IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0913205
(2006-07-27)
|
등록번호 |
US-7658273
(2010-04-02)
|
우선권정보 |
JP-2005-226199(2005-08-04) |
국제출원번호 |
PCT/JP2006/314833
(2006-07-27)
|
§371/§102 date |
20071031
(20071031)
|
국제공개번호 |
WO07/015408
(2007-02-08)
|
발명자
/ 주소 |
- Nakamura, Jiro
- Hayashi, Nobuhiro
|
출원인 / 주소 |
|
대리인 / 주소 |
St. Onge Steward Johnston & Reens LLC
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
6 |
초록
▼
A carriage-type conveyance device using a carriage having a vertically movable object-supporting base that is controlled by a cam rail on the floor side, in which a turntable for changing the direction of the carriage has a low-floor structure. In the carriage-type conveyance device, the object-supp
A carriage-type conveyance device using a carriage having a vertically movable object-supporting base that is controlled by a cam rail on the floor side, in which a turntable for changing the direction of the carriage has a low-floor structure. In the carriage-type conveyance device, the object-supporting base that is vertically movable between a lowered position and a lifted position is placed on a conveyance carriage (1), a cam follower roller vertically moving in association with the movement of the object-supporting body is provided at the bottom of the conveyance carriage (1), and a cam device (58) for pushing up the cam follower roller and a work section (3A) in which the object support base is supported at the lifted position are provided in a traveling route of the conveyance carriage (1). The conveyance device further has the turntable (7) placed in a traveling route on the downstream side of the work section (3A) and changing the direction of the conveyance carriage (1), and also has a means for holding at the lifted position the object-supporting body of the conveyance carriage (1) from at least the time immediately before the object-supporting body enters into the turntable (7) until it has exited from the rotated turntable (7).
대표청구항
▼
What is claimed is: 1. A conveyance device comprising an object supporting base vertically movable between a lowered position and a lifted position, provided on a conveyance carriage that can travel on a predetermined traveling route; cam follower rollers that move up and down in association with t
What is claimed is: 1. A conveyance device comprising an object supporting base vertically movable between a lowered position and a lifted position, provided on a conveyance carriage that can travel on a predetermined traveling route; cam follower rollers that move up and down in association with the object supporting base, provided at the bottom of the conveyance carriage; and cam rails for pushing up the cam follower rollers and a work section in which the object supporting base is held at the lifted position, provided in the traveling route of the conveyance carriage; and a turntable for changing the direction of the conveyance carriage, disposed in a traveling route on the downstream side of the work section, wherein between the work section and the turntable, a high-speed traveling section in which the carriage is made to travel at a high speed in a state that the object supporting base is lowered to the lowered position, is provided, at a position immediately before the turntable, cam rails for pushing up the cam follower rollers are disposed, and an object supporting base lifted position holding means for holding the object supporting base, which has been lifted to the lifted position by the cam follower rollers and the cam rails, at the lifted position until the conveyance carriage exits from the rotated turntable, is provided. 2. The conveyance device according to claim 1, wherein on the conveyance carriage, a means for locking the object supporting base at the lifted position is provided, at the lowered position to which the object supporting base is lowered in the traveling route, an unlocking means for releasing the locking means is provided, and the object supporting base lifted position holding means is formed by the locking means. 3. The conveyance device according to claim 1, wherein the turntable comprises a pair of left and right guide rails forming a conveyance carriage traveling route on this turntable, an intermediate frame which joins and integrates the guide rails together on their inner sides, a vertical support shaft projectedly provided from the floor side so as to axially support the intermediate frame rotatably, a plurality of supporting rollers which are attached outside the guide rails and roll on support guide surfaces on the floor side, and a motor which drives and rotates at least one of the supporting rollers. 4. The conveyance device according to claim 3, wherein the supporting rollers of the turntable are attached to intermediate positions in the longitudinal direction of the pair of left and right guide rails, to the ends of the pair of the left and right guide rails, other supporting auxiliary rollers are attached, and auxiliary support guide surfaces are provided on the floor side which level the ends of the guide rails via the supporting auxiliary rollers adjacent to the end of the traveling route when the conveyance carriage traveling route on the turntable is connected to the upstream side traveling route or the downstream side traveling route. 5. The conveyance device according to claim 1, wherein on the floor side, a means for loading the conveyance carriage onto the turntable from the upstream side traveling route and a means for unloading the conveyance carriage from the turntable to the downstream side traveling route are provided, each of these conveyance carriage loading means and conveyance carriage unloading means on the floor side comprises a friction drive wheel which comes into pressure contact with one of the left and right side surfaces parallel to the traveling direction provided on the conveyance carriage, and a backup roller which comes into contact with the other side surface, the turntable is driven to rotate forward and reverse in a range between a position at which one end of the conveyance carriage traveling route on this turntable is connected to the upstream side traveling route and a position at which the other end of the conveyance carriage traveling route on this turntable is connected to the downstream side traveling route, the friction drive wheel of the conveyance carriage loading means is disposed on the floor side at the side from which the conveyance carriage loaded onto the turntable moves away according to the rotation of the turntable, the friction drive wheel of the conveyance carriage unloading means is disposed on the floor side at the side which the conveyance carriage on the turntable approaches according to the rotation of the turntable, and the backup rollers of the conveyance carriage loading means and the conveyance carriage unloading means are constructed so as to freely exit from the inside to the outside of the rotation space of the conveyance carriage on the turntable according to the rotation of the turntable. 