A device for accurately and quickly installing steel frames in confined spaces

Abstract

The present invention discloses a device for accurately and quickly installing a steel frame in a confined space, relating to the technical field of steel arch frame installation, specifically comprising two groups of lifting connecting rods and a portal arch frame arranged above the two groups of lifting connecting rods, two vertical poles being vertically fixedly installed on the top of the lifting connecting rods, fixing parts for fixing the portal arch frame being arranged above the four vertical poles, and the four vertical poles being fixedly connected by multiple groups of lower cross bars; the present invention is to weld and fix the portal arch frame in advance in the device, and then transfer the welded portal arch frame to a preset position for installation through the cooperation of a forklift, and center the portal arch frame before installation, and control the two sides of the portal arch frame to move inward during installation, so that the portal arch frame is accurately and quickly connected to the installation position, and combined with the portal arch frame that has been welded and centered in advance, the accurate and fast installation of the portal arch frame is achieved, and the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel arch frame installation, and more particularly to a device for accurately and quickly installing a steel frame in a confined space. Background Art

[0002] The conventional method for installing steel frames in the air in confined spaces is to set up an operating platform, lift the components to the operating platform manually or by a hoist, and then install and weld the steel frames on the operating platform.

[0003] When renovating a building unit, a portal steel arch frame is installed indoors. Since the building is an existing one and the portal steel arch frame is newly installed and fits in with the arch, the construction space is limited. In addition, the installation height is high and the portal steel arch frame is heavy. The above installation method has the problems of low efficiency, labor consumption, and high construction difficulty. It is impossible to complete the welding of the steel frame before installation and then quickly complete the installation of the portal steel arch frame by cooperating with the lifting device and forklift.

[0004] Moreover, during the actual installation process of the portal steel arch frame and the wall of the existing building, the side wall or top of the portal steel arch frame is prone to scratching against the wall of the existing building. It is impossible to fine-tune the shape of the side wall of the portal steel arch frame to make the portal arch frame quickly fit the installation position, reduce scratching, and install accurately. For this purpose, a solution is now provided. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for accurately and quickly installing a steel frame in a confined space.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for accurately and quickly installing a steel frame in a confined space, comprising two sets of lifting connecting rods and a portal arch frame arranged above the two sets of lifting connecting rods, two vertical poles being vertically fixedly installed on the top of the lifting connecting rods, fixing members for fixing the portal arch frame being arranged above the four vertical poles, the four vertical poles being fixedly connected by multiple sets of lower cross bars, and centering components for centering the portal arch frame being arranged between the multiple sets of lower cross bars;

[0007] The centering assembly includes a fixed plate fixedly connected to a plurality of vertical poles, a cylinder is vertically fixedly inserted on the fixed plate, an output end of the cylinder is fixedly connected to a lifting plate, a pair of centering plates are fixedly provided on both sides of the lifting plate, and centering wheels are rotatably provided at the ends of the centering plates, and the centering wheels are in driving cooperation with the side walls of the portal arch;

[0008] A locking plate is fixedly provided on the bottom side wall of the extended end of the cylinder, and steel cables are connected to both sides of the locking plate. Limit rollers are provided on both sides of the cylinder, and the outer wall of the steel cable passes through the limit rollers and is detachably connected to the bottom side wall of the portal arch.

[0009] Furthermore, a limiting shaft is fixedly provided at the center of the limiting roller, and the limiting shaft is rotatably connected to the vertical rod via a bearing.

[0010] Furthermore, two groups of limiting disks are fixedly provided on the outer wall of the middle part of the limiting roller, and the steel rope is located between the two groups of limiting disks.

[0011] Furthermore, the four vertical poles are fixedly connected by multiple groups of upper cross bars, and multiple groups of connecting rods arranged parallel to each other are fixedly installed between the two upper cross bars.

[0012] Furthermore, the fixing part includes two top rods, which are fixedly connected to the two vertical rods below them, and the top rods are located directly above the lifting connecting rods. A support rod is fixedly provided directly above the top rods, and fixing rods are fixedly provided on the top walls on both sides of the support rods.

