A multifunctional fixed pulley device installed on the top of a steel structure factory roof steel beam

By installing a multi-functional fixed pulley device on the top of the steel beams of the steel structure factory building, the problems of complex and costly ALC wall panel hoisting were solved, achieving a safe and efficient hoisting effect.

CN224467435UActive Publication Date: 2026-07-07CHINA MCC5 GROUP CORP LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA MCC5 GROUP CORP LTD
Filing Date
2025-06-20
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In traditional technology, the installation of ALC wall panels on top of steel beams in steel structure workshops is complex, costly, and inefficient. They cannot be directly hoisted to the top using fixed pulleys and require the use of other equipment.

Method used

Design a multifunctional fixed pulley device, including a detachable mounting base and a pulley, which is fixed to the top of a steel beam by hook bolts. The pulley is located above the top of the steel beam. It adopts a hot-dip galvanized rectangular tube and a lifting lug structure to simplify the installation process.

Benefits of technology

This enabled the safe and efficient hoisting of ALC wall panels, reduced equipment costs, simplified the hoisting process, and improved assembly efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multifunctional fixed pulley device installed on the top of steel structure factory roof steel beam, solve the technical problem that the existing technology hoists the ALC wallboard at the top position of steel beam and needs to connect other hoisting equipment except winch to cause hoisting process complex and hoisting efficiency reduction. The utility model discloses detachable installation on the top of steel beam's mounting seat, the pulley on the mounting seat, the fixed pulley mounting seat between the fixed pulley mounting seat and steel beam is equipped with fixed establishment, and the mounting seat is equipped with fixed pulley mounting seat, and the pulley is installed on the mounting seat through the fixed pulley mounting seat, and the pulley elevation is above the top of steel beam. The utility model fixed pulley is above the top of I -beam, can effectively through ALC wallboard hoist to the top of I -beam, when hoisting the ALC wallboard of I -beam top position, need not add other hoisting equipment, need not adopt the complex hoisting method of cooperation of multiple hoisting equipment, can effectively reduce hoisting equipment cost and simplify hoisting process, improve hoisting efficiency.
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Description

Technical Field

[0001] This utility model belongs to the technical field of building steel structure assembly equipment, specifically relating to a multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building. Background Technology

[0002] With the country's vigorous development of the steel structure industry, the level of steel structure fabrication and installation has gradually improved, and steel structure factories have sprung up like mushrooms after rain. ALC wall panels have the characteristics of high fire resistance, customizable production in factories, and fast installation speed, and are increasingly suitable for the main components of fire-resistant partition walls in steel structure factories.

[0003] Traditionally, when using ALC wall panels as the main components of fire-resistant partition walls in steel structure factory buildings, hooks are welded to the bottom of the steel beams, fixed pulleys are assembled and fixed to the hooks, and then a winch is used to lift the ALC wall panels from the ground to the construction site. In this way, the position of the fixed pulleys is lower than the bottom of the steel beams, which makes it impossible to hoist the ALC wall panels to the top of the steel beams by the winch. This makes it difficult to assemble the ALC wall panels at the top of the steel beams, and often requires the use of other hoisting equipment to complete the hoisting of the ALC wall panels at the top of the steel beams. This not only complicates the hoisting method, but also increases the assembly cost of ALC wall panels and reduces the assembly efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a multi-functional fixed pulley device that can be installed on the top of the steel beams of a steel structure factory building, so as to solve the problems of complex assembly and hoisting of ALC wall panels, high assembly cost of ALC wall panels, and low hoisting and assembly efficiency in the traditional technology for the top of steel beams.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A multifunctional fixed pulley device for installation on the top of steel beams of a steel structure factory building includes a mounting base that can be detachably installed on the top of the steel beam, and a pulley installed on the mounting base; a fixing mechanism is provided between the fixed pulley mounting base and the steel beam, the mounting base is provided with a fixed pulley mounting seat, the pulley is installed on the mounting base through the fixed pulley mounting seat, and the elevation of the pulley is above the top of the steel beam.

[0007] Furthermore, the mounting base is a rectangular tube that is fixedly installed on the top of the steel beam.

[0008] Furthermore, the fixing mechanism includes a hook bolt adapted to the steel beam and a locking nut threaded onto the hook bolt; a through hole adapted to the hook bolt is provided on the rectangular tube, the screw end of the hook bolt extends through the through hole to the top of the rectangular tube, the hook end of the hook bolt hooks onto the bottom surface of the top flange of the steel beam, and the locking nut is threaded onto the screw end of the hook bolt and locked to the top surface of the rectangular tube.

[0009] Furthermore, there are at least two hook bolts, which are fixed to both sides of the steel beam by lock nuts.

[0010] Furthermore, the two ends of the rectangular tube are beveled with downward-facing relief bevels, and pulleys are installed at the relief bevels. A suspension rope passing through the pulley hangs down from the relief bevel.

[0011] Furthermore, the fixed pulley mounting base includes a lug welded and fixed inside the rectangular tube and located at the top of the relief bevel, and the pulley is mounted on the lug.

[0012] Furthermore, a set of lifting lugs is welded into the bevel at both ends of the rectangular tube, and a pulley is installed on each set of lifting lugs.

[0013] Furthermore, the rectangular tube is made of hot-dip galvanized material, and the mounting base is a 200×200×5 hot-dip galvanized rectangular tube that is fixedly installed on the top of the steel beam.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. Through the mounting base and the fixed pulley mounting base, the pulley can be installed on the I-beam and the pulley can be located above the top of the I-beam. In this way, the ALC wall panel hoisted by the pulley can be effectively hoisted to the top of the I-beam. Therefore, when assembling the ALC wall panel at the top of the I-beam, there is no need to add other hoisting equipment besides the winch, and there is no need to use a complicated hoisting method that requires multiple hoisting equipment. This not only effectively reduces the cost of hoisting equipment, but also simplifies the hoisting process, improves hoisting efficiency, and ensures the progress of ALC wall panel hoisting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 (ALC wall panel is hoisted using a single pulley).

[0017] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 (Two pulleys work together to hoist the ALC wall panel).

[0018] Figure 3 This is a top view of the mounting base of this utility model (the pulley and hook bolt are both perspective views).

[0019] Figure 4 This is a schematic diagram of the through hole on the rectangular tube of this utility model.

[0020] Figure 5 This is a schematic diagram of the assembly of the lifting lug and pulley of this utility model.

[0021] The names corresponding to the reference numerals in the attached figures are as follows:

[0022] 1-Mounting base, 2-Lifting lug, 3-Pulley, 4-Hook bolt, 5-Steel beam, 6-ALC wall panel, 7-Leaning bevel, 8-Lifting rope, 9-Locking nut, 10-Through hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Example 1.

[0025] like Figures 1-5 As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0026] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. Through the mounting base and the fixed pulley mounting base, the pulley can be installed on the I-beam and the pulley can be located above the top of the I-beam. In this way, the ALC wall panel hoisted by the pulley can be effectively hoisted to the top of the I-beam. Therefore, when assembling the ALC wall panel at the top of the I-beam, there is no need to add other hoisting equipment besides the winch, and there is no need to use a complicated hoisting method that requires multiple hoisting equipment. This not only effectively reduces the cost of hoisting equipment, but also simplifies the hoisting process, improves hoisting efficiency, and ensures the progress of ALC wall panel hoisting.

[0027] Example 2.

[0028] like Figures 1-5 As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0029] Mounting base 1 is a rectangular tube that is fixedly installed on the top of steel beam 5.

[0030] This embodiment 2, based on embodiment 1, presents a more preferred structure for the mounting base 1. Specifically, the mounting base 1 is a rectangular tube fixedly installed on the top of the steel beam 5. The square structure of the rectangular tube makes the overall structure simple and easy to manufacture, and the materials are also simple and readily available. It also effectively ensures that its bottom surface fits in close contact with the top of the steel beam 5, ensuring the stability of the overall structure and thus ensuring the safe hoisting of the ALC wall panel.

[0031] Example 3.

