JP3208422B2 - Crusher for asphalt waste - Google Patents

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 used in road demolition and the like, and in particular, it is capable of efficiently crushing a crushed material containing sticky asphalt waste. It relates to a crusher for asphalt waste material.

[0002]

2. Description of the Related Art Conventionally, in the case of demolition of roads and the like, when crushing and splitting crushed materials including sticky asphalt waste material, a known crusher for splitting concrete waste material and the like is used as a work vehicle such as a backhoe. , And crushing work is performed with this.

[0003] Several types of crushers used in the above-mentioned construction method are known, but as a common type, generally, a fixed arm protrudes below and an arm of a work cart such as a backhoe is generally provided above. A frame having a bracket for attachment to the distal end, a pivot arm pivotally attached to a frame near the fixed arm base, a cylinder portion attached to the frame, and a rod tip attached to the pivot arm. The hydraulic cylinder is configured to open and close the rotary arm by expansion and contraction of the hydraulic cylinder, and to crush the crushed object sandwiched between the fixed arm and the hydraulic cylinder, and is represented by asphalt. It is generally well-known to use a small-sized splitter having a specially shaped crushed tooth with a slightly higher tooth height for crushing viscous materials.

[0004]

Such a crusher can be used for crushing a fragile material such as concrete waste, but the crusher is made of a material containing sticky asphalt waste. Due to the compressive action of the arm, crushed fragments adhere, stay, and accumulate around the crushed teeth attached to the arm and especially near the arm boss at the back of the arm. As the adhesion and accumulation progress, the arm cannot be closed completely due to the adhered crushed pieces, so that it becomes almost impossible to crush, the arm cannot be opened and closed, and in some cases, the machine may be damaged. Therefore, it is necessary to remove crushed pieces frequently clogged with human power by using a bur, a hammer, a rag or the like, and this removal work requires a great deal of time and labor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to provide an opposing arm opening / closing type used for crushing and breaking a crushed material containing sticky asphalt waste material. In the crushing machine, asphalt waste crushing that can automatically remove and eliminate crushed materials that accumulate and adhere to the base of the arm with the opening and closing operation of the arm, enabling efficient crushing and splitting work To provide machines.

[0006]

Therefore, the asphalt waste crusher according to the first aspect of the present invention has a fixed arm protruding below and a bracket for attaching to a tip of an arm of a work cart such as a backhoe above. A frame, a rotating arm rotatably attached to the frame near the fixed arm base, and a hydraulic cylinder having a cylinder portion attached to the frame and a rod tip attached to the rotating arm. In the crusher which opens and closes the rotating arm by the expansion and contraction of the hydraulic cylinder and crushes the object to be crushed sandwiched between the fixed arm and the small crushing object, the crushing machine is directly attached to the front surface of the arm boss serving as the rotating fulcrum of the rotating arm. At least one projection is formed upright, and at a position facing the projection on the inner surface of the fixed arm, the outer periphery of the projection is larger and the 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.

[0007] The asphalt waste material crusher according to claim 2 is provided with a frame provided with a bracket portion connected to a bogie arm of a backhoe on one end side and a fixed arm protruded on the other end side. A rotating arm whose base end side is rotatably attached to a frame near the fixed arm base so as to open and close with the fixed arm,
Further, a crushing portion having a crushing tooth group formed by projecting a plurality of crushing teeth in the direction of the fixed arm is provided on the tip of the rotating arm, and the crushing portion is sandwiched between the fixed arm and the rotating arm. An asphalt waste material crusher configured to crush an object to be crushed in the crushing section, wherein the rotating arm includes
Arm boss provided integrally on the base end side of the frame
To the arm boss.
While projecting, on said fixed arm is characterized in that a through hole which the scooping pawl is inserted.

[0008]

[0009]

A third aspect of the present invention is the asphalt waste material crusher, wherein the through-hole is configured such that the cross-sectional area gradually increases from the opening on the rotating arm side to the other opening.

[0011]

In the crusher for asphalt waste material according to the first and second aspects of the present invention, the arm boss serving as a fulcrum of the rotation of the rotating arm has the projection formed upright, and this is rotated when the arm is opened and closed. As a result, asphalt shards remaining and attached near the arm boss at the back of both arms are
Are sequentially automatically disrupted by the action as described below, scraped, or roll up like et al and removed, it is eliminated. That is, in the process of closing the arm, the crushed pieces adhering to the fixed arm are scraped off by the projections, or the crushed pieces are bent or cut or crushed between the projections and the through holes of the fixed arm opposed thereto. The crushed pieces are pushed out to the back side of the fixed arm from a through hole formed in communication from the inner side surface to the back side of the fixed arm and discharged. In the opening process of the arm, the crushed pieces adhering to the fixed arm are flipped up by the projections and peeled off, and the separated pieces are discharged from the front or left and right gaps so that there is no stagnation.

