Cable connecting terminal and processing method thereof
Technical field
The present invention relates to a kind of cable connecting terminal, be mainly used in field of electrical equipment.
Background technology
It is must obligato equipment part that the cable of power equipment connects, when connection under current state, the requirement that cable connects more is increased, such as, in power equipment, need to connect power capacitor, power capacitor can be divided into transposition capacitor, series capacitor, capacitor for electric induction heating system, coupling capacitor, pulse capacitor, direct current capacitor, stopping capacitor, filtering capacitor, protective capacitor and standard capacitor etc. by purposes.Shunt capacitor is used for power equipment and system to improve power factor (PF); Series capacitor is connected in power transmission line or electrical network in order to compensate the induction reactance of transmission line; Different capacitor devices is selected in different places, each capacitor device has tens groups of capacitors to hundreds of group to be connected by the connection in series-parallel of copper core insulation flexible cable, every root copper core insulation flexible cable length is different according to designing requirement, width in every root copper core insulation flexible cable between fixing cord wire clamp is not identical according to designing requirement yet, and what electric current was large can more than 300A.In prior art, as shown in Figure 1, connection between two cables is clamped by wire clamp 1 and connects, and this wire clamp 1 has a fixing hole 11, and fluctuating plate shape is identical, two end band bent angles, during installation, the two ends of fluctuating plate encircle cable 3, and fixing hole 11 penetrates screw nut clip and fastens and draw as electrode, when using sheath 2, the sheath 2 at wire clamp 1 place is peelled off.When adopting this structure, be fixedly clamped by screw-nut, cable 3 is compacted, due to cable 3 non-rigid structure, along with the prolongation of time, at wind-force, under the impact of height temperature Change etc., can progressively be out of shape, contact resistance can increase, because electric current is very large, larger pressure drop can be produced, serious meeting is burnt, blackout, in order to solve this technical problem, power worker needs timed maintenance, tighten screw-nut further, because a lot of electric tower is positioned at field, wilderness, tower height great distance, maintenance cost is very high, for this reason, Chinese patent discloses, CN201310419203.X, the punching die of cable extraction electrode and this cable extraction electrode and processing method, although, this patent is improved cable extraction electrode, but processed complex, especially the processing method that metal sleeve turns an angle pressing convex tendon together with cable seems heavy, inconvenient, in addition, from cable to extraction electrode, again from extraction electrode to wire clamp, contact resistance can increase to some extent.
Summary of the invention
The present invention, according to above deficiency, provides a kind of cable connecting terminal, cable is directly extruded aftercrimp in tagblock, not only simplify technique, reduce contact resistance, also add reliability, reduce cost, really reach non-maintaining effect.
Technical scheme of the present invention is:
A kind of cable connecting terminal, is characterized in that, comprising:
Tagblock, the center of this tagblock offers through hole, and the two ends of this tagblock offer the cable clamping interface that can embed cable, and the card line entrance minimum widith L of cable clamping interface is less than the Breadth Maximum D of cable clamping interface;
Card line plate, presses cable and is fixed in cable clamping interface, and the width M of card line plate is greater than the minimum widith L of card line entrance.
Tagblock of the present invention is integrated manufacture, closes up completely different from two panels of the prior art, and obviously, integrally manufactured intensity is obviously better than the intensity that two panels is closed up, under the prerequisite of same intensity, integrally manufactured material will significantly than two panels close up few.
The shape of cable clamping interface can have multiple, or the combination of various shape, shape due to cable is circular, in cable clamping interface shape, circle is preferred, consider that card line plate will compress cable, the shape of pressing section can be rectangle or other shape, can consider combination that is circular and rectangle on the whole.
The through hole of tagblock is fixed by screw, bolt and is electrically connected on other binding post of power equipment.
The area of the cable that described cable clamping interface, described card line plate surround is less than the area of tagblock dispatch from foreign news agency cable.
Press cable and can reduce contact resistance, but cable is twisted together by many single lines, between must have space, in extrusion process, need to reduce this space, space is fewer, and reliability is higher, and contact resistance is less, and the life-span is longer.
Integrally manufactured tagblock and the cable of compression form rigid structure, can not be out of shape, and contact resistance can not become large along with the increase of time.
