A BWFRP power pipe cutting device

Abstract

The present application relates to pipe cutting device technical field, specifically disclose a kind of BWFRP electric power pipe cutting device.In the body is installed with shaft cylinder, shaft cylinder one end is fixed with end ring, and several cutting pieces are installed on end ring, first swivel ring and second swivel ring are sleeved on shaft cylinder, when first swivel ring rotates, all cutting pieces are close or separate;End seat is fixed on the body, and top block is installed in end seat, one-way transmission mechanism is arranged between second swivel ring and shaft cylinder, when second swivel ring rotates, all top block is close or separate synchronously;When first swivel ring rotates and drives cutting piece to separate, shaft cylinder rotates in the direction, and second swivel ring is driven to rotate by one-way transmission mechanism, and second swivel ring will drive top block to separate.The cutting efficiency of the present application is high, and the quality of cut is good, and it is not easy to split;Cutting piece uses small size, short stroke design, significantly reduces energy consumption;It has the function of self-centering, can automatically adapt to different pipe diameter pipes, high applicability, convenient and fast to use.

Description

Technical Field

[0001] This invention relates to the field of pipe cutting equipment technology, and in particular to a BWFRP power pipe cutting device. Background Technology

[0002] BWFRP power conduits possess excellent mechanical properties, corrosion resistance, and insulation, making them widely used in power cable protection engineering. Precise cutting of BWFRP power conduits to the required length is an essential step in the manufacturing process. Currently, most cutting equipment for BWFRP power conduits uses high-speed rotating, linear-feed saw blades. During cutting, the stress on the pipe wall is unstable and uneven, easily leading to splitting and delamination along the fiber direction or between layers at the cut. It also easily forms burrs, chipping, or irregular nicks at the cut edge, resulting in poor cut quality that affects appearance and performance. Furthermore, the saw blade moves in a straight line to cut the pipe, resulting in a long stroke and a large idle stroke, leading to high energy consumption and low efficiency; these problems are particularly pronounced when cutting large-diameter pipes due to the larger saw blade size. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a BWFRP power pipe cutting device that features high cutting efficiency, low energy consumption, significantly improved cut quality, and good applicability.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A BWFRP power pipe cutting device includes a body, a power unit and a shaft seat fixed on the body; a shaft cylinder is provided on the shaft seat; an end ring is fixed to one end of the shaft cylinder, and a plurality of first sliding bodies are installed in the end ring, one end of each first sliding body is located in the inner circle of the end ring and a cutting blade is fixed thereon, and a first sliding pin is fixed to the side of each first sliding body; a first rotating ring and a second rotating ring are rotatably fitted on the shaft cylinder, the first rotating ring is connected to the power unit via a transmission coupling part, and a first sliding groove is provided on the first rotating ring to slide in one-to-one with the first sliding pin; when the first rotating ring rotates relative to the end ring, the first sliding groove drives the first sliding body to slide via the first sliding pin, so that all the cutting blades move closer or separate synchronously; an end seat is fixed on the body, and an inner hole is provided on the end seat. The hole and the other end of the shaft are directly opposite each other. Several second sliding bodies and elastic elements that drive the second sliding bodies to move towards the center of the end seat are installed in the end seat. One end of the second sliding body is located in the inner hole and is fixed with a top block. A second sliding pin is fixed to the side of the second sliding body. A one-way transmission mechanism is provided between the second rotating ring and the shaft. The second rotating ring is provided with a second sliding groove that slides in accordance with the second sliding pin. When the second rotating ring rotates relative to the end seat, the second sliding groove will drive the second sliding body to slide through the second sliding pin, so that all the top blocks move closer or separate synchronously. When the first rotating ring rotates in one direction and drives the cutting blade to separate in all directions, the shaft will rotate in that direction and drive the second rotating ring to rotate synchronously through the one-way transmission mechanism. The second rotating ring will drive the top blocks to separate.

