JP5590471B2 - Hoisting machine and elevator - Google Patents

Description

  The present invention relates to a hoisting machine for raising and lowering a car and an elevator using the hoisting machine.

  In recent years, elevators using large hoisting machines are installed in high-rise buildings. A large hoisting machine is disposed in a machine room provided at the top of a hoistway in an elevator. Therefore, a large space for arranging a large hoisting machine is required in the machine room of the elevator.

  Further, in order to effectively utilize the floor area of a high-rise building, it is required to reduce the size of the elevator machine room installed in the high-rise building. In order to reduce the size of the machine room, it is essential to reduce the size of the hoist used for the elevator.

  Conventionally, a hoisting machine in which a sheave and a brake disk are integrally formed by casting has been proposed (see Patent Document 1). In the technique described in Patent Document 1, the brake disc is integrated into a sheave as a cast product, thereby reducing the size of the brake disc in the radial direction and reducing the size of the hoisting machine.

  A typical hoisting machine has a motor disposed at one end in the axial direction. And the brake disk is arrange | positioned on the opposite side to the motor of the axial direction in a sheave. Therefore, the brake for braking the brake disc is also arranged on the side opposite to the motor. Further, in a general hoisting machine, since the brake is large, the end of the brake protrudes outward in the axial direction of the hoisting machine from the tip of the drive shaft attached to the motor. Therefore, the total length in the axial direction of the hoisting machine is the length from the end of the motor to the end of the brake.

JP 2002-20064 A

  However, in the technique described in Patent Document 1, the dimension of the hoisting machine in the radial direction can be reduced by integrating the sheave and the brake disk by casting, but the axial direction of the hoisting machine It was not possible to reduce the dimensions to. Therefore, the dimension of the machine room of the elevator in which the hoisting machine is arranged cannot be reduced.

  Further, in a large hoisting machine, the sheave and the brake disc are large, and it has been difficult to manufacture the sheave and the brake disc integrally. Therefore, it was necessary to manufacture the hoisting machine using the sheave and the brake disc as separate parts. In this case, a brake disc is incorporated into the sheave having the flange portion from the side opposite to the motor in the flange portion and fixed using bolts. As a result, the brake disc is disposed at a position away from the motor, and the total axial length of the hoisting machine is long.

  An object of the present invention is to provide a hoisting machine capable of reducing the size of the elevator's machine room by reducing the axial dimension of the hoisting machine, and an elevator using the hoisting machine in consideration of the above problems. It is to provide.

In order to solve the above problems and achieve the object of the present invention, a hoisting machine of the present invention includes a sheave having a drive shaft, a bearing base that rotatably supports the drive shaft and the sheave, and a drive in the sheave. A motor that is disposed at one end of the shaft in the axial direction and that rotates the sheave via the drive shaft, a flange that is provided at the end of the sheave opposite to the motor, and a facing surface that faces the motor at the flange And a brake disc that is fixed to the sheave via a fixing mechanism and rotates in conjunction with the sheave, and a brake that brakes the rotation of the brake disc with the brake disc interposed therebetween. The fixing mechanism includes a fitting portion formed on the opposing surface of the flange portion and a through hole formed in the brake disc and fitted into the fitting portion. The brake disc is attached to the sheave by an interference fit. The thick portion is fixed around the through hole of the brake disc, and the radial length of the thick portion is 1/5 or more of the axial length of the thick portion.

  The elevator of the present invention includes a car that moves up and down in the hoistway, a counterweight connected to the car via a rope, and a hoisting machine that lifts and lowers the car by winding the rope. . The hoisting machine is constituted by the hoisting machine described above.

  According to the hoisting machine of the present invention, the brake disc can be brought close to the axial center of the sheave by disposing the brake disc in contact with the opposing surface of the flange portion facing the motor. As a result, since the axial dimension of the hoisting machine can be reduced, the dimension of the machine room of the elevator in which the hoisting machine is arranged can be reduced.

