Device for accurately and rapidly installing steel frame in limited space

Abstract

The invention discloses a device for accurately and quickly mounting a steel frame in a limited space, and relates to the technical field of steel arch mounting, in particular to a device for accurately and quickly mounting a steel frame in a limited space, comprising two groups of lifting connecting rods and a gate-type arch arranged above the two groups of lifting connecting rods, fixing pieces for fixing the door-type arch frame are arranged above the four vertical rods, and the four vertical rods are fixedly connected through a plurality of groups of lower cross rods; the portal arch is welded and fixed in the device in advance, then the welded portal arch is transferred to a preset position for installation through cooperation of a forklift, the portal arch is subjected to centering adjustment before installation, and the two sides of the portal arch are controlled to get close inwards during installation; the door-type lagging jack is accurately and rapidly connected with the installation position, the door-type lagging jack which is welded in advance and is centrally processed is combined, accurate and rapid installation of the door-type lagging jack is jointly achieved, and the installation efficiency is improved.

Description

Technical Field

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

[0002] The conventional method for installing a steel frame in the air in a restricted space is to set up an operating platform, lift the components to the operating platform manually or by a hoist, and install and weld-fix the steel frame on the operating platform.

[0003] When renovating a building monomer, when installing a portal steel arch frame indoors, since the building is an existing building, the portal steel arch frame is a newly added installation and fits with the arch top, the construction space is restricted, and in addition, the installation height is relatively high and the portal arch frame is heavy. Using the above method for installation has problems such as low efficiency, labor-consuming, and great construction difficulty, and 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 through the cooperation of a lifting device and a forklift; Moreover, during the actual installation of the portal steel arch frame and the wall of the existing building, the side wall or the top of the portal steel arch frame is prone to rubbing against the wall of the existing building, and it is impossible to finely adjust the shape of the side wall of the portal steel arch frame to quickly fit the installation position, reduce rubbing, and accurately install. Therefore, a solution is provided herein. Summary of the Invention

[0004] 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 restricted space.

[0005] To achieve the above object, the present invention provides the following technical solution: A device for accurately and quickly installing a steel frame in a restricted space, including two groups of lifting connecting rods and a portal arch frame arranged above the two groups of lifting connecting rods. Two vertical rods are vertically and fixedly installed at the top of the lifting connecting rods. Above the four vertical rods, there is a fixing member for fixing the portal arch frame. The four vertical rods are fixedly connected by multiple groups of lower cross bars. Between the multiple groups of lower cross bars, there is a centering component for centering the portal arch frame; The centering component includes a fixing plate fixedly connected to multiple vertical rods. A cylinder is vertically and fixedly inserted on the fixing plate. The output end of the cylinder is fixedly connected to a lifting plate. A pair of centering plates are fixedly arranged on both sides of the lifting plate. A centering wheel is rotatably arranged at the end of the centering plate. The centering wheel is in transmission cooperation with the side wall of the portal arch frame; A locking plate is fixedly arranged on the bottom side wall of the extending end of the cylinder. Steel cable ropes are connected to both sides of the locking plate. Limiting rollers are arranged on both sides of the cylinder. The outer wall of the steel cable rope passes through the limiting roller and is detachably connected to the bottom side wall of the portal arch frame.

[0006] Further, a limiting shaft is fixedly arranged at the center of the limiting roller, and the limiting shaft is rotatably connected to the vertical rod through a bearing.

[0007] Further, two groups of limiting discs are fixedly arranged on the outer wall of the middle part of the limiting roller, and the steel cable is located between the two groups of limiting discs.

[0008] Further, the four vertical rods are also fixedly connected by multiple upper cross bars, and multiple connecting rods arranged in parallel are fixedly installed between the two upper cross bars at the uppermost part.

[0009] Further, the fixing member includes two top rods, the top rods are fixedly connected to the two vertical rods below them, and the top rods are located directly above the lifting connecting rod. A support rod is fixedly arranged directly above the top rods, and fixing rods are fixedly arranged on the top walls of both sides of the top rods where the top rods are located.

[0010] Further, the outer walls of the two vertical rods below the top rods are also fixedly connected by a top cross bar.

