Elevator hoisting machine and elevator

Abstract

The present invention provides an elevator hoisting machine that can output a Z-phase signal using a brake rotation section. [Solution] The elevator hoisting machine comprises a sheave around which the car rope is wound and rotates, a brake that slows the rotation of the sheave, and a first detection device that converts the rotation of the sheave into an electrical signal and outputs a Z-phase signal. The brake comprises a brake rotating part that rotates integrally with the sheave, and a braking part that pressurizes and contacts the brake rotating part. The first detection device comprises a detector fixed to the brake rotating part, and a Z-phase sensor that detects when the detector is in a set position.

Description

Technical Field

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[0001] This specification relates to an elevator hoisting machine and an elevator.

Background Art

[0002] Conventionally, for example, an elevator hoisting machine includes a sheave around which a car rope is wound and rotates, and a detection device that converts the rotation of the sheave into an electrical signal (for example, Patent Document 1). The detection device according to Patent Document 1 outputs an A-phase signal and a B-phase signal, which are pulse signals indicating the rotation direction and rotation amount of the sheave, and a Z-phase signal (index signal) that is one pulse per rotation of the sheave.

[0003] By the way, an elevator hoisting machine includes, for example, a brake that brakes the rotation of the sheave. The brake includes, for example, a brake rotating part that rotates integrally with the sheave, and a braking part that presses against and contacts the brake rotating part (for example, Patent Document 2). And there is a desire to output the Z-phase signal using the brake rotating part.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the problem is to provide an elevator hoisting machine that can output a Z-phase signal using a brake rotating part.

Means for Solving the Problems

[0006] An elevator hoisting machine includes a sheave around which a car rope is wound and rotates, and A brake for slowing the rotation of the aforementioned sheave, The system includes a first detection device that converts the rotation of the sheave into an electrical signal and outputs a Z-phase signal, The aforementioned brake is A brake rotating part that rotates integrally with the aforementioned sheave, It comprises a braking part that pressurizes and contacts the aforementioned brake rotating part, The first detection device is A detector fixed to the aforementioned brake rotation part, The system includes a Z-phase sensor that detects when the detector is located at a set position. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic diagram of an elevator according to one embodiment. [Figure 2] Figure 2 is a front view of the elevator hoisting machine according to the same embodiment. [Figure 3] Figure 3 is a cross-sectional view taken along line III-III in Figure 2. [Figure 4] Figure 4 is an enlarged view of region IV in Figure 2. [Figure 5] Figure 5 is an enlarged view of region V in Figure 3. [Figure 6] Figure 6 is an enlarged cross-sectional view of the main section along line VI-VI in Figure 5. [Figure 7] Figure 7 shows the signal output by the detection device. [Modes for carrying out the invention]

[0008] In each drawing, the dimensions of components may be enlarged or reduced from their actual dimensions for the sake of clarity, and the dimensional ratios between drawings may not be consistent. Furthermore, in each drawing, some components may be omitted for the sake of clarity.

[0009] Terms including ordinal numbers such as "1st," "2nd," etc., are used to describe various components, but these terms are used solely for the purpose of distinguishing one component from others, and the components are not particularly limited by these terms. Furthermore, the number of components including ordinal numbers is not particularly limited; for example, there may be only one. Also, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0010] The following description will explain one embodiment of an elevator and elevator hoisting machine with reference to Figures 1 to 7. Note that the following embodiment is provided as an example to aid in understanding the configuration of the elevator and elevator hoisting machine, and does not limit the configuration of the elevator and elevator hoisting machine.

[0011] As shown in Figure 1, the elevator 1 may include, for example, a car 2 for people (passengers) to ride in, a car rope 3 connected to the car 2, a counterweight 4 connected to the car rope 3, an elevator hoisting machine (hereinafter also simply referred to as "hoisting machine") 10 that drives the car rope 3 to move the car 2 and the counterweight 4 in the vertical direction, a car rail 5 that guides the car 2, a counterweight rail 6 that guides the counterweight 4, and a processing unit 7 that controls each part of the elevator 1.

