Prefabricated exterior wall panel auxiliary lifting device

Abstract

The present invention relates to a lifting device, specifically an auxiliary lifting device for prefabricated exterior wall panels, comprising: a hook shell and a pulley block rotatably mounted on the hook shell, a steel cable connected to a crane passing around the pulley block; a load-bearing steel, a limited position lifting unit is mounted on the load-bearing steel, and a support column is also fixed on the load-bearing steel; the support column is connected and mounted on a driving member of the hook shell; and also comprises two groups of one-way transmission members connecting the pulley block and the driving member. Through the rationally designed structural combination and connection relationship of the auxiliary lifting device, after the prefabricated exterior wall panels are lifted, linkage adjustment can be performed by retracting and releasing the steel cable of the crane to control the suspension angle of the prefabricated exterior wall panels in a suspended state, so that when the prefabricated exterior wall panels are assembled, the suspension angle of the prefabricated exterior wall panels in a suspended state lifted by multiple steel cables can be conveniently adjusted, and can be conveniently adjusted to the required angle, thereby improving the assembly accuracy.

Description

Technical Field

[0001] The invention relates to a lifting device, in particular to an auxiliary lifting device for a prefabricated exterior wall panel. Background Art

[0002] Prefabricated exterior wall panels refer to concrete panels that are prefabricated in factories and used for building exterior walls. This type of exterior wall panel is manufactured through factory production and is usually composed of concrete, steel bars, fiber and other materials. It has high strength and durability. Prefabricated exterior wall panels are a commonly used wall material in modern buildings, especially in large-scale buildings, residential and commercial buildings. Prefabricated exterior wall panels require a lifting device when they are assembled. The prefabricated exterior wall panel lifting device is a device specially used to lift prefabricated exterior wall panels. Since prefabricated exterior wall panels usually have large size and weight, some auxiliary devices are needed during the lifting process to ensure the safety and efficiency of the lifting operation. The main function of the auxiliary lifting device is to lift, balance and control the installation of exterior wall panels.

[0003] At present, in the process of lifting and assembling prefabricated exterior wall panels, it is usually necessary to use steel cable slings in conjunction with lifting equipment to suspend the prefabricated exterior wall panels from the ground into the air, and connect the reserved holes at the bottom of the prefabricated exterior wall panels with the steel bars in the building structure. In this process, the stability of the prefabricated exterior wall panels is very critical. Therefore, multiple steel cables are generally used during lifting. The traction of multiple steel cables can disperse the weight burden during lifting, ensure the lifting stability of the prefabricated exterior wall panels, and effectively prevent the prefabricated exterior wall panels from tilting, rotating or swinging in the air, thereby ensuring the safety of construction and the correct positioning of the prefabricated exterior wall panels. However, the realization of this stability also brings certain operational difficulties, especially in the angle adjustment of the prefabricated exterior wall panels in a suspended state.

[0004] In traditional lifting operations, workers often need to adjust the angle of prefabricated exterior wall panels so that the reserved holes of the prefabricated exterior wall panels can be accurately connected with the reserved steel bars of the building structure. However, due to the traction stress applied to the prefabricated exterior wall panels by multiple steel cables during the lifting process, the flexibility of angle adjustment is greatly reduced. In this case, workers may not be able to easily adjust the angle of the prefabricated exterior wall panels in the suspended state, and need to use strong traction or other auxiliary tools to achieve the adjustment. This not only increases the difficulty and complexity of the operation, but also prolongs the time of lifting and installation. Workers need to spend more time to complete the angle adjustment, thereby increasing the labor intensity of the operation. In addition, due to the lack of flexibility in operation, the docking position is often not accurate enough, which affects the quality of the combination of the prefabricated exterior wall panels and the building structure. This inefficient and cumbersome angle adjustment method not only increases the construction time, but also may bring quality risks, affecting the progress and construction quality of the entire construction project. Summary of the invention

[0005] The object of the present invention is to provide an auxiliary lifting device for prefabricated exterior wall panels to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] Prefabricated exterior wall panel auxiliary lifting device, installed on the crane, includes:

[0008] A hook housing and a pulley block rotatably mounted on the hook housing, and a steel cable connected to the crane passes over the pulley block;

[0009] A load-bearing steel, on which a limited position hoisting unit is installed, and a support column is also fixed to the load-bearing steel; the support column is connected and installed on the driving member of the hook housing;

[0010] It also includes two groups of one-way transmission members connecting the pulley group and the driving member. The driving member moves through the two groups of one-way transmission members only when the pulley group moves downward in the vertical direction to drive the support column to rotate.

