Metal pipeline inner wall polishing device

Abstract

The invention discloses a metal pipeline inner wall grinding device, and relates to the technical field of pipeline machining devices. The metal pipeline inner wall grinding device comprises a rust removal device base, a main supporting frame, a rotating frame, a positioning unit, an arc-shaped frame, a flexible shaft, a rust removal grinding disc and a driving unit. The rust removal device base is arranged at a target position; the main supporting frame is arranged on the rust removal device base. According to the metal pipeline inner wall grinding device, the flexible shaft is connected with the rust removal grinding disc and can flexibly enter a bent pipe, the side face of the rust removal grinding disc is attached to the pipe wall and rotates along with the flexible shaft to effectively remove rust, and the rust removal problem in the bent pipe is solved; and meanwhile, the driving unit realizes collaborative operation of high rotating speed of the rust removal millstone and low-speed rotation of the rotating frame and the metal pipe to be machined, the automation degree is high, manual alignment operation is reduced, the rust removal efficiency and quality are improved, and time and manpower are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline processing devices, and particularly to a metal pipeline inner wall grinding device. Background Technique

[0002] Pipeline rust removal equipment is a tool or device specifically used to remove rust, oxide layers and other impurities on the surface or inside of pipelines. In the fields of industrial production, construction, petrochemical industry, etc., during the pipeline production process, after the pipeline is formed and placed for a long time, rust will be generated on its surface or inside due to oxidation, corrosion, etc. These rusts will not only affect the appearance of the pipeline, but also reduce the strength and service life of the pipeline. Therefore, pipeline rust removal equipment is needed to remove rust from the pipeline to ensure the normal operation and safe use of the pipeline.

[0003] Usually, when removing rust inside the pipeline, a wire brush is driven by a motor to rotate at high speed. The wire brush contacts the pipeline surface, and the rust is removed by the friction of the wire. This equipment is suitable for removing rust on the outer surface of the pipeline, with simple operation and low cost. However, during the pipeline production and storage process, there are often bent pipes and rust is formed inside the bent pipes, and the rust at this position needs to be treated. Since the pipeline is in a bent state, the traditional rust removal method has the following deficiencies:

[0004] First, the inside of the pipeline has a curvature. When the traditional motor drives the wire brush to rotate at high speed, it is difficult to extend into the curvature, resulting in poor rust removal effect, inconvenient viewing of the field of vision, and easy omission, reducing the rust removal effect;

[0005] Second, the traditional rust removal method of driving the wire brush by a motor requires manual alignment during rust removal operation inside the bent pipe, which is cumbersome, time-consuming and laborious. In view of the deficiencies of the prior art, the present invention provides a metal pipeline inner wall grinding device to solve the above problems. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a metal pipeline inner wall grinding device, which uses a flexible shaft to connect the rust removal grinding disc, can flexibly enter the inside of the bent pipe, and its side fits the pipe wall and rotates with the flexible shaft to effectively remove rust, solving the problem of rust removal inside the bent pipe; at the same time, the drive unit realizes the coordinated operation of the high rotation speed of the rust removal grinding disc and the low rotation of the rotating frame and the metal pipe to be processed, with high automation, reducing manual alignment operation, improving the rust removal efficiency and quality, and saving time and manpower.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A metal pipeline inner wall grinding device, comprising a rust removal device base, a main support frame, a rotating frame, a positioning unit, an arc-shaped frame, a flexible shaft, a rust removal grinding disc and a drive unit;

[0008] The base of the rust removal device is set at the target position;

[0009] The main support frame is set on the base of the rust removal device;

[0010] The rotating frame is rotatably connected to the main support frame;

[0011] The positioning unit is set on the rotating frame and is used for positioning the metal pipe to be processed;

[0012] The arc-shaped frame is set on the base of the rust removal device;

[0013] The flexible shaft is rotatably connected to the arc-shaped frame;

[0014] The rust removal grinding disc is set on the flexible shaft;

[0015] The driving unit is set on the base of the rust removal device and is used for driving the flexible shaft and the rotating frame to rotate.

