Bailey truss platform steel plate dismantling and hoisting device and hoisting method thereof

Abstract

The invention discloses a bailey truss platform steel plate dismantling and hoisting device and a hoisting method thereof, and relates to the field of construction tools. The device comprises a fixed supporting track, a position adjusting mechanism and an adjustable lifting appliance, the fixed supporting track is connected to a lifting ring at the bottom of a top structural plate, the position adjusting mechanism is slidably connected to the fixed supporting track, the adjustable lifting appliance is fixedly connected to the bottom of the position adjusting mechanism and used for hanging a bailey beam, and the position adjusting mechanism comprises a lifting rod and a lifting rod. The adjustable lifting appliance comprises a long lifting rod and an adjustable lifting hook lock, the long lifting rod is used for supporting the bailey beam, and the adjustable lifting hook lock and the bailey beam are fixed and obliquely tensioned. According to the lifting device, the bailey beam can be moved up and down in the vertical direction, the bailey beam can also be moved in the horizontal direction, the lifting device does not need to be additionally provided with a conveying trolley, and meanwhile the bailey beam can be rapidly conveyed.

Description

Technical Field

[0001] The invention relates to the technical field of construction tools, in particular to a Bailey frame platform steel plate removal and lifting device and a lifting method thereof. Background Art

[0002] In the construction process of some engineering buildings, some large steel frames are often needed for auxiliary support and as a base for construction and construction. Such large supporting structures need to be dismantled after the main building is completed. Since such supporting structures are heavy and large in size, it is difficult to dismantle and install them.

[0003] Bailey beam, also known as assembled highway steel bridge or specifically its main load-bearing truss, is a truss assembled with Bailey frames. Bailey beams are generally removed from the load-bearing beams by crane. Before the Bailey beams are transported to the load-bearing beams, the existing method is to lift the Bailey beams by manual hoists, then place them on a trolley and transport them to the edge of the load-bearing beams before being lifted down by a crane.

[0004] Since the manual hoist can only lift the Bailey beam, and the lifting process is likely to cause the Bailey beam to shake, which makes it easy for safety accidents to occur during lifting. Since the manual hoist can only lift and lower the Bailey beam, an additional transfer trolley is required to transport it to the edge of the load-bearing beam. The steps are cumbersome and the trolley is prone to deviate from the direction or overturn when moving on the load-bearing beam, resulting in a low safety factor and prone to safety accidents. In view of the above situation, the present invention provides a Bailey frame platform steel plate removal and lifting device and a lifting method thereof to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a Bailey frame platform steel plate dismantling and lifting device and a lifting method thereof, which solves the problem that a manual hoist can only lift the Bailey beam, and the Bailey beam is likely to shake during the lifting process, which makes it easy for safety accidents to occur during the lifting. In addition, since the manual hoist can only lift and lower the Bailey beam, an additional transfer trolley is required to transport it to the edge of the load-bearing beam. The steps are cumbersome and the trolley is likely to deviate from the direction or overturn when moving on the load-bearing beam, resulting in a low safety factor and the problem of safety accidents being prone to occur.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a Bailey frame platform steel plate dismantling and lifting device and a lifting method thereof, comprising a fixed support rail, the fixed support rail is connected to a lifting ring at the bottom of the top structure plate, a position adjustment mechanism, the position adjustment mechanism is slidably connected to the fixed support rail, an adjustable sling, the adjustable sling is fixedly connected to the bottom of the position adjustment mechanism, the adjustable sling is used to mount the Bailey beam, wherein the position adjustment mechanism comprises a supporting slider, the supporting slider is used to drive the adjustable sling to move in the horizontal direction, a manual hoist, the manual hoist is used to drive the adjustable sling to move in the vertical direction, the adjustable sling comprises a long suspension rod, the long suspension rod is used to support the Bailey beam, an adjustable suspension hook lock, the adjustable suspension hook lock is fixed to the Bailey beam and is diagonally tightened.

[0007] Preferably, a type of fixed hook is provided on the top of the fixed support rail, a connection port is opened on the top of the fixed support rail, support fixing blocks are fixedly connected on both sides of the fixed support rail, a support adjustment threaded rod is arranged in the support fixing block, a long slide is opened in the fixed support rail, and a servo motor is fixedly connected to one end of the long slide.

