Water electricity pre-burying pipeline bevel processing device

Abstract

The application discloses a water and electricity pre-buried pipeline bevel processing device, and relates to the technical field of water and electricity pre-buried pipeline bevel processing, which comprises an erecting unit, a handrail frame, a shaft rod, a plurality of inner clamping pieces, a plurality of outer clamping pieces and a fitting assembly. The application forms a bidirectional rolling clamping mechanism through the cooperation of the inner and outer clamping of the wide wheel and the flat wheel, and can automatically adapt to pipelines with different diameters. The application sets a tension spring between the bent pipe and the clamping rod, and utilizes the linkage cooperation of the tensioning piece and the sliding groove to automatically adjust the clamping angle and strength according to the change of the pipeline outer diameter, thereby effectively preventing the deviation, skidding or instability phenomenon caused by external disturbance while maintaining a good fitting state. In addition, the screw rod and the connecting disc in the tensioning piece constitute a synchronous adjusting mechanism, so that the operator can realize the precise control of the fitting force through the rotating operation, and ensure that the cutter is uniformly stressed and the trajectory is stable during the bevel processing, thereby improving the bevel forming quality.

Description

Technical Field

[0001] This invention relates to beveling technology for pre-buried hydropower pipes, and in particular to a beveling device for pre-buried hydropower pipes. Background Technology

[0002] During hydropower construction, the pre-embedding of water-stop steel sleeves within shear walls is a crucial step, as its installation quality directly impacts the structure's waterproofing performance and the reliability of subsequent pipe installation. Because the steel sleeves must be precisely cut according to the wall thickness before pre-embedding, measurement errors or construction deviations often result in insufficient sleeve length, failing to meet the requirement of flush alignment between both ends and the formwork. This necessitates on-site pipe welding for additional sections. Direct welding of the sleeve ends can easily lead to incomplete welds and poor fusion, affecting structural strength and waterproofing. Therefore, beveling of the pipe ends is always required before welding.

[0003] For steel sleeves that are not pre-embedded, a professional beveling machine can usually be used to perform standard beveling to ensure the quality of the weld joint. However, when the sleeve is already pre-embedded in a concrete wall or steel structure, its position is fixed, and conventional beveling equipment cannot be used. In such cases, manual beveling with small hand-held grinding tools is usually required.

[0004] This method presents several problems: First, it significantly increases the operational difficulty, as workers need to manually adjust angles and pressure within a limited space to achieve the ideal bevel shape and size. Second, the difficulty in maintaining constant pressure and speed during manual operation leads to unstable bevel quality, potentially resulting in inconsistent bevel angles and significant differences in surface roughness. These issues directly affect the quality of subsequent welding, including weld uniformity, fusion depth, and final joint strength. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is: the welding of pre-embedded steel pipe sleeves requires beveling, which is difficult to operate manually with small hand-held grinding tools.

[0006] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a beveling device for pre-buried water and electricity pipes, which includes a support unit, including a handrail, a shaft fixed to the middle of both sides of the end of the handrail, multiple sets of inner clamps hinged to the outer sides of both ends of the handrail, multiple sets of outer clamps fixed to both ends of the shaft, and a fitting component hinged to the middle of the shaft.

[0007] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention: the handrail includes a U-shaped frame and hinged parts protruding on both sides of the U-shaped frame;

[0008] The hinge portion is fixedly engaged with the shaft.

[0009] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention: the inner clamping member includes a frame rod hinged to the outer sides of both ends of the hinged part, a wide wheel hinged to the bottom of the frame rod, and a clamping rod fixedly disposed on the inner side of the middle of the frame rod.

[0010] Furthermore, the wide wheel is attached to the inner wall of the pipe.

[0011] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention: the bonding component includes a bearing ring hinged to the inner side of the middle of the shaft, a bonding member fixedly disposed at the front end of the bearing ring, a tensioning member slidably connected to the inner side of the bonding member, and a bearing platform fixed to the end of the tensioning member.

[0012] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention: the outer clamp includes a fixing ring fixedly sleeved at both ends of the shaft, a bent pipe fixedly sleeved inside the fixing ring sleeve, and a flat wheel hinged to the end of the bent pipe.

