KR20110047042A - Apparatus for extracting rotor - Google Patents

Abstract

PURPOSE: A rotor extracting device is provided to prevent an accident due to the separation of a rotor by extracting the rotor while the horizontality of the rotor is maintained. CONSTITUTION: A rotor extracting device(100) includes a replacing unit(110) and a body unit(120). The replacing unit includes a socket(112). The rotation shaft of the rotor is fitted into a socket. The replacing unit is detachably combined with the main body. A first combination unit is arranged on the body unit. A second combination unit is arranged on the replacing unit and is detachably attached to the first combination unit.

Description

Rotor take-off device {APPARATUS FOR EXTRACTING ROTOR}

The present invention relates to a rotor extractor, and more particularly, to a rotor extractor for extracting a rotor of a large motor.

In general, various large and large motors are used in large industries such as steel mills. As an example of such a large-sized motor, an FD fan motor, a mill motor, an ID draft motor, a primary fan fan, a vent fan motor ( Industrial medium and large motors such as a vent fan motor, an exhaust fan motor, a boiler feed water pump motor, and the like can be given.

Such large and large motors require a lot of equipment and personnel to separate the rotor and stator for inspection, repair, and the like. Therefore, in order to take out and assemble the rotor in the medium and large motors, a hoist or a crane installed on the ceiling of a work place is usually used.

In order to take out a rotor using a hoist or a crane, a pipe of a predetermined length is first fitted to the outer circumferential surface of the rotating shaft of the rotor, and then the hoist or crane traction cord is fastened to the pipe. Then, moving the rotor slowly in the horizontal direction while maintaining a constant distance between the outer circumference of the rotor and the inner circumference of the stator while holding the rotor to some extent using a hoist or a crane. Is moved in the horizontal direction in the withdrawal.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

According to the apparatus for extracting the rotor as described above, the pipe fitted to the rotating shaft of the rotor to fasten the traction cord, by appropriately selecting two pipes having an inner diameter similar to the outer diameter of the rotating shaft of the pipes left in the workplace Prepared.

Since these two pipes are difficult to precisely mesh with the rotating shafts, and the inner diameters of the two pipes do not coincide with each other, the rotors supported by both sides of the rotating shafts by these two pipes are difficult to be leveled during the drawing operation. do.

If the rotor is displaced horizontally during the withdrawal of the rotor, a collision between the rotor and the stator may occur and the coils wound around the stator may be damaged, and even the rotor may come off the pipe and cause a safety accident. It also occurs when the rotary shaft is damaged by being inclined while being fitted to the rotary shaft and pressing the side of the rotary shaft.

In addition, according to the apparatus for extracting the rotor as described above, two or more pieces of equipment are required because fastening lines should be fastened to both sides of the rotor.

Therefore, there is a need for improvement.

The present invention was devised to improve the above problems, and provides a rotor withdrawal device having an improved structure to effectively carry out the withdrawal operation of the rotor while maintaining the horizontal of the rotor with one piece of equipment. There is a purpose.

The rotor extracting apparatus according to the present invention comprises: a replacement part having a socket into which a rotating shaft of the rotor is fitted; And a body portion to which the replacement portion is coupled.

In addition, the replacement unit is preferably installed detachably to the body portion.

In addition, the present invention includes a first coupling portion provided in the main body; And a second coupling part provided in the replacement part and detachably coupled to the first coupling part.

In addition, the main body portion, the first body portion provided with the first coupling portion; And a second body portion extending from the first body portion to be bent toward the rotor.

In addition, the first body portion is preferably further provided with a horizontal adjustment member extending in a direction different from the second body portion.

In addition, the horizontal adjustment member is preferably detachably coupled to the first body portion.

In addition, the replacement portion is preferably provided with a plurality of sockets having different inner diameters.

In addition, it is preferable that a plurality of rope hanger holes are further provided inside the main body so that the hanger position can be selected according to the weight of the rotor.

In addition, it is preferable that at least a portion of the plurality of file-hanging hole parts of the file-hanging hole part are formed to have different sizes.

According to the rotor take-out apparatus of the present invention, the coil wound around the stator due to the collision between the rotor and the stator during the rotor take-out operation by allowing the rotor to be taken out while maintaining the horizontal of the rotor so that the horizontal of the rotor is not shifted In addition to preventing the occurrence of a safety accident due to the breakage or departure of the rotor, it is possible to prevent the rotating shaft from being damaged during the withdrawal operation of the rotor.

