WO2019184415A1 - Elevator speed limiter - Google Patents
Elevator speed limiter Download PDFInfo
- Publication number
- WO2019184415A1 WO2019184415A1 PCT/CN2018/118129 CN2018118129W WO2019184415A1 WO 2019184415 A1 WO2019184415 A1 WO 2019184415A1 CN 2018118129 W CN2018118129 W CN 2018118129W WO 2019184415 A1 WO2019184415 A1 WO 2019184415A1
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- Prior art keywords
- elevator
- ratchet
- cam
- pawl
- fixed
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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
- B66B5/04—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
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
- B66B5/046—Mechanical overspeed governors of the pendulum or rocker arm type
Definitions
- the invention relates to the technical field of elevator safety components, in particular to an elevator speed limiter.
- Elevators are widely used in people's daily life, but because elevator maintenance is not timely or other failure reasons, it often causes some troubles in the elevator, and even leads to accidents, while elevators, speeding down, etc. are more common elevators.
- the cause of the accident there have been some detection devices to prevent accidental movement of the elevator car.
- the detection device sends a brake electric signal to the elevator brake device.
- the moving device brakes the elevator car upon receiving the above braking signal, wherein the elevator speed limiter is the main safety control component.
- Household ladders are more widely promoted and used, especially in elevator renovation of old houses. Due to space constraints, existing elevator speed limiters are difficult to be applied to household ladders because they are more suitable for organic room elevators. Therefore, it is necessary to design a new elevator speed limiter to be able to adapt to the characteristics of the machine room-less elevator and improve the work safety of the elevator.
- the object of the present invention is to provide an elevator speed limiter which can be applied to a machine room-less elevator and at the same time can improve the reliability of the elevator brake.
- the invention provides an elevator speed limiter, comprising a box body for fixing a sheave, wherein the rope body is rotatably fixed with a rope wheel, and the rope wheel is fixed in the box body by a rotating middle shaft, A ratchet is fixed on the intermediate shaft, the ratchet rotates coaxially with the sheave, and a pawl shaft is disposed above the ratchet in the casing, and a swing is fixedly fixed on the pawl shaft.
- a top of the box is provided with a contact switch, and the swinging rod is connected to a vertically disposed striking rod, and the other end of the striking rod passes out of the top of the box and is close to the contact of the contact switch.
- the swinging amplitude of the swinging rod is increased when the elevator stalls, thereby driving the touch rod to swing greatly and touching the contact of the contact switch, and the contact switch is powered off to stop the elevator after the touch rod touches the electric shock.
- an electromagnet is fixed on the top of the box, the electromagnet is disposed near the contact switch, and the electromagnet is energized when the elevator performs the safety clamp linkage test, so that the electromagnet attracts the touch rod to make the pawl card
- the ratchet at the ratchet causes the speed limiter to move, and finally the safety gear is actuated.
- the box body comprises two side panels arranged in parallel, and the upper part of the two side panels is fixedly connected by a cover plate, and the lower part of the two side panels is fixedly connected by a bottom plate, and the contact switch is fixed at the The upper part of the cover,
- a speed regulating spring is disposed in the box body, and one end of the speed regulating spring is fixed at the box body, and the other end is fixedly connected to the swinging rod for limiting the swinging rod.
- the present invention has the following advantages over the prior art:
- the elevator speed limiter of the present invention is provided with a ratchet rotating coaxially with the sheave, wherein the ratchet has a cam associated with the rotating wheel at the swinging rod, and the cam can drive the rotating wheel to rotate, thereby causing the swinging rod to swing left and right, normal
- the pawl on the swinging rod does not touch the ratchet at the ratchet.
- the rotation speed of the cam is increased, and the rotation of the rotating wheel is driven to increase the swinging amplitude of the swinging rod, and then the pawl tooth card is increased.
- the ratchet in the ratchet causes the speed limiter to stop rotating, and the speed limiter wire rope pulls the safety clamp to stop the elevator, so that the speed limit stop of the home machine roomless elevator can be realized, and the elevator speed limiter has a simple and convenient structure. And work safely and with high reliability.
- the present invention further provides a striking rod connected to the swinging rod.
- the striking rod does not contact the switch under normal conditions.
