JPH0339004Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a combing waste discharging device for an auxiliary lifting case that is provided approximately at right angles to a main lifting device of a reaping section of a combine harvester or the like.

<Conventional technology> Conventionally, in the reaping section of combine harvesters, etc., for example,
As shown in Publication No. 59-13780, in addition to the main lifting device that guides the grain culm in front of the reaping section to stand up in the direction of the cutting blade as the machine moves, there is also a main lifting device installed in a direction perpendicular to this, mainly for the reaping section. Some machines are equipped with an auxiliary lifting device in front of the grain culm that has fallen down in the left and right direction to make it stand upright and distribute it to the left and right. It has a structure that protrudes outside the case, and as the chain rotates, the tip of the claw raises the grain culm.

Then, in order to discharge combing debris, etc., the case is opened only near the turning part of the claws at the upper and lower ends of the non-working side (the downward rear side of the slanted case) where the claws do not protrude. The non-active side of the case is closed off by attaching a cover with a U-shaped cross section to the other parts, and the inside of the U-shape is used to remove debris such as straw scraps and soil that have been combed up by the lifting claws. The structure was such that it would be transmitted to the Ochibe Eko area and released.

<Problems to be solved by the invention> However, with the above structure, not only is the removal of combed debris insufficient, but when the nails pull up the grain culm, the water-containing mud is carried around and this waste is removed. There was a problem in that mud, straw debris, etc. adhered together inside the case, and when the amount of adhesion became large, the auxiliary lifting device became inoperable. On the other hand, if the non-active side of the case is left completely open, the side of the main drawer case will get dirty and cause peeling of paint and rust, and if other equipment is installed below it, There is a problem that mud, debris, etc. may fall onto the surface and have an adverse effect.

<Means for solving the problems> The device of the present invention for solving the above problems is as follows:
A main lifting device that hooks the grain culm from the horizontal direction on the reaping part and pulls it upward; and a main lifting device that hooks the grain culm from the vertical direction and pulls it upward at the side end of the main lifting case of the main lifting device. In a mechanism provided with an auxiliary lifting device for lifting the auxiliary lifting device, the lifting claw in the auxiliary lifting case protrudes from the rear side of the auxiliary lifting case which is in an inactive state when the lifting claw falls down, and the lifting claw protrudes from the back side of the auxiliary lifting case and removes straw debris, etc. The above-mentioned auxiliary lifting case covers the outside and lower part of the body of the opening part, and the tip is the main lifting case, so that straw debris etc. can come into contact with or close to the outer surface or front of the case. It is characterized by the provision of a guide cover that prevents the robot from falling further outside the body and that restricts the lying and standing states in contact with the lifting claw protruding from inside the auxiliary lifting case.

<Function> The mud and straw debris lifted to the upper part of the auxiliary lifting case by the lifting claw reaches the chain inside the auxiliary lifting case and the upper turning part of the lifting claw, and is discharged from the opening part to the outside of the case. However, at this time, the mud and straw debris are guided by the guide cover to the main lifting case side located inside the fuselage of the auxiliary lifting case, and are discharged, and are discharged from the guide cover and the lower front side of the main lifting case. It falls to the ground without falling along the edge and onto other devices, etc. As shown in FIG. 2, this falling point is a position in front of the lower end of the auxiliary lifting device 23, where the grain culm does not pass between the inner guide 17a of the divider 17 and the auxiliary lifting device 23 (the grain culm does not pass through the inner guide 17a). (and is pushed inward), and fallen mud and straw debris will not get on the grain culms and will not be raised again and brought into the case. In addition, the protruding part of the lifting claw is in contact with the guide cover at the open part of the auxiliary lifting case, but at the top of the case it is in a lying down position along the internal endless chain, and as it goes downward, it is gradually raised to an upright position. It is guided so that it stands up completely when it is removed from the guide cover.

<Example> Below, an example in which the device of the present invention is applied to a combine harvester for two-row cutting will be described in detail with reference to the drawings.
The figure shows an overall view of a combine harvester, in which the machine body 1 has a preprocessing section 5 in front of a frame 3, a threshing section 9 on the frame 3 supported on a running section 7, and a grain culm to the threshing section 9. A feed chain 11 etc. to be introduced is provided. An illumination light 13 for use in manual handling work is attached to the end of the upper cover of the inlet of the threshing section 9.

