WO2008006296A1 - Ensemble coupe-circuit avec dispositif d'enclenchement - Google Patents

Ensemble coupe-circuit avec dispositif d'enclenchement Download PDF

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Publication number
WO2008006296A1
WO2008006296A1 PCT/CN2007/002062 CN2007002062W WO2008006296A1 WO 2008006296 A1 WO2008006296 A1 WO 2008006296A1 CN 2007002062 W CN2007002062 W CN 2007002062W WO 2008006296 A1 WO2008006296 A1 WO 2008006296A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit breaker
cable
control
control arm
base plate
Prior art date
Application number
PCT/CN2007/002062
Other languages
English (en)
French (fr)
Inventor
Aijun Zhang
Original Assignee
Zhejiang Chint Electrics Co., Ltd
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 Zhejiang Chint Electrics Co., Ltd filed Critical Zhejiang Chint Electrics Co., Ltd
Priority to EP07721622.4A priority Critical patent/EP2040277B1/en
Priority to US12/307,521 priority patent/US8237070B2/en
Priority to PL07721622T priority patent/PL2040277T3/pl
Publication of WO2008006296A1 publication Critical patent/WO2008006296A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20Interlocking, locking, or latching mechanisms
    • H01H9/26Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • H01H9/262Interlocking, locking, or latching mechanisms for interlocking two or more switches using flexible transmission elements, e.g. Bowden cable
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20Interlocking, locking, or latching mechanisms
    • H01H9/26Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • H01H2009/267Interlocking, locking, or latching mechanisms for interlocking two or more switches with interlocking of two out of three switches, e.g. two switches each connecting a power supply to a busbar and a bus coupling switch interlocked in such a way that the power supplies are never connected in parallel

Definitions

  • the present invention relates to a circuit breaker set having interlocking devices, and more particularly to a mechanical interlocked circuit breaker set that can be used between at least three circuit breakers. Background technique
  • each circuit is equipped with a circuit breaker, and a circuit breaker that is normally disconnected as a tie switch or a circuit switch is provided between the circuit and the circuit, if one of the circuits is powered After a failed trip, the circuit breaker used as a tie or loop switch is closed to ensure proper operation and normal powering of the multi-circuit power system in which the circuit breaker is installed and the load connected to the circuit breaker.
  • the circuit breaker In practical applications, in order to ensure safety, the circuit breaker is required to perform some auxiliary functions other than its normal operation function.
  • the circuit breaker group including the tie breaker or the circuit breaker circuit breaker needs to be electrically interlocked, in addition to the electrical interlock.
  • a mechanical interlocking function between two or more circuit breakers is required.
  • Patent No. 97,925,954, 2 discloses a switch group having interlocking devices.
  • the mechanical interlocking device of the prior art discloses the following technical features: Each switch has a resiliently supported rocking member, each swinging The device is operatively coupled to a device capable of locking the respective switch, each switch having a drive assembly coupled to both ends of the two cables Set. Since the known rocking member of the mechanical interlocking device composed of the rocking member and the cable is elastically supported, it is difficult to install and debug, and the repeating positioning accuracy and the vibration resistance are poor, and the swing is directly connected to the trigger. The problem of repeated positioning accuracy and anti-vibration performance seriously affects the reliability and stability of the switch.
  • the object of the present invention is to overcome the above-mentioned prior art deficiencies and to provide a circuit breaker group having an improved mechanical interlocking device, which can meet the requirements of automatic control and realize linkage/release between multiple circuit breakers. Any combination to meet the different requirements of the product chain for the actual required operational functions.
  • Another important object of the present invention is to overcome the structural principle defects of the prior art circuit breaker mechanical interlock mechanism device, and provide a safety, stability, reliability, convenient operation and debugging, low production cost, and long service life. Long circuit breaker group with interlocking devices.
  • the present invention adopts the following technical solutions.
