JPH053076U - Body structure of riding mobile agricultural machine - Google Patents

Abstract

(57) [Summary] [Purpose] When running in a weak paddy field, make sure that the underside of the machine is at least about the height of the upper end of the front wheels so that the machine does not overwhelm the paddy rice. Smoothly manage and drive the high paddy rice paddles, and set the control device, driving steps and driving seat to the low position to prevent the aircraft from tipping over. [Structure] A front drive case 8 that pivotally supports a front wheel 9 and a rear drive case 13 that pivotally supports a rear wheel 14 hang downward below a mission case 5 and a main frame 10 that are integrally connected to each other so that a ground clearance is increased. The operation step 16 is provided near the upper part of the front drive case 8 and the main frame 10 so as to straddle the mission case 5, and the control device 15, the operation step 16 and the operation seat 15 are configured at low positions.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle body structure for carrying out management work by equipping a riding mobile agricultural machine with a control work machine, a planting device, a fertilizer applicator and the like in a replaceable manner.

[0002]

[Prior Art]

 In a conventional riding mobile agricultural machine, for example, as shown in FIG. 1 of JP-A-2-231276, a planting device is attached to the rear of the machine body, and the mission case and the main frame are integrally connected. The front wheels are axially supported by the front axle cases located on both the left and right sides of the mission case, and the rear wheels are attached to the rear axles that extend to both sides from the rear case attached to the rear part of the main frame. ing . The operation step is provided on the step frame supported by the main frame so as to cover the upper side of the mission case. An operating seat is provided on the rear cover supported by the seat frame.

[0003]

[Problems to be solved by the device]

 In order to carry out management work by mounting a pest control work machine instead of the planting equipment using the riding mobile agricultural machine disclosed in the above-mentioned JP-A-2-231276, a front axle case and a rear case of the riding mobile agricultural machine are disclosed. Since the wheel pivot position of the vehicle is relatively close to the aircraft in the height direction, the ground clearance is not so high, and the wheel sinks when running on the soft land of the paddy field and performing control work. If it does, there is a problem such as pushing down the grown rice. Further, if the front axle case and the rear case are simply extended vertically to increase the ground clearance, the positions of the driving steps, the driving seat, etc. become higher, the center of gravity rises, and the risk of the vehicle tipping down increases.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the technical means taken by the present invention is to mount an engine frame mounted with an engine covered with a bonnet on the front part of a mission case and to erect a seat frame on the rear part of the mission case. The main drive frame is integrally connected, and the front drive case extends from both left and right sides of the mission case and hangs down. The upper end of the front wheel is configured to be long downward so that it is located at substantially the same height as the lower surface of the mission case, and the rear drive case, which is attached to the rear of the main frame and extends to both left and right sides, has a large diameter. In order to support the rear wheel, the rear drive case is vertically installed so that the upper portion of the rear wheel is slightly bulkier than the upper portion of the main frame in a side view. Serial to provided urchin operation step by straddling the transmission case near above the main frame and is characterized in that a driver's seat in the rear cover attached taken to the seat frame at the rear above the operation steps.

[0005]

[Action]

 In order to prevent the machine from pushing down the paddy rice at the front wheel at least when running on a soft paddy when carrying out the work by installing the pest control work machine and the top dressing machine, etc. on the machine that manages the riding mobile agricultural machine respectively. The height is about the same as the height of the upper end of the. In other words, a transmission case that integrally connects a front drive case that pivotally supports the front wheels and a rear drive case that pivotally supports the rear wheels and the ground frame are hung down from the main frame to increase the ground height, thereby increasing the length of paddy rice. You can run smoothly between the two and perform management work. In addition, driving steps were installed near the upper part of the front drive case and the main frame so as to straddle the mission case, and the driving seats of the driving steps and the rear cover were set to a low position, and the position of the center of gravity was lowered.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is a riding mobile agricultural machine, and an engine 2 covered with a hood 2a is arranged on an engine base 3a on an engine frame 3 at the front part of the body of the riding mobile agricultural machine 1. Is attached to the mission case 5 to which the power of is transmitted by the engine pulley 2b, the belt 4, and the input pulley 5a. To turn on / off the power to the mission case 5, the driver operates the petal 6 pivotally supported at the rear end of the lower end of the mission case 5 to operate the tight pulley 7a at the tip of the belt clutch arm 7 via the link 6a. Done.

