39results about How to "Guaranteed not to loosen" patented technology

The invention discloses a clamping apparatus used for fixing a revolving body. The clamping apparatus comprises a clamping apparatus body fixed on a worktable, regulating rods, press plates, two supporting frames and a guide frame, wherein one of the supporting frames is fixed on one end of the clamping apparatus body, the other supporting frame is movably fixed on the other end of the clamping apparatus body, and a removable guide frame is arranged between the supporting frames; the guide frame and the supporting frames are provided with coaxial heart-shaped holes, the supporting frames are further provided with the regulating rods, and the regulating rods are verticality fixed on the axes of the heart-shaped holes; and the press plates are arranged below the regulating rods, the press plates are used for fixing a workpiece on the clamping apparatus body through the regulating rods, and each press plate is arc-shaped. The clamping apparatus used for fixing the revolving body provided by the invention can guarantee that the workpiece is not easy to loose through the regulating rods, the press plates, the supporting frames and the guide frame when being processed; and the procreative precision is improved, the structure is simple and practical, and the clamping apparatus is suitable for volume production.

The invention discloses a bolt anti-loosening structure. The bolt anti-loosening structure is characterized in that the bolt anti-loosening structure comprises a lock bolt, a lock nut and a lock snap spring; the lock nut is screwed into the lock bolt; the lock snap spring is arranged above the lock nut; a lock tongue of the lock snap spring is embedded into a groove of the lock bolt, and a notch of the lock snap spring is embedded into a clamping key of the lock nut; and meanwhile a lock snap spring key is embedded into a groove of the lock nut. According to the anti-loosening bolt method, bolt pretightening force can be controlled within a constant and effective range, connecting parts operating in a vibration state can be effectively connected and safely and normally work, and maintenance operations like mounting and dismounting are made convenient and fast.

The invention discloses a three-core terminal fixing device which structurally comprises a terminal, a connecting ring, a cable and a cable joint. The cable is connected with the connecting ring, theconnecting ring is fixedly mounted on the terminal, the terminal is electrically connected with the connecting ring and cable, the cable joint is electrically connected with the cable, and the cable joint is arranged in the end, far from the connecting ring, of the cable. The device has the advantages that when the cable is inserted into the cable joint, the cable generates a thrust on a rotatingplate, the rotating plate is pushed to rotate and pushes a second rod to move along the rotating plate, two clamping plates move towards each other according to a lever principal, the cable is clamped, and when a central shaft rotates, a connecting line drives a movable block to rotate, a slide rail generates a negative pressure, the stranded cable core is sucked in in the sucking port, it is ensured that the cable core is not loosened, and the cable core is tightly applied to a current conducting plate.

The invention discloses a high-voltage transformer. Fixing frames are fixed to the lower surface of an upper iron yoke. Threaded sleeves are arranged in the fixing frames, and threaded rods penetrate through the threaded sleeves. The threaded rods are sleeved with locking nuts, and the locking nuts are located below the threaded sleeves. Driving discs are arranged at the tops of the threaded rods. Driving devices are arranged on the fixing frames. The output ends of the driving devices are connected with the driving discs through belts. Sliding blocks are arranged at the bottoms of the threaded rods. The upper surfaces of upper pressing plates make contact with the lower surfaces of fixing blocks. Sliding sleeves are fixed in the fixing blocks. The sliding blocks slide in the sliding sleeves. Elastic components are arranged between the bottoms of the sliding blocks and the bottom surfaces inside the sliding sleeves. According to the high-voltage transformer, automatic pressing devices can exert pressure on the upper pressing plates continuously, so that it is guaranteed that a whole winding will not become loose between the upper iron yoke and a lower iron yoke, and it is also guaranteed that coils will not get loose between the upper pressing plates and lower pressing plates.

The invention discloses an FSAE racing car rear wheel hub capable of realizing quick disassembling and assembling of an axle shaft and a disassembling and assembling method. The rear wheel hub comprises a three-column-groove shell and a sealing device. A through cavity is formed in the center of the three-column groove shell. The through cavity is sealed by the sealing device. The sealing device comprises an end cover, an end cover gasket, a sealing circular ring and a sealing circular ring gasket. The end cover and the sealing circular ring are correspondingly matched with the through cavity.The sealing circular ring is pressed on the through cavity by the end cover. An annular stepped table is arranged on the center of one end of the sealing circular ring, and the end cover gasket is pressed on the annular stepped table by the end cover. A circular groove which is concentric with the sealing circular ring is formed in an outer cylinder surface of the sealing circular ring, the sealing circular ring gasket is arranged in the circular groove, and the outer surface of the sealing circular ring gasket is in tight contact with the inner surface of a rear wheel hub body after assembling. When the axle shaft is disassembled, one end of the axle shaft impacts the sealing circular ring to enable the sealing circular ring and the axle shaft to move towards the outer side of a vehicleuntil the other end of the axle shaft falls from a differential mechanism groove shell to achieve the disassembling of the axle shaft. The rear wheel hub simplifies the disassembling and assembling process of the axle shaft and shortens the maintenance time.

