JP7011855B2 - Rubber crawler disposal method and disposal equipment - Google Patents

Description

The present invention relates to a technique for disposing of a rubber crawler (hereinafter referred to as a rubber crawler) which is a kind of endless track, and more specifically, a core metal constituting a rubber crawler for disposing of the rubber crawler. Is a related invention of a technique for separating a rubber band from rubber.

Tracks are also called crawler, track belts, crawler belts, caterpillars, etc., and are used for running parts such as agricultural machinery, civil engineering construction machinery, and snow vehicles. A rubber crawler, which is a type of endless track, has a reinforcing wire that extends in the band length direction embedded in an endless band-shaped rubber body, and elongated core metal that extends in the width direction at predetermined intervals in the band length direction. It is buried and fixed in.

Such a rubber crawler is a consumable item because the rubber part is worn out with use, and is replaced as appropriate, so that the disposal of the discarded rubber crawler tends to be a problem.

Old rubber crawlers after use are treated as industrial waste, but the rubber crawlers are difficult to separate because the core metal and steel cord, which are the components of the rubber crawlers, are firmly integrated with the band-shaped rubber body and are difficult to separate. It is considered to be one of the difficult-to-disposal materials, and in most cases it was discarded, stored, or piled up as it was, and it was sometimes illegally dumped. According to estimates made by the Japan Construction Equipment Manufacturers Association in the early 2000s, nearly 80% of the discarded rubber crawlers were untreated.

Although it is conceivable to perform a cutting process as described in Patent Document 1 (Japanese Patent Laid-Open No. 54-015899) for landfill processing, it is desirable from the viewpoint of recent conservation of the natural environment and realization of a sustainable society. It's not a thing. Moreover, when trying to cut a rubber crawler to a size according to the rules during landfill processing, it is difficult to even cut the rubber crawler because the core metal becomes an obstacle in many cases, and legal landfill processing is also difficult.

Therefore, in order to make effective use of resources, the present inventor separates the core metal and the band-shaped rubber (including the reinforcing wire), reuses the core metal as an iron material, and uses the band-shaped rubber as a heat source material, etc. I considered using it as a. In short, the purpose is to contribute to a sustainable society by promoting recycling and utilization of each material.

As a result of specific studies by the present inventor, the core metal can be steel-made, for example, as an iron material in an electric furnace for melting metal. Further, as long as the core metal is separated, the strip-shaped rubber can be made into chips through a secondary crushing process as necessary, as in the case of automobile waste tire processing, even if it contains a reinforcing wire, in the paper industry. It can be used as a heat source material for boiler fuel and the like in the cement manufacturing industry. If the core metal is used as a heat source material without being separated, the core metal remains without burning, and it is necessary to stop the boiler to take out the core metal, which is not realistic. Therefore, it is used as a heat source material. When doing so, it is necessary to separate the core metal from the strip rubber in advance.

However, as described above, since the core metal is firmly fixed to the rubber band of the rubber crawler, it is very difficult to separate the core metal from the rubber band, and no practical method has been provided in the past. It was.

The National Research and Development Corporation, National Agriculture and Food Research Organization (Agricultural Research Organization) has been conducting research on separating core metal from strip rubber of rubber crawlers at national expense. In 1 (https://www.naro.affrc.go.jp/project/results/laboratory/brain/2007/brain07-01), the disposal equipment for rubber crawlers is open to the public.

However, the disposal device, which is the research product of NARO, is a "automatic cutting device for used agricultural rubber crawler" published in Non-Patent Document 2 (2006 common basic research result information) as a pretreatment. Since it is necessary to cut the rubber crawler at a predetermined interval corresponding to the arrangement pitch of the core metal to make a cutting piece in which one of the core metal is embedded, the equipment is large and the work process is increased. Was inevitable. Moreover, since the core metal is heated after being cut into small pieces, a notch is made in the central portion of the rubber band in the width direction, and the rubber band is peeled off from both sides in the width direction, so that the rubber band is firmly fixed. There is also a problem that a drive device such as a large hydraulic mechanism is required to separate the band-shaped rubber. Moreover, since the band-shaped rubber is gripped so as to be sandwiched and peeled off along the surface of the core metal, it is difficult to reliably grip the band-shaped rubber, which is an elastic body, and the durability of the part that grips the band-shaped rubber is also high. Was prone to problems, and there were also problems with the structural mechanism and durability.

In fact, according to the explanation of the National Agriculture and Food Research Organization, it is said that the equipment was manufactured by outsourcing to Tokushu Bane Co., Ltd. The reality is that it is not a solution to the problem of processing rubber crawlers.

Further, Patent Document 2 (Japanese Unexamined Patent Publication No. 2006-044076) discloses a method for forcibly stripping the core metal from the band-shaped rubber by applying an external force to the core metal of the rubber crawler. However, even if the rubber crawler is worn out, the adhesion between the band-shaped rubber and the core metal is extremely strong, so it is actually difficult to separate the core metal, and even if it can be separated, a lot of band-shaped rubber adheres to the core metal. It is not a realistic method because it is unavoidable to do it.

Furthermore, in Patent Document 3 (Japanese Patent No. 4616143), a rubber crawler cut piece cut to a predetermined size is cooled to a low temperature embrittlement temperature or lower and compressed by a mold to form a rubber portion. A method of separating the core metal from the band-shaped rubber by crushing is disclosed. However, since considerable equipment is required for cooling to a temperature below the low temperature embrittlement temperature and the rubber part needs to be crushed under such a cooling state, process control becomes severe and the hurdles for implementation are high. Therefore, it was difficult to put it into practical use.

Special Publication No. 54-015899 Japanese Unexamined Patent Publication No. 2006-044076 Japanese Patent No. 4616143 https://www.naro.affrc.go.jp/project/results/laboratory/brain/2007/brain07-01 (National Research and Development Corporation Agriculture and Food Industry Technology Research Organization HP) https://www.naro.affrc.go.jp/project/results/laboratory/brain/2006/common06-50.html (National Research and Development Corporation Agriculture and Food Industry Technology Research Organization HP)

Here, the present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that a pretreatment for making a rubber crawler into a cutting piece in which one of the core metal is embedded is required. It is an object of the present invention to provide a new disposal method and disposal device for a rubber crawler, which can make it possible to separate the core metal of the rubber crawler from the band-shaped rubber without using the rubber crawler.

Hereinafter, preferred embodiments for grasping the present invention will be described, but each of the embodiments described below is described as an example, and not only can be appropriately combined with each other and adopted, but also described in each embodiment. The plurality of components of the above can be recognized and adopted independently as much as possible, and can be appropriately adopted in combination with any of the components described in another embodiment. Thereby, in the present invention, various other embodiments can be realized without being limited to the embodiments described below.

The first aspect is a method for disposing of a rubber crawler in which an elongated core metal extending in the width direction of the strip rubber is embedded and fixed to the strip rubber at predetermined intervals in the length direction of the strip rubber. Then, the core metal is heated, a notch is formed in the band-shaped rubber along the end portion of the core metal in the length direction, and the core metal is formed into the band-shaped by a take-out tool inserted into the notch. It is a method of disposing of a rubber crawler, which is characterized by extracting from rubber and separating the rubber.

According to this aspect method, the rubber around the core metal is softened by heating the core metal, so that the core metal can be easily separated from the band-shaped rubber. Under such a state, the core metal can be efficiently taken out from the band-shaped rubber by applying an external force to the core metal with the take-out tool inserted through the notch provided along the core metal.

In such a method, it is possible to apply an external force to the core metal and easily take it out of the band-shaped rubber, as compared with the case where an external force is applied to the band-shaped rubber that is difficult to pinch and the band-shaped rubber is pulled from the core metal to be peeled off. become. In particular, when taking out the core metal, it may not be necessary to perform a difficult pretreatment such as shredding the band-shaped rubber into cutting pieces in which one core metal is embedded.

