KR20160061227A - whetstone handling jig - Google Patents

Abstract

The present invention relates to a whetstone handling jig which includes a flange assembling part surrounding and combining the outer surface of a whetstone; a main holder part axially supporting the both left and right end parts of the flange assembling part to make the parts rotatable; and a rotation angle fixing unit rotating the flange assembling part around the rotational axis of the main holder part. The present invention is capable of reducing time for the replacement of a whetstone of a grinder and improving the efficiency of work with the grinder by transferring or replacing the grinder by rotating and then vertically and horizontally fixing the flange assembling part around the rotational axis while the whetstone is assembled. The present invention is capable of preventing accidents in replacement work and musculoskeletal diseases of workers and making the use of manpower excellent with one single person to do the replacement work by performing transferring and replacement work by using a crane while the whetstone is safely fixed to the flange assembling part.

Description

Whetstone handling jig}

The present invention relates to a grindstone handling jig, and more particularly, to a grindstone handling jig that supports both ends of a flange assembly that engages with an outer periphery of a grindstone while being pivotally supported on a main holder portion so as to be rotatable, And the flange assembly is rotated to be horizontally and vertically fixed to perform a transportation or polishing machine replacement work.

Generally, a large grinding machine is used in the field such as large ship manufacturing. At this time, the weight of the grinding wheel mounted on the grinding machine is more than 150KG, so that it is impossible for the worker to replace the workpiece alone, and the worker can perform the transportation and replacement work with one pair of workers.

At this time, the worker must carry out the work by changing the posture such as carrying or setting the grindstone for replacement work from time to time. In this process, there is a problem that the worker is injured by missing the grindstone, , There is a problem that it is difficult to use the damaged grindstone to dispose of the grindstone.

In addition, since the worker carries out all of the work of replacing the grinders manually, there is a risk of the risk of musculoskeletal diseases.

In addition, such a manual method not only depends on the know-how of skilled workers but also provides an excessive amount of work to a practical worker, thereby frequently causing factors that deteriorate productivity as well as productivity.

As a conventional technique for solving such a problem, a jig for heavy-duty tire handling of Korean Patent Laid-Open Publication No. 10-2009-0000263 (published on Jan. 10, 2009) is disclosed.

2 is a perspective view showing a state of holding a tire using a tire handling. The tire handling jig according to the present invention has an output end 1a of the external transfer device 1 A base 10 having an operating cylinder 11 which is coupled to the lower portion 12 and pulls out the rod 12 downward; A plurality of clamps 20, one end of which is coupled to the base 10 by a hinge 9 and the end of the rod 12 is coupled to the predetermined link 15; And grip portions 21 fixed to the other side of the clamps 20 and brought into close contact with the tire 5.

In the air injection work carried out in parallel with the assembling and assembling process of the wheel together with the transportation operation of loading or unloading a large-sized tire as required, the handling work of the tire which is required several times depends on the worker's unreasonable force So that it can be performed easily.

However, although the above-described conventional technique can move a large grinding wheel having a weight of 150 kg or more, it can not be used for mounting or replacing the grinding wheel.

Korean Patent Laid-Open Publication No. 10-2009-0000263 (2009.01.09. Disclosed)

The object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a flange assembly which surrounds the outer periphery of a grindstone, And the flange assembly is rotated to be horizontally and vertically fixed so as to perform a transportation or polishing machine replacement work.

Another object of the present invention is to prevent a safety accident and a musculoskeletal disease of a worker during a replacement work by allowing a crane to move and replace the grinding wheel while safely fixing the grinding wheel to the flange assembly.

It is still another object of the present invention to make it possible to perform a series of replacement operations such as dismantling or assembling a grinding wheel from a grinder by itself.

According to an aspect of the present invention, there is provided a grinding machine comprising: a flange assembly for coupling and engaging an outer periphery of a grindstone; A main holder portion for pivotally supporting left and right side end portions of the flange assembly portion so as to be rotatable; And a rotation angle fixing means for fixing the rotation of the flange assembly about the rotation axis of the main holder unit in a horizontal and vertical state.

