Laminated slab hoisting device

Abstract

The utility model relates to the technical field of hoisting equipment, in particular to a laminated slab hoisting device which comprises a base plate, a hoisting ring is arranged above the base plate, at least two hoisting frames are arranged on the base plate in a sliding mode in the length direction, a first sliding groove is further formed in the base plate in the length direction, and each hoisting frame comprises a movable beam located above the base plate. L-shaped connecting plates which penetrate through the first sliding grooves in a sliding mode are fixed to the two ends of the movable beam, a U-shaped supporting plate is fixed between the bottoms of the L-shaped connecting plates and comprises two vertically-arranged arm plates and a transversely-arranged bottom plate, and a driving mechanism used for driving the movable beam to move in a reciprocating mode along the first sliding grooves is further installed on the top face of the base plate. The device can uniformly support and hoist the laminated slab without adopting a hoisting point on the laminated slab, so that the damage to the laminated slab is reduced, the stress of the laminated slab is uniform, and the risk of deformation caused by the influence of the gravity of the laminated slab is reduced.

Description

Composite slab hoisting device Technical Field

[0001] This utility model relates to the technical field of hoisting equipment, and in particular to a hoisting device for composite slabs. Background Technology

[0002] Currently, prefabricated buildings are developing rapidly, and composite slabs are widely used as prefabricated floor slabs in prefabricated buildings. The conventional hoisting method for composite slabs is to use cranes to lift them with ropes and hooks. The hooks are attached to the steel reinforcement frames on the composite slab, and the steel reinforcement frames serve as lifting points. This means that multiple points of tension are used to lift the composite slab.

[0003] However, composite slabs come in various types and weights, and stress deformation or damage can easily occur at the lifting points on the slabs. Furthermore, the slabs themselves may bend and deform under their own weight. Therefore, a new type of composite slab lifting device is needed to solve these problems. Summary of the Invention

[0004] In order to balance the stress on the composite slab and ensure the integrity of the composite slab during the hoisting process, this utility model provides a composite slab hoisting device.

[0005] The composite slab hoisting device provided by this utility model adopts the following technical solution:

[0006] A composite slab hoisting device includes a base plate, a hoisting ring mounted on the top of the base plate, at least two hangers slidably disposed on the base plate along its length, and a sliding groove firstly formed on the base plate along its length. Each hanger includes a movable beam located above the base plate, with L-shaped connecting plates fixed at both ends of the movable beam and slidingly passing through the sliding groove firstly. A U-shaped support plate is fixed between the bottoms of the L-shaped connecting plates, and the U-shaped support plate includes two vertically arranged arm plates and a horizontally arranged base plate. A drive mechanism for driving the movable beam to reciprocate along the sliding groove firstly is also mounted on the top surface of the base plate.

[0007] By adopting the above technical solution, workers use lifting machinery and lifting rings to lift the device above the composite slab, and then lower the device until the top surface of the base plate is lower than the bottom surface of the composite slab. Then, the drive mechanism drives the hanger to move and fit onto the composite slab, controlling the position of the hanger on the composite slab so that multiple hangers are evenly distributed relative to the composite slab, so that the composite slab is evenly supported during subsequent lifting. This device can evenly support and lift the composite slab, eliminating the need for lifting points on the composite slab, thus reducing damage to the composite slab. The composite slab is subjected to uniform force, reducing the risk of deformation due to its own weight.

[0008] Optionally, a limiting mechanism is installed on the arm plate to cooperate with the base plate to fix the composite plate. The limiting mechanism includes a pressure plate that is vertically slidably installed on the arm plate.

[0009] By adopting the above technical solution, the pressure plate and the base plate are used to fix the composite plate, making the composite plate more stable during the hoisting process.

[0010] Optionally, a second sliding groove is vertically opened on the upper edge of the arm plate, and a pressure plate is horizontally inserted through the second sliding groove. A compression spring is connected between the pressure plate and the bottom wall of the second sliding groove. A locking tooth is fixed on the left and right sides of the pressure plate. A receiving cavity is provided on the left and right sides of the second sliding groove. A rack that cooperates with the locking tooth is horizontally slidably installed in the receiving cavity. A compression spring is provided between the rack and the inner wall of the receiving cavity. A third sliding groove is horizontally opened on the outer wall of the arm plate and communicates with the receiving cavity. A lever that slides through the third sliding groove is fixedly connected to the side wall of the rack.

