JPH0432888Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a line marker for a rice transplanter, and more specifically, the line marker is configured to be switchable between a use position protruding outward from the side of the machine and a storage position retracted inside the machine. Regarding the line marker of a certain rice transplanter.

In order to switch the line marker between the use position where it protrudes outward laterally and the storage position where it is retracted inside the body, the line marker is rotated around the axis in the longitudinal direction of the aircraft and stored upwards. , there is a type in which the line marker is rotated around the vertical axis and stored at the front of the aircraft.

The format in which the line-drawing marker is stored upwards is such that the axis of rotation of the marker is in the front-back direction, so the marker does not rotate backwards due to line-drawing reaction force. Although it has the advantage of weakening the biasing force of the elastic holding mechanism that holds the marker in the operating position and easily switching to the marker storage side with a light operation force, when the marker is stored in the aircraft, There was a defect that protruded greatly upwards from the top.

The method of storing the marker forward around the vertical axis has the advantage of being able to store the marker in the fuselage by effectively utilizing the length in the longitudinal direction of the fuselage, but it also ensures that the marker does not receive the line drawing reaction force. In order to stop the marker, the biasing force of the elastic holding mechanism provided at the base of the marker must be greater than the line-drawing reaction force, which has the disadvantage that it is difficult to switch to the marker storage position when turning on the ridge. Ta.

The present invention aims to eliminate the above-mentioned drawbacks, and also to suppress damage when the marker unexpectedly comes into contact with the ridge when turning at the ridge.

The characteristic structure of this invention to achieve the above purpose is as follows:
The line-drawing marker has a proximal marker portion that can be switched around the vertical axis between a use position protruding outward from the side of the aircraft and a storage position retracted inside the fuselage, and a marker portion located on the distal end of the proximal marker portion from the fuselage. It is composed of a distal marker portion that is attached to a use position that protrudes laterally outwardly and a storage position that is retired inside the fuselage, and that is switchable around the front and rear axis, and at the proximal end of the proximal marker portion, The proximal marker portion is elastically held at the use position with a biasing force greater than the drawing reaction force, and the holding can be released by swinging the proximal marker portion around the vertical axis above a certain level. An elastic holding mechanism is provided, and a spring is further provided to bias the distal end marker portion toward the use position, and this configuration provides the following functions and effects.

That is, the proximal marker portion can reliably receive the drawing reaction force due to the biasing force of the elastic holding mechanism at the base, and the distal marker portion can reliably receive the drawing reaction force.
Since the rotational axis is in the front-rear direction, it is possible to strongly oppose the drawing reaction force and to reliably hold both the proximal end marker portion and the distal end marker portion in the use position.

The drawing reaction force against the distal marker portion can be strongly opposed by the distal marker portion, which rotates around the front and back axis, so the biasing force of the spring that biases the distal marker portion toward the use position is It does not need to be weak, and the tip side marker portion can be easily switched to the retracted position with a light operating force when turning at the edge of a ridge.

In addition, since the line marker can be folded around the vertical and horizontal axes, it has the advantage of being able to be stored compactly in the aircraft. Rather than performing rigid positioning by using a locking/unlocking structure, etc., it uses an elastic holding mechanism that can be held and released by swinging the proximal marker part around the vertical axis beyond a certain level. If the marker accidentally comes into contact with the ridge during ridge turning, the proximal marker portion resists the biasing force of the elastic holding mechanism and switches to the retracted position, thereby avoiding damage to the marker. There are also advantages.

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

As shown in FIG. 1, a link mechanism 6 which can be driven up and down by a hydraulic cylinder 5 is attached to the rear of a wheeled traveling body having a driving part 1, a driving part 2, a spare seedling stand 3, etc. The seedling planting device 4 is connected to the seedling planting device 4 so that it can be raised and lowered, and power is transmitted from the self-propelled body to the seedling planting device 4, thereby constructing a riding rice transplanter capable of planting eight rows.

As shown in Figs. 1 and 3, a pair of line-drawing markers 7, 7 are placed on the left and right sides of the traveling machine to draw the planned traveling line as a guide for the next trip. An indicator 8 for the line is installed on the front of the traveling machine, and the vehicle is moved along the planned traveling line drawn on the side of the vehicle as the vehicle progresses during the previous work, and the distance between the planted shoots is It is designed to allow constant planting work.

A disconnecting portion of the seedling planting device 4 is provided between the link structure 6 and the seedling planting device 4, and when traveling on the road etc., as shown in FIG. is connected to one end of the transmission case 4a of the seedling planting device 4, and the other end is connected to a removable connector 10 attached to the link structure 6 by a connecting pin 11 so as to be swingable around the vertical axis. At the same time, a removable trolley 12 is attached to the other end of the transmission case 4a, so that the width direction of the seedling platform 4b is aligned with the front and back of the traveling machine body so that the width of the machine body is smaller than the width during work. The seedling planting device 4 is configured so that it can be towed in a state where the seedling planting device 4 is oriented in the same direction. In addition, a releasable lock pin 13 is provided to prevent the towing tool 9 from swinging relative to the coupling tool 10, so that the seedling planting device 4 and the traveling aircraft are in a straight line for safety when loading the aircraft onto a transport vehicle. The seedling planting devices 4 are arranged in parallel on top of each other and are configured to be towed in a locked state so that the seedling planting devices 4 do not swing.

