JPH0117932Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention connects a pair of upper and lower swinging links to the vehicle body in a removable and vertically swingable manner, and connects a seedling planting device to the swinging links to raise and lower the seedlings. At the same time, a stand is attached to the swinging link so that the seedling planting device and the swinging link can be supported on the ground in a constant relative attitude when the swinging link is detached from the vehicle body. Regarding rice transplanters.

In the above rice transplanter, when transporting or using the vehicle body as a tow vehicle for another work device, both swing links are removed from the vehicle body and the seedling planting device is supported separately from the vehicle body. It turns out. In order to support the seedling planting device in a state where it is removed from the vehicle body, a stand is attached to the swinging link so that the seedling planting device can be supported in a predetermined posture. This will prevent the seedling planting device from swinging upward, but in order to prevent this swing, conventionally, a connecting rod for regulating the swing of both swing links is attached and detached between both swing links. However, since the connecting rod for controlling the swing must be attached and detached each time, it is troublesome.

The present invention has been developed in view of the above-mentioned circumstances, and aims to prevent the above-mentioned swing links from upward swinging without requiring special operations. .

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a front engine 1, a clutch housing 2, and a transmission case 3 are connected to form a machine frame, and left and right front wheels 4, 4, which can be operated to change direction, are mounted below the engine 1. The left and right rear wheels 5, 5 are supported on both lateral sides of the transmission case 3, a driver's seat 6 is provided on the upper part of the transmission case 3, and the driver's seat 6 is protruded rearward from the rear wall of the transmission case 3. Eight pine-shaped seedlings W... are placed side by side in the rear of the tractor that supports the power take-off shaft 7, and the seedling platform 8 is moved horizontally back and forth at a constant stroke, the lower end of each pine-shaped seedling W... A seedling planting device 11 is provided, which is equipped with eight planting claws 9 that sequentially take out and plant seedlings one by one, floats 10 that are arranged side by side at appropriate intervals in the lateral direction, etc., and the machine advances. The structure is such that eight rows of seedlings are planted in sequence.

The seedling planting device 11 is connected to the vehicle body so as to be movable up and down by a pair of upper and lower swing links 12a and 12b which are connected to the vehicle body so as to be removable and swingable up and down, and to the rear end of the tractor. Hydraulic cylinder 1
3, a pair of left and right lift arms 14, 14 are provided which can be operated up and down, and a pair of left and right elastic telescopic connectors 15, 1 extend forward from the seedling planting device 11.
5 is removably connected to the lift arms 14, 14, thereby preventing the seedling planting device 11 from coming into contact with the ground in order to maintain a constant planting depth and when traveling on the road. Therefore, it is constructed so that it can be raised and lowered relative to the vehicle body.

Further, an input shaft 17 is supported in the planting mission case 16 of the seedling planting device 11 in a state of protruding forward, and the input shaft 17 is connected to the power extraction shaft 7 of the tractor. The seedling planting device 11 is connected to the seedling planting device 11 via a bendable and expandable shaft transmission mechanism 18 that is detachably connected thereto.
It is configured to be driven while allowing its elevation and descent.

The planting device 11 and the swinging links 12a, 1 when the seedling planting device 11 is lowered to the maximum lowering position.
2b, both swing links 12a, 12b are removed from the tractor, the coupling devices 15, 15 are removed from the lift arms 14, 14, and the shaft transmission mechanism 18 is removed from the power extraction shaft 7. At the same time, as shown in FIGS. 3 and 4, a first stand 19 is removably attached to the planting mission case 16 so that it can be supported on the ground, and is attached to the lower swing link 12b. The second stand 20 is removably attached, and furthermore, when the seedling planting device 11 is lowered to the maximum lowering position, the seedling planting device 1 of both the swinging links 12a, 12b
Stopper 2 that prevents upward swinging relative to 1
1 is provided so that the seedling planting device 11 and both swing links 12a and 12b, which have been removed from the vehicle body, can be supported separately from the vehicle body in a fixed relative posture.

To configure the stopper 21, a rod-like body 21b that engages into an engagement hole 21a formed in the lower swing link 12b as the seedling planting device 11 descends with respect to the vehicle body is inserted into the upper swing link 12a. A pin 21c that is fixed to the rod-shaped body 21b and comes into contact with the upper surface of the lower swing link 12b when the seedling planting device 11 is lowered to the maximum lowered position is set at an appropriate distance in the longitudinal direction of the rod-shaped body 21b. The lower swing link 12b is attached in a removable manner to the through holes 22 formed at intervals, and is separated from the tractor by the pin 21c and the portion a above the pin 21c of the rod-shaped body 21b. The seedling planting device 11 from a posture corresponding to the maximum lowered position of the seedling planting device 11 in
an interlocking member A capable of swinging the upper swinging link 12a detached from the tractor, which is in a posture corresponding to the maximum lowered position of the seedling planting device 11, upward in conjunction with the upward swinging of the seedling planting device 11; The rod-shaped body 21
At a portion b below the pin 21c of b, as the lower swing link 12b swings upward with respect to the seedling planting device 11 from a posture corresponding to the maximum lowered position of the seedling planting device 11. a contact member that contacts the lower surface side of the lower swing link 12b and prevents relative angular deformation between the upper and lower swing links 12a, 12b and the interlocking member A; A and the contact member b form a stopper 21 that prevents the vertically swinging links 12a and 12b from swinging upward relative to the seedling planting device 11 from the posture corresponding to the maximum lowered position of the seedling planting device 11. configure,
Furthermore, the stopper operating position can be changed and adjusted by replacing the pin 21c.