  • the circuit breaker group with interlocking device of the present invention comprises at least three circuit breakers and at least six cables, each of the circuit breaker groups having an interlocking device, and The cables are connected to each other and transmit driving force, and each interlocking device comprises a driving component, a control component, a locking component, a base plate and a cable mechanism; the interlocking device has at least one control lever and at least one driving lever disposed on the base plate At least two control arms and three elastic elements; the drive rod is operatively coupled to a drive mechanism on the circuit breaker; the control rod is coupled to a trigger of the circuit breaker locking device; The two cables of the cables connected to the drive rods of any one of the circuit breakers are respectively connected to one of the other two circuit breakers; the control arm is in the cable tension and the elasticity Under the joint action of the component spring force, the movement limit or release restriction of the control rod is completed; after the movement limit of the control arm is released, the control rod automatically completes the circuit breaker under the elastic force of the elastic member. Lock
  • the driving component of the present invention has a driving rod, and both ends of the driving rod have a connecting mechanism for receiving the cable, and the driving rod is connected with the two cables through the connecting mechanism;
  • the middle of the driving rod has a driving rod and a driving rod a vertical shaft, one end of which is fixedly connected to the driving rod, the middle of the shaft is movably connected with the access hole on the base plate, and the other end of the shaft is connected with the driving circuit breaker opening/closing driving device behind the base plate
  • the control component includes two control arms, one end of each control arm has a hole, and the hole is movably connected with a shaft fixed on the base plate, so that the control arm can rotate around the axis; each control arm The other end is fixedly connected with the cable of the cable, which transmits the driving force of the driving rod to the control arms of the other two circuit breakers; each of the control arms is provided with a tension spring, and the other end of the tension spring is connected with the base plate The pulling force of the tension spring is opposite to
  • a tension spring is arranged on the control rod, and the other end of the tension spring is fixedly connected with the base plate; and the pulling force of the tension spring on the control rod and the tensile force of the steel cable on the control arm can make the
  • the boss on the control rod is kept in contact with or not in contact with the side of the control arm;
  • the cable is composed of a steel cable and a cable sleeve, and the steel cable is in the middle of the cable sleeve, and when the two ends of the cable sleeve are fixed, the steel cable is pulled
  • the steel cable and the cable sleeve are axially displaced to realize the function of transmitting axial movement over a long distance;
  • the cable mechanism has one end of the steel cable fixed to one end of a drive rod of a circuit breaker of the circuit breaker group, steel The other end of the cable is fixed to one end of the control arm of the other circuit breaker of the circuit breaker group, and the two ends of the cable sleeve are
  • the driving device of one of the circuit breaker sets when the driving device of one of the circuit breaker sets is operated, the driving device drives the driving rod on the circuit breaker to rotate, The rotation of the driving rod drives the two steel cables connected at the two ends of the driving rod to be tightened, and the two sides of the control arm of the other two circuit breakers of the circuit breaker group are driven away from the boss of the control rod by the two steel cables that are tensioned.
  • the limitation of the target circuit breaker control rod is released, so that the control rod of the target circuit breaker realizes the interlocking of the required circuit breaker group under the tension of the tension spring; conversely, when the steel cable is relaxed, due to the pulling on the control arm The spring action resets the control arm and contacts the boss on the control rod to unlock the required circuit breaker group.
  • any combination of the plurality of circuit breaker states can be realized, for example, three. After any two circuit breakers in the circuit breaker are closed, the third circuit breaker cannot be closed.
  • Figure 1 is a side elevational view of an embodiment of three interconnected circuit breakers with interlocking devices of the present invention
  • Figure 2 is a schematic structural view of the second circuit breaker shown in Figure 1;
  • Figure 3 is a schematic view showing the structure of the control arms 27, 28 and the motion-limited control lever 8 mounted on the second circuit breaker without being affected by the transmission of other circuit breaker driving devices;
  • FIG 4 is a perspective view of the lever 8 shown in Figure 3;
  • Figures 5 and 6 are schematic views of the drive rod 80 of the first circuit breaker in two positions; Figures 7 to 9 are the control arms 27, 28 and control of the second circuit breaker driven by other different circuit breaker driving devices. A schematic representation of the final position of the rod 8.
  • One of the following embodiments is a circuit breaker set of three circuit breakers of the present invention to illustrate the operation and advantages of the interlocking apparatus of the present invention.
  • the circuit breaker group to which the present invention relates is not limited to a circuit breaker group composed of three circuit breakers.
  • the circuit breaker group of the present invention is composed of circuit breakers 1, 2, 3.
  • each circuit breaker has an interlocking device 4.
  • Each interlock has a base plate 5, a drive rod 80 and three tension springs 10, 1 1 and 12.
