JPH1133422A - Crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set crushing granule size of material to be treated without changing distances between roll axes of crushing rolls. SOLUTION: The crusher has a combination of a fixed roll 5b and rotating rolls 5a, 5c. Each roll has crushing teeth on the periphery thereof, and the rotating roll 5a (5c) undergoes rotary driving in one direction, and the fixed roll 5b is fixed at its regular position. The fixed roll 5 is arranged in the center and the rotating rolls 5a, 5c are arranged on both sides of the fixed roll 5b. The fixed roll 5b has three kinds of classes of crushing teeth having different height (a first class A, a second class B, a third class C), and the height of crushing teeth of the rotating roll 5b is fixed. The dividing angles of crushing teeth of the first class A, the second class B, and the third class C are set, and between the crushing teeth of any one class of the first to third classes A-C of the fixed roll 5b and the crushing teeth of the rotating rolls 5a, 5c, material to be treated is crushed, and its granule size is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher for crushing a lump generated when a building, a house, a road or other structures are dismantled or destroyed.

[0002]

2. Description of the Related Art As a crusher for crushing a lump formed by dismantling or destruction of a structure into fine particles, the crusher has conventionally been a jaw crusher by a compression crushing system and an impact crusher by an impact crushing system. Alternatively, a cone crusher using a compression method is known. Recently, however, a crusher using a set of rotating rolls, which can be called a rotary crushing method, has been developed. This crusher uses a rotating roll having crushing teeth mounted on its periphery, and arranges a pair of rotating rolls in parallel to rotate inward with each other. Can be pulverized into fine particles by chewing between the rotating crushing teeth.

[0003] Further, a set of rotating rolls is arranged in two upper and lower stages, and an upper set of rotating rolls is used for primary crushing, and a lower set of rotating rolls is used for secondary crushing to reduce coarse concrete blocks to fine particles. Can be easily crushed.

The primary crushing process is a process of crushing a coarse lump into fragments of a size that can be crushed by secondary crushing. In the secondary crushing process, the primary crushed fragments are finely divided as necessary. This is a process of crushing up to. Primary crushing treatment,
When crushing is performed by rotating a pair of rolls of the same diameter and length at the same speed in the secondary crushing, a difference occurs in the processing capacity between the primary crushing and the secondary crushing. If the input amount of the object to be processed is wrong because it exceeds the secondary crushing processing capacity, the fragments that have been subjected to the primary crushing process will accumulate between the set of the primary crushing rolls and the pair of the secondary crushing rolls. There is a problem that a bridge is formed and so-called clogging occurs. However, this problem can be solved by increasing the throughput of the secondary crushing process. FIG. 8 shows a set of two rotating rolls 21 for the primary crushing process and four sets for the secondary crushing process.
This is an example in which a set of rotating rolls 22 is used, and sets of the respective rolls are combined in upper and lower tiers.

[0005] According to this example, the fragments crushed between the pair of upper rotating rolls 21 and 21 are crushed between the lower pair of rotating rolls 22 and 22 and 22 and 22.
As compared with the case where one set of rotating rolls is used in the lower stage, twice the processing capacity can be obtained. However, in order to use two sets of rotating rolls in the secondary crushing process and drive each rotating roll, the number of parts including the drive system of the rolls increases,
There is a problem that the structure becomes complicated and the device becomes large.

[0006] In order to solve this problem, the inventors used a set of three rolls each having crushing teeth on the circumference, fixed the center roll, and fixed the rolls on both sides for the secondary crushing treatment. A rotary driven crusher was developed. According to this method, when the object to be treated after the primary crushing is dropped between the pair of central fixed rolls and the one side rotating roll and between the central fixed roll and the other side rotating roll, the object to be treated is It can be crushed by the crushing teeth of each roll. Therefore, according to this method, the ability of the crushing treatment can be increased by using a total of three rolls, one fixed roll and two rotating rolls.

