JPH0719230Y2 - Threshing machine net - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to a net for a thresher mounted on a combine or a harvester.

2. Description of the Related Art Conventional techniques and problems to be solved Conventionally, as a net for a threshing machine, a crimp net a in which a steel wire having a predetermined wire diameter (about 2 mm) is woven into a lattice is generally used as shown in FIG. ing. In the case of a material (dry material) such as dry rice or wheat, this crimp net a does not easily cause clogging and has a good grain leakage rate, and untreated grains such as spikelets or shoot adhering grains. It exhibits good performance, such as relatively few occurrences, but in the case of wet material, lodging material or immature material that has a large amount of water and mud tends to adhere, branching or mud may enter the stitch of the steel wire. Clogging is likely to occur, and once clogging occurs in the receiving net, the singulation processing capacity decreases and not only the grain loss due to No. 3 scattering etc. increases but also the leakage of grains from the receiving net decreases. This will reduce the threshing efficiency.

Further, if the receiving net becomes clogged, the amount of unprocessed material in the handling room increases and the load on the handling room increases. Sometimes. Agricultural work these days is often done intensively on holidays, etc., due to the shortage of manpower by part-time farmers.
Harvesting work such as rice also tends to be carried out even when it is wet with some rain or morning dew, and lodging materials that are prone to wind and rain immediately before harvesting have a high rate of adhesion of mud and water, which makes them suitable for wet materials. In reality, it is desired to develop a high all-weather receiving network.

In order to solve the problems, the present invention has a plurality of bar-shaped rollers having a star-shaped cross section, which are rotatably supported at appropriate intervals, in close proximity to each other on the rotation locus of the handle teeth and parallel to the handle cylinder. The above problems are caused by interlocking each roller with the power transmission system of the machine body and installing a plurality of wire rods in the longitudinal direction of the roller along the rotation locus of the tooth on the inner side of the roller. It is to try to eliminate the points.

Action Since the roller is forcibly rotated, branch splinters, debris, mud, etc. are quickly leaked from the leak port formed between the rollers. In addition, long straws and relatively large debris stagnate in the treatment chamber while lying on the wire provided along the rotation path of the treatment tooth, so that they do not leak early and have sufficient treatment action by the treatment tooth. While being received, the handling chamber is smoothly and reliably transferred from the starting end side to the terminating end side. Further, untreated particles such as cuttings and particles attached to branch shoots that are stagnant in the handling chamber are enhanced in the shedding effect due to the difference in peripheral speed between the handling tooth and the roller, so that single graining is further promoted.

Embodiments The structure of the present invention will be described with reference to an embodiment shown in the drawings. 1 is a front plate 2 on the grain culm supply side and a rear plate 3 on the grain culm discharge side.
In a handling room of an upper handling type threshing machine formed between them, a handling barrel 5 having handling teeth 4 planted on the outer periphery is rotatably mounted on the inside of the handling chamber 1. 5'is a handling barrel shaft, 6 is a handling room net, and 7 is a feed chain. A processing cylinder 8 is located below the feed chain 7 and is rotatably mounted in parallel with the handling cylinder 5 from one end of the handling chamber 1 to the rear end of the body of the threshing machine A. b
The corresponding portion is constituted by a spiral body 8a, and a large number of solid teeth 8b are fixedly provided on the outer peripheral surface of the succeeding portion so as to give a hitting action and a feeding action to the workpiece. 9 '
Is a processing barrel, 9 is a processing room, 10 is a processing room receiving net, 11 is a handling room 1
And the swing selection body of the selection unit B arranged below the processing chamber 9. The handling cylinder shaft 5'and the processing cylinder shaft 9'include a transmission case 12, a square shaft 13a, and a square pipe slidably fitted to the square shaft 13a.
Rolling connection is made via a universal joint shaft 13 composed of 13b. 14 is a transmission system from the engine E, which includes a handling cylinder 5 and a processing cylinder 8.
Are driven in conjunction with the transmission system 14.

By the way, the handling chamber receiving net 6 is composed of a plurality of rollers that are forcibly rotated, and its specific configuration is as follows. That is, each roller 15 is formed in a rod shape having a star-shaped cross section by radially projecting ridges 15a on the outer periphery of, for example, a synthetic resin, and is formed on an iron-made net frame 16 which is framed in an arc shape in a front view. On the other hand, it is rotatably supported at a proper distance outside the handle cylinder 5 and parallel to the handle shaft 5 ', so as to be closely opposed to the rotation trajectory of the handle teeth 4. In the illustrated example, a pair of rollers are closely supported and axially supported, and a leakage port h is formed between the pair of rollers 15 and 15. Incidentally, the net frame
One roller 15 is arranged on the end side of 16 due to the mounting space.

