WO2022099774A1 - 一种电梯用安全轿厢装置 - Google Patents

一种电梯用安全轿厢装置 Download PDF

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Publication number
WO2022099774A1
WO2022099774A1 PCT/CN2020/130694 CN2020130694W WO2022099774A1 WO 2022099774 A1 WO2022099774 A1 WO 2022099774A1 CN 2020130694 W CN2020130694 W CN 2020130694W WO 2022099774 A1 WO2022099774 A1 WO 2022099774A1
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WO
WIPO (PCT)
Prior art keywords
elevator
unit
splint
car body
worm
Prior art date
Application number
PCT/CN2020/130694
Other languages
English (en)
French (fr)
Inventor
葛延标
Original Assignee
苏州德拉乐电梯有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州德拉乐电梯有限公司 filed Critical 苏州德拉乐电梯有限公司
Priority to DE212020000575.3U priority Critical patent/DE212020000575U1/de
Publication of WO2022099774A1 publication Critical patent/WO2022099774A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027Applications 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02Cages, i.e. cars
    • B66B11/0226Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18Braking 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 invention relates to the technical field of elevator safety, in particular to a safety car device for an elevator.
  • Elevators are necessary transportation equipment for high floors, which are used to transport people or goods to preset floors.
  • Elevator safety gear is a safety device that emergency stops the car and clamps it on the guide rail when the elevator has very serious faults such as overspeed and broken rope under the control of the speed limiter. It provides the safe operation of the elevator. effective protection.
  • the technical problem to be solved by the present invention is to provide a safety car device for an elevator to solve the problem that passengers cannot save themselves when the safety gear is locked in the elevator car in the prior art.
  • the present invention provides the following technical solutions:
  • a safety car device for an elevator comprising a car body and a safety unit arranged inside the car body and used for braking the car body when the car body stalls, the safety unit is arranged in a control compartment, so
  • the security unit includes:
  • the splint unit is arranged on both sides of the guide rail fixed on the elevator shaft and on both sides of the car body, and the splint unit is used for braking the elevator;
  • a splint drive unit the splint drive unit is connected with the splint unit, and the splint drive unit is used to drive the splint units to approach or move away from each other;
  • the main drive unit is connected with the splint drive unit, the main drive unit is used to identify the stall state of the elevator, and the main drive unit controls the splint units to approach or move away from each other through the splint drive unit;
  • the manual control unit is used for manually controlling the clamping plate driving unit so that the clamping force of the clamping plate unit on the guide rail is gradually reduced.
  • the car body is divided into a passenger compartment and a control compartment by a partition, and an operation cover is provided on the partition.
  • the clamping plate unit includes a clamping plate, a clamping block and a first spring, the clamping block and the clamping plate are slidably connected, the first spring is sleeved on the clamping block, and two ends of the first spring are respectively connected with the clamping block and the clamping plate. Contact, the first spring is in a compressed state, and the clamping blocks are pressed against the guide rail when the clamping plates are close to each other.
  • the splint drive unit includes a lead screw and a drive rod.
  • the lead screw is provided with two sets of threads with opposite directions of rotation.
  • the middle of the lever is fixedly connected with a first worm gear
  • the drive rod is mounted on an inner bracket arranged inside the car body, and two ends of the drive rod are provided with worms, which are engaged with the first worm gear.
  • rods are further provided on both sides of the inner bracket, and the guide rods are slidably connected with the splint.
  • a roller is also installed on the inner bracket, the roller is installed on the inner bracket through a bearing, a roller groove is provided on the guide rail, the roller is arranged in the roller groove, and the two sides of the guide rail are provided with a roller groove.
  • a fixed wing plate is also provided, and the fixed wing plate is provided with a mounting hole.
  • the manual control unit includes a second worm gear and a second worm
  • the second worm gear is fixedly connected to the drive rod
  • the second worm is installed in the control chamber through a bearing
  • the second worm The worm is engaged with the second worm wheel
  • the second worm is provided with a hand wheel.
  • the main drive unit includes a drive motor, a power supply module and a control module, a drive wheel is fixedly connected to the drive motor, a driven wheel is fixedly connected to the drive rod, and the drive wheel is connected to the slave
  • the power supply module includes a battery and a charging and discharging module, the battery is used to supply power to the main drive unit when the elevator is powered off, the charging and discharging module is used for intelligently supplying power and lifting and lowering voltage to the battery, and the charging and discharging module It is electrically connected with the battery and the drive motor; the control module is used to detect the stall state and control the power on and off of the drive motor; the control module includes a microprocessor and an acceleration sensor.
