JP2006166751A - Hydraulic system in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that since a hydraulic system of a conventional type combine harvester has an oil tank at the front part or the central part of an undercarriage, the position of the center of gravity of the undercarriage inevitably approaches the front, the combine harvester is inclined to balance in the front, largely shaken in the longitudinal direction of the undercarriage with traveling, becomes unstable, lifts and lowers a reaping blade and performs high reaping or low reaping, reaping marks are not fixed and a head loss increases. <P>SOLUTION: The hydraulic system of a combine harvester is equipped with a plurality of lines of reaping pretreatment apparatuses 5 each composed of a stems and culm conveying apparatus 3 and a rotary reaping blade 4 ahead a threshing apparatus 2 mounted on the undercarriage. The reaping pretreatment apparatus 5 is equipped with a hydraulic motor 6 for transmitting the rotary reaping blade 4 , the oil tank 8 constituting a series of hydraulic systems 7 connected to the hydraulic motor 6 is arranged at the upper part at the rear position of a threshing apparatus 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hydraulic device in a combine for supplying hydraulic oil to a hydraulic motor that drives a rotary cutting blade for circulation.

  Conventionally, this type of general-purpose combiner is a row crop header that cuts the stock in the middle while transporting it backwards by holding stalks of relatively low length from both left and right sides with lag belts and transporting them to the rear auger In this configuration, the stalk is further supplied from the scraping auger to the full-throw-in type threshing device via the transfer conveyor device. Such a general-purpose combiner uses a disc cutting blade as a cutting device, and each of the disc cutting blades pivoted for each cutting strip is driven by a hydraulic motor.

For example, the above technique is described and disclosed in Japanese Patent Application Laid-Open No. 11-75495 (see Patent Document 1). That is, the technical configuration described in the published patent publication is a cutting device that rotates a cutting blade with a hydraulic motor to cut the pedicle, guides the pedicle in the field at the transport start end, and removes the pedicle after cutting. For a hydraulic motor having a switching valve that opens and closes an oil passage to the hydraulic motor by constructing a pre-cutting processing unit by arranging a plurality of cutting units provided with a conveying device that conveys and supplies the rear auger in a horizontal direction. The hydraulic circuit is connected to the return oil path of the hydraulic circuit that operates the hydraulic cylinder and other actuators that move up and down the cutting pre-processing section on the aircraft side, and the hydraulic motor is driven by hydraulic oil from the hydraulic circuit on the aircraft side It is configured.
JP-A-11-75495

  The above-described conventionally known combine hydraulic device has an oil tank mounted on the front or center of the chassis, so that the position of the center of gravity of the combine chassis is closer to the front, and there is a tendency for front balance. It was. Therefore, in the case of a conventional combine, in the case of the front balance, the conventional combine becomes more unstable in the longitudinal direction of the chassis as it travels, becomes unstable, the cutting blade moves up and down, repeats high cutting and low cutting, and the cut remains constant However, there was a problem that the head loss increased.

  In order to solve the above-mentioned problems, the invention described in claim 1 is characterized in that at least a pedicle conveyance device (3) and a rotary cutting cutter are provided in front of a threshing device (2) mounted on a chassis (1). A plurality of pre-cutting processing devices (5) configured with blades (4) are provided in a row, and the pre-cutting processing device (5) is provided with a hydraulic motor (6) that transmits the rotary cutting blade (4). ) And the oil tank (8) constituting the series of hydraulic devices (7) connected to the hydraulic motor (6) is configured as an upper device at a rear position of the threshing device (2). Is a hydraulic device for a combine characterized in that the weight balance of the combine is moved to the rear of the chassis to correct the conventional biased front balance. Further, the present invention has the advantage that the dust tank is less likely to fall and the accumulation of dust is reduced by installing the oil tank at a high position at the rear.

