A composite welding method and system for truck steel structure chassis

Abstract

The present application discloses a composite welding method and system for a truck steel structure chassis, which relates to the technical field of vehicle chassis welding, and includes a frame; a workbench, a clamping tool connected to the workbench to limit the chassis placed on the workbench; a smoking mechanism; the smoking mechanism includes a smoking column, which is slidably arranged on the workbench in a direction perpendicular to the workbench, the smoking column is hollow, and a smoking nozzle is arranged on the smoking column, and a lifting component is arranged on the workbench. The smoking column is driven to rise by the lifting component, so that the smoking column rises from the bottom of the workbench to a spot welding position close to the chassis, and the smoking nozzle is kept below the head of the welder; the smoking mechanism is started, and then the main beam and the auxiliary beam of the chassis can be spot welded. The smoking nozzle is close to the spot welding position, which can absorb the smoke generated by the electric welding in a timely and efficient manner, and the smoke is absorbed by the smoking nozzle before it rises to the height of the worker's head, so as to prevent the smoke from being inhaled by the welder.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle chassis welding, and in particular to a composite welding method and system for a truck steel structure chassis. Background Art

[0002] In the production and manufacturing process of trucks, welding of the steel structure chassis of trucks is an important process. At present, factory assembly lines usually use robots for welding. When welding the chassis, the horizontal sub-beam needs to be welded to the longitudinal main beam. In order to ensure the quality of welding, it is usually necessary to manually spot weld to fix each component, and then fix the chassis position with a fixture, and then the overall welding operation can be started by robots or manually.

[0003] During the manual spot welding process, a large amount of smoke (such as metal oxides, ozone, carbon monoxide, etc.) will be generated, polluting the workshop environment and affecting the health of workers. Summary of the invention

[0004] In order to reduce the impact on workers' health, the present application provides a truck steel structure chassis composite welding method and system.

[0005] On the one hand, the present application provides a truck steel structure chassis composite welding system, which adopts the following technical solutions: A truck steel structure chassis composite welding system, comprising: Frame; A workbench, used for placing the chassis to be welded, the workbench is rotatably arranged on the frame, a flip assembly for driving the workbench to flip is arranged on the frame, and a plurality of processing grooves penetrating the workbench are opened on the workbench; A clamping tool connected to the workbench to limit the bottom frame placed on the workbench; A smoking mechanism, arranged on the workbench, for absorbing smoke generated by spot welding; The smoking mechanism comprises a smoking column, which is slidably arranged on the workbench in a direction perpendicular to the workbench, the smoking column is hollow, and a smoking nozzle is arranged on the smoking column, and a lifting component for driving the smoking column to rise and fall is arranged on the workbench.

[0006] By adopting the above technical solution, after the worker places the chassis to be welded, i.e. the main beam and the auxiliary beam, on the workbench, the position of the chassis is fixed by the clamping tool, and then the smoking column is driven to rise by the lifting assembly, so that the smoking column rises from the bottom of the workbench to the spot welding position close to the chassis, and the smoking nozzle is kept below the head of the welder; the smoking mechanism is started, and then the main beam and the auxiliary beam of the chassis can be spot welded. The smoking nozzle is close to the spot welding position, which can absorb the smoke generated by the electric welding in a timely and efficient manner to prevent the smoke from spreading, and the smoking nozzle is located below the worker's head, so that the smoke is absorbed by the smoking nozzle before it rises to the height of the worker's head, preventing the smoke from being inhaled by the welder, effectively reducing the impact on the worker's health; and the smoking column is located on one side of the welding position of the chassis, which can prevent interference with the electric welding operation.

[0007] Optionally, the smoking columns are arranged in multiple groups, each group includes two smoking columns, the two smoking columns are respectively arranged on both sides of the processing groove, and the two smoking columns are distributed along the length direction of the workbench.

[0008] By adopting the above technical solution, the number of smoking columns corresponds to the number of spot welding. Since the connection between the main beam and the auxiliary beam is located at the processing groove, two smoking columns are arranged at both ends of the processing groove, which effectively improves the smoking effect.