[0012] In this embodiment, the elevator 1 has a configuration in which the hoisting machine 10 is located inside the hoistway X1, but it is not limited to this configuration. For example, a machine room may be provided above the hoistway X1, and the elevator 1 may have a configuration in which the hoisting machine 10 is located inside the machine room.

[0013] Furthermore, in this embodiment, both ends of the cage rope 3 are fixed to the upper or lower part of the hoistway X1, and the cage rope 3 is wound around the sheave of the cage 2 and the sheave of the counterweight 4, respectively, thereby connecting the cage rope 3 to the cage 2 and the counterweight 4, respectively. However, the configuration is not limited to this. For example, the first end of the cage rope 3 may be fixed to the cage 2, and the second end of the cage rope 3 may be fixed to the counterweight 4.

[0014] As shown in FIGS. 2 and 3, the hoist 10 includes a sheave 11 around which the car rope 3 is wound and rotates, and a brake 12 that brakes the rotation of the sheave 11. Further, the hoist 10 may include, for example, as in the present embodiment, a drive source 13 that rotates the sheave 11, and a base body 14 that is fixed to a housing such as an elevating path X1 or a machine room.

[0015] In FIGS. 2 and 3 (the same applies to FIGS. 4 to 6), the first direction D1 is the first lateral direction D1, the second direction D2 is the second lateral direction D2 that is a lateral direction orthogonal to the first lateral direction D1, and the third direction D3 is the vertical direction D3 that is orthogonal to each of the lateral directions D1 and D2. Here, the direction orthogonal to a specific direction means a direction parallel to a virtual plane orthogonal to the specific direction.

[0016] The drive source 13 may be, for example, an electric motor 13 as in the present embodiment. And the electric motor may include, for example, as in the present embodiment, a stator 13a fixed to the base body 14, a rotor 13b that rotates about an axis 13x extending in the axial direction D1, and a bearing 13c that connects the rotor 13b to the stator 13a so that the rotor 13b can rotate with respect to the stator 13a.

[0017] For example, as in the present embodiment, the stator 13a may include a shaft portion 13d extending in the axial direction D1, the rotor 13b may be formed in a cylindrical shape so as to dispose the shaft portion 13d therein, and the bearing 13c may be disposed between the outer periphery of the shaft portion 13d and the inner periphery of the rotor 13b.

[0018] Further, for example, as in the present embodiment, the stator 13a may include an electromagnetic coil portion 13e that generates a rotating magnetic field, and the rotor 13b may include a magnet portion 13f (for example, a permanent magnet) that receives a force from the rotating magnetic field in order to rotate. That is, for example, as in the present embodiment, the electric motor 13 may be a synchronous motor.

[0019] Furthermore, the brake 12 includes a brake rotating part 12a that rotates together with the sheave 11, and a braking part 12b that pressurizes and contacts the brake rotating part 12a. Alternatively, as in this embodiment, the sheave 11 and the brake rotating part 12a may be fixed to the rotor 13b of the electric motor 13 and thus rotate together. In such a configuration, the axes 13x of the sheave 11, the brake rotating part 12a, and the rotor 13b coincide.

[0020] Furthermore, for example, as in this embodiment, the brake rotating part 12a may be a disc that protrudes radially outward from the rotor 13b of the electric motor 13, and the braking part 12b may brake the sheave 11 by pressing and contacting the side surface 12c of the brake rotating part 12a, thereby generating a frictional force between itself and the brake rotating part 12a. In other words, for example, as in this embodiment, the brake 12 may be a disc type brake.

[0021] Furthermore, the hoisting machine 10 is equipped with detection devices 20 and 30 that convert the rotation of the sheave 11 into an electrical signal. Specifically, as shown in Figures 4 and 5, the hoisting machine 10 is equipped with a first detection device 20 that converts the rotation of the sheave 11 into an electrical signal and outputs a Z-phase signal, and a second detection device 30 that converts the rotation of the sheave 11 into an electrical signal and outputs an A-phase signal and a B-phase signal.

