A spherical tank equatorial plate welding auxiliary device

Abstract

The present invention discloses a spherical tank equatorial plate welding auxiliary device, which belongs to the field of welding technology and includes a first connecting seat and a second connecting seat, wherein the first connecting seat and the second connecting seat are used to respectively connect two adjacent equatorial plates; the first connecting seat and the second connecting seat are respectively movably connected to a support member, and the second connecting seat drives the equatorial plate to move along the horizontal direction of the support member to drive the two adjacent equatorial plates to butt and splice, and the first connecting seat drives the equatorial plate to move along the vertical direction of the support member to drive the two adjacent equatorial plates to adjust the flatness of the splicing; a driving assembly for driving the first connecting seat and the second connecting seat to move is also provided on the support member. The present invention is used to solve the problem that the equatorial plate of a spherical tank is inconvenient to support and adjust during welding.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a spherical tank equatorial plate welding auxiliary device. Background Art

[0002] A spherical tank is a common pressure vessel, usually used to store flammable and explosive gases or liquids. The spherical tank cannot be formed in one piece and is usually made of multiple equatorial plates spliced ​​and welded together. Therefore, the welding quality of the equatorial plates has a great impact on the reliability of the spherical tank.

[0003] In the actual welding operation, workers need to first align the two equatorial plates by manually moving the equatorial plates, and then start the welding operation. This operation process is time-consuming and labor-intensive, and it is difficult to ensure that there is no gap between the two equatorial plates. Therefore, the welding quality is difficult to control. Therefore, it is very meaningful to design a device that can save time and effort to assist in aligning the equatorial plates. Summary of the invention

[0004] In view of the above problems, the present invention provides a spherical tank equatorial plate welding auxiliary device, which is used to solve the problem that the spherical tank equatorial plate is inconvenient to support and adjust during welding.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A spherical tank equatorial plate welding auxiliary device comprises a first connecting seat and a second connecting seat, wherein the first connecting seat and the second connecting seat are used to respectively connect two adjacent equatorial plates;

[0007] The first connection seat and the second connection seat are movably connected to the support member, respectively. When the second connection seat drives the equatorial plate to move in the horizontal direction of the support member, the two adjacent equatorial plates are driven to butt and splice together. When the first connection seat drives the equatorial plate to move in the vertical direction of the support member, the two adjacent equatorial plates are driven to adjust the flatness of the splicing.

[0008] The supporting member is also provided with a driving assembly which drives the first connecting seat and the second connecting seat to move.

[0009] As a further improvement of the above solution, the driving assembly includes a first screw rod threadedly connected to the first connecting seat, a second screw rod threadedly connected to the second connecting seat, and the first screw rod and the second screw rod are respectively transmission-connected to a first rotating wheel and a second rotating wheel rotatably arranged on the support member;

[0010] The supporting member is also provided with a first guide member for guiding the first connecting seat and a second guide member for guiding the second connecting seat.

[0011] As a further improvement of the above solution, the first screw is spline-connected to the rotating shaft of the first rotating wheel, and the first screw can move up and down along the rotating shaft of the first rotating wheel.

[0012] As a further improvement of the above solution, a first slide seat is rotatably arranged on the first screw rod and is slidably arranged with the first guide member, and the first slide seat penetrates the vertical side wall of the support member and is slidably arranged with the support member;

[0013] A second guide wheel and a plurality of first guide wheels are arranged on the support member, a first pull wire is fixedly arranged on the first slide seat, the first pull wire can pass through the first guide wheel and the second guide wheel, and can be fixed on the rotating shaft of the first rotating wheel.

[0014] As a further improvement of the above scheme, a first slide groove is provided on the support member to facilitate the movement of the first slide seat, and a plurality of first limiting holes close to the first slide groove are also provided on the support member, and the position of the first slide seat is limited by inserting pins into different first limiting holes.

[0015] As a further improvement of the above solution, a rotating shaft is rotatably provided on the support member, the second screw rod is spline-connected to the rotating shaft, and the second screw rod is sleeved on the rotating shaft for reciprocating movement;

[0016] A second slide is rotatably arranged on the second screw rod and is slidably arranged with the second guide member. The second slide passes through the support member upward. A second pull wire is fixedly arranged on the top of the second slide. The second pull wire can pass around the third guide wheel rotatably arranged on the top surface of the support member. The other end of the second pull wire can be fixed on the rotating shaft of the second rotating wheel.

