Speed ​​monitoring device and elevator

Abstract

Ensure the reliability of monitoring the cage's movement speed. [Solution] A speed monitoring device 700 is configured, comprising: a rotating body 107 that rotates independently of the sheave 104a of the hoisting machine 104 on which the rope (main rope) 103 connected to the car 101 of the elevator 100 is suspended, and which is positioned vertically below the rotation center of the deflection wheel 105 on which the rope 103 is suspended, with its outer surface in contact with the deflection wheel 105; a deflection wheel encoder that outputs a signal corresponding to the rotation of the rotating body 107 which rotates in conjunction with the rotation of the deflection wheel 105; a UCMP panel that monitors the moving speed of the car 101 based on the output signal from the deflection wheel encoder; and a grease receiver (cover member) 701 that is provided in close contact with the deflection wheel between the rotating shaft 704 that rotatably supports the deflection wheel 105 and the rotating body 107, forming a fluid-containing space 802.

Description

Technical Field

[0001] This invention relates to a speed monitoring device for monitoring the speed of a cage and an elevator.

Background Art

[0002] Conventionally, in an elevator, when the cage moves a certain distance or more from the landing with the cage door open (hereinafter, appropriately referred to as the "door-open state"), a UCMP (Unintended Car Movement Protection) that activates the brake of the dual brake to stop the cage exists.

[0003] UCMP is composed of an independent UCMP board separate from the main control board that controls the entire elevator, and a dual brake. Thereby, for example, when the main control board fails, the cage can be stopped by the UCMP board, or when the braking force of one of the dual brakes decreases due to a failure or the like, the cage can be stopped by the other brake.

[0004] Generally, an encoder is attached to the elevator hoist, and UCMP determines whether the cage is moving (running) based on a signal (hereinafter referred to as an "encoder signal") obtained from this encoder. The encoder signal is also sent to the main control board that controls each part of the elevator. The main control board controls the running of the cage based on the encoder signal.

[0005] In addition to UCMP, an elevator is equipped with a speed governor for detecting an overspeed of the cage for the purpose of ensuring the safety of users. The speed governor includes a governor rope, a governor pulley, a rotating weight, etc. Thereby, when an overspeed occurs in the cage, the operation of the hoist can be stopped to stop the cage, and the safety of the elevator users can be ensured.

[0006] As a related technology, specifically, there has been a technology that allows for the automatic calculation of the speed conversion ratio when adding a door-open travel protection device to an existing elevator using an add-on method (see, for example, Patent Document 1 below). [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2018-52679 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] However, in speed monitoring using UCMP, a configuration in which the main control board and the UCMP panel operate based on the same encoder signal had a problem of low reliability because the signals related to speed monitoring were shared between the main control board and the UCMP panel. Specifically, for example, if an encoder failed, both the main control board and the UCMP panel would control their respective parts based on the encoder signal output from the failed encoder. Therefore, even though the UCMP panel is independent of the main control board, there was a problem of low reliability in monitoring the cage's movement speed.

[0009] One possible solution is to use a governor pulley or similar sheave as a rotating body and install an encoder on this rotating body. However, since the governor rope speed is designed to delay its tracking of the actual cage speed using springs or other means to prevent overspeed switches or safety devices from being activated unintentionally, if the brakes are activated using an encoder signal from an encoder installed on this rotating body, it will not be possible to respond quickly to the sudden acceleration under the worst-case conditions expected when UCM is activated. For this reason, using a governor pulley as a rotating body has the problem of being unsuitable for speed monitoring for UCM activation.

[0010] This invention aims to provide a speed monitoring device and elevator that can ensure reliability in monitoring the movement speed of the elevator car, in order to solve the problems of the prior art described above. [Means for solving the problem]

[0011] To solve the above-mentioned problems and achieve the objective, the speed monitoring device according to this invention is characterized by comprising: a rotating body that rotates independently of the sheave of the hoisting machine on which the main rope connected to the elevator car is suspended, and is positioned vertically below the rotation center of the deflector wheel on which the main rope is suspended, with its outer surface in contact with the deflector wheel; a deflector wheel encoder that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector wheel; a control board that monitors the moving speed of the car based on the output signal from the deflector wheel encoder; and a cover member that is provided in close contact with the deflector wheel between the rotating shaft that rotatably supports the deflector wheel and the rotating body, and forms a containment space capable of containing fluid.

[0012] Furthermore, the speed monitoring device according to this invention is characterized by comprising: a rotating body that rotates independently of the sheave of the hoisting machine on which the main rope connected to the elevator car is suspended, and is positioned with its outer surface in contact with the inner surface of the deflector wheel on which the main rope is suspended; a deflector wheel encoder that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector wheel; a control board that monitors the moving speed of the car based on the output signal from the deflector wheel encoder; and a cover member that is provided in close contact with the deflector wheel and forms a fluid-containing storage space below the rotating shaft that rotatably supports the deflector wheel.

[0013] Furthermore, the elevator according to this invention is characterized by comprising: a hoisting machine equipped with a sheave on which a main rope connected to a car is suspended; a brake for stopping the movement of the car; a sheave encoder that outputs a signal corresponding to the rotation of the sheave; a main control board that drives and controls the hoisting machine and monitors the movement speed of the car based on the encoder signal output from the sheave encoder; a deflector that rotates independently of the sheave and on which the main rope is suspended; a rotating body positioned vertically below the rotation center of the deflector, with its outer surface in contact with the deflector; a deflector encoder that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector; a control board that monitors the movement speed of the car based on the output signal from the deflector encoder; and a cover member provided in close contact with the deflector between a rotating shaft that rotatably supports the deflector and the rotating body, forming a fluid-container space.

[0014] Furthermore, the elevator according to this invention is characterized by comprising: a hoisting machine equipped with a sheave on which a main rope connected to a car is suspended; a brake for stopping the movement of the car; a sheave encoder that outputs a signal corresponding to the rotation of the sheave; a main control board that drives and controls the hoisting machine and monitors the movement speed of the car based on the encoder signal output from the sheave encoder; a deflector that rotates independently of the sheave and on which the main rope is suspended; a rotating body positioned with its outer surface in contact with the inner surface of the deflector; a deflector encoder that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector; a control board that monitors the movement speed of the car based on the output signal from the deflector encoder; and a cover member provided in close contact with the deflector and forming a fluid-container space below the rotating shaft that rotatably supports the deflector. [Effects of the Invention]

[0015] The speed monitoring device and elevator according to this invention have the effect of ensuring reliability in monitoring the movement speed of the elevator car.

Brief Description of the Drawings

[0016] [Figure 1] It is an explanatory diagram showing the configuration of the elevator according to Embodiment 1 of this invention. [Figure 2] It is an explanatory diagram (Part 1) showing the appearance of the speed monitoring device according to Embodiment 1 of this invention. [Figure 3] It is an explanatory diagram (Part 2) showing the appearance of the speed monitoring device according to Embodiment 1 of this invention. [Figure 4] It is an explanatory diagram showing the hardware configuration of the speed monitoring device and the elevator according to Embodiment 1 of this invention. [Figure 5] It is a flowchart (Part 1) showing an example of the processing procedure of the speed monitoring device according to Embodiment 1 of this invention. [Figure 6] It is a flowchart (Part 2) showing an example of the processing procedure of the speed monitoring device according to Embodiment 1 of this invention. [Figure 7] It is an explanatory diagram (Part 1) showing the speed monitoring device according to Embodiment 2 of this invention. [Figure 8] It is an explanatory diagram (Part 2) showing the speed monitoring device according to Embodiment 2 of this invention. [Figure 9] It is an explanatory diagram showing the appearance of the grease receiver. [Figure 10] It is an explanatory diagram showing the state in which the grease flowing out from the bearing is accommodated by the accommodation space.

