A cast-in-place box girder steel reinforcement framework hoisting device and method

Abstract

The application discloses a cast-in-place box girder steel reinforcement framework hoisting device and method, relates to the field of hoisting devices, and comprises a hoisting crane, a hoisting frame and an operation cabin are movably installed on the hoisting crane, a positive avoidance device is installed on the hoisting crane, the operation cabin is installed on the positive avoidance device, and the positive avoidance device is used for driving the operation cabin to move. It should be noted that, in the application, when the steel reinforcement framework is thrown to the hoisting crane, the steel reinforcement framework is buffered through a buffer top frame, the operation cabin is actively moved to avoid the fallen steel reinforcement framework, the support rotating plate can be driven to rotate to support two supporting wheels on the ground, the problem that the hoisting crane is tilted due to lack of support when the steel reinforcement framework is thrown to the hoisting crane is avoided, the armored box can cover the operation cabin, the problem that the steel reinforcement framework is directly thrown to the operation cabin is avoided, and full protection of the workers is realized.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, and in particular to a hoisting device and method for the reinforcing steel skeleton of a cast-in-place box girder. Background Technology

[0002] Cast-in-place box girder refers to a beam-type load-bearing structure with a box-shaped cross-section, formed by erecting formwork and support systems on-site at the designed location of the bridge or structure, tying steel bars on-site, and pouring concrete on-site. It combines the excellent mechanical properties of box girders with the adaptability advantages of cast-in-place construction and is widely used in various types of bridges, especially continuous beams, rigid frame bridges, curved bridges, variable-width bridges, and large building structures.

[0003] Because the steel reinforcement cage of cast-in-place box girders is usually large and complex, cranes are needed to lift and move it during construction. However, if an accident occurs and the steel reinforcement cage falls and hits the crane, the crane cannot move it quickly and there are no avoidance measures on the crane. Therefore, if the steel reinforcement cage hits the workers in the operating cabin, it will directly cause injury or even death to the workers. In addition, if the crane is only tilted up, the workers will also be injured by the crane overturning. Therefore, the falling steel reinforcement cage can easily threaten the lives of workers operating on the crane. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for hoisting the reinforcing steel cage of a cast-in-place box girder, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hoisting device for the steel reinforcement cage of a cast-in-place box girder includes a crane, on which a lifting frame and an operating cabin are movably mounted;

[0007] The crane is equipped with an active avoidance device, and the operating cabin is mounted on the active avoidance device. The active avoidance device is used to move the operating cabin. The active avoidance device includes an avoidance base, which is mounted on the crane. The operating cabin is slidably mounted on the avoidance base. Two buffer seats are mounted on the avoidance base, and a buffer top frame is slidably mounted inside the buffer seats. Two mounting cavities are opened on the avoidance base, and an avoidance column is rotatably mounted in each of the two mounting cavities. The operating cabin is movably mounted on the two avoidance columns. The rotation of the avoidance columns drives the operating cabin to move laterally. The buffer top frame is driven by the avoidance columns and is used to buffer and protect the operating cabin.

[0008] It also includes an impact support device, which is installed on the bottom side of the crane and is used to provide rotational support for the crane. The impact support device includes two support rotating plates, which are rotatably installed on the bottom side of the crane, and support wheels are rotatably installed on both sides of the support rotating plates.

[0009] It also includes an armor protection device, which is installed on the active avoidance device. The armor protection device is used to protect the operating cabin from rotation. The armor protection device includes an armor box, and sliding rods are movably installed at the four corners of the armor box. The sliding rods are slidably installed on the avoidance base.

[0010] Furthermore, in a preferred embodiment of the present invention, the active avoidance device further includes two avoidance gears, which are respectively mounted on the two avoidance posts;

[0011] An inclined clearance groove is provided on the clearance post, and a clearance slider is slidably installed in the mounting cavity. The clearance slider is movably installed in the clearance groove, and the operating cabin is installed on the clearance slider.

[0012] Furthermore, in a preferred embodiment of the present invention, a clearance rack is slidably mounted on both sides of the clearance base, a clearance gear is mounted on the side of the two clearance posts that are far apart from each other, the two clearance racks mesh with the two clearance gears respectively, and a return spring is installed between the clearance base and the clearance rack.

[0013] Both buffer top frames are equipped with impact pushers, and impact pushers are installed on the impact pushers. The movement of the impact pushers compresses the movement of the avoidance rack frame.

