Welding robot for rear end beam of special vehicle

Abstract

The invention relates to the technical field of machining, and provides a special vehicle rear end beam welding robot which comprises a sky rail, a supporting platform, a welding manipulator and a welding platform, the welding platform comprises two bottom beams, two pressing gantries are slidably installed at the two ends of each bottom beam respectively, and three cross beam structures are installed in the middles of the bottom beams; two movable sliding bases are symmetrically installed at the upper ends of the three cross beam structures, a steel framework is fixedly installed at the upper ends of the sliding bases, and a tool platform is fixedly connected to the upper end face of the steel framework. The overall width of the tool platform can be conveniently changed, a workpiece can be supported, the sliding base and the transmission mechanism can be stably connected under the condition that one side of the cross beam structure is turned over, the purpose that the space of the edges and the bottom face of the workpiece is reserved is achieved, and the two edges and the bottom face of the workpiece can be conveniently welded; and reverse welding under the condition that the workpiece is inconvenient to turn over due to the weight of the workpiece is avoided, so that the welding efficiency is improved, and the welding quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a welding robot for a rear end beam of a special vehicle. 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 manual operation level, and the welding quality stability is poor. The welding workbench of the rear end beam of special-purpose vehicles on the market is an ordinary platform, which 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 to operate, and the rear end beam of the special-purpose vehicle needs to be re-positioned and corrected, which affects the welding efficiency and welding quality of the rear end beam of the special-purpose vehicle.

[0003] Therefore, we made improvements to this and proposed a welding robot for the rear end beam of a special vehicle. Summary of the invention

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

[0005] In order to achieve the above-mentioned invention object, the present invention provides a welding robot for the rear end beam of a special vehicle, including a ceiling rail, a supporting platform, a welding robot and a welding platform, wherein the welding platform includes two bottom beams, 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 a tooling platform is fixedly connected to the upper end surface of the steel frame, and a plurality of conveying rollers are also installed in the middle of the tooling platform, and the plurality of conveying rollers are synchronously connected with a synchronous belt, and a driving motor is installed at one end of the conveying roller, and the driving motor is fixedly installed below the tooling platform, and 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, a pad is placed on the upper end of the steel beam, a hydraulic push rod is fixedly installed inside the pad, 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 notch as a whole are in the shape of the Chinese character '丰' and are咬合 (it should be 'engaged' in English) in the middle of the first support platform and the second support platform. Among them, chutes are opened inside the first support platform and the second support platform, and blocks are installed at both ends of the fourth support platform and the notch. 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 group of third transmission shafts and fourth transmission shafts are respectively connected through gearboxes. The third transmission shafts and the fourth transmission shafts are respectively chain-connected to two sliding bases above. 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 and connected between the first meshing gears and the second meshing gears. The transmission gear is externally connected to a drive. As a further solution of the present invention, a notch is opened in the middle of the first support platform and the second support platform, and the conveying roller is installed in the notch.

[0011] 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.

[0012] The beneficial effects of a welding robot for the rear beam of a special vehicle provided by the present invention are: 1. 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 connected to the driving mechanism of 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 unfolded, so as to change the overall width of the tooling platform and 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, so as to facilitate welding processing 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, thereby improving the welding efficiency and ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0014] Figure 1 A structural schematic diagram of a welding robot for a rear end beam of a special vehicle provided in this application; 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 ; 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 ; Figure 4 A schematic diagram of the bottom beam structure of a welding robot for a rear end beam of a special vehicle provided in this application; 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 ; 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 ; Figure 7 A schematic diagram of the structure of a tooling platform of a welding robot for a rear end beam of a special vehicle provided in this application; Figure 8 A schematic diagram of the transmission mechanism structure of a welding robot for a rear end beam of a special vehicle provided in this application; Fig. 9 A schematic diagram of the conveyor roller structure of a welding robot for a rear end beam of a special vehicle provided in this application; Fig.10 for Figure 6 A schematic diagram of the structure at A; Fig.11 for Figure 8 Enlarged schematic diagram of the structure at B.

