A device for polishing the inner wall of a pipe

Abstract

The application discloses a pipeline inner wall polishing device and relates to the technical field of pipeline polishing. The device comprises a frame body, a plurality of groups of first sliding grooves are embedded in the right side wall of the frame body, a cooperation plate is rotationally connected to the left end of the frame body, a plurality of groups of arc-shaped driving grooves are embedded in the side wall of the cooperation plate, the first sliding grooves and the arc-shaped driving grooves are in sliding fit with the two ends of a driving rod, the driving rod is in T shape, the other end of the driving rod is slidably connected through the side wall of the frame body and the side wall of a containing frame in a driving assembly; through the sliding fit of the arc-shaped driving grooves and the T-shaped driving rod, the cooperation plate can synchronously drive a plurality of groups of driving rods to move along the first sliding grooves when the cooperation plate rotates, the diameter of the containing frame is adjusted in a small range, the inflation pump is used for inflating and expanding the rubber ring layer to form secondary sealing and fixing, and the axial stability during polishing is ensured.

Description

Technical Field

[0001] This invention relates to the field of pipe grinding technology, specifically a pipe inner wall grinding device. Background Technology

[0002] Patent CN222308323U discloses a pipe inner wall grinding device, including a fixed rod with two sets of parallel retractable and expandable movable structures. A grinding structure is set between the two sets of movable structures. The movable structure includes multiple hinge seats rotatably connected to movable wheels. The multiple hinge seats are all hinged to the fixed rod through hinge rods. It also includes a retraction and expansion mechanism that synchronously adjusts the angle between the multiple hinge rods and the fixed rod. The grinding structure is set in multiple sets and is located between two opposite hinge seats in the two sets of movable structures. The grinding structure includes a U-shaped frame. This utility model can directly support both sides of the welded part of the inner wall of the pipe.

[0003] Patent CN212122644U discloses a grinding device for grinding the inner wall of stainless steel pipes, including a grinding roller. A grinding groove is provided in the middle of one side of the grinding roller. An adjusting rod is provided in the grinding groove. The grinding roller is provided with a plurality of first adjusting holes distributed in a circle and communicating with the grinding groove. Each of the first adjusting holes is provided with a first adjusting block that is slidably connected. A grinding block is fixedly connected to the outside of each of the first adjusting blocks. Abrasive sand is fixedly connected to each of the grinding blocks.

[0004] The aforementioned prior art enables the simultaneous opening or closing of the grinding block and polishing block to grind the inner walls of stainless steel pipes of various diameters, making it more convenient and faster. However, during the grinding process, the area to be ground and the area to be ground inside the pipe are not separated, and the grinding dust in the area to be ground is easily transported to the area to be ground. Summary of the Invention

[0005] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a device for grinding the inner wall of a pipe.

[0006] This invention is implemented as follows: a pipe inner wall grinding device is constructed, which includes a frame. Multiple sets of first sliding grooves are embedded in the right side wall of the frame. A mating plate is rotatably connected to the left end of the frame. Multiple sets of arc-shaped drive grooves are embedded in the side wall of the mating plate. The first sliding grooves and arc-shaped drive grooves are slidably engaged with both ends of a drive rod. The drive rod is T-shaped, and its other end slides through the side wall of the frame and is fixedly connected to the side wall of a receiving frame inside the drive assembly. A control assembly is provided on the right side wall of the frame and is connected to a grinding assembly. A drive wheel assembly is fixedly connected to the receiving frame inside the multiple sets of drive assemblies. The side walls of the multiple sets of receiving frames are fixedly connected to the side walls of a rubber ring layer. A concave plate is fixedly connected to the outer peripheral wall of the rubber ring layer. A shielding membrane is fixedly connected to the outer surface of the rubber ring layer and the outer peripheral wall of the frame. An air pump is bolted to the receiving frame, and the output end of the air pump is connected to the inside of the rubber ring layer through an output pipe.