[0008] Preferably, the type A fixing hook is fixedly connected in the connecting port, a threaded through hole is opened in the supporting fixing block, the supporting adjustment threaded rod is threadedly connected in the threaded through hole, the supporting adjustment threaded rod includes a supporting pad block, the supporting pad block is used to abut against the bottom of the top structure plate, a rotating handle, the rotating handle is used to rotate the supporting adjustment threaded rod, a long lead screw is rotatably connected in the long slide, and one end of the long lead screw is fixedly connected to the power output end of the servo motor.

[0009] Preferably, a threaded channel is provided at the top of the support slider, a long slide groove is provided inside the support slider, a fixed hanging block is fixedly connected to the bottom end of the support slider, the threaded channel is threadedly connected to the long screw rod, the support slider is slidably connected in the long slide groove, and the fixed hanging block is used to connect to the manual hoist.

[0010] Preferably, the top of the manual hoist is fixedly connected with a second type of fixed hook, the bottom of the manual hoist is provided with a hoist bottom hook, a chain is connected between the manual hoist and the hoist bottom hook, and the second type of fixed hook is fixedly connected to the fixed hanging block.

[0011] Preferably, the top end of the long suspension rod is fixedly connected with a hanging block, a double-headed fixing bolt is arranged in the hanging block, a fixing through hole is opened at the bottom end of the long suspension rod, and the hanging block is fixedly connected to the hook at the bottom of the hoist by the double-headed fixing bolt.

[0012] Preferably, the adjustable lifting hook lock includes a connecting component, an intermediate connecting block, an upper clamping groove is opened at the top of the intermediate connecting block, a lower clamping groove is opened at the bottom of the intermediate connecting block, the upper clamping groove is fixedly connected in the fixed through hole through the connecting component, and a sling, and the sling is rotatably connected in the lower clamping groove.

[0013] Preferably, the sling includes a rotating connecting plate, which is rotatably connected in the lower clamping groove, a long lifting rope, one end of which is fixedly connected to the rotating connecting plate, and a circular lifting head, the other end of which is fixedly connected to the circular lifting head, and the circular lifting head is fixedly connected to the Bailey beam through a wire rope shackle.

[0014] Preferably, the connecting assembly includes an elongated oval block and a connecting and fixing rod. The connecting and fixing rod is provided with two groups. The two groups of connecting and fixing rods are fixedly connected to the elongated oval block. The connecting and fixing rod is movably clamped in the upper clamping groove and the fixed through hole. A clamping groove and a buckle are provided at the end of the connecting and fixing rod. The buckle is movably clamped in the clamping groove.

[0015] Preferably, step 1, splicing and installing the lifting device: transport the two sets of fixed support rails, position adjustment mechanisms and adjustable lifting equipment parts to the work site for assembly, and then assemble them on the load-bearing beams on both sides. First, connect the fixed support rails with the lifting ring at the bottom of the top structure plate through a type of fixed hook and support it through the support adjustment threaded rod, and then assemble the remaining parts together in turn. Step 2, connection between the lifting device and the Bailey frame: fix the circular lifting head to the two ends of the Bailey beam to be lifted and unloaded through the wire rope shackle The two sets of lifting devices make a total of four long lifting ropes present an inverted triangle shape tilted inward when the whole is lifted. If the distance between the Bailey beam and the long lifting rope is too far, it can be changed by adjusting the adjustable lifting hook lock in the fixed position of the long lifting rod. Step three, the movement and preliminary lifting of the Bailey beam are completed: After completing step two, the worker pulls up the Bailey beam by pulling the manual hoist, and then driven by the servo motor, the support slider moves to the edge of the load-bearing beam and lowers the Bailey beam to the load-bearing beam through the manual hoist, waiting for the crane to make the final lifting.

