JPH0250681B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a current collector for a high-speed electric vehicle, which has a telescope mechanism, and the telescope mechanism connects a current collector shoe holder holding a current collector shoe to the current collector shoe holder. It consists of a current collecting tube that guides the current collecting shoe holder, and the current collecting shoe holder is elastically pressed against the overhead line by forces such as spring force, hydraulic force, and aerodynamic force. (See, for example, US Pat. No. 9,151,52. This type of current collector has already been out of use for some time now, since it has been replaced by the known pantograph type current collector in vehicles of normal speeds. However, this pantograph-type structure is also suitable for higher running speeds (per hour).
(over 250 km) has proven to be inconvenient for several reasons. At high travel speeds, a significant aerodynamic drag occurs with this pantograph structure, ie the pushing force on the overhead wire changes due to the increased travel speed and the greater contact line height.

A larger range of motion with respect to the contact line height results from a number of reasons. Vehicles for high running speeds must be built low, so that the air resistance is not too high and the cost per mile traveled (truss beam structure, overhead line equipment, etc.) is low. On the other hand, if we take into consideration the traffic at above-ground level crossings, and also assume that they will be used for the operation of freight trains, for example, it is possible to lay the overhead contact lines lower than currently customary. Can not. In this case, the difference in contact line height is up to 1m70cm. This height difference can no longer be achieved for economic reasons with conventional pantograph current collectors. Moreover, in this case the mass of the current collector, which follows the difference in contact line height, rises considerably, which, together with the correspondingly high travel speeds, impedes reliable current transfer.

The object of the invention is to eliminate the above-mentioned drawbacks and to provide a current collector which is equally suitable for high running speeds, large overhead contact line heights, and significant differences in the overhead contact line heights.

In order to solve the above problems, the present invention has the following features:
A current collecting shoe holder that holds the current collecting shoe is supported in a hole of the current collecting tube so as to be movable in the longitudinal direction, and the current collecting shoe is supported through a pressing means that generates a force to elastically press the current collecting shoe against the overhead contact line. The current collector tube is supported at the bottom of the hole, and the collector tube is height-adjustably inserted into an extension tube provided inside the roof through an opening that can be closed by a slider roof in the roof of the vehicle. is connected to a reversible drive motor for adjusting the height position of the current collector tube through a rack tooth provided on the current collector tube and a pinion that engages with the rack tooth. The motor is connected to a switch device that detects the relative position of the current collector shoe holder to the current collector tube and controls the drive motor to rotate clockwise or counterclockwise in order to keep the pressing force of the current collector shoe against the overhead contact line constant. This switch device is disposed between the current collector tube and the current collector shoe holder.

According to the above structure of the present invention, the current collecting shoe holder holding the current collecting shoe is supported by the bottom of the hole of the current collecting tube via the pressing means, and the current collecting shoe holder holds the current collecting shoe with respect to the current collecting tube. In order to detect the relative position of the collector shoe and keep the pressing force of the collector shoe against the contact line constant, a switch device placed between the collector tube and the collector shoe holder is used to adjust the height by the drive motor. Due to the adjustable position, it is possible to reduce the moving mass, i.e. the current collector shoe holder, which follows significant changes in the height of the contact line, so that the current collector shoe holder and thus the current collector Even when the running speed of the electric vehicle is high, the shoe can quickly follow significant changes in the height of the overhead contact line, ensuring good current transmission and preventing excessive friction between the overhead contact line and the collector shoe. In addition, the structure of the current collector becomes simple, and the air resistance is reduced due to the simple so-called rod-shaped structure.

Advantageous embodiments of the invention are defined in claim 2.
It is described below.

The invention will now be explained with reference to the illustrated embodiment.

