WO2023026423A1 - Elevator device - Google Patents

Elevator device Download PDF

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Publication number
WO2023026423A1
WO2023026423A1 PCT/JP2021/031300 JP2021031300W WO2023026423A1 WO 2023026423 A1 WO2023026423 A1 WO 2023026423A1 JP 2021031300 W JP2021031300 W JP 2021031300W WO 2023026423 A1 WO2023026423 A1 WO 2023026423A1
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WO
WIPO (PCT)
Prior art keywords
car
electric actuator
brake shoe
electromagnet
rod
Prior art date
Application number
PCT/JP2021/031300
Other languages
French (fr)
Japanese (ja)
Inventor
聡志 沼田
Original Assignee
株式会社日立製作所
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Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP2023543572A priority Critical patent/JPWO2023026423A1/ja
Priority to PCT/JP2021/031300 priority patent/WO2023026423A1/en
Priority to EP21954424.4A priority patent/EP4393861A1/en
Priority to CN202180101528.6A priority patent/CN117794838A/en
Publication of WO2023026423A1 publication Critical patent/WO2023026423A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces

Definitions

  • the present invention relates to an elevator apparatus equipped with an electrically operated safety device.
  • the elevator system is equipped with a governor and an emergency stop device to constantly monitor the ascending and descending speed of the car and to emergency stop the car that has fallen into a predetermined overspeed condition.
  • the car and the governor are connected by a governor rope, and when an overspeed condition is detected, the governor restrains the governor rope and activates the emergency stop device on the car side to bring the car to an emergency stop.
  • Patent Document 1 The technology described in Patent Document 1 is known as a conventional technology related to a safety device that does not use a governor rope.
  • a drive shaft that drives the safety device and an operating mechanism that operates the drive shaft are provided on the car.
  • the operating mechanism includes a movable iron core mechanically connected to the drive shaft via a connecting piece, and an electromagnet that attracts the movable iron core.
  • the drive shaft is biased by a drive spring, but normally the movement of the drive shaft is restrained by the operating mechanism because the electromagnet is energized and the movable iron core is attracted.
  • the electromagnet is demagnetized and the restraint on the drive shaft is released, and the drive shaft is driven by the biasing force of the drive spring.
  • the lifting rod of the safety device is pulled up, so that the safety device operates to bring the car to an emergency stop.
  • the electromagnet when returning the safety device to its normal state, move the electromagnet closer to the movable iron core that was moved in the event of an emergency.
  • the electromagnet contacts the movable core, the electromagnet is energized and the movable core is attracted to the electromagnet. Further, the electromagnet is driven while the movable iron core is attracted to the electromagnet, and the movable iron core and the electromagnet are returned to the normal standby position.
  • the movement mechanism of the electromagnet has a feed screw shaft with which the electromagnet is screwed, and a motor for rotating the feed screw shaft.
  • the present invention provides an elevator apparatus equipped with an electric emergency stop device that can improve the degree of freedom in installation and is suitable for space saving.
  • an elevator system includes a car, a safety device provided in the car, and an electric actuator provided in the car for operating the safety device.
  • the electric actuator includes a movable member, an electromagnet for attracting the movable member in a standby state of the electric actuator, a rod connected to the movable member, and a brake actuating member connected to an end of the rod.
  • the space occupied by the actuating mechanism of the safety device can be reduced, and the degree of freedom in the installation position of the actuating mechanism is improved.
  • FIG. 1 is a schematic configuration diagram of an elevator apparatus that is an embodiment;
  • FIG. It is a front view which shows the mechanism part of the electric actuator in an Example. It is a front view which shows the mechanism part of the electric actuator in an Example.
  • FIG. 3 is a side view showing the mechanical portion of the electric actuator in the example; It is a side view which shows the mechanism part of the electric actuator in a modification.
  • FIG. 1 is a schematic configuration diagram of an elevator system that is one embodiment of the present invention.
  • the elevator system includes a car 1, an electric actuator 10, a drive mechanism (12, 100, etc.), and a safety device 2.
  • a car 1 is suspended by a main rope (not shown) in a hoistway provided in a building, and is slidably engaged with a guide rail 4 via a guide device (not shown).
  • a driving device hoisting machine: not shown
  • the car 1 ascends and descends in the hoistway.
  • a speed detection device (not shown) is provided in the car 1 and constantly detects the ascending/descending speed of the car 1 in the hoistway. Therefore, the speed detector can detect that the elevator car 1 has exceeded a predetermined overspeed.
  • the speed detection device is provided with an image sensor, and detects the speed of the car 1 based on the image information of the surface condition of the guide rail 4 acquired by the image sensor. For example, the speed detection device calculates the speed from the moving distance of the image feature amount in a predetermined time.
  • the speed detection device may calculate the speed of the car based on the output signal of a rotary encoder that rotates as the car moves.
  • the electric actuator 10 is an electromagnetic actuator in this embodiment and is arranged at the bottom of the car 1 .
  • a drive mechanism (12, 100, etc.) is also arranged in the lower part of the car 1. As shown in FIG.
  • the brake shoe activating member 100 pushes up the brake shoe 200 of the safety device 2 . That is, the brake shoe 200 is activated by the brake shoe activation member 100 . As a result, the safety device 2 operates.
  • the safety devices 2 are arranged one by one on the left and right sides of the car 1.
  • a pair of brake elements 200 included in each safety device 2 is movable between a braking position and a non-braking position, and sandwiches the guide rail 4 at the braking position. Further, when the safety device 2 rises relative to the car 1 due to the descent of the car 1, the frictional force acting between the brake shoe 200 and the guide rail 4 produces a braking force. As a result, the safety device 2 is actuated when the car 1 is in an overspeed condition to bring the car 1 to an emergency stop.
  • the elevator system of this embodiment has a so-called ropeless governor system that does not use a governor rope. ), the power supply to the drive (hoist) and to the control device controlling this drive is cut off. Further, when the descending speed of the car 1 reaches a second overspeed (for example, a speed not exceeding 1.4 times the rated speed), the electric actuator 10 provided in the car 1 operates the safety device 2. Then, the car 1 is brought to an emergency stop.
