Auxiliary device for mounting large-scale equipment base and use method of auxiliary device

Through the combination of base, sliding seat, guide mechanism and drive mechanism, automatic guidance and joint joints of large equipment bases are realized, which solves the problems of low efficiency and safety hazards during lifting, and improves the safety and efficiency of base installation.

CN120229344APending Publication Date: 2025-07-01JIANGSU NEW HANTONG SHIP HEAVY IND
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Patent Information

Application Number
CN202510264286.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2025-07-01

AI Technical Summary

Technical Problem

During the ship construction process, the lifting and splicing of large equipment bases has problems such as low efficiency, labor-intensive manual traction and safety hazards.

Method used

The combination of base, sliding seat, guide mechanism and driving mechanism is adopted to achieve automatic guidance during the drop of the base through the combination of guide mechanism and sliding seat, and the guiding angle is automatically adjusted through the driving mechanism to reduce manual traction operations.

Benefits of technology

It improves the safety and efficiency of base installation, reduces manual traction operations, ensures accurate and slits of the base, and improves the overall installation efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of ship construction, in particular to an auxiliary device for mounting a large equipment base and a using method of the auxiliary device. By arranging a base, a sliding seat, a guiding mechanism and a driving mechanism, firstly, auxiliary guiding can be carried out in the falling process of the base through cooperative use of the guiding mechanism and the sliding seat; it is ensured that the base finally falls to the position above the stand column, manual traction operation is reduced through the operation, safety is improved, the driving mechanism can automatically adjust the guiding angle of the guiding mechanism in the moving process of the sliding base and the guiding mechanism, and the guiding angle is determined according to the falling position of the base and the initial set position of the guiding mechanism. According to the technical scheme, automatic guiding can be achieved only by presetting the positions of the guiding mechanism and the tail end of the sliding base, lateral supporting force is provided for base seam alignment, seam alignment efficiency is greatly improved, and the overall efficiency of base installation is improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and more specifically, to an auxiliary device for installing a large equipment base and a using method thereof. Background Technique

[0002] During the shipbuilding process, due to installation position limitations or considerations of reducing the overall weight of the ship, the bases of many large equipment cannot be made into an integral combined base, but need to be divided into two or more split bases. For example, the bases of equipment such as ship generator sets and gas compressors are generally designed as split types.

[0003] During the construction process, these bases are hoisted, spliced, and welded one by one by a gantry crane. However, during the hoisting process, there will be on-site command personnel to direct the hoisting operators to perform precise hoisting, but the efficiency is still not high. In order to facilitate splicing and reduce shaking, manual pulling of the hoisted large base is carried out through an external towing rope, and the purpose is also for guiding and faster splicing.

[0004] However, the large base is heavy, manual traction is laborious, and the pulling force will also affect the splicing accuracy, and there are also safety hazards.

[0005] Therefore, we disclose an auxiliary device for installing a large equipment base and a using method thereof, which can effectively reduce the shaking during the hoisting of the base, reduce the manual traction operation, and can quickly splice and align the seams. Summary of the Invention

[0006] The purpose of the present invention is to provide an auxiliary device for installing a large equipment base and a using method thereof to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the present invention provides the following technical solution: An auxiliary device for installing a large equipment base, including a base provided on the outer side of a column. A cavity with one end open is provided inside the base, and a sliding seat is slidably connected inside the cavity; When in use, the end of the sliding seat away from the cavity is located in the gap between two columns. A guiding mechanism with an adjustable support angle is also provided on the sliding seat, and the guiding mechanism guides during the process of the base falling onto the column; Driving mechanisms are provided on both sides of the base. The guiding mechanism is connected to the driving mechanisms. The driving mechanisms retract the end of the sliding seat away from the cavity into the cavity during the process of the base falling, and make the guiding mechanism perpendicular to the ground.

[0008] A further technical solution of the present application: The guiding mechanism includes a rotating groove opened at one end of the sliding seat away from the cavity, a guiding plate rotatably connected in the rotating groove, and a connecting shaft provided at one end of the guiding plate away from the rotating groove. One end of a supporting plate is rotatably connected to the connecting shaft, and the other end of the supporting plate is connected to the driving mechanism through a connecting rod.

