Platform adjusting device for hoisting fabricated concrete building component

Abstract

The invention relates to the field of fabricated buildings, in particular to a platform adjusting device for hoisting a fabricated concrete building component, which comprises a placing platform for placing a concrete component, a connecting block arranged on the placing platform, a hoisting rope connected with the connecting block, and a hoisting assembly, the four connecting blocks are distributed and correspond to the four corners of the placing platform, the connecting blocks are positioned and slidably installed on the placing platform through adjusting assemblies, a horizontal ruler is embedded in the lower end face of the placing platform, and winding pieces used for winding the hoisting ropes are arranged on the connecting blocks. The gravity center position of the placing platform can be adjusted by adjusting the position of the connecting block on the placing platform, so that the gravity center positions of the concrete member and the placing platform coincide as much as possible. Therefore, the concrete members with different shapes can be conveniently and stably placed on the placing platform, and then are hoisted and transported to floors needing the concrete members. Meanwhile, the probability that the concrete member is damaged due to operations such as bundling is also reduced.

Description

Technical Field

[0001] This application relates to the field of prefabricated buildings, and particularly to a platform adjusting device for hoisting prefabricated concrete building components. Background Art

[0002] Precast concrete components can save construction procedures. Casting concrete building components at the prefabrication site can greatly improve the construction progress. For large concrete components, the traditional method of manual handling can no longer meet the construction progress requirements, and hoisting tools need to be used to complete the task. However, due to the various shapes of concrete components, it is difficult to operate during hoisting and binding, and it may also cause external damage to the concrete components. Therefore, how to hoist concrete building components conveniently and stably is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0003] In order to better hoist concrete components with various shapes, this application provides a platform adjusting device for hoisting prefabricated concrete building components.

[0004] A platform adjusting device for hoisting prefabricated concrete building components provided by this application adopts the following technical solutions: A platform adjusting device for hoisting prefabricated concrete building components includes a placement platform for placing concrete components, connection blocks arranged on the placement platform, hoisting ropes connected to the connection blocks, and a lifting assembly for hoisting the hoisting ropes. Four connection blocks are provided and are distributed corresponding to the four corners of the placement platform. The connection blocks are positioned and slidably installed on the placement platform through an adjusting assembly. A spirit level is embedded in the lower end surface of the placement platform. A winding member for winding the hoisting rope is provided on the connection block. After a concrete component is placed on the placement platform, the connection blocks slide on the placement platform until the placement platform is in a horizontal state, and the hoisting ropes are wound by the winding member.

[0005] By adopting the above technical solutions, the concrete component is directly placed on the placement platform, and the placement platform is hoisted to a slight height by the lifting assembly to observe whether the placement platform is in a horizontal state. By adjusting the position of the connection blocks on the placement platform, the center of gravity position of the placement platform can be adjusted to make the center of gravity positions of the concrete component and the placement platform coincide as much as possible, so that the placement platform is in a horizontal state. Then, the hoisting ropes are tightened by the winding member, so that the four hoisting ropes are stressed simultaneously, and the placement platform can be hoisted more stably. Thus, concrete components with various shapes can be conveniently and stably placed on the placement platform and then hoisted and transported to the floor where the concrete component is needed. At the same time, the probability of damage to the concrete component caused by operations such as bundling is also reduced.

[0006] Optionally, the lifting assembly includes a first lifting hook and a second lifting hook. The first lifting hook and the second lifting hook are spaced apart along the length direction of the lifting assembly. The two lifting ropes located at the front end of the placement platform are the first lifting ropes, and the two lifting ropes located at the rear end of the placement platform are the second lifting ropes. The first lifting ropes are connected to the first lifting hook, and the second lifting ropes are connected to the second lifting hook.

[0007] By adopting the above technical solution, the first lifting ropes and the second lifting ropes apply cross forces to the placement platform, so that the placement platform can be lifted more stably. At the same time, the inclination of the placement platform can also be controlled by controlling the lengths of the first lifting ropes and the second lifting ropes, which is convenient for the operator to take the concrete components on the placement platform after the placement platform is transported to the corresponding floor.

[0008] Optionally, the second lifting hook is located at the front end of the first lifting hook, and the connection block corresponding to the first lifting rope is located on the inner plane of the connection block corresponding to the second lifting rope.

[0009] By adopting the above technical solution, interference between the lifting ropes can be avoided, so that each lifting rope can be retracted and extended better according to requirements.

