A device for correcting the welding of an elevator upright lug

Abstract

The application belongs to the field of elevator assembly and provides an elevator stand column pull ear welding correction device, which comprises a mounting plate, a handle fixedly installed on the mounting plate, a square groove formed in the side surface of the mounting plate, a embracing mechanism installed in the square groove and used for fixing the mounting plate on the stand column, a correction mechanism installed on the mounting plate, a clamping mechanism installed at the output end of the correction mechanism and used for clamping the pull ear. The application realizes accurate adjustment of the pull ear in the horizontal and vertical directions through the driving of the double servo motors of the correction mechanism, cooperates with the limiting insertion column and the stretching spring of the clamping mechanism, ensures that the pull ear is stably attached to the stand column and does not slide, and the correction accuracy can reach the millimeter level. The application effectively solves the problem of large positioning deviation of the existing device, and the whole operation can be completed by a single person. The handle integrates the control button, the actions of each mechanism can be conveniently controlled through the button, and the device fixing and dismounting do not require multiple people to cooperate.

Description

Technical Field

[0001] This invention belongs to the field of elevator assembly, and particularly relates to a welding and correction device for elevator column lugs. Background Technology

[0002] The elevator column is part of the elevator car frame and is generally assembled on-site. The car frame typically consists of an upper beam, columns, a bottom beam, and cables. The columns connect the upper and bottom beams, while the cables connect the columns and the car chassis. The cables are used to adjust the car chassis level and prevent tilting. Lugs are provided at the connection points between the cables and the elevator columns, and these lugs connect the cables to the columns. Bolt holes are provided on the lugs for connecting the lugs and cables with bolts. The elevator column is shaped like a channel steel frame and includes a central panel and vertical plates connected to both sides of the central panel. The lugs are welded to the vertical plates on both sides.

[0003] The elevator column is a crucial supporting component for the elevator car, and the welding lugs, as key connecting parts on the elevator column, directly affect the installation quality and operational safety of the elevator. Currently, the welding of elevator column lugs typically involves manual positioning, which has the following technical drawbacks:

[0004] Manual positioning is susceptible to the influence of operator experience, and because the pull lugs are small and inconvenient to hold, workers often use only their fingers to hold the pull lugs while welding, which can easily cause the pull lugs to shift position. Furthermore, the pull lugs are connected to the vertical plates on both sides of the elevator column near the center plate of the elevator column through the edge, making it difficult to determine the welding position. This can easily lead to deviations in the horizontal, vertical, and axial positions of the pull lugs, resulting in inaccurate welding, low welding quality and efficiency, making subsequent cable connection difficult, and even affecting the stability of elevator operation. Summary of the Invention

[0005] The purpose of this invention is to provide an elevator column lug welding correction device, which aims to solve the technical problems of low welding quality and welding efficiency caused by manual positioning in the prior art.

[0006] This invention is implemented as follows: an elevator column pull lug welding correction device includes a mounting plate, on which a handle is fixedly mounted. A square groove is formed on the side of the mounting plate, and a circumferential mechanism is installed in the square groove to fix the mounting plate to the column. A correction mechanism is also installed on the mounting plate, and a clamping mechanism is installed at the output end of the correction mechanism to clamp the pull lug. The correction mechanism drives the clamping mechanism to move horizontally and vertically to accurately correct the position of the pull lug and ensure that the pull lug is aligned with a preset mark.

[0007] Further technical solution: The circumferential mechanism includes a slide, which is slidably installed in a square groove. Inner slide frames are installed on both sides of the slide, and circumferential plates are rotatably installed on both inner slide frames. The circumferential plates are L-shaped, and a torsion spring is connected between the circumferential plates and the inner slide frames. Initially, the torsion spring causes the circumferential plates to rotate outward.

[0008] The encircling mechanism also includes a power mechanism, which is mounted on the mounting plate. The output end of the power mechanism is connected to the slide. The power mechanism is used to drive the slide to move in the square groove, thereby driving the encircling plate to achieve the opening or clamping action.

[0009] To enable the circumferential plate to be clamped onto the column, a guide post is fixedly connected to one end of the circumferential plate inside the square groove. The bottom of the square groove has a guide slot adapted to the guide post. The guide post is slidably installed in the guide slot. When the power mechanism drives the slide to move, the guide post slides in the guide slot, thereby causing the guide post to drive the circumferential plate to rotate, so that the circumferential plate can open outward to allow the end of the circumferential plate to cross over the column, or the circumferential plate can rotate inward to facilitate clamping the circumferential plate onto the column.

