JP2006051791A - Tire holding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire holding apparatus capable of adjusting a distance between individual rim members in the axial direction in response to a size in the width direction of the tire, and enhancing durability of the tire by a simple structure. <P>SOLUTION: This tire holding apparatus is configured as follows: a spacer ring 32 and a stopper ring 33 are disposed between a rim member 31 and a flange part 12 provided to a rotating shaft 10, where the ring 32 and the ring 33 abut to each other in the axial direction of the shaft 10; a plurality of projections extending in the axial direction of the shaft 10 are formed on the spacer ring 32 so that each projection is insertable into the stopper ring 33. By rotating the stopper ring 33 in the circumferential direction, a prescribed projection abuts to the stopper ring 33 while a part or all of the projections do not insert into the stopper ring 33, thereby the position of the rim member 31 in the axial direction to the rotating shaft 10 can be changed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tire holding device in a tire testing machine that measures tire uniformity and runout, for example, in a manufacturing process of an automobile tire.

  In general, if the weight balance or thickness of the tire in the circumferential direction of the automobile tire is biased, it may cause a decrease in the running performance of the tire. Therefore, the quality of the tire after vulcanization molding is determined by a tire testing machine in the tire manufacturing process. I am inspecting. For example, the measurement of uniformity, which is one of the tire qualities, is performed by holding the tire with a pair of rim members attached to opposite ends of a pair of upper and lower rotating shafts, rotating the tire by applying an internal pressure, This is done by bringing a measuring machine into contact with the outer peripheral surface. Here, since the width dimension of the inner peripheral portion of the tire differs depending on the type of tire, the axial interval between the rim members needs to be changed depending on the type of tire. This change is performed by replacing each rim member itself. If so, it takes a lot of work time and is not efficient.

Therefore, as a tire testing machine capable of changing the axial interval of each rim member without replacing each rim member, it was attached to the upper rotating shaft fixed in the axial direction and the lower end side of the upper rotating shaft. An upper rim member, a lower support member that is movable in the vertical direction by a hydraulic cylinder, and a lower support member that is mounted on the upper side of the lower support member so as to be movable in the vertical direction by a hydraulic cylinder and that is in contact with the upper rotating shaft. And a lower rim member rotatably attached to the upper end side of the lower support member, and the lower rotary shaft is adjusted by a hydraulic cylinder in accordance with the width dimension of the inner peripheral portion of the tire. A device is known that is moved in the vertical direction to adjust the interval between the rim members in the axial direction (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-160643

  By the way, when an internal pressure is applied to the tire mounted on each rim member, a large force in the axial direction of the rotating shaft acts on each rim member due to the internal pressure. When this force increases the axial interval between the rim members, the tire The inner peripheral portion of the tire is not in an appropriate width dimension, and the measurement accuracy of the tire testing machine is lowered. Therefore, when the axial distance between the rim members is adjusted by the hydraulic cylinder as in the above-described device, a hydraulic cylinder having a large output that does not move due to the internal pressure of the tire is used, or the rotation shaft of each rim member is used. It is necessary to provide another mechanism for restricting the movement in the axial direction. For this reason, the apparatus becomes complicated, and there has been a problem in that the apparatus breaks down and the manufacturing cost of the apparatus increases.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to adjust the axial interval of each rim member according to the size in the width direction of the tire and to provide a simple structure. An object of the present invention is to provide a tire holding device capable of enhancing durability.

  In order to achieve the above object, the present invention includes a pair of support shafts arranged to face each other in the axial direction, and a pair of rim members respectively attached to opposing ends of the support shafts. In the tire holding device in which the tire of any size in the width direction is held by each rim member by changing the axial interval of the rim member, one of the rim members can be moved in the axial direction with respect to the support shaft. In addition to providing the abutting portions that abut each other in the axial direction at an arbitrary position in the circumferential direction of the rim member on the rim member side and the support shaft side, and by changing the abutting positions of the respective abutting portions in the circumferential direction. It forms so that it may contact | abut in the position where an axial direction differs.

  Further, the present invention includes a pair of support shafts arranged to face each other in the axial direction, and a pair of rim members respectively attached to opposing ends of the respective support shafts. In the tire holding device in which the tire of any size in the width direction is held by each rim member, each rim member is provided so as to be movable in the axial direction with respect to the support shaft, and each rim member side In addition, a contact portion that contacts the rim member in the axial direction at an arbitrary position in the circumferential direction of the rim member is provided on each support shaft side, and the contact portion on the rim member side and the contact portion on the support shaft side are arranged in the circumferential direction. By changing the contact position, it is formed so as to contact at different positions in the axial direction.

  Thereby, the space | interval of the axial direction of each rim member is arbitrarily adjusted according to the size of the width direction of a tire by changing the contact position of each said contact part to the circumferential direction mutually. At that time, since the abutting portion on the rim member side abuts on the abutting portion on the support shaft side in the axial direction of the support shaft, each rim member can be applied even if a large force in the axial direction of the support shaft acts on each support member The axial spacing of these does not change easily.

  According to the present invention, by changing the contact positions of the respective contact portions in the circumferential direction, the axial interval of each rim member is adjusted according to the size in the tire width direction. The interval in the axial direction of the members can be changed easily and quickly. Further, even if a large force in the axial direction of the support shaft is applied to each support member, the distance between the rim members in the axial direction is not easily changed. For example, in order to resist the tire internal pressure, each rim member It is not necessary to provide a dedicated mechanism for fixing the shaft in the axial direction, and a highly durable device can be configured with a simple structure.

  1 to 8 show a first embodiment of the present invention. FIG. 1 is a partially sectional schematic front view of a tire testing machine, FIG. 2 is a partially sectional front view of a tire support, and FIG. 3 is a tire. FIG. 4 is a bottom view of the tire support portion, FIG. 5 is an explanatory view of the structure of the tire support portion, FIG. 6 is a plan view and a partial cross-sectional front view of the tire support portion, and FIG. FIG. 8 is a plan view and a partial cross-sectional front view of the tire support portion after further changing the axial interval of each rim member. FIG.

  Hereinafter, a tire testing machine for performing a uniformity inspection of a tire TA for an automobile will be described with reference to FIG.

  The tire testing machine of the present embodiment includes a tire testing machine body 1 having a tire holding device that holds a tire TA, an upper rotating shaft 10 and a lower rotating shaft 20 that are rotatably supported by the tire testing machine body 1. And an upper tire support portion 30 provided on the lower end side of the upper rotary shaft 10 and a lower tire support portion 40 provided on the upper end side of the lower rotary shaft 20.

  The tire testing machine main body 1 includes a base 2 for installing the tire testing machine main body 1 at a predetermined position, a frame 4 supported on the base 2 via a plurality of support columns 3, and tire support portions 30 and 40. A well-known measuring means 5 for measuring the uniformity of the held tire TA and a transport roller 6 for transporting the tire TA between the tire support portions 30 and 40 are provided. The measuring means 5 is provided so as to be movable in the horizontal direction, and comes into contact with the outer peripheral surface of the tire TA held by the tire support members 30 and 40. The transport roller 6 is formed by arranging a plurality of rollers spaced from each other, and transports the tire TA from the back side to the front side in FIG.

