73results about How to "The transmission mechanism is simple" patented technology

A drive member attached to the output shaft of a DC motor placed on a shutter base board includes a drive pin connected to the arm of a shutter blade within a blade chamber for driving the shutter blade to open and close an exposure opening with the reciprocal rotation of the DC motor. A brake member rotatably attached to the shutter base board and having a frictional force applied thereto by a spring washer brakes the rotation of the drive member when a bent portion is pushed by the drive pin to rotate.

The invention discloses a cam type quick grabbing under-actuated robot hand device, and belongs to the technical field of robot hands. The device mainly comprises a palm, at least two fingers, a main shaft, a motor, a speed reducer, a first bevel gear, a second bevel gear, an incomplete groove cam, a movable plate, a sensor for detecting whether the fingers are opened in place or not, a sensor for detecting whether an object is in place or not, a control module and the like, wherein each finger is a tendon rope-torsion spring type multi-joint finger. The device has a function of automatically and quickly grabbing the object, and a grabbing process comprises four processes of energy storage opening of the fingers, detection of whether the fingers are opened in place or not, detection of whether the object is in place or not and instantaneous grabbing releasing; the device can be used for realizing quick grabbing; the object can be automatically grabbed after being detected to be in place; objects with different shapes and sizes can be adaptively grabbed; the device is compact in structure, the palm is large in size, and a grabbing space is large; the device is stable and accurate in transmission and high in transmission efficiency; and a plurality of joints of a plurality of fingers can be driven by only one motor, and the appearance and the actions of a human hand can be simulated by the device; and the device can be used for an anthropomorphic robot.

A multi-mode base station and a method for sending / receiving signals thereof are provided. In the base station, each base-band single-board is connected to a corresponding radio frequency (RF) unit through a multi-mode exchange bus, and the base-band single-boards of different modes are intermixed by using the compatibility of the exchange bus with in-phase / quadrature (IQ) data of various modes. Synchronization information, such as frame numbers required by various modes, forms a synchronization burst through multiplexed framing. Meanwhile, by using the same system clock, the synchronization burst and system clock are transmitted to the base-band single-boards of various modes through a set of synchronization clock buses. The main control and transmission functions are uniformly provided for each base-band single-board in the base station by a shared common module. The filling and synchronization of wireless IQ data of various modes are realized according to common-multiple relation mapping.

The invention relates to a spinning technology of a semi continuous high speed spinning machine, belongs to the technical field of semi continuous spinning machine spinning, and comprises the steps of glue supplying, filament forming, spinning and winding, wherein the spinning is accomplished by a spinning device which comprises one or more spinning rollers arranged on an operating surface corresponding to the spinning surface, the filament winds around the spinning roller, the drafting, solidification and deacidification of the spinning step are accomplished under the rotation of the spinning roller. According to the spinning technology provided by the invention, the problems that the spinning speed can not be accelerated and dual attention to the working efficiency and the product quality cannot be given, caused by the insufficiency reaction of the semi continuous high speed spinning machine filament, are solved, the changing of the spinning roller distribution direction enables the spinning machine to accelerate spinning speed and reserve the structure of other parts of the conventional device, the filament to walk farther, and the reaction of the filament and the acid bath to be more efficient, both the working efficiency and the product quality are considered.

A self propelling vehicle capable of propagating through a solid medium, comprising two or more rotors, arranged in tandem, and means for rotating the rotors, each rotor being formed as a hollow rotational body with an external helicoidal flighting, configured to engage surrounding solid medium, wherein the flightings of any pair of adjacent rotors follow helicoids of mutually opposite senses and the means for rotating are operative to rotate the adjacent rotors in mutually opposite senses.

The invention discloses a multi-degree-of-freedom magnetic levitation spherical motor. The magnetic levitation spherical motor comprises a stator structure and a mover structure, wherein a plurality of permanent magnets are uniformly distributed on the spherical surface of the mover structure; the stator structure comprises magnetic levitation coils and thrust coils; a plurality of magnetic levitation coils are arranged on a levitation coil framework in a certain array form; the circumferential thrust coils are uniformly and radially distributed on the circumference of an incomplete spherical surface; and the top thrust coils are uniformly distributed in parallel and vertically on the top of the incomplete spherical surface. Through design of a novel form of structure, the mover can rotate in any direction in a plane. The structure is simple. The magnetic levitation spherical motor has a very good application prospect in multi-degree-of-freedom equipment.