[0011] By adopting the above technical solution, before hoisting, the pressure plate is moved downward and pressed against the top surface of the composite plate. During the downward movement of the pressure plate, the locking teeth squeeze the rack to move to both sides, and the second compression spring drives the rack to approach the locking teeth until the pressure plate stops. At this time, the locking teeth and the rack are engaged again. At this time, the first compression spring is in a compressed state, and the pressure plate is stably pressed against the composite plate and cannot move upward. When it is necessary to release the pressure on the composite plate, the lever is pulled to both sides to disengage the rack from the locking teeth. The first compression spring elastically extends and pushes the pressure plate upward, and the pressure plate disengages from the composite plate. This limiting mechanism is easy to operate and can stably fix the composite plate.

[0012] Optionally, a pressing plate is horizontally fixed to the top surface of the pressure plate, and a baffle is vertically fixed to the bottom surface of the pressure plate. The baffle is attached to the outer wall of the arm plate, and a straight rib is fixed between the pressure plate and the baffle.

[0013] Optionally, fixed beams are fixed to both ends and the middle part of the top surface of the substrate, and lifting rings are installed on the fixed beams. The length direction of the fixed beams is perpendicular to the length direction of the substrate. Two hangers are provided and symmetrically arranged on the left and right sides of the substrate, and each is driven by a set of drive mechanisms.

[0014] Optionally, the drive mechanism includes a geared motor mounted on a fixed beam located in the middle of the substrate. The output shaft of the geared motor is connected to a lead screw via a connecting shaft. The end of the lead screw away from the geared motor is rotatably connected to a fixed beam located at the end of the substrate. The lead screw is threadedly connected to a moving beam.

[0015] Optionally, pulley blocks are installed on the bottom surfaces of both ends of the movable beam, and the pulleys in the pulley blocks provide rolling support on the top surface of the base plate.

[0016] Optionally, the substrate includes a panel and a mesh rib fixed to the underside of the panel, and a groove is formed on the panel. Attached Figure Description

[0017] Figure 1 is a top view of the composite plate hoisting device according to an embodiment of the present invention.

[0018] Figure 2 is a cross-sectional view along direction AA in Figure 1.

[0019] Figure 3 is a structural schematic diagram of the arm plate and limiting mechanism of this utility model embodiment.

[0020] Figure 4 is a vertical sectional view of the arm plate in Figure 3.

[0021] Explanation of reference numerals in the attached drawings: 1. Base plate; 10. Panel; 100. Slide 1; 11. Mesh rib; 2. Fixed beam; 20. Lifting ring; 3. Hanger; 30. Moving beam; 31. L-shaped connecting plate; 32. U-shaped support plate; 320. Arm plate; 3200. Slide 2; 3201. Slide 3; 321. Base plate; 33. Buffer pad; 34. Pulley block; 4. Drive mechanism; 40. Gear motor; 41. Lead screw; 5. Limiting mechanism; 50. Pressure plate; 500. Clamping tooth; 51. Compression spring 1; 52. Rack; 53. Compression spring 2; 54. Lever; 55. Press plate; 56. Baffle; 57. Straight rib. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to Figures 1-4.

[0023] This utility model discloses a composite slab hoisting device. Referring to Figures 1 and 2, the composite slab hoisting device includes a base plate 1, the base plate 1 includes a panel 10, a mesh rib plate 11 is fixedly connected to the bottom surface of the panel 10, and a fixing beam 2 is fixedly connected to both ends and the middle part of the top surface of the panel 10. The length direction of the fixing beam 2 is perpendicular to the length direction of the panel 10. Lifting rings 20 are fixed to both ends of the top surface of the fixing beam 2. A sliding groove 100 is formed on the panel 10 along the length direction, and two sliding grooves 100 are provided between two adjacent fixing beams 2.

