A fully automatic welding device for the upper ear plate of the tower crane attachment frame

Abstract

The invention discloses a fully automatic welding device for ear plates on an attachment frame of a tower crane, comprising an attachment frame conveying mechanism, an ear plate swinging mechanism, a welding mechanism and an attachment frame docking mechanism. The attachment frame conveying mechanism is divided into two paths, and the two attachment frame conveying mechanisms are arranged side by side. An ear plate swinging mechanism is arranged between the two attachment frame conveying mechanisms, and the ear plate is swung on the end of the attachment frame through the ear plate swinging mechanism. Welding mechanisms are arranged on both sides of the ear plate swinging mechanism, and the ear plate and the attachment frame are welded through the welding mechanism. Attachment frame docking mechanisms are arranged on the inner side and the outer side of the attachment frame conveying mechanism, and the two attachment frames are docked through the attachment frame docking mechanism. The automatic welding of the ear plate and the attachment frame is realized, thereby reducing the labor intensity of the staff and improving the welding efficiency, and no manual swinging is required.

Description

Technical Field

[0001] The invention relates to the field of tower crane auxiliary equipment processing equipment, and in particular to a full-automatic welding device for an upper ear plate of an attached frame of a tower crane. Background Art

[0002] When the standard section is installed, in order to increase the stability of the standard section (that is, to increase the fixing points of the standard section and the wall and reduce the torque of the standard section), the connection between the wall and the standard section is mainly connected through the attachment rod and the attachment frame. The attachment frame is installed on the outer wall of the standard section, and the attachment rod is fixed on the outer wall of the wall. The standard section is fixed by connecting the attachment rod and the attachment frame; the attachment frame is formed by docking two door-type frames. When assembling, the attachment frame clamps the standard section and fixes it to the outer wall of the wall through the attachment rod. Since the door-type frames need to be docked, It is necessary to set connecting ear plates, and realize the connection of the door-type frame through two connecting ear plates. The fixing accuracy of the ear plates of the door-type frame is relatively high. It is necessary to ensure that when the door-type frame is docked, the attached frame will completely jam the outer wall of the standard section, so that it is convenient for subsequent docking with the standard section. However, when the ear plates are welded to the door-type frame, the door-type frame and the ear plates need to be swung on the welding mold, and then the ear plates are welded to the door-type frame by welding to form the attached frame. However, the above welding needs to be manually welded and swung, which is troublesome and inefficient. Summary of the invention

[0003] In view of the deficiencies of the above-mentioned prior art, the present invention proposes a fully automatic welding device for the ear plate on the tower crane attachment frame, which facilitates the automatic welding of the ear plate and the attachment frame, thereby reducing the labor intensity of the staff and improving the welding efficiency, and at the same time eliminating the need for manual arranging.

[0004] To achieve the above-mentioned purpose, the scheme of the present invention is: a fully automatic welding device for ear plates on the attachment frame of a tower crane, comprising an attachment frame conveying mechanism, an ear plate swinging mechanism, a welding mechanism and an attachment frame docking mechanism, the attachment frame conveying mechanism is two-way and the two attachment frame conveying mechanisms are arranged side by side, the attachment frame conveying mechanism is a plurality of conveying rollers arranged side by side and the plurality of conveying rollers are driven by a motor, the plurality of conveying rollers are installed on the ground through bearings and bearing seats, an ear plate swinging mechanism is arranged between the two attachment frame conveying mechanisms, and the ear plate is swung on the attachment frame through the ear plate swinging mechanism. At the end, welding mechanisms are arranged on both sides of the ear plate swinging mechanism, and the ear plate and the attachment frame are welded by the welding mechanism. Attachment frame docking mechanisms are arranged on the inner and outer sides of the attachment frame conveying mechanism, and the two attachment frames are docked by the attachment frame docking mechanisms; the attachment frame docking mechanism includes a lifting component, a pushing component, a limiting component and a baffle, wherein lifting components are arranged on both sides of each attachment frame conveying mechanism, and multiple groups of rollers arranged side by side are arranged on the lifting component, and a pushing component is arranged on the outer side of the attachment frame conveying mechanism, and the two groups of lifting components are connected by the pushing component. The parts are moved closer to the middle, a baffle is arranged above the lifting assembly, the distance between the two groups of attachment frames is limited by the baffle, a limiting assembly is arranged on the baffle, and the two sides of the attachment frame are limited by the limiting assembly; the ear plate swinging mechanism includes an ear plate clamping assembly and an ear plate conveying assembly, ear plate conveying assemblies are respectively arranged on both sides of the lifting assembly, and multiple groups of ear plate clamping assemblies are arranged on the ear plate conveying assembly, and the ear plate clamping assembly includes a positioning pin, a clamping plate, a tightening block and a telescopic assembly, wherein a tightening block is arranged on the ear plate conveying assembly, and a contact with the outer wall of the ear plate is arranged on the top and bottom surfaces of the tightening block A clamping groove is provided, clamping plates are provided on the upper and lower sides of the clamping block, a positioning pin is provided on the side of the clamping plate facing the clamping block, a telescopic component is provided between each clamping plate and the clamping block, the clamping of the clamping plate is achieved by the telescopic component, and at the same time a telescopic limiting component for limiting the clamping block is provided on the lifting component, the telescopic limiting component limits the position of the clamping block, thereby ensuring the position of the ear plate and the attachment frame; a welding mechanism is provided above the lifting mechanism, the welding mechanism is divided into two groups and the two groups of welding mechanisms are respectively located on the upper and lower sides of the attachment frame and the welding mechanism can be moved, thereby achieving welding.