[0009] Optionally, the lifting assembly includes a lifting gear, a rack and a driving motor. The rack is fixedly arranged on the side wall of the smoking column along the length direction of the smoking column. The lifting gear is rotatably arranged on the workbench. The lifting gear is meshed with the rack. The driving motor is arranged on the workbench to drive the lifting gear to rotate.

[0010] By adopting the above technical solution, when the spot welding is completed, the lifting gear is driven by the driving motor to rotate, and the lifting gear drives the rack to move, thereby driving the smoke collecting column to move downward, so that the smoke collecting column moves to the bottom of the base frame or the workbench. When the next welding process is carried out, the smoke collecting column is prevented from interfering with the welding operation of the welding robot, thereby improving the welding efficiency.

[0011] Optionally, a mounting block is provided at the bottom of the workbench, the smoking column is fixedly provided on the mounting block, a rotating shaft is rotatably provided at the bottom of the workbench, lifting gears are fixedly provided at both ends of the rotating shaft, the lifting gears are rotatably provided on the mounting block, and the output shaft of the driving motor is fixedly connected to one end of the rotating shaft.

[0012] Optionally, the rotating shaft includes a sleeve and two movable shafts, the two movable shafts are respectively slidably inserted into the two ends of the sleeve, a limit key is fixedly arranged on the side wall of the movable shaft along the axial direction of the movable shaft, a key slot is opened on the inner wall of the sleeve along the axial direction of the sleeve, and the limit key is slidably connected to the key slot; the bottom wall of the workbench is provided with a telescopic part for driving the two mounting blocks to slide.

[0013] Optionally, a filter tube is provided in the smoking column, the top of the filter tube is connected to the smoking nozzle, and the side wall of the filter tube is provided with a plurality of filter holes; the smoking mechanism also includes an intake pipe and a purification component, one end of the intake pipe is connected to the bottom of the smoking column, and the other end is connected to the purification component.

[0014] By adopting the above technical solution, the smoke generated by electric welding contains metal oxides. After the smoke enters the filter tube through the smoking nozzle, the metal oxides with larger particles are cooled and gathered in the filter tube, while the filtered smoke passes through the filter holes and enters the evolution component through the intake pipe; the cooled metal oxides are prevented from entering the intake pipe and accumulating in the intake pipe, reducing the intake capacity and causing the smoking efficiency of the smoking nozzle to be reduced.

[0015] Optionally, the filter tube is rotatably disposed in the smoking column, the smoking nozzle is fixedly disposed on the top of the filter tube, and a rotating component for driving the filter tube to rotate is disposed in the smoking column.

[0016] Optionally, the filter tube can be detachably arranged in the smoking column, and the smoking nozzle can be detachably arranged on the filter tube.

[0017] Optionally, a cleaning piece for cleaning the filter holes is provided in the smoking column.

[0018] On the other hand, the present application provides a truck steel structure chassis composite welding method, which adopts the following technical solution: A truck steel structure chassis composite welding method comprises the following steps: Clean the surface of the chassis to be welded to remove oil, rust and other impurities to ensure the surface quality of the welding area and reduce the generation of smoke caused by impurities; Place the chassis on the workbench and fix the chassis position by clamping tooling; The smoking column is driven to rise by the lifting assembly so that the smoking nozzle is close to the position to be spot welded; Start the smoking mechanism and perform spot welding on the main beam and sub-beam of the chassis.

[0019] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the worker places the chassis to be welded, i.e. the main beam and the secondary beam, on the workbench, he fixes the position of the chassis with the clamping tool, and then drives the smoking column to rise through the lifting assembly, so that the smoking column rises from the bottom of the workbench to the spot welding position close to the chassis, and keeps the smoking nozzle under the head of the welder; start the smoking mechanism, and then the main beam and the secondary beam of the chassis can be spot welded. The smoking nozzle is close to the spot welding position, which can absorb the smoke generated by electric welding in a timely and efficient manner to prevent the smoke from spreading, and the smoking nozzle is located below the worker's head, so that the smoke is absorbed by the smoking nozzle before it rises to the height of the worker's head, preventing the smoke from being inhaled by the welder, effectively reducing the impact on the worker's health; and the smoking column is located on one side of the chassis welding position, which can prevent interference with the welding operation.

