JPS619206A - 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 harvester for reaping, tying, and threshing crops such as grains.

Harvesting work using a harvester, which reaps, binds, and threshes crops such as rice, wheat, and other grains, beans, and grasses, involves raking the crop rows with the cutting body at the front end of the machine as the machine moves forward. This is guided to the reaping position by the cutting blade and harvested, and if the machine base meanderes and does not properly plow through the crop rows, cutting beads may form or the crops may fall over, resulting in loss. Additionally, if the mower blades operate at the edge of a field where there are no crops or at the edge of sowing rows, the mower blades will scratch mud and weeds, causing discomfort.

Therefore, many harvesting machines of this type are equipped with a direction sensor and a reaping sensor at the front end of the machine base to detect meandering of the machine base and the presence or absence of crops. Among these, the direction sensor is rotatably mounted near the weeding body and is mechanically or electrically connected to the left and right side clutches, so that the direction of movement of the machine is, for example, to the left. When the machine shifts to one side, the direction sensor detects the crop row on the left side and rotates, and by disengaging the opposite side clutch on the right side, the machine rotates slightly to the right and corrects the direction of movement of the machine. be. In addition, the reaping sensor is rotatably mounted in the vicinity of the weed cutting body, and is mechanically or electrically connected to the reaping clutch. The system detects this and connects the reaping clutch, and when no crops are present, disconnects the reaping clutch.

However, in conventional harvesters, when the direction sensor and the reaping sensor contact and detect the stem culm of the crop, the reaping sensor that should detect the stem culm detects the stubble after reaping. In some cases, the sensor malfunctioned, or the pressure of the stem culm against the direction sensor was too small to operate, so the function could not always be expected to be satisfactory.

The present invention has been made in view of the above points, and it detects the base of the stem culm by positioning the direction sensor below the reaping sensor, and eliminates excessive pressure on the reaping sensor to improve the The purpose of this project is to provide a harvester that prevents malfunctions and improves detection functions. Embodiments of the present invention will be described in detail below with reference to the drawings.

This example shows an example in which the present invention is applied to a binder.
The figure is a side view of a binder to which this is applied, Figure 2 is a plan view of the vicinity of the direction sensor and reaping sensor - Figure 1, Figure 3 is a side view of the same, and Figure 4 is a side view of the vicinity of the reaping clutch box.
FIG. 5 is a sectional view as well. In the figure, binder 1
is a driving wheel 2 and a reaping machine 3 formed to be detachably attached to the driving wheel 2;
It is made up of. Of these, the drive vehicle 2 includes wheels 6 on a traveling drive shaft 5 that is supported by a frame and a transmission case 4.
A handle 7 having a U-shape in plan view extends diagonally rearward from the frame. B is an engine fixed on a pace 9 projecting rearward from the frame, a fuel tank 10 is attached to this, and the output shaft of the engine 8 is connected by a belt stretched within a belt case 11. A driving connection is made between the transmission case 5 and the input shaft 12 of the transmission device. The input shaft 12 and the travel drive shaft 5 are drivingly connected by a transmission device in the transmission case 4. Reference numeral 613 is a running latch lever + that connects and disconnects a running latch in the clutch box 14, and 15 is a reaping clutch to be described later. This is a reaping clutch lever that can be manually connected and disconnected. Further, an upper bracket 1T having a pin 16 at its tip and a lower bracket 1B having a notch 18a at one tip are fixed to the clutch box 14 and the transmission case 4, respectively.

10,000, the entire reaping machine 3 is a reaping frame 19.
is supported, and the upper end hook-shaped part of the reaping frame 19 is hung on the bin 16, and the lower end part of the bin pin 20 is cut out in the notch 18.
It is configured to be detachable from the drive wheel 2 by engaging with the drive wheel 2. , 21 is a string holder for storing a binding string 22, and is fixed to the upper end of the reaping frame 19. A transmission box 23 in which a transmission device is housed projects horizontally from the lower end of the reaping frame 19, and its input shaft and output shaft 2 of the transmission case 4 are connected to each other.
4 is drivingly connected by a detachable rotation transmission device. That is, the output shaft 24, which is drivingly connected to the input shaft 12 within the transmission case 4, has its protruding end pivotally supported by the output gearbox 25 fixed to the transmission case 4. The two PTO shafts shown in FIG. 5 are connected for 6-axis movement via a clutch mechanism and a rotation transmission mechanism housed in a shaft 25. The PTO shaft has two 66-square heads and projects diagonally forward from the output gearbox 25, and can be rotated and stopped by connecting and disconnecting the clutch mechanism in the output gearbox by operating the reaping clutch lever 15. is configured to do so.