[0005] Preferably, the ear plate conveying assembly is a plurality of conveying chains arranged side by side, and the plurality of conveying chains are driven by meshing with sprockets, and the sprockets are driven by stepping motors, and the telescopic assembly is a cylinder, and the cylinder body of the cylinder is embedded in a clamping block, and the piston rod of the cylinder is fixed to the clamping plate by welding, and a positioning pin is fixed on each clamping plate and the positioning pin extends into the pin hole of the ear plate; the telescopic limit assembly is arranged between the attachment frame and the ear plate conveying assembly, and the telescopic limit assembly includes a gear rod and a telescopic limit cylinder, wherein two relatively arranged telescopic limit cylinders are arranged above the lifting assembly, and a gear rod is fixed on the piston rod of the telescopic limit cylinder, and when the clamping block is located between the two attachment frames, the gear rod limits the clamping block, and when the ear plate is welded, the telescopic limit cylinder retracts, and the gear rod gives way to the clamping block.

[0006] Preferably, the lifting assembly includes a lifting plate and a lifting assembly, a lifting plate is arranged on the inner side of the attachment frame conveying mechanism, a lifting assembly is arranged between the lifting plate and the ground, the lifting and lowering of the lifting plate is realized by the lifting assembly, and a pushing assembly is arranged on the outer side of the attachment frame conveying mechanism, the pushing assembly includes a pushing hydraulic cylinder, a pushing plate and a return pull plate, wherein the pushing hydraulic cylinder is arranged on the ground, a pushing plate is fixed on the piston rod of the pushing hydraulic cylinder, a return pull plate is hinged on the pushing plate, the return pull plate is an L-shaped plate, and a swing plate is arranged between the return pull plate and the pushing plate The moving cylinder realizes the swing of the return pull plate through the swing cylinder, so that the attachment frame is swung back and forth; two groups of limit assemblies are arranged on the lifting assembly, and each group of limit assemblies is an inclined plate with a bell-shaped mouth, and the attachment frame is limited by the inclined plate, and the two ends of each inclined plate are respectively against the inner side surface of the attachment frame; a baffle is fixed on the lifting plate on the lifting assembly, and the baffle is two and the two baffles are respectively located between the two attachment frames, and the two baffles are arranged opposite to each other and contact the inner wall of the attachment frame, and the position of the two attachment frames is limited by the baffle.

[0007] Preferably, the welding mechanism includes a sliding assembly, a welding gun and a height adjustment assembly, wherein a sliding assembly is arranged on the lifting plate, and the sliding direction of the sliding assembly is consistent with the moving direction of the attachment frame, a connecting frame is fixed on the sliding assembly, there are two groups of welding guns and the two groups of welding guns are arranged on the upper and lower ends of the connecting frame, so that the two groups of welding guns are arranged up and down, and each group of welding guns contacts the ear plate and the inner wall of the attachment frame for welding, an elastic telescopic assembly is arranged between the welding gun and the upper and lower ends of the connecting frame, a height adjustment assembly is arranged on the welding gun and the height adjustment assembly is pressed on the ear plate, the height adjustment assembly is a roller, the roller is fixed on the welding gun, and the roller is pressed on the ear plate; the elastic telescopic assembly is a plurality of telescopic rods and a spring is sleeved on each telescopic rod; the sliding assembly is a linear motor, and the translation of the welding gun is realized by the linear motor.

