JP3017584U - Crusher - Google Patents

Abstract

(57) [Summary] [Purpose] To crush reinforced concrete structures and separate concrete fragments and reinforced fragments generated by the crushing. [Composition] The crushing blades 4 and 5 are opened and closed by driving the fluid cylinder 8 to crush the reinforced concrete structure. Due to crushing, concrete fragments and reinforcing bar fragments are generated in a mixed state.
An electric current is supplied to the electromagnet 3 to magnetize it, and only the reinforcing bar fragments are adsorbed. The power supply to the electromagnet 3 is stopped at a place other than the crushing site, and the rebar fragments are dropped.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a crushing device used for crushing reinforced concrete structures and structures using reinforced concrete such as reinforced concrete walls.

[0002]

[Prior art]

 In the case of crushing the above-mentioned reinforced structure, a self-propelled civil engineering crusher has been conventionally used. This civil engineering crushing device is configured such that a boom is erected up and down on a main body equipped with a crawler for traveling, and a pair of crushing blades is attached to the tip of this boom. The crushing blade is connected to a hydraulic cylinder, and is opened and closed by rotating one of them with respect to the other by the driving of the hydraulic cylinder. During this opening and closing, the reinforced concrete structure can be sandwiched and the strong pressure can be used for crushing.

[0003]

[Problems to be solved by the device]

 The civil crushing device as described above can crush concrete fragments to such a size that they can be reused. However, the iron pieces generated from the rebar due to the crushing are mixed with the concrete pieces, and the conventional equipment cannot separate and collect the concrete pieces and the reinforcing bar pieces from this mixed state. For this reason, after crushing the reinforced concrete structure, it is necessary to separate the concrete fragments from the iron fragments, which has a problem in that the work efficiency is poor and labor saving is not possible.

The present invention has been made in consideration of the above circumstances, and has a function of crushing a reinforced concrete structure, and at the same time crushing an iron piece generated by the crushing and extracting the iron piece from the concrete iron piece. The purpose is to provide.

[0005]

[Means for Solving the Problems]

 The crushing device of the present invention comprises a pair of crushing blades that are opened and closed by driving a fluid pressure cylinder, and an electromagnet attached to at least one of the crushing blades, and the whole is detachably attached to an external device. And

[0006]

[Action]

 By opening and closing the pair of crushing blades in the above structure, the reinforced concrete structure is crushed to generate reusable concrete fragments. Along with these concrete fragments, iron fragments are generated from the rebar, and these become a crushed product in a mixed state. The electromagnet is magnetized by the supply of electric current and generates a magnetic attraction force. Only the iron pieces are adsorbed to the electromagnet by bringing the magnetized state of the electromagnet close to the crushed material in the mixed state or by stirring the crushed material. Therefore, only the iron pieces can be taken out from the crushed material in the mixed state, and the iron pieces and the concrete pieces can be separated.

[0007]

【Example】

 1 and 2 show an embodiment of the present invention, which comprises a crushing device 1 and a self-propelled work vehicle 20 as an external device to which the crushing device 1 is detachably mounted. The crushing device 1 has a frame 2 formed in a substantially “L” shape, and an electromagnet 3 attached to a lower portion of the frame 2. Here, the bent tip portion of the frame 2 is one crushing blade 4. That is, in this embodiment, one crushing blade 4 is formed integrally with the frame 2. The other crushing blade 5 is provided above the crushing blade 4 in an opposed state.

The other crushing blade 5 is rotatable with respect to the frame 2, that is, one crushing blade 4 via a pivot rod 6 on the base side. The blades 4 and 5 are opened and closed. The pair of crushing blades 4 and 5 crush the reinforced concrete structure by closing the crushing blades from the open state. In the illustrated example, a plurality of pointed cutter blades 7 are formed on the surface of the other movable crushing blade 5 facing the fixed one crushing blade 4. The cutter blade 7 has a saw blade shape as a whole and mainly forcibly cuts the reinforcing bar in the reinforced concrete structure.

Reference numeral 8 is a fluid pressure cylinder for rotating the other crushing blade 5. A hydraulic cylinder is used as the fluid pressure cylinder 8, one end of which is connected to the upper portion of the frame 2 and the other end of which is connected to the upper portion of the crushing blade 5 via connecting rods 9 and 9a, respectively. As a result, due to the expansion and contraction operation of the fluid pressure cylinder 8, the crushing blade 5 rotates in the reciprocating direction around the pivot rod 6, and the pair of crushing blades 4 and 5 is opened and closed. In this embodiment, since the hydraulic cylinder is used as the fluid pressure cylinder 8, it is possible to operate a strong pressure while having good controllability.

