Power system and silage harvester

Abstract

The utility model relates to the field of silage maize harvesters, and discloses a power system and a silage maize harvester. The power system comprises a heat dissipation device which is provided with a heat dissipation frame and a filter screen, a heat dissipation device and a heat dissipation fan which are installed on the heat dissipation frame; the dust removal device is used for removing impurities accumulated on the filter screen of the heat dissipation device; and the air inlet device is provided with an air filter and a flow guide channel, and the flow guide channel is used for guiding air filtered by the filter screen of the heat dissipation device into the air filter. The silage maize harvester comprises the power system. The air filtered by the filter screen of the heat dissipation device is guided to the air filter through the flow guide channel, the dust removal device is arranged on the filter screen, the filter screen is used for replacing an air prefilter, the cleanliness of the air output by the air inlet device is guaranteed, the air inlet device only needs to regularly maintain the air filter used for secondary filtering, and the air inlet device is simple in structure and convenient to use. Therefore, the problem that the air inlet device of the power system of the silage maize harvester needs to be cleaned and maintained frequently is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of silage machines, and specifically relates to a power system and a silage machine. Background Art

[0002] Silage harvesters or green fodder harvesters are agricultural machinery equipment mainly used to harvest green grass, oats, beet stems and leaves and other low-lying green crops. The power system of the silage harvester mainly includes the engine, air intake device, exhaust device and heat dissipation device. The air intake device is mainly composed of an air intake pipe, an air pre-filter and an air filter, which is used to provide clean air for the engine. After being filtered twice by the air pre-filter and the air filter, the air enters the engine through the air intake pipe and is mixed with the fuel for combustion. The heat dissipation device is mainly composed of a filter, a radiator and a cooling fan, which is used to provide a circulating cooling medium for the engine.

[0003] In the prior art, the working environment of the silage machine is harsh, and the air is mixed with a lot of impurities such as dust and grass clippings. In order to ensure the heat dissipation performance and stability of the heat dissipation device, a dust removal device is usually installed on the filter net, such as patent EP481203B1. However, there is no effective countermeasure for the air intake device. Impurities in the air can easily clog the air pre-filter, resulting in frequent maintenance cycles and increasing the maintenance time of the silage machine. In addition, the air intake device is usually installed on the top of the power cabin and is bulky, which can easily block the driver's line of sight and affect the overall appearance of the silage machine. Utility Model Content

[0004] The purpose of the present application is to provide a power system and a silage machine, which are used to solve the problem that the air intake device of the silage machine's power system needs frequent cleaning and maintenance, so as to extend the maintenance cycle, reduce the maintenance time, and improve the user experience.

[0005] In order to achieve the above-mentioned object, the present application provides a power system in a first aspect, comprising:

[0006] A heat dissipation device, comprising a heat dissipation frame and a filter, a radiator and a heat dissipation fan mounted on the heat dissipation frame;

[0007] A dust removal device, used to remove impurities accumulated on the filter screen of the heat dissipation device;

[0008] The air intake device is provided with an air filter and a guide channel, wherein the guide channel is used to guide the air filtered by the filter screen of the heat dissipation device into the air filter.

[0009] In some embodiments, the air intake device further comprises:

[0010] Air filter, used for secondary filtration of the inhaled air;

[0011] An air intake housing is mounted on a heat dissipation frame of the heat dissipation device;

[0012] An air guide member communicating with the inner cavity of the air intake housing and the cavity between the filter screen and the radiator;

[0013] The air guide member is combined with the air intake housing to form the guide channel, which guides the air filtered by the filter to the air filter.

[0014] In some embodiments, the air intake housing is mounted on the top of the heat dissipation frame, and the air guide is located at the bottom of the air intake housing and extends downward into the cavity between the filter screen and the radiator.

[0015] In some embodiments, the air filter is embedded in the air intake housing, and the air intake device further includes:

[0016] A first sealing ring, used for sealing the gap between the housing of the air filter and the air intake housing;

[0017] The second sealing ring is used to seal the gap between the air outlet of the air filter and the air intake housing.

[0018] In some embodiments, the dust removal device comprises:

[0019] A transmission shaft is mounted on the heat dissipation frame of the heat dissipation device along the air flow direction;

[0020] A dust removal brush assembly is drivingly connected to the transmission shaft and is attached to the filter screen of the heat dissipation device;

[0021] The driving assembly is in driving connection with the transmission shaft and is used for driving the dust removal brush assembly to rotate along the transmission shaft.

