Stepping mobile robot trolley suitable for welding operation

Abstract

The utility model relates to the technical field of welding tools, aims to solve the problems of incapability of automatic welding, incapability of automatic walking, low welding efficiency and inflexibility in the prior art, and provides a stepping mobile robot trolley suitable for welding operation, which comprises a mobile base, the top of the movable base is slidably connected with a movable frame. A driving mechanism is arranged on the top surface of the movable base, is perpendicular to the movable frame and is in meshed connection with the movable frame; welding assemblies are further arranged on the top face of the movable base and evenly distributed on the top face of the movable base. A first spiral elevator, a second spiral elevator, a third spiral elevator and a fourth spiral elevator are arranged at the four corners of the movable base correspondingly, and a fifth spiral elevator, a sixth spiral elevator, a seventh spiral elevator and an eighth spiral elevator are arranged at the four corners of the movable frame correspondingly. The automatic welding machine has the advantages of being capable of automatically welding and walking, high in welding efficiency and flexible in welding.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding tool technical field, specifically, step -by -step mobile robot trolley suitable for welding operation. BACKGROUND

[0002] Welding is indispensable in daily life of various trades and professions, for some places difficult to manually weld, there is no better way to realize welding at present, and the existing welding technology is not flexible enough, the efficiency is not high, cannot automatically weld, cannot automatically walk. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a step -by -step mobile robot trolley suitable for welding operation to solve the problems of unable to automatically weld, unable to automatically walk, low welding efficiency and not flexible enough in the prior art.

[0004] The embodiment of the utility model is realized as follows:

[0005] The utility model embodiment provides a step -by -step mobile robot trolley suitable for welding operation, it includes mobile base,

[0006] The top of mobile base is equipped with mobile frame, mobile frame is slidably connected on the top surface of mobile base,

[0007] The top surface of mobile base is equipped with drive mechanism, drive mechanism is perpendicular to mobile frame and is in gear connection with mobile frame, the top surface of mobile base is also equipped with welding assembly, welding assembly is evenly distributed on the top surface of mobile base,

[0008] The four corners of mobile base are equipped with first screw elevator, second screw elevator, third screw elevator and fourth screw elevator, and the four corners of mobile frame are equipped with fifth screw elevator, sixth screw elevator, seventh screw elevator and eighth screw elevator.

[0009] In use, first, the first screw lifter, the second screw lifter, the third screw lifter and the fourth screw lifter on the mobile base are screwed out downward to lift the mobile base, and the fifth screw lifter, the sixth screw lifter, the seventh screw lifter and the eighth screw lifter on the mobile frame are retracted upward, second, the driving mechanism drives the mobile frame to slide on the mobile base, then the fifth screw lifter, the sixth screw lifter, the seventh screw lifter and the eighth screw lifter on the mobile frame are screwed out downward, and the first screw lifter, the second screw lifter, the third screw lifter and the fourth screw lifter on the mobile base are retracted upward, the driving mechanism drives the mobile base to move along the mobile frame, and finally, the above steps are repeated to realize the stepping of the trolley.

[0010] The mobile robot trolley for welding disclosed in the embodiment is suitable for welding and has the advantages of automatic welding, automatic walking, high welding efficiency and flexible welding.

[0011] Optionally, the mobile frame has a first long rod and a second long rod, the first long rod and the second long rod are parallel and spaced apart, and a first short rod and a second short rod are respectively fixedly connected between the two ends of the first long rod and the second long rod.

[0012] The inner sides of the first long rod and the second long rod are fixedly connected with racks, and the driving mechanism is toothedly connected with the racks.

[0013] In this way, the racks are installed on the first long rod and the second long rod, and the mobile frame is moved under the action of the driving mechanism.

[0014] Optionally, the driving mechanism has a driving motor, and the side surface of the driving motor is fixedly connected to the top surface of the mobile base.

[0015] Thus, the driving motor provides driving force for the movement of the moving frame. By rotating the driving motor in the forward and reverse directions, the driving mechanism can move forward or backward on the rack, thereby driving the moving base to move along the axis of the moving frame, and thus achieving step-by-step movement.

