Construction prefabricated laminated slab construction hoist

Abstract

This utility model discloses a hoist for the construction of precast composite slabs, including a hoisting frame. An upward-opening hoisting box is internally engaged at the lower end of the hoisting frame and slidably connected inside the hoisting frame. Hoisting ropes are connected to the left and right sides of the upper end of the hoisting box, and the other ends of the two hoisting ropes are connected to a hoisting chuck. The hoisting chuck has a rope-winding groove on its cylindrical outer wall, allowing the hoisting box to slide inside the hoisting frame. Through the cooperation of the hoisting ropes and the hoisting chuck, the precast slabs are vertically transported, ensuring efficient and stable transport. A top plate inside the hoisting box is connected to the hoisting box via elastic support, making the placement and removal of the precast slabs more convenient and maintaining stability during transport. Through the linkage of the lifting frame and the limiting pressure plate, the hoisting box automatically presses down as it rises, effectively preventing accidental slippage of the precast slabs during transport and improving safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of building construction, specifically relating to a hoist for the construction of precast composite slabs. Background Technology

[0002] In the construction industry, the handling and installation of precast composite slabs is a crucial step, directly impacting construction efficiency and safety. Traditional manual handling methods are not only time-consuming and labor-intensive but also pose safety risks, especially in high-rise building construction where the limitations of manual handling are even more pronounced. Therefore, developing a hoist capable of efficiently and safely handling precast composite slabs is of paramount importance.

[0003] In existing technologies, most hoists lack dedicated fixing and balancing devices when transporting precast composite slabs. This leads to the slabs easily shifting during transport, affecting efficiency. Furthermore, the lack of automatic limit and protection mechanisms poses a risk of the precast slabs falling during hoisting, creating safety hazards for construction workers and those below. Some hoists also have complex structures, resulting in accelerated wear between components, high maintenance and replacement costs, and impacting long-term efficiency.

[0004] In view of the shortcomings of existing technologies, this patent proposes a dedicated hoist for the construction of precast composite slabs. Through innovative structural design and functional optimization, this hoist aims to solve the problems of existing hoisting equipment in terms of handling efficiency, safety, and maintenance costs. Utility Model Content

[0005] The purpose of this utility model is to provide a hoist for the construction of precast composite slabs, so as to solve the problems of low handling efficiency and poor safety of existing composite slab hoists mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hoist for the construction of precast composite slabs, comprising a hoisting frame, a hoisting box with an upward opening being fitted inside the lower end of the hoisting frame, and the hoisting box being slidably connected inside the hoisting frame; hoisting ropes are connected to the left and right sides of the upper end of the hoisting box; the other ends of the two hoisting ropes are connected to a hoisting chuck; a rope winding groove is provided inside the cylindrical outer wall of the hoisting chuck and is located directly above the center of the upper end of the hoisting frame; both hoisting ropes are wound inside the rope winding groove; a hoisting motor is rotatably connected to the rear end of the hoisting chuck via a rotating shaft; and the hoisting motor is fixedly connected to the rear side of the center of the upper end of the hoisting frame via a crossbeam provided at the center of the upper end of the hoisting frame; and multiple precast slabs are arranged inside the upper end of the hoisting box.

[0007] Preferably, the upper sides of both ends of the lifting frame are provided with limit frames, and the two limit frames are rotatably connected to side pulleys through limit shafts.

[0008] Preferably, a limiting groove is provided on the right side of the upper center of the crossbeam of the lifting frame, and an upper pulley is rotatably connected to the upper end of the limiting groove through a limiting shaft.

[0009] Preferably, the lifting rope passes through the limiting frame and the limiting groove from top to bottom, and is engaged with the side pulley at the end away from the lifting chuck and the upper pulley at the end near the lifting chuck, and the lifting rope is in rolling connection with the side pulley and the limiting groove.

[0010] Preferably, a top plate is snapped into the inside of the lifting box, and the top plate is slidably connected inside the lifting box. Support feet are connected to the four corners at the lower end of the lifting box.

[0011] Preferably, each of the four support legs is provided with an upward push spring, and the upper ends of the four upward push springs are attached to the four corners of the lower end of the placement top plate. The placement top plate is elastically connected to the inside of the lifting box through the four upward push springs.

[0012] Preferably, pressure plate shafts are rotatably connected to the interior of both the left and right sides of the upper end of the lifting box, and lifting frames are fixedly connected to the center of the two pressure plate shafts at the ends away from the precast slab.

[0013] Preferably, the lifting rope is connected to the lifting box via a lifting frame, and a limiting pressure plate is fixedly connected to the upper end of the support foot near the precast slab. Both the lifting frame and the limiting pressure plate are rotatably connected to the lifting box via a pressure plate pivot.

[0014] Compared with the prior art, this utility model provides a hoist for the construction of precast composite slabs, which has the following advantages:

[0015] 1. Sliding connection design between the lifting box and the lifting frame: The lifting box can slide inside the lifting frame. Through the cooperation of the lifting rope and the lifting chuck, the precast slab can be vertically transported, ensuring the efficiency and stability of the transportation process.

