JPS62155014A - Combine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application] The present invention relates to a combine harvester in which a reaping section is connected to the front part of a traveling vehicle body from which a threshing device can be seen, so that it can be raised and lowered. This invention relates to a technique for raising and lowering a reaping section while following the ground during work.

[Conventional technology]

Conventionally, as the second technology, for example,
As shown in Publication No. 26, a ground-contact type sensor is provided on the lower surface of the reaping part, and the sensor is mechanically linked to the hydraulic pulp of a hydraulic cylinder that raises and lowers the reaping part, thereby creating a reaping part of the ground-contact type sensor. In order to maintain a constant attitude towards
There is one in which the sensor and the hydraulic pulp are configured in a feedback operation linked structure, and an ultrasonic sensor is provided in the reaping section, and the reaping section is maintained at a constant level based on the signal from the nuclear ultrasonic sensor. Some have an electrical control structure to operate the hydraulic pulp (references not listed).

[The invention solves the problem 1. However, as mentioned above, if the control 4 is configured to automatically raise and lower the reaping section, the structure will become complicated, such as the need to provide a sensor and a linkage structure for the control mechanism. However, there is room for improvement in terms of structure and cost.

An object of the present invention is to construct an elevating structure for the reaping section to follow the ground as simply as possible through rational modification.

[Failure to solve the problem]

The uninvented feature is that a hydraulic cylinder is provided for raising and lowering the reaping part, and an accumulator is provided in the oil passage to the hydraulic cylinder, so that the reaping part can be raised and lowered at an angle of contact with the v1 surface.
In addition to configuring a ground following structure of 1 additional part, a pressure sensor is provided in the oil passage, and when the pressure sensor detects a predetermined pressure due to pressure increase of pressure oil due to glue oil contact, the hydraulic cylinder (to)
A pressure setting mechanism is provided to stop the pressure oil supply to set the level for the reaping section to follow the HR5! The operation and effect are as follows. [Operation] If the above characteristics are configured as shown in Fig. 1, the switch ση for setting the level μ of the reaping part (B) In the stirrup, a descending signal is issued from the control device 081 to the solenoid valve 0, and the sliding contact body (B) formed on the lower surface of the reaping part (B)
) descends until it makes relatively strong contact with the ground (G). In other words, as shown in Figure 2, the output signal of the Schmitt circuit that converts the 1 and 1 from the pressure sensor output is (OFF
), the reaping section (B) is lowered until the switch is made.

Next, when the Schmitt circuit (B) is switched to (OFF), the control device m (g) intermittently sends a rising signal to the solenoid valve O9 so that the reaping part (B) is raised. When the signal from the Schmitt circuit M is turned ON again, the lifting operation of the reaping section (B) is stopped. still,
In this stopped state, the level of the reaping part (B) is set so that the sliding contact opening lightly contacts the ground (G).

When working with the level of the reaping part (B) set in this way, it is necessary to install an rj
- Since the reaping part (B) is elastically supported by the action of the humulator α, the reaping part (B) follows the ground by sliding contact with the Tip rlfl without driving the hydraulic cylinder αυ. There is a lifting and lowering process that takes place.

The graph shown in FIG. 2 shows the pressure change in the oil passage α3 after the switch αη is turned on and the pressure (
Po) is the value when the cutting part (B) is completely supported by the ground (G), and pressure (Pl) is the value when the sliding part qz is in relatively strong contact with the ground (C). value, pressure (P
l) is the value when the sliding body α4 is in light contact with the ground, and pressure (P8) is the value at the boundary where the sliding body α4 is separated from the ground (G). (P+) and pressure (Pl
) is the Schmidt circuit (
This is to match the hysteresis region where JQ shadow is formed.

In other words, the pressure sensor adjusts the predetermined pressure to 8 by increasing the pressure in the oil passage.
By configuring it so that the raising of the reaping part is stopped when the R is released, a solenoid valve is activated every time the pressure is sampled, like a structure that detects hydraulic pressure while lowering the reaping part. There is no need to perform a closing operation, and since the setting level of the reaping section is relatively low, the raising operation time for reaping i6 can be shortened.

[Effect of excuse]

Therefore, by rationally combining a pressure sensor, a pressure setting mechanism, and an accumulator, the level of the reaping section can be set relatively quickly, and the reaping section can smoothly move up and down while following the ground. The elevating structure was constructed relatively easily.

〔Example〕

Hereinafter, embodiments of the invention will be described with reference to the drawings.

As shown in Figure 3, there is a grain tank (1), a grain tank (
A full-culm input type combine harvester is constructed by connecting the reaping part θ3) to the front part of a vehicle body fA+ which is equipped with a car body fA+ which is equipped with a car body fA+ which is mounted with a car body fA+ which runs on left and right crawler traveling devices (3).

