JPH09220489A - Hopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower impact noise at the time of charging solid materials into a hopper, to improve a working environment and to lessen the nuisance to neighborhood by composing the hopper of a hollow structure and packing a soundproof material into the hollow parts. SOLUTION: The movable hopper 19 is constituted by a double structure formed with the hollow parts between an inner plate material 20 and outer plate material 21 made of steel plates. The stationary hopper 18 is also composed of the hollow structure hermetically closed by the inner plate material 22 and the outer plate material 23 in common use as the guide surface of the movable hopper 19 and a bottom pleat 24. The soundproof material consisting of liquid 26 is packed into these hollow parts. The vibration generated by collision of the charged material against the inner plate materials 20, 22 is damped and attenuated by the liquid 26. While the generated vibration passes the liquid 36, the vibration is partly absorbed and propagates to the outer plate materials 21, 23 and propagates to the outer space from the outer plate materials 21, 23. The level thereof is thus lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hopper, and more particularly to noise caused by collision of solid matter with a hopper when a stone such as quarry, crushed stone, ore, or solid matter such as coal, concrete lump, wood or the like is charged. The present invention relates to a hopper having a structure in which is effectively reduced.

[0002]

2. Description of the Related Art For example, a crusher for crushing concrete, asphalt, crushed stone or the like for reuse, is a crushing unit consisting of a crushing roll with a jaw crusher or a cutter for crushing an object to be crushed that is received from a hopper provided on the upper surface of the machine. And the crushed scraps crushed in the crushing section are carried out to the outside of the machine body from a conveyor attached to the lower part of the machine body. The conventional hopper used for such a crusher has a structure in which ribs are welded to the back surface of a steel plate formed in a cone shape.

[0003]

However, in the conventional hopper, when the object to be crushed is crushed stone, concrete lump, etc., when the object to be crushed is put into the hopper by a hydraulic excavator, a loader or the like, There was a problem that the impact sound when the crushed object dropped into the hopper was large, which deteriorated the working environment and became a noise source and annoyed the neighborhood.

In view of the above-mentioned problems, the present invention provides a hopper capable of reducing impact noise when a solid material is put into the hopper, improving the working environment, and reducing annoyance to the neighborhood. The purpose is to

[0005]

In order to achieve the above object, the present invention is characterized in that the hopper has a hollow structure and the hollow portion is filled with a soundproof material (claim 1). Further, the present invention is characterized in that the hopper is made of a damping alloy (claim 2). When the hopper is made of damping alloy,
More preferably, the hopper has a hollow structure, and at least the inner plate member for receiving the input is a damping alloy among the plate members constituting the hopper (Claim 3), and more preferably, the hollow portion is filled with a soundproof material (Claim 3). Item 4).

As the soundproofing material, generally used foaming material, glass wool, wood, etc. are used, and liquid (claim 5), water (claim 6), sand, earth or filling and hardening is used. Concrete or mortar (claim 7) is also used.

[0007]

According to the first aspect of the present invention, the vibration generated by the collision of the input material with the inner plate material when the material is charged into the hopper is damped or generated by the soundproof material filled between the inner and outer plate materials. The vibration is absorbed while passing through the soundproofing material, propagates to the outer plate material, and propagates from the outer plate material to the external space, so that the sound that directly propagates to the external space is reduced. When a damping alloy is used for the hopper as in claim 2, the vibration itself of the hopper, which becomes a sound wave, is reduced. When the hopper has a hollow structure and at least the inner plate member is made of a damping alloy as claimed in claim 3, the noise generated by the damping action is caused by the collision of the input material to the hopper with the damping alloy. And the sound level of the outer plate material reduces the sound wave level directly propagating to the external space. . When the hollow portion is filled with the soundproof material, the sound level is further reduced.

According to claims 5 to 7, water is used as a soundproof material,
When a liquid such as oil, sand, soil, concrete, or mortar is used, the gap is filled with the soundproof material by dropping or flowing from the upper part to the hollow part. When a liquid is used, it can be pressed into the hollow portion from below.