  • a second overspeed for example, a speed not exceeding 1.4 times the rated speed
  • the ropeless governor system is composed of the aforementioned speed detection device and a safety control device that determines the overspeed state of the car 1 based on the output signal of the speed detection device.
  • This safety control device measures the speed of the car 1 based on the output signal of the speed detection device, and when it is determined that the measured speed has reached the first overspeed, the power supply of the drive device (hoisting machine) and It outputs a command signal for shutting off the power supply of the control device that controls this drive device. Further, when the safety control device determines that the measured speed has reached the second overspeed, it outputs a command signal for operating the electric actuator 10 .
  • the pair of brakes provided in the safety device 2 are activated by the brakes activating member 100, the pair of brakes sandwich the guide rail 4.
  • FIG. 2 is a front view in the installation state of FIG. 1, showing the electric actuator 10 and the mechanical portion of the drive mechanism in this embodiment.
  • the safety device is in a non-braking state
  • the electric actuator 10 is in a non-operating state (standby state). That is, the elevator installation is in its normal state.
  • the electric actuator 10 is in a standby state when the elevator system is in normal operation.
  • the movable member 34 is attracted to the energized electromagnet 35 .
  • the movement of the connection bracket 38 that connects the movable member 34 and the pressing member 15 (spring seat) is restrained against the biasing force of the drive spring 13 (compression spring).
  • At least the portion of the movable member 34 that is attracted to the electromagnet 35 is made of a magnetic material.
  • the rod 21 penetrates through the pressing member 15 .
  • the pressing member 15 is fixed to the rod 21 .
  • the fixed member 14 is fixed to a structural member (not shown) of the car 1 positioned below the car, such as a car lower frame.
  • the rod 21 slidably penetrates the fixed member 14 .
  • the rod 21 is passed through the drive spring 13 .
  • the drive spring 13 is positioned between the fixed member 14 and the pressing member 15 . One end and the other end of the drive spring 13 abut against the fixing member 14 and the pressing member 15, respectively.
  • the drive spring 13 is pressed by the fixing member 14 and the pressing member 15 . Therefore, the drive spring 13 is compressed and stores elastic energy. In other words, the drive spring 13 stores biasing force.
  • a rod 21 is connected to each of the pair of left and right brake shoe activation members 100 .
  • Each rod 21 can be operated in conjunction with a link mechanism consisting of a link 12 and a link holding pin 30 .
  • the brake shoe activating member 100 has a tapered portion, and the tapered surface is in contact with the bottom of the brake shoe 200 .
  • the brake shoe activation member 100 is made of a bar-shaped metal member.
  • a bar-shaped metal member As the metal member, a bulk member, a bent plate member, or the like can be applied. It should be noted that members of various shapes and materials can be applied without being limited to bar-shaped metal members as long as they have sufficient strength to support and push up the brake shoe 200 .
  • FIG. 3 is a front view in the installation state of FIG. 1, showing the electric actuator 10 and the mechanical portion of the drive mechanism in this embodiment.
  • the safety device is in a braking state, and the electric actuator 10 is in an operating state. That is, the elevator installation is in a stopped state.
  • the electric actuator 10 In order to return the electric actuator 10 to the standby state, the electric actuator 10 is operated as described below.
  • the electric actuator 10 has a feed screw 36 (for example, a trapezoidal screw) located on the planar portion of the base portion for driving the movable member 34 .
  • the feed screw 36 is rotatably supported by a first support member 41 and a second support member 42 fixed on the plane of the substrate portion.
  • the electromagnet 35 has a nut portion that is screwed onto the feed screw 36 .
  • the feed screw 36 is rotationally driven by a motor 37 .
  • a plate-shaped member such as a metal plate may be used as the substrate portion, or a flat portion of steel material that constitutes the cage lower frame may be used.
  • the motor 37 is driven to rotate the feed screw 36 .
  • Rotation of the motor 37 is converted into linear movement of the electromagnet 35 along the axial direction of the feed screw 36 by the rotating feed screw 36 and the nut portion of the electromagnet 35 .
  • the electromagnet 35 approaches the movable member 34 and comes into contact with the movable member 34 .
  • the electromagnet 35 is excited and the motor 37 is stopped.
  • the movable member 34 is attracted to the electromagnet 35 by electromagnetic force.
  • FIG. 4 is a side view showing the mechanical portion of the electric actuator 10 in this embodiment in the installation state of FIG. That is, FIG. 4 is a perspective view of A in FIG.
  • the rod 21 extends directly below the pair of brake pads 200 . Therefore, the brake shoe actuating member 100 connected to the end of the rod 21 is in direct contact with the brake shoe 200 .
  • the safety device in this embodiment does not have a lifting rod whose longitudinal direction extends in the height direction of the car, unlike safety devices according to known technologies.
  • Other configurations are the same as those of known safety devices.
  • the brake 200 and an elastic body such as a leaf spring that presses the brake 200 are housed in a housing 201 (or a frame).
  • FIG. 5 is a side view, similar to FIG. 4, showing the mechanical portion of the electric actuator 10 in the elevator system as a modified example.
  • a lever 203 is connected to the lower part of the pair of brake pads 200 .
  • the lever 203 extends laterally of the pair of brake pads 200 , that is, from the lower part of the brake pads 200 in a direction perpendicular to the longitudinal direction of the rod 21 .
  • the end or free end of the extension of lever 203 contacts the tapered surface of brake shoe actuating member 100 .
  • the lever 203 is pushed up by the brake shoe activating member 100, thereby pushing the brake shoe 200 up.
  • the brake 200 is pushed up by the brake actuating member 100, so that the space occupied by the operating mechanism of the safety device (the electric actuator 10 and the drive mechanism (12, 200, etc.)) can be reduced. At the same time, the degree of freedom of the installation position of the operating mechanism is improved.
  • the present invention is not limited to the above-described embodiments, and includes various modifications.
  • the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations.
  • the electric actuator may be installed above the car.
  • the elevator apparatus may have a machine room or may be a so-called machine room-less elevator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