  • the present invention has the following beneficial effects compared with the prior art:
  • the present invention can control the clamping force of the splint unit on the guide rail to gradually decrease through the manual control unit, so that the elevator can slowly descend to the elevator entrance, so that passengers can pry open the elevator door for self-rescue.
  • the present invention can control the elevator to brake the elevator in the stalled state, prevent the elevator from falling, so that the elevator can effectively protect the safety of passengers.
  • FIG. 1 is a schematic structural diagram of a safety car device for an elevator.
  • Fig. 2 is a schematic structural diagram of a safety unit in a safety car device for an elevator.
  • Fig. 3 is a schematic structural diagram of a guide rail in a safety car device for an elevator.
  • Fig. 4 is a schematic structural diagram of a clamping plate in a safety car device for an elevator.
  • a safety car device for an elevator includes a car body 1 and a safety unit arranged inside the car body 1 for braking the car body 1 when the car body 1 stalls.
  • the interior of the car body 1 is divided into a passenger compartment 11 and a control compartment 12 by a partition, an operation cover 15 is provided on the partition, the safety unit is arranged in the control compartment 12, and the safety unit includes:
  • the splint unit 3 is arranged on both sides of the guide rail 2 fixed on the elevator shaft and arranged on both sides of the car body 1, and the splint unit 3 is used for braking the elevator;
  • the clamping plate unit 3 includes a clamping plate 31 , a clamping block 32 and a first spring 33 , the clamping block 32 is slidingly connected with the clamping plate 31 , the first spring 33 is sleeved on the clamping block 32 and the first spring 33 is The two ends are in contact with the clamping block 32 and the clamping plate 31 respectively, the first spring 33 is in a compressed state, the clamping plate 31 presses the clamping block 32 on the guide rail 2 when they are close to each other, and the first spring 33 is further compressed. When the clamping force of 33, the clamp block 32 is still clamped on the guide rail 2.
  • the clamping force of the clamp block 32 on the guide rail 2 is reduced, the friction force between the clamp block 32 and the guide rail 2 is reduced, and the car body 1 is Slowly move downward under the action of gravity.
  • the clamping plates 31 are controlled to approach each other again.
  • the clamping block 32 fixes the car body 1 to the guide rail 2 again.
  • the passenger can pry open the car door of the car body 1;
  • the splint drive unit 6, the splint drive unit 6 is connected with the splint unit 3, and the splint drive unit 6 is used to drive the splint units 3 to approach or move away from each other;
  • the splint drive unit 6 includes a lead screw 61 and a drive rod 63.
  • the lead screw 61 is provided with two sets of threads with opposite directions of rotation.
  • the middle of the lever 61 is fixedly connected with a first worm gear 62
  • the driving rod 63 is mounted on the inner bracket 14 arranged inside the control compartment 12
  • the two ends of the driving rod 63 are provided with worms 64
  • the worms 64 are engaged with the first worm gear 62
  • the drive rod 63 drives the worm 64 to rotate
  • the worm 64 drives the lead screw 61 to rotate
  • the main drive unit 7, the main drive unit 7 is connected with the splint drive unit 6, the main drive unit 7 is used to identify the elevator stall state and the main drive unit 7 controls the splint units 3 to approach or move away from each other through the splint drive unit 6;
  • the main drive unit 7 includes a drive motor 71, a power supply module and a control module.
  • a drive wheel 72 is fixedly connected to the drive motor 71, and a driven wheel 73 is fixedly connected to the drive rod 63.
  • the drive wheel 72 is connected to the slave.
  • the driving wheel 73 is connected, and when the driving motor 71 is energized and rotated, the driving motor 71 drives the driving rod 63 to rotate through the driving wheel 72 and the driven wheel 73;
  • the power supply module includes a battery and a charge-discharge module.
  • the battery is used to supply power to the main drive unit 7 when the elevator is powered off.
  • the charge-discharge module is used to intelligently supply power and boost voltage to the battery.
  • the charge-discharge module is connected to the battery. is electrically connected to the driving motor 71, and in some examples, the charging and discharging module is provided with a charging and discharging circuit, a power detection circuit, an intelligent power-off circuit and a transformer circuit;
  • the control module is used to detect the stall state and control the power on and off of the drive motor 71.