[0008] Compared with the prior art, the advantages of the present invention are: it is easy to realize the automatic welding of the connecting ear plate and the attachment frame, thus reducing the labor intensity of the staff and improving the welding efficiency, and no manual arranging is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a top view of the present invention.

[0010] Figure 2 It is a schematic diagram of the attachment frame docking mechanism of the present invention.

[0011] Figure 3 It is a cross-sectional view of the attachment frame docking mechanism of the present invention.

[0012] Figure 4 It is a schematic diagram of the ear plate conveying mechanism of the present invention.

[0013] Figure 5 Schematic diagram and cross-sectional view of the ear plate abutting block of the present invention.

[0014] Figure 6 It is a schematic diagram of a welding gun of the present invention.

[0015] Figure 7 It is a schematic diagram of the finished workpiece after welding according to the present invention.

[0016] Among them, 1. Attachment frame conveying mechanism, 1.1. Conveying roller, 2. Ear plate swinging mechanism, 2.1. Ear plate clamping assembly, 2.2. Positioning pin, 2.3. Clamping plate, 2.4. Tightening block, 2.5. Clamping groove, 2.6. Telescopic assembly, 2.7. Ear plate conveying assembly, 2.8. Conveying chain, 2.9. Sprocket, 2.10. Telescopic limit assembly, 2.11. Gear lever, 2.12. Telescopic limit cylinder, 3. Welding mechanism, 3.1. Sliding assembly, 3.2, connecting frame, 3.3, welding gun, 3.4, height adjustment assembly, 3.5, roller, 3.6, elastic telescopic assembly, 3.7, telescopic rod, 4, attachment frame docking mechanism, 4.1, lifting assembly, 4.2, lifting plate, 4.3, lifting assembly, 4.4, ejecting assembly, 4.5, ejecting hydraulic cylinder, 4.6, ejecting plate, 4.7, return pull plate, 4.8, swing cylinder, 4.9, limit assembly, 4.10, inclined plate, 4.11, baffle. DETAILED DESCRIPTION

[0017] The present invention is now further described with reference to the accompanying drawings.

