JP2531541B2 - Grasper and crusher with electromagnet - Google Patents

Description

TECHNICAL FIELD The present invention relates to separating a reinforcing bar and a concrete block from a crushed product generated when a reinforced concrete structure is broken, and solidifying and transporting the separated reinforcing bar. The present invention relates to a grasper / crusher used.

Conventional technology When a reinforced concrete structure such as a building is destroyed, a mixture of reinforcing bars and concrete blocks is generated,
Since the reinforcing bar and the concrete block are partly joined, it is necessary to separate the reinforcing bar and the concrete block in the mixture as a post-treatment after the structure is destroyed. There is a case where a concrete lump generated by destroying a concrete structure is thrown into a dumping place such as a landfill, or further crushed into small pieces and used as road crushed stone or the like. Even when discarding concrete lumps in landfills, etc.,
It is not preferable that reinforcing steel is mixed in the concrete, and there are cases where it cannot be discarded in the dump site. Also, when reusing concrete lumps, it is necessary to crush the concrete lumps into small pieces with a small plant, but if reinforcing bars are mixed in the concrete pieces, the reinforcing bars will be blocked during transportation and the small piece plant will stop operating. In some cases, it is necessary to completely remove the reinforcing bar from the concrete block.

Further, since the reinforcing bar is reused in a foundry or the like, it is necessary to avoid that the concrete block adheres to the reinforcing bar. Further, in terms of transportation cost, it is also preferable from the viewpoint of transportation cost to transport the reinforcing bar so that the reinforcing bar is made as small as possible and not bulky.

Therefore, the applicant of the present application separates the reinforcing bar and the concrete block as a post-treatment device after the destruction of the reinforced concrete structure,
Moreover, a gripping machine and concrete crusher capable of compacting the reinforcing bars have been proposed (JP-A-63-184667). This gripping machine / concrete crusher separates the reinforcing bar and the concrete block, compacts the reinforcing bar into small pieces, and facilitates the collection and transportation of the reinforcing bars.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention further improves the above-mentioned gripping and concrete crushing machine, facilitates separation work of reinforcing bars and concrete blocks, and collects and conveys reinforcing bars, and remains after separating concrete blocks. An object of the present invention is to provide a gripping machine and a crusher with an electromagnet that facilitates the handling of rebar.

Means for Solving the Problems The present invention has a pair of arms which are driven by a driving source and whose tip portions are opened and closed, and the pair of arms are formed in a shape in which the tips intersect when the arms are closed, A crusher that also functions as a gripping machine is equipped with an electromagnet near the center of rotation of the arm. In particular, the arm is composed of a plurality of arm members in the form of a hawk and a plurality of connecting members for connecting the arm members to each other, and the concrete block adhered to the reinforcing bar can be crushed into small pieces to separate the concrete block from the reinforcing bar. To do so. Further, by making the facing surfaces of the arm members of at least one of the arms tooth-shaped, the splitting of the concrete block is made more efficient.

Action For a mixture of reinforced concrete and a lump of concrete produced by destroying a reinforced concrete structure, open the arm and scoop the mixture. Further, since the tips of the pair of arms intersect when closed, the reinforcing bars and the like can be gripped, and the reinforcing bars and the like can be held by the arms and taken out. Further, the arm is opened and the electromagnet is energized to attach the rebar to the electromagnet to collect the rebar and the like. By opening the arm and closing the scooping arm, the mixed aggregate of the reinforcing bar and the concrete block to which the concrete blocks collected in this way are attached is solidified into one block and the reinforcing bar is compressed by the compressive force. The concrete mass adhering to is crushed and separated from the reinforcing bar. At this time, if the work is performed by energizing the electromagnet to attach the reinforcing bar to the electromagnet and rolling the reinforcing bar into one block, the rolled reinforcing bar does not separate from the pair of arms, and the reinforcing bar becomes one block. The work of rolling and solidifying and the work of peeling the concrete block from the reinforcing bar can be efficiently performed. Further, a large number of reinforcing bars can be attracted with an electromagnet, and the operation of opening and closing the arms to pinch the reinforcing bars can be repeated to round the reinforcing bars into small pieces. Further, the rebar embedded in the crushed concrete can be easily found by attracting it with the electromagnet, and the rebar and the concrete can be completely separated.

