JPH0542885B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides a tapered cone-shaped holder body that is mounted on a drive rotating shaft protruding from a fixed bracket, and a spring that acts from the outside of the holder body. The present invention relates to a string holder structure for a stem and culm tying device, in which a tying string is clamped between the outer circumferential surface of a holder body and a string clamping piece protruding from a fixed bracket.

[Conventional technology]

An example of a string holder structure for a stem culm binding device used in combine harvesters, binders, etc. is shown in Japanese Utility Model Application Publication No. 142540/1983.

In this conventional string holder, as shown in FIG. 10, the outer end of the spring 15 that biases the holder body 13 toward the fixed bracket 8
4, and is supported by a fixing bolt 19 attached to the end of the drive rotation shaft 12.

[Problem that the invention seeks to solve]

There is a relatively large amount of straw waste separated from the stem culms to be tied near the stem culm binding device, and there is also string waste near the string holder. Therefore, in a string holder that is rotatably driven while having a holding sliding portion between it and the string holding piece, it is necessary to periodically disassemble and clean it in order to maintain normal operation.

In the conventional structure shown in FIG. 10, in order to disassemble the string holder, the fixing bolt 19 is
Then, the spring 15 and holder body 13 are removed one by one from the drive rotation shaft 12 in this order. Further, the string holder and the like are often covered with a knotting mechanism cover and the like.

Therefore, the work of disassembling and removing the string holder one part at a time inside the knotting mechanism cover, etc., as described above, leaves room for improvement from the viewpoint of maintainability.

An object of the present invention is to configure a stem culm binding device so that the string holder can be easily disassembled and removed.

[Means for solving problems]

The feature of the present invention is that the string holder structure of the stem and culm binding device as described above is configured as follows.

The holder body is configured to be inserted into and removed from the drive rotation shaft, and the reaction force receiving member that supports the outer end of the spring is slidable in the axial direction of the holder body and is attached to the holder body in a manner that prevents it from coming off. In addition, the knotting mechanism cover that covers the knotting mechanism is configured to be able to swing open and close, so that the knotting mechanism cover in the closed position presses and displaces the reaction force receiving member against the spring.

[Effect]

If configured as described above, for example, FIGS. 1 and 2
As shown in the figure, the spring 1 is attached to the holder body 13.
5 and the reaction force receiving member 14, these three become one unit-like part.

This allows the knot mechanism cover 9 to be in the closed position.
If the opening operation is performed, the holder main body 13, the spring 15, and the reaction force receiving member 14 can be inserted into and removed from the drive rotation shaft 12 as one body.
Furthermore, since the knotting mechanism cover 9 that covers the knotting mechanism A such as the string holder H is configured to be able to swing open and close, the above-mentioned integrated holder main body 13 and the like can be easily inserted and removed without being obstructed by the knotting mechanism cover 9.

For example, as shown in FIGS. 1 and 2, the biasing force from the spring 15 is applied to the holder body 13 by the knot mechanism cover 9 in the closed position, which causes the reaction force receiving member 14 to be applied to the spring 15.
This can be obtained by pressing and displacing it to the side.

[Effects of the Invention] As described above, the string holder can be easily assembled by simply inserting the holder main body, spring, and reaction force receiving member into the drive rotating shaft as one unit-shaped component and closing the knotting mechanism cover. Once assembled, the holder main body etc. can be taken out in one piece simply by opening the knotting mechanism cover, improving the maintainability of the string holder of the stem and culm binding device.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 8 is a side view of the vicinity of the rear part of an agricultural combine, in which a knotter mechanism A consisting of a knotter bill B and a string holder H, and a release arm 1 are arranged below the binding space S, and the knotter mechanism A is arranged below the binding space S. A needle 3 that supplies the tying string 2, a packer 4 that feeds the waste straw W into the knotting space S, and a door 5 that detects that the waste straw W has been fed into the tying space S beyond a set value.
is arranged above the binding space S to constitute a waste straw binding device installed in a combine harvester as an example of a stem culm binding device.

The binding mechanism A is constructed as shown in FIG. That is, a substantially V-shaped frame 7 is fixed to the end of a support frame 6 arranged horizontally in the left-right direction of the machine, and a fixing member that supports the knotter bill B and the string holder H across both extensions of the frame 7. Bracket 8 is attached. And frame 7
A string guide plate 9 (corresponding to a knotting mechanism cover) forming the lower surface of the binding space S is swingably supported around the horizontal axis P ₁ of the extending end on the front side of the body.
As shown in the figure, a lock pin is inserted into the locking hole at the tip of the connecting portion 9a extending from the swinging end of the string guide plate 9, and the lock pin is biased toward the projecting side by a spring 10 at the other extending end of the frame 7. 11, the string guide plate 9 is fixed in the normal closed position.

Next, the string holder H will be explained. As shown in FIG.
protrudes, and a holder main body 13 having a tapered cone-shaped outer circumferential surface 13a is inserted into and removed from the drive rotation shaft 12 with a spline structure, and the drive rotation shaft 12
It is attached so that it can slide freely in the axial direction. A ring member 14 (corresponding to a reaction force receiving member) is fitted onto the holder main body 13 so as to be slidable and rotatable with respect to the holder main body 13. A spring 15 is provided between it and the back surface.

A stopper ring 16 is attached to the holder body 13 to prevent the ring member 14 from retreating beyond the set value and to prevent the ring member 14 from coming off. It is configured so that it can be inserted and removed. Furthermore, as shown in FIG. 5, one of the spline teeth of the drive rotation shaft 12 is made to have a different shape from the other spline teeth, so that the holder main body 13 etc. can be attached to the drive rotation shaft 12 only at the set rotational phase of the drive rotation shaft 12. It can be installed.