A radio frequency (RF) wireless steering wheel is disclosed, which is suitable for an automobile. The radio frequency wireless steering wheel comprises: a steering wheel body having an operation panel; a plurality of keys set in the operation panel; a radio frequency signal transmitting installed in the steering wheel body, wherein the radio frequency signal transmitting module can be triggered by the keys module; and a radio frequency signal receiving module installed within the automobile and used to receive the signal transmitted from the radio frequency signal transmitting module, wherein the radio frequency signal receiving module is electrically connected to electronic devices of the automobile. Therefore, the electronic devices of the automobile can be controlled respectively through the keys, the radio frequency signal transmitting module and the radio frequency signal receiving module.

The invention relates to a multi-degree-of-freedom underactuated manipulator which comprises a palm, a thumb, a middle finger, an index finger, a ring finger, a little finger, a rope guide wheel, spring leaves, a drive tendon and the like. Each of the thumb, the index finger, the middle finger, the ring finger, the little finger and the like comprises three knuckles, all knuckles are connected through the spring leaves, and the spring leaves and cushion blocks are fixed on the back of each knuckle through bolts. All knuckles are driven by the motor, and the knuckles are driven to bend through tendon and the rope guide wheel. The multi-degree-of-freedom underactuated manipulator provided by the invention has the advantages of high level personification, strong adaptability, light weight, small volume, compact structure, less drive elements, multiply free degree, easiness in control, simplilcity in processing and the like.

The invention discloses a wall climbing robot for cleaning the surfaces of ship hulls. The wall climbing robot comprises a middle mounting frame and two groups of driving wheel modules. The two groups of driving wheel modules are arranged on two sides of the wall climbing robot, and a cleaning operation module is mounted on the upper portion of the middle of the rear of the mounting frame; a universal wheel module is mounted on the lower portion of the middle of the rear of the mounting frame; each group of driving wheel modules comprises two parallel support frames, a group of driving modules, a group of tension wheel modules, a group of magnetic suction modules and a plurality of groups of auxiliary support wheels, the support frames of each group of driving wheel modules are arranged on two sides of the group of driving wheel modules, and the multiple groups of auxiliary support wheels of each group of driving wheel modules are arranged on two sides of the group of driving wheel modules; a connecting shaft is arranged between the two support frames on the two sides of each group of driving wheel modules; the corresponding driving modules, the corresponding tension wheel modules, the corresponding magnetic suction modules and the corresponding auxiliary support wheels are arranged on the two support frames of each group of driving wheel modules. The wall climbing robot has the advantages that the wall climbing robot is high in applicability, flexibility and obstacle crossing performance, and good effects of cleaning the surfaces of the ship hulls can be realized by the wall climbing robot; the wall climbing robot in a structural mode is provided with the two groups of driving wheel modules and the single group of universal wheel modules and accordingly can be flexibly and controllably operated; the wall climbing robot is in such a transmission form that a wheel rotary shaft and a tension wheel can be simultaneously driven by a synchronous belt wheel to rotate, accordingly, the wall climbing robot is simple in structure and high in transmission efficiency, and good transmission effects can be realized.

The invention discloses a jacking linkage type sixteen-wheel four-way shuttle vehicle. The jacking linkage type sixteen-wheel four-way shuttle vehicle comprises a supporting frame, a transverse travelling driving mechanism, a longitudinal travelling driving mechanism and a cable-stayed reversing and jacking mechanism; the transverse travelling driving mechanism comprises a transverse driving wheel, a first transverse driven wheel, a second transverse driven wheel and a third transverse driven wheel; the longitudinal travelling driving mechanism comprises a first longitudinal driving wheel, a second longitudinal driving wheel, a first longitudinal driven wheel and a first longitudinal driven wheel; and the reversing and jacking mechanism comprises a jacking transverse plate, a first cable-stayed jacking sliding block and a second cable-stayed jacking sliding block, a ball shaft sleeve is movably arranged in a jacking shaft hole, cable-stayed jacking columns are arranged on the front side and the rear side of the ball shaft sleeve, and the cable-stayed jacking sliding blocks at the two ends are connected through a jacking shaft. According to the jacking linkage type sixteen-wheel four-way shuttle vehicle, the structural design of the sixteen-wheel two-way travelling trolley is adopted, and the loading capacity and the ridge passing capacity of the trolley are greatly improved; and the structural design is compact, the cost is reduced, and the space is saved.

