A mobile platform applied to weighbridge welding

Abstract

The utility model relates to mobile platform technology field of weighbridge welding, and disclose a kind of mobile platform applied to weighbridge welding, including placing table, the side wall of placing table is respectively fixedly installed with first motor and first limit rod, the output shaft outer side of first motor is fixedly sleeved with first screw rod, the outer wall of first screw rod is provided with workbench, the outer wall of workbench is respectively fixedly installed with second motor and second limit rod, rotate disc is rotated by fourth motor drive, reciprocating sliding is driven connecting rod push-pull guide block, continuous telescopic corrugated telescopic pipe extrusion, mechanical rotary kinetic energy is converted into reciprocating suction and exhaust power, automatic suction flue gas when welding, welding slag is purged weld residual during non-welding period, avoid slag inclusion, incomplete penetration and other defects, prevent flue gas pollution workshop, wear precision component simultaneously, guarantee weld forming quality, realize flue gas temporary storage concentration with gas cylinder, complete welding auxiliary integrated operation, improve welding automation level and production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of mobile platforms for weighbridge welding, specifically a mobile platform applied to weighbridge welding. Background Technology

[0002] A weighbridge, also known as a truck scale, is a large weighing scale set on the ground. It is usually used to weigh the tonnage of trucks and is the main weighing equipment used by factories, mines, and businesses for measuring bulk goods.

[0003] During the welding process of existing weighbridges, due to the large overall size span and complex weld seam distribution, a large amount of welding fumes and high-temperature welding slag are continuously generated during the welding operation. Welding residues are very easy to adhere to the weld surface, which can easily cause welding defects such as slag inclusion and incomplete penetration, seriously affecting the welding strength and forming accuracy of the weighbridge steel structure. Therefore, we have launched a mobile platform for weighbridge welding. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a mobile platform for weighbridge welding, which has the advantages of fume extraction and slag removal, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a mobile platform for welding weighbridges, comprising a placement platform, a first motor and a first limiting rod fixedly installed on the side wall of the placement platform, a first lead screw fixedly sleeved on the outer edge of the output shaft of the first motor, a worktable provided on the outer wall of the first lead screw, a second motor and a second limiting rod fixedly installed on the outer wall of the worktable, a second lead screw fixedly sleeved on the outer edge of the output shaft of the second motor, a slider provided on the outer wall of the second lead screw, a third motor and a third limiting rod fixedly installed on the outer wall of the slider, a third lead screw fixedly sleeved on the outer edge of the output shaft of the third motor, a fixing plate provided on the outer wall of the third lead screw, and a welder and a fourth motor fixedly mounted on the outer wall of the fixing plate. The mobile platform is equipped with a welder and a welding head-matching linked air supply and purging assembly for completing automated welding operations of weighbridge components.

[0006] As a preferred technical solution of this utility model: a turntable is fixedly sleeved on the outer edge of the output shaft of the fourth motor, a connecting rod is provided on the outer wall of the turntable, a guide box is fixedly installed on the outer wall of the welder, a guide block and a corrugated telescopic tube are respectively provided on the inner wall of the guide box, a first pipe is provided on the outer wall of the corrugated telescopic tube, a first one-way valve is installed on the outer wall of the first pipe, an air nozzle is installed at the end of the first pipe away from the corrugated telescopic tube, a filter is installed on the inner wall of the air nozzle, a second pipe is provided at the end of the corrugated telescopic tube away from the first pipe, a first solenoid valve is installed on the outer wall of the second pipe, a nozzle is installed at the end of the second pipe away from the corrugated telescopic tube, a storage bottle is fixedly assembled on the outer wall of the fixed plate, a connecting pipe is provided on the outer wall of the storage bottle, a second solenoid valve is installed on the outer wall of the connecting pipe, a pressure gauge and a connector are respectively installed on the outer wall of the storage bottle, and a third solenoid valve is installed on the outer wall of the connector.

[0007] As a preferred technical solution of this utility model: there are two of each of the first motor, the first lead screw and the first limiting rod, and each of the first motor, the first lead screw and the first limiting rod constitutes a driving component. The two driving components are respectively disposed on both sides of the outer wall of the placement table, and the two first limiting rods are respectively disposed through the inner wall of the worktable.

[0008] As a preferred embodiment of this utility model: the outer wall of the second limiting rod and the inner wall of the slider are connected through each other, the outer wall of the slider is slidably fitted to the outer wall of the second motor, the outer wall of the third limiting rod and the inner wall of the fixing plate are connected through each other, and the outer wall of the fixing plate is slidably fitted to the outer wall of the slider.

[0009] As a preferred technical solution of this utility model: one end of the connecting rod is rotatably connected to the outer wall of the turntable, and the other end of the connecting rod is rotatably connected to the outer wall of the guide block. The outer wall of the guide block is slidably fitted against the inner wall of the guide box. One end of the corrugated telescopic tube is connected to the bottom of the guide block, and the other end of the corrugated telescopic tube is connected to the inner wall of the guide box.

[0010] As a preferred technical solution of this utility model: one end of the first pipe is connected to the air inlet end of the corrugated expansion pipe, and the other end of the first pipe is connected to the air outlet end of the air nozzle. The air inlet end of the air nozzle is correspondingly set to the welding head of the welder. One end of the second pipe is connected to the air outlet end of the corrugated expansion pipe, and the other end of the second pipe is connected to the air inlet end of the nozzle. The nozzle is conical in shape, and the smaller diameter end of the conical nozzle is correspondingly set to the bottom of the welding head of the welder.

[0011] As a preferred technical solution of this utility model: one end of the connecting pipe is connected to the air outlet of the corrugated telescopic pipe, and the other end of the connecting pipe is connected to the air inlet of the storage bottle, and the connector is installed at the exhaust end of the storage bottle.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This mobile platform, used for welding weighbridges, is driven by a fourth motor to rotate a turntable, which in turn drives a connecting rod to push and pull guide blocks to slide back and forth, continuously extending and compressing the corrugated telescopic tube. This converts the mechanical rotational kinetic energy into reciprocating suction and exhaust power. During welding, it automatically draws in the flue gas and blows away residual weld slag during non-welding periods, avoiding defects such as slag inclusions and incomplete penetration. At the same time, it prevents the flue gas from polluting the workshop and wearing down precision components, ensuring the quality of weld formation. With the help of a gas storage cylinder, the flue gas can be temporarily stored and concentrated, completing the integrated welding auxiliary operation and improving the level of welding automation and production efficiency.

[0013] 2. This mobile platform for weighbridge welding operates synchronously with two sets of first motors on both sides of the platform, driving the first lead screw to rotate and feed the worktable longitudinally for coarse longitudinal adjustment. The second motor, in conjunction with the second lead screw, drives the slider to slide laterally to achieve alignment. Then, the third motor drives the third lead screw to adjust the height of the fixed plate and the welding head. The three-axis lead screw limit transmission works together to drive the welder to accurately align with the weld points of the weighbridge workpiece, meeting the multi-degree-of-freedom displacement adjustment requirements for all-round welding of large-size weighbridge steel structures.

[0014] 3. This mobile platform, used for weighbridge welding, is specifically designed for welding weighbridge components, solving problems such as weld slag and oxidation during the welding process, and is compatible with automated welding processes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the movable structure of this utility model; Figure 3 This is a schematic diagram of the extraction and cleaning structure of this utility model; Figure 4 This is a schematic diagram of the auxiliary structure of this utility model.

