KR20130038724A - Device for grinding the surface - Google Patents

Abstract

PURPOSE: A device for grinding a surface is provided to easily maintain the direction of grinding, to obtain an even grinding surface, and to fast replace a component in case of malfunction. CONSTITUTION: A device for grinding a surface comprises a driving unit(200), a grinding unit(400), a power transmission unit(300), and a guide unit(500). The driving unit is connected to a main unit(100). The grinding unit is connected to the main unit. The power transmission unit is connected to the main unit. The guide unit is connected to the rear of the main unit.

Description

Surface Polishing Machine {DEVICE FOR GRINDING THE SURFACE}

The present invention relates to a surface polishing apparatus, and more particularly, to a polishing apparatus for removing rust, surface defects, roll damage and welding residues generated in the ship drying process occurs on the surface of the plate used for lathe drying.

As the industry develops, the volume of logistics increases and the need for transportation increases. Among them, the shipbuilding industry has developed a lot as a safe and economical advantage as a long-distance means of transportation, and especially in the world market, Korea's shipbuilding industry is growing so much that it can compete with the first and second place. Growing.

In general, the ship is constructed by welding a plurality of steel plates and should remove the welding residue or rust generated on the hull surface after the welding operation, PIM due to surface defects and roll damage.

However, in the related art, the surface polishing apparatus is driven by the rotation axis of the abrasive being perpendicular to the steel sheet, which cannot obtain a constant polishing surface due to the difference in the amount of polishing between the center and the outside.

In addition, in order to obtain an even polishing surface, the conventional abrasive must always be perpendicular to the steel sheet, and it is impossible for an operator who has been working for a long time to always maintain the vertical. The polishing surface becomes uneven.

In addition, the operator has to withstand the warpage that occurs when the abrasive is rotated and the plate surface is polished.

In addition, the operation of polishing the surface of the plate generates a lot of load on a device that generates power, such as a motor, so that durability may be degraded and failure may occur. However, the conventional surface polishing apparatus has a complicated coupling structure, which makes it difficult to replace the surface quickly.

In addition, there is a position of the handle suitable for working according to the height of the worker, the conventional handle is not able to adjust the height and exerts a strain on the body of the worker.

Accordingly, the present invention is to solve this conventional problem, the problem to be solved of the present invention is to easily maintain the direction to be polished, to have a constant and even polishing surface, it is possible to replace parts quickly when a failure occurs It is to provide a surface grinding machine.

Surface polishing apparatus according to an embodiment of the present invention is coupled to the main body unit and the main body unit and the driving unit for generating power and the grinding unit coupled to the main body unit using a rotating force to polish the surface of the plate and the The power transmission unit coupled to the main body unit to transfer the power generated by the drive unit to the polishing unit and the rear side of the main body unit coupled to the distortion generated in the main body unit by the rotational force of the polishing unit during the plate surface polishing And a guide unit for supporting the main body unit with a repulsive force by elastic force when the main body unit rotates with respect to one side to adjust the height of the polishing unit.

The main body unit accommodates the power transmission unit therein, one side is coupled to the polishing unit and the other side is coupled to the drive unit and a pair of traveling wheels for supporting the body housing and one side of the body housing It may include a handle provided in.

The handle is a height adjustment member and the first height adjustment member including a first height adjustment member fixed to the main body unit and a hole formed therein and a second height adjustment member for sliding through the first height adjustment member to slide. It is provided between the height adjusting member and the second height adjusting member may be made of a height fixing member for fixing the second height adjusting member.

The polishing unit has one side coupled to the power transmission unit vertically, the outer peripheral surface of the cylindrical friction with the surface of the plate material to prevent the abrasive and the portion of the abrasive to polish the abrasive and the power transmission unit is generated in the power transmission unit It may include an impeller to remove the foreign matter accumulated in the abrasive cover by generating wind power with a rotational force.

The power transmission unit is coupled to the main shaft and the main shaft coupled to the polishing unit one side of the first power transmission member coupled to one side of the drive unit to transfer the power generated by the drive unit, the first It may include a second power transmission member for providing power to the polishing unit transmitted through the power transmission member.