- the swinging rod swing increases and drives The additional swing of the striking rod enables the striking rod to touch the switch to make the switch act, and stop the work of the elevator, thereby further improving the working safety of the elevator.
- FIG. 1 is a front view showing the structure of an elevator speed limiter according to an embodiment of the present invention
- FIG. 2 is a schematic left side view of the elevator speed limiter shown in Figure 1;
- FIG. 3 is a schematic right side view of the elevator speed limiter shown in FIG. 1.
- the invention describes an elevator speed limiter, comprising a box 1 for fixing a sheave 2, as shown in Fig. 2 and Fig. 3, the box body 1 comprises two side plates 11 arranged in parallel, on two side plates The upper portion of the upper portion 11 is fixedly connected by the cover plate 12, and the lower portion of the two side plates 11 is fixedly connected by the bottom plate 13, and the sheave 2 is rotatably fixed in the casing 1, and the rotating central shaft 21 is fixed at the bottom.
- the sheave 2 is fixed in the casing 1 by a rotating middle shaft 21, and a ratchet 3 is fixed on the intermediate shaft, the ratchet 3 Rotating coaxially with the sheave 2, a pawl shaft 4 is fixed between the two side plates 11 in the casing 1, and the pawl shaft 4 is located above the ratchet 3
- a swing lever 5 is rotatably fixed to the pawl shaft 4, and a swing wheel 51 is fixed to one end of the swing lever 5, and a pawl 52 is disposed at a middle portion of the swing lever 5, wherein the ratchet 3 includes a cam 31. And a plurality of ratchet teeth 32 disposed on the back of the cam 31, the runner 51 being in contact with the surface of the cam 31.
- the runner 51 follows the rotation of the cam 31, and drives the swing lever 5 connected to the runner 51 to swing left and right, and the pawl 52 does not cooperate with the normal swing.
- the ratchet 3 ratchet 32 is touched, and when the elevator stalls, the rotation of the sheave 2 is instantaneously accelerated, and the cam 31 of the ratchet 3 rotating coaxially with the sheave 2 is accelerated, and the rotary wheel 51 is at the cam
- the action swing amplitude is increased, which in turn drives the pawl 52 to increase in swing amplitude and contacts the ratchet teeth 32 on the back side of the cam 31, and the pawl 52 is engaged with the ratchet teeth 32.
- the elevator speed limiter of the present embodiment is provided with a ratchet wheel 3 that rotates coaxially with the sheave 2, and the ratchet wheel 3 has a cam 31 that is interlocked with the turning wheel 51 at the swinging lever 5, and the cam 31 can drive
- the runner 51 rotates, so that the swing lever 5 swings left and right.
- the pawl 52 on the swing lever 5 does not touch the ratchet 32 at the ratchet wheel 3.
- the rotation speed of the cam 31 is increased, and the lift is released.
- the rotation of the runner 51 causes the swinging amplitude of the swinging lever 5 to increase, and then the teeth of the pawl 52 are caught in the ratchet teeth 32 of the ratchet wheel 3 so that the speed limiter stops rotating, and the speed limiter wire rope pulls the safety gear to stop the elevator.
- the speed limit stop of the home machine roomless elevator can be realized, and the elevator speed limiter has a simple and convenient structure, and is safe in work and high in reliability.
- the top of the cover plate 12 of the casing 1 is provided with a contact switch 7, and the swinging lever 5 is connected to a vertically disposed striking rod 6, and the other end of the striking rod 6 is worn. Opening the top of the box 1 and approaching the contact of the contact switch 7, the swinging amplitude of the swinging rod 5 is increased when the elevator stalls, thereby driving the striking rod 6 to swing greatly and touching the contact of the contact switch 7. After the touch rod 6 touches the electric shock, the contact switch 7 is powered off to stop the elevator.
- the structural design of the striking rod 6 combined with the contact switch 7 realizes the auxiliary stopping of the elevator.
- the touch rod 6 will not touch the switch 7, and when the elevator overspeeds, the swing rod 5 swings to increase, and the swing rod 6 is swung to increase the swing, so that the touch rod 6 can touch the switch to make the switch act, and stop the elevator. Work to further improve the safety of the elevator work.
- An electromagnet 8 for performing linkage test is further fixed on the top of the cover plate 12, and the electromagnet 8 is disposed adjacent to the contact switch 7.