Disclosed is an elevator device provided with an electromotive safety brake device that offers a high degree of freedom of installation and is suitable for conserving space. This elevator device is provided with a car (1), a safety brake device (2) provided to the car (1), and an electric actuator (10) that is provided to the car and actuates the safety brake device. The electric actuator is provided with a mobile member, an electromagnet that attracts the mobile member in a standby state of the electric actuator, a rod that is connected to the mobile member, and a braking element activation member (100) that is connected to an end of the rod. When excitation of the electromagnet is stopped and the rod is driven, a braking element (200) of the safety brake device is pushed up by the braking element activation member.

Description

エレベータ装置elevator equipment
　本発明は、電動で作動する非常止め装置を備えるエレベータ装置に関する。 The present invention relates to an elevator apparatus equipped with an electrically operated safety device.
　エレベータ装置には、乗りかごの昇降速度を常時監視して、所定の過速状態に陥った乗りかごを非常停止させるために、ガバナおよび非常止め装置が備えられている。一般に、乗りかごとガバナはガバナロープによって結合されており、過速状態を検出すると、ガバナがガバナロープを拘束することで乗りかご側の非常止め装置を動作させ、乗りかごを非常停止するようになっている。 The elevator system is equipped with a governor and an emergency stop device to constantly monitor the ascending and descending speed of the car and to emergency stop the car that has fallen into a predetermined overspeed condition. In general, the car and the governor are connected by a governor rope, and when an overspeed condition is detected, the governor restrains the governor rope and activates the emergency stop device on the car side to bring the car to an emergency stop. there is
　このようなエレベータ装置では、昇降路内に長尺物であるガバナロープを敷設するため、省スペース化および低コスト化が難しい。また、ガバナロープが振れる場合、昇降路内における構造物とガバナロープとが干渉しやすくなる。 In such an elevator system, it is difficult to save space and reduce costs because a long governor rope is laid in the hoistway. In addition, when the governor rope swings, the structures in the hoistway and the governor rope tend to interfere with each other.
　これに対し、ガバナロープを用いない非常止め装置が提案されている。 In response, an emergency stop device that does not use a governor rope has been proposed.
　ガバナロープを用いない非常止め装置に関する従来技術として、特許文献１に記載された技術が知られている。 The technology described in Patent Document 1 is known as a conventional technology related to a safety device that does not use a governor rope.
　本従来技術では、乗りかご上に、非常止め装置を駆動する駆動軸と、駆動軸を作動させる作動機構が設けられる。作動機構は、接続片を介して駆動軸に機械的に接続される可動鉄心と、可動鉄心を吸着する電磁石を備えている。駆動軸は、駆動バネによって付勢されているが、通常時は、電磁石が通電され可動鉄心が吸着されているため、作動機構によって駆動軸の動きが拘束されている。 In this prior art, a drive shaft that drives the safety device and an operating mechanism that operates the drive shaft are provided on the car. The operating mechanism includes a movable iron core mechanically connected to the drive shaft via a connecting piece, and an electromagnet that attracts the movable iron core. The drive shaft is biased by a drive spring, but normally the movement of the drive shaft is restrained by the operating mechanism because the electromagnet is energized and the movable iron core is attracted.
　非常時には、電磁石が消磁されて駆動軸の拘束が解かれ、駆動バネの付勢力によって駆動軸が駆動される。これにより、非常止め装置の引上げロッドが引き上げられるので、非常止め装置が動作して、乗りかごが非常停止する。 In the event of an emergency, the electromagnet is demagnetized and the restraint on the drive shaft is released, and the drive shaft is driven by the biasing force of the drive spring. As a result, the lifting rod of the safety device is pulled up, so that the safety device operates to bring the car to an emergency stop.
　また、非常止め装置を通常状態に復帰させるときには、非常時に移動した可動鉄心に、電磁石を移動して近付ける。電磁石が可動鉄心に当接したら、電磁石を通電し、可動鉄心を電磁石に吸着する。さらに、可動鉄心が電磁石に吸着された状態で、電磁石を駆動して、可動鉄心および電磁石を通常時の待機位置に戻す。なお、電磁石の移動機構は、電磁石が螺合する送りねじ軸と、送りねじ軸を回転させるモータとを有する。 Also, when returning the safety device to its normal state, move the electromagnet closer to the movable iron core that was moved in the event of an emergency. When the electromagnet contacts the movable core, the electromagnet is energized and the movable core is attracted to the electromagnet. Further, the electromagnet is driven while the movable iron core is attracted to the electromagnet, and the movable iron core and the electromagnet are returned to the normal standby position. The movement mechanism of the electromagnet has a feed screw shaft with which the electromagnet is screwed, and a motor for rotating the feed screw shaft.
国際公開第２０２０／１１０４３７号WO2020/110437
　上記従来技術では、作動機構が、非常止め装置の引上げロッドを引き上げるように構成されるため、作動機構の設置の自由度が制限されたり、作動機構の設置スペースが大きくなったりする。 In the conventional technology described above, since the operating mechanism is configured to pull up the lifting rod of the safety device, the degree of freedom in installing the operating mechanism is limited and the installation space for the operating mechanism increases.
　そこで、本発明は、設置の自由度が向上でき、省スペース化に適した、電動の非常止め装置を備えるエレベータ装置を提供する。 Therefore, the present invention provides an elevator apparatus equipped with an electric emergency stop device that can improve the degree of freedom in installation and is suitable for space saving.
　上記課題を解決するために、本発明によるエレベータ装置は、乗りかごと、乗りかごに設けられる非常止め装置と、乗りかごに設けられ、非常止め装置を動作させる電動作動器と、を備えるものであって、電動作動器は、可動部材と、電動作動器の待機状態において、可動部材を吸引する電磁石と、可動部材に接続されるロッドと、ロッドの端部に接続される制動子起動部材と、を備え、電磁石の励磁が停止され、ロッドが駆動されると、制動子起動部材によって非常止め装置の制動子が押し上げられる。 In order to solve the above problems, an elevator system according to the present invention includes a car, a safety device provided in the car, and an electric actuator provided in the car for operating the safety device. The electric actuator includes a movable member, an electromagnet for attracting the movable member in a standby state of the electric actuator, a rod connected to the movable member, and a brake actuating member connected to an end of the rod. , and when the excitation of the electromagnet is stopped and the rod is driven, the brake shoe of the safety device is pushed up by the brake shoe actuating member.
