JPH07246020A - Reaper-supporting structure of combine harvester - Google Patents

Abstract

PURPOSE:To improve the support structure of a reaper so that the reaping unit and the running machine body of a small-sized combine harvester may be compacted. CONSTITUTION:A mission case (M) is arranged in front of a body chassis 1 and a reaping input shaft case 13 which is a support shaft of vertical rotation of the reaper (A) is supported above the mission case (M) by sliding bearings 7a of left and right supporting members 7 formed on the body charssis 1 and extended forward. An elevation cylinder 5 is connected so as to be sandwiched between the cylinder connection part la of the body charssis and the cylinder connection part 16a of the first transmission shaft case 16 in an almost horizontal posture when viewed from the side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a reaper suitable for constructing a small combine.

[0002]

2. Description of the Related Art In a conventional combine, a structure in which a traveling mission case is mounted on the front upper part of a chassis which forms a main body part by mounting a combine threshing part, a sorting part, etc. There is known a mowing section elevating mechanism in which an elevating cylinder of hydraulic pressure or the like, which is an actuator that vertically pivots and vertically rotates the mowing section, is extended from a chassis. Among these, the vertical rotation fulcrum shaft of the mowing section is arranged above the front end of the chassis, and the lifting cylinder is arranged so that the mowing section is pushed upward from the front end of the chassis.

[0003]

With the demand for miniaturization of combine harvesters today, the traveling machine body on which the threshing section, the sorting section, etc. are arranged on the chassis, and the cutting section in front of the machine body are made compact. desired. Since the main body on the chassis needs to be arranged behind the mission case mounted in the front part, the main body part has to be extended rearward by that amount. If the mission case is placed in front of the chassis, it will lead to compactness of the traveling machine body, but since the vertical rotation fulcrum shaft of the mowing section at the rear end of the mowing section is arranged near the front end of the chassis, this fulcrum In order to dispose the transmission system member from the shaft to the pretreatment device such as the raising device of the cutting unit while avoiding interference with the mission case, the inclination angle to the front in side view must be made small. Therefore, on the contrary, the reaping part has a shape extending forward.

In order to make the reaper compact, the pretreatment device such as the raising device is also arranged rearward by increasing the front-back inclination angle of the transmission member extending forward from the vertical pivot of the reaper. In this case, however, the vertical rotation of the reaper cannot be coped with unless the expansion / contraction driving force of the elevating cylinder connected in the form of being pushed up from below is increased. In a small combine harvester, the cutting unit may be configured to slide left and right because the cutting unit does not extend over the entire width of the vehicle and is arranged on one side of the vehicle body. When the lifting cylinder rises to the upper position, the weight of the cutting part is applied to the connecting part of the cylinder, so the cylinder and the member that connects it will be twisted. There is a high risk of damage.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above problems and improves the reaper support structure by making both the reaper and the traveling machine body of a small combine compact. That is, in a combine having a structure in which a mowing part is arranged in front of the main body chassis 1 that supports the traveling body, the traveling mission case M is arranged in front of the main body chassis 1, and the vertical rotation fulcrum shaft of the mowing part is arranged. It is arranged above the mission case M so as to project forward from the main body chassis 1.

A main body chassis 1 for supporting the traveling machine body
In the combine of the structure where the mowing part is arranged in front of
An elevating cylinder 4 for raising and lowering the reaping section was arranged in a posture almost horizontal, and was connected to a part of the reaping section from the upper part of the main body chassis 1.

[0007]

By arranging the mission case M in front of the main body chassis 1, the traveling machine body supported by the main body chassis 1 can be made compact, while in the reaping section, the reaping section above the mission case M can be used. By disposing the vertically rotating fulcrum shaft in front of the main body chassis 1, the transmission system member of the pretreatment device can be disposed in front of the mission case with a large inclination angle in a side view. Can be moved to the rear, and the reaper can be made compact.