The flange assembly may further include: a rotation shaft bracket that is axially coupled to the main holder; A fixing flange extending in one direction around the rotary shaft of the rotary shaft bracket and having a guide groove for surrounding the outer periphery of the grindstone; A variable flange extending in the other direction about the rotary shaft of the rotary shaft bracket to form a guide groove for surrounding the outer periphery of the grinding wheel and being rotatable around a fixed end hinged to the rotary shaft bracket side; And a flange fixing bar connecting the free end portions of the variable flange and restricting movement.

The flange assembly may further include: a rotation shaft bracket that is axially coupled to the main holder; A variable flange extending from both sides of the rotary shaft of the rotary shaft bracket so as to guide the outer periphery of the grindstone and to be rotatable about a fixed end hinged to the rotary shaft bracket; And a flange fixing bar connecting the free end portions of the variable flange and restricting movement.

At this time, the variable flange may have a multi-joint structure.

The main holder part may include a crane ring part for connecting the crane and form an arm part branched to both sides of the crane ring part on both sides of the crane ring part and a fixing shaft bracket opposed to the rotation axis bracket is formed at the end part of the arm part .

The rotation angle fixing means may be formed by arranging a plurality of through holes around the concentric circles of the rotating shaft bracket and the fixed shaft bracket around a concentric circle so that the through holes are penetrated by the fixing pins, .

The present invention is characterized in that both left and right side end portions of a flange assembling portion which surrounds and engage the outer periphery of a grindstone are supported on a main holder portion so as to be rotatable and the flange assembly portion is rotated around a rotation axis in a state where the grindstone is assembled, So that it is possible to shorten the replacement time of the grinding machine grinding wheel and to improve the working efficiency by using the grinding machine.

In addition, the present invention has the effect of preventing a safety accident during a replacement operation and a musculoskeletal disease of a worker by allowing a crane to move and replace the grinding wheel while safely fixing the grinding wheel to the flange assembly.

In addition, since the present invention can perform a series of replacement operations such as disassembling or assembling the grinding wheel from the grinding machine alone, the utilization of the work force is very high.

1 is a perspective view showing a structure of a conventional tire handling jig.
2 is a perspective view showing a state of holding a tire using the tire handling of the prior art.
3 is a front view showing the grindstone handling jig according to the present invention.
4 is a side view showing a grindstone handling jig according to the present invention.
FIG. 5 is a side view showing a state in which the flange portion of the grindstone handling jig according to the present invention shown in FIG. 4 is rotated 90 degrees. FIG.
6 is a front view showing a state in which a grindstone is flange-assembled to a grindstone handling jig according to the present invention;
7 is a side view showing a state in which a grindstone is flange-assembled to a grindstone handling jig according to the present invention.
FIG. 8 is a side view showing a state in which the grindstone of FIG. 7 is rotated 90 degrees in a state where the grindstone is assembled in a flange.
9 to 11 are plan views sequentially showing the process of assembling the grindstone to the grindstone handling jig according to the present invention.
12 is a front view showing an example of storing the grindstone handling jig according to the present invention.
13 is a plan view showing another embodiment of the grindstone handling jig according to the present invention.
14 is a plan view showing still another embodiment of the grindstone handling jig according to the present invention.

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

FIG. 3 is a front view showing the grinding wheel handling jig according to the present invention, FIG. 4 is a side view showing the grinding wheel handling jig according to the present invention, FIG. 5 is a cross- FIG. 6 is a front view of the grindstone handling jig according to the present invention in a state where the grindstone is assembled in a flange, FIG. 7 is a view showing a state in which the grindstone is flanged and assembled to the grindstone handling jig according to the present invention And FIG. 8 is a side view showing a state in which the grindstone of FIG. 7 is rotated by 90 degrees in a state where the grindstone is assembled with the flange.

As shown in the figure, the grinding wheel handling jig according to the present invention comprises a flange assembly 110, a main holder 120, and a rotation angle fixing means 130.

First, a flange assembly 110 that surrounds and bonds the outer periphery of the grindstone 101 is disclosed.

The flange assembly 110 has a pair of rotating shaft brackets 111, which are axially coupled to the main holder unit 120, to face each other.

At this time, a fixing flange 113 and a variable flange 115 are formed on the rotating shaft bracket 111 to surround and grip the outer circumference of the grinding stone 101.

The fixing flange 113 has a semicircular shape so that both ends thereof are coupled to the pair of rotating shaft brackets 111, respectively.

