JPS5851716Y2 - Combine harvester reaping clutch automatic disconnection device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reaping latch automatic cutting device for a combine harvester.

Generally, when raising and raising the reaping device at the end of reaping in combine harvester operation, it is necessary to disconnect the reaping latch, and when the clutch is disconnected via the reaping latch lever, the final reaped husk is in the threshing section. When the uke was inherited,
In other words, it is necessary to match the point in time when no cut husk culms are present in the pre-processing section of the lower conveyance device or the vertical conveyance device (or the lower conveyance device).

However, for beginners who are not familiar with combine harvester operation, it is relatively difficult to turn off the reaping latch lever at such a point, especially when the final reaped culm is threshed in a combine with a single lifting section. If the reaping latch lever is turned off and the combine turning operation is performed when the catch has not yet been joined to the feed chain in the feed chain, the automatic handling depth adjustment device will malfunction due to the disturbance of the joint posture of the catch. In some cases, there were drawbacks that resulted in scandals such as mishandling.

Therefore, in the present invention, a solenoid operating rod is connected to the reaping latch lever, and a final reaped husk detection switch is provided to detect when the final reaped husk has been transferred to the threshing section. The solenoid is energized to displace the reaping latch lever to a clutch-off position, so that the operator does not have to carefully check when the final reaped husk has been transferred to the threshing section, and only at such time. To provide a reaping latch automatic disconnection device for a combine harvester, which can automatically turn off a reaping latch lever and allows even a beginner who is inexperienced with combine harvester operation to perform good combine harvesting work.

Hereinafter, in order to further deepen the understanding of the present invention, the present invention will be explained in detail based on the illustrated embodiment. Fig. 1 is a side view of a combine harvester according to the present invention, and Fig. 2 is a plan view thereof. 2 is the machine base, 2 is a truck frame equipped with a pair of running rollers 3.3 on both left and right sides, and 4 is this truck frame 2.
a pivot shaft for rotatably supporting the machine base 1;
6 is a lifting cylinder that lifts the front part of the machine 1 upwards using the pivot shaft 4 as a fulcrum; 6 is a threshing machine mounted on the machine 1; a handling barrel 7 is mounted inside the machine 1; It is axially mounted along the front and back direction.

8 is a reaping device for multi-row mowing, and multiple grass dividing boards 9...
... and a cutting blade 10.

Reference numeral 11 denotes a shell culm clamping and transferring device, which is composed of a feed chain 12 and a clamping rod 13, and is installed along the handling opening (not shown) of the threshing machine 6.

Further, 14 is a step, and a driver's seat 15 is provided on the step 14 (via an seat frame), and a driving operation section 16 is formed in the front part of the driver's seat 15.

That is, the operation column 17 is installed upright on the step 14, and the operation panel surface 17 is opened from inside this operation column 17.
Threshing clutch lever 18 and reaping latch lever 1 on a
9 and left and right side clutch levers 20 and 21 are respectively erected, and a latch pedal 22 running on the left side of the operation column 17 is installed to constitute the driving operation section 16.

Furthermore, 23 is a grain pedestal, and above it is faced a grain frying conveyor device 24 for taking out fine grains from the first mouth.

Reference numeral 25 indicates a straw cutting device detachably installed at the rear of the threshing machine 6, 26 indicates a straw removing chain extending from the end of the feed chain 12 to the upper part of the cutter of the straw removing device 25, and 27 indicates the chain 26. It is the cover of ``.

Furthermore, 28 is an engine mounted on the machine base 1;
Reference numeral 29 is a drive sprocket for the traveling roller 3, which is connected to a traveling transmission (not shown).

Further, 30 is an idle roller that supports the end of the roller 3 that runs together with the sprocket 29, 31 is a carrier roller that comes into sliding contact with the upper inner surface of the roller 3 that runs, and 32
. . . are a plurality of track rollers brought into sliding contact with the lower inner surface of the running roller 3.

Furthermore, 33 is a suction/discharge seat device whose suction port is opened toward the sorting air path, 34 is an inlet supply plate provided at the lower part of the handling chamber of the threshing machine 6, and 35 is a handling barrel pulley cover.

Next, to explain the shell culm conveying device, the cutting blade 1
A scraping drum 36 is installed in the upper part of the shell, and a star foil 37 for scraping the root side of the culm is installed on the scraping drum 36. It is equipped with a rotatable...

Each of these star foils 37 is equipped in correspondence with the left and right shell culm lifting devices 38 and 39.
Coaxially with these star wheels 37, sprockets (not shown) for driving lower conveyor chains 40 and 40 are provided to constitute left and right lower conveyance devices, and are used to pinch and convey the culm base of the culm. It consists of

Further, left and right upper conveying devices 41.41 for pinching and conveying the tip side of the shell culm are extended above the left and right lower conveying devices, and the conveying tines 41a of these devices 41.41 are connected to the shell culm conveying path. The upper conveying device 41, 41 is covered with an upper left conveying cover 42 and an upper right conveying cover 43, respectively, in a state of protruding toward.

