Welding device for transport vehicle manufacturing

Abstract

The invention discloses a welding device for transport vehicle manufacturing, and relates to the technical field of transport vehicle manufacturing devices, in particular to a welding device for transport vehicle manufacturing, which is used for welding a steel plate on a transport vehicle and comprises a mounting frame, a welding part, a first worktable, a second worktable and a driving part, and the two workbenches are arranged to alternately move to the welding position, so that the continuity of the welding process is realized. When the first working table is used for welding, the second working table can clamp and position a steel plate at the same time, and after the first working table finishes welding, the second working table quickly moves to the welding position to carry out the next round of welding, so that the welding efficiency is greatly improved. In addition, the driving component adopts a chain transmission mode, so that stable and rapid movement of the two workbenches can be realized, and the welding period is further shortened. According to the continuous welding mode, the production efficiency is improved, the idle time of equipment is shortened, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of transport vehicle manufacturing equipment technology, specifically a welding device for transport vehicle manufacturing. Background Technology

[0002] In the manufacturing process of transport vehicles, the welding of steel plates is one of the key steps. Existing technologies, such as the invention patent CN202311154441.2 entitled "A Welding Device for Automobile Parts," can adaptively fix automobile parts of different shapes by setting up a parts fixing component, and then conveniently position and weld them according to the required welding location. Although this has advantages such as good compatibility, ease of operation, and good welding assistance in the welding process of automobile parts, it still has some shortcomings in the field of transport vehicle manufacturing, especially for welding large-area steel plates on transport vehicles.

[0003] The steel plates on transport vehicles are typically large in size, irregular in shape, and have varied welding positions. Existing welding equipment suffers from the following problems when welding such steel plates: firstly, the steel plates are not securely fixed, and displacement easily occurs during welding, leading to unstable weld quality; secondly, welding efficiency is low, as the clamping, positioning, and welding of the steel plates must be performed separately, making continuous welding impossible. Therefore, there is an urgent need for a welding device for transport vehicle manufacturing that can solve the above problems, thereby improving welding quality and efficiency while reducing operational difficulty and cost. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a welding apparatus for manufacturing transport vehicles, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a welding device for manufacturing transport vehicles, used for welding steel plates on transport vehicles, comprising a mounting frame, welding components, a first worktable, a second worktable, and a driving component. A fixed frame is fixedly mounted at one end of the mounting frame, and the welding components are fixedly mounted on the fixed frame. The welding components include a welding torch, with a welding position below the welding torch. The first worktable is slidably mounted on the mounting frame. A support component is mounted on the inner bottom wall of the mounting frame, and the second worktable is slidably mounted on the support component. The driving component includes two driving assemblies, which are respectively mounted on the two side walls of the mounting frame. The two driving assemblies are respectively connected to the first and second worktables via transmission, and the two driving assemblies drive the first and second worktables to alternately move to the welding position. A fixing component for clamping and pressing the steel plate is mounted on both the first and second worktables. The first or second worktable is connected to the fixing component via transmission, and when the first or second worktable slides, it drives the fixing component to clamp and fix the steel plate.

[0008] Optionally, the welding component includes a fixed frame, a second motor, a second threaded rod, a second moving block, and at least one servo electric cylinder. The servo electric cylinder is longitudinally fixedly mounted on the fixed frame, and its output shaft passes through the fixed frame. The fixed frame is fixedly mounted on the output shaft end of the servo electric cylinder, and the servo electric cylinder drives the fixed frame to move up and down. The second threaded rod is rotatably mounted on the fixed frame, and the second motor is fixedly mounted on the fixed frame. The second motor is drively connected to the second threaded rod, and the second motor drives the second threaded rod to rotate. The second moving block is laterally slidably mounted on the fixed frame, and the second threaded rod is threadedly connected to the second moving block. The welding torch is fixedly mounted on the second moving block.

[0009] Optionally, the driving component includes a first motor, which is connected to a first worktable or a second worktable in a transmission manner, and the first motor drives the first worktable or the second worktable to slide.

[0010] Optionally, the drive assembly further includes a chain, a tension sprocket, and multiple sprockets. The first motor is fixedly mounted on the outer side wall of the mounting frame, and the tension sprocket and multiple sprockets are rotatably mounted on the inner side wall of the mounting frame. The chain is wound around the tension sprocket and each sprocket, and the chain meshes with the tension sprocket and each sprocket respectively. The first motor is connected to one of the sprockets for transmission, and the first motor drives the sprocket to rotate.