  Next, the invention described in claim 2 is characterized in that the oil tank (8) is configured as a device above the dust cover (9) provided at the rear part of the threshing device (2). The hydraulic device in the combine according to claim 1, wherein the dust cover usually attached to the rear part of the threshing device has a rear slope to discharge the dust to the field scene below the rear part of the chassis. It has a configuration. Therefore, the oil tank may flow out of the oil tank during maintenance such as oil replenishment, but even in such a case, the oil tank can be drained to the ground by passing over the inclined dust cover, There is an advantage that it does not collect around or on the chassis.

  Next, the invention described in claim 3 is that the oil tank (8) is configured on the leeward side of the fan (11) provided in the input pulley (10) of the threshing device (2). 2. The hydraulic device for a combine according to claim 1, wherein a rise in oil temperature is always a problem during operation, and a large-capacity hydraulic device may be used to solve this problem. Are known.

  In the present invention, a fan is provided in an input pulley that is driven only during work, and an oil tank is disposed on the leeward side of the fan to prevent an increase in oil temperature during operation, so that dust does not collect around the tank. In this way, the wind is blown.

  In the present invention, the fan rotates integrally with the input pulley only during the operation of transmitting the threshing and winds and cools, and if the operation is interrupted and the threshing device is stopped, the fan also stops. There is also an advantage that useless power is not lost during movement to an adjacent field.

  First of all, the invention described in claim 1 is a modification of the unbalanced weight balance of the combine, which has been prone to the front balance and has various problems, by mounting the oil tank at the rear part of the chassis. It has excellent features that extremely reduce the back-and-forth swing during work, and keep the cutting height constant to eliminate the head loss caused by the swing.

The present invention is characterized in that the oil tank is installed at a high position in the rear part, so that dust and the like are less likely to fall and the accumulation of dust is reduced.
The invention described in claim 2 has the effect of the invention of claim 1 but is configured to be provided with a rear slope in order to discharge the dust to the field scene below the rear of the chassis. Providing an oil tank on the upper side of the dust cover has the effect of eliminating the oil reservoir.

  That is, the oil tank may flow out of the oil tank during maintenance such as oil replenishment, but even in such a case, the oil tank can be drained to the ground by touching the top surface of the inclined dust cover as described above. There is an effect that an adverse effect such as oil accumulation on the chassis can be solved beforehand.

  The invention described in claim 3 has the effect of claim 1, but this type of hydraulic device is always subject to an increase in oil temperature during operation. It is known to use capacity tanks.

  However, the present invention provides a fan in the input pulley that is driven only during work, and disposes an oil tank on the leeward side of the fan to blow and cool the air during work to prevent the oil temperature from rising. There is a feature that prevents dust from accumulating around the tank.

  Furthermore, the present invention is configured such that the fan rotates and winds and cools only during the threshing operation, so that the rotation of the fan is stopped during the traveling movement while the operation is stopped when the threshing device is stopped, and wasteful power loss occurs. There are no features.

  First, according to the embodiment of the present invention, a threshing device 2 mounted on a chassis 1 and a plurality of pre-cutting processing devices 5 including a stalk conveying device 3 and a rotary cutting blade 4 are arranged in front of the threshing device 2. An oil tank 8 constituting a series of hydraulic devices 7 which are combined and connected to a hydraulic motor 6 that transmits the rotary cutting blade 4 of the pre-cutting device 5 is installed at the upper position at the rear position of the threshing device 2. It is configured.

  Conventionally, this type of combiner is known to have a structure in which the oil tank 8 of the hydraulic device 7 is mounted on the lower side of the cabin or the Glen tank, and the weight balance of the vehicle body tends to be biased toward the front. Therefore, the conventional combine makes the body swing back and forth during work, and the cutting blades move up and down accordingly, repeatedly cutting high and low, and disturbing the cuts. was there.

In the present invention, the oil tank 8 is mounted on the upper side at the rear portion of the threshing device 2 as described above, thereby improving the weight balance of the combine vehicle body and eliminating the conventional problems.
Embodiments of the present invention will be specifically described below with reference to the drawings.

