A welding clamping mechanism for metal parts of an elevator car

Abstract

This invention discloses a welding clamping mechanism for metal parts of an elevator car, belonging to the field of elevator car metal part welding technology. It comprises a clamping mechanism one and a clamping mechanism two assembled on the outer surface side of the clamping mechanism one, with a welding robot arm mounted on the rear side of the outer surface of the clamping mechanism one. It includes a support frame installed at the middle of the upper surface of the clamping mechanism one, with a base plate connected to the upper surface of the support frame. This elevator car metal part welding clamping mechanism, with clamping mechanism one and clamping mechanism two assembled sequentially, facilitates alternating welding, saving material loading time. Side clamps, positioning components one and two limit and compress side rods one and two, improving the stability of the base plate during welding and preventing displacement. In conjunction with a heat-absorbing mechanism on the support frame, it performs heat absorption and cooling treatment based on the weld point position of the base plate, and works synchronously with a gas cooling system that can be linked.

Description

Technical Field

[0001] This invention relates to the field of welding technology for metal parts of elevator cars, specifically to a welding clamping mechanism for metal parts of elevator cars. Background Technology

[0002] When welding elevator car metal parts, a welding clamping mechanism is used to position the elevator car metal parts. Positioning enables assembly line welding, improves the stability of the welding work, and increases welding efficiency. However, during use, it is inconvenient to control the positioning accuracy, which affects the effect of welding clamping and positioning.

[0003] To overcome the above-mentioned defects, existing technology (Chinese patent application No. CN202121511931.X, application date 2021-07-05) provides an elevator car base splicing fixture, which, through a first fixture plate, a second fixture plate, a first suction cup, and a second suction cup, both of which are pneumatic suction cups, and the included angle between the first fixture plate and the second fixture plate is 90 degrees, can perform positioning and auxiliary feeding of the elevator car plate, facilitating the splicing of the elevator car base, with high installation accuracy and convenient operation; and existing technology (application No. CN202020552487.5, application date 2021-07-05) provides a tooling for assembling an elevator car base. (Chinese patent application date: April 15, 2020) An elevator car panel welding positioning fixture is provided, comprising a first L-shaped support seat, a second L-shaped support seat, a third L-shaped support seat, and a fourth L-shaped support seat fixed in four directions on a rectangular support plate; a first electric push rod is fixed on the first L-shaped support seat; a buffer limiting component is fixed to the telescopic end of the first electric push rod; a second electric push rod is fixed on the second L-shaped support seat; a buffer limiting component is fixed to the telescopic end of the second electric push rod; and prior art (Chinese patent application number CN202020587777.3, application date: April 20, 2020) for clamping elevator car panels during welding. The structure includes a second clamping structure fixed to the slider; the slider is fixedly connected to the base through a first through hole, a second through hole, and a fixing steel rope; the second clamping structure is connected to the slider through two fastening screws; a fixing block is welded onto the linear slide rail; both the first and second clamping structures include limit seats, a base plate, a first rubber pad, and limit studs; four limit seats are fixed to the base plate; limit studs are provided on the limit seats; on the one hand, the first car panel and the second car panel are fixed to the two base plates respectively by several tension and loosening limit studs to prevent the first car panel and the second car panel from loosening; on the other hand, the fixing block is welded to the linear slide rail. The upper slider is fixed to the base by a fixed steel rope to prevent the first and second clamping structures from loosening, which would lead to the first and second car plates loosening, resulting in poor welding effect. The overall structure is relatively firm and has a good fixing effect. Although the existing technology can complete the positioning and clamping, it is inconvenient to make adaptive adjustments according to different elevator car base sizes during operation. It is also difficult to ensure accuracy when positioning the welded parts of the base plate and base frame. It also affects the synchronous positioning of the equidistant auxiliary support parts, and the heat generated by welding is difficult to eliminate, affecting the overall welding stability and easily causing slight misalignment during the welding process.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing welding and clamping mechanism for metal parts in elevator cars. Summary of the Invention

[0005] The purpose of this invention is to provide a welding clamping mechanism for metal parts of an elevator car, in order to solve the problems mentioned in the background art, such as the inconvenience of adaptive adjustment according to the size of different elevator car bases during operation, the difficulty in ensuring accuracy when positioning the welded parts of the base plate and base frame, the impact on the synchronous positioning of the equidistant auxiliary support parts, the difficulty in eliminating the heat generated during welding, the impact on the overall welding stability, and the easy occurrence of slight misalignment during the welding process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding clamping mechanism for metal parts of an elevator car, comprising a clamping mechanism one and a clamping mechanism two assembled on the outer surface side of the clamping mechanism one, and a welding robot arm provided on the rear side of the outer surface of the clamping mechanism one; comprising: a support frame installed at the middle of the upper surface of the clamping mechanism one, and a base plate connected to the upper surface of the support frame, and the clamping mechanism one limiting the base plate by a central clamping mechanism; a movable frame slidably connected to the inner surface of the clamping mechanism one, and a side rod one positioned by a telescopic compression mechanism; a positioning component two being quickly installed and removed from the movable frame; a heat-absorbing frame slidably connected to the inner surface of the support frame, and a heat-absorbing component slidably connected to the inner surface of the heat-absorbing frame, for absorbing heat along with the weld joint to avoid high-temperature stress deformation; and the clamping mechanism one being used for staged cooling through a linkage ventilation mechanism.

