A steel pipe inner and outer surface overall galvanizing anticorrosion auxiliary tool and method

Abstract

The application discloses a kind of steel pipe inner and outer surface overall zinc-plating anticorrosion auxiliary tool and method, it is related to steel material zinc-plating technical field.In the application: guide rail bar is movably installed with moving frame, the central position of moving frame is rotatably installed with pivot connecting rod, pivot connecting rod upper end is installed with gear disc meshing with driving screw, pivot connecting rod lower end is fixedly connected with zinc-plating auxiliary frame located directly below moving frame.Zinc-plating auxiliary frame includes identical structure upper frame, lower frame, and a plurality of side position vertical boards are fixedly connected with upper frame, lower frame one side position, the inside direction of side position vertical board is fixedly provided with several vertical board side pipes, and auxiliary insertion frame is inserted in the position of vertical board transverse insertion hole of side position vertical board, and zinc-plating auxiliary frame is cooperatively installed with a plurality of side position installation frames opposite to the position of side position vertical board.The application effectively controls the FeCl2 remaining in pipe surface, inside into zinc-plating pool, avoids pipe surface and inner surface to form rough zinc-plating layer, and reduces zinc consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of galvanizing steel, in particular to a steel pipe inner and outer surface overall galvanizing anticorrosion auxiliary tool and method. BACKGROUND

[0002] Hot galvanizing is a commonly used method for galvanizing steel in industry, and before hot galvanizing, pickling is mostly used to pretreat the steel. Taking hydrochloric acid pickling as an example, when the steel is cleaned in hydrochloric acid, the rust layer and the oxidation layer on the surface of the steel will undergo the following chemical reactions:

[0003] FeO + HCl → FeCl2 + H2O;

[0004] Fe + HCl → FeCl2 + H2↑;

[0005] FeO + HCl → FeCl2 + FeCl3 + H2O;

[0006] Fe2O3 + HCl → FeCl3 + H2O;

[0007] When the pickling reaction generates FeCl2, FeCl3, H2O and H2, part of the FeCl2 removed from the iron oxide scale remains on the surface of the steel, and for steel pipes, it is more difficult to clean the FeCl2 remaining on the inner surface of the pipe. After the pickled steel pipe enters the pool, the water flow in the pipe is not good, and the water source in the cleaning pool is also affected by the pickling liquid brought by the steel pipe. The FeCl2 in the inner surface of the steel pipe is not clean, and after entering the galvanizing pool, the iron atoms react with zinc to form iron-zinc crystals, which float in the zinc liquid or settle at the bottom of the galvanizing pool, and may also adhere to the inner and outer surfaces of the steel pipe, causing rough galvanizing. Not only does it deteriorate the appearance of the coating, but also increases the zinc consumption.

[0008] In summary, how to effectively control the FeCl2 remaining on the surface and inside of the pipe to enter the galvanizing pool, avoid the formation of rough galvanizing layer on the surface and inner surface of the pipe, and reduce the zinc consumption, has become a problem to be solved. SUMMARY

[0009] The technical problem to be solved by the present application is to provide a steel pipe inner and outer surface overall galvanizing anticorrosion auxiliary tool and method, so as to effectively control the FeCl2 remaining on the surface and inside of the pipe to enter the galvanizing pool, avoid the formation of rough galvanizing layer on the surface and inner surface of the pipe, and reduce the zinc consumption.

[0010] To solve the above technical problems, the present application is realized by the following technical scheme:

[0011] The application provides a kind of steel pipe inner and outer surface overall zinc plating anticorrosion auxiliary tool, including main frame, one side of main frame is equipped with horizontal transverse servo motor, main frame is equipped with the drive screw connected with servo motor output shaft, main frame includes guide rail bar at the two sides of drive screw, mobile frame is movably installed on guide rail bar, central position of mobile frame is rotatably installed with shaft connecting rod, shaft connecting rod upper end is equipped with gear disc meshing with drive screw, shaft connecting rod lower end is fixedly connected with zinc plating auxiliary frame located directly below mobile frame.Zinc plating auxiliary frame includes structure same upper frame and lower frame, a plurality of side vertical plates are fixedly connected on one side of upper frame and lower frame, a plurality of vertical plate side pipes are fixedly arranged on the inner side of side vertical plate, vertical plate side pipe is provided with vertical plate transverse insertion hole, auxiliary insertion frame is inserted in the position of vertical plate transverse insertion hole, auxiliary insertion frame includes horizontal insertion long rod protruding from vertical plate side pipe, a plurality of fixed vertical plates are fixedly arranged on the other side of upper frame and lower frame, zinc plating auxiliary frame is movably installed with a plurality of side installation frames opposite to side vertical plate, a plurality of matched side pipes are arranged in the position of vertical plate side pipe, side installation frame is provided with side pipe transverse through hole communicating with matched side pipe.

[0012] As a preferred technical scheme of zinc plating anticorrosion auxiliary tool in the application: main frame four corner positions are connected with moving connecting rod driving main frame movement.

[0013] As a preferred technical scheme of zinc plating anticorrosion auxiliary tool in the application: mobile frame includes two groups of vertical rods, vertical rod upper end is fixedly connected with fixed bottom plate, fixed bottom plate upper side is fixedly connected with guide block matched installed on guide rail through bolt, guide rail is provided with guide rail groove, guide block is provided with guide wheel installed in the position of guide rail groove.

[0014] As a preferred technical scheme of zinc plating anticorrosion auxiliary tool in the application: the middle position of mobile frame is provided with circular ring plate, the inner circumference of circular ring plate is provided with diameter plate, shaft connecting rod is rotatably installed in the middle position of diameter plate, a plurality of fixed inclined frame rods are fixedly connected on the ring side of shaft connecting rod, a plurality of fixed inclined frame rods are connected with rotating ring plate on the lower side, rotating ring plate is rotatably installed on the upper side of circular ring plate; wherein, roller structure is arranged between rotating ring plate and circular ring plate.

[0015] As a preferred technical scheme of zinc plating anticorrosion auxiliary tool in the application: the length of vertical plate side pipe is La, the length of horizontal insertion long rod protruding from vertical plate side pipe is Lb, the length of pipe is Lc, then 2 / 3Lb>La+Lb>1 / 2Lb.

[0016] As a preferred technical scheme of zinc plating anticorrosion auxiliary tool in the application: auxiliary insertion frame includes vertical rod, a plurality of horizontal insertion long rods are located on the same side of vertical rod, outer handle is arranged on the other side of vertical rod.

[0017] As a preferred technical scheme of the galvanizing anticorrosion auxiliary tool in the application: the upper and lower side ends of the side installation frame are provided with clamping blocks, the clamping blocks are provided with clamping notches, and the clamping blocks are provided with clamping block vertical holes in communication with the clamping notches; the upper frame and the lower frame are provided with front side notches at positions where the upper frame and the lower frame are connected with the side installation frame in a matched mode, and the upper frame and the lower frame are provided with front end vertical holes in communication with the front side notches; and the clamping block vertical holes and the front end vertical holes are provided with a bolt rod in a matched mode at positions of the clamping block vertical holes and the front end vertical holes.

[0018] As a preferred technical scheme of the galvanizing anticorrosion auxiliary tool in the application: the vertical plate side pipes of the side vertical plate are provided with first horizontal blocking strips on both sides, and the matched side pipes of the side installation frame are provided with second horizontal blocking strips on both sides.

[0019] The application also provides a control method of the steel pipe inner and outer surface overall galvanizing anticorrosion auxiliary tool.

[0020] (i) After the pickling is completed, the movable connecting rod drives the main frame to enter the clean water pool.

[0021] (ii) When the galvanizing auxiliary frame is completely immersed in the clean water pool, the main frame stops descending, the servo motor is started, the servo motor drives the driving screw to rotate in a forward and reverse mode by a certain rotation angle, when the driving screw rotates, the gear disc at the upper end of the driving shaft connecting rod rotates, and the driving shaft connecting rod synchronously rotates.