[0014] Furthermore, in a preferred embodiment of the present invention, a buffer groove is provided on the buffer seat, and the buffer top frame is slidably installed in the buffer groove;

[0015] Two protective springs are installed on the inner wall of the buffer slide, and both protective springs are installed on the buffer top frame.

[0016] Furthermore, in a preferred embodiment of the present invention, the impact support device further includes two synchronous rotating shafts, which are respectively mounted on the two support rotating plates;

[0017] Two support seats are rotatably mounted on the synchronous rotating shaft, and both support seats are installed on the bottom side of the crane.

[0018] Furthermore, in a preferred embodiment of the present invention, the support base is provided with an installation groove, the synchronous rotating shaft is rotatably installed in the installation groove, a storage torsion spring is installed on the inner wall of the installation groove, and the storage torsion spring is installed on the synchronous rotating shaft;

[0019] A torsion drive rod is installed at one end of the synchronous rotating shaft, and a synchronous drive frame is slidably installed on the crane. The movement of the synchronous drive frame is used to push the torsion drive rod to rotate.

[0020] A positioning block is installed on the support base, and a positioning groove is provided on the torsion drive rod. The torsion drive rod rotates through the positioning groove and locks onto the positioning block to lock the support plate.

[0021] Furthermore, in a preferred embodiment of the present invention, the armor protection device further includes a blocking strip, and telescopic frames are slidably mounted on both of the two buffer seats. The blocking strip is slidably mounted on the two telescopic frames and is used to block the armor box.

[0022] The blocking bar has a movable groove, and the telescopic frame is slidably installed in the movable groove.

[0023] Furthermore, in a preferred embodiment of the present invention, two follow-up sliding grooves are provided on the avoidance base, a sliding bar is installed on the bottom side of the sliding rod, the sliding bar is slidably installed in the follow-up sliding groove, and the operating cabin is installed on the sliding bar;

[0024] A pull-down spring is installed on the sliding rod, and the pull-down spring is installed on the inner wall of the armored box.

[0025] Furthermore, in a preferred embodiment of the present invention, a rotating retractable rod is rotatably mounted on one side of each of the two buffer seats, and a pusher is mounted on each of the two buffer top frames. The pusher moves to compress the rotating retractable rod to rotate. Two retractable rotating shafts are mounted on the rotating retractable rod, and a retractable groove is provided on the telescopic frame. The retractable rotating shaft is movably mounted in the retractable groove.

[0026] The buffer seat has a spreading groove on one side, and another retractable shaft is rotatably installed in the spreading groove. A spreading torsion spring is installed on the inner wall of the spreading groove, and the spreading torsion spring is installed on the retractable shaft.

[0027] A method for hoisting the reinforcing steel cage of a cast-in-place box girder, which is based on the aforementioned hoisting device for the reinforcing steel cage of a cast-in-place box girder, includes the following steps:

[0028] S1. When the steel reinforcement cage falls and hits any of the buffer top frames, the buffer top frames move within the buffer seats, and the two protective springs are subjected to force. Under the rebound force of the protective springs, the steel reinforcement cage is buffered and initially protected.

[0029] S2. The steel frame crashes into a buffer top frame on either side, causing the buffer top frame to move through the impact pusher, which in turn causes the impact pusher to squeeze and move the avoidance rack frame. The movement of the avoidance rack frame causes the avoidance gear to rotate, which in turn causes the avoidance column to rotate. The rotation of the avoidance column causes the avoidance slider to move through the avoidance pusher groove, which in turn causes the operating cabin to move, allowing the operating cabin to avoid the falling steel frame.

[0030] S3. The buffer top frame moves downward when impacted, which drives the corresponding synchronous drive frame to move. The synchronous drive frame squeezes the two torsion drive rods to rotate. The rotation of the torsion drive rods drives the synchronous rotating shaft to rotate. The rotation of the synchronous rotating shaft drives the support rotating plate to rotate. The rotation of the support rotating plate drives the two support wheels to support the ground.

[0031] S4. The buffer top frame moves down, causing the lower push frame to move. This causes the lower push frame to squeeze and rotate the retractable rod, which in turn causes the telescopic frame to retract. The telescopic frame then causes the blocking strip to retract horizontally, thus causing the blocking strip to detach from the armor box. Under the downward pull of multiple pull springs, the armor box slides on the four sliding rods, covering the operating cabin and protecting it.

