140results about How to "Anti-loose effect" patented technology

The invention discloses a rotor vane locking structure, and relates to the technical field of engines. The rotor vane locking structure comprises rotor vanes, a drum and a locking block, wherein the rotor vanes are mounted in mortises in the drum through tenons, and are locked in the circumferential direction of the drum through the locking block; a first profile is arranged at one end of the locking block; a second profile is arranged at the other end, opposite to the first profile, of the locking block; half-profile grooves are formed in margin plates of the rotor vanes; the half-profile grooves at the two adjacent rotor vanes form an integral groove fit with the first profile; a clamping groove fit with the second profile is formed in the drum; and at least one of the first profile and the second profile is dissymmetric. The rotor vane locking structure has the benefits that the rotor vane locking structure can prevent the locking block from being mounted reversely at the axial front and back of the drum through the first profile or the second profile.

The invention relates to a stainless steel metal plate surface cleaning machine and a cleaning process. The cleaning machine comprises a workbench, a telescopic support and a cleaning device, the telescopic support is installed at the upper end of the workbench, and the cleaning device is mounted at the upper end of the telescopic support. The telescopic support comprises a telescopic plate and asupport plate, and the cleaning device comprises a wet spraying mechanism, a brush cleaning mechanism, a brush wiping mechanism, an air drying mechanism and a pressing mechanism. A plate enters the workbench through a conveying belt, and is wetted, cleaned, swiped and dried orderly through the wet spraying mechanism, the brush cleaning mechanism, the brush wiping mechanism and the air drying mechanism. When the plate passes through the brush cleaning mechanism, a pressing mechanism presses the brush cleaning mechanism, and a brush cleaning cam is rotated, so that the brush supporting frame isdriven to do left-right and up-down reciprocating motion in a wavy groove, and finally the cleaning brush is driven to thoroughly clean the concave-convex boundary of the plate.

The invention relates to an elliptical hole machining device. A workpiece clamping device, a spindle box and a power head are arranged on a seat frame; the spindle box is arranged above a longitudinal feeding device; a hollow worm wheel spindle, a circumferential feeding worm wheel and a circumferential feeding worm spindle are arranged inside the box; a first eccentric axial through hole is formed on the hollow worm wheel spindle; a hollow shaft is arranged in the first eccentric axial through hole; the two ends of the hollow shaft are fixedly connected with pinions respectively; the pinions are meshed with internal gears which are fixedly connected at the two ends of the box; the gear ratio and the pitch diameter ratio of the internal gears and the pinions are both 2:1; second eccentric axial through holes are formed on the two pinions; a cutter spindle is arranged in the second eccentric axial through holes; one end of the cutter spindle is provided with a cutter; and the other end of the cutter spindle is connected with the power head through a telescopic universal coupling. The elliptical hole in the invention has a smooth formed surface, accurate dimension and high quality, and the elliptical hole machining device can meet batch machining of different elliptical holes with low machining cost.

The present invention discloses a stabilizing device used for fixing a detonation pressure sensor. The stabilizing device comprises a detonation pressure sensor stabilizer and a coaxial cable stabilizer, and the detonation pressure sensor stabilizer is a cylinder equipped with the large and small diameter stepped center holes matching an outer circle of a detonation pressure sensor body. The outer cylindrical surface of a circle body is equipped with the outer screw threads, and the end head is equipped with a concave edge bench. The large diameter center hole is equipped with the inner screw threads, and the outer cylindrical surface corresponding to the middle part of the large diameter center hole is symmetrically equipped with the installing holes communicated with the large diameter center hole. The coaxial cable stabilizer is a stepped cylinder equipped with an internal center hole and the external small, medium and large diameters, wherein the outer cylindrical surface of a small diameter cylinder is equipped with the outer screw threads, the end face is equipped with a counter bore communicated with the center hole. According to the present invention, the measurement data deviation caused by the instability of the sensor and a measurement error caused by the swinging or loosening of a coaxial cable are avoided effectively, thereby guaranteeing the accurate measurement of the detonation pressure sensor to a detonation wave.

The invention provides a lock nut assembly, and relates to the technical field of fasteners. The lock nut assembly comprises a nut body and a gasket which are sequentially arranged in the vertical direction; the gasket is movably sleeved with a lock loop; the bottom surface of the nut body is provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion are each in a right triangle shape, one of right-angle sides of the first protrusion and one of right-angle sides of the second protrusion are both fixedly arranged on the bottom surface of the nut body, the other right-angle side of the first protrusion and the other right-angle side of the second protrusion are both perpendicular to the bottom surface of the nut body, and bevel edges of the firstprotrusion and the second protrusion are the same in orientation; the gasket is of an annular structure, and the top surface of the gasket is provided with a first groove and a second groove; one endof the first groove communicates with the inner circle of the gasket, one end of the second groove is flush with the outer circle wall of the gasket, and the first protrusion and the second protrusion correspond to the first groove and the second groove in position in the vertical direction. The lock nut assembly has the advantages that after tightening, the connection tightness is improved by increasing friction force, and loosening of the nut body can be prevented.

