JP2013151187A - Swing mechanism, tire removing device, and tire removing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently remove a tire stored inside a big tire while inhibiting damage to each tire during removing work.SOLUTION: A tire fixing part 1 fixes a first tire 310 so that the cross direction of the first tire corresponds to the extending direction of an arm part 21. A moving mechanism part moves the arm part 21 in the cross direction and the radial direction of the first tire so that a claw part 20 is inserted between a bead part of the first tire and a bead part of a second tire 320 and the inserted claw part 20 is rotated with the movement of the arm part 21 to abut on a site including a tread of the second tire. The moving mechanism part moves the arm part 21 in the inner-diameter direction of the first tire to expose the site of the second tire on which the claw part 20 abuts, from an opening of the first tire, and the moving mechanism part moves the arm part 21 in the cross direction of the first tire to isolate the site of the second tire on which the claw part 20 abuts, from the first tire. Then, the second tire is removed from the inside of the first tire.

Description

  The present invention relates to a swing mechanism, a tire take-out device, and a tire take-out method for taking out individual tires after transporting the tires of different types of hollow tires stacked inside.

  When transporting multiple tires (or temporarily storing old tires), especially when transporting used old tires, for example, storing small tires inside large tires to reduce the mounting space during transport Is done. Specifically, for example, two compression arms driven by a hydraulic mechanism are brought into contact with a tread of a small tire, and the compression arm is compressed from two opposite directions by narrowing the space between the compression arms. The tire deformed by the compression is pushed into the tire from the bead of the large tire, and the pressure applied by the compression arm is released to release the small tire. Then, the small size tire returns to the original circular shape inside the large size tire and is stored inside the large size tire. In this way, one or two small tires are accommodated in a large tire, thereby reducing transportation costs and storage space.

  As described above, after inserting a small tire into a large tire and transporting it to a destination (or when disposing of the small-diameter tire), an operation of taking out the small tire is performed. In this work, for example, a bar or the like is inserted from the bead of the large tire into the tire, and pressure is applied by pressing the bar or the like against the outer peripheral portion of the small tire accommodated in the tire. Extrude from. Thereafter, other portions of the small tire are sequentially pushed out in the same manner and taken out from the large tire.

  Moreover, as an apparatus which removes a tire, there exists an apparatus which removes a used tire from a wheel like a tire remover described in JP-A-2004-106831, for example. In this device, a wheel arranged on the inside is fixed to the device, a hook-shaped tire removing tool is hooked on a bead of a tire arranged on the outside, and the tire removing tool is raised to remove the bead. It is configured to be removed from the wheel rim. In such a configuration, it is difficult to firmly fix the small tire disposed inside the tire, and it is impossible to use the above-described device when taking out the small tire from the inside of the large tire. Therefore, when taking out a small tire from the inside of a large tire, it will be entrusted to manual work.

JP 2004-106831 A

  When a small tire is transported while being superimposed inside a large tire, the stored tire is removed manually, which requires considerable labor and work time, and quickly removes a large number of tires. Had the problem of becoming difficult. In addition, since force is applied to each tire manually, it is difficult to appropriately suppress the strength of the force acting on the tire, and there is a problem that the possibility of damaging the tire during extraction work increases. It was.

  The present invention has been made in order to solve the above-described problems, and efficiently removes a tire housed in a large tire and prevents a tire from being damaged by the removing operation, and a tire removing device. And it aims at providing a tire taking-out method.

  The swing mechanism according to the present invention has a tongue-like shape that is inserted between the first tire and a second tire that is smaller than the first tire stored so as to overlap the first tire. A claw portion having a take-out portion, an arm portion having the claw portion disposed at a tip thereof, and the arm portion are rotatably supported along the width direction of the first tire, and the take-out portion is extended by the rotation. A claw support mechanism that fixes the claw when the direction coincides with the width direction of the first tire, and a movement mechanism that moves the arm in the width and radial directions of the first tire. And the moving mechanism section moves the arm section in the outer diameter direction of the first tire and is supported by the claw support mechanism section with the take-out section facing the outer diameter direction of the first tire. The claw portion When the insertion portion is inserted between the bead portion of the tire and the bead portion of the second tire and the take-out portion comes into contact with the sidewall of the second tire, the moving mechanism portion moves the arm portion to the first tire. The take-out part is moved along the sidewall of the second tire, and the inside of the first tire and the second are moved along with the movement of the arm part. When the claw portion in contact with the outer side of the tire rotates and the tip of the take-out portion comes into contact with the shoulder portion of the second tire, the moving mechanism portion has the tip of the take-out portion on the inner wall of the first tire. The arm portion is moved away from the second tire in the width direction of the first tire and moved in the outer diameter direction of the first tire so as not to contact, and the take-out portion is moved to the second tie. The claw support mechanism portion fixes the claw portion so as not to rotate, and the moving mechanism portion causes the arm portion to approach the second tire in the width direction of the first tire. When the claw portion is brought into contact with a portion including the tread of the second tire, the moving mechanism portion moves the arm portion to the inner diameter of the first tire. The second tire portion is exposed from the opening of the first tire, and the arm portion is moved in the width direction of the first tire to move the second tire portion to the first tire. The second tire is taken out from the inside of the first tire while being separated from the tire.

