13results about How to "Rotation limit" patented technology

The utility model discloses a contact type surface roughness measuring instrument, which comprises a device main body and turnover plates arranged on two sides of the lower half part of the device main body, the turnover plates are rotatably connected with the device main body, the turnover plates are positioned on two corresponding sides of the lower half part of the device main body, and the turnover plates are connected with the device main body through rotating rods. A limiting nut used for limiting rotation of the overturning plate is connected to the rotating rod in a threaded screwing mode. The turnover plate is arranged at the lower half part of the device main body, so that a user can rotate the turnover plate through the rotating rod, the turnover plate can support the device main body, and when the user uses the device main body, the turnover plate can be used for supporting the device main body above the ground; and meanwhile, after the overturning plate rotates to a proper position, the rotation of the overturning plate can be limited through the limiting nut, and the phenomenon that the overturning plate rotates in the use process is avoided.

The invention discloses a precise nasal feeding medicine mixing device, and relates to the technical field of nasal feeding medicine mixing. Mounting through holes which are matched for use are formed in the four corners of the bottom end of the mounting bottom frame in a penetrating manner; through cooperative use of the mixing mechanism, the clamping mechanism and the mixing assisting mechanism, a mounting base can be conveniently clamped and fixed, later-stage disassembly is facilitated, convenience is provided for operation and use of medical staff, in addition, a transparent batching scale drum can be driven to rotate in a reciprocating mode through a concentric-square-shaped rotating frame and the mounting base, and the operation efficiency is improved. Meanwhile, an inner connection inserting rod, a driving inserting block and a driving inserting groove limit rotation of a mixing assisting rotating disc, so that rotation of a mixing assisting rotating rod can be limited, rotation of a mixing assisting impeller can be limited, and therefore the mixed and shaken-up nasal feeding medicine can be blocked and impacted; furthermore, the mixing uniformity and the mixing efficiency of nasal feeding medicines are effectively improved.

The invention discloses a culture device for preparing immune cells, relates to the technical field of cell culture, and aims to solve the problems that in the shaking process, due to shaking inertia, the shaking amplitude of a material is too large, the material is excessively splashed, or a culture material is damaged in the shaking process generated by shaking. According to the culture device for preparing the immune cells, a rubber ring is matched with a grooved wheel, the grooved wheel rotates in a wheel groove of a grooved block in the process of moving up and down on a connecting plate and rotating, a rubber pad is tightly attached to the surface of the grooved wheel, friction force generated when the grooved wheel rotates is increased, and in the process that the grooved wheel is driven to rotate without external force, the friction force is increased; rotation of the grooved wheel and the connecting plate is limited, and the situation that in the process of shaking the culture material, due to shaking inertia, the vibration amplitude of the material is too large, the material is excessively splashed, or the culture material is damaged in the vibration process generated by shaking is prevented.

The utility model provides a car carrier binding device, which belongs to the field of binding devices.The car carrier binding device is composed of a car supporting plate, a vertical plate, a rolling mechanism, a binding mechanism and a pushing mechanism, in the scheme, a rotating shaft is convenient to rotate through arrangement of a hand wheel, the rotating shaft rotates to drive gears to rotate, and the two gears are meshed with each other, so that the two gears rotate at the same time; the gear rotates to drive the winding roller to rotate, the winding roller rotates to wind the binding belt, so that the binding belt can be bound more tightly, the pawl can be propped through the elastic force of the spring, the pawl is meshed with the ratchet wheel, and the ratchet wheel can only rotate in one direction through meshing of the pawl and the ratchet wheel. The ratchet wheel is arranged on the winding roller, so that the binding belt can be tighter and tighter when the winding roller winds, when the binding belt is tightened by winding, the pawl and the ratchet wheel are meshed to limit rotation of the winding roller, the through hole is used for hooking the hook, the hook is used for fixing one end of the binding belt, the binding belt can be arranged on a wheel of a car in a sleeving mode, and therefore a tire is bound.

The utility model provides a pointer type rotation braking meter, which comprises a watch main body, a bottom shell installed at the bottom end inside the front end of the watch main body, a driving device installed at the front end of the bottom shell, an adjusting knob installed at the right end of the driving device, a chassis installed at the front end of the driving device, a rotating disc installed at the front end of the chassis, and a braking button installed at the right upper end of the rotating disc. A pointer mechanism is installed at the front end of the center of the rotating disc, a scale ring is installed at the front end of the rotating disc, and protective glass is installed at the front end of the scale ring. According to the pointer type rotary brake meter, the watch can be shaken by arranging the scale ring, the rotating disc, the chassis, the brake groove, the brake button and other structures, the rotating disc rotates around the limiting block under the action of force, the chassis is in the shape of a brake disc of a sports car, a model of a brake device is installed at the right end of the front end of the chassis, and the rotating disc is in the shape of a hub of the sports car; therefore, the watch looks like a running sports car wheel, brings cool and passion feelings to people, and adds fun to the watch with a single structure.

The utility model discloses a kind of wing quick-release mechanism and aircraft, wing quick-release mechanism includes: inner wing mounting seat and outer wing mounting seat;Two ends of inner wing mounting seat are respectively provided with butt joint tenon, first connecting hole is provided on butt joint tenon;Two ends of outer wing mounting seat are respectively provided with butt joint groove, first fixed boss and second fixed boss are provided with on butt joint groove two sides;Butt joint tenon and butt joint groove are fixed to an entity with inner wing mounting seat and outer wing mounting seat;When butt joint tenon is clamped in butt joint groove, first bolt is inserted first fixed boss and is inserted in one end of first connecting hole, second bolt is inserted second fixed boss and is inserted in the other end of first connecting hole.The utility model is fixed to an entity with inner wing mounting seat and outer wing mounting seat by setting butt joint tenon and clamping groove, by accurate cooperation of butt joint tenon and clamping groove, reduce the butt joint difficulty of inner and outer wing, simultaneously, reduce butt joint time.

The utility model relates to the technical field of adapter sleeves, in particular to an anti-falling adapter sleeve. According to the technical scheme, the device comprises a fastening sleeve, a metal gasket and a nut, the outer surface of the fastening sleeve is sleeved with the metal gasket and the nut, fixing threads are arranged at the position, close to the lower surface, of the outer surface of the fastening sleeve, and a penetrating opening is formed in the outer surface of the fastening sleeve; and first sealing grooves are symmetrically formed in the positions, close to the upper surface and the lower surface, of the inner wall of the fastening sleeve, second sealing grooves are symmetrically formed in the positions, close to the two sides of the inserting opening, of the inner wall of the fastening sleeve, and sealing rubber strips are arranged in the two first sealing grooves and the two second sealing grooves correspondingly. In the using process of the adapter sleeve, lubricating oil is prevented from permeating between the adapter sleeve and the shaft, and therefore displacement and slipping of the adapter sleeve on the shaft are prevented.

The utility model provides a kind of combined hoop for cable, belong to hoop field, it is by half hoop, connecting mechanism, anti-loosening mechanism, support mechanism and adjusting mechanism constitute, in the scheme, through fixed screw C mobile insertion in mounting ring, and fixed screw C is threadedly connected on half hoop, can limit nut rotation, so that nut cannot rotate, ensure that two half hoops cannot be separated after assembly, since cross arm is rotated by pivot, so that the inclination angle of cross arm can be adjusted, to facilitate the inclination angle of cross arm is adjusted according to the height difference of multiple cables, the setting is used for fixing cross arm by fixed screw B, to limit the rotation of cross arm, and fixed screw B is detached from mounting disc separation, so that cross arm can be rotated, moving can drive connecting seat to move by guide rod, to adjust the distance between connecting seat and cross arm, so that the distance between two connecting seats can be adjusted according to the distance between cable.

