KR20160131690A

KR20160131690A - A grinding apparatus

Info

Publication number: KR20160131690A
Application number: KR1020150064628A
Authority: KR
Inventors: 박순욱; 이상헌
Original assignee: 삼성중공업 주식회사
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2016-11-16
Also published as: KR101722247B1

Abstract

There is provided a polishing apparatus in which the inclination with respect to the surface to be polished is adjusted. The grinding apparatus includes a main frame, a wheel assembly rotatably supporting the main frame, a grinding unit connected to the main frame so as to be rotatable about the first axis, and a tilt adjustment unit for restricting rotation of the main frame and the grinding unit about the first axis .

Description

[0001] The present invention relates to a grinding apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus, and more particularly, to a polishing apparatus for removing dust, stains, rust, and the like on the surface of a deck or tank of a ship.

In general, when the ship is dried and repaired, the paint is finally applied after polishing the deck having a large area. In particular, as the pre-treatment of the final painting, the polishing work is largely hand- to be.

As a grinding machine for polishing a deck or the like, an abrasive such as a grinding stone or a brush is usually combined with a hand grinder.

Korean Published Patent Application No. 10-2013-0012995

However, the above method requires the operator to sit and work for a long period of time, and the operator is exposed to the dust generated during polishing, thereby causing difficulty in the work of the operator.

In addition, since the ship's deck is made of an iron plate, the abrasive material is easily broken when the above-described equipment is applied, and the polishing process is very difficult when the surface to be polished is not flat such as bent or curved iron plate.

Further, in the case of performing polishing as a pretreatment work for coating an iron plate, the polishing operation may be smooth in the case of a coating film having a low hardness or hardly proceeding hardening, but a long time after coating, If the required polishing performance or frictional force is not provided at the time of polishing the high coat film, a large amount of time may be required for the polishing operation.

Thus, attempts have been made to increase the polishing performance such as weighting the polishing apparatus itself or adding a weight, but in this case, the weight of the polishing apparatus is increased and it is inconvenient to handle the equipment of the worker . Further, when higher polishing performance or frictional force is required depending on the degree of hardening of the coating film, heavier polishing equipment or weight may be required, and the worker's inconvenience may be increased in such replacement work.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a polishing apparatus that can perform a smoothing operation on a deck or the like of a ship more conveniently and efficiently, thereby improving productivity and economy.

Another problem to be solved by the present invention is to provide a polishing apparatus capable of varying the polishing force or the frictional force according to the hardness of the object to be polished or the polishing performance required for polishing.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a polishing apparatus comprising: a main frame; A wheel assembly rotatably supporting the main frame; A polishing unit rotatably connected to the main frame about a first axis; And a tilt adjusting unit that limits rotation of the main frame and the polishing unit about the first axis.

In addition, the main frame may include a supporting portion coupled to the wheel assembly at one side and two connecting bars extending in parallel from the other side of the supporting portion, and the polishing portion may be formed by a pivot shaft passing through the two connecting bars, And is rotatably connected to the main frame around one axis.

Further, the wheel assembly includes two wheels, and is supported at three points on the surface to be polished by the two wheels and the polishing unit.

The abrasive portion may include an abrasive member for abrading a surface to be polished. The abrasive portion may include a contact surface where the abrasive surface and the abrasive surface are in contact with each other in accordance with an angle of rotation between the abrasive portion and the main frame, Is adjusted.

The polishing apparatus may further include a driving unit fixedly attached to the polishing unit and providing a driving force to the polishing unit. The inclination adjusting unit may include a C-shaped supporting member disposed on the two connecting bars, An annular ring and a wing bolt for adjusting the distance between the first annular ring and the C-shaped support.

The C-shaped support rods are fixed to two connection bars of the main frame through a fixing portion and are provided with two parallel extensions extending beyond the free ends of the two connection bars and two parallel extension portions extending between the two parallel extension portions, And the bridge portion includes a penetration portion passing through the bridge portion at the center, and the wing bolt passes from the outside of the C-shaped support to the first annular ring through the penetration portion.

According to another aspect of the present invention, there is provided a polishing apparatus, further comprising a driving unit fixedly mounted on the polishing unit and providing a driving force to the polishing unit, wherein the main frame has an extension extending from the one side of the main frame, A first extension rod connected to the second annular ring and extending through the extension bar, and a second extension rod connected to the second annular ring and extending through the extension bar, And a first rotary knob fixed to the other end of the first extension rod.

