Mpp power cable protection pipe processing device

Abstract

The application discloses a kind of MPP power cable protection pipe processing device, it is related to pipe processing technical field, including workbench, reversing rotary seat, pneumatic clamping seat, first vertical plate, second vertical plate, abrasive belt sander and circumferential polishing assembly, reversing rotary seat is used to clamp and overturn pipe material, abrasive belt sander on the first vertical plate can rotate around pipe material axis to polish end face, the revolution of the rack of second vertical plate drives circumferential polishing assembly, the inner and outer grinding wheels independently adjustable in component are equipped, rack revolution is driven grinding wheel reverse rotation by bevel gear transmission, to polish the inner and outer cylindrical surface of pipe material end simultaneously, the present application is integrated design, realizes the one-time clamping collaborative polishing of pipe end face, inner surface and outer surface, and through the independent adjusting mechanism of grinding wheel, it is suitable for pipe material of different diameter and wall thickness, solve the problem that traditional equipment process is complicated, and the problem of poor universality is solved, polishing efficiency and quality are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, and in particular to a processing device for MPP power cable protection pipes. Background Technology

[0002] In the actual construction of MPP power cable protection pipes, it is often necessary to connect multiple sections of pipe through methods such as hot fusion butt welding. However, after the pipe is cut, the end cross-section often produces burrs or unevenness. At the same time, the inner and outer circular surfaces near the end may also have problems such as roughness, unevenness, or burrs due to the cutting process or material shrinkage. If fusion is performed directly, these defects will seriously affect the sealing performance, mechanical strength, and electrical protection performance of the interface, and may even damage the inserted cable. In order to improve the fusion strength of the pipe, the inner and outer circular surfaces of the pipe end will be ground to increase the roughness and then adhesive will be sprayed to add clamps or internal supports. Therefore, it is necessary to use a grinder to grind the inner and outer circular surfaces of the pipe end and its adjacent area before fusion.

[0003] Currently, grinding operations in this stage mostly rely on traditional grinding wheel equipment, which has the following two major drawbacks: First, most traditional grinding devices have limited functions and can usually only grind one of the outer diameter, inner diameter, or end face of the pipe. To complete the comprehensive treatment of a pipe end, that is, to grind the inner diameter, outer diameter, and end face at the same time, it is necessary to perform multiple clamping, disassembly, and conversion between different equipment or workstations, which is cumbersome and greatly reduces processing efficiency.

[0004] Secondly, while some grinding equipment on the market with centering and clamping functions can adapt to different pipe diameters within a certain range through adjustment, their adjustment range is usually quite limited. More importantly, such devices generally lack an effective adaptation mechanism for changes in pipe wall thickness. MPP power cable protection pipes vary greatly in diameter and wall thickness depending on the application scenario. Traditional grinding devices often use grinding heads with fixed spacing or linkage adjustment, which cannot achieve independent radial adjustment of the inner and outer grinding units for the same pipe. This means that when switching to pipes with significant differences in diameter or wall thickness, the device either cannot effectively fit the grinding surface or requires replacing the entire grinding assembly or making complex mechanical adjustments, resulting in poor versatility. Summary of the Invention

[0005] One objective of this invention is to provide an MPP power cable protection pipe processing device. This invention can integrate and efficiently complete the joint grinding of the inner and outer circles and end faces of the pipe ends, and has a wide range and high flexibility adjustment capability to adapt to the processing needs of pipes with different diameters and wall thicknesses.

[0006] An MPP power cable protection pipe processing device according to an embodiment of the present invention includes a workbench, a reversing rotary seat fixedly installed in the middle of the workbench, and a pneumatic clamp for pipe clamping fixedly installed at the output end of the top of the reversing rotary seat, and further includes:

[0007] The first and second vertical plates are symmetrically slidably mounted on the workbench, and the first and second vertical plates can move towards each other and away from each other synchronously;

[0008] A belt sander mounted on the first vertical plate is rotated. After the belt sander is started, it can rotate around the axis of the pipe.

[0009] Rotate the frame mounted on the second vertical plate;

[0010] A circumferential grinding assembly is mounted on the frame for grinding the inner and outer circular surfaces of both ends of a pipe. The circumferential grinding assembly is suitable for various pipes with large differences in diameter and wall thickness. The circumferential grinding assembly includes a support plate and grinding wheels. Multiple support plates are fixedly mounted on the frame in a circular array. Two grinding wheels are mounted on each support plate. The two grinding wheels can be independently moved and adjusted along the radial direction of the pipe to be used for pipes with different diameters and wall thicknesses. The rotational driving force of the two grinding wheels comes from the rotation of the frame and the rotation directions are opposite.

[0011] Preferably, the reversing rotating seat has the function of rotating 180 degrees in both directions and can be locked when rotating 90 degrees. The telescopic end of the pneumatic clamp is symmetrically equipped with two sets of pipe clamps. Rollers are rotatably embedded in the clamping contact surface of the pipe clamps to limit the rotation of the pipe without interfering with the axial movement of the pipe.

[0012] Preferably, two main lead screws are rotatably mounted on the worktable, and the first and second vertical plates are threadedly connected to the two main lead screws respectively. The ends of the two main lead screws are fixedly connected, and the two lead screws have the same pitch and opposite directions.

[0013] Preferably, the input shaft of the belt sander is radially arranged with the pipe and an extension shaft is fixedly installed thereon. An annular groove is provided on the first vertical plate and a shaft seat is slidably installed in the annular groove. The extension shaft and the shaft seat are rotatably assembled. A planetary gear is fixedly installed at the end of the extension shaft. A large gear ring that meshes with the planetary gear is fixedly installed on the first vertical plate.

[0014] Preferably, two adjusting screws and a long spline rod are rotatably installed inside the support plate. Two sliding blocks are independently meshed on the two adjusting screws. The sliding blocks are longitudinally slidably installed with respect to the support plate. Two grinding wheels are rotatably installed on the two sliding blocks. Two meshing bevel gears are rotatably installed on the sliding blocks. One bevel gear is splinedly connected to the long spline rod, and the other bevel gear is fixedly connected to the shaft of the grinding wheel. The position of the grinding wheel is adjusted without interfering with the rotation of the grinding wheel.

[0015] Preferably, a pressure sensor is integrated between the shaft of the grinding wheel and the slide.

[0016] Preferably, a driven bevel gear is fixedly installed at the radial end of the long spline rod, and an active bevel gear disc that meshes with multiple driven bevel gears is fixedly installed on the second vertical plate, so as to form a bevel gear transmission mechanism that enables multiple sets of grinding wheels to grind synchronously.

[0017] Preferably, driven helical gears are fixedly installed at the ends of both adjusting screws, and the two driven helical gears are staggered. A short spline rod is rotatably installed on the support plate, and a driving helical gear is splined on the short spline rod. The driving helical gear is located between the two driven helical gears. A small cylinder for driving the driving helical gear to move along the axis of the short spline rod is fixedly installed on the support plate. The engagement state of the driving helical gear and the two driven helical gears is switched by the extension and retraction of the small cylinder.

[0018] The beneficial effects of this invention are:

[0019] This invention effectively solves the technical problems of traditional grinding devices being single-function and poorly adaptable through integrated structural design. By using a first and second vertical plate that can move synchronously, the belt sander and the circumferential grinding component are integrated into the same workstation. With the help of a reversing rotating seat that can rotate 180 degrees, the outer, inner, and end faces of the pipe can be ground simultaneously and continuously in a single clamping. This significantly reduces the number of clamping operations and process changeover time, and significantly improves processing efficiency. During circumferential grinding, both the inner and outer grinding wheels can be driven to move radially independently through independent adjusting screws. Combined with a helical gear switching mechanism for synchronous coarse adjustment and independent fine adjustment, the device can quickly and accurately adapt to pipes with different outer diameters and wall thicknesses, making it highly versatile and eliminating the need for frequent tooling changes. During end face grinding, a planetary gear mechanism drives the belt sander to revolve, and a bevel gear set converts the frame's revolution into the grinding wheel's rotation. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of an MPP power cable protection pipe processing device proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the pipe reversal principle in an MPP power cable protection pipe processing device proposed in this invention;

[0023] Figure 3 This is a schematic diagram of the pipe clamping mechanism in an MPP power cable protection pipe processing device proposed in this invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first vertical plate in the MPP power cable protection pipe processing device proposed in this invention;

[0025] Figure 5 This is a schematic diagram of the structure of the second vertical plate in an MPP power cable protection pipe processing device proposed in this invention;

[0026] Figure 6 This is a schematic diagram of the frame structure in an MPP power cable protection pipe processing device proposed in this invention;

[0027] Figure 7 This is a schematic diagram of the circumferential grinding component in an MPP power cable protection pipe processing device proposed in this invention.

[0028] Figure 8 This is a schematic diagram of the slide block structure in an MPP power cable protection pipe processing device proposed in this invention;

[0029] Figure 9 This is a schematic diagram of the bottom structure of the support plate in an MPP power cable protection pipe processing device proposed in this invention;

[0030] Figure 10 This is a schematic diagram of the grinding of the inner and outer circles of different pipe materials in an MPP power cable protection pipe processing device proposed in this invention.

[0031] In the diagram: 1. Workbench;

[0032] 2. Reversing rotary seat;

[0033] 3. Pneumatic clamp;

[0034] 4. Pipe clamps; 401. Rollers;

[0035] 5. First vertical plate; 501. Large gear ring; 502. Shaft seat;

[0036] 6. Belt sander; 601. Planetary gear;

[0037] 7. Second vertical plate; 701. Active bevel gear disc;

[0038] 8. Frame; 801. Small gear ring; 802. End cover;

[0039] 9. Circumferential grinding assembly; 901. Support plate; 902. Grinding wheel; 903. Adjusting screw; 904. Long spline rod; 905. Slide; 906. Driven bevel gear; 907. Driven helical gear; 908. Short spline rod; 909. Driven helical gear; 910. Small cylinder. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0041] refer to Figures 1-10 This invention provides an MPP power cable protection pipe processing device, including a workbench 1, reference... Figure 1 Two main lead screws are rotatably mounted on the worktable 1. The first vertical plate 5 and the second vertical plate 7 are threadedly connected to the two main lead screws respectively. The ends of the two main lead screws are fixedly connected, with the same screw pitch and opposite screw directions. A reversing rotary seat 2 is fixedly mounted in the middle of the worktable 1. A pneumatic clamping seat 3 for clamping pipes is fixedly mounted on the output end of the top of the reversing rotary seat 2. The worktable also includes a first vertical plate 5 and a second vertical plate 7 symmetrically slidably mounted on the worktable 1. The first vertical plate 5 and the second vertical plate 7 can move synchronously towards each other and away from each other. A belt sander 6 is rotatably mounted on the first vertical plate 5. After starting, the belt sander 6 can rotate around the pipe axis. A frame 8 is rotatably mounted on the second vertical plate 7. (See reference) Figure 5 A small gear ring 801 is fixedly installed on the frame 8 to form a power connection with the drive source installed on the second vertical plate 7. A circumferential grinding component 9 is installed on the frame 8 for grinding the inner and outer circular surfaces of both ends of the pipe. The circumferential grinding component 9 is suitable for various pipes with large differences in diameter and wall thickness.

[0042] The synchronous relative or opposite movement of the first vertical plate 5 and the second vertical plate 7 enables the belt sander 6 and the circumferential grinding assembly 9 to be quickly and accurately positioned at the end of the pipe to be processed, completing the coordinated grinding of the end face, inner surface and outer surface. The independent radial adjustment of the two grinding wheels 902 in the circumferential grinding assembly 9 allows the device to adapt to pipes of different diameters and wall thicknesses, achieving a wide range of processing without changing the components. Furthermore, the drive source on the second vertical plate 7 drives the small gear ring 801 to rotate, which in turn drives the frame 8 to rotate as a whole, thereby achieving the purpose of circumferential grinding of the pipe.

[0043] refer to Figure 2 and 3The reversing rotating seat 2 has the function of rotating 180 degrees in both directions and can be locked when rotating 90 degrees. The telescopic end of the pneumatic clamp 3 is symmetrically equipped with two sets of pipe clamps 4. Rollers 401 are rotatably embedded in the clamping contact surface of the pipe clamps 4 to limit the rotation of the pipe without interfering with the axial movement of the pipe.

[0044] Among them, the reversing rotating seat 2 can clamp and rotate the tube by 180 degrees, so that the two ends of the tube can move sequentially to the end and inner and outer circle processing positions, and the grinding of both ends can be completed without re-clamping. The design of the roller 401 allows the tube to be driven to adjust the axial displacement when the first vertical plate 5 and the second vertical plate 7 are moving towards each other. At the same time, it ensures that the tube will not rotate during the grinding process, thus ensuring processing accuracy.

[0045] refer to Figure 4 The input shaft of the belt sander 6 is radially arranged with the pipe and an extension shaft is fixedly installed. An annular groove is provided on the first vertical plate 5 and a bearing seat 502 is slidably installed in the annular groove. The extension shaft is rotatably assembled with the bearing seat 502. A planetary gear 601 is fixedly installed at the end of the extension shaft. A large gear ring 501 that meshes with the planetary gear 601 is fixedly installed on the first vertical plate 5.

[0046] When the input shaft of the belt sander 6 drives the belt to run for end face grinding, the input shaft drives the planetary gear 601 to revolve around the fixed large gear ring 501 through the extension shaft, thereby driving the entire belt sander 6 to rotate around the pipe axis, realizing a grinding method that combines radial and axial grinding to achieve comprehensive and uniform grinding of the pipe end face.

[0047] refer to Figures 6-8 The circumferential grinding assembly 9 includes a support plate 901 and grinding wheels 902. Multiple support plates 901 are fixedly mounted on the frame 8 in a circular array. Each support plate 901 has two grinding wheels 902 mounted on it. Both grinding wheels 902 can be independently moved radially along the pipe to accommodate pipes of different diameters and wall thicknesses. The rotational driving force for the two grinding wheels 902 comes from the rotation of the frame 8, and the rotation directions are opposite. Two adjusting screws 903 and a long splined rod 904 are rotatably mounted inside the support plate 901. 03 has two independently meshing slide blocks 905, which are longitudinally slidably mounted on the support plate 901. Two grinding wheels 902 are rotatably mounted on the two slide blocks 905. Two meshing bevel gears are rotatably mounted on the slide blocks 905. One bevel gear is splined to the long spline rod 904, and the other bevel gear is fixedly connected to the shaft of the grinding wheel 902. The position of the grinding wheel 902 can be adjusted without interfering with the rotation of the grinding wheel 902. A pressure sensor is integrated between the shaft of the grinding wheel 902 and the slide block 905.

[0048] The two slide blocks 905 are driven by two independent adjusting screws 903, which can move independently along the slide rail of the support plate 901, thereby driving the two grinding wheels 902 to feed radially independently. This independent adjustment mechanism allows the inner and outer grinding wheels 902 to be precisely adjusted to their respective theoretical grinding positions according to the actual outer diameter and wall thickness of the pipe, without interfering with each other. The pressure sensor integrated between the shaft of the grinding wheel 902 and the slide block 905 can monitor the grinding pressure in real time. When the pressure exceeds or falls below the set threshold, the system can automatically fine-tune the feed amount to ensure consistent grinding quality and prevent over-grinding damage to the pipe.

[0049] refer to Figure 9 and Figure 10 A driven bevel gear 906 is fixedly mounted on the radial end of the long spline rod 904. A driving bevel gear disc 701, which meshes simultaneously with multiple driven bevel gears 906, is fixedly mounted on the second vertical plate 7, forming a bevel gear transmission mechanism that enables multiple grinding wheels 902 to grind synchronously. Driven helical gears 907 are fixedly mounted on the ends of both adjusting screws 903, and the two driven helical gears 907 are staggered. A short spline rod 908 is rotatably mounted on the support plate 901. A driving helical gear 909 is splinedly connected to the short spline rod 908. 9 is positioned between two driven helical gears 907. A small cylinder 910 is fixedly installed on the bracket plate 901 to drive the driving helical gear 909 to move along the axis of the short spline bar 908. The extension and retraction of the small cylinder 910 is used to switch the meshing state between the driving helical gear 909 and the two driven helical gears 907. An end cover 802 is fixedly installed on the bracket plate 901. A motor for driving multiple short spline bars 908 to rotate is fixedly installed on the end cover 802. The motor and the short spline bars 908 transmit power through the aforementioned bevel gear transmission mechanism.

[0050] When the frame 8 rotates, since the active bevel gear 701 is fixedly installed, the driven bevel gear 906 will also rotate when it revolves around the active bevel gear 701, thereby driving the long spline rod 904 to rotate. The rotation of the long spline rod 904 can be powered by the meshing of two bevel gears, which will eventually drive the two grinding wheels 902 to rotate to grind the pipe. With this design, only one power source is needed to achieve complete grinding of the entire inner and outer circumference of the pipe, resulting in higher integration.

[0051] When it is necessary to adjust the inner and outer grinding wheels 902 on all support plates 901 simultaneously to adapt to the new pipe specifications, the motor on the end cover 802 transmits power to the short spline rod 908 through the bevel gear transmission mechanism, driving the short spline rod 908 to rotate. This, in turn, drives the adjusting screw 903 to rotate through the helical gear pair, thus achieving synchronous adjustment and ensuring the consistency of the grinding wheel 902 adjustment on the frame 8. At the same time, when it is necessary to adjust the radial position of a single grinding wheel 902 independently, the small cylinder 910 on the corresponding support plate 901 is controlled to move the driving helical gear 909 axially along the short spline rod 908, so that it meshes with the driven helical gear 907 at the end of the target adjusting screw 903, thereby driving the corresponding slide 905 and grinding wheel 902 to move independently, achieving precise positioning adjustment.

[0052] The device described in this invention is a specialized piece of equipment for integrated grinding of the ends of MPP power cable protective pipes. Its core working principle lies in achieving efficient and precise processing of the pipe end face, inner surface, and outer surface through an integrated multi-station collaborative grinding and adaptive adjustment mechanism. It can also widely adapt to pipe specifications with different diameters and wall thicknesses. The specific working process is as follows:

[0053] Pipe clamping and positioning: The MPP pipe to be processed is placed horizontally on the pneumatic clamp. The pneumatic clamp is activated, and two sets of symmetrical pipe clamps retract synchronously towards the center. The pipe is clamped by rollers that can rotate freely within their contact surfaces. The design of the rollers allows the pipe to make slight sliding adjustments along its axial direction while it is clamped, but it cannot rotate circumferentially. This ensures the stable positioning of the pipe during subsequent grinding and provides the possibility for possible axial centering adjustments.

[0054] At this time, the two main lead screws on the drive table rotate synchronously. Since the threads of the two main lead screws are opposite and linked at the ends, they will drive the first and second vertical plates to move precisely in opposite directions or in the opposite direction. The first vertical plate moves towards the end of the pipe, so that the sanding belt of the belt grinder contacts the end face of the pipe to be processed. The belt grinder is started, and its sanding belt runs at high speed to perform the main grinding operation. At the same time, the input shaft of the belt grinder drives the planetary gear at its end to rotate through the extension shaft. Because the planetary gear meshes with the large gear ring fixedly mounted on the first vertical plate, the planetary gear will revolve around the large gear ring under the driving force of the belt sander itself. This motion forces the entire belt sander to slowly rotate in a circle around the pipe axis. Therefore, the belt sander has both axial feed grinding and rotational scanning around the pipe axis, which can uniformly and thoroughly grind the entire end face of the pipe, efficiently remove burrs and ensure the flatness of the end face. The second vertical plate performs circumferential grinding on the other end of the pipe. The detailed principle is as follows.

[0055] When it is necessary to adapt to pipes with different outer diameters and wall thicknesses, all grinding wheels can be preset synchronously. Start the motor installed on the end cover of the frame. The power is transmitted to the short spline rods on each support plate through a bevel gear transmission mechanism. By controlling the action of the small cylinders on each support plate, the driving helical gear meshes with the driven helical gear at the end of either of the two adjusting screws. The motor drives the short spline rod to rotate, which in turn drives the corresponding adjusting screw to rotate through the helical gear pair. This drives the slide and grinding wheel on the screw to move radially along the pipe. By selecting to mesh with the inner or outer ring adjusting screw, the initial radial position of all inner grinding wheels or all outer grinding wheels can be adjusted synchronously to quickly match the approximate inner and outer diameters of the pipe.

[0056] During the circular grinding motion, the drive source rotates the drive gear mounted on the second vertical plate. This gear meshes with a small gear ring fixed on the frame, thereby driving the entire frame to rotate around the tube axis. The rotational motion of the frame is transmitted to the grinding wheel through the following path: the support plate fixed on the frame revolves around the tube → the driven bevel gear at the end of the long spline rod on the support plate revolves around the driving bevel gear fixed on the second vertical plate → since the driving bevel gear is fixed, the driven bevel gear is forced to rotate on its own axis while revolving around the tube → the rotational motion is transmitted through the long spline rod → the long spline rod transmits the rotation to a bevel gear inside the slide through a spline connection → through... A pair of meshing bevel gears reverses the power direction by 90 degrees, ultimately driving the grinding wheel shaft to rotate at high speed. Crucially, since all driven bevel gears mesh with the same fixed driving bevel gear disc, and the bevel gear transmission pairs corresponding to the inner and outer grinding wheels are designed with opposite rotation directions, the inner and outer grinding wheels achieve high-speed rotation in opposite directions when the frame revolves, greatly improving grinding efficiency and quality. While the grinding wheels rotate, the frame continues to rotate and revolve, driving multiple sets of grinding wheels arranged in a ring array on it to rotate around the pipe axis, enabling the inner and outer grinding wheels to continuously and completely grind the outer and inner circular surfaces of the pipe end area.

[0057] Pipe reversal and other end processing: After the inner and outer circles and end face of one end of the pipe are all ground, control the second vertical plate to retract. Start the reversing rotating seat and rotate it 180 degrees to move the processed end of the pipe to the side away from the processing unit, and the unprocessed end to the processing station. Repeat the above steps to complete the full grinding of the other end of the same pipe. The reversing rotating seat has a 90-degree locking function to facilitate the loading and unloading of pipes.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A MPP electric power cable protection tube processing device, characterized in that, The system includes a workbench (1), a reversing rotary seat (2) fixedly installed in the middle of the workbench (1), and a pneumatic clamp (3) for clamping pipes fixedly installed at the output end of the top of the reversing rotary seat (2). It also includes: The first vertical plate (5) and the second vertical plate (7) are symmetrically slidably mounted on the worktable (1), and the first vertical plate (5) and the second vertical plate (7) can move towards each other and away from each other synchronously; Rotate the belt sander (6) mounted on the first vertical plate (5). After the belt sander (6) is started, it can rotate around the axis of the pipe. Rotate the frame (8) mounted on the second vertical plate (7); A circumferential grinding assembly (9) is installed on the frame (8) for grinding the inner and outer circular surfaces of both ends of the pipe. The circumferential grinding assembly (9) is suitable for various pipes with large differences in diameter and wall thickness. The circumferential grinding assembly (9) includes a support plate (901) and a grinding wheel (902). The support plate (901) is provided in multiple and is fixedly installed on the frame (8) in a ring array. Two grinding wheels (902) are installed on each support plate (901). The two grinding wheels (902) can be independently moved and adjusted along the radial direction of the pipe to be used for pipes with different diameters and wall thicknesses. The rotation driving force of the two grinding wheels (902) comes from the rotation of the frame (8) and the rotation directions are opposite.

