High-adaptability pipe fitting inner wall grinding equipment and grinding method

Abstract

The invention relates to the technical field of steel pipe polishing, in particular to high-adaptability pipe fitting inner wall polishing equipment and a polishing method.The high-adaptability pipe fitting inner wall polishing equipment comprises a supporting table and a storage table, a fixing plate and a bearing table are fixed to the supporting table, and a telescopic plate is slidably mounted in the storage table; the multiple rotating sleeves are rotationally installed on the bearing table and distributed at equal intervals, a pushing polishing mechanism is arranged in each rotating sleeve, and a plurality of polishing rollers distributed at equal intervals in the circumferential direction are connected to the pushing polishing mechanisms; the follow-up supporting mechanism is arranged on the rotating sleeve and connected with the pushing and grinding mechanism, the pushing and grinding mechanism can firstly control the multiple grinding rollers to move in the direction away from each other till the grinding rollers are attached to the inner wall of the steel pipe, then the follow-up supporting mechanism is controlled to execute the inner supporting and limiting action on the inner wall of the steel pipe, and meanwhile, the follow-up supporting mechanism is driven by the pushing and grinding mechanism to rotate. The polishing strength of the polishing roller to the steel pipe is adjusted according to the inner diameter of the steel pipe to guarantee the polishing stability of the steel pipe.

Description

Technical Field

[0001] This invention relates to the field of steel pipe grinding technology, specifically a grinding equipment and method for grinding the inner wall of highly adaptable pipe fittings. Background Technology

[0002] As important engineering components and industrial raw materials, steel pipes usually need to undergo strict surface treatment before being put into use, among which grinding is one of the most crucial processes.

[0003] The main purpose of grinding is to remove defects such as oxide layer, rust, welding slag, and burrs from the surface of steel pipes, improve surface smoothness, and ensure that it meets the requirements of anti-corrosion treatment, precision assembly, or special use. Grinding can be divided into external wall grinding and internal wall grinding.

[0004] For internal wall grinding, mechanical grinding is usually carried out by mounting a fixed-size grinding head on a long rod. However, this method is only suitable for steel pipes of a single specification. If the inner diameter of the steel pipe changes, the corresponding grinding head needs to be replaced, resulting in low grinding adaptability and efficiency.

[0005] To address this, a radially extendable grinding head device can be used to adapt to pipes of different diameters. However, in order to ensure that the grinding head has sufficient grinding strength, an elastic support method is usually used to control the grinding head to fit tightly against the inner wall of the steel pipe. This can easily lead to a lack of stable support during the grinding process, causing the steel pipe to vibrate and deform under the grinding action. Furthermore, the grinding head cannot automatically adjust the grinding surface, which can easily lead to excessive wear of the grinding head in certain areas. This not only seriously affects the uniformity of grinding but also significantly shortens the tool's service life. Summary of the Invention

[0006] The purpose of this invention is to provide a highly adaptable equipment and method for grinding the inner wall of pipe fittings, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A highly adaptable pipe fitting inner wall grinding device, comprising:

[0009] A support platform and a storage platform are provided. A fixed plate and a bearing platform are fixed on the support platform, and a telescopic plate is slidably installed inside the storage platform.

[0010] Also includes:

[0011] Rotating sleeves are rotatably mounted on the support platform and are distributed at equal intervals. A top-pushing grinding mechanism is provided inside the rotating sleeves, and multiple grinding rollers distributed at equal intervals around the circumference are connected to the top-pushing grinding mechanism.

[0012] A follow-up support mechanism is mounted on the rotating sleeve and connected to the top-pushing grinding mechanism. The follow-up support mechanism can move when the top-pushing grinding mechanism controls the grinding roller to abut against the inner wall of the steel pipe, so as to perform an internal support and limiting action on the steel pipe.

[0013] As a further embodiment of the present invention: the top-pushing grinding mechanism includes a plurality of support rings fixed on the rotating sleeve and distributed at equal intervals, a plurality of second hinge rods distributed at equal intervals around the circumference are hinged on the support rings, and a second movable plate is hinged to the end of the second hinge rod, and the second movable plate is rotatably connected to the grinding roller.

