Manual cut-off device for broken pipe wire
By designing a manual cutter for pipe breaking wire including cutting tool, connecting shaft, rocking handle and pressing part, the problem that the prior art cannot effectively remove rust and broken wire is solved, and the rapid, safe and effective cutting of pipe breaking wire is achieved.
Patent Information
- Application Number
- CN202421606279.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-09
AI Technical Summary
Existing wire breakers cannot effectively remove broken wires that are rusted inside the equipment. They usually slip or break directly, and the removal work cannot be completed quickly and safely.
A manual cutter of the broken wire is designed, including a cutting tool, a connecting shaft, a rocker and a pressing part. Through the combination of a conical inclined cutting edge and a cylindrical optical blade, angular contact cutting of the broken wire is realized, and combined with the operation of axial feeding and circumferential shaking, it ensures complete cutting of the broken wire.
This device can easily, effectively, safely and quickly remove the broken pipe wires rusted in the equipment. Regardless of whether the broken wire is stuck or rusted, it can perfectly remove the broken pipe wires, avoiding the breakage problems caused by slippage or excessive force imposition of traditional tools.
Smart Images
Figure CN223013086U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of broken wire extraction, in particular to a manual pipe broken wire cutter. Background Technique
[0002] Affected by the flow rate, pH value of the fluid inside the threaded connection steel pipe and various trace elements contained in the fluid, electrochemical reactions will occur in some places on the pipe wall, changing the structure of the pipe wall. This phenomenon is called pipe corrosion. As the equipment is used for a longer time, the corrosion products generated by the pipe corrosion phenomenon will accumulate on the pipe wall, especially at the threaded connection steel pipe. Rusting, thinning, peeling, etc. will eventually cause the internal thread part of the equipment to break off at the root, usually called pipe fitting broken wire. When pipe fitting broken wire occurs, the broken wire head remaining inside the equipment after breaking is also combined with the equipment due to problems such as rust and deformation, making it very difficult to remove and requiring special devices to complete the removal work.
[0003] However, the current removal tool, the broken wire extractor, all works on the principle of reverse thread expansion and screwing out. It can be applied to mechanically broken wires that were not corroded and not combined with the equipment in the early stage, but it cannot remove the broken wires rusted inside the equipment. Generally, the extractor will slip or directly break, and cannot quickly and effectively remove the residual broken wires inside the equipment. Content of the Utility Model
[0004] In order to overcome the deficiencies of the prior art, the utility model provides a manual pipe broken wire cutter, which can conveniently, effectively, safely and quickly cut the pipe broken wires rusted inside the equipment.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A manual pipe broken wire cutter includes a cutting tool, a connecting shaft, a crank and a pressing part; the front end of the tool head of the cutting tool is a conical inclined plane cutting edge, the tool handle of the cutting tool is connected to one end of the connecting shaft, and the axis of the tool handle of the cutting tool is the same as that of the connecting shaft; the crank is fixedly connected to the connecting shaft and is perpendicular to the connecting shaft; the other end of the connecting shaft is threadedly connected to the pressing part.
[0007] Further, after the conical inclined plane cutting edge of the tool head of the cutting tool, there is a cylindrical finishing edge.
[0008] Further, one end of the connecting shaft is provided with a radial through hole, and the other end is provided with an external thread.
[0009] Further, the crank includes a crank rod and a retaining cap, and the retaining cap is fixedly connected to both ends of the crank rod.
[0010] Further, the pressing part includes a nut and a hand pressing piece, and the hand pressing piece is fixedly connected to the end face of the nut.
[0011] Furthermore, it also includes a rubber pad which is fixedly connected to the hand-operated flap.
[0012] Compared with the prior art, the utility model has at least the following technical effects or advantages:
[0013] 1. For existing wire break extractors, they all use reverse threads to tighten more and more, expand inside the broken wire, and rotate in the reverse direction to take out the broken wire. They are only applicable to the situation where the broken wire is not screwed in too tightly. In case of rusted or stuck situations, generally, either they slip inside and cannot be taken out, or they are directly broken due to excessive force when expanding too tightly.
[0014] The utility model is provided with a cutting tool, a connecting shaft, a rocking handle and a pressing part. One hand pushes the pressing part to press the cutting tool against the broken pipe thread. Since the front end of the tool head is conical, automatic centering can be achieved. Since the pressing part and the connecting shaft are in threaded connection, axial feed can be realized without rotating the force-applying hand when pressing. At this time, the other hand holds the end of the rocking handle and reciprocates the rocking handle circumferentially with the connecting shaft as the center, so that the cutting tool performs angular contact cutting on the inner wall of the broken pipe thread until all the broken pipe threads are cut off. The utility model removes the broken wire in the form of cutting, and can perfectly remove the broken pipe thread in the form of cutting regardless of any situation such as being stuck or rusted.
[0015] 2. There is a rubber pad at the end of the pressing part of the utility model, which can effectively prevent hand abrasion and play a role in protecting the hand. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of the utility model.
[0017] Figure 2 It is a schematic structural diagram of the cutting tool of the utility model.
[0018] Figure 3 It is a schematic structural diagram of the connecting shaft of the utility model.
[0019] Figure 4 It is a schematic structural diagram of the rocking handle of the utility model.
[0020] Figure 5 It is a front view of the schematic structural diagram of the pressing part of the utility model.
