JPS5876008A - Elevation control device for the planting device in a rice transplanter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides pressure oil supply to a hydraulic cylinder, oil discharge, and oil supply/drainage connection to drive a pupil to a traveling aircraft.
The spool of the rounded spool 2 8-position switching control valve that lifts and stops lifting and lowering is formed with an underlap part that acts in a certain small range between the neutral position and the raised position, and the effect of this underramp part is In Hankyoku,
By draining the cylinder oil in small quantities, the system is configured to create a neutral stable position l1ilE run in which the cylinder is raised and lowered by balancing the position at which the device is lowered and the oil pressure supplied and discharged to the cylinder. The device is equipped with 70 grounding floats that can be freely adjusted up and down on the left and right sides, and the swinging fulcrums of these grounding floats are integrated with the upper and lower blades as the ground pressure improves. A displacement oJ function K 1llllJ body is provided with an m structure that connects the body, and the rigid body connection mechanism and the spool of the control valve are linked, so that the spool + of the control valve is connected based on the integral vertical displacement of the ground contact 70 ! i-switching work IKIJ
By doing so, the planting is carried out in order to maintain the ground pressure of the ground 70-to within a set range by the lifting control system of the machine.

In this type of rice transplanter, planting is carried out by raising and lowering the device.In the case of a rice transplanter equipped with a control car, raising and lowering control was not previously performed by forming an untarl part as described above on the spool of the control valve. Even by a minute movement of the spool between the JA descending neutral position and the ascending position, the pressure oil in the cylinder is discharged little by little, and the planting device M is lowered at a slow speed,
Alternatively, planting can be done by stopping the device from lifting or lowering due to the pressure balance between oil supply and drainage to the cylinder.
In other words, planting is grounding due to small irregularities in the blood.
Since the above-mentioned untarlap section can control the elevation even with a minute vertical displacement of the zero point, the lowering control @J to maintain the grounding pressure of the grounding float within the contact range as a whole is accurate and smooth. can be done. Moreover, the first fulcrum of kalpa to l1iI image place 70-to! By connecting the #III body so that it can be placed in one piece in the upper and lower blade directions, for example,
Even if there are many irregularities in the direction of the stone force, the rudder can be used to capture the ground flow of the float due to the unevenness of the float due to local unevenness. This has the advantage of being able to suppress the overall deep planting and soaking of seeds as would be the case if only the floats were configured to detect ground pressure.0 However, on the other hand, if all of the ground floats were configured to detect ground pressure. ＃l Because the planting machine is mounted on the ground, the 70mm machine that supports the device on the ground is low, and the descending control of the planting device is likely to be a bit excessive. The fact that the spool is configured in a small range between the neutral position and the raised position allows the spool to move smoothly into the neutral female position. Problems that resulted in hunting in the elevation control occurred frequently.

The present invention adopts a lifting/lowering 1tF11 starvation method that can achieve the superior advantages as described above, and also makes it possible to suppress the hunting force of lifting/lowering control as described above. Have a purpose in mind.

The elevation control device for the planting device in the rice transplanter according to the present invention has the above-mentioned configuration, and is provided with a mechanism that provides resistance to the switching movement of the spool of the control valve from the stable neutral position to the raised position. Because it is characterized by
Planting not only suppresses the overshoot of the device's upward control, but also attenuates the overshoot of the downward control, and by repeating this process, the spool can be brought to a stable neutral position. Smooth return is the key to Mf cage, and overall, f-plus lifting control is performed with less hunting. Moreover, 1
Since it is sufficient to provide resistance to the switching movement of the spool from the stable neutral position to the raised position, it is advantageous in terms of structure and cost.

Hereinafter, the present invention will be described in 4 ways, and a
To explain one aircraft, it is 9I! As shown in Figure I1,
Traveling body (Al/$ frame + 11 At the rear, one top link (2A) and a pair of right lower links (2B)
A quadratic planting system i- is connected in a manner that can be raised and lowered via a link a structure (2) consisting of
), there are two ground floats (8 mm) that can move freely under the ground using the front and rear intermediate points S as fulcrums.