As the take-out tool in this embodiment, for example, a crowbar-shaped take-out tool can be adopted. By applying an external force that lifts the core metal upward by prying it like a lever, the core metal can be pulled out from the band-shaped rubber. At that time, even if the surface of the core metal is covered with the band-shaped rubber, the band-shaped rubber is softened or weakened by the heating of the core metal. It is possible to pull out the core metal outward from the band-shaped rubber by breaking through or pulling out from the notch.

Alternatively, the take-out tool in this embodiment can be configured by using, for example, the partition wall described in the sixth aspect described later. Specifically, when a partition wall is provided around the core metal as described in the sixth aspect described later and used as a cutting tool according to the second aspect described later, the short side of the core metal is used. A partition pulled out from the band-shaped rubber by pushing both side wall portions of the partition walls facing each other in the direction (length direction of the band-shaped rubber) into the band-shaped rubber and locking the core metal between the both side wall portions in a fitted state. It is also possible to take out the core metal together with the wall. Even if the distance between the partition walls facing each other is slightly larger than the width dimension of the core metal, the core metal having a thickness dimension is tilted to be opposed to each other when the partition wall is pushed into the band-shaped rubber. It is easy to be locked between the partition walls in a fitted state. At that time, for the purpose of inclining the core metal so that it can be easily locked between the facing partition walls, for example, as described in the third aspect described later, the end portion of the core metal is locally pressed. Is also possible. Further, the core metal that is fitted to the partition wall drawn from the band-shaped rubber can be separated from the partition wall by an impact using, for example, a hammer.

The second aspect is the method for disposing of the rubber crawler according to the first aspect, in which the notch is formed in the rubber band by pushing the cutting tool into the rubber band.

According to this aspect method, a notch can be formed in the strip rubber without using a special cutting device or the like. In particular, if the cutting tool is pushed into the band-shaped rubber while the core metal is heated, the cutting tool can be easily applied to the band-shaped rubber near the periphery of the core metal whose hardness has been reduced by heating the core metal. It is possible to form a notch by pushing it in, ensuring the durability of the notch, reducing the driving force required to push in the notch, and simplifying the device structure.

The third aspect is the method for disposing of the rubber crawler according to the first or second aspect, in which the notch is formed along one end of the core metal in the length direction of the strip-shaped rubber. By pressing the core metal from the outside on the other end side of the core metal, the core metal is tilted in the length direction of the band-shaped rubber to relatively raise the formation side of the notch. It is a thing.

According to this aspect method, the formation side of the notch in the core metal is relatively raised, so that, for example, when the bar-shaped ejector as described above is adopted, the tip portion of the bar-shaped ejector is cut from the notch to the core. It becomes easier to insert it into the bottom side of the gold, and the workability of taking out the core metal can be improved. Further, for example, when the take-out tool is configured by using the partition wall according to the sixth aspect as described above, it is also possible to make it easy to be locked between the facing partition wall portions by inclining the core metal. It will be possible.

In this embodiment, it is desirable that the step of pressing the core metal from the outside is performed under the heated state of the core metal together with the step of forming a notch in the band-shaped rubber, whereby the hardness is lowered by heating the core metal. It is possible to easily push the cutting tool into the band-shaped rubber near the periphery of the core metal to form a notch, and to efficiently tilt the core metal by the action of pressing force from the outside. Will also be possible.

The fourth aspect is the method for disposing of the rubber crawler according to any one of the first to the third aspects, wherein the core metal is heated by a burner.

According to this aspect method, the equipment and the control system can be simplified as compared with the case where the core metal is induced and heated (electromagnetic induction heating, high frequency induction heating), for example, and the practical application is facilitated. Not only that, it becomes easy to change the adjustment of the heating part etc. according to the state and type of the rubber crawler to be processed, and it becomes possible to easily realize the processing of various rubber crawlers carried in various states. Furthermore, the flame action of the burner makes it easier to exert a hardness lowering action due to a temperature rise not only on the core metal but also on the band-shaped rubber near the periphery, which can further facilitate the work of cutting and removing the core metal. ..

A fifth aspect is the method for disposing of a rubber crawler according to a fourth aspect, in which the core metal is heated by the burner with a partition wall provided around the core metal.

According to this aspect method, by providing the partition wall, the heating region by the burner can be limited and the core metal can be heated with excellent energy efficiency. In particular, if a partition wall that surrounds the core metal over almost the entire circumference and is substantially continuous in the circumferential direction is adopted, it is possible to limit the inflow of air to the surface of the rubber crawler heated by the burner. It is possible to suppress or avoid the burning of the rubber band due to heating to a high temperature and to be in a burning state, and it is also possible to suppress the generation of gas due to combustion or incomplete combustion.

However, the partition wall in this embodiment is not limited to the embodiment that surrounds the core metal over the entire circumference. For example, it is possible to provide only a pair of partition walls facing each other in the lateral direction of the core metal, or a pair of partition walls facing each other in the longitudinal direction of the core metal are added to form a continuous substantially rectangular shape over the entire circumference. Even if a frame-shaped partition wall is adopted, it is possible to partially provide notches and through holes to control the heating state by the burner, the combustion efficiency and temperature efficiency of the burner, and the extreme or overall temperature. It is also possible to control retention, convection of burner flames, and reduction of local effects.

The sixth aspect is the method for disposing of the rubber crawler according to the fifth aspect, in which the partition wall is pushed into the strip-shaped rubber to form the notch in the strip-shaped rubber .

According to this aspect method, the heat energy applied to the core metal by the burner is also applied to the band-shaped rubber in the inner region of the partition wall to reduce the hardness of the band-shaped rubber, and the heat energy causes the temperature of the partition wall itself to rise. Is also planned. Under such circumstances, the partition wall can be used as a cutting tool by applying an external force that presses the partition wall toward the band-shaped rubber to efficiently form a cut along the core metal in the band-shaped rubber. Will be possible.

A seventh aspect is the method for disposing of a rubber crawler according to any one of the first to sixth aspects, in which a fire extinguishing agent is poured into the strip-shaped rubber when the core metal is extracted from the strip-shaped rubber.

According to this aspect method, combustion of rubber strips and incomplete combustion can be avoided, and environmental pollution can be reduced. However, in the method for disposing of the rubber crawler according to any one of the first to sixth aspects, the core metal is heated, and the core metal is generally at least partially heated even when the core metal is heated by a burner. Since it is exposed to the outside, it is possible to heat the core metal efficiently, and it has been confirmed that the band-shaped rubber does not easily burn. In particular, by providing a partition wall over substantially the entire circumference around the core metal to limit the supply of air (oxygen) to the heating region, combustion of the band-shaped rubber can be sufficiently avoided. However, when heating using a burner, the rubber band may burn depending on the heating conditions, so it is desirable to pour the digestive agent according to this embodiment.

The digestive agent used is not limited, but even if water is used, for example, the combustion of the rubber band can be stopped promptly. In addition, even if the temperature of the core metal and the surrounding band-shaped rubber drops due to the use of a digestive agent, the adhesive force between the band-shaped rubber and the core metal is once reduced by heating, and the characteristics of the band-shaped rubber are changed by heating. After that, there is no big problem even if the core metal is taken out from the band-shaped rubber after that. Therefore, the step of pouring the digestive agent according to this embodiment may be, for example, after the core metal is taken out from the band-shaped rubber, or may be before or during the step of taking out the core metal.

The eighth aspect is the method for disposing of the rubber crawler according to any one of the first to the seventh aspects, wherein the heating of the core metal and the formation of a notch in the strip-shaped rubber are performed in the strip-shaped rubber. It is applied in parallel to a plurality of cores arranged continuously in the direction.

