摘要:
The present invention pertains to an open-end flat belt (10) which is secured by joints (31, 41). The flat belt (10) comprises a plurality of protruding sections (13) which are formed on both end sections (11, 12) of at least one surface of the flat belt (10) and engage with a plurality of recessed sections (33, 43) formed in the joints (31, 41).
摘要:
A positioning arm (1) comprises in its interior two continuous extension shafts (2) at the ends of which guide rollers (3) are mounted which accommodate a toothed belt (6) each. Said toothed belt is guided across deflection rollers (4) in the end sections of the trajectory of the positioning arm (1). At its free ends the toothed belt is fixated on a chassis (7) of the means. The inventive means effect a pulley-type reduction of the motive forces while providing an increased positioning precision.
摘要:
Coupling an end of a flexible force transmitting member (26) to a stationary member (11) is achieved by a biasing arrangement (54) consisting of a snubbing device (52) and a spring (50). The arrangement (54) functions to permit the flexible force transmitting member (26) attached to it to undergo a significant amount of movement (due to the force exerted by the spring) at very slow rates but prevents the flexible force transmitting member from undergoing substantial movement at high rates attendant with high frequencies of motion. A preferred form of the snubbing device (52) is a dashpot.
摘要:
A fluid control barrier (70) for a pipe (74) including a bi-foldable barrier member (82, 84, 86) for controlling movement of fluid along the pipe and having a pair of plates (82, 84) with a hinge (86) along their straight edges to allow for opening and closing of said fluid control barrier; and an actuation mechanism including a threaded screw member (122) having a first thread (128) and a second thread (130); a pair of threaded journals (138, 140); a first pair of struts (142, 146) and another pair of struts (144, 148); the pair of plates including a first plate (82) and a second plate (84); the first thread opposing the second thread; the pair of threaded journals including a first threaded journal (138) threadingly engaged with the first thread and constrained from rotating;and a second threaded journal (140) threadingly engaged with the second thread and constrained from rotating; the first pair of struts connecting the threaded journals to the first plate, and the second pair of struts connecting the threaded journals to the second plate, such that rotating the threaded screw member opens and closes the bi-foldable barrier member.
摘要:
A positioning arm (1) comprises in its interior two continuous extension shafts (2) at the ends of which guide rollers (3) are mounted which accommodate a toothed belt (6) each. Said toothed belt is guided across deflection rollers (4) in the end sections of the trajectory of the positioning arm (1). At its free ends the toothed belt is fixated on a chassis (7) of the means. The inventive means effect a pulley-type reduction of the motive forces while providing an increased positioning precision.
摘要:
A fluid control barrier (70) for a pipe (74) including a bi-foldable barrier member (82, 84, 86) for controlling movement of fluid along the pipe and having a pair of plates (82, 84) with a hinge (86) along their straight edges to allow for opening and closing of said fluid control barrier; and an actuation mechanism including a threaded screw member (122) having a first thread (128) and a second thread (130); a pair of threaded journals (138, 140); a first pair of struts (142, 146) and another pair of struts (144, 148); the pair of plates including a first plate (82) and a second plate (84); the first thread opposing the second thread; the pair of threaded journals including a first threaded journal (138) threadingly engaged with the first thread and constrained from rotating;and a second threaded journal (140) threadingly engaged with the second thread and constrained from rotating; the first pair of struts connecting the threaded journals to the first plate, and the second pair of struts connecting the threaded journals to the second plate, such that rotating the threaded screw member opens and closes the bi-foldable barrier member.
摘要:
The equalizing mechanism includes: timing belts 5a and 5b laid in parallel to the rails for moving 2a and 2b on a base 1; timing pulleys 6a and 6b engaged with the timing belts 5a and 5b; timing pulleys for interlocking 8a and 8b mounted on shafts 7a and 7b of the timing pulleys 6a and 6b; and a timing belt for interlocking 9 racked between the timing pulleys for interlocking 8a and 8b, whereby, when the movable beam 4 on the rails for moving 2a and 2b is driven, a driving force given by the rotation between the timing belt 5a and the timing pulley 6a on one side is equalized to be transmitted to the timing belt 5b and the timing pulley 6b on the other side through the timing pulley for interlocking 8a, the timing belt for interlocking 9 and the timing pulley for interlocking 8b.