[0007]

Further, in a crusher having a set of rotating rolls as shown in FIG. 8, when setting the crushing particle size of the object to be processed, it is performed by changing the distance between the axes of the rotating rolls. However, the work of moving the bearing of the rotating roll, adjusting the distance between the shafts, and fixing the bearing again is not only because of the heavy weight of the roll, but also because it is an adjustment work that also includes the drive device for the rotating roll. This is a very labor-intensive task.

An object of the present invention is to provide a crusher which uses a combination of a fixed roll and a rotating roll and which can adjust the crushing particle size while keeping the center distance between the rolls constant.

[0009]

In order to achieve the above object, a crusher according to the present invention is a crusher having a set of a fixed roll and a rotating roll, wherein each roll has crush teeth on its circumference. Has a rotating roll at the time of crushing the workpiece,
The fixed roll is driven to rotate in one direction, the fixed roll is fixed at a fixed position, and the crushing teeth are teeth for chewing and breaking the workpiece put between adjacent rolls, and the crushing teeth of the fixed roll facing the crushing teeth of the rotating roll. The tooth height of the crushing teeth is changed according to the size of the particle size of the crushing treatment of the object.

Further, the fixed roll has several types of crushing teeth with different heights on the circumference, the rotation angle is changed, and the crushing teeth of the selected specific height are fixed facing the rotating roll. Things.

A crusher having a set of one fixed roll and two rotating rolls, wherein the fixed roll is arranged in the center and the rotating rolls are arranged in parallel on both sides of the fixed roll,
The crushing teeth of the fixed roll meshed with the crushing teeth of each rotating roll are of the same height.

Further, the fixed roll has two crushing teeth of the same type, and each of the two crushing teeth of the same type is mounted on the circumference of the rotating roll at a central angle of 180 °. Is what it is.

[0013] The height of the teeth of the crushing teeth mounted on the circumference of the fixed roll is determined by the thickness of the shim interposed between the roll and the crushing teeth.

Further, the fixed roll is capable of adjusting the turning angle, and the crushing teeth of the selected specific height are fixed to the indexing angle facing the rotating roll.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a crusher according to the present invention will be described below with reference to the drawings. 1 to 3, a crushing machine 1 is roughly divided into a machine frame 2, a hopper 3, a crushing roll (primary crushing roll) 4 for a primary crushing process, and a crushing device for a secondary crushing process. It has a set of rolls (referred to as secondary crushing rolls) 5 and a conveyor 6.

The machine frame 2 is separated into an upper frame 7 and a lower frame 8,
A set 4 of primary crushing rolls and a set 5 of secondary crushing rolls are assembled to the upper frame 7, and the hopper 3 is mounted on the upper frame 7. The lower frame 8 is a base for supporting the upper frame 7, and the conveyor 6 is inserted therein. The hopper 3 is for charging an object to be crushed, such as a lump of concrete, and introducing it into a set 4 of primary crushing rolls.

FIG. 4 shows a combination example of the primary crushing roll set 4 and the secondary crushing roll set 5. Primary crushing roll set 4
And a set 5 of secondary crushing rolls is a set of rolls having crushing teeth (crushing teeth 11 of primary crushing rolls, crushing teeth 12 of secondary crushing rolls) on the circumference, and crushing teeth 11, 12 These teeth are used to chew the object to be processed supplied oppositely. FIG.
In the figure, the shape of the crushed tooth is not shown.

The primary crushing roll set 4 is composed of two rotating rolls 4a and 4b arranged in parallel. Each roll rotates toward another pair of rolls, and rolls 4a and 4b.
The workpiece supplied in the middle is crushed, and the fragments are dropped onto a set 5 of secondary crushing rolls.

The set of secondary crushing rolls 5 is composed of three rolls 5a, 5b, 5c arranged in parallel, and their respective axes are aligned with respect to the axes of the respective rolls of the set 4 of primary crushing rolls. It is arranged right below the primary crushing roll set 4 so as to be orthogonal. Of the three rolls 5a, 5b, 5c, the center roll 5b is fixed, and the rolls 5a, 5 on both sides are fixed.
c are rotationally driven inward toward the center roll 5b in opposite directions. Rotating rolls 4a, 4 for primary crushing
b is rotated by a motor 9, and the rolls 5 a and 5 c on both sides for secondary crushing are each driven by a motor 10. The hydraulic motor is not limited to the electric motor that drives each roll, and may be a hydraulic motor.

