JPH0453226Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is a dispensing device for a spreader that is attached to the rear of a tractor and driven by the PTO shaft of the tractor to spread fertilizers and chemicals onto the field. It is related to.

(b) Prior Art Conventionally, regarding the structure of a spreader, a technology such as Utility Model Application No. 130277/1984 has been filed by the same applicant.

(c) Problems to be solved by the invention This invention supports the agitator by spreading fertilizers and chemicals over a long period of time in the spreader, and then leaving it in an insufficiently cleaned state. Corrosion and rust due to fertilizers and chemicals occur on the agitator cylinder shaft and agitator drive shaft, and due to this corrosion and rust, the fitting part of the agitator drive shaft and agitator cylinder shaft adheres, resulting in repair and inspection.・When cleaning, there was a problem in that these could not be attached or detached.

When this situation occurred, even if the bottom of the hopper became clogged, the agitator could not be removed and had to be cut off from the shaft, increasing repair costs.

In this invention, resin bushings that do not cause fertilizer burning are inserted into the agitator drive shaft 4 and agitator cylinder shaft 8, which are the parts where fertilizer burning is most noticeable and where problems are most likely to occur, so that the fertilizer can be easily burned at any time. It is designed so that it can be removed.

(d) Means for solving the problems The purpose of the present invention is as described above, and next, the configuration for achieving the purpose will be explained.

A worm gear case 1 is arranged at the lower part of the hopper 3, an agitator drive shaft 4 is protruded from the worm gear case 1, the agitator drive shaft 4 is fitted into an agitator cylinder shaft 8, and an agitator 9 is provided on the outer periphery of the agitator cylinder shaft 8. In the dispensing device of the spreader that rotates the agitator drive shaft 4
A resin bushing 7 is interposed between the agitator cylinder shaft 8 and the agitator cylinder shaft 8, and the two are fixed together.

(e) Embodiments and operations The purpose of the present invention is as described above, and next, the structure and operations of the embodiments shown in the attached drawings will be explained.

Figure 1 is a side view of the spreader of the present invention, Figure 2 is a front view, Figure 3 is an enlarged side view of the spreader with the lower section of the hopper 3 taken, and the fourth right is a front sectional view. 5 is an exploded view of the agitator cylinder shaft 8 and the outer end support shaft 6, and FIG. 6 is a front sectional view of the agitator 9 and the agitator cylinder shaft 8 when they are removed from the hopper 3 as a whole.

The overall configuration of the spreader will be explained based on the drawings of FIGS. 1 to 4.

Since the spreader is attached to a three-point link type work implement mounting device at the rear of the tractor, a top link mast 15 and a lower link pivot pin 13 are provided on the front side.

A shutter lever 20 extends to the side of the toplink mast 15 so that an operator riding on the tractor can open and close the lower shutter 14 of the hopper 3.

A lever guide 19 is disposed at a portion of the shutter lever 20 that is rotated back and forth.

It is supported by a column 18 and a top link mast 15 that project upward from the hopper 3 and the support body 17. A pin bracket 16 projects from the middle of the top mast 15, and a lower link pivot pin is attached to the pin bracket 16. 13 is fixed.

The lower shutter 14 is configured in a similar arcuate shape along the arcuate lower surface of the hopper 3, and is supported so as to be slidable along the lower surface of the hopper 3. By sliding the lower shutter 14 with the shutter lever 20, the hopper 3
A fertilizer fall port 3a provided on the arc-shaped lower surface of the
When the opening 14a of the lower shutter 14 is aligned with the opening 14a of the lower shutter 14, the fertilizer in the hopper 3 is configured to fall onto the field.

A rotating part of an agitator 9 is provided inside the hopper 3, and no partition is provided between the agitator 9 and the upper part of the hopper 3. And at the bottom center of Hopper 3,
A worm gear case 1 is arranged, and an input shaft 2 of the worm gear case 1 protrudes outward from the front of the hopper 3. Rotation of the PTO shaft of the tractor is transmitted to the input shaft 2 via a universal joint. It is being done.

The approximately 540 rotations of the PTO shaft are reduced to approximately 30 rotations within the worm gear case 1, and the rotation direction of the input shaft 2 is changed by the worm gear, and the agitator drive shaft 4 rotates the shaft facing the horizontally long hopper 3. It is taken out as

An agitator cylinder shaft 8 is connected to the agitator drive shaft 4.
The outer end of the agitator cylinder shaft 8 is fitted onto the outer periphery of the outer end support shaft 6 which protrudes into the hopper 3 from the bearing case 5.

Therefore, the agitator drive shaft 4 is fitted into the inner end of the agitator cylinder shaft 8, and the outer end support shaft 6 is fitted into the outer end, so that the agitator cylinder shaft 8 is supported at both ends. An agitator 9 is fixed to the outer periphery of the agitator cylinder shaft 8.

The purpose of the agitator 9 is to agitate the fertilizer by rotating, breaking the bridging condition and causing it to fall, so two discs are spot welded and a part of the disc is bent outward. , which constitutes the scraping blade.

Since the agitator 9 is composed of a disk and is weak in strength, a connecting rod 10 that connects the plurality of agitators 9 for reinforcement is fixedly arranged at a 180 degree position. has been done.

