A welding robot for construction sites

Abstract

The present invention provides a welding robot for construction sites, comprising: a driving trolley, a robotic arm, an assembly frame, a rotating device, a welding assembly, a switching device and a cleaning assembly; the robotic arm is installed on the driving trolley, the assembly frame is installed on the last-stage arm of the robotic arm, the rotating device is installed on the assembly frame, the cleaning assembly includes a scale removal device and a grinding device, the scale removal device and the grinding device are vertically arranged, and when cleaning a welding workpiece, the cleaning assembly is detachably installed on the assembly frame. The welding robot for construction sites provided by the present invention can be assembled with the cleaning assembly or the welding assembly through the robotic arm respectively, so as to sequentially realize the automatic cleaning work of removing oil stains, rust and oxide layers from the welded parts, and drive the welding assembly to realize the automatic welding work, thus eliminating the need for workers to clean with different cleaning tools in sequence and simplifying the cleaning work.

Description

Technical Field

[0001] The present invention relates to the field of welding robots, and in particular to a welding robot for 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 a welding component, etc. It can precisely control the welding tool to perform welding operations on the workpiece according to a pre-set program and path.

[0003] Welding robots are widely used in multiple 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, etc., to ensure the welding quality, it is first necessary to clean the surface of the welded parts, including cleaning the dust, oil stains, rust, scale, etc. on the surface of the welded parts.

[0004] In the prior art, when cleaning welded parts, it is usually necessary for workers to use different cleaning tools to clean the welded parts. For example, organic solvents and brushes are used to clean the oil stains on the surface of the welded parts, sandpaper or grinding tools are used to clean the rust and scale on the surface of the welded parts. Using different cleaning tools to perform corresponding cleaning operations on the surface of the welded parts is troublesome. There is still room for improvement in how to combine the cleaning components for the surface of the welded parts with the robotic arm of the welding robot.

[0005] Therefore, it is necessary to provide a welding robot for construction sites to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a welding robot for construction sites, which solves the problem that when cleaning welded parts, it is usually necessary for workers to use different cleaning tools to clean the welded parts, and the cleaning operation is troublesome.

[0007] To solve the above technical problems, the welding robot for construction sites provided by the present invention includes: a driving trolley, a robotic arm, an assembly frame, a rotating device, a welding component, a switching device, and a cleaning component;

[0008] The robotic arm is installed on the driving trolley, the assembly frame is installed on the end arm of the robotic arm, and the rotating device is installed on the assembly frame;

[0009] The cleaning component includes a descaling device and a grinding device, and the descaling device and the grinding device are vertically arranged;

[0010] When cleaning the welded workpiece, the cleaning assembly is disassembled. The cleaning assembly is detachably mounted on the assembly rack. 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 sequentially and detachably connected to the output end of the rotating device;

[0011] When welding the welded workpiece, the welding assembly is detachably mounted on the assembly rack, and the welding assembly is detachably connected to the output end of the rotating device.

[0012] Preferably, the welding assembly includes a welding torch, a mounting rack, a rotating seat and a first assembly block. The welding torch is installed through the mounting rack. The rotating seat is sleeved on the mounting rack. The first assembly block is installed on the top of the mounting rack. The first assembly block is detachably connected to the output end of the rotating device. The rotating seat is detachably connected to the assembly rack.

[0013] Preferably, the descaling device includes a liquid storage barrel, a cleaning sponge and a valve member. A liquid outlet is formed at the bottom of the liquid storage barrel. One end of the cleaning sponge is installed in the liquid outlet. The valve member includes a valve plate, an assembly pipe, a second assembly block and a valve rod. 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 rod is connected to the valve plate. The top end of the valve rod penetrates through the assembly pipe and is threadedly connected to the assembly pipe. The second assembly block is installed at the top end of the valve rod;

[0014] When the descaling device is in use, the second assembly block is detachably connected to the output end of the rotating device. The liquid storage barrel is detachably connected to the assembly rack through an assembly component.