It is a schematic block diagram which shows the structure of the elevator concerning the 1st Example of this invention. It is a side view which shows the structure of the winding machine concerning the 1st Example of this invention. It is a side view which shows the principal part of the brake disc in the winding machine concerning the 1st Example of this invention. FIG. 4A is a side view showing a process of incorporating the brake disc into the sheave in the hoist according to the first embodiment of the present invention, and FIG. 4A is a side view showing a state before the brake disc is fixed to the sheave. FIG. 4 and FIG. 4B are side views showing a state in which the brake disc is fixed to the sheave. It is a side view which shows the difference of the dimension of the axial direction in the winding machine concerning the 1st Example of this invention, and the dimension of the axial direction in the conventional winding machine. FIG. 5A is a side view showing a conventional hoisting machine, and FIG. 5B is a side view showing the hoisting machine according to the first embodiment of the present invention. 6A is a front view showing a main part of a fixing mechanism in a hoist according to a second embodiment of the present invention, FIG. 6A is a front view showing a sheave before a brake disk is fixed, and FIG. 6B is a brake. It is a front view which shows a disc. It is a front view which shows the state with which the brake disc in the winding machine concerning the 2nd Example of this invention was fixed to the sheave. It is a front view which shows the principal part of the fixing mechanism in the winding machine concerning the 3rd Example of this invention, FIG. 8A is a front view which shows the state before a brake disk is fixed to a sheave, FIG. 8B. FIG. 3 is a front view showing a state in which a brake disc is fixed to a sheave. It is a side view which shows the structure of the winding machine concerning the 4th Example of this invention.

Hereinafter, an embodiment of an elevator using the hoisting machine and the hoisting machine of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the common member in each figure. The present invention is not limited to the following form.
The description will be given in the following order.
1. 1. First embodiment 1-1. Example of elevator configuration 1-2. Configuration example of hoisting machine 1-3. Brake disc fixing method 1-4. Comparison with conventional hoisting machine 2. Second embodiment example 3. FIG. 3. Third embodiment example Fourth embodiment

1. First embodiment example 1-1. First, a configuration of an elevator according to a first embodiment of the present invention (hereinafter referred to as “this example”) will be described with reference to FIG.
FIG. 1 is a schematic configuration diagram illustrating a configuration example of an elevator according to the present example.

  As shown in FIG. 1, the elevator 1 of the present invention includes a hoistway 110, a car 120, a rope 130, a counterweight 140, and a hoisting machine 100. The hoistway 110 is formed in a building structure, and a machine room 160 is provided on the top thereof. The car 120 is connected to the counterweight 140 via the rope 130 and moves up and down in the hoistway 110. And the hoisting machine 100 is arrange | positioned at the machine room 160, and raises / lowers the passenger car 120 by winding the rope 130. Further, in the vicinity of the hoisting machine 100, a warping wheel 150 on which the rope 130 is mounted is provided.

1-2. Configuration Example of Hoisting Machine Next, a configuration example of the hoisting machine according to the present example will be described with reference to FIGS.
FIG. 2 is a side view showing the configuration of the hoisting machine of this example.

[Hoisting machine]
As shown in FIG. 2, the hoisting machine 100 of this example includes a motor 10, a sheave 12, a brake disk 13, and a bearing stand 15. The sheave 12 has a drive shaft 11. Further, the hoisting machine 100 is provided with a brake 14 and a machine base 22.

[Motor and drive shaft]
The motor 10 and the drive shaft 11 will be described.
The motor 10 is installed on the machine base 22. One end of a drive shaft 11 fixed to the sheave 12 is rotatably attached to the motor 10. The drive shaft 11 is rotatably supported by a bearing base 15. When the motor 10 is driven, the drive shaft 11 rotates, and the sheave 12 rotates in conjunction with the rotation of the drive shaft 11.

[Bearing base]
The bearing base 15 includes a motor side bearing base 16 and a brake disk side bearing base 17 and is supported by a machine base 22. The motor side bearing stand 16 supports the end portion on the motor 10 side in the axial direction of the drive shaft 11. Further, the brake disk side bearing stand 17 supports the brake 14 and the end on the side opposite to the motor 10 in the axial direction of the drive shaft 11.
In this example, the drive shaft 11 is supported by the two bearing bases of the motor side bearing base 16 and the brake disk side bearing base 17, but the drive shaft 11 may be supported by one bearing base. .

