SU600003A1 - Device for automatic retaining and lowering of trolley-bus collector pole - Google Patents

Description

both by the driver’s command when lowering the current-collecting rods and fixing their iodine “lira.

FIG. 1 is a schematic diagram of the proposed device; in fig. 2 shows the location of the proposed device on the trolley bus; in fig. 3 - one of the drive shafts with all the elements on it.

A device for automatically catching and lowering the trolleybus current collector rod is located in housing 1 mounted in the body of the trolleybus or on the roof {FIG. 2). The housing has a hole for hemp rope 2, which through blocks 3 is connected to a current-collecting rod 4. On the body of the trolleybus, there are guides 5 for current-collecting rods and limiters 6 of the hemp rope.

The device contains a drive shaft 7, lie on the supports 8 and 9. On the shaft there is a winding drum 10, a ratchet AND and a nut 12, which is connected to the pin 13 on the landing movement. On the support 8 there is a limit switch 14. The drive shaft is connected to a pneumatic motor 15 .

Latch 16 by the knee 17 is connected to the core 18 of the electromagnet 19 and Iasazhena on the axis 20.

The electrical part includes a relay unit with a starting relay 21 and contacts 22 and 23. The automatic control unit contains a start button 24 with interlocking contacts 25 and controls an electromagnet 26 with a core 27 and a spring 28. In the power supply circuit of the electromagnet 19 there are signal lamps 29 and 30, the toggle switch 31 and the electric bell 32, and in the power supply circuit of the electromagnet 26, signal lamps 33, 34 and toggle switches 35. The core 18 is pressed by the spring 36.

The pneumatic circuit of the device contains a pneumatic motor 15, which is connected by means of pipelines with an air reducer 37 containing a conical actuator 38 and a valve 39 for fine pressure regulation. The cavities A to B of the reducer are communicated by the channels B inside the plug 38. In the emergency mode, the electrical part is supplied from the batteries 40.

The device for automatically catching and lowering the rods of the trolleybus current collector operates as follows.

In the operating mode (Fig. 1), when the current-receiving head is placed on the contact wire, the hemp rope 2 is constantly slightly tensioned by means of a pneumatic motor 15, into the working cavity of which, via the air reducer 37, compressed air is supplied with pressure that provides torque to the winding drum 10 50-70% less of the magnitude of the torque that occurs on the same drum from the impact of the tension spring 4. As a result

This, when the trolley bus leaves the drum 10 for overtaking by means of the tension spring of the rod 4, overcoming the torque of the pneumatic motor 15, rotates easily, unwinding at

This is the hemp rope 2. When the trolley bus comes under the contact wire, the rope is loosened and is wound onto the drum 10 by means of a pneumatic motor 15.

When the current pickup head comes off the wire

the contact network, the supply circuit of the coil 19 is opened by the contacts 22, and the latch 16 under the action of the spring 36 instantly stops the ratchet wheel II, which due to the efforts of the tension spring of the rod 4 through the rope 2

attempts to rotate in the direction of arrow G (Fig. 1). In this case, the latch 16 rotates around the axis 20 by an angle a and presses the start button 24, which closes the power supply circuit of the electromagnet roller 26. The contacts 25 block the start button 24. The core 27 under the action of the solenoidal force EMF engages and compresses the spring 28. The lamp 33 lights up reporting the current collector from the contact network wire. Cone

The plug 38 then moves to the right and communicates the cavities A to the B of the gearbox with a large tapered bore. Thus, the working pressure of the air network is supplied to the pneumatic motor 15, which, through the drive shaft 7 and the drum rigidly mounted on it, winds the hemp rope 2, lowering the current-collecting rod 4. The nut 12 (Fig. 3) sitting on the drive shaft 7 and fixed from the radial rotation by the finger 13, when winding the rope, it moves in the axial direction to the left. At the moment when the current-carrying bar in the direction of 5 (Fig. 2) comes under the “lira,” the nut 12 slides over the limit switch 14, which

opens the power supply circuit of the electromagnet 26 with the button "Stop. The spring 28 returns the plug 38 to the tapered seat, and the current-receiving rod 4 is fixed in its initial position under the lyre. The fixation under the lyre is indicated by the lamp 33 or the lamp 34 (they go out). When driving over de-energized sections of the contact network (junction of an arrow and breaker) and when the mains voltage is disconnected, in the case of overvoltage protection (current), the latch 16 engages the ratchet wheel 11, but does not turn through the angle how the current collector is located on the contact wire and the tension spring energy of bar 4 acts on the latter.

Thus, the ratchet wheel And does not act on the latch 16 in the direction of the arrow G, (Fig. 1).

To install the current collector 4 in the working position include a toggle switch-31, so

as the contact 23 is closed when the contacts 22 are open, the voltage on the coil of the electromagnet 26 is supplied from batteries 40. the wire. Having installed the current collector on the contact wire, they turn on the toggle switch 31. For this purpose, a call 32 is provided in the power supply circuit of the electromagnet coil 19 from batteries, which reminds that the toggle switch 31 is turned on.

If necessary, lower the current-collecting rods or one of them, the driver, who is in the cab, turns on the toggle switch 35 or one of them. The locking contacts 25 are closed and the current-collecting rods (or rod) are lowered to the non-operating position, where they are fixed by lyres.

The signal lamp 29 indicates that the coil of the electromagnet 19 is powered by a high-voltage network, and the lamp 30 is powered by a battery 40.

The valve 39 of the air reducer 37 serves to fine-tune the pressure of the air supplied to the pneumatic motor 15 at the operating mode of the current-collecting rods. This adjustment is made for each tension spring of the rods 4.

Using the invention completely eliminates the possibility of breakage of the rods, short circuits and breaks in the contact network. There is no need to use

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rod and shoe holder, full safety of pedestrians is ensured, moreover, iroies staging is automatic.

Claims (2)

1. Authorship certificate USSR № 85442, cl. B 601 5/04, 1956. 2. Rebrov S. A. Device and technical operation of trolley buses. Kiev, 1972, p. 199-201. Shch // g, 2 15