A sliding positioning device for irregular steel column in confined space

Abstract

A limited space irregular steel column slip positioning device, including a slip rail mechanism, a reverse transport bearing mechanism, a traction reverse chain, a hoisting mechanism and a fixing mechanism; the slip rail mechanism is arranged at the top end of the reverse transport bearing mechanism; the traction reverse chain is connected between the steel column and the fixed reference object, used for pulling the steel column to move along the slip rail mechanism; the hoisting mechanism is arranged above the position where the steel column is to be installed; the fixing mechanism is used for fixing the steel column after positioning. The beneficial effect is that through the coordinated work of the slip rail mechanism, the reverse transport bearing mechanism, the traction reverse chain, the hoisting mechanism and the fixing mechanism, the positioning and installation of the irregular steel column in the limited space can be adapted; through the cooperation of the slip rail mechanism and the traction reverse chain, the directional movement of the steel column in the limited space can be realized, the adjustment time in the traditional hoisting process is reduced, and the complexity and risk of manual operation are reduced.

Description

Technical Field

[0001] The utility model relates to the field of steel structure construction in building engineering, and particularly relates to a sliding positioning device for irregular steel columns in a confined space. Background Art

[0002] In the field of building steel structure installation, the precise docking of steel columns and foundations is not only a key link to ensure the structural stability, but also the basis for ensuring the safety and bearing capacity of the entire building structure. The connection between the steel column and the foundation must undergo precise measurement, welding and reinforcement treatment to avoid structural deformation or insufficient bearing capacity caused by installation errors, thus affecting the long-term use and seismic resistance of the building. In the field of building steel structure installation, especially when installing irregular steel columns in a confined space, the challenges are more complex. Such steel columns usually have irregular shapes and different sizes, and the installation space is narrow, making it difficult for construction workers to carry out precise measurement and operation.

[0003] Comparing with the Chinese patent with the publication number of CN102659017B, it discloses a steel column hoisting system, which is provided with a ferrule. The ferrule is in a "mouth" - shaped structure, and three of its corners are hinged by bolts, and a steel through - rod is inserted on the upper side of the other corner... When the ferrule is closed, it is in a "mouth" - shaped structure to engage with the column top plate of the steel column. The inner contour size of the "mouth" - shaped ferrule is smaller than the outer contour size of the column top plate. The three vertical and horizontal intersection positions of the "mouth" - shaped structure are set as high - strength bolts that are not tightened, and the fourth connection position is set as a steel through - rod that penetrates up and down. When the steel through - rod penetrates, the ferrule closes, and when it is pulled out, the ferrule can be unfolded, so that the inner contour size of the ferrule is larger than the outer contour size of the column top plate to achieve the purpose of separating the ferrule system from the steel column. The ferrule is composed of "Π" - shaped and "T" - shaped steel plates respectively, and a state of three steel plates stacked is formed at the joint.

[0004] In the use of the above - mentioned steel column hoisting system, there are obvious limitations in the installation scenario of irregular steel columns in a confined space: the "mouth" - shaped structure of the ferrule is only applicable to regular steel columns with column top plates. For steel columns with irregular shapes and no unified column top plates, it is difficult to form a stable meshing and fixation, and cannot meet the hoisting force requirements of irregular components. In addition, its hoisting process depends on the overall lifting of the lifting hook of the hoisting machinery. This system can only achieve the vertical lifting of the steel column. In a confined space such as a basement, it is impossible to accurately transfer the steel column from the sliding track to the installation position, and it is difficult to ensure the installation accuracy in a complex confined environment. Therefore, aiming at the special installation requirements of irregular steel columns in a confined space, a sliding positioning device for irregular steel columns in a confined space is needed to solve the above problems. Content of the Utility Model

[0005] The purpose of this invention is to provide a sliding positioning device for irregular steel columns in confined spaces, which can achieve precise positioning and efficient installation of irregular steel columns in confined spaces.

