JP2002045013A - Body structure for implement for paddy field - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hardly cause an inconvenience of bringing an implement or right and left step parts into contact with the other thing in transporting the implement by a truck or storing the implement in a storage barn while facilitating an operation of both right and left end parts of the implement with many operation rows by an operator. SOLUTION: Extension steps 33 constituted by connecting front step parts 33A to rear step parts 33B higher than the front step parts by longitudinal wall parts 33C are installed at the right and left of a traveling machine body 1, auxiliary steps 37 constituted by connecting front auxiliary step parts 37A to rear auxiliary step parts 37B higher than the front auxiliary step parts by auxiliary longitudinal wall parts 37C are installed at lateral outside parts of the extension steps 33, the front auxiliary step parts 37A are connected to the front step parts 33A in such a way that the front auxiliary step parts can change their positions around centers of axes P1 in the longitudinal direction relatively to the front step parts 33A and the auxiliary longitudinal wall parts 37C are connected to the front auxiliary step parts 37A in such a way that the auxiliary longitudinal wall parts can change their positions around centers of axes P2 in the right and left direction integrally with the rear auxiliary step parts 37B relatively to the front auxiliary step parts 37A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body structure of a paddy field working machine such as a rice transplanter or a direct sowing machine.

[0002]

2. Description of the Related Art Conventionally, in a body structure of a paddy working machine as described above, for example, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent Application Publication No. 168917, for example, by disposing an extension step that also serves as a rear fender to compensate for the difference between the left and right widths of the traveling body and the left and right widths of the working device, on the left and right sides of the traveling body. Is performed on the left and right ends of the working device (for example, when the working device is a seedling planting device, it is a seedling replenishing operation for the seedling placing portions on the left and right ends of the seedling mounting table, and the working device is a fertilizing device or a chemical In the case of a spraying device, it is a work of replenishing fertilizers or chemicals to the storage portions at both left and right ends).

[Second Prior Art] Conventionally, in a body structure of a paddy field working machine as described above, as disclosed in the above-mentioned publications and the like, the right and left sides of an engine mounted on the front part of a traveling machine body are known. By disposing, on both sides, a boarding / alighting step formed to extend from the front end of the boarding step laid on the boarding operation section formed behind the engine to the front end of the traveling body, the forward position of the aircraft with respect to the boarding operation section is provided. It was possible to get on and off from.

[Third prior art] Conventionally, in the body structure of a paddy field working machine as described above, for example, a Japanese Utility Model Application Laid-Open No. 6-61 is disclosed.
As disclosed in JP-A-81-81 and the like, the battery is fixedly provided by effectively utilizing the space below the stepping steps provided on both left and right sides of the engine.

[0005]

[Regarding the First Prior Art] In recent years, in a paddy field working machine, a work machine capable of performing a large number of work such as eight or ten works is connected to a traveling machine body to improve work efficiency. However, if the above-described first conventional technique is adopted in such a device, the number of working lines of the working device increases, and the difference between the left and right widths of the traveling device and the left and right width of the traveling machine body is increased. The larger the distance becomes, the larger the left and right sides of the work equipment will be, regardless of the increase in the number of work strips. In addition to facilitating the work performed on the parts, the working device is configured to be foldable into a storage state in which the left and right widths can be reduced to a size that can be accommodated within the width of the truck bed, and transported by truck. Time or Even if it is unlikely to cause the inconvenience of contacting the working device with other objects when storing in a store, etc., the entire step width of the traveling body including the left and right expansion steps remains large enough to protrude from the truck bed. From that
When transporting by truck or storing in a barn,
The inconvenience that the left and right step portions protruding from the truck bed easily come into contact with other objects is newly introduced.

[Regarding the Second Prior Art] The length from the front end of the boarding step to the front end of the traveling body depends on the front-rear length of the engine mounted on the front part of the traveling body, the arrangement of engine peripheral devices, and the like. Yes, the front-to-back length of the engine is affected by the size of the engine and the direction in which the engine is installed, which is determined by taking into account the work load that changes depending on the number of work units in the work equipment and the presence or absence of auxiliary work equipment. is there. Therefore, according to the above-described second related art, it is necessary to prepare a plurality of types of getting on and off steps having different front and rear lengths, so there is room for improvement in simplifying the configuration and reducing the manufacturing cost. .

[Third prior art]
According to the prior art, although the arrangement of the battery can be performed rationally, the step of getting in and out of the battery becomes a hindrance, which causes a problem that the maintenance and replacement of the battery becomes difficult.

[0008] A first object of the present invention is to facilitate the work performed by the operator on the left and right end portions of the working device irrespective of the increase in the number of working steps of the working device, while using a truck. A second object is to extend from the front end of the boarding step to the front end of the traveling machine body when transporting or storing in a barn, for example, to prevent inconvenience of bringing the working device and the left and right step portions into contact with other objects. The third object is to make it possible to share the steps of getting on and off regardless of the length so that it can be advantageous in terms of manufacturing. The purpose is to facilitate replacement.

