Auxiliary lifting appliance for lifting steel column

Abstract

The utility model discloses an auxiliary lifting appliance for lifting a steel column, and belongs to the field of constructional engineering construction. The device comprises a bolt and a U-shaped clamping piece which are mounted on a connecting plate at the top end of a steel column; a first hole and a second hole are respectively formed in two end parts of the U-shaped clamping piece; a third hole is formed in the top end connecting plate; the head of the plug pin is bent into an annular structure, and the size of the annular structure is larger than that of the third hole. The tail of the bolt sequentially penetrates through the first hole, the third hole and the second hole and is located inside the top connecting plate, and the head is intercepted outside the top connecting plate through an annular structure; a second rope is fixed to the annular structure, and a first rope is fixed to the U-shaped clamping piece. According to the utility model, lifting lug welding and cutting procedures are saved for steel column hoisting, the construction efficiency is improved, and the performance of the steel column is not damaged; high-altitude operation of workers is avoided, and the safety risk is reduced; and the auxiliary lifting appliance can be recycled for many times and is good in economical efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building engineering construction, and specifically relates to an auxiliary lifting appliance for steel column hoisting. BACKGROUND

[0002] In steel structure hoisting construction, when a steel column is lifted, a lifting lug is usually welded on the top end connecting plate of the steel column or a hoisting hole is cut, which is used to connect a hoisting rope (steel wire rope). The steel column is temporarily fixed by inserting an anchor bolt, and after initial correction, the lifting hook and the steel wire rope need to be manually removed in the air, and if there is a lifting lug, the lifting lug also needs to be cut, which wastes manpower and resources and increases the risk of falling from the air and the risk of the steel column toppling over.

[0003] A Chinese invention patent with the publication number CN106976794A discloses a steel column hoisting hook-removing-free device, which comprises a first lifting rope, a second lifting rope and a limiting device. The first lifting rope is connected to the outer wall of the bottom end of a steel column to be hoisted and is used to hoist the steel column. The second lifting rope is connected to the limiting device and is used to hoist the limiting device. The limiting device is used to limit the inclination angle of the steel column to be hoisted. The second lifting rope makes the position of the limiting device higher than the center of gravity of the steel column to be hoisted when the steel column is hoisted, and makes the limiting device close to the bottom end of the steel column to be hoisted after the hoisting of the steel column is completed. A Chinese utility model patent with the publication number CN11004218U discloses a steel column hoisting tool and a steel column hoisting structure. The device comprises a pair of lifting frames. Each lifting frame comprises a lifting plate and a fixed plate which are fixedly connected. The lifting plate is vertically connected to the upper surface of the fixed plate. A first clamping groove for clamping the top plate of a steel column is formed in one side of the lifting plate. The first clamping groove is parallel to the fixed plate. A second clamping groove for clamping the flange plate of an H-shaped steel column is formed in one side of the fixed plate. The second clamping groove and the first clamping groove are located on the same side of the lifting frame. A lifting hole is formed in the top of the lifting plate. Although the above-mentioned disclosed device does not need to weld a lifting lug in advance and eliminates the subsequent lifting lug cutting work, the device structure is relatively complex and is not convenient for practical application.

[0004] Therefore, there is an urgent need to provide a new auxiliary lifting appliance for steel column hoisting. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects in the prior art and providing an auxiliary lifting appliance for steel column hoisting. The device is a reusable auxiliary lifting appliance. A steel wire rope can be used to pull and hoist a steel column through the auxiliary lifting appliance. The pin type design of the auxiliary lifting appliance is used. After the hoisting and correction of the steel column are completed, the auxiliary lifting appliance is automatically separated through the pulling of the two end ropes, and then the auxiliary lifting appliance is installed on another steel column to complete the hoisting.

[0006] The specific technical solutions adopted by the utility model are as follows:

[0007] The utility model provides a kind of auxiliary lifting appliance for steel column hoisting, including bolt and U-shaped clamp piece being installed on the top end connecting plate of steel column;

[0008] The U-shaped clamp piece is of U-shaped structure, and first and second holes are respectively provided in two ends thereof; a third hole is provided in the top end connecting plate; the head of the bolt is bent into a ring structure, and the size of the ring structure is larger than that of the third hole; the tail of the bolt passes through the first, third and second holes in sequence and is located inside the top end connecting plate, and the head is trapped outside the top end connecting plate by the ring structure; a second rope is fixed at the ring structure, and a first rope is fixed on the U-shaped clamp piece.