Modes for Carrying Out the Invention

[0017] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the speed monitoring device and the elevator according to this invention will be described in detail.

[0018] <Embodiment 1> (Configuration of the Elevator) First, let's explain the elevator configuration. Figure 1 is an explanatory diagram showing the configuration of an elevator according to Embodiment 1 of this invention. In Figure 1, the elevator 100 can be realized by, for example, a rope-type (traction-type) elevator. The elevator 100 is installed, for example, in a building such as a multi-story building.

[0019] The elevator 100 is equipped with a car (ride car) 101 for carrying people and goods. One car 101 is provided for each elevator 100. The car 101 is installed in a hoistway (not shown) that penetrates each floor of the building in the vertical direction, that is, in the direction of movement of the car 101.

[0020] The elevator shaft is equipped with guide rails (not shown) on its sides to guide the elevator car 101 to the right position. The elevator shaft is also equipped with a shock absorber 102 at its bottom to mitigate the impact if the elevator car 101 were to fall and collide with the bottom of the elevator shaft. The shock absorber 102 may be a spring-type shock absorber 102 that uses the elastic force of a spring to mitigate the impact, or an oil-filled shock absorber 102 that uses hydraulic resistance to mitigate the impact. The shock absorber 102 may also be provided on the ceiling surface of the elevator shaft.

[0021] The cage 101 is connected to one end of the rope (main rope) 103. The rope 103 is suspended in a bucket-and-bucket fashion from the sheave 104a or deflection wheel 105 of the hoisting machine (traction machine) 104, and the other end is connected to the counterweight 106. Specifically, the rope 103 can be made of, for example, a steel wire.

[0022] The deflector wheel 105 guides the rope 103 suspended from the sheave to the cage 101 (or counterweight 106). The deflector wheel 105 has a fixed axle position and rotates around its axis in a fixed position (see Figure 2). There may be one deflector wheel 105 or multiple deflector wheels.

[0023] The rotating body 107 is in contact with the deflection wheel 105. When the elevator 100 has multiple deflection wheels, the rotating body 107 is positioned to contact the deflection wheel 105 that is closest to the sheave 104a. More specifically, the rotating body 107 is positioned to contact the deflection wheel 105 that is at the position where the length of the rope 103 led from the sheave 104a is shortest.

[0024] The deflection wheel 105, positioned closest to the sheave 104a, is preferably located below the sheave 104a in the vertical direction. The rope 103 is always in contact with the outer surface of the deflection wheel 105 due to its own weight and the tension generated by the weight of the cage 101 and counterweight 106.

[0025] In a rope-type elevator 100, the hoisting machine 104 is installed, for example, in a machine room located at the top of the elevator 100. The hoisting machine 104 can be installed at the top of the elevator 100 regardless of whether there is a machine room or not. Alternatively, if the elevator 100 is of a type without a machine room, the hoisting machine 104 may be installed at the bottom of the elevator 100.

[0026] The hoisting machine 104 is controlled, for example, using an inverter, and is driven and controlled by the control panel (main control board) 108 to stop rotating at the floor where the elevator car 101 is to be stopped. In a rope-type elevator 100, the elevator car 101 is raised and lowered by utilizing the frictional force (traction) between the rope 103 and the deflector wheel 105, which is generated by driving the hoisting machine 104.

[0027] The hoisting machine 104 is equipped with a sheave encoder (not shown in the diagram), and the control panel 108 can determine the rotational speed and rotational position of the hoisting machine 104 based on the output signal (encoder signal) from the sheave encoder. By determining the rotational speed and rotational position of the hoisting machine 104, the control panel 108 can grasp the operating status such as the position of the cage 101, the travel speed, and the stopping position.

[0028] The sheave encoder may be an absolute encoder or an incremental encoder. The sheave encoder may be installed when the elevator 100 is installed, or it may be added later.

[0029] The elevator 100 is also equipped with a brake 109, a governor machine 110, a limit switch 111, and the like. The brake 109 can be implemented as an electromagnetic brake that uses the electromagnetic force generated by energizing a coil, which is driven and controlled by the control panel 108, to stop the rotation of the hoisting machine 104. The brake 109 can maintain the state in which the rotation of the hoisting machine 104 is stopped.

[0030] The brake 109 is a dual-system brake and may be either a continuously operating type or a standby type. A continuously operating dual-system brake, as shown in Figure 1, is equipped with two independent brake mechanisms and is configured so that if one brake mechanism fails, the other brake mechanism will stop the car 101. A standby dual-system brake is equipped with a brake mechanism used for normal operation and a rope-type brake mechanism (not shown) that is different from the said brake mechanism and is configured so that if the brake mechanism used for normal operation fails, the rope-type brake mechanism will stop the car 101.

[0031] The governor 110 detects when the cage 101 exceeds its speed limit. The governor 110 can be implemented, for example, by a centrifugal governor equipped with a governor rope 110a, a governor pulley 110b, a rotor (not shown), etc. In such a governor 110, the governor rope 110a is linked to the movement of the cage 101. The governor pulley 110b rotates in conjunction with the movement of the governor rope 110a. The rotational speed of the governor pulley 110b changes according to the moving speed of the governor rope 110a (governor rope speed).

[0032] The rotor operates in accordance with the rotational speed of the governor pulley 110b, that is, the magnitude of the centrifugal force caused by the rotation of the governor pulley 110b. Specifically, the rotor operates to open towards the outer circumference of the governor pulley 110b when the rotational speed of the governor pulley 110b is fast, and to close towards the inner circumference of the governor pulley 110b when the rotational speed of the governor pulley 110b is slow.

[0033] The limit switch 111 is equipped with a switch lever (not shown) that switches between supplying and cutting off power to the hoisting machine 104. The switch lever is normally positioned to supply power to the hoisting machine 104, and when the rotor of the governor 110 is biased, it is displaced to a position that cuts off the power supply to the hoisting machine 104.

[0034] The rotor of the governor 110 biases the switch lever so that when the lifting speed of the cage 101 exceeds a certain speed relative to the rated speed, the switch lever is displaced to a position that cuts off the power supply to the hoisting machine 104. This allows the operation of the hoisting machine 104 to stop and the cage 101 to stop when the cage 101 exceeds its speed limit.

[0035] Furthermore, the elevator 100 may be equipped with an emergency stop device. The emergency stop device forcibly stops the operation of the car 101 when the operation of the car 101 and the operation of the governor rope 110a are different, that is, when the car 101 is operating even though the governor rope 110a has stopped. The emergency stop device can be easily implemented using various known technologies, so a detailed explanation is omitted.

[0036] The cage 101 is equipped with a door 101a. The cage 101 also includes a motor (not shown) for opening and closing the door 101a, a door opening / closing sensor (see Figure 4) for detecting the open / closed state of the door 101a, and an operation panel 101b. The motor for opening and closing the door 101a is driven and controlled by the control panel 108 to open and close the door 101a.

[0037] The door opening / closing sensor changes its output depending on whether door 101a or door 112a is open or closed, based on the state of the safety shoe located between door 101a and door 112a, which is located at positions (landings) 112 corresponding to each floor in the elevator shaft. The door opening / closing sensor can be implemented using, for example, a microswitch or a photoelectric sensor. The door opening / closing sensor is connected to the control panel 108 via wiring, and the signal output from the door opening / closing sensor is input to the control panel 108 via the same wiring.

[0038] The control panel 101b includes a group of control buttons, including various operation buttons, and a display that shows the floor level where the elevator car 101 is located. The control panel 101b also includes a microphone and speaker, enabling intercom functionality. The control panel 101b is equipped with a control board for the control panel 101b.