[0010] A further technical solution: The guide groove includes a vertical section and a movable section, the vertical section and the movable section are connected, the width of the vertical section is equal to the diameter of the guide post, and the cross-section of the movable section is a right trapezoid to allow the guide post to move within the movable section.

[0011] Further technical solution: Both inner sliding frames are slidably mounted on the slide frame, and the slide frame is also equipped with an adjustment mechanism. The two output ends of the adjustment mechanism are respectively connected to the two inner sliding frames. The adjustment mechanism is used to drive the two inner sliding frames to move towards or away from each other to adjust the distance between the two inner sliding frames, so that the circumferential plate can clamp the column in the middle, avoid the mounting plate from sliding relative to the column, and ensure positioning accuracy.

[0012] The guide groove also includes an adjustment section, which is located at the end of the vertical section and is connected to the vertical section. The cross-section of the adjustment section is rectangular, and the side of the adjustment section coincides with the side of the vertical section. After the power mechanism tightens the ring plate, the guide column will move into the adjustment section. At this time, the width between the two ring plates can be adjusted.

[0013] The encircling mechanism also includes a limiting mechanism, which is connected between the inner sliding frame and the encircling plate to fix the encircling plate and the inner sliding frame relatively. There are at least two sets of the limiting mechanism, which are respectively installed on the two inner sliding frames.

[0014] Further technical solution: The limiting mechanism includes a first mounting groove formed on the inner sliding frame, a limiting post is slidably mounted inside the first mounting groove, a first compression spring is connected between the limiting post and the first mounting groove, the end of the limiting post extending out of the first mounting groove is hemispherical, and a limiting groove adapted to the limiting post is formed on the circumferential plate, the depth of the limiting groove is less than the radius of the limiting post, so that the spherical head of the limiting post can be moved out of the limiting groove.

[0015] A further technical solution: The guide groove also includes a protrusion, which is located on the right-angled side of the movable section near the vertical section. When the guide post moves from the vertical section to the movable section, the guide post will contact the protrusion and be pushed to the side of the vertical section by the protrusion, so that the limiting post moves out of the limiting groove, thereby releasing the limitation mechanism from the ring plate, avoiding the need for workers to manually pry the ring plate, and making the operation of the device more convenient.

[0016] A further technical solution: The correction mechanism includes a slider, which is slidably mounted on a mounting plate. A sliding plate is slidably mounted on the slider, and the sliding direction of the sliding plate and the slider is opposite. A third servo motor is also fixedly mounted on the mounting plate. A fourth lead screw is fixedly connected to the output shaft of the third servo motor. The fourth lead screw is threadedly connected to the slider. A second servo motor is fixedly mounted on the slider. The third lead screw is fixedly connected to the output shaft of the second servo motor. The third lead screw is threadedly connected to the sliding plate.

[0017] Further technical solution: The clamping mechanism includes a movable column, which is slidably mounted on a sliding plate. A pull tab is fixedly connected to one end of the movable column away from the mounting plate. A tension spring connects the pull tab to the sliding plate. A clamping plate is fixedly connected to the other end of the movable column. An installation slot is provided on the clamping plate, which divides the clamping plate into left and right side plates. A second installation groove is provided on one side of the installation slot. A clamping rod is slidably mounted in the second installation groove. A second compression spring connects the clamping rod to the second installation groove. A pull rod is fixedly connected to the end of the clamping rod. One end of the pull rod extends out of the clamping plate. A clamping plate is fixedly connected to the end of the clamping rod located in the installation slot. A limiting pin is fixedly connected to the side of the clamping plate. The diameter of the limiting pin is equal to (or slightly smaller than) the diameter of the bolt hole on the pull lug. A slot adapted to the limiting pin is provided on the other side of the installation slot for the insertion of the limiting pin, further improving the clamping stability of the pull lug.

[0018] Further technical solution: The mounting plate is also provided with a control compartment, which contains a controller and a lithium battery. The controller is used to control the power system of the device to realize the coordinated work of various mechanisms. The handle is integrated with control buttons, which allow the operator to operate the device conveniently without the need for an additional control panel, thus improving the ease of operation.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. High positioning accuracy: Driven by dual servo motors of the calibration mechanism, the horizontal and vertical directions of the pull lugs can be precisely adjusted. Combined with the limit pins and tension springs of the clamping mechanism, the pull lugs are stably attached to the column and do not slip. The calibration accuracy can reach the millimeter level, effectively solving the problem of large positioning deviation in existing devices.