[0006] The purpose of this utility model is achieved as follows:

[0007] This utility model provides a sliding positioning device for irregular steel columns in confined spaces, including a sliding track mechanism, a transport and bearing mechanism, a traction chain hoist, a hoisting mechanism, and a fixing mechanism.

[0008] The sliding track mechanism is located at the top of the transport bearing mechanism and is used to support the steel column and assist its sliding.

[0009] The traction chain hoist is connected between the steel column and the fixed reference object, and is used to traction the steel column to move in a directional manner along the sliding track mechanism;

[0010] The hoisting mechanism is positioned above the steel column to be installed and is used to lift the slid-in steel column and adjust its position; the fixing mechanism is used to fix the steel column after it has been positioned.

[0011] Furthermore, the transport support mechanism includes a transport frame, which is installed at the pile head position of the basement foundation, and a tie structure is provided between the main steel members of the transport frame. The main steel members of the transport frame are H-beams or I-beams, and the tie structure is angle steel or channel steel, which is welded and fixed to the main steel members.

[0012] The sliding track mechanism includes a sliding track beam and a roller trolley. The sliding track beam is fixed to the top of the transport frame, and the roller trolley travels along the length of the sliding track beam. The top of the roller trolley supports the steel column.

[0013] The sliding track beam is made of double-channel steel, and the roller trolley includes a frame and rollers located at the bottom of the frame. The rollers are in rolling contact with the sliding track beam.

[0014] The hoisting mechanism includes a hoisting hole in the floor slab above the location where the steel column is to be installed, a lifting point reinforcement steel beam set above the hoisting hole, a steel wire rope connected to the lifting point reinforcement steel beam, and a hoisting chain hoist connected to the steel wire rope; the steel wire rope passes through the hoisting hole and is connected to the steel column, and the hoisting chain hoist is used to lift the steel column and adjust its height and position;

[0015] The number of lifting chain hoists is two or four; when there are two lifting chain hoists, they are respectively connected to two lifting points at the top of the steel column; when there are four lifting chain hoists, the lifting holes corresponding to the lifting chain hoists are distributed in a rectangular or square shape; the lifting point reinforcing steel beams are fixed to the floor slab with expansion bolts, and anti-slip pads are provided at the connection positions of the wire ropes and the lifting point reinforcing steel beams; the size of the lifting holes is larger than the cross-sectional size of the steel column.

[0016] The fixing mechanism includes a support frame and angle steel braces. The support frame is welded and fixed to the steel column to support it. The angle steel braces are positioned between the higher steel column and surrounding fixed objects, and are welded and fixed to both the steel column and the surrounding fixed objects. The fixing mechanism also includes an adjustment component for correcting the installation elevation and position of the steel column. This adjustment component works in conjunction with a hoisting chain hoist and consists of jacks or shims located at the bottom of the steel column.

[0017] Positive and beneficial effects:

[0018] Through the coordinated operation of the sliding track mechanism, the transport and bearing mechanism, the traction chain hoist, the hoisting mechanism and the fixing mechanism, it can adapt to the situation of positioning and installing irregular steel columns in confined spaces;

[0019] By combining the sliding track mechanism and the traction chain hoist, the steel column can be moved in a directional manner in a confined space, reducing the adjustment time in the traditional hoisting process. The hoisting mechanism can accurately lift the steel column and adjust its position to ensure accurate installation.

[0020] The fixing mechanism ensures that the steel column remains stable after installation, effectively improving installation efficiency and accuracy, reducing the complexity and risk of manual operation, and is particularly suitable for steel structure construction in narrow and complex spaces. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a bottom view showing the relative positions of the transport and support mechanism and the sliding track mechanism in this utility model;

[0023] Figure 3 This is a top view schematic diagram of the hoisting structure in this utility model.