The invention relates to a spherical motor, which comprises an annular base 1, a spherical rotor 2, rotor connectors 6, a long circular arc stator 3, secondary long circular arc stators 4, short circular arc stators 5 and resistance reducing balls 7, wherein the long circular arc stator 3, the secondary long circular arc stators 4 and the short circular arc stators 5 are connected with the annular base 1 through the rotor connectors 6 so as to form an integral whole. The invention belongs to the technical field of motors. The spherical motor, which is different from an existing arc-type stator motor and capable of realizing random-direction turning of the secondary rotor within 360 degrees, is provided through designing a new type of structure based on fundamental principles of an arc-type linear induction motor. The spherical motor can be applied to various occasions of universal moving, for example, the spherical motor acts as a vehicle wheel so as to enable a vehicle to travel easily in a 360-degree mode, and the vehicle wheel structure is simplified.

The invention relates to a motor. A spherical driving structure in a novel form is adopted, a nonmetallic annular wheel of a spherical motor designed by a student in the Swiss Federal Institute of Technology is replaced, and moving and rotating by spherical 360 degrees in any direction are achieved. The motor comprises a sphere, a lower anti-friction sphere, lower supporting arms, fixing arms, driving bodies, a supporting platform, an upper supporting arm, an upper anti-friction sphere and the like. The lower supporting arms, the fixing arms, the driving bodies, the upper supporting arm and the supporting platform are connected together, integrated and arranged above a spherical rotor. The anti-friction spheres are arranged on the upper semi-sphere and the lower semi-sphere respectively and perform the function of reducing friction and preventing the spherical rotor from disengaging from the driving bodies.

The invention provides a track maize harvesting machine. The machine comprises an engine, a working device, a chassis assembly, an operation chamber and a hydraulic system; the working device comprises cutting platform systems, a cluster bin, and a fruit cluster conveyor arranged between the cutting platform systems and the cluster bin; the cutting system comprises a spike cutting device; the chassis assembly comprises a transmission device, a turning braking device and a track travelling system; the track travelling system comprises a frame and a travelling device; a cutting platform bracket for mounting the cutting platform systems is arranged at the front part of the frame; a straightening mechanism is arranged at the lower end of the cutting platform bracket; the working device and the operation chamber are fixed to the left and right on a connecting plate at the front part of the frame; the cluster bin is arranged at the tail part of the frame; the hydraulic system comprises a hydraulic valve, a hydraulic oil tank, a turning oil cylinder, a cutting platform oil cylinder, a hydraulic pump, a radiator and a travelling motor. The machine is under full-hydraulic transmission and high in working adaptability; a plurality of rows of cutting platform systems can be combined in different forms according to the actual working conditions, so that the working efficiency is high.

The invention relates to a digitized discrete cell driving combing machine which comprises a lap roller, a cylinder, a nipper shaft, a brush, a nose tail separation roller, an extracting roller, a draft roller and a can coiler that are respectively driven by an independent motor, and the combing machine is properly matched with a driving controller. A shaft on the cylinder is provided with a signal generator, and the signal generator and the driving controller are both connected with a control device of the combing machine by cables. The combined machine body can effectively reduce the vibration of combing caused by same-phase motion when in the process of high speed production; as the lap roller, the cylinder, the nipper shaft, a brush, the nose tail separation roller, the extracting roller, the draft roller and the can coiler are respectively driven by the independent motor, a transmission mechanism of the combing machine is greatly simplified, so that the design and maintenance are convenient; what is more, the technique motion parameters of all the working parts can be independently adjusted, thus greatly improving the spinnability of the combing machine and being beneficial to improving the quality of combed sliver.

A wave-wheel washer applicable for frequency conversion technology comprises an inner barrel, an outer barrel and a wave wheel in the inner and outer barrel, a dewatering shaft connected with the inner barrel and a main body of the washer with a clutch having a drainage dragger. The washer is characterized in that the washer comprises additionally a frequency conversion motor, and the clutch is a synchronous clutch, the washing shaft is a cylindrical part whose upper end and lower part are square. In the upper and lower casing of the clutch, from down to up sequentially are a dewatering friction plate assembly fixed on the washing shaft, movable friction plates fixed respectively on the upper and lower part of the slide sleeve of the dewatering shaft, a pressure spring and an adjusting nut looped on the dewatering shaft; the washing friction plate assembly fixed on the joining site of the upper and lower casing is put against the bottom of the slide sleeve together with the roller on the shift fork assembly connected with the drainage dragger. The invention can realize the optimal combination of different washing, rinsing and dewatering, so as to save power, water, wash clean, achieve low wear and high dewatering rate, and the invention has greatly simplified the manufacturing process and reduced the cost.

