JPH0685800U - Dismantling device - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a dismantling device that can dismantle various objects such as scrap engines and old tires safely and efficiently by mechanical power of the same device. A pair of openable and closable arms provided in a vehicle body portion that can be opened and closed in a horizontal direction; a hand attachment seat facing between the pair of openable and closable arms provided at each tip of the openable and closable arms;
A pair of work hands that are fixed to the mounting seat so that they can be exchangeably faced and fixed, and that sandwiches an object to be dismantled, such as an engine or a tire; And an opening and closing work tool having a plurality of opening and closing claws for feeding the disassembly object between the work hands and grasping and pulling apart parts of the disassembly object sandwiched between the work hands. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dismantling device, and more particularly to a steerable dismantling device for dismantling an engine, an old tire, or the like of a scrap automobile.

[0002]

[Prior art]

 In the conventional scrap automobile dismantling work, after removing the wheel and engine and other parts, the body and chassis are pressed to make a compression block, the engine is manually removed transmission parts, and the old tire is manually or exclusively used. The tire wheel separator is used to separate tires and wheels, and good tires are recovered as recycled tire raw materials.

In recent years, various raw materials have been recovered from scrap due to lack of resources, and among them, relatively expensive aluminum is particularly popular.

In recent years, many aluminum alloys are used for engines in automobiles in order to reduce the weight of the vehicle body. When disposing of automobiles as scrapped vehicles, the engine taken out from scrap automobiles is put into a heating furnace. The aluminum is then recovered by heating it above the aluminum melting temperature.

At this time, conventionally, after removing accessories such as a dynamo, a compressor, various electric components, a muffler, an air cleaner, a carburetor, etc. on the outer surface of the engine by manual work or mechanical work, the entire engine body is completely removed in the melting furnace. Then, the aluminum is recovered from the furnace by heating it to the melting temperature or higher.

On the other hand, with regard to old tires, there is a demand for resource recovery, and in order to remove tires from the wheels as recycled tire resources, they are processed by hand or by a dedicated machine one by one.

[0007]

[Problems to be solved by the device]

 As mentioned above, most of the conventional scrap car dismantling is done by hand or by a dedicated machine, the engine needs a work tool or machine dedicated to the engine, and the tire needs a tool or machine dedicated to the tire. there were.

Further, in recent automobile engines, most of the engine housings are made of aluminum die cast in order to reduce the weight and improve the moldability, and the internal pistons and crank shafts are made of a strong iron alloy. . Therefore, when recovering aluminum from such engine scrap, in the melting furnace, metal parts having a melting point higher than that of aluminum are simply heated and taken out from the furnace as it is. Since it consumes heat energy, it has the drawback of increasing the fuel cost of the furnace.

[0009] Furthermore, since old tires are processed one by one by manual work or by a dedicated machine to recover recycled tire resources, five old tires including spare tires are usually produced from one automobile. Even if the tires are crushed in the radial direction and the tires are crushed in a radial direction without being able to catch up with the enormous amount, the wheels may be deformed and removed regardless of whether the tires are cut off, or even if some recovery of recycled tire resources is given up. It was necessary to secure mass disposal.

The present invention has been made in view of the above point, and realizes a device that can disassemble various objects such as a scrap engine and an old tire safely and efficiently by mechanical power of the same device. Efficiently separating and dismantling dissimilar metal parts, for example, only the aluminum parts of the engine can be put into the blast furnace to improve the thermal efficiency, and the wheels of old tires can be separated without damaging the tires. It is an object of the present invention to provide a dismantling device as described above.

[0011]

[Means for Solving the Problems] In a disassembling apparatus according to a device of claim 1 of the present application, in order to solve the above-mentioned problems, a disassembling apparatus including various work tools in a body part of a self-propelled work vehicle. A pair of opening / closing arms that can be opened / closed in the horizontal direction by a hydraulic operation in which a tip provided on the vehicle body is opened / closed and a pair of the opening / closing arms provided on each tip of the opening / closing arm face each other. A hand mounting seat, a pair of work hands that are fixed to the mounting seat so that they can be exchangeably faced and fixed to each other, and that sandwiches an object to be dismantled, such as an engine or a tire, so that it can swivel and lie on the vehicle body. An opening / closing operation that has a plurality of opening / closing claws that are provided at the tip of the boom and that feed the dismantled object between the work hands and grasp and pull the parts of the disassembled object that are sandwiched between the work hands. It is obtained by a tool.

