Automatic welding device for heavy-load steel truss girder

Abstract

The invention belongs to the field of heavy-load steel truss girder welding, and discloses a heavy-load steel truss girder automatic welding device which comprises a right supporting device, a welding machine and driving teeth. A right supporting device is arranged on one side of the welding machine, the right supporting device comprises a supporting plate, a fixing shell and a limiting shell, and the right supporting device is symmetrically provided with a left supporting device relative to the vertical center line of the welding machine; a left supporting frame is fixed to the center of the upper end of the left supporting device, a right supporting frame is fixed to the center of the upper end of the supporting plate, the other end of a lead screw is in threaded connection with a nut base, a chain and a connecting sleeve are arranged on the inner walls of the two supporting devices, and the chain is arranged at the welding joint in a surrounding mode. Therefore, the connecting position of the lower end face of the steel truss girder section can be welded, the lower end face of the welding position can be welded on the premise that the position of a worker is not changed, the welding position is reinforced, and damage of wind power to the welding position is reduced.

Description

Technical Field

[0001] The present invention relates to the field of heavy-duty steel truss welding, and in particular to an automatic welding device for heavy-duty steel truss welding. Background Art

[0002] The bridge made of multiple double-layer steel truss segments is a modern bridge construction technology that uses factory prefabrication and on-site splicing. This bridge structure is usually composed of multiple steel truss segments. Each segment is prefabricated in the factory and then transported to the construction site. The segments are connected through precise splicing technology to form a complete bridge. This construction method has the advantages of fast construction speed and easy quality control. When splicing the segments, welding is required to improve the tightness of the connection.

[0003] When the steel truss segments are spliced ​​on the river surface by slings, the middle steel truss segment is only subjected to the upward force of the slings, and the welding gap between it and the other group of steel truss segments on the side is not tightly connected, so that workers and large equipment (floating tugboat) are required to fix and cooperate before welding. The floating tugboat is large in size and difficult to control, which makes it inconvenient to fine-tune the gap between the two steel truss segments. At the same time, in order to improve the firmness of the weld during welding, it is necessary to weld the edges of the connection. At this time, when the workers are located on the upper end face of the steel truss segment, it is not convenient to weld the connection at the lower end face of the steel truss segment. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automated welding device for heavy-loaded steel trusses, which solves the problem in the prior art that it is inconvenient to fine-tune the welding joints due to large supporting equipment, resulting in large gaps in the welding joints, and because of the strong wind in the air, if the other side of the weld is not welded quickly, the already welded side will be affected by the wind and cracks will be generated.

[0005] The purpose of this disclosure can be achieved through the following technical solutions:

[0006] An automatic welding device for heavy-duty steel trusses, comprising a right support device, a welding machine and a driving gear;

[0007] A welding frame is fixed to the lower end surface of the welding machine, and a right supporting device is arranged on one side of the welding machine, the right supporting device comprises a supporting plate, a fixing shell and a limiting shell, and a fixing shell is fixed to one end of the supporting plate by bolts, a limiting shell is inserted into the other end of the supporting plate, and a left supporting device is symmetrically arranged on the right supporting device with respect to the vertical center line of the welding machine;

[0008] A left supporting frame is fixed at the center of the upper end of the left supporting device, and a right supporting frame is fixed at the center of the upper end of the supporting plate, a fixing plate is fixed to the lower end surfaces of the left supporting frame and the right supporting frame, and at least one fixing hole is penetrated at the upper end of the fixing plate, a plurality of limiting holes are penetrated at the upper ends of the left supporting frame and the right supporting frame, a screw rod is penetrated inside the plurality of limiting holes, and one end of the screw rod is connected to the output end of the servo motor, and the other end of the screw rod is threadedly connected to a nut seat;

[0009] A plurality of limiting protrusions are arranged around the outer side of the nut seat, and a groove adapted to the plurality of limiting protrusions is opened at the upper end of the left support frame, and a bearing is fixed on the side of the groove close to the welding machine;

[0010] A plurality of sprockets are fixed between the right supporting device and the left supporting device, and two chains are meshed with the plurality of sprockets, a plurality of connecting sleeves are fixed between the two chains, a plurality of rods are fixed to one end of the nut seat close to the servo motor, and driving teeth are arranged at the upper ends of the plurality of connecting sleeves, and a countersunk hole is opened on the side of the driving teeth close to the left supporting frame.

