A grinding device for inner wall of steel pipe

Abstract

The present invention discloses a device for grinding the inner wall of a steel pipe in the field of steel pipe processing technology, comprising a base, a first fixed box and a second fixed box; the base is provided with a pipe material seat, a material moving assembly and a pipe jacking assembly, and is connected to a support roller and a pressure roller through a driving structure, a first lifting structure and a second lifting structure; the first fixed box is provided with a movable frame, a grinding assembly and a blowing assembly; the present invention adjusts the positions of the support roller and the pressure roller at the same time by setting a driving structure, a first lifting structure and a second lifting structure, so that the position of the steel pipe is centered and pressed and positioned, thereby improving the accuracy of the steel pipe position; the steel pipe is rotated by the pressure roller, and the grinding assembly moves along the inside of the steel pipe to grind the inner wall of the steel pipe, and the inner wall of the grinded steel pipe is sprayed and cleaned by the blowing assembly; the steel pipes at the three workstations of loading, grinding and unloading are transferred at the same time by the material moving assembly, so that the loading and unloading operations of the steel pipe grinding are faster and more convenient, thereby improving the processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe processing, in particular to a grinding device for the inner wall of a steel pipe. Background Art

[0002] Steel pipes are not only used as economical steel materials to manufacture building structure grids, pillars and mechanical supports, but can also be used to transport fluids and powdered solids, exchange heat energy, and manufacture mechanical parts and containers. During the production and processing of steel pipes used for transportation functions, their inner surfaces usually need to be polished and supplemented with other treatment processes to improve the surface quality of the steel pipes and enhance their anti-rust and anti-corrosion functions.

[0003] Patent publication number CN115609380A is a steel pipe inner wall grinding device, whose structure mainly includes a frame, a flip assembly and a grinding assembly, wherein the flip assembly includes a flip drive and several clamping parts for clamping the steel pipe, and the grinding assembly includes a support rod, a grinding drive and several friction strips; the steel pipe is clamped and rotated by the flip assembly, and the position of the support rod relative to the steel pipe is adjusted by the grinding drive in the grinding assembly, so that the inner wall of the steel pipe can be ground from coarse to fine.

[0004] However, when the above-mentioned grinding device is working, it can only grind the inner wall of the steel pipe, and grinding will produce a lot of waste, which is used to adhere to the inner wall of the steel pipe or accumulate in the steel pipe, which is inconvenient for subsequent processing and use. The length of the steel pipe is generally long, which is not convenient for manual cleaning, resulting in the steel pipe after grinding cannot be directly used for subsequent operations, affecting the overall processing efficiency of the steel pipe.

[0005] Based on this, the present invention designs a grinding device for the inner wall of a steel pipe to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for grinding the inner wall of a steel pipe to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A device for grinding the inner wall of a steel pipe comprises a base, wherein a first fixing box and a second fixing box are fixed to the left and right sides of the top surface of the base respectively;

[0009] A bottom plate is connected to the middle of the upper part of the base through a first lifting structure, and two parallel supporting rollers are symmetrically arranged and rotatably connected to the top surface of the bottom plate. A top plate is provided above the bottom plate, and two parallel pressing rollers are symmetrically and rotatably connected to the bottom of the top plate, and the end of one of the pressing rollers is connected to a motor, and the left and right ends of the top plate are respectively close to the first fixed box and the second fixed box, and the bottom is connected to the base through the second lifting structure. A cavity is provided inside the base, and a driving structure is provided in the cavity, and the bottom ends of the first lifting structure and the second lifting structure are both connected to the driving structure accordingly;

[0010] Two pipe material seats are symmetrically fixed on the rear side of the top surface of the base, and two pipe material seats are also fixed on the front side of the top surface. The bottom of the pipe material seat is provided with a groove. A jacking pipe assembly is provided between the two pipe material seats on the left side of the base, and a jacking pipe assembly is also provided between the two pipe material seats on the right side. Two material transfer assemblies are symmetrically provided on the left and right sides of the bottom plate on the top surface of the base, and the pipe material seats are located on the outside of the material transfer assemblies.

[0011] A limiting slide is provided on the left side of the first fixed box, and a pipe end groove is provided on the right side of the second fixed box. A movable frame is connected to the limiting slide in a sliding manner along the left and right directions. Both ends of the movable frame extend out of the first fixed box, and a grinding assembly and a blowing assembly are provided on the left side of the movable frame. The upper and lower sides corresponding to the movable frame in the first fixed box are rotatably connected to drive rollers, and the left and right sides of the drive roller are symmetrically arranged and rotatably connected to the limiting roller, and one end of the drive roller is connected to a motor.

