A welding and processing system for garbage truck bodies

Abstract

This application relates to the field of garbage truck body welding technology, and discloses a garbage truck body welding system, including a welding support mechanism, on which a symmetrical inner welding mechanism and a balanced conveying mechanism are installed; the welding support mechanism includes a base, rollers, columns, track grooves, bidirectional lead screws and limiting blocks, used to support and center the bottom plate and side plates of the truck body; the symmetrical inner welding mechanism includes a crossbeam, threaded rod, track rod, connecting plate, lifting seat, support plate, swing rod, adjusting seat and welding gun, and cooperates with a slide, bidirectional toothed rod, incomplete toothed ring and adjusting screw, used to adjust the height, position and angle of the welding gun to achieve synchronous welding on both sides of the truck body; the balanced conveying mechanism includes a main conveying roller, baffle, first pulley, slider, lifting rod, rotating shaft, auxiliary conveying roller, limiting plate, third pulley, square rod, second pulley, fixing plate, spring and belt, used to synchronously convey and limit the bottom plate and two side plates of the truck body.

Description

Technical Field

[0001] This invention belongs to the field of vehicle body welding technology, specifically relating to a vehicle body welding processing system for garbage trucks. Background Technology

[0002] Garbage truck bodies are typically assembled from sheet metal components such as the floor and side panels, which are then welded together. The quality of this welding directly affects the overall strength, sealing performance, and subsequent assembly and usability of the truck body. During garbage truck manufacturing, the welding process generally involves several steps, including panel positioning, support, welding, and conveying, to achieve continuous structural forming. Therefore, the operational stability of the welding equipment and the coordination between these steps significantly impact the overall welding quality.

[0003] In the current process of welding garbage truck bodies, it is usually necessary to support and position the body panels and coordinate with the moving conveyor to complete the continuous welding operation. However, at the system operation level of the body welding process, the existing equipment usually has poor coordination between the welding operation and the conveying operation when welding the body, resulting in insufficient overall positional stability of the body during the moving welding process, which can easily affect the continuity of the body welding process and the welding quality. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a welding processing system for garbage truck bodies that can coordinate welding and conveying operations during the welding process, thereby improving the overall positional stability of the truck body during the welding process.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A welding system for a garbage truck body includes a welding support mechanism for supporting and positioning the bottom plate and two side plates to be welded on the body. The welding support mechanism is equipped with a symmetrical inner welding mechanism and a balanced conveying mechanism. The symmetrical inner welding mechanism is used to simultaneously weld the two sides of the interior of the body to reduce deformation during the welding process. The balanced conveying mechanism is used to simultaneously convey the bottom plate and two side plates to maintain the relative position stability of the body during the welding process.

[0007] Furthermore, the welding support mechanism includes a base, on which rollers are uniformly rotatably mounted on the upper surface. Vertical columns are fixed at the centers of both sides of the base. The surface of the base is symmetrically provided with track grooves. A bidirectional lead screw is rotatably mounted inside the track grooves, parallel to the roller axis. Limiting blocks are symmetrically slidably mounted inside the track grooves. Two limiting blocks rotate on different threaded surfaces of the bidirectional lead screw, and are positioned between and above adjacent rollers. The distance between the two limiting blocks is adjusted by rotating the bidirectional lead screw, thereby achieving centering and limiting of carriages of different sizes.

[0008] Furthermore, the symmetrical internal welding mechanism includes a crossbeam fixed above the two columns, with a threaded rod vertically rotating through the center of the crossbeam surface and a rotating handle at the top of the threaded rod; symmetrical rail rods are fixed to the bottom of the crossbeam, and connecting plates are fixed to the bottom of the two rail rods; lifting seats are slidably installed on the surfaces of the two rail rods, and the lifting seats are screwed onto the surface of the threaded rods so that rotating the threaded rods drives the lifting seats to move up and down along the rail rods.

[0009] Furthermore, the bottom of the lifting seat is symmetrically provided with support plates, and the bottom of the lifting seat is symmetrically rotatably mounted with swing rods. The rotation axes of the two swing rods are respectively placed inside the two support plates. The bottom of the swing rods is rotatably mounted with adjustment seats, and welding guns are fixed on the surface of the adjustment seats. The adjustment seats and the swing rods are fixed together by bolts, so that the position and angle of the two welding guns can be adjusted by the cooperation of the swing rods and the lifting seat, so as to realize the synchronous welding of the two side panels of the carriage.

[0010] Furthermore, a slide rail is vertically opened on the inner side of the lifting seat, and a bidirectional toothed rod is slidably installed on the inner side of the slide rail. An incomplete toothed ring is fixed on the rotation shaft of the swing rod, and the bidirectional toothed rod meshes with two incomplete toothed rings respectively.

