JPH0444214Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a self-propelled granule spreader, and more specifically, to a jet tube angle adjustment device for a self-propelled granule spreader that spreads granular fertilizers and chemicals onto fields.

[Conventional technology]

Self-propelled granule spreaders are used to spread granular fertilizers and chemicals on fields, and are equipped with a blower driven by an engine on a self-propelled body powered by engine output. The granules in the granule tank are sprayed out of the jet pipe using forced air, and the jet pipe is appropriately tilted in a vertical plane so that the spray area can be selected. There is a known device that allows the operator to operate the handle. As a representative example, Publication No. 45896/1983 can be mentioned.

[Problem that the invention attempts to solve]

The above-mentioned self-propelled granule spreader is a self-propelled granule spreader, but once the jet pipe is oriented in a certain direction, the direction can be selected arbitrarily, but the jetting is suppressed against the horizontal surface. The angle is constant and the ejecting distance of the granules does not change, and as long as the forced air from the blower is constant, the spraying distance that the granules reach from the spreader is constant and band-like. Therefore, there have been problems such as difficulty in uniformly dispersing the granules depending on the type of granules (size of the granules), the weather conditions at the time of dispersion, and the size of the field. Therefore, the object of this invention is to provide a spreader that can not only arbitrarily select the ejection suppression angle of the granules but also be able to uniformly spread the particles over the entire spraying area.

[Means to solve the problem]

Therefore, in order to achieve the above-mentioned purpose, this invention was developed by creating a connecting rod that converts the rotation of the wheels of the car body into reciprocating motion, and a swing arm that is connected to the end of this connecting rod and is allowed to rotate and swing. The base end of the swing arm is fixed in the swinging direction, and the swing arm is supported by the vehicle body.The swing arm has a swing arm whose base end is fixed in the swing direction and is supported by the vehicle body. The swing arm includes a pipe support arm and a jet pipe supported by the jet pipe support arm, and the swing arm has a variable effective length that extends perpendicularly to the swing support rod, and The present invention is characterized in that the swing angle of the swing support rod can be adjusted by adjustment.