[0012] Preferably, the grinding assembly includes an adjustment slot located at the left section of the movable frame and two adjustment plates symmetrically located on the upper and lower sides of the adjustment slot, a plurality of support blocks are evenly fixed on the outer side surface of the lower adjustment plate, and ball bearings are provided at the outer ends of the support blocks. Two symmetrical and coaxial grinding rollers are rotatably connected to the outer side surface of the upper adjustment plate, and a motor housing is provided in the middle of the adjustment plate. A first bevel gear is commonly fixed between the ends of the two grinding rollers, the first bevel gear is located inside the motor housing, and a second bevel gear is meshed at the bottom, and the second bevel gear is connected to the motor;

[0013] A first adjusting screw is rotatably connected in the adjusting groove, and the outer end of the first adjusting screw extends out of the movable frame and is connected to the motor. The threads on the two side sections of the first adjusting screw rotate in opposite directions, and symmetrical first adjusting blocks are threadedly connected on the two side sections respectively. Two first connecting rods are symmetrically arranged and rotatably connected on the upper and lower sides of the first adjusting block. The two first connecting rods located above are symmetrically inclined, and the outer ends are rotatably connected to the inner side surface of the adjusting plate at the upper position. The two first connecting rods located below are symmetrically inclined, and the outer ends are rotatably connected to the inner side surface of the adjusting plate below.

[0014] Preferably, the blowing assembly includes a blowing plate fixed on a movable frame, the blowing plate is located on the right side of the grinding assembly, and an annular wind groove is provided inside the blowing plate, and a plurality of outward-inclined blowing ports are evenly fixed on the left edge of the blowing plate in the circumferential direction, and a blowing pump is provided at the right side of the blowing plate corresponding to the movable frame, and the right side of the annular wind groove is connected to the blowing pump through a connecting port, and an air inlet channel is provided in the movable frame along the length direction, and the upper left side of the air inlet channel is connected to the blowing pump through a connecting port.

[0015] Preferably, the top pipe assembly includes a lifting plate located outside the base plate, the top surface of the lifting plate is rotatably connected to a top wheel, the middle part of the top wheel is provided with a groove, and one end is connected to a motor, the bottom of the lifting plate is rotatably connected to two symmetrically inclined second connecting rods, the bottom end of the second connecting rod is rotatably connected to the second adjusting block, and the bottom end of the second adjusting block is slidably connected to the top surface of the base, the corresponding position on the base is rotatably connected to the second adjusting screw, one end of the second adjusting screw is connected to the motor, and the two side sections of the second adjusting screw have opposite thread rotation directions and are respectively threadedly connected to the two second adjusting blocks.

[0016] Preferably, the material moving assembly includes a horizontal material moving rack located on the left and right sides of the base plate, and three grooves are provided on the top of the material moving rack corresponding to the positions of the pipe material seats on the front and rear sides and the middle position of the base plate. The inner side of the material moving rack is rotatably connected to two parallel rotating rods, and the bottom end of the rotating rod is rotatably connected to the side wall of the support box, and a third worm gear is coaxially fixed at the rotating connection. The third worm gear is located inside the support box, and a third worm is engaged with the bottom of the two third worm gears. The third worm rotates with the support box, and a third bevel gear is coaxially fixed between the two third worm gears, and the bottom of the third bevel gear is engaged with a fourth bevel gear, and the fourth bevel gear is connected to a motor.

[0017] Preferably, the first lifting structure includes a first threaded shaft fixed at the four corners of the bottom of the base plate, the lower part of the first threaded shaft is threadedly connected to the first threaded cylinder, the first threaded cylinder is rotatably connected to the base, and the bottom end extends into the inner cavity of the base and is fixed with a first worm gear, and the four first worm gears are all connected to the driving structure accordingly.

[0018] Preferably, the second lifting structure includes a second threaded shaft fixed at the four corners of the bottom of the top plate, the lower part of the second threaded shaft is threadedly connected to a second threaded barrel, the second threaded barrel is rotatably connected to the base, and the bottom end extends into the inner cavity of the base and is fixed with a second worm gear, and the four second worm gears are all connected to the driving structure accordingly.

[0019] Preferably, the driving structure includes a first worm engaged with the inner side of the first worm gear and a second worm engaged with the inner side of the second worm gear, the first worm gear and the second worm gear are both rotatably connected to the side wall of the inner cavity of the base, and the two first worm gears and the two second worm gears on the rear side are coaxially fixed, the two first worm gears and the two second worm gears located on the front side are coaxially fixed, the right ends of the two second worm gears located at the right end of the base are fixed with a first gear, the inner side of the first gear is engaged with a second gear, and the two second gears are jointly engaged with a third gear, the second gear and the third gear are both rotatably connected to the side wall of the inner cavity of the base, and the third gear is connected to a motor.

[0020] Preferably, a movable groove is provided in the middle of the top plate, a movable assembly is provided in the movable groove, a cleaning roller is provided at the bottom of the movable assembly, a dust suction groove is provided on the other side, and a dust suction pipe is fixedly connected to the top of the dust suction groove, the top of the dust suction pipe passes through the movable assembly and extends out of the top plate to be connected to an external dust suction device, two vertical spring cylinders are fixed at the bottom of the movable assembly corresponding to the two ends of the cleaning roller, a spring rod is connected to the spring cylinder through a spring, the two ends of the cleaning roller are respectively rotatably connected to the bottom ends of the two spring rods, and one end of the cleaning roller is connected to a motor;

[0021] The moving assembly includes a moving seat that is slidably connected to the moving groove, the dust suction groove and the spring cylinder are both connected to the bottom of the moving seat, and two moving screws are symmetrically arranged and threadedly connected in the moving seat. The moving screws are rotatably connected to the end of the moving groove, and one end of the moving screw is connected to a motor.

