JP2024021998A - roll crusher - Google Patents

Abstract

An object of the present invention is to eliminate uneven wear occurring in a pair of rolls without replacing the pair of rolls. [Solution] A first roll 11 is rotatably supported by a frame 2 and rotated by a first drive unit 13 such that a rotation axis 11a of a first roll 11 and a rotation axis 12a of a second roll 12 are arranged in parallel. In the roll crusher 1 that crushes the workpiece between the second roll 12 rotated by the second drive unit 14, the first roll 11 and the second roll 12 are rotated at a lower rotation speed than during crushing and in the opposite direction. are rotated by the first cutting drive unit 17 and the second cutting drive unit 18, and the first cutting unit 15 includes a blade 34 that scrapes the surface of the first roll 11 and the blade 34 that scrapes the surface of the second roll 12. A second cutting section 16 provided thereon is movable via wheels 31 on the first guide rail 6 and second guide rail 7 provided on the frame 2, and the first cutting section 15 and the second cutting section 16 are On the other hand, wheels 31 are provided so as to be slidable in the vertical direction. [Selection diagram] Figure 1

Description

The present invention relates to a roll crusher that crushes a workpiece between a pair of rolls.

BACKGROUND ART Conventionally, a roll crusher has been known that includes a pair of rolls with rotating shafts installed in parallel, and rotates the pair of rolls in opposite directions to crush a workpiece between the pair of rolls. In this roll crusher, the distance between the pair of rolls can be arbitrarily set depending on the type of the workpiece to obtain a workpiece of a desired size.

In this roll crusher, abrasion occurs on the surfaces of the pair of rolls due to long-term processing of the workpiece. Furthermore, when relatively hard objects such as concrete, natural stone, ore are processed, the surfaces of the pair of rolls rapidly wear out. If the wear on the surface of a pair of rolls occurs uniformly in the axial direction of the rotating shaft and the circumferential direction of the rolls, it is possible to obtain a processed material of the desired size by adjusting the distance between the pair of rolls. Can be done.

However, when the workpiece is processed in a state that is biased in the axial direction between the pair of rolls, uneven wear occurs on the surface of the pair of rolls, which is uneven in the axial direction of the rotating shaft or in the circumferential direction of the roll. . When uneven wear occurs, wear tends to be accelerated only in that part, and the distance between the pair of rolls increases only in that part, making it uneven, making it impossible to obtain a processed product of a desired size.

When uneven wear occurs on a pair of rolls, it is common practice to replace the rolls. Therefore, a roll crusher that can easily perform roll replacement work is known (see, for example, Patent Document 1). In the roll crusher described in Patent Document 1, the pair of crushing rollers (rolls) each include a tire wheel fixed to a drive shaft (rotating shaft), and a tire wheel that is fitted into the outer periphery of the tire wheel and has an adjustable air pressure. The pneumatic tire is equipped with a pneumatic tire and a cylindrical body that is harder than the object to be treated and is attached to the outer periphery of the pneumatic tire.

In the roll crusher described in Patent Document 1 that includes such a roll, when replacing the roll, the cylindrical body of the roll can be attached and detached by adjusting the air pressure of the pneumatic tire.

Further, depending on the physical properties of the object to be processed, the object to be processed may adhere to the surfaces of the pair of rolls. If the object to be processed is processed with the object adhered to the surfaces of the pair of rolls, the above-mentioned uneven wear may occur on the surfaces of the pair of rolls.

If uneven wear occurs on a pair of rolls due to adhesion of processed materials, the crushing roll is equipped with a scraper as a scraping mechanism, and during crushing, the scraper scrapes off the adhering materials on the surface of the pair of rolls. A roll crusher has been proposed (for example, see Patent Document 2).

Japanese Patent Application Publication No. 2006-297340 Japanese Unexamined Patent Publication No. 53-34167

Since the roll of a roll crusher is usually a large-sized member, the cylindrical body of the roll crusher described in Patent Document 1 is also a large-sized member. Therefore, the task of replacing the cylindrical body is complicated, as it takes time and effort to adjust the air pressure of the pneumatic tire and to attach and detach the cylindrical body, which is a large member.

