A large-diameter pipe cutting machine

Abstract

The utility model relates to pipe cutting technical field more specifically, relate to a large -diameter pipe cutting machine, include: first support, pipe moving component, lifting assembly, limiting component, clamping assembly, shift loading component, cutting assembly, pipe moving component is used for placing pipe and the auxiliary pipe moves to limiting component, limiting component is used for the location of pipe, clamping assembly is used for from the both sides of pipe to the pipe clamping. Utilize pipe moving component and move pipe to lifting assembly or limiting component, when lifting assembly drives pipe to lift, limiting component always carries out the location of pipe, avoid pipe to shake, after pipe hoisting in place, clamping assembly also can further to the pipe clamping, when cutting pipe, can fully avoid pipe to shake, cooperate shift loading component and cutting assembly, satisfy heavy -duty pipe's hoisting transfer demand and steady clamping cutting demand.

Description

Technical Field

[0001] This utility model relates to the field of pipe cutting technology, and more specifically, to a large-diameter pipe cutting machine. Background Technology

[0002] In the field of modern pipeline engineering, large-diameter pipelines are widely used in key scenarios such as municipal water supply and drainage, urban centralized heating, long-distance oil and gas transportation, industrial circulating water transportation, and agricultural irrigation main pipelines. With the acceleration of urbanization, the expansion of large-scale industrial projects, and the surge in demand for infrastructure upgrades, traditional pipeline materials (such as metal pipes, pure plastic pipes, and ordinary composite pipes) are gradually revealing their performance shortcomings. Various types of high-strength steel wire mesh reinforced composite pipes, with their composite advantages of "metal skeleton reinforcement + corrosion-resistant polymer materials," have become an important development direction for large-diameter pipelines. Due to their larger diameter, multiple composite layers, and the inclusion of a metal mesh skeleton, these large-diameter pipelines are not only stronger but also very heavy. When processing is required, lifting equipment is generally used to transfer the pipes, and then cutting equipment is used to cut them.

[0003] Currently, the cutting equipment widely used in industrial production generally suffers from overly simplistic structural designs. This is especially true when dealing with the cutting of large-diameter pipes that require hoisting operations. These devices have significant performance shortcomings, such as cumbersome operation and poor cutting results, and cannot adequately meet the needs of cutting large-diameter heavy pipes. Furthermore, there is a relative lack of specialized cutting equipment for such heavy pipes on the market, and there is a shortage of easy-to-use cutting equipment. Utility Model Content

[0004] To overcome the shortcomings of the prior art in lacking cutting equipment suitable for large-diameter heavy composite pipes, this utility model provides a large-diameter pipe cutting machine to meet the cutting needs of large-diameter heavy composite pipes.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a large-diameter pipe cutting machine, comprising: a first support, a plurality of pipe moving components respectively disposed beside the first support, a lifting component connected to the first support, a limiting component disposed on the lifting end of the lifting component, a clamping component disposed on the upper part of the first support or on the lifting end of the lifting component, a transfer component disposed on the top of the first support, and a cutting component disposed on the moving end of the transfer component. The pipe moving components are used to place the pipe and assist the pipe in moving to the limiting component. The limiting component is used to limit the pipe. The clamping component is used to clamp the pipe from both sides.

[0006] The pipe moving assembly is used to receive and transport pipes. Multiple pipe moving assemblies are spaced apart next to the first support. After the external lifting equipment transfers the pipes, they are placed directly on the pipe moving assembly. Specifically, the pipe moving assembly adopts a powered or unpowered conveying structure. The powered conveying structure can refer to existing pipe conveying equipment. When using an unpowered conveying structure, the pipes are manually pushed onto the lifting assembly. During the process of the pipes moving to the lifting assembly, and during the process of the lifting assembly lifting the pipes, the limiting component on the lifting assembly always limits the pipes. During the movement of the pipes, they will slide relative to the working end of the limiting component. Therefore, the working end of the limiting component is preferably set as an arc surface structure or a cylindrical rolling structure to avoid... To prevent scratching the pipes, during the entire process of the pipe moving from the pipe moving component to the limiting component, depending on the different settings, there are at least two ways for the pipes to move. One is that the pipes move entirely on the pipe moving component. After moving to the correct position, the pipes remain on the pipe moving component until the lifting component raises and lifts the pipes to the upper set position for cutting. The other is to set a structure on the lifting component and / or the limiting component that allows the pipes to move, such as rollers or drums. During the movement of the pipes, the pipe moving component moves to the lifting component and / or the limiting component. After moving to the correct position, the pipes are separated from the pipe moving component, and then the lifting component directly lifts the pipes to the set position for cutting.