If the lifting cylinders are connected in a substantially horizontal state, a small cylinder can be used even if the front and rear inclination angles of the transmission system members of the pretreatment device are increased in order to make the cutting section compact. Since the reaper can be rotated up and down by the driving force and the load on the cylinder connecting portion due to the weight of the reaper is reduced, the durability of the cylinder is enhanced even if the reaper is a slide type.

[0009]

The problems and configurations to be solved by the present invention are as described above, and the embodiments of the present invention shown in the accompanying drawings will be described below. FIG. 1 is an overall side view of the mowing part slide combine, FIG. 2 is a front view of the same, FIG. 3 is a side view showing a mowing part supporting structure in the front part of the main body chassis 1, FIG. 4 is a plan view of the same, and FIG. Left and right rotation fixed position X of the transmission shaft case 16
・ A plan view showing a mode of the lifting cylinder 5 in Y, FIG. 6 is a front sectional view of the reaping input shaft case 13, FIG. 7 is a plan view of the vertical transport device 28, and FIG. 8 is a pretreatment device A ′ of the reaping section A. FIG. 9 is a side sectional view showing the transmission system, FIG. 9 is a plan sectional view showing the same, FIG. 10 is a plan view showing left and right slides of the pretreatment device A ′, and FIG. 11 is a schematic plan view of a handling depth adjusting mechanism of the inheritance transfer device, FIG.
2 is a schematic plan view showing the left and right slides of the inheriting and conveying device of the pretreatment device A ′ of the mowing unit A.

The overall construction of the slide combine of the reaper of the present invention will be described with reference to FIGS. 1 and 2. First, a traveling machine body supported by the main body chassis 1 supported on the crawler traveling device will be described. Left and right crawlers 4L and 4R
A main body chassis 1 made of sheet metal is disposed on a crawler traveling device that supports the engine, an engine E is mounted on the front right side of the main body chassis 1, and a mission case M is disposed in front of the main body chassis 1. Then, as shown in FIG. 4, the axle 2 of the drive wheels 3 of the crawler traveling device is attached to the mission case M.
Suspended L-2R. Conventionally, by disposing the mission case mounted on the main body chassis in front of the main body chassis, the front-rear length of the main body chassis 1 is short, and the traveling machine body is compact. Further, in the upper part of the main body chassis 1, a sorting part D is provided on the left side in the traveling direction, a threshing part C having a handling cylinder 58, a feed chain 57 and the like is formed on the upper part thereof, and a graining part is provided upward on the right side. A tank 60 is provided, and the paddy is stored in the fried conveyor 59 from the sorting section D, and a padding section for the paddy bag is provided below the paddy bag. Can be stored.

An operating portion B is formed on the right side in the traveling direction in front of the traveling machine body. At this operating portion B,
An operation panel 61 having a steering lever, a gear shift lever and the like projecting from it is disposed at the frontmost portion, and a seat 62 is disposed behind it.

A cutting section A is formed on the left front side of the traveling machine body, that is, on the left side of the operation section B. This embodiment is for two-row mowing, and the weeding board 23L is provided at the frontmost part of the mowing section A.
・ A pair of left and right raising devices 24L and 24R, which project 23M and 23R forwardly, are provided, and a cutting blade 25 is provided behind the lower end portion thereof.
And scraping transfer wheels 26L and 26R that are star wheels
Is provided to form a pretreatment device A ′, and a tip conveying device 27 and a vertical conveying device 28 are provided behind it. The grain culm is raised by the raising device 24, the root part is scraped into the cutting part A by the scraping transfer foil 26 and cut by the cutting blade 25, and the ear side is further transferred by the tip transfer device 27. The feed chain 5 of the threshing part C is held while the root side is held by the vertical transfer device 28 and is changed from the vertical position to the horizontal position.
It is transported to 7.