  First, as shown in FIG. 1 and FIG. 2, the threshing device 2 includes an all-throw-in type handling chamber and a sorting chamber, and the stalk supply port 16 is positioned on the front side of the chassis 1 having the crawler 15. The dust outlet 17 is mounted on the rear side along the traveling direction. As shown in the drawing, the threshing device 2 allows the front end of the shoot supply port 16 to freely rotate the conveyance end portion of the feeder house 18 (referred to as “conveyance conveyor device 18” in the description of the embodiment). It is connected in a pivotal manner, and a dust exhaust cover 9 is connected from the upper side to the dust outlet 17 on the rear side to guide the dust to the ground side of the field.

  Next, as shown in FIG. 1 and FIG. 2, the pre-cutting processing device 5 conveys a pedicle stick comprising a pair of left and right weed ridges 20 and 20 from the front and a pair of left and right lug belts 21 and 21 at the rear. The apparatus 3 and the rotary cutting blade 4 pivotally mounted on the vertical axis below the stalk transporting apparatus 3 are integrally formed as a single frame, and in the case of the example, this is arranged in four rows in the lateral direction. It is configured.

  As shown in FIGS. 2 and 3, the lug belts 21 and 21 are provided such that the floating pulley 22 at the conveyance start end is low and the drive pulley 23 at the end is high and inclined in a side view. When the stock is cut by the rotary cutting blade 4 at a midway position while engaging and transporting the hooks with the lugs from both the left and right sides, the hooks are engaged and held as they are and are transported to the rear auger 24. In this case, as will be understood from the drawings, the lug belts 21 and 21 are provided in two upper and lower stages and are held up and down so that the stems do not fall off.

And the rotary blade 4 is set as the structure transmitted by the transmission chain 25 from the hydraulic motor 6, as shown to drawing.
Next, as shown in FIG. 1, the take-up auger 24 is formed in a width corresponding to the number of the four cutting strips, and the collecting spiral 26 that transports the outer surface from the left and right ends to the inside, and the transport conveyor. A scraping crank finger 27 is provided in correspondence with the start end inlet of the apparatus 18 so that the cutting stems can be collected and supplied to the transfer start end of the transfer conveyor apparatus 18.

  In the embodiment shown in FIGS. 3 and 4, the pre-cutting processing device 5 is provided with a pillow handle lever 28 on the side frame around which the take-up auger 24 is pivoted, and this lever 28 is placed on the entry side (on the drawing). When the front side is operated to the pillow handling position), the rear agitation auger 24 and the transport conveyor device 18 are raised to the threshing device 2 side as a pivotal fulcrum while the front weed 20 is grounded, As shown in FIG. 4, the charging space 30 is widened and opened in front of the take-up auger 24 by bending the transmission shaft 29 that transmits the drive pulley 23 as a fulcrum.

  Therefore, when the operator inputs the stems cut from the headland in the field prior to the combine operation from the input space 30, the operator transfers the stems from the driving auger 24 to the transport conveyor device 18 and threshing. It is conveyed to the apparatus 2 and supplied, and a pillow handling operation can be performed.

  And the cutting pretreatment apparatus 5 of an Example connects the air nozzle 32 to the front-end | tip part of the hose 31 connected with the compressor outside the figure mounted, as shown in FIG. It is provided so as to face the lower part, and it is configured to blow away and remove soil and mud adhering by spraying on the stems and stems in the middle of conveyance to prevent generation of dirt in the case of soybeans and the like.

  As shown in FIG. 6, the air nozzle 32 may be configured to be installed on the upper side of the platform and sprayed below the stirrer auger 24 to blow away dirt and the like. it can. Furthermore, if the air nozzle 32 is configured so as to be blown to the hydraulic motor 6 as cooling air, there is an advantage that the cooling action works to lower the temperature of the motor and increase the efficiency. Reference numeral 33 denotes a cut-out plate.

