JPH0713472Y2 - Mowing pretreatment device in harvester - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a pre-cutting treatment device for a harvester such as a so-called general-purpose combine harvester capable of cutting rice, wheat, soybean, etc. over the entire width in front of the traveling machine body and then threshing. More specifically, the present invention relates to a structure that allows the pre-mowing treatment device to take a laterally inclined posture with respect to the traveling machine body.

[Conventional technology]

A harvester commonly called a general-purpose combine is a Japanese Patent Application Sho 62-
As disclosed in Japanese Patent No. 206055 (JP-A-1-47312) and the like, a front and rear longitudinal screw handling cylinder, etc., which is arranged at a position closer to one side of the traveling body equipped with a cockpit in the front, is incorporated. While equipped with a threshing unit, a rocking sorter, and a wind sorter such as Kara Min Juan, it has a reel with a tine bar over the entire width of the traveling machine and a cutting blade on the lower surface for the horizontal scraping. A pre-cutting apparatus consisting of a platform equipped with an auger and a square tube-shaped feeder house (having a chain conveyor inside) communicating with an opening near the rear surface of the platform are provided. A feeder house with a device is attached to the traveling machine so that it can be raised and lowered.

After cutting the grain culm pulled backward by the rotating reel and tine bar in this pre-mowing treatment device with the cutting blade,
The scraping auger collects the culm, and the chain conveyor in the feeder house sends it to the threshing section.

When the harvester of this configuration moves forward along the field scene,
Either the right or left crawler track of the traveling vehicle may enter the ridge, and the other crawler may ride on the ridge, causing the traveling vehicle to incline left or right. Inclining to the left and right is not preferable because the degree of occurrence of the fallen grain culm by the reel is different depending on the left and right, the cutting height of the stem culm is different, and the felled grain culm is left uncut.

Even if the feeder house and the pre-mowing treatment device are integrally adjusted up and down with respect to the traveling machine body, if the left-right inclination of the traveling machine body is tight, one of the bottom surfaces of the left and right plappo homes in the pre-mowing treatment device is used in the field. However, as disclosed in Japanese Utility Model Laid-Open No. 60-191139, the platform of the pre-mowing treatment device is connected to the feeder house so that the left and right sides of the platform are vertically rotatable. On the other hand, at a position other than the rolling pivot point, a through bolt fixed to one member is penetrated and connected to an elongated hole formed in the other member, and a through bolt is fixed from a bracket fixed to the head of the through bolt. By inserting an adjusting bolt extending in a direction orthogonal to the bracket into a bracket with a hole fixed to the other member, and screwing a nut onto the adjusting bolt. , Adjusting the cutting height of the culms at left and right positions of the pretreatment device reaper to substantially constant have been proposed.

[Problems to be solved by the device]

However, in the above-mentioned prior art, since the feeder house is arranged at an offset position (offset) with respect to the left-right center of the platform, and the rolling pivot is biased toward the left-right center of the platform, the cutting Since the left-right weight balance of the pretreatment device is poor, even if the position of the adjusting bolt in the prior art is arranged at a position far from the rolling pivot, a large force is required for adjusting the screwing of the nut. There was a problem.

Further, in the above-mentioned configuration, in order to correct the rolling angle again even after the adjustment is once performed, it is necessary to stop the combine once and adjust the rolling angles on both the left and right sides of the platform, which is a problem in that the adjustment work takes time. .

The present invention aims to solve these problems.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention has a front of a traveling machine in a harvesting machine equipped with a threshing section and the like, and forwardly projects a feeder house that conveys grain culms to the threshing section. , The left and right long platforms in the pre-mowing device are arranged so as to be offset from the left and right center position of the platform, and the front opening of the feeder house and the introduction port of the platform communicate with each other,
A platform is connected to the front part of the feeder house so that it can be rolled at approximately the center position on the left and right, and between the feeder house and the platform, rolling drive is performed near the side end that is separated from the rolling pivot on either the left or right side. It is inserted by means.

