JPH084843Y2 - Grain tank discharge transmission - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a discharge transmission device for a grain tank that is used to lift the grain filled in the grain tank and load it on a carrier such as a carrier.

(B) Conventional technology Conventionally, a swirl discharge cylinder that is upright from the discharge portion of a grain tank is continuously provided on the upper part of the discharge discharge cylinder, and the discharge discharge cylinder side is used as a drive source and a swirl discharge cylinder via a chain. There is already known an exhaust transmission device for a grain tank which is adapted to be transmitted to.

(C) Problems to be Solved by the Invention In the above-mentioned known grain tank discharge transmission device, since the load when the swivel discharge cylinder is swiveled is relatively small, the strength of the transmission device itself is not so required.

However, if the revolving discharge cylinder comes into contact with an obstacle due to an erroneous operation during a driving operation, an excessive impact load is generated, which may damage the transmission device.

If the strength of the transmission is increased in order to solve such a problem, the weight is increased and the cost is significantly increased.

(D) Means for Solving the Problems In the present invention, a swirl discharge cylinder that is undulated is continuously provided on the upper part of the discharge discharge cylinder that stands up from the discharge portion of the grain tank, and the discharge discharge cylinder side is the drive source. As a grain tank that is adapted to be transmitted to the swirl discharge tube via the chain, a plurality of passive pins that protrude between the rollers of the chain at wide intervals are provided on the outer periphery of the passive ring of the swirl discharge tube. , The top of which is projected so as to be approximately the same height as the center diameter of the roller,
When the tip end portion of the passive pin is formed into an arcuate surface having substantially the same shape as the roller and the tensioning means is attached to the chain, when the swiveling discharge cylinder collides with an obstacle and an excessive load is shocked. The chain roller of the transmission overcomes the above-mentioned problem by overcoming the passive pin.

(E) Action When pumping and discharging the grains in the grain tank, swivel the swivel discharge cylinder near the vehicle or other device that stores the discharged grain to store the discharge port on a loading platform, etc. When the discharge spiral of the grain tank discharge device and the discharge discharge device of the grain tank is driven, the grain in the grain tank is discharged and discharged into the storage part. When the grain lifting / discharging is completed, the swirling / discharging cylinder is returned and swirled for storage.

When the swivel discharge cylinder collides with an obstacle by an erroneous operation, an excessive load is applied to the chain that is being transmitted to the swirl discharge cylinder. At that time, since the chain is engaged with only a small number of passive pins, the chain of the chain is strongly pressed against the arcuate surface of the passive pin, and the top of the passive pin is connected to the passive wheel. Since the roller is formed to have a height substantially equal to the center diameter of the roller, the roller rides on the arcuate surface of the passive pin and sequentially comes off, so that the transmission is not damaged in the end.

(F) Example An example of a grain tank of a combine shown in the drawings will be described with reference to the drawings. 1 is a grain tank provided with a threshing device on a machine base having a traveling device, and an upper portion of the grain tank is threshed. Like the conventional one, it is connected to the fried food container of the apparatus, and a discharge spiral and a shutter are provided at the bottom portion, and a discharge and discharge container 2 is erected upright in the vicinity of the discharge port.

Further, a receiving cylinder 3 is rotatably fitted and supported on the upper part of the lifting and discharging cylinder 2, and the base of the rotating and discharging cylinder 5 is undulated about a substantially horizontal shaft 6 of the receiving cylinder 3. The discharge spiral shaft in the swivel discharge cylinder 5 is driven by the lift spiral shaft 7 in the lift discharge cylinder 2 via the bevel gear.

A drive device 8 is provided outside the upper portion of the lifting and discharging cylinder 2.
This drive device 8 is equipped with a first shaft 11 which is interlockingly connected to a motor 9 and has a small gear 10 engraved on its peripheral surface, a large gear 12 meshing with the small gear 10 and a drive sprocket 13. The passive wheel body 15 is integrally formed on the outer circumference of the receiving cylinder 3, and the distal end portion of the passive wheel body 15 is widely spaced from the outer circumference of the passive wheel body 15. Four passive pins 16 formed on an arcuate surface having substantially the same cross-sectional shape as the roller 17a protruding between the rollers 17a of the chain 17 are screwed together and fastened with a nut 19, and these passive pins 16 and In the vicinity of the drive sprocket 13 of the chain 17 that is wound around the drive sprocket 13, one end is rotatably supported by a fulcrum pin 18, and the other end is a tension formed by a V-shaped elastic plate connected by a tension spring 20. The means 21 is pressed from the outside.

Further, the tip end portions of the passive pins 16 ... Extend into a position having a height substantially equal to the center diameter of the roller 17a of the chain 17 wound around the passive wheel body.