In addition, the present invention can reduce the cost and the equipment required for the work by allowing the rotor withdrawal operation to be performed effectively with only one piece of equipment.

An embodiment of a rotor takeout apparatus according to the present invention will be described with reference to the accompanying drawings. For convenience of explanation, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is an exploded perspective view showing a rotor extracting apparatus according to an embodiment of the present invention, Figure 2 is a perspective view showing a rotor extracting apparatus according to an embodiment of the present invention, Figure 3 is one of the present invention Sectional drawing showing the state of use of the rotor take-out apparatus according to the embodiment.

1 to 3, the rotor extracting apparatus 100 according to an embodiment of the present invention includes a replacement part 110 and a main body part 120.

Replacement unit 110 has a socket (112). The socket 112 is provided such that the rotation shaft 12 of the rotor 11 provided in the motor 10 is fitted therein, and is formed to penetrate the inside thereof so that the rotation shaft 12 of the rotor 11 can be fitted thereto. .

Replacement unit 110 is coupled to the body portion 120. The main body 120 is provided so that the tow line 1 connected to equipment (not shown) such as a hoist or a crane is fastened, and one side is coupled with the replacement unit 110. The body portion 120 includes a first body portion 122 and a second body portion 124.

The first body portion 122 is a portion that is coupled with the replacement portion 110, the first body portion 122 is provided with a first coupling portion 125. The first coupling part 125 is provided on one side of the first body part 122, for example, the lower side of the first body part 122, and the replacement part 110 is coupled to the first coupling part 125. do.

The second body portion 124 extends from the first body portion 122 to the rotor 11 side. The second body portion 124 is located on the top of the rotor 11 fitted to the socket 112 of the replacement portion 110, preferably extending substantially parallel to the bottom surface supporting the motor 10. do.

Inside the main body 120 is provided with a hook hole portion 126. The file hook hole portion 126 is a portion providing the file hook position to which the tow line 1 connected to the equipment is fastened, and is provided to penetrate the inside of the first body portion 122 and the inside of the second body portion 124. .

The rope hook hole 126 is provided with a plurality inside the main body 120 so that the string hook position of the tow line 1 connected to the equipment can be selected according to the weight of the rotor (11). Each of the string hook holes 126 is disposed to be spaced apart from each other along the length direction of the first body 122 and the second body 124.

According to this embodiment, the second body portion 124 is formed so that one side thereof has a width of a predetermined width or more to secure the rigidity of the bent portion that is a contact with the first body portion 122. The second body portion 124 is formed so that its width gradually narrows from one side to the other end. The body portion 120 including the second body portion 124 may be reduced in weight so as to reduce the weight of the entire rotor extractor 100.

At least some of the string hook holes 126 of the string hook holes 126 provided inside the main body 120 are formed in different sizes. In the present embodiment, the hook hole portion 126 provided inside the main body portion 120 is exemplarily formed to have a different size according to the width of the main body portion 120 corresponding to the disposed position.

That is, each of the string hook hole 126 is formed to have the largest size within the range that the rigidity of the main body 120 can be maintained, accordingly for a plurality of string hooks provided in the main body 120 The hole portion 126 is formed to have a larger size toward the first body portion 122 side from the other end side of the second body portion 124.

The hook-shaped hole portion 126 formed as described above serves to reduce the weight of the body portion 120 while providing a space in which the tow line 1 connected to the equipment can be fastened to the body portion 120.

According to the present embodiment, the replacement unit 110 is detachably installed in the main body unit 120. The replacement portion 110 is provided with a second coupling portion 115. The second coupling part 115 is formed to extend from the socket 112 and is detachably coupled to the first coupling part 125. The second coupling part 115 is detachably coupled to the first coupling part 125 to detachably couple the socket 112 to the main body part 120, so that the replacement part 110 is the main body part 120. It can be installed detachably.

In addition, the replacement unit 110 may include a plurality of sockets 112 having different inner diameters. In the present embodiment, the replacement unit 110 includes a plurality of second coupling units 115 and a plurality of sockets 112, and each socket 112 is connected to a different second coupling unit 115, respectively. It is illustrated as being provided separately from the other socket 112.

