An outer tube hand-held electric power tool

Abstract

The utility model provides a kind of outer pipeline hand-held electric polishing tool, including shell, the hand-held part of shell is hollow pole body structure;The pole body end of shell is provided with gear box, the inside rotation of gear box is provided with driving gear set, driving gear set includes the first driving gear and the second driving gear of coaxial line setting, first driving gear, second driving gear are rotationally arranged in gear box interior, and the rotation of first driving gear and second driving gear is independent of each other;First driving gear and second driving gear are all coaxially provided with operating hole, and the pipeline that needs to be polished gear passes through operating hole, and grinding product is installed on operating hole inner wall;The hand-held part inside shell is further provided with motor for driving driving gear set to rotate.This embodiment is by polishing tool fully enclosed and is set on outer pipeline, after starting polishing tool, back and forth movement can be realized polishing by staff, to improve work efficiency, safety is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of portable polishing tools, and more specifically, to a handheld electric polishing tool for external pipes. Background Technology

[0002] Due to environmental factors, the surface of pipes ages and corrodes, requiring regular polishing. Traditional methods mainly involve manual filing, sandpaper, or electric angle grinders on the pipes.

[0003] Currently, manual grinding is inefficient and produces a lot of dust, while electric grinding is also inefficient, unsafe, and produces a lot of dust. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a handheld electric grinding tool for external pipes, so as to at least solve the technical problems of low efficiency and low efficiency of grinding tools in related technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A handheld electric polishing tool for external pipes includes a housing, and the handle portion of the housing is a hollow rod structure; A gear box is provided at the end of the rod of the outer shell. A moving gear set is rotatably arranged inside the gear box. The moving gear set includes a first moving gear and a second moving gear arranged on the same axis. Both the first moving gear and the second moving gear are rotatably arranged inside the gear box, and the rotation of the first moving gear and the second moving gear are independent of each other. Both the first and second moving gears have coaxial operating holes. The pipes that need to be ground pass through the operating holes, and the grinding products are installed on the inner wall of the operating holes. The handle of the outer casing also contains a motor for driving the gear set to rotate.

[0007] Preferably, one side of the first moving gear has a coaxially arranged support protrusion ring, and the other side of the first moving gear has a coaxially opened support ring groove. When the first moving gear and the second moving gear are coaxially engaged, the support protrusion ring of the second moving gear is coaxially rotatably engaged in the support ring groove of the first moving gear, so that the first moving gear and the second moving gear can be coaxially rotatably engaged. The first and second moving gears have the same structure.

[0008] Preferably, the front and rear sides of the gearbox are also provided with through holes corresponding to the operating holes, so that the pipe to be ground can pass through smoothly.

[0009] Preferably, a motor gear is mounted on the output shaft of the motor. The motor gear is a bevel gear structure and is horizontal. The motor gear is meshed with the bevel gear end of the conversion gear set. The spur gear end of the first conversion gear is meshed with the first moving gear, and the spur gear end of the second conversion gear is meshed with the second moving gear.

[0010] Preferably, a power supply module is installed inside the handheld part, which has a hollow rod structure.

[0011] Preferably, both the first moving gear and the second moving gear adopt a spliced ​​structure of two semi-circular gears, and the two semi-circular gears are connected and fixed by connecting bolts.

[0012] Preferably, the gear box has an openable / closing structure, with the connecting end of the openable / closing structure using a hinge connection and the snap-fit ​​end of the openable / closing structure using a snap-fit ​​connection for fixation.

[0013] Preferably, the outer cover of the gearbox is equipped with a dustproof protective cover to prevent dust during the grinding process.

[0014] Compared with the prior art, the grinding tool provided in this embodiment has operating holes coaxially opened on both the first and second moving gears. The pipe that needs to be ground passes through the operating holes. When the first and second moving gears rotate, the abrasive material installed on the inner wall of the operating hole can grind the outer wall of the pipe passing through the operating hole. In this embodiment, by fully enclosing the grinding tool on the outer pipe, the worker can perform grinding by moving the tool back and forth after it is started, thereby improving work efficiency and greatly enhancing safety. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0016] Figure 1 This is a structural diagram of a handheld electric grinding tool for external pipes according to this utility model; Figure 2 This is a side view of a handheld electric grinding tool for external pipes according to the present invention. Figure 3 This is a cross-sectional view of the moving gear assembly provided in an embodiment of the present utility model.

