Diesel engine and belt pulley housing device thereof

Abstract

The utility model discloses a diesel engine and a belt pulley housing device thereof, the belt pulley housing device comprises a main plate and a side plate arranged on the edge of the main plate in a transition mode, and a semi-sealing structure is formed between the main plate and the side plate. The mainboard is provided with a first protection area corresponding to a fan belt wheel, a second protection area corresponding to a generator belt wheel, a third protection area corresponding to a compressor belt wheel, a fourth protection area corresponding to a crankshaft belt wheel and a plurality of heat dissipation holes. A first support, a second support and a third support are fixedly connected between the diesel engine and the main board support. A semi-sealing structure formed by the main plate and the side plates is adopted, independent protection areas are arranged for the belt wheels, invasion of external impurities such as dust, water and oil dirt can be effectively prevented, the abrasion, aging and failure risks of the belt wheels and the belt are reduced, the stability and reliability of engine operation are remarkably improved, and the service life of the engine is prolonged. And the human body is prevented from being injured due to direct contact with the belt pulleys and the belt.

Description

TECHNICAL FIELD

[0001] The utility model belongs to diesel engine pulley technical field, concretely relates to a diesel engine and its pulley cover shell device. BACKGROUND

[0002] In the field of engineering machinery, as the core power source, the stability and reliability of diesel engine are crucial to the performance of the whole machine. However, in the conventional design, due to the limited space of the engine compartment and the complex design, the pulley of the diesel engine is often hidden in the engine compartment, and in order to save installation space and simplify the structure, the pulley cover is rarely used. Although this design meets the requirements of space and cost to some extent, it brings potential safety hazards and performance problems.

[0003] Specifically, the pulley and the belt connected thereto are high-speed rotating components, which are directly exposed to the external environment and are easily affected by dust, moisture, oil stains and other external factors, resulting in wear, aging and even failure. This not only affects the normal operation of the engine, but also may cause more serious mechanical failure. In addition, in some special models of engineering machinery, the pulley end of the engine is not connected to other elements such as fans and radiators, which means that the pulley and the belt are completely exposed during operation. Not only are they vulnerable to external environment, but also may pose a safety hazard to maintenance personnel. Once the high-speed rotating pulley and belt come into contact with personnel, it may cause serious injury accidents. In summary, there is an urgent need for a diesel engine and its pulley cover shell device. SUMMARY

[0004] To solve the above-mentioned technical problems in the prior art, on the one hand, the utility model provides a pulley cover shell device for diesel engine, which is arranged on one side of the diesel engine. The diesel engine is provided with a fan pulley, a generator pulley, a crankshaft pulley and a compressor pulley. The fan pulley, the generator pulley and the crankshaft pulley are connected by a first belt. The crankshaft pulley and the compressor pulley are connected by a second belt. The pulley cover shell device comprises a main plate and a side plate arranged on the edge of the main plate. A semi-sealed structure is formed between the main plate and the side plate. The main plate is provided with a first protection area corresponding to the fan pulley, a second protection area corresponding to the generator pulley, a third protection area corresponding to the compressor pulley and a fourth protection area corresponding to the crankshaft pulley. A plurality of heat dissipation holes are formed in the main plate. The diesel engine and the main plate support are fixedly connected by a first support, a second support and a third support.

[0005] Further, in the pulley cover device for a diesel engine, a first mounting hole is formed in the main plate between the first protection area and the second protection area, one end of the first support is fixed to the main plate through the fastener and the first mounting hole, and the other end is fixedly connected to the diesel engine through the fastener.

[0006] Further, in the pulley cover device for a diesel engine, a second mounting hole is formed in the main plate between the first protection area and the fourth protection area, one end of the second support is fixed to the main plate through the fastener and the second mounting hole, and the other end is fixedly connected to the diesel engine through the fastener.

[0007] Further, in the pulley cover device for a diesel engine, a third mounting hole is formed in the main plate between the third protection area and the fourth protection area, one end of the third support is fixed to the main plate through the fastener and the third mounting hole, and the other end is fixedly connected to the diesel engine through the fastener.

[0008] Further, in the pulley cover device for a diesel engine, a protrusion matched with the fan pulley is arranged at the first protection area.

[0009] As a specific embodiment, in the pulley cover device for a diesel engine, the heat dissipation holes are arranged in the fourth protection area and between the fourth protection area and the first protection area.

[0010] As a specific embodiment, in the pulley cover device for a diesel engine, reinforcing ribs are arranged on the first support, the second support and the third support.

[0011] On the other hand, the utility model also provides a diesel engine, the diesel engine includes the pulley cover device.

[0012] The diesel engine and the pulley cover device thereof have the following advantages and beneficial effects:

[0013] (1) The device has simple structure and is convenient to disassemble and assemble, adopts a semi-sealed structure formed by a main plate and a side plate, independently arranged protection areas are arranged for the fan pulley, the generator pulley, the compressor pulley and the crankshaft pulley, dust, moisture, oil stains and other external impurities can be effectively blocked, the wear, aging and failure risks of the pulleys and the belts are reduced, the stability and reliability of the engine operation are significantly improved, the device has good practicability, and the human body is prevented from directly contacting the high-speed running elements such as the pulleys and the belts, so that the human body is prevented from being hurt, and the device has good safety.