[0039] As described above, each landing 112 in the elevator shaft is provided with a door 112a. The doors 112a at each landing 112 are locked by a device called an interlock (not shown in the diagram). The interlock engages with the opening and closing mechanism of the car 101's door 101a and releases the lock only when the motor of the car 101 is driven while the elevator 100 has arrived at a stopping floor. This allows only the door 112a at the landing 112 on the floor where the car 101 is located to be opened and closed in conjunction with each other.

[0040] Furthermore, each landing 112 in the elevator shaft is provided with a plate (not shown) used for detecting the position of the elevator car 101. Multiple plates are provided along the length of the elevator shaft, i.e., in the vertical direction. The elevator car 101 is equipped with an elevator car position detection sensor 101c used for detecting the position of the elevator car 101 using the plates.

[0041] The cage position detection sensor 101c is installed, for example, on the outside of the cage 101, such as on the ceiling or walls of the cage 101. The cage position detection sensor 101c comprises a light-emitting element and a light-receiving element positioned opposite the light-emitting element. The cage position detection sensor 101c outputs a signal according to the light-receiving state of the light-receiving element. Specifically, as the cage 101 moves, the cage position detection sensor 101c outputs different signals to the control panel 108 depending on whether a plate is positioned between the light-emitting element and the light-receiving element, or whether the light-receiving element is receiving light emitted by the light-emitting element.

[0042] The plate is positioned to block light between the light-emitting element and the light-receiving element of the car position detection sensor 101c when the car 101 is located at the landing position (landing 112) on each floor. The plate may also be positioned to block light between the light-emitting element and the light-receiving element of the car position detection sensor 101c when the car 101 passes a predetermined distance away from the stopping position on each floor. This makes it possible to determine the position of the car 101 before it reaches the target floor.

[0043] Each elevator car 112 is equipped with an operation panel 113 that includes an elevator car call button 113a and a display 113b that shows the floor level where the elevator car 101 is located. Each operation panel 113 is equipped with a control board 113c for the operation panel 113, and is connected to the control panel 108 via the control board 113c.

[0044] The control panel 101b, various sensors including the cage position detection sensor 101c and door opening / closing sensor, the hoisting machine 104, the brake 109, the speed governor 110, the limit switch 111, and the control panel 113 (control board 113c) are all connected to the control panel 108 via cable 114.

[0045] (Configuration of the speed monitoring device in Embodiment 1) Next, the configuration of the speed monitoring device of Embodiment 1 will be described. Figures 2 and 3 are explanatory diagrams showing the external appearance of the speed monitoring device of Embodiment 1 according to the present invention. Figure 2 schematically shows the speed monitoring device of Embodiment 1 according to the present invention as viewed from vertically above. Figure 3 schematically shows the AA cross-section of Figure 2 (the speed monitoring device as viewed from the side).

[0046] As shown in Figures 2 and 3, the speed monitoring device 200 of Embodiment 1 according to the present invention comprises a rotating body 107, a deflection wheel encoder 205, and a UCMP panel (control board: see Figure 4). The rotating body 107 is provided to contact the deflection wheel 105 from above in the vertical direction. The rotating body 107 is supported by a beam 203 that rotatably supports the deflection wheel 105 via a pin 201 and a lever 202.

[0047] The pin 201 is fixed to the beam 203 by a screw 204 or the like. The pin 201 is rod-shaped and is fixed to the beam 203 in a state where it protrudes from the beam 203. The lever 202 is connected at one end in the longitudinal direction to the tip of the pin 201 that protrudes from the beam 203.

[0048] The rotating body 107 is connected to the other end of the lever 202. The rotating body 107 has a roller shape and is connected to the other end of the lever 202 in a state where it can rotate around its axis. The rotating body 107 is connected to the other end of the lever 202 in a state where its outer surface is in contact with the outer surface of the deflection wheel 105. Because the outer surface of the rotating body 107 is in contact with the outer surface of the deflection wheel 105, it rotates in conjunction with the rotation of the deflection wheel 105. In other words, the rotating body 107 rotates independently of the sheave 104a of the hoisting machine 104, on which the rope 103 connected to the cage 101 is suspended.

[0049] The lever 202 may be rotatably connected to the pin 201 around the axis of the pin 201. In this case, the lever 202 rotates due to the weight of the rotating body 107 so that the outer surface of the rotating body 107 always contacts the outer surface of the deflection wheel 105. This configuration ensures that the outer surface of the rotating body 107 is always in contact with the outer surface of the deflection wheel 105. As a result, the rotating body 107 can always be rotated in conjunction with the rotation of the deflection wheel 105.

[0050] A deflection-controlling encoder (rotary encoder) 205 is provided inside the rotating body 107. The deflection-controlling encoder 205 has a rotating plate (disk) 205a whose axis is the same as that of the rotating body 107. The rotating plate 205a rotates at a speed corresponding to the rotational speed of the rotating body 107. That is, the rotating plate 205a rotates faster when the rotational speed of the rotating body 107 is fast, and rotates slower when the rotational speed of the rotating body 107 is slow. The rotating plate 205a has multiple slits provided along its circumference.

[0051] Furthermore, the deflection vehicle encoder 205 includes a light-emitting element and a light-receiving element (both not shown in the figure) facing each other with the rotating plate 205a in between. The light-receiving element receives the light that passes through the slit in the rotating plate 205a from the light-emitting element. The light-receiving pattern per unit time received by the light-receiving element varies according to the rotation speed of the rotating plate 205a.

[0052] The deflection vehicle encoder 205 outputs a signal corresponding to the pattern of light received by the photodetector from the light-emitting element. Since the rotation speed of the rotating plate 205a varies according to the rotation speed of the deflection vehicle 105, the deflection vehicle encoder 205 outputs a signal with a different pattern for each rotation speed, corresponding to the rotation speed of the deflection vehicle 105.

[0053] The speed monitoring device 200 is equipped with a UCMP panel (control board) that controls the entire speed monitoring device 200 (see Figure 4). The UCMP panel monitors the movement speed of the cage 101 based on the signal output from the deflection vehicle encoder 205.

[0054] (Hardware configuration of the elevator, including the speed monitoring device 200) Next, the hardware configuration of the elevator 100 including the speed monitoring device 200 according to Embodiment 1 of this invention will be described. Figure 4 is an explanatory diagram showing the hardware configuration of the speed monitoring device 200 and elevator 100 according to Embodiment 1 of this invention.

[0055] As shown in Figure 4, the control panel 108 includes a CPU (Central Processing Unit) 410, memory 411, communication interface 412, input terminals 413, output terminals 414, and the like. The various parts 410 to 414 that make up the control panel 108 are connected by a bus 415.

[0056] The CPU 410 controls each part of the elevator 100 and is in charge of controlling the elevator 100 as a whole. The memory 411 stores programs and data used to control each part of the elevator 100. Specifically, the memory 411 stores, for example, a program that controls the brake 109 to stop the elevator car 101 when its movement speed exceeds a predetermined speed, as well as data related to the predetermined speed.

[0057] The communication interface 412 is connected to a communication network such as the Internet. This allows the elevator 100 to communicate (data communication) with devices connected to the communication network, such as a management server computer, via the communication interface 412.

[0058] The communication interface 412 can be implemented, for example, by a wireless communication interface such as a mobile phone line (e.g., LTE (Long Term Evolution), PHS (Personal Handy-phone System)). Alternatively, the communication interface 412 may be implemented by a wired communication interface such as a modem or LAN adapter.

[0059] The communication I / F412 may be connected to a public voice network, which is a network for voice communication, in addition to the communication network for data communication. This allows a person inside the elevator car 101 of the elevator 100 to communicate directly with an operator of the elevator maintenance company.

[0060] Input terminal 413 is a connection terminal (hardware interface) that connects the control panel 108 to various parts of the elevator 100. It receives signals output from various parts of the elevator 100 and outputs the received signals to the CPU 410. Input terminal 413 receives signals that various parts of the elevator 100 output to the control panel 108, so-called "up signals". The connection between input terminal 413 and the various parts of the elevator 100 may be wired or wireless.