[0011] Optionally, the supporting component includes a guide plate and a fixing plate. The guide plate and the fixing plate are both fixedly installed on the inner bottom wall of the mounting frame, and the guide plate and the fixing plate are arranged in parallel. The fixing plate is provided with a sliding groove, which consists of a horizontal section and two inclined sections. The two ends of the horizontal section are respectively connected to the two inclined sections.

[0012] Optionally, the supporting component further includes a movable stage, which is laid on the guide plate and the fixed plate, and the movable stage is slidably connected to the guide plate and the fixed plate along the length direction; a plurality of third sliding rods are fixedly connected to the lower surface of the second worktable, each of the third sliding rods passing through the movable stage, and the third sliding rods are slidably connected to the movable stage longitudinally; a sliding shaft is fixedly installed at the lower end of one of the third sliding rods, and the sliding shaft is inserted into the sliding groove of the fixed plate and the two are slidably connected; a second connecting plate is installed at the end of the movable stage, and the second connecting plate is fixedly installed to a link on a chain in a drive assembly.

[0013] Optionally, the first worktable is slidably mounted on the mounting bracket, and a first connecting plate is mounted at the end of the first worktable. The first connecting plate is fixedly mounted to a link on a chain in a drive assembly.

[0014] Optionally, a first rack is fixedly installed on both sides of the mounting frame; during the movement of the fixed component by the first or second worktable, the first rack is connected to the fixed component in a transmission connection.

[0015] Optionally, the fixing component includes a clamping assembly and a pressing assembly. The clamping assembly includes a first threaded rod, a first gear, and two movable plates. Both movable plates are slidably mounted on a first worktable or a second worktable. The first threaded rod is rotatably mounted on the first worktable or the second worktable, passing through the two movable plates and being threadedly connected to each other. After the first threaded rod rotates, it drives the two movable plates to move closer or further apart. The first gear is fitted onto the outer wall of one end of the first threaded rod and the two are fixedly installed. During the sliding displacement of the first worktable or the second worktable, the first gear is driven to move laterally. During the lateral movement, the first gear meshes with and rotates with the first rack. The pressing assembly includes an L-shaped rod, the lower part of which passes through the first worktable or the second worktable, and is longitudinally slidably connected to the first worktable or the second worktable. The movable plates are driven by the L-shaped rod. When the two movable plates approach each other, the movable plates push the L-shaped rod to slide downwards.

[0016] Optionally, the clamping assembly further includes a first spring, a clamping plate, and a plurality of first sliding rods. The first sliding rods are slidably mounted on the movable plate, and one end of the first sliding rod is fixedly connected to the clamping plate. The first spring is sleeved on the outer side wall of the first sliding rod, and both ends of the first spring abut against the movable plate and the clamping plate, respectively. The pressing assembly further includes a connecting rod, a pressure plate, a second sliding rod, a third spring, a guide rod, a first moving block, and a second spring. The guide rod is fixedly mounted on the first worktable or the second worktable, and the first moving block is slidably mounted on the first worktable or the second worktable. The guide rod passes through the first moving block and the movable plate, and is slidably connected to the first moving block and the movable plate, respectively. Both ends of the connecting rod are hinged to the lower ends of the first moving block and the L-shaped rod, respectively. The second spring is sleeved on the outer side wall of the guide rod, and one end of it abuts against the first moving block. The second sliding rod is slidably mounted longitudinally on the upper end of the L-shaped rod, and the lower end of the second sliding rod is fixedly connected to the pressure plate. The third spring is sleeved on the outer side wall of the second sliding rod.

[0017] (III) Beneficial Effects

[0018] This invention provides a welding apparatus for manufacturing transport vehicles, which has the following advantages: 1. This invention achieves continuous welding by setting up two worktables (a first worktable and a second worktable) that alternately move to the welding position. While welding is being performed on the first worktable, the second worktable can simultaneously clamp and position the steel plate. After the first worktable completes welding, the second worktable quickly moves to the welding position for the next round of welding, thus greatly improving welding efficiency. Furthermore, the drive mechanism uses chain transmission, enabling smooth and rapid movement of the two worktables, further shortening the welding cycle. This continuous welding method not only improves production efficiency but also reduces equipment downtime and lowers production costs.

