JPS58145531A - Connecting metal fixture of trolley wire - Google Patents

Abstract

PURPOSE:To quickly and surely connect trolley wires by one touch operation, by holding the trolley wires through spring tension with eccentric cams in a connecting metal fixture main unit and swivelling the cams easily in the direction of inserting the trolley wires. CONSTITUTION:When trolley wires T1, T2 are connected, firstly each end part of the wire is curved to a prescribed angle, then the wire is inserted from an insertion hole 13. Here a cam 9 is pressed by action of a spring 11 to the side, however the cam 9 is internally swivelled against the spring 11 by insertion of the trolley wire, and a horizontal upper end surface of the trolley wire is adapted to an upper side of the hole 13, then a bottom surface of the trolley wire is placed in a level equal to the bottom surface of a connector plate 6. In this way, the wires and connected, and then if required tension is applied, the wires T1, T2 are applied with force tending to mutually fall off from a connecting metal fixture C, however the cam 9 with a saw tooth shape 9a and eccentricity presses the trolley wire to an inner end side 4 by strong force added with a part of wire tension to the spring tension to firmly hold the wire.

Description

[Detailed Description of the Invention] The present invention relates to a connection fitting for trolley IM for cranes, single-lane vehicles, etc. The purpose of this invention is to simplify work at high places and quickly and firmly connect L/F. That is.

Traditionally, trolley wires for cranes are stretched under high tension.
In addition, when the crane travels a long distance, one trolley line is too long, so two or more trolleys*1 are currently used. Therefore, the connection of the trolley wire must be made firmly and must be done at a high place, which makes the work difficult. Conventionally, when connecting such trolley wires, the ends of the trolley wires to be connected are opposed to each other, and the tips are slightly bent and a set screw attached to a connecting fitting is tightened to integrate them. For this reason, tightening the screw at a high place makes work difficult, and also has the disadvantage that if the screw is not tightened to the set torque, the trolley wire will separate from the fitting due to its tension. Furthermore, steps are formed at the joints of the trolley wires, which often result in poor contact with the contact-resistant current collector, making reliable power supply impossible.

In view of this, the present invention was made with the aim of quickly and reliably connecting the trolley wire with one touch.

The present invention will be described below based on embodiments shown in the drawings.

In Figure KM, Tl, 〒2 shows trolley wires to be connected to each other on the same axis, and C shows a connecting fitting for the trolley wires.

This connection fitting oFi main body 1! are arranged opposite to each other and integrated with fixing screws 8, but this main body 1. The proverb is: Opposing trolleys 1iT1.

72f In order to make an electrically conductive connection, it is made of a long metal or alloy that can withstand the tension of the trolley wire and is conductive.

Trolley #T1゜T inside the main body l/fi! A cavity 5tl- is formed through which the entire end of the trolley wire is inserted, and into which a cam etc. for holding the end of the trolley wire is inserted. It is made to have a predetermined inclination angle α, and a protruding engaging piece 6) is provided at the bottom. The main body 2, which is also shaped like the main body 2, is also formed with a hollow sy-end inner surface 4 having an inclination angle α in the same manner as the main body 1, but this main body 2 is not provided with the engagement piece 6. The connecting plate 6' of the main body 1 is placed along the connecting plate 6' from the main body 2, and the connecting plate 6 and the engaging piece are integrated with portoma, but when the connecting plate 6 is fixed, The joint plate is connected to the trolley wire T1.'I
The L1 trolley has a shape that fits the desired curved surface.

T! The current collector is made to slide smoothly along the trolley wire L1 in which the lower surface of the connecting plate is flush with the lower surface of the connecting plate.

The opposing bodies 1 and 2 are fastened together with a plurality of poles 8 to form a connecting fitting C. A cam 11 is movably provided within the inner height of the main body formed in a hollow space, facing the inner side surface 4.4 at each end. The eccentric cam 9 and the L1 shaft 10 are used to swing freely between the main body 1.2 and prevent the contacting surface of the cam 9 with the trolley wire 1 or 2 from being pulled out so that the trolley wire can be strongly clamped. It is formed into an uneven or serrated shape in the direction. And these two opposing cams9.9
In between is a spring ttl axis l! Provided between the main body 1 and 2 through a meeting,
The spring pressure of the cams 9 is used to press the cams 9 against the inner surfaces of the opposing ends, thereby completely holding the ends of the trolley wire inserted into the main body t1g.