[Shelves]
The sheave 12 is formed in a substantially cylindrical shape, and a through hole (not shown) is formed at the center of the shaft. The diameter of the through hole is equal to the size of the outer diameter of the drive shaft 11. The drive shaft 11 passes through the through hole of the sheave 12 and is fixed to the sheave 12.

  A winding portion 18 around which the rope 130 is wound is formed on the side surface portion of the sheave 12. The winding portion 18 has a plurality of grooves 18a around which the rope 130 is wound. As the sheave 12 rotates, the groove 18 a of the winding portion 18 winds the rope 130. Moreover, the protrusion part 19 and the flange part 20 are provided in the both ends in the axial direction of the sheave 12.

  The protrusion 19 is disposed at one end of the sheave 12 in the axial direction. The protruding portion 19 protrudes outward in the radial direction of the sheave 12 and is formed with a diameter larger than the outer diameter of the winding portion 18 of the sheave 12. Thereby, it can prevent that the rope 130 wound around the winding part 18 comes off from the protrusion part 19 side.

  The flange portion 20 is disposed at the other end portion in the axial direction of the sheave 12. The flange portion 20 protrudes outward in the radial direction of the sheave 12. The outer diameter of the flange portion 20 is formed larger than the outer diameter of the protruding portion 19. A fitting portion 21 is provided between the flange portion 20 and the winding portion 18 of the sheave 12.

  The brake disc 13 is fixed to the fitting portion 21. The outer diameter of the fitting part 21 is formed larger than the diameter of the protruding part 19. Further, the axial length of the fitting portion 21 is formed to be the same as or slightly larger than the axial length of the brake disc 13.

[brake disc]
Next, the brake disc 13 will be described with reference to FIGS.
FIG. 3 is a side view showing the main part of the brake disk in the hoisting machine of this example.

  As shown in FIG. 2, the brake disc 13 abuts against the facing surface 20 a of the flange portion 20 facing the motor 10 and is fixed to the fitting portion 21. As a result, the brake disc 13 is also rotated in conjunction with the sheave 12 rotated by the drive of the motor 10.

  Next, details of the brake disk 13 will be described. As shown in FIG. 3, the brake disc 13 is formed in a substantially disc shape. The brake disc 13 has a through hole 13a, a thick portion 13b, and a thinned portion 13c.

  The through hole 13a of the brake disk 13 is formed along the axial direction of the brake disk 13 so as to connect the one surface 13d of the brake disk 13 to the other surface 13e. The through hole 13 a is disposed at the radial center of the brake disc 13. The diameter of the through hole 13a is smaller than the outer diameter of the fitting portion 21 in order to fix the brake disc 13 to the sheave 12 by shrink fitting or the like. A thick portion 13b is formed around the through hole 13a.

  The thick portion 13b is disposed so as to surround the periphery of the through hole 13a. The length X in the radial direction of the thick portion 13b is 1/5 or more of the length Y in the axial direction of the thick portion 13b.

  A thinned portion 13c is formed on the radially outer side of the thick portion 13b. The lightening portion 13c is provided on one surface 13d and the other surface 13e of the brake disc 13. The thinned portion 13c on the one surface 13d side is formed to be recessed from the one surface 13d side toward the other surface 13e side. Further, the thinned portion 13c on the other surface 13e side is formed to be recessed from the other surface 13e side toward the one surface 13d side. By providing the brake disk 13 with the lightening portion 13c, the weight of the brake disk 13 can be reduced.

[brake]
As shown in FIG. 2, the brake 14 is disposed on the brake disk 13 side provided on the opposite side of the motor 10 and is supported by the brake disk side bearing base 17. The brake 14 comes into contact with the two surfaces 13d and 13e of the brake disc 13 so as to sandwich the brake disc 13 and brakes the rotation of the brake disc 13. Thereby, the rotation of the sheave 12 linked to the drive shaft 11 can be braked and the hoisting operation of the rope 130 can be adjusted.

[How to fix the brake disc]
Next, a method for fixing the brake disc 13 will be described.
FIG. 4A is a side view showing a state before the brake disc is assembled and fixed to the sheave, and FIG. 4B is a side view showing a state where the brake disc is fixed to the sheave.

