Cantilever I-shaped steel dismounting and hoisting device and method

Abstract

The invention discloses a cantilever I-shaped steel dismantling and hoisting device and method, and relates to the field of scaffold dismantling. The cantilever I-shaped steel dismounting lifting and releasing device comprises a support connected to a building, a winding roller connected to the support, a lifting and releasing rope with one end wound around and connected to the winding roller, an anti-falling alarm connected to the support and an I-shaped steel fixing mechanism, and the lifting and releasing rope penetrates through the anti-falling alarm in a sliding mode and then is connected with the I-shaped steel fixing mechanism. When the sliding speed of the hoisting rope exceeds the first preset speed and the second preset speed, the anti-falling alarm gives an alarm sound and locks the hoisting rope; the I-shaped steel fixing mechanism comprises two I-shaped steel clamping blocks which can move in the direction close to each other or away from each other to clamp or loosen I-shaped steel, one I-shaped steel clamping block is connected with a clamping bolt, and the clamping bolt moves when rotating so that the two I-shaped steel clamping blocks can keep away from each other or move in the direction close to each other. The cantilever I-shaped steel dismounting and hoisting device and method can stably, reliably and safely clamp and fix the I-shaped steel and lower the I-shaped steel to the ground.

Description

Technical Field

[0001] The present application relates to the field of scaffold dismantling, and in particular, to a cantilever I-beam dismantling and hoisting device and method. Background Art

[0002] External cantilever I-beam scaffolding has many advantages and is widely used in high-rise building construction. However, the removal of the bottom layer of cantilever I-beams with embedded bolts is a difficult problem in the construction process. When the ground-type scaffolding is removed before the cantilever I-beams, especially when the cantilever I-beams are removed to the bottom layer, the workers do not have the ground-type scaffolding as a foothold for construction, which makes the removal operation extremely inconvenient and increases the potential safety hazards in construction.

[0003] At present, in the case of removing the last layer of cantilever I-beams after the floor-standing scaffolding has been removed, the construction site needs to re-erect the floor-standing scaffolding or use a lifting platform to remove the bottom layer of cantilever I-beams; re-erecting the floor-standing scaffolding increases construction time and expenses, and increases construction costs; the lifting platform has strict requirements on the flatness of the site, and it takes time and effort to repair the road surface to meet the standards, which increases construction costs. In addition, the use of the lifting platform for the building's inner corners and the area under the bay window is also restricted.

[0004] Therefore, a cantilever I-beam dismantling and lifting device and method are needed to ensure the safe dismantling and lifting operation of the cantilever I-beam. Summary of the invention

[0005] The purpose of the present application is to provide a cantilever I-beam dismantling and hoisting device and method, which can stably and reliably clamp and fix the I-beam and lower it to the ground, ensure the safe dismantling and hoisting operation of the I-beam, and can alarm and stop the lowering when the falling speed is too fast during the lowering process.

[0006] This application is implemented as follows:

[0007] The present application provides a cantilever I-beam dismantling and hanging device, which comprises:

[0008] A bracket for detachably connecting to a building;

[0009] A winding roller is rotatably connected to the bracket;

[0010] A hanging rope, one end of which is wound around and connected to the winding roller;

[0011] An anti-fall alarm is connected to the bracket. The hanging rope slides through the anti-fall alarm. When the sliding speed of the hanging rope exceeds a first preset speed, the anti-fall alarm sounds an alarm. When the sliding speed of the hanging rope exceeds a second preset speed, the anti-fall alarm locks the position of the hanging rope.

[0012] The I-beam fixing mechanism comprises two I-beam clamping blocks which can move towards or away from each other to clamp or release the I-beam, one I-beam clamping block is connected with a rotatable clamping bolt, the clamping bolt is configured to move axially when rotating so that the two I-beam clamping blocks can be kept away from or moved towards each other, and the other end of the lifting rope is connected with an I-beam clamping block.

