JPH04117519U - rice transplanter - Google Patents

Abstract

(57) [Summary] (with amendments) [Structure] Includes a locking member (32) that prevents the rolling control operation of the horizontal hydraulic cylinder (28), and the locking member (32)
In addition, the horizontal hydraulic cylinder (28) and the hydraulic unit case (34) are arranged symmetrically around the vertical hydraulic cylinder (16) in the center of the fuselage. . [Effect] Even if a control signal to operate the horizontal hydraulic cylinder (28) is generated, such as when the rolling sensor (22) collides with an obstacle, malfunction of the horizontal hydraulic cylinder (28) can be prevented, and the While loading and unloading the aircraft and driving on the road can be performed more safely than before, it is also possible to perform stable rolling control by reducing the movement of the center of gravity of the aircraft.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention consists of a vertical hydraulic cylinder that raises and lowers the rice transplanter, and a hydraulic cylinder that tilts the rice transplanter to the left and right. The present invention relates to a rice transplanter equipped with a horizontal hydraulic cylinder.

0002

[Conventional technology]

Conventionally, as shown in Japanese Patent Application Laid-Open No. 52-131823, a pair of left and right rolling sets has been used. The rice transplanter detects the left and right inclination of the rice transplanter and horizontally supports the rice transplanter against the planting field. He had the technology to do so.

0003

[Problem that the idea aims to solve]

The above-mentioned conventional technology prevents the rice-transplanting machine from changing direction at the edge of a ridge or when driving on the road. By lifting up the rolling sensor, the centrifugal force during turning will activate the rolling sensor. There was a problem with the rice transplanting machine tilting.

0004

[Means to solve the problem]

However, the present invention improves the rice transplanter by adjusting the support height of the left and right running wheels relative to the rice transplanter body. In equipment equipped with a horizontal hydraulic cylinder that keeps the body approximately horizontal, the horizontal hydraulic cylinder The locking member prevents the rolling control operation of the roller. In addition to configuring it to stop the rolling control operation, the vertical hydraulic cylinder in the center of the aircraft Horizontal hydraulic cylinders and hydraulic unit cases are arranged symmetrically around the center. This allows the rice-transplanting machine to stay in the left-right direction even when changing direction at the edge of a ridge during rice-transplanting work. This prevents the rice transplanter from tipping over, allows the rice transplanter to be moved safely while being lifted, and also allows the rice transplanter to be moved safely while being lifted. When the ring sensor collides with an obstacle, etc., the control signal that operates the horizontal hydraulic cylinder is Even if this occurs, malfunction of the horizontal hydraulic cylinder can be prevented, and damage to the truck bed can be prevented. While loading and unloading and driving on the road are safer and easier to handle than before, Good left-right balance of the aircraft with horizontal hydraulic cylinder and hydraulic unit case It is possible to maintain stable rolling control by reducing the movement of the center of gravity of the aircraft. It is.

[0005]

【Example】

Embodiments of the present invention will be described in detail below based on the drawings. Figure 1 is a hydraulic circuit diagram, and Figure 2 is a hydraulic circuit diagram. A side view of the row-type rice transplanter, Figure 3 is a plan view of the same, where (1) is the engine and (2) is the side view of the row type rice transplanter. The transmission case (3) is a transmission case (4) attached to the mission case (2). The planting case (5) is connected to the engine (1) and each case (2) ( 3) A bonnet that covers the upper side of the rice transplanting machine constituted by (4), (6) is the bonnet configured by the above bonnet. A spare seedling stand is installed on the rear upper surface of the net (5), and (7) is installed in the planting case (3). The steering handle (8) is connected to the guide rail (9) above the handle (7). ) (10) A seedling stand with a low front and a high rear that can be installed so as to be able to slide back and forth from side to side, (11) (1) is a transverse feed shaft that is attached to the planting case (3) and drives the seedling platform (8) in transverse feed; 2) is attached to the planting case (3) via the planting arm (13) to create a seedling stand (8). The planting claw (14) is used to take out and plant one seedling from the mission case ( 2) A pair of left and right paddy wheels that are supported so that they can be raised and lowered via a swing case (15) , (16) are the left and right swing rods (17) attached to the swing cases (15) (15). ) (17) to simultaneously control the entry and exit of the left and right paddy wheels (14) (14) A vertical hydraulic cylinder (18) is the engine (1) that raises and lowers the rice transplanting machine. and front link (19) and planting depth lever on the bottom of each case (2) (3) (4) (20) is a leveling float for leveling the planted rice field that is supported through the Detecting the rise and fall of the front part of the float (18) due to changes in the planting depth of the seedlings of the claw (12). The pitching sensor (22) is located on both sides of the rear of the float (18) and is connected to the paddy wheel (22). 14) It is installed at the rear to detect the inclination of the rice transplanter in the left and right direction and to level the ruts (eliminating wheel marks). This is a rolling sensor in the form of a flat sled plate.