[0016] In the diagram: 1. Placement platform; 2. First motor; 3. First lead screw; 4. First limit rod; 5. Worktable; 6. Second motor; 7. Second lead screw; 8. Second limit rod; 9. Slider; 10. Third motor; 11. Third lead screw; 12. Third limit rod; 13. Fixing plate; 14. Welding device; 15. Fourth motor; 16. Turntable; 17. Connecting rod; 18. Guide box; 19. Guide block; 20. Corrugated telescopic tube; 21. First pipe; 22. First one-way valve; 23. Air nozzle; 24. Filter plate; 25. Second pipe; 26. First solenoid valve; 27. Nozzle; 28. Storage bottle; 29. ​​Connecting pipe; 30. Second solenoid valve; 31. Pressure gauge; 32. Connector; 33. Third solenoid valve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 - Figure 4 A mobile platform for welding weighbridges includes a placement platform 1. A first motor 2 and a first limiting rod 4 are fixedly installed on the side walls of the placement platform 1. A first lead screw 3 is fixedly sleeved on the outer edge of the output shaft of the first motor 2. A worktable 5 is provided on the outer wall of the first lead screw 3. A second motor 6 and a second limiting rod 8 are fixedly installed on the outer wall of the worktable 5. A second lead screw 7 is fixedly sleeved on the outer edge of the output shaft of the second motor 6. A slider 9 is provided on the outer wall of the second lead screw 7. A third motor 10 and a third limiting rod 12 are fixedly installed on the outer wall of the slider 9. A third lead screw 11 is fixedly sleeved on the outer edge of the output shaft of the third motor 10. A fixing plate 13 is provided on the outer wall of the third lead screw 11. A welder 14 and a fourth motor 15 are fixedly mounted on the outer wall of the fixing plate 13. The mobile platform is equipped with a welder 14 and a welding head-matching linkage air supply and blowing assembly for completing automated welding operations of weighbridge components. In the above structure, the first motor 2 drives the first lead screw 3 to rotate, and the rotation of the first lead screw 3 drives the worktable 5 to slide along the outer wall of the first limiting rod 4, thereby realizing the longitudinal movement of the worktable 5 relative to the placement platform 1; then the second motor 6 drives the second lead screw 7 to rotate, and the rotation of the second lead screw 7 drives the slider 9 to slide along the outer wall of the second limiting rod 8, thereby completing the lateral movement of the slider 9 relative to the worktable 5; subsequently, the third motor 10 drives the third lead screw 11 to rotate, and the rotation of the third lead screw 11 drives the fixing plate 13 to slide along the outer wall of the third limiting rod 12, thereby driving the welder 14 mounted on the fixing plate 13 to complete the height direction position adjustment, thereby realizing the multi-axis displacement of the welder 14 to adapt to the welding operations at different welding points of the weighbridge.