[0011] In some disclosures, at least one thread groove is provided at one end of the support plate close to the fixing shell, and a through hole is penetrated through the upper end of the fixing shell, and the position of the thread groove corresponds to the position of the through hole.

[0012] In some disclosures, the fixing plate is made of titanium alloy.

[0013] In some disclosures, at least one first protrusion is provided on a side of the support plate close to the limiting shell, a second protrusion is fixed to an inner wall of the limiting shell, and support springs are fixed between a plurality of the first protrusions and the second protrusions.

[0014] In some disclosures, a sprocket seat is fixed to one side of the fixed shell and the limiting shell close to the sprocket, a limiting ring is fixed to the end of the sprocket seat, and the length of the sprocket seat is the same as the thickness of the sprocket.

[0015] In some disclosures, a through hole is provided through the upper end of the welding frame, and the position of the through hole corresponds to the output end of the welding machine;

[0016] In some disclosures, a plurality of clamps are fixed to the bottom of the welding frame, and the welding frame is connected to the connecting sleeve via the plurality of clamps;

[0017] In some disclosures, an electric telescopic rod is fixed to the upper end surface of the welding frame, and the output end of the electric telescopic rod is fixedly connected to the side wall of the welding machine.

[0018] In some disclosures, a rotating ring is coaxially disposed inside the driving tooth.

[0019] In some disclosures, the counterbore is positioned to accommodate a plurality of the rods.

[0020] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0021] A fixed connection is one where the parts or components are fixed without any relative movement;

[0022] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0023] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.

[0024] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0025] Beneficial effects of the present disclosure:

[0026] 1. The right support device and the left support device are respectively fixed on two heavy-loaded steel trusses. Through the cooperation of the screw rod and the screw nut, the two sets of support devices can be moved inwards, and an inward force is applied to the connection of the two steel truss segments, thereby improving the tightness of the connection;

[0027] 2. Chains and connecting sleeves are provided on the inner walls of the two supporting devices, and the chains are arranged around the welded joints, so that the joints at the lower end faces of the steel truss segments at that location can be welded. The lower end faces of the welded joints can be welded without the workers changing their positions, thereby reinforcing the welded joints and reducing the damage to the welded joints caused by wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present disclosure;

[0030] Figure 2 is a schematic diagram of the overall structure of another perspective of an embodiment of the present disclosure;

[0031] Figure 3 is a schematic diagram of the explosion structure of the right supporting device of the explosion structure of the embodiment of the present disclosure;

[0032] Figure 4 is a schematic diagram of the overall structure of the left supporting device of an embodiment of the present disclosure;

[0033] Figure 5 is a schematic diagram of the overall structure of the left support frame of an embodiment of the present disclosure;

[0034] Figure 6 is a schematic diagram of the internal structure of the left support frame according to an embodiment of the present disclosure;

[0035] Figure 7 is a schematic diagram of the overall structure of the driving gear of an embodiment of the present disclosure;

[0036] Figure 8 It is a schematic diagram of the connection structure with the heavy-loaded steel truss according to an embodiment of the present disclosure.