  A mechanism for fixing the brake disc 13 (hereinafter referred to as “fixing mechanism”) includes a fitting portion 21 and a through hole 13 a of the brake disc 13 that fits the fitting portion 21. In this example, in order to fix the brake disc 13 to the sheave 12, an interference fit such as shrink fitting or press fitting is performed.

  For example, when performing shrink fitting, the brake disc 13 is first heated. As a result, the brake disc 13 expands, and the diameter of the through hole 13a increases. Next, as shown in FIG. 4A, the brake disc 13 is inserted from the protruding portion 19 side of the sheave 12. Since the diameter of the through hole 13a of the brake disk 13 is larger than the diameter of the protruding portion 19 and the diameter of the winding portion 18, the brake disk 13 is not interfered with the protruding portion 19 and the winding portion 18, and the sheave It can be inserted in the other 12 axial directions.

  Further, the through hole 13 a of the brake disk 13 expands when heated, and the diameter of the through hole 13 a is larger than the outer diameter of the fitting portion 21. Therefore, as shown in FIG. 4B, the brake disc 13 can be inserted to a position where it comes into contact with the facing surface 20 a facing the motor 10 in the flange portion 20. Further, the brake disk 13 can be positioned by bringing the brake disk 13 into contact with the flange portion 20.

  Next, when the position of the brake disc 13 in the axial direction of the sheave 12 is adjusted, the brake disc 13 is cooled and the brake disc 13 is contracted. When the brake disc 13 contracts, the diameter of the through hole 13a of the brake disc 13 also contracts, and the through hole 13a of the brake disc 13 and the fitting portion 21 are fitted. Thereby, the brake disc 13 is fixed to the sheave 12.

  Moreover, in this example, since the thick part 13b is provided in the brake disc 13, the deformation | transformation of the curvature etc. of the brake disc 13 which arises when an interference fit is carried out can be prevented.

[Comparison with conventional hoisting machines]
The hoisting machine of this example and the conventional hoisting machine will be described with reference to FIG.
FIG. 5 is a side view showing the difference between the axial dimension of the hoisting machine of this example and the axial dimension of the conventional hoisting machine. FIG. 5A is a side view showing a conventional hoisting machine, and FIG. 5B is a side view showing the hoisting machine of this example. In addition, the end of the motor 10 of the hoisting machine 100 of this example and the end of the motor 510 of the conventional hoisting machine 500 are shown together.

  The total length in the axial direction of the hoisting machines 100 and 500 is from the end of the motors 10 and 510 to the end of the brakes 14 and 514. The total length of the conventional hoisting machine 500 is L1, and the hoisting machine 100 of this example. The total length of L2 is L2. The conventional hoisting machine 500 is assembled by bringing the brake disc 513 into contact with the surface of the flange portion 520 opposite to the motor 510 and fixing the brake disc 513 to the flange portion 520 with bolts 518, for example.

  On the other hand, in the hoisting machine 100 of the present example, the brake disc 13 is assembled from the protruding portion 19 side of the sheave 12, and the brake disc 13 is fixed to the flange portion 20 by abutting against the facing surface 20a facing the motor 10. Yes. The positional relationship between the brake disc 13 and the flange portion 20 in the hoisting machine 100 of this example is opposite to the positions of the brake disc 513 and the flange portion 520 in the conventional hoisting machine 500.

  Here, considering the center N in the axial direction of the sheaves 12, 512 as a reference, the position where the brake disk 13 of the hoisting machine 100 of this example is arranged is the position where the brake disk 513 of the conventional hoisting machine 500 is arranged. Compared to the position where the sheave 12 is located, the sheave 12 is closer to the axial center N side. That is, by arranging the brake disc 13 close to the center N of the sheave 12, the position of the brake 14 that brakes the brake disc 13 approaches the center N.

