WO2018119877A1 - 一种负荷开关 - Google Patents

一种负荷开关 Download PDF

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Publication number
WO2018119877A1
WO2018119877A1 PCT/CN2016/113012 CN2016113012W WO2018119877A1 WO 2018119877 A1 WO2018119877 A1 WO 2018119877A1 CN 2016113012 W CN2016113012 W CN 2016113012W WO 2018119877 A1 WO2018119877 A1 WO 2018119877A1
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WO
WIPO (PCT)
Prior art keywords
fixing ring
auxiliary
column
load switch
main
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PCT/CN2016/113012
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English (en)
French (fr)
Inventor
张金风
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张金风
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Application filed by 张金风 filed Critical 张金风
Publication of WO2018119877A1 publication Critical patent/WO2018119877A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers

Definitions

  • the invention relates to the field of switch technology, in particular to a load switch.
  • a switch means on and off. It refers to an electronic component that can open a circuit, interrupt current, or cause it to flow to other circuits.
  • the principle of the switch is that the "closed" of the contact indicates that the electronic contact is conducting, allowing current to flow; "open” means that the electronic contact is not conducting to form an open circuit, and no current is allowed to flow.
  • the load switch is a kind of switching device between the circuit breaker and the isolating switch. It has a simple arc extinguishing device that can cut off the rated load current and a certain overload current, but cannot cut off. Short circuit current.
  • the present invention provides a load switch that solves the problem of inconvenient adjustment after installation of the existing load switch.
  • a load switch includes a sealed box body, and an insulating sleeve is disposed on a box wall on both sides of the sealed box body, and two inside the sealed box body Two insulating shafts are disposed between the insulating sleeves, and a top fixing mechanism is disposed at a top of the sealed box body, and auxiliary fixing mechanisms are disposed on both sides of the top main fixing mechanism of the sealing box body.
  • the main fixing mechanism includes a fixing ring
  • the fixing ring includes a lower fixing ring piece and an upper fixing ring piece
  • two fastening bolts are disposed on the curved surfaces on both sides of the lower fixing ring piece and the upper fixing ring piece
  • the lower fixing ring piece and the upper fixing ring piece are respectively provided with fastening screw holes corresponding to the fastening bolts, and the fixing ring interior
  • the fastening bolts are fixedly connected with a rubber pad, the diameter of the rubber pad is larger than the diameter of the fastening bolt, and the side surface of each of the rubber pads away from the fastening bolt is uniformly distributed with anti-slip particles.
  • the auxiliary fixing mechanism includes an auxiliary support column disposed at the top of the sealed box, and the auxiliary support column is movably connected to the auxiliary connecting column through a pin shaft, and one side of the auxiliary connecting column is provided with a groove, and the groove is An auxiliary connecting extension column is disposed inside, the auxiliary connecting extension column has a length greater than a length of the groove, and the auxiliary connecting column is provided with a lower fastening plate near a side surface on which the groove is opened, the lower fastening plate a positioning plate is disposed on a side of the auxiliary connecting extension column near the groove, and the positioning plate is provided with a spiral through hole, and the screw through hole has a screw inserted therein, and the screw is close to the bottom
  • One end of the solid plate is provided with an upper fastening plate, and one side of the lower fastening plate adjacent to the upper fastening plate is provided with a rubber plate pad, and the lower fastening plate surface and the lower fastening plate lower surface The distance between them is smaller than
  • the lower fixing ring piece and the upper fixing ring piece are connected by four connecting bolts and a connecting nut, and the lower fixing ring piece and the upper fixing ring piece are respectively provided with connecting screw holes corresponding to the connecting bolts.
  • the limiting hole is equidistantly arranged in the groove on the auxiliary connecting column and the auxiliary connecting extending column, and the limiting connecting hole between the auxiliary connecting column and the auxiliary connecting extending column passes the limit The pins are connected.
  • the bottom of the fixing ring is fixedly connected with a main connecting post, and the end of the main connecting post away from the fixing ring is movably connected to the main supporting column through a pin, the main supporting column is away from one end of the main connecting post and the sealed box The top is fixedly connected.
  • the two auxiliary fixing mechanisms are symmetrically distributed on both sides of the main fixing mechanism with the vertical center line of the sealed box as a symmetry axis.
