CN116425062A - Over-tilting early warning device of tower crane - Google Patents
Over-tilting early warning device of tower crane Download PDFInfo
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- CN116425062A CN116425062A CN202310682788.8A CN202310682788A CN116425062A CN 116425062 A CN116425062 A CN 116425062A CN 202310682788 A CN202310682788 A CN 202310682788A CN 116425062 A CN116425062 A CN 116425062A
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- tower
- tower crane
- rack
- tower body
- lifting hook
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- 230000000670 limiting effect Effects 0.000 claims abstract description 42
- 230000003139 buffering effect Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 51
- 238000001514 detection method Methods 0.000 claims description 14
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000000452 restraining effect Effects 0.000 abstract description 2
- 239000010720 hydraulic oil Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- 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
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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
- 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
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
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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
- 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
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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
- 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
- B66C23/62—Constructional features or details
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention relates to the technical field of tower cranes, and discloses an over-tilting early warning device of a tower crane. The deflection movement of the tower body above the tower body is realized by utilizing the jacking piece to drive the piston rod to move downwards when the tower body is overturned, so that the movement of the piston rod is transmitted to the front of an operator for displaying, the operator is subjected to the overturned early warning of the tower crane, meanwhile, the control of the second spring is relieved by the electric control telescopic limiting piece, the supporting rod is driven to move upwards by the reset force of the second spring, the supporting rod on the tower body below is used for providing the restraining force opposite to the deflection movement to restrain and buffer the overturned tower crane, the buffering time before the dumping of the tower crane is effectively prolonged, the usable time for the evacuation of the operator is prolonged, and the use safety of the tower crane is improved.
Description
Technical Field
The invention relates to the technical field of tower cranes, in particular to an over-tilting early warning device of a tower crane.
Background
Tower crane is called tower crane for short, also called tower crane, originated from western europe. And the movable arm is arranged on the rotary crane at the upper part of the high-rise tower body. The working space is large, and the device is mainly used for vertical and horizontal conveying of materials and installation of building components in house building construction. The device consists of a metal structure, a working mechanism and an electrical system. The metal structure comprises a tower body, a movable arm, a base and the like. The working mechanism comprises four parts of lifting, amplitude changing, rotation and walking. The electrical system comprises a motor, a controller, a power distribution cabinet, a connecting line, a signal and lighting device and the like. In the action of the tower crane, the tower crane is easily blown under the condition of high wind in the air, and the tower crane is easy to incline excessively, so that the tower crane needs to be warned to ensure the safety of operators.
In the existing tower crane early warning device, like the Chinese patent CN211846943U, when the weather condition is severe or the tower crane is abnormal, the sensing module in the monitoring device can immediately find problems and send data to the display screen arranged at the bottom of the cockpit or the tower body for data display through the controller, so that workers can effectively predict, evaluate and judge the danger coefficient, and safety accidents are prevented; the inclination angle sensor is arranged in the sensing module and can be used for measuring the change amount of the inclination angle of the tower body, and the data can be used for judging whether the inclination condition exists in the tower body or not; the vibration sensor is arranged, so that the vibration condition of the tower body can be monitored, and whether the tower body is abnormal or not can be judged according to the data; the wind speed sensor is arranged, so that the wind speed condition of the high altitude at the upper part of the tower body can be monitored, and the data can judge whether a monitored time period is suitable for high altitude operation. The risk of the tower crane can be evaluated by the tower crane staff and the security personnel according to the data, and the tower crane security early warning device has a certain security early warning function.