The first elongated rod is connected to the second annular ring in a threaded manner, and the first elongate rod rotates along the rotation of the first elongate rod fixed to the other end of the first elongate rod, The distance between the second annular ring and the extension bar is adjusted by rotating about the directional axis.

According to another aspect of the present invention, there is provided a grinding apparatus according to another aspect of the present invention, wherein the inclination adjusting portion includes a second extending rod extending from an upper portion of the main frame to a cover of the polishing portion, And a second rotary knob fixed to the second extension rod at one end of the rod, and the other end of the second extension rod is in contact with the cover of the abrasive portion.

The second extending rod is screwed to the supporting portion and the length of the second extending rod and the cover from the supporting portion to the cover of the polishing portion is adjusted in accordance with rotation of the second rotating handle fixed to one end of the extending portion.

Other specific details of the invention are included in the detailed description and drawings.

1 is a side view of a polishing apparatus according to an embodiment of the present invention.
FIG. 2 is a top view of a polishing apparatus according to an embodiment of the present invention shown in FIG. 1. FIG.
3 is an enlarged view showing the "A" region of FIG. 1 in an enlarged scale.
4 is an enlarged cross-sectional view showing an enlarged cross section of a part of the polishing part and the driving part.
FIG. 5 is an enlarged view showing a region "B" in FIG. 1 for increasing the inclination of the polishing unit with respect to the main frame in the polishing apparatus according to the embodiment of the present invention shown in FIG.
FIG. 6 is an enlarged view showing a region "B" in FIG. 1 for reducing the inclination of the polishing unit with respect to the main frame in the polishing apparatus according to the embodiment of the present invention shown in FIG.
7 is a side view of a polishing apparatus according to another embodiment of the present invention.
8 is a top view of the polishing apparatus according to another embodiment of the present invention shown in FIG.
9 is a side view of a polishing apparatus according to another embodiment of the present invention.
10 is a top view of a polishing apparatus according to another embodiment of the present invention shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other elements, steps and / or operations in addition to the stated elements, steps and / use. And "and / or" include each and any combination of one or more of the mentioned items.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a side view of a polishing apparatus according to an embodiment of the present invention.

FIG. 2 is a top view of a polishing apparatus according to an embodiment of the present invention shown in FIG. 1. FIG.

1 and 2, a polishing apparatus 1 according to an embodiment of the present invention includes a main frame 100, a wheel assembly 200, a driving unit 300, a polishing unit 400, (500).

The main frame 100 may function as a main body of the polishing apparatus 1 on which the wheel assembly 200, the driving unit 300, and the polishing unit 400 are mounted. A work handle 110 installed at a predetermined height is connected to the main frame 100 so that an operator can hold the grinding apparatus 1 and perform a polishing operation in a line state.

The height of the work handle 110 may be set to a height at which the worker can work with the waist in a flat state, or the height of the work handle 110 may be arbitrarily adjusted according to the height of the worker. Therefore, the polishing apparatus 1 of the present invention can operate the apparatus in a standing state with ease, so that the worker is less fatigued even when the apparatus is operated for a long period of time. As shown in FIG. 2, the work handle 110 may have a bar shape so that the worker can hold the work handle 110 with both hands.

An operation button 120 for applying power and operation of the polishing apparatus 1 may be mounted on the extension bar 130 connecting the work handle 110 and the main frame 100. However, the present invention is not limited to this, and the position of the operation button 120 may be arranged at another position for the convenience of the worker. For example, the operation button 120 may be disposed on one side or both sides of the handle 110 have.

The main frame 100 includes an extension bar 130 connected to the work handle 110 and disposed on an upper portion of a wheel assembly 200 to be described later and a support portion 140 rotatably supporting the wheel assembly 200 And a pair of connection bars 150 and 160 disposed on the upper part of the polishing part 400 to be described later. The work handle 110, the extension bar 130, the support portion 140 and the connection bars 150 and 160 of the main frame 100 may be separately manufactured and joined together by welding or the like, It can also be made.

The support portion 140 is coupled to the wheel assembly 200 at one side and the two connection bars 150 and 160 extend parallel to the other side of the support portion 140.

