Building construction crane with anti-falling safety mechanism
By designing an anti-fall safety mechanism on a construction crane, and using mechanical structures such as worms and worm gears to limit the free fall movement of the material placing plates, the safety hazards of falling construction raw materials are solved, and all-round safety guarantees for construction personnel and structures are achieved.
Patent Information
- Application Number
- CN202510649609.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-06-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When existing construction cranes are lifting construction materials, it is difficult to set up complete protective settings around the lifting work site, which poses a safety hazard of falling and hurting construction personnel and structures.
A crane with an anti-fall safety mechanism is designed, including a drive assembly, a mobile conveying assembly, a traction mechanism and a fall protection mechanism. The anti-fall mechanism works synergistically with the worm, worm gear, connecting rod and brake block to quickly limit the free fall movement of the material placement plate to prevent the material from falling.
It effectively prevents construction raw materials from falling during transportation, ensures the safety of construction personnel and structures, improves construction efficiency, and ensures the normal operation of the equipment after the risk is lifted.
Smart Images
Figure CN120156981A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cranes, and in particular to a crane for building construction with a falling prevention safety mechanism. Background Art
[0002] The lifting machinery used in bridge construction projects can generally be divided into four categories according to their different structures and performances: light and small lifting equipment, bridge-type lifting machinery, boom-type cranes, and cableway cranes. The working characteristic of lifting equipment is intermittent movement, that is, in a working cycle, the corresponding mechanisms for actions such as material taking, transportation, and unloading work alternately. Cranes are increasingly widely developed and used in the market, and are mostly used for hoisting construction raw materials such as steel bars, wooden beams, concrete, steel pipes, etc. for construction. Although the existing tower cranes can basically meet the usage requirements in actual construction, the tower cranes use the lever principle to lift construction raw materials. To ensure that their lifting weight and lifting range meet the usage requirements, the length of the balance arm of the tower crane must be relatively long, resulting in difficulty in setting up perfect protective settings around the lifting operation site. There are potential safety hazards that the lifted construction raw materials may fall and injure construction workers and construction structures during the lifting operation. Especially for small and bulk lifted objects, they shake greatly during transportation and are more likely to have problems such as unhooking and scattering due to shaking. For this reason, we have proposed a crane for building construction with a falling prevention safety mechanism. Summary of the Invention
[0003] The crane for building construction with a falling prevention safety mechanism proposed by the present invention solves the above-mentioned deficiencies in the prior art.
[0004] To achieve the above object, the present invention adopts the following technical solutions: A crane for building construction with a falling prevention safety mechanism includes a first support frame and a second support frame, and further includes: A driving component, arranged on the first support frame and the second support frame, for power output of the crane; A moving and conveying component, arranged between the first support frame and the second support frame, for conveying building construction materials. A traction mechanism is provided between the moving and conveying component and the driving component. The moving and conveying component includes: A material placing plate, arranged between the first support frame and the second support frame, for placing building construction materials; A plurality of guiding plates, arranged on both sides of the material placing plate, for limiting the movement of the material placing plate; A falling prevention mechanism, arranged on one side of one of the guiding plates, for protecting the material placing plate from falling.
[0005] Further, the driving assembly includes hydraulic push rods fixedly connected to the first support frame and the second support frame respectively. A push frame is fixedly connected to the top of the hydraulic push rod. First pulleys are symmetrically and fixedly connected to the push frame. First guide wheels are symmetrically rotated on both sides of the push frame. First limiting wheels are symmetrically rotatably connected to both sides inside the push frame. Second moving openings are symmetrically formed at corresponding positions of the two sides of the push frame for the first limiting wheels. The first limiting wheels are movably sleeved inside the second moving openings. One side of each first limiting wheel abuts against the inner sides of the first support frame and the second support frame respectively.
[0006] Further, moving gaps are respectively provided on the first support frame and the second support frame. The first guide wheels are movably sleeved inside the moving gaps of the first support frame and the second support frame. One side of each first limiting wheel abuts against the inner sides of the first support frame and the second support frame respectively. First moving openings are formed at corresponding positions of the two sides of the push frame for the first limiting wheels. The first limiting wheels are movably sleeved inside the first moving openings.