[0006] In a preferred embodiment, the end ring is circular, the central axis of the end ring and the shaft cylinder coincides, all the first sliding bodies are distributed at equal angles with the central axis of the shaft cylinder as the center, and all the cutting blades are located on the same plane and the plane is perpendicular to the central axis of the shaft cylinder.

[0007] In a preferred embodiment, the inner hole of the end seat is circular and coincides with the central axis of the shaft cylinder. All the second sliding bodies are distributed at equal angles with the central axis of the shaft cylinder as the center. All the top blocks are located on the same plane and the plane is perpendicular to the central axis of the shaft cylinder.

[0008] In a preferred embodiment, the bearing is composed of two semi-circular parts, which are distributed vertically, with the lower part being fixedly connected to the machine body.

[0009] In a preferred embodiment, the transmission coupling part is a ring-shaped driven wheel, which is fixed to one side of the first rotating ring and the central axes of the two coincide. The power device outputs power through an output wheel, and the driven wheel is connected to the output wheel in a transmission connection.

[0010] In a preferred embodiment, the end ring is provided with a plurality of radial grooves, and the first sliding body is installed in the radial grooves and the two slide in cooperation; the direction of the first groove is an arc or a spiral.

[0011] In a preferred embodiment, a plurality of guide seats are fixed on the end seat, and the guide seats have cylindrical cavities that communicate with the inner hole of the end seat and extend radially along the inner hole. The second sliding body is located in the cylindrical cavity and the two slide in cooperation. The elastic element is a spring and is installed in the guide seat. The direction of the second sliding groove is an arc or a spiral.

[0012] In a preferred embodiment, the end of the end seat near the shaft cylinder is provided with a rotatable connection part, which is rotatably connected to the corresponding end of the shaft cylinder; the end of the end seat near the shaft seat is provided with a fixed connection part, which is fixedly connected to the corresponding end of the shaft seat; and there is an accommodating space between the end seat and the shaft seat for accommodating the second rotating ring and the one-way transmission mechanism.

[0013] In a preferred embodiment, the first rotating ring is located between the end ring and the shaft seat, and the second rotating ring is located between the end seat and the shaft seat.

[0014] In a preferred embodiment, an anti-slip pad is fixed to one end of the top block near the center of the end seat.

[0015] In a preferred embodiment, the one-way transmission mechanism includes a support plate, a pawl, a spring, and a ratchet. The support plate is fixed on the shaft cylinder, and the ratchet is formed on the second rotating ring. One or more sets of pawls and springs are provided and installed on the support plate, cooperating with the ratchet to form a ratchet and pawl mechanism.

[0016] In a preferred embodiment, the BWFRP power pipe cutting device includes a first cover, which is fixedly connected to the machine body and covers the outside of the end ring and the first rotating ring; the first cover has a side hole so that the end face of the end ring away from the shaft cylinder is exposed to the outside.

[0017] In a preferred embodiment, the BWFRP power pipe cutting device includes a feeding platform and a discharging platform, which are respectively positioned opposite the two ends of the shaft cylinder.

[0018] Compared with the prior art, the BWFRP power pipe cutting device of this invention has the following beneficial technical effects:

[0019] 1. When this BWFRP power pipe cutting device cuts the pipe, multiple cutting blades are distributed around the pipe and rotate along the pipe to cut it. This cutting method is very efficient and produces a neat cross-section. It is not easy to produce burrs or nicks. The force on the cut part of the pipe is balanced and stable, and it is not easy to split. The cut quality is high, which can ensure the appearance and performance of the cut.

[0020] 2. When this BWFRP power pipe cutting device cuts pipes, the size and feed rate of the cutting blade do not need to cover the outer diameter of the pipe. It only needs to be able to cut the local wall thickness of the pipe, which makes the cutting blade small and the stroke short, significantly reducing energy consumption. The energy-saving effect is even more significant when cutting large-diameter pipes.

