Lightweight high-strength diesel engine block

Abstract

The utility model relates to a kind of lightweight high-strength diesel engine box, including main box, the main box includes integrally connected heat dissipation cylinder and crank cavity, the top surface of the heat dissipation cylinder is equipped with the through-hole for communicating the crank cavity, the outer surface of the heat dissipation cylinder is integrally connected with several radiating fins, further include: shaft hole, the bottom of the crank cavity is penetrated and set up.This utility model in by setting reinforcing rib one and wavy reinforcing rib two, reinforcing rib one can directly replace original fourth reinforcing rib, provide direct support for core transmission component, and external wavy reinforcing rib two, by its continuous curve structure, can be more evenly dispersed and transmit stress, so as to replace original vertical intersection setting first reinforcing rib and second reinforcing rib, by focusing on reinforcing shaft hole area and crank cavity outer wall, while ensuring the overall structural strength of main box, effectively weight reduction is realized.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine technology, and in particular to a lightweight, high-strength diesel engine housing. Background Technology

[0002] A diesel engine is a compression-ignition internal combustion engine. Its working principle is to compress air to a high temperature through a piston, and then inject diesel fuel to perform work through spontaneous combustion. Its core characteristics are high compression ratio and high thermal efficiency, thus it has the advantages of high low-speed torque, good fuel economy and high durability. However, it also has challenges such as greater noise and vibration and more complex emission treatment.

[0003] A search revealed a Chinese patent application with patent number 202022325877.1, which discloses a high-strength and high-stability diesel engine housing. The housing includes a main housing, which comprises a crankshaft cavity and a cooling cylinder. Several cooling fins are integrally connected to the outer surface of the cooling cylinder around the cylinder body. The left and right ends of the crankshaft cavity are integrally connected to the left and right ends of the cooling fins via reinforcing plates. Several reinforcing ribs (first and second) are integrally connected to each reinforcing plate and the outer wall of the lower side of the crankshaft cavity. The bottom surface of the crankshaft cavity is integrally connected to the surface of the corresponding cooling cylinder via a third reinforcing rib. Several fourth reinforcing ribs are integrally connected to the inner and outer walls of the bottom surface of the crankshaft cavity. A shaft hole penetrating the bottom surface is opened on the bottom surface of the crankshaft cavity. Two balance recesses are provided below the shaft hole. The inner end of the balance recesses communicates with the inner cavity of the crankshaft cavity, and the outer end extends to the interior of the bottom wall of the crankshaft cavity. Although the above-mentioned patent can improve the structural strength of the main box, it still has the following shortcomings in use: the structural strength of the main box is improved by setting several reinforcing ribs one, two, three and four. Although this method of wrapping with reinforcing ribs can increase the strength of the main box, it will also lead to a significant increase in the weight of the main box.

[0004] Therefore, we have made improvements and proposed a lightweight, high-strength diesel engine housing to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a lightweight, high-strength diesel engine housing to solve the problems mentioned in the background art.

[0006] The purpose of this utility model is achieved as follows: A lightweight, high-strength diesel engine housing includes a main housing, which comprises an integrally connected cooling cylinder and crankshaft cavity. The top surface of the cooling cylinder has a through hole for communicating with the crankshaft cavity. A plurality of cooling fins are integrally connected to the outer surface of the cooling cylinder. The housing also includes: A shaft hole is formed through the bottom of the crankshaft cavity, and two balance recesses are provided on one side of the shaft hole; The reinforcing structure includes multiple reinforcing ribs I disposed on the inner wall of the crankshaft cavity and multiple reinforcing ribs II disposed on the outer wall of the screw hole; An accessory installation mechanism is fixedly connected between the outer wall of the screw hole and the outer wall of the heat dissipation cylinder; The positioning mechanism is fixedly connected to the top edge of the screw hole and is spaced apart from the mounting hole at the edge of the crankshaft cavity.

[0007] Furthermore, a plurality of the reinforcing ribs are fixedly connected to the inner wall of the crankshaft cavity and are distributed around the outer side of the shaft hole.

[0008] Furthermore, the second reinforcing rib is fixedly connected to the outer wall of the crankshaft cavity and is generally wavy.

[0009] Furthermore, the cross-section of the second reinforcing rib is triangular, and the top edge is arc-shaped.

[0010] Furthermore, the accessory mounting mechanism includes an accessory mounting seat integrally connected to the radiator cylinder and the crankshaft cavity. The accessory mounting seat has multiple screw holes on its side wall away from the crankshaft cavity, and multiple weight reduction holes are also provided through the accessory mounting seat.