[0024] Figure 4 This is a schematic diagram of the fixing structure in this utility model;

[0025] The diagram shows: 1. Sliding track mechanism; 11. Sliding track beam; 12. Roller trolley; 121. Frame; 122. Roller; 2. Transport bearing mechanism; 21. Transport frame; 211. Main limb steel; 212. Tie structure; 3. Traction chain hoist; 4. Lifting mechanism; 41. Expansion bolt; 42. Lifting point reinforcing steel beam; 43. Steel wire rope; 44. Lifting chain hoist; 5. Fixing mechanism; 51. Support frame; 52. Angle steel diagonal brace; 53. Adjustment component; 6. Steel column. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See Figures 1-4 As shown, the present invention provides a sliding positioning device for irregular steel column in confined space, including a sliding track mechanism 1, a transport and bearing mechanism 2, a traction chain hoist 3, a hoisting mechanism 4, and a fixing mechanism 5;

[0028] The sliding track mechanism 1 is located at the top of the transport bearing mechanism 2. It is used to support the steel column 6 and assist it in sliding. The sliding direction is horizontal. The sliding track mechanism 1 provides a stable sliding track for the steel column, enabling it to move smoothly in the confined space.

[0029] The traction chain hoist 3 is connected between the steel column 6 and the fixed reference object. It is used to pull the steel column 6 to move in a directional manner along the sliding track mechanism 1, so that the steel column 6 moves in a directional and precise manner along the track to the designated position, thereby so that the hoisting mechanism 4 and the steel column 6 are in a corresponding state to facilitate the lifting operation.

[0030] The hoisting mechanism 4 is positioned above the steel column 6 to be installed. After the steel column is slid into place, the hoisting mechanism 4 lifts the steel column 6 and adjusts it to the accurate installation position to ensure precise alignment and achieve position adjustment of the steel column 6.

[0031] The fixing mechanism 5 is used to fix the steel column 6 after it is in place. After the steel column 6 is installed, the fixing mechanism 5 provides strong support to ensure that the steel column is firmly fixed. The whole device works in coordination, which improves the installation efficiency, reduces the impact of space constraints on the positioning of the steel column 6, and ensures the safety and stability during the construction process.

[0032] In specific operation, firstly, the sliding track mechanism 1 is installed on top of the transport bearing mechanism 2, ensuring the stability and levelness of the overall conveying direction. This assists in the smooth sliding of the steel column 6 when supporting it. The transport bearing mechanism 2 is firmly installed on the underground foundation, ensuring its normal support function and allowing the steel column 6 to move stably on the sliding track mechanism 1. The traction chain hoist 3 connects the steel column 6 to a fixed reference object, ensuring the steel column 6 slides smoothly and directionally along the sliding track mechanism 1. The operator controls the direction and speed of the steel column 6 using the traction chain hoist 3, ensuring the steel column 6 moves to the predetermined position. After the steel column 6 reaches the installation position, the hoisting mechanism 4 is activated, pulling the steel column 6 upwards. The hoisting chain hoist 4 is configured as needed to ensure the steel column 6 is evenly stressed and its position is precisely adjusted. Once the steel column 6 is hoisted and precisely adjusted to its position, the fixing mechanism 5 secures the steel column 6, ensuring it remains firmly in place, thus completing the installation.

[0033] Through the collaboration and coordination of the above steps, the device can efficiently and accurately complete the positioning and installation of the steel column 6 in a narrow and irregular space.

[0034] In addition, during the installation of the traction chain hoist 3, the hook of the traction chain hoist 3 can be hooked onto the upper lifting lug at one end of the hanger, the chain disc is connected to the wire rope, and the chain hangs down naturally. The wire rope can also be connected to the traction chain hoist 3 via shackles or other connectors for easy installation and disassembly. For example, in the auxiliary steel pipe pile 6 insertion device, the wire rope is connected to the traction chain hoist 3 via shackles. During the use of the device, the traction chain hoist 3 mainly plays a role in "fine-tuning." For instance, after the steel column 6 has moved to its approximate position via the sliding track mechanism 1, the traction chain hoist 3, in conjunction with the hoisting mechanism 4, provides traction and adjusts the angle and position, while the hoisting mechanism 4 provides support and load-bearing, thereby precisely adjusting the height, angle, or horizontal position of the steel column 6 to ensure accurate installation. Alternatively, it can assist in controlling the moving speed and direction of the steel column 6 during the traction process to ensure smooth placement.