[0007] The rubber ring expands as a whole, and the expanded rubber ring drives the concave plate to contact the inner wall of the pipe. The concave plate, with the help of the shielding film, divides the grinding area in the inner wall of the pipe into two areas: one is the grinding area and the other is the ground area, thus preventing the dust generated in the grinding area from being transported to the ground area.

[0008] The frame is provided in two sets;

[0009] When the mating plate rotates, it drives the arc-shaped drive groove to rotate. The mating plate pushes the drive rod away from the other end of the arc-shaped drive groove and slides in the first slide groove.

[0010] Preferably, two sets of frames are placed in opposite directions at the left and right ends of the pipe, and the position between the two sets of frames is adjusted so that the concave plates on the two sets of frames contact the inner wall of the pipe. The shielding membranes located at the left and right ends of the pipe form an adjustable-length closed space between the two sets of shielding membranes. Air is drawn in by the first suction pump and delivered to the guide pipe, and then enters the closed space through the drive pipe. It is observed whether there is air leakage on the outer wall of the pipe, and the pipe sidewall or pipe weld of this closed space can be tested for gaps.

[0011] Preferably, the control component includes a base, which is fixedly connected to the right side wall of the frame. A first motor is bolted to the base, and the output shaft of the first motor is fixedly connected to a drive gear. The drive gear meshes with a driven gear, and the driven gear is rotatably connected to the center of the frame. The inner shaft of the driven gear passes through the center of the frame and is fixedly connected to the center of the mating plate. The driven gear is used to drive the mating plate to rotate.

[0012] Preferably, a mating gear is rotatably connected to the right side wall of the base, and the center of the mating gear is fixedly connected to the output shaft of an auxiliary motor. The auxiliary motor is bolted to the base, and the mating gear meshes with the driving gear.

[0013] Preferably, the drive gear is rotatably connected to the base, the center of the drive gear is fixedly connected to the connecting shaft, the other end of the drive gear is fixedly connected to the outer rod, and multiple sets of distance sensors are fixedly connected at equal intervals to the side wall of the outer rod.

[0014] Preferably, an electric push rod is bolted to the inner side of the outer rod, the telescopic end of the electric push rod is fixedly connected to the sliding rod, a grating ruler is embedded in the surface of the sliding rod, a reading head is bolted to the inner side wall of the outer rod above the grating ruler, and an adjustment component is fixedly connected to the end of the sliding rod away from the electric push rod.

[0015] Preferably, the adjustment assembly consists of an electric push rod, an insertion rod, and a grating ruler. The grating ruler is embedded in the insertion rod, and the insertion rod is slidably connected to the sliding rod. The sliding rod is provided with another set of reading heads that cooperate with the grating ruler.

[0016] The insertion rod is fixedly connected to the grinding assembly.

[0017] Preferably, the drive assembly includes a receiving frame, a first suction pump is bolted to the receiving frame, and a guide pipe is fixedly connected inside the receiving frame. The guide pipe is ring-shaped and passes through multiple sets of inner sidewalls of the receiving frame in a closed configuration.

[0018] Preferably, the output end of the first suction pump is connected to the guide pipe, the guide pipe is connected to the drive pipe, the drive pipe passes through the receiving frame and the shielding membrane and is exposed to the right end area of ​​the frame, the guide pump is bolted inside the receiving frame, the output end of the guide pump is connected to the concave plate through a delivery pipe through the rubber ring layer, and a valve is provided on the side wall of the receiving frame.

[0019] The present invention has the following advantages: The present invention provides an improved pipe inner wall grinding device, which, compared with similar equipment, has the following improvements:

[0020] The pipe inner wall grinding device of the present invention uses the sliding cooperation between the arc-shaped drive groove and the T-shaped drive rod. When the mating plate rotates, it can synchronously drive multiple sets of drive rods to move along the first sliding groove, realize the micro-adjustment of the diameter of the receiving frame to form a circle, and the air pump inflates the rubber ring layer to form a secondary seal and fix it, and ensure axial stability during grinding.

