CN107251707B - Ordinary combine harvester - Google Patents

Abstract

The invention provides a common combine harvester, which can effectively utilize the functions and efficiently perform picking operation. The harvesting machine comprises a main harvesting device (63) for harvesting and planting stalks in a horizontal posture along the horizontal direction and a roller type raking device (64) for raking and operating the planted stalks as a harvesting object by rotating teeth at the position above the main harvesting device (63), wherein the main harvesting device (63) is provided with a picking device (5) of which the front end side protrudes towards the front lower part than a cutting knife and can pick up the stalks in a horizontal posture.

Description

Ordinary combine harvester

The application is a divisional application of a prior application with the application number of 200910137932.X and a prior application with the application number of 201410388345.9 (the application dates are 4-30 th 2009, and the invention names are 'common type combine').

Technical Field

The invention relates to a common combine harvester. A general type combine harvester refers to a type of combine harvester for feeding a harvested crop (straw) entirely to a threshing device, and is also called a whole straw feeding type combine harvester.

Background

【1】 In the above-described general type combine harvester, in addition to a normal harvesting and threshing work for harvesting stalks planted in a farm, there are cases where beans, rapeseeds, and the like are harvested in advance, placed on a farm in an inverted posture, dried in the sun to a certain extent, and then picked up.

As a general type combine harvester which performs a normal harvesting and threshing operation and a picking operation, a harvester having the following structure has been known.

(1) A harvester in which a pickup head dedicated to pickup is attached to and detached from a platform of a feeding chamber of a general-purpose combine harvester (refer to JP6-245624 a).

(2) A harvester in which a cultivated crop harvesting head and a pickup head are replaceable at the tip end side of a feeder of a general type combine harvester (refer to JP2007-028999 a).

【2】 As the above-described conventional combine harvester, there is often used a structure in which the top side of a crop is raked by a raking roller, the root side of the crop is cut by a cutting device and harvested, the whole stalk of the harvested crop is fed to a rear threshing device, and entanglement between the crop to be harvested and the crop on the non-harvested side is disentangled by a dividing member and separated (see JP2005-211043 a).

【3】 In the above-described general type combine harvester, crops (coarse cereals) which are not planted in a row, such as rapeseed and sunflower, are sometimes harvested in addition to crops planted in a row, such as rice and wheat, and there are conventionally known harvesters having the structures described in the following (1) and (2).

(1) The top side of a crop is harrowed by a harrowing drum, the root side of the crop is cut by a cutting device and harvested, the whole harvested crop is fed to a rear threshing device, and entanglement between the crop to be harvested and the crop on the non-harvested side is disentangled by a dividing member and separated (see JP2005-211043 a).

(2) The method is known in which a flower receptacle of a crop (sunflower) is cut near the top of the crop in a raised posture by a harvesting device on the front end side, a residual stalk remaining on a farm is cut by a harvesting device located on the rear side near the ground to fall down to the farm, and entanglement between the crop to be harvested and the crop on the non-harvested side is disentangled by a dividing member to separate the crop (see JP2007-089464 a).

Disclosure of Invention

【1】 The problems associated with the background art [ 1 ] are as follows.

In the harvester of the conventional structure described in the above (1) and (2), the performance of the picking operation depends only on the performance of the picking device provided exclusively for the picking operation, and therefore, the picking device is required to be a high-performance device.

Further, if the picked-up object is light in weight and large in volume, the object that is not picked up may be pushed forward, which may cause a problem that the object is messy and difficult to smoothly feed into the threshing device.

The invention aims to provide a common combine harvester which effectively utilizes the functions of the common combine harvester and can carry out picking operation with high efficiency.

【2】 The problems associated with the background art [ 2 ] are as follows.

In harvesting of crops, the crops may be harvested, placed on a farm, dried, and then threshed. In such harvesting work, the crop placed on the farm is picked up and collected by a dedicated collection device and fed to a threshing device of a general-type combine harvester, and therefore, the collection work takes time and the dedicated collection device needs to be prepared.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a general-purpose combine harvester capable of efficiently collecting and threshing a crop placed on a farm after harvesting, in addition to performing normal harvesting.

【3】 The problems associated with the background art [ 3 ] are as follows.

In order to appropriately harvest crops having large differences in properties such as rice, wheat and miscellaneous cereals, it is desirable to change the specifications of the pre-harvest treatment apparatus, but if the pre-harvest treatment apparatuses having different specifications are separately manufactured, the cost increases.

Particularly, when harvesting a crop such as rapeseed which is entangled in a large amount, when separating and separating a crop to be harvested from a crop on a non-harvested side by a seedling separating member, problems such as ear drop, grain drop, and pulling of the non-harvested crop are likely to occur. In order to reduce such a problem, it is necessary to reduce the forward speed of the machine body to suppress the separating and opening action of the seedling separating member, and thus efficient harvesting by high-speed traveling cannot be performed.

The present invention has been made in view of the above circumstances, and a main object thereof is to provide an inexpensive general type combine harvester which is suitable for harvesting rice, wheat, and miscellaneous cereals.

【1】 Means for solving the problem [ 1 ] are as follows. That is to say that the first and second electrodes,

a combine harvester of the general type comprising: a main harvesting device for harvesting the planted stalks in a horizontal posture in a horizontal direction; a drum-type raking device which rotates raking teeth at a position above the main harvesting device and rakes the planted stalks as the harvesting objects; a conveying device for conveying the whole stalk which is harvested by the main harvesting device to the rear; the threshing device for threshing and sorting stalks delivered from the delivery device is characterized in that the main harvesting device is provided with a picking device, the front end side of which protrudes to the front lower side than the cutting knife and can pick up the stalks in a horizontal posture.

According to this feature, in the conventional combine harvester having the drum-type raking device, since the main harvesting device used together with the drum-type raking device is provided with the pickup device, the pickup operation of the pickup device and the raking operation of the drum-type raking device can be simultaneously performed with respect to the object to be picked.

Further, since the picking-up action of the pickup device and the cutting-off action of the main harvesting device can be simultaneously exerted, the main harvesting device can easily pick up the entangled weeds and the like of the harvest objects having a large picking-up resistance due to the entanglement of the weeds and the like in the farm during the picking-up operation.

Therefore, the drum-type raking device used in the normal harvesting and threshing work of the general combine harvester is also used for the picking work, and even for the large-volume harvested material, the harvested material can be smoothly harvested by using the picking up from the lower side and the raking from the upper side.

In addition, the auxiliary cutting function of the main harvesting device in the picking operation is used as a means for reducing the picking resistance to the harvested objects, and the picking operation can be performed with high efficiency.

In a preferred embodiment, the pickup device is configured to be freely removable from the main harvesting device. This structure has the following advantages.

That is, since the pickup device is configured to be attachable to and detachable from the main harvesting device, for example, when the pickup device at a position corresponding to a locally existing ridge or the like is detached within the harvesting width of the main harvesting device and a picking operation is performed (in order to avoid contact between the pickup device and the ridge), or when the object to be harvested is harvested in a state of being smaller than the harvesting width and being biased to one side within the harvesting width, or the like, the mounting position of the pickup device can be selected and mounted, and there is an advantage that a functionally excellent picking operation can be performed.

In a preferred embodiment, the drum-type raking device is configured to rake the stalks from a front side of a front end of the picking device. This structure has the following advantages.

Namely, the following advantages are provided: the stalks can be raked by the drum type raking device from the front side of the front end of the picking device, so that the feeding of the harvested objects by the picking device can be carried out to the picking starting position of the picking device, and the return of the harvested objects which are not picked up by the picking device to the front side is limited. Therefore, efficient picking work by the picking device is facilitated, scattering of the harvested objects which have not been picked up to the front side is restricted, and the harvested objects are again sent to the picking device, so that picking work with less missing of harvesting can be expected.

In a preferred embodiment, a skid is mounted that supports a pre-processing frame having a main harvesting device for ground-engaging travel so as to maintain the front end of the picking device in a floating state with respect to the ground. This structure has the following advantages.

That is, the pick-up device can be prevented from contacting the ground by the sliding body that travels in a ground-contact manner while supporting the pretreatment frame, and the pick-up operation can be performed while maintaining the height of the pick-up device relative to the ground in an appropriate state. Therefore, the picking function of the picking device can be stably maintained, and a good picking operation can be performed.

In a preferred embodiment, a pusher-type sub-harvesting device is provided at a lateral end of a harvesting area of the main harvesting device, and the sub-harvesting device is in a standing posture in which a cutting action line connecting cutting action portions of the cutting knife is vertically oriented. This structure has the following advantages.

That is, since the pusher-type sub-harvesting device that cuts the stems in the standing posture in the vertical direction is provided at the lateral side end portion of the harvesting action area of the main harvesting device, even if entanglement between the stem to be harvested and the stem on the non-harvesting side is not eliminated, the entangled stem portion can be cut by the sub-harvesting device independently of the above-described picking-up operation, and there is an advantage that it is possible to provide a general-type combine harvester that cuts the link between the stem to be harvested and the stem on the non-harvesting side and that can perform harvesting and threshing well.

In this case, if a clutch device is provided which can independently switch on or off the power to/from the sub-harvesting device independently of the main harvesting device and the drum-type raking device, the work can be performed in a state where the driving of the sub-harvesting device is independently stopped independently of the main harvesting device and the drum-type raking device. Therefore, when a picking-up operation is performed for picking up a previously harvested stalk using the picking-up device, the operation is easily performed in which the main harvesting device and the drum-type raking device are driven to be efficient, and the operation is performed in which the driving of the sub-harvesting device is stopped to reduce power loss.

In addition, when the power transmission mechanism for transmitting the driving force to the sub-harvesting device is provided on the transmission downstream side of the main harvesting device, which is inevitably driven when the sub-harvesting device is driven, is also used as a part of the power transmission mechanism for transmitting the driving force to the sub-harvesting device, and therefore, there is an advantage that the transmission structure can be simplified.

In addition, the power transmission mechanism is provided with a power transmission system for transmitting the driving force to the main harvesting device and the drum-type raking device and a power transmission mechanism for transmitting the driving force to the auxiliary harvesting device when the driving force transmitted to the auxiliary harvesting device is output from the power transmission system of the conveying device for conveying the stalks toward the threshing device, independently of the power transmission system for transmitting the driving force to the main harvesting device and the drum-type raking device.

【2】 Means for solving the problem [ 2 ] are as follows. That is to say that the first and second electrodes,

a common combine harvester is provided with a main harvesting device for harvesting and planting crops in a horizontal posture on a liftable pre-harvesting processing device, a roller type raking device for raking and planting the crops which are taken as a harvesting object by raking and raking operation through rotating teeth at a position above the main harvesting device, and a threshing device for feeding the whole crops harvested by the main harvesting device and performing threshing and sorting treatment,

the pre-harvesting treatment device is provided with a pickup device which protrudes forward than the main harvesting device and picks up the crops on the ground, and a sliding body which is grounded and limits the descending limit of the pre-harvesting treatment device,

in a state where the slider is grounded, the tip end portion of the pickup device approaches the ground.