[0009]

[Means for Solving the Problems] [Structure] In order to achieve the above-mentioned first object, according to the first aspect of the present invention, the foot position of the riding operation unit is provided on both left and right sides of the traveling body. A front step portion arranged at the same or substantially the same height as the boarding step laid on the rear step portion, a rear step portion located above the rear wheel, and a vertical wall portion connecting the front and rear step portions having different heights. A rear fender-equipped expansion step provided with, a front auxiliary step part disposed at the same or substantially the same height as the front step part on the lateral outside of the expansion step, and the rear step part; An auxiliary step having a rear auxiliary step portion arranged at the same or substantially the same height position and an auxiliary vertical wall portion connecting the auxiliary step portions before and after the different auxiliary height portions is arranged, and the front auxiliary step portion is provided. , Outside of the front step The auxiliary vertical wall portion is connected to the front step portion so that the operation position can be switched around the longitudinal axis between the action posture extended to the front step portion and the storage position retracted above the front step portion. An operating posture extending upward from a rear end of the front auxiliary step portion and a retracted posture folded over the front auxiliary step portion, and a left-right axis centered integrally with the rear auxiliary step portion. It was connected to the front auxiliary step part so that the posture could be switched around.

According to the first aspect of the present invention, when a traveling machine is connected to a working device capable of performing a large number of work, such as eight or ten, to improve work efficiency,
The left and right widths of the steps obtained by arranging the extension steps on the left and right sides of the traveling machine are set to fit within the width of the truck bed, and the difference between the left and right widths and the left and right widths of the work equipment is determined by the left and right auxiliary steps. If you make up for the left and right width, at the time of work,
By switching each of the front auxiliary step portion, the auxiliary vertical wall portion, and the rear auxiliary step portion to the operation posture and applying the auxiliary step, the left and right width of the entire step is extended by the left and right width of the left and right auxiliary steps. Can be made to be the same or almost the same as the left and right width of the working device, so that it is easy to work on the left and right ends of the working device that protruded laterally outward from the left and right expansion steps Will be able to

Conversely, when not working, each of the front auxiliary step portion, the auxiliary vertical wall portion, and the rear auxiliary step portion is switched to the storage position to store the auxiliary step, so that the left and right width of the entire step is reduced. Since the working device can be reduced by the width of the auxiliary step and can be accommodated within the width of the truck bed, the working device is placed in a storage state where the width of the working device can be reduced to a size that fits within the width of the truck bed. If it is configured to be foldable, it is possible to prevent the inconvenience of bringing the working device into contact with another object when transporting by truck or storing in a barn, and it is easy to bring the left and right step portions into contact with another object. Inconvenience can be avoided.

Moreover, when storing the auxiliary steps,
First, the auxiliary vertical wall portion is swung around the left-right oriented axis toward the front auxiliary step portion integrally with the rear auxiliary step portion, and then the front auxiliary step portion is connected to the auxiliary vertical wall portion and the rear auxiliary step portion. It swings around the axis in the front-rear direction toward the expansion step as a unit, so that when the auxiliary step is stored, the rear auxiliary step part stands up to the left and right center of the fuselage, and the front auxiliary Since the step portion and the auxiliary vertical wall portion stand up along the lateral outer edge of the expansion step, even in the state where the auxiliary step is stored, it is possible to secure a passage in the left and right expansion steps, Work on the left and right expansion steps and getting on and off using the left and right expansion steps can be performed well, and the auxiliary steps can be stored without the need for special holding tools by the action of the rear auxiliary steps. It is possible to hold the.

[Effects] Accordingly, while the working machine capable of performing a large number of works can be connected to the traveling machine body to improve the working efficiency, the operator performs the work on the left and right ends of the working device during the work. In addition to simplifying the work, it is possible to prevent the inconvenience of contacting the work equipment and the left and right step parts with other objects during non-work such as when transporting by truck or storing in a barn, and in addition to supporting steps. Regardless of the operation state and the storage state, work on the left and right expansion steps, getting on and off using the left and right expansion steps, etc. can be performed satisfactorily. Can now be held.

[Structure] In order to achieve the above-mentioned second object, according to the second aspect of the present invention, a foot of a riding operation section formed behind an engine mounted on a front portion of a traveling body. A boarding step laid at the position, and a boarding / alighting step arranged on both left and right outer sides of the engine so as to enable the boarding operation unit to get on and off from a position in front of the fuselage. A support frame configured to enable interposition and supporting the intermediate step on a support frame extending from the body frame so as to support a spare seedling mounting table disposed laterally outside the step of getting on and off the step. Equipped with a connection part that can be connected to members.