[0061] Input terminals 413 are provided for each part of the elevator 100 that outputs a signal to the CPU 410, such as the hoisting machine 104, the control panels 101b and 113, and the door opening / closing sensor 401. The control panel 108 may receive signals from multiple control panels 113 installed on each floor using a single input terminal.

[0062] Output terminal 414 is a connection terminal (hardware interface) that connects the control panel 108 to various parts of the elevator 100, and outputs signals output from the CPU 410 to the corresponding parts of the elevator 100. Output terminal 414 outputs signals that are driven and controlled by the CPU 410, so-called "down signals". The connection between output terminal 414 and the various parts of the elevator 100 may be wired or wireless.

[0063] Output terminals 414 are provided for each part of the elevator 100 that operates in response to signals output from the CPU 410, such as the hoisting machine 104, brake 109, control panels 101b and 113, and limit switches 111. The control panel 108 may output signals indicating the floor where the elevator car 101 is located, which are displayed on the control panel 101b or the display unit 113b, to each part from a single output terminal 414.

[0064] The UCMP panel 420 includes a CPU 421, memory 422, input terminals 423, output terminals 424, and the like. Each component of the UCMP panel 420 is connected by a bus 425. The CPU 421 controls each component of the speed monitoring device 200. The memory 422 stores programs and various data used for monitoring the speed of the car 101 and controlling the brake 109. Specifically, the memory 422 stores programs that control the brake 109 to stop the car 101 regardless of the control of the control panel 108 when the car 101's movement speed exceeds a predetermined speed or when the car 101 moves more than a predetermined distance with the doors open, as well as various data used to execute such programs.

[0065] Input terminal 423 is a connection terminal (hardware interface) that connects the UCMP panel 420 and the door open / close sensor 401. It receives the signal output from the door open / close sensor 401 and outputs the received signal to the CPU 421. This allows the CPU 421 to understand the open / closed state of the door 101a of the cage 101.

[0066] The above-described encoder 205 for the deflection vehicle includes a light-emitting element and a light-receiving element. The light-emitting element emits light under the control of the CPU 421. The light-receiving element outputs a signal to the CPU 421 corresponding to the intensity of the received light. This allows the CPU 421 to monitor the movement speed of the cage 101.

[0067] The deflection vehicle encoder 205 may be connected via the input terminal 423. The input terminal 423 may also be connected to the output terminal 414 of the control panel 108. This allows the UCMP panel 420 to obtain information from the control panel 108, such as information regarding the operating status of the elevator 100. The connection between the input terminal 423 and the door opening / closing sensor 401 (and the deflection vehicle encoder 205 and the control panel 108) may be wired or wireless.

[0068] The output terminal 424 is a connection terminal (hardware interface) that connects the UCMP panel 420 and the brake 109, and outputs signals from the CPU 421 to the brake 109. The output terminal 424 may also be connected to the input terminal 413 of the control panel 108. This allows the UCMP panel 420 to notify the control panel 108 of, for example, the operating status of the speed monitoring device 200. The connection between the output terminal 424 and the brake 109 may be wired or wireless.

[0069] (Processing procedure for speed monitoring device 200) Next, the processing procedure of the speed monitoring device 200 according to Embodiment 1 of this invention will be described. Figures 5 and 6 are flowcharts showing an example of the processing procedure of the speed monitoring device 200 according to Embodiment 1 of this invention.

[0070] The speed monitoring device 200 continuously performs the processes shown in the flowchart of Figure 5 and the processes shown in the flowchart of Figure 6 in parallel. The speed monitoring device 200 performs the processes shown in the flowchart of Figure 5 and the processes shown in the flowchart of Figure 6 regardless of the control of the control panel 108.

[0071] In the flowchart of Figure 5, first, it is determined whether or not the cage 101 is moving (step S501). In step S501, it is possible to determine whether or not the cage 101 is moving based on the output signal from the deflection vehicle encoder 205. If it is determined in step S501 that the cage 101 is not moving (step S501: No), the determination of whether or not the cage 101 is moving is continued.

[0072] In step S501, if it is determined that the cage 101 is moving (step S501: Yes), it is determined whether the cage 101 is moving at or above a predetermined speed (step S502). In step S502, the cage 101's movement speed can be determined based on the output signal from the deflection vehicle encoder 205. In step S502, it is also possible to determine whether the cage 101's movement speed is moving at or above a predetermined speed based on the data stored in the memory 422.

[0073] In step S502, if the movement speed of the cage 101 is not equal to or greater than a predetermined speed (step S502: No), the process proceeds to step S501 to determine whether or not the cage 101 is moving. On the other hand, if in step S502 it is determined that the movement speed of the cage 101 is equal to or greater than a predetermined speed (step S502: Yes), a brake signal is output to the brake 109 to stop the cage 101 (step S503). As a result, if the movement speed of the cage 101 is equal to or greater than the predetermined speed, the brake 109 can be activated and the cage 101 can be stopped regardless of the control of the control panel 108.

[0074] In the flowchart of Figure 6, first, it is determined whether the door 101a of the cage 101 is open (step S601). In step S601, it is possible to determine whether the door is open or not based on the output signal of the door opening / closing sensor 401 obtained via the input terminal 423. If it is determined in step S601 that the door is not open (step S601: No), the determination of whether the door is open or not is continued.

[0075] If it is determined in step S601 that the door is open (step S601: Yes), then it is determined whether or not the car 101 is moving (step S602). In step S602, similar to step S501, it is possible to determine whether or not the car 101 is moving based on the output signal from the deflection vehicle encoder 205. If it is determined in step S602 that the car 101 is not moving (step S602: No), then the process proceeds to step S601 to continue determining whether or not the door is open.

[0076] In step S602, if it is determined that the cage 101 is moving (step S602: Yes), it is determined whether the distance the cage 101 has traveled is greater than or equal to a predetermined distance (step S603). In step S603, the distance the cage 101 has traveled can be determined based on the output signal from the deflection vehicle encoder 205. In step S603, it is also possible to determine whether the distance the cage 101 has traveled is greater than or equal to a predetermined distance based on the data stored in the memory 422.

[0077] In step S603, if it is determined that the distance traveled by the car 101 is not greater than a predetermined distance (step S603: No), the process proceeds to step S602 to determine whether the car 101 is moving or not. On the other hand, in step S603, if it is determined that the distance traveled by the car 101 is greater than a predetermined distance (step S603: Yes), a brake signal is output to the brake 109 to stop the car 101 (step S604). As a result, if the car 101, which was stopped at a landing 112 or the like, moves more than a predetermined distance from its stopping position, the brake 109 can be activated and the car 101 can be stopped regardless of the control panel 108's control.

[0078] As described above, the speed monitoring device 200 of Embodiment 1 according to the present invention is characterized by comprising: a rotating body 107 that rotates independently of the sheave 104a of the hoisting machine 104 on which the rope (main rope) 103 connected to the car 101 of the elevator 100 is suspended, and which is positioned with its outer surface in contact with the deflection wheel 105 on which the rope 103 is suspended; a deflection wheel encoder 205 that outputs a signal corresponding to the rotation of the rotating body 107 which rotates in conjunction with the rotation of the deflection wheel 105; and a UCMP panel (control board) 420 that monitors the moving speed of the car 101 based on the output signal from the deflection wheel encoder 205.

