An elevator shoe welding positioning device

Abstract

The present application belongs to elevator guide shoe welding technical field, especially, relate to a kind of elevator guide shoe welding positioning equipment, including bottom plate, the upper surface of the bottom plate is fixedly connected with support plate, and the outer wall of the support plate is provided with round hole.The elevator guide shoe welding positioning equipment of the present application, first, through the plate-shaped positioning groove and support positioning mechanism, the quick and accurate positioning of elevator guide shoe parts is realized, without manual measurement marking, not only improve the positioning efficiency, reduce the labor intensity, but also guarantee the positioning accuracy, while with the help of driving mechanism, the welding position of elevator guide shoe can be flexibly adjusted, not only convenient operation, but also can make molten metal fully flow into weld, effectively enhance the firmness and quality of welding, in addition, equipment handles welding fume through environmental protection mechanism, can improve environmental protection performance and guarantee personnel health, and weld timely preheating mechanism can reduce welding defects, further guarantee welding quality and the safety of subsequent use of elevator.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of elevator guide shoe welding, in particular to an elevator guide shoe welding positioning device. BACKGROUND

[0002] The elevator guide shoe is a guide device installed on both sides of the car and the counterweight, which is in contact with the guide rail, can limit the lateral sway of the car and the counterweight, and ensure its smooth running along the guide rail, is a key component to ensure the safety and comfort of the elevator, and can be divided into sliding guide shoes and roller guide shoes according to the structure.

[0003] Among them, the elevator roller guide shoe is in rolling contact with the guide rail through a polyurethane or rubber roller, which reduces friction and noise, and the roller support and base plate are connected by welding. Because the support needs to withstand the lateral impact force of the car during operation, welding can form a rigid whole to avoid the risk of loosening of bolt connection under long-term vibration, ensure the perpendicularity of the support and the parallelism of the roller and the guide rail, ensure the stability of the guide, and at the same time improve the structural strength to cope with the load changes of frequent start and stop.

[0004] At present, during the welding process of the roller support and the base plate of the elevator guide shoe, the staff first needs to measure on the base plate and determine the welding position between the roller support and the base plate, then mark the position on the base plate, and then place the roller support on the base plate, at the same time, ensure the stability between the roller support and the base plate through the corresponding clamp, and finally the staff fixes the roller support on the base plate by welding equipment. However, the welding positioning process of the elevator guide shoe parts is not only cumbersome and inconvenient, but also affects the efficiency of welding positioning, and the manual measurement positioning error is large, which also affects the accuracy of the welding positioning of the elevator guide shoe parts, and even affects the reliability of the subsequent use of the elevator guide shoe.

[0005] In addition, when the roller support and the base plate are positioned and welded, the welds of the two are prone to cold cracking, incomplete fusion and welding deformation problems due to the lack of timely weld preheating function. This is because the roller support and the base plate are mostly low alloy structural steel (such as Q355), and the rapid cooling of the groove area during welding will form hardened structure, which is prone to cold cracking after superimposing thermal stress and restraint stress. At the same time, the poor fluidity of the molten pool in the low temperature environment is prone to incomplete fusion defects, which reduces the load bearing capacity of the weld, and the uneven temperature field will cause deformation after welding, which destroys the parallelism of the roller support and the guide rail, eventually causing abnormal noise and vibration during elevator operation, and even affecting the safety of operation.

[0006] Therefore, we propose an elevator guide shoe welding positioning device to solve the above problems. SUMMARY

[0007] The purpose of the present application is to provide an elevator guide shoe welding positioning device to solve the above problems.

