Welding device for semi-trailer framework production

Abstract

The invention discloses a welding device for semi-trailer framework production, and particularly relates to the technical field of welding equipment.The welding device comprises a base, the upper end of the base and the top wall of an inner cavity of a containing cabin are jointly provided with a welding structure used for welding, and main beam supporting structures used for bearing frame main beams are symmetrically arranged at the front portion and the rear portion of the upper end of the base; cross beam supporting structures used for bearing and positioning frame cross beams are distributed at the upper end of the base in an array mode. The distance of the main beam supporting structure can be adjusted through the main beam supporting structure to adapt to frame main beams with different lengths, the cross beam supporting structure is driven by the connecting block to conduct synchronous adjustment, the cross beam supporting structure can adjust the distance of the unfolding assemblies to adapt to frame cross beams with different distances, and cross beams with different widths are adapted through the first telescopic rod; height alignment of the cross beam and the main beam is achieved through the lifting assembly, displacement of the frame in the welding process is avoided through the synergistic effect of the cross beam and the main beam, welding deviation is reduced, the welding quality is improved, the operation process is simplified, and the production requirements of semi-trailer frameworks of different specifications are met.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding device for the production of semi-trailer frames. Background Technology

[0002] The technical field of semi-trailer frame welding equipment encompasses the design and manufacturing of equipment related to welding of various components during the semi-trailer frame production process, as well as the adaptation of welding processes and the configuration of positioning and clamping mechanisms. The core of this technical field revolves around the structural characteristics of the semi-trailer frame, achieving precise and stable welding of various components. As the core load-bearing component of a semi-trailer, the semi-trailer frame is mainly assembled from components such as longitudinal beams, crossbeams, and legs. The connection quality of these components directly affects the load-bearing performance of the semi-trailer frame; therefore, welding is a core process in semi-trailer frame production, and the corresponding welding equipment has become a key research focus in this field.

[0003] Chinese Patent Publication No. CN121017968A discloses a welding platform for a semi-trailer frame vehicle, including a welding platform with slide rails fixed on both sides. Welding brackets are slidably connected within the slide rails, and a welding device is installed between the two welding brackets, positioned directly above the welding platform. Sliding grooves are longitudinally formed on the two welding brackets, and sliding frames are slidably connected within the sliding grooves. Clamping plates and adjusting plates are fixed on the two sliding frames and arranged opposite to each other. Four square holes arranged in an array around the center are formed on the end face of the clamping plate away from the adjusting plate. An X-shaped adjusting channel communicating with the four square holes is formed on the end face near the adjusting plate, based on the center of the end face. An adjusting channel with the same shape and position as the first adjusting channel is formed on the end face of the adjusting plate near the clamping plate.

[0004] However, in practical applications, existing technologies only achieve adjustment through the adjustment channels of clamping plates and adjusting plates, which has a limited adjustment range and cannot adapt to main beams of different lengths and crossbeams of different spacings. The positioning adjustment of the main beam and crossbeam lacks linkage, making it difficult to achieve precise height alignment. The clamping structure can only provide basic clamping and cannot form a stable limit for the components. Component displacement is prone to occur during welding, resulting in large welding deviations. The operation process is cumbersome and cannot flexibly adapt to the production of semi-trailer frames of various specifications, affecting welding quality and production convenience. Summary of the Invention

[0005] The main objective of this invention is to provide a welding device for the production of semi-trailer frames, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A welding device for semi-trailer frame production includes a base, a control cabinet disposed on one side of the base, and a receiving compartment disposed on one side of the control cabinet. The upper end of the base and the top wall of the inner cavity of the receiving compartment are provided with a welding structure for welding. The upper end of the base is symmetrically provided with main beam support structures for supporting the main beam of the frame. The upper end of the base is provided with an array of crossbeam support structures for supporting and positioning the crossbeams of the frame.

[0007] Preferably, the welding structure includes guide rails symmetrically arranged at the top of the base, a gantry frame is slidably connected to the inner walls of the two guide rails, a welding gun is movably installed on one side of the gantry frame by a snap-fit, an arc welding device is fixedly installed on the top wall of the inner cavity of the accommodating chamber, and a connecting line is fixedly connected to the output end of the arc welding device and the input end of the welding gun.