  • the control module includes a microprocessor and an acceleration sensor, the acceleration sensor is used to detect the acceleration of the elevator, and the acceleration sensor is related to the acceleration sensor.
  • the microprocessor is electrically connected to the power supply module, the microprocessor is electrically connected to the power supply module, the acceleration sensor transmits the detected elevator acceleration value to the microprocessor according to the preset frequency, and the microprocessor judges whether the acceleration value exceeds the threshold value , when the acceleration value exceeds the threshold, the microprocessor controls the power supply module to supply power to the drive motor 71, so that the drive motor 71 starts;
  • two sides of the inner bracket 14 are further provided with guide rods 5, the guide rods 5 are slidably connected with the clamping plate 31, and the guiding rods 5 are used to prevent the clamping plate 31 from rotating;
  • the manual control unit 8 is used to manually control the splint drive unit 6, so that passengers can save themselves when the elevator emergency stops;
  • the manual control unit 8 includes a second worm wheel 81 and a second worm 82, the second worm wheel 81 is fixedly connected to the drive rod 63, the second worm 82 is installed in the control chamber 12 through a bearing, the second The worm 82 is engaged with the second worm wheel 81, and the second worm 82 is provided with a hand wheel 83.
  • the hand wheel 83 is rotated, and the hand wheel 83 drives the second worm 82 to rotate, and the second worm 82 drives the second worm wheel 81 to rotate,
  • the second worm wheel 81 drives the hand wheel 83 to rotate;
  • the clamping plate 31 is a flat plate, one end of the clamping plate 31 is provided with a threaded hole, and one end of the clamping plate 31 away from the threaded hole is provided with a spring sleeve sleeved on the outer side of the first spring 33, There is a cylindrical shape with an opening, and the closed end of the spring sleeve is provided with a first through hole for installing the clamping block 32.
  • the clamping block 32 is provided with a sliding rod.
  • a spring 33 is sleeved on the sliding rod, and a limit pin is installed on the end of the clamp block 32 away from the spring sleeve. The limit pin is used to prevent the clamp block 32 from disengaging from the clamp plate 31 and to control the first spring 33 is in a compressed state;
  • the driving wheel 72 and the driven wheel 73 are both gears, and the driving motor 71 and the driving wheel 72 are engaged;
  • a crowbar is also placed in the control compartment 12 .
  • the inner bracket 14 is further mounted with a roller 4, and the roller 4 is mounted on the inner bracket 14 through a bearing.
  • the guide rail 2 is provided with a roller groove 21
  • the roller 4 is arranged in the roller groove 21, the two sides of the guide rail 2 are also provided with fixed wings 22, and the fixed wings 22 are provided with installation holes; the roller 4 is used to limit the position of the car body 1 .
  • the acceleration of the elevator exceeds the preset acceleration.
  • the acceleration value detected by the acceleration sensor exceeds the threshold value, and the microprocessor controls the power supply module to supply power to the drive motor 71, the drive motor 71 is powered on and rotates, and the drive motor 71 is driven by The wheel 72 and the driven wheel 73 drive the driving rod 63 to rotate.
  • the driving rod 63 drives the lead screw 61 to rotate through the worm 64 and the first worm wheel 62.
  • the lead screw 61 rotates, it drives the splint 31 to approach each other, and the splint 31 clamps the clamp block 32 on the guide rail.
  • the passenger When the passenger rescues himself, the passenger opens the operating cover 15 and turns the hand wheel 83, the hand wheel 83 drives the second worm 82 to rotate, and the second worm 82 drives the driving rod 63 to rotate in the reverse direction through the second worm gear 81.
  • the driving rod 63 rotates in the reverse direction
  • the clamping plates 31 are far away from each other.