[0013] Furthermore, the two vertical poles are located on the outer wall below the top pole and are fixedly connected by a top cross bar.

[0014] The device for accurately and quickly installing a steel frame in a confined space has a specific working method comprising the following steps:

[0015] Pre-operation treatment: First, assemble and fix the portal arch on the device, and then use a forklift to transport the device to one side of the installation location. At this time, the extended end of the cylinder is at half length, and both steel cables are in a relaxed state.

[0016] Centering adjustment: First, control the extended end of the cylinder to retract from half its length to the shortest. During this process, the lifting plate moves upward, driving the four centering wheels to rise, so that each centering wheel provides a rolling thrust to the bottom of the portal arch. When the four centering wheels are all rollingly connected with the inner wall of the portal arch, the four centering wheels play the role of adjusting the center of the portal arch, facilitating the subsequent accurate and rapid installation of the portal arch.

[0017] Close installation: After completing the centering operation of the portal arch, control the extended end of the cylinder from the shortest to the longest. During this process, the locking plate moves downward to pull the two steel cables to tighten. The two steel cables are used to pull the two sides of the portal arch respectively, so that the two sides of the portal arch are brought closer together, avoiding the portal arch from scraping against the inner wall of the installation location, thereby improving the efficiency of the portal arch installation;

[0018] Complete the installation: Use a forklift to transport the device to the installation location, and finally lift the portal arch stably and vertically to the installation elevation. After connecting and fixing the portal arch, complete the installation.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention controls the extended end of the cylinder to shrink from half its length to the shortest, so that the lifting plate moves upward, and a pair of centering plates on both sides drive the centering wheels to move upward synchronously, so that each centering wheel provides a rolling thrust to the bottom of the portal arch frame. When the four centering wheels are all rollingly connected with the inner wall of the portal arch frame, the four centering wheels play a role in adjusting the center of the portal arch frame, which facilitates the subsequent accurate and rapid installation of the portal arch frame.

[0021] 2. The present invention controls the extended end of the cylinder from the shortest to the longest, moves the locking plate downward, pulls the two steel cables to tighten, and pulls the two sides of the portal arch frame respectively through the two steel cables, so that the two sides of the portal arch frame move inward, which helps to reduce the deviation during the installation process and avoids the portal arch frame from scraping against the inner wall of the installation position, thereby improving the efficiency of the portal arch frame installation.

[0022] 3. The device of the present invention can be used with a forklift to carry out the transportation and lifting of the portal arch, effectively solving the problem that conventional lifting and hoisting operations cannot be carried out in confined spaces. At the same time, the device has a simple structure, can be adjusted according to actual conditions, is flexible and can be used as a construction operation platform, a climbing vehicle, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the appearance of the overall structure of the present invention.

[0024] Figure 2 It is a three-dimensional diagram of the connection relationship between the center component and the vertical pole in the present invention.

[0025] Figure 3 This is a three-dimensional diagram of the appearance structure of the central component in the present invention.

[0026] Figure 4 It is a three-dimensional diagram of the limiting roller and the limiting plate in the present invention.

[0027] Figure 5 It is a three-dimensional diagram of the middle pole, upper cross bar and connecting rod of the present invention.

[0028] Figure 6 It is a structural stereogram of the connection relationship between the top crossbar and the vertical poles in the present invention.

[0029] Figure 7 It is a front view of the overall structure of the present invention.

[0030] The accompanying drawings are marked as follows: 1. lifting connecting rod; 3. portal arch; 4. vertical rod; 5. lower cross bar; 6. upper cross bar; 7. connecting rod; 8. top rod; 9. supporting rod; 10. fixing rod; 11. top cross bar;

[0031] 2. Centering assembly; 21. Fixed plate; 22. Cylinder; 23. Lifting plate; 24. Centering plate; 25. Centering wheel; 26. Steel rope; 27. Locking plate; 28. Limiting roller; 29. ​​Limiting disk; 210. Limiting shaft. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1-Figure 7 As shown, the problem in the prior art that the portal arch 3 cannot be accurately and quickly fitted to the installation position by controlling the shape of the portal arch 3 can be solved by the following solution;

[0034] In this embodiment, a device for accurately and quickly installing a steel frame in a confined space includes two sets of lifting connecting rods 1 and a portal arch 3 arranged above the two sets of lifting connecting rods 1. Two vertical poles 4 are vertically fixedly installed on the top of the lifting connecting rods 1. Fixing members for fixing the portal arch 3 are arranged above the four vertical poles 4. The four vertical poles 4 are fixedly connected by multiple sets of lower cross bars 5. A centering component 2 is arranged between the multiple sets of lower cross bars 5 to center the portal arch 3.