[0037] In the figure: 1, right supporting device; 101, supporting plate; 1001, threaded groove; 1002, first protrusion; 2, fixing shell; 21, through hole; 3, limiting shell; 31, second protrusion; 4, supporting spring; 5, right supporting frame; 51, left supporting frame; 52, limiting hole; 511, groove; 512, bearing; 6, fixing plate; 61, fixing hole; 7, sprocket seat; 71, limiting ring; 8, sprocket; 9, chain; 10, connecting sleeve; 11, left supporting device; 12, welding frame; 121, welding machine; 122, electric telescopic rod; 123, perforation; 124, clamp; 13, servo motor; 131, screw rod; 14, nut seat; 141, limiting protrusion; 142, rod; 15, driving tooth; 151, countersunk hole; 152, rotating ring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0039] According to the concept of this application, Figures 1 to 8 To describe a heavy-duty steel truss automated welding device. Specifically, the heavy-duty steel truss automated welding device is constructed as a split structure, which has three components, namely, a right support device 1, a welding machine 121 and a driving gear 15. The inner walls of the two support devices are provided with chains 9 and connecting sleeves 10, and the chain 9 is arranged around the welded joint, so that the joint of the lower end face of the steel truss segment at this part can be welded, and the lower end face of the weld can be welded without the staff changing their position, thereby reinforcing the weld, which is conducive to reducing the damage to the weld caused by wind.

[0040] Please refer to Figures 1 to 8 , an automatic welding device for heavy-duty steel trusses, comprising: a right support device 1, a welding machine 121 and a driving gear 15;

[0041] A welding frame 12 is fixed to the lower end surface of the welding machine 121, and a right supporting device 1 is provided on one side of the welding machine 121. The right supporting device 1 includes a supporting plate 101, a fixing shell 2 and a limiting shell 3. The fixing shell 2 is bolted to one end of the supporting plate 101, and the limiting shell 3 is inserted into the other end of the supporting plate 101. The right supporting device 1 is symmetrically provided with a left supporting device 11 about the vertical center line of the welding machine 121;

[0042] A left support frame 51 is fixed to the center of the upper end of the left support device 11, and a right support frame 5 is fixed to the center of the upper end of the support plate 101, and a fixing plate 6 is fixed to the lower end surfaces of the left support frame 51 and the right support frame 5, and at least one fixing hole 61 is penetrated through the upper end of the fixing plate 6, and a plurality of limiting holes 52 are penetrated through the upper ends of the left support frame 51 and the right support frame 5, and a screw rod 131 is penetrated through the inner side of the plurality of limiting holes 52, and one end of the screw rod 131 is connected to the output end of the servo motor 13, and the other end of the screw rod 131 is threadedly connected to the nut seat 14;

[0043] A plurality of limiting protrusions 141 are arranged around the outer side of the nut seat 14, and a groove 511 adapted to the plurality of limiting protrusions 141 is opened at the upper end of the left support frame 51, and a bearing 512 is fixed on the side of the groove 511 close to the welding machine 121;

[0044] A plurality of sprockets 8 are fixed between the right supporting device 1 and the left supporting device 11, and two chains 9 are meshed with the plurality of sprockets 8, a plurality of connecting sleeves 10 are fixed between the two chains 9, a plurality of rods 142 are fixed to one end of the nut seat 14 close to the servo motor 13, and a driving tooth 15 is provided at the upper end of the plurality of connecting sleeves 10, and a countersunk hole 151 is provided on the side of the driving tooth 15 close to the left supporting frame 51.