The preprocessing section 5 has left and right dividers 17 and a middle divider 19 attached to the front lower part of the preprocessing frame 15, and two main pulling devices 21 and 23 are installed diagonally in front of one of these dividers. An auxiliary lifting device 25 is obliquely installed at the outer end of one of the main lifting devices 23 so that the main lifting device 23 and the cross section of the case are perpendicular to each other.

At the bottom of the pre-processing section 5, clipper-like cutting blades 27 are attached in the left-right direction, and at the top thereof, a scraping device 29 is installed that bites the harvested grain culm and sends it backward.
However, a conveyance device 31 for conveying the grain culm to the feed chain 11 is further provided at the rear upper part thereof. The auxiliary lifting device is fixed at its lower end near the tip of the preprocessing frame 15 behind one of the dividers 17 via a bracket 33, and is attached at its upper end via a drive unit case 35 for power transmission.

The combine is provided separately into a narrow guide 37 and an upper narrow guide 39, and the lower narrow guide 37 is fixedly and diagonally provided so as to protrude outward and rearwardly upward from the rear of the divider 17 with respect to the machine body 1. ing. Also, the above narrow guide 39
The front end is rotatably inserted forward and supported at a relatively high position such as the upper end of the bracket 33, and the base end is rotatably supported on the body 1 side on the way to the rear end. It is connected and supported by a support rod 41 that can be expanded and contracted freely. The upper narrow guide 39 can be set at any angle on the side of the body by extending and contracting the support rod 41 and determining its rotational position, as shown by solid lines and imaginary lines in FIG.

As a result, the upper narrow guide 39 can be used as a manual handling guide for guiding grain culms to the threshing section when only manual handling is performed without reaping at the highest rotational position, and at lower rotational positions. In this position, it can be used as a narrow guide to push aside unharvested rice, etc. that may obstruct reaping. At this time, the lower narrow guide 37 hits near the root of the grain culm in the uncut field and pushes it away to the side of the machine (see Figure 2), and at a higher position, the upper narrow guide pushes it away. It has a structure that disperses the force acting on the grain culm in the uncut field and prevents problems such as getting caught in the narrow guide and damage, without applying excessive force to the grain culm in the uncut field.

1 to 3 show the structure and operation of the hoisting device. The proximal end portions of the lifting pawls 47 are rotatably supported at regular intervals on an endless chain 45 that is wound around the case 43. The upright guides 49 and 51 inside constitute an active side that runs upright, and the outside upper part of the case 43 has no upright guide 49 and constitutes a non-active side where the pawl 47 runs along the chain 45 in a laid down position. ing.

On the outside of the main lifting case 43, an auxiliary cover 43a is formed to cover the outer surface and guide the lifting claw 47 so that the upper part thereof maintains the lying position and the lower part thereof maintains the upright position. This auxiliary cover 43a is the main lifting case 43
The lower end of the case has a structure in which the raising claw 47 protrudes toward the outside of the body so that it can be erected into an operating state.

The auxiliary lifting case 5 is arranged in a direction perpendicular to the main lifting case 43 at an outer position.
A chain wheel 55 is also pivotally supported at the upper and lower ends of the auxiliary lifting case 53, and an endless chain 57 is wound around both chain wheels 55. Similarly to the above, the chain 57 has a lifting pawl 59. The base end is supported by a shaft so that it can be rotated up and down. On the outer periphery of the auxiliary lifting case 53, a lifting claw 59 is connected to a lifting guide 6.
1, both the working side that takes the upright position and the non-working side that takes the lying position form an open part 63 from which the claw 59 can protrude. When driven, centrifugal force causes it to stand up downward and try to protrude out of the case.
The lifting claw 59 is attached to the following guide covers 65, 6.
7 regulates its standing and lying postures.

That is, on the non-operating side (lower side) of the auxiliary lifting case 53, one end (guide side piece 65a) of the cross section is fixed to the outer surface of the case, and is curved or curved inward so as to cover the outside and lower part of the opening part 63. A guide cover 65 is provided so that the other end (guide bottom piece 65b) comes close to or comes into contact with the outer surface (front surface at the lower part) of the auxiliary cover 43a while being bent.