[0013] In some optional implementation schemes, the anti-fall alarm includes an anti-fall alarm box, two sleeves and a rotating shaft respectively connected to the anti-fall alarm box, the lifting rope passes through the anti-fall alarm box and is wrapped around the rotating shaft, the two ends of the rotating shaft are respectively rotatably passed through and connected to the two sleeves, the inner wall of one sleeve is provided with a plurality of clickers arranged at intervals along its circumference; the outer wall of one end of the sleeve corresponding to the clicker extending into the rotating shaft is connected to a first connecting seat, the first connecting seat is connected to a pendulum through a first limit spring, and one end of the pendulum is hinged to the rotating shaft; when the sliding speed of the lifting rope exceeds the first preset speed, it drives the rotating shaft to rotate, so that the rotating shaft drives the pendulum to rotate, compresses the first limit spring and hits each clicker in turn to make an alarm sound.

[0014] In some optional embodiments, the inner wall of the other sleeve is provided with a plurality of slots arranged at intervals along its circumference; the outer wall of one end of the sleeve corresponding to the slot where the rotating shaft extends is connected to a second connecting seat, the second connecting seat is connected to a claw via a second limiting spring, one end of the claw is hinged to the rotating shaft, and when the sliding speed of the lifting rope exceeds the second preset speed, the rotating shaft is driven to rotate, so that the rotating shaft drives the claw to rotate, compresses the second limiting spring and engages in a slot to lock the position of the lifting rope.

[0015] In some optional embodiments, a spiral groove for accommodating and limiting the position of the hanging rope is provided on the rotating shaft.

[0016] In some optional embodiments, a sliding cavity and a slider that can move along the sliding cavity are provided inside the I-beam clamping block connected to the clamping bolt, and the slider is connected to at least one connecting rod that slides through the sliding cavity to connect to another I-beam clamping block and at least one reset spring that passes through the sliding cavity to connect to another I-beam clamping block; when the two I-beam clamping blocks move toward or away from each other to clamp or release the I-beam, the connecting rod drives the slider to move along the sliding cavity between the first station and the second station; the reset spring is used to drive the slider located at the second station to move along the sliding cavity to the first station for reset; a clamping hole is provided on the slider; when the two I-beam clamping blocks move away from each other to cause the slider to move to the second station, the clamping bolt moves axially to connect or disengage from the clamping hole when it rotates.

[0017] In some optional embodiments, a locking hole is provided on the slider; when the two I-beam clamping blocks move toward each other to move the slider to the first position, the clamping bolt rotates and moves axially to connect or disengage from the locking hole to limit the position of the slider.

[0018] In some optional embodiments, at least one I-beam clamping block is threadedly connected to a locking bolt, and the locking bolt is configured to move axially when rotating to press or stop pressing the clamped I-beam.

[0019] In some optional implementation schemes, the bracket is connected to a counterweight block, and the counterweight block and the anti-fall alarm are respectively arranged on both sides of the winding roller.

[0020] In some optional embodiments, a winding motor for driving the winding roller to rotate is also included.

[0021] The present application also provides a method for dismantling and hanging a cantilevered I-beam, which is performed using the above-mentioned cantilevered I-beam dismantling and hanging device, and comprises the following steps:

[0022] Connect the bracket of the cantilever I-beam dismantling and lifting device to the building above the I-beam to be dismantled;

[0023] Move the two I-beam clamping blocks away from each other and then rotate the clamping bolts to move the clamping bolts axially so that the two I-beam clamping blocks remain away from each other;

[0024] Control the winding roller to rotate and release the lifting rope, so that the lifting rope lowers the two connected I-beam clamping blocks to the I-beam to be removed, and use a torque wrench to rotate the clamping bolt so that the clamping bolt moves axially when rotating so that the two I-beam clamping blocks move toward each other to clamp the I-beam;

[0025] Remove the I-beam;

[0026] The winding roller is controlled to rotate and release the lifting rope, so that the lifting rope connects the two I-beam clamping blocks and the two I-beam clamping blocks clamp the I-beam and place it on the ground.

