4results about How to "Prevent arbitrary rotation" patented technology

The utility model discloses sampling equipment for deep geological survey, which comprises a support frame and an electric telescopic rod, one end of the support frame is fixedly connected with a connecting seat, one end of the connecting seat is fixedly connected with a first motor, the tail end of a main shaft of the first motor is fixedly connected with a screw rod, and the screw rod is rotatably connected with the connecting seat; a fixing frame is fixedly connected to the tail end of a main shaft of the second motor, a threaded barrel is fixedly connected to the inner side of the bottom end of the fixing frame, a connecting drill rod is spirally connected to the inner side of the threaded barrel, and after the sampling drill rod moves to the designated depth, a plug retracts to the inner side of the sampling drill rod, and then the sampling drill rod moves downwards; according to the soil sampling device, soil enters the inner side of the sampling drill rod, so that the soil at the specified depth is sampled through the sampling drill rod, direct sampling can be ensured after the sampling drill rod drills to the specified depth, the connecting drill rod and the sampling drill rod do not need to be taken out from a hole and replaced with a special sampling rod group, and the overall working efficiency is improved.

The utility model relates to the technical field of belt pulley processing, and discloses a work fixture for processing a belt pulley, which solves the problem that the belt pulley is instably clamped at present, and comprises a base, a rotating mechanism is arranged at the top of the base, a clamping mechanism is arranged on the rotating mechanism, and the clamping mechanism is arranged on the base. The clamping mechanism comprises a placing disc located over the base, a top block is fixedly installed at the top of the placing disc, and cross rods are fixedly connected to the outer side of the top block at equal angles; according to the belt pulley clamping device, through the cooperation between the screw rod and the threaded sleeve and the cooperation between the guide rod and the driving rod, all the sleeve plates can move conveniently, all the extrusion pads can be tightly attached to the inner wall of the belt pulley, the belt pulley can be clamped conveniently, and through the cooperation between the connecting rod and the movable rod and the cooperation between the bottom ring and the spring, the belt pulley can be clamped conveniently. And the two inserting rods can be inserted into the two inserting holes correspondingly, then the rotating disc can be fixed, the screw rod is prevented from rotating at will, and therefore the belt wheel is fixed more stably.

The utility model provides a clamping fixture of an oil rolling tappet, which relates to the field of machining, and comprises an enclosure frame and at least one positioning component used for positioning oil rolling tappet parts, a first placing seat and a second placing seat which are oppositely arranged are arranged in the enclosure frame, a plurality of first placing holes are arranged in the first placing seat, and a plurality of second placing holes are arranged in the second placing seat. A second placing hole corresponding to the first placing hole is formed in the second placing seat; each positioning assembly comprises a positioning chuck used for clamping the oil rolling tappet part, a collet matched with the positioning chuck and a pusher used for pushing the oil rolling tappet part into the positioning chuck to be clamped, the collet is placed in the first placing hole, the positioning chuck is located in the collet, and the pusher is placed in the second placing hole. Compared with the prior art, according to the clamping fixture for the oil rolling tappet, the positioning chuck is matched with the collet to clamp the oil rolling tappet parts, the multiple oil rolling tappet parts can be clamped at the same time, the oil rolling tappet parts to be machined are prevented from rotating and falling off at will, the structure is simple, clamping is convenient, and the production and machining efficiency is improved.

The utility model discloses a kind of anti-explosion helmet with mirror surface cleaning function, including glass cover, the inside fixed connection of glass cover both sides has connecting shaft, the outside rotation connection of connecting shaft has rotating ring, the inside of rotating ring is equipped with three groups of push groove, the inside sliding connection of push groove has push piece, the lower part fixed connection of push piece has sliding rod, first spring is fixedly connected between push piece and push groove inner wall, the first spring is sleeved on the outside of sliding rod, the lower part fixed connection of sliding rod in middle side has scraper, the upper part both sides fixed connection of scraper has two groups of inner rotary block, the both sides rotation connection of inner rotary block has outer rotary piece, the lower part both sides fixed connection of outer rotary piece and sliding rod, can be cleaned to the outer surface of anti-explosion helmet glass, prevent dirty adhesion and affect sight.