Electric hoist outer cover welding work machine equipment and operation method thereof

Abstract

The invention belongs to the technical field of electric hoist welding, and particularly relates to electric hoist outer cover welding machine equipment and an operation method thereof.The electric hoist outer cover welding machine equipment comprises a base, an operation table is fixedly connected to the top of the base, and two mounting frames are symmetrically and slidably connected to the top of the operation table; according to the electric hoist outer cover welding work machine equipment and the operation method thereof, a hanging lug can be attracted by starting an L-shaped electromagnet, the stability of the hanging lug is kept by limiting an included angle in the L-shaped electromagnet, rigid collision generated when the hanging lug makes contact with a main body shell is avoided by arranging a first spring, and when an L-shaped plate rotates upwards, the L-shaped plate rotates downwards, so that the stability of the hanging lug is kept. When the pressure sensor detects pressure, the second hydraulic cylinder controls the hanging lug to move upwards at the moment, the hanging lug in the inclined state is gradually perpendicular along with reset pushing of the first spring, and when the pressure sensor does not detect the pressure, the hanging lug is tightly attached to the main body shell and is in the perpendicular state at the moment.

Description

Technical Field

[0001] This invention belongs to the field of electric hoist welding, specifically a welding machine and equipment for the outer casing of an electric hoist and its operating method. Background Technology

[0002] An electric hoist is a lifting device with an integrated electromechanical design. It consists of an electric motor, a transmission mechanism, and a drum or sprocket. It is installed on overhead cranes or gantry cranes and features small size, light weight, simple operation, and convenient use. It is used in industrial and mining enterprises, warehouses, docks, and other places. Currently, electric hoists are generally assembled by welding during the production and processing process.

[0003] The electric hoist cover consists of a cylindrical main body shell. Two butt-jointed lugs need to be welded to the top of the main body shell. During welding, the lugs need to contact the curved surface of the main body shell. Existing technology cannot guarantee that the lugs and the main body shell will remain perpendicular when they are tightly fitted, which affects the accuracy of the lug welding and results in inconsistent quality of the electric hoist cover. Secondly, after welding the lugs, it is not convenient to inspect the welding quality in a timely manner. If there is a phenomenon of incomplete welding, it is very easy for the electric hoist cover to disintegrate during use.

[0004] Therefore, the present invention provides a welding machine and equipment for the outer cover of an electric hoist and its operating method. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and address the issue that the lugs need to contact the curved surface of the main body shell during welding, current technologies cannot guarantee that the lugs and the main body shell remain perpendicular when tightly fitted, thus affecting the accuracy of the lug welding and resulting in inconsistent quality of the electric hoist cover. Furthermore, after welding the lugs, it is not convenient to promptly inspect the welding quality. If a false weld occurs, it can easily lead to the disintegration of the electric hoist cover during use. This invention proposes a welding machine and its operating method for electric hoist covers.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The electric hoist outer cover welding machine of the present invention includes a base, an operating table fixedly connected to the top of the base, two mounting brackets symmetrically slidably connected to the top of the operating table, two first hydraulic cylinders symmetrically fixedly connected inside the operating table, the output ends of the first hydraulic cylinders being fixedly connected to the mounting brackets, two welding robots symmetrically fixedly connected to the top of the base, a gantry frame fixedly connected to the top of the operating table, two second hydraulic cylinders symmetrically fixedly connected to the inner wall of the gantry frame, the output ends of the two second hydraulic cylinders being jointly fixedly connected to a sliding plate, the sliding plate being slidably connected to the gantry frame, a fixed platform fixedly connected to the bottom of the sliding plate, and a positioning component provided on the outer wall of the fixed platform.

[0007] Preferably, the positioning component includes two fixed frames, which are respectively fixedly installed on both sides of the fixed platform. A rotating shaft is fixedly connected to the inner wall of the fixed frame, and an L-shaped plate is rotatably connected to the outer wall of the rotating shaft. A positioning plate is fixedly connected to one side of the L-shaped plate, and an L-shaped electromagnet is fixedly connected to the inner wall of the L-shaped plate. A detection unit is provided at the bottom of the slide plate.