The invention discloses a multi-way valve control device, a forklift with the same and an assembling method. The multi-way valve control device comprises a multi-way valve and a control rod, and further comprises a fixed supporting shaft, a slide block connected with the supporting shaft in a rotating mode, and a connecting rod connected with the slide block in a rotating mode. The control rod is connected with the slide block. The connecting rod is connected with a piston rod of the multi-way valve in a rotating mode. According to the multi-way valve control device of the forklift, the fixed supporting shaft and the control rod are adopted, the slide block and the connecting rod are connected with the piston rod of the multi-way valve, and therefore a formed transmission mechanism is simple, the freedom degree of the transmission mechanism is 1, the determined motion is achieved, the accurate transmission route is ensured, and the control device is small in size, small in occupied space and convenient to arrange.

A power transmission system for an aircraft is disclosed. A driving motor having a driving axle is provided inside an aircraft. The driving axle has a gear part and a wheel part. They drive a gear disk and a belt, respectively, to rotate the rotor and the tail rotor. The invention simplifies the power transmission structure of the aircraft.

An electric motor direct-drive dead-weight balanced type beam-pumping unit comprises a rope hanger, a horsehead, a walking beam, a balance weight, a brake disc, a brake device, an electric motor, a crank, a connecting rod, a rear support, a braking connecting rod, a brake handle, a variable-frequency cabinet, a hinge, a base and a front support. The rope hanger is hung on the horsehead at the front end of the walking beam. The front support on the base and the middle of the walking beam are connected through a middle bearing. The bottom face of the rear portion of the walking beam is provided with the electric motor. The crank is arranged on the electric motor through a shaft and connected with the connecting rod through a crank and pin assembly. The other end of the connecting rod is connected with the hinge fixed to the base. The balance weight is arranged at the rear portion of the walking beam. The brake disc is arranged at the tail portion of the walking beam. The brake device outside the brake disc is supported by the rear support on the base. The brake device is controlled by the brake handle through the braking connecting rod. By means of the magnetic-coupling low-speed electric motor, the requirement for low-speed high-power output is met, and a transmission mechanism of the beam-pumping unit is simplified; the dead-weight balanced type beam-pumping unit with the electric motor is simple in structure, stable in working performance and capable of saving energy sources and reducing maintenance expenses.

The invention discloses a cable-stayed jacking reversing type sixteen-wheel four-way shuttle vehicle. The cable-stayed jacking reversing type sixteen-wheel four-way shuttle vehicle comprises a supporting frame, a transverse walking driving mechanism, a longitudinal walking driving mechanism and a cable-stayed reversing and jacking mechanism. The transverse walking driving mechanism comprises a transverse driving wheel, a first transverse driven wheel, a second transverse driven wheel and a third transverse driven wheel; the longitudinal walking driving mechanism comprises a first longitudinaldriving wheel, a second longitudinal driving wheel, a first longitudinal driven wheel and a first longitudinal driven wheel; and the reversing and jacking mechanism comprises a jacking transverse plate and cable-stayed jacking sliding blocks, a ball shaft sleeve is movably arranged in a jacking shaft hole, cable-stayed jacking shafts are arranged on the front side and the rear side of the ball shaft sleeve, and the cable-stayed jacking sliding blocks at the two ends are connected through a ball screw. According to the cable-stayed jacking reversing type sixteen-wheel four-way shuttle vehicle,the structural design of a sixteen-wheel two-way walking trolley is adopted, and the loading capacity and the ridge passing capacity of the trolley are greatly improved; and the structural design is compact, the cost is reduced, and the space is saved.

The invention discloses a pure electric two-speed differential device power assembly for an electric vehicle. A motor drives a first differential device; a first differential device casing is providedwith an input gear; the input gear transmits an output gear in an engaged way; the output gear is arranged in a second differential device casing; the non-gear side of one differential device is coaxially provided with a braking shaft; a clutch is also installed and connected through a self casing; a clutch disc is arranged at the braking shaft in a sheathing way; the clutch disc can generate axial reciprocating motion along the braking shaft; the clutch disc and the clutch are in mutual and clutch transmission. On the basis of the clutch function of the clutch, a brake is matched and selected for closing and / or releasing the differential device; various driving modes such as high-speed gear, low-speed gear, parking or neutral gear are realized; the requirements of precise and compact transmission mechanism, great gear ratio, high efficiency, small vibration noise, no power intermittent gear shifting, small loss, ultralow cost and ultrahigh reliability are realized; the cost performance of a vehicle is shown; the pure electric two-speed differential device power assembly is applicable to various electric vehicles.