According to the above configuration, the pre-harvest treatment apparatus is positioned at an arbitrary height corresponding to the height of the planted crop during normal harvest. When a crop to be harvested is placed on a farm, the pre-harvest treatment apparatus is moved forward in a state where it is lowered to a position where the runner is provided, the crop on the ground is picked up by the pickup apparatus, raked rearward by the drum-type raking apparatus, and thereafter conveyed to the threshing apparatus in the same manner as in the case of normal harvesting.

In this case, the front end portion of the pickup device is located close to the ground and at a height suitable for picking up the crop while the front end portion of the pickup device is restricted from descending by the grounding of the runner, and therefore, the front end portion of the pickup device is not damaged by being forcibly collided with the ground by the forward travel of the front end portion of the pickup device only by inadvertently descending the front end portion of the pickup device, and the pickup operation with less picking-up omission can be performed.

In a preferred embodiment, the pre-harvest treatment apparatus is provided with a sub-harvest apparatus for cutting the planted crop in a vertical posture in a vertical direction at a lateral side end portion of the harvesting action region of the main harvest apparatus. This structure has the following advantages.

That is, the general-type combine harvester is used for harvesting coarse grain crops such as rapeseed and buckwheat in addition to rice and wheat, and when harvesting a crop such as rapeseed which is highly entangled, if a crop to be harvested is separated from a crop on the non-harvesting side by a seedling separating member, problems such as ear drop, grain drop, and crop pulling are likely to occur. In order to reduce such a problem, it is necessary to reduce the forward speed of the machine body to suppress the stirring action of the dividing member, and thus to prevent efficient harvesting in high-speed traveling.

According to the above configuration, even when the harvest target object introduced into the harvesting area of the main harvesting device is strongly entangled with the non-harvested crop, the entangled crop can be cut and separated by the sub-harvesting device disposed at the lateral side end portion of the harvesting area of the main harvesting device, and the crop on the main harvesting device side of the sub-harvesting device can be gathered in the harvesting area, so that ear and grain dropping due to the insufficient plucking can be minimized, and the harvesting operation can be smoothly performed at a desired traveling speed.

In a preferred embodiment, the sliding bodies formed in a horizontally long shape are provided near the left and right ends of the lower side of the pre-harvest treatment device. According to this configuration, even if the pre-harvest treatment apparatus is supported on the ground in a grounded manner, the heavy weight of the pre-harvest treatment apparatus can be stably supported by the large ground contact area and the large left-right interval of the left and right sliding bodies.

Further, if the slider is formed in a box shape having a bottom surface, front and rear surfaces, and left and right side surfaces, the strength of the slider is increased, and the weight of the pretreatment device for harvesting can be reliably supported. Even if the body is operated in a state that the skid is grounded and the pre-harvest treatment device is pulled in the transverse direction, soil does not enter and adhere to and stay in the skid, and the problem that the lifting load of the pre-harvest treatment device is increased and the lifting speed is reduced due to the weight of the adhered soil is solved. Further, the slide body after the work can be easily cleaned.

【3】 Means for solving the problem [ 3 ] are as follows. That is to say that the first and second electrodes,

a general combine harvester is provided with a pre-harvest treatment device connected to the front part of a feeder connected to the front part of a threshing device, the pre-harvest treatment device comprising: a main harvesting device for harvesting the planted crops, a conveying screw conveyor for conveying the harvested crops to the front part of the feeder, a roller type raking device for raking the planted crops as the harvesting object by rotating the raking teeth, which is characterized in that,

the pre-harvesting treatment device is composed of a rear unit connected with the feeder and a front unit connected with the rear unit,

the rear unit is provided with a screw conveyor for conveying and a roller type raking device, and the rice and wheat unit and the coarse cereal unit can be replaced as a front unit and connected with the rear unit,

the rice/wheat unit has a main harvesting device in a horizontal posture,

the unit for coarse cereals has a main harvesting device in a horizontal posture, and an auxiliary harvesting device for cutting and planting crops in a vertical posture is provided at a lateral side end position of a harvesting action area of the main harvesting device.

According to the above configuration, by using the coarse grain unit as the front unit, the pre-harvest treatment apparatus having a specification suitable for harvesting crops such as highly tangled rapeseeds can be configured. In this specification, even when a harvest target object introduced into the harvesting area of the main harvesting device is strongly entangled with an unharvested crop, the entangled crop is cut and separated from the left and right by the sub-harvesting device disposed at the lateral side end portion of the harvesting area of the main harvesting device, so that the crop located on the main harvesting device side of the sub-harvesting device can be gathered into the harvesting area, ear drop and grain drop due to the insufficient plucking can be minimized, and harvesting work can be smoothly performed at a desired traveling speed.

If the rice/wheat unit is used as the front unit, a pre-harvest treatment apparatus of a standard that does not require cutting and separating the tangle between the harvested object and the non-harvested crop can be configured, and rice/wheat with less tangle can be harvested smoothly.

Therefore, the pre-harvest treatment device suitable for harvesting coarse cereals in specification and the pre-harvest treatment device suitable for harvesting rice and wheat in specification can be assembled in common with the rear unit, and can be manufactured at a lower cost than the whole pre-harvest treatment device manufactured in each specification. The transformation from the standard of coarse cereals to the standard of rice and wheat and the transformation from the standard of rice and wheat to the standard of coarse cereals can be easily and cheaply carried out.

In a preferred embodiment, the distance between the main harvesting device and the conveying screw conveyor in a state where the unit for rice and wheat is connected to the rear unit is set to be smaller than the distance between the main harvesting device and the conveying screw conveyor in a state where the unit for coarse cereals is connected to the rear unit.

That is, the crop harvested by the main harvesting device is received with a margin in a long space in the front and rear direction in a state where the unit for miscellaneous cereals is connected, and the crop having a certain volume can be smoothly guided to the conveying screw conveyor. In the state of connecting the rice and wheat unit, crops harvested by the main harvesting device can be directly conveyed to the front part of the feeder by the conveying screw conveyor without providing a horizontal space, and the crops can be smoothly fed into the feeder without being accumulated behind the main harvesting device.

Other embodiments and advantageous effects achieved by the other embodiments will be apparent with reference to the drawings and the following description.

Drawings

Fig. 1 is a right side view of an entirety of a general type combine harvester according to embodiment 1 of the present invention;

fig. 2 is a left side view of the entirety of a general type combine harvester;

fig. 3 is a plan view of the whole of a general type combine harvester;

FIG. 4 is a chart illustrating the transmission system;

FIG. 5 is a left side view showing the secondary harvesting portion;

fig. 6 is a front view showing a transmission configuration for transmitting power to the sub-harvesting device;

FIG. 7 is a sectional view taken along line VII-VII of FIG. 5;

fig. 8 is a left side view showing a mounted state of the pickup device;

fig. 9 is a perspective view showing the pickup device;

fig. 10 is a sectional view and a plan view showing a mounted state of the pickup device;

fig. 11 is an overall plan view of the main harvesting apparatus;

FIG. 12 is a left side view showing the clutch mechanism of the slitting knife;

FIG. 13 is a sectional view showing an attachment structure of the drum type raking device;

fig. 14 is a perspective view showing an anti-scattering plate;

FIG. 15 is a left side view showing the relationship between the roller raking device and the longitudinal cutter;

FIG. 16 is a left side view showing the relationship between the roller raking device and the longitudinal cutter;

fig. 17 is a left side view showing a sub-harvesting device portion according to another mode 1 of the embodiment 1;

fig. 18 is a diagram showing a transmission system of another mode 1;

fig. 19 is a left side view of the whole of a general type combine harvester according to embodiment 2 of the invention;

fig. 20 is a right side view of the entirety of a general type combine harvester;

fig. 21 is a plan view of the entirety of a general type combine harvester;

FIG. 22 is a chart showing the transmission system;

FIG. 23 is a left side view showing the pre-harvest treatment apparatus;

fig. 24 is a front view showing a transmission configuration for transmitting power to the sub-harvesting device;

FIG. 25 is a horizontal cut-away top view of the secondary harvesting device;

fig. 26 is a side view showing a driving configuration of the sub-reaping apparatus;

fig. 27 is an exploded perspective view (a) and an assembled perspective view (b) of the pickup device;

fig. 28 is a side view (a) and a top view (b) of the pickup mounted on the main harvesting unit;

fig. 29 is a top view of the main harvesting device with the pickup mounted;

FIG. 30 is a side view showing a longitudinal cutter clutch mechanism;

FIG. 31 is a partial longitudinal cross-sectional side view showing a supporting structure of the roller raking device;

FIG. 32 is a perspective view showing an anti-scatter plate;

FIG. 33 is a left side view of the pre-harvest treatment apparatus in a state where the drum-type raking device is positioned at the middle of the elevation range;

fig. 34 is a left side view of the pre-harvest treatment apparatus as viewed from the inside of the harvester;

fig. 35 is a horizontal cross-sectional plan view showing a drive section cover structure in the sub-reaping apparatus;

fig. 36 is a side view of the entire normal type combine harvester in an operating state in which the pre-harvest treatment device is lifted;

fig. 37 is an overall plan view of a conventional combine harvester without the pickup;

fig. 38 is a side view showing the coarse cereal unit and the rear unit separated;

FIG. 39 is a side view of the pre-harvest treatment apparatus with the rice and wheat unit mounted thereon;

FIG. 40 is a side view showing the rice and wheat unit and the rear unit separated from each other.

Detailed Description

Hereinafter, embodiments of a normal type combine-harvester (normal type combine-harvester) according to the present invention will be described with reference to the accompanying drawings.

In the following description, unless otherwise specified, the direction in which the travel machine body of the combine moves forward and backward is referred to as the front-rear direction, the horizontal direction orthogonal to the front-rear direction is referred to as the left-right direction, and the direction perpendicular to the front-rear direction and the left-right direction is referred to as the up-down direction.

[ 1 st embodiment ]

First, a1 st embodiment of a general type combine harvester according to the present invention will be described with reference to fig. 1 to 18.

[ integral Structure ]

As shown in fig. 1 to 3, in a general type combine according to the present invention, a body frame 10 is mounted on a pair of left and right crawler travel devices 11, 11 to form a self-propelled body 1, and the self-propelled body 1 is mounted with a riding drive unit 2 equipped with a drive seat 20, a prime mover 3 equipped with an engine 30 positioned below the drive seat 20, a threshing device 4 for threshing and sorting objects to be processed, and a bagging device 13 for bagging the threshed objects to be processed.

A feeder 60 (an example of a conveyor) 60 of the pre-harvest treatment device 6 for harvesting the stalks to be harvested is rotatably connected to the front side of the body of the self-propelled body 1 about a horizontal axis x at the rear end thereof, and a combination of these devices constitutes a general combine harvester for threshing the entire stalk of the harvested threshing object.

