JPS6130871B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a breaker-like vibration crusher for crushing concrete, rock, asphalt, and the like.

This type of vibratory crusher usually uses a chisel supported on the vibratory crusher body to drive it into the object by violently hitting it with a piston driven by fluid pressure inside the vibratory crusher body. This is a machine that creates cracks in the crushed material to crush it, and is generally used by being attached to the arm of a shovel-type excavator.

For this reason, during use, intense noise, mainly the sound of metal tapping, causes pollution problems.

Therefore, there has been a strong desire to develop a vibratory crusher that can perform low-noise construction.

In response to the above-mentioned demand, the present invention provides a vibration crusher that can perform crushing work with low noise, and includes an outer casing provided with a chisel insertion hole at the bottom;
A vibration crusher body that can be freely loaded into the outer casing, a soundproof vibration absorbing member attached to the inside of the outer housing wall, and a vibration crusher body formed between the soundproof vibration absorber and the vibration crusher body. a soundproof and vibration-absorbing layer consisting of a void; an inner cap that covers the top of the vibration crusher body inserted into the outer casing; and a lid body that closes the upper end opening of the outer casing and the inner cap. It is characterized by a mechanism in which the noise generated from the vibration crusher is absorbed and alleviated within the outer casing by having a donut-shaped elastic plastic member inserted into the casing.

Next, the vibration crusher of the present invention will be explained by way of examples with reference to the drawings.

Fig. 1 shows an embodiment of the vibration crusher of this invention.
It is shown in a perspective view of the exterior as seen from the obliquely upper part of the dorsal side.
The figure shows a rear view, Fig. 3 shows an enlarged longitudinal rear view of the upper part with the lid removed, and Fig. 4 shows a rear view of the upper part with the lid removed.
Fig. 5 is an enlarged plan view of the outer casing excluding the lid, Fig. 6 is an enlarged longitudinal sectional rear view of the lower part of the outer casing, and Fig. 7 is a cross-sectional view of the outer casing excluding the lid. Each is shown in a sectional view. As shown in the drawings, the vibration crusher A of the present invention includes a vibration crusher main body 1 (third
(shown by imaginary lines in Figures to Figures 7) is inserted into the outer casing 2 from above, the lid body 3 is attached to the outer casing 2 by tightening 4 groups of bolts and 5 groups of nuts, and the vibration crusher main body 1 is attached. The vibration crusher is sealed in an outer casing 2 so that the noise generated from the vibration crusher main body 1 is absorbed within the outer casing 2 so that the sound emitted to the outside is relatively low and loud. The main body of the vibration crusher inserted into the housing 2 consists of a wear-resistant synthetic resin plate 6 attached to the inner surface of the lower wall of the outer casing 2, and a wear-resistant synthetic resin plate 6 attached to the inner surface of the upper wall of the outer casing 2. 7, the upper and lower parts of the outer surface are supported, allowing for vigorous vertical sliding with an amplitude of about 20 mm. In this embodiment, the wear-resistant synthetic resin plates 6 and 7 are fixed by a group of eight embedded screws and are replaceable.

An inner cap 9 shown in an enlarged perspective view in FIG. 8 is placed over the top of the vibration crusher main body 1 inserted into the outer casing 2, and between the inner cap 9 and the lid 3, It is shown in an enlarged plan view in Fig. 9,
A solid donut-shaped rubber 10 shown in a longitudinal sectional front view in FIG. 10 is charged as an example of a donut-shaped elastic plastic member.

The rubber 10 is made of a high-quality rubber product such as a tubeless tire for a work vehicle, and a center hole 10A is fitted into a guide protrusion 11 that is erected and welded at the center of the upper surface of the top plate 9A of the inner cap 9. The compressive force accompanying the vertical vibration of the machine body 1 is received via the inner cap 9, and the compressive force is compressed and deformed in the vertical, horizontal and combined directions, thereby strongly absorbing and buffering the vibration of the vibration crusher body 1. .

The guide protrusion 11 is a tube member with an outer diameter smaller than the inner diameter of the center hole 10A of the rubber 10 and a height smaller than the height of the rubber 10, and has a horizontal grip inside. A rod 12 is fixed to the inner cap 9 to facilitate the operation of pulling the inner cap 9 upward from inside the outer casing 2.

