JPH0811016B2 - Waste straw shredder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a rotary cutting blade formed by arranging a plurality of disc-shaped cutting blades at predetermined intervals along the axial direction of the cutting blade shaft, and a receiving blade shaft. Regarding a waste straw shredding device which is supported by left and right side plates in parallel with a rotary receiving blade formed by arranging a plurality of disc-shaped receiving blades at a predetermined interval along the axial direction, in detail, The present invention relates to a structure for changing the relative distance from the blade axis.

[Conventional technology]

Conventionally, as a structure for changing the relative distance between the cutting blade shaft and the receiving shaft, for example, there is one shown in Japanese Utility Model Publication No. Sho 52-80863, and in this reference, the shredded straw is shredded. By supporting one of the cutting blade shaft and the receiving blade shaft on the swinging end of an arm-shaped member pivotally supported on both side walls of the device, the distance between the shafts can be changed.

In this structure, if the distance between the axes is reduced,
In the axial direction, the disc-shaped cutting edge and the disc-shaped receiving edge overlap each other to shred the discharge straw, and when the axial distance is increased, the disc-shaped cutting edge and the disc-shaped cutting edge are seen in the axial direction. A passage for the discharged straw is formed between the blade and the receiving blade, and the discharged straw is discharged in a non-shredded state, and this switching operation is performed by operating a lever linked to the arm-shaped member via a link mechanism. Has become.

[Problems to be Solved by the Invention]

Further, in the recent waste straw shredding device, for example, among the disk-shaped receiving blades arranged at a predetermined interval with respect to the receiving blade shaft, a suitable number of receiving blades having different diameters are arranged along the axial direction. Therefore, when changing the relative distance to the cutting blade axis, a long cutting state in which some disk-shaped receiving blades and disk-shaped cutting blades overlap in the axial direction, and all disk-shaped receiving blades and all cutting blades. A structure has been developed in which the cutting dimension can be changed to a shredded state in which the disc-shaped cutting edge overlaps with each other.This is a structure in which the cutting dimension can be changed.Unlike the above-mentioned reference, the axial distance has been reduced. If
Also, in each case when it is increased, the force at the time of cutting action acts on the cutting blade axis and the receiving blade axis, so when the inter-axis distance is changed, the position of the axis is strengthened in each posture. Need to support.

By the way, in the above-mentioned reference, since the swinging posture of the arm-shaped member is maintained by restricting the operation of the link mechanism or the operation lever linked to the arm-shaped member, if the linkage is loosened due to long-term use. Not only cannot accurately hold the position, but it is necessary to perform a special locking operation to hold the position of the arm-shaped member.
There is room for improvement because it is easy to perform two-action operation.

The object of the present invention is not only to switch between shredding and non-shredding of the exhaust straw, but also to switch the cutting length of the exhaust straw, so when the relative distance between the cutting blade axis and the receiving blade axis is changed. The point is to obtain a structure in which the shaft that has been moved and operated is firmly held at a predetermined position and that this switching operation can be performed as easily as possible.

[Means for solving the problem]

The feature of the present invention is in the waste straw shredding device having the above-mentioned configuration,
The left and right side plates are provided with a pair of rocking support members pivotally supported around a shaft axis in the left-right direction, and the rocking support members serve for at least one of the cutting blade shaft and the receiving blade shaft. Both end portions are supported, and the distance between the center axes of the cutting blade shaft and the receiving blade shaft can be changed according to the swing of the swing supporting member.
Further, the swing support member has a first overhanging member having a projecting portion projecting in one swinging direction, and a first projecting member having a projecting portion projecting in the other swinging direction. 2 and the overhanging member, each of which is swingably supported in the direction along the side plate,
A pair of lock pins for connecting and fixing the rocking support member at both ends in the rocking direction are provided on the side plates at portions located on both sides of the rocking support member in the rocking direction. In each of the overhanging portions of the first and second overhanging members, there is provided a lock engaging portion capable of swingingly engaging with a lock pin on a corresponding side at one swing end side of the swing supporting member, A guide engagement portion capable of relatively guiding the lock pin is formed in the lock engagement portion, and a biasing force for swinging and biasing the first and second overhang members toward a predetermined lock posture is provided. One of the first and second locked states is provided in the initial stage of the operation between the rocking support member and the operating tool for rocking the rocking support member.
There is a flexible operation mechanism for rocking the overhanging member in the unlocking direction against the biasing force of the biasing means, and the action and effect are as follows.

[Action]

If the above features are configured as shown in FIGS. 1 to 4, for example, when the swing support member (11) supporting the blade shaft (8) reaches one swing end, Overhang member (26
L) is locked (Fig. 2), so swing support member (11)
It is prevented from swinging around the swing axis (P), and when performing a switching operation, the interchangeable operation mechanism (F) is simply moved by moving the operating tool (24) in the switching direction. After the locked state is released by (FIG. 1), the rocking support member (11) is rocked.

〔The invention's effect〕

Therefore, since the rocking support member for rocking operation is directly locked, even if a large force is applied when the drainage straw is cut, the shaft that has been moved and operated is firmly held at a predetermined position and the switching operation is performed. A structure that allows easy operation is obtained.

Particularly in the present invention, as shown in FIG.
When 1) reaches the swinging end, the second overhanging member (26R) (or the first overhanging member (26L)) is automatically fitted to the lock pin (27) to be in the locked state. It is also possible to configure to switch, and by configuring in this way,
There is also an effect that the switching operation can be performed by a so-called complete one-action operation.

〔Example〕

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

As shown in FIG. 3, the threshing device (3) is mounted on a machine body (2) having a pair of left and right crawler traveling devices (1), and a cutting pretreatment section (4) is provided at the front end of the machine body (2). The combine is configured.

In the combine, a transfer route is formed so that the cut culm from the pre-cutting processing section (4) is supplied to the feed chain (5) of the threshing device (3), and the cut corn supplied to the feed chain (5) is supplied. After the grain culm is treated by the threshing device (3), it is sent to the waste straw shredding device (A) provided at the rear end of the threshing device (3).

In addition, this waste straw shredding device (A)
It is configured so that it can be switched between long and short.

That is, as shown in FIG. 5 and FIG. 6, the discharge straw shredding device (A) has a predetermined interval (D) along the axial direction with respect to the cutting shaft (6) having a hexagonal cross section. With respect to the rotary cutting blade (B) formed by arranging a large number of disc-shaped cutting blades (7) and the receiving blade shaft (8) having a hexagonal cross-section, the predetermined interval (D) of 3 is provided along the axial direction. A large number of large-diameter disk-shaped blades (9a) are arranged at a double interval (E), and the predetermined distance (D) is provided between these large-diameter disk-shaped blades (9a). It is configured by providing parallel to a rotary blade (C) formed by arranging two disc-shaped blades (9b) each having a small diameter at equal intervals (D). As shown in FIGS. 1 to 4, the rocking rocks on the left and right side walls (10), (10) around a rocking axis (P) parallel to the blade axis (8). Support members (11), (11) are attached Together is, the swing support member (11), (11) both ends bearings (12) of the receiving blades shaft (8) to, by being supported via (12),
As shown in FIG. 6, by the swinging displacement of the blade shaft (8),
Large diameter disk-shaped blade (9a) for disk-shaped cutting blade (7)
..Long-cutting state that only operates, and disc-shaped cutting blades (7) ..- all disc-shaped receiving blades (9a) ...- (9
b) ··· It is designed to be switched to a short cutting state that acts.

The cutting blade shaft (6) and the receiving blade shaft (8) have cylindrical members (13), (14), and
・ Is externally fitted, and as shown in FIG. 5, a threshing device (3)
Power from the output pulley (15) provided for the endless belt (1
The power transmitted to the input pulley (17) of the cutting blade shaft (6) via the cutting blade shaft (6) is transmitted to the output sprocket (18) of the cutting blade shaft (6) and the oscillating shaft (6). Moving axis (P)
The input sprocket (2
0), transmitted to the input gear (23) of the blade shaft (8) through the endless chain (21) wound around them and the output gear (22) that rotates integrally with the input sprocket (20). Then, the drive system is configured so that the cutting blade shaft (6) is in a high speed state with respect to the receiving blade shaft (8) and each is driven as indicated by an arrow in FIG.

Further, as shown in FIGS. 2 and 3, the swing support member (11) locks the swing in a long shredding position and a short shredding position, and When changing the length, only the rocking operation of the rod-shaped operation tool (24) can be performed from unlocking to changing the posture of the rocking support member (11) and changing to the locked state. There is.

That is, each of the swing support members (11), (11) has a shaft parallel to the swing shaft core (P) on the side facing the support shaft (19) across the receiving shaft (8). In a state where the first and second overhanging members (26L) and (26R) having the locking engaging portions (26a) and (26a), which respectively overhang via the (25) in both swing directions, are superposed. It is pivotally supported, and also on both side walls (10), (10) of the waste straw shredding device (A), a locking engaging portion (26a),
Lock pins (27) and (27) are provided so as to engage with (26a).

Furthermore, between the first and second overhang members (26L), (26R),
A coil spring (28) (an example of a biasing means) is interposed so that the engaging portions (26a) and (26a) extend toward the locking direction, and the first and second overhang members (26L). ) And (26R), the lock pins (27) and (27) are provided with locking engagement portions (26
a), guide edges (26b) and (26b) (one example of guide engaging portions) to be introduced into (26a), and a boss portion (11) of the swing support member (11).
A contact arm (26c), (26c) operated by a protrusion (29a) of an operation ring (29) loosely fitted in a) is formed, and the operation ring (29) and the operation tool (24) are formed. And are linked through a swing shaft (30), a swing link (31), and a push-pull link (32).

