JP6180374B2 - Rotating body - Google Patents

Description

  The present invention relates to a rotating body in which a driven wheel is coaxially mounted on a drive shaft so as to be able to be rotated, and more particularly to a torque transmission mechanism from the drive wheel to the driven wheel that can easily replace the driven wheel.

  In conventional elevators, the car is connected and fixed to one end of a rope wound around a sheave that is driven to rotate by a hoist, and the counterweight is connected and fixed to the other end of the rope, and the car and the counterweight are raised and lowered. It is possible to go up and down in the road. And since the sheave needs to be fixed to the output shaft in accordance with the shaft center of the output shaft of the hoisting machine, the sheave is fixed to the output shaft by shrink fitting. The sheave is fixed to the output shaft by bolts. Further, the pin driven into the reamer hole drilled in the sheave and the output shaft simultaneously receives rotational torque from the output shaft and suppresses the occurrence of deviation of the sheave from the output shaft.

  In addition, the conventional sheave of a hoisting machine has an annular sheave body that is attached to the output shaft of the hoisting machine, and each has a rope groove on the peripheral surface portion, and is disposed around the sheave body. And a fixing member insertion hole having a conical inclined surface provided on a side surface portion of the division piece, and a fixing member provided on the sheave body facing the fixing member insertion hole. A holding portion and a conical inclined surface in contact with the conical inclined surface of the fixing member insertion hole are held by the fixing member holding portion and the conical inclined surface of the fixing member insertion hole is pressed by the conical inclined surface. And a fixing member that fixes the split piece to the sheave body (for example, see Patent Document 1). In the conventional sheave of a hoist, the fitting portion between the conical inclined surface of the fixing member insertion hole and the conical inclined surface of the fixing member receives rotational torque to suppress the occurrence of deviation of the sheave with respect to the output shaft. It was.

Japanese Utility Model Publication No.59-012444

  Here, since the sheave is worn by the rope, it needs to be replaced. The replacement of the sheave is a local task.

  However, in a conventional elevator, it is necessary to form a reamer hole on the sheave and the output shaft by simultaneous machining after a new sheave is shrink-fitted and fixed to the output shaft. And it was difficult to process reamer holes at the same time, making it difficult to replace the sheaves at the site.

  In addition, in the conventional hoist sheave, only the split pieces are replaced, and simultaneous reaming of the reamer holes is not necessary. However, in the conventional sheave of the hoist, all of the plurality of divided pieces arranged so as to surround the sheave main body, the peripheral surface portion of the divided piece is centered on the axis of the output shaft of the hoist Since it is necessary to fix to a sheave main body so that it may be located on the same circumference, the exchange work became complicated and it was difficult to replace the sheave in the field.

  The present invention has been made to solve the above-described problems, eliminates the need for simultaneous machining of the reamer holes in the drive shaft and the driven wheel when the driven wheel is replaced, and configures the driven wheel as one part. The purpose is to obtain a rotating body that can easily replace the driven wheel on site.

  A rotating body according to the present invention includes a drive shaft and a driven wheel that is configured of one part, is coaxially mounted on the drive shaft and is rotatably mounted, and the hole direction is defined as the axial direction of the drive shaft. Reamed hole formed in one axial end surface of the drive shaft, and a columnar shape having an outer peripheral surface as a cylindrical surface and one end surface as a first inclined surface intersecting a plane orthogonal to the axis, and the first inclined surface A first pin that is inserted into the reamer hole so that the surface faces the rotation direction of the drive shaft and protrudes from the first inclined surface, and has a larger diameter than the reamer hole, The hole direction is defined as the axial direction of the driven wheel, the pin receiving hole is formed on the other axial end surface of the driven wheel, and the protruding portion of the first pin is stored therein. Axial one end side of the driven wheel and the pin storage hole coaxially with the pin storage hole The internal thread portion that communicates, the outer peripheral surface is a cylindrical surface, the one end surface is a plane orthogonal to the axis, and the other end surface is a column having a second inclined surface having the same inclination angle as the first inclined surface. A second pin disposed in the pin housing hole so that the second inclined surface is in contact with the first inclined surface with the side positioned in the female screw portion; and the second pin A pressing bolt that presses against the first pin, and a mounting bolt that fastens and fixes the driven wheel to the drive shaft.

