CN116239027B - Crane with obstacle avoidance early warning function - Google Patents
Crane with obstacle avoidance early warning function Download PDFInfo
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- CN116239027B CN116239027B CN202310504802.5A CN202310504802A CN116239027B CN 116239027 B CN116239027 B CN 116239027B CN 202310504802 A CN202310504802 A CN 202310504802A CN 116239027 B CN116239027 B CN 116239027B
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- copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
- B66C15/065—Arrangements or use of warning devices electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
- B66C13/30—Circuits for braking, traversing, or slewing motors
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Thermally Actuated Switches (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a crane with an obstacle avoidance early warning function, relates to the technical field of cranes, and solves the problem that overload is caused to a motor by too high current due to sudden increase of current caused by sudden starting of a heavy-duty motor. The utility model provides a hoist with keep away barrier early warning function, includes the floor, the both sides of floor upper end all are provided with a plurality of regional boards, the inside one side of regional board all is provided with three and opens the mechanism that stops outward, open outward and stop the mechanism setting and be located the centre department that is close to the floor surface outward, the lower extreme of two parallel crossbeams all is provided with a plurality of support frame posts, one of them support frame post be provided with current buffer gear in the interior. According to the invention, the direct current motor drives the threaded rod at the upper end to rotate and move upwards, so that the circuit resistance is smaller and smaller in the electrifying process, the current is slowly increased, but the current on the heavy-duty motor is suddenly increased, and overload of the motor caused by excessive current is avoided, and the service life of the motor is prolonged.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a crane with an obstacle avoidance early warning function.
Background
A crane refers to a multi-action lifting machine that vertically lifts and horizontally conveys weights within a certain range. The bridge crane is hoisting equipment for hoisting materials and is characterized in that two ends of the bridge crane are arranged on a high cement column or a metal support, the bridge crane is shaped like a bridge, and a bridge frame of the bridge crane longitudinally runs along rails paved on the overhead frames at two sides, so that the space below the bridge frame can be fully utilized for hoisting materials and is not blocked by ground equipment. The hoisting machine has the advantages of being the hoisting machine with the widest application range and the largest number;
the crane is provided with a lifting mechanism, an operating mechanism, an amplitude changing mechanism and a rotating mechanism, and a heavy-duty motor is arranged in the lifting mechanism, and a working area and a passing area are generally arranged in workshops, warehouses or material yards, when a worker walks to the working area (namely, a dangerous area) by mistake, an error warning alarm can appear, and then the heavy-duty motor is subjected to power-off treatment;
after the dangerous condition is relieved, namely after the emergency stop, the motor needs to be electrified to continue normal operation; the heavy-duty motor in the crane is suddenly powered on and started, and meanwhile, the sudden current increase is caused by the sudden start of the heavy-duty motor, so that the motor is overloaded and various components in the motor are damaged by the excessive current, and even if a protection circuit exists, the equipment is easy to fail when the instantaneous current is excessive; therefore, in order to solve the problems, a crane with an obstacle avoidance and early warning function is provided, mechanical structural protective measures are enhanced on the basis of a protective circuit, the safety of the crane is further enhanced, the obstacle avoidance and early warning function is achieved, and the follow-up equipment is further protected from restarting.
Disclosure of Invention
The invention aims to provide a crane with an obstacle avoidance early warning function, so as to solve the problems that the sudden start of a heavy-duty motor provided in the background art can cause sudden increase of current, overload can be caused to the motor due to excessive current, the service life of the motor is further shortened, and the like.
