JP2011116334A - Method and device for extracting wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for extracting a wheel capable of extracting the wheel from a tire in a short time. <P>SOLUTION: This device includes a receiving base 12 formed with an opening part 16 through which the wheel W can be passed and arranged with the tire T with the wheel W, a tire separating/fixing device 21 separating an outer bead part from an outer rim of the wheel W by pressing a rear part of an outer sidewall of the tire T by a blade 22 and further fixing the tire T to the receiving base 12 by pressing the sidewall to an internal surface of an inner sidewall, and a wheel extruding device 51 pushing a rear part of a disk part D of the wheel W downward by projecting an extrusion body 52 at a prescribed extrusion angle approaching an axial center O of the tire T from an outer peripheral side and separating the wheel W from the inside of the tire T, while rotating the wheel W with a fulcrum rod 54 arranged on a bottom surface in a front part of the opening part 16 as a center. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wheel extraction method and apparatus for extracting a wheel from a tire at a recycling site such as car dismantling.

  For example, the tire bead drop (removal) device disclosed in Patent Documents 1 and 2 is used at the site of tire puncture repair or replacement with a new tire. The tire is attached to a swivel and the arm is swung. Then, the side wall of the tire is pressed by the blade provided at the tip, and the bead portion is dropped from the rim of the wheel. Then, the swivel base is rotated to drop the bead portion from the wheel rim over the entire circumference. Next, the tire is turned over and the other bead portion is dropped as well, and the tire is detached from the wheel.

Japanese Patent No. 3188333 (FIG. 1) Japanese Patent Laid-Open No. 10-315821 (FIG. 1)

  However, in Patent Documents 1 and 2, a work time of about 2 to 3 minutes or more is required for processing one tire, and there is no problem at a tire repair or replacement site. In the recycling field where extraction is performed, a device for extracting the wheel efficiently in a shorter time has been demanded.

  An object of the present invention is to solve the above-described problems and to provide a wheel extraction method and apparatus that can efficiently extract a wheel from a tire in a short time.

The wheel extraction method according to claim 1,
Place the wheeled tire on the cradle having an opening through which the wheel can pass so that the wheel is positioned corresponding to the opening and the disk part is on the front.
By pressing one end of the outer sidewall of the tire with the blade, the outer bead portion is detached from the outer rim of the wheel,
By fixing the tire to the cradle by pressing the outer sidewall further against the inner surface of the inner sidewall with a blade,
Next, one end portion of the disc portion of the wheel is pushed out to the inner surface side by the extrudate, and the wheel is rotated around the fulcrum member arranged on the inner surface side at the other end side to be extracted from the tire.

The wheel extraction method according to claim 2 is the configuration according to claim 1,
Between the position where the blade is in contact with the outer sidewall and the position where the outer sidewall is pressed against the inner surface of the inner sidewall, the tip of the blade is placed on the outer peripheral side by a pulling distance of 10 mm or more and 50 mm or less. The inner bead portion is pulled out from the opening by being displaced, and the outer bead portion is pressed against the inner surface of the inner sidewall.

The wheel extraction method according to claim 3 is the configuration of claim 1 or 2,
The extruded body is extruded from the outer peripheral side in a direction approaching the tire axis at an extrusion angle of 5 ° to 30 ° with respect to the tire axis.

The wheel extraction method according to claim 4 is the configuration according to any one of claims 1 to 3,
When pressing one end of the outer sidewall by the blade, the pressure receiving member protruding from the opening supports the one end of the wheel from below,
Before the wheel is pushed out by the extruded body, the pressure receiving member is retracted from the opening.

The wheel extraction device according to claim 5,
A cradle in which an opening through which a wheel can pass is formed and a tire with a wheel is disposed;
The blade is driven by the blade drive device, pressing one end of the outer sidewall of the tire on the cradle to disengage the outer bead from the outer rim of the wheel, and further pressing the outer sidewall against the inner surface of the inner sidewall A tire separating and fixing device for fixing the tire to the cradle;
When the extruded body is protruded from the outer peripheral side at a predetermined extrusion angle approaching the tire axis by the extrusion driving device, one end of the disk part of the wheel is pushed into the inner surface side, and the other end when the one end of the wheel is pushed out. A wheel push-out device that rotates the wheel and extracts it from the tire with the fulcrum member arranged on the inner surface side at the end side as a rotation fulcrum is provided.

The wheel extraction device according to claim 6 is the configuration according to claim 5,
The tire separating and fixing device has a blade tip of 10 mm or more on the outer peripheral side of the tire from the position where the blade contacts the outer sidewall of the tire until the outer sidewall is pressed against the inner surface of the inner sidewall. It is configured to be displaced to the outer peripheral side by the following drawing distance.

The wheel extraction device according to claim 7 is the configuration according to claim 6,
The tire separating and fixing device includes a pressing lever having a blade attached to a free end and a fixed end supported by a support shaft so as to be swingable in a vertical direction, and a blade driving device that swings the pressing lever. ,
The support shaft is arranged above the center line of the tire with wheels arranged on the cradle, so that the tip of the blade is retracted by the pull-out distance.

The wheel extraction device according to claim 8 is the configuration according to any one of claims 5 to 7,
The extrusion angle of the extruded body is 10 ° or more and 30 ° or less with respect to the tire axis.

The wheel extraction device according to claim 9 is the structure according to any one of claims 5 to 8,
Tire separation and fixing device
A pressure receiving member that is provided on one end side of the opening of the cradle so as to be freely retractable and can support the wheel from below;
A pressure receiving member withdrawing device for retracting the pressure receiving member from the opening before the wheel is pushed out by the push plate after the outer bead portion is separated from the outer rim of the wheel by the blade. .

The wheel extraction device according to claim 10 is the configuration according to claim 9,
The pressure receiving member retracting device is constituted by a lever interlocking mechanism that moves the pressure receiving member backward in conjunction with the blade driving device,
The lever interlocking mechanism includes a cam follower attached to the output shaft of the blade drive device via an interlocking member, a cam member attached to the pressure receiving member and abutted against the cam follower, and the cam member to the cam follower. And a restraining urging member to be contacted.

  According to the first aspect of the present invention, the outer side wall is pressed by the blade to separate the outer bead portion from the outer rim of the wheel, and the outer side wall is pressed against the inner surface of the inner side wall by the blade to receive the tire. Then, by pushing out the disk portion of the wheel by the extruded body and rotating it around the fulcrum member, the wheel can be smoothly extracted while being rotated in the tire. Thereby, a wheel can be efficiently extracted from a large amount of tires with wheels at a recycling site in a short time.

  According to invention of Claim 2, when fixing a tire with a braid | blade, by displacing to the outer peripheral side only the extraction distance of 10 mm or more and 50 mm or less, one end part of the tire was pulled out to the outer peripheral side, and the inner bead part was While pulling out from the opening to the outer peripheral side, the outer bead portion can be pressed against the inner surface of the inner sidewall. This can prevent the outer rim of the wheel from coming into strong contact with the outer bead portion and inner bead portion of the tire when the wheel is pulled out by the extruded body, and can prevent deformation and breakage of the wheel. it can. In particular, chipping and breakage of an aluminum wheel manufactured by aluminum die casting can be effectively prevented.

  According to the third aspect of the present invention, the extrusion body is projected at an extrusion angle of 5 ° or more and 30 ° or less, and one end portion of the disk portion of the wheel is pushed out to the inner surface side. With the component force along the surface, the wheel can be rotated around the fulcrum member while pushing the wheel to the other end side against the elasticity of the tire. As a result, it is possible to avoid the outer rim from coming into strong contact with the inner and outer bead portions at one end of the wheel, and to prevent deformation and breakage of the wheel.

  According to the fourth aspect of the invention, when the outer sidewall is pressed by the blade, the outer bead portion can be reliably detached from the outer rim by supporting the wheel from below by the pressure receiving member. In addition, before the wheel is pushed out by the extruded body, the pressure receiving member is retracted from the opening, whereby contact between the pressure receiving member and the wheel can be eliminated.

  Here, when the wheel is pushed into the inner surface by the blade without the pressure receiving member, the wheel is inclined and the inner bead portion is detached from the inner rim, but the outer bead portion may not be detached from the outer rim. When the wheel is pressed by the extruded body in such a state, the wheel is strongly rubbed when the outer rim is detached from the outer bead portion, and the wheel is deformed or damaged.

  According to the fifth aspect of the present invention, the outer bead portion is detached from the outer rim by pressing the one end portion of the outer sidewall of the wheeled tire disposed on the cradle with the blade. Further, the outer sidewall is pressed against the inner surface of the inner sidewall by the blade to fix the tire to the cradle. Next, by projecting the extruded body along the extrusion angle, one end of the disk portion of the wheel can be pushed out to the inner surface side, and the wheel can be rotated around the fulcrum member to smoothly extract the wheel from the tire. . Thereby, a wheel can be efficiently extracted from a large amount of tires with wheels at a recycling site in a short time.

  According to the invention of claim 6, the tip of the blade is between the position where the tip of the blade contacts the outer sidewall and the outer sidewall is pressed against the inner surface of the inner sidewall by the tire separating and fixing device. The outer bead part is pulled out from the opening part to the outer peripheral side by pulling out one end of the tire to the outer peripheral side by displacing with a pulling distance of 10 mm or more and 50 mm or less so that the part is separated to the outer peripheral side. Can be brought into contact with the inner surface of the inner sidewall. As a result, the inner and outer bead portions are pulled out from the opening to the outer peripheral side, so that the outer rim of the wheel can be prevented from coming into contact with the inner and outer bead portions when the wheel is pulled out by the extruded body, and deformation or breakage of the wheel It can be prevented in advance. In particular, chipping and breakage of an aluminum wheel manufactured by aluminum die casting can be effectively prevented.

