Circular seam polishing device

Abstract

The utility model discloses a circular seam polishing device which is characterized in that a lifting platform is arranged on a base, a supporting rail on the lifting platform is connected with a rack in a sliding mode, a polishing wheel, an auxiliary wheel and a driving motor are arranged on the rack, an output shaft of the driving motor is connected with a driving wheel, and a polishing belt is wound on the polishing wheel, the auxiliary wheel and the driving wheel. The driving motor can drive the driving wheel to rotate, power of the driving wheel is transmitted to the grinding wheel and the auxiliary wheel through the grinding belt, the driving motor is used as a power source to drive the driving wheel, the grinding wheel, the auxiliary wheel and the grinding belt to operate, the grinding belt can grind the circular seam, and the lifting platform can ascend and descend to adapt to the position of the pressure container. The linear push rod is arranged on the supporting rail, the linear push rod can drive the machine frame to move forwards or backwards, the grinding belt can press the circular seam for grinding and reset after grinding, and compared with a traditional mode, the circular seam grinding device has the advantages of saving time and labor and improving grinding efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of cylinder longitudinal seam assembly clamps, and particularly relates to a circumferential seam grinding device. Background Technology

[0002] Grinding the circumferential weld seam of pressure vessels is a critical step in the manufacturing and maintenance process, primarily for the following reasons: It eliminates stress concentration; the weld surface may have defects such as protrusions, depressions, or undercut, and these irregular areas are prone to stress concentration, leading to fatigue cracks and affecting vessel safety. Grinding smooths the surface, reducing the risk of stress concentration; it facilitates non-destructive testing; weld inspection (such as X-ray and ultrasonic testing) requires a smooth surface, otherwise a rough surface may mask internal defects or lead to misjudgments; grinding ensures accurate inspection results; and it improves appearance and coating adhesion. A smooth weld surface facilitates subsequent painting or anti-corrosion treatment, improving coating uniformity and adhesion. Traditional grinding methods include belt grinders and polishing machines.

[0003] In the manufacturing process of pressure vessels, equipment is increasingly moving towards larger diameters and thicker walls, and product delivery times are also being compressed. This necessitates manufacturers to improve the quality and efficiency of grinding circumferential seams. Especially when there are many circumferential seams and the workload is heavy, traditional grinding methods cannot meet production efficiency requirements, which raises the need for ways to improve the efficiency of circumferential seam grinding. Utility Model Content

[0004] (1) Technical problem to be solved: In view of the characteristics of equipment gradually becoming larger in diameter and thicker in the process of pressure vessel manufacturing, the traditional circumferential seam grinding method has the defects of being time-consuming, labor-intensive and inefficient. This utility model provides a circumferential seam grinding device to improve the efficiency of circumferential seam grinding.

[0005] (2) The technical solution adopted by this utility model is as follows:

[0006] A circumferential seam grinding device includes a base, a lifting platform connected to the base via a support assembly, a support rail on the lifting platform, a frame slidably connected to the support rail, a grinding wheel and an auxiliary wheel on the frame, a drive motor on the frame, the output shaft of the drive motor connected to the drive wheel, a grinding belt wound around the grinding wheel, the auxiliary wheel and the drive wheel, the drive motor causing the drive wheel to rotate and the power of the drive wheel being transmitted to the grinding wheel and the auxiliary wheel via the grinding belt, and a linear push rod on the support rail at the end away from the grinding wheel, one end of the linear push rod being fixed to the support rail and the other end being fixed to the frame.

[0007] A further technical solution is that the support component includes an outer tube and an inner tube. The lower end of the outer tube is fixed to the base, the inner tube is located inside the outer tube and is slidably connected to it, the upper end of the inner tube extends out of the outer tube, and the upper end of the inner tube is fixedly connected to a lifting platform. The outer tube has a positioning hole, and the inner tube has multiple through holes. A positioning pin passes through the positioning hole and one of the through holes.