[0024] Referring to Figures 1 and 2, two hangers 3 are slidably installed on the panel 10 via a slide groove 100. The two hangers 3 are symmetrically arranged on the left and right sides of the panel 10. Each hanger 3 includes a movable beam 30 located above the panel 10. The movable beam 30 is parallel to the fixed beam 2. L-shaped connecting plates 31 are fixedly connected to both ends of the bottom surface of the movable beam 30. The L-shaped connecting plates 31 are slidably inserted through the slide groove 100. The bottom end of the L-shaped connecting plates 31 extends outward. A U-shaped support plate 32 is fixedly connected between the bottom ends of the two L-shaped connecting plates 31. The U-shaped support plate 32 includes an arm plate 320 fixedly connected to the L-shaped connecting plates 31 and a bottom plate 321 fixedly connected between the two arm plates 320. The arm plate 320 is arranged vertically, and the bottom plate 321 is arranged horizontally.

[0025] Referring to Figures 1 and 2, a rubber buffer pad 33 is fixed to the top surface of the base plate 321. Pulley groups 34 are installed at both ends of the bottom surface of the moving beam 30, with the pulleys in the pulley groups 34 providing rolling support to the top surface of the panel 10. A drive mechanism 4 is provided above the panel 10 to drive the hanger 3 to reciprocate along the slide groove 100. The drive mechanism 4 includes a reduction motor 40 mounted on a fixed beam 2 located in the middle of the panel 10. The output shaft of the reduction motor 40 is connected to a lead screw 41 via a coupling. The lead screw 41 is perpendicular to the fixed beam 2. The end of the lead screw 41 away from the reduction motor 40 is rotatably connected to the fixed beam 2 located at the end of the panel 10. The lead screw 41 is threadedly connected to the moving beam 30.

[0026] Referring to Figures 1-4, the arm plate 320 is also provided with a limiting mechanism 5 for fixing the composite plate with the base plate 321. The arm plate 320 has a vertically opened slide groove 3200. The limiting mechanism 5 includes a pressure plate 50 that is horizontally inserted through the slide groove 3200 and can move vertically along the slide groove 3200. The pressure plate 50 applies pressure to the top surface of the composite plate. A compression spring 51 is vertically arranged in the slide groove 3200. One end of the compression spring 51 is fixedly connected to the pressure plate 50, and the other end is fixedly connected to the bottom wall of the slide groove 3200. Accommodating cavities are respectively provided on the left and right sides of the slide groove 3200. A rack 52 is horizontally slidably installed in the accommodating cavity. Multiple compression springs 53 are connected between the rack 52 and the inner wall of the accommodating cavity.

[0027] Referring to Figures 3 and 4, a sliding groove 3201 is horizontally formed on the side wall of the arm plate 320, which communicates with the receiving cavity. A lever 54 is vertically fixed to the surface of the rack 52, and the lever 54 slides through the sliding groove 3201. Right-angled triangular teeth 500 are fixed to the left and right sides of the pressure plate 50, with the hypotenuse of the teeth 500 facing downwards. The teeth on the rack 52 mesh with the teeth 500. A pressing plate 55 is also horizontally fixed to the top surface of the pressure plate 50, and a baffle 56 is vertically fixed to the bottom surface of the pressure plate 50. The baffle 56 is set against the outer wall of the arm plate 320, and a straight rib plate 57 for support is fixed between the baffle 56 and the pressure plate 50.

[0028] The implementation principle of the composite slab hoisting device in this embodiment of the utility model is as follows: the workers use lifting machinery and lifting rings 20 to lift the device to the top of the composite slab, and then lower the device until the top surface of the bottom plate 321 is lower than the bottom surface of the composite slab. Then, the reduction motor 40 drives the lead screw 41 to rotate, which drives the hanger 3 to move and be fitted onto the composite slab. By controlling the reduction motor 40, the position of the hanger 3 on the composite slab can be controlled, so that the two hangers 3 are evenly distributed relative to the composite slab, so that the composite slab is evenly supported during subsequent hoisting.

[0029] Before hoisting, pressing down on the pressing plate 55 will move the pressure plate 50 downward and apply pressure to the top surface of the composite plate. During the downward movement of the pressure plate 50, the locking teeth 500 squeeze the rack 52 to move to both sides, and the compression spring 53 drives the rack 52 to approach the locking teeth 500. After the pressure plate 50 stops, the locking teeth 500 and the rack 52 will mesh again. At this time, the compression spring 51 is in a compressed state, and the pressure plate 50 applies stable pressure to the composite plate and cannot move upward.

