A pipe cutting device

Abstract

This invention discloses a pipe cutting device, relating to the field of pipe maintenance and repair technology. The pipe cutting device includes a mounting base; two clamping mechanisms for clamping the pipe to be cut; a moving mechanism including a mounting housing; two drive wheels installed inside the mounting housing; a transmission assembly surrounding the two drive wheels; the transmission assembly being at least partially capable of contacting the outer peripheral wall of the pipe to be cut; and a stop assembly disposed between the two drive wheels; the stop assembly includes two stop rods; the middle portions of the two stop rods are hinged to each other; the length of the stop rods is greater than the minimum distance between the two drive wheels in a second direction; the stop assembly is configured such that when the ends of the two stop rods on the same side move towards each other, they can contact the drive wheels to restrict the rotation of the drive wheels, and when they move away from each other, they can separate from the drive wheels to release the restriction on the drive wheels. This pipe cutting device facilitates axial repositioning of the cutting device while ensuring cutting accuracy.

Description

Technical Field

[0001] This invention relates to the field of pipeline maintenance and repair technology, and in particular to a pipeline cutting device. Background Technology

[0002] In the operation and maintenance of various pipeline systems such as oil and gas transportation and municipal water supply and drainage, pipelines are often affected by factors such as medium corrosion, external force damage, aging and leakage. Damaged pipe sections often need to be cut off to complete subsequent processes such as pipe section replacement, interface repair, and pressurized drilling. The efficiency and accuracy of pipeline cutting operations directly determine the operation time and construction quality of maintenance and emergency repair.

[0003] Currently, cutting devices that can be installed on the outer wall of pipes are commonly used for cutting. By moving the entire cutting device around the circumference of the pipe wall, the cutting equipment can complete a full circumferential cut. However, these cutting devices cannot move freely along the pipe axis. When it is necessary to switch the cutting position along the pipe axis or to perform continuous cutting on multiple pipe sections, the cutting device must be disassembled, manually moved to reposition, and then re-fixed. This process is cumbersome, inefficient, and significantly extends maintenance and repair time. To solve the problem of inconvenient axial repositioning, some cutting equipment has been equipped with simple rollers to facilitate the movement of the cutting device along the pipe axis. However, these devices also have some shortcomings. For example, when the cutting equipment is adjusted into position and cutting begins, the presence of rollers makes it easier for the cutting device to shake or shift, resulting in reduced cutting accuracy, uneven cuts, and in severe cases, deviated cuts or tool damage.

[0004] Therefore, there is an urgent need for a pipe cutting device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a pipe cutting device that facilitates axial repositioning of the cutting device while ensuring cutting accuracy.

[0006] To achieve this objective, the present invention adopts the following technical solution: This invention provides a cutting device, which includes a mounting base for providing an installation position; a cutting mechanism mounted on the mounting base; two clamping mechanisms rotatably mounted on opposite sides of the mounting base in a first direction; the first direction is the radial direction of the pipe to be cut; the two clamping mechanisms are capable of clamping the pipe to be cut; a moving mechanism mounted on the clamping mechanisms; the moving mechanism is capable of moving along a second direction; the second direction is the axial direction of the pipe to be cut; the moving mechanism includes: a mounting housing extending along the second direction; two drive wheels rotatably mounted inside the mounting housing and spaced apart along the second direction; and a transmission assembly surrounding the two drive wheels and connected to the two drive wheels. The drive assembly is connected by a wheel drive; a clearance notch is provided on the side of the mounting housing facing the pipe to be cut; the drive assembly can at least partially pass through the clearance notch and contact the outer peripheral wall of the pipe to be cut; a stop assembly is provided between the two drive wheels; the stop assembly includes two stop rods; the middle parts of the two stop rods are hinged to each other; the length of the stop rods is greater than the minimum distance between the two drive wheels in the second direction; the stop assembly is configured such that: when the same-side ends of the two stop rods move toward each other in a direction of approach, they can contact the drive wheel to restrict the rotation of the drive wheel; when the same-side ends of the two stop rods move toward each other in a direction of distance, they can separate from the drive wheel to release the restriction on the drive wheel.