In the auxiliary lifting case 53, straw waste and mud carried around from the lower part by the lifting claws 59 are discharged out of the case through the opening 63 on the non-operating side of the auxiliary lifting case 53. The guide cover 65 prevents the guide cover 6 from falling to the outer side of the main lifting case 43.
5 and the lower front surface of the auxiliary cover 43a, and finally falls on the ground behind the divider 17 where there are no other devices and where grain culms do not pass.

Furthermore, above the auxiliary lifting case 53, the lifting claw 59 is restricted to a laid down position by the inner surface of the guide bottom piece 65b, but below the case. The guide bottom piece 65b has a large bending angle or radius of curvature with the guide side piece 65a so that the raising claw 59 sequentially assumes a downward standing position.
When the raising claw 59 is disengaged from the guide cover 65 at the lower part of the case, it is erected by the centrifugal force of automatic operation and operation, and is erected in preparation for the next operating state.

FIGS. 5 and 6 show the lifting claw 59 (or 4
7) is shown, and in this example, the raising claw 59
is driven together with the endless chain 57 to prevent damage to the claws and generation of noise due to the inside of the claw main body 59a negotiating with the endless chain 57 when changing from a standing posture to a lying posture the moment it comes off the grain culm. Therefore, once the claw main body 59a falls down at a certain angle, it does not fall any further and the inside of the claw does not come into contact with the chain.

That is, the chain connecting pin 5 at the rear in the driving direction of the mounting element 58 in the chain to which the pawl 59 is attached.
8a protrudes from both sides of the chain, and the claws 5
A claw 5 is provided on the sliding surface 59b of 9 that contacts the upright guide 61.
9 falls down at a certain angle, a recess 59c engages with the connecting pin 58a and stops the falling rotation of the claw.
This is the structure that formed the . 60 is a pin for attaching the claw 59 to the mounting element 58;
An edge-shaped protrusion 60a is protruding from the circumferential surface of the head of the pin 0. When the pin is inserted into the insertion hole 59d on the claw 59 side, it bites into the inner circumferential surface and fixes the pin itself. This structure improves the fixation of the pin, and eliminates the inconvenience that occurs when the claw 59 cracks from the insertion hole 59d, which occurs when the pin has a conical head.

FIGS. 7 and 8 show a structure in which the cutting blade 27 is divided into left and right parts and driven in opposite directions.
In order to prevent dirt, pebbles, etc. from entering the gap between the left and right cutting blades 27a, 27b and interfering with their operation, the adjacent end surfaces of each of the cutting blades 27a, 27b are sloped to prevent objects from being held during operation. In addition, it is necessary to prevent mud, sand, pebbles, etc. from entering the cutting blade boundary area on fixed objects such as the pretreatment frame 15 located at the lower part of the cutting blade and at the boundary area between the cutting blades 27a and 27b. Intrusion prevention device 16 that prevents intrusion by pushing left and right as the aircraft advances.
is provided.

FIGS. 9 and 10 show details of the grain culm raking device 29, and the grain culm cut by the cutting blade 27 is rotatably supported on the cutting blade 27 so that the teeth mesh with each other and rotate. Two star foils 71, 72
The grain culm conveying device 31 is a device that is carried toward the rear grain culm conveying device 31 by a feeder chain 73 and a feeder guide 74 installed in the upper direction.

A finger case 75 that protrudes downward in a cylindrical shape within the inner diameter of each star foil is concentrically fixed on the bottom surface of each of the star foils 71 and 72, and is close to a diagonal line of the circumferential surface of the finger case 75. In two directions, each star foil 71 at that position,
A protrusion 79 along the tooth pattern 72 is provided. Inside each finger case, a pin 77 is attached to the base end so that the rotation axis is located as far outside as possible from the respective axes of the star foils 71 and 72.
two fingers 76a each pivotally supported by
76b is rotatably provided along the bottom surface of the star foil. The pin 77 is fixed to a member 78 separate from each star foil 71, 72, and each finger 76a, 76b is supported at the tip of a protrusion 79 so that it can be inserted or removed at any time. When 72 rotates, it has a different fulcrum from the star wheel and rotates at its own radius of rotation.