[Operation and effect of device]

According to this configuration, the platform in the pre-mowing treatment device has a left-right longitudinal shape, and a large number of harvested grain culms are gathered in the substantially left-right center of this platform, and therefore the left-right substantially central position and the left-right center of gravity position of the pre-mowing treatment device. Will almost match. If it is connected to the front part of the feeder house so as to roll around this point, the weight balance between the cutting pretreatment device and the rolling pivot will be good.

Therefore, it is not necessary to have a means for constantly pushing up the side, which is always downward, as in the case where the rolling pivot is set at a position where the left and right weight balance of the pre-mowing treatment device is lost.

Further, when the pushing-up means is omitted, the rolling drive means for driving the cutting pretreatment device so as to incline in either the left or right direction with respect to the feeder house receives a large load in one rolling direction and the other rolling direction. Although there is an imbalance that a small load is applied in the direction, when the left and right balance of the cutting pretreatment device is balanced as in the present invention, the above load discrepancy disappears and the interposition between the feeder house and the platform is eliminated. Even if the rolling drive means to be inserted is arranged in the vicinity of the side end portion which is separated from the rolling pivot point on the left or right side, the rolling drive means can be lightly loaded.

In addition, since the rolling drive means is used, the operator on the combine can perform remote control, and the rolling angle can be easily and arbitrarily adjusted during the mowing operation.

〔Example〕

Explaining an example, the harvester 1 which is a general-purpose combine is equipped with a pair of left and right crawler type traveling devices 3, 3 on the lower surface of the traveling machine body 2, and is provided on the front right side in the forward direction of the traveling machine body 2. Is equipped with a control part 4 with a seat, an engine (not shown) and a grain storage tank 5 are provided behind it, and a double pitch screw plate is provided on the outer circumferential surface on the left side of the traveling machine body 2. And a front and rear longitudinal handle cylinder 6a in which an appropriate number of handle teeth are implanted
And the like, a threshing unit 6 below, a receiving net 8, an oscillating sorting device 9 such as a sheave, and a wind sorting device using the wind of Karafu Juan 10.

On the other hand, on the front surface of the traveling machine body 2, a square tubular feeder house 11 communicating with the front opening of the threshing section 6 is mounted via a lifting hydraulic cylinder 12 so as to be movable up and down with respect to the traveling machine body. Inside the feeder house 11, the left and right long conveyor plates
A chain conveyor 13 in which 13a is attached to a pair of right and left chains 13b, 13b at appropriate intervals is arranged, and a front end drum 13c of the chain conveyor 13 is arranged along the outer surface of the feeder house 11 in a mission case of the traveling machine body 2 (not shown). (3) is driven to rotate through a transmission unit 14 such as a chain, and a cutting culm from a cutting pretreatment device 15 which will be described later is moved along a bottom plate 11a of the feeder conveyor 11 which is inclined backward and upward by the chain conveyor 13 to remove the threshing unit. 7 is to be transported.

Reference numeral 7a is a second reducing cylinder that conveys grains from a second gutter (not shown) so as to reduce them to the threshing section 6, and reference numeral 7b is a discharge for discharging the grains in the tank 5 to the outside. It is a cylinder.

The mowing pretreatment device 15 includes a rectangular cylindrical insertion frame body 17 communicating with the front end opening 16 of the feeder house 11, and the insertion frame body 17
2 and a bucket-shaped platform 18 extending left and right over the entire width of the traveling machine body 2. A reel 20 having a tine bar 19 is provided on the platform 18 over the entire width of the traveling machine body 2 as shown by an arrow in FIG. Mounted to rotate in the direction
On the lower surface side of the same, there is also a left and right long hair clipper-shaped cutting blade 21, and above the bottom plate 18b of the platform 18, a horizontally long auger 25 for rotation in the direction of arrow A is provided.
The reel (20) and the auger (25) are rotationally driven from the transmission unit (14) via a horizontal transmission shaft (26) with a universal joint, and the cutting blade (21) is driven.

