JPH10331185A - Drum crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum crusher which is attached to one unit of hydraulic shovel, efficiently crushes objects exfoliated from the asphalt road surface, and allows dispersion of the crushed objects. SOLUTION: A drum cutter 15 is rotatably borne in a frame which accommodates objects to be crushed, and stationary blades 25 alternately meshed with blades 22 furnished protrusively on the peripheral surface of the drum cutter are installed over the hole 24 in frame for taking-out of the cursed objects. The drum cutter 15 is driven by a hydraulic motor fixed to the frame, and the frame is furnished with bracket(s) for mounting on the arm of a hydraulic shovel removably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum crusher for crushing flakes (material to be crushed) such as flakes separated from a road pavement surface such as an asphalt road surface, stone materials and concrete materials generated when a building is dismantled, and the like. In particular, the present invention aims at improving the work efficiency and reducing the cost of the work of crushing the crushed material and the work of dispersing and spraying the crushed material as embankment by being attached to the arm of the power shovel in an attachment manner.

[0002]

2. Description of the Related Art Heretofore, waste (crushed material) separated from a road pavement surface such as an asphalt road surface has been finely crushed into earth and sand and reused as embankment. For example,
As shown in FIG. 19A, the crushed object 5 is first crushed into small pieces by a known concrete splitter 4 attached to the tip of the arm 2 of the power shovel 1. Next, as shown in FIG. 19 (B), the crushed material 5 to be crushed is mounted on a power shovel 1 having a bucket 6 attached to an arm 2 as shown in FIG. 19 (B). Crusher 7 or self-propelled crusher 8 as shown in FIG.
And crushed finely by these crushers 7 and 8 in the form of earth and sand. These crushers 7, 8
A jaw crusher, a drum crusher, a rotary crusher, or the like is used.

[0003]

However, FIG.
When the stationary crusher 7 shown in (B) is used, the crushed material 5 crushed into small pieces by the concrete small crusher 4.
Must be transported by truck or the like to the installation location of the crusher 7. In addition, it is necessary to transport the crushed material 5 'crushed by the crusher 7 to a site where the crushed material 5' is reused as embankment by a truck or the like. As described above, when the stationary crusher 7 is used, it is difficult to efficiently perform the crushing operation, and the cost required for the operation is high.

On the other hand, a self-propelled crusher 8 shown in FIG.
Is equipped with the traveling device 9 so that it can move freely within the site of the dismantling work. However, the traveling device 9
Since the crusher 8 is a trackless type, the crusher 8 cannot travel on a general road, and must be transported to a demolition work site by a large truck or the like.

[0005] Further, regardless of whether the above-mentioned crushers 7 and 8 of the stationary type and the self-propelled type are used, in order to use the crushed material 5 'crushed in the form of earth and sand as embankment, a power shovel or the like is used. It is necessary to disperse and disperse the material to be crushed 5 ', and it is difficult to perform the operation efficiently at this point, and the cost required for the operation is high. Furthermore, both the stationary and self-propelled crushers 7 and 8 are dedicated machines for crushing work, and are therefore large and expensive. In particular, since these crushers 7 and 8 are provided with the conveyor 10 for discharging the crushed material 5 ', they are large and expensive.

The present invention has been made in order to solve the above-mentioned problem, and a task of scooping a crushed object, crushing, and dispersing and spraying the crushed material as an embankment with one unit. The task is to perform it efficiently.

[0007]

In order to solve the above problems, according to the present invention, a drum cutter is rotatably mounted in a frame for accommodating a material to be crushed. A fixed blade that alternately meshes with a blade protruding from the outer peripheral surface is mounted above the crushed material take-out port of the frame, and the drum cutter is rotationally driven by a hydraulic motor fixed to the frame. A drum crusher is provided in which a bracket that is detachably attached to an arm of a hydraulic shovel is provided.

According to the structure of the first aspect, the bracket of the drum crusher is attached to the arm of the hydraulic shovel, and in this state, the hydraulic shovel can be self-propelled to a required position on the dismantling site of the building by the traveling device. Further, by the driving means, the object to be crushed can be crushed by rotating the drum cutter.

The hydraulic motor is of a one-way rotation type or a forward / reverse rotation type, and is driven by a hydraulic source provided on the hydraulic excavator. Further, an output shaft of the hydraulic motor is directly connected to the drum cutter. Claim 2).

