JPH0244651Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a seedling planting device that is installed between a link mechanism that is attached to a self-propelled vehicle so that it can be driven up and down, and a seedling planting device that is separably connected to this link mechanism. An engaging part that is lifted by the link mechanism is provided in a state that is engaged and disengaged as the link mechanism moves up and down, and a releasable lock mechanism that connects and fixes the link mechanism side member and the seedling planting device side member. Regarding a rice transplanter equipped with

The above-mentioned rice transplanter is designed so that the seedling planting device, which is wider than the vehicle body, can be separated from the vehicle body for transportation on the road, etc., and when the seedling planting device is connected or separated, the seedling planting device is By lifting and supporting the planting device using a link mechanism, the seedling planting device can be easily locked and unlocked. This seed rice transplanter eliminates the need for positioning operations between the link mechanism side member and the seedling planting device side member when locking the lock mechanism, that is, when the seedling planting device is lifted, the link mechanism There is a device shown in FIG. 6 in which the side member and the seedling planting device side member are aligned for connection and fixation. That is, four hooks 9 for the first member 10a on the seedling planting device side are provided on the link mechanism side member 8, and the first member 10a is sandwiched between the link mechanism side member 8 in the engaged state. , by contacting the second member 10b on the side of the seedling planting device,
The structure is such that the first member 10a and the link mechanism side member 8 are aligned to be connected and fixed by the locking tool 17. However, although this device is provided with the inclined guide surface 23 that moves the first member 10a in the front and back direction so as to move the first member 10a to a predetermined engagement position as the seedling planting device is lifted, the hook 9 cannot be moved. In order to engage the first member 10a, it is necessary to accurately align the hooks 9 and the first member 10a in the lateral direction and to engage all of the hooks 9, that is, each hook 9 must be properly engaged. It is necessary to accurately steer the vehicle body so that it fits together, and there is a drawback that it is difficult to connect,
Another drawback was that the structure of the engaging part was complicated.

The purpose of the present invention is to eliminate the need for alignment between the link mechanism side member and the seedling planting device side member when locking the lock mechanism, and to eliminate the need for the engagement work between the link mechanism and the seedling planting device. The purpose is to make it easy to manufacture and to obtain a simple structure.

The characteristic configuration of the present invention is that, in the above-mentioned rice transplanter, one hook is provided on either one of the link mechanism side member and the seedling planting device side member and is detachable from the other; a first inclined guide surface that relatively moves the engaged side member that engages and disengages from the hook in the left and right direction as the seedling planting device is lifted; a second inclined guide surface that relatively moves in the front-rear direction as the hook is lifted, and a position that aligns the hook and the engaged member by suppressing their relative movements in the front-rear direction and the left-right direction when the hook and the engaged member are engaged with each other; The above-mentioned engaging part is provided with an interlocking part, and its functions and effects are as follows.

That is, by providing the inclined guide surface and the engaging part, even if there is only one hook, when the hook is engaged, the hook and the seedling planting device side member or the link mechanism side member can be moved in the front-rear direction and Even if the position is shifted in the left-right direction, as the seedling planting device is lifted, the positional relationship between the hook and the seedling planting device side member or the link mechanism side member is corrected to the predetermined connection and fixing position. Furthermore, the seedling planting device side member may slide back and forth or side to side or swing from side to side due to the weight of the seedling planting device, and the link mechanism side member and the seedling planting device side member may shift from the predetermined connection state. is prevented. Therefore, it is no longer necessary to align the link mechanism side member and the seedling planting device side member when lifting the seedling planting device and locking the locking mechanism. When engaging the planting device, it is not necessary to accurately align the hook with the seedling planting device side member or the link mechanism side member, and only one hook is required to engage the hook. This has made it easier to operate, and the overall connection work has been made more efficient. Moreover, only one hook is required, and the structure of the engaging part can be simplified.

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

As shown in FIG. 1, a link mechanism 4 is installed at the rear of a self-propelled vehicle that has a driving unit 1, a spare seedling stand 2, a driver's seat 3, etc., and can be driven up and down by a hydraulic cylinder 5. The seedling planting device 6 is connected to the link mechanism 4, and the power is transmitted from the self-propelled vehicle to the seedling planting device 6 via the rotating shaft 7, thereby creating a riding type rice transplanter capable of planting eight rows. It is configured.

To configure the connection structure of the seedling planting device 6, as shown in FIGS. 2 to 4, one upward hook 9 is attached to the free end member 8 of the link mechanism 4, and a The connecting plate 10 as the engaged member to be removed is connected to a pair of left and right swing links 11 that enable the seedling planting device 6 to roll against a self-propelled vehicle.
a, 11b to the seedling planting device body 6a, the seedling planting device 6 and the link mechanism 4 are releasably engaged, and the hook 9 is inserted into the notch 12 of the connecting plate 10. The engaging portion 13 is configured such that it can be engaged by raising the link mechanism 4 in the state, and can be disengaged by lowering the link mechanism 4. Further, the front end side of the connecting shaft 14a or 14b of each of the swing links 11a and 11b with the connecting plate 10 is connected to the free end side member 8.
Connecting plate 1
0, and the retainer 15a or 15b from the free end side member 8 of each of the connecting shafts 11a, 11b,
It is pivotally connected to the free end member 8 so that it can be pivoted between an operating state in which it is engaged in a notch in the connecting shaft 14a or 14b and an action-released state in which it is disengaged from the notch, and is connected in the operating state. In order to tighten the plate 10 to the free end side member 8, and the retainer 1
The free end member 8 and the connecting plate 10 are connected and fixed by a spring 16a or 16b whose urging direction is switched as the springs 5a and 15b swing, so that they can be held separately in an activated state and a released state. A locking mechanism 17 is constructed which can be freely operated to release the lock. That is, the seedling planting device 6 is separably connected to enable detachment during transportation on the road, etc., and when the seedling planting device 6 is connected and separated, the seedling planting device 6 is connected to the engaging portion 13. The lock mechanism 17 is lifted and supported by the link mechanism 4 through the link mechanism 4.
can be locked or unlocked.

As shown in FIGS. 2 to 4, as the seedling planting device 6 is lifted, the connecting plate 10 is moved left and right so that the free end side member 8 and the connecting plate 10 are in a predetermined positional relationship for connecting and fixing. A pair of first inclined guide surfaces 18a, 18b for moving the connecting plate 10 back and forth, and a pair of second inclined guide surfaces 19a, 19b for moving the connecting plate 10 back and forth are provided on the connecting plate 10 or the hook 9, and the seedling planting device 6 is When lifting the seedling planting device 6, even if the hook 9 inserted into the notch 12 and the connecting plate 10 are not aligned in a predetermined position, as the seedling planting device 6 is lifted,
The hook 9 and the connecting plate 10 are automatically corrected as much as possible to the alignment state for connecting and fixing the free end side member 8 and the connecting plate 10, that is, the alignment state that should be achieved when the lock mechanism 17 is activated. It is configured. Furthermore, a notch 2 is provided in the connecting plate 10 to be located on the upper end side of the notch 12.
0 and the notch 21 provided at the bottom of the hook 9, the connecting plate 10 can be slid back and forth with respect to the hook 9,
The hook 9 is designed to suppress left-right sliding and left-right rocking.
and the connecting plate 10 constitute a positioning and interlocking part 22 that interlocks with the connecting plate 10 in the above-mentioned positioning state. That is, the contact between the inner wall of the notch 20 of the connecting plate 10 and the side surface of the hook 9 suppresses the left-right sliding and left-right rocking of the connecting plate 10, and the contact between the inner wall of the notch 21 of the hook 9 and the connecting plate The connecting plate 10 is configured to be restrained from sliding back and forth by contact with the front and back surfaces of the connecting plates 10, and the connecting plates 14a and 14b can be moved freely by simply lifting the seedling planting device 6. The free end member 8 and the connecting plate 10 are aligned to be inserted into the end member 8, and are maintained in that state.

To construct the engaging portion 13, a hook 9 may be provided on the seedling planting device 6 side, as shown in FIG. In this case, the link free end member 8 becomes the engaged member.

To connect and fix the free end side member 8 and the connecting plate 10, bolts or the like may be used to tighten and connect the two members 8 and 10, and these are collectively referred to as a locking mechanism 17.

[Brief explanation of drawings]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a perspective view of the connection part of the seedling planting device, and Fig. 3 is a partially cutaway view of the connection part of the seedling planting device. FIG. 4 is a cutaway side view, FIG. 4 is a cross-sectional view taken along the arrow - in FIG. 3, and FIG. 5 is a partially cutaway perspective view of another embodiment of the engaging portion.
FIG. 6 is a perspective view of a conventional connecting section. 4... Link mechanism, 6... Seedling planting device, 8...
Link mechanism side member, 9... Hook, 10... Seedling planting device side member, 13... Engagement portion, 17... Lock mechanism, 18a, 18b... First inclined guide surface, 19
a, 19b...second inclined guide surface, 22...positioning occlusion part.

Claims (1)

[Claims for Utility Model Registration] The seedling planting device 6 is installed between a link mechanism 4 that is attached to a self-propelled vehicle so that it can be driven up and down, and a seedling planting device 6 that is separably connected to this link mechanism 4. An engaging portion 13 that is lifted up by the link mechanism 4 is provided to be engaged and disengaged as the link mechanism 4 moves up and down, and the link mechanism side member 8 and the seedling planting device side member 10 are connected and fixed. A rice transplanter is provided with a lock mechanism 17 that can be freely released, and the link mechanism side member 8 and the seedling planting device side member 1 are connected to each other.
one hook 9 that is provided on either one of the hooks 0 and 0 and that engages and disengages from the other;
first inclined guide surfaces 18a, 18b that relatively move the engaged side member that engages and disengages the hook 9 and the engaged side member in the left and right direction as the seedling planting device 6 is lifted; second inclined guide surfaces 19a and 19b that are relatively moved in the front-rear direction as the planting device 6 is lifted; Positioning occlusion part 2 that suppresses movement and aligns
2 in the engaging portion 13.