[0008] Preferably, the detection unit includes two mounting slots, which are symmetrically opened on the bottom of the slide plate. A plurality of first sliding shafts are equidistantly slidably connected to the top of the inner wall of the mounting slot. A top block is fixedly connected to the bottom of the first sliding shaft. A first spring is sleeved on the outer wall of the first sliding shaft. The top of the first spring is fixedly connected to the slide plate, and the bottom of the first spring is fixedly connected to the top block. A pressure sensor is fixedly connected to the top of the inner wall of the mounting slot.

[0009] Preferably, the outer wall of the L-shaped plate is provided with a positioning groove, and two sets of third hydraulic cylinders are symmetrically fixedly connected to the bottom of the slide plate. Each set of third hydraulic cylinders includes two cylinders, and the output ends of the two sets of third hydraulic cylinders are fixedly connected with insert plates. The two insert plates respectively fit into the inner walls of the two positioning grooves.

[0010] Preferably, the inner wall of the fixed platform is symmetrically slidably connected with two sets of limiting blocks, each set of limiting blocks includes several blocks, the bottom of the two sets of limiting blocks is fixedly connected with a second sliding shaft, the two sets of second sliding shafts are slidably connected to the fixed platform, the bottom of the two sets of second sliding shafts penetrates the fixed platform and is jointly fixedly connected to a detection platform, and the inner wall of the detection platform is symmetrically provided with two sets of inspection components.

[0011] Preferably, the inspection assembly includes a plurality of first push rods, which are equidistantly slidably connected to the inner wall of the inspection table. One end of each first push rod penetrates the inspection table, and the other end of each first push rod is fixedly connected to a push block. A second spring is sleeved on the outer wall of each first push rod, with one end of the second spring fixedly connected to the push block and the other end of the second spring fixedly connected to the inspection table. A second push rod is slidably connected to the inner wall of each first push rod, and a third spring is fixedly connected inside each first push rod, with one end of the third spring fixedly connected to the second push rod. A drive unit is provided on the outer wall of the inspection table.

[0012] Preferably, the drive unit includes a second motor, which is fixedly installed on the outer wall of the testing platform. The output end of the second motor extends into the interior of the testing platform and is fixedly connected to a lead screw. The lead screw is rotatably connected to the testing platform. The outer wall of the lead screw is connected to a top plate through a lead screw and nut pair. The top plate is slidably connected to the testing platform. Both sides of the top plate are set as symmetrical inclined surfaces.

[0013] Preferably, a first motor is fixedly connected to one side of the mounting bracket, a clamping plate is fixedly connected to the output end of the first motor, and a rubber pad is fixedly connected to the outer wall of the clamping plate.

[0014] Preferably, the top of the operating table is slidably connected to a protrusion, and the bottom of the protrusion is symmetrically and fixedly connected to two fourth springs, the bottoms of the two fourth springs being fixedly connected to the operating table.

[0015] An operating method for a welding machine for an electric hoist cover, applicable to the aforementioned welding machine for an electric hoist cover, comprising the following steps: S1: Place the main body shell of the electric hoist between two clamping plates, and control the two clamping plates to move closer to each other through two first hydraulic cylinders to clamp and fix the main body shell in the middle. S2: Place the hook ear against the inner corner of the L-shaped electromagnet, activate the L-shaped electromagnet to attract the hook ear, and control the hook ear to move downward through the second hydraulic cylinder to splice it with the main body shell; S3: Control the welding robot to weld the connection between the lug and the main body shell, and check whether there is a poor weld between the lug and the main body shell through the inspection component.

[0016] The beneficial effects of this invention are as follows: 1. The electric hoist outer casing welding machine and its operating method described in this invention can attract the hanging ear by activating the L-shaped electromagnet. The stability of the hanging ear is maintained by the limiting of the inner angle of the L-shaped electromagnet. The first spring prevents hard collision when the hanging ear contacts the main body shell. When the L-shaped plate rotates upward, the pressure sensor detects pressure. At this time, the second hydraulic cylinder controls the slide plate to make a slight upward adjustment, which drives the hanging ear to move upward. As the first spring returns to its original position, the hanging ear, which is in an inclined state, gradually becomes vertical. When the pressure sensor no longer detects pressure, the hanging ear is in close contact with the main body shell and is in a vertical state.