[0011] Furthermore, an adjusting screw is rotatably installed inside the upper part of the lifting seat. The bottom of the adjusting screw is screwed into the inner side of the incomplete toothed ring. The incomplete toothed ring has an internal threaded hole that matches the adjusting screw. The bidirectional toothed rod slides vertically due to the restriction of the slide rail, so as to synchronously drive the two incomplete toothed rings to rotate when the adjusting screw rotates, and drive the two swing rods to swing synchronously.

[0012] Furthermore, the equalizing conveying mechanism includes a main conveying roller that rotates horizontally between the bottoms of two columns. The upper surface of the main conveying roller is in contact with the floor of the carriage. Baffles are symmetrically installed on the surface of the main conveying roller by bolts. The two baffles are respectively placed on the outside of the side panels of the carriage to limit the side panels during conveying. A first pulley is provided at both ends of the main conveying roller.

[0013] Furthermore, a groove is vertically formed on the upper surface of the column, and the equalizing conveying mechanism also includes a slider that slides vertically inside the groove. A lifting rod is vertically fixed to the top of the slider, and the lifting rod passes through the upper surface of the column. A rotating shaft is horizontally mounted on the surface of the slider, and the rotating shaft is placed parallel to the main conveying roller directly above it.

[0014] Furthermore, an auxiliary conveying roller is provided on the inner end of the rotating shaft. The auxiliary conveying roller is positioned above the side panel of the carriage. Limiting plates are symmetrically installed on the surface of the auxiliary conveying roller by bolts. The two limiting plates are respectively positioned on the inner and outer sides of the side panel to convey and limit the top of the side panel through the auxiliary conveying roller and the limiting plates.

[0015] Furthermore, a third pulley is provided at the outer end of the rotating shaft. The third pulley is located outside the column. A square rod slides laterally through the surface of the column. The square rod is perpendicular to the rotating shaft. A second pulley is rotatably mounted at one end of the square rod. A belt is fitted on the surface of the first, second, and third pulleys. A fixing plate is provided at the end of the square rod near the second pulley. A spring is fitted on the surface of the square rod. The spring applies an outward pushing force to the fixing plate, causing the second pulley to move outward and keeping the belt taut. At the same time, the belt drives the third pulley to rotate, thereby driving the auxiliary conveyor roller to rotate and keeping the auxiliary conveyor roller in close contact with the top of the side plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This application establishes a welding support mechanism for supporting and positioning the bottom plate and two side plates of the truck body during welding. Furthermore, it incorporates a symmetrical inner welding mechanism for synchronous welding of both sides of the truck body's interior, and a balanced conveying mechanism for synchronously conveying the bottom plate and two side plates. This allows the welding and conveying operations to coordinate continuously along the same moving path of the truck body during the welding process. Compared to existing garbage truck body welding processes where the coordination between welding and conveying operations is poor, this application can simultaneously address the support and positioning, synchronous conveying, and synchronous welding of the truck body at the system operation level, thereby improving the overall coordination of the truck body during the moving welding process.

[0017] This application uses a welding support mechanism to support and position the bottom plate and two side plates of the carriage, and a balanced conveying mechanism to synchronously convey and coordinate the bottom plate and two side plates. This allows the carriage to not only move along a predetermined path during the welding process, but also maintain the relative position stability between the bottom plate and the side plates during the conveying process. Compared with the problem of insufficient overall positional stability of the carriage during the welding process in the prior art, this application improves the stability of the carriage during the welding process through a systematic support, limiting and conveying coordination scheme, thereby providing a foundation for the stable development of the continuous welding process.

[0018] This application utilizes a symmetrical internal welding mechanism to simultaneously weld both sides of the truck body's interior. This mechanism, in conjunction with a balanced conveying mechanism, works in tandem during the truck body's movement and welding process, enabling simultaneous welding of both sides while the truck body is being transported. Compared to existing technologies where welding and conveying processes are difficult to coordinate effectively, this application improves the continuity of the welding process by combining simultaneous welding with simultaneous conveying, thereby enhancing the overall stability and consistency of the garbage truck body welding process. Attached Figure Description

[0019] Figure 1 This is a frontal three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the welding support mechanism of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the base of the present invention; Figure 5 This is a three-dimensional structural diagram of the symmetrical inner welding mechanism of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the cross-sectional structure; Figure 7 This is a three-dimensional structural diagram of the equalization conveying mechanism of the present invention; Figure 8 This is a three-dimensional structural diagram of the slider and rotating shaft mounting of the present invention.

