A steel pipe outer surface polishing device

Abstract

The application discloses to the technical field of steel pipe outer circle polishing, in particular to a steel pipe outer surface polishing device, which comprises a single machine table, a transmission assembly, a control assembly and a standby mechanism, the upper end of the single machine table is horizontally provided with two horizontal sliding rails, a polishing control seat is horizontally slidably arranged above the two horizontal sliding rails, and an adjusting cylinder is horizontally arranged at the upper end of the single machine table. The polishing control seat can be horizontally adjusted on the single machine table, so that polishing operation of different steel pipe sizes can be adapted. Then, the standby assembly can be controlled in cooperation with the polishing control seat, so that the processing thousand-leaf wheel can be timely replaced without stopping and manual operation, and the processing quality can be ensured. When the operation is replaced, the efficiency of switching or replacing the processing thousand-leaf wheel can be realized through cooperation of the connecting assembly and the control assembly, and the operation is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel pipe outer circle polishing, in particular to a steel pipe outer surface polishing device. BACKGROUND

[0002] Steel pipe outer surface polishing is a process for improving the surface finish, flatness, glossiness and other properties, improving the appearance quality, use performance or subsequent processing adaptability of the object. In steel pipe polishing processing, single or combined polishing processing of grinding wheel, abrasive belt and thousand leaf wheel is mainly used.

[0003] The existing utility model with publication number CN207824551U relates to a steel pipe outer circle polishing device, which comprises a rack and a driving motor. The right end of the rack is fixed with a transition mechanism in the middle. The top of the rack is provided with a bottom plate. A horizontal plate is fixed horizontally on the bottom plate. A bevel gear set, a motor set and a bevel gear I are sequentially arranged on the horizontal plate from left to right. The motor set comprises two three-phase asynchronous motors arranged side by side. A thousand leaf wheel is installed on the output shaft of the three-phase asynchronous motor. A baffle is fixed on the front end of the bottom plate. A water pipe is fixed on the inner side of the baffle. A support mechanism I is arranged between the water pipe and the bevel gear set. A support mechanism II is arranged between the water pipe and the motor set. The support mechanism II is in transmission connection with the transition mechanism. The above-mentioned scheme can realize adaptive operation of steel pipe polishing by using the thousand leaf wheel. When the thousand leaf wheel is in use, the thousand leaf wheel and the motor need to be transmission connected by a transmission shaft and a transmission belt. The motor drives the thousand leaf wheel to complete the high-speed rotation of the grinding and polishing operation. However, since the polishing quality depends on the state of the abrasive on the thousand leaf wheel during the polishing operation, the thousand leaf wheel needs to be replaced regularly after a long time of use. Since the steel pipe moves continuously during the grinding and polishing, it sequentially contacts multiple thousand leaf wheel polishing stations during the movement. The wear of the thousand leaf wheel at the steel pipe feeding end is relatively greater than that at the rear end. In order to reduce costs, all the thousand leaf wheels are not replaced uniformly. Therefore, when a single or part of the thousand leaf wheels is replaced, the machine needs to be stopped, which greatly affects the quality of the steel pipe polishing and is inconvenient to use. SUMMARY

[0004] The present application aims to provide a steel pipe outer surface polishing device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a steel pipe outer surface polishing device relates to the technical field of steel pipe outer circle polishing, in particular to a steel pipe outer surface polishing device, which comprises:

[0006] A single machine table is horizontally provided with two horizontal sliding rails at the upper end. A polishing control seat is horizontally and slidingly arranged above the two horizontal sliding rails. An adjusting cylinder is horizontally provided at the upper end of the single machine table. One side of the adjusting cylinder is connected with the polishing control seat. A transmission cylinder is arranged at the side of the polishing control seat away from the adjusting cylinder.