[0021] The present invention discloses a pipe inner wall grinding device, wherein an electric push rod drives a sliding rod to move, and a grating ruler and a reading head cooperate to control the feed amount of the grinding wheel; an auxiliary motor drives an outer rod to rotate through a gear set, thereby enabling the grinding assembly to achieve 360° circumferential positioning; the outer rod drives multiple sets of distance sensors to rotate, and the distance sensors can detect the distance between themselves and the pipe sidewall; during the rotation of the outer rod, the multiple sets of distance sensors can rotate circumferentially around the center of the pipe, and the multiple sets of distance sensors use the center of the pipe as the detection point to sense the distance between themselves and the inner wall of the pipe, thereby determining whether the circumferential grinding depth of the inner wall of the pipe is consistent.

[0022] The present invention discloses a pipe inner wall grinding device in which the rubber ring expands as a whole. The expanded rubber ring drives the concave plate to contact the inner wall of the pipe. The concave plate, with the cooperation of the shielding film, divides the grinding area in the inner wall of the pipe into two areas: one is the grinding area and the other is the grinding completed area, thus preventing the dust generated in the grinding area during the grinding process from being transported to the grinding completed area.

[0023] The pipe inner wall grinding device of the present invention can place two sets of frames in opposite directions at the left and right ends of the pipe, and adjust the position between the two sets of frames so that the concave plates on the two sets of frames contact the inner wall of the pipe. The shielding membranes located at the left and right ends of the pipe form an adjustable closed space between the two sets of shielding membranes. Air is drawn in by the first suction pump and delivered to the guide pipe and then enters the closed space through the drive pipe. It can observe whether there is air leakage on the outer peripheral wall of the pipe, and can test whether there are gaps in the pipe side wall or pipe weld of the closed space.

[0024] When there is only a single frame inside the pipeline, the air transmitted by multiple drive pipes can blow the polished area inside the pipeline in multiple directions.

[0025] The present invention discloses a pipe inner wall grinding device. When testing the weld seam of a pipe, the solution stored in the receiving frame is drawn into the concave plate by an internal guide pump. The concave plate encloses the pipe seam, and the solution fills the space between the concave plate and the weld seam, so that the solution in the concave plate comes into contact with the annular seam. The solution is then allowed to remain still for a period of time to allow the solution to come into contact with the seam. Next, the guide pump in the receiving frame located below is controlled to operate, and the guide pump draws the solution in the concave plate into the receiving frame, so that the solution in the receiving frame is returned to the inside of the set of frames. Then, other solutions in other sets of receiving frames are respectively transported into the concave plate to test the pipe seam. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the use of the present invention with pipes. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the use of the present invention with pipes. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0030] Figure 5 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0031] Figure 6 This is a schematic diagram of the structure of the present invention. Figure 4 ;

[0032] Figure 7 This is a schematic diagram of the control component structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the sliding rod connection structure of the present invention;

[0034] Figure 9 This is a front view of the present invention;

[0035] Figure 10 This is the invention Figure 9 Sectional view at point BB in the middle;

[0036] Figure 11 This is the left view of the present invention.