[0013] The flat wheel is attached to the outer wall of the pipe.

[0014] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention: the bend and the inner side of the clamp are fixedly connected together with a tension spring;

[0015] The tensioning member and the tension spring are respectively hinged to the middle of the clamp rod via tube clamps.

[0016] In a preferred embodiment of the hydropower pre-embedded pipe beveling processing device of the present invention: the fitting component includes a connecting body fixedly connected to one side of the bearing ring, a sliding groove penetrating both end faces of the connecting body, and a snap-fit ​​block protruding from the upper end face of the connecting body.

[0017] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention: the tensioning member includes a connector slidably connected to the inner side of the groove, two sets of screws respectively hinged to the connector and the pipe clamp, and a connecting disc threadedly connected to the screws.

[0018] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention: the support platform includes a profile fixedly clamped to the clamping block, and an angle adjustment plate threaded to the end face of the profile.

[0019] In a preferred embodiment of the hydropower pre-embedded pipe beveling device of the present invention, it further includes a beveling machine threadedly connected to the arc groove of the angle adjustment plate.

[0020] The beneficial effects of this invention are as follows: This device utilizes the coordinated inner and outer clamping of wide and flat wheels to form a bidirectional rolling clamping mechanism, which can automatically adapt to pipes of different diameters. By setting a tension spring between the bend and the clamping rod, and utilizing the linkage between the tensioning element and the sliding groove, the clamping angle and force can be automatically adjusted according to changes in the outer diameter of the pipe. While maintaining a good fit, it effectively prevents deviation, slippage, or instability caused by external disturbances. In addition, the screw and connecting disc in the tensioning element constitute a synchronous adjustment mechanism, allowing the operator to achieve precise control of the clamping force through rotation, ensuring uniform force and stable trajectory of the tool during beveling, thereby improving the beveling quality and avoiding problems such as inconsistent beveling angles and uneven depths. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0022] Figure 1 A schematic diagram of the overall structure of the hydropower pre-embedded pipe beveling device of the present invention is shown;

[0023] Figure 2 A schematic diagram of the structure of the pre-embedded pipe beveling device of the present invention is shown.

[0024] Figure 3 The present invention is shown Figure 2 Enlarged view of the internal clamping structure at point A;

[0025] Figure 4 A partial structural diagram of the outer clamp of the present invention is shown;

[0026] Figure 5 A schematic diagram of the bonding component structure of the present invention is shown;

[0027] Figure 6 A schematic diagram of the support platform structure of the present invention is shown. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0029] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0030] Reference Figures 1-6 This embodiment provides a beveling device for pre-buried water and electricity pipes, including a support unit 1, which includes a handrail 11, a shaft 12 fixed to the middle of both sides of the end of the handrail 11, multiple sets of inner clamps 13 hinged to the outer sides of both ends of the handrail 11, multiple sets of outer clamps 14 fixed to both ends of the shaft 12, and a bonding component 15 hinged to the middle of the shaft 12.

[0031] In one embodiment provided in this application, the handrail frame 11 includes a U-shaped frame 111 and hinge portions 112 protruding from both sides of the U-shaped frame;

[0032] The hinge part 112 is fixedly connected to the shaft rod 12.

[0033] In this embodiment, the handrail 11 adopts a symmetrical design, with one end being a U-shaped frame 111, serving as the handhold and pressure point during operation. Two sets of symmetrical hinges 112 extend downwards from both ends of the U-shaped frame 111. These hinges are located on both sides of the U-shaped frame and are fixedly connected to a rotating rod 12 at their axis. When pressure is applied to the tail end of the U-shaped frame 111, the hinges 112 drive the rotating rod 12 to rotate, thereby achieving the overall adjustment of the device for grinding the pipe N.

