KR20020063689A - level control device of transfer machine for riding - Google Patents

Abstract

PURPOSE: Provided is a horizontal control system for an elevation rice planting machine which keeps the height of a planting part constant in changing balance to execute exact planting work so that it improves workability and reliability remarkably. CONSTITUTION: The horizontal control system for the elevation rice planting machine comprises the parts of: a first hydraulic cylinder which is driven when working oil is supplied from a hydraulic pump connected to an engine; a first direction change valve which is placed between the hydraulic pump and the first hydraulic cylinder to control flow direction of working oil supplied into the first hydraulic cylinder; a hydraulic cylinder for elevation which is placed at a discharge passage to elevate a planting set; and a hydraulic cylinder for horizontal control which is connected to the hydraulic pump with keeping the planting set horizontal as the level of slide of road surface detected by a slide sensor to keep the planting height of rice seedlings constant.

Description

Level control device of transfer machine for riding}

The present invention relates to a horizontal control device for a rice transplanter which allows the planting part to be level with respect to the paddy surface, and more particularly, the weight of the rice paddy field, rice paddies, and graveyards are increased. It relates to a horizontal control device for a passenger rice transplanter that can maintain the left and right planting depth constant when the left and right balance change occurs according to the left and right reciprocating movement of the seedling loading stand and the inclination of the aircraft.

As shown schematically in Figs. 1 and 2, the conventional rice transplanter includes an engine 1 mounted on the front of the body, a wheel 2, a footrest 3 on which a driver's foot is placed, and a driver's seat. (4), a pair of left and right rod-shaped grounding bodies (5) which are installed behind the wheel (2) and are grounded and slided on the neck, and inclined seedling resters (6) which reciprocate laterally with a predetermined stroke. And a planting relief (7) in which seedlings are separated and planted one by one while being circulated up and down in a seedling placed on the seedling placing table (6), a stationary float (8) in close contact with a rice paddy surface, and a driver's seat (4). It is configured to include a steering wheel (9) installed in the front.

At this time, the front part of the above-described grounding body (5) is rotatably supported in the vertical direction with the pivot point (X) as a central axis and fixed to both sides of the transverse shaft (11) rotatable in the forward and reverse directions by driving the hydraulic cylinder (10) do.

For this reason, when traveling on the road, the auxiliary wheel 13 is fixed to the lower ground driving position to support the body as the wheel 2 and the auxiliary wheel 13.

On the other hand, when entering the work paddy from the road, the auxiliary wheel 13 rises from the bottom surface as the hydraulic cylinder 10 is driven to lower the grounding body 5 to the end of the stroke, and the body of the wheel 2 And the grounding body 5 are in close contact with the rice paddy surface.

In addition, when coming out from the rice field after the seedling work, the auxiliary wheel (! 3) is fixed to the lower ground position, and then operate the hydraulic cylinder (! 0) to rotate the grounding body (5) to the top.

However, when using a passenger rice transplanter as described above, if the Yiangsi, rice field irregularities, and the left and right reciprocation of the graveyard are not leveled by the rice transplanter, the depth of left and right planting depths may occur. Due to this, the workability and reliability of planting the seedlings are remarkably degraded, and the growth of the seedlings is not constant, which causes a problem that the yield of rice is reduced.

Therefore, an object of the present invention is to precisely plant the planting depth by maintaining the constant depth of left and right plantings when irregularities are formed on the surface of the paddy field or the left and right reciprocating movements of the seedlings mount due to the weight increase of the seedlings and the change of the left and right balance due to the inclination of the gas It is to provide a horizontal control device for passenger rice transplanters that can greatly improve workability and reliability due to work.

Another object of the present invention is to provide a horizontal control device for a rice transplanter, which is capable of increasing the yield of rice by keeping the seedlings at a constant depth and preventing seedlings from growing.