[ threshing system structure ]

The threshing device 4 is configured to perform threshing by an axial flow type threshing cylinder 40 that rotates around an axis in the front-rear direction of the traveling body, sort the threshed products into threshed grains and discharge stalks, and supply the threshed grains to the storage bin 14 of the bagging device 13. The discharge straw and the like other than the threshed objects to be bagged fall and discharged to the rear of the bicycle body 1. In fig. 2, reference numeral 15 denotes an auxiliary plate supported to be vertically swingably switchable between a lowered use posture, in which the auxiliary plate horizontally protrudes outward in the lateral direction of the traveling machine body from the machine body frame 10, and a raised storage posture, in which the auxiliary plate is swung upward from the lowered use posture so as to follow the vertical direction of the traveling machine body.

[ Structure of reaping System ]

The pre-harvest treatment apparatus 6 includes a pair of left and right grain dividers 62 and 62 as grain dividing members, a pusher-type main harvesting apparatus 63 for harvesting the planted stalks in the harvesting target area divided by the grain dividers 62 and 62, and a pusher-type sub-harvesting apparatus 7 as a vertical harvesting apparatus, in a front portion of a pre-treatment frame 61. The sub-harvesting unit 7 will be described in detail later.

The pre-harvest treatment apparatus 6 further includes a drum type raking device 64 positioned above the main harvesting device 63 and rotating to rake the upper end side of the planted stalks toward the rear side of the pre-treatment frame 61, a conveying screw conveyor 65 is provided on the upper surface side of the bed 61A positioned below the pre-treatment frame 61, the harvested stalks harvested by the main harvesting device 63 and raked on the bed 61A are gathered and conveyed to the front side of the feeder 60 by the conveying screw conveyor 65, and the harvested stalks positioned at the front side of the feeder 60 are fed to the feeder 60 by the raking rod 65a of the conveying screw conveyor 65 which is rotatable integrally with the conveying screw conveyor 65.

The feeder 60 is configured as a conveying device in which the harvested stalks supplied from the conveying screw conveyor 65 are conveyed to the rear end side of the feeder 60 by a feeder conveyor 60a provided inside thereof, and the entire harvested stalks are supplied from a discharge port (not shown) on the rear end side to a threshing chamber (not shown) of the threshing device 4 and conveyed. The feeder 60 is configured to be capable of freely swinging up and down about the horizontal axis x by a lifting cylinder 12 installed between the feeder 60 and the machine body frame 10, and to be capable of freely changing its posture into a lowered harvesting operation state in which a platform 61A located below the pretreatment frame 61 is lowered to the vicinity of the ground and a raised harvesting operation state in which the platform 61A is raised high from the ground by a vertical swinging operation with respect to the threshing device 4.

The drum raking device 64 has a well-known structure in which teeth 64b for raking stems are provided on an outer peripheral portion thereof, and are rotationally driven by a driving force input from a harvesting input shaft 66 to be described later via a belt transmission mechanism 64c, so that the stems are raked from the front side to the rear side of the machine body with the outer peripheral side teeth 64b always facing downward.

As shown in fig. 13, in the roller raking device 64, a drive shaft 64a is attached to a saddle 64e which is slidable in the longitudinal direction of a roller support rod 64d and is freely changeable to a plurality of positions in the front-rear direction, and the position of the rotation axis of the drive shaft 64a is changed in the front-rear direction (the longitudinal direction of the roller support rod 64 d) by performing a position changing operation of the saddle 64 e. The position of the saddle 64e with respect to the roller support rod 64d can be fixed by inserting and extracting the stopper pin 64g into and from the stopper hole 64f penetrating the roller support rod 64 d.

In this case, in the transmission structure for transmitting power to the roller-type raking device 64 after changing the front-rear position, the position of the tension pulley of the belt tensioner provided in the belt transmission mechanism 64c, which is not shown, is changed, so that predetermined power transmission can be performed even when the front-rear position is changed.

The position change of the rotation axis of the drive shaft 64a is performed in association with the use form of the roller raking device 64, and when harvesting of ordinary rice and wheat is performed without using the pickup device 5 and the sub-harvesting device 7 described later, the roller raking device 64 is lifted up to the upper side of the state shown in fig. 5, and is moved rearward as shown in fig. 15 so that the rotation axis of the roller raking device 64 is located near the upper position of the main harvesting device 63, and is used in this state.

When picking up work is performed using the pickup device 5 or the sub-harvesting device 7 described later, or harvesting and threshing work of rapeseeds or the like using the sub-harvesting device 7 is performed, the raking action of the roller raking device 64 is exerted from the front side of the front end of the pickup device 5 due to the positional relationship with the pickup device 5 or the sub-harvesting device 7, or the stem feeding direction of the roller raking device 64 is a direction orthogonal or substantially orthogonal to the cutting action line CL of the sub-harvesting device 7 when the machine body is viewed from the side. At this time, when the saddle 64e is moved to the forefront as shown in fig. 13 and the drum-type raking device 64 is lowered to the lowermost end as shown in fig. 5, the rotational axis of the drum-type raking device 64 is positioned above the vicinity of the end of the picking device 5, and the picking operation is performed.

In addition, when harvesting and threshing operations of rapeseeds and the like using the sub-harvesting device 7 are performed, the roller-type raking device 64 is lifted up to a position slightly above the state shown in fig. 5 to be in the state shown in fig. 16, and the rotation axis of the roller-type raking device 64 is in a state of being substantially coincident with the cutting action line CL of the sub-harvesting device 7 in a side view of the machine body, and is used in a state of being orthogonal or substantially orthogonal to the cutting action line CL of the sub-harvesting device 7 in a side view of the machine body in the stem feeding direction of the roller-type raking device 64.

On the lower surface side of the platform 61A, a runner 56 is provided which is in sliding contact with the running ground in a lowered harvesting operation state in which the platform 61A located below the pretreatment frame 61 is lowered to the vicinity of the ground. The slider 56 is attached so as to project below the lower surface of the platform 61A as described later and maintain a state in which the tip of the pickup device 5 is slightly raised with respect to the ground, and thus the tip of the pickup device 5 does not project into the ground when the pickup device 5 for picking up a stem lying on the ground is attached to the main harvester 63.

As shown in fig. 2 and 5, a scattering prevention plate 9 is provided at the rear side of the roller raking device 64, near the inlet of the feeder 60 above the conveying screw conveyor 65, and at the rear upper side.

As shown in fig. 5 and 14, the scattering prevention plate 9 is formed in a channel shape by a rear surface portion 90 in a backward tilted posture and side surface portions 91 on both left and right sides thereof. The rear surface portion 90 and the side surface portions 91 on both left and right sides thereof are formed into a channel-like shape by a frame 92 and a rubber blade 93 laid on the inside of the frame 92, and the frame 92 is formed of a channel-like upper edge frame portion along the upper edge portion thereof and a vertically oriented support plate portion supporting the upper edge frame portion.

The scattering prevention plate 9 is improved so as not to narrow the field of view as much as possible when the riding operator 2 performs the operation or the front view is observed, and the scattering prevention plate 9 is configured to catch the rapeseed or the like that has jumped up from the front side, to flow down to the front side, and to return to the feeding path of the feeder 60.

That is, the backward tilting degree and the vertical height of the scattering prevention plate 9 are set to the following degrees: as shown by a line a1 in fig. 2, when the average size driver sits on the driver seat 20 and looks down in front, the tip end side of the pickup device 5 can be visually observed, and as shown by a line a2 in fig. 2, the cutting blade of the main harvesting device 63 can be seen when looking in a forward bent posture.

The scattering prevention plate 9 is effective for preventing the harvested material from scattering when performing the picking work, but in the usual harvesting work, the scattering prevention plate 9 is not required to be used in many cases, and therefore the scattering prevention plate 9 is configured to be detachable from the pretreatment frame 61 so as to be detachable.

[ Structure of pickup apparatus ]

As shown in fig. 8 to 11, the pickup device 5 is composed of a round bar-shaped elevating section 50, a side-view L-shaped mounting plate 51 welded and fixed to a lower portion of a rear end side of the elevating section 50, and a side-view triangular reinforcing plate member 52 welded and fixed between a lower edge side of the elevating section 50 and a front surface side of the mounting member 51, and the pickup device 5 is fixed to a blade support frame 61B attached to a pretreatment frame 61 by inserting a fixing bolt 53 into a mounting hole 51a formed in a rear end side of the mounting member 51 and composed of a long hole.

The pickup devices 5 are provided at a plurality of positions (5 positions in fig. 3) within the harvesting width of the main harvesting device 63, and the pickup devices 5 perform a picking operation by submerging the tip ends of the elevating portions 50 under stalks which have been harvested in advance and are in a horizontal posture, and the pickup devices 5 are provided within the harvesting width of the main harvesting device 63 as follows.

The main harvesting unit 63 is constituted by a combination of a fixed blade 63A fixed to the blade support frame 61B and a movable blade 63B slidable relative to the fixed blade 63A, and the pickup unit 5 of the present invention is provided along an extension line of one of the fixed blades 63A.

That is, a punched hole 54 into which the tip portion of the fixed blade 63A is inserted is formed in the front plate portion 51A of the mounting member 51 at a position facing the fixed blade 63A, and a notch 55 having a shape similar to the shape of the tip portion of the fixed blade 63A is formed in the reinforcing member 52 at a position facing the fixed blade 63A.

Therefore, when the fixing bolt 53 is inserted into the mounting hole 51a of the mounting member 51 and fastened, the upper portion of the notch 55 of the reinforcing member 52 is positioned to extend to the upper edge of the distal end portion of the fixed blade 63A, and the pickup device 5 is supported by the upper portion and the fixing portion of the fixing bolt 53 in a state where the pickup device 5 is positioned on the extension line of the fixed blade 63A in a plan view.

At this time, the rear end side of the lifting unit 50 is located at a position away from the upper side of the main harvesting unit 63. Further, the movable blade 63B of the main harvesting device 63 is formed within the following range: the guide groove 63Aa formed in the fixed blade 63A does not protrude beyond the vertically oriented front side plate portion of the mounting member 51 on which the punch hole 54 is formed, and therefore, the operation can be performed without being disturbed by the presence of the pickup device 5, and the harvesting operation of the main harvesting device 63 can be performed simultaneously even in the picking operation state in which the pickup device 5 is mounted.

[ Structure of Transmission System ]

Fig. 4 is a diagram showing a power transmission system for transmitting the driving force of engine 30 to crawler belt traveling device 11 and each device on the body frame.

As shown in fig. 4, the transmission mechanism that transmits the drive force of the output shaft 30a of the engine 30 to the input shaft 22a of the hydrostatic continuously variable transmission 22 via the belt transmission mechanism 21 transmits the drive force of the output shaft 22b of the hydrostatic continuously variable transmission 22 to a gear transmission unit (not shown) in the transmission case 23, and the gear transmission unit transmits the drive force to the pair of left and right crawler travel devices 11 and 11.

The hydrostatic continuously variable transmission 22 is connected to the transmission case 23. The hydrostatic continuously variable transmission 22 includes a variable displacement type axial plunger hydraulic pump having the input shaft 22a as a pump shaft, and an axial plunger hydraulic motor driven by pressure oil from the hydraulic pump.

