JPS5840821Y2 - Combine long and short culm automatic adjustment device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for automatically adjusting the long and short culms of a combine. This invention relates to an automatic length and short culm adjustment device for a combine, which has a directional control valve that switches and maintains hydraulic oil in a cylinder.

Conventionally, the drive transmission and swing displacement of the vertical conveyance device have been separated and carried out from different directions, making the installation of the device complicated and prone to accidents such as mechanical malfunctions and disconnection of electrical wiring. At the same time, it is difficult to make the entire device compact, and therefore maintenance and inspection are also complicated.

In particular, in the conventional technology in which the limit switch for position detection is moved together with the device, the loose part of the electrical wiring for the limit switch is long, and the wiring is likely to become tangled, resulting in disconnection or malfunction, which reduces safety. It was lowering it.

The present invention solves the above-mentioned conventional drawbacks, and has a structure in which the handling depth is automatically adjusted by swinging the vertical conveyance device according to the culm length of the cut husk, and a hydraulic cylinder for adjusting the handling depth and power transmission. A collar for use and a switching shaft for detecting the operating range are provided approximately parallel to a supporting case on the aircraft body side, and the collar is slidably supported by the case, and the switching shaft, to which switch pieces are attached at intervals, is attached to a hydraulic cylinder. Each limit switch for position detection is fixed to the case by integrally movably connected to the piston rod and facing each of the switch pieces, and the collar is formed into a long length similarly to a hydraulic cylinder. By doing so, it is possible to firmly support the vertical conveyance drive shaft, prevent it from twisting and ensure good drive transmission, and also compactly integrate the long hydraulic cylinder, collar, and switching shaft into the same member using a case. It is easy to assemble and disassemble them, and can be easily installed in a narrow space.Furthermore, by fixing each of the limit switches to the case where the hydraulic cylinder is installed, the floating parts are short. The object of the present invention is to provide an automatic length/short culm adjustment device for a combine, in which electric wiring can be fixed along, for example, an oil pipe of a hydraulic cylinder, and maintenance and inspection can be easily performed and the machine can be handled safely. be.

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 equipped with an automatic length and short culm adjustment device according to the present invention, and Fig. 2 is a side view of the combine harvester equipped with the automatic long and short culm adjustment device according to the present invention. 1 is a plan view, in which 1 is a machine base, 2 is a truck frame equipped with a pair of running loans 3, 3 on both left and right sides, and 4 is a machine base when the machine is turned 10 times, etc. 1 on the track frame 2 so as to be rotatable in the vertical direction;
5 is a lifting cylinder that uses the pivot shaft 4 as a fulcrum to lift the front part of the machine 1 upward together with a culm reaping device to be described later; 6 is a threshing machine mounted on the machine 1; Inside, a handling cylinder I is mounted on a shaft along the longitudinal direction of the machine base 10.

Reference numeral 8 denotes a reaping device for mowing in multiple rows, which is composed of a plurality of grass division plates 9 . . . and a cutting blade 10.

Reference numeral 11 denotes a grain transfer device, and this device 11 is composed of a feed chain 12 and a grain transfer rod 13, and is installed along the handling opening (not shown) of the threshing machine 6.

Further, 14 is a driver's seat, 15 is an operation control unit, 16 is a grain pedestal on which a grain frying conveyor device 17 for taking out fine grains from the first mouth is mounted, and 18 is a part of the threshing machine 6. A straw cutting device 19 is detachably installed at the rear, and a cutter 1 of the straw cutting device 18 is connected from the end of the feed chain 12 to the cutter upper part 1 of the straw cutting device 18.
The extended straw chain 20 is a cover for the chain 190.

Further, 21 is an engine mounted on the machine base 1, and 22 is a drive rocket for the traveling roller 3, which is connected to a traveling mission (not shown).

Further, 23 is a front idler that supports the end of the roller 3 that runs together with the sprocket 22, and 24 is a carrier roller that comes into sliding contact with the upper inner surface of the roller 3 that runs.
25... are a plurality of track rollers brought into sliding contact with the lower inner surface of the running roller 3.

Furthermore, 26 is a suction/discharge seat device whose suction port is opened toward the sorting air path, 27 is an inlet supply plate provided at the lower part of the handling chamber of the threshing machine 6, and 28 is a handling barrel pulley cover.

