A welding robot for rear end beams of special vehicles

Abstract

The present invention relates to the field of mechanical processing technology, and proposes a welding robot for a special vehicle rear end beam, comprising a ceiling rail, a support platform, a welding robot arm, and a welding platform. The welding platform comprises two bottom beams, two clamping gantries are slidably installed at both ends of the bottom beams, three crossbeam structures are installed in the middle of the bottom beams, and two movable sliding bases are symmetrically installed at the upper ends of the three crossbeam structures. A steel frame is fixedly installed at the upper end of the sliding base, and a tooling platform is fixedly connected to the upper end surface of the steel frame. This facilitates changing the overall width of the tooling platform to support the workpiece, and when one side of the crossbeam structure is flipped, the sliding base and the transmission mechanism can still be stably connected, thereby leaving space on the edge and bottom of the workpiece, facilitating welding on both sides and the bottom of the workpiece, and avoiding reverse side welding when the workpiece is inconvenient to flip due to the weight of the workpiece, thereby improving welding efficiency and ensuring welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, in particular to a welding robot for a special vehicle rear end beam. Background Art

[0002] Special-purpose vehicles are vehicles used to undertake special transportation tasks or special operations, including dump trucks, full trailers, semi-trailers and other types of vehicles. The welding of the rear end beam of the semi-trailer is mainly done by manual welding. The welding quality is greatly affected by the level of manual operation, and the welding quality stability is poor. The welding workbench for the rear end beam of special-purpose vehicles on the market is an ordinary platform. The platform cannot be adjusted and cannot be installed with other auxiliary equipment required for welding. At the same time, the welding process of the rear end beam of the special-purpose vehicle requires the front and back sides of the rear end beam of the special-purpose vehicle to be processed. However, due to the weight of the rear end beam of the special-purpose vehicle itself, the flipping of the rear end beam of the special-purpose vehicle needs to rely on professional lifting equipment, which is time-consuming and labor-intensive, and the rear end beam of the special-purpose vehicle needs to be re-positioned and corrected, affecting the welding efficiency and welding quality of the rear end beam of the special-purpose vehicle.

[0003] Therefore, we have made improvements to this and proposed a welding robot specifically for vehicle rear end beams. Summary of the Invention

[0004] The purpose of the present invention is to provide a special welding robot for vehicle rear end beams to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides a welding robot for the rear end beam of a special vehicle, including a ceiling rail, a support platform, a welding robot and a welding platform. The welding platform includes two bottom beams, and two clamping gantries are slidably installed at both ends of the bottom beam. Three cross beam structures are installed in the middle of the bottom beam, and two movable sliding bases are symmetrically installed on the upper ends of the three cross beam structures. A steel frame is fixedly installed on the upper end of the sliding base, and the upper end surface of the steel frame is fixedly connected to a tooling platform. A plurality of conveying rollers are also installed in the middle of the tooling platform, and the plurality of conveying rollers are synchronously connected to a synchronous belt. A drive motor is installed at one end of the conveying roller, and the drive motor is fixedly installed below the tooling platform. At the same time, a transmission mechanism is provided at the bottom of the three cross beam structures, and the transmission mechanism is connected to the sliding base coupling.

[0006] As a further solution of the present invention, the bottom beam includes a steel beam, the upper end of the steel beam is padded with a pad, a hydraulic push rod is fixedly installed inside the pad, and a roller is fixedly installed on the upper end of the hydraulic push rod, and the roller is installed on the bottom surface of the beam structure.

[0007] As a further solution of the present invention, the crossbeam structure includes a first crossbeam and a second crossbeam which are symmetrically installed. Hinges are installed at the bottoms of the first crossbeam and the second crossbeam and they are hinged through the hinges. A support base is installed at the bottom of the hinge, and the support base is placed on the ground.

[0008] As a further solution of the present invention, both the first crossbeam and the second crossbeam are right trapezoids with a wider upper part and a narrower lower part, and the inclination angles of the hypotenuses of the first crossbeam and the second crossbeam.

[0009] As a further solution of the present invention, the tooling platform includes a first support platform and a second support platform. Both the first support platform and the second support platform are in the shape of the letter 'E'. A third support platform and a fourth support platform which are hinged are installed inside the first support platform and the second support platform. A support column is connected between the third support platform and the fourth support platform. The bottom of the support column penetrates the crossbeam structure and the steel skeleton and is fixedly installed on the ground. The fourth support platform and the third support platform as a whole are in the shape of the character '丰' and are engaged in the middle of the first support platform and the second support platform. Among them, chutes are provided inside the first support platform and the second support platform, and blocks are installed at both ends of the fourth support platform and the third support platform. The blocks are slidably installed inside the chutes.