The transmission mechanism for transmitting power to the threshing device 4 causes the output shaft 30a of the engine 30 to be linked to one end side of the fan drive shaft 41 of the threshing device 4 via the belt transmission mechanism 31, causes the other end side of the fan drive shaft 41 to be linked to the primary screw conveyor 43 and the secondary screw conveyor 44 of the threshing device 4 via the belt transmission mechanism 42, and causes the power output shaft 45 provided on the belt transmission mechanism 42 to be linked to the sorting device drive shaft 47 of the threshing device 4 via the belt transmission mechanism 46.

The transmission mechanism for transmitting the driving force output from the output shaft 30a of the engine 30 to the box input shaft 34 of the transmission box 33 via the belt transmission mechanism 31, the fan drive shaft 41, and the belt transmission mechanism 32 provided on the other end side of the fan drive shaft 41 transmits the driving force of the box input shaft 34 to the threshing cylinder 40 from the threshing cylinder output shaft 35 of the transmission box 33, and transmits the driving force of the box input shaft 34 to the harvesting input shaft 66 of the pre-harvesting processing device 6 via the forward rotation clutch 37 or via the harvesting output shaft 36 and the reverse rotation clutch 38 of the transmission box 33. As will be described below, the power transmission will be described in further detail.

The transmission case 33 houses a bevel gear mechanism 48, and the bevel gear mechanism 48 includes a bevel gear 48a integrally rotatably provided at an end portion of the case input shaft 34. The bevel gear mechanism 48 includes, in addition to a bevel gear 48a, a bevel gear 48b provided at an end of the harvesting output shaft 36 so as to be integrally rotatable, and a bevel gear 48c provided at the threshing cylinder output shaft 35 so as to be integrally rotatable in a state of being engaged with the bevel gear 48a and the bevel gear 48 b. That is, the bevel gear mechanism 48 can cause the box input shaft 34 in the transverse direction of the traveling machine body and the threshing cylinder output shaft 35 in the front-rear direction of the traveling machine body to be interlocked with each other, and cause the box input shaft 34 and the harvesting output shaft 36 to be interlocked with each other in a state where the rotation direction of the box input shaft 34 is opposite to the rotation direction of the harvesting output shaft 36.

As shown in fig. 4, the forward rotation clutch 37 is a belt tension clutch that switches between an engaged state and a disengaged state by switching a transmission belt 37a wound around the box input shaft 34 and one end side of the reaping input shaft 66 between a tensioned state and a relaxed state by means of a tension pulley body 37 b. The forward rotation clutch 37 transmits the driving force of the box input shaft 34 to the harvesting input shaft 66 as a driving force for driving the pre-harvest treatment device 6 in the forward rotation direction by switching to the engaged state.

As shown in fig. 4, the reverse rotation clutch 38 is a belt tension clutch that switches the transmission belt 38a wound around the reaping output shaft 36 and the other end of the reaping input shaft 66 between a tensioned state and a loosened state by means of a tension pulley body 38b, and switches between an engaged state and a disengaged state. The reverse rotation clutch 38 is switched to the engaged state, and transmits the driving force of the harvesting output shaft 36 to the harvesting input shaft 66 as a driving force for driving the pre-harvest treatment device 6 in the reverse rotation direction.

As shown in fig. 4, the harvesting input shaft 66 serves as a conveyor drive shaft for driving the feeder conveyor 60 a. The harvesting input shaft 66 is linked with a drive shaft 67 of the main harvesting unit 63 via a transmission chain 66 a. The drive shaft 67 and the drive shaft 68 of the conveying screw 65 are linked by a transmission chain 66 b. The drive shaft 68 of the conveying screw conveyor 65 and the drive shaft 64a of the roller raking device 64 are interlocked with each other by an interlocking mechanism using a transmission chain 66c and a transmission belt 66 d.

The power from the drive shaft 67 is input to a known motion direction conversion mechanism 69 attached to the drive shaft 67, and the rotational motion of the drive shaft 67 is converted into the reciprocating rotational motion of the drive shaft 67a by the motion direction conversion mechanism 69. The cutter of the main harvesting unit 63 is linearly driven in a reciprocating manner by the reciprocating rotation of the transmission shaft 67 a.

When the driving force in the forward rotation direction is transmitted to the harvesting input shaft 66, the feeder conveyor 60a, the conveying screw conveyor 65, the main harvesting device 63, and the drum raking device 64 of the pre-harvesting treatment device 6 are driven in the forward rotation direction to perform the normal pretreatment work and the conveying work, and when the driving force in the reverse rotation direction is transmitted to the harvesting input shaft 66, the feeder conveyor 60a, the conveying screw conveyor 65, the main harvesting device 63, and the drum raking device 64 of the pre-harvesting treatment device 6 are driven in the rotation direction opposite to the normal work rotation direction.

The power transmission to the sub-reaping apparatus 7 is a reciprocating motion transmitted from the drive system of the main reaping apparatus 63 via a vertical reaping linkage 8 (an example of a power transmission mechanism that transmits a driving force to the sub-reaping apparatus), and the vertical reaping linkage 8 will be described later together with the structure of the sub-reaping apparatus 7.

[ Structure of auxiliary reaping apparatus ]

As shown in fig. 3 to 6, a sub-harvesting unit 7 for cutting the stem of rapeseed is provided at the lateral end (left side) of the pre-harvest processing unit 6 at a position on the non-harvesting side in the harvesting region of the main harvesting unit 63 in a vertically standing posture.

As shown in fig. 5 to 8, the sub-harvesting unit 7 is constituted by a pair of left and right cutter bodies 71, the pair of left and right cutter bodies 71, 71 are constituted by long pusher-type cutters configured to be relatively slidable at positions on the front surface side of the mounting frame 70, and the pair of left and right cutter bodies 71, 71 are driven by the driving force of the main harvesting unit 63 via a vertical harvesting linkage 8 to be described later.

The pair of left and right cutter bodies 71, 71 have lower ends fixed to the left pretreatment frame 61 of the pretreatment device 6 and upper ends attached to the attachment frame 70 supported by the support rod 72.

A plate-shaped guide plate 74 protruding forward is provided on the front surface side of the square cylindrical frame body 73 of the mounting frame 70, and the pair of left and right cutting blades 71, 71 and the blade holding member 75 holding the pair of left and right cutting blades 71, 71 from both left and right sides are mounted in a state of embracing the guide plate 74 from both sides, so that the pair of left and right cutting blades 71, 71 can reciprocate up and down along the guide plate 74.

The pair of left and right cutting blades 71, 71 configured as described above are connected via the vertical harvesting linkage 8 to be driven by the driving force of the main harvesting unit 63.

As shown in fig. 4 and 5 to 8, the vertical harvesting linkage 8 includes an input linkage 80 that is linked with the movable knife 63B of the main harvesting unit 63 and guides the movement of the movable knife 63B in the reciprocating sliding direction, a relay shaft 81 that integrally has an arm 81a connected to the input linkage 80 and faces in the front-rear direction, a swing member 82 that is fitted around the relay shaft 81, an output linkage 84 that transmits the reciprocating swing motion of the swing member 82 as the vertical reciprocating motion of the pair of left and right cutting blades 71, and a vertical harvesting blade clutch (an example of a clutch of a sub-harvesting unit) 85 that can be switched between a state in which the reciprocating rotational motion of the relay shaft 81 caused by the swing motion of the arm 81a is transmitted as the swing motion of the swing member 82 and a state in which the transmission is cut off.

As shown in fig. 4 and 12, the longitudinal blade clutch mechanism 85 includes an engaging projection 81b integrally projecting from the relay shaft 81, an engaging hole 83a formed in the hub member 83 of the swing member 82 so as to be engageable with and disengageable from the engaging projection 81b, and an operating lever 86 for performing an engaging and disengaging operation of the engaging projection 81b and the engaging hole 83a by changing the position of the hub member 83 in the axial direction of the relay shaft 81.

The hub member 83 is always biased toward the clutch engagement side, i.e., the side where the engagement projection 81b and the engagement hole 83a are engaged, by a biasing spring 87 provided in the relay shaft 81.

In a state where the clutch release operation is performed, that is, the engagement between the engagement projection 81b and the engagement hole 83a is released, as shown in fig. 12 (b), the operation lever 86 can be fixed to the locking portion 61a formed in a part of the pretreatment frame 61 in a hooked state.

With the above configuration, the sub-harvesting device 7 transmits the reciprocating linear motion of the main harvesting device 6 to the input link 80 in accordance with the driving of the main harvesting device 6, and the reciprocating linear motion of the input link 80 is converted into the swinging motion of the arm 81a, and becomes the reciprocating rotational motion of the relay shaft 81 itself around the shaft center.

Then, the reciprocating rotational motion of the relay shaft 81 is converted into the oscillating motion of the oscillating member 82 and the reciprocating linear motion of the output link 84 via the longitudinal cutter clutch mechanism 85, and the pair of left and right cutter bodies 71, 71 reciprocate to cut the target stem.

At this time, if the driving of the sub-mowing apparatus 7 is required, the longitudinal cutter clutch mechanism 85 is brought into the engaged state, and if the driving of the sub-mowing apparatus 7 is not required, the state may be set to the disengaged state, and the driving of the sub-mowing apparatus 7 may be stopped alone by driving only the main mowing apparatus 63. That is, the vertical cutter clutch mechanism 85 constitutes a clutch device that can individually turn on or off the drive of the sub-mowing device 7.

The sub-reaping apparatus 7 is disposed in front of the main reaping apparatus 63 at the stalk cutting position and behind the front end of the crop divider 62 disposed on the front end side of the pre-treatment frame 61, and the sub-reaping apparatus 7 is disposed in a posture in which the cutting action line CL is orthogonal or substantially orthogonal to the upper edge of the crop dividing action surface of the crop divider 62 in a side view of the main reaping apparatus. The cutting action line CL is a line segment connecting the average positions of the cutting action parts c when the blades of the pair of left and right cutter bodies 71, 71 intersect with each other to cut the target stem as shown in fig. 5.

The relative posture of the sub-reaping apparatus 7 with respect to the crop divider 62 is preferably a posture in which the cutting action line CL is orthogonal or substantially orthogonal as described above, but is not necessarily limited to the range of orthogonal or substantially orthogonal, and may be appropriately changed depending on various conditions, and for example, the blade front side may be configured to form an angle of about 80 to 120 degrees with the upper edge of the crop divider 62.

The sub-harvesting device 7 is disposed such that the cutting line CL is orthogonal or substantially orthogonal to the stalk feeding direction of the drum raking device 64 in a side view of the machine body. At this time, as shown in fig. 16, the center of rotation of the roller raking device 64 is preferably located at a position aligned with the cutting action portion of the sub-harvesting device 7 in a side view.

In this state, the stem feeding direction of the drum-type raking device 64 and the intersection angle of the upper edge of the crop divider 62 are both substantially orthogonal to the cutting action line CL of the sub-reaping apparatus 7, and therefore, the cutting action of the sub-reaping apparatus 7 on the tangled stem portions is easily and satisfactorily achieved.