  The upper rotating shaft 10 is rotatably supported by the frame 4 via a bearing 11 and is rotated by a driving means 7. A flange portion 12 is formed on the lower end side of the upper rotating shaft 10, and a collet chuck 13 that can be expanded and contracted by hydraulic pressure is provided on the shaft portion on the lower end side of the flange portion 12. Further, an engagement hole 14 whose inner diameter gradually decreases toward the upper side is provided at the lower end surface of the upper rotary shaft 10, and a discharge hole 15 communicating with a compressor (not shown) is provided at the center of the engagement hole 14. It has been.

  The lower rotary shaft 20 is disposed on the same axis as the upper rotary shaft 10 and is rotatably supported on the upper end portion of the hydraulic cylinder 21 fixed to the base 1 via a bearing 21a. It is designed to move up and down. A flange portion 22 is formed on the upper end side of the lower rotary shaft 20, and a collet chuck 23 that can be expanded and contracted by hydraulic pressure is provided on the shaft portion on the upper end side of the flange portion 22. Further, the upper end surface of the lower rotating shaft 20 is provided with an engaging protrusion 24 whose outer diameter gradually decreases toward the upper side, and when the engaging protrusion 24 and the engaging hole 14 are engaged, The upper rotary shaft 10 and the lower rotary shaft 20 are positioned on the same axis. The engagement protrusion 24 is provided with a communication hole 25 communicating from the upper end portion to the side surface portion. After the engagement protrusion 24 and the engagement hole 14 are engaged, compressed air from a compressor (not shown) is discharged from the discharge hole 15. And it discharges from the side part of the engagement protrusion 24 through the communicating hole 25.

  The tire support portions 30 and 40 are respectively disposed between the rim members 31 and 41 for holding the tire TA, and the rim members 31 and 41 and the flange portions 12 and 22 of the rotary shafts 10 and 20. Spacer rings 32 and 42 as contact rings, stopper rings 33 and 43 as other contact rings arranged between the spacer rings 32 and 42 and the rotary shafts 10 and 20, and stopper rings 33 , 43 are provided with cylinders 34, 44 for rotating the rotary shafts 10, 20 in the circumferential direction. The tire support portions 30 and 40 have the same structure, and are attached to the rotary shafts 10 and 20 so that the rim members 31 and 41 are opposed to each other. The rim members 31 and 41, the spacer rings 32 and 42, and the stopper rings 33 and 43 are detachably attached to the rotary shafts 10 and 20, respectively.

  The rim members 31 and 41 are disposed on the outer peripheral side of the collet chucks 13 and 23 of the rotary shafts 10 and 20 so that the collet chucks 13 and 23 have an increased diameter and support the inner peripheral surfaces of the rim members 31 and 41. It has become. A rim portion having an outer diameter larger than the inner diameter of the inner peripheral portion of the tire TA is formed on one end side in the axial direction of each rim member 31, 41, and the other portion is formed smaller than the inner diameter of the inner peripheral portion of the tire TA. The tire TA is held by the rim portion.

  Each spacer ring 32, 42 is formed with a plurality of first protrusions 32a, 42a and second protrusions 32b, 42b at one end face at intervals in the circumferential direction. Each protrusion 32a, 32b, 42a, 42b is formed in a cylindrical shape having the same outer diameter so as to extend in the axial direction of each rotary shaft 10,20. Each of the second protrusions 32b and 42b is longer in the axial direction than each of the first protrusions 32a and 42a, and each of the first protrusions 32a and 42a has the same length in the axial direction. Both the protrusions 32b and 42b have the same length in the axial direction. Furthermore, each 1st protrusion 32a, 42a and each 2nd protrusion 32b, 42b are arrange | positioned so that it may rank with the circumferential direction of each spacer ring 32,42.

  Each stopper ring 33, 43 has a plurality of insertion holes 33a, 43a through which the first protrusions 32a, 42a of the spacer rings 32, 42 can be inserted, and a plurality of insertions through which the second protrusions 32b, 42b can be inserted. Holes 33b and 43b are formed. Protrusions 33c and 43c provided so as to extend in the axial direction are formed on the outer peripheral side of each spacer ring, and a plurality of rollers 33d and 43d are provided in the protrusions 33c and 43c at intervals in the circumferential direction. Installed. The stopper rings 33 and 43 are attached to the flange portions 12 and 22 of the rotary shafts 10 and 20 by the rollers 33d and 43d so as to be movable in the circumferential direction, and are restricted from moving in the axial direction with respect to the rotary shafts 10 and 20. ing. Further, the flange portions 12 and 22 have a plurality of insertion holes 12a and 22a through which the first protrusions 32a and 42a of the spacer rings 32 and 42 can be inserted, and a plurality of holes through which the second protrusions 32b and 42b can be inserted. Insertion holes 12b and 22b are formed.

  Each cylinder 34, 44 is formed by connecting two air cylinders in the axial direction so that the respective rods are arranged on both ends, and the tip of one rod is the flange portion 12 of each rotary shaft 10, 20. 22 and the tip of the other rod is connected to the protrusions 33c and 43c of the stopper rings 33 and 43, respectively. That is, the stopper rings 33 and 43 are rotated in the circumferential direction with respect to the rotary shafts 10 and 20 by the cylinders 34 and 44, respectively. Specifically, in a predetermined position in three stages of a state where both rods of the two air cylinders of each cylinder 34, 44 are extended, a state where one rod is extended, and a state where both rods are not extended, The stopper rings 33 and 43 are rotated.

  In the tire testing machine configured as described above, first, the lower tire support portion 40 is disposed below the transport roller 6 by the hydraulic cylinder 21, and the tire TA after vulcanization molding is transported by the transport roller 6. The tire support portions 30 and 40 are arranged on substantially the same axis. In this state, the lower tire support portion 40 is raised by the hydraulic cylinder 21, the inner peripheral portion of the tire TA is supported by the rim member 41, and the engagement protrusion 24 of the lower rotary shaft 20 and the upper rotary shaft 10 are supported. The engagement hole 14 is engaged. Accordingly, as shown in FIGS. 2 to 4, the tire TA is held by the rim member 31 of the upper tire support portion 30 and the rim member 41 of the lower tire support portion 40. Next, compressed air is discharged from the compressor (not shown) through the discharge hole 15 and the communication hole 25 into the tire TA to apply an internal pressure to the tire TA, and the upper rotating shaft 10 is rotated by the driving means 7 to thereby rotate the tire. The uniformity of the tire TA is measured by rotating the TA and bringing the measuring means 5 into contact with the outer peripheral surface of the tire TA. At this time, a large force is exerted on the rim members 31 and 41 in the axial direction of the rotary shafts 10 and 20 by the compressed air that applies the internal pressure to the tire TA, but the rim members 31 and 41, the spacer rings 32 and 42, Since each stopper ring 33 and 43 and each flange part 12 and 22 are contact | abutting to the axial direction of each rotating shaft 10 and 20, the space | interval of the axial direction of the rim member 31 and the rim member 41 does not change.