[0019] In a preferred embodiment: a turntable 16 is fixedly sleeved on the outer edge of the output shaft of the fourth motor 15; a connecting rod 17 is provided on the outer wall of the turntable 16; a guide box 18 is fixedly installed on the outer wall of the welder 14; a guide block 19 and a corrugated telescopic tube 20 are respectively provided on the inner wall of the guide box 18; a first pipe 21 is provided on the outer wall of the corrugated telescopic tube 20; a first one-way valve 22 is installed on the outer wall of the first pipe 21; an air nozzle 23 is installed at the end of the first pipe 21 away from the corrugated telescopic tube 20; and a filter is installed on the inner wall of the air nozzle 23. 24. A second pipe 25 is provided at the end of the corrugated expansion pipe 20 away from the first pipe 21. A first solenoid valve 26 is installed on the outer wall of the second pipe 25. A nozzle 27 is installed at the end of the second pipe 25 away from the corrugated expansion pipe 20. A storage bottle 28 is fixedly mounted on the outer wall of the fixing plate 13. A connecting pipe 29 is provided on the outer wall of the storage bottle 28. A second solenoid valve 30 is installed on the outer wall of the connecting pipe 29. A pressure gauge 31 and a connector 32 are respectively installed on the outer wall of the storage bottle 28. A third solenoid valve 33 is installed on the outer wall of the connector 32. In the above structure, the fourth motor 15 outputs a rotational torque to drive the turntable 16 to rotate continuously in a circular motion. The rotation of the turntable 16 drives the connecting rod 17, which is hinged to its outer wall, to perform a planar reciprocating oscillating motion. The connecting rod 17 pushes and pulls the guide block 19, causing the guide block 19 to slide reciprocally in a linear motion along the inner cavity of the guide box 18. The reciprocating motion of the guide block 19 alternately stretches and compresses the corrugated telescopic tube 20, periodically changing the inner cavity volume of the corrugated telescopic tube 20. When the volume of the corrugated telescopic tube 20 increases, forming a negative pressure, the first one-way valve 22 opens, and the first solenoid valve 26 and the second solenoid valve 30 close. The fumes generated at the welding station are drawn into the corrugated telescopic tube 20 through the nozzle 23, after the filter 24 intercepts the welding slag particles, and then along the first pipe 21. When the corrugated telescopic tube 20 is compressed, causing the inner cavity volume to decrease, the first one-way valve 22... When closed, the first solenoid valve 26 can be selectively opened, and the pressurized gas is delivered to the nozzle 27 along the second pipe 25 and ejected. The high-speed airflow sweeps away the weld slag adhering to the weld surface. In this state, the welder 14 is not performing welding work, so the gas ejected only acts to clean the area of ​​the welder 14 that needs to be welded. Alternatively, the second solenoid valve 30 can be opened, and the pressurized gas is introduced into the storage bottle 28 along the connecting pipe 29 to temporarily store the fumes. The pressure gauge 31 monitors the internal pressure of the storage bottle 28 in real time. After a certain amount of fumes accumulate in the storage bottle 28, the third solenoid valve 33 is opened, and a special pipe is connected to the external connection of the connector 32 to the fume purification equipment, etc., to discharge the waste gas inside the storage bottle 28. This is when the welder 14 is performing welding operations, so that its above-mentioned auxiliary mechanisms move synchronously with the welding bracket.

[0020] In a preferred embodiment: there are two first motors 2, two first lead screws 3 and two first limiting rods 4, and each first motor 2, first lead screw 3 and first limiting rod 4 constitutes a driving member. The two driving members are respectively disposed on both sides of the outer wall of the placement platform 1, and the two first limiting rods 4 are respectively disposed through the inner wall of the worktable 5. In the above structure, the first motors 2 on both sides operate synchronously, driving the first lead screws 3 on the corresponding sides to rotate synchronously. The two sets of first lead screws 3 jointly drive the worktable 5 to feed longitudinally. The worktable 5 slides through the outer wall of the two first limit rods 4. The two first limit rods 4 synchronously limit and guide the two sides of the worktable 5, counteracting the lateral force brought by the transmission of the first lead screws 3, suppressing the worktable 5 from shifting or jamming, and meeting the displacement requirements of continuous welding of the long steel structure weld of the weighbridge.

[0021] In a preferred embodiment: the outer wall of the second limiting rod 8 and the inner wall of the slider 9 are connected through each other, the outer wall of the slider 9 is slidably attached to the outer wall of the second motor 6, and the outer wall of the third limiting rod 12 and the inner wall of the fixing plate 13 are connected through each other, the outer wall of the fixing plate 13 and the outer wall of the slider 9 are slidably attached to each other. In the above structure, when the second motor 6 drives the second lead screw 7 to rotate and drive the slider 9 to feed laterally, the inner wall of the slider 9 slides through the body of the second limiting rod 8. The second limiting rod 8 provides circumferential constraint on the slider 9, and the slider 9 slides against the outer wall of the second motor 6 to prevent the slider 9 from twisting or deflecting. When the third motor 10 drives the third lead screw 11 to rotate and drive the fixed plate 13 to move up and down, the inner wall of the fixed plate 13 slides through the outer wall of the third limiting rod 12, and the fixed plate 13 slides against the side wall of the slider 9. The third limiting rod 12 restricts the fixed plate 13 from rotating and shaking, ensuring the stability of the welding head movement trajectory of the welder 14 and preventing the welding point from shifting during the weighbridge welding operation.

