JPS6349161Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a cutting section that is connected to the machine so as to be able to swing up and down, and the handling depth can be adjusted by swinging up and down, and the harvested grain culm is placed in an upright position. A device is provided to convey and feed the grain to the rear threshing section while changing the attitude to the sideways posture, and the tip of the conveyed grain culm whose attitude has been changed to the sideways posture is extended forward from the threshing section to the upper part of this conveying and feeding device. A cover that slides and guides on the inlet plate is provided, and the conveyor is provided at a position further inward and forward than the lateral outer edge of the inlet plate on the opposite side of the conveyor supply device from the side where the threshing feed chain is present. The present invention relates to a structure of a harvested grain culm conveying and supplying section of a combine harvester, in which a lever guide member for vertically swinging operation of a feeding device is provided in a state where it can swing vertically together with the reaping section.

In the above structure, the vertically swinging operating lever guide member of the conveying and supplying device is provided in a position inwardly and forwardly than the lateral outer edge of the entrance plate, so that the width of the lever guide member is However, in order to ensure the desired amount of elevation of the reaping section, it is necessary to adjust the upper and lower positions of the lever guide member. At a location corresponding to the front end corner of the inlet plate located within the swing range,
It is necessary to cut out a space sufficient to allow the lever guide member to swing, and as a result,
The tip of the harvested grain culm that is transferred and guided from the conveyance and feeding device to the inlet plate is likely to get caught in the notch formation part of the space, causing disturbance in the transportation and supply posture of the harvested grain culm and causing grain loss due to shedding. I had an easy problem.

The purpose of the present invention is to make it possible to avoid troubles as much as possible at the point where the harvested grain culm is transferred from the conveyance/feeding device to the inlet plate as described above by adding a simple configuration. In the above-mentioned device, a space that allows the lever guide member to swing is formed by cutting out a space corresponding to a front end corner of the inlet plate located within the vertical swing range of the lever guide member. ,
The present invention is characterized in that a grain culm tip receiving plate that closes the notch space is extended from the conveying and feeding device side.

In other words, a space is cut out to allow the swinging of the lever guide member at a location corresponding to the front end corner of the inlet plate, so that the desired vertical movement of the reaping section can be sufficiently secured, while the conveyance supply device side The notch space can be kept closed at all times regardless of the swinging of the lever guide member, that is, regardless of the raising and lowering of the reaping section, by simply extending the grain culm tip receiving plate from the top. Because of this, as mentioned above, the tip of the harvested grain culm that is transferred from the conveyance and supply device to the inlet plate will not get caught or fall into the notch space, and the grain culm conveyance and supply posture will not be disturbed or grains will fall off. It has now become possible to smoothly supply the harvested grain culm from the conveying and feeding device onto the entrance plate of the threshing section while avoiding grain loss due to this as much as possible.

Further, a lateral outer edge of the inlet plate, and
When the lateral outer edge of the grain culm tip receiving plate is bent and formed with a rising portion that comes into relative sliding contact with the up and down movement of the conveying and feeding device, the grain tip portion of the harvested grain culm The grain hangs down from the lateral outer edge of the grain culm tip receiving plate and the lateral outer edge of the inlet plate and does not get caught on other structural members, and this prevents disturbances in the conveying and feeding posture due to this hanging of the ear tip. Problems such as grain loss due to shedding can also be effectively avoided.

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

As shown in Fig. 1, the front part of this machine A has a threshing section 1 and a pair of left and right crawler running devices 2, 2, a pair of left and right pulling devices 3, 3, a clipper type reaping device 4, and a grain culm. From the head auxiliary conveyance devices 5, 5 and stock base auxiliary conveyance devices 6, 6 which merge and convey rearward, and the device 7 which conveys and supplies the merged harvested grain culm from an upright position to a horizontal position while conveying it to the threshing section 1. The reaping section B is connected and supported so that it can be driven up and down, and the conveyance supply device 7 is vertically swung around a rear fulcrum to change the conveyance starting end toward the culm to adjust the handling depth. In the combine harvester, as shown in FIGS. 2 and 3, the conveying and feeding device 7 is a device 7A that grasps the stock base of the harvested grain culm and conveys and feeds it to the threshing feed chain 8. , a device 7 that locks the ear end side of the harvested grain culm and conveys and supplies it to an inlet plate 9 extending forward from the lower end edge of the grain culm supply opening of the threshing section 1;
B, and both of these conveying devices 7A, 7
Conveyance guide covers 10 and 11 for the stock base and ear tip of the harvested grain culm are provided between B and above the ear locking and conveying device 7B.