[0017] 2. The electric hoist outer cover welding machine and its operation method described in this invention control the first and second push rods at different positions to impact outward through the drive unit, and adjust the position of the detection table through the second hydraulic cylinder to impact the hanging ears at different heights. The multi-directional impact can simulate multi-directional loads. If the weld has defects such as good local bonding and uneven overall bonding, a single-position hammer blow may be missed because the force direction does not reach the defect surface, while multi-directional impact can force the defect surface to peel off.

[0018] 3. The electric hoist outer casing welding machine and its operating method described in this invention control the rotation of the welded main body shell and the hanging ear by the first motor. If there is a poor weld at the weld between the hanging ear and the main body shell, the hanging ear will be peeled off from the main body shell under the impact of the protrusion. Then, the main body shell and the hanging ear are rotated in opposite directions by the first motor, so that the protrusion impacts the other side of the hanging ear. The machine detects whether there is a poor weld between the hanging ear and the main body shell under the impact in different directions.

[0019] 4. The electric hoist outer cover welding machine and its operation method described in this invention use an L-shaped electromagnet to attract the hanging ear, and a second hydraulic cylinder controls the L-shaped electromagnet to move upward to pull the attracted hanging ear. The load-bearing capacity of the hanging ear after welding is detected by adjusting the attraction force of the L-shaped electromagnet. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the base of the present invention used in conjunction with the gantry frame; Figure 2 This is a perspective view of the gantry frame and the sliding plate of the present invention in use; Figure 3 This is an exploded view of the slide plate and control panel of the present invention in use; Figure 4 This is an exploded view of the operating table and protrusions of the present invention in use; Figure 5This is a cross-sectional view of the operating table and sliding plate of the present invention in use; Figure 6 This is a cross-sectional view of the sliding plate and L-shaped plate of the present invention in use; Figure 7 This is an exploded view of the first and second push rods of the present invention used in conjunction. Figure 8 This is a cross-sectional view of the second push rod of the present invention used in conjunction with the top plate; Figure 9 This is an exploded view of the fixed platform and the testing platform of the present invention used together; Figure 10 This is a perspective view of the L-shaped plate and L-shaped electromagnet used in conjunction with the present invention; Figure 11 This is a perspective view of the top block and L-shaped plate of the present invention in use.

[0022] In the diagram: 1. Base; 2. Welding robot; 3. Operating table; 4. First hydraulic cylinder; 5. Mounting frame; 6. First motor; 7. Clamping plate; 8. Rubber pad; 9. Gantry frame; 10. Second hydraulic cylinder; 11. Slide plate; 12. Fixed platform; 13. Fixed frame; 14. Rotating shaft; 15. L-shaped plate; 16. L-shaped electromagnet; 17. Positioning plate; 18. First sliding shaft; 19. Top block; 20. First spring; 21. Pressure sensor; 22. Positioning groove; 23. Third hydraulic cylinder; 24. Insert plate; 25. Mounting groove; 26. Limiting block; 27. Second sliding shaft; 28. Detection table; 29. ​​First push rod; 30. Push block; 31. Second spring; 32. Third spring; 33. Second push rod; 34. Second motor; 35. Lead screw; 36. Top plate; 37. Fourth spring; 38. Protrusion. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 11As shown, the present invention provides a technical solution: a welding machine for an electric hoist cover, comprising a base 1, an operating platform 3 fixedly connected to the top of the base 1, two mounting brackets 5 symmetrically slidably connected to the top of the operating platform 3, two first hydraulic cylinders 4 symmetrically fixedly connected inside the operating platform 3, the output ends of the first hydraulic cylinders 4 being fixedly connected to the mounting brackets 5, two welding robots 2 symmetrically fixedly connected to the top of the base 1, a gantry frame 9 fixedly connected to the top of the operating platform 3, two second hydraulic cylinders 10 symmetrically fixedly connected to the inner wall of the gantry frame 9, the output ends of the two second hydraulic cylinders 10 being jointly fixedly connected to a slide plate 11, the slide plate 11 being slidably connected to the gantry frame 9, a fixed platform 12 fixedly connected to the bottom of the slide plate 11, and a positioning component provided on the outer wall of the fixed platform 12; a first motor 6 fixedly connected to one side of the mounting bracket 5, a clamping plate 7 fixedly connected to the output end of the first motor 6, and a rubber pad 8 fixedly connected to the outer wall of the clamping plate 7; the positioning component includes two fixed brackets 13, the two fixed brackets 13 being respectively fixedly installed on both sides of the fixed platform 12, and a rotating shaft 14 fixedly connected to the inner wall of the fixed bracket 13. An L-shaped plate 15 is rotatably connected to the outer wall of the rotating shaft 14. A positioning plate 17 is fixedly connected to one side of the L-shaped plate 15. An L-shaped electromagnet 16 is fixedly connected to the inner wall of the L-shaped plate 15. A detection unit is provided at the bottom of the slide plate 11. The detection unit includes two mounting slots 25, which are symmetrically opened at the bottom of the slide plate 11. Several first sliding shafts 18 are equidistantly slidably connected to the top of the inner wall of the mounting slots 25. A top block 19 is fixedly connected to the bottom of the first sliding shaft 18. A first spring 20 is sleeved on the outer wall of the first sliding shaft 18. The top of the first spring 20... The plate 11 is fixedly connected to the slide plate 11. The bottom of the first spring 20 is fixedly connected to the top block 19. Under the action of the first spring 20, the top block 19 presses against the top of the L-shaped plate 15. The top of the inner wall of the mounting groove 25 is fixedly connected to the pressure sensor 21. The outer wall of the L-shaped plate 15 is provided with a positioning groove 22. The bottom of the slide plate 11 is symmetrically fixedly connected to two sets of third hydraulic cylinders 23. Each set of third hydraulic cylinders 23 contains two cylinders. The output ends of the two sets of third hydraulic cylinders 23 are fixedly connected to the insert plates 24. The two insert plates 24 respectively fit against the inner walls of the two positioning grooves 22.

