Hoisting tool for prefabricated laminated slab

Abstract

The utility model discloses a hoisting tool for a prefabricated laminated slab. The hoisting tool comprises a hoisting frame and a lifting device for pulling the hoisting frame to move, the hanging bracket comprises at least three sections of hanging arms which are arranged in a radial mode, each hanging arm is connected with a pre-embedded hanging ring of the prefabricated laminated slab, and a handle rod for an operator to hold is arranged on each hanging arm. And the handle rod is arranged on the suspension arm, so that a holding point is provided for an operator. When the hoisting tool disclosed by the technical scheme is used for hoisting the prefabricated laminated slab, an operator does not need to hold a steel wire rope and also does not need to hold a truss steel bar on the prefabricated laminated slab or the edge of the prefabricated laminated slab, and the positions of the hanging bracket and the prefabricated laminated slab hung on the hanging bracket are changed by pushing and pulling the handle rod, so that regulation and control are realized. Due to the fact that the handle rod is connected with the hanging bracket and located at the position higher than the prefabricated laminated slab, the handle rod cannot be attached to the adjacent prefabricated laminated slab, and the situation that an operator is injured by clamping can be effectively avoided.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of lifters, in particular to a lifting tool for prefabricated composite panels. Background Art

[0002] Composite floor slabs are assembled integral floor slabs made of prefabricated composite slabs and cast-in-place reinforced concrete layers. They have good integrity, smooth upper and lower surfaces, and are easy to decorate with the finishing layer. They are suitable for high-rise buildings and large-span buildings that require high overall rigidity.

[0003] The construction of composite floor slabs involves moving the prefabricated composite slabs into a reserved space. In the prior art, a tower crane or hoist is typically used as a lifting device, connected to the prefabricated composite slabs via several steel cables. Hooks for connecting the steel cables are embedded in the prefabricated composite slabs. However, due to the load, the hooks are often positioned closer to the center of the prefabricated composite slabs, making it difficult for operators to stand outside the prefabricated composite slabs and hold the steel cables. Therefore, it is impossible to control the movement of the suspended prefabricated composite slabs by pulling the steel cables. Therefore, operators are generally forced to control the movement of the suspended prefabricated composite slabs by gripping the truss steel bars or the edges of the prefabricated composite slabs. However, when the prefabricated composite slabs are in place, the truss steel bars are close to or even aligned with the truss steel bars of adjacent prefabricated composite slabs, and the edges of the prefabricated composite slabs are also very close to the edges of adjacent prefabricated composite slabs, posing a risk of operators being pinched by adjacent prefabricated composite slabs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a hoisting tool for prefabricated composite panels that is convenient for operators to control the movement of prefabricated composite panels in a suspended state and has a higher safety factor.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A lifting tool for prefabricated composite panels includes a hanger and a lifting device for pulling the hanger to move; the hanger includes at least three radially arranged arms, each of which is connected to a pre-buried hanging ring of the prefabricated composite panel, and the arms are provided with handles for operators to hold.

[0007] According to this solution, a handle is provided on the boom, providing a gripping point for the operator. When using the lifting tool disclosed in this technical solution to hoist prefabricated composite panels, the operator does not need to hold the wire rope, nor does he need to hold the truss steel bars on the prefabricated composite panels or the edges of the prefabricated composite panels. Instead, he can adjust the position of the hanger and the prefabricated composite panels hung on it by pushing and pulling the handle. Because the handle is connected to the hanger and is located above the prefabricated composite panels, it will not come into contact with adjacent prefabricated composite panels, effectively preventing the operator from being pinched.

[0008] As a further improvement of the above technical solution:

[0009] The boom is a U-shaped slide structure with the notch facing downwards. A slider is installed in the boom, and a hook is connected to the slider.

[0010] According to this plan, since the positions of the embedded hanging rings on different prefabricated composite panels may be different, in order to facilitate connection, the boom is made into a U-shaped slide structure with the notch facing downward, and a slider connected to the hook is installed in it, so that the position of the hook on each boom can be changed by sliding, thereby expanding the scope of application.

[0011] The boom is provided with a plurality of screw holes along its length direction, and the screw holes are threaded with fastening bolts for squeezing the sliding block.