In the disassembling apparatus according to a second aspect of the present invention, facing recesses for holding the disassembling object therebetween are provided at each tip of the opening / closing arm, and the hand is provided at a peripheral edge of the recess. A mounting seat is formed.

In the disassembling apparatus according to the third aspect of the present invention, each of the pair of work hands has a concave shape facing each other at each tip of the opening / closing arm.

In the disassembling apparatus according to a fourth aspect of the present invention, each of the pair of work hands has a convex shape facing each other at each tip of the opening / closing arm.

In the disassembling apparatus according to a fifth aspect of the present invention, the pair of work hands have male and female concavo-convex shapes that face each other at each tip of the opening and closing arms.

In the disassembling apparatus according to the invention as defined in claim 6, when the tips of the opening and closing arms are brought close to each other in the pair of work hands, a supporting surface having a gap in substantially the center between the tips of the arms is formed. Each is equipped with a horizontal table half member.

In the disassembling apparatus according to the invention as set forth in claim 7, the gap at the center of the supporting surface has a width larger than the outer diameter of the wheel fitted to the tire with the tire placed on the supporting surface, The mutually facing upper edges of the horizontal table half members can bite substantially horizontally into the disc side rim of the tire wheel placed on the support surface when the opening and closing arms are driven in the closing direction. It has an edge shape.

[0018]

[Action]

 In the disassembling apparatus according to the invention as set forth in claim 1, the work hand is fixed to the mounting seat at the tip of the opening / closing arm, and the object to be disassembled, for example, a scrap engine, is grasped by the opening / closing work tool at the tip of the boom to open / close the arm tip It is placed between a pair of work hands, and the boom and open / close work tool are operated from the driver's seat of the work vehicle to adjust the desired direction and position, and the open / close arm is driven in the closing direction to move the tip Grip the engine from both sides with a working hand, and in this state grasp parts such as the dynamo attached to the engine with the opening / closing work tool at the end of the boom and pull it apart. During this time, if the clamping by the opening / closing arm is loosened, the engine can be rotated around the axis connecting the clamping points by the operation of the boom and the opening / closing work tool to change the posture. The accessory parts can be easily and efficiently removed by linking the boom with the opening / closing work tool.

Further, if an aluminum product such as an engine cylinder head is firmly sandwiched by an opening / closing operation tool at the end of the boom, it can be cracked from the cast iron portion and taken.

Furthermore, in the case where a concave portion facing each other according to claim 2 is provided at the tip of the opening / closing arm and the hand mounting seat is formed on the periphery thereof, the concave portion itself provides a supporting surface for clamping the engine or the like. Therefore, the clamping operation can be performed without the work hand attached.

When a work hand having a concave or convex shape facing each other according to claim 3 or 4 or 5, is attached to each of the attachment seats at the tip of the opening / closing arm, the opening / closing operation is performed with respect to the disassembly object sandwiched between the work hand tubes. By strongly pinching the arm by hydraulic operation, intensive strong reduction can be applied to the location, which causes a fracture at the stress-concentrated location of the object, and the fracture can be divided from there. For example, in an automobile engine, if strong pressure is applied to the boundary between the engine body housing and the mission case, or the engine body housing and the cylinder head cover, these will be easily broken at the boundary, and therefore if they are separated at the joint of dissimilar metals. , These dissimilar metals can be recovered separately. The separated pieces of the component may be handled by grasping them with the opening / closing work tool at the tip of the boom, and the work of breaking the small portion of the crack residue may be performed by the opening / closing work tool itself.

In particular, in the disassembling apparatus according to the fifth aspect, as the working hands, those having male and female concavo-convex shapes facing each other are fixed to the mounting seat at the tip of the opening / closing arm, and the object is held between the two working hands. It is pinched strongly and the object is destroyed by buckling.

