JPH0326Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a stationary threshing machine or a threshing machine mounted as a threshing device on the stand of a harvester or combine harvester.

(b) Prior art Conventionally, the machine frame of a threshing machine was constructed by connecting the front and rear walls of the handling chamber with side plates made of iron plates, and the transmission shaft that crossed the rear of the handling chamber was supported by the side plates. was.

(c) Problems to be solved by the invention The machine frame of the known threshing machine used the side plate as a component of the machine frame, thereby reducing the size and weight of the threshing machine and reducing the cost. As the performance increases or the machine size increases, the load increases, and the machine frame deforms, reducing threshing performance, making transmission unsmooth, and deforming the side plate opposite to the handling port, which causes dust removal. This affected the fan, changing the direction in which the dust was sucked in, resulting in a decrease in air selection performance.

(d) Means to solve the problem In order to solve the above-mentioned problem, it would be possible to increase the strength by thickening the side plates and other parts of the frame, but this would increase the weight of the machine and increase the cost. As a result, the above-mentioned purpose of reducing the size and weight cannot be achieved.

Therefore, in this invention, the side opposite to the handling opening of the cylinder frame in which the transmission shaft that crosses the dust separation room at the rear of the handling room is housed,
By supporting the grain lifting cylinder and the fan case of the dust removal fan on a frame that connects them, the load on the cylinder frame that supports the transmission shaft is shared by the grain lifting cylinder, making the machine strong while preventing increases in weight and cost. The above-mentioned problems were solved by creating a new machine frame.

(F) Embodiment An embodiment of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a handling barrel which is mounted on a front wall 2 and a rear wall 3 and is housed in a handling chamber 4, similar to a conventional threshing machine. A feed chain 7 and a pinching rail 8 are installed on the outside of the chamber, and on the opposite side from the handling port 6 there is a grain lifting cylinder 10 rising from the transfer end of the first transfer spiral, and at the rear of the dust sorting chamber 5. The fan case 12 of the provided dust exhaust fan 11 is attached, and a swinging sorting body is oscillated back and forth in the sorting air path composed of the blower fan 13 provided at the lower part of the handling chamber 4 and the dust exhaust fan 11. It is constructed in such a way that

Further, the input pulley 16 attached to the second transfer helical shaft 15 is driven by the engine 17 via the V-belt 18, and the pulley 20 of the first transfer helical shaft and the pulley 13a of the blower fan 13 are connected to the second transfer helical shaft 15.
A sprocket 25 is driven via a V-belt 22 by a counter pulley 19 attached to the shaft, and is fixed to the same shaft as the drive sprocket 23 on which the feed chain 7 is attached. It is driven by

Wheel bodies 28a and 28b, which hang the front and rear parts of the feed chain 7, are pivotally supported by a support frame 30, which projects rearward from the handling chamber 4 and supports the rear wheel body 28b. A portion corresponding to the transmission shaft 31 is formed into a U-shaped portion 32 in plan view, bypassing the wheel body 28b, and a U-shaped pipe frame 33 whose lower side is connected to the rear portion of this U-shaped portion 32 is It is connected to the rear frame 34 with bolts 35, and a portion that bypasses the straw stock original movement route and extends forward through the upper part is attached to the front wall 2 and the rear wall 3.

Further, the mounting plate 36 welded to the front part of the grain lifting cylinder 10 is screwed to the side plate 37, the mounting plate 38 welded to the rear part, and the mounting plate 3 welded to the fan case 12.
9 are connected by a plate-shaped frame 40, and the frame 40 and the U-shaped portion 32 of the support frame 30 are connected by a cylindrical frame 41 in which the transmission shaft 31 is housed.

Further, a support pipe 43 installed between the frame 40 and a stay 42 protruding rearward from the rear wall 3 is equipped with a straw removal transmission shaft 45, and the straw removal transmission shaft 45 is connected to the grain lifting cylinder 10 of the transmission shaft 31. The straw removal drive shaft 50 of the parallel straw removal chain 47 and straw removal belt 48 is driven by the straw removal transmission shaft 45 via a bevel gear 51.

