133results about How to "Self-locking" patented technology

The invention relates to an automatic solar tracking system which tracks the sun accurately in real time and is used for efficiently collecting and using solar energy. The automatic solar tracking device comprises a solar energy photovoltaic array, an adjusting device connected with the solar energy photovoltaic array and used for adjusting the position of the solar energy photovoltaic array, a stand column for supporting the adjusting device and a control system. The adjusting device is composed of a pitch angle adjusting assembly and a position angle adjusting assembly, wherein the pitch angle adjusting assembly is connected with the position angle adjusting assembly through a vertical shaft, the position angle adjusting assembly is arranged on the stand column, and the control system is used for performing closed loop control on the adjusting device. The accuracy in solar tracking of the automatic solar tracking device is smaller than 0.1, the energy consumption only occupies for 0.5% of the electric energy production of the driving photovoltaic array, and the automatic solar tracking system has the advantages of being long in service life, intact in protection function and the like.

The invention discloses a method for digitally driving and detecting a multi-gauge head gyroscope, and belongs to the field of micro-mechanical gyroscope signal processing. The method comprises the following steps of: generating a carrier wave Vi by a digital method, simultaneously generating drive signals Vd1, Vd2,..., and VdN by a drive circuit, and loading the carrier wave Vi and the drive signals Vd1, Vd2,..., and VdN on the gauge head 1, the gauge head 2,..., and the gauge head N of the gyroscope in sequence, wherein N is more than or equal to 2; detecting drive mode capacitors C1, C2,..., and CN, adjusting the drive signals Vd1, Vd2,..., and VdN according to the detected signals so as to make the N gauge heads of the gyroscope work at resonance points; and based on the driving of the gyroscope, detecting sensitive mode capacitors C'1, C'2,..., and C'N, obtaining N angular velocity signals of the gyroscope, and according to N frequency sweeping states S1, S2,..., and SN of the gyroscope, processing the detected angular velocity signals and outputting the final angular velocity by a controller. The method is mainly characterized by locking the resonance frequency by a method of detecting the amplitude of the drive output signal by sweep frequency and has the advantages of the realization of self correction, high frequency stability and high anti-interference ability.

The invention discloses a micro annular resonant cavity-based self-locking dual-optical-frequency comb generation system and method, belongs to the field of an optical frequency comb generation system, and specifically relates to the micro annular resonant cavity-based dual-optical-frequency comb generation system and method. The system comprises an annular resonant cavity and a dual-optical-frequency comb separation system connected with the annular resonant cavity through polarization maintaining optical fibers; the annular resonant cavity comprises an optical amplifier, an optical isolator, a first polarization controller, a micro annular resonant cavity and an optical filter which are connected through the polarization maintaining optical fibers in the cavity; the dual-optical-frequency comb separation system comprises a polarization light beam splitter and a second polarization controller which are connected through the polarization maintaining optical fibers; and the micro annular resonant cavity is a nonlinear micro annular resonant cavity with four ports. By virtue of the asymmetry of the waveguide structure, the TE mode and the TM mode of the waveguide have different indexes of refraction; two modes can be excited at the same time to generate two sets of broadband optical frequency combs with different polarization directions and multiple frequencies; and by virtue of separation and polarization rotation of the cross-polarization dual-frequency comb, the homoclitic super-high multi-frequency broadband optical frequency comb can be obtained.

The invention is applied in the technical field of laser designing, and provides a self-Raman frequency conversion self-mode locking solid laser, which takes a rare earth ion-doped vanadate crystal as a laser gain medium. The laser comprises a pump source and a resonant cavity. The laser gain medium is arranged in the resonant cavity, and is the rare earth ion-doped vanadate crystal. The front and rear light passing surfaces of the laser gain medium are not vertical to a laser light path. Base frequency laser generated by a laser medium is converted into first-order Stokes ultrashort pulse Raman laser by own stimulated Raman scattering and self-mode locking characteristics at the same time of being oscillated in the resonant cavity. The self-Raman frequency conversion self-mode locking solid laser has the advantages of simple and compact structure, high efficiency, high beam quality, stable and reliable performance, high cost performance and the like, and can be applied in the fields of seed sources of ultrashort pulse laser amplifiers, production of yellow ultrashort pulse laser and ultrashort pulse laser with other wavelengths, and the like.