[0011] The auxiliary lifting device for prefabricated exterior wall panels as described above: the pulley block is rotatably mounted on the hook housing via a main shaft, the pulley block is fixedly connected to the main shaft, and two inner gear rings are fixed on both sides of the pulley block;

[0012] A first gear is meshed in each inner gear ring, and the first gear is rotatably connected to the hook shell via a connecting shaft fixed to the first gear on one side, and the two connecting shafts are connected to the two groups of one-way transmission members.

[0013] The auxiliary lifting device for prefabricated exterior wall panels as described above: two symmetrical rotating seats are fixed on the support column, a load-bearing seat is rotatably sleeved on the support column between the two rotating seats, the left and right sides of the load-bearing seat are installed on the hook shell by two connecting pins, and the upper and lower sides of the load-bearing seat are slidably connected to the rotating seat by two sets of ball bearings.

[0014] The auxiliary lifting device for prefabricated exterior wall panels as described above: the driving member includes a worm installed between two groups of the one-way transmission members and a worm wheel drivingly connected to the worm, and the worm wheel is fixed on the top of the rotating seat.

[0015] The auxiliary lifting device for prefabricated exterior wall panels as described above: the one-way transmission member comprises a second gear connected to the connecting shaft and a third gear connected to the second gear through a chain;

[0016] A ratchet is fixed to the inner ring of the second gear, and a ratchet is unidirectionally adapted and rotatably engaged on the inner ring of the ratchet. The inner ring of the ratchet is fixed to the connecting shaft away from one end of the first gear.

[0017] The auxiliary lifting device for prefabricated exterior wall panels as described above: the position-limiting lifting unit comprises an I-beam arranged below the load-bearing steel, two sets of hanging parts symmetrically installed on the I-beam, and a position-limiting part installed on the load-bearing steel;

[0018] A plurality of plug-in columns are fixed on the I-beam, and the plug-in columns are slidably plugged into corresponding guide holes opened on the load-bearing steel. A spring is sleeved on the plug-in column located above the load-bearing steel, and a limit plate is fixed on the plug-in column at the top of the spring.

[0019] The auxiliary lifting device for prefabricated exterior wall panels as described above: the hanging member includes a sliding block adjustably mounted on the I-beam and a duckbill buckle connected to the sliding block via a steel wire.

[0020] The auxiliary lifting device for prefabricated exterior wall panels as described above: mounting seats are symmetrically fixed on the load-bearing steel, and limiting pins are fixed on the load-bearing steel on both sides of the mounting seats.

[0021] The auxiliary lifting device for prefabricated exterior wall panels as described above: the limiting member comprises two plug-in shafts rotating in the mounting seat, a double-headed screw threadedly connected to the two plug-in shafts, and an abutment rod fixed to the plug-in shafts, wherein the two plug-in shafts are symmetrically threadedly connected to the opposite threads of the double-headed screws;

[0022] It also includes a rack fixed on the I-beam, the rack is provided with a sliding groove that slides on the limit pin, the rack is meshed with a fourth gear that rotates on one end of the mounting seat, and the inner wall of the fourth gear is fixedly connected with a convex strip that slides in the limit groove provided on the plug-in shaft.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] By reasonably designing the structural combination and connection relationship of the auxiliary lifting device, after the prefabricated exterior wall panels are lifted, the steel cables of the crane can be retracted and extended to perform linkage adjustments to control the suspension angle of the prefabricated exterior wall panels in a suspended state. This enables the suspension angle of the prefabricated exterior wall panels in a suspended state lifted by multiple steel cables to be conveniently adjusted during assembly of the prefabricated exterior wall panels, thereby improving the convenience and accuracy of assembly of the prefabricated exterior wall panels at the installation position.