[0032] The beneficial effects of the cast-in-place box girder reinforcement cage hoisting device and method proposed in this invention are:

[0033] In this invention, by setting up an active avoidance device, if the steel reinforcement frame falls and crashes into any of the buffer top frames during construction, the buffer top frames will move within the buffer seat, causing the two protective springs to be stressed. Therefore, under the rebound force of the protective springs, the steel reinforcement frame is buffered and initially protected. Furthermore, when one of the buffer top frames on either side moves, the operating cabin will actively move to avoid the falling steel reinforcement frame, preventing the steel reinforcement frame from hitting the operating cabin and threatening the safety of the workers.

[0034] Furthermore, in this invention, by setting up an impact support device, when the buffer top frame is impacted, it drives the synchronous drive frame at the corresponding position to move, so that the support plate rotates and drives the two support wheels to support the ground, thus avoiding the problem of the crane tilting due to lack of support when the steel frame hits the crane, and further ensuring the safety of the crane.

[0035] Furthermore, in this invention, by setting up an armor protection device, when the buffer top frame moves down, it drives the lower push frame to move, causing the telescopic frame to drive the blocking strip to retract horizontally, thereby causing the blocking strip to detach from the armor box. At this time, under the downward pulling force of multiple pull-down springs, the armor box slides on the four sliding rods, covering the operating cabin and preventing the steel frame from directly hitting the operating cabin, thus achieving secondary protection for the operating cabin. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of a cast-in-place box girder steel reinforcement cage hoisting device provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram illustrating the connection between the support rotating plate and the armored box and other structures of a cast-in-place box girder steel reinforcement cage hoisting device according to an embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram illustrating the connection between the buffer top frame and the armored box and other structures of a cast-in-place box girder steel reinforcement cage hoisting device, as provided in an embodiment of the present invention.

[0039] Figure 4 This is a structural diagram illustrating the connection between the impact push rod and the avoidance rack frame of a cast-in-place box girder reinforcement cage hoisting device according to an embodiment of the present invention.

[0040] Figure 5 This is a partial sectional view of the connection between the clearance base and the clearance column and other structures of a cast-in-place box girder reinforcement cage hoisting device provided in an embodiment of the present invention.

[0041] Figure 6 This is a partial sectional view of the connection between the buffer top frame and the buffer seat of a cast-in-place box girder steel reinforcement cage hoisting device provided in an embodiment of the present invention.

[0042] Figure 7 This is a partial sectional view of the connection between the clearance base and the clearance rack frame of the cast-in-place box girder reinforcement cage hoisting device provided in an embodiment of the present invention.

[0043] Figure 8 This is a schematic diagram illustrating the connection between the support rotating plate and support wheels, etc., of a cast-in-place box girder reinforcement cage hoisting device according to an embodiment of the present invention.

[0044] Figure 9 This is a cross-sectional structural diagram showing the connection between the support rotating plate and the support seat of a cast-in-place box girder reinforcement cage hoisting device according to an embodiment of the present invention.

[0045] Figure 10 This is a cross-sectional structural schematic diagram of the torsion drive rod of a cast-in-place box girder reinforcement cage hoisting device provided in an embodiment of the present invention;

[0046] Figure 11 This is a partial structural diagram illustrating the connection between the rotating retractable rod and the lower pusher frame of a cast-in-place box girder reinforcement cage hoisting device according to an embodiment of the present invention.

[0047] Figure 12 This is a partial sectional view of the connection between the rotating retraction rod and the retraction shaft of a cast-in-place box girder reinforcement cage hoisting device provided in an embodiment of the present invention.

[0048] Figure 13 This is a partial sectional view of the connection between the armored box and the sliding rod and other structures of a cast-in-place box girder steel reinforcement cage hoisting device provided in an embodiment of the present invention.

[0049] Figure 14 This is a partial structural diagram illustrating the connection between the sliding rod and sliding bar of a cast-in-place box girder reinforcement cage hoisting device, as provided in an embodiment of the present invention.

