JPH0520128Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a drive structure for a pulling device in a three-row harvester.

(b) Prior art Conventionally, in the grain culm conveying device of a three-row combine harvester, a pair of upper and lower conveying devices are arranged in a “V” shape on the left and right, and At the rear end, the grain culms sent from the left and right conveying devices are merged and transferred from the horizontal drive case placed under the lower conveying device to the upper pulling device.
The technique for protruding the drive shaft case of a book is known. For example, Japanese Patent Application Laid-open No. 58-138317 and Japanese Patent Application Laid-Open No. 60-160815.

(c) Problems that the invention aims to solve In the configuration in which the grain culms sent from the left and right conveyors are merged at the rear end of the mold conveyor, the "V"-shaped confluence part is located at the center of the left and right sides of the machine. This portion is located below the central pulling device, and coincides with the position where the drive shaft case that drives the central lifting device passes through this portion.

In order to secure the position of the drive shaft case, in the conventional technology, the "V" shaped merging section was retracted to the rear.

The present invention solves this problem by protruding the center pulling device further forward than the other left and right drive shaft cases. It also serves as a support for the clamping rod.

(d) Means for solving the problem The purpose of the present invention is as described above, and next, the configuration for achieving the purpose will be explained.

Above the pair of left and right lower conveyance devices 2L, 2R arranged in a "C" shape, a pair of left and right upper conveyance devices 1L, 1R are arranged almost overlappingly, and in front are a three-strip pulling device 8L, 8N, 8R are placed between the horizontal drive case 6 installed horizontally below the lower conveyance devices 2L, 2R and the raising devices 8L, 8N, 8R.
In the configuration in which the drive shaft cases 45R, 44, and 45L are connected, the drive shaft case 44 that drives the central pulling device 8N is connected to the drive shaft cases 45L, 45R of the left and right pulling devices 8L, 8R. At the front, a clamping rod attachment body protrudes upward from between the lower conveying devices 2L and 2R arranged in the shape of the letter "V" and is attached to the outer periphery of the drive shaft case 44 at a position facing the lower conveying devices 2L and 2R. 15 is fixedly installed, and the clamping rods 12, 13 of the lower conveying devices 2L, 2R protruding from the clamping rod mounting body 15 by the drive shaft case 44.
was supported.

(e) Embodiments and operations The purpose and structure of the present invention are as described above. Next, the structure and operations of the embodiments shown in the attached drawings will be explained.

Fig. 1 is an overall plan view of the grain culm conveying device of the present invention;
FIG. 2 is an overall side view, FIG. 3 is a plan sectional view of the horizontal drive case 6, and FIG. 4 is a cross-sectional view of the horizontal drive case 6.
FIG. 3 is a side view of a portion of the protruding drive case 34. FIG.

The overall configuration will be explained with reference to FIGS. 1 and 2.

A weeding rod protrudes from the front end of the reaping device, and a weeding plate attached to the weeding rod weeds the lodging grain culms. The grain culms after weeding are pulled up by three pulling devices 8L, 8N, and 8R, and the stock part is guided to the conveyance path by scraping conveyance devices 10L, 10N, and 10R, which are composed of belts with tines. , cut the base of the stock using a cutting blade device.

Star wheel 7R, 7N,
7L leads to two conveyance paths. The star wheel 7R forms one conveyance path with the pincer, and the star wheels 7N and 7L form one conveyance path.

A lower conveying device 2R is arranged rearward following the star wheel 7R, and an upper conveying device 1R is arranged in an overlapping state above the lower conveying device 2R.

A lower conveying device 2L is disposed following the star wheels 7N, 7L, and an upper conveying device 1L is disposed above the lower conveying device 2L.

The upper transport devices 1L, 1R and the lower transport device 2
L and 2R are configured in a "V" shape when viewed from above, and a merging portion of the left and right grain culm conveyance passages is configured at the rear end.

A head vertical conveyance device 4 and a stock head vertical conveyance device 5 are arranged with the merging section as a starting end. By rotating the tip up and down around the pivot point, it is possible to adjust the length of the culm.

If a certain amount of space is provided between the front transport devices 1 and 2 and the rear rotatable transport devices 4 and 5 to prevent interference during rotation,
This area becomes a blind space where there is no conveyance device.

In this configuration, in order to fill the gap that occurs between the upper conveyance device 1R and the tip vertical conveyance device 4, a transfer conveyance device 3 is provided between the two.

Stock vertical conveyance device 5 from lower conveyance devices 2L and 2R
The gap that occurs during the process is eliminated by extending the lower conveyance device 2L to the rear and extending it to a position along the side of the stock vertical conveyance device 5, thereby eliminating the blind space. It is.