In order to achieve the above purpose, the present invention provides the following technical solutions: the crane with the obstacle avoidance early warning function is provided with a lifting mechanism, an operating mechanism, an amplitude changing mechanism and a rotating mechanism, wherein a travelling beam and two parallel beams are arranged in the operating mechanism, the crane comprises a floor, a heavy-duty motor is arranged in the lifting mechanism, a plurality of area plates are arranged on two sides of the upper end of the floor, an external starting and stopping mechanism is arranged on one side inside the area plates, the external starting and stopping mechanism is arranged in the middle of the surface close to the floor, a plurality of support frame columns are arranged at the lower ends of the two parallel beams, and a current buffer mechanism is arranged in one support frame column;
the current buffer mechanism comprises a direct current motor and a sliding resistor block, the direct current motor drives the contact copper block to linearly displace on the surface of the sliding resistor block, normally closed touch switches are arranged above and below the sliding resistor block, and a first wide U-shaped plate is arranged at a position, close to the lower part, of the external start-stop mechanism;
the external starting and stopping mechanism comprises three upper movable blocks which are transversely arranged, wherein the lower parts of the upper movable blocks are connected with lower movable copper blocks through connecting main columns, springs are connected between the bottom surfaces of the upper movable blocks and first wide U-shaped plates, electric connection short plates which are matched with the lower movable copper blocks are arranged below the first wide U-shaped plates, the electric connection short plates are positioned right below the lower movable copper blocks, electric connection long plates are arranged above the electric connection short plates, the electric connection short plates and the electric connection long plates are arranged in a staggered mode, and the lower movable copper blocks are in contact with the electric connection long plates;
a movable copper plate is arranged in the middle of the upper end surface of the lower movable copper block, a fixed copper plate is arranged at the bottom surface of the first wide U-shaped plate and corresponds to the movable copper plate, and the fixed copper plate is attached to the movable copper plate;
the heavy-duty motor, the fixed copper plate, the upper end of the sliding resistance block, the contact copper block and an external alternating current power supply are connected in series to form a first closed loop, a second closed loop is formed among the electricity connection long plate, the normally closed touch switch on the connecting plate, the normally closed touch switch on the fixed plate, the direct current motor and the direct current power supply, a third closed loop is formed among the electricity connection short plate, the normally closed touch switch on the connecting plate, the normally closed touch switch on the fixed plate, the direct current motor and the direct current power supply, and the current directions of the wiring on the second closed loop and the third closed loop are opposite.
Preferably, an output shaft at the upper end of the direct current motor is connected with a threaded rod through a coupling, a movable plate is rotatably matched on the upper side of the threaded rod, a guide rod is arranged on one side of the threaded rod, a contact copper block is welded at one end of the movable plate, and a sliding resistance block is arranged on the other side of the threaded rod; the middle of fly leaf department is provided with the screw hole, screw hole rotation cooperation on threaded rod and the fly leaf, one side of fly leaf runs through and is provided with the mating hole, the vertical clearance fit in mating hole on guide arm and the fly leaf, the upper end welding of guide arm has the connecting plate, the lower extreme welding of guide arm has the fixed plate, all be fixed with normally closed touch switch on the terminal surface that connecting plate and fixed plate are relative.
Preferably, the middle welding of last movable block lower extreme has the connection principal post, be provided with the spring around the connection principal post, be provided with the stable piece around the spring interlude, the vertical through-hole that is provided with in both sides of stable piece, movable fit has the cooperation movable column in the through-hole of stable piece both sides, the lower extreme welding of connecting the principal post has down movable copper piece, the lower extreme both sides welding of stable piece has the supporting shoe.
Preferably, the lower end face of the upper movable block is connected with the first wide U-shaped plate through a spring, the stabilizing block is supported by two supporting blocks and is positioned at the upper end of the first wide U-shaped plate, three movable through holes are vertically arranged on the end face of the first wide U-shaped plate and positioned right below the stabilizing block, one movable through hole is vertically movable with the connecting main column, and the other two movable through holes are vertically movable with the matching movable column.
Preferably, one side of the first wide U-shaped plate is provided with a fixed copper plate in a fit manner, the fixed copper plate is matched with the front end of the external starting and stopping mechanism, the fixed copper plate is matched with the movable copper plate in a fit manner, and an insulating pad is arranged between the lower movable copper block and the movable copper plate.
Preferably, the threaded rod is twice as long as the slide block.
Preferably, when the lower movable copper block in the outer starting and stopping mechanism is not displaced, the first closed loop and the second closed loop are electrified and the heavy-duty motor is operated, the rotating shaft on the direct current motor drives the threaded rod to rotate positively and drives the movable plate and the contact copper block to move upwards on one side of the surface of the sliding resistor block, the movable plate moves to the lower end of the connecting plate to contact with the normally closed touch switch, the length of the threaded rod is twice the length of the sliding resistor block, the change of the resistance value of the sliding resistor block changes the current in the first closed loop and controls the rotating speed of the heavy-duty motor, after the lower movable copper block in the outer starting and stopping mechanism is displaced, the first closed loop and the second closed loop are powered off and the third loop are powered on, the wiring direction of the wiring on the second closed loop is opposite to the wiring direction of the third closed loop, and the rotating shaft on the direct current motor drives the threaded rod to rotate positively and drive the movable plate and the contact copper block to move downwards.