  The tire take-out device according to the present invention includes the swing mechanism and a tire fixing portion that fixes a first tire that is housed so as to overlap a second tire smaller than the swing mechanism. The first tire is fixed to the tire so that a width direction of the first tire coincides with an extending direction of the arm portion, and the swing mechanism is fixed to the tire fixing portion. The second tire is taken out from the inside.

  The tire take-out method according to the present invention is a tire take-out method using the tire take-out device, wherein the first tire housed so as to overlap the second tire smaller than itself is superposed on the tire fixing portion. And a moving mechanism portion that moves the arm portion in the outer diameter direction of the first tire and is supported by the claw support mechanism portion with the take-out portion facing the outer diameter direction of the first tire. A second step of inserting the claw portion between the bead portion of the first tire and the bead portion of the second tire, and the movement when the take-out portion contacts the sidewall of the second tire. The mechanism portion moves the arm portion in the outer diameter direction and the width direction of the first tire, and moves the take-out portion along the sidewall of the second tire. On the move Thus, when the claw portion in contact with the inner side of the first tire and the outer side of the second tire rotates and the tip of the take-out portion comes into contact with the shoulder portion of the second tire, the tip of the take-out portion becomes The moving mechanism part separates the arm part from the second tire in the width direction of the first tire and in the outer diameter direction of the first tire so as not to contact the inner wall of the first tire. A fourth step of moving, and when the take-out portion comes into contact with the tread of the second tire, the claw support mechanism portion fixes the claw portion so as not to rotate, and the movement mechanism portion attaches the arm portion to the tread. The fifth tire is made to approach the second tire in the width direction of the first tire and is moved in the outer diameter direction of the first tire to bring the claw portion into contact with a portion including the tread of the second tire. The moving mechanism portion moves the arm portion in the inner diameter direction of the first tire to expose a portion of the second tire from the opening portion of the first tire; and A moving mechanism moves the arm portion in the width direction of the first tire, moves a portion of the second tire in contact with the claw portion away from the first tire, and moves from the inside of the first tire. And a seventh step of taking out the second tire.

  According to the present invention, it is possible to reduce labor due to manual work and suppress tire damage due to take-out work.

It is a perspective view which shows the external appearance of the tire taking-out apparatus by this Example. It is explanatory drawing which shows schematic structure of a nail | claw part and a nail | claw support mechanism part. It is explanatory drawing which shows operation | movement of a tire taking-out apparatus. It is explanatory drawing which shows operation | movement of a tire taking-out apparatus.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an appearance of a tire take-out device according to this embodiment. The tire take-out device shown in FIG. 1 includes a tire fixing portion 1 for fixing a large-diameter tire, a swing mechanism portion 2 for taking out a small-diameter tire housed in the large-diameter tire, a tire fixing portion 1 and a swing mechanism portion 2. It is comprised by the base 3 to fix. The large-diameter tire referred to here has a larger tire diameter than the small-diameter tire, and has a larger tread width, tire total width, sidewall, etc., and the space inside the tire is smaller than the outer dimension of the small-diameter tire. Is also big. In other words, the large-diameter tire has a size that can be accommodated so that the small-diameter tire is superimposed on itself.

The tire fixing portion 1 includes sidewall support portions 10 and 11 that support sidewalls of a large-diameter tire, a tread support portion 12 that supports a tread of a large-diameter tire, and a bottom plate portion 13 on which the tread of the large-diameter tire is placed. .
The sidewall support portion 10 is made of, for example, a regular quadrilateral plate member, and a perfectly circular hole portion 10a in which the hole centers overlap is formed at the center position of the plate member. Further, the sidewall support portion 11 is configured in the same manner as the sidewall support portion 10. The side wall support part 10 and the side wall support part 11 are spaced apart from each other with a size approximately equal to the total width of the large diameter tire so as to sandwich the side walls on both sides of the large diameter tire, and are erected on the bottom plate part 13 in parallel with each other. Has been. The sidewall support portion 11 is disposed at an outer end portion in the tire take-out device, and the sidewall support portion 10 is disposed on the inner side, that is, at a position facing the swing mechanism portion 2.

