Abstract: Provided is a rim exchange apparatus of a tire testing machine having a simple and space-saving configuration and capable of rotating a turntable having a plurality of rim placing parts with no interference and appropriately identifying a plurality of rim assemblies set on the turntable. A turntable is installed to be rotated about a rotary shaft with respect to the support part, a plurality of rim placing parts on which a rim assembly is placed are provided to the turntable about the rotary shaft, and reading parts are attached to the support part at a lower side of the turntable. Then, the reading parts read rim identification information of the rim assembly placed on the rim placing parts through the turntable at a predetermined reading position. Accordingly, the identification information of the rim assembly can be appropriately read with no interference with rotation of the turntable.

Abstract: A rim assembly includes a first rim on which a first reference surface is formed, a second rim on which a second reference surface is formed, a through-hole that extends to intersect the first reference surface of the first rim and into which an inserting part is inserted, pins erected on one of the first and second reference surfaces, protruding portions formed on the other of the first and second reference surfaces, first supporting members provided for the first reference surface, and second supporting members provided for the second reference surface. Groove portions with which the protruding portions are engaged are formed around the outer peripheral surfaces of the pins. The first and second supporting members come into contact with each other when the protruding portions are separated from the groove portions, and are separated from each other when the protruding portions are engaged to the groove portions.

Abstract: A tire vulcanizer and tire vulcanizing system improving production efficiency by shortening time for loading and unloading of tires are provided. They include: a lower mold supporting part; an upper mold supporting part; a moving device moving the upper mold supporting part horizontally; an elevator device moving the upper mold vertically; a lift device pushing up a vulcanized tire held in the lower mold; and a tire supporting part supported by the upper mold supporting part. The tire supporting part moves between a supporting position and a retreated position. The bottom side of the vulcanized tire is supported by the tire supporting part at a peripheral side closer to the outside than a pushed-up position in the supporting position. The retreated position is positioned at a peripheral side closer to the outside than the vulcanized tire.

Abstract: What is provided is a tire vulcanizer, in which the stress force during engagement of the teeth can be reduced and teeth damage can be suppressed, allowing down-sizing, light-weighting, and simplifying at the same time. It includes: an upper mold attaching part (21) to which an upper mold is attached; a lower mold attachment part to which a lower mold pressed on the upper mold is attached; a supporting part (5) that supports the upper mold attaching part (21) and the lower mold attaching part; a fixed side rack (6) having first teeth (6a) arranged in a height direction and provided to the supporting part (5); a movable-side rack (7) having second teeth (7a) engaging with the first teeth and provided to the upper mold attaching part (21); and a tilting restriction part (40) restricting tilt of the movable-side rack (7) derived from the height direction.

Abstract: Provided is a pressure vessel having a weld portion structure of a plate material in which a plate receiving a pressure or a load is attached by welding to a wall surface member such as a shell or a head. In the pressure vessel, a stress concentration on the weld portion structure is alleviated and an increase in welding amount and plate thickness of the wall surface member are suppressed. The pressure vessel includes a weld structure portion in which an end of a bolster plate (22) attached so as to partition an inside of a container body and receiving a pressure or a load is attached by welding to a wall surface member (30) of the container body, the weld structure portion having at least two sections including a weld portion (40), i.e., shape displacement points of the weld portion (40) and a stepped portion (50).

Abstract: A tire vulcanizer includes: a support structure (13) which includes a platen portion (14); a guide member (31) which includes a flanged portion (33) in an end portion thereof so as to cause the flanged portion (33) to be detachably supported by a peripheral edge portion of a through-hole (25) formed in the platen portion (14); and a bag head (37) which is slidably inserted into the guide member (31). The bag head (37) includes a restriction member (70) which abuts on the guide member (31) and restricts displacement of the bag head (37) in an insertion direction in a case where the bag head (37) is inserted to a predetermined position set in advance with respect to the guide member (31). The restriction monitor (70) is detachable mounted on an outer peripheral surface of the bag head (37) to protrude outward from the outer peripheral surface.

Abstract: A tire holding apparatus which holds a tire using an annular rim that is detachably mounted, includes: a body section having a support surface which supports the rim; an inflation gas supply portion which has an inflation flow passage that passes from an inner portion of the body section to a center portion of the rim and supplies inflation gas into a tire supported by the rim; and a clamping portion which is mounted on the body section and clamps the rim to the support surface of the body section by using pressure of the inflation gas that flows through the inflation flow passage as a drive force.