The invention discloses reversible cold-rolling equipment, which comprises a main rolling mill, and a front tension device (9), a front alignment device (8), a rear tension device (11) and a rear alignment device (12) positioned on front and rear sides of the main rolling mill. The middle roll of the eight-roll rolling mill is a transmission roll, the transmission side of two lower supporting rolls (10-7) is provided with a lower rolling wire adjusting device connected with an eccentric shaft thereof, and the lower rolling wire adjusting device comprises a box body (20), a driving mechanism and two sets of worm gear transmission mechanisms placed in the box body. The invention also discloses a production method for the reversible cold-rolling equipment, which comprises working roll opening adjustment before rolling, low-speed direct bite of a to-be-rolled strip steel head, high-speed rolling operation and tensioned low-speed rolling operation of a to-be-rolled strip steel tail. The method can meet the bite condition of the rolling mill, realizes a reversible cold-rolling process without leading strip, has high rolling stability and high production efficiency, and is particularly suitable for reversibly cold-rolling thin specification strip steels.

The invention discloses a processing device and a processing method of a simulated groove in the inner wall of a conical water inlet pipe of a water pump. The processing device comprises a supportingmechanism, a processing mechanism, a rotating mechanism and a feeding machine, wherein the supporting mechanism is arranged at the outer part of the rotating mechanism; an output end of the rotating mechanism is connected with one end of the processing mechanism; the other end of the processing mechanism is connected with an action end of the feeding mechanism; one end of the supporting mechanismis defined as a front part, and one end of the feeding mechanism is defined as a rear part. The processing method comprises the following steps: fixing well a pipeline requiring to be processed, and regulating the feeding mechanism until a cutting tool assembly arrives a to-be-processed position; regulating the shape of a supporting frame, and enabling the supporting frame to press the inner wallof the pipeline; regulating a cutting blade of a cutting tool to be in contact with the inner wall of a to-be-processed pipeline; starting a rotating part, and starting to process a groove in the inner wall of the pipeline; repeating the operation, thus realizing continuous processing of the simulated groove in the to-be-processed pipeline. The processing device and the processing method, disclosed by the invention, have the beneficial effects that an application range is extremely wide, and the processing device and the processing method are not influenced by the size of a pipe wall; a self-locking function is obtained, and the accuracy is higher; the processing quality is high.

The invention discloses an automatic stopping burglary prevention support controlled by a key switch. The automatic stopping burglary prevention support comprises a fixing support; the middle part of the fixing support is provided with a support shaft which is connected with a double-foot support; the double-foot support is fixedly connected with a double-foot support fixed gear wheel; the fixing support is provided with a control circuit board, a motor, a reduction box and a pinion which is arranged on an output shaft of the reduction box; the pinion on the output shaft of the reduction box is in meshing connection with the double-foot support fixed gear wheel; the control circuit board controls the motor to rotate; and the motor drives the pinion on the output shaft of the reduction box through the reduction box to drive the double-foot support fixed gear wheel, and the double-foot support fixed gear wheel drives the double-foot support connected with a support shaft to ensure the double-foot support opened or withdrew. The automatic stopping burglary prevention support has a simple and novel structure, is convenient to use and has an ideal burglary prevention effect. The automatic stopping burglary prevention support used as an automatic stopping burglary prevention support with high performance is widely applied to motorcycles.

The invention discloses a lateral parking double-layer stereo garage comprising a lower platform, an upper platform, a swing rod mechanism, a supporting frame and a power mechanism. The garage lower platform drives a nut module on the lower platform through a lower screw rod to pull the lower platform to go in and go out of a lower parking space along a lower platform track; a parking space of the garage upper platform is located on the plane composed of the swing rod mechanism and the supporting frame; after an upper screw rod pushes the upper platform to completely slide onto the swing rod mechanism through a nut module combination, a cable controls the upper platform and the swing rod mechanism to swing onto the ground; and after vehicles are parked on the upper platform, the cable controls the upper platform to swing to the supporting frame along the swing rod mechanism, and the upper screw rod pulls the upper platform to arrive at the upper layer parking space through the nut module combination. The structure is simple, safety and reliability are achieved, and the ground and space utilization rate is high.

