JPS63167710A - Seedling supply stand of rice planter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a rice transplanting device for planting multiple rows.

[Prior Art] A seedling supply table that carries a seedbed and moves back and forth in the left and right direction includes a seedling transfer belt that transfers the seedbed stored on the seedling supply table to a predetermined seedling supply port side, and the seedling transfer belt. A rice transplanting device is used that is equipped with a plurality of combinations of stoppers that stop the rotational movement of the rice, and is capable of planting multiple rows at the same time and stopping planting of any row as necessary.

In this type of rice transplanting device, the means for stopping any seedling transfer belt on the seedling supply table is to narrow the gap between the pair of rollers on which the belt is stretched, thereby loosening the belt, and thereby causing the driving roller to stop. A method was used to create slip between the belt and the belt.

[Problems to be Solved] In the conventional rice transplanting device described above, when the seedling transfer belt is stopped, the belt loosens and hangs down, causing the seedlings placed on the belt to fall down, resulting in positional deviation and failure to restart the drive. There was a problem that sometimes it would not be possible to send it.

To solve this problem, there is a system that keeps the seedling transfer belt under constant tension and uses a stopper to stop the rotation of the roller that supports the belt. Since the rod-shaped stopper is brought into abutment engagement in the diametrical direction to forcibly stop the rotating roller, when the stopper is operated, the stopper tilts off in the direction of rotation of the roller and the belt is successfully stopped. There was a problem without it.

[Means for Solving the Problems] In order to solve the above problems, the present invention employs the following configuration.

That is, the seedling supply table of the rice transplanting device according to the present invention is stretched between a pair of support rollers attached to a part of the seedling supply table that carries the seedbed and moves back and forth in the left and right direction. To the seedling supply stand! A plurality of seedling transfer belts are installed in parallel to transfer the placed seedling beds to a predetermined seedling supply port side, and rotational movement of some of these plurality of seedling transfer belts is stopped! This makes it possible to stop planting in any row as needed [1]
7. A seedling feeding table of a planting device, the means for stopping some of the seedling transfer belts includes a stopper that engages with an uneven portion provided on the seedling transfer belt support roller, and a stopper that engages with an uneven portion of the roller. The stopper is characterized by a guide that prevents the stopper from deviating in the direction of rotation of the support roller when engaged with the support roller.

[Function] When the seedling transfer belt is stopped E, the stopper is moved toward the support roller and engaged with the uneven portion of the roller, thereby forcibly stopping the support roller.

At this time, the stopper is pushed in the direction of rotation of the roller and tends to fall, but a guide is provided to prevent the stopper from deviating in this direction, so the rotation of the roller is reliably stopped and the feeding of the seedlings is also stopped. do.

[Example] The following figures show examples of the rice transplanting device according to the present invention, and this rice transplanting device 1 is used by being attached to a self-propelled tractor 2.

The tow vehicle 2 includes a transmission case 5, a connection frame 6 located at the rear of the transmission case 6, which is generally U-shaped when viewed from the side, and a pipe-shaped main frame 7 provided in the front-rear direction. front axle case 9
．． A front differential case 10 integral with the main frame 7 is rotatably provided with respect to the main frame 7, and a rear axle case 11 is attached to the rear end of the main frame 7. At the end of the front axle case 9.9, a front wheel supporting rotating case 14.14 with a front wheel 13.13 attached to the lower end is provided so as to be able to change direction. , rear wheel 17 at the lower end
．． Gear cases 1B and 1[3 in which 17 is pivotally supported are provided. The engine 20 is installed on an engine frame 21 that is provided at a slightly offset position in the middle of the main frame 7.

The towing itt 2 is constructed by covering the traveling section and power system section configured as described above with a podium 30. A box part 30a covering the upper part of the engine 20 is provided with a pilot's seat 32 and various operating levers on the sides of the pilot's seat 32. In addition, a control platform section 30b protruding from the front part of the vehicle body
is provided with a handle 33, a change lever 34, etc.

Furthermore, a parallel link device 40 for towing the rice transplanter M is provided at the rear end of the towing vehicle 2. This parallel link device 4
0 includes a frame body 42 fixed to the rear axle case 11 and having a gate shape in rear view, one upper link 43 and two lower links 44, 44.0 supported by the frame body. It consists of a connecting frame 45 that is attached to the rear end of the upper and lower links and has a connecting tool 45a for the agricultural machine at the lower end. Upper link 4
At 3, a hydraulic cylinder 47 whose base is pivotally connected to the rear axle case 11 is connected to the upper link 43. By expanding and contracting this hydraulic cylinder 47, the parallel link device 4o can be rotated up and down.

