A welding robot for construction sites

Abstract

The present invention provides a welding robot for construction sites, comprising: a driving trolley, a mechanical arm, an assembly frame, a rotating device, a welding component, a switching device and a cleaning component; the mechanical arm is installed on the driving trolley, the assembly frame is installed on the final arm of the mechanical arm, the rotating device is installed on the assembly frame, and the cleaning component includes a descaling device and a grinding device, the descaling device and the grinding device are vertically arranged, and when cleaning the welding workpiece, the cleaning component can be detachably installed on the assembly frame. The welding robot for construction sites provided by the present invention is assembled with the cleaning component or the welding component through the mechanical arm, respectively, and can automatically perform cleaning work such as degreasing, rust and oxide layer on the welded parts in turn, and drive the welding component to realize automatic welding, so that the staff does not need to use different cleaning tools to clean in turn, simplifying the cleaning work.

Description

Technical Field

[0001] The invention relates to the field of welding robots, and in particular to a welding robot used in construction sites. Background Art

[0002] A welding robot is an industrial robot that can automatically complete welding tasks. It usually includes a robotic arm and welding parts. It can accurately control welding tools to perform welding operations on workpieces according to pre-set programs and paths.

[0003] Welding robots are widely used in many industries, including the construction industry. In the construction industry, welding robots are used to weld steel beams, pipes, etc. When welding steel beams or pipes, in order to ensure the quality of welding, the surface of the welded parts must be cleaned first, including cleaning the dust, oil, rust, oxide scale, etc. on the surface of the welded parts; In the prior art, when cleaning welds, workers are usually required to use different cleaning tools to clean the welds, such as using organic solvents and brushes to clean oil stains on the surface of the welds, and using sandpaper or grinding tools to clean rust and oxide scale on the surface of the welds. It is troublesome to use different cleaning tools to perform corresponding cleaning operations on the surface of the welds. There is still room for improvement in how to combine the cleaning components for the surface of the welds with the robotic arms of the welding robots.

[0004] Therefore, it is necessary to provide a kind of welding robot for construction site to solve the above-mentioned technical problems. Summary of the invention

[0005] The present invention provides a welding robot for a construction site, which solves the problem that when cleaning a welded part, workers usually need to use different cleaning tools to clean the welded part, which makes the cleaning operation troublesome.

[0006] In order to solve the above technical problems, the present invention provides a welding robot for construction sites, comprising: a driving trolley, a mechanical arm, an assembly frame, a rotating device, a welding assembly, a switching device and a cleaning assembly; The mechanical arm is mounted on the driving trolley, the assembly frame is mounted on the final arm of the mechanical arm, and the rotating device is mounted on the assembly frame; The cleaning assembly comprises a descaling device and a polishing device, wherein the descaling device and the polishing device are arranged vertically; When cleaning the welding workpiece, the cleaning assembly is disassembled, and the cleaning assembly is detachably mounted on the assembly frame. The switching device is used to drive the cleaning assembly to rotate, so that the input end of the descaling device and the input end of the grinding device are detachably connected to the output end of the rotating device in sequence; When welding the welding workpiece, the welding assembly is detachably mounted on the assembly frame, and the welding assembly is detachably connected to the output end of the rotating device.

[0007] Preferably, the welding assembly includes a welding gun, a mounting frame, a rotating seat and a first assembly block, the welding gun is installed on the mounting frame, the rotating seat is installed on the mounting frame, the first assembly block is installed on the top of the mounting frame, the first assembly block is detachably connected to the output end of the rotating device, and the rotating seat is detachably connected to the assembly frame.

[0008] Preferably, the scale cleaning device comprises a liquid storage barrel, cleaning sponges and a valve member, a liquid outlet is provided at the bottom of the liquid storage barrel, one end of the cleaning sponge is installed in the liquid outlet, the valve member comprises a valve plate, an assembly pipe, a second assembly block and a valve stem, the valve plate is arranged inside the liquid storage barrel and blocks the liquid outlet, the assembly pipe is installed through the top of the liquid storage barrel, the bottom end of the valve stem is connected to the valve plate, the top end of the valve stem is inserted through the assembly pipe and is threadedly connected to the assembly pipe, and the second assembly block is installed on the top end of the valve stem; When the scale cleaning device is in use, the second assembly block is detachably connected to the output end of the rotating device, and the liquid storage barrel is detachably connected to the assembly frame via an assembly component.

[0009] Preferably, the grinding device comprises a mounting tube, a driving shaft, a grinding disc and a third assembly block, wherein the mounting tube is installed through the liquid storage barrel and is vertically arranged with the liquid outlet, the driving shaft passes through the mounting tube and is rotatably connected with the mounting tube, the grinding disc is installed at one end of the driving shaft, and the third assembly block is installed at the other end of the driving shaft; The valve stem comprises a rotating shaft and an inverted U-shaped frame, wherein the inverted U-shaped frame is sleeved on the mounting tube and connected to the valve plate, the bottom end of the rotating shaft is rotatably mounted on the top of the inverted U-shaped frame, the top end of the rotating shaft is threadedly connected to the assembly tube, and the second assembly block is mounted on the top end of the rotating shaft; When the grinding device is in use, the third assembly block is detachably connected to the output end of the rotating device.

[0010] Preferably, the rotating device comprises a rotating motor and an inverted U-shaped frame, the rotating motor is mounted on the assembly frame, and the inverted U-shaped frame is mounted at the output end of the rotating motor.