[0019] 2. This invention, by incorporating a fixing component, automatically clamps and presses the steel plate during the sliding displacement of the first or second worktable, ensuring the steel plate is firmly fixed during welding and avoiding welding quality problems caused by steel plate displacement. The fixing component includes a clamping assembly and a pressing assembly. The clamping assembly, through structures such as a first threaded rod, a first gear, and a moving plate, can automatically adjust the clamping position according to the size of the steel plate, achieving stable clamping of steel plates of different sizes. The pressing assembly, through structures such as an L-shaped rod, a pressure plate, and a spring, can automatically apply pressure after the steel plates are joined, further enhancing the fixing effect. This automated fixing method not only improves welding quality but also reduces manual intervention and lowers the operational difficulty. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a welding device for manufacturing a transport vehicle according to the present invention; Figure 2 This is a three-dimensional structural diagram of the mounting bracket in a welding device for manufacturing a transport vehicle according to the present invention; Figure 3 This is a three-dimensional structural diagram of the fixing plate in a welding device for manufacturing a transport vehicle according to the present invention. Figure 4 This is a three-dimensional structural diagram of the second workbench in a welding apparatus for manufacturing a transport vehicle according to the present invention. Figure 5 This is a three-dimensional structural diagram of a servo electric cylinder in a welding device for manufacturing a transport vehicle according to the present invention. Figure 6 This is a cross-sectional view of the first workbench in a welding apparatus for manufacturing a transport vehicle according to the present invention. Figure 7 This is a three-dimensional structural diagram of the first connecting plate in a welding device for manufacturing a transport vehicle according to the present invention. Figure 8 This is a three-dimensional structural diagram of the moving platform in a welding apparatus for manufacturing a transport vehicle according to the present invention.

[0022] In the diagram: 1. Mounting frame; 2. First motor; 4. Sprocket; 5. Chain; 6. Tensioning sprocket; 7. First worktable; 8. First connecting plate; 9. First gear; 10. First threaded rod; 11. Moving plate; 12. First sliding rod; 13. First spring; 14. Clamping plate; 15. Guide rod; 16. First moving block; 17. Second spring; 18. Connecting rod; 19. Second rotating shaft; 20. L-shaped rod; 21. Pressure plate; 22. Second sliding rod; 23. Third spring; 24. First rack; 25. Guide plate; 26. Fixing plate; 27. Sliding shaft; 28. Moving table; 29. ​​Second connecting plate; 30. Third sliding rod; 31. Second worktable; 34. Fixing frame; 35. Second motor; 36. Second threaded rod; 37. Second moving block; 38. Welding torch; 39. Servo electric cylinder; 40. Fixing frame. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments.

[0025] Please see Figures 1 to 8 The present invention provides a technical solution: a welding device for manufacturing transport vehicles, which is used for welding steel plates on transport vehicles, including a mounting frame 1, welding components, a first worktable 7, a second worktable 31, and a driving component.

[0026] A mounting bracket 40 is fixedly installed at one end of the mounting frame 1. The welding component is fixedly installed on the mounting bracket 40. The welding component includes a welding torch 38, and the welding position is located below the welding torch 38. The welding torch 38 is used to perform welding operations.

[0027] Among them, the mounting frame 1 serves as the main frame of the entire welding device, playing the role of supporting and fixing other components, ensuring the structural stability and rigidity of the entire device, and providing a stable operating platform for welding operations.

[0028] The first worktable 7 is slidably mounted on the mounting frame 1. A support component is installed on the inner bottom wall of the mounting frame 1, and the second worktable 31 is slidably mounted on the support component.

[0029] The supporting components provide support for the second worktable 31. The first worktable 7 is used to place the steel plate to be welded, enabling the movement and positioning of the steel plate for welding operations. The second worktable 31 is used to place the steel plate to be welded. During the welding process, the second worktable 31 and the first worktable 7 alternately move to the welding position, achieving continuity in the welding process and improving welding efficiency.

[0030] The driving component includes two driving assemblies, which are respectively mounted on the two side walls of the mounting bracket 1. The two driving assemblies are respectively connected to the first worktable 7 and the second worktable 31, and drive the first worktable 7 and the second worktable 31 to move alternately to the welding position.

[0031] Among them, the two drive components in the drive unit are used to drive the first worktable 7 and the second worktable 31 to move alternately to the welding position.

[0032] Both the first worktable 7 and the second worktable 31 are equipped with fixing components for clamping and pressing the steel plate. The first worktable 7 or the second worktable 31 is connected to the fixing components in a transmission manner. When the first worktable 7 or the second worktable 31 slides, it drives the fixing components to clamp the steel plate.

