30results about How to "Realize the centering function" patented technology

A centering mechanism comprises a guide device fixed on two supports transversely. Carrier rollers are mounted on the guide device, two shaft ends of each carrier roller are fixed on the guide device, a pair of centering blocks reciprocating along the guide device is arranged in the guide device, threaded sleeves and lead screws fixed on the centering blocks constitute a threaded pair, two ends of the lead screws are supported by bearing blocks, a driving device driving the lead screws is arranged at one end of the bearing blocks, and the bearing blocks and the driving device are fixed on the supports. The driving device transmits motion to the centering blocks by the threaded pair by driving the lead screws to rotate, centered workpieces are pushed to move along the guide device by the centering blocks on two sides, and centering of the centering mechanism is realized. The centering mechanism has the advantages of simple structure, high practicality and easy implement.

The invention relates to a device for assembling a spiral check ring for a hole. The device comprises a pressure head and a guide cone. The pressure head is in a T shape, and the lower portion of the pressure head is conical; and the guide cone is annular, and the inside of the guide cone is in a cone shape matched with the cone shape of the pressure head. A guide pin extending downwards is arranged on the pressure head, and the guide pin can penetrate a hole in the guide cone and enables the pressure head to perpendicularly move. A step is arranged at the lower portion of the guide cone, and the step is in clearance fit with a shaft inner hole of the to-be-installed spiral check ring and extends to the installing position of the spiral check ring. The device has the beneficial effects of being simple in structure, convenient to use and the like, and the assembling efficiency can be greatly improved.

The invention relates to the technical field of oil and natural gas drilling, in particular to a tube tool centering device. The tube tool centering device comprises a foundation support fixedly connected with a mounting foundation, drive oil cylinders movably connected with the foundation support through support lugs on the foundation support, a transition bracket movably connected with the drive oil cylinders and the foundation support and centering plates movably connected with the foundation support and the transition bracket respectively. The tube tool centering device is simple in structure, small in size and high in centering accuracy.

The invention provides a big-tonnage rock engineering power disaster simulation experiment system, and relates to equipment for performing experiments on big-tonnage rock. The equipment comprises a fixed base, a first base, an annular framework and a second base, wherein an upper and lower loading cylinder and a left and right loading cylinder are connected in the annular framework; a front and back loading cylinder is connected onto one side surface of the second base; each of the upper and lower loading cylinder, the left and right loading cylinder and the front and back loading cylinder comprises a static loading cylinder tube, a movable loading cylinder tube, a static loading piston rod and a movable loading piston rod; a movable loading cylinder tube installing cavity and a static loading rodless cavity are arranged in the static loading cylinder tube; the movable loading cylinder tube is arranged in a movable cylinder tube installing cavity; the static loading piston rod is arranged in the static loading rodless cavity; one end of the movable loading piston rod is provided with a movable loading piston; the movable loading piston is arranged in the movable loading cylinder tube; the other end of the movable loading piston rod penetrates through a press cover of the movable loading cylinder tube and the static loading piston rod, and is then connected with a replaceable punching head; one end, extending out of the static loading cylinder tube, of the static loading piston rod is provided with a fixing flange and a loading block. The static loading and the movable loading can be realized; the static loading and the movable loading can be also performed at the same time.

The invention relates to a clamping centering device for shafts. The clamping centering device for shafts comprises a base, a rotating ring, lock blocks, connecting bars, a pneumatic telescopic bar, and a rotating rocker. An outer fixing ring and an inner fixing ring are arranged on the base; the center of the inner fixing ring is provided with a shaft round through hole; a circular groove is arranged between the outer fixing ring and the inner fixing ring. The rotating ring is mounted in the circular groove through press plates evenly distributed. The lock blocks around a shaft are evenly distributed on the outer end face of the inner fixing ring. One end of the rotating rocker is fixed on the outer end face of the rotating ring through a bolt; the other end of the rotating rocker is connected with the pneumatic telescopic bar; the pneumatic telescopic bar drives the rotating rocker and the rotating ring to rotate by extending or shortening, so that the lock blocks are driven to move in or out through the connecting bars so as to lock or loosen the shaft, and the shaft is centered and clamped. The clamping centering device for shafts is simple in structure, convenient to operate and adjustable in clamping size, and can operate reliably.

The invention relates to an aligning propeller bearing device applied to the tail end of a ship. The aligning propeller bearing device comprises a bearing seat and a propeller bearing arranged in an inner cavity of the bearing seat, and is characterized in that an aligning support sleeve is arranged between an inner cavity hole seat of the bearing seat and the propeller bearing; the aligning support sleeve comprises an inner support sleeve of which the periphery is provided with a spherical surface, and an outer support sleeve of which the inner hole is provided with a corresponding sphere seat; the inner support sleeve is sleeved in the inner hole of the outer support sleeve; and the peripheral spherical surface of the inner support sleeve is matched with the sphere seat of the outer support sleeve. Due to the adoption of the aligning propeller bearing device, the propeller bearing can be adjusted finely by swinging in any direction, the function of automatically aligning along with a shaft condition is realized, the propeller bearing is in uniform contact with a tail shaft along the axis direction, the service performance of the propeller bearing is improved, the abrasion can be reduced, the service life of the bearing is prolonged, the generation of noise is reduced and avoided, and convenience is brought to the installation of the tail shaft and the propeller bearing. Lubricating grease for a ship is injected through a lubricating oil pipeline, so that lubrication and rust prevention of the aligning support sleeve are realized, and the aligning function of the aligning support sleeve is ensured.

The invention provides an auxiliary positioning mechanism of a taping machine. The auxiliary positioning mechanism comprises a track and at least two groups of adjusting wheels arranged outside a packaging channel of the taping machine, wherein the track is horizontally arranged and is fixed at the side of the packaging channel; the adjusting wheels are arranged on the track in a sliding manner and can be fixed on the track; and shafts of the adjusting wheels are arranged along the vertical direction. When the auxiliary positioning mechanism is used, one side of an annular coil can pass through the packaging channel and then is limited by two paper wheels and the other side of the annular coil is clamped by two groups of adjusting wheels; and the positions of the two groups of adjusting wheels are adjusted to adapt to the annular coils with different diameters and then the adjusting wheels are fixed, so that taping of the annular coil can be carried out.