[0015] Preferably, the grinding device includes a mounting pipe, a driving shaft, a grinding disc and a third assembly block. The mounting pipe is installed through the liquid storage barrel and is perpendicular to the liquid outlet. The driving shaft penetrates through the mounting pipe and is rotatably connected to the mounting pipe. The grinding disc is installed at one end of the driving shaft. The third assembly block is installed at the other end of the driving shaft;

[0016] The valve rod includes a rotating shaft and an inverted U-shaped frame. The inverted U-shaped frame is sleeved on the mounting pipe and is connected to the valve plate. The bottom end of the rotating shaft is rotatably installed on the top of the inverted U-shaped frame. The top end of the rotating shaft is threadedly connected to the assembly pipe. The second assembly block is installed at the top end of the rotating shaft;

[0017] When the grinding device is in use, the third assembly block is detachably connected to the output end of the rotating device.

[0018] Preferably, the rotating device includes a rotating motor and an inverted U-shaped frame. The rotating motor is installed on the assembly frame, and the inverted U-shaped frame is installed at the output end of the rotating motor.

[0019] Preferably, the switching device includes a driving motor and a threaded shaft. The driving motor is installed on the side of the assembly frame, the driving motor is vertically arranged with the rotating motor, and the threaded shaft is installed at the output end of the driving motor;

[0020] The assembly component includes a second threaded pipe, a branch pipe, a support plate and a positioning pin. The second threaded pipe is installed at the end of the liquid storage barrel, the branch pipe is installed at the end of the liquid storage barrel and sleeved outside the second threaded pipe, the support plate is installed inside the branch pipe, the positioning pin penetrates through the support plate and is threadedly connected with the support plate, and an assembly hole is formed in the second threaded pipe corresponding to the positioning pin;

[0021] A limiting hole is formed in the threaded shaft, a positioning pipe is installed on the side of the assembly frame and outside the threaded shaft, the inner diameter of the positioning pipe is the same as the outer diameter of the branch pipe, and notches are formed in both the branch pipe and the positioning pipe.

[0022] Preferably, the welding component further includes a first threaded pipe, and the first threaded pipe is installed on the rotating seat.

[0023] Preferably, a positioning hole is formed in the assembly frame, a limiting rod is installed on the rotating seat, and the limiting rod is arranged adjacent to the first threaded pipe.

[0024] Preferably, the cleaning component further includes a flushing component, and the flushing component is installed on the liquid storage barrel.

[0025] Preferably, a stopping device is installed at the bottom of the driving trolley.

[0026] Compared with the related art, the welding robot for construction sites provided by the present invention has the following beneficial effects:

[0027] The present invention provides a welding robot for construction sites. During welding, first, the welding parts are cleaned. The cleaning component is installed on the assembly frame. When there is oil stain on the surface of the welding parts, the input end of the scale removal device in the cleaning component is assembled with the output end of the rotating device. The robotic arm drives the cleaning component to move to the position to be cleaned. The rotating device works, so that the organic solvent in the scale removal device flows into the cleaning part. The robotic arm can drive the cleaning component to make the cleaning part of the scale removal device wipe back and forth on the part to be cleaned of the welding parts, and wipe off the oil stain with the organic solvent. Subsequently, the organic solvent is rinsed clean with clean water;

[0028] When there is rust, scale, etc. on the surface of the welded part, the switching device drives the cleaning component to rotate, switches the positions of the descaling device and the grinding device, 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, and at the same time, the robotic arm drives the grinding device to reciprocate to grind the part to be ground to remove rust, scale, etc.; subsequently, after cleaning is completed, the cleaning component is removed, the welding component is installed on the assembly rack, and the welding component is assembled with the output end of the rotating device, and the robotic arm drives the welding component to perform welding treatment on the welded part;

[0029] Thus, by assembling and using the robotic arm with the cleaning component or the welding component respectively, it is possible to sequentially achieve automatic cleaning work such as removing oil stains, rust, and oxide layers from the welded part, and driving the welding component to achieve automatic welding work. Therefore, it is not necessary for workers to use different cleaning tools to clean sequentially, which simplifies the cleaning work, and the rotating device can be used to drive the descaling device and the grinding device to work, and to adjust the angle of the welding component as needed, etc., without corresponding driving equipment being set up. Brief Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of the welding robot for construction sites provided by the present invention;

[0031] Figure 2 is Figure 1 a schematic structural diagram of another perspective of the welding robot for construction sites shown;

