Small-space pipeline cutting device

Abstract

The utility model provides a small-space pipeline cutting device, which belongs to the technical field of hollow pipe cutting equipment and comprises a half-surrounded support body, a plurality of cutting components arranged on the half-surrounded support body and an operating handle connected with the half-surrounded support body. The semi-surrounding support body is in an incomplete circular ring shape with an open end, each cutting assembly comprises a cutting knife, and the multiple cutting assemblies are arranged in the circumferential direction of the semi-surrounding support body; the small-space pipeline cutting device is arranged around the outer side of the pipeline, the cutting knives can be tightly attached to the outer wall of the pipeline and rotate by a small angle, the sum of the rotation angles of the multiple cutting knives is larger than 360 degrees, and then cutting of the pipeline can be completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of hollow pipe cutting equipment, and more specifically relates to a small space pipeline cutting device. Background Art

[0002] Pipe cutting is a process of cutting pipes into required lengths or shapes using various tools or equipment such as cutting machines, electric saws, gas cutting machines, etc. This operation is usually carried out in industries such as construction, manufacturing, and installation to meet the needs of various projects or projects.

[0003] Manual cutting usually uses a manual cutting tool, such as a saw or cutter, which requires manual operation by the operator.

[0004] A pipe cutter is a blade-like tool that can be used to cut hoses or plastic pipes. The operator places the cutter on the pipe and then pushes the cutter hard to cut the pipe.

[0005] Pipe cutters are usually made of carbide or other high hardness materials to ensure that they can effectively cut pipes. The shape and size of the cutter can be adjusted as needed to accommodate pipes of different diameters and materials.

[0006] Existing pipe cutting knives cannot be applied to pipes that have been installed in a small space. There is not enough space in the small space to place the pipe cutting tool, so the pipe cutting cannot be completed.

[0007] There is also a small cutting device in the existing pipe cutting tools, which is provided with a cutting blade, and the cutting blade is clamped on the pipe and rotates around the pipe to cut the pipe. However, one side of some pipes is close to the wall, and the cutting device is blocked by the wall, so the pipe cutting cannot be completed. Utility Model Content

[0008] One object of the utility model is to provide a small space pipeline cutting device, comprising a semi-enclosed bracket body, a plurality of cutting components arranged on the semi-enclosed bracket body, and an operating handle connected to the semi-enclosed bracket body; the semi-enclosed bracket body is in an incomplete circular ring shape with an open end, the cutting component comprises a cutting knife, and the plurality of cutting components are arranged along the circumferential direction of the semi-enclosed bracket body;

[0009] The operating handle is used to extend the working distance. The open end of the semi-enclosed bracket body can be connected to the pipe to be cut from the side, so that the cutting knives of multiple cutting components can contact the outer surface of the pipe to be cut at the same time. The semi-enclosed bracket body can be rotated to cut the pipe.

[0010] Preferably, the cutting assembly also includes a connecting frame, the length direction of the connecting frame is arranged along the radial direction of the semi-enclosed bracket body, and the semi-enclosed bracket body is provided with a movable groove for the connecting frame to pass through. The movable groove penetrates the semi-enclosed bracket body, and the connecting frame can reciprocate radially along the semi-enclosed bracket body in the movable groove.

[0011] Preferably, the cutting knife is arranged at the end of the connecting frame close to the axis direction of the semi-enclosed bracket body;

[0012] A rotating shaft is arranged on the connecting frame, the cutting knife is in a circular shape, a through hole matching the rotating shaft is arranged on the inner side, and a blade is arranged on the outer side; the cutting knife is sleeved on the rotating shaft, and the cutting knife can rotate freely around the rotating shaft.

[0013] Preferably, an elastic unit is provided between the connecting frame and the semi-enclosed bracket body, and the elastic unit is used to push the cutting knife to move in a direction close to the axis of the semi-enclosed bracket body;

[0014] A limiting step is arranged in the movable groove, and the limiting step is used to limit the closest position of the connecting frame to the axis of the semi-enclosed bracket body.