[0020] 2. After the spot welding is completed, the lifting gear is driven by the driving motor to rotate, and the lifting gear drives the rack to move, thereby driving the smoking column downward, so that the smoking column moves to the bottom of the chassis or workbench. When the next welding process is carried out, the smoking column is prevented from interfering with the welding operation of the welding robot, thereby improving the welding efficiency.

[0021] 3. The smoke generated by electric welding contains metal oxides. After the smoke enters the filter tube through the mouthpiece, the metal oxides with larger particles are cooled and gathered in the filter tube, while the filtered smoke passes through the filter holes and enters the evolution component through the intake pipe; preventing the cooled metal oxides from entering the intake pipe and accumulating in the intake pipe, reducing the intake capacity and resulting in reduced smoking efficiency of the mouthpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a top view of a workbench according to an embodiment of the present application; Figure 3 It is a partial structural schematic diagram of a workbench according to an embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the smoking mechanism mainly embodied in the embodiment of the present application; Figure 5 This is a schematic diagram of the structure of the lifting assembly mainly embodied in the embodiment of the present application; Figure 6 is a cross-sectional view of a smoking column according to an embodiment of the present application; Figure 7 It is a cross-sectional view of the smoking column and the cleaning component of the embodiment of the present application.

[0023] Description of the accompanying drawings: 1, base; 11, smoking hood; 12, rotating motor; 2, frame; 21, rotating motor; 3, workbench; 31, processing groove; 32, strip groove; 41, limit block; 42, pressing mechanism; 421, pressing block; 422, pressing cylinder; 5, smoking mechanism; 51, smoking column; 511, filter tube; 5111, filter hole; 5112, positioning groove; 5113, top cover; 512, smoking nozzle; 513, mesh frame; 514, dovetail groove; 5 131. locating pin; 52. air intake pipe; 53. purification component; 6. lifting component; 61. lifting gear; 62. rack; 63. drive motor; 7. mounting block; 71. telescopic cylinder; 8. rotating shaft; 81. sleeve; 811. keyway; 82. movable shaft; 821. limit key; 91. power motor; 92. power gear; 93. gear ring; 10. cleaning part; 110. brush plate; 120. brush; 100. chassis; 101. main beam; 102. sub-beam. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] In the manufacturing process of trucks, welding of the steel chassis is an important process. At present, factory assembly lines usually use robots for welding. When welding the chassis, in order to ensure the welding quality, it is usually necessary to manually spot weld the components first, and then fix the chassis position with a fixture, and then the robot can start the overall welding operation. During the manual spot welding process, a large amount of smoke will be generated, which will affect the health of workers.

[0029] As for the scheme of setting a smoke-absorbing mechanism above the workpiece, if the smoke hood of the smoke-absorbing mechanism is too high from the workpiece, it will affect the smoking effect and increase the power of the smoke-absorbing mechanism; if the smoke hood is too low from the workpiece, it will interfere with the workers' spot welding operation and affect the welding efficiency. In addition, during the workers' spot welding operation, part of the rising smoke will still be absorbed by the workers, causing certain impacts on their health.

[0030] The embodiment of the present application discloses a composite welding system for a truck steel structure chassis.

[0031] Reference Figure 1 and Figure 2 A truck steel structure chassis composite welding system includes a base 1, a frame 2, a workbench 3 and a clamping tool. The frame 2 is H-shaped as a whole and includes two parallel beams. The frame 2 is rotatably arranged on the base 1, and two workbenches 3 are symmetrically arranged on the frame 2. A rotating mechanism is arranged between the frame 2 and the base 1. In this embodiment, the rotating mechanism is a rotating motor 12, which drives the frame 2 to rotate 180 degrees in a horizontal plane to exchange the positions of the two workbenches 3.

[0032] Reference Figure 1 and Figure 2, a fume hood 11 is arranged above the frame 2, the fume hood 11 is connected to the air inhalation source, and the fume hood 11 is fixed on one of the workbenches 3. During work, the worker places the chassis 100 to be welded on the workbench 3 away from the fume hood 11. After the spot welding operation is completed, the rotating motor 12 is used to drive the entire frame 2 to rotate 180 degrees, so that the chassis 100 is rotated to the bottom of the fume hood 11. At this time, the welding robot of the factory performs subsequent welding operations on the chassis 100. After the welding is completed, the frame 2 is driven to rotate, and the welded chassis 100 can be removed. Because the spot welding operation area is different from the welding operation area, the fume hood 11 will not interfere with the workers doing the spot welding operation.