[0014] (2) The main plate of the device is provided with a heat dissipation hole, which specifically solves the heat dissipation problem of the high heat area, reduces the temperature in the engine compartment through air circulation, avoids performance degradation caused by overheating, and at the same time, three groups of supports are fixedly connected with the engine through different mounting holes to form a multi-point support structure, combined with the reinforcing rib design on the support, the installation strength and vibration resistance of the device are greatly improved, and the structural stability during long-term use is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only for further understanding of the embodiments of the present application and constitute a part of the present application. For those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings. In the drawings:

[0016] Figure 1 is a structural schematic view of the pulley cover device for the diesel engine of the present application;

[0017] Figure 2 is a side view of the pulley cover device for the diesel engine of the present application;

[0018] Figure 3 is a use state schematic view of the pulley cover device for the diesel engine of the present application.

[0019] Explanation of reference signs:

[0020] 1-main plate, 2-engine, 3-first belt, 4-fan pulley, 5-generator pulley, 6-compressor pulley, 7-second belt, 8-crank pulley, 9-third support, 10-fastener, 11-third protection area, 12-third mounting hole, 13-fourth protection area, 14-heat dissipation hole, 15-first protection area, 16-second protection area, 17-side plate, 18-protrusion, 19-first support, 20-second support, 21-first mounting hole, 22-second mounting hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] AsFigure 1 、 Figure 2 、 Figure 3 The utility model discloses a diesel engine and belt pulley casing device thereof.

[0023] On one hand, the utility model provides a kind of belt pulley casing device for diesel engine, and belt pulley casing device is set to diesel engine 2 one side, and diesel engine 2 one side is provided with fan pulley 4, generator pulley 5, crank pulley 8, compressor pulley 6, fan pulley 4, generator pulley 5, crank pulley 8 are connected by first belt 3 between each other, and crank pulley 8 is connected by second belt 7 between compressor pulley 6, and belt pulley casing device includes main plate 1, transition side plate 17 set to the edge of main plate 1, and half-sealing structure is formed between main plate 1 and side plate 17, which can block dust, moisture, oil stain etc. outside to a certain extent, to protect the effect of each belt pulley and belt in the inside, while again will not be completely closed, ensure certain heat dissipation and maintenance space, and main plate 1 is provided with the first protection area 15 corresponding to fan pulley 4, the second protection area 16 corresponding to generator pulley 5, the third protection area 11 corresponding to compressor pulley 6, the fourth protection area 13 corresponding to crank pulley 8, and main plate 1 is provided with a plurality of heat dissipation holes 14, and first support 19, second support 20, third support 9 are fixedly connected between diesel engine 2 and the support of main plate 1.

[0024] Further, in the belt pulley casing device for diesel engine of the utility model, first mounting hole 21 is opened on the main plate 1 between the first protection area 15 and the second protection area 16, and one end of first support 19 is fixed to main plate 1 by the cooperation of fastener 10 and first mounting hole 21, and the other end is fixedly connected to diesel engine 2 by fastener 10.

[0025] Further, in the belt pulley casing device for diesel engine of the utility model, second mounting hole 22 is opened on the main plate 1 between the first protection area 15 and the fourth protection area 13, and one end of second support 20 is fixed to main plate 1 by the cooperation of fastener 10 and second mounting hole 22, and the other end is fixedly connected to diesel engine 2 by fastener 10.

[0026] Further, in the belt pulley casing device for diesel engine of the utility model, third mounting hole 12 is opened on the main plate 1 between the third protection area 11 and the fourth protection area 13, and one end of third support 9 is fixed to main plate 1 by the cooperation of fastener 10 and third mounting hole 12, and the other end is fixedly connected to diesel engine 2 by fastener 10.

[0027] Further, in the pulley cover device for diesel engine, the first protection area 15 is provided with a protrusion 18 matched with the fan pulley 4, the shape and size of the protrusion 18 are adapted to the fan pulley 4, so that the fan pulley 4 can be better surrounded and protected, and the fan pulley 4 is prevented from being impacted by external sundries during high-speed operation, and the fan pulley 4 can also be positioned to ensure the stability of operation.

[0028] As a specific embodiment, in the pulley cover device for diesel engine, the heat dissipation hole 14 is arranged between the fourth protection area 13 and the first protection area 15, the crank pulley 8 generates a large amount of heat during operation, the fourth protection area 13 corresponds to the crank pulley 8, and the heat dissipation hole 14 arranged at the position can timely dissipate the heat generated by the crank pulley 8, so that the performance of the engine 2 is not affected by heat accumulation.

[0029] As a specific embodiment, in the pulley cover device for diesel engine, the first support 19, the second support 20 and the third support 9 are all provided with reinforcing ribs, the reinforcing ribs can be arranged along the length direction or the width direction of the support, so that the structural strength of each support is increased, the support can withstand greater external force and vibration, and the reliability of the entire cover device is improved.