[0009]

1 and 2 are partially cutaway side views and plan views showing a case where an embodiment of a hopper of the present invention is used in a crusher, and FIG. 3 is a partially enlarged sectional view of FIG. Is. The crusher of the present embodiment has a vehicle body 1 of a self-propelled vehicle having left and right crawlers, in which an upper primary crushing section 3 and a lower secondary crushing section 4 are mounted, and left and right crawlers 2,
A conveyor 5 for discharging crushed waste is provided between the two, and the conveyor 5
A magnetic separator 6 for separating rebar scraps using a magnet is provided at the tip of the crusher to construct a crusher. The magnetic separator 6 is a conveyor arranged above the conveyor 5 so as to traverse,
It consists of a magnet that sucks up and separates the reinforcing bar scrap from the crushed scrap. Reference numeral 7 denotes a hopper for receiving the crushed object, which is installed on the primary crushing unit 3.

The primary and secondary crushing units 3 and 4 are provided with an even number of crushing rolls 10 and 11 each having a cutter 14, and each crushing roll 10 and 11 is an independent hydraulic motor for each crushing roll. It is rotated by 12, 13.

The hopper 7 of this embodiment is constructed so as to be raised and lowered by a hydraulic cylinder 17 in order to reduce the total height during transportation. That is, as shown in FIGS. 1 and 2, the frame 15 of the primary crushing section 3 has a rectangular tubular shape and is installed so as to project upward from the vehicle body 1.
A rectangular fixed hopper 18 is fixed on the upper side, and the fixed hopper 18 is fixed.
The movable hopper 19 is fitted to the outer peripheral portion of the so as to be able to move up and down. And when working, extend the hydraulic cylinder 17 as shown in the figure,
The movable hopper 19 is fixed to the fixed hopper 18 by a pin (not shown), and the pin is pulled out during transportation to remove the hydraulic cylinder 17
Is contracted to lower the movable hopper 19, and the total height including the trailer is kept within the transportation limit height for transportation.

In this embodiment, as shown in FIG. 3 in an enlarged manner, the movable hopper 19 is constructed and fixed by a double structure in which a hollow portion is formed between an inner plate member 20 and an outer plate member 21 made of steel plates. The hopper 18 also has an inner plate member 22 and a movable hopper 19.
The outer plate member 23 also serving as the guide surface and the bottom plate 24 are hermetically sealed. And liquid 2 in these hollows
6 is filled with a soundproof material.

As described above, when the hopper is made hollow and filled with the soundproof material such as the liquid 26, the vibration caused by the collision of the input material with the inner plate members 20 and 22 causes the liquid filled between the inner and outer plate members. It is damped and damped by the soundproof material 26. Further, the generated vibration is partially absorbed while passing through the soundproof material made of the liquid 26, propagates to the outer side plate materials 21, 23, and propagates from the outer side plate materials 21, 23 to the external space.
The level of sound propagating directly to the external space is reduced.

If the liquid 26 is used as a soundproof material,
For example, the liquid 26 is injected through a hole 27 (28 is a lid that closes the hole 27) provided at the top of the movable hopper 19, or a hole 29 (30 is a lid that closes the hole 29) at the bottom of the fixed hopper 18. There is an advantage that the soundproof material can be filled from any place such as by press-fitting a liquid from the above, and the work of filling the soundproof material becomes easy. The liquid 26 used as a soundproof material is rustproof,
Although oil may be used, use of water is advantageous in that it is convenient and inexpensive.

When water is used as the liquid soundproofing material 26, as shown in FIG. 4, for example, water from a tap or a water pump is injected into the fixed hopper 18 by a hose 31.
By ejecting the water through the fountain holes 32 provided in the inner plate member 22, it is possible to use water as a soundproof material as dustproof water for preventing scattering of dust generated by crushing.