- the electromagnet 8 is energized to trigger the electromagnet. 8
- the suction bar 6 causes the pawl 52 to snap into the ratchet 32 at the ratchet wheel 3 to actuate the speed limiter, and finally the safety gear is actuated.
- the electromagnet 8 is tested to facilitate the safety clamp linkage test after the elevator is installed, and the test can be completed more quickly and conveniently, and the safety verification can be realized, and the detection cost can be saved.
- a speed regulating spring 53 is disposed in the casing 1, and one end of the speed regulating spring 53 is fixed at the casing 1 and the other end is fixedly connected.
- the swinging lever 5 is used for limiting the swinging lever 5 so that the swinging lever 5 is not forced to be ejected or lost, thereby ensuring the normal operation of the swinging lever 5.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Disclosed is an elevator speed limiter. A rope wheel (2) is rotatably fixed inside a box body (1), the rope wheel (2) is fixed inside the box body (1) by a rotation centre shaft (21), a ratchet wheel (3) is fixed on the rotation centre shaft (21), the ratchet wheel (3) rotates coaxially with the rope wheel (2), a pawl shaft (4) is provided inside the box body (1) above the ratchet wheel (3), an oscillating rod (5) is rotatably fixed on the pawl shaft (4), a rotation wheel (51) is provided on an end of the oscillating rod (5), a pawl (52) is provided in the middle of the oscillating rod (5), the ratchet wheel (3) comprises a cam (31) and multiple ratchets (32) provided on a back face of the cam (31), and the surface of the rotation wheel (51) is in contact with the surface of the cam (31). When the elevator stalls, the oscillation amplitude of the rotation wheel (51) increases under the action of the cam (31), then the pawl (52) is driven to increase the oscillation amplitude and come into contact with the ratchets (32) on the back face of the cam (31), and the pawl (52) is clamped with the ratchets (32). The elevator speed limiter can be applied to an elevator without a machine room and can improve the reliability of elevator braking.
Description
本发明涉及电梯安全部件技术领域,特别是涉及一种电梯限速器。The invention relates to the technical field of elevator safety components, in particular to an elevator speed limiter.
电梯被广泛地应用于人们的日常生活中,但是由于电梯维护不及时或其他故障原因,常会导致电梯发生一些故障,甚至导致事故的发生,而电梯溜车、超速下行等则是较为普遍的电梯事故成因,目前已经出现一些防止电梯轿厢意外移动的检测装置,在电梯轿厢在井道内停站时,如果出现停站溜车,检测装置向电梯制动装置发出制动电信号,电梯制动装置在接收到上述制动信号则对电梯轿厢进行制动,其中,电梯限速器就是主要的安全控制部件。Elevators are widely used in people's daily life, but because elevator maintenance is not timely or other failure reasons, it often causes some troubles in the elevator, and even leads to accidents, while elevators, speeding down, etc. are more common elevators. The cause of the accident, there have been some detection devices to prevent accidental movement of the elevator car. When the elevator car stops in the hoistway, if there is a stop and stop, the detection device sends a brake electric signal to the elevator brake device. The moving device brakes the elevator car upon receiving the above braking signal, wherein the elevator speed limiter is the main safety control component.
家用梯被更广泛地予以推广和使用,尤其是老旧房的电梯改造中,由于空间上的限制,现有的电梯限速器由于更为适用有机房电梯,因此很难被应用到家用梯中,因此需要设计出一种新的电梯限速器,以能够适应无机房电梯的特性,同时提高电梯的工作安全性。Household ladders are more widely promoted and used, especially in elevator renovation of old houses. Due to space constraints, existing elevator speed limiters are difficult to be applied to household ladders because they are more suitable for organic room elevators. Therefore, it is necessary to design a new elevator speed limiter to be able to adapt to the characteristics of the machine room-less elevator and improve the work safety of the elevator.
发明内容Summary of the invention
本发明目的是要提供一种电梯限速器,能够适用无机房电梯,同时能够提高电梯制动可靠性。The object of the present invention is to provide an elevator speed limiter which can be applied to a machine room-less elevator and at the same time can improve the reliability of the elevator brake.