[0018] like Figure 1-7As shown, a fully automatic welding device for ear plates on an attachment frame of a tower crane comprises an attachment frame conveying mechanism 1, an ear plate swinging mechanism 2, a welding mechanism 3 and an attachment frame docking mechanism 4, the attachment frame conveying mechanism 1 is two-track and the two attachment frame conveying mechanisms 1 are arranged side by side, the attachment frame conveying mechanism 1 is a plurality of conveying rollers 1.1 arranged side by side and the plurality of conveying rollers 1.1 are driven by a motor, the plurality of conveying rollers 1.1 are installed on the ground through bearings and bearing seats, the attachment frame is placed on the conveying rollers 1.1, and the attachment frame is conveyed by the conveying rollers 1.1, an ear plate swinging mechanism 2 is arranged between the two attachment frame conveying mechanisms 1, the ear plate is swung on the end of the attachment frame by the ear plate swinging mechanism 2, and the ear plate is placed on the end of the attachment frame by the ear plate swinging mechanism 2. A welding mechanism 3 is provided on both sides of the attachment frame, and the welding mechanism 3 is used to weld the ear plate to the attachment frame. An attachment frame docking mechanism 4 is provided on the inner and outer sides of the attachment frame conveying mechanism 1, and the two attachment frames are docked by the attachment frame docking mechanism 4. In this way, the ear plate and the attachment frame are docked and welded, so that the attachment frame and the ear plate are docked and fixed; the attachment frame docking mechanism 4 includes a lifting component 4.1, a pushing component 4.4, a limiting component 4.9 and a baffle 4.11, wherein a lifting component 4.1 is provided on the ground inside each attachment frame conveying mechanism 1 (the lifting component 4.1 is provided on the ground inside the attachment frame, and the attachment frame is separated from the attachment frame conveying mechanism 1 by lifting and lowering the lifting component 4.1. ), a plurality of groups of rollers arranged side by side in a transverse manner are fixed on the lifting component 4.1 through bearings and bearing seats, a pushing component 4.4 is arranged on the outside of the attachment frame conveying mechanism 1, the attachment frame is pushed onto the lifting component 4.1 through the pushing component 4.4, and at the same time, the pushing component 4.4 realizes that the two groups of lifting components 4.1 are brought closer to the middle, a baffle 4.1 is fixed above the lifting component 4.1 by bolt fastening, the baffle 4.11 limits the distance between the two groups of attachment frames, and a limiting component 4.9 is fixed on the baffle 4.11 by bolt fastening, the two sides of the attachment frame are limited by the limiting component 4.9, and the attachment frames are docked when docking through the limiting component 4.9; the ear plate swinging mechanism 2 includes The ear plate clamping assembly 2.1 and the ear plate conveying assembly 2.7 are respectively provided with ear plate conveying assemblies 2.7 on the ground on both sides of the lifting assembly 4.1 by means of diffuse fastening. A plurality of groups of ear plate clamping assemblies 2.1 are provided on the ear plate conveying assembly 2.7. The ear plate clamping assembly 2.1 is conveyed by the ear plate conveying assembly 2.7. Since the ear plate clamping assembly 2.1 clamps the ear plate, the conveying of the ear plate is realized. The ear plate is conveyed between the two attachment frames by the ear plate conveying assembly 2.7. The ear plate clamping assembly 2.1 comprises a positioning pin 2.2, a clamping plate 2.3, a tightening block 2.4 and a telescopic assembly 2.6. A plurality of evenly spaced tightening blocks 2.4 are fixed on the ear plate conveying assembly 2.7 by means of welding.The top and bottom surfaces are provided with clamping grooves 2.5 in contact with the outer wall of the tail of the ear plate, and the direction of the ear plate is limited by the clamping grooves 2.5. Clamping plates 2.3 are provided on the upper and lower sides of the clamping block 2.4. Two positioning pins 2.2 are fixed by welding on the side of the clamping plate 2.3 facing the clamping block 2.4. A telescopic component 2.6 is fixed by welding between each clamping plate 2.3 and the clamping block 2.4. The clamping of the clamping plate 2.3 to the clamping block 2.4 is achieved by the telescopic component 2.6. At the same time, a telescopic limiting component 2.10 for limiting the clamping block 2.4 is provided on the lifting component 4.1 by bolt fastening. The telescopic limiting component 2.10 limits the clamping block 2.4, thereby ensuring the position of the ear plate and the attachment frame (that is, when the ear plate is located between the two attachment frames, the telescopic limiting component 2.10 is lifted up to support the bottom of the clamping block 2.4). , so as to limit the position of the ear plate and ensure the position of the ear plate and the attachment frame, that is, firstly convey the ear plate to the attachment frame through the ear plate conveying component 2.7, and then the attachment frames are brought close to each other, so that the ear plate and the attachment frame end are butted); a welding mechanism 3 is arranged above the lifting mechanism, and the welding mechanism 3 is divided into two groups and the two groups of welding mechanisms 3 are respectively located at the upper and lower sides of the attachment frame and the welding mechanism 3 can be moved, so as to realize welding. When the ear plate and the attachment frame are butted, the ear plate and the attachment frame are welded by the welding mechanism 3, so as to realize automatic welding. At the same time, the feeding of the ear plate only needs to put the manual ear plate on the positioning pin column 2.2, and the attachment frame can be placed on the attachment frame conveying mechanism 1. When the welding is completed, the clamping plates 2.3 are away from each other, and at the same time, the push-up component 4.4 drags the welded attachment frame to the attachment frame conveying mechanism 1 for conveying and unloading. .

