JP3568442B2 - Riding paddy working machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paddy field working machine such as a rice transplanter or a direct sowing machine configured as a riding type.
[0002]
[Prior art]
In the riding type paddy working machine as described above, working devices such as a seedling planting device and a direct sowing device are connected to a rear portion of the traveling machine body. Therefore, when providing a canopy that covers the upper part of the boarding operation unit, the support column is used for work on the working device from the boarding operation unit (for paddy seedling work, etc. when the paddy working machine is a rice transplanter, etc. In the case of a direct sowing machine, the operation is a seed replenishing operation for the seed storage hopper, etc.). In addition, in order to improve the stability of the front-rear balance of the aircraft, an engine and a transmission case are arranged on the front side of the traveling aircraft, and a fuel tank is arranged above the engine. .
[0003]
Therefore, in a conventional riding paddy working machine, as disclosed in, for example, JP-A-10-229715, a column of a canopy is connected to a lower transmission case through a hood covering an engine, a fuel tank, and the like. I was
[0005]
[Problems to be solved by the invention]
However, according to the above-mentioned prior art, although the canopy can be strongly supported by connecting the canopy support to the transmission case, it is necessary to pass the canopy support through the hood. In addition, the arrangement of the hood is restricted, and the pillars are in the way, making it difficult to maintain the equipment in the hood.
[0006]
By the way, in order to prevent the support of the canopy from passing through the hood, the support frame to which the support is connected may be extended laterally outward from the front frame that supports the engine, In this case, since the support frame is in a state of being cantilevered by the front frame, there is a problem in that the support strength of the canopy is reduced.
[0008]
The purpose of the present invention is placed constraints equipment in the hood, or becomes difficult to perform maintenance for the equipment in the hood, without causing inconvenience, in that allows for the support of the canopy firmly There is .
[0009]
[Means for Solving the Problems]
〔Constitution〕
To achieve the above Symbol object, the invention of claim 1, wherein of the present invention includes a front frame of the front and rear direction for supporting an engine mounted on a front portion of the vehicle body and laterally extending front axle case A support frame was erected over the support frame, and a column of a canopy that covers an upper part of a riding operation unit formed behind the engine was connected to the support frame.
[0010]
[Action]
According to the first aspect of the present invention, it is possible to connect the support of the canopy to the support frame provided over the front frame and the front axle case, so that the support of the canopy is erected outside the hood. become able to. In other words, since it is not necessary to pass the canopy strut through the bonnet unlike the related art in which the canopy strut is connected to the transmission case, the inconvenience in which the arrangement of devices in the bonnet is restricted by the canopy strut is eliminated. In addition, the maintenance of the equipment in the hood can be facilitated.
[0011]
In addition, the support frame is firmly attached to the front frame and the front axle case, which are more rigidly attached, in a two-sided manner, so that sufficient canopy support strength is secured. Will be able to
[0012]
〔effect〕
Therefore, the canopy can be firmly supported without inconveniences such as a restriction on the arrangement of the devices in the hood and a difficulty in performing maintenance on the devices in the hood.
[0013]
〔Constitution〕
To achieve the above Symbol object, the invention of claim 2, wherein one of the present invention includes a front frame of the front and rear direction for supporting an engine mounted on a front portion of the vehicle body and laterally extending front axle case A support frame is provided over the support frame, and a support column of a canopy that covers an upper part of the riding operation unit formed behind the engine is provided on the supporting frame so that the vehicle can get on and off from the forward position of the fuselage with respect to the riding operation unit. The engine was connected so as to sandwich the getting-in / out step disposed on the lateral side of the engine.
[0014]
[Action]
According to the second aspect of the present invention, it is possible to connect the support of the canopy to the support frame provided over the front frame and the front axle case, so that the support of the canopy is erected outside the hood. become able to. In other words, since there is no need to pass the canopy strut through the bonnet as in the prior art for connecting the canopy strut to the mission case, the inconvenience in which the arrangement of devices in the bonnet is restricted by the canopy strut is eliminated. In addition, the maintenance of the equipment in the hood can be facilitated.
[0015]
In addition, the support frame is firmly attached to the front frame and the front axle case, which are more rigidly attached, in a two-sided manner, so that sufficient canopy support strength is secured. Will be able to
[0016]
Further, since the canopy strut is connected to the support frame with the step of getting on and off, the supporting strength of the step of getting on and off can be increased.
[0017]
〔effect〕
Therefore, the canopy can be firmly supported without inconveniences such as the arrangement of the devices in the hood is restricted, and the maintenance of the devices in the hood becomes difficult, and the support of the getting on / off step is supported. The strength can be improved.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows an overall side view of a riding type rice transplanter, which is an example of a riding type rice field working machine, and FIG. 2 shows an overall plan view of the riding type rice transplanter. The rice transplanting machine is configured as a riding type. A seedling planting device 4, which is an example of a paddy field working device 4, is connected to a rear portion of the traveling machine body 1 via a link mechanism 3 that moves up and down by operation of a hydraulic cylinder 2 so as to be able to move up and down. It is configured by mounting.