[0021] 2. Easy to operate: The entire operation can be completed by a single person. The handle integrates control buttons, and the actions of each mechanism can be easily controlled through the buttons. The device can be fixed and disassembled without the need for multiple people to work together. When disassembling, the ring plate opens automatically without the need for manual prying, which greatly improves the efficiency of operation and reduces labor costs.

[0022] 3. High adaptability: The distance between the two ring plates can be adjusted by the adjustment mechanism to adapt to elevator columns of different widths. There is no need to replace the entire set of equipment, which reduces equipment investment costs and meets the needs of mass production of multiple specifications.

[0023] 4. Stable and reliable structure: The limiting mechanism of the ring-shaped mechanism can effectively fix the ring plate and prevent it from rotating at will; the clamping mechanism uses the limiting pin and clamping plate to fix the pull lugs, ensuring that the pull lugs do not slip during the correction and welding process; each motion mechanism is driven by a lead screw, which makes the movement smooth, has high precision, and has a long service life.

[0024] 5. High practicality: The overall structure is compact and the weight is moderate, making it easy for staff to carry and operate; the lithium battery in the control cabin can provide continuous power supply without the need for an external power source, making it suitable for different operating scenarios and of great promotional value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall front view of the present invention.

[0026] Figure 2 This is a schematic diagram of the overall rear view structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the encircling mechanism in this invention.

[0028] Figure 4 In this invention Figure 3 Enlarged diagram of point C in the middle.

[0029] Figure 5 This is a schematic diagram of the clamping mechanism for installing the pull lug in this invention.

[0030] Figure 6 This is a schematic diagram of the overall side structure of the present invention.

[0031] Figure 7 This is a rear view schematic diagram of the mounting plate in this invention.

[0032] Figure 8 In this invention Figure 6 Enlarged diagram of point A in the middle.

[0033] Figure 9 In this invention Figure 7 Enlarged diagram of point B in the middle.

[0034] In the attached diagram: 1. Handle; 2. Mounting plate; 3. Encircling mechanism; 31. First servo motor; 32. Inner slide frame; 33. Encircling plate; 34. First lead screw; 35. Second lead screw; 36. Carriage; 37. Guide groove; 371. Protruding contact; 372. Moving section; 373. Vertical section; 374. Adjusting section; 38. Dual-head motor; 39. Limiting mechanism; 391. First compression spring; 392. Limiting post; 393. Limiting groove; 310. Guide post; 4 41. Correction mechanism; 42. Sliding plate; 43. Third lead screw; 44. Slider; 45. Second servo motor; 46. Fourth lead screw; 57. Third servo motor; 58. Clamping mechanism; 59. Pull plate; 50. Tension spring; 51. Movable column; 52. Card plate; 53. Mounting seam; 54. Slot; 55. Limiting insert; 56. Clamping rod; 57. Pull rod; 58. Second compression spring; 59. Clamping plate; 50. Square groove; 61. Control compartment; 72. Pull lug. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0037] like Figures 1-9 As shown, this invention provides an elevator column pull lug welding correction device, including a mounting plate 2. A square groove 6 is provided on the side of the mounting plate 2, and a circumferential mechanism 3 is installed in the square groove 6. The circumferential mechanism 3 is used to fix the mounting plate 2 to the column. A correction mechanism 4 is also installed on the mounting plate 2. A clamping mechanism 5 is installed at the output end of the correction mechanism 4. The clamping mechanism 5 is used to clamp the pull lug 8. The correction mechanism 4 is used to drive the clamping mechanism 5 to move in the horizontal and vertical directions to accurately correct the position of the pull lug 8 and ensure that the pull lug is aligned with the preset mark.

[0038] Specifically, a handle 1 is also fixedly installed on the mounting plate 2. The handle 1 is ergonomically designed to make it easy for staff to pick up and move the mounting plate 2.

[0039] Before use, install the pull lug 8 at the output end of the clamping mechanism 5, and mark the position of the pull lug 8 on the column according to the position of the bottom beam and the cable.

[0040] When using, hold the handle 1 and bring the mounting plate 2 close to the column. Then, operate the clamping mechanism 3 to hold the column and fix the mounting plate 2 on the column. This step does not require accurate installation of the mounting plate 2. Just fix the mounting plate 2 near the mark. Then, adjust the position of the clamping mechanism 5 and the pull lug 8 through the correction mechanism 4 so that the pull lug 8 is aligned with the mark. Release the mounting plate 2, and the pull lug 8 will be automatically fixed on the column and fixed in the correct position. Finally, the worker can start welding the pull lug 8.