As shown in FIGS. 1 and 2, the extension bar 130 may have a bar shape that is bent in a combination of a vertically arranged portion and a horizontally arranged portion. A work handle 110 may be formed on one side of the extension bar 130 and the other side of the extension bar 130 may be coupled with the support 140.

The support portion 140 may be in the form of a plate disposed generally parallel to the ground and may have an appropriate size to allow the wheel assembly 200 to be pivotally coupled to one side. One side of the support part 140 may be connected to the extension bar 130 and the connection bars 150 and 160 may extend to the other side of the support part 140.

As shown in FIG. 2, the connection bars 150 and 160 may be spaced apart from each other at both ends of the support 140. For example, the connection bars 150 and 160 may be formed in parallel along the X-axis direction. The pair of connecting bars 150 and 160 may be hinged to the polishing unit 400 to be described later to be rotatable. For this, the cover 410 of the polishing unit 400 may be formed with a hinge part hinged to the connecting bars 150 and 160.

Referring now to Figure 3, the wheel assembly 200 of the "A" region of Figure 1 will be described in more detail.

3 is an enlarged view showing the "A" region of FIG. 1 in an enlarged scale.

Referring to FIG. 3, the wheel assembly 200 includes first wheels 220 and 230 rotating while contacting the surface to be polished 5, and first and second wheels 220 and 230, (Not shown).

// Please include the reference number "230" in the drawing //

Here, the surface to be polished 5 is a surface made of a steel plate such as a deck, tank or the like of a ship, and it may be used as a general meaning including a flat surface or a surface with some unevenness, .

The wheel assembly 200 allows the polishing apparatus 1 to move along the surface 5 to be polished while the main frame 100 is rotatably supported on the surface 5 to be polished. The first wheels 220 and 230 included in the wheel assembly 200 may be in the form of a single roll in contact with the surface 5 to be polished and may be formed in a plurality of tires. For example, as shown in FIG. 1 and FIG. 2, the first wheels 220 and 230 may be provided at both ends of the coupling beam 210 so as to be spaced apart from each other.

The driving unit 300 is mounted and fixed to the polishing unit 400 and the polishing unit 400 can be connected to the main frame 100 so as to be rotatable and to polish the surface 5 to be polished . The rotation between the polishing unit 400 and the main frame 100 may be limited by the inclination adjusting unit 500 and the inclination angle between the polishing unit 400 and the main frame 100 may be limited by the inclination adjusting unit 500 ). &Lt; / RTI >

Here, the driving unit 300 may include a driving motor (not shown) to provide a driving force to the polishing unit 400. The driving unit 300 and the polishing unit 400 may be integrally combined. For example, the driving unit 300 may be mounted on the polishing unit 400.

The pivotable connection between the polishing section 400 and the main frame 100 is such that the polishing section 400 is positioned between the pair of connecting bars 150 and 160 of the main frame 100 and the hinge . More specifically, at least a portion of the cover 410 of the polishing portion 400 can be positioned between the connecting bars 150, 160 of the main frame 100 and the vicinity of the free ends of the connecting bars 150, The polishing unit 400 can be hinged to the main frame by the pivot shaft 600 passing therethrough.

The pivot shaft 600 may be provided in a pair so as to connect each of the pair of connection bars 150 and 160 with the polishing unit 400. In addition, the hinge unit may be formed on the polishing unit 400 so as to be hinged to the connection bars 150 and 160.

4 is an enlarged cross-sectional view showing an enlarged cross section of a part of the polishing part and the driving part.

4, the polishing unit 400 may include a cover 410, a rotating shaft 420, a bracket 430, a polishing member 440, and a separation preventing unit 450.

The cover 410 supports the above-described driving unit 300 and may have a space portion 405 therein. A rotating shaft 420, a bracket 430, an abrasive member 440, and the like may be mounted on the space portion 405. The space portion 405 may serve to move foreign substances such as dust, dust, rust, etc., generated from the object surface 5 to be polished during a polishing operation to a dust collector (not shown) A moving passage 480 may be formed. Therefore, it is possible to protect the operator from dust, rust, and other foreign materials generated during the polishing operation, thereby enabling the operator to carry out the polishing operation in a pleasant and safe environment.

The dust collector moving passage 480 is connected to the dust collector through a vacuum hose or the like, and the dust collector may be provided with a filter or a cyclone to collect foreign substances.