The invention discloses a femoral intramedullary nail device which comprises a main intramedullary nail, a tension screw, an anti-spin screw and a far-end locking nail. The main intramedullary nail comprises a hollow cylindrical nail rod, one end of the nail rod is provided with nail holes, and the nail holes are matched with the tension screw and the anti-spin screw; the other end of the nail rod is provided with one or more screw holes, and the far-end locking nail penetrates through the screw holes. According to the femoral intramedullary nail device, the tension screw can achieve length change and self-locking, and meanwhile a continuous and determined sliding compression effect is achieved, so that the difficulty in measuring the length of a tension nail in a surgery is reduced, the broken end of a fractured bone is firmly fixed, and the loosing phenomenon is prevented from occurring in the surgery and after the surgery. The femoral intramedullary nail device solves the problems that rotation of the broken end of the fractured bone is instable, and the intramedullary nail is cut out of caput femoris, the broken end of the fractured bone can achieve the purpose of continuous compression both in the surgery and after the surgery, separation of the broken end of the fractured bone in the surgery and after the surgery is effectively prevented, the purpose of promoting fracture healing is achieved, and the femoral intramedullary nail device is simple in structure and convenient to operate.

The invention discloses a full-positive-dispersion er-doped optical-fiber laser device based on optical-grating filtering and an adjustment method thereof. The full-positive-dispersion er-doped optical-fiber laser device includes a polarization beam-splitting prism, an isolator, a first 1 / 4 wave plate, an optical grating, a first collimator, a gain fiber, a second collimator, a second 1 / 4 wave plate and a 1 / 2 wave plate so that an annular resonance cavity is formed. A pumping source is coupled to the gain optical fiber through a wavelength division multiplexer. A coupler is connected to the second collimator through the optical fiber. An optical grating is inserted into the annular resonance cavity and the optical grating is used as a filter in the resonance cavity. Through adjustment of the transverse position and the angle of the first collimator, the direction of the first collimator is adjusted so that diffraction light of a specific center wavelength enters the collimator and thus a self-locking mode of the laser device is realized through filtering; and the distances between the first collimator and diffraction points of the optical grating are adjusted so that adjustment of the spectral width of output pulses is realized.

The invention discloses an intelligent vehicle-mounted camera possessing panoramic and close-up functions. A front cover is provided with a high-definition integrated movement and an infrared laser lamp. The front cover and a rear cover are assembled together, are fixed to an inner support and can rotate 20 degree to 90 degree about a shaft where the inner support is located. A shell is fixed to the inner support. The inner support is assembled to a pedestal and can rotate 360 degree about the pedestal. Four wide-angle lenses are installed in the pedestal. In the invention, through using images collected by the high-definition integrated movement on an upper portion, a close-up function is realized; through splicing the images collected by the four wide-angle lenses in the pedestal, a panoramic function is realized; and the camera possesses advantages that the structure is compact; the camera has all the functions; the camera is easy to carry; and operation is simple.

The invention discloses a novel deformable robot. The novel deformable robot comprises a chassis and a plurality of deformable wheel leg parts arranged on the chassis. Each deformable wheel leg part comprises a deformation wheel mechanism and a deformation control mechanism; the deformation wheel mechanism comprises an outer spoke, an inner spoke, three wheel components and three connecting components, wherein the three wheel components are evenly distributed around the outer spoke and the inner spoke, and the three connecting components are sequentially hinged between the adjacent wheel components; the deformation control mechanism comprises a driving motor, a transmission shaft, a synchronous clutch and a deformation clutch; the transmission shaft is connected between an output shaft ofthe driving motor and the outer spoke; the synchronous clutch is used for making the output shaft of the driving motor be connected with or separated from the inner spoke; and the deformation clutch is used for making the inner spoke be connected with or separated from a robot rack. The deformable wheel legs of the robot can deform actively, a deformable wheel structure in any deformation state can be kept, and obstacle crossing efficiency of the mobile robot and adaptability to unstructured terrains are improved.