[0011] Preferably, the switching device comprises a driving motor and a threaded shaft, the driving motor is mounted on the side of the assembly frame, the driving motor is vertically arranged with the rotating motor, and the threaded shaft is mounted at the output end of the driving motor; The assembly assembly includes a second threaded tube, a branch tube, a support plate and a positioning pin, wherein the second threaded tube is installed at the end of the liquid storage barrel, the branch tube is installed at the end of the liquid storage barrel and sleeved on the outside of the second threaded tube, the support plate is installed inside the branch tube, the positioning pin passes through the support plate and is threadedly connected to the support plate, and an assembly hole is opened on the second threaded tube corresponding to the positioning pin; A limiting hole is provided on the threaded shaft, a positioning tube is installed on the side of the assembly frame and outside the threaded shaft, the inner diameter of the positioning tube is the same as the outer diameter of the branch tube, and notches are provided on the branch tube and the positioning tube.

[0012] Preferably, the welding assembly further comprises a first threaded tube, and the first threaded tube is mounted on the rotating seat.

[0013] Preferably, a positioning hole is provided on the assembly frame, a limiting rod is installed on the rotating seat, and the limiting rod is arranged adjacent to the first threaded tube.

[0014] Preferably, the cleaning assembly further comprises a flushing assembly, and the flushing assembly is mounted on the liquid storage barrel.

[0015] Preferably, a stop device is installed at the bottom of the driving trolley.

[0016] Compared with the related art, the welding robot for construction sites provided by the present invention has the following beneficial effects: The present invention provides a welding robot for a construction site. During welding, the weldment is first cleaned, and a cleaning component is installed on an assembly rack. When there is oil stain on the surface of the weldment, an input end of a descaling device in the cleaning component is assembled with an output end of a rotating device. A mechanical arm drives the cleaning component to move to a position to be cleaned, and the rotating device is operated to make an organic solvent in the descaling device flow into a cleaning part. The mechanical arm can drive the cleaning component to make the cleaning part of the descaling device reciprocate and wipe the part to be cleaned of the weldment, and the oil stain is wiped off by the organic solvent. Subsequently, the organic solvent is rinsed clean by clean water. When there is rust, scale, etc. on the surface of the weldment, the switching device drives the cleaning component to rotate, switches the positions of the descaling device and the grinding device, and assembles the input end of the grinding device with the output end of the rotating device. When removing rust, the rotating device works to drive the grinding part of the grinding device to work, and at the same time, the mechanical arm drives the grinding device to move back and forth to grind the part to be polished to remove rust, scale, etc.; after the cleaning is completed, the cleaning component is removed, the welding component is installed on the assembly frame, and the welding component is assembled with the output end of the rotating device, and the mechanical arm drives the welding component to perform welding processing on the weldment; Thus, by assembling the robotic arm with the cleaning component or the welding component respectively, the welding parts can be automatically cleaned of oil, rust and oxide layer in turn, and the welding component can be driven to realize automatic welding, so that the staff does not need to use different cleaning tools to clean in turn, thereby simplifying the cleaning work. The rotating device can be used to drive the cleaning device and the grinding device, and the angle of the welding component can be adjusted as needed, without the need to set up corresponding driving equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a welding robot for a construction site provided by the present invention; Figure 2 for Figure 1 The structural schematic diagram of the welding robot for construction sites from another perspective is shown; Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown; Figure 4 A schematic diagram of the structure of the cleaning component provided by the present invention; Figure 5 for Figure 4 The cross-sectional view along AA is shown; Figure 6 A schematic diagram of the assembly of the liquid storage barrel, the assembly frame and the rotating device provided by the present invention; Figure 7 A schematic diagram of the structure of a welding assembly provided by the present invention; Figure 8 A schematic diagram of the structure of the rotating device, the assembly frame and the switching device provided by the present invention; Fig. 9 The schematic diagram of the working principle of the scale removal device provided by the present invention is as follows: Fig. 9 (a) is a schematic diagram of the assembly of the second assembly block and the inverted U-shaped frame. Fig. 9 (b) is a schematic diagram of the rotating device driving the second assembly block to rotate so as to lift the valve plate; Fig.10 The schematic diagram of the working principle of the grinding device provided by the present invention is as follows: Fig.10 (a) is a schematic diagram of the assembly of the third assembly block and the inverted U-shaped frame. Fig.10 (b) is a schematic diagram of the rotating device driving the third assembly block to rotate the grinding disc.

[0018] Numbers in the figure: 1. Driving trolley; 101. Stopping device; 2. Robotic arm; 21. Final arm; 3. Assembly frame; 31. Positioning tube; 32. Positioning hole; 4. Rotating device; 41. Rotating motor; 42. Inverted U-shaped frame; 5. welding assembly; 51. welding gun; 52. mounting frame; 53. rotating seat; 54. first assembly block; 55. first threaded tube; 531. limiting rod; 6. Switching device; 61. Driving motor; 62. Threaded shaft; 621. Limiting hole; 7. Descaling device; 71. Liquid storage barrel; 72. Cleaning sponge; 73. Valve; 74. Liquid filling pipe; 731, valve plate; 732, assembly pipe; 733, second assembly block; 734, rotating shaft; 735, inverted U-shaped frame; 8. grinding device; 81. mounting tube; 82. driving shaft; 83. grinding disc; 84. third assembly block; 9. Assembly component; 91. Second threaded tube; 92. Branch tube; 93. Support plate; 94. Positioning pin; 911. Assembly hole; 10. Rinse components. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The invention provides a welding robot for a construction site.