  • the cable at the end of the cable 13 is fixedly connected to the left end of the drive rod 80 of the second circuit breaker 2, and the other end is fixedly connected to the left control arm 25 of the first circuit breaker 1.
  • the cable at one end of the cable 14 is fixedly coupled to the right end of the drive rod 80 of the third circuit breaker 3, and the other end is fixedly coupled to the right control arm 26 of the first circuit breaker 1.
  • the cable at the end of the cable 15 is fixedly connected to the left end of the drive rod 80 of the first circuit breaker 1, and the other end is fixedly connected to the right control arm 28 of the second circuit breaker 2.
  • the cable at the end of the cable 16 is fixedly connected to the left end of the drive rod 80 of the third circuit breaker 3, and the other end is fixedly connected to the control arm 27 of the second circuit breaker 2.
  • the cable at the end of the cable 17 is fixedly connected to the right end of the drive rod 80 of the second circuit breaker 2, and the other end is fixedly connected to the left control arm 29 of the third circuit breaker 3.
  • the cable of the cable 18 is fixedly connected to the right end of the drive rod 80 of the first circuit breaker 1, and the other end is fixedly connected to the right control arm 30 of the third circuit breaker 3.
  • the two ends of the cable sleeves of the cables 13, 14, 15, 16, 17, 18 are fixedly connected to the base plate 5 of the corresponding interlocking device, respectively.
  • the structure and operation principle of the interlocking device 4 of each circuit breaker in the circuit breaker group are the same. For the sake of clarity and avoidance of repetition, only the interlocking device 4 of the second circuit breaker 2 will be described below as an example.
  • the interlocking device 4 is fixed to the side panel 6 of the circuit breaker by the base plate 5.
  • a control rod 8 is disposed parallel to the base plate 5, and a shaft 60 is disposed in the middle of the control rod 8, and the shaft 60 is movably coupled to a hole of the base plate 5.
  • the control rod 8 has two bosses 35, 36 at both ends, and the right end is connected to the tension spring 10 at an appropriate position.
  • the lever 8 is rotatable about the axis of the shaft 60 by the tension spring 10.
  • the shape of the lever 8 is shown in FIG.
  • the drive rod, generally designated 80, is numbered 22 in the first circuit breaker 1, 23 in the second circuit breaker 2, and 24 in the third circuit breaker 3.
  • the driving rods 80 are arranged in parallel on the base plate 5, and the middle of the driving rod 80 is fixedly connected with a shaft, and the shaft is movably connected with one hole of the base plate 5.
  • the other end of the shaft is operatively coupled to a plurality of triggers or indicator triggers of the drive of the circuit breaker, for example: to a spindle fixed to the operating mechanism of the circuit breaker 2.
  • the left end of the drive rod 80 is fixedly connected to the cable of the cable 13, and the right end is fixedly connected to the cable of the cable 17.
  • the seat plate 5 is provided with two control arms 27, 28.
  • One end of the control arms 27, 28 has a hole that is movably connected to a shaft fixed to the base plate 5.
  • the other end of the control arm 27 is fixedly connected to the cable of the cable 16 via a roller, and the intermediate portion is connected to the tension spring 11.
  • the other end of the control arm 28 is fixedly coupled to the cable of the cable 15, and the intermediate portion is fixedly coupled to the tension spring 12.
  • the other ends of the tension springs 11, 12 are respectively connected to the base plate 5.
  • Each end of the cable sleeves of the cables 13, 15, 16, 17 is fixed to the base plate 5 by screw terminals.
  • the drive lever 22 of the first circuit breaker 1 When, for example, only the first circuit breaker 1 is closed, the drive lever 22 of the first circuit breaker 1 is rotated to the 1 10 position, thereby tensioning the cables 15, 18 with the tension 1 15 (see Fig. 6). Since the tension 115 tightens the cable 15, the control arm 28 of the second circuit breaker 2 is rotated clockwise (see Figs. 1 and 8), eliminating the restriction on the rotational movement of the lever 8. Due to the limitation of the control arm 27, the lever 8 remains at a distance from the lock shaft 71, at least not affecting the reliable closing of the circuit breaker 2.
  • the third circuit breaker 3 drives the lever 24 to tension the cable 16 with the tension 120, thereby rotating the control arm 27 of the second circuit breaker in a clockwise direction (see FIG. 1 and Figure 7), eliminating its restriction on the rotational movement of the control arm 8. Due to the limitation of the control arm 28, the control arm 8 remains at a distance from the shaft 71 of the locking device, at least not affecting the reliable closing of the circuit breaker 2.