  Therefore, the end of the brake 14 of the hoisting machine 100 of this example is closer to the center N by the length M than the end of the brake 514 of the conventional hoisting machine 500. As a result, the total length L2 in the axial direction of the hoisting machine 100 of this example can be made smaller by the length M than the total length L1 in the axial direction of the conventional hoisting machine 500. Thereby, size reduction of the axial direction of a hoisting machine can be achieved, and the space required at the time of the maintenance of a hoisting machine can be ensured easily. Further, the machine room 160 in which the hoisting machine 100 is installed can be reduced.

  Further, in the conventional hoisting machine 500, the brake disc 513 is fixed to the sheave 512 with the bolt 518. A plurality of the bolts 518 are arranged along the circumferential direction of the brake disc 513. Therefore, it is necessary to secure a space for disposing the bolt 518 on the brake disc 513, and the outer diameter of the flange portion 520 is increased.

  On the other hand, in the hoisting machine 100 of this example, the brake disc 13 is fixed to the fitting portion 21 of the sheave 12 by an interference fit such as shrink fitting or press fitting. Therefore, an increase in the outer diameter of the flange portion 20 can be suppressed, and the bolts 518 can be reduced. As a result, the material cost of the hoisting machine 100 can be reduced. Moreover, since the bolt 518 is not required to be tightened, the work load can be reduced.

2. Second Embodiment Next, a second embodiment of the hoist according to the present invention will be described with reference to FIGS.
FIG. 6 is a front view showing a main part of the fixing mechanism in the hoist according to the second embodiment of the present invention. FIG. 6A is a front view showing the sheave before the brake disc is fixed, and FIG. 6B is a front view showing the brake disc fixed to the sheave.
FIG. 7 is a front view showing a state in which the brake disc in the hoist according to the second embodiment of the present invention is fixed to the sheave.

  The hoisting machine according to the second embodiment differs from the hoisting machine 100 according to the first embodiment in a fixing mechanism for fixing the brake disk to the sheave. Therefore, here, the matters related to the fixing mechanism for fixing the brake disc to the sheave will be described, and the portions common to the hoisting machine 100 are denoted by the same reference numerals, and redundant description will be omitted.

  As shown in FIG. 6A, the drive shaft 11 passes through the sheave 212. The sheave 212 includes a winding portion (not shown) provided on the side surface of the sheave 212, a projecting portion 219, a fitting portion 221, and a flange portion 220. The fitting portion 221 has a recess 221a.

  The brake disk 213 is formed in a substantially disk shape. As shown in FIG. 6B, the brake disc 213 has a through hole 213a. The diameter of the through hole 213 a is formed in accordance with the diameter of the fitting portion 221. The brake disc 213 is provided with a groove 214 that is recessed from the edge of the through hole 213a toward the outside in the radial direction. The groove 214 opposes the recess 221a of the fitting portion 221 when the brake disc 213 is attached to the sheave 212.

  Next, a method for fixing the brake disc 213 in the second embodiment will be described. First, as in the first embodiment, the brake disc 213 is assembled from the protruding portion 219 side of the sheave 212. Thereafter, the brake disc 213 is brought into contact with the facing surface 220a of the flange portion 220 facing the motor side. At that time, the groove portion 214 of the brake disk 213 and the recess portion 221a of the fitting portion 221 face each other.

  Then, as shown in FIG. 7, a fixing groove 222 (key groove) is formed by the recess 221 a and the groove 214. Next, the fixing member 223 (key) is embedded in the fixing groove 222. As a result, the through hole 213a of the brake disk 213 and the fitting portion 221 are fixed, and the brake disk 213 is fixed to the sheave 212.

  The fixing mechanism of the second embodiment includes a recess 221a formed in the fitting portion 221, a groove 214 provided on the brake disk 213 and disposed opposite to the recess 221a, and the recess 221a and the groove 214. It is comprised from the fixing member 223 embedded in.

  The brake disk 213 and the sheave 212 may be fixed by combining a fixing method such as shrink fitting or press fitting, and a fixing mechanism using the fixing groove 222 and the fixing member 223. Accordingly, the brake disc 213 can be firmly fixed to the sheave 212, and the brake disc 213 can be prevented from being detached from the sheave 212, so that the safety of the hoisting machine is improved.