[0033] Specifically, the welding components include a fixed frame 34, a second motor 35, a second threaded rod 36, a second moving block 37, and at least one servo electric cylinder 39. The servo electric cylinder 39 is longitudinally fixedly mounted on the fixed frame 40, and its output shaft passes through the fixed frame 40. The fixed frame 34 is fixedly mounted on the output shaft end of the servo electric cylinder 39, and the servo electric cylinder 39 drives the fixed frame 34 to move up and down. The second threaded rod 36 is rotatably mounted on the fixed frame 34, and the second motor 35 is fixedly mounted on the fixed frame 34. The second motor 35 is drively connected to the second threaded rod 36, and drives the second threaded rod 36 to rotate. The second moving block 37 is laterally slidably mounted on the fixed frame 34, and the second threaded rod 36 is threadedly connected to the second moving block 37. The welding torch 38 is fixedly mounted on the second moving block 37.

[0034] In this design, a servo electric cylinder 39 drives the fixed frame 34 to move up and down, allowing the welding torch 38 to be adjusted in height according to the welding position. A second motor 35 drives the second threaded rod 36 to rotate, causing the second moving block 37 to slide laterally within the fixed frame 34, thereby enabling the welding torch 38 to move laterally and ensuring precise alignment with the welding position. This structure allows for multi-degree-of-freedom adjustment of the welding torch 38, improving welding flexibility and precision.

[0035] Specifically, the drive assembly includes a first motor 2, which is connected to a first worktable 7 or a second worktable 31 for transmission, and the first motor 2 drives the first worktable 7 or the second worktable 31 to slide.

[0036] Among them, the first motor 2, as the core power source of the drive component, drives the sprocket 4 to rotate through the transmission connection, thereby driving the chain 5 to move, realizing the sliding displacement of the first worktable 7 and the second worktable 31, controlling the alternating movement of the two worktables, and is an important power component for realizing the automation and continuity of the welding process.

[0037] More specifically, the drive assembly also includes a chain 5, a tension sprocket 6, and multiple sprockets 4. The first motor 2 is fixedly mounted on the outer wall of the mounting frame 1. The tension sprocket 6 and multiple sprockets 4 are rotatably mounted on the inner wall of the mounting frame 1. The chain 5 is wound around the tension sprocket 6 and each of the sprockets 4, and the chain 5 meshes with the tension sprocket 6 and each of the sprockets 4 respectively. The first motor 2 is drively connected to one of the sprockets 4, and the first motor 2 drives the sprocket 4 to rotate.

[0038] The tension sprocket 6 prevents the chain 5 from loosening or slipping during transmission. The sprocket 4, through its engagement with the chain 5, transmits power from the first motor 2 to the chain 5, driving its movement and consequently causing the sliding displacement of the first worktable 7 and the second worktable 31, thus achieving alternating movement of the worktables. After the first motor 2 starts, it drives the sprocket 4 to rotate via a transmission connection, and the rotation of the sprocket 4 further drives the chain 5. Because the chain 5 is engaged with the tension sprocket 6 and all the sprockets 4, the chain 5 can transmit power smoothly. The first worktable 7 and the second worktable 31 are fixedly connected to the chain links on the chain 5, thereby achieving the sliding displacement of the two worktables. This chain drive method ensures smooth and accurate movement of the worktables and can withstand large loads, making it suitable for the welding requirements of large-sized steel plates in the manufacture of transport vehicles.

[0039] More specifically, the supporting components include a guide plate 25 and a fixing plate 26. The guide plate 25 and the fixing plate 26 are both fixedly installed on the inner bottom wall of the mounting frame 1, and the guide plate 25 and the fixing plate 26 are arranged in parallel. The fixing plate 26 is provided with a sliding groove, which consists of a horizontal section and two inclined sections. The two ends of the horizontal section are respectively connected to the two inclined sections.

[0040] More specifically, the supporting components also include a movable stage 28, which is laid on the guide plate 25 and the fixed plate 26, and is slidably connected to the guide plate 25 and the fixed plate 26 along the length direction. A plurality of third sliding rods 30 are fixedly connected to the lower surface of the second worktable 31, each of which passes through the movable stage 28 and is slidably connected to the movable stage 28 longitudinally. A sliding shaft 27 is fixedly installed at the lower end of one of the third sliding rods 30, and the sliding shaft 27 is inserted into a groove in the fixed plate 26 and the two are slidably connected. A second connecting plate 29 is installed at the end of the movable stage 28, and the second connecting plate 29 is fixedly installed to a link on the chain 5 in a drive assembly.

[0041] The movable table 28 is fixedly connected to the chain links on the chain 5 via the second connecting plate 29. When the chain 5 moves, it can drive the movable table 28 to move via the second connecting plate 29. This chain drive method can ensure that the movement of the worktable is smooth and accurate, and can withstand a large load, making it suitable for the welding needs of large-sized steel plates in the manufacturing of transport vehicles.

