108results about How to "Avoid self-locking" patented technology

The invention belongs to nuclear power plant pressurized water type reactor structure technology, and particularly discloses a ball cone irradiation sample stopple with a self-locking pressurized water reactor. The stopple is composed of an upper end head, a substrate, an optical shaft, a water pressure pushing rod, a cone ring, a ball, a locknut and two springs, wherein the upper end head is positioned at the upper end of the substrate, the spring is arranged in the substrate, the cone ring is positioned at the lower end of the substrate, the water pressure pushing rod penetrates the center of the cone ring and enters the inner cavity of the substrate, the cone surface of the cone ring is fitted with the ball, and the two springs are mounted outside the water pressure pushing rod in a sleeving manner. The cone ring and the ball are mounted below the substrate, and the ball and the cone ring are tightly fitted, through the adoption of the designed pushing rod structure, and the cone surface pushes the ball outwards to ensure that the ball and the wall of an irradiation sample hole are locked automatically. The irradiation sample stopple is simple and not high in processing precision, and can not be affected by cold water long term corrosion in operation process. Higher safety margin can be obtained after uniform loading of a plurality of balls, and the additional arrangement of the overload protection structure can further improve safety.

A motor vehicle brake, in particular an electromechanically actuable motor vehicle brake, having an actuator subassembly, including a housing, a servo element which is movable in relation to the housing, for moving a brake pad, a motorized drive, a movement mechanism arranged between the motorized drive and the movable servo element, a gear arrangement associated with the movement mechanism, wherein the movement mechanism has a ball screw with a spindle that can be driven in rotation and a nut that can be displaced linearly in the housing, wherein the nut may be moved, for moving the servo element, by driving the spindle in rotation within the housing. In this motor vehicle brake it is provided for the gear arrangement to have a wrap spring clutch which is arranged in the flow of force between the motorized drive and the spindle such that the wrap spring clutch permits torque to be transmitted from the motorized drive to the spindle, and is constructed to block transmission of torque from the spindle to the motorized drive.

A solid particle thermal expansion vibration composite forming process of a car rear axle housing includes: shrinking diameter to obtain a reducing pipe blank, heating, assembling a primary-bulging die, performing primary bulging to obtain a primary-bulging pipe blank, heating again, assembling a secondary-bulging die, performing secondary bulging to obtain a secondary-bulging pipe blank, heating for the third time, assembling a pressing die, and pressing to obtain the car rear axle housing. The process has the advantages that the problem of equipment seal in transitional car rear axle housing hydraulic bulging is solved; formability of the car rear axle housing is increased evidently, die assembly force is reduced during forming, and the thinning ratio even crack probability of the formed car rear axle housing are reduced; vibration plastic forming is used, so that pipe blank plastic deformation resistance can be lowered, machining quality of the car rear axle housing can be improved, and machining energy consumption of the car rear axle housing can be lowered; the relative motion conditions between the die and a workpiece is improved, and 'self-locking' among solid particles during car rear axle housing forming is avoided.

The invention discloses a push-pull type self-locking connector. The connector consists of a male head and a female head, wherein one of the male head and the female head is used as a first end of theconnector; and the other one is used as a second end of the connector. An outer sleeve is arranged at the first end. A lock sleeve slidably sleeves an outer side of the outer sleeve. A first lock retreating groove, a locking point and a second lock retreating groove are sequentially arranged in an inner wall of the lock sleeve along an axial direction, a side hole is arranged in an outer wall ofthe outer sleeve, a lock ball is arranged in the side hole, a spring acting in the axial direction is arranged between the outer sleeve and the lock sleeve, and when a spring is located at a balance position in an assembling state, the locking point right faces the side hole. An outer cylindrical surface is arranged at the second end, and an annular groove is arranged in an outer cylindrical surface in a circumferential direction and corresponds to the lock ball. Quick insertion and self-locking of the connector are realized through push-pull action of the lock sleeve, the connector is in a locked state during self-locking, reliability is very high, and the connector cannot be pulled out for unlocking in a pulled state if a pulling force towards an outer end is not actively applied to thelock sleeve.

The invention discloses a high-efficiency rock breaking drilling head for adjusting and controlling the lateral cutting ability adaptively. The high-efficiency rock breaking drilling head comprises adrilling head connector and a drilling head hat portion which are fixedly connected, wherein the drilling head hat portion is evenly provided with a plurality of drilling head cutter wings in the circumference direction, the drilling head cutter wings extend from the side wall of the drilling head hat portion to the end portion of the drilling head hat portion, the outer end faces of the sides, close to the drilling head connector, of the drilling head cutter wings extend outwards in the radial direction to form gauge protection blocks, the front ends of the drilling head cutter wings in the clockwise directions are provided with a plurality of main cutting teeth in the generatrix direction, the rear ends of the main cutting teeth on the drilling head cutter wings are provided with subsidiary cutting teeth, the front ends of the gauge protection blocks in the clockwise directions are provided with a plurality of the main cutting teeth in the generatrix direction, and the rear ends of the main cutting teeth on the gauge protection blocks are provided with gauge protection subsidiary teeth with the end portions being capable of performing elastic stretching and contracting. Accordingto the high-efficiency rock breaking drilling head for adjusting and controlling the lateral cutting ability adaptively, adaptive adjusting of the main cutting teeth on the gauge protection blocks onthe well wall cutting depth is realized by utilizing the gauge protection subsidiary teeth capable of performing the elastic stretching and contracting, so that the effect of adjusting and controlling the overall lateral cutting ability of the drilling head is achieved.