The rotating shaft 420 can be rotated by the driving unit 300 inside the cover 410. That is, the rotating shaft 420 may be connected to the driving unit 300, and may be directly connected to the driving unit 300 or may be connected by various couplings (not shown). The rotating shaft 420 may be configured as a rotating shaft assembly including a bearing that supports a spindle or spindle.

The bracket 430 can rotate inside the cover 410 while being coupled with the rotation shaft 420. The bracket 430 may have a disk-like plate shape, and the polishing member 440 performing the polishing operation may be configured in a module form. That is, the bracket 430 can be detachably coupled with the cover 410 through the bolt 460 and the washer 470, so that when the abrasive member 440 is worn, replacement with a new product can be facilitated.

The polishing member 440 is coupled to the bracket 430 and rotates inside the cover 410 to polish the surface 5 to be polished. As described above, the abrasive member 440 can constitute a replaceable module together with the bracket 430.

The abrasive member 440 includes an elastic blade 441 curved toward the surface 5 to be polished, an abrasive 443 coupled to the elastic blade 441 and in contact with the surface 5 to be polished, And a thin steel plate 445 coupled to the unbonded elastic blade 441.

The elastic wings 441 may be formed of a plurality of elastic wings. For example, the elastic wings 441 may comprise a rubber material having an appropriate elastic force. Therefore, since the elastic blade 441 has a curved shape with elasticity, the surface area with the surface 5 to be polished can be widened during the polishing operation, and even if the surface 5 to be polished is not flat, So that the polishing efficiency can be increased as a whole.

The abrasive 443 coupled to the elastic blade 441 can prevent the abrasive member 440 from being worn in friction with the abrasive surface 5 made of an iron plate, thereby prolonging the service life and enhancing the polishing efficiency. In this embodiment, the abrasive 443 may be formed of a high-hardness diamond material, but is not limited thereto.

The release preventing portion 450 may be configured to enclose the abrading member 440 inside the cover 410 to prevent the abrading member 440 from being detached outward. For example, the release preventing portion 450 may include a coupling ring that surrounds an edge region of the bracket 430. An abrasive 453 may be coupled to the coupling ring so as to perform polishing of the surface 5 to be polished together with the polishing member 440.

In the illustrated embodiment, the surface to be polished 5 is polished by an abrasive member 440 of an elastic blade 441 type and an annular abrasive 453.

However, the present invention is not limited to this, and the shape of the member for polishing the surface to be polished 5 according to the present invention may be a circular plate type abrasive or the like, and the frictional force with the surface 5 to be polished Any shape member may be employed to polish the surface to be polished 50.

1 and 2, a polishing apparatus according to an embodiment of the present invention includes a polishing unit 400 and a main frame 100. The polishing unit 400 includes a main shaft 100, a first shaft 100, And a slope adjusting unit 500 for limiting the rotation.

In the embodiment shown in Fig. 1, it is exemplified that the polishing apparatus is supported by three points on the surface 5 to be polished, that is, supported by the two first wheels 210 and 220 and the polishing section 400 . When the total weight M of the polishing apparatus is M, the two first wheels 210 and 220 and the three contact surfaces on which the polishing unit 400 contacts the surface to be polished 5, And the point at which the sum of the moments of the three contact surfaces with respect to the total weight M of the polishing apparatus becomes zero becomes the center of gravity of the polishing apparatus. This center of gravity can be predicted to be located inside the triangle formed by the two first wheels 210 and 220 and the polishing unit 400, i.e., near the center of the main frame.

The inclination adjusting unit 500 may limit the rotation of the main frame 100 and the polishing unit 400 so that the polishing unit 400 is maintained at an angle of more than a specific angle with respect to the main frame 100, It can be kept fixed at a certain angle.

The top surface of the main frame 100 and the polishing portion 400 are arranged parallel to the surface 5 to be polished when the tilt adjusting portion 500 does not restrict the tilt with respect to the polishing portion 400. For example, , It can be assumed that the inclination of the polishing unit 400 with respect to the main frame 100 is zero.

The inclination adjusting unit 500 may restrict the rotation about the first axis of the polishing unit 400 with respect to the main frame 100, for example, the turning axis 600, It is possible to adjust the inclination about the pivot axis 600 of the polishing portion 400.