The starting end of the vertical conveying device 44, which can be adjusted in length and shortness, faces behind the upper conveying device 41, 41.
The terminal end between the devices extends toward the starting end of the feed chain 12.

Furthermore, on the inner surface of the handling barrel pulley cover 35, there are two tip detection switches 45, 46 and one culm detection switch 4.
7 are installed side by side in the left and right direction of the aircraft.

Here, each of the tip detection switches 45 and 46 is connected to the handling chamber 48.
(See Figure 5) Detects the handling depth of the culm inserted into the
The inclination angle of the vertical conveyance device 44 is varied via a hydraulic circuit which will be described later, and the culm is always maintained at a predetermined handling depth position.

Further, as shown in FIG. 6, the culm detection switch 47 has a normally open contact 47a that is turned on when the culm comes into contact with it, and a normally closed contact 47b that is turned off when the culm comes into contact with it. Among these contacts 47a and 47b, one contact 47b detects that the final harvested husk has been transferred to the threshing section, that is, the feed chain 12, so below, this contact 47b will be referred to as It is called the final cut culm detection switch.

By the way, the operation column 17 and the feed chain cover 49 mentioned above are provided with manual handling depth changeover switches 50 and 51.
is installed.

Further, as shown in FIG. 3, a sensor arm 5 is provided on the reaping frame 52 that supports the grass dividing board 9 to detect insertion of the culm.
When the culm is inserted, this sensor arm 53 is equipped with a spring 54 as shown by the imaginary line in the same figure.
The mower is moved rearward against the bias force of the mower and turns on the reaping start culm detection switch 55, which is pivotally supported on the reaping frame 52 via a support shaft 56.

Furthermore, as shown in FIG. 4, a mounting plate 57 is horizontally mounted on the inner surface of the operating column 17, and a solenoid 58 for automatically operating the reaping latch lever 19 to the clutch-off position is provided on the mounting plate 57. An operating rod 59 of the solenoid 58 is connected to the reaping latch lever 19.

Further, a normally closed reset switch 60 is attached to the mounting plate 57 and is activated when the reaping latch lever 19 is positioned at the clutch-off position.

Here, the reaping latch lever 19 is connected to the rotation fulcrum shaft 61.
The reaping latch (not shown) is operated on and off via the reaping latch wire 62.

Next, referring to FIG. 5, the structure of the automatic culm (handling depth) adjustment device will be described in detail. A second connecting rod 64 is connected to the pivot portion 44 b, and this second connecting rod 64
The middle part 64a is connected to the hydraulic cylinder 6 for swinging the vertical conveyance device.
It is connected to the piston rod 66 in 5.

A chamber 65 on one side of the cylinder 65 across the piston 67
A is connected to a tank 69 via a hydraulic pump 68, and a chamber 65b on the other side is connected directly to the tank 69.

However, between the hydraulic cylinder 65 and the tank 69, a 4-port electromagnetic switching valve 72 having a solenoid 70 for cross-cutting and a solenoid 71 for deep handling is provided.

Further, a relief valve 73 is provided on the discharge side of the hydraulic pump 68.
are connected.

Next, the configuration of the electric circuit accompanying the above-mentioned hydraulic circuit will be explained in the sixth section.
To explain in detail based on the figure, a series circuit of a battery 74, a reaping start culm detection switch 55 and a delay timer 75,
A series circuit of a reset switch 609, a time contact 75a, and a memory relay 76 is connected in parallel with a series circuit of a relay contact 75no, a final reaping culm detection switch 47b, and a solenoid 58 for driving the reaping latch lever. A self-holding contact 76a of a relay 76 is connected to both ends of the relay 75a.

Further, a series circuit of one tip detection switch 45 and a solenoid 70 for cross boarding, and a series circuit of the other tip detection switch 46 and a deep handling solenoid 71 are connected in parallel to the battery 74 via a normally open contact 47a. Furthermore, the S side of each manual changeover switch 50.51 whose common side is connected to the battery 74 is connected to the front stage of one solenoid 70, and the D side is connected to the front stage of the other solenoid 71, respectively.

Here, if the delay time by the delay timer 75 is tl, and the time from when the final cut culm is transferred to the feed chain 12 until the final cut culm detection switch 47b is activated is t2, then tl The delay time is set so that the relational expression t2 holds true.

The present invention is constructed as described above, and its operation will be explained below.

First of all, to describe the general operation of automatic adjustment of long and short culms (handling depth), when performing combine harvester work, after operating the reaping latch lever 19 to the clutch on position, the sensor arm 53 Detect insertion and 3rd
When displaced to the virtual line position in the figure, the reaping start culm detection switch 55 is turned on and the delay timer 75 is driven.

Next, after the cut culm is transferred to the feed chain 12 via each conveyance device and the chains 40, 41, 44, when the culm detection switch 47 is activated, its contacts 47a and 47b are both closed. Switch.