The reaping section (B) includes a reel (4) for scraping the planted shell culm (B)), and a clipper-type cutting section 5 for cutting the planted shell culm (B)). ', (5), a conveyor (B) that sends the culm from the reaping device (5) to the rear, an auger (7) that brings the culm from the conveyor (B) to approximately the left and right center of the reaping section (+3). )
, a feeding device (B) for feeding the grain culm from the auger (7) to the handling chamber (la) of the threshing device (1).

In addition, the supply device [(B) is the front and rear wheels (Ba), (B
b) and an endless band (Bc) wound around the front and rear wheels (Ba) and (Bb), which is driven by transmitting power from between the running vehicle bodies to the transport body (Bb) of the ridge. This effect is transmitted to the support shaft (9) of the nucleus ring (Ba) through the front wheel (Ba), and furthermore, the power applied to this support 5till (9) causes the reel (4) to move. , conveyor (B),
Oh,'/ (7) is driven, and the reaping device (5
) is configured such that the drive system (not shown) is configured to reciprocate, and the support -〇〇 of the wheel body (Bb) of the coal section of the supply device w (B) has both ends connected to the traveling vehicle body. The reaping part (B) is supported by the support 1i by the operation of the hydraulic cylinder 0, which is freely rotatably supported between the traveling lower body iAl and the reaping device 11(5).
It is configured to swing up and down around the room.

In this combine harvester, the reaping section (B) is made to follow the ground (G) by sliding 4 on the ground (G).
B) is configured to be raised and lowered.

That is, the lower surface of the reaping part (B) is provided with a sliding contact area made of a wedge-shaped member, and as shown in FIG. 1, an oil passage (J4 has an accumulator a → By providing this, during harvesting work, simply by setting the reaping part (B) to a predetermined level VC in advance, the reaping part (ρ) can be raised and lowered according to the ground (G) due to the strong support action of the accumulator circle. is carried out.

In addition, before the start of 10 days, a pressure sensor a5 is installed to detect the pressure in the oil passage C13 to set the pressure at a predetermined level, and a signal from the pressure sensor αG is set to a predetermined level. aF in front of the control device to which the signal is input via l1R1 path α0 and the signal from Nuitch αη is input.
Further, a signal path is formed in which a solenoid valve aI, which controls the hydraulic cylinder OD, is operated by a signal from the control device 0.

When starting the U'I cicada harvesting operation, the cutting section (B) moves the coal that has descended at a relatively high speed, and the coal that has been lowered at a relatively high speed, and rises slightly at a slow speed to a predetermined position. It is set to Repe p.

In addition, since the reaping part (B) is raised and lowered by contact with the ground (G) in this way, the hydraulic pump (1) that supplies pressure oil to the solenoid valve G1 is operated when the solenoid valve G1 is operated. The electric motor that drives the hydraulic bonder 1 (A) is connected to the solenoid valve Q (I+) from the control device (G) only when
A system is provided for controlling the operation of the electric motor so that it is supplied only when a control signal is issued to the motor.

In addition, the Schmidt circuit q and the control device (to) are referred to as pressure setting m * (C), and as shown in FIG. An input signal system is also formed so that the code number is input to the control device Q8).

[Another example]

In addition to the embodiments described above, the present invention includes, for example, a control device configured with a microprocessor, and based on signals from a pressure sensor,
It is also possible to set a program to set the level of the reaping section as described in tm, and perform the above-mentioned Schmidt circuit t'4' for short, or by incorporating a diaphragm or the like in the pressure sensor It is also acceptable to construct it using something that generates hinutericine from a mechanical structure.

[Brief explanation of drawings]

The drawings show an embodiment of the combine harvester according to Honmei, Fig. 1 is a block diagram showing the lifting control system of the reaping section, Fig. 2 is a graph showing pressure changes in the oil passage with respect to the hydraulic cylinder, and Fig. 3 is a straight line diagram. It is a partially cutaway side view showing the structure of the front part of the fPL type combine harvester. (1)...Threshing vi place, 01)...mark/hydraulic cylinder, Q3...MIL'4, u4)...
・・Accumulator, αυ・・River/pressure sensor, [Al
... Regular vehicle body, (B) ... Reaping section, (
C)...Pressure setting mechanism.

Claims (1)

[Claims] For the front part of the traveling vehicle body (A) equipped with the threshing device (1),
A combine harvester in which a reaping part (B) is connected to the reaping part (B) so that it can be raised and lowered, and a hydraulic cylinder (11) that raises and lowers the reaping part (B).
and an oil passage (13) to the hydraulic cylinder (11).
An accumulator (14) is provided in the oil passage (13) to configure a ground following structure of the reaping part (B) so that the reaping part (B) is raised and lowered by contact with the ground, and a pressure sensor (
15) and a pressure setting mechanism ( C), and is configured to set a level for ground following of the reaping section (B).