[0007] Further, the moving and conveying assembly includes towing frames symmetrically and fixedly connected to the top of the material placing plate. A plurality of guide plates are respectively fixed to the outer sides of the towing frames. Second guide wheels are rotatably connected to the outer sides of the guide plates. The second guide wheels are movably sleeved inside the moving gaps. Second limiting wheels are symmetrically rotatably connected to the inner sides of the guide plates. One side of each second limiting wheel abuts against the inner sides of the first support frame and the second support frame respectively. Second moving openings are formed at corresponding positions of the guide plates for the second limiting wheels. The second limiting wheels are movably sleeved inside the second moving openings.
[0008] Further, telescopic guardrails are rotatably connected to both sides of one of the towing frames. A trapezoidal slider is rotatably connected to one end of the telescopic guardrail. Trapezoidal chutes are respectively formed at corresponding positions of the two sides of the towing frame for the trapezoidal slider. The trapezoidal slider is movably sleeved inside the trapezoidal chute. The other end of the telescopic guardrail is clamped with the other towing frame. A plurality of limiting pieces are rotatably connected to the bottom of the telescopic guardrail. Limiting grooves are respectively formed at corresponding positions of the two sides of the top of the material placing plate for the limiting pieces. The limiting pieces are movably sleeved inside the limiting grooves.
[0009] Further, the traction mechanism includes a plurality of first reinforcing plates respectively fixedly connected to one side of the first support frame and the second support frame. A first fixing hook is fixedly connected to one of the first reinforcing plates. Fixing plates are symmetrically and fixedly connected to both sides of the material placing plate. A first traction rope is fixedly connected between the fixing plate and the first fixing hook. The first traction rope is movably wound around the first pulley.
[0010] Further, the traction mechanism further includes second fixed hooks respectively and fixedly connected to the tops of the two traction frames. Third fixed hooks are symmetrically and fixedly connected to the bottoms of the traction frames. A second reinforcement plate is fixedly connected to the tops of the first support frame and the second support frame by bolts. A second pulley is rotatably connected to the bottom of the second reinforcement plate. Third pulleys are fixedly connected to the bottoms of the first support frame and the second support frame. A second traction rope is fixedly connected between the second fixed hook and the third fixed hook, and the second traction rope is respectively wound around the outsides of the second pulley and the third pulley.
[0011] Further, the anti-falling mechanism includes a first connecting rod rotatably connected to one of the guide plates. One end of the first connecting rod is fixedly connected to a worm gear, and the other end of the first connecting rod is fixedly connected to a swing arm. Brake blocks are respectively installed at both ends of the swing arm, and one side of each brake block abuts against the inner sides of the first support frame and the second support frame respectively. A worm is rotatably connected to the guide plate, and one side of the worm is in meshing transmission with the worm gear. One end of the worm is fixedly connected to a first conical wheel.
[0012] Further, a second connecting rod is rotatably connected to the inner side of the guide plate. One end of the second connecting rod is fixedly connected to a gear, and a rack is fixedly connected to the inside of the first support frame corresponding to the gear. One side of the gear is in meshing transmission with the rack. The other end of the second connecting rod is fixedly connected to a second conical wheel. A connecting plate is fixedly connected to one side of the guide plate, and a third connecting rod is movably sleeved on the connecting plate. One end of the third connecting rod is fixedly connected to a third conical wheel, and the outside of the third conical wheel is in meshing transmission with the first conical wheel and the second conical wheel respectively. A first return spring is fixedly connected between one end of the third connecting rod and the connecting plate, and the third connecting rod movably penetrates through the inside of the first return spring.
[0013] Further, an eccentric swing arm is rotatably connected above one side of the guide plate. One end of the eccentric swing arm is fixedly connected to a hammer, and one side of the hammer is indirectly abutted against the third connecting rod. The other end of the eccentric swing arm is fixedly connected to a negative electromagnetic block, and a positive electromagnetic block is fixedly connected to the guide plate corresponding to the negative electromagnetic block. One end of the eccentric swing arm is fixedly connected to a second return spring, and an anti-falling induction block is fixedly connected to one side of the guide plate.