The hole portion 10a has a hole diameter larger than the rim diameter of the large-diameter tire. Specifically, when the bead portion of the large-diameter tire is bent toward the outer side of the tire, the hole portion 10a is not in contact with the sidewall support portion 10. In addition, the size and shape of the claw 20 of the swing mechanism 2 described later has a hole diameter that does not contact the sidewall support 10 and can be inserted into a small-diameter tire housed in a large-diameter tire. Have.
The hole portion 10 a is not limited to the perfect circle shape, and may be any shape as long as the entire bead portion of the large-diameter tire placed on the bottom plate portion 13 can face from the outside of the sidewall support portion 10. The hole portion 11a is formed in the same manner as the hole portion 10a described above, and has a shape and a size that do not hinder the operation of the claw portion 20 and the arm portion 21 of the swing mechanism portion 2 described later. .

  The tread support portion 12 is composed of, for example, two plate-like members that are divided into upper and lower portions, and connects the aforementioned side wall support portion 10 and the side wall support portion 11 to each side end of the side wall support portions 10 and 11. It is arranged in the part. Further, the tread support portion 12 is inserted into the sidewall support portion 10 and the sidewall support portion 11 so that the large-diameter tire to be fixed to the tire fixing portion 1 can be pulled out from the sidewall support portion 10. 10 and 11 are provided only at one end.

  The swing mechanism portion 2 includes a claw portion 20 that is inserted into the inside of a bead portion of a large-diameter tire that is fixed to the tire fixing portion 10, an arm portion 21 that supports the claw portion 20, and a moving mechanism that moves the position of the arm portion 21. A portion 22 is provided. The swing mechanism portion 2 is disposed so as to face the plate surface of the sidewall support portion 11 constituting the tire fixing portion 1 and to allow the claw portion 20 to be inserted into the hole portion 11a in the movement range of the arm portion 21. It is fixed to the pedestal 3.

The claw portion 20 is made of, for example, a steel material and has a shape in which two tongue-shaped pieces are arranged in an L shape. For example, one piece of the L shape has a flat shape tapered toward the tip, and the other piece of the L shape is rotatably attached to and supported by the arm portion 21, and the claw portion 20 is attached to the arm portion as will be described later. 21 has a portion fixed at a predetermined angle with respect to 21.
The arm portion 21 has a rigidity that does not cause bending or distortion, and is formed like a linear member, for example, a beam member. The arm portion 21 is generally a central portion of a portion extended toward the tire fixing portion 1 by the moving mechanism portion 22. Is supported. A claw support mechanism unit 210 that rotatably supports the claw unit 20 and fixes the claw unit 20 at a predetermined angle or rotation position is provided at the distal end of the arm unit 21.

  The moving mechanism unit 22 is supported by a plurality of support columns 22a erected on the pedestal 3, and moves the arm unit 21 in the front-rear direction (in the left-right direction in the figure) toward the tire fixing unit 1 and in the up-down direction. The drive mechanism part 22b to be provided is provided. The drive mechanism portion 22b illustrated in FIG. 1 is configured so as to rise or descend along the support portion 22a together with the arm portion 21, and to support and fix the arm portion 21 at an arbitrary height. The drive mechanism unit 22b includes, for example, a drive source motor and a control unit that controls the drive operation of the motor. The drive mechanism 22b is operated by manually applying a force to a predetermined part such as a handle without providing these motors and a control unit, and the claws are attached to the large-diameter tire supported and fixed to the tire fixing unit 1. You may comprise the moving mechanism part 22 so that the part 20 can be moved to a desired position.

FIG. 2 is an explanatory diagram showing a schematic configuration of the claw portion and the claw support mechanism portion. This figure shows a schematic configuration of a claw support mechanism unit 210 that supports and fixes the claw unit 20 to the arm unit 21 and a state of each unit when operated.
As described above, the L-shaped piece of the claw portion 20 is formed with a tapered side, and a take-out portion 20a formed into a flat shape that can be easily inserted between a large-diameter tire and a small-diameter tire. It is composed.
Further, a claw support portion 20b that is rotatably attached to the claw support mechanism portion 210 via, for example, a support shaft 23 is provided on the other end of the claw portion 20, that is, the base end side of the take-out portion 20a. The claw support portion 20b is provided with a cam portion 20c that forms a cam-like smooth curved surface on the L-shaped back side and protrudes from the central portion. At one end of the cam portion 20c, a latch portion 20e that comes into contact with a stopper plate described later is formed. A swing stopper 20d is provided at the end of the claw support portion 20b to limit the movable range when the claw portion 20 rotates counterclockwise in the figure. The swing stopper 20d extends in the opposite direction on a straight line from the take-out portion 20a, and protrudes from the rear portion of the claw portion 20 beyond the protruding portion of the cam portion 20c.

