CN114097408B - Harvester - Google Patents

Abstract

The present disclosure provides a harvester comprising: a vehicle body including a frame and a plurality of tires disposed under the frame; and the spraying system comprises a plurality of spraying devices which are arranged on the frame and correspond to the tires, the spraying direction of the spraying devices is adjustable, the spraying system has a first working mode and a second working mode, in the first working mode, the spraying system is configured to spray water to the corresponding tires to clean soil attached to the tires, and in the second working mode, the spraying system is configured to spray water to the periphery of the vehicle body to inhibit dust generated during the operation of the harvester. The harvester provided by the disclosure can clean soil attached to tires during operation in a wet field and can inhibit dust generated in the operation process during operation in a dry field.

Description

Harvester

technical field

The present disclosure relates to the field of agricultural machinery, in particular to a harvester.

Background technique

The main purpose of the combine harvester is to complete the harvesting, threshing, separation of stems, removal of debris and other processes of cereal crops at one time, and obtain grain directly from the field. The use of combine harvesters has greatly improved agricultural production efficiency, thereby saving manpower and material resources, reducing the burden on farmers, and also avoiding losses caused by untimely harvesting in rainy weather.

When a wheeled combine harvester is operating in a wet field or even a muddy field, the tires may be covered with soil in a short period of time. This phenomenon is especially obvious in fields with relatively sticky soil. Tires covered with mud will increase the burden on the harvester when walking, seriously waste the power output by the engine, and increase energy consumption. Therefore, the tires need to be cleaned frequently.

When the wheeled combine harvester is working in a dry field, it will cause a lot of dust, which will pollute the environment and the atmosphere, and the workers will also be injured due to inhalation of the dust.

In the related technology known to the inventor, on the one hand, the harvester lacks a corresponding tire desilting device, and the harvester needs to stop working first, and then manually clean up the soil on the tire, which is very time-consuming and laborious, which not only affects the working efficiency of the harvester, And increase the working intensity of operators; on the other hand, although some harvesters are equipped with dust suppression devices, their dust suppression devices are relatively complicated, and the manufacturing and maintenance costs are high, which is not conducive to popularization and use.

Contents of the invention

The purpose of the present disclosure is to provide a harvester that can clean up the soil attached to the tires when working in a wet field, and can suppress the dust generated during the working process when working in a dry field.

The present disclosure provides a harvester, comprising:

a vehicle body comprising a frame and a plurality of tires disposed beneath said frame; and

A spraying system, including a plurality of spraying devices installed on the vehicle frame and corresponding to the plurality of tires, the spraying direction of the spraying device is adjustable, and the spraying device has a first working mode and the second working mode, in the first working mode, the spraying device is configured to spray water on the corresponding tires to clean up the mud adhering to the tires, in the second working mode, The spraying device is configured to spray around the vehicle body to suppress the dust generated when the harvester is working.

According to some embodiments of the present disclosure, the harvester further includes a mud removal device, the mud removal device includes a plurality of mud removal parts installed on the vehicle frame and corresponding to the plurality of tires, the mud removal The mud part is configured to clean up mud attached to the tire.

According to some embodiments of the present disclosure, the mud removing part includes a scraper configured to scrape off mud attached to the tire, the scraper has a mud scraping end disposed toward the tire, The distance between the mud scraping end and the tire along the extending direction of the scraper is adjustable.

According to some embodiments of the present disclosure, the mud removal part further includes: a scraper bracket connected to the vehicle frame and a connecting piece, the scraper has a first installation hole, and the scraper bracket has a The first installation hole corresponds to the second installation hole, and the connecting piece passes through the first installation hole and the second installation hole to install the scraper on the scraper bracket. The size of at least one of the first mounting hole and the second mounting hole in at least one direction is larger than the size of the connecting piece, so as to adjust the extension of the mud scraping end and the tire along the scraper. The activity gap for the distance of the direction.

According to some embodiments of the present disclosure, the included angle of the scraper relative to the horizontal plane is adjustable.

According to some embodiments of the present disclosure, the sprinkler system further includes:

a water tank installed on the vehicle frame;

a water supply pipeline installed on the vehicle frame and connected between the water tank and the spraying device;

a pumping device mounted on the water supply line and configured to supply water from the water tank to the sprinkler device; and

The pressure regulating device is installed on the water supply pipeline and is configured to adjust the pressure of the water supply pipeline to adjust the water outlet pressure of the spraying device.