[0015] In the 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, beam structure; 431, first beam; 432, second beam; 433, hinge; 434, support seat; 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

[0016] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0017] like Figure 1-Figure 11 As shown, the present embodiment proposes a welding robot for a rear end beam of a special vehicle, comprising a ceiling rail 1, a supporting platform 2, a welding robot 3 and a welding platform 4, wherein the welding platform 4 comprises two bottom beams 41, two ends of the bottom beam 41 are respectively slidably mounted with two clamping gantries 42, the middle of the bottom beam 41 is mounted with three cross beam structures 43, the upper ends of the three cross beam structures 43 are symmetrically mounted with two movable sliding bases 44, a steel skeleton 410 is fixedly mounted 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 mounted in the middle of the tooling platform 45, the plurality of conveying rollers 48 are synchronously connected with a synchronous belt 49, a driving motor 47 is mounted at one end of the conveying roller 48, the driving motor 47 is fixedly mounted below the tooling platform 45, and a transmission mechanism 46 is arranged 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.

[0018] 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. 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 when in use. At the same time, the tilt angle of the beam structure 43 is controlled by the liftable roller 414 to facilitate processing of the bottom surface of the workpiece.

[0019] The beam structure 43 includes a first beam 431 and a second beam 432 which are symmetrically installed. Hinges 433 are installed at the bottom of the first beam 431 and the second beam 432 and are hinged by the hinges 433. A support seat 434 is installed at the bottom of the hinge 433. The support seat 434 is placed on the ground. The first beam 431 and the second beam 432 are hinged by the hinges 433, and both 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.

[0020] The two clamping gantries 42 are slidably installed at the two ends of the bottom beam 41 respectively, and move on the bottom beam 41 through rollers, so as to 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 of the workpiece.

[0021] The first crossbeam 431 and the second crossbeam 432 are both right-angled trapezoids that are wide at the top and narrow at the bottom, and the hypotenuse angles of the first crossbeam 431 and the second crossbeam 432, and the bottom hypotenuses of the first crossbeam 431 and the second crossbeam 432 are pressed against 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 frame 410 to tilt, separating the tooling platform 45 from the bottom surface of the workpiece, so that one side of the workpiece is clamped while the bottom surface of the other side is welded.

[0022] The tooling platform 45 includes a first support table 451 and a second support table 452. Both the first support table 451 and the second support table 452 are in the shape of the letter 'E'. An articulated third support table 453 and a fourth support table 454 are installed inside the first support table 451 and the second support table 452. A support column 458 is connected between the middle of the third support table 453 and the fourth support table 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 fourth support table 454 and the notch 455 are integrally in the shape of the character '丰' and are engaged in the middle of the first support table 451 and the second support table 452. Among them, sliding grooves 456 are provided inside the first support table 451 and the second support table 452. Clamping blocks 457 are installed at both ends of the fourth support table 454 and the notch 455. The clamping blocks 457 are slidably installed inside the sliding grooves 456. The first support table 451 and the second support table 452 are respectively connected to the first crossbeam 431 and the second crossbeam 432. And the first support table 451 and the third support table 453, and the second support table 452 and the fourth support table 454 are movably connected. The third support table 453 and the fourth support table 454 play the role of extension and connection, enabling the first support table 451 and the second support table 452 to translate to both sides, playing the role of increasing the overall width of the tooling platform 45, and also enabling the first support table 451 or the second support table 452 to be folded downwards, exposing the bottom surface of the workpiece while ensuring the stability of the workpiece, facilitating the welding processing of the workpiece.

[0023] 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 chain-connected to the two sliding bases 44 above, and the two ends and the middle of the first transmission shaft 461 are both installed with second meshing gears 466, and the two ends and the middle of the second transmission shaft 462 are both installed with first meshing gears 465. The middle of the first meshing gear 465 and the second meshing gear 466 is simultaneously meshed and connected with a transmission gear 467. The transmission gear 467 is externally driven, and the middle of the first transmission shaft 461, the second transmission shaft 462, the third transmission shaft 463, and the fourth transmission shaft 464 are all installed with couplings 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 are subjected to excessive load when rotating, which plays a role of overload protection. 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 are guaranteed to rotate at the same speed and in the same direction, so as to better drive the sliding base 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, when one side of the beam structure 43 is flipped, the sliding base 44 and the transmission mechanism 46 can still be stably connected 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.

[0024] 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 that the workpiece is separated from the conveying roller 48 to prevent the workpiece from continuing to roll. A gap 455 is provided in the middle of the first support platform 451 and the second support platform 452, and a 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, so that the workpiece can be driven to load and unload and move when the conveying roller 48 rolls, thereby saving manpower.