Next, the drive configuration of the grain culm conveying device of the present invention will be explained.

Power from the engine is input to the reaping conveyance input case 9 via the V-belt. The input shaft portion of the reaping conveyance input case 9 is configured as a pivot point for vertical movement of the reaping conveyance device.

Further, the drive cases of the head vertical conveyance device 4 and the stock head vertical conveyance device 5 protrude from the reaping conveyance input case 9, and the head tip vertical conveyance device 4 and the stock head vertical conveyance device 5 are moved diagonally around the drive case portion. while leaning towards
To adjust the length of the culm, the starting end is rotated up and down by a motor or the like.

Further, a power transmission pipe 11 protrudes forward from the reaping transport input case 9, and the power transmitting pipe 11 transmits power to the horizontal drive case 6 through a power transmission shaft 27 disposed inside, and also transmits power to the horizontal drive case 6. It also serves to support the entire device so that it can move up and down.

A horizontal drive case 6 is installed at the tip of the power transmission pipe 11.
The central parts of the two are joined together to form a "T" shape.

Five shafts are projected upward from the horizontal drive case 6, and three of them are used to drive the pulling device 8.
L, 8N, and 8R are driven, and the latter two drive lower conveyance devices 2L and 2R.

The power that drove the lower transport device 2L is extended and also drives the upper transport device 1L, and the power that drives the lower transport device 2R is extended.
The power that drove the transfer conveyance device 3 is then transmitted to drive the upper conveyance device 1R.

The star wheels 7R, 7L and the scraping conveyance devices 10L, 10R are forcibly driven by the conveyance chains of the lower conveyance devices 2L, 2R, and are driven by meshing with the center star wheel 7N and the left star wheel 7L. The scraping conveyance device 10N is driven by the star wheel 7N.

Lower conveyor device 2 configured in a “C” shape on the left and right sides
A clamping rod mounting body 15 is installed upright between L and 2R, and the clamping rod 1 is elastically biased from the clamping rod mounting body 15.
2.13 is supported.

The pinching rod 12 is urged toward the conveyance chain of the lower conveyance device 2R, and the pinching rod 13 is urged toward the conveyance chain of the lower conveyance device 2L.

Further, a confluence section guide rod 14 extends from the clamping rod attachment body 15 toward the "V"-shaped confluence section.

The central pulling device 8 that constitutes the main part of the present invention
The drive shaft case 44 of N is also used as a support rod for the clamping rod mounting body 15, and the clamping rod mounting body 15 is fixedly installed in the middle of the drive shaft case 44, and the drive shaft case 44 is It extends upward through the clamping rod attachment body 15 and reaches the raising device 8N.

Next, a description will be given based on the drawings of FIGS. 3 and 4.

A horizontal drive case 6 is installed at the tip of the power transmission pipe 11.
The central parts of the two are joined together to form a "T" shape.

A bevel gear 43 is fixed to a portion where the tip of the power transmission shaft 27 protrudes into the horizontal drive case 6, and the bevel gear 43 meshes with a bevel gear 41 on the horizontal reaping drive shaft 33. The reaping drive horizontal shaft 3
3 is equipped with a cutting blade crank at its tip.

The reaping drive horizontal shaft 33 is connected to the horizontal shaft 38 by a coupling 39 disposed immediately beside the bevel gear 41.

With two sets of bevel gears on the horizontal shaft 38,
Power is transmitted to a drive shaft 16 that drives the lower conveyance device 2 and the upper conveyance device 1 on the left side, and a drive shaft 37 of the raising device 8L on the left side. A left drive shaft case 45 is arranged around the drive shaft 37, protrudes upward, and drives the pulling device 8L.

Furthermore, three sets of bevel gear devices are arranged above the horizontal reaping drive shaft 33, and power is transmitted through the drive shaft 35 to the protruding drive case 34 protruding from the horizontal drive case 6, and the drive shaft 35 transmits power from the protruding case 34 to the central A drive shaft case 44 that drives the pulling device 8N protrudes upward. The drive shaft case 44 passes through and supports the clamping rod attachment body 15, leading to the raising device 8N.

It also drives the lower transport device 2R, the transfer transport device 3, and the upper transport device 1R on the right side of the drive shaft 17,
A right drive shaft case 45 is protruded upward from the outer periphery of the drive shaft 36 to drive the right raising device 8R.

A cutting blade crank is fixedly attached to a horizontal reaping drive shaft 33 protruding from the horizontal driving case 6, and the cutting blade 31 is made to slide on the receiving blade 32.