  According to this invention, after the existing driven wheel is removed, the new driven wheel is coaxially attached to the drive shaft, and the new driven wheel is fastened and fixed to the drive shaft by the mounting bolt. Next, the second pin is inserted into the pin housing hole, and the push-in bolt is screwed into the female thread portion. Then, by tightening the pushing bolt with the set tightening torque, the second pin slides on the first inclined surface of the first pin and is fixed in contact with the inner peripheral surface of the pin housing hole, and the driven wheel is replaced. Is completed. Accordingly, simultaneous machining of the reamer holes on the drive shaft and the driven wheel is not necessary, and the driven wheel is composed of one part, so that the driven wheel can be easily replaced on site.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the whole elevator structure provided with the winding machine to which the rotary body which concerns on Embodiment 1 of this invention is applied. It is sectional drawing which shows the winding machine to which the rotary body which concerns on Embodiment 1 of this invention is applied. It is sectional drawing which shows the principal part of the winding machine to which the rotary body which concerns on Embodiment 1 of this invention is applied. It is sectional drawing which shows the principal part of the winding machine to which the rotary body which concerns on Embodiment 2 of this invention is applied. It is sectional drawing which shows the principal part of the winding machine to which the rotary body which concerns on Embodiment 3 of this invention is applied.

Embodiment 1 FIG.
FIG. 1 is a diagram for explaining the overall configuration of an elevator equipped with a hoisting machine to which a rotating body according to Embodiment 1 of the present invention is applied, and FIG. 2 is a winding to which the rotating body according to Embodiment 1 of the present invention is applied. FIG. 3 is a sectional view showing a main part of the hoisting machine to which the rotating body according to the first embodiment of the present invention is applied.

  In FIG. 1, an elevator includes a hoisting machine 10 installed in a machine room 2 formed in an upper part of a hoistway 1, a passenger car 3 and a counterweight 4 that are disposed in the hoistway 1 so as to be lifted and lowered, And a rope 5 wound around a sheave 30 that is rotationally driven by the hoisting machine 10. One end of the rope 5 wound around the sheave 30 is suspended in the hoistway 1 and connected to the car 3, and the other end of the rope 5 is hung on the deflector 6 and suspended in the hoistway 1. Connected to weight 4. The car 3 and the counterweight 4 can be moved up and down in the hoistway 1 by driving the hoisting machine 10.

  Next, the configuration of the hoisting machine 10 will be described with reference to FIG.

  The hoisting machine 10 includes a stator 12 and a motor unit 11 including a rotor 20 rotatably arranged on the inner peripheral side of the stator 12, a brake 28, and a sheave 30 attached to the motor unit 11. It is equipped with. The sheave 30 constitutes a driven wheel.

  The stator 12 includes an annular stator core 13 and a stator coil 14 attached to the stator core 13. The stator core 13 is held by a flange portion 16 that protrudes radially outward from one axial end of the fixing member 15, and is configured coaxially and integrally with the fixing member 15.

  The rotor 20 includes a disk body 22, a rotor main body 21 including a cylindrical back yoke 23 that is formed integrally with the disk portion 22 so as to protrude from the outer periphery of the disk portion 22 in the axial direction, and an outer periphery of the back yoke 23. And a magnet 24 disposed on the surface. The rotor body 21 is rotatably supported via a bearing 18 on a support shaft 17 that projects the disk portion 22 from the axial center position of the fixing member 15 to the other side in the axial direction, and the back yoke 23 is supported on the inner peripheral side of the stator core 13. And is arranged coaxially with the stator 12. Further, the other end corner in the axial direction of the disk portion 22 is cut away to form a small-diameter sheave holding portion 22a. Note that the outer peripheral surface of the sheave holding portion 22 a is formed in a cylindrical surface centered on the axis of the disk portion 22. Moreover, the disk part 22 becomes an output shaft of the motor part 11, and comprises a drive shaft.

  The brake 28 is installed on the outer peripheral surface of the fixing member 15 so as to face the inner peripheral surface (braking surface) of the back yoke 23, and presses the braking piece 29 against the braking surface to brake the rotor 20.

  The sheave 30 is manufactured in an annular shape, and a rope groove is formed on the outer peripheral surface. The sheave 30 is attached by being shrink-fitted and fixed to the sheave holding portion 22 a, and is fastened and fixed to the disk portion 22 by a mounting bolt 33. Thereby, the sheave 30 is attached to the disk part 22 coaxially.

  Here, the torque transmission mechanism between the disk part 22 and the sheave 30 will be described with reference to FIG.

  The reamer hole 35 is formed on a plane perpendicular to the axis of the disk part 22 located on the outer peripheral side of the sheave holding part 22 a of the disk part 22 with the hole direction as the axial direction of the disk part 22. A first pin 36 having one end surface as a first inclined surface 36a inclined with respect to a plane orthogonal to the axis and the other end surface as a flat surface orthogonal to the axis, the first inclined surface 36a in the rotational direction. The first inclined surface 36a is projected and held in the reamer hole 35.