6. The conveyance device according to claim 5, wherein at the end of the upstream side traveling route to which the conveyance carriage traveling route on the turntable is connected, a normally-closed stopper that freely stands and falls is provided for preventing dropping-off of the conveyance carriage, and a cam means which interlocks with advancing and withdrawing movements of the backup roller of the conveyance carriage loading means is provided, and this cam means switches the normally-closed stopper to an unworking position by interlocking with the withdrawing movement of the backup roller of the conveyance carriage loading means. 7. A conveyance device comprising an object supporting base vertically movable between a lowered position and a lifted position, provided on a conveyance carriage that can travel on a predetermined traveling route; cam follower rollers that move up and down in association with the object supporting base, provided at the bottom of the conveyance carriage; and cam rails for pushing up the cam follower rollers and a work section in which the object supporting base is held at the lifted position, provided in the traveling route of the conveyance carriage, wherein in a traveling route on the downstream side of the work section, a turntable for changing the direction of the conveyance carriage is disposed, an object supporting base lifted position holding means for holding the object supporting base of the conveyance carriage at the lifted position at least from the time immediately before the conveyance carriage enters into the turntable until the conveyance carriage exits from the rotated turntable, is provided; the turntable comprises a pair of left and right guide rails forming a conveyance carriage traveling route on this turntable, an intermediate frame which joins and integrates the guide rails together on their inner sides, a vertical support shaft projectedly provided from the floor side so as to axially support the intermediate frame rotatably, a plurality of supporting rollers which are attached outside the guide rails and roll on support guide surfaces on the floor side, and a motor which drives and rotates at least one of the supporting rollers; the supporting rollers of the turntable are attached to intermediate positions in the longitudinal direction of the pair of left and right guide rails, to the ends of the pair of the left and right guide rails, other supporting auxiliary rollers are attached, and auxiliary support guide surfaces are provided on the floor side which level the ends of the guide rails via the supporting auxiliary rollers adjacent to the end of the traveling route when the conveyance carriage traveling route on the turntable is connected to the upstream side traveling route or the downstream side traveling route. 8. A conveyance device comprising an object supporting base vertically movable between a lowered position and a lifted position, provided on a conveyance carriage that can travel on a predetermined traveling route; cam follower rollers that move up and down in association with the object supporting base, provided at the bottom of the conveyance carriage; and cam rails for pushing up the cam follower rollers and a work section in which the object supporting base is held at the lifted position, provided in the traveling route of the conveyance carriage, wherein in a traveling route on the downstream side of the work section, a turntable for changing the direction of the conveyance carriage is disposed, an object supporting base lifted position holding means for holding the object supporting base of the conveyance carriage at the lifted position at least from the time immediately before the conveyance carriage enters into the turntable until the conveyance carriage exits from the rotated turntable, is provided on the floor side, a means for loading the conveyance carriage onto the turntable from the upstream side traveling route and a means for unloading the conveyance carriage from the turntable to the downstream side traveling route are provided, each of these conveyance carriage loading means and conveyance carriage unloading means on the floor side comprises a friction drive wheel which comes into pressure contact with one of the left and right side surfaces parallel to the traveling direction provided on the conveyance carriage, and a backup roller which comes into contact with the other side surface, the turntable is driven to rotate forward and reverse in a range between a position at which one end of the conveyance carriage traveling route on this turntable is connected to the upstream side traveling route and a position at which the other end of the conveyance carriage traveling route on this turntable is connected to the downstream side traveling route, the friction drive wheel of the conveyance carriage loading means is disposed on the floor side at the side from which the conveyance carriage loaded onto the turntable moves away according to the rotation of the turntable, the friction drive wheel of the conveyance carriage unloading means is disposed on the floor side at the side which the conveyance carriage on the turntable approaches according to the rotation of the turntable, and the backup rollers of the conveyance carriage loading means and the conveyance carriage unloading means are constructed so as to freely exit from the inside to the outside of the rotation space of the conveyance carriage on the turntable according to the rotation of the turntable. 9. The conveyance device according to claim 8, wherein at the end of the upstream side traveling route to which the conveyance carriage traveling route on the turntable is connected, a normally-closed stopper that freely stands and falls is provided for preventing dropping-off of the conveyance carriage, and a cam means which interlocks with advancing and withdrawing movements of the backup roller of the conveyance carriage loading means is provided, and this cam means switches the normally-closed stopper to an unworking position by interlocking with the withdrawing movement of the backup roller of the conveyance carriage loading means.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.