[0009] A further technical solution of the present application: Sliding grooves are opened on both sides inside the cavity, and both sides of the sliding seat are slidably connected in the sliding grooves; The driving mechanism includes driving grooves opened on both sides of the base and driving teeth installed at the central axis inside the driving grooves. A through communication port is opened between the sliding grooves and the driving grooves. Extension blocks are also provided on both sides of the sliding seat, and a second rack is installed on the side surface of the extension block. The second rack is meshed and connected with the driving teeth; A limiting groove is further opened on the side surface of the driving groove away from the communication port inside. A limiting block is slidably connected in the limiting groove in a matching manner. One side of the outer side surface of the limiting block is connected to one side of a moving block, and the other side of the connecting block is connected to a first rack meshed and connected with the driving teeth. A supporting block is provided on the connecting block, and the guiding mechanism is connected between the two supporting blocks.

[0010] A further technical solution of the present application: A stabilizing groove is further opened below the inside of the sliding groove. One end of a stabilizing block is slidably connected in the stabilizing groove, and the other end of the stabilizing block is connected below the extension block.

[0011] A further technical solution of the present application: The number of driving teeth is several.

[0012] A further technical solution of the present application: A pushing groove is further opened at one end of the base away from the opening of the cavity. A push plate is inserted in the pushing groove, and one end of the push plate extends into the cavity and is connected to the side surface of the sliding seat.

[0013] A further technical solution of the present application: The length of the stabilizing groove is the same as the length of the communication port.

[0014] The usage method of the auxiliary device for installing the base of large equipment, the usage method includes the following steps: Step 1: Determine the positions of the two relatively horizontal columns on the outermost side, level the base with the two columns. After determining the horizontal position, fix the base. After fixing the base, adjust the position of the sliding seat. Push the end of the sliding seat away from the cavity between the two columns to ensure that during the falling process of the base, it can contact the outer side surface of the guiding mechanism; Step 2: During the outward movement of the sliding seat, the driving mechanism will drive the guiding mechanism to move. At this time, the included angle between the guiding mechanism and the sliding seat on the left side should be less than 90 degrees. Then, lift the base by an external hoisting device, align it with the column, and then let it fall; Step 3: During the gradual downward movement of the base, it contacts the outer side surface of the guiding mechanism, squeezing the guiding mechanism and the sliding seat into the base. During the squeezing process, the driving mechanism squeezes the guiding mechanism towards the base until the left included angle between the guiding mechanism and the sliding seat is 90 degrees. During this process, the outer side surface of the guiding mechanism contacts the side surface of the base, guiding the base to the center of the column and aligning it with the side seam of the already installed base. Subsequently, welding is performed. After the welding is completed, the base is disassembled and the entire device can be taken out.

[0015] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects: By setting the base, sliding seat, guiding mechanism and driving mechanism, the present invention firstly uses the guiding mechanism and the sliding seat in cooperation to realize the auxiliary guiding during the downward movement of the base, ensuring that the base will finally fall above the column during the downward movement. This operation reduces the manual traction operation and improves safety. The driving mechanism can automatically adjust the guiding angle of the guiding mechanism during the movement of the sliding seat and the guiding mechanism, which is determined according to the falling position of the base and the initially set position of the guiding mechanism. In this way, as long as the positions of the end of the guiding mechanism and the sliding seat are preset in advance, automatic guiding can be realized, providing a lateral supporting force for the seam alignment, greatly improving the efficiency of the seam alignment and the overall efficiency of the base installation. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is of the present invention Figure 1 is the enlarged structural schematic diagram at A in; Figure 3 is the top view structural schematic diagram of the present invention; Figure 4 is the three-dimensional structural schematic diagram of the present invention; Figure 5 is the structural schematic diagram inside the base of the present invention; Figure 6 is the structural schematic diagram of the sliding seat and the extension block of the present invention.