[0020] The attached diagram lists the components represented by each number as follows: 1. Welding support mechanism; 11. Base; 12. Roller; 13. Column; 131. Slide groove; 14. Track groove; 15. Bidirectional lead screw; 16. Limiting block; 2. Symmetrical internal welding mechanism; 21. Crossbeam; 22. Threaded rod; 221. Rotary handle; 23. Track rod; 24. Connecting plate; 25. Lifting seat; 251. Slide rail; 26. Support plate; 27. Swing rod; 28. Adjusting seat; 29. ​​Welding torch; 210. Incomplete toothed ring; 211. Double-sided toothed rod; 212. Adjusting screw; 3. Balanced conveying mechanism; 31. Main conveying roller; 32. Baffle; 33. First pulley; 34. Slider; 35. Lifting rod; 36. Rotating shaft; 37. Secondary conveying roller; 38. Limiting plate; 39. Third pulley; 310. Square rod; 311. Second pulley; 312. Fixing plate; 313. Spring; 314. Belt. Detailed Implementation

[0021] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0022] Example 1: See Figure 1-8 A garbage truck body welding system includes a welding support mechanism 1, which supports and positions the bottom plate and two side plates of the truck body for welding. The welding support mechanism 1 is equipped with a symmetrical inner welding mechanism 2 and a balanced conveying mechanism 3. The symmetrical inner welding mechanism 2 performs simultaneous welding on both sides of the truck body to reduce deformation during the welding process. The balanced conveying mechanism 3 simultaneously conveys the bottom plate and two side plates to maintain the relative position stability of the truck body during the moving welding process. During the garbage truck body welding process, if the bottom plate and two side plates lack stable support and positioning during conveying, and the welding position and conveying position are difficult to coordinate continuously, the relative position of the plates is prone to change during the moving welding process, thus affecting the stable unfolding of the continuous welding process. Based on the above processing scenario, the welding system... The supporting mechanism 1 is arranged as an integral load-bearing foundation, the symmetrical inner welding mechanism 2 is arranged in the welding area inside the carriage above the welding supporting mechanism 1, and the balanced conveying mechanism 3 is arranged in the carriage conveying path of the welding supporting mechanism 1, so that the carriage floor plate and the two side plates form a continuous cooperation during the support, limiting, conveying and synchronous inner welding process. In use, the carriage floor plate to be welded is first placed on the welding supporting mechanism 1, and then the two side plates are set on both sides of the carriage floor plate. Then, the carriage floor plate and the two side plates are positioned by the welding supporting mechanism 1, and the carriage floor plate and the two side plates are clamped and cooperated by the balanced conveying mechanism 3. After the carriage floor plate and the two side plates are in a stable conveying state, the symmetrical inner welding mechanism 2 performs synchronous welding on both sides of the carriage, so that the carriage completes a continuous welding process while moving along the welding path.

[0023] See Figure 1-4The welding support mechanism 1 includes a base 11, on which rollers 12 are uniformly rotatably mounted on the upper surface. Columns 13 are vertically fixed at the centers of both sides of the base 11. Track grooves 14 are symmetrically formed on the surface of the base 11. A bidirectional lead screw 15 is rotatably mounted inside the track groove 14, parallel to the axis of the rollers 12. Limiting blocks 16 are symmetrically slidably mounted inside the track groove 14. Two limiting blocks 16 rotate on different threaded surfaces of the bidirectional lead screw 15, and are positioned between and above adjacent rollers 12. The distance between the two limiting blocks 16 is adjusted by rotating the bidirectional lead screw 15, achieving centering and limiting of carriages of different sizes. The base 11 is used to install and support the entire welding structure. The rollers 12 are distributed along the carriage conveying direction on the upper surface of the base 11. The carriage floor is provided with rolling support. Two columns 13 are located at the center of both sides of the base 11 to form an installation foundation for the symmetrical inner welding mechanism 2 above and the balanced conveying mechanism 3 on the side. After the carriage is placed on the roller 12, the bidirectional screw 15 is rotated. When the bidirectional screw 15 rotates, it drives two limit blocks 16 to move towards or away from each other in the corresponding track groove 14. The two limit blocks 16 are arranged upward between the roller 12, which can form a lateral limit on the entire carriage from the corresponding positions on both sides of the carriage floor, so that the carriage remains centered during subsequent conveying and welding. After the position adjustment of the limit blocks 16 is completed, the lower surface of the carriage floor contacts multiple rollers 12, and the two side plates are located on both sides of the carriage floor and between the two columns 13, thus completing the support and positioning preparation before the use of the entire system.

