JP2011079485A - Vehicle body cover device for riding type rice-planter and riding type rice planter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To divide a vehicle body cover device without impairing strength, in a rice planter constituting a floor part and a shoulder part by utilizing the vehicle body cover device. <P>SOLUTION: The vehicle body cover device 25 is separably constituted into a front cover 27 having the floor part 26 and a rear cover 29 having the shoulder part 28. An upward wall part 30 is integrally molded on the rear edge of the front cover 27, and a downward wall part 31 is integrally molded on the front edge of the rear cover 29. Both wall parts 30 and 31 are fitted together in the vertical direction, and are held so as not to dislocate in the horizontal direction. The vehicle body cover device 25 can reduce labor of manufacture, carrying and storage by separating the front cover 27 and the rear cover 29. Since both covers 27 and 29 are separated in a place of the wall parts 30 and 31, there is no inconvenience of causing a step height in the floor part 26, and high rigidity can be held by the rib effect of the wall parts 30 and 31. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a riding type rice transplanter and a vehicle body cover device used therefor.

  The riding type rice transplanter includes a traveling vehicle body that is driven by an engine, and a planting device is disposed at the rear of the traveling vehicle body so as to be movable up and down. The vehicle body has a seat, and the left and right sides of the seat (and in some cases the back side of the seat) are shoulders that are higher than the floor, and the seedlings can be placed on the shoulders. Many (if fertilizer is provided, fertilizer supply is often placed on the shoulder.)

  The part on which the operator is placed, such as the floor and shoulders of the control area, is constituted by a vehicle body cover device, and this vehicle body cover device is fixed on a frame made of a frame material or the like. The vehicle body cover device is generally manufactured by blow molding using a synthetic resin as a material, and conventionally, the entire body including the floor portion and the shoulder portion has a single structure in many cases.

  However, when the riding type rice transplanter is increased in size, the body cover device is also increased in size. However, in the method in which the entire body cover device is integrated, there is a problem in terms of processing, transportation and storage due to the increase in size. In other words, the manufacturing die is increased in size and the processing cost is increased, and the problem that the transportation and storage become troublesome because it is very bulky has been revealed. Therefore, the vehicle body cover device is separated into a plurality of parts, and as an example, Patent Document 1 discloses that the vehicle body cover device is separated back and forth at the floor portion.

JP 2006-1462 A

  The body cover device is made of a resin molded product from the viewpoint of ease of manufacture and rust prevention, but it should be secured as high as possible because it is placed on a person. Strength is secured by providing ribs. However, when the front and rear members are separated at the floor portion as in Patent Document 1, the front parts basically have a flat plate structure, and thus it cannot be denied that they are easily bent and deformed by a downward load. For this reason, for example, there is a concern that a step is generated at the joint portion of the front and rear parts and the operator's foot is caught.

  The present invention has been made to improve the current situation. Furthermore, although the novel structure which is not in the past has been disclosed in the embodiments of the present application, these can also be independent inventions, and therefore it is possible to grasp as an object of the present application to provide an improved riding type rice transplanter. Is.

  The inventor of the present application pays attention to the fact that the vehicle body cover device has a wall portion extending in the left-right direction below the seat, and has completed the present invention through repeated efforts and research to utilize the characteristics of the wall portion.

  That is, the vehicle body cover device for a riding type rice transplanter according to the present invention is separated into a front cover having a floor portion on which an operator can put his / her foot in a seated state and a rear cover having shoulder portions located at least on the left and right sides of the seat. The upward wall portion provided at the rear edge of the front cover and the downward wall portion provided at the front edge of the rear cover are joined (maintained so as not to separate).

  The present invention includes suitable specific configurations as claimed in claims 2 to 4. Of these, in the invention of claim 2, the upward wall portion of the front cover and the downward wall portion of the rear cover have a concave shape in the backward direction in plan view. Moreover, in invention of Claim 3, in Claim 1 or 2, the upward wall part of the said front cover and the downward wall part of a back cover are horizontal by fitting with a groove-shaped fitting part and a male fitting part. It is held so that it cannot be displaced in the direction.