The guide unit is provided with a guide body rotatably coupled to one side of the pair of auxiliary wheels and the auxiliary wheel, and a first coupling member and the guide body rotatably coupled to the main body unit provided at one side of the guide body. A second coupling member rotatably coupled to an upper portion and a sliding member coupled to one side of the second coupling member and a third coupling member coupled to one side of the sliding member and rotatably coupled to the main body unit and the first coupling member It may include an elastic member provided between the second coupling member and the third coupling member to push one surface of the second coupling member and the third coupling member by the elastic force.

According to the surface polishing apparatus according to the present invention, when the abrasive is worn, the worker can easily transfer the polishing unit to the lower portion by simply pressing the handle downward.

In addition, by replacing the power transmission unit with a bevel gear, the power can be transmitted more efficiently than the driving method by the belt. As a result, the fastening structure is simplified, and if a failure occurs, only the failed part can be removed and replaced or repaired.

In addition, the outer periphery of the cylindrical abrasive is mounted to contact with the plate to be polished to block the occurrence of partial wear during polishing.

In addition, the guide unit is provided on the rear of the main unit to reduce the distortion caused during polishing.

In addition, the height of the handle can be adjusted to adjust the height of the handle according to the height of the worker does not exert a burden on the body of the worker.

1 is a perspective view showing a surface polishing apparatus according to a first embodiment of the present invention.
2 is a perspective view of the surface polishing apparatus of FIG.
3 is a perspective view illustrating an exploded state of the surface polishing apparatus of FIG. 1.
4 is a partial cross-sectional perspective view of a part of the main unit of the surface polishing apparatus of FIG. 1;
5 is a front view showing a handle of the surface polishing apparatus according to another embodiment.
6 is a side view showing an operating state of the surface polishing apparatus of FIG.
FIG. 7 is a side view illustrating an operating state of the surface polishing apparatus of FIG. 1. FIG.
8 is a side view illustrating an operating state of the surface polishing apparatus of FIG. 1.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text.

It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

≪ Example 1 >

1 and 2 are a perspective view for explaining a surface polishing apparatus according to an embodiment of the present invention, Figure 3 is an exploded perspective view showing an exploded state of the surface polishing apparatus and Figure 4 is a part cut part of the main unit Sectional perspective view.

1, 2, 3, and 4, the surface polishing apparatus 1000 according to the present embodiment is the main body unit 100 and the main body unit 100 to enable the operator to transfer in the desired direction Coupled to the drive unit 200 for generating power, coupled to the main body unit 100, a polishing unit 300 for polishing the surface of the plate (P) by using a rotational force, and to the main body unit 100 The power transmission unit 400 and coupled to one side of the body unit 100 and coupled to the power transmission unit 400 to transfer the power generated in the drive unit 200 to the polishing unit 300, the polishing unit of the surface of the plate (P) surface It is configured to include a guide unit 500 to prevent the distortion caused by the rotational force of the 300, to adjust the height of the polishing unit 300 by rotating based on one side of the main body unit (100).

The main body unit 100 forms the basic body of the surface polishing unit 100, and the main body housing 110 so that the surface of the plate material (P) by the operator can be transported or set up when not in use. The driving wheel 120, the handle 130, the drive unit seating member 140, the support member 150 is formed.

The body housing 110 may be installed or integrated with the upper portion of the body unit 100. For example, the body housing 110 may be integrally molded through a mold. The main body housing 110 has a polishing unit coupling portion 111 that can be fixed in combination with the polishing unit 300 and a driving unit coupling portion 112 that can be fixed in combination with the driving unit 200. A power transmission unit accommodating part 113 capable of accommodating the power transmission unit 400 is formed therein.

The polishing unit coupling part 111 may be formed on one side of the main housing 110 and the power transmission unit 400 coupled to the polishing unit 300 may be accommodated in the power transmission unit accommodating part 113. It is formed adjacent to the power transmission receiving portion 113 so that.

The driving unit coupling part 112 is formed in the body housing 110 to form a right angle with the polishing unit coupling part 111. The driving unit coupling part 111 may be formed such that the power transmission unit 400 coupled with the driving unit 200 may be accommodated in the power transmission unit accommodating part 113.

