JPS63254902A - rotary tiller - 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 rotary tiller in which a rotary cover covering a tiller portion rotates back and forth around the axis of a tiller shaft.

[Prior Art] There is a type of tilling cover that is rotatable in order to easily adjust the length of the tilling cover and improve work efficiency. That is, by aligning the rotational fulcrum of the tilling cover with the axis of the tilling shaft, and turning the adjustment handle of the telescoping device interposed between the machine frame on the rotary body side and the cover, the cover can be moved in the front-back direction. It was composed of

[Problems to be Solved by the Invention] In the case of such a tilling device, the tilling cover is constructed so that it can pass through and rotate within the space between the transmission case supporting both ends of the tilling shaft and the side plate. Therefore, when an extension tilling shaft was attached to the shaft end of the tilling shaft to widen the tilling width, the extended portion could not be covered with a rotatable cover.

[Means for Solving the Problems] The present invention is proposed in view of the above-mentioned problems, and for this purpose, the following technical measures have been taken. That is,
In a side drive type rotary tiller 1 configured such that both ends of a tiller shaft 3 are supported by a transmission case 4 and a side plate 5.

A bearing metal 17 that rotatably supports the tilling shaft 3 is configured to be integrally rotatable with the rotary cover 12, and the bearing metal 17 includes a cover for covering an extension shaft attached to the shaft end of the tilling shaft 3. The rotary tilling device is characterized in that it includes 21 mounting seats 22.

[Operations and Effects of the Invention] When carrying out work by attaching another tilling shaft in a cantilevered state to the shaft end of the tilling shaft 3 in order to increase the tilling width, first attach the extension shaft to the mounting seat 22 provided on the bearing metal 17. An auxiliary cover 21 is attached to cover the top of the tilling shaft 3, and then an extension shaft is connected to the end of the tilling shaft 3. After extending the shaft in this way, when the rotary cover 12 is adjusted to rotate around the axis of the tilling shaft 3,
Since the auxiliary cover 21 is also rotated at the same time, there is no need to adjust the rotation of the main rotary cover 12 and the rotation of the auxiliary cover 21 on the extension shaft side separately as in the past. The required time can be shortened and work efficiency can be improved.

[Example] Hereinafter, the present invention will be described in detail based on the drawings.

First, to explain the configuration, 1 is 3 at the rear of the tractor.
This is a side drive type rotary tiller that is connected via a point linkage mechanism or the like so that it can be raised and lowered. This rotary tilling device 1 consists of a tilling shaft 3 on which a plurality of tilling claws 2 are installed, a chain case 4 and a side plate 5 that are located on both left and right sides of the tilling shaft 3, and a side plate 5 that supports the tilling shaft 3, and a tractor side. An input shaft 7 is rotatably mounted forward on a gear box 6 in the lateral center to receive rotational power, a drive pinion gear 8 is formed at the rear end of the input shaft 7, and a bevel gear meshes with the drive pinion gear 8. 9. Bevel gear 9
The transmission shaft 10. is spline-coupled with the transmission shaft 10. and transmits power to the Cheno case 4 side. The machine frame is composed of a gear box 6 and a chain case 4, a hollow pipe-shaped connecting frame 11 that connects the gear box 6 and the side plate 5, a rotary cover 12 that covers the top of the tilling section, etc. The rotary cover 12 is configured to be rotatable around the axis of the tilling shaft 3, as will be described later.

FIG. 2 shows the shaft part of the tilling shaft 3 on the side plate 5 side. To explain its specific structure, the side plate metal 13 is integrally attached to the lower part of the side plate 5 by bolts 14... A bush 16 is attached to a circular notch hole 15 formed in the side plate metal 13, and a bearing metal 17 supporting one end of the tilling shaft 3 is rotatably attached thereto. Bearing metal 17
A side plate 19 integral with the rotary cover 12 is fixed to the flange 18 formed on the outer periphery of the rotary cover 12 with bolts 20.
On the other hand, on the opposite side of the side plate 5 from the flange 18, a mounting metal 22 constituting a mounting seat for mounting an auxiliary rotary cover 21 is fixed to the bearing metal 17 by tightening bolts 23. Note that the auxiliary rotary cover 21 is fixed to the mounting metal 22 with bolts 52.