The invention provides a grabbing mechanism without a driving source and a grabbing method. A workpiece is locked by self-locking based on self gravity and friction force, and therefore energy consumption is avoided. The mechanism comprises a hooking claw grabbing block assembly and a hooking claw seat assembly; the hooking claw grabbing block assembly comprises a hooking claw grabbing block and amounting plate which is longitudinally arranged, and the hooking claw grabbing block is fixed on one side of the mounting plate; the side surface of the hooking claw grabbing block comprises an arc conical surface C used for being grabbed, an axis of the arc conical surface C is arranged in the longitudinal direction, and the conical bottom is downward; the hooking claw seat assembly comprises ahooking claw seat and two hooking claw positioning blocks; a hooking claw groove matched with the hooking claw grabbing block is formed in the upper surface of the hooking claw seat, and the hooking claw groove is provided with an arc conical surface D matched with the arc conical surface C; an opening is formed in one side surface of the hooking claw groove so as to enable the hooking claw grabbing block to enter the hooking claw groove when the hooking claw groove moves upwards; and the two hooking claw positioning blocks are mounted on the two sides of the hooking claw seat, and the hookingclaw positioning blocks position the mounting plate in a contact mode during grabbing.

The invention relates to a one-way self-locking type mechanical hand. The one-way self-locking type mechanical hand comprises a driving assembly used for providing power; a transmitting assembly and a clamping assembly. The transmitting assembly comprises a worm rod, a worm wheel, a first connecting rod and a second connecting rod, the worm rod is fixedly connected with the driving assembly in a linkage mode, the worm wheel meshes with the worm rod, one end of the first connecting rod is hinged to the surface of the worm wheel, and the other end of the first connecting rod is hinged to one end of the second connecting rod; the clamping assembly comprises two clamping sections and a sleeving head, the sleeving head is arranged at the second connecting rod in a sleeving mode, and the second connecting rod is capable of sliding up and down relative to the sleeving head, one ends of the two clamping sections are hinged to the sleeving head, each clamping section includes a clamping rod and an telescopic rod group, wherein one end of the clamping rod is hinged to the sleeving head, and the flexing rod group is capable of stretching and contracting. According to the single way self-locking type mechanical hand, firstly, through the arrangement of the worm wheel and the worm rod, the effects of holding and loosing are achieved, secondly, the worm wheel and the worm rod have the self-locking character, and even if the driving assembly suddenly stops working, the holding effect is not changed.

The invention discloses a hoistway type traction elevator for building construction. The hoistway type traction elevator for building construction comprises a traction machine, a top beam, traction media, a guide wheel, a suspension cage and a counterweight, wherein the top beam is fixed at the upper end of a building hoistway; the traction machine is fixed on the top beam; one end of the tractionmedia is led out by the traction machine and then guided to the suspension cage below the traction machine, and is connected with the suspension cage in a middle fixed mode; the other end of the traction media is led out of the traction machine and then led to the counterweight positioned below the traction machine, and is connected with the counterweight; the traction media are steel wire ropesor steel belts; and the top beam can ascend and descend to move. The elevator provided by the invention has the advantages of high lifting speed and low noise, can be arranged in the elevator hoistwayof a building, and has high safety.

The invention relates to a cylindrical gear tooth backlash adjusting device with a bend screw. The cylindrical gear tooth backlash adjusting device with the bend screw comprises a gear pair, wherein a gear 5 is of an integral type, the other gear consists of a fixed gear 1 and an adjustable gear 2, one end of the fixed gear 1 is provided with a ring boss 11, the adjustable gear 2 sleeves the ring boss 11, one end of an adjusting screw 6 is provided with a bend 61 and is clamped in an axial through hole 21 of the adjustable gear 2, the other end of the adjusting screw 6 is provided with external threads and is spirally connected with a threaded hole in the fixed gear 1, a fastening nut 62 is spirally connected with the outwards extending part of the adjusting screw 6, a locking device comprises a locking screw 7, the locking screw 7 penetrates through a through hole of the fixed gear 1, and the end with the external threads is spirally connected with the threaded hole of the adjustable gear 2. By adopting the structure, the bend 61 drives the adjustable gear 2 to rotate by rotating the screw 6, thus the adjustable gear 2 can rotate for a tiny angle relative to the fixed gear 1 and the adjustment of the tooth backlash is realized.

The invention discloses an automatic alignment center rack. The automatic alignment center rack is characterized by comprising a machine box, a driving device, a translation cam, an upper pressing rodcomponent, a lower pressing rod component and pressing head components, the translation cam is arranged inside the machine box in a left and right sliding manner and is driven by the driving device to move left and right, an upper pressing rod on the upper pressing rod component and a lower pressing rod are made to swing by the translation cam to make the pressing head components located on the upper pressing rod and the lower pressing rod and the pressing head component on the translation cam be simultaneously closed to the axis of a workpiece to be machined, so that the workpiece to be machined is supported, wheel support racks of the pressing head components automatically rotate according to the shape of the outer edge surface of the workpiece to be machined, and two support wheels ofeach wheel support rack are guaranteed to be pressed tightly against the workpiece to be machined simultaneously.

