JP5005576B2 - Planting machine - Google Patents

Description

  The present invention relates to a planting work machine used by being connected to a traveling machine such as a riding rice transplanter.

2. Description of the Related Art Planting work machines that are used in connection with traveling machine bodies such as passenger rice transplanters are known. For example, the planting work machine shown in Patent Document 1 is arranged in parallel with a work machine frame arranged in the left-right direction with a predetermined interval in the left-right direction, and the front end is connected to the work machine frame. A plurality of planting transmission cases, a planting mechanism that is provided at the rear of each planting transmission case, separates the seedlings on the seedling stand and plants them in the field, and is provided on the work machine frame, An input case for inputting power from the power supply and a power distribution shaft that is arranged in parallel to the work machine frame and distributes the power output from the input case to each planting transmission case.
Japanese Patent No. 2695571

  However, conventionally, as in the planting work machine shown in Patent Document 1, the input case is provided with an input unit that supports the input shaft and an output unit that supports the output shaft, and the output unit When the input part is biased to one side, the input part and the output part are not only configured as separate cases, but a power transmission joint must be interposed between the two cases, resulting in an increase in the number of parts. This increases the cost of the input case and increases the overall weight of the input case.

The present invention was created for the purpose of solving these problems in view of the above circumstances, and is a planting work machine that is used by being connected to a traveling machine body. Provided at the rear of each planting transmission case, a plurality of planting transmission cases that are arranged in parallel with a predetermined interval in the left-right direction, with the front end connected to the working machine frame The planting mechanism for separating the seedlings on the seedling stand and planting them in the field, the input case that is provided on the work machine frame and inputs power from the traveling machine body side, and is arranged in parallel to the work machine frame is, the power distribution shaft for distributing the power outputted from the input case each planting transmission case, and a lateral feed gear case rotating the horizontal feed shaft by the power extracted from the power distribution shaft, said input case , Divided into 3 vertically In constituting at split case, input case, extends in the forward direction, an input unit for supporting the input shaft, extends downward in a state of being biased in the left-right direction one side with respect to the input unit, an output shaft Side-view reverse L-shaped provided with an output part to be pivotally supported , the first case of side-view reverse L-shape forming the inner half of the input part and the output part, and the outer half of the input part And a third case that is arranged on the opposite side in the left-right direction and that forms the outer half of the output part. It is. For example, from a first case that integrally forms the inner half of the input part and the output part, a second case that forms the outer half of the input part, and a third case that forms the outer half of the output part The input case is configured by the three divided cases. In this way, compared to the case where the input unit and the output unit are configured as separate cases, not only can the number of parts of the input case be reduced to reduce costs, but also the input case can be reduced in weight.

  Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a traveling machine body of a riding rice transplanter, and a planting work machine 3 is connected to a rear portion of the traveling machine body 1 via an elevating link mechanism 2 so as to be movable up and down. A planting PTO shaft (not shown) projects from the rear part of the traveling machine body 1, and the power output from the planted plant is planted via a bendable transmission shaft (not shown) provided with a universal joint. It is transmitted to the auxiliary work machine 3.

  As shown in FIGS. 1 to 7, the planting work machine 3 includes a work machine frame 4, a seedling stage 5, a planting transmission case 6, a planting mechanism 7, an input case 8, a power distribution shaft 9, a lateral feed speed change. A case 10 and a transverse feed shaft 11 are provided. The work machine frame 4 is a square cylindrical frame member that is disposed on the planting work machine 3 so as to face in the left-right direction. The work machine frame 4 is connected to the lifting link mechanism 2 via a rolling shaft 12 that protrudes forward from the left-right center position. It is connected to the rear end portion in a freely rolling manner. The seedling placing stand 5 has a seedling placing surface inclined in a low shape before and after the front height, and is laterally fed in the left-right direction according to the rotation of the lateral feed shaft 11.

  The planting transmission case 6 is arranged in parallel with a predetermined interval in the left-right direction, and the front end portion is integrally connected to the work machine frame 4. The planting mechanism 7 is provided at the rear part of the planting transmission case 6 and separates the seedlings on the seedling mounting stand 5 to plant them in the field. The number and arrangement of the planting transmission case 6 and the planting mechanism 7 are determined according to the number of planting strips of the planting work machine 3. For example, in the 6-planting planting machine 3 shown in FIG. 2, three planting transmission cases 6 are arranged in parallel at equal intervals, and the planting mechanisms 7 are arranged on the left and right sides of each planting transmission case 6. Is provided. Further, in the five-planting planting machine 3 shown in FIG. 3, the three planting transmission cases 6 are arranged in parallel at unequal intervals, and on the left and right sides of the planting transmission case 6 located at the left and right ends. While the planting mechanism 7 is provided, the planting mechanism 7 is provided only on one side of the intermediate planting transmission case 6. 2 and 3, illustration of the planting mechanism 7 is omitted.