[0041] During welding, first weld one side of the lug 8 with a welding torch, then operate the clamping mechanism 5 to release the lug 8, and operate the correction mechanism 4 to move the clamping mechanism 5 away from the lug 8. Then the mounting plate 2 can be removed from the column. Finally, weld the other sides of the lug 8 to accurately weld the lug 8 onto the column. This process only requires one person to operate and can be accurately positioned, making it more convenient to use.

[0042] The present invention provides an elevator column pull lug welding correction device. In this embodiment, the circumferential mechanism 3 includes a slide 36, which is slidably installed in a square groove 6. Inner slide frames 32 are installed on both sides of the slide 36. A circumferential plate 33 is rotatably installed on each of the two inner slide frames 32. The circumferential plate 33 is L-shaped. A torsion spring is connected between the circumferential plate 33 and the inner slide frame 32. Initially, the torsion spring causes the circumferential plate 33 to rotate outward.

[0043] The encircling mechanism 3 also includes a power mechanism, which is mounted on the mounting plate 2. The output end of the power mechanism is connected to the slide 36. The power mechanism is used to drive the slide 36 to move in the square groove 6, thereby driving the encircling plate 33 to achieve opening or clamping action.

[0044] To enable the circumferential plate 33 to be clamped onto the column, a guide post 310 is fixedly connected to one end of the circumferential plate 33 located inside the square groove 6. A guide groove 37 adapted to the guide post 310 is provided at the bottom of the square groove 6. The guide post 310 is slidably installed in the guide groove 37. When the power mechanism drives the slide 36 to move, the guide post 310 slides in the guide groove 37, thereby causing the guide post 310 to drive the circumferential plate 33 to rotate, so that the circumferential plate 33 can open outward, making it easier for the end of the circumferential plate 33 to cross the column, or to rotate the circumferential plate 33 inward, making it easier for the circumferential plate 33 to be clamped onto the column.

[0045] Specifically, the power mechanism includes a first servo motor 31, which is fixedly mounted on the mounting plate 2. The output shaft of the first servo motor 31 is fixedly connected to a second lead screw 35, and one end of the second lead screw 35 is threadedly connected to the slide 36.

[0046] In use, first move the slide 36 to the end position of the square groove 6, then the two annular plates 33 are in the open state, so that the mounting plate 2 is close to the column and the side of the mounting plate 2 is in close contact with the surface of the column. Then the two annular plates 33 pass through the two sides of the column. Start the first servo motor 31, the first servo motor 31 drives the second lead screw 35 to rotate, the second lead screw 35 drives the slide 36 to move into the square groove 6. Under the action of the guide groove 37, the two annular plates 33 rotate towards the middle of the mounting plate 2, thereby clamping them on both sides of the column. Continue to move the slide 36, then the ends of the annular plates 33 will contact the side of the column, thereby clamping the mounting plate 2 on the column. Then the position correction and welding of the pull lug 8 can begin.

[0047] The present invention provides an elevator column pull lug welding correction device. In this embodiment, the guide groove 37 includes a vertical section 373 and a movable section 372. The vertical section 373 and the movable section 372 are connected. The width of the vertical section 373 is equal to the diameter of the guide column 310. The cross section of the movable section 372 is a right trapezoid to allow the guide column 310 to move within the movable section 372.

[0048] Initially, the guide post 310 is located within the movable section 372. Under the action of the torsion spring, the circumferential plate 33 rotates outward. When the power mechanism drives the slide 36 to move into the square groove 6, the guide post 310 moves from the movable section 372 into the vertical section 373. The guide post 310 then moves along the edge of the movable section 372 into the vertical section 373, causing the guide post 310 to gradually drive the circumferential plate 33 to rotate inward. When the guide post 310 has completely moved into the vertical section 373, it is blocked by both sides of the vertical section 373, preventing the circumferential plate 33 from rotating. At this time, the two circumferential plates 33 are parallel to the sides of the column and are initially clamped on both sides of the column. Continuing to drive the slide 36 into the square groove 6 through the power mechanism, the circumferential plates 33 can be tightened, so that the column is clamped between the mounting plate 2 and the ends of the circumferential plates 33, thus fixing the mounting plate 2 on the column.