[0007] In some embodiments, a plurality of transmission teeth are evenly spaced on the outer peripheral wall of the transmission wheel along the circumferential direction of the transmission wheel; a plurality of meshing portions are evenly spaced on the side of the transmission assembly facing the transmission wheel along the extending direction of the transmission assembly; the distance between two adjacent meshing portions is equal to the distance between two adjacent transmission teeth.

[0008] In some embodiments, the transmission assembly includes a connecting chain plate and a plurality of rollers; the connecting chain plate is wound around two of the transmission wheels; the plurality of rollers are all fixedly connected to the connecting chain plate and are evenly spaced along the extension direction of the connecting chain plate; the rollers extend along a third direction; the third direction is the tangential direction of the outer peripheral wall of the pipe to be cut; the meshing portion is formed between two adjacent rollers.

[0009] In some embodiments, the two stop levers are a first stop lever and a second stop lever; the stop assembly further includes a reset component and a control component; the reset component is disposed at the ends of the first stop lever and the second stop lever; the reset component is configured to drive the ends of the first stop lever and the second stop lever to move toward each other; the control component is disposed between the first stop lever and the second stop lever; the control component is configured to rotate to move the ends of the first stop lever and the second stop lever toward each other.

[0010] In some embodiments, the reset assembly includes a connector, two limiting members, and an elastic member; the connector passes through the first stop rod and the second stop rod; the two limiting members are respectively disposed at both ends of the connector, and at least one of the limiting members is detachably connected to the end of the connector; the elastic member is sleeved on the connector; the elastic member always has a tendency to move the ends of the first stop rod and the ends of the second stop rod toward each other.

[0011] In some embodiments, the control component includes a control rod extending along a third direction, which is the tangential direction of the outer peripheral wall of the pipe to be cut; an operating portion is provided at the end of the control rod; the operating portion is at least partially located outside the mounting housing; a pushing portion is provided on the rod body portion of the control rod; the pushing portion is located between the first stop rod and the second stop rod; the dimension of the pushing portion in the second direction is larger than the dimension of the pushing portion in the first direction.

[0012] In some embodiments, the cross-section of the pushing part is elliptical; a first receiving groove is provided on the side of the first stop rod facing the second stop rod, and a second receiving groove is provided on the side of the second stop rod facing the first stop rod; the first receiving groove and the second receiving groove can be combined to form a through hole; the pushing part passes through the through hole.

[0013] In some embodiments, the clamping mechanism includes an arc-shaped clamping arm and a tension spring; one end of the arc-shaped clamping arm is rotatably connected to the mounting base; one end of the tension spring is connected to the side of the arc-shaped clamping arm facing the pipe to be cut, and the other end is connected to the mounting base; the moving mechanism is mounted on the arc-shaped clamping arm.

[0014] In some embodiments, a first elongated adjustment hole is provided on the arc-shaped clamping arm along the extending direction of the arc-shaped clamping arm; the moving mechanism is mounted on the arc-shaped clamping arm through the first elongated adjustment hole; the position of the moving mechanism is adjustable along the extending direction of the arc-shaped clamping arm.

[0015] In some embodiments, the clamping mechanism further includes a mounting arm; the mounting arm is mounted on the first elongated adjustment hole and extends along the first direction; a second elongated adjustment hole is formed on the mounting arm along the extending direction of the mounting arm; the moving mechanism is mounted on the mounting arm through the second elongated adjustment hole; the position of the moving mechanism is adjustable in the extending direction of the mounting arm.

