JPS633849Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention includes, for example, a seedling stand and a planting part having planting claws, and the said planting part is installed on a traveling vehicle on which a worker rides. This article relates to a riding rice transplanter that performs continuous rice transplanting work.

"Prior Art" Conventionally, as shown in FIGS. 4 and 5, a vehicle body frame B on which an engine A is mounted is connected to a transmission case C.
front wheels E are installed on both sides of the front part of the transmission case C via the axle case D,
The front end of the axle case F is connected to both rear sides of the transmission case C, and the rear wheel G is connected to the rear end of the coupling case F.
I now have the technology to install it.

"Problems to be Solved by the Invention" In the prior art, the front wheel E and the front end of the axle case F are close to each other, and the mounting interval l between them is small, and the mud lifted by the front wheel E adheres to the axle case F. When the front wheel E is steered and rotated, the front wheel E comes closer to the front end of the axle case F, and the axle case F and the front wheel E interfere with each other through mud etc. attached to them. The case F was easily damaged, and it was difficult to obtain smooth steering rotation of the front wheels E.

In addition, when left and right axle cases F, F are provided on both sides of the transmission case C, by arranging a plurality of planting claws in an even row planting structure, the planting claws are located behind the axle case F, and in Fukada, the axle Due to case F, grooves are formed on the planting field surface of the planting nail, and even when leveled with a float, the formed grooves tend to remain without being completely leveled, resulting in lodging or floating seedlings. There were other problems.

Furthermore, as shown in Japanese Unexamined Patent Publication No. 56-88711, there was a technique in which the axle case was placed in the center of the machine body and left and right rear wheels were installed on both sides of the axle case, but the body frame was extended from the front end of the machine to the rear end. Since the transmission case and axle case were installed separately on the vehicle body frame, the transmission mechanism installed between the transmission case and the axle case was exposed on the underside of the vehicle body, making maintenance work more frequent due to mud and dirt deposits, etc. The vehicle body frame requires great strength, and there is a problem in that it is not easy to improve handling operability or simplify the vehicle body structure.

``Means for solving the problem'' However, the present invention arranges complicated planting claws in an even number row planting structure, and also installs a float in the center of the planting section on the rear side of the machine on the front and rear center line of the machine. In the riding rice transplanter to be installed, the front end of the axle case is integrally connected and fixed to the rear center of the transmission case on the machine side, and the left and right rear wheels are attached to both sides of the case at the rear end of the axle case that connects and supports the lifting link. The invention is characterized in that the axle case is located in front of the float at the center of the planting section.

``Function'' Therefore, even during planting work in deep fields, there is no groove formed by the axle case in front of the planting claws arranged in even numbered rows, which prevents the occurrence of lodging or floating seedlings, resulting in safety. In addition to being able to carry out rice planting work, the planting part and rear wheels are arranged around the axle case and supported by the transmission case, so the appearance of the transmission system between the transmission case and the axle case can be configured simply. Furthermore, it is possible to construct a strong vehicle body using a transmission case and an axle case, eliminating the need for a conventional vehicle body frame, making it easier to handle maintenance work and simplifying the vehicle body structure compared to the conventional method. It is possible.

"Embodiments" Examples of the present invention will be described below in detail based on the drawings. Fig. 1 shows a side view of the riding rice transplanter, and Fig. 2 shows a plan view of the same. A front wheel 6 for running in paddy fields is supported on both sides of the front part of the transmission case 4 via an axle case 5, and an axle chain case 7, which is an axle case, is provided at the center of the rear side of the transmission case 4. A rear wheel 8 for running in paddy fields is supported by the rear end of the chain case 7. Then, spare seedling stands 10 are attached to both sides of the bonnet 9 that covers the engine 2, etc., the chain case 7, etc. are covered by the body cover 12 forming the step 11, and the driver's seat 13 is attached to the upper part of the body cover 12. A steering handle 14 is provided at the rear of the bonnet 9 in front of the driver's seat 13.

Furthermore, 15 in the figure is a planting section that has a seedling stand 16 for multi-row planting, a plurality of planting claws 17, etc., and the forward-tilting seedling stand 16 with a high front and low back is connected to a guide rail 18 and Planting case 2 via guide rail 19
The planting claws 17 are attached to the planting case 20 via a planting arm 21 that is supported by the planter 0 so as to be slidable left and right and can be moved by a crank, and a planting claw drive shaft 22. A planting surface leveling float 23, which is a sliding body, is installed below the planting case 20, and a support frame 2 is installed on the front side of the planting case 20.
4, top link 25 and lower link 2
A support frame 24 is connected to the rear side of the traveling vehicle 1 via a three-point link mechanism 27 which is an elevating link including 6. The wheels 6 and 8 are driven to run at a substantially constant speed, and at the same time, one seedling is taken out by a planting claw 17 from a seedling platform 16 that slides back and forth from side to side, and rice planting work is performed continuously. do.