[0016] Preferably, a main shaft is provided on the rotating frame, the main shaft is rotatably connected to the main support frame, and the driving unit includes:

[0017] A driving motor, which is set on the base of the rust removal device and its output end is connected to the flexible shaft;

[0018] A worm gear, which is set on the main shaft;

[0019] A worm, which is set on the main support frame and meshes with the worm gear;

[0020] A speed reduction assembly, which is set between the driving motor and the rotating shaft of the worm.

[0021] Preferably, the speed reduction assembly includes:

[0022] A first gear, which is set on the output end of the driving motor;

[0023] A third gear, which is set on the rotating shaft of the worm;

[0024] A second gear, which is set above the base of the rust removal device, and the second gear meshes with the first gear and the third gear respectively.

[0025] Preferably, a support plate for supporting the worm is provided on the main support frame, and a positioning frame for supporting the second gear is provided on the base of the rust removal device.

[0026] Preferably, a number of groups of shaft seats for supporting the flexible shaft are provided on the arc-shaped frame.

[0027] Preferably, a mounting seat is provided on the flexible shaft, a clamping block is provided on the mounting seat, the rust-removing grinding disc is movably clamped on the mounting seat, a clamping groove for fitting with the clamping block is formed on the rust-removing grinding disc, and a positioning screw is threadedly connected between the rust-removing grinding disc and the mounting seat.

[0028] Preferably, a plurality of groups of flexible rust-removing scraping heads are provided on the side surface of the rust-removing grinding disc.

[0029] Preferably, the flexible rust-removing scraping head comprises:

[0030] An elastic part, which is arranged on the rust-removing grinding disc;

[0031] A rust-removing head, which is arranged on the elastic part and fits with the inner wall of the metal pipe to be processed.

[0032] Preferably, the positioning unit comprises:

[0033] A fixed seat, which is arranged on the rotating frame;

[0034] A clamping seat, which is movably connected to the rotating frame;

[0035] A driving structure, which is arranged on the rotating frame and used to drive the clamping seat to move, and the metal pipe to be processed is movably clamped between the fixed seat and the clamping seat.

[0036] Preferably, rubber blocks are provided on both the fixed seat and the clamping seat, and the driving structure comprises:

[0037] A lead screw, which is threadedly connected to the rotating frame, and the lead screw is rotatably connected to the clamping seat;

[0038] A lateral support rod, which is arranged on the clamping seat and slidably connected to the rotating frame.

[0039] The present invention discloses a device for grinding the inner wall of a metal pipe, and the beneficial effects thereof are as follows:

[0040] 1. For the device for grinding the inner wall of a metal pipe, a flexible shaft is used to connect the rust-removing grinding disc. The flexible shaft has good flexibility and can be bent within a certain range, so that it can conveniently enter the inside of the bent pipe. The side surface of the rust-removing grinding disc fits with the inner wall of the metal pipe to be processed. As the flexible shaft rotates, rust on various positions of the inner wall of the bent pipe can be effectively removed, solving the problem that it is difficult to deal with the rust inside the bent pipe by traditional methods and improving the rust-removing effect.

[0041] 2. The inner wall grinding device for metal pipes realizes the high-speed rotation of the rust removal grinding disc and the low-speed rotation of the rotating frame and the metal pipe to be processed through the design of the driving unit. The driving motor directly drives the flexible shaft to rotate, so that the rust removal grinding disc rotates to remove rust from the inner wall of the metal pipe to be processed. At the same time, the rotating frame is driven to rotate through the speed reduction component, so that the metal pipe to be processed continuously adjusts the rust removal position to achieve all-round rust removal. The whole operation process has a high degree of automation, reduces the complexity of manual alignment operation, greatly improves the rust removal efficiency, and saves time and manpower.