  • the load switch can be stably fixed to the required fixed part by setting the main fixing mechanism, and then tightened by the fastening bolt on the main fixing mechanism, which greatly facilitates the adjustment of the load switch by the worker. s position.
  • the load switch can be auxiliaryly fixed to the load switch by providing an auxiliary fixing mechanism. While assisting the fixing, the worker can adjust the position of the load switch by adjusting the tightening of the screw, which is more convenient to use. The work of the staff provides great convenience.
  • the load switch is more convenient for the worker to adjust the relationship between the main fixing mechanism and the auxiliary fixing mechanism and the load switch by movably connecting the main supporting column with the main connecting column and then movably connecting the auxiliary supporting column and the auxiliary connecting column.
  • the angle is more convenient to use.
  • the load switch is more convenient for the staff to adjust the height of the auxiliary connecting extension column by setting the limiting hole and the limiting pin shaft, and the adjustment is more flexible.
  • the load switch has simple structure, convenient operation and strong practicability, and provides great convenience for the work of the staff.
  • Figure 1 is a schematic structural view of the present invention
  • Figure 2 is a partial enlarged view of A-A of the present invention.
  • Figure 3 is a side view showing the structure of the main fixing mechanism of the present invention.
  • Figure 4 is a side view showing the structure of the auxiliary fixing mechanism of the present invention.
  • a load switch includes a sealed box body 1 Two insulating shafts 3 are disposed between the two insulating sleeves 2, and the top of the sealing box body 1 is provided with a main fixing mechanism 4, and the auxiliary fixing mechanism 5 is disposed on both sides of the top main fixing mechanism 4 of the sealing box body 1, two The auxiliary fixing mechanisms 5 are symmetrically distributed on both sides of the main fixing mechanism 4 with the vertical center line of the sealed casing 1 as a symmetry axis.
  • the load switch can be auxiliaryly fixed, and the auxiliary load can be operated at the same time.
  • the person can also adjust the position of the load switch by adjusting the tightness of the screw 17, which is more convenient to use and provides great convenience for the work of the staff.
  • the main fixing mechanism 4 includes a fixing ring.
  • the bottom of the fixing ring is fixedly connected with the main connecting post 22 .
  • the end of the main connecting post 22 away from the fixing ring is movably connected to the main supporting column 6 through the pin shaft, and the main supporting column 6 is away from the main connecting post 22 .
  • One end is fixedly connected with the top of the sealed box body 1, which is more convenient for the worker to adjust the angle between the main fixing mechanism 4 and the auxiliary fixing mechanism 5 and the load switch, so that the wiring of the worker is convenient, and the use is more convenient.
  • the fixing ring includes the lower fixing ring piece.
  • connection screw holes are more convenient for the worker to disassemble the fixing ring, and the fixing is also more convenient.
  • Two fastening bolts 9 are arranged on the arc surfaces on both sides of the lower fixing ring piece 7 and the upper fixing ring piece 8, and the lower fixing is provided.
  • a fastening screw hole corresponding to the fastening bolt 9 is respectively disposed on the ring piece 7 and the upper fixing ring piece 8.
  • the fastening bolt 9 inside the fixing ring is fixedly connected with the rubber pad 10, and the diameter of the rubber pad 10 is larger than the tightness.
  • the diameter of the fixing bolt 9 An evenly distributed non-slip particle 24 is disposed on one side of each rubber pad 10 away from the fastening bolt 9 and is pressed against each other by the fastening bolt 9
  • the load switch is fixed on the column to be fixed, and the non-slip particles 24 effectively improve the fixing effect, and the fixing is more reliable.
  • the worker can also move the position of the load switch on the column by adjusting the fastening bolt 9, which is more convenient to use.
  • the auxiliary fixing mechanism 5 includes an auxiliary support column 11 disposed at the top of the sealed casing 1.
  • the auxiliary support column 11 is movably connected to the auxiliary connecting column 12 through the pin shaft, so that the angle between the load switch and the column can be more conveniently adjusted by the worker.