  Furthermore, in invention of Claim 4, in any one of Claims 1-3, the supporting member for supporting a seat with the shoulder part flame | frame arrange | positioned under the said back cover is provided in the shoulder part of the said back cover. The seat hole to be fitted and the oil supply hole for exposing the fuel supply port of the fuel tank arranged below the back cover are vacant.

  The present invention also includes a riding type rice transplanter, and the riding type rice transplanter includes the vehicle body cover device according to any one of claims 1 to 4.

  In the present invention, since the front cover and the rear cover are separated at the wall portion, there is no inconvenience that a step is generated at the joint portion of the front and rear covers as in Patent Document 1. In addition, the front cover has an upward wall integrally formed at the rear edge of the front cover, and a downward wall has been integrally formed at the front edge of the rear cover, so that the wall serves as a tough rib. Both the cover and the rear cover have a markedly higher section modulus with respect to downward load (relative to bending force). As a result, high rigidity can be secured and the quality improvement of the riding type rice transplanter can be contributed.

  Furthermore, if the structure of Claim 2 is employ | adopted, since the wall part of a front cover and a back cover is the shape bent in planar view, the rib effect will become still higher and the section modulus will become still higher, As a result, rigidity will become high. It can improve further and can suppress a bending of a floor part and a shoulder part more effectively.

  The upward wall portion of the front cover and the downward wall portion of the back cover can be fastened with a fastener such as a screw, but this takes time. On the other hand, when the fitting structure of the groove-shaped fitting portion and the male fitting portion is employed as in claim 3, both covers are held so as not to be displaced by simple fitting. This is an advantage of ensuring both shape stability. Moreover, since the location of the groove-shaped fitting portion has a double structure, it has the same reinforcing effect as when ribs are provided. Therefore, the wall portion is not easily deformed and the rigidity is further increased.

  In addition, since the wall portion has dimensions to the left and right, it is particularly preferable to provide a positioning auxiliary piece on the groove-shaped fitting portion as described in the embodiment because the fitting can be performed very easily. .

  Now, it is preferable that a person is placed on the shoulder portion of the back cover when carrying out operations such as seedling joining. Therefore, it is preferable that the shoulder portion also bends and does not deform as much as possible. Therefore, it is preferable to have high rigidity also from this aspect.) On the other hand, conventionally, a large hole for attaching a seat or a fuel tank is often provided in the shoulder portion of the vehicle body cover device, which makes it difficult to increase the rigidity. On the other hand, if the structure of claim 4 is adopted, it is only necessary to make the minimum necessary hole in the shoulder as the seat supporting means and the oiling means, for example, it is not necessary to make a large hole for inserting and removing the fuel tank. Therefore, the bending strength of the shoulder can be improved and high rigidity can be ensured.

It is a left view of the rice transplanter which concerns on 1st Embodiment. It is a perspective view only of the traveling vehicle body of a rice transplanter. It is a side view of a traveling vehicle body. It is a side view of the traveling vehicle body in a state where the vehicle body cover device is separated. It is a separated perspective view of a traveling vehicle body. (A) is a perspective view of the vehicle body cover apparatus in the state which attached the bonnet, (B) is a perspective view of only a vehicle body cover apparatus. It is a top view which made the vehicle body cover apparatus the main element. It is a bottom view which shows the support aspect of a vehicle body cover apparatus. It is a perspective view in the state where the body cover device was turned upside down. (A) is a partial perspective view of the front cover and the back cover (the back cover is turned over), (B) is a cross-sectional view of the fastening portion of the cover, and (C) is a cross-sectional view taken along line XC-XC in FIG. (D) is a figure which shows the modification of (C). It is a figure which shows the support structure of a seat, (A) is a side view, (B) is the perspective view which looked at the seat from the downward direction. It is a separation top view of the body cover concerning a 2nd embodiment. It is a separation top view of a vehicle body cover. It is a perspective view in the state where the front cover was turned over. It is a partial side view of a front cover. It is a fragmentary perspective view of a front cover.