According to the second aspect of the present invention, the length from the front end of the boarding step to the front end of the traveling body is shortened by mounting a small engine by connecting the boarding step with the boarding step. By interposing an intermediate step between the boarding step and the boarding / alighting step, it is possible to cope with an increase in the length from the front end of the boarding step to the front end of the traveling body due to mounting of a large engine or the like. Will be able to do it.

That is, the step-in / step-out step is shared irrespective of the length from the front end of the step-in step to the front end of the traveling body, which varies according to the size of the mounted engine, and the configuration is simpler than the step-in / out step. Since the front and rear length of the entire boarding step from the front end of the boarding step to the front end of the traveling body is adjusted by the non-bulky intermediate step, when preparing a plurality of types of boarding steps with different front and rear lengths, In comparison with this, it is possible to simplify the configuration and facilitate component management, and to reduce the manufacturing cost.

[0017] A high-strength support frame extended from the body frame so as to support a spare seedling mounting table disposed laterally outside the step of getting on and off is effectively used, and the intermediate frame is attached to the support frame. Since the supporting members that support the intermediate steps are connected, the intermediate steps are provided with a high supporting strength while simplifying the configuration as compared with a case where a supporting frame dedicated to the intermediate steps having a high supporting strength is newly provided. Be able to support.

[Effect] Therefore, by allowing an intermediate step to be interposed between the boarding step and the getting on / off step,
The step-in and step-out steps can be shared irrespective of the length from the front end of the boarding step to the front end of the traveling body, simplifying the configuration and facilitating parts management, and supporting the spare seedling mounting table. The effective use of the supporting frame allows the intermediate step to be supported with high supporting strength while simplifying the configuration, which is advantageous in terms of manufacturing.

[Structure] In order to achieve the third object described above, according to the third aspect of the present invention, an airframe for a riding operation section formed behind an engine mounted on a front portion of a traveling airframe is provided. Below the step of dismounting, which is arranged on both left and right outer sides of the engine so as to enable getting on and off from the front position, the support frame on which the battery is mounted is placed at a high position close to the step of dismounting the aircraft. A displacement guide path for guiding between a predetermined mounting position stored and held in the vehicle, and a maintenance position exposed and held to the outside of the machine at a low position away from the getting on and off step, and the maintenance position and the machine body A guide member provided with a detachable guide path for guiding over an opening formed on the outer side is provided.

According to the third aspect of the present invention, the battery can be rationally disposed by effectively utilizing the space under the step of getting on and off, and the support frame is usually located at the mounting position. By doing so, the battery can be stored and held at a high position close to the getting on / off step within the lateral width of the fuselage, so that the battery can be effectively prevented from coming into contact with other objects when traveling over a ridge or the like. .

When maintenance such as inspection of battery fluid is performed, the support frame is moved along the displacement guide path to expose the battery to the outside of the machine at a low position away from the getting on / off step. Position so that the battery can be maintained without the inconvenience of getting on and off steps.

When the battery needs to be replaced, the support frame is moved along the attachment / detachment guide path.
The battery together with the support frame can be easily attached to and detached from the traveling body through the opening of the guide member, so that the battery can be easily replaced. By moving the battery along the guide route, the battery can be easily positioned at the mounting position.

[Effect] Therefore, the maintenance and replacement of the battery can be easily performed while the battery is rationally arranged in the space below the getting on / off step.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a riding type rice transplanter which is an example of a paddy field working machine, and FIG. 2 shows an overall plan view thereof. A 10-row planting seedling planting device 4 as an example of a working device is connected to a rear part of the traveling machine body 1 via a link mechanism 3 which moves up and down by operation of a hydraulic cylinder 2 so as to be able to move up and down freely. By mounting the fertilizer application device 5 for 10-row fertilization, which is an example of the apparatus, the apparatus is configured to be a mid-mount fertilizer application specification with 10 rows.

The traveling body 1 is of a four-wheel drive type that transmits traveling power from a prime mover 6 disposed at a front portion thereof to left and right front wheels 7 and a rear wheel 8. A boarding operation unit 11 including a steering wheel 9 and a driver's seat 10 operatively linked to the left and right front wheels 7 is formed.

In the seedling planting apparatus 4, while the four ground leveling floats 12 preliminarily level the seedling planting places with the traveling of the machine body, the working power from the prime mover 6 is transmitted to the left and right feed cases 13, With the distribution power from the feed case 13, the seedling mounting table 14 on which ten rows of mat-like seedlings can be mounted is reciprocated at a constant stroke in the left-right direction, and ten rotary planting mechanisms 15 are provided. However, it is configured to perform a planting operation of taking out a predetermined amount of seedlings from the lower end of the seedling mounting table 14 and planting them in a field.

The fertilizer applicator 5 has a total of 10 groove maker 16 mounted on each leveling float 12 as the machine body travels, and forms a fertilizer groove.
The base feeding mechanism 17 feeds out the fertilizer in the fertilizer hopper 18 by a predetermined amount, and the fertilizer fed out by each feeding mechanism 17 by the operation of the electric fertilizer application fan 19 through the guide hose 20 to the corresponding groove generator 16. , So that the fertilizer is buried at the lateral side of the planted seedling in the field.

As shown in FIG. 1, FIG. 3 and FIG. 4, the prime mover 6 includes a pair of left and right main frames 21 arranged in the front-rear direction.
A transmission case 22 is connected to a front end of the front case 23, and a front frame 23 extending forward from the transmission case 22 is provided.
In addition, a water-cooled three-cylinder diesel engine 24 is mounted and supported with its output shaft 24a facing left and right, and an electric cooling fan 26 is provided between the engine 24 and a handle post 25 standing upright behind the engine 24. A radiator 27 having a front-rear direction is disposed vertically, and a hydrostatic continuously variable transmission 28 is mounted on the left side of the transmission case 22 located behind the radiator 27 with the input shaft 28a facing left and right. The output shaft 24a of the engine 24 and the input shaft 28a of the hydrostatic continuously variable transmission 28 are connected to each other by a belt-type transmission mechanism 29.
, So as to be able to transmit through the transmission.

That is, the large three-cylinder engine 24 in which the length of the output shaft extending direction is longer than the length of the output shaft orthogonal direction.
Is mounted on the front part of the traveling body 1 with its longitudinal direction oriented left and right, so that it is formed on the front part of the traveling body 1 as compared with the case where the longitudinal direction is mounted longitudinally. The front-rear length of the prime mover 6 can be shortened, and the visibility of the work area below the front of the fuselage from the boarding / driving unit 11 can be improved. It can be improved.
In addition, since the front-rear length of the driving unit 6 is shortened, the total length of the body can be shortened, so that a turning space (a headland in a field) required for turning the body can be reduced.

As shown in FIG. 2 and FIGS. 4 to 7, in the traveling machine 1 of the riding type rice transplanter, a boarding step 30 laid at a foot position of the boarding operation unit 11, and an airframe for the boarding operation unit 11. A stepping-down step 31 disposed on both left and right outer sides of the engine 24 so as to enable getting on and off from the front position includes an engine (not shown) smaller than the engine 24 mounted on the riding type rice transplanter. Is used in a riding type rice transplanter for 6-row planting (see FIG. 7) on which is mounted.

By the way, the riding type rice transplanter for 6-row planting (see FIG. 7) has a front end of the boarding step 30 more than that of the 10-row planting due to the mounting of the small engine described above. The length L extending from the front end of the traveling body 1 to the front end of the traveling body 1 is short. Therefore, in the riding type rice transplanter for 10-row planting, the diversion of the boarding step 30 and the getting on / off step 31 used in the thing for 6-row planting only requires the boarding step 30 and the right and left getting on / off steps 31. A gap is formed between them, which hinders getting on and off the boarding operation unit 11 from a position in front of the fuselage.

Therefore, the boarding step 30 and the left and right getting on and off steps 3 used in the riding type rice transplanter for 6-row planting are described.
1 are arranged such that an intermediate step 32 can be interposed between them.
As shown in FIG. 6, when the left and right getting on / off steps 31 are connected to the boarding step 30, the length L from the front end of the boarding step 30 to the front end of the traveling body 1 is reduced by mounting a small engine or the like. It can correspond to that for planting, and as shown in FIG. 2 and FIGS.
If the intermediate step 32 is interposed between the boarding step 30 and the left and right getting on and off steps 31, the length L from the front end of the boarding step 30 to the front end of the traveling body 1 is increased by mounting the large engine 24 or the like. It can correspond to a long ten-row planting plant.

That is, regardless of the length L from the front end of the boarding step 30 to the front end of the traveling body 1 which varies depending on the size of the engine 24 mounted, etc.
While sharing 0 and getting on / off step 31,
By adopting the intermediate step 32, which is simpler and less bulky than the getting on / off step 31, it is possible to adjust the front-rear length of the entire getting on / off step from the front end of the getting on step 30 to the front end of the traveling body 1; As a result, as compared with the case of preparing a plurality of types of getting on and off steps 31 having different front and rear lengths, it is possible to simplify the configuration, facilitate parts management, and reduce the manufacturing cost, while also reducing the manufacturing steps. Regardless of the length L extending from the front end to the front end of the traveling body 1, it is possible to enable the boarding operation unit 11 to get on and off from a position in front of the body.