  • auxiliary connecting column 12 is provided with a groove 13
  • the inside of the groove 13 is provided with an auxiliary connecting extension column 14
  • the length of the auxiliary connecting extension column 14 is greater than the length of the groove 13
  • the groove 13 on the auxiliary connecting column 12 is
  • the auxiliary connecting extension column 14 are respectively provided with the equidistantly arranged limiting holes 21, and the auxiliary connecting column 12 and the limiting hole 21 on the auxiliary connecting extension column 14 are connected by the limiting pin shaft 22, and the auxiliary connecting extension column 14 can move up and down inside the groove 13 to achieve the purpose of increasing the fixed range of the auxiliary fixing mechanism 5, and at the same time, the worker can extend the auxiliary connecting column 12 and the auxiliary connecting column through the limiting hole 21 and the limiting pin 22 14 is fixedly connected together, and the number of the limiting holes 21 is plural.
  • the worker can connect the different limiting holes 21 through the limiting pin 22, which is more convenient for the worker to adjust the auxiliary connecting extension column 14.
  • the adjustment is more flexible.
  • the auxiliary connecting post 12 is provided with a lower fastening plate 15 on a side near which the groove 13 is opened, and the lower fastening plate 15 is located at the bottom of the groove 13, and the auxiliary connecting extension column 14 is close to the groove 13
  • a positioning plate 16 is disposed on one side of the positioning plate 16 , and a spiral through hole is defined in the positioning plate 16 .
  • the screw 17 is inserted through the screw 17 , and the upper end of the screw 17 is disposed near the lower fastening plate 15 .
  • a rubber plate pad 19 is disposed on one side of the fixing plate 15 adjacent to the upper fastening plate 18.
  • the distance between the upper surface of the lower fastening plate 15 and the lower surface of the upper fastening plate 18 is smaller than the length of the screw 17, and is tight.