  Here, for example, a case where the distance between the rim member 31 and the rim member 41 is adjusted in order to measure the uniformity of the tire TA having a small inner peripheral width will be described with reference to FIGS. . In the state shown in FIG. 6, the protrusions 32a, 32b, 42a, 42b of the spacer rings 32, 42 are inserted into the insertion holes 33a, 33b, 43a, 43b of the stopper rings 33, 43 and the flanges 12, 22, respectively. The rim members 31 and 41 and the flange portions 12 and 22 are closest to each other through the insertion holes 12a, 12b, 22a and 22b. In order to obtain the state shown in FIG. 7, first, each collet chuck 13, 23 is reduced in diameter, and each rim member 31, 41 is gripped by a gripping means CA as a moving means that can move in the axial direction. The rim members 31 and 41 are moved away from the flange portions 12 and 22. The spacer rings 32 and 42 are also moved together with the rim members 31 and 41, and the protrusions 32a, 32b, 42a and 42b are moved through the insertion holes 33a, 33b, 43a and 43b and the insertion holes 12a, 12b, 22a, Extract from 22b.

  Next, with each cylinder 34, 44 extending only one rod, the stopper rings 33, 43 are rotated in the circumferential direction so that the insertion holes 33a, 43a communicate with the insertion holes 12b, 22b. In addition, the insertion holes 12a and 22a are closed by the spacer rings 33 and 43, respectively. Subsequently, the rim members 31, 41 and the spacer rings 32, 42 are moved by the gripping means CA, and the first protrusions 32a, 42a of the spacer rings 32, 42 and the stopper rings 33, 43 are brought into contact with each other. In this state, the diameters of the collet chucks 13 and 23 are expanded, and the rim members 31 and 41 are positioned.

  Further, when measuring the tire TA having a smaller width at the inner peripheral portion, as shown in FIG. 8, when rotating the stopper rings 33 and 43 in the circumferential direction, both of the cylinders 34 and 44 are measured. The rods are not extended, and the insertion holes 12a, 12b, 22a, 22b are closed by the stopper rings 33, 43. The second protrusions 32b, 42b of the spacer rings 32, 42 and the stopper rings 33 and 43 are brought into contact with each other.

  As shown in FIGS. 7 and 8, even after adjusting the axial distance between the rim member 31 and the rim member 41, the rim members 31, 41, the spacer rings 32, 42, and the stopper rings 33, 43 are adjusted. And since each flange part 12 and 22 will contact | abut in an axial direction, the space | interval of the axial direction of the rim member 31 and the rim member 41 does not change with the internal pressure applied to the tire TA.

  Thus, according to the tire testing machine having the tire holding device of the present embodiment, the tire support portions 30 and 40 are provided at the opposed end portions of the rotary shafts 10 and 20 arranged vertically on the same axis, The rim members 31 and 41 for holding the tire TA are attached to the tire support portions 30 and 40, respectively, and between the rim members 31 and 41 and the flange portions 12 and 22 provided on the rotary shafts 10 and 20, respectively. A plurality of spacer rings 32 and 42 and stopper rings 33 and 43 are provided to abut on the axial directions of the rotary shafts 10 and 20, respectively, and a plurality of spacer rings 32 and 42 extend in the axial direction of the rotary shafts 10 and 20. The protrusions 32a, 32b, 42a, 42b are formed, and the stopper rings 33, 43 are formed so that the protrusions 32a, 32b, 42a, 42b can be inserted therethrough. By rotating the ring members 33 and 43 in the circumferential direction, a part of the protrusions 32a, 32b, 42a and 42b are not inserted through the stopper rings 33 and 43, and the predetermined protrusions and the stopper rings 33 are inserted. , 43 are in contact with each other, and the axial positions of the rim members 31, 41 with respect to the rotary shafts 10, 20 are changed, so that the rim member 31 and the rim member according to the width dimension of the inner peripheral portion of the tire. The distance between the rotary shafts 10 and 20 can be adjusted, and the rim members 31 and 41 can be supported in the axial direction of the rotary shafts 10 and 20 against the internal pressure of the tire. Therefore, there is no need to provide a hydraulic cylinder for adjusting the distance between the rim member 31 and the rim member 41 or another mechanism for preventing the distance between the rim member 31 and the rim member 41 from being changed by the internal pressure applied to the tire TA. Therefore, the tire holding device can be a device having a simple structure, and the durability of the device can be improved.

  Further, since the spacer rings 32 and 42 and the stopper rings 33 and 43 are detachably attached to the rotary shafts 10 and 20, the rim member can be obtained by replacing the spacer rings 32 and 42 and the stopper rings 33 and 43. It is possible to arbitrarily set the distance between 31 and the rim member 41.

  Further, the first protrusions 32a and 42a of the spacer rings 32 and 42 are formed to have the same length in the axial direction, and the second protrusions 32b and 42b are formed to have the same length in the axial direction. The rim members 31 and 41 are moved by an equal distance in the axial direction of the rotary shafts 10 and 20 so that the central positions of the rim members 31 and rim members 41 in the axial direction of the rotary shafts 10 and 20 do not move. The distance between the rim member 31 and the rim member 41 can be adjusted. Thereby, even if the space | interval of the rim member 31 and the rim member 41 is adjusted, it is not necessary to adjust the height position of the measurement means 5, and the structure of a tire testing machine can be simplified.

  Further, each cylinder 34, 44 is formed by connecting two air cylinders in the axial direction so that the respective rods are arranged on both ends, and the tip of one rod is connected to each rotary shaft 10, 20. At the same time, the tip of the other rod is connected to the protrusions 33c and 43c of the stopper rings 33 and 43, both rods of the cylinders 34 and 44 are extended, one rod is extended and both Since the stopper rings 33 and 43 are rotated to predetermined positions in three stages in a state where the rods are not extended, complicated control such as detecting the rotation angle of the stopper rings 33 and 43 is used. Therefore, the stopper rings 33 and 43 can be reliably rotated to a predetermined rotation position.

  In the present embodiment, each spacer ring 32, 42 is provided with two kinds of heights of the first protrusions 32a, 42a and the second protrusions 32b, 42b, but the height of the protrusions is one kind. It is also possible to have three or more types.

  Further, in the present embodiment, the protrusions are provided on the spacer rings 32 and 42. However, the protrusions may be provided on the flange portions 12 and 22 so that the protrusions and the rim members 31 and 41 are in direct contact with each other. It is. Alternatively, it is possible to provide a protrusion on each rim member 31, 41 so that the protrusion and the flanges 12, 22 are in direct contact with each other. In these cases, the distance between the rim member 31 and the rim member 41 can be adjusted by rotating at least one of the flange portions 31 and 41 and the rim members 31 and 41.

  In this embodiment, each spacer ring 32 having cylindrical protrusions 32a, 32b, 42a, 42b and stopper rings 33, 43 through which the protrusions 32a, 32b, 42a, 42b can be inserted, The gap between the member 31 and the rim member 41 is adjusted. However, as shown in FIG. 9, one abutment ring is provided between each rim member 31, 41 and each flange portion 12, 22. It is also possible to provide a spacer ring 50 and a stopper ring 51 as the other contact ring.

  Specifically, the spacer ring 50 is formed with a first protrusion 50a and a second protrusion 50b at a plurality of locations on one end face thereof at intervals in the circumferential direction. Each protrusion 50a, 50b is formed in a cylindrical shape having the same outer diameter so as to extend in the axial direction of each rotary shaft 10, 20, and the second protrusion 50b is formed longer in the axial direction than the first protrusion 50a. ing. Further, the stopper ring 51 is formed with protrusions 51a and 51b so as to contact the protrusions 50a and 50b of the spacer ring 50 in the axial direction of the rotary shafts 10 and 20, respectively. Each protrusion 51a, 51b is formed in a columnar shape having the same outer diameter so as to extend in the axial direction of each rotary shaft 10, 20, and when the protrusion 51a and the protrusion 50b abut, the protrusion 51b and the protrusion 50a is formed so as to abut.