[0016] The beneficial effects of this invention are: This invention provides a pipe cutting device. A cutting mechanism mounted on a mounting base 1 enables pipe cutting. Two rotatable clamping mechanisms on both sides of the mounting base allow the entire pipe cutting device to be installed on the pipe to be cut. A moving mechanism on the clamping mechanisms allows the entire pipe cutting device to move axially along the pipe, facilitating changes in cutting position and improving work efficiency. Furthermore, inside the mounting housing of the moving mechanism are two drive wheels, a transmission assembly surrounding the two drive wheels, and a stop mechanism. When the ends of the two stop rods on the same side of the stop mechanism move towards each other, they contact the corresponding drive wheels, thus restricting the rotation of the drive wheels and consequently restricting the movement of the transmission assembly. This restricts the axial movement of the two pipe cutting devices, preventing shaking or displacement during cutting, ensuring cutting accuracy and a smooth cut, and reducing the risk of cut deviation and tool damage. When changing the cutting position after the cutting operation, the ends of the two stop rods on the same side can move away from each other to separate from the drive wheels, thereby releasing the restriction on the drive wheels and facilitating a smooth change of cutting position. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a pipe cutting device installed on a pipe to be cut, according to a specific embodiment of the present invention; Figure 2 This is a structural diagram of the moving mechanism and mounting arm of a pipe cutting device provided in a specific embodiment of the present invention; Figure 3 This is an exploded structural diagram of the moving mechanism of a pipe cutting device provided in a specific embodiment of the present invention; Figure 4 This is a partial structural diagram of the moving mechanism of a pipe cutting device provided in a specific embodiment of the present invention; Figure 5 yes Figure 4 An enlarged structural diagram of region A in the structure shown; Figure 6 This is another partial structural diagram of the moving mechanism of a pipe cutting device provided in a specific embodiment of the present invention; Figure 7 yes Figure 6An enlarged structural diagram of region B in the structure shown; Figure 8 yes Figure 7 An enlarged structural diagram of region C in the structure shown.

[0018] In the picture: 1. Mounting base; 2. Clamping mechanism; 21. Arc-shaped clamping arm; 211. First elongated adjustment hole; 22. Tension spring; 23. Mounting arm; 231. Second elongated adjustment hole; 3. Moving mechanism; 31. Mounting housing; 32. Transmission wheel; 321. Transmission gear; 33. Transmission assembly; 331. Roller; 3311. Short shaft; 34. Stop assembly; 341. Stop lever; 3411. Friction part; 3412. First receiving groove; 3413. Second receiving groove; 34131. Limiting groove; 342. Reset assembly; 3421. Connecting part; 3422. Limiting part; 3423. Elastic part; 343. Control lever; 3431. Operating part; 3432. Pushing part; 4. Elastic rope; X1, first direction; X2, second direction; X3, third direction. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0023] like Figure 1 As shown, this embodiment provides a pipe cutting device. The pipe cutting device includes a mounting base 1, a clamping mechanism 2, and a moving mechanism 3.

[0024] The aforementioned mounting base 1 provides an installation position. This mounting base 1 is, for example, a plate-like structure. A cutting structure (not shown in the figure) is mounted on this mounting base 1; this cutting mechanism is, for example, a plasma cutter or an oxy-acetylene flame cutter. Furthermore, it is readily understood that a cutting opening is provided on the mounting base 1 for the cutting mechanism to perform cutting operations. There are two clamping mechanisms 2, each rotatably mounted on opposite sides of the mounting base 1 in a first direction X1, where the first direction X1 is the radial direction of the pipe to be cut. The two clamping mechanisms 2 can clamp the pipe to be cut, thereby allowing the entire pipe cutting device to be mounted on the pipe.

[0025] The aforementioned moving mechanism 3 is mounted on the clamping mechanism 2. It is easy to understand that both clamping mechanisms 2 are equipped with a moving mechanism 3. This moving mechanism 3 can move along a second direction X2, where the second direction X2 is the axial direction of the pipe to be cut. Combined with... Figures 2 to 4 As shown, the moving mechanism 3 includes a mounting housing 31, a transmission wheel 32, a transmission assembly 33, and a stop assembly 34.

[0026] The mounting housing 31 extends along the second direction X2. There are two drive wheels 32, both rotatably mounted inside the mounting housing 31, and spaced apart along the second direction X2. The transmission assembly 33 is wound around the two drive wheels 32 and is drively connected to them. A clearance notch is provided on the side of the mounting housing 31 facing the pipe to be cut, allowing the transmission assembly 33 to at least partially pass through the clearance notch and contact the outer peripheral wall of the pipe.

[0027] The aforementioned stop member 34 is disposed between the two drive wheels 32. The stop member 34 includes two stop rods 341. The middle portions of the two stop rods 341 are hinged together. The length of the stop rods 341 is greater than the minimum distance between the two drive wheels 32 in the second direction X2. The stop member 34 is configured such that: when the ends of the two stop rods 341 on the same side move toward each other, they can contact the drive wheels 32 to restrict the rotation of the drive wheels 32; when the ends of the two stop rods 341 on the same side move toward each other, they can separate from the drive wheels 32 to release the restriction on the drive wheels 32.