[0007] The transmission assembly includes a polishing rotating shaft and a belt drive shaft. A transmission control cavity is sequentially opened inside the transmission cylinder. The polishing rotating shaft and the belt drive shaft are horizontally rotatably inserted into both sides of the transmission control cavity. One side of the polishing rotating shaft and the belt drive shaft are connected together. A processing flap wheel is provided on the side of the polishing rotating shaft located outside the transmission cylinder through a connecting assembly. The connecting assembly includes a prismatic connecting rod, a polishing rotating shaft, a push block, and several constraint blocks.

[0008] A control assembly is located within a transmission control cavity. The control assembly includes a control sleeve and several control piston rods. The control sleeve is fitted onto a polishing rotating shaft located on one side within the transmission control cavity.

[0009] Backup mechanism

[0010] This device can adapt to polishing operations of different steel pipe sizes by adjusting the horizontal sliding of the polishing control seat on a single machine. Then, by controlling the movement of the polishing control seat in conjunction with the spare components, the processing impeller can be replaced in time without manual operation after machine stoppage, which can ensure processing quality. During the replacement operation, the cooperation of the connecting components and the control components can realize the efficiency of switching or replacing the processing impeller, making the operation more worry-free and convenient.

[0011] The backup mechanism is located on the side of the single machine tool near the processing flap wheel, and the backup mechanism includes a backup box and a positioning plate.

[0012] Preferably, a receiving groove is provided at the center of one side of the transmission cylinder, and a telescopic groove is provided between the receiving groove and the transmission control cavity. Several supporting rings are embedded in the telescopic groove on one side of the transmission control cavity. Several supporting balls are movably provided on the inner circumference of the several supporting rings. An elastic sealing ring is embedded in the telescopic groove on one side of the receiving groove. The polishing rotating shaft moves horizontally through the telescopic groove, and the inner circumference of the elastic sealing ring is in contact with the outer circumference of the polishing rotating shaft. The supporting balls of the several supporting rings are in contact with the outer circumference of the polishing rotating shaft.

[0013] Preferably, the belt drive shaft passes through the bearing process transmission cylinder at the center of one end away from the receiving groove, a transmission pulley is sleeved on one side of the belt drive shaft process transmission cylinder, a prismatic transmission rod is provided at one end of the belt drive shaft located in the transmission control cavity, a prismatic transmission groove is opened at the center of one side of the polishing rotating shaft located in the transmission control cavity, and one end of the prismatic transmission rod is inserted into the prismatic transmission groove.

[0014] Preferably, the polishing rotating shaft has a side baffle at one end located in the receiving groove. The center of one end of the side baffle extends out of the receiving groove and is provided with a prismatic connecting rod. The center of the processing flap wheel is provided with a metal sleeve, which is fitted with the prismatic connecting rod. The cross-sectional area of ​​the prismatic connecting rod is smaller than that of the side baffle. One side of the metal sleeve is in contact with the side baffle, and a ring magnet is embedded on the side of the side baffle near the metal sleeve.

[0015] Preferably, the end of the prismatic connecting rod away from the side baffle is provided with a prismatic groove, and a plurality of grooves are provided in the prismatic groove on the side away from the side baffle. A rotating shaft is provided horizontally in each groove. A connecting ear is provided on one side of the constraint block. The connecting ear of the constraint block is movably sleeved with the rotating shaft. When the constraint block is rotated to a vertical position by the rotating shaft, one side of the constraint block contacts the side of the metal sleeve away from the side baffle.

[0016] Preferably, the push block is movably inserted into the prismatic groove, and a plurality of push blocks are provided on the side of the push block away from the side baffle. Each push block has a horizontal push pin on one side. Each constraint block has a through slot on the side away from the metal sleeve, and the constraint block is sleeved with the push pin through the slot.

[0017] Preferably, the polishing rotating shaft has a stepped groove on one side of the transmission control cavity. The control sleeve is sleeved on the side of the polishing rotating shaft with the stepped groove through two sealed bearings. A piston groove is opened on the side of the polishing rotating shaft near the push block. A constraint piston rod is provided at the center of one side of the push block. One end of the constraint piston rod is movably inserted into the piston groove and is provided with a return spring. Several transfer air grooves are opened in the stepped groove and connected to the piston groove.