[0019] The ear plate conveying assembly 2.7 is a plurality of conveying chains 2.8 arranged side by side, and the plurality of conveying chains 2.8 are driven by meshing with a sprocket 2.9, and the sprocket 2.9 is driven by a stepping motor, and the telescopic assembly 2.6 is a cylinder, and the cylinder body of the cylinder is embedded in the abutting block 2.4, and the piston rod of the cylinder is fixed to the clamping plate 2.3 by welding, and a positioning pin 2.2 is fixed on each clamping plate 2.3, and the positioning pin 2.2 extends into the pin hole of the ear plate; the telescopic limit assembly 2.10 is arranged between the attachment frame and the ear plate conveying assembly 2.7, and the telescopic limit assembly 2.10 includes a gear lever 2.11 and a telescopic limit cylinder 2.12, wherein two telescopic limit cylinders 2.12 arranged opposite to each other are arranged above the lifting assembly 4.1 (the two telescopic limit cylinders 2.12 are arranged transversely on the lifting plate 4.4). .2), a shift rod 2.11 is fixed on the piston rod of the telescopic limit cylinder 2.12 by welding, and the telescopic limit cylinder 2.12 realizes the telescopic movement of the shift rod 2.11. When the shift rod 2.11 is lifted, the shift rod 2.11 is located below the abutting block 2.4 to lift the abutting block 2.4. When the shift rod 2.11 contacts the abutting block 2.4, the conveying chain 2.8 stops conveying. When the welding is completed, the attachment frame moves to both sides, and the shift rod 2.11 returns to its position, and the shift rod 2.11 gives way to the abutting block 2.4. In this way, the conveying chain 2.8 works. When the abutting block 2.4 is located between the two attachment frames, the shift rod 2.11 limits the abutting block 2.4. When the ear plate is welded, the telescopic limit cylinder 2.12 retracts, and the shift rod 2.11 gives way to the abutting block 2.4.

[0020] The lifting assembly 4.1 includes a lifting plate 4.2 and a lifting assembly 4.3. The lifting plate 4.2 is arranged on the ground inside the attachment frame conveying mechanism 1, and the lifting assembly 4.3 is arranged between the lifting plate 4.2 and the ground. The lifting plate 4.2 is lifted and lowered by the lifting assembly 4.3 (the lifting assembly 4.3 is a plurality of lifting hydraulic cylinders, the cylinder bodies of the lifting hydraulic cylinders are fixed to the ground by bolts, and the piston rods of the lifting hydraulic cylinders are fixed to the bottom of the lifting plate 4.2 by bolts, wherein the extension and retraction of the lifting hydraulic cylinders realizes the lifting and lowering of the lifting plate 4.2, and the attachment frame is pushed onto the lifting plate 4.2 by the pushing assembly 4.4, and then the lifting plate 4.2 rises In this way, the attachment frame is separated from the attachment frame conveying mechanism 1. A push-up assembly 4.4 is fixed on the ground outside the attachment frame conveying mechanism 1 by bolt fastening. The push-up assembly 4.4 includes a push-up hydraulic cylinder 4.5, a push-up plate 4.6 and a return pull plate 4.7. The cylinder body of the push-up hydraulic cylinder 4.5 is installed on the ground by bolt fastening. The push-up plate 4.6 is fixed on the piston rod of the push-up hydraulic cylinder 4.5 by bolt fastening. The return pull plate 4.7 is hinged on the top surface of the push-up plate 4.6. The return pull plate 4.7 is an L-shaped plate. A swing plate is fixed between the return pull plate 4.7 and the push-up plate 4.6 by hinged means. The cylinder 4.8 realizes the swing of the return pull plate 4.7 by swinging the cylinder 4.8. When the return pull plate 4.7 swings downward, the L-shaped plate is hooked on the inner side of the attachment frame (when the push plate 4.6 returns, the attachment frame follows the return, and when the push plate 4.6 pushes inward, the attachment frame conveying mechanism 1 stops working), so that the attachment frame can swing back and forth; there are two groups of limit assemblies 4.9 on the lifting assembly 4.1 by bolt fastening, and each group of limit assemblies 4.9 is a flared inclined plate 4.10 (the inclined plate 4.10 opens to the front and rear sides), and the attachment frame is limited by the inclined plate 4.10. Each inclined plate 4.1 0, the two ends are respectively against the inner side of the attachment frame, so that the attachment frame is limited by the push plate 4.6 and the inclined plate 4.10; a longitudinally arranged baffle 4.11 is fixed on the lifting plate 4.2 on the lifting assembly 4.1 by bolt fastening, and the baffle 4.11 is two pieces and the two baffles 4.11 are respectively located between the two attachment frames, the two baffles 4.11 are relatively longitudinally arranged and the baffles 4.11 are in contact with the right inner wall / left inner wall of the attachment frame, and the positions of the two attachment frames are limited by the baffles 4.11, and the spacing between the two baffles 4.11 is the spacing between the attachment frames, and the baffles 4.11 are against the end surface of the attachment stop rod 2.11.

