JPH0244655Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention allows the traveling aircraft to be driven up and down via a link mechanism, and is moved in the horizontal direction around the longitudinal axis of the aircraft via a low link device. A lock mechanism that connects the seedling planting device so as to be tiltable and releasably connects and fixes the link mechanism side member and the seedling planting device side member attached to the seedling planting device via the rolling device. An engaging portion for lifting the seedling planting device by the link mechanism is provided between the link mechanism side member and the seedling planting device side member, and an engaging portion is provided between the link mechanism side member and the seedling planting device side member to engage and disengage as the link mechanism moves up and down. The present invention relates to a rice transplanter installed in a state where

[Conventional technology]

Some conventional rice transplanters have a seedling planting device that is wider than the width of the machine in the horizontal direction, and rice transplanters with seedling planting devices of such a wide width are easy to transport. In order to achieve this, as described at the beginning, there are devices in which the link mechanism side member and the seedling planting device are configured to be detachable.

[The problem that the idea aims to solve]

However, in the conventional attachment/detachment structure, connection and
Since the structure was configured so that only the connection could be released, when the link mechanism side member and the seedling planting device were connected and locked, it took time and effort to align each member, and there is still room for improvement.

In other words, since the seedling planting device is heavy, it is difficult to move the seedling planting device manually when connecting the separated seedling planting device to the link mechanism side member. Although positioning is performed by movement, it is often wasted time to move the traveling aircraft to the desired position, and alignment is time consuming.

In addition, as mentioned at the beginning, in a connection structure with a lifting type engagement part, the seedling planting device is likely to roll during the lifting process, so when performing the locking operation, the seedling planting device will roll. There is also room for improvement from a safety standpoint, as the robot may swing and come into contact with the worker.

An object of the present invention is to rationally configure a rice transplanter that can quickly and safely connect a separated seedling planting device to a link mechanism side without much effort.

[Means to solve the problem]

As mentioned at the beginning, the feature of the present invention is that in a rice transplanter in which a seedling planting device is connected to a traveling machine body and is configured to be detachable, the engaging portion is configured with the link mechanism side member. A hook is provided on one side of the seedling planting device side member to be connected to and disconnected from the other side,
Lifting the hook and the seedling planting device side member or the link mechanism side member and the seedling planting device so that the link mechanism side member and the seedling planting device side member are in an aligned state for connecting and fixing the link mechanism side member and the seedling planting device side member. a first inclined guide hole that is moved relative to the left and right, and a second inclined guide surface that is moved relatively back and forth;
The hook and the seedling planting device side member or the link mechanism side member are arranged so as to suppress back and forth sliding, left and right sliding, and left and right rocking of the seedling planting device side member or the link mechanism side member with respect to the hook. The seedling planting device is provided with an interlocking portion that engages in the aligned state, and a stopper is attached that abuts and prevents the left and right tilting movement of the seedling planting device when the links constituting the link mechanism swing upward by more than a set value. , its action and effect are as follows.

[Effect]

In other words, according to the present invention, when connecting the seedling planting device to the link mechanism side member, the traveling body is moved to the extent that the hook reaches a position where it can be engaged, and the link mechanism side member is raised. By lifting the seedling planting device, the seedling planting moves along the first slope and along the second slope guide hole due to its own weight, and as a result, the occlusal part reaches a position where it can be locked. .

In addition, when the lifting operation exceeds a predetermined amount during lifting, the stopper restricts the rolling of the seedling planting device, so the seedling planting device will not swing even if touched by an operator. .

[Effect of idea]

Therefore, a rice transplanter has been rationally constructed that allows the connection of the separated seedling planting device to the link mechanism side without much effort, quickly, and safely.

〔Example〕

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

As shown in Fig. 1, at the rear of the body of a self-propelled vehicle, it has a driving unit 1, a spare seedling stand 2, a driver seat 3, etc.
The lift can be operated freely via the link mechanism 4 which can be driven up and down by the hydraulic cylinder 5, and the left and right movement of the fuselage can be performed around the axis in the longitudinal direction via a pair of left and right swinging links 11a and 11b. The seedling planting device 6 is connected to the seedling planting device 6 so that it can be tilted in any direction, and the rotating shaft 7 can be freely divided into the self-propelled vehicle side portion and the seedling planting device side portion by the separation part 7a. The seedling planting device 6 is configured to transmit power to the attached device 6, making it possible to plant 8 rows, and the seedling planting device 6 rolls against the self-propelled vehicle to adjust the planting depth on the left and right sides regardless of the left and right inclination of the self-propelled vehicle. A riding type rice transplanter is constructed so that the rice transplanter is maintained at a substantially constant level.