The utility model discloses a mask device for a 1.5 kV direct current circuit breaker, and belongs to the technical field of masks of circuit breakers. The mask device comprises a circuit breaker body, a mask is installed on one side of the circuit breaker body, a rotating mechanism is installed on the front surface of the mask, the rotating mechanism comprises a first annular groove, and the first annular groove is formed in the front surface of the mask; when the limiting groove and the clamping groove are oppositely arranged, namely, the rotating disc can be adjusted, and when the rotating disc is rotated, the limiting disc cannot make contact with the rotating disc under the action of the clamping groove, so that the rotating disc can be adjusted, or when the limiting groove and the clamping groove are oppositely arranged, the limiting disc is rotated to enable the position of the clamping groove to be changed, and the rotating disc cannot make contact with the rotating disc. At the moment, the limiting disc blocks the rotating disc, so that rotation of the rotating disc is limited, the rotating action of the rotating disc and the limiting disc is limited by ingeniously utilizing the relative position relation of the limiting groove and the clamping groove, and therefore the mistaken touch prevention function is improved when the device is used or not used.

The utility model relates to the technical field of children products, and discloses a safety seat base and a child safety seat. The safety seat base comprises a base body which is provided with a mounting cavity; the retractor assembly is mounted in the mounting cavity and comprises a reel; the connecting belt is wound on the reel; the one-way locking assembly comprises an operation part and a one-way locking mechanism in linkage fit with the operation part, the operation part is movably arranged on the base body, the operation part is provided with a first position and a second position, in the first position, the one-way locking mechanism locks the reel in a one-way mode and the connecting belt can be pulled out in a one-way mode, and in the second position, the one-way locking mechanism locks the reel in a one-way mode. The one-way locking mechanism unlocks the reel, and the connecting belt can be automatically retracted. The problems that in the installation process of the child safety seat, operation is inconvenient, and efficiency is low are solved.

The utility model relates to a special fixing device of ejection tube belongs to ejection lifesaving device technical field, including fixed limiting frame, fixed limiting frame includes frame body, is fixed with two first limiting portions and two second limiting portions who set up oppositely on the frame body, two second limiting portions are located between two first limiting portions, still include connecting pin, the pin hole is seted up on the first limiting portion, and the connecting pin is used for passing through the pin hole and the middle hole of pulley assembly on the cabin wall board connection, the clamping groove is seted up on the second limiting portion, and the clamping groove is used for with the protruding of the upper clamp both sides on the upper end of ejection tube inner tube and connects, through two first limiting portions and the cooperation of pulley assembly, can limit the position of fixed limiting frame, make fixed limiting frame and pulley assembly, upper clamp fixed connection, because the position of pulley assembly on the cabin wall board is fixed, can limit the rotation around the axle of ejection tube inner tube, only one person can carry out the dismounting operation of nut, avoids the problem that the tacit understanding of two people cooperation is poor.

The invention discloses a water retaining structure for flood prevention in a pumped storage power station, comprising a concrete edge prevention, an impeller, a waterproof wall and a linkage mechanism, wherein a water well is provided at the top of the concrete edge prevention, a drainage channel is provided at the bottom of the water well, the impeller is arranged in the water well, the waterproof wall is hinged at the top of the concrete edge prevention, the linkage mechanism comprises a push rod, a lifting screw rod, a first transmission shaft, a second transmission shaft, a gear pair and a lifting transmission member, the first transmission shaft, the second transmission shaft and the lifting transmission member are all rotatably arranged in the concrete edge prevention, the lifting screw rod is threadedly connected to the lifting transmission member, the first transmission shaft is connected to the lifting transmission member, the second transmission shaft is connected to the impeller through the gear pair, the push rod is hinged to the lifting screw rod and the waterproof wall, a clutch is provided between the first transmission shaft and the second transmission shaft, a clutch button is provided at the top of the concrete edge prevention, and the clutch button is connected to the clutch. The water retaining structure for flood prevention in a pumped storage power station can timely waterproof and disconnect the connection between the impeller and the waterproof wall, reduce damage and extend service life.