Portable high-position reserved pipe cutting device

Abstract

The utility model belongs to the technical field of cutting-off devices, and particularly relates to a portable high-position reserved pipe cutting-off device which comprises an operating rod, a tool bit supporting plate and a movable tool bit, the tool bit supporting plate is fixedly connected with the end of the operating rod, and the movable tool bit is matched with the tool bit supporting plate and is in sliding connection with the operating rod. A first tension spring is arranged between the movable tool bit and the operating rod; a movable rod is connected to the operating rod in a sliding mode, and the movable rod is connected with the movable tool bit through a pull rope. A limiting handle is arranged on the operating rod, and movement of the movable rod is limited through the limiting handle. The tool bit supporting plate is aligned to the position of a pipe head needing to be cut off, the movable rod is released by reversely rotating the limiting handle, and the movable tool bit completes the cutting-off task under the elastic force effect of the first tension spring. All the operations can be carried out on the ground; through the use of the device, the carrying and erecting of a scaffold and the use of a ladder are avoided, and the safety and the working efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting devices, and in particular relates to a portable high-place reserved pipe cutting device. Background Art

[0002] During the construction process, the main stage of construction usually involves pre-buried pipes, including pre-buried main electrical pipelines and pre-buried wall screws and casings. After the main construction is completed and secondary construction is carried out, it is often necessary to cut the pipe ends reserved and pre-buried in the main stage to the appropriate length to avoid problems such as unsightly buildings caused by inconsistent reserved pipe lengths and affecting secondary installation operations. However, these pipe heads are often located in high places such as building roofs, beams, columns, and exterior walls. Cutting them requires setting up scaffolding or ladders for high-altitude operations, which requires a large investment and is relatively dangerous. Therefore, if workers can complete the pipe head cutting operation on the ground without setting up scaffolding or ladders, it will greatly save costs and construction costs. Utility Model Content

[0003] In response to the above technical problems, the utility model provides a portable high-altitude reserved pipe cutting device, which can complete the pipe head cutting operation on the ground.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A portable high-place reserved pipe cutting device includes an operating rod, a cutter head support plate and a movable cutter head. The cutter head support plate is fixedly connected to the end of the operating rod, the movable cutter head cooperates with the cutter head support plate and is slidably connected to the operating rod, and a first tension spring is provided between the movable cutter head and the operating rod; a movable rod is slidably connected to the operating rod, and the movable rod and the movable cutter head are connected by a pull rope; a limit handle is provided on the operating rod, and the movement of the movable rod is limited by the limit handle.

[0006] The limiting handle is hinged to the operating rod, and a hook portion is provided at one end of the limiting handle, which hooks the movable rod and limits the movement of the movable rod.

[0007] The movable rod is fixedly connected to a connecting tube which is slidably connected to the operating rod. The operating rod is provided with a connecting groove, and the movable rod passes through the connecting groove and is slidably connected to the connecting tube.

[0008] The pull rope is a steel wire rope.

[0009] The movable cutter head is fixedly connected to a slider which is slidably connected to an operating rod, and the operating rod is provided with a corresponding sliding groove; the two ends of the first tension spring are respectively connected to the slider and the operating rod.

[0010] The hook portion includes a fixed portion and a movable portion, the movable portion is hinged to the fixed portion and connected to a second tension spring, a first limit pin is provided on the limit handle, and the first limit pin limits the movable portion from rotating upward; a torsion spring is provided between the limit handle and the operating rod, and a second limit pin is fixed on the operating rod, and the second limit pin limits the limit handle from rotating to one side.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The movable rod drives the movable cutter head downward, stretching the first tension spring to generate elastic potential energy. The movable rod is then restricted by rotating the limit handle. The cutter head support plate is then aligned with the pipe head to be cut. The limit handle is then rotated in the opposite direction to release the movable rod. Under the elastic force of the first tension spring, the movable cutter head completes the cutting task.

[0013] The above operations can all be carried out on the ground; that is, by using the device, the transportation and erection of scaffolding and the use of ladders are avoided, thereby improving safety and work efficiency.