  • the first circuit breaker 1 can also be locked, and when the first and second circuit breakers 1, 2 are closed, It is also possible to lock the third circuit breaker 3 as well.
  • the structural feature of the present invention is: when the control lever 8 is in contact with the lock shaft 71, the control lever 8 is in a contact condition; the contact force of the control lever 8 with the lock shaft 71 is provided by the spring 10. Different from the prior art, the tension of the steel cable is provided; the control rod 8 adopts a bearing support structure, and its repeated positioning and anti-vibration performance are much higher than the elastic support mechanism. Due to the structural features of the present invention, the circuit breaker group of the present invention has the following remarkable effects: safety, stability, reliability, convenient operation and commissioning, low structure, low production cost, long service life, and wide application.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Description

具有连锁装置的断路器组
技术领域
本发明涉及一种具有连锁装置的断路器组, 特别是一种能用于至 少三个断路器间的机械式连锁的断路器组。 背景技术
在多回路供电的配电系统中, 每一回路都装有一断路器, 并且在 回路与回路之间设置有通常是断开的用作联络开关或回路开关的断 路器, 如果其中一个回路因供电失败断路后, 所述用作联络开关或回 路开关的断路器才闭合, 以便确保安装有所述电路断路器的多回路电 力系统以及和所述断路器相连的负载的正确操作和正常供电。
在实际应用中, 为保障安全, 要求电路断路器执行其正常操作功 能以外的一些辅助功能, 例如, 所述的包括联络开关或回路开关用断 路器的断路器组间除了需要电气连锁外, 还需要两个或更多个断路器 间具有机械式连锁功能。
为实现断路器组间的相互连锁, 现有技术采用的机械连锁方法和 装置有钥匙连锁、 杠杆连锁和钢缆连锁, 它们是以运动传递媒介命名 的。 目前采用的钥匙连锁的机械式连锁断路器装置的缺点是: 解除连 锁必须人工到现场去操作, 不能满足自动化控制的要求。
在现有技术中, 还有的机械连锁断路器, 采用了杠杆连锁或钢缆 连锁装置, 或者还组合了钥匙连锁装置, 这些装置的缺点是只能实现 两个断路器的连锁, 如果用于三个断路器间的连锁, 则不能实现任意 组合。 此外, 在目前的技术状态下, 已知断路器的连锁装置, 尽管能 够提供所需的操作功能, 但是仍然具有一些缺点或性能方面的不足。