According to some embodiments of the present disclosure, the sprinkler system further includes a pressure detection device disposed on the water supply pipeline, and the pressure detection device is configured to detect the pressure of the water supply pipeline and provide the pressure of the water supply pipeline The display information of the pressure.

According to some embodiments of the present disclosure, the spray system further includes a filtering device arranged on the water supply pipeline to filter impurities in the water.

According to some embodiments of the present disclosure, the shower device includes a shower head, the shower head includes a shower head body, an atomizing part for atomizing the water flow, and a working mode switching part, and the shower head body has a first spray channel and The second spraying channel, the atomizing part is arranged on the second spraying channel, the position of the working mode switching part is adjustable on the spray head body and configured to be selectively turned on or off The first spray channel and the second spray channel, the spray device is configured such that: in the first working mode, the first spray channel is connected and the second spray channel is disconnected, The spray head sprays water. In the second working mode, the second spray channel is connected and the first spray channel is disconnected, and the spray head sprays water.

According to some embodiments of the present disclosure, the spraying device includes a first spray head and a second spray head that can be selectively turned on or off, and the first spray head does not include an atomizing part for atomizing the water flow, so The second spray head includes an atomizing part for atomizing the water flow, and the spray device is configured such that: in the first working mode, the first spray head is turned on and the second spray head is turned off, and the first spray head is turned off. One spray head sprays water, and in the first working mode, the second spray head is opened and the first spray head is closed, and the second spray head sprays water.

In the harvester provided by the embodiments of the present disclosure, the spraying direction of the spraying device is adjustable, and the spraying system has a first working mode that can spray water on tires and a second working mode that can spray water around the vehicle body.

When the harvester is working in wet fields or even muddy fields, adjust the spraying direction of the spraying device so that it is aimed at the tires to spray water, and the less viscous soil attached to the tires can fall off automatically under the infiltration of water flow without stopping the machine Manual removal is beneficial to reduce the power output and energy consumption of the harvester engine, and improve the working efficiency of the harvester.

When the harvester is working in a dry field, adjust the spraying direction of the spraying device to spray water mist around the car body, and increase the water supply pressure of the spraying system. Under high pressure, the formed water curtain wraps The harvester can prevent flying dust from flying and have a good dust suppression effect, which is beneficial to reduce the pollution to the environment and the atmosphere, and to reduce the damage to the health of the workers.

Other features of the present disclosure and advantages thereof will become apparent through the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

Description of drawings

The drawings described here are used to provide a further understanding of the present disclosure, and constitute a part of the present application. The schematic embodiments of the present disclosure and their descriptions are used to explain the present disclosure, and do not constitute improper limitations to the present disclosure. In the attached picture:

Fig. 1 is a structural schematic diagram of a harvester according to some embodiments of the present disclosure, wherein the vehicle body is shown in dotted outline, and the desilter device and sprinkler system are shown in solid line outline.

Fig. 2 and Fig. 3 are structural schematic diagrams of the desilting device and spraying system shown in Fig. 1 .

Fig. 4 and Fig. 5 are structural schematic diagrams of the desilting device shown in Fig. 2 and Fig. 3 , wherein the desilting device is shown as a solid line outline, and the spraying system is shown as a dotted line outline.

Fig. 6 is an assembly schematic diagram of the first desilting part of the desilting device shown in Fig. 4 and Fig. 5 .

Fig. 7 is a schematic bottom view of the first desilting part shown in Fig. 6 .

Fig. 8 is a front structural schematic view of the first desilting part shown in Fig. 6 .

Fig. 9 is a right view structural diagram of the first desilting part shown in Fig. 6 .

Fig. 10 is an assembly schematic diagram of the second desilting part of the desilting device shown in Fig. 4 and Fig. 5 .

Fig. 11 is a schematic bottom view of the second desilting part shown in Fig. 10 .

Fig. 12 is a rear structural schematic view of the second desilting part shown in Fig. 10 .

Fig. 13 is a right view structural diagram of the second desiltering part shown in Fig. 10 .

Fig. 14 is a schematic diagram of the assembly of the third desilting part of the desilting device shown in Fig. 4 and Fig. 5 .

Fig. 15 is a schematic bottom view of the third desilting section shown in Fig. 14 .

Fig. 16 is a front structural schematic diagram of the third desilting part shown in Fig. 14 .

Fig. 17 is a right view structural diagram of the third desilting part shown in Fig. 14 .