FIG. 5 shows another embodiment of the present invention in which the movable hopper 19 and the fixed hopper 18 are filled with sand 33. If such a granular material such as sand is used, injection into the hollow portion can be easily performed, vibration damping and sound absorbing effects can be obtained, and high soundproofing effect can be obtained. Soil can be used as the granular material, and the liquid such as water may be mixed with the soil or sand to enhance the fluidity to facilitate the injection. Further, in order to facilitate the injection of these soundproofing materials, it is sufficient to have fluidity at the time of injection, and concrete or mortar which is hardened after filling may be used.

FIG. 6 shows another embodiment of the present invention, which is a hopper 7A in which the inside is made hollow by the inside plate member 34 and the outside plate member 35.
The hopper 7A is non-detachably or removably mounted on the primary crushing section frame 15, and the glass wool 36 is filled in the hollow portion. Is obtained. Other than the above, as the soundproof material, foam material, wood, wood chips, or the like can be used, and these soundproof materials can also be used in the lifting hopper.

FIG. 7 shows a hopper 7B having a hollow interior made up of an inner plate member 37 and an outer plate member 38 made of a damping alloy. According to this embodiment, an input material collides with the inner plate member 37. The vibration generated at that time is immediately attenuated by the original action of the damping alloy, so that a soundproofing effect can be obtained. Further, even if the outer plate member 38 is not provided, the soundproof effect due to the vibration damping effect can be obtained. However, by providing the outer plate member 38, the sound generated by the inner plate member 37 is blocked by the outer plate member 38, and the soundproof effect is obtained. Increase. Further, the sound insulation effect of the outer plate member 38 can be obtained even when the outer plate member 38 is a general steel plate that is not a damping alloy. Further, by filling the liquid 26, sand 33, glass wool 36, etc. shown in each of the above-described embodiments into the hopper 7B made of these vibration damping alloys, the vibration damping effect and the sound absorbing action are further enhanced, and a further excellent soundproofing effect is obtained. Is obtained.

FIG. 8 shows an example in which the present invention is applied to the hopper 40 of the feeder 39 for feeding the object to be crushed from above the primary crushing section 3 rather than from the side thereof in a constant amount. In the feeder 39, the surface 40a of the rectangular hopper 40 on the primary crushing section 3 side is open, and the roller 42 is installed on the feeder frame 41 integrated with the hopper 40. The reciprocating frame 43 provided at the bottom of the reciprocating frame is placed on the roller 42, and the hydraulic cylinder 44 is provided between the feeder frame 41 and the reciprocating frame 43. 43 is moved forwards and backwards with respect to the primary crushing unit 3, and the crushed material on the hopper 40 and the reciprocating frame 43 is moved to the primary crushing unit 3
To supply. That is, when the reciprocating frame 43 moves forward with respect to the primary crushing unit 3, the crushed object rides on the reciprocating frame 43 and moves forward, and when the reciprocating frame 43 moves backward, the crushable object catches on the wall surface 40b of the hopper 40 on the anti-crushing unit side. The object to be crushed on the reciprocating frame 43 falls from the tip 43a of the reciprocating frame 43 to the primary crushing section 3. In the present embodiment, the lifting frame 4
5, the feeder frame 41 is mounted on the lifting frame 45, and the lifting hydraulic cylinder 46 is installed on the lifting frame 45.
By lowering 9, the hopper 40 is made to fit within the transportation limit height.

Also in the hopper 40 of such a feeder 39, the soundproofing effect is obtained by forming the hopper 40 into a hollow structure and filling the hollow part with the soundproofing material 26 such as the liquid described above in each of the embodiments. can get.

The present invention can be applied not only to a hopper used for a crusher, but also to a hopper for unloading ore, coal or the like at a port, or a hopper mounted on a truck for carrying these. Particularly in a truck for transportation, a rubber sheet is laid on the inner surface of the hopper for soundproofing, the life of the rubber sheet is short, and frequent replacement is required.However, by using the hopper structure of the present invention, It is possible to provide a hopper that can be used and has reduced noise.