[0023]
As shown in FIGS. 1 to 3, the traveling body 1 includes a pair of left and right main frames 6, a transmission case 7 connected to the front end of each main frame 6, and a front case extending forward from the transmission case 7. A body frame A including a front frame 8, an engine 9 mounted on and supported by the front frame 8, a hydrostatic continuously variable transmission 10 interposed between the engine 9 and the transmission case 7, an engine A belt-type transmission 11 for transmitting the power from the transmission 9 to the hydrostatic continuously variable transmission 10, a pair of left and right front axle cases 12 extending leftward and rightward from the transmission case 7, and supported by each front axle case 12. A pair of left and right front wheels 13, a rear axle case 14 connected to the rear of the body frame A, a pair of left and right rear wheels 15 supported by the rear axle case 14, and a steerin for steering the left and right front wheels 13. Wheel 16, the driver's seat 17 is deployed above the rear of the body frame A and is constituted by such as a canopy 18, which covers the upper side of the driver's portion B formed by and the like steering wheel 16 and the driver's seat 17.
[0024]
As shown in FIG. 3, a torque generator 19 for hydraulic power steering is provided above the transmission case 7 in conjunction with a steering shaft 16 a of the steering wheel 16, and a support frame 20 is connected to an upper surface of the torque generator 19. A handle post 21 for supporting the steering wheel 16 is erected on the support frame 20, and a control panel 23 is connected to the handle post 21 via a connector 22.
[0025]
As shown in FIGS. 3 to 6, a substantially U-shaped support stay 24 extends forward and upward from the support frame 20, and the left and right extending ends 24 </ b> A of the support stay 24 are provided with the engine 9. A bracket 26 for supporting a fuel tank 25 disposed above is welded. Each of the left and right brackets 26 has a first through hole 26A and a first welding nut 26B serving as a support portion C of the fuel tank 25, and a swing fulcrum of a front bonnet 27 that covers the front of the engine 9 and the fuel tank 25 so as to be openable and closable. A fulcrum pin 26C serving as P, a second through hole 26D serving as a mounting portion D of a rear bonnet 28 covering the rear of the engine 9 and the fuel tank 25, and a second welding nut 26E are provided. That is, the support stay 24 for supporting the fuel tank 25 and the left and right brackets 26 are also used as mounting members for mounting the front bonnet 27 and the rear bonnet 28, so that the configuration is simplified and the manufacturing cost is reduced. It can be planned.
[0026]
As shown in FIGS. 4 and 5, a pair of left and right positioning holes 20 a are formed in the support frame 20 to engage with a pair of left and right positioning projections 24 a formed on the base end portion 24 </ b> B of the support stay 24. Further, a pair of front and rear holes 24b for positioning are formed in each extended end 24A of the support stay 24 so as to engage with a pair of front and rear projections 26a for positioning formed on each bracket 26. That is, when assembling the fuel tank 25, the front bonnet 27, and the rear bonnet 28, the projections 26a of the bracket 26 corresponding to the holes 24b formed in the extension ends 24A of the support stay 24 are engaged. In this state, the extending ends 24A of the support stays 24 are welded to the corresponding brackets 26, and the projections 24a of the support stays 24 are engaged with the holes 20a of the support frame 20, and the support stays 24 and the support frame 24 are engaged. After connecting the fuel tank 25, the front bonnet 27, and the rear bonnet 28 to the left and right brackets 26, the fuel tank 25, the front bonnet 27, and the rear bonnet 28 are connected to the left and right brackets 26, respectively. In the state where the fuel tank 25 is accommodated in the narrow space between the front and rear bonnets 27 and 28, and the opening and closing swing operation of the front bonnet 27 is performed. So that the can be assembled accurately in a state smoothly perform the. Reference numerals 20b and 24c shown in FIG. 5 are connection holes formed in each of the support frame 20 and the support stay 24 for connecting the support frame 20 and the support stay 24 with bolts.
[0027]
As shown in FIGS. 1 and 2, on the left and right sides of the front and rear hoods 27 and 28, a getting-on / off step 30 that is continuous with the driving step 29 of the boarding operation unit B is provided. It is possible to get on and off the boarding operation section B even from the position. Also, the left and right columns 18A of the canopy 18 do not obstruct the supply of seedlings from the spare seedling table 31 erected outside the left and right getting on and off steps 30 to the seedling table 32 of the seedling planting apparatus 4. The vehicle body 1 is erected from right and left steps 30 of the vehicle body.