As shown in FIG. 1, FIG. 2, FIG. 5, FIG. 8, and FIG. 9, on both the left and right sides of the traveling body 1, extension steps for extending the step width to the maximum width that can be accommodated in the truck bed width. 33 are provided. Each of the left and right expansion steps 33 includes a front step portion 33A located at the same height position as the boarding step 30 and the getting on / off step 31, a rear step portion 33B located above the rear wheel 8, and front and rear portions having different heights. Vertical wall part 3 connecting the step parts 33A and 33B of
3C, and the like, and also serves as a rear fender structure.

As shown in FIG. 1, FIG. 2 and FIGS. 4 to 6, on the outer side of each of the left and right expansion steps 33, five spare seedling mounting tables 34 on which spare seedlings are placed These spare seedling mounts 34 are arranged side by side at an interval, and are supported by a support frame 35 extending from the front frame 23 which is an example of the body frame so as to function also as a reinforcing frame of the expansion step 33. Have been. Each of the left and right support frames 35 is provided with a connection portion 35A that can be connected to a support member 36 that supports the intermediate step 32.

That is, a supporting frame 35 having a high supporting strength and extended from the front frame 23 so as to reinforce the expanding step 33 and to support the plurality of spare seedling mounting tables 34.
Since the supporting member 35 for supporting the intermediate step 32 is connected to the supporting frame 35 by effectively utilizing the structure, the configuration is compared with a case where a supporting frame dedicated to the intermediate step having a high supporting strength is newly provided. , The intermediate step 32 can be supported with high support strength.

As shown in FIGS. 1, 2, 8 and 9,
Auxiliary steps 37 for extending the step width to near the left and right widths of the seedling mounting table 14 are disposed laterally outward of the left and right expansion steps 33. Left and right auxiliary steps 3
7 is a front auxiliary step portion 37A arranged at the same height position as the front step portion 33A, a rear auxiliary step portion 37B arranged at the same height position as the rear step portion 33B, and
Auxiliary step portions 37A, 37 before and after those having different heights
The auxiliary vertical wall portion 37C for connecting B is provided.

As shown in FIGS. 8 to 13, the front auxiliary step portion 37A is moved back and forth between an action position extending laterally outward of the front step portion 33A and a storage position retracted above the front step portion 33A. It is connected to the front step portion 33A in a state where the posture can be switched around the axis P1. The auxiliary vertical wall portion 37C has an action posture extending upward from the rear end of the front auxiliary step portion 37A and a front auxiliary step portion 37A.
With the storage position folded on
It is connected to the front auxiliary step portion 37A so that the posture can be switched integrally with the rear auxiliary step portion 37B. The rear auxiliary step portion 37B is connected to the auxiliary vertical wall portion 37C so that the angle with respect to the auxiliary vertical wall portion 37C can be changed around the axis P3 facing left and right.

On the other hand, as shown in FIGS. 12 and 13, the seedling planting device 4 has a left planting section 4A capable of planting four rows.
And a right planting portion 4B that can be planted for six rows, and each of the planting portions 4A and 4B swings around the first longitudinal axis P4 and the second longitudinal axis P5. The left and right widths are within the width of the truck bed from the working state in which the left and right planting sections 4A and 4B are connected in a forward posture so that 10 rows can be planted. The left and right planting parts 4A and 4B are divided so as to fit, and can be folded into a storage state in which the posture is changed to a horizontal posture. Reference numeral 38 shown in FIGS. 12 and 13 is a fixed frame connected to the rear end of the link mechanism 3, and reference numeral 39.
Are supported at the left and right ends of the fixed frame 38 so as to be able to swing around a first longitudinal axis P4, and the planting portions 4A and 4B corresponding to their free ends are able to swing around a second longitudinal axis P5. The swing frame is connected to the swing frame.

With the above-described structure, the traveling machine 1 is equipped with 10 seedling planting devices 4 capable of planting and 10 fertilizing devices 5 capable of applying fertilizer, so that work efficiency can be improved. Also, at the time of planting work, the front auxiliary step portion 37A, the rear auxiliary step portion 37B, and the auxiliary vertical wall portion 37C
Is switched to the operating position and the auxiliary step 37 is set to the operating state, so that the lateral width of the entire step can be made substantially the same as the lateral width of the seedling planting apparatus 4. It is easy to perform a seedling supply operation to the left and right ends of the seedling table 14 that protrudes laterally and outwardly from the side, and a fertilizer supply operation to the left and right ends of the fertilizer hopper 18 that is narrower than the seedling table 14. You can do it.