[0022] In some embodiments, the dust brush assembly is attached to the leeward side of the filter and is located in the cavity between the filter and the radiator, and / or the drive assembly is mounted on the heat dissipation frame and is located in the cavity between the filter and the radiator.

[0023] In some embodiments, the filter screen of the heat dissipation device is raised and tilted in the opposite direction of air flow, and the dust removal brush assembly is tilted relative to the transmission shaft and fits the filter screen.

[0024] In some embodiments, the dust removal device further comprises:

[0025] A dust hood is arranged parallel to the dust brush assembly and spaced apart on both sides of the filter screen, the dust hood is in driving connection with the transmission shaft, and the driving assembly drives the dust hood and the dust brush assembly to rotate synchronously;

[0026] A dust removal fan, used for forming a negative pressure in the space between the dust hood and the filter;

[0027] A dust removal pipe connects the end of the dust hood and the air suction port of the dust removal fan.

[0028] In some embodiments, the dust removal brush assembly includes:

[0029] A dust removal brush, comprising a dust removal rod and bristles arranged on the dust removal rod, wherein the bristles pass through the filter screen;

[0030] A dust cover is arranged on a side of the dust brush away from the filter screen;

[0031] A counterweight bar, used for balancing the weight of the dust removal brush and the dust removal cover;

[0032] The dust removal brush, the dust removal cover and the counterweight bar extend radially along the rotation center of the dust removal brush assembly.

[0033] In some embodiments, the bristles pass through the filter and continue to extend 4-8 mm.

[0034] In some embodiments, the drive assembly comprises:

[0035] A hydraulic motor is mounted on the heat dissipation frame of the heat dissipation device;

[0036] A first gear, sleeved on an output end of the hydraulic motor;

[0037] The second gear is sleeved on the transmission shaft and meshes with the first gear.

[0038] A second aspect of the present application provides a silage machine, comprising a power cabin and the above-mentioned power system installed in the power cabin.

[0039] Compared with the prior art, the beneficial effects of this application are:

[0040] The present application guides the air filtered by the filter screen of the heat dissipation device to the air filter through a guide channel, and arranges a dust removal device on the filter screen to realize the structural coupling of the heat dissipation device and the air intake device, and uses the filter screen to replace the air pre-filter and ensure the cleanliness of the air output by the air intake device, so that the air intake device only needs to perform regular maintenance on the air filter used for secondary filtration, thereby solving the problem that the air intake device of the power system of the silage machine needs frequent cleaning and maintenance, thereby extending the maintenance cycle, reducing the maintenance time, and improving the user experience.

[0041] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0043] Figure 1 This is a structural diagram of the power system of a specific implementation method of this application.

[0044] Figure 2 This is a structural diagram of the air intake device of the power system according to a specific embodiment of the present application.

[0045] Figure 3 This is a structural diagram of a dust removal device of a power system according to a specific embodiment of the present application.

[0046] Figure 4 for Figure 3 Enlarged view of point A.

[0047] Explanation of the reference numerals: heat dissipation device 1, heat dissipation frame 11, filter 12, radiator 13, cooling fan 14, dust removal device 2, transmission shaft 21, dust removal brush assembly 22, dust removal brush 221, dust removal cover 222, counterweight bar 223, drive assembly 23, hydraulic motor 231, first gear 232, second gear 233, dust suction cover 24, dust removal fan 25, dust removal pipe 26, adapter plate 27, pipe connecting seat 28, air intake device 3, air filter 31, air intake housing 32, air guide 33, first sealing ring 34, second sealing ring 35, engine 4. DETAILED DESCRIPTION

[0048] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0049] like Figures 1 to 4 As shown, a power system comprises:

[0050] The heat dissipation device 1 is provided with a heat dissipation frame 11 and a filter 12, a radiator 13 and a heat dissipation fan 14 installed on the heat dissipation frame 11;

[0051] The dust removal device 2 is used to remove impurities accumulated on the filter screen 12 of the heat dissipation device 1;

[0052] The air intake device 3 is provided with an air filter 31 and a guide channel, and the guide channel is used to guide the air filtered by the filter screen 12 of the heat dissipation device 1 into the air filter 31.