But there are also the following problems: when a worker works on the tower crane, the early warning device generates early warning and alarming, a certain time is required for the evacuation of the worker, and the more serious degree of the over-tilting of the tower crane can not be reserved for the enough evacuation time of the worker, so the early warning is not perfect enough.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the over-tilting early warning device of the tower crane, which has the advantages of effectively early warning when the tower crane is over-tilted, generating resistance to the over-tilting of the tower crane so as to strive for more evacuation time for operators, and the like, and solves the problems that when the early warning device generates early warning alarm when the operators work on the tower crane, the evacuation of the operators needs a certain time, and the over-tilting degree of the tower crane is serious so that the sufficient evacuation time of the operators can not be reserved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the tower crane over-tilting early warning device comprises a foundation, a tower crane mechanism arranged on the foundation, a detection mechanism arranged on the tower crane mechanism and a buffer protection mechanism arranged on the tower crane mechanism, wherein the tower crane mechanism comprises a plurality of tower bodies which are connected end to end in sequence, and the tower bodies are fixedly arranged on the foundation;
the detection mechanism comprises a piston rod and a jacking piece, wherein the piston rods are arranged on the tower body, the jacking piece is fixedly arranged at the bottom of the tower body, the piston rods on the upper and lower adjacent tower bodies are propped against the jacking piece, and the jacking piece is positioned above the piston rods;
the buffering protection mechanism comprises a top block, a supporting rod, second springs and electric control telescopic limiting pieces, wherein the top block is fixedly installed at four corners of the bottom of each tower body, the supporting rod is arranged at four corners of the top of each tower body, the top blocks on the tower bodies which are adjacent up and down are propped against the supporting rod, the top blocks are located above the supporting rod, the second springs are arranged on the tower bodies, the electric control telescopic limiting pieces are arranged on the tower bodies, the second springs are in an initial state and have reset force, the electric control telescopic limiting pieces control the release of the reset force of the second springs, and the reset force of the second springs drives the supporting rod to move towards the top blocks.
Preferably, the tower crane mechanism further comprises a tower arm, the tower arm is in running fit with the tower body at the top end, a lifting hook is arranged on the tower arm, a control room is arranged on the tower arm, and the control room controls the lifting hook to move on the tower arm to carry out lifting operation.
Preferably, the detection mechanism further comprises a containing rod, the containing rod is fixedly arranged on the tower body, the detector is fixedly arranged at the bottom of the containing rod, the detection end of the detector is communicated with the inside of the containing rod, the detector is sealed with the containing rod, the upper part of the containing rod is provided with a manual communication valve, and the manual communication valve is used for controlling the vertical communication in the containing rod to open and close.
Preferably, the top of the tower body is fixedly provided with a rail frame, the rail frame is opposite to the accommodating rod, the rail frame is located above the accommodating rod, the rail frame is provided with the piston rod in a sliding fit mode, the bottom end of the piston rod penetrates through the accommodating rod, the piston rod is sealed with the accommodating rod, the top end of the rail frame is provided with a first spring, the first spring is sleeved on the piston rod, one end of the first spring is connected with the rail frame, and the other end of the first spring is connected with the piston rod.
Preferably, the buffer protection mechanism further comprises a limiting ring, each limiting ring is fixedly installed at four corners of the top of the tower body, the supporting rods are in sliding fit with the limiting rings, first racks are fixedly installed at the bottom ends of the supporting rods, gears are in running fit with the four corners of the top of the tower body, and the gears are meshed with the first racks.
Preferably, every equal fixed mounting in tower body top four corners department has the slide rail, equal sliding fit has the second rack on the slide rail, the second rack all with the gear meshes mutually, equal fixed mounting has the link on the second rack, equal fixed mounting has the locating rack on the tower body, the one end of link with locating rack sliding fit, all be provided with on the locating rack the second spring, the second spring is located the top of link, the one end of second spring with the locating rack links to each other, the other end of second spring with the link links to each other, all be provided with on the locating rack automatically controlled flexible locating part, automatically controlled flexible locating part's spacing projecting rod runs through the locating rack, automatically controlled flexible locating part is right the link is in the slip on the locating rack is restricted.
Preferably, the lifting hook is further provided with a locking mechanism, the locking mechanism limits the hung goods to the lifting hook when the tower crane is overturned, the locking mechanism comprises a rotating cylinder, the rotating cylinder is fixedly installed on the lifting hook and penetrates through the lifting hook, a folding arm is fixedly installed on the shaft of the rotating cylinder and is matched with the outer wall of the hook of the lifting hook, and the folding arm is enabled to be completely attached to the hook of the lifting hook when rotating to the hook of the lifting hook.