[0050] In the diagram: 1-Crane; 2-Lifting frame; 3-Operator's cabin; 4-Active avoidance device; 401-Avoidance base; 402-Buffer top frame; 403-Mounting cavity; 404-Avoidance column; 405-Avoidance push groove; 406-Avoidance slider; 407-Buffer seat; 408-Buffer slide groove; 409-Impact push frame; 410-Impact push rod; 411-Avoidance rack frame; 412-Avoidance gear; 413-Protective spring; 414-Return spring; 5-Impact support device; 501-Support rotating plate; 502-Support wheel; 503-Support seat; 5 04-Synchronous rotating shaft; 505-Mounting slot; 506-Storing torsion spring; 507-Torsion drive rod; 508-Synchronous drive frame; 509-Positioning block; 510-Positioning slot; 6-Armor protection device; 601-Armor box; 602-Sliding rod; 603-Pull-down spring; 604-Following slide; 605-Blocking strip; 606-Telescopic frame; 607-Moving slot; 608-Rotating retractable rod; 609-Retractable rotating shaft; 610-Retractable slide; 611-Push-down frame; 612-Opening rotating slot; 613-Opening torsion spring; 614-Sliding bar. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0054] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0055] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0056] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] Please refer to the attached instruction manual. Figures 1-14 The present invention provides a cast-in-place box girder steel reinforcement cage hoisting device, which includes a crane 1, a lifting frame 2 and an operating cabin 3 movably mounted on the crane 1; in addition, an active avoidance device 4 is installed on the crane 1, the operating cabin 3 is installed on the active avoidance device 4, and the active avoidance device 4 is used to drive the operating cabin 3 to move.

[0058] Specifically, the active avoidance device 4 includes an avoidance base 401, which is mounted on the crane 1. The operating cabin 3 is slidably mounted on the avoidance base 401. Two buffer seats 407 are mounted on the avoidance base 401. A buffer top frame 402 is slidably mounted in the buffer seat 407. Two mounting cavities 403 are opened on the avoidance base 401. A avoidance column 404 is rotatably mounted in each of the two mounting cavities 403. The operating cabin 3 is movably mounted on the two avoidance columns 404. The rotation of the avoidance columns 404 drives the operating cabin 3 to move laterally. The buffer top frame 402 is connected to the avoidance column 404 through a transmission. The buffer top frame 402 is used to buffer and protect the operating cabin 3. It should be noted that in this embodiment of the invention, when the steel reinforcement frame falls on any of the buffer top frames 402, the buffer top frames 402 move within the buffer seat 407, and the two protective springs 413 are subjected to force. Therefore, under the rebound force of the protective springs 413, the steel reinforcement frame is buffered and initially protected. At the same time, the operating cabin 3 moves, so that the operating cabin 3 avoids the falling steel reinforcement frame and prevents the steel reinforcement frame from hitting the operating cabin 3 and threatening the safety of the staff.

[0059] More specifically, in this embodiment of the invention, an impact support device 5 is also included. The impact support device 5 is installed on the bottom side of the crane 1 and is used to provide rotational support for the crane 1. The impact support device 5 includes two support rotating plates 501, which are rotatably installed on the bottom side of the crane 1. Support wheels 502 are rotatably installed on both sides of the support rotating plates 501. It should be noted that in this embodiment of the invention, when the crane 1 is impacted, the support rotating plates 501 rotate, causing the two support wheels 502 to support the crane on the ground, providing sufficient support for the crane 1. This prevents the crane 1 from tilting due to lack of support when the steel frame hits it, further ensuring the safety of the crane 1.

[0060] More specifically, in this embodiment of the invention, an armored protection device 6 is also included. The armored protection device 6 is mounted on the active avoidance device 4 and is used to protect the operating cabin 3 from rotation. The armored protection device 6 includes an armored box 601, with sliding rods 602 movably mounted at each of the four corners of the armored box 601. The sliding rods 602 are slidably mounted on the avoidance base 401. It should be noted that in this embodiment of the invention, when the crane 1 is impacted, the armored box 601 slides on the four sliding rods 602, covering the operating cabin 3 and preventing the steel frame from directly impacting the operating cabin 3, thus achieving sufficient protection for the operating cabin 3.

[0061] Please refer to the instruction manual attached. Figures 2-7Furthermore, the active avoidance device 4 of the cast-in-place box girder steel reinforcement cage hoisting device provided in this embodiment of the invention further includes two avoidance gears 412, which are respectively installed on two avoidance columns 404; the avoidance column 404 is provided with an inclined avoidance push groove 405, and an avoidance slider 406 is slidably installed in the mounting cavity 403. The avoidance slider 406 is movably installed in the avoidance push groove 405, and the operating cabin 3 is installed on the avoidance slider 406. It should be noted that, in this embodiment of the invention, when the avoidance rack frame 411 moves and drives the avoidance gears 412 to rotate, the avoidance gears 412 drive the avoidance columns 404 to rotate. The rotation of the avoidance columns 404 drives the avoidance slider 406 to move through the avoidance push groove 405, so that the avoidance slider 406 drives the operating cabin 3 to move, thereby achieving the purpose of horizontal movement of the operating cabin 3.