The claw support mechanism part 210 supports the claw part 20 by a stay part 213 provided at the tip of the claw support mechanism part 210. The stay part 213 supports the claw part 20 using the support shaft 23 so that the tip of the take-out part 20a moves toward a large-diameter tire supported by the tire fixing part 1 while drawing a rotation trajectory. That is, when the tire fixing portion 1 grounds the tread of the large diameter tire to the bottom plate portion 13 to support and fix the large diameter tire, the claw support mechanism portion 210 is configured to vertically rotate the claw portion 20. In other words, the claw support mechanism portion 210 draws an arc along the width direction of the large-diameter tire, that is, along the extending direction of the arm portion 21 when the claw portion 20 rotates. The claw part 20 is supported.
The upper end portion of the claw support mechanism 210 is provided with a stopper plate 211 that limits the movable range when the claw 20 rotates to the right in the drawing.

The stopper plate 211 is provided at the upper end of the claw support mechanism 210 so as to protrude from the tip of the claw support mechanism 210 toward the back of the claw 20. Further, the stopper plate 211 is configured such that the base end portion is supported and fixed to the main body of the claw support mechanism portion 210, for example, and the protruding tip end side can be opened upward in the drawing.
When the front end of the stopper plate 211 is moved upward, the claw support mechanism 210 has a spring 212 that closes the open front end of the stopper plate 211, for example, a side of the main body of the claw support mechanism 210, that is, an arm. It is provided on the side of the portion 21.

FIG. 2A shows a state in which the claw portion 20 is disposed in the original position. The claw portion 20 is rotated as much as possible in the clockwise direction in FIG. The state which contact | abutted is shown.
In the illustrated state, the latch portion 20e of the claw portion 20 and the swing stopper 20c are located at the lowest point, and the tip of the take-out portion 20a of the claw portion 20 faces upward. Here, the stopper plate 211 is disposed and configured at a position where the tip end abuts against the cam portion 20 c of the claw portion 20. In the state shown in FIG. 2A, the tip of the stopper plate 211 is not pushed up by the cam portion 20c but is closed.

FIG. 2B shows a state in which the claw portion 20 is rotated in the left direction in the drawing from the original position shown in FIG. When the claw portion 20 rotates from the above-mentioned original position, the convex portion of the cam curved surface of the cam portion 20c comes into contact with the tip portion of the stopper plate 211, and the tip portion is pushed up to extend the spring 212.
The cam portion 20c has a cam curved surface at a portion in a range where the claw portion 20 contacts the stopper plate 211 when the claw portion 20 rotates 90 degrees from the original position. This cam curved surface is formed of a smooth curved surface, and has a shape that protrudes most at an intermediate position when the claw portion 20 rotates 90 degrees from the original position, for example, the above-mentioned original position and a position rotated 90 degrees, that is, the cam Both end portions of the curved surface are formed as flat surfaces.

2C, the claw portion 20 is further rotated to the left as much as possible from the state of FIG. 2B, the claw support mechanism portion 210 is locked, and the claw portion 20 is fixed to the arm portion 21. The state of each part when it is done is shown.
The claw portion 20 rotates in the left direction in the figure, the tip of the take-out portion 20a moves along a rotation locus, and the extending direction of the take-out portion 20a is the width direction of the large-diameter tire fixed to the tire fixing portion 1. When they coincide with each other, the tip of the stopper plate 211 comes into contact with one end of the cam portion 20c.
Here, the latch portion 20e is provided at one end of the cam portion 20c as described above. The latch portion 20e forms a wall surface perpendicular to the cam curved end portion of the cam portion 20c. In other words, the wall surface of the latch portion 20 e extends vertically downward at the original position of the claw portion 20.

When the claw portion 20 rotates to a position where the wall surface of the latch portion 20e and the bottom end face of the tip end portion of the stopper plate 211 are in contact with each other, the end portion of the cam curved surface of the cam portion 20c is formed flat. The front end is not pushed up, and the stopper plate 211 is closed by the bias of the spring 212.
At this time, the corners (convex corners) of the tip of the stopper plate 211 are fitted to the corners (concave corners) that serve as the boundary between the latch part 20e and the cam part 20c, and these corners are The stopper plate 211 is latched by the latch part 20e in contact with each other. In this state, when the claw portion 20 tries to rotate rightward in the figure, the convex portion (cam curved surface) of the cam portion 20c comes into contact with the tip end portion of the stopper plate 211 from above, and the claw portion 20 rotates to the right. Is blocked. In other words, for example, rotation that occurs when the tip of the take-out portion 20a is pushed upward by an external force such as the elasticity of the tire is prevented.

Further, when the claw portion 20 rotates to the left in the drawing and the leading end portion of the stopper plate 211 and the latch portion 20e come into contact with each other as described above, the swing stopper 20d of the claw portion 20 is moved to the claw support mechanism portion 210. For example, the main body abuts on a locking portion 214 formed at the tip portion. In this way, the swing stopper 20d abuts against the main body of the claw support mechanism portion 210, whereby the claw portion 20 is rotated counterclockwise, in other words, the leading end of the take-out portion 20a is pushed downward by the external force such as the elastic force described above. Rotation that occurs in the event is prevented.
As described above, the stopper plate 211 is latched, and the swing stopper 20d abuts on the claw support mechanism portion 210, so that the extending direction of the take-out portion 20a and the arm portion 21 as shown in FIG. The nail | claw part 20 is fixed in the state in which an extending direction corresponds. In this way, the claw portion 20 is fixed so as not to rotate even when an external force is applied from either the upper side or the lower side of the take-out portion 20a, and the take-out portion 20a is the same as the arm portion 21 toward the tire fixing portion 1. It moves by drawing a trajectory.

In the above description, the claw 20 is rotated from the original position shown in FIG. 2 (a) to the left in the figure and fixed to the arm 21 shown in FIG. 2 (c). As to the state and operation, when returning from the state of FIG. 2C to the state of FIG. 2A, that is, when the claw portion 20 is rotated clockwise in the figure, for example, as follows: Operate each part.
The driving motor provided in the claw support mechanism 210 is driven to open the front end of the stopper plate 211 latched by the latch 20e upward, and the claw 20 is rotated rightward to latch the latch 20e. The tip of the stopper plate 211 is released. In this way, the tip end portion of the stopper plate 211 is moved to the intermediate side of the cam curved surface (cam profile) of the cam portion 20c, and the claw portion 20 is rotated to the right to move to the original position.

The claw support mechanism unit 210 includes, for example, a motor of a power source (not shown) and a claw control unit that controls the driving operation of the motor, and has been described with reference to FIG. 2 under the control of the claw control unit. Alternatively, the claw portion 20 may be configured to rotate in a desired direction.
Furthermore, a drive motor that opens the stopper plate 211 when releasing the locked state of the claw portion 20 described above may be provided, and the operation of this drive motor may be controlled by the claw portion control portion. The claw control unit may be included in the control unit that controls the operation of the moving mechanism unit 22 described above. That is, the operation control of the claw support mechanism unit 210 may be performed by the control unit that controls the operation of the moving mechanism unit 22. In this case, a sensor for detecting the open / close state of the stopper plate 211, a sensor for detecting the rotation angle of the claw portion 20 and the like are provided, and the control unit operates each mechanism using signals output from these sensors. Configured to control.

  In the tire take-out device described here, the claw portion 20 moves while contacting the respective wall surfaces of the large-diameter tire 310 and the small-diameter tire 320 in accordance with the movement operation of the arm portion 21 performed by the movement mechanism portion 22. 20 is configured to rotate, and operates as described later regardless of the presence or absence of a motor that rotates the claw portion 20.

Next, the operation will be described.
3 and 4 are explanatory views showing the operation of the tire take-out device. These drawings show a part of the tire fixing unit 1 and the swing mechanism 2 of the tire take-out device. Each tire supported by the tire fixing unit 1 is shown in order to clearly show the operation of the claw portion 20 and the arm portion 21. It is displayed in a vertical section. 3 (a) to 3 (d) and FIGS. 4 (e) to 4 (h) show a series of tire take-out operations performed by the control unit controlling the moving mechanism unit 22. FIG. is there.
3 and 4 show a state where the large-diameter tire 310 containing the small-diameter tire 320 is supported and fixed to the tire fixing portion 1.

Before the control unit starts the take-out operation, as shown in FIG. 3A, the claw portion 20 is disposed at the above-described original position. In the original position, the claw portion 20 is supported and fixed in a state where the tip of the take-out portion 20a faces the outer diameter direction of the large-diameter tire 310 supported by the tire fixing portion 1.
When the control unit starts the control for taking out the small-diameter tire, the control unit first controls the moving mechanism unit 22 to move the claw unit 20 disposed at the original position. Specifically, the moving mechanism unit 22 is operated, and the arm unit 21 is moved in the direction indicated by the arrow A in FIG. 3B, for example, is moved toward the radial center portion of the large-diameter tire 310.
In detail, the arm portion 21 is moved along the width direction and the radial direction of the large-diameter tire 310 fixed to the tire fixing portion 1, and the tip of the take-out portion 20a facing the outer-diameter direction of the large-diameter tire 310 is moved. In the opening portion of the large-diameter tire 310, for example, it is disposed between the bead portion of the large-diameter tire 310 and the bead portion of the small-diameter tire 320 that are located on the near side as viewed from the swing mechanism portion 2.

