Automatic polishing device for welding seam of pressure container

Abstract

The invention relates to the technical field of pressure vessel machining, solves the technical problems that in the polishing process, a pressure vessel cannot be well fixed, consequently, the pressure vessel is prone to shaking, and the polishing effect on a welding seam is affected, and particularly relates to an automatic polishing device for the welding seam of the pressure vessel. Comprising a bottom plate and a pressure vessel main body needing to be subjected to weld joint polishing, a fixing mechanism used for fixing the pressure vessel main body is arranged on the bottom plate, two clamping plates can be driven to move towards the middle position to clamp the pressure vessel main body through the arranged clamping mechanism, meanwhile, a plurality of semi-cylindrical rubber cushions are arranged on the clamping plates, and the pressure vessel main body is clamped through the rubber cushions. In the moving process of the clamping plates, the rubber cushions can make contact with the surface of the pressure container body and deform, so that the rubber cushions are better attached to the surface of the pressure container body, the friction force is further increased, the two ends of the pressure container body are fixed, and the pressure container body cannot move or rotate; and subsequent grinding is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel processing, and in particular to an automatic welding seam grinding device for a pressure vessel. Background Art

[0002] A pressure vessel refers to a closed device that contains gas or liquid and bears a certain pressure. Most of them are barrel-shaped structures with a circular cross-section. At present, the common pressure vessels on the market are processed by welding, and welding will produce welds. If the welds are not polished clean, rust will occur, which will affect the service life of the pressure vessel and the cleanliness of the surface of the pressure vessel. However, during the polishing process, the pressure vessel cannot be well fixed, which makes the pressure vessel easy to shake, affecting the polishing effect of the weld. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an automatic grinding device for pressure vessel welds, which solves the technical problem that the pressure vessel cannot be well fixed during the grinding process, causing the pressure vessel to shake easily and affecting the grinding effect of the weld, thereby achieving the purpose of better fixing the pressure vessel and more convenient grinding effect.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: including a bottom plate and a pressure vessel body that needs to be polished for the weld, the bottom plate is provided with a fixing mechanism for fixing the pressure vessel body, and one side of the fixing mechanism is provided with a grinding mechanism for grinding the weld on the pressure vessel body, and a lifting support frame connected to the grinding mechanism, the fixing mechanism includes a fixing shell fixed on both sides of the bottom plate respectively, a positioning groove for placing the pressure vessel body is provided on the fixing shell, two L-shaped connecting plates distributed in upper and lower positions are movably provided in the fixing shell, and the upper and lower opposite sides of the two L-shaped connecting plates are fixedly connected with tooth plates, a gear is meshed between the two tooth plates, and the gear is installed on the inner wall of the fixing shell through a bearing seat, a motor for driving the gear to rotate is fixedly installed on the fixing shell, and the gears in the two fixing shells are connected by a connecting shaft, a clamping plate for clamping the pressure vessel body is provided on the L-shaped connecting plate, a through groove for moving the L-shaped connecting plate to the outside is provided on both sides of the fixing shell, and a stabilizing component for stabilizing the L-shaped connecting plate is provided in the through groove.

[0005] Preferably, the stabilizing component comprises a stabilizing plate rotatably connected to the bottom of a side wall of the through slot, and a threaded groove is provided on the stabilizing plate, and a bolt used in conjunction with the threaded groove is provided on the fixing shell.

[0006] Preferably, the shape of the positioning groove matches the outer shape of the pressure vessel body, the radius of the clamping plate is larger than the outer diameter of the pressure vessel body, and a plurality of rubber pads are provided on the clamping plate.

[0007] Preferably, a limiting plate is provided on the L-shaped connecting plate, and a limiting groove used in conjunction with the limiting plate is provided on the fixed shell.

[0008] Preferably, the grinding mechanism includes a connecting shell fixed on the lifting support frame, a driving wheel is rotatably connected to the connecting shell, a connecting plate is fixedly connected to the top of the inner wall of the connecting shell, and a motor 2 for driving the driving wheel to rotate is installed on the connecting plate, two rotatable rotating plates are hinged on the connecting plate, and driven wheels are installed on the other end of the rotating plates, the two driven wheels are connected to the driving wheel through a grinding belt transmission, and an adjustment component for adaptively adjusting the distance between the two driven wheels according to the shape of the pressure vessel body is provided inside the connecting shell.