2. The MPP power cable protection pipe processing device according to claim 1, characterized in that, The reversing rotating seat (2) has the function of rotating 180 degrees in both directions and can be locked when rotating 90 degrees. The telescopic end of the pneumatic clamp (3) is symmetrically equipped with two sets of pipe clamps (4). The clamping contact surface of the pipe clamp (4) is rotatably embedded with rollers (401) to limit the rotation of the pipe without interfering with the axial movement of the pipe.

3. The MPP power cable protection pipe processing device according to claim 1, characterized in that, Two main lead screws are rotatably mounted on the workbench (1). The first vertical plate (5) and the second vertical plate (7) are respectively threaded to the two main lead screws. The ends of the two main lead screws are fixedly connected. The two lead screws have the same pitch and opposite directions.

4. The MPP power cable protection pipe processing device according to claim 1, characterized in that, The input shaft of the belt sander (6) is radially arranged with the pipe and an extension shaft is fixedly installed. An annular groove is provided on the first vertical plate (5) and a bearing seat (502) is slidably installed in the annular groove. The extension shaft and the bearing seat (502) are rotatably assembled. A planetary gear (601) is fixedly installed at the end of the extension shaft. A large gear ring (501) that meshes with the planetary gear (601) is fixedly installed on the first vertical plate (5).

5. The MPP power cable protection pipe processing device according to claim 1, characterized in that, Two adjusting screws (903) and a long spline rod (904) are rotatably installed inside the support plate (901). Two sliding blocks (905) are independently meshed on the two adjusting screws (903). The sliding blocks (905) are longitudinally slidably installed with the support plate (901). Two grinding wheels (902) are rotatably installed on the two sliding blocks (905). Two meshing bevel gears are rotatably installed on the sliding blocks (905). One of the bevel gears is splinedly connected to the long spline rod (904), and the other bevel gear is fixedly connected to the shaft of the grinding wheel (902). The position of the grinding wheel (902) is adjusted without interfering with the rotation of the grinding wheel (902).

6. The MPP power cable protection pipe processing device according to claim 5, characterized in that, A pressure sensor is integrated between the shaft of the grinding wheel (902) and the slide (905).

7. The MPP power cable protection pipe processing device according to claim 6, characterized in that, A driven bevel gear (906) is fixedly installed at the radial end of the long spline rod (904), and an active bevel gear disc (701) that meshes with multiple driven bevel gears (906) is fixedly installed on the second vertical plate (7) to form a bevel gear transmission mechanism that enables multiple sets of grinding wheels (902) to grind synchronously.

8. The MPP power cable protection pipe processing device according to claim 7, characterized in that, Both ends of the two adjusting screws (903) are fixedly mounted with driven helical gears (907), and the two driven helical gears (907) are staggered. A short spline rod (908) is rotatably mounted on the bracket plate (901). A driving helical gear (909) is splined on the short spline rod (908). The driving helical gear (909) is located between the two driven helical gears (907). A small cylinder (910) for driving the driving helical gear (909) to move along the axis of the short spline rod (908) is fixedly mounted on the bracket plate (901). The meshing state of the driving helical gear (909) and the two driven helical gears (907) is switched by the extension and retraction of the small cylinder (910).

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