[0008] In order to achieve the above object, the following technical scheme is adopted in the present application: The elevator guide shoe welding positioning device comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a supporting plate, the outer wall of the supporting plate is provided with a circular hole, the hole wall of the circular hole is fixedly connected with a rolling bearing, the inner wall of the rolling bearing is fixedly connected with a connecting pipe;

[0009] The side end of the connecting pipe is fixedly connected with an L-shaped positioning plate, the vertical part of the L-shaped positioning plate is provided with a plate-shaped positioning groove on the outer wall, the upper surface of the horizontal part of the L-shaped positioning plate is fixedly connected with a support positioning mechanism;

[0010] The outer wall of the supporting plate is fixedly connected with a driving mechanism;

[0011] The lower surface of the bottom plate is fixedly connected with two L-shaped fixed plates, and the lower surface of the bottom plate is fixedly connected with an environmental protection mechanism;

[0012] The top end of the environmental protection mechanism is provided with a fixed hole, and the hole wall of the fixed hole is fixedly connected with a welding seam and time preheating mechanism;

[0013] The upper surface of the bottom plate is provided with a rectangular air inlet hole matched with the air inlet end of the environmental protection mechanism, and the upper surface of the bottom plate is also provided with a through hole matched with the welding seam and time preheating mechanism.

[0014] In the above-mentioned elevator guide shoe welding positioning device, the support positioning mechanism comprises a first electric push rod fixedly connected with the upper surface of the horizontal part of the L-shaped positioning plate, the moving part of the first electric push rod is fixedly connected with a pressing plate at the top end, the outer wall of the fixed part of the first electric push rod is fixedly sleeved with an L-shaped fixed block, the upper surface of the L-shaped fixed block is fixedly connected with a positioning frame, the bottom end of the L-shaped fixed block is fixedly embedded with a second electric push rod, the moving end of the second electric push rod is fixedly connected with a connecting block, and the connecting hole of the connecting block is fixedly connected with a U-shaped auxiliary support pressing block through bolts.

[0015] In the above-mentioned elevator guide shoe welding positioning device, the inner wall of the U-shaped auxiliary support pressing block is fixedly provided with a U-shaped anti-skid rubber block, the outer walls of the two sides of the pressing plate are both fixedly connected with positioning side blocks, the lower surface of one of the positioning side blocks is fixedly connected with a touch switch, and the button end of the touch switch is located directly above the positioning frame.

[0016] In the above-mentioned elevator guide shoe welding positioning device, the upper surface of the horizontal part of the L-shaped positioning plate is fixedly connected with a supporting rod, and the rod wall of the supporting rod is fixedly sleeved with a rubber pressing sleeve matched with the plate-shaped positioning groove.

[0017] In the elevator guide shoe welding positioning equipment, the driving mechanism comprises a small servo motor fixedly connected with the upper surface of the support plate, the output end of the small servo motor penetrates through the reserved hole of the support plate and is fixedly connected with a gear, and the outer wall of the connecting pipe is fixedly sleeved with an external tooth ring which is in mesh with the outer wall of the gear.

[0018] In the elevator guide shoe welding positioning equipment, the environmental protection mechanism comprises a dust collection box fixedly connected with the lower surface of the bottom plate, the inner wall of the dust collection box is fixedly connected with a partition plate, the surface of the partition plate is fixedly embedded with a filter screen cylinder, the outer wall of the filter screen cylinder is movably sleeved with a composite filter element cylinder, the outer wall of the dust collection box is provided with a threaded hole, the hole wall of the threaded hole is threadedly and sealingly connected with a connecting cover, the inner wall of the connecting cover is fixedly connected with the outer wall of the side end of the composite filter element cylinder, the side wall of the composite filter element cylinder is sealingly connected with the outer wall of the partition plate, the inner wall of the dust collection box is fixedly connected with a micro suction pump, the output end of the micro suction pump is fixedly communicated with an exhaust pipe, and the air inlet hole of the dust collection box is fixedly connected with a filter screen.

[0019] In the elevator guide shoe welding positioning equipment, the outer wall of the connecting cover is fixedly connected with a U-shaped handle, and the outer wall of one of the L-shaped fixed plates is provided with a through hole round hole matched with the connecting cover.

[0020] In the elevator guide shoe welding positioning equipment, the welding seam and timely preheating mechanism comprises a heat insulation cylinder fixedly embedded with the dust collection box, the top end of the heat insulation cylinder is fixedly embedded with an electric heating coil, the output end of the exhaust pipe is fixedly communicated with the bottom end of the heat insulation cylinder, the top end of the heat insulation cylinder is fixedly communicated with an L-shaped hard pipe, the pipe wall of the L-shaped hard pipe is fixedly communicated with a temperature sensor, and the output end of the L-shaped hard pipe is fixedly communicated with a universal air jet nozzle.