Next, a hydraulic device (hydraulic circuit) 7 for driving the hydraulic motor 6 will be described.
First, as shown in FIG. 7, the hydraulic device 7 includes four hydraulic motors 6 connected to the four rotary cutting blades 4 so as to be capable of transmission, and the left two (left two) in series. The right two (right two) are also connected in series to form series circuits 7a and 7b on the left and right sides, respectively. As shown in FIG. 7, the two left and right series circuits 7a and 7b can supply the oil amount to the branch portion close to the hydraulic pump 35 while equally distributing the left and right at a one-to-one ratio. A shunt valve 36 is provided and connected to a parallel circuit. The four hydraulic motors 6 are configured to be driven by an equal amount of hydraulic oil that is pumped and circulated to the two left and right series circuits 7a and 7b.

  As shown in FIG. 7, the hydraulic device 7 (hydraulic circuit) forms a series of hydraulic circuits 7 by connecting an oil tank 8 and an oil filter 37 in the circuit. The pressure relief mechanism for the circulation circuit and the drive circuit will be described later.

  In the hydraulic device 7 configured as described above, the oil tank 8 is provided by being placed on the tank support 40 provided on the rear upper side of the threshing device 2 as shown in FIGS. 1 and 2. It is said. In this embodiment, as shown in FIG. 1, the oil tank 8 is provided with an oil filter 37 connected nearby, and further, these are arranged on the upper side of the dust cover 9 as shown in FIG. It is the composition located in.

  Therefore, since the combine places the oil tank 8 on the rear upper tank support base 40 as described above, the center of gravity of the vehicle body can move rearward to ensure a stable balance, and the front and rear shakes during work. The number of cuts was reduced, and the cuts were kept in order while keeping the cutting height almost constant. Therefore, the combine can greatly reduce head loss and can be harvested with high accuracy.

  In addition, since the tank 8 is located at a relatively high position, the embodiment has an advantage that dust does not fall and dust does not accumulate. When the oil tank 8 is installed on the upper side of the dust cover 9 and maintenance such as oil replenishment or replacement is performed, if the oil leaks to the outside and flows down to the upper surface of the dust cover 9, the oil tank 8 is grounded due to the inclination of the cover. There is a feature that does not flow down and accumulate on the chassis.

  Next, as shown in FIG. 8, the oil tank 8 and the oil filter 37 are configured such that the fan 11 is integrally attached to the input pulley 10 of the threshing device 2 and is located on the leeward side of the fan 11.

  With this configuration, the oil tank 8 and the oil filter 37 have always been subject to an increase in oil temperature. In this embodiment, however, the oil tank 8 and the oil filter 37 are on the leeward side of the fan 11 so It is cooled by spraying to prevent the oil temperature from rising, and it has the feature that dust does not collect around the tank. In this embodiment, the fan 11 rotates and winds and cools only during the threshing operation, but the rotation of the fan 11 also stops during the operation interruption when the threshing device 2 is stopped, and there is no useless power loss. There are also features.

  Next, as shown in FIGS. 9 and 10, the oil tank 8 and the oil filter 37 are arranged on the side of the threshing device 2 (position corresponding to the height of the oil tank 8) and the upper position. The wind guide plates 41 and 42 for guiding the wind are provided.

  And this wind guide plate 41 is comprised so that the wind which flows with driving | running | working may be guided and sprayed to the oil tank 8 side, on the other hand, the upper wind guide plate 42 of the threshing apparatus 2 with driving | running | working. The wind flowing backward along the upper surface is configured to guide the oil tank 8 and the oil filter 37.

  When configured as described above, the oil tank 8, the oil filter 37, and the connection hose 45 are guided by the wind guide plates 41 and 42 and blown so as to flow backward as the combine moves forward. In addition, the cooling function and the dust-proofing function are performed to prevent the oil temperature from rising, and the dust is not blown away and collected.