[0015] Preferably, a rotating wheel is provided at the end of the connecting frame away from the axis of the semi-enclosed bracket body, and a connecting cable is provided between the rotating wheels of the connecting frames of multiple cutting components; the connecting cable can be tightened, and the tightened connecting cable can simultaneously push the connecting frames of multiple cutting components to move in a direction close to the axis of the semi-enclosed bracket body.

[0016] Preferably, a limiting step is provided in the movable groove, and the limiting step is used to limit the closest position of the connecting frame to the axis of the semi-enclosed bracket body; the connecting cable is elastic;

[0017] When the open end of the semi-enclosed bracket body is connected to the pipe to be cut, the connecting cable is extended and the cutting knife is retracted; when the cutting knives of multiple cutting assemblies all contact the pipe to be cut, the cutting knives are extended and the connecting cables push the cutting knives to fit tightly against the pipe to be cut.

[0018] Preferably, a tightening assembly is provided at the connection portion between the semi-enclosed bracket body and the operating handle, and the tightening assembly is used to tighten the connection cable;

[0019] The connecting cables are arranged in a ring shape with the ends connected, the tensioning assembly includes a tightening wheel, and the connecting cables pass through the rotating wheels and tightening wheels of the multiple cutting assemblies;

[0020] When the open end of the semi-enclosed bracket body is connected to the pipe to be cut, the elastic component is adjusted to loosen the connecting cable, and the cutting knives of multiple cutting components can be clamped on the outside of the pipe to be cut; the elastic component is adjusted to tighten the connecting cable to push the cutting knife to fit tightly against the pipe to be cut.

[0021] Preferably, the tensioning assembly further comprises an externally threaded rod connected to the tightening wheel, and an internally threaded hole matching the externally threaded rod is provided in the operating handle; and a limiting groove is provided at the connection portion between the operating handle and the semi-enclosed bracket body.

[0022] Preferably, a connecting portion between the connecting frame and the semi-enclosed bracket body is provided with an elastic sheet, and the elastic sheet is used to push the connecting frame to move in a direction away from the axis of the semi-enclosed bracket body.

[0023] Preferably, an idler wheel is also provided on the semi-enclosed bracket body, and the connecting cable passes through the rotating wheels, tightening wheels and idler wheels of multiple cutting components.

[0024] As described above, a small space pipe cutting device of the utility model is provided with multiple cutting knives, which are respectively arranged around the outside of the pipe. The cutting knives can be close to the outer wall of the pipe and rotated at a small angle so that the sum of the rotation angles of the multiple cutting knives is greater than 360 degrees, thereby completing the cutting of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be more fully understood through the following detailed description in conjunction with the accompanying drawings, in which like elements are numbered in a similar manner, wherein:

[0026] Figure 1 This is a schematic diagram of a small space pipe cutting device in use according to an embodiment of the utility model;

[0027] Figure 2 It is a structural schematic diagram of a tensioning assembly of a small space pipe cutting device according to an embodiment of the utility model;

[0028] Figure 3 It is a cross-sectional view of a semi-enclosed support body of a small space pipe cutting device according to an embodiment of the utility model;

[0029] Figure 4 It is a cross-sectional view of a semi-enclosed support body and an operating handle of a small space pipe cutting device according to an embodiment of the utility model;

[0030] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0031] In the figure: the pipe to be cut 1, the cutting knife 2, the connecting frame 21, the rotating shaft 22, the rotating wheel 23, the semi-enclosed bracket body 3, the movable groove 31, the operating handle 4, the connecting cable 5, the tightening wheel 6, the external threaded rod 7, the limiting groove 8, the spring piece 91, and the idler wheel 92. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is further described in detail below through embodiments and in combination with the accompanying drawings, but the utility model is not limited to the following embodiments.

[0033] The pipe cutting knife 2 is a tool similar to a blade, which can be used to cut a hose or a plastic pipe. The operator can put the cutting knife 2 on the pipe and then push the cutting knife 2 hard to cut the pipe.

[0034] The pipe cutting blade 2 is usually made of hard alloy or other high hardness materials to ensure that it can effectively cut the pipe. The shape and size of the cutting blade 2 can be adjusted as needed to adapt to pipes of different diameters and materials.