On the other hand, during the non-planting operation, the front auxiliary step portion 37A, the rear auxiliary step portion 37B, and the auxiliary vertical wall portion 3
Auxiliary step 3 by switching each of 7C to the storage posture
7 is stored and the seedling planting apparatus 4 is folded from the working state to the stowed state, so that the left and right width of the entire step and the left and right width of the seedling planting apparatus 4 can be accommodated within the width of the truck bed. When the truck is transported or stored in a barn, the extension step 33 and the auxiliary step 37 provided on both the left and right sides of the traveling machine 1 and the seedling planting device 4 configured for 10-row planting are used. Inconveniences of contacting the device can be reduced.

When the auxiliary step 37 is switched to the retracted state, first, the auxiliary vertical wall portion 37C is swung around the axis P2 facing left and right toward the front auxiliary step portion 37A integrally with the rear auxiliary step portion 37B. Then, the front auxiliary step portion 37A is swung about the longitudinal axis P1 toward the expansion step 33 integrally with the rear auxiliary step portion 37B and the auxiliary vertical wall portion 37C. 1
0, as shown in FIG. 11 and FIG.
In the storage state of, the rear auxiliary step portion 37B
Standing with the left and right center of the
7A and the auxiliary vertical wall portion 37C can be set up along the lateral outer edge of the expansion step 33, so that the left and right expansion steps 33
Can be secured, and work on the left and right expansion steps 33, getting on and off using the left and right expansion steps 33, etc. can be performed satisfactorily. Step 37 can be stably held in the stored state.

Further, since the angle of the rear auxiliary step portion 37B with respect to the auxiliary vertical wall portion 37C can be changed around the left-right oriented axis P3, the fertilizer application fan 19 of the fertilizer applicator 5 and the like are located above the auxiliary step 37. Even if there is, the auxiliary step 37 can be switched to the storage state without contacting the fertilizer applicator 5.

The reference numeral 37a shown in FIGS. 8 to 10 designates a pair of front and rear parts extended from the front auxiliary step part 37A to connect the front auxiliary step part 37A of the auxiliary step 37 to the front step part 33A of the extension step 33. These brackets 37a are provided with a front step portion 33A.
, And also functions as a stopper for preventing the front auxiliary step portion 37A from swinging downward from the operating posture. Reference numeral 40 shown in FIGS. 8, 9 and 11 denotes
An auxiliary frame made of a round pipe material is provided upright at the rear of the main frame 21 so as to support the rear step 33B of each of the left and right expansion steps 33. Reference numeral 41 shown in FIGS. In the operation state of (1), the auxiliary step 38 is fixedly held in the operation posture by being fitted inside the left and right ends of the auxiliary frame 38, so that the auxiliary step section 37B and the auxiliary vertical wall section 37C after the auxiliary step 37 are operated. In the storage state of, the burring hole 33a formed in the front step portion 33A of the expansion step 33 is inserted, so that the rear auxiliary step portion 37B and the auxiliary vertical wall portion 37C of the auxiliary step 37 are more stably stored in the storage posture. The auxiliary step 37B is provided on the auxiliary step portion 37B after the auxiliary step 37 so as to be slidably operable in a direction along the step surface so as to be in a state of being held. The is a connecting frame.

As shown in FIG. 4 and FIGS. 14 to 17, below the right getting on / off step 31, a frontward and rearward projecting outwardly from a front and rear wall of a support frame 43 on which the battery 42 is mounted. Of the support frame 43 by the engagement with the engagement pin 43A.
A predetermined mounting position a for storing and holding the vehicle at a high position close to the getting on / off step 31 within the lateral width of the aircraft;
A guide path 44A for guiding over a maintenance position b that is exposed and held to the outside of the body at a low position away from
And a pair of front and rear plate-like guide members 4 having a detachable guide path 44B for guiding over the maintenance position b and an opening c formed on the right outside edge outside the body.
4 are provided. Each guide member 44 has a first recess 44a for positioning the support frame 43 at a predetermined mounting position a and a second recess 44b for positioning the support frame 43 at a maintenance position b by engagement with a corresponding engagement pin 43A. The upper and lower parts of the right outer end of each guide member 44 are
The attachment / detachment guide path 4 is allowed to allow the passage of the engagement pin 43A.
A U-shaped connecting tool 44C is provided to connect while straddling 4B.

The front guide member 44 is supported by the right support frame 35, and the rear guide member 44 is supported by a frame rod 45 extending from the right support frame 35 to the front frame 23. ing.

The support frame 43 is formed in a box shape surrounding the lower half of the battery 42, and has a holding rod for placing and holding the battery 42 on the support frame 43 over the left and right side walls. 46 is detachably connected, and a handle 43B is provided on a right side wall thereof. The left side wall of the support frame 43 is connected to the right support frame 35 and the frame rod 45.
Between the connecting plate 47 and the bolt 48 with a knob screwed to the connecting plate 46 so as to be fixed at a predetermined mounting position a.