[0035] The transport support mechanism 2 includes a transport frame 21, which is set at the pile head of the basement foundation to ensure that the steel column 6 can be effectively supported in a narrow space. The main limb steel 211 in the transport frame 21 is provided with a tie structure 212.

[0036] The main limb steel sections 211 of the transport frame 21 are made of H-beams or I-beams. These main limb steel sections 211 are the primary load-bearing components of the transport frame 21, acting as its "skeleton supports." They directly bear the weight of the steel components and the frame itself, transferring the load to the basement pile heads. The use of H-beams or I-beams, with their high strength and large moment of inertia, effectively resists vertical pressure and lateral bending moments, ensuring the overall stability of the frame. Furthermore, the number of main limb steel sections 211 is determined by the load-bearing requirements of the frame, typically multiple sections, such as four or six, symmetrically arranged along the sliding path of the steel components 6 on both sides or below, forming a stable support system.

[0037] The tie structure 212 is made of angle steel or channel steel and is welded and fixed to the main limb steel 211. The main limb steel 211 are connected laterally and obliquely through the tie structure 212 to form an overall frame structure, which further enhances the deformation resistance of the jig and makes the transport jig 21 more stable, improving its load-bearing capacity and deformation resistance. This ensures that the steel column 6 will not tilt or deform during sliding, hoisting and positioning, further improving the safety and accuracy of the installation operation.

[0038] The sliding track mechanism 1 includes a sliding track beam 11 and a roller trolley 12, forming the basic structure for the directional movement of the steel column 6 within a confined space. The sliding track beam 11 is fixed to the top of the transport frame 21, providing a running track for the roller trolley 12 while transferring the load of the steel column 6 to the supporting structure below. This ensures the stability of the track and utilizes the supporting role of the transport frame 21, allowing the entire sliding process to proceed along a controllable path. The roller trolley 12 travels along the length of the sliding track beam 11, with its top directly bearing the steel column 6. By replacing sliding friction with rolling friction, the traction force required for the movement of the steel column 6 is significantly reduced, improving construction efficiency and protecting the steel column 6.

[0039] The sliding track beam 11 adopts a double-channel steel structure, which provides sufficient rigidity to resist the weight of the steel column 6 and the lateral forces generated during movement. The symmetrical arrangement of the channel steel forms a smooth rolling contact surface. The webs of the double-channel steel are opposite and the flanges face outward, which not only enhances the torsional resistance of the track, but also provides precise guide grooves for the rollers 122, ensuring that the roller carriage 12 travels in a straight line. The frame 121 of the roller carriage 12 serves as the main load-bearing body, distributing the load of the steel column 6 evenly to the bottom rollers 122. The rolling cooperation between the rollers 122 and the sliding track beam 11 achieves a low-resistance movement. The rollers 122 are made of high-strength alloy steel or quenched carbon steel with a surface hardness of HRC55-60. The rollers 122 are symmetrically arranged and there are multiple of them to withstand greater pressure and reduce wear. Their diameter and width are optimized according to the weight of the steel column 6 and the span of the track to ensure a smooth and reliable rolling process.

[0040] The hoisting mechanism 4 includes a hoisting hole in the floor slab above the steel column 6 to be installed, a wire rope 43 connected to the hoisting point reinforcing steel beam 42, and a hoisting chain hoist 44 connected to the wire rope 43. Above the hoisting hole, a hoisting point reinforcing steel beam 42 is installed, which is fixed to the floor slab by expansion bolts 41, thereby enhancing the load-bearing capacity of the hoisting point and preventing the floor slab from being crushed during hoisting.

