JP2870094B2 - Seedling machine operating device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for operating a seedling plant.

(Prior Art and Problems to be Solved by the Invention) In order to maintain a constant seedling planting depth, a seedling transplanter has a relative position between a wheel and a seedling plant having a float sliding on a soil surface. The height is changed and controlled by a hydraulic lifting device. In addition, there are planting clutches for turning on and off the transmission of the seedling planting device. In order to simplify these operations at the time of seedling planting operation, with a single operating lever, these planting clutches, a lifting device, By interlocking the operation with the traveling speed change, the planting clutch is disengaged when the elevating device is raised or fixed, and the planting clutch is engaged when the elevating device is lowered, and the seedling transplanter descends to plant seedlings. It is configured to be able to perform work.

Conventionally, such an operating lever is located on the side of the cockpit and is manually operated from the cockpit. However, the operating lever includes a sub-transmission, a planting clutch, and a lifting device. Since they are operated simultaneously, a considerable operation load is applied, the number of operation steps is large, and erroneous operations are likely to occur.

The present invention facilitates and speeds up such an interlocking operation of the operation lever.

(Means for Solving the Problems) The present invention provides a single transmission that operates a transmission that changes the running speed, a planting clutch that switches on and off the transmission of a seedling plant, and a lifting device that moves up and down the seedling plant. The operation device of the seedling plant is characterized in that the operation lever is provided forward of the cockpit and the high-speed operation position is located on the front side with respect to the low-speed operation position of the operation lever.

(Operation) In the operation device of the seedling transplanter of the present invention, the operator grips the operation lever from the cockpit and operates the operation lever from the rear low-speed operation position to the front high-speed operation position. In this way, the seedling plant at the raised position, the planting clutch disengagement is lowered, the planting clutch is turned on, and the transmission is operated to the high speed side to increase the traveling speed. Is operated from the high-speed operation position on the front side to the low-speed operation position on the rear side to raise the seedling-planting device in the lowering position and the planting clutch, disengage the planting clutch, and change the speed. Operate the device to the low speed side to reduce the traveling speed.

(Effects of the Invention) With a single operating lever, it is possible to operate the shifting of seedling planting traveling speed, the planting clutch and the elevating device under a certain interlocking operation, and furthermore, to operate the operating lever to the rear side. When the traveling speed is controlled to be low, the operator who is facing forward moves the operating lever to the rear while folding his arm. Since the pull operation is performed, this operation is easy to perform, and the deceleration operation can be performed quickly. Conversely, when operating the traveling speed to a high speed side, since the operator facing forward pushes the operation lever forward while extending his arm, the operation is performed.
This operation is hardly performed at all, and the operation is performed while paying attention. Therefore, the operating device can easily perform the shift, the operation of the planting clutch, and the lifting / lowering device with a single operating lever, and it is safe because the traveling speed is prevented from suddenly increasing.

(Example) In a figure example, a seedling planting machine connects a seedling plant 2 to a rear part of a tractor body 1 so as to be able to move up and down.
Front wheel 4 steerable by steering handle 3
And a rear wheel 5, and is driven by four wheels driven by an engine 7 below a cockpit 6. Under the handle post 8 of the steering handle 3, a transmission 10 for transmitting the front wheel 4, the rear wheel 8, the seedling device 2 to the power take-off shaft 9, etc. from the engine 7 is provided below the handle post 8. Seeding operation can be performed by an operation lever 12 or the like that is operated in the front-rear direction along the outside of the lever guide 11.

The seedling plant 2 includes a seedling tank 1 for storing seedlings in a seedling plant 13.
4, a planting device 15 for separating and transplanting the seedlings fed from the seedling tank 14, and a float 16 supporting the seedling plant 13 and the like and sliding on the soil surface.
To the lifting link 17 comprising a parallel link mechanism at the rear of the vehicle body 1.
The lifting cylinder 18 is connected to the rear end of the vehicle and is moved up and down by control of a hydraulic circuit of a lifting cylinder 18 provided between the vehicle body 1 and the lifting link 17.

The elevating device 19 is constituted by the elevating cylinder 18, the elevating link 17, the elevating control valve of the hydraulic circuit, and the like. or,
The raising and lowering control valve is interlocked by the vertical movement of the float 16, and when the soil plow becomes deeper and the float 16 is raised, the raising and lowering device 19 raises the seedling plant 2 and conversely, the soil plow becomes shallower. When the float 16 is moved downward, the seedling planting apparatus 2 is lowered, the sliding pressure by the float 16 is made constant, and the pitching control is performed so as to keep the seedling planting depth constant.

