JPH078030A - Rolling lock structure of planting part in passenger rice transplanter - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to install a rolling restriction spring, marker release device, etc. above the front end of the planting part. [Structure] A riding rice transplanter in which a planting unit is connected to the rear of the traveling unit so as to be able to roll freely around an axis line in the front-rear direction through a lifting link mechanism, and the planting unit can be controlled to roll by a rolling control means. A pair of left and right rolling lock bodies are attached to the rear ends of the link mechanism, and lock guide body insertion holes are formed in each rolling lock body, while the base ends of the pair of left and right lock guide bodies are attached to the front end portion of the planting part. , The ends of the lock guide bodies are extended downward, and the pair of left and right lock guide bodies are inserted into the lock guide body insertion holes of the pair of left and right rolling lock bodies to raise the planting part. At the planting work position, the pair of left and right rolling lock bodies lock the rolling of the planting section via the respective lock guide bodies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling lock structure for a planting part of a riding rice transplanter.

[0002]

2. Description of the Related Art Conventionally, as a form of riding rice transplanter, a planting part is connected to a rear part of a running part via an elevating link mechanism so that the planting part can be freely rolled around an axis line in the front-rear direction, and the planting part can be used as a rolling control means. There are some that can be controlled by rolling.

In addition, such a riding rice transplanter is provided with a rolling lock mechanism for locking the rolling of the planting section at the non-planting work position where the planting section is raised, and the rolling lock mechanism is used for raising and lowering. Attach a pair of left and right rolling lock bodies to the rear end of the link mechanism, and attach the base ends of the lock guide bodies to each rolling lock body.
While extending the tip of each lock guide body upward, form lock guide body insertion holes on the left and right sides of the hitch mount attached to the front end of the planting part, and insert it in each lock guide body insertion hole. Each is configured by inserting a lock guide body.

[0004]

However, in the above-mentioned rolling lock mechanism, since the lock guide body protrudes upward through the lock guide insertion holes formed on the left and right side portions of the hitch table during the lock operation, the hitch table is not provided. There was a problem that a rolling restriction spring, a marker release device, etc. could not be attached to the upper part of the above, and a dead space was created above the hitch table.

[0005]

[Means for Solving the Problems] Therefore, a planting part is connected to a rear part of a running part via an elevating link mechanism so that the planting part can be rolled around an axis line in the front-rear direction, and the planting part can be controlled by rolling control means. In the riding rice transplanter, a pair of left and right rolling lock bodies were attached to the rear end of the lifting link mechanism, and a lock guide body insertion hole was formed in each rolling lock body, while a pair of left and right locks were formed at the front end of the planting section. While mounting the base end of the guide body, extend the tip of each lock guide body downward, insert the left and right lock guide bodies into the lock guide body insertion holes of the left and right rolling lock body, At the non-planting work position where the planting part is raised, a pair of left and right rolling lock bodies lock the rolling of the planting part through each lock guide body. There is provided St. rolling lock structure of planting portion in the riding rice transplanter to symptoms.

[0006]

[Operation] When planting seedlings, the running section is run to pull the planting section while the seedling is planted by the planting section. Rolling control is performed by the rolling control means, that is, even when the traveling section is inclined due to the unevenness of the cultivator, the planting section controls the posture so as to maintain a horizontal posture with respect to the field scene, and the planting depth of the seedlings is controlled. I try to keep it constant.

At the time of non-planting work, the rolling control is released and the planting section is moved up by the lifting link mechanism.

At this time, the pair of left and right rolling lock bodies attached to the rear ends of the lifting and lowering link mechanisms ascend while being guided by the pair of left and right lock guide bodies through the lock guide body insertion holes, and the lock guide bodies are moved. The rolling of the planting part is locked via this to hold the planting part in a substantially horizontal posture.

[0009]

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

A designated by reference numeral A in FIG. 1 is a riding rice transplanter, and the riding rice transplanter A has a planting section 20 connected to a rear of a traveling section 1 capable of self-moving by a lifting link mechanism 30 so as to be vertically movable.

As shown in FIG. 1, the traveling unit 1 has an engine 3 mounted on a front portion of a vehicle body frame 2 and a mission case 4 disposed on a rear portion of the vehicle body frame 2 at a position in front of the mission case 4. The left and right front wheels 6, 6 for traveling paddy fields are mounted via the front axle case 5, and the left and right rear wheels 8, 8 for traveling paddy fields are mounted at the rear of the mission case 4 via the rear axle case 7. .