[0041] The steel wire rope 43 passes through the hoisting hole and connects to the steel column 6. The hoisting chain hoist 44 is used to lift the steel column 6 and adjust its height and position. After the steel column 6 slides above the installation position, the hoisting chain hoist 44 at the hoisting hole, in conjunction with the steel wire rope 43, gradually lifts the steel column 6 from the roller trolley 12 of the sliding track beam 11, so that the steel column 6 is removed from the track load, creating conditions for the subsequent dismantling of the sliding track beam 11 and the transport frame 21. At this time, the hoisting chain hoist 44 bears part or all of the weight of the steel column 6, realizing the transition from "track load" to "hoisting temporary load".

[0042] After the steel column 6 is lifted, the height, horizontal position, and verticality of the steel column 6 are precisely adjusted by tightening or loosening the hoisting chain hoist 44 to ensure accurate alignment with the steel column foundation, providing precise conditions for final fixing.

[0043] The sliding track beam 11 and the transport frame 21 can only be dismantled after the steel column 6 has been lifted and detached from the sliding track beam 11. This is because the sliding track beam 11 and the transport frame 21 are the load-bearing structures for the steel column 6 during the sliding phase. If they are dismantled before the steel column 6 is lifted, the steel column 6 will lose its support and become unstable or shift. Only after the hoisting chain hoist 44 lifts the steel column 6 off the track and forms a stable temporary suspension state will the sliding track beam 11 and the transport frame 21 no longer bear any force, and only then is dismantling safe and feasible.

[0044] The number of hoisting chain hoists 44 is two or four; when there are two, they are connected to two lifting points on the top of the steel column 6 respectively; when there are four, the corresponding lifting holes are distributed in a rectangular or square pattern.

[0045] The number of lifting chain hoists 44 is two or four. For lighter and smaller steel columns 6, two lifting chain hoists 44 are used as a group. One end of each chain hoist is connected to two lifting points at the top of the steel column 6, and the other end is connected to the lifting point reinforcement steel beam 42 above the lifting hole via a steel wire rope 43. The steel column 6 is raised and lowered synchronously, and the verticality is initially adjusted asynchronously. For large or heavy steel columns 6, four lifting chain hoists 44 are used as a group. Each lifting chain hoist 44 passes through the corresponding lifting hole via a steel wire rope 43, and the four lifting holes are distributed in a rectangular or square shape on the floor slab. The other end of each lifting chain hoist 44 is connected to the lifting point reinforcement steel beam 42. Through multi-directional force control, they jointly bear the weight of the steel column 6 and accurately adjust its elevation, horizontal position and verticality.

[0046] The reinforcing steel beam 42 at the lifting point is fixed to the floor slab with expansion bolts 41. The expansion bolts form a stable load-bearing node, ensuring that the load during lifting is effectively transferred to the floor slab structure. The expansion bolts 41 are arranged along the force direction of the reinforcing steel beam 42 at the lifting point, which not only ensures the load-bearing capacity of a single bolt, but also disperses the load through multiple evenly distributed bolts, avoiding excessive local stress that could damage the floor slab.

[0047] Anti-slip pads are provided at the connection points between the wire rope 43 and the reinforcing steel beam 42 to increase the friction between them and prevent the wire rope 43 from slipping during the lifting process. The anti-slip pads are usually made of materials with a certain degree of elasticity and wear resistance and are placed on the contact surface between the steel beam and the wire rope. This avoids the wire rope 43 from directly contacting the steel beam and causing wear, and can also fit tightly with the two through its own deformation to ensure stable force transmission during lifting and reduce the swaying or positional displacement of the steel column 6 caused by slippage.

[0048] The size of the hoisting hole is larger than the cross-sectional size of the steel column 6, which can reserve enough space for the hoisting operation of the steel column 6. The larger hole diameter can prevent the steel column 6 from colliding with the hole wall during the hoisting and position adjustment process, ensuring that the steel column 6 can smoothly pass through the hoisting hole to complete the transition from the sliding track to the installation position.