The transmission 10 includes a drive shaft 20 transmitted from the engine 7.
And a transmission shaft 24 protruding from a transmission case that houses the main transmission and the main shaft transmission. Between the belts 25 and 26 in two stages, one for high speed and the other for low speed.
Is a configuration of a subtransmission that can be shifted by turning on and off the transmission by tensioning by tension pulleys 27 and 28. High-speed pulley 29 and low-speed pulley 30 with different pulley diameters of transmission shaft 24
And is set to.

From the transmission shaft 24 thus shifted, the front wheels 4 and the rear wheels 5 are transmitted through the main transmission, and the power take-out shaft 9 is transmitted through the planting clutch. The transmission is changed in speed between high planting speed and low planting speed in synchronization with the planting speed.

An operation cam mechanism 31 for operating the tension pulleys 27, 28 and the like is provided above the transmission shaft 24, and is interlocked with the operation lever 12 to perform a switching operation. Transmission shaft
The cam shaft 32 and the arm shafts 33 and 34 along the same direction as 24 are arranged at substantially triangular points of an equilateral triangular shape. On the cam shaft 32, an elevating cylinder 18 is controlled to extend and contract by interlocking an elevating control valve of a hydraulic circuit. The transmission of the seedling plant 2 is turned on and off by interlocking the raising / lowering cam A, the high speed cam B interlocking the high speed tension pulley 27, the low speed cam C interlocking the low speed tension pulley 28, and the planting clutch of the power take-off shaft 9. And a cam arm 35 integrated with these cams A to D and a lever arm 36 at the base of the operation lever 12 are integrated with each other. The cams A to D can be turned around the cam shaft 32 by connecting the link 37 and turning the operation lever 12 back and forth around the lever shaft 38.

The arm shaft 33 is provided with a high-speed arm 39 that slides on the high-speed cam B and a planting arm 40 that slides on the planting cam D. The other arm shaft 34 has a lifting cam A An elevating arm 41 sliding in contact with the low-speed cam C and a low-speed arm 42 sliding in contact with the low-speed cam C are rotatably provided, and rollers are provided in sliding contact portions of the arms 39 to 42 with the cams A to D.

A wire is connected between the lift arm 41 and the lift control valve.
Linked at 43. The high-speed arm 39 is connected to a tension arm 46 via a rod 44 and a spring 45. The low-speed arm 42 is connected to a tension arm 49 via a rod 47 and a spring 48. The planting arm 40 connects the wire 50 to the clutch shifter of the planting clutch.

The operation lever 12 is guided by the lever guide 11 in the front-rear direction. This operation position is set as shown in FIG. "Low speed": "Off": "Up"
(2) The relationship as the “fixed” position is “low speed”: “off”: “fixed”. (3) The relationship as the “lower” position is “low speed”: “off”: “down”. (4) The relationship as the “planting low speed” position is defined as “low speed”:
“Enter”: “Down”, (5) The relationship as “planting high speed” position is “High speed”:
"Enter": "down", and (6) the relationship as the "high speed" position is "high speed": "off": "down".

In addition, the order is set from the rear side to the front side in the order of (1) to (6), and the relationship timing among the sub-transmissions, the planting clutch, and the elevating device is set.

The operation direction of the operation lever 12 is set to the "up" (1) position on the rear side in the front-rear direction, and "high speed" (6) on the front side.
The position has been set. The operation lever 12 is located outside the lever guide 11 at a position where the gripping portion projects outside the steering handle 3. However, even if the operation stroke is multi-step along the front-rear direction as described above, "Raise" on the digit side
(1) Since the operation of the position is a short time during the operation, it is difficult for the operator to get in the way, and the "planting high speed" (5) or "high speed" (6) position is the cockpit. When the seat 6 is in the sitting posture, the hand is hard to reach, and the upper body must be protruded to the front side or the switching operation must be performed in a standing posture. Therefore, the user naturally pays attention to these operations. Also in this operation, since the grip of the operation lever 12 is located outside the steering handle 3, the operation is easy. Reference numeral 54 denotes a throttle lever, which can be moved back and forth along the inside of the operation lever 12.

Reference numeral 51 denotes a main shift lever provided on the side of the handle post 8 opposite to the operation lever 12;
As in the case of 12, it is configured to move in the front-rear direction along the outside of the lever guide 53, and the main transmission is operated in conjunction. The main transmission lever 51 is connected to a wire 52 by a check valve mechanism in the hydraulic circuit of the elevating control valve by operating the main transmission lever 51 to the neutral position N. The hydraulic circuit is locked so that the raising / lowering position of the seedling plant 2 by the raising / lowering cylinder 18 can be fixed. Therefore, when the seedling plant 2 can be transmitted in a state where the running is stopped, the main transmission lever 51 is operated to the neutral position, and the operation lever 12 is set to “planting low speed” (4) or “ It may be operated to the "planting high speed" (5) position. The main shift lever 51 is in the neutral position N
, The vehicle is operated rearward to the first forward speed F1 and the reverse speed B position, and forwardly operated to the second forward speed F2 position.

