Wheeled, height-adjustable welding robot

Abstract

A wheeled, height-adjustable welding robot, characterized in that it comprises: a wheeled chassis comprising a traveling frame and a wheel assembly disposed at the bottom of the traveling frame and rotatably connected to the traveling frame; a support arrangement arranged below the chassis and telescopically connected thereto for exerting a supporting force on the wheeled chassis when it is stationary; a height-adjustable welding robot assembly comprising a lifting mechanism fixedly connected to the upper end surface of the traveling frame, a robot lifting platform vertically displaceably connected to the lifting mechanism, and a welding robot assembly fixedly arranged above the robot lifting platform; a welding power supply arrangement arranged above the traveling frame.

Description

TECHNICAL FIELD

[0001] The present utility model relates to the technical field of automated welding technologies, in particular to a wheeled, height-adjustable welding robot. STATE OF THE ART

[0002] Most existing welding robots are mounted on either a fixed base or a steel rail base. A robot with a fixed base is immobile, whereas a steel rail base can only move within a defined area of ​​steel rails. Therefore, workpieces to be welded must be positioned within a limited area accessible to the welding robot. The disadvantage of an existing welding robot mounted on a fixed base or a movable steel rail base is that it has a small working envelope. To ensure successful welding, additional mechanical support devices are required, including for transporting, positioning, and changing the position of workpieces. If the shape or structure of the workpieces to be welded differs significantly, the above devices must be adapted accordingly.These adjustments and settings are time-consuming and costly and even involve the risk of downtime. CONTENT OF THE PRESENT UTILITY MODEL

[0003] The object of the present utility model is to overcome the disadvantages of the prior art by providing a wheeled, height-adjustable welding robot comprising the following: a wheeled chassis comprising a traveling frame and a wheel assembly disposed at the bottom of the traveling frame and rotatably connected to the traveling frame; a support arrangement arranged below the chassis and telescopically connected thereto for exerting a supporting force on the wheeled chassis when it is stationary; a height-adjustable welding robot assembly comprising a lifting mechanism fixedly connected to the upper end surface of the traveling frame, a robot lifting platform vertically displaceably connected to the lifting mechanism, and a welding robot assembly fixedly arranged above the robot lifting platform; a welding power supply arrangement arranged above the traveling frame.

[0004] It is further provided that the support arrangement comprises a mounting bracket fixedly connected to the floor of the chassis, a support substructure arranged below the mounting bracket and slidably connected thereto, and an electric lifting rod mounted in the mounting bracket; wherein a drive end of the electric lifting rod is fixedly connected to a cover plate of the mounting bracket, while a telescopic end of the electric lifting rod is fixedly connected to a base plate of the support base; wherein outer walls of the two side plates of the mounting bracket are each provided with a guide projection and inner walls of the two side plates of the support substructure are each provided with a guide groove which cooperates with the respective guide projection, wherein the drive end of the electric lifting rod drives the telescopic end to extend and retract, in order to thereby extend or retract the support substructure along the guide projections.

[0005] It is further provided that the lifting mechanism comprises a lifting frame which is firmly connected to the traveling frame and a lifting motor, a lifting spindle and a lifting guide which are arranged on one and the same side wall of the lifting frame; wherein the lifting motor is arranged at the uppermost region of the side wall of the lifting frame, wherein one end of the lifting spindle is fixedly connected to the drive end of the lifting motor and the other end is rotatably connected to the bottom of the lifting frame, and wherein the lifting guide is provided in a number of two and the two lifting guides are arranged symmetrically at both ends of the side wall of the lifting frame.

[0006] Furthermore, it is provided that the robot lifting platform is provided with a lifting groove at each of its ends on the side connected to the lifting mechanism, which is matched to the respective lifting guide, wherein a nut arrangement is provided centrally on the side of the robot lifting platform connected to the lifting mechanism, the inner cavity of which nut arrangement is provided with an internal thread that is matched to an external thread of the lifting spindle.

[0007] It is further provided that two wheel assemblies are mounted on the traveling frame, which are arranged symmetrically on the floor of the area of ​​the height-adjustable welding robot assembly, wherein a wheel assembly is mounted on the traveling frame, which is arranged centrally on the floor of the area of ​​the power supply assembly, wherein a support assembly is provided on each of the two symmetrically arranged wheel assemblies, while a support assembly is provided on a side of the individually arranged wheel assembly facing away from the height-adjustable welding robot assembly.

[0008] Furthermore, it is planned that a gun cleaner is permanently mounted on the side of the robot lifting platform.

[0009] Furthermore, it is provided that a gas bottle holder is provided at a position corresponding to the lifting mechanism on a side wall of the chassis.

[0010] It is further provided that the welding robot assembly comprises a robot body and a visual assembly and a welding gun arranged at one end of the robot body.

