JPH0543629Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a stem culm binding device that is mounted on a combine harvester and used. The present invention relates to a stem culm tying device, which is provided with a needle for supplying a tying string at a position near the drive locus of a pacifier, and a clutch is provided in a drive system to a drive shaft of the pacifier.

[Conventional technology]

Regarding such a stem culm binding device, for example,
As disclosed in Japanese Patent Application No. 61-180902, a picker for picking up waste straw is placed near the movement trajectory of the needle so that the waste straw does not get caught at the tip of the needle when the needle is operated. The structure is such that the needle moves to the location where the waste straw has been pushed apart by this packer. Generally, a belt tension type binding clutch is provided on the binding input shaft that transmits power to the packer drive shaft.

[Problem that the invention attempts to solve]

However, when the engine is stopped and the stem culm tying device is stopped, the stop position of the culm tying device is not constant, and the tucking car may stop at a position near the stop of the needle, and in this case, the string at the tip of the needle The through hole is hidden by the packer, making it impossible to pass the string through the string through hole.

In such cases, in the past, the binding clutch was intentionally disengaged to allow the puller drive shaft to freely rotate, and then the puller was rotated backwards from the trajectory of the needle. The disadvantage is that the operation is cumbersome when changing the .

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to provide a device that allows the trouser to be easily moved and threaded through the needle without any hindrance without breaking the tying clutch. shall be.

[Means for solving problems]

That is, the characteristic configuration of the stem culm binding device according to the present invention is that the clutch is configured as a meshing clutch, and the meshing flexibility of this clutch is achieved by forward rotation of the packer drive shaft so as to move the packer forward and away from the locus of movement of the needle. The dimensions are set so that it can be moved, and its functions and effects are as follows.

[Effect]

If the trouser stops near the needle when threading the string through the needle, the tying clutch connected to the trouser drive shaft has the degree of engagement flexibility described above, so you can manually move the trouser around the needle. It can be moved forward and away from the movement trajectory. In other words, power transmission to the Packer drive shaft is performed with the pair of meshing clutch members abutted and engaged on the upper side of the rotation, so when the power is stopped, the clutch member connected to the Packer drive shaft is transferred to the lower side of the rotation. This gives you enough room to rotate.

[Effect of idea]

As a result, it is now possible to move the trouser manually without having to go all the way to the binding clutch operation point and disconnect the binding clutch as in the past, making it easier to thread the string through the needle.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 3 shows the waste straw processing device mounted on the rear of the combine, and this processing device consists of the threshing device 5.
A shredding device 4 is provided with a conveyance chain 6 for conveying the waste straw in a horizontal position at the rear of the conveyor chain 6, and a disk-shaped waste straw cutter is provided at the lower rear of the conveyance chain 6.
and a waste straw binding device 7 are arranged in parallel in the longitudinal direction of the machine, and a cover 9 is pivotally connected to the waste straw supply port 8 of the shredding device 4 so as to be freely openable and closable. The waste straw conveyed by the conveyance chain 6 is conveyed to the binding space S of the bundling device 5 through the cover 9, and is discharged into the field in a straw-bound state, and when the cover 9 is open, the conveyed waste straw is The structure is such that the straw is dropped and supplied to the shredding device 4, and the straw is discharged into the field in a shredded state.

The waste straw bundling device 7 is a bundling device equipped with a packer 10 that collects waste straw into a binding space S for collecting waste straw, a string supply needle 11, and a sensing door 12 that senses when the bundling pressure exceeds a set value. Part 13,
A knot part 16 is provided above the binding space S and includes a string holder 14 and a knot building 15.
and a discharge arm 17 for discharging the bundled straw bundles.
is arranged at a lower position of the bundling space S, and the sensing door 12 detects that the waste straw due to the scraping operation of the packer 10 has been collected by a set amount or more.
When detected, the internal one-turn clutch is activated, and the needle 11, knot portion 16, and discharge arm 17 are operated to bind the waste straw and discharge the bundled straw into the field. ing.

Three pairs of the packers 10 are connected to a packer drive shaft 18, and the needle 11 is inserted between the left and right pair of packers 10, 10, and the needle 11 is configured to move in the vicinity of the drive locus of the packer 10. This is to prevent waste straw from getting caught in the string passing hole 11a provided at the tip of the needle 11 as much as possible.

