32results about How to "Large axial thrust" patented technology

The invention provides a cone plate type stepless speed changer. A driving cone plate and a driven cone plate respectively consist of a pair of movable cone plates and pressurizing cone plates, a pressurizing mechanism consists of an end surface cam pressurizing mechanism arranged at the back side of at least one pressurizing cone plate in a driving shaft pressurizing cone plate and a driven shaft pressurizing cone plate, a speed regulating mechanism consists of a speed reducing shaft, a hollow screw rod and a screw nut, the hollow screw rod and the screw nut are respectively arranged at the back side of a driving shaft movable cone plate and a driven shaft movable cone plate, the hollow screw rod and the screw nut are of ball screw structures or sliding spiral structures, through a speed regulating shaft and a constant ratio transmission mechanism, the conversion relationship of the rotation of the speed regulating shaft to the axial movement of the driving shaft movable cone plate and the driven shaft movable cone plate meets a formula that i1=i2, and the driving shaft movable cone plate and the driven shaft movable cone plate are enabled to do synchronous identical-speed and identical-direction movement. The end surface cam pressurizing mechanism and the speed regulating mechanism of the speed changer are separated in space, the axial dimension of the pressurizing mechanism can be reduced, the positive and reverse two-way pressurization can be realized through the end surface cam pressurizing mechanism, the pressurizing pressure can be regulated in real time along with the transmission torque, the transmission efficiency is high, the service life of a system is long, and the reliability is high.

Switchable mechanical coolant pump (10) comprising a pulley wheel (12) co-rotating with and supported by a rotatable rotor shaft (16), the pulley wheel (12) being directly drivable by a combustion engine, a pump wheel (18) rotatably supported at the rotor shaft (16), an electrically switched wedge-coupled wet friction clutch (40) with a clutch support (26) being fixed to the rotor shaft (16), a clutch ring (30) at the proximal side of the pump wheel (18), and a separate clutch disk (20) rotatably and shiftably supported by the rotor shaft (16), the clutch disk (20) comprising a ferromagnetic element (21) and being arranged axially between the clutch support (26) and the clutch ring (30), a static electromagnet (24) axially pulling the clutch disk (20) to the clutch support (26) into a disengaged position when energized, and a wedge coupling mechanism (22) defined at the proximal side of the clutch disk (20) and the distal side of the clutch support (26), the wedge coupling mechanism (22) comprising: a wedge element (36), and a counter-wedge element (38).

The invention belongs to the field of tubular bus welding process attachment devices, and particularly relates to a universal adjustable tubular bus welding bracket. The universal adjustable tubular bus welding bracket comprises an axial supporting base. A plurality of axial guide wheels are distributed on the axial supporting base. Tubular buses are erected on the axial guide wheels, and the outer rims of all the axial guide wheels are matched to form a supporting part. The universal adjustable tubular bus welding bracket further comprises a lifting mechanism. A rotation supporting base is arranged on the lifting mechanism. The roll surfaces of a plurality of circumferential wheels on the rotation supporting base form a contact face. The minimum height of the contact face is lower than the supporting height of the tubular buses on the supporting part of the axial supporting base after the lifting mechanism falls. The maximum height of the contact face is higher than the supporting height of the tubular buses on the supporting part of the axial supporting base after the lifting mechanism rises. The universal adjustable tubular bus welding bracket achieves the online rotation and frontward-backward axial movement capacity in the tubular bus welding process, and therefore the aim of the one-time online welding is achieved under the condition that no mechanical hoisting is needed, the welding speed can be obviously increased, and the welding quality can be obviously improved.

The invention discloses a driving device for a triaxial inertially stabilized platform. The device is suitable for driving the swing of a roll frame and an elevation frame of the triaxial inertially stabilized platform. Different from a traditional sector gear transmission or a cog belt transmission, the device adopts a link mechanism to realize the swing of the roll frame and the elevation frame. The driving device is composed of a fixed end hinge pair, a motor-lead screw movable pair and a swing end hinge pair. When the motor bi-directionally rotates to drive the lead screw to axially move forwards and backwards, a swing hinge shaft mounted on a swing frame drives the swing frame to rotate around the center of rotation to swing back and forth. Compared with the traditional sector gear transmission or the cog belt transmission, the structure has the advantages of large transmission ratio, good transmission rigidity, light and small driving unit, simple structure and the like. The device disclosed by the invention is suitable for driving the roll frame and the elevation frame of inertially stabilized and photoelectric servo platforms for aerial remote sensing, target tracking and the like.

A permanent magnet thrust bearing for self adaptation runner weight, comprises a stator, a runner, an auxiliary radial bearing with air gap between the stator and the runner. The stator is made of n pairs of alternating magnetizing permanent magnet ring stacked and the non magnet conductive ring clipped between adjacent permanent magnet rings. The runner is made of m pairs of alternating magnetizing permanent magnet ring stacked and the non magnet conductive ring clamped between adjacent permanent magnet rings. Among them, n and m are all natural numbers. The permanent magnet thrust shaft uses the stator and the runner's permanent magnet ring to bear the weight of the runner along the axis, assisting the radial bearing to distribute the radial force, in order to realize the balance on each freedom degree, with big axle thrust force, simple structure, convenient loading, self adaptation runner weight, difficult to lose magnet, and free from lubricant and cooling. It is especially fit for the occasion that requires for large scale thrust bearings.

The invention relates to a variable transmission ratio limited-slip differential with self-locking function. Including the differential case (1), the variable transmission ratio planetary gear (2) and the side gear (3) arranged in it, and the cam between the rear end surface of the side gear (4) and the rear end surface of the differential case (6) ring (5), locking ring (7), return spring (8) and spring cover (9), the side gear (3) is provided with a friction plate (10), and a central square (11) is arranged in the middle of the differential ) and cross shaft (12), they form a self-locking mechanism. The invention provides a limited-slip differential that realizes self-locking under extreme road conditions and quickly and automatically unlocks when leaving extreme road conditions, thereby improving the passability and safety of the vehicle. The invention is especially suitable for all kinds of wheeled engineering machinery such as off-road vehicles, dump trucks, wheel loaders, bulldozers and the like.