[0037] The components include: frame-1, first slide groove-2, drive rod-3, mating plate-4, arc-shaped drive groove-5, drive assembly-6, control assembly-7, grinding assembly-8, drive wheel assembly-9, rubber ring layer-10, concave plate-11, shielding film-12, air pump-13; receiving frame-61, first suction pump-62, guide pipe-63, drive pipe-64, guide pump-65, transmission pipe-66, valve-67; base-71, first motor-72, drive gear-73, driven gear-74, mating gear-75, driving gear-76, connecting shaft-77, outer rod-78, distance sensor-79, electric push rod-710, sliding rod-711, grating ruler-712, and adjustment assembly-713. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1-11 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0039] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Please see Figures 1-11 The present invention discloses a pipe inner wall grinding device, comprising a frame 1, wherein multiple sets of first sliding grooves 2 are embedded in the right side wall of the frame 1, and a mating plate 4 is rotatably connected to the left end of the frame 1. Multiple sets of arc-shaped drive grooves 5 are embedded in the side wall of the mating plate 4. The first sliding grooves 2 and the arc-shaped drive grooves 5 are slidably engaged with both ends of a drive rod 3. The drive rod 3 is T-shaped, and the other end of the drive rod 3 slides through the side wall of the frame 1 and is fixedly connected to the side wall of a receiving frame 61 within a drive assembly 6. The multiple sets of drive rods 3 are moved by controlling the arc-shaped drive grooves 5. Adjust the position of the receiving frame 61, and thereby adjust the diameter of the circle formed by the multiple sets of receiving frames 61 and the diameter of the rubber ring layer 10, so that the drive wheel assembly 9 on the receiving frame 61 contacts the inner wall of the pipe; a controller is provided on the frame 1, and the controller is provided with a 5G communication module. The 5G communication module is used to control and transmit data to the grinding assembly 8, drive wheel assembly 9, air pump 13, first suction pump 62, flow guide pump 65, first motor 72, distance sensor 79, electric push rod 710, and grating ruler 712.

[0042] During the grinding of the pipe, the frame 1 is placed inside the pipe, and then the first motor 72 is controlled to drive the drive gear 73 and the driven gear 74 to rotate. The driven gear 74 drives the mating plate 4 to rotate. The mating plate 4 drives the drive rod 3 and the receiving frame 61 to move through the arc-shaped drive groove 5. The receiving frame 61 drives multiple sets of drive wheel assemblies 9 to contact the inner wall of the pipe. Then, the drive wheel assembly 9 is controlled to move axially inside the pipe.

[0043] When the device moves to the grinding area, the control adjustment component 713 adjusts the radial position of the grinding component 8. The movement of the grinding component 8 is sensed by the grating ruler 712 and the reading head inside the adjustment component 713, so that the grinding component 8 contacts the inner wall of the pipe, and the grinding wheel on the grinding component 8 is controlled to rotate, and the grinding wheel grinds the inner wall of the pipe.

[0044] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The right side wall of the frame 1 is provided with a control component 7, which is connected to the grinding component 8. The receiving frame 61 in the multiple sets of drive components 6 is fixedly connected with a drive wheel component 9. The drive wheel component 9 consists of a base, a roller, and an output motor. The output motor drives the roller to rotate on the base. The base is fixedly connected to the side wall of the receiving frame 61. The side wall of the multiple sets of receiving frames 61 is fixedly connected to the side wall of the rubber ring layer 10 (the rubber ring layer 10 adopts the principle of inflation of bicycle inner tube). The outer peripheral wall of the rubber ring layer 10 is fixedly connected with a concave plate 11. The outer surface of the rubber ring layer 10 is fixedly connected to the outer peripheral wall of the frame 1 with a shielding film 12. The left and right ends of the concave plate 11 are outwardly flared (V-shaped), which makes it convenient for the left and right ends of the opening of the concave plate 11 to be squeezed and expanded outward when the concave plate 11 comes into contact with the pipe.

[0045] An air pump 13 is bolted to the housing frame 61. The output end of the air pump 13 is connected to the rubber ring 10 through an output pipe, and a one-way valve is provided in the output pipe to prevent air from flowing back into the rubber ring 10.

[0046] A sealing cylinder 1A is fixedly connected to the right side wall of the frame 1. The outer rod 78 slides through the sealing cylinder 1A and the sealing cylinder 1A is in close contact with the outer surface of the outer rod 78, which improves the sealing performance of the shielding film 12. The end of the sealing cylinder 1A away from the frame 1 is coaxial with the drive gear 76, which facilitates the rotation of the outer rod 78.

[0047] An electromagnetic valve 1B is installed inside the receiving frame 61. One end of the electromagnetic valve 1B is connected to the rubber ring 10 to facilitate the discharge of air from the rubber ring 10. Multiple receiving frames 61 can be filled with gasoline, sodium chloride solution (salt water), industrial wastewater, ammonia, etc.

