Super-large-diameter pin shaft mounting tool and using method

Abstract

The invention discloses a super-large-diameter pin shaft mounting tool which comprises a supporting stand column, a triangular large joint hoisted in the supporting stand column and a pin shaft hoisting mechanism arranged at one end of a pin shaft hole of the triangular large joint. And the pin shaft traction mechanism is arranged at the other end of the triangular large joint pin shaft hole and used for pulling the pin shaft into the pin shaft hole, and the pin shaft is assembled at the hoisting position of the pin shaft hoisting mechanism. The device is simple in structure, easy to install, capable of reducing the installation failure rate, easy to operate by field workers, capable of being operated by the workers without long-time training, capable of effectively guaranteeing the installation precision and capable of finding and correcting deviation in the installation process in time, and therefore the final installation precision is guaranteed, the installation efficiency is improved, and the installation cost is reduced. And workers can complete the installation task at a higher speed and with higher quality, so that the working efficiency of the whole construction team is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure building engineering, in particular to an installation tool for an oversized diameter pin shaft and a use method thereof. Background Art

[0002] Steel structure buildings are buildings that use construction steel to form a load-bearing structure. They are usually made of beams, columns, trusses and other components made of steel and steel plates, and together with enclosure structures such as roofs, floors and walls, they form a complete building. Construction steel usually refers to hot-rolled angle steel, channel steel, I-beam, H-beam and steel pipes, etc. Buildings whose load-bearing structures are composed of these components are called steel structure buildings. Load-bearing structures formed by cold-rolled thin steel plates, curled or non-curled L-shaped, U-shaped, Z-shaped and tubular thin-walled steel, and its components made of small steel materials such as angle steel and steel bars are generally called light steel structure buildings. With the widespread application of steel structure buildings, pin nodes are widely used due to their good bearing capacity and flexibility in shape. Pin nodes realize the connection between components through pins. Their force transmission paths are clear and definite, and they can effectively transfer loads. At the same time, the structure of pin nodes is relatively simple, which reduces the design and construction difficulty of complex nodes and improves construction efficiency.

[0003] A tooling for oversized and heavy workpieces disclosed in a Chinese patent document with announcement number CN212371340U includes a workbench having a work surface for carrying oversized and heavy workpieces, a sling is provided on the workbench, and the sling includes a central axis, the central axis is mounted on the workbench perpendicular to the work surface, and a plurality of cables are mounted on the end of the central axis away from the workbench, and the free ends of the cables are used to pull the oversized and heavy workpieces. The technical problem that the workbench in the prior art cannot directly carry an oversized gear ring, and after adding an expansion tooling, the expansion tooling is susceptible to large forces and plastic deformation and plane distortion occurs, but the tooling for oversized and heavy workpieces focuses on the hoisting of large workpieces, and cannot play a significant auxiliary role in the assembly of large workpieces.

[0004] A heavy-duty pin quick disassembly and assembly tool disclosed in a Chinese patent document with publication number CN204094726U includes a front end plate, a rear end plate, and a rib rod. The front end plate is welded to the rear end plate through a plurality of rib rods to form a hollow squirrel cage structure. The front end plate is provided with bolt holes, and the rib rod is provided with positioning bolts. The rear end plate is provided with a hydraulic jacking device, and the pipe joint of the hydraulic jacking device is connected to a hydraulic pump. The utility model discloses a heavy-duty pin quick disassembly and assembly tool, which adopts a squirrel cage structure with a hydraulic jack and positioning bolts. The tool is installed by using the bolt holes of the stop plate on the pin to realize quick disassembly and assembly of the pin. However, the heavy-duty pin quick disassembly and assembly tool adopts a hydraulic jacking device to push the pin into or out of the predetermined pin hole, which requires a high precision of the force of the hydraulic jacking device. When the force of the hydraulic jacking device is offset, it is easy to increase the friction and affect the disassembly and assembly efficiency.

[0005] Existing oversized diameter pin shafts often face many difficulties during on-site installation due to their heavy weight and high installation precision requirements, such as inaccurate positioning, long installation time, and easy shaft jamming during installation.