Fig. 18 is a schematic diagram of the assembly of the fourth desilting part of the desilting device shown in Fig. 4 and Fig. 5 .

Fig. 19 is a schematic bottom view of the fourth desilting part shown in Fig. 18 .

Fig. 20 is a front structural schematic diagram of the fourth desilting part shown in Fig. 18 .

Fig. 21 is a right view structural diagram of the fourth desiltering part shown in Fig. 18 .

Fig. 22 and Fig. 23 are schematic structural diagrams of the sprinkler system shown in Fig. 2 and Fig. 3, in which, the partially enlarged structures of the sprinkler system at I, II, III, IV, V, VI, VII, and VIII are shown .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way intended as any limitation of the disclosure, its application or uses. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

Relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, these techniques, methods, and devices should be considered part of the authorized specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present disclosure, it should be understood that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. meaning, and therefore cannot be construed as limiting the scope of protection of the present disclosure.

In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by orientation words such as "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. is generally based on the orientation or position shown in the drawings The relationship is only for the convenience of describing the present disclosure and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the protection scope of the present disclosure; the orientation words "inner and outer" refer to the inner and outer relative to the outline of each component itself.

As shown in FIGS. 1 to 23 , some embodiments of the present disclosure provide a harvester, including a vehicle body and a sprinkler system 3 . The vehicle body includes a vehicle frame 11 and a plurality of tires 10 disposed under the vehicle frame 11 . The sprinkler system 3 includes a plurality of sprinkler devices 32 installed on the vehicle frame 11 and corresponding to the plurality of tires 10 . The spraying direction of the spraying device 32 is adjustable. The spraying device 32 has a first working mode and a second working mode. In the first working mode, the spraying device 32 is configured to spray water on the corresponding tire 10 to clean up the adhesion. For the mud on the tires 10, in the second working mode, the sprinkler system 3 is configured to spray around the vehicle body to suppress the dust generated during the operation of the harvester.

In the harvester provided by the embodiments of the present disclosure, the spraying direction of the spraying device is adjustable, and the spraying system has a first working mode that can spray water on tires and a second working mode that can spray water around the vehicle body.

When the harvester is working in wet fields or even muddy fields, adjust the spraying direction of the spraying device so that it is aimed at the tires to spray water, and the less viscous soil attached to the tires can fall off automatically under the infiltration of water flow It needs to be shut down for manual removal, which is beneficial to reduce the power output and energy consumption of the harvester engine and improve the working efficiency of the harvester.

When the harvester is working in a dry field, adjust the spraying direction of the spraying device to spray water mist around the car body, and increase the water supply pressure of the spraying system. Under high pressure, the formed water curtain wraps The harvester can prevent flying dust from flying and have a good dust suppression effect, which is beneficial to reduce the pollution to the environment and the atmosphere, and to reduce the damage to the health of the workers.

In order to further improve the effect of cleaning up the soil, as shown in FIGS. A plurality of mud removal parts are provided, and the mud removal parts are configured to clean up the mud attached to the tire 10 .

As shown in FIGS. 5 to 21 , in some embodiments, the mud removing part includes a scraper configured to scrape off mud attached to the tire 10 , the scraper has a mud scraping end disposed toward the tire 10 , and the scraper is configured to scrape off mud attached to the tire 10 . The distance between the mud end and the tire 10 along the extending direction of the scraper is adjustable, so as to remove mud with different viscosities.

When the harvester is working in a wet field or even muddy ground, the less viscous soil attached to the tires can fall off by itself under the infiltration of water, while the more viscous soil can be removed by the scraper.

As shown in Figures 6 to 21, in some embodiments, in order to realize the adjustable distance between the mud scraping end and the tire 10 along the extending direction of the scraper, the mud removal part also includes a scraper bracket connected to the vehicle frame 11 and a connection pieces. There is a first installation hole on the scraper, and a second installation hole corresponding to the first installation hole on the scraper bracket, and the connector passes through the first installation hole and the second installation hole to install the scraper on the scraper bracket superior. At least one of the first mounting hole and the second mounting hole has a size larger than that of the connecting piece in at least one direction, forming a movable gap for adjusting the distance between the mud scraping end and the tire 10 along the extending direction of the scraper.

In some other embodiments, in order to realize the adjustable distance between the mud scraping end and the tire 10 along the extending direction of the scraper, the included angle of the scraper relative to the horizontal plane is adjustable. For example, the scraper can be swingably arranged around a horizontal axis relative to the vehicle frame 11 .

