A ventilation grille for rail vehicles

Abstract

This invention discloses a ventilation grille for rail vehicles, comprising: an outer frame; a plurality of fan blades fixedly connected to the outer frame; a cover plate fixedly connected to the outer frame for securing the fan blades to the outer frame; and a cleaning assembly including a ventilation roller movably connected to the outer frame, the ventilation roller having a plurality of ventilation holes, at least one set of ventilation holes having their axial centerline facing the fan blades; and the ventilation roller having a ventilation port communicating with an external air source. The above-mentioned ventilation grille for rail vehicles has a reasonable structure, allowing for timely cleaning of dust on the fan blades; in the event of ice or snow blockage, it can be used for de-icing and snow removal operations, improving the heat dissipation performance of the ventilation grille.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and in particular to a ventilation grille for rail vehicles. Background Technology

[0002] Ventilation grilles are an important component of the integrated equipment compartment in rail vehicles. Except for the ventilation grilles, the area around the equipment in the lower part of the car is completely sealed. Therefore, the function of the ventilation grilles is to ensure heat exchange between the equipment and the outside environment during rail vehicle operation, meeting ventilation and heat dissipation requirements while also preventing rain, snow, and foreign objects from entering the equipment compartment, and meeting strength and rigidity requirements during high-speed operation.

[0003] In practical use, the existing ventilation grilles have the following two problems: 1. Dust accumulates on the fan blades of the ventilation grilles. When the dust reaches a certain thickness, it affects the heat dissipation performance of the ventilation grilles; 2. In the rainy and snowy weather of northern winters, the fan blades of the ventilation grilles will be blocked by ice and snow after the rail vehicles stop running, affecting the heat dissipation performance of the rail vehicles during the initial operation.

[0004] Therefore, it is necessary to improve the ventilation grilles for rail vehicles in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects in the prior art and provide a ventilation grille for rail vehicles that can clean dust from the fan blades in a timely manner; it can also perform de-icing and de-snowing operations when encountering ice and snow blockages, thereby improving the heat dissipation performance of the ventilation grille.

[0006] To achieve the above-mentioned technical effects, the technical solution of the present invention is: a ventilation grille for rail vehicles, comprising:

[0007] Outer frame;

[0008] The fan blades are provided in several parts and are fixedly connected to the outer frame;

[0009] A cover plate, fixedly connected to the outer frame, is used to fix the fan blade to the outer frame; a cleaning assembly includes a ventilation roller movably connected to the outer frame, the ventilation roller being provided with a plurality of ventilation holes, at least one set of the ventilation holes having their axial centerline facing the fan blade; the ventilation roller being provided with a ventilation port communicating with an external air source.

[0010] A preferred technical solution is that the ventilation roller is provided with a plurality of cleaning brushes, and the cleaning brushes are offset from the ventilation port.

[0011] A preferred technical solution is that the ventilation roller is provided with a plurality of ice-breaking components, and the ice-breaking components are offset from the ventilation port.

[0012] A preferred technical solution is that the ice-breaking component is a metal brush, which is composed of multiple elastic metal wires, which can be single wires, multiple wires, or spring wires; the cleaning brush is composed of multiple cleaning wires, which can be polymer material wires or fiber wires; the elastic metal wires are wrapped in the cleaning wires, or the elastic metal wires are intertwined with the cleaning wires, or the cleaning wires are wrapped in the elastic metal wires.

[0013] A preferred technical solution is that the side wall of the outer frame is provided with a sliding groove, the extension direction of the sliding groove is parallel to the length direction of the outer frame, a slider is slidably disposed in the sliding groove, and a first driving component for driving the slider to slide is disposed between the slider and the outer frame; the ventilation roller is connected to the slider.

[0014] A preferred technical solution is that the first driving component includes a lead screw rotatably disposed in the slide groove and a motor for driving the lead screw to rotate, wherein the axis of the lead screw is parallel to the extension direction of the slide groove; and the slider is threadedly connected to the lead screw.

[0015] A preferred technical solution is that the ventilation roller is rotatably connected to the slider, and a second driving component for driving the ventilation roller to rotate is provided between the ventilation roller and the outer frame.