The electromagnet 3 is attached to the frame 2 at a position opposite to the crushing blade 5, and is located on the rear side of one of the crushing blades 4. The electromagnet 3 is fixed to the recess 10 by a bolt or the like while being partially inserted in the recess 10 formed on the rear side of the crushing blade 4, and part of the electromagnet 3 is pulled out from the recess 10. In the illustrated example, the electromagnet 3 is formed in a disc shape, but may be formed in a polygonal disc shape or any other appropriate shape. The electromagnet 3 is magnetized by passing a current and a magnetic attraction force is generated, so that the iron piece can be attracted. Also, the magnetic attraction force disappears when the current is cut off, and the iron pieces that have been adsorbed fall by their own weight.

The crushing device 1 having the above structure is attachable to and detachable from the self-propelled work vehicle 20 as a whole. In the illustrated example, this attachment is performed by inserting the connecting rod 9 into the attachment bracket 21 on the side of the self-propelled work vehicle 20. Since the crushing device 1 is detachably attached to the external device such as the self-propelled work vehicle 20 as described above, the crushing device 1 can be applied to different external devices, and has versatility and convenience. be able to. As shown in FIG. 1, the self-propelled work vehicle 20 is provided with a crawler 23 at a lower portion of a rotatable body 22 and is adapted to be self-propelled by the operation of the crawler 23. A first boom 24 is rotatably attached to the main body 22, and a second boom 25 is rotatably attached to a tip end portion of the first boom 24. A mounting bracket 21 for mounting the crushing device 1 is mounted on the tip of the second boom 25.

Hydraulic cylinders 26 and 27 are respectively stretched between the first boom 24 and the main body 22 and between the first boom 24 and the second boom 25. By 27, the first and second booms 24, 25 rotate to form a predetermined working posture. Reference numeral 28 is a hydraulic cylinder that is bridged between the second boom 25 and the mounting bracket 21. The expansion and contraction of the hydraulic cylinder 28 causes the mounting bracket 21 to rotate within a range of approximately 360 degrees, and the crushing device 1 also rotates integrally. Since such a wide range of rotation expands the workable area of the crushing apparatus 1, it is possible to deal with the shape, size, or crushed portion of the reinforced concrete structure.

On the main body 22 of the automatic work vehicle 20, a cockpit 29 for instructing work is provided in a front portion, and a power generator 30 serving as a power source is provided in a rear portion. Further, a converter 31 for converting the generated alternating current into direct current is connected to the generator 30. This converter 31 is connected to a control device 32 in the cockpit 29, and energizes and stops the electromagnet 3 of the crusher 1 based on a control signal from the control device 32. To supply the DC current from the converter 31 to the electromagnet 3, a connector 34 is attached to the second boom 25, and the connector 34 and the electromagnet 3 are connected by a coupling 35.

In the above-described embodiment, the pair of crushing blades 4 and 5 are opened and closed by driving the hydraulic cylinder 8 to sandwich and crush the reinforced concrete structure. This crushing is performed by the strong pressure of the hydraulic cylinder 8 so as to generate concrete fragments having a grain size that can be reused. Simultaneously with the generation of this concrete fragment, the crushing blades 4 and 5 cut the rebar, so that a crushed product in which the iron fragment is mixed with the concrete fragment is generated. On the other hand, by energizing the electromagnet 3 to magnetize it, the electromagnet 3 in this magnetized state is brought closer to the crushed material, or the crushed material is stirred together with the crushing blades 4 and 5, so that only the iron piece A is adsorbed to the electromagnet 3. (See FIG. 2). Then, with the iron piece A adsorbed, the main body 22 is turned or the booms 4 and 5 are turned to move the crushing device 1 to the iron piece loading place.

After that, the electric current to the electromagnet 3 is cut off to eliminate the magnetization. As a result, the adsorbed iron pieces A fall by their own weight to the loading place, the iron pieces and the concrete pieces are separated, and they can be reused separately. Therefore, since it is possible to separate concrete fragments and iron fragments at the same time as crushing the reinforced concrete structure, the separation work in the post-process becomes unnecessary, and the work efficiency is improved and the labor can be saved.

The present invention is not limited to the above embodiments, and various modifications can be made. For example, both of the pair of crushing blades 4 and 5 may be rotatable, which increases the opening angle, so that it is possible to crush a thick structure. The electromagnet 3 may be provided on both the pair of crushing blades 4 and 5.

[0017]

[Effect of device]

 The present invention has an electromagnet attached to the crushing blade for crushing reinforced concrete structures. At the same time as crushing reinforced concrete structures, iron pieces can be adsorbed, and iron pieces and concrete pieces can be separated efficiently, and labor can be saved. . In addition, since the entire device is detachable from the external device, it can be applied to different external devices, improving versatility.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment of the present invention

FIG. 2 is a perspective view of an embodiment of the present invention.

[Explanation of symbols]

 1 Crushing device 2 Frame 3 Electromagnet 4, 5 Crushing blade 8 Fluid pressure cylinder

Claims (1)

[Scope of utility model registration request] 1. A crusher, comprising: a pair of crusher blades that are opened and closed by driving a fluid pressure cylinder; and an electromagnet attached to at least one of the crusher blades, the whole of which is detachably attached to an external device. apparatus.