  Next, an embodiment of the present invention will be described with reference to the drawings. This embodiment is applied to a riding type rice transplanter (hereinafter simply referred to as “rice transplanter”). In the following description, the words “front and rear” and “left and right” are used to specify the direction, but these words are based on the direction of the driver seated in the forward direction.

(1). Overview of rice transplanter Riding type rice transplanter is basically the same as the conventional one, and has a traveling vehicle body 1 and a seedling planting device 2 as major elements, and the planting device 2 is attached to the traveling vehicle body 1. The height is adjustable. Since the configuration of the planting device 2 is not related to the present invention, a detailed description thereof will be omitted.

  For example, as shown in FIG. 2, the traveling vehicle body 1 is provided with a seat 5 on which an operator sits and a steering handle 6 disposed in front of the seat 5. The seat 5 and the steering handle 6 are arranged at the left and right intermediate positions of the traveling vehicle body 1, and the steering handle 6 is provided in a steering mechanism section covered with front and rear split bonnets 7 and 8. Further, as shown in FIG. 1, preliminary seedling stands 9 are provided on the left and right sides in front of the seat 5, and a fertilizer application device 10 is provided behind the seat 5.

  For example, as shown in FIG. 5, the traveling vehicle body 1 includes left and right square steel pipe side frames 12 extending in the front-rear direction, a front frame 13 in which the left and right side frames 12 are connected at the front end portion, and left and right side frames 12. It has a left and right rear frame 14 connected to the rear end. A vehicle body frame (chassis) constituting a part of the framework of the traveling vehicle body 1 is configured with the side frame 12, the front frame 13, and the rear frame 14 as main members.

  In addition, a plurality of outward branch frames 15 that are laterally long and project outward are fixed to the left and right side frames 12 by welding, and are provided on the four left and right outward branch frames 15 that are positioned in front. 9 is attached. In addition, auxiliary frames 16 extending in the front-rear direction are arranged in parallel on the left and right outer sides of the side frame 12 in a plan view. The auxiliary frame 16 is welded to the outward branch frame 15. The auxiliary frame 16 is formed by bending an elevating step 16a.

  The side frame 12 is bent so that the front half is in a substantially horizontal posture and the rear half is in a rearward leaning posture with the front / rear intermediate portion as a boundary, and the seat 5 is disposed generally above the bent portion. ing. For example, as can be understood from FIG. 4, the engine 17 is disposed in a portion of the side frame 12 that is located below the inclined portion in a side view, and is positioned in front of the engine 17 and lower than the side frame 12. A transmission case 18 constituting the traveling transmission is arranged.

  The engine 17 is arranged in a posture in which the crankshaft extends in the left-right direction and the cylinder bore in a posture inclined backward, and the power of the engine 17 is transmitted to the input shaft of the transmission case 18 by a belt. A front axle device 20 is attached to the left and right side surfaces of the front portion of the transmission case 18, and the front wheel 3 is attached to the front axle device 20.

  As shown in FIGS. 1 and 4, a fuel tank 21 is disposed between the seat 5 and the engine 17. A rear axle case 22 is disposed behind the engine 17, and the rear wheel 4 is attached to the rear axle case 22. The rear axle case 22 and the rear frame 14 are connected by two right and left rear columns 23. A portion of the traveling vehicle body 1 on which a person is placed is covered with a resin vehicle body cover 25. This point will be described next.

(2). Vehicle Body Cover Device The vehicle body cover device 25 is configured to be separated into a front cover 27 having a floor portion 26 and a rear cover 29 having a shoulder portion 28. The shoulder 28 extends to the left and right sides and the back of the seat 5. The rear end edge of the front cover 27 and the front end edge of the rear cover 29 are recessed backward in plan view, and an upward wall portion 30 is integrally provided on the rear end edge of the front cover 27 so that the rear cover 29 A downward wall portion 31 is integrally provided at the front end edge, and the upward wall portion 30 and the downward wall portion 31 are fitted together. First, this connection structure will be described.