[0021] 3. When this BWFRP power pipe cutting device cuts pipes, the cutting blade and the top block can move closer and separate, and it has a self-centering function. It can automatically adapt to pipes of different diameters, and is applicable to pipes of different diameters without the need for additional adjustment operations for different pipe diameters, which is convenient and fast.

[0022] 4. The transmission structure of this BWFRP power pipe cutting device is ingeniously and reasonably designed. When the first rotating ring rotates in one direction, the top block can first clamp and fix the pipe, and then the cutting blade cuts the pipe. When the first rotating ring rotates in the other direction, the cutting blade separates from the pipe first, and then the top block separates from the pipe. The above actions can be completed automatically, which is efficient and fast, and helps to improve the stability of equipment operation. The closing and separating actions of the cutting blade, the closing and separating actions of the top block, and the cutting work of the cutting blade are all powered by the same power unit. The component utilization rate is extremely high, the overall structure is compact and small, and the cost is low. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments 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.

[0024] Figure 1 This is a schematic diagram of the cutting device in the embodiment.

[0025] Figure 2 This is a schematic diagram of the cutting device in another direction in the embodiment.

[0026] Figure 3 This is an exploded view of the cutting device components in the embodiment.

[0027] Figure 4 This is a schematic diagram of the exploded structure of the part from another direction in the embodiment of the cutting device.

[0028] Figure 5 This is a schematic diagram of the fit between the end ring, the second rotating ring, and the shaft cylinder in the embodiment.

[0029] Figure 6 This is a schematic diagram of the structure of the end ring, the second rotating ring, and the shaft cylinder after partial cross-section in the embodiment.

[0030] Figure 7This is a schematic diagram of the structure of the first sliding pin, the first sliding body, and the cutting disc in the embodiment.

[0031] Figure 8 This is a schematic diagram of the structure of the first rotating ring and the transmission coupling part in the embodiment.

[0032] Figure 9 This is a schematic diagram of the structure of the end seat after partial cross-section in the embodiment.

[0033] Figure 10 This is a schematic diagram of the transmission coordination of the first rotating ring, the transmission coupling part, and the power device in the embodiment.

[0034] Figure 11 This diagram illustrates the process of the first rotating ring rotating along direction a, causing the cutting disc and the top block to separate sequentially.

[0035] Figure 12 This diagram illustrates the process of the first rotating ring rotating along direction b to bring the top blocks together and clamp the pipe.

[0036] Figure 13 This diagram illustrates the process of the first rotating ring rotating along direction b to bring the cutting blades together and cut the pipe.

[0037] Figure 14 This is a schematic diagram of the structure of the cutting device in the embodiment when a first cover and a second cover are provided.

[0038] Figure 15 This is a schematic diagram showing the separation state of the first cover, the second cover, and the cutting equipment in the embodiment.

[0039] Figure 16 This is a schematic diagram of the structure of the cutting equipment in the embodiment, with a feeding platform and a discharging platform.

[0040] In the diagram: 1. Machine body, 2. Output wheel, 3. End ring, 4. Shaft cylinder, 5. Cutting blade, 6. Top block, 7. First rotating ring, 8. Shaft seat, 9. End seat, 10. Power unit, 11. Guide seat, 12. Anti-slip pad, 13. Inner hole, 14. Transmission coupling part, 15. First sliding pin, 16. First sliding body, 17. One-way transmission mechanism, 171. Support plate, 172. Spring, 173. Pawl, 174. Racket tooth, 18. Second rotating ring, 19. Second slide groove, 20. First slide groove, 21. Second sliding pin, 22. Rotary connection part, 23. Fixed connection part, 24. Tool holder, 25. Radial slide groove, 26. Second sliding body, 27. Spring, 28. Transmission belt, 29. First cover, 30. Second cover, 31. Feeding platform, 32. Discharge platform. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] See Figures 1-10 As shown, this embodiment discloses a BWFRP power pipe cutting device, which includes a body 1, a power device 10 and a bearing 8 fixed on the body 1, and a horizontally extending shaft cylinder 4 that rotates with the bearing 8; the shaft cylinder 4 is cylindrical and can rotate freely around its own central axis, and the two ends of the shaft cylinder 4 are respectively located on both sides of the bearing 8.

