A ventilation grille device and engineering machinery

Abstract

This utility model discloses a ventilation grille device and engineering machinery, including a front hood, on which a ventilation grille is provided. The ventilation grille includes a frame and multiple grille plates disposed inside the frame. The multiple grille plates are spaced apart in the vertical direction, and the length of the grille plates extends in the left and right directions. The plate surface of the grille plates faces forward and is inclined downward. A fine mesh is provided on the side of the ventilation grille near the inside of the front hood. The fine mesh is arranged behind the multiple grille plates and is attached to the multiple grille plates. The structural design of this utility model is reasonable. (1) The grille plates face forward (in the direction of vehicle movement) and are inclined downward. The grille plates resist the impact of coal dust and block most of the coal dust from entering the radiator. (2) The fine mesh attached to the back of the grille plates further blocks the coal dust, maintaining the heat dissipation effect and stability of the radiator for a long time. The downward and forward inclined grille plates are more likely to guide the coal dust to fall.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a ventilation grid device and engineering machinery. Background Technology

[0002] Bulldozer radiators are typically located at the front of the hood. When bulldozing coal at steep inclines (20-30°), coal dust often falls above the blades and onto the hood's ventilation grilles, gradually clogging them and severely impacting the overall machine's heat dissipation performance. Currently, the industry primarily uses two types of ventilation grilles:

[0003] Firstly, the honeycomb structure has larger pore sizes, making it easier for coal dust to pass through the honeycomb ventilation grid. It is necessary to add another layer of fine mesh inside to isolate the coal dust from the radiator. This causes the coal dust to get stuck between the two mesh layers. Moreover, in order to suppress micro-dust, a lot of water is usually sprayed on the coal dust, causing the coal dust to clump together larger and larger between the two mesh layers of the ventilation grid.

[0004] Secondly, the grille design (louvers) is designed to reduce the amount of hot air blown out by the fan and dust. The grille openings are tilted upwards and outwards. As long as coal dust falls onto the ventilation grille, it will naturally fall onto the radiator. The radiator air duct is very small, which can easily cause blockage of the radiator. In particular, the front fan will throw the incoming coal dust onto the radiator. Utility Model Content

[0005] The purpose of this utility model is to provide a ventilation grid device and engineering machinery to solve the problem of coal dust clogging the radiator when an electric bulldozer is pushing coal and raising it.

[0006] To achieve the above objectives, the present invention provides a ventilation grille device, including a front hood, on which a ventilation grille is provided. The ventilation grille includes a frame and a plurality of grille plates disposed inside the frame. The plurality of grille plates are spaced apart in a vertical direction, and the length of the grille plates extends in the left and right directions. The plate surface of the grille plates faces forward and is inclined downward. A fine mesh is provided on the side of the ventilation grille near the inside of the front hood. The fine mesh is arranged behind the plurality of grille plates and is in contact with the plurality of grille plates.

[0007] Furthermore, the grid plate is provided with a plurality of ventilation holes, which penetrate along the thickness direction of the grid plate.

[0008] Furthermore, several of the ventilation holes are configured as elongated holes, and the length direction of the ventilation holes is either perpendicular to or inclined to the length direction of the grid plate.

[0009] Furthermore, a reinforcing rib extending vertically is provided in the middle of the interior of the frame, and multiple grid plates are provided on the left and right sides of the reinforcing rib at intervals in the vertical direction. One end of the grid plate is connected to the reinforcing rib, and the other end of the grid plate is connected to the inner wall of the frame.

[0010] Furthermore, the grid plates on the left and right sides of the reinforcing rib are symmetrically arranged, with the length direction of several ventilation holes of the grid plate on the left side inclined to the lower left, and the length direction of several ventilation holes of the grid plate on the right side inclined to the lower right.

[0011] Furthermore, the front hood is provided with two ventilation grilles, which are distributed along the left and right sides. The side of the two ventilation grilles that are far apart from each other is installed with the front hood via a hinge assembly, and the side of the two ventilation grilles that are close to each other is installed with the front hood via a bolt assembly.

[0012] Furthermore, the hinge assembly includes hinge pins, with two hinge pins distributed vertically on the side of the two frames that are far apart from each other, and two bolt mounting holes distributed vertically on the side of the two frames that are close to each other.

[0013] Furthermore, the angle between the line connecting the lowest point of the previous grid plate and the highest point of the next grid plate and the horizontal plane is in the range of 5° to 25°.

[0014] Furthermore, an air intake fan is provided inside the front hood on the side near the vent grille.

[0015] This utility model also provides an engineering machinery, including an engineering machinery body and a ventilation grille device as described in any of the above technical solutions. The ventilation grille device is disposed on the engineering machinery body, and the front hood covers the radiator.