[0028] Specifically, the two stop levers 341 are a first stop lever and a second stop lever, respectively. The first stop lever includes a first end and a second end, and the second stop lever includes a third end and a fourth end. The first end of the first stop lever and the third end of the second stop lever are respectively located on opposite sides of one of the transmission wheels 32, that is, they are located on opposite sides of one of the transmission wheels 32; the second end of the first stop lever and the fourth end of the second stop lever are respectively located on opposite sides of the other transmission wheel 32. Thus, when the first and third ends move toward each other (the second and fourth ends move toward each other synchronously under the hinge), the first and third ends contact the transmission wheel 32. Under the action of friction (or mechanical meshing force), the transmission wheel 32 is restricted from rotating, thereby restricting the rotation of the transmission assembly 33. Furthermore, when the first and third ends move away from each other (the second and fourth ends move away from each other synchronously under the hinge), the first and third ends separate from the transmission wheel 32. At this time, the transmission wheel 32 is unrestricted and can rotate freely, thereby allowing the transmission assembly 33 to rotate freely as well. It is easy to understand that a friction part 3411 or a meshing part can also be provided at the end of the stop rod 341 to increase the restriction effect on the transmission wheel 32.

[0029] Therefore, the pipe cutting device provided in this embodiment can cut pipes by means of a cutting mechanism installed on the mounting base 1. By rotatably arranging two clamping mechanisms 2 on both sides of the mounting base 1, the entire pipe cutting device can be installed on the pipe to be cut. At the same time, a moving mechanism 3 is provided on the clamping mechanism 2, so that the entire pipe cutting device can move along the axial direction of the pipe to be cut, which facilitates changing the cutting position and improves work efficiency. In addition, two transmission wheels 32, a transmission component 33 surrounding the two transmission wheels 32, and a stop member 34 are arranged inside the mounting housing 31 of the moving mechanism 3. When the ends of the two stop rods 341 in the stop member 34 move toward each other, they can contact the corresponding transmission wheel 32. This can limit the rotation of the transmission wheel 32, thereby limiting the movement of the transmission component 33. This restricts the axial movement of the two pipe cutting devices, avoids shaking or displacement of the cutting device during the cutting operation, ensures cutting accuracy and cut flatness, and reduces the risk of cutting deviation and tool damage. When the cutting position needs to be changed after the cutting operation is completed, the ends of the two stop rods 341 on the same side can be moved away from each other to separate from the transmission wheel 32, thereby releasing the restriction on the transmission wheel 32 and realizing the smooth change of the cutting position.

[0030] In some embodiments, such as Figure 3 , Figure 4 As shown, multiple transmission teeth 321 are evenly spaced along the circumferential direction of the transmission wheel 32 on its outer peripheral wall. On the side of the transmission assembly 33 facing the transmission wheel 32, multiple meshing portions are evenly spaced along the extending direction of the transmission assembly 33, with the distance between two adjacent meshing portions equal to the distance between two adjacent transmission teeth 321. This arrangement enables meshing transmission between the transmission wheel 32 and the transmission assembly 33, improving the stability of the transmission between them and preventing slippage that could cause the cutting device to move unexpectedly.

[0031] For example, combined Figure 2 , Figure 3As shown, the transmission assembly 33 includes a connecting chain plate and multiple rollers 331. The connecting chain plate is wound around two transmission wheels 32. It is readily understood that the connecting chain plate includes multiple sub-plates with their ends sequentially hinged, forming a chain-like structure. All rollers 331 are fixedly connected to the connecting chain plate (i.e., the rollers 331 cannot rotate around their own axes), and the rollers 331 are evenly spaced along the extending direction of the connecting chain plate. Exemplarily, a short shaft 3311 is provided at the end of each roller 331, and a snap-fit ​​hole is provided on the connecting chain plate. The roller 331 is connected to the connecting chain plate through the cooperation of the short shaft 3311 and the snap-fit ​​hole. The rollers 331 extend along a third direction X3, where the third direction X3 is the tangential direction of the outer peripheral wall of the pipe to be cut. The aforementioned meshing portion is formed between two adjacent rollers 331. With the above configuration, the transmission wheel 32 and the transmission assembly 33 can be meshed and driven by inserting the transmission teeth 321 on the transmission wheel 32 between two adjacent rollers 331 (i.e., inserting into the meshing part). Maintenance and repair of the transmission assembly 33 can be achieved by simply replacing the damaged rollers 331. At the same time, the rollers 331 make line contact (cylindrical rollers 331) or point contact (shuttle rollers 331) with the outer peripheral wall of the pipe to be cut, which reduces the friction between the rollers 331 and the outer peripheral wall of the pipe to be cut, facilitating the pipe circumferential cutting operation.