Next, the control unit controls the moving mechanism unit 22 to vertically move the claw unit 20 and the arm unit 21 upward as indicated by the arrow B in FIG. 3C, that is, in the outer diameter direction of the large-diameter tire 310. The tip of 20a is inserted between the bead portion of the large-diameter tire 310 and the bead portion of the small-diameter tire 320 described above. Thereafter, the arm portion 21 is moved vertically until the tip of the take-out portion 20a comes into contact with the sidewall of the small-diameter tire 320 shown in FIG. When the arm unit 21 reaches this position, the control unit controls the moving mechanism unit 22 to move the arm unit 21 obliquely upward indicated by an arrow C in FIG.
Specifically, when the take-out portion 20a inserted between the bead portion of the large-diameter tire 310 and the bead portion of the small-diameter tire 320 reaches a position in contact with or near the sidewall of the small-diameter tire 320, the arm portion 21 is retracted. While raising.

In other words, the arm portion 21 is moved in the width direction of the large-diameter tire 310 and is moved in the outer diameter direction of the large-diameter tire 310 to move the take-out portion 20a along the sidewall of the small-diameter tire 320 while the claw portion is moved. 20 is inserted into the large-diameter tire 310. At this time, preferably, the claw portion 20 is moved so that the side wall of the small-diameter tire 320 is not deformed by coming into contact with the claw portion 20 (extraction portion 20a).
When the take-out portion 20a is inserted as described above, the back side of the claw portion 20 contacts the bead portion and the inside of the sidewall of the large-diameter tire 310, and the opening portion of the large-diameter tire 310 is in the large-diameter tire 310. Expands in the width direction. When the arm portion 21 moves in the direction indicated by the arrow C, that is, when the arm portion 21 moves in the outer diameter direction of the large-diameter tire 310 and is slightly separated from the small-diameter tire 320 in the width direction of the large-diameter tire 310, the bead of the large-diameter tire 310 The claw part 20 sandwiched between the inner part and the outer side wall of the small-diameter tire 320 starts to rotate. In addition, when rotating the nail | claw part 20 using the motor etc. with which the nail | claw support mechanism part 210 was equipped, the control part controls the nail | claw support mechanism part 210 from this time, for example, and the nail | claw part 20 is made at an appropriate speed. Rotate counterclockwise in the figure.

The claw portion 20 moves in the outer diameter direction of the large-diameter tire 310 while rotating, and the leading end of the take-out portion 21a exceeds the shoulder portion of the small-diameter tire 320 or is in contact with the shoulder portion as shown in FIG. If the control part and the movement mechanism part 22 are moved to, the inner wall of the large-diameter tire 310 is not damaged by contact of the tip of the take-out part 20a, and the rotation of the claw part 20 is not stopped by this contact. The moving operation of the arm unit 21 is controlled.
Specifically, the arm portion 21 is moved in the direction indicated by the arrow D in FIG. 4E, and is raised while retracting the arm portion 21 so as to draw an arc of the upper chord, for example.
In other words, the arm portion 21 is moved away from the small-diameter tire 320 in the width direction of the large-diameter tire 310 and moved in the outer-diameter direction of the large-diameter tire 310 (retracted obliquely upward in the drawing). As the arm portion 21 moves, the claw portion 20 rotates with the tip of the take-out portion 20a in contact with the sidewall of the small-diameter tire 320 as a fulcrum, and the take-out portion that faces the outer diameter direction of the large-diameter tire 310 The tip of 20a changes direction in the width direction of the large-diameter tire 310.

  As described above, when the arm portion 21 and the claw portion 20 are moved away from the small-diameter tire 320 in the width direction of the large-diameter tire 310 and are moved in the outer-diameter direction, the proximal end side of the take-out portion 20 a is Touch the inside of the bead. The take-out portion 20a receives a pressure toward the small-diameter tire 320 due to the stress from the bead portion, and moves while contacting the sidewall, shoulder portion, and tread of the small-diameter tire 320. At this time, the tip of the take-out portion 20a moves so as to trace these parts.