After the grain culm that has been pulled backward by the rotating reel 20 and tine bar 19 in this pre-reaping device is cut by the cutting blade 21, it is collected by the auger 25 for scraping.

At this time, on the circumferential surface of the auger 25 rotating in the direction of the arrow A, the screw-shaped scraping plates 2 which are in opposite swivel directions are provided.
2 and 23 are provided while leaving the axially intermediate portion of the auger 25, and the circumferential surface of this axially intermediate portion is projected downward on the substantially lower surface side of the circumference and retractable so that it is retracted on the substantially upper surface side. Scraping stick
24, and the cut culm is fed laterally on the platform 18 by the rotation of the auger 25 (almost in the longitudinal center of the auger 25), and then the introduction port 2 in the rear plate 18a of the platform 18
7 to the chain conveyor 13 in the feeder house 11 at the front end opening 16 of the feeder house 11.

Incidentally, reference numeral 28 is a grass body projecting forward from both left and right ends of the mowing pretreatment device 15, and the reel 20 is configured to be adjustable in forward and backward movement and in vertical swing according to the fall state of the grain stem or the like. Has been done.

Then, the pre-mowing treatment device 15 is such that the substantially central position in the left-right direction is connected to the front part of the feeder house 11 so as to be able to roll left and right via a support pin 30 projecting forward, and the configuration thereof will be described below. Detailed description.

That is, as shown in FIG. 2 and FIG.
The left and right center position of the feeder house 11 is arranged at a position which is offset by a distance (L) to one side (in the embodiment, the right side when viewed from the front surface of the traveling machine body 2) with respect to the center position of the platform 18 in the left and right direction. ing.

Of the pair of left and right vertical reinforcing frames 31 and 32 surrounding the front end opening 16 in the feeder housing 11 and the lower beam reinforcing frame 33, a bearing to be mounted at a position closer to the upper portion of the vertical reinforcing frame 31 closer to the left and right central portion of the traveling machine body 2 Support pin 30 rotatably supported on 34
Is projected forward, and the support pin 30 is fitted and inserted into the boss 35 at a position near the upper side surface of the insertion frame 17 having an opening area substantially the same as that of the front end opening 16, and the platform 18
The rear plate 18a is penetrated and the double nut 36 is tightened.

Further, the rear frame 37 of the cutting pretreatment device 15, which is arranged along the upper end of the rear plate 18a of the platform 18 in the left-right longitudinal direction, is placed on the upper surface of the interposition frame body 17, and the interposition frame body. A pair of left and right hook bodies 38,3 protruding upward from both the upper left and right sides of 17
The cutting pretreatment device 15 is locked to 8 so that the cutting pretreatment device 15 does not fall forward.

Therefore, the mowing pretreatment device 15 with the platform 18 is
It is detachable with respect to the interposition frame body 17, and at the same time, the interposition frame body 17
The structure is such that the left and right can be integrally rolled with respect to the feeder house 11 when mounted on the.

Further, reference numeral 39 is a hydraulic cylinder as a rolling driving means for rolling the cutting pretreatment device 15 to the left and right around the support pin 30, and the lower end of the hydraulic cylinder 39 is on the side of the feeder house 11 (from the support pin 30). The bottom end is pin 40 pivotally attached to the back surface of the vertical reinforcing frame 32 located on the side far apart)
The upper end is rotatably pivotally attached to a connecting pin 41 projecting rearward from the insertion frame 17 and is vertically expanded and contracted by a hydraulic motor 42.

As a result, the cutting pretreatment device 15 can be driven by rolling so as to have an arbitrary left-right inclination angle by remote control from the control section 4.

Further, reference numerals 43 and 44 are rollers provided at positions near the lower portions of the pair of left and right vertical reinforcing frames 31 and 32, and both rollers 43 and 44 are guides having an L-shaped cross section attached to the back surface of the insertion frame body 17. Rail 45,46
The reaping pretreatment device 15 smoothes the rotating action at the time of rolling rotation, and eliminates kinking and lateral twisting of the lower part of the reaping pretreatment device 15 from the feeder house 11. Is something that can be done.