S is a wire rod such as a steel wire which is positioned orthogonal to each roller 15 on the inner peripheral surface side of the handling chamber receiving net 6 and is installed between the frame bodies 16a and 16b. The wire rod S is a ridge 15a of the roller 16. With respect to the predetermined longitudinal distance w
The space portion defined by the rod-shaped roller 15 and the wire rod S is inserted into the circumferential groove 15b provided for each of them, and serves as the mesh 17 of the handling chamber receiving net 6. The handling room receiving net 6 is configured to be attachable to and detachable from the thresher A by removing a lock hook or the like described later. The wire S is the groove 15 of the roller 15.
When it is completely immersed in b, the resistance to the processed material becomes larger and the shaving / single-graining action is better performed. Further, the wire rod S may be formed in an uneven shape such as a corrugated shape in order to change the processing action.

Each of the rollers 15 is detachably interlocked with the transmission system 14 of the machine body. The rotation directions of the pair of rollers 15 are opposite to each other, and the rollers 15 are forcibly rotated downward (leakage direction) at the leakage port h side. Is configured to.

That is, the large gear 18 is fixed to the inside of each one-side protruding shaft (projection shaft on the threshing entrance side in the illustrated example) 15 'of the pair of rollers 15 and 15, and the small gear 19 is fixed to the outside thereof to form a pair of rollers 15. , 15 large gears 1
8 rollers are meshed with each other, and the small gear 19 is meshed with the small gears 19 of the other pair of rollers 15 and 15 adjacent to each other with the intermediate gear 19a interposed therebetween so that the rollers are interlocked with each other and the driving force of the roller 15 is increased. The processing cylinder shaft 9'is introduced from the processing cylinder shaft 9'through a gear box 20 penetrating the processing cylinder shaft 9 ', and the torque of the processing cylinder shaft 9'is a reduction gear consisting of a worm wheel and a worm gear mounted on the gear box 20. 21, bevel gear 22, intermediate gears 23, 23a
After being transmitted to the input gear 24 which is fixed to the other side protruding shaft 15'a of the roller 15 on the side of the handle mouth, via the gear group 18, 19, 19a
Each roller 15 is forcibly driven in the direction of the arrow in FIGS.

Incidentally, the gear group 18, 19, 19a is a frame body 16c formed in a U-shaped cross section, and the input gear 24 is also a U-shaped frame body 16d.
, And the frame bodies 16c, 16d are installed in the respective gears 18, 19, 1
Not only does it serve as a gear case for accommodating and protecting 9a, 24, but also serves to strengthen the entire receiving net 6.

Now, the gear box 20 is supported by a processing cylinder outer case 26 that opens and closes sideways integrally with the processing cylinder 8 around a support shaft 25. When the processing cylinder outer case 26 is opened, the gear box 20 The intermediate gear is pivotally displaced outward integrally with the processing cylinder 8.
Since 23a separates from the input gear 24 on the side of the handling room receiving net 6, the connection between each roller 15 and the transmission system 14 of the machine is immediately released,
When the processing cylinder outer case 26 is closed, the intermediate gear 23a is docked to the input gear 24 with one touch. 27 and 28 are hooks for locking the case outer case 26,
The hooks 27, 28 are locked to pins 29, 30 projecting toward the machine body to lock the outer case 26 of the processing cylinder in a closed state, and the hook 31 for fixing the net is a pin integrated with the net 6 for the chamber. It is locked to 32 to fix the handling room receiving net 6 between the support fittings 33 and 34, and the gear box 2
The hook 35 pivotally attached to 0 is locked to the pin 36 attached to the receiving net frame body 16 so that the receiving net 6 can be reliably locked to the threshing machine A. Reference numeral 37 is a grain collecting plate that is attached to the processing chamber 9 below the starting end side of the feed chain 7 so as to be opened and closed sideways. The grain collecting plate 37 is a clam grain that drops when the grain chain is conveyed by the feed chain 7. Swinging and scattering particles
It serves as a cover for the sorting section B and the universal joint shaft 13 as well as for guiding and collecting upwards, and a protrusion 37 ′ fixed to one side thereof is locked by a stopper (not shown) fixed to the machine body to be in a closed state. It is designed to hold. 38 is a crimp net.

