Elevator car bottom combined welding auxiliary device and splicing method thereof

Abstract

The present invention belongs to the field of combined welding of elevator car bottoms, and specifically is an auxiliary device for combined welding of elevator car bottoms and a splicing method thereof, comprising a stabilizing plate, a conveyor belt and a receiving frame, a plurality of hydraulic rods are vertically fixedly connected to the top surface of the stabilizing plate, the bottom ends of the plurality of hydraulic rods are fixedly connected to the outer frame of the conveyor belt, a plurality of groups of grabbing arms are fixedly connected to the outer side of the conveyor belt, each group of grabbing arms is arranged in parallel, the receiving frame is located on one side of the conveyor belt near the bottom end, the top surface of the receiving frame is arranged in an open manner, and a lifting module is arranged at the inner bottom end of the receiving frame, and is moved parallel to the bottom of the conveyor belt, and then the grabbing arm only needs to release the cross bar to allow the plurality of cross bars to be translated to the top of the base steel plate, because the plurality of groups of grabbing arms are arranged at equal distances, the transported cross bars are also placed at equal distances, through this arrangement, the function of quickly aligning the cross bars is realized, and when aligning the longitudinal bars, the same function can be achieved by rotating the base steel plate ninety degrees.

Description

Technical Field

[0001] The invention belongs to the field of elevator car bottom assembly welding, in particular to an elevator car bottom assembly welding auxiliary device and a splicing method thereof. Background Art

[0002] An elevator is a vertical lift powered by an electric motor, equipped with a box-shaped cabin, used to carry people or goods in multi-story buildings. There are also step-type ones, with the treads mounted on tracks and running continuously, commonly known as escalators or moving walkways. A fixed lifting device serving a specified floor. A vertical lift has a car that runs between at least two vertical rigid rails.

[0003] An elevator consists of multiple parts, in which people stand in the car, which is a box-shaped space used to carry and transport people and materials. The car is generally composed of main parts such as the car bottom, car wall, car top, and car door. The car bottom is used to bear the weight, so the structure needs to be stable and is generally composed of multiple steel bars welded together.

[0004] The welding of the elevator car bottom generally requires laying a layer of base steel plate first, then welding multiple horizontal bars on the base steel plate, then welding several vertical bars, and finally welding a new layer of base steel plate to complete the welding. However, when welding the first layer of multiple horizontal bars, there is no reference position positioning on the base steel plate, which leads to the need for manual or positioning machinery to position the horizontal bars when placing them. After positioning, the horizontal bars must be arranged equidistantly before welding can be carried out. The existing positioning method generally uses manual line drawing or robotic arm transportation. The former wastes human resources and is half the efficiency, while the latter is too slow and complex to control.

[0005] To this end, the present invention provides an elevator car bottom combined welding auxiliary device and a splicing method thereof. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the elevator car bottom combined welding auxiliary equipment described in the present invention includes a stabilizing plate, a conveyor belt and a receiving frame, a plurality of hydraulic rods are vertically fixedly connected to the top surface of the stabilizing plate, the bottom ends of the plurality of hydraulic rods are fixedly connected to the outer frame of the conveyor belt, a plurality of groups of grabbing arms are fixedly connected to the outer side of the conveyor belt, each group of grabbing arms is arranged in parallel, the receiving frame is located on one side of the conveyor belt near the bottom end, the top surface of the receiving frame is open, and a lifting module is arranged at the inner bottom end of the receiving frame. During operation, the welding of the elevator car bottom generally requires first laying a layer of basic steel plate, then welding a plurality of horizontal bars on the basic steel plate, then welding a few vertical bars, and finally welding a new layer of basic steel plate to complete the welding. However, when welding the first layer of multiple horizontal bars, since there is no reference position positioning on the basic steel plate, it is necessary to manually or use a positioning machine to position the horizontal bars when placing them. After positioning, it is ensured that the cross bars are arranged equidistantly before welding can be carried out. The existing positioning method generally uses manual line drawing or mechanical arm transportation. The former wastes human resources and is half efficient, and the latter is too slow and complicated to control. Through the setting of the conveyor belt and the receiving frame, the cross bars are placed in the receiving frame one by one, and the cross bars are positioned upward by the lifting assembly, and the conveyor belt is started. As the multiple sets of grab arms move, each set of grab arms can grab a cross cylinder when it moves above the receiving frame. Then, as the conveyor belt continues to move, multiple cross bars can be grabbed and moved parallel to just below the conveyor belt. Then, only the grab arms need to release the cross bars to allow the multiple cross bars to be translated to the top of the base steel plate. Since the multiple sets of grab arms are equidistantly set, the transported cross bars are also equidistantly placed. Through this setting, the function of quickly aligning the cross bars is realized, and when aligning the longitudinal bars, the same function can be achieved by simply rotating the base steel plate ninety degrees.

