Pipeline inner wall weld joint polishing device

Abstract

The utility model relates to the technical field of pipeline inner wall weld joint polishing devices, and discloses a pipeline inner wall weld joint polishing device which comprises a polishing rod arranged at the driving end of a motor, a lengthening rod connected in a sliding mode inside the polishing rod, a groove fixedly formed in the upper portion of the lengthening rod, and sliding grooves fixedly formed in the two sides of the groove. The lengthening rod slides in the grinding rod; the fixing set comprises a sleeve fixedly arranged on one side of the polishing rod, a rolling groove is fixedly formed in the upper portion of the sleeve, through holes are further fixedly formed in the two sides of the rolling groove, and the pressing assembly and the fastening assembly which are arranged on one side of the telescopic set are matched with each other through the through holes, so that the stretching position of the stretching rod can be fixed; and the telescopic set comprises a grinding disc and a telescopic assembly which is fixedly arranged on the side, away from the grinding rod, of the lengthening rod, spring shells are evenly arranged in the grinding disc, the telescopic assembly is used for being connected with the outer portion of the grinding disc to complete grinding, carrying and operation of operators are facilitated, grinding work of the inner wall welding seam of the pipeline can be conducted anytime and anywhere, and the device is suitable for grinding operation of some small pipelines.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe inner wall weld grinding device, specifically a pipe inner wall weld grinding device. Background Technology

[0002] When the length of the pipe is insufficient, multiple pipes need to be welded together to meet different usage requirements. However, the weld seam on the inner wall of the pipe usually has many burrs and poor flatness, which will affect the subsequent use of the pipe. Therefore, it is necessary to grind the weld seam on the inner wall of the pipe.

[0003] According to the prior art (publication number: CN115070527A), a cylinder is included; a set of rollers are evenly distributed around the circumference of the cylinder surface; the rollers protrude from the cylinder surface, and one of the rollers is driven by a motor; a connecting column is fixedly connected to the middle of the cylinder; a turntable is rotatably connected to the outside of the connecting column, and the turntable is driven by a motor; a set of grinding blocks are evenly distributed around the circumference of the turntable surface.

[0004] This invention enables the grinding block to grind the weld seam on the inner wall of the pipe, thereby removing burrs from the weld seam, improving the smoothness of the weld seam, and facilitating the subsequent use of the pipe.

[0005] However, while the existing technology allows for quick disassembly and assembly when parts need to be replaced due to malfunctions, reducing equipment maintenance time, it still has some shortcomings: it is not convenient to adjust the extension position of the extension rod and the grinding rod cannot fit tightly against the weld seam on the inner wall of the pipe. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for grinding weld seams on the inner wall of pipes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a pipe inner wall weld grinding device, comprising a telescopic assembly including a grinding rod arranged at the motor drive end, an internally slidably connected extension rod, a groove fixedly arranged above the extension rod, and sliding grooves fixedly arranged on both sides of the groove, allowing the extension rod to slide inside the grinding rod; a fixed assembly including a sleeve fixedly arranged on one side of the grinding rod, a rolling groove fixedly arranged above the sleeve, and through holes fixedly provided on both sides of the rolling groove, for a pressing component and a fastening component arranged on one side of the telescopic assembly to cooperate with each other, so that the extension rod can be fixed in the telescopic position; and a telescopic assembly including a grinding disc fixedly arranged on the side of the extension rod away from the grinding rod, with spring housings evenly arranged inside the grinding disc for connecting the telescopic assembly outside the grinding disc to complete the grinding.

[0008] As a further description of the above technical solution:

[0009] The pressing assembly includes: a fixing block, which is fixedly arranged at the upper end of the through hole and rotatably connected to an eccentric wheel in the middle; and a handle, which is fixedly arranged around the eccentric wheel for manual pressing.

[0010] As a further description of the above technical solution:

[0011] The fastening assembly includes: a second spring, one end of which is fixedly arranged below the fixing block and passes through a through hole; and a pressure block, which is fixedly arranged at the end of the second spring away from the fixing block and is used to cooperate with the pressing assembly to fix the extension rod.

[0012] As a further description of the above technical solution:

[0013] The eccentric wheel and the fixed block are eccentrically rotated. When the handle is turned, the eccentric wheel rotates and presses the pressure block, making the pressure block fit into the groove, so that the groove can be fixed and expand. When the handle is released, the eccentric wheel releases the pressure on the pressure block and the spring returns to its original position, allowing the pressure block to slide on the groove.

[0014] As a further description of the above technical solution:

[0015] The grinding rod has a protruding groove inside for engaging with a recessed groove, and sliding grooves are provided on both sides of the protruding groove inside the grinding rod for engaging with the sliding groove.