[0008] A further technical solution is that one end of the support rail near the linear push rod is hinged to the support rail via a pin, and the other end of the support rail is provided with an angle adjustment device. The angle adjustment device includes a guide rail connected to the lifting platform. An arc-shaped groove is opened on the guide rail, and the circular position of the arc-shaped groove coincides with the central axis of the pin. A positioning screw is provided on the support rail, and the positioning screw passes through the arc-shaped groove and is provided with a locking nut.

[0009] A further technical solution is that the lifting platform is provided with an installation hole in the middle, a fixed screw sleeve is fixed in the installation hole, and a limit stud is threaded inside the screw sleeve, with the upper end of the limit stud contacting the support rail.

[0010] A further technical solution is that the bottom of the base is provided with a set of movable wheels.

[0011] A further technical solution is that a support rod is provided on the base, a fixing screw is provided on the base, the fixing screw passes through the base and is threadedly connected to it, and a crank is provided at the upper end of the fixing screw.

[0012] A further technical solution is that the auxiliary wheel is connected to the support rod via a wheel axle one, one end of the support rod is hinged to the frame via a pin one, the other end of the support rod is hinged to one end of the telescopic adjustment screw via a pin two, and the other end of the telescopic adjustment screw is hinged to the frame via a pin three.

[0013] A further technical solution is that the grinding wheel is connected to the telescopic square rod through the wheel axle two, and a square sleeve is provided on the frame. The telescopic square rod is slidably connected inside the square sleeve, and a tightening screw is threaded on the square sleeve. The end of the tightening screw is in contact with the telescopic square rod.

[0014] (3) Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: A lifting platform is set on the base, and the support rail on the lifting platform is slidably connected to the frame. A grinding wheel and an auxiliary wheel are set on the frame. A drive motor is set on the frame, and the output shaft of the drive motor is connected to the drive wheel. A grinding belt is wound on the grinding wheel, the auxiliary wheel and the drive wheel. The drive motor can make the drive wheel rotate and the power of the drive wheel is transmitted to the grinding wheel and the auxiliary wheel by the grinding belt. The drive motor is used as the power source to drive the drive wheel, the grinding wheel, the auxiliary wheel and the grinding belt to run. The grinding belt can grind the circumferential seam. The lifting platform can be raised and lowered to adapt to the position of the pressure vessel. By setting a linear push rod on the support rail, one end of the linear push rod is fixed to the support rail and the other end is fixed to the frame. The linear push rod can drive the frame to move forward or backward, so that the grinding belt can press the circumferential seam for grinding. After grinding, it can be reset. Compared with the traditional method, this utility model has the advantages of saving time and effort and can improve grinding efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of each component on the lifting platform described in this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 3 yes Figure 1 A schematic diagram of the structure on the other side of the state shown;

[0018] Figure 4 This is a schematic diagram of the frame described in this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-4 As shown. A circumferential seam grinding device includes a base 1, a lifting platform 2 connected to the base 1 via a support assembly, a support rail 3 on the lifting platform 2, a frame 4 slidably connected to the support rail 3, a grinding wheel 5 and an auxiliary wheel 6 on the frame 4, a drive motor 7 on the frame 4, the output shaft of the drive motor 7 connected to a drive wheel 8, a grinding belt 9 wound around the grinding wheel 5, the auxiliary wheel 6 and the drive wheel 8, the drive motor 7 can cause the drive wheel 8 to rotate and the power of the drive wheel 8 is transmitted to the grinding wheel 5 and the auxiliary wheel 6 by the grinding belt 9, and a linear push rod 10 is provided on the support rail 3 at the end away from the grinding wheel 5, one end of the linear push rod 10 is fixed to the support rail 3 and the other end is fixed to the frame 4.