[0024] See Figure 1-8 In a typical use of the entire system, the welding support mechanism 1 first supports the initial placement of the car body floor and two side panels. Then, the equalizing conveying mechanism 3 synchronously conveys the car body floor and two side panels, allowing the car body to move stably along the direction of the roller 12 and the main conveying roller 31. Next, the symmetrical inner welding mechanism 2 performs synchronous welding at the corresponding welding positions on both sides inside the car body. In this process, the welding support mechanism 1 provides bottom rolling support and lateral centering limit, the equalizing conveying mechanism 3 provides synchronous conveying of the floor and side panels and top pressing limit, and the symmetrical inner welding mechanism 2 provides upper height adjustment and left and right synchronous welding. The various structures cooperate sequentially around the same car body welding path so that the car body can complete the welding processing on both sides inside while in motion.

[0025] Example 2: See Figure 1-6The symmetrical inner welding mechanism 2 includes a crossbeam 21 fixed above the two columns 13. A threaded rod 22 is vertically rotatably passed through the center of the surface of the crossbeam 21, and a rotating handle 221 is provided at the top of the threaded rod 22. Track rods 23 are symmetrically fixed at the bottom of the crossbeam 21. Connecting plates 24 are fixed at the bottom of the two track rods 23. Lifting seats 25 are slidably installed on the surface of the two track rods 23. The lifting seats 25 are screwed onto the surface of the threaded rods 22 so that the lifting seats 25 can be moved up and down along the track rods 23 by rotating the threaded rods 22. After the carriage enters the welding area, in order to avoid the welding position from deviating from the weld position inside the carriage, the symmetrical inner welding mechanism 2 needs to be adjusted in an overall lifting manner according to the height of the area to be welded inside the side panel of the carriage. The crossbeam 21 is fixed above the two columns 13. The crossbeam 21 is located above the carriage conveying path so that the threaded rod 22, the rail rod 23 and the lifting seat 25 can be located above the welding area inside the carriage. In use, rotating the handle 221 drives the threaded rod 22 to rotate around the center position of the crossbeam 21. Since the lifting seat 25 is screwed to the threaded rod 22 and the lifting seat 25 is simultaneously limited and guided by the two rail rods 23, the lifting seat 25 moves up or down synchronously along the two rail rods 23. The connecting plate 24 is fixed at the lower position of the two rail rods 23 to maintain a stable relative distance between the two rail rods 23. This allows the lifting seat 25 to move accurately below the crossbeam 21 to the height corresponding to the welding position of the carriage.

[0026] See Figure 1-6 The bottom of the lifting seat 25 is symmetrically provided with support plates 26. Swing rods 27 are symmetrically rotatably mounted on the bottom of the lifting seat 25. The rotation axes of the two swing rods 27 are respectively located inside the two support plates 26. An adjusting seat 28 is rotatably mounted on the bottom of the swing rods 27. A welding torch 29 is fixed to the surface of the adjusting seat 28. The adjusting seat 28 and the swing rods 27 are fixed together with bolts. The position and angle of the two welding torches 29 can be adjusted by the cooperation of the swing rods 27 and the lifting seat 25 to achieve synchronous welding of the two side panels of the carriage. After the lifting seat 25 reaches the corresponding height, the two welding torches 29 need to be oriented towards the two sides of the carriage interior. At the welding position, support plates 26 are arranged on both sides of the bottom of the lifting seat 25 to support the rotating installation part of the swing rod 27. The two swing rods 27 are located on the left and right sides of the bottom of the lifting seat 25, respectively. Two adjusting seats 28 are installed at the bottom of the two swing rods 27, respectively. Two welding guns 29 are fixed on the surface of the two adjusting seats 28, so that after the lifting seat 25 is raised and lowered as a whole, the two welding guns 29 can move synchronously to the corresponding height with the lifting seat 25. After the angle adjustment is completed, the two welding guns 29 correspond to the welding areas of the two side panels inside the carriage, so that the welding of both sides can be completed synchronously during the carriage transportation process.

[0027] See Figure 1-6The lifting seat 25 has a vertically opened slide 251 on the inner side, and a two-way toothed rod 211 is slidably installed on the inner side of the slide 251. An incomplete toothed ring 210 is fixed on the rotation shaft of the swing rod 27, and the two-way toothed rod 211 meshes with the two incomplete toothed rings 210 respectively.