The power transmission unit accommodating part 113 is a space formed by being processed or integrally formed on one side of the main body housing 110. The power transmission unit accommodating part 113 may be coupled to one side such that the power transmission unit 400 coupled to the polishing unit 300 and the power transmission unit 400 coupled to the driving unit 200 are coupled to each other. It is formed to be connected.

For example, the internal space of the power transmission unit accommodating portion 113 may be formed in the T-shape. The power transmission unit accommodating part 113 may be cast by a mold. Alternatively, the power transmission unit accommodating part 113 may be formed by being processed by a machine tool such as a lathe or milling.

Meanwhile, a handle coupling member 114 and a guide unit coupling hole 115 may be formed at one side of the main body housing 110.

The handle coupling member 114 may be formed on an upper portion of the body housing 110. Coupling means may be formed on one surface of the handle coupling member 114 to be coupled to the handle 130. For example, a hole may be formed through which the bolt can be inserted so as to be coupled to the handle by the bolt and the nut.

The guide unit coupling hole 115 is formed at the rear of the main body housing 110, and the guide unit 500 may be rotatably coupled to the main body unit 100. The guide unit coupling hole 115 may be formed at least one portion that is coupled to the guide unit coupling hole 115 according to the structure of the guide unit 500.

The traveling wheel 120 is composed of a pair of wheels, coupled to the lower portion of the main body unit 100 so as to move the main body unit 110 through rotation. The driving wheel 120 may be provided with a bearing (not shown) to facilitate the rotation.

The handle 130 is formed to facilitate the operator to polish the plate (P) by moving the surface polishing apparatus (1000). One side of the handle 130 is coupled to the handle coupling member 114 formed in the body housing 110. For example, the handle coupling member 114 and the handle 130 is coupled and fixed by the bolt and nut. The handle 130 has a predetermined length so that the worker can work in a state that the operator does not bend the waist, and the handle 130 is preferably formed on the upper portion of the handle 130 so that the worker can grip with two hands.

The driving unit seating member 140 is provided on one side of the body housing 110. For example, the driving unit seating member 140 is formed adjacent to the driving unit coupling part 112. The driving unit seating member 140 may be formed in a plate shape so that the driving unit 200 may be seated, and a hole may be formed at one side to be fastened by the driving unit 200 and the bolt and the nut. have.

As such, the drive unit may be directly coupled to the main body housing, thereby reducing the surface polishing apparatus and thus reducing manufacturing cost.

The support member 150 may be coupled to a lower portion of the driving unit seating member 140. The support member 150 has a predetermined height and a lower portion thereof is formed horizontally so that the surface polishing apparatus 1000 is erected and fixed.

The driving unit 200 generates power to drive the polishing unit 300 and mainly converts electrical energy into rotational energy. The drive unit 200 is a motor 210 for generating power, a drive unit fixing cover 220 coupled with the body unit 100, a lower fixing member 230 for fixing the lower portion of the drive unit 200 It includes.

The motor 210 converts electrical energy into rotational energy. The motor 210 is provided with a motor shaft 211 on one side to rotate the power generated. The motor shaft 211 is coupled to the power transmission unit 400.

The drive unit fixing cover 220 is coupled to one side of the motor 210 and the other side is fastened to the drive unit coupling portion 112 formed in the body housing 110 to fix the drive unit 200. Play a role. For example, the driving unit fixing cover 220 and the driving unit coupling part 112 may be fastened by bolts and nuts.

The lower fixing member 230 is provided in the form of a plate on the lower portion of the motor 210. The lower fixing member 230 is coupled to the driving unit seating member 140. For example, the lower fixing member 230 and the driving unit seating member 140 may be fastened by bolts and nuts.

The driving unit 200 generates a high rotational power and transfers a lot of load and vibration to the fixtures for fixing the driving unit 200 in a power transmission process. Therefore, the driving unit fixing cover 220 and the lower fixing member 230 is provided to improve the fixing force to prepare for any damage that may occur.

The polishing unit 300 receives the rotational power generated by the driving unit 200 through the power transmission unit 400 to polish the surface of the plate (P).

The polishing unit 300 is an abrasive 310 for polishing the surface of the plate material (P), the abrasive 310 to prevent the foreign substances that are generated when the abrasive 310 is polishing the surface of the plate (P) to protrude An abrasive cover 320 covering a portion of the abrasive, an abrasive fixing member 330 for fixing the abrasive 310, an impeller 340 for discharging foreign matters accumulated in the abrasive cover 320 to the outside, the polishing unit 300 ) Is a polishing unit fixing cover 350 for fastening to one side of the body housing (110).

A central portion of the abrasive 310 may be formed through a hole (not shown) so as to penetrate through the power transmission unit 400. The abrasive 310 may be formed in a cylindrical disk shape, it is coupled to the main body unit 100 so that the outer peripheral surface of the cylindrical is horizontal with the plate (P). The abrasive 310 may be made by mixing small abrasive grains with an adhesive material and then molding them into a cylindrical shape.

The abrasive cover 320 prevents the stone powder, iron powder, etc., generated when the abrasive 310 polishes the surface, from being protruded to the outside by the rotational force.

The abrasive cover 320 includes a first cover 321 having one side coupled to the main body unit 100 and a second cover 322 having one side coupled to the first cover 321.

The first cover 321 is formed to cover a portion with a predetermined interval so as not to contact the cylindrical abrasive (310). Part of the first cover 321 is preferably open so that the portion where the abrasive 321 polishes the plate (P) is not blocked. One side of the first cover 321 is fastened and fixed to one side of the body unit 100.

The second cover 322 is coupled to surround the outside of the first cover 321. The second cover 322 is a means to facilitate replacement when the abrasive 310 is worn and replaced. For example, when the abrasive 310 is worn out and needs to be replaced, only the second cover coupled to the outside of the first cover is removed without the need to separate the first cover coupled to the main body unit. Can be replaced.

The abrasive fixing member 330 allows the abrasive 310 to be coupled to one side of the power transmission unit 400. For example, the abrasive holding member 330 may be made of a bolt or nut.

The abrasive fixing member 330 may further include a pressing member 331 on both sides of the abrasive to improve the force in close contact with the abrasive 310 and fixed.

The pressing member 331 is provided to contact both sides of the abrasive 310 in the form of a circular disk. The pressing member 331 is formed to widen the contact area between the abrasive and 310 to reduce the impact generated when the abrasive 310 polishes the plate (P).

The impeller 340 is located between the abrasive 310 and the abrasive cover 320, it is coupled to the power transmission unit 400 through. Blades are formed on the outside of the impeller 340 to generate wind power when rotated. The impeller 340 penetrates and couples with one side of the power transmission unit 400, and generates wind power by the rotational force generated by the power transmission unit 400.

One side of the polishing unit fixing cover 350 is coupled to the polishing unit 300 and the other side fixes the polishing unit 300 to the polishing unit coupling part 111 located at one side of the main housing 110. For example, the polishing unit fixing cover 350 and the polishing unit coupling portion 111 may be fastened with bolts and nuts.

The power transmission unit 400 is the first power transmission member 410 is coupled to one side of the drive unit 200 to transfer the power generated in the drive unit 200, one side is coupled to the polishing unit 300 A second power transmission member 430 coupled to the main shaft 420 and the main shaft 420 to provide power to the polishing unit 300 through the first power transmission member 410. It includes.

The first power transmission member 410 has a through hole formed in a central portion thereof. The through hole is coupled to a motor shaft and a key (not shown) provided in the drive unit 200.

The first power transmission member 410 is coupled to the driving unit 200 and then fixed to be located inside the power transmission unit accommodating part 113 formed at one side of the main housing 110. The first power transmission member 410 is made of a bevel gear.

The main shaft 420 is formed in a round bar shape having a constant length. The main shaft 420 is coupled to the polishing unit 300.