Then, the transmission case 5 is rotatably supported by front wheels 9 and 9 having a small diameter via front drive cases 8 and 8 which hang down on the left and right sides of the transmission case 5, and the power input to the transmission case 5 is transmitted to the transmission case 5. Transmitted. The front drive cases 8 and 8 are extended downward so that the upper ends of the outer circumferences of the front wheels 9 and 9 are substantially level with the lower surface 5b of the mission case 5 in a side view. Further, a rear frame 10a is provided at the rear ends of the left and right main frames 10 that are integrally connected to the mission case 5 and that are located lower than the upper surface 5c of the mission case 5. A central case 13a of rear drive cases 13 and 13 to which power is transmitted from the transmission case 5 through a transmission shaft 11 and a vertically long transmission case 12 is attached to the rear frame 10a, and the central case 13a is extended to the left and right. The central case 13a is configured to be transmitted to left and right rear wheels 14 and 14 axially supported by the rear drive cases 13 and 13 hanging vertically from the left and right ends of the central case 13a.

Therefore, the ground clearance of the transmission shaft 11 is made large by interposing the transmission case 12. Further, by vertically arranging the rear drive cases 13 and 13, the outer peripheral upper ends of the large-diameter rear wheels 14 and 14 are made higher than the upper part of the main frame 10, and the extension line of the upper surface 5c of the mission case 5 is extended. It is configured to be approximately the same height as the height of the ground to ensure sufficient ground clearance.

Further, a seat frame 10b on an intermediate portion of the main frame 10 is provided with a driving seat 15 for a driver to sit down and operate a steering device 15a such as a steering wheel. 15 is provided on the rear cover 17 on the operation step 16. The operation step 16 is located on both sides of the mission case 5, is installed at a low position so as to straddle the mission case 5, and is attached to the main frame 10. Therefore, the height positions of the driving seat 15 and the driving step 16 are configured to be lower than the conventional position with respect to the upper surface 5c of the mission case 5.

A fuel tank 18 is provided in the main frame 10 inside the rear cover 17 below the operation seat 15, and the fuel is transferred from the fuel tank 18 to the engine 2 via the pump P and the hoses 19 and 19a. Is supplied. A battery 21 is attached below the driving seat 15 on the main frame 10. Conventionally, the fuel tank 18 is arranged in the bonnet 2a above the rear part of the engine 2, but by positioning the fuel tank 18 below the operation seat 15, the height of the control device 15a can be increased. The height of the seat 15 and the operation step 16 is set to be low.

On the left and right columns 22, 22 which are erected on the main frame 10 below the driving seat 15, an upper link 23 extending rearward and a lower link 24 below the upper link 23 near the main frame 10 are provided. 24 is pivotally supported, a hitch 25 is attached to the rear ends of the upper link 23 and the lower links 24, 24, and the hydraulic cylinder 20 whose one end is attached to the transmission case 5 can move up and down. .. A work machine frame 26 is set on the hitch 25, and power is transmitted from the mission case 5 to the work machine frame 26 through a PTO shaft 27, a universal joint 28, ..., and an intermediate shaft 29. A power sprayer 31 that is transmitted to and is driven by the transmission mechanism 30 including a speed change pulley / belt is attached.

Further, columns 32 and 33 are mounted on the left and right rear drive cases 13, 13 and tank frames 34 and 35 configured in a plan view rectangular shape are attached to the upper portions of the columns 32 and 33, respectively. Solution tanks 36 and 37 are mounted above the tank frames 34 and 35. An aqueous solution of a drug (eg, an emulsifying agent or a wettable powder) is put in the solution tanks 36, 37 to prevent precipitation of the aqueous solution and clogging of a filter 38 connected to the discharge ports 36a, 37a of the solution tanks 36, 37. In order to prevent this, the stirring impellers 41 and 42 in the solution tanks 36 and 37 are rotated to perform stirring.