[0032] Furthermore, a rolling wheel is provided on the side of the roller 331 facing the pipe to be cut. The axis of the rolling wheel is parallel to the second direction X2. In other words, the rolling wheel can roll along the axial direction of the pipe to be cut. Thus, when the pipe is circumferentially cut, the rolling wheel can change the sliding friction between the roller 331 and the outer peripheral wall of the pipe to be cut into rolling friction, further reducing the friction between the roller 331 and the outer peripheral wall of the pipe to be cut, and facilitating the pipe circumferential cutting operation.

[0033] Of course, the aforementioned transmission component 33 can also be configured with other structures. For example, the transmission component 33 is a transmission belt, with multiple meshing grooves or meshing holes provided along the extension direction of the belt on the side of the transmission belt facing the transmission wheel 32. The distance between two adjacent meshing grooves and meshing holes is equal to the distance between two adjacent transmission teeth 321. With this configuration, the meshing transmission between the transmission wheel 32 and the transmission component 33 can also be achieved.

[0034] In some embodiments, combined with Figure 4 , Figure 5As shown, the two stop levers 341 are the first stop lever and the second stop lever, respectively. The stop assembly 34 also includes a reset assembly 342 and a control assembly. The reset assembly 342 is located at the ends of the first and second stop levers and is configured to drive the ends of the first and second stop levers to move closer together. The control assembly is located between the first and second stop levers and is configured to rotate to move the ends of the first and second stop levers away from each other. This configuration facilitates control of the movement of the stop levers 341.

[0035] For example, such as Figure 5As shown, the reset assembly 342 includes a connector 3421, two limiting members 3422, and an elastic member 3423. The connector 3421 passes through the first stop rod and the second stop rod, and is, for example, a connecting rod or a connecting rope. The two limiting members 3422 are respectively disposed at both ends of the connector 3421, and at least one limiting member 3422 is detachably connected to the end of the connector 3421. The elastic member 3423 is, for example, a cylindrical spring, and is sleeved on the connector 3421. The elastic member 3423 always has a tendency to move the ends of the first stop rod and the second stop rod toward each other. Specifically, the two limiting members 3422 are the first limiting member 3422 and the second limiting member 3422, respectively. The first limiting member 3422 is located on the side of the first stop rod away from the second stop rod, and the second limiting member 3422 is located on the side of the second stop rod away from the first stop rod. The elastic member 3423 is in a pre-compressed state and is disposed between the first limiting member 3422 and the first stop rod (or disposed between the second limiting member 3422 and the second stop rod). Taking the elastic element 3423 disposed between the first limiting element 3422 and the first stop rod as an example, under the elastic force of the elastic element 3423, the two ends of the elastic element 3423 respectively push against the first stop rod and the first limiting element 3422. First, the first stop rod will move towards the second stop rod under the pushing action of the elastic element 3423. Second, the first limiting element 3422 will move away from the first stop rod under the pushing action of the elastic element 3423. Since the first limiting element 3422 and the second limiting element 3422 are located on both sides of the first stop rod, they will move synchronously under the connecting action of the connecting element 3421, and their movement directions are opposite to those of the first stop rod (i.e., one moves away from the other and the other moves closer). Therefore, under the connecting action of the connecting element 3421, the first limiting element 3422 will drive the second limiting element 3422 to move towards the first stop rod, thereby pushing the second stop rod to move towards the first stop rod. In this way, the ends of the first stop lever and the second stop lever can be moved closer to each other by the reset component 342. The structure is simple and easy to set up.