  • the clamping block 32 is still clamped on the guide rail 2, and the clamping force of the clamping block 32 on the guide rail 2 is slowly reduced. The friction force between the two parts decreases slowly, and the car body 1 slides down slowly under the action of gravity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

一种电梯用安全轿厢装置,涉及电梯安全技术领域,包括轿厢本体(1)和设置在轿厢本体(1)内部、用于在轿厢本体(1)失速时对轿厢本体(1)制动的安全单元,安全单元包括夹板单元(3),夹板单元(3)设在固定于电梯井上且设置于轿厢本体(1)两侧的导轨(2)的两侧,夹板单元(3)用于对电梯制动;夹板驱动单元(6),夹板驱动单元(6)与夹板单元(3)连接,夹板驱动单元(6)用于驱动夹板单元(3)互相靠近或远离主驱动单元(7),主驱动单元(7)与夹板驱动单元(6)连接,主驱动单元(7)用于识别电梯失速状态且主驱动单元(7)通过夹板驱动单元(6)控制夹板单元(3)互相靠近或远离;手动操控单元(8),手动操控单元(8)用于手动控制夹板驱动单元(6)使得夹板单元(3)对导轨(2)的夹紧力逐渐减小,从而使得电梯能够缓慢下降到电梯口处,从而使得乘客能够撬开电梯门进行自救。

Description

一种电梯用安全轿厢装置 技术领域
本发明涉及电梯安全技术领域,尤其涉及一种电梯用安全轿厢装置。
背景技术
随着城市化的进程,越来越多的人住上楼房,电梯是高楼层必备的运输设备,用于将人或货物运输至预设楼层。
电梯安全钳是限速器的操纵下,当电梯出现超速、断绳等非常严重的故障后,将轿厢紧急制停并夹持在导轨上的一种安全装置,它对电梯的安全运行提供有效的保护作用。
技术问题
现有技术中的安全钳在限速器的控制下夹紧电梯导轨后电梯会停留在电梯井内某一位置,此时,电梯内乘客需要等待救援人员救援,而救援人员到达电梯位置一般需要较长时间,在此期间电梯内乘客无法自救,从而造成乘客恐慌,而且,在等待救援的过程中还容易发生二次事故,例如,安全钳失效,因此,我们提出了一种电梯用安全轿厢装置。
技术解决方案
本发明要解决的技术问题是针对上述缺陷,提供一种电梯用安全轿厢装置,以解决现有技术中电梯轿厢在安全钳锁死的情况下乘客无法自救的问题。
为实现上述目的,本发明提供如下技术方案:
一种电梯用安全轿厢装置,包括轿厢本体和设置在轿厢本体内部、用于在轿厢本体失速时对轿厢本体制动的安全单元,所述安全单元设置在控制仓内,所述安全单元包括:
夹板单元,所述夹板单元设在固定于电梯井上且设置于轿厢本体两侧的导轨的两侧,所述夹板单元用于对电梯制动;
夹板驱动单元,所述夹板驱动单元与夹板单元连接,夹板驱动单元用于驱动夹板单元互相靠近或远离;
主驱动单元,所述主驱动单元与夹板驱动单元连接,所述主驱动单元用于识别电梯失速状态且主驱动单元通过夹板驱动单元控制夹板单元互相靠近或远离;
手动操控单元,所述手动操控单元用于手动控制夹板驱动单元使得夹板单元对导轨的夹紧力逐渐减小。
作为本发明进一步的方案,所述轿厢本体内由隔板分为乘客仓和控制仓,隔板上设有操作盖。
作为本发明进一步的方案,所述夹板单元包括夹板、夹块和第一弹簧,夹块与夹板滑动连接,第一弹簧套设在夹块上且第一弹簧的两端分别与夹块和夹板接触,第一弹簧处于压缩状态,夹板在互相靠近时将夹块压紧在导轨上。
作为本发明进一步的方案,所述夹板驱动单元包括丝杠和驱动杆,丝杠上设有旋向相反的两组螺纹,丝杠的两端安装在设置于控制仓内部的外支架上,丝杠的中间固定连接有第一蜗轮,所述驱动杆安装在设置于轿厢本体内部的内支架上,驱动杆的两端设有蜗杆,蜗杆与第一蜗轮啮合。
