CN116692688B - Tower crane lifting hook anti-falling device - Google Patents
Tower crane lifting hook anti-falling device Download PDFInfo
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- CN116692688B CN116692688B CN202310968113.XA CN202310968113A CN116692688B CN 116692688 B CN116692688 B CN 116692688B CN 202310968113 A CN202310968113 A CN 202310968113A CN 116692688 B CN116692688 B CN 116692688B
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- lifting hook
- wire rope
- steel wire
- rotating shaft
- far away
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- 230000007246 mechanism Effects 0.000 claims abstract description 72
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 239000000725 suspension Substances 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B66C15/00—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
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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
Abstract
The invention discloses a tower crane lifting hook anti-falling device, which comprises a lifting hook and a steel wire rope, and is characterized in that: the wire rope is threaded in the middle of the lifting hook, the tension trigger mechanism is arranged in the center of the lifting hook, the hanging mechanism is arranged on the inner side of the lifting hook close to the edge, the wire rope penetrates through the center of the tension trigger mechanism, the hanging mechanism comprises a clamping mechanism and a fixed point rolling mechanism, the fixed point rolling mechanism is arranged on the inner side of the upper portion of the lifting hook, the clamping mechanism is arranged between the fixed point rolling mechanisms, and the clamping mechanism is sleeved on the outer side of the wire rope. The invention belongs to the technical field of tower crane hook anti-falling, and solves the problems that a tower crane hook anti-falling device can not lock a steel wire rope in time, so that the steel wire rope is broken and single side suspension is easy to fall off due to the fact that a circuit switch is triggered when the breaking tension of the steel wire rope disappears and a mechanism for moving a fixed point to the center of the hook is arranged.
Description
Technical Field
The invention belongs to the technical field of falling prevention of tower crane hooks, and particularly relates to a falling prevention device of a tower crane hook.
Background
The tower crane is a crane device used in the fields of construction sites and industry, is mainly used for hoisting and moving heavy objects, is high and stable, and can be used for carrying out various complex hoisting tasks on construction sites.
The internal stress that tower crane wire rope produced in the use is complicated, and naked eye or common detection means are unable to be perceived, when the local internal stress of lifting hook wire rope reaches the limit, can lead to wherein wire rope fracture suddenly, and lifting hook that wire rope fracture led to falls and dangerous, causes the threat to the life safety of workman who works below the tower crane.
The existing tower crane lifting hook rope breakage anti-falling device is mainly characterized in that a mechanism for triggering the steel wire rope to be held tightly by the inclination of a lifting hook after the steel wire rope is broken is adopted, and when the mode is in a problem: when the lifting hook inclines under the tension of the steel wire on one unbroken side, the gravity center of the lifting hook (with goods) is lowered by one end distance, when the mechanism tightly holds the steel wire, the lifting hook (with goods) has obtained a certain dropping speed, at the moment, the unilateral steel wire rope needs to bear the tension greater than the gravity of the lifting hook (with goods), so that the unilateral steel wire rope is easily broken, the lifting hook is completely inclined under the condition, the hook in the lifting hook can collide with the steel wire rope pulley shaft of the lifting hook, and the goods below the lifting hook are easy to fall off.
Disclosure of Invention
To above-mentioned circumstances, for overcoming prior art's defect, this scheme is to the rope locking untimely and the problem that leads to the lifting hook slope of tower crane lifting hook wire rope when breaking, adopt and judge wire rope fracture and place the wire rope hanging position in the mode at lifting hook center through tension variation, through setting up the mechanism that can trigger circuit switch and remove the lifting hook center with the fixed point when wire rope fracture tension disappears, under the intervention use of spring, gear and electro-magnet, the timely fixed of wire rope and the steady hanging of lifting hook after changing the fixed point have been realized, the safe stable anti-falling function of tower crane lifting hook has been accomplished, the tower crane lifting hook anti-falling device that has been difficult to solve among the prior art is to the rope locking untimely make wire rope fracture and unilateral suspension make the problem that the goods easily drop.