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 to be removed is attached to the seedling planting device mechanism 6a via the swing links 11a and 11b, and the hook 9 is attached so that the seedling planting device 6 and the link mechanism 4 are releasably engaged. The engaging part 13 is inserted into the notch 12 of the connecting plate 10, and is engaged by raising the link mechanism 4, and is disengaged by lowering the link mechanism 4. It is configured. Then, 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
The connecting shaft 14 is made to protrude from the connecting plate 10 so as to be removably penetrated by the free end side member 8.
A and 14b are attached to the connecting shaft 1 with a retainer 15a or 14b that prevents them from being pulled out from the free end side member 8, respectively.
The connecting plate 10 is pivotally connected to the free end side member 8 so that it can be pivoted between an operating state in which it is engaged in the notch of 4a or 14b and an action-released state in which it is disengaged from the notch. to the free end member 8, and the retainer 15a, 1
In order to connect and fix the free end side member 8 and the connecting plate 10, the free end side member 8 and the connecting plate 10 are configured so that they can be held separately in an activated state and a deactivated state by a spring 16a or 16b whose biasing direction changes as the spring 5b swings. A lock mechanism 17 is constructed which can be freely released.

That is, the seedling planting device 6 is separably connected to the link mechanism 4, and when the seedling planting device 6 is transported on the road, a removable trolley 23 is attached to one end side of the transmission case 6b of the seedling planting device 6, and a self-propelled vehicle is attached. As shown in FIG. 5, the other end of the transmission case 6b is connected to the link mechanism 4 through a separable traction tool 24 so as to be able to swing freely around the vertical axis. Seedling stand 2 so that the width is smaller than the working width.
The seedling planting device 6 can be towed in such a state that the width direction of the seedling planting device 5 is in the longitudinal direction of the self-propelled vehicle. Furthermore, when the seedling planting device 6 is connected and separated, the locking mechanism 17 can be locked or released while the seedling planting device 6 is lifted and supported by the link mechanism 4 via the engaging portion 13. be.

As shown in FIG. 2, as the seedling planting device 6 is lifted, the connecting plate 10 is moved left and right so that the free end member 8 and the connecting plate 10 are in a predetermined positional relationship for connecting and fixing. The first inclined guide surfaces 18a, 18 of
b, 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 when lifting the seedling planting device 6,
For example, the hook 9 and the connecting plate 1 inserted into the notch 12
0 is not aligned with the predetermined position, as the seedling planting device 6 is lifted, the free end member 8
The hook 9 and the connecting plate 10 are configured to be automatically corrected so that they are in the aligned state for connecting and fixing the hook 9 and the connecting plate 10, that is, the aligned state that should be achieved when the locking mechanism 17 is activated. be. Furthermore, the notch 12 is provided in the connecting plate 10.
The notch 20 provided at the upper end side and the notch 21 provided at the bottom of the hook 9 suppress back and forth rocking, left and right rocking, and left and right rocking of the connecting plate 10 with respect to the hook 9. As shown in FIG.
It consists of 2. That is, the contact between the inner wall of the notch 20 of the connecting plate 10 and the lateral side surface of the hook 9 suppresses the left-right swinging 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 By contacting the front and back surfaces of 10, the connecting plate 10
It is configured so that the back and forth rocking of is suppressed, and
By simply lifting the seedling planting device 6, the free end member 8 and the connecting plate 10 are aligned so that the connecting shafts 14a and 14b are inserted into the free end member 8, and
It is maintained in that state.

As shown in FIG. 2, both swing links 11a,
A pair of stoppers 26 each act separately on 11b.
a, 26b are separately attached to the pair of left and right lower links 4a, 4b constituting the link mechanism 4, and when these lower links 4a, 4b are at a lower level than the set swinging upward position, When the lower links 4a, 4b are removed from the swinging link 11a or 11b as shown in FIG.
The seedling planting device 6 is configured so as to be in contact with the ground, so that the seedling planting device 6 can be rolled during work, and it can be used for connection and uncoupling work, as well as turning on headlands and ridges during planting work. When the seedling planting device 6 is raised beyond a predetermined level due to overstepping or the like, the structure is such that the left and right tilting movements of the seedling planting device 6 are forcibly prevented from coming into contact with each other.

To construct the truck 23, as shown in FIG.
a lock pin 3 that is rotatably attached via the lock pin 3 and disables relative rotation between the connecting tool 27 and the pedestal 29;
1 is attached to the coupling tool 27 so that it can be freely pulled out and released by the operation part 31a, and the spring 3
2 protrudes toward the pedestal 29 side, and as the trolley frame 28 rotates, its paired transmission case 6b
When the posture becomes the running posture shown by the solid line in Figure 5,
It is configured to be automatically inserted into the pedestal 29. That is, due to the relationship between the tread of the cart 23, the mounting position of the seedling planting device 6 on the cart, and the shape of the self-propelled vehicle, when the seedling planting device 6 is separated, the cart wheels 33 In order to prevent the rear wheel 34 of the self-propelled vehicle from hitting the rear wheel 34 of the self-propelled vehicle, the truck 23 is attached to the seedling planting device 6 in a state where the truck frame 28 is inclined with respect to the transmission case 6b. 6 is connected to the towing state and towed, the bogie frame 28 rotates due to the ground resistance acting on the bogie wheels 33, and the bogie 23 is automatically corrected to the traveling attitude and then locked. There is.

In order to control the raising and lowering of the seedling planting device 6 relative to self-propelled vehicles so that the seedling planting depth is maintained constant regardless of the unevenness of the tiller, the control valve (not shown) of the cylinder 5 is operated as shown in FIG. As shown in FIG. 8, the sensor float 37 is connected to the front end of the sensor float 37 via the release wire 35 and the bending/extending link mechanism 36, and as the sensor float 37 moves up and down with respect to the seedling planting device body. The cylinder 5 is designed to be automatically operated. Then, an inner wire 38 is connected to the release wire 35.
The tip ring portion 38a of the link 36a is connected to the horizontal axis 39 of the link 36a.
On the other hand, the tip cylindrical portion 40a of the outer wire 40 is removably inserted into the notch of the wire receiver 42 rotatably attached to the link 36b via the connecting pin 41. The retainer 43, which is slidably fitted onto the cylindrical portion 40a, is inserted into the large diameter portion on the back side of the notch of the wire receiver 42 by the biasing force of the spring 44, and the wire receiver 42 By locking the distal end cylindrical portion 40a from the wire receiver 42, the washer 45 fixed to the distal end cylindrical portion 40a comes into contact with the wire receiver 42, and the spring 44 prevents the distal end cylindrical portion 40a from coming off from the wire receiver 42. 43 are applied to the wire receiver 42 to prevent the tip tube portion 40a from swinging. That is, when connecting or separating the seedling planting device 6, the tip ring portion 38a is inserted and removed from the horizontal shaft 39, and the retainer 43 is pulled out from the wire receiver 42 against the spring 44. However, the release wire 35 is connected or separated by inserting and removing the tip tube portion 40a from the wire receiver 42 through the small diameter opening of the notch.

In constructing the engaging portion 13, the hook 9 may be provided on the connecting plate 10 side.

In order 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.

In order to enable rolling of the seedling planting device 6, instead of the swing links 11a and 11b, a configuration may be adopted in which the seedling planting device body and the connecting plate are pivotally connected by a single connecting shaft. , these are rolled by rolling device 1
They are collectively referred to as 1a and 11b.

[Brief explanation of the drawing]

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 A is a part showing the stopper in its non-operating state. Figure 3B is a partially cutaway side view showing the operating state of the stopper, Figure 4 is a partially cutaway rear view of the connection section of the seedling planting device, and Figure 5 is a partially cutaway side view of the seedling planting device towing. FIG. 6 is a sectional view of the trolley attachment portion, FIG. 7 is a partially cutaway side view of the release wire attachment portion, and FIG. 8 is a cross-sectional view taken in the direction of the - arrow in FIG. 7. 4...Link mechanism, 4a, 4b...Link, 6
... Seedling planting device, 8 ... Link mechanism side member, 10
...Seedling planting device side member, 11a, 11b...Rolling device, 13...Engaging portion, 17...Lock mechanism, 18a, 18b...First inclined guide surface, 19
a, 19b...second inclined guide surface, 22...occlusal portion, 26a, 26b...stopper.

Claims (1)

[Scope of utility model registration request] A seedling planting device 6 is connected to the traveling body through a link mechanism 4 so as to be freely driven up and down, and through low link devices 11a and 11b so as to be tiltable in the left and right directions of the body around the longitudinal axis of the body. A lock mechanism 17 is provided for releasably connecting and fixing the link mechanism side member 8 and the seedling planting device side member 10 attached to the seedling planting device 6 via the low link devices 11a and 11b. An engaging portion 13 for lifting the seedling planting device 6 by the link mechanism 4 is engaged between the link mechanism side member 8 and the seedling planting device side member 10 as the link mechanism 4 moves up and down. The rice transplanter is provided in a detachable state, and the engaging portion 13 includes one hook attached to one of the link mechanism side member 8 and the seedling planting device side member 10 and detachable from the other. 9 is provided, and the hook 9 and the seedling planting device side member 10 or the link mechanism side member are aligned so that the link mechanism side member 8 and the seedling planting device side member 10 are connected and fixed. 8 and the first inclined guide surfaces 18a, 18 that are relatively moved left and right as the seedling planting device 6 is lifted.
b, and second inclined guide surfaces 19a and 19b that are relatively moved back and forth are provided, and the seedling planting device side member 10 or the link mechanism side member 8 is provided with back and forth sliding, left and right sliding, and left and right swinging with respect to the hook 9. An interlocking portion 22 is provided in which the hook 9 and the seedling planting device side member 10 or the link mechanism side member 8 engage in the aligned state so as to suppress the movement of the link 4a constituting the link mechanism 4. ,4b,
This rice transplanter is equipped with stoppers 26a and 26b that abut and prevent the left and right tilting movement of the seedling planting device 6 when the links 4a and 4b swing upward beyond a set level.