Background technology
Slip ring motor a lot of occasions when operation need test the speed, and the encoder that is used to test the speed is installed on the tail end of machine shaft usually, and slip ring also is installed in roller end.For example in recent years along with the developing rapidly of green energy resource, be exactly a kind of typical slip ring motor as the MW level Wound-rotor type double-fed wind power generator of mainstream model.The Wound-rotor type double-fed wind power generator needs the rate signal of reliable and stable to obtain through encoder.The rotating shaft end of double-fed wind power generator is equipped with slip ring simultaneously, but encoder can not be directly installed in the double-fed wind power generator rotating shaft.Usually there are three reasons to cause encoder can't be directly installed on the machine shaft; The one, the rotor cable of slip ring motor is connected with slip ring through the rotating shaft axis hole, has taken the installing space of the little axle of encoder; The 2nd, machine shaft axially is processed with deep hole in the slip ring section, but the installation dimension of rotating shaft end face is limited; The 3rd, encoder is installed little axle and compared with alternator shaft, and is small-sized, can not directly install and fix, and needs transition dexterously.
Summary of the invention
The present invention is directed to the deficiency of prior art, provide a kind of simple in structure, easy installation and removal, the reliable slip ring motor of connection to use the encoder rack mounting structure.
The present invention provides following technical scheme for solving the problems of the technologies described above: a kind of slip ring motor is used the encoder rack mounting structure, comprises machine shaft, encoder; The little axle of encoder, rotor cable, machine shaft end elder generation suit steel bushing, slip ring is sleeved on outside the steel bushing again; Described rotor cable is arranged in the axial cable hole of machine shaft, it is characterized in that an end of transition bracket is fixedly mounted on the steel bushing end face, and the other end of transition bracket is fixedly connected the little axle of encoder; Encoder is installed on the little axle of encoder; Described transition bracket is made up of former and later two disks and some joint pins, and preceding disk and rear disk constitute open frame through joint pin, and preceding disk is the hollow disk body; Rotor cable in the axial cable hole of said machine shaft passes the preceding disk of transition bracket, is fixedly connected from passing between joint pin with slip ring.
Further preferred as the present invention, the preceding disk of transition bracket is through being bolted on the steel bushing end face.
As further improvement of the present invention, be respectively arranged with the seam that connects on steel bushing end face and the preceding disk end face, make encoder support and slip ring motor install more firm through this kind setting.
As further improvement of the present invention, the joint pin of transition bracket, preceding disk and rear disk are the integrative-structures of welding, are provided with easy to makely through this kind, and it is stable to be connected firmly.
As further improvement of the present invention; The little axle bolt of encoder is fixed on the rear disk of transition bracket; Through this kind setting the installation site of the little axle of encoder is increased, vacated the line position of walking of rotor cable simultaneously, make the rotor cable simple and convenient with being connected of slip ring.
As further improvement of the present invention, the end that the little axle of encoder is connected with rear disk is plate-like or support shape, and the other end that encoder is installed is circular shaft shape or multidiameter shape, selects the little shape shaft of encoder arbitrarily according to processing technology.
As further improvement of the present invention, the little axle of encoder is overall structure or divides attachment structure.
The invention has the advantages that: 1, rely on seam to cooperate and bolted, the encoder mounting bracket is simple in structure, and is solid and reliable; 2, encoder and transition bracket easy installation and removal, it is maintainable high; 3, the little shaft size of the installation of encoder does not receive the restriction of slip ring motor rotating shaft size basically; 4, the rotor cable can pass through axis hole and encoder transition bracket easily, is connected with slip ring again.
Embodiment
A kind of slip ring motor is used the encoder rack mounting structure, comprises machine shaft 2, encoder 4, little 7 of encoder, rotor cable 9; Machine shaft 2 ends elder generation suit steel bushing 3, slip ring 1 is sleeved on outside the steel bushing 3 again, and described rotor cable 9 is arranged in the axial cable hole of machine shaft 2; One end of transition bracket is fixedly mounted on steel bushing 3 end faces, and the other end of transition bracket is fixedly connected the little axle 7 of encoder, and encoder 4 is installed on the little axle 7 of encoder; Described transition bracket is made up of former and later two disks (5,6) and some joint pins 8; Preceding disk 5 constitutes open frames with rear disk 6 through joint pin 8, and preceding disk 5 is the hollow disk body, and the rotor cable 9 in the axial cable hole of said machine shaft 2 passes the preceding disk 5 of transition bracket; Pass with slip ring 1 from 8 of joint pins and to be fixedly connected; The preceding disk 5 of transition bracket is respectively arranged with the seam that connects through being bolted on steel bushing 3 end faces on steel bushing 3 end faces and preceding disk 5 end faces, and the joint pin 8 of transition bracket, preceding disk 5 and rear disk 6 are integrative-structures of welding; The little axle 7 of encoder is bolted on the rear disk 6 of transition bracket; The end that the little axle 7 of encoder is connected with rear disk 6 is plate-like or support shape, and the other end that encoder 4 is installed is circular shaft shape or multidiameter shape, and the little axle 7 of encoder is overall structure or divides attachment structure.