JPH0419921Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a pantograph type current collector that supplies power to cranes and other moving objects, so that carbon shoes can be easily replaced or the mounting position can be changed. This invention relates to a carbon shoe mounting device.

[Conventional technology]

Conventionally, power was supplied to a running body by contacting a pantograph protruding from the running body with a trolley wire stretched along the running path of the running body or a steel overhead wire, and connecting the trolley wire with the power supply wheel of the pantograph or carbon fiber. There is a method in which the shoe slides. In this case, the trolley wire is stretched at a predetermined position from the reference line due to its own weight or the like. For this reason, pantographs are link-type, for example, so that the power supply wheel or carbon shoe can always maintain contact with the contact wire with a predetermined pressing force to supply power even when the tension wire changes. There is Publication No. 35-15002.

For trolley wires and the like, rolling feed wheel systems are not suitable for large currents, so in recent years there have been systems using highly efficient carbon shoes. For example, as shown in Figure 7, a carbon shoe with a triangular cross section is used, and even if one side of the shoe wears out, the mounting position can be changed so that the other two outer surfaces are in contact with the trolley wire. This triples the lifespan of shoes.

[The problem that the idea attempts to solve]

However, this triangular carbon shoe needs to be fixed with the contact plane with the trolley wire accurately facing the trolley wire, but this is done by screwing a nut into a bolt that passes through the carbon shoe. There is. Because of the arc, the work must be done at a high place, and when tightening the nut, the shoes meet, making it difficult and time-consuming to accurately align the plane of the shoe with the trolley wire. Also, in view of the difficulty of the work, the shoe is removed from the pantograph, the shoe and shoe guide are assembled on the ground by tightening bolts, and then the worker ascends to a high place again and attaches the shoe to the pantograph. Therefore, it takes time.

The present invention was developed with the aim of quickly, easily, and accurately attaching a shoe even when working at high places.

[Means to solve the problem]

The present invention was made to achieve the above object, and includes a carbon shoe 5, an end plate 6, and a shoe shaft 4.
This is a carbon shoe attachment device for a pantograph type current collector having a shoe guide 8, and a screw 9. 5, a shoe shaft through hole 61 corresponding to the shoe shaft through hole 51 of the carbon shoe 5, and a screw hole corresponding to the screw hole 52 formed on the end surface of the carbon shoe 5. 62, the shew guide 8 has an engaging piece 81 which is bent at both ends and connected in series, and has a U-shaped cross section, and this engaging piece 81 is provided with a shaft hole 82 and a screw hole 83. is attached to the end face of the carbon shoe 5, and the carbon shoe 5 is connected to the shoe guide 8 by the shoe shaft 4.
The screw hole 83 of the shew guide 8, the screw hole 62 of the end plate 6, and the screw hole 52 of the carbon shew 5 are aligned, and the screw 9 is screwed in for positioning. The gist is that.

〔Example〕

The present invention will be explained below based on the illustrated embodiments.

In the figure, 1 is the main body of a pantograph-type current collector, which is assembled in a flexible manner using multiple links, and the pantograph is always extended with a constant pressure by a spring, so that the carbon shoe is attached to a trolley wire, etc. It is designed to be pressed into contact. Although an example of the configuration of this pantograph is illustrated, it can also be used in other configurations. A shaft 2 is horizontally suspended above the pantograph 1, and a shoe holder 3 having a carbon shoe attached to the shaft 2 is locked so as to be swingable in a seesaw manner.

This shoe holder 3 has two carbon shoes, which are arranged between both ends, and the carbon shoes are rotatably locked by fitting a small diameter portion 42 at the end of the shoe shaft penetrated by the carbon shoes. Ru.

The carbon shoe 5 has a rod shape with a triangular rice ball-shaped cross section, and has a shoe shaft through hole 51 bored in its central longitudinal axis, and three triangular planar outer surfaces 5a of the carbon shoe on both end surfaces. 5
Screw holes 52 are drilled at intermediate positions between the connecting surfaces b and 5c, respectively.

Therefore, the distance between the screw holes on the end side of this carbon shoe is set at 120 degrees. The connecting surfaces of the three planar outer surfaces 5a, 5b, and 5c form a curved arc surface 5d, which connects the outer surfaces.