为达到上述目的,本发明采用的技术方案是:In order to achieve the above object, the technical solution adopted by the present invention is:
本发明提供了一种电梯限速器,包括固定绳轮的箱体,所述箱体内可转动地固定有绳轮,所述绳轮通过转动中轴固定在所述箱体中,在所述中转中轴上固定有棘轮,所述棘轮与所述绳轮同轴转动,在所述箱体内位于所述棘轮的上方设置有棘爪轴,在所述棘爪轴上可转动地固定有摆动杆,所述摆动杆的一端固定有转轮,所述摆动杆的中部设置有棘爪,其中,所述棘轮包括凸轮和设置 在凸轮背面的多个棘齿,所述转轮与所述凸轮表面相接触;The invention provides an elevator speed limiter, comprising a box body for fixing a sheave, wherein the rope body is rotatably fixed with a rope wheel, and the rope wheel is fixed in the box body by a rotating middle shaft, A ratchet is fixed on the intermediate shaft, the ratchet rotates coaxially with the sheave, and a pawl shaft is disposed above the ratchet in the casing, and a swing is fixedly fixed on the pawl shaft. a rod having a rotating wheel fixed at one end thereof, a middle portion of the swinging rod is provided with a pawl, wherein the ratchet includes a cam and a plurality of ratchet teeth disposed on a back surface of the cam, the rotating wheel and the cam Surface contact;
电梯失速时所述转轮在所述凸轮作用摆动幅度提高,进而带动所述棘爪摆动幅度提高并接触到所述凸轮背面的棘齿,所述棘爪与所述棘齿卡接。When the elevator stalls, the swinging amplitude of the rotating wheel in the cam is increased, thereby driving the pawl to increase the swinging amplitude and contacting the ratchet teeth on the back surface of the cam, and the pawl is engaged with the ratchet.
对于上述技术方案,发明人还有进一步的优化措施。For the above technical solutions, the inventors have further optimization measures.
进一步地,所述箱体的顶部设置有接触开关,所述摆动杆与一竖直设置的碰杆相连,所述碰杆的另一端穿出所述箱体顶部并接近所述接触开关的触点设置,电梯失速时摆动杆摆动幅度增大进而带动所述碰杆大幅摆动并碰触所述接触开关的触点,在碰杆碰触所述触电后所述接触开关断电制停电梯。Further, a top of the box is provided with a contact switch, and the swinging rod is connected to a vertically disposed striking rod, and the other end of the striking rod passes out of the top of the box and is close to the contact of the contact switch. According to the point setting, the swinging amplitude of the swinging rod is increased when the elevator stalls, thereby driving the touch rod to swing greatly and touching the contact of the contact switch, and the contact switch is powered off to stop the elevator after the touch rod touches the electric shock.
更进一步地,在所述箱体顶部固定有电磁铁,所述电磁铁靠近所述接触开关设置,电梯做安全钳联动测试时给电磁铁通电触发使得所述电磁铁吸附碰杆使棘爪卡入棘轮处的棘齿使限速器动作,最后再使安全钳动作。Further, an electromagnet is fixed on the top of the box, the electromagnet is disposed near the contact switch, and the electromagnet is energized when the elevator performs the safety clamp linkage test, so that the electromagnet attracts the touch rod to make the pawl card The ratchet at the ratchet causes the speed limiter to move, and finally the safety gear is actuated.
进一步地,所述箱体包括平行设置的两块侧板,在两块侧板的上部通过盖板固定连接,在所述两块侧板的下部通过底板固定连接,所述接触开关固定在所述盖板上部,Further, the box body comprises two side panels arranged in parallel, and the upper part of the two side panels is fixedly connected by a cover plate, and the lower part of the two side panels is fixedly connected by a bottom plate, and the contact switch is fixed at the The upper part of the cover,
更进一步地,所述箱体内设置有调速弹簧,所述调速弹簧的一端固定在箱体处,另一端固定连接所述摆动杆,用于对所述摆动杆的限位。Further, a speed regulating spring is disposed in the box body, and one end of the speed regulating spring is fixed at the box body, and the other end is fixedly connected to the swinging rod for limiting the swinging rod.