In the above configuration, the power of the engine E is the power transmission system 14
Is transmitted to the handling barrel shaft 5'through the handle barrel 5'and the handling barrel 5 is driven, and from the handling barrel shaft 5'to the transmission case 12 and the universal joint shaft 13
Is transmitted to the processing cylinder shaft 9'and the processing cylinder 8 is driven.
The torque of the processing cylinder shaft 9'is reduced by the reduction gear 21 provided in the gear box 20, and then the bevel gears 22, 22, the intermediate gear 23,
It is transmitted to the input gear 24 on the side of the handling room receiving net 6 via 23a,
Since the bar-shaped roller 15 on the side of the handle is driven, each roller 15 is moved to the second position by the mesh rotation of the gear groups 18, 19, 19a in the frame 16c.
It is forcibly rotated in the direction of the arrow in FIGS. For this reason, branch stems and debris generated in the handling room 1 and mud that has entered the handling room 1 together with the culm are quickly leaked to the sorting section B side from the leak outlet h formed between the rollers 15, 15. Since it is lowered, it is possible to prevent the occurrence of clogging even with a wet material that easily clogs. As a result, it is possible to prevent unnecessary waste from being carried around in the handling room 1, so that the threshing load is reduced as much as possible.
A large amount of processing can be performed with a small amount of power, and the threshing capacity per horsepower can be increased.

On the other hand, long straws, relatively large debris, etc. stagnate inside the handling chamber 1 in a state of lying on the wire S provided along the rotation trajectory of the handling tooth 4, so that they do not leak as they are Since the treatment chamber 1 is reliably transferred from the starting end side to the terminating end side while receiving a sufficient processing action, the burden on the sorting section B due to leakage of long straws can be minimized. In addition, unprocessed particles such as spikes and branch adhering particles that are stagnant in the handling chamber 1 are treated teeth 4 and roller 15.
Since the shedding effect is enhanced by the difference in peripheral speed, the single grain formation is further accelerated.

It should be noted that the U-shaped frame body 16c in which the gear groups 18, 19, 19a are installed is located on the starting end side of the handling chamber, but this portion corresponds to the straightening tooth 4'which does almost no shedding action. It does not hinder the shedding action.

Effect of the Invention As described above, the thresher receiving net according to the present invention rotates a plurality of bar-shaped rollers having a star-shaped section in parallel with each other in close proximity to the rotation path of the handling teeth and parallel to the handling cylinder. Freely supporting the shaft, linking each roller interlockingly with the transmission system of the machine body, and installing a plurality of wire rods along the rotation path of the handle teeth on the inner side of the roller in the longitudinal direction of the roller at appropriate intervals. Therefore, not only is it possible to prevent clogging by forcibly rotating the rollers to enable large-scale processing, but also wire rods that run along the rotation path of the handling teeth allow leakage of long straws and large debris. It is possible to prevent the untreated material from being caught in the handling chamber by the handling teeth and to smoothly transfer the unprocessed material to the handling chamber, and it is possible to further enhance the shedding action due to the difference in the peripheral speed between the handling teeth and the roller, and the wettability adaptability. Can be greatly improved.

[Brief description of drawings]

The drawings show an embodiment of a net for a thresher according to the present invention. Fig. 1 is a side view of the main part, Fig. 2 is a front view of the main part, and Fig. 3 is a plan view of the net. FIG. 4 is a perspective view showing an internal structure of the threshing machine with the processing case outer case and the grain collecting plate in an open state;
FIG. 6 is an explanatory view of the operation of the main part, and FIG. 6 is a sectional view of a conventional thresher equipped with a net. In the figure, 1 is a handling room, 4 ... Gears, 5 ... Handling barrel, 6 ... Receiving net, 14 ... Transmission system, 15 ... Roller, A ... Threshing machine, S is a wire rod.

Claims (1)

[Scope of utility model registration request] 1. A plurality of rod-shaped rollers, each having a star-shaped cross-section, are rotatably supported at appropriate intervals in parallel with each other and in opposition to the rotation locus of the handling tooth, and each roller is a transmission system of the machine body. The threshing net of the threshing machine is characterized in that a plurality of wire rods are installed along the rotation locus of the handling teeth on the inner side of the handling chamber in the longitudinal direction of the roller at appropriate intervals while being interlocked and connected.