  In this case, the distance between the rim member 31 and the rim member 41 is adjusted by rotating the stopper ring 51 by the cylinders 34 and 44, for example, as shown in FIG. Make contact. Therefore, by rotating the stopper ring 51, the distance between the rim member 31 and the rim member 41 can be adjusted, and the rim members 31, 41 can be supported against the internal pressure of the tire.

  Further, as shown in FIG. 11, a spacer ring 60 and a stopper ring 61 can be provided instead of the spacer ring 50 and the stopper ring 51. Specifically, the spacer ring 60 is formed with protrusions 60a at a plurality of locations on one end face thereof at intervals in the circumferential direction, and the protrusions 60a have a predetermined inclination angle α with the axial direction of the rotary shafts 10 and 20. An inclined surface is formed. Further, the stopper ring 61 is formed with a protrusion 61a having an inclined surface that forms a predetermined angle α with the rotary shafts 10 and 20 along the inclined surface of each protrusion 60a of the spacer ring 60. The inclined surfaces 60a and 61a are in contact with each other in the axial direction of the rotary shafts 10 and 20.

  In this case, the distance between the rim member 31 and the rim member 41 is adjusted by rotating the stopper ring 61 by the cylinders 34, 44. For example, as shown in FIG. The circumferential contact position with the protrusion 61a changes, the distance between the rim member 31 and the rim member 41 can be adjusted, and the rim members 31, 41 are supported against the internal pressure of the tire. Can do.

  In the present embodiment, the gripping means CA is used as means for moving the rim members 31 and 41 in the axial direction of the rotary shafts 10 and 20, but as shown in FIG. A plurality of cylinders AS are fixed to the cylinders 12 and 22, and the rim members 31 and 41 are supported by the tips of the rod portions. The cylinders AS support the rim members 31 and 41 with respect to the rotary shafts 10 and 20. Then, it may be moved in the axial direction. Thereby, it is not necessary to support the rim members 31 and 41 by the collet chucks 13 and 23, and the structure of the tire holding device can be simplified. In order to allow the stopper members 33 and 43 to rotate, it is necessary to insert the rod portions of the cylinder AS into the stopper members 33 and 43 and to provide long holes 33e and 43e extending in the circumferential direction.

  Furthermore, in this embodiment, the spacer members 33 and 43 are rotated in the circumferential direction of the rotary shafts 10 and 20 by the cylinders 34 and 44. However, as shown in FIG. Worm gears 33f and 43f as driven side gears are formed, and a worm shaft 72 as a drive side gear driven by a motor 71 is provided, and the worm shaft 72 is connected to the worm gears 33f and 43f by a rail 73. It is also possible to provide a driving device 70 configured to be compatible, and to rotate the spacer members 33 and 43 in the circumferential direction of the rotary shafts 10 and 20 by the rotation of the worm shaft 72.

  15 to 23 show a second embodiment of the present invention. FIG. 15 is a partially sectional front view of a tire testing machine, FIG. 16 is a view in the direction of arrow A in FIG. 15, and FIG. 18 is a sectional view taken along the line CC in FIG. 15, FIG. 19 is a sectional view taken along the line DD in FIG. 15, FIG. 20 is a perspective view of the main part of the tire holding device, and FIG. FIG. 22 is a front view of a tire support portion showing a state in which each rim member is moved in the axial direction with respect to each rotational axis, and FIG. 23 is a diagram showing the axial interval between the rim members. It is the top view and partial cross section front view of a tire support part which show the state after adjusting. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st Embodiment.

  The tire holding device of the present embodiment is provided in a tire testing machine that performs a uniformity inspection of a tire TA for an automobile, and an upper rotating shaft 110 as a support shaft that is rotatably supported by the tire testing machine main body 100. And the lower rotating shaft 120, the upper tire supporting portion 130 provided on the lower end side of the upper rotating shaft 110, and the lower tire supporting portion 140 provided on the upper end side of the lower rotating shaft 120, It has.

  The tire testing machine main body 100 includes a base 101 for installing the tire testing machine main body 100 at a predetermined position, a frame 103 supported by the base 101 via a plurality of support columns 102, and tire support portions 130 and 140. A well-known measuring means 104 for measuring the uniformity of the held tire TA and a transport roller 105 for transporting the tire TA between the tire support portions 130 and 140 are provided. The measuring means 104 is provided so as to be movable in the horizontal direction, and comes into contact with the outer peripheral surface of the tire TA held by the tire support portions 130 and 140. The transport roller 105 is formed from a plurality of rollers arranged at intervals, and transports the tire TA from the heel side to the near side in FIG.

  The upper rotating shaft 110 is rotatably supported by a frame 103 via a bearing 111 and is rotated by a motor 106 as a rotating mechanism including a known servo motor fixed to the frame 103. A flange portion 112 is formed on the lower side of the upper rotary shaft 110, and a collet chuck 113 that can be expanded and contracted by hydraulic pressure is provided on the shaft portion on the lower end side of the flange portion 112. Further, an engagement hole 114 whose inner diameter gradually decreases toward the upper side is provided on the lower end surface of the upper rotating shaft 110, and a discharge hole 115 communicating with a compressor (not shown) is provided at the center of the engagement hole 114. It has been. Further, the outer peripheral surface on the upper end side of the upper rotating shaft 110 is provided with a notch 110a in one place in the circumferential direction. A known proximity sensor 110 b capable of detecting the notch 110 a is provided on the outer peripheral surface side of the notch 110 a, and the proximity sensor 110 b is fixed to the frame 103.

  The lower rotating shaft 120 is disposed on the same axis as the upper rotating shaft 110, and can be freely rotated via a bearing 121b on a housing 121a provided at the upper end of a hydraulic cylinder 121 fixed to the base 101. It is supported and moved up and down by a hydraulic cylinder 121. A flange portion 122 is formed on the upper end side of the lower rotating shaft 120, and a collet chuck 123 that can be expanded and contracted by hydraulic pressure is provided on the shaft portion on the upper end side of the flange portion 122.

  Further, the upper end surface of the lower rotating shaft 120 is provided with an engaging protrusion 124 whose outer diameter gradually decreases toward the upper side. When the engaging protrusion 124 and the engaging hole 114 are engaged, The rotary shaft 110 and the lower rotary shaft 120 are positioned on the same axis. The engagement protrusion 124 is provided with a communication hole 125 communicating from the upper end portion to the side surface portion. When the engagement protrusion 124 and the engagement hole 114 are engaged, compressed air from a compressor (not shown) is discharged from the discharge hole 115. In addition, the liquid is discharged from the side surface portion of the engagement protrusion 124 through the communication hole 125.

  Further, a motor 121c as a rotation mechanism made of a known servo motor is fixed to the outer peripheral surface of the housing 121a of the hydraulic cylinder 121, and the lower rotary shaft 120 is rotated via a belt. Further, the outer peripheral surface on the lower end side of the lower rotating shaft 120 is provided with a notch 120a at one location in the circumferential direction. A known proximity sensor 120b capable of detecting the notch 120a is provided on the outer peripheral surface side of the notch 120a, and the proximity sensor 120b is fixed to the housing 121a.