Further, in the roll crusher described in Patent Document 2, deposits on the roll surface can be scraped off with a scraper without replacing the roll. However, it is difficult to eliminate uneven wear that occurs on the roll using a scraper that scrapes off deposits on the surface of the roll.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a roll crusher that can eliminate uneven wear occurring in a pair of rolls without replacing the pair of rolls.

In order to solve the above problems, the present invention includes a pair of rolls whose rotation axes are arranged in parallel, and a drive unit that rotates the pair of rolls, and a drive unit that rotates the pair of rolls that is rotated by the drive unit. A roll crusher for crushing a processed material, comprising: a cutting drive section that rotates the rolls at a rotation speed lower than the rotation speed of the pair of rolls rotated by the drive section; and a cutting section equipped with a blade. A configuration may be adopted in which the blade of the cutting section scrapes the surface of the roll while the roll is rotated by the cutting drive section.

According to this configuration, when uneven wear occurs on the surfaces of a pair of rolls, the blades of the cutting section scrape the surface of the rolls while the cutting drive section is rotating the rolls, without replacing the rolls. The distance between the pair of rolls can be made uniform in the axial direction of the rotating shaft.

Adopting a configuration in which the cutting drive unit and the cutting unit are provided for each of the pair of rolls, and the cutting unit is provided at an outer position in a direction in which the rotational axes of the pair of rolls are aligned. Can be done.

According to this configuration, the blade of one cutting part can scrape the surface of one of the pair of rolls, and the blade of the other cutting part can scrape the surface of the other roll of the pair of rolls. . As a result, for example, if uneven wear occurs on the surface of one of a pair of rolls, the surface of the roll can be easily scraped with the blade of the cutting section provided on the side closer to the roll.

Cutting movement in which each of the cutting parts is movable between a cutting position in which the surface of the roll located on the closer side of the pair of rolls is scraped and a non-cutting position away from the roll located on the closer side. A configuration having a device can be adopted.

In this configuration, the two cutting units are moved by the cutting movement device to a cutting position where the surface of the roll located closer to the roll is cut when cutting the surface of the roll, and the workpiece is crushed between the pair of rolls. When cutting, it can be moved to a non-cutting position.

The cutting section moving device includes a frame that rotatably supports the respective rotational axes of the pair of rolls, and a guide rail that extends along the direction in which the rotational axes of the pair of rolls are lined up, and a guide rail that the cutting section moves along the guide rail. It is possible to adopt a configuration in which the cutting section has wheels that roll on top of the cutting section, and the cutting section travels between the cutting position and the non-cutting position on the guide rail via the wheels.

Each cutting part can be easily moved between the cutting position and the non-cutting position by running the wheels of the cutting part moving device on a guide rail.

The wheel is attached to the cutting section so as to be slidable in the vertical direction, and when the wheel slides upward, the cutting section is supported by the frame, and when the wheel slides downward, the It is possible to employ a configuration in which the cutting part is able to run on the guide rail.

In this configuration, when the cutting part is moved to the cutting position, the cutting part is supported by the frame, and the cutting part is fixed to the frame. When the surfaces of the pair of rolls are shaved with the blades of the cutting section, a reaction force acting on the cutting section can be received.

According to this invention, the surface of the roll can be cut with the blade of the cutting part without replacing the roll, and uneven wear of the roll can be eliminated and the distance between the pair of rolls can be maintained evenly. can.

A front view showing a roll crusher according to an embodiment of this invention A plan view showing the roll crusher of the same embodiment A front view showing a state in which the surfaces of a pair of rolls of the roll crusher of the same embodiment are shaved by two cutting parts A front view showing the first cutting part that scrapes the surface of one roll of the roll crusher of the same embodiment. (a) Partially enlarged side view showing a state in which the first cutting part of the roll crusher of the same embodiment runs on the first guide rail, (b) The first cutting part of the roll crusher of the same embodiment is supported by the frame (c) A partially enlarged side view showing a state in which the first cutting part of the roll crusher of the same embodiment is fixed to the side frame.