[0022] Preferably, a mounting frame is provided in the second fixed box, a plurality of filter bags are evenly mounted on the mounting frame, an air outlet slot is provided at the lower outer side of the second fixed box, and a suction fan is provided at the air outlet slot.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention is capable of simultaneously adjusting the positions of the support roller and the pressure roller by providing a driving structure, a first lifting structure, and a second lifting structure, so that the steel pipe can be pressed and positioned, and the position of the steel pipe is centered so as to correspond to the grinding assembly, thereby improving the position accuracy of the steel pipe;

[0025] 2. The present invention rotates the steel pipe by means of a motor and a pressure roller, and at the same time drives the grinding assembly to move along the inside of the steel pipe by means of a movable frame, so as to grind the inner wall of the steel pipe, and sprays and cleans the inner wall of the steel pipe after grinding by means of a spray assembly;

[0026] 3. The present invention provides a jacking assembly on both sides of the support roller, so that the steel pipe can be lifted up by the jacking assembly and moved to the second fixed box when it is not positioned, so that the end of the steel pipe extends into the interior of the second fixed box, so that the waste cleaned out from the interior of the steel pipe can be collected and processed;

[0027] 4. The present invention arranges pipe material seats on the front and rear sides of the support roller, thereby forming three workstations for loading, grinding and unloading above the base, and uses the material transfer assembly to simultaneously transfer the steel pipes at the three workstations, making the loading and unloading operations of steel pipe grinding faster and more convenient, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0031] Figure 3 for Figure 1 Schematic diagram of the structure at B in the middle;

[0032] Figure 4 It is a structural schematic diagram of the first fixed box of the present invention;

[0033] Figure 5 It is a structural schematic diagram of the grinding roller of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the mobile rack of the present invention;

[0035] Figure 7 This is a schematic structural diagram of the top wheel of the present invention;

[0036] Figure 8 Schematic diagram of the structure of the top plate of the present invention;

[0037] Figure 9 This is a schematic diagram of the bottom structure of the first threaded barrel and the second threaded barrel of the present invention;

[0038] Figure 10 It is a structural schematic diagram of the second fixed box of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 100-base, 101-pipe material seat, 102-support box, 103-material moving rack, 104-rotating rod, 105-third worm gear, 106-third worm, 107-third bevel gear, 108-fourth bevel gear;

[0041] 200-first fixed box, 201-limiting slide, 202-driving roller, 203-limiting roller;

[0042] 300-second fixed box, 301-pipe end slot, 302-air outlet slot, 303-suction fan, 304-mounting frame, 305-filter bag;

[0043] 400-bottom plate, 401-support roller, 402-first threaded shaft, 403-first threaded cylinder, 404-first worm gear, 405-first worm;

[0044] 500-top plate, 501-pressing roller, 502-second threaded shaft, 503-second threaded barrel, 504-moving groove, 505-second worm gear, 506-second worm, 507-first gear, 508-second gear, 509-third gear;

[0045] 600-mobile frame, 601-air inlet channel, 602-blowing plate, 603-blowing pump, 604-annular air trough, 605-blowing port, 606-adjustment slot;

[0046] 700-top wheel, 701-lifting plate, 702-second connecting rod, 703-second adjusting block, 704-second adjusting screw;

[0047] 800-movable seat, 801-dust suction pipe, 802-movable screw, 803-dust suction groove, 804-cleaning roller, 805-spring rod, 806-spring cylinder;

[0048] 900-first adjusting block, 901-first adjusting screw, 902-first connecting rod, 903-adjusting plate, 904-grinding roller, 905-motor housing, 906-first bevel gear, 907-second bevel gear, 908-support block. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example 1

[0050] Please refer to the accompanying drawings, the present invention provides a technical solution:

[0051] A device for grinding the inner wall of a steel pipe includes a base 100, and a first fixing box 200 and a second fixing box 300 are fixed to the left and right sides of the top surface of the base 100 respectively;

[0052] A bottom plate 400 is connected to the middle of the upper part of the base 100 through a first lifting structure. Two parallel supporting rollers 401 are symmetrically arranged and rotatably connected to the top surface of the bottom plate 400. A top plate 500 is provided above the bottom plate 400. Two parallel pressing rollers 501 are symmetrically and rotatably connected to the bottom of the top plate 500. The end of one of the pressing rollers 501 is connected to a motor. The left and right ends of the top plate 500 are respectively close to the first fixed box 200 and the second fixed box 300, and the bottom is connected to the base 100 through a second lifting structure. A cavity is provided inside the base 100, and a driving structure is provided in the cavity. The bottom ends of the first lifting structure and the second lifting structure are both connected to the driving structure accordingly.

