JPS5939763Y2 - Duct type trolley current collector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a current collector device in which the current collector of a duct type trolley is brought into particularly good contact with the surface of the trolley.

In the conventional current collection method in which the collector is pressed against a bare contact wire while sliding, as the speed of an electric vehicle such as an electric vehicle increases, the contact pressure increases and the contact sliding between the contact wire and the collector increases. However, the disconnection rate increases, the wear due to sliding increases, and the generation of noise is large.

Therefore, a current collection system has been developed and put into practical use in which the trolley is of a duct type, and the current collector connected to the electric movable body via a connecting rod is accommodated in the duct and slid in contact with the current collector.

According to this current collection method, the current collector is housed in the duct, which reduces noise generation, and in order to improve the contact between the current collector and the trolley surface, the current collector itself is made of a metal with good spring properties, which increases the wire loss rate. are improving.

However, during long-term use, the springiness of the current collector decreases,
There was a drawback that sufficient current collection could not be obtained.

In view of this, the current collector of the present invention provides a duct-type trolley that is marked with "a" along the travel path of the electric movable body, has an opening at one location in the circumferential direction, and has an integral trolley surface as an inner surface. a current collector that slides in contact with the trolley surface of the trolley; and a connecting rod that extends through an opening in the trolley and transmits power from the current collector in the trolley to the electric moving body, the current collector being connected A first current collector portion that is fixed to the end of the rod and slides on the trolley surface, a second current collector portion that is slidably fitted to the outer periphery of the connecting rod and slides on the trolley surface, and and a resilient metal spring interposed between the first and second current collector portions in the axial direction of the spring.

In this invention, a repulsive metal spring is inserted between the partial current collectors and elastically supported by the connecting rod, so that even if the current collector itself does not have spring properties, the repulsion of the inserted metal spring allows the trolley to face the surface of the trolley. Since one current collector is in contact with the connecting rod and is elastically supported by a metal spring,
It is possible to provide a simple current collector that contacts the trolley surface regardless of the movement of the connecting rod, has a low M line rate, has low noise, and has a long life.

Next, this will be explained in more detail based on the drawings.

Figure 1 shows an example of the current collector according to the present invention.
The current collector 3 that slides in contact with the trolley surface 2 of the duct type trolley with a circular cross section is housed inside the duct type trolley, which is the same as the conventional one, but the current collector 3 is divided into left and right parts. A repulsive metal spring 4 is inserted between □ and 3□, and the repulsive force of the metal spring 4 presses the current collectors 3 and 3° against the trolley surface 2.

In the figure, reference numeral 5 indicates a connecting rod for pulling the current collector connected to the electric movable body, and the current collector 3 is pulled out from the opening 6 of the duct type trolley and fixed to this connecting rod 5 with screws 7.] , and the connecting rod 5, and the current collector 3° connected to the current collector 3 through the metal spring 4 is pulled against the trolley surface 2 while being pressed against the trolley surface 2. The wire acts as a lead wire for the current collected by the wire and leads the electricity to the electric car (not shown).

Reference numeral 8 indicates a support for fixedly supporting the duct type trolley.

Furthermore, although the duct type trolley is shown as having a circular cross section in the drawings, it is not limited thereto, and may be of a rectangular or triangular cross section.

Furthermore, the current collector 3 can be streamlined in the direction of the sliding force to reduce frictional resistance, making it suitable for high-speed electric vehicles.

Furthermore, in the present invention, the current collector 3. If the repulsion of the metal spring 4 inserted between 32 and 32 is lowered, the disconnection rate of collectors 3□ and 3□ will be reduced, but
Since there is a risk of increased wear between the current collectors 31 and 3□, it should not be made too thick, and if either the current collector 31 or 3□ is in contact with the trolley surface, disconnection will not occur and the wear on the current collectors 31 and 3□ will be reduced.

In particular, if a highly abrasion-resistant conductor is used for the collectors 31 and 3°, and if the trolley surface 2 is lined with stainless steel, wear will be further reduced and the life of the duct type trolley current collector will be longer. is obtained.

As explained above, according to the present invention, the current collector housed in the duct type trolley is divided into parts, and a resilient metal spring is inserted between the partial current collectors, so that at least one of the current collectors is elastically attached to the connecting rod. Because it is supported, the current collector can be brought into pressure contact with the trolley surface even though the current collector itself does not have spring properties, and one side of the partial current collector is electrically and mechanically elastically supported by the connecting rod by a metal spring, reducing the wire loss rate. It has the advantage that a small, low-noise, long-life current collector can be easily obtained.

In the present invention, since the trolley surface is integral, even if one of the two current collector parts is separated from the trolley surface, it can still receive power from the other.

One of the two current collector parts slides on the outer circumferential surface of the connecting rod, so power can be transmitted from the one current collector part to the connecting rod via the sliding part, and one of the current collector parts Since they are connected to each other via a metal spring, their electrical characteristics are good.

Furthermore, in the present invention, the electric power from the collector is transmitted to the electric movable body through the connecting rod passing through the opening of the trolley, so the configuration for extracting the electric power from the collector is very simple.

[Brief explanation of the drawing]

The drawing is an explanatory view showing an example of a current collector for a duct type trolley according to the present invention. 1... Duct type trolley, 2... Trolley surface, 3... Current collector consisting of partial current collectors 3□ and 3°, 4... Repulsion sexual metal spring,
5...Connecting rod.

Claims (1)

[Claims for Utility Model Registration] A duct-type trolley that is arranged along a running path of an electric mobile body, has an opening at one location in the circumferential direction, and has an integral trolley surface as an inner surface, and the trolley surface of the trolley. a current collector sliding in contact with the trolley; and a connecting rod extending through the opening of the trolley and transmitting power from the current collector in the trolley to the electric mobile body, the current collector being connected to a first current collector portion fixed to the end of the rod and sliding on the trolley surface; a second current collector part that is slidably fitted on the outer periphery of the connecting rod and slides on the trolley surface; and a second current collector part that is interposed between the first and second current collector parts in the axial direction of the connecting rod. A current collector for a duct type trolley, characterized by having a repulsive metal spring inserted therein.