According to this aspect method, by performing each treatment step of heating the core metal and forming a notch in the band-shaped rubber substantially simultaneously for the plurality of core metals, a plurality of core metals can be taken out from one band-shaped rubber. The work can be carried out with excellent time efficiency, and the processing efficiency can be improved. In particular, by applying heat treatment in parallel to the cores that are continuously adjacent to each other in the length direction of the band-shaped rubber, the heat is applied to the continuous region as a whole, and the escape of heat energy is reduced. By doing so, it is possible to improve the thermal efficiency and thus the energy efficiency.

A ninth aspect is a rubber crawler disposal device in which an elongated core metal extending in the width direction of the strip rubber is embedded and fixed to the strip rubber at predetermined intervals in the length direction of the strip rubber. (I) A heating mechanism for heating the core metal, (ii) a cutting means for forming a notch in the band-shaped rubber along the end portion of the core metal in the length direction, and (iii). ) A rubber crawler disposal apparatus comprising: a taking-out means which is inserted into the notch of the strip-shaped rubber and the core metal is extracted from the strip-shaped rubber to be separated.

The apparatus according to this aspect makes it possible to easily implement, for example, the method for disposing of rubber crawlers according to the first to eighth aspects. Then, by implementing the rubber crawler disposal method as described above, it becomes possible to appropriately enjoy the above-mentioned technical effects.

As the heating mechanism in this embodiment, for example, a burner is preferably used as described above, but the heating mechanism is not limited thereto, and for example, an induction heating device can be adopted. However, when the induction heating device is used as a heating mechanism, if a coil wound around the core metal is to be adopted, the strip-shaped rubber must be shredded into cutting pieces in which one core metal is embedded. Since extra work is required, for example, a coil is wound on the facing surface of the core metal (preferably a surface facing a flat surface rather than an uneven surface of the core metal). It is desirable that an induction heating device having a structure is adopted so that an induction current is generated in the core metal without cutting the strip-shaped rubber.

A tenth aspect is the rubber crawler disposal apparatus according to the ninth aspect, wherein the cutting means has a cutting tip edge extending along a lengthwise end of the strip-shaped rubber in the core metal. A cutting tool that is movable in the approaching and separating directions with respect to the strip-shaped rubber, and a pressing force applied to the cutting tool in the approaching direction to the strip-shaped rubber is applied to the cutting tool. It has a pressing mechanism for pushing the notch tip edge into the band-shaped rubber.

In the heating mechanism in this embodiment, for example, by utilizing the fact that the hardness of the strip-shaped rubber in the vicinity of the core is lowered by heating the core metal, it is possible to form a notch in the strip-shaped rubber with a simple device structure. As the cutting tool in this embodiment, for example, as described in the sixth aspect, the partition wall described in the fifth aspect can be used.

The eleventh aspect is a disposal tool for a rubber crawler in which an elongated core metal extending in the width direction of the strip rubber is embedded and fixed to the strip rubber at predetermined intervals in the length direction of the strip rubber. Therefore, a peripheral wall portion arranged around the core metal is provided, and one of both side wall portions facing the strip-shaped rubber in the length direction of the peripheral wall portion sandwiching the core metal is attached to the strip-shaped rubber. It is a notch forming portion that is pushed in to form a notch, and the other of the both side wall portions in the peripheral wall portion protrudes toward the inner peripheral side and is from the outside with respect to the end portion of the core metal. It is a rubber crawler disposal tool characterized by having a pressing protrusion that exerts a pressing force.

The rubber crawler disposal tool according to this aspect is suitably used, for example, in carrying out the third aspect. Further, the rubber crawler disposal tool according to the present aspect can be suitably used, for example, as a component of the rubber crawler disposal device according to the ninth or tenth aspect.

By using the rubber crawler disposal tool according to this embodiment, for example, one end of the core metal in the lateral direction is used with respect to the strip-shaped rubber whose hardness is reduced around the core metal by heating the core metal. A notch can be easily formed by pushing along the portion. Moreover, with such pushing, a pushing pressure can be applied to the other end of the core in the lateral direction in the pushing direction, and the core can be tilted by the pushing pressure. By tilting the core metal, the core metal can be separated from the band-shaped rubber (reduction of the fixing force, etc.), and at the same time, the end portion of the core metal on the notch side is tilted so as to be raised, for example, after that. It is also possible to realize a mode suitable for taking out the core metal to be planned.

In the rubber crawler disposal tool according to this aspect, the peripheral wall portion does not have to be continuous over the entire circumference of the core metal. For example, a peripheral wall having a predetermined height of a substantially rectangular frame having a plane inner peripheral shape that is one size larger than the planar outer peripheral shape of the core metal so as to surround a pair of long side portions and a pair of short side portions of the core metal. Although it can be a portion, for example, one or both short side portions may not be present, or the long side portion on a side different from the cut forming portion may not be present, and the long side portion on the different side may be omitted. It is also possible to form the surface with a rod shape or the like in which only the pressing protrusion is extended in the pushing direction. Further, the peripheral wall portion may be provided with a partial notch, a through hole, or the like, and the notch forming portion has a strip-shaped shape having a tapered cross-sectional shape having a smaller thickness toward the tip side. The pushing resistance to the rubber may be reduced. Furthermore, the notch does not need to be provided over the entire length along the long side portion of the core metal, and for example, the notch may be formed only along the central portion of the long side portion, or a divided cut may be formed. ..

The twelfth aspect is the rubber crawler disposal tool according to the eleventh aspect, and in the peripheral wall portion, one of both side wall portions facing each other in the length direction of the strip-shaped rubber with the core metal interposed therebetween. In the cut-forming portion in the above, the tip portion toward the contact side with the strip-shaped rubber is projected as compared with the other of the both side wall portions.

By using the rubber crawler disposal tool according to this embodiment, the notch on one side of the core metal is preferentially formed at a sufficient depth with respect to the strip rubber, and the notch on the other side is substantially eliminated. By making it shallower or shallower, it is possible to improve the efficiency of the formation of the notch while reducing the pushing resistance force against the band-shaped rubber as a whole of the peripheral wall portion and reducing the load on the device.

According to the present invention, it may be possible to separate the core metal in the rubber crawler from the strip rubber without the need for pretreatment such that the rubber crawler is a cut piece in which one of the core metal is embedded. New techniques related to the disposal of rubber crawlers may be provided.

An overall perspective view showing an exemplary embodiment of a rubber crawler waste treatment apparatus that can be suitably used for carrying out the method of the present invention. A reference diagram for explaining the structure of a used rubber crawler processed by the rubber crawler disposal apparatus shown in FIG. A perspective view showing a main part of the rubber crawler disposal apparatus shown in FIG. An overall perspective view showing an exemplary embodiment of a treatment tool provided with a peripheral wall portion constituting the rubber crawler waste treatment apparatus shown in FIG. 1. A perspective view showing another view of the processing tool shown in FIG. A perspective view showing a further perspective of the processing tool shown in FIG. A process explanatory diagram for explaining a process of disposing of a rubber crawler as shown in FIG. 2 using the rubber crawler disposal apparatus shown in FIG. Explanatory drawing which shows an example of the taking-out tool used in another process which disposes of a rubber crawler as shown in FIG. 2 using the rubber crawler disposal apparatus shown in FIG. A process explanatory diagram for explaining yet another process of disposing of the rubber crawler as shown in FIG. 2 using the rubber crawler disposal apparatus shown in FIG. A process explanatory diagram for explaining yet another process of disposing of the rubber crawler as shown in FIG. 2 using the rubber crawler disposal apparatus shown in FIG. Explanatory drawing schematically showing a rubber crawler after the rubber crawler is disposed of as shown in FIG. 2 using the rubber crawler disposal apparatus shown in FIG. An overall perspective view illustrating another embodiment of a treatment tool provided with a peripheral wall portion that can be used in the rubber crawler waste treatment apparatus shown in FIG. 1.

Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of a rubber crawler waste treatment apparatus having a structure according to the present invention, which can be used to carry out the method of the present invention. Note that FIGS. 1A and 1B show the same device from different angles, in particular, FIG. 1A shows substantially the entire device, and FIG. 1B shows an enlarged processing section of the device. ..

As shown in FIG. 2, the rubber crawler disposal apparatus 10 of the present embodiment treats a rubber crawler 12 that is used for a traveling part of an agricultural machine and is discarded as used, as shown in FIG. Specifically, the rubber crawler 12 is formed of an endless band-shaped rubber 14 formed of a rubber elastic body and having a flat and substantially constant cross section having a predetermined thickness and extending in a strip shape in the circumferential direction. Further, the core metal 16 is fixed to the strip-shaped rubber 14 in a substantially embedded state at a substantially constant interval in the length direction in the circumferential direction. In general, a large number of reinforcing wires (steel cords) extending in the circumferential direction are also embedded and fixed in the band-shaped rubber 14, but they are not the subject of the present invention and are embedded in the band-shaped rubber 14, for example, as a heat source material. Since it is often possible to use the rubber as it is, the illustration is omitted.

As illustrated in FIG. 2, the core metal 16 is generally made of an iron-based metal, and has a substantially thin plate shape extending in the width direction of the strip-shaped rubber 14. Although the specific shapes of the strip-shaped rubber 14 and the core metal 16 differ depending on the rubber crawler, the strip-shaped rubber 14 has a through hole located in the central portion in the width direction and penetrating in the rubber thickness direction in the length of the strip-shaped rubber 14. The core metal 16 is formed at a predetermined pitch in the direction, and the core metal 16 is embedded and fixed between the through holes adjacent to each other in the length direction. In the core metal 16 illustrated in FIG. 2, a pair of claw-shaped protrusions 18 and 18 are formed on both sides of the center in the elongated direction, and are projected toward the inner peripheral side of the band-shaped rubber 14. ing. In the rubber crawler 12 that is discarded as used, the strip-shaped rubber 14 that covers these claw-shaped protrusions 18 and 18 and the inner surface of the central portion located between the claw-shaped protrusions 18 and 18 in the core metal 16 is generally peeled off. The core metal 16 is exposed.

The rubber crawler disposal apparatus 10 of the present embodiment can be used to execute a process of taking out the core metal 16 from the strip-shaped rubber 14 and separating the rubber crawler 12 as described above.

As shown in FIG. 1, the rubber crawler disposal apparatus 10 includes a gate-shaped press mechanism 20 as a whole. The press mechanism 20 is provided with a press rod 26 that can move up and down with respect to a beam portion 24 that is rigidly provided so as to straddle between the pair of left and right leg portions 22, 22. The press rod 26 is driven in the vertical direction by the drive device 28 provided in the beam portion 24. A bed 29 having a support surface that spreads substantially horizontally is installed below the press rod 26 on which the pressing force is applied, and a rubber crawler 12 as a processing target is placed on the support surface of the bed 29, for example. By cutting at a part of the endless circumference, it can be placed in a long strip-shaped unfolded state. In the present embodiment, the rubber crawler 12 is placed on the support surface of the bed 29 with the ground contact surface of the band-shaped rubber 14 facing downward and the claw-shaped protrusion 18 of the core metal 16 projecting upward. Become.

However, the specific structure of the press mechanism 20 is not limited, and it goes without saying that other skeleton structures such as a C-shaped press can be adopted, and the drive device 28 can also be hydraulically driven or electrically driven. Various drive mechanisms such as mechanical drive and human power drive can be adopted.

Further, as shown in FIG. 3, a processing tool 30 as an embodiment of a rubber crawler disposal tool having a structure according to the present invention is substantially boxed at the tip end (lower end) portion of the press rod 26. It is detachably fixed via a mold adapter 32.

In the processing tool 30 of the present embodiment, perspectives from a plurality of directions in a single item state are shown in FIGS. 4 (a) and 4 (b), FIGS. 5 (a) and 5 (b), and FIGS. 6 (a) and 6 (b). ing. As can be seen from these figures, the processing tool 30 is a strength member made of a rigid material such as metal, and includes a peripheral wall portion 34 having a rectangular frame shape as a whole.

In the peripheral wall portion 34, a pair of long side wall portions 36, 38 having a longitudinal plate shape and a pair of short side wall portions 40, 40 having a short plate shape are integrally connected to each other in the circumferential direction. , Consists of a continuous peripheral wall over the entire circumference. Further, the peripheral wall portion 34 is provided with a bracket 42 which is fixed so as to straddle the upper ends of the pair of long side wall portions 36, 38 at the upper end portion which is the upper end portion when mounted on the press rod 26.

Further, one of the long side wall portions 36, 38 of the pair of long side wall portions 36 (hereinafter, referred to as the front side wall portion 36 in the present embodiment, but the front and rear sides are not limited) is the other long side wall portion 38. Compared to (hereinafter, the rear side wall portion 38), it extends downward by a predetermined dimension when mounted on the press mechanism 20. In other words, the lower end edge portion of the rear side wall portion 38 is positioned above the lower end edge portion of the front side wall portion 36 by a predetermined height.

In particular, in the present embodiment, in both the front side wall portion 36 and the rear side wall portion 38, the lower end edge portion extends linearly at substantially the same height over the entire length, and the rear side wall portion extends over the entire length of the lower end edge portion. The front side wall portion 36 projects downward from the side wall portion 38. The relative protrusion height is not particularly limited, and may be the same protrusion height in the present invention. For example, as will be described later, for taking out the core metal 16 with respect to the band-shaped rubber 14. Considering that the notch is formed on only one side of the core metal 16 to improve work efficiency and reduce the pressing force, the difference in the protruding height between the front side wall portion 36 and the rear side wall portion 38 is large. It is desirable to set it within the range of about 3 mm to 30 mm.

The lower end edges of the pair of left and right short side wall portions 40, 40 may be appropriately set between the position of the lower end edge portion of the front side wall portion 36 and the position of the lower end edge portion of the rear side wall portion 38. desirable. In the present embodiment, the lower end edges of the pair of left and right short side wall portions 40, 40 are set to substantially the same positions as the lower end edge portions of the front side wall portions 36. As a result, the notch for taking out the core metal 16 formed in the band-shaped rubber 14 is extended over the entire length along one edge of the core metal 16 in the lateral direction, and is bent from both ends of the core metal 16 to be bent. By forming a substantially U-shaped notch as a whole so as to extend along both edges in the longitudinal direction of the core metal 16, the workability of taking out the core metal 16 is improved.

Further, at least the front side wall portion 36 of the peripheral wall portion 34 has a cutting edge-like bladed structure by gradually reducing the plate thickness toward the lower tip side at the lower end edge portion to form a tapered cross-sectional shape. It is desirable to be there. As a result, the resistance force at the time of forming the notch in the band-shaped rubber 14, which will be described later, can be reduced. However, considering the durability of the front side wall portion 36, particularly the lower end edge portion, it is desirable that the plate thickness dimension including the lower end edge portion and the cutting edge angle of the front side wall portion 36 be increased to some extent.

In the present embodiment, the pair of short side wall portions 40, 40 are also formed with substantially the same thickness dimension and cutting edge angle as the front side wall portion 36 so that a notch in the band-shaped rubber 14 can be formed. Since the rear side wall portion 38 does not positively form a notch, it does not need to have a cutting edge-like bladed shape like the front side wall portion 36.