[0025] Specifically, the duckbill hook is hung on the lifting pile reserved for the prefabricated exterior wall panel, and the operation of the crane enables the auxiliary lifting device to lift. Due to the counterweight of the prefabricated exterior wall panel, the distance between the load-bearing steel and the I-beam is increased during lifting. Since a resistance rod is provided between the load-bearing steel and the I-beam, when the distance between the load-bearing steel and the I-beam increases, the resistance rod can be rotated and expanded, and the auxiliary clamping resistance is limited on both sides of the prefabricated exterior wall panel, thereby improving the stability of the prefabricated exterior wall panel after lifting and hanging, and reducing shaking.

[0026] Then, according to the needs of the assembly angle, the steel cable is laid out by the crane while the prefabricated exterior wall panel is suspended. The pulley block rotates due to the friction between the steel cable and drives the inner gear rings on both sides to rotate synchronously. The inner gear rings can engage and drive the first gear to rotate. Because the ratchet teeth act between the second gear and the connecting shaft, the first gear can only drive the second gear to rotate through the connecting shaft when the pulley block is laid out and reversed. The second gear drives the third gear to rotate through the chain, so that the worm and the worm wheel can rotate, and then the load-bearing steel and the I-beam can rotate. The prefabricated exterior wall panel in the suspended state can be adjusted horizontally. After adjusting the angle to the required position, the crane is swung horizontally for transportation, so that the prefabricated exterior wall panel in the suspended state can be transported within the reach of the operator, thereby improving the convenience and accuracy of assembly and reducing the risk factor of high-altitude operations when lifting prefabricated exterior wall panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a partial structural diagram of the auxiliary lifting device for prefabricated exterior wall panels;

[0028] Figure 2 It is a schematic diagram of the overall structure of the auxiliary lifting device for prefabricated exterior wall panels;

[0029] Figure 3 It is a structural schematic diagram of the auxiliary lifting device in the auxiliary lifting device of the prefabricated exterior wall panel;

[0030] Figure 4 It is a structural schematic diagram of the pulley block in the auxiliary lifting device of the prefabricated exterior wall panel;

[0031] Figure 5 This is an exploded view of the second gear in the auxiliary lifting device of the prefabricated exterior wall panel;

[0032] Figure 6 This is a schematic diagram of the structure of the load-bearing steel in the auxiliary lifting device of the prefabricated exterior wall panel;

[0033] Figure 7 It is a structural schematic diagram of the driving parts in the auxiliary lifting device of the prefabricated exterior wall panel;

[0034] Figure 8 This is a schematic diagram of the structure of the load-bearing steel in the auxiliary lifting device of the prefabricated exterior wall panel;

[0035] Fig. 9 It is a structural schematic diagram of the I-beam in the auxiliary lifting device of the prefabricated exterior wall panel;

[0036] Fig.10 It is a structural schematic diagram of the rack and the fourth gear in the auxiliary lifting device of the prefabricated exterior wall panel;

[0037] Fig.11This is a schematic diagram of the structure of the resistance rod in the auxiliary lifting device of the prefabricated exterior wall panel.

[0038] In the figure: 1. crane; 2. hook shell; 3. main shaft; 4. pulley block; 5. inner gear ring; 6. first gear; 7. connecting shaft; 8. second gear; 9. chain; 10. third gear; 11. worm; 12. worm wheel; 13. ratchet; 14. ratchet; 15. load-bearing seat; 16. connecting pin; 17. ball; 18. support column; 19. rotating seat; 20. load-bearing steel; 21. guide hole; 22. mounting seat; 23. limit pin; 24. plug-in column; 25. limit plate; 26. spring; 27. I-beam; 28. sliding block; 29. ​​duckbill buckle; 30. rack; 31. sliding groove; 32. fourth gear; 33. convex strip; 34. abutment rod; 35. plug-in shaft; 36. limit groove; 37. double-headed screw. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] See also Figure 1 to Figure 7 In the embodiment of the present invention, the auxiliary lifting device for prefabricated exterior wall panels is installed on the crane 1 and includes:

[0041] A hook housing 2 and a pulley block 4 rotatably mounted on the hook housing 2, and a steel cable connected to the crane 1 passes over the pulley block 4;

[0042] A load-bearing steel 20, on which a limited position hoisting unit is installed, and a support column 18 is also fixed to the load-bearing steel 20; the support column 18 is connected and installed on the driving member of the hook housing 2;

[0043] It also includes two groups of one-way transmission members connecting the pulley block 4 and the driving member. The driving member moves through the two groups of one-way transmission members only when the pulley block 4 moves downward in the vertical direction to drive the support column 18 to rotate.

[0044] In this embodiment, the auxiliary lifting device is used to hook and lift the prefabricated exterior wall panels. The crane 1 can control the retraction and extension of the steel cable. Since the friction between the steel cable and the pulley block 4 is relatively large, and the pulley block 4 is rotatably connected to the hook shell 2, the rotation of the pulley block 4 can be adjusted when the steel cable is retracted and extended. When the crane 1 controls the steel cable to release, the pulley block 4 will rotate on the hook shell 2 and descend in the vertical direction. At this time, the rotating pulley block 4 drives the driving member to rotate through the one-way transmission member. Since the driving member is connected to the support column 18, the pulley block 4 descends in the vertical direction. When the prefabricated exterior wall panels are moved, the support column 18 can be linked to rotate, so that when the prefabricated exterior wall panels are hoisted by the limit hoisting unit installed on the load-bearing steel 20, the rotation angle of the prefabricated exterior wall panels in the suspended state can be controlled by rotating the support column 18, so that the angle adjustment of the suspended prefabricated exterior wall panels in the uncapped high-altitude assembly environment can be more convenient. Through coordinated design, the assembly and use of prefabricated exterior wall panels can be improved, and at the same time, the risk factor caused by the operator using additional ropes to strongly pull or adjust the angle of the suspended prefabricated exterior wall panels at high altitude can be reduced.

[0045] The auxiliary lifting device is suitable for use on uncapped buildings. When lifting the prefabricated exterior wall panels, since the reserved holes on the prefabricated exterior wall panels need to be plugged with the reserved steel bars on the building, it is necessary to adjust the angle of the prefabricated exterior wall panels in a suspended state so that the reserved holes on the prefabricated exterior wall panels can be plugged with the reserved steel bars. The current angle adjustment method usually requires workers working at heights to use tools such as traction ropes to pull the traction hooks of the prefabricated exterior wall panels in a suspended state to adjust the suspension angle of the prefabricated exterior wall panels. Due to the traction principle of the multiple steel cables on the crane 1, the suspension angle of the prefabricated exterior wall panels in a suspended state due to the traction of the multiple steel cables is not easy to adjust. Workers are required to forcefully twist the prefabricated exterior wall panels in a suspended state, or use external angle adjustment tools. Therefore, the traditional angle adjustment operation of the prefabricated exterior wall panels in a suspended state is relatively inconvenient, and there is a greater risk factor at high altitude for the operating workers. Therefore, in this embodiment, the auxiliary lifting device can control the suspension angle of the prefabricated exterior wall panels in the suspended state through the linkage cooperation of the lifting and lowering of the crane 1. After the suspension angle of the prefabricated exterior wall panels in the suspended state is adjusted, the suspended prefabricated exterior wall panels are transported horizontally to the assembly position by the crane 1, which can reduce the manual traction adjustment of the suspended prefabricated exterior wall panels, avoid the angle adjustment affected by the anti-torsion traction stress of multiple steel cables, and improve operational safety.