[0032] Figure 3 is Figure 2 an enlarged schematic diagram of part A shown;

[0033] Figure 4 is a schematic structural diagram of the cleaning component provided by the present invention;

[0034] Figure 5 is Figure 4 a sectional view taken along A - A shown;

[0035] Figure 6 is a schematic diagram of the liquid storage barrel assembled with the assembly rack and the rotating device provided by the present invention;

[0036] Figure 7 is a schematic structural diagram of the welding component provided by the present invention;

[0037] Figure 8 is a schematic structural diagram of the rotating device, the assembly rack and the switching device provided by the present invention;

[0038] Figure 9 is a schematic diagram of the working principle of the descaling device provided by the present invention, wherein, Figure 9Among them, (a) is a schematic diagram of the second assembly block assembled with the inverted U-shaped frame, Figure 9 and (b) is a schematic diagram of the rotating device driving the second assembly block to rotate and lift the valve plate;

[0039] Figure 10 This is a schematic diagram of the working principle of the grinding device provided by the present invention. Among them, Figure 10 (a) is a schematic diagram of the third assembly block assembled with the inverted U-shaped frame, Figure 10 and (b) is a schematic diagram of the rotating device driving the third assembly block to drive the grinding disc to rotate.

[0040] Reference numerals in the figure:

[0041] 1. Driving trolley; 101. Stopping device;

[0042] 2. Manipulator; 21. Final stage arm;

[0043] 3. Assembly rack; 31. Positioning tube; 32. Positioning hole;

[0044] 4. Rotating device; 41. Rotating motor; 42. Inverted U-shaped frame;

[0045] 5. Welding assembly; 51. Welding torch; 52. Mounting rack; 53. Rotating seat; 54. First assembly block; 55. First threaded tube; 531. Limiting rod;

[0046] 6. Switching device; 61. Driving motor; 62. Threaded shaft; 621. Limiting hole;

[0047] 7. Scaling removal device; 71. Liquid storage bucket; 72. Cleaning sponge; 73. Valve part; 74. Liquid replenishing tube;

[0048] 731. Valve plate; 732. Assembly tube; 733. Second assembly block; 734. Rotating shaft; 735. Inverted U-shaped frame;

[0049] 8. Grinding device; 81. Mounting tube; 82. Driving shaft; 83. Grinding disc; 84. Third assembly block;

[0050] 9. Assembly component; 91. Second threaded tube; 92. Branch pipe; 93. Support plate; 94. Positioning pin; 911. Assembly hole;

[0051] 10. Flushing component. Detailed implementation manner

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] The present invention provides a welding robot for construction sites.

[0054] Please refer to Figures 1 to 4 , in an embodiment of the present invention, the welding robot for construction sites includes: a driving cart 1, a robotic arm 2, an assembly rack 3, a rotating device 4, a welding assembly 5, a switching device 6, and a cleaning assembly;

[0055] The robotic arm 2 is installed on the driving cart 1, the assembly rack 3 is installed on the last-stage arm 21 of the robotic arm 2, and the rotating device 4 is installed on the assembly rack 3;

[0056] The cleaning assembly includes a scale-removing device 7 and a grinding device 8, and the scale-removing device 7 and the grinding device 8 are vertically arranged;

[0057] When cleaning a welding workpiece, the cleaning assembly is detachably installed on the assembly rack 3, and the switching device 6 is used to drive the cleaning assembly to rotate, so that the input end of the scale-removing device 7 and the input end of the grinding device 8 are sequentially and detachably connected to the output end of the rotating device 4;

[0058] When welding a welding workpiece, the cleaning assembly is removed, and the welding assembly 5 is detachably installed on the assembly rack 3, and the welding assembly 5 is detachably connected to the output end of the rotating device 4.

[0059] In this embodiment, the scale-removing device 7 stores an organic solvent for easily removing oil stains, such as kerosene, acetone, etc. When the rotating device 4 drives the input end of the scale-removing device 7 to rotate, the liquid outlet of the scale-removing device 7 opens, and the organic solvent flows into the cleaning part of the scale-removing device 7 through the liquid outlet;

[0060] When the rotating device 4 drives the input end of the grinding device 8 to rotate, it can drive the grinding part to perform grinding work;

[0061] When the rotating device 4 is assembled with the welding assembly 5, the welding angle of the welding torch 51 in the welding assembly 5 can be adjusted according to the welding requirements, and at the same time, the welding method can also be adjusted, such as the welding method of moving and rotating at the same time. The robotic arm 2 drives the welding torch 51 to move horizontally, and the rotating device 4 simultaneously drives the welding assembly 5 to rotate for welding.