[0042] The moving table 28 slides along its length under the guidance of the guide plate 25 and the fixed plate 26. The sliding shaft 27 slides within a groove in the fixed plate 26. When the sliding shaft 27 slides on the ramp section, it drives the second worktable 31 and the third sliding rod 30 to slide downwards on the moving table 28, thus lowering the height of the second worktable 31 below the first worktable 7, preventing collisions when the two worktables exchange positions. When the sliding shaft 27 slides to the horizontal section, the height of the second worktable 31 matches that of the first worktable 7, completing the position exchange. This structural design not only achieves smooth movement of the worktables but also solves the problem of worktable height adjustment through the ingenious design of the groove, improving the flexibility and reliability of the device.

[0043] Specifically, the first workbench 7 is slidably mounted on the mounting frame 1, and a first connecting plate 8 is mounted on the end of the first workbench 7. The first connecting plate 8 is fixedly mounted to a link on the chain 5 in a drive assembly.

[0044] The first worktable 7 is fixedly connected to the chain links on the chain 5 via the first connecting plate 8, thereby enabling the sliding displacement of the first worktable 7. This chain drive method ensures smooth and accurate movement of the worktable and can withstand large loads, making it suitable for welding large-sized steel plates in the manufacturing of transport vehicles.

[0045] Specifically, a first rack 24 is fixedly installed on both sides of the mounting frame 1. During the movement of the fixed component by the first worktable 7 or the second worktable 31, the first rack 24 is connected to the fixed component in a transmission manner.

[0046] More specifically, the fixing components include a clamping assembly and a pressing assembly. The clamping assembly includes a first threaded rod 10, a first gear 9, and two movable plates 11. Both movable plates 11 are slidably mounted on the first worktable 7 or the second worktable 31. The first threaded rod 10 is rotatably mounted on the first worktable 7 or the second worktable 31, passing through both movable plates 11 and being threadedly connected to each of the two movable plates 11. After the first threaded rod 10 rotates, it drives the two movable plates 11 to move closer or further apart from each other. The first gear 9 is fitted onto the outer wall of one end of the first threaded rod 10, and the two are fixedly installed. During the sliding displacement of the first worktable 7 or the second worktable 31, the first gear 9 is driven to move laterally. During the lateral movement, the first gear 9 meshes with and rotates with the first rack 24.

[0047] The pressing assembly includes an L-shaped rod 20, the lower part of which passes through the first worktable 7 or the second worktable 31, and the L-shaped rod 20 is longitudinally slidably connected to the first worktable 7 or the second worktable 31. The moving plate 11 is drivenly connected to the L-shaped rod 20. When the two moving plates 11 approach each other, the moving plate 11 pushes the L-shaped rod 20 to slide downward.

[0048] The first threaded rod 10 rotates via the first gear 9. The two movable plates 11 clamp or release the steel plate.

[0049] When the first worktable 7 or the second worktable 31 slides, the first gear 9 meshes with the first rack 24, driving the first threaded rod 10 to rotate. The rotation of the first threaded rod 10 drives the two moving plates 11 to move closer or further apart, thereby clamping or releasing the steel plate. At the same time, the movement of the moving plates 11 pushes the L-shaped rod 20 to slide downwards, pressing the steel plate firmly. This linkage mechanism of clamping and pressing not only ensures the stability of the steel plate during the welding process but also automatically adjusts the clamping force according to the thickness and shape of the steel plate, improving the welding quality.

[0050] More specifically, the clamping assembly also includes a first spring 13, a clamping plate 14, and a plurality of first sliding rods 12. The first sliding rods 12 are slidably mounted on the moving plate 11, one end of the first sliding rod 12 is fixedly connected to the clamping plate 14, and the first spring 13 is sleeved on the outer side wall of the first sliding rod 12. The two ends of the first spring 13 abut against the moving plate 11 and the clamping plate 14 respectively.

[0051] Among them, the first spring 13, the clamping plate 14, and the multiple first sliding rods 12 play the role of buffering and increasing the clamping force, making the clamping more stable and reliable.

[0052] The pressing assembly also includes a connecting rod 18, a pressure plate 21, a second sliding rod 22, a third spring 23, a guide rod 15, a first moving block 16, and a second spring 17. The guide rod 15 is fixedly installed on the first worktable 7 or the second worktable 31, and the first moving block 16 is slidably installed on the first worktable 7 or the second worktable 31. The guide rod 15 passes through the first moving block 16 and the moving plate 11 respectively, and is slidably connected to the first moving block 16 and the moving plate 11 respectively. The two ends of the connecting rod 18 are hinged to the lower ends of the first moving block 16 and the L-shaped rod 20 respectively. The second spring 17 is sleeved on the outer wall of the guide rod 15, and one end of it abuts against the first moving block 16. The first moving block 16 and the connecting rod 18 are hinged through a second rotating shaft 19.