[0035] The existing pipe cutting knife 2 cannot be applied to pipes that have been installed in a small space. There is not enough space in the small space to place the pipe cutting tool, so the pipe cutting cannot be completed. There is also a small cutting device, which is provided with a cutting knife 2, so that the cutting knife 2 clamps the pipe and rotates around the pipe to cut the pipe. However, one side of some pipes is close to the wall, and the cutting device is blocked by the wall, so the pipe cutting cannot be completed.

[0036] In order to solve the above problems, the present embodiment provides a small space pipe cutting device, comprising a semi-enclosed bracket body 3, a plurality of cutting components arranged on the semi-enclosed bracket body 3, and an operating handle 4 connected to the semi-enclosed bracket body 3; the semi-enclosed bracket body 3 is in an incomplete circular ring shape with an open end, the cutting component comprises a cutting knife 2, and the plurality of cutting components are arranged along the circumferential direction of the semi-enclosed bracket body 3;

[0037] The operating handle 4 is used to extend the working distance. The open end of the semi-enclosed bracket body 3 can be connected to the pipe 1 to be cut from the side, so that the cutting knives 2 of multiple cutting assemblies can contact the outer surface of the pipe 1 to be cut at the same time. Rotating the semi-enclosed bracket body 3 can cut the pipe.

[0038] In this embodiment, Figure 1 As shown, the open end of the semi-enclosed bracket body 3 is not less than the diameter of the pipe 1 to be cut, and the semi-enclosed bracket body 3 needs to be inserted from the side of the pipe 1 to be cut. At least three cutting assemblies are provided, two of which are provided on both sides of the open end of the semi-enclosed bracket body 3 to clamp the pipe 1 to be cut. The inner surface of the semi-enclosed bracket body 3 is arc-shaped, and the arc-shaped surface has an axis. During the pipe cutting process, the axis of the semi-enclosed bracket body 3 is collinear with the pipe.

[0039] During the specific implementation process, the cutting knife 2 can move radially along the semi-enclosed bracket body 3. The cutting knife 2 moves outward so that the semi-enclosed bracket body 3 can be inserted into the outside of the pipe 1 to be cut. After being inserted into place, the cutting knife 2 moves inward until it contacts the pipe 1 to be cut.

[0040] When cutting a pipe, the semi-enclosed bracket body 3 of this embodiment is provided with three cutting components, and the cutting can be completed by rotating the semi-enclosed bracket body 3 at least 120 degrees by operating the handle 4, even if the pipe is against a wall. If the semi-enclosed bracket body 3 is provided with four cutting components, the cutting can be completed by rotating the semi-enclosed bracket body 390 degrees by operating the handle 4.

[0041] Furthermore, the cutting assembly also includes a connecting frame 21, the length direction of which is arranged along the radial direction of the semi-enclosed bracket body 3, and a movable groove 31 for the connecting frame 21 to pass through is arranged on the semi-enclosed bracket body 3, and the movable groove 31 penetrates the semi-enclosed bracket body 3, and the connecting frame 21 can reciprocate in the movable groove 31 along the radial direction of the semi-enclosed bracket body 3.

[0042] In this embodiment, Figure 2 , Figure 3 As shown, the cutting knife 2 is installed on the connecting frame 21 , and a movable groove 31 for the connecting frame 21 to move is provided on the semi-enclosed bracket body 3 . The connecting frame 21 can reciprocate in the movable groove 31 along the radial direction of the semi-enclosed bracket body 3 .

[0043] The cutting knife 2 can move radially along the semi-enclosed bracket body 3 in the movable groove 31. The cutting knife 2 moves outward, and the semi-enclosed bracket body 3 can be inserted to the outside of the pipe 1 to be cut. After being inserted into place, the cutting knife 2 moves inward until it contacts the pipe 1 to be cut.

[0044] Furthermore, the cutting knife 2 is arranged at the end of the connecting frame 21 close to the axial direction of the semi-enclosed bracket body 3;

[0045] A rotating shaft 22 is arranged on the connecting frame 21 . The cutting knife 2 is in a circular shape with a through hole matching the rotating shaft 22 on the inner side and a blade arranged on the outer side. The cutting knife 2 is sleeved on the rotating shaft 22 and can rotate freely around the rotating shaft 22 .

