154results about How to "Guaranteed locking effect" patented technology

The invention discloses a quickly-separated disconnecting switch, comprising an outer seat, a moving contact, a moving arcing contact, a fixed contact, a fixed arcing contact, an elastic body and a limiting mechanism, wherein the moving arcing contact can slide relative to the moving contact; the elastic body can store energies when the moving contact slides away from the moving arcing contact; the limiting mechanism is used for arranging the relative sliding extreme positions between the moving contact and the moving arcing contact; an outer ring at the tail end of the outer wall of the moving arcing contact is provided with a male buckle in a raised mode; an inner ring at a port of the inner wall of a second conductive slot of the fixed arcing contact is provided with a female buckle; the moving contact is far away from the fixed contact in the process of separating brake; the male buckle is coordinated with the female buckle to connect the moving arcing contact with the fixed arcing contact, the moving contact slides away from the moving arcing contact oppositely, and the elastic body stores the energies; and after the moving contact slides away from the moving arcing contact oppositely to the extreme position, the moving arcing contact is separated from the fixed arcing contact under the action of the limiting mechanism, and the energies stored by the elastic body are released to quickly separate the moving arcing contact from the fixed arcing contact.

The invention discloses an engineering mechanical vehicle, a vehicle steering following control system and a vehicle steering following control method. The system comprises a control valve group, a steering assistance cylinder and a centering cylinder. The control valve group comprises a servo valve, a solenoid valve, a hydraulic control one-way valve and a hydraulic control reversing valve. The servo valve is connected with the steering assistance cylinder, and the solenoid valve is connected with the centering cylinder. The hydraulic control one-way valve comprises a first oil port, a second oil port and a control oil port, the first oil port of the hydraulic control one-way valve is connected with the steering assistance cylinder, and the second oil port of the hydraulic control one-way valve is connected with an oil returning tank. The hydraulic control reversing valve comprises a control oil port and a working oil port, the control oil port of the hydraulic control reversing valve is communicated with a hydraulic circuit arranged between the solenoid valve and the centering cylinder, and the working oil port of the hydraulic control reversing valve is connected with the control oil port of the hydraulic control one-way valve. The engineering mechanical vehicle, the vehicle steering following control system and the vehicle steering following control method improve fast response of the steering assistance cylinder in the following and steering processes and guarantee fast lockout functions of the hydraulic control one-way valve simultaneously.

The application discloses a high temperature support plate self-locking nut processing technology in the mechanical technology field. The high temperature support plate self-locking nut processing technology includes concrete steps: (1) preparing material; (2) blanking; (3) stretching for forming: fixing a mold for high temperature alloy sheet material, pulling two ends of the mold according to shape of a product for repeated stretch forming, and adding lubricant between the mold and the high temperature alloy sheet material when necessary; (4) performing machining for fine trimming; (5) performing linear cutting; (6) performing thread tapping; (7) performing in-process inspection; (8) performing heat treatment: performing solid dissolution and aging treatment, wherein in solid dissolution, setting solid dissolution temperature at 900+/-10DEG C, keeping solid dissolution time for 60min, and then adopting oil cooling; in aging treatment, setting aging temperature at 710+/-10DEG C, keeping aging time for 15-17h, and then adopting air cooling; (9) blasting sand; (10) detecting fault; (11) performing surface treatment: plating silver on the surface of the high temperature alloy sheet material after being processed through the above steps; (12) inspecting. The high temperature support plate self-locking nut processing technology solves the problem that cutter consumption is high in production of support plate self-locking nuts in the prior art.

Disclosed is a self-locking fastening device comprising a screw or nut for fastening at least one first part to a second part and a shim ( 10 ) which is provided with a central borehole ( 11 ). The two surfaces of said shim ( 10 ) comprise means ( 12,14 ) which are fixed within or to the surfaces of the first part and the screw or nut no later than the time that the fastening device is tightened such that self-actuated unscrewing is prevented. The shim ( 10 ) is configured in a resilient manner such that said shim ( 10 ) can be compressed counter to the resilience thereof during tightening of the fastening device.A self-locking fastening device which includes a screw or nut for fastening at least one first part to a second part and a shim ( 10 ) which is provided with a central borehole ( 11 ). The two surfaces of the shim ( 10 ) include rib profiles ( 12,14 ) which are fixed within or to the surfaces of the first part and the screw or nut no later than the time that the fastening device is tightened such that self-actuated unscrewing is prevented. The shim ( 10 ) is configured in a resilient manner such that the shim ( 10 ) can be compressed counter to the resilience thereof during tightening of the fastening device.

