JP4938344B2 - Roll crusher - Google Patents

Description

  The present invention relates to a crusher for crushing waste concrete materials (concrete glass, residual concrete, etc.), debris, slag, and the like, and more particularly, to a roll crusher having a rotor body and movable teeth.

Conventionally, the present applicant has already proposed a roll crusher having a rotor body and movable teeth (see Patent Document 1).
This roll crusher is opposed to the rotor body so that the facing distance between the rotor body with the crushing teeth group attached to the outer periphery and the rotor body on the downward rotating side portion of the rotor body gradually decreases toward the lower side. Movable teeth are provided.
In this case, the waste concrete material to be crushed (hereinafter referred to as “crushed raw material”) is crushed by the action of compression shear between the rotor body and the movable teeth, and the crushed crushed material is removed from the rotor body. It is discharged from the lower end of the movable tooth as it rotates.

In addition, the movable teeth of the roll crusher have a swinging means (hydraulic cylinder) that swings so that the lower side is moved closer to and away from the rotor body with a pivot point formed at the upper end as a center (fulcrum). The crushing material provided between the rotor body and the movable teeth is crushed while being pressed against the rotor body by swinging the movable teeth.
In this way, when the movable tooth is swung, the biting between the crushed tooth and the raw material with less slipping and the unreasonable discharge are repeated, preventing abnormal wear of the crushed tooth and improving the crushing ability. Can be made.

However, conventionally, since the movable tooth swings around the pivoting portion formed at the upper end portion so that the lower side is close to and away from the rotor body, the upper end portion hardly swings (moves), Swings (moves) more toward the side.
When the movable tooth swings (moves) greatly toward the lower side, the gap between the rotor body and the movable tooth greatly expands / contracts every time the movable tooth swings at the lower end of the movable tooth, and is discharged from the lower end of the movable tooth. The particle size of the crushed material was uneven, and the uniform particle size could not be maintained, leaving room for improvement in this respect.

Conventionally, a roll crusher has been known in which a baffle plate is disposed facing the rotor body so that the spacing between the rotor body and the rotor body at the downward rotation side portion of the rotor body gradually decreases toward the lower side. (See Patent Document 2).
In this roll crusher, a baffle plate is attached so as to be swingable, thereby adjusting the degree of opening and closing of the discharge port so as to obtain a desired degree of crushing.
In other words, the baffle plate functions as a fixed plate in the state of use, and has the purpose of swinging to adjust the opening / closing degree of the discharge port, and is also a crushed material having a predetermined particle size or less. This is different from the rooster which drops and discharges through the sieve mesh.
JP 2003-334462 A JP 63-168042 A

  In the present invention, the crushing raw material fed between the rotor body and the movable teeth is pressed against the rotor body to assist crushing so that the crushing raw material can be surely broken. It is an object of the present invention to provide a roll crusher that prevents clogging and stays and further maintains the uniform particle size without unevenness in the particle size of the crushed material discharged from the lower end of the movable tooth. .

In order to solve the above problems, the roll crusher of the present invention (Claim 1)
A rotor body with a group of crushed teeth on the outer periphery;
In the downward rotating side portion of the rotor body, provided with movable teeth disposed so as to face the rotor body so that the interval between the rotor body and the rotor body gradually decreases toward the lower side,
The movable tooth is provided with a swinging means for swinging so that the upper side is moved closer to and away from the rotor body with the pivoting portion formed at the lower end as a center.
The rooster is arranged below the rotor body in a state of being continuous with the lower end of the movable tooth, and the crushed material having a predetermined particle size or less passes through the mesh of the rooster and is discharged and discharged. .

The roll crusher of the present invention (Claim 2)
The swinging means is an eccentric shaft that contacts the back surface of the movable tooth, and the drive system of the eccentric shaft is connected to the drive system of the rotor body.

The roll crusher of the present invention (Claim 3)
The roll crusher according to claim 1 or 2, wherein the movable teeth are formed as a rooster that allows a crushed material having a predetermined particle diameter or less to pass through and fall and discharge.

The roll crusher of the present invention (Claim 4)
4. The roll crusher according to claim 1, 2 or 3, wherein a base end portion of the rooster is pivotally supported in common with a pivotal support portion of a movable tooth, and a closed position facing the lower surface portion of the rotor body, and the pivotal support. It was set as the structure formed so that opening and closing is possible between the open position rotated below as a center.