作为本发明进一步的方案,所述内支架的两侧还设有杆,所述导杆与夹板滑动连接。
作为本发明进一步的方案,所述内支架上还安装有滚轮,所述滚轮通过轴承安装在内支架上,所述导轨上设有滚轮槽,滚轮设在滚轮槽内,所述导轨的两侧还设有固定翼板,所述固定翼板上设有安装孔。
作为本发明进一步的方案,所述手动操控单元包括第二蜗轮和第二蜗杆,所述第二蜗轮固定连接到驱动杆上,所述第二蜗杆通过轴承安装在控制仓内,所述第二蜗杆与第二蜗轮啮合,第二蜗杆上设有手轮。
作为本发明进一步的方案,所述主驱动单元包括驱动电机、供电模块和控制模块,所述驱动电机上固定连接有驱动轮,所述驱动杆上固定连接有从动轮,所述驱动轮与从动轮连接;所述供电模块包括蓄电池和充放电模块,所述蓄电池用于在电梯停电时对主驱动单元供电,所述充放电模块用于对蓄电池智能供电和升降压,所述充放电模块与蓄电池和驱动电机电性连接;所述控制模块用于检测失速状态和控制驱动电机的通断电;所述控制模块包括微处理器和加速度传感器。
有益效果
综上所述,本发明与现有技术相比具有以下有益效果:
1、本发明能够通过手动操控单元控制夹板单元对导轨的夹紧力逐渐减小,从而使得电梯能够缓慢下降到电梯口处,从而使得乘客能够撬开电梯门进行自救。
2、本发明能够控制电梯在失速状态下对电梯制动,防止电梯坠落,使得电梯能够有效的保护乘客安全。
附图说明
图1为电梯用安全轿厢装置的结构示意图。
图2为电梯用安全轿厢装置中安全单元的结构示意图。
图3为电梯用安全轿厢装置中导轨的结构示意图。
图4为电梯用安全轿厢装置中夹板的结构示意图。
附图标记:1-轿厢本体,11-乘客仓,12-控制仓,13-外支架,14-内支架,15-操作盖,2-导轨,21-滚轮槽,22-固定翼板,3-夹板单元,31-夹板,32-夹块,33-第一弹簧,4-滚轮,5-导杆,6-夹板驱动单元,61-丝杠,62-第一蜗轮,63-驱动杆,64-蜗杆,7-主驱动单元,71-驱动电机,72-驱动轮,73-从动轮,8-手动操控单元,81-第二蜗轮,82-第二蜗杆,83-手轮。
本发明的实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例,基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
由图1所示,一种电梯用安全轿厢装置,包括轿厢本体1和设置在轿厢本体1内部、用于在轿厢本体1失速时对轿厢本体1制动的安全单元,所述轿厢本体1内由隔板分为乘客仓11和控制仓12,隔板上设有操作盖15,所述安全单元设置在控制仓12内,所述安全单元包括:
所述夹板单元3设在固定于电梯井上且设置于轿厢本体1两侧的导轨2的两侧,所述夹板单元3用于对电梯制动;
如图3所示,所述夹板单元3包括夹板31、夹块32和第一弹簧33,夹块32与夹板31滑动连接,第一弹簧33套设在夹块32上且第一弹簧33的两端分别与夹块32和夹板31接触,第一弹簧33处于压缩状态,夹板31在互相靠近时将夹块32压紧在导轨2上,第一弹簧33进一步压缩,当夹块32对导轨2的夹紧力达到预设值时,夹块32和导轨2之间的摩擦力能够将轿厢本体1固定到导轨2上,当夹板31向远离导轨2的方向移动时,由于第一弹簧33的作用,夹块32仍然夹紧在导轨2上,此时,夹块32对导轨2的夹紧力减小,夹块32和导轨2之间的摩擦力减小,轿厢本体1在重力的作用下缓慢向下移动,当轿厢本体1移动到电梯外门的位置时,再次控制夹板31互相靠近,此时,夹块32再次将轿厢本体1固定到导轨2上,此时,乘客可以将轿厢本体1的轿厢门撬开;
夹板驱动单元6,所述夹板驱动单元6与夹板单元3连接,夹板驱动单元6用于驱动夹板单元3互相靠近或远离;
所述夹板驱动单元6包括丝杠61和驱动杆63,丝杠61上设有旋向相反的两组螺纹,丝杠61的两端安装在设置于控制仓12内部的外支架13上,丝杠61的中间固定连接有第一蜗轮62,所述驱动杆63安装在设置于控制仓12内部的内支架14上,驱动杆63的两端设有蜗杆64,蜗杆64与第一蜗轮62啮合,当驱动杆63转动时,驱动杆63带动蜗杆64转动,蜗杆64带动丝杠61转动,丝杠61转动时能够驱动夹板31互相靠近或远离;