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 provides a threshing cylinder with an adjustable threshing diameter, an adjusting method and a combine harvester. The threshing cylinder comprises a threshing cylinder, a diameter adjusting device and a driving device, wherein the diameter adjusting device is positioned on inner sides of a front support amplitude disc and a rear support amplitude disc of the threshing cylinder; and the driving device is used for conducting power to the diameter adjusting device. The threshing diameter of the threshing cylinder can be steplessly adjusted through the diameter adjusting device, meanwhile, the adjusted diameter of the threshing cylinder can be locked by the driving device, and thus operation stability of the threshing cylinder can be ensured. By adopting the threshing cylinder, the cylinder threshing diameter of the combine harvester can be conveniently and rapidly adjusted in real time, the threshing linear velocity and the threshing interval of the threshing cylinder can beadjusted according to harvesting situations, and the threshing adaptability of the combine harvester can be improved.

The invention discloses an intelligent stereo garage capable of being connected with the Internet of Things. The intelligent stereo garage comprises a circular type foundation pit arranged on the ground, a lifting mechanism arranged at the bottom of the circular type foundation pit, a car carrying mechanism arranged on the lifting mechanism, a guide column arranged in the circular type foundationpit, an auxiliary hoisting mechanism arranged at the upper end of the guide column, a locking mechanism arranged on the inner wall of the circular type foundation pit, a ventilating mechanism arrangedon the guide column and a control mechanism used for controlling the lifting mechanism, the car carrying mechanism, the auxiliary hoisting mechanism, the ventilating mechanism and the locking mechanism and arranged on the ground. The floor space is small, quick parking and taking of a plurality of cars can be realized, quick parking and taking of a single car can be realized, the cars can be taken at the exit end after the cars are parked at the entry end, the car taking efficiency is improved, the bottom of the foundation pit can be dried through the arrangement of the ventilating mechanism,and the intelligent stereo garage is connected with the Internet of Things at the same time to reduce the difficulty for car owners to find parking spaces.

The invention discloses an upper-soft lower-hard ground subway station foundation pit support system and a construction method thereof. The support system comprises a building envelope distributed on the outer side of a constructed subway station foundation pit and a middle supporting structure distributed in the middle of the inner side of the subway station foundation pit. The middle supporting structure comprises a plurality of digging piles distributed from front to back. The digging piles are steel pipe concrete piles, and each steel pipe concrete pile comprises a steel pipe supporting column, a middle joint structure and a lower joint structure. The construction method comprises the steps that the building envelope and the middle supporting structure are constructed correspondingly; and when the middle supporting structure is constructed, the multiple digging piles in the middle supporting structure are constructed from front to back correspondingly, and when the drilled piles are constructed, the process comprises the following steps of firstly, pile hole excavation, secondly, steel pipe column hoisting and thirdly, concrete pouring. According to the upper-soft lower-hard ground subway station foundation pit support system and the construction method, design is reasonable, construction is easy and convenient, and the use effect is good; the upper-soft lower-hard ground subway station foundation pit can be effectively supported; and stability in the foundation fit excavation process and stability generated after foundation fit excavation is completed are ensured.

The invention relates to an automatic shell nosing device of an adjustable connector jack. The automatic shell nosing device comprises a bottom plate, an adjustable feed mechanism, a clamping mechanism and an adjustable shell nosing mechanism, wherein the adjustable shell nosing mechanism comprises a left shell nosing assembly and a right shell nosing assembly, and the left shell nosing assembly and the right shell nosing assembly are respectively provided with an adjusting mechanism. The device is advantaged in that a jack clamped by the clamping mechanism can realize an automatic cylindrical open-slot jack shell nosing function through the shell nosing mechanism, flexible setting of shell nosing mechanical structure motion parameters can be realized, automatic shell nosing of the jack having an external diameter phi of 0.8-3mm can be realized without replacing the shell nosing mechanism, shell nosing efficiency is improved, jack reed bending angles of the left shell nosing assembly and the right shell nosing assembly are realized through the adjusting mechanism independently, independent control on the two jack reed bending angels is realized, and a problem of unstable plugging/unplugging force caused by humpback and single side defects after shell nosing because of a jack manufacturing error can be effectively avoided.