[0022] The second detection device 30 includes a detection rotating part 31 that contacts the brake rotating part 12a so as to rotate in conjunction with the rotation of the brake rotating part 12a, and an A-phase sensor 32 and a B-phase sensor 33 that detect when the detection rotating part 31 has rotated by a set amount. As a result, the second detection device 30 converts the rotation of the sheave 11 into an electrical signal and outputs an A-phase signal and a B-phase signal.

[0023] Therefore, the brake rotation unit 12a can be used to output A-phase signals and B-phase signals. Although not particularly limited, the second detection device 30 may be an incremental encoder that outputs A-phase signals and B-phase signals which are digital pulses (square waves), as in this embodiment.

[0024] The detection rotation unit 31 may, for example, rotate in conjunction with the rotation of the brake rotation unit 12a by contacting the outer circumferential surface 12d of the brake rotation unit 12a, as in this embodiment. However, the configuration is not limited to this, and for example, the detection rotation unit 31 may rotate in conjunction with the rotation of the brake rotation unit 12a by contacting the side surface 12c of the brake rotation unit 12a. Furthermore, the detection rotation unit 31 may be configured to rotate more than one time (for example, multiple times) when the sheave 11 rotates once, as in this embodiment.

[0025] The second detection device 30 may be configured as, for example, an optical encoder. Specifically, for example, the second detection device 30 may be configured as having a disc (slit disk) 34 that rotates integrally with the detection rotating unit 31 and has a slit, and a light-emitting element, and the A-phase sensor 32 and B-phase sensor 33 may be light-receiving elements.

[0026] Furthermore, the second detection device 30 may be configured to be, for example, a magnetic encoder. Specifically, for example, the second detection device 30 may be configured to have a disc 34 that rotates integrally with the detection rotating unit 31 and has a magnetic pole pattern embedded in it, and the A-phase sensor 32 and B-phase sensor 33 may be Hall sensors.

[0027] Furthermore, the second detection device 30 may include, for example, a device body 35 that houses the A-phase sensor 32, the B-phase sensor 33, and the disc 34, as in this embodiment. The device body 35 may be fixed to the base body 14 by being fixed to the bracket 16 with the first fixing means 15, as in this embodiment.

[0028] The first detection device 20 includes a detector 21 fixed to the brake rotating section 12a and a Z-phase sensor 22 that detects when the detector 21 is in a set position. Thus, the first detection device 20 converts the rotation of the sheave 11 into an electrical signal and outputs a Z-phase signal. Therefore, the Z-phase signal can be output using the brake rotating section 12a.

[0029] Furthermore, as in this embodiment, the detector 21 may be made of a metal material, and the Z-phase sensor 22 may be a proximity sensor that non-contactually detects when the detector 21 approaches and is located within a set area. However, the configuration is not limited to this, and for example, the detector 21 may be made of a reflective material, and the Z-phase sensor 22 may be an optical sensor that emits light and receives light reflected by the detector 21.

[0030] The detector 21 includes a detectable portion 21a that is detected by the Z-phase sensor 22. For example, as in this embodiment, the detector 21 may also have a detection fixing portion 21b that is fixed to the brake rotating portion 12a, and the detectable portion 21a may protrude from the detection fixing portion 21b toward the Z-phase sensor 22.

[0031] Specifically, for example, as in this embodiment, the detection fixing portion 21b of the detector 21 may be fixed to the side surface 12c of the brake rotating portion 12a, and the detected portion 21a may protrude from the side surface 12c of the brake rotating portion 12a. However, the configuration is not limited to this, and the detector 21 may be fixed to the outer peripheral surface 12d of the brake rotating portion 12a, for example.

[0032] Furthermore, the detection fixing portion 21b of the detector 21 may be fixed to the brake rotating portion 12a by means of adhesive or fixing means (e.g., bolts and nuts). Also, the Z-phase sensor 22 may be fixed to the base body 14 by being fixed to the bracket 16 by the second fixing means 17, as in this embodiment.