According to the structure of the second aspect, the drum cutters can be rotated by the directly connected hydraulic motors without using a gearbox or the like. When the motor is rotated forward and reverse, the crushed material remains in the state of being bitten between the blade of the drum cutter and the fixed blade. Biting can be released. On the other hand, if the motor is a one-way rotary type, the object to be crushed can be prevented from rotating in the reverse direction and jumping out to the charging side. When the motor is a one-way rotary type, a controller or / and a flow passage opening / closing valve that detects an increase in the hydraulic pressure and stops the operation in case a crushed object is caught between the blades is provided. Preferably, it is inserted.

The blades protruding from the outer peripheral surface of the drum cutter are arranged at regular intervals in the circumferential direction and at regular intervals in the axial direction. Further, the blades protruding from the outer peripheral surface of these drum cutters may be arranged in a staggered arrangement by making the adjacent blades angularly phased.

Further, a part of the blade protruding from the outer peripheral surface of the drum cutter is composed of a blade having a long protruding amount, and it is preferable to partially dispose the long blade. By arranging the long blade in this way, a long crushed object can be captured. For example, when the long blades are provided at intervals of 90 degrees on the same circumference, two opposing blades are long and two blades in the orthogonal direction are short.
In addition, these long blades are spaced apart in the axial direction, for example, arranged at three locations, and the rotation angles are phased so that the long blades are not aligned on the same axis when viewed in the axial direction. I have.

When the drum cutter is of a one-way rotation type, the blade projecting from the outer peripheral surface of the drum cutter is inclined in the rotation direction. Alternatively, it has an L-shape whose tip is bent in the rotation direction (claim 7). As described above, when the object is inclined or bent in the rotation direction, the object to be crushed can be caught cheaply and the crushing efficiency can be increased.

The fixed blade fixed to the frame has a shape in which the upper surface is inclined downward toward the tip protruding toward the drum cutter, and the object to be crushed on the upper surface of the fixed blade is dropped (claim 8). As described above, when the upper surface of the fixed blade is inclined, it is possible to prevent a state in which the object to be crushed is not dropped while the object to be crushed is mounted on the upper surface of the fixed blade.

It is preferable that the fixed blade fixed to the frame is located above the crushed material taking-out port and below the axial position of the drum cutter. When the blade of the drum cutter and the fixed blade are engaged below the axis position of the drum cutter, the blade of the drum cutter rotates downward, so that the crushing force between the fixed blade and the fixed blade can be increased. The crushing efficiency can be increased.

Preferably, the fixed blades are attached to the frame in a plurality of upper and lower stages, and are arranged so that each fixed blade is engaged with a blade of the drum cutter. Also in this case, the upper fixed blade is disposed below the axial position of the drum cutter. In this manner, when the fixed blades are arranged in a plurality of upper and lower stages and crushed a plurality of times with the drum cutter blade, crushing can be performed more reliably.

A required space is provided between the fixed blade and the blade of the drum cutter. As described above, if a gap is provided between the engaging side surfaces of the blade of the drum cutter and the fixed blade, earth and sand or fine particles fall from the gap, and clogging occurs between the fixed blade and the blade of the drum cutter. Can be prevented.

The frame to which the fixed blade is attached is
It is preferable that the gap is inclined toward the drum cutter so as to minimize the gap between the fixed blade and the outer peripheral surface of the drum cutter in the vicinity of the crushed material take-out port. When the gap between the fixed blade and the drum cutter is reduced in this way, the object to be crushed can be crushed smaller.

The inclined frame is provided with a hole for inserting and removing a part of the blade of the drum cutter.
3). In addition, a protective cover plate is attached to the inclined frame outside the portion where the hole is provided, with a gap left therebetween (claim 14). That is, when the long blades are partially provided as described above, holes are required to allow these long blades to escape, and the long ones are provided with a protective cover for protecting the blades.

It is preferable that a gap adjusting member is attached to a lower end of the frame to which the fixed blade is attached, which constitutes an outlet for crushed material. By attaching the gap adjusting member in this manner, the size of the crushed material discharged from the outlet can be adjusted to a required size.

The fixed blade fixed to the frame is a reversing blade with a shear pin, and when a predetermined value or more is added,
A configuration may be adopted in which the shear pin is cut and the cutting edge is inverted. With this configuration, the object to be crushed bites between the blade of the drum cutter and the fixed blade, and when an excessive load is applied to both blades, the fixed blade can be inverted and the biting can be released. It is possible to prevent the cutter from being overloaded.

The frame includes a rear frame on which the bracket is protruded, a front frame opposed to the rear frame, and a side frame connecting the rear frame and the front frame. Extending and forming part of the top and bottom portions,
The above-mentioned drum cutter is arranged on the rear frame side of the space surrounded by these frames, and rake claws are juxtaposed at the container intake opening opened on the upper surface so as to scoop up the crushed object, while A crushed material is taken out from the crushed material outlet opening to the frame side, and a partition wall portion is provided by bending a tip of an upper surface portion protruding from the back frame toward the drum cutter. Claim 17).

A second fixed blade meshing with the blade of the drum cutter may be provided in a portion of the bottom surface extending from the lower end of the rear frame adjacent to the outlet for crushed material (claim 18). When the second fixed blade is provided in this manner, the crushed object that is not discharged from the crushed object take-out port but is rotated while riding on the blade of the drum cutter can be crushed again and discharged from the take-out port. It becomes possible.

The blade coming to the lower end position of the drum cutter may be made to protrude from the bottom opening of the frame so that the road surface can be ground (claim 19). With this configuration, it can be used for scraping the asphalt surface.

The above-mentioned frame is composed of a bucket body,
A configuration in which the drum cutter is housed inside the bucket body may be adopted.

[0026]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 7 show a first embodiment. As shown in FIG.
Is a hydraulic excavator 1 having an endless track type traveling device 12.
Attachment type is detachably attached to the tip of the third arm 14.

As shown in FIGS. 2 to 5, the drum crusher 11 has a configuration in which a drum cutter 15 is accommodated in a so-called bucket. That is, the drum cutter 1
5 is formed in a bucket shape, a rear frame 16 having a bracket 16a protruding therefrom, a front frame 17 disposed opposite to the rear frame 16, and a pair of side faces connecting the rear frame 16 and the front frame 17 to each other. And a frame 18. An upper surface portion 16b and a bottom surface portion 16c are formed to extend from the upper end of the rear frame 16 in the drawing, the rear frame side of a space surrounded by these frames is a drum cutter accommodating portion C1, and the front frame side is a material to be crushed. It is a charging section and a crushing section C2.

One drum cutter 15 is disposed in the drum cutter storage section C1, and both side frames 18 are provided.
A hydraulic motor 20 is fixed via a support plate 19, and output shafts 20a of the hydraulic motors 20 on both sides are fixed to both ends of the drum cutter 15, and the drum cutter 15 is rotatably mounted on the shaft. An outer plate 21 that covers the hydraulic motor 20 is attached to the side frame 18.

The hydraulic motor 20 supplies and discharges pressure oil from a hydraulic source (not shown) mounted on the hydraulic excavator 13 via a pipe, and drives the output shaft 20a of the hydraulic motor 20 to rotate. The hydraulic motor 20 can be rotated forward and backward by an operation switch (not shown).

The outer peripheral surface of the drum cutter 15 is provided with blades 22 at regular intervals in the circumferential direction and at regular intervals in the axial direction. Incidentally, as shown in FIG.
It is also preferable that the blades 22 are arranged in a staggered manner on the outer peripheral surface of the drum cutter 15. As shown in the figure, the blade 22 has a rake face 22a in which the side face in the rotational direction is depressed in an arc shape, and the tip of the rake face 22a is a cutting edge 22b.

On the other hand, the front frame 17 is disposed so as to be inclined downward toward the drum cutter 15, and a crushed material inlet 23 is opened between the upper end of the front frame 17 and the upper surface 16b. In addition to the above, a crushed material take-out port 24 is provided between the lower end of the front frame 17 and the bottom surface portion 16c. Further, the tip of the upper surface portion 16b is inclined downward and bent so as to be a partition wall portion 16d, and the crushed material input from the crushed material inlet 23 is the partition wall portion 16d.
To prevent it from being thrown into the rear side.

Since the front frame 17 is inclined as described above, the space between the front frame 17 and the drum cutter 15 is gradually narrowed toward the crushed material take-out port 24, and the front space where the gap is minimized A fixed blade 25 protrudes toward the drum cutter 15 near the lower end of the frame 17. Therefore, the mounting position of the fixed blade 25 is located below the axis L of the drum cutter 15.