The thickness of card line plate, is as the criterion can not be out of shape after compressing cable.
One of preferably, described card line entrance is rectangular or tubaeform.Cable clamping interface near described card line entrance is provided with plane.Utilize this plane, card line plate can seal cable more securely.
R angle is had between described card line entrance and described plane.Utilize this R angle, card line plate easily inserts in cable clamping interface.
One of preferably, described cable clamping interface is C font.Program material is comparatively economized.
A processing method for cable connecting terminal, comprises the steps:
A. process described tagblock, form described through hole and described cable clamping interface, the card line entrance minimum widith L meeting cable clamping interface is less than the Breadth Maximum D of cable clamping interface;
B. described cable is flattened to inserting cable clamping interface, the width M of described card line plate is bent to and is less than card line entrance;
C. card line plate is close to cable, with briquetting extruding card line plate and cable, cable is extruded aftercrimp, and card line plate is stuck in cable clamping interface after stretching.
In described step B, by cable flatten comprise, in advance with instrument flatten or round electric cabled yarn by being crushed time tubaeform.Because briquetting has two pieces, can extrude simultaneously or first extrude a piece wherein, then extrude other one piece.
In described step C, briquetting is arranged on punch press, press or Manual hydraulic grip.
The present invention has that structure is simple, cost is low, easy to process, contact resistance is little, electric performance stablity, non-maintaining, the beneficial effect of saving material.
Accompanying drawing explanation
Fig. 1 is the structural representation that in prior art, cable and wire clamp are installed.
Fig. 2 is the structural representation of cable connecting terminal of the present invention.
Fig. 3 is the end view of Fig. 2, is embodiment 1.
Fig. 4 is the end view of Fig. 2, is embodiment 2.
Fig. 5 is the end view of Fig. 2, is embodiment 3.
Fig. 6 is the processing method structural representation coordinating embodiment 1.
Fig. 7 is the processing method structural representation coordinating embodiment 3.
Embodiment
Now the present invention is further illustrated by reference to the accompanying drawings:
As shown in the figure, a kind of cable connecting terminal, comprising:
Tagblock 4, the center of this tagblock 4 offers through hole 41, and the two ends of this tagblock 4 offer the cable clamping interface 42 that can embed cable 3, and the card line entrance 43 minimum widith L of cable clamping interface 42 is less than the Breadth Maximum D of cable clamping interface 42;
Card line plate 5, presses cable 3 and is fixed in cable clamping interface 42, and the width M of card line plate 5 is greater than the minimum widith L of card line entrance 43.
The area of the cable 3 that cable clamping interface 42, card line plate 5 surround is less than the area of tagblock 4 dispatch from foreign news agency cable 3.
Card line entrance 43 rectangular (as shown in Figure 3) or tubaeform 431 (as shown in Figure 4).Cable clamping interface 42 near card line entrance 43 is provided with plane 44.
R angle is had between card line entrance 43 and plane 44.
Cable clamping interface 42 can also be C font (as shown in Figure 5).
The part that cable 3 is not embedded into cable clamping interface 42 can have sheath 2.
A processing method for cable connecting terminal, comprises the steps:
A. process tagblock 4, form through hole 41 and cable clamping interface 42, the card line entrance 43 width L meeting cable clamping interface 42 is less than the Breadth Maximum D of cable clamping interface 42;
B. flattened by cable 3 to inserting cable clamping interface 42, be bent to by the width M of card line plate 5 and be less than card line entrance 43, card line plate 5 bendable is converted into arc-shaped;
C. card line plate 5 is close to cable 3, card line plate 5 and cable 3 is extruded with briquetting 6, cable 3 is extruded deflation, card line plate 5 is stuck in cable clamping interface 42 after stretching, shape after card line plate 5 in Fig. 3, Fig. 4 stretches is close to straight line, be straight line in the middle of shape after card line plate 5 in Fig. 5 stretches, two ends are arc-shaped.
In step B, by cable 3 flatten comprise, in advance with instrument flatten or round electric cabled yarn 3 by tubaeform 431 time be crushed.
In step C, briquetting 6 is arranged on punch press, press or Manual hydraulic grip.