[0046] In this embodiment, Figure 5 As shown, the cutting knife 2 is in the shape of a circular ring, with the blade on the outside. The cutting knife 2 is sleeved on the rotating shaft 22 and can rotate freely.

[0047] Furthermore, an elastic unit is provided between the connecting frame 21 and the semi-enclosed bracket body 3, and the elastic unit is used to push the cutting knife 2 to move toward the direction close to the axis of the semi-enclosed bracket body 3;

[0048] A limiting step is arranged in the movable groove 31 , and the limiting step is used to limit the closest position of the connecting frame 21 to the axis of the semi-enclosed bracket body 3 .

[0049] The elastic unit of this embodiment pushes the cutting knife 2 to approach the pipe 1 to be cut, and when the semi-enclosed bracket body 3 is inserted into the pipe, the elastic unit is compressed, and after being inserted into place, the elastic unit pushes the cutting knife 2 to contact the pipe 1 to be cut. The limiting step is used to prevent the elastic unit from pushing the connecting frame 21 out of the movable groove 31 when the cutting knife 2 does not contact the pipe.

[0050] The elastic unit may be a spring, a spring sheet 91 or other components with elastic deformation capability.

[0051] Furthermore, a rotating wheel 23 is provided at the end of the connecting frame 21 away from the axis of the semi-enclosed bracket body 3, and a connecting cable 5 is provided between the rotating wheels 23 of the connecting frames 21 of the multiple cutting components; the connecting cable 5 can be tightened, and the tightened connecting cable 5 can simultaneously push the connecting frames 21 of the multiple cutting components to move in a direction close to the axis of the semi-enclosed bracket body 3.

[0052] In this embodiment, the rotating wheel 23 is used to connect the cable 5. When the cable is pulled, the rotating wheel 23 rotates accordingly to reduce friction. Tightening the connecting cable 5 can simultaneously pull all the connecting frames 21 to move closer to the pipe 1 to be cut.

[0053] In the specific implementation process, it is necessary to first loosen the connecting cable 5 so that the cutting knife 2 is opened enough to be inserted into the pipe 1 to be cut, and then tighten the connecting cable 5 to cut the pipe.

[0054] Furthermore, a limiting step is provided in the movable groove 31, and the limiting step is used to limit the closest position of the connecting frame 21 to the axis of the semi-enclosed bracket body 3; the connecting cable 5 is elastic;

[0055] When the open end of the semi-enclosed bracket body 3 is connected to the pipe 1 to be cut, the connecting cable 5 is extended and the cutting knife 2 is retracted; when the cutting knives 2 of multiple cutting assemblies all contact the pipe 1 to be cut, the cutting knife 2 is extended and the connecting cable 5 pushes the cutting knife 2 to fit tightly against the pipe 1 to be cut.

[0056] In this embodiment, a configuration method of the connecting cable 5 is proposed. The connecting cable 5 itself is elastic, and the deformation ability of the connecting cable 5 is used to pull the cutting knife 2 to press the pipe 1 to be cut.

[0057] Furthermore, a tightening assembly is provided at the connection portion between the semi-enclosed bracket body 3 and the operating handle 4, and the tightening assembly is used to tighten the connecting cable 5;

[0058] The connecting cable 5 is arranged in a ring shape with the ends connected, and the tensioning assembly includes a tightening wheel 6. The connecting cable 5 passes through the rotating wheels 23 of the plurality of cutting assemblies and the tightening wheel 6;

[0059] When the open end of the semi-enclosed bracket body 3 is connected to the pipe 1 to be cut, the tension component is adjusted to loosen the connecting cable 5, and the cutting knives 2 of multiple cutting components can be clamped on the outside of the pipe 1 to be cut; the tension component is adjusted to tighten the connecting cable 5, and the cutting knife 2 is pushed to fit closely to the pipe 1 to be cut.