By the way, the outer casing 2 has inside the lower end of the square body part 13,
As shown in FIGS. 6 and 7, the square box member 14 is fitted and fixed by welding a and b to form the bottom part, while the inner surface of the wall is placed in a predetermined position with the adjacent one. A plurality of vertical ribs 15 are provided protrudingly arranged at intervals of .

The vertical rib 15 has a length and an attachment position such that its lower end is located slightly above the upper end of the square box member 14 and its upper end is located slightly below the lower limit position of the inner cap 9, The protrusion amount is
Between the vibration crusher main body 1 inserted into the outer casing 2,
The dimensions are such that there is a gap of approximately mm.

A soundproof and vibration absorbing member 16 is attached to the inner surface of the wall of the outer casing 2 between the vertical ribs 15 .

The soundproofing and vibration-absorbing member 16 is a multi-layered or single-layered plate-like member mainly composed of rubber and metal, and has a thickness of about 2 to 1/3 of the protrusion amount (horizontal protrusion height) of the vertical ribs 15. The thickness is such that a sufficient gap S can be maintained between the vibrating crusher body 1 and the vibrating crusher body 1.

The void S acts effectively in preventing the noise generated from the vibration crusher main body 1 from propagating to the outside within the outer casing 2 which has a nearly completely sealed structure.

The lower end surface of the vibration crusher main body 1 inserted into the outer casing 2 is brought into contact with a thick rubber plate 17 that is in contact with the inner surface of the bottom plate portion 14A of the square box member 14,
A chisel attachment cap 1 is attached to the rubber plate 17 of the bottom plate portion 14A.
Holes 14B and 17A are bored through which the holes 8 are inserted.

The base of the chisel 19 is fitted into the chisel attachment cap 18, and is supported using a retaining pin (not shown) to prevent it from coming off.

The chisel 19 is different from other conventional hoops in that the base end (the upper end inserted into the vibration crusher body 1) is struck by a piston (not shown) built into the vibration crusher body 1 and moves up and down violently. However, a rubber layer 20 is formed between the flanges 19A and 19A provided at a predetermined position on the part exposed to the outside of the outer casing 2, and a sound-absorbing structure is adopted in which the metal tapping sound becomes a muffled hitting sound. The difference is that

On the other hand, the inner cap 9, which is vertically movable within the upper part of the outer casing 2, has wear-resistant synthetic resin plates 21 fixed to the outer surface of the four sides. Slides into contact with the inner surface of the wall.

A thick rubber plate 22 is attached to the lower surface of the top plate 9A of the inner cap 9 that covers the vibration crusher body 1, so as to buffer collisions with the vibration crusher body 1.

In addition, on both left and right sides of the square body part 13 of the outer casing 2,
Lugs 23, 2 that serve as the connection to the shovel type excavator
3 is fixed so as to protrude rearward, and an accumulator (not shown) storage section 24 is provided between both lugs 23, 23.

Vibratory crusher A of the present invention having the above-mentioned configuration
The vibration crusher body 1 is inserted into the outer casing 2, the inner cap 9 is placed on the top of the vibration crusher body 1, the donut-shaped rubber 10 is placed on the inner cap 9, and then the lid body 3 is placed on top of the inner cap 9. is attached, and the vibration crusher main body 1 is sealed inside the outer casing 2.

Attach the outer casing 2 with the vibratory crusher main body 1 sealed in this way to the arm of a shovel type excavator, insert the base of the desired chisel 19 into the chisel attachment base 18, and insert the retaining pin (not shown). If you support it so that it does not come off), it is ready for use.

In this state, when the vibration crusher main body 1 is started while pressing the tip of the chisel 19 against the surface of the object to be crushed, for example, concrete, the chisel 19 is violently struck in the axial direction and bites into the object to be crushed. , a crack is generated in the object to be crushed and the object is crushed.

The vibration crusher body 1 vibrates violently up and down upon startup, and at the same time generates a high-pitched metallic sound as it hits the chisel 19. First, the vibration in the vertical direction is received by the rubber plates 17 and 22, and then The inner cap 9 is moved up and down depending on the amplitude.