[0010] Optionally, the connection block is located at the edge of the placement platform, and the sliding direction of the connection block is parallel to the length direction of the placement platform.

[0011] By adopting the above technical solution, more placement space can be provided for the concrete components as much as possible, and the probability of interference between the connection block and the concrete components can be reduced.

[0012] Optionally, a positioning seat is installed on the lifting rope, and a blocking member for blocking the concrete component is provided between the positioning seats of the two lifting ropes. At least one positioning seat corresponds to the upper and lower ends of one blocking member respectively.

[0013] By adopting the above technical solution, the blocking member can limit the concrete component to a certain extent, reducing the safety problems caused by the concrete component falling from the placement platform due to accidents during transportation.

[0014] Optionally, the positioning seat located at the upper end of the blocking member is the upper positioning seat, and the positioning seat located at the lower end of the blocking member is the lower positioning seat. The upper positioning seat is slidably connected to the lifting rope in a positioning manner, and the lower positioning seat is slidably connected to the lifting rope, and the lower positioning seat abuts against the placement platform.

[0015] By adopting the above technical solution, when the length of the lifting rope changes, the lower positioning seat slides relative to the lifting rope as the lifting rope is wound up, so that the gap between the blocking member and the placement platform is always in a relatively small state, thus better blocking the concrete component.

[0016] Optionally, a fixing mechanism is provided at the lower end of the placing platform. The fixing mechanism includes a mounting base for connecting with the placing platform, a clamping block slidably connected to the mounting base, and a linkage assembly. When the placing platform is transported to the required floor, the linkage assembly is used to drive the two clamping blocks to slide relative to the mounting base and clamp the floor slab.

[0017] By adopting the above technical solution, when the placing platform moves to the corresponding floor position, the placing platform can be fixed relative to the corresponding floor through the fixing mechanism at this time, so that the concrete components can be discharged more stably and safely.

[0018] Optionally, when the upper positioning seat slides down and the cloth blocking between the two lifting ropes descends, the linkage assembly drives the two clamping blocks to clamp the floor slab.

[0019] By adopting the above technical solution, when it is necessary to take the concrete component away from the placing platform, the upper positioning seat can be slid down, so that the feeding space above one end of the placing platform is exposed. At the same time, the clamping block can clamp the floor slab, so that the concrete component can be taken more stably and safely.

[0020] Optionally, the linkage assembly includes a linkage rod slidably connected to the mounting base, a force dividing rod rotatably connected to the linkage rod and the clamping block at the same time, and a linkage rope connected between the upper end of the upper positioning seat and the linkage rod. When the upper positioning seat slides downwards, the linkage rope is driven from relaxation to tension to drive the linkage rod to slide relative to the mounting base.

[0021] By adopting the above technical solution, when the upper positioning seat slides down, the clamping blocks are driven to approach each other and clamp the floor slab.

[0022] Optionally, a first pulley frame is installed on the lifting rope, and the first pulley frame is located above the upper positioning frame; a second pulley frame is provided at the lower end of the placing platform, and the second pulley frame is located at one end of the linkage rod. The first pulley frame and the second pulley frame are used to guide the linkage rope.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Enabling concrete components with various shapes to be conveniently and stably placed on the placing platform and then hoisted and transported to the floor where the concrete component is required; 2. At the same time, it also reduces the probability of damage to concrete components caused by operations such as bundling; 3. Reducing the probability of concrete components falling during the hoisting process and improving the transportation safety; 4. Making the placing platform more stable relative to the floor slab during the discharging process and improving the discharging safety. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of Embodiment 1.

[0025] Figure 2 It is a schematic structural diagram of Embodiment 1 with the lifting assembly hidden.

[0026] Figure 3 is Figure 2 the enlarged view of part A in

[0027] Figure 4 It is a schematic structural diagram of Embodiment 1 with the lifting assembly and part of the blocking members hidden.

[0028] Figure 5 is Figure 4 the enlarged view of part B in

[0029] Figure 6 It is a schematic diagram of the fixing mechanism in Embodiment 1.

[0030] Figure 7 It is a schematic structural diagram of Embodiment 2 with the lifting assembly hidden.