[0017] Explanation of the reference numerals in the schematic diagram: 1. Base; 2. Sliding seat; 3. Connecting rod; 4. Guide plate; 5. Rotating groove; 6. Sliding groove; 7. Connecting shaft; 8. Pushing plate; 9. Support plate; 10. Driving groove; 11. Extension block; 12. Stable groove; 13. Stable block; 14. Moving block; 15. Support block; 16. Pushing groove; 17. Driving tooth; 18. First rack; 19. Limit block; 20. Limit groove; 21. Communication port; 22. Second rack. Detailed Embodiment

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. The present invention will be further described below with reference to the embodiments.

[0019] Please refer to Figures 1 to 6 , in an embodiment of the present application, an auxiliary device for installing a large equipment base includes a base 1 arranged on the outer side of a column. A cavity with one end open is formed inside the base 1, and a sliding seat 2 is slidably connected inside the cavity; When in use, the end of the sliding seat 2 away from the cavity is located in the gap between two columns. A guiding mechanism with adjustable supporting angle is also arranged on the sliding seat 2, and the guiding mechanism guides during the process of the base falling onto the column. Driving mechanisms are arranged on both sides of the base. The guiding mechanism is connected to the driving mechanisms. During the process of the base falling, the driving mechanisms retract the end of the sliding seat 2 away from the cavity into the cavity and make the guiding mechanism perpendicular to the ground.

[0020] Furthermore, a pushing groove 16 is formed at one end of the base 1 away from the opening of the cavity. A push plate 8 is inserted into the pushing groove 16, and one end of the push plate 8 extends into the cavity and is connected to the side surface of the sliding seat 2.

[0021] This embodiment is implemented as follows: When in use, first, the positions of the two relatively horizontal columns on the outermost side should be determined, and the base 1 should be leveled with them. After determining the horizontal position, the base 1 is fixed. After the fixing of the base 1 is completed, the position of the sliding seat 2 is adjusted. The sliding seat 2 needs to be pushed out of the inside of the base 1 through the push plate 8, and the end of the sliding seat 2 away from the cavity is pushed between the two columns. It should be noted that at this time, the position of the end of the sliding seat 2 should be the position where the base needs to be installed, and the two should be consistent. At the same time, when the end of the sliding seat 2 is between multiple columns, this also ensures that when the base wants to be completely aligned with the columns for installation, it will definitely contact the outer side surface of the guiding mechanism during the process of the base falling, which also ensures that the subsequent guiding mechanism can replace manual traction for guiding; During the initial adjustment of the sliding seat 2, the driving mechanism drives the guiding mechanism to move. At this time, the left included angle between the guiding mechanism and the sliding seat 2 should be less than 90 degrees. Subsequently, the base is lifted by an external hoisting device, brought closer to the column, and then allowed to fall; During the gradual downward movement of the base, it contacts the outer side of the guiding mechanism, squeezing the guiding mechanism and the sliding seat 2 into the base 1. During the squeezing process, the driving mechanism squeezes the guiding mechanism towards the base until the left included angle between the guiding mechanism and the sliding seat 2 is 90 degrees. During this process, the outer side of the guiding mechanism contacts the side of the base, guiding the base to the center of the column and aligning it with the side of the already installed base. Subsequently, welding is carried out. After the welding is completed, the base 1 is disassembled and removed, and the entire device can be taken out. In this way, the operation of manual traction is greatly reduced, ensuring safety, and at the same time, the alignment operation is more convenient.

[0022] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 As a preferred embodiment of the present application, the guiding mechanism includes a rotating groove 5 opened at one end of the sliding seat 2 away from the cavity, a guiding plate 4 rotatably connected in the rotating groove 5, and a connecting shaft 7 provided at one end of the guiding plate 4 away from the rotating groove 5. One end of a supporting plate 9 is rotatably connected to the connecting shaft 7, and the other end of the supporting plate 9 is connected to the driving mechanism through a connecting rod 3.