[0036] In some embodiments, combined with Figure 6 , Figure 7As shown, the control assembly includes a control lever 343. The control lever 343 extends along a third direction X3, where X3 is the tangential direction of the outer peripheral wall of the pipe to be cut. An operating part 3431 is provided at the end of the control lever 343, and this operating part 3431 is at least partially located outside the mounting housing 31. A pushing part 3432 is provided on the lever body portion of the control lever 343, located between the first stop lever and the second stop lever. The dimension of the pushing part 3432 in the second direction X2 is larger than the dimension of the pushing part 3432 in the first direction X1. It is easy to understand that since the dimensions of the pushing part 3432 in the second direction X2 are different from those in the first direction X1, when the operating part 3431 of the control lever 343 drives the pushing part 3432 to rotate, the posture of the pushing part 3432 changes, which gradually pushes against the first stop lever and the second stop lever, or in other words, gradually spreads the first stop lever and the second stop lever apart, increasing the distance between them, thereby causing the ends of the first stop lever and the ends of the second stop lever to move away from each other. Further rotation of the pushing part 3432, under the action of the aforementioned reset assembly 342, can gradually reduce the distance between the first stop lever and the second stop lever.

[0037] For example, combined Figure 7 , Figure 8 As shown, the cross-section of the pushing portion 3432 of the control lever 343 is elliptical. A first receiving groove 3412 is provided on the side of the first stop lever facing the second stop lever, and a second receiving groove 3413 is provided on the side of the second stop lever facing the first stop lever. The first receiving groove 3412 and the second receiving groove 3413 can be combined to form a through hole, through which the pushing portion 3432 of the control lever 343 passes. It is easy to understand that the through hole and the pushing portion 3432 of the control lever 343 are adapted to each other, that is, the shape and size of the cross-sectional shape of the through hole are adapted to the shape and size of the cross-sectional shape of the pushing portion 3432. With this arrangement, the pushing portion 3432 of the control lever 343 can easily rotate between the first stop lever and the second stop lever.

[0038] Furthermore, such as Figure 8 As shown, a limiting groove 34131 is also provided at the bottom of the first receiving groove 3412 and / or the second receiving groove 3413. When the pushing part 3432 rotates and pushes against the first stop rod and the second stop rod, so that the distance between the first stop rod and the second stop rod is at its maximum, the pushing part 3432 can be engaged in the limiting groove 34131. With this arrangement, it is possible to prevent the pushing part 3432 from rotating further during the movement of the pipe cutting device, which would cause the first stop rod and the second stop rod to reset (i.e., the distance between them to decrease), thus improving the reliability of the pipe cutting device during use.

[0039] In some embodiments, such as Figure 1 As shown, the clamping mechanism 2 includes an arc-shaped clamping arm 21 and a tension spring 22. One end of the arc-shaped clamping arm 21 is rotatably connected to the mounting base 1, and one end of the tension spring 22 is connected to the side of the arc-shaped clamping arm 21 facing the pipe to be cut, while the other end is connected to the mounting base 1. The moving mechanism 3 is mounted on the arc-shaped clamping arm 21. Exemplarily, there are two arc-shaped clamping arms 21 (and it is easy to understand that there are also two tension springs 22), spaced apart along the second direction X2, with the moving mechanism 3 mounted between the two arc-shaped clamping arms 21 (for example, the two ends of the mounting housing 31 of the moving mechanism 3 are respectively mounted to the two arc-shaped clamping arms 21 by bolts or other connecting parts 3421). There can also be multiple moving mechanisms 3, spaced apart along the extension direction of the arc-shaped clamping arms 21. With the above settings, the tension spring 22 can provide power to the arc-shaped clamping arm 21, enabling the arc-shaped clamping arm 21 to move toward the pipe to be cut, thereby clamping the pipe to be cut.