[0027] The beneficial effects of the present application are as follows: the cantilever I-beam dismantling and lifting device provided in the present application comprises a bracket for detachably connecting to a building, a winding roller rotatably connected to the bracket, a lifting rope with one end wound around and connected to the winding roller, an anti-fall alarm connected to the bracket, and an I-beam fixing mechanism, the lifting rope slides through the anti-fall alarm, and when the sliding speed of the lifting rope exceeds a first preset speed, the anti-fall alarm sounds an alarm, and when the sliding speed of the lifting rope exceeds a second preset speed, the anti-fall alarm locks the position of the lifting rope; the I-beam fixing mechanism comprises two I-beam clamping blocks that can move toward or away from each other to clamp or loosen the I-beam, one I-beam clamping block is connected to a rotatable clamping bolt, and the clamping bolt is configured to move axially when rotating to keep the two I-beam clamping blocks away from each other or moving toward each other, and the other end of the lifting rope is connected to an I-beam clamping block. The cantilever I-beam dismantling and hoisting device and method provided in the present application can stably and reliably clamp and fix the I-beam and lower it to the ground, ensuring the safe dismantling and hoisting operations of the I-beam, and can alarm and stop the lowering if the falling speed is too fast during the lowering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the partial structure of the cantilever I-beam dismantling and lifting device provided in an embodiment of the present application when the I-beam is connected to a building for dismantling and lifting;

[0030] Figure 2 A schematic diagram of the partial structure of the cantilever I-beam dismantling and hanging device provided in an embodiment of the present application when it is installed on a building for dismantling and hanging I-beams;

[0031] Figure 3 A schematic diagram of the local structure of the cantilever I-beam removal and lifting device provided in an embodiment of the present application when the lifting rope passes through the anti-fall alarm box;

[0032] Figure 4 A schematic diagram of the structure of the connection between the rotating shaft and the sleeve in the cantilever I-beam removal and lifting device provided in an embodiment of the present application;

[0033] Figure 5 For along Figure 4 Schematic diagram of the cross-sectional structure of the AA section line;

[0034] Figure 6 For along Figure 4Schematic diagram of the cross-sectional structure of the middle BB section line;

[0035] Figure 7 A schematic diagram of the structure of an I-beam fixing mechanism in a cantilever I-beam removal and lifting device provided in an embodiment of the present application;

[0036] Figure 8 A schematic diagram of a partial cross-section structure of the cantilever I-beam dismantling and hanging device provided in an embodiment of the present application, in which two I-beam clamping blocks of an I-beam fixing mechanism move away from each other until the slider is located at the second working position;

[0037] Fig. 9 A schematic diagram of a partial cross-sectional structure of the two I-beam clamping blocks of the I-beam fixing mechanism in the cantilever I-beam dismantling and hanging device provided in an embodiment of the present application when the slider is located at the first working position in a direction toward each other;

[0038] Fig.10 A schematic diagram of the structure of a slider and a clamping bolt of an I-beam fixing mechanism in a cantilever I-beam removal and lifting device provided in an embodiment of the present application;

[0039] Fig.11 A schematic structural diagram of a cantilever I-beam dismantling and lifting device provided in another embodiment of the present application, in which the L-shaped pendulum is omitted and the first connecting seat is directly connected to the hammer head through the first limit spring.

[0040] In the figure: 100, bracket; 110, winding roller; 120, hanging rope; 130, counterweight; 140, winding motor; 150, counterweight frame; 160, winding roller shaft; 200, anti-fall alarm; 210, anti-fall alarm box; 220, sleeve; 230, rotating shaft; 240, clicker; 250, slot; 260, first connecting seat; 261, first limit spring; 262, pendulum; 263, hammer head; 270, second Connecting seat; 271, second limit spring; 272, claw; 280, spiral groove; 300, I-beam fixing mechanism; 310, I-beam clamping block; 320, clamping bolt; 330, sliding cavity; 340, slider; 341, clamping hole; 342, locking hole; 350, connecting rod; 360, return spring; 370, locking bolt; 380, lifting ring; 390, bolt hole; 400, building; 410, I-beam. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] The features and performance of the cantilever I-beam dismantling and hanging device and method of the present application are further described in detail below in conjunction with the embodiments.

[0049] The present application provides a cantilever I-beam dismantling and lifting device for Figure 1 The I-beam 410 connected to the building 400 is dismantled and hoisted. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, it includes a bracket 100 whose bottom is used to be detachably connected to a building 400 by bolts, a winding roller 110 rotatably connected to the bracket 100 by a winding roller shaft 160, a winding motor 140 connected to the bracket 100, a hanging rope 120 with one end wound around and connected to the winding roller 110, an anti-falling alarm 200 connected to the bracket 100, and an I-beam fixing mechanism 300 connected to the other end of the hanging rope 120, the output shaft of the winding motor 140 is coaxially connected to the winding roller 110 to drive the winding roller 110 to rotate, the bracket 100 is also connected to a counterweight frame 150, a detachable counterweight block 130 is connected to the counterweight frame 150 by bolts, and the counterweight block 130 and the anti-falling alarm 200 are respectively arranged on both sides of the winding roller 110.