  The other configuration is the same as that of the hoisting machine 100 according to the first embodiment described above, and a description thereof will be omitted. Also with the hoist according to the second embodiment having such a configuration, the same operations and effects as those of the hoist 100 according to the above-described first embodiment can be obtained.

  In the hoist according to the second embodiment, one fixing groove 222 including the recess 221a and the groove 214 is provided, but the present invention is not limited to this. Two or more fixing grooves 222 may be formed, and the fixing member 223 may be embedded in each of the fixing grooves 222.

3. Third Embodiment Next, a third embodiment of the hoist according to the present invention will be described with reference to FIG.
FIG. 8A is a front view showing the sheave and the brake disc before the brake disc is assembled and fixed to the sheave, and FIG. 8B is a front view showing a state in which the brake disc is assembled and fixed to the sheave.

  The hoisting machine according to the third embodiment is different from the hoisting machine 100 according to the first embodiment in a fixing mechanism for fixing the brake disk to the sheave. Therefore, here, the matters related to the fixing mechanism for fixing the brake disc to the sheave will be described, and the portions common to the hoisting machine 100 are denoted by the same reference numerals, and redundant description will be omitted.

  A sheave and a brake disc used in the hoist according to the third embodiment are shown in FIG. 8A. The brake disk 313 has the same configuration as the brake disk 213 in the second embodiment. Therefore, the description of the brake disk 313 is omitted here.

  As shown in FIG. 8A, the drive shaft 11 passes through the sheave 312. The sheave 312 includes a winding portion (not shown) provided on the side surface of the sheave 312, a protruding portion 319, a fitting portion 321, and a flange portion 320. In addition, the fitting portion 321 is provided with a protruding portion 321a.

  Next, a method for fixing the brake disc 313 in the third embodiment will be described. First, as in the first embodiment, the brake disc 313 is assembled from the protruding portion 319 side of the sheave 312. Then, the brake disk 313 is brought into contact with the facing surface 320a of the flange portion 320 facing the motor side. At that time, as shown in FIG. 8B, the groove 314 of the brake disk 313 and the protrusion 321a of the fitting portion 321 are engaged. As a result, the through hole 313 a of the brake disk 313 and the fitting portion 321 are fitted, and the brake disk 313 is fixed to the sheave 312. As a result, the sheave 312 and the brake disc 313 can be easily fixed.

  The fixing mechanism of the third embodiment includes a protrusion 321a formed on the fitting portion 321 and a groove 314 provided on the brake disk 313 and engaged with the protrusion 321a.

  The brake disk 313 and the sheave 312 are fixed by combining a fixing method such as shrink fitting or press fitting, and a fixing mechanism including the groove 314 and the protrusion 321a according to the third embodiment. Also good. As a result, the brake disc 313 can be firmly fixed to the sheave 312 and the brake disc 313 can be prevented from being detached from the sheave 312 and the safety of the hoisting machine is improved.

  The other configuration is the same as that of the hoisting machine 100 according to the first embodiment described above, and a description thereof will be omitted. Also with the hoist according to the third embodiment having such a configuration, the same operations and effects as those of the hoist 100 according to the above-described first embodiment can be obtained.

  In the hoist according to the third embodiment, one protrusion 321a and one groove 314 are provided. However, the present invention is not limited to this, and two or more protrusions 321a and two grooves 314 are provided. May be.

4). Fourth Embodiment Next, a fourth embodiment of the hoist according to the present invention will be described with reference to FIG.
FIG. 9 is a side view showing the configuration of the hoist according to the fourth embodiment of the present invention.

  The hoisting machine 400 according to the fourth embodiment is different from the hoisting machine 100 according to the first embodiment in a fixing mechanism for fixing the brake disk to the sheave. Therefore, here, the matters related to the fixing mechanism for fixing the brake disc to the sheave will be described, and the portions common to the hoisting machine 100 are denoted by the same reference numerals, and redundant description will be omitted.

  First, a method for fixing the brake disk 413 in the fourth embodiment will be described. As shown in FIG. 9, the brake disc 413 is incorporated from the protruding portion 19 side of the sheave 412 as in the first embodiment. Thereafter, the brake disc 413 is brought into contact with the facing surface 420a of the flange portion 420 facing the motor 10.