  Next, as shown in FIGS. 11 and 12, the oil tank 8 and the oil filter 37 have one end positioned above the stalk supply port 16 of the threshing device 2 and the other end set to the threshing device 2. It is set as the structure which covered the upper part and the side with the handling cylinder cover 43 of the threshing apparatus 2 extended to the back position further from the rear part.

  The conventional oil tank 8 is configured to be covered with a tank cover different from the handling cylinder cover 43, but in the case of the embodiment, as described above, the handling cylinder cover 43 is extended to the rear and covered. If the handling cylinder cover 43 is opened, the oil tank is also opened at the same time, and maintenance such as oil replenishment can be performed together with maintenance of the handling chamber. In addition, the integrated handling cylinder cover 43 has an excellent appearance design and can be manufactured at a low cost.

Next, the arrangement of the connection hose 45 for communicating the oil tank 8 and the hydraulic motor 6 and circulating oil between them will be described.
First, as shown in FIGS. 13 and 14, the connection hose 45 communicates between the oil tank 8 mounted on the rear part of the threshing device 2 and the hydraulic motor 6 installed in the pre-cutting processing device 5. In the middle, a hydraulic pump 35, an oil filter 37, a control valve 46, and the like are interposed to form a series of circulation circuits. And as shown in the drawing, the connecting hose 45 is provided through the left outer side of the chassis, avoiding the portion where the engine and exhaust pipe in the central part of the combine machine (threshing device 2) are arranged and collecting heat. (Wind) directly hits the hose surface.

  With this configuration, the embodiment can perform various operations from the outside of the vehicle body. Therefore, the embodiment has an excellent feature that facilitates assembly operations and subsequent maintenance in the manufacturing process. There is also an advantage that an increase in temperature can be prevented.

  In this case, as shown in FIGS. 13 and 14, the control valve 46 is attached to the left end of the front frame 47 of the transport conveyor device 18. There is a feature that the operator can easily approach, maintenance can be facilitated, and attachment work with the connection hose 45 is easy.

  Although the control valve 46 is not shown in the drawing, when the control valve 46 is attached to the machine frame side of the scraping auger 24 in front of the front frame 47 of the transport conveyor device 18, the cutting pretreatment device 5 is separated from the chassis 1. Sometimes (the front is separated from the front frame 47 of the conveyor device 18), the connecting hose can be easily removed. In particular, in the case of the embodiment, the control valve 46 has fewer connecting hoses 45 on the rear side (oil tank 8 side) than on the front side (hydraulic motor 6 side), and can be easily attached and detached.

  And in the case of the Example shown in FIG.15 and FIG.16, the connection hose 45 comprises the straight part which has arrange | positioned the side part of the threshing apparatus 2 in the front-back direction using the metal pipe 48. FIG. As described above, when the metal pipe 48 is used for the straight portion, the connection hose 45 has an advantage that it is less likely to be damaged and lasts longer than a resin or rubber hose, and the heat conduction is due to the nature of the metal. Cooling of oil that flows quickly inside is also effective. The metal pipe 48 has features such as easy assembly and low cost.

  Next, as shown in FIG. 17, when the connection hose 45 is provided through the left side of the threshing device 2, the connection hose 45 is routed through the outside of the intake port 50 a of the compressed wind tang 50 and the intake port 51 a of the second tang 51. It is said. If comprised in this way, the connection hose 45 will receive the cold wind attracted | sucked from the outside directly in the inlet ports 50a and 51a of the two tangs 50 and 51, and it can be cooled, and can prevent the raise of oil temperature beforehand. There is.