[0010] As a further solution of the present invention, the transmission mechanism includes a first transmission shaft and a second transmission shaft. At both ends and in the middle of the first transmission shaft and the second transmission shaft, a set of third transmission shafts and fourth transmission shafts are respectively connected through gearboxes. The third transmission shafts and the fourth transmission shafts are respectively connected to two sliding bases above through chains. And at both ends and in the middle of the first transmission shaft, second meshing gears are installed. At both ends and in the middle of the second transmission shaft, first meshing gears are installed. A transmission gear is simultaneously engaged between the first meshing gears and the second meshing gears, and the transmission gear is externally connected to a drive.

[0011] As a further solution of the present invention, a notch is provided in the middle of the first support platform and the second support platform, and the conveying roller is installed in the notch.

[0012] As a further solution of the present invention, the support platform is movably arranged on the overhead rail. The welding robot is arranged on the support platform and below the support platform. The welding robot is arranged on the support platform to move along with the support platform.

[0013] The beneficial effects of a welding robot for the rear beam of a special vehicle provided by the present invention are as follows:

[0014] By setting up a three-layer welding platform, the welding platform is used to support and position the workpiece, which is convenient for welding processing of the workpiece. Two sliding bases are set on the beam structure. The sliding base is driven and connected with the transmission mechanism, so that the transmission mechanism can indirectly drive the tooling platform to deform, so that the first support platform and the second support platform are respectively moved to both sides and expanded, thereby changing the overall width of the tooling platform to support the workpiece. At the same time, since the first beam and the second beam are hinged by hinges, under the lifting support of the beam structure by the roller, when the roller on either side of the beam structure descends, the sliding base and the transmission mechanism can also be stably connected when one side of the beam structure is flipped, so as to achieve the purpose of leaving space on the edge and bottom of the workpiece, which is convenient for welding on both sides and the bottom of the workpiece, and avoids reverse welding when the workpiece is inconvenient to flip due to the weight of the workpiece, thereby improving welding efficiency and ensuring welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the structure of a welding robot for a rear end beam of a special vehicle provided in this application;

[0017] Figure 2 Schematic diagram of the welding platform structure of a welding robot for a special vehicle rear end beam provided in this application Figure 1 ;

[0018] Figure 3 Schematic diagram of the welding platform structure of a welding robot for a special vehicle rear end beam provided in this application Figure 2 ;

[0019] Figure 4 A schematic diagram of the bottom beam structure of a welding robot for a special vehicle rear end beam provided in this application;

[0020] Figure 5 Schematic diagram of the crossbeam structure of a welding robot for a special vehicle rear end beam provided in this application Figure 1 ;

[0021] Figure 6 Schematic diagram of the crossbeam structure of a welding robot for a special vehicle rear end beam provided in this application Figure 2 ;

[0022] Figure 7This is a schematic diagram of the tooling platform structure of a welding robot for a special vehicle rear end beam provided in this application;

[0023] Figure 8 A schematic diagram of the transmission mechanism structure of a welding robot for a special vehicle rear end beam provided in this application;

[0024] Figure 9 This is a schematic diagram of the conveyor roller structure of a welding robot for a special vehicle rear end beam provided in this application;

[0025] Figure 10 for Figure 6 A magnified schematic diagram of the structure at A;

[0026] Figure 11 for Figure 8 A magnified schematic diagram of the structure at point B.

