KR101239653B1 - Rail transport trainset, consisting of an engine and two compressors, particularly with a dry piston for the same - Google Patents

Abstract

The rail transport train comprises at least one rail car (2,3), parts operating with compressed air and means for the production of compressed air, comprising at least one set consisting of an engine (23,33) and two compressors (21,22), (31,32) for the production of compressed air and which are driven by the engine (23,33). Dry piston compressors are used advantageously.

Description

TRAIN TRANSPORT TRAINSET, CONSISTING OF AN ENGINE AND TWO COMPRESSORS, PARTICULARLY WITH A DRY PISTON FOR THE SAME}

The present invention relates to a rail transport trainset, an assembly of a motor and two compressors designed for use in a rail transport trainset, and the use of a compressor called a "dry-running piston compressor" in a rail transport trainset.

As an intermediate product, the present invention also relates to an assembly of one motor and two compressors designed for use in the above described rail transport train set.

As an intermediate means, the invention also relates to the use of a compressor, called a "dry-running piston compressor", for the production of compressed air in a rail transport trainset.

In trains, for example, Train a 'Grande Vitesse (T.G.V), various members must be supplied with compressed air to operate them. By way of example, these members are such as brakes, suspensions, doors, current collectors, chemical toilets, horns, windscreen wipers. Compressed air is provided by a compressor installed in a power vehicle. The compressor supplies compressed air to the pipe network which supplies the various members along the train set.

If the trainset includes two power vehicles, one compressor is usually installed in each power vehicle. If one of the compressors fails, this is compensated by another compressor that produces all air. In this configuration, however, only one compressor must continue to produce twice as much air. This latter compressor also has a high risk of failure. The result of such a failure is a great disaster. This is because the train must be stopped immediately on the track and the replacement vehicle must be moved to the place where the failure occurred in order to tow the stationary train set. The costs incurred are also significant.

Moreover, the compressors that deliver the power required for the operation of the various members (eg 22 KW to each power vehicle compressor of the TGV) are very large and, therefore, to replace the compressor, the roof of the power vehicle is removed and through the openings. You need to take it out and remove it. Such replacement requires the placement of special tracks, competent staff and demobilization of the power vehicle for a considerable time.

It is an object of the present invention to eliminate this problem.

Accordingly, the present invention relates to a rail transport trainset, which is called a "dry-running piston compressor" for the production of at least one electric vehicle, a member operating with compressed air, and compressed air, which is driven by a motor, Means for producing compressed air comprising an assembly of at least one of a motor and two compressors.

Applicant's boldness stands out. Specifically, to reduce the risk of compressor failure, it is proposed to double the number of compressors. However, since each compressor pair is driven by a single motor, and the failure of one motor causes the two compressors to fail at the same time, the obvious solution to that problem creates a similar problem. Thus, it is more logical to place two independent motor and compressor assemblies in each power vehicle while some risks of compressor failure are solved but create the same risk for the motor. Since this suggests that the problem be solved by means of causing similar problems, the present invention is not apparent and is intended to be countered.

Referring to FIG. 1, the railroad train trainset 1 of the present invention includes a first power car 2 coupled with a carriage 4 and a first power car 2. And a second power car 3 coupled farthest to the carriage 4. Thus, the trainset 1 comprises a carriage 4 and two power vehicles 2, 3, each arranged at the end of the trainset.

The power vehicles 2, 3 and the carriage 4 are connected together via bundles of pipes 5. The bundle 5 of this pipe comprises various elements, in particular a rigid attachment cable, a pipe for carrying electrical energy, and a pipe for carrying compressed air.

In the electric power vehicles 2 and 3, the two compressors 21 and 22 and 31 and 32 are respectively installed to be driven by a single motor 23 and 33, respectively. The compressors 21, 22 and 31, 32 driven by the motors 23, 33 pass through pipes provided inside the electric vehicles 2, 3 and the carriage 4, Via a bundle 5 of pipes providing a connection between them, the compressed air is delivered to the entire train set 1. Compressed air is used to allow operation of various members of the trainset, such as brakes, suspensions, doors, pantographs, chemical toilets, horns, and windscreen wipers.

