Locomotive connecting air duct

Abstract

The utility model belongs to the technical field of locomotive manufacturing, and discloses a locomotive connecting air duct. The air duct comprises an air duct body, the air duct body comprises a first connecting section and a second connecting section, the first connecting section is cylindrical, the first connecting section is connected to an outlet pipe of an air collection tank in an inserted mode, and the second connecting section is connected to a ventilator and is made of flexible materials; the problem that in the prior art, a locomotive connecting air duct is large in occupied space or large in air inlet resistance is solved.

Description

Technical Field

[0001] This utility model relates to the field of locomotive manufacturing technology, and in particular to a locomotive connecting air duct. Background Technology

[0002] Modern locomotive ventilation systems employ independent ventilation and cooling technology. In this system, each ventilation branch independently draws air from outside the locomotive, and the various systems operate relatively independently without interfering with each other. The general route of each branch is as follows: after outside air enters the locomotive's ventilation unit, it is transported to the cooling equipment and finally exhausted outside the locomotive.

[0003] Most existing locomotive ventilation fans use the roof cover (top surface or sloping surface) for air intake. The air intake of the ventilation unit needs to be connected to the roof cover. One current connection method is through multiple metal duct flanges. In this method, the locomotive roof cover and the ventilation fan are connected by 2-3 metal ducts, which are connected by flanges and gaskets. The elongated holes of each duct flange provide an adjustment margin to ensure the sealing between the ducts and between the ducts and the fan. During the installation of the ventilation unit, installation errors may occur, exceeding the adjustment margin of the elongated holes, resulting in gaps in the metal ducts. In addition, the above installation method requires a large installation space between the locomotive roof cover and the ventilation unit, which places certain requirements on the air arrangement inside the locomotive. Another method of sealing the locomotive roof cover and the ventilation unit is to weld an annular flat flange to the roof cover, and install a sponge rubber strip on the top of the ventilation fan. The flange is pressed directly onto the fan's sponge rubber strip. To ensure a tight seal, the flange width is usually 2-3 times the width of the top cover sponge rubber strip. However, due to the use of a wider annular flange shape, the fan inlet will be partially obstructed regardless of which direction the fan unit and flange are offset from, increasing the air intake resistance of the ventilation system and affecting its heat dissipation performance. Utility Model Content

[0004] The purpose of this utility model is to provide a locomotive connection air duct that solves the problems of large space occupation or large air intake resistance in the existing locomotive connection air duct.

[0005] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a preferred embodiment comprising a duct body, the duct body comprising a first connecting section and a second connecting section, the first connecting section being cylindrical and inserted into the outlet pipe of the air collection box, the second connecting section being connected to a ventilator, and the second connecting section being made of a flexible material.

[0006] Preferably, a second flange is provided on the side of the second connecting section away from the first connecting section, and a first flange is formed on the ventilator. The first flange and the second flange are mated together. A first through hole is formed on the first flange, and a second through hole is formed on the second flange. Bolts pass through the first through hole and the second through hole and are then tightened with nuts.

[0007] Preferably, the outer wall of the first connecting section is coated with structural adhesive, and the first connecting section is bonded to the inner wall of the outlet pipe.

[0008] Preferably, the axial cross-section of the second connecting segment is wavy.

[0009] Preferably, the hardness of the first connecting segment is greater than the hardness of the second connecting segment.

[0010] Preferably, a steel wire is threaded through the bend of the second connecting section.

[0011] Preferably, a sealing gasket is sandwiched between the first flange and the second flange.

[0012] Preferably, the sealing gasket is made of rubber.

[0013] Preferably, at least two sets of bolts are installed.

[0014] Preferably, the second connecting segment is provided with pleats.

[0015] Beneficial effects: By replacing the main body of the locomotive connecting air duct with a flexible structure, even if there is a deviation in the installation position between the air collection box outlet pipe on the top cover and the ventilator, the deviation can be eliminated by the deformation of the second connecting section, so that the outlet pipe and the ventilator can be connected through the locomotive connecting air duct without gaps, reducing the difficulty of connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation of the locomotive connection air duct of this utility model;

[0017] Figure 2 This is a cross-sectional view of the locomotive connection air duct of this utility model.

[0018] In the diagram: 1. Main body of the air duct; 11. First connecting section; 12. Second connecting section; 13. Second flange; 14. Second through hole; 2. Outlet pipe; 3. Ventilator; 31. First flange; 4. Steel wire; 5. Sealing gasket; 6. Bolt. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0023] In the current technology, the air collection box is generally installed on the top cover of the locomotive, with an inlet on the top cover. Airflow enters through the inlet and flows out through the outlet pipe of the air collection box, entering the ventilation fan. The outlet pipe and the ventilation fan are generally connected by multiple sections of metal pipe. During the installation of the metal pipe, it is easy to encounter problems. If the error exceeds the adjustment margin of the elongated hole on the metal pipe, the metal pipe will not be able to be connected. If the connection is made by pressing the sponge with a flange, the cross-sectional area of ​​the air intake channel will be reduced, resulting in a decrease in the air intake volume of the ventilation fan.

[0024] To solve the above problems, such as Figures 1 to 2As shown, this utility model provides a locomotive connection air duct, including an air duct body 1. The air duct body 1 includes a first connecting section 11 and a second connecting section 12. The first connecting section 11 is cylindrical and is inserted into the outlet pipe 2 of the air collection box. The second connecting section 12 is connected to the ventilator 3 and is made of flexible material.