由于上述技术方案运用,本发明与现有技术相比具有下列优点:Due to the above technical solutions, the present invention has the following advantages over the prior art:
本发明的电梯限速器,其通过设置与绳轮同轴转动的棘轮,棘轮中具有与摆动杆处转轮联动的凸轮,所述凸轮能够带动转轮转动,进而使得摆动杆左右摆动,正常转动时摆动杆上的棘爪不会碰触棘轮处的棘齿,当电梯超速时,凸轮转速提高,带动与其解除的转轮转动进而使得摆动杆的摆动幅度增大,然后棘爪齿部卡入棘轮中的棘齿内使得限速器停止转动,限速器钢丝绳提拉安全钳使电梯制停,如此能够实现家用无机房电梯的限速制停,该电梯限速器结构简单便于布置,且工作安全,可靠性高。The elevator speed limiter of the present invention is provided with a ratchet rotating coaxially with the sheave, wherein the ratchet has a cam associated with the rotating wheel at the swinging rod, and the cam can drive the rotating wheel to rotate, thereby causing the swinging rod to swing left and right, normal When the rotation, the pawl on the swinging rod does not touch the ratchet at the ratchet. When the elevator overspeeds, the rotation speed of the cam is increased, and the rotation of the rotating wheel is driven to increase the swinging amplitude of the swinging rod, and then the pawl tooth card is increased. The ratchet in the ratchet causes the speed limiter to stop rotating, and the speed limiter wire rope pulls the safety clamp to stop the elevator, so that the speed limit stop of the home machine roomless elevator can be realized, and the elevator speed limiter has a simple and convenient structure. And work safely and with high reliability.
进一步地,本发明还设置了与摆动杆相连的碰杆,通过碰杆与接触开关的结构设计,正常情况下碰杆也不会接触开关,当电梯超速时,摆动杆摆幅增大,带动碰杆摆幅增发,使得碰杆能够触碰开关使开关动作,制停电梯的工作,进一步提高电梯的工作安全性。Further, the present invention further provides a striking rod connected to the swinging rod. Through the structural design of the striking rod and the contact switch, the striking rod does not contact the switch under normal conditions. When the elevator overspeeds, the swinging rod swing increases and drives The additional swing of the striking rod enables the striking rod to touch the switch to make the switch act, and stop the work of the elevator, thereby further improving the working safety of the elevator.
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解,这些附图未必是按比例绘制的。附图中:Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:
图1是根据本发明一个实施例的电梯限速器的主视结构示意图;1 is a front view showing the structure of an elevator speed limiter according to an embodiment of the present invention;
图2是图1所示电梯限速器的左视结构示意图;Figure 2 is a schematic left side view of the elevator speed limiter shown in Figure 1;
图3是图1所示电梯限速器的右视结构示意图。3 is a schematic right side view of the elevator speed limiter shown in FIG. 1.
其中,附图标记说明如下:Among them, the reference numerals are as follows:
1、箱体,11、侧板,12、盖板,13、底板;1, box, 11, side panels, 12, cover, 13, bottom plate;
2、绳轮,21、转动中轴;2, the sheave, 21, the rotating shaft;
3、棘轮,31、凸轮,32、棘齿;3, ratchet, 31, cam, 32, ratchet;
4、棘爪轴;4, the pawl shaft;
5、摆动杆,51、转轮,52、棘爪,53、调速弹簧;5, swinging rod, 51, runner, 52, pawl, 53, speed governing spring;
6、碰杆;7、接触开关;8、电磁铁。6, touch rod; 7, contact switch; 8, electromagnet.