  As shown in FIG. 10C, the fitting structure of the upward wall portion 30 and the downward wall portion 31 is such that a groove-shaped fitting portion 32 having an upward opening is formed in the upward wall portion 30, and this groove-shaped fitting is performed. The lower end portion of the downward wall portion 31 is fitted into the portion 32. Therefore, in the present embodiment, the lower end portion of the downward wall portion 31 is the male fitting portion described in the claims.

  As shown in FIGS. 10C and 10D, the upward wall portion 30 is formed in the groove-shaped fitting portion 32 by forming the upper portion of the upper wall portion 30 with an outer peripheral plate 33 and an inner peripheral plate 34. However, the outer peripheral plate 33 is smoothly continuous with the lower portion thereof without any step, and the inner peripheral plate 34 protrudes behind the outer peripheral plate 33. For this reason, it is excellent in aesthetics. Further, the upper end portion of the inner peripheral plate 34 is an auxiliary piece 35 protruding above the upper end of the outer peripheral plate 33. Therefore, when the front cover 27 and the rear cover 29 are fitted together, the lower end portion of the downward wall portion 31 may be applied from the front to the auxiliary piece 34 of the upward wall portion 30 and shifted downward in that state.

  The upper and lower wall portions 30 and 31 have a considerable length in the left-right direction, and a processing error may occur, or a person may bend and deform it. For this reason, if the heights of the outer peripheral plate 33 and the inner peripheral plate 34 are the same, the fitting of the downward wall portion 31 into the groove-shaped fitting portion 32 may be troublesome, but as in the present embodiment. When the auxiliary piece 35 is provided, the downward wall portion 31 is positioned by the auxiliary piece 35, so that there is an advantage that the fitting can be performed very easily.

  As shown in FIG. 10A, the left and right end portions of the groove-shaped fitting portion 32 are bent portions 32a whose postures are changed so as to extend rearward, and the left and right end portions of the downward wall portion 31 are also facing rearward. The bent portion 31a is changed in posture so as to extend in the direction. Since the bent portions 31a and 32a exhibit a rib effect, the wall portions 30 and 31 have high rigidity at both right and left end portions, and are difficult to deform as a whole. The left and right ends of the groove-shaped fitting portion 32 are closed by the end plate 36, so that the strength is further improved.

  A drainage hole may be provided in the groove-shaped fitting portion 32. Further, as shown in FIG. 10B, it is also possible to form a groove-shaped fitting portion 32 in the downward wall portion 31 and form the upper end portion of the upward wall portion 30 as a male fitting portion. In this case, the lower end portion of the outer peripheral plate 33 becomes the auxiliary piece 35. The auxiliary pieces 35 do not necessarily have to be continuous in series, and can be formed in a jumping state or partially on the walls 30 and 31.

  As means for facilitating the fitting of the groove-shaped fitting portion 32 and the male fitting portion, for example, when the groove-shaped fitting portion 32 is formed on the upward wall portion, The lower end is formed flat when viewed from the front, while the groove-shaped fitting portion 32 is formed in a mountain shape when viewed from the front so that the left and right intermediate portions are the highest and lower toward the left and right ends. It is also possible to adopt a method of shifting from left to right and left. Alternatively, the same effect can be obtained even when the upper surface of the groove-shaped fitting portion 32 is set to the same height over the entire length and the lower surface of the downward wall portion 31 is formed in a convexly convex mountain shape when viewed from the front (downward wall portion). When the groove-shaped fitting part 32 is formed on 31, the vertical relationship is reversed.)

  In the present embodiment, the height dimension of the downward wall portion 31 of the rear cover 29 is larger than the height dimension of the upward wall portion 30 of the front cover 27, but both dimensions can be set arbitrarily. However, since the front end portion of the rear cover 29 is inclined for the purpose of allowing the seat to be moved forward, the downward wall portion 31 of the rear cover 29 has a restriction that a certain amount of height is required. It can be said that it is reasonable to make the downward wall portion 31 higher than the upward wall portion 30 as in this embodiment.