[0031] Explanation of reference numerals: 1. placing platform; 11. adjusting groove; 12. dovetail groove; 13. fixing part; 14. rotating part; 2. connecting block; 3. hoisting rope; 4. lifting assembly; 41. lifting arm; 42. first driving member; 43. second driving member; 44. first lifting hook; 45. second lifting hook; 5. adjusting assembly; 51. adjusting block; 52. adjusting screw rod; 53. adjusting driving member; 6. winding member; 7. spirit level; 81. upper positioning seat; 811. fixing bolt; 82. lower positioning seat; 9. blocking member; 10. fixing mechanism; 101. mounting seat; 1011. vertical groove; 102. linkage assembly; 1021. linkage rod; 1022. force dividing rod; 1023. linkage rope; 103. clamping block; 104. return spring; 105. first pulley bracket; 106. second pulley bracket; 107. movable pulley seat; 1071. dovetail block; 108. connecting spring. Detailed implementation manners

[0032] The following further elaborates on this application in conjunction with the attached Figure 1-7 drawings.

[0033] In the description of this application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "linkage" 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 an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0035] The embodiment of the present application discloses a platform adjusting device for hoisting prefabricated concrete building components.

[0036] Embodiment 1 Please refer to Figure 1 and Figure 2 In an embodiment of the present application, a platform adjusting device for hoisting prefabricated concrete building components includes a placement platform 1 for placing concrete components, a connection block 2 arranged on the placement platform 1, a hoisting rope 3 connected to the connection block 2, and a hoisting assembly 4 for lifting the hoisting rope 3. There are four connection blocks 2, which are distributed corresponding to the four corners of the placement platform 1. The connection blocks 2 are slidably installed on the placement platform 1 along the length direction of the placement platform 1 through an adjusting assembly 5. A winding member 6 for winding the hoisting rope 3 is installed on the connection block 2. The winding member 6 is a winch, and a tension sensor for checking the tension of the hoisting rope 3 is arranged on the hoisting rope 3. A spirit level 7 is embedded in the lower end surface of the placement platform 1. It should be noted that the tension sensor is not drawn in the figure.

[0037] Directly place the concrete component to be transported on the placement platform 1, slightly lift the placement platform 1 through the hoisting assembly 4, and observe whether the placement platform 1 is in a horizontal state. If it is not in a horizontal state, the position of the connection block 2 on the placement platform 1 can be adjusted through the adjusting assembly 5, so as to adjust the center of gravity of the placement platform 1, and make the center of gravity positions of the concrete component and the placement platform 1 coincide as much as possible, so that the placement platform 1 is in a horizontal state. Then tighten the hoisting rope 3 through the winding member 6, so that the four hoisting ropes 3 are stressed simultaneously, so that the placement platform 1 can be hoisted more stably. Thus, concrete components with various shapes can be conveniently and stably placed on the placement platform 1, and then hoisted and transported to the floor where the concrete component is needed. At the same time, the probability of damage to the concrete component caused by operations such as bundling is also reduced.

[0038] Specifically, please refer to Figure 1, the lifting assembly 4 includes a lifting arm 41, a first driving member 42 installed on the lifting arm 41, a second driving member 43 installed on the lifting arm 41, a first lifting hook 44 installed at the output end of the first driving member 42, and a second lifting hook 45 installed at the output end of the second driving member 43. The first driving member 42 and the second driving member 43 can be winches or the like. By winding or unwinding the first driving member 42 and the second driving member 43, the lifting of the first lifting hook 44 and the second lifting hook 45 can be achieved.

[0039] Further, let the end of the placing platform 1 close to the floor to be unloaded be the front end, and the end of the placing platform 1 far from the floor to be unloaded be the rear end. The first lifting hook 44 and the second lifting hook 45 are arranged at intervals along the length direction of the lifting arm 41, and the second lifting hook 45 is located at the front end of the first lifting hook 44. The two lifting ropes 3 at the front end of the placing platform 1 are the first lifting ropes 3, and the two lifting ropes 3 at the rear end of the placing platform 1 are the second lifting ropes 3. The first lifting rope 3 is connected to the first lifting hook 44, and the second lifting rope 3 is connected to the second lifting hook 45. The connecting block 2 corresponding to the first lifting rope 3 is located on the inner plane of the connecting block 2 corresponding to the second lifting rope 3.

