JPS5967156A - Mounting structure of resistor for dynamic brake - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a dynamic brake resistor of a diesel electric locomotive, particularly suitable for application to a box tab diesel electric locomotive. Regarding.

FIGS. 1 and 2 are a plan view and a side view showing the mounting structure of a conventional dynamic brake device when mounted on a diesel-electric locomotive. A conventional radiator cooling system for cooling water in a diesel electric locomotive is composed of a radiator core 1, a radiator fan 2 installed inside the radiator core 1, and a drive device 3 for driving the radiator fan 2. The brake device includes a dynamic brake resistor 4, a cooling fan 5 for cooling the resistor 4, a cooling air inlet 6 provided at the bottom of the fan 5, and a cooling fan 5 provided at the top of the resistor 4. and a wind discharge lower, each of which is installed within the vehicle body 15. In the figure, 8 is a diesel engine, and 9 is a main generator driven by the diesel engine 8.

As described above, in the past, the dynamic brake device and the cooling water radiator device were arranged separately, and each was provided with a dedicated fan. Having separate fans in this way takes up space on the locomotive, and has the drawback of increasing the length and weight of the locomotive.

Further, as a solution to the above-mentioned problem, the structure shown in FIG. 3, or the structures shown in FIGS. 4 and 5 have been proposed. In the example shown in Fig. 3, the dynamic brake resistor 4 is placed on the side of the car body and the radiator is placed on the top surface of the car body, and the examples shown in Figs. 4 and 5 are the radiator and dynamic brake resistor 4 in Fig. 3. The arrangement of the dynamic brake resistor 4 is reversed, or the dynamic brake resistor 4 is arranged adjacent to the shunt radiator core 1. In the figure, a
is the main passage, and a' is the inspection passage. However, if the dynamic brake resistor 4 shown in Figure 3 is placed on the side of the vehicle,
In an example where the radiator core 1 is placed on the top of the vehicle body, since the radiator core 1 is placed horizontally, is the vertical vibration exerted on the radiator core 1 during driving having an adverse effect? give. Since the usable space is only on the top surface, it becomes longer in the rearward direction than if it were placed on the side of the vehicle, which is not a good idea. There are drawbacks such as the complicated routing of the cooling water piping for the radiator core 1. Furthermore, in the example shown in Fig. 4 in which the dynamic brake resistor 4 is placed on the top of the vehicle body and the radiator core 1 is placed on the side of the vehicle body, rainwater will fall on the elements and supporting insulators of the dynamic brake resistor 4, which are exposed to high temperatures, resulting in a shortened lifespan. In addition, there are drawbacks such as a complicated waterproof structure for the wire connection portion. In addition, in an example in which the dynamic brake resistor 4 is placed adjacent to the radiator core 1, the surface of the dynamic brake resistor 4 becomes high temperature, which causes an adverse effect due to the radiant heat, and since the cooling fan is shared, the air volume increases and the radiator core Abnormal noises caused by the vibration of the radiator core fan due to the increase in the passing wind speed (1), the danger of electric shock when a person touches the dynamic brake resistor 4 when passing through the cooling system, the installation structure in a limited space, etc. It was difficult to implement due to the following problems.

An object of the present invention is to provide a mounting structure for a dynamic brake resistor that improves maintainability and safety.

In the present invention, the dynamic brake resistor is divided and arranged with an appropriate gap in the duct inside the radiator core attached to the side of the vehicle body. This is also designed to eliminate the adverse effects of radiant heat from the dynamic brake resistor, as well as eliminate electric shocks and the like caused by contact with the resistor. By creating a gap between adjacent dynamic brake resistors and bypassing cooling air other than the amount required for cooling the radiator through the gap, abnormal noise caused by fin vibration of the radiator core can be prevented. It is designed to prevent this.

Furthermore, the upper part of the dynamic brake resistor is covered with a duct to prevent rainwater from directly splashing on it.

FIG. 6 is a plan view showing one embodiment of the present invention, FIG. 7 is a sectional view taken along line B-B in FIG. 6, and FIG. 8 is a cross-sectional view taken along line C--
It is a sectional view taken along arrow C. In each figure, the same reference numerals are used for the same parts as shown in FIGS. 1 to 5.