[0079] Furthermore, the elevator 100 of Embodiment 1 according to this invention includes a hoisting machine 104 equipped with a sheave 104a on which a rope (main rope) 103 connected to the car 101 is suspended, a brake 109 for stopping the movement of the car 101, a sheave encoder that outputs a signal corresponding to the rotation of the sheave 104a, a control panel (main control board) 108 that drives and controls the hoisting machine 104 and monitors the movement speed of the car 101 based on the encoder signal output from the sheave encoder, and a motor independent of the sheave 104a. The system is characterized by comprising: a deflection wheel 105 that rotates and on which the rope 103 is suspended; a rotating body 107 positioned so that its outer surface is in contact with the deflection wheel 105; a deflection wheel encoder 205 that outputs a signal corresponding to the rotation of the rotating body 107, which rotates in conjunction with the rotation of the deflection wheel 105; and a UCMP panel (control board) 420 that monitors the movement speed of the cage 101 based on a signal indicating the open / closed state of the cage door 101a and the output signal from the deflection wheel encoder 205.

[0080] According to the speed monitoring device 200 and elevator 100 equipped with the speed monitoring device 200 of Embodiment 1 of this invention, the moving speed of the car 101 can be monitored based on the output signal from the deflection wheel encoder 205, which is output in accordance with the rotation of the deflection wheel 105, which rotates independently of the sheave 104a of the hoisting machine 104.

[0081] This allows the control panel 108 to monitor the movement speed of the cage 101 based on a signal different from the output signal from the sheave encoder used for speed monitoring. Therefore, even if the sheave encoder fails, the control panel 108 fails, or the control program that operates the control panel 108 is corrupted, reliability in monitoring the movement speed of the cage 101 can be ensured.

[0082] Thus, according to the speed monitoring device 200 of Embodiment 1 of the present invention and the elevator 100 equipped with the speed monitoring device 200, the safety of users of the elevator 100 can be improved.

[0083] As mentioned above, the governor rope speed is designed with a spring or similar mechanism to delay its response to the actual cage speed, preventing the overspeed switch or safety device from being activated unintentionally. For this reason, if the governor system's sheave were to be a rotating body and the deflection encoder 205 were to be installed on this rotating body, it would be impossible to respond quickly to the sudden acceleration under the worst-case conditions anticipated when UCM is activated. Therefore, using a rotating body for the governor system's sheave is unsuitable for speed monitoring for UCM activation.

[0084] In contrast, in Embodiment 1 of this invention, the speed of the elevator 100 can be monitored without sharing the sheave encoder and without using a governor, thereby ensuring reliability in monitoring the movement speed of the car 101 and improving the safety of elevator 100 users.

[0085] Furthermore, according to the speed monitoring device 200 of Embodiment 1 of this invention and the elevator 100 equipped with the speed monitoring device 200, the movement speed of the car 101 can be monitored independently of the control panel 108 and the output signals from the hoisting machine encoder, based on the output signal from the deflection wheel encoder 205 of the speed monitoring device 200, which is different from the hoisting machine encoder provided on (or installed on) the hoisting machine 104. As a result, there is no need to redesign the speed monitoring device 200 due to differences in the specifications of the hoisting machine encoder, etc. This makes it possible to easily apply the speed monitoring device 200 to existing elevators.

[0086] Furthermore, the speed monitoring device 200 of Embodiment 1 according to this invention is characterized in that the UCMP panel 420 controls the brake 109 provided by the elevator 100 to stop the car 101 when the movement speed of the car 101 exceeds a predetermined speed, based on the output signal from the deflection car encoder 205.

[0087] Furthermore, the elevator 100 of Embodiment 1 according to this invention is characterized in that the UCMP panel 420 controls the brake 109 to stop the car 101 when the movement speed of the car 101 exceeds a predetermined speed, based on the output signal from the deflection car encoder 205.

[0088] According to the speed monitoring device 200 of Embodiment 1 of this invention and the elevator 100 equipped with the speed monitoring device 200, regardless of the control of the control panel 108 of the elevator 100, if the movement speed of the car 101 exceeds a predetermined speed, the brake 109 can be activated to stop the car 101.

[0089] This ensures that the cage 101 can be reliably stopped even if the sheave encoder malfunctions, the control panel 108 malfunctions, or the control program that operates the control panel 108 becomes corrupted.

[0090] Thus, according to the speed monitoring device 200 of Embodiment 1 of the present invention and the elevator 100 equipped with the speed monitoring device 200, it is possible to reliably prevent the car 101 from running out of control and improve the safety of elevator users 100.

[0091] Furthermore, the speed monitoring device 200 of Embodiment 1 according to this invention is characterized in that the UCMP panel 420 controls the brake 109 provided by the elevator 100 to stop the car 101 when the car 101 moves a certain distance with the door 101a open, based on a signal indicating the open / closed state of the door 101a of the car 101 and an output signal from the deflection vehicle encoder 205.

[0092] Furthermore, the elevator 100 of Embodiment 1 according to this invention is equipped with a door opening / closing sensor 401 that outputs a signal indicating the open / closed state of the door 101a of the car 101, and the UCMP panel 420 controls the brake 109 to stop the car 101 when the car 101 has moved a certain distance with the door 101a open, based on the output signal from the door opening / closing sensor 401 and the output signal from the deflection vehicle encoder 205.

[0093] According to the speed monitoring device 200 and the elevator 100 equipped with the speed monitoring device 200 of Embodiment 1 of this invention, regardless of the control of the control panel 108 of the elevator 100, if the car 101 moves a certain distance from the landing 112 or the like with the doors open, the brake 109 can be activated to stop the car 101.

[0094] This ensures that even if the sheave encoder malfunctions, the control panel 108 malfunctions, or the control program that operates the control panel 108 is corrupted, the cage 101 will not move beyond a certain distance while the door is open.

[0095] Thus, according to the speed monitoring device 200 of Embodiment 1 of the present invention and the elevator 100 equipped with the speed monitoring device 200, the safety of users of the elevator 100 can be improved.

[0096] Thus, according to the speed monitoring device 200 of Embodiment 1 of the present invention and the elevator 100 equipped with the speed monitoring device 200, it is possible to reliably prevent the car 101 from running out of control and improve the safety of elevator users 100.

[0097] The details of Embodiment 1 are described below as an addendum.

[0098] (Note 1) A rotating body that rotates independently of the sheave of the hoisting machine on which the main rope connected to the elevator car is suspended, and is positioned with its outer surface in contact with the deflector wheel on which the main rope is suspended, An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A speed monitoring device characterized by being equipped with the following features.

[0099] (Note 2) Based on the output signal from the deflection vehicle encoder, the control board controls the brakes of the elevator to stop the car when the car's movement speed exceeds a predetermined speed. The speed monitoring device described in Appendix 1, characterized by the features described herein.

[0100] (Note 3) Based on a signal indicating the open / closed state of the elevator car door and an output signal from the deflection vehicle encoder, the control board controls the brakes of the elevator to stop the car when the car has moved a certain distance while the door is open. The speed monitoring device described in Appendix 1, characterized by the features described herein.

[0101] (Note 4) A hoisting machine equipped with a sheave on which a main rope connected to a basket is suspended, A brake to stop the movement of the aforementioned basket, A sheave encoder that outputs a signal corresponding to the rotation of the sheave, A main control board that drives and controls the hoisting machine and monitors the movement speed of the cage based on the encoder signal output from the sheave encoder, A deflector wheel rotates independently of the aforementioned sheave, and the main rope is suspended from it. A rotating body is positioned with its outer surface in contact with the aforementioned deflector wheel, An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on a signal indicating the open / closed state of the cage door and an output signal from the deflection vehicle encoder. An elevator characterized by having the following features.

[0102] (Note 5) Based on the output signal from the deflection vehicle encoder, the control board controls the brake to stop the basket when the basket's movement speed exceeds a predetermined speed. The elevator described in Appendix 4, characterized by the features described herein.

