en) * | 2018-09-28 | 2018-12-11 | 中国人民解放***箭军工程大学 | A kind of double-brake electric hoist failure emergency load safe release system and method |
| CN209853623U (en) * | 2019-02-20 | 2019-12-27 | 德瑞斯博海机械设备（大连）有限公司 | Emergency buffer release device for power failure of crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116477506A (en) | 2023-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101665213B (en) | Light-weight rotary hanger for containers | |
| CN110668291B (en) | Hoisting device for house construction engineering | |
| CN114590730A (en) | Heavy coaxial winch | |
| CN116477506B (en) | Power-off protection device of tower crane | |
| CN110626967B (en) | Crane with overload locking device | |
| CN216833395U (en) | Manual-electric integrated self-loading and self-unloading assault boat trailer | |
| KR100967241B1 (en) | System for lifting cargo and wing body vehicles using thereof | |
| JPH0132155B2 (en) | ||
| CN213505647U (en) | Anti-swing crane | |
| CN210620101U (en) | Hanger plate device for light wallboard | |
| CN109592563B (en) | Overhead hoist and overhead hoist equipment | |
| CN209815519U (en) | Hoisting device and hoisting equipment | |
| CN201458566U (en) | Balance mechanism of container light-duty rotary hanger | |
| CN218560877U (en) | Light carriage cargo hoisting winch mechanism | |
| CN111806506B (en) | Construction transport vechicle | |
| CN214568546U (en) | Better conveyer of fixed effect | |
| CN218702920U (en) | Translation mechanism of light carriage cargo hoisting tackle | |
| CN111775997B (en) | Anti-falling rail car for building construction | |
| CN211664588U (en) | Hoisting device for railway vehicle internal installation | |
| CN219411901U (en) | Discharging platform for building construction | |
| CN217176700U (en) | Safety elevator structure for underground coal mine | |
| CN113173523B (en) | Electric lifting mechanism | |
| CN220549934U (en) | Auxiliary device for chain block | |
| CN221370081U (en) | Emergency braking equipment for elevator cabin | |
| CN219620710U (en) | Lifting limiting device for lifting mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |