JPH0114105Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a combine harvester in which a culm lifting section and a culm conveying section for conveying the reaped culm backwards toward a threshing device are connected to a vehicle body in a rolling manner.

The above-mentioned combine harvester is designed so that the stem culm lifting and reaping part and the stem culm conveying part can be operated in a rolling manner relative to the vehicle body, thereby preventing the vehicle body from tilting to the left or right when working in wet fields, for example. Even if the crop is damaged, the stalk culm lifting and reaping section and the stalk culm conveying section are maintained in proper postures with respect to the rice field, so that good reaping and harvesting work can be performed.

However, in order to support the stalk culm lifting and reaping section and the stalk culm conveying section in a rolling manner, conventionally, the rear end of the stalk culm conveying section is pivoted to the vehicle body around the longitudinal axis, thereby preventing rolling. A method has been proposed in which the stalk culm is smoothly supplied to the threshing device, and the stalk culm lifting and reaping section is connected to the stalk culm conveying section so as to rotate integrally. In this case, the weight of each of the stem culm lifting and reaping part and the stem culm transporting part is entirely applied to the rear end pivot part of the stem culm transporting part, which is disadvantageous because the said pivot part is easily worn out and damaged at an early stage. It was hot.

An object of the present invention is to support the stalk culm lifting and cutting section and the stalk culm conveying section so that they can be rolled smoothly over a long period of time.

The characteristic configuration of the present invention is that a stem culm pulling and reaping section is rotatably supported around a longitudinal axis on a frame extending forward from the vehicle body, and the harvested stem culm from the lifting and reaping section is transferred to a threshing device. A rear end portion of a stem culm conveying unit that is conveyed rearward toward the vehicle body is rotatably supported on the vehicle body around an axis in a longitudinal direction, and a front end portion of the stem culm lifting and reaping unit and the stem culm conveying unit are connected to each other. A link mechanism is provided to interlock and connect these so that they roll together.

Next, the effects of the feature configuration of the present invention will be described.

That is, the rear end of the stem culm conveying section is pivoted around the longitudinal axis on the vehicle body, and the stem culm lifting and reaping section is supported around the longitudinal axis on a frame extending forward from the vehicle body. The stem culm conveying section, the stem culm lifting and reaping section are each pivoted to the vehicle body, and the stem culm conveying section and the stem culm lifting and reaping section are integrated by a link mechanism. The stem culm conveying part and the stem culm lifting and reaping part are connected to the vehicle body in a rolling manner by interlocking and connecting them so that they can roll. It is possible to reduce the weight load acting on the pivot against the vehicle body compared to the conventional structure mentioned above in which the stalk culm lifting section and the stalk culm conveying section are simply pivoted by one pivot. Thus, it has become possible to roll the stem culm lifting and cutting part and the stem culm conveying part for a long period of time while suppressing early wear and damage of their pivot parts against the vehicle body.

Next, embodiments of the present invention will be described based on the drawings.

As shown in Figures 1 and 2, between 5 weeding tools 1 arranged at appropriate intervals in the width direction of the machine, 4
Form 4 stem culm introducing paths A..., and cut the base of the culm of the 4 stem culms introduced into each path A... for pulling up the stem culms planted in the field. Cutting blade 3, two paths A on the left, cutting stem culms of A,
Also, four raking packers 4 are provided to merge the reaped stem culms of the two right paths B and B to form a stem culm lifting and reaping section 5, and the right merged reaped stem culms are connected to the stock. The main rear transport device 8 transports grains in a state where the grains are clamped and the ears are locked, and is moved to the left in the width direction of the machine body as it is transported rearward, and is supplied to the feed chain 7 of the threshing device 6 in a sideways posture. In addition to providing
The auxiliary rear conveyance device 9 is connected to the main rear conveyance device 8 by conveying the left merged reaped stem culm rearward while holding the stock base and retaining the tip and feeding it to the intermediate portion in the conveyance direction of the main rear conveyance device 8. It is provided on the left lateral side and constitutes the stem culm conveying section 10, and is further located on the right lateral side of the threshing device 6, the crawler traveling device 11 located below it, the engine 12, and the rear conveying section 10. A driver's seat 13 and the like are provided to configure the vehicle body, and as the machine advances, the work of lifting and reaping the stem culms planted in the field and successively threshing the harvested stem culms is carried out continuously. A combine harvester is configured to perform the following.

As shown in FIGS. 2 and 3, the cylindrical frame 14 supporting the lifting reaping section 5 is pivoted on a mounting base 15 provided on the vehicle body so as to be vertically movable around the horizontal axis X. The distal end portion 14A of the cylindrical frame 14 is fitted onto the proximal side of the cylindrical frame 14 so as to be relatively rotatable about the axis _Z1 in the longitudinal direction. An L-shaped cylindrical frame 14B is connected to the proximal end of the cylindrical frame 14 and is connected to the cylindrical frame 14 so as to be able to move up and down as well as roll. , supported rotatably around the longitudinal axis Z ₂ ,
The rear conveyance section 10 is connected to the vehicle body so that it can be moved up and down as well as rolled, and the reaping section can be moved up and down. Then, the V-shaped cylinder connecting arm 1
6 is pivoted to the proximal end portion of the reaping support frame 14 so as to be able to swing freely around the horizontal axis, and the distal end portion 1 of the reaping support frame 14 is supported by swinging back and forth.
A rolling hydraulic cylinder 17 for swinging the cylinder connecting arm 16 back and forth is installed between the arm 16 and the proximal end portion of the support frame 14. A lifting hydraulic cylinder 18 for lifting and lowering the reaping support frame 14 is installed between the arm 16 and the vehicle body.
A horizontal shaft 1 rotatably pivotally connected to the tip 14A of the
9 and the main and auxiliary rear conveyance devices 8, 9 respectively.
Link mechanisms 20, 2 that can bend and extend the starting ends of each
0, and the lever 21 for adjusting the handling depth,
An arm 23 and the horizontal shaft 19 are pivotally supported on a lever support frame 22 fixed to a mounting base 15 of the reaping support frame 14 so as to be able to swing back and forth, and swing together with the lever 21.
A rod 25 that interlocks and connects an arm 24 that rotates integrally with the reaping support frame is provided in a state in which it is bendably connected to both arms 23 and 24 so as to allow rotation of the cutting support frame tip 14A, and the handling depth can be adjusted. The reaping support frame 1 is in a state where the lever locking frame 26 that locks and supports the lever 21 at a plurality of positions in the front and back direction is released from the lock by horizontal swinging of the lever 21, and the reaping support frame 1
It is provided in a fixed state to the mounting base 15 of No. 4. In addition, the lifting reaping section 5 and the rear conveyance section 10 are configured to be able to be integrally rolled against the vehicle body by the telescoping operation of the rolling hydraulic cylinder 17, and by the telescoping action of the lifting hydraulic cylinder 18,
The lifting reaping section 5 and the rear conveyance section 10 are configured so that they can be raised and lowered integrally with respect to the vehicle body, and further, the rear conveyance section 10 is swung up and down by swinging the handling depth adjustment lever 21 back and forth to adjust the handling depth. The structure is designed to maintain a constant value.