(3). Form and Support Structure of Car Body Cover Device Next, the form and support structure of the car body cover device 25 will be described. For example, as shown in FIG. 6, a front space 38 into which the bonnets 7 and 8 are fitted is formed in the front portion of the front cover 27 so as to be cut forward. On the inner periphery of the front space 38, an all-round upward piece 39 is formed so as to extend substantially all around, and the lower ends of the bonnets 7, 8 are fitted to the outside of the upward piece 39. Due to the rib effect of the upward pieces 39, the front cover 27 can ensure high rigidity. The upward piece 39 may be provided in a jumping manner. Further, the lower ends of the bonnets 7 and 8 are formed in a groove shape that fits the upward pieces 39, or conversely, the upward pieces 39 are formed in a groove shape having an upward opening and the lower ends of the bonnets 7 and 8 are formed in the grooves. It can also be fitted.

  A cylindrical portion 40 that opens upward is formed in a portion of the front cover 27 where the front space 38 is deepest. The tube portion 40 is a storage portion (drink holder) such as a plastic bottle or a water bottle. Further, downward reinforcing pieces 41 are formed on the front surface portion and the left and right outer peripheral portions of the front cover 27. Therefore, the front cover 27 as a whole has a shallow shell-like (or tray-like) appearance that opens downward. A large number of slits 42 are formed on the left and right sides of the front cover 27. In addition, a number of reinforcing ribs 43 that extend crossing each other are provided on the lower surface of the front cover 27. In FIG. 9, the rib 43 is shown only at the slit 42, but in FIG. 8 and the second embodiment described later, the rib 43 is formed on the entire surface.

  For example, as shown in FIG. 9, the front cover 27 has a plurality of holes 44 for exposing pedals and levers. Downward ribs 44 a are formed on the inner periphery of these holes 44.

  The front cover 27 is mounted on frames such as the left and right side frames 12, the front frame 13, the outward branch frame 15, and the auxiliary frame 16. For example, in FIG. 9, the portions mounted on these frames are shown as protrusions 45, but it is preferable that the reinforcing ribs 43 formed on the lower surface of the front cover 27 are supported by the frames. Further, as shown in FIGS. 5 and 9, an inward branch frame 46 extending upward from the mission case 18 is fixed to the left side frame 12, and the front cover 27 is also supported by the inward branch frame 46. ing. For example, the intermediate protrusion 47 is shown in FIG. 9 as a holding portion in the inward branch frame 46, but a group of reinforcing ribs 43 may be applied to the inward branch frame 46.

  The front cover 27 is also supported by the mission case 18. Therefore, in FIG. 9, a downward foot 48 is displayed as a support portion for the mission case 18. Needless to say, a plurality of legs 48 may be provided.

  The front cover 27 is provided with hook-shaped boss portions 50 projecting downward at four portions on the front, rear, left and right sides. The front boss part 50 is fixed to the outward branch frame 15. That is, as shown in FIG. 10B, the nut 51 is welded to the lower surface of the outward branch frame 15, and the boss portion 50 is fastened by screwing the bolt 52 into the nut 51 from above. The left and right boss portions 50 located at the rear are fastened to a support bracket 53 provided across the side frame 12 and the auxiliary frame 16. The boss 50 has a drain hole 54.

  For example, as shown in FIG. 5, below the rear cover 29 of the vehicle body cover device 25, a first intermediate frame 56 having a front view portal shape, a second intermediate frame 57 with a left and right longitudinal position located near the rear frame 14, Left and right third intermediate frames 58 fixed to the first intermediate frame 56 and the second intermediate frame 57 are arranged. The first intermediate frame 56 and the second intermediate frame 57 are supported by the side frame 12.

  These intermediate frames 56, 57 and 58 constitute the shoulder frame material described in the claims, and the rear cover 29 is supported by these intermediate frames 56, 57 and 58. The rear end portion of the auxiliary frame 16 is horizontal, and the rear cover 29 of the vehicle body cover device 25 is also supported by the rear end portion of the auxiliary frame 16. The vehicle body cover device 25 is fixed to the second intermediate frame 57 at two portions on the left and right sides. For this reason, the rear cover 29 is provided with a boss portion 50 that overlaps the second intermediate frame 57.