[0025] Through the above technical solution, the third hydraulic cylinder 23 controls the insert plate 24 to move out of the positioning groove 22, placing the electric hoist main body shell between the two clamping plates 7. The two first hydraulic cylinders 4 control the two mounting brackets 5 to move closer to each other, causing the two clamping plates 7 to move closer to each other. The two clamping plates 7 clamp and fix the electric hoist main body shell in the middle. The rubber pads 8 provided can increase the friction between the clamping plates 7 and the main body shell, improving the clamping and fixing effect. Starting the first motor 6 can drive the clamping plates 7 to rotate, causing the main body shell to rotate, which is beneficial for welding the main body shell. After adjusting the position, place the two hanging ears on the two L-shaped plates 15 respectively, and align the hanging ears with the inner angle of the L-shaped electromagnet 16. Activating the L-shaped electromagnet 16 allows it to attract the hanging ears. The positioning plate 17 ensures that the L-shaped plate 15 and the hanging ears are perpendicular. The second hydraulic cylinder 10 controls the sliding plate 11 to move downwards, causing the fixing platform 12 to move downwards, thus moving the L-shaped plate 15 and the hanging ears downwards. When the hanging ears press against the arc surface of the main body shell, the pressure from the main body shell causes the hanging ears to rotate, driving the L-shaped electromagnet 16 and the L-shaped plate 16 to rotate. The L-shaped plate 15 rotates around the pivot 14. As the L-shaped plate 15 rotates, it pushes the top block 19 upwards, causing the first sliding shaft 18 to move upwards and press against the first spring 20. This prevents a hard collision when the hanging ear contacts the main body shell. When the L-shaped plate 15 rotates upwards, the pressure sensor 21 detects pressure. At this time, the second hydraulic cylinder 10 controls the slide plate 11 to make a slight upward adjustment, causing the hanging ear to move upwards. As the first spring 20 resets, the hanging ear, which was in a tilted state, gradually becomes vertical. When the pressure sensor 21 no longer detects pressure, at this time... The upper half of the L-shaped plate 15 is in a horizontal state, and the hanging ear is close to the main body shell and in a vertical state. The insertion plate 24 is inserted into the positioning groove 22 by the third hydraulic cylinder 23 to keep the L-shaped plate 15 and the hanging ear in a stable position. The welding robot 2 performs preliminary welding and fixing at the connection between the hanging ear and the main body shell. Then the magnetic force of the L-shaped electromagnet 16 is turned off, and the sliding plate 11 is moved upward by the second hydraulic cylinder 10, which drives the fixing platform 12 and the L-shaped plate 15 away from the hanging ear. The welding robot 2 performs complete welding at the connection between the hanging ear and the main body shell again.