[0103] (Note 6) The cage is equipped with a door open / close sensor that outputs a signal indicating the open / closed state of the cage door, The aforementioned control board is Based on the output signal from the door opening / closing sensor and the output signal from the deflection vehicle encoder, if the cage moves a certain distance while the door is open, the brake is controlled to stop the cage. The elevator described in Appendix 4, characterized by the features described herein.

[0104] <Embodiment 2> Next, a speed monitoring device according to Embodiment 2 of the present invention will be described. In Embodiment 2, the same parts as those in Embodiment 1 described above are indicated by the same reference numerals, and their descriptions are omitted.

[0105] In the speed monitoring device 200 of Embodiment 1 described above, the rotating body 107 is provided so as to contact the deflection wheel 105 from the vertically upper side. However, the speed monitoring device of Embodiment 2 differs from the speed monitoring device 200 of Embodiment 1 in that the rotating body 107 is provided so as to contact the deflection wheel 105 vertically lower than the rotation axis of the deflection wheel 105.

[0106] Furthermore, while the speed monitoring device 200 of Embodiment 1 described above is provided such that the rotating body 107 abuts against the outer circumferential surface of the deflection wheel 105, the speed monitoring device of Embodiment 2 differs from the speed monitoring device 200 of Embodiment 1 in that the rotating body 107 abuts against the inner circumferential surface of the deflection wheel 105.

[0107] (Configuration of the speed monitoring device in Embodiment 2) Figures 7 and 8 are explanatory diagrams showing a speed monitoring device according to Embodiment 2 of the present invention. Figure 7 shows the external appearance of the speed monitoring device according to Embodiment 2 of the present invention. Figure 8 schematically shows the BB cross section (a view of the speed monitoring device from the side) in Figure 7.

[0108] As shown in Figures 7 and 8, the speed monitoring device 700 of Embodiment 2 according to the present invention comprises a rotating body 107, a grease receiver 701, a deflection vehicle encoder 205, and a UCMP panel 420. In the speed monitoring device 700 of Embodiment 2, the cover member according to the present invention can be realized by the grease receiver 701.

[0109] The deflection wheel 105 comprises a rim portion 702 and a bearing 703 provided at the center of the rim portion 702. The rim portion 702 comprises a rim member 702a, a retaining ring member 702b, and a disc member 702c. Both the rim member 702a and the retaining ring member 702b are ring (tube) shaped. The diameter of the retaining ring member 702b is smaller than the diameter of the rim member 702a.

[0110] The retaining ring member 702b is located inside the rim member 702a and is provided in the central part of the rim member 702a. The retaining ring member 702b is connected to the rim member 702a by the disc member 702c. The bearing 703 is provided on the inner circumference side of the retaining ring member 702b.

[0111] The deflector wheel 105 is fixed to a rotating shaft 704 which is fixed to the beam 203 via a bearing 703. In Embodiment 2, the rotating shaft 704 is fixed to an arm 801 or the like which is fixed to the beam 203. The bearing 703 comprises an annular outer ring, an annular inner ring provided on the inner circumference side of the outer ring, rolling elements held between the outer ring and the inner ring, and a cage that maintains a constant distance between the rolling elements so that they do not come into contact with each other (all are not shown). Grease is filled between the outer ring and the inner ring.

[0112] The rotating body 107 is provided in contact with the inner circumferential surface of the rim member 702a. In the second embodiment, the rotating body 107 is provided below the rotation axis 704 in the vertical direction. Therefore, the rotating body 107 is located below the bearing 703 in the vertical direction.

[0113] (Structure of grease receiver 701) Next, the structure of the grease receiver 701 will be described. Figure 9 is an explanatory diagram showing the external appearance of the grease receiver 701. As shown in Figures 7 to 9, the grease receiver 701 comprises a main body portion 701a, a grease limiting portion 701b, and a flange portion 701c.

[0114] The main body portion 701a has a cylindrical shape. Preferably, the diameter (outer diameter) of the main body portion 701a is approximately the same as the inner diameter of the retaining ring member 702b. The grease limiting portion 701b has a ring shape with an opening in the center and is provided on one end of the main body portion in the axial direction. The end face of the grease limiting portion 701b is integrated with the main body portion 701a without any gap. The diameter of the opening in the grease limiting portion 701b is larger than the diameter of the rotating shaft 704.

[0115] The flange portion 701c is provided on the other end side of the main body portion 701a in the axial direction. The flange portion 701c is ring-shaped and protrudes from the other end of the main body portion 701a in the direction of the outer circumference of the main body portion 701a. The flange portion 701c has a through hole 901 through which a bolt (screw) that fixes the grease receiver 701 to the wheel 105 passes. The grease receiver 701 is fixed to the end face of the retaining ring member 702b. As a result, the main body portion 701a and the grease limiting portion 701b of the grease receiver 701 and the end face of the retaining ring member 702b constitute the storage space 802.

[0116] The speed monitoring device 700 may include a sealing member (not shown) such as a ring-shaped gasket or packing, provided between the flange portion 701c and the end face of the retaining ring member 702b. The sealing member can be formed using, for example, synthetic rubber, silicone, or various plastics. By providing a sealing member between the flange portion 701c and the end face of the retaining ring member 702b, high liquid tightness can be ensured between the deflection wheel 105 and the grease receiver 701 in the housing space 802.

[0117] As described above, when using a bearing 703 in which grease is filled between the outer ring and the inner ring, it is expected that grease will leak out when the bearing 703 is damaged. In the speed monitoring device 700 of Embodiment 2, since the rotating body 107 is located below the rotating shaft 704 in the vertical direction, there is a risk that the leaked grease will adhere to the rotating body 107 when grease leaks out.

[0118] Furthermore, in a structure in which the rotating body 107 is provided in contact with the inner circumferential surface of the rim member 702a, even if the rotating body 107 is provided above the rotating shaft 704 in the vertical direction, if grease leakage occurs, there is a risk that the leaked grease will adhere to the outer circumferential surface of the rotating body 107 as the deflector wheel 105 rotates. If grease adheres to the outer circumferential surface of the rotating body 107 and slippage occurs between the inner circumferential surface of the rim member 702a and the rotating body 107, it is anticipated that it will become difficult to accurately monitor the moving speed of the cage 101.

[0119] In contrast, according to the speed monitoring device 700 of Embodiment 2, if grease leakage occurs due to damage to the bearing 703, the leaked grease 1000 can be contained by the containment space 802, as shown in Figure 10. Figure 10 is an explanatory diagram showing the state in which the grease 1000 leaked from the bearing 703 is contained by the containment space 802.

[0120] Furthermore, according to the speed monitoring device 700 of the second embodiment, since the grease receiver 701 is equipped with a grease limiting section 701b, the grease contained in the containment space 802 can be limited by the grease limiting section 701b and kept within the containment space 802. This prevents grease 1000 that has leaked out due to damage to the bearing 703 or the like from adhering to the outer surface of the rotating body 107.

[0121] Thus, in this second embodiment of the speed monitoring device 700, since it is equipped with a grease receiver 701, even if grease leaks out due to damage to the bearing 703 or the like, the leaked grease 1000 can be retained in the storage space 802. This prevents the leaked grease 1000 from adhering to the outer surface of the rotating body 107.

[0122] Furthermore, in the speed monitoring device 700 of this second embodiment, since it is equipped with a flange portion 701c, the adhesion between the deflection wheel 105 and the grease receiver 701 that constitute the housing space 802 is improved, ensuring that the grease 1000 that has leaked out due to damage to the bearing 703 or the like is reliably contained within the housing space 802, and preventing the leaked grease 1000 from adhering to the outer surface of the rotating body 107.