  According to the seventh aspect of the present invention, by attaching the blade to the free end portion of the pressing lever, the drawing distance of the blade tip portion can be easily set and adjusted by the length of the pressing lever and the position of the support shaft. .

  According to the eighth aspect of the present invention, the extruded body is protruded at an extrusion angle of 5 ° or more and 30 ° or less, and one end of the disk portion of the wheel is pushed out to the inner surface side. Due to the component force along the surface of the base, the wheel can be rotated around the fulcrum member while pushing the wheel to the other end side against the elasticity of the tire. As a result, the wheel can be smoothly taken out from the tire while being rotated, and the outer rim of the wheel can be prevented from coming into strong contact with the inner and outer bead portions, and deformation and breakage of the wheel can be prevented.

  According to the ninth aspect of the invention, the outer bead portion can be reliably detached from the outer rim of the wheel by supporting the one end portion of the wheel from below by the pressure receiving member and pressing the outer sidewall by the blade. it can. Further, before the wheel is pushed out by the extruded body, the pressure receiving member is retracted from the opening, so that the contact between the pressure receiving member and the wheel can be eliminated.

  According to the tenth aspect of the present invention, when the lever interlocking mechanism presses the outer sidewall against the inner surface of the inner sidewall by the lever, and the pressing force of the blade driving device exceeds the set value of the compression urging member, the compression urging The member is compressed to project the slide member, and the cam follower is acted on the cam plate to retract the pressure receiving member from the opening. As a result, even with tires of different widths, the pressure receiving member can be retracted from the opening after the outer bead is separated from the outer rim by the blade, and the simple mechanical structure is highly reliable. The operation can be confirmed visually.

It is a longitudinal cross-sectional view which shows the Example of the wheel extraction apparatus which concerns on this invention. It is a front fragmentary sectional view of a wheel extraction device. It is a top view of a wheel extraction apparatus. It is AA sectional drawing shown in FIG. (A) And (b) is a longitudinal cross-sectional view explaining operation | movement of a pressure receiving member withdrawal apparatus, (a) is before retraction of a pressure receiving member, (b) shows after retraction of a pressure receiving member. (A) And (b) is a cross-sectional view explaining operation | movement of a pressure receiving member withdrawal apparatus, (a) is before retraction of a pressure receiving member, (b) shows after retraction of a pressure receiving member. (A)-(c) is a longitudinal cross-sectional view which shows the separation fixing operation | movement by a braid | blade, (a) is before pressing of a braid | blade, (b) is after detachment | leave of an outer bead part, (c) shows the fixed state of a tire. . (D)-(f) is a longitudinal cross-sectional view which shows the pushing-out operation | movement of the tire by an extrusion body, (d) is immediately after the pushing start of a wheel, (e) is a rotation state of a wheel, (f) is an extraction state of a wheel. Indicates. It is a longitudinal cross-sectional view which shows the other Example of the wheel extraction apparatus which concerns on this invention.

Hereinafter, an embodiment of a wheel extraction device according to the present invention will be described with reference to FIGS.
(Overall configuration and basic operation)
As shown in FIG. 7 and FIG. 8, this wheel extracting device extracts the wheel W from the wheel-equipped tire T disposed horizontally on the cradle 12 so that the disk portion D of the wheel W is on the upper surface. The pulling operation is performed by pressing the vicinity of the outer bead portion Bi from the upper side to the lower side (inner surface side) with the rear portion (one end portion) of the outer side wall So of the tire T by the blade 22, Remove from the outer rim Ro. Further, the outer wall So is pushed down by the blade 22 and pressed against the inner surface of the inner sidewall Si, thereby fixing the tire T to the cradle 12. Next, the pusher 52 pushes down the rear part of the disk part D of the wheel W downward, so that the wheel is centered on a fulcrum rod (fulcrum member) 54 disposed on the bottom part (inner surface side) on the front side (the other end side). It is extracted from the inside of the tire T while rotating W downward.

  As shown in FIGS. 1 to 3, the wheel extracting device includes a receiving base 12 on which a wheel tire T with a wheel W is placed on the apparatus main body 11 with the disk portion D as an upper surface and the wheel W positioned at the opening portion 16. And a support frame 13 erected on the rear portion of the cradle 12. In the cradle 12, an opening 16 that is wider than the diameter of the wheel W and through which the wheel W can pass is formed in a support plate 15 disposed on the gantry frame 14. Further, the rear portion of the outer sidewall So of the tire T is pressed downward by the blade 22 to disengage the outer bead portion Bo from the outer rim Lo of the wheel W, and then the outer sidewall So is moved to the inner surface of the inner sidewall Si. The tire separating and fixing device 21 that presses the tire T to the cradle 12 and the extruded body 52 project from the upper part of the rear outer peripheral side downward to approach the axis O of the tire T at an extrusion angle α, and the wheel A wheel push-out device 51 that pushes the rear part of the disk part D of W downward, and a fulcrum rod 54 that is disposed on the front part side of the opening 16 and serves as a pivotal fulcrum of the wheel W are provided.