  Here, to turn the first inclined surface 36a in the rotation direction means that the first inclined surface 36a is placed on a cylindrical surface passing through the axis of the first pin 36 centered on the axis of the disk portion 22. It is arranged so as to be orthogonal to a plane that is in contact with the axial center position. The first inclined surface 36 a is inclined by an angle set with respect to a plane orthogonal to the axis of the first pin 36, that is, a plane orthogonal to the axis of the disk portion 22.

  The second pin 37 is formed in a cylindrical body having one end surface as a second inclined surface 37a inclined with respect to a plane orthogonal to the axis and the other end surface as a flat surface orthogonal to the axis. The angle formed between the second inclined surface 37a and the plane perpendicular to the axis of the second pin 37 coincides with the angle formed between the first inclined surface 36a and the plane orthogonal to the axis of the first pin 36. Yes. A pin housing hole 38 having a diameter larger than that of the reamer hole 35 is formed on one end surface in the axial direction of the sheave 30 with the hole direction as the axial direction of the sheave 30. Furthermore, the female threaded portion 39 having a diameter larger than that of the pin housing hole 38 has the hole direction as the axial direction of the sheave 30 and is coaxial with the pin housing hole 38 so that the pin housing hole 38 and the other end surface in the axial direction of the sheave 30 The sheave 30 is formed so as to communicate.

  The protruding portion of the first pin 36 is stored in the pin storage hole 38. Then, the second pin 37 is inserted into the pin housing hole 38 with the second inclined surface 37a directed toward one end in the axial direction. Thereby, the 2nd inclined surface 37a contacts the 1st inclined surface 36a, and the 1st pin 36 and the 2nd pin 37 will be in a surface contact state.

  Then, the push-in bolt 40 screwed to the female screw portion 39 is tightened. As a result, the second pin 37 slides on the first inclined surface 36a of the first pin 36 and is displaced toward the disk portion 22 side, and is displaced to the left side in FIG. Touch the inner wall. When the tightening amount of the push-in bolt 40 is increased, the second pin 37 is displaced to the left side in FIG. 3 while being displaced to the disk portion 22 side, and the sheave 30 is displaced to the left side in FIG. That is, the sheave 30 rotates to one side in the rotation direction. When the first pin 36 contacts the inner wall surface of the pin housing hole 38, further rotation of the sheave 30 is prevented. Therefore, the tightening of the push bolt 40 is stopped, the nut 41 is fastened, and the push bolt 40 is fixed. As a result, the second pin 37 is fixed in surface contact with the first inclined surface 36 a of the first pin 36 and in line contact with the inner wall surface of the pin housing hole 38.

  In the hoisting machine 10 configured as described above, the stator coil 14 is supplied with power from an external power source, and a rotating magnetic field is applied around the magnet 24 of the rotor 20. Thereby, the rotor 20 is rotationally driven. Then, the rotational torque of the rotor 20 in the left direction in FIG. 3 is transmitted from the first pin 36 to the sheave 30 via the second pin 37, and the sheave 30 rotates integrally with the rotor 20. Further, the rotational torque of the rotor 20 in the right direction in FIG. 3 is transmitted from the first pin 36 to the sheave 30, and the sheave 30 rotates integrally with the rotor 20. Thus, the forward and reverse torques of the rotor 20 are transmitted to the sheave 30 via the torque transmission mechanism including the first pin 36 and the second pin 37.

Next, a method for replacing the sheave 30 will be described.
First, the nut 41 is loosened, the push-in bolt 40 is loosened, and the second pin 37 is unlocked. Next, the mounting bolt 33 is removed, and the existing sheave 30 is removed from the disk portion 22. Next, the new sheave 30 is shrink-fitted and fixed to the sheave holding portion 22 a, and the new sheave 30 is fastened and fixed to the disk portion 22 by the mounting bolt 33. At this time, the protruding portion of the first pin 36 is housed in the pin housing hole 38. Next, the second pin 37 is inserted into the pin accommodation hole 38 with the second inclined surface 37 a facing the first pin 36. Then, the push bolt 40 is screwed onto the female thread portion 39, and the push bolt 40 is tightened with the set tightening torque, and then the nut 41 is tightened to complete the installation of the new sheave 30.

  According to the first embodiment, the simultaneous machining of the reamer holes on the disk portion 22 and the sheave 30 at the time of replacement of the sheave 30 at the installation site is not necessary, and the sheave 30 is a single part. The car 30 can be easily replaced.