[0021] In use, the pressure vessel is placed on a rotating platform (a roller frame that allows the pressure vessel to rotate in a horizontal position). The circumferential seam grinding device is placed on the pressure vessel. The height of the lifting platform 2 is adjusted so that the grinding belt 9 contacts the circumferential seam. The linear push rod 10 can be a cylinder, which can push the frame 4 to press the grinding belt 9 against the circumferential seam of the pressure vessel, thus ensuring the grinding effect. The drive motor 7 drives the drive wheel 8 to rotate, and the drive wheel 8 rotates the grinding wheel 5 and the auxiliary wheel 6 through the grinding belt 9. During the grinding process, the pressure vessel needs to rotate continuously on the rotating platform to achieve grinding of the entire circumferential seam. Slide grooves 31 are opened on both sides of the support rail 3, and the bottom of the frame 4 is equipped with sliders 32 that match the slide grooves.

[0022] The support assembly includes an outer tube 11 and an inner tube 12. The lower end of the outer tube 11 is fixed to the base 1. The inner tube 12 is located inside the outer tube 11 and is slidably connected to it. The upper end of the inner tube 12 extends out of the outer tube 11, and the upper end of the inner tube 12 is fixedly connected to the lifting platform 2. The outer tube 11 has a positioning hole 13, and the inner tube 12 has multiple through holes 14. A positioning pin 15 passes through the positioning hole 13 and one of the through holes 14. By using a crane to raise or lower the inner tube 12, and then repositioning it by the positioning pin 15, the height of the lifting platform 2 can be changed. The support assembly HIA can be used with a hydraulic cylinder as a power source for raising or lowering to achieve height adjustment.

[0023] One end of the support rail 3 near the linear push rod 10 is hinged to the support rail 3 via a pin. The other end of the support rail 3 is equipped with an angle adjustment device, which includes a guide rail 16 connected to the lifting platform 2. The guide rail 16 has an arc-shaped groove 17, the circular position of which coincides with the central axis of the pin. The support rail 3 is equipped with a positioning screw 18, which passes through the arc-shaped groove 17 and has a locking nut 19. The lifting platform 2 has a mounting hole in the middle, and a fixing sleeve 20 is fixed in the mounting hole. The internal thread of the sleeve 20 has a limit stud 21, the upper end of which contacts the support rail 3. After loosening the locking nut 19, rotate the limiting stud 21 to raise it and lift the support rail 3, or rotate the limiting stud 21 to lower it, and the support rail 3 will also lower. In this way, the angle of the support rail 3 can be adjusted, and thus the angle of the grinding belt 9 can be adjusted. The grinding belt 9 at the position of the grinding wheel 5 can be selected to contact the annular gap, so that the contact area is small, or the grinding belt 9 at the position between the grinding wheel 5 and the auxiliary wheel 6 can be selected to contact the annular gap, so that the contact area is large.

[0024] The bottom of the base 1 is equipped with a set of casters 22 for easy movement of the device. When the device is movable, the linear push rod 10 can be selected as a spring telescopic rod, that is, a spring telescopic rod is set between the piston rod and the sleeve. The spring can make the piston rod always tend to extend.

[0025] A support rod 23 is provided on the base 1, and a fixing screw 24 is provided on the base 1. The fixing screw 24 passes through the base 1 and is threaded to it. A crank handle 25 is provided at the upper end of the fixing screw 24. By cranking the crank handle 25, the fixing screw 24 can be lowered to press against the ground, thereby positioning the device.

[0026] The auxiliary wheel 6 is connected to the support rod 26 via axle 1. One end of the support rod 26 is hinged to the frame 4 via pin 1, and the other end of the support rod 26 is hinged to one end of the telescopic adjustment screw 27 via pin 2. The other end of the telescopic adjustment screw 27 is hinged to the frame 4 via pin 3. The position of the auxiliary wheel 6 can be adjusted by adjusting the length of the telescopic adjustment screw 27. The telescopic adjustment screw 27 is a telescopic rod connected to the sleeve rod via a thread, allowing for telescopic movement. The grinding wheel 5 is connected to the telescopic square rod 28 via axle 2. A square sleeve 29 is provided on the frame 4, and the telescopic square rod 28 is slidably connected inside the square sleeve 29. A tightening screw 30 is threaded onto the square sleeve 29, and the end of the tightening screw 30 contacts the telescopic square rod 28. Loosening the tightening screw 30 can adjust the position of the telescopic square rod 28, thereby adjusting the position of the grinding wheel 5. The positions of both the auxiliary wheel 6 and the grinding wheel 5 are adjustable, allowing for changes in the angle of the grinding belt 9 between them.

