A large steel structure automatic positioning welding processing device

Abstract

The present invention discloses an automatic positioning welding processing device for large steel structural parts, including a welding mechanism, including a table, a fixed plate, a frame, a reciprocating member, a moving member and a welding member, wherein the fixed plate is fixedly connected to the top of the table, the frame is fixedly connected to the top of the fixed plate, the reciprocating member is installed on the surface of the frame, the moving member is installed on the surface of the reciprocating member, and the welding member is installed on the top of the moving member. The present invention can perform transverse welding on steel components through the welding mechanism, and after the single-pass welding is completed, the welding gun is separated from the surface of the steel component during the return process, and the transmission mechanism is used with the cooperation of the roller to complete the single transverse welding return process of the welding gun, so that the steel component can be rotated to a certain angle, and the staff does not need to manually or motor-driven to achieve a certain angle of rotation, and the rotation angle can be adjusted to meet the welding requirements in different situations.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding, in particular to an automatic positioning welding processing device for large steel structure parts. Background Art

[0002] Steel structure is a structure mainly composed of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates. The components or parts are usually connected by welds, bolts or rivets. In the manufacturing and processing of large steel structures, welding is a crucial link. Automatic positioning welding processing equipment is required for the welding processing of large steel structures.

[0003] However, in practical applications, there are still some unresolved problems. The following are some common problems of large steel structure positioning welding processing equipment: When the existing technology is used to weld large steel structures, when it is necessary to perform transverse circumferential uniform welding on the surface of the steel structure, the staff needs to manually or motor-drivenly rotate the steel structure by a certain angle each time it is welded. There are certain errors in manual operation, and manual operation is required each time, which is cumbersome. The motor-driven method requires frequent starting and stopping of the motor, which is very inconvenient, and the rotation angle is not accurate enough, which greatly affects the efficiency of transverse circumferential uniform welding. At the same time, the placement and clamping of the workpiece are not convenient, which further affects the efficiency and difficulty of continuous welding. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above-mentioned and / or existing problems in the existing large-scale steel structure automatic positioning welding processing device, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is how to solve the problem that when uniform transverse circumferential welding is required on the surface of a steel structure, the placement and clamping of the steel structure and workpieces are inconvenient due to the need for manual or motor-driven welding by workers.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic positioning welding processing device for large steel structural parts, comprising: a welding mechanism, including a table, a fixed plate, a frame, a reciprocating member, a moving member and a welding member, wherein the fixed plate is fixedly connected to the top of the table, the frame is fixedly connected to the top of the fixed plate, the reciprocating member is installed on the surface of the frame, the moving member is installed on the surface of the reciprocating member, and the welding member is installed on the top of the moving member; a supporting mechanism is installed on the surface of the table, comprising a transmission member, a supporting plate, a ball, a frame, a roller and a fixing member, the transmission member is installed on the surface of the table, the support plate and the frame are installed on the surface of the transmission member, the ball is rotatably connected to the surface of the support plate, the roller is rotatably connected to the inner wall of the frame, and the fixing member is installed on the surface of the table and the frame; And, a transmission mechanism is installed on the fixed plate and the surface of the frame, including a linkage member, a driving member, a disengagement member, a transmission member and a pull plate, the driving member is installed on the surface of the fixed plate, the linkage member is installed on the surface of the driving member, the disengagement member is installed on the surface of the frame, the transmission member is installed on the surface of the frame and the driving member, the pull plate is installed on the surface of the reciprocating member, the moving member includes a moving plate, a slide groove, a connecting plate, a groove, a clamping column and a first spring, the moving plate is slidably connected to the top of the frame, the slide groove and the groove are both opened in the moving plate, the connecting plate is slidably connected in the slide groove, the clamping column is slidably connected in the groove, the two ends of the first spring are respectively fixedly connected to the inner wall of the groove and the surface of the clamping column, the top of the frame is provided with a ring groove matching the clamping column, and the lower end of the clamping column is slidably connected in the ring groove.

[0008] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the reciprocating part includes a short plate, a servo motor, a reciprocating roller, a skateboard and a sliding rod, the short plate is fixedly connected to the surface of the frame, the servo motor is fixedly connected to the surface of the short plate, the servo motor shaft is fixedly connected to one end of the reciprocating roller, the other end of the reciprocating roller is rotatably connected to the surface of the short plate, the skateboard is slidably connected to the surface of the frame, one end of the sliding rod is fixedly connected to the surface of the skateboard, and the other end of the sliding rod cooperates with the reciprocating roller.

[0009] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the bottom of the connecting plate is fixedly connected to the top of the sliding plate, the welding part is installed on the top of the movable plate, the surface of the clamping column is fixedly connected with a guide block, a guide groove cooperating with the guide block is opened in the groove, and the guide block is slidably connected in the guide groove.

[0010] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the transmission part includes a toothed plate part, a guide part and a second spring, the toothed plate part and the guide part are both installed on the surface of the table, the second spring is installed on the surface of the toothed plate part, the toothed plate part includes a short block, a gear, a first toothed plate, a second toothed plate, a first vertical plate, a second vertical plate and a third toothed plate, the short block is fixedly connected to the inner wall of the table, the gear is rotatably connected to the surface of the short block, the first toothed plate, the second toothed plate and the third toothed plate are meshed on the surface of the gear, the first vertical plate is fixedly connected to the top of the first toothed plate, the second vertical plate is fixedly connected to the top of the second toothed plate, and the tops of the first vertical plate and the second vertical plate are fixedly connected to the bottom of the frame.

[0011] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the guide member includes a first guide plate, a second guide plate, a third guide plate, a first guide rod and a second guide rod, the first guide plate, the second guide plate and the third guide plate are all fixedly connected to the inner wall of the table body, the first tooth plate is slidably connected to the surface of the first guide plate, the second tooth plate is slidably connected to the surface of the second guide plate, the third tooth plate is slidably connected to the surface of the third guide plate, the first guide rod and the second guide rod are fixedly connected to the surface of the table body, the first guide rod and the second guide rod are slidably connected to the first vertical plate and the second vertical plate, the second spring is sleeved on the surface of the third guide plate, the support plate is fixedly connected to the top of the third tooth plate, and the third tooth plate, the first vertical plate and the second vertical plate are slidably connected to the surface of the table body.