Preferably, a locking ring is fixedly installed on a hook of the lifting hook, an open notch is formed in the bottom end of the locking ring, an opening and closing piece is matched with the open notch of the locking ring in a rotating mode, the opening and closing piece cannot rotate towards the outer ring of the locking ring, a locking piece is fixedly installed on the folding arm, and when the folding arm is attached to the hook of the lifting hook, the locking piece is limited in the locking ring.
Compared with the prior art, the invention provides the over-tilting early warning device of the tower crane, which has the following beneficial effects:
1. this tower crane leans over early warning device utilizes top moving part drive piston rod to move down through the deflection removal of the tower body of top when leaning over for the removal of piston rod produces signal transmission and shows before to operating personnel, so carry out the early warning of leaning over of tower crane to operating personnel, automatically controlled flexible locating part removes the control to the second spring simultaneously, make the restoring force drive butt pole of second spring upwards move, thereby provide the restriction buffering to the tower crane by the butt pole on the tower body of below with the restriction force that deflects and remove opposite, buffer time before the tower crane emptys has been increased effectively, the usable time that the staff evacuated has been prolonged, the security of tower crane use is improved.
2. According to the tower crane tilting early warning device, hydraulic oil is filled in the lower portion inside the containing rod, so that the volume inside the containing rod cannot be changed when the piston rod moves towards the inside of the containing rod, the movement of the piston rod in the containing rod is guaranteed to be transmitted to the detector by the hydraulic oil to be detected by the detector, and the stable operation of the device is guaranteed.
3. According to the tower crane over-tilting early warning device, after the control room receives signals to generate early warning, the rotating cylinder is utilized to drive the folding arm to rotate, so that the folding arm is attached to the hook of the lifting hook, meanwhile, the folding arm drives the locking piece to rotate, the locking piece is enabled to push the opening and closing piece to rotate, the locking piece penetrates through the opening and closing piece to enter the locking ring, the hung goods are limited on the lifting hook through the folding arm, the goods are prevented from suddenly sliding off the lifting hook to cause danger to the lower side due to over-tilting of the tower crane, and the limiting structure similar to a 'key ring' function is utilized to enhance the limiting effect on the hung goods between the folding arm and the lifting hook.
Drawings
FIG. 1 is a schematic view of the foundation structure of the present invention;
FIG. 2 is a schematic view of the structure of the tower body of the present invention;
FIG. 3 is a schematic diagram of a tower crane mechanism according to the present invention;
FIG. 4 is a schematic diagram of a detection mechanism according to the present invention;
FIG. 5 is a schematic view of a buffer protection mechanism according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 5A;
FIG. 7 is a schematic view of a locking mechanism of the present invention;
FIG. 8 is an enlarged schematic view of the structure of FIG. 7B;
FIG. 9 is a schematic diagram of the whole structure of the early warning device of the present invention.
In the figure: 1. a foundation; 2. a tower crane mechanism; 21. a tower body; 22. a tower arm; 23. a lifting hook; 24. a control room; 3. a detection mechanism; 31. an accommodating rod; 32. a detector; 33. a manual communication valve; 34. a rail frame; 35. a piston rod; 36. a first spring; 37. a top moving member; 4. a buffer protection mechanism; 41. a top block; 42. a limiting ring; 43. a supporting rod; 44. a first rack; 45. a gear; 46. a slide rail; 47. a second rack; 48. a linkage member; 49. a positioning frame; 410. a second spring; 411. an electric control telescopic limiting piece; 5. a locking mechanism; 51. a rotary cylinder; 52. folding the arms; 53. a capture ring; 54. an opening and closing member; 55. and a locking piece.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As described in the background art, the defects in the prior art are overcome, and in order to solve the technical problems, the application provides an over-tilting early warning device of a tower crane.