[0049] At the same time, the sufficient space also makes it easier for construction workers to adjust the posture of the steel column 6 when necessary, providing operational conditions for precise positioning. Especially when dealing with irregular steel columns 6, this space margin can effectively reduce the difficulty of operation.

[0050] The fixing mechanism 5 includes a support frame 51 and an angle steel brace 52; the support frame 51 is welded and fixed to the steel column 6 to support the steel column 6; the angle steel brace 52 is set between the higher steel column 6 and the surrounding fixed objects, and the angle steel brace 52 is welded and fixed to the steel column 6 and the surrounding fixed objects.

[0051] The fixing mechanism 5 includes a support frame 51 and angle steel bracing 52, forming a double stability system after the steel column 6 is in place. The support frame 51 serves as a basic support structure and is rigidly connected to the bottom of the steel column 6 by welding. This connection method can not only withstand the vertical load of the steel column 6, but also evenly transfer the load to the bearing surface below.

[0052] The support frame 51 is usually made of welded steel sections. Its cross-sectional dimensions and height are determined according to the weight, size and installation position of the steel column 6 to ensure a stable support platform during the fixing of the steel column 6.

[0053] The angle steel brace 52 provides lateral restraint for the taller steel column 6. Through welding connections with the steel column 6 and surrounding fixed objects, it forms a triangular stable structure. This diagonal support effectively resists horizontal forces such as wind loads and accidental impacts during construction, preventing the steel column 6 from tilting or swaying. The specifications of the angle steel brace 52 are typically determined based on the height of the steel column 6 and the potential horizontal loads it may bear. Generally, equilateral angle steel of ∠75×8 or larger is selected. Both ends are connected to the flange of the steel column 6 and the surrounding fixed objects using double-sided fillet welds, with a weld height of not less than 6mm.

[0054] Through the synergistic effect of the support frame 51 and the angle steel brace 52, the fixing mechanism 5 provides reliable spatial stability for the steel column 6, ensuring that it maintains a precise installation position during subsequent construction.

[0055] The fixing mechanism 5 also includes an adjustment component 53 for correcting the installation elevation and position of the steel column 6. The adjustment component 53 is responsible for the precise correction of the installation elevation and position of the steel column 6, forming a coordinated adjustment system with the hoisting chain hoist 44. The adjustment component 53 is a jack or shim set at the bottom of the steel column 6, which achieves fine adjustment of the elevation through mechanical lifting or thickness adjustment. When using a jack as the adjustment component 53, hydraulic or screw jacks are usually selected, with a rated load capacity of not less than 1.5 times the weight of the steel column 6 and a lifting stroke of not less than 50mm, which can achieve an elevation control accuracy of ±0.5mm. During operation, by adjusting multiple jacks synchronously or asynchronously, in conjunction with the vertical lifting force of the hoisting chain hoist 44, the steel column 6 can be precisely aligned in three-dimensional space.

[0056] When shims are used as adjustment components 53, they are typically made of multiple steel plates of varying thicknesses stacked together. Each shim is 5-10mm thick, and the total height is determined based on adjustment requirements. Shim sets should be placed below the stiffening plates of the steel column 6's base plate. Each set should contain no more than three shims, and the contact area between the shims and the foundation surface should be no less than 70%. Fine adjustments to the elevation of the steel column 6 can be achieved by increasing or decreasing the number of shims or replacing them with shims of different thicknesses.