专利号为 97125954 · 2的发明专利, 公开了一种具有连锁装置的 开关组, 该公知技术的机械式连锁装置公开了如下技术特征: 每一开 关均具有一弹性支承的摇摆件,每一摇摆件与一能锁定相应开关的装 置可操作地连接,每一个开关均具有一与两电缆的两端相连的驱动装 置。 由于这种已知的由摇摆件与电缆組成的机械连锁装置的摇摆件是 弹性支承的, 所以其安装调试难度较大, 重复定位精度和抗振性能较 差, 对于与触发器直接连接的摇摆件, 其重复定位精度与抗振性能差 的问题, 严重影响开关的工作可靠性与稳定性。
具体的说, 由于该现有技术的锁定触发器的作用力直接是电缆的 拉力, 摇摆件的移动是依靠电缆中的钢缆的轴向移动来实现, 从而对 电缆部件的定位精度要求很高, 导致了调试困难、 生产效率低、 加工 成本高等问题。 而且由于在使用过程中, 难以避免出现钢缆连接松动 变形、 钢缆受拉力后伸长等问题, 而这些问题直接破坏了电缆部件的 定位精度, 使锁定操作失灵, 严重影响了产品的安全性、 可靠性、 稳 定性及使用寿命。 发明内容
本发明的目的, 在于克服上述已有技术缺陷, 提供一种具有改进 的机械连锁装置的断路器组, 该断路器既能满足自动化控制的要求, 又能实现多个断路器间连锁 /释放的任意组合,以满足实际需要的操作 功能对产品连锁的不同要求。
本发明的另一重要目的在于, 克服现有技术的断路器机械连锁机 构装置存在的结构原理缺陷, 提供一种安全性、 稳定性、 可靠性好, 操作和调试方便、 生产成本低、 使用寿命长的具有连锁装置的断路器 组。
为了实现上述目的, 本发明采用了如下技术方案。
本发明的具有连锁装置的断路器组, 它包括至少三个断路器和至 少六根缆索, 所述断路器组中的每个断路器均具有连锁装置, 每个断 路器的连锁装置之间藉助于缆索相互连接并传递驱动力, 每个连锁装 置包括驱动部件, 控制部件、 锁定部件、 基座板和缆索机构; 所述的 连锁装置的基座板上设置有至少一个控制杆、 至少一个驱动杆、 至少 两个控制臂及三个弹性元件; 所述的驱动杆与断路器上的驱动机构可 操作地相连接; 所述的控制杆与断路器锁定装置的触发器相连接; 连 接在所述的任一个断路器的驱动杆两端的两根缆索的钢缆分别与另 外两个断路器的一个控制臂相连; 所述的控制臂在所述的钢缆拉力和 所述的弹性元件弹力的共同作用下, 完成对控制杆的运动限制或解除 限制; 所述的控制杆在解除来自控制臂的运动限制后, 在所述的弹性 元件的弹力作用下, 自动完成对断路器的锁定轴的锁定。
本发明所述的驱动部件有一个驱动杆, 驱动杆的两端具有承接缆 索的连接机构, 并通过该连接机构将驱动杆与两根缆索连接; 所述的 驱动杆的中间有一 ^与驱动杆垂直的轴, 该轴的一端与驱动杆固定连 接, 轴的中间与基座板上的接入孔活动连接, 轴的另一端与基座板后 面的操纵断路器断路 /闭合的驱动装置相连接;所述的控制部件包括两 个控制臂, 每个控制臂的一端有一个孔, 该孔与固定在基座板上的轴 活动连接, 使控制臂能绕轴心旋转; 每个控制臂的另一端与缆索的钢 缆固定连接, 该钢缆将驱动杆的驱动力传递到另外两个断路器的控制 臂; 每个控制臂上安装一拉簧, 拉簧的另一端与基座板连接, 拉簧的 拉力与钢缆的拉力方向相反; 所述的控制部件有一个控制杆, 控制杆 的两端有两个凸台, 控制杆中间与一个轴固定连接; 所述的轴与基座 板上的接入孔活动连接, 使控制杆能绕该轴轴心旋转, 所述的轴的另 一端穿过基座板, 可连接到基座板后面的断路器的触发器。 在所述的 控制杆上装有一拉簧, 拉簧的另一端与基座板固定连接; 在控制杆上 的拉簧的拉力与控制臂上的钢缆的拉力的共同作用下, 可使所述的控 制杆上的凸台与控制臂的侧边保持接触或不接触; 所述的缆索由钢缆 和索套组成, 钢缆在索套中间, 当索套两端被固定后, 拉动钢缆使钢 缆与索套产生轴向位移, 从而实现远距离传递轴向运动的功能; 所述 的缆索机构, 其钢缆的一端固定于断路器组的某一个断路器的驱动杆 的一端, 钢缆的另一端固定于断路器组的另一个断路器的控制臂的一 端, 索套的两端分别固定在对应于固定钢缆的两个断路器的基座板 上。