[0043] One end of the shaft cylinder 4 is fixed with an end ring 3, which is circular in shape and coincides with the central axis of the shaft cylinder 4. Several first sliding bodies 16 capable of sliding along a straight line are installed in the end ring 3. The first sliding bodies 16 are distributed at equal angles around the central axis of the shaft cylinder 4. One end of each first sliding body 16 is located in the inner circle of the end ring 3, and a cutting blade 5 is fixed to this end via a tool holder 24. The end of the cutting blade 5 closest to the center of the end ring 3 is the cutting part. All cutting blades 5 are located on the same plane, which is perpendicular to the central axis of the shaft cylinder 4. A first sliding pin 15 is fixed to the side of each first sliding body 16, and the first sliding pin 15 is parallel to the central axis of the shaft cylinder 4. A first rotating ring 7, which is rotatably fitted onto the shaft cylinder 4, is located on one side of the end ring 3. A transmission coupling part 14 is provided on the first rotating ring 7. 4 is connected to the power device 10, thereby enabling the power device 10 to drive the first rotating ring 7 to rotate and to control the direction of rotation. The end face of the first rotating ring 7 has several first sliding grooves 20 distributed in a rotationally symmetrical manner. The number of first sliding grooves 20 and first sliding pins 15 are equal and correspond one-to-one. Each first sliding pin 15 extends into the corresponding first sliding groove 20 for sliding engagement. The two ends of the first sliding groove 20 are at different distances from the center of the first rotating ring 7. Therefore, when the first rotating ring 7 rotates relative to the end ring 3, the first sliding groove 20 will drive the first sliding body 16 to slide via the first sliding pins 15, thereby causing all the cutting pieces 5 to synchronously move towards the center or separate to the sides. When the first sliding body 16 cannot slide, since the first sliding groove 20 and the first sliding pins 15 cannot move relative to each other, the first rotating ring 7 will drive the end ring 3 to rotate synchronously.

[0044] An end seat 9 is fixed on the body 1. The end seat 9 has an inner hole 13, which is directly opposite the other end of the shaft cylinder 4. The inner hole 13 is circular and coincides with the central axis of the shaft cylinder 4. Several second sliding bodies 26 capable of sliding in a straight line are installed in the end seat 9. The second sliding bodies 26 are distributed at equal angles around the central axis of the shaft cylinder 4. One end of the second sliding body 26 is located in the inner hole 13 and is fixed with a top block 6. All top blocks 6 are located on the same plane, which is perpendicular to the central axis of the shaft cylinder 4. A second sliding pin 21 is fixed to the side of the second sliding body 26. The second sliding pin 21 is parallel to the central axis of the shaft cylinder 4. An elastic element is installed on the end seat 9 to drive the second sliding body 26 to move towards the center of the end seat 9. A second rotating ring 18 is fitted on the shaft cylinder 4. A space is provided between the second rotating ring 18 and the shaft cylinder 4. The unidirectional transmission mechanism 17 allows the second rotating ring 18 and the shaft cylinder 4 to rotate relative to each other in only one direction. The second rotating ring 18 is located on one side of the end seat 9. Several second sliding grooves 19 are provided on the end face of the second rotating ring 18 in a rotationally symmetrical distribution. The number of second sliding grooves 19 and second sliding pins 21 are equal and correspond one-to-one. Each second sliding pin 21 extends into the corresponding second sliding groove 19 for sliding engagement. The two ends of the second sliding groove 19 are at different distances from the center of the second rotating ring 18. When the second rotating ring 18 rotates relative to the end seat 9, the second sliding groove 19 will drive the second sliding body 26 to slide via the second sliding pin 21, thereby causing all the top blocks 6 to move towards the center or separate to the sides simultaneously. When the second sliding body 26 cannot slide, the second rotating ring 18 will not be able to rotate because the second sliding groove 19 and the second sliding pin 21 cannot move relative to each other.

[0045] When the first rotating ring 7 rotates in one direction, causing the cutting blade 5 to separate to the four sides, the shaft cylinder 4 rotates in that direction and drives the second rotating ring 18 to rotate synchronously via the one-way transmission mechanism 17. The second rotating ring 18 then drives the top block 6 to separate to the four sides. Conversely, when the first rotating ring 7 rotates in another direction, causing the cutting blade 5 to move closer to the center, the shaft cylinder 4 cannot transmit torque to the second rotating ring 18 via the one-way transmission mechanism 17, and thus cannot provide a driving effect for the second rotating ring 18.

[0046] The working process and principle of this BWFRP power pipe cutting device are as follows:

[0047] like Figure 11 As shown, when the first rotating ring 7 is driven by the power device to rotate in direction a:

[0048] First, based on the transmission cooperation of the first sliding pin 15, the first sliding groove 20 and the first sliding body 16, all the cutting pieces 5 will separate synchronously to the four sides. When the first sliding body 16 moves to the end of its stroke and can no longer slide, the cutting pieces 5 reach and remain in a completely separated state.

[0049] Then, since the first sliding pin 15 and the first sliding groove 20 cannot move relative to each other, the first rotating ring 7 will drive the end ring 3 and the shaft cylinder 4 to rotate synchronously. The shaft cylinder 4 drives the second rotating ring 18 to rotate synchronously through the one-way transmission mechanism 17. Under the transmission cooperation of the second sliding pin 21, the second sliding groove 19 and the second sliding body 26, all the top blocks 6 will separate synchronously to the four sides, and the elastic element will be passively compressed. When the second sliding body 26 moves to the end of the stroke and can no longer slide, the first rotating ring 7 stops rotating, and the top blocks 6 will reach and remain in a completely separated state.

[0050] Finally, since the cutting blade 5 and the top block 6 have reached the separation state one after another, the cut pipe can be taken out from between the top blocks 6, or the pipe to be cut can be passed through the shaft and placed between the top block 6 and the cutting blade 5.

[0051] Starting from the above state, when the first rotating ring 7 is driven by the power device 10 to rotate in direction b:

[0052] First, such as Figure 12 As shown, as the first rotating ring 7 rotates, the elastic potential energy of the elastic element is gradually released. Specifically, the elastic element provides power, and all the top blocks 6 move towards the center. At the same time, under the transmission and cooperation of the second sliding groove 19, the second sliding pin 21, and the second sliding body 26, the second rotating ring 18 drives the shaft cylinder 4 to rotate synchronously with the first rotating ring 7 via the one-way transmission mechanism 17. Because the first rotating ring 7 and the shaft cylinder 4 rotate synchronously during the above process, the positions of the first sliding pin 15 and the first sliding groove 20 will not change, so that the cutting blade 5 continues to maintain a completely separated state. When the top block 6 abuts against the pipe to be cut, the second sliding body 26 can no longer slide, and the second sliding groove 19, the second sliding pin 21, and the second rotating ring 18 will maintain a constant position and no longer provide driving force for the shaft cylinder 4. Under the driving action of the elastic element, all the top blocks 6 together clamp and fix the pipe.

[0053] Then, as Figure 13 As shown, as the first rotating ring 7 continues to rotate, under the transmission action of the first sliding groove 20, the first sliding pin 15 and the first sliding body 16, all the cutting blades 5 will move towards the center synchronously. When the cutting blades 5 contact the side wall of the pipe, the first sliding body 16 can no longer slide. After that, the first rotating ring 7 will drive the end ring 3 and the shaft cylinder 4 to rotate synchronously. Since the one-way transmission mechanism 17 is in the overrunning state in this direction, it will not prevent the rotation of the shaft cylinder 4.

[0054] Finally, the first rotating ring 7 increases its rotation speed, and the cutting blade 5 rotates at high speed around the side wall of the pipe to achieve cutting. During the cutting process, the cutting blade 5 always maintains a tendency to move towards the center, so as to cut the pipe quickly and efficiently.