[0014] It also includes a pushing component and an elastic component disposed on the rotating sleeve for adjusting the spacing between the grinding rollers.

[0015] As a further embodiment of the present invention: the pushing component includes a groove formed on the second hinge rod, a second sliding groove is formed on the outer circumferential wall of the rotating sleeve, a movable ring that slides axially inside the rotating sleeve and is slidably engaged with the second sliding groove, and a limiting post that is fixed on the movable ring and slidably engaged with the groove.

[0016] As a further embodiment of the present invention: the elastic component includes a cylinder fixed to the end of the rotating sleeve, a push rod slidably installed inside the rotating sleeve and fixedly connected to the telescopic end of the cylinder, and a spring built into the rotating sleeve, the two ends of the spring respectively abutting against the push rod and the movable ring.

[0017] As a further embodiment of the present invention: the follow-up support mechanism includes a first sliding groove formed on the outer circumference of the rotating sleeve, a movable sleeve that slides through the first sliding groove and is fixedly connected to the push rod on the axial direction of the rotating sleeve, two sets of first hinge rods that are circumferentially distributed and hinged on the movable sleeve, and a support frame that is hinged to the first hinge rods is fixed on the movable ring.

[0018] As a further embodiment of the present invention: a first movable plate is hinged to the first hinge rod, a universal support wheel is rotatably mounted on the first movable plate, and a limiting rod that abuts against the first hinge rod is fixed on the support frame.

[0019] As a further embodiment of the present invention: a motor is fixed on the fixed plate, and a synchronous pulley connected to the output shaft of the motor is rotatably mounted on the fixed plate. A toothed belt connected to the rotating sleeve is sleeved on the synchronous pulley.

[0020] As a further embodiment of the present invention: a bearing bracket is fixed on the telescopic plate, and a plurality of screws are threadedly connected to the bearing bracket in an equidistant manner, and a clamping block that cooperates with the steel pipe is fixed at the end of the screw.

[0021] As a further embodiment of the present invention: a lower support plate for supporting the steel pipe is slidably installed on the bearing bracket.

[0022] A method for grinding the inner wall of highly adaptable pipe fittings includes the following steps:

[0023] Step 1: Insert the steel pipe to be ground between the grinding rollers;

[0024] Step 2: Under the action of the top-pushing grinding mechanism, control multiple grinding rollers to move in a direction away from each other until the grinding rollers abut against the inner wall of the steel pipe;

[0025] Step 3: The jacking and grinding mechanism continues to move, driving the follow-up support mechanism to perform internal support actions on the steel pipe;

[0026] Step 4: The motor starts working and drives the rotating sleeve to rotate through the synchronous pulley and toothed belt, so as to drive the grinding roller to perform grinding action on the inner wall of the steel pipe through the top-pushing grinding mechanism.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention achieves step-by-step adjustment of the position of the grinding roller and the universal support wheel through the cooperation of the top-pushing grinding mechanism and the follow-up support mechanism, thereby realizing adaptive matching for steel pipes with different inner diameters. When the grinding roller contacts the pipe wall, the top-pushing grinding mechanism adjusts the position of the universal support wheel through the follow-up support mechanism, and can automatically adjust the grinding pressure through the compression of the spring. The larger the inner diameter of the steel pipe, the greater the spring compression, and the greater the grinding pressure provided. This pressure adaptive mechanism ensures that the steel pipe with large wall thickness obtains sufficient grinding intensity.

[0028] By supporting the inner wall of the pipe with the grinding roller and the universal support wheel, vibration and workpiece deformation during the grinding process can be effectively suppressed, ensuring high precision in grinding. Furthermore, under the action of the parallelogram structure, the universal support wheel and the grinding roller always maintain a constant radial direction, thus providing stable support inside the pipe.

[0029] As the steel pipe moves axially along the rotating sleeve, the grinding roller experiences rolling friction with the inner wall of the steel pipe, causing the grinding roller to rotate slowly around the axis. This continuously changes the contact surface between the grinding roller and the steel pipe, ensuring more uniform wear of the grinding roller and always performing grinding operations with the optimal contact surface. This effectively avoids excessive wear or reduced grinding efficiency caused by localized continuous friction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of one embodiment of a high-adaptability pipe inner wall grinding equipment.