[0008] Preferably, the main beam support structure includes a straight slide groove formed at the upper end of the base and extending into the inner cavity of the receiving compartment. Two pneumatic lifting rods are slidably connected to the inner surface of the straight slide groove. A threaded rod driven by a motor installed inside the control cabinet is rotatably connected to the inner surface of the straight slide groove. The inner wall of the pneumatic lifting rod located away from the receiving compartment is threadedly connected to the threaded rod, and the inner wall of the pneumatic lifting rod located near the receiving compartment is slidably connected to the threaded rod. A steel cable is fixedly connected to one end of the two pneumatic lifting rods that are close to each other. A winding device connected to the steel cable is provided in the inner cavity of the pneumatic lifting rod located near the receiving compartment. A support block is fixedly installed at the upper end of each of the two pneumatic lifting rods. A connecting block fixedly connected to the crossbeam support structure is fixedly connected to the two pneumatic lifting rods located away from the receiving compartment.

[0009] Preferably, the support blocks are L-shaped with their opening side close to the center of the base. The vertical part of the support block is slidably connected to a locking tongue through a spring groove. The locking tongue is parallel to the horizontal part of the support block. The upper end of the vertical part of the support block is slidably connected to a lever block that is fixedly connected to the locking tongue. The lever block moves the locking tongue to slide within the spring groove of the support block.

[0010] Preferably, the crossbeam support structure includes a clamping assembly located at the upper end of the base. Several unfolding assemblies are slidably connected in an array on the inner wall of the clamping assembly. Each of the unfolding assemblies has a lifting assembly at its upper end for raising the height of the crossbeam. Each of the lifting assemblies has clamping assemblies symmetrically arranged at its upper end for clamping the crossbeam. A telescopic rod is fixedly connected between two clamping assemblies. The connecting block passes through the clamping assembly and is fixedly connected to the rightmost unfolding assembly through a connecting column.

[0011] Preferably, the unfolding assembly includes a slider that is slidably connected to the inner surface of the clamping assembly. The lower end of each slider is fixedly connected to a fixed shaft. Two connecting rods are rotatably connected to the outer surface of the fixed shaft in a cross pattern. The connecting rods on two adjacent fixed shafts are rotatably connected to a rotating shaft. The fixed shafts on the left and right sides are rotatably connected to connecting rods in a V-shape. The two sets of connecting rods are rotatably connected to the adjacent connecting rods through the rotating shaft. When the slider slides in the clamping assembly, the slider gradually unfolds under the action of the connecting rods, which is caused by the synchronous rotation of the connecting rods. The length of the connecting rod is half the length of the connecting rod.

[0012] Preferably, the lifting assembly includes a positioning block installed on the upper end of the slider. The positioning block is symmetrically rotatably connected to levers at its front and rear ends. The ends of the two levers away from the positioning block are rotatably connected to the clamping assembly on the same side. A pneumatic telescopic rod is rotatably connected to the center point of each of the two levers. The other ends of the two pneumatic telescopic rods are rotatably connected to the upper end of the slider.

[0013] Preferably, the clamping assembly includes a support base rotatably connected to the upper end of the lever, and clamping blocks are symmetrically slidably connected to the upper end of the support base. The portions of the two clamping blocks located in the inner cavity of the support base are rotatably connected to a telescopic rod rotatably connected to the inner cavity of the support base. A clamping drive component is provided in the middle of the upper end of the support base to drive the clamping blocks on both sides to move closer to each other.

[0014] Preferably, the inner wall of the clamping block is slidably connected to an elastic plate by a spring, and a number of rubber balls are fixedly connected in an array on the side of the elastic plate near the center of the support base. The part of the clamping block located in the inner cavity of the support base is fixedly connected to a cable that is wound and connected to the clamping drive component.

[0015] Preferably, the clamping drive includes a winch rotatably connected to the inner surface of the support base. The winch is wound with cables on both sides. A sliding rod is slidably connected to the inner wall of the winch. The upper end of the sliding rod extends through the inner cavity of the support base to the upper end of the support base and is fixedly connected to a contact block. A spring limiting block disposed at the lower end of the sliding rod is fixedly connected to the lower end of the support base. An inclined sliding groove is distributed in a ring on the outer surface of the sliding rod. A protrusion adapted to the adjacent inclined sliding groove is provided on the inner surface of the winch. When the contact block contacts the crossbeam and drives the sliding rod to move downward, the winch rotates under the action of the protrusion and the inclined sliding groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention features an adjustable main beam support structure that can accommodate main beams of different lengths. A connecting block drives the crossbeam support structure to adjust synchronously. The adjustable crossbeam support structure's unfolding components can accommodate crossbeams of different spacings. A telescopic rod accommodates crossbeams of different widths. A lifting component aligns the crossbeams with the main beam. The combined effect of these two components prevents frame displacement during welding, reduces welding deviations, improves welding quality, simplifies the operation process, and meets the production needs of semi-trailer frames of different specifications.