[0042] 3. The inner wall grinding device for metal pipes is provided with a positioning unit, and the metal pipe to be processed is movably clamped between the fixed seat and the clamping seat. By rotating the screw rod, the clamping seat can be pushed to move, and the metal pipe to be processed is clamped and positioned in cooperation with the fixed seat. The clamping seat is provided with a lateral support rod, so that the clamping seat is stable in force and ensures good positioning effect. At the same time, rubber blocks are provided on both the fixed seat and the clamping seat, which increases the friction force at the clamping contact position and further improves the clamping stability, facilitating the rust removal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0044] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 It is a top view of the present invention;

[0046] Figure 3 It is a schematic diagram of the structure of the driving unit of the present invention;

[0047] Figure 4 It is a schematic diagram of the structure of the positioning unit of the present invention;

[0048] Figure 5 It is a connection diagram of the flexible shaft of the present invention;

[0049] Figure 6 It is an installation diagram of the rust removal grinding disc of the present invention;

[0050] Figure 7 It is a disassembly diagram of the rust removal grinding disc of the present invention;

[0051] Figure 8 It is a schematic diagram of the structure of the flexible rust removal scraper head of the present invention.

[0052] In the figure: 1. Rust removal device base; 2. Main support frame; 21. Support plate; 3. Rotating frame; 31. Main shaft; 4. Positioning unit; 41. Fixed seat; 42. Clamping seat; 43. Lead screw; 44. Lateral support rod; 45. Rubber block; 5. Arc-shaped frame; 51. Shaft seat; 6. Flexible shaft; 61. Mounting seat; 62. Block; 63. Positioning screw; 7. Rust removal grinding disc; 71. Card slot; 8. Driving unit; 81. Driving motor; 82. First gear; 83. Second gear; 831. Positioning frame; 84. Worm; 85. Third gear; 86. Worm gear; 9. Flexible rust removal scraper; 91. Elastic part; 92. Rust removal head; 10. Metal pipe to be processed. Detailed implementation mode

[0053] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0054] By providing a metal pipe inner wall grinding device in the embodiments of the present application, the problem of the traditional rust removal method of driving a wire brush to rotate at high speed by a motor is solved. Since the inside of the pipe has a curvature, it is difficult for the wire brush to extend into the curvature of the elbow pipe, resulting in poor rust removal effect and easy omission. At the same time, manual alignment operation is required, which is not only cumbersome but also time-consuming and laborious.

[0055] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation modes.

[0056] Embodiment 1:

[0057] An embodiment of the present invention discloses a metal pipe inner wall grinding device. As shown in the attached drawings, it includes a rust removal device base 1, a main support frame 2, a rotating frame 3, a positioning unit 4, an arc-shaped frame 5, a flexible shaft 6, a rust removal grinding disc 7 and a driving unit 8; Figure 1-8 The rust removal device base 1 is arranged at the target position; the rust removal device base 1 is the support foundation of the whole device, providing a stable installation platform for other components and ensuring the stability of the device during the working process.

[0058] The main support frame 2 is arranged on the rust removal device base 1; the function of the main support frame 2 is to support components such as the rotating frame 3. The main support frame 2 is provided with a support plate 21 for supporting the worm 84. The support plate 21 can enhance the stability of the worm 84 during rotation, reduce shaking and ensure the accuracy of transmission.

[0059] The main support frame 2 is arranged on the rust removal device base 1; the function of the main support frame 2 is to support components such as the rotating frame 3. The main support frame 2 is provided with a support plate 21 for supporting the worm 84. The support plate 21 can enhance the stability of the worm 84 during rotation, reduce shaking and ensure the accuracy of transmission.

[0060] The rotating frame 3 is rotatably connected to the main support frame 2; the rotating frame 3 is rotatably connected to the main support frame 2, and a main shaft 31 is provided thereon. The main shaft 31 is rotatably connected to the main support frame 2. The rotation of the rotating frame 3 can adjust the position of the metal pipe 10 to be processed, facilitating the rust removal disc 7 to enter the interior of the metal pipe 10 to be processed for rust removal operation.