[0031] Figure 2 This is a structural schematic diagram from another angle in one embodiment of a high-adaptability pipe inner wall grinding equipment.

[0032] Figure 3 This is a schematic diagram showing the connection relationship between the bearing bracket, clamping block, bearing platform, part of the top-pushing grinding mechanism, and part of the follow-up support mechanism in one embodiment of a high-adaptability pipe inner wall grinding equipment.

[0033] Figure 4 This is a schematic diagram of the structure of a platform, a partial pushing grinding mechanism, and a partial follow-up support mechanism in one embodiment of a highly adaptable pipe inner wall grinding equipment.

[0034] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0035] Figure 6 This is a schematic diagram of the structure of a rotating sleeve, a partial pushing grinding mechanism, and a partial follow-up support mechanism in one embodiment of a highly adaptable pipe inner wall grinding equipment.

[0036] Figure 7 A schematic cross-sectional view of the rotating sleeve and push rod in one embodiment of a high-adaptability pipe inner wall grinding equipment.

[0037] Figure 8 This is a schematic diagram of the follow-up support mechanism and the movable ring in one embodiment of a high-adaptability pipe inner wall grinding equipment.

[0038] Figure 9 This is a schematic diagram of the structure of part of the top-pushing grinding mechanism and the follow-up support mechanism in one embodiment of a high-adaptability pipe inner wall grinding equipment.

[0039] Figure 10 This is a schematic diagram of the structure of a portion of the top-pushing grinding mechanism and support frame in one embodiment of a highly adaptable pipe inner wall grinding equipment.

[0040] In the diagram: 1. Support platform; 2. Fixed plate; 3. Storage platform; 4. Telescopic plate; 5. Bearing bracket; 6. Clamping block; 7. Motor; 8. Toothed belt; 9. Bearing platform; 10. Rotating sleeve; 1001. First slide groove; 1002. Second slide groove; 11. Cylinder; 12. Push rod; 13. Movable sleeve; 14. First hinge rod; 15. First movable plate; 16. Universal support wheel; 17. Support ring; 18. Second hinge rod; 1801. Slot; 19. Second movable plate; 20. Grinding roller; 21. Movable ring; 2101. Limiting post; 22. Support frame; 2201. Limiting rod; 23. Spring; 24. Lower support plate. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0043] Please see Figures 1-10 In this embodiment of the invention, a highly adaptable pipe fitting inner wall grinding device includes:

[0044] Support platform 1 and storage platform 3, with fixed plate 2 and bearing platform 9 fixed on support platform 1, and telescopic plate 4 slidably installed in storage platform 3;

[0045] Also includes:

[0046] Rotary sleeve 10 is rotatably mounted on the bearing platform 9 and is distributed at equal intervals. A top-pushing grinding mechanism is provided inside the rotating sleeve 10, and multiple grinding rollers 20 distributed at equal intervals around the circumference are connected to the top-pushing grinding mechanism.

[0047] A follow-up support mechanism is mounted on the rotating sleeve 10 and connected to the top-pushing grinding mechanism. The follow-up support mechanism can move when the top-pushing grinding mechanism controls the grinding roller 20 to abut against the inner wall of the steel pipe, so as to perform an internal support and limiting action on the steel pipe.

[0048] Specifically, when grinding the inner wall of a steel pipe, the spacing of the grinding rollers 20 needs to be adjusted because the size of the steel pipe to be ground may vary each time. Initially, the spacing between the multiple grinding rollers 20 is at its minimum. At this point, the steel pipe can be fitted onto the grinding rollers 20. Under the action of the pushing grinding mechanism, the multiple grinding rollers 20 are controlled to move away from each other until the grinding rollers 20 are in contact with the inner wall of the steel pipe. At this point, the grinding rollers 20 stop moving, while the pushing grinding mechanism continues to move, controlling the follow-up support mechanism to move until the follow-up support mechanism performs a supporting action on the inner wall of the steel pipe. This ensures... To ensure stability during the steel pipe grinding process, after the support is completed, the rotating sleeve 10 rotates and the grinding roller 20 grinds the inner wall of the steel pipe. If the inner diameter of the steel pipe is large, it usually means that the thickness is greater. When the follow-up support mechanism supports the steel pipe, the grinding roller 20 can also adaptively adjust the grinding force according to the inner diameter of the steel pipe to ensure the best grinding effect. When the grinding roller 20 moves along the axial direction of the steel pipe, the grinding roller 20 rotates itself to adjust the contact surface between the grinding roller 20 and the steel pipe, thereby ensuring that the grinding roller 20 does not reduce the grinding effect due to always grinding through the same position.