The invention provides a two-degree-of-freedom rope-driven finger force feedback device, which includes a hand support mechanism, a thumb movement mechanism, an index finger movement mechanism and a handle mechanism. The hand support mechanism includes a motor, a motor shaft sleeve, a slide rail and an IMU sensor. The thumb movement mechanism comprises a long rotating disc, a torque sensor, an angle sensor, a thumb sleeve, a pressure sensor, two connecting rods, a thumb bracket and a thumb fixing ring. The handle mechanism consists of a cylindrical grip, a pressure sensor, a flexible retaining strap, and a slider. The torque is transmitted between the rotating disk and the motor through a rope. The handle mechanism can move back and forth and reset itself. The invention overcomes the problems of high cost and non-adjustable traditional finger force feedback, and is compact to wear and has self-adaptive freedom; the rope transmission ensures that the feedback force is soft and real; through the mounted sensor, the hand posture, thumb and forefinger rotation angle and Grip force, middle finger contact force and other information.

The invention relates to an orthodontic arch wire with gradually changing orthodontic force value and its forming process and device. This kind of orthodontic arch wire gradually changes the orthodontic force value and elastic modulus from the front teeth to the posterior teeth, so that it can provide more reasonable orthodontic force values ​​for different teeth and different patients, and reduces the impact of the orthodontic force on the periodontal ligament. tissue damage. The present invention realizes the gradual change of the orthodontic force value of different parts on a single orthodontic arch wire by changing the cross-sectional shape of different parts of the orthodontic arch wire and adjusting the value of the orthodontic force by means of aging heat treatment.

The invention relates to a single-layer bi-directional double-rope curtain wall support, which comprises a dragline clamp in form of a circular sheet, the middle of which is hollow and on which four abutments for fixing the dragline is provided. On each abutment, a semi-circle groove and an internal thread hole are provided. The four semi-circle grooves are distributed in cross way taking two as one group, the two groups of semi-circle grooves are vertical to each other in space. Each abutment is provided with a dragline-fastening end cover, on which also a semi-circle groove and a thread hole are provided. The fastening end cover is fixed on the abutment by a bolt. The abutment and the two semi-circle grooves for fastening the end cover coordinate each other to fix the dragline. The end of one fastening end cover is provided with an interface for connecting with the overlap connecting jaw. The invention makes possible adding no structural part in a space with a big span, and can guarantee the permeability of structures to the max. extent.

The invention discloses an automatic pressing device which comprises a fixed frame, a thread bushing, a screw rod, a locknut, a drive plate, a drive device, a belt, a sliding block, a fixed block, a sliding sleeve and a flexible assembly. The thread bushing is arranged in the fixed frame; the screw rod penetrates through the thread bushing; the screw rod is sleeved with the locknut; the locknut is located on the lower side of the thread bushing; the drive plate is arranged on the top of the screw rod; the drive device is arranged on the fixed frame; the output end of the drive device is connected with the drive plate through the belt; the sliding block is arranged at the bottom of the screw rod; the sliding block slides in the sliding sleeve; the sliding sleeve is fixed in the fixed block; the flexible assembly is arranged between the bottom of the sliding block and the internal bottom surface of the sliding sleeve. The automatic pressing device can apply pressure to an object below the fixed block continuously, semi-automatic operation is achieved, no manual operation is needed, and convenience and rapidness are achieved.

The invention discloses a time synchronization device with a data line fastening function. The device comprises a time synchronization device body with the data line fastening function. A data line jack is arranged in the back of the time synchronization device body with the data line fastening function. A protection frame is fixedly arranged on the back of the time synchronization device body with the data line fastening function. Adjusting rods are arranged on both sides of the data line jack on the back of the time synchronization device body with the data line fastening function. The telescopic ends of two adjusting rods are fixedly connected through a connecting cross plate. A line clamp plate is fixedly arranged at the top of the connecting cross plate. A line clamp buckle is fixedlyarranged at the bottom of the line clamp plate. A data connection line is inserted into a line insertion slot on the surface of the protection frame. The line clamp plate is in clamp connection withthe surface of the data connection line. One end of the data connection line is inserted into the data line jack. According to the time synchronization device with the data line fastening function, the data connection line is not loosened; normal operation of the time synchronization device with the data line fastening function is ensured; the time synchronization device with the data line fastening function is prevented from data loss caused by the loose data connection line; and the device facilitates the work of people.