[0027] Figure: 1. Overhead rail; 2. Support platform; 3. Welding robot; 4. Welding platform; 41. Bottom beam; 411. Steel beam; 412. Pad; 413. Hydraulic push rod; 414. Roller; 42. Clamping gantry; 43. Crossbeam structure; 431. First crossbeam; 432. Second crossbeam; 433. Hinge; 434. Support base; 44. Sliding base; 45. Tooling platform; 451. First support platform; 452. Second support platform; 453 , third support platform; 454, fourth support platform; 455, notch; 456, slide groove; 457, block; 458, support column; 46, transmission mechanism; 461, first transmission shaft; 462, second transmission shaft; 463, third transmission shaft; 464, fourth transmission shaft; 465, first meshing gear; 466, second meshing gear; 467, transmission gear; 47, drive motor; 48, conveyor roller; 49, synchronous belt; 410, steel frame. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0029] like Figures 1-11As shown, this embodiment proposes a welding robot for the rear end beam of a special vehicle, including a ceiling rail 1, a supporting platform 2, a welding robot 3 and a welding platform 4. The welding platform 4 includes two bottom beams 41, and two clamping gantries 42 are slidably installed at both ends of the bottom beam 41. Three cross beam structures 43 are installed in the middle of the bottom beam 41. The upper ends of the three cross beam structures 43 are symmetrically installed with two movable sliding bases 44. A steel frame 410 is fixedly installed on the upper end of the sliding base 44. The upper end surface of the steel frame 410 is fixedly connected to a tooling platform 45. A plurality of conveying rollers 48 are also installed in the middle of the tooling platform 45. The plurality of conveying rollers 48 are synchronously connected to a synchronous belt 49. A drive motor 47 is installed at one end of the conveying roller 48. The drive motor 47 is fixedly installed below the tooling platform 45. At the same time, a transmission mechanism 46 is provided at the bottom of the three cross beam structures 43, and the transmission mechanism 46 is connected to the sliding base 44 by a coupling.

[0030] The bottom beam 41 includes a steel beam 411, and a pad 412 is placed on the upper end of the steel beam 411. A hydraulic push rod 413 is fixedly installed inside the pad 412, and a roller 414 is fixedly installed on the upper end of the hydraulic push rod 413. The roller 414 is installed on the bottom surface of the beam structure 43. The bottom beam 41 installs and supports the beam structure 43 to ensure the stability of the device during use. At the same time, the liftable roller 414 is used to control the inclination angle of the beam structure 43 to facilitate processing of the bottom surface of the workpiece.

[0031] The beam structure 43 includes a first beam 431 and a second beam 432 installed symmetrically. Hinges 433 are installed at the bottom of the first beam 431 and the second beam 432 and are hinged through the hinges 433. A support base 434 is installed at the bottom of the hinge 433. The support base 434 is placed on the ground. The first beam 431 and the second beam 432 are hinged through the hinges 433, and the two ends are supported by rollers 414, so as to achieve the purpose of opening the first beam 431 or the second beam 432 to both sides respectively, and process the bottom surfaces of both sides of the workpiece fixed on the tooling platform 45.

[0032] The two clamping gantries 42 are slidably installed at both ends of the bottom beam 41, and move on the bottom beam 41 through rollers, so that they can be moved above the workpiece. The cylinder and clamping assembly installed on the clamping gantry 42 are used to clamp the workpiece to prevent stress deformation during welding.

[0033] Both the first crossbeam 431 and the second crossbeam 432 are right trapezoids with a wider upper part and a narrower lower part. The inclination angles of the hypotenuses of the first crossbeam 431 and the second crossbeam 432 are such that the bottom hypotenuses of the first crossbeam 431 and the second crossbeam 432 are in tight contact with the roller 414. When the roller 414 descends, the first crossbeam 431 or the second crossbeam 432 will tilt downward, synchronously driving the tooling platform 45 and the steel skeleton 410 to tilt, separating the tooling platform 45 from the bottom surface of the workpiece, clamping one side of the workpiece while performing welding processing on the bottom surface of the other side.

[0034] The tooling platform 45 includes a first support platform 451 and a second support platform 452. Both the first support platform 451 and the second support platform 452 are in the shape of the letter 'E'. A third support platform 453 and a fourth support platform 454 are hingedly installed inside the first support platform 451 and the second support platform 452. A support column 458 is connected in the middle of the third support platform 453 and the fourth support platform 454. The bottom of the support column 458 penetrates through the crossbeam structure 43 and the steel skeleton 410 and is fixedly installed on the ground. The overall shape of the fourth support platform 454 and the third support platform 453 is like the Chinese character '丰' and is engaged in the middle of the first support platform 451 and the second support platform 452. Among them, chutes 456 are provided inside the first support platform 451 and the second support platform 452. Blocks 457 are installed at both ends of the fourth support platform 454 and the third support platform 453, and the blocks 457 are slidably installed inside the chutes 456. The first support platform 451 and the second support platform 452 are respectively connected to the first crossbeam 431 and the second crossbeam 432, and there are movable connections between the first support platform 451 and the third support platform 453, and between the second support platform 452 and the fourth support platform 454. The third support platform 453 and the fourth support platform 454 play the role of extension and connection, enabling the first support platform 451 and the second support platform 452 to not only translate to both sides to increase the overall width of the tooling platform 45, but also fold the first support platform 451 or the second support platform 452 downward to expose the bottom surface of the workpiece while ensuring the stability of the workpiece, facilitating the welding processing of the workpiece.