[0018] Preferably, a three-way connector is provided on one side of the control sleeve, and a one-way valve is inserted into one side of the three-way connector. A control ring is provided on the outer periphery of the control sleeve, and several movable guide rods are horizontally arranged in the transmission control cavity. Several movable guide rods are movably sleeved on the control ring.

[0019] Preferably, the control ring has several control piston rods horizontally symmetrically arranged on both sides, and the control piston rods are staggered with the movable guide rod. An extended piston tube is horizontally arranged on the side of the transmission control cavity near the control piston rod. Annular flow dividers are opened on both sides of the transmission cylinder. The several extended piston tubes on both sides of the transmission control cavity are respectively connected to the two annular flow dividers. The several control piston rods on both sides of the control ring are respectively inserted into the several extended piston tubes on both sides of the transmission control cavity, and an air receiving groove is provided through the transmission cylinder on one side of the annular flow divider.

[0020] Preferably, the spare box is provided with a storage slot, and a spare flap wheel is provided in the storage slot. The spare flap wheel is on the same horizontal plane as the polishing rotation shaft. A positioning plate is provided on the side of the spare box away from the polishing control seat. A C-shaped magnet is provided on one side of the positioning plate near the spare flap wheel. One side of the C-shaped magnet is in contact with the metal sleeve of the spare flap wheel. A clearance window is provided through the side of the spare box near the polishing control seat, and the height of the clearance window is greater than the diameter of the transmission cylinder.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This device can adapt to polishing operations of different steel pipe sizes by adjusting the horizontal sliding of the polishing control seat on a single machine. Then, by controlling the movement of the polishing control seat in conjunction with the spare components, the processing impeller can be replaced in time without manual operation after machine stoppage, which can ensure processing quality. During the replacement operation, the cooperation of the connecting components and the control components can realize the efficiency of switching or replacing the processing impeller, making the operation more worry-free and convenient. Attached Figure Description

[0023] Figure 1 This is a first-view schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0025] Figure 3 This is a second-view schematic diagram of the structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of part B;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of part C;

[0029] Figure 7 For the present invention Figure 4 Schematic diagram of part D;

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of part E;

[0031] Figure 9 For the present invention Figure 4 Schematic diagram of part F;

[0032] Figure 10 For the present invention Figure 4 Schematic diagram of part G;

[0033] Figure 11 This is an exploded view of the connection between the polishing rotating shaft and the belt drive shaft of the present invention;

[0034] Figure 12 This is an exploded view of the prism-shaped connecting rod and the push block of the present invention.

[0035] Figure 13 This is a schematic diagram of the support collar configuration of the present invention;

[0036] Figure 14 For the present invention Figure 13 Schematic diagram of part H;

[0037] Figure 15 This is a schematic diagram of the spare box configuration of the present invention.

[0038] In the diagram: 1. Single machine base; 2. Horizontal slide rail; 3. Polishing control seat; 4. Adjusting cylinder; 5. Transmission cylinder; 6. Storage slot; 7. Transmission control cavity; 8. Polishing rotating shaft; 9. Belt drive shaft; 10. Prism-shaped transmission rod; 11. Prism-shaped transmission groove; 12. Support collar; 13. Support ball; 14. Elastic sealing ring; 15. Side baffle; 16. Prism-shaped connecting rod; 17. Processing flap wheel; 18. Metal sleeve; 19. Prism-shaped groove; 20. Push block; 21. Rotating shaft; 22. Constraint block. 22. Strip groove; 23. Push pin rod; 24. Piston groove; 25. Constraint piston rod; 26. Return spring; 27. Control sleeve; 28. Step groove; 29. ​​Adapter air groove; 30. T-joint; 31. One-way valve; 32. Control ring; 33. Movable guide rod; 34. Control piston rod; 35. Extension piston tube; 36. Annular diversion groove; 37. Spare box; 38. Positioning plate; 39. Annular magnet; 40. Clearance window; 41. Spare flap wheel; 42. C-shaped magnet; 43. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see the appendix Figures 1-15 This application provides the following technical solutions.