[0046] See also Figure 3 , Figure 4 As a further solution of the present invention, the pulley block 4 is rotatably mounted on the hook housing 2 via the main shaft 3, the pulley block 4 is fixedly connected to the main shaft 3, and two inner gear rings 5 ​​are fixed on both sides of the pulley block 4;

[0047] A first gear 6 is meshed in each of the inner gear rings 5. The first gear 6 is rotatably connected to the hook housing 2 via a connecting shaft 7 fixed thereto at one side. The two connecting shafts 7 are connected to two groups of one-way transmission members.

[0048] In this embodiment, the pulley block 4 is fixed on the main shaft 3, and the pulley block 4 is connected to the steel cable transmission of the crane 1. When the crane 1 is lifted or lowered, the friction between the pulley block 4 and the steel cable can cause the pulley block 4 to rotate on the hook shell 2 through the main shaft 3. Since internal gear rings 5 ​​are provided on both sides of the pulley block 4, when the pulley block 4 rotates, the internal gear rings 5 ​​will rotate synchronously. The internal gear rings 5 ​​can engage and drive the first gear 6 to rotate. The first gear 6 is rotatably connected to the hook shell 2 through the connecting shaft 7. Therefore, when the first gear 6 rotates, the one-way transmission member can be driven to move through the connecting shaft 7, thereby meeting the linkage use requirements and enabling the one-way transmission member to be linked with the pulley block 4.

[0049] See also Figure 7~Figure 8 As a further solution of the present invention, two symmetrical rotating seats 19 are fixed on the support column 18, and a load-bearing seat 15 is rotatably sleeved on the support column 18 between the two rotating seats 19. The left and right sides of the load-bearing seat 15 are plugged and installed on the hook shell 2 through two connecting pins 16, and the upper and lower sides of the load-bearing seat 15 are slidably connected to the rotating seat 19 through two groups of balls 17.

[0050] The driving member includes a worm 11 installed between two groups of the one-way transmission members and a worm wheel 12 drivingly connected to the worm 11 , and the worm wheel 12 is fixed on the top of the rotating seat 19 .

[0051] In this embodiment, grooves are provided on both upper and lower side surfaces of the load-bearing seat 15 to match the balls 17, and grooves are also provided on the two rotating seats 19 to match the balls 17. The balls 17 on both sides of the load-bearing seat 15 are placed in the grooves provided on the load-bearing seat 15 and the rotating seat 19 to ensure the rolling path of the balls 17 and meet the rotation use requirements. The balls 17 on both sides between the rotating seat 19 and the load-bearing seat 15 can reduce the rotation friction, so that the rotating seat 19 is easy to rotate on the load-bearing seat 15, meeting the convenient adjustment use requirements;

[0052] The load-bearing seat 15 can be installed and disassembled on the hook shell 2 through the connecting pins 16 on both sides. According to usage requirements, the load-bearing seat 15 can be removed and the hook can be replaced on the hook shell 2 to meet different lifting conditions. The rotating seat 19 on the top is fixedly connected to the worm gear 12. When the worm 11 drives the worm wheel 12 to rotate, the rotating seat 19 will be driven to rotate synchronously. Through the self-locking effect of the worm 11 and the worm wheel 12, the worm wheel 12 will not drive the worm 11 to rotate, thereby meeting usage requirements.

[0053] See also Figure 3~Figure 5 As a further solution of the present invention, the one-way transmission member includes a second gear 8 connected to the connecting shaft 7 and a third gear 10 transmission-connected to the second gear 8 through a chain 9;

[0054] A ratchet 13 is fixed to the inner ring of the second gear 8 , and a ratchet 14 is unidirectionally adapted and rotatably engaged on the inner ring of the ratchet 13 . The inner ring of the ratchet 14 is fixed to the connecting shaft 7 away from one end of the first gear 6 .