Each power vehicle no longer includes a single compressor driven by one motor, but one motor 23, 33 and two compressors 21, 22 simultaneously driven by motors 23, 33. The trainset 1 of the present invention is distinguished from the trainset of the prior art in that it comprises an assembly of 31, 32). The compressors 21, 22, 31, 32 are all identical here, providing 11 KW of power and 9 or 10 bar of compressed air.

FIG. 2 shows an assembly of a motor 23 of the first power vehicle 2 and two compressors 21, 22, the expressions of which are to be described here with the motor 33 of the second power vehicle 3. It goes without saying that the same applies to the assembly of the two compressors 31 and 32, where they are equivalent.

Referring to FIG. 2, the compressors 21 and 22 are disposed on both sides of the motor 23. Here, each compressor 21, 22 comprises four compression heads 21 ′, 22 ′, respectively, which will be described in greater detail below. Each compressor 21, 22 includes shafts 21a, 22a mechanically connected to the heads 21 ′, 22 ′, so that when set to rotate they produce compressed air. Pulleys 21p and 22p are attached to the free ends of the shafts 21a and 22a of the compressors 21 and 22, respectively.

The motor 23 also includes a shaft 23a, and is attached to a free end of the shaft 23a with a pulley 23p arranged so as to be able to drive the dual pulley, that is, two belts to rotate at the same time. It may take the form of, for example, two disks fixedly attached to the shaft 23a of the motor 23, each comprising a groove for receiving the belt. The first belt 231 is mounted between the pulley 21p of the first compressor 21 and the double pulley 23p of the motor 23, and the second belt 232 is pulley of the second compressor 22. It is mounted between 22p and the double pulley 23p of the motor 23.

Thus, when the motor 23 is operating, that is, when the shaft 23a is rotating, it passes through the double pulley 23p and the belts 231 and 232 and the shafts 21a and 2 of the two compressors 21 and 22. Rotate 22a). Therefore, the single motor 23 allows the two compressors 21 and 22 to produce compressed air.

In the same way, the compressors 31, 32 of the second electric vehicle 3 produce compressed air thanks to the single motor 33, which is located between the two compressors 31, 32. Thanks to the two belts 331 and 332 which transmit the movement, they comprise heads 31 'and 32' which rotate the shaft.

Referring to FIG. 3, each of the compression heads 21 ′, 22 ′, 31 ′, and 32 ′ includes a cylinder 40 therein, in which a piston 41 slides. In order to convert the rotational movement of the shafts of the compressors 21, 22, 31, and 32 into the translational movement of the piston 41 in the cylinder 40, the piston 41 passes through the associated mechanism and the compressor ( Support the shafts 42 mechanically connected to the shafts 21, 22, 31, 32 and to the piston 41. The shaft 42 may preferably be a connecting rod.

On its outer surface, the piston 41 moves freely in the chamber 43 defined by the cylinder 40. At the outer end of this chamber 43, an inlet valve 44 and an outlet valve 45 are arranged. Thus, the movement of the piston 41 back and forth in the chamber 43 causes the intake through the inlet valve 44, the compression of the air, and then the discharge through the outlet valve 45. Thus compressed air is then transferred via the previously mentioned pipes in a manner well known to those skilled in the art.

This form of compressors 21, 22. 31, 32 with shafts and four compression heads 21 ′, 22 ′, 31 ′, 32 ′ is given only as an example and may be used in any type of compressor driven by a motor. Forms can also be used. In addition, because the art is well known to those skilled in the art, the description is no longer provided in detail.

In a preferred embodiment of the invention, the compressors 21, 22, 31 and 32 used are compressors using a technique called "dry-running piston", ie a technique in which the operation of the compressor does not require the use of lubricant. This type of compressor is well known to those skilled in the art to which the present technology pertains and can be adapted to the usage made by selecting a compressor. Moreover, the compressor does not necessarily include a compression head with a piston similar to that described fully, but may comprise a chamber with a rotary or other type of piston.

1 schematically depicts aspects of a preferred embodiment of the rail transport trainset of the present invention.

Figure 2 schematically shows the top of an assembly of one motor and two compressors driven by the motor in the power vehicle of the preferred embodiment of the railway transport trainset of the present invention.