Regarding the structure of the reaping section A, FIG. 6 to FIG.
This will be described more specifically. As shown in FIG.
The reaping input shaft case 13 that pivotally supports the reaping input shaft 30 as shown in FIG. 2 is disposed on the left and right, and the right end portion of the reaping input shaft 30 projects from the reaping input shaft case 13 and the reaping input pulley 12 is It is attached and is belt-transmitted from the output shaft of the engine E. And the reaping input shaft 30
The bevel gear shaft 32 extends forward from the middle of the bevel gear, and the bevel gear shaft 32 extends forward of the reaping input shaft case 13 in the bevel gear gear case 15 pivotally extended in the left-right direction. As shown in FIGS. 8 to 10, the first transmission shaft 33 extends from the front end of the bevel gear shaft 32 to the lower part of the front portion by meshing with the bevel gear, and the first transmission shaft 33 is rotatably supported by the first transmission shaft 33. The upper end of the one transmission shaft case 16 is fixed to the lower end of the front part of the bevel gear case 15. That is, the first transmission shaft case 16 is rotatable with the bevel gear case 15 in the left-right direction with respect to the reaping input shaft case 13.

Further, as shown in FIGS. 8 to 10, a fixing plate 39 is extended and fixed from the reaping input shaft case 13, and pin holes 39a and 39b are formed therein. On the other hand, the first transmission shaft case 16 is fixedly provided with a pin fitting insertion portion 16b having a locking pin 40 that can be inserted and removed, and the first transmission shaft case 16 that is rotatable left and right as shown in FIG. The locking pin 40 is fitted in the pin hole 39a and fixed at the X position, and it is fitted in the pin hole 39b so as to be fixed at the Y position.

Below the center of the reaping section A, as shown in FIGS. 8 to 10, a second transmission shaft case 19 which axially supports the second transmission shaft 35 is disposed, and the first transmission shaft is provided. The lower end 33 is fitted in the middle of the second transmission shaft case 19 and is meshed with the second transmission shaft 35 via the sliding bevel gear 34 so that the right and left meshing angle can be changed. The first transmission shaft 33 is rotatably supported in the tip case 17 having an arc-shaped brim portion 17a fixed to the tip of the first transmission shaft case 16, and the tip case 17 is the second transmission shaft. It is fitted in the fitting portion 19a of the case 19 so as to be rotatable left and right, and the brim portion 17a is slidably joined in the direction of the second transmission shaft case 19 to the arcuate surface 19b formed outside the fitting portion 19a. There is.

Further, as shown in FIGS. 8 to 10, a support link 18 is pivotally connected to the second transmission shaft case 19 on the right side of the first transmission shaft case 16 from the cutting input shaft case 13. A parallel link is formed with one transmission shaft case 16. Therefore, when the first transmission shaft case 16 and the support link 18 are rotated to the left and right, the second transmission shaft case 19 is slid to the left and right while being held parallel to the reaping input shaft case 13. It should be noted that the support link 18 does not interfere with the mission case M disposed at the rear part of the reaping section A so as not to interfere with FIG.
As shown in, a part thereof is bent forward in a U shape in a side view.

Further, as shown in FIG. 9, the drive shafts 36L and 36R are transmitted by being raised from both ends of the second transmission shaft 35 by bevel gear engagement. Further, the cutting blade drive shaft 37 is extended forward from the middle of the second transmission shaft 35 by a bevel gear engagement, and the worm wheel attached to the drive shaft 38 of the scraping transfer wheel 26R is attached to the worm attached to the cutting blade drive shaft 37. Are engaged. The raising drive shaft cases 20L and 20R that pivotally support the raising drive shafts 36L and 36R are fixed above the left and right ends of the second transmission shaft case 19, and the cutting blade drive shaft 37 and the star wheel. The drive shaft case 21 that pivotally supports the drive shaft 38 is also fixed in front of the second transmission shaft case 19. Further, as shown in FIG. 12, the cutting blade 25 and the scraping transfer wheel 26L ・ 2
6R and three dividing rods 22L, 22M, 22R that support the lower ends of the raising devices 24L, 24R are also fixed and extend forward from the second transmission shaft case 19.

