Installation method of pin shaft connection joint structure

Abstract

The invention relates to a mounting method of a pin shaft connecting joint structure. A lower steel casting is mounted on a mounting frame; the lower steel casting is turned over, and a long rod penetrates through the lower steel casting in the direction perpendicular to the lower steel casting and then is fixed to the mounting frame; discs are installed on the two sides of the bearing, and the bearing is pushed in the long rod direction till being installed in the lower steel casting; the long steel on the mounting frame is dismounted, the two discs outside the bearing are dismounted, and the lower steel casting is turned over to the original position; the upper steel casting is installed on the lower steel casting, and the concentricity of the upper steel casting and the lower steel casting is adjusted; placing the dummy shaft on the mounting rack, adjusting the concentricity of the dummy shaft and the upper and lower steel castings, pulling the dummy shaft to penetrate into the upper and lower steel castings, placing the pin shaft on the mounting rack, adjusting the concentricity of the pin shaft and the upper and lower steel castings, pulling the pin shaft to replace the dummy shaft, and completing the mounting of the pin shaft connecting joint structure. According to the installation method of the pin shaft connecting joint structure, the construction difficulty of large steel casting pin shaft installation is reduced, the construction cost is reduced, and the operation risk is reduced.

Description

Technical Field

[0001] The present application relates to an installation method for a pin-connected node structure, and belongs to the technical field of steel structure pin base assembly. Background Art

[0002] In steel structure engineering, cast steel pin-jointed joint bases are often used to support steel structures such as large stadiums and long-span, heavy-duty bridges. They achieve load transfer and accommodate structural deformation through articulation. These cast steel pin-jointed joint bases consist of a lower and upper steel casting. The lower casting is rotatably connected to a bearing, while the upper casting is mounted with a pin that passes through the bearing. The upper casting rotates on the lower casting.

[0003] Since the pin connection node is a large-sized heavy steel structure and the pin hole has a high dimensional precision, the conventional assembly method is labor-intensive, time-consuming, labor-intensive, and highly dangerous, and cannot meet the needs of large-scale installation.

[0004] In order to reduce the construction difficulty, construction cost and operation risk of the pin installation of large steel castings, this pin base auxiliary installation bracket was designed and produced. It can greatly improve work efficiency, reduce labor intensity and effectively reduce the occurrence of personal injury accidents.

[0005] Therefore, in order to solve the above technical problems, it is necessary to provide an installation method of a pin-connected node structure to overcome the above defects in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to provide a method for installing a pin connection node structure that can reduce the construction difficulty of installing a pin shaft of a large steel casting, reduce construction costs, reduce operational risks, greatly improve work efficiency, reduce labor intensity, and effectively reduce the occurrence of personal injury accidents.

[0007] To achieve the above object, the present invention adopts a technical solution: a method for installing a pin-connected node structure, comprising the following steps: 1) Install the lower steel casting on the mounting frame; 2) Install discs on both sides of the bearing and fix the two discs to each other; 3) Turn over the lower steel casting, pass a long rod through the lower steel casting from a direction perpendicular to the lower steel casting, and then fix the long rod on the mounting frame; 4) Install the center of the disc on the long rod and push the bearing along the long rod until it is installed in the lower steel casting; 5) Remove the long steel on the mounting frame, remove the two discs outside the bearing, and flip the lower steel casting back to its original position; 6) Install the upper steel casting on the lower steel casting and adjust the concentricity of the upper and lower steel castings; 7) Place the dummy shaft on the mounting bracket, adjust the concentricity between the dummy shaft and the upper and lower steel castings, and pull the dummy shaft into the upper and lower steel castings. 8) Place the pin on the mounting bracket, adjust the concentricity of the pin and the upper and lower steel castings, pull the pin to replace the dummy shaft, and complete the installation of the pin connection structure; The mounting frame includes a flipping part for flipping the lower steel casting, a supporting part for supporting the position of the lower steel casting after flipping, an adjusting part 1 for adjusting the position of the upper steel casting, and an adjusting part 2 for adjusting the position of the dummy shaft and the pin shaft.