Preferably, the lower movable copper block is located at the lower end of the first wide U-shaped plate, a groove is fixedly formed in the upper end of the electric connection short plate, the length of the groove is identical to that of the lower movable copper block, and the lower movable copper block is located right above the groove on the electric connection short plate.
Preferably, three inverted U-shaped grooves are arranged on one side of the electricity connection long plate, the lower movable copper block is matched and positioned in the inverted U-shaped grooves, and a plurality of anti-skid patterns are arranged on the surface of the upper end of the upper movable block.
Compared with the prior art, the invention has the beneficial effects that:
when the upper end of the external start-stop mechanism is not stepped on, the upper movable block and the whole connecting main column are maintained at the upper side through the stretching elasticity of the spring, wherein the electric connection long plate is of a sectional design, the inverted U-shaped groove inner wall at one side of the electric connection long plate is made of insulating materials, the lower movable copper block at the lower end of the connecting main column is matched in the inverted U-shaped groove on the electric connection long plate, so that the whole electric connection long plate is in a conductive state, an output shaft on the direct current motor can drive the whole threaded rod to rotate upwards and move, rotary threads on the threaded rod and threaded holes on the movable plate are in rotary movable fit, the movable plate can translate upwards and move, one end of the upper surface of the movable plate is not provided with threads, the contact copper block welded at one side of the movable plate is enabled to be in a fitting mode to the top end of the sliding resistance block, one end of the sliding resistance block is connected with a power interface on the heavy load motor through wires, one end of the contact block is in a conductive state, the contact copper block is connected with the external power interface through wires, and the contact copper block is in a direct contact state with the heavy load motor, and the contact resistance is enabled to be connected with the heavy load motor through the copper block;
if a worker carelessly enters and steps on an upper movable block on the outer starting and stopping mechanism, wherein a movable copper plate on a lower movable copper block moves downwards under the drive of the lower movable copper block, the contact fit between the movable copper plate and a fixed copper plate is released, so that a heavy-duty motor, a fixed copper plate, the upper end of a sliding resistance block, a contact copper block and an external alternating current power supply which are connected in series in a first closed loop are powered off, the heavy-duty motor is suddenly stopped, then the upper movable block moves downwards and extrudes the elasticity of a spring, and meanwhile, the lower movable copper block connected with the lower end of a main column can be matched and moved into a groove on an electric short plate, so that the lower movable copper block is matched with the electric short plate, the first closed loop and the second closed loop are powered off, the wiring direction of the second closed loop is opposite, and a rotating shaft on the direct current motor drives a threaded rod to rotate reversely and drives the movable plate and the contact copper block to move downwards;
when a worker leaves from the upper movable block, the spring can drive the integral upper movable block to restore to the original position upwards, so that the movable copper plate and the fixed copper plate are newly attached under the drive of the upper movable block, the connecting main column and the lower movable copper block, however, as the length of the sliding resistance block is twice as long as the length of the threaded rod, the contact copper block on the movable plate still does not contact with the surface of the sliding resistance block, and the first loop is still in an open circuit state at the moment, and the arrangement ensures that the power on of the first loop has buffer time, so that the worker has enough time to withdraw from a dangerous area;
finally, the contact copper block on the movable plate is matched with one side of the sliding resistor block in a contact way under the drive of the threaded rod, the first closed loop and the second closed loop are electrified and the heavy-duty motor operates, the resistance between the sliding resistor block and the contact copper block can be gradually reduced from large to small in the process that the surface of one side of the sliding resistor block moves upwards, the current passing through the first closed loop can be gradually increased, the abrupt increase of the current during abrupt starting of the heavy-duty motor is avoided in the process, overload of the motor caused by the abrupt too high current is avoided, various components in the motor are prevented from being damaged, and the service life of the motor is further prolonged.
Drawings
FIG. 1 is a schematic perspective view of the whole structure of the present invention;
FIG. 2 is an enlarged view of the internal space of the support column of the present invention;
FIG. 3 is an enlarged view of the perspective structure of FIG. 2A in accordance with the present invention;
FIG. 4 is an enlarged view of the internal space of the external start-stop mechanism according to the present invention;
FIG. 5 is an enlarged view of the perspective structure of the present invention at B in FIG. 4;
FIG. 6 is another side perspective view of the structure of FIG. 4 in accordance with the present invention;
fig. 7 is a simplified schematic diagram of a wiring circuit according to the present invention.