The above-mentioned relationship between the pickup device 5 and the roller raking device 64 is, as shown in fig. 5, arranged in such a manner that the roller raking device 64 rakes the stalks from the front of the front end of the pickup device 5. With this configuration, the raking action of the drum-type raking device 64 acts on the transversely fallen stalks before the picking operation of the picking device 5 is started, and therefore, the picking operation can be performed easily and efficiently.

Further, the left-right cutting portion of the sub-reaping apparatus 7 is provided at a position slightly offset to the outside of the lateral direction of the machine body from the center of the grain division of the left-side grain divider 62, and when the stalks in a state of being tangled with the ear tips are divided, the stalks reaching the cutting portion without being tangled are cut at a position slightly outside of the center of the grain division.

Therefore, when the outside stalks on the non-harvest side are cut and the stalks within the harvest width are harvested by the main harvesting device 63, the stalks in the non-disentangled state are also subjected to the action of the roller raking device 64, the conveying screw conveyor 65, and the like, so that the stalks are less likely to fall off from the pre-harvest treatment device 6 and are easily conveyed to the feeder 60 side.

[ further embodiment 1 ] of embodiment 1

Fig. 17 and 18 show another embodiment of the sub-harvesting device 7.

The cutter bodies 71, 71 of the sub-reaping apparatus 7 are constituted by a long pusher-type cutter constituted by a fixed blade 71A fixed to the mounting frame 70 and a movable blade 71B provided to be slidable relative to the fixed blade 71A. The driving structure for driving the sub-mowing apparatus 7 is driven by a driving force output from a driving shaft 68 of a conveying auger 65 of the pre-mowing treatment apparatus 6 via a vertical mowing linkage (an example of a power transmission mechanism for transmitting the driving force to the sub-mowing apparatus) 8.

The fixed blade 71A and the movable blade 71B are mounted on a mounting frame 70, and the mounting frame 70 pivotally supports the lower end side thereof on the left pretreatment frame 61 of the pre-harvest treatment apparatus 6 so as to be swingable about a horizontal pivot shaft 76. As shown in fig. 17 and 18, a crank-like rotation member 77 with a pulley 77a is externally fitted to a pivot shaft 76 fixed in a state of penetrating through the left pretreatment frame 61 and the mounting frame 70, and a drive lever mounting shaft 77b of the crank-like rotation member 77 is provided in a state of being eccentric with respect to the pivot shaft 76.

The blade drive lever 78 is relatively rotatably fitted around the drive lever mounting shaft 77B, so that the blade drive lever 78 is rotationally driven at the end on the drive lever mounting shaft 77B side and the opposite end is connected to the movable blade 71B via the connecting shaft 79, and by this mechanism, the rotational motion of the crank-like rotary member 77 is converted into reciprocating motion, and the movable blade 71B is reciprocated along the mounting frame 70.

The fixed blade 71A is fixed to the mounting frame 70, and the longitudinal intermediate portion of the movable blade 71B is connected to the blade drive lever 78 via the connecting shaft 79.

Therefore, when the rotational power is transmitted to the pulley 77a of the crank-like rotation member 77, the crank-like rotation member 77 rotates about the axial center P1 of the pivot shaft 76, and the axial center P2 of the drive lever attachment shaft 77b is driven to rotate about the axial center P1. Accordingly, the shaft center P3 of the connecting shaft 79 on the other end side of the blade drive lever 78 reciprocates in the longitudinal direction of the mounting frame 70, and the movable blade 71B reciprocates.

As shown in fig. 17 and 18, the vertical harvesting linkage 8 for transmitting power from the drive shaft 68 of the conveying screw conveyor 65 of the pre-harvest treatment apparatus 6 to the crank-like rotary member 77 is driven by a drive chain 88 and a drive belt 89, the drive chain 88 is wound around a drive sprocket 68a provided on the drive shaft 68 of the conveying screw conveyor 65 and a relay sprocket 81c formed on a transverse relay shaft 81 fixed to a transverse wall portion of the left pretreatment frame 61, and the drive belt 89 is stretched between a relay pulley 81d provided on the relay shaft 81 and a pulley 77a of the crank-like rotary member 77. A longitudinal cutter clutch mechanism 85 including a tension pulley 85a and a spring 85b elastically biasing the tension pulley 85a toward a clutch engagement side is provided at an intermediate position of the transmission belt 89, and the longitudinal cutter clutch mechanism 85 constitutes a clutch device capable of switching between a clutch engagement state and a clutch disengagement state by turning on or off power alone by operation of an operation lever 86 for operating the spring 85b toward a release side.

[ claim 1 ] Another embodiment 2

In the sub-harvesting device 7 described in the preferred embodiment, the cutter bodies 71, 71 may be constituted by a combination of the fixed blade 71A and the movable blade 71B. In this case, the output link 84 may be connected only to one end of the swing member 82 externally fitted to the relay shaft 81, and the reciprocating swing motion of the swing member 82 may be transmitted as the reciprocating motion of the movable blade 71B, so that the fixed blade 71A may be fixed to the mounting frame 70.

[ claim 1 ] still another embodiment 3 of the present invention

The number of the pickup devices 5 to be used mounted on the main harvesting device 63 can be appropriately selected within the range of the harvesting width based on the object to be picked up and various conditions of use. Further, the structure for attaching and detaching the pickup devices 5 one by one is not limited, and a plurality of pickup devices 5 may be integrated and attached and detached.

[ claim 1 ] still another embodiment 4 of the present invention

The mounting position of the pickup device 5 is preferably mounted below the fixed blade 63A of the main harvesting device 63 as described in the best mode, but is not necessarily so and may be mounted on a fixed portion such as the pretreatment frame 61. The mounting position is not limited to the lower side, and may be fixed to the upper side.

[ claim 1 ] still another embodiment 5 of the present invention

The sub-harvesting device 7 is not limited to the one used for harvesting rapeseed, and may be applied to various stalks that are to be harvested at the ear head side.

[ 2 nd embodiment ]

Next, a2 nd embodiment of a general-type combine harvester according to the present invention will be described with reference to fig. 19 to 40.

[ integral Structure ]

Fig. 19 to 21 show an entire side surface and an entire plan view of a general combine harvester according to the present invention. The general type combine harvester is configured to be suitable for harvesting crops such as rapeseeds with strong entanglement between the crops and for performing the standard of recovering and threshing the crops which are harvested in advance and placed on the ground, and a body frame 10 is mounted on a pair of left and right crawler traveling devices 11 to configure a bicycle body 1. The bicycle body 1 is provided with a riding driver part 2 equipped with a driver seat 20, a prime mover part 3 equipped with an engine 30 located below the driver seat 20, a threshing device 4 for threshing and sorting crops, and a bagging device 13 for bagging and recovering the threshed and sorted crop particles.

The feeder 60 of the pre-harvest treatment device 6 is connected to the front end of the bicycle body 1 in such a manner that the feeder 60 can freely swing up and down around the horizontal axis x at the rear end thereof, and a general combine harvester is constituted by a combination of these devices, which supplies the whole crop harvested by the pre-harvest treatment device 6 to the threshing device 4 through the feeder 60 to perform threshing.

[ threshing system structure ]

The threshing device 4 performs threshing processing on supplied crops by using an axial flow type threshing cylinder 40 rotating around the axis of the machine body in the front-rear direction, performs sorting processing on threshed processing objects, sorts the threshed processing objects into threshed grains and discharge stalks, raises the threshed grains to be supplied to the storage bin 14 of the bagging device 13, and discharges the threshed discharge stalks and the like to the rear of the self-propelled machine body 1. In fig. 20, reference numeral 15 denotes an auxiliary plate connected to the lateral outer end of the machine body frame 10, and is supported so as to be swingably switched between a use posture in which the auxiliary plate horizontally extends outward in the lateral direction of the machine body and a storage posture in which the auxiliary plate is substantially vertically erected.

[ Structure of reaping System ]

The pre-harvest treatment apparatus 6 is provided with a pretreatment frame 61 including a deck 61A and vertical wall-shaped side walls 61D continuous with left and right ends of the deck 61A, a pair of left and right crop dividers 62 are mounted on front portions of the side walls 61D, a pusher-type main harvesting apparatus 63 is transversely provided between lower portions of the left and right side walls 61D, and a sub-harvesting apparatus 7 described later is provided in a vertical posture on a transversely outer side of a front portion of the side wall 61D on the left side of the machine body on the non-harvesting side.

The main harvesting unit 63 is a pusher-type harvesting unit in which a fixed blade 63A connected and fixed to a cutter support frame 61B extending in the transverse direction and a movable blade 63B capable of reciprocating in the left and right directions relative to the fixed blade 63A are combined.

A roller raking device 64 is arranged above the main harvesting device 63 and rotates the upper end side of the planted crop to rake the rear side of the pretreatment frame 61, a conveying screw conveyor 65 is transversely arranged above the rear part of the platform 61A in the pretreatment frame 61, the crop harvested by the main harvesting device 63 and raked on the platform 61A is conveyed to the front side of the feeder 60 by the conveying screw conveyor 65, and the crop positioned at the front side of the feeder 60 is fed to the feeder 60 by a raking rod 65a which is provided in the conveying screw conveyor 65 and can freely and integrally rotate along with the conveying screw conveyor 65.

The feeder 60 is formed in a square tubular shape with open front and rear ends, and the crop fed from the conveying screw conveyor 65 is raked and raised to the rear end outlet side of the feeder 60 by a chain feeder conveyor 60a provided inside the feeder 60, and the whole crop is fed from the rear end outlet of the feeder 60 to the threshing device 4. The feeder 60 is supported so that the front end side can freely move up and down around the horizontal axis x by the operation of the lifting cylinder 12 installed between the feeder 60 and the machine body frame 10, and the working height of the pre-harvest treatment device 6 can be arbitrarily changed by moving the feeder 60 up and down.

The drum-type raking device 64 has a known structure in which the raking teeth 64b for raking crops are rotatably supported at the respective top portions of a rotating frame 64h formed into a regular pentagon in a side view, and the rotating frame 64h is driven to rotate in the raking direction by a driving force input from a harvesting input shaft 66 to be described later via a belt transmission mechanism 64c, and the teeth 64b are driven to rotate in the opposite direction in synchronization therewith, so that the raking device operates on an arc-shaped raking movement locus T from the front side to the rear side of the machine body in a state in which the teeth 64b are always directed downward.