[0034] Furthermore, such as Figure 1 As shown, the rotating rod 12 passes through the hinge portion 112 of the handrail frame 11 and extends a distance from its outer side to facilitate the hinge of two sets of inner clamps 13 on both sides of the outer end of the hinge portion 112. It is worth noting that although the inner clamps 13 are mounted on the rotating rod 12, they do not rotate actively with the rotating rod 12, but rather are adaptively adjusted according to the specific shape and size of the pipe. Furthermore, two sets of symmetrically arranged outer clamps 14 are fixedly connected to the rotating rod 12 body inside the hinge portion 112. The inner clamps 13 and outer clamps 14 act on the inner and outer sides of the pipe N respectively, ensuring that the fitting assembly 15 can tightly fit the pipe N, providing a stable clamping effect, thereby ensuring the accuracy and stability during the beveling process. The overall structure not only improves operational convenience but also enhances the adaptability of the device to pipes of different specifications.

[0035] In one embodiment provided in this application, the inner clamp 13 includes a frame rod 131 hinged to the outer sides of both ends of the hinge portion 112, a wide wheel 132 hinged to the bottom of the frame rod 131, and a clamping rod 133 fixedly disposed on the inner side of the middle of the frame rod 131.

[0036] The wide wheel 132 fits against the inner wall of pipe N.

[0037] In one embodiment provided in this application, the outer clamp 14 includes a fixing ring 141 fixedly sleeved at both ends of the shaft 12, a bent tube 142 fixedly sleeved inside the tube of the fixing ring 141, and a flat wheel 143 hinged to the end of the bent tube 142.

[0038] Flat wheel 143 fits against the outer wall of pipe N.

[0039] In this embodiment, the inner clamp 13 can be positioned on the inner wall of the pipe N. The inner clamp 13 includes a support rod 131 hinged to both ends of the hinge portion 112. The bottom of the support rod 131 has a rotatable wide wheel 132 for contacting the inner wall of the pipe N. The wide wheel 132 not only improves the stability of the contact with the inner wall of the pipe but also reduces frictional resistance, facilitating the advancement and positioning of the device within the pipe.

[0040] Furthermore, clamping rods 133 are fixedly connected to the middle of the two sets of support rods 131 to provide auxiliary support for the overall structure and to provide limits for the tensioning of the bonding component 15 and the outer clamp 14, ensuring good alignment and stability between the device and the pipeline during the beveling process.

[0041] Furthermore, the outer clamp 14 includes a fixing ring 141 fixedly sleeved at both ends of the shaft 12. A bend 142 is connected to the fixing ring 141. The bend 142 is arranged along the outer wall of the pipe and a flat wheel 143 is hinged to its end. The flat wheel 143 has a large diameter, which can better fit the outer wall surface of the pipe N and improve the stability and guiding performance of the device during operation.

[0042] Preferably, the wide wheel 132 is a rubber wheel with a smaller diameter and a wider width, while the flat wheel 143 is a rubber wheel with a larger diameter and a narrower width. The wide wheel 132 is perpendicularly fitted to the inner wall of pipe N, and its larger width increases the clamping effect while reducing the operating resistance caused by sliding friction. The flat wheel 143 is inclinedly clamped to the outer wall of pipe N through the bend 142, and its larger diameter can better adapt to the curvature of pipe outer walls of different diameters, thereby enhancing the applicability of the device and the flexibility of on-site operation.

[0043] In one embodiment provided in this application, the bonding assembly 15 includes a bearing ring 151 hinged to the inner side of the middle of the shaft 12, a bonding member 152 fixedly disposed at the front end of the bearing ring 151, a tensioning member 153 slidably connected to the inner side of the bonding member 152, and a support platform 154 fixed to the end of the tensioning member 153.

[0044] In this embodiment, as Figure 3 and Figure 4 As shown. A bearing ring 151 is interference-fitted into the middle of the shaft 12. The bearing ring 151 can be composed of a bearing and a clamp that is clamped onto the outer ring of the bearing. This clamp can fix a fitting 152 perpendicular to the rotating shaft 12. A support platform 154 is fixedly connected to the upper end face of the fitting 152, and a small beveling machine can be installed on the support platform 154. A tensioning member 153 is slidably connected to the back of the fitting 152. One end of the tensioning member 153 is hinged to the clamping rod 133, while the other side is slidably connected to the back of the fitting 152.

[0045] Preferably, the tensioning member 153 can adjust its length by adjusting the angle of the lowering of the fitting member 152 under the limiting action of the clamping rod 133 on one side, so that the fitting member 152 drives the bearing platform 154 to fit more closely to the pipe surface of the pipe N, thereby adjusting the grinding angle of the beveling machine.