[0012] Then, spare seedling mounts 10, 10 are attached to both sides of the bonnet 9 which covers the engine 2 and the like, and the mission case 4 and the like are covered by a vehicle body cover 12 forming a step 11, and the upper portion of the vehicle body cover 12 is covered. In the driver's seat 13
A steering handle 14 is provided at the front of the driver's seat 13 at the rear of the bonnet 9. Reference numeral 15 is a main gear shift lever, and 16 is a planted lifting / lowering gear shift lever.

The planting section 20 is, as shown in FIGS. 1 and 2,
Forward tilted seedling stand 22 with high front and low front on the planted mission case 21
Support the lower rail 23 and the guide rail 24 so as to be freely slidable in the left and right directions.
A rotary case 25 that rotates at a constant speed in one direction is attached to the rear part of the rotary case 25, and a pair of planting claws 26, 26 are attached at symmetrical positions with respect to the rotational axis of the rotary case 25. 27 is a center float, 28 is a side float, 70 is a fertilizer application device, and 71 is a chemical spraying device.

As shown in FIG. 1, a planting side hitch portion 29 is provided at the front end portion of the planting mission case 21, and the planting side hitch portion 29 is provided at the rear end portion of a lifting link mechanism 30 which will be described later. The link side hitch portion 31 provided in the above is removably connected to the link side hitch portion 31 so as to be able to roll around the axis line in the front-rear direction, and the planting portion 15 can be rolling-controlled by a rolling control means (not shown).

As shown in FIGS. 2 and 3, the planting side hitch portion 29 has a stay 32 attached to the front end portion of the planting mission case 21, and a hitch base 33 extending to the left-right width direction at the upper end of the stay 32. The rolling support shaft 34 is projected forward from the center of the hitch base 33, and the upper and lower positions of the rolling support shaft 34 are located directly above and below the rolling support shaft 34, respectively. The side rolling suppression pins 35, 36 are formed by projecting forward.

The lifting link mechanism 30, as shown in FIG.
The front end of the top link 41 and the front ends of the pair of left and right lower links 42, 42 are vertically rotatably connected to a mounting frame 40 provided upright at the rear end of the vehicle body frame 2, while each link 41 is connected to the link side hitch portion 31. The rear end of the vehicle body frame 2 is connected to the link-side hitch portion 31 while vertically connecting the rear ends of the
An elevating cylinder 43 provided at the rear part is interlockingly connected via an elevating operation link 44.

As shown in FIGS. 2 and 3, the link-side hitch portion 31 rises upward from the laterally elongated hitch forming body 50 extending in the lateral width direction and the central portion of the laterally elongated hitch formation body 50. Formed from the vertically elongated hitch forming body 51 formed by
The rear end of the top link 41 is connected to the upper portion of the vertically elongated hitch forming body 51, and the rear ends of the pair of left and right lower links 42, 42 are connected to the left and right ends of the horizontally elongated hitch forming body 50. A boss portion 52 is provided in the lower part of the boss portion 52, and the rolling support shaft 34 is rotatably pivotally connected to the boss portion 52 about the axis line in the front-rear direction. 51
While the upper pin receiving portion 53 is provided on the rear surface, the lower pin receiving portion 54 is provided below the vertically elongated hitch forming body 51 located directly below the boss portion 52, and the pin receiving portions 53, 54 are provided with Attached side hitch part
The upper and lower rolling suppression pins 35 and 36 provided on the 29 are fitted respectively. 41a, 41b, 42a, 42b are link connecting pins, respectively.

In this way, by connecting the link side hitch portion 31 to the planting side hitch portion 29, the planting portion 15 can be freely rolled around the boss portion 52, and the upper and lower rolling restraining pins 35, By means of 36, the excessive response of the rolling motion of the planting part 15 can be suppressed and the posture of the planting part 15 can be stabilized.

In the above-mentioned structure, the gist of the present invention resides in the rolling lock structure of the planting portion 15, and the structure will be described below.