As shown in fig. 33, the drum raking device 64 is supported at the front of a drum support rod 64d, the drum support rod 64d is supported at the upper rear end of the pretreatment frame 61 so as to be vertically swingable about a lateral fulcrum y, a drum drive shaft 64a is supported by a saddle 64e slidable in the longitudinal direction of the drum support rod 64d and movable in the front-rear direction, and the rotation axial center position z of the drum drive shaft 64a is changed in the front-rear direction by performing a position changing operation of the saddle 64 e. The position of the saddle 64e can be fixed to the roller support rod 64d by inserting the stopper pin 64g into any one of a pair of front and rear stopper holes 64f that penetrate the roller support rod 64 d. A hydraulic cylinder 64i is provided between the roller support rod 64d and a fixed position on the side of the pretreatment frame 61, and the cylinder 64i is extended and contracted to arbitrarily raise and lower the roller type raking device 64 and change the raking height. A stopper bolt 64j that abuts and supports the roller support rod 64d to limit the lowering limit of the roller support rod 64d is provided on the upper surface of the pretreatment frame 61, and the stopper bolt 64j is adjusted by a screw to finely adjust the lowering limit height of the roller raking device 64.

In order to move the drum raking device 64 forward as the rotational center position z moves downward, the up-down movement locus S of the rotational center position z of the drum driving shaft 64a is set to: the rear side of the vertically arranged sub-reaping apparatus 7 is arranged to be inclined with respect to the sub-reaping apparatus 7 in side view, and when the roller raking device 64 is positioned at the descending limit, the rotation center position z substantially overlaps with the sub-reaping apparatus 7 in side view, and when the roller raking device 64 is positioned at the ascending limit, the rotation center position z is positioned higher than the sub-reaping apparatus 7 in side view.

The height of the roller raking device 64 is changed according to harvesting conditions such as crop types, crop straw lengths, and crop lodging conditions, and the roller raking device 64 is moved to the lower front side as the crop lodging degree increases, thereby raking the crop as early as possible.

As shown in fig. 33, when the drum-type raking device 64 is lowered greatly, the raking movement locus t (D) of the teeth 64b overlaps largely with the side wall 61D of the pretreatment frame 61 in a side view of the machine body, and the crop fallen down to the vicinity of the ground can be raked without leaking between the left and right side walls 61D. The raking movement trajectory t (u) of the tine 64b when the drum-type raking device 64 is raised is separated upward with respect to the side wall 61D in a side view of the machine body, and the high portion of the standing crop can be raked rearward and guided to the main harvesting device 63 to be cut, and smoothly fed to the platform 61A.

When the drum raking device 64 is raised greatly, the space between the upper surface of the side wall 61D of the pretreatment frame 61 and the drum support rod 64D is greatly opened, and the driver can easily see the non-harvesting side through the space between the upper surface of the side wall 61D and the drum support rod 64D.

A pair of left and right sliders 56 are provided in the vicinity of both left and right ends of the lower side of the platform 61A in a protruding manner, and when the pre-harvest treatment device 6 is lowered, the sliders 56 are grounded to restrict the lowering of the pre-harvest treatment device 6, thereby preventing the front end of the pre-harvest treatment device 6 from protruding into the ground. The slide body 56 is formed in a horizontally long hollow box shape having a bottom surface, front and rear surfaces, and left and right side surfaces, and can reliably and stably support the weight of the lowered pre-harvest treatment device 6 and the feeder 60 in a ground contact manner with a large ground contact area of the left and right slide bodies 56, and even if the machine body is manipulated in a state where the slide body 56 is grounded and the pre-harvest treatment device 6 is pulled in the horizontal direction, soil does not enter into the slide body 56 and adheres to and stays in the slide body 56.

As shown in fig. 34, the front end of the platform 61A is disposed close to the rear end of the main harvesting device 63, and a guide frame 61e that is raised in a peak shape at the front end of the platform 61A is provided along the entire width of the platform 61A, thereby suppressing the forward overflow of the harvested crop guided to the platform 61A.

On the rear side of the roller raking device 64, a scattering prevention plate 9 is provided so as to face rearward and upward near the inlet of the feeder 60 above the conveying screw conveyor 65. As shown in fig. 29, the anti-scattering plate 9 is formed in a channel shape by a rear surface portion 90 in a backward inclined posture and side surface portions 91 on both left and right sides. The channel-like shape formed by the rear surface portion 90 and the left and right side surface portions 91 is constituted by a frame 92 and a rubber blade 93 laid inside the frame 92, and the frame 92 is constituted by a channel-like upper edge frame portion along the upper edge portions of the rear surface portion 90 and the side surface portions 91, and a vertically oriented support plate portion supporting the upper edge portion.

The scattering prevention plate 9 is improved so that the field of view when viewed from the rear upper side of the scattering prevention plate 9 is not narrowed as much as possible when the riding operator 2 performs the driving operation or the front side is viewed, and the scattering prevention plate 9 is configured to catch the rapeseed or the like jumped up from the front side and to flow down to the front side and return to the feeding path of the feeder 60.

The scatter prevention plate 9 is effective for preventing the scattering of the harvested material during the picking-up work for picking up the harvested material placed on the ground, but in the normal harvesting work, the scatter prevention plate 9 is not required to be used in many cases, and therefore, the scatter prevention plate 9 is configured to be detachable from the pretreatment frame 61 so as to be detachable.

[ Structure of pickup apparatus ]

As shown in fig. 27 to 29, the pickup device 5 is composed of a round bar-shaped elevating section 50, a side-view L-shaped mounting plate 51 welded and fixed to a lower portion of a rear end side of the elevating section 50, and a side-view triangular reinforcing plate member 52 welded and fixed between a lower edge side of the elevating section 50 and a front surface side of the mounting member 51, and the pickup device 5 is fixed to a blade support frame 61B attached to a pretreatment frame 61 by inserting a fixing bolt 53 into a mounting hole 51a formed in a rear end side of the mounting member 51 and composed of a long hole.

The pickup devices 5 are provided at a plurality of positions within the harvesting width of the main harvesting device 63, and the pickup devices 5 pick up (pick up) the crop previously harvested and placed on the ground by submerging the tip end of the elevating portion 50 under the crop, and the pickup devices 5 are provided within the harvesting width of the main harvesting device 63 as described below.

The main harvesting unit 63 is constituted by a combination of a fixed blade 63A fixed to the blade support frame 61B and a movable blade 63B slidable relative to the fixed blade 63A, and the pickup unit 5 is provided along an extension line of one of the fixed blades 63A. A punched hole 54 portion into which the tip portion of the fixed blade 63A is inserted is formed in the front side plate portion 51A of the mounting member 51 at a position opposed to the fixed blade 63A, and a notch 55 having a shape similar to that of the tip portion of the fixed blade 63A is formed in the reinforcing member 52 at a position opposed to the fixed blade 63A.

Therefore, when the fixing bolt 53 is inserted into the mounting hole 51a of the mounting member 51 and fastened, the upper portion of the notch 55 of the reinforcing member 52 is positioned to extend to the upper edge of the distal end portion of the fixed blade 63A, and the pickup device 5 is supported by the upper portion and the fixing portion of the fixing bolt 53 in a state where the pickup device 5 is positioned on the extension line of the fixed blade 63A in a plan view. At this time, the rear end side of the lifting unit 50 is located at a position away from the upper side of the main harvesting unit 63. Further, since the movable blade 63B of the main harvesting unit 63 is formed in the guide groove 63Aa formed in the fixed blade 63A so as not to extend beyond the vertically oriented front side plate portion of the mounting member 51 in which the punched hole 54 is formed, the movable blade can be operated without being disturbed by the presence of the pickup unit 5, and the harvesting operation of the main harvesting unit 63 can be performed simultaneously even in the picking operation state in which the pickup unit 5 is mounted. When the pickup device 5 is not necessary, the pickup device 5 may be detached from the main harvesting device 63 by detaching the fixing bolt 53, and the fixing bolt 53 may be returned to the original state.

The height of the tip end of the lifting portion 50 is set so that the tip end of the pickup 5 is positioned near the ground in a state where the pre-harvest processing device 6 is lowered to the state where the slider 56 is grounded, and thus, even if the pre-harvest processing device 6 is inadvertently lowered, the tip end of the pickup 5 is prevented from being damaged by being strongly collided with the ground.

[ Structure of Transmission System ]

Fig. 22 shows a power transmission system for transmitting the driving force of engine 30 to crawler belt traveling device 11 and body frame 10. As shown in fig. 22, the transmission mechanism that transmits power to the crawler belt traveling apparatus 11 transmits a part of power output from the output shaft 30a of the engine 30 to the input shaft 22a of the main transmission apparatus 22 constituted by a hydrostatic continuously variable transmission (HST) via the belt transmission mechanism 21, inputs the transmission power output from the output shaft 22b of the main transmission apparatus 22 to the transmission case 23, and further performs multi-stage gear shifting by a sub-transmission mechanism, not shown, in the transmission case 23 to transmit the transmission power to the pair of left and right crawler belt traveling apparatuses 11, 11.

The main transmission 22 is composed of a variable displacement hydraulic pump 22P having the input shaft 22a as a pump shaft, and a constant displacement hydraulic motor 22M that is driven in a forward and reverse continuously variable manner by pressure oil from the hydraulic pump 22P, and can travel forward and backward at a continuously variable speed.

The transmission mechanism for transmitting power to the threshing device 4 transmits a part of the power output from the output shaft 30a of the engine 30 to one end side of the fan drive shaft 41 of the threshing device 4 via the belt transmission mechanism 31, transmits the power output from the other end side of the fan drive shaft 41 to the primary screw conveyor 43 and the secondary screw conveyor 44 of the threshing device 4 via the belt transmission mechanism 42, and transmits the power output from the power output shaft 45 provided on the belt transmission mechanism 42 to the sorting device drive shaft 47 of the threshing device 4 via the belt transmission mechanism 46.

The transmission mechanism that transmits power output from the output shaft 30a of the engine 30 to the pre-harvest processing device 6 transmits power to the box input shaft 34 of the transmission box 33 via the belt transmission mechanism 31, the fan drive shaft 41, and the belt transmission mechanism 32 provided on the other end side of the fan drive shaft 41, transmits part of the power of the box input shaft 34 from the threshing cylinder output shaft 35 of the transmission box 33 to the threshing cylinder 40, and transmits part of the power of the box input shaft 34 to the harvesting input shaft 66 of the pre-harvest processing device 6 via the forward rotation clutch 37 or via the harvesting output shaft 36 and the reverse rotation clutch 38 of the transmission box 33.

The transmission case 33 houses a bevel gear mechanism 48, and the bevel gear mechanism 48 has a bevel gear 48a integrally rotatably provided at an end portion of the case input shaft 34. The bevel gear mechanism 48 includes, in addition to the bevel gear 48a, a bevel gear 48b provided at an end of the harvesting output shaft 36 so as to be integrally rotatable, and a bevel gear 48c provided at the threshing cylinder output shaft 35 so as to be integrally rotatable in a state of being engaged with the bevel gears 48a, 48 b. The bevel gear mechanism 48 is capable of interlocking the box input shaft 34 in the transverse direction of the traveling body with the threshing cylinder output shaft 35 in the front-rear direction of the traveling body, and interlocking the box input shaft 34 with the harvesting output shaft 36 in a state where the rotation direction of the box input shaft 34 is opposite to the rotation direction of the harvesting output shaft 36.