[0041] Example 1: A steel pipe outer surface polishing device includes a single machine base 1. Two horizontal slide rails 2 are horizontally arranged at the upper end of the single machine base 1. A polishing control seat 3 is horizontally slidably arranged above the two horizontal slide rails 2. An adjusting cylinder 4 is horizontally arranged at the upper end of the single machine base 1. One side of the adjusting cylinder 4 is connected to the polishing control seat 3, and a transmission cylinder 5 is arranged on the side of the polishing control seat 3 away from the adjusting cylinder 4. The adjusting cylinder 4 can be controlled by telescopic movement to make the polishing control seat 3 move horizontally above the single machine base 1 through the horizontal slide rails 2 to adapt to the processing of steel pipes of different diameters. A drive motor is arranged at the upper end of the polishing control seat 3.

[0042] A transmission assembly is set up to provide rotary transmission for polishing. The transmission assembly includes a polishing rotating shaft 8 and a belt drive shaft 9. A transmission control cavity 7 is sequentially opened inside the transmission cylinder 5. The polishing rotating shaft 8 and the belt drive shaft 9 are horizontally rotatably inserted into the two sides of the transmission control cavity 7, respectively. One side of the polishing rotating shaft 8 and the belt drive shaft 9 are connected. On the side of the polishing rotating shaft 8 outside the transmission cylinder 5, a processing flap wheel 17 is provided through a connecting assembly. The connecting assembly includes a prismatic connecting rod 16, the polishing rotating shaft 8, a push block 20, and several constraint blocks 22. A receiving groove 6 is opened at the center of one side of the transmission cylinder 5. A telescopic groove is opened between the receiving groove 6 and the transmission control cavity 7. Several support collars 12 are embedded in the telescopic groove on one side of the transmission control cavity 7. Several support balls 13 are movably provided on the inner circumference of the support collars 12. An elastic sealing ring 14 is embedded in the telescopic groove on one side of the receiving groove 6. The polishing rotating shaft 8 moves horizontally through the telescopic groove, and the elastic sealing ring... The inner circumference of 14 contacts the outer circumference of the polishing rotating shaft 8. The supporting balls 13 of several supporting collars 12 respectively contact the outer circumference of the polishing rotating shaft 8. The belt drive shaft 9 passes through the center of the end of the transmission cylinder 5 away from the receiving groove 6 via the bearing. A transmission pulley is sleeved on one side of the transmission cylinder 5 of the belt drive shaft 9. A prismatic transmission rod 10 is provided at one end of the belt drive shaft 9 located in the transmission control cavity 7. A prismatic transmission groove 11 is opened at the center of one side of the polishing rotating shaft 8 located in the transmission control cavity 7, and one end of the prismatic transmission rod 10 is inserted into the prismatic transmission groove 11. The polishing rotating shaft 8 can move horizontally and rotate within the telescopic groove of the transmission cylinder 5 via several supporting collars 12. The elastic sealing ring 14 can prevent external polishing dust from entering the transmission control cavity 7. When the drive motor drives the transmission pulley connected to the belt drive shaft 9 to rotate via the belt, the belt drive shaft 9 can control the polishing rotating shaft 8 to rotate synchronously via the prismatic transmission rod 10.