The illustrated current collector has a current collecting shoe holder 1 on the upper side, and a swingable current collecting shoe 4 that contacts an overhead contact line 5 is pivotally mounted on this current collecting shoe holder 1. This current collector shoe holder 1 is supported so as to be movable in the longitudinal direction within a hole 6 of a current collector tube 2.
itself is guided into an extension tube 3. This extension tube 3 is mounted in a stationary bearing 19 inside the roof 17 of the vehicle, in the embodiment shown so as to be able to move up and down, and has a rack 23 provided on the extension tube itself and a pinion 24 engaging this rack. It is connected to the shaft 25 of the adjustment motor 26 via the shaft 25, so that the height position can be adjusted.

The current collector shoe holder 1 is supported at the bottom of the hole 6 of the current collector tube 2 via a coil spring 7 as a pressing means that generates a force for pressing the current collector shoe 4 against the overhead contact line 5 with a predetermined pressure. It is being Further, the current collecting shoe holder 1 is prevented from rotating by a pin 9 screwed into the current collecting tube 2 and projecting into a groove 8 of the current collecting shoe holder 1.

In use, the current collector tube 2 extends upwardly through an opening 22 in the roof 17 of the vehicle, and includes a rack toothing 10 provided on one side of the current collector tube 2, and a stationary rod engaging the rack toothing. It is connected via a pinion 11 to an output section 12 of a drive motor 13 that can rotate clockwise and counterclockwise, so that the height position can be adjusted according to changes in the height of the overhead contact line 5. For this,
The drive motor 13 is connected to a switch device 14 arranged between the current collector tube 2 and the current collector shoe holder 1 via a conductor 21 in order to detect the relative position of the current collector shoe holder 1 with respect to the current collector tube 2. connected. In the illustrated embodiment, the switch device 14 consists of a protrusion 15 and a recess 16 provided as control contacts on the current collector shoe holder 1 at a distance from each other in the longitudinal direction.
and a control member 27 that is provided on the current collector tube 2 between the protrusion and the recess 16 and can be actuated by the protrusion 15 or the recess 16 based on the moving movement of the current collector shoe holder 1. There is. vehicle roof 17
The opening 22 is completely closed by the slider roof 18 with the current collector tube 2 housed inside the roof 17.

The slider roof 18 is provided with a notch 18b on the right longitudinal edge corresponding to half the cross section of the current collector tube 2, through which the current collector tube 2 passes in order to cover the opening 22 in the operating state of the current collector. is forced to approach. Similarly, the further slider roof 18a is also provided with a recess 18b corresponding to half the cross section of the current collector tube and is brought close to the current collector tube. In the current collector shown in FIG.
It can also be used when traveling in the opposite direction to zero.
In the embodiment shown in FIG. 2, the current collector tube 2 and, by extension, the current collector shoe holder 1 are arranged to be inclined in the direction opposite to the running direction.

Now, in order to bring the current collector tube 2 and thus the current collector shoe holder 1 into the operating position, the slider roof 18,
18a is opened (FIG. 3) and the current collector tube 2 is raised by the drive motor 13 (FIG. 4). As a result, the current collector shoe 4 held by the current collector shoe holder 1 is brought into contact with the overhead contact line 5. train line 5
The pressing force of the current collector shoe 4 against the current collector shoe 4 is determined by the coil spring 7. When the height of the overhead contact line 5 becomes lower and the crimping force of the current collector shoe 4 increases, the current collector shoe holder 1 is moved downward against the spring force of the coil spring 7 (Fig. 5). The control member 27 of the switching device 14 is actuated by the protrusion 15 and sends a signal to the drive motor 13, on the basis of which the drive motor 13 moves the current collector tube 2 downward. Conversely, the pressing force of the current collector shoe 4 becomes lower, the current collector shoe holder 1 is moved upward by the coil spring 7 (FIG. 6), and the switch device 1 is moved upward by the coil spring 7.
4 control member 27 is actuated by the recess 6,
A signal is sent to the drive motor 13, and the drive motor 13 moves the current collector tube 2 upward based on this signal.
In this way, the pressing force of the current collector shoe 4 is kept constant.