[0057] During construction, the adjustment component 53 and the hoisting chain hoist 44 need to be used together: first, the steel column 6 is initially suspended to near the design elevation by the hoisting chain hoist 44, and then the adjustment component 53 is used for millimeter-level fine adjustments. At the same time, the actual position of the steel column 6 is monitored by a total station or level until the installation accuracy required by the design is met, and the accuracy range can be controlled within ±5mm. This ensures the flexibility of the installation process of the steel column 6 and significantly improves the positioning accuracy, which is especially suitable for the precise installation of irregular steel columns in confined spaces.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sliding positioning device for irregular steel column in a confined space, characterized in that, It includes a sliding track mechanism (1), a transport and carrying mechanism (2), a traction chain hoist (3), a hoisting mechanism (4), and a fixing mechanism (5); The sliding track mechanism (1) is located at the top of the transport bearing mechanism (2) and is used to support the steel column (6) and assist its sliding. The traction chain hoist (3) is connected between the steel column (6) and the fixed reference object, and is used to traction the steel column (6) to move in a direction along the sliding track mechanism (1); The hoisting mechanism (4) is located above the steel column (6) to be installed, and is used to lift the steel column (6) that has been slid into place and adjust its position; The fixing mechanism (5) is used to fix the steel column (6) after it is in place.

2. The confined space irregular steel column sliding positioning device according to claim 1, characterized in that, The transport carrying mechanism (2) includes a transport frame (21), which is located at the pile head of the basement foundation, and the main limb steel (211) in the transport frame (21) is provided with a tie structure (212).

3. The confined space irregular steel column sliding positioning device according to claim 2, characterized in that, The main limb steel (211) of the transport frame (21) is made of H-beam or I-beam, and the tie structure (212) is made of angle steel or channel steel. The tie structure (212) is welded and fixed to the main limb steel (211).

4. The confined space irregular steel column sliding positioning device according to claim 1, characterized in that, The sliding track mechanism (1) includes a sliding track beam (11) and a roller trolley (12). The sliding track beam (11) is fixed to the top of the transport frame (21). The roller trolley (12) travels along the length of the sliding track beam (11). The top of the roller trolley (12) carries the steel column (6).

5. The confined space irregular steel column sliding positioning device according to claim 4, characterized in that, The sliding track beam (11) is made of double channel steel, and the roller trolley (12) includes a frame (121) and rollers (122) located at the bottom of the frame (121). The rollers (122) roll in cooperation with the sliding track beam (11).

6. The confined space irregular steel column sliding positioning device according to claim 1, characterized in that, The hoisting mechanism (4) includes a hoisting hole opened in the floor above the position of the steel column (6) to be installed, a hoisting point reinforcing steel beam (42) set above the hoisting hole, a steel wire rope (43) connected to the hoisting point reinforcing steel beam (42), and a hoisting chain hoist (44) connected to the steel wire rope (43). The wire rope (43) passes through the hoisting hole and is connected to the steel column (6). The hoisting chain hoist (44) is used to lift the steel column (6) and adjust its height and position.

7. The confined space irregular steel column sliding positioning device according to claim 6, characterized in that, The number of lifting chain hoists (44) is two or four; The two are connected to the two lifting points on the top of the steel column (6), and the four are connected to the lifting holes in a rectangular or square pattern.

8. The confined space irregular steel column sliding positioning device according to claim 6, characterized in that, The lifting point reinforcement steel beam (42) is fixed to the floor slab by expansion bolts (41). The connection position of the steel wire rope (43) and the lifting point reinforcement steel beam (42) is provided with anti-slip pads. The size of the lifting hole is larger than the cross-sectional size of the steel column (6).

9. The confined space irregular steel column sliding positioning device according to claim 1, characterized in that, The fixing mechanism (5) includes a support frame (51) and angle steel bracing (52); The support frame (51) is welded and fixed to the steel column (6) to support the steel column (6). The angle steel brace (52) is set between the higher steel column (6) and the surrounding fixed objects. The angle steel brace (52) is welded and fixed to the steel column (6) and the surrounding fixed objects.

10. The confined space irregular steel column sliding positioning device according to claim 1, characterized in that, The fixing mechanism (5) also includes an adjustment component (53) for correcting the installation elevation and position of the steel column (6). The adjustment component (53) is used in conjunction with the hoisting chain hoist (44). The adjustment component (53) is a jack or shim set at the bottom of the steel column (6).

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