In the figure: 1. a floor; 2. a heavy-duty motor; 3. a support frame column; 4. an external start-stop mechanism; 401. an upper movable block; 402. a lower movable copper block; 403. anti-skid lines; 404. matching with a movable column; 405. a stabilizing block; 406. a support block; 407. a spring; 408. connecting a main column; 5. a zone plate; 6. a DC motor; 7. a guide rod; 8. a threaded rod; 9. a fixing plate; 10. a sliding resistance block; 11. a movable plate; 12. a connecting plate; 13. a threaded hole; 14. a contact copper block; 15. a first wide U-shaped plate; 16. a second wide U-shaped plate; 17. an electric short plate is connected; 18. an electric connection long plate; 19. a connecting folded plate; 20. fixing a copper plate; 21. a movable copper plate.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments.
Referring to fig. 1 to 7, an embodiment of the present invention provides: the crane with the obstacle avoidance early warning function is provided with a lifting mechanism, an operating mechanism, an amplitude changing mechanism and a rotating mechanism, wherein a heavy-duty motor 2 is arranged in the lifting mechanism, the crane can operate on the floor 1 by arranging the crane at the upper end of the floor 1, an area plate 5 is arranged between a plurality of support frame posts 3 of the floor 1, the area plate 5 is a main working area which is a dangerous area, a personnel channel is arranged in the middle of the floor 1, the space between the channel and the area plate 5 is one meter, three outward starting stop mechanisms 4 are arranged inside one side of the area plate 5, the upper end of the outward starting stop mechanism 4 which is on one side of the area plate 5 is required to be stepped on by a step before a person can walk into the area plate 5, the current buffer mechanism comprises a direct current motor 6, an output shaft at the upper end of the direct current motor 6 is provided with a threaded rod 8 through a coupling, the upper side of the threaded rod 8 is rotatably matched with a movable plate 11, one side of the threaded rod 8 is provided with a guide rod 7, one end of the movable plate 11 is welded with a contact threaded rod 14, and the other side of the movable plate 11 is provided with a sliding resistance block 10;
the current buffer mechanism comprises a direct current motor 6 and a sliding resistor block 10, wherein the direct current motor 6 drives a contact copper block 14 to linearly displace on the surface of the sliding resistor block 10, normally closed touch switches are arranged above and below the sliding resistor block 10, a first wide U-shaped plate 15 is arranged at the position, close to the lower side, of an external starting stop mechanism 4, the external starting stop mechanism 4 comprises three upper movable blocks 401 which are transversely arranged, a lower movable copper block 402 is connected to the lower side of the upper movable block 401 through 408, 407 is connected between the bottom surface of the upper movable block 401 and the first wide U-shaped plate 15, three electric connection short plates 17 are arranged below the first wide U-shaped plate 15, the electric connection short plates 17 are arranged right below the lower movable copper block 402, electric connection long plates 18 are arranged above the electric connection short plates 17, the electric connection short plates 17 and the electric connection long plates 18 are arranged in a staggered mode, movable copper plates 21 are arranged at the middle positions of the upper end faces of the lower movable copper plates 402, a fixed copper plate 20 and a movable copper plate 21 are arranged at the positions of the first wide U-shaped plate 15 corresponding to the movable copper plates 21, and the fixed copper plates 20 are fixedly attached to the movable copper plates 21.