Even if the polishing unit 400 and the driving unit 300 connected thereto are rotated about the rotating shaft 600, the load applied to the main frame 100 through the rotating shaft 600 will not significantly fluctuate. Therefore, even if the inclination of the main frame 100 and the polishing unit 400 is adjusted by the inclination adjusting unit 500, it can be expected that the center of gravity of the entire polishing apparatus 1 will not move greatly. Therefore, even if the inclination of the polishing part 400 with respect to the main frame 100 is adjusted, the load acting on the contact surface where the polishing part 400 and the surface to be polished 5 are in contact with will not greatly vary. However, the area of the contact surface that contacts and supports the polishing part 400 will vary according to the inclination of the polishing part 400, and the load applied per unit area on the contact surface may vary.

That is, the polishing apparatus according to the present invention includes the main frame 100 and the inclination adjusting unit 500 for limiting the inclination of the polishing unit 400, It is possible to control the area of the contact surface with which the contact is made, and the weight or the vertical drag applied per unit area can be adjusted.

The Klon friction force, which expresses the frictional force of a general friction state, can be expressed as a product of the vertical drag and the friction coefficient. Even if the area of the contact surface between the polishing section 400 and the polishing surface 5 varies, there is no significant change in the entire frictional force unless there is a substantial change in the load. However, in the present invention, the inclination adjusting part 500 can adjust or restrict the inclination of the polishing part 400 with respect to the main frame 100, The area of the contact surface of the object surface 5 can be made narrower than in the normal state. Therefore, the frictional force per unit area can be further increased. Therefore, the present invention can provide a sufficient frictional force per unit area to the contact surface, and it is possible to provide the necessary abrasive work Can be performed.

In the polishing apparatus according to an embodiment of the present invention shown in FIGS. 1 and 2, the inclination adjusting unit 500 includes a C-shaped support (not shown) disposed on two opposing connecting bars 150 and 160 of the main frame 100, The first annular ring 530 and the first annular ring 530 surrounding the periphery of the driving unit and the C-shaped supporter 510. In this case,

The C-shaped supports 510 are secured to two connecting bars 150 and 160 of the main frame 100 and include two parallel extensions extending beyond the free ends of the two connecting bars 150 and 160, And a bridge portion connecting two parallel extensions between the extensions, wherein the bridge portion may include a penetration portion 515 passing through the bridge portion at the center. In addition, two parallel extensions of the C-shaped support 510 may be fixed on the two connection bars 150 and 160, respectively, via the fixing portions 512.

The first annular ring 530 surrounds the periphery of the driving portion and the wing bolt 520 is connected to the first annular ring 530 through the penetrating portion 515 from the outside of the C- The distance between the first annular ring 530 and the C-shaped supporter 510 can be adjusted by the first and second annular rings 520 and 520.

That is, the distance between the C-shaped supporter 510 fixed to the main frame 100 and the first annular ring 530 surrounding the driving part 300 fixed to the polishing part 400 is controlled by the butterfly bolt 520 So that the inclination of the polishing part 400 and the main frame 100 can be limited or adjusted.

5 and 6, the adjustment of the inclination of the polishing apparatus according to an embodiment of the present invention and the variation of the contact surface of the polishing unit 400 with respect to the polishing target surface 5 will be described.

FIG. 5 is an enlarged view showing a region "B" in FIG. 1 for increasing the inclination of the polishing unit with respect to the main frame in the polishing apparatus according to the embodiment of the present invention shown in FIG.

FIG. 6 is an enlarged view showing a region "B" in FIG. 1 for reducing the inclination of the polishing unit with respect to the main frame in the polishing apparatus according to the embodiment of the present invention shown in FIG.

5 and 6, the inclination adjusting unit 500 of the polishing apparatus according to an embodiment of the present invention includes a butterfly bolt (not shown) connected to the first annular ring 530 through the C- 520 can be rotated to adjust the rotation or tilt about the first axis of the polishing unit 400 with respect to the main frame 100.

5, when the wing bolt 520 is rotated in the first direction D1, the driving unit 300 and the polishing unit 400 are moved in the second direction D2 relative to the main frame 100 It is possible to rotate the member for polishing the abrasive portion, illustratively, the abrasive 453 in the third direction D3 with respect to the surface 5 to be polished.

The inclination of the main frame 100 and the polishing unit 400 and the driving unit 300 fixed to the main frame 100 can be increased and the abrasive 453 and the polishing The area of the contact surface CS1 in contact with the object surface 5 can be gradually reduced.