  • the horizontal central axis of the distance between the upper surface of the solid plate 15 and the positioning plate 16 is on the same horizontal plane as the central axis of the fixing ring, and the distance between the fastening plate 15 and the upper fastening plate 18 is controlled by the adjusting screw 17, so that the auxiliary fixing is performed.
  • the mechanism 5 is fastened and fixed on the column. When the adjustment is needed, the worker only needs to adjust the tightness of the screw 17, so that the position of the auxiliary fixing mechanism 5 can be adjusted, and the rubber pad 10 and the rubber pad 19 are effectively improved.
  • the load switch is fixed on the column by the main fixing mechanism 4 and the auxiliary fixing mechanism 5, and the worker can first control the fastening degree of the fixing ring by adjusting the fastening bolt 9, and then adjust the fastening of the auxiliary fixing mechanism 5 by the screw 17.
  • the degree allows the position of the load switch on the column to be more easily adjusted.
  • the load switch can adjust the position more conveniently, and the flexibility is greatly improved, which provides great convenience for the work of the staff.

Abstract

一种负荷开关，包括密封箱体（1），所述密封箱体（1）两侧的箱壁上均设置有绝缘套管（2），所述密封箱体（1）内部的两个绝缘套管（2）之间设置有两个绝缘轴（3），所述密封箱体（1）的顶部设置有主固定机构（4），所述密封箱体（1）顶部主固定机构（4）的两侧均设置有辅助固定机构（5），所述主固定机构（4）包括固定环，固定环包括下固定环片（7）和上固定环片（8）。该负荷开关，能将负荷开关稳定的固定在所需要固定的部位，再通过主固定机构（4）上的紧固螺栓（9）调节松紧，方便了工作人员调节负荷开关的位置；能对负荷开关进行辅助固定，还能通过调节螺杆（17）的松紧来对负荷开关的位置进行调节，使用方便。

Description

一种负荷开关 技术领域
本发明涉及开关技术领域，具体为一种负荷开关。
背景技术
开关意为开启和关闭，它是指一个可以使电路开路、使电流中断或使其流到其他电路的电子元件。开关的原理是接点的“闭合”(closed)表示电子接点导通，允许电流流过；“开路”(open)表示电子接点不导通形成开路，不允许电流流过。
开关的种类有很多，其中包括负荷开关，负荷开关是介于断路器和隔离开关之间的一种开关电器，具有简单的灭弧装置，能切断额定负荷电流和一定的过载电流，但不能切断短路电流。
现有的负荷开关安装完成后不方便调节。现在需要一种新型技术方案来解决上述问题。
发明内容
(一)解决的技术问题
针对现有技术的不足，本发明提供了一种负荷开关，解决了现有的负荷开关安装后不方便调节的问题。
(二)技术方案
为实现以上目的，本发明通过以下技术方案予以实现：一种负荷开关，包括密封箱体，所述密封箱体两侧的箱壁上均设置有绝缘套管，所述密封箱体内部的两个绝缘套管之间设置有两个绝缘轴，所述密封箱体的顶部设置有主固定机构，所述密封箱体顶部主固定机构的两侧均设置有辅助固定机构。
所述主固定机构包括固定环，固定环包括下固定环片和上固定环片，所述下固定环片和上固定环片两侧的弧面上均设置有两个紧固螺栓，所述下固定环片和上固定环片上均开设有与紧固螺栓相对应的紧固螺孔，固定环内部 的紧固螺栓上均固定连接有橡胶垫，所述橡胶垫的直径大于紧固螺栓的直径，每个所述橡胶垫远离紧固螺栓的一侧面上均设置有均匀分布的防滑颗粒。