As is clear from the figure, this embodiment includes a radiator core 1, a radiator fan 2, and a radiator fan vibration device 3f:
The layout is almost the same as that of conventional locomotives. However, in the main passage a, the car body was 15 because the conventional locomotive type was the hood type.
Whereas the dust and inspection passage a' was located outside the car body 15, the present invention has a structure that is often used in box-type diesel locomotives, etc., in which a main passage a is formed as shown in Fig. 8. A cooling device is constructed by a duct 11 between the radiator core 1 and the radiator fan 2.

The dynamic brake resistor 4 is supported on the upper and lower sides of the radiator core by a resistor support stand 14 provided in the duct 11, with an appropriate distance (50 to 300 mm) from the radiator core via the resistor support insulator 10. The upper part of the dynamic brake resistor 4 is arranged so that the duct 11 covers the rainwater that has entered from the radiator fan 2.
There is an inspection hole for maintenance such as removal 9 of the dynamic brake resistor 4, and an inspection cover 12 made of a transparent plate is attached to the inspection hole. For normal inspection, the area around the dynamic brake resistor 4 can be seen by looking through the inspection lid 12 from the main passage a, and if an abnormality is found, the work can be done more easily than by removing the inspection M12 and opening the inspection hole. It is possible.

With the above mounting structure, the distance between the radiator core 1 and the dynamic brake resistor can be maintained appropriately (C: 50 to 300 wrI) by considering the view factor of the radiator core and the resistor iG4 and the temperature of the resistor 4. It is possible to prevent an adverse effect on the radiator core 1.

Furthermore, the wind speed passing through the radiator core 1 is high (10 m
It is already known from experience that the cooling fins vibrate and generate high-frequency abnormal noise when the cooling fins vibrate when
By installing the dynamic brake resistor 4 and the dynamic brake resistor 4 separately, a gap e is provided between the dynamic brake resistor 4 and the dynamic brake resistor 4, and winds other than the required wind m are bypassed through this gap.

In addition, when the workers 9 and other passengers pass through the main passage a, the wind that cools the dynamic brake resistor 4 and becomes high temperature,
The risk of electric shock due to contact with the dynamic brake resistor 4 can be eliminated by placing it inside the duct 11.

According to the embodiment of the present invention, since the dynamic brake resistor and the radiator fan are cooled by a common fan,
One set of fans can be omitted, and the structure can be simplified and lightened. In addition, by dividing the dynamic brake resistor into multiple parts in the duct and installing them with gaps between them, the problem of abnormal noise in the radiator core and the dynamic brake resistor occur. It is possible to prevent the adverse effects of high heat on the radiator core.

In addition, personnel can be freed from negative effects and dangers when passing through the cooling equipment section. Furthermore, by securing space for installing a resistor support inside the duct,
The advantage is that two types of diesel-electric locomotives of the same type can be easily created as options by simply adding a dynamic brake resistor.

As is clear from the above, according to the present invention, maintainability and safety around the dynamic brake can be improved.

[Brief explanation of the drawing]

Figures 1 and 2 are a plan view and a side view of a conventional dynamic brake device mounted on a tasel locomotive, and Figures 3, 4, and 5 are conventional dynamic brake resistor mounting structures. FIG. 6 is a plan view showing an embodiment of the present invention, and FIG. 7 is taken along B-B in FIG. 6.
8 is a sectional view taken along the line C--C in FIG. 6. 1...Radiator core, 2...Radiator fan,
3... Drive device, 4... Dynamic brake resistor, 10... Resistor support insulator, 11... Duct,
12... point circulation 1 figure 3 figure 3 ￥ f figure 0-'d (L sugar 6 figure G 1000-/ figure figure 8

Claims (1)

[Scope of Claims] 1. A tasel electric locomotive equipped with a radiator core, a radiator device including a radiator fan for forcing cooling air to the radiator core, and a dynamic brake resistor, wherein the radiator A core is installed on the side of the vehicle body, and the dynamic brake resistor is installed adjacent to the radiator, and a duct is provided to form a ventilation path from the resistor to the radiator fan, and the dynamic brake is connected to the duct. A mounting structure for a dynamic brake resistor, which is characterized by having an inspection lid for inspecting the resistor. 2. The dynamic brake resistor mounting structure according to claim 1, wherein the inspection lid is formed using a transparent plate. 3. The dynamic brake resistor mounting structure according to claim 1, wherein the dynamic brake resistor is divided and arranged along a side surface of the vehicle body.