On the other hand, a partially mortar-shaped string clamping piece 17 extends from the fixed bracket 8.
The binding cord 2 is held between the inner surface of the holder body 13 and the outer peripheral surface 13a of the holder body 13. As shown in FIGS. 1 and 4, a tapered step is provided on the drive rotation shaft 12 between the outer circumferential surface 13a of the holder body 13 and the fixed bracket 8 to prevent straw waste, string waste, etc. from accumulating. part 12b, drive rotation shaft 12 and string clamping piece 1
A convex portion 12a is provided to scrape out straw waste, string waste, etc. that accumulate between the handle and the handle 7.

Outer peripheral surface 13a of holder body 13 and string clamping piece 17
The string clamping force between the ring member 14 and the strap clamping piece 17 is obtained by pressing the holder main body 13 against the cord clamping piece 17 by the biasing force of the spring 15. 8 side. Then, as shown in FIGS. 2, 3, and 6, the ring member 14
There are two sets of large and small convex locking parts 14a and 14b.
A pair of support seats 9b are provided on the inner surface of the string guide plate 9 and have recesses for locking. That is, when the ring member 14 is rotated to close the string guide plate 9, the large locking portion 14 of the ring member 14
whether the support seat 9b of the string guide plate 9 presses and supports a;
Alternatively, by pressing and supporting the small locking portion 14b, the position of the ring member 14 relative to the holder body 13 can be changed, and the biasing force of the spring 15 can be switched between high and low levels.

In the string holder H configured as described above, the string 2
The starting end side of is pinched. The string guide plate 9 has a third
As shown in the figure, a guide hole 9c is opened, and a string receiving member 18 made of an elastic wire is attached with an initial biasing force applied along the guide hole 9c. String 2 whose starting end is held by string holder H
is wound from the string holder H to the intersection of the guide hole 9c of the string guide plate 9 and the string receiving material 18, to the waste straw W, and to the tip of the needle 3, as shown in FIG.

When the pressure from the waste straw W acting on the door 5 that receives the waste straw W exceeds a set value, the needle 3 descends to the knotting mechanism A side and transfers the proximal end of the string 2 to the string holder H. Notter Building B
The binding process is carried out by

Next, the mounting structure of the door 5 will be explained. As shown in FIG. 7, the arm portion 22 extending from the support shaft 21 is provided with three protrusions 22a.
On the other hand, the door 5 has three locking holes 5a.
By pushing into two of the two protrusions 22a of the three locking holes 5a, several types of postures can be selected. The fixation is also performed by inserting one beta pin 23 over the three protrusions 22a.

[Another example]

A locking portion 14a provided on the ring member 14 described above,
14b as shown in FIG. 9, a pair of locking portions 14
A ring-shaped support seat 20 is provided on the back side of the string guide plate 9, and a pair of locking recesses 20a having different depths and arranged in the diametrical direction are provided in the support seat 20. , 20b may be provided in two sets with different phases. And the string guide plate 9
When the ring member 14 is closed, the biasing force of the spring 15 is determined by whether the pair of locking portions 14a provided on the ring member 14 are engaged with the shallow locking recess 20a or the deep locking recess 20b. It switches between high and low levels.

[Brief explanation of drawings]

The drawings show an embodiment of the string holder structure of the stem culm binding device according to the present invention, and FIG. 1 is a side view of the knotting mechanism;
Figure 2 is a cross-sectional view taken from the - direction in Figure 1, Figure 3 is a plan view of the string guide plate, and Figure 4 is the first
A cross-sectional view taken from the - direction in the figure, FIG. 5 is a cross-sectional view taken from the - direction in FIG. 1,
Fig. 6 is a cutaway perspective view of the string holder head and the vicinity of the string guide plate, Fig. 7 is a side view of the door, Fig. 8 is an overall side view of the waste straw binding device, and Fig. 9 is a view of the vicinity of the string holder head. FIG. 10 is a cutaway perspective view showing another embodiment, and FIG. 10 is a sectional view showing a conventional string holder structure. 2... String, 8... Fixed bracket, 9... Knotting mechanism cover, 12... Drive rotation shaft, 13... Holder main body, 13a... Outer peripheral surface of holder main body, 14...
...Reaction force receiving member, 15... Spring, A... Knotting mechanism.

Claims (1)

[Claims] 1. Drive rotation shaft 1 protruding from fixed bracket 8
A tapered cone-shaped holder body 1 is fitted onto the outside of the holder body 2.
3 is biased toward the fixed bracket 8 by a spring 15 acting from the outside of the holder main body 13, and is tied between the outer circumferential surface 13a of the holder main body 13 and the string clamping piece 17 protruding from the fixed bracket 8. The holder body 13 of the stem culm binding device is constructed to be able to be inserted into and removed from the drive rotation shaft 12, and supports the outer end of the spring 15. The reaction force receiving member 14 is attached to the holder body 13 so as to be able to slide freely in the axial direction of the holder body 13 and not come off, and the knot mechanism cover 9 that covers the knot mechanism A is configured to be able to swing open and close. , the reaction force receiving member 14 is connected to the spring 1 by the knotting mechanism cover 9 in the closed position.
5. A string holder structure of a stem culm binding device configured to be pressed and displaced against 5. 2. A string holder structure for a stem and culm binding device according to claim 1, wherein the knotting mechanism cover 9 is a string guide plate having a string guide function.