Embodiments of this invention will be described based on the drawings. As shown in FIGS. 1 and 2, a roll crusher 1 according to this embodiment includes a square box-shaped metal frame 2 with an open upper part, and a pair of first rolls rotatably supported within the frame 2. 11 and a second roll 12, a first drive unit 13 that rotates the first roll 11, and a second drive unit 14 that rotates the second roll 12. 12. In addition, in this specification, the length direction means the length direction of the frame 2, and the width direction means the width direction of the frame 2.

Further, the roll crusher 1 includes a first cutting part 15 that cuts the surface of the first roll 11 and a second cutting part 16 that cuts the surface of the second roll 12. Furthermore, it has a first cutting drive unit 17 that rotates the first roll 11 and a second cutting drive unit 18 that rotates the second roll 12.

As shown in FIGS. 1 and 2, the frame 2 is constructed by combining a pair of side plates 3 extending in the length direction and a pair of end plates 4 extending in the width direction into a rectangular frame shape. The side plate 5 is fixed. The lower part of the frame 2 is open, and crushed objects are conveyed by a conveyor (not shown). A first guide rail 6 and a second guide rail 7 are provided on both longitudinal sides of the pair of side plates 5, respectively. The first guide rail 6 is formed from a pair of rails 6a, 6a extending in the length direction, and each rail 6a is provided at the outer end of the side plate 5 in both width directions. The second guide rail 7 is formed from a pair of rails 7a, 7a extending in the length direction, and each rail 7a is provided at the outer end of the side plate 5 in both width directions.

The first roll 11 and the second roll 12 have rotating shafts 11a and 12b that rotate together. Parts of the first roll 11 and the second roll 12 protrude upward from the frame 2. The rotating shaft 11a of the first roll 11 and the rotating shaft 12a of the second roll 12 are arranged horizontally and in parallel. The rotating shaft 11a and the rotating shaft 12a are spaced apart from each other in the direction in which they are lined up (lengthwise). The rotating shaft 11a and the rotating shaft 12a are rotatably supported by a bearing 11b and a bearing 12b fixed to a pair of side plates 3, 3 of the frame 2, respectively.

One end of the rotating shaft 11a in the width direction projects outward from the side plate 3 of the frame 2. A pulley 19 and a sprocket 21 are fixed to the protrusion of the rotating shaft 11a. The other end of the rotating shaft 12 a in the width direction projects outward from the side plate 3 of the frame 2 . A pulley 20 and a sprocket 22 are fixed to the protrusion of the rotating shaft 12a.

As shown in FIG. 2, the first roll 11 and the second roll 12 are covered by a hopper 9 (see the two-dot chain line in FIGS. 1 and 2) and a cover 8 (see the one-dot chain line in FIG. 2) into which the workpiece is introduced. It is being said. The hopper 9 is installed within a range in the length direction between the rotation shaft 11a of the first roll 11 and the rotation shaft 12a of the second roll 12, and the cover 8 is arranged so that at least the hopper 9 is connected to the first roll. 11 and the second roll 12. Here, the cover 8 has a structure that can be removed during roll cutting.

The first drive section 13 and the first cutting drive section 17 are provided outside the frame 2 on one side in the width direction. The second drive unit 14 and the second cutting drive unit 18 are provided outside the frame 2 on the other side in the width direction. The first drive unit 13 includes an electric motor and a clutch (not shown) as a drive source, and transmits the driving force of the rotating shaft 13a of the electric motor to the rotating shaft 11a via a belt 13b and a pulley 19. The second drive unit 14 includes an electric motor and a clutch (not shown) as a drive source, and transmits the driving force of the rotating shaft 14a of the electric motor to the rotating shaft 12a via the belt 14b and the pulley 20.

The first drive unit 13 and the second drive unit 14 rotate the first roll 11 and the second roll 12 in opposite directions (see arrow a in FIG. 1) so that they face inward when viewed from above. do. Due to this rotation, the material to be processed fed from the hopper 9 is crushed between the first roll 11 and the second roll 12. During crushing, the first roll 11 and the second roll 12 rotate in a range of 100 to 120 rpm, for example.