[0017] As a further improvement of the above solution, a worm wheel is fixedly arranged on the rotating shaft, and a worm meshing with the worm wheel is fixedly arranged on the rotating shaft of the second rotating wheel.

[0018] As a further improvement of the above solution, the top surface of the support member is provided with a second slide groove for facilitating the movement of the second slide seat, and the top surface of the support member is also provided with a plurality of second limiting holes penetrating up and down to facilitate limiting the position of the second slide seat.

[0019] As a further improvement of the above solution, the connecting end of the second connecting seat has an "n"-shaped opening, and a locking assembly is provided on one side of the second connecting seat for quick locking with the connecting block of the equatorial plate;

[0020] The locking assembly includes a locking sleeve fixed to one side of the second connecting seat, a locking pin is elastically and movably arranged in the locking sleeve, the locking pin closes the opening of the second connecting seat, and a slope is arranged on the side facing the outside of the opening to facilitate ejecting the locking pin.

[0021] As a further improvement of the above solution, a support plate is provided on the bottom surface of the support member close to the second connecting seat, which can be adjusted up and down, and the support plate can contact the outer surface of the equatorial plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] By means of the first connecting seat, the second connecting seat and the supporting member, two adjacent equatorial plates can be connected together, and by means of the driving assembly, the first connecting seat and the second connecting seat can be driven to move in different directions, so that the position of the corresponding equatorial plate can be adjusted, thereby adjusting the distance between the two equatorial plates and the flatness after assembly, thereby improving the stability and welding quality during the equatorial plate welding process.

[0024] By threading the first screw and the first connecting seat, the first screw is sleeved on the rotating shaft of the first rotating wheel, and the second screw is threadedly connected to the second connecting seat, and the second screw is sleeved on the rotating shaft, it can be achieved that when the first screw slides on the rotating shaft of the first rotating wheel, or the second screw slides on the rotating shaft, the first connecting seat and the second connecting seat are synchronously driven to move together, so that the positions of the two equatorial plates can be quickly adjusted. After adjusting to the appropriate position, the fixing pins can be inserted into the first limiting hole and the second limiting hole between the first sliding seat and the support member, and between the second sliding seat and the support member. At this time, the first rotating wheel or the second rotating wheel is rotated again to achieve fine adjustment of the positions of the first connecting seat and the second connecting seat, thereby ensuring the accurate splicing position of the two equatorial plates, which can not only improve the stability of the equatorial plates during docking and splicing, but also improve the efficiency of splicing.

[0025] By winding the first pull wire around the first guide wheel and the second guide wheel, and the second pull wire around the third guide wheel, and fixing the other end on the rotating shaft of the first rotating wheel and the second rotating wheel, the first pull wire and the second pull wire are wound by the rotation of the first rotating wheel and the second rotating wheel, so that when the position of the first connecting seat and the second connecting seat is quickly adjusted, labor-saving adjustment can be achieved, and the adjustment is more convenient. When adjusting in different directions, it only needs to bypass the guide wheels in different positions, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure when the present invention is used;

[0027] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0028] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 4 for Figure 3 Schematic diagram of the structure in the B direction;

[0030] Figure 5 for Figure 3 Schematic diagram of the structure in the C direction;

[0031] Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at D in the middle;

[0032] Figure 7 for Figure 4 A schematic diagram of the local enlarged structure at E in the middle;

[0033] Figure 8 for Figure 4 Schematic diagram of the structure in the F direction;

[0034] Fig. 9 for Figure 5 Schematic diagram of the cross-sectional structure in the GG direction;

[0035] Fig.10 for Fig. 9 Schematic diagram of the partially enlarged cross-sectional structure at point H in the middle.