[0040] By applying force to the placing platform 1 crosswise through the first lifting rope 3 and the second lifting rope 3, the placing platform 1 can be lifted more stably. At the same time, the inclination of the placing platform 1 can also be controlled by controlling the lifting degree of the first lifting hook 44 and the second lifting hook 45, which is convenient for the operator to take the concrete components on the placing platform 1 after the placing platform 1 is transported to the corresponding floor. For example, after the front end of the placing platform 1 enters the floor where the concrete components to be used are located, the first lifting hook 44 can be lifted alone, or the lifting height is greater than that of the second lifting hook 45, so that the placing platform 1 is inclined, which is convenient for discharging.

[0041] Specifically, please refer to Figure 2 and Figure 3 , the adjusting assembly 5 includes an adjusting block 51, an adjusting screw rod 52 and an adjusting driving member 53. The adjusting block 51 is fixedly connected to the connecting block 2. An adjusting groove 11 is formed on the placing platform 1, and the adjusting block 51 is slidably connected to the adjusting groove 11. The adjusting screw rod 52 is arranged along the length direction of the adjusting groove 11, and the adjusting screw rod 52 passes through the adjusting block 51. The adjusting screw rod 52 is rotatably connected to the placing platform 1 and threadedly connected to the adjusting block 51. The adjusting driving member 53 is used to provide rotational power for the adjusting screw rod 52. The adjusting driving member 53 can be a force-applying handle or a motor. By rotating the adjusting screw rod 52, the adjusting block 51 can be driven to slide, so as to realize the sliding of the connecting block 2 relative to the placing platform 1.

[0042] Please refer to Figure 4, in order to reduce the probability of the concrete components on the placement platform 1 falling during the hoisting process, two positioning seats are installed on a hoisting rope 3. The positioning seat at the upper end is the upper positioning seat 81, and the positioning seat at the lower end is the lower positioning seat 82. The upper positioning seat 81 is positioned and slidably connected to the hoisting rope 3, the lower positioning seat 82 is slidably connected to the hoisting rope 3, and the lower positioning seat 82 abuts against the placement platform 1. A blocking member 9 is provided between two adjacent connecting ropes. The four corners of the blocking member 9 are respectively connected to the four positioning seats of these two connecting ropes. The blocking member 9 is a flexible member. Specifically, the blocking member 9 is a net bag or a blocking cloth or an airbag or a telescopic frame.

[0043] It should be noted that in Figure 4 , in order to better display the winding member 6 and expose the winding member 6 outside the adjustment groove 11, the lower positioning seat 82 is shown spaced from the placement platform 1 in the figure. In actual working conditions, the winding member 6 can be made to be as hidden as possible in the adjustment groove 11 to ensure that the lower positioning seat 82 abuts against the placement platform 1.

[0044] The blocking member 9 can limit the concrete components to a certain extent and reduce the safety problems caused by the concrete components falling from the placement platform 1 due to accidents during transportation. When the length of the hoisting rope 3 changes, the lower positioning seat 82 slides relative to the hoisting rope 3 as the hoisting rope 3 is wound, so that the gap between the blocking member 9 and the placement platform 1 is always in a small state, thereby better blocking the concrete components. For example, after the front end of the placement platform 1 enters the floor where the concrete components to be used are located, the upper positioning seat 81 can be slid downward so that the blocking member 9 is folded, which is convenient for the operator to take the concrete components on the placement platform 1.

[0045] Please refer to Figure 5 , specifically, the upper positioning seat 81 is slidably sleeved outside the hoisting rope 3, and a fixing bolt 811 is threadedly connected to the upper positioning seat 81. The fixing bolt 811 is arranged along the radial direction of the hoisting rope 3. When the fixing bolt 811 abuts against the hoisting rope 3, the upper positioning seat 81 is fixed relative to the hoisting rope 3. When the position of the upper positioning seat 81 needs to be adjusted, the fixing bolt 811 can be loosened so that the upper positioning seat 81 can freely slide on the hoisting rope 3. Thus, the upper positioning seat 81 is positioned and slidably connected to the hoisting rope 3.

[0046] Please refer to Figure 1 and Figure 6, in order to keep the placing platform 1 stable during blanking, a fixing mechanism 10 is provided at the lower end of the placing platform 1. The fixing mechanism 10 includes a mounting seat 101 for connecting with the placing platform 1, a linkage assembly 102, and clamping blocks 103 slidably connected to the mounting seat 101. There are two clamping blocks 103. After the front end of the placing platform 1 enters the floor where the concrete component to be used is located, when the upper positioning seat 81 slides down and the baffle cloth between the two lifting ropes 3 descends, the linkage assembly 102 drives the two clamping blocks 103 to clamp the floor slab. The placing platform 1 is fixed relative to the corresponding floor, so that the concrete component can be blanked more stably and safely.