Next, to explain the shell culm conveying device, a raking drum 29 is installed above the cutting blade 10 in the reaping device 8.
The scraping drum 29 is equipped with a star wheel 30 for scraping the root side of the culm, which can be rotated freely.

Each of these star foils 30 is equipped in correspondence with the left and right shell culm lifting devices 31, 32, and a lower conveyance chute 73 is installed coaxially with these star foils 30.
A sprocket (not shown) for driving 3.33 is provided to constitute the left button and right lower conveying device, and is configured to clamp and convey the culm base of the culm.

Furthermore, left and right upper conveying devices 34° 34 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 34a of these devices 34.34 are connected to the shell culm conveying path. The upper conveyance device 34, 34 is covered with an upper conveyance left cover 35 button and an upper conveyance right cover 36, respectively, in a state where they are exposed in a protruding manner.

The starting end of a vertical conveying device 37 whose length can be adjusted is exposed behind the upper conveying devices 34, 34, and its terminal end extends toward the starting end of the foot chain 12. ing.

Further, a detection device 3 is provided on the inner surface of the handling cylinder pulley cover 28.
8,39.40 and these devices 38.
The handling depth of the shell culm inserted into the handling chamber is detected at 39.40, and the inclination angle of the vertical conveyance device 37 is automatically varied via a hydraulic circuit which will be described later.

This vertical conveyance device 31 is configured to swing to the shallow handling side and deep handling side by means of a long/short culm automatic adjustment device 42 including a hydraulic cylinder 41. To explain the structure in detail with reference to FIG. 3, a hydraulic cylinder 41 having a piston rod 41a is attached to a frame 4.
It is supported at the center part 45a of a vertical conveyance case 45 whose lower end is pivotally supported by an upright plate 44 screwed to A collar 46 is slidably inserted therein.

Further, a spline shaft, so-called drive shaft 49, is installed in the collar 46 via the rotary cylinder 4T and a power transmission cylinder 48 having a spline gear formed on its inner peripheral surface.

This drive shaft 49 is a universal joint 5
0 to the drive shaft 51, and transfers the rotational force of the encoder 210 to each gear (not shown) in the gear case 52.
After being transmitted to the drive shaft 51 and the universal joint 50, the power is transmitted to the drive shaft 49.

Furthermore, a vertical conveyance drive bevel case 53 is provided on one side of the vertical conveyance case 45.

A driven shaft 56 is mounted inside the case 53 via bearings 54 and 55, and a bevel gear 59 is fitted therein to mesh with a bevel gear 58 fitted on the vertical transport drive shaft 5T.

Further, a lid 61 is attached to the left side of the bevel case 53 using set bolts 60.
and the collar 46, and the driven shaft 56 is welded to the collar 46.
The left side of 47. is slightly inserted into the rotary cylinder body 47.
56 is welded.

In other words, the rotational force of the drive shirt 1490 is applied to each cylindrical body 4.
8.47 to the driven shaft 56.

Here, it goes without saying that the vertical conveyance drive shaft 57 is interlocked and connected to the chain 37a of the vertical conveyance device 3T described above.

Furthermore, a vertical conveyance adjustment screw 63 is supported by rats 62, 62 on a screw attachment portion 53a formed integrally with the bevel case 53.

The adjusting screw 63 has its proximal end fixed to a joint 65 having a U-shaped end surface and pivotally attached to the tip of the piston rod 41a of the hydraulic cylinder 41 via a pin 64.

Further, a guide rod 66 is fixedly supported by a locking pin 67 on a support portion 53b integrally formed on the lower portion of the bevel case 53, and this guide rod 66 is formed on the lower portion 45d of the vertical conveyance case 45. It is made to penetrate into the through hole 45e.

Furthermore, a switching shaft 68 is installed at the bottom of the hydraulic cylinder 41 in parallel to the axis of the cylinder.

This shaft 68 has two switch pieces 68a and 68b.
and a threaded portion 68c, the adjustment screw 63
It is attached to a bracket 69 projecting downward from the base end using nuts 70 and 70.