[0043] A side baffle 15 is provided at one end of the polishing rotating shaft 8 located in the receiving groove 6. The center of one end of the side baffle 15 extends out of the receiving groove 6 and is provided with a prismatic connecting rod 16. A metal sleeve 18 is provided at the center of the processing flap wheel 17. The metal sleeve 18 is fitted with the prismatic connecting rod 16. The cross-sectional area of ​​the prismatic connecting rod 16 is smaller than that of the side baffle 15. One side of the metal sleeve 18 is in contact with the side baffle 15, and a ring magnet 40 is embedded on the side of the side baffle 15 near the metal sleeve 18. A prismatic groove 19 is opened at the end of the prismatic connecting rod 16 away from the side baffle 15. A few prismatic grooves are opened on the side of the prismatic groove 19 away from the side baffle 15. The dry groove has a horizontally mounted rotating shaft 21 inside. One side of the constraint block 22 has a connecting ear, which is movably sleeved on the rotating shaft 21. When the constraint block 22 rotates to a vertical position through the rotating shaft 21, one side of the constraint block 22 contacts the side of the metal sleeve 18 away from the side baffle 15. When the processing flap wheel 17 is sleeved on the prismatic connecting rod 16 of the polishing rotating shaft 8 through the metal sleeve 18, it can be basically positioned and held by the ring magnet 40. The prismatic structure of the prismatic connecting rod 16 can drive the processing flap wheel 17 to rotate synchronously when the polishing rotating shaft 8 rotates.

[0044] The push block 20 is movably inserted into the prismatic groove 19. Several pushing blocks are provided on the side of the push block 20 away from the side baffle 15. Each pushing block has a horizontally positioned pushing pin 24 on one side. The constraint block 22 has a through-cut strip groove 23 on the side away from the metal sleeve 18. The constraint block 22 is sleeved with the pushing pin 24 through the strip groove 23. When the push block 20 moves horizontally in the prismatic groove 19, the constraint block 22 can rotate as the push block 20 moves horizontally. After the processing flap wheel 17 is simply connected and positioned with the annular magnet 40 through the metal sleeve 18, the constraint block 22 can abut and constrain the other side of the metal sleeve 18 to prevent the processing flap wheel 17 from detaching from the prismatic connecting rod 16 under high-speed rotation. Conversely, when the push block 20 is further retracted into the prismatic groove 19, the constraint block 22 is in an inclined state, and the metal sleeve 18 can detach from the prismatic connecting rod 16.

[0045] A control assembly is set up to control the horizontal movement of the polishing rotating shaft 8. The control assembly is located in the transmission control cavity 7 and includes a control sleeve 28 and several control piston rods 35. The control sleeve 28 is fitted onto one side of the polishing rotating shaft 8 located in the transmission control cavity 7. A stepped groove 29 is opened on the side of the polishing rotating shaft 8 located in the transmission control cavity 7. The control sleeve 28 is fitted onto the side of the polishing rotating shaft 8 with the stepped groove 29 through two sealed bearings. A piston groove 25 is opened on the side of the polishing rotating shaft 8 near the push block 20. A constraint piston rod 26 is located at the center of one side of the push block 20. One end of the constraint piston rod 26 is movably inserted into the piston groove 25 and is equipped with a return spring 27. Several transition air grooves 30 are opened in the stepped groove 29 and connected to the piston groove 25. A three-way connector 31 is provided on one side of the control sleeve 28 and connected to the stepped groove 29. One-way valve 32 is inserted into one side of the connector 1. Control ring 33 is provided on the outer periphery of control sleeve 28. Several movable guide rods 34 are horizontally provided in transmission control cavity 7. Several movable guide rods 34 are movably sleeved in control ring 33. When high pressure gas is connected to the three-way connector 31, the high pressure gas will enter the piston groove 25 through the stepped groove 29 and the transfer gas groove 30, controlling the push of push block 20. Then, push block 20 pushes and flips constraint block 22 by pushing pin 24 to realize the connection constraint of metal sleeve 18. When gas is stopped from being supplied to the three-way connector 31, the reset spring 27 provided in piston groove 25 can drive constraint piston rod 26 and push block 20 to reset. At this time, constraint block 22 tilts, metal sleeve 18 and processing flap wheel 17 can be separated from prism connecting rod 16. The high pressure pipeline connected to the three-way connector 31 is sealed through transmission cylinder 5.