In an exemplary embodiment of the present application, as shown in fig. 1-9, an over-tilting early warning device of a tower crane includes a foundation 1, a tower crane mechanism 2 disposed on the foundation 1, a detection mechanism 3 disposed on the tower crane mechanism 2, and a buffer protection mechanism 4 disposed on the tower crane mechanism 2, where the tower crane mechanism 2 includes a tower body 21, and the tower bodies 21 are connected end to end in sequence, and the tower body 21 is fixedly mounted on the foundation 1;
the detection mechanism 3 comprises a piston rod 35 and a jacking piece 37, wherein the piston rods 35 are arranged on the tower bodies 21, the jacking piece 37 is fixedly arranged at the bottom of each tower body 21, the piston rods 35 on the upper and lower adjacent tower bodies 21 are propped against the jacking piece 37, and the jacking piece 37 is positioned above the piston rods 35;
the buffer protection mechanism 4 comprises a top block 41, a supporting rod 43, a second spring 410 and an electric control telescopic limiting piece 411, wherein the top block 41 is fixedly installed at four corners of the bottom of each tower body 21, the supporting rod 43 is arranged at four corners of the top of each tower body 21, the top blocks 41 on the tower bodies 21 adjacent up and down are propped against the supporting rod 43, the top blocks 41 are located above the supporting rods 43, the tower bodies 21 are provided with the second springs 410, the electric control telescopic limiting pieces 411 are arranged on the tower bodies 21, the initial state of the second springs 410 is provided with reset force, the electric control telescopic limiting pieces 411 control the release of the reset force of the second springs 410, and the reset force of the second springs 410 drives the supporting rods 43 to move towards the top blocks 41.
When the invention is used:
firstly paving a foundation 1, then arranging a plurality of tower bodies 21 on the foundation 1 in an end-to-end manner, at the moment, propping up a moving part 37 against a piston rod 35 from top to bottom, propping up a propping up block 41 against a propping up rod 43, when the tower crane tilts excessively, namely, tilting excessively between the upper and lower adjacent tower bodies 21 at a certain position, the upper tower body 21 drives the moving part 37 on the upper tower body 21 to deflect and move, so that the moving part 37 pushes down the piston rod 35 along with the movement of the moving part 37 due to the propping up of the piston rod 35, thereby the movement of the piston rod 35 generates a signal to be transmitted to an operator for displaying, so as to perform tilting early warning on the operator, and meanwhile, after the tilting early warning signal is generated, the electric control of a second spring 410 is released by an electric control expansion limiting part 411, so that the resetting force of the second spring 410 drives the propping up rod 43 to move upwards, and the propping up block 41 is propped up, when the upper tower body 21 drives the moving part 41 to deflect, so that the moving part 41 deflects, the moving part 35 is driven by the moving part 35, and the tilting early warning signal is transmitted to the tower body 21 to the operator to perform tilting early warning on the tower crane, and the tilting early warning is opposite to the tilting moment when the tower crane is required to have a certain time to run for stopping and the tilting and the tower crane;
the piston rod 35 is driven to move downwards by the jacking piece 37 through the deflection movement of the tower body 21 above the tilting, so that a signal generated by the movement of the piston rod 35 is transmitted to the front of an operator for displaying, the operator is subjected to tilting early warning of the tower crane, meanwhile, the control of the second spring 410 is relieved by the electric control telescopic limiting piece 411, the restoring force of the second spring 410 drives the supporting rod 43 to move upwards, the supporting rod 43 on the tower body 21 below provides a restraining force opposite to the deflection movement to restrain and buffer the tilting of the tower crane, the buffering time before tilting of the tower crane is effectively increased, the usable time for evacuating the operator is prolonged, and the use safety of the tower crane is improved.
Further, an adapting port is formed in the bottom end of the top block 41, the adapting port is a slot of the table body, the cross-sectional area of the top end of the supporting rod 43 is the same as that of the top end of the adapting port, and when the top block 41 deflects and moves, the inner side wall of the adapting port moves to abut against the supporting rod 43 so as to push the supporting rod 43 to move downwards.
Further, the tower crane mechanism 2 further comprises a tower arm 22, the tower arm 22 is rotatably matched with the tower body 21 at the top end, a lifting hook 23 is arranged on the tower arm 22, a control chamber 24 is arranged on the tower arm 22, and the control chamber 24 controls the lifting hook 23 to move on the tower arm 22 so as to carry out lifting operation.