所述辅助固定机构包括设置在密封箱体顶部的辅助支撑柱，所述辅助支撑柱通过销轴与辅助连接柱活动连接，所述辅助连接柱的一侧开设有凹槽，所述凹槽的内部设置有辅助连接延伸柱，所述辅助连接延伸柱的长度大于凹槽的长度，所述辅助连接柱靠近其开设有凹槽的一侧面上设置有下紧固板，所述下紧固板位于凹槽的底部，所述辅助连接延伸柱靠近凹槽的一侧面上设置有定位板，所述定位板上开设有螺旋通孔，螺旋通孔的内部贯穿有螺杆，所述螺杆靠近下紧固板的一端设置有上紧固板，所述下紧固板与上紧固板相邻的一侧面上均设置有橡胶板垫，所述下紧固板上表面与上紧固板下表面之间的距离小于螺杆的长度，所述下紧固板上表面与定位板之间距离的水平中轴线与固定环的中轴线处于同一水平面上。
优选的，所述下固定环片和上固定环片通过四个连接螺栓和连接螺母相连接，所述下固定环片和上固定环片上均开设有与连接螺栓相对应的连接螺孔。
优选的，所述辅助连接柱上的凹槽内和辅助连接延伸柱上均开设有等距离排列的限位孔，所述辅助连接柱与辅助连接延伸柱上的限位孔之间通过限位销轴相连接。
优选的，固定环的底部固定连接有主连接柱，所述主连接柱远离固定环的一端通过销轴与主支撑柱活动连接，所述主支撑柱远离主连接柱的一端与密封箱体的顶部固定连接。
优选的，两个所述辅助固定机构以密封箱体的竖直中心线为对称轴对称分布在主固定机构的两侧。
(三)有益效果
本发明提供了一种负荷开关，具备以下有益效果：
(1)该负荷开关，通过设置主固定机构，能将负荷开关稳定的固定在所需要固定的部位，再通过主固定机构上的紧固螺栓调节松紧，极大的方便了工作人员调节负荷开关的位置。
(2)该负荷开关，通过设置辅助固定机构，能对负荷开关进行辅助固定，在辅助固定的同时，工作人员还能通过调节螺杆的松紧来对负荷开关的位置进行调节，使用更加方便，为工作人员的工作提供了极大的便利。
(3)该负荷开关，通过将主支撑柱与主连接柱活动连接，再通过将辅助支撑柱与辅助连接柱活动连接，更加方便了工作人员调整主固定机构和辅助固定机构与负荷开关之间的角度，使用更加方便。
(4)该负荷开关，通过设置限位孔和限位销轴，更加方便了工作人员调节辅助连接延伸柱的高度，调节更加灵活。
(5)该负荷开关，结构简单，操作方便，实用性强，为工作人员的工作提供了极大的便利。
附图说明
图1为本发明结构示意图；
图2为本发明A-A的局部放大图；
图3为本发明主固定机构的结构侧视图；
图4为本发明辅助固定机构的结构侧视图。
图中：1密封箱体、2绝缘套管、3绝缘轴、4主固定机构、5辅助固定机构、6主支撑柱、7下固定环片、8上固定环片、9紧固螺栓、10橡胶垫、11辅助支撑柱、12辅助连接柱、13凹槽、14辅助连接延伸柱、15下紧固板、16定位板、17螺杆、18上紧固板、19橡胶板垫、20连接螺栓、21限位孔、22限位销轴、23主连接柱、24防滑颗粒。
具体实施方式
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。
请参阅图1-4，本发明提供一种技术方案：一种负荷开关，包括密封箱体1，密封箱体1两侧的箱壁上均设置有绝缘套管2，密封箱体1内部的两个绝缘套管2之间设置有两个绝缘轴3，密封箱体1的顶部设置有主固定机构4，密封箱体1顶部主固定机构4的两侧均设置有辅助固定机构5，两个辅助固定机构5以密封箱体1的竖直中心线为对称轴对称分布在主固定机构4的两侧，通过设置主固定机构4，能将负荷开关稳定的固定在所需要固定的部位，再通过主固定机构4上的紧固螺栓9调节松紧，极大的方便了工作人员调节负荷开关的位置，通过设置辅助固定机构5，能对负荷开关进行辅助固定，在辅助固定的同时，工作人员还能通过调节螺杆17的松紧来对负荷开关的位置进行调节，使用更加方便，为工作人员的工作提供了极大的便利。
主固定机构4包括固定环，固定环的底部固定连接有主连接柱22，主连接柱22远离固定环的一端通过销轴与主支撑柱6活动连接，主支撑柱6远离主连接柱22的一端与密封箱体1的顶部固定连接，更加方便了工作人员调整主固定机构4和辅助固定机构5与负荷开关之间的角度，方便工作人员布线，使用更加方便，固定环包括下固定环片7和上固定环片8，下固定环片7和上固定环片8通过四个连接螺栓20和连接螺母相连接，下固定环片7和上固定环片8上均开设有与连接螺栓20相对应的连接螺孔，更加方便了工作人员拆卸固定环，固定也更加方便，下固定环片7和上固定环片8两侧的弧面上均设置有两个紧固螺栓9，下固定环片7和上固定环片8上均开设有与紧固螺栓9相对应的紧固螺孔，固定环内部的紧固螺栓9上均固定连接有橡胶垫10，橡胶垫10的直径大于紧固螺栓9的直径，每个橡胶垫10远离紧固螺栓9的一侧面上均设置有均匀分布的防滑颗粒24，通过紧固螺栓9相互挤压，将负 荷开关固定在需要固定的柱子上，防滑颗粒24有效提高了固定的效果，固定更加牢靠，工作人员还能通过调节紧固螺栓9，将负荷开关在柱子上的位置移动，使用更加方便。
