Prefabricated component lifting device

Abstract

The present invention relates to a prefabricated component hoisting device comprising a pair of parallel, opposing L-shaped steel bars forming a small component-bearing portion; a plurality of parallel, vertically disposed U-shaped steel bars with downwardly facing notches at the lower portions of the L-shaped steel bars; a plurality of lifting point fixing devices: stud eyebolts that pass vertically through the notches of the L-shaped steel bars and the U-shaped steel bars and securely connect the L-shaped steel bars to the U-shaped steel bars; and steel wire ropes: one connected to a lifting ring at the upper portion of the stud eyebolts and the other to a lifting ring at the lower portion of the stud eyebolts. The present invention can simultaneously hoist at least one group of small components and a prefabricated floor slab, significantly improving hoisting efficiency and reducing construction project costs.

Description

Technical Field

[0001] The invention relates to a prefabricated component hoisting device, belonging to the technical field of construction engineering using prefabricated components. Background Art

[0002] Prefabricated components include prefabricated wall panels, prefabricated floor slabs and other small prefabricated components. The prefabricated component lifting devices for high-rise residential buildings generally consist of tower cranes, steel beams, lifting ropes, hooks, etc.

[0003] Prefabricated wall panels are generally hoisted vertically at two lifting points. The lifting points are the embedded lifting bolts or truss steel bars on the prefabricated wall panels. First, use a lifting rope and a hook to connect the steel beam, and then use a hanging sling to connect the hook on the beam and the lifting point on the prefabricated wall panel. After lifting to the corresponding floor, install and fix the prefabricated wall panel, and release the hook.

[0004] Prefabricated floor slabs and other small prefabricated components are generally hoisted horizontally at four lifting points. The lifting points of prefabricated floor slabs are the floor slab truss steel bars, and the lifting points of other small prefabricated components are the embedded lifting bolts. Fix the hooks and lifting points before lifting. After lifting to the corresponding position, place the prefabricated floor slabs or small prefabricated components steadily on the floor and release the hooks.

[0005] Whether it is prefabricated wall panels, prefabricated floor slabs or other small prefabricated components, the existing lifting equipment can only achieve single-time lifting of each piece, and the large number of lifting times increases the probability of damage during the lifting process, resulting in low overall lifting efficiency and high lifting costs. Summary of the Invention

[0006] The purpose of the present invention is to provide a prefabricated component hoisting device to solve the problem that the existing hoisting device can only hoist prefabricated components one by one, has low hoisting efficiency and high cost.

[0007] The present invention adopts the following technical solutions:

[0008] A prefabricated component lifting device comprises: a pair of L-shaped steels 3 that are parallel and facing each other and form a bearing portion for a small component; a plurality of U-shaped steels 2 that are fixed parallel and vertically to the lower portion of the L-shaped steels 3 with the notches facing downward; a plurality of lifting point devices: stud eyebolts 1 that are vertically fixed and pass through the notches of the L-shaped steels 3 and the U-shaped steels 2; and steel wire ropes 4: one of which is connected to the lifting ring on the upper portion of the stud eyebolt 1, and the other is connected to the lifting ring on the lower portion of the stud eyebolt 1.

[0009] Preferably, the stud eye bolt 1 comprises a rectangular steel, the top and bottom of which are each provided with a screw hole, the screw hole being threadedly engaged with a threaded rod, the end of the screw rod being fixedly connected to a top plate, and the other outer end of the top plate being fixedly connected to a said eye.

[0010] Preferably, the lower end of the steel wire rope 4 connected to the lower lifting ring is connected to a hook for connecting to the lifting part of the prefabricated floor slab.

[0011] Furthermore, there are four lifting point devices, which are respectively located at the four corners of the prefabricated component lifting device.

[0012] Furthermore, the upper ends of the steel wire ropes 4 connected to the upper lifting rings converge upward to a point.

[0013] Furthermore, the lengths of the four steel wire ropes 4 connected to the lower lifting ring are equal; the lengths of the four steel wire ropes 4 connected to the upper lifting ring are also equal.

[0014] Preferably, the L-shaped steel 3 as the long side and the U-shaped steel 2 as the web are respectively opened according to the modules of the set lengths, and the stud eye bolts 1 are replaced with different connection positions to adapt to small components of different sizes.

[0015] Furthermore, the adjustable hanging frame composed of the L-shaped steel 3 and the U-shaped steel 2 is expanded to two layers or more.

[0016] The beneficial effects of the present invention are:

[0017] 1) At least one group of small components and one prefabricated floor slab can be hoisted at the same time, which greatly improves the hoisting efficiency and reduces the cost of construction projects.