[0123] Depending on the structure of the elevator 100 and the environment in which the elevator 100 is installed, it may be difficult to bring the rotating body 107 into contact with the deflection wheel 105 from above in a vertical direction. Furthermore, the deflection wheel 105 has a groove on its outer surface for guiding the rope 103, and since the rope 103 is guided in this groove, it may be difficult to bring the rotating body 107 into direct contact with the deflection wheel 105. Specifically, a part of the rotating body 107 may come into contact with the rope 103.

[0124] In such an elevator 100, it is conceivable that the rotation of the rotating body 107 may not be precisely synchronized with the rotation of the deflection wheel 105. Therefore, in order to monitor the movement speed of the car 101 based on the output signal from the deflection wheel encoder 205, it is preferable that the rotating body 107 is in firm contact with the deflection wheel 105.

[0125] According to the speed monitoring device 700 of Embodiment 2, by bringing the rotating body 107 into contact with the inner circumferential surface of the rim member 702a, which does not come into contact with the rope 103, the rotation of the deflection wheel 105 can be accurately acquired, and reliability for monitoring the moving speed of the cage 101 can be ensured.

[0126] As described above, the speed monitoring device 700 of Embodiment 2 of the present invention is characterized by comprising: a rotating body 107 that rotates independently of the sheave 104a of the hoisting machine 104 on which the rope (main rope) 103 connected to the car 101 of the elevator 100 is suspended, and is positioned vertically below the rotation center of the deflection wheel 105 on which the rope 103 is suspended, with its outer surface in contact with the deflection wheel 105; a deflection wheel encoder 205 that outputs a signal corresponding to the rotation of the rotating body 107 which rotates in conjunction with the rotation of the deflection wheel 105; a UCMP panel (control board) 420 that monitors the moving speed of the car 101 based on the output signal from the deflection wheel encoder 205; and a grease receiver (cover member) 701 that is provided in close contact with the deflection wheel between the rotating shaft 704 that rotatably supports the deflection wheel 105 and the rotating body 107, and forms a fluid-containing space 802.

[0127] Furthermore, the elevator 100 of the second embodiment includes a hoisting machine 104 equipped with a sheave 104a on which a rope (main rope) 103 connected to the car 101 is suspended, a brake 109 for stopping the movement of the car 101, a sheave encoder that outputs a signal corresponding to the rotation of the sheave 104a, a control panel (main control board) 108 that drives and controls the hoisting machine 104 and monitors the movement speed of the car 101 based on the encoder signal output from the sheave encoder, a deflector wheel 105 that rotates independently of the sheave 104a and on which the rope 103 is suspended, and a deflector wheel 105 located vertically below the center of rotation of the deflector wheel 105 The system is characterized by comprising: a rotating body 107 positioned with its outer surface in contact with the curve wheel 105; a curve wheel encoder 205 that outputs a signal corresponding to the rotation of the rotating body 107, which rotates in conjunction with the rotation of the curve wheel 105; a UCMP panel (control board) 420 that monitors the movement speed of the cage 101 based on a signal indicating the open / closed state of the cage door 101a and the output signal from the curve wheel encoder 205; and a grease receiver (cover member) 701 that is provided in close contact with the curve wheel between the rotating shaft 704 that rotatably supports the curve wheel 105 and the rotating body 107, forming a fluid-containing space 802.

[0128] According to the speed monitoring device 700 of Embodiment 2 of this invention and the elevator 100 equipped with the speed monitoring device 700, the moving speed of the car 101 can be monitored based on the output signal from the deflection wheel encoder 205, which is output in accordance with the rotation of the deflection wheel 105, which rotates independently of the sheave 104a of the hoisting machine 104.

[0129] This allows the control panel 108 to monitor the movement speed of the cage 101 based on a signal different from the output signal from the sheave encoder used for speed monitoring. Therefore, even if the sheave encoder fails, the control panel 108 fails, or the control program that operates the control panel 108 is corrupted, reliability in monitoring the movement speed of the cage 101 can be ensured.

[0130] Thus, according to the speed monitoring device 200 of Embodiment 1 of the present invention and the elevator 100 equipped with the speed monitoring device 200, the safety of users of the elevator 100 can be improved.

[0131] Furthermore, according to the speed monitoring device 700 of Embodiment 2 of this invention and the elevator 100 equipped with the speed monitoring device 700, since a grease receiver 701 is provided, if the bearing 703 is damaged and grease leaks out, the grease 1000 leaked from the bearing 703 can be contained in the containment space 802.

[0132] This prevents the leaked grease 1000 from adhering to the rotating body 107 even if the bearing 703 is damaged and grease leaks out, allowing the rotation of the rotating body 107 to accurately follow the rotation of the deflector wheel 105. This ensures reliability in monitoring the movement speed of the car 101 and improves the safety of elevator users 100.

[0133] Furthermore, the speed monitoring device 700 of Embodiment 2 according to this invention is characterized by comprising: a rotating body 107 that rotates independently of the sheave 104a of the hoisting machine 104 on which the rope (main rope) 103 connected to the car 101 of the elevator 100 is suspended, and which is positioned with its outer surface in contact with the inner surface of the rim member 702a on which the rope 103 is suspended; a deflection wheel encoder 205 that outputs a signal corresponding to the rotation of the rotating body 107 which rotates in conjunction with the rotation of the deflection wheel 105; a UCMP panel (control board) 420 that monitors the moving speed of the car 101 based on the output signal from the deflection wheel encoder 205; and a grease receiver (cover member) 701 that is provided in close contact with the deflection wheel 105 and forms a fluid-containing space 802 below the rotating shaft 704 that rotatably supports the deflection wheel 105.

[0134] Furthermore, the elevator 100 of the second embodiment includes a hoisting machine 104 equipped with a sheave 104a on which a rope (main rope) 103 connected to the car 101 is suspended, a brake 109 for stopping the movement of the car 101, a sheave encoder that outputs a signal corresponding to the rotation of the sheave 104a, a control panel (main control board) 108 that drives and controls the hoisting machine 104 and monitors the movement speed of the car 101 based on the encoder signal output from the sheave encoder, a deflection wheel 105 that rotates independently of the sheave 104a and on which the rope 103 is suspended, and the inner circumferential surface of the rim member 702a of the deflection wheel 105 The system is characterized by comprising: a rotating body 107 positioned in contact with the deflection wheel 105; a deflection wheel encoder 205 that outputs a signal corresponding to the rotation of the rotating body 107, which rotates in conjunction with the rotation of the deflection wheel 105; a UCMP panel (control board) 420 that monitors the movement speed of the cage 101 based on a signal indicating the open / closed state of the cage door 101a and the output signal from the deflection wheel encoder 205; and a grease receiver (cover member) 701 that is provided in close contact with the deflection wheel 105 and forms a fluid-containing space 802 below the rotating shaft 704 that rotatably supports the deflection wheel 105.

[0135] According to the speed monitoring device 700 of Embodiment 2 of this invention and the elevator 100 equipped with the speed monitoring device 700, the moving speed of the car 101 can be monitored based on the output signal from the deflection wheel encoder 205, which is output in accordance with the rotation of the deflection wheel 105, which rotates independently of the sheave 104a of the hoisting machine 104.

[0136] This allows the control panel 108 to monitor the movement speed of the cage 101 based on a signal different from the output signal from the sheave encoder used for speed monitoring. Therefore, even if the sheave encoder fails, the control panel 108 fails, or the control program that operates the control panel 108 is corrupted, reliability in monitoring the movement speed of the cage 101 can be ensured.

[0137] Thus, according to the speed monitoring device 200 of Embodiment 1 of the present invention and the elevator 100 equipped with the speed monitoring device 200, the safety of users of the elevator 100 can be improved.

[0138] Furthermore, according to the speed monitoring device 700 of Embodiment 2 of this invention and the elevator 100 equipped with the speed monitoring device 700, since a grease receiver 701 is provided, if the bearing 703 is damaged and grease leaks out, the grease 1000 leaked from the bearing 703 can be contained in the containment space 802.