[0053] Two pipe material seats 101 are symmetrically fixed to the rear side of the top surface of the base 100, and two pipe material seats 101 are also fixed to the front side of the top surface. The bottom of the pipe material seats 101 is provided with a groove. A jacking pipe assembly is provided between the two pipe material seats 101 on the left side of the base 100, and a jacking pipe assembly is also provided between the two pipe material seats 101 on the right side. Two material transfer assemblies are symmetrically provided on the top surface of the base 100 corresponding to the left and right sides of the bottom plate 400, and the pipe material seats 101 are located on the outside of the material transfer assemblies.

[0054] A limiting slide 201 is provided on the left side of the first fixed box 200, and a pipe end groove 301 is provided on the right side of the second fixed box 300. A movable frame 600 is slidably connected in the limiting slide 201 along the left and right directions. Both ends of the movable frame 600 extend out of the first fixed box 200, and a grinding assembly and a blowing assembly are provided on the left side of the movable frame 600. The upper and lower sides corresponding to the movable frame 600 in the first fixed box 200 are rotatably connected to the driving roller 202. The left and right sides of the driving roller 202 are symmetrically arranged and rotatably connected to the limiting roller 203, and one end of the driving roller 202 is connected to a motor.

[0055] When grinding the steel pipe, the steel pipe is positioned on the two pipe material seats 101 at the rear side of the base 100 by an external conveying device. Then, the material transfer assembly is used to transfer the steel pipe on the pipe material seats 101 to the two support rollers 401 of the bottom plate 400 and the jacking assemblies on both sides. The jacking assemblies are used to move the steel pipe upward, away from the support rollers 401, and drive the steel pipe to move into the second fixing box 300, so that the left end of the steel pipe passes through the pipe end slot 301 and extends into the second fixing box 300.

[0056] The driving structure is started, and the bottom plate 400 drives the support roller 401 upward through the first lifting assembly, while the top plate 500 drives the pressure roller 501 downward through the second lifting structure. The support roller 401 and the pressure roller 501 simultaneously clamp and position the steel pipe, and the motor drives the pressure roller 501, so that the pressure roller 501 drives the steel pipe to rotate;

[0057] While the steel pipe is rotating, the driving roller 202 is rotated by the motor in the first fixed box 200, and under the guidance of the limiting roller 203 and the limiting slide 201, the movable frame 600 drives the grinding assembly and the spraying assembly to move toward the inside of the steel pipe. During the movement, the inner wall of the rotating steel pipe is polished by the grinding assembly, and the waste generated by the grinding is moved to the left along the inside of the steel pipe by the blowing assembly, so that the waste can enter the second fixed box 300 for collection, avoiding the waste from accumulating inside the steel pipe and preventing the cleaned waste from falling to other places where it is inconvenient to collect and process.

[0058] After polishing is completed, the top plate 500 and the bottom plate 400 move to the upper and lower sides respectively, so that the steel pipe is separated from the pressure roller 501 and the support roller 401, and the steel pipe is in contact with the jacking pipe assembly, and under the action of the jacking pipe assembly, it moves to the right and separates from the second fixed box 300, and then the steel pipe is transferred to the pipe material seat 101 on the front side of the base 100 through the material moving assembly, and under the action of the subsequent material moving assembly, it moves outward so that the steel pipe can be unloaded through an external device.

[0059] The present application sets two pipe material seats 101 on the rear side of the base 100, sets a support roller 401 and a jacking pipe assembly in the middle of the base 100, and sets two pipe material seats 101 on the front side of the base 100, thereby forming three workstations above the base 100, namely the loading station, the grinding station and the unloading station, and by setting a moving assembly, the steel pipes on the loading station, the grinding station and the unloading station can be transferred at the same time, so that the steel pipes on the loading station are transferred to the grinding station, the steel pipes on the grinding station are transferred to the unloading station, and the steel pipes on the unloading station are moved outward so as to be transferred to an external device for unloading and transportation, thereby making the loading and unloading operations of steel pipe grinding faster and more convenient, and improving processing efficiency.

[0060] Among them, the grinding assembly includes an adjustment slot 606 located at the left section of the mobile frame 600 and two adjustment plates 903 symmetrically located on the upper and lower sides of the adjustment slot 606. A plurality of support blocks 908 are evenly fixed on the outer surface of the lower adjustment plate 903. The outer ends of the support blocks 908 are provided with ball bearings. Two symmetrical and coaxial grinding rollers 904 are rotatably connected to the outer surface of the upper adjustment plate 903. A motor housing 905 is provided in the middle of the adjustment plate 903. A first bevel gear 906 is fixed between the ends of the two grinding rollers 904. The first bevel gear 906 is located inside the motor housing 905, and a second bevel gear 907 is meshed at the bottom. The second bevel gear 907 is connected to the motor.

[0061] A first adjusting screw 901 is rotatably connected in the adjusting slot 606, and the outer end of the first adjusting screw 901 extends out of the movable frame 600 and is connected to a motor. The threads on the two side sections of the first adjusting screw 901 rotate in opposite directions, and symmetrical first adjusting blocks 900 are threadedly connected on the two side sections respectively. Two first connecting rods 902 are symmetrically arranged and rotatably connected on the upper and lower sides of the first adjusting block 900. The two first connecting rods 902 located above are symmetrically tilted, and the outer ends are rotatably connected to the inner side surface of the adjusting plate 903 at the upper position. The two first connecting rods 902 located below are symmetrically tilted, and the outer ends are rotatably connected to the inner side surface of the adjusting plate 903 below.