[0046] In addition, when the constraint block 22 can no longer rotate and the high-pressure airflow introduced through the three-way connector 31 continues to intensify, the high-pressure airflow is discharged from the one-way valve 32. The high-speed airflow cools the environment inside the transmission control chamber 7, preventing overheating caused by the long-term high-speed rotation of the polishing rotating shaft 8 and the belt drive shaft 9. Then, the high-pressure airflow blows the elastic sealing ring 14 from the telescopic groove, causing it to deform elastically and enter the receiving groove 6. Afterward, a pressurized jet is blown into the gap between the receiving groove 6 and the side baffle 15, blowing towards several polishing blades of the processing flap wheel 17 to clean the dust adhering to the blades and improve the quality of continuous polishing operations.

[0047] Several control piston rods 35 are horizontally symmetrically arranged on both sides of the control ring 33. The control piston rods 35 are staggered with the movable guide rod 34. An extended piston tube 36 is horizontally arranged on the side of the transmission control cavity 7 near the control piston rod 35. Annular flow dividers 37 are opened on both sides of the transmission cylinder 5. The extended piston tubes 36 on both sides of the transmission control cavity 7 are respectively connected to the two annular flow dividers 37. The control piston rods 35 on both sides of the control ring 33 are respectively inserted into the extended piston tubes 36 on both sides of the transmission control cavity 7. An air receiving groove is provided through the transmission cylinder 5 on one side of the annular flow divider 37. By exchanging air through the two annular flow dividers 37, the control piston rods 35 can push the control sleeve 28 to move horizontally in the transmission control cavity 7. When the control sleeve 28 moves horizontally along the movable guide rod 34 in the transmission control cavity 7, due to the polishing rotating shaft 8... The control sleeve 28 is connected to the control sleeve 28 via a sealed bearing. At this time, the control sleeve 28 can drive the polishing rotating shaft 8 to slide horizontally in the telescopic groove. When the three-way connector 31 is not supplied with high-pressure airflow, it is generally in two states, such as non-processing state and when replacing the processing flap wheel 17. At this time, the processing flap wheel 17 is basically positioned by the attraction of the metal sleeve 18 and the ring magnet 40. When it is necessary to replace the processing flap wheel 17 that is in use, the control sleeve 28 drives the polishing rotating shaft 8 to move towards the belt drive shaft 9. At this time, the length of the receiving groove 6 is greater than the sum of the lengths of the prismatic connecting rod 16 and the inclined constraint block 22. When the polishing rotating shaft 8 drives the prismatic connecting rod 16 to retract into the receiving groove 6, the processing flap wheel 17 will detach from the prismatic connecting rod 16 under the restriction of the transmission cylinder 5, and then fall naturally, waiting for the replacement of the new processing flap wheel 17 and connecting it with the prismatic connecting rod 16.

