JPH08266917A - Crusher for asphalt waste material - Google Patents

Abstract

PURPOSE: To efficiently crush an asphalt waste material by removing a matter to be crushed remaining on and adhering to an arm base section in a crusher for crushing the material to be crushed including a viscous asphalt waste material clamped by the arm by opening and closing the opposite arm by means of a hydraulic cylinder. CONSTITUTION: More than one of protrusion 13 are formed directly or almost in contact with on the front face of an arm boss 11 as a rotating support of a rotating arm 6 attached pivotally on a frame 2 near a fixed arm 5 base section protruded from the frame 2. A through-hole 14 larger than the contour of the protrusion 13 and running through toward the rear face of the fixed arm 5 is formed on the position opposite to the protrusion 13 on the fixed arm 5 side, and the end of the protrusion 13 is set to appear and disappear toward the through-hole 14 following the opening and closing the rotating arm. A passage of the through-hole 14 is formed to be widened toward the rear face side of the fixed arm 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher for asphalt waste materials used in road dismantling and the like, which is capable of efficiently crushing a crushed object containing an asphalt waste material having stickiness into small pieces. The present invention relates to a crusher for asphalt waste materials.

[0002]

2. Description of the Related Art Conventionally, when crushing and shredding an object to be crushed containing sticky asphalt waste materials in road dismantling, etc., a known crusher for shredding concrete waste materials is used as a work trolley such as a backhoe. It is attached to and is being crushed.

Although several forms are known as a crusher used in the above-mentioned construction method, generally, as a common form, a fixed arm is projected downward and an arm of a work truck such as a backhoe is provided above. A frame having a bracket for attaching to the tip, a rotating arm rotatably attached to the frame near the fixed arm base, a cylinder part on the frame, and a rod tip part on the rotating arm. The hydraulic cylinder is used to open and close the rotary arm by expansion and contraction of the hydraulic cylinder to crush the object to be crushed sandwiched between the fixed arm and is represented by asphalt. For crushing viscous materials, it is generally well known to use a crushing machine with crushing teeth having a special shape with a slightly high tooth length.

[0004]

By the way, such a crusher can be used without difficulty for crushing a fragile material such as a concrete waste material, but in the case of a material containing an adhesive asphalt waste material, Due to the compression action of the arm, crushed pieces are attached, accumulated, and accumulated around the crushing teeth attached to the arm, especially near the arm boss at the back of the arm, and even if a crushing tooth with a high tooth length is attached, When the adhesion and accumulation proceed, the fixed crushed pieces do not close the arm completely, which makes it almost impossible to crush, the arm cannot be opened or closed, and in some cases, the machine may be damaged. Therefore, it is necessary to use a burr, a hammer, a chisel or the like to manually remove the crushed pieces that have been frequently clogged, and this removal operation requires a great deal of time and labor.

The present invention has been made in order to solve the above-mentioned conventional drawbacks, and an object thereof is to open and close an opposed arm used for crushing and shredding an object to be crushed containing adhesive asphalt waste material. Crusher for asphalt waste that can be efficiently removed and eliminated from the crusher that accumulates and adheres to the base of the arm as the arm opens and closes, enabling efficient crushing and shredding work. To provide a machine.

[0006]

Therefore, the crusher for waste asphalt according to claim 1 has a fixed arm projecting downward and a bracket for mounting on the upper end of the arm of a work truck such as a backhoe. A frame, a rotary arm rotatably attached to the frame near the fixed arm base, and a hydraulic cylinder in which a cylinder part is pivotally mounted on the frame and a rod tip part is pivotally mounted on the rotary arm. In the crusher that opens and closes the rotating arm by expansion and contraction of the hydraulic cylinder to crush and crush the object to be crushed sandwiched between the fixed arm and the crushing object, the boss is directly attached to the front surface of the arm boss that serves as the fulcrum of the rotating arm. One or more protrusions are formed upright, and at a position facing the protrusion on the inner surface of the fixed arm, the protrusion is larger than the outer contour of the protrusion and on the rear surface of the fixed arm. Only a through hole which communicates with the tip of the protrusion with the opening and closing of the pivoting arm is characterized by being configured to retractable relative to said through-hole.