[0012]

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

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 3, the crusher 1 of the present embodiment includes: a tip of a bogie arm 31 of a backhoe 30;
A bracket 4 provided at one end of the main body frame 2 is rotatably connected to the bucket link 33 on the tip end side of the bogie arm 31 by connecting pins 34 and 34 ′, and is mounted on the upper portion of the bogie arm 31. The work position and posture are arbitrarily controlled by traveling and turning of the backhoe 30 and cylinder operation of the boom arm. With respect to the fixed arm 5 protruding forward at the end side, that is, at the lower part, the base end side of the frame 2 at the position corresponding to the base end side of the fixed arm 5 is opposed to the fixed arm 5 with the pin 8 (see FIG. 1 and FIG. 2), the rotating arm 6 rotatably supported by the shaft is opened and closed by the expansion and contraction of a 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 follows.

Next, a detailed structure of the crusher of the present embodiment will be described with reference to FIGS. The frame 2 includes a pair of left and right side plates 3 and 3 ′ and a cross beam member connecting them, a back plate extending from the upper part to the tip of the fixed arm 5 along the back surface, and facing the rotating arm 6 on the upper surface of the fixed arm 5. The whole is formed into a box shape by the inner plate 18 and the like forming the inner surface of the fixed arm,
At the tip of the fixed arm 5, a tip claw 19 is protruded forward, and the upper part of the side plates 3, 3 ′ of the frame 4 serves as a bracket part 4 for connecting to the backhoe 30. 34, a pin hole 35 for through mounting;
In the frame 2 near the base of the fixed arm 5, a pin hole for pivotally mounting the pivot arm 6 with a pin 8 and pivotally attaching the pivot arm 6 is formed. I have.

On the other hand, the rotating arm 6 has a pair of left and right vertical side plates, a horizontal girder member 12 integrally formed with the vertical side plates and forming an inner surface of the arm facing the fixed arm 5, and integrally formed on the base end side thereof. And an arm boss 11 having a pin hole penetrating in the left and right directions at the center thereof. The cross beam member 12 at the distal end side of the rotating arm 6 has a fixed arm 5 as shown in the drawing. In addition to the crushing tip teeth 20 toward the side, there is a crushing tooth group formed by protruding a plurality of crushing teeth such as a large crushing tooth 21, a small crushing tooth 22, a rebar cutting blade 23, and the like. A crushing section 25 is provided.

The arm boss 11 of the rotating arm 6 is slightly obliquely downward along the vertical direction forward on the circumference of the arm boss 11 immediately below the butted and fixed portion of the cross beam member 12 forming the inner surface of the rotating arm 6. A plurality of projections 13 each functioning as a scraping nail are formed upright,
A through hole 14 having an inner opening 14a larger than the outer periphery of the projection 13 is formed near the arm boss 11 of the inner plate 18 of the fixed arm 5 facing the projection 13. As shown in FIG. 2, the through hole 14 communicates with the back plate via a passage 16 in the fixed arm 5, and the back plate has an outer opening 14b which is larger than the inner opening 14a. ing. That is, the through hole 14 is formed by the inner opening 14 a, the passage 16, and the outer opening 14 b, and in this embodiment, the passage 16 is formed by the opening 1 of the fixed arm inner surface 18.
4a gradually spreads toward the opening 14b on the outer surface. Note that the passage 16 and the outer opening 14b 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 or larger. The shape may be arbitrary.

A through hole penetrating left and right is formed in an intermediate portion between the left and right side plates of the rotating arm 6, and a through hole extending right and left side plates 3 and 3 'is formed in an 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 connected to these through holes by pins 10 and 9, and the turning arm 6 causes the arm boss 11 to move by the expansion and contraction of the hydraulic cylinder 7. The pivot arm 6 pivots about a pin 8, and the tip of the pivot arm 6 is configured to open and close with respect to the fixed arm 5. The protruding protrusion 13 is configured so that a tip end thereof protrudes and retracts from an 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 rotating arm 6, and the backhoe 30 is operated to operate the crushed material such as construction waste material between the fixed arm 5 and the rotating arm 6. When the hydraulic cylinder 7 is extended and both arms 5 and 6 are closed, the crushed material is
The crushed pieces that have been crushed by the crushing teeth 20, 21, 22 and the projections 13, and crushed finely penetrate through the gap between the front and the left and right of the arms 5, 6 and the inner side surface 18 of the fixed arm 5 toward the backboard. It is discharged through the passage 6 and the like. Again, both arms 5,
6 is opened to add the crushed object, and the same operation is repeated to sequentially crush the crushed object to perform the subdivision work.

By the way, if the rotating arm 6 has the projection 13
In the case of a conventional crusher not provided with
When the arms 5 and 6 are closed, the gap between the inner surface 18 of the fixed arm 5 and the inner surface 12 of the rotating arm 6 becomes extremely narrow in the vicinity of the arm boss 11 at the back of 6, and the crushed material becomes sticky. In the case of the asphalt with the asphalt, the crushed pieces of the crushed material in the vicinity thereof are compressed by receiving a large pressing force by the two arms 5 and 6 before being discharged from the left or right or the front gap, and the crushed pieces are separated from each other. , 6 inner surface plates 12, 1
In addition to the adhesion and accumulation of the crushed pieces due to the repetition of the crushing operation, the crushed pieces are adhered and hindered, and the opening and closing of the arms are obstructed. An excessive reaction force acting on the pin 8 may eventually lead to an accident that damages the crusher.