[0036] In the figure: 10, first connecting seat; 11, second connecting seat; 111, locking sleeve; 112, locking pin; 113, inclined plane; 12, supporting member; 121, first slide groove; 122, first limiting hole; 123, second slide groove; 124, second limiting hole; 13, first screw rod; 14, second screw rod; 15, first rotating wheel; 16, second rotating wheel; 161, worm; 17, first guide member; 18, second guide member; 19, first slide seat; 20, first guide wheel; 21, second guide wheel; 22, first pull wire; 23, second slide seat; 24, rotating shaft; 241, worm wheel; 25, second pull wire; 26, third guide wheel; 27, supporting plate; 30, equatorial plate. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0038] like Figure 1-10 As shown, the specific scheme of this embodiment is: a spherical tank equatorial plate welding auxiliary device, including a first connecting seat 10 and a second connecting seat 11, the first connecting seat 10 and the second connecting seat 11 are used to connect two adjacent equatorial plates 30 respectively, and can refer to the attached Figure 1As shown, it is arranged between two equatorial plates 30. Specifically, a plurality of connecting blocks are provided on the two equatorial plates 30 for facilitating the connection between the first connecting seat 10 and the second connecting seat 11. The connecting blocks are welded to the outer side of the equatorial plate 30 near the edge of the welding. The connecting end of the second connecting seat 11 has an "n"-shaped opening. The connecting end of the first connecting seat 10 is also provided at the same opening of the second connecting seat 11. A locking assembly is provided on one side of the second connecting seat 11 for facilitating quick locking with the connecting block of the equatorial plate 30. Fig.10 ;

[0039] The locking assembly includes a locking sleeve 111 fixed to one side of the second connecting seat 11, and a locking pin 112 is elastically and movably arranged in the locking sleeve 111. Specifically, a step is arranged on the locking pin 112, and a spring is arranged between the step and the inner wall of the locking sleeve 111 to push the locking pin 112 to move. The locking pin 112 closes the opening of the second connecting seat 11, and a side facing the outside of the opening is provided with an inclined surface 113 that is convenient for pushing out the locking pin 112. Specifically, a guide surface inclined toward the middle position is provided at the opening end of the second connecting seat 11. In this way, when the second connecting seat 11 is connected to the connecting block on the equatorial plate 30, the connecting block can be quickly extended into the opening of the second connecting seat 11, and the spring pushes the locking pin 112 to move and snap into the connecting hole of the connecting block to achieve locking;

[0040] The opening of the first connection seat 10 is provided with a through hole that cooperates with the connection block. After the second connection seat 11 and the connection block are locked, the pins can be inserted into the through holes at the opening of the first connection seat 10 at the same time to fix them to the connection block.

[0041] The first connection seat 10 and the second connection seat 11 are movably connected to the support member 12 respectively. When the second connection seat 11 drives the equatorial plate 30 to move in the horizontal direction of the support member 12, it drives the two adjacent equatorial plates 30 to butt and splice together. When the first connection seat 10 drives the equatorial plate 30 to move in the vertical direction of the support member 12, it drives the two adjacent equatorial plates 30 to adjust the flatness of the splicing. Please refer to the attached Figure 3 As shown, the first connecting seat 10 mainly drives the equatorial plates 30 to adjust in the up and down directions, so that the two equatorial plates 30 can be assembled more smoothly, while the second connecting seat 11 mainly drives the equatorial plates 30 to be assembled horizontally toward the middle, and the support member 12 is also provided with a driving component that drives the first connecting seat 10 and the second connecting seat 11 to move.

[0042] like Figure 3 , 4As shown, as a preferred embodiment of the above embodiment, the driving assembly includes a first screw 13 threadedly connected to the first connecting seat 10, the first screw 13 is transmission-connected to the first rotating wheel 15, the rotating axis of the first rotating wheel 15 is arranged to rotate with the support member 12 along the vertical direction of the support member 12, and the support member 12 is also provided with a first guide member 17 for guiding the first connecting seat 10. Specifically, the first guide member 17 is a guide rod, and the first guide member 17 and the rotating axis of the first rotating wheel 15 are arranged parallel to each other. Therefore, when the first rotating wheel 15 is rotated, the first screw 13 can be driven to rotate, so that the first connecting seat 10 can be adjusted up and down.

[0043] In order to quickly adjust the position where the first connecting seat 10 is connected to the equatorial plate 30, an improvement is made on the basis of the above embodiment. Specifically, the first screw 13 is spline-connected to the rotating shaft of the first rotating wheel 15, and the first screw 13 can move up and down along the rotating shaft of the first rotating wheel 15. Figure 3 As shown, the rotating shaft of the first rotating wheel 15 is set to a hexagonal prism structure, or is connected by a sliding key. The first screw rod 13 is sleeved on the first rotating wheel 15 and can move in the up and down directions on the rotating shaft of the first rotating wheel 15, and can also rotate with the first rotating wheel 15. Therefore, by quickly pushing the first screw rod 13 up and down, the upper and lower positions of the first connecting seat 10 and the installed equatorial plate 30 can be quickly adjusted.

