JPH0644352Y2 - Threshing device support net support structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a synthetic resin net used for a threshing device mounted on a combine, a harvester or the like.

[0002]

2. Description of the Related Art Conventionally, receiving nets made of synthetic resin materials include, for example, Japanese Utility Model Publication No. 36-15021 and Japanese Utility Model Publication No.
As disclosed in Japanese Patent Publication No. 4-14964, there is known one in which a receiving net having a grid-like mesh is integrally resin-molded.

[0003]

【Problems to be solved by the invention】
Unlike the so-called crimp net, which is constructed by braiding metal wire rods, there are no gaps at the intersections of the vertical and horizontal wire rods, so it is less likely to cause clogging due to bite-in accumulation of straw debris and to prevent corrosion. In addition, the resin itself has a property that it is difficult for wet straw chips and the like to adhere due to the water repellency and surface slipperiness of the resin itself, and has a strong advantage in threshing a wet crop. However, on the other hand, since the rigidity is lower than that of the metal material, there are the following problems to be taken into consideration when putting the resin net into practical use in terms of durability against load during installation and threshing work.

(Consideration on Attachment of Resin Net) When the resin net is simply connected to the frame with bolts, the head of the bolt projects onto the net, and the processed material is caught there and remains. Easy to cause. Further, when the bolt is screwed in, if the receiving net is excessively tightened, the bolt insertion hole is damaged and destroyed. Therefore, it is necessary to pay sufficient attention to the setting of the tightening torque, which makes the tightening operation troublesome. Further, if the receiving net is directly tightened with a large torque, the bolt insertion hole may be plastically deformed during use, or it may be broken and play may occur. On the other hand, if the tightening torque is insufficient, the bolt will loosen in the early stage of use. In this way, there are many problems in mounting the resin nets,
As a result of research, it has been found that it cannot be put to practical use without solving these problems.

(Consideration on Durability of Resin Nets) During threshing work, the object to be treated in the handling chamber is rotated in a certain direction while being strongly pressed against the nets by the handling barrel. Of the lattice members that make up the mesh of
The horizontal lattice member group along the direction of the axis of rotation of the handling cylinder always receives the pressing force from the object to be treated and the frictional force in the direction of rotation of the handling cylinder. In this case, since the load acting on the horizontal lattice member is distributed to the vertical lattice member group intersecting with the horizontal lattice member, if the strength of the vertical lattice member is weak, the mesh is likely to be deformed or damaged.

By the way, it is desirable to increase the aperture ratio of the mesh as much as possible while making the mesh of a desired size in order to improve the leakage performance. For this purpose, the width of each lattice member should be reduced. Good. However, if the width of the lattice member is reduced in this way, the load during the threshing work cannot be endured as described above. It is also possible to increase the height of each lattice member by increasing the thickness of the net, but in this case, even though it is a resin, the material to be treated is likely to be clogged in the mesh, and in terms of leakage performance. It is desirable that the net thickness is small.

The present invention was not focused on such a situation, and by devising a mounting structure of the resin-made receiving net to be suitable for this, the above-mentioned mounting point and durability are improved. The purpose is to solve the problems in terms of the above and to enable practical use of the resin net.

[0008]

A characteristic configuration of the present invention for achieving the above object is to provide a horizontal lattice member group arranged in a direction along a rotation axis of a handling cylinder and a rotation axis of the handling cylinder. A mesh-like leaking lower surface formed by a group of vertical lattice members arranged in a direction orthogonal to each other, and a wide mounting frame portion located around the mesh-like leaking lower surface are integrally molded with a synthetic resin material. Configure the receiving network,
The frame portion of the receiving net is placed on a fixed frame body, and a stepped bolt having a head portion having a large diameter, an intermediate shaft portion having an intermediate diameter, and a screw portion having a small diameter is made to correspond to the shape of the stepped bolt. Insert the bolts into the bolt insertion holes of the frame and the frame, immerse the head of the stepped bolt so that it does not protrude from the surface of the net, and tighten the frame with the step of the intermediate shaft and the nut to make the net into the frame. It is configured to be fixed, and in the vertical lattice member group, a part of the vertical lattice members located in the middle in the axial direction is configured to be wider than the other, and this wide vertical lattice member is It is in the point that it is abuttingly supported by a reinforcing member arranged below.

[0009]

According to the structure of the present invention, the large-diameter head of the bolt that connects the receiving net to the frame is immersed in the bolt insertion hole and does not project to the surface of the receiving net. It does not catch on the head and stay. Also, since the bolt is a stepped bolt, even if it is strongly tightened into the frame, tightening against the receiving net is limited by the length of the intermediate shaft part, and it will be fixed with a constant tightening force, so excessive tightening Damage and breakage due to tightening torque can be prevented, premature rattling during use and damage caused by it can be eliminated, and bolt tightening operation can be performed easily without having to be careful when tightening too much.

Further, during the threshing operation, the horizontal lattice member of the receiving net receives a large force directed to the rotation of the handling cylinder as a load, and this is distributed to the vertical lattice member group. At this time, some of the vertical lattice members are wider than many other vertical lattice members, and thus strongly support the above-mentioned force directed in the rotating direction of the handling cylinder. Although it is possible to make all the vertical grid members the same wide width so as to withstand the load applied to the horizontal grid members, only some of the vertical grid members are made wide and many other vertical grid members are used as in the present invention. The smaller the width of the lattice member, the larger the aperture ratio of the entire mesh with the desired mesh.