[0017] 2. This invention, through the cooperation of threaded rods, pneumatic lifting rods, and straight sliding grooves, allows for flexible adjustment of the distance between two pneumatic lifting rods, adapting to main beams of different lengths. The pneumatic lifting rods can drive the support blocks to rise and fall, meeting the height requirements of different welding processes. The support blocks, in conjunction with locking tongues and levers, can provide double-limiting for the main beam, preventing displacement during welding. The steel cable, in conjunction with the winding device, can prevent accidental displacement of the pneumatic lifting rods, improving the stability of the main beam support. The connecting block enables linkage between the main beam support structure and the crossbeam support structure, making the positioning adjustment of the main beam and crossbeam more synchronized, reducing adjustment deviations. Overall, the operation process is simplified, improving the stability and adaptability of the main beam positioning and ensuring welding quality.

[0018] 3. This invention, through the cooperation of the slider of the unfolding component and the connecting rod one and connecting rod two, enables all unfolding components to unfold synchronously at equal intervals, adapting to the arrangement of crossbeams of the frame with different intervals. The telescopic rod one can adjust the distance between the two clamping components, adapting to crossbeams of different widths. The pneumatic telescopic rod of the lifting component, in cooperation with the lever, can adjust the height of the clamping component, achieving alignment of the crossbeam with the main beam. The clamping component, through the cooperation of clamping drive components, clamping blocks, and other components, can automatically and stably clamp the crossbeam, avoiding welding displacement. The overall adjustment and clamping process is simplified, improving the stability, adaptability, and convenience of crossbeam positioning, and ensuring welding quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the welding structure of the present invention; Figure 3 This is a schematic diagram of the main beam support structure of the present invention; Figure 4 This is a cross-sectional schematic diagram of the main beam support structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of a local structure at point A; Figure 6 This is a schematic diagram of the beam support structure of the present invention; Figure 7 This is a schematic diagram of the structure of the unfolding component of the present invention; Figure 8 This is a schematic diagram of the lifting component of the present invention; Figure 9 This is a schematic diagram of the clamping assembly of the present invention; Figure 10 This is a schematic diagram of the explosion effect of the clamping drive component of the present invention.

[0020] In the diagram: 1. Base; 2. Welded structure; 21. Gantry frame; 22. Guide rail; 23. Connecting line; 24. Arc welding equipment; 25. Welding torch; 3. Reception chamber; 4. Main beam support structure; 41. Straight slide; 42. Threaded rod; 43. Steel cable; 44. Support block; 441. Locking tongue; 442. Pulley block; 45. Pneumatic lifting rod; 46. Connecting block; 5. Crossbeam support structure; 51. Deployment assembly; 511. Slider; 512. Connecting rod one; 513. Connecting rod two; 514. Rotating shaft; 5 15. Fixed shaft; 52. Lifting assembly; 521. Positioning block; 522. Lever; 523. Pneumatic telescopic rod; 53. Telescopic rod one; 54. Clamping assembly; 541. Support base; 542. Telescopic rod two; 543. Clamping block; 5431. Elastic plate; 5432. Rubber ball; 544. Clamping drive component; 5441. Winch; 5442. Protrusion; 5443. Contact block; 5444. Sliding rod; 5445. Inclined slide; 5446. Spring limit block; 545. Cable; 6. Control cabinet. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1: A welding device for semi-trailer frame production, see reference. Figure 1 The system includes a base 1, a control cabinet 6 located on one side of the base 1, and a receiving compartment 3 located on one side of the control cabinet 6. A welding structure 2 for welding is provided on the upper end of the base 1 and the top wall of the inner cavity of the receiving compartment 3. A main beam support structure 4 for supporting the main beam of the frame is symmetrically arranged at the front and rear of the upper end of the base 1. A crossbeam support structure 5 for supporting and positioning the crossbeams of the frame is arranged in an array on the upper end of the base 1. The base 1, as the basic load-bearing component of the equipment, provides a stable support platform for the entire device, preventing welding deviations caused by equipment shaking during welding. The receiving compartment 3 can store and protect welding-related components, preventing sparks and fumes generated during welding from damaging equipment components, while not affecting the normal movement of related components, ensuring smooth welding work. The main beam support structure 4 provides stable support for the main beam of the frame, and the crossbeam support structure 5 provides support and positioning for the crossbeams of the frame. The two work together to prevent frame displacement during welding, reduce welding deviations, and improve welding quality.