[0016] As a further description of the above technical solution:

[0017] The telescopic assembly includes: a spring, disposed inside a spring housing; and a telescopic rod, slidably connected inside the spring housing, with one end connected to the spring and the other end away from the spring having a grinding head.

[0018] As a further description of the above technical solution:

[0019] Four sets of telescopic components are evenly arranged inside the grinding disc. When the grinding head is squeezed, the telescopic rod slides inward to push the spring housing to compress. When the grinding head is pulled out of the pipe, the spring housing resets and pushes the telescopic rod to reset the grinding head.

[0020] This utility model has the following beneficial effects:

[0021] 1. The pressing assembly consists of a fixed block, a handle, and an eccentric wheel rotatably connected to the center of the fixed block. By manually turning the handle, the eccentric wheel and fixed block can be rotated, thereby achieving the pressing action on the pressing block. This structure is simple, reliable, and easy to operate, and can quickly fix and release the extension position of the pull rod.

[0022] 2. The retractable function of the grinding head ensures a tight fit between the inner wall of the pipe and the weld, effectively removing burrs and uneven parts at the weld, improving the smoothness and finish of the weld, thereby enhancing the overall quality and service life of the pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a pipe inner wall weld grinding device proposed in this utility model.

[0024] Figure 2 This is a schematic diagram of the grinding assembly of a pipe inner wall weld grinding device proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the fixing assembly of a pipe inner wall weld grinding device proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the sleeve of a pipe inner wall weld grinding device proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the telescopic assembly of a pipe inner wall weld grinding device proposed in this utility model.

[0028] Legend: 1. Grinding assembly; 11. Grinding head; 12. Telescopic rod; 13. Spring housing; 14. Spring 1; 15. Grinding disc; 2. Fixing assembly; 21. Rolling groove; 22. Handle; 23. Through hole; 24. Pressure block; 25. Eccentric wheel; 26. Spring 2; 27. Fixing block; 28. Sleeve; 3. Telescopic assembly; 31. Groove; 32. Slide groove; 33. Grinding rod; 34. Extension rod; 4. Motor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: Figures 1 to 5As shown, this embodiment provides a pipe inner wall weld grinding device, including: a telescopic assembly 3, including a grinding rod 33 arranged at the drive end of a motor 4, with an internally slidably connected extension rod 34, a groove 31 fixedly arranged above the extension rod 34, and sliding grooves 32 fixedly arranged on both sides of the groove 31, so that the extension rod 34 slides inside the grinding rod 33; a fixed assembly 2, including a sleeve 28 fixedly arranged on one side of the grinding rod 33, and a rolling groove 21 fixedly arranged above the sleeve 28, with through holes 23 fixedly arranged on both sides of the rolling groove 21, for a pressing component and a fastening component arranged on one side of the telescopic assembly 3 to cooperate with each other, so that the extension rod 34 can be fixed in a telescopic position; the telescopic assembly 3 includes a grinding disc 15, fixedly arranged on the side of the extension rod 34 away from the grinding rod 33, and spring housings 13 are evenly arranged inside the grinding disc 15 for connecting the telescopic assembly 3 outside the grinding disc 15 to complete the grinding.

[0031] In this embodiment, the grinding group 1, the fixing group 2, and the telescopic group 3 constitute the pipe inner wall weld grinding device involved in this application, realizing a pipe inner wall weld grinding device. This device can be used for any pipe that needs to have its inner wall weld ground. This application does not limit the specific pipe type.

[0032] In this embodiment, the guide structure inside the slide groove 32 and the grinding rod 33 cooperate with each other to ensure that the extension rod 34 will not deviate or get stuck during the extension and retraction process, thus ensuring the stability and accuracy of the extension and retraction action.

[0033] In this embodiment, the spring housing 13 inside the grinding disc 15 enables the telescopic assembly 3 to adaptively adjust according to the surface shape of the object being ground. Regardless of whether the surface of the object being ground is flat, has a certain curvature, or is uneven, the telescopic assembly 3 can fit tightly against the surface under the action of the spring housing 13 to perform grinding, thereby improving the uniformity and quality of grinding.

[0034] It should be noted that the buffering effect of the spring housing 13 plays an important protective role for the relevant components during the grinding process. When the grinding pressure suddenly increases or there are protrusions on the surface of the object being ground, the spring housing 13 can buffer these impact forces and prevent rigid collisions between the telescopic assembly 3 and the grinding disc 15, thereby reducing the risk of damage to the components due to excessive wear, deformation, etc.

[0035] Specifically, the pressing component includes: a fixing block 27, which is fixedly arranged at the upper end of the through hole 23 and rotatably connected to the eccentric wheel 25 in the middle; and a handle 22, which is fixedly arranged around the eccentric wheel 25 for manual pressing.