[0016] In summary, the technical solution of this utility model has the following beneficial effects: The structure of this utility model is reasonable. (1) By setting a front hood, the front hood is provided with a ventilation grille. The ventilation grille includes a frame and multiple grille plates set inside the frame. The multiple grille plates are set at intervals in the vertical direction. The length of the grille plates extends in the left and right directions. The plate surface of the grille plates is forward and downward. Thus, the grille plates are forward (in the direction of vehicle movement) and downward. The grille plates resist the impact of coal dust and block most of the coal dust from entering the radiator (i.e., in actual application, the radiator of the bulldozer is usually arranged in front of the front hood, and at this time the radiator is located behind the ventilation grille). (2) By setting a fine mesh on the side of the ventilation grille close to the inside of the front hood, the fine mesh is arranged behind the multiple grille plates and is attached to the multiple grille plates. Thus, the fine mesh attached to the back of the grille plates further blocks the coal dust, maintaining the heat dissipation effect and stability of the radiator for a long time (i.e., in actual application, the radiator is located behind the fine mesh). The downward and forward inclined grille plates are more likely to guide the coal dust to fall. Analysis shows that this invention can prevent coal dust from clogging the radiator when an electric bulldozer is pushing coal and raising it. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the ventilation grille device of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the ventilation grille of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the ventilation grille of this utility model;

[0020] Figure 4 It is along Figure 3 A schematic diagram of the cross-sectional structure cut by the AA section line;

[0021] Figure 5 yes Figure 4 A magnified view of a portion of region A;

[0022] Figure 6 This is a schematic diagram of the structure of the grid plate of this utility model;

[0023] Explanation of reference numerals in the attached drawings: front hood (1), vent grille (2), fine mesh (3), hinge assembly (4), bolt assembly (5), airflow direction (6); frame (201), grille (202), vent hole (203), reinforcing rib (204), bolt mounting hole (205); hinge pin (401). Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0025] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer above is designated as "up" and the observer below as "down." It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below," etc., used in this document to indicate orientation or positional relationships are based on the accompanying drawings and are solely for the purpose of clearly describing this utility model. They do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0026] See Figures 1 to 6 This embodiment provides a ventilation grille device, including a front cover 1, on which a ventilation grille 2 is provided. The ventilation grille 2 includes a frame 201 and a plurality of grille plates 202 disposed inside the frame 201. The plurality of grille plates 202 are arranged at intervals in the vertical direction, the length of the grille plates 202 extends in the left and right directions, and the plate surface of the grille plates 202 is forward and inclined downward. A fine mesh 3 is provided on the side of the ventilation grille 2 near the inside of the front cover 1. The fine mesh 3 is arranged behind the plurality of grille plates 202 and is attached to the plurality of grille plates 202. Functions: (1) By setting a front hood, the front hood is equipped with a ventilation grille, which includes a frame and multiple grille plates set inside the frame. The multiple grille plates are set at intervals in the vertical direction, and the length of the grille plates extends in the left and right directions. The plate surface of the grille plates is forward and downward. This makes the grille plates forward (in the direction of vehicle movement) and downward. The grille plates resist the impact of coal dust and block most of the coal dust from entering the radiator (i.e., in actual application, the radiator of the bulldozer is usually arranged in front of the front hood, and at this time the radiator is located behind the ventilation grille). (2) By setting a fine mesh on the side of the ventilation grille close to the inside of the front hood, the fine mesh is arranged behind the multiple grille plates and is attached to the multiple grille plates. This further blocks the coal dust by using the fine mesh attached to the back of the grille plates, maintaining the heat dissipation effect and stability of the radiator for a long time (i.e., in actual application, the radiator is located behind the fine mesh). The downward and forward tilted grille plates are more likely to guide the coal dust to fall. Analysis shows that this invention can prevent coal dust from clogging the radiator when an electric bulldozer is pushing coal and raising it.

[0027] Specifically, the grid plate 202 is provided with a number of ventilation holes 203, which extend along the thickness direction of the grid plate 202. Function: The ventilation holes 203 increase the airflow area, ensuring the heat dissipation effect of the radiator.

[0028] Specifically, several ventilation holes 203 are configured as elongated holes, with the length direction of the ventilation holes 203 perpendicular to or inclined to the length direction of the grid plate 202. Function: The elongated holes facilitate the grid plate 202 in blocking coal dust and increase the ventilation area.

[0029] Specifically, a vertically extending reinforcing rib 204 is provided in the middle of the interior of the frame 201. Multiple vertically spaced grid plates 202 are provided on both sides of the reinforcing rib 204. One end of each grid plate 202 is connected to the reinforcing rib 204, and the other end is connected to the inner wall of the frame 201. Function: The vertical reinforcing rib in the middle of the ventilation grid 2 improves the overall strength.

[0030] Specifically, the grid plates 202 on both sides of the reinforcing rib 204 are symmetrically arranged. Several vent holes 203 on the left grid plate 202 are inclined downwards and to the left along their length, while several vent holes 203 on the right grid plate 202 are inclined downwards and to the right along their length. Function: The symmetrical arrangement of the grid plates 202, with the vent holes 203 on both sides inclined in different directions, facilitates the grid plates 202 in resisting coal dust.

