JPH11137032A - Structure of seedling-placing platform in rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a seedling-placing platform in a rice transplanter capable of preventing the decrease in strength of the seedling placing platform when arranging a longitudinally feeding structure. SOLUTION: This structure of a seedling-placing platform is constituted by arranging a pair of longitudinally feeding structures 9 having seedling-feeding belts on a seedling-placing face 7a of the seedling placing platform in parallel at an interval, attaching a reinforcement member 11 in the right and left direction of the seedling-placing platform through a winding passage of the seedling- feeding belt at the back side of the seedling-placing platform, and connecting a laterally sending structure of the seedling-placing platform to the reinforcement member 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice seedling mounting structure of a rice transplanter provided with a remaining amount sensor for detecting that the number of seedlings on a seedling mounting is less than a predetermined amount. The present invention relates to an improvement in a replacement operation of a remaining amount sensor.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 3-80011, the remaining amount sensor is disposed between a pair of left and right vertical feed mechanisms and mounted on the back of a seedling mounting table. When an alarm activated by the operation of the remaining amount sensor sounds, the machine is stopped to supply seedlings.

[0003]

In order to improve the efficiency of planting work by reducing the number of seedling replenishments, it seems good that the remaining amount sensor is located as low as possible below the seedling mounting table. If there is, there is a risk of lack of stock due to operation errors and the like, and the trouble of feeding the supply seedlings while rotating the vertical feed mechanism by manual operation or the possibility of the connection state between the existing seedlings and the supply seedling being disordered tends to increase. Therefore, in actuality, in consideration of those points, the position is appropriately set at an upper and lower middle position between the left and right vertical feed mechanisms. By the way, in the case of pot seedlings, accurate and smooth vertical feed operation is required,
The remaining amount sensor is positioned above or above the vertical feed mechanism, and in the case of seedlings such as mat seedlings, the number of seedlings at the time of replenishment is increased so that the working efficiency is improved. Specifically, the position of the remaining amount sensor is changed and set according to the specification of the seedling to be planted. Conventionally, in the change setting work, an operation of once removing the remaining amount sensor from the seedling mounting table and then mounting the sensor at a different position is required for every strip, and furthermore, it is narrow and handy at the lower portion of the back of the seedling mounting table. Since such an operation is performed in a place where it is difficult to reach, it is very troublesome and troublesome to replace the sensor. The purpose of the present invention is
The present invention is intended to simplify the work of replacing a plurality of remaining amount sensors by devising the attachment of the remaining amount sensor.

[0004]

In order to achieve the above object, the present invention provides a rice transplanter having a remaining amount sensor for detecting that the number of seedlings on a seedling mounting table has reached a predetermined amount or less. In the seedling mounting structure of the seedling mounting base, a horizontal reinforcing member extending over all the strips of the seedling mounting base is attached to the rear surface of the seedling mounting base in a state where the mounting position with respect to the seedling mounting base can be changed vertically within a predetermined range and set. A plurality of remaining amount sensors are attached to the reinforcing member.

[0005]

Normally, in order to secure the strength and rigidity of the seedling mounting table in the lateral direction, an appropriate number of reinforcing members are provided over the entire length of the mounting table. Therefore, if the remaining amount sensors are attached to the reinforcing members arranged near the vertical feed mechanism, the positions of all the remaining amount sensors can be changed at once by simply changing the one reinforcing member. Since the reinforcing member fixes only the left and right ends to the seedling mounting table,
The replacement operation is performed in a place easily accessible, and the number of disengagement operation locations can be reduced. Then, since the position of the reinforcing member is changed up and down, there is a concern that adverse effects such as deterioration of the original reinforcing effect may occur. However, even if the vertical position of the reinforcing member changes, the strength itself of the reinforcing action in the left-right direction does not change,
Since only one of the several reinforcing members is moved up and down, there is practically no difference in the strength and rigidity of the seedling mounting table. Proved possible.