The rice transplanting device 1 includes a seedling feeding table 51 that is tilted to the front or upper side above the transmission case 5o, and a planting claw 52a at the tip, which moves up and down while drawing a predetermined trajectory. It is equipped with a plurality of planting rods 52 that take out seedlings one by one from a seedbed placed on a seedling supply table 51 and plant them in the field. These planting rods 52 are provided for the number of planting rows (5 rows in the unimplemented example). The seedling supply table 51 is assembled to a frame 56 supported on a rail 55 so as to be slidable in the left and right direction. A receiving frame 57 is provided adjacent to the lower end of the frame body 56, and this receiving frame 57
Seedling supply ports 58. ...is provided. A center float 60 and a pair of left and right side floats 81 and 131 are pivotally mounted on the lower side of the transmission case 50 so as to be vertically rotatable. And center flow 1
Nine ends of a detection rod 62 connected to a hydraulic valve for detecting the amount of vertical movement of the float are attached to the front part of the float. The rice transplanter Wl is attached by rotatably connecting the front end of the transmission case 50 to the connector 45a, and is towed by the traveling of the towing vehicle 2, and is also can be conveyed.

The transmission case 50 is provided with a lead cam shaft 70 having a spiral groove cut on its outer periphery, and a claw of a lead metal 71 attached to the frame 56 of the seedling supply table is engaged with the groove of the lead cam shaft 70. It matches. When the lead cam shaft 70 rotates, the lead metal 7E moves while its pawl engages with the spiral groove, so that the seedling supply stand 51 moves laterally together with the frame 5B.

Furthermore, five pairs of belt support rollers 80 and 80' on the driving side and driven side are provided in parallel on the rear back side of the seedling supply table 51, and between the belt support rollers 80 and 80' in each row, respectively. Two wide seedling transfer bells) 81 are strung up. That is, in this device, two transfer belts 81 and 81 are provided for each work strip (for five strips, a total of 1
A sensor 82 for detecting the presence of seedlings is provided between the pair of seedling transfer bells 81 and 81. The outer surface of the driving side support roller (driving roller) 80' is formed smoothly, and the driven side support roller (driven roller)
The outer peripheral surface of 80 is formed as a rough surface with high friction. Further, the back side of the seedling transfer belt 81 is also formed as a rough surface with high friction. When the seedling supply table 51 reaches the end of the left and right movement stroke due to the rotation of the lead cam shaft 70, the drive roller 80' rotates by a certain amount to move the belt, and the seedling supply table 51 is placed on the seedling supply table 5!1. The seedbed in which the seedling is placed is transferred one row in the direction of the seedling supply port 58. At this time, the driven roller 80 rotates at the same time due to the frictional force between the driven roller 80 and the belt 81.

As shown in FIG. 7, the end of the driven roller 80 has an appropriate number of convex portions 83. . . . is formed, and this portion serves as the engagement uneven portion H. Then, the convex portion 83. A rod-shaped stopper 85 is provided with a claw 84 that engages with....

The stopper 85 is slidably inserted into the cylindrical member 8B, and is pushed downward (
The stopper 85 is biased in the direction in which the stopper 85 engages with the protrusion 83.

The cylindrical member 8B that fits and holds the stopper 85 is the holding member 8.
8, and a rod-shaped guide 89 is fixed to the outer periphery of the distal end of the cylindrical member 88. The guide 89 is slightly bent in the direction away from the stopper 85, and its tip is in WI contact with the outer peripheral surface of the uneven portion H of the driven roller 80.

The protruding end of the shaft 80a of the driven roller 80 is slidably fitted into the guide grooves 91, 91 of the bearing side plates 90, 90, and is movable in the tensioning direction of the seedling transfer belt 81. There is. A lower end portion of an inner 93a of an operating wire 93, which is a means for operating the driven roller 80 up and down, is attached to the stopper 85. Also, outer 93
The lower end portion of b is in contact with a receiver 88a having a U-shaped cross section and fixed to the upper end portion of the holding member 88. The upper end of the inner 93a is connected to a clutch lever 85 provided at the upper part of the frame 56.
The upper end of the outer 93b is attached to the machine frame. A clutch wire 84 for operating the planting clutch is also connected to the intermediate portion of the clutch lever θ5. The base of the clutch lever 95 is pivotally connected to the machine frame by a pin 97, so this clutch lever 95
By tilting in the direction of arrow X, the inner 93a of the operating wire 83 is pulled. moreover.

A tension spring 99 is tensioned between the shaft 80a of the driven roller 80 and the mounting member 8B.
9 urges the roller 80 in the direction away from the drive roller 80', that is, in the direction in which the belt 81 is tensioned.