[0016] The present invention discloses a Bailey frame platform steel plate removal and lifting device and a lifting method thereof, which have the following beneficial effects:

[0017] The Bailey frame platform steel plate removal lifting device and lifting method thereof, by setting a fixed support track and a position adjustment mechanism, enables the lifting device to not only move the Bailey beam in the vertical direction up and down, but also move the Bailey beam horizontally, so that the lifting device does not need to be additionally provided with a transport trolley, and can quickly transport the Bailey beam, saving many cumbersome steps;

[0018] The Bailey frame platform steel plate removal and lifting device and lifting method thereof, by setting an adjustable lifting device, can achieve a good lifting position for Bailey beams of different sizes. The inverted triangle-shaped lifting between four sets of long lifting ropes and the Bailey beam is ensured, so that the Bailey beam will not shake violently from side to side when lifted into the air, avoiding safety hazards. The device moves automatically throughout the whole process, and no manual pushing by workers is required, thereby ensuring the safety of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the fixed support track of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall structure of the position adjustment mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall structure of the adjustable hanger of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed support track of the present invention;

[0025] Figure 6 This is a schematic diagram of the overall structure of the supporting slider of the present invention;

[0026] Figure 7 This is a schematic diagram of the overall structure of the manual hoist of the present invention;

[0027] Figure 8 It is a schematic diagram of the overall structure of the long suspension rod of the present invention;

[0028] Fig. 9 This is a schematic diagram of the overall structure of the adjustable lifting hook lock of the present invention;

[0029] Fig.10 This is a schematic diagram of the adjustable lifting hook lock explosion structure of the present invention;

[0030] Fig.11 It is a schematic diagram of the overall structure of the sling of the present invention.

[0031] In the figure: 1. Fixed support rail; 11. Type I fixed hook; 12. Connection port; 13. Support fixed block; 131. Threaded through hole; 14. Support adjustment threaded rod; 141. Support pad; 142. Rotating handle; 15. Long slideway; 151. Long screw rod; 16. Servo motor; 2. Position adjustment mechanism; 21. Support slider; 211. Threaded channel; 212. Long slideway; 213. Fixed hanging block; 22. Manual hoist; 221. Type II fixed hook; 222. Chain; 223 , hook at the bottom of the hoist; 3, adjustable lifting device; 31, long lifting rod; 311, upper lifting block; 312, double-headed fixing bolts; 313, fixing through holes; 32, adjustable lifting hook lock; 321, connecting assembly; 3211, long round block; 3212, connecting fixing rod; 3213, slot; 3214, buckle; 322, middle connecting block; 3221, upper clamping slot; 3222, lower clamping slot; 323, lifting rope; 3231, rotating connecting plate; 3232, long lifting rope; 3233, round lifting head. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The embodiment of the present application provides a Bailey frame platform steel plate dismantling and lifting device and a lifting method thereof, which solves the problem that a manual hoist can only lift the Bailey beam, and the Bailey beam is likely to shake during the lifting process, which makes it easy for safety accidents to occur during the lifting. In addition, since the manual hoist can only lift and lower the Bailey beam, an additional transfer trolley is required to transport it to the edge of the load-bearing beam. The steps are cumbersome and the trolley is likely to deviate from the direction or overturn when moving on the load-bearing beam, resulting in a low safety factor and the problem of safety accidents being prone to occur.

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] The embodiment of the invention discloses a Bailey frame platform steel plate removal and lifting device and a lifting method thereof.

[0036] Embodiment 1

[0037] According to the attached Figure 1-7As shown, it includes a fixed support rail 1, which is connected to the lifting ring at the bottom of the top structural plate, a position adjustment mechanism 2, which is slidably connected to the fixed support rail 1, and an adjustable sling 3, which is fixedly connected to the bottom of the position adjustment mechanism 2. The adjustable sling 3 is used to mount the Bailey beam, wherein the position adjustment mechanism 2 includes a support slider 21, which is used to drive the adjustable sling 3 to move in the horizontal direction, and a manual hoist 22, which is used to drive the adjustable sling 3 to move in the vertical direction. When in use, the Bailey beam is fixed to the adjustable sling 3, and then it is displaced under the drive of the position adjustment mechanism 2 to complete the initial lifting.