[0021] In the elevator guide shoe welding positioning equipment, the outer wall of the L-shaped fixed plate is fixedly connected with a PLC controller, the outer wall of the PLC controller is fixedly connected with a touch control screen, the inner wall of the connecting pipe is fixedly connected with a conductive slip ring, and the side end of the connecting pipe close to the L-shaped fixed plate is provided with a wire slot.

[0022] Compared with the prior art, the elevator guide shoe welding positioning equipment has the advantages that:

[0023] 1. When the roller support in the elevator roller guide shoe needs to be welded and positioned with the base plate, the base plate is first placed in the plate-shaped positioning groove of the L-shaped positioning plate, at which time the rubber pressure sleeve on the supporting rod contacts and extrudes the base plate on the outside, and then the roller support is placed on the L-shaped fixed block, and the side end of the roller support is positioned in the positioning frame and limited by the support positioning mechanism, ensuring that the positioning state does not change, if the side end of the roller support also needs to be welded with a reinforcing rib plate or a secondary support, the reinforcing rib plate or the secondary support can be placed in the U-shaped anti-skid rubber block, and then positioned by moving the second electric push rod and the U-shaped secondary support pressing block, the device can quickly and conveniently complete the positioning work of the elevator guide shoe parts before welding, and the whole process does not need workers to measure and mark the position, which not only improves the efficiency of welding and positioning, reduces the labor intensity of workers, but also improves the accuracy of welding and positioning, and thus ensures the reliability of the subsequent use of the elevator guide shoe.

[0024] 2. When the workers weld the positioned elevator guide shoe through the welding equipment, the workers can also control the small servo motor to work through the touch control screen and the PLC controller, and the driving end of the small servo motor drives the L-shaped positioning plate to rotate slowly through the gear, the external gear ring and the connecting pipe, and the rotation of the L-shaped positioning plate can rotate the welding position of the elevator guide shoe on the lower side to the upper side, which not only facilitates the workers' welding work, but also allows the molten metal generated by welding to flow into the welding seam under the action of gravity, improving the firmness and quality of welding.

[0025] 3. When the pressing plate limits the roller support, the touch switch below the positioning side block is extruded by the positioning frame and sends an electric signal to the PLC controller, the PLC controller controls the micro suction pump in the environmental protection mechanism to work according to the received electric signal, and then the environmental protection mechanism sucks the external air through the filter screen and the rectangular air inlet, the external air is sucked in and carries the welding smoke, the smoke is purified when passing through the composite filter cartridge, and the composite filter cartridge can intercept small particulate matter in the smoke to avoid the unprocessed smoke from spreading and polluting the working environment, the mechanism makes the elevator guide shoe welding positioning device have the function of welding smoke treatment, improves the environmental protection performance of the device, and protects the health of the workers.

[0026] 4、By setting the weld and timely preheating mechanism, in the elevator shoe welding process, according to the material quality characteristics of the roller support and the base plate, the temperature range of the weld preheating is set in advance through the touch control screen to the PLC controller, after the touch switch sends the electric signal to the PLC controller, the PLC controller not only controls the micro air pump to work, but also controls the electric heating coil in the weld timely preheating mechanism to work, the air discharged by the micro air pump is heated at the weld timely preheating mechanism, so that the temperature of the air meets the preset weld preheating temperature range, the heated air is sprayed to the weld position of the elevator shoe to be welded through the L-shaped hard pipe and the universal air nozzle, the weld is rotated to the welding head of the welding equipment, after the weld of the elevator shoe is preheated, the cooling speed of the welded metal liquid can be delayed, the formation of hardened structure in the weld bevel area can be avoided, the thermal stress in the weld area can be released, and then the cold crack defects in the weld can be prevented, at the same time, the preheating can improve the fluidity of the weld pool and the carrying capacity of the weld, and the uniform temperature field can reduce the deformation of the weld after welding, ensure the parallelism of the roller support and the guide rail, improve the quality of the elevator shoe welding processing, and ensure the safety of the subsequent use of the elevator. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic view of an elevator shoe welding positioning equipment provided by the application.

