CN-121984269-A - Rigid point structure of generator

CN121984269ACN 121984269 ACN121984269 ACN 121984269ACN-121984269-A

Abstract

The invention discloses a rigid point structure of a generator, and relates to the technical field of generator components. Aiming at the problems that the single multi-material connecting point of the existing regulator is easy to cause fastening torque attenuation and poor contact due to the difference of thermal expansion coefficients, the structure maintains the original functional connecting point, the SPCC conductive sampling terminal is newly added to be directly and rigidly connected with the positive plate, the side edge of the SPCC conductive sampling terminal extends out of a metal extension part with a connecting ring, and forms metal-metal connection without intermediate heterogeneous materials with the positive plate through a fastening bolt, so that the structure mainly bears the conductive function and assists in collecting voltage signals, and is electrically connected with the regulator to form an independent passage. The invention fundamentally avoids moment attenuation, improves the working reliability of the generator by adopting a double-path redundancy design, has strong compatibility, low implementation cost and excellent conductivity and signal acquisition stability, and effectively solves the defects of the prior art.

Inventors

ZHANG WEIXUAN
FENG SHU
CHEN JIAN
GAO LEI
DENG YANG
ZHOU TONG

Assignees

宁国金鑫电机股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260105

Claims (6)

1. The generator rigid point structure is characterized by comprising a brush end cover body (1), a positive plate (101), a regulator (2) detachably arranged at a fixed position of the brush end cover body (1), a rectifier bridge assembly (102), an SPCC conductive sampling terminal (202) and a fastening bolt; The rectifier bridge component (102) is used for converting alternating current of the generator into direct current, and the regulator (2) is matched with the positive plate (101) and the rectifier bridge component (102) through an original functional connection point (201) containing aluminum, steel and multilayer plastic to realize voltage regulation and collect a voltage signal of a B+ end of the generator; The SPCC conductive sampling terminal (202) is a metal piece with a connecting ring extending out of the side edge, and is made of metal material with the positive plate (101), the fastening bolt passes through the connecting ring and is directly fixed on the positive plate (101), so that direct rigid fixed connection without intermediate heterogeneous materials is formed, and the SPCC conductive sampling terminal is used for conducting electricity and assisting in collecting a B+ terminal voltage signal of the generator; the SPCC conductive sampling terminal (202) is electrically connected with the regulator (2) to form an independent conductive path, and the SPCC conductive sampling terminal is matched with the original functional connection point (201) to ensure the stable operation of the generator.
2. The generator rigid point structure according to claim 1, characterized in that the contact surface of the connection ring of the SPCC sampling terminal with the positive plate (101) is provided with a metal plating layer, which is a tin plating layer.
3. The generator rigid point structure according to claim 1, characterized in that the fastening bolt is a stainless steel bolt, and the screw thread specification of the fastening bolt is adapted to the screw hole of the positive plate (101), the aperture of the SPCC sampling terminal connection ring.
4. The generator rigid point structure according to claim 1, wherein the side edge of the SPCC conductive sampling terminal (202) extends in a direction and a position, so that the SPCC conductive sampling terminal does not interfere with the rectifier bridge assembly (102), the regulator (2) and the original functional connection point (201) on the brush end cover body (1), and a fastening operation area of the fastening bolt is free from component shielding.
5. The generator rigid point structure according to claim 1, wherein the regulator (2) of the original functional connection point (201) is a protrusion with a through hole, detachable connection is realized between the regulator and the multi-material component and between the regulator and the positive plate (101) through bolts, and the connecting ring of the SPCC conductive sampling terminal (202) which is newly added and rigidly connected is independently arranged with the protrusion, so that the connection of the two bolts is not interfered with each other.
6. The generator rigid point structure according to claim 1, wherein the assembling positions of the rectifier bridge assembly (102), the positive plate (101) and the regulator (2) are fixed, and the arrangement of the SPCC conductive sampling terminal (202) does not affect the ac-dc conversion function of the rectifier bridge assembly (102).

Description

Rigid point structure of generator Technical Field The invention relates to the technical field of generator brush end cover connection structures, in particular to a generator rigid point structure. Background The brush end cover is one of the core components of the generator and mainly bears the functions of supporting key components such as a rectifier bridge component, a regulator and the like, and meanwhile, the electric connection stability among the components is required to be ensured. In the prior art, the regulator works with the positive plate and the rectifier bridge component through a single connecting point, and the connecting point realizes the voltage regulation control function of the generator by collecting the voltage signal of the B+ terminal. Because of the assembly space limitation of the brush end cover, the single connecting point, namely the original functional connecting point, needs to be in butt joint with parts made of various materials such as aluminum, steel, multilayer plastic and the like to realize fastening. However, the difference in thermal expansion coefficients of different materials is significant, namely, the thermal expansion coefficient of plastics is about 100-200 multiplied by 10- 6/DEG C, which is far greater than that of metals (aluminum: 23 multiplied by 10- 6/DEG C, steel: 11 multiplied by 10- 6/DEG C). In the working process of the generator, the periodic change of the ambient temperature can lead to inconsistent deformation amplitude of each material part, and further the fastening moment attenuation of the connecting point is caused, so that the problem of poor contact of the sampling circuit is caused. The problem directly causes that the regulator cannot accurately collect the voltage signal of the B+ end, and finally causes the voltage regulation failure and even the shutdown of the generator, thereby seriously affecting the working reliability of the generator. In the prior art, no effective solution to the problem of poor contact caused by the thermal expansion difference of the multi-material connection points has been proposed, so that a connection structure capable of eliminating the influence of torque attenuation through structural optimization on the basis of maintaining the original functions is needed. Disclosure of Invention In order to solve the technical problems in the background technology, the invention provides a rigid point structure of a generator. The invention provides a generator rigid point structure, which comprises an electric brush end cover body, a positive plate, a regulator, a rectifier bridge component, an SPCC conductive sampling terminal and a fastening bolt, wherein the regulator is detachably arranged at a fixed position of the electric brush end cover body; the rectifier bridge component is used for converting alternating current of the generator into direct current, and the regulator is matched with the positive plate and the rectifier bridge component through original functional connection points containing aluminum, steel and multilayer plastic to realize voltage regulation and collect a voltage signal of a B+ end of the generator; The SPCC conductive sampling terminal is a metal piece with a connecting ring extending out of the side edge, and is made of metal material with the positive plate, the fastening bolt penetrates through the connecting ring and is directly fixed on the positive plate, so that direct rigid fixed connection without intermediate heterogeneous materials is formed, and the SPCC conductive sampling terminal is used for conducting electricity and assisting in collecting a voltage signal of the B+ end of the generator; The SPCC conductive sampling terminal is electrically connected with the regulator to form an independent conductive path, and the SPCC conductive sampling terminal is matched with the original functional connection point to ensure the stable operation of the generator. Preferably, a contact surface of the connecting ring of the SPCC sampling terminal and the positive plate is provided with a metal plating layer, and the metal plating layer is a tin plating layer. Preferably, the fastening bolt is a stainless steel bolt, and the screw thread specification of the fastening bolt is matched with the screw hole of the positive plate and the aperture of the SPCC sampling terminal connecting ring. Preferably, the side edge of the SPCC conductive sampling terminal extends out of the direction and the position, so that the SPCC conductive sampling terminal does not interfere with a rectifier bridge assembly, an adjustor and an original functional connection point on the brush end cover body, and a fastening operation area of the fastening bolt is free of component shielding. The SPCC conductive sampling terminal connecting ring and the protruding structure are independently arranged, and the bolt connection of the SPCC conductive sampling terminal connecting ring and the protruding structu