[0012] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the fixing part includes an anti-slip part and a linkage part, the anti-slip part is installed on the surface of the frame, the linkage part is installed on the surface of the table, the anti-slip part includes a square rod, a fixed block, a rubber pad, a cross plate and a third spring, the square rod is slidably connected to the surface of the frame, the frame is fixedly connected to the upper end of the square rod, the rubber pad is fixedly connected to the surface of the fixed block, the cross plate is fixedly connected to the lower end of the square rod, the third spring is sleeved on the surface of the square rod, the linkage part includes a movable plate, a fourth spring, a pressure plate and a reinforcement plate, the movable plate is slidably connected to the surface of the table, the fourth spring is sleeved on the surface of the movable plate, the pressure plate is fixedly connected to the top of the movable plate, the reinforcement plate is fixedly connected to the movable plate and the surface of the pressure plate, and the cross plate is slidably connected to the movable plate.

[0013] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the linkage part includes a shell, a movable block, a square block, a fifth spring, a pressure block, a round rod and a T-block, the movable block is slidably connected to the surface of the shell, the square block is slidably connected in the shell and sleeved on the surface of the movable block, the fifth spring is sleeved on the surface of the movable block, the pressure block is fixedly connected to the surface of the shell, the round rod is fixedly connected to the surface of the movable block, the T-block is slidably connected to the surface of the frame, and the bottom of the T-block is fixedly connected to the top of the shell.

[0014] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the driving member includes a rotating cylinder, a cross bar, a guide column, a ratchet member, a sixth spring, an arc groove and a limit block. The rotating cylinder is rotatably connected to the surface of the fixed plate, the cross bar is slidably connected in the rotating cylinder, the guide column is fixedly connected to the surface of the cross bar, the ratchet member is installed on the surface of the rotating cylinder, the sixth spring is sleeved on the surface of the cross bar, the arc groove is opened on the surface of the cross bar, the limit block is fixedly connected to one end of the cross bar, and the shell is fixedly connected to the other end of the cross bar. The ratchet member includes a ratchet, a sleeve, a movable member and a seventh spring. The ratchet is sleeved on the surface of the rotating cylinder, the sleeve is rotatably connected to the ratchet surface, the movable member is rotatably connected in the sleeve, and the two ends of the seventh spring are respectively fixedly connected to the movable member and the sleeve.

[0015] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the transmission member includes a rotating member and a sprocket member, the rotating member includes a cross block 1, a spline cylinder, a first bevel gear, a second bevel gear, a cross block 2, a third bevel gear, a fourth bevel gear and a spline rod, the sprocket member includes a sprocket and a chain, the cross block 1 is fixedly connected to the surface of the fixed plate, the spline cylinder is rotatably connected to the surface of the cross block 1, the first bevel gear is sleeved on the surface of the sleeve, the second bevel gear is fixedly connected to one end of the spline cylinder, the cross block 2 is fixedly connected to the surface of the frame, the spline rod is rotatably connected to the surface of the cross block 2, the third bevel gear is fixedly connected to one end of the spline rod, the fourth bevel gear is fixedly connected to one end of the roller, the spline rod is slidably connected in the spline cylinder, the sprocket is sleeved on the surface of the spline cylinder, and the chain is sleeved on the surface of the sprocket.

[0016] As a preferred solution of the automatic positioning welding processing device for large steel structures described in the present invention, the disengagement part includes a slider, a disengagement block and a fixing bolt, the slider is slidably connected to the surface of the frame, the disengagement block is fixedly connected to the surface of the slider, and the fixing bolt is threadedly connected to the surface of the slider.

[0017] The beneficial effects of the present invention are as follows: the present invention can perform transverse welding on steel components through the welding mechanism, and after the single-pass welding is completed, the welding gun is separated from the surface of the steel component during the return process, and the steel component can be supported and limited by the supporting mechanism, which is convenient enough for placing and clamping the workpiece, and the steel component is supported and fixed by the gravity of the steel component itself. At the same time, it will not rotate easily during welding, and it is convenient to perform rotation adjustment when rotation is required. Through the cooperation of the transmission mechanism and the roller, the welding gun can complete a single transverse welding return process, and the steel component can be rotated to a certain angle, without the need for manual or motor-driven rotation by the staff, and the rotation angle can be adjusted to meet the welding needs in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is a three-dimensional structural diagram of the automatic positioning welding processing device for large steel structures.

[0020] Figure 2 This is a side view of the stereoscopic structure of the automatic positioning welding processing device for large steel structures.

[0021] Figure 3 This is the axonometric structural diagram of the automatic positioning welding processing device for large steel structures.

[0022] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the platform of the automatic positioning welding processing device for large steel structures.

[0023] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the rotating drum of the automatic positioning welding processing device for large steel structures.

[0024] Figure 6 Automatic positioning welding processing device for large steel structures Figure 5 A is an enlarged structural diagram.

[0025] Figure 7 This is a three-dimensional structural diagram of the local structure of the automatic positioning welding processing device for large steel structures.

[0026] Figure 8 This is a cross-sectional structural diagram of the shell of the automatic positioning welding processing device for large steel structures.

[0027] Fig. 9This is a partial cross-sectional three-dimensional structural diagram of the moving plate of the automatic positioning welding processing device for large steel structures.

[0028] Fig.10 Automatic positioning welding processing device for large steel structures Fig. 9 A magnified structural diagram of B.

[0029] Fig.11 This is a three-dimensional structural diagram of the slide bar and slide plate of the automatic positioning welding processing device for large steel structures.

[0030] Fig.12 This is a three-dimensional structural diagram of the disengagement block and round rod of the automatic positioning welding processing device for large steel structures.

