JP2554291Y2 - Riding rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a riding rice transplanter in which a planting portion is mounted on a traveling vehicle so as to be able to move up and down via a hydraulic cylinder and a link mechanism, for example.

`` Conventional technology '' Conventionally, Japanese Utility Model Application Laid-Open No. 62-60111, or JP-A-2-119703
As shown in the publication, the planting portion is attached to the traveling vehicle via the top link and the lower link so as to be able to move up and down, and the hitch of the machine is connected to the interval between each axis of the front link and the front end of the lower link to be connected to the traveling vehicle. The upper link and the lower link shaft at the rear end of the top link and the lower link to be formed are formed at substantially equal intervals, the top link and the lower link are extended substantially in parallel, and the planting hitch is connected to the machine hitch via the upper and lower hitch shafts. There is a technique for attaching a planting portion via a pivot shaft at a lower end portion of the planting hitch.

[Problem to be Solved by the Invention] The prior art does not provide an upward opening notch and a rearward opening notch vertically at the rear of the top link and the lower link. Since the mounting of the planting portion cannot be easily performed by one worker and the upper and lower hitch shafts are not locked, the left and right swing of the planting hitch side cannot be easily controlled, and the lower link is not provided. Since the hitch hook is not mounted on the shaft, there is a problem that the mounting structure of the hitch hook cannot be easily simplified.

[Means for Solving the Problems] However, in the present invention, the planting portion is attached to the traveling vehicle so as to be able to move up and down via the top link and the lower link, and each of the top link and the front end of the lower link to be connected to the traveling vehicle. The distance between the shafts and the upper and lower link shafts at the rear end of the top link and the lower link connecting the hitch of this machine are formed substantially equal, and the top link and lower link are extended almost in parallel. In a riding rice transplanter in which a planting hitch is connected via a shaft and a planting portion is mounted via a pivot point at the lower end of the planting hitch, an upward opening notch on the upper end of the hitch and a rearward opening on the lower end of the hitch. The notch is engaged with the upper and lower hitch shafts of the planted hitch, the upward opening notch is disposed substantially directly above the upper link shaft, and the rearward upward and obliquely upward with respect to the lower link shaft. An opening notch is provided, and a hitch hook engaged with the lower hitch shaft is rotatably supported on the lower link shaft.

[Operation] Accordingly, since the upper and lower hitch shafts are engaged with the upward opening notch and the rearward opening notch, it is possible to easily mount the planting portion by each operation of moving the vehicle backward and raising the lower link by one person. By locking the opening notch and the upper and lower hitch shafts, the left and right swing of the planting hitch side can be easily regulated, and the planting part can be easily prevented from becoming in an unstable posture due to lateral swing etc. at the time of attachment and detachment. At the same time, since the hitch hook is attached using the lower link shaft of the lower link, the hitch hook installation structure can be simplified and the hitch hook installation strength can be easily ensured. The connection strength can be easily improved.

"Example" Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a main part, FIG. 2 is a side view of a riding rice transplanter, and FIG. 3 is a plan view of the same. In FIG. 1, (1) is a traveling vehicle on which an operator rides, and an engine ( The rear end of the body frame (3), which is a traveling body on which the vehicle is mounted, is connected to the transmission case (4). Front wheels for paddy field traveling are provided on both front sides of the transmission case (4) via the front axle case (5). In addition to supporting (6), the rear wheels (8) for traveling in paddy fields are supported on both rear sides of the transmission case (4) via transmission cases (7). And the engine (2)
A spare seedling mount (10) is attached to both sides of the outside of the bonnet (9), and the transmission case (7) and the like are covered with a body cover (12) forming a step (11). A driver's seat (13) is mounted on the upper part, and a steering handle (14) is provided in front of the driver's seat (13) and behind the hood (9).

Further, (15) in the figure is a planting section which is a farm work machine having a seedling mounting table (16) for multiple planting and a plurality of planting claws (17). Rotary case (16), which supports the seedling mounting table (16) of the type with a planting case (20) via a guide rail (18) and a guide rail (19) so as to be reciprocally slidable left and right, and rotates at a constant speed in one direction. 21) is supported by the planting case (20), and a pair of planting claw cases (22) and (22) are disposed at symmetrical positions about the rotation axis of the case (21). 22) Attach the planting claw (17) to the tip, and rotate the rotary case (21) once to rotate the two planting claws (1).
7) (17) is alternately moved to plant two seedlings.

A pivot (23) is provided on the front side of the planting case (20).
A planting hitch (24) is provided via a top link (25)
Hitch (24) planted on the rear side of the traveling vehicle (1) via a three-point link mechanism (27) including the left and right lower links (26) and (26)
And the planting section (1) is connected via the link mechanism (27).
A hydraulic cylinder (28) for raising and lowering the 5) is provided. The front and rear wheels (6) and (8) are driven to move at a substantially constant speed and at the same time reciprocally slide right and left. A portion of the seedlings is taken out by the planting claws (17), and the planting operation is performed continuously.

