JPH04129725U - transplant machine - Google Patents

Abstract

(57) [Summary] (with amendments) [Structure] In a transplanter that performs horizontal control by installing a rolling hydraulic cylinder and a rolling hydraulic switching valve (43), the rotational input of the rolling sensor (22) is converted by a long hole. The direct-acting spool (52) of the rolling hydraulic pressure switching valve (43) is switched by the rolling hydraulic pressure switching valve (43). [Effect] The connection play between the sensor (22) and the spool (52) can be reduced and the connection structure can be simplified. For example, handling operations such as setting and adjusting the detection range of the rolling sensor (22) can be easily performed. This allows for easy simplification.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention, for example, makes the support height of the left and right wheels relative to the aircraft body different from each other to improve the planting area. This invention relates to a transplanter equipped with a rolling hydraulic cylinder that maintains the machine horizontally.

0002

[Conventional technology]

Conventionally, technology has been developed to automatically control rolling hydraulic cylinders by installing a rolling sensor. There was a trick.

0003

[Problem that the idea aims to solve]

The conventional technology supports a rolling sensor rotatably and has a direct-acting spool. If a rolling hydraulic switching valve is installed, the rotation of the sensor will be converted into the linear movement of the spool. Requires a plurality of links and rods to be converted, and the connection of said links and rods There are problems such as looseness is likely to occur in the joints, and it is not easy to simplify the connection structure. It was.

0004

[Means to solve the problem]

However, the present invention uses a rolling hydraulic cylinder and a rolling hydraulic switching valve. In a transplanter that performs horizontal control, the rotation input of the rolling sensor can be changed using a long hole. This is configured to switch the direct-acting spool of the rolling hydraulic switching valve. , it is easy to reduce the connection play between the sensor and the spool, and simplify the connection structure. For example, it is easy to handle, such as adjusting the detection range of the rolling sensor. This can be easily simplified.

[0005]

【Example】

Embodiments of the present invention will be described in detail below based on the drawings. Figure 1 shows the explanation of the rolling control section. 2 is a side view of the whole, and FIG. 3 is a plan view of the same. In the figure, (1) shows the engine, ( 2) is a transmission case, and (3) is a transmission case ( (4) is a planting case that is connected via the engine (1) and each case (5). 2) The bonnet that covers the upper side of the rice transplanting machine configured by (3) and (4), (6) is the front A spare seedling stand (7) is provided on the rear upper surface of the bonnet (5). The steering handle (8) is connected to the steering wheel (3), and the guide rail (8) is connected to the steering wheel (8). A seedling stand with a low front and a high rear, which is attached so as to be able to slide back and forth from side to side via the handles (9) and (10). 11) is a transverse feeder that is attached to the planting case (3) and drives the seedling platform (8) laterally. The shaft (12) is attached to the planting case (3) via the planting arm (13) to hold the seedlings. The planting claw (14) is used to take out one seedling from the platform (8) and plant it. A pair of left and right panels supported on the swing case (2) via the swing case (15) so that they can be raised and lowered. The paddy wheels (16) are attached to the swing case (15) (15) on the left and right swing wheels. The left and right paddy wheels (14) (14) can be connected at the same time via the wheels (17) (17). The vertical hydraulic system is a pitching cylinder that raises and lowers the rice transplanter by controlling entry and exit from the rice transplanter. The cylinder (18) is attached to the lower side of the engine (1) and each case (2), (3), and (4). Planting field leveling supported via front link (19) and planting depth lever (20) The leveling float (21) is used to adjust the height of the planting claw (12) before changing the planting depth of the seedlings. A pitching sensor (22) detects the elevation of the front part of the float (18); Arranged behind the paddy wheels (14) on both sides of the rear of the funnel (18) to the left and right sides of the rice transplanting machine. A flat sled plate-shaped rolling sensor that detects the slope of the road and levels the tracks (eliminating wheel marks). It is sa.

[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. The horizontal hydraulic cylinder ( 28), and the cylinder (28) is attached to the cylinder shaft (25) with a bracket (29). and rolling the piston rod (30) of the cylinder (28). It is connected to the adjustment shaft (26) via the arm (31), and is connected to the vertical hydraulic cylinder. The axes (25) and (26) are slidably displaced in the longitudinal direction of the fuselage by the control (16). , lift and lower the rice transplanting machine by pushing and pulling the left and right swing rods (17) (17) in the same direction. While keeping the seedling planting depth approximately constant, the horizontal hydraulic cylinder (28) control - Rotate the ring adjustment shaft (26) and change the left and right swing rods (17) (17). By pushing and pulling the rice transplanting machine in different directions, The structure is such that it is supported substantially horizontally.

[0007] 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, the lift lever, which is a swing hand control lever provided on the steering handle (7), The pitching sensor (21) is connected to the bar (38) via an arm (39). Then, the vertical hydraulic cylinder (16) is operated by manual operation of the vertical lever (38). It is configured to move.

[0008] 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.

