A grinding device for pressure vessel production

Abstract

The present invention discloses a grinding device for pressure vessel production, comprising a fixed base plate, a supporting side frame fixedly embedded and installed at the bottom end of the fixed base plate, a mounting slot provided at the top end of the fixed base plate, a supporting iron frame embedded and installed at the top end of the fixed base plate, a driving motor detachably mounted at the top end of the supporting iron frame, a driving shaft embedded and installed at the bottom end of the driving motor, and a fixed sleeve rotatably sleeved on the outer peripheral side of the driving shaft. The present invention arranges a fixed arc plate, a middle arc plate, a grinding pad and a driving shaft, and utilizes the mutual cooperation of the fixed top plate and the inner grinding pad thereof to perform a fitting rotation grinding work along the surface of the pressure vessel, thereby performing a fitting grinding operation on the pressure vessel, thereby more closely fitting the surface of the pressure vessel, and thus performing a large-area synchronous grinding of the surface.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding equipment, and more specifically, to a grinding device for pressure vessel production. Background Art

[0002] Pressure vessels are enclosed devices that contain gas or liquid and withstand a certain pressure. To more effectively implement scientific management and safety inspections, my country's "Regulations on Safety Supervision of Pressure Vessels" classify pressure vessels into three categories based on operating pressure, medium hazard, and their role in production. During the manufacturing process, pressure vessels produce metal burrs, which vary depending on the processing method. Burrs can be broadly categorized as follows: 1. Casting burrs: Excess material generated at the joints of the mold or at the root of the sprue. Burr size is generally measured in millimeters. 2. Forging burrs: Burrs generated at the joints of the metal mold due to plastic deformation of the forged material. Electric and gas welding burrs: Electric welding burrs are burrs where the filler material at the weld protrudes onto the surface of the part. Gas welding burrs are slag that escapes from the cut when the gas is cut. 3. Stamping burrs: Burrs generated during stamping due to gaps between the punch and the die, gaps between the cutting tools at the cut, and die wear. The shape of stamping burrs varies depending on the material of the plate, the thickness of the plate, the gap between the upper and lower dies, the shape of the stamped parts, etc. Grinding equipment is required in the process of deburring pressure vessels.

[0003] According to the prior art patent with application number: CN202122144650.1, it can be known that it provides a grinding device for pressure vessel production, including a grinding device base plate and a pressure vessel body, a placement block is provided above the grinding device base plate, and a placement groove is opened on the top side of the placement block, and the pressure vessel body is placed on the placement groove, and a fixed plate is fixedly installed on the top side of the grinding device base plate, and a motor is fixedly installed on one side of the fixed plate. The output shaft of the motor is fixedly installed with a rotating shaft through a coupling, and a rotating hole is opened on one side of the fixed plate.

[0004] However, there are still some shortcomings in its actual use. For example, when the current grinding equipment is grinding the pressure vessel, due to the irregular shape of the pressure vessel, the grinding equipment needs to repeatedly adjust the grinding position and angle to grind the pressure vessel. This operation process is too cumbersome and it is also impossible to effectively grind the surface of the pressure vessel uniformly, resulting in high limitations in the operation of the device.

[0005] On the other hand, when the grinding equipment is working, it will cause long-term low-frequency lateral vibration to the container surface, resulting in the grinding position easily slipping with the surface of the pressure vessel during the grinding process, making it difficult for the operator to stabilize the grinding equipment and perform the grinding work after positioning, thereby affecting the orderly progress of the grinding work efficiency.