[0007] The clamping assembly is located on the lifting end of the lifting assembly or on the upper part of the first bracket. When cutting the pipe, the clamping assembly clamps the pipe from both sides to prevent the pipe from rolling left and right and to reduce the vibration of the pipe itself, thereby indirectly improving the cutting accuracy. The transfer assembly is used to drive the cutting assembly to move and cut. Depending on the pipe cutting requirements, the transfer assembly has at least two movement modes: circumferential movement or axial movement around the pipe to cut the pipe or to cut the top and side. The cutting assembly is located at the top. When performing axial cutting, cutting from the top can prevent the cutting assembly from being pressed by the pipe and prevent the pipe from pressing down, thus avoiding any impact on the cutting assembly. When performing circumferential cutting, i.e., cutting off, starting from the top also allows for better observation of the working status of the cutting assembly.

[0008] Based on the above settings, this cutting machine can cut heavy pipes. During operation, the external lifting device moves the pipe onto the pipe moving assembly, which then moves the pipe onto the lifting assembly. During this process, the limiting assembly limits the pipe to prevent it from rolling laterally. After the pipe moves onto the limiting assembly, if the clamping assembly is located on the lifting assembly, it clamps the pipe first, and then the lifting assembly lifts the pipe. If the clamping assembly is located on the upper part of the first support, the pipe is lifted to the set position, and then the clamping assembly clamps the pipe. After the pipe is clamped and stabilized, the transfer assembly drives the cutting assembly to cut the pipe, thus completing the pipe cutting operation.

[0009] Preferably, the limiting component includes a second bracket disposed on the lifting end of the lifting component, a first sliding frame slidably connected to the second bracket, an abutment disposed on the first sliding frame, and a first fixing member connected to the first sliding frame. The first sliding frame is disposed on both sides of the second bracket. The abutment is used to abut against the pipe for limiting the movement. The first fixing member is used to fix the first sliding frame on the second bracket.

[0010] The second bracket is fixed on the lifting end of the lifting assembly. There are at least two first sliding frames, which are respectively set on both sides of the second bracket. The pipe is then abutted and limited by abutting parts. The abutting parts move with the first sliding frames to adjust the interval between the abutting parts to accommodate pipes of different diameters. The number of first fixing parts corresponds to the number of first sliding frames. The first fixing parts can be selected by threaded tightening abutment or pin insertion. When using pins, the insertion position of the pins is set according to the commonly used production pipe diameter. That is, each pin fixing position corresponds to the pipe diameter to be produced, which is convenient for switching. Depending on the length of the pipe, at least one first sliding frame is set on one side of the second bracket. If the pipe is too long, two or more first sliding frames are set on one side of the second bracket. Then, the first sliding frames on both sides of the second bracket work in pairs.

[0011] Preferably, the limiting component further includes a first driving component connected to the second bracket, a first gear disposed on the driving end of the first driving component, and first racks disposed on both sides of the first gear. The first gear meshes with the first racks, the first racks are slidably connected to the second bracket, and the first racks are fixedly connected to the first sliding frame.

[0012] The first gear simultaneously drives the first racks on both sides, allowing the corresponding two first sliding frames to move synchronously towards the center or sides, thus maintaining the limiting center unchanged for convenient use. The number of first racks is the same as the number of first sliding frames. The first drive assembly and the first gear are set according to the number of groups of first sliding frames, with one first drive assembly and one first gear for each group. The first drive assembly is driven by a motor or a handwheel.

[0013] Preferably, the abutment is a cylindrical part and is rotatably connected to the first sliding frame. The abutment is inclined as a whole and abuts and supports the lower side of the pipe.

[0014] The abutment is designed as a rotatable cylindrical part, which facilitates the movement of the pipe. The cylindrical part, i.e., the abutment, is tilted as a whole, which serves as a limit. The abutments on both sides work together to provide support. It can be used as a moving structure for the pipe. During the movement of the pipe, it moves from the pipe moving component to the abutment, which is equivalent to moving to the lifting component. The lifting component rises directly to lift the pipe. This belongs to the second type of pipe moving scheme mentioned above. During the movement and lifting process, the pipe is more stable as a whole.

[0015] Preferably, the clamping assembly includes a fixed plate disposed on the upper part of the first bracket or the lifting end of the lifting assembly, a second sliding frame slidably connected to the fixed plate, a second driving assembly connected to the fixed plate, a telescopic member disposed on the second sliding frame, a clamping bracket disposed on the telescopic end of the telescopic member, a clamping block slidably connected vertically to the clamping bracket, and a second fixing member connected to the clamping block. The second driving assembly has a locking function and is used to drive the second sliding frame to move. The second fixing member is used to fix the clamping block on the clamping bracket. The clamping assembly is symmetrically disposed on both sides of the first bracket.