[0008] Preferably, the inner side of the grabbing arm is hollow, the bottom end of one side of the grabbing arm is concave, the inner side of the grabbing arm is slidably connected to a magnetic column, the inner side of the grabbing arm is provided with a moving component, the moving component is used to move the magnetic column away, when working, when the grabbing arm moves to above the receiving frame, the concave part of the grabbing arm will hold the steel, and then the steel will be sucked by the adsorption of the three groups of magnetic columns, and with the friction force of the surface of the grabbing arm, the steel can be stably grasped, and then when all the grabbing arms are moved to above the base steel plate, the magnetic column is moved upward by the moving component, because the grabbing arm holds the steel, the steel does not move when the magnetic column is upward, and the steel will fall due to the disappearance of the magnetic force, thereby achieving the effect of grasping and releasing the steel, without the need to use a complex robotic arm for grasping, and without consuming a lot of energy, and pure mechanical movement also reduces the occurrence of faults.

[0009] Preferably, the moving assembly includes an upper push rod, which is fixedly connected to the magnetic column, and the inner top end of the grabbing arm is rotatably connected to a lever, one end of the lever is located above the magnetic column, and the bottom surface of the end of the lever away from the magnetic column is rotatably connected to a top column, the end of the lever close to the top column is longer than the end close to the magnetic column, and the bottom end of the top column is open, and the bottom end of the top column is slidably connected to two buffer blocks, and a spring is fixedly connected between the buffer block and the top column. When working, when the grabbing arm grabs the steel and moves to a predetermined position, a plurality of hydraulic rods are started to drive the conveyor belt to move downward as a whole, so that the steel is closer The surface of the extruded steel plate is squeezed, and at the same time, as it moves downward, the upper push rod will squeeze the basic steel plate. As the upper push rod is squeezed, the magnetic column will be driven to move upward, so that the bottom of the grabbing arm loses its magnetic force. At the same time, as the magnetic column moves upward, it will push the lever to cause the other side to sink, causing the push column to press down, so that the steel can be pushed down. Through the up and down movement, the steel can be effectively and steadily pressed down onto the basic steel. At the same time, with the setting of the buffer block, there is no need to accurately calculate the sinking depth of the lever, and the lifting and lowering of the buffer block can make up for the accuracy. When the steel has finished falling, start the hydraulic rod to let the conveyor belt rise and continue to run.

[0010] Preferably, an entrance is provided on the side of the receiving frame away from the conveyor belt, and a flip plate is rotatably connected to the side of the receiving frame close to the conveyor belt. A torsion spring is fixedly connected between the flip plate and the receiving frame. There are three grabbing arms in each group, and the three grabbing arms are equidistantly arranged. When working, only new conveying equipment needs to be used to continuously put the steel into the lifting module through the entrance, and then the lifting module pushes the steel up. When the grabbing arm arrives, as the flip plate rotates, the steel will separate from the receiving frame, thereby smoothly realizing the process of continuously docking and grabbing the steel with the grabbing arm.

[0011] Preferably, the conveyor belt includes a driving motor, a conveyor belt and a transmission gear. The inner ring of the conveyor belt is provided with a tooth groove. The conveyor belt is made of a flexible material, and a flexible metal sheet is fixed to the inside of the conveyor belt. When working, the driving force of the conveyor belt is greater than that of a traditional roller conveyor belt through the setting of the gear-shaped transmission gear and the tooth groove, which effectively ensures the effect of stabilizing the transportation of the grabbing arm. The setting of the metal sheet can improve the strength of the conveyor belt and reduce the problem of deformation of the conveyor belt during transportation.

[0012] Preferably, a fixed platform is fixedly connected to the top end of the grabbing arm, the fixed platform penetrates into the inner side of the conveyor belt, and the middle part of the fixed platform is composed of three cylinders. A plurality of through holes are opened on the outer side of the metal sheet, and the fixed platform is connected to the metal sheet through the through holes. When working, the fixed platform is set so that the fixed platform and the metal sheet are firmly bound together. When the grabbing arm is subjected to force, the force will be transmitted to the metal sheet through the fixed platform. Due to its metal material, the problem of overall deformation of the conveyor belt can be effectively reduced, ensuring that the steel can be transported to the designated location equidistantly and stably.

[0013] Preferably, a driving block is fixedly connected to the top of the upper push rod, and the top surface of the driving block is inclined. The bottom surface of the stabilizing plate is fixedly connected to an electric telescopic rod on one side. During operation, after a group of steel materials is transported, as the conveyor belt continues to rotate, the next layer of steel materials can be transported. At this time, the upper push rod of the used grabbing arm is in a state parallel to the lower part of the grabbing arm. When a new round begins, each group of grabbing arms will pass by one side of the electric telescopic rod. At this time, the electric telescopic rod is started to extend the electric telescopic rod, and the electric telescopic rod will contact the inclined driving block, thereby pushing the driving block upward. When the grabbing arm rotates over the conveyor belt, the driving block will protrude downward and return to its original state. Through this arrangement, the effect of continuous circulation and utilization is achieved without manual adjustment.

