A kind of resistor
Technical field
The present invention relates to a kind of resistor, especially a kind of resistor that is used for wind-driven generator.
Background technology
Present prior art; A kind of resistor; Comprise framework, several resistor discs, input terminal, lead-out terminal and centre cap terminal, resistor disc, middle part resistor disc and tail resistor disc headed by said resistor disc divides, first resistor disc, middle part resistor disc and the series connection of tail resistor disc; Input terminal is connected with the upper end of first resistor disc, lead-out terminal is connected with tail resistor disc upper end, the centre cap terminal is connected with the upper end of middle part resistor disc, and first resistor disc, middle part resistor disc and tail resistor disc are connected with frame fixation respectively.Existing problems are: resistor disc is obstructed, and can not extend along its length, is prone to bend.
Summary of the invention
The objective of the invention is: a kind of resistor is provided, and it can prevent effectively that resistor disc is crooked, increases the service life.
The present invention is achieved in that a kind of resistor; Comprise framework, several resistor discs, input terminal, lead-out terminal and centre cap terminal; Resistor disc, middle part resistor disc and tail resistor disc headed by said resistor disc divides, first resistor disc, middle part resistor disc and the series connection of tail resistor disc; Input terminal is connected with the upper end of first resistor disc, lead-out terminal is connected with tail resistor disc upper end, the centre cap terminal is connected with the upper end of middle part resistor disc; It is characterized in that: said framework comprises top insulation board, end insulation board and side insulation board, on end insulation board and the top insulation board several pilot holes is arranged;
There is lead the lower end of said first resistor disc and adjacent resistor disc junction, middle part, and there is lead the junction of adjacent resistor disc top and bottom, middle part, and lead is arranged at the bottom of tail resistor disc and adjacent resistor disc junction, middle part; The lead of the upper end of resistor disc junction, adjacent two middle parts passes pilot hole and is fixedly connected with the centre cap terminal;
Lead and pilot hole are slidingly matched; One screw rod is fixedly connected with first resistor disc, middle part resistor disc and tail resistor disc and insulate.
Described a kind of resistor, its special character is: also comprise insulating case and insulator cap,
The location hole that perforation is arranged on said first resistor disc, middle part resistor disc and the tail resistor disc,
Said insulating case is made up of pad portion and head, and there is counterbore in pad portion, and the bar hole that connects head is arranged in the counterbore, and head and counterbore are chimeric;
Insulating case is separately positioned on first resistor disc, middle part resistor disc and the tail resistor disc; It is chimeric that the head of the insulating case on the tail resistor disc passes the counterbore of location hole and the insulating case on the resistor disc of middle part on the tail resistor disc, the head of the insulating case on adjacent two middle part resistor discs with another in the middle part of the counterbore of insulating case on the resistor disc chimeric; The head of the insulating case on the first resistor disc passes behind the location hole chimeric with the counterbore of insulator cap.
The head of screw rod embeds in the counterbore of the insulating case on the tail resistor disc, and bar portion is stretched out with nut by insulator cap and cooperates.
Described a kind of resistor, its spy be in: said screw rod has two, said screw rod lay respectively at resistor disc from bottom to top, 1/3rd places of the length of resistor disc from top to bottom.
Described a kind of resistor, its special character is: said side insulation board comprises upper insulation plate and metal frame,
The top board that the fixing hole that input terminal, lead-out terminal are arranged on the upper insulation plate, bolt pass top insulation board and metal frame cooperates with nut, and the base plate that another bolt passes end insulation board and metal frame cooperates with nut.
A kind of resistor of the present invention, owing to adopt such structure, when the resistor disc expanded by heating extended, non-resistance can extend to end insulation board direction, can prevent resistor disc flexural deformation effectively, prevented two adjacent resistor disc contacts, had eliminated potential safety hazard.
Description of drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the B-B view of Fig. 1.
Fig. 4 is the front view of the present invention middle part resistor disc.
Fig. 5 is the left view of the present invention middle part resistor disc.
Fig. 6 is the front view of first resistor disc of the present invention and tail resistor disc.
Fig. 7 is the cutaway view of insulating case of the present invention.