[0014] Compared with the prior art, the beneficial effects of the present invention are: The present invention performs power output and anti-falling protection processing on the device by installing a driving component, a moving and conveying component, a traction mechanism, and an anti-falling mechanism. Among them, the anti-falling mechanism drives the rotation of the worm wheel through the rotation of the worm, and at the same time drives the synchronous rotation of the first connecting rod through the rotation of the worm wheel, and at the same time drives the rotation of the swing arm through the rotation of the first connecting rod. Thus, through the swing of the swing arm, the brake block performs a movement limiting process on the free fall of the material placement plate; Multiple safety protection processes, through the coordinated work of the driving component, the moving and conveying component, the traction mechanism, and the anti-falling mechanism, realize the all-round safety guarantee for the material conveying of the crane. Among them, the anti-falling mechanism can quickly start to limit its movement when the material placement plate suddenly has a free fall, effectively preventing the material from falling and causing safety accidents, and ensuring the safety of construction workers and the safety of construction equipment and materials; In the driving component, the hydraulic push rod pushes the push frame, and cooperates with the first guide wheel, the first limit wheel, and the second guide wheel and the second limit wheel of the moving and conveying component to keep the device stable during operation, ensure the precise movement of the material placement plate, and improve the construction efficiency; The telescopic protective fence can be stretched and clamped between the two traction frames to further prevent the material from falling off the material placement plate and play a secondary protective role for the material; At the same time, after the risk is lifted, the first return spring resets the third connecting rod, the third conical wheel separates from the first conical wheel and the second conical wheel, which does not affect the normal operation of the device, and the second return spring resets the eccentric swing arm to prepare for the next emergency situation and ensure the continuous and stable operation of the device; In summary, the device can not only quickly start to limit its movement when the material placement plate suddenly has a free fall, effectively prevent the material from falling and causing safety accidents, ensure the safety of construction workers and the safety of construction equipment and materials, cooperate with the first guide wheel, the first limit wheel, and the second guide wheel and the second limit wheel of the moving and conveying component to keep the device stable during operation, ensure the precise movement of the material placement plate, and improve the construction efficiency. At the same time, after the risk is lifted, the first return spring resets the third connecting rod, and the second return spring resets the eccentric swing arm to prepare for the next emergency situation and ensure the continuous and stable operation of the device. Description of the Drawings
[0015] Figure 1 It is a schematic diagram of the overall top-down three-dimensional structure of a construction crane with a anti-falling safety mechanism proposed by the present invention; Figure 2 It is a schematic diagram of the overall bottom-up three-dimensional structure of a construction crane with a anti-falling safety mechanism proposed by the present invention; Figure 3 It is a schematic diagram of the overall top-down three-dimensional structure of the moving and conveying component of a construction crane with a anti-falling safety mechanism proposed by the present invention; Figure 4 The first top-down three-dimensional structural schematic diagram of the drive assembly of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 5 The top-down three-dimensional structural schematic diagram of the mobile conveying assembly and the anti-falling mechanism of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 6 The second top-down three-dimensional structural schematic diagram of the drive assembly of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 7 The top-down three-dimensional structural schematic diagram of the rack, the first reinforcement plate and the first fixing hook of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 8 The bottom-up three-dimensional structural schematic diagram of the rack and the second pulley of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 9 The top-down three-dimensional structural schematic diagram of the push frame, the first pulley, the first guide wheel and the first limit wheel of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 10 The top-down three-dimensional structural schematic diagram of the traction frame and the anti-falling mechanism of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 11 The top-down three-dimensional structural schematic diagram of the anti-falling mechanism of a crane for building construction with a fall prevention safety mechanism proposed by the present invention; Figure 12 For a crane for building construction with a fall prevention safety mechanism proposed by the present invention Figure 1 The partial enlarged three-dimensional structural schematic diagram at A in