[0009] Preferably, the adjusting component includes two through slots provided on the rotating plate, and a connecting slide rod penetrating the two through slots and fixed on both sides of the inner wall of the connecting shell, the connecting slide rod is slidably connected with a square block arranged inside the two through slots, a tension spring is sleeved on the connecting slide rod, and the two ends of the tension spring are respectively fixed on opposite sides of the two square blocks, a slide groove connected to the two through slots is provided on the rotating plate, and a slider sliding in the slide groove is fixedly connected to one side of the square block.

[0010] Preferably, the driving wheel and the driven wheel are both provided with a plurality of anti-skid pads for use with the grinding belt.

[0011] Preferably, the bottom of the connecting shell is open, and the length of the opening is adapted to the rotation amplitude of the rotating plate.

[0012] By means of the above technical solution, the present invention provides an automatic grinding device for pressure vessel welds, which has at least the following beneficial effects:

[0013] 1. The clamping mechanism provided in the present invention can drive the two clamping plates to move to the middle position to clamp the pressure vessel body. At the same time, a plurality of semi-cylindrical rubber pads are provided on the clamping plates. During the movement of the clamping plates, the rubber pads will contact the surface of the pressure vessel body and deform, so that the rubber pads are more closely fitted to the surface of the pressure vessel body, further increasing the friction force, thereby fixing the two ends of the pressure vessel body, preventing the pressure vessel body from moving or rotating, and facilitating subsequent grinding.

[0014] 2. The present invention provides a stabilizing component so that after the clamping plate clamps the pressure vessel body, the stabilizing plate fits against one side of the L-shaped connecting plate and forms a limit, so that the two clamping plates can stably clamp and position the pressure vessel body. Therefore, under the restriction of the stabilizing component, the L-shaped connecting plate will not shake or move, thereby achieving a more stable clamping effect on the pressure vessel.

[0015] 3. The present invention cooperates with a liftable lifting bracket to adjust the height of the grinding mechanism so that the grinding belt contacts the weld position. The main wheel is driven to rotate by motor 2, and at the same time, the two driven wheels are cooperated to enable the grinding belt to grind the weld position while moving, thereby realizing automatic grinding of the weld position, reducing work intensity and improving grinding efficiency.

[0016] 4. The present invention sets an adjustment component in the grinding mechanism so that the grinding belt can adaptively adjust the contact area during grinding according to the pressure vessels of different sizes and surface shapes, so that the grinding belt can fully contact and fit the weld on the curved surface, thereby achieving a better grinding effect. At the end of the grinding operation, the distance between the two driven wheels is manually shortened, which facilitates the rapid replacement of the grinding belt, replacing the previous method of loosening the driven wheel or the driving wheel to replace the grinding belt, thereby improving the replacement efficiency, thereby improving the grinding effect and efficiency with the adaptive cooperation between the grinding belt and the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0018] In the attached picture:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0021] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the fixing mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the grinding mechanism structure of the present invention;

[0023] Figure 5 It is a schematic cross-sectional structural diagram of the grinding mechanism of the present invention.