[0028] See Figure 1-6 An adjusting screw 212 is rotatably mounted inside the upper part of the lifting seat 25. The bottom of the adjusting screw 212 is threaded into the inner side of the incomplete toothed ring 210. The incomplete toothed ring 210 has an internal threaded hole that matches the adjusting screw 212. The bidirectional toothed rod 211 slides vertically, restricted by the slide rail 251, so that when the adjusting screw 212 rotates, it synchronously drives the two incomplete toothed rings 210 to rotate, and drives the two swing rods 27 to swing synchronously. When the two welding torches 29 need to be synchronously adjusted around the welding direction on both sides of the carriage, the adjusting screw 212 is located inside the upper part of the lifting seat 25, the bidirectional toothed rod 211 is located inside the slide rail 251 and slides vertically with restriction, and the two incomplete toothed rings 210 are respectively fixed at the rotation axis positions of the two swing rods 27, and the two incomplete toothed rings 210 are respectively engaged with the bidirectional toothed rod 211. A synchronous oscillating adjustment path is formed, consisting of an adjusting screw 212, a double-sided rack 211, an incomplete gear ring 210, and an oscillating rod 27. In use, the adjusting screw 212 rotates and, through its thread engagement with the inner side of the incomplete gear ring 210, drives the double-sided rack 211 to change its vertical position in the slide rail 251. During the vertical movement, the double-sided rack 211 simultaneously engages with the two incomplete gear rings 210, causing the two incomplete gear rings 210 to rotate synchronously. This, in turn, drives the two oscillating rods 27 to oscillate synchronously around their respective rotation axes. The two adjusting seats 28 and the two welding torches 29 adjust their directions synchronously with the oscillating rods 27. After the two welding torches 29 are adjusted to an angle that matches the welding positions on both sides of the carriage, the two welding torches 29 can simultaneously perform welding along both sides of the carriage during continuous transport, thus coordinating the welding action with the carriage's movement path.

[0029] Example 3: See Figure 7-8The equalizing conveying mechanism 3 includes a main conveying roller 31 that rotates horizontally between the bottoms of two columns 13. The upper surface of the main conveying roller 31 contacts the floor of the carriage. Baffles 32 are symmetrically installed on the surface of the main conveying roller 31 by bolts. The two baffles 32 are respectively placed on the outside of the side panels of the carriage to limit the side panels during conveying. First pulleys 33 are provided at both ends of the main conveying roller 31. When the carriage completes its initial positioning and enters the conveying and welding stage, it is necessary to achieve synchronous conveying coordination between the floor of the carriage and the two side panels to avoid the floor of the carriage from being moved forward. The side plates shift relative to each other; the main conveyor roller 31 is arranged between the bottom of the two columns 13, the main conveyor roller 31 is located below the car floor and in contact with the lower surface of the car floor, and two baffles 32 are installed on both sides of the surface of the main conveyor roller 31 and located outside the two side plates, so as to form a lateral limiting fit on the outside of the two side plates when the main conveyor roller 31 drives the car floor to move in the forward direction; the first pulley 33 is set at both ends of the main conveyor roller 31 to transmit the rotation state of the main conveyor roller 31 to the subsequent conveying fit structure.

[0030] See Figure 7-8 A groove 131 is vertically formed above the surface of the column 13. The equalizing conveying mechanism 3 also includes a slider 34 that slides vertically inside the groove 131. A lifting rod 35 is vertically fixed to the top of the slider 34 and passes through the upper surface of the column 13. A rotating shaft 36 is horizontally mounted on the surface of the slider 34 and is positioned parallel to the main conveying roller 31 directly above it. Under different side panel heights, in order to keep the top conveying position corresponding to the top of the side panel, the groove 131 and the slider 34 are used to adjust the top. The height of the conveying part is adjusted; the chute 131 is opened above the surface of the column 13, the slider 34 slides vertically along the chute 131, the lifting rod 35 is fixed to the top of the slider 34 and passes through the upper surface of the column 13 to lift and adjust the slider 34, and the rotating shaft 36 is horizontally installed on the surface of the slider 34 and is parallel to the main conveying roller 31 above it. Thus, when the slider 34 moves up and down, the rotating shaft 36 can rise and fall synchronously with the slider 34 to adapt to the height position of the top of the side panel of the carriage.

[0031] See Figure 7-8An auxiliary conveying roller 37 is provided on the inner end of the rotating shaft 36. The auxiliary conveying roller 37 is positioned above the side panel of the carriage. Limiting plates 38 are symmetrically installed on the surface of the auxiliary conveying roller 37 by bolts. The two limiting plates 38 are respectively positioned on the inner and outer sides of the side panel to convey and limit the top of the side panel through the auxiliary conveying roller 37 and the limiting plates 38. After the rotating shaft 36 is adjusted to the corresponding height by the slider 34, the auxiliary conveying roller 37 is located at the top of the side panel of the carriage. The two limiting plates 38 are installed on the surface of the auxiliary conveying roller 37 and are respectively located on the inner and outer sides of the corresponding position on the top of the side panel. Thus, when the auxiliary conveying roller 37 contacts the top of the side panel, it can not only form a rolling conveying fit with the top of the side panel along the conveying direction, but also form a clamping and limiting on both sides of the top of the side panel through the two limiting plates 38, thereby keeping the top of the side panel relatively stable during the forward movement of the carriage.