[0033] By the way, since the Z-phase signal output by the first detection device 20 is a pulse signal with width, the position (origin position) of the sheave 11 when the Z-phase signal is turned on (the pulse rises) will be shifted if the rotation direction of the sheave 11 is different. Furthermore, if the pulse width of the Z-phase signal is large, the shift in the origin position of the sheave 11 due to the difference in the rotation direction of the sheave 11 will be large.

[0034] Furthermore, even if the dimension W1 (see Figure 6) in the rotational movement direction D4 of the detected part 21a is the same, the angle (central angle) occupied by the detected part 21a as seen from the center of the brake rotating part 12a changes depending on the fixed position of the detected part 21a relative to the brake rotating part 12a. Specifically, the further the fixed position of the detected part 21a is from the center of the brake rotating part 12a, the smaller the angle (central angle) occupied by the detected part 21a becomes.

[0035] Therefore, the detected unit 21a is positioned radially outward from the sheave 11. As a result, compared to a configuration in which the detected unit 21a overlaps with the sheave 11 in an axial view D1 of the sheave 11, for example, the central angle of the brake rotation unit 12a occupied by the detected unit 21a becomes smaller. Consequently, the pulse width of the Z-phase signal output by the first detection device 20 can be reduced.

[0036] Furthermore, as shown in Figure 6, in the rotational movement direction D4 of the detector 21, the dimension W1 of the detected portion 21a is smaller than the dimension W2 of the region (detection region) 22a in which the Z-phase sensor 22 detects the detected portion 21a. This makes it possible to reduce the pulse width of the Z-phase signal output by the first detection device 20.

[0037] As shown in Figure 7, the pulse width W5 of the Z-phase signal output by the first detection device 20 is smaller than the pulse width W3 of the A-phase signal output by the second detection device 30, and also smaller than the pulse width W4 of the B-phase signal output by the second detection device 30. This makes it possible to reduce the deviation of the origin position of the sheave 11 caused by the difference in the rotation direction of the sheave 11.

[0038] Alternatively, for example, the A-phase signal, B-phase signal, and Z-phase signal may be output from the detection devices 20 and 30 to the processing unit 7 (see Figure 1), and the processing unit 7 may control the hoisting machine 10 (specifically, the electric motor 13) by, for example, controlling the inverter device based on these signals.

[0039] For example, since the A-phase signal and the B-phase signal are signals with a 90° phase difference, the processing unit 7 may be configured to calculate the amount and direction of rotation of the sheave 11 (rotor 13b) based on the A-phase signal and the B-phase signal. Alternatively, for example, since the Z-phase signal is the origin signal with one pulse per revolution of the sheave 11 (rotor 13b), the processing unit 7 may be configured to set the origin position of the sheave 11 (rotor 13b) based on the Z-phase signal.

[0040] Thus, since the first detection device 20 outputs a Z-phase signal using the brake rotating part 12a, for example, the first detection device 20 is installed away from the axis 13x of the rotor 13b of the electric motor 13 (the axis of the sheave 11) when viewed from the axial direction D1 of the sheave 11. Furthermore, since the second detection device 30 outputs A-phase and B-phase signals using the brake rotating part 12a, for example, the second detection device 30 is also installed away from the axis 13x of the rotor 13b of the electric motor 13 (the axis of the sheave 11) when viewed from the axial direction D1 of the sheave 11.

[0041] Furthermore, for example, the first detection device 20 that outputs the Z-phase signal is a separate detection device from the second detection device 30 that outputs the A-phase signal and the B-phase signal. This allows for, without any particular limitations, the installation of the first detection device 20 in addition to a hoisting machine 10 that already has the second detection device 30 installed.

[0042] [1] Based on the above, the elevator hoisting machine 10 is as in this embodiment. A basket rope 3 is wrapped around the rotating sheave 11, A brake 12 that slows the rotation of the sheave 11, The system includes a first detection device 20 that converts the rotation of the sheave 11 into an electrical signal and outputs a Z-phase signal, The aforementioned brake 12 is A brake rotating part 12a that rotates integrally with the sheave 11, The system includes a braking portion 12b that pressurizes and contacts the aforementioned brake rotating portion 12a, The first detection device 20 is, A detector 21 fixed to the brake rotating part 12a, The system includes a Z-phase sensor 22 that detects when the detector 21 is located at a set position (in this embodiment, a detection area) 22a. This configuration is preferable.