Further, in the present embodiment, the pressing protrusion 44 protruding on the inner peripheral surface is integrally formed in the rear side wall portion 38. In the present embodiment, the rod-shaped pressing protrusion 44 is fixed to the inner surface of the rear side wall portion 38 having a height lower than the front side wall portion 36, and the protrusion of the pressing protrusion 44 is projected. The tip protrudes from the lower tip edge of the rear side wall 38 and protrudes to a degree that is substantially the same as or slightly less than the lower tip edge of the front side wall 36.

The peripheral wall portion 34 is fixed to the adapter 32 fixed to the lower end of the press rod 26 by superimposing the upper end surface of the bracket 42 and attaching and detaching it with a bolt or the like. In such a mounting state, the peripheral wall portion 34 is open in the vertical direction, and the lower end edge portion of the peripheral wall portion 34 and the tip end (lower end) of the pressing protrusion 44 are directed downward.

Here, the downward opening of the peripheral wall portion 34 is one size larger than the planar shape of the core metal 16 in the rubber crawler 12 to be processed, and as can be seen from FIG. 3, for example, around the core metal 16. In, the lower end edge portion of the peripheral wall portion 34 is pressed against the inner peripheral surface of the strip-shaped rubber 14 so as to be brought into contact with the inner peripheral surface. In short, the inner dimension of the peripheral wall portion 34, which is the distance between the pair of long side wall portions 36, 38 of the peripheral wall portion 34, in the lateral direction is slightly larger than the outer dimension of the core metal 16 in the lateral direction. At the same time, the inner dimension in the longitudinal direction of the peripheral wall portion 34, which is the distance between the pair of short side wall portions 40, 40 of the peripheral wall portion 34, is slightly larger than the outer dimension in the longitudinal direction of the core metal 16. ing.

As a result, in the rubber crawler disposal device 10 of the present embodiment, by driving the press rod 26 downward by the press mechanism 20, the processing tool 30 attached to the lower end of the press rod 26 is placed on the support surface of the bed 29. It is moved downward toward the rubber crawler 12 placed on the bed. Then, the rectangular frame-shaped lower end edge portion of the peripheral wall portion 34 of the processing tool 30 is pressed against the flatly developed inner peripheral surface of the band-shaped rubber 14 around the core metal 16.

The relative alignment of the processing tool 30 with respect to the rubber crawler 12 on the bed 29 may be performed, for example, manually, or for example, a sensor or image recognition for recognizing a through hole or shape provided in the rubber crawler 12. An automatic alignment mechanism for adjusting the horizontal position of the bed 29 may be adopted by using the above means.

Further, the rubber crawler waste treatment apparatus 10 of the present embodiment includes a gas type burner 50 as a heating means. The burner 50 blows a flame toward the inside of the peripheral wall portion 34 in a state where the lower end edge portion of the peripheral wall portion 34 of the processing tool 30 is in contact with the band-shaped rubber 14 of the rubber crawler 12 to blow the peripheral wall portion 34. It is possible to directly blow a heating flame onto the inner surface of the core metal 16 where the claw-shaped protrusions 18 and the like exposed from the band-shaped rubber 14 are present in the surrounding area formed by the portion 34. ..

Specifically, for example, as shown in FIG. 3, a support arm 52 projecting outward is fixed to a peripheral wall portion 34 (one short side wall portion 40) of the processing tool 30, and the support arm 52 is fixed to the peripheral wall portion 34 (one short side wall portion 40). The structure is such that the burner 50 is fixedly supported by the 52. The flame ejection port of the burner 50 is inserted into the peripheral wall portion 34 from diagonally above, so that the flame from the ejection port is ejected to the core metal 16 in the peripheral wall portion 34. The burner 50 is operated for a predetermined time to heat the core metal 16 when taking out one core metal 16, and is ignited and extinguished when the work of sequentially taking out a plurality of core metal 16 is performed. Therefore, an automatic ignition type that can quickly switch between ignition and extinguishing with a button, lever, timer, etc. is preferable.

However, the specific type and structure of the burner 50 are not limited, and for example, it is possible to employ a plurality of burners to eject flames from a plurality of spouts into the peripheral wall portion 34, and the processing tool 30 Instead of, the adapter 32 or the like may be used to support the burner 50. By supporting the burner 50 on the main body side of the adapter 32 and the press mechanism 20, the structure of the processing tool 30 can be simplified, and the replacement work of the processing tool 30 can be facilitated. Further, the support position of the burner 50 may be adjustable and changeable, or the flame ejection port of the burner 50 may be movable and adjustable by using a bellows tube or the like. Further, it is possible to direct the burner flame blown out from a plurality of mouths to appropriate parts, for example, when there are two claw-shaped protrusions 18 of the core metal 16 as shown in the figure, each claw-shaped protrusion. A burner flame may be blown to each of the 18s, or if an inner surface surface of the core metal 16 exposed at the central portion in the longitudinal direction of the core metal 16 is present, the burner flame may be blown to the portion.

Further, the rubber crawler disposal device 10 of the present embodiment includes a water injection mechanism 56 which is a fire extinguishing agent supply mechanism as a fire extinguishing means. The water injection mechanism 56 cools the band-shaped rubber 14 existing in the vicinity of the core metal 16 heated by the burner 50 by spraying water as a kind of digestive agent to extinguish the fire or prevent or eliminate combustion. It can be done.

Preferably, as shown in FIG. 3, the support arm 58 projecting outward is fixed to the peripheral wall portion 34 (short side wall portion 40 opposite to the support portion of the burner 50) of the processing tool 30. The support arm 58 has a structure in which the water injection pipe of the water injection mechanism 56 is fixedly supported. The discharge port of the water injection pipe of the water injection mechanism 56 is inserted into the peripheral wall portion 34 from diagonally above, so that water from the discharge port is ejected to the core metal 16 in the peripheral wall portion 34. ..

The band-shaped rubber 14 does not necessarily burn due to the heating of the core metal 16 when the core metal 16 is taken out. Even if it burns, it does not hinder the removal of the core metal 16, and avoiding or eliminating the burning of the band-shaped rubber 14 is mainly a countermeasure against adverse effects on the environment. Therefore, a fire extinguishing means such as the water injection mechanism 56 is not essential in the present invention. Further, even when the water injection mechanism 56 is adopted, since the operation of the water injection mechanism 56 (water injection operation) at the time of taking out the core metal 16 is generally stopped temporarily, water injection and stop are performed by a button or a lever or the like. It is desirable to be able to switch quickly and easily.

However, the specific type and structure of the fire extinguishing means are not limited, and for example, it is possible to provide a plurality of water injection ports or to use a digestive agent other than water, and the treatment tool 30 is the same as the burner 50. Alternatively, the water injection mechanism 56 may be supported by the adapter 32 or the like. By supporting the water injection mechanism 56 on the main body side of the adapter 32 and the press mechanism 20, the structure of the processing tool 30 can be simplified, and the replacement work of the processing tool 30 can be facilitated.

When the used rubber crawler 12 is disposed of by using the rubber crawler disposal apparatus 10 having the above-mentioned structure, first, as a pretreatment, the rubber crawler 12 is cut at a part on the endless circumference. Cut it open to make a long strip (unfolded strip).

After that, as shown in FIG. 1A, the rubber crawler 12 is placed on the support surface of the bed 29 of the rubber crawler disposal device 10, and the ground contact surface (running surface) is on the lower side. Then, the claw-shaped protrusion 18 of the core metal 16 is set so as to protrude upward.