The first cutting drive unit 17 includes an electric motor (not shown), and transmits the driving force of the rotating shaft 17a of the electric motor to the rotating shaft 11a via the chain 17b and the sprocket 21. The second cutting drive section 18 includes an electric motor (not shown), and transmits the driving force of the rotating shaft 18a of the electric motor to the rotating shaft 12a via the chain 18b and the sprocket 22.

The first cutting drive unit 17 and the second cutting drive unit 18 move the first roll 11 and the second roll in mutually opposite directions (see arrow b in FIG. 3) so that they face outward when viewed from above. Rotate to . This rotation is performed in a direction opposite to the rotation of the first roll 11 and second roll 12 during the above-mentioned crushing, and at a low rotation speed, for example, 8 to 5 rpm. range.

As shown in FIG. 2, the first cutting portion 15 includes a frame-like body 30 extending in the width direction, a pair of wheels 31 attached to both sides of the frame-like body 30 in the width direction, and a frame-like body 30 extending in the width direction within the frame-like body 30. It has a slider 32 that moves, a holder 33 that moves vertically with respect to the slider 32, and a cutting tool 34 as a blade held by the holder 33.

As shown in FIG. 4, the frame-shaped body 30 is diagonally arranged between a rectangular bottom plate 30a, a pair of side plates 30b rising from both widthwise ends of the bottom plate 30a, and a pair of side plates 30b. It has a back plate 30c and a protruding plate 30d that protrudes outward in the width direction from a pair of side plates 30b. A horizontal screw shaft 35 extending in the width direction is rotatably supported between the pair of side plates 30b. The back plate 30c is arranged at an acute angle (for example, 30 degrees) with respect to the vertical direction. A horizontal screw shaft 35 is located inside the back plate 30c in the length direction.

As shown in FIG. 5(a), each wheel 31 has a shaft 36a that rotatably supports it. A shaft 36a is rotatably supported by a square box body 36. The wheel 31 is located on the rail 6a of the first guide rail 6. A flange is formed at the outer edge portion of the outer periphery of the wheel 31 in the width direction to prevent the wheel 31 from coming off the rail 6a. Such a first cutting section 15 has a cutting section moving device having wheels 31 and a first guide rail 6.

As shown in FIG. 4, flanges 36b are formed on both sides of the box body 36 in the length direction, and the flanges 36b are provided with elongated holes 36c in the vertical direction. The bolt 37 passing through the long hole 36c of the flange 36b of the box body 36 and the side plate 30b of the frame body 30 is screwed to the bolt 37 with a nut (not shown). Thereby, the wheels 31 are attached to the frame-shaped body 30 via the box body 36 so as to be movable in the vertical direction. The box body 36 is in a state in which the tip of a positioning bolt 38 screwed into the protruding plate 30d of the frame-shaped body 30 abuts against the box body 36.

As shown in FIG. 5(a), when the positioning bolt 38 is screwed into the protruding plate 30d, the box body 36 pushed by the positioning bolt 38 moves downward relative to the frame-shaped body 30. By moving the box body 36 downward, the frame body 30 is separated from the side plate 5, and the first cutting portion 15 can run on the first guide rail 6 by the wheels 31. As shown in FIG. 5(b), when the positioning bolt 38 is rotated in the direction of removal with respect to the protruding plate 30d, the box body 36 moves upward relative to the frame-shaped body 30. By moving the box body 36 upward, the frame body 30 is placed on the side plate 5, and the frame body 30 is supported by the side plate 5.

The slider 32 is a rectangular parallelepiped member and has an internal thread formed along the width direction. The female thread of the slider 32 is threadedly connected to the horizontal threaded shaft 35. A surface portion of the slider 32 facing outward in the length direction comes into surface contact with the back plate 30c of the frame-shaped body 30. Further, a bearing frame 39 is fixed to a surface portion of the slider 32 facing inward in the length direction. The bearing frame 39 is formed by bending both ends of a band-shaped member in the same direction, and rotatably supports both ends of the vertical screw shaft 40 at the bent portions of both ends. The vertical screw shaft 40 is supported parallel to the back plate 30c of the frame-shaped body 30 and at right angles to the horizontal screw shaft 35.

