CN205206987U - Locomotive diesel engine organism - Google Patents

Abstract

The utility model provides a locomotive diesel engine body, the body is provided with a main shaft hole (1), a main oil passage (2), a camshaft hole (4), a cylinder hole (6), a high-temperature cooling water channel (13) and a high-temperature moisture Water channel (14) and cylinder liner cooling water channel (18), the high-temperature cooling water channel (13) is fixedly connected in the body, and is located between the camshaft hole (4) and the main oil channel (2), and the high-temperature cooling water channel ( 13), the high-temperature water channel (14), and the cylinder liner cooling channel (18) are interconnected to form a diesel engine cooling pipeline system. The utility model can reduce the overall occupied space of the diesel engine, and at the same time, effectively reduce the vibration of the cooling pipeline system of the diesel engine, and avoid the leakage or crack damage of the pipeline connection caused by vibration, so that the pipeline system of the diesel engine Safety and reliability are improved.

Description

A locomotive diesel engine body

technical field

The utility model relates to a diesel engine body, in particular to a locomotive diesel engine body used for dispatching a locomotive diesel engine at a medium speed.

Background technique

At present, the power of domestically developed diesel engines for calling locomotives is in the range of 800kw to 900kw. Due to their shortcomings such as low power, large shape, and serious leakage, they are far from meeting the requirements for the development of high-power locomotives, especially for high-power calling locomotives. For example, when the power of the diesel engine on the locomotive is 1250kw, the current locomotive diesel engine cannot be used.

In addition, since the existing high-temperature cooling channels on the diesel engines of locomotives are installed on the outer side of the diesel engine body, this increases the space occupied by the diesel engine as a whole and makes it difficult to disassemble. The vibration of the pipeline system makes it easy to leak or even break the pipeline at the pipeline connection.

Therefore, considering the above factors, if a new diesel engine body is redesigned and manufactured, it will undoubtedly increase the development and manufacturing costs, which is not conducive to the overall cost saving of the diesel engine.

Utility model content

The technical problem to be solved by the utility model is: aiming at the problems existing in the prior art, a locomotive diesel engine body is provided, which can reduce the overall occupied space of the diesel engine and improve the safety of the diesel engine pipeline system under the premise of ensuring the rigidity and strength of the body. and reliability.

The technical problem to be solved by the utility model is realized by adopting the following technical solutions: a locomotive diesel engine body, the body is provided with a main shaft hole, a main oil passage, a camshaft hole, a cylinder hole, a high temperature water channel and a cylinder liner cooling water channel, the The high-temperature water channel communicates with the cylinder liner cooling water channel, and a high-temperature cooling water channel fixedly connected in the body is also provided on the body. The high-temperature cooling water channel is located between the camshaft hole and the main oil channel, and communicates with the high-temperature water channel. .

Preferably, the high-temperature cooling channel is embedded in the body by integral casting with the body.

Preferably, the cross-sectional shape of the high-temperature cooling channel is fan-shaped.

Preferably, a high-temperature cooling channel sand cleaning hole is also provided on the body, and the high-temperature cooling channel sand cleaning hole communicates with the high-temperature cooling channel.

Preferably, the sand cleaning hole of the high-temperature cooling water channel is arranged at the free end and/or the output end of the machine body, and its outlet is located between the camshaft hole and the main oil passage.

Preferably, an oil return hole is provided at the bottom of the machine body.

Preferably, a main shaft bolt hole is provided beside the main shaft hole.

Preferably, the sides of the main shaft hole are fixedly connected with reinforcement ribs.

Preferably, the cylinder bore is composed of an upper cylinder bore and a lower cylinder bore, and the inner structure of the entire cylinder bore is a cylinder.

Preferably, the cylinder liner cooling water channel is arranged at a position tangent to the generatrix of the cylinder bore.

Compared with the prior art, the beneficial effect of the utility model is: because the high-temperature cooling water passage of the diesel engine is directly fixedly connected between the camshaft hole and the main oil passage in the body, and the high-temperature cooling water passage, the high-temperature moisture water passage, the cylinder The diesel engine cooling pipeline system is formed by the communication between the cooling water channels, which reduces the overall occupied space of the diesel engine. At the same time, it also effectively reduces the vibration of the diesel engine cooling pipeline system and avoids the leakage caused by the vibration of the pipeline connection. Or the problem of pipeline cracks ensures the safety and reliability of the diesel engine pipeline system.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of a locomotive diesel engine body of the utility model.

Fig. 2 is a sectional view taken along S-S direction in Fig. 1 .

Fig. 3 is a sectional view taken along line A-A in Fig. 2 .

Fig. 4 is a sectional view taken along the line B-B in Fig. 2 .

Marking names of parts in the picture: 1-spindle hole, 2-main oil passage, 3-high temperature cooling water channel sand cleaning hole, 4-camshaft hole, 5-body output end, 6-cylinder hole, 7-body free end, 8 -Intake regulator pipe, 9-air cavity, 10-spindle bolt hole, 11-branch oil passage, 12-cylinder bolt hole, 13-high temperature cooling water channel, 14-high temperature water channel, 15-baffle plate, 16-reinforcement Rib, 17-oil return hole, 18-cylinder liner cooling channel, 61-upper cylinder hole, 62-lower cylinder hole.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

A locomotive diesel engine body as shown in Figure 1 and Figure 2, its basic structure is "L" type, a number of cylinder holes 6 are arranged in the center of the top of the body, and a number of cylinder bolt holes 12 are arranged around each cylinder hole 6; The main shaft hole 1 is set in the middle, and the air cavity 9 is on the left side of the upper part of the body, and the air cavity 9 communicates with the intake regulator pipe 8; Below is the main oil passage 2, and several branch oil passages 11 of ￠20mm are respectively opened on the main oil passage 2 to provide lubrication for the main shaft.