Then, the rubber crawler 12 is attached to the processing tool 30 so that one core metal 16 faces downward with respect to the peripheral wall portion 34 of the processing tool 30 mounted on the press rod 26 of the rubber crawler disposal device 10. And relatively align.

After such alignment, the press mechanism 20 is operated so that the lower end peripheral edge of the peripheral wall portion 34 of the processing tool 30 is brought into contact with the upper surface of the band-shaped rubber 14 as shown in FIG. 1 (b). It is in a state of being. By igniting the burner 50, the flame is directed toward the core metal 16 at substantially the same time as when the peripheral wall portion 34 is brought into contact with the band-shaped rubber 14, that is, before, at the same time, or after the contact. Spout.

The state in which the flame of the burner 50 is blown onto the core metal 16 is shown in FIG. 7 (the flame can be seen). In a state where the flame of the burner 50 is blown onto the core metal 16 to heat the core metal 16, since the side of the core metal 16 is partitioned by the peripheral wall portion 34 of the processing tool 30, the amount of heat of heating by the burner 50 The diffusion of the core metal 16 can be suppressed and the heating of the core metal 16 can be efficiently performed.

The effect of suppressing the diffusion of the amount of heat of heating by the burner 50 can be exerted to some extent by partitioning at least a part around the core metal 16 by the peripheral wall portion 34. For example, only the front side wall portion 36 is made of band-shaped rubber. It may be pressed against the rubber strip 14, or at least one of the short side wall portions 40 may be pressed against the band-shaped rubber 14 in addition to the front side wall portion 36. However, in the present embodiment, the entire pair of long side wall portions 36, 38 and the short side wall portions 40, 40, that is, the lower end edges of the entire circumference of the peripheral wall portion 34 are brought into contact with the band-shaped rubber 14. In a state where the circumference of the core metal 16 is partitioned by the peripheral wall portion 34 over the entire circumference, the core metal 16 located inside surrounded by the peripheral wall portion 34 is heated by the burner 50.

In particular, by partitioning the circumference of the core metal 16 with a peripheral wall portion 34 over the entire circumference and heating the internal region, in addition to the effect of locally and efficiently heating the core metal 16 and the nearby strip-shaped rubber 14, the outside The effect of limiting the inflow of air (oxygen) from the rubber band 14 in the peripheral wall portion 34 to be heated can also be exhibited.

Further, a downward driving force (pressing) by the driving device 28 of the press mechanism 20 immediately before the heating of the core metal 16, at the same time as the heating, or after a predetermined time from the start of heating, or immediately after the heating of the core metal 16. Force) is applied from the press rod 26 to the processing tool 30. As a result, with respect to the strip-shaped rubber 14 located in the vicinity of the core metal 16, which is heated via the core metal 16 heated by the burner 50 or heated by being directly heated by the burner 50. Push in the tip edge of the peripheral wall portion 34. As a result, a notch 62 (see FIG. 8) extending substantially parallel to the strip rubber 14 along the edge of the core metal 16 in the longitudinal direction is formed.

The notch 62 is formed by pushing the front side wall portion 36 of the processing tool 30 into the strip-shaped rubber 14, but the strip-shaped rubber 14 is formed by heat transfer from the core metal 16 or by direct heating of the burner 50. Since the hardness of the portion is lowered, the peripheral wall portion 34 can be pushed into the band-shaped rubber 14 relatively easily and quickly to form the notch 62. In particular, the front side wall portion 36 is located close to the core metal 16 and can be directly heated and heated by the burner 50, and in the present embodiment, the peripheral wall portion 34 surrounds the entire circumference of the heating region by the burner 50. As a result, the notch target portion of the band-shaped rubber 14 and the peripheral wall portion 34 can be efficiently heated and heated, so that the work of pushing the peripheral wall portion 34 into the band-shaped rubber 14 to form the notch 62 can be performed more efficiently. Will be done.

The heating of the core metal 16 may be performed to such an extent that the adhesive force of the band-shaped rubber 14 to the core metal 16 is reduced and the hardness of the band-shaped rubber 14 in the vicinity of the core metal 16 is reduced. Although it depends on the material of the core metal 16 and the band-shaped rubber 14, the size of the core metal 16, etc., it is practical to set the heating time, etc. by taking out several core metal pieces 16 on a trial basis. Is possible. By the way, when the disposal treatment was actually performed on the rubber crawler 12 for agricultural machinery that adopted the iron-based metal core metal 16, the claw-shaped protrusion 18 of the core metal 16 was heated to the extent that it slightly became reddish. It was possible to take out the target core metal 16 without any trouble. Further, even when the core metal 16 is heated to the extent that it becomes red hot, the supply of air (oxygen) is suppressed because the band-shaped rubber 14 is not a material that easily burns and the heating region is partitioned by the peripheral wall portion 34. Because of this, combustion of the band-shaped rubber 14 hardly occurred, and at least the combustion of the band-shaped rubber 14 was not a problem.

However, in consideration of adopting the burner 50 and preparing for gas generation due to heating of the band-shaped rubber 14, it is desirable that the rubber crawler disposal device 10 is provided with an exhaust device 66 in the work area.

For example, as shown in FIG. 1, a blower intake port 68 is installed on one side of the press mechanism 20 across the work area (one leg side of the portal frame), and work is performed. On the other side of the area (the other leg side of the portal frame), a blower such as a compressed air outlet 70 or a fan that sends clean air toward the blower intake port 68 shall be installed. Therefore, it is desirable that the combustion gas, incomplete combustion gas, etc. generated in the work area, including hot air, be discharged from the work area, and if necessary, undergo gas purification treatment and then released into the atmosphere. Alternatively, an intake port of a duct is provided above the press mechanism 20, and after sucking the gas in the work area that has risen due to the temperature rise above, for example, gas purification using a catalyst, high temperature or combustion treatment is performed. It is also possible to provide various known gas purification devices such as gas purification.

By adopting the exhaust device 66 in such a work area, it is possible to secure a good environment for workers when the rubber crawler waste treatment device 10 is installed, for example, in a building.

Thus, after forming the target notch 62 in the band-shaped rubber 14 as described above, the press rod 26 of the press mechanism 20 is raised and the processing tool 30 is pulled out from the band-shaped rubber 14 and separated upward. Be urged. The depth dimension of the notch 62, in other words, the pushing depth of the peripheral wall portion 34 (particularly the front side wall portion 36) of the processing tool 30 into the strip-shaped rubber 14 is the core metal 16 in consideration of taking out the core metal 16. It is desirable to reach near the bottom surface of the core metal, reach the depth of the bottom surface of the core metal 16, or reach a depth exceeding the bottom surface of the core metal 16.

When the treatment tool 30 is separated from the band-shaped rubber 14, the peripheral wall portion 34 is removed from the heating region and air (oxygen) can be supplied to the heating region, so that the combustion state of the band-shaped rubber 14 in the heating region is generated. There is a risk of rubber or violence. If the combustion of the band-shaped rubber 14 becomes a problem, at that time, water injection by the water injection mechanism 56 is started as necessary, and water or the like as a digestive agent is poured into the heating region to achieve such a combustion state. Can be eliminated.

Further, in the present embodiment, when the peripheral wall portion 34 of the processing tool 30 is pushed into the strip-shaped rubber 14 at the time of forming the notch 62, the rear side wall portion 38 has a lower end edge with respect to the strip-shaped rubber 14 as compared with the front side wall portion 36. Although the push-in depth is reduced or hardly pushed in, the tip of the pressing protrusion 44 projecting from the rear side wall portion 38 is pushed into the band-shaped rubber 14. Then, the tip of the pressing protrusion 44 is brought into contact with the core metal 16 at a position deviated from the front side wall portion 36 side to the rear side wall portion 38 side in the lateral direction of the upper surface so as to be pushed further downward. It is pressed.

