KR20240006292A - Device for removing rotor of motor - Google Patents

Abstract

The present invention includes a jig body mounted on an arm of heavy equipment by a belt or chain; A bent portion bent and extended from one end of the jig body toward the rotor; And a belt or chain is wound around the center of the jig body so that the jig body is mounted on heavy equipment in a horizontal direction, and a connecting piece is installed to be slidable in the left and right directions.

Description

Jig device for removing the rotor of the motor {DEVICE FOR REMOVING ROTOR OF MOTOR}

The present invention relates to a jig device for pulling out rotors of motors. More specifically, the fixed chuck can be easily connected to the arm of heavy equipment so that rotors can be safely pulled out from motors of various sizes, and the fixed chuck can be maintained in a horizontal direction. This prevents safety accidents that occur during rotor extraction work, and the height of the horizontal maintenance block and extension can be adjusted according to the height of the fixing chuck, preventing the jig device from tilting when separating rotors from motors of various sizes. This relates to a jig device for pulling out the rotor of a motor.

In general, a motor is a machine that converts electrical energy into rotational energy. The stator, which is made up of a casing, usually a coil, has a gap with the rotor, and the rotor generates power by inducing electromagnetic force from the stator and rotating the rotor. It is done.

In power plants, FD fan motors (forced draft fan motors), mill motors, ID fan motors (induced draft fan motors), PA fan motors (primary air fan motors), vent fan motors, and ventilation fans are used. Large industrial motors such as exhaust fan motors and boiler feed water pump motors are used.

Large motors are devices that are placed at each work site and play the role of generating power by converting electrical energy into rotational energy. The stator and rotor, which are usually made of coils, generate power by rotating the electromagnetic force from the stator to the rotor. there is.

Motors with the above configuration require regular disassembly inspection and maintenance such as bearing replacement, and the most important thing in disassembly inspection and maintenance of these motors is to remove the rotor, which has a gap of only 3 to 5 mm from the stator, from the stator. When separating, the purpose is to prevent damage to the motor due to mutual contact by preventing contact between the stator and rotor.

The method of disassembling and assembling the rotor of such a large motor uses a hoist or crane installed on the ceiling. For this purpose, each workshop has two cranes installed on the ceiling that can handle the weight of facilities such as large motors in the workshop. This is arranged.

These cranes typically roll up equipment by integrating an electric motor, reduction device, and winding drum, and are also configured to travel on their own along rails installed on the ceiling.

The crane configured in this way is equipped with a tow line for disassembling and assembling brackets on which bearings are mounted in large motors in the workshop and rotors having shafts fastened to the bearings of these brackets.

In addition, a support bar such as a pipe fixed by insertion is disposed on one shaft of the rotor provided in the motor.

The tow line is fastened to the rotation axis opposite to the support bar, and the tow line or chain thus fastened is fastened to the crane, positions the rotor at the center of the stator of the motor, and keeps the gap between the outer circumference of the rotor and the inner circumference of the stator constant. do.

At this time, when the crane moves along the rail, the rotor fastened with a tow line is disassembled from the stator and inspected, and then the rotor after inspection is reassembled at the center of the stator in the reverse order of the disassembly method.

In addition, the rotor is also pulled out, inserted, and coupled from the stator in the same manner as above, but when the rotor is pulled out, disassembled, and assembled, the rotor is pulled out or combined with a tow line by the movement of the crane, and the tow line is positioned diagonally due to the movement of the crane. As this happens, the rotor is lifted slightly, and as a result, the rotor cannot be discharged horizontally, so the worker has to apply an impact using a hammer or the like to discharge it. However, there is a problem in that deformation occurs when an impact is applied to the rotor.

In order to solve this problem, a motor rotor extraction device published in Domestic Patent Publication No. 2010-0060239 and a motor disassembly and maintenance device published in Domestic Patent Registration No. 10-1033127 have been disclosed.

The rotor extraction device of the motor has a rotor insertion part that is open on one side to allow the rotor of the motor to be inserted, and has spaced first and second chuck parts that bite and secure the rotor of the motor inserted into the rotor insertion part. After moving the rotor fixing member to the installation position of the motor, including a rotor fixing member and a base moving member on which the rotor fixing member is mounted and a plurality of wheel parts that roll in contact with the floor at the bottom, the first chuck part and the first chuck part are moved to the installation position of the motor. 2 While holding the motor rotor stably with the chuck, simply separate the stator and rotor by moving the rotor fixing member.

In addition, the motor disassembly and maintenance device is formed in a plate shape and is provided on the upper side of the bogie part with a wheel to move in one direction at the bottom and is formed to seat the motor to be disassembled, "┌┐" A motor seating unit consisting of a support portion formed in the shape of a ruler, transport wheels provided at both ends of the support unit, and a driving means installed on one side of the support unit to provide power so that the transport wheels can move in one direction, and a motor seating unit. The first jig part is located in the direction in which the part is transported and supports one end of the rotor rotation axis of the motor to be disassembled, and is equipped with a vertical transfer workbench that is raised and lowered in the vertical direction, and the first jig part is located in the other direction of the motor seating part and supports the rotor axis of the motor to be disassembled. It is formed so that the rotor separated from the motor can be seated on the second jig part, which supports the other end of the rotor rotation shaft and is formed with a support piece that is raised and lowered in the vertical direction, and is formed so that the support part can be raised and lowered in the vertical direction by the cylinder. Includes a lifting part.

However, there is a problem in that the rotor cannot be disassembled from the stator of a large-capacity motor with such conventional motor rotor extraction devices and motor disassembly and maintenance devices.

Domestic Public Patent No. 2010-0060239 Domestic Registered Patent No. 10-1033127

The device according to the prior art does not have a separate technical configuration to prevent the jig device that supports the rotor from tilting so that it can maintain the horizontal direction, so the jig device is used when mounting the rotor and separating it from the stator. There is a problem in that the rotor and the stator may collide as it warms, and a safety accident may occur in which the jig device is tilted and the rotor falls during the operation of separating and discharging the rotor from the stator.

Therefore, there is a need to improve this.

In the present invention, a fixed chuck can be easily connected to the arm of heavy equipment to safely extract rotors from motors of various sizes, and the fixed chuck can maintain a horizontal direction, preventing safety accidents that occur during rotor extraction work. The purpose is to provide a jig device for pulling out the rotor of a motor, which can prevent the jig device from tilting when separating the rotor from motors of various sizes by adjusting the height of the horizontal maintenance block and extension depending on the height of the chuck.

The present invention includes a jig body mounted on an arm of heavy equipment by a belt or chain; A bent portion bent and extended from one end of the jig body toward the rotor; And a belt or chain is wound around the center of the jig body so that the jig body is mounted on heavy equipment in a horizontal direction, and a connecting piece is installed to be slidable in the left and right directions.

In addition, the present invention includes a jig body having a bent portion extending toward the rotor at one end, a belt or chain wound around the central portion to be mounted horizontally, and a connecting piece sliding in the left and right directions; A horizontal maintenance block provided at the other end of the jig body, having a plurality of fixing grooves, and providing a weight to the other end of the jig body to prevent the jig body from tilting to one side; a plurality of extensions inserted into the fixing groove and extending laterally; A vertical stand disposed opposite to the outer end of the extension to support the outer end of the extension and having a plurality of wheel members at the bottom to sit upright on the ground; A connecting bar connecting the extension bar and the vertical bar; And a length adjustment unit that adjusts the length of the connecting rod protruding from the extension, and adjusts the distance between the horizontal maintenance block and the ground by adjusting the length of the connecting rod protruding from the vertical rod.

In addition, the length adjusting part of the present invention includes a horizontal adjusting part that fixes the connecting rod to the extending rod after the connecting rod is pulled out or inserted from the extending rod; a vertical adjusting unit that secures the connecting rod to the vertical rod after the connecting rod is pulled out or inserted from the vertical rod; and an interlocking release unit provided on the connection bar to simultaneously release or restrain the horizontal adjustment unit and the vertical adjustment unit.

In addition, the horizontal adjusting part of the present invention includes a plurality of first coupling grooves provided in the horizontal part of the connecting table and arranged continuously at regular intervals; a first fixing protrusion protruding from the horizontal portion to be inserted into any one of the plurality of first coupling grooves; and a first elastic member that provides an elastic force to press the first fixing protrusion to the outside of the horizontal portion so that the first fixing protrusion remains protruding from the horizontal portion.

