JP2017104066A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work vehicle capable of adjusting a fertilization amount to be the same right/left in a fertilization device arranged while divided right/left.SOLUTION: A work vehicle includes a floor step 4 in a main frame 3 supported so as to travel in a field and includes a fertilization device capable of operating in linkage with travel with a transmission shaft. The fertilization device is configured by two fertilization blocks arranged right/left in the floor step 4. Right/left fertilization frames 8, 8 supporting the right/left fertilization blocks overhang right/left from the main frame 3 and right/left front frames 3a, 3b fixing a front side of the right/left fertilization frames 8, 8, respectively are arranged in the main frame 3. Thereby, work space is ensured and right/left stable fertilization is also enabled.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a work vehicle including a floor step, which is a work space, in a machine body equipped with a fertilizer application apparatus.

  Some work vehicles such as a seedling transplanter that performs operations such as planting seedlings in a farm field include a fertilizer application device that supplies fertilizer to the farm field. In the prior patent documents, work space is secured by providing fertilizer application devices on the left and right of the traveling vehicle body, and work efficiency such as seedling replenishment work from the seedling stand at the front of the machine body to the seedling transplanting device at the rear can be improved. .

Japanese Patent Laying-Open No. 2015-163057

However, in the conventional fertilizer application, the weight balance of the left and right fertilizer application and the left and right fertilizer operation adjustment are insufficient due to the influence of the arrangement of the driving force transmission member and fertilizer adjustment device to the fertilizer. As a result, the amount of fertilizer applied differs in the fertilizer application, and as a result, the growth of seedlings differs from place to place, so that the work time for subsequent processes such as harvesting is not complete, and the quality of the harvested product is reduced.
Moreover, the drive part and fertilization amount adjustment mechanism of the prior patent document are provided at the rear lower part of the floor step, and there are problems that it is difficult to adjust the fertilization amount and safety problems due to rotation of the drive shaft.

  An object of the present invention is to provide a work vehicle that enables the left and right fertilizer application to be adjusted with respect to a fertilizer that is divided into left and right.

  The invention according to claim 1 is a work vehicle including a floor step (4) on a main frame (3) supported so as to be able to travel on a farm field, and a fertilizer device capable of traveling interlocking operation by a transmission shaft. The left and right fertilization frames (8, 8) that support the left and right fertilization blocks (7, 7) are constituted by two fertilization blocks (7, 7) arranged on the left and right of the floor step (4). The left and right front frames (3a, 3a) are provided on the main frame (3) so as to project from (3) to the left and right and to fix the front sides of the left and right fertilization frames (8, 8), respectively. .

  The invention according to claim 2 is the invention according to claim 1, wherein the transmission shaft is connected to one of the left and right fertilization blocks (7, 7) via a fertilization amount adjusting section (13) for adjusting the fertilization operation amount. A first transmission shaft (12) for transmitting fertilization power and a second transmission shaft (14) for transmitting the fertilization power between the left and right fertilization blocks (7, 7). 12) and the second transmission shaft (14) are arranged below the floor step (4) and the left and right fertilization blocks (7, 7).

  According to a third aspect of the present invention, in the second aspect of the invention, a transmission case (11) for branching the traveling power from the traveling support portion of the main frame (3) is provided, and the transmission case (11) and the first A first adjustment rod (11a) for connecting the transmission shaft (12), and a left and right second adjustment rod (14b) for connecting the second transmission shaft (14) and the left and right fertilization blocks (7, 7), respectively. 14b), and the lengths of these adjusting rods (11a, 14b) can be adjusted.

  The invention according to claim 4 is the invention according to claim 2 or 3, wherein the rear frames (3b, 3b) for fixing the rear portions of the left and right fertilization frames (8, 8) are respectively connected to the left and right sides of the main frame (3). The fulcrum (14a, 14a) of the second transmission shaft (14) is provided respectively, and the fulcrum (14a) of the second transmission shaft (14) on the same side as the fulcrum of the fertilizer application amount adjusting unit (13) The fertilizing frame (8) and the rear frame (3b) are connected at an intermediate position.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the left and right air ducts (22, 22) supplying the left and right fertilization blocks (7, 7) from the inner position of the machine body. ) And left and right remaining discharge ducts (23, 23) for discharging residual fertilizer to the outside position of the fuselage, and discharge openings (23a, 23a) that can be opened and closed to these left and right remaining discharge ducts (23, 23). Respectively.