[0047] Specifically, referring to Figure 6 , the linkage assembly 102 includes a linkage rod 1021, a force dividing rod 1022, and a linkage rope 1023. The linkage rod 1021 is slidably connected to the mounting seat 101 along the length direction of the placing platform 1. A vertical groove 1011 is formed in the mounting seat 101 in the vertical direction. A slider is slidably connected in the vertical groove 1011. The clamping block 103 is fixedly connected to the slider and thus slidably connected to the mounting seat 101. One clamping block 103 corresponds to one slider. There are two force dividing rods 1022, and one force dividing rod 1022 corresponds to one clamping block 103. The two ends of the force dividing rod 1022 are respectively rotatably connected to the linkage rod 1021 and the clamping block 103. The two ends of the linkage rope 1023 are respectively fixedly connected to the upper end of the positioning seat and the end of the linkage rod 1021 away from the clamping block 103. When the upper positioning seat 81 slides down, under the pulling of the linkage rope 1023, the linkage rod 1021 slides towards the center relative to the placing platform 1, and the clamping blocks 103 approach each other to clamp the floor slab. For the convenience of resetting, a reset spring 104 is provided between the linkage rod 1021 and the mounting seat 101. The reset spring 104 is used to drive the linkage rod 1021 to reset to the position of the linkage rod 1021 before the upper positioning seat 81 slides down when the linkage rope 1023 is slack due to the upward movement of the upper positioning seat 81.

[0048] Please refer to Figure 5 and Figure 6 , in order to make the movement track of the linkage rope 1023 meet the set requirements, a first pulley frame 105 is installed on the lifting rope 3, and the first pulley frame 105 is located above the upper positioning frame. Two second pulley frames 106 are provided at the lower end of the placing platform 1, and both second pulley frames 106 are located at the end of the linkage rod 1021 away from the force dividing rod 1022. The pulleys of the first pulley frame 105 and the pulleys of the first pulley frame 105 are used to guide the linkage rope 1023.

[0049] To compensate for the difference in the moving distances between the upper positioning seat 81 and the linkage rod 1021, a dovetail groove 12 is formed in the lower end face of the placing platform 1. A dovetail block 1071 is slidably connected in the dovetail groove 12, and a movable pulley seat 107 is fixedly arranged on the dovetail block 1071, so that the movable pulley seat 107 is slidably connected to the placing platform 1. And a connecting spring 108 for keeping the movable pulley stationary is arranged between the dovetail block and the placing platform 1. The hoisting rope 3 sequentially bypasses the pulleys of the first pulley frame 105, the pulleys of one second pulley frame 106, the movable pulley on the movable pulley seat 107 and the pulleys of the other second pulley frame 106 and then is fixedly connected to the linkage rod 1021. The elastic force of the connecting spring 108 is greater than the elastic force of the return spring 104.

[0050] When the upper positioning seat 81 just starts to descend, a force is applied to the linkage rod 1021 to pull the linkage rod 1021 to realize the clamping of the clamping block 103. After the clamping block 103 is clamped, the linkage rod 1021 can no longer move forward. At this time, the linkage rope 1023 pulls the movable pulley seat 107 to slide to ensure that the upper positioning seat 81 can descend to the required position.

[0051] Embodiment 2 The difference between Embodiment 2 and Embodiment 1 is that, please refer to Figure 7 , the placing platform 1 includes a fixed part 13 and a rotating part 14. There are two rotating parts 14 and they are respectively located on both sides of the fixed part 13. The rotating part 14 is rotatably connected to the fixed part 13. The connecting block 2 is installed on the rotating part 14, and the fixing mechanism 10 is installed on the fixed part 13. The hoisting rope 3 can be wound by the winding member 6 to make the rotating part 14 rotate relative to the fixed part 13, so as to reduce the area occupied by the placing platform 1 on the horizontal plane, so that it can be hoisted and fed more stably.

