12 results about "Screw retained" patented technology

The utility model relates to the technical field of corrugated pipe production, and provides an expansion corrugated pipe end shaping device which comprises a supporting leg, the top of the supporting leg is fixedly connected with a supporting plate through a screw, the top of the supporting plate is fixedly connected with a mounting frame through a screw, and a lower fixing plate and an upper fixing plate are assembled in the mounting frame in a sliding mode. A detachable positioning plate is mounted at the top of the mounting frame, a fixing air cylinder is mounted at the top of the positioning plate, the upper fixing plate is detachably mounted at the output end of the fixing air cylinder, and the proper upper fixing plate and the proper lower fixing plate are selected according to the size of a corrugated pipe through arrangement of the structures such as the upper fixing plate and the lower fixing plate. And the position of the vertical plate is adjusted to adapt to corrugated pipes of different lengths, and the applicability and flexibility of the device are enhanced.

The utility model discloses a nodular cast iron pipe fitting elbow joint suitable for complex terrains, which comprises an elbow joint, a pipeline, locking rings and a connecting ring, two ends of the elbow joint are respectively connected with the pipeline through the locking rings, and the locking rings are fixed on the elbow joint through mounting sleeves and locking screws. The connecting ring is connected with the connecting rod in a hanging mode through the hanging groove and matched with the connecting sleeve on the pipeline in a clamped mode, and the connecting rod tensions the connecting ring and the locking ring through the adjusting sleeve and the nut so as to achieve rapid locking. The limiting groove is clamped with a clamping rib on the outer side of the connecting sleeve to limit rotation of the connecting ring, a check ring is arranged on the outer side of the connecting sleeve and used for limiting longitudinal sliding of the connecting ring, the two ends of the bent connector are in sealing fit with a sealing ring through clamping rings to improve the sealing performance, and a reinforced fiber layer is embedded in the sealing ring to enhance the pressure resistance. The bent connector is simple in structure and convenient to install, can achieve rapid locking and efficient sealing of the bent connector and a pipeline, meets the use requirements under the complex terrain environment, and solves the problems that a traditional pipe fitting is loose in connection and poor in sealing performance.

A ball screw comprises a screw rod, balls, ball sleeves and an outer sleeve, and is characterized in that the two ball sleeves are the first ball sleeve and the second ball sleeve respectively, the balls are divided into two sets and are the first set of balls and the second set of balls respectively, the first set of balls are arranged between the screw rod and the first ball sleeve, and the second set of balls are arranged between the screw rod and the second ball sleeve respectively. The second set of balls are arranged between the lead screw and the second ball sleeve, the outer sleeve and the first ball sleeve are fixed through a screw, and a gap eliminating device of the ball screw is arranged between the outer sleeve and the second ball sleeve. The second ball sleeve can be spirally pulled or pushed through the adjusting screws on the gap eliminating device, so that relative acting force is generated between the first ball sleeve and the second ball sleeve, and the two sets of balls are always attached to the lead screw and the ball sleeves in the opposite directions; and the clearance generated by friction of the ball screw can be compensated at any time, so that the clearance of the ball screw is thoroughly eliminated.

The utility model relates to the technical field of implant processing, in particular to an implant processing jig which comprises a bottom plate, the upper side of the bottom plate is fixedly connected with a mounting plate through screws, an implant processing jig body is fixedly arranged on the upper side of the mounting plate, three displacement clamping blocks used for clamping an implant are fixedly arranged in the implant processing jig body, and the displacement clamping blocks are fixedly connected with the mounting plate through screws. According to the utility model, the two elastic sucker telescopic columns are compressed downwards until the sucker telescopic columns are adsorbed on a table top, and then the implant processing jig can be fixed by utilizing the U-shaped seat and the disc, so that the stability of an implant during processing is ensured, and the jig is prevented from easily sliding from a high position to be broken; an implant can be more tightly attached and positioned through the rubber blocks at the three positioning sliding seats, the stability of the implant during clamping is ensured, meanwhile, the implant which accidentally slides down can be collected through the elastic buffer table, the rubber pad can effectively buffer the implant, and the implant is prevented from directly falling off from a high position.

The utility model relates to a support system which comprises a base, a rotating device, a clamping device and a fixing piece, a mounting groove is formed in one side of the base and extends in the base in the horizontal direction, the lower end of the rotating device extends into the mounting groove from one side of the base, and the rotating device is installed in the vertical direction. The other end of the rotating device extends out of the mounting groove and is connected with the clamping device; the rotating device and the base are provided with mounting holes matched in the vertical direction, and the fixing pieces are inserted into the mounting holes of the base and the rotating device. The mounting groove is formed in the base, the rotating device in the support system is inserted into the mounting groove in the horizontal direction, then the fixing piece is used for fixing the rotating device to the base in the vertical direction, limiting of the rotating device can be achieved, the mounting process is simple, screw fixing is replaced, and the mounting effect is good.

A fastener structure comprises a fastener body, a fastener ring, a son nail, a mother nail, a functional part and a first fixing part, the fastener body and the fastener ring are connected into a whole through the first fixing part, the functional part and the fastener ring are connected into a whole through the mother nail and the son nail, two connecting arms are arranged on the fastener ring, the functional part is provided with a fixing head, a clamping groove is formed in the son nail, and the fastener ring is provided with a clamping groove. During assembly, the primary nail penetrates through the fixing head of the functional part, the fixing head provided with the primary nail extends into the position between the two connecting arms of the buckle ring, the secondary nail penetrates through the connecting arms of the buckle ring and the primary nail at the same time, and the barb of the primary nail is clamped in the clamping groove of the secondary nail. During installation, a screw fixing or riveting mode is not needed, so that the assembly efficiency is effectively improved, the reject ratio is reduced, the appearance quality of products is improved, and the practicability is high.

The present application relates to an abutment system (12) and its use. The abutment system (12) comprises: a soft tissue level abutment part (10) adapted to be attached to a bone level dental implant (40) by means of an abutment screw (56), wherein the abutment system is adapted to selectively support both a cement-retained final restoration (66) and a screw-retained prosthetic component (68; 70). The present application also relates to dental methods.

The utility model discloses an abutment for dental implant restoration, which comprises a fixing screw, an abutment main body is fixedly mounted on the upper surface of the fixing screw, the abutment main body is fixedly connected to the upper surface of the fixing screw through a locking screw, and an artificial tooth is fixedly adhered to the outer surface of the abutment main body. Sliding grooves are formed in the surface of the inner side of the base table body and distributed in the surface of the inner end of one side of the base table body, springs and clamping blocks are arranged on the surfaces of the inner sides of the sliding grooves of the base table body, triangular clamping protrusions are arranged on the surfaces of the outer ends of the clamping blocks, and triangular clamping grooves are formed in the outer surfaces of the locking screws. The outer surfaces of the triangular clamping protrusions at the outer ends of the clamping blocks are clamped to the surfaces of the inner sides of the triangular clamping grooves of the locking screws, the locking screws are adopted for fixing the column base body, installation is tight and firm, meanwhile, the clamping mechanisms are arranged on the inner side, the locking screws are clamped and positioned, twisting and loosening are prevented, and installation is firm.