[0011] Compared to the state of the art, the present utility model is characterized by the following advantageous effects: 1. The wheeled, height-adjustable welding robot according to the present utility model integrates a movable wheeled chassis, a height-adjustable welding robot assembly provided on the wheeled chassis, and a welding power supply assembly that can supply power to the height-adjustable welding robot assembly. The wheeled chassis enables the height-adjustable welding robot assembly to be driven to move freely to a desired welding area. After reaching a target position, individual support assemblies can be extended to support the wheeled chassis, ensuring both freedom of movement and stability during the welding process. 2. In the wheeled, height-adjustable welding robot according to the present utility model, the height-adjustable welding robot assembly comprises a lifting mechanism, a robot lifting platform connected vertically to the lifting mechanism, and a welding robot assembly fixedly mounted above the robot lifting platform. For a target object to be welded at a higher height, the welding robot assembly can be raised on the lifting platform by the lifting mechanism, thus increasing welding flexibility. SHORT DESCRIPTION OF THE DRAWING

[0012] From the detailed description of the following preferred embodiments, various other advantages will become clearer and more understandable to those of ordinary skill in the art. The accompanying drawings serve to better understand the present utility model and constitute an integral part of the description. Together with the exemplary embodiment of the present utility model, they serve to explain the present utility model without limiting the present utility model. Fig. 1 is a schematic structural view of a wheeled, height-adjustable welding robot according to the present utility model; Fig. 2 is a schematic structural view of a support arrangement of a wheeled, height-adjustable welding robot according to the present utility model; Fig. 3 is a schematic structural view of a lifting mechanism of a wheeled, height-adjustable welding robot according to the present utility model; Fig. 4 is a schematic representation of a wheeled, height-adjustable welding robot according to the present utility model during welding work in a low position, wherein (a) shows a representation of normal operation and (b) shows a representation of further operation after conversion of the work station; Fig. 5 is a schematic representation of a wheeled, height-adjustable welding robot according to the present utility model during welding work in a high position, wherein (a) shows a representation of normal operation and (b) shows a representation of further operation after conversion of the work station. Reference symbol

[0013] 1: Wheeled chassis; 11: Chassis; 12: Wheel arrangement; 2: Support arrangement; 21: Mounting bracket; 22: Support base; 23: Electric lifting rod; 3: height-adjustable welding robot arrangement; 31: Lifting mechanism; 32: Robot lifting platform; 33: Welding robot assembly; 311: Lifting frame; 312: Lifting motor; 313: Lifting spindle; 314: Lifting guide; 331: Robot body; 332: Visual layout; 333: Welding gun; 4: Welding power supply arrangement; 5: Gun cleaner; 6: Gas bottle holder. DETAILED DESCRIPTION

[0014] For a better understanding of the problem, the technical solution, and the advantages of the present utility model, the present utility model will be discussed in more detail below with reference to the attached drawings and the specific embodiments. Naturally, the specific embodiments described herein serve only to explain the present utility model without limiting it.

[0015] To simplify the drawings, only those parts related to the present utility model are schematically depicted in the respective drawings, which should not be considered the actual structure of the product. Furthermore, in some drawings, for the sake of clarity and better understanding, only one of the parts with the same structure or function is schematically depicted or provided with reference symbols. "One" does not mean "only one"; rather, "more than one" is conceivable. First embodiment

[0016] It will be Fig. 1 to 5. The technical solution for a wheeled, height-adjustable welding robot according to the present embodiment comprises: a wheeled chassis 1 comprising a traveling frame 11 and a wheel assembly 12 arranged on the bottom of the traveling frame 11 and rotatably connected to the traveling frame 11; a support arrangement 2 arranged below the chassis 11 and telescopically connected to the chassis 11 in order to exert a supporting force on the wheeled chassis 1 when it is stationary; a height-adjustable welding robot assembly 3 comprising a lifting mechanism 31 fixedly connected to the upper end surface of the traveling frame 11, a robot lifting platform 32 vertically displaceably connected to the lifting mechanism 31, and a welding robot assembly 33 fixedly arranged above the robot lifting platform 32; a welding power supply arrangement 4, which is arranged above the traveling frame 11.

[0017] In the concrete implementation, as in Fig. 1, in which the lowest element represents the wheeled chassis 1, the welding power supply assembly 4 is fixedly arranged on the left side above the wheeled chassis 1. The lifting mechanism 31 is fixedly arranged in the middle. On the right side in the lower area is the robot lifting platform 32, which is slidably connected to the lifting mechanism 31. The welding robot assembly 33 is fixedly arranged above the robot lifting platform 32. Two wheel assemblies 12 are mounted on the traveling frame 11 in the wheeled chassis 1, which are arranged symmetrically on the floor of the area of ​​the height-adjustable welding robot assembly 3. One wheel assembly 12 is mounted on the traveling frame 11 and is arranged centrally on the floor of the area of ​​the power supply assembly.A support arrangement 2 is provided on each side of the two symmetrically arranged wheel arrangements 12, while a support arrangement 2 is provided on a side of the individually arranged wheel arrangement 12 facing away from the height-adjustable welding robot arrangement 3.