As shown in Fig. 22 and Fig. 23, in some embodiments, the sprinkler system 3 further includes a water tank 30, a water supply pipeline, a pumping device 38 and a pressure regulating device. The water tank 30 is installed on the vehicle frame 11 . The water supply pipeline is installed on the vehicle frame 11 and connected between the water tank 30 and the shower device 32 . The pumping device 38 is installed on the water supply pipeline and configured to supply water from the water tank 30 to the shower device 32 . The pressure regulating device is installed on the water supply pipeline and is configured to adjust the pressure of the water supply pipeline to adjust the water outlet pressure of the spraying device 32 .

In the above embodiment, when the viscosity of the soil attached to the tire is high, or when it is necessary to prevent flying dust, the spraying can be adjusted through the pressure regulating device according to the viscosity of the soil, the severity of the flying dust and the working mode of the spraying system. The water pressure of the system is used to achieve better mud removal or dust suppression effects.

Compared with the harvester that uses the principle of negative pressure dust removal to suppress dust, the harvester of the above embodiment has a simpler structure, is convenient for maintenance, and consumes less power, and does not need to manually clean the dust collection device. The cost of manufacturing, maintenance, and maintenance Inexpensive, conducive to popularization and use.

In some embodiments, the sprinkler system 3 further includes a pressure detection device disposed on the water supply pipeline, and the pressure detection device is configured to detect the pressure of the water supply pipeline and provide display information of the pressure of the water supply pipeline.

In some embodiments, the sprinkler system 3 further includes a filtering device arranged on the water supply pipeline to filter impurities in the water.

In the above embodiments, the pressure regulating function of the pressure regulating device and the filtering function of the filtering device can be realized simultaneously by setting a filter pressure regulating valve on the water supply pipeline.

In some embodiments, the shower device 32 includes a shower head, the shower head includes a shower head body, an atomizing part for atomizing the water flow, and a working mode switching part, the shower head body has a first spray channel and a second spray channel, and the mist The chemical part is arranged on the second spray channel, and the position of the working mode switching part is adjustable on the shower head body and is configured to selectively connect or disconnect the first spray channel and the second spray channel. The spray device 32 is configured as follows: in the first working mode, the first spray channel is connected and the second spray channel is disconnected, and the nozzle sprays water; in the second working mode, the second spray channel is connected and the first spray channel is disconnected , Nozzle Spray.

The spray head in the above embodiment can be an adjustable spray head, and the working mode switching part can include a rotating cover rotatably arranged at one end of the spray head body, and the working mode of the spraying device 32 can be switched by changing the rotation angle of the rotating cover.

In some other embodiments, the spraying device 32 may also include a plurality of spraying heads for spraying water and spraying water respectively. The spray device 32 includes a first spray head and a second spray head that can be selectively connected or disconnected. The first spray head does not include an atomizing part for atomizing the water flow, and the second spray head includes a mist sprayer for atomizing the water flow. In the third part, the spraying device 32 is configured as follows: in the first working mode, the first spraying head is opened and the second spraying head is closed, and the first spraying head sprays water; in the first working mode, the second spraying head is opened and the first spraying head is closed; Two spray nozzles.

The harvesters of some embodiments of the present disclosure will be further described below in conjunction with the accompanying drawings. For the components not specifically described, the functions of the components, and the positional relationship among the components, etc., reference may be made to the relevant description above.

As shown in FIGS. 1 to 3 , the harvester includes a car body, a mud removal device 2 and a sprinkler system 3 , and the car body includes a vehicle frame 11 and a plurality of tires 10 .

As shown in Fig. 4 and Fig. 5, the mud removal device 2 includes a plurality of mud removal parts installed on the vehicle frame 11 and corresponding to a plurality of tires 10, the plurality of mud removal parts include a first mud removal part 21A, a second mud removal part Desilter section 21B, third desilter section 22A, and fourth desilter section 22B. As shown in FIGS. 6 to 9 , the first desilting part 21A includes a first scraper bracket 211A connected to the vehicle frame 11 , a first scraper 212A and a first pressure plate 213A. As shown in FIGS. 10 to 13 , the second desilting unit 21B includes a second scraper bracket 211B connected to the vehicle frame 11 , a second scraper 212B and a second pressure plate 213B. As shown in FIGS. 14 to 17 , the third desilting unit 22A includes a third scraper bracket 221A connected to the vehicle frame 11 , a third scraper 222A and a third pressure plate 223A. As shown in Figures 18 to 21, the fourth desilting part 22B includes a fourth scraper bracket 221B connected to the vehicle frame 11, a fourth scraper 222B and a fourth pressing plate 223B, and each component of each of the above desilting parts is It is connected as a whole by bolts and nuts.