[0032] like Figures 1-5 As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0033] Mounting base 1 is a rectangular tube that is fixedly installed on the top of steel beam 5.

[0034] The fixing mechanism includes a hook bolt 4 that is compatible with the steel beam 5, and a locking nut 9 that is threaded onto the hook bolt 4; a through hole 10 that is compatible with the hook bolt 4 is provided on the rectangular tube, the screw end of the hook bolt 4 extends through the through hole 10 to the top of the rectangular tube, the hook end of the hook bolt 4 hooks onto the bottom surface of the top flange of the steel beam 5, and the locking nut 9 is threaded onto the screw end of the hook bolt 4 and locked to the top surface of the rectangular tube.

[0035] Based on Example 2, this embodiment 3 provides a more preferred structure for the fixing mechanism. Specifically, the fixing mechanism includes a hook bolt 4 adapted to the steel beam 5, and a locking nut 9 threaded onto the hook bolt 4; a through hole 10 adapted to the hook bolt 4 is provided on the rectangular tube, the screw end of the hook bolt 4 extends through the through hole 10 to the top of the rectangular tube, the hook end of the hook bolt 4 hooks onto the bottom surface of the top flange of the steel beam 5, and the locking nut 9 is threaded onto the screw end of the hook bolt 4 and locked to the top surface of the rectangular tube. The threaded end of the hook bolt 4 is passed through the through hole 10 and extends above the rectangular tube. During this process, the hook end of the hook bolt 4 is kept hooked onto the bottom surface of the top flange of the steel beam 5. Then, the hook bolt 4 is locked with the lock nut 9 so that the hook end of the hook bolt 4 is hooked and fixed to the bottom surface of the top flange of the steel beam 5. The lock nut 9 is pressed against and locked to the top surface of the rectangular tube. At least one hook bolt 4 is set on each side of the steel beam 5, so that the rectangular tube is firmly held on the top flange of the steel beam 5.

[0036] Example 4.

[0037] like Figures 1-5As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0038] Mounting base 1 is a rectangular tube that is fixedly installed on the top of steel beam 5.

[0039] The fixing mechanism includes a hook bolt 4 that is compatible with the steel beam 5, and a locking nut 9 that is threaded onto the hook bolt 4; a through hole 10 that is compatible with the hook bolt 4 is provided on the rectangular tube, the screw end of the hook bolt 4 extends through the through hole 10 to the top of the rectangular tube, the hook end of the hook bolt 4 hooks onto the bottom surface of the top flange of the steel beam 5, and the locking nut 9 is threaded onto the screw end of the hook bolt 4 and locked to the top surface of the rectangular tube.

[0040] There are at least two hook bolts 4, which are fixed to both sides of the steel beam 5 by locking nuts 9.

[0041] This embodiment 4, based on embodiment 3, provides a more preferred structure for the fixing mechanism. Specifically, there are at least two hook bolts 4, which are fixed to both sides of the steel beam 5 by locking nuts 9. Preferably, the hook bolts 4 are arranged in pairs, with at least two pairs, neatly distributed on both sides of the steel beam 5, thus effectively ensuring a stable connection between the rectangular tube and the steel beam 5.

[0042] Example 5.

[0043] like Figures 1-5 As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0044] Mounting base 1 is a rectangular tube that is fixedly installed on the top of steel beam 5.

[0045] The rectangular tube has beveled openings 7 at both ends, with the openings facing downwards. The pulley 3 is installed at the bevel 7, and the suspension rope 8 passing through the pulley 3 hangs down from the bevel 7.

[0046] This embodiment 5, based on embodiment 2, presents a more preferred structure for the rectangular tube. Specifically, both ends of the rectangular tube are beveled at an angle with downward-facing openings 7. A pulley 3 is installed at the bevel 7, and a suspension rope 8 passing through the pulley 3 hangs down from the bevel 7. The bevel 7 on the rectangular tube results in a simple structure, convenient processing, and effectively meets the clearance requirements of the suspension rope 8 passing through the pulley 3.

[0047] Example 6.