The disassembling apparatus according to claims 6 and 7 is particularly suitable for tire wheel separation work, and this is also realized by exchanging the work hand. That is, if a work table with a horizontal table half member is fixed to the mounting seat at the tip of the opening / closing arm, a support surface with a gap in the center is formed between the arms when the opening / closing arm is properly closed. . Grip an old tire with a tool for opening and closing the boom tip, and lay it flat on the ground so that the disc side of the disc wheel faces down, and the rim part of the disc wheel on the disc side should fit into the gap. Align the tires. Then, hydraulically operate the boom and the opening / closing work tool, keep the opening / closing work tool open slightly larger than the outer shape of the wheel, slightly press the tire at the target position on the outside of the wheel, and close the opening / closing work tool. As a result, the rim portion on the side of the open end of the drum facing upwards of the disc wheel is pushed in from the outside toward the center to be deformed, and this deformation is caused at a plurality of positions in the circumferential direction of the wheel, so that substantially The drum is deformed so that the contour of the rim side drum fits inside the rim inner hole of the tire. After that, since the open end side of the wheel drum has already been deformed to a reduced diameter, push the wheel downward from the gap in the center of the support base against the tire with the boom and opening / closing work tool, and separate the separated tire and wheel. To carry out.

[0024] Here, in the invention according to claim 7, since the upper edge of the horizontal table piece member is formed in the edge shape, the wheel of the old tire placed on the support base in alignment with the hole is When the open / close arm is further closed with the opening / closing work tool being pressed from above and the disc-side rim located under the wheel being lower than the upper edge of the gap, the edge shape of both horizontal table half members The upper edge bites into and grips the disc-side rim portion on the lower side of the wheel, which is pushed down into the gap, and therefore, after the same inward deformation on the wheel drum side as described above, by the opening / closing work tool. You can also separate the wheel by pulling up the tire.

[0025]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view showing a configuration of a preferred embodiment of the present invention, FIG. A is an external view of a main body, and FIG. B is a partial perspective view showing one operating state of an opening / closing work tool. In the figure, reference numerals 10, 12, 14, 16, 18 are components similar to those of a known swivel work vehicle used for a shovel car and the like, and 10 and 12 are a first arm and a second arm constituting a boom. It is a boom and can be moved up and down by hydraulic pressure. Reference numeral 14 denotes an upper body structure of the work vehicle, which is rotatably mounted on a lower body structure capable of traveling by a caterpillar 16, and the first arm 10 is pivotally supported near the center thereof. . Further, in a part of the upper structure 14, there is provided a cockpit 18 for a human being to enter and control.

Reference numeral 20 denotes an earth-discharging plate with a bracket provided on the front portion of the work vehicle so as to be vertically movable by two arms 22, and a pair of brackets 21 on the front surface of the earth-discharging plate 20 are paired by pivot shafts 26, respectively. The open / close arm 24 is attached so that the tip end of the open / close arm 24 can be opened and closed left and right by hydraulic operation from the cockpit 18. In this case, the shaft hole at the base of each arm 24 through which the pivot shaft 26 penetrates is formed in an elliptical hole shape with a predetermined angle so that the tip of each opening / closing arm moves as parallel as possible according to the opening / closing operation. Is good.

The tip of each opening / closing arm 24 is formed as a concave portion 25 facing each other and a hand attaching seat 27 on the periphery thereof. The hand attaching seat 27 has various kinds of work as shown in FIGS. 2 to 4 described later. The hand is detachably fixed. FIG. 2 is a perspective view showing a clamping work hand, and FIGS. A to E show specific examples of the work hand.

That is, in the example of FIG. 1, since the tip ends of the opening / closing arms 24 are formed in the recesses 25 facing each other, it is possible to directly sandwich the object to be disassembled by the recesses 25. Since there is a risk of damaging the mounting seat 27, it is preferable to perform a disassembly work by mounting a work hand for clamping work as shown in FIGS. 2A to 2E on the mounting seat 27 with bolts.

The work hand 28a shown in FIG. 2A is a circular one having a mortar-shaped recess, the work hand 28b shown in FIG. 2B is a square one having a valley-shaped recess, and a work hand shown in FIG. The dope 28c is a square type having an inverted pyramid-shaped recess, the work hand 28d shown in Fig. D is a square type having a grooved valley-shaped recess, and the work hand 28e shown in Fig. E is a valley-shaped work hand. It is a square type in which the central part of the recess is a smooth concave surface and both sides are concave.

In this embodiment, the mounting seat 27 and the square working hands 28a to 28e are mounted by bolt holes at equal angular intervals on the square mounting surface. Therefore, the mounting seat 27 is attached to the working hands 28a to 28e. It can be installed by changing the orientation by 90 degrees or 180 degrees. Further, these work hands 28a to 28e have a supporting surface including a concave portion on the front surface, and when they are attached to the tip ends of the opening and closing arms on both sides and the object to be disassembled is sandwiched between them, the clamping pressure can be slightly relaxed. For example, the object to be disassembled can be rotated by an external force around the axis passing between the sandwiching points while the object to be disassembled is clamped, but the work hand itself can be driven to rotate by remote control. May be provided.