The jig device for pulling out the rotor of a motor according to the present invention is provided with a bent portion on which a fixing chuck is installed at one end of the jig body, and a horizontal maintenance block and an extension bar are provided at the other end of the jig body so that the jig body can be adjusted to maintain the horizontal direction. When separating the rotor from the motor, the jig body maintains a horizontal direction, preventing interference between the rotor and the stator, and has the advantage of preventing safety accidents that occur when the jig body is tilted during the work of separating the rotor from the motor. .

In addition, the jig device for pulling out the rotor of the motor according to the present invention is provided with an extension bar, a vertical bar, and a connecting bar that support the other end of the jig body to maintain the horizontal direction of the jig body, so it is connected to the jig body according to the weight of the rotor. By adjusting the position of the belt or chain, it is possible to prevent the jig body from tilting towards the rotor. Since the other end of the jig body is supported by the horizontal maintenance block, extension bar, vertical bar, and connecting bar, the jig main body can be prevented from tilting towards the other end. This has the advantage of effectively maintaining the horizontal direction of the jig body while preventing damage.

In addition, the jig device for pulling out the rotor of the motor according to the present invention is provided with a length adjustment part that adjusts the length of the connecting rod connecting the extension rod and the vertical rod, so that there is a gap between the extension rod disposed in the horizontal direction and the vertical rod disposed in the vertical direction. The height of the horizontal maintenance block can be adjusted while adjusting the distance, so the height of the jig body can be adjusted according to the size of the motor. Even if the height of the jig body is adjusted, the length adjustment part can be operated to ensure that the other end of the jig body is supported from the ground. There is an advantage to maintaining it.

In addition, the jig device for pulling out the rotor of the motor according to the present invention is provided with an interlocking release part that simultaneously releases the restraint state of the horizontal adjusting part and the vertical adjusting part forming the length adjusting part, so when manipulating the length adjusting part, the release lever of the interlocking releasing part is pulled. There is an advantage that the length adjustment part can be easily operated as the restraint state of the horizontal adjustment part and the vertical adjustment part is simultaneously released.

Figure 1 is a perspective view showing a jig device for pulling out a rotor of a motor according to an embodiment of the present invention.
Figure 2 is a perspective view showing a jig device for pulling out the rotor of a motor according to another embodiment of the present invention.
Figure 3 is a cross-sectional view showing a detachable part of a jig device for pulling out a rotor of a motor according to another embodiment of the present invention.
Figure 4 is a cross-sectional view showing the length adjustment part of the jig device for pulling out the rotor of the motor according to another embodiment of the present invention.

Hereinafter, an embodiment of a jig device for pulling out a motor rotor according to the present invention will be described with reference to the attached drawings.

In this process, the thickness of lines or sizes of components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator.

Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 is a perspective view showing a jig device for pulling out a rotor of a motor according to an embodiment of the present invention, Figure 2 is a perspective view showing a jig device for pulling out a rotor of a motor according to another embodiment of the present invention, and Figure 3 is a cross-sectional view showing the detachable part of the jig device for taking out the rotor of the motor according to another embodiment of the present invention, and Figure 4 is a cross-sectional view showing the length adjustment part of the jig device for taking out the rotor of the motor according to another embodiment of the present invention. .

Referring to FIG. 1, the jig device for extracting the rotor of a motor according to an embodiment of the present invention includes a jig body 10 mounted on the arm of heavy equipment by a belt or chain, and a rotor at one end of the jig body 10. It includes a bent portion 12 that is bent and extended to the side, and a connection piece that has a belt or chain wound around the center of the jig body 10 and is slidable in the left and right directions so that the jig body 10 is mounted on heavy equipment in the horizontal direction.

Therefore, the jig body 10 is mounted by wrapping the belt or chain extending from the heavy equipment arm around the connection piece slidably installed in the center of the jig body 10, and the jig body 10 is attached to the bent portion 12 extending from one end of the jig body 10. The rotating shaft of the rotor is fixed to the fixed chuck (14) by manipulating the provided fixed chuck (14).

Afterwards, the jig body 10 and the rotor can be separated from the motor while sliding the connecting piece in the left and right directions from the jig body 10 and maintaining the jig body 10 in the horizontal direction.