[0048] During the polishing process, the air pump 13 draws gas into the rubber ring 10, causing the rubber ring 10 to expand. The expanded rubber ring 10 then drives the concave plate 11 to contact the inner wall of the pipe. The concave plate 11, with the cooperation of the shielding film 12, divides the polishing area in the inner wall of the pipe into two areas: one is the polishing area, and the other is the polished area. This prevents the dust generated in the polishing area during the polishing process from being transported to the polished area.

[0049] Two sets of frames 1 can be placed in opposite directions at the left and right ends of the pipe, and the position between the two sets of frames 1 can be adjusted so that the concave plates 11 on the two sets of frames 1 contact the inner wall of the pipe. The shielding membranes 12 located at the left and right ends of the pipe form an adjustable closed space between the two sets of shielding membranes 12. Air is drawn in by the first suction pump 62 and delivered to the guide pipe 63, and then enters the closed space through the drive pipe 64. It can be observed whether there is air leakage on the outer wall of the pipe, and whether there are gaps in the side wall of the pipe or the weld of the pipe in this closed space.

[0050] At the same time, when there is only a single frame 1, the air transmitted by multiple drive pipes 64 can blow the polished area inside the pipe in multiple directions.

[0051] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The control component 7 includes a base 71, which is fixedly connected to the right side wall of the frame 1. A first motor 72 is bolted to the base 71. The output shaft of the first motor 72 is fixedly connected to a drive gear 73. The drive gear 73 meshes with a driven gear 74. The driven gear 74 is rotatably connected to the center of the frame 1. The inner shaft of the driven gear 74 passes through the center of the frame 1 and is fixedly connected to the center of the mating plate 4. The driven gear 74 is used to drive the mating plate 4 to rotate.

[0052] A mating gear 75 is rotatably connected to the right side wall of the base 71. The center of the mating gear 75 is fixedly connected to the output shaft of an auxiliary motor. The auxiliary motor is bolted to the base 71. The mating gear 75 meshes with the drive gear 76. The drive gear 76 is rotatably connected to the base 71. The center of the drive gear 76 is fixedly connected to the connecting shaft 77. The other end of the drive gear 76 is fixedly connected to the outer rod 78. Multiple distance sensors 79 are fixedly connected at equal intervals to the side wall of the outer rod 78. An electric push rod 710 is bolted to the inside of the outer rod 78. The telescopic end of the electric push rod 710 is fixedly connected to the sliding rod 711. A grating ruler 712 is embedded in the surface of the sliding rod 711. A reading head is bolted to the inner side wall of the outer rod 78 above the grating ruler 712. An adjustment component 713 is fixedly connected to the end of the sliding rod 711 away from the electric push rod 710. The sliding rod 711 is slidably connected to the connecting shaft 77.

[0053] The adjustment assembly 713 consists of an electric push rod 710, an insertion rod, and a grating ruler 712. The grating ruler 712 is embedded in the insertion rod, and the insertion rod is slidably connected to the sliding rod 711. The sliding rod 711 is provided with another set of reading heads that cooperate with the grating ruler 712.

[0054] The system includes a control electric push rod 710 that moves a sliding rod 711, causing the grating ruler 712 on the sliding rod 711 to move. The reading head senses the movement of the grating ruler 712 and determines the X-axis movement of the grinding assembly 8. An auxiliary motor drives a gear 75 to rotate, which in turn drives the connecting shaft 77 and the outer rod 78 to rotate. The connecting shaft 77 drives the grinding assembly 8 to rotate, allowing it to grind the inner wall of the pipe. The outer rod 78 drives multiple distance sensors 79 to rotate. The distance sensors 79 detect the distance between themselves and the side wall of the pipe. During the rotation of the outer rod 78, the multiple distance sensors 79 rotate circumferentially around the center of the pipe. The multiple distance sensors 79 use the center of the pipe as the detection point to sense the distance between themselves and the inner wall of the pipe, thus determining whether the circumferential grinding depth of the inner wall of the pipe is consistent.