  The upper tire support portion 130 includes a rim member 131 for holding the tire TA, and the rim member 131 is detachably attached to the upper rotating shaft 110. That is, the rim member 131 is disposed on the outer peripheral surface side of the collet chuck 113 of the upper rotary shaft 110, and the rim member 131 is supported by the upper rotary shaft 110 when the diameter of the collet chuck 113 is increased. A rim portion 131a formed larger than the inner diameter of the inner peripheral portion of the tire TA is provided on one end side in the axial direction of the rim member 131, and the other portion is formed smaller than the inner diameter of the inner peripheral portion of the tire TA. The tire TA is held by 131a.

  A plurality of first protrusions 131b and second protrusions 131c are provided on one end surface of the rim member 131 at intervals in the circumferential direction. Each protrusion 131b, 131c is formed in a cylindrical shape having the same outer diameter so as to extend in the axial direction of the upper rotating shaft 110, and the second protrusion 131c is formed longer in the axial direction than the first protrusion 131b. Yes. On the other hand, the flange portion 112 of the upper rotating shaft 110 is provided with an insertion hole 112a through which the first protrusion 131b can be inserted, and an insertion hole 112b through which the second protrusion 131c can be inserted. When 131b and 131c are inserted into the respective insertion holes 112a and 112b, one end surface of the rim member 131 comes into contact with the flange portion 112 in the axial direction.

  In addition, a moving mechanism 132 that can move the rim member 131 in the axial direction of the upper rotating shaft 110 is provided on the outer peripheral surface side of the rim member 131. The cylinders 133 are arranged at a plurality of positions at intervals, and the support mechanisms 134 that support the cylinders 133 so as to be movable in the vertical direction.

  Each cylinder 133 is composed of a well-known air cylinder, and is arranged with the tip of the rod facing the rim 131 side. A gripping portion 133a is attached to the tip of the rod, and when the rod is extended, the gripping portion 133a comes into contact with the outer peripheral surface of the rim 131.

  Each support mechanism 134 includes a support mechanism main body 135 that extends downward from the frame 103, and a rail 136 and a ball screw 137 that are provided along the support mechanism main body 135.

  The support mechanism main body 135 is formed such that the lower end surface is positioned below the lower end surface of the upper rotating shaft 110, and a concave portion 135a extending in the vertical direction is formed on the side surface.

  The rail 136 is provided so as to extend vertically on the side surface of the support mechanism main body 135 where the concave portion 135a is formed, and supports the movable base 133b to which the cylinder 133 is attached so as to be movable along the rail 136. Yes.

  The ball screw 137 is provided in the concave portion 135a of the support mechanism main body 135 so as to extend in the vertical direction, is screwed with the movable base 133b, and is rotated by a motor (not shown). That is, by rotating the ball screw 137, the cylinder 133 moves in the vertical direction.

  The lower tire support portion 140 includes a rim member 141 for holding the tire TA, and the rim member 141 is detachably attached to the lower rotating shaft 120. That is, the rim member 141 is disposed on the outer peripheral surface side of the collet chuck 123 of the lower rotating shaft 120, and when the diameter of the collet chuck 123 is increased, the rim member 141 is supported by the lower rotating shaft 120. Yes. A rim portion 141a formed larger than the inner diameter of the inner peripheral portion of the tire TA is provided on one end side in the axial direction of the rim member 141, and the other portion is formed smaller than the inner diameter of the inner peripheral portion of the tire TA. The tire TA is held by 141a.

  A plurality of first protrusions 141b and second protrusions 141c are provided on one end surface of the rim member 141 at intervals in the circumferential direction. Each of the protrusions 141b and 141c is formed in a columnar shape having the same outer diameter so as to extend in the axial direction of the lower rotating shaft 120, and the second protrusion 141c is formed longer in the axial direction than the first protrusion 141b. ing. Here, the first protrusion 141b is formed to have the same axial length as the first protrusion 131b of the rim member 131, and the second protrusion 141c is formed to have the same axial length as the second protrusion 131c. ing. On the other hand, the flange portion 122 of the lower rotating shaft 120 is provided with an insertion hole 122a through which the first protrusion 141b can be inserted, and an insertion hole 122b through which the second protrusion 141c can be inserted. When the portions 141b and 141c are inserted into the insertion holes 122a and 122b, one end surface of the rim member 141 is brought into contact with the flange portion 122 in the axial direction.

  Further, a moving mechanism 142 that can move the rim member 141 in the axial direction of the lower rotating shaft 120 is provided on the outer peripheral surface side of the rim member 141, and the moving mechanism 142 is arranged on the outer peripheral surface side of the rim member 141. It is comprised from the cylinder 143 arrange | positioned in the several places at intervals in the circumferential direction, and the support mechanism 144 which supports each cylinder 143 so that a movement to an up-down direction is possible respectively.

  Each cylinder 143 is a well-known air cylinder, and is arranged with the tip of the rod facing the rim 141 side. A gripping part 143a is attached to the tip of the rod. When the rod is extended, the gripping part 143a comes into contact with the outer peripheral surface of the rim 141.

  Each support mechanism 144 includes a support mechanism main body 145 extending upward from the base 101, and a rail 146 and a ball screw 147 provided along the support mechanism main body 145.

  The support mechanism main body 145 is formed so that the upper end surface is located above the upper end surface of the lower rotating shaft 120, and a concave portion 145a extending in the vertical direction is formed on the side surface.

  The rail 146 is provided to extend in the vertical direction on the side surface of the support mechanism main body 145 where the concave portion 145a is formed, and supports the movable base 143b to which the cylinder 143 is attached so as to be movable along the rail 146. Yes.

  The ball screw 147 is provided in the concave portion 145a of the support mechanism main body 145 so as to extend in the vertical direction, is screwed with the movable base 143b, and is rotated by a motor (not shown). That is, by rotating the ball screw 147, the cylinder 143 moves up and down.

  In the tire holding device configured as described above, first, the lower rotating shaft 120 is disposed below the conveying roller 105 by the hydraulic cylinder 121, and the tire TA after vulcanization molding is transferred to each tire by the conveying roller 105. It arrange | positions on the same axis line as the support parts 130 and 140. FIG. In this state, the lower rotating shaft 120 is raised by the hydraulic cylinder 121 and the inner peripheral portion of the tire TA is supported by the rim member 141, and the engagement protrusion 124 of the lower rotating shaft 120 and the upper rotating shaft 110 are supported. The engagement hole 114 is engaged. Accordingly, the tire TA is held by the rim members 131 and 141.

  Next, compressed air is discharged from the compressor (not shown) through the discharge hole 115 and the communication hole 125 into the tire TA, and an internal pressure is applied to the tire TA. Further, the upper rotating shaft 110 is rotated by the motor 106, and the measuring means 104 is brought into contact with the outer peripheral surface of the tire TA to measure the uniformity of the tire TA. At this time, by applying an internal pressure to the tire TA, a large force is exerted on each rim member 131, 141 in a direction away from each other, but one end face of each rim member 131, 141 and each flange portion 112, 122 are axially moved. Since they are in contact, the distance between the rim members 131 and 141 does not change.

