Traction device in limited state

Abstract

The utility model discloses a traction device in a limited state, which comprises a door-type support frame consisting of a latticed column and a distribution beam, the support frame is arranged on a concrete beam right above a concrete column, the bottom end of the latticed column is fixedly connected with the concrete beam, the concrete beam is tightly held by a hoop arranged below the latticed column, and the distribution beam is arranged above the latticed column. A pulley is installed at the end, making contact with the concrete column, of the hoisted object and makes rolling contact with the concrete column, a movable pulley is arranged at the upper end of the hoisted object, the lower end of the fixed pulley is connected with one end of a steel strand rope, and the other end of the steel strand rope is connected and fixed to a winch on the ground after sequentially winding around the movable pulley and the fixed pulley. Not only can quick and accurate lifting of components or equipment be realized, but also various safety risks in the construction process can be effectively prevented, so that the construction quality and efficiency are greatly improved. Meanwhile, the equipment also has better universality and adaptability, and can be widely applied to construction sites of various scales and types.

Description

Technical Field

[0001] The utility model belongs to the technical field of building hoisting equipment, and particularly relates to a traction device in a restricted state. Background Art

[0002] With the advancement of urbanization and the continuous development of building structures, there will be areas with limited space inside construction sites or factories, and areas that cannot be covered by tower cranes or are restricted by truck cranes, which will lead to great construction difficulties and delayed construction periods. Therefore, a traction device in a restricted state is urgently needed to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a traction device in a restricted state, which ensures the convenience and operability of components and equipment during the hoisting construction process, has good stability and strong safety performance, saves costs and improves work efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a traction device in a restricted state, comprising a portal support frame composed of a lattice column and a distribution beam, the support frame being installed on a concrete beam directly above the concrete column, the bottom end of the lattice column being fixedly connected to the concrete beam, and the concrete beam being clamped by a clamping hoop arranged under the lattice column, a fixed pulley facing the concrete column being arranged on the lower middle side of the distribution beam, a roller pulley being installed at the contact end of the hoisting object with the concrete column so as to roll in contact with the concrete column, a movable pulley being arranged at the upper end of the hoisting object, the lower end of the fixed pulley being connected to one end of a steel strand, and the other end of the steel strand being connected to a winch fixed to the ground after winding around the movable pulley and the fixed pulley in sequence.

[0005] Furthermore, the lattice column is a four-limb lattice column, a column foot bottom plate is welded to the bottom of the lattice column, and the column foot bottom plate is connected to the concrete beam through chemical anchor bolts or anchor bars.

[0006] Furthermore, the clamp includes columns welded to the four corners of the column foot bottom plate, two columns on each side are clamped on the concrete beam, and the lower opening is closed by a fixed connection beam.

[0007] Furthermore, the distribution beam is made of section steel, a lifting lug is welded at the bottom of the lower flange of the distribution beam, and the fixed pulley is suspended on the lifting lug.

[0008] Furthermore, the fixed pulley adopts a four-door fixed pulley, and the movable pulley adopts a four-door movable pulley.

[0009] The traction device of the utility model is produced in the factory and assembled on site, which is easy to operate and suitable for lifting heavy objects in narrow spaces. It can not only realize the rapid and accurate lifting of components or equipment, but also effectively prevent various safety risks in the construction process, thereby greatly improving the construction quality and efficiency. At the same time, the equipment of the utility model also has good versatility and adaptability, and can be widely used in construction sites of various sizes and types. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a schematic diagram of the pulley block of the utility model;

[0012] Figure 3 It is a structural schematic diagram of the support frame of the utility model;

[0013] Figure 4 It is a front view of the support frame of the utility model;

[0014] Figure 5 It is a side view of the support frame of the utility model.

[0015] In the figure: 1. support frame; 11. lattice column; 12. distribution beam; 13. clamp; 131. column; 132. cross beam; 2. fixed pulley; 3. steel column; 31. roller pulley; 32. movable pulley; 4. steel rope; 5. winch; 6. concrete beam; 7. concrete column. DETAILED DESCRIPTION

[0016] In order to better understand the purpose, structure and function of the utility model, the traction device of the utility model in a restricted state is further described in detail below with reference to the accompanying drawings.