[0011] Among them, the device for accurately and quickly installing a steel frame in a restricted space specifically includes the following working methods: Pre - operation processing: First, splice and fix the portal arch frame on this device, and then use a forklift to transport this device to one side of the installation position. At this time, the extending end of the cylinder is at half of its length, and both steel cables are in a slack state; Centering adjustment: First, control the extending end of the cylinder to contract from half of 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 frame respectively. When all four centering wheels are in rolling connection with the inner wall of the portal arch frame, at this time, the four centering wheels play a role in adjusting the centering of the portal arch frame, facilitating the subsequent accurate and rapid installation of the portal arch frame; Closure and installation: After completing the centering operation of the portal arch frame, then control the extending end of the cylinder to extend from the shortest to the longest. During this process, the locking plate moves downward, pulling the two steel cables taut, and the two steel cables respectively pull the two sides of the portal arch frame, making the two sides of the portal arch frame move closer inward, avoiding scratching between the portal arch frame and the inner wall of the installation position, thereby improving the installation efficiency of the portal arch frame; Completion of installation: Then use a forklift to transport this device to the installation position, and finally lift the portal arch frame stably and vertically to the installation elevation, and complete the installation after connecting and fixing the portal arch frame.

[0012] The technical effects and advantages of the present invention: 1. In the present invention, by controlling the extended end of the cylinder to contract from half of its length to the shortest, 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. When all four centering wheels are in rolling connection with the inner wall of the portal arch, the four centering wheels play a role in adjusting the centering of the portal arch, facilitating the subsequent accurate and rapid installation of the portal arch.

[0013] 2. In the present invention, by controlling the extended end of the cylinder to extend from the shortest to the longest, the locking plate moves downward, pulling two steel cable ropes taut, and pulling both sides of the portal arch through the two steel cable ropes respectively, so that both sides of the portal arch move closer inward, which helps to reduce the deviation during the installation process and avoid scraping between the portal arch and the inner wall of the installation position, thereby improving the installation efficiency of the portal arch.

[0014] 3. In the present invention, the device can be paired with a forklift to perform tasks such as transporting and lifting the portal arch, effectively solving the problem of difficult conventional hoisting operations in limited spaces. At the same time, the device has a simple structure, can be adjusted according to the actual situation, is flexible and easy to use, and can also be used as a construction operation platform, a scissor lift, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional external view of the overall structure in the present invention.

[0016] Figure 2 It is a three-dimensional view of the connection relationship between the centering component and the vertical rod in the present invention.

[0017] Figure 3 It is a three-dimensional external view of the centering component in the present invention.

[0018] Figure 4 It is a three-dimensional view of the limiting roller and the limiting disc in the present invention.

[0019] Figure 5 It is a three-dimensional view of the vertical rod, the upper cross bar and the connecting rod in the present invention.

[0020] Figure 6 It is a three-dimensional view of the connection relationship between the top cross bar and the vertical rod in the present invention.

[0021] Figure 7 It is a front view of the overall structure in the present invention.

[0022] Reference numerals are: 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, support rod; 10, fixed rod; 11, top cross bar. 2. Centering component; 21. Fixed plate; 22. Cylinder; 23. Lifting plate; 24. Centering plate; 25. Centering wheel; 26. Steel cable; 27. Locking plate; 28. Limiting roller; 29. Limiting disc; 210. Limiting shaft. Detailed implementation mode