[0048] Example 2: Based on Example 1, a backup mechanism is provided for timely replacement of the processing flap wheel 17 without stopping the machine when it is damaged, reducing the efficiency problems caused by polishing downtime. The backup mechanism is located on the side of the single machine 1 near the processing flap wheel 17. The backup mechanism includes a backup box 38 and a positioning plate 39. The backup box 38 has a storage slot, and the storage slot contains a backup flap wheel 42. The backup flap wheel 42 is on the same horizontal plane as the polishing rotating shaft 8. The positioning plate 39 is located on the side of the backup box 38 away from the polishing control seat 3. One side of the positioning plate 39 is close to the backup flap wheel 42 and has a C-shaped magnet 43. One side of the C-shaped magnet 43 is in contact with the metal sleeve 18 of the backup flap wheel 42. A clearance window 41 is opened through the side of the backup box 38 near the polishing control seat 3, and the height of the clearance window 41 is greater than the diameter of the transmission cylinder 5. When needed... When replacing the processing flap wheel 17, first retract the prismatic connecting rod 16 into the storage groove 6. Then, adjust the cylinder 4 to control the polishing control seat 3 and the transmission cylinder 5 to slide horizontally along the horizontal slide rail 2. When the prismatic connecting rod 16 is in the position of the spare flap wheel 42 in the spare box 38, the belt drive shaft 9 controls the polishing rotating shaft 8 to rotate slowly, and the control sleeve 28 controls the polishing rotating shaft 8 to slowly push out of the storage groove 6. At this time, the prismatic connecting rod 16 can be horizontally inserted into the metal sleeve 18. The push block 20 pushes the constraint block 22 to a vertical position and constrains the metal sleeve 18. Then, the polishing control seat 3 and the transmission cylinder 5 are reset by the adjusting cylinder 4, so that the replaced spare flap wheel 42 can directly participate in the operation. For the spare box 38 where the spare flap wheel 42 is not placed after use, it can be replenished after the operation is completed, and the damaged processing flap wheel 17 can be removed from the bottom of the machine tool.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel pipe outer surface polishing device, characterized in that, include: A single machine (1) is provided with two horizontal slide rails (2) at the upper end of the single machine (1), and a polishing control seat (3) is provided horizontally above the two horizontal slide rails (2). An adjustment cylinder (4) is provided horizontally at the upper end of the single machine (1). One side of the adjustment cylinder (4) is connected to the polishing control seat (3), and a transmission cylinder (5) is provided on the side of the polishing control seat (3) away from the adjustment cylinder (4). The transmission assembly includes a polishing rotating shaft (8) and a belt drive shaft (9). A transmission control cavity (7) is provided inside the transmission cylinder (5). The polishing rotating shaft (8) and the belt drive shaft (9) are horizontally rotatably inserted into both sides of the transmission control cavity (7). One side of the polishing rotating shaft (8) and the belt drive shaft (9) are connected. The side of the polishing rotating shaft (8) located outside the transmission cylinder (5) is provided with a processing flap wheel (17) through a connecting assembly. The connecting assembly includes a prismatic connecting rod (16), the polishing rotating shaft (8), a push block (20), and several constraint blocks (22). The control assembly is located in the transmission control cavity (7). The control assembly includes a control sleeve (28) and several control piston rods (35). The control sleeve (28) is sleeved on one side of the polishing rotating shaft (8) located in the transmission control cavity (7). A backup mechanism is provided on the side of a single machine (1) near the processing flap wheel (17), and the backup mechanism includes a backup box (38) and a positioning plate (39). A storage groove (6) is provided at the center of one side of the transmission cylinder (5). A telescopic groove is provided between the storage groove (6) and the transmission control cavity (7). Several support rings (12) are embedded in the telescopic groove on one side of the transmission control cavity (7). Several support balls (13) are movably provided on the inner circumference of the several support rings (12). An elastic sealing ring (14) is embedded in the telescopic groove on one side of the storage groove (6). The polishing rotating shaft (8) moves horizontally through the telescopic groove. The inner circumference of the elastic sealing ring (14) is in contact with the outer circumference of the polishing rotating shaft (8). The support balls (13) of the several support rings (12) are in contact with the outer circumference of the polishing rotating shaft (8). The belt drive shaft (9) is connected to the center of the end of the transmission cylinder (5) away from the storage groove (6) through the bearing. A transmission pulley is sleeved on the side of the belt drive shaft (9) that is connected to the transmission cylinder (5). A prismatic transmission rod (10) is provided at one end of the belt drive shaft (9) located in the transmission control cavity (7). A prismatic transmission groove (11) is opened at the center of one side of the polishing rotating shaft (8) located in the transmission control cavity (7), and one end of the prismatic transmission rod (10) is inserted into the prismatic transmission groove (11). The control sleeve (28) is connected to the stepped groove (29) on one side and is provided with a three-way connector (31). A one-way valve (32) is inserted into one side of the three-way connector (31). A control ring (33) is provided on the outer periphery of the control sleeve (28). Several movable guide rods (34) are horizontally provided in the transmission control cavity (7). Several movable guide rods (34) are movably sleeved on the control ring (33). The control ring (33) is symmetrically provided with several control piston rods (35) on both sides. The control piston rods (35) are staggered with the movable guide rod (34). The transmission control cavity (7) is provided with an extension piston tube (36) on the side near the control piston rod (35). The transmission cylinder (5) is provided with annular flow dividers (37) on both sides. The extension piston tubes (36) on both sides of the transmission control cavity (7) are connected to the two annular flow dividers (37) respectively. The control piston rods (35) on both sides of the control ring (33) are inserted into the extension piston tubes (36) on both sides of the transmission control cavity (7). The annular flow dividers (37) are provided with an air inlet groove through the transmission cylinder (5) on one side.