[0060] In this embodiment, another arrangement of the connection cable 5 is proposed. The connection cable 5 is not elastic, and the tension component is used to adjust the tightness of the connection cable 5 .

[0061] The tightening wheel 6 can move in a direction away from the semi-enclosed bracket body 3 to pull the connecting cable 5 closer, and can loosen the connecting cable 5 by moving in a direction close to the semi-enclosed bracket body 3 .

[0062] Furthermore, the tensioning assembly also includes an external threaded rod 7 connected to the tightening wheel 6, and an internal threaded hole matching the external threaded rod 7 is provided in the operating handle 4; a limiting groove 8 is provided at the connection between the operating handle 4 and the semi-enclosed bracket body 3.

[0063] This embodiment provides a method for adjusting the tightness of the connecting cable 5. Rotating the operating handle 4 can pull the tightening wheel 6 to move away from the semi-enclosed bracket body 3, and reverse rotation can pull the tightening wheel 6 to move toward the semi-enclosed bracket body 3, thereby achieving the adjustment of the tightness of the connecting cable 5.

[0064] The limiting groove 8 is provided on the operating handle 4 , and the connection portion between the operating handle 4 and the semi-enclosed bracket body 3 is provided with a corresponding protrusion for limiting the operating handle 4 to be only able to rotate but not move relative to the semi-enclosed bracket body 3 .

[0065] Furthermore, a spring piece 91 is provided at the connection portion between the connecting frame 21 and the semi-enclosed bracket body 3 , and the spring piece 91 is used to push the connecting frame 21 to move in a direction away from the axis of the semi-enclosed bracket body 3 .

[0066] In this embodiment, Figure 3 , Figure 4 as well as Figure 5 As shown, the spring piece 91 is used to push the connecting frame 21 to move away from the axis of the semi-enclosed bracket body 3 when the connecting cable 5 is in a relaxed state, so as to prevent the cutting knife 2 from blocking the semi-enclosed bracket body 3 from being inserted into the pipe 1 to be cut.

[0067] Furthermore, an idler wheel 92 is also provided on the semi-enclosed bracket body 3, and the connecting cable 5 passes through the rotating wheel 23, the tightening wheel 6 and the idler wheel 92 of multiple cutting components.

[0068] In this embodiment, the idler wheel 92 is used to optimize the winding path of the connecting cable 5 to prevent the connecting cable 5 from generating friction with the semi-enclosed bracket body 3 .

[0069] The various embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and the scope of the present utility model is not limited to the above embodiments. Without departing from the spirit and scope of the present utility model, many modifications and changes are obvious to those of ordinary skill in the art. In other words, those of ordinary skill in the art can make various changes and improvements to the present utility model in form and detail, and these are considered to fall within the scope of protection of the present utility model. The choice of terms used in this article is intended to best explain the principles of the various embodiments, practical applications, or improvements to the technology in the market, or to enable those of ordinary skill in the art to understand the various embodiments disclosed herein.

Claims

1. A small space pipe cutting device, used for cutting pipes in a narrow space, characterized by: It comprises a semi-enclosed support body (3), a plurality of cutting assemblies arranged on the semi-enclosed support body (3), and an operating handle (4) connected to the semi-enclosed support body (3); the semi-enclosed support body (3) is in the shape of an incomplete circular ring with an open end, the cutting assembly comprises a cutting knife (2), and the plurality of cutting assemblies are arranged along the circumferential direction of the semi-enclosed support body (3); The operating handle (4) is used to extend the working distance. The open end of the semi-enclosed bracket body (3) can be connected to the pipe (1) to be cut from the side, so that the cutting knives (2) of the multiple cutting assemblies can contact the outer surface of the pipe (1) to be cut at the same time. The semi-enclosed bracket body (3) can be rotated to cut the pipe.

2. A small space pipe cutting device according to claim 1, characterized in that: The cutting assembly further comprises a connecting frame (21), the length direction of the connecting frame (21) being arranged along the radial direction of the semi-enclosed bracket body (3), the semi-enclosed bracket body (3) being provided with a movable groove (31) for the connecting frame (21) to pass through, the movable groove (31) penetrating the semi-enclosed bracket body (3), and the connecting frame (21) being able to reciprocate in the movable groove (31) along the radial direction of the semi-enclosed bracket body (3).