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1: Please refer to Figures 1-7 As shown, for the problem that the shape of the portal arch 3 cannot be controlled in the prior art to make the portal arch 3 accurately and quickly fit the installation position, the following solutions can be adopted; A device for accurately and quickly installing a steel frame in a restricted space in this embodiment includes two groups of lifting connecting rods 1 and a portal arch 3 arranged above the two groups of lifting connecting rods 1. Two vertical rods 4 are vertically and fixedly installed at the top of the lifting connecting rods 1. A fixing member for fixing the portal arch 3 is arranged above the four vertical rods 4. The four vertical rods 4 are fixedly connected by multiple groups of lower cross bars 5. A centering component 2 for centering the portal arch 3 is arranged between the multiple groups of lower cross bars 5; It should be explained here that: the portal arch 3 is 10 m wide, 8 m high, with an arched top, a vertical wall height of 5 m, and an arch height of 3 m; The centering component 2 includes a fixed plate 21 fixedly connected to multiple vertical rods 4. A cylinder 22 is vertically and 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 arranged on both sides of the lifting plate 23. A centering wheel 25 is rotatably arranged at the end of the centering plate 24. The centering wheel 25 is in transmission cooperation with the side wall of the portal arch 3; Then control the extension end of the cylinder 22 to contract from half of its length to the shortest. During this process, the lifting plate 23 moves upward, and a pair of centering plates 24 on both sides thereof drive the centering wheel 25 to move upward synchronously. The centering wheel 25 abuts against the two side walls of the portal arch 3, realizing the centering of the position of the portal arch 3, and the installation of the portal arch 3 can be accurately and quickly completed; A locking plate 27 is fixedly arranged on the bottom side wall of the extension end of the cylinder 22. Steel cables 26 are connected to both sides of the locking plate 27. Limiting rollers 28 are arranged on both sides of the cylinder 22. A limiting shaft 210 is fixedly arranged at the center of the limiting roller 28. The limiting shaft 210 is rotatably connected to the vertical rod 4 through a bearing. The outer wall of the steel cable 26 passes through the limiting roller 28 and is detachably connected to the bottom side wall of the portal arch 3; The extended end of the control cylinder 22 is extended from the shortest to the longest, and the locking plate 27 is moved downward to pull the two steel cables 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 the deviation during the installation process and ensure that the portal arch 3 can be accurately in place in the horizontal and vertical directions; Two sets of limiting plates 29 are fixedly arranged on the outer wall of the middle part of the limiting roller 28, and the steel cable 26 is located between the two sets of limiting plates 29, and the two sets of limiting plates 29 serve the purpose of limiting the steel cable 26; 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 the fixation, and it can be loosened after the installation is completed; 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. 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; Example 2: Please refer to Figures 1-2 and Figures 5-7 As shown, the conventional method for installing steel frames in the air in a confined space in the prior art 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; The four uprights 4 in this embodiment 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 at the top; It should be noted that: a connecting rod 7 is arranged on the upper crossbar 6, and wooden boards or other boards are laid on it to form an operating platform, which can be used for construction by personnel on the platform. The device is turnable and has strong adaptability. The structure of the lifting device can be adjusted according to the actual load. At the same time, the operating platform can be used for indoor climbing operations to solve the problem of lifting heavier components in the air for installation in a confined space. See also Figures 1-2 and Figures 5-7 As shown, the fixing member includes 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, and 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; It should be supplemented here that: The components composed of the ejector rod 8, the support rod 9, and the fixed rod 10 are at the top of the lifting device, and the width between the two fixed 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 piece can fix the portal arch 3 to ensure the stability during the subsequent movement and lifting of the lifting device; Please refer to Figures 1-2 With Figures 5-7 As shown, two vertical rods 4 are also fixedly connected by a top cross bar 11 on the outer wall below the ejector rod 8; It should be supplemented here that: First, assemble the portal arch 3 at the arch top part on this device, then draw the installation position line marks on the ground, and then use a forklift to transport this device and the portal arch 3 to the installation position. Finally, lift the portal arch 3 stably and vertically to control the installation error on the ground, effectively ensuring the installation accuracy of the portal arch 3; In the present invention, combining Embodiment 1 and Embodiment 2, it can be known that: By first performing the pre-welding and fixing treatment on the portal arch 3 in this device, and then with the cooperation of a forklift, transferring the welded portal arch 3 to the installation position for installation, and centering the portal arch 3 before installation and adjusting the shape of the portal arch 3 to move inward during installation, making the portal arch 3 fit the installation position faster. Combining the pre-welded and centered portal arch 3, jointly realizing the precise and rapid installation of the portal arch 3 and improving the installation efficiency; Working principle: Step 1: First, splice and fix the portal arch 3 on this device, and then use a forklift to transport this device to one side of the designated position. At this time, the extending end of the cylinder 22 is at half of its length, and both steel cable ropes 26 are in a slack state; Control the extending end of the cylinder 22 to contract from half of its length to the shortest. During this process, the lifting plate 23 moves upward, and a pair of centering plates 24 on both sides of it 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 respectively. When all four centering wheels 25 are in rolling connection with the inner wall of the portal arch 3, at this time, the centering of the portal arch 3 is adjusted by the four centering wheels 25, facilitating the subsequent precise and rapid completion of the installation of the portal arch 3; Step 2: After completing the centering operation of the portal arch 3, then control the extending end of the cylinder 22 to extend from the shortest to the longest. During this process, the locking plate 27 moves downward, pulling the two steel cable ropes 26 taut. By pulling the two sides of the portal arch 3 respectively through the two steel cable ropes 26, the two sides of the portal arch 3 are made to move inward, which helps to reduce the deviation during installation and avoid the inner wall of the portal arch 3 from rubbing against the installation position, thereby improving the installation efficiency of the portal arch 3; Step 3: Then use a forklift to transport this device to the designated position. Finally, vertically lift the portal arch 3 stably to the installation elevation, and complete the installation after connecting and fixing the steel arch. This installation method simplifies the entire installation work into four operation segments: assembly, transportation, lifting, and connection. While saving labor and ensuring safety and quality, it greatly improves the installation efficiency. Moreover, this method makes the aerial operation only involve the connection at both ends of the steel arch, reducing the aerial docking work, greatly lowering the installation difficulty, and ensuring construction safety.