  Then, a bolt 423 serving as a fixing mechanism according to the fourth embodiment is inserted from the opposite side of the motor 10 in the flange portion 420 to fix the brake disk 413 and the sheave 412. As a result, even if the brake disc 413 and the sheave 412 are large, they can be easily fixed. The brake disk 413 and the sheave 412 may be fixed by inserting the bolt 423 from the surface 413d of the brake disk 413 facing the motor 10 toward the flange portion 420.

  The other configuration is the same as that of the hoisting machine 100 according to the first embodiment described above, and a description thereof will be omitted. Also with the hoisting machine 400 having such a configuration, the same operations and effects as those of the hoisting machine 100 according to the first embodiment described above can be obtained.

  The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention described in the claims.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 10 ... Motor, 11 ... Drive shaft, 12,212,312,412 ... Sheave, 13,213,313,413 ... Brake disc, 13a, 213a ...・ Through hole, 13b ・ ・ ・ Thick part, 13c ・ ・ ・ Thinned part, 14 ・ ・ ・ Brake, 15 ・ ・ ・ Bearing base, 16 ... Motor side bearing base, 17 ... Brake disc side bearing Base, 18 ... winding part, 19, 219, 319 ... projecting part, 20, 220, 320, 420 ... flange part, 20a, 220a, 320a ... opposing surface, 21, 221, 321 ... Fitting part, 22 ... Machine base, 100,400 ... Hoisting machine, 110 ... Hoistway, 120 ... Ride car, 130 ... Rope, 140 ... Balance weight , 150 ... Warping wheel, 160 ... Machine , 214 ... groove portion, 221a ... recess, 222 ... fixing groove (key groove), 223 ... fixing member (key), 321a ... protrusion, 423 ... Bolt

Claims (5)

A sheave having a drive shaft;
A bearing base that rotatably supports the drive shaft and the sheave;
A motor that is disposed at one end in the axial direction of the drive shaft in the sheave and rotates the sheave via the drive shaft;
A flange portion provided at an end of the sheave opposite to the motor;
A brake disk that contacts the opposite surface of the flange portion facing the motor, is fixed to the sheave via a fixing mechanism, and rotates in conjunction with the sheave;
A brake that brakes rotation of the brake disc across the brake disc ,
The fixing mechanism includes a fitting portion formed on the facing surface of the flange portion and the blur.
Formed in a magnetic disc, and is composed of a through hole that fits into the fitting portion,
The brake disc is fixed to the sheave by an interference fit;
Around the through hole of the brake disc has a thick part,
The hoisting machine in which the length in the radial direction of the thick part is 1/5 or more of the length in the axial direction of the thick part . The fixing mechanism includes a recess formed in the sheave, a groove provided on the brake disk and disposed to face the recess, and a fixing member that fits into the recess and the groove. The hoist according to claim 1. The fixing mechanism is provided on a protrusion formed on the sheave and the brake disc,
The hoisting machine according to claim 1, comprising a groove portion that engages with the protrusion. The hoisting machine according to claim 1, wherein the fixing mechanism includes a bolt that fixes the flange portion and the brake disc. A car that goes up and down in the hoistway,
A counterweight connected to the car via a rope;
A hoisting machine that raises and lowers the car by winding the rope;
Have
The hoisting machine
A sheave having a drive shaft;
A bearing base that rotatably supports the drive shaft and the sheave;
A motor that is disposed at one end in the axial direction of the drive shaft in the sheave and rotates the sheave via the drive shaft;
A flange portion provided at an end of the sheave opposite to the motor;
A brake disk that contacts the opposite surface of the flange portion facing the motor, is fixed to the sheave via a fixing mechanism, and rotates in conjunction with the sheave;
A brake that brakes rotation of the brake disc across the brake disc ,
The fixing mechanism includes a fitting portion formed on the facing surface of the flange portion and the blur.
Formed in a magnetic disc, and is composed of a through hole that fits into the fitting portion,
The brake disc is fixed to the sheave by an interference fit;
Around the through hole of the brake disc has a thick part,
The length of the thick part in the radial direction is 1/5 or more of the length of the thick part in the axial direction .

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