[0055] When this BWFRP power pipe cutting device cuts the pipe, multiple cutting blades 5 are distributed around the pipe and rotate along the pipe to cut it. This achieves multi-directional, simultaneous, and balanced force on the pipe wall. This cutting method is highly efficient, produces a neat cut, and is less prone to burrs or nicks, as well as splitting. The cut quality is high, ensuring aesthetics and usability. During the cutting process, the top block 6 provides stable support to the pipe from one side of the cutting blades 5, effectively suppressing vibration and displacement of the pipe during cutting, further improving cutting quality and the operational stability of the cutting blades 5.

[0056] When this BWFRP power pipe cutting device cuts pipes, the size and feed rate of the cutting blade 5 do not need to cover the outer diameter of the pipe. It only needs to be able to cut the local wall thickness of the pipe. The cutting blade 5 is small in size and has a short stroke, so the idle stroke ratio is fully compressed, which significantly reduces energy consumption. The energy-saving effect is even more significant when cutting large-diameter pipes.

[0057] When this BWFRP power pipe cutting device cuts pipes, multiple cutting blades 5 and multiple top blocks 6 can move together and separate synchronously. It has a self-centering function and can automatically adapt to pipes of different diameters. It is suitable for pipes of different diameters and does not require additional adjustment for different pipe diameters, making it convenient and fast.

[0058] In the structure adopted by this BWFRP power pipe cutting device, based on the ingenious and reasonable transmission structure design, the approaching and separating action of the cutting blade 5, the approaching and separating action of the top block 6, and the cutting work of the cutting blade 5 are all powered by the same power unit 10. The component utilization rate is high, making the overall structure of this BWFRP power pipe cutting device compact and low in cost.

[0059] Furthermore, such as Figures 1-4 As shown, in the BWFRP power pipe cutting device, the bearing 8 is composed of two semi-circular parts, which are distributed vertically, with the lower part being fixedly connected to the body 1.

[0060] Furthermore, such as Figure 3 , Figure 8 , Figure 10 As shown, in the BWFRP power pipe cutting device, the transmission coupling part 14 is a ring-shaped driven wheel. The driven wheel is fixed to one side of the first rotating ring 7 and the central axes of the two coincide. The power device 10 outputs power through an output wheel 2. The driven wheel and the output wheel 2 are connected by transmission. In the specific implementation process, the driven wheel and the output wheel 2 can adopt a pulley structure design and achieve transmission connection through the transmission belt 28. Alternatively, the power transmission between the driven wheel and the output wheel 2 can be achieved based on chain transmission, gear transmission, or other methods.

[0061] Furthermore, such as Figures 3-6 As shown, in the BWFRP power pipe cutting device, the end ring 3 is provided with a plurality of radial grooves 25, and the first sliding body 16 is installed in the radial grooves 25 and the two slide in cooperation; the direction of the first groove 20 is an arc or a spiral, thereby enabling better transmission performance between the first sliding pin 15, the first groove 20 and the first sliding body 16.

[0062] Furthermore, such as Figure 3 , Figure 4 , Figure 9 As shown, in the BWFRP power pipe cutting device, a plurality of guide seats 11 are fixed on the end seat 9. The guide seat 11 has a cylindrical cavity communicating with the inner hole 13 of the end seat 9. The cylindrical cavity extends radially along the inner hole 13. The second sliding body 26 is installed in the cylindrical cavity of the guide seat 11 and the two slide in cooperation. The elastic element is a spring 27, which is installed in the guide seat 11. The direction of the second sliding groove 19 is arc or spiral, thereby giving the second sliding pin 21, the second sliding groove 19 and the second sliding body 26 better transmission performance.