[0028] Figure 2 It is a structural schematic view of a support positioning mechanism in an elevator shoe welding positioning equipment provided by the application.

[0029] Figure 3 It is a structural schematic view of an L-shaped positioning plate part in an elevator shoe welding positioning equipment provided by the application.

[0030] Figure 4 It is a structural schematic view of a connecting pipe part in an elevator shoe welding positioning equipment provided by the application.

[0031] Figure 5 It is a structural schematic view of a driving mechanism in an elevator shoe welding positioning equipment provided by the application.

[0032] Figure 6 It is a structural schematic view of a positioning frame part in an elevator shoe welding positioning equipment provided by the application.

[0033] Figure 7 It is a structural schematic view of an environmental protection mechanism part in an elevator shoe welding positioning equipment provided by the application.

[0034] Figure 8 It is a structural schematic view of a weld timely preheating mechanism part in an elevator shoe welding positioning equipment provided by the application.

[0035] In the figure: 1 bottom plate, 2 support plate, 3 rolling bearing, 4 support positioning mechanism, 41 first electric push rod, 42 pressing plate, 43 L-shaped fixing block, 44 positioning frame, 45 second electric push rod, 46 connecting block, 47 U-shaped auxiliary support pressing block, 5 driving mechanism, 51 small servo motor, 52 gear, 53 outer tooth ring, 6 environmental protection mechanism, 61 dust collecting box, 62 partition, 63 filter screen cylinder, 64 composite filter element cylinder, 65 connecting cover, 66 micro suction pump, 67 exhaust pipe, 68 filter screen, 7 weld and preheating mechanism, 71 heat insulation cylinder, 72 electric heating coil, 73 L-shaped hard pipe, 74 temperature sensor, 75 omnidirectional air jet nozzle, 8 rectangular air inlet hole, 9 U-shaped handle, 10 connecting pipe, 11 L-shaped positioning plate, 12 plate-shaped positioning groove, 13 L-shaped fixed plate, 14 U-shaped anti-skid rubber block, 15 positioning side block, 16 touch pressure switch, 17 support rod, 18 rubber pressing sleeve, 19 PLC controller, 20 touch control screen, 21 conductive slip ring, 22 wire slot. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] As Figures 1-8 shown, an elevator guide shoe welding positioning device includes a bottom plate 1, the upper surface of the bottom plate 1 is fixedly connected with a support plate 2, a circular hole is formed in the outer wall of the support plate 2, and the hole wall of the circular hole is fixedly connected with a rolling bearing 3, the inner wall of the rolling bearing 3 is fixedly connected with a connecting pipe 10, the side end of the connecting pipe 10 is fixedly connected with an L-shaped positioning plate 11, the vertical part of the L-shaped positioning plate 11 is provided with a plate-shaped positioning groove 12, the shape of the plate-shaped positioning groove 12 is consistent with the shape of the base plate of the rolling guide shoe, so as to ensure the stable positioning of the base plate during welding, the upper surface of the horizontal part of the L-shaped positioning plate 11 is fixedly connected with a support rod 17, and the rod wall of the support rod 17 is fixedly sleeved with a rubber pressing sleeve 18 matched with the plate-shaped positioning groove 12.

[0038] The upper surface of the horizontal part of the L-shaped positioning plate 11 is fixedly connected with a support positioning mechanism 4. The support positioning mechanism 4 comprises a first electric push rod 41 fixedly connected with the upper surface of the horizontal part of the L-shaped positioning plate 11. The top end of the moving part of the first electric push rod 41 is fixedly connected with a pressing plate 42. The outer wall of the fixed part of the first electric push rod 41 is fixedly sleeved with an L-shaped fixed block 43. The upper surface of the L-shaped fixed block 43 is fixedly connected with a positioning frame 44. The bottom end of the L-shaped fixed block 43 is fixedly embedded with a second electric push rod 45. The moving end of the second electric push rod 45 is fixedly connected with a connecting block 46. The connecting hole of the connecting block 46 is fixedly connected with a U-shaped auxiliary support pressing block 47 through a bolt. The inner wall of the U-shaped auxiliary support pressing block 47 is fixedly provided with a U-shaped anti-skid rubber block 14. The outer walls on both sides of the pressing plate 42 are both fixedly connected with positioning side blocks 15. The lower surface of one of the positioning side blocks 15 is fixedly connected with a touch switch 16. The button end of the touch switch 16 is located directly above the positioning frame 44. This mechanism can realize rapid positioning for welding.