[0025] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A device for accurately and quickly installing a steel frame in a restricted space, characterized in that, It includes two groups of lifting connecting rods (1) and a portal arch (3) arranged above the two groups of lifting connecting rods (1). Two vertical rods (4) are fixedly installed at the top of the lifting connecting rod (1). Above the four vertical rods (4), there is a fixing member for fixing the portal arch (3). The four vertical rods (4) are fixedly connected by multiple groups of lower cross bars (5). Between the multiple groups of lower cross bars (5), there is a centering component (2) for centering the portal arch (3). The centering component (2) includes a fixing plate (21) fixedly connected to multiple vertical rods (4). A cylinder (22) is vertically and fixedly inserted on the fixing 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 arranged on both sides of the lifting plate (23). A centering wheel (25) is rotatably arranged at the end of the centering plate (24). The centering wheel (25) is in driving cooperation with the side wall of the portal arch (3). A locking plate (27) is fixedly arranged on the bottom side wall of the extending end of the cylinder (22). Steel cable ropes (26) are connected to both sides of the locking plate (27). Limiting rollers (28) are arranged on both sides of the cylinder (22). The outer wall of the steel cable rope (26) passes through the limiting roller (28) and is detachably connected to the bottom side wall of the portal arch (3).

2. The device for precisely and quickly installing a steel frame in a restricted space according to claim 1, wherein: A limiting shaft (210) is fixedly arranged at the center of the limiting roller (28). The limiting shaft (210) is rotatably connected to the vertical rod (4) through a bearing.

3. The device for accurately and quickly installing a steel frame in a restricted space according to claim 2, wherein: Two groups of limiting discs (29) are fixedly arranged on the outer wall of the middle part of the limiting roller (28), and the steel cable rope (26) is located between the two groups of limiting discs (29).

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

5. The device for precisely and quickly installing a steel frame in a confined space according to claim 1, wherein: The fixing member includes 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). Fixing rods (10) are fixedly arranged on the top walls of the top rods (8) on both sides of the support rod (9).

6. The device for precisely and quickly installing a steel frame in a restricted space according to claim 5, wherein: The outer walls of the two vertical rods (4) below the top rods (8) are also fixedly connected by a top cross bar (11).

7. A device for accurately and quickly installing a steel frame in a restricted space according to any one of claims 1-6, characterized in that, The device for accurately and quickly installing a steel frame in a restricted space has the following specific working method steps: Pre - operation processing: First, splice and fix the portal arch (3) on this device, and then use a forklift to transport this device to one side of the installation position. At this time, the extending end of the cylinder (22) is at half of its length, and both steel cable ropes (26) are in a slack state. Centering adjustment: First, control the extension end of the cylinder (22) to contract from half of 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 gantry arch (3). When the four centering wheels (25) are all in rolling connection with the inner wall of the gantry arch (3), at this time, the four centering wheels (25) play a role in adjusting the centering of the gantry arch (3), which is convenient for accurately and quickly completing the installation of the gantry arch (3) subsequently; Approaching and installing: After completing the centering operation of the gantry arch (3), then control the extension end of the cylinder (22) to extend from the shortest to the longest. During this process, the locking plate (27) moves downward, pulling the two steel cable ropes (26) taut, and pulling the two sides of the gantry arch (3) respectively through the two steel cable ropes (26), so that the two sides of the gantry arch (3) approach inward, avoiding scraping between the gantry arch (3) and the inner wall of the installation position; Completing the installation: Then use a forklift to transport this device to the installation position, and finally lift the gantry arch (3) stably and vertically to the installation elevation, and complete the installation after connecting and fixing the gantry arch (3).

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