The invention discloses a high-rigidity self-unfolding light shield, and belongs to the technical field of spaceflight. The light shield aims to solve the technical problems that a structural system is complex, positioning precision is not high, and rigidity is not high. Both an upper mounting seat and a lower mounting seat of the light shield are provided with light through holes; a plurality ofspring withdrawing grooves are respectively and uniformly formed in the circumferential direction; connecting block mounting holes are formed in the spring withdrawing grooves; a baffle ring is arranged between the spring withdrawing grooves and the light through holes; the upper mounting seat is connected with the lower mounting seat through a strip-shaped spring group; a driving spring and shading cloth are arranged between the upper mounting seat and the lower mounting seat; an unlocking device is fixedly installed on the side wall of the lower mounting seat through screws, the unlocking device breaks a locking rope, the driving spring drives the upper mounting seat and the lower mounting seat to be separated, the shading cloth is driven to be unfolded, and a strip-shaped spring is automatically unfolded from the folded bent state to the stretched state, thereby achieving the high-rigidity automatic unfolding of the light shield. The light shield has the advantages of high reliability, self-unfolding, self-locking, simple structure, light weight, high rigidity, high unfolding precision and large compression ratio.

The invention relates to a remote control type 360-degree-rotation ventilating window. The remote control type 360-degree-rotation ventilating window comprises an outer frame and a window, wherein the structure of the window is matched with the outer frame and the window sleeves outsides the outer frame; the outer frame and the window are sheathed and connected together through a crossed shaft; the window can rotate in the outer frame around the crossed shaft; one end of the crossed shaft is connected with a worm wheel; the worm wheel is in threaded connection with a worm rod; the worm rod is arranged on a base body; one end of the worm rod is connected with a chain wheel; the chain wheel is provided with a chain; the window can be opened and closed only if people stand on the flat ground and pull the chain, so that remote on-off control of the window is realized; the transmission of the worm rod and the worm wheel is stable and reliable, and the worm rod and the worm wheel have a self-locking property so that the worm rod can drive the worm wheel, and the worm wheel cannot drive the worm rod, and furthermore, outdoor air cannot drive the window, and the window is relatively safe and reliable; the worm rod and the worm wheel can drive the window to rotate for 360 degrees, so that glass on inner and outer sides of the window can be wiped by rotation; and the worm rod and the worm wheel have the self-locking property so that people do not need to worry about the rotation of the window when people wipe the window.

The invention relates to a gripping device (10) which is used for gripping and / or keeping a preferably vertical article (11) such as a bottle (12), a can, a container and the like at a contact section (15) of a peripheral side face of the article. The device is provided with at least three gripping tongue-shaped members (22) which roundly surround the contact section (15) at roughly the same height, the gripping tongue-shaped members are suspended on a retaining frame (20) of the device (10) in a pivoted and / or elastic manner, and the gripping tongue-shaped members are also supported on the retaining frame while inwardly pointing to one another. By passing the device (10) through the neck part section of the article (11) and thrusting the device along the longitudinal extending direction parallel to the article (11) , the gripping tongue-shaped members are upward pressed apart in an inclined manner against the elastic reset force and are respectively arranged at angle positions relative to the retaining frame (20), and end faces (21) of the gripping tongue-shaped members and / or side edges are supported relative to the contact section (15) of the article in a shape cooperation and / or force cooperation manner,

The invention relates to the technical field of medical equipment, in particular to an ampoule bottle dispensing system. The ampoule bottle dispensing system comprises a storage module used for assembling and conveying a plurality of ampoule bottles; a bottle cutting device which is used for marking and cutting the plurality of ampoule bottles on the storage module at the same time; a disinfection component which is used for disinfecting the cutting parts, namely the bottlenecks, of the ampoule bottles; a rotating device which is used for fixing the storage module and changing dispensing stations; a bottle breaking device which comprises a plurality of push heads connected in series, wherein the push heads correspond to the ampoule bottles on the storage module one by one, and the plurality of push heads rotate and reciprocate together through a driving mechanism and are used for impacting the ampoule bottles and breaking off bottle heads of the ampoule bottles; and a medicine dispensing device which is used for sucking the liquid medicine in the broken ampoule bottles into an infusion bag. According to the ampoule bottle dispensing system, broken ampoule bottles can be continuously replaced among different dispensing procedures through the rotating device, the bottle necks of a plurality of ampoule bottles can be marked and cut at the same time at a time, the automation degree is high, and the dispensing efficiency is greatly improved.