[0006] Therefore, in view of this, the inventor, based on his many years of rich experience in design, development and actual production in the relevant industry, has researched and improved the existing structure and defects, and provided a polishing device for pressure vessel production, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0007] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a grinding device for pressure vessel production, which provides a fixed arc plate, a middle arc plate, a grinding pad and a drive shaft, and utilizes the mutual cooperation of the several members. Under the action of the fixed top plate, and through the inner grinding pad, a fitting rotation grinding work is performed along the surface of the pressure vessel, thereby performing a fitting grinding operation on it, so that it fits the surface of the pressure vessel more closely, thereby performing a large-area synchronous grinding on it, further improving its grinding efficiency while also increasing the effect of the grinding work. By setting a through By setting up arc-shaped strip grooves, fixed elastic annular rings, fixed top plates and arc-shaped cylinders, and utilizing their mutual cooperation, and utilizing the mutual adaptation of the shape of the arc-shaped cylinder and the shape of the arc-shaped strip groove, it is possible to ensure the stability of the middle arc plate when the fixed arc plate rotates, so that it can fit tightly to the surface of the pressure vessel for rotational grinding, thereby ensuring the fixation of the fixed arc plate and the semicircular bottom plate, avoiding the problem of equipment slipping during grinding, thereby effectively increasing the grinding effect of the device, and thus improving the stability of the device, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a polishing device for pressure vessel production, comprising a fixed base plate, a supporting side frame fixedly mounted on the bottom end of the fixed base plate, a mounting notch formed at the bottom end of the fixed base plate, a fixing opening formed at the top end of the fixed base plate, a supporting iron frame mounted on the top end of the fixed base plate, a driving motor detachably mounted on the top end of the supporting iron frame, a driving shaft mounted on the bottom end of the driving motor, and a fixed sleeve rotatably sleeved on the outer circumference of the driving shaft;

[0009] The surface of the fixed sleeve is provided with an adapting circular hole, the outer peripheral side of the bottom end of the drive shaft is fixedly sleeved with a first fixed top plate, the interior of the first fixed top plate is connected to a support frame, and the interior of the first fixed top plate is provided with a circular turning opening;

[0010] A pressure vessel is placed in the top fixing port of the fixed bottom plate, a fixed arc plate is fixedly installed on the bottom end of the first fixed top plate, a connecting plate is inlaid on the side of the fixed arc plate, and connecting blocks are inlaid on the left and right sides of the bottom end of the fixed arc plate, and a fixed circular hole is opened on the surface of the connecting block.

[0011] In a preferred embodiment, a fixed rotating shaft is rotatably connected inside the fixed circular hole, connecting rotating blocks are fixedly rotatably provided on both the left and right sides of the fixed rotating shaft, and a fixed rotating opening is provided inside the connecting rotating block.

[0012] In a preferred embodiment, limiting discs are embedded on both the left and right sides of the fixed rotating shaft, and the diameter of the limiting discs is greater than the diameter of the fixed rotating shaft.

[0013] In a preferred embodiment, the bottom end of the connecting rotary block is rotatably sleeved with a middle arc plate through a fixed rotating shaft, and a connecting piece is embedded in the top end of the middle arc plate. An arc-shaped strip groove is provided on the side of the middle arc plate. The inner wall surface of the arc-shaped strip groove is smooth, and the cross-sectional shape of the arc-shaped strip groove is semicircular. An embedding notch is provided inside the connecting piece, and the shape of the embedding notch is adapted to the shape of the fixed rotating shaft. The material of the connecting rotary block is an alloy material, and the side of the connecting rotary block is in contact with the side of the connecting block.

[0014] In a preferred embodiment, a grinding pad is fixedly attached to the inner side of the connecting plate and the middle arc plate, and the surface of the grinding pad is set to a rough surface. First fixed cylinders are embedded and installed at the left and right ends of the bottom end of the middle arc plate. There are two first fixed cylinders, and the bottom ends of the two first fixed cylinders are embedded and connected to the interior of the connecting base plate.

[0015] In a preferred embodiment, the bottom end of the middle arc-shaped plate is located on the outside of the first fixed cylinder and is embedded with a buffer spring, the bottom end of the first fixed cylinder is embedded with a connecting bottom plate, and the bottom end of the connecting bottom plate is embedded with a semicircular bottom end plate, and the shape of the semicircular bottom end plate is adapted to the shape of the peripheral side surface of the pressure vessel.

[0016] In a preferred embodiment, a fixed bottom end frame is embedded in the top of the fixed bottom plate, a second fixed cylinder is embedded in the top of the fixed bottom end frame, a second fixed top plate is embedded in the top of the second fixed cylinder, and an arc-shaped cylinder is embedded in the interior of the second fixed top plate. The shape of the arc-shaped cylinder is adapted to the shape of the arc-shaped strip groove, and the length of the arc-shaped cylinder ranges from fifteen centimeters to thirty-five centimeters.