The fixed blades 25 are arranged in the axial direction so as to bite between the blades 22 of the drum cutter 15, and a required gap is provided between opposing side surfaces 25a and 22a to form a fixed gap. It prevents clogging. And,
Each of the fixed blades 25 has a shape in which the upper surface 25b is inclined downward toward the tip protruding toward the drum cutter, and the crushed material on the upper surface 25b of the fixed blade 25 is dropped.

Further, a second fixed blade 26 protrudes in the vicinity of the outlet of the bottom portion 16c surrounding the outlet 24 for crushed material. The fixed blades 26 are also juxtaposed in the axial direction so as to bite between the blades 22 of the drum cutter 15. The second fixed blade 26 is not discharged from the crushed material outlet 24 but is inserted between the blades 22 of the drum cutter 15 and rotates the crushed material again. The crushed material is discharged from the crushed material take-out port 24.

Further, similarly to the conventional bucket, rake claws 27 project from the upper end edge of the front frame 17 surrounding the crushed material intake port 23 at intervals, and the outer plate is provided at both ends thereof. An outwardly opened side plate 28 is protrudingly provided at the front end of 21.

Next, the crushing operation of the crushed object 5 by the drum crusher 11 will be described. As shown in FIG. 7A, with the arm 14 of the excavator 13 extended,
The bucket is operated by the hydraulic cylinder 31 of the excavator 13.
When the frame of the bucket-shaped drum crusher is rotated upward as indicated by an arrow D about the connection rotating shaft 33 between the bracket 16a and the arm 14 of the frame, as shown in FIG. The object 5 to be crushed is scooped by C2.

In the state shown in FIG. 7B, the hydraulic excavator 13 is moved by the traveling device 12 to a place where embankment is performed, and then hydraulic pressure is supplied to the hydraulic motor 20 to rotate the drum cutter 15 forward. As a result, the crushed material 5 accommodated in the bucket frame is cut between the blade 22 of the drum cutter 15 and the fixed blade 25, and is discharged downward while being crushed in the form of earth and sand. 'Falls out of the crushed material outlet 25 and is discharged.

At this time, if the crushed object 5 'is dropped while moving the position of the drum crusher 11 by turning the arm 14 or driving the traveling device 12, the crushed object 5' is dispersed. Can be sprayed.

When all the crushed objects 5 that have been scooped by the bucket frame are completely crushed, the crushed material 5 is returned to the state shown in FIGS.
By repeating the above operation, the operation of crushing the object 5 can be continued.

During the crushing operation, when the material 5 to be crushed is clogged between the blade 22 and the fixed blade 25 of the drum cutter 15 and the drum cutter 15 stops rotating, the hydraulic motors 24 and 25 are temporarily turned off. By reversing, the clogged crushed material 5 can be easily removed.

According to the above embodiment, the traveling shovel 12 drives the hydraulic excavator 1 with the bucket frame bracket 16a attached to the arm 14 of the hydraulic excavator 13.
3 can be self-propelled to a required position on the asphalt stripping site, and the crushed material 5 can be scooped into the bucket frame by the operation of the arm 14 at the required position on the site. Therefore, as in the related art, the work of transporting the material to be crushed 5 by a truck or the like, the work of supplying the material to be crushed by a hydraulic shovel attached with a bucket, the dispersion and scattering of the material to be crushed into a sand and sand by a hydraulic shovel or the like It is not necessary to perform the work, and the work can be performed efficiently, and the cost required for the work can be reduced.
Furthermore, since the crushed object 5 can be dropped from the drum crusher 11 attached to the arm 14 of the hydraulic shovel 13, there is no need to use a belt conveyor or the like like a conventional stationary or self-propelled crusher, It becomes small and lightweight.

Further, by directly connecting the drum cutter 15 to the hydraulic motor 20, the drum cutter 15 can be rotated by the directly connected hydraulic motor 20 without using a gear box or the like.
Lubricating oil such as a gas box does not adhere to the material to be crushed, and the size and weight of the crusher are smaller and smaller than that of a conventional stationary or self-propelled crusher.

FIGS. 8 and 9 show a second embodiment, in which the blade 22 of the drum cutter 15 has an L-shape whose tip is bent in the rotation direction. On the other hand, a rectangular hole 30 through which the blade 22 is inserted / removed is juxtaposed in the front frame 17 which is inclined toward the drum cutter 15 and approaches the drum cutter 15.