The first installation hole H1 of the first scraper 212A, the first installation hole H2 of the second scraper 212B, the first installation hole H3 of the third scraper 222A, and the first installation hole H4 of the fourth scraper 222B are all long. The strip-shaped hole forms a movable gap for adjusting the distance between the scraper end and the tire 10 along the extending direction of the scraper.

The above scrapers installed on each scraper bracket can be made of polyurethane material, its hardness is Shore hardness 85A, the tensile strength is not less than 35MPa, and the tear resistance is not less than 75Kn/m, so that the scraper has a better scraping effect. Mud effect and long service life.

As shown in FIG. 22 and FIG. 23 , the spraying system 3 includes a water tank 30 , a water supply pipeline, a spraying device 32 , a water pipe support, a control valve, a pumping device 38 and a water pump support 39 .

Water tank 30 is installed in the bottom of vehicle frame 11 rear, and for preventing collision damage, water tank 30 adopts steel plate manufacturing.

The water supply pipeline includes a first water pipe 311, a second water pipe 312, a third water pipe 313, a fourth water pipe 314, a fifth water pipe 315, a sixth water pipe 316, a seventh water pipe 317, an eighth water pipe 318, a water pipe joint 34 and a pipe plug 36.

The control valve includes a shut-off valve 371 and a filter pressure regulating valve 372 . The filter pressure regulating valve 372 is used for adjusting the pressure of the water supply pipeline and filtering impurities in the water. The pumping device 38 can be a booster pump, and is installed on the vehicle frame 11 through a water pump bracket 39 . Whether the sprinkler system 3 performs the spraying operation can be controlled by the control button located in the cab of the harvester. When the control button is turned on, the booster pump starts, and the spraying device 32 starts the spraying operation. When the control button is turned off, the booster pump starts. The pump is closed, and the spraying device 32 stops the spraying operation.

The water pipe joint includes a first three-way joint 331, a second three-way joint 332, a third three-way joint 333 and a right-angle joint 34. The first three-way joint 331 is connected with the first water pipe 311 and the second three-way joint 332 respectively. connection, the first three-way joint 331 is connected respectively, and the right-angle joint 34 is connected with the first water pipe 311 and the second water pipe 312 respectively.

Water tank 30, fifth water pipe 315, stop valve 371, sixth water pipe 316, filter pressure regulating valve 372, seventh water pipe 317, eighth water pipe 318, pumping device 38, ninth water pipe 319, first three-way joint 331 in order Connection, after passing through the first three-way joint 331, it is divided into two pipelines arranged symmetrically to the vehicle frame 11, and is fixed on the vehicle frame 11 through the first water pipe support 351 and the first water pipe support 352. Each pipeline is connected in turn by the first water pipe 311, the second water pipe 312, and the second three-way joint 332, and the third water pipe 313 and the fourth water pipe 314 drawn from the second three-way joint 332 are respectively connected to the front side of the vehicle frame 11 and Two showers 32 on the rear side. The ends of the two pipelines are blocked with a pipe plug 36.

The above-mentioned water pipe joints, pumping devices, control valves, spraying devices and water pipes can be connected by ferrule joints to facilitate the installation of water pipes. Except for the fifth water pipe 315 which is made of seamless steel pipes, one end of the water pipes of the sprinkler system 3 is welded to the lower part of the water tank 30, and the other end is threaded for installing the stop valve 371. The rest of the water pipes are all made of PPR (Polypropylene-Random, random Copolymer polypropylene) water pipes.

The shower device 32 includes a shower head, and the shower head includes a shower head body, an atomizing part and an operating mode switching part for atomizing the water flow, the shower head body has a first spray channel and a second spray channel, and the atomizer is arranged on the second spray channel. On the spraying channel, the position of the working mode switching part is adjustable on the shower head body and is configured to selectively connect or disconnect the first spraying channel and the second spraying channel.

When the harvester is working in a wet field, adjust the position of the working mode switching part on the sprinkler head so that the spraying device 32 is in the first working mode, the first spraying channel is in a connected state, and adjust the spraying direction and spraying direction of the spraying device. The water supply pressure of the shower system sprays water on the corresponding tire 10 to clean up the less viscous mud attached to the tire 10 through the water outlet, and simultaneously scrapes off the more viscous mud attached to the tire 10 by the scraper.