Thereafter, the swing stopper 20d rotates in the direction indicated by arrow F in FIG. 4 (f), the takeout portion 20a rotates in the direction indicated by arrow G, and the takeout portion 20a is substantially parallel to the tread of the small-diameter tire 320. Thus, the extending direction of the take-out portion 20a coincides with the extending direction of the arm portion 21.
When the claw portion 20 is fixed so as not to rotate by the claw support mechanism portion 210 in this way, the control portion controls the moving mechanism portion 22 to draw the arc of the lower chord along the traveling direction of the arm portion 21. Thus, when the claw portion 20 is fixed, the entire extending portion (L-shaped inner portion) of the take-out portion 21a is brought into contact with the tread of the small-diameter tire 320.
In other words, the arm portion 21 is moved closer to the small-diameter tire 320 in the width direction of the large-diameter tire 310 and moved in the outer-diameter direction of the large-diameter tire 310 so that the take-out portion 20a is brought into contact with the tread of the small-diameter tire 320.

  When the extending direction of the take-out portion 20a coincides with the extending direction of the arm portion 21, the claw portion 20 is fixed so as not to rotate by the stopper plate 211, the swing stopper 20d, etc. of the claw support mechanism portion 210 as described above. Is done. When the claw support mechanism portion 210 is in a fixed state, the L-shaped claw portion 20 is brought into contact with the tread of the small-diameter tire 320 with the take-out portion 20a, and further to the shoulder portion of the small-diameter tire 320 and the like. The end side and the claw support portion 20b come into contact with each other.

  Next, the control unit controls the moving mechanism unit 22 to move the arm unit 21 in the direction indicated by the arrow H in FIG. 4G, that is, the inner diameter direction of the large-diameter tire 310, and the small-diameter through the claw unit 20. A pressure is applied to the tire 320, and a part of the small diameter tire 320 in contact with the claw portion 20 is taken out from the opening of the large diameter tire 310. Specifically, the tread of the small-diameter tire 320 with which the claw portion 20 abuts lowers the arm portion 21 to a position where the tread of the small-diameter tire 320 is exposed from the bead portion of the large-diameter tire 310, and the portion including the tread of the small-diameter tire 320 has a large diameter. Extrude from inside the tire 310.

Thereafter, the control unit moves the arm unit 21 in the direction indicated by the arrow K in FIG. 4 (h), and a part of the small-diameter tire 320 that is in contact with the claw unit 20, that is, a portion exposed from the large-diameter tire 310. It pushes out from the hole 10a of the sidewall support part 10 to the outside of the tire fixing part 1.
In this way, the exposed portion of the small-diameter tire 320 is moved in the width direction of the large-diameter tire 310 so as to be separated from the large-diameter tire 310 and other small-diameter tires 320 remaining inside the large-diameter tire 310. Pull out the part. At this time, the control unit operates the moving mechanism unit 22 until the entire small-diameter tire 320 is exposed from the large-diameter tire 310.

  As described above, according to this embodiment, the moving mechanism portion 22 moves the arm portion 21, and the claw portion 20 provided at the tip of the arm portion 21 is replaced with the bead portion of the large-diameter tire 310 and the bead of the small-diameter tire 320. The claw part 20 inserted is rotated between the two parts and brought into contact with the tread of the small-diameter tire 320. After the arm part 21 is lowered, the part of the small-diameter tire 320 with which the claw part 20 is in contact is moved. Since the small-diameter tire 320 is taken out of the large-diameter tire 310 by moving in the tread direction of the large-diameter tire 310, manual labor can be suppressed, and the time required for the taking-out operation can be greatly saved. .

  In addition, when the claw portion 20 is inserted between the large-diameter tire 310 and the small-diameter tire 320, the claw portion 20 is inserted along the sidewall of the small-diameter tire 320. That can be suppressed.

  Further, when the claw portion 20 inserted between the large-diameter tire 310 and the small-diameter tire 320 is rotated, the moving operation of the arm portion 21 is controlled to move the claw portion 20 from the small-diameter tire 320 in the width direction of the large-diameter tire 310. Since the claw portion 20 is rotated and moved, the inside of the large-diameter tire 310 and the shoulder portion of the small-diameter tire 320 are moved by the tip of the take-out portion 20a. It can suppress damage.

  The tire take-out device described in this embodiment is configured such that the large-diameter tire 310 is fixed in a standing state, that is, in a state where the tread is grounded, and the small-diameter tire 320 is taken out from the inside. The apparatus or the like is fixed, for example, in a state where the large-diameter tire 310 is laid down, that is, in a state where the sidewall is grounded, and the arm portion 21 is approached from above the large-diameter tire 310 to It is also possible to adopt a configuration in which the claw portion 20 is inserted between the bead portion of the small diameter tire 320 and the small diameter tire 320 is taken out by moving the arm portion 21 in the same manner as described in this embodiment.