[0062] When grinding the steel pipe, the first adjusting screw 901 is driven by the motor to rotate, and the two first adjusting blocks 900 are moved outward or inward at the same time by rotating the threads in opposite directions on both sides, so that the positions of the adjusting plates 903 on both sides are adjusted relative to the movable frame 600 through the action of the connecting rod to adapt to steel pipes with different inner diameters. While the grinding roller 904 contacts the inner side of the steel pipe, it contacts the other side of the inner wall of the steel pipe through the support block 908, thereby improving the stability of the left end of the movable frame 600 and the overall structure of the grinding assembly, and reducing the friction of the support block 908 when it moves relative to the inside of the steel pipe by setting a ball.

[0063] Among them, the blowing assembly includes a blowing plate 602 fixed on the movable frame 600, the blowing plate 602 is located on the right side of the grinding assembly, and an annular wind groove 604 is provided inside the blowing plate 602, and a plurality of outward-inclined blowing ports 605 are evenly fixed along the circumferential direction on the left edge of the blowing plate 602, and a blowing pump 603 is provided at the right side position of the blowing plate 602 corresponding to the movable frame 600, and the right side of the annular wind groove 604 is connected to the blowing pump 603 through a connecting port, and an air inlet channel 601 is provided in the movable frame 600 along the length direction, and the upper left side of the air inlet channel 601 is connected to the blowing pump 603 through a connecting port.

[0064] While polishing is in progress, the external air is allowed to enter the annular wind groove 604 through the air inlet channel 601 by the action of the spray pump 603, and is sprayed out through multiple spray ports 605 to blow toward the inner wall of the steel pipe, and the waste just hanging on the inner wall is sprayed and cleaned. In this way, while the movable frame 600 drives the polishing component and the spray component to move, the waste is moved along the steel pipe and discharged into the second fixed box 300 for collection.

[0065] Among them, the material moving assembly includes a horizontal material moving rack 103 located on the left and right sides of the base plate 400. The top of the material moving rack 103 is provided with three grooves corresponding to the positions of the pipe material seats 101 on the front and rear sides and the position of the base plate 400 in the middle. The inner side of the material moving rack 103 is rotatably connected to two parallel rotating rods 104. The bottom end of the rotating rod 104 is rotatably connected to the side wall of the support box 102, and a third worm gear 105 is coaxially fixed at the rotating connection. The third worm gear 105 is located inside the support box 102, and the bottoms of the two third worm gears 105 are jointly engaged with a third worm 106. The third worm 106 rotates with the support box 102, and a third bevel gear 107 is coaxially fixed between the two third worm gears 106. The bottom of the third bevel gear 107 is engaged with a fourth bevel gear 108, and the fourth bevel gear 108 is connected to a motor.

[0066] When it is necessary to transfer the steel pipes at various positions, the motors in the two support boxes 102 are started, and the corresponding third worm 106 is driven by the motor, and the two parallel rotating rods 104 drive the horizontal material moving rack 103 to move through the transmission of the third worm 106 and the third worm wheel 105, and the material moving rack 103 can move in a circular direction while maintaining a horizontal state, so that when it rotates from the back side to the top and then to the front side, the three steel pipes are lifted up, and when it moves forward and downward, the three steel pipes are moved forward and fall onto the corresponding support rollers 401 or the pipe material seat 101, thereby realizing the transfer of the steel pipe position. Example 2

[0067] The structure of this embodiment is basically the same as that of the first embodiment, except that the first lifting structure includes a first threaded shaft 402 fixed at the four corners of the bottom of the base plate 400, and the lower part of the first threaded shaft 402 is threadedly connected to the first threaded barrel 403, the first threaded barrel 403 is rotatably connected to the base 100, and the bottom end extends into the inner cavity of the base 100, and is fixed with a first worm gear 404, the four first worm gears 404 are all correspondingly connected to the driving structure, and the four first worm gears 404 are driven by the driving structure to rotate, thereby rotating the first threaded barrel 403, so that the four first threaded shafts 402 drive the base plate 400 and the support roller 401 to rise and fall under the action of the thread, and adjust the position of the support roller 401 to adapt to steel pipes of different diameters and cooperate with various processes in the steel pipe grinding process.

[0068] The second lifting structure includes a second threaded shaft 502 fixed at the four corners of the bottom of the top plate 500, and the lower part of the second threaded shaft 502 is threadedly connected to the second threaded barrel 503, the second threaded barrel 503 is rotatably connected to the base 100, and the bottom end extends into the inner cavity of the base 100, and is fixed with a second worm gear 505, and the four second worm gears 505 are correspondingly connected to the driving structure, and the four second worm gears 505 are driven by the driving structure to rotate, thereby rotating the second threaded barrel 503, and under the action of the thread, the four first threaded shafts 402 drive the top plate 500 and the pressure roller 501 to move, so as to perform operations such as pressing and positioning the steel pipe, and can adapt to steel pipes of different diameters, and the top plate 500 and the bottom plate 400 move toward the middle at the same time, so that the steel pipe can be centered to correspond to the position of the grinding assembly.