[0014] Through the structural arrangement of the fixed part and the movable part, the movable part can automatically clamp (hook) the movable rod after it moves downward, limiting its upward movement, eliminating the need to rotate the limit handle and further improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the main view of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0017] Figure 3 It is an axonometric drawing of the present utility model;

[0018] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0019] Figure 5 yes Figure 3 A partial enlarged view of point C in the middle;

[0020] Figure 6 yes Figure 3 A partial enlarged view of point D in the middle;

[0021] Figure 7 This is a schematic diagram of the connection structure between the movable cutter head and the movable rod of the utility model. Figure 1 ;

[0022] Figure 8 This is a schematic diagram of the connection structure between the movable cutter head and the movable rod of the utility model. Figure 2 ;

[0023] Figure 9 It is a structural diagram of the operating lever of the utility model;

[0024] Figure 10 This is a schematic diagram of the cutting state of the utility model;

[0025] Figure 11 It is a schematic diagram of another structure of the limit handle of the utility model in one direction;

[0026] Figure 12 This is a schematic diagram of another structure of the limit handle of the utility model in another direction;

[0027] Among them: 1 is the operating rod, 2 is the cutter head support plate, 3 is the movable cutter head, 4 is the first tension spring, 5 is the movable rod, 6 is the pull rope, 7 is the limit handle, 8 is the hook part, 9 is the connecting tube, 10 is the connecting groove, 11 is the slider, 12 is the slide groove, 13 is the fixed part, 14 is the movable part, 15 is the second tension spring, 16 is the first limit pin, 17 is the torsion spring, 18 is the second limit pin, and 19 is the pipe head. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figure 1-12 The device, shown in Figure 1, shows a portable high-altitude reserved pipe cutting device. The device comprises an operating rod 1, a cutter head support plate 2, and a movable cutter head 3. The cutter head support plate 2 is fixedly connected to the end of the operating rod 1, while the movable cutter head 3 engages with the cutter head support plate 2 and slides with the operating rod 1. During cutting, the cutter head support plate 2 is aligned with the pipe end to be cut, and the movable cutter head 3 moves to cut the pipe end.

[0030] The movable cutter head 3 preferably uses the elastic potential energy released by the spring as the driving force to drive it to move and complete the cutting operation. The specific structure is as follows:

[0031] A first tension spring 4 is installed between the movable cutter head 3 and the operating rod 1. A movable rod 5 is slidably connected to the operating rod 1. The movable rod 5 and the movable cutter head 3 are connected by a pull cord 6. When the movable rod 5 moves downward, the pull cord 6 drives the movable cutter head 3, generating elastic potential energy in the first tension spring 4. A limit handle 7 is installed on the operating rod 1. When the movable rod 5 moves downward, the limit handle 7 can be rotated to hook (lock) the movable rod 5, restricting its movement.

[0032] The specific operation process is as follows: From a conveniently located position on the ground, manually or foot-press the movable rod 5 downward (with the first tension spring 4 being pulled by the rope 6). Once downward, the limit handle 7 restricts its movement. Align the cutter head support plate 2 with the pipe head to be cut, then reverse the limit handle 7 to release the movable rod 5. The first tension spring 4 releases its elastic potential energy, pulling the movable cutter head 3 upward to complete the cutting task. This device eliminates the need for scaffolding and ladders, allowing the operation to be completed on the ground.

[0033] Furthermore, the limiting handle 7 preferably has the following structure: the limiting handle 7 is hingedly connected to the operating lever 1, and one end of the limiting handle 7 is provided with a hook portion 8, which hooks the movable rod 5 and restricts its movement. When the movable rod 5 moves downward, the limiting handle 7 is rotated to hook the movable rod 5 with the hook portion 8, thereby restricting its movement. When cutting is required, the limiting handle 7 is rotated in the opposite direction to disengage the hook portion 8 from the movable rod 5, thereby releasing the restriction on its movement.

[0034] Furthermore, a variety of structures can be used to achieve the sliding connection between the movable rod 5 and the operating rod 1, and the following structure is preferably used:

[0035] A connecting tube 9 is fixedly connected to the movable rod 5 , and the connecting tube 9 is located inside the operating rod 1 and is slidably connected to the operating rod 1 ; a connecting groove 10 is provided on the operating rod 1 , and the movable rod 5 passes through the connecting groove 10 and is slidably connected to the connecting tube 9 .

[0036] Furthermore, the pull rope 6 is a steel wire rope, and the two ends of the steel wire rope are fixedly connected to the movable rod 5 and the movable cutter head 3 respectively; when the movable rod 5 is connected to the connecting tube 9, the two ends of the steel wire rope can be fixedly connected to the connecting tube 9 of the movable rod 5 and the movable cutter head 3 respectively.