Hereinafter, the center roll 5b used for secondary crushing is fixed and the rolls 5a and 5c on both sides are rotating rolls to distinguish them. The objects to be processed after the primary crushing that have fallen from the primary crushing roll set 4 are crushed teeth 12 of a fixed roll 5b and one rotating roll 5a that form a pair.
12 and between the crushing teeth 12 of the fixed roll 5b and the crushing teeth 12 of the other rotating roll 5c, the fine particles are crushed and dropped onto the conveyor 6.

FIG. 5 shows an example of crushing teeth 11 for primary crushing and crushing teeth 12 for secondary crushing. Crushed teeth are bits. The primary crushing bit 13 has a pointed tooth shape,
The bit 14 for secondary crushing has a flat tooth shape. In each case, the workpiece carried between the rolls is chewed between the bits. However, the shape of the crushing teeth 11 and 12 shown in FIG. 5 is an example, and is not necessarily limited to this shape.

The fine particles of the object to be processed which have been subjected to the secondary crushing process fall onto the conveyor 6, are conveyed to the outside of the lower frame 8 by one-way feeding of the conveyor 6, fall to the ground from the end of the conveyor, and accumulate. Is done.

In FIG. 6, the rotating roll 5a (or 5)
The height of the crushing teeth 12 of c) is constant,
On the circumference of b, several types of crushing teeth having different heights are attached. In this embodiment, an example is shown in which three types of crushing teeth 12a, 12b, and 12c having different heights are provided on the fixed roll 5b. Each crushed tooth 12a, 12
Six b and 12c are attached at an indexing angle of every 60 degrees of the central angle of the fixed roll 5b, and two corresponding two at 180 degrees are crushing teeth having the same height. Hereinafter, two sets of crushed teeth having the same height are distinguished as a first set A, a second set B, and a third set C. In this embodiment, the height of the crushing teeth 12a, 12b, 12c of each of the first to third sets is different, but the crushing teeth themselves use the same shape bit 14 for all the sets, and the difference in height is different. Is a bit 14 and a fixed roll 5b
The height of the teeth varies depending on the thickness t of the shim 15 interposed therebetween.

In FIG. 7, the first set A has a bit 14 directly mounted on the periphery of the fixed roll 5b without using the shim 15.

The second set B has a bit 14 attached using a shim 15 having a thickness of t ₁ . The third set C
The bit 14 is attached using a shim 15 having a thickness t ₂ (t ₂ > t ₁ ). Crushed teeth 1 of first to third sets A to C
When any one of 2a, 12b, and 12c is selected and used, the crushing teeth 12a, 12b, or 12c of the set to be used face the rotating rolls 5a, 5c on both sides, respectively.

In FIG. 6A, when the crushing teeth of the first set A are selected, for example, if the distance between the crushing teeth 12a and the rotating roll 5a (5c) is set to 40 mm, The crushing particle size of the object to be crushed between the fixed roll 5b and the rotating roll 5a (5c) is 0 to 40 mm. Further, as shown in FIG. 6B, the crushed teeth 12
If the thickness t of the shim is t = 10 mm when b is selected, the crushing particle size of the object to be processed is set to 0 to 30 mm, and as shown in FIG. If the thickness t of the shim is 20 mm when selected, the crushing particle size of the object to be treated is set to 0 to 20 mm. Of course,
The crushing teeth 12a, 12b or 12c and the rotating roll 5a (5
The setting of the interval with c) is free.

The crushing teeth of the first to third sets A to C are mounted at an index angle of every 60 °.
The crushing teeth 12a of the second set B can be switched to the crushing teeth 12b of the second set B by rotating the fixed roll 5b by 60 °, and by further rotating the fixing roll 5b by 60 °, the crushing teeth 12c of the third set C are switched. In the drawing, reference numeral 16 denotes a bolt hole of a set bolt. After adjusting to any one of the first to third sets A to C of the fixed roll 5b, a set bolt (not shown) is inserted into the bolt hole 16 to fix the fixed roll 5b to the body of the crusher. Thus, the fixed rolls 5b are fixed at the respective index angles.