[0040] In some embodiments, such as Figure 1 As shown, a first elongated adjustment hole 211 is provided on the arc-shaped clamping arm 21 of the clamping mechanism 2 along the extending direction of the arc-shaped clamping arm 21. The aforementioned moving mechanism 3 is installed on the arc-shaped clamping arm 21 through the first elongated adjustment hole 211, and the position of the moving mechanism 3 is adjustable along the extending direction of the arc-shaped clamping arm 21. For example, the moving mechanism 3 is connected to the arc-shaped clamping arm 21 by an adjusting bolt passing through the first elongated adjustment hole 211. When it is necessary to adjust the position of the moving mechanism 3, the adjusting bolt can be loosened, and then it can be moved along the extending direction of the first elongated adjustment hole 211. After moving to a suitable position, the adjusting bolt is tightened to fix the position of the moving mechanism 3. Through the above settings, the position of the moving mechanism 3 in the circumferential direction of the pipe to be cut can be flexibly adjusted, making the pipe cutting device applicable to different types of pipes to be cut, thus improving the applicability of the pipe cutting device.

[0041] Furthermore, in some embodiments, such as Figure 1As shown, the clamping mechanism 2 also includes a mounting arm 23. The mounting arm 23 is mounted in the first elongated adjustment hole 211 and extends along the first direction X1. A second elongated adjustment hole 231 is formed on the mounting arm 23 along its extension direction. The moving mechanism 3 is mounted on the mounting arm 23 through the second elongated adjustment hole 231, and its position is adjustable along the extension direction of the mounting arm 23. For example, the moving mechanism 3 is connected to the mounting arm 23 by an adjusting bolt passing through the second elongated adjustment hole 231, and the mounting arm 23 is connected to the arc-shaped clamping arm 21 by another adjusting bolt passing through the first elongated adjustment hole 211. When the position of the moving mechanism 3 needs to be adjusted, the two adjusting bolts can be loosened, and then the positions of the mounting arm 23 and the moving mechanism 3 can be moved respectively. After moving to the appropriate position, the two adjusting bolts are tightened to fix the positions of the mounting arm 23 and the moving mechanism 3. With the above configuration, the position of the moving mechanism 3 in the circumferential direction of the pipe to be cut, as well as the distance between the moving mechanism 3 and the outer peripheral wall of the pipe to be cut, can be adjusted simultaneously. This allows the pipe cutting device to be applied to different types of pipes to be cut, further improving its applicability. Furthermore, an elastic rope 4 can be added to the pipe cutting device. The elastic rope 4 is simultaneously threaded through multiple moving mechanisms 3, ensuring that all moving mechanisms 3 are in contact with the outer peripheral wall of the pipe to be cut during the position adjustment process.

[0042] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. 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 the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pipe cutting device, characterized in that, include: Mounting base (1) is used to provide an installation position; a cutting mechanism is mounted on the mounting base (1); Two clamping mechanisms (2) are rotatably mounted on opposite sides of the mounting base (1) in a first direction (X1); the first direction (X1) is the radial direction of the pipe to be cut; the two clamping mechanisms (2) are capable of clamping the pipe to be cut; A moving mechanism (3) is mounted on the clamping mechanism (2); the moving mechanism (3) is capable of moving along a second direction (X2); the second direction (X2) is the axial direction of the pipe to be cut; the moving mechanism (3) includes: Mounting housing (31) extends along the second direction (X2); Two drive wheels (32) are rotatably mounted inside the mounting housing (31) and spaced apart along the second direction (X2); A transmission assembly (33) is wound around the two transmission wheels (32) and is connected to the two transmission wheels (32) in a transmission manner; an avoidance notch is provided on the side of the mounting housing (31) facing the pipe to be cut; the transmission assembly (33) can at least partially pass through the avoidance notch and contact the outer peripheral wall of the pipe to be cut; A stop assembly (34) is disposed between the two drive wheels (32); the stop assembly (34) includes two stop rods (341); the middle parts of the two stop rods (341) are hinged to each other; the length of the stop rods (341) is greater than the minimum distance between the two drive wheels (32) in the second direction (X2); The stop member (34) is configured such that when the ends of the two stop rods (341) on the same side move toward each other, they can contact the drive wheel (32) to restrict the rotation of the drive wheel (32); when the ends of the two stop rods (341) on the same side move toward each other, they can separate from the drive wheel (32) to release the restriction on the drive wheel (32).