[0014] Preferably, the upper push rod is fixed to the magnetic column by a tripod, and the outer surface of the magnetic column is rotatably connected to a plurality of sliding balls. The bottom end of the stabilizing plate is fixed to two positioning rods which are centrally symmetrically arranged, and the outer surface of the conveyor belt is fixed to four positioning blocks, and the positioning blocks are arranged in a truncated cone shape. The bottom end of the positioning rod is provided with a truncated cone-shaped groove. During operation, the setting of the sliding ball can reduce the friction between the magnetic column and the grabbing arm, but there is an adsorption force between the magnetic column and the grabbing arm, so as to provide the movement stability of the magnetic column. As for the setting of the positioning rod, when the grabbing arm moves into place, the hydraulic rod is first started to shorten, so that the bottom end of the positioning rod and the positioning block are combined, and the truncated cone setting of the positioning block is matched. When combined, it can be gradually aligned with the positioning rod. At the same time, during the alignment process, the conveyor belt is driven to move slightly. Through this setting, it can be ensured that after each stop of the conveyor belt, a physical positioning effect is performed again, so that the steel can be moved to the predetermined position of the cross bar more accurately.

[0015] Preferably, two groups of inclined docking grooves are provided at the bottom end of the grabbing arm, an extrusion frame is fixedly connected to the bottom end of the stabilizing plate, three groups of filling grooves are provided at the top of the extrusion frame, a hydraulic rod 2 is provided at the top of the filling groove, and three groups of discharge ports are provided at the bottom end of the outer side of the extrusion frame, the discharge ports are connected with the filling grooves, and the discharge ports are arranged in an inclined manner. During operation, in order to ensure the quality of welding, it is generally necessary to add flux, but manual addition of flux is too time-consuming. Through the setting of the extrusion frame, materials such as rosin flux and shaping resin are poured into the filling groove, and the hydraulic rod 2 is inserted into the filling groove. Back in the filling tank, when the grabbing arm moves to the discharge port below the extrusion frame, the hydraulic rod is started to extend, and the solid rosin flux and shaping resin can be pressed into solid long strips through the discharge port and sent into the docking tank. When the steel is pressed down in the later stage, the long strip of flux will be located between the steel and the steel plate to assist the welding process, and the shaping resin has a certain adhesion, which can ensure that the steel has a certain adhesion with the steel plate before welding. Since the electric telescopic rod and the filling flux are the same, they need to be placed in the grabbing arm one by one, so the conveyor belt only needs to stop once periodically to perform two operations at the same time.

[0016] A welding and splicing method for an elevator car bottom, which is applicable to the above-mentioned elevator car bottom combined welding auxiliary device, is specifically as follows:

[0017] S1: Lay one of the two basic steel plates required for the elevator car bottom under the conveyor belt, use another conveyor structure to continuously transport the steel required for the car bottom to the receiving frame, start the conveyor belt to rotate, and let the grabbing arm contact the steel;

[0018] S2: When the grabbing arm contacts the steel, the grabbing arm is in a vertical state. With the help of the magnetic column inside the grabbing arm, multiple groups of grabbing arms can suck the steel and move with the conveyor belt.

[0019] S3: When the conveyor belt stops after moving for a cycle, the entire conveyor belt moves downward, and the upper top block, lever and top column are linked to push the steel downward, while the magnetic column rises upward. At this time, the steel can be evenly arranged on the basic steel, waiting for subsequent welding and assembly. After that, you only need to rotate the basic steel plate 90 degrees and repeat the above operation to lay the required horizontal and vertical bars, and then lay the second basic steel plate to complete the welding and splicing process.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The elevator car bottom combined welding auxiliary equipment and the splicing method thereof described in the present invention, through the setting of the conveyor belt and the receiving frame, the horizontal bars are placed into the receiving frame one by one, the horizontal bars are positioned upward by the lifting assembly, and the conveyor belt is started. With the movement of multiple groups of grabbing arms, each group of grabbing arms can grab a horizontal cylinder when it moves above the receiving frame. Then, with the continuous movement of the conveyor belt, multiple horizontal bars can be grabbed and moved parallel to the bottom of the conveyor belt. Then, it is only necessary to let the grabbing arms release the horizontal bars to allow the multiple horizontal bars to be translated to the top of the base steel plate. Since the multiple groups of grabbing arms are equidistantly arranged, the transported horizontal bars are also equidistantly placed. Through this arrangement, the function of quickly aligning the horizontal bars is realized, and when aligning the vertical bars, the same function can be achieved by simply rotating the base steel plate ninety degrees.

[0022] 2. The present invention discloses an elevator car bottom combined welding auxiliary device and a splicing method thereof. The structure of the grabbing arm is set. When the grabbing arm moves to the top of the receiving frame, the concave part of the grabbing arm will hold the steel. Then, under the adsorption of the three groups of magnetic columns, the steel is sucked. With the friction force of the surface of the grabbing arm, the steel can be stably grasped. Then, when all the grabbing arms move to the top of the base steel plate, the magnetic column is moved upward by the moving component. Since the grabbing arm holds the steel, the steel does not move when the magnetic column is upward. Since the magnetic force disappears, the steel will fall, thereby achieving the effect of grasping and releasing the steel. There is no need to use a complex mechanical arm for grasping, nor does it need to consume a lot of energy. Pure mechanical movement also reduces the occurrence of faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 is a stereogram of the present invention;

[0025] Figure 2 is a three-dimensional diagram of the conveyor belt and receiving frame of the present invention;