With this configuration, the battery 42 can be rationally disposed by effectively utilizing the space below the right getting on / off step 31, and the support frame 43 can be positioned at the mounting position a so that The battery 42 can be effectively prevented from coming into contact with another object when the vehicle runs over a vehicle. When maintenance such as inspection of battery fluid is performed, the support frame 43 is connected to the displacement guide path 4.
4A, the battery 42 can be easily located at the maintenance position b where the battery 42 is exposed to the outside of the machine at a low position away from the getting on / off step 31, so that the getting on / off step 31 becomes an obstacle. The maintenance of the battery 42 can be performed without inviting the battery.
By moving the battery 3 along the attachment / detachment guide path 44B, the battery 42 together with the support frame 43 can be easily attached to and detached from the traveling body 1 through the opening c of the guide member 44, and the battery 42 can be easily replaced. Can be done,
After the replacement of the battery 42, the support frame 43 is
By moving along 4B and the displacement guide path 44,
The battery 42 can be easily positioned at the mounting position a.

As shown in FIG. 1, FIG. 2, FIG. 18 and FIG. 19, a pair of left and right drawing markers 49 for forming the next running reference line in the field is provided at the front of the running body 1. Each drawing marker 49 has a first arm 49A connected to the traveling body 1 in a state in which the posture can be switched between a retracted posture along the body and an operation posture protruding laterally outward of the body around a vertical axis P6, and a tip end. The first arm 49A in a state in which the posture can be switched around the horizontal axis P7 between a lying posture in which the marker 49a provided for the vehicle enters the field and forms the next running reference line and an upright posture in which the marker 49a is separated from the field. Arm 49B, a first spring 49C for urging the first arm 49A to return to the retracted position, and a second arm 49
A second spring 49D for urging B to return to the lying posture is configured.

At the base end of each first arm 49A, an operation lever 50 that can be operated from the boarding operation section 11 is provided, and this operation lever 50 is pressed against the bias of the first spring 49C. The drawing marker 49 is operated by engaging with the engaging portion 33b provided in the corresponding extension step 33.
Can be held in the working posture.

As shown in FIGS. 18 to 21, each of the second arms 49B is moved from the falling posture to the standing posture with the upward swing of the link mechanism 3 when the seedling planting device 4 is raised to the predetermined upper limit position. A first operating wire 51, a lock mechanism 52, a second operating wire 53, and a swing arm 5 that can swing around the horizontal axis P <b> 8 so that the base end thereof can be switched.
4 and the like and linked to the link mechanism 3.

As shown in FIGS. 20 and 21, each lock mechanism 52 includes a first operation wire 51 and a second operation wire 53.
Engaging recess 5 formed in link 52A for interlocking and linking
2a, a locking arm 52B swingable about a horizontal axis P9.
Are engaged by the bias of the spring 52C, thereby holding the corresponding second arm 49B in the upright posture.
By releasing the engagement of the locking arm 52B with the engagement recess 52a by the shortening operation of the electromagnetic solenoid 52D linked to B, the corresponding second arm 49D by the second spring 49D.
It is configured to allow switching from the standing posture of B to the lying posture. The left and right electromagnetic solenoids 52D
The one corresponding to the operation direction is actuated based on the forward / backward swing operation of a neutral return type operation lever 55 provided at the lower right of the steering wheel 9 (see FIGS. 1 and 2). ).

As shown in FIG. 20, the left and right lock mechanisms 52 are disposed so as to be located between the left and right main frames 21. Thereby, each lock mechanism 52 is connected to the first frame.
Compared to the case where the arm 49A is equipped, the lock mechanism 5
2 can be made difficult to contact with other objects, and the weight of the drawing marker 49 can be reduced by the amount of the lock mechanism 52, so that the operation of the drawing lever 49 can be easily switched by the operation lever 50.

[Other Embodiments] Hereinafter, other embodiments of the present invention will be listed. As the paddy field working machine, a riding type rice transplanter configured by equipping the traveling body 1 with a seedling planting device 4 as an example of a working device and a chemical spraying device, or a direct sowing as an example of a working device on the traveling body 1 It may be a direct seeder or the like equipped with the device. The working device may be configured to be capable of performing a multi-step operation such as an 8-step or 12-step operation. The seedling planting device 4 may adopt a folding structure that enables the right and left ends or the left and right ends of the seedling planting device to be displaced upwards adjacent to them. As the auxiliary step 37, a rear auxiliary step part 37B may be connected to the auxiliary vertical wall part 37C so that the angle cannot be changed.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter for 10-row planting.

FIG. 2 is an overall plan view of a riding rice transplanter for 10-row planting.

FIG. 3 is a longitudinal sectional side view of a main part showing a configuration of a driving unit.

FIG. 4 is a cross-sectional plan view of a main part showing a configuration of a front part of the aircraft.