[0006] As shown in FIGS. 4 and 5, the transmission case (2) is attached to the vehicle body frame (23). ) The engine (1) is connected and supported through the body frame (23), and the above-mentioned upper and lower At the same time, the piston rod of the cylinder (16) is installed. The middle of the pitching adjustment cylinder shaft (25) is connected and fixed to the tip of the rod (24). and before The intermediate portion of the rolling adjustment shaft (26) is rotatably inserted into the recording cylinder shaft (25), and the The left and right swing rods (17) (17) are adjusted by rotating the -ring adjustment shaft (26). Arms (27) (27) are connected to both ends of the shaft (26) so that the push and pull directions are reversed. and connect the tips of each swing rod (17) (17), and connect the left and right sides of the rice transplanting machine. A horizontal hydraulic cylinder (28) is provided to correct the inclination and keep it approximately horizontal, and the cylinder (28) is attached to the cylinder shaft (25) via the bracket (29), and The piston rod (30) of the arm (28) is attached to the rolling adjustment shaft (26). 1), and each of the above is controlled by a vertical hydraulic cylinder (16). The shafts (25) and (26) are slid in the longitudinal direction of the aircraft, and the left and right swing rods (17 ) (17) in the same direction to raise and lower the rice transplanting machine, keeping the seedling planting depth approximately constant. Meanwhile, the rolling adjustment shaft (26) is rotated by controlling the horizontal hydraulic cylinder (28). the left and right wheels by pushing and pulling the left and right swing rods (17) (17) in different directions. (14) The support height of (14) is different, and the rice transplanting machine is constructed to be supported approximately horizontally. has been completed.

[0007] In addition, a rolling ring which is a locking member for engaging and disengaging the pitching adjustment cylinder shaft (25) is also provided. Place the rolling regulation pin (32) on the rolling adjustment shaft (26) side through the guide plate (33). Attach the horizontal hydraulic system by engaging each shaft (25) and (26) with the pin (32). The cylinder (28) is configured to stop its operation.

[0008] Furthermore, a hydraulic unit case ( 34), and the unit case (34) is one of the mission cases (2). A connecting rod (35) and a link are fixedly installed on the side and contract by a pressing force exceeding the setting. The pitching sensor is connected to the unit case (34) through the links (36) and (37). The pitching sensor (21) is connected to the leveling float (1). 8) Detects the lifting movement of the front part and automatically operates the vertical hydraulic cylinder (16). On the other hand, an arm (39) is attached to the lift lever (38) provided on the steering handle (7). The pitching sensor (21) is connected to the lift lever (38) via the The vertical hydraulic cylinder (16) is configured to be operated by manual operation.

[0009] Also, as is clear from Figure 4, there is a vertical hydraulic cylinder (16 ), the horizontal hydraulic cylinder (28) and the hydraulic unit case (34) are arranged in left and right pairs. It is arranged according to the name.