The invention discloses a box carrying clamp. The box carrying clamp is characterized by comprising a handle, an upper shell, an upper ratchet wheel, an upper cover, a reset spring, a lower ratchet wheel, a lower shell, a push rod, a main spring, a transverse rod, a left clamping assembly and a right clamping assembly. According to the box carrying clamp, through a ratchet wheel mechanism and a connecting rod mechanism, conversion from vertical displacement to horizontal displacement is achieved, and through the ingenious design of the ratchet wheel mechanism, the whole mechanism has self-locking performance; moreover, through the design, during carrying, the weight of goods is mainly borne on the shells of the clamp, thus the internal movement mechanism is stressed little, and the size and weight of the internal mechanism are reduced; meanwhile, the ratchet wheel mechanism can well adapt to repetition in the carrying process, the using frequency is high, the connecting rod mechanism is compact in structure, mature and simple, parts are easily machined and conveniently replaced, and the economical performance and reliability are greatly improved.

The invention relates to a tool, in particular to a multifunctional hand tool; a shovel plate and a chopper of the hand tool are fixedly connected to form a tool head; an operation location hole and a tool head rotating shaft hole are arranged on the tool head; the font part of a grab handle is provided with a U-shaped slot for the chopper to be horizontally hidden, the rotating shaft hole and a pin roll hole; the invention is also provided with the rotating shaft hole used for mounting a spanner; the tool head is articulated with the grab handle by a rotating shaft in the rotating shaft hole; a location pin roll is arranged in the pin roll hole; the spanner is connected with the grab handle by the rotating shaft in the rotating shaft hole; the outside of the grab handle is provided with a protective hood. The invention fixedly connects the chopper and the shovel plate to form the tool head; the tool head is connected with the grab handle by the rotating shaft; simultaneously, the front part of the grab handle is provided with the U-shaped slot, the chopper is horizontally hidden in the U-shaped slot and is located by the pin roll and bolts. The chopper and the shovel plate are connected by combining the rotating shaft and have multiple functions of shoveling, chopping, sawing, hacking, cutting, scraping, unclenching and digging, etc. The tool of the invention is suited to be used in agricultural planting, garden usage, project construction, geological exploration, field stud and field rescue, etc.

The invention relates to the field of metro shield construction, in particular to a self-locking precast lining segment waterproof connector structure and a working method thereof. The self-locking precast lining segment waterproof connector structure comprises a precast lining segment waterproof connector structure body and a self-locking bolt matched with the connector structure body. Protrudingheads are arranged at the positions, located on the left side and the rear side of a lining segment, of the precast lining segment waterproof connector structure body. Sunken openings matched with the protruding heads are formed in the positions, located on the front side and the right side of the lining segment, of the precast lining segment waterproof connector structure body. The protruding heads and the sunken openings are spliced in an inserted mode. Waterproof elastic sealing cushions with inverted-tooth structures at the ends are arranged in the sunken openings of the precast lining segment waterproof connector structure body. The upper side and the lower side of each protruding head are provided with inverted-hook structures. Inverted hooks on the upper side and the lower side ofeach inserted protruding head can be engaged with inverted teeth of each waterproof elastic sealing cushion, so that the structure has the self-locking characteristic. The self-locking bolt is provided with screws of a self-locking device, nut loosening can be effectively prevented, and the self-locking function is achieved. In the long-time using process, the protruding heads and the waterproof elastic sealing cushions in the sunken openings keep a tight extruding state, so that stability and durability of long-term waterproof are ensured.

A bearing system for a wind turbine rotor comprises a double row tapered roller bearing (5) in O-arrangement, wherein the double row tapered roller bearing (5) comprises an inner ring (7), a circumferential row of tapered rollers (9) supported on the inner ring (7), and a floating inner rib (14), a driving device (26) as well as an removable interlocking device (17 - 24), wherein the floating inner rib (14) can be axially moved by the driving device (26) to a predetermined position so as to abut on each large roller end (11) facing axially outwards in order to apply a corresponding preload on each tapered roller (9), and rigidly coupled to the inner ring (7) by means of the interlocking device (17 - 24).