Between the camshaft hole 4 and the main oil passage 2 is a high-temperature cooling water channel 13 with a wall thickness of 20mm. A high-temperature cooling water channel sand cleaning hole 3 is respectively set at the free end 7 of the body and the output end 5 of the body. The high-temperature cooling water channel The sand cleaning hole 3 communicates with the high-temperature cooling water channel 13, and its outlet is located between the camshaft hole 4 and the main oil channel 2, as shown in FIG. 1 . The high-temperature cooling water channel 13 is embedded in the machine body by integral casting with the machine body. Due to space constraints, the cross-sectional shape of the high-temperature cooling water channel 13 is designed to be fan-shaped. With this structure, on the one hand, the high-temperature cooling channel 13 can be used as a rib plate of the body, thereby increasing the tensile strength and rigidity of the body; on the other hand, since the high-temperature cooling channel 13 is located in the body, it There are high-temperature water channels 14 and cylinder liner cooling channels 18. The high-temperature cooling channels 13 communicate with the high-temperature water channels 14, and the high-temperature water channels 14 communicate with the cylinder liner cooling channels 18. The high-temperature cooling channels 13, high-temperature water channels 14. The cylinder liner cooling channels 18 jointly form the diesel engine cooling pipeline system. Therefore, the overall occupied space of the diesel engine can be reduced, and at the same time, the vibration of the cooling pipeline system of the diesel engine can be effectively reduced, and the leakage or cracking of the pipeline caused by vibration at the connection of the pipeline can be avoided, ensuring the operation of the pipeline system of the diesel engine safety and reliability. Wherein, the cylinder liner cooling water channel 18 is preferably arranged at a position tangent to the generatrix of the cylinder bore 6, as shown in Figure 4, its purpose is to reduce the cavitation of the cylinder liner by high temperature water and improve the cooling effect of the cylinder liner .

In order to ensure the rigidity and strength requirements of the body, the main shaft bolt of the body adopts the form of bottom thread fastening. Specifically, as shown in Fig. 2 and Fig. 3, a main shaft bolt hole 10 is provided on the side of the main shaft hole 1. During assembly, the main shaft bolt is installed in the main shaft bolt hole 10 of the body, thereby fixing the main bearing cover on the main shaft of the body. on the hole. Usually, the effective length of the stud screwed into the machine body of the spindle bolt is 1.5 times the thread diameter, and the length of the stud protruding from the main bearing cover is 1 times the thread diameter. The processing requirements of the bottom nut mounting surface are met. Simultaneously, increase the stiffening rib 16 that is fixedly connected near the side of each spindle hole 1 of the body, so that the thickness of the partition plate 15 at this place can be appropriately reduced, and its purpose is to increase the rigidity and strength of the body while also reducing the weight of. As shown in Fig. 2, several oil return holes 17 may be arranged at the bottom of the body, the purpose of which is to make the oil at the bottom of the body flow back into the oil pan as soon as possible. In addition, the cylinder bore 6 is composed of an upper cylinder bore 61 and a lower cylinder bore 62. The inner structure of the entire cylinder bore 6 is a cylindrical tube, the purpose of which is to increase the fluidity of cooling water in the cylinder and further improve the cooling effect of the cylinder.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. It should be noted that any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model , should be included within the protection scope of the present utility model.

Claims (10)

1. A locomotive diesel engine body, the body is provided with a main shaft hole (1), a main oil passage (2), a camshaft hole (4), a cylinder hole (6) and a high-temperature moisture water channel (14) and a cylinder liner cooling water channel (18), the high-temperature water channel (14) communicates with the cylinder liner cooling channel (18), characterized in that: the body is also provided with a high-temperature cooling channel (13) fixedly connected in the body, the high-temperature cooling The water passage (13) is located between the camshaft hole (4) and the main oil passage (2), and communicates with the high-temperature moisture water passage (14). 2. A locomotive diesel engine body according to claim 1, characterized in that: the high-temperature cooling water channel (13) is embedded in the body by integral casting with the body. 3. A locomotive diesel engine body according to claim 1 or 2, characterized in that: the cross-sectional shape of the high-temperature cooling channel (13) is fan-shaped. 4. A locomotive diesel engine body according to claim 1 or 2, characterized in that: the body is also provided with a high-temperature cooling waterway sand cleaning hole (3), and the high-temperature cooling waterway sand cleaning hole (3) is connected with the high-temperature The cooling water channels (13) communicate with each other. 5. A locomotive diesel engine body according to claim 4, characterized in that: the high-temperature cooling channel sand cleaning hole (3) is arranged at the free end (7) of the body and/or the output end (5) of the body, and its outlet It is located between the camshaft hole (4) and the main oil passage (2). 6. A locomotive diesel engine body according to claim 1 or 2, characterized in that: an oil return hole (17) is arranged at the bottom of the body. 7. A locomotive diesel engine body according to claim 1 or 2, characterized in that: a main shaft bolt hole (10) is provided beside the main shaft hole (1). 8. A locomotive diesel engine body according to claim 7, characterized in that: the side of the main shaft hole (1) is fixedly connected with reinforcing ribs (16). 9. A locomotive diesel engine body according to claim 1 or 2, characterized in that: the cylinder bore (6) is composed of an upper cylinder bore (61) and a lower cylinder bore (62), and the entire cylinder bore (6 ) The internal structure is a cylinder. 10. A locomotive diesel engine body according to claim 1 or 2, characterized in that the cylinder liner cooling water channel (18) is arranged at a position tangent to the generatrix of the cylinder bore (6).