JPS6119467B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rack type diesel electric locomotive equipped with a resistor for dynamic braking and a radiator for cooling the diesel engine.

A diesel electric locomotive is equipped with a diesel engine, a drive motor, a power generating brake resistor for using the drive motor as a generator during braking, and a radiator for cooling the engine.

Diesel electric locomotives that run on flat tracks do not run on steeply sloped rails, so the locomotive's inclination is not large.
Therefore, the exhaust air that has cooled the radiator and the dynamic brake resistor does not reach the driver's cab, and most of it is diffused above the driver's cab. On the other hand, conventional diesel electric locomotives
On graded railways that do not require a normal rack mechanism, the locomotive must be operated in either direction, up or down, and power running and power generation brakes must be operated in either direction. The positions of the exhaust ports of the resistor and the radiator were not particularly problematic.

However, in a rack-type diesel electric locomotive dedicated to steep slope tracks as shown in FIG. 1, when the rack wheels 1 of the locomotive run on a rack rail 2 with a steep slope, the locomotive leans significantly in the running direction.

Therefore, the exhaust air whose temperature has increased by cooling the power generating brake resistor 3 and the radiator 5 enters through the window of the driver's cab 7, and the dust blown up by the exhaust air can enter the driver's eyes. There is a problem that it may cause damage to the equipment. Figure 1 shows a locomotive running down a steep track. In this case, the dynamic brake resistor 3 and the radiator 5 are located below the driver's cab 7. The exhaust air from the resistor 3 enters the driver's cab 7. On the other hand, if the exhaust port of the generator brake resistor 3 and the radiator 5 is located above the driver's cab 7 in the state shown in FIG. do not have. However, when traveling uphill, the diesel engine 10 is rotated at full speed, so it is directly affected by the exhaust air from the radiator 5.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to reduce the amount of hot air and dust generated by the exhaust air from the generating brake resistor and the engine cooling radiator when the locomotive runs on a slope track. It is an object of the present invention to provide a rack-type diesel electric locomotive whose entry into the cabin is controlled.

The rack-type diesel electric locomotive according to the present invention has a generating brake resistor and an engine cooling radiator arranged in the front and rear through the driver's cab, so that when running on a slope track, the generating brake resistor is always placed on the uphill side. The locomotive is operated with the engine cooling radiator located on the downhill side, and is provided with an operation restriction means that prevents the locomotive from operating otherwise.

An embodiment of the present invention will be described below with reference to FIG. The rack-type diesel electric locomotive according to the present invention includes a diesel engine 10, a main generator 9 driven by the engine 10, a radiator 5 for cooling the engine, and a cooling fan 6 for the engine, and the main generator The vehicle is equipped with a DC motor 8 that is driven by electrical energy from a power source 9 to rotate the wheels, a power generation brake resistor 3 connected to the DC motor 8 when the DC motor 8 is used as a generator, and a cooling fan 4 for the power generation brake. In addition to rotating the wheels, the DC motors 8 have enough units to also rotate the rack wheels 1 that engage with the rack rails 2 installed on the steep slope track. and,
The most important configuration is the electrical braking resistor 3.
The air exhaust port of the radiator 5 and the air exhaust port of the radiator 5 are opened on both sides in the running direction of the locomotive, sandwiching the driver's cab 7.
On the steep slope route, the locomotive is run so that the exhaust port of the power generation brake resistor 3 is on the uphill side of the cab 7, and furthermore, on the steep slope line, the power generation brake resistor 3 is located closer to the top of the hill than the driver's cab 7. To prevent the vehicle from driving in a direction that would lead to the downhill side, driving restriction means were installed, such as opening the driving circuit using an electric switch or the like.

When the rack type diesel electric locomotive constructed in this way runs down a steep slope track using the rack wheels 1 and rack rails 2, it normally runs while braking without accelerating, so the diesel The engine 10 is rotated at low speed (idling), while the DC motor 8 is switched to a generator to perform dynamic braking. At this time, the electrical energy generated by the DC motor 8, which has been switched to a generator, is guided to the power generating brake resistor 3 and converted into heat. This heat is cooled by ventilation from the cooling fan 4 and discharged to the outside. However, when traveling in the downhill direction, the exhaust port of the electrically generating brake resistor 3 is located on the uphill side of the driver's cab 7, so the exhaust air flows away from the driver's cab 7 as shown in FIG.
There is no impact on driver's cab 7. On the other hand, the radiator 5 located in front of the driver's cab 7 (on the slope side) radiates only a small amount of heat because the diesel engine 10 rotates at low speed when driving downhill, and the amount of heat radiated by the cooling fan 6 is also small. Therefore, only a small amount of exhaust air whose temperature is not very high is released, and the influence on the driver's cab 7 is slight.

On the other hand, when traveling uphill on a steeply sloped track, the generating brake resistor 3 is hardly used, and therefore the exhaust air is small. Even if 3 is located, it has little effect. On the contrary, the diesel engine 10 produces maximum output and the radiator 5
There is also a large amount of high temperature exhaust air sent out from the radiator fan 6. However, since the exhaust port of the radiator 5 is located on the downhill side from the driver's cab 7,
The hot air and dust leave the cab 7 and go downhill, so that there is no negative effect on the cab 7 due to the exhaust air.

Furthermore, when running on a flat track, there is almost no inclination with respect to the running direction of the locomotive, so the flow of exhaust air does not approach the driver's cab 7 side, and therefore is not affected by the exhaust air.

As described above, the rack-type diesel electric locomotive according to the present invention has an exhaust port for a generating brake resistor and an exhaust port for a radiator for engine cooling arranged at the front and rear of the driver's cab, and tilts only to one side. When running on a graded track, the locomotive is always run so that the exhaust port of the generator brake resistor is located on the uphill side, and the exhaust port of the radiator for engine cooling is located on the downhill side. Since it has been made impossible to operate the locomotive in a direction where the resistor's exhaust port is on the downhill side of the driver's cab, hot air and dust from the exhaust air from the dynamic brake resistor or the engine cooling radiator can enter the driver's cab. This has the effect of suppressing intrusion.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional rack-type diesel electric locomotive, and FIG. 2 is a side view showing an embodiment of the rack-type diesel electric locomotive according to the present invention. 3... Resistor for power generation brake, 5... Radiator, 7... Driver's cab.

Claims (1)

[Claims] 1 Equipped with a diesel engine, a radiator for cooling the diesel engine, and a resistor for power generation braking, the vehicle reciprocates on a track including a slope track inclined in only one direction, and on the slope track, a rack wheel is engaged with a rack rail. In a rack-type diesel electric locomotive that runs on the slope, an air outlet for the radiator and an air outlet for the power generation brake resistor are provided at the front and back in the direction of travel, sandwiching the driver's cab of the locomotive, and when the locomotive runs on the slope, The locomotive is run such that the exhaust port of the generator brake resistor is located on the uphill side of the driver's cab, and the exhaust port of the power generator brake resistor is located on the downhill side of the driver's cab on the slope track. A simple diesel electric locomotive characterized by being equipped with a driving control means that makes it impossible to operate the locomotive in any direction.