Another example of a work hand that is exchangeably fixed to the mounting seat 27 is shown in FIGS. 3 and 4. FIG. 3 is a perspective view showing various examples of the crushing work hand. FIG. 4 is an explanatory view of an opening / closing arm to which a work hand is attached, FIG. A is a perspective view showing a work hand for separating a tire wheel described later, and FIG. 4B is a partially enlarged sectional view showing a taper edge.

That is, FIGS. 3A to 3C show various examples of the work hand for strongly pressing the disassembly object from both sides at the tip of the opening / closing arm to divide it by stress concentration or buckling. In FIG. 3, the working hand 28f has a male ram shape having a substantially triangular prism shape, the working hand 28g has a female ram shape corresponding to the male ram shape, and the working hand 28h is the male ram shape. The center of the ridgeline portion of the shape is a concave portion, the working hand 28i is the one in which the central portion of the ridgeline portion is convex, the working hand 28j is a plurality of triangular protrusions formed as an example, and the working hand 28k is a plurality of The triangular protrusions are formed in two rows. The attachment parts of these work hands to the attachment seat 27 have the same common structure, and even if the ends of the pair of opening / closing arms 24 have the same shape on both sides, or 28f and 28g, 28h and 28i, 28j and 28k. Each combination of may be easy to install.

Further, as shown in FIG. 4, the work hand 28m has a horizontal table half member 283 fixed to a mounting portion 281 by a reinforcing member 282, and faces the tip ends of the open / close arms on both sides. The front edge portions 284 of the table, which face each other when they are attached to each other, have a tapered edge shape with an acute angle on the upper surface side as shown in an enlarged cross section in FIG. 4B.

The opening / closing operation of the opening / closing arm 24 is performed remotely from the inside of the cockpit 18 so that an object to be disassembled, for example, an automobile engine (not shown) can be clamped and strongly pressed from both left and right sides. When the work vehicle is moved, the tip of the opening / closing arm 24 can be lifted up by a predetermined height by the arm 22 or the boom opening / closing work tool 30 described below.

The opening / closing work tool 30 attached to the tip of the boom (10, 12) can rotate around the boom axis to change its direction. The opening / closing work tool 30 brings in a dismantling object such as an engine between the tip ends of the opening / closing arm 24, and the opening / closing arm 24 tears off the unnecessary parts holding the object to change the direction and position of the object, and It is for pressing a tire part or a wheel part, grasping a tire wheel or the like and deforming it to a reduced diameter, or sandwiching and breaking a small article, and in the example shown in the figure, it is operated by hydraulic pressure from the cockpit 18. Although there are provided four opening / closing claw portions 32 and 34 which are opened and closed by each other, they may have two or three or other numbers of opening / closing claw portions.

In FIG. 1, the pair of front / rear opening / closing claws 32 and the pair of left / right opening / closing claws 34 are driven to be opened / closed by hydraulic cylinder devices 33 and 35 that can be operated simultaneously or independently. Is supported by the integral support assembly 38 at the tip of the boom so that the turning direction can be variably controlled.

Next, the operation of the above embodiment will be described. First, in the case of dismantling of the engine, one of the work hands 28 shown in FIGS. The opening / closing work tool 30 is positioned directly below the engine (not shown) that is taken out from the vehicle in advance by opening it larger than the size and turning the upper vehicle structure 14 and vertically moving the booms (10, 12). After that, as shown in FIG. 1B, while holding the left and right opening and closing claws 34 of the opening and closing work tool 30 in an open state, grasp the engine with the opening and closing claws 32 on the front and rear of the tool 30. The engine is carried between the work hands 28 at both ends of the opening / closing arm 24, the opening / closing arm 24 is closed, and the engine is lightly clamped by both the working hands.

Then, after operating the booms 10 and 12 and the opening / closing work tool 30 to bring the engine to an appropriate posture, the holding pressure of the opening / closing arm 24 is increased to strongly hold and fix the engine by the work hands 28 on both sides. Then, use the work tool 30 to tear off and remove the carburetor, pump, compressor, dynamo, and other parts attached to the engine.

After that, the work hand is exchanged to one shown in FIG. 3, and when the desired position for cutting the engine is clamped by the hydraulic operation of the opening / closing arm 24 from both the left and right sides, the engine is strongly pressed. It will crack and the engine housing will fall apart.