[0023] For further details, please refer to [link / reference]. Figure 2 The welding structure 2 includes symmetrical guide rails 22 on the upper part of the base 1. A gantry 21 is slidably connected to the inner walls of the two guide rails 22. A welding torch 25 is movably installed on one side of the gantry 21 via a snap-fit. An arc welding device 24 is fixedly installed on the top wall of the inner cavity of the housing 3. A connecting line 23 is fixedly connected to the output end of the arc welding device 24 and the input end of the welding torch 25. The gantry 21 can slide along the guide rails 22, thereby driving the welding torch 25 to adjust its horizontal position, realizing welding operations on different parts. All welding operations can be completed without moving the frame. The welding torch 25 is movably installed via a snap-fit, and can be flexibly disassembled and its angle adjusted to adapt to the process requirements of different welding angles, facilitating the maintenance and replacement of the welding torch 25. The arc welding device 24 provides welding power to the welding torch 25 through the connecting line 23 to ensure the normal operation of the welding operation. The connecting line 23 can extend and retract in coordination with the movement of the gantry 21 and the welding torch 25 without affecting the smoothness of the welding operation.

[0024] In the operation of this embodiment, the main beam support structure 4 can adjust its own spacing to adapt to the main beams of different lengths of the frame. The connecting block 46 drives the crossbeam support structure 5 to adjust synchronously. The crossbeam support structure 5 can adjust the spacing of the unfolding component 51 to adapt to the crossbeams of different spacings of the frame. The telescopic rod 53 adapts to the crossbeams of different widths. The lifting component 52 realizes the height alignment of the crossbeam and the main beam. The two work together to avoid the displacement of the frame during welding, reduce welding deviation, improve welding quality, simplify the operation process, and adapt to the production needs of semi-trailer frames of different specifications.

[0025] Example 2, based on Example 1, further utilizes the cooperation of threaded rod 42, pneumatic lifting rod 45, and straight slide groove 41 to flexibly adjust the distance between the two pneumatic lifting rods 45, adapting to frame main beams of different lengths. The pneumatic lifting rod 45 can drive the support block 44 to rise and fall, meeting the height requirements of different welding processes. The support block 44, in cooperation with locking tongue 441 and toggle block 442, can form a double limit on the main beam, preventing displacement of the main beam during welding. The steel cable 43, in cooperation with the winding device, can prevent accidental displacement of the pneumatic lifting rod 45, improving the stability of the main beam support. The connecting block 46 can realize the linkage between the main beam support structure 4 and the crossbeam support structure 5, making the positioning adjustment of the main beam and crossbeam more synchronized, reducing adjustment deviations, simplifying the overall operation process, improving the stability and adaptability of the frame main beam positioning, and ensuring welding quality.