[0016] The clamping components are symmetrically arranged on both sides of the first bracket. The clamping components on both sides are used in groups and work synchronously. The telescopic component drives the clamping block to extend and clamp the pipe. The second drive component is used to drive the second sliding frame to move, which in turn drives the clamping block to move and adjust. When the clamping bracket moves relative to the telescopic component, it can also drive the clamping block to move, thereby realizing the adjustment of the clamping block in two directions to meet the clamping of pipes of different sizes. The second drive component has a locking function, that is, the drive end of the second drive component can be locked after moving, so that the second sliding frame and clamping block and other components can remain fixed after the position is adjusted. The specific structure can refer to the existing transfer equipment, or a trapezoidal screw with a self-locking function can be used for transmission.

[0017] Preferably, the second driving assembly includes a trapezoidal lead screw rotatably connected to the fixed plate, a first driving member connected to the trapezoidal lead screw, and a slider fitted on the trapezoidal lead screw. The slider is fixedly connected to the second sliding frame, and the trapezoidal lead screw is axially fixed relative to the fixed plate.

[0018] A trapezoidal lead screw is used for transmission to achieve self-locking after the second sliding frame moves, reducing the requirements for the selection of the first driving component. The first driving component drives the trapezoidal lead screw to rotate relative to the fixed plate. The slider is constrained on the second sliding frame, and the trapezoidal lead screw is axially fixed relative to the fixed plate. Therefore, rotation can drive the slider and the second sliding frame to move. The first driving component can be a motor or a handwheel.

[0019] Preferably, the transfer assembly includes a transverse support disposed on the top of the first support, at least two guide rails disposed on the transverse support, a support plate slidably connected to the guide rails, and a third drive assembly disposed on the support plate. The drive end of the third drive assembly is connected to the first support or the transverse support, and the third drive assembly is used to drive the support plate to move. The cutting assembly is mounted on the support plate.

[0020] The horizontal support is mounted on the first support at both ends. The support plate moves relative to the guide rail. At least two guide rails are set to ensure the stability and accuracy of the movement of the cutting component. When the third drive component is working, it drives the third drive component itself, the support plate, the cutting component and other components to move together. The third drive component preferably uses a gear and rack structure for driving.

[0021] Preferably, the cutting assembly includes a first drive motor and a reducer respectively disposed on the moving end of the transfer assembly, a transmission assembly connected to the drive end of the first drive motor, and a cutter disc disposed on the output end of the reducer, wherein the output end of the transmission assembly is connected to the input end of the reducer.

[0022] The first drive motor drives the transmission assembly, which in turn drives the reducer, which in turn drives the cutter head. The reducer is preferably a single-stage horizontal cycloidal pinwheel reducer. The transmission assembly uses either a chain and sprocket structure or a belt and pulley structure, with a belt and pulley structure being preferred.

[0023] Preferably, the lifting assembly includes a lifting frame that is vertically slidably connected to the first bracket, a second drive motor connected to the lifting frame, two rotating shafts respectively connected to the output shafts of the second drive motor, second gears respectively disposed on the rotating shafts, and two second racks respectively fixed on the first bracket, wherein the second gears mesh with the second racks, and the two second racks are respectively located on both sides of the lifting frame.

[0024] The second drive motor is fixed on the lifting frame and drives the second gear to rotate. The second gear rolls on the second rack, thereby driving the second drive motor and the lifting frame and other components to rise and fall. Furthermore, the second drive motor has two output shafts through a reduction gearbox or reducer. The two output shafts are respectively equipped with second gears. The two second gears mesh with the second racks on both sides of the lifting frame to improve the lifting stability of the lifting frame.

[0025] Preferably, the pipe moving assembly includes a floor frame disposed next to the first support and a support roller rotatably connected to the floor frame. The outer side of the support roller is provided with an annular groove for placing the pipe. The floor frame is a fixed structure or a liftable structure.

[0026] The support roller is horizontally mounted on the floor frame and rotatably connected to it. An annular groove is provided on the side of the support roller to restrain the tubing and prevent it from rolling laterally after being placed on the support roller. The annular groove has a V-shaped or U-shaped cross-section. When the floor frame is designed as a height-adjustable structure, a corresponding locking mechanism is provided, such as a pin or screw.