[0021] The welding mechanism 3 includes a sliding assembly 3.1, a welding gun 3.3 and a height adjustment assembly 3.4, wherein the sliding assembly 3.1 is fixed on the lifting plate 4.2 by bolt fastening, the sliding direction of the sliding assembly 3.1 is consistent with the moving direction of the attachment frame, and a connecting frame 3.2 is fixed on the sliding assembly 3.1 by bolt fastening (the connecting frame 3.2 is a C-shaped frame and the ends of the C-shaped frame are arranged up and down, the sliding assembly 3.1 is a linear motor, and translation is achieved by the linear motor, and two movable sliding seats are arranged on the stator track of each linear motor, and a connecting frame is fixed to each movable sliding seat by bolt fastening), the welding guns 3.3 are divided into two groups and the two groups of welding guns 3.3 are arranged on the upper and lower ends of the connecting frame 3.2, so that the two groups of welding guns 3.3 are arranged opposite to each other up and down (each group of welding guns 3.3 is divided into two and the two welding guns 3.3 are installed on the same connecting plate by bolt fastening), each group of welding guns 3.3 contacts the ear plate with the inner wall of the attachment frame for welding, and the welding guns 3.3 and the connecting frame are connected. An elastic telescopic component 3.6 is arranged between the upper and lower ends of the connecting frame 3.2. The elastic telescopic component 3.6 is a plurality of telescopic rods 3.7, and a spring is sleeved on each telescopic rod 3.7. The two ends of the telescopic rod 3.7 are respectively welded between the upper and lower ends of the connecting frame 3.2 and the welding gun 3.3, so that the welding gun 3.3 can be raised and lowered. The welding gun 3.3 has a height adjustment component 3.4, and the height adjustment component 3.4 is pressed on the ear plate. The height adjustment component 3.4 is a roller 3.5, and the roller 3.5 is fixed on On the welding gun 3.3 (the roller 3.5 is fixed to the connecting plate by bolts, the bottom of the roller 3.5 contacts the ear plate, and the bottom of the roller 3.5 is at the same height as the bottom of the welding gun 3.3), the roller 3.5 is pressed on the ear plate, and the welding length of the welding gun 3.3 is fixed. The welding gun 3.3 only welds the joint between the ear plate and the attachment frame (the joint between the ear plate and the attachment frame is the widest, and the width of other positions of the ear plate is smaller than the spacing between the welding guns 3.3, so that other positions of the ear plate do not contact the welding gun 3.3).

Claims

1. A fully automatic welding device for ear plates on tower crane attachment frames, comprising an attachment frame conveying mechanism, an ear plate swinging mechanism, a welding mechanism and an attachment frame docking mechanism, wherein the attachment frame conveying mechanism is two-track and the two attachment frame conveying mechanisms are arranged side by side, the attachment frame conveying mechanism is a plurality of conveying rollers arranged side by side and the plurality of conveying rollers are driven by a motor, the plurality of conveying rollers are installed on the ground through bearings and bearing seats, an ear plate swinging mechanism is arranged between the two attachment frame conveying mechanisms, the ear plate is swung on the end of the attachment frame by the ear plate swinging mechanism, welding mechanisms are arranged on both sides of the ear plate swinging mechanism, the ear plate and the attachment frame are welded by the welding mechanism, the attachment frame docking mechanisms are arranged on the inner and outer sides of the attachment frame conveying mechanism, the two attachment frames are docked by the attachment frame docking mechanisms; it is characterized in that The attachment frame docking mechanism includes a lifting assembly, a pushing assembly, a limiting assembly and a baffle, wherein lifting assemblies are arranged on both sides of each attachment frame conveying mechanism, and a plurality of groups of rollers arranged side by side are arranged on the lifting assembly, and a pushing assembly is arranged on the outer side of the attachment frame conveying mechanism, and the two groups of lifting assemblies are brought closer to the middle by the pushing assembly, and a baffle is arranged above the lifting assembly, and the distance between the two groups of attachment frames is limited by the baffle, and a limiting assembly is arranged on the baffle, and the two sides of the attachment frame are limited by the limiting assembly; the ear plate swinging mechanism includes an ear plate clamping assembly and an ear plate conveying assembly, and ear plate conveying assemblies are respectively arranged on both sides of the lifting assembly, and a plurality of groups of ear plate clamping assemblies are arranged on the ear plate conveying assembly, and the ear plate clamping assembly includes a positioning Pins, clamping plates, clamping blocks and telescopic components, wherein a clamping block is provided on the ear plate conveying component, clamping grooves contacting the outer wall of the ear plate are provided on the top and bottom surfaces of the clamping block, clamping plates are provided on the upper and lower sides of the clamping block, and a positioning pin is provided on the side of the clamping plate facing the clamping block, a telescopic component is provided between each clamping plate and the clamping block, and the clamping of the clamping plate is achieved by the telescopic component, and at the same time, a telescopic limiting component for limiting the clamping block is provided on the lifting component, and the telescopic limiting component limits the clamping block, thereby ensuring the position of the ear plate and the attachment frame; a welding mechanism is provided above the lifting mechanism, and the welding mechanism is divided into two groups and the two groups of welding mechanisms are respectively located on the upper and lower sides of the attachment frame and the welding mechanism can be moved, thereby achieving welding.

