RU30316U1 - The collector element of the current collector of an electric vehicle - Google Patents

Description

The collector element of the current collector of an electric vehicle

The utility model relates to electric transport and can be used as current collection elements of an electric vehicle, for example, by tram.

Known current collector element of the current collector of an electric vehicle (RF patent No. 2168422, class B60L 5/08, "Current collector element of the current collector of an electric vehicle, publ. 06/10/2001), containing a metal frame and placed in it a composite carbon-containing plate with a contact surface and base. The base in contact with the metal frame is placed horizontally and made in the form of a "dovetail." The contact surface of the plate has a lead-in, the angle of inclination of which to the base is 30 ° 60 °, and is made of an arcuate shape, with a radius of 2-5 m.

A disadvantage of the known design is the complexity and high cost of manufacturing an arc-shaped contact surface of a composite carbon-containing plate.

MKI: B60L 5/08

in addition, the plate, in contact with an arcuate surface with the contact wire when the electric vehicle is moving, causes the wire to oscillate from left to right, which create additional dynamic loads on both the contact wire and the wire suspension nodes, causing them to break, break, and break the contact network and current collector elements.

In addition, due to the difference in the height of the current collector due to the arched shape of the contact surface, there is insufficient clamping of the current collector to the contact wire, especially in those sections of the path where the height of the contact wire is maximum and the height of the surface in contact with the current lead is minimal. Insufficient pressing of the contact part of the current collector on the contact wire leads to disruption of the contact and the formation of an electric arc during current collection, causing a rise in temperature, fusion and destruction of the contact wire, as well as burnout of the current collector element.

Another disadvantage of the known collector element is the lack of interchangeability of the two extreme lateral elements of the carbon-containing plate, working on bends: due to shortcomings of the contact network, namely, imperfections in the fastening and uneven tension of the contact wire, the contact surface of one of the extreme side elements wears out faster than the second. This leads to the fact that the need for the right extreme side elements of the carbon contact plate is 1.5-2 times higher than the left, as a result of which the left extreme side elements of the composite contact plate are accumulated in warehouses, because left and right

elements are produced simultaneously in equal amounts (data for the Chelyabinsk tram den for the period from January 1999 to January 2003).

A disadvantage of the known design is the imperfection of the design of the contact surface of the carbon-containing plate, namely, the shortened contact of the plate with the wire, which leads to a possible separation of the current-collecting element from the current lead, which can lead to sparking and deterioration of the current collector under conditions of high speeds of the electric vehicle and oscillations of the current lead.

The presence of the lead-in part, shortens the contact surface, reduces the dynamic loads on the current collector element that occur at the moment the electric vehicle begins to move and arise due to the non-rigid fastening of the current collector element to the current collector.

Known current collector element of the current collector of an electric vehicle (RF patent Jvfo 2184041, class B60L 5/08, "Current collector element of the current collector of an electric vehicle, publ. 06/27/2002) contains, the metal frame and size; the composite carbon content contained therein, th plate, with contact surface, and base. The base is made in the form of a dovetail and is in contact with a metal frame. The base is carbonaceous, its plate consists of three sections. The middle section of the base is spread; it is horizontal, and the side sections of the base are placed at an angle to the middle section. The contact surface of the plate has a lead-in part, the angle of inclination of which to the base is

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the surface of the plate is made in an arcuate shape, with a radius of 2-5 m.

A disadvantage of the known design is the complexity and high cost of manufacturing an arc-shaped contact surface of a composite carbon-containing plate.

In addition, the plate, in contact with an arcuate surface with the contact wire when the electric vehicle is moving, causes the wire to oscillate from left to right, which create additional dynamic loads on both the contact wire and the suspension nodes of the wire, causing them to crack, break, and break the contact network and current collector elements.

In addition, due to the difference in the height of the current collector due to the arched shape of the contact surface, the current collector is insufficiently pressed to the contact wire, especially in those sections of the path where the height of the contact wire is maximum and the height of the surface in contact with the current lead is minimal. Insufficient pressing of the contact part of the current collector on the contact wire leads to disruption of the contact and the formation of an electric arc during current collection, causing a rise in temperature, fusion and destruction of the contact wire, as well as burnout of the current collector element.

Another disadvantage of the known collector element is the lack of interchangeability of the two extreme lateral elements of the carbon-containing plate, working on bends: due to shortcomings of the contact network, namely, imperfections in the fastening and uneven tension of the contact wire, the contact surface of one of the extreme

side elements wear out faster than the second. This leads to the fact that the need in the right extreme side elements of the carbon contact plate is 1.5-2 times higher than the left, as a result of which the left extreme side elements of the composite contact plate are accumulated in warehouses, because left and right elements are produced simultaneously in equal amounts (data for the Chelyabinsk tram depot for the period from January 1999 to January 2003).

A disadvantage of the known design is the imperfection of the design of the contact surface of the carbon containing plate, namely, the shortened contact of the plate with the wire, causing a possible separation of the collector element from the current lead, which can lead to sparking and deterioration of the current collector under conditions of high speeds of the electric vehicle and oscillations of the current lead .

The presence of the lead-in part is shortened: the contact surface reduces the dynamic loads on the current collector element that occur at the moment the electric vehicle starts moving and arise due to the non-rigid fastening of the current collector element to the current collector.

The technical result of the proposed utility model is to increase the manufacturability of production, increase the service life, unify the components of the collector element and reduce the dynamic loads acting on the current lead.

