JPS6036015Y2 - Link mounting structure of mower blade drive device - Google Patents

Description

[Detailed description of the invention] This invention is applicable to reciprocating drive links of clipper-type reaping devices, etc.
The cutting blade is driven through a link attached by inserting a driving shaft connected to the tip of the crank arm, a driven shaft inserted through the tip of the link, and a swinging arm connecting a driven wheel. The link attachment of a cutting blade drive device in which a bearing is interposed in the fitting connection portion between the shaft link, the drive shaft, and the driven shaft is related to the structure.

According to the structure of the officially registered link installation of the cutting blade drive device, even though the crank arm rotates at a relatively high speed,
This is advantageous in terms of maintenance because it reduces wear and improves durability of the connection part with the crank arm and the connection part between the link and the swing arm. Conventionally, as shown in FIG. By fitting the cylindrical member 20 fixed to one end onto the bearing 16 and fitting the C-shaped elastic member 21 into the groove 20a formed on the inner peripheral surface of the cylindrical member 20, The link 14 was constructed to prevent it from coming off in the direction of the rotational axis, but in this case, the link and the cylindrical member had to be welded, which caused thermal distortion during the welding process. This tends to cause deformation and strength reduction of the link, and although it is possible to integrally mold the link and the cylindrical member by casting, in this case, there is a problem in that the manufacturing cost increases.

In view of the above-mentioned circumstances, an object of the present invention is to enable a simple and inexpensive construction using as few members as possible and as few man-hours as possible.

That is, in the link mounting structure of the cutting blade drive device according to the present invention, in the officially registered structure, a circumferential groove is formed on the outer periphery of the outer race of the bearing, and a through hole is formed in the link so that the outer race of the bearing can be attached to the outside of the bearing. and a member is fitted into the circumferential groove to prevent the link from coming off in the direction of the rotation axis, and the link is made of sheet metal. In addition to this, the outer race of the bearing can also be used as a member for mounting the abutment regulating member, reducing the number of parts, making the overall structure simple and inexpensive. I was able to do it.

Further, the circumferential grooves are formed at three locations on the outer periphery of the outer race separated by a distance in the bearing axial direction corresponding to the wall thickness of the link, and two members fitted into these two circumferential grooves are inserted into the outer race. If the removal of the link is restricted, for example, a stepped portion may be formed at one end of the outer race in the direction of the rotational axis, and removal of the link may be restricted from moving the outer race. This has the advantage of making it easier to process the race.

Hereinafter, an embodiment of the present invention will be described with respect to a wet field binder.

As shown in FIGS. 1 and 2, a pulling device 3, a clipper-type reaping device 4, and a reaping stem culm are set at the front ends of a pair of left and right pipe frames 2, 2 extending forward from the driving unit 1. A reaping bundling section A equipped with a device 5 for converging and discharging the bundles laterally and outwardly is installed in series, and between the left and right pipe frames 2.2 there is provided a running wheel 6 that can be driven up and down. At the same time, on the lateral outer side of the fuselage on the side of the binding device 5, there is a float 7 for floating and supporting the fuselage, and on the upper part of the float 7, a plurality of bundled stem culms released from the binding device 5 are arranged. A collecting section 8 is provided for collecting and holding the bundles in an inclined position with the tips of the bundles located laterally outward.

As shown in FIG. 3, the reaping device 5 connects one end of an arm 9 that is swingable around the vertical axis to a knife head of a cutting blade 11 that is slidable only in the left and right directions with respect to a fixed receiving blade 10. II
At the same time, the other end of the swing arm 9 and the free end of the crank arm 13 fitted on the rotating shaft 12 are pivotally connected via the link 14, so that the crank arm The cutting blade 11 is configured to be reciprocated from side to side by the drive rotation of 13.

As shown in FIGS. 4 and 5, the link 14 is relatively rotatably attached to the drive shaft 15 on the crank arm 13 side via a bearing 16.
4 has a through hole 14 that is slightly larger than the outer diameter of the bearing 16.
a, and the link 14 is positioned externally on the bearing 16, and the outer surface of the bearing 16 is
Circumferential grooves 17.1 are provided on the outer peripheral surface of the chair 16A at three locations separated by a distance in the direction of the bearing axis corresponding to the wall thickness of the link 14.
7, and members 18, 18 such as two C-links fitted in these two circumferential grooves 17, 17 are configured to contact and prevent the link 14 from coming off in the direction of the rotational axis. ing.

Further, a side 14 of the link 14 along the longitudinal direction thereof.
b, 14b is bent downward.

The structure for attaching the driven shaft 15' connected to the swing arm 9 to the other end of the link 14 via a bearing 16 is also constructed in the same manner as described above.

Further, an operating lever 19 is provided for swinging the float 7 downward around the horizontal axis 1 at the front end thereof and tilting the body in the turning direction, and also moves the collecting section 8 up and down with respect to the float 7. The installation is configured so that the position can be changed and fixed in any direction.

[Brief explanation of the drawing]

The drawings show an example of the link installation structure of the cutting blade drive device according to the present invention, and FIG. 1 is an overall side view of the wet field binder, FIG. 2 is a front view, and FIG. 3 is a partially cutaway view of the reaping device. The plan view, Figure 4 is a vertical sectional view of the main part, and Figure 5 is the ■ in Figure 4.
6 is a vertical sectional view showing the structure of a conventional link attachment. 14...Link, 14a...Through hole,
16...Bearing, 16A...Outer race, 17...Peripheral groove, 18...
Element.

Claims (1)

[Claims for Utility Model Registration] ■ A link 14 attached by inserting a driving shaft 15 connected to the tip of the crank arm 13, a driven shaft 15' inserted into the tip side of the link 14, and a driven shaft 15'. The cutting blade driving device drives the cutting blade 11 via the connected swinging arm 9, and has bearings 16 and 16 interposed in the fitting connection portions between the link 14, the driving shaft 15, and the driven shaft 15'. In the structure of the link attachment, a circumferential groove 17 is formed on the outer periphery of the outer chair 16A of the bearing 16, and
A through hole 14 is formed in the link 14, and the bearing 16 is externally fitted into the link 14, and a member 18 is fitted into the circumferential groove 17 to prevent the link 14 from coming off in the rotation axis direction. The link attachment of the mower blade drive device is characterized by a structure. (2) The circumferential grooves 17 are formed at three locations on the outer periphery of the outer chair 16A separated by a distance in the direction of the bearing axis corresponding to the wall thickness of the link 14;
The link mounting structure of the cutting blade drive device according to claim 2 is a structure in which the link 14 is prevented from coming off by two members 18 and 18 fitted in 17 and 17.