[0007] Preferably, the centering clamping mechanism further includes a turntable rotatably connected to the inner surface of the clamping mechanism, and a telescopic connecting rod rotatably connected to the outer surface of the turntable via an off-axis. A movable rod is rotatably connected to the other end of the outer surface of the telescopic connecting rod, and the movable rod is limited to slide on the inner surface of the clamping mechanism. At the same time, a side clamp is quickly attached and detached to the upper surface of the movable rod, and a protective sleeve is nested on the outer surface of the side clamp.

[0008] Preferably, the clamping mechanism forms a circumferential linear movement structure with the turntable and the telescopic link and the moving rod, and the telescopic link and the moving rod form an elastic pulling structure, and the moving rod and the side clamp form a quick-release locking structure, while the side clamp forms a compression limiting structure with the base plate through the protective sleeve.

[0009] Preferably, the telescopic compression mechanism further includes a telescopic component assembled on the upper surface of the movable frame, and a limiting plate assembled on the lower surface of the telescopic component. A quick-release component is engaged with the inner surface of the limiting plate, and an unlocking component is slidably connected to the inner surface of the quick-release component. The movable frame forms a telescopic structure through the telescopic component and the limiting plate, and the limiting plate and the quick-release component form a limiting engagement structure, while the quick-release component and the unlocking component form a limiting sliding structure.

[0010] Preferably, the inner surface of the unlocking component is obliquely slidably connected to a pressing rod, and the other end of the outer surface of the pressing rod is fitted with a pressing element, which limits the pressing element to rise and fall on the inner surface of the quick-release component. The oblique surface of the pressing element is nested and slidably connected to a locking element, which limits and engages with the inner surface of the limiting plate. At the same time, a return spring is elastically connected between the pressing element and the quick-release component. The quick-release component forms an oblique pressing structure with the pressing element through the unlocking component and the pressing rod, and the pressing element forms an oblique pressing engaging structure with the limiting plate through the locking element. The pressing element forms an elastic rising and falling structure with the quick-release component through the return spring.

[0011] Preferably, the inner surface of the quick-release component is connected to a nested component, and the lower side of the outer surface of the nested component is nested with a positioning component one. A compression spring is connected between the positioning component one and the quick-release component, and the compression spring passes through the outer surface of the nested component. At the same time, an elastic component is elastically engaged with the outer surface of the nested component, and the lower surface of the positioning component one is positioned and compressed with side rod one and side rod two. The quick-release component and the nested component form a nested sliding structure, and the nested component forms a rotational engagement structure with the positioning component one through the elastic component. The quick-release component forms an elastic sliding structure with the positioning component one through the compression spring, and the positioning component one forms a compression structure with side rod one and side rod two. The inner surface of the limiting plate is nested with a positioning component two, and an electromagnetic suction component is installed on the upper surface of the limiting plate. An auxiliary rod is compressed with the lower surface of the positioning component two, and the auxiliary rod is assembled on the upper side of the base plate. The limiting plate forms a magnetic nesting structure with the positioning component two through the electromagnetic suction component, and the positioning component two forms a compression structure with the auxiliary rod.

[0012] Preferably, the inner surface of the support frame is rotatably connected to a threaded rod, and the outer surface of the threaded rod is threadedly connected to a heat-absorbing frame, which limits and slides on the inner surface of the support frame. The inner surface of the heat-absorbing frame is rotatably connected to a threaded rod, and the outer surface of the threaded rod is threadedly connected to a heat-absorbing element, which limits and slides on the inner surface of the heat-absorbing frame. The support frame and the heat-absorbing frame form a transverse sliding structure through the threaded rod, and the heat-absorbing frame and the heat-absorbing element form a longitudinal sliding structure through the threaded rod.

[0013] Preferably, a moving block is slidably connected to the inner surface of the heat-absorbing element, and a heat-absorbing component is installed on the outer surface of the moving block. A return spring is elastically connected between the moving block and the heat-absorbing element. A circulation component is nested on the inner surface of the heat-absorbing component, and circulating liquid baffles are evenly arranged on the inner surface of the circulation component. A circulation pipe is installed on the outer surface of the circulation component, and a cooling component is installed on one side of the circulation pipe. The heat-absorbing element and the heat-absorbing component form an elastic lifting structure through the return spring and the moving block. The upper cross section of the outer surface of the heat-absorbing component is an isosceles trapezoidal structure. The heat-absorbing component and the circulation component form a nested structure. The circulation component and the baffles form an integrated structure. The circulation component and the cooling component form a circulation structure through the circulation pipe. The heat-absorbing component is made of a fast-absorbing heat material.

[0014] Preferably, the linkage ventilation mechanism further includes a fixed frame mounted on the outer surface of the clamping mechanism, and the clamping mechanism is connected to a driver through an assembled circulation pipe. The inner surface of the driver is rotatably connected to a turbine, and the outer surface of the turbine is mounted with a circulation threaded rod. The outer surface of the circulation threaded rod is rotatably connected to a cooling air chamber, which is used to control the gas in the cooling air chamber to be discharged in linkage with the liquid in the circulation pipe. The inner surface of the cooling air chamber is connected to a compression plate through the circulation threaded rod, and the outer surface of the cooling air chamber is mounted with alternating air inlet pipes and alternating air outlet pipes, which are used for the two sets of cooling air chambers arranged above and below to alternately exhaust and inlet air, so as to prevent the cooling air from stopping.