The rotation of the stirring impeller 41 provided in the solution tank 37 is controlled by the drive sprocket 45 mounted on the PTO shaft 27 which is built in the case 43 fixed to the main frame 10 and drives the power sprayer 31. The driven sprocket 47 is driven via the chain 46, and the flexible wire 50 having one end attached to the shaft 47a of the driven sprocket 47 is supported by the bearing 51 provided at the bottom of the solution tank 36 at the other end. The stirring impeller 41, which is disposed without being interfered with by the constituent members such as the port 15 and has its tip inserted through the solution tank 37, is rotated. The stirring in the solution tank 36 drives the driven sprocket 47 from the drive sprocket 45 fixed to the PTO shaft 18 via the chain 46, and is meshed with the gear 48 provided on the shaft 47a of the driven sprocket 47. One end of the flexible wire 52 is attached to the front side of the shaft 49a of the gear 49, and the other end of the flexible wire 52 is curved so as to be supported by a bearing 53 provided in the lower portion of the solution tank 36, and a component member such as the operation seat 15 is formed. It is arranged without being interfered with by and is inserted into the solution tank 36, and the stirring impeller 42 provided at the tip thereof is rotated to perform stirring.

The aqueous solution of the drug stirred in the solution tanks 36 and 37 flows out from the hoses 36b and 37b connected to the discharge ports 36a and 37a at the lower end of the solution tanks 36 and 37, and the hose 55 to which the hoses 36b and 37b are joined. A filter 38 is provided midway, and the power sprayer 31 inhales and discharges via the hose 55. The water solution discharged from the power sprayer 31 is, as shown in FIG. 5, a boom 61 attached to the rear portion of the working machine frame 26 and a boom 62 connected left and right by electric cylinders 64, 64. , 63 are held in the working state by controlling the height of the paddy rice, etc. by hydraulic cylinders 61b for horizontal control horizontally, and the hoses 61a, 62a and 63a of the booms 61, 62 and 63 are attached. It is supplied to the nozzles 65, and sprayed in the form of mist to control paddy rice and the like.

Further, FIG. 2 shows a state in which the left and right booms 62, 63 are folded forward from the fulcrum 61b at the end of the boom 61 with electric cylinders 64, 64 and stored on the side of the machine body. The left and right booms 62, 63 are stored by folding the ends of the booms 62, 63 back to the rear of the machine. Then, when the valve 68 provided on the hose 66a is closed, that is, when the drug is not sprayed, the aqueous solution of the drug discharged from the power sprayer 31 passes from the pressure adjusting valve 66 to the solution tank via the hose 66a. Returned to 37.

In the above structure, the engine 2 is disposed on the engine frame 3 in the front part of the machine body, the engine frame 3 is attached to the mission case 5, and the front drive case 8, which is hung from the mission case 5, Front wheels 9 and 9 of small diameter pivotally supported on 8 and a rear drive case 13 mounted on a rear frame 10a of a main frame 10 integrally connected to a mission case 5, and a large rear wheel 14 pivotally supported on a rear drive case 13; 14, the distance from the ground is large, that is, the lower surface of the machine body is made to be at least about the same as the upper end height of the front wheels 9 and 9, and the control is performed on the riding mobile agricultural machine 1 that performs management work with a higher ground height. When carrying out pest control work with a work machine, smooth running is possible without problems such as pushing down the paddy rice with the machine even when running through the long paddy rice rows in the soft paddy field. Further, the operation step 16 on the mission case 5 is provided so as to straddle the mission case 5 and is attached to the main frame 10, and the operation device 15a, the operation step 16 and the operation seat 15 on the rear cover 17 are arranged at a low position. The fuel tank 18 and the battery 21 are provided below the operation seat 15 to lower the center of gravity to prevent the body from falling.