[0017] In a preferred embodiment, a fixed elastic annular ring is embedded in the inner part of the side arc-shaped strip groove of the middle arc-shaped plate, and a rubber pad is embedded and sleeved on one side of the second fixed cylinder, and the inner wall side of the rubber pad is set to a smooth surface structure.

[0018] In a preferred embodiment, the fixed sleeve is detachably mounted on the bottom end of the drive motor, the bottom end of the support iron frame extends to the inside of the fixed base plate, the outer peripheral side of the drive shaft is evenly coated with a layer of lubricating grease paint, and the drive shaft is made of alloy material as a whole.

[0019] The technical effects and advantages of the present invention are as follows:

[0020] The present invention provides a fixed arc plate, a middle arc plate, a grinding pad and a driving shaft, and utilizes the mutual cooperation of the several members. Under the action of the first fixed top plate, and through the inner grinding pad, a fitting rotation grinding operation is performed along the surface of the pressure vessel, thereby performing a fitting grinding operation on it, so that it fits the surface of the pressure vessel more closely, thereby performing synchronous grinding on a large area, further improving its grinding efficiency and increasing the effect of the grinding work.

[0021] The present invention provides an arc-shaped strip groove, a fixed elastic annular ring, a second fixed top plate and an arc-shaped cylinder, and utilizes the mutual cooperation of the several components, and utilizes the mutual adaptation of the shape of the arc-shaped cylinder and the shape of the arc-shaped strip groove, so that when the fixed arc-shaped plate rotates, the stability of the middle arc-shaped plate is ensured, so that it is closely fitted to the surface of the pressure vessel for rotational grinding, thereby ensuring the fixation of the fixed arc-shaped plate and the semicircular bottom end plate, avoiding the problem of the equipment slipping during the grinding process, thereby effectively increasing the grinding effect of the device, and further improving the stability of the device;

[0022] The present invention provides a fixed arc plate, a middle arc plate, a fixed elastic annular ring, an arc strip groove, an arc cylinder and two groups of fixed top plates, and utilizes the mutual cooperation of these to effectively fit the surface of the pressure vessel and perform a grinding operation on it. At the same time, during the rotation process of the fixed arc plate and the middle arc plate, the stability of both can be ensured, and positional deviation during the sliding process can be avoided, thereby further improving the working effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional assembly structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional assembly structure of the fixed bottom end frame of the present invention;

[0026] Figure 4 This is a schematic structural diagram of the fixed arc plate and the middle arc plate of the present invention;

[0027] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A;

[0028] Figure 6 This is a schematic diagram of the overall three-dimensional assembly structure of the interrupted arc plate of the present invention;

[0029] Figure 7 It is a schematic diagram of the overall side three-dimensional structure of the present invention.

[0030] The accompanying drawings are marked as follows: 1. fixed bottom plate; 2. supporting side frame; 3. mounting notch; 4. fixing port; 5. supporting iron frame; 6. driving motor; 7. driving shaft; 8. fixing sleeve; 9. adapting circular hole; 10. first fixed top plate; 11. supporting frame; 12. circular rotating port; 13. pressure vessel; 14. fixed arc plate; 15. connecting plate; 16. connecting block; 17. fixed circular hole; 18. fixed rotating shaft; 19. connecting rotating block; 20 , fixed turntable; 21, limiting disc; 22, middle arc plate; 23, connecting piece; 24, arc strip groove; 25, grinding pad; 26, first fixed cylinder; 27, buffer spring; 28, connecting bottom plate; 29, semicircular bottom end plate; 30, fixed bottom end frame; 31, second fixed cylinder; 32, second fixed top plate; 33, arc cylinder; 34, fixed elastic annular ring; 35, rubber pad; 37, inlaid notch. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] As attached Figure 1 To the attached Figure 7 The polishing device for pressure vessel production shown in the figure includes a fixed base plate 1, a supporting side frame 2 fixedly mounted on the bottom end of the fixed base plate 1, a mounting notch 3 formed at the bottom end of the fixed base plate 1, a fixing opening 4 formed at the top end of the fixed base plate 1, a supporting iron frame 5 mounted on the top end of the fixed base plate 1, a drive motor 6 detachably mounted on the top end of the support iron frame 5, a drive shaft 7 mounted on the bottom end of the drive motor 6, and a fixed sleeve 8 rotatably sleeved on the outer circumference of the drive shaft 7;