[0039] The outer wall of the support plate 2 is fixedly connected with a driving mechanism 5. The driving mechanism 5 comprises a small servo motor 51 fixedly connected with the upper surface of the support plate 2. The output end of the small servo motor 51 penetrates through the reserved hole of the support plate 2 and is fixedly connected with a gear 52. The outer wall of the connecting pipe 10 is fixedly sleeved with an external tooth ring 53 which is in mesh with the outer wall of the gear 52. The gear number ratio of the gear 52 to the external tooth ring 53 is 1:1. The stable transmission is ensured through the matching gear number ratio, so as to ensure that the driving speed of the driving mechanism 5 driving the connecting pipe 10 is synchronous with the output end rotating speed of the small servo motor 51.

[0040] The lower surface of the bottom plate 1 is fixedly connected with two L-shaped fixed plates 13. The lower surface of the bottom plate 1 is fixedly connected with an environmental protection mechanism 6. The environmental protection mechanism 6 comprises a dust collection box 61 fixedly connected with the lower surface of the bottom plate 1. The inner wall of the dust collection box 61 is fixedly connected with a partition plate 62. The surface of the partition plate 62 is fixedly embedded with a filter screen cylinder 63. The outer wall of the filter screen cylinder 63 movably sleeved with a composite filter element cylinder 64. The outer wall of the dust collection box 61 is provided with a threaded hole which is in threaded sealing connection with a connecting cover 65. The inner wall of the connecting cover 65 is fixedly connected with the side end outer wall of the composite filter element cylinder 64. The side wall of the composite filter element cylinder 64 is in sealing contact with the outer wall of the partition plate 62. The inner wall of the dust collection box 61 is fixedly connected with a micro suction pump 66. The output end of the micro suction pump 66 is fixedly communicated with an exhaust pipe 67. The air inlet hole of the dust collection box 61 is fixedly connected with a filter screen 68 which is located inside the rectangular air inlet hole 8.

[0041] The top end of the environmental protection mechanism 6 is provided with a fixing hole, and the hole wall of the fixing hole is fixedly connected with a welding seam and timely preheating mechanism 7. The welding seam and timely preheating mechanism 7 comprises a heat insulation cylinder 71 fixedly embedded with the dust collecting box 61. The top end of the heat insulation cylinder 71 is fixedly embedded with an electric heating coil 72. The output end of the exhaust pipe 67 is fixedly communicated with the bottom end of the heat insulation cylinder 71. The top end of the heat insulation cylinder 71 is fixedly communicated with an L-shaped hard pipe 73. The pipe wall of the L-shaped hard pipe 73 is fixedly communicated with a temperature sensor 74. The output end of the L-shaped hard pipe 73 is fixedly communicated with a universal air jet nozzle 75.

[0042] The upper surface of the bottom plate 1 is provided with a rectangular air inlet hole 8 matched with the air inlet end of the environmental protection mechanism 6. The upper surface of the bottom plate 1 is also provided with a through hole matched with the welding seam and timely preheating mechanism 7.

[0043] The outer wall of the connecting cover 65 is fixedly connected with a U-shaped handle 9. The outer wall of one of the L-shaped fixed plates 13 is provided with a through hole round hole matched with the connecting cover 65. The outer wall of the other L-shaped fixed plate 13 is fixedly connected with a PLC controller 19. The outer wall of the PLC controller 19 is fixedly connected with a touch control screen 20. The inner wall of the connecting pipe 10 is fixedly connected with a conductive slip ring 21. The side end of the connecting pipe 10 close to the L-shaped positioning plate 11 is provided with a wire slot 22. The touch control screen 20, the touch switch 16 and the temperature sensor 74 are all electrically connected with the input end of the PLC controller 19 through wires. The micro air suction pump 66, the first electric push rod 41, the second electric push rod 45, the small servo motor 51 and the electric heating coil 72 are all electrically connected with the output end of the PLC controller 19 through wires. The conductive slip ring 21 can make the first electric push rod 41 and the second electric push rod 45 still work normally in the rotating state. The above-mentioned electrical equipment and electrical connection relationship are all prior art, and will not be described here.