[0026] Figure 3 is a three-dimensional diagram of a grabbing arm in the present invention;

[0027] Figure 4 It is a structural schematic diagram of the grabbing arm in the present invention;

[0028] Figure 5 It is a schematic diagram of the bottom structure of the grabbing arm in the present invention;

[0029] Figure 6 is a three-dimensional diagram of a receiving frame in the present invention;

[0030] Figure 7 is a first-perspective stereogram of the stabilizing plate of the present invention;

[0031] Figure 8is a second perspective stereogram of the stabilizing plate of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of the conveyor belt in the present invention;

[0033] Fig.10 is a block diagram of the splicing method of the present invention;

[0034] In the figure: 1. stabilizing plate; 2. extrusion frame; 3. hydraulic rod 1; 4. grab arm; 5. receiving frame; 6. conveyor belt; 7. positioning block; 8. transmission gear; 9. tooth groove; 10. driving motor; 11. fixed platform; 12. upper push rod; 13. driving block; 14. lever; 15. push column; 16. buffer block; 17. magnetic column; 18. sliding ball; 19. docking groove; 20. entrance; 21. flip plate; 22. lifting module; 23. hydraulic rod 2; 24. positioning rod; 25. electric telescopic rod; 27. discharge port; 28. metal sheet; 29. ​​through hole. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] Embodiment 1

[0037] like Figure 1 to Figure 2As shown, an elevator car bottom combined welding auxiliary device described in an embodiment of the present invention comprises a stabilizing plate 1, a conveyor belt 6 and a receiving frame 5, a plurality of hydraulic rods 3 are vertically fixedly connected to the top surface of the stabilizing plate 1, the bottom ends of the plurality of hydraulic rods 3 are fixedly connected to the outer frame of the conveyor belt 6, a plurality of groups of grabbing arms 4 are fixedly connected to the outer side of the conveyor belt 6, each group of grabbing arms 4 are arranged in parallel, the receiving frame 5 is located on one side of the conveyor belt 6 near the bottom end, the top surface of the receiving frame 5 is open, and a lifting module 22 is arranged at the inner bottom end of the receiving frame 5. During operation, the welding of the elevator car bottom generally requires first laying a layer of basic steel plate, then welding a plurality of horizontal bars on the basic steel plate, then welding a plurality of vertical bars, and finally welding a new layer of basic steel plate to complete the welding. However, when welding the first layer of multiple horizontal bars, since there is no reference position positioning on the basic steel plate, it is necessary to manually or by a positioning machine to position the horizontal bars when placing them, and the positioning is required to ensure that the horizontal bars are in the correct position. The welding work can only be carried out when the cross bars are arranged equidistantly. The existing positioning methods generally use manual line drawing or mechanical arm transportation. The former wastes human resources and is half as efficient, while the latter is too slow and complicated to control. Through the setting of the conveyor belt 6 and the receiving frame 5, the cross bars are placed into the receiving frame 5 one by one, and the cross bars are positioned upward by the lifting assembly, and the conveyor belt 6 is started. As the multiple groups of grab arms 4 move, each group of grab arms 4 can grab a cross cylinder when it moves above the receiving frame 5. Then, as the conveyor belt 6 continues to move, multiple cross bars can be grabbed and moved parallel to just below the conveyor belt 6. Then, only the grab arms 4 need to release the cross bars to allow the multiple cross bars to be translated to the top of the base steel plate. Since the multiple groups of grab arms 4 are equidistantly set, the transported cross bars are also equidistantly placed. Through this setting, the function of quickly aligning the cross bars is realized, and when aligning the longitudinal bars, the same function can be achieved by simply rotating the base steel plate ninety degrees.

[0038] like Figures 3 to 5 As shown, the inner side of the grabbing arm 4 is hollow, and the bottom end of one side of the grabbing arm 4 is concave. The inner side of the grabbing arm 4 is slidably connected with a magnetic column 17. The inner side of the grabbing arm 4 is provided with a moving component, and the moving component is used to move the magnetic column 17 away. During operation, when the grabbing arm 4 moves to above the receiving frame 5, the concave part of the grabbing arm 4 will hold the steel, and then the steel will be sucked by the adsorption of the three groups of magnetic columns 17, and the friction force on the surface of the grabbing arm 4 can stably grasp the steel. Then, when all the grabbing arms 4 move to above the base steel plate, the magnetic column 17 is moved upward by the moving component. Since the grabbing arm 4 holds the steel, the steel does not move when the magnetic column 17 is upward, and the steel will fall due to the disappearance of the magnetic force, thereby achieving the effect of grasping and releasing the steel. There is no need to use a complex robotic arm for grasping, nor does it require a lot of energy. Pure mechanical movement also reduces the occurrence of faults.