[0050] The anti-fall alarm 200 includes an anti-fall alarm box 210, two sleeves 220 and a rotating shaft 230 respectively connected to the two ends of the anti-fall alarm box 210, the two ends of the rotating shaft 230 respectively rotatably pass through and are connected to the two sleeves 220, the hanging rope 120 passes through the anti-fall alarm box 210 and is wound around the rotating shaft 230, and the rotating shaft 230 is provided with a spiral groove 280 for accommodating and limiting the position of the hanging rope 120; the inner wall of a sleeve 220 is provided with six sounding pieces 240 arranged at intervals along its circumference, and the rotating shaft 230 is provided with a spiral groove 280 for accommodating and limiting the position of the hanging rope 120; the inner wall of a sleeve 220 is provided with six sounding pieces 240 arranged at intervals along its circumference, and the rotating shaft 230 is provided with a spiral groove 280 for accommodating and limiting the position of the hanging rope 120; the inner wall of a sleeve 220 is provided with six sounding pieces 240 arranged at intervals along the ... The outer wall of one end of the sleeve 220 corresponding to the clicker 240 is connected to a first connecting seat 260, and the first connecting seat 260 is connected to an L-shaped pendulum 262 through a first limit spring 261. One end of the pendulum 262 connected to the first limit spring 261 is hinged to the rotating shaft 230; when the sliding speed of the lifting rope 120 exceeds the first preset speed, it drives the rotating shaft 230 to rotate, so that the rotating shaft 230 drives the pendulum 262 to rotate away from the end of the rotating shaft 230, compressing the first limit spring 261 and hitting each clicker 240 in turn to issue an alarm sound.

[0051] The inner wall of another sleeve 220 is provided with fifteen slots 250 arranged at intervals along its circumference. The outer wall of one end of the sleeve 220 corresponding to the rotating shaft 230 extending into the slot 250 is connected to a second connecting seat 270. The second connecting seat 270 is connected to an S-shaped claw 272 through a second limiting spring 271. The claw 272 is connected to one end of the second limiting spring 271 and is hinged to the rotating shaft 230; when the sliding speed of the hoisting rope 120 exceeds the second preset speed, it drives the rotating shaft 230 to rotate, so that the rotating shaft 230 drives the claw 272 to rotate away from one end of the rotating shaft 230 to compress the second limiting spring 271 and engage in a slot 250 to lock the position of the rotating shaft 230 and the hoisting rope 120.

[0052] The I-beam fixing mechanism 300 includes two [-shaped I-beam clamping blocks 310 that can move toward or away from each other. When the two I-beam clamping blocks 310 move toward or away from each other, they clamp or release the I-beam; a sliding cavity 330 and a slider 340 that can move along the sliding cavity 330 are provided in one I-beam clamping block 310, and the slider 340 is connected to two connecting rods 350 that slide through the sliding cavity 330 and connect to the other I-beam clamping block 310 and a return spring 360 that slides through the sliding cavity 330 and connects to the other I-beam clamping block 310. The I-beam clamping block 310 is provided with openings for the connecting rod 350 and the return spring 360 to pass through respectively. When the two I-beam clamping blocks 310 move toward or away from each other, the slider 340 is driven along the sliding cavity 330 by the connecting rod 350. The sliding cavity 330 moves between the first station and the second station, and the reset spring 360 is used to drive the slider 340 located at the second station to move along the sliding cavity 330 to the first station for reset; the slider 340 is provided with a clamping hole 341 and a locking hole 342, and the I-beam clamping block 310 provided with the sliding cavity 330 is connected with a clamping bolt 320 and a lifting ring 380 for connecting with the lifting rope 120; when the slider 340 moves to the first station, the clamping bolt 320 moves axially to connect or disengage from the locking hole 342 to limit the position of the slider 340 so that the two I-beam clamping blocks 310 remain close to each other; when the slider 340 moves to the second station, the clamping bolt 320 moves axially to connect or disengage from the clamping hole 341 so that the two I-beam clamping blocks 310 remain away from each other or move toward each other. The two I-beam clamping blocks 310 are respectively connected with a locking bolt 370 through a bolt hole 390 . When the locking bolt 370 rotates, it moves axially to press or stop pressing the clamped I-beam 410 .

