JPH02203711A - Thresher - Google Patents

Abstract

PURPOSE:To reduce the relative longitudinal movement between a threshing cylinder and a receiving net by disposing a control mechanism for moving the threshing cylinder to a rear position in accordance with the degree of a threshing load when the threshing load acted on the threshing cylinder exceeds a set value. CONSTITUTION:When a load acted on a threshing cylinder 7 is increased and exceeds the initial stress of an elastomer 23, a fixed flange 22 and a movable flange 19 are relatively rotated and the movable flange 19 is transferred in the direction of the arrow (a) based on the rotation axis on which the movable flange 19 is threadedly attached. Even when the front side plate 24 of the threshing chamber pivotally supported on a rotation shaft 10 is transferred in the direction of the arrow (b), the relatively longitudinal movement of the threshing cylinder 7 to the receiving net 9 can be reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a system in which a handling cylinder is mounted on the front and rear side plates of a handling chamber, and
This invention relates to a threshing device in which a receiving net is arranged below the handling barrel.

[Conventional technology]

Generally, in the above-mentioned threshing device,
As shown in Publication No. 6, by inserting a bow protruding above the receiving net between the handling teeth installed in the handling cylinder so as to interfere in the radial direction of the handling cylinder, We are trying to reduce the shallowness.

[Problem to be solved by the invention]

The handling teeth of the handling barrel are driven into the culm, which is held by the feed chain and fed backwards with the tip of the head in a lagging position, and rotate toward the tip of the head. It exerts a conveying action that pushes it backwards.

Therefore, the reaction force of the conveyance force that presses the shell culm rearward acts on the handling barrel as a forward thrust force, and this force is supported by the front and rear side plates of the handling chamber, causing the front and rear side plates to be slightly distorted forward.

In this case, when a large amount of husk is supplied and the threshing load increases, the thrust force acting on the handling drum also increases, and the distortion of the front and rear side plates becomes large, and depending on the location, the handling teeth and bow metal may bend in the direction of the rotation axis of the handling drum. There was a risk that there would be interference and contact, causing noise and damage to the handling teeth and bow metal.

An object of the present invention is to eliminate the risk of interference contact between the handling teeth and the bow metal in the direction of the rotation axis of the handling barrel even if the front and rear side plates of the handling chamber are distorted due to increased threshing load.

[Means to solve the problem]

To achieve the above object, the present invention provides, in the threshing device described at the beginning, when the threshing load acting on the handling drum exceeds a set value, the handling drum is moved relative to its rotation axis according to the degree of threshing load acting on the handling drum. It is characterized by being provided with an adjustment mechanism for automatically moving the position to the rear.

[For production]

According to the above configuration, as the threshing load becomes larger than the set value, the handling cylinder moves toward the rear with respect to its rotation axis, that is, the front and rear side plates, so that even if the front and rear side plates are distorted toward the front, , it is possible to ensure a distance in the front-back direction between the handling teeth and the 6-karat gold so that they do not interfere with each other.

〔Effect of the invention〕

Therefore, even if the front and rear side plates of the handling chamber that supports the handling drum are distorted toward the front due to an increase in the threshing load, the handling teeth of the handling drum and the 6-metal wire of the receiving net will interfere with each other in the direction of the rotational axis of the handling drum. I was able to prevent this.

(Example) Hereinafter, a case where an example of the present invention is applied to a harvester will be described with reference to the drawings.

FIG. 8 shows a harvester equipped with a threshing device (15). This harvester is equipped with a crawler traveling device (
11), a driving part (12), a control part (13), etc. of a walk-behind transport vehicle.
4), and a threshing device (15) is mounted on this loading platform (I4) in a state where power is transmitted from the driving portion (12).

An output shaft (18) of an engine (17) disposed in the engine room (16) of the driving section (12) and a counter pulley (20) for transmitting power to the crawler traveling device (11). A belt I- (21) is wound around the belt (21), and a tension pulley (27) is disposed on this belt (21) so as to be able to be pressed and separated, thereby forming a running latch (1). The tension pulley (2
A running latch lever (2) swingingly operates a tension arm (28) having a tip (7) pivotally supported at the tip thereof.
3).

As shown in FIG. 5, the tension pulley (27
) can be swung by the tension arm (28) made of plate springs, and the moving latch lever (2) and the wire locking part (29) integrally formed with the tension arm (28). What is clutch wire (
26) are interlocked and connected.

Since this tension arm (28) can bias the belt (21) by its own elasticity, it is economically advantageous because a dedicated spring or the like as in the conventional art can be omitted.

As shown in FIGS. 6 and 7, the latch lever (2) for driving is configured to operate the parking brake.

That is, the grip (3) is pivotally attached to the upper end of the rod (5), which is shaped like a cross when viewed from the front and is fixed to the upper surface of the lever plate (4), so as to be able to swing from side to side. ) and the lower end of the grip (3), a brake wire (6) is interlocked and connected by passing through the inside of the rod (5). Therefore, by tilting the grip (3), the parking brake can be activated by pulling the brake wire (6).