主驱动单元7,所述主驱动单元7与夹板驱动单元6连接,所述主驱动单元7用于识别电梯失速状态且主驱动单元7通过夹板驱动单元6控制夹板单元3互相靠近或远离;
所述主驱动单元7包括驱动电机71、供电模块和控制模块,所述驱动电机71上固定连接有驱动轮72,所述驱动杆63上固定连接有从动轮73,所述驱动轮72与从动轮73连接,当驱动电机71通电转动时,驱动电机71通过驱动轮72和从动轮73带动驱动杆63转动;
所述供电模块包括蓄电池和充放电模块,所述蓄电池用于在电梯停电时对主驱动单元7供电,所述充放电模块用于对蓄电池智能供电和升降压,所述充放电模块与蓄电池和驱动电机71电性连接,在一些示例中所述充放电模块内设有充放电电路、电量检测电路、智能断电电路和变压电路;
所述控制模块用于检测失速状态和控制驱动电机71的通断电,在一些示例中,所述控制模块包括微处理器和加速度传感器,所述加速度传感器用于检测电梯的加速度,加速度传感器与微处理器和供电模块电性连接,微处理器与供电模块电性连接,加速度传感器将检测到的电梯加速度数值按照预设频率传输到微处理器内,微处理器判断该加速度数值是否超过阈值,当该加速度数值超过阈值时,微处理器控制供电模块对驱动电机71供电,使得驱动电机71启动;
优选的,所述内支架14的两侧还设有导杆5,所述导杆5与夹板31滑动连接,所述导杆5用于防止夹板31转动;
手动操控单元8,所述手动操控单元8用于手动控制夹板驱动单元6,使得乘客在电梯急停时能够自救;
所述手动操控单元8包括第二蜗轮81和第二蜗杆82,所述第二蜗轮81固定连接到驱动杆63上,所述第二蜗杆82通过轴承安装在控制仓12内,所述第二蜗杆82与第二蜗轮81啮合,第二蜗杆82上设有手轮83,手动操作时,转动手轮83,手轮83带动第二蜗杆82转动,第二蜗杆82带动第二蜗轮81转动,第二蜗轮81带动手轮83转动;
如图4所示,所述夹板31为平板,夹板31的一端设有螺纹孔,夹板31远离螺纹孔的一端设有套设在第一弹簧33外侧的弹簧套,所述弹簧套为一端设有开口的筒状,且弹簧套封闭的一端设有用于安装夹块32的第一通孔,所述夹块32上设有滑动杆,所述滑动杆设在第一通孔内,且第一弹簧33套设在滑动杆上,所述夹块32在夹板31远离弹簧套的一端还安装有限位销,所述限位销用于防止夹块32从夹板31上脱离和控制第一弹簧33处于压缩状态;
在一些示例中,所述驱动轮72和从动轮73均为齿轮,所述驱动电机71和驱动轮72啮合;
优选的,控制仓12内还放置有撬棍。
作为本发明的另一个实施例,所述内支架14上还安装有滚轮4,所述滚轮4通过轴承安装在内支架14上,如图3所示,所述导轨2上设有滚轮槽21,滚轮4设在滚轮槽21内,所述导轨2的两侧还设有固定翼板22,所述固定翼板22上设有安装孔;所述滚轮4用于对轿厢本体1限位。
综上所述,本发明的工作原理是:
当电梯正常运转时,夹板31处丝杠61的两端,夹块32与导轨2之间存在间隙,使得夹块32和导轨2之间不存在摩擦力,滚轮4与滚轮槽21接触,滚轮4起到对轿厢本体1限位的作用;
当电梯处于失速状态时,电梯的加速度超过预设加速度,此时,加速度传感器检测的加速度值超过阈值,微处理器控制供电模块对驱动电机71供电,驱动电机71通电转动,驱动电机71通过驱动轮72和从动轮73带动驱动杆63转动,驱动杆63通过蜗杆64和第一蜗轮62带动丝杠61转动,丝杠61转动时带动夹板31互相靠近,夹板31将夹块32夹紧在导轨2上,当夹块32夹紧在导轨2上时,夹块32和导轨2之间的摩擦力对轿厢本体1制动,使的轿厢本体1减速至零,从而将轿厢本体1固定到导轨2上;