辅助固定机构5包括设置在密封箱体1顶部的辅助支撑柱11，辅助支撑柱11通过销轴与辅助连接柱12活动连接，能使工作人员更加方便的调节负荷开关与柱子之间的角度，辅助连接柱12的一侧开设有凹槽13，凹槽13的内部设置有辅助连接延伸柱14，辅助连接延伸柱14的长度大于凹槽13的长度，辅助连接柱12上的凹槽13内和辅助连接延伸柱14上均开设有等距离排列的限位孔21，辅助连接柱12与辅助连接延伸柱14上的限位孔21之间通过限位销轴22相连接，辅助连接延伸柱14能在凹槽13的内部上下移动，以达到增大辅助固定机构5固定范围的目的，同时，工作人员可以通过限位孔21和限位销轴22将辅助连接柱12与辅助连接延伸柱14固定连接在一起，限位孔21的数量有多个，工作人员可以通过将不同的限位孔21通过限位销轴22相连接，更加方便了工作人员调节辅助连接延伸柱14的高度，调节更加灵活，辅助连接柱12靠近其开设有凹槽13的一侧面上设置有下紧固板15，下紧固板15位于凹槽13的底部，辅助连接延伸柱14靠近凹槽13的一侧面上设置有定位板16，定位板16上开设有螺旋通孔，螺旋通孔的内部贯穿有螺杆17，螺杆17靠近下紧固板15的一端设置有上紧固板18，下紧固板15与上紧固板18相邻的一侧面上均设置有橡胶板垫19，下紧固板15上表面与上紧固板18下表面之间的距离小于螺杆17的长度，下紧固板15上表面与定位板16之间距离的水平中轴线与固定环的中轴线处于同一水平面上，通过调节螺杆17控制紧固板15与上紧固板18之间的距离，使辅助固定机构5紧固的固定在柱子上，在需要调节的时候，工作人员只需要调节螺杆17的松紧程度，就能使辅助固定机构5的位置得到调节，橡胶垫10和橡胶板垫19有效提高了主固定机构4和辅助固定机构5与柱子之间连接的紧密程度，该负荷开关，结构 简单，操作方便，实用性强，为工作人员的工作提供了极大的便利。
使用时，负荷开关通过主固定机构4和辅助固定机构5固定在柱子上，工作人员可以先通过调节紧固螺栓9控制固定环的紧固程度，再通过螺杆17调节辅助固定机构5的紧固程度，使负荷开关在柱子上的位置能更方便的得到调节。
综上所述，该负荷开关，能更加方便的调节位置，灵活性大大提高，为工作人员的工作提供了极大的便利。
并且，能达到很好的固定效果，双重固定，更加牢靠。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下。由语句“包括一个......限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素”。
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 (5)

  1. 一种负荷开关，包括密封箱体(1)，其特征在于：所述密封箱体(1)两侧的箱壁上均设置有绝缘套管(2)，所述密封箱体(1)内部的两个绝缘套管(2)之间设置有两个绝缘轴(3)，所述密封箱体(1)的顶部设置有主固定机构(4)，所述密封箱体(1)顶部主固定机构(4)的两侧均设置有辅助固定机构(5)；
    所述主固定机构(4)包括固定环，固定环包括下固定环片(7)和上固定环片(8)，所述下固定环片(7)和上固定环片(8)两侧的弧面上均设置有两个紧固螺栓(9)，所述下固定环片(7)和上固定环片(8)上均开设有与紧固螺栓(9)相对应的紧固螺孔，固定环内部的紧固螺栓(9)上均固定连接有橡胶垫(10)，所述橡胶垫(10)的直径大于紧固螺栓(9)的直径，每个所述橡胶垫(10)远离紧固螺栓(9)的一侧面上均设置有均匀分布的防滑颗粒(24)；
    所述辅助固定机构(5)包括设置在密封箱体(1)顶部的辅助支撑柱(11)，所述辅助支撑柱(11)通过销轴与辅助连接柱(12)活动连接，所述辅助连接柱(12)的一侧开设有凹槽(13)，所述凹槽(13)的内部设置有辅助连接延伸柱(14)，所述辅助连接延伸柱(14)的长度大于凹槽(13)的长度，所述辅助连接柱(12)靠近其开设有凹槽(13)的一侧面上设置有下紧固板(15)，所述下紧固板(15)位于凹槽(13)的底部，所述辅助连接延伸柱(14)靠近凹槽(13)的一侧面上设置有定位板(16)，所述定位板(16)上开设有螺旋通孔，螺旋通孔的内部贯穿有螺杆(17)，所述螺杆(17)靠近下紧固板(15)的一端设置有上紧固板(18)，所述下紧固板(15)与上紧固板(18)相邻的一侧面上均设置有橡胶板垫(19)，所述下紧固板(15)上表面与上紧固板(18)下表面之间的距离小于螺杆(17)的长度，所述下紧固板(15)上表面与定位板(16)之间距离的水平中轴线与固定环的中轴线处于同一水平面上。
  2. 根据权利要求1所述的一种负荷开关，其特征在于：所述下固定环片(7)和上固定环片(8)通过四个连接螺栓(20)和连接螺母相连接，所述下固定环片(7)和上固定环片(8)上均开设有与连接螺栓(20)相对应的连接螺孔。
  3. 根据权利要求1所述的一种负荷开关，其特征在于：所述辅助连接柱(12)上的凹槽(13)内和辅助连接延伸柱(14)上均开设有等距离排列的限位孔(21)，所述辅助连接柱(12)与辅助连接延伸柱(14)上的限位孔(21)之间通过限位销轴(22)相连接。
  4. 根据权利要求1所述的一种负荷开关，其特征在于：固定环的底部固定连接有主连接柱(23)，所述主连接柱(23)远离固定环的一端通过销轴与主支撑柱(6)活动连接，所述主支撑柱(6)远离主连接柱(23)的一端与密封箱体(1)的顶部固定连接。
  5. 根据权利要求1所述的一种负荷开关，其特征在于：两个所述辅助固定机构(5)以密封箱体(1)的竖直中心线为对称轴对称分布在主固定机构(4)的两侧。
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