Fig. 5 is an exploded plan view of the upper conveyance device 1L;
The figure is also a side sectional view, and Figure 7 is the upper conveyor device 1.
R is an exploded plan view, FIG. 8 is a side sectional view, and FIG. 9 is a front sectional view of the case portion.

The drawings from FIG. 5 to FIG. 9 disclose a structure in which the cases constituting the upper conveyance devices 1L and 1R can be used as parts.

That is, by using the same parts for the left and right upper conveyance devices 1L and 1R and changing only the assembly and arrangement structure, it is possible to reduce the cost.

In other words, the upper and lower cases 46 constituting the upper transport devices 1L and 1R are constructed from the same parts as a dual-purpose part.

The left and right cases, which are made up of the upper and lower cases, are also constructed as common parts.

However, when the left and right cases are made of the same part, the tine upright protrusion 46 provided on the case 46
The portion a needs to be placed in the opposite left and right positions, and the upper and lower drive sprockets 48 and the tine upright sprocket 47 need to be interchanged in their front and rear positions. In this case, since the tine upright sprocket 47 is thick, the tine upright protrusion 46a is formed by extruding it into the case 46 using a press.
It is not possible to extend it all the way to the sprocket.

Therefore, the tine upright protrusion 46a is terminated before reaching the sprocket, and the subsequent extension of the upright protrusion is constructed by attaching an extended upright protrusion 50 to the inner surface of the case 46.

As described above, the tine upright protrusion 46a, which is the part that the upright protrusion 49a of the tine 49 provided inside the case 46 comes into contact with, is integrally extruded into the case 46, and the tine upright protrusion 46a, which is attached to the tine upright protrusion 46a, is attached. By configuring the extension protrusion 50 to extend the protrusion, the left and right upper conveyance devices 1L, 1R and the upper and lower cases of the upper conveyance device 1 can be used as a dual-purpose component, contributing to overall cost reduction. I was able to do it.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, the drive shaft case 44 located at the front,
By fixing the clamping rod attachment body 15 at the position corresponding to the lower conveyance devices 2L and 2R, and by protruding the clamping rods 12 and 13 from the clamping rod attachment body 15, the horizontal There is no need to protrude a support for supporting the clamping rods 12 and 13 from the installation drive case, and the drive shaft case 44 has a sturdy construction.
This also serves as a support for the clamping rods 12 and 13.

Second, since the drive shaft case 44 has a sturdy structure with a shaft disposed inside, even if a large force is applied to the pincer rods 12 and 13, the pincer mounting body 15
This means that the part will not bend.

[Brief explanation of drawings]

Fig. 1 is an overall plan view of the grain culm conveying device of the present invention;
FIG. 2 is an overall side view, FIG. 3 is a cross-sectional plan view of the horizontal drive case 6, and FIG. 4 is a cross-sectional view of the horizontal drive case 6.
5 is an exploded plan view of the upper conveyance device 1L, FIG. 6 is a side sectional view of the same, FIG. 7 is an exploded plan view of the upper conveyance device 1R, and FIG. 8 is a side view of the protruding drive case 34. Similarly, FIG. 9 is a side sectional view, and FIG. 9 is a front sectional view of the case portion. 1L, 1R... Upper transfer device, 2L, 2R...
Lower conveyance device, 6...Horizontal drive case, 8L, 8
N, 8R...Lifting device, 15...Pinch rod mounting body, 34...Protruding drive case, 44...Central pulling device drive shaft case, 45L, 45R...Left and right pulling devices Drive shaft case.

Claims (1)

[Scope of utility model registration request] Above the pair of left and right lower conveyance devices 2L, 2R arranged in a "C" shape, a pair of left and right upper conveyance devices 1L, 1R are arranged almost overlappingly, and in front are a three-strip pulling device 8L, 8N, 8R are placed between the horizontal drive case 6 installed horizontally below the lower conveyance devices 2L, 2R and the raising devices 8L, 8N, 8R.
In the configuration in which the drive shaft cases 45R, 44, and 45L are connected, the drive shaft case 44 that drives the central pulling device 8N is connected to the drive shaft cases 45L, 45R of the left and right pulling devices 8L, 8R. At the front, a clamping rod attachment body protrudes upward from between the lower conveying devices 2L and 2R arranged in the shape of the letter "V" and is attached to the outer periphery of the drive shaft case 44 at a position facing the lower conveying devices 2L and 2R. 15 is fixedly installed, and the clamping rods 12, 13 of the lower conveying devices 2L, 2R protruding from the clamping rod mounting body 15 by the drive shaft case 44.
A combine raising drive structure characterized by supporting.