Ventilation and noise reduction structure of loader hood door

Abstract

The utility model belongs to the technical field of engineering mechanical equipment, and particularly relates to a loader hood door ventilation and noise reduction structure which comprises hood doors arranged on the two sides of a loader, a plurality of heat dissipation ventilation holes are formed in the hood doors, and the inner sides of the hood doors are fixedly connected with noise reduction flow guide plates through inner attached frameworks. A plurality of noise reduction ventilation holes are formed in the noise reduction flow guide plate; and the noise reduction ventilation holes in the noise reduction flow guide plate and the heat dissipation ventilation holes in the hood door are mutually staggered. According to the utility model, the noise reduction guide plate is arranged at the position of the heat dissipation ventilation hole of the hood door, so that the heat dissipation ventilation function can be maintained to ensure the heat balance of equipment, and the noise reduction function can be added to reduce the noise radiation.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery equipment, and particularly relates to a ventilation and noise reduction structure for a loader hood door. Background Technique

[0002] Loader products are suitable for a variety of operating conditions, and the operating sites are flexible and changeable. Loader products are often used in engineering projects near urban and rural streets and residential areas. According to the construction period limit, the machines operate day and night without stopping. Citizens often report that the noise of loaders disturbs the residents. Therefore, continuously reducing the external noise radiation of loader products and producing environmentally friendly products are urgent problems that need to be solved by each equipment manufacturer.

[0003] The main noise source of the external noise radiation of the loader is the noise generated by the engine system. The components of the engine system are all assembled inside the engine hood of the whole machine. However, due to the need for ventilation and heat dissipation of the engine system, a considerable number of heat dissipation and ventilation holes need to be reserved on both sides of the hood door to ensure the thermal balance of the whole machine during operation and ensure the normal operation of the loader product. During the operation process, these heat dissipation and ventilation holes will form noise radiation to the outside of the machine, making it difficult to ensure that the machine noise meets the limit requirements in the local environment. The equipment is often ordered to stop for rectification due to high equipment noise, which affects the project period and brings considerable problems to the construction party and the equipment manufacturer, etc. Content of the Utility Model

[0004] The purpose of the utility model is to solve the technical problems existing in the background technique. Therefore, a ventilation and noise reduction structure for a loader hood door is provided, which adds a noise reduction guide plate, can not only enable the air flow inside and outside the engine hood door to pass smoothly, thereby stabilizing the thermal balance of the system, but also greatly reduce the external noise radiation.

[0005] In order to achieve the above purpose, the technical solutions adopted by the utility model are as follows:

[0006] A ventilation and noise reduction structure for a loader hood door, including hood doors arranged on both sides of the loader. A plurality of heat dissipation and ventilation holes are opened on the hood door. The inner side of the hood door is fixedly connected with a noise reduction guide plate through an inner attached skeleton. Among them, the hood door is fixedly connected with the inner attached skeleton, and the inner attached skeleton is fixedly connected with the noise reduction guide plate. A plurality of noise reduction ventilation holes are opened on the noise reduction guide plate. The noise reduction ventilation holes on the noise reduction guide plate are staggered from the heat dissipation and ventilation holes on the hood door.

[0007] The following is a further limited technical solution of the utility model. The heat dissipation and ventilation holes are set to be circular, and the noise reduction ventilation holes are set to be oval.

[0008] The following is a further defined technical solution of the present utility model. The area of the region formed by a plurality of noise reduction ventilation holes on the noise reduction flow guiding plate is larger than the area of the region formed by a plurality of heat dissipation ventilation holes on the hood door.

[0009] The following is a further defined technical solution of the present utility model. The noise reduction flow guiding plate is welded to the internal attached skeleton, and a spacing is provided between the noise reduction flow guiding plate and the hood door, and the internal attached skeleton is welded to the hood door.

[0010] The following is a further defined technical solution of the present utility model. The hood doors are symmetrically arranged on both sides of the loader.

[0011] Compared with the prior art, the present utility model has the following technical effects:

[0012] By installing a noise reduction flow guiding plate at the position of the heat dissipation ventilation holes of the hood door, the present utility model can not only maintain the heat dissipation ventilation function to ensure the thermal balance of the equipment, but also increase the noise reduction function to reduce the noise radiation.

