JPH0520532U - Tine structure of grain culm raising device - Google Patents

Abstract

(57) [Summary] [Purpose] A tine that raises grain culms and rotates inside the case can be smoothly undulated without vibrating or making noise. [Structure] Grain culm is raised, and the bases 3a of the tines 3 are pivotally mounted at regular intervals of the chain 2 suspended in the case 1 so that the tines 3 are raised and the grain is moved out of the case 1. In the culm raising device, a rib 4 is formed in the middle of the tine 3 having a U-shaped cross section near the tip 3b side, and from the tip of the rib 4 outside the rear side edge 3c of the tine 3. A thin projecting piece 5 that extends obliquely to the chain 2 and can come into contact with the chain 2 is provided in a protruding manner. The ribs 6 and 6 are formed respectively.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tine structure of a grain culm raising device capable of raising and lowering a grain culm by retracting from a case.

[0002]

[Prior Art]

 Conventionally, in a grain culm raising device configured so that the tines are raised and retracted from the inside of the case by pivotally attaching the bases of the tines at regular intervals of a chain suspended in the case. As disclosed in Japanese Utility Model Publication No. 51-35530 and Japanese Utility Model Publication No. 59-38736, it is known that a rib is specially formed inside a tine having a U-shaped cross section.

[0003]

[Problems to be solved by the device]

 However, even with such a tine structure, when the tongue is raised and abuts against the outer circumference of the roller in the case or against the upright metal to stand up, it instantly stands up, so the load at the time of standing up becomes large. Cause pulsation, vibration and noise.In particular, recent combine harvesters have become faster, and the chain speed has also increased, causing more vibration and noise. There is.

[0004]

[Means for Solving the Problems]

 The present invention solves such a problem and devised so that the tine can be smoothly undulated. Therefore, a rib is formed inside the tine, which has a U-shaped cross section, near the tip side. In addition, a thin projecting piece that extends obliquely outward from the rear side edge of the tine and can abut against the chain is projected from the tip of the rib, and the inside of the intermediate portion that is closer to the base side of the tine is provided. On both sides, low profile ribs that can be wrapped around the chain are formed.

[0005]

[Effect] Therefore, when the tine is pulled up, retracts into the case, and falls down to the chain side, the tine moves toward the chain until the thin rib inside the tin is engaged and the tip of the protruding piece contacts the chain. When it is pulled up from that state and turned on the drive sprocket side of the case, it can be lightly fixed by wrapping it with a thin rib, so the tine flaps as before. In addition, when the base of the tine comes into contact with the outer periphery of the roller and stands up and protrudes out of the case, the tip of the slanted projection is pressed so that it is pressed against the chain side. Therefore, the load on standing up is small and the tines can stand up smoothly.

[0006]

【Example】

 1 to 5, FIG. 4 shows the inside of a grain culm raising device that is obliquely installed in the front part of the mowing part in the combine, and inside the grain culm raising case 1, there are a lower roller 7 and an upper drive. The chain 2 is hung on the wheel 8 and the guide wheel 9, and the bases 3a of the tines 3 are pivotally attached to each other via the fulcrum pins 10 at regular intervals of the chain 2, and the elastic guide 11 is provided on the upper part of the case. When the base 3a of the tine 3 comes into contact with the outer periphery of the roller 7 and the inner rail 12 of the working side of the case, the tine 3 projects out of the case, and the top of the case and the non-working side Inside, the tine 3 is set in the same way as the conventional structure.

Similar to the conventional type, each tine 3 has a U-shaped cross section to form a low rib 13 inside the base portion 3a, but inside each tine 3 in the middle portion near the tip 3b side. The rib 4 is integrally formed, and a thin shape 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 contact the chain 2. Of the tines 3, and low thin ribs 6, 6 that can be wrapped around a part of the outer periphery of the chain 2 are formed on both inner side surfaces of an intermediate portion of each tine 3 which is close to the base portion 3a side. Further, a guide plate 14 inclined so as to approach the chain 2 side from the inner side surface of the case is installed inside the non-acting side opening near the lower part of the raised case 1, and the upper part of the vicinity of the roller 7 A guide plate 14a is further installed inside the lower part of the non-acting side opening. Constitute.

FIG. 6 shows another embodiment, which has substantially the same structure as that of the above embodiment as indicated by the same reference numeral, but the protrusion 5 is a spring plate which can be inserted and attached in the rib 4. It is composed of

Therefore, when the tine 3 is pulled up and retracts above the working side of the case 1 and falls down to the chain 2 side, the thin ribs 6 and 6 in the tine 3 partially cover the chain 2. When the tine 3 is lapped and the tip 5 of the projecting piece 5 comes into contact with the chain 2, the tine 3 can be pulled down toward the chain 2 and fall down, and when the outer circumferences of the drive wheel 8 and the guide wheel 9 are rotated from that state. Is lightly fixed to the chain 2 side by wrapping it with thin ribs 6 and 6, so that the tine 3 can be rotated without fluttering as in the conventional case. When the downwardly moving tine 3 comes into contact with the guide plate 14, the tine 3 is pressed against the chain 2 side by the guide plate 14 as shown in FIGS. 4 and 5, and the tip 3b of the tine 3 is guided by the guide plate 14. If you move away from the end of the The tine 3 is smoothly erected, and the base 3a of the tine 3 in the erected state abuts the outer circumference of the roller 7, so that the load on the tine 3 is small and the tine 3 can be smoothly erected.

[0010]

[Effect of the device]

 As described above, according to the present invention, when the tine 3 is pulled up, retracts into the case 1 and falls down to the chain 2 side, the tip of the projecting piece 5 abuts on the chain 2 and a part of the chain 2 is thinned. Until the shaped ribs 6 and 6 wrap, they can be laid down smoothly with less impact, and when they are raised and rotated on the drive sprocket side in the upper part of the case 1, the thin ribs 6 and 6 Since the tine 3 is lightly fixed by wrapping it around, the tine 3 can rotate satisfactorily without fluttering as in the conventional case, and the nose 3a of the tine 3 contacts the outer circumference of the roller in the lower part of the raising case 1. In the case of contacting and standing up, the projecting piece 5 can be pressed against the chain 2 side by that time, and the elastic force of the projecting piece 5 can bring the tine 3 into the standing state. Tine with less time load The will be able to stand up smoothly, with the Features that can be suitably carried out in the simple structure also manufactured easily with a vibration and noise can be satisfactorily prevented.

[Brief description of drawings]

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

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

3 is a sectional view showing a section taken along line III-III in FIG.

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

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

FIG. 6 is a cross-sectional view showing another embodiment.

[Explanation of symbols]

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

Claims (1)

[Scope of utility model registration request] 1. The tine 3 is raised and hung in the case 1 at fixed intervals, the bases 3a of the tines 3 are pivotally attached to the tines 3 so that the tines 3 are raised and move out of the case 1. In the constructed grain culm raising device, ribs 4 are internally provided in the intermediate portion near the tip 3b side of the tine 3 having a U-shaped cross section.
The chain 2 is formed so as to extend obliquely outward from the rear side edge 3c of the tine 3 from the tip of the rib 4.
A thin projecting piece 5 that can come into contact with each other is formed, and low thin ribs 6 and 6 that can be wrapped around the chain 2 are formed on both inner side surfaces of an intermediate portion of the tine 3 that is closer to the base 3a side. A tine structure characterized by being configured as follows.