JPH11196634A - Structure of gear case for transversely feeding seedling-carrying platform - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject structure capable of simply making a positional mark of a gear coincide with a prescribed position in spite of a simple structure by installing an opening capable of visually confirming the positional mark in a gear case. SOLUTION: This structure is obtained by providing an opening 20a capable of visually confirming a positional mark 21a in a gear case in a mechanism for transversely feeding a seedling-carrying platform designed to change the speed and regulate the extent of the traverse feed of the seedling-carrying platform by making a positional mark 21a of a speed change gear internally installed in the gear case with a prescribed position. In the structure, the opening 20a is preferably a lubrication port and a visually conforming window 20a is preferably provided on a lubricating cap 20 installed in the lubricating port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a laterally feeding gear case of a seedling mounting table.

[0002]

2. Description of the Related Art In a laterally moving structure of a seedling table in a rice transplanter, the amount of laterally moving the seedling table is adjusted according to the type of seedling. The lateral feed amount is changed by shifting the gears. At this time, the gears cannot be shifted unless all gear position marks (timing marks) match.

In the past, since the position of the position mark was not known at all from outside, it was necessary to search for the shift position by manually moving the planting pawl, which required time and labor. In some cases, a key is used to confirm the position mark.
Also needed to be disassembled.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem in the prior art, and has as its object to simply match the gear position mark with a simple structure. It is assumed that.

[0005]

The technical means adopted by the present invention to attain the above object is to adjust the position mark of a transmission gear provided in a gear case to a predetermined position, thereby providing a seedling mounting table. In the seedling table horizontal feed mechanism in which the amount of horizontal feed is adjusted, the gear case is provided with an opening through which the position mark can be visually recognized.

Preferably, the opening is a lubrication port, and a lubrication cap is provided in the lubrication port, and a visual window is provided. Further, the position mark is set in advance to a desired gear so that the gear can be shifted by meeting certain criteria. For example, a position mark on a case side provided in a gear case, The gear shift may be performed by matching the position mark with the case structure (for example, bolts), the positional relationship with the viewing window, the key of the gear, and the like. In one example, the position mark is provided on a transmission gear provided at an end of a rotary helical shaft constituting a lateral feed shaft, and the gear case is located at a position corresponding to the transmission gear. -Opening for visual recognition is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a side view of a riding rice transplanter, in which a planting section 2 is mounted on a rear portion of a traveling body 1 via a link mechanism 3 so as to be able to move up and down.
In the planting section 2, a planting rod 5 is attached to the rear part of the plant case 4, and a seedling mounting table 6 which is reciprocally traversed is provided above and below the planting case 4. Seedling table 6 by rotation
The seedlings placed on the ground are scraped off per unit planting and planted in a field.

In the drawing, reference numeral 7 denotes a gear case, which includes a transmission mechanism having a plurality of gear groups, and a rotary helical shaft 8 which forms a transverse feed shaft by the transmission mechanism. The rotation speed is changed. The rotary screw shaft 8 is provided with a transverse feed mechanism (not shown), and the seedling mounting table 6 is rotated by the transverse feed mechanism along the rotary screw shaft 8 to retreat.
It moves left and right along the length direction.

As shown in FIG. 2, the speed change mechanism includes a driven shaft 9 having a plurality of driven gears 9a, 9b, 9c, 9d and a speed change gear in which a plurality of transmission gears 10a, 10b, 10c, 10d are idlely mounted. The shaft 10 and a plurality of transmission gears 10a, 10b,
A shift shifter 11 for selectively fixing 10c and 10d is provided.

A transmission gear 13 is fixed to an end of the rotary helical shaft 8 rotatably supported by a bearing 12, and the transmission gear 13 is a driven gear 9 provided on a driven shaft 9.
a. The driven shaft 9 and the transmission shaft 10 are both rotatably supported by bearings 12, and the driven gears 9a, 9b, 9c, 9d of the driven shaft 9 and the plurality of transmission gears 10a, 10b, 10c, 10d of the transmission shaft 10 are provided. Can mesh with each other.