[0039] like Figures 3 to 5As shown, the moving assembly includes an upper push rod 12, which is fixedly connected to a magnetic column 17. The inner top end of the grabbing arm 4 is rotatably connected to a lever 14, one end of the lever 14 is located above the magnetic column 17, and the bottom surface of the end of the lever 14 away from the magnetic column 17 is rotatably connected to a push column 15. The end of the lever 14 close to the push column 15 is longer than the end close to the magnetic column 17. The bottom end of the push column 15 is open, and the bottom end of the push column 15 is slidably connected to two buffer blocks 16. A spring is fixedly connected between the buffer block 16 and the push column 15. When working, when the grabbing arm 4 grabs the steel and moves to a predetermined position, a plurality of hydraulic rods 13 are started to drive the conveyor belt 6 to move downward as a whole. At the same time, as it moves downward, the upper push rod 12 will squeeze the basic steel plate. As the upper push rod 12 is squeezed, the magnetic column 17 will be driven to move upward, so that the bottom of the grab arm 4 loses its magnetic force. At the same time, as the magnetic column 17 moves upward, it will push the lever 14 to cause the other side to sink, so that the push column 15 is pressed down, so that the steel can be pushed down. Through the up and down movement, the steel can be effectively and steadily pressed down onto the basic steel. At the same time, with the setting of the buffer block 16, there is no need to accurately calculate the sinking depth of the lever 14, and the lifting and lowering of the buffer block 16 can make up for the accuracy. When the steel has finished falling, start the hydraulic rod 13 to let the conveyor belt 6 rise and continue to run.

[0040] like Figure 6 As shown, an entrance port 20 is provided on the side of the receiving frame 5 away from the conveyor belt 6, and a flip plate 21 is rotatably connected to the side of the receiving frame 5 close to the conveyor belt 6. A torsion spring is fixedly connected between the flip plate 21 and the receiving frame 5. There are three grabbing arms 4 in each group, and the three grabbing arms 4 are equidistantly arranged. When working, only new conveying equipment needs to be used to continuously put the steel through the entrance port 20 and into the lifting module 22, and then the lifting module 22 pushes the steel up. When the grabbing arm 4 arrives, as the flip plate 21 rotates, the steel will break away from the receiving frame 5, thereby smoothly realizing the process of continuously docking and grabbing the steel with the grabbing arm 4.

[0041] like Figure 1 to Figure 2 and Fig. 9 As shown, the conveyor belt 6 includes a driving motor 10, a conveyor belt and a transmission gear 8. The inner ring of the conveyor belt is provided with a tooth groove 9. The conveyor belt is made of flexible material, and a flexible metal sheet 28 is fixedly connected to the inside of the conveyor belt. When working, through the setting of the gear-shaped transmission gear 8 and the tooth groove 9, compared with the traditional roller conveyor belt 6, the driving force of the conveyor belt is greater, which effectively ensures the effect of stable transportation of the grabbing arm 4, and the setting of the metal sheet 28 can improve the strength of the conveyor belt and reduce the problem of deformation of the conveyor belt during transportation.

[0042] like Figure 3 and Fig. 9As shown, the top of the grabbing arm 4 is fixedly connected with a fixing platform 11, and the fixing platform 11 penetrates into the inner side of the conveyor belt, and the middle part of the fixing platform 11 is composed of three cylinders, and a plurality of through holes 29 are opened on the outer side of the metal sheet 28, and the fixing platform 11 is connected with the metal sheet 28 through the through holes 29. When working, the setting of the fixing platform 11 makes the fixing platform 11 and the metal sheet 28 firmly bound together. When the grabbing arm 4 is subjected to force, the force will be transmitted to the metal sheet 28 through the fixing platform 11. Due to its metal material, the problem of overall deformation of the conveyor belt 6 can be effectively reduced, ensuring that the steel can be transported to the designated location equidistantly and stably.

[0043] like Figures 4 to 8 As shown, a driving block 13 is fixedly connected to the top of the upper push rod 12, and the top surface of the driving block 13 is inclined. An electric telescopic rod 25 is fixedly connected to one side of the bottom surface of the stabilizing plate 1. During operation, after a group of steel materials is transported, as the conveyor belt 6 continues to rotate, the next layer of steel materials can be transported. At this time, the upper push rod 12 of the used grabbing arm 4 is in a state parallel to the lower part of the grabbing arm 4. When a new round begins, each group of grabbing arms 4 will pass through one side of the electric telescopic rod 25. At this time, the electric telescopic rod 25 is started to extend the electric telescopic rod 25. The electric telescopic rod 25 will contact the inclined driving block 13, thereby pushing the driving block 13 upward. After the grabbing arm 4 rotates over the conveyor belt 6, the driving block 13 will protrude downward and return to its original state. Through this arrangement, the effect of continuous circulation and utilization is achieved without manual adjustment.