[0053] The second sliding rod 22 is longitudinally slidably installed on the upper end of the L-shaped rod 20, and the lower end of the second sliding rod 22 is fixedly connected to the pressure plate 21. The third spring 23 is sleeved on the outer side wall of the second sliding rod 22.

[0054] The guide rod 15 guides the sliding of the first moving block 16 and the moving plate 11, ensuring they can move smoothly and accurately along a predetermined track, thus improving the operational accuracy and reliability of the clamping and pressing components. When the moving plate 11 pushes the first moving block 16 along the guide rod 15, the first moving block 16 slides on the guide rod 15 and, through the connecting rod 18, drives the L-shaped rod 20 to descend further, realizing the action of the pressing component. Simultaneously, the second spring 17 acts as a buffer and increases the clamping force. The shape and size of the pressure plate 21 can be designed according to the characteristics of the steel plate to ensure the stability and reliability of the clamping. During the clamping process, the pressure plate 21 moves downward under the drive of the L-shaped rod 20, and the elastic action of the third spring 23 increases the clamping force, ensuring the stability of the steel plate during the welding process.

[0055] In use, step one: Place the two steel plates to be welded on the first workbench 7 and the second workbench 31 respectively, ensuring that the edge of the steel plate to be welded is directly below the pressure plate 21. This operation prepares for the subsequent welding operation, ensuring the steel plates are accurately positioned for easy clamping and welding.

[0056] The first motor 2 is started to provide power for the operation of the entire device. After the first motor 2 is started, the output shaft of the first motor 2 drives the sprocket 4 to rotate. The rotation of the sprocket 4 further drives the chain 5 to move, providing power support for the subsequent movement of the worktable and the clamping of the steel plate.

[0057] Step 2: Moving the first worktable 7.

[0058] Chain 5 drives the first worktable 7 to move towards the fixed frame 40 via the first connecting plate 8. During the movement, the first gear 9 meshes with the first rack 24, causing the first threaded rod 10 to rotate. This process enables precise movement of the first worktable 7, preparing it for clamping and welding of the steel plate.

[0059] The rotation of the first threaded rod 10 drives the two moving plates 11 to move closer to each other. The moving plates 11 push the clamping plate 14 towards the steel plate, thus clamping the steel plate. At the same time, the moving plates 11 slide on the first sliding rod 12, compressing the first spring 13 and increasing the clamping force. This process, through the automatic action of the clamping assembly, firmly fixes the steel plate on the worktable, preventing displacement during welding.

[0060] The movable plate 11 continues to move, pushing the first movable block 16 to slide along the guide rod 15. The first movable block 16 drives the L-shaped rod 20 to slide downwards via the connecting rod 18. The L-shaped rod 20 pushes the pressure plate 21 downwards, pressing the steel plate tightly. After the pressure plate 21 presses the steel plate tightly, the L-shaped rod 20 slides on the second sliding rod 22, compressing the third spring 23 and further increasing the pressing force. This process, through the action of the pressing assembly, ensures the stability of the steel plate during the welding process and avoids welding quality problems caused by steel plate displacement.

[0061] After the pressure plate 21 presses the steel plate tightly, the first gear 9 disengages from the first rack 24, completing the clamping action of the first worktable 7. At this time, the steel plate is firmly fixed on the first worktable 7, providing stable conditions for subsequent welding operations.

[0062] Step 3: Moving the second worktable 31.

[0063] Chain 5 drives the moving table 28 to move toward the side of the first motor 2 via the second connecting plate 29. The movement of the moving table 28 causes the second worktable 31 to move synchronously, moving the second worktable 31 out of the welding position and providing space for removing the welded steel plate.

[0064] The sliding shaft 27 slides within the inclined section of the sloping groove of the fixed plate 26, causing the second worktable 31 and the third sliding rod 30 to slide downwards on the moving platform 28, thus lowering the height of the second worktable 31. This process avoids collisions between the second worktable 31 and the first worktable 7 when they exchange positions, ensuring the smooth alternation of the worktables.

[0065] When the sliding shaft 27 slides into the straight groove portion of the fixed plate 26, the height of the second worktable 31 gradually returns to the same horizontal position as the first worktable 7. This process ensures that the two worktables maintain the same height when moving alternately, facilitating subsequent welding operations.

