Heat dissipation screen plate and engine power box

Abstract

The engine power box comprises a power box, a heat dissipation net assembly comprises a heat dissipation net, a main heat dissipation area and an auxiliary heat dissipation area are arranged on the heat dissipation net, a main heat dissipation hole set composed of a plurality of main heat dissipation holes is distributed in the main heat dissipation area, and an auxiliary heat dissipation hole set composed of a plurality of auxiliary heat dissipation holes is distributed in the auxiliary heat dissipation area. The centers of the main heat dissipation holes and the secondary heat dissipation holes are uniformly distributed in a rectangular array or a staggered array; and the hole width of the secondary heat dissipation hole group of the secondary heat dissipation area is gradually increased along with outward diffusion from the gradual change point. The heat dissipation net is divided into the main heat dissipation area and the secondary heat dissipation area, the hole width of the heat dissipation holes is gradually increased from the center of the secondary heat dissipation area to the edge, the heat dissipation surface of the main heat dissipation area is sufficient for sufficient heat dissipation, and the hole width of the secondary heat dissipation holes away from the main heat dissipation area is gradually reduced, so that the requirement that the peripheral heat dissipation surface of the main heat dissipation area is gradually reduced is met; and the risk that gravels enter the power box from the peripheral heat dissipation area is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engine power boxes, in particular to an engine power box equipped with a heat dissipation mesh plate. Background Art

[0002] Generally, the engine power box will be equipped with a heat dissipation net, and the heat dissipation net generally adopts a uniformly arranged mesh structure, so that the mesh holes of the entire heat dissipation area are evenly distributed and have the same caliber.

[0003] For example, the Chinese utility model patent "A dual-power drive hydraulic excavator" with announcement number CN219508704U includes an excavator body, a heat dissipation component and a filter. The excavator body has a power box, and a diesel engine and an electric motor connected to the excavator body are installed in the power box. The heat dissipation end of the heat dissipation component faces the electric motor. The filter is installed at the opening set on the side wall of the power box to connect the power box with the outside world. In order to facilitate heat exchange between the inside of the power box and the outside world, the filter includes a first filter and a second filter. The horizontal height of the first filter is greater than the horizontal height of the shell, and the horizontal height of the second filter is less than the horizontal height of the shell. The first filter and the second filter are heat dissipation nets used to communicate with the outside world for ventilation and heat dissipation.

[0004] As mentioned above, the rectangular coverage area of ​​a general heat dissipation net includes a main heat dissipation zone and a peripheral heat dissipation zone. The heat dissipation surface requirements of the main heat dissipation zone and the peripheral heat dissipation zone are different. As a secondary heat dissipation zone, the peripheral heat dissipation zone has a lower heat dissipation requirement. However, the mesh holes of the existing general heat dissipation net are arranged according to the heat dissipation surface of the main heat dissipation zone, and the mesh holes of the peripheral heat dissipation zone are also larger and denser than those of the main heat dissipation zone, which makes it more risky for sand, gravel and stone to enter the power box from the peripheral heat dissipation zone. Utility Model Content

[0005] The purpose of the invention of the utility model is to provide an engine power box in view of the above-mentioned problem, wherein the heat dissipation net is divided into a main heat dissipation zone and a secondary heat dissipation zone, and the width of the secondary heat dissipation holes gradually decreases as they are away from the main heat dissipation zone, thereby effectively reducing the risk of sand and gravel entering the power box from the peripheral heat dissipation zone.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0007] An engine power box includes a power box (power box body shell), and a heat dissipation net assembly for connecting to the outside world for heat dissipation is configured on the power box; the heat dissipation net assembly includes a heat dissipation net, and a main heat dissipation area and a secondary heat dissipation area are arranged on the heat dissipation net, and the main heat dissipation area is distributed with a main heat dissipation hole group composed of a plurality of main heat dissipation holes, and the secondary heat dissipation area is distributed with a secondary heat dissipation hole group composed of a plurality of secondary heat dissipation holes, and the centers of the main heat dissipation holes and the secondary heat dissipation holes are evenly distributed in a rectangular array or a staggered array; it is defined that each secondary heat dissipation area has a gradient point at the maximum distance from the main heat dissipation area, and the hole width of the secondary heat dissipation hole group of the secondary heat dissipation area gradually increases as it spreads outward from the gradient point, and the hole width of the secondary heat dissipation hole is smaller than that of the main heat dissipation hole. Wherein, the main heat dissipation hole and the secondary heat dissipation hole are respectively circular or regular hexagonal structures.