[0027] Compared with the prior art, the beneficial effects of this utility model are: The pipe moving component is used to support and place the pipe, and provides a moving structure for the pipe to move onto the lifting component or the limiting component. When the lifting component moves the pipe up and down, the limiting component always limits the pipe to prevent it from shaking. After the pipe is raised to the correct position, the clamping component will further clamp the pipe. When cutting the pipe, it can effectively prevent the pipe from shaking. Together with the transfer component and the cutting component, it meets the needs of hoisting and transferring heavy pipes as well as the needs of stable clamping and cutting. In the entire production process, only the pipe needs to be assisted in positioning when it is placed. The subsequent lifting and cutting processes can be completed automatically by the equipment. The operation is simple and the cutting effect is good. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the working structure of a large-diameter pipe cutting machine according to this utility model; Figure 2 This is a schematic diagram of the installation structure of the lifting assembly and the limiting assembly of a large-diameter pipe cutting machine according to this utility model. Figure 3 This is a schematic diagram of the lifting assembly structure of a large-diameter pipe cutting machine according to this utility model; Figure 4 This is a schematic diagram of the limiting component structure of a large-diameter pipe cutting machine according to this utility model; Figure 5 This is a schematic diagram of the pipe moving component structure of a large-diameter pipe cutting machine according to this utility model; Figure 6 This is a schematic diagram of the clamping component structure of a large-diameter pipe cutting machine according to this utility model; Figure 7 This is a side view structural diagram of the clamping assembly of a large-diameter pipe cutting machine according to this utility model; Figure 8 This is a schematic diagram of the transfer component structure of a large-diameter pipe cutting machine according to this utility model.

[0029] Figure 9 This is a top view structural diagram of the cutting component of a large-diameter pipe cutting machine according to this utility model.

[0030] In the picture: 1. First support; 101. Limiting support; 2. Pipe moving assembly; 201. Floor frame; 202. Support rollers; 203. Annular groove; 3. Lifting assembly; 301. Lifting frame; 302. Second drive motor; 303. Rotating shaft; 304. Second gear; 305. Second rack; 4. Limiting component; 401. Second bracket; 402. First sliding frame; 403. Abutment; 404. First fixing component; 405. First driving component; 406. First gear; 407. First rack; 5. Clamping assembly; 501. Fixing plate; 502. Second sliding frame; 503. Second drive assembly; 5031. Trapezoidal lead screw; 5032. First drive component; 504. Telescopic component; 505. Clamping bracket; 506. Clamping block; 507. Second fixing component; 6. Transfer assembly; 601. Horizontal support; 602. Guide rail; 603. Support plate; 604. Third drive assembly; 7. Cutting assembly; 701. First drive motor; 702. Reducer; 703. Transmission assembly; 704. Cutter head. Detailed Implementation

[0031] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0032] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example 1 like Figure 1 As shown, a large-diameter pipe cutting machine includes: a first support 1, a plurality of pipe moving components 2 respectively disposed beside the first support 1, a lifting component 3 connected to the first support 1, a limiting component 4 disposed on the lifting end of the lifting component 3, a clamping component 5 disposed on the upper part of the first support 1 or on the lifting end of the lifting component 3, a transfer component 6 disposed on the top of the first support 1, and a cutting component 7 disposed on the moving end of the transfer component 6. The pipe moving components 2 are used to place the pipe and assist the pipe in moving to the limiting component 4. The limiting component 4 is used to limit the pipe. The clamping component 5 is used to clamp the pipe from both sides.

[0034] Pipe moving assembly 2 is used to receive and transport pipes. Multiple pipe moving assemblies 2 are spaced apart next to the first support 1. After the external lifting device transfers the pipes, they are placed directly on the pipe moving assembly 2. Specifically, the pipe moving assembly 2 adopts a powered or unpowered conveying structure. The powered conveying structure can refer to existing pipe conveying equipment. When using an unpowered conveying structure, the pipes are manually pushed onto the lifting assembly 3. During the process of the pipes moving to the lifting assembly 3, and during the process of the lifting assembly 3 lifting the pipes, the limiting component 4 on the lifting assembly 3 always limits the pipes. During the movement of the pipes, they will slide relative to the working end of the limiting component 4. Therefore, the working end of the limiting component 4 is preferably set as an arc surface structure or a columnar rolling structure to avoid... To prevent scratching the pipes, during the entire process of the pipe moving from the pipe moving component 2 to the limiting component 4, depending on the different settings, there are at least two ways for the pipes to move. One is that the pipes move entirely on the pipe moving component 2. After moving to the correct position, the pipes remain on the pipe moving component 2 until the lifting component 3 rises and lifts the pipes to the upper set position for cutting. The other is that the lifting component 3 and / or the limiting component 4 are equipped with structures that allow the pipes to move, such as rollers or drums. During the pipe movement, the pipes move from the pipe moving component 2 to the lifting component 3 and / or the limiting component 4. After moving to the correct position, the pipes are separated from the pipe moving component 2. Then, the lifting component 3 directly lifts the pipes to the set position for cutting.

