42results about How to "Smooth and stable rotation" patented technology

The invention discloses a near-remote distance comprehensive transfer placing system for a building. The near-remote distance comprehensive transfer placing system comprises a translation track mechanism, a positioning mechanism, a jacking mechanism, an underpinning beam, a monitoring mechanism as well as a rotating mechanism, wherein the rotating mechanism is arranged on the lower end surface of the underpinning beam; the rotating mechanism comprises an upper rotating base and a lower rotating base; the upper rotating base and the lower rotating base are rotationally connected; an annular bulge is formed in the lower end surface of the upper rotating base; an annular groove matched with the annular bulge is formed in the upper end surface of the lower rotating base. The annular bulge and the annular groove are matched with each other, so that mutual matching of the upper rotating base and the lower rotating base can be achieved, the whole building is on a stable platform and in a rotating environment in the rotating process, internal stress generated to the building in the rotating process is effectively reduced, the building can be prevented from structural damage, and the phenomenon of crack or collapse can be effectively avoided.

A motor includes: a bearing sleeve arranged with a base and having opposite opening and sealing ends; a stator coupled with the base or bearing sleeve; a rotating member disposed in the bearing sleeve and comprising a shaft and a limiting portion adjacent to the sealing end, wherein a first end of the shaft connects with the limiting portion, a second end of the shaft has a coupling portion, and the limiting portion has a first contact surface; a thrust bearing arranged between the shaft and the bearing sleeve and having a second contact surface facing the first contact surface, wherein at least one of the first and second contact surfaces is an uneven surface; a hub coupled with the coupling portion of the shaft and having a permanent magnet corresponding to the stator.

A lifting appliance structure used for lifting and overturning an aircraft comprises a front lifting fame, a front lifting arm, an L-shaped lifting beam, a rear lifting frame, a locking sliding block, a front lifting clasp and a rear lifting clasp. The front lifting frame is connected with the front lifting arm through a hinge. The vertical rod end of the L-shaped lifting beam is connected with the rear lifting frame through a hinge, and the transverse rod end of the L-shaped lifting beam is connected with the front lifting arm. The locking sliding block is located on the transverse rod of the L-shaped lifting beam, and a double-lifting lug is arranged at the bottom of the locking sliding block and connected with the front lifting clasp. The front lifting clasp and the rear lifting clasp are each divided into two parts, and through holes are formed between the two parts of the front lifting clasp and the two parts of the rear lifting clasp respectively, after assembly with a front end journal and a rear end journal of the aircraft is finished, the two parts of the front lifting clasp and the two parts of the rear lifting clasp are buckled and connected through bolts. According to the scheme of the lifting appliance, the overall truss-type structure with the hinged front part and the fixedly connected rear part is adopted, and the lifting appliance structure used for lifting and overturning the aircraft is convenient to operate, simple, reliable, high in universality and suitable for rapid lifting and overturning of various wing-fuselage combination aircrafts, launch vehicles and the like, and has broad application prospects in the field of aerospace.

The invention relates to a transmission structure of a PTZ (Pan/Tilt/Zoom) camera, wherein the PTZ camera comprises a camera, a cloud platform and a supporting base; a motor and a rotating shaft are arranged in the cloud platform; a synchronous belt pulley is fixedly arranged at one end of the rotating shaft, which is positioned inside the cloud platform; the motor is in drive connection with the synchronous belt pulley through a belt; when the motor operates, the rotating shaft is driven to rotate in a bearing by the synchronous belt pulley; the synchronous belt pulley and the rotating shaft are coaxial mutually; one side of the synchronous belt pulley, which corresponds to the rotating shaft, is provided with a boss structure; a frustum is arranged on the plane of the boss; and when the synchronous belt pulley is matched with the rotating shaft, the frustum is totally inserted into a hollow structure of the rotating shaft and the plane of the boss is tightly attached to the rotating shaft. The frustum takes an assembly positioning effect in the assembling process, so that the rotating shaft and the synchronous belt pulley can be in close fit more accurately, the problem that the rotating shaft and the synchronous belt pulley are eccentrical mutually in the operating process is avoided and the rotating process of the PTZ camera in use is more smooth and stable.

The invention relates to an armrest horizontal limiting device, a seat and an automobile. The limiting device comprises a gravity assembly and a ratchet wheel assembly, the gravity assembly is used for controlling unlocking and locking of the ratchet wheel assembly, and the ratchet wheel assembly comprises a ratchet wheel lock disc, ratchet wheel swing teeth, a ratchet wheel swing tooth unlocking rotating shaft and a main shaft; the ratchet wheel assembly comprises ratchet wheel swing teeth and a ratchet wheel lock disc, the ratchet wheel swing teeth are meshed with the ratchet wheel lock disc, the ratchet wheel lock disc is used for controlling a handrail to rotate, the ratchet wheel swing teeth are rotationally connected with the main shaft, the gravity assembly comprises a gravity lock and a gravity lock disc, the gravity lock is fixedly installed on the ratchet wheel lock disc, and the gravity lock is meshed with the gravity lock disc when located at the first position; the gravity lock disc is fixedly connected with the main shaft, and the ratchet swing teeth are rotationally connected around the ratchet swing tooth unlocking rotating shaft. Through cooperation of the gravity assembly and the ratchet wheel assembly, the one-way locking function of the handrail is achieved; and the problem that in the prior art, after a seat backrest rotates, armrests cannot be kept horizontal, and the comfort of passengers is affected is solved.

