JPS5810413Y2 - Anti-wrapping device for eccentric transmission body in reaper - Google Patents

Description

[Detailed description of the invention] If the rod that drives the cutting blade of the reaper is interlocked and connected to a crank pin attached to a transmission wheel by a pillow ball, the transmission mechanism can be significantly simplified and it is advantageous in terms of cost.

However, since the transmission wheel to which the crank pin is attached usually has to be placed near the shell culm conveyance path, it is easy for straw etc. to get wrapped around the small diameter crank pin located between the large diameter pillow ball receiver and the transmission wheel. Since the wrapped straw or other pillow ball boots constantly rotate relative to each other, there is a drawback that the pillow ball boots can be torn or cut.

The present invention prevents straw shavings, weeds, etc. from getting wrapped around the crank pin, damaging the pillow ball boots, and preventing straw shavings, weeds, etc. from getting caught in the transmission band wrapped around the transmission wheel to which the crank pin is attached. The present invention aims to provide a device for preventing the eccentric transmission body from wrapping in a reaper, in which a crank pin provided at an eccentric position on the lower surface of the transmission wheel is connected to a rod that drives the cutting blade via a pillow ball. In the reaper, between the transmission wheel and the pillow ball boot, a transmission band having a larger diameter than the pillow ball boot and hanging on the transmission wheel is provided with a transmission belt that protrudes outward from the inside of the transmission band at the starting end thereof. , is characterized by being equipped with a wrap prevention plate that retracts into the inside of the transmission band at the end of the rotation.

To explain the example shown in the drawings in more detail below, reference numeral 1 denotes a threshing device mounted on one side of the combine harvester platform 2, and the front part includes a cutting blade 3, a culm pulling body 4, etc. A reaping device 5 is mounted so as to be movable up and down, and between the reaping device 5 and the supply section of the threshing device 1, a stock conveyor belt '6 and a stem conveyor T are arranged. On the other side of the stand 2, from the front, there is a control panel 8, a seat 9, a paddy tank 10, and an engine 1.
1st prize is reserved.

Further, the power of the engine 11 is transmitted to a gear case 13 by a V-belt 12, and the gear case 13 distributes it to the threshing device 1 and the transmission 14 by internal gears. Horizontal axis 16 of pre-processing section such as conveyor belts 6 and 7
and distribute.

Further, the sprocket 16a attached to the horizontal shaft 16 drives a sprocket 18 attached to the input shaft 17a of the gear case 17, which is transmitted to the stock conveyor belt 6, via a chain 19, and a crank attached to the eccentric position of the sprocket 18 drives The pillow ball 21 at the tip of the pin 20 is fitted into a pillow ball receiver 23 attached to the upper end of the rod 22 that operates the cutting blade 3, and the pillow ball receiver 23 has a plate surface on the sprocket 18 side that surrounds the pillow ball 21. A pillow ball boot 24 filled with grease is also attached.

In the example shown in FIGS. 5 and 6, a winding prevention plate 25 is fixed to the crank pin 20 and has a diameter larger than that of the pillow ball boot 24 and protrudes outward like the chain 19 hooked on the sprocket 18. Therefore, when the sprocket 18 rotates, the anti-wrapping plate 25 closes to the pillow ball boot 2.
The part 25a that always covers the entire 40th circumference and projects outwardly projects from the same part of the chain 190.

Therefore, straw carried around by the chain 19 or straw debris, weeds, etc. that fall off from the culm being conveyed by the stock conveying belt 6 and the stem conveying belt T and try to intrude toward the crank pin 20 are wrapped. It is blocked by the outer part of the prevention plate 25 and is pushed out.

Even debris that attempts to enter from around the pillow ball receiver 23 is prevented from wrapping around the inside portion of the wrapping prevention plate 25.

Note that since both side edges of the winding prevention plate 25 are formed into parallel surfaces, the base of the crank pin 20 can be connected to the sprocket 1.
8, the spanner 26 can be fitted into the anti-wrapping plate 25, and can be easily attached/detached and screwed in.

FIGS. 7 and 8 show another embodiment, in which the wrapping prevention plate 25 is integrated with the pillow ball receiver 230 and the rod 22 side, and the outside is outside the rotating part of the chain 19. They are the same in that they protrude into the pillow ball boot 24 and have a larger diameter to cover the entire pillow ball boot 24, but since they do not rotate relative to the pillow ball boot 24, wear of the pillow ball boot 24 can be better prevented. can.

Generally, the upper part of the gear case 13 is formed in an arc shape along the outer periphery of the large-diameter drive gear 26, as shown in FIG. Since the oil filler port 27 is provided hanging down below the teeth, lubricating oil will not blow out from the oil filler port 2T even if the drive gear 26 is rotated in the forward or reverse direction, and straw, etc. will not fall onto the gear case. Even if the plug 28 is used, it quickly slides down the top surface of the stopper 28, so that straw and other debris will not accumulate and block the ventilation hole of the stopper 28.

Furthermore, as shown in FIGS. 1 and 3, a tension pulley 29 of the V belt 12 stretched between the V pulley of the engine 11 and the input pulley of the gear case 13 is fixed to a support frame 30. A U-shaped steady rest 31, which is wider than the width of the tension pulley 29, is provided.

The present invention provides a reaper in which a crank pin provided at an eccentric position of a transmission wheel is connected to a rod for driving a cutting blade via a pillow ball, as described above, in which the pillow ball boot is connected between the transmission wheel and the pillow ball boot. A wrap prevention plate with a larger diameter and protruding outward from the transmission band hanging on the transmission wheel is inserted, so the wrap prevention plate protects the entire outer surface of the pillow ball boot and prevents it from penetrating towards the crank pin. It is possible to prevent the pillow ball receiver from seizing and the pillow ball boot from being damaged by scattering straw and weeds by its rotation and thereby preventing them from becoming entangled.

In addition, the wrapping prevention plate is located on the lower surface of the transmission wheel and protrudes outward from the inside of the transmission band at the starting end of the transmission band wrapped around the transmission wheel, and extends to the inside of the transmission band at the end of the transmission band. Since the lubricating oil added to the transmission band is scattered during rotation, the receiver stops it during rotation and prevents it from adhering to the pillow ball boots, and also removes straw, weeds, etc. from the starting end of rotation. By pushing it outward and sticking it out to the end of the rotation, it is possible to prevent straw waste and the like from getting caught in the transmission wheel and transmission band.

[Brief explanation of the drawing]

The drawings show a part of the embodiment of the present invention, and FIG. 1 is a side view of the combine, FIG. Figure 3 is a perspective view of the belt steady rest, Figure 4 is a side view of the pre-processing section, Figure 5 is a sectional view of the main part, Figure 6 a is a side view of the same, and Figure 6 b is a side view of the pillow ball receiver. FIG. 7 is a sectional view of the main part of another example, and FIG. 8 is a side view of the same. 18... Sprocket, 19... Chain, 20...
...Crank pin, 21...Pillow ball, 22...
Rod, 23... Pillow ball holder, 24... Pillow ball boots.

Claims (1)

[Scope of utility model registration request] A crank pin provided at an eccentric position on the lower surface of the transmission wheel is connected to a rod for driving a cutting blade via a pillow ball. and a winding prevention plate is installed that protrudes outward from the inside of the transmission band at the starting end of the transmission band suspended on the transmission wheel to accompany the transmission band, and retracts into the inside of the transmission band at the end of the rotation. A winding prevention device for an eccentric transmission body in a reaper, characterized by: