JPS5851723B2 - combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a technology for automatically controlling the handling depth of a combine harvester with the aim of stabilizing the threshing load.

Generally, if the harvested husk culm to be transported and supplied to the threshing section is long and has a large transport volume, a large load will be applied to the threshing section, and if the harvested husk culm is long and the transport volume is small, Alternatively, in the case of a short culm, the load acting on the threshing section is relatively small regardless of the conveyance volume.

The present invention makes it possible to control the threshing load by making full use of the correlation between the length and volume of the culm and the volume and the threshing load, and by devising the mounting position of one culm volume detection sensor. This enables effective detection and enables efficient threshing work.

First, embodiments of the present invention will be described in detail based on the drawings.

Figure 1 shows a clipper-type cutting blade 4 and a pulling device 5 that engages with the tip of a plurality of cut husk culms near the ground in front of the cutting blade 4, and pulls and transports it upward to the rear of the machine. The stock base of the harvested culm is held between the reaping joint and the threshing section 1 mounted at the rear of the machine, and is transferred to the feed chain 7 conveyance starting end of the threshing section 1. The stock head clamping and conveying device 8 that transports and supplies engages with the tip of the harvested husk culm, and changes its posture to the horizontally narrow posture through the cooperation of the stock head clamping and conveying device 8, which carries and supplies the harvested husk, while threshing. A tip locking conveyance device 9 for conveying and supplying the culm is installed in the culm supply port 1a of the section 1, and both conveyance devices 8 and 9 are vertically swung around the horizontal axis 10 near the conveyance end portion. (to adjust the handling depth of the harvested husk in the threshing section 1). A U-shaped connection connects the transport chain 9A having a plurality of locking transport claws 9a, which are constituent members of the locking and transporting device 9, at the center of the cut culm transport path A. As shown in FIGS. 2 and 3, a Q protrusion amount is applied to the cut culm conveyance path A at the location where the tip of the culm corresponding to the long culm of the member 11 and the stem portion near it pass respectively. Two types of C culm volume detection sensors 2 and 2A with different values are provided, and the detection results of these rain detection sensors 2 and 2 are transmitted through a fluid pressure cylinder 3A that vertically swings both the conveyance devices 8 and 9. The threshing section 1
The handling depth is inputted to an automatic handling depth control device 3 that automatically adjusts the handling depth of the reaped husk at When both the sensors 2 and 2 people are activated, the depth is swung in a direction to make it shallower (shallow treatment direction), and when both the detection sensors 2 and 2 people are not activated, the depth is increased to a deeper level. The structure is such that it can be swung in the direction of deep handling (deep handling direction).

Next, the operation of the above configuration will be explained.

■When the transportation volume of the harvested culm is small, (a) When only the rain detection sensor 2A, which has a large protrusion, among the rain detection sensors 2 and 2 is activated, the culm length of the harvested culm is different from that of the other rain detection sensors. Even if the detection sensor is 2 or more, the threshing section 1
The handling depth is not adjusted because the load on it is small.

In other words, it is an appropriate method.

(See Figure 4) (b) If both the rain detection sensors 2 and 2 do not operate, the rain detection is too shallow, so adjust the rain detection depth in the direction of deep detection.

(Refer to Fig. 4) ■ When the volume of conveyance of cut husk is large, (a) When both the rain detection sensors 2 and 2 persons are activated, the load on the threshing section 1 is large, so Adjust in the handling direction.

(Refer to Figure 4) (B) When only the rain detection sensor 2A, which has a large protrusion among the two rain detection sensors, is activated, even if the volume of the reaped husk is small, the threshing section The handling depth is not adjusted because the load is too large for 1.

, in other words, it is considered to be an appropriate measure.

(Refer to Fig. 5) ←→ If both of the rain detection sensors 2 and 2 do not operate, the rain detection is too shallow, so adjust the rain detection depth in the direction of deeper detection.

(Refer to Figure 4) In this way, it is possible to appropriately adjust the handling depth according to the transport volume of the cut husk culm and the culm length 1.

In summary, the combine harvester according to the present invention has automatic handling depth that controls the handling depth in the threshing section based on culm length detection! + A combine harvester equipped with a leg device 3, and a husk culm volume detection sensor 2 is installed at a location where the tips of the husk culms corresponding to long culms pass through in the reaped husk culm conveyance path A to the threshing section 1. and input the detection result of this sensor 2 into the automatic handling depth control device 3, so that when the culm volume is small, the handling depth control is not executed even if the culm is long. However, when the culm volume detection sensor 2 detects the husk, it is determined that the culm is long and has a large transport volume, and a large load is applied to the threshing section 1. If the culm volume detection sensor 2 does not detect, the culm is long and the transport volume is small, or the culm is short regardless of the volume and the threshing section 1
It is determined that the load acting on the is comparatively large.

In this way, by installing one shell culm volume detection sensor 2, it is possible to detect a value close to the threshing load from the culm length and conveyance volume of the reaped shell culm with a simple adjustment to the position. It has now become possible to effectively utilize it as a detection means when automatically controlling the applied load.

[Brief explanation of the drawing]

The drawings show an embodiment of the combine harvester according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is an enlarged front view of the main parts, Fig. 3 is a schematic mechanical diagram of the main parts, and Fig. 4 FIGS. 5A to 5C are diagrams of the shell culm detection operation, respectively. 1... Threshing section, 2... ° Stem culm volume detection sensor, 3... Automatic handling depth control device, A...
...Reaped husk transportation route.

Claims (1)

[Claims] 1 A combine harvester equipped with an automatic handling depth control device 3 that controls the handling depth in the threshing section based on culm length detection, and in which the cut husk culm conveying path A to the threshing section 1 corresponds to a long culm. A culm volume detection sensor 2 is provided at a location where the tip of the culm passes through, and the detection result of this sensor 2 is input to the automatic handling depth control device 3. When the culm volume is small, a long culm is used. A combine harvester configured such that the handling depth control is not executed even if the handle depth control is performed.