[0016] 2. Lifting rope guiding system: The combination of the limiting frame and side pulley, and the limiting groove and upper pulley reduces the resistance of the lifting rope during movement, while also reducing wear between the lifting rope and the lifting frame, thus improving the overall structural durability.

[0017] 3. Automatic balancing lifting system: Guided by the limit frame, side pulleys and top pulley, the lifting rope can act on both sides of the lifting box simultaneously and evenly, maintaining balance during the lifting process and avoiding tilting or shaking of the precast slab during transportation.

[0018] 4. Elastic support for the placement top plate design: The placement top plate inside the lifting box is connected to the lifting box through elastic support, making the placement and removal of precast slabs more convenient, while maintaining the stability of the precast slabs during transportation.

[0019] 5. Automatic limit plate system: Through the linkage between the lifting frame and the limit plate, the plate automatically presses down as the lifting box rises, effectively preventing the precast slab from accidentally slipping during the handling process and improving the safety of the handling process.

[0020] 6. High-efficiency coordination between lifting motor drive and lifting chuck: The lifting motor drives the lifting chuck, and the vertical movement of the lifting box is achieved by winding and releasing the lifting rope, which improves the handling efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the composite plate lifting machine of this utility model.

[0022] Figure 2 This is a schematic diagram of the lifting rope connection structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the lifting box connection structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the pressure plate and shaft connection structure of this utility model.

[0025] In the diagram: 1. Lifting frame; 2. Lifting box; 3. Lifting rope; 4. Lifting chuck; 5. Lifting motor; 6. Precast slab; 7. Limiting frame; 8. Side pulley; 9. Limiting groove; 10. Top pulley; 11. Top plate placement; 12. Support foot; 13. Push spring; 14. Pressure plate pivot; 15. Lifting frame; 16. Limiting pressure plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figures 1-4The hoist shown is used for the construction of precast composite slabs. It includes a hoisting frame 1, with an upward-opening hoisting box 2 slidably connected inside the lower end of the hoisting frame 1. Hoisting ropes 3 are connected to the left and right sides of the upper end of the hoisting box 2, and the other ends of the two hoisting ropes 3 are connected to a hoisting chuck 4. The hoisting chuck 4 has a rope-winding groove on its cylindrical outer wall, located directly above the center of the upper end of the hoisting frame 1. Both hoisting ropes 3 are wound inside the rope-winding groove. A hoisting motor 5 is rotatably connected to the rear end of the hoisting chuck 4 via a rotating shaft, and the hoisting motor 5 is located at the center of the upper end of the hoisting frame 1. The crossbeam is fixedly connected to the rear side of the upper center of the lifting frame 1. Multiple precast slabs 6 are installed inside the upper end of the lifting box 2. During the construction process, the precast slabs 6 can be transported by the lifting machine to assist in the construction. When transporting the precast slabs 6, multiple precast slabs 6 are placed inside the upper end of the lifting box 2. Then, the lifting motor 5 is turned on. The lifting motor 5 drives the lifting chuck 4 to rotate. Through the rotation of the lifting chuck 4, the two lifting ropes 3 are wound into the rope groove, thereby lifting the lifting box 2 upward and allowing the lifting box 2 to slide inside the lifting frame 1, thereby transporting multiple precast slabs 6.

[0028] Preferably, limit frames 7 are provided on the upper sides of both the left and right ends of the lifting frame 1. Side pulleys 8 are rotatably connected inside the two limit frames 7 through limit shafts. A limit groove 9 is provided on the right side of the upper center of the crossbeam of the lifting frame 1. An upper pulley 10 is rotatably connected inside the upper end of the limit groove 9 through a limit shaft. Since the lifting rope 3 passes through the limit frames 7 and the limit groove 9 and is engaged inside the side pulley 8 away from the lifting chuck 4 and the upper pulley 10 near the lifting chuck 4, and the lifting rope 3 is tumblingly connected to the side pulley 8 and the limit groove 9, the two lifting ropes 3 can be connected to the lifting frame 1 through the two side pulleys 8 and the upper pulley 10. When the lifting chuck 4 rotates, they can simultaneously wind around the rope groove inside the lifting chuck 4. This can reduce the resistance of the lifting rope 3 moving up and down, avoid wear between the lifting frame 1 and the lifting rope 3, improve the service life of the lifting frame 1 and the lifting rope 3, and also ensure that the left and right ends of the lifting box 2 are lifted at the same time, ensuring the balance of the lifting box 2 during the lifting process.