When the inner cap 9 is raised, the donut-shaped rubber 1
0 is compressed to absorb the vibration of the vibration crusher main body 1 and significantly dampen the vibration transmitted to the outer casing 2.

Furthermore, while soundproofing and vibration absorbing members 16 are attached to the inner wall of the outer casing 2 which has a sealed structure, a gap S is formed between these soundproofing and vibration absorbing members 16 and the vibration crusher main body 1, so that the vibration crusher Noise generated from the main body 1 is propagated while being buffered by the rectangular body part 13 of the outer casing 2, and does not cause the outer casing 2 to resonate.

As a result, the noise transmitted to the outside becomes a loud banging sound with high wavelengths cut out, and experimental results have confirmed that the noise is more than 20 horns lower than that of conventional equipment.

In this embodiment, the donut-shaped rubber 10 is a solid rubber with a circular cross-section, but as shown in the cross-sectional view of FIG. It is okay to have
The rubber 10'' may have a doughnut-like non-circular cross-sectional shape as shown in the cross-sectional view of FIG. 12.

In addition, since the four wear-resistant synthetic resin plates 6 in the square box member 14 are normally worn at a faster rate in the front and rear positions, these plates may be replaced with those in the left and right positions after being used for a predetermined period of time. As a result, the service life can be significantly extended.

As is clear from the above description, the vibration crusher of the present invention can significantly reduce noise propagating to the outside, and in particular, strongly damps vibrations in the axial direction of the vibration crusher main body and transmits them to the outer casing. In addition, the sound-proof and vibration-absorbing layer, which has a strong mutual effect and consists of a sound-proof and vibration-absorbing material attached to the inner surface of the wall of the outer casing and air gaps, greatly attenuates the generated noise. It has an excellent effect in that it can produce a low, loud sound that does not contain any noise, and can be operated without fear of generating noise pollution.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view showing an embodiment of the vibration crusher of the present invention, Fig. 2 is a rear view, Fig. 3 is an enlarged vertical sectional rear view of the upper part with the lid removed, and Fig. 4 is the third
Fig. 5 is an enlarged plan view of the outer casing excluding the lid, Fig. 6 is an enlarged longitudinal sectional rear view of the lower part of the outer casing, Fig. 7 is Fig. 6 - sectional view, Fig. 8 is an enlarged perspective view of the inner cap, Fig. 9 is an enlarged plan view showing an example of donut-shaped rubber, and Fig. 10 is an enlarged perspective view of the inner cap.
The longitudinal front view of the rubber shown in the figure, and FIGS. 11 and 12 are cross-sectional views showing other examples of donut-shaped rubber. In the drawings, A... Vibration crusher of the present invention, 1... Vibration crusher main body, 2... Outer casing, 3... Lid body, 4... Bolt, 5... Nut, 6, 7... Wear resistance. synthetic resin plate, 8...embedded screw, 9...inner cap, 9
A...Top plate, 10, 10', 10''...Rubber, 10
A... Center hole, 10'B... Hole, 11... Guide protrusion, 12... Grip, 13... Square body part, 14... Square box member, 14A... Bottom plate part, 14B... Hole, 15
... Vertical rib, 16 ... Soundproofing and vibration absorption member, 17 ... Rubber plate, 17A ... Hole, 18 ... Chisel mounting cap,
19... chisel, 19A... flange, 20...
Rubber layer, 21... Wear-resistant synthetic resin plate, 22...
Rubber plate, 23...lug, 24...storage section, S...
Gap, a, b...welding.

Claims (1)

[Claims] 1. An outer casing with a chisel insertion hole at the bottom, a vibration crusher main body that can be freely loaded into the outer casing,
a soundproof and vibration absorbing member attached to the inner side of the outer casing wall;
a sound-proof and vibration-absorbing layer consisting of a gap formed between the sound-proof and vibration-absorbing member and the vibration crusher body; an inner cap that is placed over the top of the vibration crusher body inserted into the outer casing; By providing a donut-shaped elastic plastic member inserted between the lid body that closes the upper end opening of the casing and the inner cap, noise generated from the vibration crusher is absorbed within the outer casing. A vibration crusher characterized by being relaxed.