JPS6215254B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hammer for a crusher for crushing waste products such as garbage, glass, and metal materials.

In a crusher in which a hammer is attached to a rotary body and the hammer is used to crush the waste products, the hammer collides with the waste products and receives a large impact force, which tends to wear them out, so that an efficient crushing effect can always be obtained. In order to do this, it becomes necessary to replace the hammer.

By the way, such a hammer is attached to the rotating body so that it will not come off during use, and when it is time to replace it, it can be easily and easily replaced. Since it is uneconomical to replace the parts, it is necessary to replace only a part of them.

Therefore, a hammer disclosed in Japanese Patent Application Laid-Open No. 158153/1983 has been considered. As shown in FIG. 11, this hammer can be used even when the hammer body 01 is moved toward the rotation axis (base side) along the hammer arm 02 (a state where the coupling pin 03 can be pulled out upward).
The coupling pin 03 is prevented from falling. However, when crushing with a hammer, the hammer body 01 moves violently back and forth due to the impact during crushing, so at this time, the front and rear surfaces of the coupling pin 03, the pin hole 0
Since the front and rear portions of 4, 05, and 06 will wear out significantly, when the hammer body 01 moves forward, the connecting pin 03 will fall as shown in FIG. 13.

Therefore, the coupling pin is designed to prevent the coupling pin from falling even if the front and rear surfaces of the coupling pin and the pin hole are worn out.Examples of the present invention will be described below with reference to the drawings.

FIG. 1 shows a crusher, which includes a funnel-shaped crushing container 1, a rotary shaft 2 vertically rotatably installed in the center of the crushing container 1, and a rotary shaft 2 installed vertically in the vertical direction of the rotary shaft 2. and a plurality of hammers 5, 5... attached to the rotating shafts 3, 3... by a plurality of support shafts 4, 4....

Next, the concrete structure of one embodiment of the hammer 5 according to the present invention will be explained with reference to FIGS. 2 to 9. This hammer 5 includes a hammer arm 6 and a hammer body 7.
and a connecting pin 8 that connects them.

The hammer arm 6 has a boss formed at its base end with a bearing hole 9 through which the support shaft 4 is inserted, and a perfectly circular first pin hole 10 at its tip.
is drilled.

Further, the hammer body 7 is formed into a planar fan shape, and has a connecting hole 11 in the front-rear direction formed therein, and a second pin hole 12 in the upper part communicating with the connecting hole 11 in the vertical direction, and a third pin in the lower part. A hole 13 is bored, and the tip of the hammer arm 6 is removably inserted into the communication hole 11, and the first pin hole 10 is inserted into the communication hole 11.
By matching the upper and lower second pin holes 12 and third pin holes 13, a connecting pin 8, which will be described later, is inserted and the hammer arm 6 and the hammer main body 7 are connected.

The second pin hole 12 at the top is formed to have the same diameter as the first pin hole 10 drilled in the hammer arm, or has a slightly larger diameter, and the third pin hole 13 at the bottom has a length equal to The long hole is formed to have the same length as the diameter of the second pin hole 12 and a slightly shorter length in the left and right direction than the diameter of the first pin hole 10.

The coupling pin 8 is inserted into the second pin hole 12, the first pin hole 10, and the third pin hole 13, respectively, and the lower part 14 corresponding to the third pin hole 13 has a perfect circular cross section, and its diameter is approximately the same length as the left-right length of the third pin hole 13, and the lower portion 14 can move back and forth within the third pin hole 13.

An intermediate portion 15 of the coupling pin 8 corresponding to the first pin hole 10 is concentric with the lower portion 14 and has a right circular cross section with a diameter slightly larger than the left-right length of the lower portion 14 and the third pin hole 13.

Upper part 1 of coupling pin 8 corresponding to second pin hole 10
6 the front surface is formed to have approximately the same diameter as the radius of the second pin hole 12 and to be flush with the front surface of the intermediate portion 15 above and below;
The rear surface is formed with a radius smaller than the radius of the second pin hole 12, and the upper part 16 of the coupling pin 8 is formed with a radius smaller than the radius of the second pin hole 12.
It is designed to be able to move back and forth within the pin hole 12.

Next, the case of assembling the hammer 5 consisting of the hammer arm 6, the hammer body 7, and the connecting pin 8 will be described. First, the tip of the hammer arm 6 is inserted into the connecting hole 11 of the hammer body 7, and the first pin hole 10 is inserted into the connecting hole 11 of the hammer body 7.
are aligned with the upper and lower pin holes 12 and 13.