[0062] When welding welded parts such as steel beams and pipes, the driving trolley 1 moves to the welding position on one side of the part to be welded.

[0063] During welding, first clean the welded part. Install the cleaning component on the assembly rack 3. When there is oil stain on the surface of the welded part, assemble the input end of the scale removal device 7 in the cleaning component with the output end of the rotating device 4. The robotic arm 2 drives the cleaning component to move to the position to be cleaned. The rotating device 4 works, so that the organic solvent in the scale removal device 7 flows into the cleaning part. The robotic arm 2 can drive the cleaning component to make the cleaning part of the scale removal device 7 wipe back and forth on the part to be cleaned of the welded part, wipe off the oil stain with the organic solvent, and then rinse the organic solvent with clean water;

[0064] When there are rust, oxide scales, etc. on the surface of the welded part, the switching device 6 drives the cleaning component to rotate, switches the positions of the scale removal 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, oxide scales, etc., the rotating device 4 works to drive the grinding part of the grinding device 8 to work. At the same time, the robotic arm 2 drives the grinding device 8 to move back and forth to grind the part to be ground and remove rust, oxide scales, etc.;

[0065] Subsequently, after the cleaning is completed, remove the cleaning component, install the welding component 5 on the assembly rack 3, and assemble the welding component 5 with the output end of the rotating device 4. The robotic arm 2 drives the welding component 5 to perform welding treatment on the welded part;

[0066] Thus, by assembling and using the robotic arm 2 with the cleaning component or the welding component 5 respectively, it is possible to automatically perform cleaning work such as removing oil stains, rust, and oxide layers on the welded part in sequence, and drive the welding component 5 to achieve automatic welding work. Therefore, it is not necessary for workers to use different cleaning tools to clean in sequence, which simplifies the cleaning work, and the rotating device 4 can be used to drive the scale removal device 7 and the grinding device 8 to work, and to adjust the angle of the welding component 5 as needed, etc., without corresponding driving equipment being set up.

[0067] Please refer to Figure 3 In this embodiment, the welding component 5 includes a welding torch 51, a mounting bracket 52, a rotating base 53, and a first assembly block 54. The welding torch 51 is installed through the mounting bracket 52. The rotating base 53 is sleeved and installed on the mounting bracket 52. The first assembly block 54 is installed on the top of the mounting bracket 52. The first assembly block 54 is detachably connected to the output end of the rotating device 4, and the rotating base 53 is detachably connected to the assembly rack 3.

[0068] During use, the robotic arm 2 drives the assembly rack 3 to move. The assembly rack 3 drives the mounting bracket 52 to move along through the rotating base 53, and the mounting bracket 52 drives the welding torch 51 to move along to achieve welding work.

[0069] By providing the rotating base 53, when the rotating device 4 drives the mounting bracket 52 to drive the welding torch 51 to rotate, the mounting bracket 52 and the welding torch 51 can rotate relative to the assembly frame 3 through the rotating base 53, so that the assembly frame 3 will not block the rotation adjustment of the welding torch 51 by the rotating device 4.

[0070] The rotating base 53 is a bearing seat or the like, and the mounting bracket 52 is installed on the inner wall of the inner ring of the bearing seat; by assembling the rotating base 53 with the assembly frame 3, the stability of the installation of the welding assembly 5 is further ensured, and subsequent cooperation with the switching device 6 can achieve automatic assembly, which is convenient and fast for assembly.

[0071] In other embodiments, the welding assembly 5 may also only include the welding torch 51, the mounting bracket 52 and the first assembly block 54; wherein, the welding torch 51 is installed on the mounting bracket 52, the first assembly block 54 is installed on the top of the mounting bracket 52, and the first assembly block 54 is detachably connected to the output end of the rotating device 4 by bolts or snap connections or the like.