[0055] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 The insertion rod is fixedly connected to the grinding assembly 8; the grinding assembly 8 consists of a grinding motor, a grinding wheel and a connecting seat, the grinding wheel and the connecting seat are rotatably connected, the grinding motor and the connecting seat are bolted together, and the output shaft of the grinding motor is fixedly connected to the center of the grinding wheel.

[0056] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11The drive assembly 6 includes a receiving frame 61. During use, the lowermost receiving frame 61 is not filled with solution, facilitating solution suction and recovery. A first suction pump 62 is bolted to the receiving frame 61. A guide tube 63 is fixedly connected inside the receiving frame 61. The guide tube 63 is annular and composed of both silicone and stainless steel. The guide tube 63 inside the receiving frame 61 is made of stainless steel, while the guide tube 63 between the side walls of the two sets of receiving frames 61 is made of silicone, allowing the guide tube 63 to stretch and retract as the receiving frames 61 open or close. The guide tube 63 passes through the inner side walls of multiple sets of receiving frames 61 in a closed configuration. The output end of the first suction pump 62 is connected to the guide tube 63, and the guide tube 63 is connected to the drive tube 64. The drive pipe 64 passes through the receiving frame 61 and the shielding membrane 12, extending to the right end of the frame 1. A guide pump 65 is bolted inside the receiving frame 61. The output end of the guide pump 65 is connected to the concave plate 11 through a delivery pipe via a rubber ring layer 10. The concave plate 11 has an overall annular structure and a concave cross-section. A valve 67 is provided on the side wall of the receiving frame 61, through which liquid is replenished to the receiving frame 61. A one-way valve is provided inside the drive pipe 64. Multiple sets of the first slide groove 2, drive rod 3, mating plate 4, and arc-shaped drive groove 5 are provided, and the number of drive rods 3 and drive components 6 are the same. The air inlet ends of the first suction pump 62 and the air pump 13 are both equipped with filters to prevent dust from entering the interior of the first suction pump 62 and the air pump 13.

[0057] During the testing of the pipe weld, the solution stored in the receiving frame 61 is drawn into the concave plate 11 by the internal guide pump 65, and the concave plate 11 encloses the gap of the pipe. The solution fills the space between the concave plate 11 and the weld (or other solutions in multiple sets of receiving frames 61 are drawn and transported to the space between the concave plate 11 and the weld, so that multiple sets of solutions mix and come into contact with the weld). The solution in the concave plate 11 comes into contact with the annular gap, and is left to stand for a period of time to allow the solution to contact the gap, simulating a complex working condition. The synergistic corrosion effect; secondly, the operation of the diversion pump 65 in the lower receiving frame 61 is controlled, the diversion pump 65 draws the solution in the concave plate 11 into the interior of the receiving frame 61 (and due to gravity, the solution above will automatically slide down to the lower area), so that the solution in the receiving frame 61 is recovered into the interior of the set of frames 61; then other solutions in other sets of receiving frames 61 are transported to the concave plate 11 to test the pipe gaps; one set of receiving frames 61 is filled with tap water to facilitate cleaning of pipe welds.

[0058] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipe inner wall grinding device, comprising a frame, a plurality of first sliding grooves embedded in the right side wall of the frame, a mating plate rotatably connected to the left end of the frame, a plurality of arc-shaped drive grooves embedded in the side wall of the mating plate, the first sliding grooves and the arc-shaped drive grooves slidingly engaging with both ends of a drive rod, the drive rod being T-shaped, and the other end of the drive rod slidingly passing through the side wall of the frame and being fixedly connected to the side wall of the receiving frame inside the drive assembly; Its features are: The right side wall of the frame is equipped with a control component, which is connected to the grinding component; The drive wheel assembly is fixedly connected to the receiving frame within the multiple drive components; Multiple sets of receiving frame sidewalls are fixedly connected to the rubber ring layer sidewalls, the outer peripheral wall of the rubber ring layer is fixedly connected to a concave plate, and the outer surface of the rubber ring layer is fixedly connected to the outer peripheral wall of the frame with a shielding film. An air pump is bolted to the housing frame, and the output end of the air pump is connected to the inside of the rubber ring through an output pipe. The rubber ring expands as a whole, and the expanded rubber ring drives the concave plate to contact the inner wall of the pipe. The concave plate, with the help of the shielding film, divides the grinding area in the inner wall of the pipe into two areas: one is the grinding area and the other is the ground area, thus preventing the dust generated in the grinding area from being transported to the ground area. The frame is provided in two sets; When the mating plate rotates, it drives the arc-shaped drive groove to rotate. The mating plate pushes the drive rod away from the other end of the arc-shaped drive groove and slides in the first slide groove.