[0046] In summary, this device can stably fit the inner and outer walls of the pipe simultaneously during the beveling process, forming a reliable support system. This effectively prevents processing deviations caused by eccentricity or slippage, ensuring the quality of the beveling process. It is suitable for the high-efficiency, high-precision beveling operations required for pre-embedded pipes in confined spaces in hydropower projects.

[0047] Reference Figures 3-6 As an optional embodiment, the inner side of the bend 142 and the clamp 133 is fixedly connected to the tension spring 21;

[0048] The tensioning element 153 and the tension spring 21 are respectively hinged to the middle of the clamping rod 133 through the tube clamp 22.

[0049] In this embodiment, a tension spring 21 is connected between the inner sides of the bend 142 and the clamping rod 133. This tension spring is hinged and fixed by a pipe clamp 22 located in the middle of the clamping rod 133, thus forming an elastic tension structure. The function of the tension spring 21 is to elastically limit the unfolding angle between the bend 142 and the support rod 131, so that it can automatically adapt and maintain a stable clamping force when clamping pipes N of different diameters, preventing displacement or loosening due to external disturbances.

[0050] Specifically, the bend 142 is a stamped arc-shaped structure, with one end fixedly connected to the fixing ring 141, and the other end extending downwards and hinged to the flat wheel 143, ensuring that the flat wheel can fit against the outer wall surface of the pipe N at a certain angle. Two sets of bends 142 are provided, symmetrically arranged on both sides of the shaft 12, forming a symmetrical support system with the clamping rod 133 and the support rod 131. Tension springs 21 are provided in the middle of each set of bends 142 and at corresponding positions on the clamping rod 133, giving the entire clamping mechanism good self-adaptability and resilience under stress.

[0051] Furthermore, the tension spring 21 is hinged to the middle of the clamping rod 133 via a standard pipe clamp 22, facilitating installation, replacement, and adjustment of the preload. Simultaneously, the clamping rod 133 itself is also hinged via a rotating rod 12, enabling the entire device to be folded and stored. Operators only need to grasp the tail end of the U-shaped frame 111 and apply pressure to open or fold the entire erection unit 1, facilitating transport and rapid on-site deployment. This is particularly suitable for space-constrained pre-embedded sleeve beveling operations in hydropower projects.

[0052] Preferably, the flat wheel 143 can be equipped with a roller assembly with a built-in drive motor, enabling it to rotate autonomously and thus drive the entire erection unit 1 to move automatically along the circumference of the pipe N. This not only significantly improves the efficiency of beveling and reduces errors caused by manual intervention, but also enables continuous, uniform, and stable beveling operations, improving the surface finish and consistency of the beveling and reducing the amount of subsequent grinding work.

[0053] During use, the clamping rod 133 and its bottom straight roller 132 are first placed inside the pipe N. Then, the rotating rod 12 is rotated by manually rotating the U-shaped frame 111, simultaneously opening the bend 142 and stretching the tension spring 21. At this time, the flat wheel 143 at the end of the bend 142 will adhere to and clamp the outer wall of the pipe N, forming a bidirectional rolling clamping structure with the inner straight roller 132, ensuring that the device is stably attached to the pipe surface. This structure can not only effectively resist the vibration and reverse torque generated during beveling, but also automatically adjust the clamping force according to the change in pipe diameter, achieving safe, efficient, and stable on-site beveling processing.

[0054] In summary, this device has excellent folding and storage performance. Operators only need to hold the end of the U-shaped frame 111 to unfold or fold the device, making it easy to carry and deploy quickly. It is particularly suitable for pre-embedded sleeve beveling operations in hydropower projects where space is limited and operation is inconvenient, such as in shear walls and beam-column joints.

[0055] Reference Figures 3-6As an optional embodiment, the fitting component 152 includes a connecting body 1521 fixedly connected to one side of the bearing ring 151, a sliding groove 1522 penetrating both end faces of the connecting body 1521, and a snap-fit ​​block 1523 protruding from the upper end face of the connecting body 1521.