In power transmission, the drive shaft 20 is rotated by the driving of the engine 7. The tension pulley 22 is tensioned to the belt 23 so that the main clutch is engaged, and the belt 25 is tensioned by the tension pulley 27, or the belt 26 is tensioned by the tension pulley 28 to rotate the transmission shaft 24 from the counter shaft 21. Then, the front wheel 4 and the rear wheel 5 are transmitted through the main transmission, and the lateral movement of the power take-out shaft 9 and the seedling tank 14 of the seedling planting device 2, the seedling feeding device, and the planting device via the planting clutch.
15 and the like are transmitted, and the seedling planting operation by the planting device 15 is performed on the leveled soil surface while the float 16 slides on the ground while traveling.

Regarding the operation of the operation lever 12, if the operation lever 12 is set to "up" (1) at the rear end of the lever guide 11, as shown in FIGS. 3 to 5 and FIG. When the low-speed arm 42 is rotated, the pulley 28 is pressed against the belt 26 and the low-speed pulley 30 is rotated to transmit a low speed, the running speed is reduced, and the planting arm D is rotated by the planting cam D. , The planting clutch is disconnected via the wire 50,
Seedling action is stopped, and depending on the lifting cam A,
The elevating arm 41 is rotated, the elevating control valve is switched to the elevating position via the wire 43, and the seedling plant 2 is raised by the elevating cylinder 18 to the height of the non-working position. Therefore, the vehicle body 1 is in a state of performing only traveling at a low speed.

When the operating lever 12 is moved to the “fixed” (2) position,
In conjunction with the above, the elevation control valve by the elevation arm 41 is switched from the elevation to the neutral position, and the height of the seedling plant 2 immediately before the switching (for example, the “elevation” (1)
In this case, the position is raised to the non-working position), and the seedling plant 2 is neither lowered nor raised any more. Such a state is operated when only the running is performed without performing the pitching control and the rolling control by the float 16 of the seedling planting apparatus.

When the operation is moved to the "lower" (3) position, the seedling plant 2 is further lowered from the raising position by the raising and lowering control valve in the same manner. When the float 16 is grounded on the soil surface, the plant is ready for seedling planting.

When the operation is set to the position of "low planting speed" (4), the planting work is further performed in the same manner as the planting clutch by the planting cam D is engaged.

When the position is set to the "planting high speed" (5), the tension pulley 27 is tensioned by the belt 25, and the running speed is shifted to the high speed position by the rotation of the high speed pulley 29, and at the same time, the tension pulley 28 Leave 26. High-speed running and high-speed seedling planting are performed.

When the position is set to "high speed" (6), the planting clutch by the planting cam D is disengaged and the planting operation is not performed, and the plant runs at a high speed with the planting device lowered.

If the operation lever 12 is operated backward from the "high speed" (6) position, the operation interlock is performed in the reverse order of the above (1) → (6) (6) → (1).

In the lever guide 11 in the illustrated example, a fixing groove which can be locked by moving the operation lever 12 to the side so as to lock the front and rear movement of the operation lever 12 in the "fixed" (2). May be formed.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view of a seedling planter, FIG. 2 is a front view of an arrow II in FIG. 1, and FIG. 3 is an arrow III in FIG. The oblique view of the viewing part, FIG. 4 and FIG.
FIG. 6 is a perspective view showing an operation interlocking mechanism in a part of FIG.
7 is a side view showing the operation of the part viewed from the arrow VII in FIG. 6, FIG. 8 is a side view showing the operation of the part viewed from the arrow VIII in FIG. 6, FIG. The figure is an operation interlocking table showing the interlocking relation of each part of the operation lever, and FIG. 10 is a partially enlarged plan view. (Explanation of reference numerals) 2 ... Seedling plant, 12 ... Operation lever 19 ... Elevating device, 25 ... Belt 26 ... Belt, 27 ... Tension pulley 28 ... Tension pulley 31 ... Operation cam mechanism

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroyuki Niiyama 1 Togashi-cho, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. In-house Technical Department (72) Inventor Hideyuki Kusamoto 1 Tochi-cho, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.Examiner of the Technical Department Shoji Yamada (56) References −110218 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01C 11/02 330 A01C 11/02 322

Claims (1)

(57) [Claims] A single operating lever for operating a transmission for shifting the traveling speed, a planting clutch for turning on and off the transmission of the seedling planting device, and an elevating device for raising and lowering the seedling planting device, is provided with a single operating lever as compared with a cockpit. An operation device for a seedling plant, wherein the operation device is provided on the front side, and a high-speed operation position is set to a front side with respect to a low-speed operation position of the operation lever.