Further, reference numeral 47 is a guide pin projecting forward from the lower beam reinforcing frame 33 of the feeder house 11, and the guide pin 47 is fitted into the arc-shaped guide groove 48 at the lower end of the interposing frame body 17, and bolted so as not to come off. And plays a role of guiding the rolling rotation of the pre-mowing treatment device 15.

Reference numeral 49 is a lock pin that can be operated forward and retractably so that the front opening 16 of the feeder house 11 and the inlet 27 of the platform 18 of the pre-mowing treatment device 15 can be held in their positions substantially in phase with each other. The remote control from the manual lever 50 by the wire 51 can perform the locking and unlocking operations, and the limit switch 52 which is turned on when the manual lever 50 is locked is associated with the central control unit 53 shown in FIG. In this configuration, the hydraulic cylinder 39 as the rolling driving means or the hydraulic motor 42 to the hydraulic cylinder 39 is turned off to prevent the careless pretreatment device 15 from rolling carelessly.

Further, in the central control device 53, the horizontal sensor 54 mounted on the traveling machine body 2 and the traveling machine body 2 provided in the pre-mowing treatment device 15 are provided.
Alternatively, the inclination sensor 55 for detecting the relative inclination angle with respect to the feeder house 11 and the respective signals of the cutting height sensor 56 provided at the lower end of the pre-mowing processing device 15 are input to the hydraulic cylinder 39 regardless of the horizontal inclination of the traveling machine body 2. Sending a command signal, the reaping pretreatment device 15 is configured to be able to perform rolling control in a substantially horizontal direction on the left and right, and further, the raising and lowering electromagnetic solenoids 57, 58 in the switching valve to the raising and lowering hydraulic cylinder 12 are actuated to perform the reaping pretreatment device. 15 can be adjusted up and down to control the cutting height within a certain range.

Further, when the cutting height sensor 56 senses the cutting pretreatment device 15 to a height above a certain level, the hydraulic pressure is applied to return the cutting pretreatment device 15 in parallel with the traveling machine body 2. The cutting pretreatment device 15 is raised to a predetermined ground height by the ON signal of the back switch 59 which drives the cylinder 39 or the clutch is switched when the traveling machine body 2 moves backward. It can also be controlled to return to a state parallel to the traveling machine body 2, and these controls make handling of the mowing pretreatment device 15 extremely convenient, and the mowing pretreatment device 15 carelessly rolls and collides with the ground. It is safe to prevent accidents that may occur.

Reference numerals 60 and 61 are an upper limit switch and a lower limit switch for the expansion / contraction amount of the hydraulic cylinder 39 which is the rolling drive means.

In this configuration, when the traveling machine body 2 is tilted downward to the left as viewed from the front as shown by the chain double-dashed line in FIG. 2, the hydraulic cylinder 39 serving as the rolling drive means is shortened by an appropriate amount, and the front of the feeder house 11 is moved. Rolling control can be performed so that the right and left sides of the pre-mowing device 15 that rolls integrally with the interposition frame body 17 around the 30 support pins 30 on the side of the section are returned to a substantially horizontal state (solid line state). On the contrary, when the traveling machine body 2 inclines to the lower right, the hydraulic cylinder 39 is extended by an appropriate amount to keep the pre-mowing treatment device 15 in a substantially horizontal posture regardless of the lateral inclination of the traveling machine body 2. You can

Thus, in the present invention, the left and right long cutting pretreatment device 15
Since the substantially central position in the left-right direction is rotatably supported to the front side of the feeder house 11 via the support pin 30, the position of the center of gravity of the cutting pretreatment device 15 and the support pin 30 are approximately or substantially the same. The left and right balance is improved by matching. Therefore, the rolling driving means of the pre-mowing treatment device 15 is not unduly burdened, and in particular, when the traveling machine body and the pre-mowing treatment device are both left and right in a horizontal state, an operation command is issued to the rolling driving means. It is possible to maintain the horizontal state without.