[0008] As mentioned above, the heat dissipation network is divided into a main heat dissipation zone and a secondary heat dissipation zone. The centers of the heat dissipation holes (main heat dissipation holes and secondary heat dissipation holes) are evenly distributed in a rectangular array or a staggered array. The hole width of the heat dissipation holes gradually increases from the center of the secondary heat dissipation zone to the edge (connected with the main heat dissipation zone). The heat dissipation surface of the main heat dissipation zone is sufficient to dissipate heat fully, and the hole width of the secondary heat dissipation holes gradually decreases as they move away from the main heat dissipation zone, meeting the demand for gradually reducing the peripheral heat dissipation surface of the main heat dissipation zone, effectively reducing the risk of sand and gravel entering the power box from the peripheral heat dissipation zone, and the spacing between them becomes larger and the strength is greater.

[0009] Based on the above solution, in an improved solution, the heat dissipation net assembly further includes a frame plate, which includes a horizontal frame and a vertical frame, which are connected horizontally and vertically and are respectively arranged on the outer periphery of the heat dissipation net. The frame plate is stronger than the heat dissipation net, and plays a role in fixing the heat dissipation net and fixing the heat dissipation net to the power box through the frame plate, effectively improving the connection strength.

[0010] Based on the above scheme, in an improved scheme, the heat dissipation net assembly also includes a slide rail group, which includes two slide rails, which are arranged in parallel on the outer shell of the power box, and the slide grooves of the two slide rails are arranged relatively, and the frame plate is slidably connected in the slide grooves of the two slide rails. Among them, the cross section of the slide rail is a U-shaped structure, and a limit plate is arranged at the end of the slide rail. The limit plate is arranged in the slide groove to play a limiting role. In this way, the slide rail sliding connection is adopted to achieve a detachable connection, which is convenient for quick disassembly and replacement.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] The utility model provides a heat dissipation mesh plate and an engine power box, which divide the heat dissipation mesh into a main heat dissipation zone and a secondary heat dissipation zone. The centers of the heat dissipation holes (the main heat dissipation holes and the secondary heat dissipation holes) are evenly distributed in a rectangular array or a staggered array. The hole width of the heat dissipation holes gradually increases from the center to the edge (connected with the main heat dissipation zone) of the secondary heat dissipation zone. The heat dissipation surface of the main heat dissipation holes in the main heat dissipation zone is sufficient to fully dissipate heat, and the hole width of the secondary heat dissipation holes gradually decreases as they are away from the main heat dissipation zone, meeting the demand for gradually reducing the peripheral heat dissipation surface of the main heat dissipation zone, effectively reducing the risk of sand and gravel entering the power box from the peripheral heat dissipation zone, and the larger the spacing between them, the greater the strength, which is conducive to increasing the strength of the heat dissipation mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of an excavator of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the power box.

[0015] Figure 3 yes Figure 2 Side view of the heat dissipation mesh component connection structure.

[0016] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the heat dissipation network component.

[0017] Figure 5 yes Figure 3 Top view of the heat dissipation grid and frame plate.

[0018] Figure 6 yes Figure 3 Schematic diagram of the slide rail structure.

[0019] Figure 7 yes Figure 2 Top view of heat dissipation network I.

[0020] Figure 8 yes Figure 2 Top view of heat dissipation network II.

[0021] Fig. 9 yes Figure 8 Front view of the heat dissipation grid II in installation status.

[0022] Fig.10 This is another example diagram of the distribution of heat dissipation holes of the heat dissipation net of the present utility model.

[0023] In the accompanying drawings, 100, excavator body, 110, power box, 120, diesel engine, 130, electric motor, 200, heat dissipation component, 300, heat dissipation net, 310, filter I, 320, filter II, 330, filter III, 1, heat dissipation net, 11, frame plate, 2, slide rail, 21, limit plate. DETAILED DESCRIPTION

[0024] Example 1

[0025] See also Figure 1 and Figure 2 , taking the Chinese utility model patent "A dual-power drive hydraulic excavator" with the announcement number CN219508704U applied by this application as an example for explanation. Herein, the structure of the excavator is briefly described, which includes an excavator body 100, a heat dissipation component 200 and a filter 300. The excavator body 100 has a power box 110, and a diesel engine 120 and an electric motor 130 connected to the excavator body 100 are installed in the power box 110. The heat dissipation component 200 is slidably connected to the power box 110, and the heat dissipation component 200 can slide to a first position and a second position. When the heat dissipation component 200 slides to the first position, the heat dissipation end of the heat dissipation component 200 faces the diesel engine 120, and when the heat dissipation component 200 slides to the second position, the heat dissipation end of the heat dissipation component 200 faces the electric motor 130. The filter 300 is installed at the opening set on the side wall of the power box 110 to connect the power box 110 with the outside. The heat dissipation assembly 200 includes a fan, which forms a heat dissipation end and is slidably connected to the power box; the heat dissipation assembly also includes a push piece, which is installed in the power box, and the output end of the push piece is connected to the fan to drive the fan to slide between the first position and the second position.