[0018] 2) Modular spreaders can be adjusted without being restricted by component size and can lift different components;

[0019] 3) Multiple components can be lifted at a time, and large prefabricated components (prefabricated floor slabs) and small prefabricated components can be lifted at the same time, which greatly improves the lifting efficiency and reduces the lifting cost;

[0020] 4) Multifunctional and detachable, with strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the prefabricated component lifting device of the present invention.

[0022] Figure 2 It is a schematic diagram of a stud eye bolt.

[0023] Figure 3 This is a partial front view of the stud eye bolts fixed to the L-shaped steel and U-shaped steel.

[0024] Figure 4 It is a side view of the stud eyebolts fixed to the L-shaped steel and U-shaped steel.

[0025] Figure 5 It is a partial top view of the prefabricated component lifting device of the present invention.

[0026] Figure 6 It is a stereoscopic view of the prefabricated component lifting device of the present invention from another perspective.

[0027] In the figure, 1. Stud eyebolt, 2. U-shaped steel, 3. L-shaped steel, 4. Steel wire rope, Rectangular steel, Lifting ring, Baffle. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] See also Figures 1-6 A prefabricated component lifting device includes: a pair of L-shaped steels 3 that are parallel and facing each other to form a small component bearing part, a plurality of U-shaped steels 2 that are fixed parallel and vertically at the lower part of the L-shaped steels 3 with the notches facing downwards; a plurality of lifting point devices: a double-headed lifting eye bolt 1 that is vertically fixed and passes through the notches of the L-shaped steels 3 and the U-shaped steels 2; a steel wire rope 4: one of which is connected to the lifting eye at the upper part of the double-headed lifting eye bolt 1, and the other is connected to the lifting eye at the lower part of the double-headed lifting eye bolt 1.

[0030] The prefabricated component lifting device of this scheme consists of an adjustable lifting bracket, a steel wire rope 4, a double-headed eye bolt 1, etc.:

[0031] The adjustable lifting bracket is composed of two L-shaped steels 3 and two U-shaped steels 2. The two L-shaped steels and the two U-shaped steels are arranged in parallel to form a rectangular adjustable lifting bracket. The short side of the L-shaped steel 3 faces upward and the long side is placed horizontally. The grooves of the two L-shaped steels 3 face inward and are closed at both ends; the two U-shaped steels 2 are arranged in parallel below the L-shaped steel with the concave sides facing downward, and the U-shaped steel webs are perpendicular to the long sides of the L-shaped steels.

[0032] In order to achieve the adjustability of the above-mentioned rectangular lifting bracket, the long side of the L-shaped steel and the web of the U-shaped steel are respectively opened according to the module of 10 cm and connected with double-headed lifting eye bolts 1. In order for the adjustable lifting bracket to be lifted smoothly, the double-headed lifting eye bolts 1 cannot exceed the cross-sectional size of the U-shaped steel wing plate.

[0033] See also Figure 2 The stud eye bolt 1 comprises a rectangular steel, the top and bottom of which are each provided with a screw hole, the screw hole being threadedly engaged with a threaded rod, the end of the screw rod being fixedly connected to a top plate, and the other outer end of the top plate being fixedly connected to a lifting ring.

[0034] See also Figure 1-2 The lower end of the steel wire rope 4 connected to the lower lifting ring is connected to a hook for connecting the prefabricated floor slab lifting position.

[0035] See also Figure 1 The described lifting point devices are provided with four, which are respectively located at the four corners of the prefabricated component lifting device.

[0036] See also Figure 1-2 The upper ends of the steel wire ropes 4 connected to the upper lifting rings converge upward to one point.

[0037] See also Figure 1 , the lengths of the four steel wire ropes 4 connected to the lower lifting rings are equal; the lengths of the four steel wire ropes 4 connected to the upper lifting rings are also equal.

[0038] When the above adjustable lifting brackets are used in combination, small prefabricated components can be placed on the lifting brackets, and prefabricated floor slabs can be lifted under the brackets through the lifting rings on the U-shaped steel. Figure 1 The size of the lifting bracket can be flexibly adjusted according to the size of the prefabricated components to be hoisted; multiple quantities, types, and sizes of prefabricated components can be lifted at one time. When disassembled for use, the U-shaped steel can be used alone as a lifting beam, and the lifting rings can be fixed to the punched holes of the U-shaped steel as needed to lift the prefabricated wall panels.

[0039] The multifunctional prefabricated component lifting bracket composed of L-shaped steel and U-shaped steel can lift small prefabricated components (such as air-conditioning panels, balcony panels, etc.) and prefabricated floor slabs at the same time when used as a whole; it can lift prefabricated wall panels when disassembled and used separately; the lifting bracket has holes according to the 10cm module (not limited to 10cm module, can be adjusted according to actual needs), and the size of the bracket can be flexibly adjusted according to the size of the prefabricated components to be lifted, so as to realize the lifting of multiple quantities, types and sizes of prefabricated components at one time; multiple components can be lifted at one time, including two layers, the upper layer is an adjustable lifting frame for placing small prefabricated components, and the lower layer is for lifting prefabricated floor slabs.