[0044] The operation principle of the present application is described as follows: when the roller support in the elevator roller guide shoe needs to be welded and positioned with the base plate, first, the base plate is placed into the plate-shaped positioning groove 12 of the L-shaped positioning plate 11, at this time, the rubber pressing sleeve 18 on the supporting rod 17 is in contact with the outside of the base plate and extrudes and positions the base plate, and since the shape of the plate-shaped positioning groove 12 matches the base plate, the accurate positioning requirement of the base plate can be met, then the roller support is placed on the L-shaped fixing block 43, and the side end of the roller support is positioned in the positioning frame 44, the inner wall shape of the positioning frame 44 is consistent with the shape of the side end of the roller support, so that the accurate positioning of the roller support can be completed, and the end of the roller support away from the positioning frame 44 is accurately attached to the base plate, so that the welding position is also accurately positioned, then the staff controls the first electric push rod 41 to work through the touch control screen 20, the moving part of the first electric push rod 41 is retracted, the moving end of the first electric push rod 41 drives the pressing plate 42 to move downward, the roller support is positioned, and the positioning side blocks 15 on both sides of the pressing plate 42 are placed on both sides of the roller support, so as to further constrain the roller support and ensure that the positioning state does not change any more, thereby ensuring the stability of the positioning;

[0045] If the side end of the roller support also needs to be welded with a reinforcing rib plate or a vice support, the reinforcing rib plate or the vice support can be placed into the U-shaped anti-skid rubber block 14, then the second electric push rod 45 is controlled to work through the touch control screen 20: the moving end of the second electric push rod 45 extends outward, the U-shaped vice support pressing block 47 is pushed to move through the connecting block 46, and the reinforcing rib plate or the vice support is attached to the base plate to complete the positioning. This device can quickly and conveniently complete the positioning work of the elevator guide shoe parts before welding, and the whole process does not need the staff to measure and mark the position, which not only improves the efficiency of welding and positioning and reduces the labor intensity of the staff, but also improves the accuracy of welding and positioning, thereby ensuring the reliability of the subsequent use of the elevator guide shoe.

[0046] Then the staff welds the positioned elevator guide shoe through the welding equipment, so as to ensure the reliable welding quality of the roller support and the base plate, and in the process of welding the elevator guide shoe, the staff can also control the small servo motor 51 to work through the touch control screen 20 and the PLC controller 19, the driving end of the small servo motor 51 slowly rotates, the connecting pipe 10 is slowly rotated through the gear 52 and the outer gear ring 53, the L-shaped positioning plate 11 is slowly rotated through the connecting pipe 10, and the L-shaped positioning plate 11 rotating can rotate the welding position of the elevator guide shoe on the lower side to the upper side, which not only facilitates the welding work of the staff, but also enables the molten metal generated in the welding to fully flow into the deep part of the weld under the action of gravity, thereby improving the firmness and quality of the welding;

[0047] When the pressing plate 42 limits the position of the roller support, the touch switch 16 under the positioning side block 15 is in contact with the positioning frame 44, the positioning frame 44 presses the movable button of the touch switch 16, the circuit of the touch switch 16 is turned on, and an electrical signal is sent to the PLC controller 19. The PLC controller 19 controls the micro suction pump 66 to work according to the received electrical signal, the air inlet end of the micro suction pump 66 sucks the air in the dust collection box 61 through the filter screen cylinder 63 and the composite filter element cylinder 64, so that a negative pressure environment is formed in the dust collection box 61. Then, the dust collection box 61 under negative pressure sucks external air through the filter screen 68 and the rectangular air inlet hole 8 to maintain air pressure balance. When the external air is sucked in, it will carry the welding smoke. The smoke is purified when passing through the composite filter element cylinder 64. The composite filter element cylinder 64 can trap small particulate matter in the smoke to prevent untreated smoke from spreading and polluting the working environment. This mechanism enables the elevator shoe welding positioning device to have a welding smoke treatment function, improves the environmental performance of the device, and protects the health of the workers.