This mounting metal 22 not only constitutes the mounting portion of the auxiliary rotary cover 21, but also has the function of preventing the bearing metal 17 from being removed when it is mounted. In the same figure, reference numeral 24 denotes a spline groove formed at the end of the tilling shaft 3, and when an extension claw (not shown) is attached, the flange 25 is fitted into the spline groove 24 and fixed with bolts 26.

Bolt insertion holes 27 are provided in the flange 25 at appropriate intervals on its circumference, and the flange on the extension claw side is combined with the bolt insertion holes 27 and fastened with bolts (not shown). On the other hand, a bearing metal 30 is fixed to the lower part of the Cheno case 4 side, and a locking member 32 for holding the shoulder of the bearing 31 is fixed to the bearing metal 30 by bolts 33 and nuts 34 inside the bearing metal 30. ing. And bearing metal 3
A bushing 35 is interposed on the outer periphery of the locking member 32 and the rotary cover 12, and a rotating metal 36 for fixing the side plate 19 integral with the rotary cover 12 is rotatably fitted onto the bushing 35. There is. Numeral 37 is a bolt for fixing the side plate 19 to the rotating metal 36. In addition, 38 in the figure
．． 38 is a seal, 39 is a straw removal plate, 40 is an adjustment handle for adjusting the height of the gauge wheel 41, and 42 is a mast. Reference numeral 43 denotes a handle for rotating the rotary force bar 12 in the front-rear direction, the upper part of which is supported by a plate 44 on the side of the mast 42, and the lower end thereof extending diagonally backward and upward from the upper part of the rotary cover 12. It is attached to another protruding plate 45. 46 is rotary cover 12
The rear cover 46 is provided with side covers 47.47 on both left and right sides thereof so as to overlap with the side plates 19.19,
When the rear cover 46 swings back and forth, the side covers 47, 47 swing back and forth together with it. 48 is Hitsuchi.

When the adjustment handle 40 is turned, the pitch 48 is rotated up and down about a fulcrum pin 51 of a plate 50 provided on the side of the gear box 6. Reference number 5 in Figure 2
3.54 is a seal, 55 is a bearing, and 56 is a straw removal plate. Also, Fig. 3.

Reference symbols 57 and 58 in FIG. 4 indicate sprockets;
59 is a chino, 60, 61 is a bearing, 62 is a seal 63 is an oil filler port.

For example, on the upper side, move the gauge 1 in the direction of shallowing the plowing depth 4
When adjusting the height of the gauge 41, the adjustment handle 40 is rotated to push down the gauge 41. As a result, the plowing area will rise relatively and the plowing depth will become shallower. Next, the rotary cover 12 is rotated by operating the handle 43 provided on the side of the mast 42 for rotating the rotary cover 12.
Rotate clockwise in Fig. 1. In this case, since the side plate 19 and the side cover 47 rotate together with the rotary cover 12 around the axis of the tilling shaft, the lateral sides of the tilling section are always covered, and the rear cover 46 The angle between the soil and the ground is also approximately constant, so the leveling performance of the soil does not change.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a back sectional view of the side plate, and FIGS. 3 and 4 are sectional views of essential parts. Explanation of symbols 1 Rotary tilling device 2 Tilling claw 3 Tilling shaft 4 Transmission case (cheno case) 5 Side plate 12 Mouth to tarry cover 17 Bearing metal 21 Auxiliary rotary cover 22 Mounting seat (mounting metal)

Claims (1)

[Claims] In a side drive type rotary tiller 1 configured such that both ends of a tilling shaft 3 are supported by a transmission case 4 and a side plate 5, a bearing metal 17 that rotatably supports the tilling shaft 3 is provided together with a rotary cover 12. A rotary cultivating device configured to be integrally rotatable, and characterized in that this bearing metal 17 is configured with a mounting seat 22 of a cover 21 for covering an extension shaft attached to the shaft end of a cultivating shaft 3. .