The pretreatment device A'consisting of the raising device 24, the cutting blade 25, the scraping transfer wheel 26, etc. is provided in the second transmission shaft case 19 as the first transmission shaft case 16 and the support link 18 rotate left and right. The left and right slides can be integrally slid to the left and right, and further, the first transmission shaft case 16 can be fixed to the X position and the Y position by fixing the first transmission shaft case 16 with the locking pin 40. In front view, the raising devices 24L and 24R and the weed rods 22L, 22M and 22R, and the weed plate 23L fixed to the tip of each weed rod 22L, 22M and 22R
Looking at the slide positions of 23M and 23R, when the first transmission shaft case 16 is in the X position as shown in FIG. 2, it is the operation portion B side, that is, the right side (left side in front view), and the Y position. Is on the outer side, that is, on the left side (on the right side in front view) (hereinafter, the position of the pretreatment device A ′ when the first transmission shaft case 16 is set to the X position and the Y position is also the X position and the Y position, respectively).
Called position). First, at the edge of the ridge, etc., it is necessary to mow up to the outer edge of the left crawler 4L, so that the raising device 24L (the weeding board 2) is attached to the outer edge of the left crawler 4L.
3L) is cut at the X position where the outer ends overlap, but after that, in order to avoid a situation in which the planted culm is laid down due to the mud gathering of the left crawler 4L, the raising device 24L (division board 2
3L) is slid further to the left than the left crawler 4L to the Y position for mowing.

Next, a description will be given of the member configuration of the tip transporting device 27 and the vertical transporting device 28, which are the inheriting transporting devices of the cutting section A, and the left and right slide configurations thereof. As shown in FIG. 6, a transport drive case 14 is rotatably connected to the left end portion of the reaping input shaft case 13 so as to be rotatable around the reaping input shaft case 13 in order to make the inherited transport device rotatable up and down. A conveyance drive shaft 31 rotatably supported therein is transmitted from the reaping input shaft 30 via bevel gears 30a and 31a. The upper and lower ends of the transport drive shaft 31 are projected above and below the transport drive case 14, and the upper end is the drive sprocket 27a of the tip transport device 27 and the lower end is the drive sprocket 28a of the vertical transport device 28. It is fixedly installed on the head and drives the carrier chains 27b and 28b of the tip carrier device 27 and the vertical carrier device 28.

The tip conveying device 27 includes a plurality of tines 27c.
By driving the tip conveying chain 27b equipped with and holding the tip portion of the grain culm to convey, the vertical conveying device 28 holds the root portion of the grain culm by the vertical conveying chain 28b and stands the posture of the grain culm. The feed chain 57 of the threshing part C inherits it while transporting it while changing the posture from the horizontal posture. Further, the front driven sprocket 28c of the vertical transfer device 28 shown in FIG. 7 has a pretreatment device A ′ according to the left and right rotation of both transfer devices 27, 28.
It is possible to slide back and forth so that the inheritance position for can be changed back and forth.

As shown in FIGS. 6 and 7, the upper end of the transport drive shaft 31 is rotatably fitted in a cover 27d covering the lower portion of the tip transport device 27, and is rotatable in the transport drive case 14. An upper end portion and a lower end portion of the rotary connecting plate 29 fitted to the outside are fixed to the tip transporting device 27 and the vertical transporting device 28, respectively, and both transporting devices 27, 28 rotate integrally around the transport drive case 14. It is freely movable, so that both transport devices 27 and 28 can be rotated left and right.

Further, from the transport drive case 14, 41a
A fixed plate 41 having two pin holes 41b is provided so as to project, and a rotary connecting plate 29 integral with both the transport devices 27 and 28.
By making it lockable with the locking pin 42, both the transport devices 27 and 28 can be selectively fixed to two positions of the X'position and the Y'position by the lateral rotation operation thereof. . Each fixed position X '/ Y' is a pre-processing device A '.
It corresponds to the fixed positions X and Y, and is a position where the inheritance transfer device can smoothly inherit the grain culm from the pretreatment device A ′ fixed at that position. That is, as shown in FIG. 12, the front end of the vertical transfer device 28 is located at the end position of the meshing portion of the left and right scraping transfer wheels 26L and 26R of the pretreatment device, and the front end of the tip transfer device 27 is located immediately thereafter. Thus, the fixed positions X'and Y'are set.