Further, when the reaping support frame 14 is raised or lowered within the reaping range below the set height relative to the vehicle body, the bending/extending link mechanisms 20, 20 are biased toward the bending side by the weight of the conveying section 10. The rod 25 is configured to be pushed and pulled in the bending direction when rising and in the extending direction when descending, so that even if the cutting support frame 14 is raised or lowered to change the cutting height, The height above the ground in the conveying section 10 is maintained substantially constant, so that unnecessary fluctuations in handling depth can be suppressed as much as possible. As shown in FIG. 5, the handling depth adjustment lever 21 is pivotally supported on a support shaft 41 that rotates integrally with the arm 23 so as to be relatively swingable.
The locking pin 42 fixed to the support shaft 41 is attached to the lever 21
When the reaping support frame 14 is raised above the set height relative to the vehicle body, or when the reaping support frame 14 is raised above the set height relative to the vehicle body, When the reaping support frame 14 is raised within the reaping range when the reaping support frame 10 is significantly swinging downward, the cover 4A is fixedly arranged above the reaping car 4.
By pressing and swinging the conveying section 10 upward, damage to the conveying section 10 and the packer 4 can be avoided.

A drive rotating horizontal shaft 27 to which the engine output is transmitted by a belt is fitted and supported in the base end of the reaping support frame 14 for relative rotation, and a transmission shaft 28 for the pulling reaping section is rotated within the reaping support frame 14. It is provided in a state in which a bevel gear is interlocked with the horizontal shaft 27, and the rear conveyance section 1
The input shaft 29 provided at the terminal end of the rotary horizontal shaft 27
are interlocked and connected via a bevel gear interlocking mechanism 30.

As shown in FIGS. 3 and 4, the driver's seat 1
3 is provided with a front-rear shaft 31 for lever support, and an arm 32 supporting the front-rear shaft 31 is supported so as to be movable back and forth using a horizontal shaft 34 on a fixed frame 33 connected to the vehicle body. Move the lever 35 to the front and rear shafts 31
It is pivoted so that it can swing left and right. The rolling cylinder 17 and the lifting cylinder 18
control valves 36, 37 for each of
is fixed to the mounting base 15 of the reaping support frame 14, and an arm 38 connected to the lever 35 is connected to the rolling valve 36 via a release wire 39 so that it can be switched by swinging the lever 35 left and right. The longitudinal axis support arm 32 is connected to the lever 35 with respect to the lifting valve 37.
The control lever 35 is interlocked and connected via a release wire 40 so that switching can be performed by swinging back and forth, and the operating lever 35, which can be swinged left and right and back and forth, performs rolling operation by swinging left and right, and lifts and lowers by swinging back and forth. It is configured so that it can be operated.

In carrying out the present invention, the specific structures of the stem culm lifting and cutting section 5 and the stem culm conveying section 10 can be modified in various ways.

Further, the structure for rolling the stalk culm lifting and reaping section 5 and the stalk culm conveying section 10 can be modified in various ways, such as by providing an electric motor in place of the hydraulic cylinder 17.

[Brief explanation of the drawing]

Fig. 1 is a side view of the front part of the combine, Fig. 2 is a schematic plan view of the same part, Fig. 3 is a diagram of the connection between the operating lever and both valves, Fig. 4 is a perspective view of the operating lever mounting part, and Fig. 5 is a schematic plan view of the front part of the combine. The figure is a perspective view showing the pivoting part of the handling depth adjustment lever. 5... Stem culm lifting section, 6... Threshing device, 10...
Stem culm conveyance section, 14...frame, 20, 20...link mechanism, _Z1 , _Z2 ...front-back axis.

Claims (1)

[Scope of utility model registration request] A stem culm lifting unit 5 and a stem culm conveying unit 10 that conveys the harvested stem culm backwards toward the threshing device 6.
is a combine harvester connected to a car body so as to be capable of rolling operation, and the stem culm pulling reaping part 5 is rotatably supported on a frame 14 extending forward from the car body about an axis _Z1 in the longitudinal direction. , a rear end portion of the stem culm conveyance unit 10 is rotatably supported on the vehicle body around an axis _Z2 in the longitudinal direction, and the stem culm lifting and reaping unit 5 and the front end portion of the stem culm conveyance unit 10 are connected to each other. A combine harvester characterized in that a link mechanism 20, 20 is provided which interlocks and connects these so that they roll together.