Further, the detection mechanism 3 further comprises a containing rod 31, the containing rod 31 is fixedly installed on the tower body 21, the detector 32 is fixedly installed at the bottom of the containing rod 31, the detection end of the detector 32 is communicated with the inside of the containing rod 31, the detector 32 is sealed with the containing rod 31, the manual communication valve 33 is arranged at the upper part of the containing rod 31, and the manual communication valve 33 is used for controlling the vertical communication in the containing rod 31.
Further, the lower part inside the accommodating rod 31 (between the opening and closing end of the manual communication valve 33 and the detecting end of the detector 32) is filled with hydraulic oil, so that the volume inside the accommodating rod 31 cannot be changed when the piston rod 35 moves into the accommodating rod 31, and the movement of the piston rod 35 inside the accommodating rod 31 can be ensured to be transmitted to the detector 32 by the hydraulic oil to be detected by the detector 32.
Further, a detector 32 is in signal communication with the control cabin 24.
Further, the top of the tower body 21 is fixedly provided with a rail frame 34, the rail frame 34 is opposite to the accommodating rod 31, the rail frame 34 is located above the accommodating rod 31, the rail frame 34 is provided with a piston rod 35 in sliding fit, the bottom end of the piston rod 35 penetrates through the accommodating rod 31, the piston rod 35 is sealed with the accommodating rod 31, the top end of the rail frame 34 is provided with a first spring 36, the first spring 36 is sleeved on the piston rod 35, one end of the first spring 36 is connected with the rail frame 34, and the other end of the first spring 36 is connected with the piston rod 35.
Wherein, after the tower crane is installed, all manual communication valves 33 are opened to communicate the upper and lower parts of the inside of the accommodating rod 31, and when each tower body 21 is transported or installed in a closed state, hydraulic oil in the closed state is prevented from being extruded from the position between the accommodating rod 31 and the piston rod 35 along with shaking, so that hydraulic oil is prevented from leaking; when the tower body 21 adjacent to each other from top to bottom at a certain place is over-inclined, the upper tower body 21 drives the top moving part 37 to deflect and move, the piston rod 35 is driven to move downwards on the rail frame 34 along with the movement of the top moving part 37, the first spring 36 is compressed, the movement of the piston rod 35 in the accommodating rod 31 extrudes hydraulic oil, the detector 32 detects a signal through the conduction of the hydraulic oil, and the signal is transmitted to the control room 24 to remind an operator of over-inclination of the tower crane.
Further, the buffer protection mechanism 4 further comprises a limiting ring 42, each of four corners of the top of each tower body 21 is fixedly provided with the limiting ring 42, the supporting rod 43 is in sliding fit with the limiting ring 42, the bottom end of the supporting rod 43 is fixedly provided with a first rack 44, each of four corners of the top of each tower body 21 is in rolling fit with a gear 45, and the gears 45 are meshed with the first racks 44.
Further, slide rails 46 are fixedly installed at four corners of the top of each tower body 21, second racks 47 are slidably matched on the slide rails 46, the second racks 47 are meshed with gears 45, linkage members 48 are fixedly installed on the second racks 47, positioning frames 49 are fixedly installed on the tower bodies 21, one ends of the linkage members 48 are slidably matched with the positioning frames 49, second springs 410 are arranged on the positioning frames 49, the second springs 410 are located above the linkage members 48, one ends of the second springs 410 are connected with the positioning frames 49, the other ends of the second springs 410 are connected with the linkage members 48, electric control telescopic limiting members 411 are arranged on the positioning frames 49, limiting extension rods of the electric control telescopic limiting members 411 penetrate through the positioning frames 49, and sliding of the linkage members 48 on the positioning frames 49 is limited by the electric control telescopic limiting members 411.
After the control room 24 receives a signal to generate an early warning, the electric control telescopic limiting piece 411 is synchronously started, so that the electric control telescopic limiting piece 411 withdraws the limiting extension rod to release the limit of the linkage piece 48, then the reset force of the second spring 410 drives the linkage piece 48 to move on the positioning frame 49, the linkage piece 48 drives the second rack 47 to move on the sliding rail 46, the second rack 47 drives the gear 45 to rotate, the gear 45 drives the first rack 44 to move, the first rack 44 drives the supporting rod 43 to move on the limiting ring 42, and accordingly the supporting rod 43 pushes the jacking block 41, the lower tower body 21 limits and protects the upper tower body 21 by utilizing the supporting rod 43, the over-tilting buffer time is increased to lengthen the evacuation time of workers, and the protection of the workers is improved.