The invention discloses a water blocking gate for a river dike. The water blocking gate for the river dike comprises a gate body, and further comprises a water flow noise control device; the water flow noise control device comprises supporting rods, a flow guiding plate and walking wheels; the first ends of the supporting rods are connected with the top of the gate body in a hinge manner, and thetail ends of the supporting rods are connected with the walking wheels; the flow guiding plate is arranged on the supporting rods and is fixedly connected with the supporting rods, and is used for performing flow guiding on running water flowing out of a water overflow port of the gate body; and the walking wheels are arranged on a riverbed.

The invention relates to a folding mechanism. The folding mechanism comprises a bracket body, a folding assembly connected to the bracket body at an angle, a folding control assembly and a linkage locking assembly used for operating the folding assembly to be folded and mounted on the bracket body. The linkage locking assembly comprises a linkage assembly and a locking assembly, one end of the linkage assembly is in transmission connection with the folding control assembly, and the other end of the linkage assembly is in transmission connection with the locking assembly; the locking assembly comprises push bodies, spring bolts and groove holes, wherein the groove holes are used for cooperatively inserted by the spring bolts to fix locking assembly to the bracket body; the push bodies are provided with push-pull slideways, and the push-pull slideways are provided with protrusive push blocks and recessed pull grooves; the spring bolts include bolt bodies and return springs arranged for cooperating with the bolt bodies, wherein the bolt bodies slide up and down on the protrusive push blocks and the recessed pull grooves. The folding control assembly is operated to for transmission ofthe linkage assembly, and the linkage assembly pulls the push blocks to move, so that the bolt bodies are pulled out of the groove holes on the basis of a pull force of the protrusive push blocks or the bolt bodies or are inserted back into the groove holes on the basis of a return force of the recessed pull grooves and a resilience force of the return springs.

The invention discloses a chain linking unit and a linking structure. The linking unit includes an independent chain ring and an external chain, a head of the external chain is connected with two endsof an inner circle of the independent chain ring, an opening groove is formed in the middle position of a cross bar below the independent chain ring, an external block is arranged above the opening groove, a fixing groove is formed in the bottom of the opening groove, an adjustable moving round plate is arranged in the fixing groove, a locating round rod is arranged on a front end face of the moving round plate, and a head of the locating round rod extends out of the fixing groove and is connected with a curve-shaped column. According to the chain linking unit and the linking structure, the adjustable locating round rod and the curve-shaped column are arranged at the bottom of the independent chain ring, the position of the locating round rod is adjusted to adjust the angle of the curve-shaped column for connection with the external chain, the stability can be strengthened through adjustable main and sub sleeve plates on an external circle of the curve-shaped column, and a chain can be extended and connected in series, and is convenient to use.

The invention discloses a pushing structure based on computer vision grading equipment. The pushing structure comprises a bottom plate, a fixing hole, a sliding strip, a sliding block, a material ejecting structure, a power line and a control switch, and the fixing hole is formed in the surface of the bottom plate. According to the pushing structure, the material ejecting structure is optimally arranged, a small motor is used as a power source, a rectangular seat moves in the horizontal direction through cooperation of a gear and a rack, a worm and a worm gear are installed in the rectangular seat, then a roller can be driven to adjust the position and change the orientation angle in the horizontal direction, meanwhile, a driving motor serves as a power source, one end of the roller is lifted upwards through rotation cooperation of a connecting rod piece and a rod piece, and the roller can slightly move under the action of springs, so that the situation that objects are directly pushed to cause overlarge stress on the objects is avoided, and the quality of the objects during grading is guaranteed to a certain extent.

The invention discloses an adjustable positioning and clamping device for a regular polygonal dynamic sculpture and an adjustable positioning method thereof. The regular polygonal dynamic sculpture comprises a stand column, a driving mechanism, a transverse support beam module, a rotating sculpture module and an adjustable positioning and clamping module; and the adjustable positioning and clamping module comprises two adjustable positioning discs, two L-shaped connecting blocks and high-strength thread connecting pieces. The dynamic sculpture is assembled by modular modules, is driven by adopting a speed reducing motor, is simple and reasonable in structure, is free of influencing overall beauty, can guarantee uniform and stable rotation, and has the advantages of high adjusting precision, simple structure, reliable connection, high positioning precision, capability of quickly mounting and dismounting and few fitting types.

The invention discloses a microbial sensor for detecting cadmium ions, which structurally comprises a machine body, a detection device, a transmission line and a collection module, when the microbial sensor is used, a sampled test tube vertically extends between two clamping pieces, the lower end parts of the clamping pieces are connected with resisting blocks, and the resisting blocks can be pressed at the two ends of the outer side of the test tube, so that the test tube is effectively limited; a test tube is translated upwards and extends into a sealing connecting piece, the sealing connecting piece has a sealing effect on the test tube, the phenomenon that waste water in the test tube overflows during shaking is prevented, a shaft rod drives a mounting ring to move under the action of a motor, and the sealing connecting piece drives the test tube to stably rotate under the action of the mounting ring; substances in the wastewater are effectively and uniformly mixed.