  Here, for example, a case where the distance between the rim members 131 and 141 is adjusted in order to measure the uniformity of the tire TA having a small width at the inner peripheral portion will be described with reference to FIGS.

  In the state shown in FIG. 21, the protrusions 131 b, 131 c, 141 b, 141 c of the rim members 131, 141 are inserted through the insertion holes 112 a, 112 b, 122 a, 122 b of the flange portions 112, 122, respectively. , 141 and the flanges 112, 122 are in axial contact with each other.

  In order to obtain the state shown in FIG. 23, first, the rotating shafts 110 and 120 are rotated to positions where the notches 110a and 120a are detected by the proximity sensors 110b and 120b, and the cylinders 133 and 143 are moved to the respective positions. It arrange | positions at the outer peripheral surface side of the rim members 131 and 141, the rod of each cylinder 133,143 is extended, and each holding part 133a, 143a is contact | abutted to the outer peripheral surface of each rim member 131,141. Next, as shown in FIG. 22, by reducing the diameter of the collet chuck 113 and moving the cylinders 133 downward, the protrusions 131b and 131c and the insertion holes 112a and 112b are connected to the upper rotating shaft 110. The rim member 131 is moved in the axial direction to a position where it is not engaged in the circumferential direction. Further, by reducing the diameter of the collet chuck 123 and moving the cylinders 143 upward, the protrusions 141b and 141c and the insertion holes 122a and 122b are not engaged with each other in the circumferential direction of the lower rotary shaft 120. The rim member 141 is moved in the axial direction.

  In this state, the upper rotating shaft 110 is rotated by a predetermined angle by the motor 106 so that the second protrusion 131c can be inserted into the insertion hole 112a, and the protrusion 141c can be inserted into the insertion hole 122a. The lower rotating shaft 120 is rotated by a predetermined angle by the motor 121c.

  Subsequently, by moving each cylinder 133 upward, the second protrusion 131c is inserted into the insertion hole 112a and the first protrusion 131b is brought into axial contact with the flange portion 112, thereby expanding the collet chuck 113. As a result, the rim member 131 is supported on the upper rotating shaft 110. Further, by moving each cylinder 143 downward, the second protrusion 141c is inserted into the insertion hole 122a, and the first protrusion 141b is brought into axial contact with the flange part 122 to expand the diameter of the collet chuck 123. Thus, the rim member 141 is supported on the lower rotating shaft 120.

  Each cylinder 133 releases the contact between each gripping portion 133a and the rim member 131 and moves to the frame 103 side, and each cylinder 143 releases the contact between each gripping portion 143a and the rim member 141 and the base 101 side. Move to.

  The rim members 131 and 141 are applied to the tire TA because the first protrusions 131b and 141b and the flange portions 112 and 122 abut against each other even after the distance between the rim members 131 and 141 is adjusted. The interval between the rim members 131 and 141 does not change due to the internal pressure.

  As described above, when adjusting the distance between the rim members 131 and 141, the rotary shafts 110 are moved to positions where the protrusions 131b, 131c, 141b, and 141c are not inserted into the insertion holes 112a, 112b, 122a, and 122b. , 120 can be rotated to further approximate the distance between the rim members 131, 141.

  As described above, according to the tire holding device of the present embodiment, the rim members 131 and 141 are detachably attached to the rotary shafts 110 and 120, and a plurality of axially extending end surfaces of the rim members 131 and 141 are extended. The first protrusions 131b and 141b and a plurality of second protrusions 131c and 141c that are longer in the axial direction than the first protrusions 131b and 141b are provided, and the flanges 112 and 122 of the support shafts 110 and 120 are provided. Insertion holes 112a, 112b, 122a, and 122b through which the protrusions 131b, 131c, 141b, and 141c can be inserted are provided, and the positions of the flanges 112 and 122 and the rim members 131 and 141 are changed in the circumferential direction. Since each protrusion is inserted into the insertion hole when only the second protrusion is inserted into the insertion hole, each protrusion is inserted into the insertion hole. It is possible to change the spacing between each of the rim members 131 and 141 in the absence.

  Moreover, since each rim member 131,141 and each flange part 112,122 contact | abut to an axial direction, the space | interval between each rim member 131,141 does not change with the internal pressure given to tire TA, and tire TA The accuracy of uniformity measurement can be improved.

  Furthermore, a complicated mechanism using a hydraulic cylinder for adjusting the distance between the rim members 131 and 141, or a complicated mechanism for holding the rim members 131 and 141 at a predetermined distance against the internal pressure of the tire. Since it is not necessary to provide a special mechanism, the structure of the tire holding device can be simplified and the durability can be improved.

  Further, when adjusting the distance between the rim members 131 and 141, the rim members 131 and 141 are moved in the axial direction by the moving mechanisms 132 and 142, and the protrusions 131b, 131c, 141b, 141c and the insertion holes are moved. 112a, 112b, 122a, 122b are not engaged with each other in the circumferential direction of each rotating shaft 110, 120, and each rotating shaft 110, 120 is rotated by a predetermined angle by each motor 106, 121c. Since the flange portions 112 and 122 and the rim members 131 and 141 are brought into contact with each other by changing their positions in the circumferential direction, the interval between the rim members 131 and 141 can be easily adjusted regardless of human power. Can do.

  Further, since the rim members 131 and 141 are detachably attached to the rotary shafts 110 and 120, the rim members 131 and 141 are rim members of other sizes according to the sizes in the radial direction and the width direction of the tire TA. It is possible to change to 131,141.

  In addition, the first protrusion 141b is formed to have the same axial length as the first protrusion 131b, and the second protrusion 141c is formed to have the same axial length as the second protrusion 131c. The distance between the rim members 131 and 141 can be adjusted so that the central position between the rim members 141 and 141 does not change in the axial direction. As a result, since the axially central portion of the tire TA held by the rim members 131 and 141 is always located at the same height, there is no need to provide a mechanism for adjusting the height of the measuring means 104, and the tire testing machine The structure can be simplified.

  In the present embodiment, each rim member 131, 141 is provided with two types of axial length projections of the first projection 131b, 141b and the second projection 131c, 141c. The length of the portion in the axial direction can be one type, and can be three or more types.

  In this embodiment, the distance between the rim members 131 and 141 is adjusted by moving the rim members 131 and 141 in the axial direction with respect to the rotary shafts 110 and 120, respectively. However, it is also possible to adjust the distance between the rim members 131 and 141 by moving one of the rim members 131 and 141, for example, only the rim member 131 in the axial direction with respect to the rotating shaft 110. . In this case, the rim member 141 that is not moved can be fixed to the rotating shaft 120.

  In the present embodiment, the rim members 131 and 141 are moved in the axial direction with respect to the rotary shafts 110 and 120 in order to relatively rotate the rim members 131 and 141 and the rotary shafts 110 and 120. In addition, although the rotation shafts 110 and 120 are rotated, the rim members 131 and 141 are moved in the axial direction with respect to the rotation shafts 110 and 120 and the rim members 131 and 141 are moved. It can also be rotated. In addition, the rotary shafts 110 and 120 can be moved in the axial direction with respect to the rim members 131 and 141, and the rotary shafts 110 and 120 can be rotated. Furthermore, the respective rotation shafts 110 and 120 can be moved in the axial direction with respect to the respective rim members 131 and 141, and the respective rim members 131 and 141 can be rotated.