3. A small space pipe cutting device according to claim 2, characterized in that: The cutting knife (2) is arranged at an end of the connecting frame (21) close to the axial direction of the semi-enclosed bracket body (3); A rotating shaft (22) is arranged on the connecting frame (21); the cutting knife (2) is in the shape of a ring, has a through hole on the inner side matching the rotating shaft (22), and a blade is arranged on the outer side; the cutting knife (2) is sleeved on the rotating shaft (22), and the cutting knife (2) can rotate freely around the rotating shaft (22).

4. A small space pipe cutting device according to claim 2 or 3, characterized in that: An elastic unit is provided between the connecting frame (21) and the semi-enclosed bracket body (3), and the elastic unit is used to push the cutting knife (2) to move in a direction close to the axis of the semi-enclosed bracket body (3); A limiting step is provided in the movable groove (31), and the limiting step is used to limit the closest position of the connecting frame (21) to the axis of the semi-enclosed bracket body (3).

5. A small space pipe cutting device according to claim 2 or 3, characterized in that: A rotating wheel (23) is provided at the end of the connecting frame (21) away from the axis of the semi-enclosed bracket body (3), and a connecting cable (5) is provided between the rotating wheels (23) of the connecting frames (21) of the plurality of cutting assemblies; the connecting cable (5) can be tightened, and the tightened connecting cable (5) can simultaneously push the connecting frames (21) of the plurality of cutting assemblies to move in a direction close to the axis of the semi-enclosed bracket body (3).

6. A small space pipe cutting device according to claim 5, characterized in that: A limiting step is provided in the movable groove (31), and the limiting step is used to limit the closest position of the connecting frame (21) to the axis of the semi-enclosed bracket body (3); the connecting cable (5) is elastic; When the open end of the semi-enclosed support body (3) is connected to the pipe to be cut (1), the connecting cable (5) is extended and the cutting knife (2) is retracted; when the cutting knives (2) of the multiple cutting assemblies are all in contact with the pipe to be cut (1), the cutting knives (2) are extended and the connecting cable (5) pushes the cutting knives (2) to fit tightly against the pipe to be cut (1).

7. The small space pipe cutting device according to claim 5, characterized in that: The connection portion between the semi-enclosed bracket body (3) and the operating handle (4) is provided with a tightening component, and the tightening component is used to tighten the connecting cable (5); The connecting cable (5) is arranged in a ring shape with the ends connected, the tensioning assembly comprises a tensioning wheel (6), and the connecting cable (5) passes through the rotating wheels (23) and the tensioning wheel (6) of the plurality of cutting assemblies; When the open end of the semi-enclosed bracket body (3) is connected to the pipe (1) to be cut, the elastic component is adjusted to loosen the connecting cable (5), and the cutting knives (2) of the plurality of cutting components can be clamped on the outside of the pipe (1) to be cut; the elastic component is adjusted to tighten the connecting cable (5), and the cutting knives (2) are pushed to fit tightly against the pipe (1) to be cut.

8. The small space pipe cutting device according to claim 7, characterized in that: The tensioning assembly further comprises an externally threaded rod (7) connected to the tightening wheel (6); an internally threaded hole matching the externally threaded rod (7) is provided in the operating handle (4); and a limiting groove (8) is provided at the connection portion between the operating handle (4) and the semi-enclosed bracket body (3).

9. The small space pipe cutting device according to claim 8, characterized in that: The connection portion between the connecting frame (21) and the semi-enclosed bracket body (3) is provided with a spring sheet (91), and the spring sheet (91) is used to push the connecting frame (21) to move in a direction away from the axis of the semi-enclosed bracket body (3).

10. A small space pipe cutting device according to any one of claims 7 to 9, characterized in that: An idler wheel (92) is also provided on the semi-enclosed bracket body (3), and the connecting cable (5) passes through the rotating wheels (23), the tightening wheel (6) and the idler wheel (92) of the multiple cutting assemblies.

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