Through arranging a threaded hole 13 in the middle of the movable plate 11, the threaded rod 8 is in rotary fit with the threaded hole 13 on the movable plate 11, one side of the movable plate 11 is provided with a matched hole in a penetrating way, the matched holes on the guide rod 7 and the movable plate 11 are vertically and movably matched, the upper end of the guide rod 7 is welded with a connecting plate 12, the lower end of the guide rod 7 is welded with a fixed plate 9, and normally closed touch switches are fixedly arranged on the opposite end surfaces of the connecting plate 12 and the fixed plate 9;
the outer starting and stopping mechanism 4 is provided with an upper movable block 401, a connecting main column 408 is welded at the middle of the lower end of the upper movable block 401, springs 407 are arranged around the connecting main column 408, stabilizing blocks 405 are arranged around the middle section of the springs 407, through holes are vertically formed in the two sides of the stabilizing blocks 405 in a penetrating mode, a matched movable column 404 is movably matched in the through holes on the two sides of the stabilizing blocks 405, a lower movable copper block 402 is welded at the lower end of the connecting main column 408, and supporting blocks 406 are welded on the two sides of the lower end of the stabilizing blocks 405;
a connecting folded plate 19 is connected between the upper ends of the two adjacent external starting and stopping mechanisms 4, a first wide U-shaped plate 15 is arranged on the lower side of the external starting and stopping mechanism 4, a second wide U-shaped plate 16 is connected to the lower end of the first wide U-shaped plate 15, three electric short connecting plates 17 are arranged and welded at the lower end of the second wide U-shaped plate 16, and three electric long connecting plates 18 are transversely and uniformly arranged and welded at the upper end of the second wide U-shaped plate 16;
a fixed copper plate 20 is arranged on one side of the first wide U-shaped plate 15 in a fit way, the fixed copper plate 20 is matched and positioned at the front end of the external starting and stopping mechanism 4, the fixed copper plate 20 is matched and matched with a movable copper plate 21, an insulating pad is arranged between a lower movable copper block 402 and the movable copper plate 21, a third closed loop is formed among the electric short plate 17, a normally closed touch switch on the connecting plate 12, a normally closed touch switch on the fixed plate 9, a direct current motor and a direct current power supply, and the wiring direction of the second closed loop is opposite to that of the third closed loop;
when the lower movable copper block 402 in the outer starting and stopping mechanism 4 is not displaced when the upper end of the outer starting and stopping mechanism 4 is not stepped on, the heavy-duty motor 2, the fixed copper plate 20, the upper end of the sliding resistance block 10, the contact copper block 14 and an external alternating current power supply are connected in series to form a first closed loop, wherein a second closed loop is formed among the electric long plate 18, a normally closed touch switch on the connecting plate 12, a normally closed touch switch on the fixed plate 9, a direct current motor and the direct current power supply, the direct current motor 6 is started and a rotating shaft at the proper upper end drives the threaded rod 8 to perform forward rotation, the threaded rod 8 drives the movable plate 11 and the contact copper block 14 at the upper end to move upwards, the movable plate 11 moves to the lower end of the connecting plate 12 to contact the normally closed touch switch, the normally closed touch switch can control the second closed loop to be powered off after touching, and the direct current motor 6 stops running at the moment;
if a worker carelessly enters and steps on the upper movable block 401 on the external starting and stopping mechanism 4, wherein the movable copper plate 21 on the lower movable copper block 402 moves downwards under the drive of the lower movable copper block 402, the contact cooperation between the movable copper plate 21 and the fixed copper plate 20 is released, so that the heavy-duty motor 2, the fixed copper plate 20, the upper end of the sliding resistance block 10, the contact copper block 14 and an external alternating current power supply which are connected in series in a first closed loop are powered off, the heavy-duty motor 2 is suddenly stopped, the upper movable block 401 moves downwards and extrudes the elasticity of the spring 407, the lower movable copper block 402 connected with the lower end of the main column 408 can move into a groove on the electric short plate 17 in a matched manner, the lower movable copper block 402 and the electric short plate 17 are in a matched manner, the first closed loop and the second closed loop are powered off, the connection direction of the threaded rod on the second closed loop and the connection direction of the third closed loop are opposite, and the rotating shaft on the direct current motor 6 drives the rotating shaft 8 to rotate reversely and drives the movable copper plate 11 and the contact copper plate 14 to move downwards;
when a worker leaves from the upper movable block 401, the spring 407 can drive the integral upper movable block 401 to restore to the original position upwards, so that the movable copper plate 21 and the fixed copper plate 20 are newly attached under the drive of the upper movable block 401, the connecting main column 408 and the lower movable copper block 402, however, as the length of the threaded rod 8 is twice as long as the sliding resistor block 10, the contact copper block 14 on the movable plate 11 still cannot be contacted with the surface of the sliding resistor block 10, and then the first circuit is still in an open circuit state, and the arrangement ensures that the power on of the first circuit has buffer time, so that the worker has enough time to withdraw from a dangerous area;
finally, the contact copper block 14 on the movable plate 11 is in contact fit with one side of the sliding resistor block 10 under the drive of the threaded rod 8, so that the first closed loop and the second closed loop are electrified and the heavy-duty motor 2 operates, the resistance between the sliding resistor block 10 and the contact copper block 14 can be gradually reduced from large to small in the process that the surface of one side of the sliding resistor block 10 moves upwards, the current passing through the first closed loop can be gradually increased, the process avoids the abrupt increase of the current during the abrupt starting of the heavy-duty motor, the overload of the motor caused by the abrupt overhigh current is avoided, various components in the motor are prevented from being damaged, and the service life of the motor is further prolonged.