[0021] Please refer to Figures 1 to 4 , In one embodiment of the present invention, the welding robot for construction sites comprises: a driving trolley 1, a mechanical arm 2, an assembly frame 3, a rotating device 4, a welding component 5, a switching device 6 and a cleaning component; The mechanical arm 2 is installed on the driving trolley 1, the assembly frame 3 is installed on the final arm 21 of the mechanical arm 2, and the rotating device 4 is installed on the assembly frame 3; The cleaning assembly includes a descaling device 7 and a polishing device 8, and the descaling device 7 and the polishing device 8 are vertically arranged; When cleaning the welding workpiece, the cleaning assembly is detachably mounted on the assembly frame 3, and the switching device 6 is used to drive the cleaning assembly to rotate, so that the input end of the descaling device 7 and the input end of the grinding device 8 are detachably connected to the output end of the rotating device 4 in sequence; When welding the welding workpiece, the cleaning assembly is disassembled, and the welding assembly 5 is detachably mounted on the assembly frame 3 , and the welding assembly 5 is detachably connected to the output end of the rotating device 4 .

[0022] In this embodiment, the cleaning device 7 stores an organic solvent that is convenient for removing oil stains, such as kerosene, acetone, etc. When the rotating device 4 drives the input end of the cleaning device 7 to rotate, the liquid outlet of the cleaning device 7 opens, and the organic solvent flows into the cleaning part of the cleaning device 7 through the liquid outlet; When the rotating device 4 drives the input end of the grinding device 8 to rotate, the grinding part can be driven to perform grinding work; When the rotating device 4 is assembled with the welding assembly 5, the welding angle of the welding gun 51 in the welding assembly 5 can be adjusted according to the welding requirements, and the welding method can also be adjusted, such as the moving and rotating welding method, in which the robotic arm 2 drives the welding gun 51 to move horizontally, and the rotating device 4 simultaneously drives the welding assembly 5 to rotate for welding.

[0023] When welding steel beams, pipes and other welded parts, the trolley 1 is driven to move to the welding position, which is located on one side of the welded part; During welding, the weldment is first cleaned, and the cleaning assembly is installed on the assembly frame 3. When there is oil stain on the surface of the weldment, the input end of the descaling device 7 in the cleaning assembly is assembled with the output end of the rotating device 4, and the robot arm 2 drives the cleaning assembly to move to the position to be cleaned. The rotating device 4 works to make the organic solvent in the descaling device 7 flow into the cleaning part. The robot arm 2 can drive the cleaning assembly to make the cleaning part of the descaling device 7 reciprocate and wipe the part to be cleaned of the weldment, and the oil stain is wiped off by the organic solvent, and then the organic solvent is rinsed clean by clean water; When there is rust, scale, etc. on the surface of the weldment, the switching device 6 drives the cleaning assembly to rotate, switches the positions of the descaling device 7 and the grinding device 8, and assembles the input end of the grinding device 8 with the output end of the rotating device 4. When removing rust, scale, etc., the rotating device 4 works to drive the grinding part of the grinding device 8 to work, and at the same time, the robot arm 2 drives the grinding device 8 to move back and forth to grind the part to be polished to remove rust, scale, etc.; After cleaning is completed, the cleaning assembly is removed, the welding assembly 5 is installed on the assembly frame 3, and the welding assembly 5 is assembled on the output end of the rotating device 4, and the robot arm 2 drives the welding assembly 5 to perform welding processing on the welded part; Thus, by assembling and using the robot arm 2 with the cleaning component or the welding component 5 respectively, it is possible to automatically remove oil, rust and oxide layers from the welded parts in turn, and drive the welding component 5 to achieve automatic welding, thereby eliminating the need for workers to use different cleaning tools to perform cleaning in turn, thereby simplifying the cleaning work. The rotating device 4 can be used to drive the cleaning device 7 and the grinding device 8, and to adjust the angle of the welding component 5 as needed, without the need to set up corresponding driving equipment.

[0024] See also Figure 3 In this embodiment, the welding assembly 5 includes a welding gun 51, a mounting frame 52, a rotating seat 53 and a first assembly block 54. The welding gun 51 is installed on the mounting frame 52, the rotating seat 53 is sleeved on the mounting frame 52, and the first assembly block 54 is installed on the top of the mounting frame 52. The first assembly block 54 is detachably connected to the output end of the rotating device 4, and the rotating seat 53 is detachably connected to the assembly frame 3.

[0025] When in use, the robot arm 2 drives the assembly frame 3 to move, and the assembly frame 3 drives the mounting frame 52 to follow the movement through the rotating seat 53, and the mounting frame 52 drives the welding gun 51 to follow the movement to achieve welding work; By providing the rotating seat 53 , when the rotating device 4 drives the mounting frame 52 to drive the welding gun 51 to rotate, the mounting frame 52 and the welding gun 51 can rotate relative to the assembly frame 3 through the rotating seat 53 , so that the assembly frame 3 will not block the rotating device 4 from rotating and adjusting the welding gun 51 .

