Abrasive paper belt grinding device additionally arranged on angle grinder and pipeline periphery grinding method

Abstract

The invention relates to an abrasive paper belt grinding device additionally arranged on an angle grinder and a pipeline periphery grinding method. The abrasive paper belt grinding device comprises an abrasive paper belt and a base. The abrasive paper belt polishing device further comprises two idler wheels which are installed on the base side by side, the abrasive paper belt surrounds the two idler wheels, and the two ends of the abrasive paper belt are connected with the two idler wheels respectively. The two rollers synchronously rotate and alternately rotate forwards and backwards, and the abrasive paper belt reciprocates along with the two rollers; the abrasive paper belt grinding device is installed on the angle grinder, the angle grinder serves as a power source, and the angle grinder is connected with two idler wheels. And the angle grinder drives the two rollers to synchronously rotate and alternately rotate forwards and backwards. The pipeline periphery grinding method adopts the abrasive paper belt grinding device additionally arranged on the angle grinder and specifically comprises the following steps that (1) the two idler wheels abut against the periphery of the pipeline, and the abrasive paper belt bypasses the pipeline and is tensioned, and (2) the angle grinder is started, the two idler wheels synchronously rotate and alternately rotate forwards and backwards, and the abrasive paper belt reciprocates along with the two idler wheels to grind the periphery of the pipeline.

Description

Technical Field

[0001] The present invention relates to the maintenance of pipelines in power plants, and specifically relates to a sandpaper belt grinding device installed on a angle grinder and a method for grinding the outer circumference of a pipeline. Background Art

[0002] For the maintenance of pipelines in power plants, sandpaper grinding is required for some pipelines and pipeline butt welds; when the pipeline is against the wall and the gap is too small, the angle grinder cannot reach in, resulting in inability to grind. Summary of the Invention

[0003] In view of the above problems, the present invention provides a sandpaper belt grinding device installed on an angle grinder and a method for grinding the outer circumference of a pipeline, which can easily solve the problem that when the pipeline is against the wall and the gap is too small, the angle grinder cannot reach in, resulting in inability to grind.

[0004] The technical solution of the present invention: A sandpaper belt grinding device installed on an angle grinder, the sandpaper belt grinding device includes a sandpaper belt and a base; the sandpaper belt grinding device further includes two rollers, the two rollers are arranged side by side on the base, the sandpaper belt surrounds the two rollers, and the two ends are respectively connected to the two rollers; the two rollers rotate synchronously and alternately forward and reverse, and the sandpaper belt moves reciprocally accordingly; the sandpaper belt grinding device is installed on the angle grinder and uses the angle grinder as a power source, and the angle grinder is connected to the two rollers; the angle grinder drives the two rollers to rotate synchronously and alternately forward and reverse.

[0005] For further refinement of the above technical solution, the angle grinder is connected to the two rollers through a transmission mechanism; the transmission mechanism includes two small gears, a large gear, a turntable, and a connecting rod. The two small gears are installed on the base and are coaxial with the two rollers respectively. The large gear is installed on the base and meshes with the two small gears respectively. The turntable is installed 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 turntable rotates and drives the large gear to alternately forward and reverse through the connecting rod. The large gear alternately forward and reverse drives the two small gears to rotate synchronously and alternately forward and reverse, and the two rollers rotate synchronously and alternately forward and reverse with the two small gears.

[0006] For further refinement of the above technical solution, the large gear is fan-shaped; this can greatly compress the space and make the transmission mechanism compact.

[0007] For further refinement of the above technical solution, the connecting rod is a two-stage connecting rod; this can prevent the large gear and the turntable from jamming during rotation.

[0008] For further refinement of the above technical solution, the base is fan-shaped.

[0009] A method for grinding the outer periphery of a pipeline, which is to use the sandpaper belt grinding device installed on the angle grinder as described above, and specifically includes the following steps: 1) Press two rollers against the outer periphery of the pipeline, pass the sandpaper belt around the pipeline and tension it; 2) Start the angle grinder, the two rollers rotate synchronously and alternately forward and reverse, and the sandpaper belt moves reciprocally accordingly to grind the outer periphery of the pipeline.