Next, the lower part 14 of the coupling pin 8 is inserted into the third pin hole 13, the intermediate part 15 is inserted into the first pin hole 10, and the upper part 16 is inserted into the third pin hole 13.
When inserted into the second pin hole 12, the lower surface of the intermediate portion 15 of the coupling pin 8 engages with both side edges of the third pin hole 13, thereby preventing the coupling pin 8 from falling out downward.

When the rotating shaft 2 is rotated from the above state, the hammer body 7 is moved by the hammer arm 6 due to the centrifugal force acting thereon.
6 and 7, the upper part 16 of the coupling pin 8 is inserted into the second pin hole 12.
, the lower part 14 abuts the front surface of the third pin hole 13, and at this time, the middle part 15 of the coupling pin 8
The front upper surface of the second pin hole 12 engages with the front edge of the second pin hole 12 to prevent the coupling pin 8 from moving up and down, thereby reliably connecting the hammer body 7 to the hammer arm 6.
Able to shred waste products.

By the way, the hammer body 7 moves back and forth together with the coupling pin 8 due to the impact caused by the hammer body during crushing, and at this time, the front and rear surfaces of the coupling pin 8 and the front and rear surfaces of the second and third pin holes 12 and 13 are Although this will result in significant wear, the coupling pin 8 will be prevented from falling downward by the lower surfaces on both sides of the intermediate portion 15 and the third
Since this is done by engaging with both side edges of the pin hole 13, there is almost no wear on this part, and as a result, the coupling pin 8 does not fall at all.

In addition to the above-mentioned embodiment, as shown in FIG.
If the rear surface is on the same vertical plane as the rear surface of the lower part 14', and the upper part 16' is circular in cross section and has the same diameter as the lower part 14', vertical movement of the coupling pin 8 when the hammer body 7 moves forward is inhibited. , more secure.

As described above, in the case of a hammer in which the hammer arm and the hammer body are divided into two parts and are connected by a connecting pin, the connecting pin and the pin hole are worn out during crushing. However, even in this case, it is possible to reliably prevent the coupling pin from falling.

[Brief explanation of the drawing]

Figure 1 is a crusher equipped with the hammer of the present invention, Figure 2 is an exploded perspective view of the hammer, Figure 3 is a sectional view taken along line AA of the connecting pin in Figure 2, and Figure 4 is the same as in Figure 2. B-
B sectional view, Fig. 5 is the CC sectional view of Fig. 2, Fig. 6
The figure is a plan view of the hammer, Figure 7 is a sectional view of Figure 6,
8 is a bottom view of FIG. 6, FIG. 9 is a bottom view of the hammer when the coupling pin is inserted, FIG. 10 is a sectional view taken along line DD in FIG. 9, and FIG. 11 is a hammer showing another embodiment. A partial sectional view, FIG. 12 is a sectional view showing a conventional hammer,
FIG. 13 is a sectional view taken along the line DD in FIG. 12, and FIG. 14 is a sectional view showing a conventional hammer. 2 is a rotating shaft, 6 is a hammer arm, 7 is a hammer body, 8 is a connecting pin, 10 is a first pin hole, 11 is a connecting hole, 12 is a second pin hole, and 13 is a third pin hole.

Claims (1)

[Claims] 1. A hammer arm to be connected to a rotating shaft, a hammer body having an internal connecting hole in the front-rear direction that is removably inserted into the hammer arm, a perfectly circular first pin hole drilled in the hammer arm, and the a coupling pin that connects the hammer arm and the hammer body by being inserted into upper and lower second and third pin holes drilled in the hammer body so as to communicate with the connection holes, respectively; The pin hole is formed into an elongated hole that is long in the front-rear direction so that the lower part of the coupling pin corresponding to the third pin hole can be moved back and forth within the third pin hole, and the lower part of the coupling pin corresponding to the first pin hole The intermediate portion of the coupling pin has approximately the same diameter as the first pin hole and is larger than the horizontal length of the third pin hole, and the second pin hole is formed to have approximately the same diameter as the first pin hole. and a hammer for a crusher, wherein the upper front surface of the engagement pin corresponding to the second pin hole is located rearward than the front surface of the intermediate portion of the engagement pin.