JPH0239207B2 - DATSUKOKUKINOSOKUBANHOKYOKOZO - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforcing structure for a side plate of a handling chamber in a threshing machine.

The handling chamber of the threshing machine is surrounded on four sides by the left and right side plates, the front plate, and the rear plate, and the handling barrel for threshing is pivotally supported on the left and right side plates, as well as the grain culm supply port and grain culm discharge port. The exits are opened respectively. The front plate is also provided with a handling opening for inserting grain culms. The grain culm, whose root part is held by the feed chain near the handling opening, is fed into the handling chamber through the grain supply opening, and is threshed while being conveyed along the handling opening, and then from the grain culm discharge opening. It is discharged.

As mentioned above, the handling chamber of the threshing machine where this type of threshing work is performed has a large handling barrel that rotates at high speed and is pivoted by the left and right side plates, so an extremely large bending moment acts on it, and a large amount of strength is required. be done. In particular, in a bottom-handling type threshing machine in which the tip of the grain culm is placed below the handling barrel for threshing, the tip of the grain is placed in the center of the rear side plate on the opposite side from the handling opening due to the rotational direction of the handling drum. Pressure is often concentrated, and conventionally there has been a problem that the side plate in this area is easily deformed.

The present invention has been made in view of the above-mentioned points, and the grain culm conveyance end side plate of the handling chamber that connects the front side plate and the rear side plate of the frame is connected by a grain lifting tube that is fixed to the rear side plate and stands upright. To provide a side plate reinforcing structure for a threshing machine which is configured to be supported at a plurality of upper and lower locations and whose strength is improved through a simple configuration. Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 6 show an embodiment of the side plate reinforcement structure for a threshing machine according to the present invention, FIG. 1 is a longitudinal sectional view of a threshing machine in which this is implemented, FIG. The figures are AA sectional view of Fig. 2 excluding the handling cylinder, Fig. 4 is a BB sectional view of Fig. 3, Fig. 5 is a perspective view of the main parts of the handling chamber, and Fig. 6 is a plan view of the handling chamber. be. In the figure, a frame 2 of a threshing machine 1 is integrally formed with a handling chamber 3 and a sorting chamber 4 extending from below to the rear. A handling cylinder 6 with handling teeth 5 is mounted on a shaft. A handling chamber receiving net 7 formed in an arc shape concentric with the handling barrel 6 is stretched behind and below the handling barrel 6, and its front end is connected to a casing 9 below the handling port 8 that opens forward. There is. Outside the handling port 8, a feed chain 10 and a clamping rod 11 extending in the axial direction of the handling barrel 6 are arranged to clamp the root of the threshing culm and convey it in the direction shown by arrow C in FIG. It is set up. Reference numeral 12 denotes a waste straw chain that takes over from the feed chain 10 and conveys the grain culms, that is, waste straw from the threshing machine.

A swinging shelf 13 that swings by the rotation of an eccentric cam (not shown) is installed in the sorting chamber 4, and inside the swinging shelf 13 there is a mesh of the handling room receiving net 7 and a drain opening opened at the grain culm conveyance terminal side. A grain sieve 15, a sorting net 16, a strorack 17, chaff sieves 18, 19, a sieve wire 20, etc. are provided for sorting the grains and dust particles falling from the dust port 14. Below the swinging shelf 13, there is a winnower 21 that blows sorting air into the swinging shelf 13, a No. 1 spiral conveyor 22 that transports the grains that have been sorted and fallen within the swinging shelf 13 for collection, and a swinging machine. A second spiral conveyor 23 for transporting second items that remain as a result of sorting and fall within the movable shelf 13 is mounted on a shaft with the axial directions parallel to each other. What is indicated by the symbol 24 is
It is a grain lifting cylinder that lifts and conveys the sorted grains transferred by the No. 1 spiral conveyor 22 and discharges them into the paddy tank 25, and is formed in a cylindrical shape and is connected to the No. 1 spiral conveyor 22 inside. A spiral conveyor is supported through the shaft. The grain barrel 24 is attached to a reinforcing member 26 with a band 27 fixed to the left and right side plates 2a, 2b and the rear side plate 2c of the frame 2 with bolts.
The lower end bearing portion 28 is supported by the rear side plate 2c, and is erected and attached to the rear side plate 2c. In addition, No. 2 spiral conveyor 23
A No. 2 grain lifting machine 30 is provided at the end of the transfer, which lifts and transports the transported No. 2 grains and returns them to the handling chamber 3 through the No. 2 return cylinder 29. Reference numeral 31 is a suction fan that sucks up light straw waste from the sorted material and discharges it out of the machine, and 32 is a straw cutter that cuts the waste straw and scatters it onto the field.