As a result, as the peripheral wall portion 34 of the processing tool 30 is pushed into the band-shaped rubber 14, the core metal 16 is tilted in the lateral direction, and the binding force is reduced by the notch 62 on one side in the lateral direction. (Front side wall portion 36 side) is displaced upward, and the other side (rear side wall portion 38 side) in the lateral direction to which the pressing force of the pressing protrusion 44 is applied is displaced downward. As a result, the core metal 16 is assisted in withdrawal from the band-shaped rubber 14, in combination with the fact that the adhesive force with the band-shaped rubber 14 is reduced due to the temperature rise and the hardness of the band-shaped rubber 14 is lowered. Will be promoted. Even when the water injection by the water injection mechanism 56 described above is executed, the core metal 16 is heated or tilted before the water injection, and the characteristic changes such as the hardening of the band-shaped rubber 14 are caused from the band-shaped rubber 14 of the core metal 16. Even if the core metal 16 is taken out after that, there is no big hindrance.

In this way, the core metal 16 whose adhesive force with the band-shaped rubber 14 is reduced is taken out from the band-shaped rubber 14 in the taking-out step. Such extraction processing can be performed using, for example, a crowbar-shaped extraction tool 74 provided with a longitudinal rod-shaped tip portion as shown in FIG.

The crowbar-shaped ejector 74 is made of a rigid material such as metal, and preferably has a long and thin tip like a spatula, and the tip portion is slightly curved or bent as needed. There is. Then, as shown in FIG. 8, the tip portion is manually inserted into the band-shaped rubber 14 from the notch 62, and the bottom side of the core metal 16 left in the band-shaped rubber 14 is utilized by the action of a lever or the like. The core metal 16 can be pulled out from the band-shaped rubber 14 by prying or pulling up the tip portion inserted into the rubber band 14. Actually, by using the crowbar-shaped ejector 74 having a length of about 50 cm, the core metal 16 could be taken out to the outside through the opened notch 62 without requiring a large force.

Alternatively, the removal process of the core metal 16 from the band-shaped rubber 14 is performed at the same time as the formation of the notch 62 after the tip portion of the peripheral wall portion 34 of the processing tool 30 is pushed into the band-shaped rubber 14 to form the notch 62 as described above. It is also possible to use the processing tool 30 inserted into the notch 62 as a take-out tool. That is, at the same time that the processing tool 30 is pulled up from the band-shaped rubber 14, the core metal 16 is locked to the processing tool 30 so that the core metal 16 is pulled up from the band-shaped rubber 14 together with the processing tool 30 as a take-out tool. It is also possible to carry out by extracting and separating.

Specifically, for example, in the peripheral wall portion 34 of the processing tool 30, the wall portions (a pair of long side wall portions 36, 38 and a pair of short side wall portions 40, 40) that face each other and form a pair are formed by the band-shaped rubber 14. The structure is such that the distance between the facing surfaces (internal dimension) is gradually reduced from the lower end to the upper side. As a result, the core metal 16 that enters the peripheral wall portion 34 as the peripheral wall portion 34 is pushed into the band-shaped rubber 14 is fitted between the wall portions that face each other and form a pair, and between the wall portions. The fitted core metal 16 can be pulled up from the band-shaped rubber 14 together with the processing tool 30 and taken out.

Alternatively, since the core metal 16 has a substantially long rectangular block shape having a certain thickness dimension in the vertical direction in FIG. 2, the peripheral wall portion 34 of the processing tool 30 is attached to the band-shaped rubber 14 as described above. By tilting the core metal 16 at the same time as pushing it in, the core metal 16 can be fitted so as to be caught between the front and rear wall portions 36, 38 which form a pair of the peripheral wall portions 34 facing each other. Then, the core metal 16 fitted between the wall portions can be pulled up from the band-shaped rubber 14 together with the processing tool 30 and taken out.

The core metal 16 taken out from the band-shaped rubber 14 in a state of being locked to the processing tool 30 by fitting to the peripheral wall portion 34 or the like exerts an impact using, for example, a hammer on the core metal 16 or the like. As shown in 9, it can be dropped from the processing tool 30 and detached.

By the disposal treatment as described above, in the present embodiment, one core metal 16 can be separated from the band-shaped rubber 14 and taken out from the rubber crawler 12. After taking out the core metal 16 as shown in FIG. 9, as shown in FIG. 10, the rubber crawler 12 is placed on the bed 29 by the buried pitch of the core metal 16 in the longitudinal direction of the band-shaped rubber 14. By moving the feed, the next core metal 16 is taken out in sequence.

The feed movement of the rubber crawler 12 can be performed manually, by using an intermittent feed device such as a moving belt, and if necessary, by sensing the position of the core metal 16 and below the adapter 32. It is also possible to automate the progressive operation of the rubber crawler 12 in synchronization with the take-out process of the core metal 16 by using the alignment mechanism together.

On the other hand, the core metal 16 taken out as described above can be cooled as needed and used as waste metal after undergoing a steelmaking process such as metal melting. Further, as shown in FIG. 11, the band-shaped rubber 14 has the core metal 16 which is a block-shaped metal piece removed. Therefore, for example, the band-shaped rubber 14 is cut as necessary to be a heat source material such as a fuel for a boiler. It is also possible to use it as.

In addition, some strip-shaped rubber 14 may remain in the removed core metal 16 in an attached state, and if such rubber residue becomes a problem, for example, it is simple with respect to the removed core metal 16. Can be incinerated. In such an incineration process, for example, some of the core metal 16 taken out may be put into a case that is driven to rotate and drive with fire resistance, and the flame of the burner may be sprayed on the core metal 16 to easily eliminate the rubber residue. be.

Although the embodiments of the present invention have been described in detail above, the present invention is not limitedly interpreted by the above-described embodiments or specific descriptions.

For example, in the above-described embodiment, an example of a mode in which the core metal 16 is sequentially taken out from the band-shaped rubber 14 is shown, but as shown in FIG. 12, a multiple-coupled (multiple-coupled) processing tool 80 is used. Therefore, it is possible to improve the efficiency of the work of taking out a plurality of core metal 16.

In such a processing tool 80, a plurality of peripheral wall portions 34 of the processing tool 30 exemplified in the above embodiment are arranged in the length direction of the short side wall portion 40 (the length direction of the strip-shaped rubber 14 to be processed), and a common bracket 42 is used. It is said that it has a structure that is integrally connected and fixed. The pitch between the adjacent peripheral wall portions 34, 34 is matched with the arrangement pitch of the core metal 16 in the rubber crawler 12 to be processed. Therefore, by attaching the multiple processing tool 80 to the press rod 26 of the press mechanism 20, the plurality of cores 16 continuously embedded and fixed in the length direction of the strip rubber 14 are respectively. A burner attached to each of the peripheral wall portions 34, in which each one of the plurality of peripheral wall portions 34 is in contact with the strip-shaped rubber 14 so as to surround the core metal 16 from above. The heat treatment can be performed by 50.

The pitches of the plurality of peripheral wall portions 34 are accurately set by using the caliper 84 shown in FIG. 12 so as to accurately match the pitches of the plurality of core metal 16. Further, in the processing tool 80 provided with the multiple peripheral wall portion 34 shown in FIG. 12, a support arm 58 for fixing the water injection mechanism 56 is provided to the shared bracket 42. For example, the water injection pipe branched from the water injection pipeline supported by the support arm 58 may be branched and arranged so as to open toward the inside of each peripheral wall portion 34.