(8B) is connected to the left and right sides, and in front! , to 7 le 8 f + and link machine W (hydraulic cylinder in the darkness with 21)
4), and by switching the spool 28 position switching control valve ff) for the hydraulic cylinder (4),
The planting is configured to be driven up and down by the device wItlH11.

In addition, a mechanism (6) is provided for connecting the swinging fulcrums of the ground contact points (8A) and (8B) to the upper and lower blades with a rigid body connected to the integral mass rudder based on the ground pressure seismic structure. , the spool 1 of the rigid connection mechanism (-) and the control valve (Y)
61 to a pin (7) connected to the spool (6), a rotating shaft (9) connected to the operating arm 1811je, and a li at the other end of the rotating shaft (9). !
The sensor wire (1 and ! [Ik!] is connected to the sensor arm of the il sensor and the spool (6) is interlocked through a linkage consisting of a spring that biases the spool (6) outward. , gil ground 70-) (8A),
Based on the integral vertical displacement of (8B), the Tsuruhime control pulp (ma) is selectively switched so that the ground pressure of these ground floats (8b) and (8b) is maintained within the set range. The planting equipment is configured to control (Hl'i drive sowing).

In the above [gJ turn @B191, the cylindrical member (with its beak attached to the outside of the animal At the same time, the cylindrical member (1) is connected to the manual operation lever KASUWO to operate the +I7I's own control system when turning to change the force in the image or when driving on the road 1. The pickle is configured so that the device*tit can be forcibly removed without any force.

The operating lever σQ can be freely moved from the raised position full to the lowered position (b) from the vertical neutral position il (to) 1kJJ&, and vice versa. With L, when operating the device 1B+ from a steep ascending position to the ground, by operating the lever uQ from the neutral position 11 [(Nl to the descending operating position p), 1? ] The spool (6) is operated by the descending biasing force of the floating float, and then the grounding float [
8Δ].

When the planted plant [8B] is in a rough running condition, it is configured such that by operating the lever in the lower position (m), the automatic elevation control system can perform elevation control of 1 kfF.

The rigid connection mechanism (5) is a device (8) for planting
The planting is carried out using a common connecting shaft (11f1 earthing 70-t (aA),
While taking a look at the arms (BOA) and (BOB) which are pivotally connected to the brackets (19A) and (19B) of (sB), respectively, there is a senpuor of the linkage reserve I in the middle part of the common connection shaft.・Ear (sensing arm body 1 connected to one) is connected to the ground float (3A)
, (BB) due to the earthwork displacement of the rocking fulcrum of the sensing arm (B)]
It is configured to switch and operate the spool (6) of the float (8A) via the 10 sensing arm @υ.
, (8B) is provided with a spring @ that biases it to the ground contact force, and this spring (Foundation) is connected to the operating lever (2) on the side of the traveling aircraft via a wire, and by operating this operating lever 4. The configuration is such that the load I to be sensed by the spring can be changed.

Spool + 11) I-j of the control valve (Ma) @ As shown in Fig. ! 1 and the second tank boat FDL, and for planting, the device (5) is hydraulically activated, and the raised position (in the case of disconnection, medium fire ambassador M) (am) and the left large diameter are operated to the pressure side. * (ab) Close the first and second tank boats lb) and ldl, respectively, and ii) connect them to the pump boat lo+ and the cylinder side boat ial' to supply pressurized oil to the cylinder (4) and plant. vc
* Driving up IHL and operating it to the right to lower position 11 [(In DI, MtJ cylinder boat tal and first pump boat, tbl, and pump boat) +C
The tank boat I and the second tank boat (di) are preparing to carry out a late retracing, drain oil from the cylinder (4), and plant the tank (fi).