【Example】

Embodiments of this invention will be described below with reference to the attached drawings. In these figures, reference numeral 11 indicates a vehicle body, in which two wheels 12 are arranged in the width direction, and a transmission 12B for transmitting power is provided at the center of the axle 12A.
Grip portions 13A of two handles 13 are protruded from the rear end portion of the handle 13 in the direction of travel, so that a worker who follows the vehicle while running can grip the grip portions 13A of the handle 13. A driving engine 14 is mounted on the vehicle body 11 between the handlebars 13, and its output is transmitted to the connecting pipe 1.
The power is supplied to the transmission 12B by a transmission shaft (not shown) in 4A to drive the wheels 12. An extension frame 15 is provided on the front part of the vehicle body 11, in other words, on the side opposite to the steering wheel.Auxiliary wheels 15A are provided on the lower side of the extension frame 15, and an engine 16 is provided on the extension frame 15. A driven blower 16 is mounted. A duct 16B extends from the blower 16A toward the self-propelled vehicle body 11 and is connected to the jet pipe 16Y via a flexible duct 16X. Furthermore, a granule tank 17 is mounted on the vehicle body 11 adjacent to the blower 16A for filling and accommodating granules such as fertilizers and chemicals.
The granules can be dropped into the communication pipe 17B through the pipe. This communication pipe 17B is equipped with an opening/closing mechanism 20 that controls opening and closing of the pipe, and the lower end of the communication pipe 17B communicates with the duct 16B. An operating grip 18A for the recoil starter operating string 18 of the engine 16 is arranged near the grip portion 13A of the handle 13, and an operating lever 22 for operating the operating rod 21 of the opening/closing mechanism 20 is arranged.
is located. A jet pipe 16 is provided at the end of the axle 12A.
A crank arm 31 is provided as a drive source for swinging the Y. A connecting rod 32 is connected to this crank arm 31 via a universal joint 31A, and the end of this connecting rod 32 is connected to a universal joint 32A.
It is connected to the end of the swing arm 33 via. The swing arm 33 is attached to one end of a swing support rod 34 extending from the center of the vehicle body 11 along the side surface to near the jet pipe 16Y.
A and 33B are connected at the end by a pin 33X, and the end of the connecting rod 32 is connected to this part. Of the arms 33A and 33B, the boss portion 33A' of the arm 33A is fixed to the swing support rod 34, and the boss portion 33B' of the arm 33B is slidable relative to the swing support rod 34. Therefore, the swing arm 33 is fixed to the swing support rod 34 in the swing direction. Furthermore, arms 33A, 33
A female threaded portion 33Y and an idling shaft support 33Y' are attached to B, respectively, and a threaded rod 35 is screwed into this female threaded portion 33Y, and the end of the threaded rod 35 is oscillated via a connecting rod 35A that is bent in the middle. It is connected to a crank handle 35B that serves as a moving angle adjustment handle. Furthermore, a base 36A of a jet tube support arm 36 is fixed to the other end of the swing support rod 34, and this jet tube support arm 36 supports the jet tube 16Y via suspension rods 36B and 36B'. ing. Both ends of each of the suspension rods 36B, 36B' are pivotally supported by the jet tube support arm 36 and the jet tube 16Y, and therefore, the suspension rods 36B, 36B' are
It can swing laterally with respect to the direction of travel of the vehicle body. By providing it in this way, the jet pipe 16Y is
As shown in FIG. 2, the flexible duct 16X can be swung around an imaginary line P. The connecting rod 32 has threaded portions 32X at both ends.
32Y, and the actual length can be selected by adjusting the amount of screwing into the universal joints 31A and 32A with a nut 32Z, and the inclination of the swinging center line of the swinging support rod 34 is determined. The spreader of the present invention has two engines.
4 and 16 are provided, but it is also possible to use this as one engine to transmit power as appropriate. Next, a description will be given of the spraying operation using the self-propelled granule spreader according to this invention. First, engine 1
4 and 16 are started to prepare for running and to prepare the blower 16A for operation.Furthermore, the opening degree is determined in relation to the granules to be sprayed by adjusting the opening and closing mechanism 20, and the blower 16Y is opened in the field. The amount to be sprayed is determined. Traveling in the field is performed by driving the wheels 12 with the output of the engine 14, and the operator grasps the grip portion 13A of the handle 13 and performs steering operations while walking along the wheel 12.
When the connecting rod 32 travels and rotates, the crank arm 31 performs a crank motion, causing the connecting rod 32 to move linearly in the length direction, and the end of the connecting rod 32 connects to the universal joint 32.
Since it is connected to the swing arm 33 formed by arms 33A and 33B via A, the swing arm 33 is caused to swing in a vertical plane.
Boss portion 33 of arm 33A of swing arm 33
Since A' is fixed to the swinging support rod 34, the swinging movement of the swing arm 33 results in the rotational swinging of the swinging support rod 34, and the jet pipe support arm 36 fixed at the other end is rotated. Similarly to the arm 33, it is made to swing in a vertical plane. This rocking motion of the jet tube support arm 36 changes the suppression angle of the jet of granules from the jet tube 16Y, and the area where the granules reach the field is from near to far away from the spreader, and from far to near. It constantly changes and moves to ensure uniform dispersion. The spraying area of the granules is determined by the elevation angle of the jet pipe 16Y, but it is also determined by the relationship with the amount of forced air from the blower 16A.
The output of the blower 16A is determined by adjusting the throttle opening of the engine 16 that drives the blower 16A. The elevation angle of the jet pipe 16Y, which determines the granule spraying area, is arbitrarily selected at the hand of the worker following the worker. That is, by appropriately rotating the crank handle 35B, the threaded rod 35 rotates via the connecting rod 35A, and the arm 33 forming the swing arm 33 rotates.
The effective length of the swing arm 33 can be changed by moving the distance between the threaded ends of the arms A and 33B, in other words, by moving the boss portion 33B' of the arm 33B along the swing support rod 34. For example, arms 33A, 33
If the threaded end of B with the threaded rod 35 becomes larger, the effective length of the swing arm 33 becomes shorter, and the length of the swinging arc rotated by the connecting rod 32 becomes shorter, but the fan center angle of the swinging motion On the contrary, it becomes larger and swings the jet tube support arm 36 at a larger angle, thereby widening the granule dispersion area. Conversely, if the effective length of the swing arm 33 is lengthened by rotating the crank handle 35B in the opposite direction, the center angle of the swing fan-shaped locus drawn by the swing support rod 34 becomes smaller, and the jet pipe support Arm 3
The locus of the rocking motion of No. 6 becomes smaller, and the distance that the granules reach becomes smaller. Therefore, when the effective length of the swing arm 33 is determined by the rotation of the crank handle 35B as a swing angle adjustment handle of the jet pipe 16Y, the wheel 12
As the granules rotate, a fan-shaped movement corresponding to the effective length of the swing arm 33 is applied to the jet pipe 16Y, and the granules are dispersed while changing the dispersion area.