[0016] A preferred technical solution is that the second drive component includes a gear disposed on the ventilation roller and a rack disposed on the outer frame, wherein the gear and the rack are meshed together.

[0017] A preferred technical solution is that the outer frame is provided with an air inlet, and an air vent is provided between the air inlet and the slide groove. The air inlet, the air vent, and the air vent are connected to each other. The air inlet is connected to an air vent pipe, and the air vent pipe is connected to a negative pressure pipe and a hot air pipe through a three-way valve.

[0018] A preferred technical solution is that the outer frame is provided with an electrical contact that is electrically connected to the rail vehicle, and the electrical contact is electrically connected to the motor.

[0019] A preferred technical solution is that the ice-breaking component includes a metal spring connected to the ventilation roller, the metal spring is wound around the cleaning brush, and an adjustment component is provided between the metal spring and the ventilation roller for laying the cleaning brush down and bringing the metal spring into contact with the ice and snow.

[0020] A preferred technical solution is that the adjusting component includes a rotating shaft rotatably disposed within the ventilation roller, and the end of the metal spring is connected to the rotating shaft by a connecting rope, the connecting rope being threaded through the ventilation hole.

[0021] A preferred technical solution is that a locking component for locking the position of the rotating shaft is provided between the rotating shaft and the ventilation roller.

[0022] A preferred technical solution is that the locking component includes a locking hole disposed on the ventilation roller and an elastic plate disposed on the rotating shaft. The elastic plate is provided with a protrusion that limits and cooperates with the locking hole, and a plurality of locking holes are disposed along the circumference of the ventilation roller.

[0023] A preferred technical solution further includes a key post for driving the rotating shaft to rotate. A groove and a protrusion are provided between the rotating shaft and the key post for limiting and cooperating. The groove has a non-circular cross-section. The key post is inserted and cooperates with the ventilation roller and the air inlet.

[0024] A preferred technical solution is that the key post is provided with a pressing surface for pressing the elastic plate against the rotating shaft.

[0025] A preferred technical solution is that the key post is provided with a pull ring that facilitates its rotation and removal.

[0026] A preferred technical solution is that the ventilation roller is a metal rod.

[0027] The advantages and beneficial effects of this invention are as follows: The ventilation grille for rail vehicles has a reasonable structure. By setting a ventilation roller with ventilation holes, air can be sent to the ventilation roller to blow away the fan blades, or negative pressure can be used to suck up dust, thus achieving the purpose of timely cleaning of dust on the fan blades. When the fan blades are covered by ice and snow, hot air can be sent to the ventilation roller to melt the ice and snow, maintaining the ventilation effect of the ventilation grille. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the ventilation grille for rail vehicles of the present invention;

[0029] Figure 2 yes Figure 1 An explosion diagram;

[0030] Figure 3 This is a structural diagram of the outer frame;

[0031] Figure 4 It is a sectional view of the outer frame;

[0032] Figure 5 This is a schematic diagram of the ventilation roller structure;

[0033] Figure 6 It is a cross-sectional view of the cleaning brush connected to the elastic metal wire;

[0034] Figure 7This is a schematic diagram of the cleaning assembly of Embodiment 2 of the ventilation grille for rail vehicles of the present invention;

[0035] Figure 8 yes Figure 7 An explosion diagram;

[0036] Figure 9 This is a schematic diagram of a metal spring breaking through ice and snow.

[0037] Figure 10 This is a schematic diagram of the rotating shaft;

[0038] Figure 11 This is a structural diagram of the key post;

[0039] Figure 12 This is a schematic diagram showing the engagement of the key post and the pivot.