[0048] like Figures 1-5 As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0049] Mounting base 1 is a rectangular tube that is fixedly installed on the top of steel beam 5.

[0050] The rectangular tube has beveled openings 7 at both ends, with the openings facing downwards. The pulley 3 is installed at the bevel 7, and the suspension rope 8 passing through the pulley 3 hangs down from the bevel 7.

[0051] The fixed pulley mounting base includes a lug 2 welded and fixed inside the rectangular tube and located at the top of the relief bevel 7, and the pulley 3 is mounted on the lug 2.

[0052] This embodiment 6, based on embodiment 5, presents a more preferred structure for the fixed pulley mounting base. Specifically, the fixed pulley mounting base includes a lifting lug 2 welded and fixed inside the rectangular tube and located at the top of the relief bevel 7, with the pulley 3 mounted on the lifting lug 2. The pulley 3 is mounted inside the rectangular tube via a pair of lifting lugs 2, resulting in a simple structure and reliable function.

[0053] Example 7.

[0054] like Figures 1-5 As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0055] Mounting base 1 is a rectangular tube that is fixedly installed on the top of steel beam 5.

[0056] The rectangular tube has beveled openings 7 at both ends, with the openings facing downwards. The pulley 3 is installed at the bevel 7, and the suspension rope 8 passing through the pulley 3 hangs down from the bevel 7.

[0057] The fixed pulley mounting base includes a lug 2 welded and fixed inside the rectangular tube and located at the top of the relief bevel 7, and the pulley 3 is mounted on the lug 2.

[0058] A set of lifting lugs 2 are welded into the bevel 7 at both ends of the rectangular tube, and a pulley 3 is installed on each set of lifting lugs 2.

[0059] This embodiment 7, based on embodiment 6, provides a more preferred structure for the rectangular tube. Specifically, a set of lifting lugs 2 are welded into the bevels 7 at both ends of the rectangular tube, and a pulley 3 is installed on each set of lifting lugs 2. When using one pulley 3 for hoisting, the winch and the object to be lifted are located on the same side of the wall. When using two pulleys 3 simultaneously, the hoisting rope 8 passes around one pulley 3, is threaded through the rectangular tube, passes through the other pulley 3, and hangs down, with the winch and the object to be lifted located on opposite sides of the wall.

[0060] Example 8.

[0061] like Figures 1-5 As shown, the present invention provides a multi-functional fixed pulley device for installation on the top of the steel beam of a steel structure factory building. The device is characterized by including a mounting base 1 that is detachably installed on the top of the steel beam 5, and a pulley 3 installed on the mounting base 1. A fixing mechanism is provided between the fixed pulley mounting base 1 and the steel beam 5. The mounting base 1 is provided with a fixed pulley mounting seat, and the pulley 3 is installed on the mounting base 1 through the fixed pulley mounting seat. The elevation of the pulley 3 is above the top of the steel beam 5.

[0062] Mounting base 1 is a rectangular tube that is fixedly installed on the top of steel beam 5.

[0063] The rectangular tube is made of hot-dip galvanized material, and the mounting base 1 is a 200×200×5 hot-dip galvanized rectangular tube that is fixedly installed on the top of the steel beam 5.

[0064] This embodiment 8, based on embodiment 2, presents a more preferred structure for the rectangular tube. Specifically, the rectangular tube is made of hot-dip galvanized material, and the mounting base 1 is a 200×200×5 hot-dip galvanized rectangular tube fixedly installed on the top of the steel beam 5. The 200×200×5 hot-dip galvanized rectangular tube offers high structural reliability. By installing it on the top of the H-shaped steel beam, the load is effectively transferred to the H-shaped steel beam, resulting in higher reliability than the traditional fixed pulleys installed at the bottom of the steel beam.

[0065] This utility model is a multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building, which makes the hoisting of ALC wall panels safer, more efficient, and less costly.