[0035] The transmission mechanism 46 includes a first transmission shaft 461 and a second transmission shaft 462. The two ends and the middle of the first transmission shaft 461 and the second transmission shaft 462 are respectively connected to a group of third transmission shafts 463 and fourth transmission shafts 464 through a gear box. The third transmission shaft 463 and the fourth transmission shaft 464 are respectively connected to the two sliding bases 44 above for chain connection, and the two ends and the middle of the first transmission shaft 461 are installed with second meshing gears 466, and the two ends and the middle of the second transmission shaft 462 are installed with first meshing gears 465. The middle of the first meshing gear 465 and the second meshing gear 466 is simultaneously engaged with a transmission gear 467, and the transmission gear 467 is externally driven. Couplings are installed in the middle of the first transmission shaft 461, the second transmission shaft 462, the third transmission shaft 463 and the fourth transmission shaft 464 to prevent the first transmission shaft 461, the second transmission shaft 462, the third transmission shaft 463 and the fourth transmission shaft 464 from being engaged. The transmission shaft 463 and the fourth transmission shaft 464 bear excessive load when rotating, which plays the role of overload protection, and through the meshing of the transmission gear 467 with the second meshing gear 466, the transmission gear 467 and the first meshing gear 465, the first transmission shaft 461 and the second transmission shaft 462 ensure that they rotate at the same speed and in the same direction, so as to better drive the sliding bases 44 on both sides above to move. Secondly, due to the meshing of the transmission gear 467 with the second meshing gear 466, the transmission gear 467 and the first meshing gear 465, it is ensured that when the roller 414 on either side of the beam structure 43 descends, the sliding base 44 and the transmission mechanism 46 can still be stably connected when one side of the beam structure 43 is flipped, so as to achieve the purpose of leaving space on the edge and bottom of the workpiece, so as to facilitate welding on both sides and the bottom of the workpiece, and avoid reverse welding when the workpiece is inconvenient to flip due to the weight of the workpiece.

[0036] A lifting cylinder is also installed on the upper end surface of the sliding base 44, which pushes the tooling platform 45 to lift the tooling platform 45 and the workpiece fixed on the tooling platform 45, so as to separate the workpiece from the conveying roller 48 and prevent the workpiece from continuing to roll.

[0037] A gap 455 is provided in the middle of the first support platform 451 and the second support platform 452, and the conveying roller 48 is installed in the gap 455. The conveying roller 48 is installed in the middle of the tooling platform 45 through the gap 455. The conveying roller 48 is too high above the bottom surface of the workpiece, which makes it convenient to drive the workpiece to be loaded and unloaded and moved when the conveying roller 48 rolls, saving manpower.

[0038] The support platform 2 is movably arranged on the overhead rail 1, the welding robot 3 is arranged on the support platform 2 and is located below the support platform 2, the welding robot 3 is arranged on the support platform 2 to move with the support platform 2, and the support platform 2 is installed with a drag chain, which moves with the support platform 2 on the overhead rail 1, so that the welding robot 3 can flexibly perform welding processing.