Further, on the right side of the central large diameter part (6a) of the spool (6), in a certain small range between the vertical neutral position IJ14 and the ascending position 1 m (b), there is a cylinder side boat (a).
), the cylinder side boat fil and @2 are connected via the small part (6c) of the spool (6).
An underlap portion is formed for communication and connection with the tank boat td). When there is little overlap between this underlap part (to) and the cylinder side boat tal, the second tank boat (dl and spool (6)
The distance vs<e> becomes relatively large, the drain resistance becomes small, and the oil is drained little by little from the hydraulic cylinder (4).
For planting, the device is lowered at normal speed. Also, when the man between the underlap part - and the cylinder side boat la+ increases, the distance between the cylinder side boat 181 and the spool (6) (fJ remains constant and the above-mentioned darkness 11g (
e) becomes small and the drain resistance becomes large, the back pressure due to this drain resistance becomes balanced with the hydraulic cylinder internal pressure, and the expansion and contraction of the hydraulic cylinder (4) stops.In other words, planting is done according to the A neutral stable state appears in which the ascent and descent of the vehicle stops. Therefore, in the darkness between the original neutral position (5) of the spool (6) and the ascending position 1i , between this second lowering position (D) and the original rising position - (B), the spool (6) is shifted in the dark until the neutral female position (N) is formed due to the equilibrium of the supply and discharge hydraulic pressure. Also, for planting, the raising and lowering of the entire planting device can be controlled.

Therefore, the grounding float (
8), (1) The planting can be controlled smoothly in raising and lowering even in the case of a small one-piece vertically lying position.

Therefore, the spool (6) is moved from the standing position (M) to the raised position (481-1 to Ul) in a case (B) connected to the pulp booth (To) of the pulp field. and when,
Arm vibration and contact a specific to the inner 1g 1 axis of rotation (9)
The abutting member g4 using a fat bolt is a nut four.

(29) At the same time as storing through the contact member a
11 Provide a spring force that biases the contact force of the control valve (man's spool + 810 female) from the neutral position 1k (N') to the 1 raised position (off) to resist the switching movement. It constitutes the granting mechanism @υ.

On the other hand, @"4 in the figure shows that the actuator wire locking position of both wires (111) is changed by the swinging operation of the lever, so that the spring senses the load set by the spring. While holding constant or almost constant, ground 70-
The planting depth is adjusted by changing the rocking fulcrum position tm of (8A) and (8B) up or down.

[Brief explanation of the drawing]

The drawing shows an example of the elevator system for the passenger elevator, and the figure 2 shows the elevator system. Figure, tSS diagram ri
The perspective view of the main part, FIG. 4, is an enlarged cross-sectional view of the loop. (8A), (8B)... Ground float, (
4)...Hydraulic cylinder, +51...1
llll one body connection mechanism, (6)...spool,
4...Underlap part, -...Spring, 0 illusion...Resistance imparting mechanism, (4)...
... Traveling machine, (8) ... Planting device, (Ma) ... Pulp, N ... Elevating neutral position,
(U)...Elevated position, (b)...Inferior position, (IJ)...Neutral stable position〇

Claims (1)

[Claims] ■ By supplying pressurized oil to the hydraulic cylinder (4), connecting oil, and supplying and discharging oil, planting is possible. Formula 8
Position rjIL+7J exchange control valve (man's spool (6),
An underlap section is formed that operates in a certain small range between the neutral position f11 of the car and the ascending position m (b), and the cylinder is discharged in small amounts in the operating range of this underlap section. The price is determined by the device control) if the oil is lowered! [(1))] and the cylinder (4) is placed in a neutral stable position (Ia so as to appear in 1, and the above-mentioned planting is done in the device field) where the lifting and lowering stops due to the equilibrium of the supply and discharge hydraulic pressure to the cylinder (4), and the L lower (8A)
, (8B) are installed in parallel with the stone sword, and the plow 1 fulcrum of these ground floats (8A) and (8B) is set to the ground pressure change Kf.
A mechanism (61) is provided, and the integral connection mechanism (6) and the spool (6) of the control valve (V) are linked, Therefore, the control valve (spool (6) of Ma
By switching and operating the
The grounding 7 cl −) (8
A), (8B) In order to maintain the ground pressure 1 within the setting range 4, planting with the rice transplanter, which is the #1 force, is done on the lifting side 4 of the device.
8-, which is equipped with a mechanism that provides resistance to the switching movement of the control valve (Man's school (6) from the indoor position 1itC1/) to the ascending position 1u). Planting in a rice field machine using ridges is controlled by the device's lifting and lowering control device. ■ The field fi described in item 0 of the special wfsIIJ ice range in which the resistance imparting mechanism 〇 utilizes a spring.
Planting at one root is controlled by the lifting and lowering device.