[0066] This utility model relates to a multi-functional fixed pulley device installed on the top of the H-shaped steel beams of a steel structure factory roof. The outer shell of the fixed pulley device is a 200×200×5 hot-dip galvanized rectangular tube with beveled ends. Two lifting lugs are respectively installed at the middle of each end of the inner top and welded firmly to the rectangular tube. A pulley is installed between the two lifting lugs for threading the wire rope from the winch. Inside the rectangular tube, two through holes are provided on each side of the H-shaped steel beam for installing hook bolts. The tail of the hook bolt hooks onto the flange of the H-shaped steel beam, and the other end is fitted with a washer and nut. The bolt holes are located laterally along the rectangular tube on both sides of the pulley to avoid the threaded wire rope. When only one pulley is used, the winch and the load to be lifted are located on the same side of the wall. When both pulleys are used simultaneously, the winch and the load to be lifted are located on opposite sides of the wall. Due to the relatively high height of the H-shaped steel beams on the roof, the rope height between the fixed pulley device and the ALC wall panel can be adjusted to ensure that the topmost ALC wall panel is installed in place in one go.

[0067] Traditional fixed pulleys are installed along the entire length of the H-shaped steel beam. This utility model of a multi-functional fixed pulley device places the pulley above the roof steel beam, which can effectively increase the lifting height of heavy objects.

[0068] Traditionally, fixed pulleys are installed on H-beams by welding (the components used to install the fixed pulleys are welded to the H-beams), which can affect the H-beams. This utility model of a multifunctional fixed pulley device allows the fixed pulleys to be installed in any designated position using hook bolts, which is convenient for construction and has almost no impact on the H-beams.

[0069] The rectangular tube of this multifunctional fixed pulley device is a hot-dip galvanized rectangular tube, which has high structural reliability. By installing it on the top of the H-shaped steel beam, the load is effectively transferred to the H-shaped steel beam, which is more reliable than the traditional fixed pulley set at the bottom of the steel beam.

[0070] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building, characterized in that, It includes a mounting base (1) that can be detachably installed on the top of the steel beam (5), and a pulley (3) installed on the mounting base (1); a fixing mechanism is provided between the fixed pulley mounting base (1) and the steel beam (5), and a fixed pulley mounting base is provided on the mounting base (1). The pulley (3) is installed on the mounting base (1) through the fixed pulley mounting base, and the elevation of the pulley (3) is above the top of the steel beam (5).

2. The multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building according to claim 1, characterized in that, The mounting base (1) is a rectangular tube that is fixedly installed on the top of the steel beam (5).

3. A multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building according to claim 2, characterized in that, The fixing mechanism includes a hook bolt (4) adapted to the steel beam (5) and a locking nut (9) threaded onto the hook bolt (4); a through hole (10) adapted to the hook bolt (4) is provided on the rectangular tube, the screw end of the hook bolt (4) extends through the through hole (10) to the top of the rectangular tube, the hook end of the hook bolt (4) hooks onto the bottom surface of the top flange of the steel beam (5), and the locking nut (9) is threaded onto the screw end of the hook bolt (4) and locked onto the top surface of the rectangular tube.

4. A multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building according to claim 3, characterized in that, There are at least two hook bolts (4), which are fixed to both sides of the steel beam (5) by locking nuts (9).

5. A multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building according to claim 2, characterized in that, The rectangular tube has beveled openings (7) at both ends, with the openings facing downwards. The pulley (3) is installed at the bevel (7), and the suspension rope (8) passing through the pulley (3) hangs down from the bevel (7).

6. A multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building according to claim 5, characterized in that, The fixed pulley mounting base includes a lug (2) welded and fixed inside the rectangular tube and located at the top of the relief bevel (7), and the pulley (3) is mounted on the lug (2).

7. A multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building according to claim 6, characterized in that, A set of lifting lugs (2) is welded into the relief bevel (7) at both ends of the rectangular tube, and a pulley (3) is installed on each set of lifting lugs (2).

8. A multi-functional fixed pulley device installed on the top of the steel beams of a steel structure factory building according to claim 2, characterized in that, The rectangular tube is made of hot-dip galvanized material, and the mounting base (1) is a 200×200×5 hot-dip galvanized rectangular tube that is fixedly installed on the top of the steel beam (5).