[0026] The rotating seat 53 is a bearing seat, etc., and the mounting frame 52 is installed on the inner wall of the inner ring of the bearing seat; by assembling the rotating seat 53 with the assembly frame 3, the stability of the installation of the welding component 5 is further guaranteed, and the subsequent cooperation with the switching device 6 can realize automatic assembly, which is convenient and quick to assemble.

[0027] In other embodiments, the welding assembly 5 may also only include a welding gun 51, a mounting frame 52 and a first assembly block 54; wherein the welding gun 51 is mounted on the mounting frame 52, the first assembly block 54 is mounted on the top of the mounting frame 52, and the first assembly block 54 is detachably connected to the output end of the rotating device 4 by bolts or clamping.

[0028] See also Figure 4In this embodiment, the scale cleaning device 7 includes a liquid storage barrel 71, a cleaning sponge 72 and a valve member 73. A liquid outlet is provided at the bottom of the liquid storage barrel 71, one end of the cleaning sponge 72 is installed in the liquid outlet, and the valve member 73 includes a valve plate 731, an assembly pipe 732, a second assembly block 733 and a valve stem. The valve plate 731 is arranged inside the liquid storage barrel 71 and blocks the liquid outlet. The assembly pipe 732 is installed through the top of the liquid storage barrel 71. The bottom end of the valve stem is connected to the valve plate 731. The top end of the valve stem passes through the assembly pipe 732 and is threadedly connected to the assembly pipe 732. The second assembly block 733 is installed at the top of the valve stem. When the descaling device 7 is in use, the second assembly block 733 is detachably connected to the output end of the rotating device 4 , and the liquid storage barrel 71 is detachably connected to the assembly frame 3 via the assembly component 9 .

[0029] When the cleaning device 7 is used to clean the oil stains on the surface of the weldment, the rotating device 4 drives the second assembly block 733 to rotate, and the second assembly block 733 drives the valve stem to rotate. The valve stem and the assembly pipe 732 act on the thread, driving the valve plate 731 to move upward. Fig. 9 (a) and Fig. 9 In (b), the valve plate 731 is separated from the inner wall of the liquid storage barrel 71, and the organic solvent inside the liquid storage barrel 71 contacts the cleaning sponge 72 through the liquid outlet. The cleaning sponge 72 absorbs the organic solvent, and then the robot arm 2 drives the cleaning component to reciprocate and wipe the clean part of the weldment to remove oil stains.

[0030] One end of the liquid storage barrel 71 is connected to a liquid replenishing tube 74 , and a sealing cap is threadedly connected to the liquid replenishing tube 74 . The organic solvent can be replenished into the liquid storage barrel 71 by removing the sealing cap.

[0031] In other embodiments, the cleaning device 7 can also replace the cleaning sponge 72 with a cleaning brush, etc. The cleaning brush is installed at the liquid outlet of the liquid storage barrel 71, and the brush handle of the cleaning brush is provided with a water permeable hole. When the valve plate 731 is opened, the organic solvent flows into the bristles and the parts to be cleaned of the weldment through the water permeable holes on the brush handle.

[0032] See also Figure 4 , Fig. 9 and Fig.10 In this embodiment, the grinding device 8 includes a mounting tube 81, a driving shaft 82, a grinding disc 83 and a third assembly block 84. The mounting tube 81 is installed on the liquid storage barrel 71 and is vertically arranged with the liquid outlet. The driving shaft 82 passes through the mounting tube 81 and is rotatably connected with the mounting tube 81. The grinding disc 83 is installed at one end of the driving shaft 82, and the third assembly block 84 is installed at the other end of the driving shaft 82. The valve stem includes a rotating shaft 734 and an inverted U-shaped frame 735. The inverted U-shaped frame 735 is sleeved on the mounting tube 81 and connected to the valve plate 731. The bottom end of the rotating shaft 734 is rotatably mounted on the top of the inverted U-shaped frame 735. The top end of the rotating shaft 734 is threadedly connected to the assembly tube 732. The second assembly block 733 is mounted on the top end of the rotating shaft 734. When the grinding device 8 is in use, the third assembly block 84 is detachably connected to the output end of the rotating device 4 .

[0033] During grinding, the rotating device 4 drives the shaft 82 to rotate through the third assembly block 84, and the shaft 82 drives the grinding disc 83 to rotate. The robotic arm 2 drives the grinding device 8 to reciprocate on the welding surface of the welded part to grind the welding surface of the welded part to remove rust, oxide layer, etc.

[0034] In this embodiment, the valve stem is set as a rotating shaft 734 and an inverted U-shaped frame 735, and the inverted U-shaped frame 735 is sleeved on the mounting tube 81, so that when the rotating device 4 drives the rotating shaft 734 to rotate through the second assembly block 733, the rotating shaft 734 and the assembly tube 732 are threaded, and when the valve plate 731 is driven to rise and fall through the inverted U-shaped frame 735, the rotating shaft 734 rotates without being blocked by the mounting tube 81.

[0035] By installing the grinding device 8 on the liquid storage barrel 71, the descaling device 7 and the grinding device 8 are organically combined, thereby simplifying the structure of the entire cleaning assembly.

[0036] Among them, the extension line of the center line of the rotating shaft 734 intersects with the center line of the driving shaft 82, so that when the switching device 6 drives the liquid storage barrel 71 to rotate and switches the positions of the scale cleaning device 7 and the polishing device 8, the second assembly block 733 and the third assembly block 84 can be directly assembled with the output end of the rotating device 4.