[0049] When using this device on columns of different widths, the two circumferential plates 33 may not be able to contact the side surfaces of the column, resulting in a gap between the circumferential plates 33 and the column. When correcting the position of the lugs 8 and welding the lugs 8, relative sliding may occur between the mounting plate 2 and the column, causing a deviation in the position of the lugs 8. Therefore, both inner sliding frames 32 are slidably mounted on the slide 36. The slide 36 is also equipped with an adjustment mechanism. The two output ends of the adjustment mechanism are respectively connected to the two inner sliding frames 32. The adjustment mechanism is used to drive the two inner sliding frames 32 to move towards or away from each other to adjust the distance between the two inner sliding frames 32, so that the circumferential plates 33 can clamp the column in the middle, prevent the mounting plate 2 from sliding relative to the column, and ensure positioning accuracy.

[0050] When adjusting the position of the inner sliding frame 32, the inner sliding frame 32 will drive the circumferential plate 33 and the guide post 310 to move. In order to avoid motion interference, the guide groove 37 also includes an adjustment section 374. The adjustment section 374 is located at the end of the vertical section 373 and is connected to the vertical section 373. The cross-section of the adjustment section 374 is rectangular, and the side of the adjustment section 374 coincides with the side of the vertical section 373. After the power mechanism tightens the circumferential plate 33, the guide post 310 will move into the adjustment section 374. At this time, the width between the two circumferential plates 33 can be adjusted.

[0051] However, since there is no obstruction from the side wall of the vertical section 373, the guide column 310 is in a movable state. At this time, the circumferential plate 33 will rotate inward or outward, and the two circumferential plates 33 can no longer tightly clamp the two sides of the column. Therefore, the circumferential mechanism 3 also includes a limiting mechanism 39. The limiting mechanism 39 is connected between the inner sliding frame 32 and the circumferential plate 33 and is used to fix the circumferential plate 33 and the inner sliding frame 32 relative to each other. There are at least two sets of the limiting mechanism 39, which are respectively installed on the two inner sliding frames 32.

[0052] When tightening the circumferential plate 33, the guide column 310 moves from the movable section 372 to the vertical section 373. At this time, the circumferential plate 33 is parallel to the side wall of the column, and the limiting mechanism 39 fixes the circumferential plate 33. When the guide column 310 moves into the adjusting section 374 and adjusts the inner sliding frame 32, the limiting mechanism 39 will still fix the circumferential plate 33, thus preventing the circumferential plate 33 from rotating arbitrarily and causing the two circumferential plates 33 to be unable to be clamped on the column.

[0053] Specifically, the adjustment mechanism includes a dual-head motor 38 and two first lead screws 34. The dual-head motor 38 is mounted on the slide 36, and the two first lead screws 34 are fixedly connected to the two output shafts of the dual-head motor 38. The two first lead screws 34 are respectively threaded to the two inner slide frames 32.

[0054] The present invention provides an elevator column pull lug welding correction device. In this embodiment, the limiting mechanism 39 includes a first mounting groove formed on the inner sliding frame 32. A limiting post 392 is slidably installed inside the first mounting groove. A first compression spring 391 is connected between the limiting post 392 and the first mounting groove. The end of the limiting post 392 extending out of the first mounting groove is hemispherical. A limiting groove 393 adapted to the limiting post 392 is formed on the circumferential plate 33. The depth of the limiting groove 393 is less than the radius of the limiting post 392 so that the spherical head of the limiting post 392 can move out of the limiting groove 393.

[0055] Specifically, when the circumferential plate 33 and the inner sliding frame 32 rotate relative to each other, the edge of the limiting groove 393 presses against the side wall of the spherical head of the limiting post 392, thereby pressing the limiting post 392 into the first mounting groove and releasing the limiting post 392 from limiting the circumferential plate 33.

[0056] The elevator column pull lug welding correction device provided by this invention requires controlling the power mechanism to move the slide 36 to the port of the square groove 6 when removing the mounting plate 2 from the column. This allows the guide column 310 to move into the movable section 372. However, since the limiting mechanism 39 still restricts the movement of the retaining plate 33, the operator needs to manually pry the retaining plate 33 outwards to release the limiting mechanism 39's restriction on the retaining plate 33, allowing both retaining plates 33 to open and smoothly remove the mounting plate 2 from the column. In this embodiment... The guide groove 37 also includes a protrusion 371, which is located on the right-angled side of the movable section 372 near the vertical section 373. When the guide post 310 moves from the vertical section 373 to the movable section 372, the guide post 310 will contact the protrusion 371 and be pushed to the side of the vertical section 373 by the protrusion 371, so that the limiting post 392 moves out of the limiting groove 393, thereby releasing the limitation of the limiting mechanism 39 on the ring plate 33, avoiding the need for the operator to manually pry the ring plate 33, and making the operation of the device more convenient.