当乘客自救时,乘客打开操作盖15并转动手轮83,手轮83带动第二蜗杆82转动,第二蜗杆82通过第二蜗轮81带动驱动杆63反向转动,驱动杆63反向转动时,夹板31互相远离,此时,由于第一弹簧33的作用,夹块32仍然夹紧在导轨2上,且夹块32对导轨2的夹紧力缓慢减小,夹块32和导轨2之间的摩擦力缓慢减小,轿厢本体1在重力作用下缓慢下滑,当轿厢本体1下滑到电梯口时,反向转动手轮83,夹板31能够互相靠近,夹块32夹紧在导轨2上,此时,轿厢本体1固定到导轨2上,乘客可使用撬棍撬开电梯门。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。

Claims (8)

  1. 一种电梯用安全轿厢装置,包括轿厢本体(1)和设置在轿厢本体(1)内部、用于在轿厢本体(1)失速时对轿厢本体(1)制动的安全单元,其特征在于,所述安全单元包括:
    夹板单元(3),所述夹板单元(3)设在固定于电梯井上且设置于轿厢本体(1)两侧的导轨(2)的两侧,所述夹板单元(3)用于对电梯制动;
    夹板驱动单元(6),所述夹板驱动单元(6)与夹板单元(3)连接,夹板驱动单元(6)用于驱动夹板单元(3)互相靠近或远离;
    主驱动单元(7),所述主驱动单元(7)与夹板驱动单元(6)连接,所述主驱动单元(7)用于识别电梯失速状态且主驱动单元(7)通过夹板驱动单元(6)控制夹板单元(3)互相靠近或远离;
    手动操控单元(8),所述手动操控单元(8)用于手动控制夹板驱动单元(6)使得夹板单元(3)对导轨(2)的夹紧力逐渐减小。
  2. 根据权利要求1所述的电梯用安全轿厢装置,其特征在于,所述轿厢本体(1)内由隔板分为乘客仓(11)和控制仓(12),隔板上设有操作盖(15)。
  3. 根据权利要求1所述的电梯用安全轿厢装置,其特征在于,所述夹板单元(3)包括夹板(31)、夹块(32)和第一弹簧(33),夹块(32)与夹板(31)滑动连接,第一弹簧(33)套设在夹块(32)上且第一弹簧(33)的两端分别与夹块(32)和夹板(31)接触,第一弹簧(33)处于压缩状态,夹板(31)在互相靠近时将夹块(32)压紧在导轨(2)上。
  4. 根据权利要求3所述的电梯用安全轿厢装置,其特征在于,所述夹板驱动单元(6)包括丝杠(61)和驱动杆(63),丝杠(61)上设有旋向相反的两组螺纹,丝杠(61)的两端安装在设置于控制仓(12)内部的外支架(13)上,丝杠(61)的中间固定连接有第一蜗轮(62),所述驱动杆(63)安装在设置于轿厢本体(1)内部的内支架(14)上,驱动杆(63)的两端设有蜗杆(64),蜗杆(64)与第一蜗轮(62)啮合。
  5. 根据权利要求4所述的电梯用安全轿厢装置,其特征在于,所述内支架(14)的两侧还设有导杆(5),所述导杆(5)与夹板(31)滑动连接。
  6. 根据权利要求4所述的电梯用安全轿厢装置,其特征在于,所述内支架(14)上还安装有滚轮(4),所述滚轮(4)通过轴承安装在内支架(14)上,所述导轨(2)上设有滚轮槽(21),滚轮(4)设在滚轮槽(21)内,所述导轨(2)的两侧还设有固定翼板(22),所述固定翼板(22)上设有安装孔。
  7. 根据权利要求4所述的电梯用安全轿厢装置,其特征在于,所述手动操控单元(8)包括第二蜗轮(81)和第二蜗杆(82),所述第二蜗轮(81)固定连接到驱动杆(63)上,所述第二蜗杆(82)通过轴承安装在控制仓(12)内,所述第二蜗杆(82)与第二蜗轮(81)啮合,第二蜗杆(82)上设有手轮(83)。
  8. 根据权利要求3-7任意一项所述的电梯用安全轿厢装置,其特征在于,所述主驱动单元(7)包括驱动电机(71)、供电模块和控制模块,所述驱动电机(71)上固定连接有驱动轮(72),所述驱动杆(63)上固定连接有从动轮(73),所述驱动轮(72)与从动轮(73)连接;所述供电模块包括蓄电池和充放电模块,所述蓄电池用于在电梯停电时对主驱动单元(7)供电,所述充放电模块用于对蓄电池智能供电和升降压,所述充放电模块与蓄电池和驱动电机(71)电性连接;所述控制模块用于检测失速状态和控制驱动电机(71)的通断电;所述控制模块包括微处理器和加速度传感器。
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