The electric retractable view device for a vehicle includes a view device rotating section including a view section body mounted therein, a rotation support section that supports the view device rotating section so as to be rotatable relative to a predetermined rotation axis, and an electric driving mechanism that electrically moves the view device rotating section to either of a retracted position and an extended position. The electric driving mechanism includes a motor, and a power transmission mechanism that transmits a drive force of the motor to the view device rotating section to rotate the view device rotating section in the direction around the rotation axis. The power transmission mechanism includes a double-threaded worm, and one or more motor-side worms disposed on the motor side relative to the double-threaded worm. Each of the one or more motor-side worms is a single-threaded worm.

The invention discloses a clamping device and a slicer with the same. The clamping device comprises a control part, a wedge part, a clamping part and a shell and is characterized in that the wedge part is provided with a first end, a second end and a first oblique surface between the first end and the second end, and the wedge part expands from the second end and the first end; the clamping part is provided with a second oblique surface, the first oblique surface and the second oblique surface are oppositely arranged, and the first oblique surface can move relative to the second oblique surface; the shell is provided with a first guide part, a second guide part and a cavity, the control part is mounted in the first guide part, the clamping part is mounted in the second guide part, and thewedge part is arranged in the cavity; by controlling the control part to move towards the wedge part, the control part contacts with the first end of the wedge part, pushes the wedge part to move andallows the first oblique surface of the wedge part to contact with the second oblique surface of the clamping part and move along the second oblique surface, and accordingly the pushing force, along afirst direction, of the control part is converted into clamping force, along a second direction, of the clamping part.

The invention belongs to the technical field of measurement of the axial play of bearings, and relates to a measuring method and measuring device aiming at the axial play of four-row tapered roller bearings. The measuring device is mainly composed of an adjusting device, an inner ring clamping device, an outer ring loading device and a play measuring device. By adjusting the position of a threadedguide rod relative to a guide sleeve, clamping of different inner rings is achieved; through the loading device, loading of different rows of rollers is achieved. The measurement of the axial play oforiginal four-row tapered roller bearings is equivalently converted into the measurement of the axial play of three sets of two-row tapered roller bearings ingeniously, the measuring method is simpleand easy to operate, self-locking of rollers is avoided, during measurement, turning is not needed, the method can be implemented through automated equipment, and the measuring efficiency and the measuring precision are greatly improved.

The invention discloses a building capable of avoiding cross infection through indoor foul air control. The building comprises a sealed heat preservation room body, an air supply system, an air exhaust system, a ventilation heat recovery system, an environment source heat exchange system and a refrigerating and heating system; one or more personnel gathering belts are distributed in the sealed heat preservation room body; the air supply system comprises a fresh air supply end communicating with an indoor space; the air exhaust system comprises a foul air receiving end communicating with the indoor space; and the refrigerating and heating system comprises an indoor refrigerating and heating device and a fresh air refrigerating and heating device, wherein the indoor refrigerating and heating device is used for refrigerating and heating air in the sealed heat preservation room body to the set indoor ideal temperature, and the fresh air refrigerating and heating device is used for refrigerating and heating fresh air supplied by the air supply system to the range lower than the set indoor temperature limit value. Foul air and fresh air released in the technology cannot be crossed or mixed, and therefore indoor cross infection can be avoided.

A special quick clamping mechanism designed for increasing efficiency and improving the quality of clamping systems that can be used in various vises, C-clamps and all other clamping applications. This invention applies a concept of using two sets of opposing thread angles; one thread set is used at engagement, while the other is used at clamping. By using these two sets of opposing helix angles it creates opposing axial forces against each other, so as to force the clamping thread set to rotate first in the process of releasing a clamping force. This function would prevent a sudden drop in clamping force; a problem most quick clamping designs having in the industry. And, a collar jam preventing device that can stop a collar in the radial direction before it bumps into an axial dead end, which causes a tight jam and becomes hard to crank in the subsequent working cycle.

The conducting apparatus is for the position alteration of conducting blades (6) in a turbocharger exhaust gas turbine flowed through axially. The blades are arranged axially symmetrically to the turbine axis (1) in an exhaust gas flow channel (14) and can be pivoted by a pivot device around a radially fitted axis (8). To each blade is fitted a shaft (18) which extends through a housing wall radially outwards from the flow channel. This shaft with its outwardly extending part is rotatably located around a pivot axis (8). The pivot device contains a positioning ring (19) rotatable around the turbine axis and positioning levers (20) transmit torque from the positioning ring to the shaft of each blade.