In the above embodiment, the fixed roll 5
Although the example which used the combination of b and the rotating roll 5a (5c) for the secondary crushing of the to-be-processed object is shown, the combination of the fixed roll and the rotating roll is not necessarily limited to the secondary processing,
It can be applied to general crushing treatment including primary treatment. Further, in the above embodiment, an example in which the invention is applied to a stationary crusher is shown, but the crusher may be provided with wheels on a machine frame so that the crusher can be moved while being towed,
The same applies to self-propelled crushers.

[0029]

As described above, according to the present invention, a set of a fixed roll and a rotating roll is used, and several types of crushing teeth having different heights provided on the fixed roll according to the size of the crushing process are selectively used. In particular, by adjusting the turning angle of the fixed roll, a crushing tooth having a desired height can be selected and the crushing particle size can be set. Further, according to the present invention, the crushing teeth of the same shape are used for the fixing roll, and a shim is interposed between the crushing teeth and the fixing roll, and the height of the crushing teeth is optionally set by changing the thickness of the shim. Can be adjusted. According to the present invention, the rotating rolls are disposed on both sides of the fixed roll, and the same type of fixed teeth are attached at an angle of 180 ° around the fixed roll, so that both rotating rolls are provided. At the same time, it is possible to switch to the same type of fractured tooth.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a crusher to which the present invention is applied.

FIG. 2 is a side view of the crusher.

FIG. 3 is a plan view of the crusher.

FIG. 4 is a diagram showing an example of a combination of a primary crushing roll and a secondary crushing roll.

FIG. 5 shows an example of a crushed tooth, in which (a) is for primary crushing and (b) is for secondary crushing.

FIGS. 6A to 6C are diagrams showing examples of combinations of crushed teeth of a rotating roll and crushed teeth of a fixed roll.

FIGS. 7A to 7C are diagrams illustrating setting examples of a crushing particle size.

FIG. 8 is a view showing an example of a conventional rotary crusher-type crusher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher 2 Machine frame 3 Hopper 4 Primary crushing roll set 4a, 4b roll 5 Secondary crushing roll set 5a, 5b, 5c roll 6 Conveyor 7 Upper frame 8 Lower frame 9 Motor 10 Motor 11 Crushing teeth of primary crushing roll 12 Crushing teeth of secondary crushing roll 13 bits 14 bits 15 shims 16 bolt holes

Claims (6)

[Claims] 1. A crusher having a set of a fixed roll and a rotating roll, wherein each roll has crushing teeth on its circumference, and the rotating roll is driven to rotate in one direction when crushing an object to be processed. The fixed roll is fixed at a fixed position, and the crushing teeth are teeth for chewing and breaking the workpiece put between adjacent rolls, and the height of the crushing teeth of the fixed roll facing the crushing teeth of the rotating roll. The crusher is characterized in that the size is changed according to the size of the crushing process of the object. 2. The fixed roll has several types of crushing teeth with different heights on the circumference, the rotation angle is changed, and the crushing teeth of the selected specific height are fixed facing the rotating roll. The crusher according to claim 1, wherein the crusher is a crusher. 3. A crusher having a set of one fixed roll and two rotating rolls, wherein the fixed roll is disposed at the center and the rotating rolls are arranged in parallel on both sides of the fixed roll. The crushing teeth of the fixed roll meshed with the crushing teeth of (1) have the same height. 4. The fixed roll has two crushing teeth of the same type, and each two crushing teeth of the same type are mounted on the circumference of the rotating roll at a central angle of 180 °. The crushing machine according to claim 3, wherein the crushing machine is used. 5. The tooth height of the crushing teeth mounted on the circumference of the fixed roll is determined by the thickness of the shim interposed between the roll and the crushing teeth. Item 5. A crusher according to item 1, 2, 3, or 4. 6. The fixed roll is capable of adjusting a turning angle, and the crushing teeth having a selected specific height are fixed at an indexing angle facing the rotating roll. The crusher according to 1, 2, 3, 4 or 5.