下面将结合附图对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例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。The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
此外,下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。Further, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
本发明描述了一种电梯限速器,包括固定绳轮2的箱体1,如图2、图3所示,所述箱体1包括平行设置的两块侧板11,在两块侧板11的上部通过盖板12固定连接,在所述两块侧板11的下部通过底板13固定连接,而在所述箱体1内可转动地固定有绳轮2,转动中轴21固定在所述两侧板11之间且基本位于侧板11中部,所述绳轮2通过转动中轴21固定在所述箱体1中,在所述中转中轴上固定有棘轮3,所述棘轮3与所述绳轮2同轴转动,在所述箱体1内位于所述两块侧板11之间固定有棘爪轴4,所述棘爪轴4位于所述棘轮3的上方,在所述棘爪轴4上可转动地固定有摆动杆5,所述摆动杆5的一端固定有转轮51,所述摆动杆5的中部设置有棘爪52,其中,所述棘轮3包括凸轮31和设置在凸轮31背面的多个棘齿32,所述转轮51与所述凸轮31表面相接触。The invention describes an elevator speed limiter, comprising a box 1 for fixing a sheave 2, as shown in Fig. 2 and Fig. 3, the box body 1 comprises two side plates 11 arranged in parallel, on two side plates The upper portion of the upper portion 11 is fixedly connected by the cover plate 12, and the lower portion of the two side plates 11 is fixedly connected by the bottom plate 13, and the sheave 2 is rotatably fixed in the casing 1, and the rotating central shaft 21 is fixed at the bottom. Between the two side plates 11 and substantially in the middle of the side plate 11, the sheave 2 is fixed in the casing 1 by a rotating middle shaft 21, and a ratchet 3 is fixed on the intermediate shaft, the ratchet 3 Rotating coaxially with the sheave 2, a pawl shaft 4 is fixed between the two side plates 11 in the casing 1, and the pawl shaft 4 is located above the ratchet 3 A swing lever 5 is rotatably fixed to the pawl shaft 4, and a swing wheel 51 is fixed to one end of the swing lever 5, and a pawl 52 is disposed at a middle portion of the swing lever 5, wherein the ratchet 3 includes a cam 31. And a plurality of ratchet teeth 32 disposed on the back of the cam 31, the runner 51 being in contact with the surface of the cam 31.
可以理解的是,电梯正常运行的情况下,转轮51跟随所述凸轮31转动,带动与转轮51相连的摆动杆5左右摆动,且在正常摆幅下所述棘爪52是不会与棘轮3棘齿32碰触到的,而在电梯失速时,绳轮2转动瞬间加快,与绳轮2同轴转动的棘轮3的凸轮31随之转动加快,所述转轮51在所述凸轮31作用摆动幅度提高,进而带动所述棘爪52摆动幅度提高并接触到所述凸轮31背面的 棘齿32,所述棘爪52与所述棘齿32卡接。It can be understood that, in the case of normal operation of the elevator, the runner 51 follows the rotation of the cam 31, and drives the swing lever 5 connected to the runner 51 to swing left and right, and the pawl 52 does not cooperate with the normal swing. The ratchet 3 ratchet 32 is touched, and when the elevator stalls, the rotation of the sheave 2 is instantaneously accelerated, and the cam 31 of the ratchet 3 rotating coaxially with the sheave 2 is accelerated, and the rotary wheel 51 is at the cam The action swing amplitude is increased, which in turn drives the pawl 52 to increase in swing amplitude and contacts the ratchet teeth 32 on the back side of the cam 31, and the pawl 52 is engaged with the ratchet teeth 32.
也就是说,本实施例的电梯限速器,其通过设置与绳轮2同轴转动的棘轮3,棘轮3中具有与摆动杆5处转轮51联动的凸轮31,所述凸轮31能够带动转轮51转动,进而使得摆动杆5左右摆动,正常转动时摆动杆5上的棘爪52不会碰触棘轮3处的棘齿32,当电梯超速时,凸轮31转速提高,带动与其解除的转轮51转动进而使得摆动杆5的摆动幅度增大,然后棘爪52齿部卡入棘轮3中的棘齿32内使得限速器停止转动,限速器钢丝绳提拉安全钳使电梯制停,如此能够实现家用无机房电梯的限速制停,该电梯限速器结构简单便于布置,且工作安全,可靠性高。That is, the elevator speed limiter of the present embodiment is provided with a ratchet wheel 3 that rotates coaxially with the sheave 2, and the ratchet wheel 3 has a cam 31 that is interlocked with the turning wheel 51 at the swinging lever 5, and the cam 31 can drive The runner 51 rotates, so that the swing lever 5 swings left and right. When normally rotating, the pawl 52 on the swing lever 5 does not touch the ratchet 32 at the ratchet wheel 3. When the elevator overspeeds, the rotation speed of the cam 31 is increased, and the lift is released. The rotation of the runner 51 causes the swinging amplitude of the swinging lever 5 to increase, and then the teeth of the pawl 52 are caught in the ratchet teeth 32 of the ratchet wheel 3 so that the speed limiter stops rotating, and the speed limiter wire rope pulls the safety gear to stop the elevator. In this way, the speed limit stop of the home machine roomless elevator can be realized, and the elevator speed limiter has a simple and convenient structure, and is safe in work and high in reliability.