Preferably, the plurality of sockets 112 provided in the replacement unit 110 may be provided in a number corresponding to a standard of the motor 10, that is, an outer diameter standard of the rotating shaft 12. For example, the outer diameter specifications of the rotating shaft 12 of the rotor 11 provided in the motor 10 to be worked on are 75φ, 80φ, 85φ, 90φ, 95φ, 100φ, 105φ, 115φ, 125φ, 130φ, 135φ In the case of 15 types, 145φ, 155φ, 165φ, 175φ, and 185φ, the replacement part 110 may include 15 kinds of sockets 112 having inner diameters corresponding to the respective standards.

As such, the replacement part 110 having the plurality of sockets 112 may be selected according to the outer diameter standard of the rotating shaft 12 of the rotor 11 provided in the motor 10 to be worked. have. For example, when the outer diameter of the rotating shaft 12 to be the work object is 100φ, the use of the replacement unit 110 having a socket 112 having an inner diameter of 100φ is selected, and the rotation shaft 12 of the rotating shaft 12 to be the work target is selected. When the outer diameter is 155φ, the inner diameter may be replaced with a replacement part 110 having the socket 112 having the inner diameter of 155φ.

As such, the replacement part 110 provided to be replaceable according to the outer diameter standard of the rotating shaft 12 to be the working object may be fitted to be engaged with the rotating shaft 12 precisely, thereby stably supporting the rotating shaft 12.

On the other hand, the main body 110 may further include a horizontal adjusting member (128). The horizontal adjusting member 128 is provided in the first body portion 122 and extends in a direction different from the second body portion 124, for example, the direction opposite to the rotor 11 side.

The horizontal adjusting member 128 is held by the worker by hand so that the shake of the rotor withdrawal apparatus 100 and the rotor 11 withdrawn by the rotor withdrawal apparatus 100 are suppressed when the rotor 11 is withdrawn. This is a part to guide the movement of the rotor take-off device 100.

Preferably, the horizontal adjustment member 128 is provided to be detachably coupled to the first body portion (112). The horizontal adjusting member 128 may be used in combination with the first body 112 when necessary.

4 is a cross-sectional view illustrating a rotor withdrawal process of the rotor withdrawal apparatus shown in FIG. 3.

3 and 4, the operation and effect of the rotor take-out apparatus according to the present embodiment will be described.

As shown in FIG. 3, in order to withdraw the rotor 11 from the inside of the stator 15 using the rotor extracting apparatus 100 of the present embodiment, first, a plurality of sockets 112 are to be drawn out. The replacement part 110 including the socket 112 having an inner diameter corresponding to the outer diameter of the rotation shaft 12 of the electron 11 is selected.

Then, the socket 112 is inserted into the rotating shaft 12 of the rotor 11, while the second coupling part 115 is coupled to the first coupling part 125 to replace the replacement part 120 with the main body part ( 110). At this time, the process of fitting the socket 112 to the rotating shaft 12 and the process of coupling the replacement portion 120 to the main body portion 110 may be performed first.

When the rotating shaft 12 of the rotor 11 is coupled with the rotor extractor 100, at least one of the plurality of rope hook holes 126 provided in the main body 110 with the tow line 1 connected to the equipment. By fastening to, the tow line (1) connected to the equipment is connected to the rotor take-off device 100. The fastening of the tow line 1 and the hook-hole hole 126 as described above may be made through the ring (2) provided at the end of the tow line (1).

When connecting the tow line (1) connected to the equipment as described above to the rotor take-off device 100, when the equipment lifts the rotor take-off device 100 and the rotor 11 coupled thereto the rotor (11) It is very important to select and connect the line hanger position so that the cable remains horizontal.

To this end, when connecting the tow line (1) connected to the equipment to the rotor take-off device 100, the rotor 11 in consideration of the weight of the rotor (11) of the plurality of rope hook holes 126, When lifting, selecting the rope hanger hole portion 126 disposed in the rope hanger position that can maintain the horizontal level of the rotor 11, and tightens the tow line (1) to the selected rope hanger hole portion 126.

According to the present embodiment, according to the weight standard of the rotor 11 to be drawn out, the hooking hole portion 126 corresponding to the hooking position that can maintain the horizontalness of the rotor 11 may be previously designated. Accordingly, the selection of the hanger position as described above may be further facilitated.

As described above, the rotor extracting device 100 of the present embodiment, which is fastened to the tow line 1, has a rotor 11 even when the tow line 1 is fastened to only one of the line hanger holes 126 of the plurality of hanger holes 126. ), The rotor 11 withdrawal using the rotor withdrawal operation 100 can be effectively performed with only one piece of equipment.