[0031] In the figure: 100, welding mechanism; 101, platform; 102, fixed plate; 103, frame; 104, reciprocating member; 105, moving member; 106, welding member; 200, supporting mechanism; 201, transmission member; 202, supporting plate; 203, ball bearing; 204, frame; 205, roller; 206, fixing member; 300, transmission mechanism; 301, linkage member; 302, driving member; 303, disengaging member; 304, transmission member; 305, pulling plate; 104a, short plate; 104b, servo motor; 104c, reciprocating roller; 104d, slide plate; 104e, slide bar; 105a, moving plate; 105b, slide groove; 10 5c, connecting plate; 105d, groove; 105e, clamping column; 105f, first spring; 105g, guide block; 105h, guide groove; 105i, annular groove; 201a, tooth plate member; 201b, guide member; 201c, second spring; 201a-1, short block; 201a-2, gear; 201a-3, first tooth plate; 201a-4, second tooth plate; 201a-5, first vertical plate; 201a-6, second vertical plate; 201a-7, third tooth plate; 201b-1, first guide plate; 201b-2, second guide plate; 201b-3, third guide plate; 201b-4, first guide rod; 201b-5, second Guide rod; 206a, anti-slip part; 206b, linkage; 206a-1, square rod; 206a-2, fixed block; 206a-3, rubber pad; 206a-4, cross plate; 206a-5, third spring; 206b-1, movable plate; 206b-2, fourth spring; 206b-3, pressure plate; 206b-4, reinforcement plate; 301a, housing; 301b, movable block; 301c, square block; 301d, fifth spring; 301e, pressure block; 301f, round rod; 301g, T-block; 302a, rotating drum; 302b, cross rod; 302c, guide column; 302d, ratchet; 302e, sixth spring; 302f, arc groove; 302g, limit block; 302d-1, ratchet; 302d-2, sleeve; 302d-3, movable part; 302d-4, seventh spring; 304a, rotating part; 304b, sprocket part; 304a-1, cross block one; 304a-2, spline cylinder; 304a-3, first bevel gear; 304a-4, second bevel gear; 304a-5, cross block two; 304a-6, third bevel gear; 304a-7, fourth bevel gear; 304a-8, spline rod; 304b-1, sprocket; 304b-2, chain; 303a, slider; 303b, disengagement block; 303c, fixing bolt. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, and provides an automatic positioning welding processing device for large steel structures. The automatic positioning welding processing device for large steel structures includes a welding mechanism 100, a supporting mechanism 200 and a transmission mechanism 300. The welding mechanism 100 can be used to perform transverse welding on steel components, and the supporting mechanism 200 can be used to support and limit the steel components, which is convenient enough for placing and clamping workpieces. Through the transmission mechanism 300, with the cooperation of the roller 205, the welding gun can complete a single transverse welding return process, and the steel component can be rotated by a certain angle.

[0037] Specifically, the welding mechanism 100 includes a table 101, a fixed plate 102, a frame 103, a reciprocating member 104, a movable member 105 and a welding member 106. The fixed plate 102 is fixedly connected to the top of the table 101, the frame 103 is fixedly connected to the top of the fixed plate 102, the reciprocating member 104 is installed on the surface of the frame 103, the movable member 105 is installed on the surface of the reciprocating member 104, and the welding member 106 is installed on the top of the movable member 105.

[0038] There are two fixed plates 102, which support and fix the frame 103. The surface of the frame 103 is provided with a T-shaped guide groove to guide and limit the components installed therein. The operation of the reciprocating member 104 drives the moving member 105 to move back and forth, and then drives the welding member 106 to move back and forth to weld the steel structure. Driven by the reciprocating member 104, the moving member 105 can move in one direction and then move away from the steel structure, and then move in the opposite direction to the initial position, so that the welded member 106 is separated from the steel structure after welding. The welding member 106 is a positioning welding device, which is a prior art and will not be described here.

[0039] Specifically, the supporting mechanism 200 is installed on the surface of the platform 101, and includes a transmission member 201, a support plate 202, a ball bearing 203, a frame 204, a roller 205 and a fixing member 206. The transmission member 201 is installed on the surface of the platform 101, the support plate 202 and the frame 204 are installed on the surface of the transmission member 201, the ball bearing 203 is rotatably connected to the surface of the support plate 202, the roller 205 is rotatably connected to the inner wall of the frame 204, and the fixing member 206 is installed on the surface of the platform 101 and the frame 204.

[0040] The transmission member 201 is driven under the action of the support plate 202 placing the steel member downward, thereby bringing the two frames 204 closer to each other, allowing the roller 205 on the frame 204 to contact the surface of the steel member, and with the cooperation of the support plate 202 and the transmission member 201, the steel member is supported and limited. The ball 203 can make the supported and limited steel member rotate more smoothly. The roller 205 is used to limit the side of the steel member to prevent it from rolling down from the support plate 202, and it can drive the steel structure to rotate when it rotates.

[0041] Specifically, the transmission mechanism 300 is installed on the surface of the fixed plate 102 and the frame 204, and includes a linkage member 301, a driving member 302, a separation member 303, a transmission member 304 and a pull plate 305. The driving member 302 is installed on the surface of the fixed plate 102, the linkage member 301 is installed on the surface of the driving member 302, the separation member 303 is installed on the surface of the frame 103, the transmission member 304 is installed on the surface of the frame 204 and the driving member 302, the pull plate 305 is installed on the surface of the reciprocating member 104, and the moving member 105 includes a moving plate 105a, a slide groove 105b, a connecting plate 105c, Groove 105d, column 105e and first spring 105f, the movable plate 105a is slidably connected to the top of the frame 103, the slide groove 105b and the groove 105d are both opened in the movable plate 105a, the connecting plate 105c is slidably connected in the slide groove 105b, the column 105e is slidably connected in the groove 105d, the two ends of the first spring 105f are respectively fixedly connected to the inner wall of the groove 105d and the surface of the column 105e, and the top of the frame 103 is provided with an annular groove 105i that cooperates with the column 105e, and the lower end of the column 105e is slidably connected in the annular groove 105i.

[0042] When the pulling plate 305 moves to the side of the linkage member 301 along with the moving member 105, the linkage member 301 is moved under the action of the pullback, thereby moving the driving member 302 and rotating the components thereon, so that the transmission member 304 rotates to drive the roller 205 to rotate, thereby rotating the steel component, and after the linkage member 301 contacts it, the linkage member 301 is separated from the pulling plate 305, and will no longer act on the driving member 302, and will be reset under the action of the spring on the driving member 302, and then the moving distance of the linkage member 301 can be controlled according to the setting of the position of the separation member 303, and the rotation angle of the welded steel component can be adjusted each time.

[0043] The shape of the slide groove 105b is T-shaped, and the upper end of the connecting plate 105c is T-shaped and adapted to the slide groove 105b, so that the movable plate 105a will not separate from the connecting plate 105c, and the lower end of the clamping column 105e extends into the annular groove 105i. Through the action of the first spring 105f, the lower end of the clamping column 105e can better contact with the bottom of the annular groove 105i under the action of its elastic force.