The crusher for waste asphalt according to a second aspect of the present invention is provided with a frame having a bracket portion connected to a truck arm of a backhoe or the like at one end side thereof, and a fixed arm projectingly provided at the other end side thereof, The rotating arm is rotatably attached to a frame near the base of the fixed arm so as to open and close with the fixed arm, and the rotating arm has a plurality of fracturing teeth. A crushing portion having a crushing tooth group protruding in the direction of the fixed arm is provided at the tip end side, and the crushed object sandwiched between the fixed arm and the rotating arm is crushed by the crushing portion. In the crusher for asphalt waste material, the rotating arm has a scraping claw projecting toward the fixed arm toward the base end side from the shredding part, while the fixing claw is inserted through the scraping claw. Having a through hole It is a symptom.

Further, in the crusher for asphalt waste material according to a third aspect of the present invention, the rotating arm is attached to the frame by an arm boss integrally provided on the base end side thereof.
The raking claw is characterized by being provided on the arm boss.

The crusher for asphalt waste material according to claim 4 is
The rotating arm is attached to the frame by an arm boss integrally provided on the base end side thereof, and the scraping claw is provided so as to project between the arm boss and the crushing portion.

The crusher for asphalt waste material according to claim 5 is
The through hole is characterized in that the cross-sectional area gradually increases from the opening on the rotating arm side toward the other opening.

[0011]

In the crusher for waste asphalt according to the above-mentioned claim 1, the arm boss serving as a fulcrum of the rotation of the rotating arm has the projection formed upright, so that it rotates together with the opening and closing of the arm. The asphalt crushed pieces that have accumulated and attached near the arm bosses behind both arms are automatically crushed, scraped off, or rolled up to be removed and eliminated by the following actions. That is, during the arm closing process, the crushed pieces adhering to the fixed arm are scraped off by the projections, or the crushed pieces are bent or cut between the projections and the through-holes of the fixed arm facing the cutouts or crushed. Then, the crushed pieces are pushed and discharged to the rear surface side of the fixed arm from the through hole formed so as to communicate from the inner side surface of the fixed arm toward the rear surface. Further, in the process of opening the arm, the crushed pieces attached to the fixed arm are flipped up by the projections and separated, and the released pieces are discharged from the front or left and right gaps, and are not retained.

Further, in the crusher for asphalt waste material according to claims 2 to 4, since the scraping claw and the through hole are provided in the vicinity of the center of rotation of the rotating arm, the base end of the rotating arm or the fixed arm. It is possible to automatically remove and eliminate the crushed object that adheres to the side and stays in accordance with the opening / closing operation of the rotating arm.

Further, in the crusher for asphalt waste material according to the fifth aspect, the object to be crushed to be removed can be smoothly discharged without being clogged in the middle of the through hole.

[0014]

Embodiments of the present invention will be described below with reference to FIGS. As shown in FIG. 3, the crusher 1 of the present embodiment has a tip of a truck arm 31 of a backhoe 30,
The bracket portion 4 provided on one end side of the main body frame 2 is rotatably connected to the bucket link 33 on the tip end side of the trolley arm 31 by connecting pins 34 and 34 ', and is attached to the upper portion of the trolley arm 31. The bucket cylinder 32 is swung back and forth by expansion and contraction, and the working position and posture can be arbitrarily controlled by the traveling and turning of the backhoe 30 and the cylinder operation of the boom arm. An end side, that is, a fixed arm 5 projecting forwardly at a lower portion thereof, is opposed to the fixed arm 5, and a frame 8 at a position corresponding to a base end side of the fixed arm 5 is provided with a pin 8 (see FIG. 1 and FIG. 2), the rotary arm 6 rotatably supported is opened and closed by expanding and contracting the hydraulic cylinder 7 built in the frame 2, and the crushed object sandwiched between the two arms 5, 6 is crushed. It is configured as

