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

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 outdoor power distribution cabinet with fire-proof and rain-proof functions, which comprises a cabinet body, and is characterized in that the outer wall of the cabinet bodyis provided with a fire-proof plate, the fire-proof plate is formed by sequentially laminating a waterproof layer, a first thermal insulating layer, a support layer, a second thermal insulating layerand a barrier layer, the first thermal insulating layer and the second thermal insulating layer are compact spongy expansion foam layers, and a base is horizontally arranged at the lower side of the cabinet body. The outdoor power distribution cabinet with fire-proof and rain-proof functions can effectively prevent a fire through wrapping the fire-proof plate at the outer side of the cabinet body,and the safety is improved. The vibration of electric power components can be greatly reduced through designing a lower damping spring, a left damping spring and a right damping spring, the electricpower components are ensured not to be loosened on an installation base plate, a rain-proof and sun protection cover improves the rain-proof and sun protection ability of the cabinet body, and the service life of the cabinet body is prolonged. In addition, buffering is performing through sand filled in a triangular funnel, so that the buffering effect is good, and the vibration of the power distribution cabinet is effectively reduced. The outdoor power distribution cabinet is simple in structure, stable in performance and long in service life.

The invention discloses a graphene charging plug device for new-energy electric vehicles and a method for the graphene charging plug device. The graphene charging plug device comprises a plug device [1] and a socket device [2], and is characterized in that the plug device [1] comprises a plug handle [28], plugs [3] and a connecting wire [4], the socket device [2] comprises a ceramic socket [13], a magnet N (north) pole [14], a magnet S (south) pole [15], a carbon brush holder [16], a carbon brush device [17], a second spring [18] and a spring adjusting bolt [19], and the plug handle [28] is provided with a first movable end [7], a buckle device [8], a feed rod [9], a handle [10], a first spring [11] and a second movable fulcrum [12]. The graphene charging plug device and the method have the advantages that the graphene charging plug device is simple in arrangement and convenient to use, requirements on high power, currents and charging speeds in electric vehicle charging procedures can be met, heating or faults due to poor contact can be prevented, spark and electric arc can be effectively reduced, and the plugs can be guaranteed against being loosened or retreated.

The invention relates to a novel absorption tower which comprises a tower body, a sealing cover, an air inlet and an air outlet, wherein the tower body is used for placing an absorbing agent bed layer, the sealing cover is arranged at the top of the tower body, the air inlet and the air outlet are arranged on the tower body, an air cylinder compression device used for downwards compressing the absorbing agent bed layer is arranged on the sealing cover, an air flow distribution plate is arranged above the air inlet inside the tower body, a plurality of holes are arranged on the air flow distribution plate, and the hole diameters of the holes are gradually increased from the circle center of the air flow distribution plate in the radial direction. When a carbon molecular sieve bed layer downwards sinks, a piston rod of the air cylinder compression device pushes the hole plate and a cocoa pad to downwards move for tightly compressing the carbon molecular sieve bed layer, and the carbon molecular sieve bed layer is ensured not to get loose, so the pulverization phenomenon of the molecular sieve bed layer can be prevented. In addition, the hole diameters are gradually increased from the circle center of the air flow distribution plate in the radial direction, so the flow rate at the cross section of an air flow outlet can be uniform, and the utilization rate of the absorbing agent can be greatly improved.

The invention discloses a numerical control diamond abrasive wire sawing machine. The outer surface of a wire storage barrel (5) of a wire transporting mechanism of the numerical control diamond abrasive wire sawing machine is covered with a wire barrel outer ring protecting glue layer, and an upper wire frame (7) and a lower wire frame (8) are arranged on a column (6) from top to bottom. An outerring of a tensioning wheel (9), an outer ring of a driving wheel I (10), an outer ring of a driving wheel II (11) and an outer ring of a transition wheel (12) are sleeved with protective sleeves, a diamond wire (13) is wound around the wire storage barrel (5), the driving wheel II (11) is vertically connected with a pneumatic tensioning device (15), the pneumatic tensioning device (15) pushes thetensioning wheel (9) to move up and down to adjust the position of the tensioning wheel (9) to enable the diamond wire to maintain a constant tension state, the other side of a lathe bed (1) is provided with a cutting working table (16), and the bottom of the cutting working table (16) is provided with a driving assembly. The numerical control diamond abrasive wire sawing machine not only is goodin use effect and wide in applied range, but also is resistant to abrasion and long in service life.

The invention provides a bolt locking structure, and belongs to the technical field of fasteners. The bolt locking structure comprises a first bolt, a nut in threaded fit with the first bolt and a second bolt. A threaded hole in threaded fit with the second bolt is formed at the screw tail end of the first bolt. The thread turning directions of the second bolt and the first bolt are opposite. Thefirst bolt sequentially penetrates through two to-be-fastened workpieces. The nut and the first bolt are screwed from the opposite side, and the second bolt is screwed into the threaded hole from theopposite side so as to fasten the two to-be-fastened workpieces. The thread turning directions of the first bolt and the second bolt are opposite, and therefore the first bolt and the second bolt restrain each other to achieve the anti-loose locking aim.

The invention discloses a double-thread lock bolt. The double-thread lock bolt is characterized by comprising a double-thread bolt body, a double-thread concave nut and a double-thread convex nut. A concave external thread is arranged on a thread section of the double-thread bolt body. The double-thread concave nut is provided with two sections of internal threads with different nominal diameters. A convex internal thread is arranged on the inner side of a central round hole of the double-thread convex nut, and an external thread is arranged on a boss portion of the double-thread convex nut. The double-thread convex nut and the double-thread concave nut are installed on a threaded section of the double-thread bolt, and a convex inner thread on the inner side of the double-thread convex nut is correspondingly screwed with a concave outer thread of the double-thread bolt body. A boss part external thread of the double-thread convex nut is correspondingly screwed with a large nominal diameter internal thread of the double-thread concave nut, and a small nominal diameter internal thread of the double-thread concave nut is correspondingly screwed with a thread of the double-thread bolt body. According to a locking method of the double-thread lock bolt, the pre-tightening force of the bolt can be effectively controlled within a constant and effective range, loosening of the bolt and the nut is prevented, and the state of the bolt and the state of the nut are locked.

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.

A spicule pressurizing system capable of preventing loosening is composed of circular spicules and matched pressurizing nuts, wherein the two ends of the circular spicules are each provided with a thread and a pointed cone. Each front end thread is short, a through hole for a steel wire to penetrate through transversely runs through the rear end of each circular spicule, and a retreating groove easy to break is formed between the thread and the through groove; each rear end thread is long, and the large diameter of the thread is equal to the diameter of a polished rod of the corresponding spicule. During the internal fixation of a tension band steel wire for a patella fracture, the steel wire can penetrate through the through holes of the front ends of the two spicules on a patella lower pole and then be folded back and crossed to be wound around the spicule of a patella upper pole to be screwed and fixed in an 8-shaped mode; in addition, the fixed steel wire and the patella upper poleare squeezed by the two pressurizing nuts, the two ends of the spicules are broken or cut off, and then the firm fixation free of spicule tip stimulation and looseness and beneficial for spicule taking can be achieved; when the spicule pressurizing system is used for the internal fixation of a clavicle fracture intramedullary needle or the humerus pl humeri medial malleolus fracture fixation or other fixation modes where the front end of a spicule does not need to penetrate through opposite side bone cortex, through the combination of the rear pressurizing nuts and the front end threads, it can be avoided that the spicules get loose and slip out forward or backward.

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.