[0025] The main body 1 of this utility model of the air duct includes two parts, wherein the first connecting section 11 is directly inserted and fixed to the outlet pipe 2, and the second connecting section 12 is installed on the fan 3. The first connecting section 11 and the second connecting section 12 are integrally formed. The second connecting section 12 is made of flexible material. When there is a deviation in the installation of the fan 3 or when an upward deflection is reserved for the fan 3, the outlet pipe 2 and the fan 3 can still be connected by the deformation of the second connecting section 12. Furthermore, there will be no gaps or deviations at the interface positions at both ends of the air duct main body 1. In addition, the second connecting section 12 replaces multiple metal pipes for connection, which also reduces the installation difficulty.

[0026] A second flange 13 is provided on the side of the second connecting section 12 away from the first connecting section 11. A first flange 31 is formed on the fan 3. The first flange 31 and the second flange 13 are mated together. A first through hole is formed on the first flange 31, and a second through hole 14 is formed on the second flange 13. Bolts 6 pass through the first through hole and the second through hole 14 and are tightened with nuts. At least two sets of bolts 6 are installed in a symmetrical manner on the circumference of the first flange 31 and the second flange 13, so as to fix and stably connect the first flange 31 and the second flange 13.

[0027] The second connecting section 12 of the connecting duct of this utility model is still connected to the first flange 31 on the ventilator 3 through the second flange 13. Since the second connecting section 12 is made of flexible material, the first flange 31 and the second flange 13 can always be connected through the deformation of the second connecting section 12, and there will be no misalignment phenomenon. This will narrow the flow channel in the locomotive connecting duct, so that the air flow inside the locomotive connecting duct will not decrease during the flow process, and a high air volume can be maintained to achieve the ventilation and cooling effect.

[0028] The outer wall of the first connecting section 11 is coated with structural adhesive. The first connecting section 11 is bonded to the inner wall of the outlet pipe 2. The diameter of the first connecting section 11 is smaller than the diameter of the outlet pipe 2. The first connecting section 11 is directly inserted into the inside of the outlet pipe 2 and then bonded with high-strength structural adhesive. By bonding, the height required for flange fixing can be saved, and the height requirement for installing the locomotive connection air duct can be reduced, allowing the locomotive connection air duct to adapt to a lower installation space.

[0029] If there is sufficient space at the installation height, the first connecting section 11 and the outlet pipe 2 can also be fixed by means of flange connection.

[0030] The axial cross-section of the second connecting section 12 is wavy, resembling an accordion structure, or it can be a pleated structure. Through the aforementioned wavy or pleated shape, the second connecting section 12 can freely extend and retract in the length direction to adapt to locomotive spaces of different heights. At the same time, both ends of the second connecting section 12 can move freely laterally and longitudinally, and can also be adjusted vertically. The second connecting section 12 can connect the outlet pipe 2 at different installation positions to the ventilator 3, and overcome the installation error of the ventilator 3 through its own deformation.

[0031] The first connecting section 11 has a higher hardness than the second connecting section 12. Both the first connecting section 11 and the second connecting section 12 are made of rubber, which can absorb vibration and improve sealing performance.

[0032] To prevent the material of the second connecting section 12 from being too soft, a steel wire 4 is inserted at the bend of the wavy section of the second connecting section 12. By setting the steel wire 4, the rigidity of the second connecting section 12 can be strengthened, and the second connecting section 12 can withstand the airflow intensity inside it, so as to prevent it from being blown apart by the airflow.

[0033] A gasket 5 is sandwiched between the first flange 31 and the second flange 13. By setting the gasket 5, the sealing capacity between the first flange 31 and the second flange 13 can be increased, the airtightness can be improved, and the gas leakage in the locomotive connection air duct can be prevented. The gasket 5 is usually made of rubber.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A locomotive connecting air duct, characterized in that, The system includes a main body of the air duct (1), which includes a first connecting section (11) and a second connecting section (12). The first connecting section (11) is cylindrical and is inserted into the outlet pipe (2) of the air collection box. The second connecting section (12) is connected to the ventilator (3) and is made of flexible material.

2. The locomotive connecting air duct according to claim 1, characterized in that, A second flange (13) is provided on the side of the second connecting section (12) away from the first connecting section (11). A first flange (31) is formed on the ventilator (3). The first flange (31) and the second flange (13) are connected to each other. A first through hole is formed on the first flange (31), and a second through hole (14) is formed on the second flange (13). The bolt (6) passes through the first through hole and the second through hole (14) and is then fastened to the nut.

3. The locomotive connecting air duct according to claim 1, characterized in that, The outer wall of the first connecting section (11) is coated with structural adhesive, and the first connecting section (11) is bonded to the inner wall of the outlet pipe (2).

4. The locomotive connecting air duct according to claim 1, characterized in that, The axial cross section of the second connecting segment (12) is wavy.

5. The locomotive connecting air duct according to claim 1, characterized in that, The hardness of the first connecting segment (11) is greater than that of the second connecting segment (12).

6. The locomotive connecting air duct according to claim 4, characterized in that, A steel wire (4) is threaded through the bend of the second connecting section (12).

7. The locomotive connecting air duct according to claim 2, characterized in that, A sealing gasket (5) is sandwiched between the first flange (31) and the second flange (13).

8. The locomotive connecting air duct according to claim 7, characterized in that, The sealing gasket (5) is made of rubber.

9. The locomotive connecting air duct according to claim 2, characterized in that, At least two sets of the bolts (6) are installed.

10. The locomotive connecting air duct according to claim 1, characterized in that, The second connecting segment (12) is provided with pleats.

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