[0037] Among them, the connection between the two ends of the mounting tube 81 and the liquid storage barrel 71 is sealed, the bottom end of the inner wall of the assembly tube 732 is provided with a horizontal surface, and a sealing ring is provided on the horizontal surface. The sealing ring fits the horizontal surface of the rotating shaft 734 to ensure the sealing, and the upper end of the rotating shaft 734 and the upper end of the inner wall of the assembly tube 732 are correspondingly provided with threaded surfaces.

[0038] In other embodiments, the cleaning component also includes a mounting plate, and the scale cleaning device 7 and the polishing device 8 are installed at ninety degrees on the mounting plate, wherein the liquid storage barrel 71 is fixedly installed on the mounting plate, and the driving shaft 82 is rotatably installed on the mounting plate through a bearing seat, and the inverted U-shaped frame 735 is sleeved on the driving shaft 82, and is connected to the valve plate 731 after passing through the liquid storage barrel 71, one end of the rotating shaft 734 is rotatably installed on the inverted U-shaped frame 735, and the other end is threadedly connected to the assembly tube 732, and the assembly tube 732 is installed on the mounting plate through a connecting frame, and the second assembly block 733 and the third assembly block 84 are still correspondingly installed on the ends of the rotating shaft 734 and the driving shaft 82.

[0039] See also Figure 3 In this embodiment, the rotating device 4 includes a rotating motor 41 and an inverted U-shaped frame 42 . The rotating motor 41 is installed on the assembly frame 3 , and the inverted U-shaped frame 42 is installed at the output end of the rotating motor 41 .

[0040] When the second assembly block 733 is assembled with the inverted U-shaped frame 42, a distance is left between the second assembly block 733 and the top wall of the inverted U-shaped frame 42, thereby satisfying the space requirement for the rotation of the shaft 734 and the threaded action of the assembly tube 732 to enable the shaft 734 to drive the second assembly block 733 to rise.

[0041] By providing the inverted U-shaped frame 42, when the welding assembly 5, the descaling device 7 and the grinding device 8 are assembled correspondingly to the output end of the rotating device 4, the first assembly block 54, the second assembly block 733 and the third assembly block 84 are correspondingly inserted into the inverted U-shaped frame 42 to achieve corresponding assembly, making the assembly operation simpler and more convenient; Please also see Fig. 9 (a) and Fig.10 In (a), when the cleaning device 7 and the polishing device 8 are switched, the switching device 6 drives the cleaning assembly to rotate, and when the positions of the cleaning device 7 and the polishing device 8 are switched, the second assembly block 733 or the third assembly block 84 can be directly inserted into the inverted U-shaped frame 42, and the corresponding assembly of the second assembly block 733 or the third assembly block 84 and the inverted U-shaped frame 42 is automatically realized; During installation, the rotating motor 41 drives the inverted U-shaped frame 42 to rotate, so that the socket of the inverted U-shaped frame 42 is aligned with the first assembly block 54 or the second assembly block 733, as shown in FIG. Fig. 9 (a) and Fig.10 (a) in the figure.

[0042] In other embodiments, an insert block may be installed at the bottom end of the rotating motor 41, and a U-shaped frame may be correspondingly installed on the mounting frame 52, the rotating shaft 734 and the driving shaft 82; when the welding assembly 5, the descaling device 7 and the grinding device 8 are assembled correspondingly with the rotating device 4, the insert block is inserted into the corresponding U-shaped frame to realize quick assembly; wherein, the inner cavity depth of the U-shaped frame is greater than the length of the insert block.

[0043] See also Figure 4 and Figure 8 In this embodiment, the switching device 6 includes a driving motor 61 and a threaded shaft 62. The driving motor 61 is installed on the side of the assembly frame 3. The driving motor 61 is vertically arranged with the rotating motor 41. The threaded shaft 62 is installed at the output end of the driving motor 61. The assembly component 9 includes a second threaded tube 91, a branch tube 92, a support plate 93 and a positioning pin 94. The second threaded tube 91 is installed at the end of the liquid storage barrel 71. The branch tube 92 is installed at the end of the liquid storage barrel 71 and sleeved on the outside of the second threaded tube 91. The support plate 93 is installed inside the branch tube 92. The positioning pin 94 penetrates the support plate 93 and is threadedly connected to the support plate 93. The second threaded tube 91 is provided with an assembly hole 911 corresponding to the positioning pin 94. A limiting hole 621 is provided on the threaded shaft 62 , and a positioning tube 31 is installed on the side of the assembly frame 3 and outside the threaded shaft 62 . The inner diameter of the positioning tube 31 is the same as the outer diameter of the branch tube 92 , and notches are provided on the branch tube 92 and the positioning tube 31 .

[0044] By setting the threaded shaft 62, when the cleaning component is installed on the assembly frame 3, the second threaded tube 91 at the end of the liquid storage barrel 71 is abutted against the threaded shaft 62, the rotating motor 41 adjusts the inverted U-shaped frame 42 so that the socket of the inverted U-shaped frame 42 is aligned with the second assembly block 733, the driving motor 61 drives the threaded shaft 62 to rotate, and the threaded shaft 62 is threadedly connected with the first threaded tube 55. When the threaded shaft 62 is completely threadedly connected with the first threaded tube 55, the first assembly block 54 is inserted into the inverted U-shaped frame 42, and the branch pipe 92 is correspondingly inserted into the positioning tube 31, thereby quickly realizing the installation of the cleaning component and the assembly frame 3; at this time, the limiting hole 621 on the threaded shaft 62 is aligned with the assembly hole 911 on the second threaded tube 91, and the notch on the branch pipe 92 and the positioning tube 31 are aligned.