However, in the crusher of the above embodiment, the crushed pieces staying near the base of the rotating arm 6 are compressed by the pressing forces of both arms 5 and 6 as described above, and the inner side surfaces 2 and 8 of each arm are used. However, the projection 13 rotates with the opening / closing operation of the rotating arm 6, and the tip of the projection 13 projects into and out of the through hole 14 formed in the inner side surface 18 of the fixed arm 5. Fragments that stay or adhere around the base end side of the arm 6, that is, near the center of rotation, are bent and crushed or scraped off by the projection 13, and when the arms 5 and 6 open, the projection 13 The crushed pieces with the attached tips are pulled up and separated, and thus the crushed pieces are released and discharged.

Further, in this crushing machine, the projection 13 is formed on the arm boss 11, which hinders the crushing, and the crushed pieces are caught or retained near the arm boss 11 at the back of the arms 5, 6. The projections 13 also help prevent shards from staying.

Although not shown in the drawings, in the second embodiment, the projection 13 does not directly protrude from the arm boss 11, but the protrusion 13 of the cross beam member 12 forming the inner side surface of the rotating arm 6. In the vicinity of the arm boss 11, that is, between the arm boss 11 and the crushing portion 25, a downwardly projecting protrusion is provided in parallel with the arm boss 11. May be configured to appear and disappear in this case, and in this case, the operation is the same as in the above-described embodiment. Although the protrusion 13 has a configuration in which the tip thereof protrudes and retracts in the inner opening 14a in accordance with the opening / closing operation of the rotating arm 6, this is such that the projection 13 remains immersed even when the arms 5 and 6 are opened to the maximum. The configuration may be any. When such a configuration is adopted, the effect can be further remarkable by forming irregularities on the surface of the protrusion 13 and scraping out the crushed pieces attached thereto.

[0024]

In the crusher for asphalt waste material according to the first aspect, a projection is formed upright on the arm boss of the rotating arm and a through hole is provided on the fixed arm side at a position facing the projection. Fragments are rarely approached near the arm boss by being hindered by this projection, and even if 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 they are peeled and discharged, they do not stick or accumulate, so that there is no need to interrupt the work and remove them manually, which not only reduces the burden on the operator, but also allows the crushing work to be performed efficiently. Further, since the crushed pieces are not fixed or accumulated around the arm boss, no excessive force is applied to the arm pins and the arms of the crusher, and the crusher can be prevented from being damaged due to the fixed crushed pieces. .

In the crusher for asphalt waste material according to the second aspect , the scraping claw is provided near the center of rotation of the rotating arm , as in the first aspect. It is possible to automatically remove and remove the crushed material that adheres and stays on the side according to the opening / closing operation by the rotating arm.

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

[Brief description of the drawings]

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

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

FIG. 3 is a view showing a state where one embodiment of the crusher is attached to a backhoe.

[Explanation of symbols]

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

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B02C 1/02-1/10 E04G 23/08

Claims (3)

(57) [Claims] 1. A frame having a fixed arm protruding below and a bracket for attaching to a tip of an arm of a work cart such as a backhoe above and a frame rotatably mounted on a frame near the base of the fixed arm. And a hydraulic cylinder having a cylinder portion attached to the frame and a rod end portion pivoted to the rotating arm. The hydraulic arm expands and contracts to open and close the rotating arm, and the fixed In a crusher for crushing a crushed object sandwiched between the arm and a crushing machine, one or more protrusions are formed upright on a front surface of an arm boss serving as a rotation fulcrum of the rotation arm, and the inner surface of a fixed arm is formed. A through hole is provided at a position opposed to the protrusion, the through hole being larger than the outer periphery of the protrusion and communicating with the rear surface of the fixed arm. A crusher for asphalt waste material, characterized in that the tip of the asphalt protrudes and retracts from the through hole. 2. A bracket portion connected to a bogie arm or the like of a backhoe is provided on one end side, and an opening and closing operation is performed between the fixed arm and a frame having a fixed arm protruding from the other end side. A pivot arm rotatably attached to a frame near the base of the fixed arm. The pivot arm further has a plurality of crushing teeth protruding in the direction of the fixed arm. A crushing unit having a crushing tooth group is provided on the tip side thereof, and a crushing machine for asphalt waste material configured to crush the crushed object sandwiched between the fixed arm and the rotating arm by the crushing unit, The rotating arm is provided by an arm boss that is provided integrally on the base end side.
Attach it to the frame and
A crusher for asphalt waste material, characterized in that the fixed arm has a through-hole through which the scraping claw is inserted, while being provided on the mboss . Wherein said through hole, asphalt of claim 1 or claim 2, characterized in that it has gradually adapted to the cross-sectional area widens toward the opening of the pivot arm to the other opening <br/> Crusher for waste materials.