A concrete precast panel suspension lifting device

Abstract

The application discloses a kind of concrete prefabricated panel's suspension lifting device, comprising: vertical guide rail, the guide rail inside is equipped with sliding mechanism, for supporting the up and down sliding of lifting frame;Lifting frame is slidably arranged in the guide rail;Rotary frame, its end is connected with pull rope;Pulley is arranged at the top of the guide rail, and the pull rope changes direction by passing pulley;Winch is installed at the bottom of the guide rail, for winding and unwinding the pull rope;Wherein, one end of the pull rope is fixedly connected to rotary frame, and the other end is wound to winch after passing pulley;Two clamps are slidably arranged below the rotary frame, for clamping concrete prefabricated panel;Telescopic cylinder is connected between the two clamps, and the clamping and loosening of the two clamps are controlled by the telescopic action thereof;Compared with prior art, the application can complete the clamping, lifting and unloading of panel in a short time, and meet the needs of fast-paced construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of suspension devices, and particularly relates to a suspension lifting device for a prefabricated concrete slab. BACKGROUND

[0002] The prefabricated concrete slab is widely used as a building material in modern buildings, and is widely used in various building structures due to its advantages of standardized production, fast construction speed, controllable quality and the like. In the building construction process, the suspension operation of the prefabricated concrete slab is an indispensable link, and is mainly suitable for occasions such as high-rise buildings, large workshops, bridges, tunnels and the like which require rapid installation of a large number of prefabricated components.

[0003] In the prior art, a common suspension method is to clamp the edge of the slab by a clamping device to lift. However, since the prefabricated concrete slab has a large self-weight, cracking is prone to occur during clamping and lifting, and the edge part is often fragile, which can cause the phenomenon of edge collapse. In order to solve the problem of slab cracking caused by clamping and lifting, the prior art usually adopts a method of adding a supporting device at the center of the slab for improvement. However, this method needs to install the supporting device after the slab is lifted, and the operation process is relatively complicated, and the construction difficulty and time cost are increased.

[0004] Another suspension method to avoid slab cracking is to first stand the slab upright and then suspend it. Although this method can effectively reduce the stress area of the slab during lifting, thereby reducing the cracking risk, since the prefabricated concrete slab is usually in a horizontal state when in use, the standing operation is needed before suspension, and the laying down operation is needed after installation. These additional operations not only need additional devices and equipment support, but also increase the construction complexity and cost.

[0005] Therefore, it is necessary to provide a suspension lifting device for a prefabricated concrete slab to solve the problems in the background art. SUMMARY

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a suspension lifting device for a prefabricated concrete slab, comprising:

[0007] A vertical guide rail is internally provided with a sliding mechanism for supporting the up-and-down sliding of a lifting frame;

[0008] A lifting frame is slidingly arranged in the guide rail;

[0009] A rotating frame has a pull rope connected to the distal end thereof;

[0010] A pulley is arranged at the top of the guide rail, and the pull rope changes direction by passing through the pulley;

[0011] A winch is installed at the bottom of the guide rail to wind and unwind the pull rope.

[0012] One end of the pull rope is fixedly connected to the rotating frame, and the other end is wound to the winch after passing through the pulley.

[0013] Two clamping plates are slidably arranged below the rotating frame to clamp the concrete precast slab.

[0014] A telescopic cylinder is connected between the two clamping plates to control the clamping and loosening of the two clamping plates through the telescopic action.

[0015] Further, the lifting frame is provided with a locking mechanism for locking the position of the lifting frame.

[0016] Further, the clamping plates are fixed with inclined inclined plates below, and the two inclined plates can shovel the slab when the two clamping plates approach each other.

[0017] Further, the inclination angle of the inclined plate is °

[0018] Further, rotating rods are rotatably arranged on the front and back of the side of the rotating frame away from the lifting frame, and extension rods are slidably arranged in each of the rotating rods.