[0023] This embodiment is realized as follows: By using the guiding plate 4 to guide the base, it is ensured that during the downward movement of the base, the side can fully contact the guiding plate 4. The shape of the guiding plate 4 completely depends on the shape of the base to be installed, which can be replaced according to the actual situation. The purpose of the rotating groove 5, the connecting shaft 7, and the supporting plate 9 is to adjust the angle when the base contacts the outer side of the guiding plate 4, and provide power for the movement of the driving mechanism and the sliding seat 2, realizing real-time adaptive adjustment without manual operation. During actual use, the end of the sliding seat 2 and the lower end of the guiding plate 4 should be pushed by a push plate 8 to the lower part of the base. At this time, the left included angle between the guiding plate 4 and the sliding seat 2 should be within 90 degrees, and the guiding plate 4 is in an inclined state. During the inclination process of the guiding plate 4, the supporting plate 9 will naturally drive the connecting rod 3 and the driving mechanism to move backward, and the supporting plate 9 will also be inclined. When the base is pressed down and contacts the side of the guiding plate 4, it will provide an outward extrusion force, squeezing the sliding seat 2 and the supporting plate 9 into the base 1. When the sliding seat 2 moves inward, it will drive the driving mechanism to move forward, thus moving the supporting plate 9 forward and extruding the guiding plate 4 outward. Finally, the angle of the guiding plate 4 should be adjusted to 90 degrees, making the outer side of the guiding plate 4 flush with the side of the base, thus realizing the functions of guiding and alignment.

[0024] At the same time, when the angle of the guiding plate 4 should be adjusted to 90 degrees, the sliding seat 2 is also received into the base 1, which will not affect the bottom of the base. This shows that there are almost no requirements for the height of the column and the installation height of the base, and the applicability is strong, without considering the problem of the column height.

[0025] Please refer to Figures 1 to 6 , as a preferred embodiment of the present application, sliding grooves 6 are provided on both sides inside the guiding cavity, and both sides of the sliding seat 2 are slidably connected inside the sliding grooves 6; The driving mechanism includes driving grooves 10 provided on both sides of the base 1 and driving teeth 17 installed at the central axis inside the driving grooves 10. A through communication port 21 is provided between the sliding grooves 6 and the driving grooves 10. Extension blocks 11 are further provided on both sides of the sliding seat 2. A second rack 22 is installed on the side surface of the extension block 11, and the second rack 22 is meshed and connected with the driving teeth 17; A limiting groove 20 is further provided on the side surface of the driving groove 10 away from the communication port 21 inside. A limiting block 19 is slidably connected in cooperation inside the limiting groove 20. One side of the limiting block 19 is connected to one side of a moving block 14, and the other side of the connecting block is connected to a first rack 18 meshed and connected with the driving teeth 17. A support block 15 is provided on the connecting block, and the guiding mechanism is connected between the two support blocks 15.

[0026] Furthermore, a stabilizing groove 12 is further provided below the inside of the sliding groove 6. One end of a stabilizing block 13 is slidably connected inside the stabilizing groove 12, and the other end of the stabilizing block 13 is connected below the extension block 11.

[0027] Furthermore, the number of the driving teeth 17 is several.

[0028] Furthermore, the sum of the thicknesses of the extension block 11 and the second rack 22 is less than the width of the sliding groove 6.

[0029] Furthermore, the length of the stabilizing groove 12 is the same as the length of the communication port 21.

[0030] This embodiment is implemented as follows: Regarding how to achieve the technical effect that during the tilting process of the guiding plate 4, the support plate 9 will naturally drive the connecting rod 3 and the driving mechanism to move backward, and the support plate 9 will also tilt. This driving mechanism is achieved through two symmetrically arranged driving grooves 10 on the base 1, in cooperation with the driving teeth 17 provided inside. First, the sliding seat 2 is slidably installed inside the sliding groove 6 through the extension blocks 11 provided on both sides, enabling the sliding seat 2 to slide inside it. And the sliding groove 6 and the driving groove 10 are penetrated by the communication port 21. The sliding seat 2 is connected to the driving teeth 17 through the extension blocks 11 and the second rack 22 provided on the side surface, ensuring that during the sliding process of the sliding seat 2, the driving teeth 17 will rotate accordingly; At the same time, a moving block 14 is also provided on the other side of the driving groove 10. The moving block 14 slides inside the driving groove 10 through the limit block 19. At the same time, a first rack 18 is also provided on the side of the moving block 14. The first rack 18 is also engaged with the driving tooth 17. This ensures that when the second rack 22 drives the driving tooth 17 to rotate, the first rack 18 will also be driven by the driving tooth 17 to move in the opposite direction. In this way, when the sliding seat 2 moves outward, the moving block 14 will move in the opposite direction, thereby driving the support block 15 and the connecting rod 3 to move. During the displacement of the connecting rod 3, the support plate 9 will be driven to move, so as to adjust the angle of the guide plate 4.