进一步地,如图1所示,所述箱体1盖板12的顶部设置有接触开关7,所述摆动杆5与一竖直设置的碰杆6相连,所述碰杆6的另一端穿出所述箱体1顶部并接近所述接触开关7的触点设置,电梯失速时摆动杆5摆动幅度增大进而带动所述碰杆6大幅摆动并碰触所述接触开关7的触点,在碰杆6碰触所述触电后所述接触开关7断电制停电梯。Further, as shown in FIG. 1, the top of the cover plate 12 of the casing 1 is provided with a contact switch 7, and the swinging lever 5 is connected to a vertically disposed striking rod 6, and the other end of the striking rod 6 is worn. Opening the top of the box 1 and approaching the contact of the contact switch 7, the swinging amplitude of the swinging rod 5 is increased when the elevator stalls, thereby driving the striking rod 6 to swing greatly and touching the contact of the contact switch 7. After the touch rod 6 touches the electric shock, the contact switch 7 is powered off to stop the elevator.
本实施例通过设置与摆动杆5相连的碰杆6,碰杆6与接触开关7相结合的结构设计实现了对电梯的辅助制停。正常情况下碰杆6也不会接触开关7,而当电梯超速时,摆动杆5摆幅增大,带动碰杆6摆幅增发,使得碰杆6能够触碰开关使开关动作,制停电梯的工作,进一步提高电梯的工作安全性。In this embodiment, by setting the striking rod 6 connected to the swinging rod 5, the structural design of the striking rod 6 combined with the contact switch 7 realizes the auxiliary stopping of the elevator. Under normal circumstances, the touch rod 6 will not touch the switch 7, and when the elevator overspeeds, the swing rod 5 swings to increase, and the swing rod 6 is swung to increase the swing, so that the touch rod 6 can touch the switch to make the switch act, and stop the elevator. Work to further improve the safety of the elevator work.
在所述盖板12顶部还固定有进行联动测试用的电磁铁8,所述电磁铁8靠近所述接触开关7设置,电梯做安全钳联动测试时给电磁铁8通电触发使得所述电磁铁8吸附碰杆6使棘爪52卡入棘轮3处的棘齿32使限速器动作,最后再使安全钳动作。电磁铁8的测试是为了便于电梯安装后的安全钳联动测试,能够更快更便捷地完成测试,实现对于安全性的验证,且能够节约检测成本。An electromagnet 8 for performing linkage test is further fixed on the top of the cover plate 12, and the electromagnet 8 is disposed adjacent to the contact switch 7. When the elevator performs a safety clamp linkage test, the electromagnet 8 is energized to trigger the electromagnet. 8 The suction bar 6 causes the pawl 52 to snap into the ratchet 32 at the ratchet wheel 3 to actuate the speed limiter, and finally the safety gear is actuated. The electromagnet 8 is tested to facilitate the safety clamp linkage test after the elevator is installed, and the test can be completed more quickly and conveniently, and the safety verification can be realized, and the detection cost can be saved.
另外,为了约束摆动杆5在摆动情况下的复位及限位,所述箱体1内设置 有调速弹簧53,所述调速弹簧53的一端固定在箱体1处,另一端固定连接所述摆动杆5,用于对所述摆动杆5进行限位,使得摆动杆5不至于受力即弹出或者失位,保证摆动杆5的正常动作。In addition, in order to restrain the resetting and limiting of the swinging lever 5 in the swinging state, a speed regulating spring 53 is disposed in the casing 1, and one end of the speed regulating spring 53 is fixed at the casing 1 and the other end is fixedly connected. The swinging lever 5 is used for limiting the swinging lever 5 so that the swinging lever 5 is not forced to be ejected or lost, thereby ensuring the normal operation of the swinging lever 5.
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围,凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。The above embodiments are only intended to illustrate the technical idea and the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention. Equivalent changes or modifications made to the spirit of the spirit should be covered by the scope of the present invention.