For example, when the rotary shaft of the rotary shaft bracket 111 is the center of rotation, the fixing flange 113 extending in one direction provides an integral structure that surrounds the outer periphery of the grindstone 101 in a "C" shape.

At this time, the end surface of the fixing flange 113 forms a " C "-shaped guide groove 113a so that the grindstone 101 can be guided. A protective pad (not shown) may be provided on the inner side of the guide groove 113a to prevent breakage of the grindstone 101.

The variable flange 115 extends in a state in which the variable flange 115 is rotatable in the other direction about the rotation axis of the rotary shaft bracket 111 and serves to open and close the entrance so that the grindstone 101 entering in the horizontal direction is guided .

The variable flange 115 is formed in an arc shape capable of pivoting about a fixed end portion hinged to the rotating shaft bracket 111 side. At this time, the end face of the variable flange 115 is guided by the grindstone 101 And a protective pad (not shown) for preventing breakage of the grindstone 101 may be provided on the inner side of the guide groove 115a.

The free ends of the variable flange 115 may be connected by a flange fixing bar 117 to restrict movement.

The flange fixing bar 117 may have a length adjustable structure. The flange fixing bar 117 may have a female screw at both ends of the pipe forming the body, and a length adjusting member may be coupled to each female screw to adjust the overall length.

The flange fixing bar 117 may be fixed to the bar hook 118 formed on the variable flange 115 so as to prevent the variable flanges 115 from slipping out. It is possible to reduce or extend the length of the flange fixing bar 117 in parallel.

Next, a main holder part 120 for pivotally supporting both left and right side ends of the flange assembly part 110 is disclosed.

The main holder 120 includes a crane ring 121 for connecting a crane and an arm 123 branched to both sides of the crane ring 121.

At this time, the arm portion 123 is formed to be larger than the maximum diameter of the flange assembly portion 110, so that the flange assembly portion 110 does not interfere with rotation.

At the end of the arm portion 123, a fixing shaft bracket 125 opposed to the rotation axis bracket 111 is formed.

The fixed shaft bracket 125 and the rotary shaft bracket 111 are rotatably coupled to each other so as to be rotatable relative to each other, but are prevented from being separated from each other in the axial direction.

Next, rotation angle fixing means 130 for rotating the flange assembly 110 about the rotation axis of the main holder 120 and fixing the flange assembly 110 in a horizontal and vertical state is disclosed.

The rotation angle fixing means 130 is formed so that a plurality of through holes 131 are formed in a straight line around concentric circles of the rotation axis of the rotation axis bracket 111 and the fixing axis bracket 125, Through the fixing pin 133 to fix the rotation angle.

For example, four through holes 131 may be formed on the concentric circles of the rotating shaft bracket 111 and the fixed shaft bracket 125, and the through holes 131 may be formed to have a phase difference at intervals of 90 degrees, The rotary shaft bracket 111 and the fixed shaft bracket 125 may be rotated at an interval of 90 degrees to fix the position.

The grindstone replacement operation using the grindstone handling jig of the present invention having the above-described configuration will be described.

9 to 11 are plan views sequentially illustrating the process of assembling the grindstone to the grindstone handling jig according to the present invention.

First, the grindstone 101 for replacement work is supplied in a state in which it is pressed in the horizontal direction. And is moved by a crane so that the grinding wheel handling jig is positioned on the upper part of the grindstone 101.

At this time, the flange assembly 110 of the grindstone handling jig is rotated and fixed so as to maintain the same horizontal direction as the grindstone 101.

The height of the crane is lowered so that the flange assembly 110 is horizontal with the grindstone 101 and then the flange assembly 110 is moved horizontally as shown in FIG. So as to enter the flange assembly 110.

10, the operator turns the variable flange 115 close as shown in FIG. 11 and presses the variable flange 115 between the variable flanges 115 And the flange fixing bar 117 is connected so that the grinding stone 101 is not detached.

At this time, the operator can manipulate the flange fixing bar 117 to adjust the clearance between the variable flange 115 and the grindstone 101.

Next, the grinding wheel 101 assembled with the flange is moved to a polishing machine using a crane, and a replacement operation is performed.

FIG. 12 is a front view showing an example of storing the grindstone handling jig according to the present invention. The grindstone handling jig after the grindstone replacement work can be stored on the floor of the workplace. When the variable flange 115 is pivoted outward By making the bottom ground plane wider, it is possible to prevent a conduction accident.