[0025] The supporting platform 2 is movably arranged on the overhead rail 1, the welding robot 3 is arranged on the supporting platform 2 and is located below the supporting platform 2, the welding robot 3 is arranged on the supporting platform 2 to move with the supporting platform 2, the supporting platform 2 is installed with a drag chain, and the drag chain moves with the supporting platform 2 on the overhead rail 1, so that the welding robot 3 can flexibly perform welding processing.

[0026] Specifically, when the welding robot of the rear end beam of the 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, 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 swung down 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, so that the bottom surface of one side of the workpiece clamped between the tooling platform 45 and the clamping gantry 42 is exposed, 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 contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0027] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is 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 included in 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 (3) and a welding platform (4), characterized in that: The welding platform (4) includes two bottom beams (41). At both ends of the bottom beam (41), two pressing gantries (42) are slidably installed respectively. In the middle of the bottom beam (41), three crossbeam structures (43) are installed. At the upper ends of the three crossbeam structures (43), two movable sliding bases (44) are symmetrically installed. On the upper end of the sliding base (44), a steel skeleton (410) is fixedly installed. On the upper end face of the steel skeleton (410), a tooling platform (45) is fixedly connected. In the middle of the tooling platform (45), a plurality of conveying rollers (48) are also installed. The plurality of conveying rollers (48) are synchronously connected with a synchronous belt (49). One end of the conveying roller (48) is provided with a driving motor (47). The driving motor (47) is fixedly installed below the tooling platform (45). At the same time, a transmission mechanism (46) is arranged at the bottom of the three crossbeam structures (43). The transmission mechanism (46) is connected with the sliding base (44) through a coupling.

2. The welding robot for the rear end beam of a special vehicle according to claim 1, characterized in that: The bottom beam (41) includes a steel beam (411). A backing plate (412) is placed on the upper end of the steel beam (411). Inside the backing plate (412), a hydraulic push rod (413) is fixedly installed. At the upper end of the hydraulic push rod (413), a roller (414) is fixedly installed. The roller (414) is installed on the bottom surface of the crossbeam structure (43).

3. The welding robot for the rear end beam of a special vehicle according to claim 1, characterized in that: The crossbeam structure (43) includes a first crossbeam (431) and a second crossbeam (432) which are symmetrically installed. At the bottom of the first crossbeam (431) and the second crossbeam (432), hinges (433) are installed and are hinged through the hinges (433). At the bottom of the hinge (433), a support seat (434) is installed. The support seat (434) is placed on the ground.

4. The welding robot for the rear end beam of a special vehicle according to claim 3, 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, and the inclination angles of the hypotenuses of the first crossbeam (431) and the second crossbeam (432).

5. The welding robot for the rear end beam of a special vehicle according to claim 1, characterized in that: 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'. Inside the first support platform (451) and the second support platform (452), a third support platform (453) and a fourth support platform (454) which are hinged are installed. Between the third support platform (453) and the fourth support platform (454), a support column (458) is connected. 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 fourth support platform (454) and the notch (455) are integrally in the shape of the character '丰' and are咬合 (the specific Chinese character here seems to be incorrect, it might be 'clamped') in the middle of the first support platform (451) and the second support platform (452). Among them, chutes (456) are opened on the inner sides of the first support platform (451) and the second support platform (452). At both ends of the fourth support platform (454) and the notch (455), clamping blocks (457) are installed. The clamping blocks (457) are slidably installed inside the chutes (456).

6. The welding robot for the rear end beam of a special vehicle according to claim 1, characterized in that: The transmission mechanism (46) comprises a first transmission shaft (461) and a second transmission shaft (462); both 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 chain-connected to two upper sliding bases (44); both ends and the middle of the first transmission shaft (461) are equipped with second meshing gears (466); both ends and the middle of the second transmission shaft (462) are equipped with first meshing gears (465); the middle of the first meshing gear (465) and the second meshing gear (466) are meshedly connected with a transmission gear (467); the transmission gear (467) is externally driven.

7. The welding robot for the rear end beam of a special vehicle according to claim 5, 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).

8. The welding robot for the rear end beam of a special vehicle 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), and the welding robot (3) is arranged on the support platform (2) to move with the support platform (2).

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