[0018] In detail, the support arrangement 2 comprises a mounting bracket 21 fixedly connected to the floor of the chassis 11, a support base 22 arranged below the mounting bracket 21 and slidably connected to the mounting bracket 21, and an electric lifting rod 23 mounted in the mounting bracket 21.

[0019] A drive end of the electric lifting rod 23 is fixedly connected to a cover plate of the mounting bracket 21, while a telescopic end of the electric lifting rod 23 is fixedly connected to a base plate of the support base 22.

[0020] The outer walls of the two side plates of the mounting bracket 21 are each provided with a guide projection, and the inner walls of the two side plates of the support base 22 are each provided with a guide groove that interacts with the respective guide projection. The drive end of the electric lifting rod 23 drives the telescopic end to extend and retract, thereby extending or retracting the support base 22 along the guide projections.

[0021] In detail, the lifting mechanism 31 comprises a lifting frame 311 which is firmly connected to the traveling frame 11, as well as a lifting motor 312, a lifting spindle 313 and a lifting guide 314 which are arranged on one and the same side wall of the lifting frame 311.

[0022] The lifting motor 312 is arranged at the uppermost portion of the side wall of the lifting frame 311. One end of the lifting spindle 313 is fixedly connected to the drive end of the lifting motor 312, and the other end is rotatably connected to the bottom of the lifting frame 311. The lifting guide 314 is provided in two pieces, and the two lifting guides 314 are arranged symmetrically at both ends of the side wall of the lifting frame 311.

[0023] In detail, the robot lifting platform 32 is provided with a lifting groove at each end of its side connected to the lifting mechanism 31, which is matched to the respective lifting guide 314. Centrally located on the side of the robot lifting platform 32 connected to the lifting mechanism 31 is a nut assembly (this can be understood as a fastening and connecting hub, in the center of which an opening with an internal thread is provided), the inner cavity of which is provided with an internal thread that is matched to an external thread of the lifting spindle 313.

[0024] In the specific implementation, when the welding robot assembly 33 is to be raised or lowered, the lifting motor 312 is set into forward or reverse rotation. The lifting motor 312 drives the lifting spindle 313 to rotate forward or reverse. The nut assembly on the robot lifting platform 32 engages the lifting spindle 313 via threads, thereby moving the welding robot assembly 33 up or down on the robot lifting platform 32.

[0025] Specifically, a gun cleaner 5 is permanently mounted on the side of the robot lifting platform 32.

[0026] Specifically, a gas bottle holder 6 is provided at a position corresponding to the lifting mechanism 31 on a side wall of the chassis 11.

[0027] In the concrete implementation, the welding power supply arrangement 4 comprises, among other things, a welding power supply for the welding process and a movable power supply for the operation of the lifting mechanism 31.

[0028] In detail, the welding robot assembly 33 includes a robot body 331, a vision assembly 332, and a welding gun 333 arranged at one end of the robot body 331. The structure of the welding robot assembly 33 is already well-developed in the prior art. The essential subject matter of the present application relates to the movable wheeled chassis 1, the lifting mechanism 31 arranged on the chassis 1, which can displace the welding robot assembly 33 upward and downward, and the support structure for supporting the wheeled chassis 1. Therefore, a detailed description of the already known structure of the welding robot assembly 33 is omitted.

[0029] Functional principle or operating procedure of the wheeled, height-adjustable welding robot according to the present utility model: As in Fig. As shown in Figure 4, when welding a workpiece in a low position, the wheel assemblies 12 are driven, whereby the height-adjustable welding robot assembly 3 is moved by the wheel assemblies 12 to the workpiece position, and the support assemblies 2 are lowered. The visual assembly 332 detects the weld seam position of the workpiece and transmits it to the robot body 331, which guides the welding gun 333 for welding. For large-sized workpieces, multiple welding operations can be performed by reconfiguring the workstation. As in Fig.As shown in Figure 5, when welding a workpiece in a high position, the wheel assemblies 12 are driven, whereby the height-adjustable welding robot assembly 3 is moved by the wheel assemblies 12 to the workpiece position, and the support assemblies 2 are lowered. The visual assembly 332 detects the weld seam position of the workpiece and transmits it to the robot body 331, which guides the welding gun 333 for welding. For tall workpieces, the lifting mechanism 31 drives the robot lifting platform 32 to adjust the height of the welding robot assembly 33 for welding at a high position. For large-sized workpieces, multiple welding operations at high positions can be performed by reconfiguring the workstation.