[0019] Further, a connecting shaft is arranged on the side of the rotating frame away from the lifting frame, a rotating disc is rotatably arranged in the connecting shaft, a guide rod is fixed to the side of the rotating disc away from the rotating frame, and the pull rope is connected to the lower part of the rotating disc.

[0020] Further, guide shafts are slidably connected in the guide rod, and the guide shafts are respectively penetrated through the through grooves of the two rotating rods and fixed to the extension rods.

[0021] Further, a sliding groove is formed in the extension rod, and a plurality of support rollers are slidably arranged between the two extension rods.

[0022] Further, two X-shaped connecting rods are hingedly connected to the two ends of the support roller, the ends of the adjacent connecting rods at the same end are hingedly connected together, and the end of the support roller closest to the rotating rod is also hingedly connected to a group of connecting rods, and the group of connecting rods is hingedly connected to the side of the rotating frame.

[0023] Further, the surface of the support roller is covered with a rubber layer.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] In the present application, the device controls the winding and unwinding of the pull rope through the winch, realizes the up-down and rotating action of the lifting frame and the rotating frame, the whole process is simple to operate, greatly reduces the complexity of manual operation, and improves the work efficiency.

[0026] In the present application, the rotatable design of the rotating frame allows the board to be suspended vertically, with the center of gravity closer to the guide rail during lifting, reducing the risk of shaking and tilting, and improving the stability of lifting.

[0027] In the present application, the sliding arrangement of the rotating rod and the extension rod, and the uniform distribution of the supporting rollers under the action of the connecting rod, make the device adaptable to boards of different sizes and weights, improving the flexibility and universality of use. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural diagram of a concrete prefabricated board suspension lifting device;

[0029] Figure 2 It is a schematic diagram of the overall structure of the lifting frame;

[0030] Figure 3 It is a schematic diagram of the side structure of the lifting frame in horizontal state;

[0031] Figure 4 It is a schematic diagram of the side structure of the lifting frame in upward rotating state;

[0032] In the figure: 1, guide rail; 2, lifting frame; 3, rotating frame; 31, rotating rod; 32, extension rod; 33, connecting shaft; 34, rotating disc; 35, guide rod; 36, guide shaft; 37, through slot; 38, sliding groove; 39, connecting rod; 4, pull rope; 5, pulley; 6, winch; 7, clamping plate; 71, inclined plate; 8, telescopic cylinder; 9, supporting roller. DETAILED DESCRIPTION

[0033] Please refer to Figures 1-4 In the embodiment of the present application, a concrete prefabricated board suspension lifting device comprises:

[0034] A vertical guide rail 1 is internally configured with a sliding mechanism for supporting the up and down sliding of the lifting frame 2;

[0035] A lifting frame 2 is slidingly arranged in the guide rail 1;

[0036] A rotating frame 3 has a pull rope 4 connected at its end;

[0037] A pulley 5 is arranged at the top of the guide rail 1, and the pull rope 4 changes direction around the pulley 5;

[0038] A winch 6 is installed at the bottom of the guide rail 1 for winding and unwinding the pull rope 4;

[0039] One end of the pull rope 4 is fixedly connected to the rotating frame 3, and the other end is wound to the winch 6 after passing around the pulley 5;

[0040] Two clamping plates 7 are slidingly arranged below the rotating frame 3 for clamping the concrete precast slabs;

[0041] A telescopic cylinder 8 is connected between the two clamping plates 7, and the clamping and releasing of the two clamping plates 7 are controlled by the telescopic action of the telescopic cylinder 8.

[0042] When the winch 6 loosens the pull rope 4, the lifting frame 2 descends and the rotating frame 3 rotates to the horizontal state, and the two clamping plates 7 can clamp the flat slabs through the telescopic cylinder 8. When the winch 6 winds the pull rope 4, the rotating frame 3 rotates upward, so that the clamping plates 7 stand up, and the center of gravity of the slabs is closer to the guide rail. The winch 6 continues to wind the pull rope 4 to pull the lifting frame 2 upward, thereby stably lifting the slabs.