[0022] In a preferred embodiment: one end of the connecting rod 17 is rotatably connected to the outer wall of the turntable 16, and the other end of the connecting rod 17 is rotatably connected to the outer wall of the guide block 19. The outer wall of the guide block 19 is slidably fitted against the inner wall of the guide box 18. One end of the corrugated telescopic tube 20 is connected to the bottom of the guide block 19, and the other end of the corrugated telescopic tube 20 is connected to the inner wall of the guide box 18. In the above structure, the fourth motor 15 drives the turntable 16 to rotate continuously in a circular motion. The turntable 16 drives one end of the connecting rod 17 to move in a circular trajectory. The connecting rod 17 converts the circular motion into the linear reciprocating sliding of the guide block 19 by means of the rotating pairs at both ends. The guide block 19 pushes and pulls the corrugated telescopic tube 20 back and forth against the inner wall of the guide box 18, realizing the periodic expansion and compression of the inner cavity volume of the corrugated telescopic tube 20, and cyclically completing the negative pressure intake and pressurized exhaust actions. The mechanical transmission of the bracket provides power input for smoke extraction and air jet cleaning.

[0023] In a preferred embodiment: one end of the first pipe 21 is connected to the air inlet of the corrugated expansion pipe 20, and the other end of the first pipe 21 is connected to the air outlet of the air nozzle 23. The air inlet of the air nozzle 23 is correspondingly provided to the welding head of the welder 14. One end of the second pipe 25 is connected to the air outlet of the corrugated expansion pipe 20, and the other end of the second pipe 25 is connected to the air inlet of the nozzle 27. The nozzle 27 is conical in shape, and the smaller diameter end of the conical nozzle 27 is correspondingly provided to the bottom of the welding head of the welder 14. In the above structure, a negative pressure is formed by the volume expansion of the corrugated expansion tube 20. The negative pressure is transmitted to the air nozzle 23 facing the welding head through the first pipe 21, which draws out the fumes or external gases generated during the welding operation nearby. The filter 24 prevents the spattered welding slag particles from entering the pipeline. When the corrugated expansion tube 20 is compressed, the pressurized gas in the inner cavity is transported to the conical nozzle 27 along the second pipe 25. The converging structure of the conical nozzle accelerates the airflow. The high-speed airflow is directionally sprayed to the weld area below the welding head. Under non-welding conditions, the welding slag attached to the weld surface is blown away from the weld surface, realizing the collection of fumes and pre-cleaning of welding slag during the follow-up process of the welding bracket.

[0024] In a preferred embodiment: one end of the connecting pipe 29 is connected to the air outlet of the corrugated telescopic pipe 20, and the other end of the connecting pipe 29 is connected to the air inlet of the storage bottle 28, and the connector 32 is installed at the exhaust end of the storage bottle 28. In the above structure, after the second solenoid valve 30 is opened by the compression exhaust stroke through the corrugated telescopic tube 20, the pressurized gas carrying the fumes flows into the inner cavity of the storage bottle 28 along the connecting pipe 29 for temporary storage. The pressure gauge 31 collects the gas pressure inside the storage bottle 28 in real time. When the internal pressure reaches the preset threshold, the third solenoid valve 33 is opened, and the external fume purification equipment is connected through the connector 32 to discharge the welding waste gas accumulated inside the storage bottle 28 to the outside for treatment, so as to prevent the fumes from flowing back to the weighbridge welding operation area and reduce the fume pollution at the work station.

