A sanding device for an angle grinder

Abstract

This utility model relates to a sandpaper belt sanding device mounted on an angle grinder. The sandpaper belt sanding device includes a sandpaper belt and a base. It also includes two rollers mounted side-by-side on the base. The sandpaper belt surrounds the two rollers, with each end connected to one of them. The two rollers rotate synchronously and alternately in forward and reverse directions, causing the sandpaper belt to reciprocate. The sandpaper belt sanding device is mounted on the angle grinder, which serves as its power source. The angle grinder is connected to the two rollers. The angle grinder drives the two rollers to rotate synchronously and alternately in forward and reverse directions. Using a sandpaper belt for sanding easily addresses the problem of insufficient space for the angle grinder to reach pipes close to walls, preventing sanding. Furthermore, the structure is improved to form a sandpaper belt sanding device mounted on an angle grinder, which is convenient to use and powered by the angle grinder.

Description

Technical Field

[0001] This utility model relates to pipeline maintenance in power plants, specifically to a sandpaper belt grinding device mounted on an angle grinder. Background Technology

[0002] Power plant pipeline maintenance requires sanding some pipes and pipe welds; however, when the pipe is close to a wall, the gap is too small for the angle grinder to reach, making sanding impossible. Utility Model Content

[0003] In view of the above problems, this utility model proposes a sandpaper belt grinding device that can be added to an angle grinder, which can easily solve the problem of the angle grinder being unable to reach the wall when the pipe is close to the wall and the gap is too small, thus making it impossible to grind.

[0004] The technical solution of this utility model:

[0005] A sandpaper belt polishing device mounted on an angle grinder, comprising a sandpaper belt and a base; the sandpaper belt polishing device further comprises two rollers mounted side by side on the base, the sandpaper belt surrounding the two rollers and having its two ends connected to the two rollers respectively; the two rollers rotate synchronously and alternately in forward and reverse directions, and the sandpaper belt moves back and forth accordingly; the sandpaper belt polishing device is mounted on the angle grinder and uses the angle grinder as a power source, the angle grinder being connected to the two rollers; the angle grinder drives the two rollers to rotate synchronously and alternately in forward and reverse directions.

[0006] Further refining the above technical solution, the angle grinder is connected to the two rollers via a transmission mechanism. The transmission mechanism includes two small gears, a large gear, a turntable, and a connecting rod. The two small gears are mounted on a base and are coaxial with the two rollers respectively. The large gear is mounted on the base and meshes with the two small gears respectively. The turntable is mounted on the base. One end of the connecting rod is pivotally connected to the turntable, and the other end is pivotally connected to the large gear. The angle grinder is connected to the turntable. The angle grinder drives the turntable to rotate. The rotation of the turntable, through the connecting rod, pulls the large gear to alternately rotate forward and backward. The alternating forward and backward rotation of the large gear drives the two small gears to rotate synchronously and alternately rotate forward and backward. The two rollers rotate synchronously with the two small gears and alternately rotate forward and backward.

[0007] Further refining the above technical solution, the large gear is sector-shaped, which greatly compresses space and makes the transmission mechanism compact.

[0008] Further refining the above technical solution, the connecting rod is a two-stage connecting rod; it can prevent the large gear and turntable from jamming during rotation.

[0009] Further refining the above technical solution, the base is fan-shaped.

[0010] A method for grinding the outer circumference of a pipe, wherein the method employs the aforementioned sandpaper belt grinding device mounted on an angle grinder, specifically including the following steps:

[0011] 1) Place the two rollers against the outer circumference of the pipe, wrap the sandpaper around the pipe and tighten it;

[0012] 2) Start the angle grinder. The two rollers rotate synchronously and alternately in forward and reverse directions. The sandpaper belt moves back and forth accordingly to grind the outer circumference of the pipe.

[0013] The advantages of this utility model are that it has a reasonable design and a well-conceived bridge surface. It uses sandpaper belts for sanding, which can easily solve the problem of the angle grinder being unable to reach the pipe when it is close to the wall and the gap is too small, thus making it impossible to sand. On this basis, the structure is improved to form a sandpaper belt sanding device that can be installed on the angle grinder, which can use the angle grinder as a power source and is convenient to use. Attached Figure Description

[0014] Figure 1 This is a diagram showing the usage status of the sandpaper belt grinding device installed on an angle grinder.

[0015] Figure 2 This is a schematic diagram of the sandpaper belt grinding device installed on an angle grinder.

[0016] Figure 3 This is a schematic diagram of the transmission structure.

[0017] The diagram shows a sandpaper belt grinding device 1, sandpaper belt 1-1, base 1-2, roller 1-3, transmission mechanism 1-4, pinion 1-4-1, gear 1-4-2, turntable 1-4-3, connecting rod 1-4-4; angle grinder 2; and pipe 3. Detailed Implementation

[0018] like Figure 1-3 As shown, a sandpaper belt grinding device is installed on an angle grinder. The sandpaper belt grinding device 1 includes a sandpaper belt 1-1, a base 1-2, and two rollers 1-3. The two rollers 1-3 are mounted side by side on the base 1-2. The sandpaper belt 1-1 surrounds the two rollers 1-3 and its two ends are respectively connected to the two rollers 1-3. The base 1-2 is fan-shaped.

[0019] The transmission mechanism 1-4 includes two small gears 1-4-1, a large gear 1-4-2, a turntable 1-4-3, and a connecting rod 1-4-4. The two small gears 1-4-1 are mounted on the base 1-2 and are coaxial with the two rollers 1-3 respectively. The large gear 1-4-2 is mounted on the base 1-2 and meshes with the two small gears 1-4-1 respectively. The turntable 1-4-3 is mounted on the base 1-2. One end of the connecting rod 1-4-4 is pivotally connected to the turntable 1-4-3, and the other end is pivotally connected to the large gear 1-4-2. The large gear 1-4-2 is sector-shaped. The connecting rod 1-4-4 is a two-stage connecting rod.

[0020] Install the sandpaper belt grinding device 1 onto the angle grinder 2, connecting the angle grinder 2 to the turntable 1-4-3; when grinding the outer circumference of the pipe 3:

[0021] 1) Place the two rollers 1-3 against the outer circumference of the pipe 3, and wrap the sandpaper strip 1-1 around the pipe 3 and tighten it;

[0022] 2) Start the angle grinder 2. The two rollers 1-3 rotate synchronously and alternately in forward and reverse directions. The sandpaper belt 1-2 moves back and forth accordingly to grind the outer periphery of the pipe 3.

[0023] The above embodiments are only for illustrating the technical concept and features of the utility model, and are intended to enable those skilled in the art to understand the content of the utility model and implement it accordingly. They should not be construed as limiting the scope of protection of the utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the utility model should be covered within the scope of protection of the utility model.

Claims

1. A sandpaper belt polishing device mounted on an angle grinder, the sandpaper belt polishing device comprising a sandpaper belt and a base; characterized in that, The sandpaper belt polishing device also includes two rollers, which are mounted side by side on a base. The sandpaper belt wraps around the two rollers and is connected to each roller at both ends. The two rollers rotate synchronously and alternately in forward and reverse directions, causing the sandpaper belt to reciprocate accordingly. The sandpaper belt polishing device is mounted on an angle grinder, which is used as a power source. The angle grinder is connected to the two rollers. The angle grinder drives the two rollers to rotate synchronously and alternately in forward and reverse directions. The angle grinder is connected to two rollers via a transmission mechanism. The transmission mechanism includes two small gears, a large gear, a turntable, and a connecting rod. The two small gears are mounted on a base and are coaxial with the two rollers respectively. The large gear is mounted on the base and meshes with the two small gears respectively. The turntable is mounted on the base. One end of the connecting rod is pivotally connected to the turntable, and the other end is pivotally connected to the large gear. The angle grinder is connected to the turntable. The angle grinder drives the turntable to rotate. The rotation of the turntable, through the connecting rod, pulls the large gear to alternately rotate forward and backward. The alternating forward and backward rotation of the large gear drives the two small gears to rotate synchronously and alternately rotate forward and backward. The two rollers rotate synchronously with the two small gears and alternately rotate forward and backward.

2. A sanding device for attachment to an angle grinder according to claim 1, characterized in that The large gear is sector-shaped.

3. The abrasive belt sander device for an angle grinder according to claim 1, wherein The connecting rod is a two-stage connecting rod.

4. The abrasive belt sander device for an angle grinder according to claim 1, wherein The base is fan-shaped.

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