JPH01117701A - Device for mounting tillage tine - Google Patents

Abstract

PURPOSE:To facilitate exchange and contrive improvement in handling performance, such as maintenance and setup, by providing a mounting base on the outer periphery of a tillage shaft and detachably mounting tine holders for mounting the tillage tines on the mounting base. CONSTITUTION:Plates 10 and 10 for mounting a pair of two tine holders are fixed by welding, etc., at a suitable interval on the outer periphery of a tillage shaft 4. Tine holders 12 for mounting the tillage tines are interposed and mounted between the plates 10 and 10 and fixed with bolts 13 and nuts 14. The tine holders 12 are formed by mutually welding two divided pieces 15 and 16 into a pair of tine holders 12. Engaging parts 17 and 18 on the side of the tine holders 12 and engaging parts on the side of the tillage tines are respectively and correspondingly tilted backward or forward in the forward direction and the tillage tines can be tapped with a hammer, etc., and used as tillage tines for normal or reverse rotation. The tine holders 12 are exchanged by loosening bolts 13 and nuts 14, demounting the tine holders 12 from the plates 10 and 10 and exchanging the tine holders with new ones 12. Thereby exchange can be facilitated and efficiency of maintenance and setup can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a device for attaching a tilling portion of a rotary tiller to a tiller shaft.

[Prior Art] Conventionally, this type of mounting device welds the bases of a plurality of rectangular cylindrical claw holders at appropriate intervals on the outer peripheral surface of the tilling shaft.
The tiller was inserted into this claw holder and fixed with bolts, nuts, etc.

[Problems to be Solved by the Invention] However, in the case of the above-mentioned conventional device, there is a drawback that it is a chore to replace the claw holder when it becomes damaged or worn out due to long-term use. Means for Solving the Problem] This invention is proposed in view of the above drawbacks, and includes:
For this reason, the following technical measures were taken. That is, a mounting board 10.10 is provided on the outer periphery of the tilling shaft 4, and a claw holder 12 for mounting the tiller part is removably attached to the mounting board 10.10 via a fastener 13.14. The structure of the attachment device for the tilling part is characterized by:

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

First, to explain the configuration, 1 is a rotary tiller, and this rotary tiller F! Reference numeral 1 denotes a transmission gear case 3 that supports an input shaft 2 that rotates by receiving rotational power from a tractor, and a cheno case 5 that supports one end of a tilling shaft 4.
．． Main cover 8 that covers the top of the tilling section, main cover 8
It consists of a rear cover 9 etc. which is pivotally attached to the rear of the vehicle. On the outer peripheral surface of the tilling shaft 4, a set of two plates 10.10 for attaching claw holders are fixed at appropriate intervals by welding or the like. As shown in FIG. 2, the plates 1o and 10 are provided so as to intersect with each other so as to be substantially orthogonal to the axis of the tilling shaft 4, and the two plates 10 and 10 are arranged in the plane of the path between the tillers when viewed from the rear. It is fixed so that it is located inside. A pawl holder 12 for attaching the tilling section 11, which can be used both in forward and reverse directions, is interposed between the plates 10 and 10, and is fixed by bolts 13 and nuts 14. Claw holder 12
are made of spring steel, and a set of pawl holders 12 is formed by welding two divided pieces 15, 16 together. One of the divided pieces 15 has mounting surfaces 15a and 15b formed along the front-rear direction as shown in FIG. 3 for attachment to the plate 10.10, and the claw holder 12 is At this time, wedge-shaped locking portions 17 and 18 are formed so as to become tapered toward the tip. Wedge-shaped locking portions (not shown in the drawings) are also formed at the lower front edge and rear edge of the tilling portion 11 inserted into this, and the locking portions 17 and 18 on the claw holder 12 side and the tilling portion 11
The tilling section 11 can be used as a forward rotation or reverse rotation rotation by collapsing the side locking portions to the rear or front in the direction of travel and strongly hitting the tillage section 11 with a hammer or the like.

Incidentally, reference numeral 20 is a through hole through which a pin is inserted to prevent the cultivating part 11 inserted into the claw holder 12 from falling out. If the plowing work is performed in this way and the claw holder 12 becomes worn or damaged due to long-term use,
The claw holder 12 is removed from the plates 1o and 10 by loosening the bolts 13 and nuts 14 and replaced with a new claw holder 12. The claw holder 12 shown in this embodiment is made of spring steel in order to improve the biting when installing the tiller 11. However, if the materials of the tiller shaft 4 and the claw holder 12 are different, it is possible to integrate the two by welding. If this is done, the spring steel side tends to harden and become brittle due to heat, and there is a risk that the claw holder 12 will be damaged by impact, etc. However, as mentioned above, even if the claw holder 12 is damaged, it can be easily removed. This makes it easy to replace. Note that FIGS. 4 and 5 show a second alternative embodiment, in which the stay 24 corresponding to the plate 10.10 described above is used.
A small gap is provided between the two front stays 24.24 and the rear stay 24.24, and a set of two claw holder divided pieces 25.25 are interposed in this gap. , the claw holder 12 is fixed to the stay 24 with bolts 26 and nuts 27 so as to sandwich them. 28 is a through hole bored in the claw holder divided piece 25.25, and 29 is a pin for preventing the tilling part 11 from being pulled out, which connects the through hole (not shown) provided in the lower part of the tilling part 11 and the claw holder divided piece 25. 25 through holes 28.2
8, and the U-shaped hook 30 pivotally attached to the end of the pin 29 is rotated 90 degrees about the fulcrum 31 and fixed. In the case of this embodiment, since the two divided pieces 25.25 are provided in a symmetrical manner, parts can be shared between the left and right sides, making it easier to manage parts and lowering the overall manufacturing cost. Has characteristics.

Although the present invention has been given as an example, it goes without saying that the present invention may be applied to a rectangular tube-shaped claw holder in which a regular machete claw or the like is fastened and fixed with bolts and nuts.

[Effects of the Invention] Since the present invention is configured as described above, it has the following technical effects. That is, since the claw holder 12 is configured to be removably attached to the mounting board 10.10.24.24 of a plate, stay, etc. on the outer periphery of the tilling shaft 4,
Even if the claw holder 12 is damaged due to the #connection load received during tilling work, or if the insertion support part of the tilling part 11 of the claw holder 12 is worn out due to long-term use, it can be easily replaced, making maintenance and maintenance easier. Performance is improved.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Figure 1 is a side view of the entire rotary tiller, Figure 2 is a side view of the main parts, and Figure 3 is a side view of the rotary tiller.
4 is a side view of the second embodiment, and FIG. 5 is a view taken along arrow B in FIG. 4. Explanation of symbols 1 Rotary tilling device 4 Tilling shaft 10 Mounting board 12 Claw holder

Claims (1)

[Claims] A feature is that mounting boards 10, 10 are provided on the outer periphery of the tilling shaft 4, and a claw holder 12 for mounting the tiller is detachably attached to the mounting boards 10, 10 via fasteners 13, 14. A mounting device for the tillage section.