The utility model provides a tower crane lifting hook anti-falling device, through setting up can trigger circuit switch and remove the mechanism in lifting hook center with the fixed point when wire rope fracture tension disappears, make the device play the effect of timely fixed and stable lifting hook when tower crane lifting hook wire rope fracture.
The technical scheme adopted by the scheme is as follows: the utility model provides a tower crane lifting hook anti-falling device, including tension trigger mechanism, hanging mechanism, lifting hook and wire rope, wire rope wears to locate the lifting hook middle part, tension trigger mechanism locates the lifting hook center, hanging mechanism locates the inboard that the lifting hook is close to the edge, wire rope passes from tension trigger mechanism center, hanging mechanism includes clamping mechanism and fixed point rolling mechanism, the inboard on lifting hook upper portion is located to fixed point rolling mechanism, clamping mechanism locates between the fixed point rolling mechanism, the wire rope outside is located to the clamping mechanism cover.
As the scheme further preferably, tension triggering mechanism includes base, sliding tray, sliding block, movable pivot, pinch roller, fixed pivot, tight pulley, spring link board, electro-magnet switch, contact block and spring, the inboard center of lifting hook is located to the base, the sliding tray is seted up in the base one side of keeping away from the lifting hook, the sliding tray is located inside the sliding tray, sliding tray and sliding block sliding connection, one side of keeping away from the base is located to the movable pivot, the one end of keeping away from the sliding block is located to movable pivot to the pinch roller cover, pinch roller and movable pivot rotate to be connected, a pair of fixed pivot locates the base both sides, the fixed pulley is located the fixed pivot and is kept away from the one end of lifting hook, and the fixed pulley rotates with fixed pivot to be connected, the lifting hook passes between fixed pulley and the pinch roller, the top of lifting hook is kept away from to the base is located to the spring link board, the electro-magnet switch is located the spring link board and is kept away from one side of base, the movable pivot is located to the contact block is close to one side of electro-magnet switch, the movable pivot is located between movable pivot and the spring link board.
When the tower crane is in use, under the normal working state of the tower crane, the spring is in an elongation state, the movable rotating shaft is acted by the upward acting force of the spring, the pressing wheel is clung to the lower side of the steel wire rope, the pair of fixed wheels are clung to the upper side of the steel wire rope, after the steel wire rope is broken, the tension in the steel wire rope disappears, the spring pulls the sliding block, the movable rotating shaft and the pressing wheel upwards, the sliding block slides in the sliding groove, the contact block is inserted into the electromagnet switch, the circuit in the contact block is communicated, and the electromagnet is started.
Preferably, the clamping mechanism comprises friction blocks, synchronous gears, a friction block rotating shaft, rotating shaft connecting plates, magnets, electromagnet fixing points and electromagnets, wherein a pair of friction blocks are arranged on two sides of a steel wire rope, the synchronous gears are arranged on one side, close to a lifting hook, of the friction blocks, one sides, close to the steel wire rope, of the synchronous gears are meshed and connected, the friction block rotating shaft penetrates through the friction blocks, the rotating shaft connecting plates are arranged on two sides of the friction block rotating shaft, the rotating shaft connecting plates are fixedly connected with one ends of the same sides of the pair of friction block rotating shafts, the magnets are arranged on one side, far away from the steel wire rope, of the outer friction blocks, the magnets are arranged on the lower portions of the friction blocks, the electromagnet fixing points are arranged on the outer sides, close to the friction blocks, of the lifting hooks, the electromagnets are arranged on one ends, close to the magnets, of the electromagnet fixing points, and the output ends of the electromagnet fixing points face the positions of the magnets.
When the locking device is used, the electromagnet is started to enable the output end of the electromagnet to generate repulsive force to the magnet, the friction block close to the electromagnet is pushed to rotate around the friction block rotating shaft by the repulsive force, the friction block is meshed by the synchronous gear, the other friction block synchronously rotates along with the repulsive force, the wider part of the lower side of the friction block rotates between the pair of friction blocks to clamp a steel wire rope therein, the friction block moves downwards along with the lifting hook along with the fracture of the steel wire rope on the other side, the friction block is subjected to the upward friction action of the steel wire rope, the friction block generates a further rotating trend, and the radius of the friction block in the rotating direction is gradually thickened, so that the steel wire rope clamp is tighter along with the rotating friction block, and the effect of locking the steel wire rope is achieved.