[0043] With this configuration, the detector 21 is fixed to the brake rotating part 12a, and the Z-phase sensor 22 detects when the detector 21 is in the set position 22a. This allows the rotation of the sheave 11 to be converted into an electrical signal and a Z-phase signal to be output. Therefore, the Z-phase signal can be output using the brake rotating part 12a.

[0044] [2] Furthermore, the elevator hoisting machine 10 described in [1] above is as in this embodiment, The device further includes a second detection device 30 that converts the rotation of the sheave 11 into an electrical signal and outputs an A-phase signal and a B-phase signal. The second detection device 30 is A detection rotating part 31 is provided that is in contact with the brake rotating part 12a so as to rotate in conjunction with the rotation of the brake rotating part 12a, The system includes an A-phase sensor 32 and a B-phase sensor 33 that detect when the detection rotation unit 31 has rotated by a set amount. This configuration is preferable.

[0045] With this configuration, the detection rotation unit 31 is in contact with the brake rotation unit 12a and therefore rotates in conjunction with the rotation of the brake rotation unit 12a. The A-phase sensor 32 and the B-phase sensor 33 then detect when the detection rotation unit 31 has rotated by a set amount. This allows the rotation of the sheave 11 to be converted into an electrical signal, and the A-phase signal and B-phase signal can be output. Therefore, the A-phase signal and B-phase signal can also be output using the brake rotation unit 12a.

[0046] [3] Furthermore, in the elevator hoisting machine 10 described in [2] above, as in this embodiment, The pulse width W5 of the Z-phase signal output by the first detection device 20 is smaller than the pulse width W3 of the A-phase signal output by the second detection device 30, and also smaller than the pulse width W4 of the B-phase signal output by the second detection device 30. This configuration is preferable.

[0047] With this configuration, the pulse width W5 of the Z-phase signal output by the first detection device 20 is reduced to compensate for the shift in the position of the sheave 11 (i.e., the origin position) when the Z-phase signal is turned on due to differences in the rotation direction of the sheave 11. This makes it possible to reduce the shift in the origin position of the sheave 11 caused by differences in the rotation direction of the sheave 11.

[0048] [4] Furthermore, in any one of the elevator hoisting machines 10 described in [1] to [3] above, as in this embodiment, The detector 21 includes a detected part 21a that is detected by the Z-phase sensor 22, In the rotational movement direction D4 of the detector 21, the dimension W1 of the detected portion 21a is smaller than the dimension W2 of the region 22a in which the Z-phase sensor 22 detects the detected portion 21a. This configuration is preferable.

[0049] With this configuration, in the rotational movement direction D4 of the detector 21, the dimension W1 of the detected part 21a is smaller than the dimension of the region 22a in which the Z-phase sensor 22 detects the detected part 21a. As a result, the pulse width W5 of the Z-phase signal output by the first detection device 20 can be reduced. This reduces the deviation of the origin position of the sheave 11 caused by the difference in the rotation direction of the sheave 11.

[0050] [5] Furthermore, in any one of the elevator hoisting machines 10 described in [1] to [4] above, as in this embodiment, The detector 21 includes a detected part 21a that is detected by the Z-phase sensor 22, The detected part 21a is positioned radially outward from the sheave 11. This configuration is preferable.

[0051] With this configuration, since the detected unit 21a is positioned radially outward from the sheave 11, the pulse width W5 of the Z-phase signal output by the first detection device 20 can be reduced. Therefore, the deviation of the origin position of the sheave 11 caused by differences in the rotation direction of the sheave 11 can be reduced.

[0052] [6] Furthermore, elevator 1, as in this embodiment, The elevator hoisting machine 10 is provided with one of the above [1] to [5], This configuration is preferable.