0010 Next, the rolling sensor sets the lowest descending position using the descending regulation stopper (40). The left and right rolling sensor arms (41) (41) are equipped with a sa arm (41). Rolling sensors (22) (22) on the left and right rear end are installed and fixed in series, respectively, and the front Left and right rolling sensors are installed on the bearing body (42) installed on the upper rear side of the transmission case (4). The front ends of the arms (41) and (41) are independently rotatably supported. Also the horizontal It is equipped with a rolling hydraulic pressure switching valve (43) for controlling the operation of the hydraulic cylinder (28), The switching valve (43) is mounted on the stand frame (43) on the rear upper side of the mission case (2). 4), and a rolling fulcrum shaft (4) is fixed to the platform frame (44). 5) to support the middle of the receiver tube (46), and swingably move the receiver tube (46) in the left-right direction of the machine. 46) is placed horizontally, and both ends of the core shaft (47) are rotatably inserted into this receiving tube (46). The base end of the input link (48) (48) is fixedly connected to the rolling sensor arm (48). 1) and the input link (48) are connected to the rod (50). ), each member (22) (41) (46) (47) (48) (49) The arm (49) and the plant are formed symmetrically around the fulcrum shaft (45). A ground holding spring (51) is stretched between the attached case (3) and the springs are installed symmetrically. (51) The left and right rolling sensors (22) (22) are planted in the field using (51). At the same time, the left and right rolling sensors (22) are brought into contact with the same surface at the same time. When moving up and down in the direction, the left and right input links (48) (48) move around the core axis (47). While the rolling hydraulic pressure switching valve (43) is kept neutral by swinging, the left and right rolling hydraulic pressure switching valves (43) are If the sensor (22) (22) is raised or lowered in different directions or only one of them is Due to the difference in the amount of swing between the left and right links (49), the rolling fulcrum shaft (4) 5) to swing the receiver cylinder (46) and operate the rolling hydraulic pressure switching valve (43). The horizontal hydraulic cylinder (28) is also drive-controlled.

[0011] As shown in FIGS. 1 and 6, the tip of the rolling regulating pin (32) can be moved in and out. A locking hole (52) to be engaged is formed in the rolling regulating plate (53), and the rolling regulating plate (53) is A pitch regulating plate (53) is fixed to the pitching adjustment cylinder shaft (25), and An engagement guide surface (54) that guides the tip of the lock (32) into the locking hole (52) by abutting it. It is formed on the regulating plate (53), and the The pin (32) is configured to abut against the engagement guide surface (54).

0012 Additionally, a rolling regulating spring ( 55) and drive control of the seedling stand (8) and planting claws (12) as shown in Figure 3. Attach the planting clutch arm (56) that controls the planting to the planting case (3), as shown in Figure 2. The planting clutch lever (which is the planting clutch operating member provided on the steering handle (7) 57) to which the planting clutch arm (56) is connected. Connect the rolling control pin (32) to the tilter (57) with a wire (58). , from the rolling regulating plate (53) when the lever (57) is operated to engage the planting clutch. Pull out the rolling regulation pin (32) and place it on the pitching adjustment cylinder shaft (25). The planting clamp of the lever (57) By the cutting operation, the pin (32) is locked to the regulation plate (53), and each of the shafts (2 5) (26) is configured to be integrally connected to stop the rolling control operation. There is.

[0013] The present invention is constructed as described above, and the seedling stand (8) is moved back and forth from side to side. Seedlings are taken out one by one from the seedling stand (8) using the planting claw (12) and planted. Then, operate the vertical lever (38) to operate the vertical hydraulic cylinder (16), and In addition to raising and lowering the planting machine to change direction at the edge of the ridge, it is also used to respond to changes in the unevenness of the tiller. As the front part of the float (18) moves up and down, the pitching sensor (21) ) moves up and down, the vertical hydraulic cylinder (16) operates, and the rice transplanter moves up and down, leveling the rice transplanter. The ground pressure of the funnel (18) is maintained approximately constant, and the seedling planting depth of the planting claw (12) is maintained approximately constant. Keep it. In addition, the rice transplanting machine tilts from side to side due to changes in the unevenness of the tiller, etc. The left and right rolling sensors (22) (22) move in different directions or in either direction. Only one side moves up and down, and the horizontal hydraulic cylinder (28) operates to move the rice transplanter to the left and right. The rice transplanter is tilted to keep the rice transplanting machine approximately horizontal with respect to the planting field.

[0014] Furthermore, during rice planting work or while driving on the road, the planting clutch lever - By disengaging the planting clutch with (57), the rolling regulation spring (5 5), insert the rolling regulating pin (32) into the locking hole of the rolling regulating plate (53). (52) to control the rolling control operation by the horizontal hydraulic cylinder (28). The rolling control is stopped mechanically, so hydraulic pressure is used. Compared to the structure where the rice transplanter is used, there is no risk of the rice transplanter body tilting due to hydraulic leakage.