[0008] By adopting the above technical solution, the construction difficulty of installing the pin shaft of large steel castings is reduced, the construction cost is reduced, and the operation risk is reduced. The installation frame greatly improves work efficiency, reduces labor intensity, and can effectively reduce the occurrence of personal injury accidents.

[0009] The installation method of a pin-connected node structure of the present invention is further configured as follows: in the step 2, the steel column is flipped 90°.

[0010] By adopting the above technical solution, the bearing can be installed in a 90° vertical direction.

[0011] The installation method of a pin-connected node structure of the present invention is further configured as follows: in step three, two screw rods are passed between the two discs, and the screw rods are detachably connected to the discs through a bolt and nut structure.

[0012] The installation method of a pin-connected node structure of the present invention is further configured as follows: in step four, a jack 1 is installed on the top of the long rod, and the output end of the jack 1 faces the lower steel casting.

[0013] By adopting the above technical solution, the jack can push the bearing into the lower steel casting.

[0014] The installation method of a pin-connected node structure of the present invention is further configured as follows: in step five, after removing the fixed disc, a sealing hoop and a connecting ring are installed on the lower casting, and the sealing hoop and the connecting ring are used to limit the bearing position.

[0015] The installation method of a pin connection node structure of the present invention is further configured as follows: in the step eight, after the pin is installed, a gasket and a cover plate are installed on the upper steel casting.

[0016] By adopting the above technical solution, the jack can drive the pin shaft to work together when it is working.

[0017] The installation method of a pin-connected node structure of the present invention is further configured as follows: the flip member includes a rotating rod, one end of the rotating rod is rotatably connected to the mounting frame, and the lower steel casting is fixedly connected to the rotating rod.

[0018] By adopting the above technical solution, the lower steel casting is installed on the rotating rod, and the lower steel casting can be driven to move when the rotating rod rotates.

[0019] The installation method of a pin-connected node structure of the present invention is further configured as follows: the support member includes a U-shaped steel frame, and the lower steel casting is turned 90° and contacts the U-shaped steel frame.

[0020] By adopting the above technical solution, the U-shaped steel frame is used to support the lower steel casting.

[0021] The installation method of a pin connection node structure of the present invention is further configured as follows: an adjusting part includes a U-shaped support plate, the U-shaped support plate is installed on the lower cast steel part, the two U-shaped support plates are located on both sides of the bearing, and the distance between the U-shaped support plate and the lower cast steel part is adjusted by a bolt and nut structure.

[0022] The installation method of a pin-connected node structure of the present invention is further configured as follows: the second adjustment member includes a second U-shaped support plate, and the distance between the second U-shaped support plate and the mounting frame is adjusted by a bolt and nut structure.

[0023] Compared with the prior art, the present invention has the following beneficial effects: The installation method of the pin connection node structure in the present invention reduces the construction difficulty of installing the pin of a large steel casting, reduces construction costs, and reduces operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the pin base of the present invention; Figure 2 This is a schematic diagram of the structure of the mounting frame of the pin connection node structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the structure of the mounting frame of the pin connection node structure of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the structure of the mounting frame of the pin connection node structure of the present invention. Figure 3 ; Figures 5 to 7 This is a schematic diagram of the installation step of turning over the cast workpiece in the installation step of the present invention; Figure 8 Schematic diagram of the installation steps for installing a bearing in the installation steps of the present invention; Figures 9 to 13 This is a schematic diagram of the installation step of turning back the lower cast workpiece in the installation step of the present invention; Figures 14 to 18 It is a schematic diagram of the installation steps of installing the pin shaft in the installation steps of the present invention. DETAILED DESCRIPTION

[0025] Please refer to the instruction manual Figure 1 To the attached Figure 18 As shown, the present invention is a method for installing a pin-connected node structure, comprising a mounting frame, which is constructed by splicing together a plurality of H-shaped steel sections. The mounting frame includes a base 11, and two rotating rods 3 are rotatably connected to the base 11 at one end. The bottom end of the lower steel casting 1 is mounted on the rotating rods 3 via a bolt and nut structure 5. The rotating rods 3 can drive the lower steel casting 1 to rotate 90 degrees. A through slot 9 is defined on the end of the rotating rod 3 away from the rotation axis. A support rod 31 is detachably connected to the base 11. After the rotating rod 3 rotates 90 degrees, the through slot 9 engages with the support rod 31, forming a fixed structure between the support rod 31, the rotating rod 3, and the base 11.

