JPH11210237A - Crushing machine with magnet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To crush the mass of reinforced concrete or the like without altering the posture of a crushing machine, and enhance the efficiency of the demolishing work through cutting, attraction, and selective collection of iron bars and the like by disposing magnetic units on the back surface of the crushing part. SOLUTION: A crushing machine 1 attached to the arm distal end of a construction vehicle such as a hydraulic shovel and used for demolishing work or the like is provided with a movable frame 3 via a pin 4 on its main frame 2 for open and close operation by a hydraulic cylinder 5 in order to crush a matter C to be crushed between crush parts 2A, 3A. Then, cutters 13, 14 are set at the base end side of the crush parts 2A, 3A of the crushing machine 1 to render cutting or the like of iron bars possible, and magnetic units 10, 11 are put on the back surface of the crush parts 2A, 3A and magnetization current is applied thereto by magnetic wiring 12. Accordingly, without altering the posture of the crushing machine, the matter C to be crushed is compressed before cutting, attracting, and selective collecting of iron bars, thereby raising the working efficiency of demolishing work. Besides, the magnetic unit 10, 11 are not brought in contact with the matter to be crushed directly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher mounted on a construction vehicle such as a hydraulic power shovel and used for dismantling constructions, and more particularly to crushing of crushed objects such as reinforced concrete. The present invention relates to a crusher with a magnet capable of adsorbing a metal such as.

[0002]

2. Description of the Related Art In a conventional magnet crusher, as shown in FIG. 6, a movable frame 3 is rotatably supported on a main frame 2 by a pin 4, and a movable frame 3 is provided between the main frame 2 and the movable frame 3. A hydraulic cylinder 5 for opening and closing operation is mounted, and a crushing portion 3A of the movable frame 3 and a main frame 2 opposed thereto
In the crusher 1 configured to crush the object to be crushed between the crushing unit 2A and the crushing unit 2A on the front end side of the main frame 2, a magnet device 6 is provided near the bottom of the pin 4 on the bottom surface 2B of the main frame 2, and a metal such as a reinforcing bar There is one that can perform adsorption.

[0003] When the building is dismantled using the crusher 1, the base end of the main frame 2 of the crusher 1 is attached to the distal end of the arm 8 of the construction vehicle 7 with the mounting pin 9.
The object to be crushed is pinched and crushed between the crushing section 2A of the main frame 2 and the crushing section 3A of the movable frame 3. At this time, the working posture of the crusher 1 is generally such that the base end side of the main frame 2 is directed upward and the distal ends of the main frame 2 and the movable frame 3 are directed downward as shown in FIG.

[0004] Further, when performing the adsorption of the rebar or the like, the crusher 1 is rotated so that the distal ends of the main frame 2 and the movable frame 3 face rearward (toward the construction vehicle 7) as shown in FIG. 6 is located below.

[0005]

However, this crusher 1
In such a case, since the posture must be changed between when crushing the object to be crushed and when adsorbing the metal, the operation is troublesome, time is required for rotation, and the work efficiency is reduced.

Further, since the magnet device 6 is installed below the pins 4 on the bottom surface 2B of the main frame 2, when the crusher 1 is placed in the suction posture, the reinforcing bars and the like are blocked by the tip of the crusher 1. It becomes difficult for the operator to see, and positioning when performing suction is difficult.

Further, the crusher 1 has a drawback that the distance from the construction vehicle 7 to the magnet device 6, ie, the working radius, is reduced because the distal ends of the main frame 2 and the movable frame 3 are directed rearward in the suction posture.

The present invention solves such a problem in a crusher with a magnet, and it is not necessary to change the posture between crushing and suctioning, so that the operation is easy and the working efficiency is improved. A magnet with a magnet that can increase the working radius from the construction vehicle to the magnet device when performing the suction, makes it possible for the metal such as the reinforcing bar to be easily seen by the operator when performing the suction, and to perform the positioning of the magnet device accurately when performing the suction. It is an object to provide a crusher.

[0009]

According to the present invention, in order to solve the above-mentioned problems, a movable frame is rotatably supported on a main frame, and a crushing portion of the movable frame and a crushing portion on a tip end side of the main frame facing the movable frame are provided. In a crusher configured to perform crushing between the unit and the magnet device, the back of the crushing unit of the main frame or the back of the crushing unit of the movable frame,
Or it is provided in both.

When a building is dismantled using this crusher, the base end of the main frame of the crusher is attached to the tip of the arm of the construction vehicle, and the crushed object is moved with the crushing section of the main frame. Crushing and crushing between the crushing part of the frame. At this time, the working posture of the crusher, the base end is upward,
The leading ends of the main frame and the movable frame are directed downward.

[0011] In this crusher, since the magnet device is provided on the back side of the crushing section, the metal such as a reinforcing bar can be adsorbed in the same posture as when crushing. Therefore, there is no need to change the posture between when performing crushing and when performing suction,
The operation is easy and work efficiency can be improved.

Further, since it is not necessary to turn the crusher backward when performing suction, the positioning of the magnet device can be performed accurately so that the reinforcing bar and the like can be easily seen by the operator, and the working radius from the construction vehicle to the magnet device can be increased. be able to.

[0013]

FIG. 1 is a side view of a crusher with a magnet according to an embodiment of the present invention mounted on a construction machine, and FIG. 2 is a crusher with a magnet showing an example of an arrangement of magnet devices. FIG. 3 is an explanatory view of the arrangement of the magnet device at the distal end of the main frame, FIG. 4 is an explanatory view of the arrangement of the magnet device at the distal end of the movable frame, and FIG. 5 is an explanatory view of the working posture when the working radius is increased. It is.