[0139] This prevents the leaked grease 1000 from adhering to the rotating body 107 even if the bearing 703 is damaged and grease leaks out, allowing the rotation of the rotating body 107 to accurately follow the rotation of the deflector wheel 105. This ensures reliability in monitoring the movement speed of the car 101 and improves the safety of elevator users 100.

[0140] In a structure in which the rotating body 107 is in contact with the inner circumferential surface of the rim member 702a, if the deflector wheel 105 rotates while grease has leaked out of the bearing 703, it is conceivable that the grease will be stretched by the rotating body 107 and adhere to the entire inner circumferential surface.

[0141] In contrast, according to the speed monitoring device 700 of Embodiment 2 of the present invention and the elevator 100 equipped with the speed monitoring device 700, the grease 1000 that leaks out from the bearing 703 can be contained within the containment space 802. Therefore, even when the deflection wheel 105 rotates in a structure in which the rotating body 107 is in contact with the inner circumferential surface of the rim member 702a, it is possible to reliably prevent the grease 1000 that leaks out from the bearing 703 from adhering to the inner circumferential surface.

[0142] As a result, in a structure where the rotating body 107 is positioned vertically above the bearing 703 and in contact with the inner circumferential surface of the rim member 702a, even if the bearing 703 is damaged and grease leaks out, the rotation of the rotating body 107 can accurately follow the rotation of the deflector wheel 105. This ensures reliability in monitoring the movement speed of the car 101 and improves the safety of elevator users 100.

[0143] The details of Embodiment 2 are described below as an addendum.

[0144] (Note 7) A rotating body rotates independently of the sheave of the hoisting machine on which the main rope connected to the elevator car is suspended, and is positioned vertically below the rotation center of the deflector wheel on which the main rope is suspended, with its outer surface in contact with the deflector wheel. An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided between the rotating shaft that rotatably supports the deflector wheel and the rotating body, and is in close contact with the deflector wheel, forming a containment space capable of containing fluid. A speed monitoring device characterized by being equipped with the following features.

[0145] (Note 8) The speed monitoring device according to Appendix 7, further characterized in that the rotating body is arranged so that its outer surface is in contact with the inner surface of the deflector wheel.

[0146] (Note 9) A rotating body rotates independently of the sheave of the hoisting machine on which the main rope connected to the elevator car is suspended, and is positioned with its outer surface in contact with the inner surface of the deflector wheel on which the main rope is suspended. An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided in close contact with the deflector wheel and, below the rotating shaft that rotatably supports the deflector wheel, forms a fluid-containing storage space, A speed monitoring device characterized by being equipped with the following features.

[0147] (Note 10) The speed monitoring device according to Appendix 9, characterized in that the rotating body is positioned vertically below the rotation center of the deflector wheel, with its outer surface in contact with the inner surface of the deflector wheel.

[0148] (Note 11) The speed monitoring device according to Appendix 9, characterized in that the rotating body is positioned vertically above the rotation center of the deflector wheel, with its outer surface in contact with the inner surface of the deflector wheel.

[0149] (Note 12) A hoisting machine equipped with a sheave on which a main rope connected to a basket is suspended, A brake to stop the movement of the aforementioned basket, A sheave encoder that outputs a signal corresponding to the rotation of the sheave, A main control board that drives and controls the hoisting machine and monitors the movement speed of the cage based on the encoder signal output from the sheave encoder, A deflector wheel rotates independently of the aforementioned sheave, and the main rope is suspended from it. A rotating body is positioned vertically below the rotation center of the deflector wheel, with its outer surface in contact with the deflector wheel. An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided between the rotating shaft that rotatably supports the deflector wheel and the rotating body, and is in close contact with the deflector wheel, forming a containment space capable of containing fluid. An elevator characterized by having the following features.

[0150] (Note 13) A hoisting machine equipped with a sheave on which a main rope connected to a basket is suspended, A brake to stop the movement of the aforementioned basket, A sheave encoder that outputs a signal corresponding to the rotation of the sheave, A main control board that drives and controls the hoisting machine and monitors the movement speed of the cage based on the encoder signal output from the sheave encoder, A deflector wheel rotates independently of the aforementioned sheave, and the main rope is suspended from it. A rotating body is positioned such that its outer surface is in contact with the inner surface of the deflector wheel, An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided in close contact with the deflector wheel and, below the rotating shaft that rotatably supports the deflector wheel, forms a fluid-containing storage space, An elevator characterized by having the following features. [Industrial applicability]

[0151] As described above, the speed monitoring device and elevator according to this invention are useful for monitoring the speed of an elevator car, and are particularly suitable for improving the reliability of car speed monitoring. [Explanation of Symbols]

[0152] 100 elevators 101 Basket 104 Hoisting machine 104a Sheave wheel 105 Vehicles that are deflected 107 Solids of revolution 109 Brake 205 Encoder for vehicles with deflected suspension 205a Rotating plate 401 Door Open / Close Sensor 420 UCMP board 700 speed monitoring device 701 Grease tray 701a Main body 701b Grease limiting section 701c flange section 701d Through hole 702 Rim section 702a Rim member 702b Retaining ring member 702c disk component 703 Bearing 704 Rotation axis 801 Arm 802 Containment Space 901 Through hole

Claims

1. A rotating body rotates independently of the sheave of the hoisting machine on which the main rope connected to the elevator car is suspended, and is positioned vertically below the rotation center of the deflector wheel on which the main rope is suspended, with its outer surface in contact with the deflector wheel. An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided between the rotating shaft that rotatably supports the deflector wheel and the rotating body, and is provided in close contact with the deflector wheel, forming a containment space capable of containing fluid. A speed monitoring device characterized by being equipped with the following features.

2. A rotating body rotates independently of the sheave of the hoisting machine on which the main rope connected to the elevator car is suspended, and is positioned with its outer surface in contact with the inner surface of the deflector wheel on which the main rope is suspended. An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided in close contact with the deflector wheel and, below the rotating shaft that rotatably supports the deflector wheel, forms a fluid-containing storage space, A speed monitoring device characterized by being equipped with the following features.

3. A hoisting machine equipped with a sheave on which a main rope connected to a basket is suspended, A brake to stop the movement of the aforementioned basket, A sheave encoder that outputs a signal corresponding to the rotation of the sheave, A main control board that drives and controls the hoisting machine and monitors the movement speed of the cage based on the encoder signal output from the sheave encoder, A deflector wheel rotates independently of the aforementioned sheave, and the main rope is suspended from it. A rotating body is positioned vertically below the rotation center of the deflector wheel, with its outer surface in contact with the deflector wheel. An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided between the rotating shaft that rotatably supports the deflector wheel and the rotating body, and is provided in close contact with the deflector wheel, forming a containment space capable of containing fluid. An elevator characterized by having the following features.

4. A hoisting machine equipped with a sheave on which a main rope connected to a basket is suspended, A brake to stop the movement of the aforementioned basket, A sheave encoder that outputs a signal corresponding to the rotation of the sheave, A main control board that drives and controls the hoisting machine and monitors the movement speed of the cage based on the encoder signal output from the sheave encoder, A deflector wheel rotates independently of the aforementioned sheave, and the main rope is suspended from it. A rotating body is positioned such that its outer surface is in contact with the inner surface of the deflector wheel, An encoder for a deflector vehicle that outputs a signal corresponding to the rotation of the rotating body which rotates in conjunction with the rotation of the deflector vehicle, A control board monitors the movement speed of the cage based on the output signal from the encoder for the deflection vehicle, A cover member is provided in close contact with the deflector wheel and, below the rotating shaft that rotatably supports the deflector wheel, forms a fluid-containing storage space, An elevator characterized by having the following features.

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