[0030] When it is necessary to release the pressure on the composite plate, pull the levers 54 to both sides to disengage the rack 52 from the locking teeth 500. The compression spring 51 extends elastically and pushes the pressure plate 50 upward, disengaging it from the composite plate. Finally, control the geared motor 40 to reverse, causing the hanger 3 to detach from the composite plate. This device can evenly support and suspend the composite plate without using lifting points on the plate, thus reducing damage to the plate. The composite plate is evenly stressed, reducing the risk of deformation due to its own weight.

[0031] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A composite slab hoisting device, characterized in that: The system includes a substrate (1), a lifting ring (20) is installed on the top of the substrate (1), at least two hangers (3) are slidably arranged on the substrate (1) along the length direction, and a slide groove (100) is also opened on the substrate (1) along the length direction. The hanger (3) includes a movable beam (30) located above the substrate (1), and L-shaped connecting plates (31) that slide through the slide groove (100) are fixed at both ends of the movable beam (30). A U-shaped support plate (32) is fixed between the bottoms of the L-shaped connecting plates (31). The U-shaped support plate (32) includes two vertically arranged arm plates (320) and a horizontally arranged bottom plate (321). A drive mechanism (4) for driving the movable beam (30) to move back and forth along the slide groove (100) is also installed on the top surface of the substrate (1).

2. The composite slab hoisting device according to claim 1, characterized in that: A limiting mechanism (5) for fixing the composite plate to cooperate with the base plate (321) is installed on the arm plate (320). The limiting mechanism (5) includes a pressure plate (50) that is vertically slidably installed on the arm plate (320).

3. The composite slab hoisting device according to claim 2, characterized in that: The upper edge of the arm plate (320) is vertically provided with a second sliding groove (3200). The pressure plate (50) is horizontally inserted through the second sliding groove (3200). A compression spring (51) is connected between the pressure plate (50) and the bottom wall of the second sliding groove (3200). The left and right sides of the pressure plate (50) are respectively fixed with a locking tooth (500). The left and right sides of the second sliding groove (3200) are respectively provided with a receiving cavity. A rack (52) that cooperates with the locking tooth (500) is horizontally slidably installed in the receiving cavity. A compression spring (53) is provided between the rack (52) and the inner wall of the receiving cavity. The outer wall of the arm plate (320) is horizontally provided with a third sliding groove (3201) that communicates with the receiving cavity. A lever (54) that slides through the third sliding groove (3201) is fixedly connected to the side wall of the rack (52).

4. The composite slab hoisting device according to claim 3, characterized in that: A pressing plate (55) is horizontally fixed to the top surface of the pressing plate (50), and a baffle (56) is vertically fixed to the bottom surface of the pressing plate (50). The baffle (56) is attached to the outer wall of the arm plate (320), and a straight rib plate (57) is fixed between the pressing plate (50) and the baffle (56).

5. The composite slab hoisting device according to any one of claims 1-4, characterized in that: Fixed beams (2) are fixed to both ends and the middle part of the top surface of the substrate (1). The lifting ring (20) is installed on the fixed beam (2). The length direction of the fixed beam (2) is perpendicular to the length direction of the substrate (1). There are two hangers (3) symmetrically arranged on the left and right sides of the substrate (1) and driven by a set of driving mechanisms (4).

6. The composite slab hoisting device according to claim 5, characterized in that: The drive mechanism (4) includes a geared motor (40) mounted on a fixed beam (2) located in the middle of the substrate (1). The output shaft of the geared motor (40) is connected to a lead screw (41) via a connecting shaft. The end of the lead screw (41) away from the geared motor (40) is rotatably connected to the fixed beam (2) located at the end of the substrate (1). The lead screw (41) is threadedly connected to the moving beam (30).

7. The composite slab hoisting device according to any one of claims 1-4, characterized in that: The bottom surfaces at both ends of the movable beam (30) are respectively equipped with pulley blocks (34), and the pulleys in the pulley blocks (34) are rolled and supported on the top surface of the base plate (1).

8. The composite slab hoisting device according to any one of claims 1-4, characterized in that: The substrate (1) includes a panel (10) and a mesh rib (11) fixed below the panel (10), and a groove (100) is formed on the panel (10).

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