When the riding mobile agricultural machine of the present invention is used as a riding rice transplanter equipped with a fertilizer application, the rear working machine attached to the hitch 25 is a planting apparatus as disclosed in the above-mentioned JP-A-2-231276. The solution tanks 36 and 37 are removed from the machine body, and the drive mechanism from the PTO shaft 27 is also removed. Also, by replacing the rear working machine with a deep fertilizer machine, it can be used as a top-dressing machine for paddy rice. In this case, a fertilizer tank for paste-like or liquid fertilizer is mounted on the machine body, and is connected to the deep-layer fertilizer applicator by an appropriate hose, and the fertilizer pump is driven by the drive mechanism from the PTO shaft 27 to form a fertilizer applicator.

[0018]

As described above, according to the present invention, the engine frame for mounting the engine covered with the hood is attached to the front part of the mission case, and the main frame is provided with the seat frame standing upright at the rear part of the mission case. In order to pivotally support a small diameter front wheel to the front drive case that is integrally connected and extends from both left and right sides of the mission case and hangs down, the front drive case has the upper end of the front wheel in the side view. It is configured to be long downward so that it is located at approximately the same height as the lower surface of the mission case, and is attached to the rear of the main frame and extends to the left and right sides, and a large rear wheel is pivotally supported by the rear drive case that hangs down. However, the rear drive case is vertically installed so that the upper part of the rear wheel is slightly higher than the upper part of the main frame in a side view, and the front drive case and the main frame are arranged vertically. The operation step is provided near the upper part of the chassis so as to straddle the mission case, and the operation sheet is provided on the rear cover attached to the seat frame above the rear part of the operation step. Is at least about the same as the height of the upper end of the front wheels, and the ground clearance is raised to ensure smooth management without any problems such as pushing down the paddy rice with the aircraft even when it is running between the rows of paddy rice with high length in soft rice fields. it can. In addition, the operating steps are provided so as to straddle the mission case, and the control device, operating steps and the operating seat on the rear cover are configured to be in a low position, and the center of gravity is lowered to prevent the aircraft from falling. ..

[Brief description of drawings]

FIG. 1 is a side view of a riding mobile agricultural machine.

FIG. 2 is a plan view of a riding mobile agricultural machine.

FIG. 3 is a cross-sectional view of a main part of a riding mobile agricultural machine.

FIG. 4 is a cross-sectional view of a main part of a riding mobile agricultural machine.

FIG. 5 is a schematic diagram of a working state of a working machine.

[Explanation of symbols]

 2 engine 2a bonnet 3 engine frame 5 mission case 8 front drive case 9 front wheel 10 main frame 10b seat frame 13 rear drive case 14 rear wheel 15 driving seat 16 driving step 17 rear cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masahiro Kuwagaki 667 Isuya-cho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd.

Claims (1)

[Claims for utility model registration] [Claim 1] An engine frame 3 for mounting an engine 2 covered with a bonnet 2a is attached to a front portion of a mission case 5, and a seat frame 10b is provided upright at a rear portion of the mission case 5. The main drive frame 8 is integrally connected to the front drive case 8 extending from both the left and right sides of the transmission case 5 and hanging down from the front drive case 8 so that the front drive case 8 is laterally supported. As viewed, the upper end of the front wheel 9 is configured to be elongated downward so as to be positioned at substantially the same height as the lower surface of the mission case 5, and the main frame 10 is also provided.
A large diameter rear wheel 14 is pivotally supported by a rear drive case 13 which is attached to the rear side and extends to both left and right sides and hangs down, and when the rear drive case 13 is viewed from the side, the upper portion of the rear wheel 14 is the main frame. 10 is vertically arranged so as to be slightly higher than the upper part, and is provided with the front drive case 8 and the main frame 10.
An operating step 16 is provided near the upper part of the vehicle so as to straddle the mission case 5, and an operating seat 15 is provided on a rear cover 17 attached to the seat frame 10b above the rear part of the operating step 16, the riding mobile agricultural machine. Car body structure.