[0032] See Figure 7-8 A third pulley 39 is provided at the outer end of the rotating shaft 36. The third pulley 39 is located outside the column 13. A square rod 310 slides laterally through the surface of the column 13. The square rod 310 is perpendicular to the rotating shaft 36. A second pulley 311 is rotatably mounted on one end of the square rod 310. A belt 314 is fitted on the surfaces of the first pulley 33, the second pulley 311, and the third pulley 39. A fixing plate 312 is provided on the surface of the square rod 310 near the second pulley 311. A spring 313 is fitted on the surface of the square rod 310. 313 applies an outward thrust to the fixed plate 312, causing the second pulley 311 to move outward and the belt 314 to be taut. Simultaneously, the belt 314 drives the third pulley 39 to rotate, thereby driving the auxiliary conveyor roller 37 to rotate and maintaining a tight contact between the auxiliary conveyor roller 37 and the top of the side plate. The third pulley 39 is located at the outer end of the rotating shaft 36. The second pulley 311 is mounted on the side of the column 13 via a square rod 310, which slides laterally through the column 13. The fixed plate 312 is... A spring 313 is placed at the end of the square rod 310 near the second pulley 311, and is sleeved on the surface of the square rod 310, applying an outward pushing force to the fixing plate 312. This ensures that the second pulley 311 always has a tendency to move away from the column 13, thus maintaining the tension of the belt 314. During the rotation of the main conveyor roller 31, the first pulleys 33 at both ends of the main conveyor roller 31 rotate synchronously. The belt 314 transmits the rotation of the first pulleys 33 to the second pulley 311 and the third pulley 39. The third pulley 39 then drives the rotating shaft 312. The main conveyor roller 31 and the auxiliary conveyor roller 37 rotate, pressing the top of the side plate while rotating. The main conveyor roller 31 conveys the bottom plate of the carriage, and the auxiliary conveyor roller 37 conveys the top of the side plate synchronously. The baffle 32 limits the outer side of the side plate, the limiting plate 38 limits the top of the side plate, and the limiting block 16 centers and constrains the overall position of the carriage. This ensures that the bottom plate of the carriage and the two side plates maintain a coordinated forward movement throughout the welding process and form a continuous cooperation with the synchronous welding action of the two welding guns 29 above.

[0033] The working principle of this invention is as follows: In use, the bottom plate of the carriage to be welded and the two side plates are first placed on the welding support mechanism 1. The bottom plate of the carriage is supported on the rollers 12 that are uniformly rotated and installed on the upper surface of the base 11, and the two side plates are located on both sides of the bottom plate of the carriage. Then, the bidirectional lead screw 15 inside the track groove 14 is rotated according to the width of the carriage, so that the two limiting blocks 16, which are respectively screwed on different thread surfaces of the bidirectional lead screw 15, slide towards or away from each other along the track groove 14. Since the limiting blocks 16 are placed between two adjacent rollers 12 and are higher than the rollers 12, the two limiting blocks 16 can center and limit the carriage placed on the rollers 12, thereby completing the support and positioning of the carriage before welding.

[0034] After the carriage completes its initial positioning, the position of the equalizing conveying mechanism 3 is adjusted. The carriage floor is placed on the upper surface of the main conveying roller 31 between the bottoms of the two columns 13. Two baffles 32 installed on the surface of the main conveying roller 31 are located on the outer side of the carriage side panel to limit the movement of the side panel during the conveying process. Next, the slider 34 is moved up and down along the groove 131 on the surface of the column 13 according to the height of the side panel. The slider 34 drives the lifting rod 35 and the rotating shaft 36 to rise and fall synchronously, so that the auxiliary conveying roller 37 at the inner end of the rotating shaft 36 moves to the top position of the carriage side panel. The auxiliary conveying roller 37 is mounted on the surface of the auxiliary conveying roller 37. Two limiting plates 38 are located on the inner and outer sides of the side plate respectively to limit the top of the side plate. During this process, the square rod 310 slides laterally through the surface of the column 13. The second pulley 311, which is rotatably mounted at one end of the square rod 310, is connected to the first pulley 33 and the third pulley 39 through the belt 314. The spring 313 on the surface of the square rod 310 applies an outward pushing force to the fixing plate 312, so that the second pulley 311 maintains the outward movement tendency and the belt 314 is in a taut state, thereby ensuring that the third pulley 39 can be stably stressed, and thus the auxiliary conveying roller 37 maintains a pressing contact with the top of the side plate.