[0025] Working principle: First, before welding the weighbridge workpiece, two sets of first motors 2 on both sides of the placement platform 1 operate synchronously, driving two sets of first lead screws 3 to rotate synchronously. The rotation of the lead screws drives the worktable 5 to move longitudinally and smoothly along the outer wall of the first limit rod 4, achieving a rough adjustment of the overall longitudinal position of the worktable 5. Then, the second motor 6 drives the second lead screw 7 to rotate, driving the slider 9 to slide laterally along the outer wall of the second limit rod 8, completing the lateral alignment of the welding structure. Next, the third motor 10 drives the third lead screw 11 to rotate, driving the fixed plate 13 to slide vertically up and down along the outer wall of the third limit rod 12, thereby adjusting the welding head height of the welder 14. Through the three-axis purely mechanical lead screw limit transmission, the welding head height is adjusted. The welding device 14 is aligned with weld points at different positions and heights on the weighbridge workpiece to meet the omnidirectional welding displacement requirements of the large-size weighbridge steel structure. During the welding operation, as the welding device 14 moves and aligns with the support frame, the fourth motor 15 continuously drives the turntable 16 to rotate at a uniform speed. The turntable 16, through the hinged connecting rod 17, converts the rotation into a linear reciprocating thrust, continuously pushing and pulling the guide block 19 along the inner wall of the guide box 18 in a reciprocating linear sliding motion. The reciprocating sliding of the guide block 19 periodically stretches and compresses the corrugated expansion tube 20, causing the inner volume of the corrugated expansion tube 20 to continuously expand and contract alternately, forming a continuous and stable mechanical suction and compression cycle. When the volume of the corrugated expansion tube 20 expands, negative pressure is generated. During the intake phase, the first one-way valve 22 automatically opens, and the first solenoid valve 26 and the second solenoid valve 30 close synchronously. Welding fumes and suspended dust generated by the welding head during the welding operation are drawn in under negative pressure through the nozzle 23. The filter 24 inside the nozzle 23 intercepts and filters large particles of spatter and metal debris. Clean fumes are introduced into the corrugated expansion pipe 20 along the first pipe 21, achieving real-time, localized extraction of welding fumes and preventing fumes from spreading and polluting the work environment. When a single weld section is completed or the welder 14 is in a non-welding standby state, the corrugated expansion pipe 20 enters the compression exhaust stroke, reducing its internal volume and increasing its internal pressure. At this time, the first one-way valve 22 closes, cutting off the intake passage. The operator can then choose... The first solenoid valve 26 is opened, allowing the pressurized gas inside the corrugated expansion tube 20 to be transported along the second pipe 25 to the conical nozzle 27. After being converged and accelerated by the nozzle 27, a high-speed directional airflow is formed and sprayed onto the surface of the weld to be welded, thoroughly blowing away welding residue, loose welding slag and oxide scale in the early cooling stage, completing the pre-treatment cleaning of the weld and avoiding defects such as slag inclusion and incomplete penetration caused by residual welding slag in subsequent welding. At the same time, during the compression and exhaust process of the corrugated expansion tube 20, the second solenoid valve 30 can be opened to introduce the pressurized gas containing fumes into the storage bottle 28 through the connecting pipe 29 for sealed temporary storage. The pressure gauge 31 installed on the outside of the storage bottle 28 monitors the gas pressure inside the bottle in real time to avoid excessive internal pressure causing safety hazards.When the fumes inside the storage bottle 28 accumulate to a preset pressure threshold, the third solenoid valve 33 is opened. An external fume purification device is connected via connector 32 to uniformly export and purify the welding fumes accumulated inside the storage bottle 28, effectively preventing fume backflow and further optimizing the welding working environment.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile platform for welding weighbridges, comprising a placement platform (1), characterized in that: The side wall of the placement platform (1) is fixedly installed with a first motor (2) and a first limiting rod (4). The output shaft of the first motor (2) is fixedly sleeved with a first lead screw (3). The outer wall of the first lead screw (3) is provided with a worktable (5). The outer wall of the worktable (5) is fixedly installed with a second motor (6) and a second limiting rod (8). The output shaft of the second motor (6) is fixedly sleeved with a second lead screw (7). The outer wall of the second lead screw (7) is provided with a slider (9). The outer wall of the slider (9) is fixedly installed with a third motor (10) and a third limiting rod (12). The output shaft of the third motor (10) is fixedly sleeved with a third lead screw (11). The outer wall of the third lead screw (11) is provided with a fixing plate (13). The outer wall of the fixing plate (13) is fixedly assembled with a welder (14) and a fourth motor (15). The mobile platform is equipped with a welder (14) and a welding head-matched linkage air supply and blowing assembly to complete the automated welding operation of the weighbridge components.

