A cooling device for circular tube rotary surfacing

Abstract

A kind of cooling device for circular tube rotary surfacing, including base, lifting part, angle adjusting part, baffle and blowing part;The four corners of the bottom end face of the base are provided with universal brake wheel;The lifting part is set on base;The angle adjusting part is set on lifting part;The baffle is set on angle adjusting part;The blowing part is set on baffle.The utility model effectively carries out cooling treatment to the surfacing layer of circular tube, avoids circular tube overheating.

Description

Technical Field

[0001] This utility model relates to a cooling device, and more particularly to a device capable of cooling the high-temperature weld overlay layer on the sidewall of a circular tube, belonging to the field of rotary weld overlay cooling technology. Background Technology

[0002] During the welding repair of hollow round tubes, the unique dimensions of the tubes often lead to a high concentration of heat. This heat concentration not only makes it difficult for weld slag to detach properly during normal welding operations, increasing the difficulty and complexity of the work, but also easily causes workpiece deformation, affecting its original dimensional accuracy and shape. More seriously, prolonged exposure to high temperatures can alter the internal microstructure of the workpiece metal, causing the alloying elements in the weld overlay to burn off, thus severely weakening the workpiece's performance and affecting its actual use and service life. Therefore, a device is needed to cool the weld overlay without affecting the welding operation. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cooling device for rotary welding of round tubes, which can effectively cool the weld layer and prevent the hollow tube from overheating.

[0004] The problem described in this utility model is solved by the following technical solution: A cooling device for rotary welding of round tubes includes a base, a lifting section, an angle adjustment section, a baffle, and an air blowing section; the four corners of the bottom surface of the base are provided with universal brake wheels; the lifting section is mounted on the base; the angle adjustment section is mounted on the lifting section; the baffle is mounted on the angle adjustment section; and the air blowing section is mounted on the baffle.

[0005] The aforementioned cooling device for rotary welding of circular tubes includes a lifting section comprising a vertical plate, a base plate, a top plate, a round rod, a handle, a lead screw, a lead screw nut, and a slider. The vertical plate is mounted on the side wall of the base. The top plate is mounted at the top of the vertical plate, and the base plate is mounted at the bottom of the vertical plate. A blind hole is provided at the center of the top surface of the base plate, and the outer ring of the bearing is connected to the inner wall of the blind hole in the base plate. A through hole is provided at the center of the top plate, and the round rod passes through the through hole in the top plate. A handle is provided at the top of the round rod. The bottom end of the round rod is connected to the top of the lead screw, and the bottom end of the lead screw is connected to the inner wall of the inner ring of the bearing on the base plate. A vertical slide rail is provided on the end face of the vertical plate away from the base, and the slider is slidably mounted on the slide rail of the vertical plate. A through hole is provided on the slider, and the lead screw nut is located in the through hole of the slider, with the lead screw passing through the lead screw nut.

[0006] The aforementioned cooling device for rotary welding of circular tubes includes an angle adjustment section comprising a first support rod, a second support rod, a limiting turntable, a central rod, and a pin. The slider has a first support rod and a second support rod respectively positioned at its two ends away from the vertical plate. A central rod is axially connected between the first and second support rods. The limiting turntable has a hole at its center, and the outer wall of the central rod is fixedly connected to the inner wall of the central hole of the limiting turntable. Multiple limiting holes are evenly distributed along the circumference of the outer edge of the limiting turntable. Positioning holes are provided at corresponding positions on the first and second support rods, and the pin passes through both the positioning holes on the first and second support rods and the corresponding limiting holes on the limiting turntable.

[0007] The cooling device described above for rotary welding of round tubes has one end of the baffle set on the outer circumference of the limiting turntable; the end of the baffle away from the limiting turntable has a notch, and the width of the notch is greater than the maximum width of the weld overlay layer.

[0008] The cooling device described above for rotary welding of round tubes includes an air blowing section comprising a U-shaped hollow tube and nozzles; the U-shaped hollow tube is disposed on the end face of the baffle away from the welding torch head, and the notch of the baffle is surrounded by the U-shaped hollow tube; a connector is provided on the U-shaped hollow tube, and the connector is connected to a high-pressure air source through an air pipe; multiple nozzles are evenly arranged on the inner wall of the U-shaped hollow tube, and the nozzles are connected to the inner cavity of the U-shaped hollow tube.

[0009] This invention adjusts the position of the baffle through a lifting and angle adjustment mechanism to ensure that it can reliably press against the outer wall of the circular tube and that the weld overlay passes through the notch in the baffle. The weld overlay is cooled by an air blowing mechanism. The baffle's function is to prevent the cooling air from blowing directly onto the weld overlay gun head, thus avoiding affecting the progress and quality of the weld overlay operation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.

