JPS6021942Y2 - combine - Google Patents

Description

[Detailed description of the invention] The present invention is configured to transport the reaped husks using both conveyance devices, one on the stock side and one on the head side, and a contact sensor for detecting the presence or absence of the husks is provided during the conveyance. Regarding combine harvesters.

In this type of combine harvester, at the starting end of the conveyance device or at a bend in the conveyance path, at the turning point of the locking claw of the head-side locking conveyance device, on the tip side of the culm or near the tip of the locking claw. Because it is rotated while being locked to the stem, the circumferential speed of the tip side is higher than that of the stock side, and the heavier tip side tends to lead due to its inertia.Especially in the case of short culms, the tip sides are adjacent to each other. There was a problem in that the grains slipped between the locking pawls and entered between the preceding locking pawls, causing disturbances in the conveying posture and deteriorating the threshing performance.

In view of the above points, the present invention suppresses the advance of the tip side at the rotation point of the locking claw with a simple structure by effectively utilizing the contact sensor originally provided in the above-mentioned type of combine harvester. The purpose is to prevent disturbances in the transport posture.

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

A lifting device 1 that pulls up the planted grain culms in the field, a reaping device 2 that reaps the raised grain culms, and a horizontal conveying section 3 that transports the cut grain culms to one side of the machine body while merging them. A vertical conveying section 5 that changes its posture to a nearly horizontal position while conveying it rearward and upward and delivers it to the feed chain 4, a threshing section 6 that threshes and sorts the husks while conveying them while being held between the feed chain 4, and threshing. A waste straw processing section 7 for discharging straw into a field with or without shredding the straw is sequentially connected to a traveling machine equipped with a crawler traveling device 8 and a control section 9. The combine harvester is configured to continuously harvest planted culms in the field as it travels.

As shown in FIG. 2, the horizontal conveyance section 3 is composed of a stock end locking conveyance device 10 using a chain with a locking claw and a head side locking conveyance device 11 that extends across the vertical conveyance section 5, The structure is such that the stem side and the tip side of the cut husk are conveyed while being locked.

The vertical conveyance section 5 includes the tip side locking and conveying device 11, a part of the stock side locking and conveying device 10, a first clamping and conveying device 12a that clamps and conveys the stock side of the culm, and auxiliary conveyance. and a second holding and conveying device 12b.

The first clamping and conveying device 12a has the reaping frame 13,
It is pivotally connected to be able to swing freely around the horizontal axis X on the conveyance start end side, and is also interlocked and connected to a handling depth adjustment lever 15 disposed in the control section 9 via a link mechanism 14. 15, the first clamping and conveying device 12a is swung, and the position where the second clamping and conveying device 12b clamps the stock culm with respect to the culm is changed in transferring the culm to the second clamping and conveying device 12b; It is configured so that the depth of treatment can be adjusted.

As shown in FIG. 3, during the conveyance of the second clamping and conveying device 12b, the culm is always biased to cross the culm conveyance path, and the culm is moved in the culm length direction of the conveyed culm. Rocking sensors S1 and S2 are provided in two stages, upper and lower, and limit switches I, L2 are attached to each of them, the first limit switch L□ is a normally open type, and the second limit switch L2 is a normally closed type, They are connected in parallel to each other in a power supply circuit C equipped with an alarm device 16, and even if the tip of the tip of the conveying shell comes off from between the rain sensor and the rain sensor 82 either above or below, the alarm device 16 is activated. It is designed to encourage depth adjustment.

It is positioned corresponding to the transition point from the horizontal conveying section 3 to the vertical conveying section 5, that is, the point where the locking claws 17 of the ear side locking and conveying device 11 rotate, as shown in FIG. As shown in FIG.
It is always biased to cross the culm transport path, and when viewed from the side, the tip-side locking and transporting device 11 and the stock-side locking and transporting device 10
A swinging contact sensor S3 is provided in between and at a position close to the tip-side locking and conveying device 11, and is swung outward as the locking claws 17 rotate, increasing the circumferential speed. The contact sensor S3 is oscillated while applying resistance by contacting the tip side of the culm that is being conveyed, and the third limit switch L attached to the contact sensor S3 is actuated.

The third limit switch L is connected in series with the power supply circuit C, and is configured to start or stop the power supply circuit C in accordance with the detection of the presence or absence of a culm by the contact sensor S3.

The present invention is also applicable to a type in which the first clamping and conveying device 12a is extended to a position corresponding to the lower part of the tip side locking and conveying device 11. The base-side locking and conveying device 10 and the first and second clamping and conveying devices 12a and 12b are collectively referred to as a stock-side conveying device 19.

The above is an embodiment of the present invention, and the present invention has the following structural features.

That is, in the combine harvester described at the beginning of the detailed description, the contact sensor S3 is connected to the tip locking and conveying device 1.
The first locking pawl 17 is characterized by being arranged within the vertical interval width of the two conveying devices 19, 11 at the rotation location and close to the tip conveying device 11 side.

In other words, by effectively utilizing the contact sensor S3 originally provided and devising the arrangement position of the contact sensor S3, the locking claws 17 of the tip conveying device 11...
The detection resistance of the contact sensor S3 is added to the tip side, which tends to take the lead as it rotates, making it possible to prevent the tip side from taking the lead.This is an extremely simple configuration that only requires the rational arrangement of the sensor S3. As a result, it has become possible to effectively prevent disturbances in the conveying posture relative to the shell culm.

[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 a plan view of main parts, and Figs. 3 and 4 are cross sections taken along lines mm and IV-IV in Fig. 2. FIG. 5 is a circuit diagram.

Claims (1)

[Scope of utility model registration request] A combine harvester configured to transport the reaped culm by both conveyance devices 19.11 for transporting on the stock side and locking and conveying on the tip side, and provided with a contact sensor S3 for detecting the presence or absence of the culm in the middle of the conveyance, the combine harvester comprising: The contact sensor S3 is placed within the vertical spacing width of both the conveying devices 19.11 at the rotating location and close to the ear tip conveying device 11 side. A combine that is placed in place.