[0044] like Figures 2 to 8 As shown, the upper push rod 12 is fixedly connected to the magnetic column 17 through a tripod, and the outer surface of the magnetic column 17 is rotatably connected to a plurality of sliding balls 18. The bottom end of the stabilizing plate 1 is fixedly connected to two positioning rods 24 that are centrally symmetrically arranged. The outer surface of the conveyor belt 6 is fixedly connected to four positioning blocks 7, and the positioning blocks 7 are arranged in a truncated cone shape. The bottom end of the positioning rod 24 is provided with a truncated cone-shaped groove. When working, the setting of the sliding ball 18 can reduce the friction between the magnetic column 17 and the grabbing arm 4, but the friction between the magnetic column 17 and the grabbing arm 4 is not large. There is an adsorption force to provide stable movement of the magnetic column 17, and the positioning rod 24 is set. When the grabbing arm 4 moves into place, the hydraulic rod 3 is first started to shorten, so that the bottom end of the positioning rod 24 is combined with the positioning block 7, and the truncated cone setting of the positioning block 7 is matched. When combined, it can be gradually aligned with the positioning rod 24. At the same time, during the alignment process, the conveyor belt 6 is driven to move slightly. Through this setting, it can be ensured that after each stop of the conveyor belt 6, a physical positioning effect is performed again to ensure that the steel can be moved to the predetermined position of the cross bar more accurately.

[0045] like Fig.10As shown, a welding and splicing method for an elevator car bottom is characterized in that: the splicing method is applicable to the above-mentioned elevator car bottom combined welding auxiliary device, and the method is specifically as follows:

[0046] S1: Lay one of the two basic steel plates required for the elevator car bottom under the conveyor belt 6, use another conveying structure to continuously transport the steel required for the car bottom to the receiving frame 5, start the conveyor belt 6 to rotate, and let the grabbing arm 4 contact the steel;

[0047] S2: When the grabbing arms 4 contact the steel, the grabbing arms 4 are in a vertical state. With the help of the magnetic columns 17 inside the grabbing arms 4, the multiple groups of grabbing arms 4 can hold the steel and move with the conveyor belt 6.

[0048] S3: When the conveyor belt 6 stops after moving for a cycle, the entire conveyor belt 6 is moved downward, and the upper top block 12, the lever 14 and the top column 15 are linked to push the steel downward, and the magnet column 17 is raised upward. At this time, the steel can be arranged equidistantly on the basic steel, waiting for subsequent welding and assembly. After that, you only need to rotate the basic steel plate 90 degrees and repeat the above operation to lay the required horizontal and vertical bars, and then lay the second basic steel plate to complete the welding and splicing process.

[0049] Compared with the traditional splicing method, this method does not require manual positioning of the horizontal and vertical bars, and the positioning process is fast and regular, ensuring the welding quality. At the same time, the overall grabbing and putting down structure mostly adopts mechanical design, reducing the occurrence of failures.

[0050] Embodiment 2

[0051] like Figures 5 to 8As shown, compared with Example 1, another implementation of the present invention is: the bottom end of the grabbing arm 4 is provided with two groups of inclined docking grooves 19, the bottom end of the stabilizing plate 1 is fixedly connected to the extrusion frame 2, the top of the extrusion frame 2 is provided with three groups of filling grooves, the top of the filling groove is provided with a hydraulic rod 23, and the outer bottom end of the extrusion frame 2 is provided with three groups of discharge ports 27, the discharge ports 27 are connected to the filling grooves, and the discharge ports 27 are arranged at an angle. During work, in order to ensure the quality of welding, it is generally necessary to add flux, but manual addition of flux is too time-consuming. Through the setting of the extrusion frame 2, materials such as rosin flux and plastic resin are poured into the filling groove. In the filling tank, insert the hydraulic rod 23 back into the filling tank. When the grabbing arm 4 moves to the discharge port 27 below the extrusion frame 2, start the hydraulic rod 23 to extend, so that the solid rosin flux and shaping resin can be pressed into a solid long strip through the discharge port 27 and sent into the docking tank 19. When the steel is pressed down in the later stage, the long strip of flux will be located between the steel and the steel plate to assist the welding process. The shaping resin has a certain adhesion, which can ensure that the steel has a certain adhesion with the steel plate before welding. Since the electric telescopic rod 25 and the filling flux are the same, they need to be placed in the grabbing arm 4 one by one, so the conveyor belt 6 only needs to stop once periodically to perform two operations at the same time.