[0035] The clamping component 5 is set on the lifting end of the lifting component 3 or on the upper part of the first bracket 1. When cutting the pipe, the clamping component 5 clamps the pipe from both sides to prevent the pipe from rolling left and right and to reduce the vibration of the pipe itself, thereby indirectly improving the cutting accuracy of the pipe. The transfer component 6 is used to drive the cutting component 7 to move and cut. Depending on the pipe cutting requirements, the transfer component 6 has at least two movement modes, namely, circumferential movement or axial movement around the pipe to cut the pipe or to cut the top and side. The cutting component 7 is set at the top. When performing axial cutting, cutting from the top can prevent the cutting component 7 from being pressed by the pipe and prevent the pipe from pressing down, thus avoiding any impact on the cutting component 7. When performing circumferential cutting, i.e., cutting off, starting from the top can also better observe the working status of the cutting component 7.

[0036] Based on the above settings, this cutting machine can cut heavy pipes. During operation, the external lifting device moves the pipe onto the pipe moving component 2, which then moves the pipe onto the lifting component 3. During this process, the limiting component 4 limits the pipe to prevent it from rolling laterally. After the pipe moves onto the limiting component 4, if the clamping component 5 is located on the lifting component 3, the clamping component 5 clamps the pipe first, and then the lifting component 3 lifts the pipe. If the clamping component 5 is located on the upper part of the first support 1, the pipe is lifted to the set position, and then the clamping component 5 clamps the pipe. After the pipe is clamped and stabilized, the transfer component 6 drives the cutting component 7 to cut the pipe, thus completing the pipe cutting operation.

[0037] The beneficial effects of this embodiment are as follows: The pipe moving component 2 is set up to support and place the pipe, and provides a moving structure for the pipe, so that the pipe can be moved to the lifting component 3 or the limiting component 4. When the lifting component 3 drives the pipe to rise and fall, the limiting component 4 always limits the pipe to prevent the pipe from shaking. After the pipe is lifted into place, the clamping component 5 will further clamp the pipe. When cutting the pipe, the pipe can be effectively prevented from shaking. In conjunction with the transfer component 6 and the cutting component 7, the requirements for hoisting and transferring heavy pipes as well as the requirements for stable clamping and cutting are met. In the entire production process, only the pipe needs to be assisted in positioning when placing the pipe. The subsequent lifting and cutting processes can be completed automatically by the equipment. The operation is simple and the cutting effect is good.

[0038] Example 2 This embodiment further defines the features of Embodiment 1, and its difference from Embodiment 1 lies in: like Figure 2 and Figure 4As shown, the limiting component 4 includes a second bracket 401 disposed on the lifting end of the lifting component 3, a first sliding frame 402 slidably connected to the second bracket 401, an abutment 403 disposed on the first sliding frame 402, and a first fixing member 404 connected to the first sliding frame 402. The first sliding frame 402 is disposed on both sides of the second bracket 401. The abutment 403 is used to abut against the pipe for limiting, and the first fixing member 404 is used to fix the first sliding frame 402 on the second bracket 401. The limiting component 4 also includes a first driving component 405 connected to the second bracket 401, a first gear 406 disposed on the driving end of the first driving component 405, and first racks 407 disposed on both sides of the first gear 406. The first gear 406 meshes with the first racks 407. The first racks 407 are slidably connected to the second bracket 401 and fixedly connected to the first sliding frame 402. The abutment member 403 is a cylindrical component and is rotatably connected to the first sliding frame 402. The abutment member 403 is inclined as a whole and abuts and supports the lower side of the pipe. Figure 6-7 As shown, the clamping assembly 5 includes a fixed plate 501 disposed on the upper part of the first bracket 1 or the lifting end of the lifting assembly 3, a second sliding frame 502 slidably connected to the fixed plate 501, a second driving assembly 503 connected to the fixed plate 501, a telescopic member 504 disposed on the second sliding frame 502, a clamping bracket 505 disposed on the telescopic end of the telescopic member 504, a clamping block 506 vertically slidably connected to the clamping bracket 505, and a second fixing member 507 connected to the clamping block 506. The second driving assembly 503 has a locking function and is used to drive the second sliding frame 502 to move. The second fixing member 507 is used to fix the clamping block 506 on the clamping bracket 505. The clamping assembly 5 is symmetrically disposed on both sides of the first bracket 1. The second drive assembly 503 includes a trapezoidal lead screw 5031 rotatably connected to the fixed plate 501, a first drive member 5032 connected to the trapezoidal lead screw 5031, and a slider fitted on the trapezoidal lead screw 5031. The slider is fixedly connected to the second sliding frame 502, and the trapezoidal lead screw 5031 is axially fixed relative to the fixed plate 501.