[0035] After the car body position adjustment is completed, the symmetrical inner welding mechanism 2 begins to adjust the welding position. First, rotate the rotating handle 221 on the top of the crossbeam 21. The rotating handle 221 drives the threaded rod 22 to rotate. Since the lifting seat 25 is screwed onto the surface of the threaded rod 22, the lifting seat 25 slides up and down along the two track rods 23. The track rods 23 and the connecting plate 24 guide and stabilize the movement of the lifting seat 25, so that the lifting seat 25 can be adjusted to the height position corresponding to the welding part of the car body.

[0036] After the lifting seat 25 is adjusted to a suitable height, the included angle and lateral orientation of the two welding torches 29 are adjusted synchronously. During this process, the adjusting screw 212 installed inside the upper part of the lifting seat 25 is rotated. The bottom of the adjusting screw 212 is screwed into the internal threaded hole on the inner side of the two incomplete toothed rings 210. As the adjusting screw 212 rotates, the bidirectional toothed rod 211 slides vertically inside the slide rail 251. The bidirectional toothed rod 211 meshes with the two incomplete toothed rings 210 respectively, thereby driving the two incomplete toothed rings 210 to rotate synchronously. Since the two incomplete toothed rings 210 are fixed on the rotation axis of the two swing rods 27, the two swing rods 27 swing synchronously. The adjusting seat 28, which is rotated at the bottom of the swing rods 27, rotates synchronously, thereby driving the two welding torches 29 fixed on the surface of the adjusting seat 28 to adjust their angle and orientation synchronously, so that the two welding torches 29 correspond to the welding positions on both sides of the carriage. The support plate 26 plays a supporting role in the installation and rotation of the swing rods 27 during this process.

[0037] Welding then begins. During welding, the main conveyor roller 31 contacts the car floor and drives the car forward. The first pulley 33 rotates synchronously with the main conveyor roller 31. The first pulley 33 drives the second pulley 311 and the third pulley 39 to rotate via the belt 314. The third pulley 39 then drives the rotating shaft 36 and the auxiliary conveyor roller 37 to rotate synchronously. Since the auxiliary conveyor roller 37 is pressed against the top of the car side panel, it can cooperate with the main conveyor roller 31 to synchronously convey the car floor and the two side panels. During the conveying process, the baffle 32 limits the outer side of the side panel, the limiting plate 38 limits the top of the side panel, and the limiting block 16 limits the centering of the entire car, thereby maintaining the relative position stability of the car during the moving welding process.

[0038] During the continuous transport of the truck body, two welding torches 29 located on both sides of the bottom of the lifting seat 25 simultaneously weld the inside sides of the truck body. Since the two welding torches 29 are synchronously adjusted and coordinated through the swing rod 27, the adjusting seat 28, the lifting seat 25, the threaded rod 22, the double-sided toothed rod 211 and the incomplete toothed ring 210, the two welding torches 29 can perform synchronous welding on the inside at the same height and in a relatively symmetrical angle, thereby completing a typical garbage truck body welding process and reducing the deformation of the truck body during the welding process.

[0039] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A welding processing system for the body of a garbage truck, comprising a welding support mechanism (1), characterized in that: The welding support mechanism (1) is used to support and position the bottom plate and two side plates of the carriage to be welded. The welding support mechanism (1) is equipped with a symmetrical inner welding mechanism (2) and a balanced conveying mechanism (3). The symmetrical inner welding mechanism (2) is used to perform synchronous welding on both sides of the carriage interior to reduce the deformation of the carriage during the welding process. The balanced conveying mechanism (3) is used to transport the bottom plate and two side plates of the carriage synchronously to maintain the relative position stability of the carriage during the moving welding process.

2. The garbage truck body welding system according to claim 1, characterized in that: The welding support mechanism (1) includes a base (11), on which rollers (12) are uniformly rotatably mounted. Columns (13) are vertically fixed at the center of both sides of the base (11). Track grooves (14) are symmetrically opened on the surface of the base (11). A bidirectional screw (15) is rotatably mounted inside the track groove (14). The bidirectional screw (15) is parallel to the axis of the roller (12). Limiting blocks (16) are symmetrically slidably mounted inside the track groove (14). The two limiting blocks (16) rotate on different thread surfaces of the bidirectional screw (15). The limiting blocks (16) are placed between two adjacent rollers (12) and are higher than the rollers (12) so that the distance between the two limiting blocks (16) can be adjusted by the engagement of the bidirectional screw (15) to achieve centering and limiting of carriages of different sizes.