Further, the lifting hook 23 is further provided with a locking mechanism 5, when the tower crane is overturned, the locking mechanism 5 limits the suspended goods on the lifting hook 23, the locking mechanism 5 comprises a rotating cylinder 51, the rotating cylinder 51 is fixedly arranged on the lifting hook 23, the rotating cylinder 51 penetrates through the lifting hook 23, a folding arm 52 is fixedly arranged on the shaft of the rotating cylinder 51, and the folding arm 52 is matched with the outer wall of the hook of the lifting hook 23, so that the folding arm 52 is completely attached to the hook of the lifting hook 23 when rotating to the hook of the lifting hook 23.
Further, a locking ring 53 is fixedly installed on a hook of the lifting hook 23, an open notch is formed in the bottom end of the locking ring 53, an opening and closing piece 54 is rotatably matched with the open notch of the locking ring 53, the opening and closing piece 54 cannot rotate towards the outer ring of the locking ring 53, a locking piece 55 is fixedly installed on the folding arm 52, and when the folding arm 52 is attached to the hook of the lifting hook 23, the locking piece 55 is limited in the locking ring 53.
Further, a torsion spring is provided on the shaft of the opening and closing member 54, one end of the torsion spring is connected to the opening and closing member 54, and the other end of the torsion spring is connected to the lock ring 53.
After the control room 24 receives a signal to generate an early warning, the rotating cylinder 51 is started, the rotating cylinder 51 drives the folding arm 52 to rotate, so that the folding arm 52 is attached to a hook of the lifting hook 23, meanwhile, the folding arm 52 drives the locking piece 55 to rotate, so that the locking piece 55 pushes the opening and closing piece 54 to rotate, the locking piece 55 penetrates through the opening and closing piece 54 to enter the locking ring 53, suspended goods are limited on the lifting hook 23 through the folding arm 52, the goods are prevented from suddenly sliding down from the lifting hook 23 to be dangerous to the lower side due to over-tilting of the tower crane, a limiting structure similar to a 'key buckle' function is formed by the locking piece 55 and the locking ring 53, and the limiting effect on the suspended goods between the folding arm 52 and the lifting hook 23 is enhanced.
Working principle:
firstly paving a foundation 1, then arranging a plurality of tower bodies 21 on the foundation 1 in an end-to-end manner, at the moment, propping up a moving part 37 against a piston rod 35 from top to bottom, propping up a propping up block 41 against a propping up rod 43, when the tower crane tilts excessively, namely, tilting excessively between the upper and lower adjacent tower bodies 21 at a certain position, the upper tower body 21 drives the moving part 37 on the upper tower body 21 to deflect and move, so that the moving part 37 pushes down the piston rod 35 along with the movement of the moving part 37 due to the propping up of the piston rod 35, thereby the movement of the piston rod 35 generates a signal to be transmitted to an operator for displaying, so as to perform tilting early warning on the operator, and meanwhile, after the tilting early warning signal is generated, the electric control of a second spring 410 is released by an electric control expansion limiting part 411, so that the resetting force of the second spring 410 drives the propping up rod 43 to move upwards, and the propping up block 41 is propped up, when the upper tower body 21 drives the moving part 41 to deflect, so that the moving part 41 deflects, the moving part 35 is driven by the moving part 35, and the tilting early warning signal is transmitted to the tower body 21 to the operator to perform tilting early warning on the tower crane, and the tilting early warning is opposite to the tilting moment when the tower crane is required to have a certain time to run for stopping and the tilting and the tower crane;
wherein, after the tower crane is installed, all manual communication valves 33 are opened to communicate the upper and lower parts of the inside of the accommodating rod 31, and when each tower body 21 is transported or installed in a closed state, hydraulic oil in the closed state is prevented from being extruded from the position between the accommodating rod 31 and the piston rod 35 along with shaking, so that hydraulic oil is prevented from leaking; when the tower body 21 adjacent to each other from top to bottom at a certain place is over-inclined, the upper tower body 21 drives the top moving part 37 to deflect and move, the piston rod 35 is driven to move downwards on the rail frame 34 along with the movement of the top moving part 37, the first spring 36 is compressed, the movement of the piston rod 35 in the accommodating rod 31 extrudes hydraulic oil, the detector 32 detects a signal through the conduction of the hydraulic oil, and the signal is transmitted to the control room 24 to remind an operator of over-inclination of the tower crane;