The load or the vertical drag acting on the surface 5 to be polished through the contact surface CS1 does not largely change according to the adjustment of the inclination but the area of the contact surface CS1 will gradually decrease as the inclination increases. Accordingly, the load per unit area or the vertical force applied to the contact surface CS1 will gradually increase, and the frictional force per unit area between the contact surface CS1 and the polishing target surface 5 can be increased.

5, by increasing the inclination of the polishing part 400 and the abrasive material 453 with respect to the main frame 100 through the inclination adjusting part 5, the abrasive 453 and the object surface to be polished 5) can be increased. The operator can increase the inclination of the polishing unit 400 with respect to the main frame 100 to increase the desired polishing performance or frictional force Can be achieved.

6, when the butterfly bolt 520 is rotated in the first reverse direction D1 ', the driving unit 300 and the polishing unit 400 move in the second reverse direction D2' relative to the main frame 100, , Which can rotate a member for polishing the abrasive portion, illustratively, the abrasive 453 in the third reverse direction D3 'relative to the surface 5 to be polished.

The inclination of the main frame 100 and the polishing part 400 and the driving part 300 fixed to the main frame 100 can be reduced and the abrasive 453 The area of the contact surface CS2 on which the polishing target surface 5 contacts can be gradually increased.

The load or the vertical drag acting on the surface 5 to be polished through the contact surface CS2 does not largely change according to the adjustment of the inclination but the area of the contact surface CS2 will gradually increase as the inclination increases.

6, by reducing the inclination of the polishing part 400 and the abrasive 453 with respect to the main frame 100 through the inclination adjusting part 5, the abrasive 453 and the object surface to be polished 5 is reduced, but the area of the contact surface CS2 thereof can be increased. 6, the operator reduces the inclination of the polishing unit 400 with respect to the main frame 100 to reduce the contact force of the contact surface CS2 with respect to the main frame 100, The area can be increased and the polishing area per unit time can be increased.

7 is a side view of a polishing apparatus according to another embodiment of the present invention.

8 is a top view of the polishing apparatus according to another embodiment of the present invention shown in FIG.

Hereinafter, with reference to FIGS. 7 and 8, a polishing apparatus according to another embodiment of the present invention will be described focusing on differences from the polishing apparatus according to an embodiment of the present invention shown in FIGS. 1 and 2, Repeated explanations are omitted. In addition, the same reference numerals are used for components substantially the same as those of the embodiment shown in Figs. 1 and 2, and description of the same components is omitted.

Referring to FIGS. 7 and 8, the polishing apparatus according to another embodiment of the present invention differs from the polishing apparatus according to the embodiment in the shape and structure of the tilt adjusting unit 700.

In another embodiment of the present invention, the inclination adjusting portion 700 of another polishing apparatus includes a second annular ring 730 surrounding the driving portion 300, one end connected to the second annular ring 730, And a first rotation handle 710 connected to the other end of the first extension rod 720. The first extension rod 720 may extend from the first extension rod 720 and the first extension rod 720 to the rear of the polishing apparatus.

One end of the first extension rod 720 may be threadedly connected to the second annular ring 730 and the second annular ring 730 may be rotated by rotation about the longitudinal axis of the first extension rod 720. [ And the extension bar 130 can be adjusted.

That is, in accordance with the rotation of the first rotary knob 710 fixed to the other end of the first extension rod 720, the driving unit 300 surrounded by the second annular ring 730 can be pulled or pushed, The rotation or tilt angle about the first axis of the main frame 100 of the polishing unit 400 fixed to the driving unit 300, that is, the turning axis 600 can be adjusted.

9 is a side view of a polishing apparatus according to another embodiment of the present invention.

10 is a top view of a polishing apparatus according to another embodiment of the present invention shown in FIG.

Hereinafter, with reference to FIGS. 9 and 10, a polishing apparatus according to another embodiment of the present invention will be described focusing on differences from the polishing apparatus according to an embodiment of the present invention shown in FIGS. 1 and 2 , The repeated description will be omitted. In addition, the same reference numerals are used for components substantially the same as those of the embodiment shown in Figs. 1 and 2, and description of the same components is omitted.

Referring to FIGS. 9 and 10, the polishing apparatus according to another embodiment of the present invention differs from the polishing apparatus according to the embodiment in the shape and structure of the inclination adjusting unit 800.