[0022] (iii) When the gear disc rotates, the gear disc is displaced relative to the driving screw, the movable frame and the galvanizing auxiliary frame synchronously move, the driving shaft connecting rod drives the galvanizing auxiliary frame to rotate, the galvanizing auxiliary frame performs self-rotation while moving linearly along the direction of the driving screw in the clean water pool, and the pickled pipe material installed on the galvanizing auxiliary frame is dynamically cleaned in the clean water pool.

[0023] (iv) After the pipe material is cleaned in the clean water pool, the servo motor is stopped, the movable connecting rod drives the main frame to rise, and when the galvanizing auxiliary frame is completely separated from the clean water pool, the main frame stops rising.

[0024] (v) The servo motor is started again, the servo motor drives the driving screw to rotate in a forward and reverse mode by a certain rotation angle, the galvanizing auxiliary frame performs self-rotation while moving linearly along the direction of the driving screw after being separated from the clean water pool, the liquid on the outer side surface of the pipe material and the inner side of the pipe material is thrown away from the pipe material, and then the pipe material enters the hot galvanizing pool.

[0025] Compared with the prior art, the application has the following beneficial effects:

[0026] The application sets up a main frame on the structure of the pipe hot galvanizing process, sets up a servo motor, a driving screw and a moving frame on the main frame, drives the driving screw to rotate through the servo motor, drives the rotating shaft connecting rod and the galvanizing auxiliary frame to move in two directions of horizontal (the arrangement direction of the driving screw) and self-rotation, can quickly clean and dehydrate the horizontal pipe on the galvanizing auxiliary frame, greatly reduces the FeCl2 remaining on the surface and inside of the pipe, avoids the remaining FeCl2 entering the galvanizing pool, avoids the pipe surface and inner surface forming a rough galvanizing layer, and also reduces the zinc consumption to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the overall structure schematic diagram of the galvanizing anticorrosion auxiliary tool in the application.

[0028] Figure 2 It is the separated and sectional structure schematic diagram of the middle part. Figure 1

[0029] Figure 3 It is the cooperation structure schematic diagram of the galvanizing auxiliary frame and the side installation frame in the application.

[0030] Figure 4 It is the structure schematic diagram of another side view in the application (not including the separated side installation frame). Figure 3 Figure 3

[0031] Figure 5 It is the structure schematic diagram of the auxiliary insertion frame separating from the galvanizing auxiliary frame in the application.

[0032] Figure 6 It is the structure schematic diagram of the side installation frame in the application.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] ​​​1 - main frame, 101 - moving link, 102 - guide rail rod, 103 - guide rail groove; 2 - servo motor; 3 - drive screw; 4 - moving frame, 401 - fixed bottom plate, 402 - guide wheel block, 403 - circular ring plate, 404 - diameter plate; 5 - rotating shaft link, 501 - gear plate, 502 - fixed inclined frame rod, 503 - rotating ring plate; 6 - roller structure; 7 - bolt; 8 - galvanized auxiliary frame, 801 - upper frame, 802 - lower frame, 803 - side vertical plate, 804 - vertical plate side tube, 805 - vertical plate transverse insertion hole, 806 - fixed vertical plate, 807 - front side notch, 808 - front end vertical hole, 809 - first horizontal blocking bar; 9 - side mounting frame, 901 - matching side tube, 902 - second horizontal blocking bar, 903 - clamping block, 904 - clamping notch, 905 - clamping block vertical hole, 906 - side tube horizontal through hole; 10 - pipe; 11 - auxiliary insertion frame, 1101 - vertical rod, 1102 - horizontal insertion long rod, 1103 - outer side handle; 12 - bolt rod. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0036] Example 1

[0037] Please refer to Figures 1 to 6 In the present application, the main structural features of the steel pipe inner and outer surface galvanizing anticorrosion auxiliary tool are as follows:

[0038] Main frame 1: The upper side of the main frame 1 is connected with a plurality of moving links 101, the moving links 101 are connected with the moving mechanism of the entire hot dip galvanizing production line, and the moving links 101 can drive the main frame 1 to move horizontally and vertically. The main frame 1 includes two parallel guide rail rods 102, and the guide rail rods 102 are provided with guide rail grooves 103.