When the harvester is working in a dry field, adjust the position of the working mode switching part on the sprinkler head so that the spraying device 32 is in the second working mode, the second spraying channel is in a connected state, and adjust the spraying direction and spraying direction of the spraying device. The water supply pressure of the system is sprayed around the car body through the water outlet to suppress the dust generated during the operation of the harvester.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present disclosure can still be Modifications to the disclosed specific implementation methods or equivalent replacement of some technical features shall be covered by the scope of the technical solution claimed in the present disclosure.

Claims (8)

1. A harvester, comprising:

a vehicle body including a frame (11) and a plurality of tires (10) disposed below the frame (11); and

a spraying system (3) comprising a plurality of spraying devices (32) which are arranged on the frame (11) and correspond to the plurality of tires (10), wherein the spraying directions of the spraying devices (32) are adjustable, the spraying devices (32) have a first working mode and a second working mode, in the first working mode, the spraying devices (32) are configured to spray water to the corresponding tires (10) to clean soil attached to the tires (10), and in the second working mode, the spraying devices (32) are configured to spray water to the periphery of the vehicle body to inhibit dust generated during the operation of the harvester;

wherein the spray device (32) comprises a spray head, the spray head comprises a spray head body, an atomization part for atomizing water flow and a working mode switching part, the spray head body is provided with a first spray channel and a second spray channel, the atomization part is arranged on the second spray channel, the working mode switching part is adjustably arranged on the spray head body in position and is configured to selectively switch on or off the first spray channel and the second spray channel, the spray device (32) is configured to: in the first operating mode, the first spray channel is connected and the second spray channel is disconnected, the spray head sprays water, in the second operating mode, the second spray channel is connected and the first spray channel is disconnected, the spray head sprays water, or the spray device (32) comprises a first spray head and a second spray head which are selectively connected or disconnected, the first spray head does not comprise an atomization part used for atomizing water flow, the second spray head comprises an atomization part used for atomizing water flow, and the spray device (32) is configured to: in the first working mode, the first spray head is opened and the second spray head is closed, the first spray head sprays water, and in the second working mode, the second spray head is opened and the first spray head is closed, and the second spray head sprays water.

2. A harvester according to claim 1, characterised in that it further comprises a mud removal device (2), said mud removal device (2) comprising a plurality of mud removal portions mounted on said frame (11) and arranged in correspondence of said plurality of tyres (10), said mud removal portions being configured to clean the mud adhering to said tyres (10).

3. A harvester according to claim 2, characterised in that the mud removing part comprises a scraper configured to scrape off earth adhering to the tyre (10), the scraper having a scraper end disposed towards the tyre (10), the distance of the scraper end from the tyre (10) in the extension direction of the scraper being adjustable.

4. A harvester according to claim 3, in which the mud removal part further comprises: with scraper blade support and connecting piece that frame (11) is connected, first mounting hole has on the scraper blade, have on the scraper blade support with the second mounting hole that first mounting hole corresponds the setting, the connecting piece pass first mounting hole with the second mounting hole, in order to with the scraper blade install in on the scraper blade support, first mounting hole with at least one in the second mounting hole is greater than in at least one ascending size of direction of connecting piece, forms and is used for adjusting scrape mud end with tire (10) are followed the movable gap of the extending direction's of scraper blade distance.

5. A harvester according to claim 3, in which the angle of the screed relative to the horizontal is adjustable.

6. A harvester according to claim 1, characterised in that the spraying system (3) further comprises:

a water tank (30) mounted on the frame (11);

a water supply pipeline which is arranged on the vehicle frame (11) and is connected between the water tank (30) and the spraying device (32);

a pumping device (38) mounted on the water supply line configured to supply water from the water tank (30) to the spray device (32); and

and the pressure regulating device is arranged on the water supply pipeline and is configured to regulate the pressure of the water supply pipeline so as to regulate the water outlet pressure of the spraying device (32).

7. A harvester according to claim 6, characterised in that the spray system (3) further comprises a pressure detection device arranged on the water supply line, the pressure detection device being configured to detect the pressure of the water supply line and to provide a display of the pressure of the water supply line.

8. A harvester according to claim 6, characterised in that the spraying system (3) also comprises filtering means arranged on the water supply line to filter impurities in the water.

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