[0011] The list of labels in the diagram is as follows: 1. Base, 2. Baffle, 3. Vertical plate, 4. Bottom plate, 5. Top plate, 6. Handle, 7. Lead screw nut, 8. Slider, 9. First support rod, 10. Second support rod, 11. Limiting turntable, 12. Pin, 13. U-shaped hollow tube. Detailed Implementation

[0012] See Figure 1 and Figure 2This utility model includes a base 1, a lifting part, an angle adjustment part, a baffle 2, and an air blowing part. Rotary welding is a process that achieves circumferential weld overlay by rotating the workpiece and fixing the welding gun. Its core feature is that the workpiece is rotated at a constant speed using a turntable, while the welding gun remains in a fixed position for fusion. The four corners of the bottom surface of the base 1 are equipped with universal brake wheels. The lifting part is mounted on the base 1. The lifting part can adjust the vertical height of the baffle 2, thereby cooperating with the angle adjustment part to make the baffle press against the side wall of the circular tube at a suitable position. The angle adjustment part is mounted on the lifting part. The baffle 2 is mounted on the angle adjustment part. The air blowing part is mounted on the baffle 2. The air blowing part can cool the weld overlay layer by blowing air.

[0013] The lifting mechanism includes a vertical plate 3, a base plate 4, a top plate 5, a round rod, a handle 6, a lead screw, a lead screw nut 7, and a slider 8. The vertical plate 3 is mounted on the side wall of the base 1. The top plate 5 is located at the top of the vertical plate 3, and the base plate 4 is located at the bottom of the vertical plate 3. A blind hole is provided at the center of the top surface of the base plate 4, and the outer ring of the bearing is connected to the inner wall of the blind hole of the base plate 4. A through hole is provided at the center of the top plate 5, and the round rod passes through the through hole of the top plate 5. A handle 6 is provided at the top of the round rod. The bottom end of the round rod is connected to the top end of the lead screw. The bottom end of the lead screw is connected to the inner wall of the bearing inner ring on the base plate 4; rotating the handle 6 can drive the round rod to rotate, which in turn drives the lead screw to rotate. The rotating lead screw drives the lead screw nut to move along the lead screw axis, and the lead screw nut drives the slider 8 to slide synchronously, which in turn drives the baffle to rise and fall; the end face of the vertical plate 3 away from the base 1 is provided with a vertical slide rail, and the slider 8 is slidably set on the slide rail of the vertical plate 3; the slider 8 is provided with a through hole, and the lead screw nut 7 is set in the through hole of the slider 8, and the lead screw passes through the lead screw nut 7.

[0014] The angle adjustment section includes a first support rod 9, a second support rod 10, a limiting turntable 11, a center rod, and a pin 12. The slider 8 has a first support rod 9 and a second support rod 10 respectively at its ends away from the vertical plate 3. A center rod is axially connected between the first support rod 9 and the second support rod 10; that is, bearings are embedded in the side walls of the two support rods that are close to each other, and the end of the center rod is connected to the inner wall of the bearing's inner ring. The limiting turntable 11 has a hole in its center, and the center of the outer wall of the center rod is fixedly connected to the inner wall of the center hole of the limiting turntable 11. Since the central rod can rotate between the two support rods, the limiting turntable 11 can also be selected accordingly, thereby achieving the purpose of adjusting the baffle angle. The outer edge of the limiting turntable 11 is uniformly provided with multiple limiting holes along its circumference. Positioning holes are provided at the corresponding positions of the first support rod 9 and the second support rod 10, and the pin 12 passes through the positioning holes of the first support rod 9 and the second support rod 10 and the corresponding limiting holes on the limiting turntable 11. After the pin is in place, the position of the limiting turntable 11 is also restricted and cannot be selected, thereby limiting the tilt angle of the baffle.

[0015] One end of the baffle 2 is set on the outer circumferential wall of the limiting turntable 11; the end of the baffle 2 away from the limiting turntable 11 is provided with a notch, and the width of the notch is greater than the maximum width of the weld overlay layer; the function of the notch is to allow the weld overlay layer to pass smoothly, ensuring that only the weld overlay layer can pass under the baffle, and minimizing the impact of the cooling air on the weld overlay gun head.

[0016] The air blowing section includes a U-shaped hollow tube 13 and nozzles; the U-shaped hollow tube 13 is disposed on the end face of the baffle 2 away from the welding torch head, and the notch of the baffle 2 is surrounded by the U-shaped hollow tube 13; a connector is provided on the U-shaped hollow tube 13, and the connector is connected to the air source through an air pipe; multiple nozzles are evenly arranged on the inner wall of the U-shaped hollow tube 13, and the nozzles are connected to the inner cavity of the U-shaped hollow tube 13; the nozzles are aimed at the weld overlay layer passing through the notch; when the weld overlay layer passes through the nozzles, it is cooled by the blown air.