[0006] In order to solve the deficiencies in the above-mentioned prior art, it is a problem worth studying to provide an installation tool for an ultra-large diameter pin shaft and a method for using the same. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings of existing oversized diameter pin shafts due to their heavy weight and high installation precision requirements, which often face many difficulties during on-site installation, such as inaccurate positioning, long installation time, and easy shaft jamming during installation, and to provide an oversized diameter pin shaft installation tool and a use method to achieve safe, efficient and precise assembly of oversized diameter pin shafts.

[0008] The purpose of the present invention is achieved through the following technical solutions: an ultra-large diameter pin installation tool and a method of use, comprising a support column, and a triangular large node hoisted in the support column, and also comprising a pin hoisting mechanism arranged at one end of the pin hole of the triangular large node, the pin hoisting mechanism is used to adjust the position of the pin to align with the pin hole; A pin traction mechanism is arranged at the other end of the pin hole of the triangular large node, and the pin traction mechanism is used to pull the pin into the pin hole; The lifting position of the pin lifting mechanism is equipped with a pin.

[0009] The pin shaft lifting mechanism comprises a mounting lug fixed to one side of the triangular large node, a fall chain connected to the mounting lug, and two lifting rings fixedly connected to the ends of the fall chain; The two lifting rings are matched with the pin shaft assembly, and the pin shaft is aligned with the pin shaft hole of the triangular large node under the adjustment of the pin shaft lifting mechanism.

[0010] By setting a pin lifting mechanism on the triangular large node, the pin can be hoisted and aligned with the pin hole of the triangular large node, so that after the triangular large node is concentrically connected with the hanging plug plate, the pin can be directly assembled into the pin hole. The lifting structure can quickly and accurately lift the pin to the predetermined position.

[0011] The lifting rings are each fastened together by two semicircular rings connected by bolts, and the inner diameter of the lifting ring is adapted to the diameter of the pin shaft; The end of the pin shaft is assembled and connected with a pin shaft guide block, which is in the shape of a cylindrical prism and is fixed to the end of the pin shaft by three large hexagonal high-strength bolts. The diameter of the larger end of the pin shaft guide block is adapted to the diameter of the pin shaft.

[0012] The pin is hoisted tightly by the lifting ring to ensure that the pin will not fall during the lifting and insertion process. When the pin is docked with the pin hole, the truncated cone slope of the pin guide block is first docked with the pin hole for alignment.

[0013] The pin shaft traction mechanism comprises a plurality of cushion blocks fixedly connected to the outer side of the end of the pin shaft hole, a traction screw limit plate fixedly connected to the outer side of the cushion block, and a traction screw passing through the traction screw limit plate; One end of the traction screw is screwed into an inner thread opening reserved at the center of the pin shaft, and the other end of the traction screw is threadedly connected with a traction nut, and the inner side surface of the traction nut is fitted with the outer side surface of the traction fixing plate.

[0014] By setting a pin traction mechanism at one end of the pin hole of the triangular large node, when the docking of the workpieces is completed and the concentricity of the pin holes is ensured, the traction mechanism can be installed on the pin at the other end of the pin hole, and the traction screw and the pin are threadedly connected, and the traction nut is threadedly connected at the other end of the traction screw. The traction nut is turned, and the traction nut is kept in a fixed position under the action of the traction screw limit plate. The torsional force of the traction screw is converted into an outward linear force under the action of the thread, and the traction screw is pulled outward, so that the traction screw traction pin gradually enters the pin hole to complete the traction assembly.

[0015] Guide plates are fixedly connected to the two plug plates on the outer sides of the bottom of the triangular large node, and the inner side surfaces of the guide plates are arc surfaces.

[0016] By arranging a guide plate at the plug plate of the triangular large node, when the triangular large node and the hanging column plug plate are assembled and docked, the arc surface of the guide plate can play a role of limiting guidance, making the docking assembly of the triangular large node and the hanging column plug plate smoother and improving the assembly efficiency.

[0017] The top outer sides of the support columns are fixedly connected with jacks, and the output ends of the jacks are fixedly connected with the hoisting equipment of the triangular large node; An operating platform is arranged between the supporting columns and the triangular large node.