[0026] See also Figure 1-Figure 9 The engine power box of an excavator of the present embodiment 1 includes a power box 110 arranged on the excavator body 100. The power box (power box housing) 100 is provided with a heat dissipation net component for heat dissipation connected to the outside. The heat dissipation component is the above-mentioned filter 300. There are three types of filter I 310, filter II 320 and filter III 330 corresponding to their installation positions. The structure of each filter is roughly the same, but the size and mesh size (heat dissipation hole) and distribution thereof are different.

[0027] Each heat dissipation mesh assembly (filter mesh) includes a heat dissipation mesh 1, on which a main heat dissipation area and a secondary heat dissipation area are arranged. The main heat dissipation area is distributed with a main heat dissipation hole group composed of a plurality of main heat dissipation holes, and the secondary heat dissipation area is distributed with a secondary heat dissipation hole group composed of a plurality of secondary heat dissipation holes. The centers of the main heat dissipation holes and the secondary heat dissipation holes are evenly distributed in a rectangular array or a staggered array, as shown in the figure, taking the staggered array evenly distributed as an example.

[0028] It is defined that each secondary heat dissipation zone has a gradient point at the maximum distance from the main heat dissipation zone, and the hole width of the secondary heat dissipation hole group of the secondary heat dissipation zone gradually increases as it spreads outward from the gradient point, and the hole width of the secondary heat dissipation hole is smaller than that of the main heat dissipation hole.

[0029] The heat dissipation net 1 is formed by opening a main heat dissipation hole group and a secondary heat dissipation hole group on the plate. As mentioned above, the center positions are marked on the stainless steel plate in sequence, and then a circle is drawn with the gradient point as the center to mark the secondary heat dissipation area. In the circular secondary heat dissipation area, the opening width is increased row by row or column by column from the gradient point to the outermost edge of the secondary heat dissipation area. The width of the secondary heat dissipation hole at the outermost edge is the same as that of the main heat dissipation hole; for example, the center spacing of the heat dissipation holes is 25mm, the diameter of the circular opening of the main heat dissipation hole is 20mm, the diameter of the circular opening of the secondary heat dissipation hole at the gradient point is 4mm, and the diameter of the circular opening is increased column by column with an increment of 2mm outward.

[0030] The main heat dissipation holes and the secondary heat dissipation holes are respectively in a circular or regular hexagonal structure, as shown in the figure, and the main heat dissipation holes and the secondary heat dissipation holes are both described by taking the regular hexagonal structure as an example.

[0031] As mentioned above, in the excavator power box, filter I faces the heat dissipation component 200, and the fan of the heat dissipation component 200 radiates outward in a circular heat dissipation area; the left side of filter II faces the diesel engine heat dissipation fan, serving as the main heat dissipation area, and the right side of filter II serves as the secondary heat dissipation area; the right side of filter II faces the engine heat dissipation fan, serving as the main heat dissipation area, and the left side of filter III serves as the secondary heat dissipation area.

[0032] like Figure 7 As shown, on the rectangular heat dissipation net, the central area is used as the main heat dissipation area to open a main heat dissipation hole group, and the four corner areas are used as secondary heat dissipation areas to open secondary heat dissipation hole groups, thus forming a heat dissipation net of the filter screen I, and the strength of the four corners is relatively strong.

[0033] like Figure 8 and Fig. 9 As shown, on the rectangular heat dissipation net, the left side is used as the main heat dissipation area to open the main heat dissipation hole group, the right side is the secondary heat dissipation area, and the secondary heat dissipation hole groups are opened at the upper and lower corners of the right side, so as to form the heat dissipation net of the filter screen II, and the upper and lower corners of the right side are relatively strong. On the other hand, the heat dissipation net of the filter screen II can be turned over and installed to form the heat dissipation net of the filter screen III.

[0034] During installation, the heat dissipation net can be directly welded or bonded to the power box housing, or a mounting hole can be provided and the heat dissipation net can be connected to the power box housing with bolts.