[Effect of the idea]

As is clear from the above description, according to the self-propelled granule spreader of this invention, the rotational motion of the wheel is transmitted as a rocking motion to the jet pipe support arm that supports the jet pipe via the swing arm, and Since the effective length, which is the swing radius of the swing arm, can be adjusted, the spray pipe swings up and down as the spreader moves, allowing uniform spraying while changing the spray area of the granules. This has the advantage of being able to select the area for granule dispersion depending on the type of granule and the dispersion environment such as weather conditions.

[Brief explanation of drawings]

The attached drawings show an embodiment of this invention, in which Figure 1 is a side view of a self-propelled granule spreader, Figure 2 is a rear view of the same,
Figure 3 is a plan view of Figure 1 - arrow direction, Figure 4 is a plan view of Figure 3
FIG. 5 is a partially cutaway side view taken along the line in FIG. 1. 10...Casing, 11...Car body, 12...
Wheel, 12A...Axle, 12B...Transmission, 13...Handle, 13A...Grip portion, 14...Travelling engine, 14A...Connecting pipe, 15...Extension frame, 15A...Auxiliary wheel, 16...Engine, 16A...Blower, 16
B...Duct, 16X...Flexible duct,
16Y... Jet pipe, 17... Granule tank, 17A...
...Funnel part, 17B...Communication tube, 18...Recoil starter operation string, 20...Opening/closing mechanism, 21...
...Operating rod, 22... Operating lever, 30... Jet tube drive mechanism, 31... Crank arm, 31A,
32A... Universal joint, 32... Connecting rod, 32
X, 32Y...Thread part, 32Z...Nut, 33
...Swing arm, 33A, 33B...Arm, 33X...Pin, 33Y...Female thread, 34
... Swinging support rod, 35 ... Threaded rod, 35A ... Connection rod, 35B ... Crank handle, 36 ... Blow pipe support arm, 36A ... Base, 36B ... Hanging rod.

Claims (1)

[Scope of utility model registration request] In a self-propelled granule spreader, a granule tank is mounted on a self-propelled vehicle body, and the granules in the granule tank are sprayed from a jet pipe using forced air from a blower. associated with the conrod that converts into and the end of this conrod,
A swing arm that is allowed to rotate and swing, a swing support rod whose base end is fixed in the swing direction and supported by the vehicle body, and a swing arm that extends in a direction perpendicular to the swing support rod. The swing arm has an effective length extending perpendicularly to the swinging support rod. 1. A self-propelled granule spreader characterized in that the swing angle of the swing support rod can be adjusted by adjusting the effective length of the swing support rod.