  For example, as shown in FIG. 11, a pair of left and right lower seat brackets 60 extending forward are fixed to the upper end portion of the first intermediate frame 56, while an upper seat bracket having left and right side plates 61a on the lower surface of the seat 5. 61 is fixed, and the left and right side plates 61a of the upper seat bracket 61 are rotatably connected to the left and right lower seat brackets 60 with left and right horizontally long pins 62. Therefore, the seat 5 can be moved forward around the pin 62. A columnar (or cylindrical) receiving body (spacer) 63 made of an elastic body such as rubber is fixed to the lower surface of the rear portion of the seat 5. The receiving body 63 is supported by the third intermediate frame 58 via the rear cover 29. Therefore, the receiving body 63 is disposed so as to overlap the third intermediate frame 58 in plan view.

  The seat 5 is a hollow molded product made of a resin material, and a longitudinally extending reinforcing rib 5a projects downward on the lower surface thereof. A stud bolt 64 is attached to the lower surface of the reinforcing rib 5a, and a nut is attached to the stud bolt 64. The upper seat bracket 61 is fastened to the seat 5 by screwing (not shown). The receiving body 63 is also attached to the reinforcing rib 5a. It is also possible to use a steel support instead of integrally forming the reinforcing rib 5a.

  As shown in FIG. 11, the upper seat bracket 61 is formed with three pin holes 65 in which the pins 62 are fitted in the front-rear direction, so that the front-rear position of the seat 5 can be adjusted in three stages. Even if the front / rear position of the seat 5 is changed, the receiving body 63 is supported by the third intermediate frame 58 via the rear cover 29. When the seat 5 is supported by the third intermediate frame 58 via the back cover 29 as in the present embodiment, it is not necessary to make a hole in which the receiving body 63 fits in the back cover 29, so that water such as rainwater is discharged from the engine 17. There is an advantage that it can be prevented or suppressed from dripping.

  For example, as shown in FIGS. 5 to 7, a bracket hole 66, a lever hole 67, and a lubrication hole 68 are formed in the front portion of the rear cover 29 that constitutes the vehicle body cover device 25. The bracket hole 66 is a hole for exposing the lower seat bracket 60 described above, the lever hole 67 is a hole for exposing the levers, and the oil supply hole 68 is an oil supply port (not shown) of the fuel tank 21. ), And a cap 69 shown in FIG. Although not shown in the drawing, a ring-shaped saucer in a plan view surrounding the oil filling port is disposed on the upper surface of the fuel tank 21 so as to receive spilled fuel. A drain pipe is provided on the tray, and fuel (gasoline) is safely discharged without being applied to the engine 17.

  As shown in FIG. 4, a vertically long forward protrusion 21 a is provided at a substantially right and left middle portion of the front end surface of the fuel tank 21. On the other hand, as shown in FIG. A long hole 31b into which the forward projection 21a is fitted is provided. The postures of the fuel tank 21 and the rear cover 29 are restricted from each other by the fitting of the protrusion 21a and the elongated hole 31b.

  The rear cover 29 does not have a large area hole such as a hole for inserting / removing the fuel tank 21 or a hole into which the seat 5 is fitted, and a bracket hole 66, a lever hole 67, and a lubrication hole 68 are necessary. Since only a hole with a minimum area is formed, the rear cover 29 can ensure high rigidity.

  As shown in FIGS. 2 and 5, a rear step 70 is disposed behind the rear cover 29. The rear step 70 can be integrally formed with the rear cover 29.

(4) Second Embodiment FIGS. 12 to 15 show a second embodiment. In this embodiment, the mat 71 is disposed inside the group of left and right slits 42 in the front cover 28. The mat 71 is made of rubber or soft resin, and is fixed to the front cover 28 with screws or the like. Even in the first embodiment, a mat is actually attached. The mat 71 can be divided into a plurality of members. However, if the mat 71 is a single product, it is easy to attach and has an advantage of a high anti-turning function.