Further, a rubber cover 12 is installed over the rear ends of both the covers 10 and 11 to slide and guide the tip and stock portion of the conveyed grain culm whose posture has been changed to the sideways posture onto the inlet plate 9. , a threshing feed chain 8 for the conveyance supply device 7
At a position opposite to the lateral outer edge of the inlet plate 9 and inwardly forward of the lateral outer edge of the inlet plate 9, there is an operating lever 13 for adjusting the handling depth for the conveying and supplying device 7, and this operating lever 13 is moved to an arbitrary handling depth. A lever guide member 14, which can be locked and held in the vertical adjustment position, is provided on a reaping frame 15, which is a component of the reaping section B and is movable up and down with respect to the machine A.

Thus, a space 16 that allows the lever guide member 14 to swing is formed at a location corresponding to the front end corner of the inlet plate 9 located within the vertical swing range of the lever guide member 14, and this cutout Grain culm tip receiving plate 17 in a state of closing space 16
is attached to the lever guide member 14 as shown in FIG. 4 and FIG.
7 are provided with rising portions 18 and 19, respectively, which move in relative sliding contact with the up and down movement of the conveyance and supply device 7 when the entire reaping section B is driven up and down and when the handling depth is adjusted. It is formed by bending.

Further, as shown in FIGS. 1 and 6, a lifting device 3,
3. The cylindrical transmission cases 22, 22 are installed upright to the upper input transmission cases 21, 21, and are arranged along the tip movement locus of the locking pawl 23, which is a component of the ear locking and conveying device 7A. The starting end portion 24A of the conveying guide rod 24 is connected to the L-shaped input transmission case 21 of the pulling device 3 located on the side of the threshing feed chain 8 when the conveying and feeding device 7 is oscillated upward to adjust the handling depth. It is composed of a leaf spring that can be elastically displaced downward as it comes into contact with the blade.

With this configuration, the handling depth of the conveying and supplying device 7 can be adjusted to a large extent without being restricted by the electric input case 21 of the lifting device 3.

Incidentally, instead of forming the starting end portion 24A of the conveyance guide rod 24 from a leaf spring, as shown in FIG.
The guide rod main body 24B at the rear thereof is configured to be swingable only downwardly around the horizontal axis P, and this starting end portion 24A is connected to the guide rod main body 24B.
A torsion coil spring 25 may be provided to elastically urge the actuating position to be flush with 4B.

Further, as shown in FIG. 7, among the attachment parts 12A and 12B of the rubber cover 12 to the stock base conveyance guide cover 10 and the ear tip conveyance guide cover 11, screws 26 are formed on the ear tip side attachment part 12B.
The through hole 27 is made into a long hole extending in the front-rear direction to provide flexibility for allowing relative movement of the rubber cover 12 and the tip conveyance guide cover 11 in the front-rear direction within a certain range. In the case where such flexibility is provided, both the attachment parts 1 are
When the positions of 2A and 12B are different in the vertical direction and the front-back direction, by absorbing the positional deviation of both mounting parts 12A and 12B with the above-mentioned flexibility,
Due to this positional shift, especially the rubber cover 12
It is possible to avoid concentration of excessive tensile force on the notch at the center of the front end.

Note that the stock side mounting portion 12 of the rubber cover 12
The above-mentioned flexibility may be provided between A and the stock transport guide cover 10.

As shown in FIGS. 3 to 5, the handling depth adjustment device for the conveyance supply device 7 is an automatic handling depth adjustment device based on the detection results of a plurality of culm length detection sensors S attached to the pulling device 3 side. The depth control system is comprised of a depth control system and a manual depth control system using the operating lever 13, each of which is constructed as follows.