[0009] Preferably, the third hole is provided at the center of the top end connecting plate of the steel column.

[0010] Preferably, the diameter of the bolt is slightly smaller than the hole diameter of the first, second and third holes, and the bolt is in clearance fit with the U-shaped clamp piece and the top end connecting plate.

[0011] Preferably, the bolt is made of a round steel bar with a length of 300 mm, and the head is bent into a ring structure with a diameter of 100 mm.

[0012] Preferably, the first, second and third holes are circular holes.

[0013] Preferably, the second rope spans the disc of the bolt pulley.

[0014] Preferably, one end of the first rope is fixedly connected with the U-shaped clamp piece, and the other end is connected with the acting end of the vertical transportation tool.

[0015] Preferably, the first rope is a steel wire rope.

[0016] Preferably, the second rope is a cotton rope.

[0017] Preferably, the first rope and the U-shaped clamp piece, and the second rope and the ring structure are detachably connected.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The auxiliary lifting appliance for steel column hoisting is simple to manufacture; compared with the traditional hoisting method, the utility model saves the ear welding and cutting process for steel column hoisting, improves the construction efficiency, and does not damage the performance of the steel column; the high-altitude operation of workers is avoided, and the safety risk is reduced; the auxiliary lifting appliance can be used repeatedly, and is economical. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1This is a schematic diagram of the connection structure of the device in use.

[0021] Figure 2 This is a front view structural diagram of the device of this utility model;

[0022] Figure 3 This is a side view of the device of this utility model.

[0023] The attached diagram is labeled as follows: steel column 1, pin 2, U-shaped clamp 3, first rope 4, second rope 5. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0025] In the description of this utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected, i.e., there is an intermediate element. Conversely, when an element is said to be "directly" connected to another element, there is no intermediate element.

[0026] In this utility model, for ease of description, Figure 1 The upper side is defined as the "outer side of the top connecting plate" and the lower side is defined as the "inner side of the top connecting plate"; unless otherwise specified, the positional relationship of this utility model shall be described in this way.

[0027] like Figure 2 and 3 As shown, this utility model provides an auxiliary lifting device for steel column hoisting. The auxiliary lifting device mainly includes a pin 2 and a U-shaped clamp 3. Both the pin 2 and the U-shaped clamp 3 can be detachably installed on the top connecting plate of the steel column 1. The components cooperate with each other to achieve the function of assisting in the hoisting of the steel column. The preferred implementation of each component is described in detail below.

[0028] In this utility model, the U-shaped clip 3 has a U-shaped structure, with two feet located on the inner and outer sides of the top connecting plate, and a first hole and a second hole respectively opened on the ends of the two feet.

[0029] As a preferred embodiment of the utility model, the U-shaped clamping piece 3 can adopt a semi-elliptical finished product, the first hole and the second hole at both ends are circular holes, and the diameters of the first hole and the second hole are slightly larger than the diameter of the bolt, so that the bolt can pass through the first hole and the second hole.

[0030] In the utility model, the third hole is arranged on the top end connecting plate of the steel column 1.

[0031] As a preferred embodiment of the utility model, the third hole can be arranged at the center position of the top end connecting plate of the steel column 1, so that the stress is uniform during hoisting, the steel column does not overturn during hoisting, and hoisting is stably completed. The third hole can be a circular hole, which facilitates the hole opening and also facilitates the smooth insertion of the tail of the bolt.

[0032] In the utility model, the tail of the bolt 2 is a straight rod structure, the head of the bolt 2 is bent into a ring structure, and the size of the ring structure is slightly larger than the size of the third hole, so that the bolt can pass through the third hole. The tail of the bolt 2 passes through the first hole, the third hole and the second hole in turn and is located on the inner side of the top end connecting plate, and the head is retained on the outer side of the top end connecting plate through the ring structure.

[0033] That is, the two ends of the U-shaped clamping piece are located on both sides of the top end connecting plate of the steel column, and the bolt passes through the third hole of the top end connecting plate and the first hole and the second hole of the U-shaped clamping piece at the same time, and is connected with the steel column.

[0034] As a preferred embodiment of the utility model, the diameter of the bolt 2 is slightly smaller than the diameters of the first hole, the second hole and the third hole, and the bolt 2 is in clearance fit with the U-shaped clamping piece 3 and the top end connecting plate, so that the bolt 2 can pass through the first hole, the second hole and the third hole. In actual use, the bolt 2 is made of round steel. The length of the bolt should be long enough, so that the bolt will not fall out of the holes of the U-shaped clamping piece 3 and the top end connecting plate during hoisting; for example, in the embodiment, the bolt 2 is made of round steel with a length of about 300mm, and the head is bent into a ring structure with a diameter of 100mm. The size and shape of the ring structure can be adjusted according to actual conditions, as long as the top of the bolt 2 does not fall into the first hole, the second hole and the third hole, so as to facilitate the smooth progress of hoisting.