In the grain tank 1 described above, when the grain is discharged,
Move the combine near the carrier who parks it on the road,
When the turning discharge cylinder 5 is tilted upward by the hydraulic cylinder 22 and the motor 9 is started by the switch, large and small gears 10,1
2, the chain 17 rotates via the drive sprocket 13 and
As a result, the receiving cylinder 3 rotates, so that the discharge port of the turning discharge cylinder 5 faces the loading platform of the carrier.

In this state, when the clutch lever 23a near the operating part is rotated to the on position, the tension clutch 23 tensions the transmission belt 24, so that the shaft 25 of the discharge spiral at the bottom of the grain tank 1 rotates and interlocks with it. Then, the discharge spiral in the lifting spiral shaft 7 and the swirl discharge cylinder 5 is rotated. At this time, when the shutter of the grain tank 1 is opened, the grain is discharged from the grain tank 1 and is then pumped and put into the cargo bed.

When the grain discharge is completed, the swivel discharge cylinder 5 is swung back, lowered by the hydraulic cylinder 22, and stored at a predetermined position.

When the swivel discharge cylinder 5 is swung,
When the swivel discharge cylinder 5 collides with an obstacle due to an erroneous operation, a large tension is applied to the chain 17, so that the chain 17 extends against the tensioning means 21 and its roller 17a has at most 3
The individual members are engaged with the passive pin 16 and are strongly pressed against the arcuate surface of the passive pin 16 ... And the roller 17a has a height substantially equal to the roller center diameter as shown in FIG. 5 (a). The rider smoothly rides along the arcuate surface of the top of the passive pin 16 that rushes in and crosses over, and the next roller 17a also catches on the passive pin 16 and gradually slides over without stopping, so there is no great resistance. The power is cut off by getting over the vehicle, and thus the drive device 8 and the like can be accurately prevented from being damaged.

At this time, the chain 17 engages the passive pin 16 whose top has an arcuate surface of substantially the same shape as the roller 17a and has a height approximately equal to the center diameter thereof, and drives the swivel discharge cylinder 5 accurately. However, when excessive tension (overload) is generated, the power can be accurately cut off by the predetermined load without largely changing the power cutoff load, and the return transmission can be performed after the overload is eliminated.

At this time, if the teeth of the drive sprocket 13 are lowered as shown by the dotted lines in FIG. 1, chain jumps also occur in this portion, and safety can be further improved.

(G) Effect of the device Since the device of the present invention is configured as described above, when the grain is discharged,
When the swivel discharge cylinder 5 collides with an obstacle due to an erroneous operation or the like and excessive tension is applied to the chain 17, the rollers 17a of the chain 17 have a small number of the tops 16a of the passive pins 16 and the center diameter of the roller. By projecting so as to have the same height, and by forming the tip end portion of the passive pin 16 into an arcuate surface having substantially the same shape as the roller 17a, a large impact is generated along the arcuate surface of the passive pin 16. Since the power can be accurately cut off by a predetermined load without significantly changing the power cut-off load without causing a significant change in the power cut-off load, the strength of the transmission device or the like for turning the swivel discharge cylinder 5 can be reduced. Also, it can be surely prevented from being damaged.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 (a) is a plan view of a drive device for a swing discharge cylinder, FIG. 1 (b) is a side view of a grain discharge clutch, and FIG. Same as above, vertical sectional view, FIG. 3 is a plan view of a part of the grain tank and the lifting and discharging device,
The figure is a side view of the same, and FIGS. 5 (a) and 5 (b) are plan views showing the operation. 1 ... grain tank, 2 ... lifting and discharging cylinder, 5 ... swirl discharging cylinder, 8 ... driving device, 15 ... passive wheel, 16 ... passive pin, 17 ... chain, 17a ... roller

Claims (1)

[Scope of utility model registration request] Claims: 1. A swirl discharge tube 5 which is erected from the discharge section of the grain tank 1 is connected to the upper portion of a discharge discharge tube 2 standing upright, and the discharge discharge tube 2 side is used as a drive source via a chain 17. In the grain tank 1 that is adapted to be transmitted to the swirl discharge cylinder 5, a plurality of passive pins projecting between the rollers 17a of the chain 17 at wide intervals on the outer periphery of the passive wheel body 15 of the swirl discharge cylinder 5. 16 is protruded so that the top portion 16a thereof has substantially the same height as the center diameter of the roller, and the tip portion of the passive pin 16 is formed into an arcuate surface having substantially the same shape as the roller 17a. A drainage transmission device for a grain tank, characterized in that a tensioning means (21) is attached to the.