Embodiment FIG. 1 is a front view of the first embodiment of the present invention when the arm is closed, FIG. 2 is a right side view of the same, and FIG. 3 is a front view when the arm is opened.

Reference numerals 1 and 2 are a pair of arms, one end of which is pivotally attached to pins P3 and P4 provided between the side plates 3 and 3 and which are rotated by the pins P1 and P2 to the links 4, 4, and 5. It is rotatably mounted. The other ends of the links 4, 4, 5 are rotatably attached to pins P5, 6 provided on mounting members 9, 9, 10, 10 fixed to the hydraulic cylinder 7. The side plates 3 and 3 are held at a predetermined distance and the connecting plate 1
A bracket member 16 is fixed to the connecting plate 15 with bolts or the like. Bracket member 16 mounting hole 1
Each of 7,18 is rotatably attached via a pin to the arm tip of a boom of a work machine (not shown) such as a movable power shovel. One end of the piston rod 8 of the hydraulic cylinder 7 is threaded and fixed to the connecting plate 15 and the bracket member 16 with a nut. That is,
The piston rod 8 connecting plate 15 and the bracket 16 are integrally formed.

Guide members 11, 11, 12, 12 are fixed in parallel to the surfaces of the side plates 3, 3 facing the hydraulic cylinder 7 to form guide grooves,
Engaging members 13, 1 provided on the hydraulic cylinder 7 in the guide groove
4 is engaged to guide the vertical movement of the hydraulic cylinder 7 (vertical movement in FIGS. 1 to 3). Further, an electromagnet 6 is attached to the lower ends of the side plates 3 and 3 near the point where the arms 1 and 2 are attached to the side plates 3 and 3, that is, to the open / close base ends of the arms 1 and 3.

As shown in FIG. 2, the arms 1 and 2 have a plurality of arm members 1
a, 1a ... 2a, 2a ... Are arranged in a hawk shape, and the respective arm members are connected by a plurality of connecting members 1c, 1c ... 2c, 2c. A tooth profile having an uneven shape is formed on the surface of the arm members 2a, 2a ... Of the one arm 2 facing the other arm 1, and when the arms are closed, the arm members 1a, 1a ... 2a, 2a. Of the arm member 2a of the arm 2 is slightly intersected with the other end of the arm member 1a of the other arm 1 so as to intersect. Has become. In addition, 19 is a pipe to which a hydraulic hose for supplying and discharging pressure oil is connected to one side of the hydraulic cylinder, and 20 is a hydraulic hose for supplying and discharging pressure oil to the other side of the hydraulic cylinder 7. It is a hydraulic pressure supply / discharge port.

In the above structure, when the hydraulic cylinder 7 is operated to shorten the piston rod 8, the piston rod 8 is fixed to the connecting plate 15 and the bracket member 16. 14 is the guide member 11,
Guided by a guide groove consisting of 12 and rises (connecting plate
Move to the 15 side) As shown in Fig. 3, pin each arm 1 and 2 via mounting members 9 and 10, pins P5 and P6, links 4,5 and pins P1 and 2
Rotate P3 and P4 as the center to open the arm tip. Further, when the piston rod 8 is extended, the hydraulic cylinder 7 is lowered by the engaging members 13 and 14 being guided by the guide groove, and the pin P
Arms 1 and 2 are pin P through pins 5, P6, links 4,5 and pins P1,2
Rotate around P3 and P4 to move the arm 1, as shown in Fig. 1.
2 closed. At this time, if the arms 1 and 2 are completely bound, the tips of the arms will intersect.

 The above is the opening / closing operation of the arms 1 and 2.