[0044] In order to save more effort when quickly adjusting the positions of the first connecting seat 10 and the equatorial plate 30 up and down, improvements are further made in the above-mentioned embodiment. Specifically, a first slide seat 19 that is rotatably arranged on the first screw rod 13 and is slidably arranged with the first guide member 17, and the first slide seat 19 penetrates the vertical side wall of the support member 12 and is slidably arranged with the support member 12. Specifically, the first slide seat 19 is composed of two parts, one part slides with the first guide member 17, and the other part slides with the support member 12; a second guide wheel 21 and a plurality of first guide wheels 20 are arranged on the support member 12, and a first pull wire 2 is fixedly arranged on the first slide seat 19 2, the first pull wire 22 can pass around the first guide wheel 20 and the second guide wheel 21, and can be fixed on the rotating shaft of the first rotating wheel 15. Specifically, in the present embodiment, two first guide wheels 20 are provided, mainly for changing the pulling of the first slide 19 in different directions. Therefore, in the process of pulling in different directions, the first pull wire 22 can be wound around different first guide wheels 20 to achieve reversal, and the pull wire can be fixed on the rotating shaft of the first rotating wheel 15, so that the first pull wire 22 can be wound by rotating the first rotating wheel 15, thereby pulling the first slide 19 and the first connecting seat 10 to move and realize more labor-saving operation. Please refer to the attached Figure 4 , 8shown.

[0045] The support member 12 is provided with a first slide groove 121 for facilitating the movement of the first slide seat 19, and the support member 12 is also provided with a plurality of first limiting holes 122 close to the first slide groove 121, referring to Figure 7 , by inserting the pins into different first limiting holes 122 to limit the position of the first slide 19, when the first slide 19 is adjusted to a suitable position, the limiting pin can be inserted from the first slide 19 into the first limiting hole 122, so that the first slide 19 and the support member 12 can be fixed to each other. When the first slide 19 and the support member 12 are fixed to each other, it means that the first slide 19 and the first connecting seat 10 are quickly adjusted, and the position of the equatorial plate 30 connected to the first connecting seat 10 is adjusted. At this time, it is only necessary to rotate the first rotating wheel 15, and the first rotating wheel 15 will drive the first screw 13 to rotate, so as to achieve fine adjustment of the first connecting seat 10, so that the position of the equatorial plate 30 can be adjusted appropriately and efficiently;

[0046] It should also be noted that during the quick adjustment process, although the first pull wire 22 is wound by rotating the first rotating wheel 15 to achieve labor-saving operation, the first rotating wheel 15 will also drive the first screw 13 to rotate, so the position of the first connecting seat 10 will also be fine-tuned. However, since the first screw 13 is mounted on the rotating shaft of the first rotating wheel 15 and can move, the activities of the two will not conflict with each other, and the distance driven by the first screw 13 to drive the first connecting seat 10 to move will not be longer than the distance driven by the first connecting seat 10 to move quickly, and will not affect the movement of the first connecting seat 10. During the fine-tuning process, it is only necessary to remove the first pull wire 22 from the first rotating wheel 15.

[0047] The structure of the driving assembly for driving the second connecting seat 11 to move is similar to the structure for driving the first connecting seat 10 to move, and the principle is the same. Specifically, it includes a second screw rod 14 threadedly connected to the second connecting seat 11, the second screw rod 14 is transmission-connected to a second rotating wheel 16, the second rotating wheel 16 and the support member 12 are rotatably connected to each other, and the support member 12 is also provided with a second guide member 18 for guiding the second connecting seat 11, and the second guide member 18 is a polished rod with the same structure as the first guide member 17;

[0048] like Figure 3As shown, a rotating shaft 24 is rotatably provided on the support member 12, the second screw 14 is spline-connected to the rotating shaft 24, and the second screw 14 is sleeved on the rotating shaft 24 for reciprocating movement. When the rotating shaft 24 rotates, the second screw 14 can be driven to rotate synchronously. Therefore, when the position of the second connecting seat 11 and the equatorial plate 30 connected thereto needs to be quickly adjusted, the second screw 14 can be quickly moved on the rotating shaft 24 to achieve the same principle as that of moving the first connecting seat 10;

[0049] A second slide 23 is rotatably provided on the second screw rod 14 and is slidably provided with the second guide member 18. The structure of the second slide 23 is the same as that of the first slide 19. The second slide 23 penetrates the support member 12 upward. A second pull wire 25 is fixedly provided on the top of the second slide 23. In the present embodiment, two second pull wires 25 are provided. The second pull wires 25 can pass around the third guide wheel 26 rotatably provided on the top surface of the support member 12. The other end of the second pull wire 25 can be fixed on the rotating shaft of the second rotating wheel 16. Therefore, when a more labor-saving operation is required, it is only necessary to wind the second pull wire 25 around the rotating shaft of the second rotating wheel 16.