1 tire fixing part 2 swing mechanism part 3 base 10, 11 sidewall support part 10a, 11a hole part 12 tread support part 13 bottom plate part 20 claw part 20a take-out part 20b claw support part 20c cam part 20d swing stopper 20e latch part 21 arm Part 22 movement mechanism part 22a support part 22b drive mechanism part 23 support shaft 210 claw support mechanism part 211 stopper plate 212 spring 213 stay part 214 locking part

Claims (3)

A second tire smaller than the first tire stored so as to be superimposed inside the first tire, and a claw portion having a tongue-shaped take-out portion inserted between the first tire,
An arm part for disposing the claw part at the tip;
The arm portion is supported so as to be rotatable along the width direction of the first tire, and when the extending direction of the take-out portion coincides with the width direction of the first tire by the rotation, the claw portion is A claw support mechanism to be fixed;
A moving mechanism for moving the arm in the width direction and radial direction of the first tire;
With
The claw supported by the moving mechanism portion moving the arm portion in the outer diameter direction of the first tire and by the claw support mechanism portion facing the take-out portion in the outer diameter direction of the first tire. A portion is inserted between the bead portion of the first tire and the bead portion of the second tire,
When the take-out part comes into contact with the sidewall of the second tire, the moving mechanism part moves the arm part in the outer diameter direction and the width direction of the first tire to move the take-out part to the second tire. Move along the side wall,
With the movement of the arm portion, the claw portion that contacts the inside of the first tire and the outside of the second tire rotates, and the leading end of the take-out portion contacts the shoulder portion of the second tire, The moving mechanism portion separates the arm portion from the second tire in the width direction of the first tire so that the leading end of the take-out portion does not contact the inner wall of the first tire and the first tire Moved in the outer diameter direction of the tire
When the take-out portion comes into contact with the tread of the second tire, the claw support mechanism portion fixes the claw portion so as not to rotate, and the moving mechanism portion moves the arm portion in the width direction of the first tire. And approaching the second tire and moving in the outer diameter direction of the first tire,
When the claw portion comes into contact with a portion including the tread of the second tire, the moving mechanism portion moves the arm portion in the inner diameter direction of the first tire to move the portion of the second tire to the first tire. The first tire is exposed from the opening of the first tire, the arm portion is moved in the width direction of the first tire, and the portion of the second tire is separated from the first tire, and the inside of the first tire is Take out the second tire,
A swing mechanism characterized by that. A swing mechanism according to claim 1;
A tire fixing portion for fixing a first tire stored so as to overlap a second tire smaller than itself inside;
With
The tire fixing portion fixes the first tire so that a width direction of the first tire matches an extending direction of the arm portion,
The swing mechanism takes out the second tire from the inside of the first tire fixed to the tire fixing portion;
A tire take-out device. A tire removing method using the tire removing device according to claim 2,
A first step of fixing a first tire accommodated in a tire fixing portion so as to overlap a second tire smaller than itself inside;
The moving mechanism moves the arm part in the outer diameter direction of the first tire, and the claw part supported by the claw support mechanism part with the take-out part facing the outer diameter direction of the first tire is A second step of inserting between the bead portion of the tire and the bead portion of the second tire;
When the take-out part comes into contact with the sidewall of the second tire, the moving mechanism part moves the arm part in the outer diameter direction and the width direction of the first tire to move the take-out part to the second tire. A third step of moving along the sidewalls of
With the movement of the arm portion, the claw portion that contacts the inside of the first tire and the outside of the second tire rotates, and the leading end of the take-out portion contacts the shoulder portion of the second tire, The moving mechanism portion separates the arm portion from the second tire in the width direction of the first tire so that the leading end of the take-out portion does not contact the inner wall of the first tire. A fourth step of moving the tire in the outer diameter direction;
When the take-out portion comes into contact with the tread of the second tire, the claw support mechanism portion fixes the claw portion so as not to rotate, and the moving mechanism portion fixes the arm portion in the width direction of the first tire. A fifth step of bringing the claw portion into contact with a portion including the tread of the second tire, with the second tire approaching the second tire and moving in the outer diameter direction of the first tire;
A sixth step in which the moving mechanism moves the arm in the inner diameter direction of the first tire to expose a portion of the second tire from the opening of the first tire;
The moving mechanism section moves the arm section in the width direction of the first tire and separates a portion of the second tire that comes into contact with the claw section away from the first tire. A seventh step of removing the second tire from
A method for taking out a tire, comprising:

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