As shown in FIG. 1, the drive shaft 18 and the bundling input shaft 19 of the police car 10 are arranged concentrically in a left and right horizontal position, and one end of the bundling input shaft 19 has a bearing on the left side plate 20 of the body. The right end of the packer drive shaft 18 is supported by the needle case 21, and the other end of the drive shaft 18 and the other end of the binding input shaft 19 are connected to a pair of crank parts. 22, 22, and the one packer 10 is rotatably provided between both crank parts 22, 22 via a bearing.

A first gear 23 is fixed to the packer drive shaft 18 that is constantly rotationally driven by the binding input shaft 19, and a second gear 24 that meshes with the first gear 23 is loosely fitted to the needle drive shaft 25. This second gear 2
4 and the needle drive shaft 25, and when the sensing door 12 detects a predetermined amount of waste straw in the bundling space S, the door drive shaft 27 is driven. , the needle drive shaft 25 and the binding drive shaft 30 transmitted from the needle drive shaft 25 through the chain transmission mechanism 29 are driven via the one-turn clutch 28, and the binding drive shaft 30 is driven in synchronization with the string feeding by the needle 11 to close the knot. 1
6 and ejection arm 17 are configured to operate.

An input pulley 2 is fitted onto the protruding end of the left side plate 20 of the binding input shaft 19 so as to freely rotate, and a shift sleeve 3 operated by an operating lever 26 is fitted onto the end of the input shaft 19 with a spline. has been,
A binding clutch 1 consisting of a dog clutch is provided between the pulley 2 and the shift sleeve 3. That is, as shown in FIG. 2, a plurality of claws 2a, 3a are provided on opposing surfaces of the pulley 2 and shift sleeve 3, respectively, protruding in the rotational direction, and the engagement of the claws 2a, 3a causes the pulley to move 2 is configured to be able to enter and exit the binding input shaft 19 side via the shift sleeve 3.

The claw portions 2a provided on the pulley 2 are provided in three pairs with a phase difference of about 120 degrees in the rotational direction, and similarly the claw portion 3a of the shift sleeve 3 also has three pairs of claws 2a in the rotational direction.
Three pairs of protruding pairs are provided with a phase difference of 120 degrees, and each adjacent claw part 2 of the pulley 2 and shift sleeve 3
There is a shift sleeve 3 between a, 2a and 3a, 3a.
A meshing accommodating 1a is formed in which the pulley 2 and the pulley 2 can rotate relative to each other. This meshing flexibility 1a
The degree of
The dimensions are set to be sufficient to rotate the packer drive shaft 18 forward by about 90 degrees so as to move it forward and away from the movement locus.

Therefore, after stopping the driving of the police car 10,
When changing the stopping position of the packer 10, the packer 10 or its drive shaft 18 can be manually rotated forward by about 90 degrees. Even when the waste straw is clogged, the pack car 10 can be manually rotated forward relatively easily, so that waste straw can be quickly removed and cleaning can be performed relatively easily.

In the figure, 31 is a support frame on the machine body side, and 32 is a support arm that supports the binding input shaft 19 and the packer drive shaft 18.

[Another example]

The width dimensions of the claw portion 2a of the pulley 2 and the claw portion 3a of the shift sleeve 3, and the adjacent claw portions 2a, 2
a or 3a, the spacing between 3a and the number can be changed as appropriate. Further, the stem and culm binding device according to the present invention can also be applied to a harvester.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the stem culm binding device according to the present invention, FIG. 1 is a sectional view showing the power transmission system of the binding device, FIG. 2 is an explanatory diagram of the binding clutch, and FIG. 3 is an illustration of the waste straw processing device. FIG. 1...clutch, 1a...meshing flexibility, 10
... Police car, 11 ... Needle, 18 ... Police car drive shaft, S ... Binding space.

Claims (1)

[Claims for Utility Model Registration] 1. A bundler 10 for raking and supplying stem culms into the binding space S, and a needle 11 for supplying a binding string at a position near the driving trajectory of the bundler 10 are provided,
A stem culm binding device in which a clutch 1 is provided in the drive system to the drive shaft 18 of the packer 10,
The clutch 1 is constituted by a meshing clutch, and the meshing flexibility 1a of the clutch 1 is
The stem and culm binding device is set to a size that allows the packer drive shaft 18 to be rotated forward so as to move the packer 10 forward and away from the locus of movement of the needle 11. 2. The stem culm binding device according to claim 1, wherein the meshing flexibility is dimensioned to rotate the packer drive shaft 18 forward by about 90 degrees.