[0033] Reference Figure 1 and Figure 2 The workbench 3 is used to place the chassis 100 to be welded. In this embodiment, the chassis 100 includes a main beam 101 and two sub-beams 102. A plurality of processing grooves 31 are provided on the workbench 3, and the connection between the main beam 101 and the sub-beam 102 is located at the processing groove 31. The size of the processing groove 31 is larger than the width of the main beam 101, so that the welding robot can perform welding operations from both sides of the workbench 3. The workbench 3 is rotatably arranged on the frame 2, and a flip assembly for driving the workbench 3 to flip is arranged on the frame 2. The flip assembly includes a rotating motor 21, which is fixedly arranged on the frame 2, and the output shaft of the rotating motor 21 is fixedly connected to the workbench 3. The rotating motor 21 is a servo motor. When the upper part of the chassis 100 is welded, the workbench 3 can be driven to flip 180 degrees so that the bottom of the workbench 3 faces upward. At this time, the other side of the bottom beam can be welded to improve the welding quality.

[0034] Optional, see Figure 2 and Figure 3 The clamping tool 4 is connected to the workbench 3 and is used to limit the base frame 100 placed on the workbench 3. In this embodiment, the clamping tool 4 includes a plurality of limit blocks 41 and a plurality of pressing mechanisms 42. The limit block 41 is fixedly arranged on one side of the workbench 3, and is used to abut against one side of the main beam 101 and the sub-beam 102 to position the base frame 100; the pressing mechanism 42 is used to press the main beam 101 and the sub-beam 102, and the pressing mechanism 42 includes a pressing block 421 and a pressing cylinder 422. The pressing cylinder 422 drives the pressing block 421 to move downward or upward to press or loosen the base frame 100.

[0035] Optionally, a smoking mechanism 5 is disposed on the workbench 3 to absorb smoke generated by spot welding.

[0036] Reference Figure 3 and Figure 4The smoking mechanism 5 includes a smoking column 51 , which is slidably disposed on the workbench 3 in a direction perpendicular to the workbench 3 . The smoking column 51 is hollow, and a smoking nozzle 512 is disposed on the smoking column 51 .

[0037] Multiple groups of smoking columns 51 are provided. In this embodiment, two groups of smoking columns 51 are provided, each group includes two smoking columns 51, and the two smoking columns 51 are respectively provided on both sides of the processing groove 31, and the two smoking columns 51 are distributed along the length direction of the workbench 3. The number of smoking columns 51 corresponds to the number of spot welding. Because the connection between the main beam 101 and the auxiliary beam 102 is located at the processing groove 31, two smoking columns 51 are provided at both ends of the processing groove 31, which effectively improves the smoking effect.

[0038] Optional, see Figure 4 and Figure 5 The workbench 3 is provided with a lifting assembly 6 for driving the smoking column 51 to rise and fall, and the lifting assembly 6 includes a lifting gear 61, a rack 62 and a driving motor 63. The rack 62 is fixedly arranged on the side wall of the smoking column 51 along the length direction of the smoking column 51, the lifting gear 61 is rotatably arranged on the workbench 3, the lifting gear 61 is meshed with the rack 62, and the driving motor 63 is arranged on the workbench 3 to drive the lifting gear 61 to rotate.

[0039] Reference Figure 3 and Figure 4 A mounting block 7 is provided at the bottom of the workbench 3, and the smoking column 51 is fixedly provided on the mounting block 7. A strip groove 32 is provided on the workbench 3, and the strip groove 32 is located at both ends of the processing groove 31. The strip groove 32 is arranged along the length direction of the workbench 3, and the mounting block 7 is slidably arranged in the strip groove 32. A rotating shaft 8 is rotatably provided at the bottom of the workbench 3, and lifting gears 61 are fixedly provided at both ends of the rotating shaft 8. The lifting gear 61 is rotatably provided on the mounting block 7, and a driving motor 63 is fixedly provided on the mounting block 7, and the output shaft of the driving motor 63 is fixedly connected to one end of the rotating shaft 8.