[0018] By setting a jack on the top of the supporting column, after completing the docking of the triangular large node plug plate and the hanging column plug plate, the lifting equipment of the triangular large node is slowly put into place to the jack, and the linkage adjustment of the jack can be used to complete the fine adjustment of the elevation and angle of the triangular large node, so that the pin shaft holes of the triangular large node and the hanging column are concentric, which facilitates the insertion of the pin shaft to complete the assembly. The operating platform can facilitate the operator to assist in the adjustment and docking installation of the tooling on the platform.

[0019] The end of the traction screw is sleeved with a traction disc, and the traction disc and the traction screw are perpendicular to each other.

[0020] By arranging a traction plate at the end of the traction screw, when the traction nut is rotated to pull the traction screw and the pin outward, the operator can hold the traction plate to guide the traction screw to be pulled out stably, thereby improving the stability of the pin during traction. When the traction direction deviates, the traction plate can magnify the inclination angle of the traction screw, so that the traction deviation can be discovered earlier and corrected in time, thereby avoiding the traction angle deviation during the pin assembly process affecting the installation effect.

[0021] A method for using an oversized diameter pin installation tool comprises the following steps: Step 1: Install support columns outside the lifted triangle node, and install jacks and operating platforms on the support columns; Step 2: Install guide plates on both sides of the plug plate at the bottom of the triangular large node; Step 3: Fix the pin with a lifting ring, lift the lifting ring and the pin on the installation lug of the triangular large node with a hand chain hoist, and install the pin guide block at the end of the pin; Step 4: Using the deadweight of the structure and guided by the arc surface of the guide plate, assemble the plug plate of the triangular large node with the plug plate of the hanging column, and use the jack to fine-tune the elevation and angle of the triangular large node; Step 5: Install a cushion block and a traction screw limit plate at the other end of the pin hole of the triangular large node, and pass the traction screw through the traction screw limit plate and connect it to the pin threadedly; Step 6: Thread the traction nut and the traction screw, and continuously tighten the traction nut to use the interaction force between the traction nut and the traction screw limit plate to pull the traction screw and the pin outward, thereby pulling the pin to the designed position; Step 7: Remove the installation tools including the support columns, pin lifting mechanism and pin pulling mechanism.

[0022] When hoisting the triangular large node described in step 1, at the ground stage, first check whether the pin shaft hole is smooth and has burrs, and whether the pin shaft guide block is concentric with the pin shaft; And apply butter or other lubricants on the pin, pin guide block, and pin hole to reduce the friction resistance during the traction process.

[0023] After the pin is lifted in step three, the end of the pin is pre-pierced into the pin hole of the triangular large node. The insertion depth of the pin is such that the nut does not protrude from the inner side of the plug plate of the triangular large node.

[0024] The pin hole can support the lifted pin and keep the pin stable during the assembly of the triangular large node.

[0025] Positive and beneficial effects: 1. The extra-large diameter pin installation tooling and usage method utilizes a simple and reasonable mechanical structure to quickly and efficiently complete the installation of the extra-large pin. The tooling has a low manufacturing cost, a simple structure, and is easy to install, which can reduce the installation failure rate. It is easy for on-site workers to operate, and workers do not need to undergo long-term training to get started. The installation accuracy can be effectively guaranteed, and deviations in the installation process can be discovered and corrected in time, thereby ensuring the final installation accuracy and improving installation efficiency. Workers can complete installation tasks at a faster speed and with higher quality, greatly improving the work efficiency of the entire construction team.

[0026] 2. The installation tooling and usage method of the super-large diameter pin shaft, the pin shaft hoisting mechanism, enables the pin shaft to be hoisted and aligned with the pin shaft hole of the triangular large node, so that the pin shaft can be directly assembled into the pin shaft hole after the triangular large node is concentrically connected with the hanging plug plate. The hoisting structure can quickly and accurately hoist the pin shaft to the predetermined position, reducing the time of manual handling and positioning, and improving the efficiency of the entire installation process. The use of the hoisting structure for pin shaft installation can reduce the risk of manual high-altitude operations and improve construction safety. The hoisting structure has stable support and protection measures to ensure the safety of construction personnel.