(Device body)
The gantry frame 14 is provided with a hydraulic unit 17 that generates hydraulic pressure by an electric motor at the rear, and a discharge chute 18 that discharges the wheel W at the front. The opening 16 formed in the support plate 15 has a parallel part 16b whose left and right sides are parallel at the front part, and a semicircular part 16a formed rearwardly from the parallel part 16b, and is formed in an inverted U shape in plan view. The parallel portion 16 b is opened at the front end portion of the support plate 15.

(Tire separation fixing device)
The tire separating and fixing device 21 is configured as a swing lever type, and has a pressing lever 23 whose rear end fixed end is supported by a bracket of a support frame 13 via a support shaft 23a so as to be swingable up and down. A blade 22 having an arc shape in plan view and having a slightly larger diameter than the outer periphery of the wheel W is attached to the free end of the lever 23. In addition, a blade driving device 24 formed of a hydraulic cylinder, which is a linear driving device, is supported on a bracket provided at the rear end of the upper end of the column frame 13 through a horizontal pin so as to be swingable in the front-rear direction. A rod (output shaft) 24 a is connected to the end of the pressing lever 23.

  When the wheel W is extracted, the outer bead Bo is separated from the outer rim Lo of the wheel W by the blade 22, and then the outer sidewall So is pressed against the inner surface of the inner sidewall Si through an arc path. When the blade 22 is pressed and moved along the vertical path, the tire T is fixed in a state where the outer bead portion Bo overlaps the inner bead portion Bi and the inner and outer bead portions Bo and Bi protrude into the semicircular portion 16a. Will be. In such a state, if the wheel 52 is pushed from above by the extruded body 52 to be pulled out, the outer rim Lo is strongly in contact with the inner and outer bead portions Bo and Bi, and is deformed or damaged.

  Therefore, after detaching the outer bead portion Bo from the outer rim Lo, the position of the support shaft 23a and the length L of the pressing lever 23 are set so that the tip portion of the blade 22 is displaced to the outer peripheral side by a predetermined drawing distance β. It is set. That is, with this pull-out distance β, the rear part of the tire T is pulled back (outer peripheral side), the inner bead part Bi is retracted from the semicircular part 16a, and the outer bead part Bo is pressed against the inner surface of the inner sidewall Si. The tire T can be fixed, thereby preventing the outer rim Lo from being strongly contacted with the inner and outer bead portions Bi and Bo to be deformed or damaged.

  Here, the suitable range of the drawing distance β is 10 mm or more and 50 mm or less, and the optimum range is 15 mm or more and 25 mm or less. The height of the support shaft 23a is set in the range of the vicinity position above the center line CL of the tire T arranged on the support plate 15 and above the outer sidewall So. Here, if the drawing distance β is less than 10 mm, the inner bead portion Bi cannot be retracted from the semicircular portion 16a. On the other hand, if the pull-out distance β exceeds 50 mm, the tip of the blade 22 presses the central portion (thin wall portion) of the inner and outer sidewalls Si, So, and therefore the tire T cannot be firmly fixed to the cradle 12. In order to firmly fix the tire T, it is desirable to press the vicinity of the bead portions Bi and Bo of the inner and outer sidewalls Si and So with the blade 22. Further, the length L of the pressing lever 23 is formed in a range of, for example, 60 cm or more and 150 cm or less.

  Under the support plate 15, a pressure receiving member 25 is provided in a semicircular portion 16 a of the opening portion 16 through a plurality of guide rollers 26 so as to be freely retractable. The pressure receiving member 25 supports the wheel W from below when the blade 22 presses the outer sidewall So to release the outer bead portion Bo from the outer rim Lo, so that the outer bead portion Bo is reliably released. It is configured.

  Here, when the wheel W is not supported from below by the pressure receiving member 25 when the outer bead portion Bo is detached from the outer rim Lo, the rear portion of the wheel W is pushed downward by the pressing force of the blade 22, thereby Is detached from the inner bead portion Bi, but the outer bead portion Bo is not detached from the outer rim Lo, and the tire T may be fixed to the cradle 12 in a state where the wheel W is inclined. When the wheel W is forcibly pushed downward by the extruded body 52 in this state, the outer rim Lo is greatly deformed or damaged due to strong friction when the outer rim Lo is detached from the outer bead portion Bo and passes through the outer bead portion Bo. Because it ends up.