[0026] Specifically, two sets of limiting blocks 26 are symmetrically slidably connected to the inner wall of the fixed platform 12. Each set of limiting blocks 26 contains several blocks. The bottom of each set of limiting blocks 26 is fixedly connected to a second sliding shaft 27. Both sets of second sliding shafts 27 are slidably connected to the fixed platform 12. The bottom of each set of second sliding shafts 27 passes through the fixed platform 12 and is jointly fixedly connected to a testing platform 28. Two sets of inspection components are symmetrically arranged on the inner wall of the testing platform 28. The inspection components include several first push rods 29. The several first push rods 29 are equidistantly slidably connected to the inner wall of the testing platform 28. One end of the first push rod 29 passes through the testing platform 28, and the other end of the first push rod 29 is fixedly connected to a push block 30. A second spring 31 is sleeved on the outer wall of the first push rod 29. One end of the second spring 31... The second spring 31 is fixedly connected to the push block 30, and the other end of the second spring 31 is fixedly connected to the detection table 28. The inner wall of the first push rod 29 is slidably connected to the second push rod 33. The inside of the first push rod 29 is fixedly connected to the third spring 32, and one end of the third spring 32 is fixedly connected to the second push rod 33. The outer wall of the detection table 28 is provided with a drive unit. The drive unit includes a second motor 34, which is fixedly installed on the outer wall of the detection table 28. The output end of the second motor 34 extends into the inside of the detection table 28 and is fixedly connected to a lead screw 35. The lead screw 35 is rotatably connected to the detection table 28. The outer wall of the lead screw 35 is connected to a top plate 36 through a lead screw and nut pair. The top plate 36 is slidably connected to the detection table 28. Both sides of the top plate 36 are set as symmetrical inclined surfaces.

[0027] Through the above technical solution, after the hanging ear is welded to the main body shell, the second hydraulic cylinder 10 controls the sliding plate 11 to move downward, driving the inspection table 28 to move downward. Through the set second sliding shaft 27, the inspection table 28 can be close to the root of the hanging ear. The second motor 34 is started, driving the lead screw 35 to rotate, controlling the top plate 36 to move back and forth left and right within the inspection table 28. When the inclined surface of the outer wall of the top plate 36 presses against the push block 30, the push block 30 moves under the push of the inclined surface of the outer wall of the top plate 36, driving the first push rod 29 and the second push rod 33 to move outward, so that the second push rod 33 impacts the root of the hanging ear. When the second push rod 33 is pressed against the hanging ear, the second push rod 33 slides within the first push rod 29, pressing the third spring 32. Through the impact of the second push rod 33 on the root of the hanging ear, the hanging ear and the main body shell are checked for poor welding. At the same time as the push block 30 moves, the second spring 31 is pressed. When the top plate 36 moves away from the push block 30, the second spring 31... Under the action of the third spring 32, the first push rod 29 and the second push rod 33 are reset. As the top plate 36 continues to move, the first push rod 29 and the second push rod 33 at another location move outward to perform impact detection at different positions of the hanging ear root. In conjunction with the second hydraulic cylinder 10, the slide plate 11 is controlled to move upward, causing the detection platform 28 to move upward, thereby causing the first push rod 29 and the second push rod 33 to impact different positions of the hanging ear at different heights. The multi-directional impact method can simulate multi-directional loads. If there are defects in the weld, such as good local bonding but uneven overall bonding, a single-position hammer blow may be missed because the force direction does not reach the defect surface. Multi-directional impact can force the defect surface to peel off. After impact testing on the welded hanging ear, the hanging ear is attracted again by the L-shaped electromagnet 16. The L-shaped electromagnet 16 is controlled to move upward by the second hydraulic cylinder 10 to pull the attracted hanging ear. By adjusting the attraction force of the L-shaped electromagnet 16, the load-bearing capacity of the welded hanging ear is tested.

[0028] Specifically, the top of the operating table 3 is slidably connected to a protrusion 38, and the bottom of the protrusion 38 is symmetrically and fixedly connected to two fourth springs 37, the bottom of the two fourth springs 37 being fixedly connected to the operating table 3.