As shown in fig. 22, the forward rotation clutch 37 is a belt tension clutch that switches the transmission belt 37a wound around the one end sides of the box input shaft 34 and the reaping input shaft 66 to a tensioned state and a relaxed state by the tension pulley body 37b, and switches the transmission belt to an engaged state and a disengaged state. The forward rotation clutch 37 is switched to the engaged state, and transmits the driving force of the box input shaft 34 to the harvesting input shaft 66 as a driving force for driving the pre-harvesting treatment device 6 in the forward rotation direction.

As shown in fig. 22, the reverse clutch 38 is a belt tension clutch that switches the transmission belt 38a wound around the harvesting output shaft 36 and the other end side of the harvesting input shaft 66 between a tensioned state and a relaxed state by means of the tension pulley body 38b, and switches between an engaged state and a disengaged state. The reverse rotation clutch 38 is switched to the engaged state, and transmits the driving force of the harvesting output shaft 36 to the harvesting input shaft 66 as a driving force for driving the pre-harvesting treatment device 6 in the reverse rotation direction.

As shown in fig. 22, the harvest input shaft 66 becomes a conveyor drive shaft that drives the feeder conveyor 60 a. The harvesting input shaft 66 is linked with a drive shaft 67 of the main harvesting unit 63 via a transmission chain 66 a. The drive shaft 67 and the drive shaft 68 of the conveying screw 65 are linked by a transmission chain 66 b. The drive shaft 68 of the conveying screw conveyor 65 and the drive shaft 64a of the roller raking device 64 are interlocked with each other by an interlocking mechanism using a transmission chain 66c and a transmission belt 66 d.

The power from the drive shaft 67 is input to a well-known motion direction conversion mechanism 69 attached to the drive shaft 67, and the rotational motion of the drive shaft 67 is converted into the reciprocating rotational motion of the transmission shaft 67a by the motion direction conversion mechanism 69. The cutter of the main harvesting unit 63 is linearly driven in a reciprocating manner by the reciprocating rotation of the transmission shaft 67 a.

When the driving force in the normal rotation direction is transmitted to the harvesting input shaft 66, the feeder conveyor 60a, the conveying screw conveyor 65, the main harvesting unit 63, and the drum raking device 64 of the pre-harvesting treatment device 6 are driven in the normal rotation direction in which the normal pretreatment work and conveying work are performed. When the driving force in the reverse direction is transmitted to the harvesting input shaft 66, the feeder conveyor 60a, the conveying screw conveyor 65, the main harvesting unit 63, and the drum raking device 64 of the pre-harvesting treatment device 6 are driven in the opposite rotational direction to the normal rotational direction for work.

The power transmission to the sub-harvesting unit 7 is a reciprocating motion transmitted from a drive system of the main harvesting unit 63 via a vertical harvesting linkage (an example of a power transmission mechanism that transmits a driving force to the sub-harvesting unit) 8, and the vertical harvesting linkage 8 will be described later together with the structure of the sub-harvesting unit 7.

[ Structure of auxiliary reaping apparatus ]

As shown in fig. 21 to 23, a sub-harvesting unit 7 for cutting a crop in a vertically standing posture is disposed at a non-harvesting position in a harvesting region of the main harvesting unit 63 at a lateral end portion on a non-harvesting side (left side) of the pre-harvesting treatment unit 6.

As shown in fig. 23 to 26, the sub-reaping apparatus 7 is constituted by a pair of left and right cutter bodies 71, the pair of left and right cutter bodies 71 are constituted by long pusher-type cutters configured to be relatively slidable at positions on the front surface side of the mounting frame 70, and the pair of left and right cutter bodies 71 are driven by the driving force of the main reaping apparatus 63 via a vertical reaping linkage mechanism 8 to be described later.

The pair of left and right cutter bodies 71 are fixed at their lower ends to the left pretreatment frame 61 of the pretreatment device 6, and at their upper ends to the mounting frame 70 supported by the support rod 72.

A plate-shaped guide plate 74 protruding forward is provided protruding from the front surface of the square cylindrical frame body 73 of the mounting frame 70, and the pair of left and right cutting blades 71 and the blade holding member 75 holding the pair of left and right cutting blades 71 from both left and right sides are mounted so as to embrace the guide plate 74 from both sides, and the pair of left and right cutting blades 71 can be reciprocated up and down along the guide plate 74.

The pair of left and right cutting blades 71 configured as described above are connected to be driven in conjunction with the operation of the main harvesting unit 63 via the vertical harvesting linkage 8. As shown in fig. 22 to 24, the vertical harvesting linkage 8 is composed of an input linkage 80 which is linked with the movable knife 63B of the main harvesting device 63 and guides the movement of the movable knife 63B in the reciprocating sliding direction, a relay shaft 81 which integrally has an arm 81a connected to the input linkage 80 and faces in the front-rear direction, a swing member 82 which is externally fitted to the relay shaft 81, an output linkage 84 which transmits the reciprocating swing motion of the swing member 82 as the vertical reciprocating motion of the pair of left and right cutting blades 71, and a vertical cutting blade clutch 85 which can be switched between a state in which the reciprocating rotational motion of the relay shaft 81 caused by the swing of the arm 81a is transmitted as the swing motion of the swing member 82 and a state in which the transmission is cut off.

As shown in fig. 30, the slitting blade clutch mechanism 85 includes an engaging projection 81b integrally projecting from the relay shaft 85, an engaging hole 83a formed in the hub member 83 of the swing member 82 so as to be engageable with and disengageable from the engaging projection 81b, and an operating lever 86 for performing an engaging and disengaging operation of the engaging projection 81b and the engaging hole 83a by changing the position of the hub member 83 in the axial direction of the relay shaft 81.

The hub member 83 is always biased toward the clutch engagement side, i.e., the side where the engagement protrusion 81b and the engagement hole 83a are engaged, by a biasing spring 87 disposed on the relay shaft 81. In a state where the clutch release operation is performed, that is, the engagement between the engagement projection 81b and the engagement hole 83a is released, as shown in fig. 30, the operation lever 86 can be fixed to the locking portion 61c formed in a part of the pretreatment frame 61 in a hooked state.

With the above-described configuration, the sub-harvester 7 transmits the reciprocating linear motion of the main harvester 63 to the input link 80 in accordance with the operation of the main harvester 63, and the reciprocating linear motion of the input link 80 is converted into the swinging motion of the arm 81a, thereby causing the relay shaft 81 itself to perform reciprocating rotational motion about the axial center. The reciprocating rotational motion of the relay shaft 81 is converted into the oscillating motion of the oscillating member 82 and the reciprocating linear motion of the output link 84 via the longitudinal cutter clutch mechanism 85, and the pair of cutter bodies 71 reciprocate in opposite directions to cut the target crop.

If the drive of the sub-mowing apparatus 7 is required, the vertical cutter clutch mechanism 85 is put into an engaged state, and if the drive of the sub-mowing apparatus 7 is not required, the drive of the sub-mowing apparatus 7 can be stopped alone by driving only the main mowing apparatus 63.

The sub-reaping apparatus 7 is disposed in front of the main reaping apparatus 63 at the crop cutting position and behind the front end of the crop divider 62 disposed on the front end side of the pretreatment frame 61, and the sub-reaping apparatus 7 is disposed in a posture in which the sub-reaping apparatus 7 is orthogonal or substantially orthogonal to the upper edge of the crop dividing action surface of the crop divider 62 in a side view of the main reaping apparatus.

As shown in fig. 21 and 35, the left divider 62 is located at the laterally outer side of the machine body at the left lateral end of the drum-type raking device 63, the cutting position in the left-right direction of the sub-harvesting device 7 is set at a position shifted to the laterally outer side of the machine body from the dividing center c of the left divider 62, and when crop with entangled ears in the head side is divided, the non-harvested crop reaching the cutting position without being entangled is cut at a position slightly outside the dividing center c. Therefore, when the outside non-harvest side crop is cut and the main harvesting device 63 harvests the crop within the harvesting width, the crop not disentangled is also acted by the roller raking device 64, the conveying screw conveyor 65, and the like, so that the possibility of falling off from the pre-harvest treatment device 6 is reduced, and the crop is easily conveyed to the feeder 60 side.

As shown in fig. 23 and 24, the output link rod 84 of the cutter body 71 inside the machine body of the vertical harvesting link mechanism 8 is vertically driven to protrude upward from the grain divider 62, and a side cover 95 covering a range from a position where the output link rod 84 is disposed to the rear rod 72 from the inside of the machine body is fixedly attached to a fixed portion such as the attachment frame 70, the rod 72, and the pretreatment frame 61, so that the crop is smoothly guided rearward without being entangled with the output link rod 84. The side cover 95 covers the output link rod 84 of the cutter body 71 outside the upper and lower driving bodies from the outside of the machine body, thereby preventing the unharvested crop from being pulled out together with the output link rod 84 or from being retained and tangled to adversely affect the operation of the sub-harvesting device 7.

Fig. 36 shows a state when rapeseeds in a good standing state are harvested, in which the pre-harvest treatment device 6 is slightly lifted, and a high part with a large amount of grains is harvested efficiently, and the drum-type raking device 64 is adjusted to a height suitable for the situation of long stalks and lodging.

[ Specification-changing Structure of Pre-harvesting treatment apparatus ]

Fig. 37 is a plan view of the entire conventional combine harvester without the pickup 5. Hereinafter, a specification changing structure of the pre-harvest treatment device will be described based on the combine harvester in this state.

As shown in fig. 38 to 40, the pre-harvest treatment apparatus 6 is divided into a front unit Uf and a rear unit Ur in front and rear by a stepped dividing line.

The rear unit Ur is connected to and supported by the front end of the feeder 60, and the platform 61A, the rear main portion of the side wall 61D, the roller raking device 64, and the conveying screw conveyor 65 are attached to the rear unit Ur.

The front unit Uf is provided with a coarse grain unit Uf1 and a rice and wheat unit Uf2, and is replaceable and bolted to the rear unit Ur.

As shown in fig. 38, the coarse cereal unit Uf1 is attached with the front end side portion 61Af of the platform 61A, the above-described main harvesting device 63, the sub-harvesting device 7 (not shown in fig. 38), the front end side portion 61Df of the side wall 61D, and the coarse cereal divider 62 whose end is rounded in side view. As shown in fig. 40, a rice and wheat divider 62 having a front end side portion 61Df of a side wall 61D and a tip end in side view is attached to the rice and wheat unit Uf 2. As shown in fig. 39, when the rice/wheat unit Uf2 is connected to the rear unit Ur, the main header 63 is connected to the front end of the platform 61A attached to the rear unit Ur.

With the above configuration, in a state where the rice/wheat unit Uf2 is connected to the rear unit Ur, the distance L2 between the main harvesting device 63 and the conveying screw conveyor 65 is smaller than the distance L1 between the main harvesting device 63 and the conveying screw conveyor 65 in a state where the coarse cereal unit Uf1 is connected to the rear unit Ur. As a result, the crop harvested by the main harvesting unit 63 is received by the platform 61A that is long in the front-rear direction in a state where the coarse cereal unit Uf1 is connected, and the crop having a certain volume can be smoothly guided to the conveying auger 65. In the state where the rice/wheat unit Uf2 is connected, the conveying action of the conveying screw conveyor 65 can be directly exerted on the crop harvested by the main harvesting device 63 without being left sideways, and the crop can be smoothly fed to the feeder 60 without being accumulated on the surface 61A.