In the figure, (29) is a traveling speed change lever, (30) is a planting elevating lever, (31) is a planting sensitivity adjusting lever, (32) is a traveling clutch pedal, (33) and (33) are left and right brake pedals, ( Are floats for flattening the rice field, and support the floats (34) below the planting case (20) via a planting depth adjusting link (35) and the like.

As shown in FIGS. 4 and 5, the hydraulic cylinder (2
8) The tip of the piston rod (36) is connected to the left and right lift arms (39) (39) and the left and right lift rods (40) (40) via the pivot plate (37) and the lift shaft (38). Gate frame (41) between the upper part of the rear end of the body frame (3)
The lower link (26) (2) via the shaft (42) (42)
6) and the base ends of the lift arms (39) and (39) are swingably supported, and the front end is attached to the body frame (3).
Further, the cylinder (28) body is attached between the left and right inner frames (43) (43) having a low front and rear height to fix the rear end to the upper end of the gate-shaped frame (41).
8) is configured to be rotatable around the shaft (44) on the inner frames (43) and (43) and resiliently supported via a spring (45).

Further, as shown in FIGS. 1, 4 to 6, a hitch (46) for connecting the rear ends of the top link (25) and the lower link (26) is provided. The left and right struts (47) and (47), the lower hitch plates (48) and (48) fixed to the outside of the lower ends of the struts (47) and (47), and the horizontal pipe (49) between the upper ends of the struts (47) and (47) ) And the top hitch plate (50) to be fixed via the hitch (4)
6).

The top link (25) includes a base link (52) provided with a pitching motor (51) and a pair of left and right rectangular long plate-like left and right plate-like frames (53) and (53). The front end of the frame (53) is connected to the rear end of the link (52) via a screw shaft (54) that rotates forward and reverse by (51), and the top link (25) extends and contracts the entire length, and the inner frame (43) Shaft at the rear end (55)
The front end of the base link (52) is connected via a shaft, the rear end of the plate-like frame (53) is connected to the top hitch plate (50) via a shaft (56), and the rear end of the top link (25) is connected to each other. Frames (53) and (53) are formed so as to be divided into two parts on the left and right sides to increase the bending rigidity in the vertical direction and to prevent the top link (25) from being bent vertically.

The lower hitch plate (48) is connected to the rear end of the lower link (26) for fixing the rear end of the lift rod (40) via a shaft (57), and the middle of the left lift rod (40) and the support ( 47) Connect the absorber (58) with the middle.

Further, a tubular body (59) supporting the rotation fulcrum shaft (23) is fixed to a lower end of the planting hitch (24), and upper and lower hitch shafts (60) and (61) are mounted on upper and lower ends of the planting hitch (24). At the same time, the upper hitch shaft (60) is engaged with the upward opening notch (62) of the top hitch plate (50) from above, and the lower hitch shaft (6) is inserted into the rear opening notch (63) of the lower hitch plate (48).
1) is to be engaged from behind, and the shafts (56) (5)
Position the upper hitch axis (60) near the line connecting 7)
The upper hitch shaft (60) is installed in front of the lower hitch shaft (61), the upper hitch shaft (60) is provided in front of the planting hitch (24), and the upper hitch shaft (60) and the notch (62) are disengaged. Is configured to be easily confirmed.

Also, the left and right hitch hooks (64) and (64) to be engaged with the lower hitch shaft (61) are supported on the shaft (57) at the rear end of the lower link (26), and the left and right hitch hooks (64) are )
(64) and the right hitch hook (64)
A hook lever (66) is integrally connected to the body, and a hook lever (66) is extended forward of the fuselage between the left and right lower links (26) (26). A hook for engaging and disengaging the hitch hook (64) The lever (66) is provided substantially parallel to the lower link (26) in plan view, and the hook lever (66) is disposed between the left and right lower links (26) (26).