[0048] During the welding process of the elevator shoe, the temperature range (for example, 150℃-160℃) of the pre-heating of the welding seam can be pre-set by the touch control screen 20 to the PLC controller 19 according to the material characteristics of the roller support and the base plate. After the touch switch 16 sends an electrical signal to the PLC controller 19, the PLC controller 19 not only controls the micro suction pump 66 to work, but also controls the electric heating coil 72 to work. The air sucked by the micro suction pump 66 is discharged into the heat insulation cylinder 71 through the exhaust pipe 67 and is heated by the electric heating coil 72 in the heat insulation cylinder 71. The heated air is preheated by the L-shaped hard pipe 73 and the universal air nozzle 75 and sprayed to the welding seam position of the elevator shoe to be welded. The temperature of the hot air in the L-shaped hard pipe 73 is detected by the temperature sensor 74, which converts the detected temperature into an electrical signal and sends it to the PLC controller 19. If the detected temperature is higher than the pre-set range, the PLC controller 19 reduces the heating power of the electric heating coil 72 to avoid overheating of the hot air and reduce energy consumption. If the detected temperature is lower than the pre-set range, the PLC controller 19 increases the power of the electric heating coil 72 to ensure that the temperature of the hot air in the L-shaped hard pipe 73 meets the requirements. The hot air sprayed by the universal air nozzle 75 can preheat the welding seam position in time. The welding seam rotates with the elevator shoe to the welding head of the welding equipment, so that the preheated welding seam can be welded immediately. After the welding seam of the elevator shoe is preheated, the cooling speed of the welding metal liquid can be slowed down to avoid the formation of hardened structure in the welding seam groove area, release the thermal stress of the welding seam area, and prevent cold cracking defects in the welding seam. At the same time, preheating can improve the fluidity of the welding pool to avoid un-melted defects, improve the load-carrying capacity of the welding seam, and reduce the deformation of the welding seam after welding to ensure the parallelism of the roller support and the guide rail, avoid abnormal noise and large vibration of the elevator shoe during use, improve the quality of the elevator shoe welding process, and ensure the safety of the subsequent use of the elevator.