[0053] In the present application, the heat dissipation device 1 uses the cooling fan 14 to suck air to dissipate heat from the radiator 13. After being filtered by the filter 12, the air enters the cavity between the filter 12 and the radiator 13. A part of the air flows through the radiator 13 for heat dissipation, and the other part enters the air filter 31 through the guide channel for secondary filtration, thereby providing clean air for the engine 4. Since the filter 12 of the heat dissipation device 1 acts as an air pre-filter for the air intake device 3, there is no need to set up an additional air pre-filter. At the same time, the dust removal device 2 on the filter 12 can automatically remove impurities on the filter 12, so that the air filter 31 used for secondary filtration on the air intake device 3 only needs to be cleaned and maintained when it is blocked, thereby solving the problem that the air intake device 3 of the power system of the silage machine needs to be frequently cleaned and maintained, thereby extending the maintenance cycle, reducing the maintenance time, and improving the user experience. In addition, since the air pre-filter is cancelled, the size of the air intake device 3 is reduced. Even if it is still set on the top of the power engine room, it can reduce the impact on the driver's field of vision and improve the aesthetics of the vehicle layout.

[0054] In some embodiments, the filter 12, the radiator 13 and the cooling fan 14 of the heat dissipation device 1 are sequentially arranged on the heat dissipation frame 11 along the air flow direction. The dust removal device 2 and the air intake device 3 are installed on the heat dissipation frame 11.

[0055] like Figure 2 As shown, specifically, the air intake device 3 also includes:

[0056] An air filter 31, used for secondary filtering of the inhaled air;

[0057] The air inlet housing 32 is mounted on the heat dissipation frame 11 of the heat dissipation device 1;

[0058] The air guide 33 is connected to the inner cavity of the air intake housing 32 and the cavity between the filter screen 12 and the radiator 13;

[0059] The air guide member 33 and the air intake housing 32 are combined to form a guide channel to guide the air filtered by the filter screen 12 to the air filter 31 .

[0060] In the present application, the air filter 31 is provided with an air inlet and an air outlet, and the air inlet is located in the inner cavity of the air inlet housing 32. After being filtered by the filter 12, the air enters the cavity between the filter 12 and the radiator 13, and part of the air enters the inner cavity of the air inlet housing 32 through the air guide 33, and then flows into the air filter 31.

[0061] Furthermore, the air intake housing 32 is mounted on the top of the heat dissipation frame 11, and the air guide 33 is located at the bottom of the air intake housing 32 and extends downward into the cavity between the filter screen 12 and the radiator 13. The top of the air intake housing 32 is arranged so that the air flowing into the air filter 31 is in an ascending channel during the entire flow process, which is conducive to the precipitation of impurities in the air, improves the cleanliness of the air, and further extends the maintenance cycle of the air filter 31.

[0062] Furthermore, the air filter 31 is embedded in the air intake housing 32, and the air intake device 3 also includes:

[0063] A first sealing ring 34 is used to seal the gap between the housing of the air filter 31 and the air intake housing 32;

[0064] The second sealing ring 35 is used to seal the gap between the air outlet of the air filter 31 and the air intake housing 32 .

[0065] In some embodiments, the air filter 31 is fixed to the inner cavity of the air intake housing 32 through a mounting frame. One end housing and the air outlet of the air filter 31 extend out of the air intake housing 32 from both ends, and a first sealing ring 34 and a second sealing ring 35 are provided accordingly to ensure the sealing of the air intake housing 32. The bottom of the air intake housing 32 is open, and the air guide 33 is an air guide plate fixed at the opening, and the air guide plate extends downward into the leeward side of the filter screen 12 of the heat dissipation device 1.

[0066] like Figure 3 , Figure 4 As shown, specifically, the dust removal device 2 includes:

[0067] The transmission shaft 21 is mounted on the heat dissipation frame 11 of the heat dissipation device 1 along the air flow direction;

[0068] The dust removal brush assembly 22 is connected to the transmission shaft 21 and is attached to the filter screen 12 of the heat dissipation device 1;

[0069] The driving assembly 23 is connected to the transmission shaft 21 and is used to drive the dust removal brush assembly 22 to rotate along the transmission shaft 21 .

[0070] In the present application, the driving assembly 23 drives the transmission shaft 21 to rotate, driving the dust brush assembly 22 to rotate on the surface of the filter 12 and sweep away the impurities adsorbed on the filter 12, that is, the filter 12 is fixed and the dust brush assembly 22 rotates. Compared with the solution in the prior art in which the filter 12 rotates and the dust brush assembly 22 is fixed, the dust brush assembly 22 of the present application has a better cleaning effect on the grass clippings on the filter 12, ensuring that the air intake of the filter 12 is unobstructed.