[0057] The present invention provides an elevator column lug welding correction device. In this embodiment, the correction mechanism 4 includes a slider 43, which is slidably mounted on a mounting plate 2. A sliding plate 41 is slidably mounted on the slider 43, and the sliding directions of the sliding plate 41 and the slider 43 are opposite. A third servo motor 46 is also fixedly mounted on the mounting plate 2. A fourth lead screw 45 is fixedly connected to the output shaft of the third servo motor 46. The fourth lead screw 45 is threadedly connected to the slider 43. A second servo motor 44 is fixedly mounted on the slider 43. A third lead screw 42 is fixedly connected to the output shaft of the second servo motor 44. The third lead screw 42 is threadedly connected to the sliding plate 41.

[0058] Specifically, the clamping mechanism 5 is mounted on the sliding plate 41.

[0059] The slider 43 is raised and lowered by the third servo motor 46, and the sliding plate 41 is moved left and right by the second servo motor 44, so that the sliding plate 41 can drive the clamping mechanism 5 and the pull lug 8 to move precisely to the preset marked position.

[0060] The present invention provides an elevator column pull lug welding correction device. In this embodiment, the clamping mechanism 5 includes a movable column 53, which is slidably mounted on a sliding plate 41. A pull tab 51 is fixedly connected to one end of the movable column 53 away from the mounting plate 2. A tension spring 52 is connected between the pull tab 51 and the sliding plate 41. A clamping plate 54 is fixedly connected to the other end of the movable column 53. An installation slot 55 is provided on the clamping plate 54, which divides the clamping plate 54 into left and right side plates. A second installation groove is provided on one side of the installation slot 55, and a clamping rod 58 is slidably mounted in the second installation groove. A second compression spring 510 is connected between the second mounting slot and the second mounting groove. A pull rod 59 is fixedly connected to the end of the clamping rod 58. One end of the pull rod 59 extends out of the clamping plate 54. A clamping plate 511 is fixedly connected to the end of the clamping rod 58 located in the mounting seam 55. A limiting post 57 is fixedly connected to the side of the clamping plate 511. The diameter of the limiting post 57 is equal to (or slightly smaller than) the diameter of the bolt hole on the pull lug 8. A slot 56 adapted to the limiting post 57 is opened on the other side of the mounting seam 55 to allow the limiting post 57 to be inserted, further improving the clamping stability of the pull lug 8.

[0061] Specifically, when installing the pull lug 8, the clamping rod 58 is pulled open by the pull rod 59, leaving enough space between the end of the limiting insert 57 and the side of the mounting seam 55 to insert the pull lug 8. Then, the pull lug 8 is inserted between the limiting insert 57 and the side of the mounting seam 55, and the bolt hole of the pull lug 8 is aligned with the axis of the limiting insert 57. The pull rod 59 is released, and under the action of the second compression spring 510, the limiting insert 57 passes through the pull lug 8 and is inserted into the slot 56. The clamping plate 511 presses the pull lug 8 against the side wall of the mounting seam 55, and then fixes the pull lug 8 on the clamping plate 54.

[0062] When the lug 8 is pressed against the surface of the column, the clamping plate 54 presses the lug 8 against the surface of the column under the action of the tension spring 52. When the position of the lug 8 is corrected, the limiting pin 57 limits the lug 8 and pushes the lug 8 to move. This can effectively prevent relative sliding between the clamping plate 54 and the lug 8, making the correction efficiency higher and the position of the lug 8 more accurate.

[0063] The present invention provides an elevator column pull lug welding correction device. In this embodiment, the 2 is further provided with a control compartment 7, which is equipped with a controller and a lithium battery. The controller is used to control the power system of the device to realize the coordinated work of each mechanism. The handle 1 is integrated with control buttons, and the operator can conveniently operate the device through the control buttons without the need for an additional operation panel, thus improving the ease of operation.

[0064] Workflow:

[0065] The working steps of this elevator column lug welding and alignment device are as follows. The entire process can be completed by a single person. The specific steps are as follows:

[0066] Step 1: Preliminary Preparations

[0067] The staff first picks up the device using handle 1 and checks whether each mechanism of the device is working properly, including the rotational flexibility of the circumferential mechanism 3, the movement stability of the correction mechanism 4, and the clamping reliability of the clamping mechanism 5, to ensure that the lithium battery has sufficient power. Then, based on the installation position of the elevator column base beam and the cable, the welding position of the pull lug 8 is marked on the column. The markings must be clear and accurate as a reference for the correction of the pull lug.

