JPH0645205Y2 - Long culm plant height measuring instrument - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a plant height measuring instrument for long culm crops for measuring the plant height of long culm crops such as corn and sorghum.

[Conventional technology]

The plant height is an excellent trait as an indicator of the growth of crops, and it is extremely necessary to investigate in crop research. For long-sized crops such as corn and sorghum, a stepladder is used or a long length difference is used.

[Problems to be solved by the device]

However, when a stepladder is used in the field to measure the culm length, the crop is damaged, and when a long object difference is used, it is difficult to fix a leaf whose upper end is curved, and the measurement accuracy is reduced. And, in order to obtain the required measurement accuracy, much work time is spent.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a long culm crop height measuring device that can easily and easily measure long culm crops with high accuracy.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention is a pole that can be vertically expanded and contracted along a long culm planted in a field,
It is provided at the tip of this pole, and it is opened and closed by hand to hold the leaf restraint by extending the leaf at the top of the long culm crop, and it is locked at the tip of the pole at the same height as the top of this leaf restraint. A scale that expands and contracts as the pole expands and contracts, and a digital scale that is provided on the base side of the pole and that digitally displays by the expansion and contraction of the scale are provided.

[Action]

With the above configuration, the pole is extended along the long culm crop, the upper end of the crop is extended by suppressing the leaf, and the tip of the pole is aligned with the upper end of the leaf suppressor. The plant height is displayed accurately.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 is a pole which can be expanded and contracted along the long culm planted in the field, and this pole 1 is a three-stage hollow of a lower pole 1a, a middle pole 1b, and an upper pole 1c having different thicknesses. The lower pole 1a is connected to the upper pole 1c and the middle pole 1b is connected to the upper pole 1c via the lock screws 2 and 2 provided on the upper ends of the lower pole 1a and the middle pole 1b.
Each can be expanded and contracted.

At the upper end of the upper pole 1c, a pair of upper and lower link restraints 3,
3 is fixed, hold link 4, to this link restraint 3, 3.
A pair of leaf holders 5, 5 consisting of a semi-cylindrical plate is connected via a shaft 6,
It is attached via 6 so as to be rotatable in the horizontal direction. The pair of leaf restraints 5, 5 are screwed by hinges 7 at the opposite ends on the rear side. This hinge 7 part and upper pole 1c
A leaf-holding opening / closing spring 9 made of a tension spring is stretched between the leaf-holding opening / closing spring 9 and the projection 8 protruding therefrom, and normally biases the leaf-holding springs 5, 5 to close.

On the other hand, a leaf restraining opening / closing lever 10 composed of a link is pivotally supported on the side portion of the projection 8 so as to be rotatable in the vertical direction. The opening / closing lever 10 is formed of a bent two-stage link, and the tip thereof is It is pivotally attached at the hinge 7 position of the leaf restraints 5,5. In addition, the operation string 11 is tied to the ground opening / closing lever 10, and when this string 11 is pulled downward, the leaf restraint is performed via the opening / closing lever 10.
5,5 are opened against the pulling force of the spring 9, and when the pulling of the string 11 is released, the leaf restraining 5,5 is closed by the pulling force of the spring 9. Inside the leaf retainers 5,5 are provided curved inner leaf extension combs 12,12 ....

The upper end of the upper pole 1c and the upper end of the leaf restraint 5 are at the same height, and the scale is restrained at the upper end of the upper pole 1c.
The upper end of the scale 14 is locked via 13. The base end of the scale 14 extends along the pole 1 to the lower pole 1a, and is a digital scale stand provided on the lower pole 1a.
Rolled up in a digital scale 16 supported by 15,
It is stored so that it can be rewound. The height of the scale 14 is displayed on the digital scale 16 as the scale 14 expands and contracts.

When measuring the plant height of a long culm crop planted in a field such as corn or sorghum, the long culm crop height measuring device having such a structure first sets the pole 1 along the long culm crop and sets the lock screw 2 Loosen, and pull the operation string 11 to open the leaf restraints 5,5. The long culm crops are stored in the leaf restrainers 5,5 and closed. When the pole 1 is extended in this state, the stem culms and leaves of the long culm crop are extended by the leaf retainer 5 and the inner curved leaf expansion comb 12, and the upper ends or leaves of the stem culm of the long culm crop are placed at the upper ends of the leaf retainers 5 and 5. When the tip of the scale reaches, it is stopped and the numerical value displayed on the digital scale 16 is read by moving the scale 14.

When the measurement is completed, pull the operation string 11 to hold the leaves 5,
Open 5 to disengage from the long culm crop and contract pole 1 to contract the instrument.

[Effect of device]

As described above, according to the plant height measuring instrument for long culm crops of the present invention, when measuring the plant height of a long culm crop, the expansion pole is set up along the long culm crop and the leaf restraint is opened to extend the length within the leaf restraint. The culm length can be read by a digital scale simply by accommodating culm crops, extending the pole, and aligning the upper end of the leaf restrainer with the upper end of the stem culm of the long culm crop or the tip of the leaf. Therefore, the plant height of a long culm crop can be accurately measured by an extremely simple operation without using a stepladder.

Further, even if the tip of a long culm crop is bent, it can be measured while being stretched, so that it is not necessary to stretch it by inputting, stable measurement can be performed, and measurement labor is reduced.

[Brief description of drawings]

FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a plan view. 1 ... Pole, 1a ... Lower pole, 1b ... Middle pole,
1c …… Upper pole, 2 …… Lock screw, 3 …… Link restraint, 4 …… Hold link, 5 …… Leaf restraint, 6 …… Axis,
7 ... Hinge, 8 ... Protrusion, 9 ... Leaf restraining opening / closing spring, 10
…… Leaf restraint open / close lever, 11 …… Operating string, 12 …… Inner curved leaf unfolding comb, 13 …… Scale restraint, 14 …… Scale,
15 …… Digital scale stand, 16 …… Digital scale.

Claims (1)

[Scope of utility model registration request] 1. A pole which can be expanded and contracted in the vertical direction along a long culm crop planted in a field, and a leaf provided at the tip of this pole, which can be opened and closed by hand operation and which is the upper end of the long culm crop. The leaf retainer is held by extending it, and the scale that is locked at the tip of the pole at the same height as the upper end of this leaf retainer and expands and contracts as the pole expands and contracts. A plant height measuring instrument for long culm crops, comprising: a digital scale for digital display by movement.