  The first pin 36 is press-fitted and held in the reamer hole 35 with the first inclined surface 36a directed in the rotation direction and the first inclined surface 36a side protruding. The second pin 37 housed in the pin housing hole 38 is pushed in by the push bolt 40 so as to be in surface contact with the first inclined surface 36 a of the first pin 36 and in contact with the inner wall surface of the pin housing hole 38. The first pin 36 is in contact with the inner wall surface of the pin housing hole 38. Thereby, the torque of the forward rotation and the reverse rotation of the rotor 20 is transmitted to the sheave 30 without deviation, and there is no rotation deviation of the sheave 30 with respect to the rotor 20.

Embodiment 2. FIG.
4 is a cross-sectional view showing a main part of a hoisting machine to which a rotating body according to Embodiment 2 of the present invention is applied.

  In FIG. 4, two reamer holes 35 are formed on the same circumference centered on the axis of the disk portion 22 so as to be spaced apart in the rotational direction. A pin housing hole 38 and a female screw portion 39 are formed in the sheave 30 so as to correspond to each of the reamer holes 35. The first pin 36 is inserted into one reamer hole 35 with the first inclined surface 36a facing one side in the rotational direction, and the first inclined surface 36a is inserted into the other reamer hole 35 toward the other side in the rotational direction. Has been. The protruding portion of the first pin 36 is housed in each pin housing hole 38. Further, the second pin 37 is inserted into each of the pin housing holes 38 so that the second inclined surface 37a is in contact with the first inclined surface 36a, and the push-in bolt 40 is screwed into each of the female screw portions 39. Then, the push-in bolt 40 is tightened with the set tightening torque. Further, the nut 41 is tightened and the push-in bolt 40 is fixed.

In the torque transmission mechanism on the left side in FIG. 4, the second pin 37 slides on the first inclined surface 36 a of the first pin 36 and is displaced toward the disk portion 22 side by the tightening force of the push-in bolt 40. 4 is displaced to the left in FIG. 4 and finally comes into contact with the inner wall surface of the pin housing hole 38. In the torque transmission mechanism on the right side in FIG. 4, the second pin 37 slides on the first inclined surface 36 a of the first pin 36 by the tightening force of the push-in bolt 40 and is displaced toward the disk portion 22 side. However, it is displaced to the right in FIG. 4 and finally comes into contact with the inner wall surface of the pin housing hole 38.
Other configurations are the same as those in the first embodiment.

  In the second embodiment, in FIG. 4, the rotational torque of the rotor 20 in the left direction is transmitted from the first pin 36 of the left torque transmission mechanism to the sheave 30 via the second pin 37. In FIG. 4, the rotational torque of the rotor 20 in the right direction is transmitted from the first pin 36 of the right torque transmission mechanism to the sheave 30 via the second pin 37. Therefore, also in the second embodiment, the forward and reverse torques of the rotor 20 are transmitted to the sheave 30 without being deviated, and there is no rotational deviation of the sheave 30 with respect to the rotor 20.

  Also in the second embodiment, simultaneous machining of the reamer holes in the disk portion 22 and the sheave 30 at the time of exchanging the sheave 30 at the installation site becomes unnecessary, and the sheave 30 is a single part. The sheave 30 can be easily replaced.

  According to the second embodiment, the forward rotation torque and the reverse rotation torque of the rotor 20 can be transmitted to the sheave 30 without shifting even if the first pin 36 and the inner wall surface of the pin housing hole 38 do not contact each other. it can. Therefore, a plurality of torque transmission mechanisms can be easily provided.

Embodiment 3 FIG.
5 is a cross-sectional view showing a main part of a hoisting machine to which a rotating body according to Embodiment 3 of the present invention is applied.

  In FIG. 5, four reamer holes 35 are formed on the same circumference centering on the axis of the disk portion 22 and spaced apart from each other in the rotational direction. A pin housing hole 38 and a female screw portion 39 are formed in the sheave 30 so as to correspond to each of the reamer holes 35. The first pin 36 is inserted into the first and third reamer holes 35 from the left side with the first inclined surface 36a facing one side in the rotational direction, and the first inclined to the second and fourth reamer holes 35 from the left side. The surface 36a is inserted toward the other side in the rotation direction. The protruding portion of the first pin 36 is housed in each pin housing hole 38. Further, the second pin 37 is inserted into each of the pin housing holes 38 so that the second inclined surface 37a is in contact with the first inclined surface 36a, and the push-in bolt 40 is screwed into each of the female screw portions 39. Then, the push-in bolt 40 is tightened with the set tightening torque. Further, the nut 41 is tightened and the push-in bolt 40 is fixed.