[0069] The driving structure includes a first worm 405 meshed with the inner side of the first worm gear 404 and a second worm 506 meshed with the inner side of the second worm gear 505. The first worm 405 and the second worm gear 505 are both rotatably connected to the side wall of the inner cavity of the base 100, and the two first worm gears 405 and the two second worm gears 506 on the rear side are coaxially fixed, and the two first worm gears 405 and the two second worm gears 506 located on the front side are coaxially fixed. The right ends of the two second worm gears 506 located at the right end of the base 100 are fixed with a first gear 507, and the inner side of the first gear 507 is meshed with a second gear 508, and the two second gears 508 are meshed with a third gear 509. The second gear 508 and the third gear 509 are both rotatably connected to the side wall of the inner cavity of the base 100, and the third gear 509 is connected to a motor.

[0070] When the top plate 500 and the bottom plate 400 need to be adjusted in position at the same time, the first worm 405 and the second worm 506 on both sides are rotated at the same time through the drive of the motor and the transmission of the first gear 507, the second gear 508 and the third gear 509, and then the four first worm gears 404 and the four second worm gears 505 are rotated at the same time, thereby realizing the simultaneous driving of the first lifting structure and the second lifting structure. Example 3

[0071] The structure of this embodiment is basically the same as that of the first embodiment, except that the top pipe assembly includes a lifting plate 701 located on the outside of the bottom plate 400, and the top surface of the lifting plate 701 is rotatably connected to the top wheel 700, the middle part of the top wheel 700 is provided with a groove, and one end is connected to a motor, the bottom of the lifting plate 701 is rotatably connected to two symmetrically inclined second connecting rods 702, the bottom end of the second connecting rod 702 is rotatably connected to the second adjusting block 703, and the bottom end of the second adjusting block 703 is slidably connected to the top surface of the base 100, and the corresponding position on the base 100 is rotatably connected to the second adjusting screw 704, one end of the second adjusting screw 704 is connected to the motor, and the two side sections of the second adjusting screw 704 have opposite thread rotation directions and are respectively threadedly connected to the two second adjusting blocks 703.

[0072] When the height position of the top wheel 700 needs to be adjusted, the second adjusting screw 704 is driven to rotate by the motor, so that the two second adjusting blocks 703 move inward or outward at the same time, and then the lifting plate 701 drives the top wheel 700 to move through the connecting rod, so that the top wheel 700 contacts or disengages from the steel pipe, and after the top wheel 700 contacts the bottom of the steel pipe, the top wheel 700 is driven to rotate by the motor to move the steel pipe into or out of the pipe end groove 301. Example 4

[0073] The structure of this embodiment is basically the same as that of the first embodiment, except that a movable groove 504 is provided in the middle of the top plate 500, and a movable assembly is provided in the movable groove 504. A cleaning roller 804 is provided at the bottom of the movable assembly, and a dust suction groove 803 is provided on the other side. The top of the dust suction groove 803 is fixedly connected to a dust suction pipe 801. The top of the dust suction pipe 801 passes through the movable assembly and extends out of the top plate 500 to be connected to an external dust suction device. Two vertical spring cylinders 806 are fixed at the bottom of the movable assembly at positions corresponding to the two ends of the cleaning roller 804. A spring rod 805 is connected to the spring cylinder 806 through a spring. The two ends of the cleaning roller 804 are respectively rotatably connected to the bottom ends of the two spring rods 805, and one end of the cleaning roller 804 is connected to a motor.

[0074] The moving assembly includes a moving seat 800 that is slidably connected to the moving groove 504, the dust suction groove 803 and the spring tube 806 are both connected to the bottom of the moving seat 800, and two moving screws 802 are symmetrically arranged and threadedly connected in the moving seat 800. The moving screw 802 is rotatably connected to the end of the moving groove 504, and one end of the moving screw 802 is connected to a motor.

[0075] When the steel pipe is placed on the two supporting rollers 401 on the bottom plate 400, the supporting rollers 401 and the pressure rollers 501 are pressed and positioned against the steel pipe by the driving structure, the first lifting structure and the second lifting structure. The cleaning roller 804 contacts the outer side of the steel pipe under the action of the spring, and the pressure roller 501 and the steel pipe are driven to rotate by the motor of the pressure roller 501, so that during the rotation of the steel pipe, the outer surface of the steel pipe is polished and cleaned by the rotating cleaning roller 804, and the dust air after polishing is vacuumed by the dust suction equipment, the dust suction pipe 801 and the dust suction groove 803; according to the length of the steel pipe, after the cleaning roller 804 polishes a section of the steel pipe, the motor drives the moving screw 802 to drive the moving seat 800 and the cleaning roller 804 and other structures to move, and continue to polish the adjacent sections of the steel pipe, thereby ensuring the polishing and cleaning effect of the outer surface of the steel pipe. Example 5

[0076] The structure of this embodiment is basically the same as that of the first embodiment, except that a mounting frame 304 is provided in the second fixed box 300, and a plurality of filter bags 305 are evenly installed on the mounting frame 304. An air outlet slot 302 is provided at the lower outer portion of the second fixed box 300, and a suction fan 303 is provided at the air outlet slot 302. When the end of the steel pipe passes through the pipe end slot 301 and is located in the second fixed box 300, the blowing plate 602 blows the waste generated by the grinding inside the steel pipe into the second fixed box 300. The suction effect of the suction fan 303 prevents the waste dust from overflowing from the second fixed box 300 from the pipe end slot 301, and the waste and dust-containing air are sucked into the second fixed box 300 and filtered through the filter bag 305, so that the waste dust remains inside the filter bag 305 for subsequent processing.