[0040] When the spot welding is completed, the lifting gear 61 is driven to rotate by the driving motor 63, and the lifting gear 61 drives the rack 62 to move, thereby driving the smoking column 51 to move downward, so that the smoking column 51 moves to the bottom of the base frame 100 or the workbench 3. When the next welding process is carried out, the smoking column 51 is prevented from interfering with the welding operation of the welding robot, thereby improving the welding efficiency.

[0041] Among them, refer to Figure 4 and Figure 5The rotating shaft 8 includes a sleeve 81 and two movable shafts 82. The two movable shafts 82 are respectively slidably inserted into the two ends of the sleeve 81. A limit key 821 is fixedly arranged on the side wall of the movable shaft 82 along the axial direction of the movable shaft 82. A key groove 811 is opened on the inner wall of the sleeve 81 along the axial direction of the sleeve 81. The sleeve 81 is fixedly arranged on the bottom wall of the workbench 3, and the limit key 821 is slidably connected with the key groove 811.

[0042] The bottom wall of the workbench 3 is provided with a telescopic part for driving the two mounting blocks 7 to slide. The telescopic part is a telescopic cylinder 71 fixedly arranged on the bottom wall of the workbench 3. The telescopic cylinder 71 is a double-headed cylinder. The piston rods at both ends of the telescopic cylinder 71 are fixedly connected to the two mounting blocks 7 respectively.

[0043] The telescopic cylinder 71 drives the two mounting blocks 7 to slide, thereby achieving the purpose of adjusting the distance between the two smoking columns 51 to adapt to bottom beams of different sizes; and by adjusting the distance between the two smoking columns 51, the interference with spot welding operations can be reduced while ensuring the smoking effect, thereby improving the welding efficiency.

[0044] Optional, see Figure 4 and Figure 6 A filter tube 511 is arranged on the inner edge of the smoking column 51. The top of the filter tube 511 is connected to the smoking nozzle 512. The filter tube 511 is detachably arranged in the smoking column 51. The smoking nozzle 512 is detachably arranged on the filter tube 511. The side wall of the filter tube 511 is provided with a plurality of filter holes 5111 for filtering solid pollutants, such as cooled metal oxides. A top cover 5113 is threadedly sleeved on the top of the filter tube 511. The top of the filter tube 511 passes through the top cover 5113. The smoking nozzle 512 is threadedly connected to the filter tube 511. When it is necessary to clean the solid pollutants (such as metal oxides) in the filter tube 511, the smoking nozzle 512 and the top cover 5113 are removed, the filter tube 511 is pulled out, and then the pollutants are poured out. The operation is convenient.

[0045] Reference Figure 4 and Figure 6 A positioning groove 5112 is provided on the bottom wall of the filter tube 511, a mesh frame 513 is fixedly provided in the smoking column 51, and a positioning pin 5131 is vertically fixedly provided on the mesh frame 513. After the positioning pin 5131 is inserted into the positioning groove 5112, the position of the filter tube 511 is defined and is located in the middle position of the smoking column 51.

[0046] In addition, refer to Figure 4The smoking mechanism 5 further includes an air intake pipe 52 and a purification assembly 53. One end of the air intake pipe 52 is connected to the bottom of the smoking column 51, and the other end is connected to the purification assembly 53. The air intake pipe 52 is a hose and can be fixed to the bottom wall of the workbench 3. In order to reduce interference, the air intake pipe 52 can be fixed at a position away from the processing tank 31. The purification assembly 53 includes a fan and a purification box. The air intake end of the air intake fan is connected to one end of the purification box, and the other end of the purification box is connected to the air intake pipe 52. Purification materials such as activated carbon are arranged in the purification box.

[0047] The smoke generated by electric welding contains metal oxides. After the smoke enters the filter tube 511 through the smoking nozzle 512, the metal oxides with larger particles are cooled and gathered in the filter tube 511, while the filtered smoke passes through the filter holes 5111 and enters the evolution component through the intake pipe 52; the cooled metal oxides are prevented from entering the intake pipe 52 and accumulating in the intake pipe 52, thereby reducing the intake capacity and causing the smoking efficiency of the smoking nozzle 512 to be reduced.