[0016] Optionally, the output shaft of the driving motor is connected with a steering device, the steering device has a first coupling and a second coupling on both sides, the outer end of the first coupling is fixedly connected with a first transmission rod, the outer end of the second coupling is fixedly connected with a second transmission rod, the first transmission rod has a first gear at the end away from the first coupling, the first gear is connected with the rack of the first long rod, the second transmission rod has a second gear at the end away from the second coupling, and the second gear is connected with the rack of the second long rod.

[0017] Thus, when the moving frame needs to move, the first spiral elevator, the second spiral elevator, the third spiral elevator and the fourth spiral elevator are retracted, the driving motor drives the steering device, the steering device drives the first coupling and the second coupling to rotate clockwise at the same time, the first gear and the second gear on the first transmission rod and the second transmission rod drive the rack to move, thereby making the moving frame step-by-step.

[0018] When the moving base needs to move, the first spiral elevator, the second spiral elevator, the third spiral elevator and the fourth spiral elevator are lowered, the fifth spiral elevator, the sixth spiral elevator, the seventh spiral elevator and the eighth spiral elevator are retracted, the driving motor drives the steering device, the steering device drives the first coupling and the second coupling to rotate counterclockwise at the same time, the first gear and the second gear on the first transmission rod and the second transmission rod move on the rack, thereby making the moving base step-by-step.

[0019] Optionally, the first spiral elevator, the second spiral elevator, the third spiral elevator, the fourth spiral elevator, the fifth spiral elevator, the sixth spiral elevator, the seventh spiral elevator and the eighth spiral elevator all have a sleeve, and the sleeve is bolted to the moving base or the moving frame.

[0020] The shaft of the sleeve is provided with a screw rod, the screw rod is rotatable and penetrates the moving base or the moving frame, one side of the sleeve is provided with an adjusting motor for controlling the lifting of the screw rod, and the output shaft of the adjusting motor is drivingly connected to the screw rod inside the sleeve.

[0021] Thus, by adjusting the motor, the screw inside the sleeve is driven to rotate, and the screw is controlled to ascend and descend, thereby alternatingly supporting the moving base or the moving frame, and facilitating the stepping under the action of the driving mechanism.

[0022] Optionally, the bottom end of the screw is provided with a base, the diameter of the base is greater than that of the screw, and the base is fixedly connected to the bottom end of the screw.

[0023] Thus, the base can disperse the pressure transmitted by the screw, avoid the screw sinking into the working platform, and improve the stability of the trolley.

[0024] Optionally, the side surface of the sleeve is provided with a plurality of reinforcing members, and the reinforcing members are uniformly distributed along the circumferential direction of the sleeve.

[0025] Thus, the reinforcing members can improve the strength of the sleeve, facilitate the displacement of the screw, and ensure the normal operation of the first, second, third, fourth, fifth, sixth, seventh and eighth screw elevators.

[0026] Optionally, the welding assembly is provided with a first electric control cabinet, the two sides of the first electric control cabinet are respectively provided with a first welding machine and a second welding machine, the first electric control cabinet is electrically connected to the first welding machine and the second welding machine, the first welding machine is connected with a first welding gun, and the second welding machine is connected with a second welding gun.

[0027] One side of the first welding gun is provided with a first wire feeder, the side of the first wire feeder away from the first welding gun is provided with a first wire reel, the bottom of the first wire feeder and the first wire reel is connected with an angle-adjustable first bottom frame, the first bottom frame is located at one side of the moving frame and is fixedly connected to the moving base, and the welding wire on the first wire reel is connected to the first welding gun through the first wire feeder.

[0028] One side of the second welding gun is provided with a second wire feeder, the side of the second wire feeder away from the second welding gun is provided with a second wire reel, the bottom of the second wire feeder and the second wire reel is connected with an angle-adjustable second bottom frame, the second bottom frame is located at the other side of the moving frame and is fixedly connected to the moving base, and the welding wire on the second wire reel is connected to the second welding gun through the second wire feeder.

[0029] Thus, the first electric control cabinet controls the first welding machine and the second welding machine, the first welding machine and the second welding machine control the first welding gun and the second welding gun to weld, the first welding gun is provided with welding wire by the first wire reel and the first wire feeder, the second welding gun is provided with welding wire by the second wire reel and the second wire feeder, and the first base frame and the second base frame can adjust the angle according to the position of the first welding gun and the second welding gun, so that the first wire feeder cooperates with the first welding gun and the second wire feeder cooperates with the second welding gun.