[0045] When in use, the heavy-duty steel truss segment near the shore is first hoisted to a suitable position, and then the left support device 11 and the right support device 1 are installed on the heavy-duty steel truss segment, and the edge of the heavy-duty steel truss segment is inserted between a plurality of support plates 101, and then the other group of heavy-duty steel truss segments is hoisted to a suitable position, and then the right support device 1 is first bolted through the fixing hole 61 and tightened on the heavy-duty steel truss segment. At this time, the edge of the support plate 1 is parallel to the welding edge of the heavy-duty steel truss segment. At this time, the staff will The support frame 51 is installed on another heavy-duty steel truss segment in the same way by bolts, and then the screw rod 131 is passed through the limiting holes 52 on the two support frames, and the nut seat 14 is threadedly connected at the end of the screw rod 131 away from the servo motor 13. When the servo motor 13 drives the screw rod 131 to rotate, the nut seat 14 is driven to move linearly along the screw rod 131 toward the servo motor 13 until the side wall of the nut seat 14 fits with the side wall of the left support frame 51, and drives the left support frame 51 to approach the right support frame 5, so that the welding The two heavy-loaded steel truss girder segments are connected to each other, so that the welding points of the two steel truss girder segments are fine-tuned, which is beneficial to improve the tightness of the connection. When the two steel truss girder segments are tightly fitted, the nut seat 14 cannot continue to move in a straight line, and the continued rotation of the screw rod 131 increases the pressure applied by the nut seat 14 to the left support frame 51, so that the side where the nut seat 14 and the left support frame 51 fit each other causes sliding friction, until the limiting protrusion 141 on the outer wall of the nut seat 14 is embedded in the groove 51 on the inner side of the left support frame 51 1, and the outer wall of the nut seat 14 is inserted into the bearing 512 on the limiting hole 52, and at the same time, the rod 142 on the nut seat 14 is inserted into the countersunk hole 151 on the driving tooth 15. When the left support device 1 approaches the right support device 11, since a plurality of connecting sleeves 10 are fixed between the two chains 9, and the connecting sleeves 10 will shrink inward, the stability of the two chains 9 is improved by the plurality of connecting sleeves 10, and the two heavy-loaded steel truss girder segments can be guided to approach each other in a straight line, which is conducive to further limiting the moving path of the heavy-loaded steel truss girder segments;

[0046] Then, the continued rotation of the servo motor 13 drives the nut seat 14 and the driving tooth 15 to rotate, and the teeth of the driving tooth 15 are inserted into the gap between the two adjacent connecting sleeves 10. Since the two ends of the connecting sleeve 10 are respectively fixedly connected to the two chains 9, when the driving tooth 15 rotates, it can drive the chain 9 and the sprocket 8 to rotate, and drive the welding frame 12 and the welding machine 121 to follow the moving trajectory of the chain 9, so as to weld the connection of the lower end face of the steel truss segment, and the staff welds the upper and lower end faces of the welded connection separately. When welding the single side of the heavy-loaded steel truss segment separately, because the heavy-loaded steel truss segment is lifted to a high altitude by the sling, the wind force at high altitude is strong, making the connection between the two heavy-loaded steel truss segments unstable, and it is easy for cracks to occur at the original weld before welding the other end face of the weld, resulting in the two sections of heavy-loaded steel truss segments being welded loosely.

[0047] At least one thread groove 1001 is provided at one end of the support plate 101 close to the fixed shell 2, and a through hole 21 is penetrated at the upper end of the fixed shell 2, and the position of the thread groove 1001 corresponds to the position of the through hole 21. When welding is completed, the two heavy-loaded steel trusses are welded into a whole. At this time, the left support device 11 and the right support device 1 cannot be taken out along the gap between the two. To deal with this situation, it is necessary to first remove a link on the chain 9, recycle the chain 9 first, and then unscrew the bolt, and pull the fixed shell 2 out of one end of the support plate 101, so that a gap is generated at one end of the right support device 1, and then only the right support device 101 needs to be pulled out along the gap, thereby removing the heavy-loaded steel truss automated welding device from the heavy-loaded steel truss. The connection between the fixed shell 2 and the support plate 101 is a detachable structure, which facilitates the removal of the device after welding is completed.

[0048] The material of the fixing plate 6 is titanium alloy, which has the characteristics of high strength, good corrosion resistance and high heat resistance. Since the heavy-loaded steel trusses are large in size and weight, the high strength of the fixing plate 6 is used when adjusting the two heavy-loaded steel trusses, which is beneficial to reducing the rigid deformation of the fixing plate 6. In addition, since the fixing plate 6 is located on both sides of the welding machine 121, sparks will be generated and splashed around during the welding process, and the titanium alloy fixing plate 6 has high heat resistance, which can further improve the service life of the fixing plate 6.