[0040] In the diagram: 1. Outer frame; 11. Slide groove; 12. Slider; 13. Lead screw; 14. Motor; 15. Rack; 16. Air inlet; 17. Ventilation groove; 18. Electrical contact; 2. Fan blade; 3. Cover plate; 4. Ventilation roller; 41. Ventilation hole; 42. Ventilation port; 43. Gear; 44. Locking hole; 5. Cleaning wire; 6. Elastic metal wire; 7. Metal spring; 71. Connecting rope; 8. Shaft; 81. Elastic plate; 82. Protrusion; 83. Groove; 9. Key post; 91. Protruding post; 92. Pressing surface; 93. Pull ring. Detailed Implementation

[0041] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0042] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, 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 of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Example 1

[0044] like Figure 1-6 As shown, the ventilation grille for rail vehicles in Embodiment 1 includes:

[0045] Outer frame 1;

[0046] Fan blades 2 are provided in several parts and are fixedly connected to the outer frame 1;

[0047] The cover plate 3 is fixedly connected to the outer frame 1 and is used to fix the fan blade 2 in the outer frame 1;

[0048] The cleaning assembly includes a ventilation roller 4 movably connected to the outer frame 1. The ventilation roller 4 is provided with a plurality of ventilation holes 41, and at least one set of ventilation holes 41 is oriented toward the fan blade 2. The ventilation roller 4 is provided with a ventilation port 42 that communicates with an external air source.

[0049] With this design, the fan blades 2 are cleaned by supplying air to the ventilation roller 4 or by suctioning air under negative pressure. When the fan blades 2 are covered by ice and snow, hot air is supplied to the ventilation roller 4 to melt the ice and snow, thus ensuring the ventilation performance of the ventilation grille.

[0050] The ventilation roller 4 is provided with a number of cleaning brushes, which are offset from the ventilation port 42.

[0051] With this design, the cleaning brush can clean the surface of the fan blade 2, further improving the dust removal effect.

[0052] The ventilation roller 4 is provided with a number of ice-breaking components, which are offset from the ventilation port 42.

[0053] With this design, as the ventilation roller 4 moves within the outer frame 1, the ice-breaking component can break up the ice and snow attached to the fan blades 2, improving the snow and ice removal effect.

[0054] The ice-breaking component is a metal brush, which is composed of multiple elastic metal wires 6, wherein the elastic metal wires are single wires, multiple wires, or spring wires; the cleaning brush is composed of multiple cleaning filaments 5, wherein the cleaning filaments 5 are polymer material filaments or fiber filaments; the elastic metal wires 6 are wrapped in the cleaning filaments 5, or the elastic metal wires 6 are intertwined with the cleaning filaments 5, or the cleaning filaments 5 are wrapped in the elastic metal wires 6.

[0055] This design improves the strength of the cleaning brush 5.

[0056] The outer frame 1 has a sliding groove 11 on its side wall. The extension direction of the sliding groove 11 is parallel to the length direction of the outer frame 1. A slider 12 is slidably disposed in the sliding groove 11. A first driving component for driving the slider 12 to slide is disposed between the slider 12 and the outer frame 1. The ventilation roller 4 is connected to the slider 12.

[0057] This design achieves the purpose of driving the ventilation roller 4 to slide, thereby improving the cleaning effect of the ventilation roller 4.

[0058] The first drive assembly includes a lead screw 13 rotatably disposed in the slide groove 11 and a motor 14 for driving the lead screw 13 to rotate. The axis of the lead screw 13 is parallel to the extension direction of the slide groove 11. The slider 12 is threadedly connected to the lead screw 13.

[0059] The ventilation roller 4 is rotatably connected to the slider 12, and a second driving component for driving the ventilation roller 4 to rotate is provided between the ventilation roller 4 and the outer frame 1.

[0060] With this design, the ventilation roller 4 can rotate around its central axis while sliding, thus improving the cleaning effect of the sweeping brush 5.

[0061] The second drive assembly includes a gear 43 disposed on the ventilation roller 4 and a rack 15 disposed on the outer frame 1, wherein the gear 43 and the rack 15 are meshed together.

[0062] The ventilation roller 4 rotates when it slides through the meshing of gears and racks.

[0063] The outer frame 1 is provided with an air inlet 16, and an air vent 17 is provided between the air inlet 16 and the slide groove 11. The air inlet 16, the air vent 17 and the air vent 42 are connected.

[0064] With this design, the air inlet 42 can be connected to the air source regardless of where the air roller 4 is located.