[0030] Optionally, the first cooling water tank and the second cooling water tank are arranged between the first welding gun and the second welding gun, and the first cooling water tank and the second cooling water tank are fixedly connected to the moving base, the first cooling water tank is connected to the first welding gun through a pipeline, and the second cooling water tank is connected to the second welding gun through a pipeline.

[0031] Thus, the first cooling water tank and the second cooling water tank can be water-cooled synchronously when the first welding gun and the second welding gun work, so that the temperature of the first welding gun and the second welding gun is controlled in a controllable range, and the welding precision is ensured.

[0032] Optionally, the first welding gun is connected with a first robot, and the second welding gun is connected with a second robot, and the first robot and the second robot are located on both sides of the moving frame and are fixedly connected to the moving base.

[0033] Thus, the first robot and the second robot can control the first welding gun and the second welding gun to weld flexibly.

[0034] Optionally, the tail end of the driving motor is provided with a second electric control cabinet, and the second electric control cabinet is electrically connected to the driving motor.

[0035] Thus, the second electric control cabinet can control the driving motor to rotate clockwise or counterclockwise, so that the driving mechanism drives the moving base and the moving frame to move relative to each other to realize the stepping of the robot trolley.

[0036] In summary, the robot trolley for welding operation has the advantages of automatic welding, automatic walking, high welding efficiency and flexible welding. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows. Obviously, the following drawings only show some of the embodiments of the present application, and should not be considered as limiting the scope. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0038] Figure 1 The structure diagram of the step-by-step moving robot trolley suitable for welding operation in the embodiments of the present application.

[0039] Icon: 1 - moving base, 2 - moving frame, 3 - drive mechanism, 4 - welding assembly, 5 - first screw elevator, 6 - second screw elevator, 7 - third screw elevator, 8 - fourth screw elevator, 9 - fifth screw elevator, 10 - sixth screw elevator, 11 - seventh screw elevator, 12 - eighth screw elevator, 13 - first long rod, 14 - second long rod, 15 - first short rod, 16 - second short rod, 17 - rack, 18 - drive motor, 19 - steering device, 20 - first coupling, 21 - second coupling, 22 - first transmission rod, 23 - second transmission rod, 24 - first gear, 25 - sleeve, 26 - screw, 27 - adjusting motor, 28 - base, 29 - reinforcing member, 30 - first electric control cabinet, 31 - first welding machine, 32 - second welding machine, 33 - first welding gun, 34 - second welding gun, 35 - first wire feeder, 36 - first wire reel, 37 - first chassis, 38 - second wire feeder, 39 - second wire reel, 40 - second chassis, 41 - first cooling water tank, 42 - second cooling water tank, 43 - first robot, 44 - second robot, 45 - second electric control cabinet. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0042] EMBODIMENT

[0043] Referring to Figure 1 The embodiment provides a step-moving robot trolley suitable for welding operation, which comprises a moving base 1;

[0044] The top of the moving base 1 is provided with a moving frame 2 which is slidably connected to the top surface of the moving base 1;

[0045] The top surface of the moving base 1 is provided with a driving mechanism 3 which is perpendicular to the moving frame 2 and is in gear connection with the moving frame 2; and the top surface of the moving base 1 is also provided with welding assemblies 4 which are uniformly distributed on the top surface of the moving base 1;

[0046] The four corners of the moving base 1 are respectively provided with a first screw elevator 5, a second screw elevator 6, a third screw elevator 7 and a fourth screw elevator 8; and the four corners of the moving frame 2 are respectively provided with a fifth screw elevator 9, a sixth screw elevator 10, a seventh screw elevator 11 and an eighth screw elevator 12.