Further, since a part of the wide vertical grid member is contacted and supported by the reinforcing member, it is possible that the middle portion of the receiving net is bent by a strong pressing force from the handling cylinder side acting on the receiving net during threshing work. The reinforcing member prevents the tension, and the tension acting on the peripheral frame portion is reduced.

[0012]

As described above, according to the present invention, although the tightening operation can be easily performed, the net can be connected by reasonably and appropriately tightened, and the opening ratio for leakage is reduced. It will be possible to withstand the threshing load without any problems, solve the problems of mounting the resin net and the problems of durability, and aim to put the resin net into practical use. I was able to.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 3, the handling cylinder 2 and the handling chamber A, which are driven and rotated around the axis P, so as to exert a handling action on the grain culm that is fed to the handling chamber A in a sideways posture by the feed chain 1.
At a lower position of the handling cylinder 2, the receiving net 3 curved and formed in an arc shape along the circumferential direction of the handling cylinder 2, and a swing sorting mechanism 4 for sorting a processed material from the handling chamber A by a swing motion, a swing sorting. Mechanism 4
Karato 5, which sends the sorting wind to the machine, the No. 1 screw 6 which collects the grains sorted by the swing sorting mechanism 4, the swing sorting mechanism 4
No. 2 screw 7 that collects No. 2 product sent from
Swallow reduction mechanism 8 for sending No. 2 from No. 2 screw 7 into the handling chamber, dust-exhaust fan 9 for sucking and discharging dust inside the device
Each of them is provided with a threshing device mounted on the combine.

As shown in FIGS. 1 and 2, in this threshing device, the receiving net 3 is manufactured by using an ultra high molecular weight polyethylene material. That is, the receiving net 3 includes a large number of vertical lattice members 3 a in a posture along the rotation direction of the handling cylinder 2 and a rotation axis P of the handling cylinder 2.
A large number of horizontal lattice members 3b arranged in parallel with the rectangular opening 3c
Has a leaky bottom surface 3S formed by forming a large number of
It is configured to have a wide frame portion 3F in the peripheral portion thereof. In this receiving net 3, a large number of bolt insertion holes 3d are formed in the frame 3F, and the bolts 10 are inserted into the holes 3d and fixed to the arc-shaped frame body 11 to handle the receiving net 3. It can be maintained in an arcuate state along the circumferential direction of the body 2.

The head of the bolt 10 is shaped like a dish, and the step portion 1 is provided between the shaft portion 10a and the screw portion 10b.
0c is formed, and the hole 3d is not enlarged because the receiving net 3 itself is not compressed by the abutment between the stepped portion 10c and the frame 11 even when strongly tightened.

Further, in the receiving net 3, a plurality of vertical grid members 3a located in the middle of the handling cylinder axis direction are formed to have a wide width, and the frame 11 side has the wide vertical length. The reinforcing member 12 having a width W ₁₂ narrower than the width W _{3 of the} lattice member 3A is adapted to contact and support the wide vertical lattice member 3A from the side opposite to the handling barrel.

In the claims of the utility model, reference numerals are given for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a lattice member and a reinforcing member.

FIG. 2 is a partially cutaway plan view of the receiving net.

[Fig. 3] Overall side view of the threshing device

[Explanation of symbols]

 2 Handle cylinder 3a Vertical lattice member 3A Wide vertical lattice member 3b Horizontal lattice member 3F Frame portion 10 Stepped bolt 10a Intermediate shaft portion 10b Screw portion 10c Step portion 10d Head portion 11 Frame body 12 Reinforcing member P Rotating shaft core of the handling barrel

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-254923 (JP, A) JP-A-63-109714 (JP, A) Actually opened 63-78550 (JP, U) Actually opened 56- 41556 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A horizontal lattice member (3b) group arranged in a direction along a rotation axis core (P) of a handling cylinder (2) and a direction orthogonal to the rotation axis center (P) of the handling cylinder (3). Vertical lattice member (3
a) a mesh-like leaking lower surface (3S) formed by the group and a wide mounting frame portion (3F) located around the mesh-like leaking lower surface (3S) are integrally molded with a synthetic resin material. Receiving network (3)
And a frame body (1) for fixing the frame portion (3F) in the receiving net (3).
1), the head (10d) has a large diameter, the intermediate shaft (1
0a) has a medium diameter and the threaded portion (10b) has a small diameter, and the stepped bolt (10) is made to correspond to the shape of the stepped bolt (10), and the bolts of the frame portion (3F) and the frame body (11). Insert it into the insertion hole and immerse the head (10d) of the stepped bolt (10) so that it does not protrude from the surface of the receiving net, and insert it into the intermediate shaft (1
0a) stepped portion (10c) and nut (13) are used to tighten the frame body (11) to fix the net (3) to the frame body (11). Of these, a part of the vertical grid member (3A) located in the middle in the direction of the axis (P) is made wider than the other, and the wide vertical grid member (3A) is formed.
Is supported in contact with a reinforcing member (12) arranged below the mesh-supporting structure of the threshing device.