In a riding rice transplanter in which a plurality of planting claws 17 are arranged in an even row planting structure, and a float 23 in the center of the planting section 15 is arranged on the rear side of the machine on the longitudinal centerline of the machine, The front end of the axle chain case 7 is integrally connected and fixed to the center of the rear side of the transmission case 4, and the left and right rear ends 8, 8 are attached on both sides of the chain case 7 at the rear end of the axle chain case 7 that connects and supports the lifting link 26. The axle chain case 7 is located in front of the float 23 at the center of the planting section 15.

FIG. 3 is a traveling drive system diagram including the transmission case 4, in which 28 is an input pulley that is pivotally supported by the transmission case 4 and transmits the output of the engine 2, and 29 is a forward high-speed and low-medium speed gear. , 30 are forward low speed and reverse gears, 31 and 32 are left and right rear wheel side clutches, and 33 and 34 are side clutches 3.
1, 32, and the respective gears 29, 30 and the side clutches 31, 32.
The left and right brake pedals 35 and 36 provided on the right side of the step 11 are connected to the side clutch 3.
1 and 32, and by stepping on the pedals 35 and 36,
The side clutches 31 and 32 are turned off, and then the side brakes 33 and 34 are operated for braking.

The side clutches 31, 32 are provided with final gears 40, 40 which are meshed and connected, and the axles 41, 42 of the rear wheels 8, 8 are provided with a transmission chain 43,
The gears 40, 40 are connected to each other via the transmission case 4, and the drive shafts 39, 3 are provided at the front end of the axle chain case 7, which are connected to the center of the rear side of the transmission case 4.
9 to pivotally support the final gears 40, 40,
Further, axles 41, 4 are provided at the rear end of the chain case 7.
2 is pivotally supported, and the chains 43 and 44 are installed inside the chain case 7 thereof. Further, a hitch pin 45 is fixed to the rear end of the chain case 7, and the lower link 26 is connected to the hitch pin 45,
The chain case 7 supports the planting part 15.

46 in the figure is a front wheel differential mechanism to which drive is input via the gears 29 and 30, and the gear 2
9 and 30 and a differential mechanism 46, the front wheels 6 are driven in three forward stages and backward.

This embodiment is constructed as described above, and the axle chain case 7 is located at the center of the rear part of the transmission case 4.
By arranging them in series, even if the front wheels 6 are supported on the left and right sides of the transmission case 4 via the axle case 5, the steering rotation of the front wheels 6 will not be hindered by the chain case 7. The support position of the front wheel 6 can be set arbitrarily.

"Effects of the Invention" As is clear from the above embodiments, the present invention has a plurality of planting claws 17 arranged in an even row planting structure, and a planting part 15 on the rear side of the machine on the longitudinal centerline of the machine. In a riding rice transplanter equipped with a central float 23,
The front end of the axle case 7 is integrally connected and fixed to the rear center of the transmission case 4 on the machine side, and the elevating link 26
Left and right rear wheels 8, 8 are installed on both sides of the axle case 7 at the rear end of the axle case 7, which connects and supports the planting part 1.
5 The axle case 7 is positioned in front of the center float 23, and even in planting work in Fukada, the planting claws 17 are arranged in an even number of rows... Grooves can be formed in front by the axle case 7. In addition, the rice planting work can be carried out safely by preventing the occurrence of lodging or floating seedlings, and the planting part 15 and rear wheel 8 are arranged around the axle case 7, so that they can be moved into the transmission case 4. Since the transmission system is supported by the transmission case 4 and the axle case 7, the appearance of the transmission system between the transmission case 4 and the axle case 7 can be constructed simply, and the transmission case 4 and the axle case 7 can form a sturdy vehicle body, eliminating the need for a conventional vehicle body frame. This has practical effects such as improvement in handling operability such as maintenance work and simplification of the vehicle body structure compared to the conventional method.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing one embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a diagram of the main drive system, and Figs. 4 and 5 are schematic explanatory diagrams showing a conventional example. It is. 4...Mission case, 7...Axle chain case (axle case), 8...Rear wheel, 15...Planting section, 17...Planting claw, 23...Float, 26...
...Lower link (elevating link).

Claims (1)

[Scope of utility model registration request] In a riding rice transplanter in which a plurality of planting nails 17 are arranged in an even-row planting structure, and a float 23 in the center of the planting section 15 is arranged on the rear side of the machine on the longitudinal center line of the machine, The front end of the axle case 7 is integrally connected and fixed to the rear center of the transmission case 4, and left and right rear wheels 8, 8 are installed on both sides of the case 7 at the rear end of the axle case 7 that connects and supports the elevating link 26. ,
A riding rice transplanter characterized in that the axle case 7 is located in front of the float 23 at the center of the planting section 15.