Next, the pressure relief mechanism of the hydraulic circuit 7 will be described.
First, as shown in FIG. 18, the pressure release circuit 55 of the embodiment has a circulation circuit 57 (series circuit 7a shown in FIG. 7) that communicates with two hydraulic motors 6 and 6 (see FIG. 7) connected in series. , 7b), and a pressure relief valve 56 is provided in the pressure relief circuit 55. The pressure relief valve 56 starts the hydraulic pump 35 and starts pumping hydraulic oil from the drive circuit 58 to the hydraulic motor 6 and further to the next hydraulic motor 6 side through the circulation circuit 57. The structure is closed by the pilot pressure.

  Accordingly, in the two hydraulic motors 6 and 6, the hydraulic oil drives the first hydraulic motor 6 from the drive circuit 58 with the pressure release circuit 55 closed, and then the second hydraulic motor 6 from the circulation circuit 57. It is circulated and driven to transmit the two rotary cutting blades 4. Thus, the hydraulic motors 6 and 6 perform the cutting operation by transmitting the rotary cutting blade 4 while being driven. The pressure release valve 56 automatically opens due to the tension of the spring when the hydraulic pump 35 is stopped and the hydraulic oil is not pumped to the drive circuit 58 when the cutting operation is interrupted or the emergency stop is performed. The depressurization circuit 55 is in communication with the oil tank 8, and the hydraulic oil in the circulation circuit 57 between the two hydraulic motors 6 and 6 circulates to the tank 8 side to complete the depressurization operation.

  Since the conventional hydraulic circuit 7 has no pressure relief mechanism in the circulation circuit 57 that supplies hydraulic oil to the hydraulic motors 6 and 6, when the rotary cutting blade 4 stops due to external resistance during the cutting operation, the hydraulic pump Even if 35 is stopped, the hydraulic oil (hydraulic pressure) in the circulation circuit 57 between the hydraulic motors 6 and 6 is not released, the pressure is accumulated, and the rotary cutting blade 4 cannot be reversely rotated from the external resistance. It was a highly risky configuration that could not be avoided.

  On the other hand, in the above-described embodiment, since the pressure release circuit 55 having the pressure release valve 56 is connected to the circulation circuit 57 between the two hydraulic motors 6 and 6, when the hydraulic pump 35 is stopped during driving, In other words, the pressure relief valve 56 is actuated, and the hydraulic oil in the opening circulation circuit 57 is circulated from the pressure relief circuit 55 to the oil tank 8 via the pressure relief valve 56 and the hydraulic pressure in the circuit is eliminated. Therefore, the rotary cutting blade 4 is connected to the hydraulic motor 6 through the transmission chain 25. However, the rotary cutting blade 4 is free to rotate in a free state and has a feature that an obstacle can be removed in a state without resistance.

  Next, in the embodiment shown in FIG. 19, in the hydraulic circuit 7 of FIG. 18, a switching valve 60 is provided between the drive circuit 58 to the hydraulic motor 6 and the unload circuit 59 that circulates hydraulic oil to the tank 8 side. Thus, the hydraulic oil can be switched between the drive circuit 58 and the unload circuit 59.

  In this hydraulic circuit 7, when the switching valve 60 is switched to the unload circuit 59 side regardless of whether the hydraulic pump 35 is driven or stopped, the hydraulic oil in the drive circuit 58 and the circulation circuit 57 is almost simultaneously transferred to the tank 8 side. There is an advantage that it is possible to circulate in a communication state and to release pressure.

  Next, the embodiment shown in FIG. 20 is another configuration example in which an unload valve 61 that switches by pilot pressure is used instead of the switching valve 60 of FIG. is there.

  Next, in the embodiment shown in FIG. 21, in the embodiment of FIG. 20, the backflow flows into the circulation circuit 57 that communicates the hydraulic motors 6 and 6, and the drive circuit 58 that communicates from the hydraulic pump 35 to the hydraulic motor 6, respectively. A pressure relief circuit 55 having a prevention valve 62 is provided to communicate with the pressure relief valve 56. Reference numeral 63 denotes a backflow prevention valve provided in the drive circuit 58, which has a valve configuration that opens above the unload pressure.