[0044] The two sides of the annular groove 105i are flat to inclined. When the clamping column 105e moves to the two sides, it falls vertically. During welding, when the slide plate 104d drives the connecting plate 105c to move back and forth, the clamping column 105e will not return along the original path, but will only move in one direction along the annular groove 105i, so that the movable plate 105a can move backward and forward partly on both sides, so that the welded part 106 can be separated from or contacted with the steel structure.

[0045] When it is necessary to weld reinforcing ribs or fins on the surface of the workpiece, after each rotation of the workpiece, the staff can set up an additional mechanism to hold the object, or use manual holding. This part is not shown in the figure, and technical personnel in this field can set it as needed.

[0046] Example 2

[0047] Reference Figure 2 to Figure 9 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0048] Specifically, the reciprocating member 104 includes a short plate 104a, a servo motor 104b, a reciprocating roller 104c, a slide plate 104d and a slide bar 104e. The short plate 104a is fixedly connected to the surface of the frame 103, the servo motor 104b is fixedly connected to the surface of the short plate 104a, the rotating shaft of the servo motor 104b is fixedly connected to one end of the reciprocating roller 104c, the other end of the reciprocating roller 104c is rotatably connected to the surface of the short plate 104a, the slide plate 104d is slidably connected to the surface of the frame 103, one end of the slide bar 104e is fixedly connected to the surface of the slide plate 104d, the other end of the slide bar 104e cooperates with the reciprocating roller 104c, and the pull plate 305 is fixedly connected to the bottom of the slide plate 104d.

[0049] There are two short plates 104a, a servo motor 104b is fixed on the surface thereof, one end of another reciprocating roller 104c is installed on the surface thereof through a bearing, a reciprocating groove is provided on the surface of the reciprocating roller 104c, one end of a slide bar 104e extends into the reciprocating groove, the reciprocating roller 104c is driven to rotate by the operation of the servo motor 104b, and under the action of the guide limit of the slide plate 104d, the reciprocating roller 104c rotates to drive the slide bar 104e and the slide plate 104d to reciprocate.

[0050] The bottom of the connecting plate 105c is fixedly connected to the top of the slide plate 104d, the welding part 106 is installed on the top of the movable plate 105a, the surface of the clamping column 105e is fixedly connected with the guide block 105g, and the groove 105d is provided with a guide groove 105h that cooperates with the guide block 105g, and the guide block 105g is slidably connected in the guide groove 105h.

[0051] The clamping column 105e is guided and limited by the guide block 105g and the guide groove 105h so that it will not rotate relative to the moving plate 105a and will not separate from the moving plate 105a.

[0052] The transmission member 201 includes a toothed plate member 201a, a guide member 201b and a second spring 201c. The toothed plate member 201a and the guide member 201b are both mounted on the surface of the platform 101. The second spring 201c is mounted on the surface of the toothed plate member 201a. The toothed plate member 201a includes a short block 201a-1, a gear 201a-2, a first toothed plate 201a-3, a second toothed plate 201a-4, a first vertical plate 201a-5, a second vertical plate 201a-6 and a third toothed plate 201a-7. The short block 201a-1 is fixed to the Connected to the inner wall of the platform 101, the gear 201a-2 is rotatably connected to the surface of the short block 201a-1, the first tooth plate 201a-3, the second tooth plate 201a-4 and the third tooth plate 201a-7 are meshed on the surface of the gear 201a-2, the first vertical plate 201a-5 is fixedly connected to the top of the first tooth plate 201a-3, the second vertical plate 201a-6 is fixedly connected to the top of the second tooth plate 201a-4, and the tops of the first vertical plate 201a-5 and the second vertical plate 201a-6 are fixedly connected to the bottom of the frame 204.

[0053] There are two short plates 104a, and the gear 201a-2 is installed on the surfaces of the two short plates 104a through bearings. The first tooth plate 201a-3 is indirectly connected to the frame 204 through the first vertical plate 201a-5 and the second vertical plate 201a-6, and the second tooth plate 201a-4 is indirectly connected to the frame 204. By placing the steel structure to be welded on the support plate 202, the support plate 202 and the third tooth plate 201a-7 are moved downward, thereby driving the gear 201a-2 to rotate, so that the first tooth plate 201a-3 and the second tooth plate 201a-4 move toward each other, and the first vertical plate 201a-5 and the second vertical plate 201a-6 move toward each other, so that the two frames 204 are close to the steel structure to make the roller 205 contact with its surface, thereby supporting and limiting the steel structure.

[0054] When the steel component to be welded is placed on the support plate 202 through the second spring 201c, the third tooth plate 201a-7 moves down to compress it. When the steel component is separated from the support plate 202 after welding, the support plate 202 and the third tooth plate 201a-7 are reset.

[0055] The guide member 201b includes a first guide plate 201b-1, a second guide plate 201b-2, a third guide plate 201b-3, a first guide rod 201b-4 and a second guide rod 201b-5. The first guide plate 201b-1, the second guide plate 201b-2 and the third guide plate 201b-3 are all fixedly connected to the inner wall of the platform 101. The first tooth plate 201a-3 is slidably connected to the surface of the first guide plate 201b-1, the second tooth plate 201a-4 is slidably connected to the surface of the second guide plate 201b-2, and the third tooth plate 201a-7 is slidably connected to the surface of the third guide plate 201b-5. The first guide rod 201b-4 and the second guide rod 201b-5 are fixedly connected to the surface of the platform 101, the first guide rod 201b-4 and the second guide rod 201b-5 are slidably connected to the first vertical plate 201a-5 and the second vertical plate 201a-6, the second spring 201c is sleeved on the surface of the third guide plate 201b-3, the support plate 202 is fixedly connected to the top of the third tooth plate 201a-7, the third tooth plate 201a-7, the first vertical plate 201a-5 and the second vertical plate 201a-6 are slidably connected to the surface of the platform 101.

[0056] The first guide plate 201b-1, the second guide plate 201b-2 and the third guide plate 201b-3 are used to guide and limit the corresponding first tooth plate 201a-3, the second tooth plate 201a-4 and the third tooth plate 201a-7 respectively, so that they can only move along the direction of the guide plate. The first guide rod 201b-4 and the second guide rod 201b-5 are used to guide and limit the first vertical plate 201a-5 and the second vertical plate 201a-6, and at the same time their force is increased, so that the roller 205 on the frame 204 can better contact with the steel structure to be welded.