1 is a schematic side view of a rice transplanter according to the prior art,

2 is a schematic plan view of a rice transplanter according to the prior art,

3 is a hydraulic circuit diagram of a horizontal control device for a rice transplanter according to the present invention.

* Explanation of symbols used in the main part of the drawing

One; engine

20; 1st hydraulic cylinder

21; 1st direction switching valve

22; Euro

23; Lifting Hydraulic Cylinder

24; Hydraulic cylinder for horizontal control

25; Solenoid valve

26; 2nd direction switching valve

27,28; Relief valve

P; Hydraulic pump

The above-described object of the present invention is an engine and a driver's seat mounted in front of a body, a seedling stand mounted to the rear of the body and reciprocating in a left and right direction within a predetermined stroke range, and a seedling placed on the seedling stand. A horizontal control device for a rice transplanter, which includes a planting aid in which seedlings are separated and planted one by one in a circulating operation, and a stop float is grounded to a rice field surface, the first driving device being supplied with hydraulic oil from a hydraulic pump connected to the engine. A first direction switching valve installed between the hydraulic cylinder, the hydraulic pump and the first hydraulic cylinder to control the flow direction of the hydraulic oil supplied to the first hydraulic cylinder, and a discharge passage passing through the first direction switching valve Lifting hydraulic cylinder for lifting and lowering the relief, and connected to the hydraulic pump and driven according to the inclination of the road surface detected by the inclination sensor installed in the stationary float. Maintaining the horizontal to the horizontal is achieved by the control device for passenger rice transplanter characterized in that comprises a horizontal hydraulic cylinder control to maintain a constant depth to provide seedlings sikbu.

According to a preferred embodiment, there is provided a solenoid valve which is installed between the hydraulic pump and the horizontal control hydraulic cylinder described above and driven when an electric signal is applied by the driver to control the flow of hydraulic oil supplied to the horizontal control hydraulic cylinder.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to be described in detail to be easily carried out by those skilled in the art in order to facilitate understanding of the technical contents, This does not mean that the technical scope and spirit of the present invention is limited.

1 and 2, the engine 1 and the driver's seat 4 mounted in front of the body, and the seedling stand 6 mounted to the rear of the body to reciprocate in the left and right directions within a predetermined stroke range 6 ), A planting vessel (7) which circulates up and down in a seedling placed on the seedling placing table (6) and removes and plantes the seedlings one by one in turn, and a stop float (8) which is grounded to the paddy surface. Applies to rice transplanters.

Therefore, according to a preferred embodiment of the present invention, as shown schematically in FIG. 3, from the hydraulic pump P through a flow path 31 connected to the hydraulic pump P connected to the engine 1 described above. It is installed between the first hydraulic cylinder 20 driven by the hydraulic oil discharged, the hydraulic pump P and the first hydraulic cylinder 20 to control the flow direction of the hydraulic oil supplied to the first hydraulic cylinder 20 A lifting hydraulic cylinder 23 for raising and lowering the planting tank 7 installed in the discharge passage 22 passing through the first direction switching valve 21, the first direction switching valve 21, and a hydraulic pump ( For horizontal control, which is connected to the discharge flow path 30 of P) and keeps the planting depth of the seedling constant by keeping the planting depth 7 in accordance with the inclination of the road surface detected by the inclination sensor installed in the stationary float 8. It is installed between the hydraulic cylinder 24, the hydraulic pump P and the hydraulic cylinder 24 for horizontal control, It is provided with a solenoid valve 25 for controlling the flow of the operating oil supplied to the horizontal control hydraulic cylinder 24 by driving in accordance with the electrical signal applied by the.