Next, the structure of the handling chamber 3 will be explained. The handling chamber 3 consists of a rear side plate 2c of the frame 2, a side plate 2a on the grain culm conveyance starting end side, and a front side plate 2d.
The other side is surrounded by the handling room side board 33.
covered with. The handling cylinder 6 is pivotally supported by the side plate 2a and the handling chamber side plate 33. Handling chamber side plate 3
3 is formed into a thin approximately triangular box shape with a plate-shaped portion and a standing edge around the entire circumference, and the front end surface and rear end surface are connected to the rear side plate 2c and the front side plate 2d with bolts 34 and 35, respectively. is fixed. When connecting the side plates 2c, 33 with the bolts 34, a pair of upper and lower support members 36, 37 welded to the grain lifting cylinder 24 are used.
are fastened together. That is, the handling chamber side plate 33 is supported by the grain lifting cylinder 24 at two upper and lower positions by supporting members 36 and 37.

The operation of the threshing machine configured as above will be explained. This threshing machine 1 is a bottom-handling type threshing machine that handles the tips of grain culms whose roots are held between a feed chain 10 and a lever 11, and threshes the grain by placing it below a barrel 6. The barrel 6 is rotating in the direction indicated by arrow D in FIG. Handling tooth 5 of this handling cylinder 6
The threshed grains fall onto the grain pan 15 through the mesh of the handling room receiving net 7 together with some straw waste, and are sorted while being transferred by the swinging of the swinging shelf 13. The grains that have fallen through the holes in the grain pan 15 are passed through the sorting net 16 and the chaff sieves 18 and 19.
After being sorted by the swinging of the swinging shelf 13 and the sorting wind from the winnowing rack 21, the paddy falls onto the No. 1 spiral conveyor 22 and is conveyed, lifted up inside the hoisting tube 24, and transported to the tank 25. Expelled inward. On the other hand, straw waste, ear cuts, skeins, etc. generated during threshing are transported through the handling chamber 3 and then fall from the dust outlet 14 onto the strorack 17 as waste matter. While this waste is conveyed by the swinging of the swinging rack 13 over the stroke rack 17 and chaff sheaves 18 and 19, the swinging and the sorting wind from the winnowing machine 21 and the suction fan 31
The grains are sorted by suction and some of the grains are recovered. Further, light straw waste and dust are discharged to the outside of the machine by a suction fan 31. The so-called second waste material remaining as a result of sorting falls between the lines of the sieving wire 20 onto the No. 2 spiral conveyor 23 and is conveyed, and is returned to the handling chamber 3 by the No. 2 grain lifting machine 30 where it is sorted. repeated. Further, the waste straw after threshing is transported by a waste straw chain 12, and then cut by a waste straw cutter 32 and distributed to the field.

In the above-mentioned threshing and sorting work, the threshed grains and the processed materials generated during threshing are stored in the handling room 3.
The grain culms for threshing are transported in the axial direction of the handling cylinder 6 by the spiral action of the handling teeth 5 due to the rotation of the handling cylinder 6, and the grain culm for threshing is conveyed in the same direction. Therefore, a large pressure acts on the side plates 2a, 2c, 2d and 33 of the handling chamber, and especially in the lower handling type threshing machine 1 in which the handling cylinder 6 rotates in the direction of arrow D, a large pressure acts on the rear side plate 2c. do. However, in this threshing machine 1, the front and rear side plates 2c, 2d
When bolting the handling chamber side plate 33 connecting the rear side plate 2c to the rear side plate 2c, by tightening the supporting members 36 and 37 welded to the grain lifting cylinder 24 together, the rear side plate The handling chamber side plate 33 is handled by a strong grain lifting cylinder 24 integrated with 2c.
Since the handling chamber 3 is supported, the entire handling chamber 3 is extremely strongly reinforced and will not be deformed even under large pressure.

As is clear from the above explanation, according to the present invention, in the threshing machine, the grain culm conveyance terminal end side plate 33 of the handling chamber 3 that connects the front side plate 2d and the rear side plate 2c of the frame 2 is fixed to the rear side plate 2c. The handling chamber 3 is extremely strongly reinforced by supporting the upper and lower parts of the grain lifting cylinder 24, which stands upright. Even if a bending moment is applied to each side plate 2a, 2c, 2d, 3
3 does not deform, and the durability of the frame 2 as a whole is significantly improved, and this effect is particularly noticeable in bottom handling type threshing machines that are prone to deformation.

[Brief explanation of drawings]

1 to 6 show an embodiment of the side plate reinforcement structure for a threshing machine according to the present invention, FIG. 1 is a longitudinal sectional view of a threshing machine in which this is implemented, FIG. The figures are AA sectional view of Fig. 2 excluding the handling cylinder, Fig. 4 is a BB sectional view of Fig. 3, Fig. 5 is a perspective view of the main parts of the handling chamber, and Fig. 6 is a plan view of the handling chamber. be. 1... Threshing machine, 2... Frame, 2c... Rear side plate, 2d... Front side plate, 24... Grain lifting tube, 26
... Reinforcement member, 27 ... Band, 28 ... Bearing section, 33 ... Handling chamber side plate, 34, 35 ... Bolt, 36, 37 ... Support member.

Claims (1)

[Claims] 1. A threshing device characterized in that a handling chamber side plate that connects the front side plate and the rear side plate of the frame at the terminal end of grain culm conveyance is supported at a plurality of upper and lower locations by grain lifting cylinders that are fixed to the rear side plate and stand upright. Machine side plate reinforcement structure.