JP7023729B2 - Railroad vehicle cooling system - Google Patents

Description

Patent Law Article 30, Paragraph 2 Application 5th Railway Technology Exhibition 2017, November 29, 2017

The present invention relates to a cooling device for a railroad vehicle, and more particularly to a cooling device such as an air-cooled radiator or an oil cooler provided in a railroad vehicle such as a diesel railcar equipped with a diesel engine (internal combustion engine).

Conventionally, in diesel railcars operated in Japan, devices such as a diesel engine, a transmission or a main generator, an auxiliary drive device, a cooling water device, and an intake / exhaust pipe device are dispersedly arranged under the floor of the vehicle. ..

In recent years, the system has been changed from a liquid type to an electric type due to the aging of diesel vehicles, and the applicant has packaged each device dispersed under the floor into one. We are developing a power pack system "diesel power unit (DPU)" that is configured as a unit.

By adopting this unit method and standardizing and standardizing the surroundings of power system equipment, there are effects such as reduction of vehicle design man-hours, reduction of manufacturing cost by standardization and mass production, reform of maintenance method, and labor saving of equipment update. There is expected.

However, since the margin to the fitting limit of the railway vehicle (the limit width in which the equipment can be arranged under the floor of the railway vehicle) is small, it is necessary to make the entire DPU including the cooling device compact. Also, in order to make the best use of the fitting limit of railway vehicles, it is conceivable to arrange the motor on the outside and the core on the inside, but it is said that the motor will be an obstacle and cleaning and maintenance of the core will be difficult. There was a problem. If the core cannot be cleaned, dust and dirt will accumulate on the fins of the core and the cooling performance will deteriorate.

Therefore, an object of the present invention is to provide a cooling device for a railway vehicle, which can easily clean and maintain the core and prevent deterioration of cooling performance.

In order to achieve the above object, the present invention is a railroad vehicle cooling device, wherein a first housing for accommodating a core, a fan for blowing air to the core, and a motor for rotating the fan are supported. It is provided with two housings and a connecting member for connecting both housings so that the second housing can be detached from the first housing, and the second housing is located outside the first housing and is also provided . Both housings are mounted directly under the vehicle underframe below the floor surface of the railway vehicle so that the electric motor is located outside the second housing .

According to the present invention, by removing the second housing from the first housing by the connecting member, the core housed in the first housing can be easily cleaned and maintained, and the cooling performance is deteriorated. Can be prevented. Further, both housings are placed on the vehicle base below the floor surface of the railway vehicle so that the second housing is located outside the first housing and the motor is located outside the second housing. By installing it directly under the frame, the fitting limit of railway vehicles can be fully utilized.

The railroad vehicle cooling device includes a pin fixed to the first housing and projecting upward, and a pipe fixed to the second housing and rotatably accommodating the pin. It can be a hinge for insertion and removal. According to this configuration, the second housing is supported by the first housing via the insertion / removal hinge, so that when the motor needs to be replaced, it can be replaced with the second housing as a set, and the work efficiency. Is improved.

Further, a straightening vane that rectifies the air flow from the fan can be fixed to the first housing, and the cooling performance can be further improved.

According to the present invention, it is possible to provide a cooling device for a railway vehicle capable of easily cleaning and maintaining the core and preventing deterioration of cooling performance.

It is a partially broken sectional view which shows one Embodiment of the cooling system for railroad vehicles which concerns on this invention, (a) is a front view, (b) is a side view, (c) is a top view. It is a figure which shows the insertion / removal hinge of the cooling device for a railroad vehicle shown in FIG. 1, (a) is a front view, (b) is a bottom view. It is a schematic diagram which shows the state which the cooling system for a railroad vehicle shown in FIG. 1 is mounted on a vehicle. It is explanatory drawing of the removal method of the motor side housing of the cooling device for a railroad vehicle shown in FIG.

Next, an embodiment of the railroad vehicle cooling device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of a railroad vehicle cooling device according to the present invention, wherein the railroad vehicle cooling device 1 includes an air-cooled radiator for cooling cooling water and lubricating oil of a diesel engine of a railroad vehicle. A core 2 such as an oil cooler composed of tubes and fins, a fan 4 that blows air to forcibly cool the core 2, a rectifying plate 5 that rectifies the air flow from the fan 4, and a fan 4 are rotated. A core-side housing (first housing) 3 for accommodating a core 2 and a rectifying plate 5, and an electric motor-side housing (second housing) 6 for accommodating a fan 4 and supporting the electric motor 8. It is provided with an insertion / removal hinge 7 of a connecting member that detachably connects the core side housing 3 and the motor side housing 6 to each other, a bracket 9 for attaching the entire railroad vehicle cooling device 1 to the vehicle, and the like.

