A self-protecting shield and a generator

Abstract

The utility model discloses a self -protection shield and generator belongs to generator technical field, including bottom plate and the edge baffle of connecting in bottom plate periphery side, the bottom plate is full -seal structure, the inside of edge baffle and / or the inside of bottom plate is provided with support structure, the inside of edge baffle and the inside of bottom plate form side inlet air passage, the side inlet air passage is communicated with outside through the edge of the edge baffle away from bottom plate, this design can improve generator rear end protection effect under the premise of not influencing generator cooling effect, effectively blocks the direct splashing of rear end mud water, can be applicable to the application of special bad washing working condition of mine truck etc. to prolong the service life of generator.

Description

Technical Field

[0001] This utility model belongs to the field of generator technology, specifically relating to a self-protective cover and a generator. Background Technology

[0002] Commercial vehicle applications, especially dump truck applications, often face the need for integrated plant and mine operations or paved road transportation. In such conditions, vehicles require high-pressure water washing upon exiting the mine. However, under prolonged washing, the side mudguards of most vehicles may detach or lack sufficient protection, allowing mud and water to directly wash onto the generator's rear cover. However, existing air-cooled generators use a rear-end perforated structure for the cover 1 to facilitate the entry of cold air. Figure 1 As shown, air enters directly from the rear end through the perforated air inlet 11. When a high-pressure water gun is used for washing, the mud and water will be washed onto the rectifier bridge through the perforated rear cover. Since slag contains a lot of acid and alkali, the mud and water will cause the generator to rust inside.

[0003] Existing generator covers are not fully suitable for applications such as mining trucks that have special and harsh washing conditions. They cannot prevent the possibility that mud and water may enter the generator from the rear air intake of the generator cover when the side protection of the whole vehicle is insufficient. Therefore, there is an urgent need for a generator cover that can effectively protect the rear of the generator without affecting the air intake. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a self-protective shield and generator to address the shortcomings of the existing technology, which can improve the protection effect of the generator's rear end without affecting the generator's cooling effect.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A self-protective cover includes a base plate and an edge baffle connected to the periphery of the base plate. The base plate is a fully sealed structure. A support structure is provided on the inner side of the edge baffle and / or the inner side of the base plate, so that a side air intake channel is formed between the inner side of the edge baffle and the inner side of the base plate and the generator end cover used in conjunction with it. The side air intake channel is connected to the outside through the edge of the edge baffle away from the base plate.

[0007] Furthermore, the support structure includes a plurality of mounting bosses disposed on the inner wall of the base plate, the height of the mounting bosses being lower than the height of the edge baffle.

[0008] Furthermore, the mounting boss is a columnar structure, and the mounting boss has an axial mounting hole that connects the inner and outer sides of the base plate.

[0009] Furthermore, the support structure includes a plurality of positioning bosses spaced apart on the inner wall of the edge baffle.

[0010] Furthermore, the inner side of the connection between the edge baffle and the bottom plate is configured as an arc-shaped guide groove.

[0011] Furthermore, the inner wall of the base plate is axially and evenly provided with aerodynamic grilles, which are located at the edge of the base plate.

[0012] Furthermore, the edge baffle is provided with a side avoidance interface for avoiding the side output bolts.

[0013] Furthermore, the base plate is provided with a rear clearance interface for avoiding the rear output bolt, and the rear clearance interface is provided with a sealing structure.

[0014] A generator includes a front cover, a rear cover, and a stator assembly and a rotor assembly installed in the space formed by the front cover and the rear cover. The self-protecting cover is installed on the rear side of the rear cover, and the side air intake channel is formed between the self-protecting cover and the rear cover.

[0015] Furthermore, the rear end face of the rear end cover has a plurality of mounting holes, and fasteners pass through the mounting holes on the base plate and the rear end cover to fix the self-protective cover to the rear end cover.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] The self-protective cover and generator disclosed in this utility model change the rear air intake method of the existing technology center to the side air intake method. The air intake is through the edge baffle away from the bottom plate, and the bottom plate is a fully sealed structure with good protection effect. Therefore, when the side protection of the whole vehicle is insufficient, when high pressure water gun is used for washing, the acidic and alkaline mud water cannot enter the generator from the rear of the generator, thus extending the service life of the generator.

[0018] In this utility model, the axial and radial positioning of the protective cover on the generator rear end cover is achieved by the mounting boss on the base plate and the positioning boss on the edge baffle, ensuring the formation of the side air intake channel, and the cross-sectional area of ​​the air intake channel is guaranteed not to affect its cooling effect through the corresponding size design; at the same time, this application achieves the fixation between the protective cover and the rear end cover by fasteners passing through the mounting boss and the mounting holes on the rear end cover, which facilitates the installation of the protective cover.