[0039] Servo motor 2: The servo motor 2 is fixedly installed on one side of the main frame 1, and the output shaft of the servo motor 2 is further connected with a drive screw 3, and the drive screw 3 is installed between the two lateral short plates of the main frame 1 through bearings.

[0040] The upper end of the moving frame 4 is installed on the guide rail rod 102, and the upper end of the moving frame 4 is a combined structure of a fixed bottom plate 401 and a guide wheel block 402. The guide wheel block 402 is also provided with a guide wheel structure, which can roll in the guide rail groove 103. The fixed bottom plate 401 is provided with mounting holes at the four corner positions, and the guide wheel block 402 is provided with four threaded holes at the four corner positions. The guide wheel block 402 is first installed on the guide rail rod 102, and then the fixed bottom plate 401 is installed on the bottom side of the guide wheel block 402 through the bolts 7. The middle position of the bottom frame of the moving frame 4 is also provided with a circular ring plate 403, and the inner circumference of the circular ring plate 403 is provided with a diameter plate 404.

[0041] The rotating shaft connecting rod 5 is rotatably installed in the middle position of the diameter plate 404 through a bearing sleeve. The rotating shaft connecting rod 5 is fixedly installed with a gear plate 501 at the upper side end. The gear plate 501 is engaged with the thread of the drive screw 3. The rotation of the drive screw 3 can drive the gear plate 501 to rotate, and at the same time, the gear plate 501 moves in position relative to the drive screw 3. The rotating shaft connecting rod 5 is fixedly connected with a plurality of fixed inclined frame rods 502 on the ring side. The plurality of fixed inclined frame rods 502 are connected to a rotating ring plate 503 on the lower side. The lower side of the rotating ring plate 503 and the upper side of the circular ring plate 403 are both provided with an annular groove structure. A plurality of roller structures 6 are installed in the annular groove structure, so that the rotating ring plate 503 can not only vertically support the rotating shaft connecting rod 5, but also can rotate synchronously with the rotating shaft connecting rod 5.

[0042] The galvanized auxiliary frame 8 includes an upper frame 801 and a lower frame 802. A plurality of side vertical plates 803 are provided between the upper frame 801 and the lower frame 802. A plurality of fixed vertical plates 806 are provided at the opposite side of the side vertical plate 803. The fixed vertical plates are staggered with the side vertical plate 803, which facilitates the installation of the pipe. A plurality of vertical plate side pipes 804 are provided on the inner side of the side vertical plate 803. First horizontal blocking strips are provided on both sides of the vertical plate side pipe 804. The side vertical plate 803 is provided with a vertical plate transverse hole 805 which is in communication with the vertical plate side pipe 804. The upper frame 801 and the lower frame 802 are provided with a front side notch 807. The front side notch 807 is located at the opposite side of the side vertical plate 803. A front end vertical hole 808 is also provided at the position of the front side notch 807.

[0043] Side installation frame 9: One side of the side installation frame 9 is provided with a plurality of matching side pipes 901, and the two sides of the matching side pipes 901 are provided with second horizontal blocking strips 902. The side installation frame 9 is provided with a side pipe horizontal through hole 906 which is in communication with the matching side pipes 901. The upper and lower side ends of the side installation frame 9 are provided with clamping blocks 903, and the clamping blocks 903 are provided with clamping notches 904. The upper plate of the clamping notches 904 is installed at the front side notch 807 position of the galvanizing auxiliary frame 8. The upper plate of the clamping notches 904 is provided with a clamping block vertical hole 905, and the latch rod 12 is installed at the position aligned clamping block vertical hole 905 and front section vertical hole position. The side installation frame 9 can be installed on one side of the galvanizing auxiliary frame 8.

