Auxiliary device for lifting and turning prefabricated columns with different cross-sections

Abstract

An auxiliary device for hoisting and turning over prefabricated columns with different cross-sections includes a support column and a pulley support column, wherein there are two support columns and two pulley support columns, and the two support columns are arranged opposite to the two pulley support columns. The support columns and the pulley support columns are respectively provided with a series of limiting holes at the same height in the direction parallel to the turning direction of the column body. The support columns and the pulley support columns are connected by a plate chain with adjustable length and angle, and a bracket is installed on the limiting hole. The present invention utilizes a plate chain with adjustable length and angle to hoist and turn over rectangular prefabricated columns with different side lengths, and the plate chain can be bent and adjusted to hoist and turn over circular prefabricated columns with different diameters, and has a wide range of applications; the bracket limit protects anchor steel bars of different lengths during the hoisting process; and by setting a pressure wheel as a force point, it can adapt to various hoisting methods such as the sliding method and the rotation method.

Description

Technical Field

[0001] The invention relates to an auxiliary device for prefabricated building construction, in particular to an auxiliary device for hoisting and turning prefabricated columns used in construction projects. Background Art

[0002] With the development of building industrialization, many high-quality buildings are built with prefabricated and assembled structures. The sizes of prefabricated and assembled building components conform to the building modularization. The building module refers to the selected standard size unit as the value-added unit for size coordination, which serves as the basis for the mutual coordination of the sizes of buildings, components, etc. The component sizes and the reserved anchor steel bar lengths conform to the multiples or multiples of the building module.

[0003] Reinforced concrete rectangular and circular prefabricated columns are the main vertical load-bearing components in buildings and are the key to the overall safety of the building. Anchor steel bars are reserved at the bottom of the prefabricated columns and connected to the steel bars of the lower beams and columns before pouring concrete to form them. The existing turning devices are customized on-site for prefabricated columns of a certain cross-sectional style and size. Prefabricated columns of different cross-sectional styles and sizes need to be made separately, which has poor versatility, high operating costs, and is large and difficult to carry.

[0004] Precast piles are usually laid flat when delivered to the site from the factory. Anchor steel bars are usually reserved at the bottom of the precast columns. Anchor steel bars are crucial to structural safety. The single-point rotation lifting method and the sliding lifting method use the bottom of the column as the force point. The turning device in the existing technology uses a welded limit device to protect the length of the anchor steel bar. When the length of the anchor steel bar changes, the limit needs to be re-welded to fix it, which reduces the safety of the device and is time-consuming and labor-intensive. After too many welding times, the device can only be scrapped, and the amortization cost is high. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a lifting and turning auxiliary device suitable for prefabricated columns with different cross-sections. Combined with the modular characteristics of prefabricated building components, it can adapt to prefabricated columns of various cross-section styles and sizes. When the prefabricated piles are lifted and turned over, the reserved anchor steel bars of different lengths at the bottom of the column are protected to avoid damage to the anchor steel bars, thereby affecting the node strength, and helping to improve the lifting efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] An auxiliary device for lifting and turning prefabricated columns with different cross-sections includes a supporting column and a pulley supporting column. There are two supporting columns and two pulley supporting columns, and the two supporting columns are arranged opposite to the two pulley supporting columns. The supporting columns and the pulley supporting columns are respectively provided with a series of limiting holes at the same height in the turning direction parallel to the column body. The supporting columns and the pulley supporting columns are connected by a plate chain with adjustable length and angle, and a bracket is installed on the limiting holes.

[0008] Furthermore, the cross section of the support column is L-shaped, and U-shaped slots are provided at both ends of the L-shape from top to bottom.

[0009] Furthermore, the pulley support column consists of a support column body and a pressure wheel. The pressure wheel is fixedly mounted on the bottom of the support column body. The support column body has an L-shaped cross-section, with U-shaped slots running from top to bottom at both ends of the L-shape. The total length of the pulley support column is the same as that of the support column, ensuring that the entire prefabricated column can be temporarily and stably placed after being hoisted into a vertical position.

[0010] Furthermore, the plate chain is composed of standard chain plate links and grab chain plate links connected by pins. The grab chain plate links hook the U-shaped slots of the supporting columns and the U-shaped slots of the pulley supporting columns. The length of the standard chain plate links conforms to the building module of the prefabricated column size. Rectangular prefabricated columns with different side lengths are clamped and fixed by adjusting the number of standard chain plate links.

[0011] Furthermore, the grab hook chain plate link can rotate at an angle in the U-shaped slot of the support column and the U-shaped slot of the pulley support column. At the same time, the standard chain plate links can all rotate at an angle. By adjusting the rotation angle of the plate chain and the number of standard chain plate links, circular precast piles of different diameters can be clamped.

[0012] Furthermore, the plate chain can be moved up and down in the U-shaped slot to meet the needs of turning over prefabricated columns with different cross-sectional styles and sizes.