  In the first embodiment, for example, as shown in FIG. 5, the drink holder 40 is formed on the front cover 28, but this is not provided in the present embodiment. As shown in FIG. 12, in this embodiment, the elevating step 16 a is fixed to the auxiliary frame 16 by welding. In addition, left and right fourth support frames 72 that branch off from the first intermediate frame 56 and extend substantially rearward are provided, and the fourth intermediate frame 56 is fixed to the second intermediate frame 57 in a state of being aligned with the rear portion of the auxiliary frame 16. Has been. The elevating step 16 a and the side frame 12 are connected by a side support 73.

  Further, the rear part of the lifting step 16a and the rear part of the auxiliary frame 16 are connected by a side-view side guard 74. That is, the side guide 74 is shaped like a downward opening, and the lower end of the front part is fixed to the lifting step 16a via a bracket, and the lower end of the rear part is fixed to the auxiliary frame 16 via the bracket. The upper part of the side guard 74 is an upward projecting portion positioned above the rear cover 29, and a grip (handrail: see reference numeral 84 in FIG. 16) gripped by a person can be attached to the upward projecting portion.

  Although the rear cover 19 is supported by the fourth intermediate frame 72 and the auxiliary frame 16, the side guard 74 serves as a support column that supports the upper portion of the fourth intermediate frame 72 and the upper portion of the auxiliary frame 16, so that the rear cover 29 is supported. There is an advantage that the strength can be improved. The side guard 74 can also be fixed to the horizontal portion of the auxiliary frame 16. Further, the side guard 74 does not necessarily protrude above the rear cover 29, and the side cover 74 can support the rear cover 29 from below.

  As shown in FIG. 14 (A), a number of reinforcing ribs 43 extending crossing each other are formed on the lower surface of the front cover 27, and these reinforcing ribs 43 are placed on the side frames 12 and the like. The fixing structure of the front cover 27 with respect to the framework is the same as in the first embodiment.

  As shown in FIG. 1, the cylinder head of the engine 17 is located at the rear part of the traveling vehicle body 1, and therefore, the cylinder head of the engine 17 is located below the rear part of the rear cover 29. Further, the engine 17 may perform simple maintenance mainly on the head portion, for example, such as replacing the spark plug or checking the air cleaner. Therefore, in this embodiment, as shown in FIGS. 12 and 13, a recess 75 opened rearward is formed in a substantially upper portion of the cylinder head of the engine in the shoulder portion 28 of the rear cover 29, The recess 75 is closed with a lid 76.

  Therefore, it is useful because simple maintenance can be performed by removing the lid 76 without removing the back cover 29 one by one. In the recess 75, an auxiliary recess 77 for drawing out the drive shaft of the fertilizer application 10 is formed in a state where it communicates. The lid 76 can be opened and closed using a hinge or the like.

  As shown in FIG. 14 (B), a receiving seat 77 in a stepped state is projected downward on both the left and right sides of the lid 76, while the receiving seat 77 is supported by the left and right third intermediate frames 58. The support piece 78 is welded, and the lid 76 is fixed to the third intermediate frame 58 by screwing the wing nut 80 into the stud bolt 79 fixed to the support piece 78. Therefore, the small cover 76 is detachable, and the wing nut 80 is hidden inside the receiving seat 77 so that it does not interfere with human walking. It is possible to use a hex nut instead of the wing nut 80 or screw it into the support piece 78 using a wing bolt. However, as in the present embodiment, the stud bolt 79 and the wing nut 80 are connected to each other. When used, there is an advantage that the small cover 76 can be positioned with one touch and can be easily attached and detached without a tool.

  In this embodiment, the fitting structure of the back cover 29 and the front cover 27 is slightly different. This point is displayed in FIG. That is, in the present embodiment, a large number of reinforcing ribs 81 are formed on the rear inner surface of the groove-shaped fitting portion 32 in the front cover 27 so as to fly off, and the left and right ends of the groove-shaped fitting portion 32 are open. . Although the upper end of the outer peripheral plate 33 constituting the groove-shaped fitting portion 32 is only slightly lower than the inner peripheral plate 34, the upper end surface of the reinforcing rib 81 is inclined so as to become lower as it approaches the outer peripheral plate 33. Since it is the guide surface 81 a, the downward wall portion 31 of the upward wall portion 30 can be easily fitted into the groove-shaped fitting portion 32.