The invention relates to a looseness-preventing mechanism in reversion of a pump impeller, which is characterized by comprising the impeller, a cylinder pin, a shaft sleeve, an inner hexagon screw, an upper shaft sleeve, a main shaft, a plane and a coupling thread, wherein the impeller is screwed on the main shaft by the coupling thread; the impeller abuts against the shaft sleeve which abuts against the upper shaft sleeve, so that the axial movement of the impeller is limited; the impeller is connected with the shaft sleeve by the cylinder pin, and the relative movement of the impeller and the shaft sleeve in the circumferential direction is limited, so that the synchronous rotation of the impeller and the shaft sleeve is ensured; and the inner hexagon screw is screwed on the shaft sleeve and abuts against the plane on the main shaft to limit the relative movement the shaft sleeve and the main shaft in the circumferential direction, so that the synchronous rotation of the shaft sleeve and the main shaft is ensured. The looseness-preventing mechanism has the advantages that the taken measure is as follows: the plane is cut on the original main shaft and simple parts such as a column pin, the inner hexagon screw and the like are added, so that the looseness preventing action in reversion of the impeller can be effectively played. The method is very simple, convenient and reliable, and the cost is low.

The invention discloses an anti-electromagnetic-interference train wheel vibration measurement method based on axle box acceleration. In the method, a system composed of a supporting plate, a rubber sleeve, a wireless speed sensor, a wireless acceleration sensor, a wireless laser acceleration sensor, a signal receiver and a computer is provided. An end cover of a train wheel set is sleeved with the supporting plate, the sensors are fixed to the upper and lower ends of the supporting plate, the coefficient of wheel vibration in the train travelling process is measured through the sensors and transmitted to the receiver through a network module, and the relationship that the coefficient is varied along with train operating speed is finally obtained through the computer. Interferences which the wireless sensors are likely to suffer from are eliminated by combining software with hardware, vibration measurement data is subjected to trend correction through the wavelet trend correction method, and real-time monitoring is achieved in the train travelling process. The system is simple in structure, convenient to carry, simple to operate, convenient to disassemble, high in measurement precision, accurate in analysis and suitable for various passenger and goods trains.

The invention belongs to the field of deep sea work tools, and discloses a hydraulic tool for deep sea cutting. The tool comprises a cylinder, an end cap, a tool rest, a piston rod, a movable cuttingknife, a cutting pillar, a supercharger and a handle, and the left end of the cylinder is provided with the end cap and the right end of the cylinder is fixedly connected to the tool rest; the right end of the piston rod passes through the right end of the cylinder, and the right end of the piston rod is vertically provided with the movable cutting knife; the tool rest is horizontally provided with a guiding chute; the tool rest is also provided with the cutting pillar, in order to match with the movable chopping knife for cutting objects to be cut; the tool rest is also provided with a spacing bench; the supercharger is installed on the end cap; the handle is installed on the cylinder. A chopping type cutting form is used, in order to optimize component structures, realize miniature lightweighting design, and improve underwater operation performance to the largest extent.

The invention discloses a charging pile for a battery car. The charging pile comprises a charging pile body, an interaction control module is arranged in the charging pile body. The charging pile is provided with a plug wire, one end of the plug wire is connected with an anti-theft plug; a jack is arranged on the anti-theft plug, a jack cavity is formed in the anti-theft plug; sealing blocks are symmetrically hinged to the two sides in the jack cavity. The inserting piece is inserted into the jack cavity to push the sealing block to turn and be unfold; the sealing blocks on the two sides can be pushed to rotate and fit through the first elastic piece so as to seal the jack; meanwhile, electromagnets are symmetrically arranged on the two sides in the jack cavity for attracting and clampingthe inserting piece. A contact piece is fixed at the bottom end in the jack cavity and used for being communicated with the inserting piece for charging, authorization information is input to the interaction control module so as to conduct and trigger the electromagnets to be magnetically attracted, the contact piece is conducted at the same time so as to be communicated with the inserting piece for charging, and the electromagnets are triggered to be disconnected when the authorization information is input again and the authorization information input last time is judged to be matched with the adjacent authorization information through the interaction control module.