[0068] Step 2: Install the pull tabs

[0069] The operator pulls the clamping rod 58 of the clamping mechanism 5 outward using the pull rod 59, leaving sufficient space between the limiting insert 57 and the side of the installation seam 55; inserts the pull lug 8 into the installation seam 55, aligning the bolt hole of the pull lug 8 with the axis of the limiting insert 57; releases the pull rod 59, and under the action of the second compression spring 510, the limiting insert 57 passes through the bolt hole of the pull lug 8 and inserts into the slot 56, and the clamping plate 511 presses and fixes the pull lug 8, completing the installation of the pull lug 8.

[0070] Step 3: Fixing device

[0071] The operator holds handle 1 and brings the device close to the elevator column, so that the side of the mounting plate 2 is in close contact with the column surface. At this time, the two clamping plates 33 of the clamping mechanism 3 are in the initial open state, passing over the column from both sides. The first servo motor 31 is started by the control button on handle 1. The first servo motor 31 drives the second lead screw 35 to rotate, driving the slide 36 to move into the square groove 6. The guide column 310 moves along the movable section 372 of the guide groove 37 to the vertical section 373, driving the clamping plate 33 to rotate inward until the guide column 310 enters the vertical section 373, and the clamping plate 33 is parallel to the sides of the column and initially clamps it. The slide 36 is continued to move to tighten the clamping plate 33, so that the column is clamped between the mounting plate 2 and the clamping plate 33, completing the initial fixation of the device on the column.

[0072] If the width of the column does not match the initial distance between the two circumferential plates 33, the dual-head motor 38 is started. The dual-head motor 38 drives the two first lead screws 34 to rotate, which drives the two inner sliding frames 32 to move towards each other, adjusting the distance between the two circumferential plates 33 so that the circumferential plates 33 fit tightly against the two sides of the column, preventing the device from sliding between the device and the column. During the adjustment process, the limiting mechanism 39 always fixes the circumferential plates 33 to prevent them from rotating arbitrarily.

[0073] Step 4: Adjust the position of the pull tab

[0074] The calibration mechanism 4 is activated by the control button on the handle 1: the third servo motor 46 is activated, which drives the fourth lead screw 45 to rotate, thereby raising and lowering the slider 43, and thus adjusting the vertical position of the clamping mechanism 5 and the pull lug 8; the second servo motor 44 is activated, which drives the third lead screw 42 to rotate, thereby moving the sliding plate 41, and thus adjusting the horizontal position of the clamping mechanism 5 and the pull lug 8; the alignment of the pull lug 8 with the mark on the column is observed throughout the process, and the position of the pull lug 8 is precisely adjusted until the pull lug 8 is completely aligned with the mark, thus completing the calibration of the pull lug position.

[0075] During the calibration process, the tension spring 52 always presses the lug 8 against the surface of the column, and the limiting insert 57 prevents the lug 8 from sliding, thus ensuring calibration accuracy.

[0076] Step 5: First stage of welding the pull lugs

[0077] After the position of the pull lug 8 is corrected, the staff uses a welding torch to weld one side of the pull lug 8 to ensure that the pull lug 8 is initially fixed on the column and to prevent the position of the pull lug from shifting during subsequent operations.

[0078] Step 6: Disassemble the device

[0079] After the first edge of the pull lug 8 is welded, the clamping rod 58 is pulled open by the pull rod 59 to release the clamping mechanism 5 from the pull lug 8; then the second servo motor 44 and the third servo motor 46 are started by the control button, and the correction mechanism 4 is adjusted to move the clamping mechanism 5 away from the pull lug 8 to avoid obstructing the subsequent welding area; then the first servo motor 31 is started to drive the slide 36 to move towards the port of the square slot 6, and the guide column 310 moves from the vertical section 373 to the movable section 372 and contacts the protrusion 371. After being pushed by the protrusion 371, the restriction of the limiting mechanism 39 is released. Under the action of the torsion spring, the circumferential plate 33 automatically rotates outward and disengages from the column; the operator holds the handle 1 and removes the device from the column to complete the disassembly of the device.