On the other hand, from the transmission box 23 on the reaper 3 side, a reaping clutch box 28 in which the reaping clutch mechanism 2T is housed, and a bearing box 30 in which a rotation transmission mechanism (not shown) having a ball bearing 29 is housed diagonally backward. An input shaft 31 of the reaping clutch mechanism 27 having a monogonal head is provided protruding from the rear end of the reaping clutch box 28 . 32 is a connecting pipe having a hexagonal hole.
a, 32b and a shaft 32c that integrally connects them, and by drivingly connecting both shafts 26, 31 in the state shown in FIG. 5, and moving them to the right in the figure from this state, The shafts 2G and 31 are configured to be disconnected from each other. Reference numeral 33 denotes an output shaft of the reaping clutch mechanism 27, which is rotatably supported by a ball bearing 29.
It is drivingly connected to the transmission device in the transmission box 23 via the rotation transmission mechanism in the transmission box 23. With this configuration, when the reaping clutch mechanism 2T is connected, the PTO shaft 2
The six rotations on the shaft are transmitted to the transmission device in the transmission box 23, and the structure of the reaping clutch machine $27 and its connection/disconnection mechanism will be described later.

A reaping machine 3 having such a drive unit has a reaping frame 1
At the lower end of 9, there are seven pre-cutting frames 34 that are perpendicular to this so as to form an inverted T-shape, and three dividing rods 35 extend forward along the ground. At the front ends of the grass rods 35, grass cutting bodies 36 are fixed, respectively, which plow through the culms of the field as the machine moves forward. 3T is a lifting device that is installed one by one between adjacent branching rods 35 and lifts the tip of the fallen shell culm and transports it to raise the shell culm upward from the conduction box 23. The upper end is supported by an extending lifting pipe 38, and the transmission box 23 is connected to the transmission box 23 via a transmission shaft passing through the lifting pipe 38.
Driven from the side. Further, 39 is a cutting blade formed in the shape of a clipper and supported perpendicularly to the weeding rod 35,
It is driven from the transmission box 23 side, and the lifting device 3
The structure is such that the root part of the culm that is erected at step 7 is harvested.

Further, 4G indicates that after cutting by the cutting blade 39, the rotary raking body 4
This is a horizontal conveyance device that conveys the culm scraped in step 2 to a binding device (not shown) on the back side of the paper in FIG.
Both are rotationally driven from the transmission box 23 side.

The shaft of the rotary raking body 42 is pivotally supported at the center by a bracket 45 that projects rearward from a support plate 44 fixed to the weeding rod 35.

Next, a device that automatically connects and disconnects the reaping clutch mechanism 27 depending on the presence or absence of a culm, and a machine that automatically corrects the meandering of the machine base! We will explain the device that advances the process. An L-shaped bracket 46 horizontally protrudes forward from the support plate 44 that connects the dividing rod 35 on the uncut culm side, which is the left side in the direction of machine movement, and the pulling device 3T. A rolling bearing 47 is provided with an outer ring fixed inside the case at its tip.
A sensor shaft 4B is rotatably supported.

An arm 49 and a diamond-shaped direction sensor 50 are fixed to the upper and lower ends of the sensor shaft 48 by welding or the like, respectively, so that when the direction sensor 50 rotates, the arm 49 rotates together with the sensor shaft 48. It is composed of Further, between the rolling bearing 4T and the direction sensor 50, another rolling bearing 51 has an inner ring fitted and fixed to the sensor shaft 4B, and a case fitted and fixed to the rotatable outer ring is provided with another rolling bearing 51. , the reaping sensor 52 and the pin 53 are fixed by welding or the like, and when the reaping sensor 52 rotates, the pin 5
3 are configured to integrally revolve around a sensor shaft 48. That is, the direction sensor 50 is located below the reaping sensor 52 and is rotatably supported close to the ground. The reaping sensor 52 is a culm 54A planted in the field.

54B, 54C...... are extended in parallel directions, and are configured to rotate clockwise in Fig. 2 by contacting the culm 54B. A reaping clutch rod 55 has one end pivotally connected to a pin 53 integral with the reaping clutch box 52, and extends in the direction of the reaping clutch box 28. cl 58 with end inserted
is a buffer spring located between the lever 5T and the washer 59 and interposed on the reaping clutch rod 55. As shown in FIG. 5, the clutch disc 60 fixed to the output @33 of the reaping clutch mechanism 27 is connected to the reaping clutch box
8, and the input shaft 31 is pivotally supported on the inner circumference of the clutch disc 60. 61 is the input shaft 31
A clutch pulley is slidably but non-rotatably fitted in the splined part of the clutch pulley, and its end face is provided with a clutch face 61a that meshes with a clutch face 60a provided on the end face of the clutch disc 60, Furthermore, a roller 63 at the free end of the shifter 62 fixed to the shifter shaft 56 is engaged in the groove of the clutch pulley 61 . When the machine moves forward and the reaping sensor 52 contacts the culms 54A and 54B and rotates clockwise in FIG. 2, the reaping clutch rod 55 is pulled and the shifter 62 rotates, causing the clutch surface to " a + 61a are in mesh with each other, and the rotation of the input shaft 31 is transmitted to the output shaft 33 to rotate each device of the reaper 3.