[0035] In the utility model, as shown in Figure 1 The ring structure is fixed with a second rope 5, and the U-shaped clamping piece 3 is fixed with a first rope 4.

[0036] In actual use, the second rope 5 should cross the disc of the pin pulley, and the second rope 5 can be selected as a common cotton rope, and the detachable connection mode should be adopted between the second rope 5 and the ring structure, so as to facilitate the recycling use. One end of the first rope 4 is fixedly connected with the U-shaped clamping piece 3, and the other end is connected with the acting end of the vertical transportation tool (such as a car hoist or a tower crane, etc.). The first rope 4 can be a steel wire rope, and the detachable binding should be adopted between the first rope 4 and the U-shaped clamping piece 3, so as to facilitate the recycling use.

[0037] Based on the above-mentioned auxiliary lifting device for steel column hoisting, in actual use, the second rope 5 passes through the pin pulley and is connected with the plug at one end. One end of the first rope 4 is fixedly connected with the U-shaped clamping piece 3, and the other end is connected with the car hoist (or the tower crane or other vertical transportation tools). The auxiliary lifting device is connected, so that the steel column is hoisted from the horizontal state to the vertical state. After the correction of the steel column is completed, the plug is pulled out at the other end of the second rope by the pin pulley, so that the auxiliary lifting device for hoisting the steel column is separated from the steel column. The U-shaped clamping piece and the plug are connected with the first rope and the second rope respectively, and after use, the next steel column can be reconnected and hoisted.

[0038] When the steel column is lifted, the auxiliary lifting device is fixed with the steel column through the third hole on the top end connecting plate of the steel column, and the steel column is hoisted. Under this kind of operation: without welding lifting lugs on each steel column, the lifting lug material is saved, and the labor cost of lifting lug welding and cutting is saved. After the correction of the steel column hoisting is completed, the worker can pull out the plug at the second rope at the hoisting position of the steel column, so that the auxiliary lifting device is separated from the steel column. Under this kind of operation: the worker does not need to operate in the high altitude of the steel column, which reduces the risk on site. Finally, after the hoisting is completed, the auxiliary lifting device can be moved to the next hoisting position of the steel column, and the operation is repeated, which is economical and practical, and saves cost.

[0039] The above-mentioned embodiment is only a preferred scheme of the present application, but it is not used to limit the present application. The ordinary skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, any technical scheme obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. An auxiliary hoist for hoisting a steel column, characterized by, The bolt (2) and the U-shaped clamping piece (3) are installed on the top connecting plate of the steel column (1); The U-shaped clamping piece (3) is in a U-shaped structure, and first and second holes are respectively formed in two ends thereof; a third hole is formed in the top connecting plate; the head of the bolt (2) is bent into a ring structure, and the size of the ring structure is greater than that of the third hole; the tail of the bolt (2) sequentially passes through the first hole, the third hole and the second hole and is located inside the top connecting plate, and the head is retained outside the top connecting plate through the ring structure; the second rope (5) is fixed at the ring structure, and the first rope (4) is fixed on the U-shaped clamping piece (3).

2. The auxiliary lifting device for lifting a steel column according to claim 1, characterized in that, The third hole is formed at the center of the top connecting plate of the steel column (1).

3. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, The diameter of the bolt (2) is slightly smaller than the diameters of the first, second and third holes, and the bolt (2) is in clearance fit with the U-shaped clamping piece (3) and the top connecting plate.

4. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, The bolt (2) is made of a round steel with a length of 300 mm, and the head is bent into a ring structure with a diameter of 100 mm.

5. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, The first, second and third holes are all circular holes.

6. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, The second rope (5) crosses the disc of the bolt pulley.

7. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, One end of the first rope (4) is fixedly connected with the U-shaped clamping piece (3), and the other end is connected with the acting end of the vertical transportation tool.

8. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, The first rope (4) is a steel wire rope.

9. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, The second rope (5) is a cotton rope.

10. The auxiliary hoisting device for hoisting a steel column according to claim 1, characterized in that, The first rope (4) and the U-shaped clamping piece (3) and the second rope (5) and the ring structure are all in detachable connection.

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