采用本发明的机械连锁装置的断路器组, 当操纵断路器组的其中 一个断路器的驱动装置时, 驱动装置驱动该断路器上的驱动杆转动, 驱动杆的转动驱使连接在驱动杆两端的两根钢缆拉紧, 通过拉紧的两 根钢缆,驱动断路器组的另外两个断路器的控制臂的侧边脱离控制杆 的凸台, 从而解除对目标断路器控制杆的限制, 使目标断路器的控制 杆在拉簧的拉力作用下, 实现所要求的断路器組的连锁; 反之, 当钢 缆放松时, 由于控制臂上的拉簧作用, 可使控制臂复位并与控制杆上 的凸台接触, 从而实现所要求的断路器組的解锁。 根据本发明, 当缆 索按设定的连接方法将断路器组的各个断路器相互连接后, 通过设定 各个断路器的断路 /闭合, 能够实现多个断路器状态的任意的组合,例 如三个断路器中任意两个断路器合闸后, 第三个断路器不能合闸。 附图说明
下面借助附图叙述本发明的实施例:
图 1是本发明的具有连锁装置的相互连接的三个断路器实施例的 侧视图;
图 2是图 1所示的第二断路器的结构示意图;
图 3是安装在第二断路器上没有受到其它断路器驱动装置传动影 响的控制臂 27、 28及受到运动限制的控制杆 8的结构示意图;
图 4是图 3所示的控制杆 8的立体图;
图 5和图 6是笫一断路器的驱动杆 80处于两种位置的示意图; 图 7到图 9是受到其它不同断路器驱动装置的驱动后的第二断路 器的控制臂 27、 28及控制杆 8的最终位置示意图。 具体实施方式
下面结合附图所示的本发明的具体实施例, 进一步详细说明本发 明所述的具有连锁装置的断路器组的具体实施方式。
以下的一个实施例是本发明的由三个断路器组成的断路器組, 以 此说明本发明的连锁装置的工作原理和优点。 本发明涉及的断路器组 不限于由三个断路器组成的断路器组。
如图 1所示, 本发明的断路器组由断路器 1、 2、 3组成。 在三个 断路器上, 每个断路器都有一个连锁装置 4。 每个连锁装置都有一个 基座板 5、 一个驱动杆 80和三个拉簧 10、 1 1、 12。 在三个连锁装置 中, 还包括: 控制臂 25、 26、 27、 28、 29、 30, 控制杆 7、 8、 9, 缆 索 13、 14、 15、 16、 17、 18。 缆索 13—端的钢缆与第二断路器 2的 驱动杆 80的左端固定连接, 另一端与第一断路器 1的左控制臂 25固 定连接。 缆索 14一端的钢缆与第三断路器 3的驱动杆 80的右端固定 连接, 另一端与第一断路器 1的右控制臂 26固定连接。 缆索 15—端 的钢缆与第一断路器 1 的驱动杆 80的左端固定连接, 另一端与第二 断路器 2的右控制臂 28固定连接。缆索 16—端的钢缆与第三断路器 3的驱动杆 80的左端固定连接, 另一端与第二断路器 2的控制臂 27 固定连接。 缆索 17—端的钢缆与第二断路器 2的驱动杆 80的右端固 定连接, 另一端与第三断路器 3的左控制臂 29固定连接。 缆索 18— 端的钢缆与第一断路器 1 的驱动杆 80的右端固定连接, 另一端与第 三断路器 3的右控制臂 30固定连接。 缆索 13、 14、 15、 16、 17、 18 的索套的两端分别与对应的连锁装置的基座板 5固定连接。 断路器組 中的每一个断路器的连锁装置 4的结构和动作原理是相同的, 为了筒 明和避免重复, 下面仅以第二断路器 2的连锁装置 4为例进行描述。
从图 2、 图 3、 图 4可见, 连锁装置 4通过基座板 5与断路器的 侧板 6固定。 平行于基座板 5设置一控制杆 8 , 控制杆 8的中间有一 轴 60, 轴 60与基座板 5的一个孔活动连接。 控制杆 8的两端有两个 凸台 35、 36, 右端适当位置与拉簧 10连接。 在限制条件完全消除时, 在拉簧 10的作用下, 控制杆 8能绕轴 60的轴心旋转。 控制杆 8的形 状由图 4示出。 以总体标号 80标出的驱动杆, 在第一断路 1 中的标 号为 22, 在第二断路器 2中的标号为 23 , 在第三断路器 3中的标号 为 24。 所述的驱动杆 80平行地设置在基座板 5上,驱动杆 80的中间 与一轴固定连接, 轴与基座板 5的一个孔活动连接。 轴的另一端与断 路器的驱动装置的诸多触发器或指示器触发器可操作地相连接, 例 如: 与固定于断路器 2的操作机构的主轴相连。 驱动杆 80的左端与 缆索 13的钢缆固定连接, 右端与缆索 17的钢缆固定连接。 平行于基 座板 5 , 设置有两个控制臂 27、 28ο 控制臂 27、 28的一端有一个孔, 该孔与固定在基座板 5上的轴活动连接。 控制臂 27的另一端通过一 个滚轮与缆索 16的钢缆固定连接, 中间适当部位与拉簧 11连接。 控 制臂 28的另一端与缆索 15的钢缆固定连接,中间适当部位与拉簧 12 固定连接。 拉簧 11、 12的另一端分别与基座板 5连接。 缆索 13、 15、 16、 17的索套的每一端均用螺纹端子与基座板 5固定。