[0036] In this embodiment, when the handle 22 is held and rotated, the eccentric wheel 25 can be easily driven to rotate, thereby starting the entire pressing assembly's workflow and controlling the extension position of the extension rod 34. No complicated operating skills or additional power equipment are required, making the operation simple and intuitive.

[0037] Specifically, the fastening components include: a second spring 26, one end of which is fixedly arranged below the fixing block 27 and passes through the through hole 23; and a pressure block 24, which is fixedly arranged at the end of the second spring 26 away from the fixing block 27, and is used to cooperate with the pressing component to fix the extension rod 34.

[0038] As a preferred implementation, when the pressing component is not under pressure, the second spring 26 is in a naturally extended state, providing a certain initial position support for the pressing block 24, so that a certain distance is maintained between the pressing block 24 and the extension rod 34, so that the extension rod 34 can extend and retract freely.

[0039] Example 2: Based on Example 1, in order to further improve the fixed extension and retraction of the extension rod 34, an eccentric circle is arranged on the eccentric wheel 25 for compression and fixation;

[0040] Specifically, the eccentric wheel 25 and the fixed block 27 are eccentrically rotated. When the handle 22 is turned, the eccentric wheel 25 rotates and presses the pressure block 24, so that the pressure block 24 fits into the groove 31, allowing the groove 31 to be fixed and extendable. When the handle 22 is released, the eccentric wheel 25 releases the pressure on the pressure block 24 and the spring 26 returns to its original position, allowing the pressure block 24 to slide on the groove 31.

[0041] It should be noted that during the rotation of the eccentric structure, the distance from the edge of the eccentric wheel 25 to the rotation point of the fixed block 27 will change continuously. When a certain part of the eccentric wheel 25 rotates to the position corresponding to the pressure block 24, it will exert a squeezing effect on the pressure block 24.

[0042] Specifically, the grinding rod 33 has a protrusion inside for engaging with the groove 31, and sliding grooves are provided on both sides of the protrusion inside the grinding rod 33 for engaging with the sliding groove 32.

[0043] In a preferred embodiment, when the extension rod 34 slides and extends within the grinding rod 33, the protrusion engages with the groove 31. This engagement primarily serves as a guide and limiter. On one hand, the protrusion restricts the movement of the groove 31 perpendicular to the extension direction, ensuring that the extension rod 34 can only extend and retract linearly along the axial direction of the grinding rod 33, preventing lateral deviation or wobbling, thus guaranteeing the accuracy and stability of the extension and retraction action.

[0044] Example 3: Based on Example 2, in order to enable the stretching rod 34 and the grinding rod 33 to work synchronously, a fixing group 2 is arranged on the grinding rod 33;

[0045] Specifically, the telescopic assembly consists of three parts: a spring 14, which is located inside the spring housing 13; and a telescopic rod 12, which is slidably connected inside the spring housing 13, with one end connected to the spring 14 and the other end away from the spring 14 having a grinding head 11.

[0046] It should be noted that the telescopic rod 12 is slidably connected inside the spring housing 13, with one end connected to the spring 14. This sliding connection allows the telescopic rod 12 to slide axially relative to the spring housing 13. When the grinding head 11 is pushed or pulled by an external force, the telescopic rod 12 will slide accordingly within the spring housing 13 according to the direction and magnitude of the external force.

[0047] Specifically, four sets of telescopic components are evenly arranged inside the grinding disc 15. When the grinding head 11 is squeezed, the telescopic rod 12 slides inward to push the spring housing 13 to compress. When the grinding head 11 is pulled out of the pipe, the spring housing 13 returns to its original position and pushes the telescopic rod 12 to reset the grinding head 11.

[0048] In this embodiment, during the reset process of the spring housing 13, it will push the telescopic rod 12 to slide in the opposite direction of the original inward sliding, thereby driving the grinding head 11 back to its original position and completing the reset action.