[0028]
As shown in FIGS. 6 to 9, a support frame 33 made of a pipe material or the like is provided below each of the left and right steps 30, and the front end portion 33 </ b> A of the support frame 33 is attached to the front frame 8. It is bolted and its rear end 33B is connected to the front axle case 12 via a U-bolt 34. Further, the front and rear intermediate portion thereof is jointly connected to the stepping-off step 30 and the column 18A of the canopy 18 together. A support portion 33C is provided.
[0029]
That is, the column 18A of the canopy 18 is attached to the support frame 33 that is firmly attached to the front frame 8 and the front axle case 12 that are both rigidly attached to each other. Since the left and right getting on and off steps 30 are sandwiched, the supporting strength of the canopy 18 can be sufficiently secured, and the supporting strength of the getting on and off steps 30 can be increased. . In addition, this allows the support 18A of the canopy 18 to be erected on the lateral outer sides of the front and rear bonnets 27 and 28. For example, the support 18A of the canopy 18 can be moved forward and backward to obtain a sufficient supporting strength. The arrangement of the engine 9 and the fuel tank 25 in the front and rear bonnets 27 and 28 caused by direct connection to the transmission case 7 and the front frame 8 through the inside of the hoods 27 and 28 is restricted by the column 18A of the canopy 18. The above-mentioned inconvenience can be eliminated, and maintenance of the engine 9 in the front and rear hoods 27 and 28 can be easily performed. Furthermore, by connecting the support frame 33 to the front axle case 12 using the U bolt 34, there is no need to form a connection portion for connecting the support frame 33 to the front axle case 12 by bolts. This facilitates the formation of the front axle case 12 and reduces costs.
[0030]
Reference numeral 12A shown in FIG. 3 and FIGS. 6 to 9 denotes a pair of upper and lower positioning engagements projecting from each front axle case 12 in order to prevent the U bolt 34 from being displaced with respect to each front axle case 12. 3, 6 and 7 is a muffler disposed below the left getting on / off step 30, and a reference numeral 36 shown in FIGS. 6 and 8 is a muffler on the right getting on / off step 30. It is a battery arranged below.
[0031]
[Another embodiment]
Hereinafter, other embodiments of the present invention will be listed.
(1) The riding type paddy working machine may be a riding type direct seeding machine to which a direct sowing device as an example of the paddy working device 4 is connected.
{Circle around (2)} An opening may be formed in each step 30 to directly connect the column 18A of the canopy 18 to the support portion 33C of the support frame 33.
(3) The positioning of the support frame 20 and the support stay 24 may be performed by engagement of a pair of left and right protrusions formed on the support frame 20 with a pair of left and right holes formed on the support stay 24. The positioning of the stay 24 and each bracket 26 may be performed by engagement of a pair of front and rear protrusions formed on the support stay 24 and a pair of front and rear holes formed on each bracket 26.
[Brief description of the drawings]
FIG. 1 is an overall side view of a riding type rice transplanter. FIG. 2 is an overall plan view of a riding type rice transplanter. FIG. 3 is a longitudinal sectional side view of a front half of the rice transplanter showing a support structure for a fuel tank and front and rear bonnets. Side view of a main part showing a positioning structure of a support frame, a support stay and a bracket [FIG. 5] A plan view of a main part showing a positioning structure of a support frame, a support stay and a bracket [FIG. 6] Rice transplanter showing a support structure of a canopy FIG. 7 is a longitudinal left side view of a main part showing a canopy support structure. FIG. 8 is a vertical right side view of a main part showing a canopy support structure. FIG. 9 shows a canopy support structure. Perspective view of main part [Explanation of reference numerals]
Reference Signs List 1 traveling body 8 front frame 9 engine 12 front axle case 18 canopy 18A column 20 support frame 20a hole 21 handle post 24 support stay 24a protrusion 24b hole 25 fuel tank 26 bracket 26a protrusion 27 front bonnet 28 rear bonnet 30 getting on / off step 33 Support frame B Boarding operation part D Mounting part P Swing fulcrum

Claims (2)

A support frame is provided across a front-facing front frame supporting an engine mounted on a front part of the traveling body and a front-right axle case, and a riding frame formed behind the engine is mounted on the support frame. Ride-type paddy working machine with a canopy column that covers the upper part of the driving unit. A support frame is provided across a front-facing front frame supporting an engine mounted on a front part of the traveling body and a front-right axle case, and a riding frame formed behind the engine is mounted on the support frame. Passenger having a canopy column that covers the upper part of the driving unit connected to the boarding operation unit so as to sandwich the step of getting in and out of the engine so as to be able to get on and off from the forward position of the fuselage. Type paddy working machine.

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