[0077] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0078] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A grinding device for the inner wall of a steel pipe, comprising a base (100), a first fixing box (200) and a second fixing box (300) being fixed on the left and right sides of the top surface of the base (100), characterized in that: A bottom plate (400) is connected to the middle of the upper portion of the base (100) via a first lifting structure. Two parallel supporting rollers (401) are symmetrically arranged and rotatably connected to the top surface of the bottom plate (400). A top plate (500) is provided above the bottom plate (400). Two parallel pressing rollers (501) are symmetrically and rotatably connected to the bottom of the top plate (500). An end of one of the pressing rollers (501) is connected to a motor. The left and right ends of the top plate (500) are respectively close to the first fixed box (200) and the second fixed box (300). The bottom of the top plate (500) is connected to the base (100) via a second lifting structure. A cavity is provided inside the base (100). A driving structure is provided in the cavity. The bottom ends of the first lifting structure and the second lifting structure are both correspondingly connected to the driving structure. Two pipe material seats (101) are symmetrically fixed on the rear side of the top surface of the base (100), and two pipe material seats (101) are correspondingly fixed on the front side of the top surface. A top pipe assembly is provided between the two pipe material seats (101) on the left side of the base (100), and a top pipe assembly is also provided between the two pipe material seats (101) on the right side. Two material transfer assemblies are symmetrically provided on the left and right sides of the top surface of the base (100) corresponding to the bottom plate (400), and the pipe material seats (101) are located outside the material transfer assemblies. The jacking pipe assembly comprises a lifting plate (701) located outside the bottom plate (400), the top surface of the lifting plate (701) is rotatably connected to a jacking wheel (700), and one end of the jacking wheel (700) is connected to a motor; The material moving assembly includes a horizontal material moving rack (103) located on the left and right sides of the base plate (400), and three grooves are provided on the top of the material moving rack (103) corresponding to the positions of the pipe material seats (101) on the front and rear sides and the position of the base plate (400) in the middle. The inner side of the material moving rack (103) is rotatably connected to two parallel rotating rods (104), the bottom end of the rotating rod (104) is rotatably connected to the side wall of the support box (102), and a third worm gear (105) is coaxially fixed at the rotating connection. The third worm gear (105) is located inside the support box (102), and the bottoms of the two third worm gears (105) are jointly engaged with a third worm (106), the third worm (106) rotates with the support box (102), and a third bevel gear (107) is coaxially fixed between the two third worm gears (106), the bottom of the third bevel gear (107) is engaged with a fourth bevel gear (108), and the fourth bevel gear (108) is connected to a motor; A limiting slide groove (201) is provided on the left side surface of the first fixed box (200), and a pipe end groove (301) is provided on the right side surface of the second fixed box (300). A movable frame (600) is slidably connected in the limiting slide groove (201) along the left and right directions. Both ends of the movable frame (600) extend out of the first fixed box (200), and a grinding component and a blowing component are provided on the left side of the movable frame (600). The upper and lower sides of the corresponding movable frame (600) in the first fixed box (200) are rotatably connected to driving rollers (202). The left and right sides of the driving roller (202) are symmetrically arranged and rotatably connected to the limiting roller (203), and one end of the driving roller (202) is connected to a motor.

2. The grinding device for the inner wall of a steel pipe according to claim 1, characterized in that: The grinding assembly comprises an adjustment slot (606) located at the left side of the movable frame (600) and two adjustment plates (903) symmetrically located on the upper and lower sides of the adjustment slot (606); a plurality of support blocks (908) are evenly fixed on the outer side of the adjustment plate (903) located at the bottom; the outer ends of the support blocks (908) are provided with ball bearings; two symmetrical and coaxial grinding rollers (904) are rotatably connected to the outer side of the adjustment plate (903) located at the top; a motor housing (905) is provided in the middle of the adjustment plate (903); a first bevel gear (906) is fixed between the ends of the two grinding rollers (904); the first bevel gear (906) is located inside the motor housing (905) and is meshed with a second bevel gear (907) at the bottom; the second bevel gear (907) is connected to the motor; A first adjusting screw (901) is rotatably connected in the adjusting groove (606), and the outer end of the first adjusting screw (901) extends out of the movable frame (600) and is connected to a motor. The threads on the two side sections of the first adjusting screw (901) are rotated in opposite directions, and symmetrical first adjusting blocks (900) are respectively threadedly connected on the two side sections. Two first connecting rods (902) are symmetrically arranged on the upper and lower sides of the first adjusting block (900) and are rotatably connected. The two first connecting rods (902) located above are symmetrically tilted, and the outer ends are rotatably connected to the inner side surface of the adjusting plate (903) at the upper position. The two first connecting rods (902) located below are symmetrically tilted, and the outer ends are rotatably connected to the inner side surface of the adjusting plate (903) at the lower position.

