JP2571166Y2 - Tine structure of cereal stem raising device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tine structure of a grain stalk raising device capable of moving out of a stalk raising case and raising a stalk.

[0002]

2. Description of the Related Art Conventionally, a grain is constructed such that the base of each tine is pivoted at regular intervals of a chain wrapped in a cereal stem raising case and the tine is raised to move out of the case. In the culm raising device, the actual opening of the culm is 51-35530.
It is known that a rib is specially formed inside a tine having a U-shaped cross section, as disclosed in Japanese Unexamined Patent Application Publication No. 59-38736 and Japanese Utility Model Application Laid-Open No. 59-38736.

[0003]

However, even with such a tine structure, when the tan is raised and comes into contact with the outer periphery of the roller in the case or the erection pad, it is instantly erected. The load at the time of standing up is large, causing the chain to pulsate, causing vibration and noise.In particular, recent combiners have been accelerated, and the speed of the chain has also been increased, resulting in severe vibration and noise. Has become
It has such a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised to solve such a problem and to allow the tine to smoothly rise and fall. Therefore, the tine having a U-shaped cross section is closer to the tip end side. to form a rib on the inside in the middle portion, from the tip of the rib projecting a protruding piece which can contact the chain extending obliquely outwardly from the rear side edge of the tine, proximal side of the said tine On both inner side surfaces of the intermediate portion, ribs that can be wrapped around the chain are formed.

[0005]

Therefore, when the tine is raised and retracts into the case and falls down to the chain side, the tine is rubbed to the thin rib in the tine and the tine is moved to the chain side until the tip of the protruding piece contacts the chain. It can be brought down and fall down, and when it is raised from that state and turned on the drive sprocket side of the case, it can be wrapped around the thin ribs and lightly fixed, so the tine does not flutter as in the past When the tine base comes into contact with the outer periphery of the roller and protrudes out of the case while standing upright, the tip of the inclined protruding piece comes into contact with the chain side so as to be pressed against the chain side. In addition, the load at the time of standing up is small, and the tine can stand up smoothly.

[0006]

1 to 5, FIG. 4 shows the inside of a grain stalk raising device obliquely provided in front of a cutting section in a combine, and a lower roller 7 is provided inside a grain stalk raising case 1. As shown in FIG. The chain 2 is mounted on the drive wheel 8 and the guide wheel 9 above, and the base 3 of each tine 3 is provided at regular intervals of the chain 2.
a are pivotally connected via fulcrum pins 10 and elastic guides 11 are mounted on the upper part of the case.
Abuts the outer periphery of the roller 7 and the rail 12 on the inner side of the working side of the case, so that the tine 3 protrudes out of the case, and the tine 3 retracts in the upper part of the case and inside the non-working side B. And the same structure as the conventional structure.

Each of the tines 3 has a U-shaped cross section as in the conventional type and forms a low rib 13 near the base 3a side. 4 is integrally formed, and a thin protrusion integrally formed so as to extend obliquely outward from the rear side edge 3 c of the tine 3 from the tip of the rib 4 so as to be able to abut on the chain 2. Pieces 5 are protruded, and low thin ribs 6 and 6 that can be wrapped around a part of the outer periphery of the chain 2 are formed on both inner side surfaces of the intermediate portion near the base 3a side of each tine 3, respectively. A guide plate 14 that is inclined so as to approach the chain 2 side from the inner surface of the case is installed inside the non-operation side opening that is closer to the lower portion of the raising case 1, and the non-operation side that is located above and near the roller 7 is inactive. A guide plate 14 is further provided inside the lower portion of the side opening.
a is constructed.

FIG. 6 shows another embodiment, which is constructed in substantially the same manner as the above embodiment, as indicated by the same reference numerals, except that the protruding piece 5 is a spring plate which can be inserted and mounted in the rib 4. It is configured.

Therefore, when the tine 3 is raised and retracts above the working side b of the case 1 and falls down to the chain 2 side, a part of the chain 2 is wrapped around the thin ribs 6 and 6 in the tine 3. At the same time, the tine 3 is moved toward the chain 2 and falls down until the tip of the protruding piece 5 comes into contact with the chain 2, and when the outer periphery of the drive wheel 8 and the guide wheel 9 is rotated from this state, the tine 3 becomes thin. Since the tine 3 is wrapped around the ribs 6 and 6 and lightly fixed to the chain 2 side, the tine 3 can rotate without fluttering as in the conventional case, and the tine moves downward in the case on the non-operating side. When 3 comes into contact with the guide plate 14,
As shown in FIGS. 4 and 5, the tine 3 is pressed against the chain 2 by the guide plate 14, and when the tip 3 b of the tine 3 is separated from the end of the guide plate 14, the tine 3 is repelled by the resilient force of the projecting piece 5. Is smoothly raised, and the load at the time when the base 3a of the raised tine 3 comes into contact with the outer periphery of the roller 7 becomes small, so that the tine 3 can be raised smoothly.

[0010]

As described above, according to the present invention, when the tine 3 is raised and retracts into the case 1 and falls down to the chain 2 side, the tip of the protruding piece 5 contacts the chain 2 and Some ribs
Until 6, 6 wraps, it can be laid down smoothly with little impact, and when it is raised from that state and turned on the drive sprocket side in the upper part of the case 1,
Since the tine 3 is lightly fixed by being wrapped around the ribs 6 , 6 , the tine 3 can be rotated well without fluttering as in the conventional case. When 3a comes into contact and stands up,
By that time, the protruding piece 5 can be pressed against the chain 2 side, and the resilient force of the protruding piece 5 can make the tine 3 stand up. It can be erected smoothly, has a feature that vibration and noise can be satisfactorily prevented, and a simple structure that is easy to manufacture can be suitably implemented.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a tine according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a section taken along line II-II of FIG. 1;

FIG. 3 is a sectional view showing a section taken along line III-III of FIG. 1;

FIG. 4 is a sectional view showing the inside of a raising case.

FIG. 5 is a side view showing an operation state of a main part.

FIG. 6 is a sectional view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grain stem raising case 2 Chain 3 Tine 3a Base 3b Tip 3c Edge 4 Rib 5 Projection piece 6 Thin rib

Claims (1)

(57) [Scope of request for utility model registration] 1. At regular intervals of a chain 2 mounted in a case 1 in which a cereal stem is raised, a base 3a of each tine 3 is pivotally connected so that the tine 3 is raised and moves out of the case 1. In the cereal stem raising device thus configured, a rib 4 is provided inside the tine 3 having a U-shaped cross section at an intermediate portion near the tip 3b side.
From the tip of the rib 4, and extends obliquely outward from the back side edge 3 c of the tine 3 to form the chain 2.
A protruding piece 5 that can abut against the base 3a of the tine 3;
A tine structure characterized in that ribs 6 , 6 which can be wrapped around the chain 2 are formed on both inner side surfaces of the intermediate portion which is closer to the side.