The rotation axis of the grip (3) for operating the parking brake (
Pl) and the clutch lever (
Since they are perpendicular to the rotation axis (P2) as shown in 2), they can be operated separately without interfering with each other, and the status of the parking brake can be seen at a glance by looking at the grip, which helps prevent erroneous operation. It is valid.

As shown in FIG. 1, the threshing device (15) includes a handling cylinder (7
) are mounted on the front and rear side plates of the handling chamber (8), and a receiving net (9) is arranged below the handling drum (7), and the threshing load acting on the handling drum (7) is set. When the value exceeds the above value, the handling cylinder (7) is moved to its rotation axis (10) according to the degree.
Adjustment mechanism (A) that automatically moves the position backward relative to the
is provided.

As shown in FIG. 2, the adjustment mechanism (A) mainly includes a movable flange (19), a fixed flange (22), and an elastic body (
23) and a rotating shaft (10), and are provided both at the front and rear of the rotating shaft (lO) on which the handling cylinder (7) is mounted.

To explain the front part in detail, it is fixed to the rotating shaft (10) with a bottle so as to rotate integrally, and has a plurality of drive protrusions (22
a) and a handling cylinder (7).
) are connected with bolts, and the movable flange (
19) are interlocked with each other via a ring-shaped rubber elastic body 23).

To explain the operation, normally, the torque input to the rotating shaft (10) is transmitted in the order of the fixed flange (22), the elastic body (23), the movable flange (19), and the handling cylinder (7).
Due to the elastic body (23) given the initial stress, no relative rotation occurs between the fixed flange (22) and the movable flange (19). Then, the threshing load increases and the elastic body (23
) exceeds the initial stress (i.e. set value), the fixed flange (22) and the movable flange (19) rotate relative to each other, and the movable flange (19) rotates relative to the stem culm with respect to the rotating shaft (10) to which it is screwed. It begins to be displaced toward the downstream side of conveyance (in the direction of arrow (A) in FIG. 1). As the threshing load increases, the amount of relative rotation between the movable flange (19) and the rotating shaft (10) also increases, so the front plate (24) of the handling chamber (8) that pivotally supports the rotating shaft (10) Even if the stem culm is transferred to the upper side (in the direction of arrow (0) in Fig. 1), it is possible to minimize the relative back-and-forth movement of the handling cylinder (7) with respect to the receiving net (9). , interference between the handling tooth (25) and the 6-karat gold (30) can be prevented.

By selecting the rubber hardness of the elastic body (23) and the initial stress, the value of the set value of the threshing load that causes relative rotation between the movable flange (19) and the rotating shaft (10), and the threshing of the handling barrel can be adjusted. The degree of rearward displacement associated with an increase in load can be set arbitrarily.

As shown in FIGS. 3 and 4, the crawler traveling device (1
1) consists of only two wheels, front and rear.

That is, the crawler traveling device (11) has drive rollers (3
1) and the tension roller (32).
3) and a claw label) (33
) Guide member (3
4).

The tension roller (32) is pivotally connected to an arm (35) that is swingably suspended from the loading platform (14), and the lower end of this arm (35) is connected to the main chassis fixed to the loading platform (14). It is connected to the shaft (37) of the driving roller (31) which is pivotally supported by the sea (36) by a rod (38) whose entire length is variable by a screw mechanism (B).

The rod (38) fits and connects a tension bar (39) and a bolt member (40) so as to be relatively movable in the longitudinal direction, and both (39), (40)
A screw mechanism (B) is constituted by the nuts (41) and (41).

In addition, a leaf spring (4) screwed onto the tension bar (39)
2) and the main chassis (36) is a curved round bar guide member (34) that guides between the core protrusions of the crawler belt (33). The guide member (34) is supported through the elongated hole of the front end plate spring (42), and the rear end is supported by the main chassis (36) in a state where it can freely rotate about the horizontal axis. ) can be oscillated and pressed downward.

Since the bolt member (40) is pivotally attached to the shaft (37), it is a nut (41) of the screw mechanism (B).

(41) can be operated to swing the tension roller (32) back and forth so as to tension the crawler belt (33).

[Another example]

The elastic body (23) of the adjustment mechanism (B) has a driving protrusion (2
2a) and the passive protrusion (19a), a compression spring to which an initial load is applied may be inserted.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the threshing device according to the present invention, FIG. 1 is a cross-sectional side view showing the adjustment mechanism, FIG. 2 is an exploded perspective view of the main part of the adjustment mechanism, and FIG. 3 is a side view of the crawler traveling device. Figure 4 is a plan view of Figure 3, Figure 5 is a perspective view of the tension pulley, Figures 6 and 7 are a side view and front view of the running latch lever, respectively, and Figure 8 is a side view of the bar hester. be. (7)... Handling cylinder, (8)... Handling room, (
9)...Receiving net, (10)...Rotating shaft,
(A)...Adjustment mechanism.

Claims (1)

[Claims] This is a threshing device in which a handling drum (7) is pivoted on the front and rear side plates of a handling chamber (8), and a receiving net (9) is arranged below the handling drum (7). When the threshing load acting on the threshing drum (7) exceeds the set value, the threshing load acting on the handling drum (7)
) is provided with an adjustment mechanism (A) for automatically moving the grain rearward with respect to its rotation axis (10).