Here, in the crusher 1, a movable frame 3 is rotatably supported by pins 4 on a main frame 2.
A hydraulic cylinder 5 for opening and closing operation is mounted between the main frame 2 and the movable frame 3. This crusher 1
Means that the base end of the main frame 2 is the arm 8 of the construction vehicle 7
Is attached to the front end of the base with a mounting pin 9. The main frame 2 and the movable frame 3 have a shell structure,
The crushed material C is crushed between the crushing portion 3A of the movable frame 3 and the crushing portion 2A on the distal end side of the main frame 2 opposed thereto.

Further, cutters 13 and 1 are provided at the base end sides of the crushing portion 2A of the main frame 2 and the crushing portion 3A of the movable frame 3.
4 are provided to cut metal such as concrete reinforcing bars.

On the back of the crushing section 2A of the main frame 2, two sets of magnet devices 10 are arranged in parallel at predetermined intervals, and on the back of the crushing section 3A of the movable frame 3, two sets of magnet devices 11 are also provided. They are arranged in parallel. This magnet device 1
Magnet wiring 12 is connected to 0 and 11, and electricity for excitation is supplied from the construction machine 7 side.

When performing the crushing operation, the arm 8 of the construction machine 7 is moved, and the crusher 1 is set with the base end side of the main frame 2 upward as shown in FIG. The crushed object C is positioned so that the tip side faces downward. When the operator switches the control valve of the hydraulic system of the construction vehicle 7 from the opening state in FIG. 1, the hydraulic oil is supplied to the hydraulic cylinder 5 and the hydraulic cylinder 5 extends.
The movable arm 3 rotates clockwise in FIG. 2 around the pin 4 to move the object C to be crushed as shown in FIG.
Between the crushing portion 2A of the movable frame 3 and the crushing portion 3A of the movable frame 3. After crushing, the hydraulic cylinder 5 is shortened and returned to the open state of FIG.

When there is a metal such as a reinforcing bar in the crushed material, the metal is selectively collected from the crushed material C. At this time, the leading ends of the main frame 2 and the movable frame 3 are positioned at a position where metal exists, and the magnet devices 10 and 11
Is energized to excite the metal. The adsorbed metal is
After moving the arm 8 to a predetermined position, the magnet device 1
0 and 11 are demagnetized to be separated and recovered.

Since the crushing machine 1 has the magnet devices 10 and 11 on the back of the crushing sections 2A and 3A, the metal such as a reinforcing bar can be adsorbed in the same posture as when crushing is performed. Therefore, it is not necessary to change the posture between the time of crushing and the time of suction, and the operation is easy and the work efficiency can be improved.

Further, since it is not necessary to turn the crusher 1 backward when performing the suction, the magnet devices 10 and 11 can be accurately positioned so that the reinforcing bar and the like can be easily seen by the operator. Since the suction operation can be performed with the arm 8 of the construction vehicle 7 extended and the front end side of the crusher 1 facing forward as shown in FIG. 5, the working radius from the construction vehicle 7 to the magnet devices 10 and 11 can be increased. And adsorption over a wide range becomes possible.

When crushing reinforced concrete or the like, if the magnet devices 10 and 11 having a sufficient attraction force are used in an excited state, the concrete will break down and fall, and the reinforcing bar will be attracted and will remain between the crushing sections 2A and 3A. , Construction machinery 7
The arm 8 can be moved to collect the rebar.

The magnet units 10 and 11 include a crushing unit 2A inside the shells of the main frame 2 and the movable frame 3,
Since it is arranged on the back of the 3A, there is no danger of breakage due to direct contact with a crushed object such as concrete or a metal such as a reinforcing bar during work.

[0023]

As described above, in the crusher with magnet according to the present invention, since the magnet device is provided on the back of the crushing section, the metal such as a reinforcing bar can be adsorbed in the same posture as when crushing. Therefore, it is not necessary to change the posture between crushing and suctioning, so that the operation is easy and the working efficiency can be improved.

In addition, since it is not necessary to turn the crusher backward when performing the suction, the rebar or the like can be easily seen by the operator and the magnet device can be accurately positioned, and the working radius from the construction vehicle to the magnet device can be increased. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of a state in which a crusher with a magnet according to an embodiment of the present invention is mounted on a construction machine.

FIG. 2 is a side view of a crusher with a magnet showing an example of an arrangement of a magnet device.

FIG. 3 is an explanatory diagram of an arrangement of a magnet device at a leading end of a main frame.

FIG. 4 is an explanatory diagram of an arrangement of a magnet device at a distal end portion of a movable frame.

FIG. 5 is an explanatory diagram of a working posture when a working radius is increased.

FIG. 6 is a side view showing a state in which a conventional magnet crusher is mounted on a construction machine.

FIG. 7 is an explanatory view of a working state of the conventional magnet crusher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher 2 Main frame 2A Crush part 3 Movable arm 3A Crush part 4 Pin 5 Hydraulic cylinder 7 Construction vehicle 8 Arm 9 Mounting pin 10 Magnet device 11 Magnet device 12 Magnet wiring 13 Cutter 14 Cutter C

Claims (1)

[Claims] 1. A crusher configured to rotatably support a movable frame on a main frame and perform crushing between a crushing portion of the movable frame and a crushing portion on the distal end side of the main frame opposed thereto. A crusher with a magnet, wherein the magnet device is provided on the back of the crushing unit of the main frame, the back of the crushing unit of the movable frame, or both.