That is, in this embodiment, the rolling lock mechanism 60 is provided as the rolling lock structure.
As shown in FIGS. 2 to 4, the rolling lock mechanism 60 includes rolling lock members 61 and 6 at the rear ends of the pair of left and right lower links 42 and 42 forming part of the lifting link mechanism 30, respectively.
Install 1 to form the lock guide body insertion holes 62, 62 in each rolling lock body 61, 61, while mounting it on the left and right side ends 33a, 33a of the hitch base 33 that forms a part of the planting side hitch portion 29. Brackets 63, 63 are rotatably supported by rotating support shafts 64, 64 so as to be rotatable around the vertical axis.
A pair of left and right mounting pieces 63a, 63a, 63a, 63a are vertically hung on 63, 63, respectively, and between the mounting pieces 63a, 63a, 63a, 63a, a substantially U-shaped support bracket 74, 74 in front view is provided. Swing support shaft 65,65
With the lock guides formed on each rolling lock body 61, the base ends of the lock guide bodies 66, 66 are attached to the bottoms of the support brackets 64, 64, respectively. The lock guide bodies 66, 66 are extended along the vertical movement path of the insertion hole 62 to form each lock guide body 66, 66 in an approximately quarter arc shape.
Insert each lock guide body 66, 66 into 2, 62,
Buffer springs 67, 67 are wound around the outer peripheral surface of the base end portion of each lock guide body 66, 66.

In this way, when the planting part 20 is raised to the highest position which is the non-planting working position by the elevating link mechanism 30, the rolling lock bodies 61, 61 interpose the buffer springs 67, 67. The hitch base 33 is brought into contact with the left and right side portions of the hitch base 33 to hold the planting portion 15 in a substantially horizontal posture.

At this time, as shown in FIG. 2, the lock guide bodies 66, 66 are mounted rotatably in the direction a about the rotary support shafts 64, 64, and as shown in FIG. 3 and FIG. In addition, since it is swingably mounted in the direction b around the swing support shafts 65, 65, the rolling lock body 6 that moves up
1, 61 are the same while rotating and swinging the lock guide bodies 66, 66 through the lock guide body insertion holes 62, 62 along the up-and-down rotation locus of the planting section 20 and the left and right rolling loci. The lock guide bodies 66, 66 are designed to smoothly move up.

Similarly, when the planting section 20 is lowered, the rolling lock bodies 61, 61 also smoothly descend along the lock guide bodies 66, 66 through the lock guide body insertion holes 62, 62. I am trying to do it.

Moreover, the lock guide bodies 66, 66 are formed by extending downward from the left and right end portions 33a, 33a of the hitch base 33, respectively, so that the rolling guide spring and the marker release can be located above the hitch base 33. A device or the like can be attached so that the space above the hitch table 33 can be effectively used.

[0025]

According to the present invention, the following effects can be obtained.

That is, according to the present invention, when the pair of left and right rolling lock bodies lock the rolling of the planting section through the pair of left and right lock guide bodies in the non-planting work position where the planting section is raised. Since the lock guide body projects downward through the lock guide body insertion hole formed in the rolling lock body, it is possible to install a rolling restriction spring, a marker release device, etc. at the riding position at the front end of the planting part. Therefore, the space formed above the front end of the planting part can be effectively used.

[Brief description of drawings]

FIG. 1 is a side view of a riding rice transplanter equipped with a rolling lock structure according to the present invention.

FIG. 2 is a front view showing the rolling lock structure.

FIG. 3 is a partially cutaway side view showing the rolling lock structure.

FIG. 4 is a side view showing a rolling lock state of the rolling lock structure.

[Explanation of symbols]

 A Passenger rice transplanter 1 Traveling part 20 Planting part 30 Lifting link mechanism 61 Rolling lock body 66 Lock guide body

Claims (1)

[Claims] 1. A riding rice transplanter in which a planting part is connected to a rear part of a traveling part so as to be able to roll freely around an axis line in the front-rear direction through an elevating link mechanism, and the planting part is capable of rolling control by a rolling control means. , Attach a pair of left and right rolling lock bodies to the rear end of the lifting link mechanism, and form a lock guide body insertion hole in each rolling lock body, and attach the base ends of the pair of left and right lock guide bodies to the front end of the planting section. While installing, extend the tip of each lock guide body downward, insert the pair of left and right lock guide bodies into the lock guide body insertion holes of the pair of left and right rolling lock bodies, and raise the planting part. In the non-planting work position, the pair of left and right rolling lock bodies lock the rolling of the planting section via the lock guide bodies, respectively. The rolling lock structure of the planting part.