[0045] After the installation is completed, the positioning pin 94 is screwed through the notches on the branch pipe 92 and the positioning pipe 31, and the positioning pin 94 and the support plate 93 are threaded to insert the positioning pin 94 into the assembly hole 911 and the limiting hole 621 in sequence, thereby limiting the second threaded pipe 91 and the threaded shaft 62; When the subsequent driving motor 61 drives the threaded shaft 62 to rotate, the second threaded tube 91 is simultaneously driven to rotate through the positioning pin 94, and the second threaded tube 91 drives the liquid storage barrel 71 to rotate, so that the positions of the cleaning sponge 72 in the liquid storage barrel 71 and the grinding disc 83 in the grinding device 8 can be adjusted, and the positions of the second assembly block 733 and the third assembly block 84 are correspondingly switched, so as to adjust the working states of the cleaning device 7 and the grinding device 8; That is, the switching device 6 can quickly complete the installation of the cleaning component and the subsequent installation of the welding component 5, which is convenient for replacing the cleaning component and the welding component 5. After the installation of the cleaning component is completed, the switching device 6 can be used to switch the use status of the cleaning device 7 and the grinding device 8.

[0046] Among them, by arranging the branch pipe 92 to be inserted into the positioning pipe 31, the positioning pipe 31 and the branch pipe 92 can assist in supporting the liquid storage barrel 71, thereby improving the stability of the installation.

[0047] Preferably, a ball bearing may be embedded in the inner wall of the positioning tube 31 , so that when the branch tube 92 rotates relative to the positioning tube 31 , the relative rotation is smoother, thereby reducing the friction between the branch tube 92 and the positioning tube 31 .

[0048] The support plate 93 is threadedly connected to the positioning pin 94 by installing bolts or opening threaded holes. A knob is provided at the end of the positioning pin 94 to facilitate the turning of the positioning pin 94.

[0049] In other embodiments, the switching device 6 includes a driving motor 61 and a square shaft, the square shaft is installed at the output end of the driving motor 61, and a limiting hole 621 is opened on the square shaft; the second threaded tube 91 in the assembly component 9 is replaced with a square tube, and one end of the positioning pin 94 passes through the square tube. During installation, the square tube is sleeved on the square shaft, and then the positioning pin 94 is screwed into the limiting hole 621 to complete the installation.

[0050] See also Figure 7 In this embodiment, the welding assembly 5 further includes a first threaded tube 55 , and the first threaded tube 55 is installed on the rotating seat 53 .

[0051] When the welding assembly 5 is installed on the assembly frame 3, the first threaded tube 55 on the rotating seat 53 is abutted against the threaded shaft 62, and the inverted U-shaped frame 42 is adjusted by rotating the motor 41 so that the socket of the inverted U-shaped frame 42 is aligned with the first assembly block 54. At this time, the driving motor 61 drives the threaded shaft 62 to rotate, and the threaded shaft 62 is threadedly connected with the first threaded tube 55. When the threaded shaft 62 is completely threadedly connected with the first threaded tube 55, the first assembly block 54 is completely assembled with the inverted U-shaped frame 42, thereby quickly realizing the installation of the welding assembly 5.

[0052] In other embodiments, the first threaded tube 55 can also be replaced by a square tube, and the threaded shaft 62 can be replaced by a square shaft. A corresponding limiting hole 621 can be opened on the square shaft, and a bolt can be threadedly connected to the square tube. During installation, the square tube can be sleeved on the square shaft, and then the bolt can be tightened to insert it into the limiting hole 621 to complete the installation.

[0053] See also Figure 7 and Figure 8As a preferred embodiment of the present invention, a positioning hole 32 is provided on the assembly frame 3 , a limiting rod 531 is installed on the rotating seat 53 , and the limiting rod 531 is arranged adjacent to the first threaded tube 55 .

[0054] When installing the welding assembly 5, when the first threaded tube 55 abuts against the threaded shaft 62, the limiting rod 531 is inserted into the positioning hole 32. The limiting rod 531 can limit the axial position of the welding assembly 5, so that it can rely on manual hand-held limiting, which is convenient for the installation of the welding assembly 5. At the same time, by setting the limiting rod 531 to be inserted into the positioning hole 32, the support and limiting of the welding assembly 5 can be assisted, thereby improving the stability of the installation of the welding assembly 5.

[0055] Preferably, a plurality of limiting rods 531 are provided. In this embodiment, there are two limiting rods 531 symmetrically arranged on both sides of the threaded shaft 62 .

[0056] See also Figure 4 As a preferred embodiment of this embodiment, the cleaning component further includes a flushing component 10 , and the flushing component 10 is installed on the liquid storage barrel 71 .

[0057] The flushing assembly 10 includes a main pipeline, multiple nozzles and a connecting pipe head. The main pipeline is installed on the liquid storage barrel 71, and multiple nozzles are equidistantly connected and installed on the main pipeline. The connecting pipe head is installed at one end of the main pipeline, and the other end of the main pipeline is sealed.