Each of the left and right line drawing markers 7, 7
As shown in the figures and FIG. 3, a proximal portion 7a,
Telescoping length adjustment section 14 and chain manufacturing section 1
5, and a support rod 17 extending from the fuselage frame 16.
The proximal marker portion 7a is fixed to the support rod 17 by the connecting pin 19 inserted into the elongated hole 18 of the proximal marker portion 7a, so that the proximal marker portion 7a can freely swing back and forth around the vertical axis X of the connecting pin 19. It is installed.
Then, as shown in FIGS. 2 and 4, a pin 20 is fixed to the proximal marker portion 7a, and
A deep narrow notch 21 into which the pin 20 is inserted and locked to position the proximal end marker portion 7a in a usage position protruding laterally outwardly from the support rod 17; The marker mounting bracket portion 17a of the support rod 17 is formed with a stepped portion 22 for positioning the side marker portion 7a in a retracted position protruding forward from the support rod 17 so as to be retracted to the inside of the fuselage than in the use position; In addition, the proximal marker portion 7a is supported by the support rod 17.
A tension spring 23 that swings in the side direction is installed between the connecting pin 19 and the proximal marker portion 7a so as to elastically hold the proximal marker portion 7a in the use position or storage position. In addition, a holding mechanism 24 is configured that can be released by swinging the proximal marker portion 7a. a usage position in which the distal end marker portion 7b is attached to the proximal marker portion 7a so as to be swingable up and down about the longitudinal axis P by a connecting pin 25, and is lowered so that the action portion 15 is in contact with the ground; The operating portion 15 is configured to be switched to a retracted position raised so as to levitate above the ground, and the tip side marker portion 7
b to the above-mentioned use position by the spring 26, and the hook 27 which locks the distal end side marker portion 7b to the above-mentioned storage position is moved by the spring 28.
It is configured to be swingably attached to the proximal marker portion 7a in a state where it is biased to the operating position by the rope, and to be configured to automatically act when the distal marker portion 7b is in the retracted position, and the distal marker portion 7b is attached to the rope. 2
9 to be pulled up and retracted, and the hook 27 is released by a release wire 30 to move the distal end marker portion 7b into a use position.

In short, during normal work, the proximal end portions 7a of the left and right markers 7, 7 are placed in the use position and held by the holding mechanism 24 so as not to swing due to the drawing reaction force, and so that the marker 7 located at does not hit the seedlings, and
In order to draw a line at a predetermined position on the unplanted side land, the aircraft is turned so that only the tip side portions 7b of the left and right markers 7, 7 are switched between the use attitude and the stowed attitude, and the tip side marker portions 7b are not retracted. When an unequal force greater than the drawing reaction force acts on the marker 7, such as when the marker 7 hits a ridge, the marker 7 resists the spring 23 and swings forward or backward around the axis X, causing damage. It is configured so that it does not. When driving on the road, as shown in FIG.
By placing both the markers b in the retracted position, the entire marker 7 can be stored compactly.

As shown in FIG. 4, the operating force required to swing the proximal marker portion 7a in the usage position forward against the spring 23 is greater than the operating force required to swing the proximal marker portion 7a backward. The inclination angle a of the front inner wall of the notch 21 is formed to be larger than the inclination angle b of the rear inner wall so that the line drawing marker 7 is not swung backward by the line drawing reaction force. It is configured so that it can be reliably held and can be easily stored forward with a light operating force.

[Brief explanation of drawings]

The drawings show an example of a line drawing marker for a rice transplanter according to the present invention, and FIG. 1 is a side view of a riding type rice transplanter;
Figure 2 is a partially cutaway rear view of the marker attachment part, Figure 3 is a plan view of the marker attachment part, Figure 4 is a plane view of the holding mechanism, and Figure 5 is a plan view of the seedling planting device in the towed state. be. 7... Line drawing marker, 7a... Proximal side marker portion, 7b... Distal side marker portion, 24...
Holding mechanism, 26... Spring, P... Front and rear axis, X... Vertical axis.

Claims (1)

[Scope of utility model registration request] A proximal marker portion 7a that allows the line drawing marker 7 to be switched around the vertical axis X between a use position protruding outward from the lateral side of the fuselage and a storage position retracted inside the fuselage.
A distal marker portion 7b is attached to the distal end side of the proximal marker portion 7a so as to be switchable around the longitudinal axis P between a use position protruding laterally outward from the fuselage and a storage position retracted inside the fuselage. and elastically holding the proximal marker portion 7a at the proximal end of the proximal marker portion 7a at the use position with a biasing force greater than the drawing reaction force;
In addition, an elastic holding mechanism 24 is provided which can be held and released by swinging the proximal marker portion 7a around the vertical axis X above a certain level, and further includes a spring that biases the distal marker portion 7b toward the use position. 26 is a rice transplanter's line marker.