[0027] The above are merely preferred embodiments of this utility model.

Claims

1. A ring seam polishing device, characterized in that, The base (1) is connected with the lifting platform (2) through the support assembly, the support rail (3) is arranged on the lifting platform (2), the rack (4) is slidably connected on the support rail (3), the grinding wheel (5) and the auxiliary wheel (6) are arranged on the rack (4), the driving motor (7) is arranged on the rack (4), the output shaft of the driving motor (7) is connected with the driving wheel (8), the grinding belt (9) is arranged on the grinding wheel (5), the auxiliary wheel (6) and the driving wheel (8), the driving motor (7) can drive the driving wheel (8) to rotate, and the power of the driving wheel (8) is transmitted to the grinding wheel (5) and the auxiliary wheel (6) through the grinding belt (9), the linear push rod (10) is arranged on the support rail (3) away from the grinding wheel (5), one end of the linear push rod (10) is fixed with the support rail (3), and the other end is fixed with the rack (4).

2. A ring joint finishing device according to claim 1 wherein, The support assembly comprises an outer tube (11) and an inner tube (12), the lower end of the outer tube (11) is fixed with the base (1), the inner tube (12) is arranged in the outer tube (11) and is slidably connected with the outer tube (11), the upper end of the inner tube (12) extends out of the outer tube (11), and the upper end of the inner tube (12) is fixedly connected with the lifting platform (2), a positioning hole (13) is formed in the outer tube (11), a plurality of through holes (14) are formed in the inner tube (12), and a positioning pin (15) is arranged in the positioning hole (13) and one of the through holes (14).

3. A ring seam polishing device according to claim 1, wherein, The end of the support rail (3) close to the linear push rod (10) is hingedly connected with the support rail (3) through a pin shaft, the other end of the support rail (3) is provided with an angle adjusting device, the angle adjusting device comprises a guide rail (16) connected with the lifting platform (2), an arc-shaped notch (17) is formed in the guide rail (16), the circular position of the arc-shaped notch (17) is coincided with the central axis of the pin shaft, a positioning screw rod (18) is arranged on the support rail (3) and penetrates the arc-shaped notch (17), and a locking nut (19) is arranged on the positioning screw rod (18).

4. A ring joint finishing device as set forth in claim 1 wherein, A mounting hole is arranged in the middle of the lifting platform (2), a threaded sleeve (20) is fixed in the mounting hole, a limiting screw column (21) is arranged in the threaded sleeve (20) in a threaded manner, and the upper end of the limiting screw column (21) is in contact with the support rail (3).

5. A ring seam polishing device as claimed in claim 1, wherein, The bottom of the base (1) is provided with a moving wheel set (22).

6. A ring seam polishing device according to claim 1, wherein, A supporting rod (23) is arranged on the base (1), a fixed screw rod (24) is arranged on the base (1), the fixed screw rod (24) penetrates the base (1) and is connected with the base (1) in a threaded manner, and a crank handle (25) is arranged on the upper end of the fixed screw rod (24).

7. A ring seam polishing device as claimed in claim 1, wherein, The auxiliary wheel (6) is connected with a supporting rod (26) through an axle, one end of the supporting rod (26) is hingedly connected with the rack (4) through a pin rod, the other end of the supporting rod (26) is hingedly connected with one end of an extension adjusting screw rod (27) through a pin rod two, and the other end of the extension adjusting screw rod (27) is hingedly connected with the rack (4) through a pin rod three.

8. A ring seam polishing device according to claim 1, wherein, The polishing wheel (5) is connected with the second wheel shaft through the telescopic square rod (28), the square sleeve (29) is arranged on the frame (4), the telescopic square rod (28) is slidably connected in the square sleeve (29), the square sleeve (29) is threadedly connected with the jacking screw (30), and the end of the jacking screw (30) is in contact with the telescopic square rod (28).

Images