13 is a plan view showing another embodiment of the grindstone handling jig according to the present invention. The grindstone handling jig according to the present invention may have a variable flange 115 formed on both sides of the rotary shaft bracket 111 in both directions .

According to the embodiment as shown in FIG. 13, the diameter of the grindstone 101 that can be replaced can be further varied, and the grinding wheel 101 can be freely moved in the direction in which the flange is assembled.

FIG. 14 is a plan view showing another embodiment of the grindstone handling jig according to the present invention, in which the grindstone handling jig according to the present invention has the variable flange 115 formed on both sides of the rotary shaft bracket 111, The variable flange 115 can be formed in a multi-joint structure.

According to the embodiment as shown in FIG. 14, the diameter of the grindstone 101 that can be replaced can be further diversified, and the advantage of being able to freely enter the flange can be obtained.

The present invention is characterized in that both left and right side end portions of a flange assembling portion which surrounds and engage the outer periphery of a grindstone are supported on a main holder portion so as to be rotatable and the flange assembly portion is rotated around a rotation axis in a state where the grindstone is assembled, So that the transporting or polishing machine replacement work is carried out, so that the replacement time of the grinding machine grindstone can be shortened and the working efficiency using the grinding machine can be improved.

In addition, according to the present invention, a crane is used to move and replace the grinding wheel while being securely fixed to the flange assembly, thereby making it possible to prevent a safety accident and a musculoskeletal disease of a worker during a replacement operation.

In addition, since the present invention can perform a series of replacement operations such as disassembling or assembling the grinding wheel from the grinding machine alone, utilization of the workforce is increased.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and any person skilled in the art can make various modifications without departing from the gist of the present invention. It is to be understood that such changes and modifications are intended to fall within the scope of the appended claims.

101: a grindstone 110: a flange assembly part
111: rotating shaft bracket 113: fixed flange
113a: guide groove 115: variable flange
115a: guide groove 117: flange fixing bar
120: main holder part 121: crane hook part
123: arm portion 125: fixed shaft bracket
130: rotation angle fixing means 131: through hole
133: Fixing pin

Claims (6)

A flange assembly 110 which surrounds and bonds the outer periphery of the grindstone 101;
A main holder 120 for pivotally supporting left and right ends of the flange assembly 110 so as to be rotatable; And
And a rotation angle fixing means 130 for fixing the flange assembly 110 in a horizontal and vertical state by rotating the flange assembly 110 about the rotation axis of the main holder 120.
The method according to claim 1,
The flange assembly 110 includes:
A rotating shaft bracket 111 for shaft coupling with the main holder 120;
A fixing flange 113 extending in one direction around the rotation axis of the rotary shaft bracket 111 and having a guide groove 113a for surrounding the outer periphery of the grindstone 101;
A guide groove 115a extending in the other direction about the rotation axis of the rotation axis bracket 111 and surrounding the outer circumference of the grinding stone 101 is formed and a fixed end hinged to the rotation axis bracket 111 side A variable flange 115 which is rotatable around the center; And
And a flange fixing bar (117) connecting the free ends of the variable flange (115) and restricting movement.
The method according to claim 1,
The flange assembly 110 includes:
A rotating shaft bracket 111 for shaft coupling with the main holder 120;
A guide groove 115a is formed extending in both lateral directions around the rotary shaft of the rotary shaft bracket 111 so as to surround the outer circumference of the grinding stone 101 and a fixed end portion hinged to the rotary shaft bracket 111 side, A variable flange 115 which is rotatable about a center axis; And
And a flange fixing bar (117) connecting the free ends of the variable flange (115) and restricting movement.
4. The method according to claim 2 or 3,
Wherein the variable flange (115) has a multi-joint structure.
The method according to claim 1,
The main holder 120 includes a crane ring 121 for connecting a crane and an arm 123 branched to both sides of the crane ring 121, And a fixed shaft bracket (125) opposed to the rotating shaft bracket (111) is formed at an end of the arm portion (123).
The method according to claim 1,
The rotation angle fixing means 130 is formed so that a plurality of through holes 131 are formed in a straight line around concentric circles of the rotation axis of the rotation axis bracket 111 and the fixing axis bracket 125, Are passed through the fixing pin (133) so that the rotation angle is fixed.

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