RU2200677C2 - Upper contact unit of current collector for electric vehicle - Google Patents

Abstract

FIELD: transport engineering. SUBSTANCE: upper contact unit for current collector of electric vehicle consists of two trolleys hinge mounted on upper frame of current collector and pans secured on vertically movable spring-loaded rods arranged in trolley guides. Guides of rods of one of trolleys are hinge mounted on axle square to length of pan. EFFECT: prevention of wedging of trolley at non-uniform travel of rods. 2 dwg

Description

 The invention relates to transport equipment, namely to the upper contact nodes of the current collectors for electric rolling stock.

 Known upper contact node in the current collector, consisting of two carriages pivotally mounted on the upper frame with two runners telescopic rods interconnected and connected to vertically movable sprung carriage rods by spherical hinges (European patent 0222128, MKI 4 B 60 L 5/26, upper node figa and Fig. 2B).

 The disadvantage of this upper assembly is that when the runners move in a non-planar way (and this is possible when the contact wire is not located in the center of the runner — closer to one of the carriages), the rod may jam in the holder of the carriage carriage due to kinematic displacement along the arc center hinge suspension skid.

 The closest in technical essence is the upper node, consisting of two carriages mounted pivotally on the upper frame of the current collector, and a pivotally mounted skid on vertically movable sprung rods placed in the guiding clips of the carriages (European patent 0042334, MKI 3 V 60 L 5/28, see the upper node of Fig.6, 7 and 10).

 The disadvantage of this upper node is the possibility of jamming the carriage rods with non-planar parallel movement of the runner. Such a movement takes place, since during operation the contact wire constantly moves from the center of the runner to the right or to the left end of the runner. The carriage closest to the contact wire will receive most of the contact pressure component.

 The rod failure of this carriage will be greater, therefore, the displacement of the centers of the hinge of the runner will be different, the distance along the hypotenuse between the centers of their hinges and the centers of the axes of the carriage rods due to asymmetric displacement will be different. By virtue of this, the runner will divert the center of the rod hinge towards the side of the less sagging carriage, which will lead to jamming of the rod in the carriage guide ring.

 An object of the present invention is to prevent jamming of carriages during uneven running of the rods of adjacent carriages.

 This problem is solved by the fact that in the known upper contact node of the current collector, consisting of two carriages mounted pivotally on the upper frame of the current collector, and a pivotally mounted runner on vertically movable sprung rods placed in the guide clips of the carriages, and the guide clips of the rods of one of the carriages are pivotally mounted on an axis perpendicular to the length of the runner.

 The positive effect is that the possible difference in the distances between the centers of the hinges of the suspension of the runner and the centers of the rods in the guide carriages will be compensated by the rotation of the rods with guide clips pivotally mounted on one of the carriages, excluding its jamming.

Figure 1 shows the proposed upper node with equidistant placement of the contact wire between the carriages;
figure 2 - when placing the contact wire closer to one of the carriages.

 On the upper frame 1 there are two carriages 2 and 3, bearing runners 4 and 5, interacting with the contact wire 6. The runner 4 and 5 are pivotally mounted on the vertically movable sprung rods 7 and 8 of the carriages with axes 9 and 10. The rods 7 and 8 are placed in the guides clips 11 and 12 of the carriages 2 and 3. In this case, the guide clips of the rods 7 of one of the carriages, for example 2, are pivotally mounted on the axis 13, perpendicular to the length of the runner 4 and 5.

 The top node works as follows.

 When placing the contact wire 6 in the middle of the runners 4 and 5, the failure (stroke) of the rods 7 and 8 of the carriages from the contact pressing will be the same and the probability of jamming of the rods 7 and 8 is excluded. When placing the contact wire 6 closer to one of the carriages, for example 2, most of the contact pressing will fall on the rods 7 (see figure 2). In this case, the rods 7 and 8 will sag at different sizes. The difference in the failure of rods 7 and 8 of the carriages 11 and 12 could lead to a relative shift of the centers of the hinges of the runners and the axes 13 of the guiding clips of the carriages, however, jamming of the rods 7 and 8 in the clips 11 and 12 will not occur, because the hinge of the runners will lead the axis of the rods 7 toward itself by turning the yokes 11 on the axis 13, eliminating the difference in displacements and the possibility of jamming.

Claims (1)

 The upper contact node of the current collector for electric rolling stock, consisting of two carriages pivotally mounted on the upper frame of the current collector, and pivotally mounted runners on vertically movable sprung rods placed in the carriage guides, characterized in that the guide rods of the rods of one of the carriages are pivotally mounted on the axis perpendicular to the length of the runner.

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