[0072] Please refer to Figure 4 , in this embodiment, the descaling device 7 includes a liquid storage barrel 71, a cleaning sponge 72 and a valve member 73. The bottom of the liquid storage barrel 71 is provided with a liquid outlet, one end of the cleaning sponge 72 is installed in the liquid outlet, the valve member 73 includes a valve plate 731, an assembly pipe 732, a second assembly block 733 and a valve rod. 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 rod is connected to the valve plate 731. The top end of the valve rod 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 end of the valve rod;

[0073] 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 through the assembly component 9.

[0074] When using the descaling device 7 to clean the oil stain on the surface of the welded part, the rotating device 4 drives the second assembly block 733 to rotate. The second assembly block 733 drives the valve rod to rotate. The valve rod acts with the assembly pipe 732 in a threaded manner to drive the valve plate 731 to move upward, as shown in Figure 9 in (a) and Figure 9 in (b). At this time, the valve plate 731 is separated from the inner wall of the liquid storage barrel 71. 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. Subsequently, the robotic arm 2 drives the cleaning component to reciprocate and wipe the cleaning part of the welded part to remove the oil stain.

[0075] Among them, one end of the liquid storage barrel 71 is communicated with a liquid replenishing pipe 74, and a sealing cover is threadedly connected to the liquid replenishing pipe 74. By removing the sealing cover, organic solvent is replenished into the interior of the liquid storage barrel 71.

[0076] In other embodiments, the descaling device 7 can also replace the cleaning sponge 72 with a cleaning brush or the like. The cleaning brush is installed at the liquid outlet of the liquid storage barrel 71, and water permeable holes are provided in the brush handle of the cleaning brush. When the valve plate 731 is opened, the organic solvent flows into the bristles and the part to be cleaned of the welded part through the water permeable holes in the brush handle.

[0077] Please refer to Figure 4 、 Figure 9 and Figure 10 In this embodiment, the grinding device 8 includes an installation pipe 81, a driving shaft 82, a grinding disc 83 and a third assembly block 84. The installation pipe 81 is installed through the liquid storage barrel 71 and is perpendicular to the liquid outlet. The driving shaft 82 penetrates through the installation pipe 81 and is rotatably connected to the installation pipe 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;

[0078] The valve rod includes a rotating shaft 734 and an inverted U-shaped frame 735. The inverted U-shaped frame 735 is sleeved on the installation pipe 81 and is connected to the valve plate 731. The bottom end of the rotating shaft 734 is rotatably installed at the top of the inverted U-shaped frame 735. The top end of the rotating shaft 734 is threadedly connected to the assembly pipe 732, and the second assembly block 733 is installed at the top end of the rotating shaft 734;

[0079] 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.

[0080] During grinding, the rotating device 4 drives the driving shaft 82 to rotate through the third assembly block 84, the driving shaft 82 drives the grinding disc 83 to rotate, and the robotic arm 2 drives the grinding device 8 to reciprocate on the welding surface of the workpiece to be welded, so as to grind the welding surface of the welded part and remove rust, oxide layer, etc.

[0081] In this embodiment, by setting the valve rod as the rotating shaft 734 and the inverted U-shaped frame 735, and the inverted U-shaped frame 735 is sleeved on the installation pipe 81, when the rotating device 4 drives the rotating shaft 734 to rotate through the second assembly block 733, and the rotating shaft 734 acts with the assembly pipe 732 to drive the valve plate 731 to lift and lower through the inverted U-shaped frame 735, the rotation of the rotating shaft 734 will not be blocked by the installation pipe 81.

[0082] By installing the grinding device 8 on the liquid storage barrel 71, the descaling device 7 and the grinding device 8 are organically combined, simplifying the structure of the entire cleaning assembly.

[0083] Among them, the extension line of the center line of the rotating shaft 734 intersects with the center line of the driving shaft 82. Thus, 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 grinding 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.

[0084] Among them, the connections between the two ends of the installation pipe 81 and the liquid storage barrel 71 are sealed. The bottom end of the inner wall of the assembly pipe 732 is provided with a horizontal plane, and a sealing ring is arranged on the horizontal plane part. The sealing ring fits the horizontal plane of the rotating shaft 734, thereby ensuring the sealing performance. The upper end of the rotating shaft 734 and the upper end of the inner wall of the assembly pipe 732 are correspondingly provided with threaded surfaces.