Referring to Figures 2 to 4, the jig device for pulling out the rotor of a motor according to another embodiment of the present invention has a bent portion 12 extending toward the rotor at one end, and a belt or chain at the center to be mounted in the horizontal direction. The jig body 10 is provided with a connecting piece that is wound and slides in the left and right directions, and is provided at the other end of the jig body 10, and is provided with a plurality of fixing grooves 18, so that the jig body 10 is not tilted to one side. A horizontal maintenance block 16 that provides a heavy load to the other end of the jig body 10, a plurality of extensions 30 inserted into the fixing groove 18 and extending laterally, and an outer side of the extension 30 A vertical stand 32 disposed opposite to the outer end of the extension 30 to support the end and provided with a plurality of wheel members 34 at the bottom to be seated upright on the ground, the extension 30 and the vertical stand By adjusting the connecting rod 36 that connects (32) and the length at which the connecting rod 36 protrudes from the extension rod 30, and adjusting the length at which the connecting rod 36 protrudes from the vertical rod 32, the horizontal maintenance block is maintained. It includes a length adjustment unit 50 that adjusts the distance between (16) and the ground.

Therefore, when separating the rotor from the motor, the jig body 10 is mounted by wrapping a belt or chain extending from heavy equipment such as a crane or excavator around the connecting piece provided in the center of the jig body 10, and one end of the jig body 10 Connect the fixing chuck 14 at the bottom of the bent portion 12 extending downward from the rotor to the rotation axis of the rotor, and slide the connecting piece in the left and right directions along the jig body 10 to maintain the horizontality of the jig body 10. do.

At this time, a pair of extensions 30 are inserted into the horizontal maintenance block 16 provided at the other end of the jig body 10 to extend in the lateral direction, and a connecting rod 36 is installed at the outer end of each extension 30. And a vertical stand 32 is installed to maintain the horizontal maintenance block 16 at a certain height from the ground.

Since fixing grooves 18 are formed on the front and back surfaces of the horizontal maintenance block 16, respectively, when the extension bar 30 is inserted and fixed into the pair of fixing grooves 18, it moves from the top of the motor to the front and rear of the motor. Since the pair of extension bars 30 are extended and supported on the ground by the vertical bar 32 and the connecting bar 36, the connecting bar 36 and the vertical bar 32 are supported on the ground so as not to interfere with the motor.

As described above, the connection piece is slid toward the bent portion 12 to prevent the support body from tilting toward the bent portion 12, and an extension bar 30 and a connecting bar 36 are installed on the horizontal maintenance block 16 provided at the other end of the support body. ) and the vertical bar 32 are connected to prevent the support body from tilting to the other end, so that the rotor can be safely withdrawn from the motor while adjusting the support body to remain horizontal.

In addition, in this embodiment, when the size of the motor is large, the height of the jig body 10 must be placed a certain amount higher than the ground. At this time, the distance between the extension bar 30 and the vertical bar 32 is By manipulating the length adjusting unit 50, the extension bar 30, which is placed relatively high above the ground, can be supported from the ground, making it possible to safely withdraw rotors from motors of various sizes.

The length adjusting unit 50 of this embodiment includes a horizontal adjusting unit 52 that fixes the connecting rod 36 to the extending rod 30 after the connecting rod 36 is pulled out or inserted into the extending rod 30, and a connecting rod ( Constraint of the vertical adjustment unit 54, the horizontal adjustment unit 52, and the vertical adjustment unit 54 for fixing the connecting rod 36 to the vertical rod 32 after 36) is pulled out or inserted from the vertical rod 32. It includes an interlocking release unit 56 provided on the connection bar 36 to simultaneously release or restrain the state.

The connecting bar 36 of this embodiment is bent in an 'L' shape and consists of a horizontal part 37 and a vertical part 38, and the horizontal part 37 is slidably inserted into the outer end of the extension bar 30. , the vertical portion 38 is slidably inserted at the top of the vertical stand 32.

Accordingly, the extension 30 can be extended laterally longer depending on the length of the horizontal portion 37 protruding from the extension 30, and the length of the vertical portion 38 protruding from the vertical portion 32 Accordingly, the height of the extension bar 30 and the horizontal maintenance block 16 can be adjusted.