[0053] With this configuration, the Z-phase signal can be output using the brake rotation unit 12a.

[0054] It should be noted that the elevator 1 and elevator hoisting machine 10 are not limited to the configuration of the embodiment described above, nor are they limited to the effects described above. Furthermore, it goes without saying that the elevator 1 and elevator hoisting machine 10 can be modified in various ways without departing from the spirit of the present invention. For example, one or more of the configurations and methods described below may be arbitrarily selected and adopted in the configurations and methods of the embodiment described above.

[0055] (A) In the elevator hoisting machine 10 according to the above embodiment, the first detection device 20 is installed away from the axis 13x of the rotor 13b of the electric motor 13 (axis of the sheave 11) when viewed in the axial direction D1 of the sheave 11, and the second detection device 30 is installed away from the axis 13x of the rotor 13b of the electric motor 13 (axis of the sheave 11) when viewed in the axial direction D1 of the sheave 11. However, the elevator hoisting machine 10 is not limited to this configuration.

[0056] For example, the first detection device 20 may be installed so as to overlap with the axis 13x of the rotor 13b of the electric motor 13 (the axis of the sheave 11) when viewed from the axial direction D1 of the sheave 11. Alternatively, for example, the second detection device 30 may be installed so as to overlap with the axis 13x of the rotor 13b of the electric motor 13 (the axis of the sheave 11) when viewed from the axial direction D1 of the sheave 11.

[0057] (B) Furthermore, the elevator hoisting machine 10 according to the above embodiment is configured to include a first detection device 20 that outputs a Z-phase signal and a second detection device 30 that outputs an A-phase signal and a B-phase signal. However, the elevator hoisting machine 10 is not limited to this configuration. For example, the elevator hoisting machine 10 may be configured to include a first detection device 20 that outputs a Z-phase signal, but not a second detection device 30 that outputs an A-phase signal and a B-phase signal.

[0058] In such a configuration, although not particularly limited, the elevator hoisting machine 10 may, for example, be equipped with a third detection device that converts the rotation of the sheave 11 into an electrical signal, in addition to the first detection device 20. The third detection device may be configured as, for example, a resolver that outputs analog sine and cosine waveform signals, or as, for example, an absolute encoder that outputs a digital angle value signal.

[0059] (C) Furthermore, in the elevator hoisting machine 10 according to the above embodiment, the pulse width W5 of the Z-phase signal output by the first detection device 20 is smaller than the pulse width W3 of the A-phase signal output by the second detection device 30, and is also smaller than the pulse width W4 of the B-phase signal output by the second detection device 30. However, the elevator hoisting machine 10 is not limited to this configuration.

[0060] For example, the configuration may be such that the pulse width W5 of the Z-phase signal output by the first detection device 20 is the same as the pulse width W3 of the A-phase signal and the pulse width W4 of the B-phase signal output by the second detection device 30. Alternatively, for example, the configuration may be such that the pulse width W5 of the Z-phase signal output by the first detection device 20 is larger than the pulse width W3 of the A-phase signal and the pulse width W4 of the B-phase signal output by the second detection device 30.

[0061] (D) Furthermore, in the elevator hoisting machine 10 according to the above embodiment, in the rotational movement direction D4 of the detector 21, the dimension W1 of the detected part 21a is smaller than the dimension W2 of the region 22a in which the Z-phase sensor 22 detects the detected part 21a. However, the elevator hoisting machine 10 is not limited to this configuration.

[0062] For example, in the rotational movement direction D4 of the detector 21, the dimension W1 of the detected part 21a may be larger than the dimension W2 of the region 22a in which the Z-phase sensor 22 detects the detected part 21a. In such a configuration, although not particularly limited, for example, the pulse width W5 of the Z-phase signal output by the first detection device 20 may be smaller than the pulse width W3 of the A-phase signal and the pulse width W4 of the B-phase signal output by the second detection device 30.

[0063] (E) In addition, in the elevator hoisting machine 10 according to the above embodiment, the entire detected part 21a is positioned radially outward from the sheave 11. However, the elevator hoisting machine 10 is not limited to this configuration.