In addition, when the plurality of hooks 2 are provided in the tow line 1, the tow line 1 is attached to the selected line hooking hole 126 and the surrounding line hooking hole 126 using the plurality of hooks 2. By fastening together, it is possible to more stably maintain the horizontal of the rotor (11).

As described above, when the rotor extracting apparatus 100 is fastened to the tow line 1 connected to the equipment, the rotor 11 is lifted to some extent using the equipment. This operation is preferably performed so that the rotor 11 is located at the center of the stator 15 so that no interference occurs between the rotor 11 and the stator 15 when the rotor 11 is pulled out.

Then, as shown in Figure 4, by using the equipment to slowly move the rotor 11 in the horizontal direction while maintaining a constant distance between the outer peripheral surface of the rotor 11 and the inner peripheral surface of the stator 15 On the main surface, the rotor 11 is moved out of the stator 15 in the horizontal direction and drawn out.

At this time, if the shaker of the rotor takeout device 100 and the rotor 11 occurs or the horizontal shift occurs, when the operator holds the horizontal adjusting member 128 to support the rotor takeout device 100, the rotor The shake of 11 is suppressed, and the horizontal of the rotor 11 can be adjusted according to the will of the operator.

The rotor extracting apparatus 100 of the present embodiment as described above has a replaceable part 110 replaceable according to the outer diameter standard of the rotating shaft 12 to be the work target, so that the rotating shaft 12 at the time of extracting the rotor 11. ) Can be supported stably.

In addition, the rotor take-out apparatus 100 of the present embodiment includes a horizontal adjusting member 128 that can be held by the operator by hand, thereby not only preventing the rotor 11 from shaking, but also rotating the rotor ( The level of 11) can be adjusted according to the worker's will.

The rotor extracting apparatus 100 of the present embodiment allows the rotor 11 to be drawn out while maintaining the horizontal of the rotor 11 such that the rotor 11 is not shifted horizontally, thereby pulling out the rotor 110. Not only can the coil wound around the stator 15 be damaged due to a collision between the rotor 11 and the stator 15 during operation, or a safety accident due to the detachment of the rotor 11 can be prevented. (11) It is possible to prevent the rotating shaft 12 from being broken during the drawing operation.

In addition, the rotor extracting apparatus 100 according to the present embodiment may maintain the horizontalness of the rotor 11 even when the tow line 1 is fastened to only one of the plurality of file hook holes 126. Therefore, the withdrawal operation of the rotor 11 can be effectively performed with only one piece of equipment, thereby reducing the equipment and cost required for the work.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is an exploded perspective view showing a rotor takeout apparatus according to an embodiment of the present invention.

Figure 2 is a perspective view showing a rotor take-out apparatus according to an embodiment of the present invention.

3 is a cross-sectional view showing a state of use of the rotor take-out apparatus according to an embodiment of the present invention.

4 is a cross-sectional view illustrating a rotor withdrawal process of the rotor withdrawal apparatus shown in FIG. 3.

Explanation of symbols on the main parts of the drawings

100: rotor withdrawal device 110: replacement unit

112: socket 115: second coupling part

120: main body 122: first main body

124: second body portion 125: second coupling portion

126: hole for the hook hanger 128: horizontal adjustment member

Claims (9)

A replacement part including a socket into which a rotating shaft of the rotor is fitted; And Rotor withdrawal device characterized in that it comprises a main body coupled to the replacement. The method of claim 1, The replacement unit is a rotor extracting device, characterized in that detachably installed in the main body. The method of claim 2, A first coupling part provided in the main body part; And And a second coupling part provided in the replacement part and detachably coupled to the first coupling part. The method of claim 3, wherein the main body portion, A first body part having the first coupling part; And And a second body portion extending to be bent from the first body portion to the rotor side. The method of claim 4, wherein The first body portion further comprises a horizontal adjusting member extending in a direction different from the second body portion. The method of claim 5, The horizontal adjusting member is a rotor withdrawal device, characterized in that detachably coupled to the first body portion. The method of claim 1, The replacement unit comprises a plurality of sockets having different inner diameters. The method according to any one of claims 1 to 7, Rotor extracting apparatus, characterized in that a plurality of rope hook hole portion is further provided inside the main body portion so that the hook hanger position can be selected according to the weight of the rotor. The method of claim 8, Rotor take-out device, characterized in that the at least part of the plurality of rope hook hole portion formed in the size different from each other.

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