[0044] Auxiliary insertion frame 11: The auxiliary insertion frame 11 includes a vertical rod 1101, one side of which is provided with an outer side handle 1103, and the other side is provided with a plurality of horizontal insertion long rods 1102. The horizontal insertion long rods 1102 are inserted into the vertical plate horizontal insertion hole 805 position of the side vertical plate 803. Most of the horizontal insertion long rods 1102 protrude from the vertical plate side pipe 804. The pipe 10 is first horizontally inserted into the horizontal insertion long rod 1102 position, and then moved towards the vertical plate side pipe 804, closely attached to the inner side of the side vertical plate 803, and then the side installation frame 9 is installed. The matching side pipe 901 of the side installation frame 9 is aligned and inserted into the outer side port of the pipe 10.

[0045] Example two, in the present application, the installation method of the steel pipe inner and outer surface galvanizing anticorrosion auxiliary tool, mainly includes the following contents:

[0046] Firstly, the servo motor 2 and the drive screw 3 are installed on the main frame 1. This installation method is relatively simple, and will not be described in detail in the present application.

[0047] Secondly, the moving frame 4 is installed on the main frame 1. When installing, the four guide wheel blocks 402 are installed on the upper side of the guide rail rod 102. The fixed bottom plate 401 at the upper side end of the moving frame 4 is placed on the lower side of the guide rail rod 102. The four guide wheel blocks 402 are fixedly installed in sequence with the four fixed bottom plates 401 at the upper side end of the moving frame 4.

[0048] Thirdly, after the moving frame 4 is installed, the rotating shaft connecting rod 5 is vertically installed in the middle position of the diameter plate 404 through the bearing structure, and the rotating ring plate 503 is also installed on the upper side position of the circular ring plate 403 of the moving frame 4.

[0049] Fifthly, the gear plate 501 is fixedly installed on the upper side end of the rotating shaft connecting rod 5. When installing, the gear plate 501 is engaged with the threads of the drive screw 3.

[0050] Sixth, the galvanized auxiliary frame 8 is installed at the lower end of the rotating shaft connecting rod 5, and the lower end of the rotating shaft connecting rod 5 is fixedly connected to the center of the upper frame 801 of the galvanized auxiliary frame 8 through bolts or buckling structures.

[0051] Seventh, the pipe 10 to be processed is installed on the galvanized auxiliary frame 8. First, the horizontal long rod 1102 of the auxiliary insertion frame 11 is inserted into the vertical plate horizontal insertion hole 805 of the side vertical plate 803, and the vertical rod 1101 is tightly arranged outside the side vertical plate 803, and the horizontal long rod 1102 protrudes from the vertical plate side pipe 804 to the maximum extent. The pipe 10 is inserted into the horizontal long rod 1102 protruding from the vertical plate side pipe 804, and the center of gravity of the completely installed pipe 10 is within the range supported by the horizontal long rod 1102. After the pipe 10 is installed on all the horizontal long rods 1102 of the auxiliary insertion frame 11, a side installation frame 9 is installed at the opposite side of the side vertical plate 803 at the current position. During installation, the matching side pipe 901 of the side installation frame 9 is inserted into the other port of the pipe 10, the clamping block vertical hole 905 of the clamping block 903 at the upper and lower ends of the side installation frame 9 is aligned with the front end vertical hole 808 of the upper frame 801 and the lower frame 802, and the insertion pin rod 12 is inserted. Then, the auxiliary insertion frame 11 is pulled out from the position of the side vertical plate 803. The horizontal long rod 1102 is pulled out of the pipe 10, which can reduce the flow resistance of the liquid in the pipe 10. In combination with the through-type vertical plate horizontal insertion hole 805, the side pipe horizontal through hole 906 and the pipe port exposed at both ends of the pipe 10, the liquid flow in the pipe 10 is basically free of resistance.

[0052] According to the above method, the pipe 10 at other positions of the galvanized auxiliary frame 8 is installed in sequence.

[0053] When disassembling, the auxiliary insertion frame 11 is first inserted at the position of the side vertical plate 803, and then the side installation frame 9 is disassembled. The pipe 10 is taken out under the support of the horizontal long rod 1102.