[0009] As shown in FIGS. 6 and 7, the rolling hydraulic pressure switching valve (43) has a spool (5 2) The engagement part (52a) at the tip has a long hole (53), and the fulcrum of the receiving tube (46) An engagement arm (54) is fixed on one side centered on the shaft (45), and the elongated hole (53) The arm (54) is engaged and connected to the receiving tube (4) centered on the fulcrum shaft (45). 6) moves the spool (52) forward and backward through the arm (54). It performs the switching operation of the switching valve (43) and transmits the detection operation of the sensor (22). By directly connecting the spool (52) to the receiving tube (46), the receiving tube (46) ) and the spool (52) to eliminate looseness in the connection system and improve the sensitivity of the sensor (22). This is intended to improve the precision of this rolling control, and the rolling hydraulic cylinder ( 28) and a rolling hydraulic switching valve (43) for horizontal control. The rotation input of the rolling sensor (22) is converted by the elongated hole (53) and the rolling configured to switch the direct-acting spool (52) of the hydraulic pressure switching valve (43). It is.

0010 On the other hand, the rolling arm is aligned on a vertical line connecting the fulcrum shaft (45) of the receiving tube (46). The steering wheel (55) is erected and is provided on the panel plate (56) of the steering handle (7). Attach the rod (58) and swinging L-shaped link (5) to the rolling hand control lever (57). 9) - The rolling arm is connected via the rod (60) and handle arm (61). When the arm (55) is interlocked and the operating lever (57) is tilted to the left or right. The receiver tube (46) is forcibly swung up and down about the fulcrum shaft (45) to release the spool ( 52) as appropriate to vary the support height of each of the left and right wheels, making the aircraft idle. It is configured to tilt in stages. Note that (62) in the figure is the L-shaped link (59). ) is swingably supported on the fuselage side, and (63) in Fig. 3 is the planting clamp. The clutch lever (64) is the main clutch lever.

[0011] 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.

0012 During such work, tilt the hand control lever (57) to the right or left from the neutral position. When the cylinder is opened, the receiver (46) rotates clockwise or counterclockwise around the fulcrum shaft (45). The switching valve (43) swings up and down in the direction to make the spool (52) retract or advance. Change the support height of the right wheel (14) to small or large, or change the support height of the left wheel (14) to The aircraft is forced to tilt left and right by controlling the height to be large or small, resulting in ridges. Control using the sensor (22) alone is not enough to control the slope of the plowing platform. Even under conditions where the body is not kept horizontal, the lever (57) can be operated. The aircraft is forcibly tilted and held horizontally, regardless of the sensor (22), and the left and right sides are the same. This allows for planting work at a single planting depth. Therefore, the existing ridge as in the past This eliminates the need to install a lever and simplifies processing work at the ridge. In addition, the figure 1, the rolling hydraulic switching valve (43a) is connected to the L-shaped link (59). The rotation sprocket of the switching valve (43a) is caused by the rotation of the center of the link (59). It is also possible to have a configuration in which the control is switched as appropriate.

[0013] In addition, in the one shown in FIG. This is connected to the hydraulic pressure switching valve (43b), and is connected to the fixed support shaft (66) on the aircraft side. The above-mentioned cut is attached to the swing arm (65a) on one side of the valve link (65) which is rotatably mounted. While connecting the spool (52b) of the exchange valve (43b), the valve link (65) Connect the other side engagement arm (65b) to the front through the elongated hole (67) and the engagement arm (54a). The receiver tube (46) is engaged and connected to the recording receiver tube (46), and the receiver tube (46) is moved around the fulcrum shaft (45) as described above. When the valve swings up and down clockwise or counterclockwise, the spout is The valve (52b) is moved back and forth as appropriate to switch the switching valve (43b). There is an effect similar to that of the above-mentioned embodiment.

[0014]

[Effect of the idea]

As is clear from the above embodiments, the present invention is a rolling hydraulic cylinder (28). In addition, in a transplanting machine that is provided with a rolling hydraulic switching valve (43) and performs horizontal control, The rotation input of the rolling sensor (22) is converted using the long holes (53) and (67) to generate the rolling sensor. to switch the direct drive type spool (52) (52b) of the hydraulic pressure switching valve (43). The connection play between the sensor (22) and the spool (52) (52b) For example, the above-mentioned roller simplifies handling operations such as adjusting the detection range of the sensing sensor (22). It is something that can be achieved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a rolling control section.

[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 is an explanatory diagram of a rolling switching valve section.

FIG. 7 is an explanatory diagram.

FIG. 8 is an explanatory diagram showing another example of a modified structure.

[Explanation of symbols]

(22) Rolling sensor (28) Hydraulic cylinder for rolling (43) (43a) (43b) Rolling hydraulic pressure switching valve (52) (52b) Spool (53) (67) Long hole

──────────────────────────────────────────────── ─── 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] In a transplanter that is equipped with a rolling hydraulic cylinder and a rolling hydraulic switching valve to perform horizontal control, the rotational input of the rolling sensor is converted by a long hole to switch the direct-acting spool of the rolling hydraulic switching valve. A transplant machine characterized by the following configurations.