JPS5913784Y2 - combine - Google Patents

Description

[Detailed description of the invention] The present invention is configured so that the culm harvested in an upright position by a lifting reaping section is transported rearward by a conveying device provided at the rear of the lifting reaping section. The present invention relates to a combine harvester that changes the shell culm posture to a sideways posture near the end of a rear conveyance device and supplies the grain to an on-board threshing device.

Generally, in order to elastically bias the clamping rail against the clamping chain, it is desirable that the elastic biasing structure allows for stable elastic clamping regardless of the increase or decrease in the amount of culms (harvest yield).

Conventionally, the structure of the shell culm conveying device used in this type of combine harvester for holding and transporting the shell culms was disclosed in Utility Model Application No. 51-16.
A technique disclosed in Japanese Patent No. 045 is known.

The clamping structure of this culm conveying device is such that a leaf spring is installed along the outside of the clamping rail (on the opposite side of the conveyor chain).
Further, the plate springs support the clamping rails in an arrangement having a width in the vertical direction.

This is because when transporting shell culms, when the amount of shell culms increases, the clamping rails move away from the outside (relative to the conveyance chain), and when the quantity of shell culms decreases, the clamping rails move closer to the inside (relative to the conveyance chain). It is configured to be able to perform clamping and conveyance in response to changes in the volume of the culm.

In other words, the displacement of this clamping rail is allowed only in the direction perpendicular to the middle direction of the leaf spring that supports the clamping rail, and the clamping force is maintained by the elastic biasing force of the leaf spring. .

According to this structure, when conveying the culm in an upright position, the culm can be conveyed while being held while adjusting the amount of conveyance of the culm, but the direction of displacement of the clamping rail is uniform with respect to the conveyance chain Therefore, when transporting the shell culm in an inclined position with respect to the transport surface formed by the opposing surfaces of the transport chain and the clamping rail, the transport culm The problem was that the conveyor chain was bent at the upper corner, making it difficult to properly connect it to the rear conveyor.

The purpose of this invention is to maintain a stable clamping force when transporting cut culms, regardless of increases or decreases in the amount of culm being transported or changes in the culm transportation posture. The purpose is to obtain a conveying and clamping structure that allows for smooth transfer to the subsequent conveying device while avoiding unnecessary bending of the shell culm at certain points.

The characteristic feature of the combine harvester of the present invention is that the culm harvested in an upright position by the lifting reaping section is transported rearward by a conveying device installed at the rear of the lifting reaping section. In a combine that changes the shell culm posture to a sideways posture near the end of the rear conveyance device and supplies it to the on-board threshing device, the shell culm stock base is pinched and conveyed in a substantially sideways posture near the rear conveyance device. To arrange the clamping rail for the clamping conveyance band, a plate spring having a surface along the vertical direction is supported in a cantilever shape toward the lower side of the conveyance side, and the side surface of this plate spring is placed on the side of the clamping conveyance band. at the free end in the length direction of the leaf spring,
The clamping rails are connected to each other, and space portions are provided at the upper and lower positions of the clamping rails to allow the clamping rails to rotate around an imaginary axis along the length direction as the leaf spring is twisted. This is what we have set up.

The effects of the above mechanism are as follows.

A cross-sectional view of the transport mode with the transport shell culm in an upright position is as follows:
The culm is held between three points: the upper and lower link plates of the conveyor cheno, and the clamping rail, and changes in the amount of culm conveyed are handled as follows:
The clamping rail moves away from the conveyor chain to transport the culm in a clamping state that corresponds to changes in the volume of the culm, and when the culm is transported in a horizontal position, the tip of the culm is When the entire culm is tilted so that the sides are tilted inward and the stump side is moved outward, a force acts on the stump side of the culm to lift the culm pressing surface of the clamping rail upwards. For this reason, the leaf spring supporting the shell culm holding rail is twisted and elastically deformed, and while allowing the clamping rail to displace above the shell culm pressing surface, the clamping rail maintains the clamping force. The culm is mainly held at two points: the upper link plate of the conveyance chain and the culm pressing surface of the clamping rail displaced upward, and almost no bending force acts on the culm.

The effects of the above configuration are as follows.

The simple structure of simply supporting the clamping rail in a cantilevered manner with a leaf spring allows for an increase or decrease in the amount of the culm being conveyed during culm transportation, and also prevents the culm from bending when changing the culm conveying posture. It has now been possible to transport the shell culm in a state with little disturbance of posture, which is suitable for transferring the shell to the rear transport device.

Embodiments of the configuration of the present invention will be described below with reference to the drawings.

The figure shows a combine harvester, in which a planted shell lifting device 1 is installed at the front of the machine, and near the ground behind this lifting device 1,
A reaping device 2 is disposed to constitute a lifting reaping section.

Further to the rear, there is a rear conveyance device 5 that delivers the cut husk to the feed chain 4 attached to the threshing device 3 mounted at the rear of the machine.
is installed.

The rear conveyance device 5 is composed of a tip locking conveyance device 6 and a stock head clamping conveyance device 7.

Further, the ear tip locking and conveying device 6 includes a conveyor body 9 with a locking claw 8 that locks on the tip side portion of the culm, and a thick first guide on which the lower surface of the locking claw 8 comes into sliding contact. It is configured to lock and transport the tip portion between a rail 11 and a thin second guide rail 10 located above the first guide rail 11.

