| 摘要 |
The present invention relates to a brake arrangement in linear motion operating devices of the kind which comprise a cylinder (1), a piston which is movable in the cylinder, and a rail (3) which is mounted on the outside of the cylinder (1), parallel with the cylinder axis, and which extends substantially along the whole stroke path of the piston. The rail is configured with slide surfaces (8) on opposite sides thereof, and the arrangement further comprises a slide (14) which is configured with slide shoes (15) and which is guided for linear movement along the slide by the slide surfaces (8), this slide being connected to a dogging element (2) connected to the piston. The arrangement is characterized in that the rail has formed therein at least one cavity (9) which extends along the rail (3) and which is open through the intermediary of a passageway (10), whereby the rail presents at least one leg (11) which is resilient in a direction transversely to the cylinder axis and which defines one side of the passageway, and which leg is intended to coact with a brake body (21) mounted on the slide (14) and having a brake surface (22). The cavity can be placed under pressure so as move this one side of the leg out of coaction with the brake surface. |