[0012] According to this solution, to maintain stability during the hoisting process, the slider must be fixed relative to the boom. By providing screw holes in the boom and threading fastening bolts into the screw holes, the slider can be slid to the optimal position and then tightened by tightening the fastening bolts to tighten the slider, thereby achieving positioning between the slider and the boom. This prevents uncontrolled movement of the slider within the boom during hoisting.

[0013] The spacing between the screw holes is smaller than the length of the slider.

[0014] According to this solution, by setting the spacing of the screw holes to be smaller than the length of the slider, no matter where the slider is in the boom, there is at least one screw hole aligned with it, which means that at least one fastening bolt can tighten the slider.

[0015] The boom comprises an inner arm section and an outer arm section, which are hinged; the inner sides of the inner arm sections are intersected and connected, and the outer arm sections can be flipped upward around the hinge point.

[0016] According to this solution, by setting the boom into a two-section hinged structure, when the boom is idle or transported, the outer arm sections can be folded together to reduce the occupied space.

[0017] The handle is configured as a telescopic rod.

[0018] According to this solution, by configuring the handle as a telescopic rod, the position of the end of the handle for the operator to hold can be changed according to actual conditions, thereby being able to adapt to more application scenarios.

[0019] The orthographic projection of the free end of the handle on the upper surface of the prefabricated composite panel can be no more than 0.5m away from the nearest edge of the prefabricated composite panel.

[0020] According to this solution, based on the length of the human arm span, when the distance between the free end of the handle and the direct projection of the handle on the upper surface of the prefabricated composite panel and the nearest edge of the prefabricated composite panel is no more than 0.5m, it is most convenient and natural for the operator to hold the handle, thereby making the lifting tool disclosed in this application easier to use.

[0021] The hanger also includes a rotating seat, one end of which is connected to the intersection of the boom and the other end of which is connected to the lifting device.

[0022] According to this solution, by providing a rotating seat, the wire rope in the lifting device can be prevented from twisting when the boom rotates horizontally around the rotating seat, thereby reducing resistance.

[0023] The lifting device comprises a frame, a lifting arm and a hoist are arranged on the frame, a steel wire rope is wound around the hoist, and one end of the steel wire rope away from the hoist is connected to the hanger after winding around the lifting arm.

[0024] According to this plan, by setting up a winch, the height of the hanger can be adjusted by oneself, which saves more effort.

[0025] The lifting arm is rotatably connected to the frame.

[0026] According to this solution, by rotatably connecting the crane arm to the frame, the hanger can carry the prefabricated composite panels and rotate horizontally around the frame driven by the crane arm, thereby expanding the scope of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a lifting diagram of the lifting tool;

[0028] Figure 2 This is the structural diagram of the hanger Figure 1 ;

[0029] Figure 3 This is the structural diagram of the hanger Figure 2 ;

[0030] Figure 4 yes Figure 3 A local enlarged schematic diagram of point A in the middle.

[0031] The numbers in the figure represent: 01, prefabricated composite plate; 011, embedded hanging ring; 1, hanger; 11, boom; 111, slider; 112, hook; 113, screw hole; 114, fastening bolt; 115, inner arm section; 116, outer arm section; 12, handle; 13, rotating seat; 2, lifting device; 21, frame; 22, boom; 23, winch; 24, wire rope; 25, turntable. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example

[0034] like Figures 1 to 4 As shown, the lifting tool for prefabricated composite panels of this embodiment includes a hanger 1 and a lifting device 2 for pulling and moving the hanger 1; the hanger 1 includes four arms 11, the inner ends of each arm 11 are connected to form a whole and arranged in a cross shape (in this embodiment, each arm 11 is horizontal, while in other embodiments, each arm 11 can also be set to an inclined shape with the inner end higher than the outer end, and the projection of each arm 11 on the horizontal plane is radial, which can further increase the stability of the hanger 1). The arm 11 is a U-shaped slide structure with the notch facing downward. A slider 111 is installed in each arm 11, and a hook 112 for connecting to the pre-embedded hanging ring 011 on the prefabricated composite panel 01 is hung on the slider 111. By sliding the slider 111 in the arm 11, different models of prefabricated composite panels 01 can be adapted. Each boom 11 also has 12 screw holes 113 along its length. The spacing between adjacent screw holes 113 is less than the length of the slider 111. Fastening bolts 114 are threaded into the screw holes 113. By tightening the fastening bolts 114, the ends of the bolts 114 can be tightened against the slider 111, thereby securing the boom 11. Furthermore, the boom 11 includes an inner arm section 115 and an outer arm section 116, which are hinged together. The inner sides of the inner arm sections 115 intersect and connect, and the outer arm sections 116 can be tilted upward around the hinge point.