  The invention according to claim 6 is the invention according to claim 5, wherein an air chamber (22a) communicating the left and right air ducts (22, 22) is provided along a rear edge of the floor step (4). The left and right remaining discharge ducts (23, 23) are supported forward and downward from the left and right ends (22b, 22b) of the air chamber (22a), and the front ends serve as the discharge ports (23a, 23a). To do.

By providing the fertilization frames (8, 8) on the left and right sides of the aircraft according to the invention according to claim 1, two fertilization blocks (7, 7) can be arranged on the left and right of the main frame (3), Durability can be improved by fixing the left and right fertilization frames (8, 8) to the main frame (3) by the left and right front frames (3a, 3a), respectively.
Further, by arranging the two fertilization blocks (7, 7) separately on the left and right sides of the traveling vehicle body, the work space is widened, the workability is improved, and the balance of the traveling vehicle body is also improved.

  According to the invention according to claim 2, in addition to the effect of the invention according to claim 1, the fertilization power is adjustable from the first transmission shaft (12) by the fertilization amount adjustment section (13) so that the fertilization power can be adjusted. And transmitted to the other fertilization block (7) via the second transmission shaft (14), and the first transmission shaft (12), which is a transmission constituent member, the fertilization amount adjusting section (13), Since the second transmission shaft (14) is arranged below the floor step (4) and the left and right fertilization blocks (7, 7), the floor step (4) and the fertilization block (7, 7) are guards for the transmission system. It plays a role of and improves safety. Moreover, the work space on the floor step (4) is not disturbed.

  According to the invention according to claim 3, in addition to the effect of the invention according to claim 2, the length-adjustable adjusting rods (11a, 14b) provided at three locations allow the left and right fertilization blocks (7, 7) to be minimally configured. ) Can be adjusted so that maintenance can be performed efficiently.

  According to the invention according to claim 4, in addition to the effect of the invention according to claim 2 or 3, the fulcrum of the fertilizer application amount adjusting part (13) is intermediate between the fulcrum (14a) of the second transmission shaft (14) on the same side. By connecting the fertilizer frame (8, 8) and the rear frame (3b) in position, it is possible to reduce variations due to machine differences, and there is no need to provide an extra transmission shaft or length adjustment mechanism, thus reducing costs. Can be reduced.

According to the invention according to claim 5, in addition to the effect of the invention according to any one of claims 1 to 4, the blower ducts (22, 22) are on the inside of the machine body, and the remaining amount discharge ducts (23, 23) are on the outside of the machine body. Accordingly, the manure can be discharged from the outside of the machine body by opening the left and right discharge ports (23a, 23a), so that the work efficiency is good.
Further, by separating the discharge of the fertilizer on the left and right, it is not necessary to switch the duct and the air direction for collecting the remaining fertilizer into one when discharging the fertilizer. In addition, air direction switching parts and the like are not required and can be configured at low cost.

  According to the invention according to claim 6, in addition to the effect of the invention according to claim 5, the residual discharge ducts (23, 23) on the left and right outer sides are supported by the front lowering to the discharge ports (23a, 23a). The fertilizer can be easily removed by its own weight to improve the discharge speed, and it can be discharged even with a small amount of air. In addition, maintenance is improved because water and fertilizer are not stored, preventing rainwater from entering.

The top view (a) and side view (b) which show the principal part of the riding rice transplanter which concerns on invention Plan view of main parts of fertilizer transmission system Side view of main part of fertilizer transmission system Rear view of main parts of fertilizer transmission system Plan view of main parts around fertilizer application equipment Left side view of main part of left fertilizer block Side view (a) and main part enlarged perspective view (b) of work vehicle Perspective view (a) and cross-sectional view (b) of sub-step part

  Embodiments of the invention specifically configured based on the above technical idea will be described below in detail with reference to the drawings. In the description, the front and rear and the left and right are referred to based on the forward direction (F) of the aircraft.

  FIG. 1 is a plan view (a) and a side view (b) showing a main part of a riding rice transplanter which is a work vehicle according to the invention.

  The riding rice transplanter 1 includes a floor step 4 on a main frame 3 supported so as to be able to run on the field by front and rear wheels 2a and 2b, a seedling transplanting device 5 as a field work device at the rear of the main frame 3, and a plurality of (see FIG. In the example shown, fertilizer blocks 7 in which the fertilizer units of 3) are arranged in the front-rear direction are arranged on the left and right sides of the machine body so that the traveling interlocking operation is possible.