Furthermore, an L-shaped support plate 71 for mounting the detection device and an L-shaped entrance guide rod mounting seat 72 are fixed to the lower part 45d of the vertical transport case 45 with the same set bolt 73°13. The entrance guide rod spring 16 is attached to the bent portion 72a of the mounting seat 12 using a bolt 74 and a nut 75.
is attached.

Further, a rod position detecting device such as a limit switch 77, 78 is screwed in close proximity to the bent portion 71a of the support plate 11, and the switching actuating piece of each limit switch 77, 78 is a so-called actuator 77a, 78a into the window 45f provided in the vertical conveyance case 45, and press the button at the stroke end of the hydraulic cylinder 410 rod side to switch one limit switch 11, and the other limit switch 78 at the stroke end on the anti-rod side. It is equipped to work.

Each of these switches 77 and 78 has normally closed contacts 77b and 78b, and one contact 77b
is provided in series with the shallow handling signal circuit S (see FIG. 5), and the other contact 78b is provided in series with the deep handling signal circuit.

On the other hand, the detection devices 38, 39, and 40 described above include a microswitch 19 having a normally open contact 79a and a normally closed contact 80.
This device is equipped with a microswitch 80 having a contact point 81b and a microswitch 81 having a normally open contact 81a.

Next, the hydraulic circuit for supplying hydraulic oil to the hydraulic cylinder 41 will be explained with reference to FIG. Further, the chamber 41c on the other side is directly connected to the tank 83.

However, between the four hydraulic cylinders and the tank 83, there are solenoids 84 and 85.
A board type directional control valve 86, a so-called electromagnetic switching valve, is provided.

Further, a relief valve 81 is connected between the discharge side of the hydraulic pump 82 and the tank 83.

Next, an electric circuit accompanying such a hydraulic circuit will be explained with reference to FIG. 5.
0 contacts 79a and 80b are connected respectively, and a normally closed contact of one limit switch 7T is connected between the output side of one contact 79a and the ground. 7b and the solenoid 85 are connected in series in this order, and the output side of the other contact 80b is the normally open contact 81a of the microswitch 81, the normally closed contact 78b of the limit switch 78 on the other side, and the solenoid 8.
4 are connected in series in this order.

Further, a manual switch 90 for cross-cutting is connected between the battery 88 and the contact 77b, and a manual switch 91 for deep handling is connected between the battery 88 and the contact 78b.

In addition, the button 44a in FIG. 3 is a long hole formed in the upright plate 44, and 92 is a fulcrum provided on an inverted triangular protrusion 45g formed at the lower end of the vertical conveyance case 45 in order to pivot the case 45. It is the axis.

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

When performing combine harvester work, after switching the select switch 89 to the automatic operation side and turning it on, the tip of the harvested husk P that has been lifted and transported by the vertical transport device 37 is, for example, shown in FIG. As shown in the figure, when the sensor arm of the nearest detection device 40 hits the sensor arm, the normally open contact 81a of the microswitch 81 turns on and excites one solenoid 84, so the switching valve 86 switches and the flow from the hydraulic pump 82 is turned on. Since hydraulic oil is supplied to the chamber 41e on the other side of the hydraulic cylinder 41, the piston rod 41a
With the backward movement, the vertical conveyance device 31 swings in the direction of arrow a (deep handling side) in the figure, and its inclination angle becomes steeper.

Therefore, the culm P is displaced toward the deep handling side.

Due to the displacement of the shell culm P toward the deep handling side, the tip of the shell culm P comes into contact with the sensor arm of the central detection device 39, turning off the normally closed contact 80b of the microswitch 80, or turning off the piston rod 41a. moves at stroke end 1 on the opposite rod side and turns off the normally closed contact 78b of one limit switch 78 by the switch piece 68b provided on the switching shaft 68, the energization to the solenoid 84 is cut off, so the switching valve 86 is restored to the neutral position by the action of a spring, the supply of hydraulic oil to the hydraulic cylinder 41 is cut off, and the hydraulic oil is directly returned to the tank 83.

Next, a tall culm P is conveyed by the vertical conveyance device 37, and when the tip of the culm P hits each sensor arm buttoned on each detection device 38, 39, 40, a micro switch 80
The normally closed contact 80b of the microswitch 79 is turned off, and the normally open contact 79a of the microswitch 79 is turned on.