[0053] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the embodiment of the present application also provides a method for dismantling and hanging a cantilevered I-beam, which is performed using the above-mentioned cantilevered I-beam dismantling and hanging device, and includes the following steps:

[0054] Step 1: Connect the bracket 100 of the cantilever I-beam dismantling and hanging device to the building 400 located above the I-beam 410 to be dismantled by bolts, and then fix the counterweight 130 to the counterweight frame 150 by bolts. The counterweight 130 is used to improve the stability of the bracket 100 to prevent one end of the bracket 100 from overturning due to excessive force during the operation;

[0055] Step 2, move the two I-beam clamping blocks 310 away from each other, the I-beam clamping blocks 310 drive the slider 340 to move to the second station along the sliding cavity 330 through the connecting rod 350, and the slider 340 stretches the reset spring 360, then rotate the clamping bolt 320, so that the clamping bolt 320 moves down along the axial direction and is inserted into and connected to the clamping hole 341 to keep the two I-beam clamping blocks 310 away from each other, move the lifting rope 120 of the cantilever I-beam removal and lifting device away from the winding roller 110, and connect one end to the lifting ring 380 on the I-beam clamping block 310, so that the lifting rope 120 hangs the two I-beam clamping blocks 310 above the I-beam 410 to be removed;

[0056] Step 3: Control the winding motor 140 to start driving the winding roller 110 to rotate and release the hanging rope 120, so that the hanging rope 120 lowers the two connected I-beam clamping blocks 310 to the I-beam to be removed, and use a torque wrench to rotate the clamping bolt 320, so that the clamping bolt 320 moves axially and rises when rotating, disengages from the clamping hole 341, and stops to limit the position of the slider 340, and the stretched reset spring 360 resets and drives the slider 340 to move along the sliding cavity 330 to the first working position and pushes the two working positions. The I-beam clamping blocks 310 move toward each other to clamp the I-beam 410, and the torque wrench is used to re-rotate the clamping bolts 320 to move down in the axial direction. The locking holes 342 connected to the slider 340 limit the position of the slider 340 to keep the two I-beam clamping blocks 310 close to each other and stably clamp the I-beam 410. The torque wrench is used to rotate the two locking bolts 370 respectively, so that the two locking bolts 370 are respectively moved down in the axial direction to press the clamped I-beam 410 to fix it;

[0057] Step 4: Remove the I-beam 410 from the building 400;

[0058] Step 5, control the winding motor 140 to start driving the winding roller 110 to rotate and further release the hanging rope 120, so that the hanging rope 120 lowers the two connected I-beam clamping blocks 310 and the I-beam 410 clamped by the two I-beam clamping blocks 310 to the ground. During the lowering process, the hanging rope 120 continuously slides through the anti-falling alarm box 210 of the anti-falling alarm 200 and drives the wound rotating shaft 230 to rotate clockwise. When the rotating shaft 230 rotates, it drives the first connecting seat 260 connected at one end to rotate along Figure 5 The second connecting seat 270 connected to the other end rotates clockwise and drives the second connecting seat 270 connected to the other end to rotate clockwise. Figure 6The swing arm 230 rotates clockwise, and the pendulum 262 and the claw 272 respectively hinged at both ends of the swing arm 230 rotate with the swing arm 230. When the lowering speed of the hanging rope 120, that is, the sliding speed, is less than the first preset speed, the hanging rope 120 drives the swing arm 230 and its hinged pendulum 262 and the claw 272 to rotate, and cannot push the corresponding first limit spring 261 and the second limit spring 271 to compress. At this time, the pendulum 262 cannot contact the clicker 240 provided on the inner wall of the corresponding sleeve 220, and the claw 272 cannot contact the slot 250 provided on the inner wall of the corresponding sleeve 220. When the sliding speed of the hanging rope 120 is greater than the first preset speed and less than the second preset speed, the hanging rope 120 drives the swing arm 230 to rotate clockwise, so that the hinged pendulum 262 moves along the swing arm 230. Figure 5 The first limit spring 261 is compressed by rotating the pendulum 262 counterclockwise to compress the corresponding first limit spring 261, so that the end of the pendulum 262 away from the rotating shaft 230 rotates with the rotating shaft 230 rotating clockwise to hit each sounder 240 in turn to sound an alarm, prompting the operator to lower the speed too fast. At this time, the claw 272 still cannot compress the corresponding second limit spring 271. When the sliding speed of the hanging rope 120 is greater than the second preset speed, the hanging rope 120 drives the rotating shaft 230 along the Figure 6 When the clockwise rotation is performed, the hinged claw 272 rotates counterclockwise to compress the corresponding second limit spring 271, so that the end of the claw 272 away from the rotating shaft 230 is engaged with a slot 250 provided on the inner wall of the corresponding sleeve 220 when the rotating shaft 230 rotates clockwise to lock the position of the rotating shaft 230, thereby locking the position of the lifting rope 120, thereby preventing the lifting rope 120 from lowering the I-beam 410 clamped by the two I-beam clamping blocks 310 too quickly to cause a safety hazard.