[0035] It is necessary to explain here that: the portal arch frame 3 is 10m wide and 8m high, with an arched top, a vertical wall 5m high and an arch height of 3m;

[0036] The centering assembly 2 includes a fixed plate 21 fixedly connected to a plurality of vertical poles 4. A cylinder 22 is vertically fixedly inserted above the fixed plate 21. The output end of the cylinder 22 is fixedly connected to a lifting plate 23. A pair of centering plates 24 are fixedly provided on both sides of the lifting plate 23. Centering wheels 25 are rotatably provided at the ends of the centering plates 24. The centering wheels 25 are in driving engagement with the side walls of the portal arch 3.

[0037] The extended end of the control cylinder 22 is retracted from half its length to the shortest. During this process, the lifting plate 23 moves upward, and the pair of centering plates 24 on both sides thereof drive the centering wheels 25 to move upward synchronously. The centering wheels 25 come into contact with the two side walls of the portal arch 3, thereby realizing the centering of the position of the portal arch 3, and the installation of the portal arch 3 can be completed accurately and quickly.

[0038] A locking plate 27 is fixedly provided on the bottom side wall of the extended end of the cylinder 22. Steel cables 26 are connected to both sides of the locking plate 27. Limit rollers 28 are provided on both sides of the cylinder 22. A limit shaft 210 is fixedly provided at the center of the limit rollers 28. The limit shaft 210 is rotatably connected to the vertical pole 4 through a bearing. The outer wall of the steel cable 26 passes through the limit rollers 28 and is detachably connected to the bottom side wall of the portal arch 3.

[0039] The extended end of the control cylinder 22 is extended from the shortest to the longest, and the locking plate 27 is moved downward, pulling the two steel ropes 26 to tighten, so that the two sides of the portal arch 3 are brought inward, so that the portal arch 3 is quickly and accurately fitted to the installation position, which helps to reduce deviations during the installation process and ensure that the portal arch 3 can be accurately positioned in both horizontal and vertical directions;

[0040] Two sets of limiting disks 29 are fixedly provided on the outer wall of the middle part of the limiting roller 28, and the steel rope 26 is located between the two sets of limiting disks 29. The two sets of limiting disks 29 serve to limit the steel rope 26.

[0041] It should be noted that the end of the steel cable 26 is tied to the side wall of the portal arch 3 to complete its fixation, and can be loosened after the installation is completed;

[0042] It should be noted that the lifting connecting rod 1 is hollow inside. When working, the fork of the forklift is inserted into the lifting connecting rod 1. The gravity of the device is transmitted to the forklift through the lifting connecting rod 1, and the forklift can realize the functions of moving and lifting.

[0043] The vertical rod 4 constitutes the main body of the device, and the height of the frame of the device can be adjusted according to actual use requirements; the lower crossbar 5, the upper crossbar 6 and the top crossbar 11 connect the vertical rod 4 into one body to ensure the stability and rigidity of the device;

[0044] Example 2: Please refer to Figure 1-Figure 2 and Figure 5-Figure 7 As shown, the conventional method for installing steel frames in confined spaces in the air is to set up an operating platform, lift the components to the operating platform manually or by a hoist, and then install them on the operating platform. This solution is not only inefficient and labor-intensive, but also has great construction difficulties. The following solution can be used to solve the problem.