FIG. 5 is a plan view of a main part showing a support structure of an intermediate step.

FIG. 6 is a longitudinal sectional side view of a main part showing a support structure of an intermediate step.

FIG. 7 is an overall plan view of a riding rice transplanter for 6-row planting.

FIG. 8 is a partially cutaway plan view of a main part showing a configuration of an auxiliary step.

FIG. 9 is a side view of a main part showing a configuration of an auxiliary step.

FIG. 10 is a longitudinal sectional front view of a main part showing a configuration of an auxiliary step.

FIG. 11 is a partially cutaway plan view of a main part showing a storage state of an auxiliary step.

FIG. 12 is a schematic plan view showing a working state of the rice transplanter.

FIG. 13 is a schematic plan view showing a non-working state of the rice transplanter.

FIG. 14 is a cross-sectional plan view of a main part showing a battery support structure.

FIG. 15 is a longitudinal sectional side view of a main part showing a battery support structure.

FIG. 16 is a longitudinal sectional front view of a main part showing a state where a battery is located at a mounting position.

FIG. 17 is a longitudinal sectional front view of a main part showing a state where the battery is located at the maintenance position.

FIG. 18 is a plan view of a main part showing a configuration of a drawing marker.

FIG. 19 is a front view of a main part showing a configuration of a drawing marker.

FIG. 20 is a cross-sectional plan view of the main part showing the linkage between the drawing marker and the link mechanism;

21A is a side view of the main part showing the unlocked state of the lock mechanism. FIG. 21B is a side view of the main part showing the locked state of the lock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 8 Rear wheel 11 Boarding operation part 23 Body frame 24 Engine 30 Boarding step 31 Getting on and off step 32 Intermediate step 33 Expansion step 33A Front step part 33B Rear step part 33C Vertical wall part 34 Reserve seedling mounting table 35 Support frame 35A Connecting part 36 Support Member 37 Auxiliary Step 37A Front Auxiliary Step 37B Rear Auxiliary Step 37C Auxiliary Vertical Wall 42 Battery 43 Support Frame 44 Guide Member 44A Displacement Guide Path 44B Removable Guide Path P1 Axis P2 Axis a Mounting Position b Maintenance Position c Aperture

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tatsuya Sakai 64 Ishizukita-cho, Sakai-shi, Osaka F-term in Kubota Sakai Works (Reference) 3D003 AA15 BB13 CA20 CA54 CA55 DA02 3D022 AA02 AC08 AD01 AD05 AD06 AE01

Claims (3)

[Claims] 1. A front step portion disposed at the same or substantially the same height as a boarding step laid at a foot position of a boarding operation portion on both left and right sides of a traveling body, and a rear portion located above a rear wheel. A step portion and an extension step also serving as a rear fender provided with a vertical wall portion connecting the front and rear step portions having different heights are disposed, and the outer side of the extension step is the same or substantially the same as the front step portion. A front auxiliary step portion disposed at the same height position, a rear auxiliary step portion disposed at the same or substantially the same height position as the rear step portion, and an auxiliary vertical line connecting the front and rear auxiliary step portions having different heights. An auxiliary step having a wall portion is provided, and the front auxiliary step portion has an action posture extending laterally outward of the front step portion, and a storage position retracted above the front step portion, Posture cut around longitudinal axis The auxiliary vertical wall portion is connected to the front step portion so as to be replaceable, and the auxiliary vertical wall portion is provided with an action posture extending upward from a rear end of the front auxiliary step portion, and on the front auxiliary step portion. A body structure of a paddy field working machine connected to the front auxiliary step portion so that the posture can be switched around a left-right oriented axis integrally with the rear auxiliary step portion in the folded storage position. 2. A boarding step laid at a foot position of a boarding operation unit formed behind an engine mounted on a front part of a traveling body, and the boarding operation unit can get on and off from a front position of the body. And a stepping-off step disposed on both the left and right sides of the engine, so that an intermediate step can be interposed between the steps, and a spare seedling disposed on a laterally outer side of the stepping-off step. A body structure of a paddy working machine, wherein a support frame extending from the body frame to support the mounting table is provided with a connecting portion capable of connecting to a support member supporting the intermediate step. 3. A boarding / alighting step disposed on both left and right outer sides of the engine so as to enable a boarding operation section formed behind an engine mounted on a front part of the traveling body to get on and off from a front position of the body. Below, a predetermined mounting position for holding and holding the support frame on which the battery is mounted within the lateral width of the fuselage at a high position close to the step of getting on and off, and at a low position away from the step of getting on and off the fuselage outward. A guide member provided with a displacement guide path for guiding over a maintenance position for exposing and holding, and a detachable guide path for guiding over the maintenance position and an opening formed outside the body with respect to the maintenance position. The body structure of the paddy working machine.