[0021] Figure 6 It is a side view of the schematic structural diagram of the pressing part of the utility model.
[0022] In the figure:
[0023] 1 - cutting tool, 101 - cemented carbide tool head, 102 - tool shank, 2 - connecting shaft, 201 - radial through hole, 202 - external thread, 3 - rocking handle, 301 - retaining cap, 302 - rocking handle rod, 4 - pressing part, 401 - nut, 402 - hand-operated flap, 403 - rubber pad Detailed implementation manners
[0024] The embodiments of the present utility model will be described in detail below. To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0027] In the description of the present utility model, it should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.
[0028] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the sake of convenience in description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0029] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings and thus should not be construed as limiting the protection scope of the present utility model. Embodiment
[0030] As Figures 1-6 shown, the present utility model is a manual cutter for cutting off pipe threads, including a cutting tool 1, a connecting shaft 2, a crank 3, and a pressing part 4.
[0031] The cutting tool 1 is composed of a cemented carbide cutting head 101 and a tool handle 102. The front end of the cemented carbide cutting head 101 is a conical inclined cutting edge, and a cylindrical finishing edge is provided behind the conical inclined cutting edge. The tool handle 102 is cylindrical.
[0032] The connecting shaft 2 is cylindrical, with a radial through hole 201 at one end and an external thread at the other end.
[0033] The crank 3 includes a crank rod 302 and a retaining cap 301, and two retaining caps 301 are fixedly connected to both ends of the crank rod 302.
[0034] The pressing part 4 includes a nut 401, a hand pressing washer 402, and a rubber pad 403. The hand pressing washer 402 is fixedly connected to the end face of the nut 401, and the rubber pad 403 is fixedly connected to the hand pressing washer 402.
[0035] The cutting tool 1, the crank 3, and the pressing part 4 are connected into a whole by the connecting shaft 2. The tool handle 102 of the cutting tool 1 is fixedly connected to one end of the connecting shaft 2, and the tool handle 102 of the cutting tool 1 and the connecting shaft 2 are coaxial. The crank 3 passes through the radial through hole 201 on the connecting shaft 2 and is fixedly connected to the connecting shaft 2 and perpendicular to the axis of the connecting shaft 2. The nut 401 of the pressing part 4 is threadedly connected to the other end of the connecting shaft 2.
[0036] The working principle and process of the present utility model are as follows:
[0037] The cutting tool 1 is the cutting part. It mainly uses the conical inclined cutting edge at the front of the cemented carbide tool tip 101 to perform angular contact cutting on the inner wall of the broken pipe thread. The angular contact cutting has a smaller contact surface and is more labor-saving. A cylindrical finishing edge behind the inclined cutting edge of the cemented carbide tool tip 101 can clean the inner wall of the broken wire, leaving only the external thread part of the broken pipe thread (only one turn of iron wire remains after cutting).
[0038] During use, first align the cemented carbide tool tip 101 with the inner diameter of the broken pipe thread. Push the pressing part 4 with one hand to press the front tool tip against the broken pipe thread. Since the front of the tool tip is conical, automatic centering can be achieved. There is a rubber pad 403 at the end of the pressing part 4 to effectively prevent the device from grinding the hand. Since the pressing part 4 and the connecting shaft 2 are threadedly connected, axial feed can be achieved without rotating the applying hand during pressing. At this time, hold the end of the crank 3 (the longest force arm) with the other hand, and reciprocally swing the crank 3 around the connecting shaft 2. The swinging angle is not less than 60 degrees. In this way, one hand holds the pressing part 4 to achieve feed, and the other hand reciprocally swings the crank 3 to make the cemented carbide tool tip 101 of the cutting tool 1 perform angular contact cutting on the inner wall of the broken pipe thread until all the broken pipe threads are cut off. Use a screwdriver or awl to pick out the external thread of the broken pipe thread remaining in the internal thread of the device (only one spiral iron wire remains).
[0039] The present utility model can conveniently, effectively, safely and quickly cut off the broken pipe thread rusted in the device.
[0040] The protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.
Claims
1. Broken wire manual cutter, characterized by: It includes a cutting blade, a connecting shaft, a crank handle and a pressing part; The front end of the cutter head of the cutter is a tapered bevel cutting edge, the handle of the cutter is connected to one end of the connecting shaft, and the axis of the handle of the cutter is the same as that of the connecting shaft; The crank is fixedly connected to the connecting shaft and is perpendicular to the connecting shaft; The other end of the connecting shaft is threadedly connected to the pressing portion.
2. The manual cutter for broken wire according to claim 1, characterized in that: A cylindrical finishing edge is arranged behind the conical bevel cutting edge of the cutter head of the cutter.
3. The manual cutter for broken wire according to claim 1, characterized in that: One end of the connecting shaft is provided with a radial through hole, and the other end is provided with an external thread.
4. The manual cutter for broken wire according to claim 1, characterized in that: The crank comprises a crank rod and a stop cap, wherein the stop cap is fixedly connected to two ends of the crank rod.
5. The manual cutter for broken wire according to claim 1, characterized in that: The pressing part comprises a nut and a hand-pressing baffle, and the hand-pressing baffle is fixedly connected to the end surface of the nut.
6. The manual cutter for broken wire according to claim 5, characterized in that: The utility model also comprises a rubber pad which is fixedly connected to the hand-pressed baffle.