  A restraining coil spring 27 that is a restraining biasing means for biasing the pressure receiving member 25 in the protruding direction is provided at the rear portion of the pressure receiving member 25. The restraining coil spring 27 is provided with an adjusting tool 28 for adjusting the protruding driving force of the pressure receiving member 25 by an adjusting nut fitted to the screw shaft. In a state where the pressure receiving member 25 is protruded from the opening portion 16, there is a possibility that the wheel W may be deformed or broken by contacting the pressure receiving member 25 when the wheel W is pulled out. A lever interlocking mechanism 29 for retracting the pressure receiving member 25 from the opening 16 is provided. Here, the constraining coil spring 27, the adjustment tool 28, and the lever interlocking mechanism 29 constitute a pressure receiving member retracting device 31.

  As shown in FIGS. 5 and 6, the pressure receiving member 25 can be retracted from the opening 16 after the outer bead portion Bo is detached from the outer rim Lo. However, in the tires T having various thicknesses, The position where the outer bead portion Bo is detached from the outer rim Lo is greatly different. For this reason, here, after the outer side wall So is pressed against the inner surface of the inner side wall Si by the blade 22, the lever interlocking mechanism 29 is operated to retract the pressure receiving member 25 from the opening 16.

  That is, in the lever interlocking mechanism 29, a slide member (interlocking member) 32 is connected to a piston rod (output shaft) 24a of a blade driving device 24 via a horizontal pin 24b, and an interlocking rod ( The interlocking member) 33 is connected. A slide hole 34 is formed in the slide member 32 in the direction in which the piston rod 24a is retracted. On the other hand, a pair of guide plates (interlocking members) 35 extending upward from the left and right side surfaces with the slide member 32 interposed therebetween are attached to the pressing lever 23, and are slidable into the slide holes 34 at the upper ends of these guide plates 35. A slide shaft (interlocking member) 36 to be fitted is attached. The interlocking rod 33 passes through the upper plate of the pressing lever 23 and is slidably inserted into a guide shoe 37 attached to the lower plate, and a cam follower 38 is provided at the lower end thereof. A compression coil spring (compression urging member) 39 that urges the piston rod 24 a and the pressing lever 23 in the direction of separating the piston rod 24 a and the guide shoe 37 is externally fitted to the interlocking rod 33. . In addition, a cam plate (cam member) 40 that is inclined from the lower front portion to the rear upper portion is attached to the pressure receiving member 25, and a cam follower 38 is inserted through the through hole 15 a formed in the support plate 15 to contact the cam plate 40. Is done. Here, the length of the slide hole 34 (slide stroke) is formed so that the pressure receiving member 25 can be retracted from the opening 16 via the cam plate 40 by the cam follower 38.

  Therefore, after the blade 22 presses the outer side wall So and comes into contact with the inner surface of the inner side wall Si, the blade driving device 24 is further extended to compress the compression coil spring 39, and the slide shaft 36 is moved to the slide hole 34. And the slide member 32 is pushed down, the cam follower 38 is pressed against the cam plate 40 via the interlocking rod 33, and the pressure receiving member 25 is retracted from the opening 16. When the compression coil spring 39 is sufficiently compressed, a sufficient pressing force by the blade 22 acts on the tire T, and the tire T is firmly fixed to the cradle 12. Thereby, even if the tire T has a different width, after the outer bead portion Bo is detached from the outer rim Lo and before the extruded body 52 pushes out the wheel W, the pressure receiving member 25 is surely secured from the opening portion 16. Can be retreated.

(Wheel extrusion equipment)
The wheel extruding device 51 is configured in a linear drive type, and the extruding body 52 having a spherical tip is ejected at an extrusion angle α [figure (d)] approaching the axis O of the tire T from above the rear outer peripheral side. The push-out driving device 53 that retreats and a fulcrum rod 54 that serves as a rotation fulcrum of the wheel W are configured.

  The extrusion driving device 52 is composed of a trunnion-type hydraulic cylinder, and the cylinder body is supported on the upper front portion of the support frame 13 via a horizontal pin, and is configured to move out and withdraw the extrusion body 52 at a predetermined extrusion angle α. ing. In the push-out driving device 53, a pair of guide rods 56 slidably guided by the guide shoe 55 are arranged in parallel with the cylinder body and connected to the piston rod (output shaft) 53a. The load has been reduced. Here, when the extruded body 52 is protruded and the wheel W is rotated around the fulcrum rod 54 around the fulcrum rod 54, the wheel W falls down and its front end collides with the piston rod 53a. Although there is a possibility of damaging 53a, by providing the guide rod 56, it is possible to prevent the piston rod 53a from being damaged by the fall of the wheel W and to guide the fallen wheel W.

