JPH0439962B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a riding-type rice transplanter in which a rice-transplanting machine is attached to the rear of a riding-type traveling vehicle body via an elevating link mechanism.

[Prior art]

Conventionally, as disclosed in Japanese Utility Model Application Publication No. 52-145125, etc., a rice transplanter is attached to the rear of a traveling vehicle body via an elevating link mechanism. Some machines were equipped with a shaft stop on the front end of the mechanism that could roll freely relative to the vehicle body, and a lock mechanism that prevented this rolling action by operating a control lever.

[Problem to be solved by the invention]

In the conventional rolling lock mechanism mentioned above, the rolling position was located on the front end side of the elevating link mechanism and the rotation of the elevating link itself was restricted, so the rolling lock mechanism had to be provided on the traveling vehicle body side. It was then.

Since the locking mechanism is operated by a control lever, a considerable amount of locking force is required when operating the rolling lock, resulting in poor workability. In addition, since the lock mechanism completely prevents the rolling operation of the rice transplanting machine, for example, if the rice transplanting machine comes into contact with some kind of obstacle while traveling, it will be damaged by the impact. I had a problem with putting it away. Furthermore, since the rice-transplanting machine is supported on a cantilever by the lifting link mechanism with a large overhang from the traveling vehicle body, the rice-transplanting work is carried out using the lock mechanism located at the front end of the lifting link mechanism as described above. If the rice transplanter is raised and moved while the rolling operation of the machine is completely inhibited, it will receive a large impact from the vibrations of the traveling vehicle body, so its strength must be increased, making it difficult to obtain a lightweight rice transplanter. There were also some difficult challenges.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention provides a riding type rice transplanter in which an elevating link mechanism 10 is provided at the rear of a riding vehicle body 1, and a rice transplanting machine 18 is mounted on the rear of the elevating link mechanism 10 so as to be freely rolling. , a rolling restriction is provided between the rear part of the lifting link mechanism 10 and the rice transplanting working machine 18 to restrict the rolling operation of the rice transplanting working machine 18 when the lifting link mechanism 10 operates upward and raises the rice transplanting working machine 18. A device 24 is provided, and the rolling regulating device 24
The riding-type rice transplanter is characterized in that a rolling buffer elastic material 25a is provided at the top of the rice transplanter.

[Function and effect of the invention]

According to this invention, during rice transplanting work when the lifting link mechanism 10 is in the lower position, the rice transplanting machine 18 performs rolling operation to perform proper rice planting work.

Further, when the lifting link mechanism 10 is operated upward to raise the rice transplanting machine 18, the rolling regulating device 24 automatically acts to raise the rice transplanting machine 18.
It is possible to prevent the rice transplanting machine 18 from colliding with the ridge and being damaged due to large rolling motion of the rice transplanting machine 18 when turning in the field or going over the ridge.

Since the rolling regulating device 24 is provided with a rolling buffer elastic material 25a, for example, if the rice transplanting machine comes into contact with some kind of obstacle while traveling, the rice transplanting machine will not receive external force from the elastic material 25a. Since it performs a rolling operation to some extent, it avoids receiving the impact and is prevented from being damaged.

Furthermore, a rolling regulating device 24 is provided between the rear part of the lifting link mechanism 10 and the rice transplanting machine 18, and a rolling buffering elastic material 25a is provided on this rolling regulating device 24, so that when the rice transplanting machine is raised and travels. It is possible to reduce the impact on the rice transplanting machine due to the vibration of the traveling vehicle body, and the conventional problems can be solved.

〔Example〕

Reference numeral 1 denotes a running vehicle body, and the front side of the machine frame has a pair of left and right front wheels 2, 2 and a pair of left and right rear wheels 5, 5 supported via transmission cases 4, 4 attached to both left and right sides of a transmission case 3. An engine 6 is mounted on the upper part, a handle 7 is supported at the rear of the engine 6, and a driver's seat 8 is attached to the rear of the engine 6 via a support frame 9 on the side of the transmission cases 4, 4.

Reference numeral 10 denotes an elevating link mechanism, in which the bases of an upper link 11 and a lower link 12 made of spring material are pivotally connected to the support frame 9 with horizontal pins, and a rolling support member 13 is provided at the tip end side of both links. An integrally attached vertical link 14 is pivotally connected. The vertical link 14 and the upper link 11 are pivotally connected with the rear end side of the upper link slightly protruding rearward. A pin 16 is inserted into the elongated hole 15, and the pin 16 is inserted through a hole provided on the upper link 11 side. Also, the above link 1
An arm 26 is provided on the base side of 1, and this arm 26
is operated by a hydraulic cylinder device 17 mounted on the traveling vehicle body 1 side, so that the elevating link mechanism 10 is moved.

More specifically, when the hydraulic cylinder device 17 rotates the upper link 11 upward via the arm 26, the structure is such that the vertical link 14 is not rotated until the pin 16 comes into contact with the upper end of the elongated hole 15. If interpreted in the opposite way, the vertical link 14 is the elongated hole 1.
It is configured so that it can move freely within a range of 5.