after the control room 24 receives signals to generate early warning, the electric control telescopic limiting piece 411 is synchronously started, the electric control telescopic limiting piece 411 is retracted to limit the extending rod, limiting of the linkage piece 48 is relieved, then the reset force of the second spring 410 drives the linkage piece 48 to move on the locating frame 49, the linkage piece 48 drives the second rack 47 to move on the sliding rail 46, the second rack 47 drives the gear 45 to rotate, the gear 45 drives the first rack 44 to move, the first rack 44 drives the supporting rod 43 to move on the limiting ring 42, so that the supporting rod 43 pushes the jacking block 41, the lower tower body 21 limits and protects the over-tilting of the upper tower body 21 by utilizing the supporting rod 43, the over-tilting buffer time is increased, the evacuation time of workers is prolonged, and the protection of the workers is improved;
after the control room 24 receives signals to generate early warning, the rotating air cylinder 51 is started, the rotating air cylinder 51 drives the folding arm 52 to rotate, so that the folding arm 52 is attached to a hook of the lifting hook 23, meanwhile, the folding arm 52 drives the locking piece 55 to rotate, the locking piece 55 pushes the opening and closing piece 54 to rotate, so that the locking piece 55 penetrates through the opening and closing piece 54 to enter the locking ring 53, suspended goods are limited on the lifting hook 23 through the folding arm 52, the goods are prevented from suddenly sliding down from the lifting hook 23 to be dangerous to the lower side due to over-tilting of the tower crane, a limiting structure similar to a 'key buckle' function is formed by the locking piece 55 and the locking ring 53, and the limiting effect on the suspended goods between the folding arm 52 and the lifting hook 23 is enhanced.
Although embodiments of the present invention 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 invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a tower crane overflows early warning device, includes ground (1), sets up tower crane mechanism (2) on ground (1), set up detection mechanism (3) on tower crane mechanism (2), set up buffering protection machanism (4) on tower crane mechanism (2), its characterized in that:
the tower crane mechanism (2) comprises a tower body (21), a plurality of tower bodies (21) are connected end to end in sequence, and the tower bodies (21) are fixedly arranged on the foundation (1);
the detection mechanism (3) comprises a piston rod (35) and a jacking piece (37), wherein the piston rod (35) is arranged on each tower body (21), the jacking piece (37) is fixedly arranged at the bottom of each tower body (21), the piston rods (35) on the upper and lower adjacent tower bodies (21) are propped against the jacking piece (37), and the jacking piece (37) is positioned above the piston rod (35);
the buffer protection mechanism (4) comprises a top block (41), a supporting rod (43), second springs (410) and electric control telescopic limiting pieces (411), wherein each top block (41) is fixedly installed at four corners of the bottom of each tower body (21), each supporting rod (43) is arranged at four corners of the top of each tower body (21), the top blocks (41) on the tower bodies (21) which are adjacent up and down are abutted against the supporting rods (43), the top blocks (41) are located above the supporting rods (43), the second springs (410) are arranged on the tower bodies (21), the electric control telescopic limiting pieces (411) are arranged on the tower bodies (21), reset force is arranged in the initial state of each second spring (410), the electric control telescopic limiting pieces (411) control the release of the reset force of the second springs (410), and the reset force of the second springs (410) drives the supporting rods (43) to move towards the top blocks (41).
2. The tower crane over-tilting early warning device according to claim 1, wherein:
the tower crane mechanism (2) further comprises a tower arm (22), the tower arm (22) is in running fit with the tower body (21) at the top end, a lifting hook (23) is arranged on the tower arm (22), a control chamber (24) is arranged on the tower arm (22), and the control chamber (24) controls the lifting hook (23) to move on the tower arm (22) to carry out lifting operation.