Looking at the process of coupling the main shaft 420 and the polishing unit 300, the polishing unit fixing cover 350 is first penetrated through the main shaft 420. In this case, the polishing unit fixing cover 350 is coupled so that the main shaft 420 is not affected even when the main shaft 420 rotates. Then, the abrasive cover 320 is fastened to one surface of the polishing unit fixing cover 350. Thereafter, the impeller 340 is penetrated and coupled to rotate together with the main shaft 420. Then, the pressing member 331 is coupled to both sides of the abrasive 310, respectively, and then penetrated through the main shaft 420. Finally, the abrasive fixing member 330 fixes the abrasive 310 and the pressing member 331 in close contact.

On the other hand, if the main shaft 420 is inserted through the power transmission unit accommodating portion 113 formed in the main housing 110, the main shaft 420 smoothly on the opposite side of the polishing unit coupling portion 111. The bearing B and the main shaft fixing cover 421 may be formed to be rotated. The bearing B is fitted to the end of the main shaft 421 is coupled. The bearing (B) may be used a variety of bearings, for example, pin bearings, ball bearings. The main shaft fixing cover 421 is coupled to the body housing 110 to prevent the main shaft 420 coupled with the bearing B from being exposed to the outside.

Due to this structure, when the polishing unit fixing cover 350 and the main shaft fixing cover 421 coupled to both side surfaces of the main body housing 110 are removed, the components combined with the polishing unit 300 are polished to the surface. Since it can be separated from the apparatus 1000, the polishing unit 300 or other parts may have a problem, and thus may be easily worked when replacement or repair is required.

The second power transmission member 430 penetrates and engages with the main shaft 420, and part of the second power transmission member 430 is formed of a bevel gear. The second power transmission member 430 is fastened to engage with the bevel gear formed on the first power transmission member 410.

Alternatively, the bevel gears formed on the first power transmission member 410 and the second power transmission member 430 may be formed of spiral bevel gears.

When the coupling process is completed, the polishing unit 300 is coupled to one side of the main shaft 420, and the second power transmission member 430 is easily coupled to the bevel gear formed on the first power transmission member 410. It is penetrated and fixed at one position. In this state, the main shaft 420 is coupled to the power transmission unit accommodating part 113, and then the polishing unit fixing cover 350 is fastened to the polishing unit coupling part 111.

Through the above process, the bevel gear formed on one side of the first power transmission member 410 and the bevel gear formed on one side of the second power transmission member 430 are inside the power transmission unit accommodating part 113. Coupled to engage with each other in such a fastening structure can transmit the rotational force generated in the drive unit 200 to the polishing unit 300.

The guide unit 500 is coupled to the rear surface of the body unit 100 so that the polishing unit 300 can be stably polished without shaking when polishing the plate (P).

The guide unit has a pair of auxiliary wheels 511 to help the surface polishing apparatus 1000 travel, a guide body 512 rotatably coupled to the auxiliary wheel 511, and the guide body 512. A first coupling member 513 rotatably coupled to the main body unit 100, a second coupling member 515 rotatably coupled to an upper portion of the guide body 512, and the first coupling member 513. 2 is coupled to the guide member 515 rotatably coupled with the guide body 512, the protruding member 514 provided on the upper portion of the guide body 512, the one side and the second coupling member 515 is through Sliding member 516, the third coupling member 517 is coupled to one side of the sliding member 516 and rotatably coupled to the body unit 100, the second coupling member 515 and the third coupling member 517 between the second coupling member 515 and the third coupling portion by an elastic force. Pushing the one face of (517) includes a resilient member 518.

The auxiliary wheel 511 is hinged to the guide body 512 formed at the rear end of the auxiliary driving part 510. The auxiliary wheel 511 is composed of a pair of wheels. A bearing may be formed inside the auxiliary wheel 511 to facilitate rotation.

The guide body 512 is formed with a through hole on one side in order to hinge the auxiliary wheel 511. The guide body is preferably formed to withstand the distortion generated when the polishing unit polishes the surface of the plate material.

The first coupling member 513 is formed on the opposite side of the guide body to which the auxiliary wheel is coupled. The first coupling member 513 is hinged to be rotatable with the guide unit coupling hole 130 formed at the rear end of the body housing 110.