[0039] Specifically, when the welding robot of the rear end beam of this special vehicle is in use: the upper ends of the first crossbeam 431 and the second crossbeam 432 are also provided with a transverse guide rail, and the sliding base 44 is connected to the transverse guide rail through a screw, and the screw and the transmission mechanism 46 are chain-driven to control the sliding base 44 to move laterally along the crossbeam structure 43, and indirectly adjust the width of the tooling platform 45, so as to adapt to workpieces of different widths for processing. When the bottom surface of the workpiece needs to be processed, the hydraulic push rod 413 installed on the bottom beam 41 on the side to be processed is pressed down, so that The same side portion of the crossbeam structure 43 is lowered along the hinge 433, and at the same time, the sliding base 44, the steel frame 410 and the same side portion of the tooling platform 45 installed on the same side of the crossbeam structure 43 are folded, exposing the bottom surface of one side of the workpiece clamped between the tooling platform 45 and the clamping gantry 42, so that the welding robot 3 can process the bottom surface of the workpiece. After processing, the bottom beam 41 can lift up the crossbeam structure 43, and the same operation can be performed on the opposite side. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0040] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A welding robot for a rear end beam of a special vehicle, comprising a ceiling rail (1), a support platform (2), a welding robot arm (3) and a welding platform (4), characterized in that: The welding platform (4) includes two bottom beams (41). Two pressing gantries (42) are slidably installed at both ends of the bottom beam (41). Three crossbeam structures (43) are installed in the middle of the bottom beam (41). Two movable sliding bases (44) are symmetrically installed at the upper ends of the three crossbeam structures (43). A steel skeleton (410) is fixedly installed on the upper end of the sliding base (44). A tooling platform (45) is fixedly connected to the upper end surface of the steel skeleton (410). A plurality of conveying rollers (48) are also installed in the middle of the tooling platform (45). The plurality of conveying rollers (48) are synchronously connected to a synchronous belt (49). A driving motor (47) is installed at one end of the conveying roller (48). The driving motor (47) is fixedly installed below the tooling platform (45). At the same time, a transmission mechanism (46) is provided at the bottom of the three crossbeam structures (43). The transmission mechanism (46) is connected to the sliding base (44) through a coupling; The bottom beam (41) includes a steel beam (411). A cushion plate (412) is placed on the upper end of the steel beam (411). A hydraulic push rod (413) is fixedly installed inside the cushion plate (412). A roller (414) is fixedly installed at the upper end of the hydraulic push rod (413). The roller (414) is installed on the bottom surface of the crossbeam structure (43); The crossbeam structure (43) includes a first crossbeam (431) and a second crossbeam (432) which are symmetrically installed. Hinges (433) are installed at the bottom of the first crossbeam (431) and the second crossbeam (432) and are hinged through the hinges (433). A support base (434) is installed at the bottom of the hinge (433). The support base (434) is placed on the ground; The tooling platform (45) includes a first support platform (451) and a second support platform (452). Both the first support platform (451) and the second support platform (452) are in the shape of the letter 'E'. A third support platform (453) and a fourth support platform (454) which are hinged are respectively installed inside the first support platform (451) and the second support platform (452). A support column (458) is connected between the third support platform (453) and the fourth support platform (454). The bottom of the support column (458) penetrates the crossbeam structure (43) and the steel skeleton (410) and is fixedly installed on the ground. The fourth support platform (454) and the third support platform (453) are integrally in the shape of the character 'Feng' and are engaged in the middle of the first support platform (451) and the second support platform (452). Among them, chutes (456) are opened inside the first support platform (451) and the second support platform (452). Blocks (457) are installed at both ends of the fourth support platform (454) and the third support platform (453). The blocks (457) are slidably installed inside the chutes (456).

2. A welding robot for a special vehicle rear end beam according to claim 1, characterized in that: Both the first crossbeam (431) and the second crossbeam (432) are right trapezoids with a wider upper part and a narrower lower part.

3. The welding robot for a special vehicle rear end beam according to claim 1, characterized in that: The transmission mechanism (46) includes a first transmission shaft (461) and a second transmission shaft (462), and the ends and the middle of the first transmission shaft (461) and the second transmission shaft (462) are connected to a group of third transmission shafts (463) and fourth transmission shafts (464) through a gear box. The third transmission shaft (463) and the fourth transmission shaft (464) are respectively connected to the two sliding bases (44) above in a chain manner, and the ends and the middle of the first transmission shaft (461) are both installed with second meshing gears (466), and the ends and the middle of the second transmission shaft (462) are both installed with first meshing gears (465), and the middle of the first meshing gear (465) and the second meshing gear (466) are simultaneously meshed and connected with a transmission gear (467), and the transmission gear (467) is externally driven.

4. The welding robot for a special vehicle rear end beam according to claim 1, characterized in that: A notch (455) is provided in the middle of the first support platform (451) and the second support platform (452), and the conveying roller (48) is installed in the notch (455).

5. The welding robot for a special vehicle rear end beam according to claim 1, characterized in that: The support platform (2) is movably arranged on the ceiling rail (1); the welding robot (3) is arranged on the support platform (2) and is located below the support platform (2); the welding robot (3) is arranged on the support platform (2) to move along with the support platform (2).

Images