The input case 8 is a case body for inputting power from the traveling machine body 1 side . As is clear from FIG. 6 , the input case 8 extends forward and supports the input shaft 13, and the lower part. And an output portion 8b that pivotally supports the output shaft 14 and is formed in an inverted L shape in side view , and is integrally attached to the intermediate portion of the work machine frame 4. The power distribution shaft 9 is arranged in parallel below the work machine frame 4 and distributes the power output from the input case 8 to each planting transmission case 6. The power distribution shaft 9 of this embodiment is a joint shaft 9b that connects the input shaft 9a of the planting transmission case 6 and the input shafts 9a and 9a (or between the input shaft 9a and the output shaft 14 of the input case 8). However, it may be a long shaft in which these are integrated.

  The lateral feed transmission case 10 rotates the lateral feed shaft 11 with the power extracted from the power distribution shaft 9. A shift mechanism for shifting the rotational speed of the lateral feed shaft 11 is incorporated in the lateral feed speed change case 10, and the lateral feed speed of the seed bed 5 is changed by shifting the speed change mechanism. It becomes possible to do. The transverse feed shaft 11 includes a screw shaft having an endless spiral groove on the outer peripheral portion, and a transverse feed body (not shown) that reciprocates left and right on the shaft according to the rotation of the screw shaft. By connecting the lateral feed body to the seedling stage 5, the lateral feed of the seedling stage 5 is performed.

  Next, a characteristic configuration of the planting work machine 3 according to the present embodiment will be described.

  As shown in FIGS. 2 and 3, the input case 8 is arranged between the planting transmission case 6 at the left outer end and the planting transmission case 6 at the right outer end. The input case 8 and the lateral feed transmission case 10 are arranged on the opposite side of the right and left center line of the planting work machine 3. Yes. For example, in the planting work machine 3 of the present embodiment, the lateral feed speed change case 10 is arranged on the left side of the left and right center line (rolling shaft 12) of the planting work machine 3, and from the left and right center line of the planting work machine 3 Also, an input case 8 is arranged on the right side. When the planting work machine 3 is configured in this way, the left and right sides of the planting work machine 3 are compared with the case where the input case 8 and the lateral feed speed change case 10 are arranged on the same side with respect to the left and right center line of the planting work machine 3. Since the weight balance is improved, rolling of the planting work machine 3 can be suppressed and planting accuracy can be improved.

  Further, as shown in FIG. 4, the input case 8 bypasses the upper rear of the work machine frame 4 to transmit power to the power distribution shaft 9, and the lateral feed transmission case 10 is coupled to the power distribution shaft 9. An extending portion 10a extending upward from the upper end of the transverse feed shaft 11 is supported by the extending portion 10a. More specifically, the input case 8 is formed in an inverted L shape in side view so as to follow the upper surface and the rear surface of the work machine frame 4, and the power input from the input shaft 13 is transmitted to the upper and rear sides of the work machine frame 4. The detour is configured to be transmitted to the power distribution shaft 9 arranged in parallel to the rear lower side of the work machine frame 4, and the lateral feed transmission case 10 extends upward from the coupling position with the power distribution shaft 9. The lateral feed shaft 11 is pivotally supported by the upper end portion of the protruding portion 10a, and power is transmitted to the lateral feed shaft 11 via the intermediate shaft 15. If the planting work machine 3 is configured in this way, the input shaft 13 of the input case 8 can be disposed above the work machine frame 4, so that the planting PTO shaft on the machine body side and the input shaft 13 of the input case 8 are connected. The bending angle of the transmission shaft can be reduced, and smooth power can be transmitted to the planting work machine 3. Further, since the lateral feed shaft 11 can be arranged at a position lower than the upper surface of the input case 8 by using the rear space of the work machine frame 4, the center of gravity of the planting work machine 3 is lowered, and the planting work machine 3 is rolled. Can be suppressed.

  As shown in FIGS. 5 to 7, the input case 8 has an input portion 8 a that pivotally supports the input shaft 13 in order to transmit power to the power distribution shaft 9 by bypassing the upper rear side of the work machine frame 4. The output portion 8b supporting the output shaft 14 is biased toward the rolling shaft 12 so that the output shaft 14 can be connected to the power distribution shaft 9 below the input portion 8a. The input shaft 13 and the rolling shaft 12 are superposed in a side view. If the planting work machine 3 is configured in this manner, the input shaft 8 approaches the rolling shaft 12 side by biasing the input case 8, so that the rotational reaction force of the input shaft 13 affects the rolling of the planting work machine 3. The influence can be reduced. Further, by connecting the output shaft 14 to the power distribution shaft 9 below the input portion 8a, the input case 8 and the planting transmission case 6 can be arranged close to each other. Also in the planting work machine 3 (for example, 6 rows planting) arrange | positioned, the position of the input case 8 can be brought close to the left-right center as much as possible. Furthermore, since the input shaft 13 and the rolling shaft 12 of the input case 8 are overlapped in a side view, the position of the rolling shaft 12 is set low, and the left and right of the entire planting work machine (especially the planting claw position) during rolling. Can reduce plant runout and improve planting accuracy.