2. The fully automatic welding device for the upper ear plate of the tower crane attachment frame according to claim 1 is characterized in that: The ear plate conveying assembly is a plurality of conveying chains arranged side by side, and the plurality of conveying chains are driven by meshing with the sprockets, and the sprockets are driven by stepping motors. The telescopic assembly is a cylinder, and the cylinder body of the cylinder is embedded in the clamping block. The piston rod of the cylinder is fixed to the clamping plate by welding, and a positioning pin is fixed on each clamping plate and the positioning pin extends into the pin hole of the ear plate; the telescopic limit assembly is arranged between the attachment frame and the ear plate conveying assembly, and the telescopic limit assembly includes a gear rod and a telescopic limit cylinder, wherein two relatively arranged telescopic limit cylinders are arranged above the lifting assembly, and a gear rod is fixed on the piston rod of the telescopic limit cylinder, and when the clamping block is located between the two attachment frames, the gear rod limits the clamping block, and when the ear plate is welded, the telescopic limit cylinder retracts, and the gear rod gives way to the clamping block.

3. The fully automatic welding device for the upper ear plate of the tower crane attachment frame according to claim 2 is characterized in that: The lifting assembly includes a lifting plate and a lifting assembly. The lifting plate is arranged inside the attachment frame conveying mechanism, and the lifting assembly is arranged between the lifting plate and the ground. The lifting and lowering of the lifting plate is realized by the lifting assembly. The pushing assembly is arranged outside the attachment frame conveying mechanism. The pushing assembly includes a pushing hydraulic cylinder, a pushing plate and a return pull plate. The pushing hydraulic cylinder is arranged on the ground, and the pushing plate is fixed on the piston rod of the pushing hydraulic cylinder. The return pull plate is hinged on the pushing plate. The return pull plate is an L-shaped plate. A swinging air plate is arranged between the return pull plate and the pushing plate. Cylinder, the swing of the return pull plate is realized by the swinging cylinder, so that the attachment frame is swung back and forth; two groups of limit components are arranged on the lifting component, each group of limit components is an inclined plate with a bell-shaped mouth, and the attachment frame is limited by the inclined plate, and the two ends of each inclined plate are respectively against the inner side surface of the attachment frame; a baffle is fixed on the lifting plate on the lifting component, the baffle is two and the two baffles are respectively located between the two attachment frames, the two baffles are arranged opposite to each other and the baffles are in contact with the inner wall of the attachment frame, and the position of the two attachment frames is limited by the baffle.

4. The fully automatic welding device for the upper ear plate of the tower crane attachment frame according to claim 3 is characterized in that: The welding mechanism includes a sliding component, a welding gun and a height adjustment component, wherein a sliding component is arranged on the lifting plate, and the sliding direction of the sliding component is consistent with the moving direction of the attachment frame, a connecting frame is fixed on the sliding component, and there are two groups of welding guns, and the two groups of welding guns are arranged on the upper and lower ends of the connecting frame, so that the two groups of welding guns are arranged up and down, and each group of welding guns contacts the ear plate and the inner wall of the attachment frame for welding, and an elastic telescopic component is arranged between the welding gun and the upper and lower ends of the connecting frame, and a height adjustment component is arranged on the welding gun and the height adjustment component is pressed on the ear plate, and the height adjustment component is a roller, which is fixed on the welding gun and pressed on the ear plate. The elastic telescopic component is a plurality of telescopic rods and a spring is sleeved on each telescopic rod; the sliding component is a linear motor, and the translation of the welding gun is realized by the linear motor.

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