[0027] 3. The installation tooling and usage method of the super-large diameter pin shaft is to hoist the pin shaft with a lifting ring to ensure that the pin shaft will not fall during the lifting and insertion process. When the pin shaft and the pin shaft hole are docked, the truncated cone inclined surface of the pin shaft guide block is first docked with the pin shaft hole for alignment and cooperation, so that the pin shaft assembly process is smoother, the assembly efficiency is improved, and the pin shaft and the pin shaft hole are prevented from colliding with each other during the assembly process to cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the traction tooling of the present invention; Figure 2 A schematic diagram of the steps of installing a temporary support according to the present invention; Figure 3 It is a schematic diagram of the steps of pre-threading the pin shaft of the present invention; Figure 4 A schematic diagram of the steps of connecting the plug boards of the present invention; Figure 5 It is a schematic diagram of the installation of the pin traction mechanism of the present invention; Figure 6 It is a traction schematic diagram of the pin traction mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the present invention after assembly; Figure 8 It is a three-dimensional schematic diagram of the pin tooling of the present invention.

[0029] In the figure: 1-support column, 2-triangular large node, 3-installation ear, 4-fall chain, 5-lifting ring, 6-pin shaft, 7-pin shaft guide block, 8-pad, 9-traction screw limit plate, 10-traction screw, 11-traction nut, 12-guide plate, 13-jack, 14-operating platform, 15-traction plate. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example 1

[0031] like Figures 1 to 8 As shown, an ultra-large diameter pin installation tool and a method of use, which includes a support column 1, and a triangular large node 2 hoisted in the support column 1, and also includes a pin hoisting mechanism arranged at one end of the pin hole of the triangular large node 2, the pin hoisting mechanism is used to adjust the position of the pin to align with the pin hole; A pin traction mechanism is arranged at the other end of the pin hole of the triangular large node 2, and the pin traction mechanism is used to pull the pin into the pin hole; A pin 6 is mounted at the lifting position of the pin lifting mechanism.

[0032] like Figures 1 to 5 As shown, the pin shaft lifting mechanism includes a mounting lug 3 fixed to one side of the triangular large node 2, a fall chain 4 connected to the mounting lug 3, and two lifting rings 5 ​​fixedly connected to the ends of the fall chain 4; The two lifting rings 5 ​​are assembled and connected with the pin shaft 6, and the pin shaft 6 is aligned with the pin shaft hole of the triangular large node 2 under the adjustment of the pin shaft lifting mechanism.

[0033] By setting a pin hoisting mechanism on the triangular large node 2, the pin can be hoisted and aligned with the pin hole of the triangular large node 2, so that the pin can be directly assembled into the pin hole after the triangular large node is concentrically connected with the hanging plug plate. The hoisting structure can quickly and accurately hoist the pin to the predetermined position, reducing the time of manual handling and positioning, and improving the efficiency of the entire installation process. The use of the hoisting structure for pin installation can reduce the risk of manual high-altitude operations and improve construction safety. The hoisting structure has stable support and protection measures to ensure the safety of construction personnel; Four small hand chain hoists are used to fix the lifting ring 5 and the pin 6 on the mounting lug 3 on the triangular large node. In addition to the fixing function, the hand chain hoist also has the function of adjusting the pin angle.

[0034] like Figures 1 to 5 As shown, the lifting ring 5 is fastened together by two semicircular rings connected by bolts, and the inner diameter of the lifting ring 5 is adapted to the diameter of the pin 6; The end of the pin 6 is assembled and connected with a pin guide block 7, which is in the shape of a cylindrical prism. The pin guide block 7 is fixed to the end of the pin 6 by three large hexagonal high-strength bolts. The diameter of the larger end of the pin guide block 7 is matched with the diameter of the pin 6. The pin 6 is tightened and lifted by the lifting ring 5 to ensure that the pin 6 will not fall during the lifting and insertion process. When the pin 6 is docked with the pin hole, the truncated cone inclined surface of the pin guide block 7 is first docked with the pin hole for alignment and cooperation, so that the pin assembly process is smoother, the assembly efficiency is improved, and the pin and the pin hole are prevented from colliding with each other during assembly to cause damage.