[0016] In the figure: 1. First support frame; 2. Second support frame; 3. Driving assembly; 301. Hydraulic push rod; 302. Pushing frame; 303. First guide wheel; 304. First limiting wheel; 305. First pulley; 4. Mobile conveying assembly; 401. Material placement plate; 402. Towing frame; 403. Guide plate; 404. Second guide wheel; 405. Second limiting wheel; 406. Second fixing hook; 407. Telescopic protective fence; 408. Limiting piece; 409. Limiting groove; 410. Third fixing hook; 411. Fixing plate; 412. Third pulley; 413. Second pulley; 414. Second towing rope; 415. First towing rope; 5. Anti-falling mechanism; 501. First connecting rod; 502. Swing arm; 503. Brake block; 504. Worm gear; 505. Worm; 506. First conical wheel; 507. Second connecting rod; 508. Gear; 509. Second conical wheel; 510. Third connecting rod; 511. Third conical wheel; 512. Eccentric swing arm; 513. Negative electromagnetic block; 514. Positive electromagnetic block; 515. First return spring; 516. Anti-falling induction block; 517. Rack; 6. First reinforcement plate; 7. First fixing hook. Detailed implementation mode
[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0019] Embodiment, refer to Figures 1-12 : A construction crane with a fall prevention safety mechanism, including a first support frame 1 and a second support frame 2, and further including: a driving assembly 3, a mobile conveying assembly 4 and an anti-falling mechanism 5; A traction mechanism is provided between the mobile conveying assembly 4 and the driving assembly 3. The mobile conveying assembly 4 includes: a material placement plate 401 and a plurality of guide plates 403; The driving component 3 includes hydraulic push rods 301 fixedly connected to the first support frame 1 and the second support frame 2 respectively. A push frame 302 is fixedly connected to the top of the hydraulic push rod 301. First pulleys 305 are symmetrically and fixedly connected to the push frame 302. First guide wheels 303 are symmetrically rotated on both sides of the push frame 302. First limiting wheels 304 are symmetrically rotatably connected to both sides inside the push frame 302. Second moving openings are respectively formed on both sides of the push frame 302 corresponding to the first limiting wheels 304. The first limiting wheels 304 are movably sleeved inside the second moving openings. One side of each first limiting wheel 304 abuts against the inner sides of the first support frame 1 and the second support frame 2 respectively. Moving gaps are respectively provided on the first support frame 1 and the second support frame 2. The first guide wheels 303 are movably sleeved inside the moving gaps of the first support frame 1 and the second support frame 2. One side of each first limiting wheel 304 abuts against the inner sides of the first support frame 1 and the second support frame 2 respectively. First moving openings are formed on both sides of the push frame 302 corresponding to the first limiting wheels 304. The first limiting wheels 304 are movably sleeved inside the first moving openings. When the hydraulic push rod 301 is started, it drives the push frame 302 to move along the first support frame 1 and the second support frame 2 through the first limiting wheels 304 and the first guide wheels 303. While the push frame 302 is moving, it drives the moving conveying component 4 to perform synchronous moving processing.
[0020] In the present invention, the moving conveying component 4 includes traction frames 402 symmetrically and fixedly connected to the top of the material placing plate 401. A plurality of guide plates 403 are respectively fixed to the outside of the traction frames 402. Second guide wheels 404 are rotatably connected to the outside of the guide plates 403. The second guide wheels 404 are movably sleeved inside the moving gaps. Second limiting wheels 405 are symmetrically and rotatably connected to the inner sides of the guide plates 403. One side of each second limiting wheel 405 abuts against the inner sides of the first support frame 1 and the second support frame 2 respectively. Second moving openings are formed on the guide plates 403 corresponding to the second limiting wheels 405. The second limiting wheels 405 are movably sleeved inside the second moving openings.
[0021] In the present invention, telescopic guardrails 407 are respectively rotatably connected to both sides of one of the traction frames 402. One end of the telescopic guardrail 407 is rotatably connected with a trapezoidal slider. Trapezoidal chutes are respectively formed on both sides of the traction frame 402 corresponding to the trapezoidal slider. The trapezoidal slider is movably sleeved inside the trapezoidal chute. The other end of the telescopic guardrail 407 is clamped with the other traction frame 402. A plurality of limiting pieces 408 are rotatably connected to the bottom of the telescopic guardrail 407. Limiting grooves 409 are respectively formed on both sides of the top of the material placing plate 401 corresponding to the limiting pieces 408. The limiting pieces 408 are movably sleeved inside the limiting grooves 409. By stretching the telescopic guardrail 407, one end is clamped with the other traction frame 402, so as to perform anti-falling protection treatment on the materials on the material placing plate 401.