[0049] Please see Figures 1-3 The telescopic plate 4 is fixed with a bearing bracket 5, and the bearing bracket 5 is threaded with a plurality of screws that are equally distributed. The end of the screw is fixed with a clamping block 6 that cooperates with the steel pipe. The bearing bracket 5 is slidably installed with a lower support plate 24 for supporting the steel pipe.

[0050] In detail, the lower support plate 24 is located below the clamping block 6, and a steel pipe can be placed between the lower support plate 24 and the clamping block 6. A hydraulic cylinder for adjusting the height of the lower support plate 24 can be installed on the bearing bracket 5.

[0051] In the initial state, the distance between the clamping block 6 and the lower support plate 24 is at its maximum and is greater than the outer diameter of the steel pipe. When the steel pipe is fitted onto the grinding roller 20, the grinding roller 20 is controlled to fit against the inner wall of the steel pipe under the action of the top-pushing grinding mechanism. In order to prevent the steel pipe from rotating synchronously with the grinding roller 20, the steel pipe needs to be clamped and fixed. At this time, the screw is manually turned and the clamping block 6 is driven to move towards the steel pipe. At the same time, under the action of the hydraulic cylinder, the lower support plate 24 is pushed to move towards the steel pipe until the clamping block 6 and the lower support plate 24 are both in contact with the outer wall of the steel pipe, thereby clamping and fixing the steel pipe.

[0052] Subsequently, the rotating sleeve 10 rotates and the grinding roller 20 grinds the inner wall of the steel pipe. The storage platform 3 is equipped with an oil cooling pipe and a hydraulic cylinder connected to the telescopic plate 4. The oil cooling pipe can continuously pump cooling oil to the outer wall of the steel pipe to cool the steel pipe during the grinding process. At the same time, under the action of the hydraulic cylinder, the telescopic plate 4 is controlled to move away from the support platform 1, so that the grinding roller 20 slides relative to the steel pipe along the axial direction of the steel pipe until the grinding roller 20 has finished grinding the entire inner wall of the steel pipe. At this time, the clamping block 6 and the lower support plate 24 can be controlled to reset, and the ground steel pipe can be taken out.

[0053] A motor 7 is fixed on the fixed plate 2, and a synchronous pulley connected to the output shaft of the motor 7 is rotatably mounted on the fixed plate 2. A toothed belt 8 connected to the rotating sleeve 10 is sleeved on the synchronous pulley.

[0054] Please see Figures 4-10 The top-pushing grinding mechanism includes a plurality of support rings 17 fixed to the rotating sleeve 10 and equidistantly distributed, and a plurality of second hinge rods 18 equidistantly distributed circumferentially connected to the support rings 17. A second movable plate 19 is hinged to the end of each second hinge rod 18, and the second movable plate 19 is rotatably connected to the grinding roller 20. It also includes a pushing component and an elastic component disposed on the rotating sleeve 10 for adjusting the spacing between the grinding rollers 20. The pushing component includes a groove 1801 formed on the second hinge rod 18. The rotating sleeve 10... A second sliding groove 1002 is formed on the outer circumference of the rotating sleeve 10. A movable ring 21 that slides axially inside the rotating sleeve 10 and is slidably fitted with the second sliding groove 1002 is provided. A limiting post 2101 that slides slidably fits with the slot 1801 is fixed on the movable ring 21. The elastic component includes a cylinder 11 fixed to the end of the rotating sleeve 10. A push rod 12 that is fixedly connected to the telescopic end of the cylinder 11 is slidably installed inside the rotating sleeve 10. A spring 23 is built into the rotating sleeve 10. The two ends of the spring 23 abut against the push rod 12 and the movable ring 21, respectively.