3. The garbage truck body welding system according to claim 1, characterized in that: The symmetrical internal welding mechanism (2) includes a crossbeam (21) fixed above the two columns (13). A threaded rod (22) is vertically rotatably passed through the center of the surface of the crossbeam (21). A rotating handle (221) is provided at the top of the threaded rod (22). Track rods (23) are symmetrically fixed at the bottom of the crossbeam (21). A connecting plate (24) is fixed at the bottom of the two track rods (23). A lifting seat (25) is slidably installed on the surface of the two track rods (23). The lifting seat (25) is screwed onto the surface of the threaded rod (22) so that the lifting seat (25) can move up and down along the track rod (23) by rotating the threaded rod (22).

4. The garbage truck body welding system according to claim 3, characterized in that: The bottom of the lifting seat (25) is symmetrically provided with support plates (26), and the bottom of the lifting seat (25) is symmetrically and rotatably installed with swing rods (27). The rotation axes of the two swing rods (27) are respectively placed inside the two support plates (26). The bottom of the swing rods (27) is rotatably installed with adjustment seats (28), and welding guns (29) are fixed on the surface of the adjustment seats (28). The adjustment seats (28) and the swing rods (27) are fixed together by bolts so that the position and angle of the two welding guns (29) can be adjusted by the cooperation of the swing rods (27) and the lifting seat (25) to achieve synchronous welding of the two side panels of the carriage.

5. The garbage truck body welding system according to claim 4, characterized in that: The lifting seat (25) has a vertically opened slide (251) on the inner side, and a two-way toothed rod (211) is slidably installed on the inner side of the slide (251). An incomplete toothed ring (210) is fixed on the rotation shaft of the swing rod (27), and the two-way toothed rod (211) meshes with the two incomplete toothed rings (210) respectively.

6. The garbage truck body welding system according to claim 5, characterized in that: An adjusting screw (212) is rotatably installed inside the lifting seat (25). The bottom of the adjusting screw (212) is screwed into the inner side of the incomplete toothed ring (210) by a thread. The incomplete toothed ring (210) has an internal threaded hole that is compatible with the adjusting screw (212). The bidirectional toothed rod (211) is restricted by the slide rail (251) to slide vertically so as to drive the two incomplete toothed rings (210) to rotate synchronously when the adjusting screw (212) rotates, and drive the two swing rods (27) to swing synchronously.

7. The garbage truck body welding system according to claim 1, characterized in that: The equalization conveying mechanism (3) includes a main conveying roller (31) that rotates horizontally between the bottoms of two columns (13). The upper surface of the main conveying roller (31) is in contact with the bottom plate of the carriage. The surface of the main conveying roller (31) is symmetrically equipped with baffles (32) by bolts. The two baffles (32) are respectively placed on the outside of the side plate of the carriage to limit the side plate during conveying. Both ends of the main conveying roller (31) are provided with first pulleys (33).

8. The garbage truck body welding system according to claim 7, characterized in that: A groove (131) is vertically opened above the surface of the column (13). The equalization conveying mechanism (3) also includes a slider (34) that slides vertically inside the groove (131). A lifting rod (35) is vertically fixed at the top of the slider (34). The lifting rod (35) passes through the upper surface of the column (13). A rotating shaft (36) is horizontally mounted on the surface of the slider (34). The rotating shaft (36) is placed parallel to the main conveying roller (31) directly above it.

9. The garbage truck body welding system according to claim 8, characterized in that: The inner end of the rotating shaft (36) is provided with a secondary conveying roller (37). The secondary conveying roller (37) is placed above the side panel of the carriage. The surface of the secondary conveying roller (37) is symmetrically installed with limiting plates (38) by bolts. The two limiting plates (38) are respectively placed on the inner and outer sides of the side panel to convey and limit the top of the side panel through the secondary conveying roller (37) and the limiting plates (38).

10. The garbage truck body welding system according to claim 9, characterized in that: A third pulley (39) is provided at the outer end of the rotating shaft (36). The third pulley (39) is located outside the column (13). A square rod (310) slides laterally through the surface of the column (13). The square rod (310) is perpendicular to the rotating shaft (36). A second pulley (311) is rotatably mounted on one end of the square rod (310). A belt (314) is fitted on the surface of the first pulley (33), the second pulley (311), and the third pulley (39). A fixing plate (312) is provided at one end of the surface near the second pulley (311). A spring (313) is sleeved on the surface of the square rod (310). The spring (313) applies an outward pushing force to the fixing plate (312) so that the second pulley (311) moves outward and the belt (314) is in a taut state. At the same time, the belt (314) drives the third pulley (39) to rotate, thereby driving the auxiliary conveying roller (37) to rotate and keeping the auxiliary conveying roller (37) in a pressing contact with the top of the side plate.

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