  In this embodiment, columnar protrusions 131b, 131c, 141b, 141c are provided on one end face of each rim member 131, 141, and insertion holes 112a, 112b, 122a, 122b are provided in the flange portions 112, 122, respectively. In FIG. 24, the distance between the rim members 131 and 141 is adjusted. However, as shown in FIG. 24, one end face of each rim member 131 and 141 and each flange portion 112 and 122 have protrusions. It is also possible to provide it.

  That is, a plurality of first protrusions 131d and second protrusions 131e are provided on one end surface of the rim member 131 at intervals in the circumferential direction, and the protrusions 131d and 131e extend in the axial direction of the upper rotary shaft 110. While forming in the column shape of an outer diameter, the 2nd protrusion 131e is formed in the axial direction longer than the 1st protrusion 131d. In addition, the first protrusion 112c and the second protrusion 112d are formed in the flange portion 112 without providing the insertion holes 112a and 112b, and the protrusions 112c and 112d are formed in a columnar shape with the same outer diameter extending in the axial direction. In addition, when the first protrusion 112c and the second protrusion 131e are in contact with each other in the axial direction, the second protrusion 112d and the first protrusion 131d are in contact with each other in the axial direction.

  A plurality of first protrusions 141d and second protrusions 141e are provided on one end surface of the rim member 141 at intervals in the circumferential direction, and the protrusions 141d and 141e have the same outer diameter extending in the axial direction of the rotating shaft 120. And the second protrusion 141e is formed longer in the axial direction than the first protrusion 141d. Further, the flange portion 122 is formed with the first protrusion 122c and the second protrusion 122d without providing the insertion holes 122a and 122b, and the protrusions 122c and 122d are formed in a columnar shape with the same outer diameter extending in the axial direction. In addition, when the first protrusion 122c and the second protrusion 141e are in contact with each other in the axial direction, the second protrusion 122d and the first protrusion 141d are in contact with each other in the axial direction.

  In the above-described configuration, for example, as shown in FIG. 25, the distance between the rim members 131 and 141 is adjusted such that the rim members 131 and 141 and the flange portions 112 and 122 are in contact with each other in the circumferential direction. By changing, the first protrusions 131d and 141d and the first protrusions 112c and 122c are brought into contact with each other in the axial direction. Thereby, the space | interval between each rim member 131,141 can be adjusted, and the space | interval between each rim member 131,141 does not change with the internal pressure of a tire.

  As shown in FIG. 26, the rim members 131 and 141 are inclined not at the cylindrical protrusions 131d, 131e, 141d, and 141e but at a predetermined angle β with respect to the axial directions of the rotary shafts 110 and 120. Protrusions 131f and 141f having surfaces are provided, and the flanges 112 and 122 are not provided with the cylindrical protrusions 112c, 112d, 122c, and 122d, but have a predetermined angle with respect to the axial direction of the rotary shafts 110 and 120. It is also possible to provide protrusions 112e and 122e having inclined surfaces that form β.

  In this case, for example, as shown in FIG. 27, the distance between the rim members 131 and 141 is adjusted by changing the contact positions of the rim members 131 and 141 and the flange portions 112 and 122 in the circumferential direction. The axial contact positions of the protrusions 131f and 141f and the protrusions 112e and 122e are changed. Thereby, the space | interval between each rim member 131,141 can be adjusted, and the space | interval between each rim member 131,141 does not change with the internal pressure of a tire.

1 is a partial cross-sectional schematic front view of a tire testing machine showing a first embodiment of the present invention. Partial cross-sectional front view of tire support Top view of tire support Bottom view of tire support Structural illustration of tire support Top view and partial cross-sectional front view of tire support A plan view and a partial cross-sectional front view of the tire support after changing the axial interval of each rim member Plan view and partial cross-sectional front view of the tire support after further changing the axial interval of each rim member Plan view and partial cross-sectional front view of a tire support portion showing a modification of the spacer ring and the stopper ring Plan view and partial cross-sectional front view of the tire support after the axial spacing of each rim member is changed in the modified spacer ring and stopper ring A plan view and a partial cross-sectional front view of a tire support showing another modification of the spacer ring and the stopper ring A plan view and a partial cross-sectional front view of the tire support after changing the axial interval of each rim member in other modified examples of the spacer ring and the stopper ring A plan view and a partial cross-sectional front view of a tire support portion showing a modification of the moving means of the rim member The top view and partial cross section front view of a tire support part which show the modification of the rotation means of a stopper ring The partial cross section front view of the tire testing machine which shows 2nd Embodiment in this invention A direction arrow view in FIG. B direction arrow view in FIG. CC sectional view in FIG. DD sectional view in FIG. Perspective view of main part of tire holding device Top view and partial cross-sectional front view of tire support Front view of a tire support portion showing a state in which each rim member is moved in the axial direction with respect to each rotation axis A plan view and a partial cross-sectional front view of a tire support portion showing a state after adjusting an axial interval of each rim member Plan view and partial cross-sectional front view of a tire support portion showing a modification of the flange portion and the rim member A plan view and a partial cross-sectional front view of the tire support portion showing a state after changing the axial interval between the rim members in the modification of the flange portion and the rim member. A plan view and a partial cross-sectional front view of a tire support portion showing other modifications of the flange portion and the rim member A plan view and a partial cross-sectional front view of the tire support portion showing a state after changing the axial interval between the rim members in the other modifications of the flange portion and the rim member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tire testing machine main body, 2 ... Base, 3 ... Support | pillar, 4 ... Frame, 5 ... Measuring means, 6 ... Conveyance roller, 10 ... Upper rotating shaft, 11 ... Bearing, 12 ... Flange part, 12a ... Insertion hole, 12b ... insertion hole, 13 ... collet chuck, 14 ... engagement hole, 15 ... discharge hole, 20 ... lower rotating shaft, 21 ... hydraulic cylinder, 21a ... bearing, 22 ... flange, 22a ... insertion hole, 22b ... Insertion hole, 23 ... collet chuck, 24 ... engagement protrusion, 25 ... communication hole, 30 ... upper tire support, 31 ... rim member, 32 ... spacer ring, 32a ... first projection, 32b ... second projection 33 ... Stopper ring, 33a ... Insertion hole, 33b ... Insertion hole, 33e ... Long hole, 33f ... Worm gear, 34 ... Cylinder, 40 ... Lower tire support, 41 ... Rim member, 42 ... Spacer ring, 42 ... 1st protrusion, 42b ... 2nd protrusion, 43 ... Stopper ring, 43a ... Insertion hole, 43b ... Insertion hole, 43e ... Long hole, 43f ... Worm gear, 50 ... Spacer ring, 50a ... 1st protrusion, 50b ... 2nd protrusion, 51 ... Stopper ring, 51a ... 1st protrusion, 51b ... 2nd protrusion, 60 ... Spacer ring, 60a ... Projection, 61 ... Stopper ring, 61a ... Projection, 70 ... Drive device, 71 ... Worm shaft, 72 ... Rail, 100 ... Tire testing machine body, 106 ... Motor, 110 ... Upper rotating shaft, 112 ... Flange, 112a ... Insertion hole, 112b ... Insertion hole, 112c ... First projection, 112d ... second protrusion, 112e ... protrusion, 113 ... collet chuck, 114 ... engagement hole, 120 ... lower rotating shaft, 121c ... motor, 122 ... flange, 122a ... insertion hole, 122 ... insertion hole, 122c ... first protrusion, 122d ... second protrusion, 122e ... protrusion, 130 ... upper tire support, 131 ... rim member, 131b ... first protrusion, 131c ... second protrusion, 131d ... 1st protrusion, 131e ... 2nd protrusion, 131f ... protrusion, 132 ... movement mechanism, 133 ... cylinder, 134 ... support mechanism, 136 ... rail, 137 ... ball screw, 140 ... lower tire support part, 141 ... Rim member, 141b ... first projection, 141c ... second projection, 141d ... first projection, 141e ... second projection, 141f ... projection, 142 ... moving mechanism, 143 ... cylinder, 144 ... support Mechanism, 146 ... rail, 147 ... ball screw, TA ... tire.