In the present invention, when a non-fluid material such as wood is used as the soundproof material, the hollow portion of the hopper does not have to be a closed hollow portion. Also,
A structure in which ribs are provided between the inner and outer plate materials may be used.

[0023]

According to the first aspect of the present invention, since the hopper has a hollow structure and the hollow portion is filled with the soundproof material, the soundproof material suppresses vibration and / or absorbs sound, and the outer plate material absorbs sound.
A soundproof effect is obtained, the working environment is improved, and annoyance due to noise in the neighborhood can be reduced.

According to the second aspect, since the hopper is made of the damping alloy, the vibration level of the hopper is reduced by the damping effect, and the soundproof effect is obtained. According to the third aspect, the hopper has a hollow structure, and at least the inner plate member for receiving the input material of the hopper is made of the damping alloy.
In addition to the soundproofing effect by the vibration control effect in, the soundproofing effect is enhanced by the soundproofing effect by the outer plate material. According to the fourth aspect, in addition to the effect of the third aspect, the damping or sound absorbing action of the soundproof material is further added, and the soundproofing effect is further enhanced.

According to the fifth aspect, since the soundproof material is a liquid, it is easy to fill the hollow portion with the soundproof material. According to claim 6, since the soundproof material is water, the soundproof material is inexpensive and easily available, and when used as a hopper of a crusher, the water as the soundproof material is used as dustproof water. Will also be possible. According to the seventh aspect, since the soundproof material is sand, soil, or concrete or mortar in which the hollow portion is filled and hardened, it is easy to fill the hollow portion with the soundproof material. In particular, when sand is used as the soundproof material, a high soundproofing effect is obtained due to the high vibration damping and sound absorbing effects.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a case where an embodiment of a hopper of the present invention is used in a crusher.

FIG. 2 is a plan view of FIG.

FIG. 3 is a partially enlarged sectional view of FIG. 1;

FIG. 4 is a cross-sectional view corresponding to FIG. 3 showing another embodiment of the present invention.

FIG. 5 is a cross-sectional view corresponding to FIG. 3 showing another embodiment of the present invention.

FIG. 6 is a sectional view corresponding to FIG. 3 showing another embodiment of the present invention.

FIG. 7 is a sectional view corresponding to FIG. 3, showing another embodiment of the present invention.

FIG. 8 is a sectional view showing an example in which the present invention is applied to a feeder hopper of a crusher.

[Explanation of symbols]

1: Car body, 2: Crawler, 3: Primary crushing section, 4: Secondary crushing section, 5: Conveyor, 6: Magnetic separator, 7, 7A, 7B: Hopper, 10, 11: Crushing roll, 12, 13: Hydraulic pressure Motor, 14: Cutter, 15: Frame of primary crushing section, 17:
Hydraulic cylinder for lifting hopper, 18: fixed hopper, 19:
Movable hopper, 20, 22: inner plate material, 21, 23: outer plate material, 24: bottom plate, 26: liquid, 33: sand, 36: glass wool, 39: feeder, 40: hopper

Claims (7)

[Claims] 1. A hopper characterized in that the hopper has a hollow structure and the hollow portion is filled with a soundproof material. 2. A hopper characterized in that the hopper is made of a damping alloy. 3. A hopper characterized in that the hopper has a hollow structure, and at least an inner plate material of the hopper for receiving an input is made of a damping alloy. 4. The hopper according to claim 3, wherein the hollow part of the hopper is filled with a soundproof material. 5. The hopper according to claim 1 or 4, wherein the soundproof material is a liquid. 6. The hopper according to claim 5, wherein the soundproof material is water. 7. The hopper according to claim 1 or 4, wherein the soundproof material is sand, soil, or concrete or mortar in which a hollow portion is filled and hardened.