[0063] Furthermore, such as Figure 2 , Figure 4 , Figure 9 As shown, in the BWFRP power pipe cutting device, the end seat 9 near the shaft cylinder 4 is provided with a rotating connection part 22, which is rotatably connected to the corresponding end of the shaft cylinder 4; thus, the end seat 9 can provide support for one end of the shaft cylinder 4, improving the working stability of the shaft cylinder 4; at the same time, the end seat 9 near the shaft seat 8 is provided with a fixed connection part 23, which is fixedly connected to the corresponding end of the shaft seat 8; there is an accommodating space between the end seat 9 and the shaft seat 8 for accommodating the second rotating ring 18 and the one-way transmission mechanism 17; thus, the second rotating ring 18 and the one-way transmission mechanism 17 are installed in the relatively closed accommodating space between the shaft seat 8 and the end seat 9, making the operation more stable and safe.

[0064] Furthermore, such as Figure 3 , Figure 4 As shown, in the BWFRP power pipe cutting device, the first rotating ring 7 is located between the end ring 3 and the shaft seat 8, and the second rotating ring 18 is located between the end seat 9 and the shaft seat 8.

[0065] Furthermore, such as Figure 2 , Figure 9 As shown, in the BWFRP power pipe cutting device, an anti-slip pad 12 is fixed at one end of the top block 6 near the center of the end seat 9, which can improve the clamping effect of the top block 6 on the pipe and avoid damage to the outer wall of the pipe.

[0066] In the BWFRP power pipe cutting device, the one-way transmission mechanism 17 can be implemented using conventional methods in the prior art, such as one-way bearings or ratchet mechanisms. The preferred embodiment provided by the present invention is as follows:

[0067] See Figures 3-5 As shown, the one-way transmission mechanism 17 includes a support plate 171, a pawl 173, a spring piece 172, and a ratchet 174. The support plate 171 is fixed on the shaft cylinder 4, and the ratchet 174 is formed on the outer peripheral wall of the second rotating ring 18. The pawl 173 and the spring piece 172 are provided in one or more sets and installed on the support plate 171. They cooperate with the ratchet 174 to form a ratchet and pawl 173 mechanism to realize the one-way transmission function. In the implementation process, the support plate 171 can be finned and multiple can be provided to provide support for each pawl 173. The support plate 171 can also be annular to enhance the overall strength.

[0068] In another embodiment, such as Figure 14 , Figure 15 As shown, the BWFRP power pipe cutting device includes a first cover 29, which is fixedly connected to the body 1 and covers the outside of the end ring 3 and the first rotating ring 7. The first cover 29 has side holes so that the end face of the end ring 3 away from the shaft cylinder 4 is exposed to the outside. Thus, the first cover 29 can provide protection for the end ring 3 and the first rotating ring 7, preventing foreign objects from affecting the working stability of the equipment, and also preventing the end ring 3 and the first rotating ring 7, which are rotating parts, from causing mechanical injury to personnel. Furthermore, the BWFRP power pipe cutting device also includes a second cover 30, which is fixedly connected to the body 1 and covers the outside of the power unit 10 for safety protection.

[0069] In another embodiment, such as Figure 16 As shown, the BWFRP power pipe cutting device includes a feeding platform 31 and a discharging platform 32. The feeding platform 31 and the discharging platform 32 are respectively opposite to the two ends of the shaft cylinder 4. The feeding platform 31 is used to feed the pipe to be cut into the cutting device and to adjust the cutting position. The discharging platform 32 is used to receive the cut pipe and drive the cut pipe out.

[0070] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0072] 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.