  The left and right fertilization blocks 7 and 7 are, as shown in FIGS. 2, 3, and 4, sequentially showing a main part plan view, a main part side view, and a main part rear view of the fertilization transmission system. 8, 8 are extended and supported, and left and right front frames 3a, 3a and left and right rear frames 3b, 3b are provided on the left and right of the main frame 3 to fix the front and rear of the left and right fertilization frames 8, 8, respectively.

  Further, a fertilization amount adjusting unit 13 is provided below the fertilization block 7 on one side (right side in the illustrated example), and the fertilization power branched from the rear wheel transmission case 11 on the same side by connecting the first transmission shaft 12 to the front side. And the second transmission shaft 14 extending below the left and right fertilization blocks 7, 7 by being connected to the rear side of the fertilization amount adjusting unit 13, thereby lowering the floor step 4 and the left and right fertilization blocks 7, 7. The transmission system of the left and right fertilization blocks 7 and 7 is configured.

  The fulcrum 12a at the side end of the first transmission shaft 12 and the fulcrum of the fertilizer application amount adjusting portion 13 are provided in one plate of the right fertilization frame 8, and both end fulcrums of the second transmission shaft 14 are provided on the left and right rear frames 3b, 3b. 14a and 14a are provided, and the right rear frame 3b and the fertilization frame 8 are fixed with bolts at a position between the fulcrum of the fertilizer application amount adjusting unit 13 and the right fulcrum 14a of the second transmission shaft 14.

  In this way, in addition to securing the work space, while securing the transmission system and ensuring safety, the fulcrum 12a of the first transmission shaft 12 and the fulcrum of the fertilizer application amount adjusting unit 13 are provided on the fertilizer frame 8, and the second transmission shaft 14 By providing the fulcrum 14a on the rear frame 3b, variations due to machine differences can be minimized, and in the side fertilization structure that transmits power to the left and right, there is no need for an extra transmission shaft or length adjustment mechanism. The right and left operation accuracy can be ensured at a low cost.

  Further, the first adjustment rod 11a connected to the upper first transmission shaft 12 from the rear wheel transmission case 11 and the one-way clutch portions 7a of the left and right fertilization blocks 7 and 7 from both ends of the second transmission shaft 14 respectively. The left and right second adjusting rods 14b and 14b connected to the outer side 7a are configured to be adjustable in length.

  The fertilizer application amount adjusting unit 13 is connected to the first transmission shaft 12 and the second transmission shaft 14 via the input link 13a and the output link 13b, respectively, and is configured so that the input / output ratio can be adjusted by the swing fulcrum moving handle 13c. Thus, the traveling power is branched from the rear wheel transmission case 11 and transmitted through the first transmission shaft 12 and the fertilizer application amount adjustment unit 13 from the second transmission shaft 14 to the left and right fertilization blocks 7 and 7 in an adjustable manner. Can do.

  The transmission system having the above configuration adjusts the entire feed amount with the first adjustment rod 11a, and suppresses the left-right difference in the feed amount with the left and right second adjustment rods 14b, 14b, thereby allowing the left and right fertilizer blocks 7, 7 to move. The feeding amount can be adjusted efficiently.

(Medical fertilizer delivery part)
As shown in FIG. 5, a plan view of the main part around the left and right fertilization blocks 7, the medicinal fertilizer delivery section is connected to the fertilization hose 21... An air chamber 22a that is connected to the outside of the unit body and supplies air to each unit is provided in a substantially U-shape through the left and right sides along the rear edge of the floor step 4 from the inside of the body, and its left and right bent portions 22b. , 22b are formed in a T shape.

  Further, remaining amount discharge ducts 23 and 23 are provided on the outer side portions of the left and right fertilization blocks 7 and 7, respectively, and the rear ends thereof are supported by the left and right bent portions 22b and 22b of the air chamber 22a. As shown in FIG. 6, the left side view of the main part of each is configured so that the front ends thereof are front-lowering as discharge ports 23 a and 23 a that can be opened and closed by caps.

  Thus, by providing the respective left and right remaining amount discharge ducts 23, 23 with the respective discharge ports 23a, 23a, a duct for concentrated discharge, an air direction switching member, and the like are not required, so that the configuration is simple and low-cost. During fertilization work, the air volume can be secured with a single blower if both outlets 23a and 23a are closed with caps. When the remaining amount is discharged, the left and right remaining discharge ducts 23 and 23 are discharged by the inclination. Speed can be secured and water and fertilizer are discharged without accumulating inside, so cleaning becomes easy.