　本発明によれば、非常止め装置の作動機構が占有するスペースを低減できるとともに、作動機構の設置位置の自由度が向上する。 According to the present invention, the space occupied by the actuating mechanism of the safety device can be reduced, and the degree of freedom in the installation position of the actuating mechanism is improved.
　上記した以外の課題、構成および効果は、以下の実施形態の説明により明らかにされる。 Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.
実施例であるエレベータ装置の概略構成図である。1 is a schematic configuration diagram of an elevator apparatus that is an embodiment; FIG. 実施例における電動作動器の機構部を示す正面図である。It is a front view which shows the mechanism part of the electric actuator in an Example. 実施例における電動作動器の機構部を示す正面図である。It is a front view which shows the mechanism part of the electric actuator in an Example. 実施例における電動作動器の機構部を示す側面図である。FIG. 3 is a side view showing the mechanical portion of the electric actuator in the example; 変形例における電動作動器の機構部を示す側面図である。It is a side view which shows the mechanism part of the electric actuator in a modification.
　以下、本発明の一実施形態であるエレベータ装置について、実施例により、図面を用いながら説明する。なお、各図において、参照番号が同一のものは同一の構成要件あるいは類似の機能を備えた構成要件を示している。 Hereinafter, an elevator apparatus that is one embodiment of the present invention will be described by way of an example using the drawings. In each figure, the same reference numbers denote the same components or components with similar functions.
　図１は、本発明の一実施例であるエレベータ装置の概略構成図である。 FIG. 1 is a schematic configuration diagram of an elevator system that is one embodiment of the present invention.
　図１に示すように、エレベータ装置は、乗りかご１と、電動作動器１０と、駆動機構（１２，１００など）と、非常止め装置２とを備えている。 As shown in FIG. 1, the elevator system includes a car 1, an electric actuator 10, a drive mechanism (12, 100, etc.), and a safety device 2.
　乗りかご１は、建築物に設けられる昇降路内に主ロープ（図示せず）により吊られており、ガイド装置（図示せず）を介してガイドレール４に摺動可能に係合している。駆動装置（巻上機：図示せず）により主ロープが摩擦駆動されると、乗りかご１は昇降路内を昇降する。 A car 1 is suspended by a main rope (not shown) in a hoistway provided in a building, and is slidably engaged with a guide rail 4 via a guide device (not shown). . When the main rope is friction-driven by a driving device (hoisting machine: not shown), the car 1 ascends and descends in the hoistway.
　図示しない速度検出装置が、乗りかご１に備えられ、昇降路内における乗りかご１の昇降速度を常時検出する。したがって、速度検出装置により、乗りかご１の昇降速度が所定の過速度を超えたことを検出することができる。 A speed detection device (not shown) is provided in the car 1 and constantly detects the ascending/descending speed of the car 1 in the hoistway. Therefore, the speed detector can detect that the elevator car 1 has exceeded a predetermined overspeed.
　本実施例では、速度検出装置は、画像センサを備え、画像センサによって取得されるガイドレール４の表面状態の画像情報に基づいて、乗りかご１の速度を検出する。例えば、速度検出装置は、所定時間における画像特徴量の移動距離から速度を算出する。 In this embodiment, the speed detection device is provided with an image sensor, and detects the speed of the car 1 based on the image information of the surface condition of the guide rail 4 acquired by the image sensor. For example, the speed detection device calculates the speed from the moving distance of the image feature amount in a predetermined time.
　なお、速度検出装置は、乗りかごの移動とともに回転するロータリーエンコーダの出力信号に基づいて、乗りかごの速度を算出してもよい。 Note that the speed detection device may calculate the speed of the car based on the output signal of a rotary encoder that rotates as the car moves.
　電動作動器１０は、本実施例では電磁作動器であり、乗りかご１の下部に配置される。また、駆動機構（１２，１００など）も乗りかご１の下部に配置される。 The electric actuator 10 is an electromagnetic actuator in this embodiment and is arranged at the bottom of the car 1 . A drive mechanism (12, 100, etc.) is also arranged in the lower part of the car 1. As shown in FIG.
　電動作動器１０が作動すると、制動子起動部材１００によって、非常止め装置２の制動子２００が押し上げられる。すなわち、制動子起動部材１００によって、制動子２００が起動される。これにより、非常止め装置２が動作する。 When the electric actuator 10 operates, the brake shoe activating member 100 pushes up the brake shoe 200 of the safety device 2 . That is, the brake shoe 200 is activated by the brake shoe activation member 100 . As a result, the safety device 2 operates.
　なお、電動作動器１０および駆動機構（１２，１００など）の詳細については後述する。 The details of the electric actuator 10 and the drive mechanism (12, 100, etc.) will be described later.
　非常止め装置２は、乗りかご１の左右に一台ずつ配置される。各非常止め装置２が備える一対の制動子２００は、制動位置および非制動位置の間で可動であり、制動位置においてガイドレール４を挟持する。さらに、非常止め装置２は、乗りかご１の下降により乗りかご１に対して相対的に上昇すると、制動子２００とガイドレール４との間に作用する摩擦力により、制動力を生じる。これにより、非常止め装置２は、乗りかご１が過速状態に陥ったときに作動し、乗りかご１を非常停止させる。 The safety devices 2 are arranged one by one on the left and right sides of the car 1. A pair of brake elements 200 included in each safety device 2 is movable between a braking position and a non-braking position, and sandwiches the guide rail 4 at the braking position. Further, when the safety device 2 rises relative to the car 1 due to the descent of the car 1, the frictional force acting between the brake shoe 200 and the guide rail 4 produces a braking force. As a result, the safety device 2 is actuated when the car 1 is in an overspeed condition to bring the car 1 to an emergency stop.
　本実施例のエレベータ装置は、ガバナロープを用いない、いわゆるロープレスガバナシステムを備えるものであり、乗りかご１の昇降速度が定格速度を超えて第１過速度（例えば、定格速度の１．３倍を超えない速度）に達すると、駆動装置（巻上機）の電源およびこの駆動装置を制御する制御装置の電源が遮断される。また、乗りかご１の下降速度が第２過速度（例えば、定格速度の１．４倍を超えない速度）に達すると、乗りかご１に設けられる電動作動器１０が非常止め装置２を作動させて、乗りかご１が非常停止される。 The elevator system of this embodiment has a so-called ropeless governor system that does not use a governor rope. ), the power supply to the drive (hoist) and to the control device controlling this drive is cut off. Further, when the descending speed of the car 1 reaches a second overspeed (for example, a speed not exceeding 1.4 times the rated speed), the electric actuator 10 provided in the car 1 operates the safety device 2. Then, the car 1 is brought to an emergency stop.