[0039] The second bracket 401 is fixed on the lifting end of the lifting assembly 3. At least two first sliding frames 402 are provided, respectively located on both sides of the second bracket 401. The pipe is then abutted and limited by the abutting members 403. The abutting members 403 move with the first sliding frames 402 to adjust the interval between the abutting members 403 to accommodate pipes of different diameters. The number of first fixing members 404 corresponds to the number of first sliding frames 402. The first fixing members 404 can be selected by threaded tightening abutment or pin insertion. When using pins, the insertion position of the pins is set according to the commonly used production pipe diameter, that is, each pin fixing position corresponds to the pipe diameter to be produced, which is convenient for switching. Depending on the length of the pipe, at least one first sliding frame 402 is provided on one side of the second bracket 401. If the pipe is too long, two or more first sliding frames 402 are provided on one side of the second bracket 401. Then, the first sliding frames 402 on both sides of the second bracket 401 work in pairs. The first gear 406 simultaneously drives the first racks 407 on both sides, allowing the corresponding two first sliding frames 402 to move synchronously towards the center or sides, thus maintaining the limiting center unchanged for convenient use. The number of first racks 407 is the same as the number of first sliding frames 402. The first drive assembly 405 and the first gear 406 are set according to the number of groups of first sliding frames 402, with one first drive assembly 405 and one first gear 406 for each group. The first drive assembly 405 is driven by a motor or handwheel. The abutment 403 is a rotatable cylindrical part, which facilitates the movement of the pipe. The cylindrical part, i.e., the abutment 403, is tilted as a whole, which serves as a limiting function. The abutments 403 on both sides work together to provide support, serving as a moving structure for the pipe. During the movement of the pipe, it moves from the pipe moving assembly 2 to the abutment 403, which is equivalent to moving to the lifting assembly 3. The lifting assembly 3 rises directly, driving the pipe upward. This belongs to the second type of pipe moving scheme mentioned above. During the movement and lifting process, the pipe is more stable overall. The clamping components 5 are symmetrically arranged on both sides of the first bracket 1. The clamping components 5 on both sides are used in groups and work synchronously. The telescopic member 504 drives the clamping block 506 to extend and clamp the pipe. The second drive component 503 is used to drive the second sliding frame 502 to move, thereby driving the clamping block 506 to move and adjust. When the clamping bracket 505 moves relative to the telescopic member 504, it can also drive the clamping block 506 to move, thereby realizing the adjustment of the clamping block 506 in two directions to meet the clamping of pipes of different sizes. The second drive component 503 has a locking function, that is, after the driving end of the second drive component 503 moves, it can be locked so that the second sliding frame 502 and the clamping block 506 can remain fixed after the position is adjusted. The specific structure can refer to the existing transfer equipment, or a trapezoidal screw with a self-locking function can be used for transmission.A trapezoidal lead screw 5031 is used for transmission to achieve self-locking after the second sliding frame 502 moves, reducing the selection requirements of the first driving component 5032. The first driving component 5032 drives the trapezoidal lead screw 5031 to rotate relative to the fixed plate 501. The slider is restricted on the second sliding frame 502, and the trapezoidal lead screw 5031 is axially fixed relative to the fixed plate 501. Therefore, rotation can drive the slider and the second sliding frame 502 to move. The first driving component 5032 can be a motor or a handwheel.

[0040] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0041] Example 3 Based on Example 1 or Example 2, Example 1 or Example 2 are further defined, with the following differences: like Figure 8 As shown, the transfer assembly 6 includes a transverse support 601 disposed on the top of the first support 1, at least two guide rails 602 disposed on the transverse support 601, a support plate 603 slidably connected to the guide rails 602, and a third drive assembly 604 disposed on the support plate 603. The drive end of the third drive assembly 604 is connected to the first support 1 or the transverse support 601, and the third drive assembly 604 is used to drive the support plate 603 to move. The cutting assembly 7 is mounted on the support plate 603. Figure 9 As shown, the cutting assembly 7 includes a first drive motor 701 and a reducer 702 respectively disposed on the moving end of the transfer assembly 6, a transmission assembly 703 connected to the driving end of the first drive motor 701, and a cutter disc 704 disposed on the output end of the reducer 702. The output end of the transmission assembly 703 is connected to the input end of the reducer 702. Figure 2 and Figure 4 As shown, the lifting assembly 3 includes a lifting frame 301 vertically slidably connected to the first bracket 1, a second drive motor 302 connected to the lifting frame 301, two rotating shafts 303 respectively connected to the output shafts of the second drive motors 302, second gears 304 respectively disposed on the rotating shafts 303, and two second racks 305 respectively fixed on the first bracket 1. The second gears 304 mesh with the second racks 305, and the two second racks 305 are respectively located on both sides of the lifting frame 301. Figure 5 As shown, the pipe moving assembly 2 includes a floor frame 201 disposed next to the first support 1 and a support roller 202 rotatably connected to the floor frame 201. The outer side of the support roller 202 is provided with an annular groove 203 for placing the pipe. The floor frame 201 is a fixed structure or a liftable structure.