2. The pipe cutting device according to claim 1, characterized in that, On the outer peripheral wall of the transmission wheel (32), a plurality of transmission teeth (321) are evenly spaced along the circumferential direction of the transmission wheel (32); on the side of the transmission assembly (33) facing the transmission wheel (32), a plurality of meshing parts are evenly spaced along the extension direction of the transmission assembly (33); the distance between two adjacent meshing parts is equal to the distance between two adjacent transmission teeth (321).

3. The pipe cutting device according to claim 2, characterized in that, The transmission assembly (33) includes a connecting chain plate and a plurality of rollers (331); the connecting chain plate is wound around two of the transmission wheels (32); the plurality of rollers (331) are all fixedly connected to the connecting chain plate and are evenly spaced along the extension direction of the connecting chain plate; the rollers (331) extend along a third direction (X3); the third direction (X3) is the tangential direction of the outer peripheral wall of the pipe to be cut; the meshing part is formed between two adjacent rollers (331).

4. The pipe cutting device according to claim 1, characterized in that, The two stop levers (341) are a first stop lever and a second stop lever, respectively; the stop assembly (34) also includes a reset assembly (342) and a control assembly; The reset assembly (342) is disposed at the end of the first stop rod and the end of the second stop rod; the reset assembly (342) is configured to drive the end of the first stop rod and the end of the second stop rod to move toward each other. The control component is disposed between the first stop lever and the second stop lever; the control component is configured such that rotating the control component causes the ends of the first stop lever and the second stop lever to move in a direction away from each other.

5. The pipe cutting device according to claim 4, characterized in that, The reset assembly (342) includes a connector (3421), two limiting members (3422), and an elastic member (3423); the connector (3421) passes through the first stop rod and the second stop rod; the two limiting members (3422) are respectively disposed at both ends of the connector (3421), and at least one of the limiting members (3422) is detachably connected to the end of the connector (3421); the elastic member (3423) is sleeved on the connector (3421); the elastic member (3423) always has a tendency to move the ends of the first stop rod and the second stop rod toward each other.

6. The pipe cutting device according to claim 4, characterized in that, The control assembly includes a control rod (343); the control rod (343) extends along a third direction (X3); the third direction (X3) is the tangential direction of the outer peripheral wall of the pipe to be cut; an operating part (3431) is provided at the end of the control rod (343); the operating part (3431) is at least partially located outside the mounting housing (31); a pushing part (3432) is provided on the rod body portion of the control rod (343); the pushing part (3432) is located between the first stop rod and the second stop rod; the dimension of the pushing part (3432) in the second direction (X2) is greater than the dimension of the pushing part (3432) in the first direction (X1).

7. The pipe cutting device according to claim 6, characterized in that, The cross-section of the pushing part (3432) is elliptical; a first receiving groove is provided on the side of the first stop rod facing the second stop rod, and a second receiving groove is provided on the side of the second stop rod facing the first stop rod; the first receiving groove and the second receiving groove can be combined to form a through hole; the pushing part (3432) passes through the through hole.

8. The pipe cutting device according to any one of claims 1 to 7, characterized in that, The clamping mechanism (2) includes an arc-shaped clamping arm (21) and a tension spring (22); one end of the arc-shaped clamping arm (21) is rotatably connected to the mounting base (1); one end of the tension spring (22) is connected to the side of the arc-shaped clamping arm (21) facing the pipe to be cut, and the other end is connected to the mounting base (1); the moving mechanism (3) is mounted on the arc-shaped clamping arm (21).

9. The pipe cutting device according to claim 8, characterized in that, A first elongated adjustment hole (211) is provided on the arc-shaped clamping arm (21) along the extension direction of the arc-shaped clamping arm (21); the moving mechanism (3) is installed on the arc-shaped clamping arm (21) through the first elongated adjustment hole (211); the position of the moving mechanism (3) is adjustable in the extension direction of the arc-shaped clamping arm (21).

10. The pipe cutting device according to claim 9, characterized in that, The clamping mechanism (2) further includes a mounting arm (23); the mounting arm (23) is mounted on the first elongated adjustment hole (211) and extends along the first direction (X1); a second elongated adjustment hole (231) is opened on the mounting arm (23) along the extension direction of the mounting arm (23); the moving mechanism (3) is mounted on the mounting arm (23) through the second elongated adjustment hole (231); the position of the moving mechanism (3) is adjustable in the extension direction of the mounting arm (23).

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