[0052] During operation, the welding of the elevator car bottom generally requires laying a layer of base steel plate first, then welding multiple horizontal bars on the base steel plate, then welding several vertical bars, and finally welding a new layer of base steel plate to complete the welding. However, when welding the first layer of multiple horizontal bars, since there is no reference position positioning on the base steel plate, it is necessary to manually or mechanically position the horizontal bars when placing the horizontal bars. After positioning, the horizontal bars must be arranged equidistantly before welding can be carried out. The existing positioning method generally uses manual line drawing or mechanical arm transportation. The former wastes human resources and is half the efficiency, while the latter is too slow and complicated to control. The horizontal bars are placed one by one in the receiving frame through the setting of the conveyor belt 6 and the receiving frame 5. 5, the horizontal bar is positioned upward by the lifting assembly, and the conveyor belt 6 is started. As the multiple groups of grab arms 4 move, each group of grab arms 4 can grab a horizontal cylinder when it moves above the receiving frame 5. Then, as the conveyor belt 6 continues to move, multiple horizontal bars can be grabbed and moved parallel to the bottom of the conveyor belt 6. Then, it is only necessary to let the grab arms 4 release the horizontal bars to allow the multiple horizontal bars to be translated to the top of the basic steel plate. Since the multiple groups of grab arms 4 are equidistantly arranged, the transported horizontal bars are also equidistantly placed. Through this arrangement, the function of quickly aligning the horizontal bars is realized, and when aligning the vertical bars, the same function can be achieved by simply rotating the basic steel plate ninety degrees. When the grab arms 4 move to the top of the receiving frame 5, the grab arms 4 The concave part of the arm 4 will hold the steel, and then the steel will be sucked under the adsorption of the three groups of magnetic columns 17. With the friction force on the surface of the grabbing arm 4, the steel can be stably grasped. Then, when all the grabbing arms 4 move above the base steel plate, the magnetic column 17 will be moved upward through the moving assembly. Since the grabbing arm 4 holds the steel, the steel will not move when the magnetic column 17 is upward. Since the magnetic force disappears, the steel will fall, thereby achieving the effect of grasping and releasing the steel. There is no need to use a complex mechanical arm to grasp, nor does it need to consume a lot of energy. Pure mechanical movement also reduces the occurrence of faults. When the grabbing arm 4 grabs the steel and moves to the predetermined position, multiple hydraulic rods 3 are started to drive the conveyor belt 6 as a whole. Move downward to make the steel closer to the surface of the extruded steel plate. At the same time, as it moves downward, the upper push rod 12 will squeeze the basic steel plate. As the upper push rod 12 squeezes, it will drive the magnetic column 17 to move upward, so that the bottom of the grabbing arm 4 loses its magnetic force. At the same time, as the magnetic column 17 moves upward, it will push the lever 14 to cause the other side to sink, so that the push column 15 can be pressed down, so that the steel can be pushed down. Through the up and down movement, the steel can be effectively and steadily pressed down onto the basic steel. At the same time, with the setting of the buffer block 16, there is no need to accurately calculate the sinking depth of the lever 14, and the lifting and lowering of the buffer block 16 can make up for the accuracy. When the steel has finished falling, start the hydraulic rod 13 to let the conveyor belt 6 rise and continue to run;Only the new conveying equipment is needed to continuously put the steel into the lifting module 22 through the entrance 20, and then let the lifting module 22 push the steel up. When the grabbing arm 4 comes, the steel will be separated from the receiving frame 5 as the flip plate 21 rotates, thereby smoothly realizing the process of the steel continuously docking and grabbing with the grabbing arm 4; through the setting of the gear-shaped transmission gear 8 and the card tooth groove 9, compared with the traditional roller conveyor belt 6, the driving force of the conveyor belt is greater, which effectively ensures the effect of stable transportation of the grabbing arm 4, and the setting of the metal sheet 28 can improve the conveyor belt. The strength of the conveyor belt 6 is reduced, and the problem of deformation of the conveyor belt during transportation is reduced; the setting of the fixed platform 11, the fixed platform 11 and the metal sheet 28 are firmly bound together. When the grabbing arm 4 is subjected to force, the force will be transmitted to the metal sheet 28 through the fixed platform 11. Due to its metal material, the problem of overall deformation of the conveyor belt 6 can be effectively reduced, ensuring that the steel can be transported to the designated location equidistantly and stably; when a group of steel is transported, as the conveyor belt 6 continues to rotate, the next layer of steel can be transported. At this time, the upper push rod 12 of the used grabbing arm 4 is in contact with the grabbing arm 4. The lower part of the arm 4 is parallel to the state. When a new round starts, each group of grabbing arms 4 will pass one side of the electric telescopic rod 25. At this time, the electric telescopic rod 25 is started to extend the electric telescopic rod 25. The electric telescopic rod 25 will contact the inclined driving block 13, thereby pushing the driving block 13 upward. When the grabbing arm 4 rotates over the conveyor belt 6, the driving block 13 will protrude downward and return to its original state. Through this setting, the effect of continuous circulation and utilization is achieved without manual adjustment; the setting of the sliding ball 18 can reduce the friction between the magnetic column 17 and the grabbing arm 4, but There is an adsorption force between the magnet column 17 and the grab arm 4, so as to provide the movement stability of the magnet column 17, and the setting of the positioning rod 24, when the grab arm 4 moves into place, the hydraulic rod 3 is first started to shorten, so that the bottom end of the positioning rod 24 and the positioning block 7 are combined, and the truncated table setting of the positioning block 7 are matched. When combined, it can be gradually aligned with the positioning rod 24, and at the same time, during the alignment process, the conveyor belt 6 is driven to move slightly. Through this setting, it can be ensured that after each stop of the conveyor belt 6, a physical positioning effect is performed again, so that the steel can be more accurately moved to the predetermined position of the horizontal bar. ;