[0049] In use, when the worker grinds the inner wall of the pipe, the output end of the motor 4 drives the rotation of the telescopic assembly 3. The grinding assembly 1 is connected to the telescopic assembly 3. The rotation of the telescopic assembly 3 drives the rotation of the grinding assembly 1. With the cooperation of the grinding head 11, the weld seam of the inner wall of the pipe is ground. When the worker grinds pipes of different diameters, when the grinding disc 15 is inserted into a pipe with a diameter smaller than the grinding disc 15, the grinding head 11 is squeezed by the inner wall of the pipe. The spring housing 13 is fixed on the grinding disc 15. One end of the spring 14 is connected to the telescopic rod 12, and the other end of the spring 14 is connected to the spring housing 13. The spring 14 is inside the spring housing 13. The telescopic rod 12 is movably connected between the grinding head 11 and the spring 14. The pressure on the grinding head 11 is transmitted to the spring 14 through the telescopic rod 12. The spring 14 contracts inside the spring housing 13. In this way, the grinding disc 15 can be inserted into the inside of the pipe. Under the elastic force of spring 14, the grinding head 11 can fit against the inner wall of the pipe and then grind the weld. When the worker grinds welds of different depths on the inner wall of the pipe, he turns the handle 22 to rotate the eccentric wheel 25. When the side of the eccentric wheel 25 with the shorter eccentricity rotates to the pressure block 24, the fixing block 27 is fixed on the sleeve 28. Spring 26 passes through the through hole 23 and connects to the pressure block 24. The tension of spring 26 causes the pressure block 24 to be naturally placed in the rolling groove 21, without giving the pressure block 24 any pressure. 4. Under pressure, the extension rod 34 is pulled. The extension rod 34 has a groove 31, and the grinding rod 33 has a protrusion corresponding to the groove 31. With their cooperation, the extension rod 34 will extend or shorten. After adjusting the length of the extension rod 34, the eccentric wheel 25 is rotated. When the side of the eccentric wheel 25 with the larger eccentricity rotates to the pressure block 24, the eccentric wheel 25 applies downward pressure to the pressure block 24, and the pressure block 24 will be tightly stuck in the groove 31, thereby fixing the extension rod 34.

[0050] It should be noted that all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device that can be controlled by a computer or other means. The detailed description of known functions and known components is omitted in the specific embodiments disclosed herein. In order to ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for grinding weld seams on the inner wall of a pipe, characterized in that: include: The telescopic assembly (3) includes a grinding rod (33) arranged at the drive end of the motor (4), an extension rod (34) slidably connected inside, a groove (31) is fixedly arranged above the extension rod (34), and sliding grooves (32) are fixedly arranged on both sides of the groove (31) so that the extension rod (34) slides inside the grinding rod (33); The fixed assembly (2) includes a sleeve (28) fixedly arranged on one side of the grinding rod (33), and a rolling groove (21) fixedly arranged above the sleeve (28). The two sides of the rolling groove (21) are also fixedly provided with through holes (23) for the pressing component and fastening component arranged on one side of the telescopic assembly (3) to cooperate with each other so that the extension rod (34) can be fixed in the telescopic position. The telescopic assembly (3) includes a grinding disc (15), which is fixedly arranged on the side of the extension rod (34) away from the grinding rod (33). Spring housings (13) are evenly arranged inside the grinding disc (15) to connect the telescopic assembly (3) outside the grinding disc (15) to complete the grinding.

2. The device for grinding weld seams on the inner wall of a pipe according to claim 1, characterized in that: The pressing component includes: A fixing block (27) is fixedly arranged at the upper end of the through hole (23), and the eccentric wheel (25) is rotatably connected in the middle. The handle (22) is fixedly arranged on the periphery of the eccentric wheel (25) for manual pressing.

3. The device for grinding weld seams on the inner wall of a pipe according to claim 2, characterized in that: The fastening assembly includes: Spring 2 (26) has one end fixedly arranged below the fixing block (27) and passes through the through hole (23); The pressure block (24) is fixedly arranged at the end of the spring (26) away from the fixing block (27) and is used to cooperate with the pressing assembly to fix the extension rod (34).

4. The device for grinding weld seams on the inner wall of a pipe according to claim 3, characterized in that: The eccentric wheel (25) and the fixed block (27) are eccentrically rotated. When the handle (22) is turned, the eccentric wheel (25) rotates and presses the pressure block (24), so that the pressure block (24) fits into the groove (31) and the groove (31) can be fixed and extended. When the handle (22) is released, the eccentric wheel (25) releases the pressure on the pressure block (24) and the second spring (26) returns to its original position, so that the pressure block (24) slides on the groove (31).

5. The device for grinding weld seams on the inner wall of a pipe according to claim 4, characterized in that: The grinding rod (33) has a protrusion groove inside for engaging with the groove (31), and sliding grooves are provided on both sides of the protrusion groove inside the grinding rod (33) for engaging with the sliding groove (32).

6. The device for grinding weld seams on the inner wall of a pipe according to claim 5, characterized in that: The telescopic assembly (3) includes: Spring 1 (14) is disposed inside the spring housing (13); The telescopic rod (12) is slidably connected inside the spring housing (13), with one end connected to the first spring (14) and the other end away from the first spring (14) provided with a grinding head (11).

7. The device for grinding weld seams on the inner wall of a pipe according to claim 6, characterized in that: The grinding disc (15) has four sets of telescopic components (3) evenly arranged inside. When the grinding head (11) is squeezed, the telescopic rod (12) slides inward to push the spring housing (13) to compress. When the grinding head (11) is pulled out of the pipe, the spring housing (13) resets and pushes the telescopic rod (12) to reset the grinding head (11).

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