[0065] The outer frame 1 is provided with an electrical contact 18 that is electrically connected to the rail vehicle, and the electrical contact 18 is electrically connected to the motor 14.

[0066] With this design, when the outer frame 1 is installed on the rail vehicle, the energized contact 18 can be electrically connected to the corresponding contact point of the rail vehicle, thereby achieving the purpose of supplying power to the motor 14.

[0067] The usage of Example 1 is as follows: the motor 14 drives the lead screw 13 to rotate, the slider 12 slides, and drives the ventilation roller 4 to move. Due to the meshing of the gear 43 and the rack 15, the ventilation roller 4 rotates while moving. The cleaning brush 5 cleans the fan blade 2. The external air source applies negative pressure to the ventilation roller 4 to suck up the dust from the ventilation hole 41.

[0068] When ice and snow removal operations are required, the external air source blows hot air onto the ventilation roller 4, and the elastic metal wire 6 increases the strength of the cleaning brush 5. The hot air melts the ice while the cleaning brush 5 breaks the ice.

[0069] Example 2

[0070] like Figure 7-12 As shown, Example 2 is based on Example 1, with the following differences:

[0071] The ice-breaking component includes a metal spring 7 connected to the ventilation roller 4. The metal spring 7 is wound around the cleaning brush 5. An adjustment component is provided between the metal spring 7 and the ventilation roller 4 for laying the cleaning brush 5 down and bringing the metal spring 7 into contact with the ice and snow.

[0072] With this design, the metal spring 7 can directly contact the ice and snow, using its hardness to break the ice. The metal spring 7 also melts ice when heated. In scenarios requiring ice breaking, the cleaning wire is ineffective, primarily because it is made of a material with poor thermal conductivity. In this application, the metal spring wire is 30%-60% the length of the cleaning wire. When breaking ice, bending the metal spring wire allows the useless cleaning wire to be collected on the surface of the ventilation roller 4. The metal spring wire, with its high thermal conductivity, directly contacts the ice and snow, quickly transferring heat from the ventilation roller to the surface and improving ice breaking efficiency.

[0073] The adjustment assembly includes a rotating shaft 8 rotatably disposed within the ventilation roller 4, and the end of the metal spring 7 is connected to the rotating shaft 8 by a connecting rope 71, which passes through the ventilation hole 41.

[0074] With this design, the rotating shaft 8 is rotated, and the connecting rope 71 is wound around the rotating shaft 8. The length of the connecting rope 71 is reduced, which pulls the metal spring 7 into a bend. The cleaning brush 5 is then driven to bend, preventing it from contacting the ice and snow.

[0075] A locking component for locking the position of the rotating shaft 8 is provided between the rotating shaft 8 and the ventilation roller 4.

[0076] This design achieves the goal of fixing the metal spring 7 at the ice-breaking position.

[0077] The locking assembly includes a locking hole 44 disposed on the ventilation roller 4 and an elastic plate 81 disposed on the rotating shaft 8. The elastic plate 81 is provided with a protrusion 82 that limits and cooperates with the locking hole 44. A plurality of locking holes 44 are provided along the circumference of the ventilation roller 4.

[0078] With this design, the protrusion 82 is confined in the locking hole 44, which achieves the purpose of locking the position of the rotating shaft 8 and prevents the rotating shaft 8 from rotating under the action of the restoring force of the metal spring 7.

[0079] It also includes a key post 9 for driving the rotating shaft 8 to rotate. A groove 83 and a protrusion 91 are provided between the rotating shaft 8 and the key post 9 to limit each other. The cross section of the groove 83 is not circular. The key post 9 is inserted into the ventilation roller 4 and the air inlet 16.

[0080] With this design, when the rail vehicle stops, the ventilation roller is moved to the same axis as the air inlet 16. Using the air inlet 16, the key pin 9 is inserted into the air inlet 16 and the ventilation roller 4. The protrusion 91 and the groove 83 are matched for limiting. Rotating the key pin 9 can achieve the purpose of rotating the shaft 8. After the shaft 8 is rotated to the correct position, the key pin 9 is pulled out to restore the air inlet 16 to the external air source.