[0038] A type of fixed hook 11 is arranged on the top of the fixed support rail 1, a connection port 12 is opened on the top of the fixed support rail 1, support fixing blocks 13 are fixedly connected on both sides of the fixed support rail 1, a support adjustment threaded rod 14 is arranged in the support fixing block 13, a long slide 15 is opened in the fixed support rail 1, a servo motor 16 is fixedly connected to one end of the long slide 15, a type of fixed hook 11 is fixedly connected in the connection port 12, a threaded through hole 131 is opened in the support fixing block 13, and the support adjustment threaded rod 14 is threadedly connected to the threaded through hole In the hole 131, the support adjustment threaded rod 14 includes a support pad 141, which is used to abut against the bottom of the top structural plate, a rotating handle 142, and the rotating handle 142 is used to rotate the support adjustment threaded rod 14. A long screw rod 151 is rotatably connected in the long slide 15, and one end of the long screw rod 151 is fixedly connected to the power output end of the servo motor 16. The support adjustment threaded rod 14 is used to support the fixed support rail 1 when it is fixed to the lifting ring at the bottom of the top structural plate to prevent a safety accident in which one end is lifted up and falls off the lifting ring.

[0039] A threaded channel 211 is provided at the top of the support slider 21, a long slide groove 212 is provided in the support slider 21, a fixed hanging block 213 is fixedly connected to the bottom of the support slider 21, the threaded channel 211 is threadedly connected to the long screw rod 151, the support slider 21 is slidably connected in the long slideway 15, the fixed hanging block 213 is used to connect with the manual hoist 22, a second type of fixed hook 221 is fixedly connected to the top of the manual hoist 22, a hoist bottom hook 223 is provided at the bottom of the manual hoist 22, a chain 222 is connected between the manual hoist 22 and the hoist bottom hook 223, the second type of fixed hook 221 is fixedly connected to the fixed hanging block 213, the support slider 21 is used to drive the Bailey beam to move horizontally, and the manual hoist 22 is used to drive the Bailey beam to move vertically.

[0040] Embodiment 2

[0041] According to the attached Figure 1 , 4As shown in 8-11, it includes a fixed support rail 1, which is connected to the lifting ring at the bottom of the top structural plate, a position adjustment mechanism 2, which is slidably connected to the fixed support rail 1, and an adjustable sling 3, which is fixedly connected to the bottom of the position adjustment mechanism 2 and is used to mount the Bailey beam, wherein the adjustable sling 3 includes a long suspension rod 31, which is used to support the Bailey beam, and an adjustable lifting hook lock 32, which is fixed to the Bailey beam and obliquely tightened.

[0042] The top of the long suspension rod 31 is fixedly connected with an upper suspension block 311, and a double-headed fixing bolt 312 is arranged in the upper suspension block 311. A fixing through hole 313 is opened at the bottom of the long suspension rod 31, and the upper suspension block 311 is fixedly connected to the hook 223 at the bottom of the hoist through the double-headed fixing bolt 312. The adjustable suspension hook lock 32 includes a connecting component 321, an intermediate connecting block 322, an upper clamping groove 3221 is opened at the top of the intermediate connecting block 322, and a lower clamping groove 3222 is opened at the bottom of the intermediate connecting block 322. The upper clamping groove 3221 is fixedly connected to the fixing through hole 313 through the connecting component 321, a sling 323, and the sling 323 is rotatably connected in the lower clamping groove 3222. The sling 323 includes a rotating connecting plate 3231, and the rotating connecting plate 3231 is rotatably connected in the lower clamping groove 3222. The long suspension rope 323 2. One end of the long lifting rope 3232 is fixedly connected to the rotating connecting plate 3231 and the circular lifting head 3233. The other end of the long lifting rope 3232 is fixedly connected to the circular lifting head 3233. The circular lifting head 3233 is fixedly connected to the Bailey beam through a wire rope shackle. The connecting component 321 includes an elongated block 3211 and a connecting and fixing rod 3212. Two groups of connecting and fixing rods 3212 are provided. The two groups of connecting and fixing rods 3212 are fixedly connected to the elongated block 3211. The connecting and fixing rods 3212 are movably clamped in the upper clamping groove 3221 and the fixed through hole 313. A clamping groove 3213 and a clamping buckle 3214 are provided at the end of the connecting and fixing rod 3212. The clamping buckle 3214 is movably clamped in the clamping groove 3213. The connecting component 321 has the characteristics of convenient and fast disassembly and assembly, making the device more universal.