[0017] Operating principle: Before the welding operation, move this device to the front of the round tube. Adjust the position of the baffle 2 according to the position of the welding torch head, ensuring that the position of the baffle is one-fifth of the circumference of the round tube. The steps for adjusting the baffle 2 are as follows: rotate the handle 6 to raise and lower the slider 8, and adjust the position of the limiting turntable 11 to adjust the tilt angle of the baffle 2. Then push the base 1 so that the baffle touches the side wall of the round tube, ensuring that the notch on the baffle can be passed through by the weld overlay layer. After the baffle position is adjusted, insert the pin to fix the limiting turntable. The brake wheel of the base 1 should stop moving. Then start the welding operation. The weld overlay layer passes through the baffle 2 and the U-shaped hollow tube 13 in sequence. When the weld overlay layer passes through the U-shaped hollow tube, start the air source to supply air into the U-shaped hollow tube. Cooling air is blown onto the weld overlay layer for cooling. After the weld overlay layer is completely cooled to a reasonable temperature range, remove this device, and the welding is completed.

Claims

1. A cooling device for rotary overlay welding of circular tubes, characterized in that: It includes a base (1), a lifting part, an angle adjustment part, a baffle (2) and an air blowing part; the four corners of the bottom surface of the base (1) are provided with universal brake wheels; the lifting part is set on the base (1); the angle adjustment part is set on the lifting part; the baffle (2) is set on the angle adjustment part; the air blowing part is set on the baffle (2).

2. The cooling device for rotary overlay welding of circular tubes according to claim 1, characterized in that: The lifting mechanism includes a vertical plate (3), a base plate (4), a top plate (5), a round rod, a handle (6), a lead screw, a lead screw nut (7), and a slider (8); the vertical plate (3) is mounted on the side wall of the base (1); the top plate (5) is mounted on the top of the vertical plate (3), and the base plate (4) is mounted on the bottom of the vertical plate (3); a blind hole is provided at the center of the top surface of the base plate (4), and the outer ring of the bearing is connected to the inner wall of the blind hole of the base plate (4); a through hole is provided at the center of the top plate (5). The round rod passes through the through hole of the top plate (5), and the top of the round rod is provided with a handle (6); the bottom end of the round rod is connected to the top end of the lead screw, and the bottom end of the lead screw is connected to the inner wall of the bearing inner ring on the base plate (4); the end face of the vertical plate (3) away from the base (1) is provided with a vertical slide rail, and the slider (8) is slidably set on the slide rail of the vertical plate (3); the slider (8) is provided with a through hole, and the lead screw nut (7) is set in the through hole of the slider (8), and the lead screw passes through the lead screw nut (7).

3. The cooling device for rotary overlay welding of circular tubes according to claim 2, characterized in that: The angle adjustment part includes a first support rod (9), a second support rod (10), a limiting turntable (11), a center rod, and a pin (12); the two ends of the slider (8) away from the vertical plate (3) are respectively provided with the first support rod (9) and the second support rod (10); the first support rod (9) and the second support rod (10) are axially connected to each other; the center of the limiting turntable (11) is provided with a hole, and the center of the outer wall of the center rod is fixedly connected to the inner wall of the center hole of the limiting turntable (11); the outer edge of the limiting turntable (11) is uniformly provided with multiple limiting holes along its circumference; the first support rod (9) and the second support rod (10) are provided with positioning holes at corresponding positions, and the pin (12) passes through the positioning holes of the first support rod (9) and the second support rod (10) and the corresponding limiting holes on the limiting turntable (11) at the same time.

4. The cooling device for rotary overlay welding of circular tubes according to claim 3, characterized in that: One end of the baffle (2) is set on the outer circumference of the limiting turntable (11); the end of the baffle (2) away from the limiting turntable (11) is provided with a notch, and the width of the notch is greater than the maximum width of the weld overlay.

5. The cooling device for rotary overlay welding of circular tubes according to claim 4, characterized in that: The air blowing part includes a U-shaped hollow tube (13) and a nozzle; the U-shaped hollow tube (13) is set on the end face of the baffle (2) away from the welding gun head, and the notch of the baffle (2) is surrounded by the U-shaped hollow tube (13); a connector is provided on the U-shaped hollow tube (13), and the connector is connected to the high-pressure air source through an air pipe; multiple nozzles are evenly arranged on the inner wall of the U-shaped hollow tube (13), and the nozzles are connected to the inner cavity of the U-shaped hollow tube (13).

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