[0071] Furthermore, the dust brush assembly 22 is attached to the leeward side of the filter 12 and is located in the cavity between the filter 12 and the radiator 13, and the drive assembly 23 is mounted on the heat dissipation frame 11 and is located in the cavity between the filter 12 and the radiator 13. The dust brush assembly 22 is located in the cavity between the filter 12 and the radiator 13, and the filter 12 encloses the rotating dust brush assembly 22, which can prevent the rotating dust brush assembly 22 from getting entangled with foreign objects such as vines in the working environment of the silage machine, thereby improving the reliability and safety of the equipment. The drive assembly 23 is located in the cavity between the filter 12 and the radiator 13, and the filter 12 blocks foreign objects and impurities in the working environment, which can prevent foreign objects and impurities from affecting the normal operation of the drive assembly 23, thereby further improving the reliability of the equipment.

[0072] Furthermore, the filter screen 12 of the heat sink 1 is raised and tilted in the opposite direction of the air flow, and the dust brush assembly 22 is tilted relative to the drive shaft 21 and fits the filter screen 12. Compared with the vertically arranged filter screen 12, the inclined filter screen 12 makes it easier for the adsorbed impurities to fall off when the dust brush assembly 22 rotates and sweeps over its surface, thereby improving the cleaning effect of the dust brush assembly 22 on the filter screen 12. In addition, when the dust removal device 2 is arranged in the cavity between the filter screen 12 and the radiator 13, the inclined filter screen 12 can further reduce the size of the heat sink 1 and improve the flexibility of the arrangement of the power system on the silo.

[0073] Further, the dust removal device 2 also includes:

[0074] The dust hood 24 is arranged parallel to the dust brush assembly 22 and spaced apart on both sides of the filter screen 12. The dust hood 24 is in driving connection with the transmission shaft 21. The driving assembly (23) drives the dust hood and the dust brush assembly (22) to rotate synchronously.

[0075] The dust removal fan 25 is used to form a negative pressure in the space between the dust hood 24 and the filter screen 12;

[0076] The dust removal pipe 26 connects the end of the dust hood 24 and the air suction port of the dust removal fan 25 .

[0077] In the present application, the dust removal fan 25 extracts the air inside the dust hood 24 through the dust removal pipe 26, and forms a negative pressure inside the dust hood 24. The dust hood 24 and the dust brush assembly 22 rotate together with the transmission shaft 21. The dust hood 24 sucks in impurities such as dust and grass clippings swept off the filter 12 by the dust brush assembly 22 through negative pressure, and transports them to the exhaust port of the dust removal fan 25 through the dust removal pipe 26 for spraying out. The rotating dust brush assembly 22 cooperates with the dust hood 24 with negative pressure to sweep and suck, and jointly removes impurities on the filter 12, further improving the cleaning effect of the dust removal device 2 on the filter 12, ensuring that the filter 12 has unobstructed air intake, thereby improving the heat dissipation performance and stability of the heat dissipation device 1, and ensuring the air cleanliness and air intake of the air intake device 3. Of course, the setting of the dust hood 24 also prevents the swept impurities from continuing to diffuse in the air, causing the surrounding environment to deteriorate.

[0078] Specifically, the dust removal brush assembly 22 includes:

[0079] The dust removal brush 221 is provided with a dust removal rod and bristles arranged on the dust removal rod;

[0080] A dust cover 222 is provided on a side of the dust brush 221 away from the filter screen 12;

[0081] A counterweight bar 223, used to balance the weight of the dust removal brush 221 and the dust removal cover 222;

[0082] The dust removal brush 221 , the dust removal cover 222 and the counterweight bar 223 extend radially along the rotation center of the dust removal brush assembly 22 .

[0083] In the present application, the dust brush assembly 22 is sleeved on the transmission shaft 21 through the through hole at the rotation center, and can rotate freely with the transmission shaft 21. The dust brush 221 is strip-shaped, and a plurality of strips are arranged around the rotation center. The bristles of the dust brush 221 are attached to the surface of the filter 12. When the dust brush assembly 22 is arranged on the leeward side of the filter 12, the dust cover 222 can prevent the impurities swept away by the bristles from continuing to flow backward with the airflow and enter the radiator 13 or the air intake device 3. When the dust removal device 2 is provided with a dust hood 24, the dust hood 222 can also prevent the air from flowing toward the dust hood 24, so that the negative pressure of the dust hood 24 can fully absorb the impurities swept away by the bristles. The counterweight bar 223 can balance the weight of the dust brush 221 and the dust hood 222, eliminate the imbalance generated when the dust brush assembly 22 rotates, and achieve smooth rotation.