  Needless to say, the presence of the reinforcing rib 81 increases the strength of the groove-shaped fitting portion 32, and the groove-shaped fitting portion 32 is open at both the left and right sides. Water drainage is ensured even without emptying. Furthermore, since the reinforcing rib 81 is provided and the guide surface 81a is provided on the reinforcing rib 81 in a state where the groove width of the groove-shaped fitting portion 32 is increased, the rear cover 29 can be more easily fitted.

(5). Variations There are models with different number of planting lines, such as 4-row planting, 5-row planting, 6-row planting, and 8-row planting. There are times when it becomes common. In this case, since the lateral width of the seedling planting device is different, at least the lateral lateral width of the shoulder portion 28 of the body cover 25 must be changed according to the lateral width of the seedling transplanting device 2.

  And although 1st Embodiment and 2nd Embodiment are 4 row planting models, as a measure at the time of applying this to 6 row planting, in the modification shown in Drawing 16, body cover 25 is 4 row planting. The auxiliary steps 82 are arranged on both the left and right sides of the shoulder portion 28 in the upward wall portion 30. A fifth intermediate frame 83 is provided to support the auxiliary step 82, and the fifth intermediate frame 83 is fixed to the side guard 74, the second auxiliary frame 57, etc. directly or via a bracket. A grip 84 is attached to the side guard 73.

  The six-row planting model has a slightly longer traveling vehicle body than the four-row planting model. Therefore, the rear step 70 is separated into a front member 70a and a rear member 70b. In short, the rear step 70 uses only the rear member 70b in the case of four-row planting, and uses the front and rear members 70a and 70b in the case of six-row planting, so that a different model is used. The members can be fully utilized in between, and as a result, the cost of the entire model group can be reduced.

(6). Others The present invention can be embodied in various ways other than the above embodiments. For example, the specific form (planar shape, side shape, etc.) of the vehicle body cover can be variously changed as necessary.

  The present invention can be embodied in a riding type agricultural machine such as a rice transplanter and has high utility. Therefore, it has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Traveling body 2 Seedling device 3 Front wheel 4 Rear wheel 5 Seat 6 Handle 7, 8 Bonnet 12 Side frame 14 Rear frame 15 Outward branch frame 16 Auxiliary frame 18 Mission case 21 Fuel tank 25 Car body cover device 26 Floor part 27 Front cover 28 Shoulder 29 Back Cover 30 Front Cover Upward Wall 31 Rear Cover Downward Wall 32 Groove Fitting 60 Seat Hole 61 Lubricating Hole

Claims (5)

A vehicle body cover device used for a vehicle body of a riding type rice transplanter,
An upward wall provided at the rear edge of the front cover, which is separated into a front cover having a floor portion on which an operator can put his / her feet in a seated state and a rear cover having shoulder portions located at least on the left and right sides of the seat And a downward wall portion provided at the front end edge of the rear cover,
Body cover device for riding rice transplanters. The upward wall portion of the front cover and the downward wall portion of the rear cover have a concave shape facing backward in plan view.
The vehicle body cover device for a riding type rice transplanter according to claim 1. The upward wall portion of the front cover and the downward wall portion of the rear cover are held so as not to be displaced in the horizontal direction by fitting the groove-shaped fitting portion and the male fitting portion.
The vehicle body cover device for a riding type rice transplanter according to claim 1 or 2. The shoulder portion of the back cover has a hole for a seat into which a support member for supporting the seat with a shoulder frame covered with the back cover is fitted as a seat support means. In the portion located below, there is an oiling hole for exposing the fueling port of the fuel tank arranged below the back cover,
The vehicle body cover device for a riding type rice transplanter according to any one of claims 1 to 3.   A riding type rice transplanter comprising the vehicle body cover device according to any one of claims 1 to 4.

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