[0049] At least one first protrusion 1002 is provided on one side of the support plate 101 close to the limit shell 3, and a second protrusion 31 is fixed on the inner wall of the limit shell 3, and a support spring 4 is fixed between the multiple first protrusions 1002 and the second protrusions 31; the limit shell 3 is in a U-shape, so that its U-shaped recess can be stuck at the edge of the heavy-loaded steel truss and can support the bottom support plate 101, and at the same time, the limit shell 3 is slidably installed on the outer wall of the support plate 101, and the position of the limit shell 3 is limited by multiple support springs 4, so that when the right support device 1 and the left support device 11 are stuck on the outer side of the heavy-loaded steel truss, the elastic force of the support spring 4 can cause the limit shell 3 to fit against the side wall of the heavy-loaded steel truss, which is beneficial to improve the tightness of the connection between the right support device 1 and the left support device 11 and the heavy-loaded steel truss, and improve the stability of the device, and at the same time, the distance between the limit shell 3 and the fixed shell 2 can be adjusted by the deformation of the support spring 4, which is beneficial to the adaptability of the device.

[0050] A sprocket seat 7 is fixed on one side of the fixed shell 2 and the limiting shell 3 close to the sprocket 8, and a limiting ring 71 is fixed to the end of the sprocket seat 7, and the length of the sprocket seat 7 is the same as the thickness of the sprocket 8; the position of the sprocket 8 is limited by the limiting ring 71, which can prevent the sprocket 8 from separating from the sprocket seat 7. Because the length of the sprocket seat 7 is the same as the thickness of the sprocket 8, axial sliding of the sprocket 8 during rotation is avoided, which is beneficial to improving the stability of the rotation of the sprocket 8. The length of the sprocket seat 7 is short, so that when the output end of the welding machine 121 passes between the two sprockets 8, the sprocket seat 7 can be prevented from interfering with the movement of the welding machine 121.

[0051] A through hole 123 is provided at the upper end of the welding frame 12, and the position of the through hole 123 corresponds to the output end of the welding machine 121. A plurality of clamps 124 are fixed to the bottom of the welding frame 12, and the welding frame 12 is connected to the connecting sleeve 10 through the plurality of clamps 124; an electric telescopic rod 122 is fixed to the upper end surface of the welding frame 12, and the output end of the electric telescopic rod 122 is fixedly connected to the side wall of the welding machine 121.

[0052] The welding frame 12 is fixed to the outside of the connecting sleeve 10 by a clamp 124, which is convenient for disassembly. The fixing by multiple clamps 124 can limit the position of the welding frame 12 and prevent the welding frame 12 from rotating along the single connecting sleeve 10 when it rotates to the lower end surface of the heavy-loaded steel truss. This is beneficial to improving the stability between the connecting sleeve 10 and the welding frame 12. Moreover, since the connecting sleeve 10 moves synchronously with the chain 9, the welding frame 12 will not interfere with the connecting sleeve 10 during its movement.

[0053] When installing the welding machine 121, the side wall of the welding machine 121 is fixed on the electric telescopic rod 122. At this time, the output end of the welding machine 121 corresponds to the position of the perforation 123. When welding, the welding machine 121 is driven up and down by the electric telescopic rod 122, so that the output end of the welding machine 121 is close to the working position during welding. At the same time, since the two ends of the chain 9 are semicircular and the side wall of the heavy-loaded steel truss is a straight surface, when the welding machine 121 moves to the edge of the heavy-loaded steel truss, the distance between the output end of the welding machine 121 and the welding surface increases, thereby causing the length of the welding arc to increase when welding the side of the heavy-loaded steel truss, resulting in uneven heat distribution, insufficient weld penetration, and the formation of incomplete penetration. The output end of the welding machine 121 is driven close to the welding surface by the electric telescopic rod 122, so that the output end of the welding machine 121 is evenly in contact with the welding part, which is conducive to improving the uniformity of welding of the entire connection.