[0084] Furthermore, the bristles pass through the filter 12 and continue to extend 4-8 mm. On the one hand, the bristles passing through the filter 12 can enable the bristles to sweep the filter 12 without dead angles when rotating, ensuring the cleaning effect of the bristles on the filter 12. On the other hand, when the dust removal device 2 is provided with a dust hood 24, the bristles can block the filter holes of the filter 12 to a certain extent, reduce the air flow into the dust hood 24, avoid affecting the air flow to the radiator 13 and the air intake device 3, and ensure the heat dissipation effect of the heat dissipation device 1 and the air intake of the air intake device 3.

[0085] Specifically, the driving assembly 23 includes:

[0086] The hydraulic motor 231 is mounted on the heat dissipation frame 11 of the heat dissipation device 1;

[0087] The first gear 232 is sleeved on the output end of the hydraulic motor 231;

[0088] The second gear 233 is sleeved on the transmission shaft 21 and meshes with the first gear 232 .

[0089] In the present application, the number of teeth of the first gear 232 is usually smaller than the number of teeth of the second gear 233. The hydraulic motor 231 is driven to rotate by an external hydraulic circuit, and the transmission shaft 21 is driven to rotate through the deceleration of the first gear 232 and the second gear 233, and then the dust removal brush assembly 22 and the dust cover 24 are driven to rotate synchronously, so as to realize the rotation cleaning of the filter screen 12.

[0090] In some embodiments, the transmission shaft 21, the dust brush assembly 22 and the driving assembly 23 are all disposed in the cavity between the filter 12 and the radiator 13. The transmission shaft 21 is mounted on the heat dissipation frame 11 through a bearing seat and a bracket and is arranged centrally relative to the filter 12.

[0091] The dust brush assembly 22 is sleeved on the middle section of the transmission shaft 21. The dust brush 221, dust cover 222 and counterweight bar 223 of the dust brush assembly 22 are all arranged as a single bar, the dust cover 222 is arranged on the side of the dust brush 221 away from the filter 12, and the counterweight bar 223 is arranged on the side of the dust brush 221 symmetrical to the transmission shaft 21. The bristles of the dust brush 221 are attached to the leeward side of the filter 12.

[0092] The end of the dust hood 24 is installed on the end of the transmission shaft 21 through the adapter plate 27. The dust hood 24 is arranged in parallel with the dust brush 221 and is located on the windward side of the filter 12. The air suction hood is strip-shaped, and its length is slightly greater than the length of the dust brush 221. The dust removal pipe 26 is a corrugated pipe and is installed on the adapter plate 27 through the pipe connecting seat 28. When the dust hood 24 and the dust brush assembly 22 rotate together with the transmission shaft 21, the pipe connecting seat 28 rotates relative to the dust removal pipe 26, and the dust removal pipe 26 is fixed. One end of the dust removal pipe 26 is connected to the end of the dust hood 24, and the other end is connected to the suction port of the dust removal fan 25. The dust removal fan 25 is flexibly arranged according to the spatial structure of the power cabin.

[0093] The driving assembly 23 is arranged at the head end of the transmission shaft 21. The hydraulic motor 231 is mounted on the heat dissipation frame 11 through a bracket. The first gear 232 is sleeved on the output end of the hydraulic motor 231. The second gear 233 is sleeved on the transmission shaft 21 and meshes with the first gear 232.

[0094] In some embodiments, the hydraulic motor 231 of the dust removal device 2 drives the first gear 232 and the second gear 233 to rotate, driving the transmission shaft 21, the dust removal brush assembly 22 and the dust hood 24 to rotate together, so that the filter 12 of the heat dissipation device 1 is effectively cleaned; the dust removal fan 25 forms a negative pressure in the dust collection hood 24, and the dust collection hood 24 sucks in the dust and grass clippings swept off the surface of the filter 12 by the dust removal brush assembly 22 during rotation, and transports them to the exhaust port of the dust removal fan 25 through the dust removal pipe 26 for ejection, so as to ensure the heat dissipation performance and stability of the heat dissipation device 1, as well as the air cleanliness and air intake volume of the air intake device 3.

[0095] A silage machine comprises a power cabin and the above-mentioned power system installed in the power cabin.