[0019] In this invention, the protective cover is provided with an arc-shaped guide groove and a turbulence grille, which can reduce eddies and turbulence in the air duct, make the air pressure smooth, and ensure the stability of the air intake. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a generator in the prior art;

[0021] Figure 2 This is a schematic diagram of the structure of the first embodiment of the self-protective shield of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the second embodiment of the self-protective shield of this utility model;

[0023] Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure;

[0024] Figure 5 This is a cross-sectional structural schematic diagram of the generator of this utility model;

[0025] Figure 6 This is a schematic diagram of the generator's rear end structure;

[0026] In the diagram, 1-protective cover, 11-hollowed-out air inlet, 2-base plate, 21-mounting boss, 211-mounting hole, 22-reinforcing rib, 23-guide channel, 24-turbulence grille, 26-rear clearance interface, 27-sealing insert, 271-through hole, 3-edge baffle, 31-positioning boss, 32-side clearance interface, 4-generator, 41-front cover, 42-rear cover, 422-fastener, 43-pulley, 5-side air inlet channel. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that in the following description, "front" refers to the end of the generator 4 with the pulley 43, and "rear" refers to the end of the generator 4 with the protective cover 1. The description of the "front" and "rear" positions on the protective cover 1 also follows this direction.

[0029] Example 1:

[0030] like Figure 2 and Figure 3 As shown, a self-protective cover includes a base plate 2 and edge baffles 3 connected to the periphery of the base plate 2. The base plate 2 is a fully sealed structure. Support structures are provided on the inner side of the edge baffles 3 and / or the inner side of the base plate 2, forming a side air intake channel 5 between the inner side of the edge baffles 3 and the inner side of the base plate 2 and the generator end cover used in conjunction with them. The side air intake channel 5 communicates with the outside through the edge of the edge baffles 3 away from the base plate 2. This cover 1's structure prevents direct splashing of mud and water from the rear end, making it suitable for applications with particularly harsh washing conditions, such as those involving mining operations.

[0031] Specifically, the support structure includes multiple positioning bosses 31 spaced apart on the inner wall of the edge baffle 3. The inner diameter of the edge baffle 3 is larger than the outer diameter of the rear end cover 42. When the cover 1 is assembled onto the generator 4, the positioning bosses 31 contact the circumferential end face of the rear end cover 42 to achieve radial positioning. Simultaneously, the positioning bosses 31 support the edge baffle 3, ensuring that the gap formed between the edge baffle 3 and the circumferential end face of the rear end cover 42 has a sufficient cross-sectional area to guarantee air intake. The gap between adjacent positioning bosses 31 constitutes the front half of the side air intake channel 5. To facilitate the installation of the cover 1, the front end of the positioning bosses 31 is beveled.

[0032] Furthermore, the support structure also includes several mounting bosses 21 set on the inner wall of the base plate 2. The height of the mounting bosses 21 is lower than the height of the edge baffle 3. When the cover 1 is assembled to the generator 4, the end face of the mounting bosses 21 will abut against the axial end face of the rear end cover 42, thereby achieving axial positioning of the cover 1. The mounting bosses 21 support the base plate 2, ensuring that the gap formed between the base plate 2 and the axial end face of the rear end cover 42 has a sufficient cross-sectional area to ensure air intake. This gap is the rear half of the side air intake channel 5.

[0033] The mounting boss 21 is a columnar structure with axial mounting holes 211. The mounting holes 211 connect the inner and outer sides of the base plate 2, and the cover 1 and the rear end cover 42 can be fixed by fasteners 422 passing through the mounting holes 211. In this application, four mounting bosses 21 are provided, evenly distributed at the edge of the base plate 2.

[0034] The side air intake duct 5 consists of the two gaps mentioned above. External cold air passes sequentially through the gap between the edge baffle 3 and the circumferential end face of the rear end cover 42, and the gap between the bottom plate 2 and the axial end face of the rear end cover 42, and finally enters the internal air duct of the generator 4. Through the dimensional design of the positioning boss 31 and the mounting boss 21, the cross-sectional area of ​​the air intake duct, especially the cross-sectional area of ​​the gap between the edge baffle 3 and the circumferential end face of the rear end cover 42, is not less than the cross-sectional area of ​​the smallest part of the internal air duct of the generator 4, thus not affecting its cooling effect.

[0035] To improve the stability of the air intake, an arc-shaped guide groove 23 is set on the inner side of the connection between the edge baffle 3 and the base plate 2. The air intake is guided by the guide groove 23, which can reduce the turbulence in the air duct and ensure smooth air pressure. Preferably, the inner wall of the base plate 2 is axially and evenly provided with turbulence grilles 24, such as... Figure 4 As shown, the turbulence grille 24 is located at the edge of the base plate 2, opposite to the edge of the axial end face of the rear cover 42. This structure can reduce turbulence in the air duct and further improve the stability of the air intake.

[0036] Multiple reinforcing ribs 22 may also be provided on the base plate 2. As shown in the attached drawings of this application, the reinforcing ribs 22 may include radial structures and circular structures, thereby enhancing the strength of the base plate 2.

[0037] like Figure 2 As shown, in some embodiments of this application, the edge baffle 3 is provided with a side avoidance interface 32 for avoiding the side output bolt. The side avoidance interface 32 avoids the side output bolt and fits the outer contour of the rear end cover 42 at that location. Therefore, there is no side air intake channel 5 at the side avoidance interface 32.

