JP2002017146A - Device for attaching feed chain of thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability in assembling a chain supporting stay. SOLUTION: A combine harvester 10 is equipped with a feed chain 28 capable of conveying reaped cereal stems along the side face of a threshing chamber 32, the feed chain 28 is supported with a chain supporting stay 29 installed to be extending toward back and forth of the machine body along the left side of the threshing chamber 32. A fulcral shaft hole 72 for supporting a rotatable fulcral shaft 73 installed to be protruding from the threshing frame 68 and the chain supporting stay 29 to be rotatable is formed in the chain supporting stay 29. In assembling the chain supporting stay 29, the one end (in the rear side) along the machine body in forward and backward directions of the chain supporting stay 29 is supported by the aforesaid rotatable fulcral shaft 73 and fixed by bolt 71 by lifting up the other end (in the front side) of the chain supporting stay 29 as in its state by hand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feed chain mounting device for a threshing machine in a combine or a harvester, and more particularly to a feed chain mounting device for a threshing machine in which the assemblability of a chain supporting member is improved.

[0002]

2. Description of the Related Art Combines and harvesters as mowing machines are provided with a feed chain capable of transporting mowing grain culms. At the time of mowing work, the culm guided between adjacent dividers is raised and the root is cut off while raising the culm by the device. After being sent to the depth conveying device and adjusted to an appropriate saw depth by the saw depth conveying device, it is taken over by the feed chain, conveyed by the feed chain, and degranulated by the saw cylinder.

[0003] The feed chain is supported by a feed chain support stay arranged on a threshing frame, and cooperates with a rail arranged above and facing the feed chain to sandwich a grain culm between the feed chain and the rail. It is configured to be transported. In addition, since the feed chain needs to transport the grain stalks along the side of the sawing room, the feed chain support stay is also extended along the longitudinal direction of the machine.

[0004]

However, since the feed chain support stay is extended long in the longitudinal direction of the fuselage along the side of the saw room, conventionally, for example, a plurality of feed chains projecting from the threshing frame side are conventionally provided. Although it has been tightened and fixed to the support bracket with bolts, when mounting it, the front and rear portions of the feed chain support stay must be supported at approximately the same height and simultaneously with both hands. It was difficult to perform the assembly work manually.

Moreover, the feed chain support stay is generally made of iron material, and its weight is considerable. It is extremely difficult to lift this by itself and fix it to a predetermined position with bolts. It was the work of.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a feed chain mounting apparatus for a threshing machine which can improve workability when assembling a chain support member. Is to do.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a feed chain (2) capable of transporting a cut culm along a side surface of a sawing room (32).
8) In the threshing machine (10) provided with 8), the saw room (3)
2) A rotation fulcrum (73) is provided on one side of the left and right sides and rotatably supports a chain support member (29) for supporting the feed chain (28).

The invention according to a second aspect is characterized in that the rotation fulcrum (7
3) is also used as a support shaft (75) of a sprocket (77) around which the feed chain (28) is wound.

The invention according to claim 3 is characterized in that the chain support member (29) is provided with stopper means (76) for restricting the rotation of the chain support member (29).

[Operation] A feed chain mounting device for a threshing machine according to the present invention comprises a chain support member (29) arranged on one side of the saw chamber (32) on the left and right sides and supporting the feed chain (28). When the chain support member (29) arranged on the side of the saw chamber (32) is assembled to the threshing unit (18) by being rotatably supported by the rotation fulcrum (73), first, the chain support member is used. (29) is lifted and one end of the chain support member (29) in the longitudinal direction of the machine is supported by the rotation fulcrum (73). In this state, the other end of the chain support member (29) is held with one hand. It may be lifted and fixed at a predetermined position with a bolt or the like, and even one person can easily assemble.

Note that the reference numerals in parentheses described above are for comparing the drawings, and do not limit the present invention in any way.

[0012]

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

FIG. 1 is a plan view of a combine to which the present invention is applied. The combine 10 has a traveling body 12 supported by a traveling device (not shown). A driver's seat 14 and a grain tank 16 for temporarily storing grains are arranged behind the driver's seat 14. A threshing unit 18 is provided on the other side of the traveling machine 12, and a pre-processing unit 20 is arranged in front of the traveling machine 12 so as to be able to move up and down.

The pre-processing unit 20 has a divider 22 for weeding grain culms, a narrow guide 24, a conveying device 26, a cutting blade (not shown), and the like. , Feed chain 28, threshing unit 1
It is conveyed into 8 and is threshed and sorted. In this way, threshing
The selected grains are transferred to the grain tank 16 and temporarily stored in the grain tank 16. Grain tank 16
Are stored outside the machine by a discharge auger (not shown), which is provided upright from the rear of the grain tank 16 and has a swivelable long cylinder. In addition, in the rear part of the machine body, a straw discharging device 30 for processing the grain culm after threshing is provided.