[0033] The surface of the fixed sleeve 8 is provided with an adapting circular hole 9, and the outer peripheral side of the bottom end of the driving shaft 7 is fixedly sleeved with a first fixed top plate 10, the interior of the first fixed top plate 10 is connected to a support frame 11, and the interior of the first fixed top plate 10 is provided with a circular turning opening 12;

[0034] A pressure vessel 13 is placed in the fixing opening 4 at the top of the fixed bottom plate 1. A fixed curved plate 14 is fixedly mounted on the bottom end of the first fixed top plate 10. Connecting plates 15 are embedded in the sides of the fixed curved plate 14. Connecting blocks 16 are embedded on the left and right sides of the bottom end of the fixed curved plate 14. A fixing circular hole 17 is opened on the surface of the connecting block 16.

[0035] The interior of the fixed circular hole 17 is rotatably connected with a fixed rotating shaft 18, and a connecting rotating block 19 is fixedly rotatably provided on both sides of the fixed rotating shaft 18. A fixed rotating port 20 is provided inside the connecting rotating block 19, and a limiting disc 21 is inlaid and installed on both sides of the fixed rotating shaft 18. The diameter of the limiting disc 21 is greater than the diameter of the fixed rotating shaft 18. The bottom end of the connecting rotating block 19 is rotatably sleeved with a middle section arc plate 22 through the fixed rotating shaft 18, and a connecting piece 23 is inlaid and installed on the top of the middle section arc plate 22. The side of the middle section arc plate 22 is provided with an arc. The strip groove 24, the inner wall surface of the arc strip groove 24 is smooth, and the cross-section of the arc strip groove 24 is semicircular, the interior of the connecting piece 23 is provided with an inlay notch 37, the shape of the inlay notch 37 is adapted to the shape of the fixed shaft 18, the material of the connecting turn block 19 is an alloy material, the side of the connecting turn block 19 is in contact with the side of the connecting block 16, the inner side of the connecting plate 15 and the middle section of the arc plate 22 is fixedly pasted with a grinding pad 25, the surface of the grinding pad 25 is set to a rough surface, and the left and right sides of the bottom end of the middle section of the arc plate 22 are The first fixed cylinders 26 are embedded and installed at both ends. The number of the first fixed cylinders 26 is two. The bottom ends of the two first fixed cylinders 26 are embedded and connected with the inside of the connecting bottom plate 28. The bottom end of the middle section arc plate 22 is located on the outside of the first fixed cylinder 26 and is embedded with a buffer spring 27. The bottom end of the first fixed cylinder 26 is embedded and installed with a connecting bottom plate 28. The bottom end of the connecting bottom plate 28 is embedded and installed with a semicircular bottom end plate 29. The shape of the semicircular bottom end plate 29 is adapted to the shape of the peripheral side of the pressure vessel 13. The middle section arc plate 22 is A buffer spring 27 is embedded and connected to the bottom end and the outside of the first fixed cylinder 26. A connecting bottom plate 28 is embedded and installed at the bottom end of the first fixed cylinder 26. A semicircular bottom end plate 29 is embedded and installed at the bottom end of the connecting bottom plate 28. The shape of the semicircular bottom end plate 29 is adapted to the shape of the peripheral side surface of the pressure vessel 13. A fixed elastic annular ring 34 is embedded in the inside of the side arc-shaped strip groove 24 of the middle arc-shaped plate 22. A rubber pad 35 is embedded and sleeved on one side of the second fixed cylinder 31. The inner wall side surfaces of the rubber pad 35 are all set to smooth surface structures.

[0036] For details, please refer to the attached manual Figure 1 The top of the fixed base plate 1 is inlaid with a fixed bottom end frame 30, the top of the fixed bottom end frame 30 is inlaid with a second fixed cylinder 31, the top of the second fixed cylinder 31 is inlaid with a second fixed top plate 32, and the interior of the second fixed top plate 32 is embedded with an arc cylinder 33, the shape of the arc cylinder 33 is adapted to the shape of the arc-shaped strip groove 24, and the length of the arc cylinder 33 ranges from fifteen centimeters to thirty-five centimeters.

