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A technology of high-voltage switches and transmissions, applied in high-voltage/high-current switches, electric switches, high-voltage air circuit breakers, etc., can solve the problems of violating the miniaturization design of high-voltage circuit breakers, improve the breaking and closing capabilities, reduce Product cost, effect of improving service life
Active Publication Date: 2015-01-07
BEIJING HEZONG SCI & TECH CO LTD
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Abstract
Description
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Problems solved by technology
[0011] This solution requires enough space between the crank arm and the insulating pull rod to install the adjusting rod, which violates the current concept of miniaturization design of high-voltage circuit breakers; and this solution also has the first two disadvantages of prior art 1
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specific Embodiment approach
[0029] The preferred embodiment of the novel high-voltage switch switching transmission device of the present invention is:
[0030] It includes a main shaft and an insulating pull rod, the main shaft is provided with a crank arm, the outer end of the crank arm is provided with a slider, the insulating pull rod is provided with an insulating pull rod insert, and the insulating pull rod insert is provided with threads. The insulating pull rod insert passes through the central hole of the slider, and the insulating pull rod inserts on both sides of the slider are respectively provided with fixing nuts.
[0031] Both ends of the slider are respectively provided with a shaft head, and the outer end of the crank arm is provided with an oblong hole, and the shaft head is inserted into the oblong hole.
[0032] The slider is provided with a threaded hole for installing the mechanical characteristic detection equipment of the high voltage switch.
[0033] An elastic washer is arrange...
specific Embodiment
[0036] Such as Figure 3a , Figure 3b , Figure 3c As shown, including: insulating rods, sliders, crank arms, spindles and guide plates, etc. The technical content of specific embodiment is realized through the following measures:
[0037] Arm installation:
[0038] Install the crank arm and bushing on the main shaft (the shape of the crank arm is as follows Figure 5 shown), wherein the crank arm is positioned through the bushing, and the transmission is realized through the spline fit between the crank arm and the main shaft.
[0039] Slider installation:
[0040] Install the slider on the oblong hole of the crank arm, and fix it on the crank arm through the bushing (the shape of the slider is as follows Figure 4a , Figure 4b shown).
[0041] Insulation rod installation:
[0042] Insert the insulating tie rod insert through the center hole of the slider and into the guide hole of the guide plate mounted on the side plate. During the installation process, nuts ar...
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Abstract
The invention discloses a novel high-voltage switch on-off transmission device which comprises a main shaft and an insulating pull rod. A connecting lever is arranged on the main shaft. A sliding block is arranged at the outer end of the connecting lever. The insulating pull rod is provided with an insulating pull rod insert, and threads are arranged on the insulation pull rod insert. The insulating pull rod insert penetrates through a center hole in the sliding block. Fixing nuts are arranged at the positions, on the two sides of the sliding block, of the insulating pull rod insert, spindle noses are arranged at the two ends of the sliding block respectively, oblong holes are formed in the outer end of the connecting lever, and the spindle noses are inserted into the oblong holes. The sliding block is provided with threaded holes of a high-voltage switch mechanical property detection device. A guide plate is arranged on a side plate and provided with a guide hole. The end of the insulating pull rod insert is inserted into the guide hole. According to the novel high-voltage switch on-off transmission device, the over travel adjustment structure is simplified, the over travel adjustment precision is improved, the high-voltage switch on-off capability is improved, the service life of a vacuum arc-extinguishing chamber is prolonged, and the product cost is reduced to a certain extent.
Description
technical field [0001] The invention relates to an on-off operation device of a high-voltage circuit breaker, in particular to a novel on-off transmission device of a high-voltage switch. Background technique [0002] At present, the opening and closing operation of high-voltage circuit breakers on the market is mostly realized through the reciprocating movement of the insulating pull rod driven by the crank arm on the main shaft, and the closing overtravel of the vacuum interrupter is changed by adjusting the connection between the insulating pull rod and the crank arm . However, in this transmission mode, the crank arm on the main shaft rotates, which drives the connection point between the insulating rod and the crank arm to rotate around the main shaft as the rotation axis, resulting in a non-linear motion of the insulating rod. This transmission mode makes the high-voltage circuit breaker open and close, the contact surface of the dynamic and static contacts in the vac...
Claims
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Application Information
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