[0011] Furthermore, the positioning mechanism includes a protrusion fixedly connected to the top edge of the screw hole, a positioning post fixedly installed on the top of the protrusion, and a positioning hole located on one side of the positioning post on the top of the protrusion.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model provides a lightweight and high-strength diesel engine housing. By setting a first reinforcing rib and a second wave-shaped reinforcing rib, the first reinforcing rib can directly replace the original fourth reinforcing rib and provide direct support for the core transmission components. The second wave-shaped reinforcing rib, with its continuous curve structure, can more evenly disperse and transmit stress, thereby replacing the original first and second reinforcing ribs that are vertically intersecting. By focusing on strengthening the shaft hole area and the outer wall of the crankshaft cavity, the overall structural strength of the main housing is ensured while effective weight reduction is achieved, solving the problem of significant weight increase of the housing caused by the use of a wrap-around reinforcing rib layout in the prior art. (2) By setting an accessory mounting base, screw holes and weight reduction holes, the accessory mounting base can replace the third reinforcing rib in the prior art when in use. While improving the connection strength between the cooling cylinder and the crankshaft cavity, the accessory mounting base can also be used with screw holes to install diesel engine accessories. Moreover, by setting weight reduction holes, the overall weight of the accessory mounting base can be reduced, thereby further reducing the weight of the main housing. (3) By setting up protrusions, positioning holes and positioning pins, the positioning holes and positioning pins on the main box body can cooperate with the positioning pins and positioning holes on the main box body cover to form a double reference positioning during use, which can effectively improve the positioning speed of the two during assembly, and at the same time avoid the problem of deviation during installation. Attached Figure Description

[0013] Figure 1 This is one of the overall structural schematic diagrams of this utility model; Figure 2 This is the second schematic diagram of the overall structure of this utility model; Figure 3 This is the third schematic diagram of the overall structure of this utility model; Figure 4 This is a partial structural schematic diagram of the utility model; Figure 5 for Figure 1 Enlarged view of the structure at point A in the middle.

[0014] In the picture: 1. Cooling cylinder; 2. Crankshaft cavity; 3. Protrusion; 4. Balance concave hole; 5. Accessory mounting base; 6. Reinforcing rib one; 7. Reinforcing rib two; 8. Shaft hole; 9. Heat sink; 10. Positioning hole; 11. Positioning post; 12. Screw hole; 13. Weight reduction hole. Detailed Implementation

[0015] To better understand the technical solution of this utility model, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of this utility model, but are merely possible implementations of the technical solution of this utility model. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example 1

[0017] See Figures 1-5 , Figure 1A schematic diagram of the overall structure of a lightweight, high-strength diesel engine housing is shown. As shown, this lightweight, high-strength diesel engine housing includes a main housing, which comprises an integrally connected cooling cylinder 1 and crankshaft cavity 2. The top surface of the cooling cylinder 1 has a through hole for connecting to the crankshaft cavity 2. A plurality of cooling fins 9 are integrally connected to the outer surface of the cooling cylinder 1. The housing also includes: A shaft hole 8 is formed through the bottom of the crankshaft cavity 2, and two balance recesses 4 are provided on one side of the shaft hole 8; The reinforcing structure includes multiple reinforcing ribs 6 disposed on the inner wall of the crankshaft cavity 2 and multiple reinforcing ribs 7 disposed on the outer wall of the screw hole 12. The accessory installation mechanism is fixedly connected between the outer wall of the screw hole 12 and the outer wall of the heat dissipation cylinder 1; The positioning mechanism is fixedly connected to the top edge of the screw hole 12 and is spaced apart from the mounting hole at the edge of the crankshaft cavity 2.

[0018] like Figures 1-3 As shown, in a preferred embodiment, based on the above method, further, multiple reinforcing ribs 6 are fixedly connected to the inner wall of the crankshaft cavity 2 and distributed around the outer side of the shaft hole 8, and the reinforcing ribs 7 are fixedly connected to the outer wall of the crankshaft cavity 2 and are generally wavy.

[0019] It should be noted that by setting reinforcing rib 6 and reinforcing rib 7, reinforcing rib 6 can replace the fourth reinforcing rib in the prior art during use. The wave-shaped reinforcing rib 7, with its continuous curve structure, can more evenly distribute and transfer stress, and can replace the first and second reinforcing ribs in the prior art. By reinforcing rib 6 and reinforcing rib 7, the part where the shaft hole 8 is located and the outer wall of the crankshaft cavity 2 are reinforced in a focused manner, so as to reduce the weight of the main housing while ensuring the strength of the main housing.

[0020] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the cross-section of the second reinforcing rib 7 is triangular, and the top edge is arc-shaped.