(Floor step)
The floor step 4 has a slope between the front step 4a and the rear step 4b as shown in FIG. 7 in a side view (a) and an enlarged perspective view (b) of the main part of the work vehicle. By providing a plurality of stepped protrusions 4d on 4c and 4c, the operator can move without sliding his / her foot. In addition, by removing the step by using a gentle slope, the worker can easily walk and the work space can be felt wide.

  Further, as shown in FIG. 8 which is a perspective view (a) and a cross-sectional view (b) of the sub-step portion, parts 4f and 4f of the front step 4a, that is, the upper portions of the sub-steps 4a and 4a are see-through shaped like a saw. And easy confirmation of the positions of the left and right sub-steps 4e, 4e provided at low positions that are blind spots on both sides of the front step 4a, so that the operator can feel safe and secure when getting off and on, especially when getting off To improve convenience.

(Technical significance)
The technical significance of the construction of the work vehicle is summarized as follows.

  The work vehicle having the above configuration includes a floor step 4 on the main frame 3 that is supported so as to be able to travel on the field, and is provided with a fertilizer that can be operated in conjunction with a transmission shaft. The left and right fertilization frames 8, 8 that support the left and right fertilization blocks 7, 7 project from the main frame 3 to the left and right, and the left and right fertilization frames 8, 8. Left and right front frames 3a and 3a for fixing the front sides of the main frame 3 are provided.

In this way, the fertilizer blocks 7 and 7 can be arranged on the left and right of the main frame 3 by the fertilizer frames 8 and 8 on the left and right sides of the machine body, and the left and right fertilizer frames are attached to the main frame 3 by the left and right front frames 3a and 3a. Durability can be improved by fixing 8 and 8 respectively.
Further, by providing the fertilizer blocks 7 and 7 on both the left and right sides of the traveling vehicle body, the work space is widened and the workability is improved, and the balance of the traveling vehicle body is also improved.

  Next, the transmission shaft includes a first transmission shaft 12 that transmits fertilization power to one of the left and right fertilization blocks 7 and 7 via a fertilization amount adjustment unit 13 that adjusts the fertilization operation amount, and the left and right fertilization blocks 7, The first transmission shaft 12 and the second transmission shaft 14 are arranged below the floor step 4 and the left and right fertilization blocks 7 and 7.

  In this way, fertilization power is transmitted from the first transmission shaft 12 to one fertilization block 7 so that the fertilization amount can be adjusted by the fertilization amount adjustment unit 13, and transmitted to the other fertilization block 7 via the second transmission shaft 14. In addition, the first transmission shaft 12, the fertilization amount adjusting unit 13, and the second transmission shaft 14, which are transmission components, are arranged below the floor step 4 and the left and right fertilization blocks 7 and 7, so that the floor step 4 And the fertilization blocks 7 and 7 play the role of the guard of a transmission system, and safety improves. Moreover, the work space on the floor step 4 is not disturbed.

  In addition, the work vehicle includes a transmission case 11 that branches the traveling power from the traveling support portion of the main frame 3, a first adjustment rod 11 a that connects the transmission case 11 and the first transmission shaft 12, and a second transmission. Left and right second adjustment rods 14b and 14b for connecting the shaft 14 and the left and right fertilization blocks 7 and 7 are provided, and the adjustment rods 11a and 14b are configured to be adjustable in length.

  Thus, the adjustment rods that can be adjusted in length at three locations can adjust the feeding amounts of the left and right fertilization blocks 7 and 7 with a minimum configuration, so that maintenance can be performed efficiently.

  Further, the work vehicle is provided with rear frames 3b, 3b for fixing the rear portions of the left and right fertilization frames 8, 8, respectively, on the left and right of the main frame 3 and provided with fulcrums 14a, 14a of the second transmission shaft 14, respectively. About the fulcrum of the adjustment part 13, the fertilization frame 8 and the rear frame 3b are connected in the intermediate position with the fulcrum 14a of the 2nd transmission shaft 14 of the same side.

  In this way, with respect to the fulcrum of the fertilizer application amount adjustment unit 13, by connecting the fertilizer frames 8, 8 and the rear frame 3b at an intermediate position with the fulcrum 14a of the second transmission shaft 14 on the same side, variations due to machine differences can be avoided. The cost can be reduced because there is no need to provide an extra transmission shaft or length adjusting mechanism.

  The work vehicle also includes left and right blow ducts 22 and 22 for supplying conveyance air from left and right positions to the left and right fertilization blocks 7 and 7 and left and right remaining amount discharge ducts 23 for discharging residual fertilizer to a position outside the fuselage. , 23, and left and right remaining discharge ducts 23, 23 are provided with discharge ports 23a, 23a, which can be opened and closed, respectively.