Furthermore, a carry-in path 6a is constructed at the terminal end of the ear tip locking and conveying device 6 to carry the ear tip section in a substantially lateral direction toward the inside of the machine while locking the ear tip section. The structure is such that the posture of the culm, which is held at the terminal end of the shell, can be changed to a horizontally lying posture.

On the other hand, the stock clamping and conveying device 7 includes a first conveying section 7a, a second conveying section 7b, and a third conveying section 7, which are respectively configured from the conveying start end.
C, and among these, the second conveying section 7b is configured to be able to vertically swing around the horizontal axis X at the starting end, and by vertically swinging the second conveying section 7b, the first conveying section 7
The stock capital inheritance position from a is changed, and the third
A so-called root depth changing mechanism is configured in which the stock head delivery position with respect to the transport section 7C is changed, and the stock head position where the stock is delivered from the third transport section 7C to the feed chain 4 is changed.

Furthermore, the first and second guide rails 11 of the tip conveying device 6
．． 10, the clamping rail 7C' of the third conveying section 7C of the stock clamping and conveying device 7 that comes into elastic contact, and the feed chain 4.
The guide rail 4' is in elastic contact with the starting end of the feed chain 4, and is further located between the tip locking and conveying device 6 and the third conveying section 7C and above the starting end of the feed chain 4 in side view. A plate spring material 12 for pressing the culm is constituted by an integral unit 13, and this guide rail unit 1
3) A transmission shaft for transmitting driving force to the culm lifting device 1 is inserted and detachably attached at one point to the protective case 14 which serves as a support for supporting the lifting and reaping section.

The unit structure will be explained in detail below.

That is, the pulling device 1, the transmission shaft protection case 14, and
Of the strong truss structure composed of a member (branching rod) 15 connecting these two 1 and 14, the protective case 14
A bracket 16 is welded to the bracket 16, and a bracket 18 of the main frame 17 of the unit 13 is removably attached to the bracket 16 with bolts.

First and second arms 19 and 20 are welded to the main frame 17 of the unit 13, and U-shaped brackets 21 and 22 are attached to each of these arms 19 and 20. The first and second guide rails 11 and 10 of the tip conveying device 6 are welded to the upper part of 21 and 22.

A pivot bracket 23 for the guide rail 4' for the feed chain 4 is welded to the second arm 20.
A base end portion of the feed chain guide rail 4' is pivotally attached to this pivot bracket 23 around a horizontal axis P, and this base end portion is pulled up and biased upward by a spring 24. The guide rail 4' is elastically pressed against the starting end of the feed chain.

The clamping rail 7C' of the third conveyance section 7C, which constitutes a part of the stock conveyance device 7, is connected to the unit main frame 1.
7 via a leaf spring 25, and the leaf spring 25 faces toward the lower side of conveyance, and the width direction of the leaf spring faces in the vertical direction (culm length direction of the vertical shell culm).

The rail 70' is attached to a plate spring attaching portion 7C'' extending from the clamping rail 7c' toward the tip side.

According to such a configuration, the culm cut by the lifting reaping units 1 and 2 is transported rearward by the rear transport device 5 in a substantially vertical position with the ear tip locked and the stock base clamped, and,
At the terminal end of the conveying device, the tip side portion is carried into the body in the tip bringing-in path 6a of the tip locking and conveying device 6, and the culm posture is changed to a sideways posture.

In this case, the stock side portion is clamped by the clamping chain (clamping conveyance band) 7d of the third conveyance device 7C and the rail 7C', and at this time, as shown in FIG. When the amount of shell culm increases above a certain level, the leaf spring 25 is elastically displaced in a direction perpendicular to the surface due to the contact reaction force of the clamping rail 7C' contacting the shell culm, and the spring surface is twisted. As a result of the displacement, the leaf spring as a whole appropriately elastically presses the enlarged culm with a small elastic displacement.

[Brief explanation of drawings]

The drawings show an embodiment of the combine harvester according to the present invention, and FIG. 1 is an overall side view, FIG. 2 is a perspective view of the main part, FIG. 3 is a rear view of the main part, and FIG. 4 is a perspective view of the main part. 1.2... Lifting reaping section, 3... Threshing device, 5... Rear conveyance device, 7c'...
・Pinching rail, 7d...Pinching conveyor.

Claims (1)

[Scope of utility model registration request] The structure is such that the culm harvested in an upright position by the lifting reaping units 1 and 2 is transported rearward by a conveying device 5 provided at the rear of the lifting reaping units 1 and 2, and this rear conveying device 5 In the combine harvester, the culm posture is changed to a sideways posture near the end of the culm, and the husks are fed to the on-board threshing device 3. In the combine harvester, the husk stock base is held and conveyed in a substantially sideways posture near the end of the rear conveyance device 5. In order to arrange the clamping rail 7c' for the conveyance belt 7d, the plate spring 25 having a surface along the vertical direction is supported in a cantilevered manner toward the lower side of the conveyance side, and the plate spring 25 is supported from the side surface of the plate spring 25 in a cantilever shape. The clamping conveyance belt 7d
The clamping rail 7c' is connected to the free end of the leaf spring in the longitudinal direction at a position apart from the side, and the clamping rail 7c' is connected to the upper and lower positions of the clamping rail 7C' to prevent twisting of the leaf spring 25. A combine harvester characterized by being provided with a space that allows the clamping rail 7C/ to rotate around an imaginary axis along its length.