Further, as shown in FIG. 8, a lower end of a U-shaped rod 43 is fixedly provided on the right side of the tip conveying device 27, the U-shaped rod 43 is provided above the tip conveying device 27, and further, a U-shaped rod is provided. Through the connecting plate 44 from the left end of 43, the pinching guide 45 is made to face the vertical transport chain 28b that is in contact with the grain culm transport path on the left side of the vertical transport device 28. The grain culms are conveyed backward while being pinched by the vertical conveying chain 28b and the pinching guides 45 on this conveying path, and due to the elasticity of the U-shaped rod 43 and the connecting plate 44 made of a metal material. The pinching guide 45 has a function of a leaf spring having an urging force to press the vertical transport chain 28b, and when the grain culm transport amount is large, it is spread outward, and when it is small, it returns to the inner side to pinch the grain culm. The pressure is made to correspond to the transfer amount.

Next, the handling depth adjusting mechanism in the tip transporting device 27 and the vertical transporting device 28 configured to be rotatable left and right as described above will be described. In order to feed the grain culms to the feed chain 57 in an appropriate state, the carrier drive case 14 is vertically rotated around the cutting input shaft case 13 to vertically adjust the tip carrier device 27 and the vertical carrier device 28. The transport chain 28b of the vertical transport device 28 adjusts the position at which the root of the grain culm is gripped according to the length of the grain culm. First, as a handling depth detection sensor, as shown in FIG. 7, an L sensor 54 is provided so as to project in the transport path of the vertical transport device 28, and the U sensor rod 43 is located above the tip transport device 27 as shown in FIGS. As shown in FIG. 2, the M sensor 55 and the H sensor 56 are vertically provided so that the tips of the grain culms come into contact with each other.

As shown in FIGS. 8 and 11, the vertical movement of the tip conveying device 27 and the vertical conveying device 28 is performed by the handle depth adjusting member 48 screwed on the vertically arranged drive screw shaft 49. The link 47 is connected to the U-shaped rod 43, the U-shaped rod 43 moves up and down in accordance with the handling depth adjusting member 48 sliding up and down on the drive screw shaft 49, and the U-shaped rod 43 conveys the tips. Device 2
Since it is fixed to No. 7, the tip transfer device 27 and the vertical transfer device 28 are integrally rotated together with the U-shaped rod 43. Drive screw shaft 49 is raised to the right and drive shaft case 2
It is rotatably supported by a supporting member 50 projecting from 0R, and the handling depth sensors 54, 55, 56 are turned on.
It is connected to a motor shaft 51a of an electric motor 51 which is driven and controlled by being turned off. The handling depth adjusting member 48 screwed around the drive screw shaft 49 slides in the axial direction (vertical vertical direction) of the drive screw shaft 49 by the rotation of the drive screw shaft 49.

A guide pin 48a is provided so as to project from the handling depth adjusting member 48 so that the sliding posture thereof is maintained constant, while the guide plate 52 is raised to the right to drive shaft case 20.
A guide groove 5 which is supported by R and is arranged in parallel with the drive screw shaft 49 and which is formed in a direction perpendicular to the drive screw shaft 49.
Guide pin 48a in which a rotatable roller is provided around 2a
Is slidably fitted. Limit switches 53, 53 are provided at the upper and lower ends of the guide groove 52a, and when the guide pin 48a abuts the switch, the electric motor 5
The drive of 1 stops.