[0062] More specifically, in this embodiment of the invention, both sides of the avoidance base 401 are slidably mounted with avoidance rack brackets 411, and both sides of the two avoidance columns 404 that are far apart from each other are mounted with avoidance gears 412. The two avoidance rack brackets 411 mesh with the two avoidance gears 412 respectively, and a return spring 414 is installed between the avoidance base 401 and the avoidance rack brackets 411.

[0063] In addition, impact pushers 409 are installed on both buffer top frames 402, and impact pushers 410 are installed on the impact pushers 409. The impact pushers 410 move to compress and avoid the movement of the rack frame 411. It should be noted that, in this embodiment of the invention, when one of the buffer top frames 402 moves on either side, the impact pushers 409 drive the impact pushers 410 to move. The impact pushers 410 compress and avoid the movement of the rack frame 411, and the return spring 414 is stressed. The movement of the rack frame 411 drives the avoidance gear 412 to rotate, which in turn drives the avoidance column 404 to rotate. This, in turn, causes the avoidance slider 406 to move the operating cabin 3, thereby achieving the purpose of automatic movement of the operating cabin 3 for avoidance.

[0064] Please continue to refer to the instruction manual appendix. Figures 2-7 More specifically, in this embodiment of the invention, a buffer groove 408 is provided on the buffer seat 407, and a buffer top frame 402 is slidably installed in the buffer groove 408; two protective springs 413 are installed on the inner wall of the buffer groove 408, and both protective springs 413 are installed on the buffer top frame 402. It should be noted that, in this embodiment of the invention, when the steel reinforcement cage strikes any one of the buffer top frames 402, the buffer top frame 402 moves within the buffer seat 407, and the two protective springs 413 are subjected to force. Therefore, under the rebound force of the protective springs 413, the steel reinforcement cage is buffered, thereby achieving the purpose of protecting the crane 1.

[0065] Please refer to the instruction manual attached. Figures 2-3 and Figures 8-10Furthermore, the cast-in-place box girder steel reinforcement cage hoisting device provided in this embodiment of the invention includes an impact support device 5 that further comprises two synchronous rotating shafts 504, which are respectively mounted on two support rotating plates 501. In addition, two support seats 503 are rotatably mounted on the synchronous rotating shafts 504, and both support seats 503 are mounted on the bottom side of the crane 1. It should be noted that in this embodiment of the invention, when the buffer top frame 402 moves downward, it drives the corresponding synchronous drive frame 508 to move, causing the synchronous drive frame 508 to press against the two torsion drive rods 507 to rotate. The rotation of the torsion drive rods 507 drives the synchronous rotating shafts 504 to rotate, causing the synchronous rotating shafts 504 to drive the support rotating plates 501 to rotate. The rotation of the support rotating plates 501 drives the two support wheels 502 to support the ground, achieving the purpose of automatic rotation of the support rotating plates 501.

[0066] More specifically, in this embodiment of the invention, a mounting groove 505 is provided on the support base 503, and a synchronous rotating shaft 504 is rotatably installed in the mounting groove 505. A torsion spring 506 is installed on the inner wall of the mounting groove 505, and the torsion spring 506 is installed on the synchronous rotating shaft 504. A torsion drive rod 507 is installed at one end of the synchronous rotating shaft 504, and a synchronous drive frame 508 is slidably installed on the crane 1. The synchronous drive frame 508 moves to push the torsion drive rod 507 to rotate.

[0067] Furthermore, a positioning block 509 is installed on the support base 503, and a positioning groove 510 is provided on the torsion drive rod 507. The torsion drive rod 507 rotates and is engaged with the positioning block 509 through the positioning groove 510, which is used to lock the support rotating plate 501. It should be noted that, in this embodiment of the invention, when the torsion drive rod 507 is pushed to rotate, it drives the synchronous rotating shaft 504 to rotate, causing the synchronous rotating shaft 504 to rotate within the two mounting grooves 505, and causing the two storage torsion springs 506 to be stressed. The rotation of the synchronous rotating shaft 504 drives the support rotating plate 501 to rotate, and the rotation of the support rotating plate 501 drives the two support wheels 502 to be supported on the ground. The rotation of the torsion drive rod 507 is engaged with the positioning block 509 through the positioning groove 510, so that the support rotating plate 501 is fixed, thereby providing sufficient support for the crane 1.