As a result, the raking range of the grain culms is widened by the finger protrusion, and the grain culms on the left and right sides of both star foils 71, 72 are also covered over a wide range.
It has the effect of preventing spillage of grain culms and disturbance of conveyance.

FIG. 11 shows an example of the structure of a grain culm conveying device. The claw 83 is made to protrude perpendicularly to the grain culm 82 which is inclined along the cover 84 in order to enhance the latching effect. The tip of the grain culm 83 is bent upward by an angle θ to match the inclination of the grain culm 82.

FIG. 12 shows the installation state of the illuminating light 13 in the grain culm carrying work section at the entrance of the threshing section 9. A lighting lamp is built into the case 92 of the illuminating light 13, so that the working section in front can be illuminated during nighttime work. On the top surface of the case 92, there is an instruction mark 93 that indicates the correct position for inserting the ear tip into the threshing section 9 when the lamp lights up.
A display section 94 is provided that emits light and can be easily checked from the driver's seat.

As a result, it is easier to confirm the suitability of the ear tip position compared to the instruction mark 93, etc., which was conventionally displayed by pasting or the like on the front of the entrance to the threshing section 9, and the work can be done more appropriately. Furthermore, since the lighting lamp itself can be used, there is an advantage that the cost is low.

<Effects of the invention> According to the combing waste discharging device configured as described above, since an open part is provided on the non-operating side of the auxiliary lifting case, straw waste, mud, etc. are always prevented from adhering together with the lifting claw. This solves the problem of causing an inoperable state due to the casing, and in addition, the mud and debris discharged outside the case do not fall as they are, and the main lifting mechanism eliminates the need for other machinery on the front side of the case, and the grain culms can pass through. Since it is guided to an unknown position and falls to the ground, it does not interfere with other machines or work at all. Therefore, it has many advantages such as no damage to the paint on the covers on the side of the pretreatment section, rust, or other problems such as damaging the appearance of the machine due to the waste and mud discharged. be.

[Brief explanation of the drawing]

1A and 1B are sectional views taken along lines 3A and 3B showing the main parts of the device of the present invention, FIG. 2 is a front view of the lifting device, FIG. The figure is an overall perspective view of a combine harvester equipped with the device of the present invention.
Figures 5 and 6 are enlarged perspective views and sectional views showing the detailed structure of the pulling claw, Figures 7 and 8 are plan views and side views showing the structure of the cutting blade, and Figures 9 and 10. Both figures are a plan view and a sectional view of the main parts showing the grain culm raking device, Fig. 11 is a sectional view of the main parts showing an example of the structure of the grain culm conveying device, and Fig. 12 is an enlarged view showing the illumination light at the entrance of the threshing section. FIG. 1: Airframe, 5: Pre-processing section, 3: Main lifting device,
25: Auxiliary lifting device, 43: Main lifting case,
43a: Auxiliary cover, 45: Endless chain, 47:
Lifting claw, 49: Raising guide, 53: Auxiliary lifting case, 57: Endless chain, 59: Raising claw, 6
1: Standing guide, 63: Opening part, 65: Guide cover, 65a: Guide side piece, 65b: Guide bottom piece.

Claims (1)

[Scope of utility model registration request] A main lifting device that hooks the grain culm from the horizontal direction on the reaping part and pulls it upward; and a main lifting device that hooks the grain culm from the vertical direction and pulls it upward at the side end of the main lifting case of the main lifting device. In a mechanism provided with an auxiliary lifting device for raising the auxiliary lifting device, the lifting claw inside the auxiliary lifting case protrudes from the rear side of the auxiliary lifting case which is in an inactive state when it is collapsed, and the lifting claw protrudes from the back side of the auxiliary lifting case and removes straw debris, etc. The above-mentioned auxiliary lifting case covers the outside and lower part of the body of the opening part, and the tip is the main lifting case, so that straw debris etc. can come into contact with or close to the outer surface or front of the case. Discharge of combed debris from the auxiliary lifting case in the reaping section, which is provided with a guide cover that prevents the falling to the outside of the machine and restricts the falling and standing states in contact with the lifting claw protruding from inside the auxiliary lifting case. Device.