Reinforcing steel flash butt welding angle precision calibration fixture

Abstract

This utility model belongs to the field of welding fixture technology, specifically relating to a precision calibration fixture for flash butt welding angle of reinforcing bars. It includes a base, two lower clamping plates, and two upper clamping plates. The bottom center of each of the two lower clamping plates is fixedly connected to the upper ends of two support shafts. This utility model, by connecting the support shafts to the lower clamping plates and by incorporating a worm gear and worm wheel connected to the support shafts, and by installing a laser at the upper end of the stand, allows for efficient flash butt welding of reinforcing bars. When the reinforcing bar bends and is placed horizontally on the support plate and lower clamping plates, the end face of the reinforcing bar may not align with the laser beam. In this case, the user can rotate the worm gear, which in turn drives the support shaft, lower clamping plates, support plate, upper clamping plates, and the reinforcing bar to rotate. During this process, the user can observe the alignment of the laser beam with the end face of the reinforcing bar until the laser beam completely aligns with the end face, thereby adjusting the two ends of the reinforcing bar to a parallel and aligned state, effectively improving the subsequent welding quality.

Description

Technical Field

[0001] This utility model belongs to the field of welding fixture technology, specifically relating to a precision calibration fixture for flash butt welding angle of reinforcing bars. Background Technology

[0002] Flash butt welding is widely used for longitudinal connections of reinforcing bars and welding of prestressed reinforcing bars to screw end rods. The principle of flash butt welding of reinforcing bars is to use a welding machine to bring the two ends of the reinforcing bars into contact, and then apply a high current with a low voltage to heat the reinforcing bars to a certain temperature and soften them. After that, axial pressure is applied to forge the reinforcing bars to form a welded joint. During transportation and storage, the ends of the reinforcing bars are easily bent and deformed. However, in the existing technology, the flash butt welding fixtures for reinforcing bars do not have an angle adjustment function. When flash butt welding is performed, if the two reinforcing bars are placed horizontally and aligned, the end faces of the two reinforcing bars are not parallel. In the subsequent welding process, this will lead to incomplete contact between the welding surfaces of the two reinforcing bars and the occurrence of a cold weld. If the welding surfaces of the two reinforcing bars are completely welded, then the reinforcing bar on the bent side needs to melt a longer piece of material until the welding surfaces of the two reinforcing bars are completely in contact, resulting in excessive material melting and large weld beads, which affects the use of the product. Utility Model Content

[0003] The purpose of this invention is to provide a precision calibration fixture for flash butt welding of reinforcing bars, which can adjust the placement angle of the reinforcing bars when the ends of the reinforcing bars are bent, thereby keeping the welding surfaces of the two reinforcing bars parallel and effectively ensuring the welding quality.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A precision calibration fixture for flash butt welding angle of steel bars includes a base, two lower clamping plates and two upper clamping plates. The middle part of the bottom surface of the two lower clamping plates is fixedly connected to the upper end of two support shafts respectively. The bottom end of the left support shaft is rotatably connected to the upper surface of the base through a bearing, and the bottom end of the right support shaft is rotatably connected to the middle part of the upper surface of the translation plate through a bearing.

[0006] The middle portions of the two support shafts are respectively fixedly connected to two worm gears, and the two worm gears are respectively meshed with two worms.

[0007] Furthermore, the optical axis of each worm gear is rotatably connected to the upper end of the two fixed plates three via bearings, and the bottom ends of the two fixed plates three on the left are fixedly connected to the base.

[0008] Furthermore, the bottom ends of the two fixed plates on the right are fixedly connected to the upper surface of the translation plate, and the front ends of the two worm gears are fixedly equipped with crank handles.

[0009] Furthermore, the bottom ends of the opposite sides of the two lower clamping plates are respectively fixedly connected to the opposite sides of the two fixed plates II, and the upper surface of each fixed plate II is fixedly connected to the bottom ends of the two electric push rods I.

[0010] Furthermore, the four electric push rods are arranged in pairs, and the upper ends of the two pairs of electric push rods are respectively fixedly connected to the bottom surfaces of the two support plates.