The shift shifter 11 is provided with a slide key -1 for sliding in a slide groove extending in the length direction of the shift shaft 10.
4, a shift operation shaft 15, and a connecting body 16 for connecting the slide key 14 and the speed change operation shaft 15. The slide key 14 is moved by holding the handle 17 and moving the speed change operation shaft 15 in the axial direction. Thus, a desired transmission gear is selected.

A plurality of detent grooves 15a, 15b, 15c and 15d are provided on the outer peripheral surface of the speed change operation shaft 15, and the speed change operation shaft 15 is moved in the axial direction by the speed change shifter 11 to select a desired speed change gear. The detent ball 18 is fitted into the detent groove corresponding to the transmission gear, and the detent ball 18 is fixed in the groove with a bolt 19 to restrict the axial movement of the speed change operation shaft 15.

The gear case 7 is a case in which a transmission mechanism is mounted.
The case body 7a includes a case body 7a and a case cover 7b for covering the side surface of the case body 7a. The case body 7b is detachably mounted on the case body 7a by bolts. An opening is formed at a position corresponding to the transmission gear 13 at the end of the rotary spiral shaft 8 of the casing 7b, and an oiling cap 20 is detachably provided in the opening. The opening is located above the plurality of gear groups, so that the gear groups can be well lubricated. The lubrication cap 20 has a window 20
a, and a position mark 21a is provided on the surface of the transmission gear 13, so that the position mark 21a can be visually recognized through the window 20a.

Although the window 20a is made of a translucent member, the lubrication cap 20 itself may be made of a transparent material. Even when the lubrication cap 20 itself is formed of a non-translucent member, by removing the lubrication cap 20, the position mark 21a can be viewed from the opening.

The case cover 7b is provided with a position mark 21b close to the opening so that the position mark 21a on the gear side matches the position mark 21b on the case side. Thus, the gear shift is performed. The gear provided with the position mark 21a is not limited to the transmission gear 13 at the end of the rotary helical shaft 8, but the point is that the gear can be changed by adjusting the position mark to a predetermined position. Any structure may be used as long as it is assembled in advance and an opening for viewing the position mark is provided at a position corresponding to the position mark.

The object to which the position mark 21a provided on the gear is aligned is not limited to the case side position mark 21b provided on the case 7, but the members constituting the case 7, For example, the bolt may be used also as a position mark, may be determined based on the positional relationship with respect to the window 20a, or may be adjusted to the key 22 of the gear. The configuration of the gear case 7 is not particularly limited, and the case body 7a and the case cover 7b
, Or may be integrally formed as a whole.

[0017]

According to the present invention, the position mark of the transmission gear provided in the gear case is adjusted to a predetermined position.
In the seedling table lateral feed mechanism in which the amount of lateral movement of the seedling table is adjusted, the gear case is provided with an opening through which the position mark can be visually recognized. The gear shifting timing can be easily understood from outside, and it is not necessary to search for the gear shifting position by manually moving the planting claw, and the gear shifting position can be visually recognized without removing the cover of the gear case. In addition, it is possible to easily perform the lateral feed shift of the seedling mounting table.

According to the second aspect of the present invention, since the lubrication port also serves as an opening for visually recognizing the position mark, no separate window is provided, and the structure is simple.
The cost is good.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is an internal view of a gear case showing a transmission mechanism.

FIG. 3 is a side view of the gear case.

[Explanation of symbols]

 7 Gear case 20 Lubrication cap 20a Window 21a Position mark

Claims (2)

[Claims] 1. A seedling table lateral feed mechanism in which the lateral feed amount of a seedling table is adjusted by adjusting a position mark of a transmission gear provided in a gear case to a predetermined position. A structure of a seedling table lateral feed gear case, characterized in that an opening through which the position mark can be visually recognized is provided in the gear case. 2. The structure according to claim 1, wherein the opening is a lubrication port, and a lubrication cap is provided on the lubrication cap and a visual window is provided. .