A spring (67) for engaging and supporting the hitch hook (64) is provided on the lower hitch shaft (61), and is connected to the hook lever (66) via the pin (68) and the notches (69) (70). A lock lever (71) is provided and the right lower hitch plate (4
8) Attach the lock lever (71) to the shaft (72) via the shaft (72).
The notch (69) (70) of the lock lever (71) is engaged and supported by the pin (68) of the hook lever (66) by the spring (73), and the hook lever (66) is engaged by the lock lever (71). Or, it is fixed and supported at the release position. After releasing the engagement of the lock lever (71), the hook lever (66)
And release the hitch hook (64) to the lower hitch shaft (61).
Is configured to be disengaged. As is clear from the above, the planting section (15) is attached to the traveling vehicle (1) via the top link (25) and the lower link (26) so as to be able to move up and down, and is connected to the traveling vehicle (1). (twenty five)
And the top link (25) that connects the pitch between the shafts (55) and (42) at the front end of the lower link (26) and the hitch (46).
And lower link (26), upper and lower link shafts at the rear end (56)
(57) are formed at substantially equal intervals, the top link (25) and the lower link (26) are extended substantially in parallel, and the machine hitch (46) is connected to the upper and lower hitch shafts (60) and (61). In a riding rice transplanter in which the planting hitch (24) is connected and the planting section (15) is mounted via the pivot (23) at the lower end of the planting hitch (24), the upper end of the machine hitch (46) The upper and lower hitch shafts (60) and (61) of the planting hitch (24) are engaged with the upward opening notch (62) on the side and the rearward opening notch (63) on the lower end side, and almost directly above the upper link shaft (56). The upper opening notch (62) is disposed on the lower link shaft (57), and the rear opening notch (63) is disposed obliquely rearward and upward with respect to the lower link shaft (57), and is engaged with the lower hitch shaft (61). A hitch hook (64) is rotatably supported on the lower link shaft (57). Then, the upper and lower hitch shafts (60) and (61) are engaged with the upward opening notch (62) and the rearward opening notch (63), and the traveling vehicle (1) is moved backward and the lower link (26) is planted by each operation. The part (15) can be installed by one person, and the left and right swing of the planting hitch (24) side is restricted by the locking of the upper and lower opening notches (62) (63) and the upper and lower hitch shafts (60) (61). In addition to preventing the planting part (15) from becoming in an unstable posture due to lateral sway, etc. at the time of attachment / detachment, etc., the lower link shaft (57) of the lower link (26) is used for the hitch hook (6).
4) By attaching the hitch hook (64), it is possible to simplify the mounting structure and secure the installation strength of the hitch hook (64). The hitch hook (64) connects the hitch (46) to the plant hitch (24). It is configured to improve strength.

Further, as shown in FIG. 1, FIG. 3, FIG. 6, and FIG.
(74), and a pair of left and right markers (74) (74) are disposed on both sides of the planting part (15) so as to be able to undulate. The markers are attached to the side bumper mounting frame (75) via the shaft (76). (7
4) The base end is rotatably mounted, and the middle of the marker lifting link (77) is rotatably provided on the planting hitch (24) via the shaft (78), and the link (77) has a roller (79) at one end. ) The other end is connected to the base end of the marker (74) via a lifting wire (80), and the lifting link (77) is brought into contact with the stopper (81) of the hitch (24) to lower the marker (74). The marker (74) is configured to land on the rice field surface.

Further, the cam (82) contacting the roller (79) is
A marker pull-up link (83) is formed on one end side of the link (83), and the middle of the link (83) is rotatably supported on the shaft (56), and a marker pull-up body is pulled up at the other end of the link (83). The upper end of the rod (84) is connected so as to be adjustable in length, and is fixed to the plate (86), which is integrally fixed to the lower link (26) via a pipe (85), via a pin (87) and a slot (88). Connect the lower end of the rod (84).

Then, the rear side of the top link (25) is formed into two parts by the left and right plate-like frames (53) and (53), and the pull-up link (83) and the rod (84) forming the marker pull-up mechanism (89) are placed on top. Each frame (53) of the link (25)
(53), and the pulling rod (5) is connected to a straight line connecting each axis (56) (57) which is a connection point between the planting portion (15) and the top link (25) and the lower link (26). 84)
When the planted part (15) is lifted, the hitch (24) (46) also rises and the lifting rod (84)
The parallel link operates, the rod (84) is pulled down, the lifting link (83) rotates to move the cam (82) backward, and the cam (82) pushes down the roller (79),
The lifting wire (80) is pulled by rotating the lifting link (77), the marker (74) is pulled up and raised to the raised position, and the marker (74) lifted in conjunction with the lifting operation of the planting section (15) The cam (82) is formed so that the pulling speed of the pulling is slower in the initial pulling period (B) and the final pulling period (C) than in the midway of the pulling (A), and the lifting link (77) and the lifting link (8) are formed.
3) Change in link ratio is increased at the beginning (B) and at the end (C)
And the movement of the marker (74) at this time becomes slow.

In addition, a lift maintaining lever (91) for contacting the shaft (90) of the roller (79) is provided, and the lever (91) is rotatably provided on the support (47) via a shaft (92). A stopper (93) is formed on the lever (91), and the lever (91) is swung within a certain range. The wire (94) which is pulled by the marker lowering operation of the planting elevating lever (30) is connected to the holding lever. (91), and when the cam (82) retracts to the front of the fuselage due to the lowering of the planting portion (15), pull the wire (94) to retract the maintenance lever (91) to the front of the fuselage to maintain The lock of the lifting link (77) is released by the contact between the lever (91) and the shaft (90), and the marker (74) is lowered.