[0015] Preferably, an output air pipe is installed on the outer surface of the alternating air outlet pipe, and a toothed gear is installed at the rear end of the outer surface of the circulating threaded rod. A spur gear is meshed with the outer surface of the toothed gear, and a rotating shaft is installed on the outer surface of the spur gear. The rotating shaft is positioned and rotated on the fixed frame, and an elastic damping is connected between the rear side of the outer surface of the rotating shaft and the fixed frame to prevent the rotating shaft from rotating in the opposite direction. A cam is installed on the outer surface of the rotating shaft, and a gas distribution pipe is installed on the outer surface of the output air pipe. A controller is installed on the outer surface of the gas distribution pipe, and a release block is elastically connected to the inner surface of the controller. A cam is connected to the end of the outer surface of the release block. The cam controls the release of gas by the release block and is used for gas diversion. A cooling head is installed on the outer surface of the gas distribution pipe, and the gas distribution pipe and the cooling head are nested on the upper side of the inner surface of the support frame for cooling the bottom side of the base plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The elevator car metal component welding clamping mechanism is equipped with clamping mechanism one and clamping mechanism two assembled in sequence, which facilitates alternating welding and saves material loading time. The side clamps, positioning parts one and two limit and compress the side rods one and two, improve the stability of the base plate during the welding process, and prevent displacement. In conjunction with the heat absorption mechanism on the support frame, the heat absorption and cooling treatment is carried out in linkage control according to the welding point position of the base plate, and works synchronously with the gas cooling that can be linked.

[0018] 2. The elevator car metal component welding clamping mechanism is equipped with a central clamping mechanism. This allows for uniform elastic clamping and limiting based on the width of the base plate when the telescopic connecting rod, assembled via a turntable, drives the sliding adjustment of the moving rod. The clamping stability is further enhanced by the cooperation of detachable side clamps and protective sleeves. Furthermore, a telescopic compression mechanism is included. A single-sided independently sliding moving frame controls the position of the limiting plate of the telescopic component adjustment. This allows for effective nesting and limiting of side rods one and two via positioning element one on the quick-release component, improving positioning accuracy. The quick-release component is stably engaged with the limiting plate via a locking mechanism, improving assembly convenience. Additionally, an electromagnetic suction component assembled on the limiting plate effectively assembles positioning element two at equal intervals, controlling the stability of the positioning element two assembly and effectively limiting the auxiliary rod, improving the contact stability between the auxiliary rod and the base plate, and enhancing the accuracy of welding between the two, preventing warping.

[0019] 3. The welding clamping mechanism for the metal parts of the elevator car is equipped with a support frame for flat support. During the welding process, the position of the heat-absorbing components assembled on the heat-absorbing frame can be effectively controlled according to the position of the weld point, so that they can absorb heat along with the weld point, reduce the thermal stress caused by heat on the base plate, improve the stability of the base plate, and facilitate the movement of the circulating components assembled on the heat-absorbing components at the bottom of the support frame to avoid jamming during heat absorption and improve the heat absorption contact effect. The circulating pipe drives the liquid to drive the gas distribution control device and simultaneously starts the cooling gas delivery mechanism to improve the gas delivery effect and increase the cooling effect of the base plate. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the clamping mechanism of the present invention;

[0021] Figure 2 This is a half-section three-dimensional structural schematic diagram of the clamping mechanism of the present invention;

[0022] Figure 3 This is a partial cross-sectional perspective view of the clamping mechanism of the present invention.

[0023] Figure 4 This is a partial cross-sectional three-dimensional structural schematic diagram of the mobile frame of the present invention;

[0024] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the limiting plate of the present invention;

[0025] Figure 6 This is a partial cross-sectional three-dimensional structural schematic diagram of the positioning component two of the present invention;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the support frame of the present invention;

[0027] Figure 8 This is a partial cross-sectional three-dimensional structural schematic diagram of the support frame of the present invention;

[0028] Figure 9 This is a partial cross-sectional three-dimensional structural schematic diagram of the heat-absorbing element of the present invention;

[0029] Figure 10 This is a partial cross-sectional three-dimensional structural diagram of the cooling air chamber of the present invention;

[0030] Figure 11 This is a partial cross-sectional three-dimensional structural diagram of the gas distribution tube of the present invention.

[0031] In the diagram: 1. Clamping Mechanism 1; 2. Clamping Mechanism 2; 3. Welding Robot; 4. Support Frame; 5. Base Plate; 6. Turntable; 7. Telescopic Link; 8. Moving Rod; 9. Side Clamp; 10. Protective Cover; 11. Moving Frame; 12. Telescopic Assembly; 13. Limiting Plate; 14. Quick Release Component; 15. Unlocking Component; 16. Pressing Rod; 17. Pressing Component; 18. Locking Component; 19. Return Spring 1; 20. Nested Component; 21. Positioning Component 1; 22. Pressing Spring; 23. Elastic Component; 24. Side Rod 1; 25. Side Rod 2; 26. Auxiliary Rod; 27. Positioning Component 2; 28. Electromagnetic Attraction Component; 29. ​​Threaded Rod 1 30. Heat absorption frame; 31. Threaded rod II; 32. Heat absorption component; 33. Moving block; 34. Heat absorption assembly; 35. Return spring II; 36. Circulation component; 37. Partition plate; 38. Circulation pipe; 39. Refrigeration assembly; 40. Fixing frame; 41. Driver; 42. Turbine; 43. Circulation threaded rod; 44. Cooling air chamber; 45. Extrusion plate; 46. Alternating air inlet pipe; 47. Alternating air outlet pipe; 48. Output air pipe; 49. Gear with missing teeth; 50. Spur gear; 51. Rotating shaft; 52. Elastic damping; 53. Cam; 54. Controller; 55. Release block; 56. Air distribution pipe; 57. Cooling head. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-11 The present invention provides a technical solution: a welding clamping mechanism for metal parts of an elevator car, comprising a clamping mechanism 1 and a clamping mechanism 2 assembled on the outer surface side of the clamping mechanism 1, and a welding robot 3 is provided on the rear side of the outer surface of the clamping mechanism 1.