Specifically, fixed point rolling mechanism includes antifriction slot, gyro wheel axle and gyro wheel, a pair of antifriction slot is seted up in the inboard on lifting hook upper portion, the centre of antifriction slot is higher than both ends, the gyro wheel axle is located the pivot and is kept away from one side of friction block even the board, the gyro wheel cover is located the gyro wheel axle and is kept away from the one end that the pivot was even the board, and the gyro wheel is connected with gyro wheel axle rotation, and the gyro wheel is kept away from the one end of pivot even the board and is located the antifriction slot inside.
When the device is used, the friction block is used for fixing the steel wire rope, the lifting hook is acted by gravity to enable the roller to move towards the middle along the rolling groove, the roller stays in the middle of the rolling groove after swinging buffering, and the lifting hook is stably hung from the middle of the rolling groove, so that the lifting hook is prevented from tilting.
The beneficial effect that this scheme of adoption above-mentioned structure obtained is as follows:
(1) Compared with the prior art, the invention has the advantages that the rotating wheels pressed by the springs are arranged on the two sides of the steel wire rope, so that the device can act when the tension of the steel wire rope disappears and turn on the tension triggering mechanism of the corresponding circuit, the device can rapidly respond to the breakage of the steel wire rope to clamp the steel wire rope, the single-side steel wire rope caused by reaction delay is prevented from being broken by the falling lifting hook (with goods), and the safety of the device is improved.
(2) According to the invention, the electromagnet is arranged to trigger the preliminary clamping and the clamping mechanism which can rapidly lock the steel wire rope through the rotation of the friction block with the increased radius when the lifting hook falls down is used, so that the device can lock the steel wire rope within the falling extremely short distance, and the lifting hook (together with goods) is prevented from falling.
(3) Compared with the prior art, the fixed point rolling mechanism is arranged at the center of the top of the lifting hook after the fixed point clamps the steel wire rope, so that the connecting point of the single-side steel wire rope and the lifting hook is changed from the edge to the center top of the lifting hook, the lifting hook does not incline after the steel wire rope is broken, the falling of goods caused by collision inside the lifting hook is avoided, and the safety of equipment is improved.
Drawings
Fig. 1 is a schematic diagram of the whole structure of a falling protection device for a tower crane hook according to the scheme;
fig. 2 is a side view of a tower crane hook fall protection device according to the present solution;
FIG. 3 is a partial cross-sectional view of portion A-A of FIG. 2;
FIG. 4 is a perspective view of FIG. 3;
FIG. 5 is a schematic view of the structure of the tension trigger mechanism in this embodiment;
FIG. 6 is a side view of the tension trigger mechanism of the present embodiment;
fig. 7 is a schematic structural diagram of the hanging mechanism (without rolling grooves) in the present embodiment.
The device comprises a tension trigger mechanism 1, a hanging mechanism 2, a hanging mechanism 3, a lifting hook 4, a steel wire rope 11, a base 12, a sliding groove 13, a sliding block 14, a movable rotating shaft 15, a pressing wheel 16, a fixed rotating shaft 17, a fixed wheel 18, a spring connecting plate 19, an electromagnet switch 110, a contact block 111, a spring 21, a clamping mechanism 211, a friction block 212, a synchronous gear 213, a friction block rotating shaft 214, a rotating shaft connecting plate 215, a magnet 216, an electromagnet fixed point 217, an electromagnet 22, a fixed point rolling mechanism 221, a rolling groove 222, a roller connecting shaft 223 and a roller.
The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this disclosure, illustrate and do not limit the disclosure.
Detailed Description
The technical solutions in the embodiments of the present solution will be clearly and completely described below with reference to the drawings in the embodiments of the present solution, and it is apparent that the described embodiments are only some embodiments of the present solution, but not all embodiments; all other embodiments, based on the embodiments in this solution, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of protection of this solution.