[0010] The advantages of the present invention are reasonable design and ingenious concept. Grinding with a sandpaper belt can easily solve the problem that when the pipeline is against the wall and the gap is too small for the angle grinder to reach and cause inability to grind; and on this basis, the structure is improved to form a sandpaper belt grinding device installed on the angle grinder, which can use the angle grinder as a power source and is convenient to use. Description of the Drawings

[0011] Figure 1 It is a usage state diagram of the sandpaper belt grinding device installed on the angle grinder.

[0012] Figure 2 It is a structural schematic diagram of the sandpaper belt grinding device installed on the angle grinder.

[0013] Figure 3 It is a schematic diagram of the transmission structure.

[0014] In the figure, the sandpaper belt grinding device 1, the sandpaper belt 1-1, the base 1-2, the rollers 1-3, the transmission mechanism 1-4, the small gear 1-4-1, the large gear 1-4-2, the turntable 1-4-3, the connecting rod 1-4-4; the angle grinder 2; the pipeline 3. Detailed Embodiment

[0015] As Figures 1-3 shown, a sandpaper belt grinding device 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 arranged side by side on the base 1-2, and the sandpaper belt 1-1 surrounds the two rollers 1-3 and the two ends are respectively connected to the two rollers 1-3; the base 1-2 is fan-shaped; 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 installed on the base 1-2 and are coaxial with the two rollers 1-3 respectively. The large gear 1-4-2 is installed on the base 1-2 and meshes with the two small gears 1-4-1 respectively. The turntable 1-4-3 is installed 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 fan-shaped; the connecting rod 1-4-4 is a two-stage connecting rod.

[0016] Install the sandpaper belt grinding device 1 on the angle grinder 2 and connect the angle grinder 2 to the turntable 1-4-3. When grinding the outer circumference of the pipeline 3: 1) Press the two rollers 1-3 against the outer circumference of the pipeline 3, and the sandpaper belt 1-1 bypasses the pipeline 3 and is tensioned. 2) Start the angle grinder 2. The two rollers 1-3 rotate synchronously and alternately forward and reverse, and the sandpaper belt 1-2 reciprocates accordingly to grind the outer circumference of the pipeline 3.

[0017] The above embodiments are only for illustrating the technical concept and features of the invention, and the purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A sandpaper belt grinding device mounted on an angle grinder, the sandpaper belt grinding device comprising a sandpaper belt and a base; characterized in that: The sandpaper belt grinding device also includes two rollers, which are installed side by side on the base. The sandpaper belt surrounds the two rollers and is connected to the two rollers at both ends. The two rollers rotate synchronously and rotate forward and reverse alternately, and the sandpaper belt moves back and forth accordingly. The sandpaper belt grinding device is installed on an angle grinder and uses the angle grinder as a power source. The angle grinder is connected to two rollers; the angle grinder drives the two rollers to rotate synchronously and alternately forward and reverse.

2. A sandpaper belt grinding device mounted on an angle grinder, characterized in that: 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 installed on a base and are coaxial with two rollers respectively. The large gear is installed on the base and meshes with the two small gears respectively. The turntable is installed on the base. One end of the connecting rod is pivoted to the turntable, and the other end is pivoted to the large gear. The angle grinder is connected to the turntable; the angle grinder drives the turntable to rotate, and the turntable rotates and pulls the large gear to do alternating forward and reverse rotation through the connecting rod. The large gear does alternating forward and reverse rotation and drives the two small gears to rotate synchronously and alternately forward and reverse rotation, and the two rollers rotate synchronously with the two small gears and alternately forward and reverse rotation.

3. The sandpaper belt grinding device installed on an angle grinder according to claim 2, characterized in that: The large gear is fan-shaped.

4. The sandpaper belt grinding device installed on an angle grinder according to claim 2, characterized in that: The connecting rod is a secondary connecting rod.

5. The sandpaper belt grinding device installed on an angle grinder according to claim 1, characterized in that: The base is fan-shaped.

6. A method for polishing the outer circumference of a pipeline, characterized in that: The pipeline outer periphery grinding method adopts a sandpaper belt grinding device installed on an angle grinder as described in any one of claims 1 to 5, and specifically comprises the following steps: 1) Place two rollers against the outer circumference of the pipe, wrap the sandpaper belt around the pipe and tighten it; 2) Start the angle grinder. The two rollers rotate synchronously and alternately in forward and reverse directions. The sandpaper belt moves back and forth to grind the outer circumference of the pipe.

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