JP2547582Y2 - Metering operation device for power spreader - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metering operation device for a power sprayer which can effectively perform a small amount adjustment of a drug metering in multiple stages.

[0002]

2. Description of the Related Art Conventionally, a metering lever capable of adjusting the opening of a metering shutter located below a medicine tank is operated by operating a guide plate having a large number of corrugated engagement grooves formed on one side in the entire longitudinal direction. A power spreader configured to be inserted into a groove so as to be able to perform a metering operation is known as disclosed in Japanese Utility Model Laid-Open No. 55-70717, and as disclosed in Japanese Utility Model Laid-Open No. 62-187660. It is also known that a slider having engagement grooves having different pitches on both sides is rotated to perform fine adjustment of the metering by a metering lever.

[0003]

However, in the metering operation device as disclosed in Japanese Utility Model Laid-Open No. 55-70717, the number of steps of metering is small because the number of engagement grooves of the slider is small. Moving the slider one by one makes operation difficult and cumbersome, making it impossible to perform effective micro-adjustment, and the work must be interrupted while moving or rotating the slider, resulting in poor workability. I have.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised to solve such a problem and to immediately switch a metering lever to effectively perform a multi-step micro-adjustment. The metering lever, which can adjust the opening of the metering shutter below, can be adjusted by inserting it into the operation groove of the guide plate that has a number of wavy engagement grooves over the entire length in one vertical direction. In the power spreader configured as described above, the other side edge of the operation groove parallel to the row of the engagement grooves has a plurality of corrugated second shapes having a pitch shorter than the pitch of the engagement grooves.
An engaging groove is formed over the entire length in the vertical direction, and a vertical partition guide portion for switching and guiding the metering lever between the engaging groove side and the second engaging groove side below the operation groove. In the center of the vehicle.

[0005]

Accordingly, when the metering lever is guided to one side by the partition guide and is inserted into the operation groove on the engagement groove side, the coarse adjustment is performed while the metering lever is engaged with the engagement groove. As in the past, the amount operation can be effectively performed in multiple stages, and when the adjusting lever is switched to the other side of the partition guide and guided to enter the operation groove on the second engagement groove side, While the metering lever is being engaged with the second engagement groove, effective fine adjustment can be performed in multiple stages.

[0006]

FIG. 2 is a rear view of a backpack type power spreader, and a discharge section 6 which can discharge and adjust by a metering shutter is provided in a lower part of a medicine tank A for storing a granular material or the like. A blower 9 driven by an engine 8 with a cover 7 is provided below and in communication with the blower 9 so that a jet hose or the like can be connected to a discharge tube 10 at the tip of the blower 9. A central portion of the guide plate 3 is fixed to the front end surface of the bracket 5 mounted on the lateral side of the blower 9 by using both screws 11, and one side of the guide plate 3 has a large number of corrugated engagements on one side. Operation groove 12 of throttle lever 13 having groove 12a
And the throttle lever 13 is linked to the engine 8 side so as to have the same structure as the conventional structure.

On one side of the guide plate 3, there is formed an operation groove 2 of the metering lever 1 which is wide and vertically elongated and is parallel to the operation groove 12. A plurality of corrugated engaging grooves 2a are formed over the entire length in the direction, and a pitch P2 shorter than the pitch P1 of the engaging grooves 2a is provided on the other side edge of the operation groove 2 parallel to the row of the engaging grooves 2a. A large number of corrugated second engagement grooves 2b are formed, and a partition guide plate 4 fixed to the side surface of the bracket 5 by screws 14 is provided below the operation groove 2; 4, a groove 4b having substantially the same size as the operation groove 2 is formed, and a metering lever 1 is provided at the center of the groove 4b.
Can be switched between the engagement groove 2a side and the second engagement groove 2b side and guided, and the partition guide part 4a which is supported by the reinforcement frame 15 and one end side is a free end is formed and formed.

A base boss 1a of the metering lever 1 inserted into the operation groove 2 and the groove 4b is fitted and pivotally attached to a support shaft 16 projecting from the bracket 5 in the width direction of the operation groove 2. ,
An intermediate portion of the metering lever 1 can be bent around a support shaft 17 in a direction perpendicular to the support shaft 16, and latches 18 a are provided on both sides of a lever portion which is a portion in the front-rear direction across the support shaft 17. , 18b, respectively, and both ends of both tension springs 19 are connected to latches 18a, 18b, respectively.
An operation wire 20 connected to a lever portion between the support shaft 17 and the boss 1a is linked to and connected to a metering shutter side of the discharge unit 6.