[0026] A support is installed on the base 11, and the support is a U-shaped steel frame 7. The top of the U-shaped steel frame 7 is a flat plate. After the lower steel casting 1 is flipped 90°, one end is placed on the flat plate on the U-shaped steel frame 7. A fine-tuning rubber gasket 8 is placed on the flat plate. The fine-tuning rubber gasket 8 ensures that the lower steel casting 1 is in a horizontal position to facilitate the subsequent installation of the lower steel casting 1 and the bearing 19.

[0027] In this embodiment, the bearing 19 is a spherical bearing, and fixed discs 20 are installed on both sides of the bearing 19. Two screws pass through the two discs 20, and the screws are detachably connected to the discs 20 through a bolt and nut structure. A long rod 21 passes through the axis of the bearing 19, and the long rod 21 is installed on the base 11 through a bolt and nut structure 51. A jack 25 can be installed on the top of the bearing 19, and the output end of the jack 25 faces the lower cast steel part 1. In this embodiment, the jack 25 is a hollow hydraulic jack.

[0028] The mounting frame also includes an adjusting part 1, which includes two U-shaped support plates 27. The U-shaped support plates 27 are installed on both sides of the bottom of the lower steel casting 1. The distance between the U-shaped support plates 27 and the lower steel casting 1 is adjusted by a bolt and nut structure. The upper steel casting 26 can be placed on the top of the U-shaped support plates 27. The U-shaped support plates 27 are used to adjust the position of the upper steel casting 26 to ensure that the upper steel casting 26 is coaxial with the lower steel casting 1.

[0029] An adjustment part 2 is also installed on the mounting frame, and the adjustment part 2 includes a U-shaped support plate 2 30. The distance between the U-shaped support plate 2 30 and the base 11 is adjusted by a bolt and nut structure. The U-shaped support plate 2 30 is used to change the position of the adjustment dummy shaft 28 and the pin shaft 4 to ensure that the upper steel casting 26, the lower steel casting 1, the dummy shaft 28 and the pin shaft 4 are coaxial.

[0030] A second hollow hydraulic jack 29 is provided on the side of the second adjusting part away from the lower steel casting 1. The second hollow hydraulic jack 29 is used to push the dummy shaft 28 and the pin shaft 4 into the upper steel casting 26 and the lower steel casting 1.

[0031] The working principle of the installation method of a pin-connected node structure of the present invention is as follows: First, fix the lower steel casting 1 to the rotating rod 3 with a high-strength bolt 5. Use a hand hoist or an indoor crane to slowly rotate the lower steel casting 1 90° around the hinge of the rotating rod 3 until the edge of the lower steel casting 1 is placed on the U-shaped steel frame 7. Fine-tune the number of layers of rubber gaskets 8 to ensure that the lower steel casting 1 is in the proper position. Fix the support rod 31 between the rotating rod 3 and the base 11 to fix the lower steel casting 1. Inspect the assembly area between the upper steel casting 26 and the bearing 19, apply grease, remove the bearing 19 from the freezer, and wipe the surface dry. Install the discs 20 on either side of the bearing 19 and tighten them with two M12 screws. Insert a long rod 21 through the center of the two discs 20 and secure them with a bolt and nut assembly. Insert the long rod 21 through the lower cast steel column and vertically insert it into the base 11. Secure the long rod 21 to the base 11 with the bolt and nut assembly 51. Install jack 25 on top of the long rod 21 and slowly push the disc 20 in until the bearing 19 is fully seated in the lower steel casting 1. Remove jack 25, the disc 20, and the long rod 21. Install the isolation hoist and the coupling ring that secures the bearing 19 on the lower steel casting 1. Remove the support rod 31 and use a hand chain hoist and an indoor crane to slowly flip the lower steel casting 1 back onto the base 11. Install U-shaped support plates 27 on both sides of the bottom of the lower steel casting 1, place the upper steel casting 26 above the two U-shaped support plates 27, adjust the position of the U-shaped support plate 27 by the bolt and nut structure to ensure the concentricity of the upper steel casting 26 and the lower steel casting 1, install the U-shaped support plate 2 30 and the jack 2 29 on the mounting frame, place the dummy shaft 28 on the U-shaped support plate 2 30, adjust the position of the U-shaped support plate 2 30 by the bolt and nut structure to ensure the concentricity of the dummy shaft 28, the lower steel casting 1 and the upper steel casting 26, start the jack 29, insert the dummy shaft 28 into the bearing 19, take out the pin shaft 4 and place it on the U-shaped support plate 2 30, and slowly push it in with the jack to replace the dummy shaft 28. When the dummy shaft 28 is completely replaced, install the thrust washer and cover plate on the upper steel casting 26, fix the countersunk bolts and check and tighten them to complete the installation of the pin connection node structure.