As shown in FIGS. 5 to 7, the input case 8 is a three-divided case that is divided into three vertically when the input unit 8a is biased to one side with respect to the output unit 8b. It is configured. For example, a second casing 8d for forming the first case 8c in a side view inverted L-shape to integrally form the inner half portion of the input portion 8a and an output portion 8b, the outer half portion of the input portion 8a, said second The input case 8 is constituted by a three-divided case including a third case 8e which is arranged on the opposite side to the case 8d and which forms the outer half of the output portion 8b. When the planting work machine 3 is configured in this way, not only can the input unit 8a and the output unit 8b be configured as separate cases, but the number of parts of the input case 8 can be reduced and the cost can be reduced. Can be reduced in weight.

  The input case 8 configured as described above is fixed to the work machine frame 4 (or the mounting seat 16 provided on the work machine frame 4) at at least two places. One fixing portion 8 f is formed in the input portion 8 a and is bolted to the upper surface side of the work machine frame 4. In this way, the force that the input shaft 13 receives from the transmission shaft toward the rear and rear can be received as the force in the direction in which the work implement frame 4 is pressed. The fixing strength of the input unit 8a can be improved as compared with the case of receiving. The other fixing portion 8g is formed at the output portion 8b and is bolted to the back side of the work machine frame 4. In this way, the rotational reaction force of the output shaft 14 can be received as a force in the direction in which the work implement frame 4 is pressed. The fixing strength of the part 8b can be improved.

  According to the present embodiment configured as described, the planting work machine 3 is used by being connected to the traveling machine body 1, the work machine frame 4 arranged facing the left-right direction, and the predetermined left-right direction. A plurality of planting transmission cases 6 that are arranged in parallel at intervals and whose front ends are connected to the work machine frame 4 and seedlings on the seedling stand 5 are provided at the rear of each planting transmission case 6. The planting mechanism 7 for separating and planting in the field, the work machine frame 4, the input case 8 for inputting power from the traveling machine body 1 side, and the work machine frame 4 are arranged in parallel with the input. A power distribution shaft 9 that distributes the power output from the case 8 to each planting transmission case 6 is provided, and the input case 8 supports the input portion 8a that supports the input shaft 13 and the output shaft 14. The output unit 8b is provided, and the input unit 8a is connected to the output unit 8b. When the input case 8 is biased, the input case 8 is configured by a three-divided case that is divided into three vertically, so that the number of parts of the input case 8 can be reduced compared to the case where the input unit 8a and the output unit 8b are configured as separate cases. Not only can the cost be reduced and the input case 8 can be reduced in weight.

It is a side view of a riding rice transplanter. It is a principal part top view of a planting work machine (6 row planting). It is a principal part top view of a planting work machine (5-row planting). It is a principal part side view of a planting work machine. It is a top view of an input case. It is a side view of an input case. It is a rear view of an input case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Planting work machine 4 Work machine frame 5 Seedling stand 6 Planting transmission case 7 Planting mechanism 8 Input case 8a Input part 8b Output part 9 Power distribution shaft 10 Lateral feed speed change case 11 Lateral feed shaft 12 Rolling shaft 13 Input shaft 14 Output shaft

Claims (1)

It is a planting work machine used in connection with a traveling machine body,
A work machine frame arranged facing left and right,
A plurality of planting transmission cases that are arranged in parallel with a predetermined interval in the left-right direction and whose front end is connected to the work machine frame;
A planting mechanism that is provided at the rear of each planting transmission case, and separates the seedlings on the seedling stand and transplants them on the field;
An input case that is provided on the work machine frame and inputs power from the traveling machine body side;
A power distribution shaft that is arranged in parallel to the work machine frame and distributes the power output from the input case to each planting transmission case ;
A transverse feed transmission case that rotates the transverse feed shaft with the power extracted from the power distribution shaft ;
In configuring the input case with a three-divided case divided vertically,
Input case, before extending in a direction, and an input unit for supporting the input shaft, extends downward in a state of being biased in the left-right direction one side with respect to the input unit, and an output section for supporting the output shaft It is provided with a reverse L-shape in side view,
A first case having a reverse L-shape in side view forming the inner half of the input part and the output part, a second case forming the outer half of the input part, and the second case are arranged on the opposite side in the left-right direction. And a third case that forms the outer half of the output portion .

Images