[0047] In use, first, the first screw elevator 5, the second screw elevator 6, the third screw elevator 7 and the fourth screw elevator 8 on the moving base 1 are screwed downward to lift up the moving base 1, and the fifth screw elevator 9, the sixth screw elevator 10, the seventh screw elevator 11 and the eighth screw elevator 12 on the moving frame 2 are retracted upward, then the moving frame 2 is driven to slide on the moving base 1 by the driving mechanism 3, and then the fifth screw elevator 9, the sixth screw elevator 10, the seventh screw elevator 11 and the eighth screw elevator 12 on the moving frame 2 are screwed downward, and the first screw elevator 5, the second screw elevator 6, the third screw elevator 7 and the fourth screw elevator 8 on the moving base 1 are retracted upward, the moving base 1 is driven to move along the moving frame 2 by the driving mechanism 3, and finally, the above steps are repeated to realize the step movement of the trolley.

[0048] The step-moving robot trolley suitable for welding operation disclosed by the embodiment has the beneficial effects of automatic welding, automatic walking, high welding efficiency and flexible welding, because the moving base 1 and the moving frame 2 are arranged in an interlaced and stacked manner, and the first screw elevator 5, the second screw elevator 6, the third screw elevator 7, the fourth screw elevator 8, the fifth screw elevator 9, the sixth screw elevator 10, the seventh screw elevator 11 and the eighth screw elevator 12 are arranged at the four corners of the moving base 1 and the moving frame 2, and the moving base 1 and the moving frame 2 are step-moved in an interlaced manner by the driving mechanism 3.

[0049] Referring to Figure 1The mobile frame 2 has a first long rod 13 and a second long rod 14, the first long rod 13 and the second long rod 14 are parallel and spaced with each other, and the first long rod 13 and the second long rod 14 are fixedly connected with a first short rod 15 and a second short rod 16 respectively between two ends; the inner side of the first long rod 13 and the second long rod 14 is fixedly connected with a rack 17, and the driving mechanism 3 is toothed connected with the rack 17, which is conducive to the installation of the rack 17 on the first long rod 13 and the second long rod 14, and further facilitates the movement of the mobile frame 2 under the action of the driving mechanism 3.

[0050] The driving mechanism 3 has a driving motor 18, the side surface of the driving motor 18 is fixedly connected on the top surface of the mobile base 1, and the driving motor 18 provides driving force for the movement of the mobile frame 2, and through the forward and reverse rotation of the driving motor 18, the driving mechanism 3 can move forward or backward on the rack 17, thereby driving the mobile base 1 to move along the axial direction of the mobile frame 2, and further realizing step-by-step movement.

[0051] The output shaft of the driving motor 18 is toothed connected with a steering device 19, the steering device 19 has a first coupling 20 and a second coupling 21 on both sides, the outer end of the first coupling 20 is fixedly connected with a first transmission rod 22, the outer end of the second coupling 21 is fixedly connected with a second transmission rod 23, the first transmission rod 22 has a first gear 24 on the end away from the first coupling 20, the first gear 24 is toothed connected with the rack 17 of the first long rod 13, the second transmission rod 23 has a second gear (not shown in the figure) on the end away from the second coupling 21, the second gear is toothed connected with the rack 17 of the second long rod 14, when the mobile frame 2 needs to move, the first spiral elevator 5, the second spiral elevator 6, the third spiral elevator 7 and the fourth spiral elevator 8 are retracted, the driving motor 18 drives the steering device 19, the steering device 19 simultaneously drives the first coupling 20 and the second coupling 21 to rotate clockwise, the first gear 24 and the second gear on the first transmission rod 22 and the second transmission rod 23 drive the rack 17 to move, thereby making the mobile frame 2 step-by-step;

[0052] When the mobile base 1 needs to move, the first spiral elevator 5, the second spiral elevator 6, the third spiral elevator 7 and the fourth spiral elevator 8 are lowered, the fifth spiral elevator 9, the sixth spiral elevator 10, the seventh spiral elevator 11 and the eighth spiral elevator 12 are retracted, the driving motor 18 drives the steering device 19, the steering device 19 simultaneously drives the first coupling 20 and the second coupling 21 to rotate counterclockwise, the first gear 24 and the second gear on the first transmission rod 22 and the second transmission rod 23 move on the rack 17, thereby making the mobile base 1 step-by-step.