When working with this gripping machine and crusher, first, by grasping the mixture of the reinforcing bar and the concrete block generated by destroying the reinforced concrete structure with arms 1 and 2, and further closing arms 1 and 2, The mixture of concrete blocks is compressed and this compressive force crushes the concrete blocks, separating the concrete blocks from the reinforcing bars. In particular, the arms 1 and 2 are made up of hawk-shaped arm members 1a and 2a, and the arm members 1a and 2a have a gap in the winding, so the crushed concrete mass flows out from this gap and separates the reinforcing bar from the concrete mass. make it easier. After compressing the mixture in this way and separating the concrete block from the reinforcing bar to some extent, an electric current is applied to the electromagnet to attract the reinforcing bar to the surface of the electromagnet 6 to attach and collect it, and also to scrape the reinforcing bar with arms 1 and 2. . Then, when the arlo 1 and 2 are closed, the reinforcing bars are attached and collected on the surface of the electromagnet 6, and are compressed by the arms 1 and 2 to be rolled into one lump and solidified. And arms 1, 2
By repeating opening and closing, the concrete mass adhered to the reinforcing bar is crushed, and the smaller the reinforcing bar is hardened, the more the concrete mass is crushed and the concrete mass is removed from the reinforcing bar. Then, the crushed concrete mass falls outside the space between the arm members 1a and 2a and is solidified by the arms 1 and 2 to be only the reinforcing bar. Moreover, by collecting the reinforcing bars, opening and closing the arms 1 and 2 and compressing them, and operating the electromagnet while forming one mass, the mass of the reinforcing bars is attracted by the electromagnet and drops even when the arms are opened. Therefore, the work of separating the reinforcing bar and the concrete block and compressing the reinforcing bar into one block and hardening the same can be performed simultaneously and extremely easily. In this way, when the block of rebar is solidified to a certain size, the block of rebar is transported to a predetermined accumulation location, the operation of the electromagnet is stopped, and the arm 1,
Open 2 and let the lumps of reinforcing bars gather at the gathering place.

Further, when the dispersed reinforcing bars are collected, the arms 1 and 2 are completely opened as shown in FIG. 3, the electromagnet 6 is energized and operated, and the reinforcing bars are attracted by the electromagnets to collect the reinforcing bars. Furthermore, when it is not possible to collect the magnets due to the attractive force of the electromagnet, the arms 1 and 2 hold the reinforcing bar and pull out the reinforcing bar. In particular, the arms 1 and 2 intersect at their tips when the arms are closed, and the tooth profile formed on the arm members 2a of one arm 2 is at least the arm member 1a of the other arm.
Because it is formed so as to reach the opposite surface position of. The rebar can be gripped.

Further, in order to facilitate the collection of the reinforcing bars by the electromagnet, the electromagnet 6a is fixed to the arm member as shown by the broken line in FIG. 1, and the arm is opened as shown in FIG. Also, if the rebar is attracted by energizing the rebar, the work of collecting the rebar can be efficiently performed.

4 and 5 show a second embodiment of the present invention. In this embodiment, a hydraulic cylinder 31 is fixed to a bracket member 30, and a mounting member 33 is attached to the tip of a piston rod 32 of the hydraulic cylinder 31. Pins P10 and P11 are fixed via
One ends of arms 34 and 35 are rotatably attached to the pins P10 and P11. Further, pins P14 and P15 are provided on the flange portion of the bracket member 30, and the pins P14 and P15 are linked to each other.
36 and 37 are rotatably rotatably attached, and the other ends of the links 36 and 37 are rotatably attached to pins P12 and P13 fixed to the arms 34 and 35, respectively. Further, an electromagnet 38 is fixed to the tip of the piston rod 32. The arms 34 and 35 are
In the same manner as the embodiment of the above, it is composed of a plurality of arm members in a hawk shape and a connecting member for connecting these arm members,
A gap is formed between the arm members. And the first
The difference from the embodiment is that each arm member is formed in the same shape, and the facing surfaces of the arms 34 and 35 are concave and are formed in an arc shape so that the tips intersect when the arms are closed, and
Installed. Reference numeral 39 is a pipe and a hydraulic hose attachment port for supplying and discharging hydraulic oil to and from the hydraulic cylinder 31.