[0054] A rotating ring 152 is coaxially arranged on the inner side of the driving tooth 15. The rotating ring 152 is similar to a roller bearing. The inner wall of the rotating ring 152 is fixedly connected to the screw rod 131, and the outer wall of the rotating ring 152 is connected to the inner wall of the driving tooth 15. When the screw rod 131 rotates, the rotational force of the screw rod 131 drives the inner wall of the rotating ring 152 to rotate. When the inner wall of the rotating ring 152 rotates, the circumferential force of the screw rod 131 is consumed when the screw rod 131 rotates, so that before the rod 142 is inserted into the counterbore 151, the screw rod 131 rotates to drive the tooth 15 It will not rotate, so that the connecting sleeve 10 will not be moved in advance during the fine-tuning process to make the welding machine 121 move forward. The position of the countersunk hole 151 is adapted to the multiple rods 142. Since the position of the driving tooth 15 will not change during the fine-tuning process, when the limiting protrusion 141 on the nut seat 14 is embedded in the groove 511, the position of the rod 142 corresponds to the position of the countersunk hole 151 and is inserted into the countersunk hole 151. At this time, the screw rod 131 continues to rotate, and the driving tooth 15 is driven to rotate through the nut seat 14 and the rod 142.

[0055] The following is a further description of the heavy-duty steel truss automatic welding device provided by the present invention in conjunction with the accompanying drawings and implementation modes.

[0056] When in use, the heavy-loaded steel truss segment on the shore side is first hoisted to a suitable position, and then the left support device 11 and the right support device 1 are put on the outer wall of the heavy-loaded steel truss segment through the gap between the two heavy-loaded steel truss segments, and then the right support device 1 is bolted through the fixing hole 61 and tightened on the heavy-loaded steel truss segment, and the limiting shell 3 is dragged outward, and the inner walls of the limiting shell 3 and the fixing shell 2 are made to fit with the edge of the heavy-loaded steel truss segment by adjusting the stretching of the support spring 4. At this time, the staff installs the left support frame 51 on the other heavy-loaded steel truss segment in the same way, and then the screw rod 131 is passed through the limiting holes 52 on the right support frame 5 and the left support frame 51, and the nut seat 14 is tightened to the end of the screw rod 131;

[0057] Then start the servo motor 13, the servo motor 13 drives the screw rod 131 to rotate, and drives the nut seat 14 to move linearly along the screw rod 131 in the direction of the servo motor 13, until the side wall of the nut seat 14 fits with the side wall of the left support frame 51, and drives the left support frame 51 to approach the right support frame 5, so that the two heavy-loaded steel truss girder segments that need to be welded can be brought closer to each other, so as to fine-tune the welding points of the two steel truss girder segments. When the two steel truss girder segments are tightly fitted, the nut seat 14 can no longer move linearly, and the continued rotation of the screw rod 131 increases the pressure applied by the nut seat 14 to the left support frame 51, so that The nut seat 14 and the left support frame 51 are in contact with each other on one side, and sliding friction occurs until the limiting protrusion 141 on the outer wall of the nut seat 14 is embedded in the groove 511 on the inner side of the left support frame 51, and the outer wall of the nut seat 14 is inserted into the bearing 512 on the limiting hole 52, and at the same time, the rod 142 on the nut seat 14 is inserted into the countersunk hole 151 on the driving tooth 15. At this time, the screw rod 131 continues to rotate to drive the teeth on the driving tooth 15 to be interlaced with the connecting sleeve 10, thereby driving the connecting sleeve 10 and the chain 9 to rotate, and driving the welding machine 121 to move along the path of the chain 9, so as to weld the lower end surface of the welding surface;

[0058] After welding is completed, a link on the chain 9 needs to be removed, the chain 9 is first recycled, and then the bolts are unscrewed and the fixing shell 2 is pulled out from one end of the support plate 101 to create a gap on one side of the right support device 1, thereby facilitating the recycling of the device.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure may have various changes and improvements, and these changes and improvements fall within the scope of the present disclosure to be protected.