[0061] The positioning unit 4 is arranged on the rotating frame 3 and is used for positioning the metal pipe 10 to be processed;

[0062] The arc-shaped frame 5 is arranged on the rust removal device base 1; the arc-shaped frame 5 is arranged on the rust removal device base 1, and its shape is adapted to the movement track of the flexible shaft 6. A plurality of groups of shaft seats 51 for supporting the flexible shaft 6 are provided on the arc-shaped frame 5. The shaft seats 51 can reduce the friction of the flexible shaft 6 during rotation, ensure the smooth rotation of the flexible shaft 6, and improve the stability of the flexible shaft 6 at the same time.

[0063] The flexible shaft 6 is rotatably connected to the arc-shaped frame 5; the flexible shaft 6 is rotatably connected to the arc-shaped frame 5, and it has good flexibility, can bend within a certain range, and can rotate by itself, facilitating entry into the interior of the metal pipe.

[0064] The rust removal disc 7 is arranged on the flexible shaft 6; the rust removal disc 7 is the main execution component for rust removal operation. When the flexible shaft 6 rotates, it drives the rust removal disc 7 to rotate. By using the side of the rust removal disc 7 to fit against the inner wall of the metal pipe 10 to be processed, the rust on the inner wall can be effectively removed.

[0065] The drive unit 8 is arranged on the rust removal device base 1 and is used for driving the flexible shaft 6 and the rotating frame 3 to rotate. The drive unit 8 is used to drive the flexible shaft 6 and the rotating frame 3 to rotate. Therefore, when the flexible shaft 6 rotates, the rotating frame 3 rotates synchronously and drives the metal pipe 10 to be processed to move, so that the metal pipe 10 to be processed contacts and moves with the rust removal disc 7. The rust removal disc 7 rotates continuously, and the metal pipe 10 to be processed continuously adjusts the rust removal position, realizing the all-round rust removal of the interior of the metal pipe 10 to be processed.

[0066] A main shaft 31 is provided on the rotating frame 3. The main shaft 31 is rotatably connected to the main support frame 2. The main shaft 31 is used to provide support and limit for the rotating frame 3 to ensure the stable rotation operation of the rotating frame 3. The drive unit 8 includes:

[0067] A drive motor 81, which is arranged on the rust removal device base 1 and whose output end is connected to the flexible shaft 6;

[0068] A worm gear 86, which is arranged on the main shaft 31;

[0069] A worm 84, which is arranged on the main support frame 2 and meshes with the worm gear 86;

[0070] A speed reduction assembly, which is arranged between the rotating shafts of the drive motor 81 and the worm 84.

[0071] The driving unit 8 is structurally compact and easy to operate. The driving motor 81 directly drives the flexible shaft 6 to rotate, causing the flexible shaft 6 to drive the rust removal grinding disc 7 to rotate, thereby using the rotation of the rust removal grinding disc 7 to perform inner wall processing on the metal pipe 10 to be processed.

[0072] The driving unit 8 simultaneously drives the worm 84 to rotate through a speed reduction assembly. The worm 84 drives the worm wheel 86 to rotate, the worm wheel 86 drives the main shaft 31 to rotate, the main shaft 31 drives the rotating frame 3 to rotate, and the rotating frame 3 drives the positioning unit 4 and the metal pipe 10 to be processed to move, causing the metal pipe 10 to be processed to continuously move along the rust removal grinding disc 7. Furthermore, the rust removal grinding disc 7 performs rust removal operations on various positions of the metal pipe 10 to be processed.

[0073] The speed reduction assembly includes:

[0074] A first gear 82, arranged at the output end of the driving motor 81;

[0075] A third gear 85, arranged on the rotating shaft of the worm 84;

[0076] A second gear 83, arranged above the rust removal device base 1. The second gear 83 meshes with the first gear 82 and the third gear 85 respectively.