When the hydraulic cylinder 31 is operated and the piheston rod 32 is shortened, as shown in FIG. 5, the pins P10, P11 are pulled toward the bracket member 30 side, and the arms 34, 35 are pulled by the pin P1.
It is rotated around 0 and P11 and closed. On the contrary, when the piston rod 37 is extended, as shown in FIG.
Will rotate around pins P10 and P11 and open.

Also in this second embodiment, the same operation as the operation described in the first embodiment can be performed. That is, the mixture of reinforced concrete blocks is grasped by the arms 34 and 35, the arms are opened and closed, the mixture is compressed, the concrete block is crushed to separate the reinforcing bar and the concrete block, and the reinforcing bars are attracted by the electromagnet to collect the reinforcing bars and the arms are opened and closed. Let the rebar be compressed into one mass. Further, also when rebar is collected, the rebar can be collected by opening the arms 34 and 35 to energize the electromagnet to attract the rebar as shown in FIG.

Furthermore, in this embodiment, unlike the first embodiment,
Since the arm member has no tooth profile, it is suitable for carrying products that are not damaged or iron plates.
In particular, since the tips of the arms intersect when the arms are closed, it is possible to hold an iron plate or iron product between the arms and operate an electromagnet to suck the iron product or iron plate so that it can be held stably and can be transported. It is convenient.

EFFECTS OF THE INVENTION The gripper and crusher with an electromagnet according to the present invention is a machine that separates rebar and concrete blocks, compresses the rebar into one block, and rolls the rolled bar and other objects. Various operations such as transportation and collection of reinforcing bars can be performed,
Moreover, since the work of collecting the reinforcing bars to which the concrete blocks adhere and compressing and solidifying the reinforcing bars into a single block and the work of separating the concrete blocks from the reinforcing bars are performed, efficient work can be performed. Furthermore, during the work of compressing and solidifying the rebar,
Since the rebar can be held in the arm by the electromagnet, the mass of the rebar does not drop from the inside of the arm during the work of compressing and solidifying the rebar by opening and closing the arm, and the rebar can be efficiently and densely packed. You can It can also be used to convey iron products and the like, and the iron products can be stably conveyed if the iron products are sandwiched by an arm and the iron products and the like are attracted and conveyed by an electromagnet.

Further, since the reinforcing bar solidified in a certain mass is solidified with high density, it does not require a large space even when the reinforcing bar is transported, and the number of trucks or the like to be transported can be reduced.

Further, since the reinforcing bars are detected and collected by the electromagnet from the mixture of the reinforcing bars and the concrete, the reinforcing bars can be collected completely, and the reinforcing bars do not remain in the concrete, so that there is no problem in reusing the concrete or discarding the concrete.

[Brief description of drawings]

FIG. 1 is a front view of the first embodiment of the present invention when the arm is closed, FIG. 2 is a right side view of the same, and FIG. 3 is a front view of the same embodiment when the arm is opened. FIG. 5 is a front view when the arm of the second embodiment of the present invention is opened, and FIG. 5 is a front view when the arm of the second embodiment is closed. 1,2,34,35 …… arm, 3,3 …… side plate, 4,5,36,37 …… link, 6,38 …… electromagnet, 7,31 …… hydraulic cylinder, 8,32 …… piston Rod, 1a, 2a ... Arm member, P1, P2, P3, P4, P5, P6, P10, P11, P12, P13, P14, P15 ...
… It ’s a pin.

Claims (4)

(57) [Claims] 1. A pair of arms, which are driven by a driving source to open and close at their tips, are formed in such a shape that their tips intersect when the arms are closed, and at least the center of rotation of the arms. A gripping machine and crusher with an electromagnet, characterized in that an electromagnet is attached in the vicinity. 2. The gripper / crusher with an electromagnet according to claim 1, wherein the arm is composed of a plurality of arm members in a hawk shape and a plurality of connecting members for connecting the arm members to each other. 3. The grinder / crusher with an electromagnet according to claim 2, wherein the facing surfaces of the arm members of at least one arm are formed in a tooth shape. 4. The gripping machine and crusher with an electromagnet according to claim 1, 2 or 3, wherein an electromagnet is also incorporated in the pair of arms.