In addition, the horizontal adjustment unit 52 of the present embodiment is provided on the horizontal portion 37 of the connecting stand 36, and includes a plurality of first coupling grooves 52a arranged in succession at regular intervals, and a plurality of first coupling grooves 52a. A first fixing protrusion (52b) installed to be able to protrude from the horizontal portion (37) so as to be inserted into any one of the first coupling grooves (52a) of the first coupling groove portion (52a), and the first fixing protrusion (52b) is installed on the horizontal portion. It includes a first elastic member (52c) that provides an elastic force to press the first fixing protrusion (52b) to the outside of the horizontal portion (37) to maintain the state protruding from (37).

Here, a plurality of first coupling grooves 52a are formed continuously at regular intervals on the inner wall of the extension 30, and the first fixing protrusions 52b are installed to protrude outward from the horizontal portion 37. In addition, a first elastic member (52c) is interposed between the first fixing protrusion (52b) and the inner wall of the horizontal portion (37) to provide an elastic force that causes the first fixing protrusion (52b) to protrude outward from the horizontal portion (37). .

In addition, the vertical adjustment portion 54 of the present embodiment includes a plurality of second coupling grooves 54a formed continuously on the vertical inner wall at regular intervals, and one of a plurality of second coupling grooves 54a. A second fixing protrusion (54b) is installed to protrude outward from the vertical portion (38) so as to be inserted into the second coupling groove (54a), and is interposed between the second fixing protrusion (54b) and the inner wall of the vertical portion (38). 2 It includes a second elastic member 54c that provides an elastic force to press the fixing protrusion 54b to the outside of the vertical portion 38.

Therefore, the second fixing protrusion 54b is retracted to the inside of the vertical portion 38 by manipulating the disengaging portion 56, and then the vertical portion 38 is slid inside or outside the vertical portion 32 to form the extension portion 30. After determining the height, when the interlocking release portion 56 is converted to the restrained state, the compressed second elastic member 54c is restored to its original state and the second fixing protrusion 54b is protruded outward from the vertical portion 38 to form a second elastic member 54b. Since it is inserted into the coupling groove 54a, the vertical portion 38 is maintained in a state of protruding from the vertical stand 32.

The disconnection unit 56 according to this embodiment includes a first wire 56a extending from the first fixing protrusion 52b, a second wire 56b extending from the second fixing protrusion 54b, and a first fixing protrusion 52b. The first wire (56a) and the second wire (56b) are connected at the same time and include a release lever (56c) that is installed to be tensionable outside the connecting stand (36).

Therefore, when the worker pulls the release lever (56c) in the outer direction of the connecting rod (36), the first wire (56a) and the second wire (56b) are pulled, and the first fixing protrusion (52b) and the second fixing protrusion (54b) are connected to the connecting rod (56c). (36) As it is inserted inward, it is separated from the first coupling groove (52a) and the second coupling groove (54a), and the connecting bar (36) is converted to a state where it can slide from the extension bar (30) and the vertical bar (32), thereby reducing the length. You can control it.

In addition, this embodiment further includes a detachable part 70 that detachably connects the extension 30 to the horizontal maintenance block 16, and the detachable part 70 of this embodiment includes the extension 30. An inclined surface 72 formed at the inner end, a hook member 74 provided with an inclined portion facing the inclined surface 72 and protruding in the inner direction of the fixing groove 18, and a hook member 74 are caught. A connection groove 76 formed on the outer wall of the extension 30 so as to be coupled, and a hook member 74 and a horizontal maintaining block 16 to provide an elastic force that presses the hook member 74 in the inner direction of the connection groove 76. A third elastic member 77 interposed between the inner walls, a third wire 78 extending from the hook member 74 to the outside of the horizontal maintaining block 16, and a third wire 78 installed at the outer end of the third wire 78. Includes a lever member (79).

Therefore, when the inner end of the extension 30 is inserted into the fixing groove 18, the inclined surface 72 and the inclined portion come into close contact, and the inclined portion is pressed to retract the hook member 74 to the inside of the horizontal maintenance block 16, and the extension When the insertion of (30) continues and the hook member (74) and the connection groove portion (76) are disposed to face each other, the compressed third elastic member (77) expands to its original state and connects the hook member (74) to the horizontal maintaining block (16). Since it protrudes inward, it is inserted into the connection groove 76 and the extension bar 30 and the horizontal maintenance block 16 are engaged.