[0024] In the figure: 1. bottom plate; 2. fixing mechanism; 21. fixing shell; 22. clamping plate; 23. rubber cushion; 24. motor 1; 25. limit plate; 26. limit groove; 27. connecting shaft; 28. stabilizing component; 281. bolt; 282. stabilizing plate; 283. threaded groove; 29. ​​L-shaped connecting plate; 201. tooth plate; 202. gear; 203. through groove 1; 3. pressure vessel body; 4. lifting support frame; 5. grinding mechanism; 51. connecting shell; 52. driving wheel; 53. grinding belt; 54. driven wheel; 55. anti-skid pad; 56. connecting plate; 57. motor 2; 58. rotating plate; 59. adjusting component; 591. connecting slide rod; 592. tension spring; 593. slide groove; 594. square block; 595. slider; 501. through groove 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] Based on the existing problem that the pressure vessel cannot be fixed well during the grinding process, which causes the pressure vessel to shake easily and affects the grinding effect of the weld, please refer to Figure 1-Figure 3The present embodiment provides an automatic grinding device for the weld of a pressure vessel, which can clamp and fix the pressure vessel to achieve a better grinding effect. The device includes a bottom plate 1 and a pressure vessel body 3 whose weld needs to be ground. A fixing mechanism 2 for fixing the pressure vessel body 3 is provided on the bottom plate 1, and a grinding mechanism 5 for grinding the weld on the pressure vessel body 3 is provided on one side of the fixing mechanism 2, and a lifting support frame 4 connected to the grinding mechanism 5. The fixing mechanism 2 includes a fixing shell 21 fixed on both sides of the bottom plate 1, respectively, and a positioning groove for placing the pressure vessel body 3 is provided on the fixing shell 21. Two L-shaped connecting plates 2 distributed in upper and lower positions are movably provided in the fixing shell 21. 9, and the two L-shaped connecting plates 29 are fixedly connected with tooth plates 201 on the upper and lower opposite sides, and a gear 202 is meshed between the two tooth plates 201, and the gear 202 is installed on the inner wall of the fixed shell 21 through a bearing seat, and a motor 24 for driving the gear 202 to rotate is fixedly installed on the fixed shell 21, and the gears 202 in the two fixed shells 21 are connected by a connecting shaft 27. A clamping plate 22 for clamping the pressure vessel body 3 is provided on the L-shaped connecting plate 29, and a through groove 203 for moving the L-shaped connecting plate 29 to the outside is opened on both sides of the fixed shell 21, and a stabilizing component 28 for stabilizing the L-shaped connecting plate 29 is provided in the through groove 203, and the shape of the positioning groove is consistent with the pressure vessel body 3. The outer shape of the container body 3 matches the outer diameter of the container body 3. The radius of the clamping plate 22 is larger than the outer diameter of the pressure vessel body 3, and a plurality of rubber pads 23 are arranged on the clamping plate 22. A limit plate 25 is arranged on the L-shaped connecting plate 29. A limit groove 26 used in conjunction with the limit plate 25 is opened on the fixed shell 21. First, the two ends of the pressure vessel body 3 are placed on the two fixed shells 21. By starting the motor 24, the gear 202 will be driven to rotate clockwise, and the set gear 202 and the tooth plate 201 will be engaged, thereby driving the upper and lower two tooth plates 201 to move toward the inside of the fixed shell 21, thereby driving the two L-shaped connecting plates 29 to move toward the inside of the fixed shell 21, and then driving the two clamping plates 22 to the middle position. The pressure vessel body 3 can be moved and clamped. At the same time, two gears 202 are arranged in the two fixed shells 21, and the two gears 202 are connected by a connecting shaft 27. Starting the motor 24 will drive the two gears 202 to rotate synchronously, so that the two ends of the pressure vessel body 3 can be clamped synchronously. At the same time, a plurality of semi-cylindrical rubber pads 23 are arranged on the clamping plate 22. During the movement of the clamping plate 22, the rubber pads 23 will contact the surface of the pressure vessel body 3 and be compressed, so that the rubber pads 23 are more closely attached to the surface of the pressure vessel body 3, further increasing the friction force, so that the pressure vessel body 3 will not move or rotate, thereby achieving a better fixing effect.

[0028] During the use of the fixing mechanism 2, although the pressure vessel body 3 is clamped and fixed, the clamping plate 22 is not stable enough, resulting in unstable clamping of the pressure vessel body 3. Therefore, a stabilizing component 28 for stabilizing the clamping plate 22 is also provided to ensure better clamping and fixing of the pressure vessel body 3. The stabilizing component 28 includes a stabilizing plate 282 rotatably connected to the bottom of the side wall of the through groove 1 203, and a threaded groove 283 is provided on the stabilizing plate 282. The fixing shell 21 is provided with a bolt 281 used in conjunction with the threaded groove 283. After the pressure vessel body 3 is clamped and fixed, the stabilizing plate 282 arranged inside the through groove 1 203 is rotated upward to stabilize the pressure vessel body 3. The fixing plate 282 enters into the through groove 1 203 and keeps fit with the L-shaped connecting plate 29, and then the bolt 281 is rotated clockwise so that the bolt 281 passes through the fixing shell 21 and gradually enters into the thread groove 283, and the bolt 281 is continuously rotated until it completely enters into the thread groove 283 and cannot be rotated any more. At this time, under the action of the bolt 281, the clamping plate 22 can be firmly fixed inside the fixing shell 21, so that during the clamping process, the clamping plate 22 will not shake or move, thereby achieving a more stable clamping effect. At the same time, when the clamping plate 22 moves, it is necessary to ensure that the stabilizing plate 282 rotates to the lower position without blocking the clamping plate 22, so as to ensure that the movement of the clamping plate 22 is not restricted.