[0034] Example 1: As Figures 1-3 The present invention provides the following technical solution: a welding clamping mechanism for metal parts of an elevator car, comprising: a support frame 4, installed at the middle of the upper surface of a clamping mechanism 1, with a base plate 5 connected to the upper surface of the support frame 4, and the clamping mechanism 1 limiting the base plate 5 through a central clamping mechanism; a movable frame 11 slidably connected to the inner surface of the clamping mechanism 1, with a side rod 24 positioned on the movable frame 11 through a telescopic pressing mechanism; a positioning component 27 that can be quickly installed and removed from the movable frame 11; a heat-absorbing frame 30 slidably connected to the inner surface of the support frame 4, with a heat-absorbing component 32 slidably connected to the inner surface of the heat-absorbing frame 30 for absorbing heat along with the weld joint to avoid high-temperature stress deformation; and the clamping mechanism 1 using a linkage ventilation mechanism for staged cooling. Figure 3 As shown, the centering clamping mechanism also includes a turntable 6 rotatably connected to the inner surface of the clamping mechanism 1, and a telescopic connecting rod 7 rotatably connected to the outer surface of the turntable 6 via an off-axis. A moving rod 8 is rotatably connected to the other end of the outer surface of the telescopic connecting rod 7, limiting and sliding the moving rod 8 on the inner surface of the clamping mechanism 1. Simultaneously, a side clamp 9 is quickly attached and detached to the upper surface of the moving rod 8, and a protective sleeve 10 is nested on the outer surface of the side clamp 9. Figure 3 As shown, the clamping mechanism 1 forms a circumferential linear movement structure with the turntable 6 and the telescopic link 7 and the moving rod 8, and the telescopic link 7 and the moving rod 8 form an elastic pulling structure, and the moving rod 8 and the side clamp 9 form a quick-release locking structure. At the same time, the side clamp 9 forms a compression limiting structure with the base plate 5 through the protective sleeve 10.

[0035] In use, the clamping mechanism 1 can be used in conjunction with the welding robot 3 for welding. The clamping mechanism 2, which is assembled at the other end of the clamping mechanism 1, is used for pre-positioning assembly. It also facilitates the simultaneous operation of the heat-absorbing liquid and the cooling gas driven by the return of the liquid while welding on the clamping mechanism 1. When the clamping mechanism 1 is in use, the support frame 4 assembled on the clamping mechanism 1 supports the base plate 5. The motor assembled at the bottom of the clamping mechanism 1 is started, and the conveyor shaft drives the turntable 6 to rotate. When the turntable 6 rotates, the telescopic connecting rod 7 is rotated through the installed off-axis. The moving rod 8 connected to the telescopic connecting rod 7 slides on the inner surface of the clamping mechanism 1, thereby controlling the movement of the side clamp 9 assembled on the moving rod 8. This causes the side clamp 9 to drive the protective sleeve 10 to contact the base plate 5, and controls the centering of the base plate 5. When the size of the base plate 5 changes, the position of the moving rod 8 can be controlled by the extension and retraction of the telescopic connecting rod 7, thereby improving the centering control range and increasing the stability of the centering limit.

[0036] Example 2: Figure 4 , Figure 5 and Figure 6 The technical solution shown, based on Embodiment 1, further discloses the accuracy of the nested positioning of metal parts, prevents the edges of the main frame support components from warping, improves positioning stability, and synchronously limits the auxiliary metal parts, improving the stability of contact with the base plate 5 and improving the welding effect. It solves the problem of inconvenient control of the accurate positioning of the base plate 5 and the welded parts of the base frame, and also affects the synchronous positioning of the equidistant auxiliary support components. The specific details are as follows: The telescopic extrusion mechanism also includes a telescopic component 12 assembled on the upper surface of the movable frame 11, and a limit plate 13 assembled on the lower surface of the telescopic component 12. A quick-release component 14 is engaged with the inner surface of the limit plate 13, and an unlocking component 15 is slidably connected to the inner surface of the quick-release component 14. The movable frame 11 forms a telescopic structure through the telescopic component 12 and the limit plate 13, and the limit plate 13 and the quick-release component 14 form a limiting engagement structure, while the quick-release component 14 and the unlocking component 15 form a limiting sliding structure. Figure 5 As shown, a pressing rod 16 is obliquely slidably connected to the inner surface of the unlocking member 15, and a pressing member 17 is installed at the other end of the outer surface of the pressing rod 16, limiting the pressing member 17 to rise and fall on the inner surface of the quick-release member 14. A locking member 18 is nested and slidably connected to the oblique surface of the pressing member 17, limiting and locking the locking member 18 onto the inner surface of the limiting plate 13. Simultaneously, a return spring 19 is elastically connected between the pressing member 17 and the quick-release member 14. The quick-release member 14, through the unlocking member 15 and the pressing rod 16, forms an oblique pressing structure with the pressing member 17. The pressing member 17, through the locking member 18, forms an oblique pressing locking structure with the limiting plate 13. Furthermore, the pressing member 17, through the return spring 19, forms an elastic lifting structure with the quick-release member 14. Figure 5 and Figure 6 As shown, the inner surface of the quick-release component 14 is connected to a nested component 20, and the lower side of the outer surface of the nested component 20 is nested with a positioning component 21. A compression spring 22 is connected between the positioning component 21 and the quick-release component 14, and the compression spring 22 passes through the outer surface of the nested component 20. At the same time, an elastic component 23 is elastically engaged with the outer surface of the nested component 20, and the lower surface of the positioning component 21 is positioned and compressed with a side rod 24 and a side rod 25. The quick-release component 14 and the nested component 20 form a nested sliding structure, and the nested component 20 rotates with the positioning component 21 through the elastic component 23. The quick-release component 14 and the positioning component 21 form an elastic sliding structure through the compression spring 22. At the same time, the positioning component 21, the side rod 24 and the side rod 25 form a compression structure. The inner surface of the limiting plate 13 is nested with the positioning component 27, and the upper surface of the limiting plate 13 is equipped with an electromagnetic suction component 28. The lower surface of the positioning component 27 is compressed and connected with an auxiliary rod 26, and the auxiliary rod 26 is assembled on the upper side of the base plate 5. The limiting plate 13 and the positioning component 27 form a magnetic suction nesting structure through the electromagnetic suction component 28, and the positioning component 27 and the auxiliary rod 26 form a compression structure.