[0057] The fixing member 206 includes an anti-slip member 206a and a linkage member 206b. The anti-slip member 206a is installed on the surface of the frame 204, and the linkage member 206b is installed on the surface of the platform 101. The anti-slip member 206a includes a square rod 206a-1, a fixing block 206a-2, a rubber pad 206a-3, a cross plate 206a-4 and a third spring 206a-5. The square rod 206a-1 is slidably connected to the surface of the frame 204, and the frame 204 is fixedly connected to the upper end of the square rod 206a-1. The rubber pad 206a-3 is fixedly connected to the surface of the fixing block 206a-2, and the cross plate 206a-4 is fixedly connected to the square rod 206a- 1, the third spring 206a-5 is sleeved on the surface of the square rod 206a-1, the linkage 206b includes a movable plate 206b-1, a fourth spring 206b-2, a pressure plate 206b-3 and a reinforcement plate 206b-4, the movable plate 206b-1 is slidably connected to the surface of the platform 101, the fourth spring 206b-2 is sleeved on the surface of the movable plate 206b-1, the pressure plate 206b-3 is fixedly connected to the top of the movable plate 206b-1, the reinforcement plate 206b-4 is fixedly connected to the movable plate 206b-1 and the surface of the pressure plate 206b-3, and the transverse plate 206a-4 is slidably connected to the movable plate 206b-1.

[0058] The anti-slip part 206a plays a role in preventing the steel component from rotating when it is not necessary to rotate during welding. When it is necessary to rotate and adjust the position during welding, the rubber pad 206a-3 on the anti-slip part 206a is separated from the surface of the steel component through the linkage part 206b, and then the steel component is rotated under the rotation of the roller 205.

[0059] One end of the square rod 206a-1 passes through the frame 204, and the fixed block 206a-2 is guided and supported by the square rod 206a-1. When the steel component is placed on the support plate 202 and the roller 205, the rubber pad 206a-3 contacts the surface of the steel component. Under the action of the friction between them, the steel component will not rotate easily. One end of the cross plate 206a-4 passes through the movable plate 206b-1, and the square rod 206a-1 and the movable plate 206b-1 are indirectly connected through the cross plate 206a-4. At the same time, when the frame 204 drives the square rod 206a-1 and the cross plate 206a-4 to move forward and backward, the movable plate 206b-1 will not hinder their movement, and when the movable plate 206b-1 moves up and down to drive the cross plate 206a-4 and the square rod 206a-1 to move, the frame 204 will not hinder their movement.

[0060] The two ends of the third spring 206a-5 are fixedly connected to the surface of the frame 204 and the cross plate 206a-4 respectively, and the two ends of the fourth spring 206b-2 are fixedly connected to the surface of the platform 101 and the movable plate 206b-1 respectively. The third spring 206a-5 and the fourth spring 206b-2 provide power for the resetting of the cross plate 206a-4 and the movable plate 206b-1 under the action of compression and rebound. The extrusion pressing plate 206b-3 is moved downward by the linkage 301, which can drive the cross plate 206a-4, the square rod 206a-1 and the fixed block 206a-2 to move downward, so that the rubber pad 206a-3 can be separated from the surface of the steel component, making it convenient for the roller 205 to drive the welded steel component to rotate.

[0061] Example 3

[0062] Reference Figure 5 to Figure 12 , which is the third embodiment of the present invention, and is based on the first two embodiments.

[0063] Specifically, the linkage 301 includes a shell 301a, a movable block 301b, a block 301c, a fifth spring 301d, a pressure block 301e, a round rod 301f and a T-block 301g. The movable block 301b is slidably connected to the surface of the shell 301a, the block 301c is slidably connected in the shell 301a and sleeved on the surface of the movable block 301b, the fifth spring 301d is sleeved on the surface of the movable block 301b, the pressure block 301e is fixedly connected to the surface of the shell 301a, the round rod 301f is fixedly connected to the surface of the movable block 301b, the T-block 301g is slidably connected to the surface of the frame 103, and the bottom of the T-block 301g is fixedly connected to the top of the shell 301a.

[0064] One end of the movable block 301b and the pull plate 305 are both provided with an inclined surface. When the pull plate 305 moves to contact with the movable block 301b, it is squeezed to make the movable block 301b and the square block 301c move, and the fifth spring 301d is compressed, so that the pull plate 305 moves to the side of the movable block 301b that is not inclined. Then, under the action of the pull plate 305 pulling back, the movable block 301b, the shell 301a, the round rod 301f and the pressure block 301e can move with it, thereby moving the cross bar 302b.

[0065] The movement of the pressing block 301e squeezes the pressing plate 206b-3 to move it downward, and the fifth spring 301d provides power for the movable block 301b to return to its original position after moving downward. The T-block 301g guides and limits the movement of the shell 301a, so that the round rod 301f can only move but not rotate.

[0066] The driving member 302 includes a rotating cylinder 302a, a cross bar 302b, a guide post 302c, a ratchet member 302d, a sixth spring 302e, an arc groove 302f and a stop block 302g. The rotating cylinder 302a is rotatably connected to the surface of the fixed plate 102, the cross bar 302b is slidably connected to the rotating cylinder 302a, the guide post 302c is fixedly connected to the surface of the cross bar 302b, the ratchet member 302d is installed on the surface of the rotating cylinder 302a, the sixth spring 302e is sleeved on the surface of the cross bar 302b, the arc groove 302f is opened on the surface of the cross bar 302b, and the stop block 302g is fixed. The housing 301a is fixedly connected to one end of the cross bar 302b, and the housing 301a is fixedly connected to the other end of the cross bar 302b. The ratchet member 302d includes a ratchet 302d-1, a housing 302d-2, a movable member 302d-3 and a seventh spring 302d-4. The ratchet 302d-1 is sleeved on the surface of the rotating cylinder 302a, the housing 302d-2 is rotatably connected to the surface of the ratchet 302d-1, the movable member 302d-3 is rotatably connected in the housing 302d-2, and both ends of the seventh spring 302d-4 are fixedly connected to the movable member 302d-3 and the housing 302d-2 respectively.

[0067] One end of the guide column 302c extends into the arc groove 302f. When the cross bar 302b moves toward the rotating drum 302a, the rotating drum 302a rotates in the opposite direction under the action of the arc groove 302f, thereby causing the ratchet 302d-1 to rotate in the opposite direction. Through the sixth spring 302e, it is compressed in the process of the housing 301a driving the cross bar 302b to move.