2. The mobile platform for welding weighbridges according to claim 1, characterized in that: A turntable (16) is fixedly sleeved on the outer edge of the output shaft of the fourth motor (15). A connecting rod (17) is provided on the outer wall of the turntable (16). A guide box (18) is fixedly installed on the outer wall of the welder (14). A guide block (19) and a corrugated telescopic tube (20) are respectively provided on the inner wall of the guide box (18). A first pipe (21) is provided on the outer wall of the corrugated telescopic tube (20). A first one-way valve (22) is installed on the outer wall of the first pipe (21). An air nozzle (23) is installed at the end of the first pipe (21) away from the corrugated telescopic tube (20). A filter (24) is installed on the inner wall of the air nozzle (23). A second pipe (25) is provided at the end of the telescopic pipe (20) away from the first pipe (21). A first solenoid valve (26) is installed on the outer wall of the second pipe (25). A nozzle (27) is installed at the end of the second pipe (25) away from the corrugated telescopic pipe (20). A storage bottle (28) is fixedly mounted on the outer wall of the fixed plate (13). A connecting pipe (29) is provided on the outer wall of the storage bottle (28). A second solenoid valve (30) is installed on the outer wall of the connecting pipe (29). A pressure gauge (31) and a connector (32) are respectively installed on the outer wall of the storage bottle (28). A third solenoid valve (33) is installed on the outer wall of the connector (32).

3. The mobile platform for welding weighbridges according to claim 1, characterized in that: There are two of each of the first motor (2), the first lead screw (3) and the first limiting rod (4), and each of the first motor (2), the first lead screw (3) and the first limiting rod (4) forms a driving component. The two driving components are respectively set on both sides of the outer wall of the placement platform (1), and the two first limiting rods (4) are respectively connected to the inner wall of the worktable (5).

4. A mobile platform for welding weighbridges according to claim 1, characterized in that: The outer wall of the second limiting rod (8) is through the inner wall of the slider (9), the outer wall of the slider (9) is in contact with the outer wall of the second motor (6), the outer wall of the third limiting rod (12) is through the inner wall of the fixing plate (13), and the outer wall of the fixing plate (13) is in contact with the outer wall of the slider (9).

5. A mobile platform for welding weighbridges according to claim 2, characterized in that: One end of the connecting rod (17) is rotatably connected to the outer wall of the turntable (16), and the other end of the connecting rod (17) is rotatably connected to the outer wall of the guide block (19). The outer wall of the guide block (19) is slidably fitted against the inner wall of the guide box (18). One end of the corrugated telescopic tube (20) is connected to the bottom of the guide block (19), and the other end of the corrugated telescopic tube (20) is connected to the inner wall of the guide box (18).

6. A mobile platform for welding weighbridges according to claim 2, characterized in that: One end of the first pipe (21) is connected to the air inlet of the corrugated expansion pipe (20), and the other end of the first pipe (21) is connected to the air outlet of the air nozzle (23). The air inlet of the air nozzle (23) is correspondingly set to the welding head of the welder (14). One end of the second pipe (25) is connected to the air outlet of the corrugated expansion pipe (20), and the other end of the second pipe (25) is connected to the air inlet of the nozzle (27). The nozzle (27) is conical in shape, and the smaller diameter end of the conical nozzle (27) is correspondingly set to the bottom of the welding head of the welder (14).

7. A mobile platform for welding weighbridges according to claim 2, characterized in that: One end of the connecting pipe (29) is connected to the air outlet of the corrugated telescopic pipe (20), and the other end of the connecting pipe (29) is connected to the air inlet of the storage bottle (28). The connector (32) is installed at the exhaust end of the storage bottle (28).

Images