The invention belongs to the technical field of railway vehicle equipment and relates to a sleeper power-driven lifting device for going to bed and getting out of bed. The sleeper power-driven lifting device comprises a stand column, a handle, a pedal device, a control device and a drive motor. A vertical lead screw is arranged in a guiding sliding groove in the stand column. The output end of the driving motor is connected with the lead screw, the handle is fixedly connected with a first lead screw nut, and the first lead screw nut is arranged on the lead screw in a sleeving mode. The pedal device is fixedly connected with a second lead screw nut, and the second lead screw nut is arranged on the lead screw in a sleeving mode and located below the first lead screw nut. The handle and the pedal device are arranged on the same side of the stand column. The control device comprises a control switch and a limiting switch. The control switch is arranged on the handle, and the limiting switch is arranged on the stand column. The control switch and the limiting switch are electrically connected with the driving motor. The sleeper power-driven lifting device is simple in structure and high in practicality and stability. The pedal device and the handle synchronously ascends and descends, a passenger can go to bed and get out of bed conveniently, fall accidents are avoided, and time and labor are saved when the passenger goes to bed and gets out of bed.

The invention relates to the technical field of mobile communication and discloses an antenna phase shift system, an antenna and a driving device. The antenna phase shift system comprises a voltage output device, the driving device, a sliding bar and a phase shifter. The driving device comprises a stator, a centering force application component and a gear rotor, wherein the stator comprises a resonator arranged in an overlaid mode and a piezoelectric element electrically connected with the voltage output device, the gear rotor is located between the resonator and the centering force application component and is coaxial with the centering force application component, the centering force application component is connected to the gear rotor in an abutting mode, and the resonator generates ultrasonic vibration and drives the gear rotor to rotate. The sliding bar is provided with a rack part meshed with the gear rotor. A moving component of the phase shifter is connected with the sliding bar. The antenna phase shift system is simple in structure and small in occupied space, the applicability of the antenna phase shift system is effectively improved, and the working reliability of the antenna is improved as well.

The invention discloses a latch mechanism, a lock body and application to kitchen equipment, and belongs to the field of locks. A lock body buckle of the latch mechanism consists of a base and a latch; the base is used for installation and fixation; the top of a substrate of the latch is connected with a contactor; the top surface and at least one side surface of the contactor are aslant arranged;a clamping port is formed in the bottom surface of the contactor; a lock body rod comprises a lock rod fixed base, and a lock rod shaft mounted between two support legs of the lock rod fixed base; during clamping, the lock rod shaft extrudes the top surface of the contactor, and the lock body buckle or the lock body rod can be deflected to return, so that the lock rod shaft is clamped into the clamping port; the lock body buckle or the lock body rod is rotated to enable the lock rod shaft to deviate from the clamping port along the side inclined surface of the contactor; and the structure canbe combined with a handle to apply to the kitchen equipment. The lock body is more convenient to lock and unlock, can meet safety demands, and can guarantee better tightness when being applied to a steaming cabinet.

The invention provides a regulating mechanism realizing continuous and wide-range adjustment on the dip angle of a table board and a learning table using the regulating mechanism. The regulating mechanism comprises a connecting part, a trapezoidal screw, a first rolling bearing with a box, a second rolling bearing with a box, a trapezoidal nut slider and a hand crank, wherein the upper end of theconnecting part is hinged to the back side of the table board, and the lower end of the connecting part is hinged to the trapezoidal nut slider; a first end of the trapezoidal screw and the first rolling bearing with the box are in transition fit, and the part, close to the second end, of the trapezoidal screw and the second rolling bearing with the box are in transition fit; the first rolling bearing with the box and the second rolling bearing with the box are fixedly connected with a table board fixing rack; and the hand crank is arranged in the second end of the trapezoidal screw. For the regulating mechanism and the learning table, the trapezoidal screw and the trapezoidal nut slider are in screwing match, a self-locking effect is achieved, the self-locking is steady and reliable, theadditional locking and unlocking components and parts are not needed, the learning table with the design is simple in structure, and easy and labor-saving to operate, more important, the dip angle adjustment is smooth and steady, as well as continuous, and the range is large. The adjustment on the dip angle of the table board can reach 90 degrees, and continuous adjustment within 0-90 degrees canbe realized.