[0011] Furthermore, the rear sides of the two lower clamping plates are respectively fixedly connected to the bottom ends of the two fixed frames, and the upper end of each fixed frame is fixedly connected to the upper ends of the two electric push rods.

[0012] Furthermore, the four electric push rods are arranged in pairs, and the bottom ends of the two pairs of electric push rods are respectively fixedly connected to the upper surfaces of the two upper clamping plates.

[0013] Furthermore, the translation plate has sleeve holes on both the front and rear sides, and the two sleeve holes are respectively connected to the two sliding rods. The two ends of the two sliding rods are respectively fixedly connected to the opposite surfaces of the two fixed plates.

[0014] Furthermore, the bottom surfaces of both fixed plates are fixedly connected to the upper surface of the base, the left side of the translation plate is simultaneously fixedly connected to the right ends of the two electric push rods, and the fixed ends of the two electric push rods are fixedly connected to the left fixed plate.

[0015] Furthermore, the rear end of the upper surface of the base is fixedly connected to the bottom end of the stand, the upper end of the stand is simultaneously fixedly connected to two lasers, and mounting holes are provided at all four corners of the base.

[0016] The technical effects achieved by this utility model are as follows:

[0017] This invention connects the lower clamping plate to the translation plate and the base by setting a support shaft, and connects the worm gear and worm wheel to the support shaft. A laser is also installed at the top of the frame. When performing flash butt welding on reinforcing bars, the user can place two sections of reinforcing bars on the two lower clamping plates respectively. The lasers can then be turned on to generate two laser light curtains. The user can then move the reinforcing bars so that their end faces align with the laser light curtains. When the reinforcing bars bend and are placed horizontally on the support plate and lower clamping plate, the end faces of the reinforcing bars and the laser light curtains do not coincide. At this point, the user can rotate the corresponding worm gear, which uses the worm wheel to drive the support shaft, lower clamping plate, support plate, upper clamping plate, and reinforcing bars to rotate. During this process, the user can observe the alignment of the laser light curtains with the end faces of the reinforcing bars until the laser light curtains completely align with the end faces of the reinforcing bars, thereby adjusting the end faces of the two sections of reinforcing bars to a parallel and aligned state, effectively improving the subsequent welding quality. Attached Figure Description

[0018] Figure 1This is a front view structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the tray in this utility model;

[0020] Figure 3 This is a schematic diagram of the support shaft structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the translation plate in this utility model;

[0022] Figure 5 This is a structural schematic diagram of the central support frame of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base; 2. Translation plate; 3. Fixing plate one; 4. Lower clamping plate; 5. Fixing plate two; 6. Support plate; 7. Electric push rod one; 8. Upper clamping plate; 9. Fixing frame; 10. Electric push rod two; 11. Stand; 12. Fixing plate three; 13. Worm gear; 14. Worm wheel; 15. Support shaft; 16. Electric push rod three; 17. Slide rod; 18. Sleeve hole; 19. Mounting hole; 20. Laser. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figures 1-5 As shown, a precision calibration fixture for flash butt welding angle of steel bars includes a base 1, two lower clamping plates 4 and two upper clamping plates 8. The middle part of the bottom surface of the two lower clamping plates 4 is fixedly connected to the upper end of two support shafts 15 respectively. The bottom end of the left support shaft 15 is rotatably connected to the upper surface of the base 1 through a bearing, and the bottom end of the right support shaft 15 is rotatably connected to the middle part of the upper surface of the translation plate 2 through a bearing.

[0027] The middle parts of the two support shafts 15 are fixedly connected to the two worm gears 14 respectively, and the two worm gears 14 are respectively meshed with the two worms 13.