Further, screw hole 13 is provided in the middle of fly leaf 11, screw hole 13 rotary fit on threaded rod 8 and fly leaf 11, one side of fly leaf 11 runs through and is provided with the mating hole, the vertical clearance fit in mating hole on guide arm 7 and the fly leaf 11, connecting plate 12 has been welded to the upper end of guide arm 7, fixed plate 9 has been welded to the lower extreme of guide arm 7, the connection end plate has all been welded at the upper and lower both ends of sliding resistor piece 10, welded connection between the connection end plate on the sliding resistor piece 10 and the inboard end of support frame post 3, connecting plate 12 and fixed plate 9 wherein are fixed respectively at the upper and lower both ends of guide arm 7, then have fixed connection's effect to holistic guide arm 7, and guide arm 7 can have the guide effect to fly leaf 11 for fly leaf 11 has stability at threaded rod 8 surface activity from top to bottom.
Further, a connecting folded plate 19 is connected and arranged between the upper ends of the two adjacent outer starting and stopping mechanisms 4, a first wide U-shaped plate 15 is arranged on the lower side of the outer starting and stopping mechanism 4, a second wide U-shaped plate 16 is connected to the lower end of the first wide U-shaped plate 15, the first wide U-shaped plate 15 and the second wide U-shaped plate 16 are all arranged to be of a wide U-shaped structure, three electric short connecting plates 17 are welded on the transverse long plates of the second wide U-shaped plate 16 in an arrayed mode, and electric long connecting plates 18 are welded between the two sides of the vertical plates of the second wide U-shaped plate 16.
Wherein through setting up parts such as movable block 401 in opening the shut down mechanism outward 4, the centre department welding of upper movable block 401 lower extreme has connection principal post 408, be provided with spring 407 around connecting principal post 408, be provided with stabilizing block 405 around the interlude of spring 407, stabilizing block 405's both sides vertically run through and are provided with the through-hole, the through-hole of stabilizing block 405 both sides is interior movable fit has cooperation movable post 404, the lower extreme welding of connecting principal post 408 has lower movable copper block 402, the lower extreme both sides welding of stabilizing block 405 has supporting shoe 406, wherein be provided with three inverted U type groove in the one side range of connecing electric long plate 18, lower movable copper block 402 cooperation is located inverted U type inslot, the surface of upper movable block 401 upper end is provided with a plurality of anti-skidding lines 403, and anti-skidding line 403 makes holistic upper movable block 401 have skid resistant function.
The lower end face of the upper movable block 401 is connected with the first wide U-shaped plate 15 through springs 407, the stabilizing block 405 is supported by two supporting blocks 406 and is located at the upper end of the first wide U-shaped plate 15, three movable through holes are vertically formed in the end face of the first wide U-shaped plate 15 and located right below the stabilizing block 405, one movable through hole is vertically movable with the connecting main column 408, the other two movable through holes are vertically movable with the connecting main column 404, the lower movable copper block 402 is located at the lower end of the first wide U-shaped plate 15, a groove is fixedly formed in the upper end of the electric short plate 17, the length of the groove is identical to that of the lower movable copper block 402, the lower movable copper block 402 is located right above the groove on the electric short plate 17, the stability of the vertical movement of the upper movable block 401 is improved through the arrangement of the two movable supporting columns 404, and the stability of the vertical movement of the connecting main column 408 is further improved through the stabilizing block 405.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. Crane with obstacle avoidance early warning function is provided with hoisting mechanism, operating mechanism, luffing mechanism, rotation mechanism in the crane, be provided with driving crossbeam and two parallel crossbeams in the operating mechanism, including floor (1), its characterized in that: the lifting mechanism is internally provided with a heavy-duty motor (2), two sides of the upper end of the floor (1) are respectively provided with a plurality of area plates (5), one side of the interior of each area plate (5) is respectively provided with an external starting and stopping mechanism (4), the external starting and stopping mechanism (4) is arranged at the middle position close to the surface of the floor (1), the lower ends of the two parallel cross beams are respectively provided with a plurality of support frame columns (3), and one support frame column (3) is internally provided with a current buffer mechanism;