2. The pipe inner wall grinding device according to claim 1, characterized in that: Two sets of frames are placed in opposite directions at the left and right ends of the pipe. The position between the two sets of frames is adjusted so that the concave plates on the two sets of frames contact the inner wall of the pipe. The shielding membranes located at the left and right ends of the pipe form an adjustable-length closed space between the two sets of shielding membranes. Air is drawn in by the first suction pump and delivered to the guide pipe, and then enters the closed space through the drive pipe. It is observed whether there is air leakage on the outer wall of the pipe, and whether there are gaps in the side wall of the pipe or the weld of the pipe in this closed space.

3. The pipe inner wall grinding device according to claim 2, characterized in that: The control component includes a base, which is fixedly connected to the right side wall of the frame. A first motor is bolted to the base. The output shaft of the first motor is fixedly connected to a drive gear. The drive gear meshes with a driven gear. The driven gear is rotatably connected to the center of the frame. The inner shaft of the driven gear passes through the center of the frame and is fixedly connected to the center of the mating plate. The driven gear is used to drive the mating plate to rotate.

4. The pipe inner wall grinding device according to claim 3, characterized in that: A mating gear is rotatably connected to the right side wall of the base. The center of the mating gear is fixedly connected to the output shaft of an auxiliary motor. The auxiliary motor is bolted to the base, and the mating gear meshes with the driving gear.

5. The pipe inner wall grinding device according to claim 4, characterized in that: The drive gear is rotatably connected to the base, the center of the drive gear is fixedly connected to the connecting shaft, and the other end of the drive gear is fixedly connected to the outer rod. Multiple distance sensors are fixedly connected at equal intervals to the side wall of the outer rod.

6. The pipe inner wall grinding device according to claim 5, characterized in that: An electric push rod is bolted to the inner side of the outer rod. The telescopic end of the electric push rod is fixedly connected to the sliding rod. A grating ruler is embedded in the surface of the sliding rod. A reading head is bolted to the inner side wall of the outer rod above the grating ruler. An adjustment component is fixedly connected to the end of the sliding rod away from the electric push rod.

7. The pipe inner wall grinding device according to claim 6, characterized in that: The adjustment assembly consists of an electric push rod, an insertion rod, and a grating ruler. The grating ruler is embedded in the insertion rod, and the insertion rod is slidably connected to the sliding rod. The sliding rod is equipped with another set of reading heads that cooperate with the grating ruler. The insertion rod is fixedly connected to the grinding assembly.

8. The pipe inner wall grinding device according to claim 1, characterized in that: The drive assembly includes a housing frame, on which a first suction pump is bolted. A guide tube is fixedly connected inside the housing frame. The guide tube is ring-shaped and passes through multiple sets of inner sidewalls of the housing frame in a closed configuration.

9. The pipe inner wall grinding device according to claim 8, characterized in that: The output end of the first suction pump is connected to the guide pipe, which is connected to the drive pipe. The drive pipe passes through the receiving frame and the shielding membrane and is exposed to the right end area of ​​the frame. The guide pump is bolted inside the receiving frame. The output end of the guide pump is connected to the concave plate through a delivery pipe through the rubber ring layer. A valve is provided on the side wall of the receiving frame.

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