[0096] In some embodiments, a mounting base is provided in the power cabin, and the power system includes a heat dissipation device 1, a dust removal device 2, an air intake device 3 and an engine 4. The dust removal device 2 and the air intake device 3 are mounted on the heat dissipation frame 11 of the heat dissipation device 1, and the heat dissipation frame 11 and the engine 4 are mounted on the mounting base of the power cabin. The radiator 13 of the heat dissipation device 1 is connected to the cooling circuit of the engine 4 through a pipeline. The air outlet of the air filter 31 of the air intake device 3 is connected to the air intake end of the engine 4 through a pipeline.

[0097] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0098] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0100] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A power system, characterized in that: The power system comprises: A heat dissipation device (1) is provided with a heat dissipation frame (11) and a filter (12), a radiator (13) and a heat dissipation fan (14) mounted on the heat dissipation frame (11); A dust removal device (2) for removing impurities accumulated on the filter screen (12) of the heat dissipation device (1); The air intake device (3) is provided with an air filter (31) and a guide channel, wherein the guide channel is used to guide the air filtered by the filter screen (12) of the heat dissipation device (1) into the air filter (31).

2. The power system according to claim 1, characterized in that: The air intake device (3) further comprises: An air filter (31) for secondary filtering of the inhaled air; An air intake housing (32) mounted on a heat dissipation frame (11) of the heat dissipation device (1); An air guide member (33) communicating with the inner cavity of the air intake housing (32) and the cavity between the filter screen (12) and the radiator (13); The air guide member (33) is combined with the air intake housing (32) to form the air guide channel, which guides the air filtered by the filter screen (12) to the air filter (31).

3. The power system according to claim 2, characterized in that: The air intake housing (32) is installed on the top of the heat dissipation frame (11), and the air guide (33) is located at the bottom of the air intake housing (32) and extends downward into the cavity between the filter screen (12) and the radiator (13).

4. The power system according to claim 2, characterized in that: The air filter (31) is embedded in the air intake housing (32), and the air intake device (3) further comprises: A first sealing ring (34) for sealing a gap between a housing of the air filter (31) and the air intake housing (32); The second sealing ring (35) is used to seal the gap between the air outlet of the air filter (31) and the air intake housing (32).

5. The power system according to any one of claims 1 to 4, characterized in that: The dust removal device (2) comprises: A transmission shaft (21) is mounted on a heat dissipation frame (11) of the heat dissipation device (1) along an air flow direction; A dust removal brush assembly (22) is drivingly connected to the transmission shaft (21) and is attached to the filter screen (12) of the heat dissipation device (1); A driving assembly (23) is drivingly connected to the transmission shaft (21) and is used to drive the dust removal brush assembly (22) to rotate along the transmission shaft (21).

6. The power system according to claim 5, characterized in that: The dust removal brush assembly (22) is attached to the leeward side of the filter (12) and is located in the cavity between the filter (12) and the radiator (13), and / or the drive assembly (23) is mounted on the heat dissipation frame (11) and is located in the cavity between the filter (12) and the radiator (13).

7. The power system according to claim 5, characterized in that: The dust removal device (2) further comprises: A dust hood (24) is arranged parallel to the dust brush assembly (22) and spaced apart on both sides of the filter screen (12); the dust hood (24) is transmission-connected to the transmission shaft (21); and the driving assembly (23) drives the dust hood (24) and the dust brush assembly (22) to rotate synchronously; A dust removal fan (25) for forming a negative pressure in the space between the dust hood (24) and the filter screen (12); A dust removal pipe (26) connects the end of the dust hood (24) and the air suction port of the dust removal fan (25).

8. The power system according to claim 5, characterized in that: The dust removal brush assembly (22) comprises: A dust removal brush (221) is provided with a dust removal rod and bristles arranged on the dust removal rod, wherein the bristles pass through the filter screen (12); A dust removal cover (222), which is arranged on a side of the dust removal brush (221) away from the filter screen (12); A counterweight bar (223) for balancing the weight of the dust removal brush (221) and the dust removal cover (222); The dust removal brush (221), the dust removal cover (222) and the counterweight bar (223) extend radially along the rotation center of the dust removal brush assembly (22).

9. The power system according to claim 5, characterized in that: The driving assembly (23) comprises: A hydraulic motor (231) is mounted on a heat dissipation frame (11) of the heat dissipation device (1); A first gear (232) is sleeved on an output end of the hydraulic motor (231); The second gear (233) is sleeved on the transmission shaft (21) and meshes with the first gear (232).

10. A silage machine, characterized in that: The silage machine includes a power cabin and a power system according to any one of claims 1 to 9 installed in the power cabin.

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