The protruding member 514 is formed on an upper portion of the guide body 512 and hinged to be rotatable with the second coupling member 515. The protruding member 514 may be coupled to the guide body 512 by welding. The protruding member 514 is formed with a through hole to be hinged to the second coupling member 515. The protruding member 514 may be formed to abut on both sides of the second coupling member 515 so as to prevent the second coupling member 515 from being separated.

The second coupling member 515 is hinged to the protrusion member 514. The second coupling member 515 has a through hole formed at one side thereof and is formed to reciprocate with the sliding member 516.

The sliding member 516 includes a shaft 516a sliding and linearly moving, and a cylinder 516b for accommodating the shaft 516a therein.

The shaft 516a has a rod-shaped rod shape. One side of the shaft 516a is coupled through the second coupling member 515 and the other side is accommodated in the cylinder 516b to form a reciprocating motion.

The cylinder 516b has a hole formed therein so that the shaft 516a can be accommodated therein. The opposite side of the side where the cylinder 516b and the shaft 516a are coupled to slide is coupled to the third coupling member 517.

Lubricating oil may be applied to the shaft 516a to reduce friction therein for smooth reciprocation with the cylinder 516b.

The third coupling member is coupled to one side of the cylinder and the other side is hinged to the guide unit coupling hole 130.

The elastic member 518 is provided to accommodate the cylinder 516a and the shaft 516b therein, and is located between the second coupling member 515 and the third coupling member 517. The elastic member 518 may be formed of a spring.

<Example 2>

On the other hand, Figure 5 is a front view showing a handle of the surface polishing apparatus according to another embodiment.

The surface polishing apparatus according to the present embodiment is the first described above except for the height adjusting member 131 and the height fixing member 410 including the first height adjusting member 131a and the second height adjusting member 131a. Since it is substantially the same as the surface polishing apparatus 1000 according to the embodiment, overlapping description is omitted, and the surface polishing apparatus 1000 includes a first height adjusting member 131a and a second height adjusting member 131a. The same reference numerals are used for the other components except for the height adjusting member 131 and the height fixing member 410.

Referring to FIG. 5, the handle 130 has a height fixing member 131 that can adjust the height by sliding, and a height fixing part for fixing the handle 130 whose height is adjusted by the height adjusting member 131. It may be made of ash 132.

The height adjusting member 131 is a first side fixed to the main body unit 100 and the first coupling through the first height adjustment member 131a and the first height adjustment member 131a is formed to form a hole therein It includes two height adjusting member (131b).

The first height adjustment member 131a is fixed to one end of the fixing plate to be coupled to the handle coupling member 114 formed in the body unit 100 by a rod-shaped body in which a hole is formed therein. Can be.

The second height adjusting member 131b has a handle formed at an upper portion thereof so that an operator can grip it, and a circular rod that can be slidably coupled to a hole formed in the first height adjusting member 131a is extended.

The height fixing member 132 is formed between the first height adjusting member 131a and the second height adjusting member 131b to fix the handle 130 to a position set by an operator. For example, an inclined surface is formed on one side of the inner surface of the height fixing member 132 and the other side is coupled to the first height adjusting member 131a by a screw thread. When the height fixing member 132 is rotated to be tightened to one side in such a structure, an inclined surface formed on one side of the height fixing member 132 presses one side of the first height adjusting member 131a and the first height adjusting member. A part of 131a is deformed to be tightened inward and is fixed in close contact with the second height adjusting member 131b. Of course, the first height adjusting member 131a may be formed by cutting one side to be deformable by the height fixing member 132.

Alternatively, the height adjustment member 131, although not shown, holes are formed at regular intervals, and the height fixing member 132 is made of a pin (not shown) to be fitted and fixed in the hole. Or it may be formed of a protrusion (not shown) having an elastic force. Of course, the height adjustment member 131 has a locking step (not shown) formed at a predetermined interval for this purpose.

6, 7 and 8 are side views showing an operating state of the surface polishing apparatus of the present invention.

6, 7, and 8 to look at the operating state of the surface polishing apparatus.

FIG. 6 is a view in which the surface polishing apparatus 1000 is supported by the support member 150 to stand. At this time, the weight distribution of the surface polishing apparatus 1000 has a greater load on the driving unit 200 side based on the reference axis (A). As described above, the guide unit 500 and the polishing unit 300 are lifted upward and fixed in a situation where the surface polishing apparatus 1000 is erected.