After the above-described connection operation is performed and the rotor withdrawal operation is completed, when the operator pulls the lever member 79, the hook member 74 retreats and separates to the outside of the connection groove 76, so that the extension bar 30 is horizontal. By separating it from the holding block 16, the space required for storage of the jig device can be reduced.

As a result, the fixed chuck can be easily connected to the arm of heavy equipment to safely withdraw rotors from motors of various sizes, and the fixed chuck can maintain a horizontal direction, preventing safety accidents that occur during rotor removal work. The height of the horizontal maintenance block and the extension can be adjusted depending on the height, making it possible to provide a jig device for pulling out the rotor of a motor that can prevent the jig device from tilting when separating the rotor from motors of various sizes.

The present invention has been described with reference to an embodiment shown in the drawings, but this is merely illustrative, and various modifications and other equivalent embodiments can be made by those skilled in the art. You will understand.

In addition, although the jig device for pulling out the rotor of a motor has been described as an example, this is only an example, and the jig device of the present invention can be used in products other than the jig device for pulling out the rotor of the motor.

Therefore, the true technical protection scope of the present invention should be determined by the scope of the patent claims below.

10 ; Jig body 12: bend part
14: Fixed chuck 16: Horizontal maintenance block
18: Fixing groove 30: Extension bar
32: vertical bar 34: wheel member
36: connecting bar 37: horizontal part
38: vertical part 50: length adjustment part
52: horizontal adjustment portion 52a: first coupling groove portion
52b: first fixing protrusion 52c: first elastic member
54: Vertical adjustment portion 54a: Second coupling groove portion
54b: second fixing protrusion 54c: second elastic member
56: Disconnection unit 56a: First wire
56b: second wire 56c: release lever
70: Detachable part 72: Inclined surface
74: Hook member 76: Fixing groove
77: third elastic member 78: third wire
79: Lever member

Claims (4)

A jig body mounted on the arm of heavy equipment by a belt or chain;
A bent portion bent and extended from one end of the jig body toward the rotor; and
A jig device for pulling out a rotor of a motor, characterized in that a belt or chain is wound around the center of the jig body so that the jig body is mounted on heavy equipment in a horizontal direction, and a connecting piece is installed to be slidable in the left and right directions.
A jig body having a bent portion extending toward the rotor at one end, a belt or chain wound around the central portion to be mounted horizontally, and a connecting piece sliding in the left and right directions;
A horizontal maintenance block provided at the other end of the jig body, having a plurality of fixing grooves, and providing a weight to the other end of the jig body to prevent the jig body from tilting to one side;
a plurality of extensions inserted into the fixing groove and extending laterally;
A vertical stand disposed opposite to the outer end of the extension to support the outer end of the extension and having a plurality of wheel members at the bottom to sit upright on the ground;
A connecting bar connecting the extension bar and the vertical bar; and
The motor is characterized in that it includes a length adjustment unit that adjusts the length of the connecting rod protruding from the extension, and adjusts the distance between the horizontal maintenance block and the ground by adjusting the length of the connecting rod protruding from the vertical rod. Jig device for rotor withdrawal.
The method of claim 2, wherein the length adjusting unit,
a horizontal adjusting unit that secures the connecting rod to the extending rod after the connecting rod is pulled out or inserted from the extending rod;
a vertical adjusting unit that secures the connecting rod to the vertical rod after the connecting rod is pulled out or inserted from the vertical rod; and
A jig device for pulling out a rotor of a motor, comprising an interlocking release part provided on the connection bar to simultaneously release or restrain the horizontal adjustment part and the vertical adjustment part.
The method of claim 3, wherein the horizontal adjusting unit,
A plurality of first coupling grooves are provided on the horizontal part of the connecting table and are arranged continuously at regular intervals;
a first fixing protrusion protruding from the horizontal portion to be inserted into any one of the plurality of first coupling grooves; and
A jig for pulling out a rotor of a motor, comprising a first elastic member that provides an elastic force to press the first fixing protrusion to the outside of the horizontal part so that the first fixing protrusion remains protruding from the horizontal part. Device.