7results about How to "Reduce axial load" patented technology

The utility model relates to an impeller, a compressor and electrical equipment, the impeller comprises a hub and a channel assembly, the channel assembly is arranged on the periphery of the hub in a surrounding mode, the channel assembly comprises a wheel cover and a wheel disc which are oppositely arranged, an air inlet channel is formed between the wheel cover and the hub, and an air outlet channel is formed between the wheel cover and the wheel disc; a preset gap exists between the side, back on to the air inlet channel, of the hub and the wheel disc and is used for forming an air supplementing opening communicating with the air inlet channel. According to the impeller, the preset gap exists between the side, back on to the air inlet channel, of the hub and the wheel disc to form the air supplementing opening communicating with the air inlet channel, so that the air inlet airflow and the air supplementing airflow enter the impeller from the two sides of the hub correspondingly, and the air supplementing airflow can act on one side of the hub through the action of the air supplementing airflow; the axial force applied to the impeller by the intake airflow is completely offset or offset part of the axial force applied to the impeller, the axial load of the impeller can be reduced, the axial load of a bearing is reduced, the operation efficiency of the compressor is improved, and meanwhile the operation stability of a rotor in the compressor can be improved.

The utility model provides a kind of improved rotary joint, including joint body, rotating sleeve and sealing element, the sealing element and rotating sleeve are sequentially sleeved and rotated on joint body from top to bottom, the lower side of the joint body is equipped with the limiting flange for being used to limit installation rotating sleeve below rotating sleeve, the middle part of the joint body is equipped with the annular clamping groove that is recessed radially inward, the upper side of the rotating sleeve is equipped with the limiting buckle that is extended radially inward for being used to clamp into annular clamping groove to prevent rotating sleeve from coming out of joint body.The utility model forms limiting buckle directly on rotating sleeve, by clamping limiting buckle into the annular clamping groove of joint body, to limit installation rotating sleeve, prevent rotating sleeve from coming out of joint body.

The application provides a double-suction centrifugal pump with a built-in driving mechanism, and belongs to the field of fluid delivery and special motor combination. The application comprises a split pump shell, an impeller, a pump shaft and a built-in driving mechanism. The pump shaft is fixed inside the pump shell, and two impellers are symmetrically sleeved on the pump shaft and can rotate around the pump shaft. The built-in driving mechanism is an axial flux motor structure, comprising a magnet and an induction coil. The induction coil is fixed on the pump shaft and located between the two impellers, and the magnet is embedded in each of the two impellers. A rotating alternating magnetic field is generated by electrifying the induction coil, which drives the impellers with the magnets on both sides to rotate synchronously around the stationary pump shaft, so as to realize the delivery of fluid. The application realizes the self-balancing of axial magnetic force, significantly reduces the axial load of the water-lubricated bearing, and prolongs the service life of the bearing and the whole machine.

The utility model discloses a kind of reducer of radial force double support output structure, including reducer body, the bottom of reducer body is fixedly connected with base, the front end center of reducer body is equipped with opening, and opening place protrudes with the shaft lever that can rotate, the front of reducer body is equipped with output mechanism, output mechanism includes box, and the front end of reducer body is fixedly connected with the rear end of box;By setting two groups of herringbone gear structure, since the axial force and radial force of bearing exist mechanical coupling relationship, therefore herringbone gear can indirectly affect the balance of radial force through its symmetric design, the axial force generated by its double helix structure can be mutually cancelled out, to reduce the axial load of bearing, the balance of this axial force indirectly reduces the stress pressure of radial bearing, to reach the effect of resisting radial force, not only further improve the service life of reducer, while also improve the stability of bearing overall structure.

The utility model discloses a double-bearing pull box, which comprises a pull box and an encoder, the encoder is inserted on the pull box through a pin block, the pull box comprises a sleeve box, the sleeve box is provided with a cylindrical groove and a lead hole, the sleeve box is provided with a cover plate, the sleeve box and the cover plate are respectively provided with a bearing, and the bearing is provided with a bearing. A hub is arranged on the pair of bearings, a clockwork spring is arranged on the outer side of the hub, and a buffer connecting column is arranged between the hub and the encoder. The pull box disclosed by the utility model relates to the technical field of pull boxes, realizes tool-free quick disassembly and assembly, improves the replacement efficiency of the encoder and thoroughly avoids the clockwork spring disassembly risk; the axial load of the encoder is reduced by a hub double-bearing supporting structure, vibration impact can be absorbed in cooperation with a composite damping system of a spring steel buffer column and a rubber ring, and the operation precision of the encoder under severe working conditions is ensured in combination with the low-friction design of an auxiliary telescopic ball.

The motor includes a shaft (10), a rotor (100), a stator (200), and a frame (300). The shaft is rotatably supported on the frame with axial location sleeve bearings (20, 30B) located at each axial end of the shaft. The axial clearance that limits axial movement of the shaft in one of the two axial location sleeve bearings is larger than the axial clearance in the other of the two axial location sleeve bearings. During normal operating conditions, axial movement of the shaft is limited only by the bearing with the smaller axial clearance, and during abnormal events, axial movement of the shaft is limited by both bearings, with the bearing with the larger axial clearance reducing the axial load of the first bearing.

The present disclosure relates to the technical field of electromagnetic bearing, and particularly relates to an electromagnetic bearing rotor system, which comprises a rotating shaft and a mounting base, the mounting base is coaxially provided with an electromagnetic bearing assembly and an auxiliary bearing assembly, the rotating shaft is arranged through the electromagnetic bearing assembly and the auxiliary bearing assembly; the auxiliary bearing assembly comprises an outer ring valve seat, an inner ring valve seat and an auxiliary bearing, the outer ring valve seat is connected with an outer ring of the auxiliary bearing, and the inner ring valve seat is connected with an inner ring; a gap is formed between the outer ring valve seat and the mounting base along the axial direction of the rotating shaft, an elastic member is arranged in the gap, a connecting hole for the rotating shaft is arranged on the inner ring valve seat, an abutting surface is formed on the wall of the connecting hole, the abutting surface is inclinedly extended along the axial direction of the rotating shaft and away from the rotating shaft, the rotating shaft is abutted with the abutting surface, so that the axial and radial loads are balanced through the elastic member, the auxiliary bearing is protected, the supporting effect of the auxiliary bearing assembly on the rotating shaft is further improved, and the electromagnetic bearing assembly is better protected.