[0017] In the attached diagram: 1. Outer casing; 2. Battery; 3. Motor; 4. Conversion gear set; 5. Gearbox; 6. Dustproof protective cover; 7. Hinge; 8. Operating hole; 9. Buckle; 10. Connecting bolt; 11. Moving gear set; 111. First moving gear; 112. Second moving gear; 113. Supporting convex ring; 114. Supporting ring groove; 12. Motor gear; 13. First conversion gear; 14. Second conversion gear. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] like Figure 1 and Figure 2 The diagram shown is a structural diagram of a handheld electric polishing tool for external pipes provided in an embodiment of the present invention. Specifically, the polishing tool provided in this embodiment includes a housing 1, and the handheld part of the housing 1 is a hollow rod structure. Correspondingly, a gear box 5 is provided at the end of the rod of the outer shell 1. A moving gear set 11 is rotatably arranged inside the gear box 5. The moving gear set 11 includes a first moving gear 111 and a second moving gear 112 arranged on the same axis. The first moving gear 111 and the second moving gear 112 are rotatably connected on the same axis. That is, the first moving gear 111 and the second moving gear 112 are both rotatably arranged inside the gear box 5, and the rotation of the first moving gear 111 and the second moving gear 112 is independent of each other. Preferably, such as Figure 3 As shown, in this embodiment of the present disclosure, the first moving gear 111 and the second moving gear 112 have the same structure. Taking the first moving gear 111 as an example: The first moving gear 111 provided in this embodiment has a coaxially arranged support protrusion ring 113 on one side and a coaxially opened support ring groove 114 on the other side. When the first moving gear 111 and the second moving gear 112 are coaxially engaged, the support protrusion ring 113 of the second moving gear 112 is coaxially rotatably engaged in the support ring groove 114 of the first moving gear 111, so that the first moving gear 111 and the second moving gear 112 can be coaxially rotatably engaged.

[0021] In one optional embodiment, annular groove structures and convex ring structures are correspondingly provided on the inner walls of both sides of the gear box 5. The annular groove structure on the inner wall of the gear box 5 cooperates with the supporting convex ring 113 of the first moving gear 111, while the convex ring structure on the inner wall of the gear box 5 cooperates with the supporting annular groove 114 of the second moving gear 112, thereby achieving the effect of coaxially rotating and cooperating the first moving gear 111 and the second moving gear 112 within the gear box 5.

[0022] For further details, please refer to [link / reference]. Figures 1-3 In this embodiment of the utility model, both the first moving gear 111 and the second moving gear 112 are coaxially provided with operating holes 8. The pipe that needs to be polished passes through the operating hole 8. A special grinding tool can be installed on the inner wall of the operating hole 8. The grinding tool is installed in the operating hole 8 in the form of a snap fastener, which is convenient for installation and disassembly. In specific implementation, when the first moving gear 111 and the second moving gear 112 rotate, the outer wall of the pipe passing through the operating hole 8 can be polished using the grinding tool.

[0023] Understandably, the front and rear sides of the gear box 5 also have through holes corresponding to the operation hole 8, so that the pipe to be ground can pass through smoothly.

[0024] Furthermore, in this embodiment of the utility model, the handheld part of the outer shell 1 is also provided with a motor 3 for driving the moving gear set 11 to rotate. That is, the motor 3 drives the first moving gear 111 and the second moving gear 112 to rotate synchronously but in opposite directions (i.e., the two rotate at the same time, but the rotation directions can be opposite), and then the grinding material in the operating hole 8 is used to grind the outer wall of the pipe.

[0025] Specifically, in one optional embodiment, a motor gear 12 is mounted on the output shaft of the motor 3. The motor gear 12 is a bevel gear structure and is horizontal. The motor gear 12 meshes with the bevel gear end of the conversion gear set 4, that is, the motor gear 12 simultaneously meshes with the bevel gear ends of the first conversion gear 13 and the second conversion gear 14. Among them, the spur gear end of the first conversion gear 13 meshes with the first moving gear 111, and the spur gear end of the second conversion gear 14 meshes with the second moving gear 112. When the motor gear 12 rotates, it drives the first conversion gear 13 and the second conversion gear 14 to rotate simultaneously (in opposite directions), which can further drive the first moving gear 111 and the second moving gear 112 to rotate simultaneously, allowing the outer wall of the pipe passing through the operating hole 8 to be polished using abrasive materials.