　本実施例において、ロープレスガバナシステムは、前述の速度検出装置と、速度検出装置の出力信号に基づいて乗りかご１の過速状態を判定する安全制御装置と、から構成される。この安全制御装置は、速度検出装置の出力信号に基づいて乗りかご１の速度を計測し、計測される速度が第１過速度に達したと判定すると、駆動装置（巻上機）の電源およびこの駆動装置を制御する制御装置の電源を遮断するための指令信号を出力する。また、安全制御装置は、計測される速度が第２過速度に達したと判定すると、電動作動器１０を作動するための指令信号を出力する。 In this embodiment, the ropeless governor system is composed of the aforementioned speed detection device and a safety control device that determines the overspeed state of the car 1 based on the output signal of the speed detection device. This safety control device measures the speed of the car 1 based on the output signal of the speed detection device, and when it is determined that the measured speed has reached the first overspeed, the power supply of the drive device (hoisting machine) and It outputs a command signal for shutting off the power supply of the control device that controls this drive device. Further, when the safety control device determines that the measured speed has reached the second overspeed, it outputs a command signal for operating the electric actuator 10 .
　前述のように、非常止め装置２が備える一対の制動子が制動子起動部材１００によって起動されると、一対の制動子がガイドレール４を挟持する。 As described above, when the pair of brakes provided in the safety device 2 are activated by the brakes activating member 100, the pair of brakes sandwich the guide rail 4.
　図２は、本実施例における電動作動器１０および駆動機構の機構部を示す、図１の設置状態における正面図である。なお、図２において、非常止め装置は非制動状態であり、電動作動器１０は非作動状態（待機状態）にある。すなわち、エレベータ装置は通常状態である。 FIG. 2 is a front view in the installation state of FIG. 1, showing the electric actuator 10 and the mechanical portion of the drive mechanism in this embodiment. In FIG. 2, the safety device is in a non-braking state, and the electric actuator 10 is in a non-operating state (standby state). That is, the elevator installation is in its normal state.
　エレベータ装置が通常運転されているとき、電動作動器１０は待機状態にある。待機状態においては、可動部材３４が、励磁されている電磁石３５に吸引されている。これにより、駆動ばね１３（圧縮ばね）の付勢力に抗して、可動部材３４と押圧部材１５（ばね座）を接続する接続ブラケット３８の動きが拘束されている。なお、可動部材３４における少なくとも電磁石３５と吸着する部分は磁性体からなる。 The electric actuator 10 is in a standby state when the elevator system is in normal operation. In the standby state, the movable member 34 is attracted to the energized electromagnet 35 . Thereby, the movement of the connection bracket 38 that connects the movable member 34 and the pressing member 15 (spring seat) is restrained against the biasing force of the drive spring 13 (compression spring). At least the portion of the movable member 34 that is attracted to the electromagnet 35 is made of a magnetic material.
　ロッド２１は、押圧部材１５を貫通している。押圧部材１５は、ロッド２１に固定されている。固定部材１４は、かご下に位置する乗りかご１の構造部材（図示せず）、たとえば、かご下枠などに固定されている。ロッド２１は、固定部材１４を、摺動可能に貫通している。ロッド２１は、駆動ばね１３に挿通されている。駆動ばね１３は、固定部材１４と押圧部材１５の間に位置している。駆動ばね１３の一端および他端は、それぞれ、固定部材１４および押圧部材１５に当接する。電動作動器１０の待機状態では、駆動ばね１３は、固定部材１４および押圧部材１５によって押圧される。このため、駆動ばね１３は、圧縮され、弾性エネルギを蓄積している。いわば、駆動ばね１３は、付勢力を蓄えている。 The rod 21 penetrates through the pressing member 15 . The pressing member 15 is fixed to the rod 21 . The fixed member 14 is fixed to a structural member (not shown) of the car 1 positioned below the car, such as a car lower frame. The rod 21 slidably penetrates the fixed member 14 . The rod 21 is passed through the drive spring 13 . The drive spring 13 is positioned between the fixed member 14 and the pressing member 15 . One end and the other end of the drive spring 13 abut against the fixing member 14 and the pressing member 15, respectively. In the standby state of the electric actuator 10 , the drive spring 13 is pressed by the fixing member 14 and the pressing member 15 . Therefore, the drive spring 13 is compressed and stores elastic energy. In other words, the drive spring 13 stores biasing force.
　左右一対の制動子起動部材１００の各々には、ロッド２１が接続される。各ロッド２１は、リンク１２およびリンク抑えピン３０からなるリンク機構により、連動して動作可能である。 A rod 21 is connected to each of the pair of left and right brake shoe activation members 100 . Each rod 21 can be operated in conjunction with a link mechanism consisting of a link 12 and a link holding pin 30 .
　本実施例では、制動子起動部材１００はテーパ部を有し、テーパ面が制動子２００の底部に接触している。 In this embodiment, the brake shoe activating member 100 has a tapered portion, and the tapered surface is in contact with the bottom of the brake shoe 200 .
　本実施例では、制動子起動部材１００は、バー状の金属部材からなる。金属部材としては、バルク部材や、折り曲げ成形された板状部材などが適用できる。なお、制動子２００を支持しかつ押し上げるのに十分な強度を有していれば、バー状の金属部材に限らず、様々な形状および材料の部材が適用できる。 In this embodiment, the brake shoe activation member 100 is made of a bar-shaped metal member. As the metal member, a bulk member, a bent plate member, or the like can be applied. It should be noted that members of various shapes and materials can be applied without being limited to bar-shaped metal members as long as they have sufficient strength to support and push up the brake shoe 200 .
　図３は、本実施例における電動作動器１０および駆動機構の機構部を示す、図１の設置状態における正面図である。なお、図３において、非常止め装置は制動状態であり、電動作動器１０は作動状態にある。すなわち、エレベータ装置は停止状態である。 FIG. 3 is a front view in the installation state of FIG. 1, showing the electric actuator 10 and the mechanical portion of the drive mechanism in this embodiment. In FIG. 3, the safety device is in a braking state, and the electric actuator 10 is in an operating state. That is, the elevator installation is in a stopped state.
　図示しない安全制御装置からの指令により、電磁石３５の励磁が停止されると、可動部材３４に作用する吸引力が消失するので、駆動ばね１３の付勢力が開放されてロッド２１が駆動される。このとき、リンク機構によって、接続ブラケット３８と接続されないロッド２１も、連動して駆動される。これにより、制動子起動部材１００のテーパ面によって、制動子２００が押し上げられる。 When the excitation of the electromagnet 35 is stopped by a command from a safety control device (not shown), the attractive force acting on the movable member 34 disappears, so the biasing force of the drive spring 13 is released and the rod 21 is driven. At this time, the rod 21 that is not connected to the connection bracket 38 is also driven by the link mechanism. Thereby, the brake shoe 200 is pushed up by the tapered surface of the brake shoe activating member 100 .
　電動作動器１０を待機状態に復帰させるためには、次に述べるように、電動作動器１０を動作させる。 In order to return the electric actuator 10 to the standby state, the electric actuator 10 is operated as described below.