Figure 3 schematically shows a part of the compression head of a compressor arranged in a preferred embodiment of the rail transport trainset of the present invention.

There are many advantages to the present invention.

First of all, replacing one compressor, for example, 22 kW, with two compressors, is achieved by installing two compressors with half the power, for example two 11 kW compressors. Such compressors occupy smaller sizes than the original compressors and can be removed from the power vehicle, in particular without having to remove the roof. Experience has shown that a one-hour compressor replacement can be reduced to one hour.

Moreover, a compressor commonly used is a compressor lubricated by an oil pump. These devices do not work correctly if there is a slope on the ground to which the railroad is attached. Therefore, in a train set, it is desirable to allow compressors to be used that use a "dry-running piston" technique in which the compressor operates without lubricant. An example of such a compressor is a compressor marketed by the company Tong Cheng Iron Works Co., Ltd, Taiwan, for example the model name is SDU-415.

However, since the power delivered by this type of compressor is not sufficient and is currently limited to 11 KW, such a technique has never been used in the railway field. However, with the present invention, it is possible for two 11 KW compressors, driven by one and the same motor, for example, to be arranged in a TGV power vehicle in which the compressor is to be delivered with 22 KW of power per electric vehicle. It is therefore possible to apply current dry-running piston compressor technology to trains, which provides a solution to the above-mentioned tilt problem. In addition, since no lubricant is used, it is possible to use a technology to protect the environment. Moreover, dry-running piston compressors have a longer service life than oil compressors.

The last advantage associated with the present invention deserves emphasis. By placing two compressors on both sides of the drive motor, Applicant emphasizes that the vibrations of the two compressors cancel each other out. Thus, the present invention makes it possible to move from a configuration with one large compressor and one motor to generate significant vibrations, from a configuration with two compressors and one motor whose vibrations cancel each other to a great extent. .

In either case, the use of an assembly of one motor and two compressors driven by the motor in each power vehicle offers many advantages. First of all, if one compressor fails, the other three can produce compressed air. In addition, the use of two 11KW compressors to produce 22KW of power makes it possible to apply the technology of dry-running piston compressors for a time limited to 11KW of power in the railway field. This low power compressor also has a smaller volume, which makes it possible to take them from a power vehicle without removing the roof as needed. Finally, by placing the two compressors 21, 22, 31, 32 on both sides of the single motor 23, 33, the vibrations associated with the operation of the compressors 21, 22, 31, 32 are significantly increased. Offset each other.

In order to be able to choose to drive only one compressor with the motor, it is possible to separate the compressors 21, 22, 31, 32 from the motors 23, 33, which may be useful in some applications. .

 Although the present invention has been described with respect to each assembly of one motor and two compressors embedded in a power vehicle, it goes without saying that the assembly or assemblies may be arranged in one or more carriages provided for this purpose.

Claims (8)

At least one power vehicle 2, 3; Members operating with compressed air; And an assembly of one motor and two compressors called " dry-running piston compressors " ((21, 22), (31, 32)) driven by the motors 23, 33 and producing compressed air. Means for producing compressed air comprising one; wherein the compressors (21, 22, 31, 32) of the assembly are arranged on both sides of the motors (23, 33), each compressor (21) 22 and 31 and 32 include drive shafts 21a and 22a to which pulleys 21p and 22p are attached, and motors 23 and 33 are drive shafts to which double pulley 23p is attached. 23a), and the pulleys 21p and 22p of the compressors (21, 22) and (31, 32) are connected to the motors 23 and 33 by the belts (231, 232, 331 and 332). A rail transport train set characterized in that it is connected to a double pulley (23p). delete delete The method of claim 1, The assembly is arranged in the power vehicle (2,3). 5. The method of claim 4, A railway transport trainset comprising two power vehicles (2,3) and one assembly disposed in each power vehicle (2,3). The method of claim 5, Each compressor (21, 22), (31, 32) is a rail transport train set, characterized in that to supply 11KW of power. An assembly of one motor (23, 33) and two compressors (21, 22, (31, 32)) designed for use in the railway transport train set of any one of claims 1, 4-6. . delete

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