Main body 1. ! A trolley wire is attached to one end surface of the lower part of the main body 1.2 so that when the tl-joint is made, the trolley cannon in the internal cavity of the main body 1.2 can be inserted into the end t'' of the thread with the end bent at an angle α from a horizontal position. An insertion point 7tS is provided, so that the bending at the angle WLa at a predetermined length position from the edge of the end - L so that it can be inserted.

In addition, the main body 1. ! The central portion 4C1 or two or more insulators Gf are provided, and the ribs are provided protruding from the lower part of the insulators, and the fclll attachment pieces are inserted into the cavity of the main body to support them. In addition, a split bottle or C is attached to the end of the shafts to and tz to prevent removal.
A shaped pin may also be provided.

Then, using the connecting fittings configured as described above, the facing Toro') -1! When connecting T 1 , 71 in a straight line, each trolley wire T 1 . Te! Bend the end at a predetermined angle α. Although not shown here, the bending process can be easily and accurately performed using a special tool tube. The bending direction should be directed upward from the end of the trolley wire.

Next, the end of this trolley wire is inserted into the inner height than its insertion, or at this time, the cam 9 is pressed toward the inner side of the end by the action of the upper end side and the spring 11 so that the end is smaller than the narrow diameter of the trolley. is pushed inward to the cam 96 against the spring pressure by the insertion pressure of the end of the trolley wire, and swings. Then, the upper end surface of the horizontal portion of the trolley wire is brought into precise contact with the upper surface of the insertion hole 11 at a predetermined position, and the lower surface of the trolley and the downward direction of the connecting plate are flush with each other. In this case, the cam book swings when the end of the trolley wire is inserted, that is, it is pressed in the direction against the spring pressure and swings, but the uneven surface 11 of the cam 9 is pressed against the trolley wire surface by the ferrule pressure. has been done. When using only spring pressure, the clamping force of the trolley wire cam is not very large, LTh.
L) Lolly wire 71. If you connect 2 connections and apply the required tension to them, you will get a trolley trout T l.

Tlri tries to pull out from the K11i connecting fittings. Due to this force, the cam is pressed by the spring, and due to its uneven surface and eccentricity, a part of the tension applied to the trolley IJ-i$1 is added to the spring pressure, causing a tremendous force to be applied to the trolley +11.
is pressed against the inner surface of the end and is firmly clamped.

Insert a nail, wire, etc. from the connecting fitting to the connected trolley, hook it to the 17tsb drilled in the cam 9, and rotate the cam so that the nail, etc. is bent by the spring tty. The cam can completely release the grip, so it can be easily removed.

According to the present invention, the cam can be easily swung in the direction of insertion of the trolley wire by clamping the trolley → I with the eccentric cam t#i pressure inside the main body of the connecting fitting. Therefore, the thin end of the trolley bent at the required angle can be firmly supported by simply inserting it into the i-connection fitting, and work at heights can be done easily and quickly without the use of tools, and the trolley wire has strong tension. Even if you give it to the tube, some of the tension will melt! Since the trolley clamping force is converted into a clamping force and increases in proportion to the tension, it has the advantage of being able to prevent the trolley from slipping out.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view, Fig. 2 fJX-X line,
FIG. 8 is a cross-sectional view of Y-Y@, line 4, Hz-2Im. Tl, Tl1, ) Loli - possession C6
0, connection fitting Goo, insulator 1-2.6 main body 306. Cavity 406. End inner surface 01. Engagement piece 601. Joint plate 711. Bolt 810. Solid foot screw 900. Cam SiB6. , serrate 1O08, axis 11,,,ijne1! ,, -axis 111 , - , )Rollie wire insertion hole patent applicant: 1 person outside of Shinko Electric Co., Ltd.

Claims (1)

[Claims] The two main bodies are arranged opposite each other, a cavity is formed inside them, and spring pressure is applied to the inside of the air conditioner.
A cam is provided eccentrically and swingably, and a joint is provided at the bottom of the main body to connect the opposing trolley wires in a flush manner. A connecting fitting for a trolley wire, characterized in that the clamping force of the cam is increased by 1 by utilizing the tension of the trolley wire relative to the tube.