JPS629069B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in current collection lines for urban transportation systems.

Figure 1A shows the current collection line of a conventional suspended monorail.
To explain using B, a in Figure 1 A is approximately 30 to 50 m.
The track girder is fixed at a height of approximately 8 m above the ground by supports (not shown) installed at intervals, b is the bogie body b ₁ , running tires b ₂ , guide tires b ₃ , and the same tires
A bogie consisting of drive motors b and _b4 for b ₂ and b ₃ , a train body in which d is connected to the same bogie b via a suspension link c,
e is the negative side panda graph provided on the above-mentioned truck b, f is the positive side panda graph provided on the above-mentioned cart b, g is the negative side current collection line provided on the above track girder a, and h is the positive side provided on the above track girder a. The same side current collecting wires are used for these current collecting wires g and h. For example, for the current collector wire g, JISE-1103
(JIS light rail) 9Kg rail, 6Kg rail, etc. are used and are connected longitudinally at a pitch of 5m or less. The details are explained with reference to Figure 1B.
i is the insulating rubber part, j is the collector wire fitting, k
is the current collector wire holding metal fitting (the width of these current collector wire support members i, j, k (the length along the longitudinal direction of the current collector wire g) is approximately 100 mm), l is the current collector wire support members i, j, With the bolt that fixes k to the above track girder a,
The current collecting wire g is connected to the current collecting wire supporting members i, j, k by 5
They are connected in the longitudinal direction with a pitch of m or less. In addition, m and n in Fig. 1 A are the running surface reinforcing members of the track girder a, and the negative side current collecting wire g and the positive side pantograph f are in contact and sliding, and the negative side panda graph e is in contact and sliding. By applying a potential difference to the negative current collector line h and supplying electric power to the drive motor _b4 , each tire _b2 , _b3 is driven, and the train body d is driven relative to the ground surface. It's becoming like that.

In the suspended monorail, when the shoe of the panda graph e touches and slides on the current collection line g, the current collection line g
vibrates, and its power level is 90 to 100 dB/m.
However, this vibration propagates to the track girder a, etc., which has a large acoustic radiation surface, through the current collecting line support members i, j, and k that are in direct contact with the current collecting line g, and this causes a problem of noise generation.

To deal with this, as shown in Fig. 2, a vibration absorbing rubber c is interposed between the collector wire g, the collector wire stopper j and the collector wire presser k, and the collector wire g, so that the shoe of the pantograph e is not attached to the collector wire g. Conventionally, it has been proposed to make it difficult for the vibration of the current collecting wire g that occurs when it slides on the track to propagate to the track girder a, etc., but in this case, the current collecting wire g
In order to hold it in place, it is necessary to firmly press the presser fitting k with the bolt l. In other words, it is necessary to increase the compression amount of the vibration absorbing rubber o.
Therefore, the spring constant of the vibration-absorbing rubber o inevitably increases (approaching rigid support), and the vibration-absorbing effect decreases. In addition, in order to improve this point, vibration absorbing rubber o
If the structure is such that the compression margin of is made small, the support of the current collecting wire g becomes soft, causing a problem that the current collecting wire g is inclined in the direction of the arrow A.

The present invention addresses the above-mentioned problems, and in a current collection line of an urban transportation system that is attached horizontally to a current collection line support member, the support part in the direction of the current collection line's own weight and the support part in the direction of pushing the pantograph are constructed separately. and a power collection line for urban transportation, characterized in that the support part in the pantograph pressing direction is attached to the power collection line support member via a vibration absorbing material with a small spring constant, and its purpose is to: An object of the present invention is to provide an improved current collection line for urban transportation that can support the current collection line without reducing the vibration absorption effect or tilting the current collection line.

The present invention provides a power collection line for urban transportation installed horizontally on a current collection line support member as described above.
The supporting part in the direction of the current collector's own weight and the supporting part in the direction of pushing the pantograph are made into separate structures, and the supporting part in the direction of pushing the pantograph is attached to the current collecting line supporting member via a vibration absorbing material with a small spring constant. It can support the current collector line without reducing the vibration absorption effect or tilting it, so it can be used for monorails, orbital buses, etc.
It is very useful to apply it to current collection lines (third rail, rigid suspended overhead contact line, rigid multiple overhead contact line) in subways, etc.

Next, the current collection line for urban transportation according to the present invention will be explained with reference to an embodiment shown in FIG.
is a bracket fixed to the same track girder 1, 3 is a steel wire rope whose upper end is attached to the same bracket 2, 4
is a bracket attached to the lower end of the wire rope 3, and 5 is a current collector wire attached to the same bracket 4. The length of the current collector wire 5 in the longitudinal direction is 5 m or less, and the current collector wire support members 2 and 3 are lined up along the current collector wire 5. . Moreover, the current collecting wire support member 2, in which the current collecting wires 5 are arranged at the above-mentioned pitch,
It is suspended and supported by 3 and 4. Note that the steel wire rope 3 may be string-shaped, beam-shaped with low bending rigidity, hook pin even with high bending rigidity,
Of course, other wires may be used as long as they suspend and support the current collector wire 5 in a pendulum shape, such as wires connected by a ball joint or the like and having a small moment reaction force, or chain wires. Further, numeral 6 is a vibration absorbing material such as vibration isolating rubber having a small spring constant, which is attached to the track girder 1 at the pitch of the bracket 5 or in a continuous manner, and is opposed to the bracket 5. Note that the same vibration absorbing material 6 may be attached to the bracket 5.

Next, the function of the current collecting wire will be explained. Orbit girder 1
is the current collecting wire 5 via the current collecting wire supporting members 2, 3, 4.
is supported in suspension, and the current collecting wire 5 is movable in the panda graph pressing direction (see arrow B).
There is a vibration absorbing material 6 between the bracket 4 and the track girder 1, and the movement of the current collector wire 5 in the direction of the track girder 1 is suppressed, so that the current collector wire 5 does not tilt in the direction of arrow A in FIG. Further, even if the shoe of the pantograph slides in contact with the current collecting line 5 and the current collecting line 5 vibrates, the supporting member that supports the current collecting line 5 in the direction of its own weight includes the above-mentioned members such as the wire rope 3, The vibrations of the current collector wire 5 are thereby absorbed and are less likely to be transmitted to the track girder 1. Furthermore, there is a vibration absorbing material 6 having a small spring constant between the bracket 4 and the track girder 1, and the vibration of the current collecting wire 5 is absorbed by this material and hardly propagated to the track girder 1. Therefore, the current collector wire 5 can be supported without reducing the vibration absorption effect or tilting it.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Figure 1A is a vertical front view showing a conventional suspended monorail, Figure 1B is a vertical front view showing an enlarged view of the current collector line, and Figure 2 is a vertical front view showing another example of the conventional current collector line. 3 are longitudinal sectional front views showing one embodiment of the current collection line for urban transportation according to the present invention. DESCRIPTION OF SYMBOLS 1... Current collector wire support member, 2, 3... Support part in the self-weight direction, 4... Support part in the pantograph pressing direction, 5... Current collector wire.

Claims (1)

[Claims] 1. In a power collection line of an urban transportation system that is installed horizontally on a current collection line support member, the support part in the direction of the current collection line's own weight and the support part in the pantograph pushing direction are made into separate structures, and the support part in the pantograph pushing direction is A current collection line for urban transportation, characterized in that the current collection line is attached to the current collection line support member via a vibration absorbing material having a small spring constant.