  Here, a preferable range of the extrusion angle α for exiting and exiting the extruded body 52 is 5 ° or more and 30 ° or less. Here, if the extrusion angle α is less than 5 °, the component force along the support plate 15 of the pushing force of the extruded body 52 becomes small, and the wheel W is not pushed forward, so the outer rim Lo becomes the inner bead portion Bi. If the extrusion angle α exceeds 30 °, the force for pushing the wheel W downward is reduced, and the extruded body 52 slides on the disk portion D. This is because there is a case where the wheel W cannot be rotated and extracted from the tire T.

  In the opening 16 formed in the support plate 15, a plurality of sets of holding recesses 57 for spanning the fulcrum rod 54 to the left and right sides of the parallel portion 16 b are formed with a predetermined pitch in the front-rear direction. These holding recesses 57 are formed in a dogleg shape that is opened on the upper surface of the support plate 15 and bent downward in the front portion, and can effectively support the load when the wheel W is pulled out. The worker can select the holding recess 57 corresponding to the size of the tire T, and attach the fulcrum rod 54 to adjust the position of the rotation fulcrum of the wheel W.

(Procedure for extracting wheel W)
1) The position of the fulcrum rod 54 is confirmed corresponding to the outer diameter of the wheel W, and the holding recess 57 to which the fulcrum rod 54 is attached is changed as necessary.

2) As shown in FIG. 7A, the wheeled tire T is arranged on the support plate 15 of the cradle 12 so that the wheel W is along the inner side of the semicircular portion 16 a of the opening 16.
3) The blade driving device 24 is extended to lower the blade 22, and the operator further lowers the lower end portion of the blade 22 near the outer bead portion Bo (outer rim Lo) of the outer sidewall So at the outer peripheral portion of the wheel W. Thus, after adjusting the position of the tire T, the outer sidewall So is pressed from above by the blade 22, and the outer bead portion Bo is detached from the outer rim Lo of the wheel W. At this time, the pressure receiving member 25 protrudes into the semicircular portion 16a, and as shown in FIGS. 6 (a) and 7 (b), after the wheel W sinking through the tire T by the pressing of the blade 22. The end portion is supported by the pressure receiving member 25, and the outer bead portion Bo is reliably detached from the outer rim Lo.

  4) Further, as shown in FIG. 7, the blade driving device 24 is extended and the outer side wall So is pushed downward by the blade 22, and at the same time, the tip of the blade 22 is brought out along the circular arc path by the pulling distance β to the outer peripheral side. Displaced. Accordingly, the rear end portion of the tire T is pulled out to the outer peripheral side, the inner bead portion Bi is retracted from the semicircular portion 16a, and the outer bead portion Bo is pressed against the inner surface of the inner sidewall Si. The tire T is compressed at the bottom surface of the free end portion of the pressing lever 23, and the blade 22 presses the outer sidewall So against the inner surface of the inner sidewall Si to fix the tire T to the cradle 12.

  5) At this time, as shown in FIG. 5B and FIG. 6B, the compression coil spring 39 is compressed by the lever interlocking mechanism 29 to push the interlocking rod 33 downward, and the cam follower 38 passes the cam plate 40 through the cam plate 40. Thus, the pressure receiving member 25 is pulled backward and retracted from the opening 16.

  6) As shown in FIG. 8D, the push-out driving device 53 is extended to cause the push-out body 52 to protrude, and is brought into contact with the rear part of the disk part D to push the wheel W downward. As a result, as shown in FIG. 8 (e), the depressed wheel W is rotated downward about the fulcrum rod 54, and the inner and outer rims Lo and Li are extracted from the inner and outer bead portions Bo and Bi of the tire T. The wheel W is rotated in the tire T, and the wheel W is detached from the tire T and discharged to the discharge chute 18 as shown in FIG.

  At this time, since the extrusion direction of the extruded body 52 is inclined forward and downward by the extrusion angle α, the component force of the pushing force acts and the wheel W is pushed forward. Thereby, the outer rim Lo is prevented from passing through without contacting the inner bead part Bi or the semicircular part 16a, and the wheel W is prevented from being deformed or damaged.

(Effect of Example)
According to the above embodiment, the blade 22 is protruded by the blade driving device 24 of the tire separating and fixing device 21, and the vicinity of the outer periphery of the outer bead portion Bo on the outer sidewall So of the wheeled tire T disposed on the cradle 12. Is pushed downward to disengage the outer bead portion Bo from the outer rim Lo. Further, the blade 22 is extruded to press the outer sidewall So against the inner surface of the inner sidewall Si, thereby fixing the tire T on the cradle 12. Next, the extrusion drive device 53 of the wheel extrusion device 51 causes the extrusion body 52 to protrude at an extrusion angle α and pushes the rear part of the disk D of the wheel W downward, thereby rotating the wheel W around the fulcrum rod 54. Thus, the wheel W can be smoothly extracted from the tire T. Thereby, the wheel W can be efficiently extracted in a short time from the tire T with a large amount of wheels at the recycling site.