下面用图 1、 图 5、 图 6、 图 7、 图 8、 图 9, 对本发明连锁机构 的工作原理进行描述。
当所有三个断路器 1、 2、 3都处于打开位置时, 控制臂 27上方 受到拉簧 1 1的拉力, 下方受到钢缆 16的拉力, 它所处的位置能使控 制杆 8上的凸台 35接触到其侧边时,控制杆 8与锁定装置 71接触(参 见图 9 ) 或不接触 (参见图 8 ) , 至少不能对断路器可靠合闸产生影 响。 控制臂 28下方受到拉簧 10的拉力, 上方受到钢缆 15的拉力, 它所处的位置能使控制杆 8上的凸台 36接触到其侧边时, 控制杆 8 与锁定轴 71接触或不接触, 至少不能对断路器可靠合闸产生影响。
当例如只有第一断路器 1合闸时, 第一断路器 1的驱动杆 22旋 转至 1 10位置, 从而以拉力 1 15来拉紧钢缆 15、 18 (见图 6 ) 。 由于 拉力 115拉紧了钢缆 15 , 所以使第二断路器 2的控制臂 28作顺时针 旋转 (见图 1和图 8 ) , 消除其对控制杆 8旋转运动的限制。 由于受 到控制臂 27限制, 控制杆 8仍保持与锁定轴 71有一定距离, 至少不 能影响断路器 2的可靠合闸。
当例如只有第三断路器 3合闸时, 第三断路器 3驱动杆 24以拉 力 120拉紧钢缆 16, 从而使第二断路器的控制臂 27以顺时针方向作 旋转 (见图 1和图 7 ) , 消除其对控制臂 8旋转运动的限制。 由于受 到控制臂 28限制, 控制臂 8仍保持与锁定装置的轴 71有一定距离, 至少不能影响断路器 2的可靠合闸。
当例如第一断路器 1和第三断路器 3都合闸时, 断路器 1、 3的 驱动装置将使驱动杆 22、 24旋转,从而以拉力 125、 126拉紧 15、 16、 18、 14 (见图 9 ) 。 由于钢缆 15、 16拉紧移动, 控制臂 27、 28都做 顺时针方向运动, 使它们对控制杆 8的旋转运动的限制消除, 控制杆 8在拉簧 10的作用下, 作逆时针旋转, 与锁定装置的轴 71接触, 防 止了第二断路器 2的关闭。
以一种完全相同的方式, 即在第二和第三断路器 2、 3 关闭的情 况下, 也可以来锁定第一断路器 1 , 并且在第一和第二断路器 1、 2 关闭时, 同样也可以来锁定第三断路器 3。
从实施例及附图可见, 本发明的结构特点是: 当控制杆 8与锁定 轴 71接触时, 控制杆 8处于接触条件状态; 控制杆 8与锁定轴 71的 接触力是由弹簧 10提供的, 不同于现有技术由钢缆的拉力提供; 控 制杆 8采用了轴承支撑结构, 其重复定位、 抗振性能都大大高于弹性 支撑机构。 由于本发明结构特点, 保证了本发明的断路器组具有以下 显著的效果: 安全性、 稳定性、 可靠性好, 操作调试方便, 结构筒单、 生产成本低、 使用寿命长, 用途广泛等。

Claims

权 利 要 求 书
1. 一种具有连锁装置的断路器组, 它包括至少三个断路器( 1、 2、 3 ) 和至少六根缆索 ( 13、 14、 15、 16、 17、 18 ) , 所述断路器組中 的每个断路器均具有连锁装置 4, 每个断路器的连锁装置之间藉助于 缆索相互连接并传递驱动力,
其特征在于:
每个连锁装置包括驱动部件, 控制部件、 锁定部件、 基座板和缆索 机构;
所述的连锁装置 4的基座板 5上设置有至少一个控制杆 8、至少一 个驱动杆 80、 至少两个控制臂及三个弹性元件;
所述的控制杆 8与断路器锁定装置的触发器相连接;
所述的驱动杆 80与断路器上的驱动机构可操作地相连接;