The invention relates to a radial tire vulcanization device, in particular to direct vulcanization equipment for a segmental mould of a radial tire. The direct vulcanization equipment overcomes the defaults of large volume, complex structure and high tire production cost of the radial tire vulcanization device in the prior art. The direct vulcanization equipment comprises an upper cover plate, a middle mold sleeve, a lower bottom plate, an upper side plate, an arc-shaped base, a pattern block and a lower side plate, wherein the pattern block is fixed on the inner surface of the corresponding arc-shaped base, and the arc-shaped base is positioned and connected with the lower bottom plate in the axial line direction of the mold without axial displacement, namely, the arc-shaped base and the lower bottom plate can not be moved vertically along with the middle mold sleeve and the upper cover plate; hydraulic locking devices are uniformly arranged on the outer edge of the lower bottom plate along the circumferential direction, lugs are arranged at the top ends of the piston rods of the hydraulic locking devices, open slots are correspondingly arranged at the bulgy part of the lower edge of the middle mold sleeve along the circumferential direction, and are mutually corresponding to hydraulic locking cylinders. The direct vulcanization equipment has the advantages that the structure is simple, the volume is small, the weight is light, the lifting force required for the equipment during mold opening and closing is greatly reduced, automatic locking of the vulcanization equipment is realized, the locking time is short, and the tire production cost is reduced.

The invention discloses a mechanical-hydraulic double security locking hydraulic cylinder which comprises a cylinder body, a piston and a piston rod, wherein the piston and the piston rod are arranged in the cylinder body. A locking cavity is formed in one end of a rodless cavity of the cylinder body and internally provided with a mechanical locking mechanism. A first oil hole and a second oil hole are separately formed in the portions, corresponding to the top and the bottom of the mechanical locking mechanism, of the side wall of the cylinder body. A third oil hole is formed in the portion, corresponding to the extreme movement position of the piston towards the non-locking-cavity end, of the side wall of the cylinder body. The first oil hole, the second oil hole and the third oil hole all communicate with an oil supply pipeline. A hydraulic locking element is arranged outside the third oil hole. The hydraulic cylinder comprises the mechanical locking mechanism and a hydraulic locking protective device, the mechanical locking mechanism can only conduct locking when the piston rod moves to a fixed position, and the hydraulic locking device can conduct locking no matter where the piston rod is located, and in the situation of sudden decompression of the pipeline (such as pipeline burst), when the mechanical locking mechanism is powerless, the hydraulic locking device can respond immediately, mechanical-hydraulic double security is achieved, and malfunction is avoided.

The invention relates to a folding type transport case which comprises a base, opposite first side plates and opposite second side plates. Guide grooves and positioning grooves are distributed in theside face of the edge of the base in a staggered mode. Extending plates for being inserted in the guide grooves and protrusions for being inserted in the positioning grooves extend out of the bottom sides of the first side plates and the bottom sides of the second side plates. Guide blocks which are slidingly arranged in the guide grooves and can rotate in the guide grooves are arranged at the topends of the extending plates. The extending height of the extending plates is larger than the extending height of the protrusions. The folding type transport case has the advantages that a case bodyof the folding case can be conveniently assembled and folded in the absence of fragile mechanical structures, and the connecting and positioning firmness and accuracy of the case body are ensured.

The invention discloses a base self-locking device of a full-automatic washing machine. The base self-locking device comprises the washing machine, universal wheels are arranged at the four corners ofthe bottom of the washing machine, mounting grooves are formed in the edges of the lower ends of the four side surfaces of the washing machine and are internally provided with mounting plates, through holes are formed in the centers of the mounting plates, connection rods penetrate through the through holes, worm gears are arranged at the ends, located at the upper ends of the mounting plates, ofthe connection rods, worm shelves are arranged on the side walls of the mounting grooves, worms are arranged in the worm shelves, threaded rods are arranged at the lower ends of the connection rods,cuboid supporting legs are arranged at the lower ends of the threaded rods, supporting leg holes are formed in the groove bottoms of the mounting grooves, threaded holes are formed in the supporting legs, the lower ends of the threaded rods stretch into the threaded holes, and supporting leg slide grooves are formed in the lower sections of the side walls of the mounting grooves. Self-locking andunlocking of the washing machine can be quickly and conveniently achieved, and the noise generated when idler wheels crawl on the ground while the washing machine conducts washing is removed; meanwhile, the height of the supporting legs can be adjusted, so that a base maintains high stability on a complicated ground.