[0066] The second workbench 31 moves to the side of the first motor 2, completing the alternating movement of the two workbenches. At this time, the first workbench 7 is directly below the welding torch 38, ready for welding operations; while the second workbench 31 is in standby mode, waiting to place a new steel plate to be welded. This process achieves continuity in the welding process and improves welding efficiency.

[0067] Step 4: Welding operation.

[0068] Turning off the first motor 2 stops the movement of the worktable. This operation ensures that the worktable remains stationary during the welding process, providing stable conditions for the welding operation and improving welding accuracy.

[0069] The servo electric cylinder 39 is activated, causing the fixed frame 34 to move downwards, bringing the welding torch 38 closer to the welding position on the steel plate. Simultaneously, the second motor 35 is activated, driving the second threaded rod 36 to rotate, causing the second moving block 37 to slide laterally within the fixed frame 34. The movement of the second moving block 37 causes the welding torch 38 to move laterally, performing the welding operation. This process, through the multi-degree-of-freedom adjustment of the welding torch 38, achieves precise welding of the steel plate, improving welding quality and efficiency.

[0070] After the welding torch 38 completes welding, the servo electric cylinder 39 and the second motor 35 are turned off, and the welding torch 38 returns to its initial position. At this point, one welding operation is completed, and the welded steel plate is firmly fixed on the first worktable 7, awaiting subsequent removal operations.

[0071] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding apparatus for manufacturing transport vehicles, used for welding steel plates on transport vehicles, characterized in that: Includes mounting bracket (1), welding components, first worktable (7), second worktable (31), and drive components. One end of the mounting bracket (1) is fixedly mounted with a fixing bracket (40), and the welding component is fixedly mounted on the fixing bracket (40). The welding component includes a welding torch (38), and the welding position is located below the welding torch (38). The first workbench (7) is slidably mounted on the mounting frame (1); a support component is mounted on the inner bottom wall of the mounting frame (1), and the second workbench (31) is slidably mounted on the support component; The driving component includes two driving assemblies, which are respectively mounted on the two side walls of the mounting frame (1); the two driving assemblies are respectively connected to the first worktable (7) and the second worktable (31) for transmission, and the two driving assemblies respectively drive the first worktable (7) and the second worktable (31) to move alternately to the welding position; Both the first workbench (7) and the second workbench (31) are equipped with fixing components for clamping and pressing the steel plate. The first workbench (7) or the second workbench (31) is connected to the fixing components in a transmission manner. When the first workbench (7) or the second workbench (31) slides, it drives the fixing components to clamp the steel plate.

2. The welding apparatus for manufacturing a transport vehicle according to claim 1, characterized in that: The welding components include a fixed frame (34), a second motor (35), a second threaded rod (36), a second moving block (37), and at least one servo electric cylinder (39). The servo electric cylinder (39) is longitudinally fixedly mounted on a fixed frame (40), and the output shaft of the servo electric cylinder (39) passes through the fixed frame (40). The fixed frame (34) is fixedly mounted on the output shaft end of the servo electric cylinder (39), and the servo electric cylinder (39) drives the fixed frame (34) to move up and down. The second threaded rod (36) is rotatably mounted on the fixed frame (34), and the second motor (35) is fixedly mounted on the fixed frame (34). The second motor (35) is connected to the second threaded rod (36) in a transmission connection, and the second motor (35) drives the second threaded rod (36) to rotate. The second moving block (37) is laterally slidably mounted on the fixed frame (34), and the second threaded rod (36) is threadedly connected to the second moving block (37). The welding torch (38) is fixedly mounted on the second moving block (37).

3. The welding apparatus for manufacturing a transport vehicle according to claim 1, characterized in that: The drive assembly includes a first motor (2), which is connected to a first worktable (7) or a second worktable (31) for transmission. The first motor (2) drives the first worktable (7) or the second worktable (31) to slide.

4. The welding apparatus for manufacturing a transport vehicle according to claim 3, characterized in that: The drive assembly also includes a chain (5), a tension sprocket (6), and multiple sprockets (4). The first motor (2) is fixedly mounted on the outer side wall of the mounting frame (1). The tension sprocket (6) and multiple sprockets (4) are rotatably mounted on the inner side wall of the mounting frame (1). The chain (5) is wound around the tension sprocket (6) and each sprocket (4), and the chain (5) meshes with the tension sprocket (6) and each sprocket (4) respectively. The first motor (2) is connected to one of the sprockets (4) for transmission, and the first motor (2) drives the sprocket (4) to rotate.