[0059] When the lifting rope 120 lowers the two connected I-beam clamping blocks 310 and the I-beam 410 clamped by the two I-beam clamping blocks 310 to the ground, the ground workers use a wrench to rotate the two locking bolts 370 respectively, so that the two locking bolts 370 respectively move up in the axial direction to stop pressing the clamped I-beam 410 to release the fixation, and use the wrench to rotate the clamping bolts 320 again to move up in the axial direction to disengage the locking holes 342 on the slider 340 to stop limiting the position of the slider 340, so that the two I-beam clamping blocks 310 can be moved in a direction away from each other to stop clamping the I-beam 410, and the I-beam 410 is removed to complete the dismantling and lifting operation.

[0060] The cantilever I-beam dismantling and hoisting device and method provided in the embodiment of the present application, by setting a bracket 100 connected to a rotatable winding roller 110 to wind up the hoisting rope 120 connected to the I-beam fixing mechanism 300 for clamping the I-beam 410, can use the I-beam fixing mechanism 300 to remotely clamp the I-beam 410 at a certain distance, and after the I-beam 410 is separated from the building, the hoisting rope 120 is released by the winding roller 110 and stably lowered to the ground, thereby facilitating, quickly and safely performing the dismantling and hoisting operation of the I-beam 410 in sight, and does not require workers to work in mid-air. At the same time, when the hoisting rope 120 is released and the I-beam fixing mechanism 300 clamps and fixes the I-beam 410, the anti-fall alarm 200 set on the bracket 100 can monitor the lowering speed of the hoisting rope 120 in real time, and when the lowering speed of the hoisting rope 120 exceeds the first preset speed and the second preset speed, an alarm prompt and the position of the hoisting rope 120 are respectively locked, thereby ensuring the safe operation under the I-beam 410.

[0061] In other optional embodiments, such as Fig.11 As shown, the L-shaped pendulum 262 can also be omitted, and the first connecting seat 260 can be directly connected to the hammer head 263 through the first limit spring 261; when the sliding speed of the lifting rope 120 exceeds the first preset speed, the rotating shaft 230 is driven to rotate, so that the rotating shaft 230 drives the hammer head 263 to rotate and stretch the first limit spring 261 and hit each clicker 240 in turn to issue an alarm sound.

[0062] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A cantilever I-beam dismantling and hanging device, characterized in that: It includes: A bracket for detachably connecting to a building; A winding roller rotatably connected to the bracket; A hanging rope, one end of which is wound around and connected to the winding roller; an anti-fall alarm connected to the bracket, the hoisting rope slides through the anti-fall alarm, when the sliding speed of the hoisting rope exceeds a first preset speed, the anti-fall alarm emits an alarm sound, and when the sliding speed of the hoisting rope exceeds a second preset speed, the anti-fall alarm locks the position of the hoisting rope; The I-beam fixing mechanism comprises two I-beam clamping blocks which can move towards or away from each other to clamp or release the I-beam, one of the I-beam clamping blocks is connected with a rotatable clamping bolt, and the clamping bolt is configured to move axially when rotating so that the two I-beam clamping blocks can be kept away from each other or moved towards each other, and the other end of the hoisting rope is connected to one of the I-beam clamping blocks.