3. The grinding device for the inner wall of a steel pipe according to claim 1, characterized in that: The blowing assembly includes a blowing plate (602) fixed on a movable frame (600), the blowing plate (602) is located on the right side of the grinding assembly, and an annular air groove (604) is provided inside the blowing plate (602), a plurality of outwardly inclined blowing ports (605) are evenly fixed along the circumferential direction on the left side edge of the blowing plate (602), and a blowing pump (603) is provided at a position on the right side of the blowing plate (602) of the movable frame (600), the right side of the annular air groove (604) is connected to the blowing pump (603) through a connecting port, and an air inlet channel (601) is provided in the movable frame (600) along the length direction, and the upper left side of the air inlet channel (601) is connected to the blowing pump (603) through a connecting port.

4. The grinding device for the inner wall of a steel pipe according to claim 1, characterized in that: The bottom of the lifting plate (701) is rotatably connected to two symmetrically inclined second connecting rods (702), the bottom end of the second connecting rod (702) is rotatably connected to a second adjusting block (703), and the bottom end of the second adjusting block (703) is slidably connected to the top surface of the base (100), and a second adjusting screw (704) is rotatably connected to a corresponding position on the base (100), one end of the second adjusting screw (704) is connected to a motor, and the two side sections of the second adjusting screw (704) have opposite thread rotation directions and are respectively threadedly connected to the two second adjusting blocks (703).

5. The grinding device for the inner wall of a steel pipe according to claim 1, characterized in that: The first lifting structure includes a first threaded shaft (402) fixed at the four corners of the bottom of the base plate (400), the lower part of the first threaded shaft (402) is threadedly connected to a first threaded barrel (403), the first threaded barrel (403) is rotatably connected to the base (100), and the bottom end extends into the inner cavity of the base (100) and is fixed with a first worm gear (404), and the four first worm gears (404) are all connected to the driving structure accordingly.

6. The device for grinding the inner wall of a steel pipe according to claim 5, characterized in that: The second lifting structure includes a second threaded shaft (502) fixed at the four corners of the bottom of the top plate (500), the lower part of the second threaded shaft (502) is threadedly connected to a second threaded barrel (503), the second threaded barrel (503) is rotatably connected to the base (100), and the bottom end extends into the inner cavity of the base (100) and is fixed with a second worm gear (505), and the four second worm gears (505) are all connected to the driving structure accordingly.

7. The device for grinding the inner wall of a steel pipe according to claim 6, characterized in that: The driving structure includes a first worm (405) meshed with the inner side of the first worm gear (404) and a second worm (506) meshed with the inner side of the second worm gear (505), the first worm (405) and the second worm gear (505) are both rotatably connected to the side wall of the inner cavity of the base (100), and the two first worms (405) and the two second worms (506) on the rear side are coaxially fixed, the two first worms (405) and the two second worms (506) located on the front side are coaxially fixed, the right ends of the two second worms (506) located at the right end of the base (100) are fixed with a first gear (507), the inner side of the first gear (507) is meshed with a second gear (508), and a third gear (509) is meshed between the two second gears (508), the second gear (508) and the third gear (509) are both rotatably connected to the side wall of the inner cavity of the base (100), and the third gear (509) is connected to a motor.

8. The device for grinding the inner wall of a steel pipe according to claim 1, characterized in that: A movable groove (504) is provided in the middle of the top plate (500), a movable assembly is provided in the movable groove (504), a cleaning roller (804) is provided at the bottom of the movable assembly, a dust suction groove (803) is provided on the other side, and a dust suction pipe (801) is fixedly connected to the top of the dust suction groove (803), the top of the dust suction pipe (801) passes through the movable assembly and extends out of the top plate (500), two vertical spring cylinders (806) are fixed at the bottom of the movable assembly at positions corresponding to the two ends of the cleaning roller (804), a spring rod (805) is connected to the spring cylinder (806) through a spring, the two ends of the cleaning roller (804) are respectively rotatably connected to the bottom ends of the two spring rods (805), and one end of the cleaning roller (804) is connected to a motor; The moving assembly includes a moving seat (800) slidably connected to the moving groove (504), a dust suction groove (803) and a spring cylinder (806) are both connected to the bottom of the moving seat (800), and two moving screws (802) are symmetrically arranged and threadedly connected in the moving seat (800), the moving screws (802) are rotatably connected to the end of the moving groove (504), and one end of the moving screw (802) is connected to a motor.

9. The device for grinding the inner wall of a steel pipe according to claim 1, characterized in that: A mounting frame (304) is provided in the second fixed box (300), and a plurality of filter bags (305) are evenly mounted on the mounting frame (304). An air outlet slot (302) is provided at the lower portion of the outer side of the second fixed box (300), and a suction fan (303) is provided at the air outlet slot (302).

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