Claims (19)

A pair of support shafts arranged opposite to each other in the axial direction, and a pair of rim members attached to opposite ends of each support shaft, respectively, by changing the axial distance of each rim member, In a tire holding device configured to hold a tire of any size in the width direction by a rim member,
One of the rim members is provided so as to be movable in the axial direction with respect to the support shaft, and contact portions are provided on the rim member side and the support shaft side to contact each other in the axial direction at any position in the circumferential direction of the rim member. ,
The tire holding device, wherein the contact portions are formed to contact each other at different positions in the axial direction by changing the contact positions in the circumferential direction. A pair of support shafts arranged opposite to each other in the axial direction, and a pair of rim members attached to opposite ends of each support shaft, respectively, by changing the axial distance of each rim member, In a tire holding device configured to hold a tire of any size in the width direction by a rim member,
The rim members are provided so as to be movable in the axial direction with respect to the support shaft, and contact portions are provided on the rim member side and the support shaft side to contact each other in the axial direction at arbitrary positions in the circumferential direction of the rim member. ,
A tire holding device characterized in that the abutting portion on the rim member side and the abutting portion on the support shaft side are formed so as to abut at different positions in the axial direction by changing the abutting position in the circumferential direction. . The contact portions on the one rim member side and the contact portions on the other rim member side are formed so that the rim members move by an equal distance in the opposite axial direction. Item 2. The tire holding device according to Item 2. The tire according to claim 1, 2 or 3, wherein at least one of the abutting portions on the rim member side and the support shaft side is formed by a plurality of abutting portions having different heights in the axial direction of the rim member. Holding device. The abutting portions on the rim member side and the support shaft side are formed by a pair of abutting rings facing each other in the axial direction,
The contact part of one contact ring is formed by a plurality of contact parts having different heights in the axial direction, and at least a part of the contact part is formed by a protruding part protruding in the axial direction, and the other contact part The ring is provided with at least one insertion hole through which an abutting portion formed by a protrusion of one abutting ring can be inserted in the axial direction,
When each abutment ring is brought into contact with an arbitrary abutment portion of one abutment ring in the axial direction, the abutment portion composed of a protrusion higher than the abutment portion is brought into contact with the other abutment ring. The tire holding device according to claim 1, 2 or 3, wherein the tire holding device is inserted into the insertion hole of the ring. The abutting portions on the rim member side and the support shaft side are formed by a pair of abutting rings facing each other in the axial direction, and each abutting ring is provided with a plurality of abutting portions having different heights in the axial direction,
Each contact ring is configured such that an arbitrary contact portion of one contact ring contacts an arbitrary contact portion of the other contact ring in the axial direction. 3. The tire holding device according to 3. The tire according to claim 1, 2 or 3, wherein at least one of the abutting portions on the rim member side and the support shaft side is formed by an abutting portion that forms an inclined surface with respect to the axial direction of the rim member. Holding device. The abutment portions on the rim member side and the support shaft side are formed by a pair of contact rings facing each other in the axial direction, and contact portions that form an inclined surface with respect to the axial direction of the support shaft on each contact ring. Provided,
Each abutment ring is configured such that the abutment portion at an arbitrary position in the circumferential direction of one abutment ring is in axial contact with the abutment portion at an arbitrary position in the circumferential direction of the other abutment ring. The tire holding device according to claim 1, 2 or 3. The tire holding device according to claim 5, 6 or 8, wherein each of the contact rings is detachably attached to a support shaft. The rotation means which rotates at least one of each said contact ring to the circumferential direction so that the contact position with the other contact ring may change was provided. The claim | item 5, 6, 8, or 9 characterized by the above-mentioned. Tire holding device. The rotating means is formed from a pair of cylinders connected so that the rods are located on both ends, and the rods of the cylinders are connected to the abutment ring and the support shaft side, respectively. The contact ring is configured to rotate at three predetermined circumferential positions in a state in which the rod is extended, a state in which both rods are extended, and a state in which both rods are not extended. Item 15. The tire holding device according to Item 10. The rotating means is composed of a driven gear provided on the outer peripheral surface of the contact ring, a driving gear that meshes with the driven gear, and a motor that rotates the driving gear. The tire holding device according to claim 10. The moving means which moves the said rim member to the axial direction of a tire with respect to a spindle is provided. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12. The tire holding device according to 12. The tire holding device according to claim 13, wherein the moving means is formed by a cylinder that supports the rim member so as to be movable in the axial direction with respect to the support shaft. The abutment portions on the rim member side and the support shaft side are integrally provided on the rim member and the support shaft, respectively.
One abutting portion of the rim member and the support shaft is formed by a plurality of abutting portions having different heights in the axial direction, and at least a part of the abutting portion is formed by a projecting portion protruding in the axial direction. And the other abutting portion of the support shaft is provided with at least one insertion hole through which the abutting portion consisting of one protrusion can be inserted in the axial direction,
When each one of the contact portions of the rim member and the support shaft is in contact with the other contact portion in the axial direction, the contact portion formed by a protrusion higher than the contact portion is the other contact portion. The tire holding device according to claim 1, 2 or 3, wherein the tire holding device is inserted into the insertion hole. The abutment portions on the rim member side and the support shaft side are integrally provided on the rim member and the support shaft, respectively, and the contact portions of the rim member and the support shaft are formed by a plurality of contact portions having different heights in the axial direction. ,
Each contact part is comprised so that one arbitrary contact part of a rim | limb member and a spindle may be contact | abutted to the other arbitrary contact part in the axial direction. Tire holding device. The rim member side and the support shaft side contact portions are provided integrally with the rim member and the support shaft, respectively, and the contact portions of the rim member and the support shaft are inclined with respect to the axial direction of the support shaft. Formed by and
Each contact portion is configured such that a contact portion at one arbitrary position in the circumferential direction of the rim member and the support shaft is axially contacted with a contact portion at any other position in the circumferential direction. The tire holding device according to claim 1, 2 or 3. 18. The tire holding device according to claim 15, further comprising a rotation unit that can relatively rotate the rim member and the support shaft so as to change a contact position in a circumferential direction. 19. The tire according to claim 18, wherein the rotating means includes a moving mechanism capable of moving the rim member in an axial direction with respect to the support shaft, and a rotating mechanism capable of rotating the support shaft by an arbitrary angle. Holding device.

Images