The invention relates to the technical field of a medical treatment device, and particularly to an absorbable skull fixing lock system and a using method thereof; the absorbable skull fixing lock system comprises an absorbable skull fixing lock and a locker; through correct implantation of the absorbable skull fixing lock, pre-locking of the absorbable skull fixing lock and the final locking, the use of the absorbable skull fixing lock system can be realized. The absorbable skull fixing lock system is simple in operation of skull fixing operation and needs not any machine; the absorbable skull fixing lock system rapidly saves time and saves operation time; due to an ellipse design of the locking face, the locking face is more firm and safer; the tooth-shaped design of the locking face is free from displacement, thus the locker effect is safer and cannot slip off; two locking plates can be aligned to the center through the fixing pin when two locking plates are locked, and the alignment is good; the design of a force limiting valve can guarantee safer fixing of lock body, and guarantee the same big locking force of a doctor to every lock body by locking the fixing lock.

The invention relates to the improved technology of sheet-metal working equipment, in particular to a rear stop and no-go gauge device of a bending machine. The stop and no-go gauge device comprises a stop block arranged on a lifting base and is characterized in that a front penetrating hole and a rear penetrating hole are formed on the lifting base; a driving screw rod matching with a screw is fixedly installed in the front penetrating hole and a vertical guide column is penetrated in the rear penetrating hole; a top plate and a base are fixedly installed at the upper and lower ends of the guide column; an axial hole coaxial to the front penetrating hole on the lifting base is formed on the top plate; the axial hole is used for supporting the polished part at the upper end of the driving screw rod; a retainer ring and a rotating hand wheel are arranged at the upper end of the driving screw rod and the external part extended out of the top plate. The rear stop and no-go gauge device solves problems such as inconvenient operation, worse regulation precision and high processing precision in the rear stop and no-go gauge device of the present bending machine; and a new rear stop and no-go gauge device of the bending machine is provided.

The invention discloses an excavation construction technology for a subway station foundation pit in upper-soft lower-hard ground. The excavation construction technology is characterized in that a middle support structure is arranged in the middle of the constructed subway station foundation pit; a retaining structure of the constructed subway station foundation pit comprises an upper-part retaining structure, a middle-part retaining structure and a lower-part retaining structure; a lower-part foundation pit is divided into an upper foundation pit and a lower foundation pit; the middle support structure comprises a plurality of dug piles; the dug piles are concrete-filled steel pipe piles; and each concrete-filled steel pipe pile comprises a steel pipe support pillar, a middle joint structure and a lower joint structure. The excavation construction of the subway station foundation pit comprises the following steps: A, synchronous construction of the middle support structure and the upper-part retaining structure; B, excavation of an upper-part foundation pit; C, construction of the middle-part retaining structure; D, excavation of the upper foundation pit; and E, excavation of the lower foundation pit. The excavation construction technology is simple in step, reasonable in design, simple and convenient in construction and good in using effect, and ensures that the excavation construction process of the subway station foundation pit in the upper-soft lower-hard ground can be simply, conveniently and quickly completed and is safe and reliable.

The invention discloses a security device for smart home, and belongs to the field of home security. The security device comprises a door leaf, a door frame and an electromagnetic lock. The electromagnetic lock comprises a lock tongue, a lock hole and a power supply unit, wherein an armature is fixed at one end, back to the lock hole, of the lock tongue, the outer side of the armature is sleeved with a coil, and the lock tongue is sleeved with a second spring; a locking groove is formed in one end of the spring bolt, a first inserting rod used for being inserted into the locking groove is installed in the door frame, and an iron block, a first spring and an electromagnet are sequentially arranged on the side, back to the lock hole, of the first inserting rod. The power supply unit comprises a power source and a wire electrically connected with the coil and the electromagnet, wherein an electric switch is arranged between the power source and the wire, a door lock control panel is installed on the front face of the door leaf, an access control recognition device and a power-on button are arranged on the door lock control panel, and the electric switch is electrically connected with the output end of the access control recognition device. The electric quantity consumption can be greatly reduced, the locking effect can be kept when a house power supply system is powered off, and the anti-theft function is good; and the trouble caused by accidental closing of the door leaf can be effectively avoided.

The invention provides a groove anti-loosening bolt, which includes a head and a screw rod. The screw rod has an external thread, and the external thread part is evenly distributed with a number of grooves parallel to the axis of the bolt along the circumference of the bolt. The self-locking nut used for matching at least There is a shut-off that falls into said groove. When the invention is assembled, the contact area between the self-locking nut and the bolt thread is reduced, which can reduce friction, reduce the probability of dry friction, improve the ability of anti-reverse moment, and improve the product life; it has excellent anti-vibration performance and can be used in Guaranteed locking performance under strong vibration environment; can increase assembly speed; provide high, continuous and stable preload and improve fatigue strength; suitable for assembly in places where tools cannot be used.