Since the deep handling solenoid 71 is excited by the ON operation of this contact 47a, the switching valve 72 is switched and the hydraulic oil from the hydraulic pump 68 is transferred to the chamber 6 on the other side of the cylinder 65.
The piston rod 66 connected to the second connecting rod 64 moves in the direction of the arrow a in FIG. , the angle of inclination becomes steeper.

Here, when a time delay of t1-t2 has elapsed after the switching operation of the shell culm detection switch 47, the time contact 75a of the delay timer 75 is turned on, and at the same time, the relay 76 is energized. 76 contacts 76a and 76nO are turned on, and this contact 76
The relay 76 is self-maintained by a.

Next, when the culm inserted into the handling chamber 48 hits each sensor arm of each of the tip detection switches 45, 46, each of these switches 45, 46 is actuated and one of the solenoids 70 is energized.

As a result, the electromagnetic switching valve 72 is switched in the opposite direction to that described above, and the hydraulic oil from the hydraulic pump 68 is supplied to the chamber 65a on one side of the cylinder 65, and the piston rod 66 connected to the second connecting rod 64 is moved. Push up in the direction of the arrow in FIG. 5 to swing the vertical conveyor device clockwise (toward the planking side) to make its inclination angle gentler.

At this time, for example, if the culm is in contact with only the other ear tip detection switch 46, both of the detection switches 45 and 46 are off, so the electricity to each solenoid 70 and 71 is cut off, and the vertical conveyance device The oscillation of the culm 44 is stopped in the optimal threshing state where the tip of the culm, that is, the ear tip is maintained between the sensor arms of each switch 45 and 46.Hereafter, by repeating such automatic handling depth control,
The long and short culms are automatically adjusted.

. Next, we will discuss the automatic disconnection operation of the reaping latch at the end of reaping.At the end of the reaping operation, the shell culm is no longer inserted, and when the sensor arm 53 returns to the position shown by the solid line in FIG. The culm detection switch 55 is turned off to cut off the power to the delay timer 75, and at the same time, sets the timer contact 75a to the normally open position.

After that, the last cut culm comes into contact with the final cut culm detection switch 47b, and the switch 47
When moving away from b, this detection switch 47b switches from off to on.

Therefore, the power from the battery 47 is supplied to each element 76no,
74b to the solenoid 58, and the excitation of the solenoid 58 attracts the operating rod 59 in the direction of arrow C in FIG. 4, automatically operating the reaping latch lever 19 to the clutch-off position.

Simultaneously with the completion of displacement of the reaping latch lever 19 to the off position, the reset switch 60 is turned off, and the relay 76 is turned off.
In addition to cutting off the current flow to the silkworm, the contact point 76 a
, 76 no returns, the power supply to the solenoid 58 is automatically cut off.

Therefore, there is no need for the operator to carefully check the point at which the final harvested husk has been transferred to the threshing section, and the reaping latch lever 19 can be automatically turned off at that point, so the combine operation can be improved. Even a beginner who is inexperienced with the combine harvester can perform the combine harvester work well.

As detailed above, the present invention has the reaping latch lever 19.
The operating rod 59 of the solenoid 58 is connected to the
A final cut culm detection switch 47 b is provided to detect that the final cut culm has been handed over to the threshing section, and the switch 47
energizing the solenoid 58 by the detection output of b;
Since the reaping latch lever 19 is configured to be moved to the clutch-off position, there is no need for the operator to carefully check each time when the final reaped husk has been transferred to the threshing section. At the reaping latch lever 1
9 can be automatically turned off.

Therefore, even a beginner who is not familiar with combine harvester operation can perform the combine harvester operation well.

In addition, as shown in the embodiment, a handling depth manual changeover switch 50 is also provided.
．． 51 near the driver's seat 15 and the culm handling chamber entrance portion on the opposite side from the driver's seat 15, that is, the feed chain cover 49
If the culm is clogged or stagnates at the inlet of the threshing machine 6, the operator can press one switch 5 without returning to the driver's seat 15.
In the vicinity of 1, it is possible to smoothly perform cutting work.

[Brief explanation of drawings]

Fig. 1 is a side view of a combine equipped with an automatic reaping latch cutting device according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a partial plan view showing the mounting structure of the sensor arm 53, and Fig. 4 is a reaping A partial side view showing the related structure between the latch lever 19 and the solenoid 58, FIG. 5 is a system diagram of the handling depth adjustment device, and FIG. 6 is an electric circuit diagram of the handling depth adjustment device having a reaping latch automatic disconnection function. be. 19... Reaping latch lever, 47b...
...Final harvested culm detection switch, 58... Solenoid, 59... Operation rod.

Claims (1)

[Scope of utility model registration request] A solenoid operating rod is connected to the reaping latch lever, and a final reaped husk detection switch is provided to detect when the final reaped husk has been transferred to the threshing section, and the soletoid is excited by the detection output of the switch. An automatic reaping latch disconnection device for a combine harvester, characterized in that the reaping latch lever is configured to displace the reaping latch lever to a clutch off position.