[0058] Wherein, the connecting pipe head is connected to the hose, and the other end of the hose is connected to the output end of the water pump, and the water pump is located in the cleaning water source; After the oil stains on the surface of the weldment are cleaned by the cleaning device or the rust, scale, etc. on the surface of the weldment are polished by the polishing device 8, the water pump is turned on, and the robot arm 2 can drive the flushing component 10 to move through the liquid storage barrel 71, and the water flow is sprayed from the main pipeline through the nozzle to flush the surface of the weldment, and the cleaned oil stains and organic solvents or the cleaned rust, scale, etc. are rinsed clean, so that automatic flushing can be achieved; Among them, the nozzle is preferably a fan-shaped nozzle.

[0059] As a preferred embodiment of this embodiment, a three-way pipe is provided on the connecting pipe head, one end of the three-way pipe is connected to the air pump through a pipeline, and the other end is connected to the water pump through a pipeline; and valves are correspondingly provided at both ends of the three-way pipe.

[0060] When the air pump is working, the gas is sprayed out through the main pipeline and the nozzle, so that the surface of the welded parts after being rinsed with clean water can be quickly dried.

[0061] As a preferred embodiment of this embodiment, a stopper 101 is installed at the bottom of the driving trolley 1 .

[0062] Since the welding robot uses a driving trolley 1 to move to a specified position and is mainly used on construction sites, a stop device 101 is provided so that after the driving trolley 1 travels to the specified position, the abutment portion of the stop device 101 abuts against the ground, thereby improving the stability of the driving trolley 1 and preventing the driving trolley 1 from being displaced during welding.

[0063] In one embodiment, the stopping device 101 includes a telescopic cylinder and a stopping plate. The telescopic cylinder is installed at the bottom of the driving trolley 1, and the stopping plate is installed at the output end of the telescopic cylinder.

[0064] The telescopic cylinder may be a pneumatic cylinder, a hydraulic cylinder or an electric push cylinder.

[0065] See also Figure 1 and Figure 2 A mounting cavity is provided on the driving trolley 1, and the robotic arm 2 is mounted in the mounting cavity. When not in use, the robotic arm 2 can be retracted into the mounting cavity, and the mounting cavity is sealed by a sealing cover (not shown), thereby protecting the robotic arm 2 and reducing the adhesion of dust and the like.

[0066] The working principle of the welding robot for construction sites provided by the present invention is as follows: First, when cleaning the welded parts, install the cleaning component on the assembly frame 3. During installation, the second threaded tube 91 at the end of the liquid storage barrel 71 is abutted against the threaded shaft 62, and the rotating motor 41 adjusts the inverted U-shaped frame 42 so that the socket of the inverted U-shaped frame 42 is aligned with the second assembly block 733. The driving motor 61 drives the threaded shaft 62 to rotate, and the threaded shaft 62 is threadedly connected with the first threaded tube 55. When the threaded shaft 62 is completely threadedly connected with the first threaded tube 55, the first assembly block 54 is inserted into the inverted U-shaped frame 42, and the branch tube 92 is correspondingly inserted into the positioning tube 31, thereby quickly realizing the installation of the cleaning component and the assembly frame 3; at this time, the limiting hole 621 on the threaded shaft 62 is aligned with the assembly hole 911 on the second threaded tube 91, and the notch on the branch tube 92 and the positioning tube 31 is aligned.

[0067] After the installation is completed, the positioning pin 94 is screwed through the notches on the branch pipe 92 and the positioning pipe 31, and the positioning pin 94 and the support plate 93 are threaded to insert the positioning pin 94 into the assembly hole 911 and the limiting hole 621 in sequence, thereby limiting the second threaded pipe 91 and the threaded shaft 62; When cleaning the oil stains on the surface of the weldment, the robot arm 2 drives the cleaning assembly to move to the position to be cleaned, the rotating device 4 drives the rotating shaft 734 to rotate through the second assembly block 733, the rotating shaft 734 and the assembly tube 732 are threaded, and the valve plate 731 is driven to rise through the inverted U-shaped frame 735, the valve plate 731 is separated from the inner wall of the liquid storage barrel 71, and the organic solvent inside the liquid storage barrel 71 contacts the cleaning sponge 72 through the liquid outlet, the cleaning sponge 72 absorbs the organic solvent, and the robot arm 2 drives the cleaning assembly to make the cleaning sponge 72 reciprocate and wipe the part of the weldment to be cleaned, and the oil stains are wiped off by the organic solvent; When cleaning the rust, scale, etc. on the surface of the welded parts, the driving motor 61 drives the threaded shaft 62 to rotate, and the second threaded tube 91 is driven to rotate through the positioning pin 94, and the second threaded tube 91 drives the liquid storage barrel 71 to rotate, so that the second assembly block 733 is separated from the inverted U-shaped frame 42, and the third assembly block 84 is assembled with the inverted U-shaped frame 42. Fig.10 During grinding, the rotating device 4 drives the shaft 82 to rotate through the third assembly block 84, and the shaft 82 drives the grinding disc 83 to rotate, and the mechanical arm 2 drives the grinding device 8 to reciprocate on the welding surface of the welded part to be welded, and grinds the welding surface of the welded part to remove rust, oxide layer, etc.; During welding, the first threaded tube 55 on the rotating seat 53 in the welding assembly 5 is brought into contact with the threaded shaft 62, and the inverted U-shaped frame 42 is adjusted by rotating the motor 41 so that the socket of the inverted U-shaped frame 42 is aligned with the first assembly block 54. At this time, the driving motor 61 drives the threaded shaft 62 to rotate, and the threaded shaft 62 is threadedly connected to the first threaded tube 55. When the threaded shaft 62 is completely threadedly connected to the first threaded tube 55, the first assembly block 54 is completely assembled with the inverted U-shaped frame 42, thereby quickly realizing the installation of the welding assembly 5. The subsequent rotating motor 41 can be used to adjust the angle of the welding gun 51 and the welding method, etc.