In the description of the present embodiment, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on those shown in the drawings, merely to facilitate description of the present embodiment and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present embodiment.
As shown in fig. 1-7, the tower crane hook anti-falling device provided by the scheme comprises a tension trigger mechanism 1, a hanging mechanism 2, a hook 3 and a steel wire rope 4, wherein the steel wire rope 4 is arranged in the middle of the hook 3 in a penetrating mode, the tension trigger mechanism 1 is arranged at the center of the hook 3, the hanging mechanism 2 is arranged at the inner side of the hook 3 close to the edge, the steel wire rope 4 passes through the center of the tension trigger mechanism 1, the hanging mechanism 2 comprises a clamping mechanism 21 and a fixed point rolling mechanism 22, the fixed point rolling mechanism 22 is arranged at the inner side of the upper portion of the hook 3, the clamping mechanism 21 is arranged between the fixed point rolling mechanisms 22, and the clamping mechanism 21 is sleeved on the outer side of the steel wire rope 4.
As shown in fig. 5 and 6, the tension triggering mechanism 1 includes a base 11, a sliding groove 12, a sliding block 13, a movable rotating shaft 14, a pinch roller 15, a fixed rotating shaft 16, a fixed wheel 17, a spring connecting plate 18, an electromagnet switch 19, a contact block 110 and a spring 111, wherein the base 11 is arranged at the center of the inner side of the lifting hook 3, the sliding groove 12 is arranged at one side of the base 11 far away from the lifting hook 3, the sliding block 13 is arranged inside the sliding groove 12, the sliding groove 12 is in sliding connection with the sliding block 13, the movable rotating shaft 14 is arranged at one side of the sliding block 13 far away from the base 11, the pinch roller 15 is sleeved at one end of the movable rotating shaft 14 far away from the sliding block 13, the pinch roller 15 is in rotating connection with the movable rotating shaft 14, a pair of fixed rotating shafts 16 are arranged at two sides of the base 11, the fixed wheel 17 is arranged at one end of the fixed rotating shaft 16 far away from the lifting hook 3, the fixed wheel 17 is in rotating connection with the fixed rotating shaft 16, the lifting hook 3 passes through between the fixed wheel 17 and the pinch roller 15, the spring connecting plate 18 is arranged at the top of the base 11 far away from the lifting hook 3, the electromagnet switch 19 is arranged at one side of the spring connecting plate 18 far away from the base 11, the contact block 110 is arranged at one side of the electromagnet switch 19 near the electromagnet switch 19, the movable rotating shaft 14 is arranged at one side near the electromagnet switch 19, the movable rotating shaft 14 is arranged between the rotating shaft 14 and between the fixed rotating shaft 14 and the rotating shaft is arranged near the rotating shaft 18.
As shown in fig. 7, the clamping mechanism 21 includes a friction block 211, a synchronous gear 212, a friction block rotating shaft 213, a rotating shaft connecting plate 214, a magnet 215, an electromagnet fixing point 216 and an electromagnet 217, wherein the pair of friction blocks 211 are arranged on two sides of the steel wire rope 4, the synchronous gear 212 is arranged on one side of the friction block 211 close to the lifting hook 3, the pair of synchronous gears 212 are meshed and connected on one side of the steel wire rope 4, the friction block rotating shaft 213 penetrates through the friction block 211, the pair of rotating shaft connecting plate 214 is arranged on two sides of the friction block rotating shaft 213, the rotating shaft connecting plate 214 is fixedly connected with one end on the same side of the pair of friction block rotating shafts 213, the magnet 215 is arranged on one side, far away from the steel wire rope 4, of the outer friction block 211, the magnet 215 is arranged on the lower portion of the friction block 211, the electromagnet fixing point 216 is arranged on the outer side, the lifting hook 3 is arranged on one end, close to the electromagnet fixing point 216, of the electromagnet 217 is arranged on the other end, close to the electromagnet fixing point 216, and the output end of the electromagnet fixing point 216 faces the position of the magnet 215.