When the switching operation from the long shredded state to the short shredded state is performed, as shown in FIG. 1, by operating the operation tool (24) in the lifting direction, the operation ring (29) is moved.
Rotates about the axis of the blade shaft (8), and this turning force locks the first overhang member (26L) via the protrusion (29a) and the contact arm (26c). After swinging to the release position, the stopper (33) protruding from the swing supporting member (11) is brought into contact with the first overhanging member (26L), whereby the swing supporting member (1
When the swing displacement of 1) is started and the operation of the operating tool (24) is continued, the guide edge (26b) of the second overhang member (26R) on the swing lower side and the lock pin (27) are separated. By the sliding contact, the second overhang member (26R) swings once in the non-engaging direction, and then the lock pin (27) is introduced into the lock engaging portion (26a) to set the lock state. Has become.

Thus, in the initial operation of the operation tool (24), the operation ring (29) for operating the operation force only in the unlocking direction, the contact arm portion (26c), and the stopper (3
3), the coil springs (28) are collectively referred to as an interchange operation mechanism (F).

The swing shaft (30) is provided between both side walls (10) and (10) of the waste straw shredding device (A), and the operation tools (24) and (24) on either the left or right side. The rocking support members (11), (11) on both sides can be unlocked by operating.

By the way, on the upper surface of the waste straw shredding device (A), a swingable lid (34) is provided for selecting the supply or non-supply of the waste straw for this device. A rotary type diffusing device (36) is arranged below to transmit power from the cutting blade shaft (6) through a chain transmission mechanism (35).

[Another embodiment]

The present invention may be applied to, for example, a portion for switching between shredding and non-shredding of a discharge straw, in addition to the above-described embodiment, and the interchange operation mechanism can be variously combined with a long hole, a cam body, and the like. Can be configured.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a shredding length switching structure in a state in which the device is operated to an unlocked position, FIG. FIG. 4 is a side view of the shredding length switching structure when locked in the long cutting position, and FIG. 3 is a side view of the shredding length switching structure when locked in the short cutting position. Fig. 5 is a rear view in vertical section of a shredding length switching structure, Fig. 5 is a side view showing a drive system for the waste straw shredding device, and Fig. 6 is a plan view showing the structure of the waste straw shredding device. FIG. 7 is an overall side view of the combine. (6) …… Cutting blade axis, (7) …… Disc-shaped cutting blade, (8) ……
Receiving blade shaft, (9) ... disk-shaped receiving blade, (10) ... side plate, (1
1) …… Swing support member, (24) …… Operating tool, (25) ……
Shaft, (26L) ... First overhang member, (26R) ... Second overhang member, (26a) ... Lock engaging part, (26b) ... Guide engaging part, (27) ... … Lock pin, (28) …… Biasing means,
(B) …… Rotating cutting blade, (C) …… Rotating blade, (F) ……
Flexible operating mechanism.

Claims (1)

[Claims] 1. A rotary cutting blade (B) comprising a plurality of disc-shaped cutting blades (7) arranged at predetermined intervals along the axial direction of the cutting blade shaft (6).
And a disk-shaped blade (9) along the axial direction of the blade axis (8).
A plurality of rotary receiving blades (C) arranged in parallel at a predetermined interval are supported by left and right side plates (10) in parallel with each other, and the left and right side plates (10) are provided with left and right side plates. Is provided with a pair of swing support members (11) swingably supported around the shaft center (P), and the cutting blade shaft (6) and the receiving blade shaft (8) are provided by the swing support members (11). Of both of the cutting blade shafts (6) and the receiving blade shafts (8) are supported by swinging the swing support member (11) by supporting both ends of at least one of the shafts. In addition, the swing support member (11),
A first overhanging member (26L) having an overhanging portion projecting in one swing direction, and a second overhanging member (26R) having an overhanging portion projecting in the other swing direction. And are respectively swingably supported in the direction along the side plate (10), and the side plates (10) at positions located on both sides of the swing support member (11) in the swing direction are respectively supported. , A pair of lock pins (27) for connecting and fixing the swing support member (11) at both ends in the swing direction.
Is provided, and the first and second overhang members (26L) and (26R) are provided.
And a lock engaging portion (26a) capable of swingingly engaging with a lock pin (27) on the corresponding side at one swing end side of the swing supporting member (11). , This lock engaging part (2
6a) is formed with a guide engaging portion (26b) capable of relatively guiding the lock pin (27), and the first and second
An urging means (28) for urging the overhanging members (26L) and (26R) to swing toward a predetermined lock posture is provided, and the swing supporting member (1
1) and the operating tool (24) for rocking the rocking support member (11), one of the first or second overhanging members (26L), (26R) in a locked state in the initial operation. A waste straw shredding device having a flexible operation mechanism (F) for swinging the spring in the unlocking direction against the urging force of the urging means (28).