When the above-mentioned threshing machine is used as a threshing device of a combine harvester, for example, the grain culm that has been harvested and transported is transferred to the feed chain 7 and the pinching rail 8, where it is pinched and transported, and the ear side is transferred from the supply port to the handling chamber 4. The grains and small straw waste that leaked out from the receiving net in the handling room 4 are sieved by the swinging sorter and wind-selected in the sorting air passage, and the straw waste is passed through the dust outlet. and is discharged from the dust exhaust fan 11 to the outside of the machine.

Further, the waste straw is transferred from the end of the feed chain 7 to the waste straw conveying device, passes over the waste sorting chamber 5, and is discharged to the rear.

When a large amount of grain culm is continuously supplied as in a combine harvester, an extremely large load is placed on the handling cylinder 1 that threshes the grain, the feed chain 7 that transports the grain culm, and the straw conveying device.

In particular, shafts that cross the machine body, such as the power transmission shaft 31 that serves as the drive source for the feed chain 7 and the straw removal conveying device, are subject to a large tensile force in the longitudinal direction only on one side of the machine frame, so the machine body tends to deform. However, one end of the cylinder frame 41 housing the transmission shaft 31 is attached to the support frame 30 of the feed chain 7, and the other end is attached to the grain lifting cylinder 10, which has a large supporting force, and the fan case 12 of the dust removal fan 11. Since it is supported by the connected frame 40, it is possible to prevent the side plate 37 from being deformed on the side opposite to the handling port 6 and from spreading it to other parts, and also to prevent the side plate 37 from deforming on the side opposite to the handling port 6 and from spreading to other parts. Smooth transmission can be achieved.

(f) Effect of the invention As mentioned above, the present invention is equipped with a transmission shaft 31 that crosses the dust sorting chamber 5 at the rear of the handling chamber 4, and a grain lifting cylinder 10 and a dust exhaust fan 11 are installed on the opposite side from the handling opening 6. In the installed threshing machine, the side opposite to the handling port 6 of the transmission shaft 31 is connected to the grain lifting cylinder 10 and the fan case 12 of the dust removal fan 11.
are connected by a frame 40, and the frame 40 and the support frame 30 of the feed chain 7 are connected to the transmission shaft 31.
is installed internally and connected by the cylindrical frame 41, so even if a large load is applied in the longitudinal or vertical direction to the end of the transmission shaft 31 that crosses the fuselage, the transmission that crosses the dust sorting chamber 5 The side opposite to the handling opening 6 of the cylinder frame 41 in which the shaft 31 is housed is firmly supported separately from the side plate 37 by a frame 40 that connects the grain lifting cylinder 10 and the fan case 12 of the dust removal fan 11. As a result, it is possible to reliably prevent the side plate 37, which is a component of the machine frame, from being deformed, and the deformation spreads to other parts, for example, changing the direction of the dust exhaust fan 11 and changing the suction direction. By doing so, it is possible to prevent wind selection performance from deteriorating and transmission from becoming unsmooth.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
FIG. 1 is a perspective view of a machine frame of a threshing machine, FIG. 2 is a side view of the same, and FIG. 3 is a partially sectional plan view. 4... Handling room, 5... Dust sorting room, 10... Grain removal tube, 11... Dust extraction fan, 12... Fan case, 30... Support frame, 31... Transmission shaft, 40...
Frame, 41...Cylinder frame.

Claims (1)

[Scope of utility model registration request] In a thresher that is equipped with a transmission shaft 31 that crosses the dust sorting chamber 5 at the rear of the handling chamber 4, and is provided with a grain lifting cylinder 10 and a dust exhaust fan 11 on the opposite side of the handling port 6, the transmission shaft 3
1, the grain lifting cylinder 10 and the fan case 12 of the dust removal fan 11 are connected by a frame 40 on the side opposite to the handling port 6 of the feed chain 7, and a transmission shaft 31 is installed inside the frame 40 and the support frame 30 of the feed chain 7. cylinder frame 41
A threshing machine frame characterized by being connected at.