In the second embodiment, the drum cutter 1
Since the holes 30 are provided in the front frame 17 disposed close to the nozzle 5 and the relief for the blade 22 is provided, the fixed blade 25 projecting from the front frame 17 disposed close to the front frame 17 can be brought closer to the drum cutter 15. . Therefore, the crushed material 5 cut between the fixed blade 25 and the blade 22
Can be made smaller.

FIGS. 10 and 11 show a third embodiment, in which substantially the entire bottom surface is opened without extending the bottom from the lower end of the rear frame 16, and the drum cutter 15 is opened from the lower end of the side frame 18. The blade 22 of the blade 2
2, the asphalt road surface can be peeled off.

Further, fixed blades 25A and 25B are provided on the front frame 17 in two upper and lower stages so that the blades 22 of the drum cutter 15 can be cut in two upper and lower stages.

Further, the drum crusher 1 of the third embodiment
1 is mounted on a hydraulic excavator 13 'having a four-wheel drive traveling device 12' instead of a hydraulic excavator having a traveling device on an endless track as shown in FIG. ing.

FIG. 12 shows a fourth embodiment, in which a reversing blade with a shear pin is used as a fixed blade 25 ′ protruding from the front frame 17. That is, the fixed blade 25 ′ includes a base 25 a ′ fixed to the front frame 17 and a cutting edge 25 b ′, and a shear pin 25 c ′ that cuts the base 25 a ′ and the cutting edge 25 b ′ when a load equal to or more than a predetermined value is applied. Connected and fixed. Therefore, when a load equal to or more than a predetermined value is applied by the crushed material, the shear pin 25c 'is cut and the cutting edge 25
b 'is inverted so that the load can be released.

FIGS. 13 to 18 show a fifth embodiment.
The drum crusher 11 of the fifth embodiment is the same as that of the first embodiment, except that a blade arranged on the outer peripheral surface of the drum cutter 15 is changed, and a pair of hydraulic motors 20 for rotating the drum cutter 15 are used. One-way rotation type (forward rotation only)
In that the gap adjusting member 50 is attached to the frame at the portion of the crushed material outlet 24,
1 is the main difference. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

First, on the outer peripheral surface of the drum cutter 15,
As shown in FIGS. 17 and 18, disks 55 having blades 54 projecting at 90-degree intervals are fixed to the outer periphery of the drum cutter 15 at a constant pitch in the axial direction. Two types of the disk 55 are provided, and the disk 55A has nine short blades 54a.
The disk 55B has two short blades 54a projecting opposite to each other and the two long blades 54b project orthogonally. Note that the numbers to (15) of the disks shown in FIG. 17 correspond to the numbers to (15) of the disks shown in FIG.

The above-mentioned disks 55B are arranged at intervals with two to four disks 55A therebetween in the axial direction.
In the present embodiment, the number of the disks 55B is three,
A has 13 discs, and a total of 15 discs are mounted on the drum cutter 15. These disks 55A, 55
17A and 17B, the blades 54a and 54b are sequentially contacted with the object to be crushed, and the blades 54a and 54b are sequentially contacted with the fixed blade 25 as shown in FIGS. Is to be crushed.

Each of the blades 54 is slightly inclined in the rotation direction shown by the arrow, and forms a rake face on the rotation side surface.

In the front frame 17, the lower portion 17a is inclined so as to approach the drum cutter 15 side, and the gap between the drum cutter 15 and the crushed object is gradually reduced by the blade 54 of the drum cutter 15 and the fixed blade 25. It is easy to catch and crush in between. A gap adjusting member 50 projecting from the lower end of the inclined lower portion 17a to the crushed material outlet 24.
Are attached with bolts and nuts (not shown) in a replaceable manner.

The drum cutter 15 has a long blade 54
b is projected, so that the inclined lower part 1
A hole 17b for allowing the blade 54b to escape is provided in 7a, and a protective cover 51 is attached to the outside of the hole 17b with a gap 57 therebetween.

As described above, since the long blade 54b is partially protruded from the drum cutter 15, a long crushed object can be effectively captured by the long blade 54b.
Therefore, the object to be crushed can be finely crushed by using the other blade as the short blade 54a. Further, since the arrangement angles of the adjacent blades 54 are sequentially phased, a gap is formed in the axial direction to easily catch the crushed object, and the crushed object is less likely to be caught between the blades. In addition, the object to be crushed is sequentially crushed by one of the blades 54 by the rotation of the drum cutter 15, so that the crushing operation can be performed efficiently.