Note that the pair of left and right maintenance levers (91) and (91) are selectively retreated by operating the elevating lever (30), and lower only the left and right markers (74) and (74) that are not yet planted. It is configured as follows.

Further, as shown in FIG. 2, FIG. 3 and FIG. 8, weights (95) (95) are provided on the outside of the step (11) on both sides of the bonnet (9) at substantially the same height as the step (11) and substantially in parallel. When the planting section (15) is installed, the traveling vehicle (1) is maintained in the front-rear balance. When the planting section (15) is removed, the weight (95) is attached to the upper and lower rods (96). ) (97) and the notches (62) and (63) of the machine hitch (46) are locked with the rods (96) and (97), and the weight (95) is fitted to the machine hitch (46). It is configured to maintain the front-rear balance of the traveling vehicle (1) when the mounting and planting portion (15) is removed.

In the above embodiment, the marker pulling rod (8
Provide a wire in place of 4) and use the marker pull-up link (83)
The plate (86) and the plate (86) can be easily connected by a wire.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides a vehicle (1) via a top link (25) and a lower link (26).
The planting part (15) is attached to the vehicle so as to be able to move up and down, and the distance between the shafts (55) and (42) at the front end of the top link (25) and the lower link (26) and the hitch of this machine The top link (25) connecting the (46) and the lower link (26) are formed at substantially equal intervals between the upper and lower link shafts (56) (57) at the rear end, and the top link (25) and the lower link (26) are formed. The planting hitch (24) is connected to the machine hitch (46) via the upper and lower hitch shafts (60) and (61). In the riding rice transplanter in which the planting section (15) is mounted via (23), the planting hitch (62) and the rear opening notch (63) on the upper end side of the hitch (46) of the machine are planted with the planting hitch (63). twenty four)
The upper notch shaft (60) (61) is engaged with the upper link shaft (56), and the upward opening notch (62) is disposed substantially directly above the upper link shaft (56). The rearward opening notch (63) is disposed above, and a hitch hook (64) to be locked to the lower hitch shaft (61) is rotatably supported by the lower link shaft (57). Since the upper and lower hitch shafts (60) and (61) are engaged with the upward opening notch (62) and the rearward opening notch (63), the planting section is formed by each operation of the backward movement of the traveling vehicle (1) and the lower link (26). (15) can be easily installed by one person, and the upper and lower opening notches (62) and (63) and the upper and lower hitch shafts (6)
0) The left and right swing of the planting hitch (24) can be easily regulated by the locking of (61), and the planting part (15) can be easily placed in an unstable posture due to lateral sway etc. when attaching and detaching. The hitch hook (64) is attached using the lower link shaft (57) of the lower link (26).
4) The installation structure can be simplified and the installation strength of the hitch hook (64) can be easily secured. The hitch hook (64) improves the connection strength between the hitch (46) and the planting hitch (24). It can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view of a main part showing an embodiment of the present invention, FIG. 2 is an overall side view, FIG. 3 is a plan view of the same, FIG. 4 is a side view of a link mechanism, and FIG. FIG. 6 is a front view of FIG.
FIG. 7 is an explanatory view of the operation, and FIG. 8 is an explanatory view of weight attachment. (1)… traveling car (15)… planting part (25)… top link (26)… lower link (64)… hitch hook (66)… hook lever

Claims (1)

(57) [Scope of request for utility model registration] 1. A top link (25) and a lower link (2)
6) The planting part (15) is attached to the traveling vehicle (1) via the 6) so as to be able to move up and down, and the shaft (55) at the front end of the top link (25) and the lower link (26) connected to the traveling vehicle (1). )
The distance between the top link (25) and the lower link (26) connecting the hitch (46) and the vertical link shafts (56) (57) at the rear end of the machine are substantially equal to each other. 25) and the lower link (26) are extended substantially in parallel, and the planting hitch (24) is connected to the machine hitch (46) via the upper and lower hitch shafts (60) (61). 24) In a riding rice transplanter in which the planting portion (15) is mounted via the pivot shaft (23) at the lower end, an upward opening notch (62) at the upper end of the hitch (46) and a rearward opening at the lower end of the hitch (46). Top and bottom hitch axes (60) (61) of the hitch (24) planted in the notch (63)
And the upward opening notch (62) is disposed substantially directly above the upper link shaft (56), and the lower link shaft (57)
The rear opening notch (63) is disposed obliquely rearward and upward, and a hitch hook (64) to be locked to the lower hitch shaft (61) is rotatably supported on the lower link shaft (57). A riding rice transplanter characterized by having been made.