[0055] In this embodiment, the inner ring of the inner gear ring 5 is meshed with a first gear 6, and one side of the first gear 6 is rotatably connected to the hook housing 2 through a connecting shaft 7. Therefore, when the pulley block 4 rotates, the first gear 6 and the connecting shaft 7 can be linked to rotate synchronously. A second gear 8 is installed at one end of the connecting shaft 7, and a ratchet 13 and ratchet teeth 14 are arranged inside the second gear 8. Through the cooperation of the ratchet 13 and the ratchet teeth 14, the second gear 8 can be driven to rotate only when the connecting shaft 7 rotates toward the vortex direction of the ratchet teeth 14. When the connecting shaft 7 rotates in the opposite vortex direction of the ratchet teeth 14, the ratchet teeth 14 will slip in the ratchet wheel 13 and will not cause The second gear 8 is driven to rotate. Through the coordinated design, when the crane 1 is hoisting, the second gear 8 will not rotate, and when the crane 1 with the counterweight is lowered, the second gear 8 will rotate. The second gear 8 is connected to the third gear 10 through the chain 9, and the third gear 10 will rotate synchronously with the second gear 8. The third gear 10 is fixedly connected to the worm 11, and the worm 11 is meshed with the worm wheel 12. When the third gear 10 rotates, the worm wheel 12 can rotate synchronously to meet the linkage use requirements. The ratchet 13 and the ratchet 14 as well as the worm 11 and the worm wheel 12 are all applications of the prior art, which meet the use requirements and ensure the adjustment use effect.

[0056] See also Figure 8~Figure 11 As a further solution of the present invention, the position-limiting hoisting unit includes an I-beam 27 disposed below the load-bearing steel 20, two sets of hanging parts symmetrically installed on the I-beam 27, and a position-limiting part installed on the load-bearing steel 20;

[0057] A plurality of plug-in columns 24 are fixed on the I-beam 27, and the plug-in columns 24 are slidably plugged into corresponding guide holes 21 opened on the load-bearing steel 20. A spring 26 is sleeved on the plug-in column 24 located above the load-bearing steel 20, and a limit plate 25 is fixed on the plug-in column 24 at the top of the spring 26.

[0058] The hanging member includes a sliding block 28 adjustably mounted on the I-beam 27 and a duckbill buckle 29 connected to the sliding block 28 via a steel wire.

[0059] The load-bearing steel 20 is symmetrically fixed with mounting seats 22 , and limit pins 23 are fixed on the load-bearing steel 20 at both sides of the mounting seats 22 .

[0060] The stopper comprises two plug-in shafts 35 rotating in the mounting seat 22, a double-headed screw 37 threadedly connected to the two plug-in shafts 35, and an abutment rod 34 fixed to the plug-in shaft 35, wherein the two plug-in shafts 35 are symmetrically threadedly connected to the opposite threads of the double-headed screw 37;

[0061] It also includes a rack 30 fixed on the I-beam 27, and a sliding groove 31 is provided on the rack 30 to slide on the limit pin 23. The rack 30 is meshed with a fourth gear 32 rotating on one end of the mounting seat 22, and the inner wall of the fourth gear 32 is fixedly connected to a convex strip 33 that slides in cooperation with the limit groove 36 provided on the plug-in shaft 35.

[0062] In this embodiment, the plug-in column 24 is correspondingly slidably plugged into the guide hole 21, and the plug-in column 24 extends to a part of the top of the load-bearing steel 20, and one end of the extension is fixedly connected to the limit plate 25, and the limit plate 25 can limit the distance between the load-bearing steel 20 and the I-beam 27. One end of the spring 26 sleeved on the plug-in column 24 abuts against the limit plate 25, and the other end abuts against the top of the load-bearing steel 20. Through the rebound force of the spring 26, when the duckbill buckle 29 is not hooked with the prefabricated exterior wall panel, the I-beam 27 can fit on the load-bearing steel 20. At the bottom, the distance between the load-bearing steel 20 and the I-beam 27 is the smallest. The spring 26, which is squeezed and maintained with a rebound force under the weight, will rebound and reset after the hoisted prefabricated exterior wall panel touches the ground, meeting the use requirements. The duckbill buckle 29 is hooked on the hook point reserved on the prefabricated exterior wall panel. When lifting, the I-beam 27 will be loaded. At this time, the distance between the limit plate 25 and the load-bearing steel 20 is reduced, so that the spring 26 is squeezed and contracted and maintains a rebound force. At this time, the distance between the load-bearing steel 20 and the I-beam 27 is increased, meeting the linkage use requirements.