[0035] As mentioned above, the heat dissipation network is divided into a main heat dissipation zone and a secondary heat dissipation zone. The centers of the heat dissipation holes (main heat dissipation holes and secondary heat dissipation holes) are evenly distributed in a rectangular array or a staggered array. The hole width of the heat dissipation holes gradually increases from the center of the secondary heat dissipation zone to the edge (connected with the main heat dissipation zone). The heat dissipation surface of the main heat dissipation zone is sufficient to dissipate heat fully, and the hole width of the secondary heat dissipation holes gradually decreases as they move away from the main heat dissipation zone, meeting the demand for gradually reducing the peripheral heat dissipation surface of the main heat dissipation zone, effectively reducing the risk of sand and gravel entering the power box from the peripheral heat dissipation zone, and the spacing between them becomes larger and the strength is greater.

[0036] Example 2

[0037] See also Figure 1-Figure 9 In the second embodiment, an engine power box of an excavator is provided. Based on the solution of the first embodiment, the heat dissipation net assembly further comprises a frame plate 11. The frame plate 11 comprises a horizontal frame and a vertical frame. The horizontal frame and the vertical frame are connected horizontally and vertically and are respectively arranged on the outer periphery of the heat dissipation net. The horizontal frame and the vertical frame are both U-shaped structures, arranged relatively and clamped on the outer edge of the heat dissipation net.

[0038] The frame plate is stronger than the heat dissipation net, and plays a role in fixing the heat dissipation net and fixing the heat dissipation net to the power box through the frame plate, effectively improving the connection strength.

[0039] Example 3

[0040] See also Figure 1-Figure 9 In the present embodiment 3, an engine power box of an excavator is provided. Based on the above-mentioned embodiment 1 or embodiment 2, the heat dissipation net assembly further comprises a slide rail assembly, which comprises two slide rails 2, which are arranged in parallel on the outer shell (shell) of the power box, and the slide grooves of the two slide rails 2 are arranged oppositely, and the frame plate 11 is slidably connected in the slide grooves of the two slide rails 2. The cross section of the slide rail is a U-shaped structure, and a limit plate 21 is arranged at the end of the slide rail 2, and the limit plate 21 is arranged in the slide groove to play a limiting role.

[0041] In this way, a slide rail sliding connection is adopted to achieve a detachable connection, which is convenient for quick disassembly, assembly and replacement.

[0042] As mentioned above, we can also apply Grasshopper modeling to the modeling of heat dissipation mesh plates for mechanical equipment. We can use Grasshopper to build a complex, controllable, and changeable porous array model, and then import it into the engineering 3D software for secondary feature modeling. This hole modeling method can quickly solve the problem that engineering software has difficulty in modeling complex gradient holes. On a power box device, since there are engines and other machines that need heat dissipation inside, we need to install a heat sink on the outer frame of the power box. We designed the installation method to be replaceable, that is, there is a guide rail inside the outer frame of the power box, and we can directly insert the heat dissipation mesh through the guide rail. The heat dissipation rules can be determined by the different distribution methods of the machines in the power box. For example Fig.10 Assuming that the main heat dissipation vents of a heat dissipation net are set at the left and right edges, we can design the interference points of the mesh plate to be set in the middle of the upper and lower edges, and change the distance between the holes in a gradual way of diffusing outward.

[0043] like Figure 8, the main heat dissipation vent (main heat dissipation area) of the heat dissipation net of the filter II is on the left. At this time, we can design the interference points of the mesh plate to be set at the upper right and lower right, and change the distance between the holes in a gradual way of diffusion outward. Doing so ensures that the heat dissipation vents can dissipate heat and ventilation smoothly; second, the holes in the upper right and lower right are smaller, the mesh radius is smaller, and the distance between the two holes is also larger, which can effectively prevent the entry of sand, gravel and iron filings and extend the life of the equipment; third, it is easy to replace: because the engine and other machines in the power box will adjust their positions according to the different equipment used, so that the heat dissipation position will also change, at this time we can just replace the heat dissipation mesh plate, which also reduces production costs. Therefore, the present application has the following advantages:

[0044] 1. Heat dissipation holes are set in the heat dissipation mesh plate of the mechanical equipment. The heat dissipation holes are gradually distributed outward with the heat dissipation area as the center to improve the beauty of the equipment.

[0045] 2. The different sizes of mesh holes can achieve heat dissipation in functional areas. That is, the holes in the heat dissipation area are made larger to fully dissipate the heat, and the holes in the non-heat dissipation area are made smaller, which can prevent external sand, gravel, iron filings, etc. from entering the equipment and play a protective role; and the bearing strength of this area is greater, which also increases the service life of the equipment.

[0046] It should be pointed out that the examples of the above-mentioned embodiments can be preferably combined with one or more of them according to actual needs, and multiple examples use a set of drawings to illustrate the combined technical features, which will not be described one by one here.