[0050] In addition, a worm wheel 241 is fixedly provided on the rotating shaft 24, and a worm 161 meshing with the worm wheel 241 is fixedly provided on the rotating shaft of the second rotating wheel 16. By providing the worm 161 and the worm wheel 241, after the two equatorial plates 30 are spliced ​​toward the middle, the position of the two equatorial plates 30 can be kept stable through the self-locking of the worm 161 and the worm wheel 241.

[0051] As a preferred embodiment of the above embodiment, the top surface of the support member 12 is provided with a second slide groove 123 for facilitating the movement of the second slide seat 23. The second slide groove 123 is specifically a long strip groove along the side direction of the support member 12. The top surface of the support member 12 is also provided with a plurality of second limiting holes 124 that penetrate up and down to limit the position of the second slide seat 23. Therefore, when the limiting pin is inserted into the second slide seat 23 and the second limiting hole 124 at the same time, the second slide seat 23 can be fixed on the support member 12.

[0052] like Figure 2 , 3As shown, as a preferred mode of the above-mentioned embodiment, the bottom surface of the support member 12 close to the second connecting seat 11 can be adjusted up and down and is provided with a support plate 27, and the support plate 27 can contact the outer surface of the equatorial plate 30. The support plate 27 is provided mainly to support the surface of the equatorial plate 30. Specifically, in order to make the support plate 27 adjustable up and down, a sleeve for mounting the support plate 27 is provided on the support member 12, and a connecting rod is connected to the support plate 27, and the connecting rod can be inserted into the sleeve for extension and contraction, and a locking buckle is provided on the outer side of the sleeve. The structure of the locking buckle can refer to the locking buckle on the camera tripod, and its structure is the prior art and will not be described again.

[0053] The specific working principle of the present invention is as follows: for the tank equatorial plate 30 to be welded, firstly, the locking assembly of the device is fastened to the connecting block of one of the equatorial plates 30, and all the connecting blocks on the equatorial plate 30 are installed on the device, and then the first connecting seat 10 is fixed to the connecting block on the other equatorial plate 30 in sequence;

[0054] After all the connection blocks are installed with the device, the spacing between the two equatorial plates 30 is adjusted by rotating the second rotating wheel 16, and the flatness between the two equatorial plates 30 is adjusted by rotating the first rotating wheel 15. During the adjustment process, the second slide 23 or the first slide 19 can be quickly moved to drive the second connecting seat 11 and the first connecting seat 10 to move quickly, so that the spacing and flatness of the two equatorial plates 30 can be quickly adjusted. During the rapid adjustment process, in order to save effort, the second pull wire 25 and the first pull wire 22 can be wound around the second rotating wheel 16 or the first rotating wheel 15, bypassing different first guide wheels 20 or third guide wheels 26 to change the movement direction of pulling the second slide 23 or the first slide 19, thereby changing the adjustment direction between the two equatorial plates 30;

[0055] After the quick adjustment of the moving direction of the equatorial plate 30 is completed, the second slide 23 and the first slide 19 are fixed in position by inserting the pin into the second limiting hole 124 and the second slide 23 at the same time or inserting the pin into the first slide 19 or the first limiting hole 122. Then, the third guide wheel 26 or the first pull wire 22 can be removed, and then the second rotating wheel 16 or the first rotating wheel 15 can be rotated. At this time, the second screw 14 and the first screw 13 can be driven to rotate, so that the position of the second connecting seat 11 and the first connecting seat 10 can be adjusted in a smaller range of motion to achieve fine adjustment, thereby ensuring that the two equatorial plates 30 are flattened. Finally, the support plate 27 and the surface of the equatorial plate 30 are pressed and supported. Since the second connecting seat 11 and the second screw 14 and the first screw 13 and the first connecting seat 10 are threadedly connected, the two equatorial plates 30 can be kept stable after being flattened to facilitate welding.

