Universal low-voltage circuit breaker with main shaft separated from operating mechanism
A low-voltage circuit breaker and operating mechanism technology, applied in the protection switch operation/release mechanism, circuit, and protection switch components, etc. Maintenance and replacement, improving service life, and facilitating the effect of manipulating the body of the mechanism
Active Publication Date: 2020-02-21
SHANGHAI ELECTRICGROUP CORP
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AI Technical Summary
Problems solved by technology
When the circuit breaker opens and closes, the outward force of the main shaft acts on the side plate, which will cause deformation or even destruction of the side plate, resulting in the failure of the overall function of the operating mechanism, and the deformed side plate will cause the main shaft to be skewed, resulting in various failures after closing. The phase contact resistance is different, which affects its electrical service life
Method used
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Embodiment Construction
[0010] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.
[0011] The invention is a universal low-voltage circuit breaker with a main shaft separated from the operating mechanism, as shown in the attached Figure 1-3 As shown, it includes the main shaft 3, the operating mechanism body 10 and the bakelite part 1. The main shaft 3 and the operating mechanism body 10 are respectively installed on the bakelite part 1. The main shaft 3 is connected with the bakelite part 1 through three sets of bearings and the bearing seat 5. The ends are respectively provided with hoops 9, the hoops 9 clamp the two ends of the main shaft 3 and connect with the bakelite part 1, the main shaft 3 is welded with the swing arm 4; the opening spring shaft 8 on the operating mechanism body 10 passes through the swing arm 4 The shaft hole connects the main shaft 3 and the operating mechanism body 10 together, the o...
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The invention discloses a universal low-voltage circuit breaker with a main shaft separated from an operating mechanism. The universal low-voltage circuit breaker comprises a main shaft, a control mechanism body and a bakelite piece, and is characterized in that the main shaft and the control mechanism body are both arranged on the bakelite piece; the main shaft is connected with the bakelite piece through a bearing and a bearing base; a swing arm is arranged on the main shaft; a disconnecting spring shaft on the control mechanism body penetrates through a shaft hole in the swing arm to connect the main shaft with the control mechanism body; an disconnecting spring shaft sleeve is arranged outside the disconnecting spring shaft; the disconnecting spring shaft sleeve is slightly shorter than the disconnecting spring shaft; one end of an disconnecting spring is connected with the disconnecting spring shaft sleeve, and the other end of the disconnecting spring is connected with a second shaft on the control mechanism body; the control mechanism body is connected with the bakelite piece through a side plate; and a notch is formed in the side, connected with the bakelite piece, of the side plate so as to avoid interference with the main shaft. The main shaft is independently installed on the bakelite piece and is separated from the side plate of the operating mechanism body, so thatthe service life of the universal low-voltage circuit breaker is prolonged, and meanwhile, the operating mechanism body is convenient to maintain and replace.
Description
technical field [0001] The invention belongs to the technical field of low-voltage circuit breakers, and in particular relates to a universal low-voltage circuit breaker in which a main shaft is separated from an operating mechanism and the main shaft is fixed on a bakelite piece. Background technique [0002] The main shaft of the current universal low-voltage circuit breaker is assembled with the main body of the operating mechanism, and the main shaft is installed on the side plate of the main body of the operating mechanism through a bush or bearing. Such a structure is a great load on the side plate of the main body of the operating mechanism. , and the side plate plays an important role in the performance of the operating mechanism body of the universal low-voltage circuit breaker. When the circuit breaker opens and closes, the outward force of the main shaft acts on the side plate, which will cause deformation or even destruction of the side plate, resulting in the fa...
Claims
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IPC IPC(8): H01H71/10H01H71/02
CPCH01H71/10H01H71/0207
Inventor 程少勇付志超过孝刚
Owner SHANGHAI ELECTRICGROUP CORP