As shown in fig. 4 and 7, the fixed point rolling mechanism 22 includes a rolling groove 221, a roller connecting shaft 222 and a roller 223, the pair of rolling grooves 221 are formed on the inner side of the upper portion of the hook 3, the middle of the rolling groove 221 is higher than two ends, the roller connecting shaft 222 is arranged on one side of the rotating shaft connecting plate 214 far away from the friction block 211, the roller 223 is sleeved on one end of the roller connecting shaft 222 far away from the rotating shaft connecting plate 214, the roller 223 is rotationally connected with the roller connecting shaft 222, and one end of the roller 223 far away from the rotating shaft connecting plate 214 is arranged inside the rolling groove 221.
When the tower crane is particularly used, in a normal working state, the spring 111 is in an elongation state, the movable rotating shaft 14 is acted by the upward acting force of the spring 111, the pinch roller 15 is clung to the lower side of the steel wire rope 4 due to the existence of tension in the steel wire rope 4, the pair of fixed wheels 17 are clung to the upper side of the steel wire rope 4, the pinch roller 15 and the fixed wheels 17 rotate along with the movement of the steel wire rope 4, after the steel wire rope 4 breaks, the tension in the steel wire rope 4 disappears, the spring 111 pulls the sliding block 13, the movable rotating shaft 14 and the pinch roller 15 to move upwards, the sliding block 13 slides in the sliding groove 12, the contact block 110 is inserted into the electromagnet switch 19, the circuit in the contact block 110 is communicated, and the electromagnet 217 is started.
The electromagnet 217 is started to generate repulsive force on the magnet 215 by the output end of the electromagnet 217, the repulsive force pushes the friction block 211 close to the electromagnet 217 to rotate around the friction block rotating shaft 213, the other friction block 211 rotates synchronously with the friction block 211 under the meshing action of the synchronous gear 212, the wider part of the lower side of the friction block 211 rotates between the pair of friction blocks 211 to clamp the steel wire rope 4 therein, the friction block 211 moves downwards along with the lifting hook 3 along with the breakage of the steel wire rope 4 on the other side, the friction block 211 generates further rotation trend due to the upward friction action of the steel wire rope 4, the radius of the friction block 211 in the rotation direction is gradually thickened, the clamping of the steel wire rope 4 is tighter along with the rotation of the friction block 211, so that the effect of locking the steel wire rope 4 is achieved, meanwhile, the lifting hook 3 is enabled to move towards the middle along the rolling groove 221 under the action of gravity, the rolling wheel 223 stays in the middle of the rolling groove 221 after swinging buffering, the lifting hook 3 is stably hung from the middle of the rolling groove 221, and the lifting hook 3 is prevented from tilting.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit of the solution, the scope of which is defined in the appended claims and their equivalents.
The present embodiment and the embodiments thereof have been described above with no limitation, and the embodiment shown in the drawings is merely one of the embodiments of the present embodiment, and the actual structure is not limited thereto. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the technical solution.
Claims (3)
1. The utility model provides a tower crane lifting hook anti-falling device, includes lifting hook (3) and wire rope (4), its characterized in that: the novel lifting device is characterized by further comprising a tension trigger mechanism (1) and a hanging mechanism (2), wherein the steel wire rope (4) penetrates through the middle of the lifting hook (3), the tension trigger mechanism (1) is arranged at the center of the lifting hook (3), the hanging mechanism (2) is arranged at the inner side of the lifting hook (3) close to the edge, the steel wire rope (4) penetrates through the center of the tension trigger mechanism (1), the hanging mechanism (2) comprises a clamping mechanism (21) and a fixed point rolling mechanism (22), the fixed point rolling mechanism (22) is arranged at the inner side of the upper part of the lifting hook (3), the clamping mechanism (21) is arranged between the fixed point rolling mechanisms (22), the clamping mechanism (21) is sleeved outside the steel wire rope (4), the fixed point rolling mechanism (22) comprises a rolling groove (221), a roller connecting shaft (222) and a roller (223), the pair of rolling grooves (221) are arranged at the inner side of the upper part of the lifting hook (3), the middle of the rolling groove (221) is higher than two ends, the pair of the roller connecting shafts (222) are arranged at the two sides of the clamping mechanism (21), the roller connecting shafts (223) are sleeved at one ends of the roller connecting shafts (223) far away from the roller (21) and are connected with the roller wheels (223), one end of the roller (223) far away from the roller connecting shaft (222) is arranged in the rolling groove (221).