[0026] For further details, please refer to [link / reference]. Figure 3The main beam support structure 4 includes a straight slide groove 41 opened at the upper end of the base 1 and extending into the inner cavity of the housing 3. Two pneumatic lifting rods 45 are slidably connected to the inner surface of the straight slide groove 41. A threaded rod 42 driven by a motor installed inside the control cabinet 6 is rotatably connected to the inner surface of the straight slide groove 41. The inner wall of the pneumatic lifting rod 45 located away from the housing 3 is threadedly connected to the threaded rod 42, and the inner wall of the pneumatic lifting rod 45 located near the housing 3 is slidably connected to the threaded rod 42. A steel cable 43 is fixedly connected to the two pneumatic lifting rods 45 at their close ends. A winding device connected to the steel cable 43 is provided in the inner cavity of the pneumatic lifting rod 45 located near the housing 3. A support block 44 is fixedly installed at the upper end of each of the two pneumatic lifting rods 45. The lifting rods 45 are fixedly connected to the connecting block 46, which is fixedly connected to the crossbeam support structure 5. When the motor drives the threaded rod 42 to rotate, it can drive the pneumatic lifting rod 45 on the side away from the housing 3 to slide along the straight slide groove 41. The pneumatic lifting rod 45 on the side closer to the housing 3 moves with the cooperation of the steel cable 43 and the winding device, thereby adjusting the distance between the two pneumatic lifting rods 45 to adapt to the main beams of different lengths. The pneumatic lifting rods 45 can drive the support block 44 to rise and fall, adjusting the support height to meet the requirements of different welding processes. The connecting block 46 can realize the linkage between the main beam support structure 4 and the crossbeam support structure 5, making the positioning adjustment of the main beam and the crossbeam more synchronized and reducing adjustment deviation. The winding device can fix the length of the steel cable 43 to prevent the pneumatic lifting rod 45 from accidentally shifting and improve the stability of the main beam support.

[0027] For further details, please refer to [link / reference]. Figure 4 and Figure 5 The support block 44 is L-shaped, with its open side close to the center of the base 1. The vertical part of the support block 44 is slidably connected to the locking tongue 441 through a spring groove. The locking tongue 441 is parallel to the horizontal part of the support block 44. The upper end of the vertical part of the support block 44 is slidably connected to the lever 442, which is fixedly connected to the locking tongue 441. By lever 442, the locking tongue 441 is moved to slide in the spring groove of the support block 44. The L-shaped support block 44 can form a stable support limit for the main beam, conforming to the shape of the main beam to achieve full support. The operator can drive the locking tongue 441 to slide through the lever 442. The locking tongue 441 can achieve lateral locking of the main beam, forming a double limit to prevent the main beam from shifting during welding. The elasticity of the spring can realize the automatic reset of the locking tongue 441, simplifying the operation process and improving the convenience of operation. The lever 442 is easy for the operator to operate and can quickly complete the adjustment of the locking tongue 441.

[0028] In Example 3, based on Example 2, this example further utilizes the cooperation of the slider 511, connecting rod 1 512, and connecting rod 2 513 of the unfolding component 51 to achieve simultaneous unfolding of all unfolding components 51 at equal intervals, adapting to the arrangement of crossbeams with different spacing. The telescopic rod 1 53 can adjust the spacing between the two clamping components 54, adapting to crossbeams of different widths. The pneumatic telescopic rod 523 of the lifting component 52, in cooperation with the lever 522, can adjust the height of the clamping component 54, achieving alignment of the crossbeam with the main beam. The clamping component 54, through the cooperation of components such as the clamping drive component 544 and the clamping block 543, can automatically and stably clamp the crossbeam, avoiding welding displacement. Overall, the adjustment and clamping process is simplified, improving the stability, adaptability, and convenience of crossbeam positioning, and ensuring welding quality.

[0029] For further details, please refer to [link / reference]. Figure 6 The crossbeam support structure 5 includes a clamping assembly 54 located on the upper end of the base 1. Several unfolding assemblies 51 are slidably connected in an array along the inner wall of the clamping assembly 54. Each unfolding assembly 51 has a lifting assembly 52 at its upper end for raising the height of the crossbeam. Each lifting assembly 52 has clamping assemblies 54 symmetrically arranged at its upper end for clamping the crossbeam. A telescopic rod 53 is fixedly connected between two clamping assemblies 54. A connecting block 46 passes through the clamping assembly 54 and is fixedly connected to the rightmost unfolding assembly 51 via a connecting post. The connecting block 46 can drive the rightmost unfolding assembly 51. The right-side unfolding component 51 slides along the clamping component 54, thereby driving all unfolding components 51 to unfold synchronously. The spacing of each unfolding component 51 can be adjusted to adapt to the arrangement requirements of crossbeams with different spacing. The lifting component 52 can adjust the height of the clamping component 54 to achieve the alignment of the crossbeam and the main beam, ensuring the flatness of the welding part. The clamping component 54 can stably clamp the crossbeam to prevent it from shifting during welding. The telescopic rod 53 can adjust the spacing between the two clamping components 54 to adapt to crossbeams of different widths. After adjustment, the spacing can be fixed to ensure clamping stability.