[0068] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A welding robot for use at a construction site, characterized in that: include: Drive trolleys, robotic arms, assembly racks, rotating devices, welding components, switching devices and cleaning components; The mechanical arm is mounted on the driving trolley, the assembly frame is mounted on the final arm of the mechanical arm, and the rotating device is mounted on the assembly frame; The cleaning assembly comprises a descaling device and a polishing device, wherein the descaling device and the polishing device are arranged vertically; When cleaning the welding workpiece, the cleaning assembly is detachably mounted on the assembly frame, and the switching device is used to drive the cleaning assembly to rotate, so that the input end of the cleaning device and the input end of the grinding device are detachably connected to the output end of the rotating device in sequence; When welding the welding workpiece, the cleaning component is disassembled, and the welding component is detachably mounted on the assembly frame, and the welding component is detachably connected to the output end of the rotating device.

2. The welding robot for construction sites according to claim 1, characterized in that: The welding assembly includes a welding gun, a mounting frame, a rotating seat and a first assembly block. The welding gun is installed on the mounting frame through, the rotating seat is installed on the mounting frame, the first assembly block is installed on the top of the mounting frame, the first assembly block is detachably connected to the output end of the rotating device, and the rotating seat is detachably connected to the assembly frame.

3. The welding robot for construction sites according to claim 1, characterized in that: The scale cleaning device comprises a liquid storage barrel, cleaning sponge and a valve member. A liquid outlet is provided at the bottom of the liquid storage barrel, one end of the cleaning sponge is installed in the liquid outlet, the valve member comprises a valve plate, an assembly pipe, a second assembly block and a valve stem. The valve plate is arranged inside the liquid storage barrel and blocks the liquid outlet. The assembly pipe is installed through the top of the liquid storage barrel. The bottom end of the valve stem is connected to the valve plate. The top end of the valve stem passes through the assembly pipe and is threadedly connected to the assembly pipe. The second assembly block is installed on the top end of the valve stem. When the scale cleaning device is in use, the second assembly block is detachably connected to the output end of the rotating device, and the liquid storage barrel is detachably connected to the assembly frame via an assembly component.

4. The welding robot for construction sites according to claim 3, characterized in that: The grinding device comprises a mounting tube, a driving shaft, a grinding disc and a third assembly block, wherein the mounting tube is installed through the liquid storage barrel and is vertically arranged with the liquid outlet, the driving shaft passes through the mounting tube and is rotatably connected with the mounting tube, the grinding disc is installed at one end of the driving shaft, and the third assembly block is installed at the other end of the driving shaft; The valve stem comprises a rotating shaft and an inverted U-shaped frame, wherein the inverted U-shaped frame is sleeved on the mounting tube and connected to the valve plate, the bottom end of the rotating shaft is rotatably mounted on the top of the inverted U-shaped frame, the top end of the rotating shaft is threadedly connected to the assembly tube, and the second assembly block is mounted on the top end of the rotating shaft; When the grinding device is in use, the third assembly block is detachably connected to the output end of the rotating device.

5. The welding robot for construction sites according to claim 4, characterized in that: The rotating device comprises a rotating motor and an inverted U-shaped frame. The rotating motor is mounted on the assembly frame, and the inverted U-shaped frame is mounted on the output end of the rotating motor.

6. The welding robot for construction sites according to claim 5, characterized in that: The switching device comprises a driving motor and a threaded shaft, wherein the driving motor is mounted on the side of the assembly frame, the driving motor is vertically arranged with the rotating motor, and the threaded shaft is mounted at the output end of the driving motor; The assembly assembly includes a second threaded tube, a branch tube, a support plate and a positioning pin, wherein the second threaded tube is installed at the end of the liquid storage barrel, the branch tube is installed at the end of the liquid storage barrel and sleeved on the outside of the second threaded tube, the support plate is installed inside the branch tube, the positioning pin passes through the support plate and is threadedly connected to the support plate, and an assembly hole is opened on the second threaded tube corresponding to the positioning pin; A limiting hole is provided on the threaded shaft, a positioning tube is installed on the side of the assembly frame and outside the threaded shaft, the inner diameter of the positioning tube is the same as the outer diameter of the branch tube, and notches are provided on the branch tube and the positioning tube.

7. The welding robot for construction sites according to claim 2, characterized in that: The welding assembly further includes a first threaded tube mounted on the rotating seat.

8. The welding robot for construction sites according to claim 7, characterized in that: A positioning hole is provided on the assembly frame, a limiting rod is installed on the rotating seat, and the limiting rod is arranged adjacent to the first threaded tube.

9. The welding robot for construction sites according to claim 3, characterized in that: The cleaning assembly also includes a flushing assembly, and the flushing assembly is mounted on the liquid storage barrel.

10. The welding robot for construction sites according to claim 1, characterized in that: A stopper is installed at the bottom of the driving trolley.

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