[0081] The key post 9 is provided with a pressing surface 92 for pressing the elastic plate 81 against the rotating shaft 8.

[0082] With this design, as the key post 9 is inserted, the collateral surface 92 presses down the elastic plate 81, and the protrusion 82 disengages from the locking hole 44, at which point the rotating shaft 8 can be rotated.

[0083] The key post 9 is provided with a pull ring 93 for easy rotation and removal.

[0084] This design improves the ease of turning and inserting / removing the key post 9.

[0085] The ventilation roller 4 is a metal rod.

[0086] This design further improves the efficiency of hot air heat transfer and enhances the ice-breaking effect.

[0087] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A ventilation grille for rail vehicles, characterized in that, include: Outer frame (1); The fan blades (2) are provided in several parts and are fixedly connected to the outer frame (1); The cover plate (3) is fixedly connected to the outer frame (1) and is used to fix the fan blade (2) in the outer frame (1); The cleaning assembly includes a ventilation roller (4) movably connected to the outer frame (1), the ventilation roller (4) being provided with a plurality of ventilation holes (41), at least one set of the ventilation holes (41) having their axial centerlines facing the fan blade (2); the ventilation roller (4) being provided with a ventilation port (42) communicating with an external air source. The ventilation roller (4) is provided with a plurality of cleaning brushes, which are offset from the ventilation port (42); The ventilation roller (4) is provided with a plurality of ice-breaking parts, which are offset from the ventilation port (42); The vent (42) is connected to the hot air duct; The ice-breaking component includes a metal spring (7) connected to the ventilation roller (4), the metal spring (7) is wound around the cleaning brush, and an adjustment component is provided between the metal spring (7) and the ventilation roller (4) for laying the cleaning brush down and bringing the metal spring (7) into contact with the ice and snow. The adjustment assembly includes a rotating shaft (8) rotatably disposed within the ventilation roller (4), and the end of the metal spring (7) is connected to the rotating shaft (8) by a connecting rope (71), which passes through the ventilation hole (41). A locking component for locking the position of the rotating shaft (8) is provided between the rotating shaft (8) and the ventilation roller (4).

2. The ventilation grille for rail vehicles according to claim 1, characterized in that, The outer frame (1) has a sliding groove (11) on its side wall. The extension direction of the sliding groove (11) is parallel to the length direction of the outer frame (1). A slider (12) is slidably disposed in the sliding groove (11). A first driving component for driving the slider (12) to slide is disposed between the slider (12) and the outer frame (1). The ventilation roller (4) is connected to the slider (12).

3. The ventilation grille for rail vehicles according to claim 2, characterized in that, The first drive assembly includes a lead screw (13) rotatably disposed in the slide (11) and a motor (14) for driving the lead screw (13) to rotate. The axis of the lead screw (13) is parallel to the extension direction of the slide (11). The slider (12) is threadedly connected to the lead screw (13).

4. The ventilation grille for rail vehicles according to claim 3, characterized in that, The ventilation roller (4) is rotatably connected to the slider (12), and a second drive assembly for driving the ventilation roller (4) to rotate is provided between the ventilation roller (4) and the outer frame (1).

5. The ventilation grille for rail vehicles according to claim 4, characterized in that, The second drive assembly includes a gear (43) disposed on the ventilation roller (4) and a rack (15) disposed on the outer frame (1), wherein the gear (43) and the rack (15) are meshed together.

6. The ventilation grille for rail vehicles according to claim 2, characterized in that, The outer frame (1) is provided with an air inlet (16), and an air vent (17) is provided between the air inlet (16) and the slide groove (11). The air inlet (16), the air vent (17) and the air vent (42) are connected. The air inlet (16) is connected to an air vent pipe, and the air vent pipe is connected to a negative pressure pipe and a hot air pipe through a three-way valve.

7. The ventilation grille for rail vehicles according to claim 3, characterized in that, The outer frame (1) is provided with an energized contact (18) that is electrically connected to the rail vehicle, and the energized contact (18) is electrically connected to the motor (14).

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