As shown in FIG. 2, the insertion / removal hinge 7 includes a blade 7a fixed to the core side housing 3 and a blade 7c fixed to the motor side housing 6, and the blade 7a is provided with a pin 7b and a blade. The 7c is provided with a tube 7d into which the pin 7b is inserted.

The left side surfaces of the core side housing 3 and the motor side housing 6 are detachably connected to each other by the above-mentioned insertion / removal hinge 7, and the right side surfaces of the core side housing 3 and the motor side housing 6 are bolts and nuts or the like. They are connected so that they can be easily attached to and detached from each other by a simple fastening means.

As shown in FIG. 1, the straightening vane 5 is fixed to the inner surface of the core-side housing 3 by bolts 21 and 22. Further, the fan 4 is connected to the output shaft 8a of the motor 8, and the entire motor 8 is fixed to the outer surface of the motor-side housing 6 with bolts 23 or the like.

In order to attach the railroad vehicle cooling device 1 to a vehicle, as shown in FIG. 3, the vehicle underframe 12 is located directly under the vehicle underframe 12 below the vehicle floor surface 11 and the electric motor 8 is located on the outside. The bracket 9 is used to fix the mounting portion (not shown) on the side. At that time, the railroad vehicle cooling device 1 is arranged so as not to protrude from the fitting limit 13 and the vehicle limit 14. Reference number 15 indicates a rail surface.

Next, a method of removing the motor-side housing 6 of the railroad vehicle cooling device 1 having the above configuration will be described with reference to FIG.

When the bolts and nuts (not shown) on the right side of the core side housing 3 and the motor side housing 6 are removed from the states shown in FIGS. 1 and 3, the motor is connected to the core side housing 3 by the insertion / removal hinge 7. The side housing 6 becomes rotatable and is in the state shown in FIG. 4A. Further, a state in which this state is viewed from the fan 4 side is drawn in FIG. 4 (d).

Next, from the state of FIG. 4A, the motor-side housing 6 is lifted upward with respect to the core-side housing 3 (
4 (b)), as shown in FIG. 2, by disengaging the engagement state between the pin 7b and the tube 7d, FIG. 4
As shown in (c), the motor-side housing 6 can be removed from the core-side housing 3.

In the states shown in FIGS. 4 (a) and 4 (d), the electric motor 8 does not interfere with the cleaning and maintenance of the core 2 (see FIG. 1), and dust such as fins of the core does not occur. Dust can be easily removed, and it is possible to prevent the cooling performance of the railroad vehicle cooling device 1 from deteriorating. Further, as shown in FIG. 4 (c), by removing the motor side housing 6 from the core side housing 3, when the motor 8 needs to be replaced, such as when the motor 8 fails, the motor side housing 6 is set. It becomes possible to replace it with, and work efficiency is improved.

In the above embodiment, the motor side housing 6 is detachably attached to and detachable from the core side housing 3 by using the insertion / removal hinge 7, but it is not always necessary to use the insertion / removal hinge 7, and the motor side housing 6 is used. If it can be attached to and detached from the core side housing 3, other connecting members may be used.

Further, it is not always necessary to provide the straightening vane 5, and even if the straightening vane 5 is provided, the dimensions in the width direction of the motor-side housing 6 are widened without being fixed to the inner surface of the core-side housing 3, and the motor-side housing is widened. It can also be fixed to the inner surface of the body 6.

Further, the railroad vehicle cooling device 1 may be a part of the diesel power unit (DPU) described in the background technology section, and may be a cooling device installed separately from the conventional device such as a diesel engine installed under the floor. You can also do it. Further, even if it is a part of the DPU, since the entire DPU is compactly configured, a plurality of small railroad vehicle cooling devices 1 can be installed in one DPU.

1 Rail vehicle cooling device 2 Core 3 Core side housing 4 Fan 5 Straightening plate 6 Motor side housing 7 Insertion / removal hinge 7a Blade 7b Pin 7c Blade 7d Pipe 8 Motor 9 Bracket 11 Vehicle floor 12 Vehicle underframe 13 Fitting out limit 14 Vehicle limit 15 Rail surface 21-23 bolts

Claims (3)

The first housing that houses the core and
A second housing that houses the fan that blows air to the core and supports the motor that rotates the fan, and
The second housing is provided with a connecting member that removably connects the two housings from the first housing, the second housing is located outside the first housing, and the electric motor is the first. 2 A cooling device for a railroad vehicle, characterized in that both housings are attached directly under the vehicle underframe below the floor surface of the railroad vehicle so as to be located on the outside of the housing. The connecting member is characterized by being an insertion / removal hinge including a pin fixed to the first housing and projecting upward, and a tube fixed to the second housing and rotatably accommodating the pin. The cooling device for a railroad vehicle according to claim 1. The cooling device for a railway vehicle according to claim 1 or 2, wherein a rectifying plate for rectifying an air flow from the fan is fixed to the first housing.

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