On the other hand, the direction sensor 50 detects when the machine is moving straight and when the culm 54
It passes between the shell culm 54B and the shell culm 54C, but when the machine meanders and shifts to the right and to the left, the machine passes between the shell culm 54B or the shell culm 54C.
It is configured to rotate clockwise or counterclockwise in FIG. 2 when it comes into contact with the respective ones. The arm 49, which is integrated with the direction sensor 50, is connected to a side clutch that extends through the vibro 4, one end of which is supported by the bracket 46. The traveling drive shaft 5 is divided into left and right wheels 6, and a side clutch is attached to each traveling drive shaft 5 through gear engagement, and the direction sensor 50 rotates clockwise in FIG. By moving and pushing the wire 65, the left side clutch in the direction of travel is disengaged, and the left wheel 6 is decelerated or stopped. Further, when the direction sensor 50 rotates counterclockwise in FIG. 2 and pulls the wire 65, the right side clutch is disengaged and the right side wheel 6 is decelerated or stopped.

The reaping operation using the binder configured as above will be explained. After starting the engine 8, the operator operates the running latch lever 13 to make the machine run, and walks along the machine while holding the handle 7. , When the machine advances, the shell culm 54A of the field.

54B is the adjacent weeding rod 3 that is separated by the weeding rod 36.
At this time, as shown in FIG.
As the machine moves forward while contacting B, the reaping sensor 5
2 rotates clockwise in the figure and pulls the reaping clutch rod 55. Therefore, the lever 5T and shifter 62 rotate via the buffer spring 58, and the clutch surfaces "a + 61B" engage, so that the rotation of the PTO shaft 26 on the driving wheel 2 side is reduced to the reaper 3.
It is transmitted to the side output shaft 33, and each device of the reaper 3 rotates.

In this way, each device of the reaper 3 is activated and the machine base moves forward, so that the culms 54A and 54B lift up the tips of the ears and are lifted up and conveyed by the device 3T to stand up, and then the root portions are raised. is cut by the cutting blade 39.

The harvested culms 54A, 54B are released from the loading device 39 by pulling up the tip portion, are scraped in the width direction of the machine by the rotating scraper 42, and are transported to the bundling passage by the horizontal conveyor 40. , tied up and released into the field.

If the machine is traveling straight and the direction of movement shifts to the left, for example, the direction sensor 50, which was traveling between the shell culms 54B and 540, shifts to the left and comes into contact with the shell culm 54C. rotates counterclockwise, the wire 65 is pulled, the right side clutch is disconnected, and the right wheel 6
The vehicle decelerates or stops together with the driving vehicle 5. Therefore, the machine base turns to the right and the deviation to the left is corrected.
After the correction, the direction sensor 50 separates from the culm 54C and returns to the illustrated attitude by a spring member (not shown), so the side clutch is connected again and the machine moves straight.

In this way, the reaping clutch is automatically connected and disconnected and the machine is steered through detection by the sensors 52 and 50.
In this device, since the reaping sensor 52 is installed at the top and the direction sensor 50 is installed at the bottom, the reaping sensor 52, which is relatively sensitive, is pushed at a high position on the weak stem culm. 52 will not be damaged and will not malfunction due to sensing the stubble. Since the large direction sensor is pressed at the base of the sturdy stem culm, detection is performed reliably.

When storing the machine after reaping work, remove the wire 55 for the direction sensor 50, push up the connecting pipe 32, and release the upper and lower pins 16 and 20 from the notch. Therefore, the driving vehicle 2 and the reaper 3 can be easily separated. ``In addition, a working machine other than the reaper 3, a transport tool, etc. can be connected to the drive vehicle 2 using the PTO shaft 26 and the connecting pipe 32. In this case, a clutch mechanism is housed in the output gear box 25. As a result, rotation transmission to work equipment, etc. can be connected and disconnected without any problem.

Although this embodiment shows an example in which the present invention is applied to a rice and variable frequency binder, it can be similarly applied to a combine harvester, a legume harvester, and the like. Further, the reaping clutch mechanism 2T may be provided on the traveling section side, and furthermore, both the sensors 50 and 52 may be electrically connected to the reaping clutch mechanism 27 and the side clutch, respectively. In this case, a hydraulic system may or may not be provided.

As is clear from the above description, in the harvester according to the present invention, the direction sensor 50 is located below the reaping sensor 52 and is rotatably supported, so that the reaping sensor 52 is sensitive to sensing. Since the pressure on the culm is weak, the reaping sensor 52 will not be damaged, and malfunctions caused by the reaping sensor 52 detecting stubble can be prevented. Further, since a large pressure from the stiff base of the stem culm acts on the direction sensor 50, detection is performed reliably and the steering function of the machine base is improved.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the harvester according to the present invention, FIG. 1 is a side view of a binder to which this is applied, FIG. 2 is a plan view of the vicinity of the direction sensor and the reaping sensor, and FIG. 3 is a side view, FIG. 4 is a side view of the vicinity of the reaping clutch box, and FIG. 5 is a sectional view. 1...binder, 3 fists...reaper, 2T...eI
I reaping clutch mechanism, 48...sensor shaft, 50...
... Direction sensor, 52 ... Reaping sensor, 54A,
54B, 54C--Culm.

Claims (1)

[Claims] The direction sensor connected to the machine advance direction control device is located below the reaping sensor connected to the reaping clutch, and both sensors are pivoted to the front end of the machine so that they can rotate freely in the horizontal direction. Characteristic harvesting machine.