[0085] In other embodiments, the cleaning assembly further includes a mounting plate. The scale cleaning device 7 and the grinding device 8 are installed on the mounting plate at a ninety-degree angle. Among them, the liquid storage barrel 71 is fixedly installed on the mounting plate. The driving shaft 82 is rotatably installed on the mounting plate through a bearing seat. 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 pipe 732. The assembly pipe 732 is installed on the mounting plate through a connecting frame. The second assembly block 733 and the third assembly block 84 are still correspondingly installed at the ends of the rotating shaft 734 and the driving shaft 82.

[0086] Please refer to 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.

[0087] Among them, when the second assembly block 733 is assembled with the inverted U-shaped frame 42, a gap is left between the second assembly block 733 and the top wall of the inverted U-shaped frame 42, so as to meet the space requirement for the rotation of the rotating shaft 734 and the threaded action of the assembly pipe 732 to drive the second assembly block 733 to rise by the rotating shaft 734.

[0088] By providing the inverted U-shaped frame 42, when the welding assembly 5, the scale cleaning device 7 and the grinding device 8 are correspondingly assembled with the output end of the rotating device 4, the corresponding assembly is realized by correspondingly inserting the first assembly block 54, the second assembly block 733 and the third assembly block 84 into the inverted U-shaped frame 42, making the assembly operation simpler and more convenient;

[0089] And please refer to Figure 9 in (a) of Figure 10In (a) of [reference], when switching between the descaling device 7 and the grinding device 8, the switching device 6 drives the cleaning assembly to rotate. When switching the positions of the descaling device 7 and the grinding device 8, the second assembly block 733 or the third assembly block 84 can be directly inserted into the inverted U-shaped frame 42 correspondingly, automatically realizing the corresponding assembly of the second assembly block 733 or the third assembly block 84 and the inverted U-shaped frame 42;

[0090] And during installation, the rotating motor 41 drives the inverted U-shaped frame 42 to rotate, aligning the socket of the inverted U-shaped frame 42 with the first assembly block 54 or the second assembly block 733, as shown in Figure 9 in (a) of [reference] and Figure 10 in (a) of [reference].

[0091] In other embodiments, a plug can also be installed at the bottom end of the rotating motor 41, and U-shaped frames are 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 correspondingly assembled with the rotating device 4, the plug is inserted into the corresponding U-shaped frame to achieve rapid assembly; wherein, the inner cavity depth of the U-shaped frame is greater than the length of the plug.

[0092] Please refer to 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, and the threaded shaft 62 is installed at the output end of the driving motor 61;

[0093] The assembly component 9 includes a second threaded tube 91, a branch pipe 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 pipe 92 is installed at the end of the liquid storage barrel 71 and sleeved outside the second threaded tube 91, the support plate 93 is installed inside the branch pipe 92, the positioning pin 94 penetrates through the support plate 93 and is threadedly connected with the support plate 93, and an assembly hole 911 is opened on the second threaded tube 91 corresponding to the positioning pin 94;

[0094] A limiting hole 621 is opened 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 pipe 92, and notches are opened on both the branch pipe 92 and the positioning tube 31.

[0095] By setting the threaded shaft 62, when the cleaning assembly is installed on the mounting frame 3, the second threaded tube 91 at the end of the liquid storage barrel 71 abuts against the threaded shaft 62. The rotating motor 41 is rotated to adjust 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. 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 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 assembly on the mounting 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 notches on the branch pipe 92 and the positioning tube 31 are aligned.

[0096] After the installation is completed, through the notches on the branch pipe 92 and the positioning tube 31, the positioning pin 94 is screwed. The positioning pin 94 acts threadedly with the support plate 93, so that the positioning pin 94 is sequentially inserted into the assembly hole 911 and the limiting hole 621, thereby limiting the second threaded tube 91 and the threaded shaft 62.

[0097] Subsequently, when the 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. The second threaded tube 91 drives the liquid storage barrel 71 to rotate, so that the position 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 can be correspondingly switched, thereby adjusting the working states of the descaling device 7 and the grinding device 8.