Further, since the drum cutter 15 is driven to rotate only in the direction of the arrow by rotating the drum cutter 15 by the one-way rotary motor 20, accidental reverse rotation causes the crushed material to jump out of the charging port side, and Can be prevented from occurring.

Further, in this embodiment, the fixed blade 25
Is made as thin as about 12 mm as compared with the first embodiment. The thickness of the blade 54 on the drum cutter 15 side is 32
mm. As described above, when the fixed blade 25 is thinned to about 1/3 of the blade 22, a large number of the fixed blades 25 and the blades 22 of the drum cutter can be arranged within a certain length, and the crushing force can be increased accordingly.

In each of the first to fifth embodiments, the drum crusher 11 is built in the bucket-shaped frame. However, a frame having the drum crusher 11 built in at the lower end of the bucket frame may be further mounted. Good.

[0059]

As is apparent from the above description, the drum crusher of the present invention is mounted on the arm of a hydraulic excavator, and travels by a traveling device to a required position in an asphalt peeling work site to be crushed. After the object is scooped into the bucket frame by the operation of the arm and the object to be crushed is traveled to a place where the object to be crushed is dispersed and dispersed, the bucket frame is inverted at the place, and the object to be crushed is crushed upward. When the hydraulic motor is driven with the take-out port down, cutting the crushed material between the blade of the drum cutter and the fixed blade,
It can be dropped from the crushed material outlet and sprayed. In this way, the work of scooping the crushed object, moving the crushed object, cutting, dispersing, and spraying the crushed object can all be efficiently performed by the hydraulic shovel equipped with the drum crusher.

If the hydraulic motor is rotated forward or reverse and / or a reversing blade with a shear pin is used as the fixed blade, if the object to be crushed gets stuck between the drum cutter and the fixed blade and stops operating, the operation is stopped. The suspension can be easily released.

Further, since only one drum cutter is operated by the hydraulic motor, the size of the drum cutter can be reduced.

Further, since the gap between the drum cutter and the fixed blade is narrowed, there are various advantages such that the object to be crushed can be cut finely.

[Brief description of the drawings]

FIG. 1 is a front view of a state in which a drum crusher according to a first embodiment of the present invention is attached to a hydraulic shovel.

FIG. 2 is a front view of the drum crusher of the first embodiment with one side frame removed.

FIG. 3 is a plan view of the drum crusher according to the first embodiment.

FIG. 4 is a right side view of a partially broken drum crusher according to the first embodiment.

FIG. 5 is a schematic diagram illustrating a relationship between a blade and a fixed blade of the drum cutter according to the first embodiment.

FIG. 6 is a schematic view showing a modification of the arrangement of the blades of the drum cutter.

FIGS. 7A and 7B are explanatory diagrams illustrating the operation of the drum crusher according to the first embodiment.

FIG. 8 is a schematic front view of the drum crusher of the second embodiment with one side frame removed.

FIG. 9 is a right side view of the drum crusher according to the second embodiment.

FIG. 10 is a front view of the drum crusher of the third embodiment with one side frame removed.

FIG. 11 is a front view showing a hydraulic shovel to which a drum crusher according to a third embodiment is attached.

FIGS. 12A and 12B are schematic diagrams showing a fixed blade according to a fourth embodiment.

FIG. 13 is a front view of the drum crusher according to the fifth embodiment with one side frame removed.

FIG. 14 is a plan view of a drum crusher according to a fifth embodiment.

FIG. 15 is a plan view showing a state in which a part of a drum crusher according to a fifth embodiment is removed.

FIG. 16 is a right side view of the drum crusher according to the fifth embodiment.

FIG. 17 is a plan view showing an arrangement state of disks having blades to be attached to a drum cutter.

18 is a drawing showing the positions of the blades of each disk shown in FIG.

FIG. 19A is an explanatory diagram of a crushing operation by a conventional small splitter, and FIG. 19B is an explanatory diagram of a crushing operation by a stationary crusher.

FIG. 20 is an explanatory diagram of a crushing operation by a self-propelled crusher.