[0068] Please refer to the instruction manual attached. Figures 2-3 and Figures 11-14 Furthermore, the cast-in-place box girder steel reinforcement cage hoisting device provided in this embodiment of the invention includes an armor protection device 6 that also includes a blocking strip 605. Telescopic frames 606 are slidably installed on both buffer seats 407. The blocking strip 605 is slidably installed on the two telescopic frames 606 and is used to block the armor box 601.

[0069] Furthermore, the blocking strip 605 has a movable groove 607, and the telescopic frame 606 is slidably installed in the movable groove 607. It should be noted that, in this embodiment of the invention, when the blocking strip 605 detaches from the armor box 601, under the downward pull of multiple pull-down springs 603, the armor box 601 slides on the four sliding rods 602, covering the operating cabin 3 and achieving the purpose of protecting the operating cabin 3.

[0070] More specifically, in this embodiment of the invention, the avoidance base 401 has two follower grooves 604, and a sliding strip 614 is installed on the bottom side of the sliding rod 602. The sliding strip 614 is slidably installed in the follower groove 604, and the operating cabin 3 is installed on the sliding strip 614. In addition, a pull-down spring 603 is installed on the sliding rod 602, and the pull-down spring 603 is installed on the inner wall of the armor box 601. It should be noted that, in this embodiment of the invention, when the operating cabin 3 moves, it drives the sliding strip 614 to slide horizontally in the follower groove 604, thereby causing the sliding strip 614 to drive the armor box 601 to move with the operating cabin 3 via the sliding rod 602.

[0071] Please continue to refer to the instruction manual appendix. Figures 2-3 and Figures 11-14 More specifically, in this embodiment of the invention, a rotating retractable rod 608 is rotatably mounted on one side of each of the two buffer seats 407, and a lower pusher 611 is mounted on each of the two buffer top frames 402. The lower pusher 611 moves to compress the rotating retractable rod 608 to rotate. Two retractable rotating shafts 609 are mounted on the rotating retractable rod 608. A retractable groove 610 is provided on the telescopic frame 606, and the retractable rotating shafts 609 are movably mounted in the retractable groove 610.

[0072] Furthermore, a spreading groove 612 is provided on one side of the buffer seat 407, and another retractable shaft 609 is rotatably installed in the spreading groove 612. A spreading torsion spring 613 is installed on the inner wall of the spreading groove 612, and the spreading torsion spring 613 is installed on the retractable shaft 609. It should be noted that, in this embodiment of the invention, when the buffer top frame 402 moves downward, it drives the lower push frame 611 to move, causing the lower push frame 611 to squeeze the rotating retractable rod 608 to rotate. The rotating retractable rod 608 rotates in the spreading groove 612 through a retractable shaft 609, and causes the spreading torsion spring 613 to be stressed. At the same time, the rotating retractable rod 608 drives the telescopic frame 606 to retract through the other retractable shaft 609, and the retractable shaft 609 slides in the retractable slide groove 610, causing the telescopic frame 606 to drive the blocking strip 605 to retract horizontally, thereby causing the blocking strip 605 to disengage from the armor box 601, achieving the purpose of automatically unlocking the armor box 601.

[0073] In summary, the working principle of the cast-in-place box girder reinforcement cage hoisting device provided in this embodiment of the invention, that is, the hoisting method corresponding to the cast-in-place box girder reinforcement cage hoisting device of this embodiment of the invention, is as follows:

[0074] When construction workers operate the hoist 2 via the control cabin 3 to lift the steel reinforcement cage, if the steel reinforcement cage falls and hits any of the buffer top frames 402, the buffer top frame 402 will move within the buffer seat 407, causing the two protective springs 413 to be stressed. Therefore, the rebound force of the protective springs 413 will buffer the steel reinforcement cage, providing initial protection. Furthermore, when one of the buffer top frames 402 moves on either side, the impact pusher 409 will drive the impact push rod 410 to move. The impact push rod 410 will compress and move the rack frame 411, causing the return spring 414 to be stressed and avoid the rack. The movement of the frame 411 causes the avoidance gear 412 to rotate, which in turn causes the avoidance column 404 to rotate. The rotation of the avoidance column 404 causes the avoidance slider 406 to move via the avoidance push groove 405. The avoidance slider 406 causes the operating cabin 3 to move, so that the operating cabin 3 avoids the falling steel frame and prevents the steel frame from hitting the operating cabin 3 and threatening the safety of the staff. In addition, if the steel frame falls in the middle, the two buffer top frames 402 set at different heights can make one of the buffer top frames 402 contact the steel frame and cause the operating cabin 3 to move, which can also avoid the steel frame.