[0043] The steps to use are as follows:

[0044] Step 1: Splice and install the lifting device: transport the two sets of fixed support rails 1, the position adjustment mechanism 2 and the adjustable sling 3 to the work site for assembly, and then assemble them on the load-bearing beams on both sides. First, connect the fixed hook 11 on the fixed support rail 1 to the lifting ring at the bottom of the top structure plate and support it through the support adjustment threaded rod 14, and then assemble the remaining parts together in turn. Step 2: Connection between the lifting device and the Bailey frame: fix the circular lifting head 3233 to the two ends of the Bailey beam to be lifted and unloaded through the wire rope shackle, so that the whole During lifting, a total of four long lifting ropes 3232 of the two sets of lifting devices present an inverted triangle shape tilted inward. If the distance between the Bailey beam and the long lifting rope 3232 is too far, it can be changed by adjusting the fixed position of the adjustable lifting hook lock 32 in the long lifting rod 31. Step three, the movement and preliminary lifting of the Bailey beam are completed: After completing step two, the worker pulls up the Bailey beam by pulling the manual hoist 22, and then driven by the servo motor 16, the support slider 21 moves to the edge of the load-bearing beam and lowers the Bailey beam through the manual hoist 22 and places it on the load-bearing beam, waiting for the crane to make the final lifting.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A Bailey frame platform steel plate removal and lifting device, characterized in that: include: A fixed support rail (1), the fixed support rail (1) being connected to a lifting ring at the bottom of the top structural plate; A position adjustment mechanism (2), wherein the position adjustment mechanism (2) is slidably connected to the fixed support rail (1); An adjustable sling (3), the adjustable sling (3) being fixedly connected to the bottom of the position adjustment mechanism (2), and the adjustable sling (3) being used for mounting the Bailey beam; Wherein, the position adjustment mechanism (2) comprises: A supporting slider (21), wherein the supporting slider (21) is used to drive the adjustable hanger (3) to move in a horizontal direction; A manual hoist (22), wherein the manual hoist (22) is used to drive the adjustable sling (3) to move vertically; The adjustable sling (3) comprises: A long suspension rod (31), wherein the long suspension rod (31) is used to support the Bailey beam; An adjustable lifting hook lock (32) is fixed to the Bailey beam and is obliquely tightened.

2. The Bailey frame platform steel plate removal and lifting device according to claim 1 is characterized in that: A type of fixing hook (11) is arranged at the top of the fixed support rail (1), a connection port (12) is provided at the top of the fixed support rail (1), support fixing blocks (13) are fixedly connected to both sides of the fixed support rail (1), a support adjustment threaded rod (14) is arranged inside the support fixing block (13), a long slideway (15) is provided inside the fixed support rail (1), and a servo motor (16) is fixedly connected to one end of the long slideway (15).

3. The Bailey frame platform steel plate removal and lifting device according to claim 2 is characterized in that: The first type fixing hook (11) is fixedly connected in the connection port (12), a threaded through hole (131) is provided in the support fixing block (13), the support adjustment threaded rod (14) is threadedly connected in the threaded through hole (131), and the support adjustment threaded rod (14) comprises: A support pad (141), wherein the support pad (141) is used to abut against the bottom of the top structure plate; A rotating handle (142), wherein the rotating handle (142) is used to rotate and support the adjustment threaded rod (14); A long screw rod (151) is rotatably connected inside the long slideway (15), and one end of the long screw rod (151) is fixedly connected to the power output end of the servo motor (16).

4. The Bailey frame platform steel plate removal and lifting device according to claim 3 is characterized in that: A threaded channel (211) is provided at the top of the support slider (21), a long slide groove (212) is provided inside the support slider (21), and a fixed hanging block (213) is fixedly connected to the bottom of the support slider (21); The threaded channel (211) is threadedly connected to the long screw rod (151), the supporting sliding block (21) is slidably connected in the long slideway (15), and the fixed hanging block (213) is used to connect to the manual hoist (22).