  The roll crusher according to the present invention (Claim 5) is the roll crusher according to Claim 1 or 2 or 3, wherein the rooster is a forward position facing the lower surface portion of the rotor body, and the axis from the forward position is a shaft. The structure is formed so as to be movable between a receding position that moves in a perpendicular direction and is separated from the lower surface of the rotor body.

In the present invention (Claim 1), the movable teeth can be swung so as to approach and separate from the rotor body by the swinging means.
By this swinging of the movable teeth, the crushed raw material is sent between the rotor body and the movable teeth, and the crushed raw material is pressed against the rotor main body. By this pressing, the crushed raw material can be reliably crushed by an action such as compression shearing. .
Further, since the movable teeth are arranged so that the distance between the rotor teeth and the rotor body is gradually narrowed toward the lower side, crushing raw materials may clog and stay in the meantime. It can be solved by the swinging of the movable teeth, and troubles such as retention of crushed raw materials can be prevented.

In particular, the movable tooth oscillates so that the upper side is close to and away from the rotor body with the pivoting portion formed at the lower end as the center.
In this way, when the pivoting portion is formed at the lower end, the upper side swings (moves) greatly, but the lower end hardly swings (moves) when swinging, so that the lower end is movable with the rotor body. The gap with the teeth hardly changes.
Therefore, the particle size of the crushed material discharged from the lower end of the movable tooth is made uniform, and a stable and uniform particle size without unevenness can be maintained.

In addition, since the rooster is disposed below the rotor body in a state of being continuous with the lower end of the movable tooth, the crushed material discharged from the lower end of the movable tooth passes through the sieve mesh of the rooster and is dropped and discharged. .
In this case, as described above, since the lower end of the movable tooth hardly swings (moves), the rooster can be smoothly continued to the lower end of the movable tooth.
In the case where the lower end of the movable tooth is largely swung (moved) as in the prior art, when the rooster is connected to the lower end of the movable tooth, a step is generated between the rooster and the step when the movable tooth swings. Variation occurs. For this reason, the movable tooth and the rooster are not smoothly connected, and crushed material accumulates or clogs at the level difference, causing trouble.

  In the present invention, since the lower end of the movable tooth hardly oscillates (moves), the rooster can be smoothly connected to the lower end of the movable tooth. In other words, the lower end of the movable tooth is not oscillated (moved). Since it has been configured, it is possible to dispose the rooster, so that only products that pass through the sieve of the rooster can be collected as products, and products with the desired particle size or less are reliably produced. be able to.

In the roll crusher of the present invention (Claim 2), an eccentric shaft is used as the swinging means, and the drive system of the eccentric shaft is connected to the drive system of the rotor body.
Therefore, the drive source for the rotor body and the drive source for the eccentric shaft can be shared, and the drive system can be simplified and the cost can be reduced.

When the movable tooth is formed as a rooster (Claim 3), crushed material having a predetermined particle size or less can be dropped and discharged through the movable tooth.
Thereby, the quantity of the crushing raw material sent between a rotor main body and movable teeth increases, the whole processing amount of a crushing raw material can be increased, and work efficiency can be improved.

  Further, when the rooster is formed so as to be openable and closable between the closed position and the open position (claim 4), impurities can be removed or inspected in a state of being opened to the lower position.

  Further, when the rooster is formed so as to be movable between the forward movement position and the backward movement position (Claim 5), the backward movement position is a position away from the rotor body, so that impurities can be removed or inspected, It is possible to easily perform work when changing to a new rooster.

  FIG. 1 is a side view showing a roll crusher according to a first embodiment of the present invention, and FIG. 2 is a plan view showing the roll crusher.

  In the figure, reference numeral 9 denotes a base, and a square cylindrical frame 90 is provided on the base 9, and in this rectangular cylindrical frame 90, the rotor main body 1, the movable teeth 2, and the rooster 3, which are main components of the present embodiment. Is arranged.

The rotor body 1 is attached to a rotor shaft 10 that is horizontally supported in the cylindrical frame 90, and a crushing tooth group 11 is fixed to the outer periphery thereof.
Since the basic configuration of the rotor body 1 having the pulverized teeth group 11 is described in detail in Japanese Patent Application Laid-Open No. 11-319596, the detailed description thereof is omitted.
The rotor body 1 rotates in the direction of arrow A using a motor 40 provided on the base 9 as a drive source, and the drive system 4 transmits the power of the motor 40 to a speed reducer 42 by a drive belt 41. It is formed in a power transmission structure that is transmitted from the machine 42 to the rotor shaft 10 by the chain 43.