[0030] On the other hand, the utility model also provides a diesel engine, the diesel engine includes above-mentioned pulley cover device.

[0031] The installation process of the pulley cover device for diesel engine is as follows:

[0032] During the installation process, first, each protection area on the main plate 1 is corresponded to the position of the corresponding pulley, the fastener 10 on the first support 19, the second support 20 and the third support 9 is respectively fixedly connected with the first installation hole 21, the second installation hole 22 and the third installation hole 12 of the main plate 1 and the diesel engine 2, so that the main plate 1 is stably installed on one side of the diesel engine 2, the distance between the installed main plate 1 and each pulley is kept at 3-10 mm, and each pulley is prevented from being damaged due to collision and friction with the main plate 1 during operation.

[0033] In summary, compared with the prior art, the diesel engine and the pulley cover device thereof have the following advantages and beneficial effects:

[0034] (1) The device has simple structure and is convenient to disassemble and assemble, adopts the semi-sealed structure formed by the main plate 1 and the side plate 17, and independently arranged protection zones are arranged for the fan pulley 4, the generator pulley 5, the compressor pulley 6 and the crankshaft pulley 8, so that the invasion of external impurities such as dust, moisture and oil stains can be effectively blocked, the wear, aging and failure risks of the pulleys and the belt are reduced, the stability and reliability of the engine 2 operation are significantly improved, the device has good practicability, and the human body is prevented from directly contacting the high-speed running elements such as the pulleys and the belt, so that the human body is prevented from being hurt, and the device has good safety;

[0035] (2) The main plate 1 of the device is provided with the heat dissipation holes 14, the heat dissipation problem of the high-heat area is solved, the temperature in the cabin of the engine 2 is reduced through air circulation, the performance attenuation caused by overheating is avoided, meanwhile, the three groups of supports are fixedly connected with the engine 2 through different mounting holes to form a multi-point support structure, the installation strength and the anti-vibration capability of the device are greatly improved in combination with the reinforcing rib design on the supports, and the structural stability in long-term use is ensured.

[0036] It should be noted that, in this document, unless otherwise explicitly specified and limited, the term "connection" or its synonyms should be understood in a broad sense, for example, the "connection" can be a fixed connection or a detachable connection, can be a mechanical connection or an electrical connection, can be a direct connection or an indirect connection through an intermediate medium, and can be an internal connection of two elements or an interaction relationship between two elements, and those skilled in the art can understand the specific meaning of the above-mentioned term in the utility model according to the specific situation. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. At the same time, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to the process, method, article or equipment. In addition, "front", "back", "left", "right", "up", "down" and the like in this document are referred to the placement state shown in the drawings.

[0037] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A pulley cover device for a diesel engine, the pulley cover device being provided on one side of the diesel engine, the one side of the diesel engine being provided with a fan pulley, a generator pulley, a crank pulley, and a compressor pulley, the fan pulley, the generator pulley, and the crank pulley being connected to each other by a first belt, and the crank pulley and the compressor pulley being connected to each other by a second belt, characterized in that, The pulley cover device comprises a main plate, a side plate arranged at the edge of the main plate, a semi-sealed structure is formed between the main plate and the side plate, the main plate is provided with a first protection area corresponding to the fan pulley, a second protection area corresponding to the generator pulley, a third protection area corresponding to the compressor pulley, and a fourth protection area corresponding to the crankshaft pulley, a plurality of heat dissipation holes are arranged on the main plate, and the diesel engine and the main plate support are fixedly connected with a first support, a second support and a third support.

2. The pulley housing device for a diesel engine according to claim 1, characterized by, A first mounting hole is arranged on the main plate between the first protection area and the second protection area, one end of the first support is fixed to the main plate through the cooperation of the fastener and the first mounting hole, and the other end is fixedly connected to the diesel engine through the fastener.

3. The pulley housing device for a diesel engine according to claim 1, characterized by, A second mounting hole is arranged on the main plate between the first protection area and the fourth protection area, one end of the second support is fixed to the main plate through the cooperation of the fastener and the second mounting hole, and the other end is fixedly connected to the diesel engine through the fastener.

4. The pulley housing device for a diesel engine according to claim 1, characterized by, A third mounting hole is arranged on the main plate between the third protection area and the fourth protection area, one end of the third support is fixed to the main plate through the cooperation of the fastener and the third mounting hole, and the other end is fixedly connected to the diesel engine through the fastener.

5. The pulley housing device for a diesel engine according to claim 1, characterized by, The first protection area is provided with a protrusion matched with the fan pulley.

6. The pulley housing device for a diesel engine according to claim 1, characterized by, The heat dissipation holes are arranged between the fourth protection area, the fourth protection area and the first protection area.

7. The pulley housing device for a diesel engine according to claim 1, characterized by, The first support, the second support and the third support are all provided with reinforcing ribs.

8. A diesel engine characterized by The diesel engine comprises the pulley cover device according to any one of claims 1-7.

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