As shown in FIG. 11, the link 47 is configured to be bendable in a V shape in plan view so as to be able to slide the left and right transport devices 27 and 28. Link 4
In the connection configuration of No. 7, the link members 47a and 47b are horizontally rotatably pivotally connected to the link mounting plate member 48b protruding from the handling depth adjusting member 48, and the rotation absorbing member is provided at the rear end of the link member 47b. The plate-shaped portion 46a of 46 is pivotally supported, and the pivot pin 43b of the mounting portion 43a protruding from the U-shaped rod 43 is rotatably fitted into the tubular portion 46b of the rotation absorbing member 46. . At the time of adjusting the handling depth, both the transport devices 27 and 28 rotate up and down with the reaping input shaft case 13 as a fulcrum, so the vertical angle with respect to the handling depth adjusting member 48 and the link 47 changes.
The rotation absorbing member 46 absorbs the vertical rotation of both the transfer devices 27 and 28 and the U-shaped rod 43 by making the pivot support pin 43b fixed to the U-shaped rod 43 in the tubular portion 46b rotatable. do it,
The link 47 and the handling depth adjusting member 48 can be held horizontally.

The link 47 flexes and extends in the left-right direction to cope with the left-right sliding of the two conveying devices 27, 28. When both the transport devices 27 and 28 are at the X'position, the link members 47a and 47b of the link 47 are linear (the link position at this time is also referred to as the X'position), and the both transport devices 27 are
When the 28 is in the Y'position, the link members 47a, 47
b has a bent shape (the link position at this time is also called the Y'position). Pretreatment device A'for cutting other than the edge
Is in the Y position, both the transport devices 27, 28 are in the Y'position. In this state, the pretreatment device A'is in the X position in response to mowing at the edge of the ridge, and both transport devices 27, 28 are in the Y position. Since the frequency is higher than that in the X'position, the link 47 is set in the highly bent state at the Y'position.

As described above, in the reaping section A, the pretreatment device and the inheritance transfer device are slidable from side to side. Next, the support structure of the entire mowing unit A will be described with reference to FIGS. 3 and 4. The entire reaping section A is supported by supporting the reaping input shaft case 13, which is a vertically rotating fulcrum shaft of the reaping section A, on the upper ends of the left support member 7 and the right support member 8 projecting forward from the main body chassis 1. ing. The left support member 7 is
It stands upright from the main body chassis 1, and the upper part thereof is bent forward and extends horizontally. The right support member 8 is formed by fixing an inclined member 8b that is vertically erected in front of the main body chassis 1 and a horizontal member 8c that extends horizontally from above the main body chassis 1. The members 7 and 8 are integrally connected by a connecting horizontal shaft 9 in order to improve the strength.
Sliding bearings 7a and 8a are formed at the upper end portions of the cutting input shaft case 13, and the cutting input shaft case 13 is rotatably supported in the left-right direction. In addition, the reaping input shaft case 13
A belt is wound around the input pulley 12 on the right side from a transmission pulley 10 from the engine E, and a tension pulley 11 is pivotally supported on the right support member 8.

In this way, in the supporting members 7 and 8 which are erected from the main body chassis 1, the sliding bearing 7a at the upper end thereof is provided.
8a extends forward of the base ends of the support members 7 and 8 and is disposed forward of the front end of the main body chassis 1 and further in front of the main body chassis 1. It is located above M. The mission case M, which is conventionally mounted on the main body chassis 1, is arranged in front of the main body chassis 1 in order to downsize the traveling machine body and shorten the main body chassis 1 as described above.
If the reaping input shaft case 13 is supported behind the mission case M, the reaping input shaft case 1
In order to avoid interference with the transmission case M, the first transmission shaft case 16 extending forward from the position 3 must have a small inclination angle in the front-rear direction, whereby the pretreatment device of the cutting unit A is moved forward. Therefore, the front-back length of the reaping section A becomes long. However, in the combine of the present embodiment, the bearing positions 7a and 8a of the left and right support members are arranged as described above, and the support position of the reaping input shaft case 13 is set as follows.
Since it is moved forward above the mission case M,
The first transmission shaft case 16 can be arranged in front of the transmission case M with a steep front-back inclination. As a result, the reaper A
The pre-treatment device part of the
Can be made compact.