The movable teeth 2 are opposed to the rotor body 1 so that the spacing between the rotor body 1 and the rotor body 1 at the downward rotation side portion (the left side portion of the rotor body 1 in the illustrated example) gradually decreases toward the lower side. Arranged.
The movable tooth 2 has a large number of vertical plates 20 each having a concave arc surface facing the rotor body 1, and a plurality of horizontal rails 21 extending horizontally on the concave arc surface of the vertical plate 20. And is formed.

In this case, by forming the gap between the vertical plates 20 and the gap between the horizontal rails 21 with a sieve having the same size as the rooster 3 described later, the crushed material having a predetermined particle size or less is allowed to pass through the movable teeth 2. It can be formed so as to have a function as a rooster for dropping and discharging.
In the embodiment, the horizontal beam 21 is provided on the concave arc surface of the vertical plate 20 so that the horizontal beam 21 is close to the rotor main body 1, but the vertical plate 20 is provided on the horizontal beam 21 and the vertical plate 20 is You may form so that it may become close to the rotor main body 1. FIG.
Moreover, you may use what connected the many vertical board 20 in parallel, without providing the crosspiece 21. FIG.

The movable tooth 2 is pivotally attached at its lower end by a support shaft 22, and is provided with a swinging means for swinging the upper side of the support shaft 22 so as to approach and separate from the rotor body 1.
An eccentric shaft 5 that abuts the back surface of the movable tooth 2 via a roller 51 is used as the swinging means.
The eccentric shaft 5 is formed on a rotating shaft 50 that is horizontally supported in the cylindrical frame 90, and the drive system 6 is formed in a power transmission structure that transmits the rotating shaft 50 from the rotor shaft 10 to the rotating shaft 50. Has been.
Thus, the drive system 6 of the eccentric shaft 5 is connected to the drive system 4 of the rotor body 1, and the drive source (motor 40) of the rotor body 1 and the drive source (motor 40) of the eccentric shaft 5 are common. Therefore, the drive systems 4 and 6 can be simplified and the cost can be reduced.

Note that belts, chains, gears, and the like can be used as appropriate as the power transmission means of the drive systems 4 and 6.
In this embodiment, the eccentric shaft 5 is used as the swinging means. However, other than this, a cam, a link mechanism, a crank mechanism, a hydraulic cylinder, or the like can be used as the swinging means.

Accordingly, when the motor 40 is driven, the rotor body 1 is rotated by the drive system 4 and the eccentric shaft 5 is rotated by the drive system 6 at the same time, so that the movable tooth 2 is centered on the lower support shaft 22 in FIG. It swings between the solid line position and the virtual line position.
Note that the movable tooth 2 is normally urged by a tension spring 7 so that the back surface thereof is in contact with the eccentric shaft 5.

The rotational speed of the rotor body 1 and the rotational speed of the eccentric shaft 5 can be changed by a variable speed device such as an inverter.
At this time, the crushing load is detected. When the crushing load is light, the rotational speed of the rotor body 1 and the eccentric shaft 5 is increased. When the crushing load is heavy, the rotor body 1 and the eccentric shaft 5 are It can be controlled to slow down the rotational speed.

The rooster 3 is disposed below the rotor body 1 in a state of being continuous with the lower end of the movable tooth 2.
In this rooster 3, a mesh-like sieve mesh is formed by a vertical member 30 whose surface facing the rotor body 1 is formed in a concave arc shape, and a horizontal member 31 that extends and is attached to the upper surface of the vertical member 30 in the horizontal direction. Has been.
The base end portion (left end portion in the illustrated example) of the rooster 3 is pivotally supported by using a support shaft 22 that supports the lower end of the movable tooth 2 as a common support shaft 22 and always faces the lower surface portion of the rotor body 1. It is supported at the position (the line position in FIG. 1), and can be opened to the lower position (the phantom line position in FIG. 1) around the support shaft 22 when impurities are removed or inspected.

Therefore, when the crushed raw material is introduced between the rotor body 1 and the movable tooth 2, the crushed raw material is fed between the rotor body 1 and the movable tooth 2 as the rotor body 1 rotates, and compression shearing or the like is performed between them. The crushed material that has been crushed by the above action is discharged from the lower end of the movable tooth 2 as the rotor body 1 rotates.
At this time, the crushing raw material fed between the rotor body 1 and the movable tooth 2 is pressed against the rotor body 1 by the swinging movement of the movable tooth 2, and is reliably crushed because it is subjected to actions such as compression shear in this pressed state. Can do.