[0029] Through the above technical solution, the second hydraulic cylinder 10 controls the detection platform 28 to move away from the hanging ear. By starting the first motor 6, the clamping plate 7 is driven to rotate, causing the main body shell and the hanging ear to rotate in the clamped state. When the hanging ear rotates to the point close to the protrusion 38, it presses against the inclined surface of the top of the protrusion 38, pushing the protrusion 38 to move downward and pressing the fourth spring 37. This tests the pressure-bearing effect of the hanging ear under large-area impact. If there is a poor weld at the weld between the hanging ear and the main body shell, the hanging ear will be peeled off from the main body shell under the impact of the protrusion 38. Then, the first motor 6 controls the main body shell and the hanging ear to rotate in opposite directions, so that the protrusion 38 impacts the other side of the hanging ear. This tests whether there is a poor weld between the hanging ear and the main body shell under impact in different directions.

[0030] An operating method for a welding machine for an electric hoist cover, applicable to the aforementioned welding machine for an electric hoist cover, comprising the following steps: S1: Place the main body shell of the electric hoist between the two clamping plates 7, and control the two clamping plates 7 to move closer to each other through the two first hydraulic cylinders 4 to clamp and fix the main body shell in the middle. S2: Place the hanging ear against the inner corner of the L-shaped electromagnet 16, activate the L-shaped electromagnet 16 to attract the hanging ear, and control the hanging ear to move downward through the second hydraulic cylinder 10 to splice it with the main body shell. S3: Control welding robot 2 to weld the connection between the lug and the main body shell, and check whether there is a false weld between the lug and the main body shell through the inspection component.

[0031] In use, the third hydraulic cylinder 23 controls the insert plate 24 to move out of the positioning slot 22, placing the main body shell of the electric hoist between the two clamping plates 7. The two first hydraulic cylinders 4 control the two mounting brackets 5 to move closer together, causing the two clamping plates 7 to move closer together, clamping and fixing the main body shell in the middle. The rubber pads 8 increase the friction between the clamping plates 7 and the main body shell, improving the clamping and fixing effect. Starting the first motor 6 drives the clamping plates 7 to rotate, causing the main body shell to rotate and adjust the welding position of the main body shell. The two hanging ears are placed at the two L-shaped plates 15 respectively, and the hanging ears are attached to the inner angle of the L-shaped electromagnet 16. Activating the L-shaped electromagnet 16 can attract the hanging ears, and the positioning plate... 17. Position the L-shaped plate 15 perpendicular to the hanging ear. Control the sliding plate 11 downwards via the second hydraulic cylinder 10, causing the fixed platform 12 to move downwards, thus moving the L-shaped plate 15 and the hanging ear downwards. When the hanging ear presses against the arc surface of the main body shell, the hanging ear rotates under the pressure of the main body shell, causing the L-shaped electromagnet 16 and the L-shaped plate 15 to rotate around the pivot 14. Simultaneously, the L-shaped plate 15 rotates, pushing the top block 19 upwards, causing the first sliding shaft 18 to move upwards and pressing the first spring 20. This prevents a hard collision when the hanging ear contacts the main body shell. When the L-shaped plate 15 rotates upwards, the pressure sensor 21 detects pressure. At this time, the second hydraulic cylinder 10 controls the sliding plate 11 to make a slight upward adjustment, causing the hanging ear to move upwards, and with the first spring... The reset push of 20 gradually verticalizes the hanging ear, which is in a tilted state. When the pressure sensor 21 detects no pressure, the upper part of the L-shaped plate 15 is in a horizontal state, and the hanging ear is in a vertical state and close to the main body shell. The third hydraulic cylinder 23 controls the insertion plate 24 to be inserted into the positioning groove 22, keeping the L-shaped plate 15 and the hanging ear in a stable position. The welding robot 2 performs preliminary welding and fixation at the connection between the hanging ear and the main body shell. Then, the magnetic force of the L-shaped electromagnet 16 is turned off, and the second hydraulic cylinder 10 controls the slide plate 11 to move upward, driving the fixing platform 12 and the L-shaped plate 15 away from the hanging ear. The welding robot 2 performs complete welding at the connection between the hanging ear and the main body shell again. The second hydraulic cylinder 10 controls the detection platform 28 to move away from the hanging ear, and the start-up... The first motor 6 drives the clamping plate 7 to rotate, causing the main body shell and the hanging ear to rotate while being clamped. When the hanging ear rotates to near the protrusion 38, it presses against the inclined surface at the top of the protrusion 38, pushing the protrusion 38 downward and compressing the fourth spring 37. This tests the pressure-bearing effect of the hanging ear under large-area impact. If there is a poor weld at the joint between the hanging ear and the main body shell, the hanging ear will be peeled off from the main body shell under the impact of the protrusion 38. Then, the first motor 6 controls the main body shell and the hanging ear to rotate in opposite directions, causing the protrusion 38 to impact the other side of the hanging ear. This tests whether there is a poor weld between the hanging ear and the main body shell under impact from different directions. After welding the hanging ear and the main body shell, the second hydraulic cylinder 10 controls the sliding plate 11 to move downward, driving the testing table 28 downward.By using the second sliding shaft 27, the testing platform 28 can be brought close to the root of the hanging ear. The second motor 34 is started, driving the lead screw 35 to rotate, controlling the top plate 36 to move back and forth within the testing platform 28. When the inclined surface of the outer wall of the top plate 36 presses against the push block 30, the push block 30 moves under the push of the inclined surface of the outer wall of the top plate 36, driving the first push rod 29 and the second push rod 33 to move outward, so that the second push rod 33 impacts the root of the hanging ear. When the second push rod 33 is pressed against the hanging ear, the second push rod 33 slides within the first push rod 29, pressing the third spring 32. Through the impact of the second push rod 33 on the root of the hanging ear, the presence of a poor weld between the hanging ear and the main body shell is detected. While the push block 30 moves, it presses the second spring 31. When the top plate 36 moves away from the push block 30, under the action of the second spring 31 and the third spring 32, the first push rod 29 and the second push rod 33 reciprocate. As the top plate 36 continues to move, the first push rod 29 and the second push rod 33 at another location move outward, impacting different positions at the root of the hanging ear. In conjunction with the second hydraulic cylinder 10, the sliding plate 11 moves upward, causing the testing platform 28 to move upward, further impacting the first push rod 29 and the second push rod 33 at different heights of the hanging ear. This multi-directional impact method can simulate multi-directional loads. If the weld has defects such as good local bonding but uneven overall bonding, a single-position hammer blow may miss the defect because the force direction does not reach the defect surface. Multi-directional impact can force the defect surface to peel off. After impact testing of the welded hanging ear, the hanging ear is again attracted by the L-shaped electromagnet 16. The second hydraulic cylinder 10 controls the L-shaped electromagnet 16 to move upward, pulling the attracted hanging ear. By adjusting the attraction force of the L-shaped electromagnet 16, the load-bearing capacity of the welded hanging ear is tested.