Next, the elevating structure of the mowing section A will be described. As shown in FIGS. 3 to 5, the cylinder connecting portion 1a is fixed to the front portion of the main body chassis 1, while the cylinder connecting portion 16a is fixed to the first transmission shaft case 16 of the mowing portion A. Cylinder joints 1a and 16a have spherical joints 6 and 6 respectively.
Is pivotally supported. The spherical joint 6 is constructed by externally fitting a spherical member 6b on a pivot shaft 6a. On the other hand, thrust bearings are provided on the left and right sides of the cylinder connecting portions 1a and 16a, respectively. The left and right ends of the pivot shaft 6a are pivotally supported. The spherical joints 6 and 6 pivotally supported by the cylinder connecting portions 1a and 16a respectively include a front end sliding ring 5b fixed to the front end of the cylinder rod 5a of the lifting cylinder 5 for hydraulic pressure and a cylinder base end portion. A rear end sliding ring 5c fixed to the above is slidably fitted to the outside so that the lifting cylinder 5 is connected between the cylinder connecting portions 1a and 16a so as to be rotatable left and right.

By connecting in this way, when the first transmission shaft case 16 rotates left and right as the cutting section A slides left and right, the slide rings 5b and 5c at the front and rear ends are placed on the spherical joints 6 and 6. The lift cylinder 5 is not twisted by freely sliding, and the first transmission shaft case 16
The left and right rotation of is free. Further, as the left and right slides, a load is applied to the bearings of the respective cylinder connecting portions 1a and 16a in a direction other than the axial direction of the pivot shaft 6a of the spherical joint 6, so that a twisting force is generated.
Absorbing the twist.

When the cylinder rod 5a of the lifting cylinder 5 connected as described above is driven to expand and contract, the first transmission shaft case 16 is rotated up and down with the rotatable cutting input shaft case 13 as the fulcrum shaft, and the cutting The entire part A is moved up and down.

In this embodiment, the lifting cylinder 5 is connected to the first transmission shaft case 16 with the position of the cylinder connecting portion 1a of the main body chassis 1 toward the rear.
Is generally horizontal when viewed from the side. Conventionally, the lifting cylinder is connected to the first transmission shaft case 16 from the front of the main body chassis in an upright manner, but in this case, the cylinder bears the entire weight of the cutting portion, and therefore a very strong cylinder driving force is required. . Furthermore, if the reaper is configured to slide left and right,
As described above, even when the sliding ring is slidably fitted on the spherical joint to be connected, the cylinder is in a rising shape, so that the cutting portion is formed at the joint between the sliding ring and the spherical joint surface. And the sliding ring does not freely slide on the spherical joint, and as a result, the connecting portion becomes unsteady and the cylinder is highly likely to be broken. Therefore, as shown in FIG. 3, if the elevating cylinder 5 is connected in a substantially horizontal shape, the weight of the mowing part is not applied to the elevating cylinder 5, and the cylinder driving force is small (however, the stroke amount is large).
Since the weight of the cutting portion is not applied to the sliding rings 5b and 5c fitted on the spherical joint 6, the spherical joint 6 can be freely slid, no twisting occurs, and the lifting cylinder 5 is not damaged.

Further, in the left and right rotation region of the first transmission shaft case 16 from the X position to the Y position, the lifting cylinder 5 is moved.
Is set so as to be linear in the front-rear direction as shown in FIG. 5 at the center of the left-right rotation region, and the left-right tilt angles at the X position and the Y position are made substantially equal. The horizontal rotation is accompanied by the vertical rotation of the first transmission shaft case 16 and the lifting cylinder 5, but with this configuration, the vertical rotation amount is minimized to perform the horizontal sliding operation of the cutting unit. The load can be reduced. Therefore, it is possible to easily manually slide the reaping unit left and right.