The holder 33 is a rectangular parallelepiped member and has an internal thread formed parallel to the vertical threaded shaft 40 . The female thread of the holder 33 is threadedly connected to the vertical threaded shaft 40. A surface portion of the holder 33 facing outward in the longitudinal direction is in surface contact with a surface portion of a portion of the bearing frame 39 excluding both ends. A rectangular shaft-shaped cutting tool 34 serving as a blade is detachably attached to a surface portion of the holder 33 facing inward in the length direction. A cutting edge portion for scraping the surface of the first roll 11 is formed at the lower end of the cutting tool 34 .

Furthermore, the contact position of the cutting edge of the cutting tool 34 with respect to the first roll 11 can be changed with respect to the rotation center of the rotating shaft 11a of the first roll 11 (the contact position of the cutting edge of the cutting tool 34 with respect to the first roll 11). 5(c) so that an imaginary line is drawn toward the first roll 11 side along the inclination direction of the cutting tool 34, and the position of the imaginary line with respect to the rotation center of the rotating shaft 11a can be changed. As shown, a liner 41 is removably provided between the frame-shaped body 30 and the side plate 5, and a long hole 36d extending in the length direction is provided in the lower surface of the box body 36. Further, as shown in FIG. 2, a long hole 5a extending in the length direction is provided in the vicinity of the first roll 11 of the side plate 5.

The second cutting part 16 has the same configuration as the first cutting part 15. The second cutting part 16 differs from the first cutting part 15 in that it is arranged on the second guide rail 7 and in the opposite direction. Therefore, the second cutting part 16 is given the same reference numeral as the first cutting part 15, and the explanation of its structure will be omitted. Further, the cutting tool 34, which is a blade of the second cutting section 16, cuts the surface of the second roll 12. Note that the blade includes one for polishing not only the cutting tool 34 but also the surface of the first roll 11 and the surface of the second roll 12.

The roll crusher 1 according to the embodiment of the present invention is configured as described above. The crushing of the workpiece by the roll crusher 1 of this embodiment is performed as follows.

First, as shown in FIG. 1, the first cutting part 15 is located on the outside in the length direction of the frame 2 on the first guide rail 6, and the cutting tool 34 is separated from the surface of the first roll 11. It becomes. Similarly, the second cutting part 16 is also located on the outside in the length direction of the frame 2 on the second guide rail 7, and its cutting tool 34 is separated from the surface of the second roll 12. Furthermore, the chain 17b of the first cutting drive section 17 has been removed from the sprocket 21, and the chain 18b of the second cutting drive section 18 has also been removed from the sprocket 22.

Then, the first drive section 13 rotates the first roll 11, and the second drive section 14 rotates the second roll 12. At this time, the first roll 11 and the second roll 12 are rotated inwardly (see arrow a in FIG. 1) when viewed from above, for example, at a required rotation speed within a range of 100 to 120 rpm (in this embodiment, 110 rpm). The workpiece introduced from the hopper 9 is crushed between the rotating first roll 11 and second roll 12.

In the roll crusher 1, the surfaces of the first roll 11 and the second roll 12 are coated with the above-mentioned materials due to long-term processing of the workpiece or processing of relatively hard workpieces such as concrete, natural stone, ore, etc. Uneven wear may occur.

When the uneven wear described above occurs on the surfaces of the first roll 11 and the second roll 12, the roll crusher 1 eliminates the uneven wear as described below.

That is, first, the power to the electric motor is cut off to stop the rotation of the first roll 11 and the second roll 12 by the first drive section 13 and the second drive section 14. Subsequently, the chain 17b is wound around the sprocket 21 of the first cutting drive section 17, and the chain 18b is wound around the sprocket 22 of the second cutting drive section 18.