[0075] Furthermore, when the buffer top frame 402 moves downward, it drives the corresponding synchronous drive frame 508 to move, causing the synchronous drive frame 508 to press the two torsion drive rods 507 to rotate. The rotation of the torsion drive rods 507 drives the synchronous rotating shaft 504 to rotate, causing the synchronous rotating shaft 504 to rotate within the two mounting slots 505, and causing the two storage torsion springs 506 to be stressed. The rotation of the synchronous rotating shaft 504 drives the support rotating plate 501 to rotate, and the rotation of the support rotating plate 501 drives the two support wheels 502 to be supported on the ground, thus preventing the crane 1 from tilting due to lack of support when the steel frame hits it, and further ensuring the safety of the crane 1.

[0076] Furthermore, when the buffer top frame 402 moves downward, it drives the lower push frame 611 to move, causing the lower push frame 611 to compress and rotate the retractable rod 608. The retractable rod 608 rotates within the expansion groove 612 via a retractable pivot 609, causing the expansion torsion spring 613 to be stressed. At the same time, the retractable rod 608 drives the telescopic frame 606 to retract via another retractable pivot 609, and the retractable pivot 609 slides within the retractable slide groove 610, causing the telescopic frame 606 to drive the blocking strip 605 to retract horizontally, thereby causing the blocking strip 605 to detach from the armor box 601. Simultaneously, under the downward pull of multiple pull-down springs 603, the armor box 601 slides on the four sliding rods 602, covering the operating cabin 3 and preventing the steel frame from directly hitting the operating cabin 3, thus achieving secondary protection for the operating cabin 3.

[0077] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hoisting device for the reinforcing steel cage of a cast-in-place box girder, characterized in that, It includes a crane, on which a lifting frame and an operating cabin are movably mounted; The crane is equipped with an active avoidance device, and the operating cabin is mounted on the active avoidance device. The active avoidance device is used to move the operating cabin. The active avoidance device includes an avoidance base, which is mounted on the crane. The operating cabin is slidably mounted on the avoidance base. Two buffer seats are mounted on the avoidance base, and a buffer top frame is slidably mounted inside the buffer seats. Two mounting cavities are opened on the avoidance base, and an avoidance column is rotatably mounted in each of the two mounting cavities. The operating cabin is movably mounted on the two avoidance columns. The rotation of the avoidance columns drives the operating cabin to move laterally. The buffer top frame is driven by the avoidance columns and is used to buffer and protect the operating cabin. It also includes an impact support device, which is installed on the bottom side of the crane and is used to provide rotational support for the crane. The impact support device includes two support rotating plates, which are rotatably installed on the bottom side of the crane, and support wheels are rotatably installed on both sides of the support rotating plates. It also includes an armor protection device, which is installed on the active avoidance device. The armor protection device is used to protect the operating cabin from rotation. The armor protection device includes an armor box, and sliding rods are movably installed at the four corners of the armor box. The sliding rods are slidably installed on the avoidance base.

2. The cast-in-place box girder reinforcement cage hoisting device according to claim 1, characterized in that, The active avoidance device also includes two avoidance gears, which are respectively mounted on the two avoidance posts; An inclined clearance groove is provided on the clearance post, and a clearance slider is slidably installed in the mounting cavity. The clearance slider is movably installed in the clearance groove, and the operating cabin is installed on the clearance slider.

3. The cast-in-place box girder reinforcement cage hoisting device according to claim 2, characterized in that, Both sides of the avoidance base are slidably mounted with avoidance rack brackets, and avoidance gears are installed on the sides of the two avoidance columns that are far apart from each other. The two avoidance rack brackets are respectively meshed with the two avoidance gears, and a return spring is installed between the avoidance base and the avoidance rack brackets. Both buffer top frames are equipped with impact pushers, and impact pushers are installed on the impact pushers. The movement of the impact pushers compresses the movement of the avoidance rack frame.