Abstract: Provided is a tire vulcanizer capable of adjusting the height of an upper mold attaching member or a lower mold attaching member while fixing the position of the upper mold attaching member or the lower mold attaching member, with a simple structure. A tire vulcanizer (2) includes: a guide frame (5) that supports an upper mold attaching member (21) and a base frame (26); a fixed rack (6) that is provided to the guide frame (5) along the height direction of a mold (23) and includes a plurality of teeth, the mold (23) including an upper mold (4) placed in the upper mold attaching member (21) and a lower mold (35) placed in the base frame (26); a movable rack (7) that is provided to the upper mold attaching member (21), meshes with the fixed rack (6), and includes a plurality of teeth; and an air cylinder that moves the movable rack (7) in the height direction of the mold (23) with respect to the upper mold attaching member (21) while keeping the height of the upper mold attaching member (21) constant.

Abstract: A tire vulcanizer and tire vulcanizing system improving production efficiency by shortening time for loading and unloading of tires are provided. They include: a lower mold supporting part; an upper mold supporting part; a moving device moving the upper mold supporting part horizontally; an elevator device moving the upper mold vertically; a lift device pushing up a vulcanized tire held in the lower mold; and a tire supporting part supported by the upper mold supporting part. The tire supporting part moves between a supporting position and a retreated position. The bottom side of the vulcanized tire is supported by the tire supporting part at a peripheral side closer to the outside than a pushed-up position in the supporting position. The retreated position is positioned at a peripheral side closer to the outside than the vulcanized tire.

Abstract: To provide a rim assembly to which even a small tire can be mounted, a tire testing machine, and a rim assembly replacement method. The rim assembly having an upper rim and a lower rim in a pair to which a tire to be tested is mounted, includes: a pin provided on the lower rim; a pin receiving portion that is provided on the upper rim and engageable with the pin; and a groove portion having a recessed groove with a recessed section that can house at least a part of a tip of the pin, formed in a surface of the upper rim on a side of the lower rim.

Abstract: A tire testing apparatus allows attachment and detachment of a rim assembly in which first and second rims are integrated and performs testing of a tire attached to the rim assembly. The tire testing apparatus includes a first attaching part; a second attaching part; a rotating part that rotates the first attaching part around a reference axis orthogonal to the first reference surface of the first rim attached to the first attaching part; a fixing part that fixes the first attaching part and the second attaching part to each other and is capable of releasing the fixation; an attaching portion moving part that adjusts the distance in a direction along the reference axis between the first attaching part and the second attaching part; and a rotation regulating part that regulates rotation of the second attaching part around the reference axis.

Abstract: What is provided is a tire vulcanizer, in which the stress force during engagement of the teeth can be reduced and teeth damage can be suppressed, allowing down-sizing, light-weighting, and simplifying at the same time. It includes: an upper mold attaching part (21) to which an upper mold is attached; a lower mold attachment part to which a lower mold pressed on the upper mold is attached; a supporting part (5) that supports the upper mold attaching part (21) and the lower mold attaching part; a fixed side rack (6) having first teeth (6a) arranged in a height direction and provided to the supporting part (5); a movable-side rack (7) having second teeth (7a) engaging with the first teeth and provided to the upper mold attaching part (21); and a tilting restriction part (40) restricting tilt of the movable-side rack (7) derived from the height direction.

Abstract: Provided is a pressure vessel having a weld portion structure of a plate material in which a plate receiving a pressure or a load is attached by welding to a wall surface member such as a shell or a head. In the pressure vessel, a stress concentration on the weld portion structure is alleviated and an increase in welding amount and plate thickness of the wall surface member are suppressed. The pressure vessel includes a weld structure portion in which an end of a bolster plate (22) attached so as to partition an inside of a container body and receiving a pressure or a load is attached by welding to a wall surface member (30) of the container body, the weld structure portion having at least two sections including a weld portion (40), i.e., shape displacement points of the weld portion (40) and a stepped portion (50).

Abstract: Provided is a tire vulcanizer capable of adjusting the height of an upper mold attaching member or a lower mold attaching member while fixing the position of the upper mold attaching member or the lower mold attaching member, with a simple structure. A tire vulcanizer (2) includes: a guide frame (5) that supports an upper mold attaching member (21) and a base frame (26); a fixed rack (6) that is provided to the guide frame (5) along the height direction of a mold (23) and includes a plurality of teeth, the mold (23) including an upper mold (4) placed in the upper mold attaching member (21) and a lower mold (35) placed in the base frame (26); a movable rack (7) that is provided to the upper mold attaching member (21), meshes with the fixed rack (6), and includes a plurality of teeth; and an air cylinder that moves the movable rack (7) in the height direction of the mold (23) with respect to the upper mold attaching member (21) while keeping the height of the upper mold attaching member (21) constant.