the current buffer mechanism comprises a direct current motor (6) and a sliding resistance block (10), wherein the direct current motor (6) drives a contact copper block (14) to linearly displace on the surface of the sliding resistance block (10), normally closed touch switches are arranged above and below the sliding resistance block (10), and a first wide U-shaped plate (15) is arranged at a position, close to the lower part, of the external start-stop mechanism (4);
the outer start-stop mechanism (4) comprises three upper movable blocks (401) which are transversely arranged, a lower movable copper block (402) is connected below the upper movable blocks (401) through a connecting main column (408), a spring (407) is connected between the bottom surface of the upper movable blocks (401) and a first wide U-shaped plate (15), an electric connection short plate (17) which is matched with the lower movable copper block (402) is arranged below the first wide U-shaped plate (15), the electric connection short plate (17) is positioned under the lower movable copper block (402), electric connection long plates (18) are arranged above the electric connection short plates (17), the electric connection short plates (17) and the electric connection long plates (18) are staggered, and the lower movable copper blocks (402) are in contact with the electric connection long plates (18);
a movable copper plate (21) is arranged in the middle of the upper end surface of the lower movable copper block (402), a fixed copper plate (20) is arranged at the bottom surface of the first wide U-shaped plate (15) corresponding to the movable copper plate (21), and the fixed copper plate (20) is attached to the movable copper plate (21);
the heavy-duty motor (2), the fixed copper plate (20), the upper end of the sliding resistor block (10), the contact copper block (14) and an external alternating current power supply are connected in series to form a first closed loop, a normally closed touch switch on the electricity connection long plate (18), the connecting plate (12), a normally closed touch switch on the fixed plate (9), a second closed loop formed among the direct current motor (6) and the direct current power supply, a third closed loop formed among the electricity connection short plate (17), the normally closed touch switch on the connecting plate (12), the normally closed touch switch on the fixed plate (9), the direct current motor and the direct current power supply, and the wiring on the second closed loop and the current direction of the third closed loop are opposite;
an output shaft at the upper end of the direct current motor (6) is connected with a threaded rod (8) through a coupling, a movable plate (11) is rotatably matched on the upper side of the threaded rod (8), a guide rod (7) is arranged on one side of the threaded rod (8), a contact copper block (14) is welded at one end of the movable plate (11), and a sliding resistance block (10) is arranged on the other side of the threaded rod (8); the middle of the movable plate (11) is provided with a threaded hole (13), the threaded rod (8) is in rotary fit with the threaded hole (13) on the movable plate (11), one side of the movable plate (11) is provided with a matched hole in a penetrating mode, the matched holes on the guide rod (7) and the movable plate (11) are in vertical movable fit, the upper end of the guide rod (7) is welded with a connecting plate (12), the lower end of the guide rod (7) is welded with a fixed plate (9), and normally closed touch switches are fixedly arranged on the opposite end faces of the connecting plate (12) and the fixed plate (9);
when the lower movable copper block (402) in the outer starting and stopping mechanism (4) is not displaced, the first closed loop and the second closed loop are electrified and the heavy-duty motor (2) operates, the rotating shaft on the direct-current motor (6) drives the threaded rod (8) to rotate positively and drives the movable plate (11) and the contact copper block (14) to move upwards on one side of the surface of the sliding resistor block (10), the movable plate (11) moves to the lower end of the connecting plate (12) to be in contact with the normally closed touch switch, the length of the threaded rod (8) is twice the length of the sliding resistor block (10), the change of the resistance value of the sliding resistor block (10) changes the current in the first closed loop and controls the rotating speed of the heavy-duty motor (2), after the lower movable copper block (402) in the outer starting and stopping mechanism (4) is displaced, the first closed loop and the second closed loop are powered off, the wiring on the second closed loop is opposite to the wiring direction of the third closed loop, and the rotating shaft on the direct-current motor (6) drives the threaded rod (8) to rotate positively and drive the movable copper block (11) to move downwards.