[0030] For further details, please refer to [link / reference]. Figure 7The unfolding assembly 51 includes a slider 511 slidably connected to the inner surface of the clamping assembly 54. Each slider 511 has a fixed shaft 515 fixedly connected to its lower end. Two connecting rods 512 are rotatably connected to the outer surface of each fixed shaft 515 in a cross pattern. The connecting rods 512 on adjacent fixed shafts 515 are rotatably connected to a rotating shaft 514. The fixed shafts 515 on the left and right sides are V-shaped and rotatably connected to connecting rods 513. The two sets of connecting rods 513 are rotatably connected to adjacent connecting rods 512 via the rotating shaft 514. When the slider 511 slides within the clamping assembly 54... The slider 511 unfolds gradually through the action of connecting rod 512. The synchronous rotation of connecting rod 512 causes the connecting rod 513, which is half the length of connecting rod 512, to unfold. When the slider 511 slides, it can drive the fixed shaft 515 to move, thereby driving connecting rod 512 and connecting rod 513 to rotate synchronously. This achieves the synchronous unfolding of all unfolding components 51 at equal intervals, eliminating the need to adjust each unfolding component 51 individually, simplifying the adjustment process. The rotating shaft 514 ensures smooth rotation of connecting rod 512 and connecting rod 513, reducing jamming and ensuring the smooth unfolding of the unfolding components 51.

[0031] For further details, please refer to [link / reference]. Figure 8 The lifting assembly 52 includes a positioning block 521 mounted on the upper end of the slider 511. The positioning block 521 has levers 522 symmetrically rotatably connected to its front and rear ends. The ends of the two levers 522 furthest from the positioning block 521 are rotatably connected to the clamping assembly 54 on the same side. Pneumatic telescopic rods 523 are rotatably connected to the center points of both levers 522. The other ends of the two pneumatic telescopic rods 523 are rotatably connected to the upper end of the slider 511. When the pneumatic telescopic rods 523 extend or retract, they can drive the levers 522 to rotate around the positioning block 521, thereby driving the clamping assembly 54 to rise or fall, achieving adjustment of the beam height and ensuring precise alignment between the beam and the main beam. The positioning block 521 provides stable support for the rotation of the levers 522, preventing the levers 522 from shifting during rotation and ensuring smooth lifting and lowering of the clamping assembly 54. The buffering effect of the pneumatic telescopic rods 523 can alleviate the impact force during lifting and lowering, preventing damage to the beam or the clamping assembly 54.

[0032] For further details, please refer to [link / reference]. Figure 9The clamping assembly 54 includes a support base 541 rotatably connected to the upper end of the lever 522. The upper end of the support base 541 is symmetrically and slidably connected with clamping blocks 543. The portions of the two clamping blocks 543 located in the inner cavity of the support base 541 are rotatably connected with telescopic rods 542 rotatably connected to the inner cavity of the support base 541. The middle of the upper end of the support base 541 is provided with a clamping drive member 544 that drives the two clamping blocks 543 to move closer to each other. The support base 541 can provide stable support for the crossbeam. The clamping drive member 544 can drive the two clamping blocks 543 to move closer to each other, realizing automatic clamping of the crossbeam, eliminating the tedious operation of manual clamping. The telescopic rods 542 can guide the movement of the clamping blocks 543, ensuring that the clamping blocks 543 move in a straight line, avoiding the clamping blocks 543 from deviating, ensuring clamping stability, and preventing the crossbeam from tilting when clamped.

[0033] For further details, please refer to [link / reference]. Figure 9 An elastic plate 5431 is slidably connected to the inner wall of the clamping block 543 via a spring. Several rubber balls 5432 are fixedly connected in an array on the side of the elastic plate 5431 near the center of the support base 541. A cable 545, which is wound and connected to the clamping drive component 544, is fixedly connected to the part of the clamping block 543 located in the inner cavity of the support base 541. The cooperation between the elastic plate 5431 and the spring can form an elastic support, adapting to the slight unevenness of the crossbeam surface and achieving tight clamping of the crossbeam. The rubber balls 5432 can increase the friction between the crossbeam and the crossbeam, preventing the crossbeam from sliding after clamping, and at the same time, they can protect the surface of the crossbeam, avoiding damage to the surface of the crossbeam during clamping. The cable 545 can transmit the power of the clamping drive component 544, driving the clamping block 543 to move synchronously, achieving synchronous clamping of the two clamping blocks 543 and ensuring uniform clamping force.