[0037] Furthermore, the movable cutter head 3 is fixedly connected to a slider 11 which is slidably connected to the operating rod 1; the slider 11 is located inside the movable rod 5, and one end of the slider 11 can extend through the slide groove 12 provided on the operating rod 1 and be connected to one end of the first tension spring 4, and the other end of the first tension spring 4 is connected to the operating rod 1.

[0038] Furthermore, although the movable rod 5 can be clamped by the hook portion 8, during the clamping process, the limiting handle 7 needs to be rotated by hand or foot, which is somewhat inconvenient.

[0039] Therefore, the hook portion 8 includes a fixed portion 13 and a movable portion 14. The movable portion 14 is hinged to the fixed portion 13 and connected to a second tension spring 15. The limiting handle 7 is provided with a first limiting pin 16, which restricts the upward rotation of the movable portion 14. That is, when the movable rod 5 moves downward, it contacts the movable portion 14, driving the movable portion 14 to rotate downward, and the second tension spring 15 is pulled by the pull rope 6. When the movable rod 5 moves to the bottom, it no longer contacts the movable portion 14. Under the action of the second tension spring 15, the movable portion 14 rotates upward and resets until it is restricted from further upward rotation by the first limiting pin 16. At this time, the external force on the movable rod 5 is removed, and under the action of the first tension spring 4, the movable rod 5 moves upward to contact the movable portion 14, and is restricted from further upward movement by the movable portion 14.

[0040] A torsion spring 17 is installed between the limit handle 7 and the operating rod 1. A second limit pin 18 is fixed to the operating rod 1, which restricts the limit handle 7 from rotating to one side. When cutting is required, the limit handle 7 is rotated in the opposite direction, causing the movable portion 14 to move until it separates from the movable rod 5. Under the action of the first tension spring 4, the movable rod 5 moves upward to complete the cutting operation. When the cutting operation is completed, the external force applied to the limit handle 7 is removed. Under the action of the torsion spring 17, the limit handle 7 rotates to one side until it contacts the second limit pin 18, restricting its further rotation to one side.

[0041] Only the preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments.

Claims

1. A portable high-place reserved pipe cutting device, characterized by: The utility model comprises an operating rod (1), a blade support plate (2) and a movable blade (3), wherein the blade support plate (2) is fixedly connected to the end of the operating rod (1), the movable blade (3) cooperates with the blade support plate (2) and is slidably connected to the operating rod (1), and a first tension spring (4) is provided between the movable blade (3) and the operating rod (1); a movable rod (5) is slidably connected to the operating rod (1), and the movable rod (5) and the movable blade (3) are connected by a pull rope (6); a limiting handle (7) is provided on the operating rod (1), and the movement of the movable rod (5) is limited by the limiting handle (7).

2. A portable high-place reserved pipe cutting device according to claim 1, characterized in that: The limiting handle (7) is hinged to the operating rod (1), and a hook portion (8) is provided at one end of the limiting handle (7), which hooks the movable rod (5) through the hook portion (8) and limits the movement of the movable rod (5).

3. The portable high-place reserved pipe cutting device according to claim 1, characterized in that: The movable rod (5) is fixedly connected to a connecting tube (9) that is slidably connected to the operating rod (1). The operating rod (1) is provided with a connecting groove (10). The movable rod (5) passes through the connecting groove (10) and is slidably connected to the connecting tube (9).

4. The portable high-place reserved pipe cutting device according to claim 1, characterized in that: The pull rope (6) is a steel wire rope.

5. The portable high-place reserved pipe cutting device according to claim 1, characterized in that: The movable cutter head (3) is fixedly connected to a slider (11) which is slidably connected to the operating rod (1), and the operating rod (1) is provided with a corresponding sliding groove (12); the two ends of the first tension spring (4) are respectively connected to the slider (11) and the operating rod (1).

6. The portable high-place reserved pipe cutting device according to claim 2, characterized in that: The hook portion (8) includes a fixed portion (13) and a movable portion (14), the movable portion (14) is hinged to the fixed portion (13) and connected to a second tension spring (15), a first limit pin (16) is provided on the limit handle (7), and the movable portion (14) is limited to rotate upward by the first limit pin (16); a torsion spring (17) is provided between the limit handle (7) and the operating rod (1), and a second limit pin (18) is fixed on the operating rod (1), and the limit handle (7) is limited to rotate to one side by the second limit pin (18).

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