Subsequently, after removing the cover 8, the first cut portion 15 is run inward in the length direction on the first guide rail 6 via the wheels 31 to get as close to the surface of the first roll 11 as possible. position (cutting position). Then, as shown in FIG. 5(b), the positioning bolt 38 of the first cutting part 15 is rotated in the direction of extraction with respect to the protrusion plate 30d, and the box body 36 is moved upward relative to the frame-shaped body 30. move it to Thereby, the frame-shaped body 30 is brought into a state where it is supported by the side plate 5. Then, like the first cutting part 15, the second cutting part 16 is brought into a state in which the frame-shaped body 30 is supported by the side plate 5.

In this state, if it is necessary to change the contact position of the cutting edge of the cutting tool 34 with respect to the first roll 11 with respect to the rotation center of the rotation shaft 11a of the first roll 11, as shown in FIG. A liner 41 is provided between the shaped body 30 and the side plate 5. Subsequently, if necessary, a bolt 42 is inserted between the long hole 36d of the box body 36 of the first cutting part 15 and the second cutting part 16 and the long hole 5a of the side plate 5 and fastened with a nut. At this time, the contact position of the cutting edge portion of the cutting tool 34 with respect to the first roll 11 can be adjusted by the position of the bolt 42 with respect to the long hole 36d of the box body 36 and the long hole 5a of the side plate 5. Here, the fixing of the frame-shaped body 30 of the first cutting part 15 and the second cutting part 16 to the side plate 5 is not limited to the above-mentioned means, but is fastened by known methods such as fastening bolts and nuts or tightening a vise. Means can be used.

Thereafter, the first cutting drive unit 17 rotates the first roll 11, and the second cutting drive unit 18 rotates the second roll 12. At this time, the rotation direction of the first roll 11 and the second roll 12 is opposite to the direction during the above-mentioned crushing, and is directed outward when viewed from above (see arrow b in FIG. 3). Further, the rotation speed is lower than that during the above-mentioned crushing, for example, a required rotation speed within the range of 8 to 5 rpm (6.75 rpm in this embodiment).

Next, the horizontal screw shaft 35 of the first cutting section 15 is rotated to move the slider 32 to a position in the width direction where it is necessary to cut the surface of the first roll 11. Then, by rotating the vertical screw shaft 40, the cutting edge portion of the cutting tool 34 is pressed against the surface of the first roll 11, and the surface of the first roll 11 is scraped. During this shaving operation, the horizontal screw shaft 35 is rotated to shaving the surface of the first roll 11 within a required range in the width direction. Further, in the second cutting section 16 as well, similarly to the first cutting section 15, the horizontal screw shaft 35 and the vertical screw shaft 40 are rotated to perform a cutting operation on the surface of the second roll 12.

The vertical screw shaft 40 of the first cutting section 15 is rotated to separate the cutting edge of the cutting tool 34 from the surface of the first roll 11, and the cutting operation is completed. Thereafter, the first cutting portion 15 releases the fixation between the frame-like body 30 and the side plate 5, and tightens the positioning bolt 38 of the frame-like body 30. As a result, as shown in FIG. 5(a), the box body 36 moves downward relative to the frame-shaped body 30, and the frame-shaped body 30 separates from the side plate 5. In this state, the first cutting part 15 is made to run outward in the longitudinal direction on the first guide rail 6 via the wheels 31, and is moved to a non-cutting position. Similarly to the first cutting part 15, the second cutting part 16 also finishes the cutting work, and is caused to run outward in the length direction on the second guide rail 7 via the wheels 31, and is moved to a non-cutting position. .

As described above, the roll crusher 1 of this embodiment can cut the first roll 11 and the second roll 12 by the first cutting part 15 and the second cutting part 16 without replacing the first roll 11 and the second roll. The surface can be scraped.

Moreover, the first cutting part 15 and the second cutting part 16 are attached so that the box body 36 to which the wheels 31 are attached can be slid in the vertical direction with respect to the frame-shaped body 30. Therefore, when the box body 36 slides upward relative to the frame-like body 30, the frame-like body 30 comes into a state where it is supported by the side plate 5 (support state). On the other hand, when the box body 36 slides downward relative to the frame-shaped body 30, the first cutting part 15 and the second cutting part 16 pass through the wheels 31 to the first guide rail 6 and the second guide rail 7. It becomes possible to run on it (runable state).