[0030] Finally, it should be noted that only a preferred embodiment of the present utility model has been explained so far, which in no way serves to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiment, it will be understood by those skilled in the art that modifications to the technical solutions described in the previous embodiment or equivalent replacements of some of the technical features contained therein are possible. Any modifications, equivalent substitutions, and improvements within the spirit and principles of the present utility model are intended to be included within the scope of protection of the present utility model. SUMMARY

[0031] The present utility model relates to the technical field of automated welding technologies, in particular to a wheeled, height-adjustable welding robot. It comprises a wheeled chassis including a traveling frame and a wheel assembly arranged at the bottom of the traveling frame and rotatably connected to the traveling frame; a support assembly arranged below the traveling frame and telescopically connected to it; a height-adjustable welding robot assembly including a lifting mechanism fixedly connected to the upper end surface of the traveling frame, a robot lifting platform vertically displaceably connected to the lifting mechanism, and a welding robot assembly fixedly arranged above the robot lifting platform; and a welding power supply assembly.The present utility model integrates a movable wheeled chassis, a height-adjustable welding robot assembly provided on the wheeled chassis, and a welding power supply assembly that can supply power to the height-adjustable welding robot assembly. Thus, the wheeled chassis enables the height-adjustable welding robot assembly to move freely to a desired welding area. After reaching a target position, individual support assemblies can be extended to support the wheeled chassis.

Claims

[1] Wheeled, height-adjustable welding robot, characterized by that it includes: a wheeled chassis comprising a traveling frame and a wheel assembly disposed at the bottom of the traveling frame and rotatably connected to the traveling frame; a support arrangement arranged below the chassis and telescopically connected thereto for exerting a supporting force on the wheeled chassis when it is stationary; a height-adjustable welding robot assembly comprising a lifting mechanism fixedly connected to the upper end surface of the traveling frame, a robot lifting platform vertically displaceably connected to the lifting mechanism, and a welding robot assembly fixedly arranged above the robot lifting platform; a welding power supply arrangement arranged above the traveling frame. [2] Wheeled, height-adjustable welding robot according to claim 1, characterized bythat the support arrangement comprises a mounting bracket fixedly connected to the floor of the chassis, a support substructure arranged below the mounting bracket and slidably connected thereto, and an electric lifting rod mounted in the mounting bracket; wherein a drive end of the electric lifting rod is fixedly connected to a cover plate of the mounting bracket, while a telescopic end of the electric lifting rod is fixedly connected to a base plate of the support base; wherein outer walls of the two side plates of the mounting bracket are each provided with a guide projection and inner walls of the two side plates of the support substructure are each provided with a guide groove which cooperates with the respective guide projection, wherein the drive end of the electric lifting rod drives the telescopic end to extend and retract, in order to thereby extend or retract the support substructure along the guide projections. [3] Wheeled, height-adjustable welding robot according to claim 1, characterized by that the lifting mechanism comprises a lifting frame which is fixedly connected to the traveling frame, and a lifting motor, a lifting spindle and a lifting guide which are arranged on one and the same side wall of the lifting frame; wherein the lifting motor is arranged at the uppermost region of the side wall of the lifting frame, wherein one end of the lifting spindle is fixedly connected to the drive end of the lifting motor and the other end is rotatably connected to the bottom of the lifting frame, and wherein the lifting guide is provided in a number of two and the two lifting guides are arranged symmetrically at both ends of the side wall of the lifting frame. [4] Wheeled, height-adjustable welding robot according to claim 3, characterized bythat the robot lifting platform is provided at both ends of its side connected to the lifting mechanism with a lifting groove which is matched to the respective lifting guide, wherein a nut arrangement is provided centrally on the side of the robot lifting platform connected to the lifting mechanism, the inner cavity of which nut arrangement is provided with an internal thread which is matched to an external thread of the lifting spindle. [5] Wheeled, height-adjustable welding robot according to claim 1, characterized byin that two wheel assemblies are mounted on the traveling frame, which are arranged symmetrically on the floor of the area of ​​the height-adjustable welding robot assembly, wherein a wheel assembly is mounted on the traveling frame, which is arranged centrally on the floor of the area of ​​the power supply assembly, wherein a support assembly is provided on each of the two symmetrically arranged wheel assemblies, while a support assembly is provided on a side of the individually arranged wheel assembly facing away from the height-adjustable welding robot assembly. [6] Wheeled, height-adjustable welding robot according to claim 1, characterized by that a gun cleaner is permanently mounted on the side of the robot lifting platform. [7] Wheeled, height-adjustable welding robot according to claim 1, characterized bythat a gas bottle holder is provided on a side wall of the chassis at a position corresponding to the lifting mechanism. [8] Wheeled, height-adjustable welding robot according to claim 1, characterized by that the welding robot assembly comprises a robot body and a visual assembly and a welding gun arranged at one end of the robot body.

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