[0028] The optical axis of each worm gear 13 is rotatably connected to the upper end of two fixed plates 12 via bearings. The bottom ends of the two fixed plates 12 on the left are fixedly connected to the base 1. When the reinforcing bar is bent and placed horizontally on the support plate 6 and the lower clamping plate 4, the end face of the reinforcing bar does not coincide with the laser light curtain. At this time, the user can rotate the corresponding worm gear 13 to drive the support shaft 15, the lower clamping plate 4, the support plate 6, the upper clamping plate 8 and the reinforcing bar to rotate using the worm wheel 14. During this process, the user can observe the overlap state between the laser light curtain and the end face of the reinforcing bar until the laser light curtain completely overlaps with the end face of the reinforcing bar, thereby adjusting the end faces of the two sections of reinforcing bar to a parallel and aligned state, effectively improving the subsequent welding quality.

[0029] The bottom ends of the two fixed plates 12 on the right are fixedly connected to the upper surface of the translation plate 2, and the front ends of the two worm gears 13 are fixedly equipped with crank handles.

[0030] The bottom ends of the opposite sides of the two lower clamping plates 4 are fixedly connected to the opposite sides of the two fixed plates 5 respectively, and the upper surface of each fixed plate 5 is fixedly connected to the bottom ends of the two electric push rods 7.

[0031] Four electric push rods 7 are arranged in pairs, with the upper ends of the two sets of electric push rods 7 fixedly connected to the bottom surfaces of the two support plates 6 respectively. By connecting the electric push rods 7 to the support plates 6, when the end of the rebar is placed in the V-groove on the lower clamping plate 4, the rebars of different diameters sink to different depths in the V-groove, resulting in different static heights of the rebars. The user can control the extension and retraction of the electric push rods 7 to adjust the height of the support plates 6, thereby using the support plates 6 to lift and support the rebars to keep them horizontal and prevent the rebars from falling and tilting.

[0032] The rear sides of the two lower clamping plates 4 are fixedly connected to the bottom ends of the two fixed brackets 9 respectively, and the upper end of each fixed bracket 9 is fixedly connected to the upper end of the two electric push rods 10.

[0033] The four electric push rods 210 are arranged in pairs, and the bottom ends of the two pairs of electric push rods 210 are respectively fixedly connected to the upper surfaces of the two upper clamping plates 8.

[0034] The translation plate 2 has sleeve holes 18 on both the front and rear sides. The two sleeve holes 18 are respectively connected to the two slide rods 17. The two ends of the two slide rods 17 are respectively fixedly connected to the opposite surfaces of the two fixed plates 3. By opening sleeve holes 18 on the translation plate 2 and setting slide rods 17 to be connected to sleeve holes 18, the translation plate 2 is supported by the connection between slide rods 17 and sleeve holes 18, which effectively improves the stability of translation of the translation plate 2 and the right lower clamping plate 4.

[0035] The bottom surfaces of both fixed plates 3 are fixedly connected to the upper surface of the base 1, and the left side of the translation plate 2 is simultaneously fixedly connected to the right end of both electric push rods 16. The fixed ends of both electric push rods 16 are fixedly connected to the left fixed plate 3.

[0036] The rear end of the upper surface of the base 1 is fixedly connected to the bottom end of the stand 11. The upper end of the stand 11 is simultaneously fixedly connected to two lasers 20. Mounting holes 19 are provided at the four corners of the base 1.

[0037] The working principle of this utility model is as follows: When using this device, the base 1 can be installed and fixed on the welding equipment using the mounting hole 19. When performing flash butt welding on the reinforcing bars, the user can place two sections of reinforcing bars on the two lower clamping plates 4 respectively, and control the electric push rod 7 to extend and retract to adjust the height of the support plate 6 until the support plate 6 contacts the reinforcing bars. At this time, the laser 20 can be turned on to generate two laser light curtains. Then the user can move the reinforcing bars so that the end face of the reinforcing bars corresponds to the laser light curtain. When the reinforcing bars are bent and placed horizontally on the support plate 6 and the lower clamping plate 4, the end face of the reinforcing bars does not coincide with the laser light curtain. At this time, the user can rotate the corresponding worm gear 13 to drive the support shaft 15, the lower clamping plate 4, the support plate 6, the upper clamping plate 8 and the reinforcing bars to rotate using the worm wheel 14. During this process, the user can observe the overlap state between the laser light curtain and the end face of the reinforcing bars until the laser light curtain completely overlaps with the end face of the reinforcing bars.