[0031] The stabilizing block 13 is used in conjunction with the stabilizing groove 12 to prevent the extension block 11 and the second rack 22 from being offset during the displacement of the sliding seat 2 and to provide a limiting function to prevent the sliding seat 2 from completely disengaging from the sliding groove 6 .

[0032] At the same time, setting up multiple driving teeth 17 can ensure that the movement of the moving block 14 is smoother; and the sum of the thickness of the extension block 11 and the second rack 22 is less than the width of the slide groove 6. This is to prevent the extension block 11 from driving the second rack 22 to move and not be restricted by the slide groove 6.

[0033] See also Figures 1 to 6 , a method for using an auxiliary device for installing a large equipment base, the method comprising the following steps: Step 1: Determine the positions of the two relatively horizontal columns on the outermost sides, and make the base 1 level with the two columns. After determining the horizontal position, fix the base 1. After the base 1 is fixed, adjust the position of the sliding seat 2, and push the end of the sliding seat 2 away from the cavity to between the two columns to ensure that the base can contact the outer side of the guide mechanism during the falling process; Step 2: During the outward movement of the sliding seat 2, the driving mechanism drives the guide mechanism to move. At this time, the left angle between the guide mechanism and the sliding seat 2 should be less than 90 degrees. Then, the base is lifted by the external lifting equipment, aligned with the column, and then dropped; Step 3. As the base gradually falls, it contacts the outer side of the guide mechanism, squeezing the guide mechanism and the sliding seat 2 into the base 1. During the squeezing process, the driving mechanism squeezes the guide mechanism toward the base until the left angle between the guide mechanism and the sliding seat 2 is 90 degrees. During this process, the outer side of the guide mechanism contacts the side of the base, guiding the base to the center of the column and aligning it with the installed side of the base, followed by welding. After welding is completed, the base 1 can be disassembled and the entire device can be taken out.

[0034] In summary, the present invention is provided with a base, a sliding seat, a guiding mechanism and a driving mechanism. First, through the cooperation of the guiding mechanism and the sliding seat, auxiliary guiding can be realized during the falling process of the base, ensuring that the base will finally fall above the column during the falling process. This operation reduces manual traction operations and improves safety. The driving mechanism can automatically adjust the guiding angle of the guiding mechanism during the movement of the sliding seat and the guiding mechanism, which is determined according to the falling position of the base and the initial position of the guiding mechanism. In this way, as long as the positions of the guiding mechanism and the end of the sliding seat are preset in advance, automatic guiding can be realized, providing a lateral supporting force for the base joint, greatly improving the joint efficiency and the overall installation efficiency of the base.

[0035] The above has schematically described the present invention and its implementation manners. This description is not restrictive, and only one of the implementation manners of the present invention is shown in the drawings. The actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

[0036] In addition, it should be understood that although this specification is described according to implementation manners, not every implementation manner only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

Claims

1. An auxiliary device for installing a large equipment base, comprising a base (1) arranged on the outer side of a column, characterized in that: A cavity with an open end is formed in the base (1), and a sliding seat (2) is slidably connected to the cavity; When in use, the end of the sliding seat (2) that is away from the cavity is located in the gap between the two columns. The sliding seat (2) is also provided with a guide mechanism with an adjustable support angle, and the guide mechanism guides the base during the process of falling onto the column. Driving mechanisms are arranged on both sides of the base, and the guide mechanism is connected to the driving mechanism. When the base is falling, the driving mechanism retracts the end of the sliding seat (2) away from the cavity into the cavity and makes the guide mechanism perpendicular to the ground.