[0037] The specific implementation method is: the shape of the arc cylinder 33 is adapted to the shape of the arc strip groove 24, so that when the fixed arc plate 14 rotates, the stability of the middle arc plate 22 can be ensured, so that it can fit tightly to the surface of the pressure vessel 13 for rotational grinding, thereby ensuring the fixation of the fixed arc plate 14 and the semicircular bottom end plate 29, thereby effectively increasing the grinding effect of the device and further improving the use effect of the device.

[0038] For details, please refer to the attached manual Figure 1-6 The fixing sleeve 8 is detachably mounted on the bottom end of the driving motor 6, and the bottom end of the supporting iron frame 5 extends to the inside of the fixed base plate 1. The outer peripheral side of the driving shaft 7 is evenly coated with a layer of lubricating grease paint, and the driving shaft 7 is made of alloy material as a whole.

[0039] The specific implementation method is: a layer of lubricating grease is evenly coated on the outer peripheral side of the driving shaft 7, so that when it rotates relative to the driving shaft 7, the friction between the two is effectively reduced, and the wear rate is further slowed down, thereby extending its service life.

[0040] Working principle of the present invention:

[0041] Step 1: First, the operator assembles the various components of the device normally, and then starts the device normally.

[0042] Step 2: First, the operator turns on the drive motor 6, and then drives the drive shaft 7 to rotate inside the fixed sleeve 8, and then drives the first fixed top plate 10 to rotate through the drive shaft 7. Then, the connecting plate 15 at the bottom end of the first fixed top plate 10 and the middle arc plate 22, under the action of the first fixed top plate 10, and through its inner grinding pad 25, perform a fitting rotation grinding work along the surface of the pressure vessel 13, so as to perform a fitting grinding operation on it, so as to fit the surface of the pressure vessel 13 more closely, thereby performing a large-scale grinding operation on it. The synchronous grinding of the accumulated content further improves its grinding efficiency and increases the effect of the grinding work. At the same time, the shape of the arc cylinder 33 is adapted to the shape of the arc strip groove 24, so that when the fixed arc plate 14 rotates, the stability of the middle arc plate 22 is ensured, and it is tightly fitted to the surface of the pressure vessel 13 for rotational grinding, thereby ensuring the fixation of the fixed arc plate 14 and the semicircular bottom end plate 29, avoiding the problem of slipping of the equipment during grinding, thereby effectively increasing the grinding effect of the device and further improving the use effect of the device.

[0043] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aging and severely worn parts inside the device.

[0044] The above scheme, by setting the fixed arc plate 14, the middle arc plate 22 and the grinding pad 25 and the driving shaft 7, utilizes the mutual cooperation of several of them, under the action of the first fixed top plate 10, and through its inner grinding pad 25, performs a fitting rotation grinding work along the surface of the pressure vessel 13, thereby performing a fitting grinding operation on it, thereby more fitting the surface of the pressure vessel 13, thereby performing a large area of ​​synchronous grinding on it, further improving its grinding efficiency while also increasing the effect of the grinding work, by setting the arc strip groove 24, the fixed elastic ring The arc-shaped ring 34, the second fixed top plate 32 and the arc-shaped cylinder 33 cooperate with each other, and the shape of the arc-shaped cylinder 33 is adapted to the shape of the arc-shaped strip groove 24, so that when the fixed arc plate 14 rotates, the middle arc plate 22 can be ensured to be stable, so that it can fit tightly to the surface of the pressure vessel 13 for rotational grinding, thereby ensuring the fixation of the fixed arc plate 14 and the semicircular bottom end plate 29, avoiding the problem of slipping of the equipment during grinding, thereby effectively increasing the grinding effect of the device, and further improving the stability of the device.