[0053] Referring to Figure 1, the first screw elevator 5, the second screw elevator 6, the third screw elevator 7, the fourth screw elevator 8, the fifth screw elevator 9, the sixth screw elevator 10, the seventh screw elevator 11 and the eighth screw elevator 12 all have a sleeve 25, the sleeve 25 is bolted on the moving base 1 or the moving frame 2, the shaft center of the sleeve 25 is provided with a screw rod 26, the screw rod 26 can rotate through the moving base 1 or the moving frame 2, one side of the sleeve 25 is provided with an adjusting motor 27 for controlling the lifting of the screw rod 26, the output shaft of the adjusting motor 27 is drivingly connected to the screw rod 26 inside the sleeve 25, the screw rod 26 inside the sleeve 25 is driven to rotate by the adjusting motor 27, thereby controlling the lifting of the screw rod 26, which is beneficial to alternately supporting the moving base 1 or the moving frame 2, and facilitating the realization of stepping under the action of the driving mechanism 3.

[0054] The bottom end of the screw rod 26 is provided with a base 28, the diameter of the base 28 is greater than that of the screw rod 26, the base 28 is fixedly connected to the bottom end of the screw rod 26, the base 28 can disperse the pressure transmitted by the screw rod 26, avoiding the screw rod 26 sinking into the working platform, and improving the stability of the trolley.

[0055] The side of the sleeve 25 has a plurality of reinforcing pieces 29, the plurality of reinforcing pieces 29 are uniformly distributed along the circumferential direction of the sleeve 25, the plurality of reinforcing pieces 29 can improve the strength of the sleeve 25, facilitate the displacement of the screw rod 26, and ensure the normal operation of the first screw elevator 5, the second screw elevator 6, the third screw elevator 7, the fourth screw elevator 8, the fifth screw elevator 9, the sixth screw elevator 10, the seventh screw elevator 11 and the eighth screw elevator 12.

[0056] Referring to Figure 1 The welding assembly 4 has a first electric control cabinet 30, the two sides of the first electric control cabinet 30 are respectively provided with a first welding machine 31 and a second welding machine 32, the first electric control cabinet 30 is electrically connected to the first welding machine 31 and the second welding machine 32, the first welding machine 31 is connected with a first welding gun 33, and the second welding machine 32 is connected with a second welding gun 34;

[0057] One side of the first welding gun 33 is provided with a first wire feeder 35, the side away from the first welding gun 33 of the first wire feeder 35 is provided with a first wire reel 36, the bottom of the first wire feeder 35 and the first wire reel 36 is connected with an angle-adjustable first chassis 37, the first chassis 37 is located on one side of the moving frame 2 and is fixedly connected to the moving base 1, and the welding wire on the first wire reel 36 is connected to the first welding gun 33 through the first wire feeder 35;

[0058] The second welding torch 34 is provided with a second wire feeder 38 on one side, and the second wire feeder 38 is provided with a second wire reel 39 away from the one side of the second welding torch 34. The bottom of the second wire feeder 38 and the second wire reel 39 is connected with a second bottom frame 40 with adjustable angle. The second bottom frame 40 is located on the other side of the moving frame 2 and is fixedly connected to the moving base 1. The welding wire on the second wire reel 39 is connected to the second welding torch 34 through the second wire feeder 38. The first electric control cabinet 30 controls the first welding machine 31 and the second welding machine 32 simultaneously, and the first welding machine 31 and the second welding machine 32 control the first welding torch 33 and the second welding torch 34 to weld respectively. The first welding torch 33 provides welding wire through the first wire feeder 35 and the first wire reel 36. The second welding torch 34 provides welding wire through the second wire feeder 38 and the second wire reel 39. At the same time, according to the positions of the first welding torch 33 and the second welding torch 34, the first bottom frame 37 and the second bottom frame 40 can also adjust the angle, so that the first wire feeder 35 cooperates with the first welding torch 33, and the second wire feeder 38 cooperates with the second welding torch 34.

[0059] The first welding torch 33 and the second welding torch 34 are provided with a first cooling water tank 41 and a second cooling water tank 42. The first cooling water tank 41 and the second cooling water tank 42 are fixedly connected to the moving base 1. The first cooling water tank 41 is connected to the first welding torch 33 through a pipeline, and the second cooling water tank 42 is connected to the second welding torch 34 through a pipeline. The first cooling water tank 41 and the second cooling water tank 42 can be water-cooled synchronously when the first welding torch 33 and the second welding torch 34 work, so as to ensure that the temperature of the first welding torch 33 and the second welding torch 34 is within a controllable range, thereby ensuring the precision of welding.