[0055] Please see Figures 4-10 The follow-up support mechanism includes a first sliding groove 1001 formed on the outer circumference of the rotating sleeve 10. The rotating sleeve 10 has a movable sleeve 13 that slides through the first sliding groove 1001 and is fixedly connected to the push rod 12. Two sets of first hinge rods 14 are hinged on the movable sleeve 13 and are distributed equidistantly around the circumference. A support frame 22 that is hinged to the first hinge rods 14 is fixed on the movable ring 21. A first movable plate 15 is hinged on the first hinge rods 14. A universal support wheel 16 is rotatably mounted on the first movable plate 15. A limiting rod 2201 that abuts against the first hinge rods 14 is fixed on the support frame 22.

[0056] Please see Figure 5 , Figure 6 Furthermore, there are two sets of first hinge rods 14 and second hinge rods 18 distributed along the axial direction of the rotating sleeve 10, and both are equidistant from each other on the circumference. Therefore, the two first hinge rods 14 combine to form a parallelogram structure, and the two second hinge rods 18 also combine to form a parallelogram structure. This ensures that when the first hinge rods 14 and the second hinge rods 18 rotate around the hinge point, the first movable plate 15 and the second movable plate 19 always maintain a fixed radial posture, that is, the first movable plate 15 and the second movable plate 19 always remain parallel to the rotating sleeve 10. The grinding roller 20 is rotatably mounted on the second movable plate 19, and the axis of rotation of the grinding roller 20 is perpendicular to the axial direction of the rotating sleeve 10.

[0057] Please see Figure 7 When grinding steel pipes, since the inner diameter of the steel pipes being ground is different, the distance between the grinding rollers 20 needs to be adjusted in order to match steel pipes with different inner diameters. In the initial state, under the action of the cylinder 11, the push rod 12 is located at the end of its stroke away from the support ring 17, so that the distance between the push rod 12 and the movable ring 21 is maximized. Under the action of the pull force of the support frame 22, the angle between the first hinge rod 14 and the rotating sleeve 10 is minimized. In this state, the first hinge rod 14 and the limit rod 2201 are in abutting state to ensure that the first hinge rod 14 no longer swings towards the rotating sleeve 10. The first hinge rod 14 will control the multiple universal support wheels 16 to be in the direction of mutual approach at the end of their stroke through the first movable plate 15. The extension of the spring 23 in its natural state is greater than the maximum distance between the push rod 12 and the movable ring 21. Therefore, the spring 23 is in a pre-compressed state and always provides the movable ring 21 with a thrust to move away from the push rod 12.

[0058] The push rod 12 is pulled by the support frame 22 so that the movable ring 21 is also located at the end of the stroke away from the support ring 17. With the cooperation of the limit post 2101 and the slot 1801, the included angle between the second hinge rod 18 and the rotating sleeve 10 is minimized, so that the distance between the multiple grinding rollers 20 is minimized by the second movable plate 19. In this state, the distance between the grinding roller 20 and the rotating sleeve 10 is greater than the distance between the universal support wheel 16 and the rotating sleeve 10.

[0059] When grinding is required on the inner wall of the steel pipe, the steel pipe can be inserted between the grinding rollers 20, with the grinding rollers 20 positioned at the end of the steel pipe. At this time, under the action of the cylinder 11, the push rod 12 is pushed towards the support ring 17, thereby pushing the movable ring 21 to move through the spring 23. The movable ring 21 will control the second hinge rod 18 to rotate around the hinge point and move away from the rotating sleeve 10 through the cooperation of the limit post 2101 and the slot 1801. The second hinge rod 18 will also drive the second movable plate 19 to move, and in the parallelogram structure Under the action of the second movable plate 19, the second movable plate 19 is kept parallel to the rotating sleeve 10. Under the action of the second movable plate 19, the multiple grinding rollers 20 move in a direction away from each other until the grinding rollers 20 abut against the inner wall of the steel pipe. During this process, the push rod 12 will also drive the movable sleeve 13 to move synchronously with the movable ring 21. That is, the distance between the movable sleeve 13 and the movable ring 21 will not change. Therefore, under the action of the support frame 22, the deflection angle of the first hinge rod 14 is kept unchanged, so that the distance between the multiple universal support wheels 16 remains unchanged.