[0038] Then, the user can control the electric push rod 2 10 to extend, causing the upper clamping plate 8 to descend until the upper clamping plate 8 stably clamps the reinforcing bar, and control the electric push rod 3 16 to retract, causing the translation plate 2, the lower right clamping plate 4, and the right reinforcing bar to move to the left until the end faces of the reinforcing bars on both sides contact for flash welding. After welding is completed, the user can control the electric push rod 2 10 to retract, causing the upper clamping plate 8 to move upward, causing the upper clamping plate 8 to detach from the reinforcing bar, and then remove the welded reinforcing bar from the lower clamping plate 4 and the support plate 6.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A precision calibration fixture for flash butt welding angle of reinforcing bars, comprising a base (1), two lower clamping plates (4) and two upper clamping plates (8), characterized in that: The bottom middle parts of the two lower clamping plates (4) are respectively fixedly connected to the upper ends of the two support shafts (15). The bottom end of the support shaft (15) on the left is rotatably connected to the upper surface of the base (1) through a bearing. The bottom end of the support shaft (15) on the right is rotatably connected to the middle part of the upper surface of the translation plate (2) through a bearing. The middle parts of the two support shafts (15) are fixedly connected to the two worm gears (14), and the two worm gears (14) are respectively meshed with the two worms (13).

2. The steel bar flash butt welding angle precision calibration fixture according to claim 1, characterized in that: The optical axis of each worm (13) is rotatably connected to the upper end of two fixed plates (12) via bearings, and the bottom ends of the two fixed plates (12) on the left are fixedly connected to the base (1).

3. The steel bar flash butt welding angle precision calibration fixture according to claim 2, characterized in that: The bottom ends of the two fixed plates (12) on the right are fixedly connected to the upper surface of the translation plate (2), and the front ends of the two worm gears (13) are fixedly provided with crank handles.

4. The steel bar flash butt welding angle precision calibration fixture according to claim 1, characterized in that: The bottom ends of the opposite sides of the two lower clamping plates (4) are respectively fixedly connected to the opposite sides of the two fixing plates (5), and the upper surface of each fixing plate (5) is fixedly connected to the bottom ends of the two electric push rods (7).

5. A precision calibration fixture for flash butt welding angle of reinforcing bars according to claim 4, characterized in that: The four electric push rods (7) are arranged in pairs, and the upper ends of the two sets of electric push rods (7) are respectively fixedly connected to the bottom surfaces of the two support plates (6).

6. A precision calibration fixture for flash butt welding angle of reinforcing bars according to claim 1, characterized in that: The rear sides of the two lower clamps (4) are respectively fixedly connected to the bottom ends of the two fixed frames (9), and the upper end of each fixed frame (9) is fixedly connected to the upper end of the two electric push rods (10).

7. A precision calibration fixture for flash butt welding angle of reinforcing bars according to claim 6, characterized in that: The four electric push rods (10) are arranged in pairs, and the bottom ends of the two sets of electric push rods (10) are fixedly connected to the upper surfaces of the two upper clamping plates (8).

8. A precision calibration fixture for flash butt welding angle of reinforcing bars according to claim 1, characterized in that: The translation plate (2) has sleeve holes (18) on both the front and rear sides. The two sleeve holes (18) are respectively connected to the two slide rods (17). The two ends of the two slide rods (17) are respectively fixedly connected to the opposite surfaces of the two fixing plates (3).

9. A precision calibration fixture for flash butt welding angle of reinforcing bars according to claim 8, characterized in that: The bottom surfaces of the two fixed plates (3) are fixedly connected to the upper surface of the base (1), and the left side of the translation plate (2) is simultaneously fixedly connected to the right end of the two electric push rods (16). The fixed ends of the two electric push rods (16) are fixedly connected to the left fixed plate (3).

10. A precision calibration fixture for flash butt welding angle of reinforcing bars according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to the bottom end of the stand (11), and the upper end of the stand (11) is fixedly connected to two lasers (20) at the same time. Mounting holes (19) are provided at the four corners of the base (1).

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