[0052] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. An adjustable device for the hoisting platform of prefabricated concrete building components, characterized in that: It includes a placement platform (1) for placing concrete components, a connecting block (2) arranged on the placement platform (1), a lifting rope (3) connected to the connecting block (2), and a lifting assembly (4) for lifting the lifting rope (3). There are four connecting blocks (2) which are distributed corresponding to the four corners of the placement platform (1). The connecting block (2) is positioned and slidably installed on the placement platform (1) through an adjusting assembly (5). A spirit level (7) is embedded in the lower end surface of the placement platform (1). A winding member (6) for winding the lifting rope (3) is arranged on the connecting block (2). After a concrete component is placed on the placement platform (1), the connecting block (2) slides on the placement platform (1) until the placement platform (1) is in a horizontal state, and the lifting rope (3) is wound by the winding member (6).

2. The platform adjusting device for hoisting prefabricated concrete building components according to claim 1, characterized in that: The lifting assembly (4) includes a first lifting hook (44) and a second lifting hook (45). The first lifting hook (44) and the second lifting hook (45) are arranged at intervals along the length direction of the lifting assembly (4). The two lifting ropes (3) located at the front end of the placement platform (1) are the first lifting ropes (3), and the two lifting ropes (3) located at the rear end of the placement platform (1) are the second lifting ropes (3). The first lifting rope (3) is connected to the first lifting hook (44), and the second lifting rope (3) is connected to the second lifting hook (45).

3. An adjustable device for the hoisting platform of prefabricated concrete building components according to claim 2, characterized in that: The second lifting hook (45) is located in front of the first lifting hook (44). The connecting block (2) corresponding to the first lifting rope (3) is located on the inner plane of the connecting block (2) corresponding to the second lifting rope (3).

4. An adjustable device for hoisting prefabricated concrete building components according to claim 3, characterized in that: The connecting block (2) is located on the edge of the placement platform (1), and the sliding direction of the connecting block (2) is parallel to the length direction of the placement platform (1).

5. The platform adjusting device for hoisting prefabricated concrete building components according to claim 1, characterized in that: A positioning seat is installed on the lifting rope (3). A blocking member (9) for blocking the concrete component is arranged between the positioning seats of the two lifting ropes (3). At least one positioning seat corresponds to the upper and lower ends of one blocking member (9).

6. The platform adjusting device for hoisting prefabricated concrete building components according to claim 5, characterized in that: The positioning seat located at the upper end of the blocking member (9) is the upper positioning seat (81), and the positioning seat located at the lower end of the blocking member (9) is the lower positioning seat (82). The upper positioning seat (81) is positioned and slidably connected to the lifting rope (3), and the lower positioning seat (82) is slidably connected to the lifting rope (3), and the lower positioning seat (82) abuts against the placement platform (1).

7. An adjustable device for the hoisting platform of prefabricated concrete building components according to claim 6, characterized in that: A fixing mechanism (10) is arranged at the lower end of the placement platform (1). The fixing mechanism (10) includes a mounting seat (101) for connecting with the placement platform (1), a clamping block (103) slidably connected to the mounting seat (101), and a linkage assembly (102). When the placement platform (1) is transported to the required floor, the linkage assembly (102) is used to drive the two clamping blocks (103) to slide relative to the mounting seat (101) to clamp the floor slab.

8. An adjustable device for the hoisting platform of prefabricated concrete building components according to claim 7, characterized in that: When the upper positioning seat (81) slides down and the blocking cloth between the two lifting ropes (3) drops, the linkage assembly (102) drives the two clamping blocks (103) to clamp the floor slab.

9. The platform adjusting device for hoisting prefabricated concrete building components according to claim 8, characterized in that: The linkage assembly (102) includes a linkage rod (1021) slidably connected to the mounting base (101), a force dividing rod (1022) rotatably connected to both the linkage rod (1021) and the clamping block (103), and a linkage rope (1023) connected between the upper end of the upper positioning seat (81) and the linkage rod (1021); when the upper positioning seat (81) slides downward, the linkage rope (1023) is driven from relaxation to tension to drive the linkage rod (1021) to slide relative to the mounting base (101).

10. The platform adjusting device for hoisting prefabricated concrete building components according to claim 9, characterized in that: A first pulley frame (105) is installed on the hoisting rope (3), and the first pulley frame (105) is located above the upper positioning frame; a second pulley frame (106) is provided at the lower end of the placing platform (1), and the second pulley frame (106) is located at one end of the linkage rod (1021). The first pulley frame (105) and the second pulley frame (106) are used to guide the linkage rope (1023).

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