Claims

1. A heavy-duty steel truss automated welding device, characterized in that: include: A right supporting device (1), a welding machine (121) and a driving gear (15); A welding frame (12) is fixed to the lower end surface of the welding machine (121), and a right supporting device (1) is arranged on one side of the welding machine (121), wherein the right supporting device (1) comprises a supporting plate (101), a fixing shell (2) and a limiting shell (3), and the fixing shell (2) is bolted to one end of the supporting plate (101), and the limiting shell (3) is inserted into the other end of the supporting plate (101), and the right supporting device (1) is symmetrically arranged with a left supporting device (11) about the vertical center line of the welding machine (121); A left support frame (51) is fixed at the center of the upper end of the left support device (11), and a right support frame (5) is fixed at the center of the upper end of the support plate (101), and a fixing plate (6) is fixed to the lower end surfaces of the left support frame (51) and the right support frame (5), and at least one fixing hole (61) is penetrated through the upper end of the fixing plate (6), and a plurality of limiting holes (52) are penetrated through the upper ends of the left support frame (51) and the right support frame (5), and a screw rod (131) is penetrated through the inner side of the plurality of limiting holes (52), and one end of the screw rod (131) is connected to the output end of the servo motor (13), and the other end of the screw rod (131) is threadedly connected to a nut seat (14); A plurality of limiting protrusions (141) are arranged around the outer side of the nut seat (14), and a groove (511) adapted to the plurality of limiting protrusions (141) is provided at the upper end of the left support frame (51), and a bearing (512) is fixed on a side of the groove (511) close to the welding machine (121); A plurality of sprockets (8) are fixed between the right support device (1) and the left support device (11), and two chains (9) are meshed with the plurality of sprockets (8), and a plurality of connecting sleeves (10) are fixed between the two chains (9). A plurality of rods (142) are fixed to one end of the nut seat (14) close to the servo motor (13), and a driving tooth (15) is provided at the upper end of the plurality of connecting sleeves (10), and a countersunk hole (151) is provided on one side of the driving tooth (15) close to the left support frame (51).

2. The heavy-duty steel truss automatic welding device according to claim 1 is characterized in that: At least one thread groove (1001) is provided at one end of the support plate (101) close to the fixed shell (2), and a through hole (21) is provided through the upper end of the fixed shell (2), and the position of the thread groove (1001) corresponds to the position of the through hole (21).

3. The heavy-duty steel truss automatic welding device according to claim 2 is characterized in that: The fixing plate (6) is made of titanium alloy.

4. The heavy-duty steel truss automatic welding device according to claim 2 is characterized in that: At least one first protrusion (1002) is provided on a side of the support plate (101) close to the limiting shell (3), a second protrusion (31) is fixed to the inner wall of the limiting shell (3), and a supporting spring (4) is fixed between a plurality of the first protrusions (1002) and the second protrusions (31).

5. The heavy-duty steel truss automatic welding device according to claim 4 is characterized in that: A sprocket seat (7) is fixed on one side of the fixed shell (2) and the limiting shell (3) close to the sprocket (8), and a limiting ring (71) is fixed at the end of the sprocket seat (7), and the length of the sprocket seat (7) is the same as the thickness of the sprocket (8).

6. The heavy-duty steel truss automatic welding device according to claim 1, characterized in that: A through hole (123) is provided through the upper end of the welding frame (12), and the position of the through hole (123) corresponds to the output end of the welding machine (121).

7. The heavy-duty steel truss automatic welding device according to claim 6, characterized in that: A plurality of clamps (124) are fixed to the bottom of the welding frame (12), and the welding frame (12) is connected to the connecting sleeve (10) via the plurality of clamps (124).

8. The heavy-duty steel truss automatic welding device according to claim 7, characterized in that: An electric telescopic rod (122) is fixed to the upper end surface of the welding frame (12), and the output end of the electric telescopic rod (122) is fixedly connected to the side wall of the welding machine (121).

9. The heavy-duty steel truss automatic welding device according to claim 1, characterized in that: A rotating ring (152) is coaxially arranged on the inner side of the driving tooth (15).

10. The heavy-duty steel truss automatic welding device according to claim 9, characterized in that: The position of the counterbore (151) is adapted to the plurality of rods (142).

Images