[0054] In the third embodiment, the control method of the galvanized anticorrosion auxiliary tool in the application mainly includes the following steps:

[0055] First, after pickling, the main frame 1 is moved into the clean water tank by the moving connecting rod 101.

[0056] Second, when the galvanized auxiliary frame 8 is completely immersed in the clean water tank, the main frame 1 stops descending, the servo motor 2 starts, and the servo motor 2 drives the driving screw 3 to rotate in forward and reverse directions by a certain rotation angle. When the driving screw 3 rotates, the gear disc 501 at the upper end of the driving rotating shaft connecting rod 5 rotates, and the rotating shaft connecting rod 5 rotates synchronously.

[0057] Third step, gear plate 501 rotates when gear plate 501 relative displacement of driving screw 3, moving frame 4, galvanized auxiliary frame 8 synchronous movement, rotating shaft connecting rod 5 drive galvanized auxiliary frame 8 rotation, galvanized auxiliary frame 8 in the pool along the direction of driving screw 3 linear motion while self-rotation, galvanized auxiliary frame 8 after pickling pipe installed in the pool in the dynamic cleaning.

[0058] Fourth step, pipe in the pool after washing, servo motor 2 stop, moving link 101 drive main frame 1 rises, until galvanized auxiliary frame 8 completely out of the pool, main frame 1 stop rising.

[0059] Fifth step, servo motor 2 is started again, servo motor 2 drive driving screw 3 certain angle of rotation of the positive and negative rotation, galvanized auxiliary frame 8 out of the pool after along the direction of driving screw 3 linear motion while self-rotation, the pipe outside surface and the liquid inside the pipe from the pipe, and then enter the hot dip galvanizing pool.

[0060] The above only for the preferred embodiments of the present application, and not to limit the present application, any modification, equivalent replacement and improvement within the spirit and principles of the present application, etc., should be included in the scope of protection of the present application.

Claims

1. An auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of steel pipes, characterized in that: The system includes a main frame (1), on one side of which a horizontally mounted servo motor (2) is installed. The main frame (1) is also equipped with a drive screw (3) connected to the output shaft of the servo motor (2). The main frame (1) includes guide rails (102) on both sides of the drive screw (3). A movable frame (4) is movably mounted on the guide rails (102). A rotating shaft connecting rod (5) is rotatably mounted at the center of the movable frame (4). A gear disk (501) meshing with the drive screw (3) is mounted on the upper end of the rotating shaft connecting rod (5). A galvanized auxiliary frame (8) located directly below the movable frame (4) is fixedly connected to the lower end of the rotating shaft connecting rod (5). A circular ring plate (403) is provided in the middle of the movable frame (4), and a diameter plate (404) is provided in the inner circumference of the circular ring plate (403). The rotating shaft connecting rod (5) is rotatably installed in the middle of the diameter plate (404). Several fixed inclined rods (502) are fixedly connected to the ring side of the rotating shaft connecting rod (5). The lower ends of the several fixed inclined rods (502) are connected to a rotating ring plate (503). The rotating ring plate (503) is rotatably installed on the upper side of the circular ring plate (403). A roller structure (6) is provided between the rotating ring plate (503) and the circular ring plate (403). The galvanized auxiliary frame (8) includes an upper frame (801) and a lower frame (802) with identical structures. Multiple side vertical plates (803) are fixedly connected to one side of the upper frame (801) and lower frame (802). Several vertical plate side tubes (804) are fixedly arranged on the inner side of each side vertical plate (803). Each side vertical plate (803) has a horizontal insertion hole (805) communicating with the horizontal insertion hole (804). An auxiliary bracket (11) is inserted into the horizontal insertion hole (805) of the side vertical plate (803). The auxiliary bracket (11) includes a convex... Due to the horizontal insertion of the long rod (1102) of the vertical plate side tube (804), multiple fixed vertical plates (806) are fixedly installed on the other side of the upper frame (801) and lower frame (802), which are staggered with the side vertical plate (803). The galvanized auxiliary frame (8) is equipped with several side mounting frames (9) that are opposite to the side vertical plate (803). The side mounting frame (9) is provided with several mating side tubes (901) that are aligned with the vertical plate side tube (804). The side mounting frame (9) is provided with a side tube horizontal through hole (906) that communicates with the mating side tube (901).