[ Another mode of the embodiment 2 ]

The present invention can be implemented in the following forms.

(1) In the above embodiment, the case where the main harvesting unit 63 is attached to the front end of the rear unit Ur when the coarse cereal unit Uf1 is used as the front unit Uf is exemplified, but the main harvesting unit 63 may be attached to the rear end of the coarse cereal unit Uf 1.

(2) If the sub-harvesters 7 for cutting and planting the crop in a vertical posture in the vertical direction are provided on both the left and right sides of the pre-harvest treatment device 6, even if the crop to be harvested and the left and right non-harvested crops are strongly entangled with each other during the middle harvest operation in which the left and right sides of the machine body are both left and right as the non-harvested regions and the harvesting is advanced, the entanglement of the crop to be harvested and the left and right non-harvested crops can be cut and separated by the left and right sub-harvesters 7, and smooth harvesting and traveling can be.

(3) The present invention may be implemented in a pusher-type harvesting apparatus in which one of the pair of cutting blades 71 of the sub-harvesting apparatus 7 is a fixed blade and the other is a movable blade, or in a chain saw-type harvesting apparatus in which a chain having the cutting blades is driven to rotate in the longitudinal direction.

Finally, corresponding reference numerals in the figures have been inserted in the claims for easy reference to the figures, but this does not mean that the scope of protection of the invention is limited to the illustrated embodiments.

Claims (18)

1. A common combine harvester is provided with a main harvesting device (63), a roller type raking device (64), a threshing device (4) and a nearside divider (62), wherein the main harvesting device (63) harvests and plants stalks in a horizontal posture, the roller type raking device (64) rotates raking teeth (64 b) at the upper side position of the main harvesting device (63) to rake and gather the planted stalks as a harvesting object, the threshing device (4) puts the stalks harvested by the main harvesting device (63) into a processing chamber integrally for threshing and sorting, the nearside divider (62) is arranged at the position closer to the front side than the main harvesting device (63) at the end part of the main harvesting device (63) in the harvesting direction,

it is characterized in that the preparation method is characterized in that,

a pusher-type sub-harvesting device (7), wherein the sub-harvesting device (7) is arranged at the lateral side end part of the harvesting action area of the main harvesting device (63) and takes a standing posture along the vertical direction of a cutting action line (CL) connecting cutting action parts of a cutting knife,

a pretreatment frame (61), the divider (62) is supported at the front end of the pretreatment frame (61), the roller type raking device (64) is supported on the pretreatment frame (61) in a manner of swinging up and down,

the sub-harvesting device (7) is supported by the pre-treatment frame (61) at the rear side of the divider (62),

the sub-harvesting device (7) is configured to be in a forward tilting posture in a descending harvesting operation state in which a platform (61A) located at the lower part of the pretreatment frame (61) descends to the vicinity of the ground.

2. A conventional combine harvester according to claim 1,

when the drum-type raking device (64) is positioned at the descending limit of the vertical swing, the raking movement track (T (d)) of the auxiliary harvesting device (7) and the raking teeth (64 b) are overlapped in side view, and the front end of the raking movement track (T (d)) is positioned at a position more ahead than the auxiliary harvesting device (7).

3. A general type combine harvester according to claim 1,

the auxiliary harvesting device (7) is arranged at the position adjacent to the lateral outer side of the machine body of the pretreatment frame (61) in a plan view.

4. A general type combine harvester according to claim 1,

the sub-harvesting device (7) protrudes above the pre-treatment frame (61) in side view,

the upper front end of the sub-harvesting device (7) is located forward of the main harvesting device (63) and above the crop divider (62).

5. A common combine harvester is provided with a main harvesting device (63), a roller type raking device (64) and a threshing device (4), wherein the main harvesting device (63) harvests and plants crops in a horizontal posture along the horizontal direction, the roller type raking device (64) enables raking teeth (64 b) to rotate to rake and gather the planted crops serving as a harvesting object at the position above the main harvesting device (63), the threshing device (4) puts the whole crops harvested by the main harvesting device (63) into threshing and sorting treatment,

it is characterized in that the preparation method is characterized in that,

an auxiliary harvesting device (7) which cuts the planted crops in a vertical posture along the vertical direction is arranged at the position of the transverse side end part of the harvesting action area of the main harvesting device (63),

a pre-treatment frame (61) for supporting the auxiliary harvesting device (7),

a mounting frame (70) is provided, the mounting frame (70) is arranged along the auxiliary harvesting device (7) in a state of extending from the upper end to the lower end of the auxiliary harvesting device (7), and supports the rear side of the auxiliary harvesting device (7),

a support rod (72) is arranged, the support rod (72) is arranged on the rear side of the mounting frame (70) and is distributed on the upper end of the mounting frame (70) and the side part of the pretreatment frame (61),

a side cover (95) is provided, and the side cover (95) closes a space between the mounting frame (70) and the support rod (72).

6. A general type combine harvester according to claim 5,

the side cover (95) is fixed to the mounting frame (70) and the support rod (72).

7. A common combine harvester is provided with a main harvesting device (63), a roller type raking device (64) and a threshing device (4), wherein the main harvesting device (63) harvests and plants crops in a horizontal posture along the horizontal direction, the roller type raking device (64) enables raking teeth (64 b) to rotate to rake and gather the planted crops serving as a harvesting object at the position above the main harvesting device (63), the threshing device (4) puts the whole crops harvested by the main harvesting device (63) into threshing and sorting treatment,

it is characterized in that the preparation method is characterized in that,

an auxiliary harvesting device (7) which cuts the planted crops in a vertical posture along the vertical direction is arranged at the position of the transverse side end part of the harvesting action area of the main harvesting device (63),

the side cover (95) is provided, and the side cover (95) covers the driving position of the transverse inner side of the machine body of the auxiliary harvesting device (7) from the inner side of the machine body.

8. A general type combine harvester according to claim 7,

a pre-treatment frame (61) for supporting the auxiliary harvesting device (7),

the side cover (95) is provided with a bulging part which extends upwards than the inner end of the pretreatment frame (61) and covers the driving part of the auxiliary harvesting device (7) positioned above the pretreatment frame (61) when viewed from the front,

the bulging portion has an inclined surface inclined inward in the lateral direction of the machine body at a position above the driving portion.

9. A general type combine harvester according to claim 7,

a pre-treatment frame (61) supporting the sub-harvesting device (7),

the sub-harvesting device (7) is disposed adjacent to the lateral outer side of the body of the pretreatment frame (61) in a plan view and protrudes upward from the pretreatment frame (61).

10. A general type combine harvester according to claim 9,

a divider (62) is provided at an end of the main harvesting device (63) in the harvesting width direction, the divider (62) being disposed at a front side of the main harvesting device (63),

the secondary harvesting device (7) is located behind the crop divider (62) in a top view.

11. A general type combine harvester according to claim 10,

an output connecting rod (84) for driving a cutter body (71) on the inner side of the machine body of the auxiliary harvesting device (7) to move up and down is arranged at the driving part of the auxiliary harvesting device (7),

the output link (84) overlaps the pretreatment frame (61) when viewed from the front.

12. A general type combine harvester according to claim 11,

the side cover (95) covers the output connecting rod (84) from the transverse inner side of the machine body,

the side cover (95) is positioned above the pretreatment frame (61) when viewed from the front.

13. A pre-harvest processing device (6) is provided with: a main harvesting device (63) for harvesting the planted crop, a conveying screw conveyor (65) for conveying the harvested crop, a roller type raking device (64) for raking the planted crop as a harvesting object by rotating the raking teeth (64 b),

it is characterized in that the preparation method is characterized in that,

the pre-harvest treatment device (6) is composed of a rear unit (Ur) and a front unit (Uf) connected with the rear unit,

the pre-harvest treatment device (6) is divided into the front unit (Uf) and the rear unit (Ur) in a front-rear manner,

the rear unit (Ur) is provided with the conveying screw conveyor (65) and the roller type raking device (64), and can replace a rice and wheat unit and a coarse cereal unit as a front unit (Uf) and be connected with the rear unit (Ur),

the front unit (Uf) is provided with a pair of left and right grain dividers (62), the grain dividers (62) are arranged at the left and right ends of the front part of the pre-harvest treatment device (6) and divide the planted stalks in the region to be harvested,

when the rice and wheat unit is connected to the rear unit (Ur) as the front unit (Uf), a rice and wheat divider is equipped to the front unit (Uf) as the divider (62), and the main harvesting device (63) is equipped to the rear unit (Ur),

when the coarse cereal unit is connected to the rear unit (Ur) as the front unit (Uf), a coarse cereal divider is provided as the divider (62) on the front unit (Uf), and the main harvesting device (63) is provided on the front unit (Uf).

14. The pre-harvest processing apparatus according to claim 13,

the unit for coarse cereals is provided with the main harvesting device (63) in a horizontal posture, and an auxiliary harvesting device (7) for cutting and planting crops in a vertical posture in the vertical direction is arranged at the position of the end part at the horizontal side of the harvesting action area of the main harvesting device (63).

15. The pre-harvest processing apparatus according to claim 13, wherein a distance between the main harvesting device (63) and the conveying screw conveyor (65) in a state where the unit for rice and wheat is connected to the rear unit (Ur) is set to be smaller than a distance between the main harvesting device (63) and the conveying screw conveyor (65) in a state where the unit for coarse cereals is connected to the rear unit (Ur).

16. The pre-harvest processing apparatus according to any one of claims 13 to 15, wherein the main harvesting device (63) is attached to a front end portion of a platform (61A) of the rear unit (Ur) with the rice and wheat unit (Uf 2) attached to the rear unit (Ur).

17. A pre-harvest processing device (6) is provided with: a main harvesting device (63) for harvesting the planted crop in a horizontal posture, a roller type raking device (64) for raking the planted crop as the harvesting object by rotating the raking teeth (64 b) at a position above the main harvesting device (63),

it is characterized in that the preparation method is characterized in that,

a sub-harvesting device (7) which cuts and plants crops in a vertical posture in the vertical direction is arranged at the lateral side end part of the harvesting action area of the main harvesting device (63),

a pre-treatment frame (61) for supporting the auxiliary harvesting device (7),

is provided with a mounting frame (70) supporting the rear side of the secondary harvesting device (7),

a support rod (72) is arranged, the support rod (72) is arranged on the rear side of the mounting frame (70) and is distributed on the upper part of the mounting frame (70) and the side part of the pretreatment frame (61),

is provided with a side cover (95), wherein the side cover (95) extends over the mounting frame (70) and the support rod (72).

18. The pre-harvest processing apparatus according to claim 17,

the side cover (95) is fixed to the mounting frame (70) and the support rod (72).

Images