The divided engine parts are classified into aluminum and cast iron, and this work can be performed using the opening / closing work tool 30. At this time, the divided engine may be pushed by the earth discharging plate 20 to be moved to another place.

In this way, in the apparatus of this embodiment, only the aluminum products among the disassembled engine parts can be selected and put into the blast furnace, and therefore, the temperature is close to the melting point of aluminum (660 ° C.) and the heat efficiency is high. It can be melted and finally poured into a mold, then molded into an ingot and recovered.

Next, the case where the tire wheel is separated according to the above-mentioned embodiment will be described with reference to FIGS. 1 and 4 and FIGS. 5 and 6 showing the work procedure thereof. FIG. 5 is an explanatory view of a procedure of tire wheel separation work according to the present invention, and FIGS. A to D show cross sections of respective steps. FIG. 6 is an explanatory view showing how the wheel is deformed by the opening / closing work tool, and FIGS. A to C show how the number of opening / closing claws of each wheel is deformed.

First, as shown in FIG. 4, working hands 28m each having a horizontal table half member 283 are attached to the mounting seats 27 at the ends of the open / close arms 24, and the size of the tire wheel to be separated is set. Accordingly, the opening angle of the opening / closing arm 24 is determined, and a gap (hole G, FIG. 4) slightly larger than the outer shape of the wheel is formed between both table half members 283. Next, the opening / closing work tool 30 is positioned right above the pile of old tires by turning the upper vehicle structure 14 and operating the booms 10 and 12 up and down, and then the four claws 32, A single old tire is grabbed from the surroundings using all of 34 and carried on the tire supporting surface S formed by both table half members 283 of the work hand 28m attached to the tip of the opening / closing arm.

Then, by operating the booms 10 and 12 and the opening / closing work tool 30, the old tire is aligned right above the hole G and laid flat as shown in FIG. 5A. In FIGS. 5A to 5D, the old tire is shown as a drop center type disc wheel h and a tire t attached thereto.

Next, the claws 32 and 34 of the opening / closing work tool 30 are once opened to change the positions, and the claws 32 and 34 are closed and placed on the wheel h of the tire t on the support surface S. As shown in FIG. 2B, the wheel h is pressed from the drum open end side of the wheel h from above and the disc side rim portion on the lower surface side is held in the hole G. If the opening / closing arm 24 is hydraulically driven in this state in the closing direction, the taper edge 284 of the table front edge where the hole G faces as shown in FIG. 2C causes the disc h rim of the wheel h and the tire bead portion to be separated from each other. It is inserted into the gap, which anchors the wheel h to the support surface S on the hole G by the elastic action of the tire t.

After that, the opening / closing claws 32, 34 are opened to change the position, the rim part of the wheel h on the drum open end side is grasped by the respective claws from the outside, and the opening / closing claws 32, 34 are directly subjected to hydraulic pressure. Therefore, it closes strongly. As a result, the drum open end side of the wheel h is pushed inward at four peripheral points as shown in FIG. 5D, and the wheel h drum rim on the drum open end side is pushed as shown in the right side view of FIG. 6A. The part is deformed into a reduced diameter. From this state, the claws 32 and 34 are closed and lowered to push the wheel h from above, or again, as shown in FIG. 5A, the tire t is held by the open / close claws 32 and 34 from the outside. The wheel h is separated from the tire t by pulling up and flowing down, and only the wheel h falls downward from the hole G. The tire t is transported to a predetermined place while being gripped by the opening / closing work tool 30. Further, the dropped wheel h may be later picked up by the opening / closing work tool 30 and carried out to a predetermined accumulation place.

The above-mentioned work using the tapered edge 284 is particularly effective when the tire and the wheel are firmly fixed and difficult to separate, but if not, simply without closing the opening / closing arm 24, The opening / closing claw portions 32, 34 may crush the rim portion of the wheel h on the drum opening side inward.

Further, the shape of the tapered edge 284 is not limited to the triangular concave shape shown in the figure, and various shapes such as a half-moon arc concave shape and a sawtooth blade-like shape can be selected.

In the above-described embodiment, each of the claw portions 32 and 34 of the rear part 30 for opening and closing work has a four-piece construction, but in the case of a three-piece construction, the above-mentioned reduced diameter deformation is shown in FIG. 6B. As shown in FIG. 6C, in the case of the two-piece structure, it may be deformed once, and then the claw and the wheel may be relatively rotated by 90 degrees to be deformed again. Of course, it is also possible to make modifications using other numbers and shapes of claws.