　電動作動器１０は、可動部材３４を駆動するために基板部の平面部上に位置する送りねじ３６（例えば、台形ねじ）を有する。送りねじ３６は、基板部の平面上に固定される第１の支持部材４１および第２の支持部材４２によって回転可能に支持される。電磁石３５は、ナット部を備えており、このナット部が送りねじ３６と螺合する。送りねじ３６は、モータ３７によって回転駆動される。 The electric actuator 10 has a feed screw 36 (for example, a trapezoidal screw) located on the planar portion of the base portion for driving the movable member 34 . The feed screw 36 is rotatably supported by a first support member 41 and a second support member 42 fixed on the plane of the substrate portion. The electromagnet 35 has a nut portion that is screwed onto the feed screw 36 . The feed screw 36 is rotationally driven by a motor 37 .
　なお、基板部としては、金属板などの板状部材を用いてもよいし、かご下枠を構成する鋼材の平面部を用いてもよい。 A plate-shaped member such as a metal plate may be used as the substrate portion, or a flat portion of steel material that constitutes the cage lower frame may be used.
　電動作動器１０を待機状態に復帰させるには、まず、モータ３７を駆動して送りねじ３６を回転させる。回転する送りねじ３６と電磁石３５が備えるナット部とによって、モータ３７の回転が、送りねじ３６の軸方向に沿った電磁石３５の直線的移動に変換される。これにより、電磁石３５は、可動部材３４に近づいて、可動部材３４に接触する。図示されないスイッチ、もしくはモータ３７の負荷電流によって、電磁石３５と可動部材３４の接触が検知されたら、電磁石３５を励磁するとともに、モータ３７を停止する。可動部材３４は、電磁力が作用して、電磁石３５に吸着する。可動部材３４が電磁石３５に吸着したら、電磁石３５の励磁を継続しながら、モータ３７の回転方向を逆にして、送りねじ３６を逆転させる。これにより、可動部材３４は、電磁石３５とともに、待機時の位置まで移動する。 In order to return the electric actuator 10 to the standby state, first, the motor 37 is driven to rotate the feed screw 36 . Rotation of the motor 37 is converted into linear movement of the electromagnet 35 along the axial direction of the feed screw 36 by the rotating feed screw 36 and the nut portion of the electromagnet 35 . As a result, the electromagnet 35 approaches the movable member 34 and comes into contact with the movable member 34 . When contact between the electromagnet 35 and the movable member 34 is detected by a switch (not shown) or the load current of the motor 37, the electromagnet 35 is excited and the motor 37 is stopped. The movable member 34 is attracted to the electromagnet 35 by electromagnetic force. When the movable member 34 is attracted to the electromagnet 35, the direction of rotation of the motor 37 is reversed while the excitation of the electromagnet 35 is continued, and the feed screw 36 is reversed. As a result, the movable member 34 moves together with the electromagnet 35 to the standby position.
　図４は、本実施例における電動作動器１０の機構部を示す、図１の設置状態における側面図である。すなわち、図４は、図２におけるＡ視点図である。 FIG. 4 is a side view showing the mechanical portion of the electric actuator 10 in this embodiment in the installation state of FIG. That is, FIG. 4 is a perspective view of A in FIG.
　図４に示すように、ロッド２１は、一対の制動子２００の直下部に向かって延びている。したがって、ロッド２１の端部に接続される制動子起動部材１００は、制動子２００と直接接触する。 As shown in FIG. 4 , the rod 21 extends directly below the pair of brake pads 200 . Therefore, the brake shoe actuating member 100 connected to the end of the rod 21 is in direct contact with the brake shoe 200 .
　なお、本実施例における非常止め装置は、公知技術による非常止め装置と異なり、長手方向が乗りかごの高さ方向に延びる引上げロッドを有していない。他の構成は公知技術による非常止め装置と同様である。例えば、図４に示すように、制動子２００、並びに制動子２００を押圧する板ばねなどの弾性体は、筐体２０１（もしくは枠体）に収納されている。 It should be noted that the safety device in this embodiment does not have a lifting rod whose longitudinal direction extends in the height direction of the car, unlike safety devices according to known technologies. Other configurations are the same as those of known safety devices. For example, as shown in FIG. 4, the brake 200 and an elastic body such as a leaf spring that presses the brake 200 are housed in a housing 201 (or a frame).
　図５は、一変形例であるエレベータ装置における電動作動器１０の機構部を示す、図４と同様の側面図である。 FIG. 5 is a side view, similar to FIG. 4, showing the mechanical portion of the electric actuator 10 in the elevator system as a modified example.
　本変形例では、一対の制動子２００の下部にレバー２０３が接続される。レバー２０３は、一対の制動子２００の側方、すなわち制動子２００の下部からロッド２１の長手方向に対して垂直な方向へ延びている。レバー２０３の延在部の端部すなわち自由端部が、制動子起動部材１００のテーパ面に接触する。 In this modified example, a lever 203 is connected to the lower part of the pair of brake pads 200 . The lever 203 extends laterally of the pair of brake pads 200 , that is, from the lower part of the brake pads 200 in a direction perpendicular to the longitudinal direction of the rod 21 . The end or free end of the extension of lever 203 contacts the tapered surface of brake shoe actuating member 100 .
　本変形例では、レバー２０３が制動子起動部材１００によって押し上げられることにより、制動子２００が押し上げられる。 In this modified example, the lever 203 is pushed up by the brake shoe activating member 100, thereby pushing the brake shoe 200 up.
　上述の実施例によれば、制動子起動部材１００によって制動子２００が押し上げられるので、非常止め装置の作動機構（電動作動器１０および駆動機構（１２，２００など））が占有するスペースを低減できるとともに、作動機構の設置位置の自由度が向上する。 According to the above-described embodiment, the brake 200 is pushed up by the brake actuating member 100, so that the space occupied by the operating mechanism of the safety device (the electric actuator 10 and the drive mechanism (12, 200, etc.)) can be reduced. At the same time, the degree of freedom of the installation position of the operating mechanism is improved.
　なお、本発明は前述した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、前述した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、実施例の構成の一部について、他の構成の追加・削除・置き換えをすることが可能である。 It should be noted that the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations. Moreover, it is possible to add, delete, or replace a part of the configuration of the embodiment with another configuration.
　例えば、非常止め装置が、かご上方に設置される場合、電動作動器はかご上に設けてもよい。 For example, if the safety device is installed above the car, the electric actuator may be installed above the car.
　また、エレベータ装置は、機械室を有するものでもよいし、いわゆる機械室レスエレベータでもよい。 Also, the elevator apparatus may have a machine room or may be a so-called machine room-less elevator.
１…乗りかご、２…非常止め装置、４…ガイドレール、１０…電動作動器、１２…リンク、１３…駆動ばね、１４…固定部材、１５…押圧部材、２１…ロッド、３０…リンク抑えピン、３４…可動部材、３５…電磁石、３６…送りねじ、３７…モータ、３８…接続ブラケット、４１…支持部材、４２…支持部材、１００…制動子起動部材、２００…制動子、２０３…レバー DESCRIPTION OF SYMBOLS 1... Car, 2... Emergency stop device, 4... Guide rail, 10... Electric actuator, 12... Link, 13... Drive spring, 14... Fixed member, 15... Pressing member, 21... Rod, 30... Link holding pin , 34... Movable member 35... Electromagnet 36... Feed screw 37... Motor 38... Connection bracket 41... Support member 42... Support member 100... Brake shoe activating member 200... Brake shoe 203... Lever