Accordingly, the embodiment shown in FIG. 21 has a feature that the safety is enhanced by the above configuration so that the hydraulic motor 6 does not malfunction due to the unload pressure.
As described above, each embodiment of the present invention has been specifically described. First, in the case of the embodiment described in claim 1 in this specification, the conventional combine has a strong tendency to pre-balance, and therefore various adverse effects are caused. In order to improve this, the oil tank 8 is mounted on the rear position of the chassis 1 and corrected. In the combine according to this embodiment, the back and forth shaking during the work is extremely reduced, and it is possible to eliminate the head loss caused by the shaking while keeping the cutting height constant.

  In the embodiment of the present invention, the oil tank 8 is installed at a high position in the rear portion, so that dust or the like is less likely to fall down, dust accumulation is reduced, and the trouble of cleaning or the like is greatly reduced, so that it can be easily performed. There are also features.

  Next, in the case of the embodiment of the invention described in claim 2, the oil tank 8 is disposed on the upper side of the dust cover 9 provided with a rear slope in order to discharge the dust to the field scene below the rear of the chassis 1. Since the oil tank is installed, there is no accumulation of oil leaking from the tank 8 when oil is replenished, and the conventional problems can be solved.

  In other words, the oil tank 8 may flow out of the oil for maintenance such as oil replenishment. Even in such a case, the oil tank 8 is drained to the ground by passing the top surface of the inclined dust cover 9 as described above. As a result, problems such as oil pooling on the chassis could be eliminated.

  Next, in the case of the embodiment of the invention described in claim 3, a rise in the oil temperature is always a problem during the operation of the hydraulic device 7, and a large-capacity tank has been conventionally used to solve this problem. In the embodiment, the fan 11 is provided in the input pulley 10 of the threshing device 2, and the oil tank 8 is disposed on the leeward side of the fan 11, so that the wind is blown and cooled during the operation to prevent the oil temperature from rising. At the same time, dust is prevented from collecting around the tank 8.

  Furthermore, since the fan 11 rotates and winds only during the threshing operation and cools in this embodiment, the threshing device 2 is stopped and the operation is interrupted so that the power is not wasted. It is said.

Top view of the combine Combine side view Side view of a part of the pre-cutting device Side view of a part of the pre-cutting device Side view of the cutting pretreatment device Side view of the cutting pretreatment device Plan view for explanation with a hydraulic circuit connected to the pre-cutting device Plan view of main parts Action plan view showing part of the combine Side view of the action showing part of the combine Top view of the combine Combine side view Top view of the combine Combine side view Top view of the combine Combine side view Combine side view Hydraulic circuit diagram Hydraulic circuit diagram Hydraulic circuit diagram Hydraulic circuit diagram

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chassis 2 Threshing device 3 Stem ridge conveying device 4 Rotary cutting blade 5 Cutting pretreatment device 6 Hydraulic motor 7 Hydraulic device 8 Oil tank 9 Dust cover 10 Input pulley 11 Fan

Claims (3)

  In front of the threshing device (2) mounted on the chassis (1), a plurality of pre-cutting processing devices (5) composed of at least a pedicle feeder (3) and a rotary cutting blade (4) are arranged in a row. The cutting pre-treatment device (5) is provided with a hydraulic motor (6) that transmits the rotary cutting blade (4), and a series of hydraulic devices (7) connected to the hydraulic motor (6). The oil tank (8) that constitutes a hydraulic device in a combine, wherein the oil tank (8) is constructed as an upper device at a rear position of the threshing device (2).   The hydraulic device for a combine according to claim 1, wherein the oil tank (8) is configured as an upper side of a dust cover (9) provided at a rear portion of the threshing device (2).   2. The hydraulic apparatus for a combine according to claim 1, wherein the oil tank is configured on the leeward side of a fan provided on an input pulley of the threshing apparatus. .

Images