[0022] In the present invention, the traction mechanism includes a plurality of first reinforcing plates 6 fixedly connected to one side of the first support frame 1 and the second support frame 2 respectively. A first fixing hook 7 is fixedly connected to one of the first reinforcing plates 6. Fixing plates 411 are symmetrically and fixedly connected to both sides of the material placing plate 401. A first traction rope 415 is fixedly connected between the fixing plate 411 and the first fixing hook 7. The first traction rope 415 is movably wound around the first pulley 305. The traction mechanism further includes second fixing hooks 406 fixedly connected to the tops of the two traction frames 402 respectively. Third fixing hooks 410 are symmetrically and fixedly connected to the bottoms of the traction frames 402. A second reinforcing plate is fixedly connected to the tops of the first support frame 1 and the second support frame 2 by bolts. A second pulley 413 is rotatably connected to the bottom of the second reinforcing plate. A third pulley 412 is fixedly connected to the bottoms of the first support frame 1 and the second support frame 2. A second traction rope 414 is fixedly connected between the second fixing hook 406 and the third fixing hook 410. The second traction rope 414 is wound around the outer sides of the second pulley 413 and the third pulley 412 respectively. When the pushing frame 302 moves, the fixing plate 411 is driven to move through the first traction rope 415, thereby driving the material placing plate 401 to move.
[0023] In the present invention, the anti-falling mechanism 5 includes a first connecting rod 501 rotatably connected to one of the guide plates 403. One end of the first connecting rod 501 is fixedly connected to a worm gear 504. The other end of the first connecting rod 501 is fixedly connected to a swing arm 502. Brake blocks 503 are respectively installed at both ends of the swing arm 502. One side of each brake block 503 abuts against the inner sides of the first support frame 1 and the second support frame 2. A worm 505 is rotatably connected to the guide plate 403. One side of the worm 505 is in meshing transmission with the worm gear 504. One end of the worm 505 is fixedly connected to a first conical wheel 506. The rotation of the worm 505 drives the worm gear 504 to rotate synchronously. The rotation of the worm gear 504 drives the first connecting rod 501 to rotate synchronously.
[0024] In the present invention, a second connecting rod 507 is rotatably connected to the inner side of the guide plate 403, and one end of the second connecting rod 507 is fixedly connected to a gear 508, and a rack 517 is fixedly connected to the corresponding gear 508 inside the first support frame 1, one side of the gear 508 is meshed with the rack 517 for transmission, and the other end of the second connecting rod 507 is fixedly connected to a second conical wheel 509, and one side of the guide plate 403 is fixedly connected to a connecting plate, and a third connecting rod 510 is movably sleeved on the connecting plate, and one end of the third connecting rod 510 is fixedly connected to a third conical wheel 511, and the outside of the third conical wheel 511 is respectively meshed with the first conical wheel 506 and the second conical wheel 509 for transmission, and a first return spring 515 is fixedly connected between one end of the third connecting rod 510 and the connecting plate, and the third connecting rod 510 movably passes through the interior of the first return spring 515, and the third connecting rod 510 is reset by the first return spring 515 after the anti-fall risk is eliminated.
[0025] In the present invention, an eccentric swing arm 512 is rotatably connected to the upper side of one side of the guide plate 403, one end of the eccentric swing arm 512 is fixedly connected to a knock hammer, one side of the knock hammer is indirectly abutted against the third connecting rod 510, the other end of the eccentric swing arm 512 is fixedly connected to a negative electromagnetic block 513, a positive electromagnetic block 514 is fixedly connected to one side of the guide plate 403 corresponding to the negative electromagnetic block 513, one end of the eccentric swing arm 512 is fixedly connected to a second reset spring, and one side of the guide plate 403 is fixedly connected to an anti-falling sensor block 516, and the state of the material placement plate 401 is monitored in real time through the anti-falling sensor block 516.