2. The auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of a steel pipe according to claim 1, characterized in that: The main frame (1) is connected to four corners by movable links (101) that drive the main frame (1) to move.

3. The auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of a steel pipe according to claim 1, characterized in that: The movable frame (4) includes two sets of vertical rods. The upper end of the vertical rods is fixedly connected to a fixed base plate (401). The upper side of the fixed base plate (401) is fixedly connected to a guide wheel block (402) that is fitted onto a guide rail rod (102). The guide rail rod (102) has a guide rail groove (103). The guide wheel block (402) is equipped with a guide wheel installed at the position of the guide rail groove (103).

4. The auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of a steel pipe according to claim 1, characterized in that: Let the length of the vertical plate side tube (804) be La, the length of the horizontal insertion rod (1102) protruding from the vertical plate side tube (804) be Lb, and the length of the tube be Lc. Then 2 / 3Lb>La+Lb>1 / 2Lb.

5. The auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of a steel pipe according to claim 1, characterized in that: The auxiliary insert (11) includes a vertical rod (1101), several horizontal insert rods (1102) located on the same side of the vertical rod (1101), and an outer handle (1103) is provided on the other side of the vertical rod (1101).

6. The auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of a steel pipe according to claim 1, characterized in that: The upper and lower sides of the side mounting bracket (9) are provided with locking blocks (903), the locking blocks (903) have locking notches (904), and the locking blocks (903) have locking vertical holes (905) that communicate with the locking notches (904). The upper frame (801), lower frame (802) and side mounting bracket (9) are provided with front notches (807) that cooperate with the locking block (903) at the position where they are connected. The upper frame (801) and lower frame (802) are provided with front vertical holes (808) that communicate with the front notches (807). A pin (12) is installed at the position of the vertical hole (905) of the card block and the front vertical hole (808).

7. The auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of a steel pipe according to claim 1, characterized in that: The side vertical plate (803) has a first horizontal stop bar (809) on both sides of the vertical plate side tube (804), and the side mounting bracket (9) has a second horizontal stop bar (902) on both sides of the mating side tube (901).

8. A control method for an auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of steel pipes, characterized in that, The auxiliary tooling for comprehensive galvanizing and corrosion protection of the inner and outer surfaces of steel pipes, as described in any one of 1 to 7, includes the following steps: (i) After pickling, the moving link (101) drives the main frame (1) into the clear water tank; (ii) When the galvanized auxiliary frame (8) is fully immersed in the clear water pool, the main frame (1) stops descending, the servo motor (2) starts, and the servo motor (2) drives the drive screw (3) to rotate in both directions at a certain angle. When the drive screw (3) rotates, the gear disk (501) at the upper end of the drive shaft connecting rod (5) rotates, and the shaft connecting rod (5) rotates synchronously. (iii) When the gear disk (501) rotates, the gear disk (501) is displaced relative to the drive screw (3), the moving frame (4) and the galvanized auxiliary frame (8) move synchronously, the rotating shaft connecting rod (5) rotates and drives the galvanized auxiliary frame (8) to rotate, the galvanized auxiliary frame (8) moves in a straight line along the direction of the drive screw (3) in the clear water tank and rotates on its own, the pickled pipes installed on the galvanized auxiliary frame (8) are dynamically cleaned in the clear water tank; (iv) After the pipes are cleaned in the clean water tank, the servo motor (2) stops, and the moving link (101) drives the main frame (1) to rise until the galvanized auxiliary frame (8) is completely removed from the clean water tank, at which point the main frame (1) stops rising. (v) The servo motor (2) is started again. The servo motor (2) drives the drive screw (3) to rotate in both directions at a certain angle. After the galvanizing auxiliary frame (8) leaves the clear water tank, it moves in a straight line along the direction of the drive screw (3) while rotating. It throws the liquid off the outer surface of the pipe and the inner side of the pipe away from the pipe and then enters the hot-dip galvanizing tank.

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