[0077] The speed reduction assembly is arranged between the output shaft of the driving motor 81 and the rotating shaft of the worm 84, and is used to reduce the rotational speed of the driving motor 81 and increase the output torque. When the driving motor 81 operates, it drives the flexible shaft 6 to rotate and also drives the first gear 82 to rotate. The first gear 82 drives the second gear 83 to rotate, the second gear 83 drives the third gear 85 to rotate, the third gear 85 drives the worm 84 to rotate, the worm 84 drives the worm wheel 86 to rotate, the worm wheel 86 drives the main shaft 31 to rotate, the main shaft 31 drives the rotating frame 3 to rotate, and the rotating frame 3 drives the positioning unit 4 and the metal pipe 10 to be processed to rotate. Therefore, high-speed rotation of the rust removal grinding disc 7 and low-speed rotation of the rotating frame 3 and the metal pipe 10 to be processed are achieved, ensuring that each part of the inner wall of the metal pipe 10 to be processed has a long grinding time and ensuring good grinding effect.

[0078] A positioning frame 831 for supporting the second gear 83 is provided on the rust removal device base 1. The positioning frame 831 supports the second gear 83 to ensure stable force on the second gear 83.

[0079] An installation seat 61 is provided on the flexible shaft 6. A clamping block 62 is provided on the installation seat 61. The rust removal grinding disc 7 is movably clamped on the installation seat 61. A clamping groove 71 for fitting with the clamping block 62 is provided on the rust removal grinding disc 7. A positioning screw 63 is threadedly connected between the rust removal grinding disc 7 and the installation seat 61.

[0080] Between the mounting base 61 and the rust-removing grinding disc 7, through the design of the clamping block 62 and the clamping groove 71, the assembly is convenient. Therefore, the disassembly and assembly of the rust-removing grinding disc 7 are convenient, which facilitates replacing the model of the rust-removing grinding disc 7 according to different metal pipes 10 to be processed, or replacing the damaged rust-removing grinding disc 7.

[0081] When installing the rust-removing grinding disc 7, directly snap the rust-removing grinding disc 7 and the mounting base 61. After complete snap connection, the clamping block 62 is fitted with the clamping groove 71. At this time, tighten the positioning screw 63 inside the rust-removing grinding disc 7 and the mounting base 61.

[0082] Embodiment 2:

[0083] The embodiment of the present invention discloses a grinding device for the inner wall of a metal pipeline. According to the attached Figure 1-8 As shown, it includes a rust-removing device base 1, a main support frame 2, a rotating frame 3, a positioning unit 4, an arc-shaped frame 5, a flexible shaft 6, a rust-removing grinding disc 7, and a driving unit 8;

[0084] The rust-removing device base 1 is arranged at the target position;

[0085] The main support frame 2 is arranged on the rust-removing device base 1;

[0086] The rotating frame 3 is rotatably connected to the main support frame 2;

[0087] The positioning unit 4 is arranged on the rotating frame 3 and is used for positioning the metal pipe 10 to be processed;

[0088] The arc-shaped frame 5 is arranged on the rust-removing device base 1;

[0089] The flexible shaft 6 is rotatably connected to the arc-shaped frame 5;

[0090] The rust-removing grinding disc 7 is arranged on the flexible shaft 6;

[0091] The driving unit 8 is arranged on the rust-removing device base 1 and is used for driving the flexible shaft 6 and the rotating frame 3 to rotate.

[0092] On the side of the rust-removing grinding disc 7, there are multiple groups of flexible rust-removing scraping heads 9. The flexible rust-removing scraping heads 9 include:

[0093] An elastic part 91, arranged on the rust-removing grinding disc 7;

[0094] A rust-removing head 92, arranged on the elastic part 91 and fitting with the inner wall of the metal pipe 10 to be processed. When the rust-removing head 92 rotates forward and backward, its contact part with the metal pipe 10 to be processed is different, thereby achieving different rust-removing effects.