  In the tire separating and fixing device 21, the tip of the blade 22 is 10 mm or more and 30 mm or less from the contact position of the blade 22 to the inner side wall Si until the outer side wall So is pressed against the inner surface of the inner side wall Si. By displacing to the outer peripheral side within the pull-out distance β, the rear portion of the tire T is pulled out to the outer peripheral side, the inner bead portion Bi is pulled out from the opening portion 16, and the outer bead portion Bo is applied to the inner surface of the inner sidewall Si. The tire T can be fixed on the cradle 12 in contact therewith. Thereby, when the wheel W is extracted by the extruded body 52, the outer rim Lo of the wheel W can be prevented from coming into strong contact with the outer bead portion Bo and the inner bead portion Bi of the tire T, and the deformation or breakage of the wheel W can be prevented. Can be prevented in advance. In particular, chipping and breakage of an aluminum wheel manufactured by aluminum die casting can be effectively prevented.

  Further, since the blade 22 is attached to the free end portion of the pressing lever 23 to form a swing lever type, the drawing distance β of the blade 22 can be easily set by the length L of the pressing lever 23 and the position of the support shaft 23a. it can.

  Furthermore, the extrusion body 52 is projected at an extrusion angle α of 5 ° or more and 30 ° or less, and the rear portion of the disk portion D of the wheel W is pushed downward, thereby along the pedestal 12 of the pressing force by the extrusion body 52. The wheel W can be rotated about the fulcrum rod 54 while pushing the wheel W forward by the component force, and the outer rim Lo of the wheel W can be in strong contact with the inner and outer bead parts Bi and Bo. This can avoid the deformation and breakage of the wheel W.

  Further, when the rear portion of the outer sidewall So is pressed by the blade 22, the outer bead portion Bo can be reliably detached from the outer rim Lo of the wheel W by supporting the rear portion of the wheel W from below by the pressure receiving member 25. it can. Further, since the pressure receiving member 25 is retracted from the opening 16 after the outer interlocking surface So is pressed against the inner surface of the inner sidewall Si by the blade 22 by the lever interlocking mechanism 29, the contact between the wheel W and the pressure receiving member 25 is prevented. be able to.

(Other examples)
FIG. 9 is a longitudinal cross-sectional view showing another embodiment of the wheel extracting device, in which the blade driving device 61, the wheel pushing device 71, and the pressure receiving member retracting device 81 are changed as compared with the previous embodiment. is there. The same members as those in the previous embodiment are denoted by the same reference numerals and description thereof is omitted.

  The blade driving device 61 is configured to be linearly driven, and the blade 22 is attached to a piston rod 62 a of a hydraulic blade retracting cylinder 62. Further, in order to form the drawing distance β of the blade 22, the blade extending / retracting cylinder 62 is inclined from the front upper part to the rear lower part, and the blade 22 is installed to be withdrawn / retracted obliquely.

  The wheel push-out device 71 is configured as a swing lever type, and includes a push lever 73 supported so as to be swingable in the vertical direction around a support shaft 72, and a hydraulic push cylinder 74 that swings the push lever 73. It is configured. Then, depending on the length of the pushing lever 73 and the position of the support shaft 72, the pushing body 52 is set to be brought out of contact with the front portion of the disk portion D at the pushing angle α.

Here, the free end side of the extrusion lever 73 is formed in a bifurcated shape so that the extruded body 52 does not interfere with the blade 22 and the piston rod 62a.
The pressure receiving member retracting device 81 includes a hydraulic pressure receiving member retracting cylinder 82 for retracting the pressure receiving member 25, a position sensor 83 provided in the blade retracting cylinder 62 for detecting the position of the blade 22, and this position. Based on the signal of the sensor 83, a lever interlock mechanism 85 is configured with a control valve 84 that controls the hydraulic pressure supplied from the hydraulic unit 17 to the pressure receiving member extending / retracting cylinder 82, and the raid 22 has an inner sidewall So. After being pressed against the inner surface of the sidewall Si, the pressure receiving member 25 is retracted from the opening 16 by the pressure receiving member retracting cylinder 82.

According to the other embodiments described above, the same operational effects as the previous embodiments can be achieved.
In each of the above embodiments, the wheel-equipped tire T is placed horizontally on the cradle 12 so that the disk portion D is the front. However, the cradle is installed along the vertical surface to receive the wheel-equipped tire T. It can also be installed vertically via tools.

  Moreover, although the hydraulic cylinder was used as a drive device, an air cylinder, an electric jack, etc. can be used.