In the first and third torque transmission mechanisms from the left side in FIG. 5, the second pin 37 slides on the first inclined surface 36 a of the first pin 36 by the tightening force of the push-in bolt 40, and the disk portion. While displacing to the 22 side, it is displaced to the left in FIG. 5 and finally comes into contact with the inner wall surface of the pin housing hole 38. In the second and fourth torque transmission mechanisms from the left side in FIG. 5, the second pin 37 slides on the first inclined surface 36 a of the first pin 36 by the tightening force of the push-in bolt 40. While displacing to the disk portion 22 side, it is displaced to the right side in FIG.
Other configurations are the same as those in the first embodiment.

  In the third embodiment, the rotational torque of the rotor 20 in the left direction in FIG. 5 is transmitted to the sheave 30 from the first pin 36 and the second pin 37 of the first and third torque transmission mechanisms from the left side. Is done. In FIG. 5, the rotational torque of the rotor 20 in the right direction is transmitted to the sheave 30 from the first pin 36 and the second pin 37 of the second and fourth torque transmission mechanisms from the left side. Therefore, also in the third embodiment, the forward rotation torque and the reverse rotation torque of the rotor 20 are transmitted to the sheave 30 without deviation, and there is no rotation deviation of the sheave 30 with respect to the rotor 20.

  Also in the third embodiment, simultaneous machining of the reamer holes in the disk portion 22 and the sheave 30 at the time of exchanging the sheave 30 at the installation site is not necessary, and the sheave 30 is one part. The sheave 30 can be easily replaced.

  According to the third embodiment, since there are four sets of torque transmission mechanisms constituted by the first pin 36 and the second pin 37, a larger rotational torque of the rotor 20 than in the first embodiment is obtained. It can be transmitted to the sheave 30.

In each of the above-described embodiments, the case where the drive shaft of the rotating body is an output shaft that does not decelerate the rotation of the hoisting machine has been described. It may be an output shaft that is decelerating.
Moreover, although each said embodiment has demonstrated the rotary body with which the sheave was attached to the output shaft of the hoisting machine, a rotary body is not limited to this, A driven wheel is coaxial with a drive shaft, And what is necessary is just to be attached so that rotation is possible, for example, a pulley may be sufficient.

  22 disk portion (drive shaft), 30 sheave (driven wheel), 33 mounting bolt, 35 reamer hole, 36 first pin, 36a first inclined surface, 37 second pin, 37a second inclined surface, 38 pin storage hole , 39 Female thread, 40 Push-in bolt.

Claims (3)

In a rotating body having a drive shaft and a driven wheel that is configured of one part, is coaxially mounted on the drive shaft and is rotatably mounted.
With the hole direction as the axial direction of the drive shaft, a reamer hole formed in one axial end surface of the drive shaft;
The outer peripheral surface is a cylindrical surface, and one end surface is formed into a columnar shape having a first inclined surface intersecting a plane orthogonal to the axis, the first inclined surface is directed in the rotation direction of the drive shaft, and the first A first pin that is inserted into the reamer hole so as to project an inclined surface and is held by the drive shaft;
A pin housing hole that is larger in diameter than the reamer hole and that is formed on the other axial end surface of the driven wheel with the hole direction as the axial direction of the driven wheel, and in which the protruding portion of the first pin is stored;
A female thread portion having a diameter larger than that of the pin housing hole and coaxial with the pin housing hole, and communicating with one end side in the axial direction of the driven wheel and the pin housing hole;
The outer peripheral surface is a cylindrical surface, the one end surface is a plane orthogonal to the axis, and the other end surface is formed as a second inclined surface having the same inclination angle as the first inclined surface. A second pin disposed in the pin receiving hole so that the second inclined surface is in contact with the first inclined surface,
A pushing bolt screwed to the female thread portion to press the second pin against the first pin;
A rotating body comprising: a mounting bolt that fastens and fixes the driven wheel to the drive shaft. The reamer holes are formed on the drive shaft so as to be 2n apart from each other in the rotational direction (where n is an integer of 1 or more),
The first pin is inserted into each of the n reamer holes with the first inclined surface directed toward one side in the rotational direction of the drive shaft, and the first inclined portion is inserted into each of the remaining n reamer holes. The surface is inserted toward the other side of the rotation direction of the drive shaft,
The pin housing hole and the female screw portion are formed on the driven wheel so as to correspond to each of the reamer holes,
The second pin is disposed in each of the pin accommodation holes;
The rotating body according to claim 1, wherein the push-in bolt is screwed into each of the female screw portions to press the second pin against the first pin.   The rotating body according to claim 1 or 2, wherein the drive shaft is an output shaft of an elevator hoist and the driven wheel is a sheave.

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