Further, the multiple processing tool 80 illustrated in FIG. 12 is provided with a peripheral wall portion 34 corresponding to one of each core metal 16, but for example, two or more continuous strip-shaped rubbers 14 in the length direction. An area for arranging a plurality of cores 16 by adopting a peripheral wall portion having a size twice or three times or more in the length direction of the strip rubber 14 so as to surround the area for arranging three or more cores 16 as a whole. It is also possible to use a processing tool provided with a peripheral wall portion that surrounds the rubber at the same time. In such a treatment tool, it is possible to provide a heating device such as a burner for each of the plurality of core metal 16 existing in the common peripheral wall portion, but the plurality of core metal 16 is simultaneously heat-treated by one heating device. You may do so.

Further, when a mechanism for inducing heating (electromagnetic induction heating, high frequency induction heating) of the core metal is adopted as the heating means instead of the burner of the above embodiment, the induction coil is placed close to the surface of the core metal 16. For example, the induction coil can be supported by the peripheral wall portion 34 by using the processing tool 30. If the induction coil is supported in an electrically insulated state close to the core metal 16 on the inner peripheral side of the peripheral wall portion 34, it is not necessary to cut the rubber crawler in advance on the cutting piece having one of the core metal 16. It is also possible to arrange the induction coils close to each other so as to surround the gold 16. Further, it is also possible to induce and heat at least the tip portion of the peripheral wall portion 34 of the processing tool 30 by an induction coil that induces and heats the core metal 16 or by another induction coil. Although the band-shaped rubber 14 around the core metal 16 cannot be directly heated by induction heating, the adjacent band-shaped rubber 14 can be heated by heat transfer from the heated core metal 16 or the peripheral wall portion 34. Furthermore, instead of or in addition to the induction coil located around or above the core metal 16, the induction coil facing the lower surface of the core metal 16 may be installed on the surface of the bed 29, for example.

Further, it is not always necessary to form a notch by the peripheral wall portion, and it is also possible to form a notch by inserting a cutting edge such as a cutter into the band-shaped rubber 14 before or after softening by heating, for example. Even when the processing tool 30 provided with the peripheral wall portion 34 that also serves as a means for forming the notch as in the embodiment is adopted, it is also possible to adopt only the front side wall portion 36 that forms the notch. However, when the core metal 16 is taken out from the notch by using a lever-shaped take-out tool or the like, the front side wall portion 36 and the short side wall portions 40, 40 are connected in succession in consideration of ease of take-out. It is preferable to form a U-shaped notch. Although it is possible to continue to the rear side wall portion 38, the band-shaped rubber around the core metal 16 is partially cut out so that the band-shaped rubber 14 in the portion covering the core metal 16 is not cut out after the core metal 16 is taken out. It is desirable to leave the 14 in a connected state. For example, the rear side wall portion 38, which is one side of the periphery, should not be cut or the cutting depth should be made shallow so that the band-shaped rubber 14 is positively connected. Is desirable. It is possible to provide the rear side wall portion 38 so as not to cut into the band-shaped rubber 14, or to provide the rear side wall portion 38 by pushing only the pressing protrusion 44 without providing the rear side wall portion 38. On the other hand, particularly in the above-described embodiment, the pressing protrusion 44 is positioned unevenly in the long side direction, so that the core metal 16 is tilted and twisted not only in the lateral direction but also in the longitudinal direction. As a result, it is further hooked on the peripheral wall portion 34 to be in a fitted state, and it is also designed so that it can be easily taken out from the band-shaped rubber 14 together with the processing tool.

In addition, although not listed one by one, the present invention can be carried out in an embodiment in which various changes, modifications, improvements, etc. are added based on the knowledge of those skilled in the art, and such an embodiment is the present invention. Needless to say, all of them are included in the scope of the present invention as long as they do not deviate from the gist of the present invention.

10 Rubber crawler disposal device 12 Rubber crawler 14 Band-shaped rubber 16 Core metal 18 Claw-shaped protrusion 20 Press mechanism 22 Leg 24 Beam 26 Press rod 28 Drive 29 Bed 30 Processing tool 32 Adapter 34 Peripheral wall 36 Long side wall ( Front side wall)
38 Long side wall part (rear side wall part)
40 Short side wall 42 Bracket 44 Pressing protrusion 50 Burner 52 Support arm 56 Water injection mechanism 58 Support arm 62 Notch 66 Exhaust device 68 Intake port 70 Air outlet 74 Extraction tool 80 Processing tool (multiple installation)
84 caliper

Claims (12)

A method for disposing of a rubber crawler in which an elongated core metal extending in the width direction of the strip rubber is embedded and fixed at predetermined intervals in the length direction of the strip rubber.
Along with heating the core metal, a notch is formed in the band-shaped rubber along the end portion of the core metal in the length direction, and the core metal is removed from the band-shaped rubber by a take-out tool inserted into the notch. A method for disposing of rubber crawlers, which is characterized by being extracted and separated. The method for disposing of a rubber crawler according to claim 1, wherein the notch is formed in the rubber band by pushing the notch into the rubber band. The notch is formed along one end of the core in the length direction of the strip rubber, and the core is pressed from the outside on the other end side of the core. The method for disposing of a rubber crawler according to claim 1 or 2, wherein the core metal is tilted in the length direction of the strip-shaped rubber so that the forming side of the notch is relatively raised. The method for disposing of a rubber crawler according to any one of claims 1 to 3, wherein the core metal is heated by a burner. The method for disposing of a rubber crawler according to claim 4, wherein the core metal is heated by the burner with a partition wall provided around the core metal. The method for disposing of a rubber crawler according to claim 5 , wherein the partition wall is pushed into the strip-shaped rubber to form the notch in the strip-shaped rubber . The method for disposing of a rubber crawler according to any one of claims 1 to 6, wherein a fire extinguishing agent is poured into the band-shaped rubber when the core metal is extracted from the band-shaped rubber. Any one of claims 1 to 7, wherein the core metal is heated and the notch is formed in the band-shaped rubber in parallel with a plurality of core metal continuously arranged in the length direction of the band-shaped rubber. The method for disposing of the rubber crawler described in the section. A rubber crawler disposal device in which an elongated core metal extending in the width direction of the strip rubber is embedded and fixed at predetermined intervals in the length direction of the strip rubber.
A heating mechanism that heats the core metal and
A cutting means for forming a cut in the strip rubber along the lengthwise end of the strip rubber in the core metal, and a cutting means.
A rubber crawler disposal apparatus comprising: an extraction means inserted into the notch of the strip-shaped rubber to extract and separate the core metal from the strip-shaped rubber. The cutting means
A notch that has a notch tip edge extending along the lengthwise end of the strip of rubber in the core metal and is movable in the approaching and separating directions with respect to the strip of rubber.
9. The claim 9 has a pressing mechanism that exerts a pressing force on the notch in the approaching direction to the band-shaped rubber to push the notch tip edge of the notch into the band-shaped rubber. The rubber crawler disposal device described in. An elongated core metal extending in the width direction of the band-shaped rubber with respect to the band-shaped rubber is a disposal tool for a rubber crawler embedded and fixed at predetermined intervals in the length direction of the band-shaped rubber.
It is provided with a peripheral wall portion arranged around the core metal.
One of the side wall portions facing each other in the length direction of the strip-shaped rubber with the core metal sandwiched in the peripheral wall portion is a cut-forming portion that is pushed into the strip-shaped rubber to form a notch.
The other side of the both side wall portions in the peripheral wall portion is characterized by having a pressing protrusion that projects toward the inner peripheral side and exerts a pressing force from the outside on the end portion of the core metal. Rubber crawler disposal tool. In the peripheral wall portion
The notch forming portion on one of the side wall portions facing each other in the length direction of the strip-shaped rubber with the core metal sandwiched therein.
The rubber crawler disposal tool according to claim 11, wherein the tip portion toward the contact side with the band-shaped rubber is projected as compared with the other of the both side wall portions.

Images