[0063] After the duckbill buckle 29 is hooked on the prefabricated exterior wall panel, the crane 1 is lifted and the duckbill buckle 29 will be subjected to weight, thereby increasing the distance between the I-beam 27 and the load-bearing steel 20. Since the I-beam 27 is fixedly connected with a rack 30, a sliding groove 31 which is slidably connected with the limit pin 23 is provided on the rack 30. By sliding on the limit pin 23 through the sliding groove 31, the rack 30 can be restricted to always mesh with the fourth gear 32. When the distance between the load-bearing steel 20 and the I-beam 27 increases, since the rack 30 is displaced downward relative to the load-bearing steel 20, the rack 30 can mesh to make the fourth gear 32 rotate. The fourth gear 32 is rotatably connected to one end of the mounting seat 22. The convex strip 33 provided on the inner wall of the fourth gear 32 is slidably connected with the limit groove 36 provided on the plug-in shaft 35. Therefore, when the fourth gear 32 rotates, The fourth gear 32 is able to drive the plug-in shaft 35 to rotate in the mounting seat 22, and the maximum rotation angle of the fourth gear 32 is 90 degrees in both directions. Therefore, the rotation acting on the plug-in shaft 35 allows the plug-in shaft 35 to rotate and adjust 90 degrees in both directions, so that the interference rod 34 can be swung and adjusted 90 degrees in both directions. When the duckbill buckle 29 is not hooked on the prefabricated exterior wall panel, since the distance between the load-bearing steel 20 and the I-beam 27 is the smallest, the interference rod 34 is in a state parallel to the load-bearing steel 20 at this time, which will not affect the hooking and use of the duckbill buckle 29 and the prefabricated exterior wall panel. After the I-beam 27 is lifted and loaded, the rack 30 is engaged to make the fourth gear 32 rotate, so that the interference rod 34 swings with the rotation of the plug-in shaft 35 in the mounting seat 22 as the center, and one end of the interference rod 34 rotates downward, so that the interference rod 34 rotates and unfolds on both sides of the prefabricated exterior wall panel to limit the position;

[0064] Since different prefabricated exterior wall panels have different thicknesses, in order to adapt to the auxiliary limit use of prefabricated exterior wall panels of different sizes, by rotating the double-headed screw 37, the two plug-in shafts 35 symmetrically threadedly connected to the opposite threads of the double-headed screw 37 can be moved toward or away from each other for adjustment. Since the limit groove 36 and the convex strip 33 are slidably limited, and the fourth gear 32 is engaged with the rack 30, when the rack 30 is not lifted, the fourth gear 32 will not be driven to rotate. Therefore, when the double-headed screw 37 is rotated, the plug-in shafts 35 will move toward or away from each other, controlling the distance between the two plug-in shafts 35 symmetrically arranged on the same side, so that the distance between the two abutment rods 34 on the same side can just adapt to the thickness size of the prefabricated exterior wall panel that needs to be lifted.

[0065] The duckbill buckle 29 is an application of the prior art. The duckbill buckle 29 can be used to conveniently hook and hang the prefabricated exterior wall panels. The crane 1 can adjust the lifting state of the prefabricated exterior wall panels by retracting and releasing a pair of steel cables. When the suspension angle needs to be adjusted for lifting the prefabricated exterior wall panel, the steel cable is released by the crane 1, and the steel cable is transmitted on the pulley block 4. The friction force generated between the steel cable and the pulley block 4 can drive the pulley block 4 to rotate on the hook shell 2 through the main shaft 3, so that the inner gear rings 5 ​​on both sides of the pulley block 4 rotate synchronously with the pulley block 4, and the inner gear rings 5 ​​can mesh and drive the first gear 6 to rotate. The first gear 6 drives the second gear 8 to rotate through the connecting shaft 7, and then drives the third gear 10 to rotate through the chain 9, so that the worm 11 meshes with the worm wheel 12 to rotate. At this time, the rotating seat 19 can rotate around the axis of the support column 18 on the load-bearing seat 15, so that the load-bearing steel 20 and the I-beam 27 can be adjusted to rotate horizontally to control the angle of the prefabricated exterior wall panel in the suspended state; and when the crane 1 is winding up the steel cable, the ratchet 14 will slip in the ratchet 13, and at this time the connecting shaft 7 will not drive the second gear 8 to rotate, and the prefabricated exterior wall panel will not rotate, so the prefabricated exterior wall panel can be used for normal lifting.