T tire W wheel So outer side wall Si inner side wall Bo outer bead part Bi inner bead part Lo outer rim Li inner rim D disk part α extrusion angle β pull-out distance 11 apparatus main body 12 cradle 15 support plate 16 opening 16a semicircle Part 16b Parallel part 21 Tire separation and fixing device 22 Blade 23 Press lever 23a Support shaft 24 Blade drive device 24a Piston rod (output shaft)
25 pressure receiving member 26 guide roller 27 coil spring for restraint (constraint biasing member)
28 Adjusting tool 29 Lever interlocking mechanism 31 Pressure receiving member retracting device 32 Slide member (interlocking member)
33 Interlocking rod (interlocking member)
34 Slide hole 35 Guide plate (interlocking member)
36 Slide shaft (interlocking member)
38 cam follower 39 compression coil spring (compression biasing member)
40 Cam plate (cam member)
51 Wheel Extruder 52 Extruder 53 Extrusion Drive 53a Piston Rod (Output Shaft)
54 fulcrum rod (fulcrum member)
57 Holding recess 61 Blade driving device 71 Wheel push-out device 73 Push-out lever 74 Push-out cylinder 81 Pressure-receiving member retracting device 82 Pressure-receiving member retracting cylinder 83 Position sensor 84 Control valve 85 Lever interlocking mechanism

Claims (10)

Place the wheeled tire on the cradle having an opening through which the wheel can pass so that the wheel is positioned corresponding to the opening and the disk part is on the front.
By pressing one end of the outer sidewall of the tire with the blade, the outer bead portion is detached from the outer rim of the wheel,
By fixing the tire to the cradle by pressing the outer sidewall further against the inner surface of the inner sidewall with a blade,
Next, by pushing one end part of the disk part of the wheel to the inner surface side by the extruded body, the wheel is rotated around the fulcrum member arranged on the inner surface side at the other end side and extracted from the tire. How to pull out the wheel. Between the position where the blade is in contact with the outer sidewall and the position where the outer sidewall is pressed against the inner surface of the inner sidewall, the tip of the blade is placed on the outer peripheral side by a pulling distance of 10 mm or more and 50 mm or less. The wheel extraction method according to claim 1, wherein the inner bead portion is pulled out from the opening by being displaced, and the outer bead portion is pressed against the inner surface of the inner sidewall. 3. The wheel extraction according to claim 1, wherein the extruded body is extruded in a direction approaching the tire axis from the outer peripheral side at an extrusion angle of 5 ° to 30 ° with respect to the tire axis. Method. When pressing one end of the outer sidewall by the blade, the pressure receiving member protruding from the opening supports the one end of the wheel from below,
The wheel extraction method according to any one of claims 1 to 3, wherein the pressure receiving member is retracted from the opening before the wheel is pushed out by the extruded body. A cradle in which an opening through which a wheel can pass is formed and a tire with a wheel is disposed;
The blade is driven by the blade drive device, pressing one end of the outer sidewall of the tire on the cradle to disengage the outer bead from the outer rim of the wheel, and further pressing the outer sidewall against the inner surface of the inner sidewall A tire separating and fixing device for fixing the tire to the cradle;
When the extruded body is protruded from the outer peripheral side at a predetermined extrusion angle approaching the tire axis by the extrusion driving device, one end of the disk part of the wheel is pushed into the inner surface side, and the other end when the one end of the wheel is pushed out. A wheel extraction device comprising: a wheel pusher for rotating the wheel and extracting it from the tire with a fulcrum member disposed on the inner surface side at the end side as a rotation fulcrum. The tire separating and fixing device has a blade tip of 10 mm or more on the outer peripheral side of the tire from the position where the blade contacts the outer sidewall of the tire until the outer sidewall is pressed against the inner surface of the inner sidewall. The wheel extraction device according to claim 5, wherein the wheel extraction device is configured to be displaced toward the outer peripheral side by the following drawing distance. The tire separating and fixing device includes a pressing lever having a blade attached to a free end and a fixed end supported by a support shaft so as to be swingable in a vertical direction, and a blade driving device that swings the pressing lever. ,
The wheel according to claim 6, wherein the support shaft is disposed above a wheel center line with a wheel disposed on a pedestal so that the tip of the blade is retracted by a pull-out distance. Extraction device. The wheel extraction device according to any one of claims 5 to 7, wherein an extrusion angle of the extruded body is set to be 10 ° or more and 30 ° or less with respect to a tire axial center. Tire separation and fixing device
A pressure receiving member that is provided on one end side of the opening of the cradle so as to be freely retractable and can support the wheel from below;
A pressure receiving member withdrawing device for retracting the pressure receiving member from the opening before the wheel is pushed out by the extruded body after the outer bead portion is detached from the outer rim of the wheel by the blade. The wheel extraction device according to any one of claims 5 to 8. The pressure receiving member retracting device is constituted by a lever interlocking mechanism that moves the pressure receiving member backward in conjunction with the blade driving device,
The lever interlocking mechanism includes a cam follower attached to the output shaft of the blade drive device via an interlocking member, a cam member attached to the pressure receiving member and abutted against the cam follower, and the cam member to the cam follower. The wheel extraction device according to claim 9, further comprising a restraining urging member to be brought into contact.

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