Metal end plates 6, 6 are disposed on both end surfaces of the carbon shoe thus formed. The end plate 6 may also have a shape that matches the cross-sectional shape of the carbon shoe, or it may be disk-shaped, with a shoe shaft through hole 61 in the center and equidistant spaces around it that match the carbon shoe end face and screw hole pitch. A plurality of screw holes 62 are respectively drilled in the shoe, and three protrusions 63 are provided so that when the end plate is placed along the shoe end surface, it will be attracted to the planar outer surface of the shoe. By aligning the end plate, screwing a nut onto the end of the shoe shaft, and tightening the end plate, the protrusions 63, 63, 63 are engaged with the outside surface of the shoe end, allowing accurate positioning. It has the effect of preventing rotation of the end plate and shoe.

The above-mentioned show shaft 4 has screws 41 carved on both ends thereof, and the outside end has a slightly smaller diameter than the threads, and this small diameter portion 42 protrudes outward from the nut 7 to lock the show guide 8. . The shoe guide 8 is formed by bending a thin metal plate into a U-shape, and has both engaging pieces 81, 81 stacked on the outside of end plates provided at both ends of the carbon shoe. A shaft hole 82 and a screw hole 83 into which the threaded portion 41 is fitted are bored.

Therefore, when assembling the carbon shoe and end plates, the end plates 6 are applied to both end surfaces of the carbon shoe. At this time, the protrusions 63 protruding inward from the end plate engage with the outer surfaces 5a, 5b, 5c at both ends of the carbon shoe. Then, the show guide 8 is placed on the outside of this both end plates.
While overlapping the engaging pieces 81, align one screw hole of the shoe with the screw holes 52, 83 of the engaging pieces, and screw the screw 9 into this screw hole. By screwing in this screw, the mounting position of the carbon shoe can be reliably aligned.

Nuts 7, 7 are screwed onto both ends of the shoe shaft to integrate the end plate, shoe and shoe guide,
This nut screwing can be done even before screwing in the screw.

Assembled in this manner, the small diameter portion protruding outward from the nut is fitted into the carbon holder so that it can rotate freely.

In addition, when changing the mounting position due to shoe wear at high places, that is, the contact surface with the trolley wire, etc., the carbon shoe can be easily rotated by loosening the nuts 7, 7 and removing the screws. In this state, after changing the contact surface with the trolley wire, align the screw holes of the holder and the chute again and screw in the screws and screw the nuts.

[Effect of idea]

According to the present invention, the triangular rice ball-shaped carbon shoe is provided with a protrusion that engages with the outer surface of the carbon shoe for positioning, so it is possible to change the position of the contact surface of the carbon shoe with the trolley wire. It has the advantage of being reliable and improving workability at high places.

[Brief explanation of the drawing]

Figure 1 is a partially broken side view, Figure 2 is a front view, Figure 3 is a plan view, Figure 4 is a perspective view of the end plate, Figure 5 is a perspective view of the carbon shoe, and Figure 6 is a perspective view of the shoe guide. FIG. 7 is a diagram of a known example. 1 is the main body of the pantograph, 2 is the shaft, 3 is the shoe holder, 4 is the shoe shaft, 41 is the screw portion, 42 is the small diameter portion, 5 is the carbon shoe, 51 is the shoe shaft through hole, 52 is the screw hole, 5a , 5b, 5c are outer surfaces, 6 is an end plate, 61 is a shoe shaft through hole, 62 is a screw hole, 63 is a protrusion, 7 is a nut, 8 is a shoe guide, 81 is an engaging piece, 82 is a shaft hole, 83 is a Screw hole, 9
is bis.

Claims (1)

[Scope of utility model registration request] An end plate 6, a show shaft 4, a show guide 8,
This is a carbon shoe attachment device for a pantograph type current collector having screws 9, and the end plate 6 is attached to the end face of the carbon shoe 5 having a triangular rice ball cross section. It has a protrusion 63 for stopping, a shoe shaft through hole 61 corresponding to the shoe shaft through hole 51 of the carbon shoe 5, and a screw hole 62 corresponding to the screw hole 52 formed in the end surface of the carbon shoe 5, The shoe guide 8 has an engagement piece 81 which is bent at both ends and connected in series, and has a U-shaped cross section, and this engagement piece 81 is provided with a shaft hole 82 and a screw hole 83. The carbon shoe 5 is attached to the end face, and the carbon shoe 5 is pivotally supported in the shaft hole 82 of the shoe guide 8 by the shoe shaft 4, and the screw hole 83 of the shoe guide 8 and the screw hole 62 of the end plate 6 are connected to each other.
A carbon shoe mounting device for a pantograph type current collector, in which positioning is performed by aligning the screw hole 52 of the carbon shoe 5 with the screw hole 52 of the carbon shoe 5 and screwing in the screw 9.