During the above-mentioned cutting operation, the first cutting part 15 (second cutting part 16) is subjected to an outward reaction force in the longitudinal direction from the rotating first roll 11 (second roll 12) via the cutting tool 34. do. The first cutting part 15 (second cutting part 16) in the supported state can receive a reaction force by fixing the frame-shaped body 30 to the side plate 5. In addition, when the weight of the first cutting part 15 (second cutting part 16) is sufficiently large, the frame-like body 30 and the side plate 5 are not fixed to the side plate 5 in the supported state. The reaction force can be received by the frictional resistance between the two.

Moreover, the first cutting part 15 (second cutting part 16) in the runnable state can be made to run on the first guide rail 6 (second guide rail 7) in the longitudinal direction via the wheels 31. , it can be easily moved between the above-mentioned cutting position and non-cutting position.

The roll crusher 1 of this embodiment includes a first cutting drive unit 17 that rotates the first roll 11 and a second cutting drive unit 18 that rotates the second roll 12, as shown in FIG. has been described as an example, but only a single first cutting drive section 17 may be provided, and the first roll 11 and the second roll 12 may be rotated by the first cutting drive section 17.

Moreover, the roll crusher 1 of this embodiment includes a first cutting part 15 that scrapes the surface of the first roll 11 and a second cutting part 16 that scrapes the surface of the second roll 12, as shown in FIG. has been described as an example, but the surface of the first roll 11 or the surface of the second roll 12 may be scraped by the first cutting part 15, provided that only the first cutting part 15 is provided. In this case, the first cut portion 15 may be placed on the first guide rail 6 or the second guide rail 7.

1 Roll crusher 2 Frame 3 Side plate 4 End plate 5 Side plate 5a Long hole 6 First guide rail 7 Second guide rail 8 Cover 9 Hopper 11 First roll 11a Rotating shaft 12 Second roll 12a Rotating shaft 13 First drive section 14 Second drive section 15 First cutting section 16 Second cutting section 17 First cutting drive section 18 Second cutting drive section 30 Frame-shaped body 31 Wheel 32 Slider 33 Holder 34 Bit (blade)
35 Horizontal threaded shaft 36 Box body 36d Long hole 37 Bolt 38 Positioning bolt 39 Bearing frame 40 Vertical threaded shaft 41 Liner 42 Bolt

Claims (5)

A roll crusher that includes a pair of rolls whose rotation axes are arranged in parallel and a drive unit that rotates the pair of rolls, and crushes a processed material between the pair of rolls that are rotated by the drive unit,
a cutting drive unit that rotates the rolls at a rotation speed lower than the rotation speed of the pair of rolls rotated by the drive unit; and a cutting unit equipped with a blade;
A roll crusher, wherein a blade of the cutting section scrapes the surface of the roll while the roll is rotated by the cutting drive section. The cutting drive unit and the cutting unit are provided for each of the pair of rolls, and the cutting unit is provided at an outer position in a direction in which the rotation axes of the pair of rolls are aligned. The roll crusher according to claim 1. A cutting unit in which each of the cutting units is movable between a cutting position where the surface of the roll located closer to the pair of rolls is shaved and a non-cutting position away from the roll located closer to the pair of rolls. The roll crusher according to claim 2, further comprising a moving device. The cutting section moving device includes a frame that rotatably supports the respective rotational axes of the pair of rolls, and a guide rail that extends along the direction in which the rotational axes of the pair of rolls are arranged, and a guide rail that the cutting section moves along the guide rail. 4. The roll according to claim 3, further comprising a wheel that rolls on the roller, and wherein the cutting section travels between the cutting position and the non-cutting position on the guide rail via the wheel. Crusher. The wheel is attached to the cutting section so as to be slidable in the vertical direction, and when the wheel slides upward, the cutting section is supported by the frame, and when the wheel slides downward, the 5. The roll crusher according to claim 4, wherein the cutting portion is able to run on the guide rail.

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