[0066] The design of this scheme can adjust the suspension height of the prefabricated exterior wall panel by the retracting and releasing line of the crane 1, thereby realizing the adjustment and control of the suspension angle and improving the lifting and use effect of the prefabricated exterior wall panel. Specifically, this scheme can conveniently adjust the angle of the prefabricated exterior wall panel by reasonably designing the structural combination and connection relationship of the auxiliary lifting device, and will not be affected by the traction stress of multiple steel cables, making the assembly more convenient; it can also avoid the need for the operator to lean out of the edge of the building or use an additional traction rope to hook and pull the prefabricated exterior wall panel to adjust the angle of the prefabricated exterior wall panel in the traditional lifting operation, so that the suspended prefabricated exterior wall panel enters the designated assembly position, thereby improving the operational safety during the lifting and assembly of the prefabricated exterior wall panel.

[0067] The above embodiments are exemplary rather than restrictive, so the technical solutions of the present invention that can be implemented in other specific forms without departing from the spirit or basic features of the present invention are all included in the present invention.

Claims

1. The auxiliary lifting device for prefabricated exterior wall panels is installed on the crane and is characterized by: include: The hook shell and the pulley block rotatably mounted on the hook shell, and the steel cable connected to the crane passes around the pulley block; The gear is connected with the gear train by the two gear units, and the gear train is connected with the gear train through the two gear units to drive the gear train to rotate. The unit includes an I-beam arranged below the load-bearing steel, two groups of hanging parts symmetrically installed on the I-beam and a limit piece installed on the load-bearing steel; a plurality of plug-in columns are fixed on the I-beam, the plug-in columns are slidably plugged into the guide holes correspondingly opened on the load-bearing steel, a spring is sleeved on the plug-in column located above the load-bearing steel, a limit plate is fixed on the plug-in column at the top of the spring, a mounting seat is symmetrically fixed on the load-bearing steel, and limit pins are fixed on the load-bearing steel on both sides of the mounting seat, the limit piece includes two plug-in shafts rotating in the mounting seat, a double-headed screw threadedly connected to the two plug-in shafts, and an abutment rod fixed on the plug-in shaft, wherein the two plug-in shafts are symmetrically threadedly connected to the opposite threads of the double-headed screw; it also includes a rack fixed on the I-beam, a sliding groove sliding on the limit pin is opened on the rack, the rack is meshed with a fourth gear rotating at one end of the mounting seat, and a convex strip sliding in the limit groove opened on the plug-in shaft is fixedly connected to the inner wall of the fourth gear.

2. The auxiliary lifting device for prefabricated exterior wall panels according to claim 1 is characterized in that: The driving member comprises a worm installed between two groups of one-way transmission members and a worm wheel connected to the worm wheel, and the worm wheel is fixed on the top of the rotating seat.

3. The auxiliary lifting device for prefabricated exterior wall panels according to claim 1 is characterized in that: The one-way transmission component includes a second gear connected to the connecting shaft and a third gear connected to the second gear through a chain; a ratchet is fixed to the inner ring of the second gear, and the inner ring of the ratchet is unidirectionally adapted to rotate and engage with ratchets, and the inner ring of the ratchet is fixed to the connecting shaft away from one end of the first gear.

4. The auxiliary lifting device for prefabricated exterior wall panels according to claim 1, characterized in that: The hanging part comprises a sliding block which is adjustably mounted on the I-beam and a duckbill buckle which is connected with the sliding block through a steel wire.

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