The invention relates to a method for improving fatigue strength of a bolt through combination of the bolt and a connecting piece material, which belongs to the technical field of machine parts. The method uses a connecting piece and the bolt which consists of a bolt head, a bolt cylindrical part, an incomplete threaded part, a thread tooth removing part and a complete threaded part, wherein if the hardness of a bolt material is Hb, the hardness Hn of the material of a nut of the connecting piece is equal to (0.4-0.9)Hb. The bolt and the nut are combined by selecting different materials and the hardness of the nut is less than that of the bolt so that the contact surface is enlarged to reduce the stress concentration in the process of matching, the capacity of threads of the bolt to bearing stress is strengthened, thus the bolt is not easy to be damaged, the connection is firmer, and the fatigue strength is improved.

The invention discloses an elastic gasket of an anti-loose screw combined structure. The elastic gasket comprises a ring body with a port, anti-slip ratchets are arranged on the bottom surface of thering body, the top surface of the ring body extends upwards to form an anti-loose ring, the anti-loose ring is tapered, so that an outer inclined surface is formed on the outer side surface of the anti-loose ring, a plurality of notches are uniformly distributed in the periphery of the top surface of the anti-loose ring, and the top surface of the anti-loose ring is enabled to form a plurality offirst one-way teeth by the plurality of notches . According to the anti-loose screw combined structure, the elastic gasket, screws and unts are simple in structure, the structure has the functions ofanti-theft, anti-loosening and the like, and solves a series of problems caused by the fact that the screws in existing mechanical equipment cannot ensure to be absolutely anti-loosened and cause loosening of the equipment during running; the structure is stable, the machining is convenient, the batch production is facilitated, the manufacturing cost is low, and the marketization can be conveniently realized; and the invention further discloses a screw assembly of the anti-loose screw combined structure and a nut assembly of the anti-loose screw combined structure.

The invention belongs to the technical field of nuclear power stations, and particularly relates to an anti-looseness bolt assembly for high-radioactivity equipment and an expanding type anti-looseness process. The anti-looseness bolt assembly is formed by assembling an anti-looseness bolt A and an anti-looseness cap, the anti-looseness cap rotates along with the anti-looseness bolt A when the anti-looseness bolt A rotates after assembling is carried out, the upper portion of the anti-looseness bolt A is a round boss gasket, the upper end of the round boss gasket is an anti-looseness bolt screwing head, the overall anti-looseness cap is cylindrical, and a positioning hole matched with the anti-looseness bolt screwing head is designed in the middle of the cylindrical bottom. The anti-looseness bolt assembly is used for repairing work after the anti-looseness bolt on the high-radioactivity equipment losses efficiency; and through matched use of related installation tools, underwater long-distance operation is achieved, and anti-looseness repairing work on the bolt on the high-radioactivity equipment at multiple positions is achieved.

The invention discloses a hanging mechanism and particularly relates to a pulley conveying and hanging mechanism. The pulley conveying and hanging mechanism comprises a U-shaped groove, wherein two groove walls of the U-shaped groove are provided with saw-shaped teeth; an insertion hole is formed in one of the groove walls, an arc-shaped ear plate is placed into the insertion hole and is in threaded connection with a stamped nail, and the length direction of the stamped nail of the arc-shaped ear plate is consistent with the direction of a connecting line between the two groove walls; the arc-shaped ear plate is rotationally connected to the other groove wall; a bar-shaped hole is formed in the arc-shaped ear plate, and a stud is hung in the bar-shaped hole of the arc-shaped ear plate and is hung at the bar-shaped hole through a ring body; and a locating cylinder is arranged on the other groove wall of the arc-shaped ear plate, the locating cylinder of the arc-shaped ear plate is located above the stud and is internally provided with an internal thread in screw thread fit with the stud. By using the pulley conveying and hanging mechanism, the technical defect of angle regulation inconvenience or location unstability of a pulley on a conveying line in the prior art is overcome; and the pulley conveying and hanging mechanism is capable of realizing angle control and stable location.

The invention provides an external wall insulation structure with an elastic structure, and relates to the technical field of external wall insulation. The external wall insulation structure comprisesa wall body, a group of preformed holes matched with fixed barrels are formed in the wall body, and a group of fixed barrels are arranged in the preformed holes; a group of reinforcing ribs are arranged on the inner sides of the fixed barrels, and the reinforcing ribs are connected with the inner walls of the fixed barrels; and an insulation air bag is installed on the wall body, a decoration layer is installed on the insulation air bag, and a group of anti-loosening mechanisms are installed on the decoration layer. The elastic effect of clamping rods is better through torsion springs arranged on the clamping rods, connecting blocks are dragged through steel wire ropes arranged between the clamping rods and the connecting blocks, the two clamping rods are dragged by the steel wire ropes to get close to the inner side, at the moment, connecting bolts can be directly taken down, the steel wire ropes can be conveniently hidden and protected through the arrangement of the connecting blocks, the effect of limiting the connecting bolts in the circumferential direction is achieved through planes arranged on the connecting bolts, and the clamping rods can transversely move to be connectedwith the fixed barrels.

