JPS60184319A - Reaming harvester - 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] The present invention relates to a reaping/harvesting machine such as a combine harvester or a binder, and more specifically, it is capable of changing the traveling speed without requiring operation of the main clutch, and (1) is capable of shifting the traveling gear to neutral during work. This invention relates to an improvement in which when the machine is stopped, the reaping operation is automatically stopped to avoid troubles such as pulling down of crops.

A hydrostatic continuously variable transmission (
H, S, T, ) outputs are branched to the traveling transmission system and the reaping part transmission system, and the transmission is operated in neutral so that both the traveling transmission system and the reaping part transmission system are stopped. There are %.

In the above conventional technology, because the output from the transmission is branched into the traveling transmission system and the reaping transmission system, the traveling speed and the reaping operation speed are synchronized, and when traveling at extremely low speeds or high speeds, the reaping There was an issue where the city's operating speed would be extremely slow or high. In addition, hydrostatic continuously variable transmissions have lower transmission efficiency than general gear transmissions, which poses a problem in practical use of T/I in models equipped with relatively low-output engines.

This invention has been made with attention to the above-mentioned circumstances, and it performs a traveling gear shift (2) that does not require manual clutch operation with high transmission efficiency, and performs a cutting fX drive that is not related to the traveling transmission system. Another object of the present invention is to make it possible to automatically stop the reaping section when traveling stops, by effectively utilizing the configuration of the transmission to ensure that the reaping section can be automatically stopped with light operation.

The characteristic structure of the present invention for achieving the above object is to selectively operate a plurality of hydraulic clutches for gear shifting using pressure oil supplied from a control valve, thereby providing hydraulic pressure for shifting gears in a plurality of stages. In a reaping harvester equipped with an operable traveling transmission and a reaping latch that is interposed in a reaping transmission front thread independent of a constant transmission system and can be manually operated to turn on or off, the reaping is performed by supplying pressure oil. The hydraulic actuator forcibly cutting the latch is turned on in all stages, and when the control valve is in a neutral state, the pressure oil supplied to this valve is guided to the hydraulic actuator.

According to the above characteristic configuration, the transmission of data can be performed only by switching the control valve.
In addition to highly efficient gear shifting, the reaping section is always driven at an appropriate speed regardless of the traveling speed, and the reaping section is forcibly driven by hydraulic pressure WXdJ when the transmission is operated in neutral. It will be severed.

Therefore, although the reaping latch is forcibly turned off and activated when the traveling gear is operated in neutral, the only human operating force required is the switching operation force of the control valve, and with a light operation, it is possible to effectively stop the reaping section when traveling stops. Now I can do it.

Hereinafter, embodiments of the present invention will be described based on the drawings.

Figure 1 shows a combine harvester as an example of a reaping machine.
A traveling vehicle body (3) equipped with a pair of left and right crawler traveling devices i1)', +11 and a threshing device (2)
) in front of S, a pulling device (4)..., a reaping device (5),
A harvested grain culm conveying device (6) and a fully equipped reaping section (7) are connected to each other so as to be able to move up and down.

FIG. 2 does not schematically show the transmission system, and the output from the engine (8) mounted on the traveling vehicle body (3) is the threshing device t ts.
The transmission system is divided into a transmission system for the ++ and a transmission system for traveling and driving the reaping section. The latter branch output is connected to the tension clutch (11) on the input shaft (lO) of the traveling transmission case (9).
After being transmitted through the belt, it is further branched into a traveling system and a reaping section transmission system.

In other words, -NS//i of the power of the input shaft (IO) is taken out to the PTO shaft tea via the high and low gear transmission Oa, and from there via the tension clutch type reaping clutch σ The belt is transmitted to the input shaft σ5) of the reaping section (7). In addition, the mission case input shaft (l
O) assistance -ma, 8-speed auxiliary gear transmission, forward 8
It is designed to be transmitted to the left and right axles gn) and (1@) via the main gear transmission 0η of the 1st reverse gear, the steering clutch end, and the DI.

The main gear transmission (171 is a multi-disc hydraulic clutch (20 m) in the transmission system of a pair of regular gears forming each gear stage.

(gOb), (20c), (20d) k dogs incorporated,
The hydraulic clutches (20a), (20b) are configured as a hydraulically operated traveling transmission that selectively supplies pressure oil to perform transmission at a desired gear position.

Then, when operating the 1111 gear transmissions of the Karitori Toden front system and the auxiliary gear transmission u61 of the traveling system //i, the tension clutch (Il) is operated, but the main gear transmission Q7) is operated. This is done by only operating the control valve υ incorporated in the clutch operating hydraulic circuit shown in FIG.

In other words, control valve mouth) is (F 1), (F !), (y
s ) and (R) positions, the hydraulic clutch for 1 forward speed (gOa), the hydraulic clutch for 2nd forward speed (WOb), and the hydraulic clutch for 8th forward speed (20c
) and the reverse hydraulic clutch (GOD) to obtain a gear shift state of the transmission system in the clutch engaged P state, and switch the control valve (21) to the (mowing position). Full hydraulic clutch (20m), (20b) fist
By removing the pressure oil and cutting off the transmission, a neutral stopping state can be achieved. Furthermore, an accumulator is connected to the primary side of the control valve υ to suppress a sudden increase in clutch operating pressure when the gear is shifted from a neutral position, thereby alleviating the shock of starting. .