[0080] Step 7: Second stage of welding the pull lugs

[0081] After the device was disassembled, the workers welded the remaining edges of the lug 8 to ensure that the lug 8 was firmly welded to the column. During the welding process, they were careful to keep the position of the lug 8 unchanged until all welding work was completed.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A welding and straightening device for elevator column pull lugs, comprising a mounting plate, wherein a handle is fixedly mounted on the mounting plate, characterized in that, The mounting plate has a square groove on its side, and a circumferential mechanism is installed in the square groove. The circumferential mechanism is used to fix the mounting plate to the column. The mounting plate is also equipped with a correction mechanism. The output end of the correction mechanism is equipped with a clamping mechanism. The clamping mechanism is used to clamp the pull lug. The correction mechanism is used to drive the clamping mechanism to move in the horizontal and vertical directions to accurately correct the position of the pull lug. The encircling mechanism includes a slide, which is slidably installed in a square groove. Inner slide frames are installed on both sides of the slide, and an encircling plate is rotatably installed on each of the two inner slide frames. The encircling plate is L-shaped, and a torsion spring is connected between the encircling plate and the inner slide frame. Initially, the torsion spring causes the encircling plate to rotate outward. A guide post is fixedly connected to one end of the circumferential plate inside the square groove. A guide groove adapted to the guide post is opened at the bottom of the square groove, and the guide post is slidably installed in the guide groove. The guide groove includes a vertical section and a movable section, and the vertical section is connected to the movable section; Both inner sliding frames are slidably mounted on the slide frame, and the slide frame is also equipped with an adjustment mechanism. The two output ends of the adjustment mechanism are respectively connected to the two inner sliding frames. The adjustment mechanism is used to drive the two inner sliding frames to move towards or away from each other. The guide groove also includes an adjustment section, which is located at the end of the vertical section and communicates with the vertical section; The encircling mechanism also includes a limiting mechanism, which is connected between the inner sliding frame and the encircling plate to fix the encircling plate and the inner sliding frame relative to each other. There are at least two sets of the limiting mechanism, which are respectively installed on the two inner sliding frames. The limiting mechanism includes a first mounting groove on the inner sliding frame, a limiting post is slidably mounted inside the first mounting groove, a first compression spring is connected between the limiting post and the first mounting groove, the end of the limiting post extending out of the first mounting groove is hemispherical, and a limiting groove adapted to the limiting post is provided on the circumferential plate, the depth of the limiting groove being less than the radius of the limiting post.

2. The elevator column lug welding correction device according to claim 1, characterized in that, The encircling mechanism also includes a power mechanism, which is mounted on the mounting plate. The output end of the power mechanism is connected to the slide. The power mechanism is used to drive the slide to move in the square groove, thereby driving the encircling plate to open or clamp.

3. The elevator column lug welding correction device according to claim 2, characterized in that, The width of the vertical section is equal to the diameter of the guide column, and the cross-section of the movable section is a right trapezoid to allow the guide column to move within the movable section.

4. The elevator column lug welding correction device according to claim 1, characterized in that, The guide groove also includes a protrusion, which is located on the right-angle side of the movable section near the vertical section. When the guide post moves from the vertical section to the movable section, the guide post will contact the protrusion and be pushed to the side of the vertical section by the protrusion, so that the limiting post moves out of the limiting groove, thereby releasing the limitation mechanism from the circumferential plate.

5. The elevator column lug welding correction device according to claim 1, characterized in that, The calibration mechanism includes a slider, which is slidably mounted on a mounting plate. A sliding plate is slidably mounted on the slider, and the sliding direction of the sliding plate and the slider is opposite. A third servo motor is also fixedly mounted on the mounting plate. A fourth lead screw is fixedly connected to the output shaft of the third servo motor. The fourth lead screw is threadedly connected to the slider. A second servo motor is fixedly mounted on the slider. The third lead screw is fixedly connected to the output shaft of the second servo motor. The third lead screw is threadedly connected to the sliding plate.

6. The elevator column lug welding correction device according to claim 5, characterized in that, The clamping mechanism includes a movable column, which is slidably mounted on the output end of the calibration mechanism. A pull tab is fixedly connected to the end of the movable column away from the mounting plate. A tension spring connects the pull tab and the sliding plate. A clamping plate is fixedly connected to the other end of the movable column. An installation slot is provided on the clamping plate. A second installation groove is provided on one side of the installation slot. A clamping rod is slidably mounted in the second installation groove. A second compression spring connects the clamping rod and the second installation groove. A pull rod is fixedly connected to the end of the clamping rod. One end of the pull rod extends out of the clamping plate. A clamping plate is fixedly connected to the end of the clamping rod located in the installation slot. A limiting pin is fixedly connected to the side of the clamping plate. The diameter of the limiting pin is equal to the diameter of the pull lug bolt hole. A slot adapted to the limiting pin is provided on the other side of the installation slot.

7. The elevator column lug welding correction device according to claim 1, characterized in that, The mounting plate also has a control compartment, which houses a controller and a lithium battery. The controller is used to control the power system of the device, and the handle integrates control buttons.

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