5. The welding apparatus for manufacturing a transport vehicle according to claim 4, characterized in that: The supporting components include a guide plate (25) and a fixing plate (26). The guide plate (25) and the fixing plate (26) are both fixedly installed on the inner bottom wall of the mounting frame (1), and the guide plate (25) and the fixing plate (26) are arranged in parallel. The fixing plate (26) is provided with a sliding groove, which consists of a horizontal section and two inclined sections. The two ends of the horizontal section are respectively connected to the two inclined sections.

6. The welding apparatus for manufacturing a transport vehicle according to claim 5, characterized in that: The supporting component also includes a movable platform (28), which is laid on the guide plate (25) and the fixed plate (26), and the movable platform (28) is slidably connected to the guide plate (25) and the fixed plate (26) along the length direction; a plurality of third sliding rods (30) are fixedly connected to the lower surface of the second worktable (31), each of the third sliding rods (30) passes through the movable platform (28), and the third sliding rods (30) are slidably connected to the movable platform (28) longitudinally; a sliding shaft (27) is fixedly installed at the lower end of one of the third sliding rods (30), the sliding shaft (27) is inserted into the groove of the fixed plate (26) and the two are slidably connected; a second connecting plate (29) is installed at the end of the movable platform (28), and the second connecting plate (29) is fixedly installed to a link on the chain (5) in a drive assembly.

7. The welding apparatus for manufacturing a transport vehicle according to claim 1, characterized in that: The first workbench (7) is slidably mounted on the mounting frame (1), and a first connecting plate (8) is mounted on the end of the first workbench (7). The first connecting plate (8) is fixedly mounted to a link on a chain (5) in a drive assembly.

8. The welding apparatus for manufacturing a transport vehicle according to claim 1, characterized in that: The mounting bracket (1) has a first rack (24) fixedly installed on both sides of the mounting bracket (1); when the first workbench (7) or the second workbench (31) moves the fixed component, the first rack (24) is connected to the fixed component in a transmission connection.

9. A welding apparatus for manufacturing a transport vehicle according to claim 8, characterized in that: The fixing component includes a clamping assembly and a pressing assembly. The clamping assembly includes a first threaded rod (10), a first gear (9), and two movable plates (11). The two movable plates (11) are slidably mounted on the first worktable (7) or the second worktable (31). The first threaded rod (10) is rotatably mounted on the first worktable (7) or the second worktable (31). The first threaded rod (10) passes through the two movable plates (11) and is threadedly connected to the two movable plates (11) respectively. After the first threaded rod (10) rotates, it drives the two movable plates (11) to move closer to or further away from each other. The first gear (9) is fitted on the outer side wall of one end of the first threaded rod (10) and the two are fixedly installed. During the sliding displacement of the first worktable (7) or the second worktable (31), the first gear (9) is driven to move laterally. During the lateral movement, the first gear (9) meshes with and rotates with the first rack (24). The pressing assembly includes an L-shaped rod (20), the lower part of which passes through the first worktable (7) or the second worktable (31), and the L-shaped rod (20) is longitudinally slidably connected to the first worktable (7) or the second worktable (31); the moving plate (11) is drivenly connected to the L-shaped rod (20), and when the two moving plates (11) approach each other, the moving plate (11) pushes the L-shaped rod (20) to slide down.

10. A welding apparatus for manufacturing a transport vehicle according to claim 9, characterized in that: The clamping assembly further includes a first spring (13), a clamping plate (14), and a plurality of first sliding rods (12). The first sliding rods (12) are slidably mounted on the moving plate (11). One end of the first sliding rod (12) is fixedly connected to the clamping plate (14). The first spring (13) is sleeved on the outer side wall of the first sliding rod (12). The two ends of the first spring (13) abut against the moving plate (11) and the clamping plate (14) respectively. The pressing assembly further includes a connecting rod (18), a pressure plate (21), a second sliding rod (22), a third spring (23), a guide rod (15), a first moving block (16), and a second spring (17). The guide rod (15) is fixedly installed on the first workbench (7) or the second workbench (31). The first moving block (16) is slidably installed on the first workbench (7) or the second workbench (31). The guide rod (15) passes through the first moving block (16) and the moving plate (11) respectively, and the guide rod (15) is slidably connected to the first moving block (16) and the moving plate (11) respectively. The two ends of the connecting rod (18) are hinged to the lower ends of the first moving block (16) and the L-shaped rod (20) respectively. The second spring (17) is sleeved on the outer wall of the guide rod (15), and one end of it abuts against the first moving block (16).

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