[0045] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0046] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0047] Finally: 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, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A grinding device for pressure vessel production, comprising a fixed base plate (1), a supporting side frame (2) fixedly embedded in the bottom end of the fixed base plate (1), and a mounting notch (3) formed at the bottom end of the fixed base plate (1), characterized in that: The top of the fixed base plate (1) is provided with a fixing opening (4), the top of the fixed base plate (1) is inlaid with a supporting iron frame (5), the top of the supporting iron frame (5) is detachably mounted with a driving motor (6), the bottom of the driving motor (6) is inlaid with a driving shaft (7), and the outer peripheral side of the driving shaft (7) is rotatably sleeved with a fixing sleeve (8); An adapting circular hole (9) is provided on the surface of the fixed sleeve (8), a first fixed top plate (10) is fixedly sleeved on the outer peripheral side of the bottom end of the driving shaft (7), a support frame (11) is connected to the interior of the first fixed top plate (10), and a circular turning opening (12) is provided inside the first fixed top plate (10); A pressure vessel (13) is placed in the top fixing opening (4) of the fixed bottom plate (1), a fixed arc plate (14) is fixedly installed at the bottom end of the first fixed top plate (10), a connecting plate (15) is embedded and installed on the side of the fixed arc plate (14), and connecting blocks (16) are embedded and installed on the left and right sides of the bottom end of the fixed arc plate (14), and a fixing circular hole (17) is opened on the surface of the connecting block (16); The interior of the fixed circular hole (17) is rotatably connected to a fixed rotating shaft (18), and connecting rotating blocks (19) are fixedly rotatably provided on both the left and right sides of the fixed rotating shaft (18), and a fixed rotating opening (20) is provided inside the connecting rotating block (19); The left and right sides of the fixed rotating shaft (18) are both inlaid with a limiting disc (21), and the diameter of the limiting disc (21) is greater than the diameter of the fixed rotating shaft (18); The bottom end of the connecting rotating block (19) is rotatably sleeved with a middle arc plate (22) through a fixed rotating shaft (18), and a connecting piece (23) is embedded in the top end of the middle arc plate (22). The side of the middle arc plate (22) is provided with an arc strip groove (24), the inner wall surface of the arc strip groove (24) is smooth, and the cross-section of the arc strip groove (24) is semicircular. The interior of the connecting piece (23) is provided with an embedding notch (37), and the shape of the embedding notch (37) is adapted to the shape of the fixed rotating shaft (18). The material of the connecting rotating block (19) is an alloy material. The side of the connecting rotating block (19) is in contact with the side of the connecting block (16); A grinding pad (25) is fixedly attached to the inner side of the connecting plate (15) and the middle arc plate (22), and the surface of the grinding pad (25) is set to be a rough surface. First fixed cylinders (26) are embedded and installed at both left and right ends of the bottom end of the middle arc plate (22). The number of the first fixed cylinders (26) is two, and the bottom ends of the two first fixed cylinders (26) are embedded and connected with the inside of the connecting bottom plate (28); A buffer spring (27) is embedded and connected to the bottom end of the middle arc-shaped plate (22) and is located outside the first fixed cylinder (26). A connecting bottom plate (28) is embedded and installed at the bottom end of the first fixed cylinder (26). A semicircular bottom end plate (29) is embedded and installed at the bottom end of the connecting bottom plate (28). The shape of the semicircular bottom end plate (29) is adapted to the shape of the peripheral side surface of the pressure vessel (13).

2. A polishing device for pressure vessel production according to claim 1, characterized in that: The top of the fixed bottom plate (1) is inlaid with a fixed bottom frame (30), the top of the fixed bottom frame (30) is inlaid with a second fixed cylinder (31), the top of the second fixed cylinder (31) is inlaid with a second fixed top plate (32), and the interior of the second fixed top plate (32) is embedded with an arc cylinder (33), the shape of the arc cylinder (33) is adapted to the shape of the arc strip groove (24), and the length of the arc cylinder (33) ranges from fifteen centimeters to thirty-five centimeters.

3. A polishing device for pressure vessel production according to claim 2, characterized in that: A fixed elastic annular ring (34) is fitted and embedded in the side arc-shaped strip groove (24) of the middle arc-shaped plate (22), and a rubber pad (35) is embedded and sleeved on one side of the second fixed cylinder (31). The inner wall side of the rubber pad (35) is set to a smooth surface structure.

4. A polishing device for pressure vessel production according to claim 1, characterized in that: The fixing sleeve (8) is detachably mounted on the bottom end of the driving motor (6), the bottom end of the supporting iron frame (5) extends to the inside of the fixed base plate (1), the outer peripheral side of the driving shaft (7) is evenly coated with a layer of lubricating grease, and the driving shaft (7) is made of alloy material as a whole.

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