JPS6322832Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a mounting structure for a cutting blade set that is easy to attach and detach.

A set of cutting blades (a set of cutting blades consisting of receiving blades, cutting blades, blade holders, etc.) in the reaping section of combine harvesters and binders.
Most of the attachments are done using screws, but it is well known that this method requires a surprising amount of time and effort to tighten and remove the screws. In particular, since many members (lifting case, conveyance chain) are crowded together in the reaping section, it is difficult to tighten or remove a plurality of screws one by one.

Therefore, a mounting structure that does not use screws has been proposed, as seen in Japanese Utility Model Application No. 53-147226.
However, even in this proposal, since the pin is simply engaged and fixed in the receiving hole, there is a problem with the fixing force.

Therefore, this invention provides a mounting structure for a cutting blade set that can be extremely firmly fixed by a wedge action, and also has satisfactory positioning accuracy and attachment/detachment operations.

Hereinafter, specific embodiments of this invention will be described with reference to the drawings.

Figure 1 is a plan view of the main parts of the cutting blade set, and Figures 2 to 4 are X-X', Y-Y', and Z- of Figure 1, respectively.
As shown in the Z' sectional view, the cutting blade set is a well-known one in which the cutting blade 3 is pressed against the receiving blade 1 by the blade holder 2 and overlapped, and in this state, the cutting blade 3 is slid from side to side. It cuts the object to be cut.

To attach the cutting blade set, the receiving blade 1 is fixed to the mounting base 4 in this state, and this is done by a wedge action at both ends of the receiving blade 1.

For installation on the right side, the slope part 5 is attached to the corresponding part of the receiving blade 1.
A wedge body 6 along this slope portion 5 is formed on the mounting base 4 itself. Therefore, by inserting the slope portion 5 of the receiving blade 1 into this wedge body 6, the receiving blade 1
will be regulated both vertically and horizontally.

For installation on the left side, a lever 8 that can be rotated around a support shaft 7 is provided, a wedge body 10 is connected to this lever 8 by a pin 9, etc., and a slope portion 11 formed at the left end of the receiving blade 1 is It is fixed by creating a wedge effect. Note that the wedge body 10 on this side gets on and off the slope part 11 by rotational movement about the support shaft 7 of the lever 8, so that the wedge body 10 and the slope part 11 are connected to each other as shown on the right side. 1
Since it is impossible to make the width of 0 the same for both front and rear positioning, the slope part 11 is formed over a fairly wide range, and this part only acts as a wedge, and the positioning is done by using the mounting base 4. This is done by raising the pin 12 upward and inserting the elongated hole 13 formed in the receiving blade 1 into it. Furthermore, as shown in the plan view of the principal part in FIG. This can also be done by applying the rear edge of the receiving blade 1 to 12.

With such a configuration, the rotational movement of the lever 8 causes
The wedge body 10 acts on the slope part 11, and together with the wedge action of the right wedge body 6 and the slope part 5, fixes the receiving blade 1 to the mounting base 4, and adjusts the tightening operation of the lever 8. This allows the wedge effect to be adjusted.

This adjustment is performed by changing the fixed position of the lever 8. That is, a support 15 and the like are stretched from the frame pipe 14 in correspondence with the tightening position of the lever 8, and a plurality of holes 16 made in the lever 8 are inserted.
..., and the pins 18 are inserted into appropriate holes 17, which are made at different positions in the receiver 15 in order to adjust the tightening force.
Do this by inserting the More specifically, for example, the lever 8 is inserted by inserting the pin 18 into the hole 17 at the leftmost position.
If the clamping force of the receiving blade 1 is insufficient when the receiving blade 1 is fixed, the lever 8 is pressed and bent to rotate around the support shaft 7 in the tightening direction.
The pin 18 is inserted into the right-hand hole 17 located closest to the hole 17 of the lever 8 and the hole 16 of the lever 8. If the tightening force is still insufficient, push the lever 8 further in the tightening direction. A pin 18 is inserted into the hole 17 at the position to fix the lever 8. When the fixing position of the lever 8 is changed in this way, the amount of deflection of the lever 8 gradually increases, and the elastic force of the lever 8 acting on the wedge body 10 increases sequentially.As a result, the wedge acting on the receiving blade 1 The action becomes stronger and the tightening force increases.

Since this invention has the above structure and functions, the following effects can be expected.

First, the cutting blade set is fixed by a wedge action, so it is very strong. Particularly, since one wedge body 10 has a wedge effect due to the lever 8, a lever effect is exerted and a large tightening force can be exerted with a small operating force.

In addition, since tightening can be done from the outside of the machine without using screws, installation and removal operations are extremely easy. In particular, as shown in the plan view of the main part in Fig. 6, when the lever 8 is completely relaxed, the cutting blade set can be pulled out laterally, so even if there are many parts, there will be no obstruction. . If the lever 8 is loosened and the receiving blade 1 is moved to the left by the depth l of the wedge body 6 on the right side, it can be pulled out forward or backward, so it is easy to attach and detach from this aspect as well.

Furthermore, since the cutting blade set is attached by a wedge action at both ends of the receiving blade 1, variations in machining accuracy can be absorbed, and therefore machining can be performed with rough accuracy, which reduces costs. It has various excellent effects, such as the ability to achieve even better results.

Note that the reciprocating motion of the cutting blade 3 is, as is well known, the cutting blade 3
Raise the pin from the opening U of the swinging arm.
This is done by inserting the font, but regardless of the presence of these swing arms, the installation and removal of such a cutting blade set can be easily done by tilting the swing arm and inserting and removing it from the opening. It is clear that

[Brief explanation of the drawing]

The drawings show an embodiment of this invention. Fig. 1 is a plan view of the main part of the cutting blade set, and Figs. 2 to 4 are X-X', Y-Y', and Z- of Fig. 1, respectively. Z′ cross section,
FIG. 5 is a plan view of the main part showing another embodiment, and FIG. 6 is a plan view of the main part showing the attachment/detachment operation. Code, 1...Blade, 5, 11...Slope part, 6,
10...Wedge body, 4...Mounting stand, 8...Lever.

Claims (1)

[Claims for Utility Model Registration] 1. Slope portions 5, 11 are formed at both ends of the receiving blade 1, and the blade is mounted and fixed to the mounting base 4 by the wedge action of the wedge bodies 6, 10 along these slope portions 5, 11. In the mounting structure of the cutting blade set, the slope portion 5 formed on one side of the receiving blade 1 is fitted into the wedge body 6 formed on one side of the mounting base 4, and the other slope portion 11 is fitted onto the wedge body 6 formed on one side of the mounting base 4. A mower that can be freely fitted into a wedge body 10 that is supported by a lever 8 that is pivotally mounted on the other side and that can be tightened and loosened, and that the lever 8 is provided with a means that can adjust the tightening force thereof. Mounting structure of blade set. 2. The mower according to claim 1 of the utility model registration claim, wherein when the lever 8 is loosened, the wedge body 10 connected to the lever 8 separates to the extent that it does not hinder the lateral removal operation of the mower blade set. Mounting structure of blade set.