[0013] Furthermore, the limiting holes are configured as vertical strips, and the vertical spacing conforms to the difference in building modulus of each level of anchor steel bar length, and can adapt to different anchor steel bar lengths at the column base.

[0014] Furthermore, the bracket is welded by a support arm and a support plate, and a barb is provided on the support arm, and the barb passes through the limiting hole and is fixed downward, which is flexible to disassemble and assemble and ensures firm limiting. The height of the bracket can be adjusted by selecting limiting holes of different heights.

[0015] Taking into account the plane position of the reserved anchor steel bars of the prefabricated column, the support plate adopts an arc shape to maximize the contact area between the support plate and the bottom of the column, which is suitable for rectangular and circular prefabricated columns. The width of the support plate is equal to the width from the outer side of the prefabricated column anchor steel bar to the column edge. The support plate can support the bottom of the column to prevent slipping.

[0016] The present invention has the following beneficial effects:

[0017] The present invention fully considers the characteristics of component size and reserved anchor steel bar length in prefabricated and assembled building construction according to building modular design and production, clamps and limits the prefabricated columns in the whole process of lifting and turning over to prevent damage to the reserved anchor steel bars and ensure the strength of the beam-column nodes in subsequent construction; the device as a whole can be disassembled and assembled, and the transportation and storage volume is small; the support columns are connected by plate chains with adjustable length and angle, which are applicable to rectangular prefabricated columns with different side lengths or circular prefabricated columns with different diameters; by arranging pressure wheels, it can adapt to various lifting methods such as sliding method and rotation method, and has strong on-site adaptability; the limit of the bracket can prevent the prefabricated columns from sliding during the lifting process, protect the reserved anchor steel bars, and reduce the workload of steel bar repair and straightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the bracket structure of the illustrated embodiment;

[0020] Figure 3 for Figure 1 A schematic diagram of the plate chain structure of the embodiment shown;

[0021] Figure 4 for Figure 1 A schematic diagram of the hoisting process of the illustrated embodiment;

[0022] Figure 5 for Figure 1 The overall structural diagram of the embodiment shown is a schematic diagram of the hoisting of circular prefabricated columns;

[0023] Figure 6 for Figure 1 The overall structural diagram of the embodiment shown is a schematic diagram of the hoisting of rectangular prefabricated columns;

[0024] Figure 7 for Figure 1 Schematic diagram of the plate chain rotating structure at different angles in the embodiment shown;

[0025] In the figure: 1-support column, 2-pulley support column, 3-pressure wheel, 4-bracket, 5-limiting hole, 6-support plate, 7-support arm, 8-hook, 9-grab hook chain plate section, 10-standard chain plate section, 11-pin, 12-U-shaped slot, 13-plate chain, 14-anchor steel bar, 15-circular precast column, 16-rectangular precast column. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Reference Figure 1-Figure 7, an auxiliary device for lifting and turning over prefabricated columns of different cross-sections used in prefabricated and assembled building construction, including a supporting column 1 and a pulley supporting column 2, wherein there are two supporting columns 1 and two pulley supporting columns 2, and the two supporting columns 1 are arranged opposite to the two pulley supporting columns 2, and the supporting columns 1 and the pulley supporting columns 2 are respectively provided with a series of limiting holes 5 at the same height in the turning direction parallel to the column body, the supporting columns 1 and the pulley supporting columns 2 are connected by a plate chain 13 with adjustable length and angle, and a bracket 4 is installed on the limiting hole 5.

[0028] In this embodiment, the cross section of the support column 1 is L-shaped, and U-shaped slots 12 are provided at both ends of the L-shape from top to bottom. The L-shaped support column 1 has high bending rigidity, ensuring the safety of the lifting process.

[0029] In this embodiment, the pulley support column 2 consists of a support column body and a pressure wheel 3. The pressure wheel 3 is fixedly mounted at the bottom of the support column body. The cross-section of the support column body is L-shaped, and U-shaped slots 12 are provided at both ends of the L-shape from top to bottom. The total length of the pulley support column 2 is the same as that of the support column 1, ensuring that the entire prefabricated column can be stably placed temporarily after being hoisted into a vertical state.

[0030] Considering the stress on the device during turning and rotation, two pulley support columns 2 are placed on the ground side of the prefabricated column during turning, with the pressure wheel 3 close to the ground and first subjected to force during lifting. The pressure wheel 3 serves as the rotating hinge point for turning by the rotary lifting method or as the towing wheel for turning by the sliding lifting method.

[0031] In this embodiment, the plate chain 13 is composed of a pin 11 connecting each standard chain plate link 10 and a grab chain plate link 9. The grab chain plate link 9 hooks the U-shaped slot 12 of the support column 1 and the U-shaped slot 12 of the pulley support column 2. The length of the standard chain plate link 10 conforms to the building module of the prefabricated column. By adjusting the number of standard chain plate links 10, the rectangular prefabricated columns 16 with different side lengths are clamped and fixed, and the device can be released by knocking to loosen any one of the pins 11.