[0047] It should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0048] The above description is a detailed description and illustration of the preferred feasible embodiments of the utility model, but these descriptions are not intended to limit the scope of protection required by the utility model. All equivalent changes or modified changes completed under the technical teachings suggested by the utility model should fall within the scope of patent protection covered by the utility model.

Claims

1. A heat dissipation mesh plate, comprising a heat dissipation mesh, characterized in that: The heat dissipation net is arranged with a main heat dissipation area and a secondary heat dissipation area, the main heat dissipation area is distributed with a main heat dissipation hole group consisting of a plurality of main heat dissipation holes, the secondary heat dissipation area is distributed with a secondary heat dissipation hole group consisting of a plurality of secondary heat dissipation holes, the centers of the main heat dissipation holes and the secondary heat dissipation holes are evenly distributed in a rectangular array or a staggered array; each secondary heat dissipation area is defined to have a gradient point at the maximum position of the distance from the main heat dissipation area, the hole width of the secondary heat dissipation hole group of the secondary heat dissipation area gradually increases as it diffuses outward from the gradient point, and the hole width of the secondary heat dissipation hole is smaller than that of the main heat dissipation hole.

2. A heat dissipation screen according to claim 1, characterized in that: It also includes a frame plate, which includes a horizontal frame and a vertical frame. The horizontal frame and the vertical frame are connected horizontally and vertically and are respectively arranged on the outer periphery of the heat dissipation net.

3. A heat dissipation screen according to claim 2, characterized in that: It also includes a slide rail group, which includes two slide rails. The two slide rails can be arranged in parallel on the outer shell of the power box, and the slide grooves of the two slide rails are arranged relatively, and the frame plate is slidably connected in the slide grooves of the two slide rails.

4. A heat dissipation screen according to claim 3, characterized in that: The cross-section of the slide rail is in a U-shaped structure, a limit plate is arranged at the end of the slide rail, and the limit plate is arranged in the slide groove; and the heat dissipation net is formed by opening a main heat dissipation hole group and a secondary heat dissipation hole group on the plate, and the main heat dissipation holes and the secondary heat dissipation holes are respectively circular or hexagonal structures; and one side of the heat dissipation net is a main heat dissipation area and the two corners of the other side are secondary heat dissipation areas, or the middle of the heat dissipation net is the main heat dissipation area and the four outer corners are secondary heat dissipation areas.

5. An engine power box, comprising a power box, wherein the power box is provided with a heat dissipation net assembly for heat dissipation connected to the outside; characterized in that: The heat dissipation net component includes a heat dissipation net, on which a main heat dissipation area and a secondary heat dissipation area are arranged, the main heat dissipation area is distributed with a main heat dissipation hole group consisting of a plurality of main heat dissipation holes, the secondary heat dissipation area is distributed with a secondary heat dissipation hole group consisting of a plurality of secondary heat dissipation holes, the centers of the main heat dissipation holes and the secondary heat dissipation holes are evenly distributed in a rectangular array or a staggered array; each secondary heat dissipation area is defined to have a gradient point at a maximum position from the main heat dissipation area, the hole width of the secondary heat dissipation hole group of the secondary heat dissipation area gradually increases as it diffuses outward from the gradient point, and the hole width of the secondary heat dissipation hole is smaller than that of the main heat dissipation hole.

6. The engine power box according to claim 5, characterized in that: The heat dissipation net assembly also includes a frame plate, which includes a horizontal frame and a vertical frame. The horizontal frame and the vertical frame are connected horizontally and vertically and are respectively arranged on the outer periphery of the heat dissipation net.

7. The engine power box according to claim 6, characterized in that: The heat dissipation net assembly also includes a slide rail group, which includes two slide rails. The two slide rails are arranged in parallel on the outer shell of the power box, and the slide grooves of the two slide rails are arranged relatively, and the frame plate is slidably connected in the slide grooves of the two slide rails.

8. The engine power box according to claim 7, characterized in that: The cross-section of the slide rail is in a U-shaped structure, a limit plate is arranged at the end of the slide rail, and the limit plate is arranged in the slide groove; and the heat dissipation net is formed by opening a main heat dissipation hole group and a secondary heat dissipation hole group on the plate, and the main heat dissipation holes and the secondary heat dissipation holes are respectively circular or hexagonal structures; and one side of the heat dissipation net is a main heat dissipation area and the two corners of the other side are secondary heat dissipation areas, or the middle of the heat dissipation net is the main heat dissipation area and the four outer corners are secondary heat dissipation areas.

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