[0045] In this embodiment, the four vertical rods 4 are further fixedly connected by multiple sets of upper cross bars 6, and multiple sets of connecting rods 7 arranged parallel to each other are fixedly installed between the two upper cross bars 6;

[0046] It should be noted that a connecting rod 7 is provided on the upper crossbar 6 and covered with wooden boards or other boards to form an operating platform for personnel to work on the platform. The device is revolvable and adaptable, and the structure of the lifting device can be adjusted according to the actual load. At the same time, the operating platform can also be used for indoor climbing operations to solve the problem of lifting heavy components in the air for installation in confined spaces.

[0047] See also Figure 1-Figure 2 and Figure 5-Figure 7 As shown, the fixing member includes two top rods 8, which are fixedly connected to the two vertical rods 4 below them, and the top rods 8 are located directly above the lifting connecting rod 1. A support rod 9 is fixedly provided directly above the top rod 8, and a fixing rod 10 is fixedly provided on the top wall of the top rod 8 on both sides of the support rod 9;

[0048] It should be noted that the top rod 8, the support rod 9 and the fixing rod 10 are formed at the top of the lifting device, and the width between the two fixing rods 10 is slightly larger than the width of the portal arch 3. When the portal arch 3 is installed on the lifting device, the fixing member can fix the portal arch 3 to ensure the stability of the subsequent movement and lifting process of the lifting device.

[0049] See also Figure 1-Figure 2 and Figure 5-Figure 7 As shown, the two vertical rods 4 are located on the outer wall below the top rod 8 and are fixedly connected by a top cross bar 11;

[0050] It should be noted that: first assemble the portal arch frame 3 at the top of the arch on the device, then mark the installation position line on the ground, then use a forklift to transport the device and the portal arch frame 3 to the installation position, and finally lift the portal arch frame 3 stably and vertically, and control the installation error on the ground to effectively ensure the installation accuracy of the portal arch frame 3;

[0051] In the present invention, it can be seen from the combination of Example 1 and Example 2 that:

[0052] By pre-welding and fixing the portal arch 3 in the device, and then using a forklift to transfer the welded portal arch 3 to the installation position for installation, and adjusting the center of the portal arch 3 before installation and adjusting the shape of the portal arch 3 inward during installation, the portal arch 3 can be quickly fitted to the installation position. Combined with the pre-welded and centered portal arch 3, the portal arch 3 can be accurately and quickly installed, thereby improving installation efficiency.

[0053] Working principle:

[0054] Step 1: First, assemble and fix the portal arch 3 on the device, and then use a forklift to transport the device to one side of the designated location. At this time, the extended end of the cylinder 22 is at half length, and the two steel cables 26 are in a relaxed state.

[0055] The extended end of the control cylinder 22 is retracted from half its length to the shortest. During this process, the lifting plate 23 moves upward, and the pair of centering plates 24 on both sides thereof drive the centering wheels 25 to move upward synchronously, so that each centering wheel 25 provides a rolling thrust to the bottom of the portal arch 3. When the four centering wheels 25 are all in rolling connection with the inner wall of the portal arch 3, the four centering wheels 25 play a role in adjusting the center of the portal arch 3, which facilitates the subsequent accurate and rapid installation of the portal arch 3.

[0056] Step 2: After completing the centering operation of the portal arch 3, the extended end of the cylinder 22 is controlled to extend from the shortest to the longest. During this process, the locking plate 27 is moved downward to pull the two steel cables 26 to tighten. The two steel cables 26 are used to pull the two sides of the portal arch 3 respectively, so that the two sides of the portal arch 3 are brought inward, which helps to reduce the deviation during the installation process and avoid the portal arch 3 from scratching the inner wall of the installation location, thereby improving the efficiency of the installation of the portal arch 3.

[0057] Step 3: Use a forklift to transport the device to the designated location, and finally lift the portal arch 3 stably and vertically to the installation elevation. After connecting and fixing the steel arch, the installation is completed. This installation method simplifies the entire installation work into four work sections: assembly, transportation, lifting, and connection. While saving labor and ensuring safety and quality, it greatly improves the installation efficiency. In addition, this method only requires connections at both ends of the steel arch for aerial operations, reducing aerial docking work, greatly reducing installation difficulty, and ensuring construction safety.