2. The auxiliary device for installing a large equipment base according to claim 1, characterized in that: The guide mechanism comprises a rotation groove (5) provided at an end of the sliding seat (2) away from the cavity, a guide plate (4) rotatably connected in the rotation groove (5), and a connecting shaft (7) provided at an end of the guide plate (4) away from the rotation groove (5), one end of a support plate (9) being rotatably connected to the connecting shaft (7), and the other end of the support plate (9) being connected to the driving mechanism via a connecting rod (3).

3. The auxiliary device for installing a large equipment base according to claim 1, characterized in that: Slide grooves (6) are provided on both sides of the cavity, and both sides of the sliding seat (2) are slidably connected in the slide grooves (6); The driving mechanism comprises driving grooves (10) provided on both sides of the base (1) and driving teeth (17) installed at the central axis of the driving grooves (10); a through communication port (21) is provided between the sliding grooves (6) and the driving grooves (10); extension blocks (11) are provided on both sides of the sliding seat (2); a second rack (22) is installed on the side of the extension block (11); and the second rack (22) is meshedly connected with the driving teeth (17); A limiting groove (20) is also provided on the side of the driving groove (10) away from the connecting port (21); the limiting groove (20) is slidably connected to a limiting block (19); the outer side of the limiting block (19) is connected to one side of the moving block (14); the other side of the connecting block is connected to a first rack (18) meshing with the driving tooth (17); a supporting block (15) is provided on the connecting block, and a guide mechanism is connected between the two supporting blocks (15).

4. The auxiliary device for installing a large equipment base according to claim 3, characterized in that: A stabilizing groove (12) is also provided at the lower part of the slide groove (6), and one end of a stabilizing block (13) is slidably connected to the inside of the stabilizing groove (12), and the other end of the stabilizing block (13) is connected to the lower part of the extension block (11).

5. The auxiliary device for installing a large equipment base according to claim 3, characterized in that: The number of the driving teeth (17) is several.

6. The auxiliary device for installing a large equipment base according to claim 1, characterized in that: A push groove (16) is also formed at one end of the base (1) away from the cavity opening. A push plate (8) is inserted into the push groove (16). One end of the push plate (8) extends into the cavity and is connected to the side of the sliding seat (2).

7. The auxiliary device for installing a large equipment base according to claim 4, characterized in that: The sum of the thicknesses of the extension block (11) and the second rack (22) is smaller than the width of the slide groove (6).

8. The auxiliary device for installing a large equipment base according to claim 7, characterized in that: The length of the stabilizing groove (12) is the same as the length of the connecting opening (21).

9. A method for using the auxiliary device for installing a large equipment base according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: Step 1: Determine the positions of the two relatively horizontal columns on the outermost sides, align the base (1) with the two, and fix the base (1) after determining the horizontal position. After the base (1) is fixed, adjust the position of the sliding seat (2), and push the end of the sliding seat (2) away from the cavity to between the two columns to ensure that the base can contact the outer side of the guide mechanism during the falling process; Step 2: During the outward movement of the sliding seat (2), the driving mechanism drives the guide mechanism to move. At this time, the left angle between the guide mechanism and the sliding seat (2) should be less than 90 degrees. Then, the base is lifted by an external lifting device, aligned with the column, and then dropped; Step 3: As the base gradually falls, it contacts the outer side of the guide mechanism, squeezing the guide mechanism and the sliding seat (2) into the base (1). During the squeezing process, the driving mechanism squeezes the guide mechanism toward the base until the left angle between the guide mechanism and the sliding seat (2) is 90 degrees. During this process, the outer side of the guide mechanism contacts the side of the base, guiding the base to the center of the column and aligning it with the installed side of the base. Then, welding is performed. After welding is completed, the base (1) is disassembled and the device is taken out as a whole.