[0032] The above specific implementation methods are only preferred embodiments of this creation and are not intended to limit this creation. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation should be included in the scope of protection of this creation.

Claims

1. A method for installing a pin-connected node structure, comprising the following steps: 1) Install the lower steel casting on the mounting frame; 2) Install discs on both sides of the bearing and fix the two discs to each other; 3) Turn over the lower steel casting, pass a long rod through the lower steel casting from a direction perpendicular to the lower steel casting, and then fix the long rod on the mounting frame; 4) Install the center of the disc on the long rod and push the bearing along the long rod until it is installed in the lower steel casting; 5) Remove the long steel on the mounting frame, remove the two discs outside the bearing, and flip the lower steel casting back to its original position; 6) Install the upper steel casting on the lower steel casting and adjust the concentricity of the upper and lower steel castings; 7) Place the dummy shaft on the mounting bracket, adjust the concentricity between the dummy shaft and the upper and lower steel castings, and pull the dummy shaft into the upper and lower steel castings; 8) Place the pin on the mounting bracket, adjust the concentricity of the pin and the upper and lower steel castings, pull the pin to replace the dummy shaft, and complete the installation of the pin connection structure; The mounting frame includes a flipping part for flipping the lower steel casting, a supporting part for supporting the position of the lower steel casting after flipping, an adjusting part 1 for adjusting the position of the upper steel casting, and an adjusting part 2 for adjusting the position of the dummy shaft and the pin shaft.

2. The method for installing a pin-connected node structure according to claim 1, wherein: In the second step, the steel column is flipped 90 degrees.

3. The method for installing a pin-connected node structure according to claim 1, wherein: In the step three, two screw rods are passed between the two discs, and the screw rods are detachably connected to the discs via a bolt and nut structure.

4. The method for installing a pin-connected node structure according to claim 1, wherein: In the step 4, a jack 1 is installed on the top of the long rod, and the output end of the jack 1 faces the lower steel casting.

5. The method for installing a pin-connected node structure according to claim 1, wherein: In the step 5, after the fixed disc is removed, a packing hoop and a coupling ring are installed on the lower casting, and the packing hoop and the coupling ring are used to limit the bearing position.

6. The method for installing a pin-connected node structure according to claim 1, wherein: In the step eight, after the pin is installed, a gasket and a cover plate are installed on the upper steel casting.

7. The method for installing a pin-connected node structure according to claim 1, wherein: The turning part comprises a rotating rod, one end of which is rotatably connected to the mounting frame, and the lower steel casting is fixedly connected to the rotating rod.

8. The method for installing a pin-connected node structure according to claim 1, wherein: The supporting parts include a U-shaped steel frame, and when the lower steel casting is turned 90 degrees, it contacts the U-shaped steel frame.

9. The method for installing a pin-connected node structure according to claim 1, wherein: The adjusting part includes a U-shaped support plate, which is installed on the lower steel casting. The two U-shaped support plates are located on both sides of the bearing. The distance between the U-shaped support plate and the lower steel casting is adjusted by a bolt and nut structure.

10. The method for installing a pin-connected node structure according to claim 1, wherein: The second adjusting member comprises a second U-shaped supporting plate, and the distance between the second U-shaped supporting plate and the mounting frame is adjusted by a bolt and nut structure.

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