This rice transplanting device 11 is used while being towed around the field by a tractor 2. In use, the planting rods 52 for the number of planting rows perform predetermined movements in conjunction with the left and right reciprocating movement of the seedling supply table 51 to take out seedlings one by one from each seedling supply port 58 and plant them in the field. At this time, since the clutch lever 85 is set to the working position i1A, the inner 93 of the wire 93
a is in a tensioned state and the stopper 85 is in a raised state where it does not engage with the convex portion 83 of the driven roller 80, so the driven roller 80 can freely rotate. Furthermore, since the belt 81 is under tension, it is moved by the rotational power of the drive roller 80'. Therefore, the seedling supply stand 51
When the drive roller 80' reaches the end of the left and right movement stroke and rotates, the driven roller 80 also rotates accordingly, and the transfer belt 81 rotates in the direction of arrow Y.

In the case of Tadori work, all (5 sets) of planting rods are 52°...
is activated to plant all rows (5 rows in this example), but in some cases, such as when planting at the edge of a field, it is necessary to stop planting any row. In such a case, use the row clutch lever 8 to stop planting.
5 in the opposite direction of the arrow X and set it at the stop position B. Then, the clutch wire 94 in that row is in the "off" state, the inner 93a of the operating wire 93 is pushed out, and the outer 93b is pulled, so the stopper 85 is moved downward in the diametrical direction of the driven roller 80a by the return spring 87. Then, the protrusion 83 of the driven roller 80 and the claw 84 of the stopper 85 engage with each other. As a result, the rotation of the driven roller 80 is restricted, and the transfer bell 81 no longer rotates due to frictional force, stopping the transfer of the seedbed. At the same time,
By moving the clutch wire 94 in the "off" direction, the operation of the planting rod 52 is also stopped. To resume planting, simply return the clutch lever 95 to the working position IA.
Then, the inner 93a is retracted against the elasticity of the return spring 87, and the engagement between the stopper 85 and the convex portion 83 is released.

In this device, when the stopper 85 moves in the diametrical direction of the driven roller 80, the stopper 85 slides in contact with the outer periphery of the driven roller (more precisely, the outer periphery of the uneven portion H), and the stopper 85 is moved in the rotational direction of the roller. Since a guide 89 is provided to prevent deviation, the engagement and disengagement of the stopper 85 is reliably performed.

In this way, in this planting device M1, the stopper 85 is engaged with the belt support roller (driven roller) 80 by the elastic force of the return spring 87, so seedling feeding is automatically stopped by operating the lever. do. Furthermore, since the stopper/pa 85 and the belt support roller 80 are forcibly disengaged from each other using the operating wire 93, both can be reliably removed. Further, since the belt support roller 80 is constantly pulled upward by the tension spring 88, the seedling transfer belt 81 does not sag and accurate rotational movement is performed.

In addition, although this embodiment shows an example in which only one row of the odd number row (5 rows) planting device is stopped, all rows may be stopped as appropriate. The stopper 85 may not be provided on the outer periphery of the uneven portion H, but may be provided at another appropriate position to prevent the stopper 85 from moving in the direction of rotation of the roller.

[Effects of the Invention J] As is clear from the above explanation, the seedling feeding table of the rice transplanting device according to the present invention can reliably stop and release a specific seedling transfer belt, so that it is possible to avoid planting due to poor seedling feeding. The typo has been resolved.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the rice transplanting device according to the present invention in use, Fig. 2 is its plan view, Figs. 3 and 4 are side and rear views of the main parts of the rice transplanting device, and Fig. 5 FIG. 6 is a side view and rear view of the operating section, and FIG. 7 is an explanatory view showing the shape of the end of the belt support roll. l... Rice transplanting device 2... Traction vehicle 51... Seedling supply stand 52... Planting rod 58... Seedling supply port 80,
80 ”...Seedling transfer belt support roller 81...Seedling transfer belt 85...Stow/pa 89...Guide 9
3...Operation wire 95...Clutch lever H.
・・Uneven parts

Claims (1)

[Claims] (1) A part of the seedling supply table that carries a seedling bed and moves back and forth in the left and right direction is stretched between a pair of support rollers attached to the seedling supply table and placed on the seedling supply table. By arranging a plurality of seedling transfer belts in parallel to transfer the seedling bed to a predetermined seedling supply port side, and by stopping rotational movement of some of the seedling transfer belts among these plurality of seedling transfer belts, A seedling supply stand for a rice transplanting device that is capable of stopping planting in any row, and the means for stopping some of the seedling transfer belts is connected to an uneven portion provided on the seedling transfer belt support roller. 1. A seedling supply stand for a rice transplanting device, comprising a stopper that fits together with a stopper, and a guide that prevents the stopper from deviating in the rotational direction of the support roller when the stopper is engaged with the uneven portion of the roller.