As shown in FIG. 2, the threshing unit 18 includes:
A saw chamber 32 is defined, and a saw cylinder 34 is accommodated in the saw chamber 32. The feed chain 28 is attached to a chain support stay 29 on the left side surface of the saw chamber 32 along the longitudinal direction of the machine. In a supported state, it is stretched along the side surface of the saw room 32. The drive sprocket (not shown) of the feed chain 28 is driven by power from a drive shaft that drives a Karino fan 46 (described later), and the chain is of an automatic tension type. Then, the cereal stalks mowed in the pre-processing unit 20 are supplied to the feed chain 2.
By 8, it is conveyed to the threshing unit 18 and supplied to the saw chamber 32, and threshed by the saw cylinder 34 in the saw chamber 32. On the other hand, a discharge straw 36 is continuously provided on the rear end side of the feed chain 28, and the processed waste straw is taken over by the discharge straw processing device 30 and processed.

Below the saw cylinder 34 accommodated in the saw chamber 32, a receiving net 38 is arranged. On the tip side behind the saw cylinder 34, there is a processing cylinder 40 and a processing net 4 below.
The processing chamber 44 in which the inside 2 is provided is connected. Below the saw chamber 32 and the processing chamber 44, a Karino fan 46 and a dust exhaust fan 48 are disposed before and after the machine body, and a sorting air path is formed by the Karino fan 46 and the dust exhaust fan 48.

In the above-mentioned sorting wind path, a swing sorting body 50 is provided.
Are swingably mounted in the longitudinal direction of the fuselage by a drive source (not shown), and below the swing sorting body 50, the grains leaked by the receiving net 38 and the processing net 42 are lifted. The first gutter 5 housed in the grain tank 16 via a tube 52
4 and a second gutter 58 for reducing unsorted kernels on the oscillating sorter 50 via a reducing cylinder 56 is provided. The swing sorter 50 is provided with a transfer plate 62 and a chaff sheave 64 between the left and right side walls, and a crimp net 66 is stretched below the chaff sheave 64.

Here, in the present embodiment, the saw chamber 3
2 and one side of the feed chain 2
A rotation fulcrum for rotatably supporting a chain support member for supporting the support member 8 is provided.

FIGS. 3 (a) and 3 (b) show the construction of the feed chain mounting device. The chain support stay (chain support member) 29 is provided in the saw chamber 3 defined in the threshing unit 18.
2 is arranged on the left side in the front-rear direction of the fuselage (see FIG. 1), and as shown in FIG. 3A and FIG. Is formed with a flange 29a also serving as reinforcement. The chain support stay 29 is formed with four bolt holes 29b for attachment. The chain support stay 29 is provided with two L brackets protruding laterally from the threshing frame 68 of the saw chamber 32. 70
And the bolt 71 are fastened through the bolt hole 29b.

A fulcrum shaft hole 72 is formed on one side (rear side in the figure) of the chain support stay 29 in the longitudinal direction of the machine body, and can be inserted into the fulcrum shaft hole 72 from the threshing frame 68. A turning fulcrum shaft 73 is protruded. The chain support stay 29 has one end supported by the rotation fulcrum shaft 73 and the other end rotatably supported in the direction of the arrow in the figure.

According to this embodiment, when assembling the chain support stay 29 to the side of the saw chamber 32, the chain support stay 29 is first lifted up with both hands to rotate the pivot shaft 73.
In the state where one end of the chain support stay 29 is rotatably supported on the rotation support shaft 73, the other end of the chain support stay 29 is lifted up to a predetermined height with one hand. Then, the other hand may be used to position the bolt hole 29b formed in the chain support stay 29 and the L bracket 70 and fasten the bolt 71.

In the present embodiment, the rotation fulcrum shaft 73 is also used as a support shaft of a sprocket around which the feed chain 28 is wound.

As shown in FIGS. 4 (a) and 4 (b), a collar 74 as a bearing is mounted on a fulcrum shaft hole 72 formed in the chain support stay 29, and the rotation fulcrum shaft 7 described above.
This collar 7 is attached to the chain drive shaft 75 as an alternative to
4 is rotatably inserted. And this chain drive shaft 7
By fixing a driving sprocket (not shown) to the chain 5 and driving the chain driving shaft 75, the feed chain 28 can be driven.

As described above, the collar 74 is integrally attached to the chain support stay 29. Since the collar 74 is rotatably inserted into the chain drive shaft 75, the chain support stay 29 is assembled. Sometimes, as described above, the chain support stay 29 is lifted and the chain drive shaft 7 is lifted.
If the collar 74 is inserted into the collar 5, one end of the chain support stay 29 is rotatably supported by the collar 74, so that the assembly is facilitated. Further, in this embodiment, the number of components can be reduced by using both the rotation fulcrum shaft 73 and the chain drive shaft 75.

Further, in this embodiment, the chain support stay 29 is provided with stopper means for restricting the rotation of the chain support stay 29.

As shown in FIGS. 5 (a) and 5 (b), on the back side (the saw room side) of the chain support stay 29, and at a position corresponding to one L bracket 70 (the rear part in the figure) in the longitudinal direction of the machine. The block-shaped stopper member 76 is integrally fixed to the chain support stay 29. This stopper member 7
The alignment surface 76a of No. 6 is formed so as to be directed substantially vertically in a contact position with the L bracket 70.