[0017] like Figure 1 and Figure 2 As shown, a traction device in a restricted state includes a portal support frame 1 composed of a lattice column 11 and a distribution beam 12. The support frame 1 is installed on a concrete beam 6 directly above a concrete column 7. The bottom end of the lattice column 11 is fixedly connected to the concrete beam 6, and the concrete beam 6 is clamped by a clamp 13 arranged below the lattice column 11. A fixed pulley 2 facing the concrete column is arranged on the lower side of the middle part of the distribution beam 12. A roller pulley 31 is installed at the contact end of the hoisted object with the concrete column 7 to contact the concrete column 7. A movable pulley 32 is arranged at the upper end of the hoisted object. The lower end of the fixed pulley 2 is connected to one end of a steel strand 4. The other end of the steel strand 4 is connected to a winch 5 fixed to the ground after winding around the movable pulley 32 and the fixed pulley 2 in sequence.

[0018] like Figure 3~Figure 5 As shown, the support frame 1 is composed of a lattice column 11, a distribution beam 12 and a hoop 13. The lattice column 11 is a four-limb lattice column with a size of 700mm*700mm. The components are made of 60*8 angle steel, and the components are connected by CO 2Gas shielded welding is used, and 20 channel steels are welded to the base of the lattice column 11 for reinforcement. The base plate of the lattice column 11 is welded to the bottom and connected to the concrete beam 6 through chemical anchor bolts or anchor bars. The hoop 13 is composed of a column 131 and a beam 132, both of which are made of channel steel. The column 131 is welded to the four corners of the bottom plate of the column base. One end of the beam 132 is connected to the column 131 through a pin, and the other end is connected with a bolt.

[0019] A cross double angle steel (L100*8) is welded on the top of the lattice column 11 as a support, and a 16mm thick cover plate is welded on the support. The distribution beam 12 uses H550*300*6*10 steel and is connected to the cover plate through a fillet weld. A lifting lug is welded at the bottom of the lower flange of the distribution beam 12, and a 10t four-door fixed pulley is hung on the lifting lug. A four-door movable pulley is set on the top of the component or equipment, and the winch 5 is used as the power system. The movable pulley 32 and the fixed pulley 2 are respectively connected through the steel strand 4 on the winch 5 to form a pulley block.

[0020] This embodiment takes the traction of the steel column 3 as an example, and the construction method is as follows, which is also applicable to construction in other scenarios.

[0021] 1. Set up the support frame 1. The support frame 1 is assembled on site. The components are prefabricated in the factory. The concrete beam 6 is pre-embedded with chemical anchor bolts and connected to the lattice column 11. The distribution beam 12 is connected to the lattice column 11 by friction-type high-strength bolts. After the upper structure of the support frame 1 is in place, the hoop 13 is installed. The column 131 of the hoop 13 is connected to the bottom plate of the lattice column 11 by CO 2 Gas shielded welding is used, and the cross beam 132 and the column 131 are connected by a pin on one side and high-strength bolts on the other side.

[0022] 2. Acceptance of support frame 1: Check whether the overall structure of support frame 1 is complete, whether all components have been installed in place, and whether there is any obvious damage or wear.

[0023] 3. Preload the support frame 1. The weight of the preloaded weight should be greater than the weight of the steel column 3 in the actual operation, so as to ensure that the support frame 1 can bear the weight of the steel column 3 in the actual operation; install the preloaded weight on the support frame 1 to simulate the situation in the actual operation; during the preloading process, monitor the displacement, stress and other parameters of the support frame 1 in real time. If the support frame 1 shows an unstable situation (such as excessive displacement, stress exceeding the allowable stress of the material, etc.), the design of the support frame 1 needs to be adjusted; if it is found that the support frame 1 cannot meet the needs during the preloading process, the design of the support frame 1 can be adjusted according to the monitoring data; the adjusted support frame 1 needs to be preloaded again until it can meet the needs of the actual operation.