[0035] The pin guide block 7 is fixed to the end of the pin by three M20*80 large hexagonal high-strength bolts. The bolt holes of the pin guide block 7 are drilled by the factory machine, and the hole positions are the same as the pin thread holes. The pin guide block 7 is in the shape of a cylindrical prism with a bottom diameter of 290 and a top diameter of 270.

[0036] like Figure 5 to Figure 6 As shown, the pin traction mechanism includes a plurality of cushion blocks 8 fixedly connected to the outer side of the end of the pin hole, a traction screw limit plate 9 fixedly connected to the outer side of the cushion block 8, and a traction screw 10 passing through the traction screw limit plate 9; One end of the traction screw 10 is screwed into the inner thread hole reserved in the center of the pin shaft 6, and the other end of the traction screw 10 is threadedly connected with a traction nut 11, and the inner side surface of the traction nut 11 fits with the outer side surface of the traction fixing plate 9. By setting a pin shaft traction mechanism at one end of the pin shaft hole of the triangular large node 2, when the docking of the workpiece is completed and the concentricity of the pin shaft hole is ensured, the traction mechanism can be installed on the pin shaft at the other end of the pin shaft hole, and the traction screw 10 and the pin shaft 6 are threadedly connected. The traction nut 11 is threadedly connected at the other end of the traction screw 10, and the traction nut 11 is twisted. Under the action of the traction screw limit plate 9, the traction nut 11 is kept in a fixed position. Then, the torsional force of the traction screw 11 is converted into an outward linear force under the action of the thread, and the traction screw 10 is pulled outward, so that the traction screw 10 pulls the pin shaft 6 to gradually enter the pin shaft hole to complete the traction assembly; The pin traction tooling can use a simple and reasonable mechanical structure to quickly and efficiently complete the installation of super-large pins. The tooling has a low manufacturing cost, a simple structure, and is easy to install, which can reduce the installation failure rate. It is easy for on-site workers to operate, and workers can start operating without long-term training. The installation accuracy can be effectively guaranteed, and deviations in the installation process can be discovered and corrected in time, thereby ensuring the final installation accuracy and improving the installation efficiency. Workers can complete the installation task at a faster speed and higher quality, which greatly improves the work efficiency of the entire construction team. The reserved hole of the traction screw limiting plate 9 passing through the traction screw 10 is 2-5 mm larger than the traction screw 10. During the installation of the traction screw 10, the time should be controlled to avoid the pin shaft hole from being offset again.

[0037] A method for using an oversized diameter pin installation tool comprises the following steps: Step 1: Install the support column 1 outside the lifted triangle node 2, and install the jack 13 and the operating platform 14 on the support column 1; Step 2: Install guide plates 12 on both sides of the plug plate at the bottom of the triangular large node 2; Step 3: Fix the pin 6 with the lifting ring 5, lift the lifting ring 5 and the pin 6 on the mounting lug 3 of the triangle large node 2 with a hand chain hoist, and install the pin guide block 7 at the end of the pin 6; Step 4: Using the deadweight of the structure and guided by the arc surface of the guide plate 12, the plug plate of the triangular large node 2 is docked and assembled with the plug plate of the hanging column, and the elevation and angle of the triangular large node 2 are fine-tuned by the jack 13; Step 5: Install a cushion block 8 and a traction screw limit plate 9 at the other end of the pin shaft hole of the triangular large node 2, and thread the traction screw 10 through the traction screw limit plate 9 and connect it to the pin shaft 6; Step 6: Thread the traction nut 11 and the traction screw 10, and continuously tighten the traction nut 11 to use the interaction force between the traction nut 11 and the traction screw limit plate 9 to pull the traction screw 10 and the pin outward, thereby pulling the pin to the designed position; Step 7: Remove the installation tools including the support columns, pin lifting mechanism and pin pulling mechanism.

[0038] By twisting the traction nut of the traction screw, the pin, pin guide block and traction screw are pulled to one end synchronously. During this period, if the pin hole is offset so that the pin cannot be inserted and the nut cannot be twisted, stop twisting, adjust the concentricity of the pin hole and then twist the nut. Do not twist it forcibly. As the pin is inserted, remove the lifting ring near the node side.