In the above configuration, the present invention is designed to prevent adhesion caused by fertilizer burning between the agitator cylindrical shaft 8, agitator drive shaft 4, and outer end support shaft 6 at the fitting portion between them. A bushing 7 made of resin that is resistant to chemical substances is inserted into the bushing.

Speaking of the bush of a normal bearing part, the usual technique is to construct a bearing device by fixing the bush and rotating the shaft inside the bush. The bush 7 is configured so that it rotates integrally with the agitator drive shaft 4, the outer end support shaft 6, and the agitator cylinder shaft 8 fitted therein, without the action of a bearing.
This structure was designed to eliminate the inability to escape due to corrosion.

Therefore, the outer end support shaft 6 is provided with a pin hole 6a, the resin bush 7 is also provided with a pin hole 7a, and the agitator cylinder shaft is similarly provided with a pin hole 8a.

The locking pin 1 is inserted into the three pin holes 6a, 7a, 8a.
1, and then the pine needle pin 12 is inserted into the locking pin 11 so that the locking pin 11 does not come off.

Although FIG. 5 shows the relationship between the outer end support shaft 6 and the agitator cylinder shaft 8, the structure between the agitator drive shaft 4 and the agitator cylinder shaft 8 is also similar.

In FIG. 6, the size of the hole in the bearing case 5 provided in the side wall of the hopper 3 is clearly illustrated. That is, a large diameter bearing portion is configured inward from the mounting flange of the bearing case 5,
A hole sized to allow the large diameter portion to be inserted,
It is opened in the side wall of the hopper 3.

Therefore, it goes without saying that the agitator cylinder shaft 8 can be fitted into the hole.

(f) Effect of the invention Next, referring to FIG. 6, a structure for removing the agitator cylinder shaft 8 and the agitator 9 integrally from the hopper 3 will be described.

As shown in FIG. 6, the bearing case 5 is first removed from the side wall of the hopper 3. The bearing case 5 is fitted into a large diameter hole opened in the side wall of the hopper 3 from the outside of the hopper 3 and fixed with bolts. The diameter of the hole is large enough for the agitator cylinder shaft 8 to pass through. However, agitator 9
The diameter is too small for the outer diameter of the

Therefore, before removing the bearing case 5, first remove the locking pin 11 from the pin hole 6a of the outer end support shaft 6, and also remove the locking pin 11 from the agitator drive shaft 4.

In this state, when the bearing case 5 and the outer end support shaft 6 are removed as a unit from the side wall of the hopper 3 and pulled outward, the agitator cylinder shaft 8 becomes detached from the outer end support shaft 6. However, if the agitator drive shaft 4 and the agitator cylinder shaft 8 are still in the fitted state, as shown in FIG. It protrudes outward from a large-diameter hole in the side wall of the agitator cylinder shaft 8 and releases the fitted state between the inside of the agitator cylinder shaft 8 and the agitator drive shaft 4 .

Next, by lifting the agitator cylinder shaft 8 on the side of the agitator drive shaft 4 diagonally upward,
The part of the agitator cylinder shaft 8 fitted into the large diameter hole after removing the bearing case 5 can also be pulled out upward.

(g) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, the dispensing device for distributing fertilizers and chemicals is particularly susceptible to corrosion by the fertilizers and chemicals themselves, and due to this corrosion, the agitator drive shaft 4, agitator cylinder shaft 8, etc. become rusted and cannot be removed. This problem does not occur in normal bearings, but only in fertilizer spreaders.

In the present invention, in order to solve the problem of seizure corrosion between the agitator drive shaft 4 and the agitator cylinder shaft 8, the agitator drive shaft 4 and the agitator cylinder shaft 8, and the outer end support shaft 6 and the agitator cylinder shaft 8 are By inserting the resin bushing 7 between them, the resin bushing 7 is prevented from corroding or rusting.

Second, even if fertilizer clogs occur between the lower shutter 14 under the agitator 9,
Since the agitator 9 can be easily removed from the agitator cylinder shaft 8, blockages can be easily removed.

[Brief explanation of the drawing]

Fig. 1 is a side view of the spreader of the present invention, Fig. 2 is a front view, Fig. 3 is an enlarged side view of the spreader with the lower section of the hopper 3 taken, and Fig. 4 is a front sectional view. FIG. 5 is an exploded view of the agitator cylinder shaft 8 and the outer end support shaft 6, and FIG. 6 is a front sectional view with the agitator 9 and the agitator cylinder shaft 8 removed. 1... Worm gear case, 3... Hopper,
4... Agitator drive shaft, 5... Bearing case,
6... Outer end support shaft, 7... Resin bushing, 8
...Agitator cylinder shaft.

Claims (1)

[Scope of utility model registration request] A worm gear case 1 is arranged at the lower part of the hopper 3, an agitator drive shaft 4 is protruded from the worm gear case 1, the agitator drive shaft 4 is fitted into an agitator cylinder shaft 8, and an agitator 9 is provided on the outer periphery of the agitator cylinder shaft 8. In the dispensing device of the spreader that rotates the agitator drive shaft 4
A dispensing device for a spreader, characterized in that a resin bushing 7 is interposed between the and agitator cylinder shaft 8, and the two are fixed together.