[0024] 4. Select winch 5 as the power device. The winch 5 is placed vertically to the steel column 3 in place and fixed on the top of the floor to ensure that the winch 5 will not move when running at no load. A no-load test should be carried out before operation to check the braking performance. After confirming that the brake is reliable, a heavy object lifting test can be carried out; the four-door fixed pulley is suspended by the lifting ear of the distribution beam 12 to constrain the translational displacement of the fixed pulley 2, which can rotate out of the plane around the lifting ear to avoid large horizontal forces during traction; four-door movable pulleys are installed at the top of the steel column 3, and the movable pulley 32 moves synchronously with the steel column 3.

[0025] 5. The steel column 3 is hoisted and moved to the designated position by a flatbed trolley, located below the movable pulley 32, with the top of the steel column 3 perpendicular to the concrete column 7; the winch 5 is connected to the fixed pulley 2 and the movable pulley 32 respectively through the steel strand 4, and the length of the steel strand 4 is adjusted; the winch 5 is started to slowly lift the steel column 3; the roller pulley 31 is installed at the contact end of the steel column 3 and the concrete column 7 to prevent damage to the concrete column 7; during the traction process of the steel column 3, a steel wire rope is set at the bottom to avoid shaking or overturning during the traction process; in order to ensure the safety of the operation, various parameters in the lifting process, such as the lifting height, speed, stability of the steel column 3, etc., are monitored in real time. Once an abnormal situation is found, an alarm can be immediately issued to stop the lifting operation.

[0026] This embodiment uses a pulley block consisting of four movable pulleys and four fixed pulleys, which realizes significant labor saving and flexible change of force direction through the carefully designed rope arrangement and the labor-saving characteristics of the movable pulley; the winch 5 is responsible for driving the steel column 3 up and down. The winch 5 is operated electrically or manually, and the lifting speed and force can be adjusted to adapt to the lifting of objects of different weights; the pulley block and the winch 5 are connected by the steel rope 4, and the pulley block can effectively reduce the friction during the hoisting process, thereby reducing the workload of the winch 5 and improving the service life of the overall equipment.

[0027] The utility model adopts a combination of a support frame 1, a winch 5, a pulley block, and equipment and methods such as a steel column fixing mechanism and a safety detection device, which can not only realize the rapid and accurate lifting of the steel column 3, but also effectively prevent various safety risks during the construction process, thereby greatly improving the construction quality and efficiency. At the same time, the equipment and method of the utility model also have good versatility and adaptability, and can be widely used in construction sites of various sizes and types.

[0028] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A traction device in a restricted state, characterized in that: The invention comprises a portal support frame (1) composed of a lattice column (11) and a distribution beam (12), wherein the support frame (1) is installed on a concrete beam (6) directly above a concrete column (7), the bottom end of the lattice column (11) is fixedly connected to the concrete beam (6), and the concrete beam (6) is tightly held by a clamp (13) arranged below the lattice column (11), a fixed pulley (2) facing the concrete column (7) is arranged at the lower side of the middle part of the distribution beam (12), a roller pulley (31) is installed at the contact end of the hoisted object with the concrete column (7) so as to roll with the concrete column (7), a movable pulley (32) is arranged at the upper end of the hoisted object, the lower end of the fixed pulley (2) is connected to one end of a steel strand (4), and the other end of the steel strand (4) is connected to a winch (5) fixed to the ground after winding around the movable pulley (32) and the fixed pulley (2) in sequence.

2. The traction device in a restricted state according to claim 1, characterized in that: The lattice column (11) is a four-limb lattice column. A column foot bottom plate is welded to the bottom of the lattice column (11), and the column foot bottom plate is connected to the concrete beam (6) via chemical anchor bolts or anchor bars.

3. The traction device in a restricted state according to claim 2, characterized in that: The hoop (13) comprises upright posts (131) welded to the four corners of the column foot bottom plate, two upright posts (131) on each side are clamped on the concrete beam, and the lower opening is closed by a fixed connecting cross beam (132).

4. The traction device in a restricted state according to claim 1, characterized in that: The distribution beam (12) is made of section steel, a lifting lug is welded at the bottom of the lower flange of the distribution beam (12), and the fixed pulley (2) is suspended on the lifting lug.

5. The traction device in a restricted state according to any one of claims 1 to 4, characterized in that: The fixed pulley (2) adopts a four-door fixed pulley, and the movable pulley (32) adopts a four-door movable pulley.

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