[0039] When hoisting the triangular large node 2 in step 1, at the ground stage, first check whether the pin shaft hole is smooth and has burrs, and whether the pin shaft guide block 7 is concentric with the pin shaft 6; And apply butter or other lubricants on the pin 6, the pin guide block 7, and the pin hole to reduce the friction resistance during the traction process.

[0040] like Figures 4 to 5 As shown, after the pin 6 is lifted in step three, the end of the pin 6 is pre-pierced into the pin hole of the triangular large node 2. The insertion depth of the pin 6 is such that the nut does not protrude from the inner side of the plug plate of the triangular large node 2, so that the pin hole can support the lifted pin 6 and keep the pin 6 stable during the assembly process of the triangular large node 2. Example 2

[0041] like Figure 3 to Figure 4 As shown, guide plates 12 are fixedly connected to the two plug plates at the bottom outer side of the triangular large node 2, and the inner side surface of the guide plate 12 is an arc surface. By arranging the guide plate 12 at the plug plate of the triangular large node 2, when the triangular large node 2 is assembled and docked with the hanging column plug plate, the arc surface of the guide plate 12 can play a role of limiting guidance, so that the docking assembly of the triangular large node 2 and the hanging column plug plate is smoother, and the assembly efficiency is improved; Guide plates 12 are welded at the two plug plates outside the triangular large node. There is one group of guide plates 12 on each side, with three in each group. The thickness of the guide plates is 50 mm, the tail is the same thickness as the ear plate, and the end is 30-50 mm smaller than the tail. Example 3

[0042] like Figure 1 As shown, the top outer side of the support column 1 is fixedly connected with a jack 13, and the output end of the jack 13 is fixedly connected to the lifting equipment of the triangular large node 2; An operating platform 14 is provided between the supporting column 1 and the triangular large node 2. By arranging a jack 13 on the top of the supporting column, after the triangular large node plug plate and the hanging column plug plate are connected, the lifting equipment of the triangular large node 2 is slowly put into place to the jack, and the linkage adjustment of the jack 13 can be used to complete the fine adjustment of the elevation and angle of the triangular large node, so that the pin shaft holes of the triangular large node 2 and the hanging column are concentric, which facilitates the insertion of the pin shaft to complete the assembly. The operating platform 14 can facilitate the operator to assist in the adjustment and docking installation of the tooling on the platform.

[0043] At the top of the temporary support column, reserve 20mm vertically with the lower chord corbel of the triangular large node as a reserved space for subsequent fine-tuning of the pin shaft hole of the large node. Example 4

[0044] like Figure 5 to Figure 6 As shown, a traction disc 15 is sleeved on the end of the traction screw 10, and the traction disc 15 is perpendicular to the traction screw 10. By arranging the traction disc 15 at the end of the traction screw 10, when the traction nut 11 is rotated to pull the traction screw 10 and the pin 6 outward, the operator can hold the traction disc 15 to guide the traction screw 10 to be pulled out stably, thereby improving the stability of the pin during traction, and when the traction direction is offset, the traction disc 15 can magnify the inclination angle of the traction screw 10, so that the traction offset can be discovered earlier and corrected in time, thereby avoiding the traction angle offset during the pin assembly process affecting the installation effect.

Claims

1. A super-large diameter pin shaft installation tool, comprising a support column (1), and a triangular large node (2) hoisted in the support column (1), characterized in that: It also includes a pin shaft lifting mechanism disposed at one end of the pin shaft hole of the triangular large node (2), the pin shaft lifting mechanism being used to adjust the position of the pin shaft to align with the pin shaft hole; a pin shaft pulling mechanism disposed at the other end of the pin shaft hole of the triangular large node (2), the pin shaft pulling mechanism being used to pull the pin shaft into the pin shaft hole; and a pin shaft (6) is mounted at the lifting position of the pin shaft lifting mechanism.

2. The super-large diameter pin installation tool according to claim 1, characterized in that: The pin shaft lifting mechanism comprises a mounting lug (3) fixed to one side of the triangular large node (2), a fall chain (4) connected to the mounting lug (3), and two lifting rings (5) fixedly connected to the ends of the fall chain (4); The two lifting rings (5) are assembled and connected to the pin shaft (6), and the pin shaft (6) is aligned with the pin shaft hole of the triangular large node (2) under the adjustment of the pin shaft lifting mechanism.