[0026] Working principle: When in use, when the anti-falling sensing block 516 monitors the moving state of the material placement plate 401 in real time, when the material placement plate 401 suddenly moves downward in a free fall, the anti-falling sensing block 516 detects that the moving state is abnormal. At the same time, due to the excessively fast free fall speed of the material placement plate 401, the eccentric swing arm 512 swings downward, so that the striking hammer collides with one end of the third connecting rod 510, and at the same time, the positive electromagnetic block 514 and the negative electromagnetic block 513 are released and adsorbed together, so that the eccentric swing arm 512 cannot rebound. At the same time, the third conical wheel 511 is moved to mesh between the first conical wheel 506 and the second conical wheel 509 through the movement of the third connecting rod 510; When the material placement plate 401 descends in free fall, the gear 508 meshes with the rack 517 for transmission. The rotation of the gear 508 drives the synchronous rotation of the second connecting rod 507. The rotation of the second connecting rod 507 drives the rotation of the second conical wheel 509. At the same time, it drives the synchronous rotation of the first conical wheel 506 through the third conical wheel 511. The rotation of the first conical wheel 506 drives the rotation of the worm 505, which meshes with the worm gear 504 for transmission. The rotation of the worm gear 504 drives the rotation of the first connecting rod 501. The rotation of the first connecting rod 501 drives the swing arm 502 to swing, and at the same time makes the brake block 503 abut against the inner side of the first support frame 1 or the second support frame 2, so as to limit the free fall movement of the material placement plate 401; It is worth mentioning that this anti-falling mechanism 5 can be arbitrarily set on a guide plate 403 or on multiple guide plates 403 to provide anti-falling protection for the material placement plate 401. After the risk is removed, the positive electromagnetic block 514 is energized to release the magnetic adsorption between it and the negative electromagnetic block 513. At this time, the first return spring 515 generates a return thrust on the third connecting rod 510, so that the third conical wheel 511 is separated from the first conical wheel 506 and the second conical wheel 509. Thus, when the material placement plate 401 moves up and down normally and the gear 508 meshes with the rack 517, the second connecting rod 507 rotates idly and will not hinder the normal operation of the equipment. At the same time, the second return spring pulls and resets the eccentric swing arm 512 for convenient use in the next emergency.
[0027] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A construction crane with an anti-fall safety mechanism, comprising a first support frame (1) and a second support frame (2), characterized in that: Also includes: A driving assembly (3) is provided on the first support frame (1) and the second support frame (2) and is used for outputting power of the crane; The mobile conveying assembly (4) is disposed between the first support frame (1) and the second support frame (2) and is used for conveying construction materials. A traction mechanism is provided between the mobile conveying assembly (4) and the driving assembly (3). The mobile conveying assembly (4) comprises: A material placement plate (401) is located between the first support frame (1) and the second support frame (2) and is used for placing construction materials; A plurality of guide plates (403) are provided on both sides of the material placement plate (401) and are used for limiting the movement of the material placement plate (401); The anti-fall mechanism (5) is located on one side of one of the guide plates (403) and is used to protect the material placement plate (401) from falling.
2. A construction crane with an anti-fall safety mechanism according to claim 1, characterized in that: The driving assembly (3) comprises a hydraulic push rod (301) fixedly connected to the first support frame (1) and the second support frame (2), respectively; the top of the hydraulic push rod (301) is fixedly connected to a push frame (302), the push frame (302) is symmetrically fixedly connected to a first pulley (305), both sides of the push frame (302) are symmetrically rotated with first guide wheels (303), both sides of the inside of the push frame (302) are symmetrically rotated with first limiting wheels (304), both sides of the push frame (302) are respectively corresponding to the first limiting wheels (304) are provided with second movable openings, the first limiting wheels (304) are movably sleeved inside the second movable opening, and one side of the first limiting wheel (304) is respectively in contact with the inner side of the first support frame (1) and the inner side of the second support frame (2).
3. A construction crane with an anti-fall safety mechanism according to claim 2, characterized in that: The first support frame (1) and the second support frame (2) are respectively provided with movable gaps, the first guide wheel (303) is movably sleeved inside the movable gaps between the first support frame (1) and the second support frame (2), one side of the first limiting wheel (304) is respectively in contact with the inner side of the first support frame (1) and the second support frame (2), and first movable openings are opened on both sides of the pushing frame (302) corresponding to the first limiting wheel (304), and the first limiting wheel (304) is movably sleeved inside the first movable openings.
4. A construction crane with an anti-fall safety mechanism according to claim 3, characterized in that: The mobile conveying assembly (4) comprises a traction frame (402) symmetrically fixedly connected to the top of the material placement plate (401); a plurality of guide plates (403) are respectively fixed to the outer side of the traction frame (402); the outer side of the guide plate (403) is rotatably connected to a second guide wheel (404); the second guide wheel (404) is movably sleeved inside the moving gap; the inner side of the guide plate (403) is symmetrically rotatably connected to a second limiting wheel (405); one side of the second limiting wheel (405) is respectively in contact with the inner side of the first support frame (1) and the inner side of the second support frame (2); a second movable opening is opened on the guide plate (403) corresponding to the second limiting wheel (405); the second limiting wheel (405) is movably sleeved inside the second movable opening.
5. A construction crane with an anti-fall safety mechanism according to claim 4, characterized in that: Telescopic guardrails (407) are rotatably connected to the two sides of one of the traction frames (402), one end of the telescopic guardrail (407) is rotatably connected to a trapezoidal slider, trapezoidal slide grooves are provided on the two sides of the traction frame (402) corresponding to the trapezoidal sliders, the trapezoidal sliders are movably sleeved inside the trapezoidal slide grooves, the other end of the telescopic guardrail (407) is clamped with the other traction frame (402), a plurality of limiting plates (408) are rotatably connected to the bottom of the telescopic guardrail (407), limiting grooves (409) are provided on the two sides of the top of the material placement plate (401) corresponding to the limiting plates (408), and the limiting plates (408) are movably sleeved inside the limiting grooves (409).
6. A construction crane with an anti-fall safety mechanism according to claim 1, characterized in that: The traction mechanism comprises a plurality of first reinforcement plates (6) respectively fixedly connected to one side of the first support frame (1) and the second support frame (2); a first fixing hook (7) is fixedly connected to one of the first reinforcement plates (6); fixing plates (411) are symmetrically fixedly connected to both sides of the material placement plate (401); a first traction rope (415) is fixedly connected between the fixing plate (411) and the first fixing hook (7); and the first traction rope (415) is movably wound around the first pulley (305).
7. A construction crane with an anti-fall safety mechanism according to claim 6, characterized in that: The traction mechanism further comprises a second fixing hook (406) fixedly connected to the tops of the two traction frames (402) respectively; a third fixing hook (410) is symmetrically fixedly connected to the bottom of the traction frame (402); a second reinforcing plate is fixedly connected to the tops of the first support frame (1) and the second support frame (2) by bolts; a second pulley (413) is rotatably connected to the bottom of the second reinforcing plate; a third pulley (412) is fixedly connected to the bottoms of the first support frame (1) and the second support frame (2); a second traction rope (414) is fixedly connected between the second fixing hook (406) and the third fixing hook (410); and the second traction rope (414) is respectively wound around the outside of the second pulley (413) and the third pulley (412).
8. A construction crane with an anti-fall safety mechanism according to claim 1, characterized in that: The anti-fall mechanism (5) comprises a first connecting rod (501) rotatably connected to one of the guide plates (403), one end of the first connecting rod (501) being fixedly connected to a worm wheel (504), the other end of the first connecting rod (501) being fixedly connected to a swing arm (502), brake blocks (503) being respectively mounted at both ends of the swing arm (502), one side of the brake block (503) being respectively in contact with the inner side of the first support frame (1) and the second support frame (2), a worm (505) being rotatably connected to the guide plate (403), one side of the worm (505) being meshed with the worm wheel (504) for transmission, and one end of the worm (505) being fixedly connected to a first conical wheel (506).
9. A construction crane with an anti-fall safety mechanism according to claim 8, characterized in that: The inner side of the guide plate (403) is rotatably connected to a second connecting rod (507), one end of the second connecting rod (507) is fixedly connected to a gear (508), a rack (517) is fixedly connected to the inside of the first support frame (1) at a position corresponding to the gear (508), one side of the gear (508) is meshed with the rack (517) for transmission, the other end of the second connecting rod (507) is fixedly connected to a second conical wheel (509), one side of the guide plate (403) is fixedly connected to a connecting plate, a third connecting rod (510) is movably sleeved on the connecting plate, one end of the third connecting rod (510) is fixedly connected to a third conical wheel (511), the outside of the third conical wheel (511) is respectively meshed with the first conical wheel (506) and the second conical wheel (509) for transmission, a first return spring (515) is fixedly connected between one end of the third connecting rod (510) and the connecting plate, and the third connecting rod (510) movably passes through the inside of the first return spring (515).
10. A construction crane with an anti-fall safety mechanism according to claim 1, characterized in that: An eccentric swing arm (512) is rotatably connected to the upper side of one side of the guide plate (403); a striking hammer is fixedly connected to one end of the eccentric swing arm (512); one side of the striking hammer is indirectly abutted against a third connecting rod (510); the other end of the eccentric swing arm (512) is fixedly connected to a negative electromagnetic block (513); a positive electromagnetic block (514) is fixedly connected to one side of the guide plate (403) corresponding to the negative electromagnetic block (513); a second return spring is fixedly connected to one end of the eccentric swing arm (512); and an anti-falling induction block (516) is fixedly connected to one side of the guide plate (403).