[0038] like Figure 3 and Figure 4 As shown in some other embodiments of this application, the base plate 2 is provided with a rear clearance interface 26 for avoiding the rear output bolt, and a sealing structure is provided at the rear clearance interface 26. In this application, the sealing structure is a sealing insert 27 embedded in the rear clearance interface 26. The sealing insert 27 has a through hole 271 for the wire harness connecting the rear output bolt to pass through. The wire harness and the through hole 271 can be interference-fitted to ensure the sealing performance at the base plate 2.

[0039] Therefore, the side-inlet shield 1 of this application can be applied to a generator 4 with a side-output bolt structure, or to a generator 4 with a rear-output bolt structure.

[0040] Example 2:

[0041] like Figure 5 As shown, a generator includes a front cover 41, a rear cover 42, and a stator assembly and a rotor assembly installed within the space formed by the front cover 41 and the rear cover 42. A self-protecting shield 1 as described in Embodiment 1 is installed on the rear side of the rear cover 42 (with the generator as the output side and the shield as...). Figure 2 (Structure example provided) A side air intake channel 5 is formed between the protective cover 1 and the rear end cover 42. The protective cover 1 and the rear end cover 42 form a U-shaped sealing structure, which can solve the problem of insufficient side protection of the whole vehicle and the possibility of mud and water entering the interior of the generator 4 from the rear air intake of the generator 4 protective cover 1 during washing.

[0042] like Figure 6 As shown, the rear end cover 42 has several mounting holes 211 on its rear end face. Fasteners 422 pass through the mounting holes 211 on the base plate 2 and the rear end cover 42 to fix the self-protective cover 1 to the rear end cover 42. The fasteners 422 can be screws.

[0043] The self-protective cover and generator of this utility model form a side air intake channel by setting the bottom plate of the cover as a fully sealed structure and setting a support structure on the edge baffle and / or the inner side of the bottom plate. The side air intake channel is connected to the outside through the edge baffle away from the bottom plate. The structure of this cover blocks the direct splashing of mud water at the rear end and is suitable for applications with special and harsh washing conditions such as mine cars.

[0044] In the description of this specification, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 on this utility model.

[0045] In this specification, the terms "several" and similar expressions mean one or more. "More than" means at least two, such as two, three, etc., unless otherwise explicitly specified. Unless otherwise explicitly specified, terms such as "set," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution.

[0046] While specific embodiments of this utility model have been described above, those skilled in the art should understand that the described embodiments are merely some, not all, embodiments of this utility model. These are merely illustrative examples, and the scope of protection of this utility model is defined by the claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model and without any inventive effort, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A self-protective shield, characterized in that, Includes a base plate (2) and an edge baffle (3) connected to the periphery of the base plate (2). The base plate (2) is a fully sealed structure. The inner side of the edge baffle (3) and / or the inner side of the base plate (2) are provided with a support structure, so that the inner side of the edge baffle (3) and the inner side of the base plate (2) and the generator end cover used in conjunction with it form a side air intake channel (5). The side air intake channel (5) is connected to the outside through the edge of the edge baffle (3) away from the base plate (2).

2. The self-protective shield according to claim 1, characterized in that, The support structure includes several mounting bosses (21) set on the inner wall of the base plate (2), and the height of the mounting bosses (21) is lower than the height of the edge baffle (3).

3. The self-protective shield according to claim 2, characterized in that, The mounting boss (21) is a columnar structure. The mounting boss (21) has an axial mounting hole (211) that connects the inner and outer sides of the base plate (2).

4. The self-protective shield according to claim 3, characterized in that, The support structure includes multiple positioning bosses (31) spaced apart on the inner wall of the edge baffle (3).

5. The self-protective shield according to claim 3, characterized in that, The inner side of the connection between the edge baffle (3) and the bottom plate (2) is set as an arc-shaped guide groove (23).

6. The self-protective shield according to claim 3, characterized in that, The inner wall of the base plate (2) is axially and evenly provided with a baffle grille (24), which is located at the edge of the base plate (2).

7. The self-protective shield according to claim 3, characterized in that, The edge baffle (3) is provided with a side avoidance interface (32) for avoiding the side output bolt.

8. The self-protective shield according to claim 3, characterized in that, The base plate (2) is provided with a rear clearance interface (26) for avoiding the rear output bolt, and a sealing structure is provided at the rear clearance interface (26).

9. A generator, comprising a front cover (41), a rear cover (42), and a stator assembly and a rotor assembly mounted within the space formed by the front cover (41) and the rear cover (42), characterized in that, The rear side of the rear cover (42) is equipped with a self-protective shield (1) as described in any one of claims 3 to 8, and a side air intake channel (5) is formed between the self-protective shield (1) and the rear cover (42).

10. The generator according to claim 9, characterized in that, The rear end cover (42) has several mounting holes. Fasteners (422) pass through the mounting holes (211) on the base plate (2) and the rear end cover (42) to fix the self-protective cover (1) to the rear end cover (42).

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