3. The super-large diameter pin installation tool according to claim 2, characterized in that: The lifting ring (5) is composed of two semicircular rings fastened together by bolt connection, and the inner diameter of the lifting ring (5) is adapted to the diameter of the pin shaft (6); The end of the pin shaft (6) is assembled and connected with a pin shaft guide block (7), the pin shaft guide block (7) is in the shape of a cylindrical prism, the pin shaft guide block (7) is fixed to the end of the pin shaft (6) by three large hexagonal high-strength bolts, and the diameter of the larger end of the pin shaft guide block (7) is adapted to the diameter of the pin shaft (6).

4. The super-large diameter pin installation tool according to claim 1, characterized in that: The pin shaft traction mechanism comprises a plurality of cushion blocks (8) fixedly connected to the outside of the end of the pin shaft hole, a traction screw limit plate (9) fixedly connected to the outside of the cushion block (8), and a traction screw (10) passing through the traction screw limit plate (9); One end of the traction screw rod (10) is screwed into an inner thread hole reserved at the center of the pin shaft (6), and the other end of the traction screw rod (10) is threadedly connected to a traction nut (11), and the inner side surface of the traction nut (11) is in contact with the outer side surface of the traction fixing plate (9).

5. The super-large diameter pin installation tool according to claim 1, characterized in that: Guide plates (12) are fixedly connected to two plug plates at the outside of the bottom of the triangular large node (2), and the inner side surface of the guide plate (12) is an arc surface.

6. The super-large diameter pin installation tool according to claim 1, characterized in that: The top outer sides of the support columns (1) are fixedly connected to jacks (13), and the output ends of the jacks (13) are fixedly connected to the lifting equipment of the triangular large node (2); An operating platform (14) is provided between the supporting column (1) and the triangular large node (2).

7. The super-large diameter pin installation tool according to claim 4, characterized in that: A traction disc (15) is sleeved on the end of the traction screw rod (10), and the traction disc (15) and the traction screw rod (10) are perpendicular to each other.

8. A method for using a super-large diameter pin installation tool as described in claims 1-7, characterized in that: The following steps are involved: Step 1: Install a support column (1) outside the lifted triangular large node (2), and install a jack (13) and an operating platform (14) on the support column (1); Step 2: Install guide plates (12) on both sides of the plug plate at the bottom of the triangular large node (2); Step 3: Fix the pin (6) with the lifting ring (5), lift the lifting ring (5) and the pin (6) onto the mounting lug (3) of the triangular large node (2) with a hand chain hoist, and install a pin guide block (7) at the end of the pin (6); Step 4: Using the deadweight of the structure and guided by the arc surface of the guide plate (12), the plug plate of the triangular large node (2) and the plug plate of the hanging column are docked and assembled, and the elevation and angle of the triangular large node (2) are fine-tuned by the jack (13); Step 5: Install a cushion block (8) and a traction screw stop plate (9) at the other end of the pin hole of the triangular large node (2), and pass the traction screw stop plate (9) through the traction screw stop plate (9) to be threadedly connected to the pin (6); Step 6: Threading the traction nut (11) and the traction screw (10), and continuously tightening the traction nut (11) to utilize the interaction force between the traction nut (11) and the traction screw limit plate (9) to pull the traction screw (10) and the pin outward, thereby pulling the pin to the designed position; Step 7: Remove the installation tools including the support columns, pin lifting mechanism and pin pulling mechanism.

9. The method for using the super-large diameter pin installation tool according to claim 8, characterized in that: Before hoisting the triangular large node (2) described in step 1, first check on the ground whether the pin shaft hole is smooth and has no burrs, and whether the pin shaft guide block (7) is concentric with the pin shaft (6); Grease or other lubricants are applied to the pin (6), the pin guide block (7) and the pin hole to reduce the friction resistance during the traction process.

10. The method for using the super-large diameter pin installation tool according to claim 8, characterized in that: After the pin (6) is lifted in step 3, the end of the pin (6) is pre-pierced into the pin hole of the triangular large node (2). The insertion depth of the pin (6) is such that the nut does not protrude from the inner side of the plug plate of the triangular large node (2).

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