[0056] In one embodiment provided in this application, the tensioning member 153 includes a connector 1531 slidably connected to the inside of the slide groove 1522, two sets of screws 1532 respectively hinged to the connector 1531 and the pipe clamp 22, and a connecting disc 1533 threadedly connected to the screws 1532.

[0057] In one embodiment provided in this application, the support platform 154 includes a profile 1541 fixedly snapped onto the snap-fit ​​block 1523, and an angle adjustment plate 1542 threadedly connected to the end face of the profile 1541.

[0058] In one embodiment provided in this application, a beveling machine 31 on the arc groove of the threaded connection angle adjustment plate 1542 is also included.

[0059] In this embodiment, as Figure 5 As shown. The bonding component 152 includes a connecting body 1521 fixedly connected to one side of the bearing ring 151. This connecting body 1521 serves as the core load-bearing structure of the entire bonding assembly, possessing good rigidity and structural stability. Slide grooves 1522 are provided through both sides of the connecting body 1521, providing a guide channel and displacement space for the tensioning component 153, enabling it to adaptively adjust according to changes in the actual pipe outer diameter. Furthermore, three sets of locking blocks 1523 protrude from the upper end face of the connecting body 1521. These locking blocks not only support the subsequently installed support platform 154 but also serve as limiters and positions, ensuring that the beveling machine 31 maintains a stable posture during operation and preventing deviation or shaking from affecting processing accuracy.

[0060] Furthermore, such as Figure 5As shown. The tensioning member 153 includes a connector 1531 slidably connected within a groove 1522. The connector 1531 can move freely along the direction of the groove 1522 and is hinged to the pipe clamp 22 and the connecting plate 1533 respectively by two sets of symmetrically arranged screws 1532. One end of one screw 1532 is hinged to the connector 1531, while the other screw 1532 is fixedly connected to the pipe clamp 22. The screw portions of the two sets of screws 1532 are arranged adjacent to each other, allowing the connecting plate 1533 to be screwed into both ends simultaneously. By rotating, the position of the connector 1531 can be adjusted synchronously, and the length of the entire tensioning member 153 can be adjusted, thereby changing the support angle between the fitting member 152 and the clamping rod 133, and ultimately adjusting the bonding force between the bearing platform 154 and the pipe N. This design not only improves the device's compatibility with pipes of different diameters, but also enhances the controllability and safety during on-site construction. It is especially suitable for complex scenarios in hydropower projects where the size of the pre-embedded steel sleeves varies and the installation deviation is large.

[0061] In a preferred embodiment of this application, the support platform 154 includes a profile 1541 snapped onto the snap-fit ​​block 1523. This profile is made of a high-strength, lightweight metal material, balancing strength and portability, such as an aluminum profile. One end of the profile 1541 is fitted with an angle adjustment plate 1542 via a threaded connection. This adjustment plate has an arc-shaped adjustment groove, allowing the operator to flexibly adjust and lock it according to the required bevel angle, thus meeting the bevel processing needs under multiple angles and working conditions. The design of the angle adjustment plate 1542 not only expands the applicability of bevel operations but also enhances the device's adaptability to complex construction site environments, such as inclined walls and misaligned sleeves.

[0062] In a preferred embodiment of this application, the beveling machine 31 is fixed to the arc groove of the angle adjustment plate 1542 via a threaded connection, forming a stable and detachable installation structure. This connection method facilitates quick tool replacement and equipment maintenance on-site, and also supports the interchangeable use of beveling machines of different specifications, improving equipment utilization. In practical applications, the beveling machine 31, along with the mounting unit 1, is attached to the surface of the pipe N fixed in the concrete layer M, and maintains a stable cutting posture under the synergistic action of the tension spring 21, the straight roller 132, and the flat roller 143. If the flat roller 143 is configured as an intelligent roller driven by a built-in motor, it can drive the entire device to run automatically along the circumference of the pipe, achieving continuous, efficient, and uniform beveling processing results.