[0095] Through the design of multiple sets of flexible rust-removing scrapers 9, the multiple sets of flexible rust-removing scrapers 9 can directly contact the inner wall of the metal pipe 10 to be processed. When the rust-removing grinding disc 7 rotates, it drives the multiple sets of flexible rust-removing scrapers 9 to rotate, thereby achieving a good rust-removing effect on the inner wall of the metal pipe 10 to be processed. The rust-removing head 92 is used to scrape the rust layer on the surface of the metal pipe 10 to be processed, and the elastic part 91 ensures that the rust-removing head 92 deforms. During the rotation process, under the action of the elastic force and centrifugal force of the elastic part 91 itself, it is ensured that the rust-removing head 92 maintains a positive pressure with the inside of the metal pipe 10 to be processed, and at the same time, the device can also be applied to metal pipes 10 to be processed with different pipe diameters;

[0096] When the driving unit 8 controls the rust-removing grinding disc 7 to rotate forward, the metal pipe 10 to be processed rotates counterclockwise. The rust-removing head 92 of the flexible rust-removing scraper 9 rust-removes the inner wall of the metal pipe 10 to be processed in a frictional form. When the driving unit 8 controls the rust-removing grinding disc 7 to rotate backward, the metal pipe 10 to be processed rotates clockwise. The rust-removing head 92 of the flexible rust-removing scraper 9 performs secondary rust-removing on the inner wall of the metal pipe 10 to be processed in a scraping form, so as to ensure a good rust-removing effect on the inside of the metal pipe 10 to be processed.

[0097] Embodiment 3:

[0098] This embodiment of the present invention discloses a device for grinding the inner wall of a metal pipe. According to the attached Figure 1-8 As shown, it includes a rust-removing device base 1, a main support frame 2, a rotating frame 3, a positioning unit 4, an arc-shaped frame 5, a flexible shaft 6, a rust-removing grinding disc 7, and a driving unit 8;

[0099] The rust-removing device base 1 is arranged at the target position;

[0100] The main support frame 2 is arranged on the rust-removing device base 1;

[0101] The rotating frame 3 is rotatably connected to the main support frame 2;

[0102] The positioning unit 4 is arranged on the rotating frame 3 and is used to position the metal pipe 10 to be processed;

[0103] The arc-shaped frame 5 is arranged on the rust-removing device base 1;

[0104] The flexible shaft 6 is rotatably connected to the arc-shaped frame 5;

[0105] The rust-removing grinding disc 7 is arranged on the flexible shaft 6;

[0106] The driving unit 8 is arranged on the rust-removing device base 1 and is used to drive the flexible shaft 6 and the rotating frame 3 to rotate.

[0107] The positioning unit 4 includes:

[0108] A fixed seat 41, arranged on the rotating frame 3;

[0109] The clamping seat 42 is movably connected to the rotating frame 3;

[0110] The driving structure is arranged on the rotating frame 3 and is used to drive the clamping seat 42 to move. The metal pipe 10 to be processed is movably clamped between the fixed seat 41 and the clamping seat 42.

[0111] Rubber blocks 45 are provided on both the fixed seat 41 and the clamping seat 42. The driving structure includes:

[0112] The lead screw 43 is threadedly connected to the rotating frame 3, and the lead screw 43 is rotatably connected to the clamping seat 42;

[0113] The lateral support rod 44 is arranged on the clamping seat 42 and is slidably connected to the rotating frame 3.

[0114] With the design of the positioning unit 4, the metal pipe 10 to be processed is convenient to be fixed and limited on the rotating frame 3, so that the metal pipe 10 to be processed is convenient to carry out rust removal operation;

[0115] When it is necessary to position the metal pipe 10 to be processed, the operation is simple and convenient, saving time and effort. First, place the metal pipe 10 to be processed between the fixed seat 41 and the clamping seat 42. At this time, rotate the lead screw 43, so that the lead screw 43 moves spirally along the rotating frame 3 and pushes the clamping seat 42 to move. The clamping seat 42 finally drives and cooperates with the fixed seat 41 to clamp and position the metal pipe 10 to be processed.

[0116] When the clamping seat 42 moves, the clamping seat 42 drives the lateral support rod 44 to slide along the rotating frame 3. The lateral support rod 44 makes the force on the clamping seat 42 stable, so as to ensure that the positioning unit 4 has a good clamping and positioning effect on the metal pipe 10 to be processed. During the clamping process of the fixed seat 41 and the clamping seat 42, through the design of the rubber block 45, it is ensured that the friction force at the clamping contact positions on both sides of the metal pipe 10 to be processed is large and the clamping stability is good.