Next, the detailed structure of the crusher of this embodiment will be described with reference to FIGS. 1 and 2. The frame 2 includes a pair of left and right side plates 3 and 3'and a cross beam member connecting these side plates, a back plate extending from the upper part along the back surface to the tip of the fixed arm 5, and the upper surface of the fixed arm 5 faces the rotating arm 6. Then, the inner plate 18 and the like forming the inner surface of the fixed arm are formed into a box shape as a whole,
A tip claw 19 is provided on the tip of the fixed arm 5 so as to project forward, and upper portions of the side plates 3 and 3 ′ of the frame 4 serve as a bracket portion 4 for connecting to the backhoe 30, and the connecting pin 34, 34, through which the pin hole 35 is attached,
35, is formed through, and the frame 2 near the base of the fixed arm 5 is provided with a pin hole for pivotally mounting the rotary arm 6 with a pin 8 for pivotal attachment. There is.

On the other hand, the rotating arm 6 includes a pair of left and right vertical side plates, a cross beam member 12 which integrally forms an inner side surface of the arm facing the fixed arm 5 side, and is integrally formed on the base end side thereof. It is fixed to the arm boss 11 having a pin hole penetrating left and right in the center, and the transverse beam member 12 on the tip side of the rotating arm 6 is fixed to the fixed arm 5 as shown in the figure. In addition to the tip teeth 20 for crushing toward the side, it has a crushing tooth group formed by projecting a plurality of crushing teeth such as a crushing tooth 21 for large crushing, a crushing tooth 22 for small crushing, and a cutter blade 23 for cutting rebar A crushing unit 25 is provided.

Then, the arm boss 11 of the rotating arm 6 is provided on the circumference of the arm boss 11 immediately below the butting and fixing portion of the transverse beam member 12 forming the inner side surface of the rotating arm 6, and slightly downward along the vertical direction. A plurality of protrusions 13 each functioning as a scraping claw are formed upright toward
A through hole 14 having an inner opening 14 a larger than the outer contour of the protrusion 13 is formed near the arm boss 11 of the inner plate 18 of the fixed arm 5 facing the protrusion 13. As shown in FIG. 2, the through hole 14 communicates with the back plate side via the passage 16 in the fixed arm 5, and has an outer opening 14b larger than the inner opening 14a on the back plate side. ing. That is, the through hole 14 is formed by the inner opening 14a, the passage 16 and the outer opening 14b, and in this embodiment, the passage 16 is the opening 1 on the inner surface 18 of the fixed arm.
It gradually expands from 4a toward the opening 14b on the outer side surface. The passage 16 and the outer opening 14b may have the same inner dimensions as the inner opening 14a, and the passage 16 may be a parallel passage, and the inner dimensions do not become narrower toward the outer opening 14b and are equal to or larger than each other. The shape is free.

Further, a through hole penetrating left and right is formed in an intermediate portion of the left and right side plates of the rotating arm 6, and a through hole extending through the left and right side plates 3, 3'is also formed in the upper rear portion of the frame 2. The piston rod 7b of the hydraulic cylinder 7 and the cylinder clevis of the cylinder portion 7a are pivotally attached to these through-holes by pins 10 and 9, and when the hydraulic cylinder 7 expands and contracts, the rotary arm 6 attaches to the arm boss 11. It is configured so that it pivots around a pivotally supported pin 8 and the tip of the pivot arm 6 opens and closes with respect to the fixed arm 5. As the pivot arm 6 opens and closes, the pivot arm 6 moves toward the base end side. The tip of the protruding projection 13 is configured to project into and retract from the inner opening 14 a formed in the inner surface 18 of the fixed arm.