A rotary wall wash lamp with an adjustable light-emitting surface lamp body mainly comprises a lamp body upper part and a lamp body lower part, wherein the lamp body upper part and the lamp body lower part are provided with illumination lamps. The two ends of the lamp body lower part are upwards provided with a hidden support. The two sides of the lamp body upper part are fixed to the hidden support through damping connection elements respectively, and the damping connection elements are arranged between end caps and outer end covers. The two sides of the lamp body upper part are each fixedly provided with one end cap through a sealing ring. The outer end covers are fixed to the outer sides of the end caps through bolt pairs. Shaft type damping connection elements are installed between the end caps and the outer end covers in an embedded type. The hidden support is a sheet type support. The sheet type support is arranged on the shaft type damping connection elements through shaft holes formed in the sheet type support in a sleeved mode, and damping type rotary connection is achieved. The rotary wall wash lamp has the characteristics that the structure is simple and reasonable, use and installation are convenient, damping type rotation is achieved, and a certain anti-loosening function is achieved.

The invention discloses a main shaft for a machining center machine, comprising a shaft core and a shaft seat, wherein the shaft core is combined together with the shaft seat through a 7014C bearing and a 7012C bearing; an outer ring of the 7014C bearing is pressed by using a front end cover and a first spacer bush through bolts on a ring flange; an inner ring of the 7014C bearing is fixed on the shaft core through a first locking nut and a second spacer bush; an outer ring of the 7012C bearing is not fixed; an inner ring of the 7012C bearing is fixed on the shaft core through a second locking nut, a first circular-arc toothed belt pulley and a dust resistant cover; an ejector rod is arranged in the shaft core; a four-valve jaw is arranged below the ejector rod; the ejector rod bears an upward action force of a disc spring through a nut and then transmits the upward action force to the four-valve jaw; the nut and a third locking nut are mutually fastened; the shaft core inputs a torque through the first circular-arc toothed belt pulley; and the first circular-arc toothed belt pulley and the second circular-arc toothed belt pulley are fixed on the shaft core and are positioned above the second locking nut. Compared with the prior art, the main shaft has a more reasonable structure.

The invention provides a multifunctional fastening part and a use method thereof, and belongs to the field of mechanical accessories. The problems that an existing fastening part is low in efficiencyduring construction, troublesome in use and single in function are solved. The multifunctional fastening part comprises a bolt and a nut, the bolt comprises a screw rod and a screw head, the wall of the screw rod is provided with a clamping groove, the inner wall of the top end of the nut is provided with a sleeve groove, a clamping sleeve in the sleeve groove is further included, a clamping blockis mounted on the inner wall of the clamping sleeve, a limiting groove is formed in the outer wall of the clamping sleeve, the position, close to the upper side groove wall, of the limiting groove isan anti-theft segment, the position, close to the lower side groove wall, of the limiting groove is a loosening-prevention segment, a rod groove is formed in the wall of the sleeve groove, an elasticrod is mounted in the rod groove, a reset spring is mounted between the outer end of the elastic rod and the bottom of the rod groove, and pushes the elastic rod, and a limiting block is formed on the inner end of the elastic rod. The fastening part can be adjusted according to needs, the anti-loosening or anti-theft effect is achieved, and the use is convenient and efficient.

One purpose of the invention is to provide a bolt locking device, so that a bolt can be locked in a narrow space. The other purpose of the invention is to provide an engine case which is provided with the bolt locking device. In order to achieve the purpose, the bolt locking device comprises a supporting unit and an anti-loosening unit. The supporting unit is provided with a unit body, the unit body is provided with a plurality of through holes which allow a screw portion of the bolt to pass through and are smaller than the outer diameter of a bolt head, a boss portion is arranged on the upper surface of the unit body in a protruding manner, and a limiting portion and a convex shoulder are formed on the boss portion. The anti-loosening unit is provided with a plurality of anti-loosening holes, each anti-loosening hole is in a shape matched with the peripheral contour of the bolt head, and an opening allowing the limiting part to penetrate through is formed in the anti-loosening unit, wherein the limiting part penetrates through the opening, so that the anti-loosening unit is supported on the convex shoulder, and the movement of the anti-loosening unit in the height direction is limited by bending the limiting part.