[0029] Preferably, a top plate 11 is snapped into the inside of the lifting box 2, and the top plate 11 is slidably connected inside the lifting box 2. Support feet 12 are connected to the four corners of the lower end of the lifting box 2. Each of the four support feet 12 is equipped with an upward-pushing spring 13, and the upper ends of the four upward-pushing springs 13 are attached to the four corners of the lower end of the top plate 11. The top plate 11 is elastically connected to the inside of the lifting box 2 through the four upward-pushing springs 13. During the placement of the precast slab 6, because the top plate 11 is elastically connected to the inside of the lifting box 2 through the four upward-pushing springs 13, when the precast slab 6 is not placed... When placing the top plate 11, the top plate 11 slides to the topmost position, making it easier to place the precast slab 6. When the precast slab 6 is placed on the top plate 11, the top plate 11 slides downward under the gravity of the precast slab 6. This allows the precast slab 6 to slide into the lifting box 2 to prevent it from falling, and also keeps the precast slab 6 on the upper side inside the lifting box 2, so that the next precast slab 6 can still be easily placed in. When multiple precast slabs 6 are taken out of the lifting box 2, the precast slab 6 on the upper side of the mouth is always on the upper side inside the lifting box 2, which also makes it easier to take out the precast slab 6.

[0030] Preferably, pressure plate shafts 14 are rotatably connected to the interior of both the left and right sides of the upper end of the lifting box 2. Lifting frames 15 are fixedly connected to the center of the two pressure plate shafts 14 at the ends away from the precast slabs 6. The lifting rope 3 is connected to the lifting box 2 through the lifting frames 15. A limiting pressure plate 16 is fixedly connected to the upper end of the support leg 12 near the precast slab 6. The lifting frame 15 and the limiting pressure plate 16 are rotatably connected to the lifting box 2 through the pressure plate shafts 14. During the lifting of the lifting box 2, the lifting frame 15 rotates upward around the pressure plate shafts 14 under the lifting of the lifting rope 3, and drives the limiting pressure plate 16 to rotate downward through the pressure plate shafts 14, so that the limiting pressure plate 16 can be flipped to the upper end of the opening of the lifting box 2, thereby blocking multiple precast slabs 6 inside the lifting box 2, preventing the precast slabs 6 from falling from the upper end of the lifting box 2, and ensuring the safe handling of the precast slabs 6.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hoist for the construction of precast composite slabs, characterized in that, The device includes a lifting frame (1), with an upward-facing lifting box (2) attached to the lower end of the lifting frame (1). The lifting box (2) is slidably connected inside the lifting frame (1). Lifting ropes (3) are connected to the left and right sides of the upper end of the lifting box (2). The other ends of the two lifting ropes (3) are connected to a lifting chuck (4). The cylindrical outer wall of the lifting chuck (4) has a rope winding groove, which is located directly above the center of the upper end of the lifting frame (1). The two lifting ropes (3) are wound inside the rope winding groove. The rear end of the lifting chuck (4) is rotatably connected to a lifting motor (5) via a rotating shaft. The lifting motor (5) is fixedly connected to the rear side of the center of the upper end of the lifting frame (1) via a crossbeam set at the center of the upper end of the lifting frame (1). Multiple precast slabs (6) are set inside the upper end of the lifting box (2).

2. The hoist for construction of precast composite slabs according to claim 1, characterized in that: The lifting frame (1) is provided with limit frames (7) on the upper sides of both the left and right ends, and the two limit frames (7) are rotatably connected to side pulleys (8) through limit shafts.

3. The hoist for construction of precast composite slabs according to claim 2, characterized in that: A limiting groove (9) is provided on the right side of the upper center of the crossbeam of the lifting frame (1), and an upper pulley (10) is rotatably connected to the upper end of the limiting groove (9) through a limiting shaft.

4. The hoist for construction of precast composite slabs according to claim 3, characterized in that: The lifting rope (3) runs through the limiting frame (7) and the limiting groove (9) from top to bottom, and is engaged with the side pulley (8) at the end away from the lifting chuck (4) and the upper pulley (10) at the end close to the lifting chuck (4). The lifting rope (3) is in rolling connection with the side pulley (8) and the limiting groove (9).

5. A hoist for construction of precast composite slabs according to claim 1, characterized in that: The lifting box (2) has a top plate (11) inside, and the top plate (11) is slidably connected inside the lifting box (2). The four corners of the lower end of the lifting box (2) are connected to support feet (12).

6. A hoist for construction of precast composite slabs according to claim 5, characterized in that: Each of the four support feet (12) is equipped with an upward push spring (13), and the upper ends of the four upward push springs (13) are attached to the four corners of the lower end of the placement top plate (11). The placement top plate (11) is elastically connected to the inside of the lifting box (2) through the four upward push springs (13).

7. A hoist for construction of precast composite slabs according to claim 6, characterized in that: The upper left and right sides of the lifting box (2) are rotatably connected to pressure plate shafts (14), and the center of the two pressure plate shafts (14) away from the precast plate (6) is fixedly connected to a lifting frame (15).

8. A hoist for construction of precast composite slabs according to claim 7, characterized in that: The lifting rope (3) is connected to the lifting box (2) through the lifting frame (15). The upper end of the support foot (12) is fixedly connected to the side of the precast plate (6) with a limiting pressure plate (16). The lifting frame (15) and the limiting pressure plate (16) are rotatably connected to the lifting box (2) through the pressure plate pivot (14).

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