DE645101C - Hook clamp with changeable clamp jaw and removable insulating rod - Google Patents

Description

Patented in German

In the case of a known grounding and short-circuit terminal, the connection contact is off two mutually adjustable metal band springs formed, which for receiving different Curved cross-sections and provided with a file-like roughening to rub the conductor bare are. However, the wave-like design of the clamping legs does not guarantee sufficient large contact areas; there is also the risk that the conductor will rub the bare is injured by the file-like roughening.

In the subject matter of the invention, these disadvantages are avoided. The contact legs are formed by two opposing, strong, but highly elastic bronze springs, which in a hook-shaped protective housing, the legs of which are U-shaped transverse

jo cut, arranged, and those Ends are pivotable on the one hand around a bolt, on the other hand freely on the inner web wall Sliding through the spring towards the center of the hook. The bent-back pivotable ends form an acute-angled, expandable one Maul, which inevitably adjusts itself to every ladder, whereby when inserting the The conductor is cleaned of dirt and oxide from a part of its surrounding surface without damaging the same

Damage ho. Because the contact parts have notches do not have, the hook clamp can be at any angle to the conductor axis be raised.

In the drawing, an embodiment of the subject matter of the invention is illustrated, namely shows

Fig. Ι the hook housing with the contact springs in the starting position,

Fig. 2 the position of the contact springs in the limit position with the conductor inserted, Fig. 3 the inside of the housing with the bronze springs in the various phases of insertion of the head and

Fig. 4 is a side view of the hook clamp.

In a hook-shaped hollow body 1, the legs of which have a U-shaped cross-section,

June 14, 1932

Opposite leaf springs 2 are arranged, their bent back by about i8o ° Ends are on the one hand attached to the clamp 3 pivotably about the bolts 4, on the other hand be pushed on the inner web wall sliding towards the center of the hook. As shown in Fig. 1 As can be seen, the leaf springs 2 form a mouth 5, which in the starting position in a longer contact joint runs out.

If a conductor is now pushed into the mouth 5 as shown in FIG. 3, the leaf springs 2 'are first spread apart so that the wedge-shaped contact joint that is created thereby forms the continuation of the mouth 5. When the conductor penetrates further up to the inner hook curve, the springs 2 are now also pressed apart there, the mouth 5 closing again at the point of introduction. The conductor is scoured bare. Since the springs 2 nestle against the conductor, good surface contact is achieved. The flexible arrangement of the springs at points 4 prevents the spring force from decreasing. The hook clamp according to the invention can be used with equal success both for the round conductor and for flat conductors of any cross-section.

Claims (1)

Claim: Hook clamp with variable clamp jaws and removable insulating rod for grounding and short-circuiting as well as for drawing current from high-voltage overhead lines, characterized by two leaf springs resting against one another in the rest position with ends bent back by about 180 °, one of which ends below Formation of a tapering clamp mouth on the thighs of one ' Hook bent terminal housing of U-shaped cross-section are hinged, and the other ends are supported against the inner web wall of the terminal housing. 1 sheet of drawings