[0043] In the embodiment, the lifting frame 2 is provided with a locking mechanism for locking the position of the lifting frame 2 when needed.

[0044] In the embodiment, the clamping plates 7 are fixed with inclined inclined plates 71 below, and the two inclined plates 71 can shovel the slabs when the two clamping plates 7 approach each other. The two sides of the slabs can be clamped between the clamping plates 7 and the inclined plates 71, thereby fixing the up-down and transverse positions of the slabs.

[0045] In the embodiment, the inclination angle of the inclined plate (71) is 45°. It can not only ensure sufficient shoveling force when clamping the slabs, but also avoid unnecessary pressure or damage to the slabs during lifting due to excessive angle.

[0046] In the embodiment, the rotating frame 3 is provided with rotating rods 31 in front and back of the side away from the lifting frame 2, respectively. An extension rod 32 is slidingly arranged in each of the rotating rods 31, and a supporting roller 9 is arranged in the two extension rods 32.

[0047] By adjusting the rotation angle of the rotating rod 31 and the length of the extension rod 32, the supporting roller 9 can support the middle part of the slabs, thereby avoiding damage such as cracking and breaking caused by stress on the two sides of the slabs.

[0048] In the embodiment, the rotating frame 3 is provided with a connecting shaft 33 away from the lifting frame 2, a rotating disc 34 is rotatably arranged in the connecting shaft 33, a guide rod 35 is fixed to the side away from the rotating frame 3 of the rotating disc 34, and the pull rope 4 is connected to the lower part of the rotating disc 34.

[0049] In the embodiment, a guide shaft 36 is slidingly connected in the guide rod 35 and penetrates the front and back of the guide rod 35, a through slot 37 is formed in the rotating rod 31, and the guide shaft 36 penetrates the through slots 37 of the two rotating rods 31 and is fixed to the extension rod 32.

[0050] The rotating rod 31 is arranged offset to the connecting shaft 33, when the winch 6 winds the pull rope 4, the rotating disc 34 will be subjected to a torque to make the guide rod 35 rotate downward and make the extension rod 32 extend, when the guide rod 35 rotates to the supporting roller 9 to press the plate and cannot continue to rotate, the pull rope 4 will pull the rotating frame 3 to rotate upward, thereby making the plate stand up.

[0051] In the embodiment, the extension rod 32 is provided with a sliding groove 38, and a plurality of supporting rollers 9 are slidingly arranged between the two extension rods 32.

[0052] In the embodiment, the supporting roller 9 is hingedly connected with two X-shaped connecting rods 39 at both ends, and the ends of the adjacent connecting rods 39 at the same end are hingedly connected together, and the end of the supporting roller 9 closest to the rotating rod 31 is further hingedly connected with a group of connecting rods 39, which are hingedly connected to one side of the rotating frame 3.

[0053] That is, when the extension rod 32 extends, the supporting rollers 9 will uniformly increase the spacing under the action of the connecting rods 39, thereby making the supporting rollers 9 uniformly distributed in the extension rod 32 abutting to the plate, so as to uniformly support the plate.

[0054] In the embodiment, the surface of the supporting roller 9 is coated with a rubber layer. That is, it can play a buffering role between the supporting roller 9 and the plate, and can also increase the sliding friction between the supporting roller 9 and the plate, so as to ensure that the plate will not slide forward and backward.

[0055] In specific implementation:

[0056] When the winch 6 is operated to loosen the pull rope 4, the lifting frame 2 is lowered to the ground, and the rotating frame 3 is rotated to a horizontal state under the action of gravity, the telescopic cylinder 8 is started to push the two clamping plates 7 to move closer to each other, and the inclined plate 71 scoops up the plate and clamps it between the clamping plate 7 and the inclined plate 71, thereby fixing the up-down and transverse positions of the plate.