[0060] At this point, the grinding roller 20 stops moving, causing the second movable plate 19 and the second hinge rod 18 to be in a fixed state. This locks the movable ring 21 in the axial position of the rotating sleeve 10 through the slot 1801 and the limiting post 2101. The cylinder 11 continues to push the push rod 12 and compress the spring 23. At the same time, the push rod 12 drives the movable sleeve 13 to move towards the movable ring 21. Under the action of the support frame 22, the first hinge rod 14 rotates around the hinge point. The first hinge rod 14 will drive the universal support wheel 16 to move through the first movable plate 15. Similarly, under the action of the parallelogram structure, the universal support wheel 16 always faces the inner wall of the steel pipe until the universal support wheel 16 abuts against the inner wall of the steel pipe. In this way, under the combined action of the universal support wheel 16 and the grinding roller 20, the steel pipe can be internally supported, thereby ensuring the stability of subsequent grinding.

[0061] Among them, the inner diameter of the steel pipe is the largest, and its wall thickness is usually also larger. Therefore, a greater grinding intensity is required. When the grinding roller 20 abuts against the inner wall of the steel pipe, if the inner diameter of the steel pipe is larger, it means that the distance between the movable sleeve 13 and the movable ring 21 is the smallest, and the compression of the spring 23 is greater. Under the action of the spring 23, the force of the grinding roller 20 on the inner wall of the steel pipe increases. In this way, the grinding intensity of the grinding roller 20 can be adaptively adjusted according to the inner diameter of the steel pipe.

[0062] When both the grinding roller 20 and the universal support wheel 16 are in contact with the inner wall of the steel pipe, the motor 7 works and drives the rotating sleeve 10 to rotate through the synchronous pulley and toothed belt 8. This causes the grinding roller 20 and the universal support wheel 16 to move around the rotating sleeve 10. Under the action of the grinding roller 20, the steel pipe is ground in the circumferential direction. The universal support wheel 16 and the steel pipe are subjected to rolling friction, so it will not affect the grinding.

[0063] During the grinding process, the telescopic plate 4 will move away from the support platform 1. As the clamping block 6 and the lower support plate 24 clamp the steel pipe, the steel pipe will move slowly with the telescopic plate 4, that is, move along the axial direction of the rotating sleeve 10. During this process, the grinding roller 20 rolls against the inner wall of the steel pipe, causing the grinding roller 20 to rotate slowly around the axis of rotation, so as to continuously change the contact surface between the grinding roller 20 and the steel pipe, thereby ensuring that the wear of the grinding roller 20 is more uniform and that the grinding operation is always performed with the best contact surface. This effectively avoids the problem of excessive wear or reduced grinding efficiency caused by local continuous friction. At the same time, the uniform wear of the grinding roller 20 ensures consistent grinding force.

[0064] After grinding is completed, the telescopic plate 4 drives the steel pipe to just disengage from the grinding roller 20. The cylinder 11 controls the push rod 12 to reset. Under the reset action of the spring 23, the movable ring 21 is reset accordingly. The universal support wheel 16 and the grinding roller 20 are reset through the first hinge rod 14 and the second hinge rod 18. By repeating the above steps, the inner wall of steel pipes with different inner diameters can be ground.

[0065] A method for grinding the inner wall of highly adaptable pipe fittings includes the following steps:

[0066] Step 1: Insert the steel pipe to be ground into the grinding roller 20;

[0067] Step 2: Under the action of the top-pushing grinding mechanism, control the multiple grinding rollers 20 to move in a direction away from each other until the grinding rollers 20 come into contact with the inner wall of the steel pipe;

[0068] Step 3: The jacking and grinding mechanism continues to move, driving the follow-up support mechanism to perform internal support actions on the steel pipe;