[0037] After the base plate 5 is positioned and assembled, the side rod 24, side rod 25, and auxiliary rod 26 are placed in sequence by a robotic arm. After the positioning is completed, the motors of multiple single-side assembly of the control clamping mechanism 1 are started, and the synchronous belt of the control output shaft assembly drives the lead screw to rotate. This controls the telescopic component 12 to slide within the inner surface of the clamping mechanism 1 through threaded transmission. During the sliding, it works with the existing vision mechanism to follow the positions of positioning component 21 and positioning component 27, and controls the position of the sliding frame 11. After the position of the sliding frame 11 is adjusted, the telescopic component 12 of the adjustment frame 11 controls the limiting plate 1. 3. Move downwards, and during the movement, control the quick-release component 14 assembled by the limiting plate 13, and drive the positioning component 21 assembled on the lower side of the quick-release component 14 to nest and engage the side rod 24 and the side rod 25. When the positioning component 21 is working, the positioning component 21 can be manually rotated and adjusted to a specified angle by the angle of the side rod 24 or the side rod 25. When the positioning component 21 rotates, it will be stably engaged with the outer surface of the nested component 20 inside the positioning component 21 by the elastic element 23 nested inside it, controlling the stability of the engagement between the positioning component 21 and the nested component 20. After the positioning component 21 contacts the metal part, the positioning component 21 will be engaged with the side rod 24 and the side rod 25 by the elastic element 23 nested inside it. The nested component 20 slides within the quick-release component 14 and, in conjunction with the compression spring 22 connecting the quick-release component 14 and the positioning component 21, causes the positioning component 21 to elastically contact the side rod 24 and the side rod 25 for elastic limiting engagement. This prevents damage to the side rods 24 and 25 from compression or misalignment during welding, improving the stability of clamping and limiting. The positioning component 27, assembled from the limiting plate 13 via the electromagnetic suction component 28, synchronously limits the auxiliary rod 26. Furthermore, the height adjustment of the movable frame 11 and the limiting plate 13 allows for clamping and limiting of the side rods 24, 25, and auxiliary rod 26 at different heights. To improve clamping stability, the quick-release component 14 can be quickly replaced according to the shapes of side rod 1 24 and side rod 25. When replacing the quick-release component 14, the unlocking component 15, which is slidably assembled with the squeezing quick-release component 14, is slid inward. This controls the oblique groove opened in the unlocking component 15, causing the squeezing component 17, which is assembled with the squeezing rod 16, to slide downward. This controls the locking component 18, which is obliquely nested and slidably assembled with the squeezing component 17, to slide linearly in the quick-release component 14. This allows the locking component 18 to be disengaged from the inner surface of the limiting plate 13, and the quick-release component 14 to be removed. Different quick-release components 14 can then be replaced for operation, improving the usage effect.