[0029] Example 2

[0030] On the basis of Example 1, Figure 4 and Figure 5As shown, based on the existing problem that after the pressure vessel is firmly clamped and fixed, the method of grinding the weld is usually manual grinding, which leads to greater fatigue of the workers and poor grinding effect, the device is also provided with a grinding mechanism 5, which includes a connecting shell 51 fixed on the lifting support frame 4, and a driving wheel 52 is rotatably connected to the connecting shell 51, and a connecting plate 56 is fixedly connected to the top of the inner wall of the connecting shell 51, and a motor 57 for driving the driving wheel 52 to rotate is installed on the connecting plate 56, two rotatable rotating plates 58 are hinged on the connecting plate 56, and the other end of the rotating plate 58 is installed with a driven wheel 54, the two driven wheels 54 and the driving wheel 52 are connected by a grinding belt 53, and the interior of the connecting shell 51 is provided with a An adjusting component 59 is provided for adaptively adjusting the distance between the two driven wheels 54. The driving wheel 52 and the driven wheel 54 are both provided with a plurality of anti-skid pads 55 used in conjunction with the grinding belt 53. By starting the second motor 57, the driving wheel 52 will be driven to rotate. The driving wheel 52 and the driven wheel 54 are connected by the grinding belt 53, and the driven wheel 54 is rotatable, thereby driving the grinding belt 53 to rotate. At the same time, a plurality of anti-skid pads 55 are provided on the surfaces of the driving wheel 52 and the driven wheel 54, thereby ensuring that the grinding belt 53 does not slip during the rotation process. By providing a lifting support frame 4 that can be lifted and lowered, the continuously rotating grinding belt 53 can contact the weld on the pressure vessel body 3, thereby achieving a certain grinding effect and reducing the manual labor to a certain extent.

[0031] During the use of the grinding mechanism 5, although the welding seam on the pressure vessel is ground and the labor is reduced, since the surface of the pressure vessel body 3 is mostly an arc surface, the contact area with the grinding belt 53 is small, resulting in poor welding effect. Therefore, an adjustment component 59 that can adaptively adjust the contact area is also provided. The adjustment component 59 includes a through slot 2 501 provided on the rotating plate 58, and a connecting slide bar 591 that penetrates the through slot 2 501 and is fixed on both sides of the inner wall of the connecting shell 51. The connecting slide bar 591 is slidably connected with a square block 594 arranged inside the through slot 2 501. A tension spring 592 is sleeved on the connecting slide bar 591, and the tension spring 592 is The two ends are respectively fixed on the opposite sides of the two square blocks 594. A slide groove 593 connected to the second through groove 501 is opened on the rotating plate 58. A slider 595 sliding in the slide groove 593 is fixedly connected to one side of the square block 594. The bottom opening of the connecting shell 51 and the length of the opening are adapted to the rotation amplitude of the rotating plate 58. By adjusting the height of the lifting support frame 4 that can be lifted and lowered, the distance between the grinding belt 53 and the surface of the pressure vessel body 3 can be changed. The grinding belt 53 is moved downward so that the grinding belt 53 is lifted up by the pressure vessel body 3. The pressure vessel body 3 is pressed, which will drive the two driven wheels 54 to move to the middle position, thereby making the two rotating wheels 54 move to the middle position. The plate 58 rotates along the two ends of the connecting plate 56, and the slider 595 set at the same time will move along the slide groove 593, so that the two square blocks 594 will move to the middle position along the connecting slide rod 591, thereby compressing the tension spring 592. At this time, under the elastic force of the tension spring 592, the two square blocks 594 will form a certain force on both sides, thereby ensuring that the grinding belt 53 will maintain a relatively close fit with the pressure vessel body 3. At the same time, the greater the distance between the grinding belt 53 and the pressure vessel body 3, the smaller the contact area between the grinding belt 53 and the pressure vessel body 3 will be. Under the action of the tension spring 592, the grinding belt 53 can always be kept relatively tight. state to achieve an adaptive adjustment effect. At the same time, the lifting support frame 4 is adjusted upward to make the grinding belt 53 separate from the pressure vessel body 3. By pressing the two driven wheels 54 toward the middle position, the distance between the two driven wheels 54 can be reduced. At this time, the grinding belt 53 can be removed and replaced to prevent the grinding belt 53 from being worn out after long-term use, thereby affecting the grinding effect. After replacing the new grinding belt 53, the driven wheel 54 is loosened. Under the action of the tension spring 592, the grinding belt 53 is in a taut state. At the same time, the grinding belt 53 will always be located in the surface grooves of the driven wheel 54 and the driving wheel 52 to prevent the grinding belt 53 from falling off during rotation, thereby achieving a better grinding effect.