[0060] The first welding torch 33 is connected with a first robot 43, and the second welding torch 34 is connected with a second robot 44. The first robot 43 and the second robot 44 are located on both sides of the moving frame 2 and are fixedly connected to the moving base 1. The first robot 43 and the second robot 44 can flexibly control the first welding torch 33 and the second welding torch 34 to weld.

[0061] The tail end of the driving motor 18 is provided with a second electric control cabinet 45. The second electric control cabinet 45 is electrically connected to the driving motor 18. The second electric control cabinet 45 can control the driving motor 18 to rotate clockwise or counterclockwise, so as to drive the moving base 1 and the moving frame 2 to move relative to each other, thereby realizing the stepping of the trolley.

[0062] Referring to Figure 1The specific use steps of the step-moving robot trolley suitable for the welding operation in the embodiment are as follows: firstly, the first screw lifter 5, the second screw lifter 6, the third screw lifter 7 and the fourth screw lifter 8 on the moving base 1 are screwed downward to lift the moving base 1, and the fifth screw lifter 9, the sixth screw lifter 10, the seventh screw lifter 11 and the eighth screw lifter 12 on the moving frame 2 are retracted upward;

[0063] Secondly, the driving motor 18 of the driving mechanism 3 is controlled by the second electric control cabinet 45 to rotate clockwise, and then the steering device 19 drives the first coupling 20 and the second coupling 21 to rotate clockwise, and the first gear 24 and the second gear at the end of the first transmission rod 22 and the second transmission rod 23 roll on the rack 17 inside the first long rod 13 and the second long rod 14 clockwise, so that the rack 17 is moved and the moving frame 2 is moved, when the moving frame 2 is moved to a suitable position;

[0064] Then, the fifth screw lifter 9, the sixth screw lifter 10, the seventh screw lifter 11 and the eighth screw lifter 12 on the moving frame 2 are screwed downward, the first screw lifter 5, the second screw lifter 6, the third screw lifter 7 and the fourth screw lifter 8 on the moving base 1 are retracted upward, the driving motor 18 of the driving mechanism 3 is controlled by the second electric control cabinet 45 to rotate counterclockwise, and then the steering device 19 drives the first coupling 20 and the second coupling 21 to rotate counterclockwise, and the first gear 24 and the second gear at the end of the first transmission rod 22 and the second transmission rod 23 roll on the rack 17 inside the first long rod 13 and the second long rod 14 counterclockwise, and the driving mechanism 3 moves the moving base 1 along the rack 17 in the axial direction to realize the step of the moving base 1;

[0065] Finally, when the moving base 1 is moved to a suitable position, the reciprocating steps can realize the step of the trolley.

[0066] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A step-moving robot trolley suitable for welding operation, characterized in that: it comprises a moving base (1); a moving frame (2) is arranged on the top of the moving base (1) and is slidably connected to the top surface of the moving base (1); a driving mechanism (3) is arranged on the top surface of the moving base (1) and is perpendicular to the moving frame (2) and is in gear connection with the moving frame (2); and welding assemblies (4) are arranged on the top surface of the moving base (1) and are uniformly distributed on the top surface of the moving base (1); first, second, third and fourth spiral elevators (5, 6, 7 and 8) are arranged at the four corners of the moving base (1), respectively; and fifth, sixth, seventh and eighth spiral elevators (9, 10, 11 and 12) are arranged at the four corners of the moving frame (2), respectively.

2. The step-moving robot trolley suitable for welding operation according to claim 1, characterized in that: the moving frame (2) has first and second long rods (13 and 14) which are parallel to each other and are spaced apart, and first and second short rods (15 and 16) are fixedly connected between the two ends of the first and second long rods (13 and 14), respectively; and a rack (17) is fixedly connected to the inner side of each of the first and second long rods (13 and 14), and the driving mechanism (3) is in gear connection with the rack (17).