Claims

1. A BWFRP power pipe cutting device, comprising a body, on which a power unit and a shaft seat are fixed, characterized in that: A shaft cylinder is provided on the shaft seat; an end ring is fixed to one end of the shaft cylinder, and several first sliding bodies are installed in the end ring. One end of each first sliding body is located in the inner circle of the end ring and a cutting blade is fixed thereon. A first sliding pin is fixed to the side of each first sliding body. A first rotating ring and a second rotating ring are fitted on the shaft cylinder for rotational engagement. The first rotating ring is connected to the power device via a transmission coupling part. The first rotating ring has a first sliding groove that slides in one-to-one with the first sliding pin. When the first rotating ring rotates relative to the end ring, the first sliding groove drives the first sliding body to slide via the first sliding pin, so that all the cutting blades move closer or separate synchronously. An end seat is fixed on the machine body. The end seat has an inner hole that faces the other end of the shaft cylinder. Several cutting blades are installed in the end seat. The second sliding body and the elastic element that drives the second sliding body to move towards the center of the end seat. One end of the second sliding body is located in the inner hole and a top block is fixed thereon. A second sliding pin is fixed to the side of the second sliding body. A one-way transmission mechanism is provided between the second rotating ring and the shaft cylinder. A second sliding groove is provided on the second rotating ring to slide in a sliding fit with the second sliding pin. When the second rotating ring rotates relative to the end seat, the second sliding groove will drive the second sliding body to slide through the second sliding pin, so that all the top blocks move closer or separate synchronously. When the first rotating ring rotates in one direction and drives the cutting blade to separate in all directions, the shaft cylinder will rotate in that direction and drive the second rotating ring to rotate synchronously through the one-way transmission mechanism. The second rotating ring will drive the top blocks to separate.

2. The BWFRP power pipe cutting device according to claim 1, characterized in that: The end ring is circular, and the central axis of the end ring and the shaft cylinder coincides. All the first sliding bodies are distributed at equal angles with the central axis of the shaft cylinder as the center. All the cutting blades are located on the same plane and the plane is perpendicular to the central axis of the shaft cylinder.

3. The BWFRP power pipe cutting device according to claim 1, characterized in that: The inner hole is circular and coincides with the central axis of the shaft cylinder. All the second sliding bodies are distributed at equal angles with the central axis of the shaft cylinder as the center. All the top blocks are located on the same plane and the plane is perpendicular to the central axis of the shaft cylinder.

4. The BWFRP power pipe cutting device according to claim 1, characterized in that: The bearing seat is composed of two semi-circular parts, which are distributed vertically, with the lower part being fixedly connected to the machine body.

5. The BWFRP power pipe cutting device according to claim 1, characterized in that: The transmission coupling part is a ring-shaped driven wheel, which is fixed to one side of the first rotating ring and the central axes of the two coincide. The power device outputs power through an output wheel, and the driven wheel is connected to the output wheel in a transmission connection.

6. The BWFRP power pipe cutting device according to claim 1, characterized in that: The end ring is provided with a plurality of radial grooves, and the first sliding body is installed in the radial grooves and the two slide in cooperation; the first grooves are curved or spiral.

7. The BWFRP power pipe cutting device according to claim 1, characterized in that: The end seat is fixed with several guide seats. The guide seats have cylindrical cavities that communicate with the inner hole of the end seat and extend radially along the inner hole. The second sliding body is located in the cylindrical cavity and the two slide in cooperation. The elastic element is a spring and is installed in the guide seat. The direction of the second sliding groove is an arc or a spiral.

8. The BWFRP power pipe cutting device according to claim 1, characterized in that: The end of the end seat near the shaft cylinder is provided with a rotatable connection part, which is rotatably connected to the corresponding end of the shaft cylinder; the end of the end seat near the shaft seat is provided with a fixed connection part, which is fixedly connected to the corresponding end of the shaft seat; and there is an accommodating space between the end seat and the shaft seat for accommodating the second rotating ring and the one-way transmission mechanism.

9. The BWFRP power pipe cutting device according to claim 1, characterized in that: The first rotating ring is located between the end ring and the shaft seat, and the second rotating ring is located between the end seat and the shaft seat.

10. The BWFRP power pipe cutting device according to claim 1, characterized in that: The one-way transmission mechanism includes a support plate, a pawl, a spring, and a ratchet. The support plate is fixed on the shaft cylinder, and the ratchet is located on the second rotating ring. One or more sets of pawls and springs are provided and installed on the support plate, cooperating with the ratchet to form a ratchet and pawl mechanism.

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