[0068] When the pull plate 305 is separated from the movable block 301b, the shell 301a and the round rod 301f are reset under the action of its elastic force. According to the specific situation, the shell 301a can be reset manually or by a motor, and is not limited to the reset by the spring rebound. The sixth spring 302e can also have the elastic force to reset the shell 301a with a small compression amount. The limit block 302g limits the cross bar 302b, so that the shell 301a will not separate from the rotating drum 302a when it is reset. At the same time, a buffer is installed on the surface of the limit block 302g. When the sixth spring 302e rebounds and drives the cross bar 302b and the limit block 302g to move, it plays a role of buffering between the limit block 302g and the rotating drum 302a to avoid hitting the rotating drum 302a and damaging it.

[0069] Through the movable part 302d-3 and the seventh spring 302d-4, the housing 302d-2 can be driven to rotate in the opposite direction when the ratchet 302d-1 rotates in the opposite direction, and will not be driven to rotate in the forward direction when the housing 302d-2 rotates in the opposite direction. At the same time, the ratchet 302d-1 cannot be driven to rotate in the opposite direction when the housing 302d-2 rotates in the opposite direction, and can be driven to rotate in the forward direction.

[0070] The transmission member 304 includes a rotating member 304a and a sprocket member 304b. The rotating member 304a includes a cross block 1 304a-1, a spline cylinder 304a-2, a first bevel gear 304a-3, a second bevel gear 304a-4, a cross block 2 304a-5, a third bevel gear 304a-6, a fourth bevel gear 304a-7 and a spline rod 304a-8. The sprocket member 304b includes a sprocket 304b-1 and a chain 304b-2. The cross block 1 304a-1 is fixedly connected to the surface of the fixed plate 102, the spline cylinder 304a-2 is rotatably connected to the surface of the cross block 1 304a-1, and the first bevel gear 304a-3 is sleeved. On the surface of the sleeve 302d-2, the second bevel gear 304a-4 is fixedly connected to one end of the spline cylinder 304a-2, the cross block 304a-5 is fixedly connected to the surface of the frame 204, the spline rod 304a-8 is rotatably connected to the surface of the cross block 304a-5, the third bevel gear 304a-6 is fixedly connected to one end of the spline rod 304a-8, the fourth bevel gear 304a-7 is fixedly connected to one end of the roller 205, the spline rod 304a-8 is slidably connected in the spline cylinder 304a-2, the sprocket 304b-1 is sleeved on the surface of the spline cylinder 304a-2, and the chain 304b-2 is sleeved on the surface of the sprocket 304b-1.

[0071] The spline cylinder 304a-2 can be driven to rotate by the rotation of the sleeve 302d-2 through the first bevel gear 304a-3 and the second bevel gear 304a-4. When the spline rod 304a-8 moves with the frame 204 through the spline cylinder 304a-2, the spline rod 304a-8 will not separate from the spline cylinder 304a-2, and the spline rod 304a-8 can be rotated under the action of the rotation of the spline cylinder 304a-2.

[0072] Through the third bevel gear 304a-6 and the fourth bevel gear 304a-7, the roller 205 can be rotated under the rotation of the spline rod 304a-8, thereby driving the steel component to rotate. Through the sprocket 304b-1 and the chain 304b-2, one spline cylinder 304a-2 can be driven to rotate the other spline cylinder 304a-2, thereby causing the rollers 205 on the two frames 204 to rotate simultaneously. When the welding gun completes a single transverse welding and returns to its original position, the steel component can be rotated by a certain angle, and the rotation angle can be adjusted.

[0073] The disengagement member 303 includes a slider 303a, a disengagement block 303b and a fixing bolt 303c. The slider 303a is slidably connected to the surface of the frame 103, the disengagement block 303b is fixedly connected to the surface of the slider 303a, and the fixing bolt 303c is threadedly connected to the surface of the slider 303a.

[0074] The slider 303a can be moved on the frame 103 to adjust the position of the disengagement block 303b. The slider 303a is fixed by the fixing bolt 303c to fix the disengagement block 303b.

[0075] When the pull plate 305 pulls the linkage member 301 to move through the disengagement block 303b, when the round rod 301f contacts it, the round rod 301f is squeezed to make the round rod 301f and the movable block 301b move downward, so that the movable block 301b is separated from the pull plate 305, and the linkage member 301 no longer moves with the pull plate 305. Then, the pulling position of the linkage member 301 can be adjusted according to the position of the disengagement block 303b, and the number of circles of the rotating drum 302a driven by the movement of the cross bar 302b can be adjusted, thereby adjusting the rotation angle of the steel component.

[0076] When in use, the device of the present invention has three states. The first working state is that the steel structure is uniformly welded during transverse welding. The steel structure is placed on the support plate 202. Under the action of the support plate 202 pressing down, the support plate 202 and the third tooth plate 201a-7 move downward, thereby rotating the gear 201a-2, causing the first tooth plate 201a-3 and the second tooth plate 201a-4 to move toward each other, causing the first vertical plate 201a-5 and the second vertical plate 201a-6 to move toward each other, causing the two frames 204 to approach the steel structure to contact the roller 205 with its surface, thereby supporting and limiting the steel structure, and compressing the second spring 201c.

[0077] When the steel component is placed on the support plate 202 and the roller 205, the rubber pad 206a-3 contacts the surface of the steel component. Under the action of the friction between them, the steel component will not rotate easily. The operation of the servo motor 104b is controlled to drive the reciprocating roller 104c to rotate. Under the action of the guide limit of the slide plate 104d, the reciprocating roller 104c rotates to drive the slide bar 104e, the slide plate 104d, the moving plate 105a, the welding part 106 and the pulling plate 305 to move. Under the action of the movement of the welding part 106, the steel component is welded uniformly in the transverse direction.

[0078] The second working state is that when the welding gun completes a single transverse welding and returns, the steel component can be rotated to a certain angle, and the rotation angle can be adjusted, so that the steel component can be uniformly welded transversely. After a single transverse welding is completed, the steel component can be rotated to a certain angle during the return of the weldment 106, and the rotation angle can be adjusted by the position of the disengagement block 303b. After the moving slider 303a drives the disengagement block 303b to move and adjust, the fixing bolt 303c is rotated to make it in close contact with the surface of the frame 103, and the slider 303a and the disengagement block 303b are fixed.