Reference numeral 18 denotes a rice transplanting machine, which includes a seedling tank 19 that reciprocates from side to side in a planting transmission case 22, and a seedling planting tool 20 that takes out seedlings one by one from this seedling tank side and transplants them.
It is made up of floats 21, etc. that level the soil surface.

A shaft 23 that is integrally provided in the planting transmission case 22 of the rice transplanting machine 18 and projects forward at the left-right center position of the rice transplanting machine 18 is rotated by the rolling support member 13 that is integrated with the vertical link 14. It is worn freely.

24 is a rolling regulating device, which is connected to the upper link 1;
The rear view of the space between the extension part 11a on the rear end side of the rice transplanter 1 (the part behind the pivot point with the vertical link) and the planting transmission case 22 that constitutes the machine frame of the rice transplanting machine 18 is approximately V-shaped when viewed from the rear. Chains 25, 25 as attracting members are interposed and connected so as to form a shape, and when the extension part 11a of the upper link 11a is swung upward, the chain 2
5 and 25 are stretched so that the rolling of the rice transplanting machine 18 is restricted.

Between the chains 25, 25 of the rolling regulating device 24 and the extension portion 11a of the upper link 11, springs 25a, 25a are provided as shock absorbing elastic materials.

Next, the operation of the above example will be explained. After storing the seedlings in the seedling tank 19, the rice transplanting machine 18 is lowered by rotating the lifting link mechanism 10 downward using the hydraulic cylinder device 17, and the soil leveling float 21 is securely grounded on the surface of the topsoil of the paddy field. The passenger vehicle body 1 is moved forward in the state shown by the solid line.

At this time, when the float 21 of the rice transplanting machine 18 touches the ground, it is pushed up by the surface of the topsoil, so the upper link 11
The pin 16 is shifted downward from the upper end of the elongated hole 15 of the vertical link 14 and becomes an intermediate portion of the elongated hole 14 as shown in FIG. Then, the chains 25, 25 are relaxed, and the rice transplanting machine 18 can roll freely.

Since the rice transplanting machine is operated in this state, even if the tilling plate surface is deep from the surface of the topsoil and the lifting link 10 does not rotate sufficiently downward, the chain 25 , 25 can be rolled without tension, and even if the tiller is tilted to the left or right, the rice transplanter 18 is towed and propelled along the topsoil surface, and the planting depth is significantly increased in the left and right seedling planting rows. Nothing that goes crazy will happen.

Next, when the rice transplanting machine 18 is raised as shown in the hypothetical diagram in FIG. Raise it up.
At this time, the pin 16 attached to the upper link 11 is first rotated until it comes into contact with the upper end of the elongated hole 15, and then moves the vertical link 14 upward. At this time, until the vertical link 14 is raised,
The chains 25, 25 are pulled to the tension side, and rolling regulation of the rice transplanting machine 18 is started.

Since the rice-transplanting machine 18 is then raised, the rolling of the rice-transplanting machine 18 is first regulated in advance, and then the rice-transplanting machine 18 is lifted, thereby preventing wobbling during the ascent. Furthermore, during the ascent, the extension portion 11a of the upper link 11 is swung upward around the rear pivot pin 16, so the chains 25, 25 are tensed accordingly, and rolling is more reliably regulated. Ru.

In this way, when raised to the upper limit position,
The rolling regulating device 24 automatically acts to regulate the rolling operation of the rice transplanting machine 18, and the rice transplanting machine 18 rolls greatly when turning in the field or going over ridges, etc. This can prevent damage caused by collision with the ridge. Since the rolling regulating device 24 is provided with a rolling buffering elastic material 25a, for example, when the rice transplanting machine comes into contact with some kind of obstacle while traveling, the rice transplanting machine receives external force from the elastic material 25a. Since it performs a rolling operation to some extent, it avoids receiving the impact and is prevented from being damaged. Furthermore, since the elastic material 25a can buffer the impact caused by the vibration of the traveling vehicle body when the rice transplanting machine is raised and travels, the strength of each part of the rice transplanting machine 18 can be lowered compared to the conventional one, making it relatively It is possible to obtain a rice transplanter that has a lightweight configuration, is inexpensive, and has good planting performance.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with FIG. 1 being a partially cutaway side view and FIG. 2 being a perspective view of the main part. In addition, the symbol 1 in the figure is a passenger type traveling vehicle body, 1
0 indicates a rising link mechanism, 18 indicates a rice transplanting work machine, 24 indicates a rolling regulating device, and 25a indicates a rolling buffer elastic member (spring).

Claims (1)

[Claims] 1 Lifting link mechanism 1 at the rear of the passenger-type traveling vehicle body 1
In a riding type rice transplanter in which a rice transplanter 18 is mounted on the rear of the lift link mechanism 10 so as to be able to roll freely, the lift link mechanism 10 is installed upward between the rear of the lift link mechanism 10 and the rice transplanter 18. The present invention is characterized in that a rolling regulating device 24 is provided which regulates the rolling operation of the rice transplanting operating device 18 when the rice transplanting operating device 18 is raised by the operation, and the rolling regulating device 24 is provided with a rolling buffer elastic material 25a. Riding rice transplanter.