JPH0132850Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detection device for automatic handling depth adjustment in a combine harvester.

In other words, from the rear of the reaping section where both raising cases facing each other are installed diagonally in parallel, to the feed chain of the threshing section, it is automatically tilted by detection by a rod sensor that is activated when it comes into contact with the tip of the grain culm. Conventionally, in combine harvesters that are constructed with a diagonally installed vertical conveying chain that can be changed and the handling depth can be adjusted, it has been common to connect both hoisting devices with a gate, or to connect them with a transmission case for reinforcement. However, recently some models have appeared in which the lifting device is firmly supported by the lower transmission case and the gate is removed, but the handling depth detection sensor is still installed at the entrance of the threshing section or at the top of the conveyor. A structure was adopted in which it was only fixed to the The present invention has found a new structure in which the pulling gate and the sensor box are integrated, and the threshing section is designed to prevent grain culms and weeds from getting caught in the rod sensor and causing malfunction. It can be installed well away from the supply port side, and it can also be constructed so that the double-raised case side that supports the rod sensor can be reinforced, and depending on the configuration, a protective frame or The present invention is provided so that it can be used as an assist bar for gripping and has a compact structure so that it can be suitably implemented.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of the combine harvester. Above the machine stand 8 supported by the crawler 7, there is a threshing section B equipped with a feed chain 2, a clamping rod 9, a handling barrel 10, a supply port 6, a supply plate 11, etc. The threshing section B
A reaping section A consisting of each grass dividing board 12, both parallel raising cases 1a and 1b, a cutting blade 13, etc. is installed in front of the structure so as to be movable up and down by a hydraulic cylinder 14. Configure similarly.

Further, from the rear of the reaping section A to the lower side of the starting end of the feed chain 2 of the threshing section B, a vertical conveyance chain 4 is installed diagonally to convey and raise the culm base side of the grain culm. A sensor 3a made of rod is installed on the transmission case 15 side so as to be able to change the inclination by rotating around a fulcrum O, and the sensor 3a is made of rod and is in contact with the tip side of the grain culm.
The vertical conveyance chain 4 is automatically moved so that the handling depth can be adjusted by activating a solenoid etc. by the detection operation of 3b.
It is constructed in the same way as the conventional structure, with the inclination adjustable.

Reference numerals 5a and 5b denote support rods made of pipes, and the front parts of both support rods 5a and 5b, which are formed to tilt forward, are attached to a support pipe section 1 that is installed on the upper back side of both lifting cases 1a and 1b.
6 and 16 in a slidable manner, respectively, and slotted into the elongated hole 1.
7, 17 and set bolts 18, 18 are installed so that the vertical movement of both support rods 5a, 5b can be adjusted. The rear parts of the support rods 5a and 5b are bent at right angles in opposite directions, and both bent support rods 5 are formed.
Parallel support plate 19 fixed to the rear end of a, 5b
A sensor case C is integrally fixed between a and 19b, and both support rods 5a and 5b and sensor case C
is integrally formed into a planar U-shape and becomes a rigid body, and is installed and constructed so that it can be connected to both the lifting cases 1a and 1b.

Further, both switches S are installed inside the sensor case C, and the lower part of the sensor case C faces the front of the supply port 6, and the lower part approaches the upper side of the supply plate 11. Sensors 3a, 3b made of both rods are installed vertically, and when the tip side of the grain culm supplied to the feed port 6 side comes into contact with the sensors 3a, 3b, the sensors 3a, 3b rotate as in the conventional type, and the switch S is turned on. is installed and configured so that the vertical conveyance chain 4 automatically changes its inclination when activated.

Therefore, both sensors 3a and 3b, which are supported from both lifting cases 1a and 1b side via support rods 5a and 5b, are vertically installed apart from the supply port 6 side of threshing section B. Therefore, unlike the conventional type, grain culms and weeds do not get caught between the sensors 3a, 3b and the supply port, which can cause malfunctions.

Note that the long holes 17, 17 and the set bolt 1
When the support rods 5a, 5b are vertically adjusted by the levers 8, 18, the sensors 3a, 3b can be vertically adjusted, and the set positions can be adjusted.

In addition, support rods 5a, 5b and sensor case C
By making the rigid body straddle both lifting cases 1a and 1b, a reinforced structure can be created, and the supporting rod 5
If a and 5b serve as a protective frame, or if support rods 5a and 5b are located near the driver's seat, they can be used as assist bars for gripping.

In this way, the present invention automatically detects the feed chain from the rear of the reaping section, which has double-drawing cases arranged diagonally in parallel at the front, to the feed chain of the threshing section, by detecting the sensor made of a rod that comes into contact with the tip of the grain culm. In a combine that is constructed with a diagonally installed vertical conveying chain that can change the inclination and adjust the handling depth, the support rod that connects the tops of both hoisting cases is extended from the back of the left and right hoisting cases to the rear grain culm supply port side. At the same time, the rear parts of both support rods were bent inward and the sensor case was fixed between the support rods to form a portal-shaped lifting gate when viewed from the front. It is constructed integrally via a support rod, and the sensor can be installed vertically away from the supply port of the threshing section.
It is possible to effectively prevent malfunctions caused by grain culms and weeds getting caught between the sensor and the supply port as in the past, and in addition, both sides of the case are reinforced by the support rod side that supports the sensor. Depending on the mounting structure of the support rod, it can be used effectively as a protective frame or as an assist bar for gripping, and has the advantage of being compact and suitable for implementation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the combine, Fig. 2 is a front view of the threshing section, Fig. 3 is a side view of the main part, Fig. 4 is a plan view of the main part, and Fig. 4 is a plan view of the main part. Figure 5 shows a front view of the main parts. 1a, 1b...Lifting case, A...Reaping part,
B... Threshing department, 2... Feed chain, 3a, 3
b...Sensor, 4...Vertical conveyance chain, 5a, 5
b... Support rod, 6... Supply port, S... Switch, C
...sensor case.

Claims (1)

[Scope of utility model registration request] The vertical conveyance chain is automatically moved from the rear of the reaping section, which has lifting cases facing each other at the front, to the feed chain of the threshing section, through the feed chain of the threshing section. In a combine harvester that is configured to change the inclination and adjust the handling depth, the support rods that connect the tops of the two drawer cases are extended from the back of the left and right drawer cases to the rear grain supply port side, and the rear of both support rods is A detection device for automatic handling depth adjustment, characterized in that a sensor case is bent inward and fixed between the support rods to form a gate-shaped pulling gate when viewed from the front.