[0098] That is, the switching device 6 can quickly complete the installation of the cleaning assembly and the subsequent installation of the welding assembly 5, which is convenient for replacing the cleaning assembly and the welding assembly 5. After the cleaning assembly is installed, the switching device 6 can be used to switch the usage states of the descaling device 7 and the grinding device 8.

[0099] Among them, by setting the branch pipe 92 to be inserted into the positioning tube 31, the positioning tube 31 and the branch pipe 92 can cooperate to assist in supporting the liquid storage barrel 71, improving the stability of the installation.

[0100] Preferably, balls can be embedded in the inner wall of the positioning tube 31. When the branch pipe 92 rotates relative to the positioning tube 31, the relative rotation is smoother, reducing the friction between the branch pipe 92 and the positioning tube 31.

[0101] Among them, the support plate 93 is threadedly connected to the positioning pin 94 by installing bolts or by opening threaded holes. A knob is provided at the end of the positioning pin 94 to facilitate screwing the positioning pin 94.

[0102] 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 formed in the square shaft. In the assembly component 9, the second threaded tube 91 is replaced by a square tube. One end of the positioning pin 94 penetrates through the square tube correspondingly. 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.

[0103] Please refer to 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.

[0104] 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. The inverted U-shaped frame 42 is adjusted by the rotating 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. The threaded shaft 62 is in threaded connection with the first threaded tube 55. When the threaded shaft 62 is completely in threaded connection with the first threaded tube 55, the first assembly block 54 and the inverted U-shaped frame 42 are completely assembled, so as to quickly realize the installation of the welding assembly 5.

[0105] In other embodiments, the first threaded tube 55 can also be replaced by a square tube, and the threaded shaft 62 is replaced by a square shaft. A limiting hole 621 is correspondingly formed in the square shaft. A bolt is threadedly connected to the square tube. During installation, the square tube is sleeved on the square shaft, and then the bolt is screwed to insert it into the limiting hole 621 to complete the installation.

[0106] Please refer to Figure 7 and Figure 8 , as a preferred manner of this embodiment, a positioning hole 32 is formed in the assembly frame 3, and a limiting rod 531 is installed on the rotating seat 53. The limiting rod 531 is arranged adjacent to the first threaded tube 55.

[0107] 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 axially limit the welding assembly 5, so that manual holding and limiting can be relied on, 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 welding assembly 5 is supported and limited, and the installation stability of the welding assembly 5 is improved.

[0108] Preferably, a plurality of limiting rods 531 are provided. In this embodiment, the number of limiting rods 531 is two, and they are symmetrically arranged on both sides of the threaded shaft 62.

[0109] Please refer to Figure 4 , as a preferred manner of this embodiment, the cleaning assembly further includes a flushing assembly 10, and the flushing assembly 10 is installed on the liquid storage barrel 71.

[0110] The flushing assembly 10 includes a main pipeline, a plurality of spray heads and connecting pipe heads. The main pipeline is installed on the liquid storage barrel 71. The plurality of spray heads are equidistantly communicated 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.

[0111] Among them, the connecting pipe head is connected to a hose, and the other end of the hose is connected to the output end of the water pump. The water pump is located in the cleaning water source.

[0112] After cleaning the oil stains and the like on the surface of the welded part by the descaling device or grinding the rust, scale and the like on the surface of the welded part to be welded by the grinding device 8, the water pump is started. The robotic arm 2 can drive the flushing assembly 10 to move through the liquid storage barrel 71. The water flow is ejected from the main pipeline through the spray heads to flush the surface of the welded part to be welded, and the washed oil stains and organic solvents or the removed rust, scale and the like are flushed clean, so that automatic flushing can be realized.

[0113] Among them, the spray head is preferably a fan-shaped spray head.

[0114] As a preferred mode of this embodiment, a three-way pipe is provided at the connecting pipe head. One end of the three-way pipe is connected to an air pump through a pipeline, and the other end is connected to a water pump through a pipeline; and valves are correspondingly arranged at both ends of the three-way pipe.

[0115] When the air pump works, the gas is ejected from the main pipeline through the spray heads, so that the surface of the welded part after being rinsed with clean water can be quickly air-dried.