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An elevator car bottom combined welding auxiliary device, characterized in that: It comprises a stabilizing plate (1), a conveyor belt (6) and a receiving frame (5), wherein a plurality of hydraulic rods (3) are vertically fixedly connected to the top surface of the stabilizing plate (1), the bottom ends of the plurality of hydraulic rods (3) are fixedly connected to the outer frame of the conveyor belt (6), a plurality of groups of grabbing arms (4) are fixedly connected to the outer side of the conveyor belt (6), each group of grabbing arms (4) are arranged in parallel, the receiving frame (5) is located on one side of the conveyor belt (6) near the bottom end, the top surface of the receiving frame (5) is arranged in an open manner, and a lifting module (22) is arranged at the inner bottom end of the receiving frame (5); The inner side of the grabbing arm (4) is hollow, the bottom end of one side of the grabbing arm (4) is concave, the inner side of the grabbing arm (4) is slidably connected to a magnetic column (17), and a moving component is provided on the inner side of the grabbing arm (4), and the moving component is used to move the magnetic column (17) away; The moving assembly comprises an upper push rod (12), the upper push rod (12) being fixedly connected to a magnet column (17), the inner top end of the grabbing arm (4) being rotatably connected to a lever (14), one end of the lever (14) being located above the magnet column (17), the bottom surface of one end of the lever (14) away from the magnet column (17) being rotatably connected to a push column (15), the end of the lever (14) close to the push column (15) being longer than the end close to the magnet column (17), the bottom end of the push column (15) being open, the bottom end of the push column (15) being slidably connected to two buffer blocks (16), a spring being fixedly connected between the buffer block (16) and the push column (15).

2. The elevator car bottom combined welding auxiliary device according to claim 1, characterized in that: An entrance opening (20) is provided on a side of the receiving frame (5) away from the conveyor belt (6), and a flip plate (21) is rotatably connected to a side of the receiving frame (5) close to the conveyor belt (6). A torsion spring is fixedly connected between the flip plate (21) and the receiving frame (5). Each group of grabbing arms (4) has three grabbing arms (4), and the three grabbing arms (4) are equidistantly arranged.

3. The elevator car bottom combined welding auxiliary device according to claim 2 is characterized in that: The conveyor belt (6) comprises a driving motor (10), a conveyor belt and a transmission gear (8); the inner ring of the conveyor belt is provided with a tooth groove (9); the conveyor belt is made of a flexible material, and a flexible metal sheet (28) is fixedly connected to the inside of the conveyor belt.

4. The elevator car bottom combined welding auxiliary device according to claim 3 is characterized in that: The top end of the grabbing arm (4) is fixedly connected to a fixing platform (11), the fixing platform (11) is inserted deep into the inner side of the conveyor belt, and the middle part of the fixing platform (11) is composed of three cylinders. The outer side of the metal sheet (28) is provided with a plurality of through holes (29), and the fixing platform (11) is connected to the metal sheet (28) through the through holes (29).

5. The elevator car bottom combined welding auxiliary device according to claim 4 is characterized in that: A driving block (13) is fixedly connected to the top end of the upper push rod (12), the top surface of the driving block (13) is arranged in an inclined manner, and an electric telescopic rod (25) is fixedly connected to one side of the bottom surface of the stabilizing plate (1).

6. The elevator car bottom combined welding auxiliary device according to claim 5, characterized in that: The upper push rod (12) is fixedly connected to the magnetic column (17) via a tripod, the outer surface of the magnetic column (17) is rotatably connected to a plurality of sliding balls (18), the bottom end of the stabilizing plate (1) is fixedly connected to two centrally symmetrically arranged positioning rods (24), the outer surface of the conveyor belt (6) is fixedly connected to four positioning blocks (7), the positioning blocks (7) are arranged in a truncated cone shape, and the bottom end of the positioning rod (24) is provided with a truncated cone-shaped groove.

7. The elevator car bottom combined welding auxiliary device according to claim 6, characterized in that: The bottom end of the grabbing arm (4) is provided with two groups of inclined docking grooves (19), the bottom end of the stabilizing plate (1) is fixedly connected to an extrusion frame (2), the top end of the extrusion frame (2) is provided with three groups of filling grooves, the top end of the filling groove is provided with a second hydraulic rod (23), and the outer bottom end of the extrusion frame (2) is provided with three groups of discharge ports (27), the discharge ports (27) are connected to the filling grooves, and the discharge ports (27) are arranged in an inclined manner.

8. A method for welding and splicing an elevator car bottom, characterized in that: The splicing method is applicable to an elevator car bottom combined welding auxiliary device as described in any one of claims 1 to 7, and the method is specifically: S1: Lay one of the two basic steel plates required for the elevator car bottom under the conveyor belt (6), use another conveying structure to continuously transport the steel required for the car bottom to the receiving frame (5), start the conveyor belt (6) to rotate, and allow the grabbing arm (4) to contact the steel; S2: When the grabbing arm (4) contacts the steel, the grabbing arm (4) is in a vertical state, and in cooperation with the magnetic column (17) inside the grabbing arm (4), the plurality of grabbing arms (4) can suck the steel and move along with the conveyor belt (6); S3: After the conveyor belt (6) moves for a cycle, it stops and the entire conveyor belt (6) moves downward. The upper push rod (12), the lever (14) and the push column (15) are linked to push the steel downward. At the same time, the magnetic column (17) rises upward. At this time, the steel can be arranged equidistantly on the basic steel, waiting for subsequent welding and assembly. After that, it is only necessary to rotate the basic steel plate 90 degrees and repeat the operation to lay the required horizontal and vertical bars. Then, lay the second basic steel plate and complete the welding and assembly process.

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