In the harvester in which the feeder house 11 is biased to the left and right center positions of the platform 18 which is long and left in the pre-mowing treatment device so as to be freely rollable, the communication port from the platform to the feeder house is also a rolling turning branch. Since the pin 30 is biased to the right or left position, the platform 18 is installed when the feeder house 11 is tilted left or right with respect to the pre-mowing treatment device 15 as shown in FIGS. 2 and 9. The mouth 27 and the front opening 16 of the feeder house 11 are inclined so as to be inclined in opposite directions.

Therefore, as shown in FIG. 9, a step of x1 or x2 is formed between the lower end edge of the introduction port 27 (the upper edge of the bottom plate 18b of the platform 18) and the lower end edge of the front opening 16 on the side largely separated from the support pin 30. Therefore, the communication area between the inlet 27 and the front opening 16 is reduced only by the overlapping area portion of the triangular shape when viewed from the front, but the step difference between the lower end edges of the two on the side close to the support pin 30 is small. Becomes

On the other hand, since the grain culm scraped by the scraping auger 25 on the platform 18 moves laterally to the substantially center side of the auger 25 (the side close to the support pin 30),
As a result of the decrease in the step at the portion where many grain culms are gathered, there is no adverse effect on the succession of grain culms to the chain conveyor 13 at the front opening 16 of the feeder house 11.

[Brief description of drawings]

1 shows a plan view of a harvester, FIG. 2 is a side view thereof, FIG. 3 is a sectional view taken along line III-III of FIG. 1, and FIG. 4 is FIG. IV-IV plan view of FIG. 5, FIG. 5 is a sectional view taken along line VV of FIGS. 3 and 9, and FIG. 6 is a sectional view taken along line VI-VI of FIG. 3 and FIG. Figures are Figures 3 and 9
FIG. 7 is a sectional view taken along line VII-VII of FIG. 8, FIG. 8 is a block diagram of the control circuit, and FIG. 9 is an explanatory view showing a front view of a main part. 1 ... Harvester, 2 ... Traveling machine, 3,3 ... Traveling device, 5
...... Tank, 6a …… Handling cylinder, 6 …… Threshing part, 11 …… Feeder house, 12 …… Elevating means, 13 …… Chain conveyor, 15
...... Mowing pretreatment device, 16 …… Front end opening, 17 …… Interposer frame, 18 …… Platform, 20 …… Reel, 21 …… Milling blade, 22,23 …… Scraping board, 24 …… Scraping Reinforcing rod, 25 …… Auger, 27 …… Inlet, 31, 32 …… Vertical reinforcing frame, 30 …… Support pin, 34 …… Bearing, 37 …… Rear frame, 38 …… Hook body, 39 ……
Hydraulic cylinder, 42 …… hydraulic motor, 43,44 …… roller, 4
5,46 …… Guide rail, 47 …… Guide pin, 48 …… Guide groove, 49 …… Lock pin, 50 …… Manual lever, 53 …… Central control unit, 54 …… Horizontal sensor, 55 …… Inclination sensor , 56 …… Mowing height sensor.

Claims (1)

[Scope of utility model registration request] 1. A front of a traveling machine body of a harvester equipped with a threshing section and the like has a forwardly projecting feeder house for transporting grain culms to the threshing section, and a cutting pretreatment device is provided in front of the feeder house. Place the platforms on the left and right sides so that they are offset from the center of the platform in the left and right direction, and with the front opening of the feeder house and the introduction port of the platform communicating with each other, place the platform at the front of the feeder house approximately in the center of the left and right sides. The harvester is characterized in that it is connected at a position where it can be rolled freely, and a rolling drive means is interposed between the feeder house and the platform in the vicinity of a side end apart from the rolling pivot on either the left or right side. Pre-treatment device for machine.