Further, the movable tooth 2 is provided with a horizontal rail 21, and the movement of the crushing raw material can be regulated by the horizontal rail 21, so that the crushing raw material can be pressed firmly.
In the embodiment, a round bar is used as the horizontal bar 21. However, if a bar having a sharp upper surface is used, the horizontal bar 21 bites into the crushed raw material and more reliably regulates the movement of the crushed raw material. be able to.

  Further, even if the crushed material is clogged and stays between the rotor body 1 and the movable tooth 2, the clogging can be released by the swinging of the movable tooth 2, and troubles such as stagnation of the crushed material can be prevented.

When the movable tooth 2 swings, the lower end portion hardly swings (moves), so that the gap between the rotor body 1 and the movable tooth 2 hardly changes at the lower end portion.
Therefore, the particle size of the crushed material discharged from the lower end of the movable tooth 2 is made uniform, and a stable and uniform particle size without unevenness can be maintained.

Further, since the lower end of the movable tooth 2 hardly swings (moves) in this way, the rooster 3 can be smoothly continued to the lower end of the movable tooth 2.
Accordingly, the crushed material discharged from the lower end of the movable tooth 2 is smoothly transferred from the movable tooth 2 to the rooster 3 and passes through the sieve mesh of the rooster 3 to be dropped and discharged. Only the product that has passed through the sieve mesh can be collected as a product, and a product having a target particle size or less can be reliably produced.

Next, FIG. 3 is a side view showing the roll crusher of the second embodiment of the present invention.
The roll crusher includes a forward position where the rooster 3 faces the lower surface of the rotor body 1 (solid line position in FIG. 3), and a retracted position where the rooster 3 moves away from the lower surface of the rotor body 1 by moving in the direction perpendicular to the axis. It is formed so as to be movable between (the phantom line position in FIG. 3).
In this case, cradles 35 are provided at both ends of the rooster 3, and the cradle 35 is moved from the forward position supported by the guide plate 36 to the retracted position by sliding on the roller 37.
In addition, the other structure is the same as that of the roll crusher of the said 1st Example, and makes the code | symbol same in drawing.

  As described above, when the rooster 3 is moved from the forward position to the backward position, the backward position is a position away from the rotor body 1, so that impurities can be removed or inspected, or replaced with a new rooster. Work can be done easily.

  The roll crusher of this example is mainly used as a single crushing device, but it is disposed below a roll crusher that inputs crushing raw material between a pair of left and right rotor bodies and performs primary crushing, It can also be used as a secondary crushing device that crushes the crushed material discharged from the roll crusher.

It is a side view which shows the roll crusher of 1st Example of this invention. It is a top view which shows the roll crusher. It is a side view which shows the roll crusher of 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotor main body 10 Rotor axis | shaft 11 Crushing tooth group 2 Movable tooth | gear 20 Repulsive surface 21 Horizontal rail 22 Support shaft 3 Rooster 30 Vertical material 31 Horizontal material 35 Base 36 Guide plate 37 Roller 4 Drive system 40 Motor 41 Drive belt 42 Reduction gear 43 Chain 5 Eccentric shaft 50 Rotating shaft 6 Drive system 60 Chain 7 Tension spring 9 Base 90 Cylindrical frame

Claims (5)

A rotor body with a group of crushed teeth on the outer periphery;
In the downward rotating side portion of the rotor body, provided with movable teeth disposed so as to face the rotor body so that the interval between the rotor body and the rotor body gradually decreases toward the lower side,
The movable tooth is provided with a swinging means for swinging so that the upper side is moved closer to and away from the rotor body with the pivoting portion formed at the lower end as a center.
A rooster is disposed below the rotor body in a state of being continuous with the lower end of the movable tooth, and a crushed material having a predetermined particle size or less passes through the sieve mesh of the rooster and drops and discharges. Roll crusher.   The roll crusher according to claim 1, wherein the swinging means is an eccentric shaft that contacts the back surface of the movable tooth, and a drive system of the eccentric shaft is connected to a drive system of the rotor body.   The roll crusher according to claim 1 or 2, wherein the movable tooth is formed as a rooster that allows a crushed material having a predetermined particle size or less to pass through to drop.   The base end portion of the rooster is pivotally supported in common with the shaft support portion of the movable tooth, and opens and closes between a closed position facing the lower surface portion of the rotor body and an open position rotated downward about the shaft support. The roll crusher of Claim 1 or 2 or 3 currently formed.   The rooster is formed to be movable between a forward position facing the lower surface portion of the rotor body and a backward position moved from the forward position in a direction perpendicular to the axis and separated from the lower surface portion of the rotor body. The roll crusher of 1 or 2 or 3.

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