In the crusher 1 of the above embodiment, the hydraulic cylinder 7 is contracted to open the rotary arm 6, and the backhoe 30 is operated to provide a space between the fixed arm 5 and the rotary arm 6 to be crushed such as construction waste. When the hydraulic cylinder 7 is extended and both arms 5 and 6 are closed, the crushed object is crushed.
The crushed pieces that have been crushed by the crushing teeth 20, 21, 22 and the projection 13 of 5 and crushed finely penetrate through the gap between the front and the left and right of both arms 5, 6 and the inner surface 18 of the fixed arm 5 to the back plate side. It is discharged through the passage 6 or the like. Again both arms 5,
6 is opened to hold the object to be crushed, and the same operation is repeated to crush the object to be crushed one by one to perform the small-division work.

By the way, if the rotation arm 6 has a protrusion 13
In the case of a conventional crusher that is not provided with both arms 5,
In the vicinity of the arm boss 11 in the back of 6, when both arms 5 and 6 are closed, the gap between the inner side surface 18 of the fixed arm 5 and the inner side surface 12 of the rotating arm 6 becomes extremely narrow, and the crushed material becomes sticky. In the case of the one containing asphalt, the crushed pieces of the surrounding crushed material are compressed by a large pressing force by both arms 5 and 6 before being discharged from the gaps on the left and right or in the front, and the crushed pieces are broken by each arm 5. , 6 inner side plates 12, 1
No. 8 and the repeated crushing work causes the crushed pieces to be deposited and deposited and stick to each other to hinder the opening and closing of the arms, or the arms 5 and 6 cannot be closed completely to reduce the crushing efficiency. The reaction force acting on the pin 8 may become excessive and may eventually lead to an accident that damages the crusher.

However, in the crusher of the above-described embodiment, the crushed pieces retained near the base of the rotating arm 6 are compressed by the pressing force of both arms 5 and 6 as described above, and the inner side surfaces 2 and 8 of each arm are compressed. Even if it adheres to the surface of the fixed arm 5, the protrusion 13 rotates with the opening / closing operation of the rotating arm 6, and the tip of the protrusion 13 appears in and out of the through hole 14 formed in the inner side surface 18 of the fixed arm 5. The crushed pieces that stay or adhere to the vicinity of the base end side of the arm 6, that is, near the center of rotation are bent and crushed by this projection 13 or scraped off, and when both arms 5 and 6 open, The crushed piece with the tip attached is pulled up and peeled off. In this way, the crushed piece is released and discharged.

Further, in this crusher, the protrusion 13 is formed on the arm boss 11 so as to interfere with the protrusion, and the crushed pieces are caught or accumulated in the vicinity of the arm boss 11 at the back of both arms 5 and 6. The protrusion 13 also serves to prevent the crushed pieces from staying.

Although not shown in the drawings, in the second embodiment, the protrusion 13 does not directly project from the arm boss 11 but the transverse beam member 12 forming the inner side surface of the rotating arm 6 is described above. In the vicinity of the arm boss 11, that is, between the arm boss 11 and the crushing portion 25, a downward projection is formed in parallel with the arm boss 11, and the tip of the projection 13 is opened and closed with the opening of the rotary arm 6 inside the fixed arm 5. It may be configured to appear in and out of, and in this case, the same operation as in the above-mentioned embodiment is performed. Further, the projection 13 is configured such that the tip thereof projects into and out of the inner opening 14a in accordance with the opening / closing operation of the rotating arm 6, but this remains to be projected even when both arms 5 and 6 are opened to the maximum extent. It may have any configuration. When such a configuration is adopted, the effect can be made more remarkable by forming irregularities on the surface of the protrusion 13 and scraping out the crushed pieces attached by this.

[0024]

In the crusher for asphalt waste material according to the first aspect of the present invention, the arm boss of the rotating arm is provided with a protrusion in a standing manner, and the fixed arm is provided with a through hole at a position facing the protrusion. The crushed pieces are less likely to get close to the arm boss due to this projection, and even if the crushed pieces stay or adhere near the arm boss, they are automatically crushed by the opening and closing action of the arm during the crushing work, or Since it is peeled off and discharged, there is no sticking or accumulation, and there is no need to interrupt the work and remove it manually, which not only reduces the burden on the worker, but also allows the crushing work to be performed efficiently. Further, since the crushed pieces are not fixed and accumulated around the arm boss, no excessive force is applied to the arm pins or arms of the crusher, and the damage trouble of the crusher caused by the fixed crushed pieces can be avoided. .