[0035] In this embodiment, the distal end of each boom 11 is provided with a handle 12 extending distally for the operator to hold. The handle 12 is a telescopic rod, and the distance between the distal free end thereof and the nearest edge of the prefabricated composite panel 01 in the positive projection on the upper surface of the prefabricated composite panel 01 is no more than 0.5 m.

[0036] In this embodiment, a rotating seat 13 is also provided above the intersection of each boom 11. The rotating seat 13 is a bearing structure, the lower end of which is fixedly connected to the boom 11, and the upper end of which is formed with a connecting ring, which is used to connect to the wire rope 24 in the lifting device 2.

[0037] In this embodiment, the lifting device 2 includes a frame 21, on which are mounted a boom 22 and a hoist 23. A wire rope 24 is wound around the hoist 23. The end of the wire rope 24, away from the hoist 23, passes around the boom 22 and is connected to a connecting ring formed on the rotating base 13. Furthermore, a turntable 25 is mounted on the frame 21, and the boom 22 is connected to the turntable 25, thereby enabling horizontal rotation.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the present invention, or modify it into equivalent embodiments with equivalent variations. Therefore, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the content of the present invention and are based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A lifting tool for prefabricated composite panels, characterized by: The invention comprises a hanger (1) and a lifting device (2) for pulling the hanger to move; the hanger (1) comprises at least three radially arranged arms (11), each of the arms (11) is connected to a pre-buried hanging ring (011) of a prefabricated composite plate (01), and a handle (12) for an operator to hold is provided on the arm (11).

2. The hoisting tool for prefabricated composite panels according to claim 1, characterized in that: The suspension arm (11) is a U-shaped chute structure with the notch facing downwards. A slider (111) is installed in the suspension arm (111), and a hook (112) is connected to the slider (111).

3. The hoisting tool for prefabricated composite panels according to claim 2, characterized in that: The boom (11) is provided with a plurality of screw holes (113) along its length direction, and the screw holes (113) are internally threaded with fastening bolts (114) for tightening the slider (111).

4. The hoisting tool for prefabricated composite panels according to claim 3, characterized in that: The spacing between the screw holes (113) is smaller than the length of the slider (111).

5. The prefabricated composite panel lifting tool according to any one of claims 1 to 4, characterized in that: The boom (11) comprises an inner arm section (115) and an outer arm section (116), which are hinged; the inner sides of the inner arm sections (115) are intersected and connected, and the outer arm sections (116) can be turned upward around the hinge point.

6. The hoisting tool for prefabricated composite panels according to claim 1, characterized in that: The handle (12) is a telescopic rod.

7. The hoisting tool for prefabricated composite panels according to claim 6, characterized in that: The distance between the orthographic projection of the free end of the handle (12) on the upper surface of the prefabricated composite board (01) and the nearest edge of the prefabricated composite board (01) does not exceed 0.5 m.

8. The hoisting tool for prefabricated composite panels according to claim 1, characterized in that: The hanger (1) further comprises a rotating seat (13), one end of which is connected to the intersection of the boom (11), and the other end of which is connected to the lifting device (2).

9. The hoisting tool for prefabricated composite panels according to claim 1, characterized in that: The lifting device (2) includes a frame (21), a lifting arm (22) and a hoist (23) are provided on the frame (21), a steel wire rope (24) is wound around the hoist (23), and an end of the steel wire rope (24) away from the hoist (23) is connected to the hanger (1) after passing around the lifting arm (22).

10. The hoisting tool for prefabricated composite panels according to claim 9, characterized in that: The lifting arm (22) is rotatably connected to the frame (21).

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