[0040] It should be noted that the "upper layer" for placing small prefabricated components can be set as one layer, such as Figure 1 and Figure 6 However, it can also be expanded to two or even three floors, while the "lower floor" of the lowest hoisted prefabricated floor slab can only be independently set up as one floor. The attached figure does not show this expansion form.

[0041] When doing specific work, follow the steps below:

[0042] S1. Before carrying out hoisting operations on site, first place two square timbers on the ground in the hoisting area;

[0043] S2. According to the project requirements, adjust the size of the bracket through the reserved holes on the steel bracket, combine the above-mentioned lifting brackets as a whole, place them on the square timber, and finally place the small prefabricated components horizontally on the brackets;

[0044] S3. Lift the lifting bracket and the small prefabricated component on the bracket to a certain height and hold for 1 minute. Then use the lifting rope to connect the four lifting points on the U-shaped steel and the corresponding four lifting points on the prefabricated floor slab. Lift to a certain height and hold for 1 minute before steadily ascending.

[0045] S4. After hoisting to the corresponding floor, first place the floor slab steadily in the position specified in the drawing, remove the lower lifting rope, then place the bracket steadily on the ground, place two square timbers underneath, then remove the upper lifting rope and hoist each small component;

[0046] S5. Repeat the above steps until the lifting is completed.

[0047] When hoisting prefabricated wall panels, disassemble the above-mentioned hoisting brackets and use only punched U-shaped steel as the hoisting steel beam. Adjust the position of the lifting ring on the U-shaped steel according to the size of the hoisted prefabricated wall panels, connect the U-shaped steel lifting beam with a lifting rope and a hook, and then connect the hook on the lifting beam and the lifting point on the prefabricated wall panel through a hanging sling. After hoisting to the corresponding floor, install and fix the prefabricated wall panel, and remove the hook and lifting rope.

[0048] The above are preferred embodiments of the present invention. Those skilled in the art may make various changes or improvements based on the above. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A prefabricated component lifting device, characterized in that: include: A pair of parallel and opposite L-shaped steels (3) forming the bearing portion of the small component, A plurality of U-shaped steels (2) arranged parallel and vertically at the bottom of the L-shaped steel (3) with the notches facing downwards; A plurality of lifting point fixing devices: a double-headed lifting eye bolt (1) vertically passing through the notches of the L-shaped steel (3) and the U-shaped steel (2) and fixedly connecting the L-shaped steel (3) and the U-shaped steel (2); Steel wire rope (4): The upper lifting ring and the lower lifting ring of the stud eye bolt (1) are both connected to the steel wire rope (4); The stud eyebolt (1) comprises a rectangular steel, wherein the top and bottom of the rectangular steel are each provided with a screw hole, the screw hole is threadedly engaged with a threaded rod, the end of the threaded rod is fixedly connected to one end of a top plate, and the other end of the top plate is fixedly connected to a lifting eye; A lifting bracket consisting of an L-shaped steel (3) and a U-shaped steel (2) is used to place small prefabricated components, and the lifting bracket is connected to the prefabricated floor slab via a steel wire rope; The "upper layer" for placing small prefabricated components is set to multiple layers, and the prefabricated floor slab is set to an independent layer; After lifting to the corresponding floor, first place the prefabricated floor slab steadily in the position specified in the drawing, remove the wire rope at the bottom, then place the lifting bracket steadily on the ground, place two square timbers underneath, then release the wire rope at the top and lift each small prefabricated component.

2. The prefabricated component hoisting device according to claim 1, characterized in that: The lower end of the steel wire rope (4) connected to the lower lifting ring is connected to a hook for connecting to the prefabricated floor slab lifting part.

3. The prefabricated component hoisting device according to claim 2, characterized in that: There are four lifting point fixing devices, which are respectively located at the four corners of the prefabricated component lifting device.

4. The prefabricated component hoisting device according to claim 1, characterized in that: The upper ends of the steel wire ropes (4) connected to the upper lifting rings converge upward to a point.

5. The prefabricated component hoisting device according to claim 1, characterized in that: The lengths of the four steel wire ropes (4) connected to the lower lifting ring are equal; the lengths of the four steel wire ropes (4) connected to the upper lifting ring are also equal.

6. The prefabricated component hoisting device according to claim 1, characterized in that: The L-shaped steel (3) as the long side and the U-shaped steel (2) as the web are respectively opened according to the modules of the set lengths, and the double-headed eyebolts (1) are replaced with different connection positions to adapt to small components of different sizes.

7. The prefabricated component hoisting device according to claim 5, characterized in that: The adjustable hanging bracket composed of the L-shaped steel (3) and the U-shaped steel (2) is expanded to more than two layers.

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