[0031] Specifically, the front hood 1 is equipped with two ventilation grilles 2, which are distributed horizontally. The sides of the two ventilation grilles 2 that are far apart from each other are installed with the front hood 1 via hinge assembly 4, while the sides of the two ventilation grilles 2 that are close to each other are installed with the front hood 1 via bolt assembly 5. Function: The ventilation grille device is divided into left and right parts for easy installation and maintenance; the installation methods are bolt installation and hinged installation. Bolt installation increases reliability, while hinged installation facilitates maintenance.

[0032] Specifically, the hinge assembly 4 includes hinge pins 401. Two hinge pins 401 are provided on the side of the two frames 201 that are far apart from each other, distributed vertically. Two bolt mounting holes 205 are provided on the side of the two frames 201 that are close to each other, distributed vertically. Function: The hinge pins 401 facilitate the hinge connection between the frame 201 and the front cover 1, while the bolt mounting holes 205 cooperate with the bolt assembly 5 to facilitate the fixed connection between the frame 201 and the front cover 1.

[0033] Specifically, the angle between the line connecting the lowest point of the previous grid plate 202 and the highest point of the next grid plate 202 and the horizontal plane is in the range of 5° to 25°. Function: The angle between the line connecting the lowest point of the previous grid plate and the highest point of the next grid plate and the horizontal plane (…) Figure 5 The α angle in the grid is in the range of 5 to 25°. This angle can withstand the impact of coal dust and make it easier for the grid plate to guide the coal dust to fall.

[0034] Specifically, an air intake fan is located inside the front hood 1 on the side near the vent grille 2. Function: See [link / reference needed] Figure 4The airflow direction 6 shows that the air duct direction is forward and backward, which can prevent dust from being stirred up by the airflow.

[0035] This utility model also provides an engineering machinery, including the engineering machinery body and a ventilation grille device according to any of the above technical solutions. The ventilation grille device is disposed on the engineering machinery body, and the front hood 1 covers the radiator. Function: The ventilation grille device of this utility model can be applied to electric bulldozers, that is, to form a high-protection ventilation grille device for electric bulldozers.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A screen device comprising a front hood (1), characterized in that: The front hood (1) is provided with a ventilation grille (2), the ventilation grille (2) includes a frame (201) and a plurality of grille plates (202) disposed inside the frame (201). The plurality of grille plates (202) are arranged at intervals in the vertical direction, the length of the grille plates (202) extends in the left and right directions, and the plate surface of the grille plates (202) is forward and inclined downward. A fine mesh (3) is provided on the side of the ventilation grille (2) near the inside of the front hood (1). The fine mesh (3) is arranged behind the plurality of grille plates (202) and is attached to the plurality of grille plates (202).

2. The screen device of claim 1, wherein: The grid plate (202) is provided with a plurality of ventilation holes (203), and the plurality of ventilation holes (203) penetrate along the thickness direction of the grid plate (202).

3. The screen device of claim 2, wherein: Several of the ventilation holes (203) are configured as elongated holes, and the length direction of the ventilation holes (203) is perpendicular to or inclined to the length direction of the grid plate (202).

4. The screen device of claim 3, wherein: The frame (201) has a reinforcing rib (204) extending vertically in the middle inside. On the left and right sides of the reinforcing rib (204), there are multiple grid plates (202) spaced vertically. One end of the grid plate (202) is connected to the reinforcing rib (204), and the other end of the grid plate (202) is connected to the inner wall of the frame (201).

5. The screen device of claim 4, wherein: The grid plates (202) on the left and right sides of the reinforcing rib (204) are symmetrically arranged. The length direction of several ventilation holes (203) of the grid plate (202) on the left side is inclined to the lower left, and the length direction of several ventilation holes (203) of the grid plate (202) on the right side is inclined to the lower right.

6. A ventilation grille device according to any one of claims 1 to 5, characterized in that: The front hood (1) is provided with two ventilation grilles (2), which are distributed along the left and right sides. The side of the two ventilation grilles (2) that is far apart from each other is installed with the front hood (1) through a hinge assembly (4), and the side of the two ventilation grilles (2) that is close to each other is installed with the front hood (1) through a bolt assembly (5).

7. The screen device of claim 6, wherein: The hinge assembly (4) includes a hinge pin (401), and two hinge pins (401) are provided on the side of the two frames (201) that are far apart from each other, and two bolt mounting holes (205) are provided on the side of the two frames (201) that are close to each other.

8. A screen assembly according to any one of claims 1 to 5, wherein: The line connecting the lowest point of the previous grid plate (202) and the highest point of the next grid plate (202) forms an angle between the line and the horizontal plane in the range of 5° to 25°.

9. A screen assembly according to any one of claims 1 to 5, wherein: An air intake fan is provided inside the front hood (1) on the side near the ventilation grille (2).

10. An engineering machinery, comprising an engineering machinery body, characterized in that: It also includes the ventilation grille device according to any one of claims 1 to 9, the ventilation grille device being disposed on the body of the engineering machinery, and the front hood (1) covering the radiator.

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