Reference numeral 26 is installed between the first direction switching valve 21 and the lifting hydraulic cylinder 23 and is controlled when the switching signal is applied from the outside to control the flow direction of the hydraulic oil supplied to the lifting hydraulic cylinder 23 The second direction switching valve, 27 is a relief valve for protecting the circuit by draining to the hydraulic tank (T) when a load of more than the set pressure (60kgf / ㎠) in the hydraulic circuit is generated, 28 is a hydraulic cylinder for horizontal control (24 Relief valve to drain to the hydraulic tank (T) when the overload occurs, 29 to prevent the hydraulic oil supplied to the first hydraulic cylinder 20 and the lifting hydraulic cylinder 23 to flow back to the horizontal control hydraulic cylinder (24) Check valve.

Hereinafter, a method of using the horizontal control device for a rice transplanter according to the present invention will be described.

As shown in FIG. 3, the operating pressure discharged from the hydraulic pump P at the time of driving the engine 1 is boosted to a preset pressure by the above-described relief valve 27, so that the first hydraulic cylinder 20 is operated. Or it is supplied to the lifting hydraulic cylinder 23 to drive them.

On the other hand, during the transfer operation in the state of switching the automatic / manual conversion switch of the above-mentioned hydraulic cylinder 24 for horizontal control to the automatic mode, the weight of the graveyard is increased and the left and right reciprocating movement during operation If the left and right balance change is large according to the inclination of the device, the left and right planting depth difference occurs and the growth of seedlings is not uniform

At this time, as the signal detected that the road surface is inclined by the inclination sensor installed in the above-mentioned stop float 8 is applied to the solenoid valve 25 described above and switched to the left or right in the drawing, The operating pressure discharged from the hydraulic pump P passes through the solenoid valve 25 switched through the flow path 30, and is supplied to the hydraulic control cylinder 24 for horizontal control to drive the gas to the horizontal surface. You can maintain state.

At this time, when an overload exceeding the pressure set in the above-described horizontal control hydraulic cylinder 24 is generated, the operating pressure discharged from the above-described hydraulic pump P passes through the relief valve 28 to the hydraulic tank T. To drain.

That is, when the engine 1 is started and the automatic / manual switching switch of the hydraulic cylinder 24 for horizontal control is switched to the automatic mode, the signal detected by the inclination sensor attached to the stop float 8 is applied to the signal. Therefore, the planting relief 7 is driven so that it is always horizontal with respect to the paddy surface.

On the other hand, when the paddy surface is not horizontal, the seedling stand 6 may be tilted to fit the desired paddy surface.

As mentioned above, according to a preferable embodiment, it has the following advantages.

When the uneven portion is formed on the surface of the paddy field or the weight of the graveyard increases, the left and right planting depth is kept constant when the left and right balance changes due to the inclination of the tomb. It can be greatly improved.

In addition, the left and right planting depth is kept constant to prevent the formation of floating seedlings so that the growth of the seedlings is good to increase the yield of rice.

Claims (2)

An engine and a driver's seat mounted in front of the aircraft, a seedling stand mounted to the rear of the aircraft and reciprocating in a left and right direction within a predetermined stroke range, and the seedlings placed one after another by circulating up and down in a seedling placed on the seedling holder. In a horizontal control device for a rice transplanter having a planting relief planted separately and a stationary float grounded to a rice paddy surface: A first hydraulic cylinder driven when hydraulic oil is supplied from a hydraulic pump connected to the engine; A first direction switching valve installed between the hydraulic pump and the first hydraulic cylinder to control a flow direction of the working oil supplied to the first hydraulic cylinder; A lifting hydraulic cylinder installed in a discharge passage through the first direction switching valve to lift and lower the planting aid; And It is connected to the hydraulic pump and driven, the horizontal control hydraulic cylinder to maintain the planting depth of the seedlings by maintaining the level of planting relief according to the inclination of the road surface detected by the inclination sensor installed in the stop float Horizontal control device for rice transplanters. [2] The solenoid valve of claim 1, further comprising: a solenoid valve installed between the hydraulic pump and the horizontal control hydraulic cylinder to control the flow of hydraulic oil supplied to the horizontal control hydraulic cylinder by driving when an electric signal is applied by the driver. Horizontal control device for rice transplanters.