[0057] After confirming that the plate is stably clamped and supported, the winch 6 is operated to wind the pull rope 4, as the pull rope 4 is tightened, the rotating disc 34 is subjected to a torque to make the guide rod 35 rotate downward, thereby pushing the extension rod 32 to extend, and the supporting roller 9 further presses the plate, when the guide rod 35 rotates to the supporting roller 9 to press the plate and cannot continue to rotate, the pulling force of the pull rope 4 will start to pull the rotating frame 3 to rotate upward, so as to make the clamping plate 7 and the clamped plate stand up, and the center of gravity of the plate is closer to the guide rail 1, and the pull rope 4 is continuously wound, the lifting frame 2 is lifted, and the rotating frame 3 keeps the plate in a standing state, thereby stably lifting the plate to the required height.

[0058] When the board is lifted to the specified height, the lifting frame 2 is locked at the current position to ensure that the board is stably hung, the winch 6 is loosened, the rotating frame 3 is rotated downward to the horizontal state, the telescopic cylinder 8 is started to release the board from the clamping plate 7, and the board slides out of the inclined plate 71.

[0059] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical scheme and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A suspension and lifting device for precast concrete slabs, characterized in that, include: A vertical guide rail (1) is provided, and a sliding mechanism is provided inside the guide rail (1) to support the up and down sliding of the lifting frame (2); The lifting frame (2) is slidably disposed within the guide rail (1); A rotating frame (3) has a pull rope (4) connected to its end. A pulley (5) is located at the top of the guide rail (1), and the pull rope (4) passes around the pulley (5) to change direction; A winch (6) is installed at the bottom of the guide rail (1) and is used to wind up and unwind the pull rope (4). One end of the pull rope (4) is fixedly connected to the rotating frame (3), and the other end passes over the pulley (5) and is wound up to the winch (6). Two clamping plates (7) are slidably disposed below the rotating frame (3) for clamping precast concrete slabs; Telescopic cylinder (8) is connected between the two clamping plates (7) and controls the clamping and loosening of the two clamping plates (7) through its telescopic movement; The rotating frame (3) has rotating rods (31) arranged in front and back on the side away from the lifting frame (2). Each rotating rod (31) has an extension rod (32) slidably arranged in it, and a support roller (9) is arranged in the two extension rods (32). The rotating frame (3) is provided with a connecting shaft (33) on the side away from the lifting frame (2), and a turntable (34) is rotatably provided in the connecting shaft (33). A guide rod (35) is fixed on the side of the turntable (34) away from the rotating frame (3), and the pull rope (4) is connected to the lower part of the turntable (34). The guide rod (35) is slidably connected to a guide shaft (36) that passes through its front and back. The rotating rod (31) has a through groove (37). The guide shaft (36) passes through the through grooves (37) of the two rotating rods (31) and is fixed to the extension rod (32).

2. The suspension and lifting device for precast concrete slabs according to claim 1, characterized in that, The lifting frame (2) is equipped with a locking mechanism for locking the position of the lifting frame (2).

3. The suspension and lifting device for precast concrete slabs according to claim 1, characterized in that, An inclined plate (71) is fixed below the clamping plate (7). When the two clamping plates (7) come close to each other, the two inclined plates (71) can lift the plate.

4. The suspension and lifting device for precast concrete slabs according to claim 3, characterized in that, The inclined plate (71) has an inclination angle of 45°.

5. The suspension and lifting device for precast concrete slabs according to claim 1, characterized in that, The extension rod (32) has a groove (38) and multiple support rollers (9) are slidably arranged between the two extension rods (32).

6. The suspension and lifting device for precast concrete slabs according to claim 5, characterized in that, The support roller (9) has two X-shaped connecting rods (39) hinged at both ends, and the ends of adjacent connecting rods (39) at the same end are hinged together. The support roller (9) closest to the rotating rod (31) also has a set of connecting rods (39) hinged at its end, which is hinged to one side of the rotating frame (3).

7. The suspension and lifting device for precast concrete slabs according to claim 1, characterized in that, The surface of the support roller (9) is covered with a rubber layer.

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