[0050]

[Effect of device]

 As described above, according to the present invention, since the hydraulic operation opening / closing arm capable of exchangeably fixing various work hands is provided in the front part of the swing work vehicle having the opening / closing work tool at the tip of the boom, different types of This has the effect of efficiently disassembling an automobile engine containing mixed metal parts, making it easy to separate and collect specific metals, and to significantly improve the work safety and efficiency.

Further, according to the present invention, not only the dismantling of the engine but also the tire-wheel separation work can be performed. In that case, the old tire is grasped and placed at the work position, the tire and the wheel are separated, and further separated. Most of the work of unloading tires and wheels can be done remotely by hydraulically opening and closing work tools, and it is possible to work safely and efficiently without directly touching dirty old tires. In addition, the tire is not damaged or damaged because it does not give a large force or deformation to the tire, and it can be effectively utilized as a recycled tire resource.

[Brief description of drawings]

1 is a perspective view showing a configuration of a preferred embodiment of the present invention, FIG. A is an external view of a main body, and FIG. B is a partial perspective view showing one operating state of an opening / closing work tool.

FIG. 2 is a perspective view showing a clamping work hand, and FIGS.
FIG. E shows an example of a specific work hand.

FIG. 3 is a perspective view showing various examples of a crushing work hand.

FIG. 4 is an explanatory view of an opening / closing arm to which a work hand is attached, FIG. A is a perspective view showing a work hand for separating a tire wheel, which will be described later, and FIG. 4B is a partial enlarged sectional view showing a taper edge.

FIG. 5 is an explanatory view of a procedure of tire wheel separation work according to the present invention, and FIGS.

FIG. 6 is an explanatory view showing how the wheel is deformed by the opening / closing work tool, and FIGS. 6A to 6C show how the number of opening / closing claws of each wheel is deformed.

[Explanation of symbols]

 10, 12 ... Boom (first and second arms), 14 ... Upper body structure, 18 ... Cockpit, 20 ... Earth plate with bracket, 24 ... Opening / closing arm, 26 ... Pivot shaft, 27 ... Hand mounting seat, 28a to k, m ... Working hand, 283 ... Horizontal table half member, 30 ... Opening / closing work tool, 32, 34 ... Opening / closing claw part

Claims (7)

[Scope of utility model registration request] 1. A dismantling device provided with various work tools on a vehicle body portion of a self-propelled work vehicle, wherein a pair of opening / closing devices that can be opened / closed in a horizontal direction by a hydraulic operation in which a tip provided on the vehicle body portion is driven to open / close and pressurize. An arm, a hand mounting seat facing each other between the pair of opening and closing arms provided at each tip of the opening and closing arm, and a disassembly target such as an engine or a tire that is provided so as to be interchangeably faced to the mounting seat and fixed. A pair of work hands that sandwich an object, and a boom tip that is provided on the vehicle body so as to be able to swivel and lie up and down, send the disassembly object between the work hands, and disassemble the object to be sandwiched between the work hands. A disassembling apparatus, comprising: an opening and closing work tool having a plurality of opening and closing claws for grasping and tearing parts of an object. 2. A facing concave portion for holding the object to be disassembled is provided at each tip of the opening / closing arm,
The disassembling apparatus according to claim 1, wherein the hand attachment seat is formed on a peripheral edge of the recess. 3. The disassembling apparatus according to claim 1, wherein each of the pair of work hands has a concave shape facing each other at each tip of the opening / closing arm. 4. The disassembling apparatus according to claim 1, wherein each of the pair of work hands has a convex shape facing each other at each tip of the opening / closing arm. 5. The disassembling apparatus according to claim 1, wherein the pair of work hands have male and female concave and convex shapes facing each other at each tip of the opening and closing arms. 6. A pair of work hands each have a horizontal table half member that forms a support surface having a gap in substantially the center between the arm tips when the tips of the opening and closing arms are brought close to each other. The disassembling apparatus according to claim 1. 7. The upper part of the horizontal table half member facing each other has a width larger than an outer diameter of a wheel fitted to the tire when the tire is placed on the support surface. 7. The edge has an edge shape capable of biting substantially horizontally into a disk-side rim of a wheel of a tire placed on the support surface when the opening / closing arm is driven in a closing direction. Dismantling device according to.