[0021] It should be noted that the triangular cross-section stiffener 7 has effective bending resistance, which can effectively enhance the overall rigidity of the outer wall of the crankshaft cavity 2 and resist the vibration and impact during diesel engine operation. At the same time, the top edge is set to be arc-shaped to avoid the risk of stress concentration in the right-angle cross-section and reduce the generation of fatigue cracks under alternating loads.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, in a preferred embodiment, based on the above method, the accessory mounting mechanism further includes an accessory mounting base 5 integrally connected to the radiator cylinder 1 and the crankshaft cavity 2. The accessory mounting base 5 has multiple screw holes 12 on its side wall away from the crankshaft cavity 2, and multiple weight reduction holes 13 are also provided through the accessory mounting base 5.

[0023] It should be noted that by setting the accessory mounting base 5, screw hole 12 and weight reduction hole 13, the accessory mounting base 5 can replace the third reinforcing rib in the prior art during use. While improving the connection strength between the cooling cylinder 1 and the crankshaft cavity 2, the accessory mounting base 5 can also be used with the screw hole 12 to install diesel engine accessories. Moreover, by setting the weight reduction hole 13, the overall weight of the accessory mounting base 5 can be reduced, thereby further reducing the weight of the main housing.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in a preferred embodiment, based on the above method, the positioning mechanism further includes a protrusion 3 fixedly connected to the top edge of the screw hole 12, a positioning post 11 fixedly installed on the top of the protrusion 3, and a positioning hole 10 located on one side of the positioning post 11 is opened on the top of the protrusion 3.

[0025] It should be noted that by setting the protrusion 3, positioning hole 10 and positioning post 11, the positioning hole 10 and positioning post 11 on the main body can cooperate with the positioning post 11 and positioning hole 10 on the main body cover to form a dual reference positioning during use. This can effectively improve the positioning speed of both during assembly and also avoid the problem of deviation during installation.

[0026] Working principle: This utility model relates to a lightweight, high-strength diesel engine housing. In use, the first reinforcing rib 6 and the second reinforcing rib 7 can respectively reinforce the part where the shaft hole 8 is located and the outer wall of the crankshaft cavity 2, thereby ensuring the overall strength of the main housing. When installing the housing cover, the positioning holes 10 and positioning posts 11 on the main housing can cooperate with the positioning posts 11 and positioning holes 10 on the housing cover to form a double reference positioning, thereby improving the positioning speed and accuracy during assembly. When installing corresponding diesel engine accessories, the accessories can be fixed to the accessory mounting base 5 by bolts and screw holes 12.

[0027] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A lightweight, high-strength diesel engine housing, comprising a main housing, characterized in that: The main housing includes an integrally connected heat dissipation cylinder (1) and crankshaft cavity (2). The top surface of the heat dissipation cylinder (1) has a through hole for communicating with the crankshaft cavity (2). A plurality of heat dissipation fins (9) are integrally connected to the outer surface of the heat dissipation cylinder (1). The main housing is characterized by further comprising: A shaft hole (8) is formed through the bottom of the crankshaft cavity (2), and two balance recesses (4) are provided on one side of the shaft hole (8). The reinforcing structure includes a plurality of reinforcing ribs (6) disposed on the inner wall of the crankshaft cavity (2) and a plurality of reinforcing ribs (7) disposed on the outer wall of the screw hole (12). The accessory installation mechanism is fixedly connected between the outer wall of the screw hole (12) and the outer wall of the heat dissipation cylinder (1); The positioning mechanism is fixedly connected to the top edge of the screw hole (12) and spaced apart from the mounting hole at the edge of the crankshaft cavity (2).

2. The lightweight, high-strength diesel engine housing according to claim 1, characterized in that: Multiple reinforcing ribs (6) are fixedly connected to the inner wall of the crankshaft cavity (2) and are distributed around the outer side of the shaft hole (8).

3. The lightweight, high-strength diesel engine housing according to claim 1, characterized in that: The second reinforcing rib (7) is fixedly connected to the outer wall of the crankshaft cavity (2) and is wavy in shape.

4. The lightweight, high-strength diesel engine housing according to claim 3, characterized in that: The cross-section of the second reinforcing rib (7) is triangular, and the top edge is arc-shaped.

5. A lightweight, high-strength diesel engine housing according to claim 1, characterized in that: The accessory mounting mechanism includes an accessory mounting seat (5) integrally connected to the heat sink (1) and the crankshaft cavity (2). The accessory mounting seat (5) has multiple screw holes (12) on its side wall away from the crankshaft cavity (2). The accessory mounting seat (5) also has multiple weight reduction holes (13) through it.

6. The lightweight, high-strength diesel engine housing according to claim 1, characterized in that: The positioning mechanism includes a protrusion (3) fixedly connected to the top edge of the screw hole (12), a positioning post (11) fixedly installed on the top of the protrusion (3), and a positioning hole (10) located on one side of the positioning post (11) is opened on the top of the protrusion (3).

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