[0063] In addition, the entire bonding assembly 15 also includes an auxiliary support and tension adjustment system. Through the linkage between the tension spring 21 and the tensioning element 153, the device can automatically maintain the optimal bonding state under various working conditions. Specifically, the tension spring 21 is hinged to the middle of the clamping rod 133 via the pipe clamp 22, and its two ends are connected to the bent pipe 142 and the support rod 131 respectively, forming an elastic return mechanism. When encountering pipes of different outer diameters, the tension spring 21 can automatically extend and retract according to the force, thereby adjusting the unfolding angle between the inner and outer clamping structures to achieve adaptive clamping. This flexible adjustment mechanism not only improves the stability during the beveling process but also helps to reduce the difficulty of manual operation and improve construction efficiency.

[0064] In summary, this device utilizes the coordinated inner and outer clamping of the wide wheel 132 and the flat wheel 143 to form a bidirectional rolling clamping mechanism, which can automatically adapt to pipes N of different diameters fixed in the concrete layer M. By setting a tension spring 21 between the bend 142 and the clamping rod 133, and utilizing the linkage between the tensioning element 153 and the sliding groove 1522, the clamping angle and force can be automatically adjusted according to changes in the outer diameter of the pipe. While maintaining a good fit, it effectively prevents deviation, slippage, or instability caused by external disturbances. In addition, the screw 1532 and the connecting plate 1533 in the tensioning element 153 constitute a synchronous adjustment mechanism, allowing the operator to achieve precise control of the clamping force through rotation. This ensures uniform force and stable trajectory of the tool during beveling, thereby improving the beveling quality and avoiding problems such as inconsistent beveling angles and depths.

[0065] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A beveling device for pre-embedded hydropower pipes, characterized in that: include, The erection unit (1) includes a handrail frame (11), a shaft (12) fixed to the middle of both sides of the end of the handrail frame (11), multiple sets of inner clamps (13) hinged to the outer sides of both ends of the handrail frame (11), multiple sets of outer clamps (14) fixedly installed at both ends of the shaft (12), and a bonding component (15) hinged to the middle of the shaft (12). The handrail frame (11) includes a U-shaped frame (111) and hinged parts (112) protruding on both sides of the U-shaped frame. The hinge (112) is fixedly engaged with the shaft (12) at its axis. The bonding assembly (15) includes a bearing ring (151) hinged to the inner side of the middle of the shaft (12), a bonding member (152) fixedly disposed at the front end of the bearing ring (151), a tensioning member (153) slidably connected to the inner side of the bonding member (152), and a support platform (154) fixed to the end of the tensioning member (153). The fitting component (152) includes a connecting body (1521) fixedly connected to one side of the bearing ring (151), a sliding groove (1522) penetrating both end faces of the connecting body (1521), and a snap-fit ​​block (1523) protruding from the upper end face of the connecting body (1521). The inner clamp (13) includes a frame rod (131) hinged to the outer sides of both ends of the hinge part (112), and a clamp rod (133) fixedly disposed on the inner side of the middle of the frame rod (131). The outer clamp (14) includes a fixing ring (141) fixedly sleeved at both ends of the shaft (12), a bent tube (142) fixedly sleeved inside the tube of the fixing ring (141), and a flat wheel (143) hinged to the end of the bent tube (142). The flat wheel (143) is attached to the outer wall of the pipe (N); The inner side of the bent tube (142) and the clamp (133) are fixedly connected to the tension spring (21). The tensioning member (153) and the tension spring (21) are respectively hinged to the middle of the clamping rod (133) by the tube clamp (22); The tensioning member (153) includes a connector (1531) slidably connected to the inside of the slide groove (1522), two sets of screws (1532) respectively hinged to the connector (1531) and the pipe clamp (22), and a connecting disc (1533) threadedly connected to the screws (1532). The support platform (154) includes a profile (1541) fixedly snapped onto the snap-fit ​​block (1523) and an angle adjustment plate (1542) threaded onto the end face of the profile (1541).

2. The beveling device for pre-embedded hydropower pipelines according to claim 1, characterized in that: The inner clamp (13) includes a wide wheel (132) hinged to the bottom of the frame (131). The wide wheel (132) fits against the inner wall of the pipe (N).

3. The beveling device for pre-embedded hydropower pipelines according to claim 2, characterized in that: It also includes a beveling machine (31) threaded onto the arc groove of the angle adjustment plate (1542).

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