Claims (7)

  1. 　乗りかごと、
    　前記乗りかごに設けられる非常止め装置と、
    　前記乗りかごに設けられ、前記非常止め装置を動作させる電動作動器と、
    を備えるエレベータ装置において、
    　前記電動作動器は、
    　可動部材と、
    　前記電動作動器の待機状態において、前記可動部材を吸引する電磁石と、
    　前記可動部材に接続されるロッドと、
    　前記ロッドの端部に接続される制動子起動部材と、
    を備え、
    　前記電磁石の励磁が停止され、前記ロッドが駆動されると、前記制動子起動部材によって前記非常止め装置の制動子が押し上げられることを特徴とするエレベータ装置。     car and
    a safety device provided in the car;
    an electric actuator provided in the car for operating the safety device;
    In an elevator installation comprising
    The electric actuator is
    a movable member;
    an electromagnet that attracts the movable member in a standby state of the electric actuator;
    a rod connected to the movable member;
    a brake shoe activation member connected to the end of the rod;
    with
    An elevator apparatus according to claim 1, wherein when the excitation of the electromagnet is stopped and the rod is driven, the brake shoe of the safety device is pushed up by the brake shoe actuating member.
  2. 　請求項１に記載のエレベータ装置において、
    　前記制動子起動部材はテーパ面を有し、
    　前記テーパ面によって前記制動子が押し上げられることを特徴とするエレベータ装置。     The elevator installation of claim 1, wherein
    the brake shoe actuating member has a tapered surface;
    An elevator apparatus, wherein the brake shoe is pushed up by the tapered surface.
  3. 　請求項２に記載のエレベータ装置において、
    　前記テーパ面は、前記制動子の下部に直接接触していることを特徴とするエレベータ装置。     An elevator installation according to claim 2, wherein
    An elevator apparatus, wherein the tapered surface is in direct contact with the lower portion of the brake shoe.
  4. 　請求項２に記載のエレベータ装置において、
    　前記テーパ面は、前記制動子に接続され、前記制動子の側方へ延びるレバーに接触していることを特徴とするエレベータ装置。     An elevator installation according to claim 2, wherein
    An elevator apparatus according to claim 1, wherein said tapered surface is in contact with a lever connected to said brake shoe and extending laterally of said brake shoe.
  5. 　請求項１に記載のエレベータ装置において、
    　前記ロッドは、ばね力によって駆動されることを特徴とするエレベータ装置。     The elevator installation of claim 1, wherein
    An elevator installation, wherein said rod is driven by a spring force.
  6. 　請求項１に記載のエレベータ装置において、
    　前記電動作動器は、
    　前記電磁石と螺合する送りねじと、
    　前送りねじを回転駆動するモータと
    を備えることを特徴とするエレベータ装置。     The elevator installation of claim 1, wherein
    The electric actuator is
    a feed screw that screws together with the electromagnet;
    and a motor for rotationally driving a forward feed screw.
  7. 　請求項１に記載のエレベータ装置において、
    　前記電動作動器は、前記乗りかごの下方に設けられることを特徴とするエレベータ装置。     The elevator installation of claim 1, wherein
    An elevator apparatus, wherein the electric actuator is provided below the car.
PCT/JP2021/031300 2021-08-26 2021-08-26 Elevator device WO2023026423A1 (en)