[0116] As a preferred mode of this embodiment, a stopping device 101 is installed at the bottom of the driving trolley 1.

[0117] Since this welding robot uses the driving trolley 1 to move to a specified position and is mainly used in a construction site, by setting the stopping device 101, after the driving trolley 1 travels to the specified position, the abutting part of the stopping device 101 abuts on the ground, thereby improving the stability of the driving trolley 1 and preventing the driving trolley 1 from displacing during the welding process.

[0118] 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.

[0119] Among them, the telescopic cylinder can be a pneumatic cylinder, a hydraulic cylinder or an electric push cylinder.

[0120] Please refer to Figure 1 and Figure 2, an installation cavity is provided on the driving trolley 1, and the robotic arm 2 is installed in the installation cavity. When not in use, the robotic arm 2 can be retracted into the installation cavity, and the installation cavity is covered by a sealing cover (not shown in the figure), so as to protect the robotic arm 2 and reduce the adhesion of dust, etc.

[0121] The working principle of the welding robot for construction sites provided by the present invention is as follows:

[0122] When cleaning the welded parts for the first time, the cleaning component is installed on the assembly rack 3. During installation, the second threaded pipe 91 at the end of the liquid storage barrel 71 is abutted against the threaded shaft 62, and the rotating motor 41 is used to adjust 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. The threaded shaft 62 is threadedly connected with the first threaded pipe 55. When the threaded shaft 62 is completely threadedly connected with the first threaded pipe 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 pipe 31, so as to quickly realize the installation of the cleaning component and the assembly rack 3; at this time, the limiting hole 621 on the threaded shaft 62 is aligned with the assembly hole 911 on the second threaded pipe 91, and the notches on the branch pipe 92 and the positioning pipe 31 are aligned.

[0123] After the installation is completed, through the notches on the branch pipe 92 and the positioning pipe 31, the positioning pin 94 is screwed. The positioning pin 94 acts with the support plate 93 through threads, so that the positioning pin 94 is sequentially inserted into the assembly hole 911 and the limiting hole 621, so as to limit the second threaded pipe 91 and the threaded shaft 62;

[0124] When cleaning the oil stain on the surface of the welded part, the robotic arm 2 drives the cleaning component 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 acts with the assembly pipe 732 through threads, and drives the valve plate 731 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. 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. The robotic arm 2 drives the cleaning component to make the cleaning sponge 72 wipe back and forth on the part to be cleaned of the welded part, and wipe off the oil stain through the organic solvent;

[0125] When cleaning the rust, scale, etc. on the surface of the part to be welded, when the driving motor 61 drives the threaded shaft 62 to rotate, the second threaded pipe 91 is driven to rotate simultaneously through the positioning pin 94. The second threaded pipe 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, as Figure 10 , during grinding, the rotating device 4 drives the driving shaft 82 to rotate through the third assembly block 84. The driving 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 part to be welded, and grinds the welding surface of the welded part to remove rust, oxide layer, etc.;

[0126] During welding, the first threaded tube 55 on the rotating base 53 in the welding assembly 5 is abutted against the threaded shaft 62. The inverted U-shaped frame 42 is adjusted by the rotating motor 41 so that the socket of the inverted U-shaped frame 42 is aligned with the first fitting block 54. At this time, the driving motor 61 drives the threaded shaft 62 to rotate. 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 fitting block 54 and the inverted U-shaped frame 42 are completely assembled, thus quickly realizing the installation of the welding assembly 5. Subsequently, the rotating motor 41 can be used to adjust the angle and welding method of the welding torch 51, etc.

[0127] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly 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; The descaling device comprises a liquid storage barrel and a valve member, wherein a liquid outlet is provided at the bottom of the liquid storage barrel, and the valve member comprises a valve plate, an assembly pipe, a second assembly block and a valve stem, wherein 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 descaling 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; 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; When the grinding device is in use, the third assembly block is detachably connected to the output end of the rotating device; 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 also includes cleaning sponge, one end of which is installed in the liquid outlet.

4. The welding robot for construction sites according to claim 3, characterized in that: The valve stem includes a rotating shaft and an inverted U-shaped frame, 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.

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: The assembly frame is provided with a positioning hole, the rotating seat is provided with a limiting rod, 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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