In addition, @8) is the main relief valve that sets the clutch pressure, and country is the low pressure relief valve that obtains the lubricating oil supply pressure to each hydraulic clutch (20m).

The present invention further adds the following configuration to the above configuration.

As shown in FIG. 4, the tension arm I'23 of the reaping latch (141) is connected to the reaping latch lever via the spring and the link mechanism, and the (-) ) position, the clutch engaged state is (
At position b), the clutch disengaged state is maintained very stably.
Further, the tension arm (4) is linked to the hydraulic cylinder (4) attached to the transmission case (9) via the rod η, which works only for pushing down, and the balance arm (C), and this hydraulic cylinder (B) - The tension arm is forcibly operated toward the clutch release side by the upward extension operation accompanying the supply of pressure oil.Then, as shown in FIG. Valve e1)
When the valve 2υ is in the neutral position (F), pressure oil is supplied to the hydraulic cylinder (29), and the shift position (Fl) is connected to
), (FCFs), and (R), the four hydraulic cylinders (29) are passed through the tank, and are configured to be compressed by internal springs.

Therefore, the reaping clutch lever is in the clutch engaged position (-
) When the control valve (21) is switched to the neutral position (N) and the machine is stopped during reaping work with the control valve (21) switched to the neutral position (N) and the machine is stopped, the hydraulic cylinder head is extended and the tension arm (23) is connected to the spring (24). The reaping latch (7) is automatically cut off by forcing the clutch to disengage.Next, when the reaping latch (7) is switched to the forward L speed position (F1) or the reverse position (R), the reaping latch I is activated again. is returned to the engaged state by the spring (to). Also, when the reaping latch lever (c) is operated to the cut position (b), the tension arm @ moves downward and forward regardless of the rod position η.

Incidentally, the pulling device (4) is equipped with a culm length detection sensor (s l
).

(52) -- is provided, and the attitude of the harvesting rod photographing and transmitting device (6) is changed based on the detection result to perform self-help control of the handling depth, and at the starting end of the conveying device (6). In the case where the automatic handling depth control is performed only when the grain culm presence/absence sensor (50) detects the presence of a husk, the reaping clutch H is engaged as described above even when the grain culm presence/absence sensor (50) is moving backwards, and the reaping is continued. Since the culm is being transported, the sensor (SO) does not detect the culm, the automatic handling depth control is stopped, and the culm length detection sensor (S
Even if all o) and - are removed from the culm and the shortest rod is detected, the handling depth adjustment operation # will not be performed, and the previous handling depth adjustment state will be restored when the culm is introduced with the next advance. control will be resumed.

In addition, the grain culm presence/absence sensor (So) is provided outside the conveying device in the lower part of the lifting device (4), and the grain culm immediately detaches from the sensor (So) as it moves backward. , for those without automatic pumping depth control, as shown in Figure 5, the control valve) is set to the neutral position (N) and the reverse position (
R), it is also possible to suddenly supply pressure oil to the hydraulic cylinder 4 for disengaging the reaping clutch, and in this way, when switching rapidly from forward to reverse, the pressure oil is supplied to the hydraulic cylinder 4 for reaping clutch (20d). Pressure oil is supplied to the reaping latch cutting hydraulic cylinder I29) at the same time, and the increase in the hydraulic pressure of the hydraulic clutch (20d) is suppressed. This increases the delay in the start time of backward movement, and reduces the impact of the aircraft's forward lurch.

Incidentally, instead of the hydraulic cylinder 9) for disengaging the reaping clutch, a hydraulic motor capable of forward and reverse operation may be used, and these are referred to as full hydraulic actuators.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping/harvesting machine according to the present invention, Fig. 1 is an overall side view of the combine, Fig. 2 is a schematic configuration diagram of the transmission line, Fig. 8 is a hydraulic circuit diagram, and Fig. 'f14 is a reaping machine. FIG. 5, a side view of the clutch operating section, is a hydraulic circuit diagram of another embodiment. (la), (20b)......Hydraulic clutch for gear change, control valve, 0x0...reaping latch, 4...hydraulic actuator. Agent Patent Attorney Ken Kitamura Diagram 5

Claims (1)

[Claims] Multiple gear shifting hydraulic clutches (20a), (20b)
・-A hydraulically operated travel transmission device that selectively operates the drive gears by supplying pressure oil from a control valve to perform multi-stage gear shifting, and a Karitori Toden thread that is independent of the travel transmission system. A reaping/harvesting machine equipped with a reaping clutch I which can be operated manually and manually, is provided with a hydraulic actuator PA for forcibly operating the reaping latch 04 by controlling the pressure oil supply operation, and the control valve A reaping and collecting WL machine configured to guide pressure oil supplied to this valve train to the hydraulic actuator (2) υ when the stem is in a neutral state.