Further, in the asphalt waste material crusher of the second to fourth aspects, since the scraping claw and the through hole are provided in the vicinity of the rotation center of the rotation arm, the base end of the rotation arm or the fixed arm. It is possible to automatically remove and eliminate the crushed object that adheres to the side and stays in accordance with the opening / closing operation of the rotating arm.

Further, in the crusher for asphalt waste material according to the fifth aspect, the object to be crushed to be removed can be smoothly discharged without being clogged in the middle of the through hole.

[Brief description of drawings]

FIG. 1 is an external view of an embodiment of a crusher according to the present invention as seen obliquely from the front.

FIG. 2 is a cross-sectional view of an embodiment of the crusher, and a chain double-dashed line shows a state when the arm is closed.

FIG. 3 is a view showing a state in which an embodiment of the crusher is attached to a backhoe.

[Explanation of symbols]

 2 Frame 4 Bracket part 5 Fixed arm 6 Rotating arm 7 Hydraulic cylinder 7a Cylinder part 7b Rod 11 Arm boss 13 Protrusion (scraping claw) 14 Through hole 14a Inner opening 14b Outer opening 18 Fixed arm inner plate 20 Tip tooth 21 For large split Crushing tooth 22 Crushing tooth for small division 23 Cutter blade for cutting rebar 25 Crushing section 30 Backhoe 31 Cart arm

Claims (5)

[Claims] 1. A frame having a fixed arm projecting downward and a bracket having a bracket for attaching to the arm tip of a work trolley such as a backhoe, and a frame rotatably attached to a frame near the fixed arm base. And a hydraulic cylinder in which a cylinder portion is pivotally attached to the frame and a rod tip portion is pivotally attached to the pivot arm, and the pivot arm is opened and closed by expansion and contraction of the hydraulic cylinder to fix the fixed arm. In a crusher for crushing and shredding an object to be crushed sandwiched between an arm and a boss, one or more projections are directly formed upright on the front surface of an arm boss that serves as a fulcrum of rotation of the oscillating arm, and the inner surface of the fixed arm A through hole, which is larger than the outer contour of the protrusion and communicates toward the rear surface of the fixed arm, is provided at a position facing the protrusion, and the protrusion is formed when the rotating arm is opened and closed. A crusher for asphalt waste material, characterized in that the tip of the slab is configured to project and retract with respect to the through hole. 2. A bracket portion connected to a bogie arm of a backhoe or the like is provided on one end side thereof, and an opening / closing operation is performed between the frame on which a fixed arm is projectingly provided on the other end side and the fixed arm. It comprises a rotating arm rotatably attached to the frame in the vicinity of the fixed arm base so that the rotating arm has a plurality of crushing teeth protruding in the fixed arm direction. A crushing machine for asphalt waste material, comprising a crushing section having a crushing tooth group on its tip side, and crushing an object to be crushed sandwiched between the fixed arm and the rotating arm at the crushing section, The rotating arm is provided with a raking claw projecting toward the fixed arm toward the base end side of the crushing portion, while the fixed arm is provided with a through hole through which the raking claw is inserted. Crusher for asphalt waste materials. 3. The rotating arm is attached to the frame by an arm boss that is integrally provided on the base end side of the rotating arm, and the scraping claw is provided so as to project from the arm boss. Crusher for asphalt waste materials. 4. The rotating arm is attached to the frame by an arm boss integrally provided on the base end side thereof, and the scraping claw is provided so as to project between the arm boss and the crushing portion. Claim 2 or claim 3 characterized
Crusher for asphalt waste materials. 5. The asphalt waste material according to any one of claims 1 to 4, wherein the through-hole has a cross-sectional area gradually increasing from the opening on the side of the rotating arm toward the other opening. Crusher.