[0038] Example 3: Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11The technical solution shown, based on Embodiment 2, further discloses heat absorption treatment during the welding process, effectively absorbing heat and avoiding thermal stress affecting the weld flatness. Through a linked-drive gas cooling mechanism, the bottom side of the base plate 5 can be cooled as a whole, improving the cooling effect. Furthermore, during the cooling process, cooling gas can be released individually at different locations along with the weld joint, avoiding interference with subsequent welding work on other parts. This solves the problem of heat generated during welding being difficult to eliminate, affecting the overall welding stability. Specifically, a threaded rod 29 is rotatably connected to the inner surface of the support frame 4, and a heat-absorbing frame 30 is threadedly connected to the outer surface of the threaded rod 29. The heat-absorbing frame 30 is limited and slidably mounted on the inner surface of the support frame 4. A threaded rod is rotatably connected to the inner surface of the heat-absorbing frame 30. The threaded rod 31 has a threaded connection on its outer surface to a heat absorber 32, which is then slidably positioned on the inner surface of the heat absorber frame 30. The support frame 4 forms a transverse sliding structure with the heat absorber frame 30 via a threaded rod 29, and the heat absorber frame 30 forms a longitudinal sliding structure with the heat absorber 32 via the threaded rod 31. A moving block 33 is slidably connected to the inner surface of the heat absorber 32, and a heat absorber assembly 34 is mounted on the outer surface of the moving block 33. A return spring 35 is elastically connected between the moving block 33 and the heat absorber 32. A circulation component 36 is nested within the inner surface of the heat absorber assembly 34, and circulating liquid-passing baffles 37 are evenly arranged on the inner surface of the circulation component 36. A circulation pipe 38 is mounted on the outer surface of the circulation component 36, and a cooling component 39 is mounted on one side of the circulation pipe 38. Figure 8 and Figure 9 As shown, the heat-absorbing component 32 forms an elastic lifting structure with the heat-absorbing assembly 34 via the return spring 35 and the moving block 33. The upper cross-section of the outer surface of the heat-absorbing assembly 34 is an isosceles trapezoid. The heat-absorbing assembly 34 and the circulation component 36 form a nested structure, while the circulation component 36 and the partition plate 37 form an integrated structure. The circulation component 36 forms a circulation structure with the cooling assembly 39 via the circulation pipe 38. The heat-absorbing assembly 34 is made of a fast-absorbing heat material. Figure 10 and Figure 11 As shown, the linkage ventilation mechanism also includes a fixed frame 40 mounted on the outer surface of the clamping mechanism 1. The clamping mechanism 1 is connected to a driver 41 via an assembled circulation pipe 38. A turbine 42 is rotatably connected to the inner surface of the driver 41. A circulation threaded rod 43 is mounted on the outer surface of the turbine 42. A cooling air chamber 44 is rotatably connected to the outer surface of the circulation threaded rod 43. This is used to control the gas in the cooling air chamber 44 to be discharged in linkage with the liquid return in the circulation pipe 38. A compression plate 45 is connected to the inner surface of the cooling air chamber 44 via the circulation threaded rod 43. An alternating air inlet pipe 46 and an alternating air outlet pipe 47 are mounted on the outer surface of the cooling air chamber 44. This allows the two sets of cooling air chambers 44, arranged vertically, to alternately supply and exhaust air, preventing the cooling air from stopping. Figure 10 and Figure 11 As shown, an output air pipe 48 is installed on the outer surface of the alternating air outlet pipe 47, and a toothed gear 49 is installed at the rear end of the outer surface of the circulating threaded rod 43. A spur gear 50 is meshed with the outer surface of the toothed gear 49. A rotating shaft 51 is installed on the outer surface of the spur gear 50, and the rotating shaft 51 is positioned and rotated on the fixed frame 40. An elastic damper 52 is connected between the rear side of the outer surface of the rotating shaft 51 and the fixed frame 40 to prevent the rotating shaft 51 from rotating in the opposite direction. A cam 53 is installed on the outer surface of the rotating shaft 51. A gas distribution pipe 56 is installed on the outer surface of the output gas pipe 48. A controller 54 is installed on the outer surface of the gas distribution pipe 56. A release block 55 is elastically connected to the inner surface of the controller 54. A cam 53 is connected to the outer end of the release block 55. The cam 53 controls the release of gas by the release block 55 and is used for gas diversion. A cooling head 57 is installed on the outer surface of the gas distribution pipe 56. The gas distribution pipe 56 and the cooling head 57 are nested on the upper side of the inner surface of the support frame 4 for cooling the bottom side of the base plate 5.