The inclination adjusting portion 800 of the polishing apparatus according to another embodiment of the present invention includes a second extending rod 810 and a second extending rod 810 passing through the supporting portion 140 of the main frame 100, And a second rotary knob 820 fixed to the second extension rod 810 at one end of the second extension rod 810.

The second extension bar 810 may extend from the top of the main frame 100 through the support 140 and onto the cover 410 of the polishing part 4000. A second rotary knob 820 may be fixedly connected to one end of the second extension rod 810 and the other end of the second extension rod 820 may contact a portion of the cover 410 of the polishing unit 400 .

The second extension rod 810 passing through the support portion 140 can be screwed to the support portion 140 and the second extension rod 810 passing through the support portion 140 and leading to the cover 410 of the polishing portion 400 810 may be adjusted in accordance with the rotational behavior of the second extension rod 810. In this case,

The other end of the second extension rod 810 pushes a part of the cover 410 of the polishing part 400 in accordance with the rotation of the rotary knob 820 fixed to one end of the second extension rod 810 And the rotation or inclination of the main body 100 of the polishing unit 400 around the pivot shaft 600 can be adjusted.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: a main frame 200: a wheel assembly
300: driving part 400: polishing part
500:

Claims

Mainframe;
A wheel assembly rotatably supporting the main frame;
A polishing unit rotatably connected to the main frame about a first axis; And
And a tilt adjusting section for restricting rotation of the main frame and the polishing section about the first axis.

The method according to claim 1,
Wherein the main frame includes a support portion coupled to the wheel assembly at one side and two connection bars extending in parallel from the other side of the support portion,
And the polishing section is connected to the main frame so as to be rotatable about the first axis by a pivot shaft passing through the two connecting bars.

3. The method of claim 2,
The wheel assembly includes two wheels,
And three points are supported on the surface to be polished by the two wheels and the polishing portion.

The method of claim 3,
Wherein the polishing section includes an abrasive member for abrading a surface to be polished,
Wherein an area of a contact surface where the abrasive member and the object surface to be polished contact is adjusted according to an angle of the rotation of the main frame and the polishing unit limited by the inclination adjusting unit.

3. The method of claim 2,
And a driving unit fixedly mounted on the polishing unit and providing a driving force to the polishing unit,
Wherein the inclination adjusting unit comprises:
A C-shaped support disposed on the two connection bars; a first annular ring surrounding the periphery of the drive; and a wing bolt adjusting the spacing between the first annular ring and the C-shaped support.

6. The method of claim 5,
The C-shaped support is fixed to two connection bars of the main frame via a fixed portion and has two parallel extensions extending beyond the free ends of the two connection bars, and two parallel extensions between the two parallel extensions And a bridge portion
Wherein the bridge portion includes a penetrating portion passing through the bridge portion at a center thereof,
Wherein the wing bolt passes from the outside of the C-shaped support to the through-hole and is connected to the first annular ring.

3. The method of claim 2,
And a driving unit fixedly mounted on the polishing unit and providing a driving force to the polishing unit,
Wherein the main frame includes an extension bar extending from the one side of the main frame and a work handle connected to the extension bar,
Wherein the inclination adjusting unit comprises:
A second annular ring surrounding the drive, a first elongate rod having one end connected to the second annular ring and extending through the elongate bar, and a first rotational handle fixed to the other end of the first elongate rod, Device.

8. The method of claim 7,
One end of the first elongate rod is threadedly connected to the second annular ring,
Wherein the first elongate rod rotates about a longitudinal axis of the first elongate rod in accordance with the rotation of the first elongate rod fixed to the other end of the first elongate rod to adjust the distance between the second annular ring and the elongated bar, Device.

3. The method of claim 2,
Wherein the inclination adjusting unit comprises:
A second extending rod extending from an upper portion of the main frame through a support portion of the main frame to a cover of the polishing portion and a second rotating handle fixed to the second extending rod at one end of the second extending rod,
And the other end of the second extending rod contacts the cover of the polishing portion.

10. The method of claim 9,
Wherein the second extending rod is screwed to the supporting portion and the length from the second extending rod and the supporting portion to the cover of the polishing portion is adjusted in accordance with the rotation of the second rotary knob fixed to one end of the extending portion, .