[0032] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0033] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding machine for the outer casing of an electric hoist, characterized in that: The system includes a base (1), an operating table (3) fixedly connected to the top of the base (1), two mounting brackets (5) symmetrically slidably connected to the top of the operating table (3), two first hydraulic cylinders (4) symmetrically fixedly connected inside the operating table (3), the output end of the first hydraulic cylinders (4) fixedly connected to the mounting brackets (5), two welding robots (2) symmetrically fixedly connected to the top of the base (1), a gantry frame (9) fixedly connected to the top of the operating table (3), two second hydraulic cylinders (10) symmetrically fixedly connected to the inner wall of the gantry frame (9), the output ends of the two second hydraulic cylinders (10) are jointly fixedly connected to a slide plate (11), the slide plate (11) is slidably connected to the gantry frame (9), a fixed platform (12) is fixedly connected to the bottom of the slide plate (11), and a positioning component is provided on the outer wall of the fixed platform (12).

2. The welding machine for an electric hoist casing according to claim 1, characterized in that: The positioning assembly includes two fixed frames (13), which are respectively fixedly installed on both sides of the fixed platform (12). A rotating shaft (14) is fixedly connected to the inner wall of the fixed frame (13), and an L-shaped plate (15) is rotatably connected to the outer wall of the rotating shaft (14). A positioning plate (17) is fixedly connected to one side of the L-shaped plate (15), and an L-shaped electromagnet (16) is fixedly connected to the inner wall of the L-shaped plate (15). A detection unit is provided at the bottom of the sliding plate (11).