[Explanation of symbols]

 5,5 'Crushed object 11 Drum crusher 12 Traveling device 13 Hydraulic excavator 14 Arm 15 Drum cutter 16 Back frame 17 Front frame 18 Side frame 20 Hydraulic motor 22 Blade 23 Crushed material inlet 24 Crushed material outlet 25 Fixed blade

Claims (20)

[Claims] 1. A fixed blade, which rotatably supports one drum cutter in a frame for accommodating a material to be crushed, and alternately meshes with a blade protruding from an outer peripheral surface of the drum cutter. A drum which is mounted above a take-out port, and which is driven by a hydraulic motor fixed to the frame to rotate the drum cutter, and which is provided on the frame with a bracket which is detachably attached to an arm of a hydraulic shovel. Crusher. 2. The hydraulic motor is a one-way rotating type or a forward / reverse rotating type, is driven by a hydraulic source provided on the hydraulic excavator, and further has an output shaft of the hydraulic motor connected and fixed to the drum cutter. The drum crusher according to claim 1, wherein: 3. The drum according to claim 1, wherein the blades protruding from the outer peripheral surface of the drum cutter are arranged at regular intervals in the circumferential direction and at regular intervals in the axial direction. Crusher. 4. The drum crusher according to claim 3, wherein the blades protruding from the outer peripheral surface of the drum cutter are arranged in a staggered pattern with the phase between adjacent blades. 5. The drum crusher according to claim 3, wherein a part of the blade protruding from the outer peripheral surface of the drum cutter comprises a blade having a long protrusion amount, and the long blade is partially disposed. 6. The drum cutter is a one-way rotary type,
The drum crusher according to claim 3, wherein a blade protruding from an outer peripheral surface of the drum cutter is inclined in a rotation direction. 7. The drum cutter is a one-way rotary type,
4. The drum crusher according to claim 3, wherein the blade protruding from the outer peripheral surface of the drum cutter has an L-shape whose tip is bent in the rotation direction. 8. The fixed blade fixed to the frame has a shape in which an upper surface is inclined downward toward a tip protruding toward a drum cutter, and a crushed object on the upper surface of the fixed blade is dropped. 8. The drum crusher according to any one of items 7 to 7. 9. A fixed blade fixed to the frame is located above an outlet for crushed material and below an axial position of the drum cutter.
The drum crusher according to any one of the above items. 10. The fixed blade according to claim 1, wherein the fixed blade is attached to the frame in a plurality of upper and lower stages, and each fixed blade is arranged so as to mesh with the blade of the drum cutter. Drum crusher. 11. The drum crusher according to claim 1, wherein a predetermined gap is provided between the fixed blade and the blade of the drum cutter. 12. The frame on which the fixed blade is mounted is inclined toward the drum cutter so as to minimize the gap between the fixed blade and the outer peripheral surface of the drum cutter near the outlet of the crushed object. The drum crusher according to any one of claims 1 to 11. 13. A hole for inserting and removing a part of a blade of the drum cutter is provided in the inclined frame.
3. The drum crusher according to 2. 14. The drum crusher according to claim 13, wherein a protective cover plate is attached to the inclined frame outside a portion where the hole is provided with a gap. 15. The drum crusher according to claim 1, wherein a gap adjusting member is attached to a lower end of the frame to which the fixed blade is attached, the lower end constituting an outlet for crushed material. 16. The fixed blade fixed to the frame is a reversing blade with a shear pin, and when a predetermined value or more is added, the shear pin is cut and the cutting edge is reversed. The drum crusher according to any one of the above items. 17. The frame comprises a rear frame on which the bracket is protruded, a front frame opposed to the rear frame, and a side frame connecting the rear frame and the front frame. A part of the top surface and the bottom surface is formed to extend from both ends, the drum cutter is arranged on the back frame side of the space surrounded by these frames, and rake claws are lined up in the container intake opening on the top surface. While setting to scoop up the crushed object, while taking out the crushed object from the crushed object take-out port opened to the front frame side of the bottom surface, and
The drum crusher according to any one of claims 1 to 16, wherein a partition wall is provided by bending a tip of an upper surface protruding from the rear frame toward the drum cutter. 18. A second fixed blade meshing with a blade of the drum cutter is provided at a portion of a bottom portion extending from a lower end of the rear frame adjacent to an outlet for crushed material. 18. The drum crusher according to any one of items 17 to 17. 19. The drum crusher according to claim 1, wherein a blade coming at a lower end position of the drum cutter projects from a bottom opening of a frame so that a road surface can be scraped. . 20. The drum crusher according to claim 1, wherein the frame comprises a bucket body.