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JP2023543572A JPWO2023026423A1 (en) 2021-08-26 2021-08-26
PCT/JP2021/031300 WO2023026423A1 (en) 2021-08-26 2021-08-26 Elevator device
EP21954424.4A EP4393861A1 (en) 2021-08-26 2021-08-26 Elevator device
CN202180101528.6A CN117794838A (en) 2021-08-26 2021-08-26 Elevator device

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Application Number Priority Date Filing Date Title
PCT/JP2021/031300 WO2023026423A1 (en) 2021-08-26 2021-08-26 Elevator device

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005115904A1 (en) * 2004-05-25 2005-12-08 Mitsubishi Denki Kabushiki Kaisha Emergency stop device of elevator
JP2014065589A (en) * 2012-09-26 2014-04-17 Toshiba Corp Elevator
WO2020110437A1 (en) * 2018-11-28 2020-06-04 株式会社日立製作所 Emergency stop device and elevator
US20200207576A1 (en) * 2018-12-31 2020-07-02 Kone Corporation Elevator car parking brake

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005115904A1 (en) * 2004-05-25 2005-12-08 Mitsubishi Denki Kabushiki Kaisha Emergency stop device of elevator
JP2014065589A (en) * 2012-09-26 2014-04-17 Toshiba Corp Elevator
WO2020110437A1 (en) * 2018-11-28 2020-06-04 株式会社日立製作所 Emergency stop device and elevator
US20200207576A1 (en) * 2018-12-31 2020-07-02 Kone Corporation Elevator car parking brake

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EP4393861A1 (en) 2024-07-03
CN117794838A (en) 2024-03-29
JPWO2023026423A1 (en) 2023-03-02

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