[0048] Reference Figure 6 The filter tube 511 is rotatably arranged in the smoking column 51, and the smoking nozzle 512 is fixedly arranged on the top of the filter tube 511. A rotating component for driving the filter tube 511 to rotate is arranged in the smoking column 51. The rotating component includes a power motor 91, a power gear 92 and a gear ring 93. The gear ring 93 is fixedly sleeved on the filter tube 511. The power motor 91 is fixedly arranged in the smoking column 51. The power gear 92 is fixedly arranged on the output shaft of the power motor 91. The power gear 92 is meshed with the gear ring 93. The power motor 91 is a servo motor, which is convenient for controlling the rotation angle of the smoking nozzle 512.

[0049] The power motor 91 rotates, thereby driving the filter tube 511 and the smoking nozzle 512 to rotate, thereby achieving the purpose of adjusting the angle of the smoking nozzle 512. During the welding process, the smoking range can be increased, thereby improving the smoking effect.

[0050] Reference Figure 6 and Figure 7 A cleaning member 10 for cleaning the filter holes 5111 is provided in the smoking column 51. The cleaning member 10 includes a brush plate 110 and bristles 120. A dovetail groove 514 is provided on the inner wall of the smoking column 51 along the length direction of the smoking column 51. The cross section of the brush plate 110 is dovetail-shaped. The brush plate 110 is slidably penetrated in the dovetail groove 514 along the length direction of the smoking column 51. The bristles 120 are fixedly arranged on the brush plate 110 for contacting the filter tube 511. The bristles 120 are made of soft material, and can be made of plastic. The bristles 120 can penetrate into the filter holes 5111. If the smoking effect is found to be reduced during the spot welding operation, the power motor 91 can be driven to rotate, and then the filter tube 511 can be driven to rotate, so that the bristles 120 can clean the entire or most of the filter holes 5111 on the filter tube 511, prevent the filter holes 5111 from being blocked, and improve the smoking ability.

[0051] The implementation principle of the embodiment of the present application is as follows: after the worker places the chassis 100 to be welded, namely the main beam 101 and the secondary beam 102, on the workbench 3, the position of the chassis 100 is fixed by the clamping tool 4, and then the smoking column 51 is driven to rise by the lifting assembly 6, so that the smoking column 51 rises from the bottom of the workbench 3 to the spot welding position close to the chassis 100, and the smoking nozzle 512 is kept below the head of the welder; the smoking mechanism 5 is started, and then the main beam 101 and the secondary beam 102 of the chassis 100 can be spot welded. The smoking nozzle 512 is close to the spot welding position, which can absorb the smoke generated by the electric welding in a timely and efficient manner to prevent the smoke from spreading, and the smoking nozzle 512 is located below the head of the worker, so that the smoke is absorbed by the smoking nozzle 512 before it rises to the height of the worker's head, preventing the smoke from being inhaled by the welder, and effectively reducing the impact on the worker's health; and the smoking column 51 is located on one side of the welding position of the chassis 100, which can prevent interference with the electric welding operation.

[0052] The embodiment of the present application also discloses a composite welding method for a truck steel structure chassis.

[0053] A truck steel structure chassis composite welding method comprises the following steps: Clean the surface of the chassis 100 to be welded to remove oil, rust and other impurities to ensure the surface quality of the welding area and reduce the generation of smoke caused by impurities; Place the base frame 100 on the workbench 3 and fix the base frame 100 by clamping the fixture 4; The smoking column 51 is driven to rise by the lifting assembly 6 so that the smoking nozzle 512 is close to the position to be spot welded; The smoking mechanism 5 is started, and the main beam 101 and the sub-beam 102 of the chassis 100 are spot-welded.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A truck steel structure chassis composite welding system, characterized in that: include: Frame (2); A workbench (3) is used to place the chassis (100) to be welded, the workbench (3) is rotatably arranged on the frame (2), the frame (2) is provided with a flipping assembly for driving the workbench (3) to flip, and the workbench (3) is provided with a plurality of processing grooves (31) penetrating the workbench (3); A clamping tool connected to the workbench (3) and used to limit a base frame (100) placed on the workbench (3); A smoking mechanism (5) is arranged on the workbench (3) and is used to absorb smoke generated by spot welding; The smoking mechanism (5) comprises a smoking column (51), which is slidably arranged on the workbench (3) in a direction perpendicular to the workbench (3), the smoking column (51) is hollow, and a smoking nozzle (512) is arranged on the smoking column (51), and a lifting component (6) for driving the smoking column (51) to rise and fall is arranged on the workbench (3).