[0026] In one optional embodiment, a power supply module is provided inside the handheld part of the hollow rod structure; In this embodiment, the power supply module is a battery, which can be a storage battery or an external power supply connector. The purpose of the power supply module is to supply power to the electrical components in the grinding tool. In specific implementation, the battery 2 or the external power supply connector can be reasonably set as needed, and there is no specific limitation.

[0027] The first moving gear 111 and the second moving gear 112 both adopt a spliced ​​structure of two semi-circular gears, which makes it convenient to put the pipe to be ground into the operating hole 8 after opening; the two semi-circular gears are connected and fixed by connecting bolts 10. In an optional embodiment, the gear box 5 has an openable structure. The connecting end of the openable structure is connected by a hinge 7, and the snap-fit ​​end of the openable structure is connected and fixed by a buckle 9. This makes it convenient to further separate and disassemble the halves of the first moving gear 111 and the second moving gear 112 after opening the gear box 5, which facilitates installation and maintenance.

[0028] In an optional embodiment, the outer cover of the gear box 5 is provided with a dustproof protective cover 6, which serves to prevent dust during the grinding process; similarly, the dustproof protective cover 6 has an opening and closing structure, the connecting end of the opening and closing structure is connected by a hinge 7, and the snap-fit ​​end of the opening and closing structure is connected and fixed by a buckle 9, so that the dustproof protective cover 6 can be opened.

[0029] In summary, the grinding tool provided in this embodiment of the present disclosure, by fully enclosing the grinding tool on the outer pipe, allows the worker to perform grinding by moving the tool back and forth after it is started, thereby improving work efficiency and greatly enhancing safety.

[0030] To enhance safety, the dust cover 6 is interlocked with the power supply module 2. When the dust cover 6 is opened, the power supply to the power supply module 2 is cut off. This is a safety protection device that is safe and reliable.

[0031] Understandably, after the staff opens the dust cover 6, opens the gear box 5, installs the moving gear set 11 that matches the pipe diameter, closes the gear box 5 and the dust cover 6, turns on the power, and can use the grinding tool to move horizontally to grind the outer pipe.

[0032] The above solutions are merely illustrative examples of preferred embodiments, but are not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0033] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0034] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A handheld electric grinding tool for external pipes, characterized in that, Including the outer casing; The handle portion of the outer casing is a hollow rod structure; A gear box is provided at the end of the rod of the outer shell. A moving gear set is rotatably arranged inside the gear box. The moving gear set includes a first moving gear and a second moving gear arranged on the same axis. Both the first moving gear and the second moving gear are rotatably arranged inside the gear box, and the rotation of the first moving gear and the second moving gear are independent of each other. Both the first and second moving gears have coaxial operating holes. The pipes that need to be ground pass through the operating holes, and the grinding products are installed on the inner wall of the operating holes. The handle of the outer casing also contains a motor for driving the gear set to rotate.

2. The handheld electric grinding tool for external pipes according to claim 1, characterized in that, The first moving gear has a coaxially arranged support protrusion on one side and a coaxially opened support ring groove on the other side. When the first moving gear and the second moving gear are coaxially engaged, the support protrusion of the second moving gear is coaxially rotatably engaged in the support ring groove of the first moving gear, so that the first moving gear and the second moving gear are coaxially rotatably engaged. The first and second moving gears have the same structure.

3. The handheld electric grinding tool for external pipes according to claim 2, characterized in that, The front and rear sides of the gearbox also have through holes that correspond to the operating holes.

4. The handheld electric grinding tool for external pipes according to claim 2, characterized in that, A motor gear is mounted on the output shaft of the motor; the motor gear is a bevel gear structure. The motor gears are horizontal; The motor gear is meshed with the bevel gear end of the conversion gear set, the spur gear end of the first conversion gear is meshed with the first moving gear, and the spur gear end of the second conversion gear is meshed with the second moving gear.

5. A handheld electric polishing tool for external pipes according to any one of claims 2 to 4, characterized in that, The power supply module is installed inside the handheld part, which has a hollow rod structure.

6. A handheld electric grinding tool for external pipes according to claim 5, characterized in that, Both the first and second moving gears adopt a spliced ​​structure of two semi-circular gears, which are connected and fixed by connecting bolts.

7. A handheld electric grinding tool for external pipes according to claim 6, characterized in that, The gearbox has an openable / closing structure. The connecting end of the openable / closing structure is connected by hinges, and the snap-fit ​​end of the openable / closing structure is fixed by snap-fit.

8. A handheld electric grinding tool for external pipes according to claim 7, characterized in that, The gearbox is equipped with a dustproof protective cover.

Images