[0015] Furthermore, FIG. 7 shows another embodiment, in which the hydraulic unit case (34) is equipped with The hydraulic pump (59) is connected to the horizontal hydraulic cylinder (28) by rolling hydraulic switching valve. (43) and communicates with the cylinder (28) and the switching valve (43). Stop valves (60) and (61) are connected between the cylinder (28) and the switching valve (4). 3) configured to be connected in communication or closed state by stop valves (60) and (61); There is. Also, a spring (62) is installed to switch and support the stop valves (60) and (61) in the open state. At the same time, the spools (63) of the stop valves (60) and (61) are connected to the planting clutch. By connecting the lever (57) and disengaging the planting clutch of the lever (57), In conjunction with this, the stop valves (60) and (61) are switched to the closed state, and the seedling stand (8) and When the planting claw (12) is stopped, the roller of the rolling hydraulic cylinder (28) While stopping the planting control operation, the planting clutch is engaged by operating the lever (57). This is to start the rolling control operation of the switch valve (43), and to neutrally support the switching valve (43). Compared to a structure in which the rolling control operation is stopped by the neutral To prevent the support height of the left and right running wheels (14) from changing due to oil pressure leakage at certain positions. This prevents the rice transplanter from tilting to the left or right.

[0016] Furthermore, FIG. 8 shows another embodiment, in which the rolling regulating plate (53) is attached to the receiving tube ( 46) and the rolling control pin (32) to the base frame (44) on the guide plate. (33), and as in the above embodiment, the planting clutch lever (57) The pin (32) is engaged with the regulation plate (53) by the cutting operation, and the receiving tube (46) is fixedly supported. The left and right rolling sensor (22) stops the aircraft tilt detection operation, and the horizontal hydraulic pressure is This interrupts the rolling control operation of the cylinder (28).

[0017]

[Effect of the idea]

As is clear from the above embodiments, the present invention provides left and right running wheels (14) (1) for the rice transplanting machine. 4) Equipped with a horizontal hydraulic cylinder (28) that adjusts the support height and keeps the rice transplanting machine approximately horizontal. In the device installed, there is a lock that prevents the rolling control operation of the horizontal hydraulic cylinder (28). The lock member (32), (60), and (61) prevent rolling. It is configured to stop the control operation, and the vertical hydraulic cylinder (16) in the center of the aircraft is The horizontal hydraulic cylinder (28) and hydraulic unit case (34) are arranged symmetrically. This allows the rice-transplanting machine to stay in the left-right direction even when changing direction at the edge of a ridge during rice-transplanting work. This prevents the rice transplanter from tipping over, allowing the rice transplanter to be moved safely while being lifted up, as well as lowering the rice transplanter. When the ring sensor (22) collides with an obstacle, etc., the horizontal hydraulic cylinder (28) is restricted. Even if a control signal is generated, the horizontal hydraulic cylinder (28) can be prevented from malfunctioning, and the It is safer and easier to load and unload onto the dock as well as drive on the road than before. While the horizontal hydraulic cylinder (28) and hydraulic unit case (34) This allows you to maintain good left-right balance of the aircraft, reducing the movement of the center of gravity of the aircraft and making it more stable. This allows rolling control to be performed.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts showing an embodiment of the present invention.

[Fig. 2] Overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a partially enlarged plan view.

FIG. 5 is a side view of the same.

[Fig. 6] Rear view of main parts.

FIG. 7 is a hydraulic system diagram showing another embodiment.

FIG. 8 is a plan view of main parts showing another embodiment.

[Explanation of symbols]

(14) Running wheel (16) Hydraulic cylinder for up and down (28) Horizontal hydraulic cylinder (32) Rolling control pin (lock member) (34) Hydraulic unit case (60) (61) Stop valve (lock member)

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Hiroshi Takahashi 1-32 Chayamachi, Kita-ku, Osaka Yanmar Agricultural Machinery Inside the corporation

Claims (1)

[Scope of utility model registration request] Claim 1: A device equipped with a horizontal hydraulic cylinder that keeps the rice transplanting machine substantially horizontal by adjusting the support height of left and right running wheels relative to the rice transplanting machine, comprising a locking member that prevents the rolling control operation of the horizontal hydraulic cylinder. A rice transplanter comprising: a locking member to stop the rolling control operation; and a horizontal hydraulic cylinder and a hydraulic unit case arranged symmetrically around a vertical hydraulic cylinder at the center of the machine. .