7 is a view in which the surface polishing apparatus 1000 is inclined toward the polishing unit 300 based on the reference axis A. Referring to FIG. At this time, the weight distribution of the surface polishing apparatus 1000 is biased toward the polishing unit 300 based on the reference axis (A). In such a situation, even if the worker releases the handle 130, the surface polishing apparatus 1000 does not return to a standing state as shown in FIG. 5.

On the other hand, the auxiliary wheel 511 coupled to the auxiliary running portion 510 of the guide unit 500 is the grinding unit 300 by the repulsive force by the elastic force provided by the elastic member 518 plate (P) The surface polishing apparatus 1000 is supported so as not to contact the surface polishing apparatus 1000.

8 is a diagram in which the surface polishing apparatus 1000 polishes the surface of the plate material P. As shown in FIG. In the state of Figure 7, the operator decides the part to be polished plate (P), grasp the handle with both hands and then press down. If the work continues, the abrasive 310 wears down and becomes smaller and smaller, and accordingly, the operator can adjust the amount of polishing by further pushing the handle 130 downward.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

1000: surface polishing apparatus 100: body unit
110: body housing 120: driving wheel
140: drive unit seating member 200: drive unit
210: motor 220: drive unit fixing cover
230: lower fixing member 300: power transmission unit
310: first power transmission member 320: main shaft
330: second power transmission member 400: polishing unit
410: abrasive 420: abrasive cover
430: abrasive fixing member 440: impeller
450: polishing unit fixing cover 500: guide unit
511: auxiliary wheel 512: guide body
513: first coupling member 514: protruding member
515: second coupling member 516: sliding member
517: third coupling member 518: elastic member

Claims (6)

Main unit;
A driving unit coupled to the main unit to generate power;
A polishing unit coupled to the main unit to polish the surface of the plate using a rotational force;
A power transmission unit coupled to the main unit to transfer power generated by the driving unit to the polishing unit; And
It is coupled to the rear side of the main body unit and prevents the distortion generated in the main body unit by the rotational force of the polishing unit during the polishing of the surface of the plate, the main body unit rotates with respect to one side to adjust the height of the polishing unit Surface polishing apparatus comprising a guide unit for supporting the body unit by the repulsive force. The method of claim 1, wherein the main body unit,
A body housing accommodating the power transmission unit therein and having one side coupled to the polishing unit and the other side coupled to the drive unit;
A pair of driving wheels for supporting the body housing; And
Surface polishing apparatus comprising a handle provided on one side of the body housing The method of claim 1, wherein the polishing unit,
An abrasive having one side vertically coupled with the power transmission unit and having a cylindrical outer circumference friction with the surface of the plate;
An abrasive cover not exposing a portion of the abrasive; And
And an impeller for generating wind power by the rotational force generated by the power transmission unit to remove foreign matters accumulated in the abrasive cover. The method of claim 1, wherein the power transmission unit,
A first power transmission member coupled to one side of the drive unit to transfer power generated from the drive unit;
A main shaft having one side coupled to the polishing unit; And
And a second power transmission member penetratingly coupled with the main shaft and providing power to the polishing unit transmitted through the first power transmission member. The method of claim 1, wherein the guide unit,
A pair of auxiliary wheels;
A guide body having one side rotatably coupled with the auxiliary wheel;
A first coupling member provided at one side of the guide body and rotatably coupled to the main body unit;
A second coupling member rotatably coupled to an upper portion of the guide body;
A sliding member having one side coupled to the second coupling member;
A third coupling member coupled to one side of the sliding member and rotatably coupled to the main body unit; And
And an elastic member provided between the second coupling member and the third coupling member to push one surface of the second coupling member and the third coupling member by an elastic force. The method of claim 2, wherein the handle,
A height adjusting member having one side fixed to the main body unit and including a first height adjusting member having a hole formed therein and a second height adjusting member penetratingly coupled with the first height adjusting member; And
Surface polishing apparatus further comprises a height fixing member provided between the first height adjusting member and the second height adjusting member for fixing the second height adjusting member.

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