3. The tower crane over-tilting early warning device according to claim 2, wherein:
the detection mechanism (3) further comprises a containing rod (31), the containing rod (31) is fixedly installed on the tower body (21), a detector (32) is fixedly installed at the bottom of the containing rod (31), the detection end of the detector (32) is communicated with the inside of the containing rod (31), the detector (32) is sealed with the containing rod (31), manual communication valves (33) are arranged on the upper portion of the containing rod (31), and the manual communication valves (33) are used for controlling the vertical communication in the containing rod (31) to be opened and closed.
4. The tower crane over-tilting early warning device according to claim 3, wherein:
the utility model discloses a tower body, including tower body (21), including body of a tower, holding pole (31) and rack (34), the top of body of a tower (21) is all fixed mounting has rack (34), rack (34) with holding pole (31) is relative, rack (34) are located the top of holding pole (31), all sliding fit has on rack (34) piston rod (35), the bottom of piston rod (35) runs through to the inside of holding pole (31), piston rod (35) with seal between holding pole (31), rack (34) top all is provided with first spring (36), first spring (36) all overlaps to establish on piston rod (35), the one end of first spring (36) with rack (34) links to each other, the other end of first spring (36) with piston rod (35) link to each other.
5. The tower crane over-tilting early warning device according to claim 4, wherein:
the buffer protection mechanism (4) further comprises limiting rings (42), each limiting ring (42) is fixedly installed at four corners of the top of the tower body (21), the supporting rods (43) are in sliding fit with the limiting rings (42), first racks (44) are fixedly installed at the bottom ends of the supporting rods (43), gears (45) are in running fit with the four corners of the top of the tower body (21), and the gears (45) are meshed with the first racks (44).
6. The tower crane over-tilting early warning device according to claim 5, wherein:
every tower body (21) top four corners department all fixed mounting has slide rail (46), equal sliding fit has second rack (47) on slide rail (46), second rack (47) all with gear (45) are engaged with, equal fixed mounting has link (48) on second rack (47), equal fixed mounting has locating rack (49) on tower body (21), link (48) one end with locating rack (49) sliding fit, all be provided with on locating rack (49) second spring (410), second spring (410) are located the top of link (48), the one end of second spring (410) with locating rack (49) link to each other, the other end of second spring (410) with link (48) link to each other, all be provided with on locating rack (49) automatically controlled flexible locating piece (411), automatically controlled flexible locating piece's locating rack (49) one end run through locating rack (49), second spring (410) one end with automatically controlled flexible locating piece (49) is in the top of locating rack (411).
7. The tower crane over-tilting early warning device according to claim 6, wherein:
the lifting hook is characterized in that a locking mechanism (5) is further arranged on the lifting hook (23), the locking mechanism (5) limits hung goods to the lifting hook (23) when the tower crane is overturned, the locking mechanism (5) comprises a rotating cylinder (51), the rotating cylinder (51) is fixedly arranged on the lifting hook (23), the rotating cylinder (51) penetrates through the lifting hook (23), a folding arm (52) is fixedly arranged on the shaft of the rotating cylinder (51), and the folding arm (52) is matched with the outer wall of the hook of the lifting hook (23), so that the folding arm (52) is completely attached to the hook of the lifting hook (23) when rotating to the hook of the lifting hook (23).
8. The tower crane over-tilt warning device according to claim 7, wherein:
the novel lifting hook is characterized in that a locking ring (53) is fixedly installed on a hook of the lifting hook (23), an open notch is formed in the bottom end of the locking ring (53), an opening and closing piece (54) is in running fit on the open notch of the locking ring (53), the opening and closing piece (54) cannot rotate towards the outer ring of the locking ring (53), a locking piece (55) is fixedly installed on the folding arm (52), and the locking piece (55) is limited in the locking ring (53) when the folding arm (52) is attached to the hook of the lifting hook (23).
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| CN116425062B (en) | 2023-09-12 |
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