[0117] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0118] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A metal pipe inner wall grinding device, characterized in that: include: A rust removal device base (1) is arranged at a target position; A main support frame (2) is arranged on the rust removal device base (1); A rotating frame (3) rotatably connected to the main support frame (2); A positioning unit (4), which is arranged on the rotating frame (3) and is used to position the metal pipe (10) to be processed; An arc-shaped frame (5) is arranged on the rust removal device base (1); A flexible shaft (6) rotatably connected to the arc-shaped frame (5); A rust-removing grinding disc (7) is arranged on the flexible shaft (6); A driving unit (8) is arranged on the rust removal device base (1) and is used to drive the flexible shaft (6) and the rotating frame (3) to rotate.

2. A metal pipe inner wall grinding device according to claim 1, characterized in that: The rotating frame (3) is provided with a main shaft (31), and the main shaft (31) is rotatably connected to the main support frame (2). The driving unit (8) comprises: A driving motor (81) is arranged on the rust removal device base (1) and its output end is connected to the flexible shaft (6); A worm gear (86) is disposed on the main shaft (31); A worm (84) is disposed on the main support frame (2) and meshes with a worm wheel (86); A speed reduction assembly is arranged between the driving motor (81) and the rotating shaft of the worm (84).

3. A metal pipe inner wall grinding device according to claim 2, characterized in that: The deceleration assembly comprises: A first gear (82) is arranged at the output end of the driving motor (81); a third gear (85), arranged on the rotating shaft of the worm (84); The second gear (83) is arranged above the rust removal device base (1), and the second gear (83) is meshed with the first gear (82) and the third gear (85) respectively.

4. A metal pipe inner wall grinding device according to claim 3, characterized in that: The main support frame (2) is provided with a support plate (21) for supporting the worm (84), and the rust removal device base (1) is provided with a positioning frame (831) for supporting the second gear (83).

5. A metal pipe inner wall grinding device according to claim 1, characterized in that: The arc-shaped frame (5) is provided with a plurality of groups of shaft seats (51) for supporting the flexible shaft (6).

6. A metal pipe inner wall grinding device according to claim 1, characterized in that: The flexible shaft (6) is provided with a mounting seat (61), the mounting seat (61) is provided with a clamping block (62), the rust-removing grinding disc (7) is movably clamped on the mounting seat (61), the rust-removing grinding disc (7) is provided with a clamping groove (71) engaged with the clamping block (62), and a positioning screw (63) is threadedly connected between the rust-removing grinding disc (7) and the mounting seat (61).

7. A metal pipe inner wall grinding device according to claim 1, characterized in that: A plurality of groups of flexible rust-removing scraping heads (9) are arranged on the side of the rust-removing grinding disc (7).

8. A metal pipe inner wall grinding device according to claim 7, characterized in that: The flexible rust removal scraper (9) comprises: An elastic portion (91) is arranged on the rust-removing grinding disc (7); The rust removal head (92) is arranged on the elastic part (91) and is in contact with the inner wall of the metal pipe (10) to be processed.

9. A metal pipe inner wall grinding device according to claim 1, characterized in that: The positioning unit (4) comprises: A fixed seat (41) is arranged on the rotating frame (3); A clamping seat (42) movably connected to the rotating frame (3); The driving structure is arranged on the rotating frame (3) and is used to drive the clamping seat (42) to move, and the metal pipe (10) to be processed is movably clamped between the fixing seat (41) and the clamping seat (42).

10. A metal pipe inner wall grinding device according to claim 9, characterized in that: The fixing seat (41) and the clamping seat (42) are both provided with a rubber block (45), and the driving structure comprises: A screw rod (43) is threadedly connected to the rotating frame (3), and the screw rod (43) is rotatably connected to the clamping seat (42); The lateral support rod (44) is arranged on the clamping seat (42) and is slidably connected to the rotating frame (3).

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