[0013] The following further describes the present utility model in conjunction with the drawings and embodiments. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is the top view structural schematic diagram of the present utility model;

[0017] Figure 3 is the front view structural schematic diagram of the present utility model after removing the noise reduction flow guiding plate;

[0018] Figure 4 is the front view structural schematic diagram of the noise reduction flow guiding plate in the present utility model.

[0019] Reference numerals: 1, hood door; 2, internal attached skeleton; 3, noise reduction flow guiding plate. Detailed Embodiments

[0020] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0022] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0023] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0024] As Figures 1-4 shown, a ventilation and noise reduction structure for the loader hood door is provided, which includes a hood door 1, an internal attached skeleton 2, and a noise reduction and diversion plate 3.

[0025] The hood doors 1 are symmetrically arranged on both sides of the loader.

[0026] The internal attached skeleton 2 is welded to the hood door 1; the noise reduction and flow guiding plate 3 is welded to the internal attached skeleton 2, and there is a spacing between the noise reduction and flow guiding plate 3 and the hood door 1, and the spacing is the thickness of the internal attached skeleton 2. It should be noted that for the convenience of disassembly and assembly of the overall structure, screws can be used for installation and fixation. Specifically: the noise reduction and flow guiding plate 3 is fixedly installed on the internal attached skeleton 2 through screws, and the internal attached skeleton 2 is fixedly installed on the hood door 1 through screws. Therefore, the installation structure with portable disassembly and assembly using screws is also within the protection scope of the present utility model.

[0027] A plurality of heat dissipation ventilation holes are provided on the hood door 1, and a plurality of noise reduction ventilation holes are provided on the noise reduction and flow guiding plate 3. Among them, the heat dissipation ventilation holes are set as circular, and the noise reduction ventilation holes are set as elliptical.

[0028] The noise reduction ventilation holes on the noise reduction and flow guiding plate 3 are staggered from the heat dissipation ventilation holes on the hood door 1, so that the hot air flow and sound wave flow generated during the operation of the loader form a zigzag, interfering with the sound waves, thereby achieving the function of noise reduction. Therefore, the product of the present utility model can not only dissipate heat to ensure the thermal balance of the equipment, but also greatly reduce the external radiation noise of the whole machine.

[0029] Furthermore, the area of the region formed by the plurality of noise reduction ventilation holes on the noise reduction and flow guiding plate 3 is larger than the area of the region formed by the plurality of heat dissipation ventilation holes on the hood door 1, so as to ensure the noise reduction coverage rate.

[0030] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present utility model. Therefore, all equivalent changes made according to the shape, structure and principle of the present utility model without departing from the content of the technical solution of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A loader hood door ventilation and noise reduction structure, comprising hood doors (1) arranged on both sides of the loader, wherein the hood doors (1) are provided with a plurality of heat dissipation ventilation holes, and characterized in that: The inner side of the hood door (1) is fixedly connected to the noise reduction deflector plate (3) via an internally attached frame (2), wherein the hood door (1) and the internally attached frame (2) are fixedly connected, and the internally attached frame (2) and the noise reduction deflector plate (3) are fixedly connected; The noise reduction guide plate (3) is provided with a plurality of noise reduction ventilation holes; The noise reduction ventilation holes on the noise reduction guide plate (3) and the heat dissipation ventilation holes on the hood door (1) are staggered with each other.

2. A loader hood door ventilation and noise reduction structure according to claim 1, characterized in that: The heat dissipation ventilation holes are arranged in a circular shape, and the noise reduction ventilation holes are arranged in an elliptical shape.

3. A loader hood door ventilation and noise reduction structure according to claim 1, characterized in that: The area formed by the multiple noise reduction ventilation holes on the noise reduction deflector (3) is larger than the area formed by the multiple heat dissipation ventilation holes on the hood door (1).

4. A loader hood door ventilation and noise reduction structure according to claim 1, characterized in that: The noise reduction deflector plate (3) is welded to the inner frame (2), and a distance is provided between the noise reduction deflector plate (3) and the hood door (1), and the inner frame (2) is welded to the hood door (1).

5. The loader hood door ventilation and noise reduction structure according to claim 1, characterized in that: The hood doors (1) are symmetrically arranged on both sides of the loader.

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