[0036]

Since the present invention is configured as described above, it has the following effects. That is, according to the present invention, by disposing the mission case M in front of the main body chassis 1 as described in claim 1, the front-rear length of the traveling machine body can be shortened, and further, the vertical rotation fulcrum shaft of the cutting unit is provided in the main body. Since it is arranged in front of the chassis 1 and above the mission case M,
The mowing fulcrum shaft which is the rear end of the mowing part is moved forward, and the mowing part transmission system such as the first transmission shaft case 16 extending forward from the mowing input shaft case, which is the vertical rotation fulcrum shaft of the mowing part, In front of the mission case M, the mission case M
Since it can be installed with a large inclination in the front-rear direction, i.e., it can be arranged close to the vertical shape without interfering with, As a result, it is possible to configure a compact combine machine in which both the traveling machine body and the cutting unit are made compact.

Further, conventionally, since the raising / lowering cylinder of the mowing section is connected from the front of the main body chassis to a part of the mowing section such as the first transmission shaft case 16 in a rising manner, the weight of the mowing section is attached to the lifting cylinder. In addition, in the combine with the reaper being slidable left and right, the weight of the reaper is not attached to the spherical joint even if the cylinder is rotatable by inserting a spherical joint in the connecting portion of the cylinder. As a result, a load is applied to the left-right rotation operation, and there is a high possibility that a twist or the like may occur and the cylinder or the like may be damaged.
Since the lifting cylinder is arranged in a substantially horizontal shape,
Since the weight of the mowing section is not applied to the lifting cylinder and its connecting portion, the cylinder driving force can be reduced, and even when the mowing section is configured to slide left and right,
The load of the left / right turning operation is reduced, the twisting caused by the left / right turning is reduced, and the durability of the cylinder and the members connecting the cylinder to the left / right sliding operation of the cutting unit is improved.

[Brief description of drawings]

FIG. 1 is an overall side view of a mowing section slide combine.

FIG. 2 is a front view of the same.

FIG. 3 is a side view showing a reaping part support structure in a front part of the main body chassis 1.

FIG. 4 is a plan view of the same.

FIG. 5: Left-right rotation fixed position X of the first transmission shaft case 16
It is a top view which shows the aspect of the raising / lowering cylinder 5 in Y.

FIG. 6 is a front cross-sectional view of a reaping input shaft case 13.

7 is a plan view of the vertical conveyance device 28. FIG.

FIG. 8 is a side sectional view showing a transmission system of a pretreatment device A ′ of the mowing unit A.

FIG. 9 is a plan sectional view of the same.

FIG. 10 is a plan view showing left and right slides of a pretreatment device A ′.

FIG. 11 is a schematic plan view of a handling depth adjusting mechanism of the inheritance transfer device.

FIG. 12 is a schematic plan view showing the left and right slides of the inheriting and conveying device of the pretreatment device A ′ of the mowing unit A.

[Explanation of Codes] A Mowing part M Mission case 1 Main body chassis 1a Cylinder connecting part 5 Lifting cylinder 5a Cylinder rod 5b Front sliding ring 5b Rear sliding ring 6 Spherical joint 6a Pivot shaft 6b Spherical member 7 Left support member 7a Sliding bearing 8 Right support member 8a Sliding bearing 13 Cutting input shaft case 13 16 First transmission shaft case 16a Cylinder connecting part

Claims (2)

[Claims] 1. In a combine having a structure in which a reaping section is arranged in front of a main body chassis 1 for supporting a traveling machine body, a traveling mission case M is arranged in front of the main body chassis 1, and the reaping section is vertically rotated. A harvester support structure for a combine, wherein a fulcrum shaft is arranged above the mission case M so as to project forward from the main body chassis 1. 2. In a combine having a structure in which a reaping part is arranged in front of a main body chassis 1 for supporting a traveling machine body, an elevating cylinder 4 for raising and lowering the reaping part is arranged in a nearly horizontal posture, and the main body chassis 1 A combine harvester support structure characterized by being connected to a part of the harvester from above.