Further, a swinging arm 25 is swingably attached to the connecting tools 15, 15, and the free end of the swinging arm 25 is connected to the lower swinging link 12b.
15 with respect to the vertically swinging links 12a, 12b, and a connecting rod whose free end is removed from the downwardly swinging links 12a, 12b to regulate the maximum extension range of the connecting member 15. The connectors 15, 15 are configured to be able to be switched to a non-working position in which the device 11 is connected to the vehicle body 26, and the connectors 15, 15 can be held in a predetermined position when the seedling planting device 11 is removed from the vehicle body.

The structure of the stopper 21 may be various in addition to the structure described above. FIG. 5 shows an example of this, in which the vertical swing links 12a,
12b are pivotally connected by a link 23 as an interlocking member, and a contact member 24 for receiving the lower swinging link 12b is fixed to the seedling planting device 12 to constitute the stopper 21, When the seedling planting device 11 is lowered to the maximum lowered position, the contact member 24 comes into contact with the downward swinging link 12b, and the upward swinging of the downward swinging link 12b with respect to the seedling planting device 11 is prevented. The link 23 also prevents the upper swing link 12a from swinging.

Further, the present invention can be applied not only to structures in which the vertical swing links 12a and 12b are installed in the form of four parallel links, but also to structures in which the vertical swing links 12a and 12b are installed in the form of four scalene links.

In summary, in the rice transplanter according to the present invention having the above structure, the seedling planting device is moved from a position corresponding to the maximum lowered position of the seedling planting device 11 of the lower swing link 12b detached from the vehicle body. 11, an interlocking member A capable of swinging the upper swinging link 12a detached from the vehicle body, which is in a posture corresponding to the maximum lowered position of the seedling planting device 11, upward in conjunction with the upward swinging relative to the seedling planting device 11; 23, and as the swinging links 12a and 12b swing upward relative to the seedling planting device 11 from the posture corresponding to the maximum lowered position of the seedling planting device 11, the swinging links 12b abutting, the swinging links 12a, 12
abutting members b, 24 are provided to prevent relative angular deformation between the interlocking members A, 23 and the interlocking members A, 23, thereby preventing the two swing links 12a, 12b from swinging upward relative to the seedling planting device 11. The present invention is characterized in that a stopper 21 is configured to do so.

That is, in supporting the seedling planting device 11 and the swing links 12a and 12b, which have been lowered to the maximum lowered position, to the ground while maintaining a certain relative posture at that time, the seedling planting device 11 is lowered to the maximum lowered position. When lowered to the position, the vertical swinging links 12a, 12b are interlocked via the interlocking members A, 23, and at the same time, the swinging links 12 are brought into contact with the contact members b, 24.
The upward swinging of the seedling planting device 11 from the posture corresponding to the maximum lowered position of the seedling planting device 11 of a and 12b is prevented, and the swinging links 12a and 12b
Since the relative angular deformation between the and interlocking members A and 23 is prevented, when the seedling planting device 11 is lowered relative to the vehicle body in order to remove it from the vehicle body, the stopper 21 is automatically activated. It is possible to prevent the two swing links 12a, 12b from swinging upward relative to the seedling planting device 11 without requiring any special operation. The stopper 21 is operated when the seedling planting device 11 is lowered to the maximum lowering position, that is, when the seedling planting device 11 is in a normal seedling planting operation.
The lifting range for the vehicle body 1 is generally set in an area above the maximum lowering position of the seedling planting device 11, and it automatically operates only when descending to the maximum lowering position of this lifting range, When the plant rises above the maximum lowered position, the action of the stopper 21 is automatically released, so the stopper 21 does not interfere with normal planting work.

This eliminates the trouble associated with the above-mentioned structure in which the swing regulating connecting rod is removably provided, and the seedling planting device 11
It has become possible to easily and quickly support the vehicle while it is removed from the vehicle body.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is a side view of the riding type rice transplanter, Fig. 2 is a plan view of the machine, and Fig. 3 is a side view showing the seedling planting device in a ground-supported state. FIG. 4 is a partially cutaway side view of the stopper mounting portion, and FIG. 5 is a side view of another embodiment. DESCRIPTION OF SYMBOLS 11... Seedling planting device, 12a, 12b... Swing link, 20... Stand, 21... Stopper, A, 23... Interlocking member, b, 24... Contact member.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of upper and lower swing links 12a and 12b are removably connected to the vehicle body and swingable up and down, and the seedling planting device 11 is connected to the swing links 12.
a, 12b so as to be movable up and down, and a stand 20 is attached to the swing links 12a, 12b, so that the swing links 12a, 1
Seedling planting device 1 with 2b removed from the vehicle body
1 and swinging links 12a, 12b can be supported on the ground in a fixed relative posture, the maximum lowering position of the seedling planting device 11 of the lower swinging link 12b separated from the vehicle body. In conjunction with the upward swinging of the seedling planting device 11 from a posture corresponding to
interlocking members A, 23 capable of swinging the upper swinging link 12a detached from the vehicle body, which is in a posture corresponding to the maximum lowering position of 1; and the seedling planting device 11 of the swinging links 12a, 12b; As the seedling planting device 11 swings upward from a posture corresponding to the maximum lowered position of
2a, 12b and abutting members b, 24 that prevent relative angular deformation between the interlocking members A, 23 are provided, and both the swinging links 12a, 12b are allowed to swing upward relative to the seedling planting device 11. This rice transplanter is characterized by comprising a stopper 21 that prevents. 2. The rice transplanter according to claim 1, which is a registered utility model, characterized in that the rocking prevention action position of the stopper 21 can be changed and adjusted.