[0034] For further details, please refer to [link / reference]. Figure 10The clamping drive component 544 includes a winch 5441 rotatably connected to the inner surface of the support base 541. The winch 5441 is wound and connected to cables 545 on both sides. A sliding rod 5444 is slidably connected to the inner wall of the winch 5441. The upper end of the sliding rod 5444 extends through the inner cavity of the support base 541 to the upper end of the support base 541 and is fixedly connected to a contact block 5443. A spring limiting block 5446 is fixedly connected to the lower end of the sliding rod 5444 and is located at the lower end of the support base 541. An inclined groove 5445 is distributed in an annular pattern on the outer surface of the sliding rod 5444. A protrusion 5442 that matches the adjacent inclined groove 5445 is provided on the inner surface of the winch 5441. When the contact block 5443 contacts the crossbeam and... When the sliding rod 5444 moves downward, the winch 5441 rotates under the action of the protrusion 5442 and the inclined slide groove 5445. When the crossbeam is placed on the support base 541, it presses down on the contact block 5443, causing the sliding rod 5444 to move downward. Through the cooperation of the inclined slide groove 5445 and the protrusion 5442, the winch 5441 can be driven to rotate. When the winch 5441 rotates, it can wind up the cable 545, thereby driving the clamping blocks 543 to move closer to each other, realizing the automatic clamping of the crossbeam. No additional drive components are required, simplifying the structural design. The spring limit block 5446 can limit the movement range of the sliding rod 5444, preventing the sliding rod 5444 from shifting and causing transmission failure, and ensuring the stable operation of the clamping drive component 544.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for semi-trailer frame production, comprising a base (1), a control cabinet (6) disposed on one side of the base (1), and a receiving compartment (3) opened on one side of the control cabinet (6), characterized in that: The upper end of the base (1) and the inner wall of the cavity of the accommodating compartment (3) are provided with a welding structure (2) for welding. The upper end of the base (1) is symmetrically provided with a main beam support structure (4) for supporting the main beam of the frame. The upper end of the base (1) is provided with a crossbeam support structure (5) for supporting the positioning frame crossbeam.

2. The welding device for semi-trailer frame production according to claim 1, characterized in that: The welding structure (2) includes guide rails (22) symmetrically opened at the upper end of the base (1). The inner walls of the two guide rails (22) are slidably connected to a gantry frame (21). A welding gun (25) is installed on one side of the gantry frame (21) by a snap fastener. An arc welding device (24) is fixedly installed on the top wall of the inner cavity of the accommodating chamber (3). The output end of the arc welding device (24) and the input end of the welding gun (25) are fixedly connected to a connecting line (23).

3. The welding device for semi-trailer frame production according to claim 1, characterized in that: The main beam support structure (4) includes a straight slide groove (41) opened at the upper end of the base (1) and extending into the inner cavity of the receiving compartment (3). Two pneumatic lifting rods (45) are slidably connected to the inner surface of the straight slide groove (41). A threaded rod (42) driven by a motor installed inside the control cabinet (6) is rotatably connected to the inner surface of the straight slide groove (41). The inner wall of the pneumatic lifting rod (45) located away from the receiving compartment (3) is threadedly connected to the threaded rod (42). The inner wall of the pneumatic lifting rod (45) located near the receiving compartment (3) is threadedly connected to the threaded rod (42). 5) The inner wall is slidably connected to the threaded rod (42). The two pneumatic lifting rods (45) are fixedly connected to a steel cable (43) at their close ends. The pneumatic lifting rod (45) located near the accommodating compartment (3) has a winding device connected to the steel cable (43) in its inner cavity. The upper ends of the two pneumatic lifting rods (45) are fixedly installed with a support block (44). The two pneumatic lifting rods (45) located away from the accommodating compartment (3) are fixedly connected to a connecting block (46) that is fixedly connected to the crossbeam support structure (5).

4. The welding device for semi-trailer frame production according to claim 3, characterized in that: The support block (44) is L-shaped with its opening side close to the center of the base (1). The vertical part of the support block (44) is slidably connected to the latch (441) through the spring groove. The latch (441) is parallel to the horizontal part of the support block (44). The upper end of the vertical part of the support block (44) is slidably connected to the lever (442) which is fixedly connected to the latch (441). The latch (441) is moved to slide in the spring groove of the support block (44) by the lever (442).

