JPH029930Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a chipper knife replacement aid used when replacing the chipper knife attached to the rotating disk of a chipper that crushes wood to produce chips. It is related to.

[Conventional technology]

Conventionally, a fifth rotary disk 7 is attached to the rotary disk 7 that rotates within the chipper.
To replace the chipper knife 4 installed in the state shown in the figure, while one person is holding down the chipper knife 4 and the head of the bolt 5 on one side of the rotating disk 7, One person was threading and unscrewing the nut 6 onto the tip of the bolt 5.

[Problem that the invention attempts to solve]

However, with the above method, 1 chipa twice a day
The problem was that it took two people 40 minutes each time to replace the four chipper knives attached to each stand, which was inefficient.

[Means for solving problems]

The inventors of the present invention repeatedly conducted various studies to solve the above problems, and found that since the rotating disk is installed vertically and the bolt holes provided through the rotating disk are almost horizontal, each If it is possible to prevent the bolt from slipping out of the chipper knife, it will prevent the bolt from slipping out even if a small amount of force is applied, such as when screwing a nut onto the bolt after inserting the bolt through the chipper knife into the bolt hole provided in the rotating disk. It was discovered that the chipper knife does not come off the rotating disk because it does not slip out of the bolt hole, and furthermore, the three bolts and the chipper knife are integrated through a retainer plate that contacts each bolt and the chipper knife, and is provided on the retainer plate. We found that if we could do this with a magnet that can apply or stop magnetic force by turning a knob, we would no longer need a chipper knife or a worker to hold down the bolt, and we would be able to solve the above problem with a simple operation. The tipper knife replacement aid according to the present invention has been completed.

That is, the present invention provides a magnetic force that can be applied to one side of a holding plate having an area that can simultaneously contact the heads of each bolt attached to the chipper knife by turning a knob to integrate the holding plate and the chipper knife. To provide a chipper knife replacement aid characterized in that a holder and a handle are fixed.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The chipper knife replacement aid according to the present invention will be described below based on an embodiment shown in the drawings.

Fig. 1 is a perspective view of one embodiment of the chipper knife replacement aid according to the present invention, and Fig. 2 shows the state in which the chipper knife replacement aid shown in Fig. 1 is integrated with a chipper knife to which a bolt is attached. 3 is a perspective view of the chipper knife with the bolt attached, and FIG. 4 is an explanation showing the state in which the chipper knife is fixed to the rotating disk using the chipper knife replacement aid shown in FIG. 1. FIG. 5 is an explanatory diagram showing the structure of the chipper.

In the drawing, reference numeral 1 denotes a holding plate made of a stainless steel plate or the like having an area that can contact the head of each bolt 5 attached to the tipper knife 4, and 2 is fixed to one side of the holding plate 1 by welding, gluing, etc. A magnetic holder that can apply a magnetic force that can integrate the presser plate 1 and the chipper knife 4 by turning the knob 2a; 3 is the magnetic holder 2 of the presser plate 1;
The tipper knife replacement aid according to the present invention is composed of the presser plate 1, the magnetic holder 2, and the handle 3. Reference numeral 4 designates a chipper knife that is replaced using the chipper knife replacement aid according to the present invention, and this chipper knife 4 has cutting blades on both sides opposite to the edge where the cutting edge is provided for adjusting the cutting depth of the chipper knife. An adjustment bolt 4a is screwed therein, and as shown in FIG. 3, a long hole 4b into which a bolt 5 for fixing the chipper knife is inserted is provided, and a groove 4c is provided for co-rotation of the bolt 5 and for preventing the head of the bolt 5 from protruding. It is being Reference numeral 5 designates a bolt that is inserted into the elongated hole 4b of the chipper knife 4 and is engaged so that the head does not protrude from the groove 4c of the chipper knife 4.The bolt 5 has a shape such that it does not interfere with chipping. It is preferable to have a shape as shown in FIG. 6 is a nut that is screwed onto the tip of the bolt 5 to fix the chipper knife 4 to the rotary disk 7 rotating inside the chipper; 7a is a bolt hole provided in the rotary disk; 8, 9, 10, 11, 12 are nuts These are a knife carrier, a blade liner, a receiving blade, a sport, and a sliding blade, which are provided as shown in FIG. 5, respectively.

[Effect]

Hereinafter, a method for replacing the chipper knife 4 using the chipper knife replacement aid according to the present invention shown in the drawings will be described.