[0058] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for accurately and quickly installing a steel frame in a confined space, characterized in that: The invention comprises two groups of lifting connecting rods (1) and a portal arch frame (3) arranged above the two groups of lifting connecting rods (1); two vertical rods (4) are vertically fixedly installed on the top of the lifting connecting rods (1); fixing members for fixing the portal arch frame (3) are arranged above the four vertical rods (4); the four vertical rods (4) are fixedly connected by multiple groups of lower cross rods (5); and a centering component (2) centered on the portal arch frame (3) is arranged between the multiple groups of lower cross rods (5); The centering assembly (2) includes a fixed plate (21) fixedly connected to a plurality of vertical poles (4), a cylinder (22) is vertically fixedly inserted on the fixed plate (21), an output end of the cylinder (22) is fixedly connected to a lifting plate (23), a pair of centering plates (24) are fixedly provided on both sides of the lifting plate (23), and a centering wheel (25) is rotatably provided at the end of the centering plate (24), and the centering wheel (25) is in driving cooperation with the side wall of the portal arch (3); A locking plate (27) is fixedly provided on the bottom side wall of the extended end of the cylinder (22), and steel cables (26) are connected to both sides of the locking plate (27). Limit rollers (28) are provided on both sides of the cylinder (22), and the outer wall of the steel cable (26) passes through the limit rollers (28) and is fixedly connected to the bottom side wall of the portal arch (3); A limiting shaft (210) is fixedly provided at the center of the limiting roller (28), and the limiting shaft (210) is rotatably connected to the vertical rod (4) via a bearing; The specific working method of the device for accurately and quickly installing steel frames in confined spaces includes the following steps: Pre-operation processing: first, the portal arch frame (3) is spliced ​​and fixed on the device, and then the device is transported to one side of the installation location by a forklift. At this time, the extended end of the cylinder (22) is at half the length, and the two steel cables (26) are in a relaxed state; Centering adjustment: First, the extended end of the cylinder (22) is controlled to shrink from half its length to the shortest. During this process, the lifting plate (23) moves upward, driving the four centering wheels (25) to rise, so that each centering wheel (25) provides a rolling thrust to the bottom of the portal arch (3). When the four centering wheels (25) are all connected to the inner wall of the portal arch (3) by rolling, the four centering wheels (25) play a role in adjusting the center of the portal arch (3), which facilitates the subsequent accurate and rapid completion of the installation of the portal arch (3); Close installation: After completing the centering operation of the portal arch (3), the extended end of the cylinder (22) is controlled to extend from the shortest to the longest. During this process, the locking plate (27) is moved downward to pull the two steel cables (26) to tighten, and the two sides of the portal arch (3) are pulled respectively by the two steel cables (26) to make the two sides of the portal arch (3) close to each other, so as to prevent the portal arch (3) from scraping against the inner wall of the installation position; Complete the installation: Use a forklift to transport the device to the installation location, and finally lift the portal arch (3) stably and vertically to the installation elevation, and complete the installation after connecting and fixing the portal arch (3).

2. The device for accurately and quickly installing a steel frame in a confined space according to claim 1, characterized in that: Two sets of limiting disks (29) are fixedly arranged on the outer wall of the middle portion of the limiting roller (28), and the steel rope (26) is located between the two sets of limiting disks (29).

3. The device for accurately and quickly installing a steel frame in a confined space according to claim 1, characterized in that: The four vertical poles (4) are also fixedly connected by multiple groups of upper cross bars (6), and multiple groups of connecting rods (7) arranged parallel to each other are fixedly installed between the two upper cross bars (6).

4. The device for accurately and quickly installing a steel frame in a confined space according to claim 1, characterized in that: The fixing member comprises two top rods (8), the top rods (8) are fixedly connected to the two vertical rods (4) below them, and the top rods (8) are located directly above the lifting connecting rod (1), a support rod (9) is fixedly arranged directly above the top rods (8), and fixing rods (10) are fixedly arranged on the top walls of the top rods (8) on both sides of the support rods (9).

5. The device for accurately and quickly installing a steel frame in a confined space according to claim 4, characterized in that: The two vertical rods (4) are located on the outer wall below the top rod (8) and are fixedly connected via a top cross rod (11).

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