Claims (5)
- 一种电梯限速器,包括固定绳轮的箱体,所述箱体内可转动地固定有绳轮,所述绳轮通过转动中轴固定在所述箱体中,其特征在于,在所述中转中轴上固定有棘轮,所述棘轮与所述绳轮同轴转动,在所述箱体内位于所述棘轮的上方设置有棘爪轴,在所述棘爪轴上可转动地固定有摆动杆,所述摆动杆的一端固定有转轮,所述摆动杆的中部设置有棘爪,其中,所述棘轮包括凸轮和设置在凸轮背面的多个棘齿,所述转轮与所述凸轮表面相接触;An elevator speed limiter includes a case for fixing a sheave, wherein the case is rotatably fixed with a sheave, and the sheave is fixed in the case by a rotating middle shaft, wherein A ratchet is fixed on the intermediate shaft, the ratchet rotates coaxially with the sheave, and a pawl shaft is disposed above the ratchet in the casing, and a swing is fixedly fixed on the pawl shaft. a rod having a rotating wheel fixed at one end thereof, a middle portion of the swinging rod is provided with a pawl, wherein the ratchet includes a cam and a plurality of ratchet teeth disposed on a back surface of the cam, the rotating wheel and the cam Surface contact;电梯失速时所述转轮在所述凸轮作用摆动幅度提高,进而带动所述棘爪摆动幅度提高并接触到所述凸轮背面的棘齿,所述棘爪与所述棘齿卡接。When the elevator stalls, the swinging amplitude of the rotating wheel in the cam is increased, thereby driving the pawl to increase the swinging amplitude and contacting the ratchet teeth on the back surface of the cam, and the pawl is engaged with the ratchet.
- 根据权利要求1所述的电梯限速器,其特征在于,所述箱体的顶部设置有接触开关,所述摆动杆与一竖直设置的碰杆相连,所述碰杆的另一端穿出所述箱体顶部并接近所述接触开关的触点设置,电梯失速时摆动杆摆动幅度增大进而带动所述碰杆大幅摆动并碰触所述接触开关的触点,在碰杆碰触所述触电后所述接触开关断电制停电梯。The elevator speed limiter according to claim 1, wherein a top of the box is provided with a contact switch, the swinging rod is connected to a vertically disposed striking rod, and the other end of the striking rod is worn out. The top of the box is disposed close to the contact of the contact switch, and the swinging amplitude of the swinging rod is increased when the elevator stalls, thereby driving the hitting rod to swing greatly and touching the contact of the contact switch, at the touch rod touch point After the electric shock, the contact switch is powered off to stop the elevator.
- 根据权利要求2所述的电梯限速器,其特征在于,在所述箱体顶部固定有电磁铁,所述电磁铁靠近所述接触开关设置,电梯做安全钳联动测试时给电磁铁通电触发使得所述电磁铁吸附碰杆使棘爪卡入棘轮处的棘齿使限速器动作,最后再使安全钳动作。The elevator speed limiter according to claim 2, wherein an electromagnet is fixed on the top of the box, the electromagnet is arranged close to the contact switch, and the electromagnet is energized when the elevator performs the safety clamp linkage test. The ratchet is moved by the electromagnet to attract the ratchet to the ratchet, and the speed limiter is actuated, and finally the safety gear is operated.
- 根据权利要求2所述的电梯限速器,其特征在于,所述箱体包括平行设置的两块侧板,在两块侧板的上部通过盖板固定连接,在所述两块侧板的下部通过底板固定连接,所述接触开关固定在所述盖板上部。The elevator speed limiter according to claim 2, wherein the box body comprises two side plates arranged in parallel, and the upper part of the two side plates is fixedly connected by a cover plate, and the two side plates are fixedly connected The lower portion is fixedly connected by a bottom plate, and the contact switch is fixed to an upper portion of the cover plate.
- 根据权利要求1至4中任一项所述的电梯限速器,其特征在于,所述箱体内设置有调速弹簧,所述调速弹簧的一端固定在箱体处,另一端固定连接所述摆动杆,用于对所述摆动杆的限位。The elevator speed limiter according to any one of claims 1 to 4, wherein a speed regulating spring is disposed in the box body, and one end of the speed regulating spring is fixed at the box body, and the other end is fixedly connected The swinging lever is used for limiting the swinging lever.
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CN108275534A (en) * | 2018-03-28 | 2018-07-13 | 苏州尼隆电梯部件有限公司 | A kind of elevator governor |
CN110217667B (en) * | 2019-06-13 | 2023-12-05 | 苏州尼隆机电科技有限公司 | Direct-push reset elevator speed limiter |
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