2. A truck steel structure chassis composite welding system according to claim 1, characterized in that: The smoking columns (51) are arranged in multiple groups, each group comprising two smoking columns (51), the two smoking columns (51) are respectively arranged on both sides of the processing groove (31), and the two smoking columns (51) are distributed along the length direction of the workbench (3).

3. A truck steel structure chassis composite welding system according to claim 2, characterized in that: The lifting assembly (6) comprises a lifting gear (61), a rack (62) and a driving motor (63); the rack (62) is fixedly arranged on the side wall of the smoking column (51) along the length direction of the smoking column (51); the lifting gear (61) is rotatably arranged on the workbench (3); the lifting gear (61) is meshed with the rack (62); and the driving motor (63) is arranged on the workbench (3) to drive the lifting gear (61) to rotate.

4. A truck steel structure chassis composite welding system according to claim 3, characterized in that: A mounting block (7) is provided at the bottom of the workbench (3), and the smoking column (51) is fixedly provided on the mounting block (7). A rotating shaft (8) is rotatably provided at the bottom of the workbench (3), and lifting gears (61) are fixedly provided at both ends of the rotating shaft (8). The lifting gears (61) are rotatably provided on the mounting block (7), and the output shaft of the driving motor (63) is fixedly connected to one end of the rotating shaft (8).

5. A truck steel structure chassis composite welding system according to claim 4, characterized in that: The rotating shaft (8) comprises a sleeve (81) and two movable shafts (82), the two movable shafts (82) are respectively slidably arranged at the two ends of the sleeve (81), a limit key (821) is fixedly arranged on the side wall of the movable shaft (82) along the axial direction of the movable shaft (82), the inner wall of the sleeve (81) is provided with a key groove (811) along the axial direction of the sleeve (81), and the limit key (821) is slidably connected to the key groove (811); the bottom wall of the workbench (3) is provided with a telescopic part for driving the two mounting blocks (7) to slide.

6. The truck steel structure chassis composite welding system according to claim 1, characterized in that: A filter tube (511) is arranged in the smoking column (51), the top of the filter tube (511) is connected to the smoking nozzle (512), and the side wall of the filter tube (511) is provided with a plurality of filter holes (5111); the smoking mechanism (5) also includes an air intake pipe (52) and a purification component (53), one end of the air intake pipe (52) is connected to the bottom of the smoking column (51), and the other end is connected to the purification component (53).

7. A truck steel structure chassis composite welding system according to claim 6, characterized in that: The filter tube (511) is rotatably disposed in the smoking column (51), the smoking nozzle (512) is fixedly disposed on the top of the filter tube (511), and a rotating component for driving the filter tube (511) to rotate is disposed in the smoking column (51).

8. A truck steel structure chassis composite welding system according to claim 7, characterized in that: The filter tube (511) is detachably arranged in the smoking column (51), and the smoking nozzle (512) is detachably arranged on the filter tube (511).

9. A truck steel structure chassis composite welding system according to claim 6, characterized in that: A cleaning piece (10) for cleaning the filter hole (5111) is arranged in the smoking column (51).

10. A welding method for a truck steel structure chassis composite welding system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Cleaning the surface of the chassis (100) to be welded to remove oil stains, rust and other impurities, ensuring the surface quality of the welding area and reducing the generation of smoke caused by impurities; Placing the base frame (100) on the workbench (3) and fixing the base frame (100) in position by means of a clamping tool; The smoking column (51) is driven to rise by the lifting assembly (6) so that the smoking nozzle (512) is close to the position to be spot welded; The smoking mechanism (5) is started, and spot welding is performed on the main beam (101) and the auxiliary beam (102) of the base frame (100).

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