[0032] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding seam grinding device for a pressure vessel, comprising a bottom plate (1) and a pressure vessel body (3) whose welding seam needs to be ground, characterized in that: The bottom plate (1) is provided with a fixing mechanism (2) for fixing the pressure vessel body (3), and one side of the fixing mechanism (2) is provided with a grinding mechanism (5) for grinding the weld on the pressure vessel body (3), and a lifting support frame (4) connected to the grinding mechanism (5) and capable of lifting and lowering; The fixing mechanism (2) comprises a fixing shell (21) fixed to both sides of the bottom plate (1), the fixing shell (21) is provided with a positioning groove for placing the pressure container body (3), two L-shaped connecting plates (29) are movably arranged in the fixing shell (21) and are distributed in upper and lower positions, and the two L-shaped connecting plates (29) are fixedly connected to the upper and lower opposite sides thereof, a gear (202) is meshed between the two gear plates (201), and the gear (202) is mounted on the inner wall of the fixing shell (21) through a bearing seat, A motor (24) for driving the gear (202) to rotate is fixedly mounted on the fixed shell (21), and the gears (202) in the two fixed shells (21) are connected by a connecting shaft (27). A clamping plate (22) for clamping the pressure vessel body (3) is provided on the L-shaped connecting plate (29). A through groove (203) for the L-shaped connecting plate (29) to move toward the outside is provided on both sides of the fixed shell (21), and a stabilizing component (28) for stabilizing the L-shaped connecting plate (29) is provided in the through groove (203).

2. The automatic welding seam grinding device for pressure vessels according to claim 1 is characterized in that: The stabilizing component (28) comprises a stabilizing plate (282) rotatably connected to the bottom of the side wall of the through slot (203), a thread groove (283) is provided on the stabilizing plate (282), and a bolt (281) used in conjunction with the thread groove (283) is provided on the fixing shell (21).

3. The automatic welding seam grinding device for pressure vessels according to claim 1 is characterized in that: The shape of the positioning groove matches the outer shape of the pressure vessel body (3); the radius of the clamping plate (22) is larger than the outer diameter of the pressure vessel body (3); and a plurality of rubber pads (23) are provided on the clamping plate (22).

4. The automatic welding seam grinding device for pressure vessels according to claim 1 is characterized in that: A limiting plate (25) is arranged on the L-shaped connecting plate (29), and a limiting groove (26) used in conjunction with the limiting plate (25) is provided on the fixed shell (21).

5. The automatic welding seam grinding device for pressure vessels according to claim 1 is characterized in that: The grinding mechanism (5) comprises a connecting shell (51) fixed on the lifting support frame (4), a driving wheel (52) being rotatably connected to the connecting shell (51), a connecting plate (56) being fixedly connected to the top of the inner wall of the connecting shell (51), and a second motor (57) for driving the driving wheel (52) to rotate is installed on the connecting plate (56), two rotatable rotating plates (58) are hinged on the connecting plate (56), and the other end of each rotating plate (58) is installed with a driven wheel (54), the two driven wheels (54) and the driving wheel (52) are connected to each other through a grinding belt (53), and an adjusting component (59) for adaptively adjusting the distance between the two driven wheels (54) according to the shape of the pressure vessel body (3) is arranged inside the connecting shell (51).

6. The automatic welding seam grinding device for pressure vessels according to claim 5 is characterized in that: The adjusting component (59) comprises a second through slot (501) provided on the rotating plate (58), and a connecting slide rod (591) penetrating the second through slot (501) and fixed on both sides of the inner wall of the connecting shell (51); the connecting slide rod (591) is slidably connected with a square block (594) arranged inside the second through slot (501); a tension spring (592) is sleeved on the connecting slide rod (591), and two ends of the tension spring (592) are respectively fixed on opposite sides of the two square blocks (594); a slide groove (593) connected to the second through slot (501) is provided on the rotating plate (58); and a slider (595) sliding in the slide groove (593) is fixedly connected to one side of the square block (594).

7. The automatic welding seam grinding device for pressure vessels according to claim 5 is characterized in that: The driving wheel (52) and the driven wheel (54) are both provided with a plurality of anti-skid pads (55) used in conjunction with the grinding belt (53).

8. The automatic welding seam grinding device for pressure vessels according to claim 5 is characterized in that: The bottom of the connecting shell (51) is open, and the length of the opening is adapted to the rotation amplitude of the rotating plate (58).

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