[0039] After the positioning components 21 and 27 assembled on the clamping mechanism 1 are clamped and positioned, the welding robot 3 will be activated to weld the base plate 5, side rod 24, side rod 25, and auxiliary rod 26. Based on the weld point position, the motor assembled on the support frame 4 will be activated, controlling the output shaft to drive the threaded rod 29 to rotate. This will cause the heat-absorbing frame 30 to slide within the inner surface of the support frame 4, controlling the position of the heat-absorbing frame 30. In conjunction with the small motor built into the heat-absorbing frame 30, the output shaft will adjust the threaded rod 31 to move the heat-absorbing component 32, thus controlling the heat-absorbing component 32 to absorb heat from the base plate 5 on the support frame 4. To avoid collision with the support surface of the support frame 4 when the heat-absorbing component 32 moves, the upper inclined surface of its assembled heat-absorbing assembly 34... The moving block 33 of the heat absorption component 34, which is installed on the support frame 4, compresses the reset spring 35 on the inner surface of the heat absorption component 32, thereby avoiding contact between the heat absorption component 34 and the support frame 4 or the base plate 5 to absorb heat, thus improving the heat absorption effect. It also works in conjunction with the built-in circulation component 36 of the heat absorption component 34, and the cooperation between the partition 37 installed inside the circulation component 36 and the externally installed circulation pipe 38 for circulating cooling. The liquid is returned to the cooling component 39 through the circulation pipe 38, controlling the turbine 42 connected to the actuator 41 to rotate, which synchronously starts the gas cooling mechanism. Furthermore, the liquid is returned to the cooling component 39 through the pipe assembled below the actuator 41 for liquid circulation contact cooling. When the driver 41 controls the turbine 42 to rotate, it synchronously drives the circulating threaded rod 43 installed on the turbine 42 to rotate on the inner surface of the cooling air chamber 44. The circulating threaded rod 43 controls the sliding contact plate 45 within the cooling air chamber 44 to slide, thereby controlling the discharge of gas from the cooling air chamber 44. When the cooling air chamber 44 delivers gas, it draws gas from the upper side of the refrigeration assembly 39 through the alternating intake pipe 46 assembled on the outside of the cooling air chamber 44. The gas entering the refrigeration assembly 39 is then supplied through the intake pipe, without affecting the circulation of the cooling liquid. The gas drawn into the cooling air chamber 44 is then transported to the output pipe 48 through its alternating outlet pipe 47 for later branching and distribution. When the circulating threaded rod 43 rotates, it drives the toothed gear 49 mounted at the rear end of the circulating threaded rod 43 to rotate on the fixed frame 40, and meshes with the spur gear 50 assembled with the toothed gear 43 to rotate synchronously. It also drives the rotating shaft 51 mounted on the spur gear 50 to cooperate with the elastic damper 52 connected to it to perform anti-reverse operation on the fixed frame 40. This controls the cam 53 mounted on the rotating shaft 51 to slide the release block 55 elastically slidably connected on the controller 54, thereby controlling the gas distribution pipe 56 assembled with the output gas pipe 48 to be opened through the connected controller 54 for separate gas supply. The gas is then delivered to the cooling head 57 mounted on the gas distribution pipe 56 nested in the support frame 4, thereby cooling the bottom side of the base plate 5 supported by the support frame 4.Furthermore, during cooling, it can be synchronously activated along with the weld area to avoid affecting the temperature of unwelded areas, thus improving welding results. Also, when the equidistantly assembled cams 53 rotate alternately to the next group of gas pipes 56 for cooling, there can be overlapping ventilation with the previous group of gas pipes 56, preventing continuous gas output from damaging the various pipelines.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding clamping mechanism for metal parts of an elevator car, comprising a clamping mechanism one (1) and a clamping mechanism two (2) assembled on the outer surface side of the clamping mechanism one (1), and a welding robot (3) is provided on the rear side of the outer surface of the clamping mechanism one (1). characterized in that include: The support frame (4) is installed at the middle of the upper surface of the clamping mechanism (1), and the upper surface of the support frame (4) is connected to the bottom plate (5). The clamping mechanism (1) limits the bottom plate (5) through the central clamping mechanism. At the same time, the inner surface of the clamping mechanism (1) is slidably connected to the moving frame (11), and the moving frame (11) is positioned by the telescopic extrusion mechanism with the side rod (24). The moving frame (11) is quickly disassembled and installed with the positioning part (27). At the same time, the inner surface of the support frame (4) is slidably connected to the heat absorption frame (30), and the inner surface of the heat absorption frame (30) is slidably connected to the heat absorption part (32), which is used to absorb heat along the welding point to avoid high temperature stress deformation. At the same time, the clamping mechanism (1) is used for staged cooling work through the linkage ventilation mechanism. A movable block (33) is slidably connected to the inner surface of the heat absorber (32), and a heat absorber assembly (34) is installed on the outer surface of the movable block (33). A return spring (35) is elastically connected between the movable block (33) and the heat absorber (32). Meanwhile, a circulation component (36) is nested on the inner surface of the heat absorber assembly (34), and a circulating liquid baffle (37) is evenly arranged on the inner surface of the circulation component (36). A circulation pipe (38) is installed on the outer surface of the circulation component (36), and a refrigeration unit is installed on one side of the circulation pipe (38). Component (39); The heat-absorbing component (32) forms an elastic lifting structure with the heat-absorbing assembly (34) through the reset spring (35) and the moving block (33), and the upper cross section of the outer surface of the heat-absorbing assembly (34) is an isosceles trapezoidal structure. The heat-absorbing assembly (34) and the circulation component (36) form a nested structure. At the same time, the circulation component (36) and the partition (37) form an integrated structure. The circulation component (36) forms a circulation structure with the cooling assembly (39) through the circulation pipe (38). Meanwhile, the heat-absorbing assembly (34) is made of a fast heat-absorbing material.

2. An elevator car metal piece welding clamping mechanism according to claim 1, characterized in that: The centering clamping mechanism also includes a turntable (6) rotatably connected to the inner surface of the clamping mechanism (1), and a telescopic connecting rod (7) is rotatably connected to the outer surface of the turntable (6) via an off-axis. A moving rod (8) is rotatably connected to the other end of the outer surface of the telescopic connecting rod (7), and the moving rod (8) is limited to slide on the inner surface of the clamping mechanism (1). At the same time, a side clamp (9) is quickly installed and removed from the upper surface of the moving rod (8), and a protective sleeve (10) is nested on the outer surface of the side clamp (9).

3. An elevator car metal piece welding clamping mechanism according to claim 2, characterized in that: The clamping mechanism (1) forms a circumferential linear movement structure with the turntable (6) and the telescopic link (7) and the moving rod (8), and the telescopic link (7) and the moving rod (8) form an elastic pulling structure, and the moving rod (8) and the side clamp (9) form a quick-release locking structure. At the same time, the side clamp (9) forms a compression limiting structure with the base plate (5) through the protective sleeve (10).

4. The elevator car metal piece welding clamping mechanism according to claim 1, characterized in that: The telescopic compression mechanism also includes a telescopic component (12) assembled on the upper surface of the movable frame (11), and a limit plate (13) is assembled on the lower surface of the telescopic component (12), and a quick-release piece (14) is engaged with the inner surface of the limit plate (13), while an unlocking piece (15) is slidably connected to the inner surface of the quick-release piece (14); the movable frame (11) forms a telescopic structure through the telescopic component (12) and the limit plate (13), and the limit plate (13) and the quick-release piece (14) form a limit engagement structure, and the quick-release piece (14) and the unlocking piece (15) form a limit sliding structure.