[0042] The horizontal support 601 rests on the first support 1 at both ends. The support plate 603 moves relative to the guide rail 602. At least two guide rails 602 are provided to ensure the stability and accuracy of the movement of the cutting component 7. When the third drive component 604 is working, it drives itself, the support plate 603, the cutting component 7, and other components to move together. The third drive component 604 preferably uses a gear and rack structure for driving. The first drive motor 701 drives the transmission component 703 to work. The transmission component 703 drives the reducer 702 to work, which in turn drives the cutter head 704 to work. The reducer 702 preferably uses a single-stage horizontal cycloidal pinwheel reducer. The transmission component 703 adopts a chain and sprocket structure or a belt and pulley structure, with a belt and pulley structure being preferred. The second drive motor 302 is fixed on the lifting frame 301 and drives the second gear 304 to rotate. The second gear 304 rolls on the second rack 305, thereby driving the second drive motor 302 and the lifting frame 301 to lift. Furthermore, the second drive motor 302 has two output shafts via a reduction gearbox or reducer, each with a second gear 304. The two second gears 304 mesh with the second racks 305 on both sides of the lifting frame 301, improving the lifting stability of the lifting frame 301. The support roller 202 is horizontally mounted on the floor frame 201 and rotatably connected to it. An annular groove 203 is provided on the side of the support roller 202 to restrict the pipe and prevent it from rolling left and right after being placed on the support roller 202. The annular groove 203 has a V-shaped or U-shaped cross-section. When the floor frame 201 is designed as a liftable structure, a corresponding locking structure is provided, such as a pin or screw.

[0043] Example 4 Based on Examples 1-3, Examples 1-3 are further defined as follows: like Figure 1 As shown, in this embodiment, there are two sets of lifting components 3, which are respectively set on both sides of the first bracket 1. The two sets of lifting components 3 lift and lower synchronously. The first bracket 1 is provided with a limiting bracket 101 for limiting the end of the pipe. The limiting bracket 101 is provided with a clearance treatment for the cutting component 7, so that the cutting component 7 will not cut the limiting bracket 101 when it moves.

[0044] like Figure 2-3 As shown, in this embodiment, the drive end of the second drive motor 302 is connected to a dual-output gearbox, and two rotating shafts 303 are generated through the dual-output gearbox.

[0045] like Figure 4As shown, in this embodiment, the first drive assembly 405 is driven by a handwheel, which is rotatably connected to the second bracket 401. The first gear 406 is also rotatably connected to the second bracket 401. Both the handwheel and the first gear 406 are connected to sprockets, and a chain is mounted on the sprocket. When the handwheel is turned manually, the first gear 406 is rotated through the sprocket and chain, which in turn causes the first rack 407 to move. The first fixing member 404 is a pin, and the second bracket 401 has multiple pin holes set according to the specifications of the pipes produced. When switching pipes, the first sliding bracket 402 is slid to the corresponding pin hole using the handwheel according to the pipe diameter. Then, the first fixing member 404 is inserted into the corresponding pin hole for fixing, and then the pipe cutting work begins.

[0046] like Figure 4 As shown in this embodiment, each first sliding frame 402 is provided with multiple abutment members 403, and the two first sliding frames 402 and the abutment members 403 on both sides are symmetrically arranged.

[0047] like Figure 5 As shown, in this embodiment, the floor stand 201 is a height-adjustable structure. The floor stand 201 includes a bottom support, a lifting support slidably connected to the bottom support, and a lifting component connected to the bottom support. The lifting end of the lifting component is connected to the lifting support. Telescopic cylinders are provided on both sides of the bottom support. The telescopic ends of the telescopic cylinders are fixedly connected to the lifting support. The lifting is achieved by a trapezoidal screw 5031. After being raised, the trapezoidal screw 5031 achieves self-locking. If the self-locking effect of the trapezoidal screw 5031 is not good in actual installation, an additional locking structure is provided.

[0048] The remaining working principles and processes of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0049] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A large-diameter pipe cutting machine, characterized in that, include: The first support (1), a plurality of pipe moving components (2) respectively disposed next to the first support (1), a lifting component (3) connected to the first support (1), a limiting component (4) disposed on the lifting end of the lifting component (3), a clamping component (5) disposed on the upper part of the first support (1) or on the lifting end of the lifting component (3), a transfer component (6) disposed on the top of the first support (1), and a cutting component (7) disposed on the moving end of the transfer component (6). The pipe moving component (2) is used to place the pipe and assist the pipe in moving to the limiting component (4). The limiting component (4) is used to limit the pipe. The clamping component (5) is used to clamp the pipe from both sides.