[0079] When the pulling plate 305 moves with the slider 303a, it contacts with the movable block 301b and squeezes it, so that the movable block 301b, the block 301c and the round rod 301f move downward, and the fifth spring 301d is compressed. When the pulling plate 305 is moved to the non-inclined side of the movable block 301b, the movable block 301b, the block 301c and the round rod 301f are reset. With the drive of the servo motor 104b and the action of the annular groove 105i, the movable plate 105a and the welding part 106 move backward and reset along the direction of the annular groove 105i, so that the slide plate 104d and the pulling plate 305 move back.

[0080] Then, under the action of the pull plate 305 pulling back, the movable block 301b, the shell 301a, the round rod 301f and the pressure block 301e can move together with it, and then the cross bar 302b can be moved. The movement of the pressure block 301e squeezes the pressure plate 206b-3 to move it downward, and then the cross plate 206a-4, the square rod 206a-1 and the fixed block 206a-2 can be moved downward, so that the rubber pad 206a-3 can be separated from the surface of the steel structure. The movement of the shell 301a drives the cross bar 302b to move. When the cross bar 302b moves toward the rotating drum 302a, the rotating drum 302a is rotated in the opposite direction under the action of the arc groove 302f, and then the ratchet 302d-1 is rotated in the opposite direction.

[0081] The sixth spring 302e is compressed during the movement, and the rotation of the ratchet 302d-1 causes the sleeve 302d-2 to rotate. The spring causes the roller 205 to rotate under the transmission action of the transmission member 304, and then the steel component is rotated. When the round rod 301f contacts the disengagement block 303b, the round rod 301f is squeezed, so that the round rod 301f and the movable block 301b move downward, so that the movable block 301b is separated from the pull plate 305, and the linkage member 301 no longer runs with the pull plate 305. Under the action of the sixth spring 302e, the linkage member 301 is reset, and under the action of the third spring 206a-5 and the fourth spring 206b-2, the fixed block 206a-2, the rubber pad 206a-3 and the pressure plate 206b-3 are reset. When the welding member 106 returns to the initial position, the steel component can be welded again after being rotated a certain angle, and intermittent rotation and horizontal uniform welding are performed in sequence.

[0082] The third state is that circular welding can be directly performed on the steel component. The pressure plate 206b-3 can be moved downward by applying pressure manually to separate the rubber pad 206a-3 from the surface of the steel component, and the welding piece 106 can be adjusted to the required position for welding. The steel component can be manually rotated for circular welding. The separation piece 303 can also be moved to the side, and the pressure block 301e on the shell 301a can be moved to press down the pressure plate 206b-3 under the action of the pulling plate 305 to separate the rubber pad 206a-3 from the surface of the steel component. The welding piece 106 can be moved to the required position and the gun head can be brought into contact with the surface of the steel component. Then, the steel component can be manually rotated for circular welding.

[0083] In summary, by the reciprocating movement of the clamping column 105 in the annular groove 105i, the welding gun on the welding piece 106 contacts the surface of the steel component for one-way welding, moves away, and then resets. Compared with the prior art, it is only necessary to adjust the position when starting welding, and there is no need to electrically control the extension and shortening of the welding gun every time when starting and completing welding. The transmission mechanism 300 is driven to operate during the resetting process of the welding gun, and with the cooperation of the roller 205, the steel component can be rotated a certain angle. Compared with the prior art, there is no need for staff to achieve a certain angle of rotation manually or by motor drive, and the rotation angle can be adjusted to meet welding needs in different situations.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic positioning welding processing device for large steel structures, characterized in that: include: The welding mechanism comprises a table, a fixed plate, a frame, a reciprocating member, a moving member and a welding member, wherein the fixed plate is fixedly connected to the top of the table, the frame is fixedly connected to the top of the fixed plate, the reciprocating member is mounted on the surface of the frame, the moving member is mounted on the surface of the reciprocating member, the welding member is mounted on the top of the moving member, and the reciprocating member can drive the moving member to move in a direction away from the steel member after moving in one direction, and then move in the opposite direction to the initial position; The supporting mechanism is installed on the surface of the table, and includes a transmission member, a support plate, a frame, a roller and a fixing member. The support plate is located between the two frames, the transmission member is installed on the surface of the table, the support plate and the frame are installed on the surface of the transmission member, the roller is rotatably connected to the inner wall of the frame, the fixing member is installed on the surface of the table and the frame, the fixing member includes an anti-slip member and a linkage member, the anti-slip member is installed on the surface of the frame, and the linkage member is installed on the surface of the table; as well as, The transmission mechanism is installed on the fixed plate and the surface of the frame, and includes a linkage member, a driving member, a disengaging member, a transmission member and a pulling plate. The reciprocating member includes a slide plate. The pulling plate is fixedly connected to the bottom of the slide plate. The pulling plate is used to make the linkage member slide on the surface of the frame. The driving member is installed on the surface of the fixed plate. The driving member is used to rotate the transmission member. The linkage member is installed on one side of the driving member. The linkage member is used to move the driving member. The linkage member is also used to separate the anti-slip member from the surface of the steel member through the linkage member. The disengaging member can be adjusted to be installed on the surface of the frame to separate the linkage member from the pulling plate. The transmission member is installed on the surface of the frame and the driving member. The transmission member is used to rotate the roller. The movable part includes a movable plate, a slide groove, a connecting plate, a groove, a clamping column and a first spring, the movable plate is slidably connected to the top of the frame, the slide groove and the groove are both opened in the movable plate, the connecting plate is slidably connected in the slide groove, the bottom of the connecting plate is fixedly connected to the top of the sliding plate, the clamping column is slidably connected in the groove, the two ends of the first spring are respectively fixedly connected to the inner wall of the groove and the surface of the clamping column, an annular groove matching with the clamping column is opened on the top of the frame, the lower end of the clamping column is slidably connected in the annular groove, and when the clamping column moves to both sides of the annular groove, the movable plate can move forward or backward, which correspondingly makes the welded parts contact or detach from the steel structure.

