JPH0232024Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in technology for eliminating clogging in the threshing section of a combine harvester.

Conventionally, in order to eliminate a blockage that occurs in the threshing section, the cutting and harvesting operation is interrupted at the same time as the blockage occurs, and the upper cover of the handling barrel is opened, and the clogged grain culm is pulled out. There was a lot of work loss and efficiency was low, and in addition, it was extremely dangerous to insert your hand into the threshing section, which caused safety problems.

The present invention has been made to eliminate these conventional drawbacks, and aims to automatically eliminate clogging in the threshing section while continuing reaping and harvesting operations.

Embodiments of the present invention will be described below with reference to the drawings.

1 is a crawler type traveling machine, and a thresher 2 which will be described later
It is equipped with. Reference numeral 3 denotes a reaping and conveying device that can swing up and down, and is configured to cut the base of the standing grain culm raised by the raising device 4 and convey it to the threshing feed chain 5.

The threshing machine 2 has a handling barrel 6 whose rotational axis faces in the longitudinal direction of the machine body, which is installed on the front and rear plates of the threshing machine, and a crimp net 7 is stretched around the lower part of the handling barrel 6, so that the feed chain 5 A threshing section A is formed for the grain culms that are clamped and conveyed in the threshing section A. At the bottom of the threshing section A, a swinging sorting plate 8 for swinging and selecting the processed material leaking through the crimp net 7 and a winnowing machine are installed. (not shown) and a screw (not shown) for collecting grains, and is further provided with a clogging removal mechanism B for automatically removing clogging in the threshing section A. .

Next, regarding the clogging removal mechanism B, this will be disclosed based on FIG. 2. The upper cover 1 of the handling cylinder 6
0 is provided so as to be able to swing open and close around the front-back axis 12 along the upper edge of one side plate 11 on the side of the feed chain 5, and the free end side of the handling barrel upper cover 10 is wrapped around the upper side of the other side plate 13. Fold the upper cover 10 so that the upper cover 10
Each of the lap parts is made into a curved surface around the longitudinal axis 12 so that the lap parts of both 10 and 13 are always in surface contact regardless of the rocking of the side plates 13, and within the range of the lap with the side plate 13. A cylinder (an example of a driving device) 14 for swinging the handling cylinder upper cover 10 is provided to swing the handling cylinder 6.
By swinging the upper cover 10 in the opening direction while keeping it rotating to enlarge the space between the handling cylinder 6 and the cover 10, grain culms stuck in this space can be removed, or other Grain culms clogged in the space are introduced into the large space and later removed, so that the clogging of grain culms in the threshing part A can be eliminated.

Incidentally, regardless of the swinging of the upper cover 10, the upper cover 10 and the side plate 13 are always lapped together to prevent a gap from forming between them 10 and 13, thereby preventing dust and processed materials from scattering from the threshing section A. However, in place of the wrap configuration, the same effect can be expected by providing an elastically flexible sheet or bellows over the upper cover 10 and side plate 13.

On the other hand, through the bevel gear mechanism 15, the handling cylinder shaft 16
The shaft 17 that inputs the rotation of the shaft 17 and the input shaft 19 of the rotation speed detection sensor 18 are interlocked and connected by a rotation cable 20, and the load on the handling drum is detected based on the rotation speed of the handling drum shaft 16. The handling cylinder load detection device 21 is configured to detect the abnormal load state of the handling cylinder 6 when a blockage occurs in the threshing section A based on the handling cylinder shaft rotation speed below a setting, and The abnormal load detection signal from this load detection device 21 is input to the pulse control section 22, and the pulse control signal from this is input to the control valve V for the cylinder 14, so that the abnormal load is detected as a result of the detection of the abnormal load. Until the load is eliminated, the cylinder is operated intermittently to swing the handling barrel upper cover 10 in the opening direction, and when the abnormal load is eliminated as the cover 10 swings open, From this point on, the cover 10 is intermittently or continuously swung in the closing direction.

The cover 10 may be swung in the closing direction after a certain delay time from the time when the abnormal load is eliminated, or the cover 10 may be swung continuously in the opening direction.

As explained above, in the combine harvester of the present invention, the upper cover of the thresher is provided with the upper cover of the threshing machine so as to be able to swing up and down about the axis in the axial direction of the thresher, and the handler's load detection device detects abnormalities. It is characterized in that it is configured to input a load detection signal to the control section of the drive device to reversibly swing the upper cover of the handling cylinder in the opening direction, and the upper cover of the handling cylinder is configured to swing in the opening direction while the handling cylinder is rotated. By expanding the space between the handling drum and its upper cover, clogging of the grain culm in the threshing section can be easily eliminated, and the clogging in the threshing section can be easily resolved based on the abnormal load on the handling drum. Since the system detects this and automatically swings the upper cover of the handling cylinder in the opening direction in conjunction with this, there is no need to interrupt work and open the cover every time a clog occurs.
In other words, the clogging can be automatically cleared while the reaping and harvesting work continues, making it possible to work in an extremely efficient manner.

Furthermore, there is no need to insert one's hand into the threshing section, and safety has also been improved.

[Brief explanation of the drawing]

The drawings relate to an embodiment of the present invention; FIG. 1 is a side view of a combine harvester, and FIG. 2 is a sectional view of a threshing machine together with a block diagram for controlling the upper cover of the handling barrel. 2... Threshing machine, 6... Handling cylinder, 10... Handling cylinder upper cover, 14... Cylinder (drive device), 16...
... Handling cylinder shaft, 21 ... Threshing load detection device, 22 ...
control section.

Claims (1)

[Scope of Claim for Utility Model Registration] The upper cover of the threshing machine is provided so as to be able to swing up and down about the axis in the axial direction of the thresher by a drive device, and an abnormal load detection signal is generated by the handler torso load detection device. A combine harvester characterized in that the combine harvester is configured to input the following information into a control unit of the drive device to reversibly swing the handling barrel upper cover in the opening direction. The combine harvester according to claim 1, wherein the handling barrel upper cover is configured to be intermittently oscillated by pulse control of the drive device. The utility model registration claim 1 or 2 is characterized in that the handling cylinder load detection device is of a rotational speed detection type that detects an abnormal load state based on a decrease in the rotational speed of the handling cylinder shaft. Combines as described in Section.