[0064] For example, at least a portion of the detected part 21a may be arranged so as to overlap with the sheave 11 in the axial direction D1 of the sheave 11. In such a configuration, although not particularly limited, for example, the pulse width W5 of the Z-phase signal output by the first detection device 20 may be smaller than the pulse width W3 of the A-phase signal and the pulse width W4 of the B-phase signal output by the second detection device 30.

[0065] (F) In addition, in the elevator hoisting machine 10 according to the above embodiment, the brake 12 is configured such that the braking part 12b pressurizes and contacts the side surface 12c of the brake rotating part (specifically, the disc) 12a. However, the elevator hoisting machine 10 is not limited to this configuration. For example, the brake 12 may be configured such that the braking part 12b pressurizes and contacts the outer surface 12d of the brake rotating part (specifically, the drum) 12a.

[0066] (G) For example, the execution order of each step, such as the operation, procedure, step, and stage, in the method and apparatus shown in the claims, specification, and drawings can be carried out in any order, as long as the result of the previous step is not used in the later step. For example, even if "first," "next," etc. are used for convenience in the explanation, it does not mean that it is necessary to perform them in that order. [Explanation of symbols]

[0067] 1...Elevator, 2...Cage, 3...Cage rope, 4...Counterweight, 5...Cage rail, 6...Weight rail, 7...Processing unit, 10...Elevator hoisting machine, 11...Sheave, 12...Brake, 12a...Brake rotating part, 12b...Braking part, 12c...Side, 12d...Outer surface, 13...Drive source (motor), 13a...Stator, 13b...Rotor, 13c...Bearing, 13d...Shaft, 13e...Electromagnetic coil part, 13f...Magnet part, 13x...Axis center, 14... Base body, 15...First fixing means, 16...Bracket, 17...Second fixing means, 20...First detection device, 21...Detector, 21a...Detected part, 21b...Detection fixing part, 22...Z-phase sensor, 22a...Detection area, 30...Second detection device, 31...Detection rotation part, 32...A-phase sensor, 33...B-phase sensor, 34...Disk, 35...Device body, D1...First lateral direction, D2...Second lateral direction, D3...Up and down direction, D4...Rotational movement direction, X1...Elevator shaft

Claims

1. A basket rope is wrapped around the rotating rope wheel, A brake for slowing the rotation of the aforementioned sheave, The device comprises a first detection device that converts the rotation of the sheave into an electrical signal and outputs a Z-phase signal, The aforementioned brake is A brake rotating part that rotates integrally with the aforementioned sheave, It comprises a braking part that pressurizes and contacts the aforementioned brake rotating part, The first detection device is A detector fixed to the aforementioned brake rotation part, An elevator hoisting machine comprising a Z-phase sensor that detects when the detector is located at a set position.

2. The device further comprises a second detection device that converts the rotation of the sheave into an electrical signal and outputs an A-phase signal and a B-phase signal. The second detection device is A detection rotating part is provided that is in contact with the brake rotating part so as to rotate in conjunction with the rotation of the brake rotating part, The elevator hoisting machine according to claim 1, further comprising an A-phase sensor and a B-phase sensor for detecting when the detection rotation unit has rotated by a set amount.

3. The elevator hoisting machine according to claim 2, wherein the pulse width of the Z-phase signal output by the first detection device is smaller than the pulse width of the A-phase signal output by the second detection device, and also smaller than the pulse width of the B-phase signal output by the second detection device.

4. The detector comprises a detection unit that is detected by the Z-phase sensor, In the rotational movement direction of the detector, the dimensions of the detected portion are smaller than the dimensions of the region in which the Z-phase sensor detects the detected portion, according to any one of claims 1 to 3.

5. The detector comprises a detection unit that is detected by the Z-phase sensor, The elevator hoisting machine according to any one of claims 1 to 3, wherein the detected part is positioned radially outward from the sheave.

6. An elevator comprising an elevator hoisting machine as described in any one of claims 1 to 3.

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