2. The crane with obstacle avoidance early warning function according to claim 1, characterized in that: the middle part welding of going up movable block (401) lower extreme has connection principal post (408), be provided with spring (407) around connection principal post (408), be provided with stabilization piece (405) around spring (407) interlude, the vertical through-hole that is provided with in both sides of stabilization piece (405), movable fit has cooperation movable post (404) in the through-hole of stabilization piece (405) both sides, the lower extreme welding of connection principal post (408) has lower movable copper piece (402), the lower extreme both sides welding of stabilization piece (405) has supporting shoe (406).
3. The crane with obstacle avoidance early warning function according to claim 2, characterized in that: the lower end face of the upper movable block (401) is connected with the first wide U-shaped plate (15) through a spring (407), the stabilizing block (405) is supported to be located at the upper end of the first wide U-shaped plate (15) through two supporting blocks (406), three movable through holes are vertically formed in the end face of the first wide U-shaped plate (15) right below the stabilizing block (405), one movable through hole and a connecting main column (408) are vertically movable, and the other two movable through holes and the matching movable column (404) are vertically movable.
4. The crane with obstacle avoidance early warning function according to claim 1, characterized in that: one side of the first wide U-shaped plate (15) is provided with a fixed copper plate (20) in a fit mode, the fixed copper plate (20) is matched with the front end of the external starting and stopping mechanism (4), the fixed copper plate (20) is matched with the movable copper plate (21) in a fit mode, and an insulating pad is arranged between the lower movable copper block (402) and the movable copper plate (21).
5. The crane with obstacle avoidance early warning function according to claim 1, characterized in that: the length of the threaded rod (8) is twice the length of the sliding resistance block (10).
6. The crane with obstacle avoidance early warning function according to claim 1, characterized in that: the lower movable copper block (402) is located at the lower end of the first wide U-shaped plate (15), a groove is fixedly formed in the upper end of the electric short plate (17), the length of the groove is identical to that of the lower movable copper block (402), and the lower movable copper block (402) is located right above the upper groove of the electric short plate (17).
7. The crane with obstacle avoidance early warning function according to claim 1, characterized in that: three inverted U-shaped grooves are arranged on one side of the electricity connection long plate (18), the lower movable copper block (402) is matched and located in the inverted U-shaped grooves, and a plurality of anti-skidding patterns (403) are formed in the surface of the upper end of the upper movable block (401).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310504802.5A CN116239027B (en) | 2023-05-08 | 2023-05-08 | Crane with obstacle avoidance early warning function |
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| CN202310504802.5A CN116239027B (en) | 2023-05-08 | 2023-05-08 | Crane with obstacle avoidance early warning function |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR993953A (en) * | 1944-11-27 | 1951-11-09 | Cable conveyor lifting device with mechanical and electrical remote controls | |
| CN112775532A (en) * | 2020-12-28 | 2021-05-11 | 云南经济管理学院 | Steel plate stamping and welding equipment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2123065C (en) * | 1994-02-16 | 1998-09-15 | Curt J. Waedekin | Lifting apparatus including overload sensing device |
| JP4018552B2 (en) * | 2003-01-21 | 2007-12-05 | 不二サッシ株式会社 | shutter |
| TWM553893U (en) * | 2017-09-14 | 2018-01-01 | Comeup Ind Inc | Over-current (overload) safety device for power winch |
| CN110294428B (en) * | 2019-07-04 | 2021-05-07 | 江苏徐工工程机械研究院有限公司 | Closed rotation control system and crane |
| CN110614285A (en) * | 2019-09-29 | 2019-12-27 | 吉林大学 | High-energy pulse current auxiliary forward extrusion processing device and method |
| CN215439389U (en) * | 2020-12-10 | 2022-01-07 | 中核内蒙古矿业有限公司 | Automatic piston well washing device for underground leaching mine |
| CN114754755B (en) * | 2022-06-15 | 2022-09-16 | 中国船舶重工集团公司第七0七研究所 | Vacuum exhaust packaging device and method for quartz hemispherical resonator gyroscope |
| CN116014966A (en) * | 2023-02-02 | 2023-04-25 | 王磊 | Grouting electromechanical equipment for road and bridge engineering and working method |
-
2023
- 2023-05-08 CN CN202310504802.5A patent/CN116239027B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR993953A (en) * | 1944-11-27 | 1951-11-09 | Cable conveyor lifting device with mechanical and electrical remote controls | |
| CN112775532A (en) * | 2020-12-28 | 2021-05-11 | 云南经济管理学院 | Steel plate stamping and welding equipment |
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| CN116239027A (en) | 2023-06-09 |
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