3. The step-moving robot trolley suitable for welding operation according to claim 2, characterized in that: the driving mechanism (3) has a driving motor (18) which is fixedly connected to the top surface of the moving base (1) on the side surface.

4. The step-moving robot trolley suitable for welding operation according to claim 3, characterized in that: the output shaft of the driving motor (18) is in gear connection with a steering device (19), the steering device (19) has first and second couplings (20 and 21) on the two sides, respectively, the first coupling (20) has a first transmission rod (22) fixedly connected to the outer end, the second coupling (21) has a second transmission rod (23) fixedly connected to the outer end, the first transmission rod (22) has a first gear (24) on the end away from the first coupling (20), the first gear (24) is in gear connection with the rack (17) of the first long rod (13), and the second transmission rod (23) has a second gear on the end away from the second coupling (21), the second gear is in gear connection with the rack (17) of the second long rod (14).

5. The step-moving robot trolley suitable for welding operation according to claim 1, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ The first screw elevator (5), the second screw elevator (6), the third screw elevator (7), the fourth screw elevator (8), the fifth screw elevator (9), the sixth screw elevator (10), the seventh screw elevator (11) and the eighth screw elevator (12) are provided with a sleeve (25) which is bolted on the moving base (1) or the moving frame (2); The sleeve (25) is provided with a screw rod (26) which is rotatable through the moving base (1) or the moving frame (2), and one side of the sleeve (25) is provided with an adjusting motor (27) for controlling the lifting of the screw rod (26), and the output shaft of the adjusting motor (27) is drivingly connected to the screw rod (26) inside the sleeve (25).

6. The step-moving robot trolley suitable for welding operation according to claim 5, characterized in that: The bottom end of the screw rod (26) is provided with a base (28) which has a diameter larger than that of the screw rod (26) and is fixedly connected to the bottom end of the screw rod (26).

7. The step-moving robot trolley suitable for welding operation according to claim 5, characterized in that: The side surface of the sleeve (25) is provided with a plurality of reinforcing members (29) which are uniformly distributed along the circumferential direction of the sleeve (25).

8. The step-moving robot trolley suitable for welding operation according to claim 1, characterized in that: The welding assembly (4) is provided with a first electric control cabinet (30), and the two sides of the first electric control cabinet (30) are respectively provided with a first welding machine (31) and a second welding machine (32), the first electric control cabinet (30) is electrically connected to the first welding machine (31) and the second welding machine (32), the first welding machine (31) is connected with a first welding gun (33), and the second welding machine (32) is connected with a second welding gun (34); One side of the first welding gun (33) is provided with a first wire feeder (35), and the side away from the first welding gun (33) of the first wire feeder (35) is provided with a first wire reel (36), the bottom of the first wire feeder (35) and the first wire reel (36) is connected with a first bottom frame (37) with adjustable angle, the first bottom frame (37) is located on one side of the moving frame (2) and is fixedly connected to the moving base (1), and the welding wire on the first wire reel (36) is connected to the first welding gun (33) through the first wire feeder (35); One side of the second welding gun (34) is provided with a second wire feeder (38), and the second wire feeder (38) is provided with a second wire reel (39) away from one side of the second welding gun (34), and the bottom of the second wire feeder (38) and the second wire reel (39) is connected with an angle-adjustable second chassis (40), the second chassis (40) is located on the other side of the moving frame (2) and is fixedly connected on the moving base (1), and the welding wire on the second wire reel (39) is connected to the second welding gun (34) through the second wire feeder (38).

9. The step-moving robot trolley suitable for welding operation according to claim 8, characterized in that: The first welding gun (33) and the second welding gun (34) are provided with a first cooling water tank (41) and a second cooling water tank (42), the first cooling water tank (41) and the second cooling water tank (42) are fixedly connected on the moving base (1), the first cooling water tank (41) is connected with the first welding gun (33) through a pipeline, and the second cooling water tank (42) is connected with the second welding gun (34) through a pipeline.

10. The step-moving robot trolley suitable for welding operation according to claim 8, characterized in that: The first welding gun (33) is connected with a first robot (43), the second welding gun (34) is connected with a second robot (44), and the first robot (43) and the second robot (44) are located on both sides of the moving frame (2) and are fixedly connected on the moving base (1).

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