The technical result is achieved by the fact that the collector element of the current collector of an electric vehicle.

containing a metal frame and a composite graphite-containing plate placed in it, containing a contact surface and a base, which is made in the form of a dovetail and contains three sections, the middle section of the base is horizontal and the side sections are at an angle to the middle, according to a utility model, it is rigidly connected with a current collector, a graphite-containing plate contains three functional parts with contact surfaces, the middle part is placed horizontally, and the side parts are located at an angle to the middle, the cross sections of the middle part of the plate are congruent with each other, the length of the contact surface of the middle part of the plate is L 50-600 mm, and the contact surfaces of the side parts of the plate are made flat.

In addition, the collector element of the current collector of an electric vehicle is characterized in that the cross section of the contact surface of the middle part of the graphite-containing plate is a horizontal segment.

Rigid fastening of the collector element to the current collector makes it possible to reduce the amplitude by which the collector element deviates at the moment of the start of movement, reducing dynamic loads.

The design of a graphite-containing plate consisting of three functional parts allows to increase the manufacturability of manufacturing and reduce the cost of the collector element.

The congruence of the cross sections of the middle part of the graphite-containing plate allows to increase the manufacturability of the production of the collector element, to reduce dynamic loads

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acting on the contact wire from the side of the current collector and to provide better current collection, due to a softer effect on the contact network due to the lack of oscillation of the contact wire left and right.

The length of the contact surface of the middle part equal to 50-600 mm provides the required current collector for any contact wire mounting schemes.

Flat execution of the contact surfaces of the lateral parts of a graphite-containing plate working on the turns of an electric vehicle increases the manufacturability of the production of the collector element.

The shape of the contact surface of the middle part, the cross section of which is a straight segment, allows you to maximize the contact surface area of the current collector and the current lead and provide sparkless current with varying height of the contact wires, increase the reliability of the interaction of the wire and the current collector in dangerous places, provide interchangeability of the side edge elements of a composite graphite-containing plate .

The inventive current collector element of the current collector has a novelty, since when conducting a search on the sources of patent and scientific literature there are no devices with the same set of features.

The inventive collector element can be manufactured using standard equipment and materials, and used in electric vehicles, in particular in urban and railway transport, therefore, it meets the criterion of "industrial applicability.

The essence of the claimed device is illustrated by drawings. In FIG. 1 shows a longitudinal section of a collector element rigidly connected to a current collector, which is shown schematically.

In FIG. 2 is a cross section of a current collector member AA of a current collector of an electric vehicle. The collector element of the current collector of an electric vehicle, contains a metal frame 1 and a composite graphite-containing plate 2 placed therein, containing a contact surface and a base, the base of the plate is made in the form of a dovetail, and contains three sections 3, 4, 5, the middle section 4 of the base is located horizontally and the lateral sections 3 and 5 are at an angle to the middle 4. The collector element is rigidly connected to the current collector 10. The graphite-containing plate 2 contains three functional parts I, II, III with the corresponding contact surfaces 6, 7, 8, the middle part II is placed horizontally, and the lateral parts I and III are located at an angle to the middle, the cross sections 9 of the middle part II of the plate 2 are congruent to each other, the length of the contact surface 7 of the middle part of the plate is L 50-600 mm and the contact surfaces 6 and 8 of the side parts I and III of the graphite-containing plate 2 are made flat.

The contact surface 7 of the middle part P of the plate 2 in cross section is a horizontal segment. The collector element operates as follows. Graphite-containing plate 2, located in a metal frame 1, reinforced in it with a base made in the form of a dovetail, for fast and reliable fastening

the plate slides along the current lead with the contact surface 7 of the middle part II on straight sections of the road and the contact surfaces 6 and 8 of parts I and III of the graphite-containing plate 2 in the corners, transmitting current from the current lead to the engine of the electric machine.

At the moment the electric vehicle begins to move, the rigid fastening of the current collector element to the current collector 10 contributes to the minimum deviation of the current collector element from the equilibrium position, reducing the dynamic load on the current lead from the current collector.

The shape of the contact surface 7 of the middle part II, the cross sections of which are congruent with each other, ensures the stability of the contact wire relative to its axis, thereby reducing dynamic loads on the current lead from the current collector, thereby increasing the service life of the contact network and the current collector.

The applicant conducted experimental studies of the wear resistance of graphite-containing plates, with a rigid fastening of the collector element to the current collector 10.

Testing of plates made according to the proposed design, the prototype design and the analog design was carried out in dry weather on the same route.

The wear of the plates was measured with a micrometer.

The results of experimental studies of the wear resistance of the plates are summarized in table 1.

Table 1

The applicant has made calculations of a possible economic project from the use of the proposed design. The calculation results are summarized in table 2.

Thus, the selected design of the collector element improves the manufacturability of production, increases the service life, unifies the components of the collector element and reduces the dynamic loads acting on the current lead.

10

table 2

Claims (2)

1. The collector element of the current collector of an electric vehicle, containing a metal frame and a composite graphite-containing plate placed therein, containing a contact surface and a base, which is made in the form of a dovetail, and contains three sections, the middle section of the base is horizontal, and the side sections are at an angle to the middle, characterized in that it is rigidly connected to the current collector, the graphite-containing plate contains three functional parts with contact surfaces, the middle part of the meschena horizontally, and side portions disposed at an angle to the middle, the cross-sectional middle of the plate are congruent with each other, the mean length of the contact surface of the plate L = 50-600 mm, and the contact surfaces of the side portions of the plate are flat. 2. The collector element of the current collector of an electric vehicle according to claim 1, characterized in that the cross section of the contact surface of the middle part of the graphite-containing plate is a horizontal segment.