5. An elevator car metal piece welding clamping mechanism according to claim 4, characterized in that: The inner surface of the unlocking component (15) is obliquely slidably connected to the squeezing rod (16), and the other end of the outer surface of the squeezing rod (16) is equipped with a squeezing component (17), which limits the squeezing component (17) to rise and fall on the inner surface of the quick-release component (14). The oblique surface of the squeezing component (17) is nested and slidably connected to the locking component (18), which limits the locking component (18) to engage with the inner surface of the limiting plate (13). At the same time, a return spring (19) is elastically connected between the squeezing component (17) and the quick-release component (14). The quick-release component (14) forms an oblique squeezing structure with the squeezing component (17) through the unlocking component (15) and the squeezing rod (16), and the squeezing component (17) forms an oblique squeezing engagement structure with the limiting plate (13) through the locking component (18). The squeezing component (17) forms an elastic lifting structure with the quick-release component (14) through the return spring (19).

6. An elevator car metal piece welding clamping mechanism according to claim 4, characterized in that: The inner surface of the quick-release component (14) is connected to a nested component (20), and the lower side of the outer surface of the nested component (20) is connected to a positioning component (21). A compression spring (22) is connected between the positioning component (21) and the quick-release component (14), and the compression spring (22) passes through the outer surface of the nested component (20). At the same time, an elastic component (23) is elastically engaged with the outer surface of the nested component (20), and the lower surface of the positioning component (21) is positioned and compressed with a side rod (24) and a side rod (25). The quick-release component (14) and the nested component (20) form a nested sliding structure, and the nested component (20) forms a rotating lock with the positioning component (21) through the elastic component (23). The structure is combined, and the quick-release part (14) forms an elastic sliding structure with the positioning part one (21) through the compression spring (22), while the positioning part one (21) forms a compression structure with the side rod one (24) and the side rod two (25); the inner surface of the limiting plate (13) is nested with the positioning part two (27), and the upper surface of the limiting plate (13) is equipped with an electromagnetic suction part (28), and the lower surface of the positioning part two (27) is extruded with an auxiliary rod (26), and the auxiliary rod (26) is assembled on the upper side of the base plate (5); the limiting plate (13) forms a magnetic suction nesting structure with the positioning part two (27) through the electromagnetic suction part (28), and the positioning part two (27) forms a compression structure with the auxiliary rod (26).

7. An elevator car metal piece welding clamping mechanism according to claim 1, characterized in that: The inner surface of the support frame (4) is rotatably connected to a threaded rod (29), and the outer surface of the threaded rod (29) is threadedly connected to a heat-absorbing frame (30), which limits the heat-absorbing frame (30) to slide on the inner surface of the support frame (4). The inner surface of the heat-absorbing frame (30) is rotatably connected to a threaded rod (31), and the outer surface of the threaded rod (31) is threadedly connected to a heat-absorbing element (32), which limits the heat-absorbing element (32) to slide on the inner surface of the heat-absorbing frame (30). The support frame (4) and the heat-absorbing frame (30) form a transverse sliding structure through the threaded rod (29), and the heat-absorbing frame (30) and the heat-absorbing element (32) form a longitudinal sliding structure through the threaded rod (31).

8. The elevator car metal piece welding clamping mechanism of claim 1, wherein: The linkage ventilation mechanism also includes a fixed frame (40) mounted on the outer surface of the clamping mechanism (1), and the clamping mechanism (1) is connected to a driver (41) through an assembled circulation pipe (38), and a turbine (42) is rotatably connected to the inner surface of the driver (41). Meanwhile, a circulation threaded rod (43) is mounted on the outer surface of the turbine (42), and a cooling air chamber (44) is rotatably connected to the outer surface of the circulation threaded rod (43). This is used to control the gas in the cooling air chamber (44) to be driven to be discharged along with the liquid in the circulation pipe (38). The inner surface of the cooling air chamber (44) is connected to a squeezing plate (45) through the circulation threaded rod (43), and an alternating air inlet pipe (46) and an alternating air outlet pipe (47) are mounted on the outer surface of the cooling air chamber (44). This is used for the two sets of cooling air chambers (44) set up above and below to alternately exhaust and inlet air, so as to prevent the cooling air from stopping.

9. An elevator car metal piece welding clamping mechanism according to claim 8, characterized in that: An output air pipe (48) is installed on the outer surface of the alternating air outlet pipe (47), and a toothed gear (49) is installed at the rear end of the outer surface of the circulating threaded rod (43). A spur gear (50) is meshed on the outer surface of the toothed gear (49). A rotating shaft (51) is installed on the outer surface of the spur gear (50), and the rotating shaft (51) is positioned and rotated on the fixed frame (40). An elastic damper (52) is connected between the rear side of the outer surface of the rotating shaft (51) and the fixed frame (40) to prevent the rotating shaft (51) from rotating in the opposite direction. A cam (53) is installed on the outer surface of the rotating shaft (51), and the output air pipe (48) is installed on the outer surface of the rotating shaft (51). A gas distribution pipe (56) is installed on the outer surface of the gas outlet pipe (48), and a controller (54) is installed on the outer surface of the gas distribution pipe (56). A release block (55) is elastically connected to the inner surface of the controller (54), and a cam (53) is connected to the end of the outer surface of the release block (55). The cam (53) controls the release of gas by the release block (55) and is used for gas diversion. A cooling head (57) is installed on the outer surface of the gas distribution pipe (56), and the gas distribution pipe (56) and the cooling head (57) are nested on the upper side of the inner surface of the support frame (4) for cooling the bottom side of the base plate (5).

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