As described above, since the air ducts 22 and 22 are inside the machine body and the remaining amount discharge ducts 23 and 23 are outside the machine body, the left and right discharge ports 23a and 23a can be opened so that the fertilizer can be discharged from the outside of the machine body. Good work efficiency.
Further, by separating the discharge of the fertilizer on the left and right, it is not necessary to switch the duct and the air direction for collecting the remaining fertilizer into one when discharging the fertilizer. In addition, air direction switching parts and the like are not required and can be configured at low cost.

  In addition, the work vehicle is provided with an air chamber 22a communicating with the left and right air ducts 22 and 22 along the rear edge of the floor step 4, and left and right remaining amount discharge from the left and right bent portions 22b and 22b of the air chamber 22a. The ducts 23 and 23 are supported in the front-down direction, and the front ends are defined as discharge ports 23a and 23a.

  In this way, by supporting the remaining discharge ducts 23, 23 on the left and right outer sides forward to the discharge ports 23a, 23a, the residual fertilizer can be easily dropped by its own weight, the discharge speed is improved, and even less air can be discharged. . In addition, maintenance is improved because water and fertilizer are not stored, preventing rainwater from entering.

1 Working vehicle (riding seedling transplanter)
3 Main frame 3a Front frame 3b Rear frame 4 Floor step 7 Fertilizer block (fertilizer)
DESCRIPTION OF SYMBOLS 8 Fertilization frame 11 Transmission case 11a 1st adjustment rod 12 1st transmission shaft 13 Fertilization amount adjustment part 14 2nd transmission shaft 14a fulcrum 14b 2nd adjustment rod 22 Air duct 22a Air chamber 22b Bending part 23 Residual amount discharge duct 23a Discharge port

Claims (6)

In a work vehicle provided with a floor step (4) on a main frame (3) supported so as to be able to run on a farm, and a fertilizer device capable of running interlocking operation by a transmission shaft,
The fertilizer is composed of two fertilizer blocks (7, 7) arranged on the left and right of the floor step (4), and the left and right fertilizer frames (8, 8) that support the left and right fertilizer blocks (7, 7). ) Projecting left and right from the main frame (3), and left and right front frames (3a, 3a) for fixing the front sides of the left and right fertilization frames (8, 8) are provided on the main frame (3). A working vehicle characterized by that.   The transmission shaft includes a first transmission shaft (12) that transmits fertilization power to one of the left and right fertilization blocks (7, 7) via a fertilization amount adjustment unit (13) that adjusts a fertilization operation amount; And a second transmission shaft (14) for transmitting the fertilization power between the fertilization blocks (7, 7). The first transmission shaft (12) and the second transmission shaft (14) are connected to the floor step (4). And the left and right fertilizer application blocks (7, 7).   A transmission case (11) for branching traveling power from the traveling support portion of the main frame (3) is provided, and a first adjustment rod (11a) for connecting the transmission case (11) and the first transmission shaft (12). And left and right second adjustment rods (14b, 14b) for connecting the second transmission shaft (14) and the left and right fertilization blocks (7, 7), respectively, and these adjustment rods (11a, 14b) The work vehicle according to claim 2, wherein the work vehicle is configured to be adjustable in length.   Rear frames (3b, 3b) for fixing the rear portions of the left and right fertilization frames (8, 8) are provided on the left and right sides of the main frame (3), respectively, and fulcrums (14a, 14a) of the second transmission shaft (14), respectively. ), And the fertilizer application amount adjusting portion (13), the fertilizer frame (8) and the rear frame (3b) at an intermediate position with the fulcrum (14a) of the second transmission shaft (14) on the same side. The work vehicle according to claim 2, wherein the work vehicle is connected.   Left and right ventilation ducts (22, 22) for supplying conveyance air to the left and right fertilization blocks (7, 7) from the machine body inner position, and left and right remaining amount discharge ducts (23, 23) for discharging residual fertilizer to the machine body outer position 23), and the left and right remaining discharge ducts (23, 23) are respectively provided with openable and closable discharge ports (23a, 23a). . An air chamber (22a) communicating the left and right air ducts (22, 22) is provided along the rear edge of the floor step (4), and the left and right bent portions (22b, 22b) of the air chamber (22a) are provided. The work vehicle according to claim 5, wherein the left and right remaining amount discharge ducts (23, 23) are respectively supported in a forward-downward direction, and a front end is used as the discharge port (23 a, 23 a).