2. The steel pipe outer surface polishing device according to claim 1, characterized in that: The polishing rotating shaft (8) is provided with a side baffle (15) at one end inside the storage groove (6). The center of one end of the side baffle (15) extends out of the storage groove (6) and is provided with a prismatic connecting rod (16). The center of the processing flap wheel (17) is provided with a metal sleeve (18). The metal sleeve (18) is fitted with the prismatic connecting rod (16). The cross-sectional area of ​​the prismatic connecting rod (16) is smaller than the cross-sectional area of ​​the side baffle (15). One side of the metal sleeve (18) is in contact with the side baffle (15), and a ring magnet (40) is embedded on the side of the side baffle (15) near the metal sleeve (18).

3. The steel pipe outer surface polishing device according to claim 2, characterized in that: The prismatic connecting rod (16) has a prismatic groove (19) at one end away from the side baffle (15). Several grooves are provided on the side of the prismatic groove (19) away from the side baffle (15). A rotating shaft (21) is horizontally provided in each groove. A connecting ear is provided on one side of the constraint block (22). The connecting ear of the constraint block (22) is movably sleeved with the rotating shaft (21). When the constraint block (22) rotates to a vertical position through the rotating shaft (21), one side of the constraint block (22) contacts the side of the metal sleeve (18) away from the side baffle (15).

4. The steel pipe outer surface polishing device according to claim 3, characterized in that: The push block (20) is movably inserted into the prismatic groove (19). On the side of the push block (20) away from the side baffle (15), there are several push blocks. On one side of each push block, there is a horizontal push pin (24). On the side of the constraint block (22) away from the metal sleeve (18), there is a through slot (23). The constraint block (22) is sleeved with the push pin (24) through the slot (23).

5. A steel pipe outer surface polishing device according to claim 4, characterized in that: The polishing rotating shaft (8) has a stepped groove (29) on one side inside the transmission control cavity (7). The control sleeve (28) is connected to the side of the polishing rotating shaft (8) with the stepped groove (29) through two sealed bearings. The polishing rotating shaft (8) has a piston groove (25) on the side near the push block (20). The center of one side of the push block (20) has a constraint piston rod (26). One end of the constraint piston rod (26) is movably inserted into the piston groove (25) and has a return spring (27). The stepped groove (29) is connected to the piston groove (25) and has several transfer air grooves (30).

6. The steel pipe outer surface polishing device according to claim 5, characterized in that: The spare box (38) is provided with a storage slot, and a spare flap wheel (42) is provided in the storage slot. The spare flap wheel (42) and the polishing rotating shaft (8) are on the same horizontal plane. A positioning plate (39) is provided on the side of the spare box (38) away from the polishing control seat (3). A C-shaped magnet (43) is provided on one side of the positioning plate (39) near the spare flap wheel (42). One side of the C-shaped magnet (43) is in contact with the metal sleeve (18) of the spare flap wheel (42). A clearance window (41) is provided through the side of the spare box (38) near the polishing control seat (3), and the height of the clearance window (41) is greater than the diameter of the transmission cylinder (5).

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