[0056] It should be noted that, in this article, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above are only preferred implementations of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A spherical tank equatorial plate welding auxiliary device, characterized in that: It comprises a first connecting seat (10) and a second connecting seat (11), wherein the first connecting seat (10) and the second connecting seat (11) are used to respectively connect two adjacent equatorial plates (30); The first connection seat (10) and the second connection seat (11) are respectively movably connected to the support member (12); when the second connection seat (11) drives the equatorial plate (30) to move in the horizontal direction along the support member (12), it drives two adjacent equatorial plates (30) to butt and splice together; when the first connection seat (10) drives the equatorial plate (30) to move in the vertical direction along the support member (12), it drives the two adjacent equatorial plates (30) to adjust the flatness of the splicing; The support member (12) is also provided with a driving component for driving the first connecting seat (10) and the second connecting seat (11) to move; The driving assembly comprises a first screw rod (13) threadedly connected to the first connecting seat (10), and a second screw rod (14) threadedly connected to the second connecting seat (11); the first screw rod (13) is transmission-connected to the first rotating wheel (15); the rotating shaft of the first rotating wheel (15) is rotationally arranged along the vertical direction of the supporting member (12) and relative to the supporting member (12); the second screw rod (14) is transmission-connected to the second rotating wheel (16); the second rotating wheel (16) and the supporting member (12) are rotationally connected to each other; A first guide member (17) for guiding the first connecting seat (10) and a second guide member (18) for guiding the second connecting seat (11) are also provided on the supporting member (12); The first screw rod (13) is spline-connected to the rotating shaft of the first rotating wheel (15), and the first screw rod (13) can move up and down along the rotating shaft of the first rotating wheel (15); A first slide seat (19) is rotatably arranged on the first screw rod (13) and is slidably arranged with respect to the first guide member (17); the first slide seat (19) penetrates the vertical side wall of the support member (12) and is slidably arranged with respect to the support member (12); A second guide wheel (21) and a plurality of first guide wheels (20) are arranged on the support member (12); a first pull wire (22) is fixedly arranged on the first slide seat (19); the first pull wire (22) can pass through the first guide wheel (20) and the second guide wheel (21), and can be fixed on the rotating shaft of the first rotating wheel (15); A rotating shaft (24) is rotatably provided on the support member (12), the second screw rod (14) and the rotating shaft (24) are spline-connected, and the second screw rod (14) is sleeved on the rotating shaft (24) for reciprocating movement; A second slide seat (23) is rotatably provided on the second screw rod (14) and is slidably provided with the second guide member (18). The second slide seat (23) passes through the support member (12) upward. A second pull wire (25) is fixedly provided on the top of the second slide seat (23). The second pull wire (25) can pass around a third guide wheel (26) rotatably provided on the top surface of the support member (12). The other end of the second pull wire (25) can be fixed on the rotating shaft of the second rotating wheel (16); A worm wheel (241) is fixedly disposed on the rotating shaft (24), and a worm (161) meshing with the worm wheel (241) is fixedly disposed on the rotating shaft of the second rotating wheel (16).

2. The spherical tank equatorial plate welding auxiliary device according to claim 1 is characterized in that: The support member (12) is provided with a first slide groove (121) for facilitating the movement of the first slide seat (19), and the support member (12) is also provided with a plurality of first limiting holes (122) close to the first slide groove (121), and the position of the first slide seat (19) is limited by inserting a latch into different first limiting holes (122).

3. The spherical tank equatorial plate welding auxiliary device according to claim 1 is characterized in that: The top surface of the support member (12) is provided with a second slide groove (123) for facilitating the movement of the second slide seat (23), and the top surface of the support member (12) is also provided with a plurality of second limiting holes (124) penetrating from top to bottom for facilitating limiting the position of the second slide seat (23).

4. A spherical tank equatorial plate welding auxiliary device according to any one of claims 1 to 3, characterized in that: The connecting end of the second connecting seat (11) has an "n"-shaped opening, and a locking assembly is provided on one side of the second connecting seat (11) for facilitating quick locking with a connecting block of the equatorial plate (30); The locking assembly comprises a locking sleeve (111) fixed to one side of the second connecting seat (11), a locking pin (112) being elastically and movably arranged in the locking sleeve (111), the locking pin (112) closing the opening of the second connecting seat (11), and a slope (113) for facilitating the ejection of the locking pin (112) is arranged on a side facing the outside of the opening.

5. A spherical tank equatorial plate welding auxiliary device according to any one of claims 1 to 3, characterized in that: A support plate (27) is provided on the bottom surface of the support member (12) on a side close to the second connection seat (11) and can be adjusted up and down. The support plate (27) can contact the outer surface of the equatorial plate (30).

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