5. The Bailey frame platform steel plate removal and lifting device according to claim 4 is characterized in that: The top of the manual hoist (22) is fixedly connected with a second-type fixed hook (221), the bottom of the manual hoist (22) is provided with a hoist bottom hook (223), a chain (222) is connected between the manual hoist (22) and the hoist bottom hook (223), and the second-type fixed hook (221) is fixedly connected with a fixed hanging block (213).

6. The Bailey frame platform steel plate removal and lifting device according to claim 4 is characterized in that: The top end of the long suspension rod (31) is fixedly connected with an upper suspension block (311), a stud fixing bolt (312) is arranged in the upper suspension block (311), a fixing through hole (313) is opened at the bottom end of the long suspension rod (31), and the upper suspension block (311) is fixedly connected to a hook (223) at the bottom of the hoist through the stud fixing bolt (312).

7. The Bailey frame platform steel plate removal and lifting device according to claim 6 is characterized in that: The adjustable hook lock (32) comprises: Connecting component (321); An intermediate connecting block (322), wherein an upper clamping groove (3221) is formed at the top of the intermediate connecting block (322), and a lower clamping groove (3222) is formed at the bottom of the intermediate connecting block (322), and the upper clamping groove (3221) is fixedly connected to the fixing through hole (313) via a connecting assembly (321); A sling (323) is rotatably connected in the lower clamping groove (3222).

8. The Bailey frame platform steel plate removal and lifting device according to claim 7 is characterized in that: The sling (323) comprises: A rotating connecting disk (3231), wherein the rotating connecting disk (3231) is rotatably connected in the lower clamping groove (3222); A long hanging rope (3232), one end of which is fixedly connected to the rotating connecting plate (3231); The circular hanging head (3233) is fixedly connected to the circular hanging head (3233) by the other end of the long hanging rope (3232), and the circular hanging head (3233) is fixedly connected to the Bailey beam through a wire rope shackle.

9. The Bailey frame platform steel plate removal and lifting device according to claim 7, characterized in that: The connection component (321) comprises: Oblong block (3211); Connecting and fixing rods (3212), wherein two groups of connecting and fixing rods (3212) are provided, wherein the two groups of connecting and fixing rods (3212) are fixedly connected to the oblong block (3211), wherein the connecting and fixing rods (3212) are movably clamped in the upper clamping groove (3221) and the fixing through hole (313), and a clamping groove (3213) is provided at the end of the connecting and fixing rod (3212); The buckle (3214) is movably engaged in the clamping slot (3213).

10. A Bailey frame platform steel plate dismantling and lifting method, comprising a Bailey frame platform steel plate dismantling and lifting device according to any one of claims 1 to 9, characterized in that ； Step 1: Assembling and installing the lifting device: transport the two sets of fixed support rails (1), the position adjustment mechanism (2) and the adjustable lifting device (3) to the work site for assembly, and then assemble them on the load-bearing beams on both sides. First, connect the fixed support rails (1) with the lifting ring at the bottom of the top structure plate through a type of fixed hook (11) and support it through the support adjustment threaded rod (14), and then assemble the remaining parts together in sequence; Step 2, connection between the lifting device and the Bailey frame: the circular lifting head (3233) is fixedly connected to the two ends of the Bailey beam to be lifted and unloaded through the wire rope shackle, so that when the whole is lifted, the four long lifting ropes (3232) of the two sets of lifting devices are in an inverted triangle shape tilted inwards. If the distance between the Bailey beam and the long lifting rope (3232) is too far, it can be changed by adjusting the fixed position of the adjustable lifting hook lock (32) in the long lifting rod (31); Step 3: The movement and preliminary lifting of the Bailey beam are completed: After the completion of step 2, the worker pulls up the Bailey beam by pulling the manual hoist (22), and then, driven by the servo motor (16), the support slider (21) moves to the edge of the load-bearing beam and lowers the Bailey beam to the load-bearing beam through the manual hoist (22), waiting for the crane to do the final lifting.

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