连接在所述的任一个断路器的驱动杆 80两端的两根缆索的钢缆分 别与另外两个断路器的一个控制臂相连;
所述的控制臂在所述的钢缆拉力和所述的弹性元件弹力的共同作 用下, 完成对控制杆 8的运动限制或解除限制;
所述的控制杆 8在解除来自控制臂的运动限制后,在所述的弹性元 件的弹力作用下, 自动完成对断路器的锁定轴 71的锁定。
2.根据权利要求 1所述的断路器组, 其特征在于: 所述驱动杆 80 的两端具有承接钢缆的结构, 并且所述驱动杆 80上有一个接入基座 板 5的轴, 该轴与基座板 5上的对应的孔相配合, 使该驱动杆 80能 在平行于基座板 5的平面上转动。
3.根据权利要求 1所述的断路器组, 其特征在于: 所述控制臂的 一端有一个孔, 该孔与固定在基座板 5上的轴活动连接, 使该控制臂 能在平行于基座板 5的平面上摆动; 所述每个控制臂分别与钢缆和弹 性元件相连接, 使其在所述的钢缆拉力和所述的弹性元件弹力的共同 作用下, 完成对控制杆 8的运动限制或解除限制。
4.根据权利要求 1所述的断路器组, 其特征在于: 所述控制杆 8 的中间有一个接入基座板 5的轴, 该轴与基座板 5上的对应的孔相配 合, 使该控制杆 8能在平行于基座板 5的平面上转动; 控制杆 8的运 动因其两端受到阻挡而被限制。
5.根据权利要求 1所述的断路器组, 其特征在于: 所述缆索包括 钢缆、 索套、 螺紋端子和钢缆接线装置, 钢缆可活动地穿入索套, 索 套两端有螺紋端子, 钢缆两端有接线装置; 索套藉助于螺紋端子与基 座板 5固定连接; 钢缆藉助于接线装置与驱动杆、 控制臂固定连接。
6.根据权利要求 1所述的断路器组, 其特征在于: 所述的弹性元 件是拉簧、 片簧或扭簧, 其一端与控制臂或控制杆连接, 另一端与基 座板 5连接, 所述的弹性元件作用于控制臂上的弹力与钢缆的拉力方 向相反; 所述的弹性元件作用于控制杆 8上的弹力方向与基座板 5平 行。
7.根据权利要求 1 - 5 中任一个所述的断路器组, 其特征在于, 驱动杆 80、 控制臂 25和缆索之间应具有如下连接关系, 连接在第一 断路器 1的驱动杆 22两端的钢缆 15、 18分别与第二断路器 2的控制 臂 28、 第三断路器 3的控制臂 30连接; 连接在第二断路器 2的驱动 杆 23两端的钢缆 13、 17分别与第一断路器 1的控制臂 25、第三断路 器 3的控制臂 29连接; 连接在第三断路器 3的驱动杆 24两端的钢缆 16、 14分别与第二断路器 2的控制臂 27、 第一断路器 1的控制臂 26 连接。
8.根据权利要求 3或 4所述的断路器组, 其特征在于: 所述的控 制杆 8与控制臂直接接触, 即它们之间没有过渡元件。
9.根据权利要求 3或 4所述的断路器组, 其特征在于: 在控制杆 8或控制臂上至少有一个用于接触的过渡元件, 如凸台、 档块、 销轴 等。
10. 根据权利要求 3或 4所述的断路器组, 其特征在于: 弹性元 件与控制臂或控制杆之间的连接不通过过渡元件。
1 1. 根据权利要求 3或 4所述的断路器组, 其特征在于: 弹性元 件与控制臂或控制杆之间,至少通过一个过渡元件连接,该元件如柱、 钩、 台等。
12. 根据权利要求 2 - 5中任一个所述的断路器组,其特征在于: 所述的基座板 5与驱动杆 80、控制臂或控制杆 8之间的支承系统为孔 一轴支承或、 轴一孔支承或、 槽一轴支承或、 轴一槽支承; 所述的轴 的轴心与基座板 5的平面垂直。
13. 根据权利要求 7所述的断路器組, 其特征在于: 所述的钢缆 与驱动杆 80或控制臂的连接是直接相连接, 或者通过至少一个过渡 元件连接, 所述的过渡元件如销轴、 轴套、 挂钩、 滚轮。
PCT/CN2007/002062 2006-07-03 2007-07-03 Ensemble coupe-circuit avec dispositif d'enclenchement WO2008006296A1 (fr)

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