Fig. 8 is the cutaway view of insulating case of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
As shown in Figure 1; A kind of resistor comprises framework, several resistor discs, input terminal 1, lead-out terminal 2 and centre cap terminal 3; Resistor disc 4, middle part resistor disc 5 and tail resistor disc 6 headed by said resistor disc divides, first resistor disc 4, middle part resistor disc 5 and 6 series connection of tail resistor disc; Input terminal 1 is connected with the upper end of first resistor disc 4, lead-out terminal 2 is connected with tail resistor disc 6 upper ends, centre cap terminal 3 is connected with the upper end of middle part resistor disc 5;
Like Fig. 4, Fig. 5, shown in Figure 6, the lower end of first resistor disc 4 is fixedly connected with the lower end of middle part resistor disc 5, and there is lead 7 lower end of junction; There is connecting portion 8 lower end of first resistor disc 4, and there is half lead 81 lower end of connecting portion; There is connecting portion 8 top and bottom of middle part resistor disc 5, and half lead 81 is arranged on the connecting portion 8, and half lead 81 on the first resistor disc 4 constitutes lead 7 with half lead on the middle part resistor disc 5;
Being the mirror image face with resistor disc 5 parallel planes, adjacent two middle parts, adjacent two middle part resistor disc 5 mirror image settings, the lower end of adjacent two middle part resistor discs 5 is fixedly connected, and there is lead the lower end of junction; The upper end of adjacent two middle part resistor discs 5 is fixedly connected, and there is lead 7 upper end of junction; Adjacent two middle part resistor discs, 5 first leads 81 constitute lead 7;
The lower end of said tail resistor disc 6 lower ends and adjacent middle part resistor disc 5 is solidly connected, and lead 7 is arranged at the bottom of junction; Half lead 81 on the tail resistor disc 6 constitutes lead 7 with half lead on the middle part resistor disc 5;
Said framework comprises top insulation board 91, end insulation board 92 and side insulation board 93, on end insulation board 93 and the top insulation board 91 several pilot holes is arranged;
The pilot hole that the lead 7 of the upper end of resistor disc 6 junctions, adjacent two middle parts passes top insulation board 91 is fixedly connected with centre cap terminal 3; The centre cap terminal is fixedly connected with top insulation board 91;
As shown in Figure 3, lead 7 is slidingly matched with pilot hole; One screw rod 10 and first resistor disc 4, middle part resistor disc 5 is fixedly connected with tail resistor disc 6 and insulate.
Also comprise insulating case 11 and insulator cap 12,
The location hole that perforation is arranged on said first resistor disc 4, middle part resistor disc 5 and the tail resistor disc 6,
As shown in Figure 7, said insulating case 11 is made up of with head 112 pad portion 111, and there is counterbore 1111 in pad portion 111, and the bar hole that connects head 112 is arranged in the counterbore 1111, and head 112 is chimeric with counterbore 1111; As shown in Figure 8, counterbore and bar hole are arranged on the said insulator cap 12.
Insulating case 11 is separately positioned on first resistor disc 4, middle part resistor disc 5 and the tail resistor disc 6; It is chimeric that the head 112 of the insulating case 11 on the tail resistor disc 6 passes the counterbore 1111 of location hole and the insulating case 11 on the middle part resistor disc 6 on the tail resistor disc 6, and the counterbore 1111 of the insulating case 11 on the head 112 of the insulating case 11 on adjacent two middle part resistor discs 6 and another middle part resistor disc 6 is chimeric; The head 112 of the insulating case 11 on the first resistor disc 4 passes behind the location hole chimeric with the counterbore of insulator cap 12.
The head of screw rod 10 embeds in the counterbore of the insulating case 11 on the tail resistor disc 6, and bar portion is stretched out with nut by insulator cap 12 and cooperates.The pad portion 111 of insulating case 11 is between first resistor disc and middle part resistor disc, and the pad portion 111 of insulating case 11 is between adjacent two middle part resistor discs 5, and the pad portion 111 of insulating case 11 is between tail resistor disc 6 and middle part resistor disc 5.
Said screw rod 10 has two, said screw rod 10 lay respectively at resistor disc from bottom to top, 1/3rd places of the length of resistor disc from top to bottom.
As shown in Figure 2, said side insulation board 93 comprises upper insulation plate 931 and metal frame 932,
As shown in Figure 2, the top board that has the fixing hole of lead-out terminal 2, bolt to pass top insulation board 91 and metal frame 932 on the upper insulation plate 931 cooperates with nut, and the base plate that another bolt passes end insulation board 92 and metal frame 932 cooperates with nut.
On the upper insulation plate 931 of the side insulation board 93 on the left of input terminal 1 is arranged on.
Above-described only is preferential execution mode of the present invention.Should be pointed out that for the person of ordinary skill of the art under the situation that does not break away from the principle of the invention, can also make some improvement and modification, this also is regarded as protection scope of the present invention.