The rising distance of the current collector tube 2 is extended by the extension tube 3 (FIG. 7). The extension tube 3 is preferably adapted to be moved downwardly when not in use by a stationary adjustment motor 26, as shown in the embodiment of FIG.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Figure 1 is a longitudinal cross-sectional view of a current collector with a rod-like structure, Figure 2 is a schematic diagram of an inclined current collector, and Figure 3 is a diagram showing the current collector with the current collector tube retracted to the lowest position. Figure 4 is a longitudinal cross-sectional view with the current collector pipe moved to the normal operating position, and Figure 5 is a longitudinal cross-sectional view with the current collector pipe moved to the normal operating position. FIG. 6 is a longitudinal sectional view of the current collector shoe in a state where it is pushed down excessively by the coil spring; FIG. The figure is a longitudinal sectional view of the current collector tube in an extended state. 1... Current collector shoe holder, 2... Current collector tube, 3...
...Extension pipe, 4...Current collector shoe, 5...Telephone line, 6
... Hole, 7 ... Coil spring, 8 ... Groove, 9 ... Pin, 10 ... Rack tooth section, 11, 24 ... Pinion, 12 ... Output section, 13 ... Drive motor, 14
. . . Switch device, 15 . . . Protrusion, 16 . . . Recess, 17 .
...Conductor, 22...Opening, 23...Rack, 25...
... shaft, 26 ... adjustment motor, 27 ... control member.

Claims (1)

[Claims] 1. A current collector for a high-speed electric vehicle, comprising:
It has a telescope mechanism, and the telescope mechanism consists of a current collector shoe holder holding a current collector shoe and a current collector tube that guides this current collector shoe holder, and the current collector shoe is operated by a spring force, It is elastically pressed against the contact line of the overhead line by forces such as hydraulic or aerodynamic forces, the current collector tube is arranged telescopically in the extension tube, and the height is adjusted by means of an adjusting device. In the position-adjustable type, a current collecting shoe holder 1 holding a current collecting shoe 4 is supported so as to be movable in the longitudinal direction in a hole 6 of a current collecting tube 2, and the current collecting shoe is held relative to the overhead contact line. an opening which is supported at the bottom of the hole 6 of the current collector tube 2 via a pressing means 7 which generates an elastic pressing force, and which the current collector tube 2 can be closed by a slider roof 18 of the roof 17 of the vehicle. 22, is inserted into an extension tube 13 provided inside the roof 17 so that its height can be adjusted, and a rack tooth 10 provided on the current collector tube 2 and a pinion 11 engaged with the rack tooth. is connected to a reversible drive motor 13 for adjusting the height position of the current collector tube 2, and this drive motor 13
is a switch device 14 that detects the relative position of the current collector shoe holder 1 with respect to the current collector tube 2 and controls the drive motor to rotate clockwise or counterclockwise in order to keep the pressing force of the current collector shoe 4 against the overhead contact line constant. A current collector for an electric vehicle, characterized in that the switch device 14 is arranged between the current collector tube 2 and the current collector shoe holder 1. 2. The current collector according to claim 1, wherein the extension tube 3 is arranged with a slight inclination in the running direction 20 or in a direction opposite to the running direction. 3. The current collector according to claim 2, wherein the extension tube 3 has a maximum inclination angle of 20 degrees. 4. The current collector according to any one of claims 1 to 3, wherein the extension tube 3 is arranged so as to be adjustable in the longitudinal direction. 5. The current collector according to any one of claims 1 to 4, wherein the slider roof 18 is composed of two parts and is configured to be slidable in mutually opposite directions. 6 A switch device 14 is arranged in the current collector tube 2 between two control contacts 15, 16 arranged longitudinally apart on the current collector shoe holder 1 and in the current collector shoe holder 1. 6. A current collector according to claim 1, further comprising a control member (27) operable by means of control contacts on the basis of a displacement movement.