[0049] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An elevator shoe welding positioning apparatus comprising a base plate (1), characterized in that, The upper surface of the bottom plate (1) is fixedly connected with a supporting plate (2), the outer wall of the supporting plate (2) is provided with a circular hole, and the hole wall of the circular hole is fixedly connected with a rolling bearing (3); the inner wall of the rolling bearing (3) is fixedly connected with a connecting pipe (10); The side end of the connecting pipe (10) is fixedly connected with an L-shaped positioning plate (11), the vertical part of the L-shaped positioning plate (11) is provided with a plate-shaped positioning groove (12) on the outer wall, and the upper surface of the horizontal part of the L-shaped positioning plate (11) is fixedly connected with a bracket positioning mechanism (4); The outer wall of the supporting plate (2) is fixedly connected with a driving mechanism (5); The lower surface of the bottom plate (1) is fixedly connected with two L-shaped fixed plates (13), and the lower surface of the bottom plate (1) is fixedly connected with an environmental protection mechanism (6); The top end of the environmental protection mechanism (6) is provided with a fixed hole, and the hole wall of the fixed hole is fixedly connected with a welding seam and time preheating mechanism (7); The upper surface of the bottom plate (1) is provided with a rectangular air inlet hole (8) matched with the air inlet end of the environmental protection mechanism (6), and the upper surface of the bottom plate (1) is also provided with a through hole matched with the welding seam and time preheating mechanism (7); The bracket positioning mechanism (4) comprises a first electric push rod (41) fixedly connected with the upper surface of the horizontal part of the L-shaped positioning plate (11), the moving part of the first electric push rod (41) is fixedly connected with a pressing plate (42), the outer wall of the fixed part of the first electric push rod (41) is fixedly sleeved with an L-shaped fixed block (43), the upper surface of the L-shaped fixed block (43) is fixedly connected with a positioning frame (44), the bottom end of the L-shaped fixed block (43) is fixedly embedded with a second electric push rod (45), the moving end of the second electric push rod (45) is fixedly connected with a connecting block (46), and the connecting hole of the connecting block (46) is fixedly connected with a U-shaped auxiliary support pressing block (47) through a bolt; The inner wall of the U-shaped auxiliary support pressing block (47) is fixedly connected with a U-shaped anti-skid rubber block (14), the outer walls of the two sides of the pressing plate (42) are fixedly connected with positioning side blocks (15), the lower surface of one of the positioning side blocks (15) is fixedly connected with a touch switch (16), and the button end of the touch switch (16) is located directly above the positioning frame (44); The driving mechanism (5) comprises a small servo motor (51) fixedly connected with the upper surface of the supporting plate (2), the output end of the small servo motor (51) passes through the reserved hole of the supporting plate (2) and is fixedly connected with a gear (52), and the outer wall of the connecting pipe (10) is fixedly sleeved with an external gear ring (53) which is in mesh with the outer wall of the gear (52). The weld seam and time preheating mechanism (7) includes a heat insulation cylinder (71) fixedly embedded with the dust collection box (61) of the environmental protection mechanism, the top end of the heat insulation cylinder (71) is fixedly embedded with an electric heating coil (72), the output end of the exhaust pipe (67) of the environmental protection mechanism is fixedly communicated with the bottom end of the heat insulation cylinder (71), the top end of the heat insulation cylinder (71) is fixedly communicated with an L-shaped hard pipe (73), the pipe wall of the L-shaped hard pipe (73) is fixedly communicated with a temperature sensor (74), and the output end of the L-shaped hard pipe (73) is fixedly communicated with a universal air jet nozzle (75).

2. An elevator shoe welding positioning apparatus according to claim 1, characterized in that, The upper surface of the horizontal part of the L-shaped positioning plate (11) is fixedly connected with a supporting rod (17), and the rod wall of the supporting rod (17) is fixedly sleeved with a rubber pressure sleeve (18) matched with the plate-shaped positioning groove (12).

3. The elevator shoe welding positioning apparatus of claim 1, wherein, The environmental protection mechanism (6) includes a dust collection box (61) fixedly connected with the lower surface of the bottom plate (1), the inner wall of the dust collection box (61) is fixedly connected with a partition plate (62), the surface of the partition plate (62) is fixedly embedded with a filter screen cylinder (63), the outer wall of the filter screen cylinder (63) is movably sleeved with a composite filter element cylinder (64), the outer wall of the dust collection box (61) is provided with a threaded hole, and the hole wall of the threaded hole is threadedly and sealingly connected with a connecting cover (65), the inner wall of the connecting cover (65) is fixedly connected with the outer wall of the side end of the composite filter element cylinder (64), the side wall of the composite filter element cylinder (64) is sealingly contacted with the outer wall of the partition plate (62), the inner wall of the dust collection box (61) is fixedly connected with a micro suction pump (66), the output end of the micro suction pump (66) is fixedly communicated with an exhaust pipe (67), and the air inlet hole of the dust collection box (61) is fixedly connected with a filter screen (68).

4. An elevator shoe welding fixture according to claim 3, wherein The outer wall of the connecting cover (65) is fixedly connected with a U-shaped handle (9), and the outer wall of one of the L-shaped fixed plates (13) is provided with a through-hole round hole matched with the connecting cover (65).

5. An elevator shoe welding fixture as defined in claim 4 wherein, The outer wall of the L-shaped fixed plate (13) is fixedly connected with a PLC controller (19), the outer wall of the PLC controller (19) is fixedly connected with a touch control screen (20), the inner wall of the connecting pipe (10) is fixedly connected with a conductive slip ring (21), and the side end of the connecting pipe (10) close to the L-shaped positioning plate (11) is provided with a wire slot (22).

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