As described above, when assembling the chain support stay 29, if the chain support stay 29 is lifted and the collar 74 is inserted into the chain drive shaft 75, one end of the chain support stay 29 can be rotated by the collar 74. In this state, the chain support stay 29 is lifted in the direction of the arrow, and when the alignment surface 76a of the stopper member 76 contacts the L bracket 70, the positioning of the chain support stay 29 is completed at that position. Assembly work is simplified.

FIGS. 6A and 6B show a specific example of the present embodiment described above.

That is, the collar 74 is integrally attached to the lower part of the chain support stay 29, and the collar 74 is rotatably supported on the chain drive shaft 75. A drive sprocket 77 is inserted into the outer periphery of the chain drive shaft 75, and the drive sprocket 77 is further integrally fixed to the chain drive shaft 75 with bolts 78. On the other hand, an idler (driven sprocket) 7 is provided on the outer peripheral portion of the chain support stay 29.
When the drive sprocket 77 is rotated together with the chain drive shaft 75,
The feed chain 28 is driven.

Although partially overlapping the above description, in order to assemble the chain support stay 29 with the threshing frame 68, for example, one end (right side in the figure) of the chain support stay 29 is lifted, and the collar of the chain support stay 29 is raised. 74 is inserted and supported on the chain drive shaft 75. In this state, the chain support stay 2
9, the other end (left side of the figure) of the stopper member 76 is
Lift with one hand to the position where it touches 0. Next, while holding the chain support stay 29 with one hand, the bolt 71 is tightened and fixed with the other hand. With such a chain attachment device, the operator can move the chain support stay 29 to one position.
It can be easily assembled by humans.

FIGS. 7A and 7B show a chain support stay 2.
9 shows another embodiment of the present invention.

In this embodiment, the chain support stay 2
9, two recesses 81, 81 are formed at two places in the longitudinal direction of the fuselage.
Positioning is performed by matching the mounting surfaces of the two L fittings 70, 70.

That is, at the time of assembling, the chain support stay 29 is lifted, and the L bracket 70,
The mounting surfaces of 70 are matched. At this time, since the chain support stay 29 is prevented from moving downward by the action of the concave portion 81 and the L bracket 70, the chain support stay 29 is fixed by the bolt 71 while the chain support stay 29 is pressed by hand as shown in the figure. Just do it.

In the above description, the feed chain mounting device of the present invention has been described by taking the threshing machine of the combine 10 as an example. However, the present invention is not limited to this, and for example, the feed chain mounting device mounted on a threshing machine such as a harvester. Of course.

[0035]

As described above, according to the first aspect of the present invention, a rotation fulcrum that is disposed on one side of the left and right sides of the saw chamber and rotatably supports a chain support member that supports the feed chain. When the chain support member is assembled, only the rotation tip side of the chain support member that rotates about the rotation fulcrum needs to be supported, and workability can be improved.

According to the second aspect of the present invention, the rotation fulcrum is also used as a support shaft of a sprocket around which the feed chain is wound, thereby improving workability when assembling the chain support member. The number of parts can be reduced.

According to the third aspect of the present invention, since the chain supporting member is provided with the stopper means for restricting the rotation of the chain supporting member, the stopper means is provided so as to protrude from the saw chamber side. Since the rotation of the chain support member is prevented only by contacting the member, the chain support member can be easily assembled.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a combine to which the present invention is applied.

FIG. 2 is a sectional side view of the same.

FIG. 3A is a cross-sectional plan view of an embodiment of a feed chain attaching device, and FIG. 3B is a front view thereof.

FIG. 4A is a cross-sectional plan view of another embodiment of the feed chain attaching device, and FIG. 4B is a front view thereof.

FIG. 5A is a cross-sectional plan view of another embodiment of the feed chain attaching device, and FIG. 5B is a front view thereof.

FIG. 6 (a) is a cross-sectional plan view of an embodiment of a feed chain attaching device, and FIG. 6 (b) is a front view thereof.

7A is a cross-sectional plan view of another embodiment of the feed chain attaching device, and FIG. 7B is a front view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Combine 28 Feed chain 29 Chain support stay 32 Saw room 68 Threshing frame 70 L bracket 71 Bolt 72 Support shaft hole 73 Rotating support shaft 74 Collar 75 Chain drive shaft 76 Stopper member 77 Drive sprocket

Claims (3)

[Claims] 1. A threshing machine provided with a feed chain capable of transporting a cut culm along a side surface of a saw room, wherein a chain support is disposed on one of the left and right sides of the saw room and supports the feed chain. A feed chain mounting device for a threshing machine, comprising: a rotation fulcrum for rotatably supporting a member. 2. The feed chain mounting device for a threshing machine according to claim 1, wherein the rotation fulcrum is also used as a support shaft of a sprocket around which the feed chain is wound. 3. The feed chain mounting device for a threshing machine according to claim 1, wherein a stopper means for restricting the rotation of the chain support member is provided on the chain support member.