2. The large-diameter pipe cutting machine according to claim 1, characterized in that: The limiting component (4) includes a second bracket (401) disposed on the lifting end of the lifting component (3), a first sliding frame (402) slidably connected to the second bracket (401), an abutment (403) disposed on the first sliding frame (402), and a first fixing member (404) connected to the first sliding frame (402). The first sliding frame (402) is disposed on both sides of the second bracket (401). The abutment (403) is used to abut against the pipe for limiting. The first fixing member (404) is used to fix the first sliding frame (402) on the second bracket (401).

3. A large-diameter pipe cutting machine according to claim 2, characterized in that: The limiting component (4) further includes a first driving component (405) connected to the second bracket (401), a first gear (406) disposed on the driving end of the first driving component (405), and first racks (407) respectively disposed on both sides of the first gear (406). The first gear (406) meshes with the first rack (407), the first rack (407) is slidably connected to the second bracket (401), and the first rack (407) is fixedly connected to the first sliding frame (402).

4. A large-diameter pipe cutting machine according to claim 2, characterized in that: The abutment (403) is a cylindrical part and is rotatably connected to the first sliding frame (402). The abutment (403) is inclined as a whole and abuts and supports the lower side of the pipe.

5. A large-diameter pipe cutting machine according to claim 1, characterized in that: The clamping assembly (5) includes a fixed plate (501) disposed on the upper part of the first bracket (1) or the lifting end of the lifting assembly (3), a second sliding frame (502) slidably connected to the fixed plate (501), a second driving assembly (503) connected to the fixed plate (501), a telescopic member (504) disposed on the second sliding frame (502), a clamping bracket (505) disposed on the telescopic end of the telescopic member (504), a clamping block (506) vertically slidably connected to the clamping bracket (505), and a second fixing member (507) connected to the clamping block (506). The second driving assembly (503) has a locking function and is used to drive the second sliding frame (502) to move. The second fixing member (507) is used to fix the clamping block (506) on the clamping bracket (505). The clamping assembly (5) is symmetrically disposed on both sides of the first bracket (1).

6. A large-diameter pipe cutting machine according to claim 5, characterized in that: The second drive assembly (503) includes a trapezoidal lead screw (5031) rotatably connected to the fixed plate (501), a first drive member (5032) connected to the trapezoidal lead screw (5031), and a slider fitted on the trapezoidal lead screw (5031). The slider is fixedly connected to the second sliding frame (502), and the trapezoidal lead screw (5031) is axially fixed relative to the fixed plate (501).

7. A large-diameter pipe cutting machine according to claim 1, characterized in that: The transfer assembly (6) includes a transverse support (601) disposed on the top of the first support (1), at least two guide rails (602) disposed on the transverse support (601), a support plate (603) slidably connected to the guide rails (602), and a third drive assembly (604) disposed on the support plate (603). The drive end of the third drive assembly (604) is connected to the first support (1) or the transverse support (601). The third drive assembly (604) is used to drive the support plate (603) to move. The cutting assembly (7) is mounted on the support plate (603).

8. A large-diameter pipe cutting machine according to claim 1, characterized in that: The cutting assembly (7) includes a first drive motor (701) and a reducer (702) respectively disposed on the moving end of the transfer assembly (6), a transmission assembly (703) connected to the drive end of the first drive motor (701), and a cutter disc (704) disposed on the output end of the reducer (702). The output end of the transmission assembly (703) is connected to the input end of the reducer (702).

9. A large-diameter pipe cutting machine according to claim 1, characterized in that: The lifting assembly (3) includes a lifting frame (301) vertically slidably connected to the first bracket (1), a second drive motor (302) connected to the lifting frame (301), two rotating shafts (303) respectively connected to the output shaft of the second drive motor (302), a second gear (304) respectively disposed on the rotating shaft (303), and two second racks (305) respectively fixed on the first bracket (1). The second gear (304) meshes with the second rack (305), and the two second racks (305) are respectively located on both sides of the lifting frame (301).

10. A large-diameter pipe cutting machine according to claim 1, characterized in that: The pipe moving assembly (2) includes a floor frame (201) disposed next to the first support (1) and a support roller (202) rotatably connected to the floor frame (201). The outer side of the support roller (202) is provided with an annular groove (203) for placing the pipe. The floor frame (201) is a fixed structure or a liftable structure.

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