4. The cast-in-place box girder reinforcement cage hoisting device according to claim 3, characterized in that, The buffer seat is provided with a buffer groove, and the buffer top frame is slidably installed in the buffer groove; Two protective springs are installed on the inner wall of the buffer slide, and both protective springs are installed on the buffer top frame.

5. The cast-in-place box girder reinforcement cage hoisting device according to claim 1, characterized in that, The impact support device also includes two synchronous rotating shafts, which are respectively mounted on the two support rotating plates; Two support seats are rotatably mounted on the synchronous rotating shaft, and both support seats are installed on the bottom side of the crane.

6. The cast-in-place box girder reinforcement cage hoisting device according to claim 5, characterized in that, The support base is provided with a mounting groove, the synchronous rotating shaft is rotatably installed in the mounting groove, and a storage torsion spring is installed on the inner wall of the mounting groove. The storage torsion spring is installed on the synchronous rotating shaft. A torsion drive rod is installed at one end of the synchronous rotating shaft, and a synchronous drive frame is slidably installed on the crane. The movement of the synchronous drive frame is used to push the torsion drive rod to rotate. A positioning block is installed on the support base, and a positioning groove is provided on the torsion drive rod. The torsion drive rod rotates through the positioning groove and locks onto the positioning block to lock the support plate.

7. The cast-in-place box girder reinforcement cage hoisting device according to claim 1, characterized in that, The armor protection device also includes a blocking strip, and telescopic frames are slidably installed on both of the two buffer seats. The blocking strip is slidably installed on the two telescopic frames and is used to block the armor box. The blocking bar has a movable groove, and the telescopic frame is slidably installed in the movable groove.

8. The cast-in-place box girder reinforcement cage hoisting device according to claim 7, characterized in that, The avoidance base has two follow-up sliding grooves, and a sliding bar is installed on the bottom side of the sliding rod. The sliding bar is slidably installed in the follow-up sliding groove, and the operating cabin is installed on the sliding bar. A pull-down spring is installed on the sliding rod, and the pull-down spring is installed on the inner wall of the armored box.

9. A cast-in-place box girder reinforcement cage hoisting device according to claim 8, characterized in that, A rotating retractable rod is rotatably mounted on one side of each of the two buffer seats, and a pusher is mounted on each of the two buffer top frames. The pusher moves to compress the rotating retractable rod to rotate. Two retractable shafts are mounted on the rotating retractable rod, and a retractable groove is provided on the telescopic frame. The retractable shaft is movably mounted in the retractable groove. The buffer seat has a spreading groove on one side, and another retractable shaft is rotatably installed in the spreading groove. A spreading torsion spring is installed on the inner wall of the spreading groove, and the spreading torsion spring is installed on the retractable shaft.

10. A method for hoisting the reinforcing steel cage of a cast-in-place box girder, wherein the method is carried out using the hoisting device for the reinforcing steel cage of a cast-in-place box girder according to any one of claims 1-9, characterized in that, Includes the following steps: S1. When the steel reinforcement cage falls and hits any of the buffer top frames, the buffer top frames move within the buffer seats, and the two protective springs are subjected to force. Under the rebound force of the protective springs, the steel reinforcement cage is buffered and initially protected. S2. The steel frame crashes into a buffer top frame on either side, causing the buffer top frame to move through the impact pusher, which in turn causes the impact pusher to squeeze and move the avoidance rack frame. The movement of the avoidance rack frame causes the avoidance gear to rotate, which in turn causes the avoidance column to rotate. The rotation of the avoidance column causes the avoidance slider to move through the avoidance pusher groove, which in turn causes the operating cabin to move, allowing the operating cabin to avoid the falling steel frame. S3. The buffer top frame moves downward when impacted, which drives the corresponding synchronous drive frame to move. The synchronous drive frame squeezes the two torsion drive rods to rotate. The rotation of the torsion drive rods drives the synchronous rotating shaft to rotate. The rotation of the synchronous rotating shaft drives the support rotating plate to rotate. The rotation of the support rotating plate drives the two support wheels to support the ground. S4. The buffer top frame moves down, causing the lower push frame to move. This causes the lower push frame to squeeze and rotate the retractable rod, which in turn causes the telescopic frame to retract. The telescopic frame then causes the blocking strip to retract horizontally, thus causing the blocking strip to detach from the armor box. Under the downward pull of multiple pull springs, the armor box slides on the four sliding rods, covering the operating cabin and protecting it.

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