[0006]

As a result, due to the effective use of the reinforcing member,
It was possible to easily and easily replace the remaining amount sensor up and down according to the seedling variety without adversely affecting the strength and rigidity of the seedling mounting table.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows a planting section 2 which can be moved up and down by an elevating link mechanism 1 connected to a traveling machine body not shown, 3 is a float, 4 is a feed case, 5 is a planting frame, 6 is a planting case, 7 is a seedling mounting stand, 8 is a planting mechanism, 9 is a vertical feeding mechanism for seedlings, and 10 is a transmission shaft. The seedling mounting table 7 slidably engages a sash member 12 attached to a lower end of the back surface thereof with a guide rail 13 which is a member of the planting case 6 side, and is fixed to an upper and lower intermediate portion on the back surface of an upper rail 14. Is slidably engaged with an upper end portion of a support member 15 erected from the feed case 4, and is slidably supported with respect to the feed case 4. The sash member 12 and the upper rail 14 are members extending to the left and right of the seedling mounting table 7 and are also reinforcing members. And the seedling rest 7
A reinforcing member 11 having a T-shaped cross section is attached to the lower part of the vertical feeding mechanism 9 so as to extend over all the rows of the seedling mounting table 7, and a lateral feeding projecting from the reinforcing member 11 and the feed case 4 to the left and right. A left and right end portion of the shaft 17 is connected by a pair of connecting members 16, and a lateral feed mechanism that reciprocates and laterally moves the seedling mounting table 7 within a predetermined range by the lateral reciprocating movement of the lateral feed shaft 17. Make up. The vertical feed mechanism 9 is configured by winding a rubber belt 9c with a projection over a driving wheel body 9a and a driven wheel body 9b, and is disposed in a pair on each side. The vertical feed mechanism 9 is operated by an intermittent drive structure that drives the driving wheel 9a at each stroke end of the horizontal feed of the seedling placing table 7, and the drive mechanism and the specific structure of the above-described horizontal feed mechanism Is
Description is omitted because of the well-known structure.

As shown in FIGS. 1 to 3, a remaining amount sensor S for detecting that the number of seedlings on the seedling mounting table 7 has fallen below a predetermined amount.
Is located between the pair of rubber belts 9c and provided for each strip. The remaining amount sensor S is composed of an ON-OFF type limit switch 18 and a contact 19 pivotally connected to the swing switch piece 18a, and a plurality of limit switches 18 are attached to the reinforcing member 11. The upper surface portion of the contact 19 is arranged so as to protrude slightly upward from a long hole 7b formed in the sliding transfer surface 7a of the seedling mounting table 7. In other words, when the contact 19 that has retreated downward moves upward and returns as the number of seedlings decreases, the limit switch 18
Is turned on and the alarm device 20 of the control unit (not shown) is activated, so that the pilot is notified of the seedling supply time. In addition, the contact surface of the contact 19 is formed in a curved surface that is symmetrical in the vertical direction so that both the downward movement of the seedling accompanying the supply operation and the upward movement for removing the remaining seedling can be performed smoothly. Incidentally, a similar long hole 7c is formed at another position below the long hole 7b. This is for changing the arrangement position of the remaining amount sensor S in the case of the pot seedling and the mat seedling. That is, the mounting bolts 21 at the left and right ends
Is removed from the nut portion 22, the reinforcing member 11 is removed from the seedling mounting table 7, and then the mounting member 21 is screwed into the other nut portion 23 while the contact 19 is fitted in the other long hole 7c. Is replaced. At this time, the connecting member 16 also changes the relative mounting angle with the transverse feed shaft 17.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a mounting structure of a remaining amount sensor.

FIG. 2 is a partial plan view of a lower part of a seedling mounting table.

FIG. 3 is a sectional view of a main part showing an arrangement state of a remaining amount sensor.

FIG. 4 is a side view of the planting section.

[Explanation of symbols]

 7 Seedling stand 11 Reinforcing member S Remaining amount sensor

Claims (1)

[Claims] 1. A longitudinal feed mechanism (9) provided with a seedling feed belt (9c) on each of the seedling placing surfaces (7a) of a seedling placing stand (7) on which seedlings are placed, with a predetermined interval therebetween. And a reinforcing member (11) extending in the left-right direction of the seedling mounting table (7).
Is attached to the back side of the seedling mounting table (7) through the winding path of the seedling feeding belt (9c), and the transverse feed mechanism for driving the seedling mounting table (7) to reciprocate laterally to the right and left is reinforced by the reinforcement. The seedling mounting structure of the rice transplanter connected to the member (11).