[0069] Step 4: The motor 7 operates and drives the rotating sleeve 10 to rotate via the synchronous pulley and toothed belt 8, so as to drive the grinding roller 20 to perform grinding action on the inner wall of the steel pipe through the top-pushing grinding mechanism.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A highly adaptable pipe fitting inner wall grinding device, comprising: A support platform and a storage platform are provided. A fixed plate and a bearing platform are fixed on the support platform, and a telescopic plate is slidably installed inside the storage platform. Its characteristic is that it further includes: Rotating sleeves are rotatably mounted on the support platform and are distributed at equal intervals. A top-pushing grinding mechanism is provided inside the rotating sleeves, and multiple grinding rollers distributed at equal intervals around the circumference are connected to the top-pushing grinding mechanism. A follow-up support mechanism is mounted on the rotating sleeve and connected to the top-pushing grinding mechanism. The follow-up support mechanism can move when the top-pushing grinding mechanism controls the grinding roller to abut against the inner wall of the steel pipe, so as to perform an internal support and limiting action on the steel pipe.

2. The highly adaptable pipe fitting inner wall grinding equipment according to claim 1, characterized in that, The top-pushing grinding mechanism includes multiple support rings fixed on the rotating sleeve and distributed at equal intervals. Multiple second hinge rods distributed at equal intervals around the circumference are hinged to the support rings. A second movable plate is hinged to the end of each second hinge rod. The second movable plate is rotatably connected to the grinding roller. It also includes a pushing component and an elastic component disposed on the rotating sleeve for adjusting the spacing between the grinding rollers.

3. The highly adaptable pipe fitting inner wall grinding equipment according to claim 2, characterized in that, The pushing assembly includes a slot formed on the second hinge rod, a second sliding groove formed on the outer circumference of the rotating sleeve, a movable ring that slides axially inside the rotating sleeve and is slidably engaged with the second sliding groove, and a limiting post that is fixed on the movable ring and is slidably engaged with the slot.

4. The highly adaptable pipe fitting inner wall grinding equipment according to claim 3, characterized in that, The elastic component includes a cylinder fixed to the end of the rotating sleeve, a push rod slidably installed inside the rotating sleeve and fixedly connected to the telescopic end of the cylinder, and a spring inside the rotating sleeve, the two ends of the spring abutting against the push rod and the movable ring respectively.

5. The highly adaptable pipe fitting inner wall grinding equipment according to claim 4, characterized in that, The follow-up support mechanism includes a first sliding groove formed on the outer circumference of the rotating sleeve. The rotating sleeve has a movable sleeve that slides through the first sliding groove and is fixedly connected to the push rod. Two sets of first hinge rods are hinged on the movable sleeve and are distributed equidistantly around the circumference. A support frame that is hinged to the first hinge rods is fixed on the movable ring.

6. The highly adaptable pipe fitting inner wall grinding equipment according to claim 5, characterized in that, A first movable plate is hinged to the first hinge rod, and a universal support wheel is rotatably mounted on the first movable plate. A limiting rod that abuts against the first hinge rod is fixed on the support frame.

7. The highly adaptable pipe fitting inner wall grinding equipment according to claim 1, characterized in that, A motor is fixed on the fixed plate, and a synchronous pulley connected to the output shaft of the motor is rotatably mounted on the fixed plate. A toothed belt connected to the rotating sleeve is sleeved on the synchronous pulley.

8. The highly adaptable pipe fitting inner wall grinding equipment according to claim 1, characterized in that, A bearing bracket is fixed on the telescopic plate, and multiple screws are threaded onto the bearing bracket in an equidistant manner. A clamping block that cooperates with the steel pipe is fixed to the end of each screw.

9. The highly adaptable pipe fitting inner wall grinding equipment according to claim 8, characterized in that, The support bracket is slidably mounted with a lower support plate for supporting the steel pipe.

10. A method for grinding the inner wall of a high-adaptability pipe fitting, using the high-adaptability pipe fitting inner wall grinding equipment as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Insert the steel pipe to be ground between the grinding rollers; Step 2: Under the action of the top-pushing grinding mechanism, control multiple grinding rollers to move in a direction away from each other until the grinding rollers abut against the inner wall of the steel pipe; Step 3: The jacking and grinding mechanism continues to move, driving the follow-up support mechanism to perform internal support actions on the steel pipe; Step 4: The motor starts working and drives the rotating sleeve to rotate through the synchronous pulley and toothed belt, so as to drive the grinding roller to perform grinding action on the inner wall of the steel pipe through the top-pushing grinding mechanism.

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