The automatic handling depth control system is configured to control the reaping frame 1.
5, a drive controller 30 is installed for vertically swinging the conveying and feeding device 7 to a predetermined handling depth position based on the detection result of the culm length detection sensor S;
An arm 33 is pivotally connected to a drive shaft 31 of this drive controller 30 and a connecting shaft 32 on the conveyance/supply device 7 side.
This arm 33 is rotatably fitted on the outside.
and a connecting member 34 fixed to the drive shaft 31 can be fixedly connected and disconnected via metal fittings 35 such as pins and bolts.

The manual handling depth control system is configured to control the reaping frame 1.
5, a supporting member 37 connected to the connecting shaft 32 on the side of the conveying and supplying device 7 via links 36, 36 is pivotally mounted so as to be vertically swingable, and the operating lever 13 is pivoted to the supporting member 37 in a horizontally swinging manner. an operation guide groove 38 that is movable and formed in the lever guide member 14;
A balance spring 39 is provided between the support member 37 and the reaping frame 15, and is pivoted in a state where it is biased in the direction of engagement with the locking portions 38a.
is intervening.

At the time of automatic handling depth adjustment, a plate member (not shown) is attached to cover the locking portions 38a of the operation guide groove 38 so that the operating lever 13 does not engage with the locking portions 38a. At the time of manual handling depth adjustment, the connection between the arm 33 and the connecting member 34 is released.

Further, the lever guide member 14 is attached to the support rods 40, 40 set upright from the reaping frame 15, and the grain culm tip receiving plate 17 is attached to the lever guide member 14 via L-shaped brackets 41, 41. It is installed.

Incidentally, the grain culm tip receiving plate 17 may be attached to any member as long as it is on the pre-harvesting treatment section B side.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the harvested grain culm conveyance and supply section of a combine harvester according to the present invention, and FIG. 1 is a side view of the front part of the combine, and FIGS. Its plan view, Figures 4 and 5 are a side view of the handling depth adjustment operating device and a rear view of its main parts;
FIG. 6 is a plan view of the front part of the conveying and supplying device, FIG. 7 is a partially cutaway side view showing the mounting structure of the second cover, and FIG. 8 is a side view of the main part showing another embodiment. DESCRIPTION OF SYMBOLS 1... Threshing section, 7... Conveyance supply device, 8... Threshing feed chain, 9... Inlet plate, 9a
... Lateral outer edge, 12... Cover, 14... Lever guide member, 16... Space, 17... Grain culm tip receiving plate, 17a... Lateral outer edge, 18, 1
9... Rising part, A... Main machine, B... Reaping part.

Claims (1)

[Scope of Claim for Utility Model Registration] The harvesting part B is connected to the machine A so as to be vertically swingable, and the handling depth can be adjusted by vertically swinging, and the harvested grain culm in the vertical position can be turned sideways. A device 7 for conveying and feeding the grain to the rear threshing section 1 while changing its posture is provided, and the tip of the conveyed grain culm, whose posture has been changed to the sideways posture, is extended forward from the threshing section 1 at the upper part of this conveying and feeding device 7. A cover 12 is provided to slide and guide on the entrance plate 9 of the facility, and from the lateral outer edge 9a of the entrance plate 9 on the side opposite to the side where the threshing feed chain 8 is present with respect to the conveyance supply device 7. In the structure of a harvested grain culm conveying and supplying section of a combine harvester, a lever guide member 14 for vertically swinging operation of the conveying and feeding device 7 is provided at an inward front position so as to be able to vertically swing together with the reaping section B. A space 16 that allows the lever guide member 14 to swing is cut out at a location corresponding to the front end corner of the inlet plate 9 located within the vertical swing range of the lever guide member 14. A structure for a harvested grain culm transport and supply section of a combine harvester, characterized in that a grain culm tip receiving plate 17 in a closed state extends from the transport and supply device 7 side. The lateral outer edge 9a of the inlet plate 9 and the lateral outer edge 1 of the grain culm tip receiving plate 17
7a, there are rising portions 18 and 1 that come into relative sliding contact as the conveying and supplying device 7 moves up and down, respectively.
The structure of the harvested grain culm conveying and supplying section of the combine according to claim 1, wherein 9 is formed by bending.