In addition, a small protruding projection 1b is integrally formed at the portion of the metering lever 1 which engages with the engagement groove 2b.

Therefore, the metering lever 1 is bent from the position of the support shaft 17 and switched to both sides of the partition guide 4a as shown by the arrow A in FIG. In this case, as shown in FIG. 5, both tension springs 19 exceed the fulcrum, and the metering lever 1 is moved to the engagement groove 2a side or the second engagement groove 2 as shown in FIG.
When the metering lever 1 is inserted into the operation groove 2 on the side of the engagement groove 2a, the engagement groove 2 is pressed.
In this manner, coarse adjustment operation can be effectively performed in multiple stages as in the prior art while the adjustment lever 1 is engaged with the adjustment lever 1a, and the adjustment lever 1 is moved to the other side of the partition guide 4a. When the guide is switched and guided into the operation groove 2 on the side of the second engagement groove 2b, effective micro-adjustment can be performed in multiple stages while engaging the projection 1b of the metering lever 1 with the second engagement groove 2b. .

FIG. 6 shows another embodiment, which is constructed in substantially the same manner as shown in the previous embodiment by the same reference numerals. A ball joint type is fitted on a spherical seat 21 formed on the support shaft 16, and an operation wire 20 is connected to the base of the metering lever 1 in an interlocking manner. When switching to one side of the portion 4a to engage with the engagement groove 2b, the distal end side of the metering lever 1 is bent in the direction of arrow C as shown by a virtual line so as not to hit the engagement groove 2b. When the slide is brought into contact with one side edge of the partition guide 4a and then released from the metering lever 1 at a desired metering position, the metering lever 1 is engaged with the engaging groove 2b by the restoring force. In addition, the metering lever 1 is switched to the other side of the partition guide 4a and operated in the same manner as described above. And, the metering lever 1 engaging groove 2b
Can be engaged.

[0012]

[Effect of the Invention] As described above, the present invention provides a metering lever (1).
Is guided to one side by the partition guide portion (4a) and is inserted into the operation groove (2) on the engagement groove (2a) side, and the metering lever (1) is engaged with the engagement groove (2a). In this case, the rough metering operation can be effectively performed in multiple stages, and the second lever is guided by switching the metering lever (1) to the other side of the partition guide (4a). When the adjustment lever (1) is inserted into the operation groove (2) on the side of the engagement groove (2b), effective fine adjustment can be performed in multiple stages while the metering lever (1) is engaged with the second engagement groove (2b) having a short pitch. This makes it possible to perform the rough adjustment operation and the minute adjustment operation easily by switching the adjustment lever (1) easily and with good operability and effectively in multiple steps. Have.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of an embodiment of the present invention.

FIG. 2 is a front view showing the backpack type power spreader.

FIG. 3 is an exploded front view showing a part of FIG. 1;

FIG. 4 is a side view showing the lateral side of FIG. 1;

FIG. 5 is a plan sectional view showing a part of FIG. 4;

FIG. 6 is a plan sectional view showing another embodiment.

[Explanation of symbols]

 A medicine tank 1 metering lever 2 operation groove 2a engagement groove 3 guide plate P1, P2 pitch 2b second engagement groove 4 partition guide plate 4a partition guide portion

Claims (1)

(57) [Scope of request for utility model registration] 1. A metering lever (1) capable of adjusting the opening of a metering shutter below a medicine tank (A) is provided with a large number of corrugated engaging grooves (2a) over the entire length in one longitudinal direction. In the power spreader, which is configured to be inserted into the operation groove (2) of the guide plate (3) formed so as to be able to perform a metering operation, the operation groove (2) which is parallel to the row of the engagement grooves (2a) is provided. On the other side edge, a number of corrugated second engagement grooves (2b) having a pitch (P2) shorter than the pitch (P1) of the engagement grooves (2a) are formed over the entire length in the vertical direction, and the operation grooves ( Below 2),
A partition guide plate having a vertical partition guide portion (4a) at the center for guiding the metering lever (1) by switching between the engagement groove (2a) side and the second engagement groove (2b) side. (4) A metering operation device characterized by being constructed.