3. The welding machine for an electric hoist casing according to claim 2, characterized in that: The detection unit includes two mounting slots (25), which are symmetrically opened at the bottom of the slide plate (11). Several first sliding shafts (18) are equidistantly slidably connected to the top of the inner wall of the mounting slot (25). A top block (19) is fixedly connected to the bottom of the first sliding shaft (18). A first spring (20) is sleeved on the outer wall of the first sliding shaft (18). The top of the first spring (20) is fixedly connected to the slide plate (11), and the bottom of the first spring (20) is fixedly connected to the top block (19). A pressure sensor (21) is fixedly connected to the top of the inner wall of the mounting slot (25).

4. The electric hoist outer cover welding machine according to claim 3, characterized in that: The outer wall of the L-shaped plate (15) is provided with a positioning groove (22). The bottom of the sliding plate (11) is symmetrically fixedly connected with two sets of third hydraulic cylinders (23). Each set of third hydraulic cylinders (23) contains two cylinders. The output ends of the two sets of third hydraulic cylinders (23) are fixedly connected with insert plates (24). The two insert plates (24) respectively fit into the inner walls of the two positioning grooves (22).

5. The welding machine for an electric hoist casing according to claim 4, characterized in that: The inner wall of the fixed platform (12) is symmetrically slidably connected with two sets of limiting blocks (26). Each set of limiting blocks (26) contains several blocks. The bottom of each set of limiting blocks (26) is fixedly connected with a second sliding shaft (27). Both sets of second sliding shafts (27) are slidably connected to the fixed platform (12). The bottom of each set of second sliding shafts (27) passes through the fixed platform (12) and is fixedly connected to a detection platform (28). The inner wall of the detection platform (28) is symmetrically provided with two sets of inspection components.

6. The welding machine for an electric hoist casing according to claim 5, characterized in that: The inspection assembly includes several first push rods (29), which are equidistantly slidably connected to the inner wall of the inspection table (28). One end of each first push rod (29) passes through the inspection table (28), and the other end of each first push rod (29) is fixedly connected to a push block (30). A second spring (31) is sleeved on the outer wall of each first push rod (29). One end of the second spring (31) is fixedly connected to the push block (30), and the other end of the second spring (31) is fixedly connected to the inspection table (28). A second push rod (33) is slidably connected to the inner wall of each first push rod (29). A third spring (32) is fixedly connected inside each first push rod (29). One end of the third spring (32) is fixedly connected to the second push rod (33). A drive unit is provided on the outer wall of the inspection table (28).

7. The welding machine for an electric hoist casing according to claim 6, characterized in that: The drive unit includes a second motor (34), which is fixedly installed on the outer wall of the test platform (28). The output end of the second motor (34) extends into the interior of the test platform (28) and is fixedly connected to a lead screw (35). The lead screw (35) is rotatably connected to the test platform (28). The outer wall of the lead screw (35) is connected to a top plate (36) through a lead screw nut pair. The top plate (36) is slidably connected to the test platform (28). Both sides of the top plate (36) are set as symmetrical inclined surfaces.

8. The welding machine for an electric hoist casing according to claim 7, characterized in that: A first motor (6) is fixedly connected to one side of the mounting bracket (5), and a clamping plate (7) is fixedly connected to the output end of the first motor (6). A rubber pad (8) is fixedly connected to the outer wall of the clamping plate (7).

9. The welding machine for an electric hoist casing according to claim 8, characterized in that: The top of the operating table (3) is slidably connected to a protrusion (38), and the bottom of the protrusion (38) is symmetrically fixedly connected to two fourth springs (37), the bottom of the two fourth springs (37) being fixedly connected to the operating table (3).

10. An operating method for an electric hoist cover welding machine, the operating method being applicable to the electric hoist cover welding machine described in claim 9, characterized in that: The steps for this operation are as follows: S1: Place the main body shell of the electric hoist between two clamping plates (7), and control the two clamping plates (7) to move closer to each other through two first hydraulic cylinders (4) to clamp and fix the main body shell in the middle; S2: Place the hanging ear against the inner corner of the L-shaped electromagnet (16), start the L-shaped electromagnet (16) to attract the hanging ear, and control the hanging ear to move downward through the second hydraulic cylinder (10) to splice it with the main body shell; S3: Control the welding robot (2) to weld the connection between the ear and the main shell, and check whether there is a false weld between the ear and the main shell through the inspection component.

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