5. The welding device for semi-trailer frame production according to claim 3, characterized in that: The beam support structure (5) includes a clamping assembly (54) located on the upper end of the base (1). Several unfolding assemblies (51) are slidably connected in an array on the inner wall of the clamping assembly (54). Each of the unfolding assemblies (51) has a lifting assembly (52) for raising the height of the beam. Each of the lifting assemblies (52) has a clamping assembly (54) for clamping the beam symmetrically arranged at the upper end. A telescopic rod (53) is fixedly connected between two clamping assemblies (54). The connecting block (46) passes through the clamping assembly (54) and is fixedly connected to the rightmost unfolding assembly (51) through a connecting column.

6. The welding device for semi-trailer frame production according to claim 5, characterized in that: The unfolding assembly (51) includes a slider (511) that is slidably connected to the inner surface of the clamping assembly (54). The lower end of each slider (511) is fixedly connected to a fixed shaft (515). The outer surface of the fixed shaft (515) is rotatably connected to two connecting rods (512) in a cross distribution. The connecting rods (512) on the two adjacent fixed shafts (515) are rotatably connected to a rotating shaft (514). The fixed shafts (515) on the left and right sides are rotatably connected to connecting rods (513) in a V-shape. The two sets of connecting rods (513) are rotatably connected to the adjacent connecting rods (512) through the rotating shaft (514). When the slider (511) slides in the clamping assembly (54), the slider (511) gradually unfolds through the action of the connecting rods (512) and is caused by the synchronous rotation of the connecting rods (512). The length of the connecting rods (513) is half the length of the connecting rods (512).

7. The welding device for semi-trailer frame production according to claim 6, characterized in that: The lifting assembly (52) includes a positioning block (521) installed on the upper end of the slider (511). The positioning block (521) is symmetrically rotatably connected to levers (522) at both ends. The ends of the two levers (522) away from the positioning block (521) are rotatably connected to the clamping assembly (54) on the same side. Pneumatic telescopic rods (523) are rotatably connected to the center point of the two levers (522). The other ends of the two pneumatic telescopic rods (523) are rotatably connected to the upper end of the slider (511).

8. The welding device for semi-trailer frame production according to claim 7, characterized in that: The clamping assembly (54) includes a support base (541) rotatably connected to the upper end of the lever (522). The upper end of the support base (541) is symmetrically connected with clamping blocks (543). The portions of the two clamping blocks (543) located in the inner cavity of the support base (541) are rotatably connected with telescopic rods (542) rotatably connected to the inner cavity of the support base (541). The middle part of the upper end of the support base (541) is provided with a clamping drive member (544) that drives the clamping blocks (543) on both sides to move closer to each other.

9. The welding device for semi-trailer frame production according to claim 8, characterized in that: The inner wall of the clamping block (543) is slidably connected to an elastic plate (5431) by a spring. Several rubber balls (5432) are fixedly connected in an array on the side of the elastic plate (5431) near the center of the support base (541). The part of the clamping block (543) located in the inner cavity of the support base (541) is fixedly connected to a cable (545) that is wound and connected to the clamping drive component (544).

10. The welding device for semi-trailer frame production according to claim 9, characterized in that: The clamping drive (544) includes a winch (5441) rotatably connected to the inner surface of the support base (541). The winch (5441) is wound and connected with cables (545) on both sides. A sliding rod (5444) is slidably connected to the inner wall of the winch (5441). The upper end of the sliding rod (5444) extends through the inner cavity of the support base (541) to the upper end of the support base (541) and is fixedly connected to a contact block (5443). The lower end of the sliding rod (5444) is fixedly connected to a... A spring limiting block (5446) is placed at the lower end of the support base (541). The outer surface of the sliding rod (5444) is provided with annularly distributed inclined sliding grooves (5445). The inner surface of the winch (5441) is provided with protrusions (5442) that are adapted to the adjacent inclined sliding grooves (5445). When the contact block (5443) contacts the crossbeam and drives the sliding rod (5444) to move downward, the winch (5441) rotates under the action of the protrusions (5442) and the inclined sliding grooves (5445).

Images