[0032] The grab hook of the grab hook chain plate link 9 can rotate at an angle in the U-shaped slot of the support column 1 and the U-shaped slot of the pulley support column 2. At the same time, the standard chain plate links 10 can all rotate at an angle. By adjusting the rotation angle of the plate chain 13 and adjusting the number of standard chain plate links 10, circular prefabricated piles 15 of different diameters can be clamped and fixed.

[0033] The rectangular prefabricated columns 16 with different side lengths and column heights or the circular prefabricated columns 15 with different diameters and column heights have different centers of gravity, resulting in different heights of the connection force points of the plate chain 13 during hoisting and turning over. Therefore, the plate chain 13 can move freely up and down in the U-shaped slot 12 to meet the turning over of prefabricated columns with different cross-sectional styles and sizes.

[0034] In order to prevent the prefabricated column from sliding down and damaging the reserved anchoring steel bars 14 when turning over, the limiting holes 5 are used to place brackets 4 to limit sliding.

[0035] In this embodiment, the limiting holes 5 are configured as vertical strips, and the vertical spacing conforms to the difference in each level of building module of the anchor steel bar length, and can adapt to different lengths of anchor steel bars 14 at the column bottom.

[0036] In this embodiment, the bracket 4 is welded by two support arms 7 and a support plate 6. The support arm 7 is provided with a hook 8. The hook 8 passes through the limiting hole 5 and is hung downward and fixed. The disassembly and assembly are flexible and the limiting is guaranteed to be firm. The height of the bracket can be adjusted by selecting limiting holes of different heights.

[0037] Taking into account the plane position of the reserved anchoring steel bars 14 of the prefabricated column, the support plate 6 adopts an arc shape to maximize the contact area between the support plate 6 and the bottom of the column, and is suitable for rectangular and circular prefabricated columns. The width of the support plate 6 is equal to the width from the outer side of the anchoring steel bars 14 of the rectangular prefabricated column 16 and the circular prefabricated column 15 to the column edge. The support plate 6 can support the bottom of the column to prevent slipping.

[0038] Working principle:

[0039] The precast piles are transported to the construction site and placed horizontally. For rectangular precast columns 16, the support columns 1 and the pulley support columns 2 are installed at the four corners. For circular precast columns 15, the support columns 1 and the pulley support columns 2 are installed at any cross-aligned position.

[0040] First, place the two pulley support columns 2 at the two corners of the bottom surface of the precast pile to be lifted and turned over, connect them through a plate chain 13 with a calculated length, and adjust the position of the bracket 4 to support the bottom of the column so that the end of the anchor steel bar 14 is a certain distance from the bottom surface of the pulley support column 2, and then connect the two support columns 1 through the plate chain 13 to clamp the precast column; finally, lift the top of the precast pile, and use the pressure wheel 3 as the force point, as a rotating hinge in the rotation method, and as a towing wheel in the sliding method; when the precast column is in a vertical state, the precast column can be quickly detached from the device by knocking and loosening any one of the pin shafts 11; during the entire lifting process, the anchor steel bar 14 does not touch the ground, reducing damage to the anchor steel bar 14.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. Applicable to the hoisting and turning auxiliary device of prefabricated columns with different cross-sections, characterized by: The yoke is provided with a plurality of U-shaped slots at the ends of the L-shaped plates, and the U-shaped slots are provided at the ends of the L-shaped plates, and the U-shaped slots are provided at the ends of the L-shaped plates. The U-shaped slot and the U-shaped slot of the pulley supporting column, the length of the standard chain plate section conforms to the building module of the prefabricated column size, and rectangular prefabricated columns with different side lengths can be clamped and fixed by adjusting the number of standard chain plate sections; the grab hook chain plate section can rotate an angle in the U-shaped slot of the supporting column and the U-shaped slot of the pulley supporting column, and the standard chain plate sections can all rotate an angle, and circular prefabricated piles of different diameters can be clamped by adjusting the rotation angle of the plate chain and the number of standard chain plate sections; the plate chain can move up and down in the U-shaped slot to meet the turning over of prefabricated columns with different cross-sectional styles and sizes; the limiting hole is set to a vertical long strip, and the vertical spacing conforms to the difference in building module of each level of the anchor steel bar length of the prefabricated column, which can adapt to different anchor steel bar lengths at the column bottom; the bracket is welded by a support arm and a support plate, and the support arm is provided with a barb, and the barb passes through the limiting hole and is hung down and fixed.

2. The auxiliary device for hoisting and turning prefabricated columns of different cross-sections according to claim 1 is characterized in that: The total length of the pulley support column is the same as the length of the support column.

3. The auxiliary device for hoisting and turning prefabricated columns of different cross-sections according to claim 1 or 2, characterized in that: The support plate is in an arc shape, and the width of the support plate is equal to the width from the outer side of the prefabricated column anchor steel bar to the column edge.

Images