2. The automatic positioning welding processing device for large steel structures according to claim 1 is characterized in that: The reciprocating part also includes a short plate, a servo motor, a reciprocating roller and a sliding rod. The short plate is fixedly connected to the surface of the frame, the servo motor is fixedly connected to the surface of the short plate, the rotating shaft of the servo motor is fixedly connected to one end of the reciprocating roller, the other end of the reciprocating roller is rotatably connected to the surface of the short plate, the skateboard is slidably connected to the surface of the frame, one end of the sliding rod is fixedly connected to the surface of the skateboard, and the other end of the sliding rod cooperates with the reciprocating roller.

3. The automatic positioning welding processing device for large steel structures according to claim 2 is characterized in that: The welding piece is installed on the top of the moving plate, a guide block is fixedly connected to the surface of the clamping column, a guide groove matched with the guide block is opened in the groove, and the guide block is slidably connected in the guide groove.

4. The automatic positioning welding processing device for large steel structures according to claim 1 is characterized in that: The transmission member includes a toothed plate member and a guide member, and the toothed plate member and the guide member are both installed on the table body, the toothed plate member includes a short block, a gear, a first toothed plate, a second toothed plate, a first vertical plate, a second vertical plate and a third toothed plate, the short block is fixedly connected to the inner wall of the table body, the gear is rotatably connected to the surface of the short block, the first toothed plate, the second toothed plate and the third toothed plate are meshed on the surface of the gear, the support plate is fixedly connected to the top of the third toothed plate, the first vertical plate is fixedly connected to the top of the first toothed plate, the second vertical plate is fixedly connected to the top of the second toothed plate, the tops of the first vertical plate and the second vertical plate are respectively fixedly connected to the bottoms of the two frames, the third toothed plate, the first vertical plate and the second vertical plate are slidably connected to the surface of the table body, and the support mechanism also includes a ball, and the ball is rotatably connected to the surface of the support plate.

5. The automatic positioning welding processing device for large steel structures according to claim 4 is characterized in that: The guide member includes a first guide plate, a second guide plate, a third guide plate, a first guide rod and a second guide rod, the first guide plate, the second guide plate and the third guide plate are all fixedly connected to the inner wall of the table, the first tooth plate is slidably connected to the surface of the first guide plate, the second tooth plate is slidably connected to the surface of the second guide plate, the third tooth plate is slidably connected to the surface of the third guide plate, the first guide rod and the second guide rod are fixedly connected to the surface of the table, the first guide rod and the second guide rod are slidably connected to the first vertical plate and the second vertical plate, and the transmission member also includes a second spring, and the second spring is sleeved on the surface of the third guide plate.

6. The automatic positioning welding processing device for large steel structures according to claim 1 is characterized in that: The anti-slip part includes a square rod, a fixed block, a rubber pad, a cross plate and a third spring. The square rod is slidably connected to the surface of the frame. One end of the square rod passes through the frame. The fixed block is guided and supported by the square rod. The rubber pad is fixedly connected to the surface of the fixed block. The cross plate is fixedly connected to the lower end of the square rod. The third spring is sleeved on the surface of the square rod. The linkage part includes a movable plate, a fourth spring, a pressure plate and a reinforcement plate. The movable plate is slidably connected to the surface of the platform. The fourth spring is sleeved on the surface of the movable plate. The pressure plate is fixedly connected to the top of the movable plate. The reinforcement plate is fixedly connected to the movable plate and the surface of the pressure plate. The cross plate is slidably connected to the movable plate.

7. The automatic positioning welding processing device for large steel structures according to claim 6, characterized in that: The linkage part includes a shell, a movable block, a square block, a fifth spring, a pressure block, a round rod and a T-block. The movable block is slidably connected to the surface of the shell, the square block is slidably connected in the shell and sleeved on the surface of the movable block, the fifth spring is sleeved on the surface of the movable block, the pressure block is fixedly connected to the surface of the shell, the round rod is fixedly connected to the surface of the movable block, the T-block is slidably connected to the surface of the frame, and the bottom of the T-block is fixedly connected to the top of the shell. When the pressure block moves, it can squeeze the pressure plate to move it downward; one end of the movable block and the pull plate are both provided with an inclined surface.

8. The automatic positioning welding processing device for large steel structures as claimed in claim 7, characterized in that: The driving member includes a rotating cylinder, a cross bar, a guide column, a ratchet member, a sixth spring, an arc groove and a limit block. The rotating cylinder is rotatably connected to the surface of the fixed plate, the cross bar is slidably connected in the rotating cylinder, the guide column is fixedly connected to the surface of the cross bar, the ratchet member is installed on the surface of the rotating cylinder, the sixth spring is sleeved on the surface of the cross bar, the arc groove is opened on the surface of the cross bar, the limit block is fixedly connected to one end of the cross bar, and the shell is fixedly connected to the other end of the cross bar. The ratchet member includes a ratchet, a sleeve, a movable member and a seventh spring. The ratchet is sleeved on the surface of the rotating cylinder, the sleeve is rotatably connected to the surface of the ratchet, the movable member is rotatably connected in the sleeve, and both ends of the seventh spring are respectively fixedly connected to the movable member and the sleeve.

9. The automatic positioning welding processing device for large steel structures according to claim 8, characterized in that: The transmission member includes a rotating member and a sprocket member, the rotating member includes a cross block 1, a spline cylinder, a first bevel gear, a second bevel gear, a cross block 2, a third bevel gear, a fourth bevel gear and a spline rod, the sprocket member includes a sprocket and a chain, the cross block 1 is fixedly connected to the surface of the fixed plate, the spline cylinder is rotatably connected to the surface of the cross block 1, the first bevel gear is sleeved on the surface of the casing, the second bevel gear is fixedly connected to one end of the spline cylinder, the cross block 2 is fixedly connected to the surface of the frame, the spline rod is rotatably connected to the surface of the cross block 2, the third bevel gear is fixedly connected to one end of the spline rod, the fourth bevel gear is fixedly connected to one end of the roller, the spline rod is slidably connected in the spline cylinder, the sprocket is sleeved on the surface of the spline cylinder, and the chain is sleeved on the surface of the sprocket.

10. The automatic positioning welding processing device for large steel structures according to claim 7, characterized in that: The disengagement member includes a slider, a disengagement block and a fixing bolt. The slider is slidably connected to the surface of the frame, the disengagement block is fixedly connected to the surface of the slider, and the fixing bolt is threadedly connected to the surface of the slider. When the disengagement block contacts the round rod, the movable block can be separated from the pull plate.

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