2. The cantilever I-beam dismantling and hanging device according to claim 1 is characterized in that: The anti-fall alarm device includes an anti-fall alarm box, two sleeves and a rotating shaft respectively connected to the anti-fall alarm box, the lifting rope passes through the anti-fall alarm box and is wound around the rotating shaft, the two ends of the rotating shaft are respectively rotatably passed through and connected to the two sleeves, the inner wall of one sleeve is provided with a plurality of clickers arranged at intervals along its circumference; the rotating shaft extends into the clicker and the outer wall of one end of the sleeve corresponding to the clicker is connected to a first connecting seat, the first connecting seat is connected to a pendulum through a first limit spring, and one end of the pendulum is hinged to the rotating shaft; when the sliding speed of the lifting rope exceeds the first preset speed, it drives the rotating shaft to rotate, so that the rotating shaft drives the pendulum to rotate, compresses the first limit spring and hits each of the clickers in turn to emit an alarm sound.

3. The cantilever I-beam dismantling and hanging device according to claim 2 is characterized in that: The inner wall of the other sleeve is provided with a plurality of slots arranged at intervals along its circumference; the outer wall of one end of the sleeve corresponding to the rotating shaft extending into the slot is connected to a second connecting seat, and the second connecting seat is connected to a claw through a second limiting spring, and one end of the claw is hinged to the rotating shaft. When the sliding speed of the hoisting rope exceeds the second preset speed, the rotating shaft is driven to rotate, so that the rotating shaft drives the claw to rotate, compresses the second limiting spring and engages in a slot to lock the position of the hoisting rope.

4. The cantilever I-beam dismantling and hanging device according to claim 2 is characterized in that: The rotating shaft is provided with a spiral groove for accommodating and limiting the position of the hanging rope.

5. The cantilever I-beam dismantling and hanging device according to claim 1 is characterized in that: The I-beam clamping block connected to the clamping bolt is provided with a sliding cavity and a slider that can move along the sliding cavity, and the slider is connected with at least one connecting rod that slides through the sliding cavity and connects to another I-beam clamping block and at least one reset spring that penetrates the sliding cavity and connects to another I-beam clamping block; when the two I-beam clamping blocks move toward or away from each other to clamp or release the I-beam, the connecting rod drives the slider to move along the sliding cavity between the first station and the second station; the reset spring is used to drive the slider located at the second station to move along the sliding cavity to the first station to reset; a clamping hole is provided on the slider; when the two I-beam clamping blocks move away from each other to cause the slider to move to the second station, the clamping bolt moves axially when rotating to connect or disengage from the clamping hole.

6. The cantilever I-beam dismantling and hanging device according to claim 5 is characterized in that: The slider is provided with a locking hole; when the two I-beam clamping blocks move toward each other to move the slider to the first position, the clamping bolt rotates and moves axially to connect or disengage from the locking hole to limit the position of the slider.

7. The cantilever I-beam dismantling and hanging device according to claim 1 is characterized in that: At least one of the I-beam clamping blocks is threadedly connected to a locking bolt, and the locking bolt is configured to move axially when rotating to press or stop pressing the clamped I-beam.

8. The cantilever I-beam dismantling and hanging device according to claim 1 is characterized in that: The bracket is connected with a counterweight block, and the counterweight block and the anti-fall alarm are respectively arranged on both sides of the winding roller.

9. The cantilever I-beam dismantling and hanging device according to claim 1 is characterized in that: It also includes a winding motor for driving the winding roller to rotate.

10. A method for dismantling and hanging cantilevered I-beams, characterized in that: The method is carried out using the cantilever I-beam dismantling and hanging device as claimed in any one of claims 1 to 9, and comprises the following steps: Connect the bracket of the cantilever I-beam dismantling and lifting device to the building above the I-beam to be dismantled; After moving the two I-beam clamping blocks away from each other, rotate the clamping bolt to move the clamping bolt axially so that the two I-beam clamping blocks are kept away from each other; Control the winding roller to rotate and release the lifting rope, so that the lifting rope lowers the two connected I-beam clamping blocks to the I-beam to be removed, and use a torque wrench to rotate the clamping bolt so that the clamping bolt moves axially when rotating so that the two I-beam clamping blocks move toward each other to clamp the I-beam; removing the I-beam; The winding roller is controlled to rotate and release the hanging rope, so that the hanging rope connects the two I-beam clamping blocks and the two I-beam clamping blocks clamp the I-beam and place it on the ground.

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