66results about How to "Guarantee direction" patented technology

The invention discloses an automatic roller blind device for agricultural greenhouses, which relates to the technical field of agricultural equipment, and mainly solves the problem that when laying straw curtains on agricultural greenhouses, because the straw curtains are relatively soft, the two ends of the curtains are laid unevenly during laying. There is a large gap, which affects the heat preservation of the agricultural greenhouse. This device mainly includes the agricultural greenhouse body. One side of the agricultural greenhouse body is equipped with a limit mechanism, a rainproof mechanism, an indicating mechanism, a controller, an automatic roller shutter mechanism, and a gap covering The mechanism drives the rotating shaft to rotate through the deceleration motor, and stretches the roller blind shaft to move through the transmission belt, which is convenient for laying and rolling up the covering straw. When the roller blind shaft moves, the roller blind shaft can be oriented through the arc slide , to ensure the flatness of both sides of the covering grass curtain, and the supplementary grass curtain on the rotating shaft can also be pulled to move, and it is laid between the gaps covering the grass curtain. The beneficial effect of the invention is that the laid straw curtains are smoother, more comprehensively laid, and have better thermal insulation effect.

The invention belongs to the technical field of bearing machining, and discloses a bearing ring inclined oil hole machining tool. The bearing ring inclined oil hole machining tool comprises a rack, a step hole is formed in a table top of the rack, the table top of the rack is an electromagnetic chuck, and a rotating mechanism and a drilling mechanism are arranged above and below the table top of the rack; the rotating mechanism comprises a first rotary disc and a second rotary disc which are rotationally connected to the rack, rotating centers of the first rotary disc and the second rotary disc are coincident with a center shaft of the step hole, a first through hole is formed in the first rotary disc, a second through hole is formed in the second rotary disc, and the turning radius of the first through hole is larger than the turning radius of the second through hole; the drilling mechanism comprises a rotating rod and electric drills, the two electric drills are staggered in the circumferential direction of a bearing ring, and the sum of the drilling depths of the two electric drills is equal to the depth of a bearing ring inclined oil hole; and the rack is further provided with a rotating parking mechanism which comprises a plurality of microswitches and trigger blocks. When the bearing ring inclined oil hole machining tool is used for machining the bearing ring inclined oil hole, positioning is accurate, and the machining difficulty is small.