First, the rotation of the rotary disk 7 inside the chipper is stopped, and the retaining plate 1 of the chipper knife replacement aid according to the present invention is attached to the chipper knife 4 so as to cover the head of the bolt 5 that fixes the chipper knife 4 to the rotary disk 7. the knob 2a of the magnetic holder 2.
is turned to apply magnetic force to make the chipper knife 4 attract the chipper knife replacement aid according to the present invention. Next, remove the nut 6 from the bolt 5 on the back side of the rotary disk 7, hold the handle 3 on the front side of the rotary disk 7, and pull out the chipper knife replacement aid according to the present invention halfway, and then hold the chipper knife 4 and pull it out. Yotsute bolt 5 and chipper knife 4
and are removed from the rotating disk 7 at the same time. After that, turn the knob 2a of the magnetic holder 2 to stop the magnetic force, remove the chipper knife replacement auxiliary tool from the chipper knife 4, pull out the bolt 5 from the long hole 4b of the chipper knife 4, and then sharpen and cut the cutting edge in advance to replace it. Adjust the cutting edge adjustment bolt 4a
The elongated hole 4 of the chipper knife 4 is adjusted by
The bolt 5 is inserted into the hole 4b, and the head of the bolt 5 is engaged with the groove 4c to prevent the nut 6 from rotating together with the nut 6 and to prevent it from protruding. In this state, in order to prevent the bolt 5 from coming off the elongated hole 4b of the chipper knife 4, attach the presser plate 1 of the chipper knife replacement aid to the chipper knife 4.
, turn the knob 2a of the magnetic holder 2 to apply magnetic force, attract the chipper knife 4 to the chipper knife replacement aid, and remove the chipper knife 4.
Holding the handle 3, insert the bolt 5 inserted into the long hole 4b of the chipper knife 4 into the bolt hole 7a provided in the rotating disk 7, and then holding the handle 3, push the chipper knife 4 until it comes into contact with the rotating disk 7. . Next, screw the nut 6 onto the tip of the bolt 5 on the back side of the rotating disk 7, and finally turn the knob 2a of the magnet holder 2 on the front side of the rotating disk 7 to stop the magnetic force.
Chipper knife replacement aid: Chipper knife 4
Finish replacing the chipper knife by removing it from the

When replacing the chipper knife using the chipper knife replacement aid according to the present invention as described above,
Since the rotating disk is installed vertically, the bolt holes provided almost vertically on the rotating disk are almost horizontal, and each bolt and chipper knife replacement aid are fixed so that they do not come off. , even if the bolt is pushed a little when screwing the nut onto the tip of the bolt, the bolt will not fall out, and the nut can be screwed onto the tip of the bolt without holding the chipper knife or bolt on one side of the rotating disk. Since it can be removed, you can work alone, and if you make the magnetic force of the magnetic holder strong, you can carry the chipper knife by grasping the handle without worrying about the tip of the chipper knife. It can be done.

〔effect〕

As detailed above, the chipper knife replacement aid according to the present invention has a simple structure, is inexpensive, and can be manufactured. Not only can you safely use an impact wrench, etc. when tightening, it can also be simplified, and it can be done by one person in 20 minutes to replace the four chipper knives attached to one chipper. , the number of times you have to hold the chipper knife directly reduces the risk of injury to your hands due to the cutting edge, etc.
It is of great value economically, practically, and safely.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one embodiment of the chipper knife replacement aid according to the present invention, and Fig. 2 shows the state in which the chipper knife replacement aid shown in Fig. 1 is integrated with a chipper knife to which a bolt is attached. 3 is a perspective view of the chipper knife with the bolt attached, and FIG. 4 is an explanation showing the state in which the chipper knife is fixed to the rotating disk using the chipper knife replacement aid shown in FIG. 1. FIG. 5 is an explanatory diagram showing the structure of the chipper. 1...Press plate, 2...Magnetic holder, 2
a... Knob, 3... Handle, 4... Chipper knife, 4a... Cutting blade adjustment bolt, 4b... Long hole, 4
c...Groove, 5...Bolt, 6...Nut, 7...
Rotating disk, 7a...Bolt hole, 8...Knife carrier, 9...Blade mouth liner, 10...Blade, 1
1...Sport, 12...Slide blade.

Claims (1)

[Claims for Utility Model Registration] 1. On one side of the presser plate 1, which has an area that can simultaneously contact the heads of each bolt 5 attached to the chipper knife 4, there is a knob that controls the magnetic force to integrate the presser plate 1 and the chipper knife 4. A chipper knife replacement aid characterized in that a magnetic holder 2 and a handle 3, which can be attached by turning 2a, are fixed. 2. The chipper knife replacement aid according to claim 1, wherein the presser plate 1 is made of a stainless steel plate.