This normally open contact? When 9a is turned on, power is applied from the battery 88 to the other solenoid 85 via the select switch 89 button and the contacts 79a and 77b.
The switching valve 86 switches in the opposite direction to the above, and the hydraulic pump 8
2 is supplied to the → chamber 41b of the hydraulic cylinder 41, and as the piston rod 41a moves forward, the vertical conveyance device 31 swings in the direction indicated by the arrow in FIG. However, the angle of inclination becomes gentler.

Therefore, the culm P is displaced toward the planking side. Due to the displacement of the shell culm P toward the planking side, the tip of the shell culm P separates from the sensor arm of the innermost detection device 38, turning off the normal point Ia 79a of the microswitch T9, or When the piston rod 41a moves to the stroke end on the rod side and the normally closed contact 77b of the other limit switch 77 is turned off by the switch piece 68a provided on the switching shaft 68, the energization to the solenoid 85 is cut off, so that the switching valve is closed. 86 is restored to the neutral position by the action of a spring, cuts off the supply of hydraulic oil to the hydraulic cylinder 41, and causes the hydraulic oil to flow directly back into the tank 83.

By this automatic adjustment of the length and shortness of the culm, the tip of the culm 1b is maintained at a predetermined handling position regardless of the length of the plant, and the threshing process is performed at the position where the threshing load is minimum.

When adjusting the handling depth of long and short culms by manual operation, turning on one manual switch 90 moves the vertical conveying device 3T to the planking side, and turning on the other manual switch 91 moves the vertical conveying device 3T to the vertical direction. The conveying device 37 can be swung toward the deep handling side.

As is clear from the above embodiments, the present invention has a structure in which the handling depth is automatically adjusted by swinging the vertical conveyance device 3T according to the culm length of the cut husk, and the hydraulic pressure 7 cylinder 41 for adjusting the handling depth is used. In addition, a switching shaft 68 for controlling the power transmission scheme collar and detecting the operating range is provided approximately parallel to the fuselage side supporting case 45, and the collar 46 is slidably supported by the case 45. 68a, 68
The switching shaft 68 to which b is attached is integrally movably connected to the piston rod 41& of the hydraulic cylinder 41, and each of the switch pieces 68a.

The limit switches 77 and 78 for position detection are respectively fixed to the case 45 so as to face the hydraulic cylinders 68b, and since the collar 46 can be formed into a long length like the hydraulic cylinder 41, the vertical conveyance drive shaft can be strengthened. Supportable,
It is possible to prevent their twisting and the like and ensure good drive transmission, and the hydraulic cylinder 41, collar 48 and switching shaft 68, each of which is long, can be compactly mounted on the same member using the case 45. These limit switches 77 and 78 can be easily assembled and disassembled, and can be easily installed in a narrow space. The electrical wiring can be shortened and fixed along the oil pipe of the hydraulic cylinder 41, for example, and has remarkable effects such as easy maintenance and inspection, safe handling, and great practicality. It is something to play.

[Brief explanation of the drawing]

FIG. 1 is a side view of the combine harvester according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a partially sectional front view of the long and short culm automatic adjustment device 42, and FIG. 42, and FIG. 5 is its electrical circuit diagram. 31... Vertical conveyance device, 41... Hydraulic cylinder, 42... Long/short culm automatic adjustment device, 77.
78...Limit switch (Rondo position detection device), 84°85...Solenoid, 86...
...Directional control valve.

Claims (1)

[Claim for Utility Model Registration] In a structure in which the handling depth is automatically adjusted by swinging the vertical conveyance device 31 according to the culm length of the cut husk culm, a hydraulic cylinder 41 for adjusting the handling depth and a collar 46 for power transmission scheme are provided. In addition, a switching shaft 68 for detecting an operating range is provided approximately parallel to the case 45 for supporting the body side, and the collar 46 is attached to the case 45.
The switch pieces 68a are slidably supported and spaced apart from each other. The switching shaft 68 to which the switching shaft 68b is attached is integrally and movably connected to the piston rod 41& of the hydraulic cylinder 41, and each limit switch 77, 78 for position detection is arranged to face each of the switch pieces 68a, 68b, respectively.
An automatic length and short culm adjustment device for a combine harvester, characterized in that the device is configured such that the culms are fixed to the case 45, respectively.