2. The tower crane hook fall arrest device of claim 1, wherein: the tension triggering mechanism (1) comprises a base (11), a sliding groove (12), a sliding block (13), a movable rotating shaft (14), a pressing wheel (15), a fixed rotating shaft (16), a fixed wheel (17), a spring connecting plate (18), an electromagnet switch (19), a contact block (110) and a spring (111), wherein the base (11) is arranged at the center of the inner side of a lifting hook (3), the sliding groove (12) is arranged at one side of the base (11) far away from the lifting hook (3), the sliding block (13) is arranged in the sliding groove (12), the sliding groove (12) is in sliding connection with the sliding block (13), the movable rotating shaft (14) is arranged at one side of the sliding block (13) far away from the base (11), the pressing wheel (15) is sleeved at one end of the movable rotating shaft (14) far away from the sliding block (13), the pressing wheel (15) is in rotating connection with the movable rotating shaft (14), a pair of the fixed rotating shafts (16) are arranged at two sides of the base (11), the fixed wheel (17) is arranged at one end of the fixed rotating shaft (16) far away from the lifting hook (3), the lifting hook (17) is in rotating connection with the fixed wheel (17) in a rotating mode, the lifting hook (17) penetrates through the fixed wheel (17) and passes through the pressing wheel (17), the spring connecting plate (18) is arranged at the top of the base (11) far away from the lifting hook (3), the electromagnet switch (19) is arranged at one side of the spring connecting plate (18) far away from the base (11), the contact block (110) is arranged at one side of the movable rotating shaft (14) close to the electromagnet switch (19), and the spring (111) is arranged between the movable rotating shaft (14) and the spring connecting plate (18).
3. The tower crane hook fall arrest device of claim 2, wherein: the clamping mechanism (21) comprises friction blocks (211), synchronous gears (212), friction block rotating shafts (213), rotating shaft connecting plates (214), magnets (215), electromagnet fixing points (216) and electromagnets (217), wherein a pair of friction blocks (211) are arranged on two sides of a steel wire rope (4), the synchronous gears (212) are arranged on one side, close to a lifting hook (3), of the friction blocks (211), the pair of synchronous gears (212) are meshed and connected on one side, close to the steel wire rope (4), of the friction blocks (211), the friction block rotating shafts (213) penetrate through the friction blocks (211), the pair of rotating shaft connecting plates (214) are arranged on two sides of the friction block rotating shafts (213), the rotating shaft connecting plates (214) are fixedly connected with one ends, on the same side, far away from the steel wire rope (4), of the outer friction blocks (211) are arranged on the magnet (215), the lower portion of the friction blocks (211), the electromagnets (216) are arranged on the outer side, close to the lifting hook (3), of the friction blocks (211), the electromagnets (217) are arranged on the outer sides, close to the steel wire rope (216), the friction blocks, the electromagnet (216), and the fixing points of the electromagnets (215) are arranged on the magnet fixing points (215) of the magnet fixing points, which are located on the magnet (215).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310968113.XA CN116692688B (en) | 2023-08-03 | 2023-08-03 | Tower crane lifting hook anti-falling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310968113.XA CN116692688B (en) | 2023-08-03 | 2023-08-03 | Tower crane lifting hook anti-falling device |
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| Publication Number | Publication Date |
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| CN116692688A CN116692688A (en) | 2023-09-05 |
| CN116692688B true CN116692688B (en) | 2023-09-29 |
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| CN202310968113.XA Active CN116692688B (en) | 2023-08-03 | 2023-08-03 | Tower crane lifting hook anti-falling device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117566604B (en) * | 2023-12-12 | 2024-04-12 | 安徽建工集团建筑机械智能制造有限公司 | Rope breakage anti-falling device for tower crane lifting hook |
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| CN116692688A (en) | 2023-09-05 |
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