The invention discloses a Z-shaped non-avoidance stereo garage, which comprises a bracket, a horizontal conveying device positioned on the top surface of the bracket, an upper bottom plate positionedon the horizontal conveying device, a rotating device positioned on the upper bottom plate, a car carrying plate positioned on the rotating device, anti-sliding devices arranged at two ends of the carcarrying plate and rotatably connected with the two ends of the car carrying plate, a lifting devices symmetrically arranged at two sides of the bracket and rotatably connected with the rear end of the upper bottom plate, a leveling and lifting device rotatably connected with the middle part of the upper bottom plate and used for maintaining the horizontality of the upper bottom plate, and an auxiliary driving device and control device used to maintain the horizontal assistant force of the upper bottom plate during the later stage of the horizontal displacement. The bottoms of the lifting devices and leveling and driving device are rotatably connected with the outer side of the front end of the bracket; an angle sensor is arranged on the lifting device; and a horizontal position sensor isarranged on the upper bottom plate. The device has the advantages of simple structure, stable operation, less occupied space and convenient maintenance and repair.

A drive member attached to the output shaft of a DC motor placed on a shutter base board includes a drive pin connected to the arm of a shutter blade within a blade chamber for driving the shutter blade to open and close an exposure opening with the reciprocal rotation of the DC motor. A brake member rotatably attached to the shutter base board and having a frictional force applied thereto by a spring washer brakes the rotation of the drive member when a bent portion is pushed by the drive pin to rotate.

The invention discloses a shield cutter head driving device with a cam ring motor applied. The driving device comprises a power box, wherein a transmission structure and a cam motor device are arranged in the power box, the cam motor device is connected with a shield cutter head in a transmission mode through the transmission structure, the power box is fixedly connected with a shield shell body, multiple rows of hydraulic oil cylinders are arranged on the cam ring motor device in the radial direction, a plurality of hydraulic oil cylinders are distributed in each row in the circumferential direction, a cam ring is driven to rotate through reciprocating motions of the hydraulic oil cylinders, and therefore the shield cutter head is driven to rotate through the transmission structure. The shield cutter head driving device with the cam ring motor has the advantages of being simple in manufacturing technology, simple in transmission structure and capable of greatly reducing the cost of the driving device of a domestic shield machine cutter head.

A transmission for an industrial vehicle has an input shaft, first and second transmission mechanisms, a clutch mechanism, a rotation direction switching gear train, a speed change gear train, and an output shaft. The first and second transmission mechanisms change the speed among a plurality of speeds of rotation from the input shaft. The clutch mechanism is disposed on the input side of the transmission mechanisms and includes forward and reverse clutches and first and second snap clutches for selecting which of the first and second transmission mechanisms will receive rotational input from the engine. The rotation direction switching gear train inputs rotations for forward and reverse travel to the forward and reverse clutches. The speed change gear train inputs to the first snap clutch and the second snap clutch the output from the forward clutch and the reverse clutch.

A transmission mechanism for a dynamic ornament includes a housing including a base, a motor fixed to the base with a motor shaft extending therefrom, a transmission seat assembly fixed to the base and including a pair of first seats connected to the base, and a transmission device connected to the transmission seat assembly and including a sliding set and a gear set. The sliding set includes a pair of mating portions slidable along the first seats, a pair of connecting portions connecting with the mating portions, a pair of eccentrics and a transmission shaft connected between the eccentrics and rotatably connected to the transmission seat assembly. A mating hole is defined in each of the mating portions for rotatably receiving the eccentric therein. The gear set connects between the motor and the transmission shaft of the sliding set thereby driving the transmission shaft to rotate.

A multi-mode base station and a method for sending / receiving signals thereof are provided. In the base station, each base-band single-board is connected to a corresponding radio frequency (RF) unit through a multi-mode exchange bus, and the base-band single-boards of different modes are intermixed by using the compatibility of the exchange bus with in-phase / quadrature (IQ) data of various modes. Synchronization information, such as frame numbers required by various modes, forms a synchronization burst through multiplexed framing. Meanwhile, by using the same system clock, the synchronization burst and system clock are transmitted to the base-band single-boards of various modes through a set of synchronization clock buses. The main control and transmission functions are uniformly provided for each base-band single-board in the base station by a shared common module. The filling and synchronization of wireless IQ data of various modes are realized according to common-multiple relation mapping.

The present invention relates to an electronic pole changing-based induction motor control system and a control method thereof. Such induction motor control system comprises an induction motor, an inverter and a DC power supply. The inverter is connected with the motor and the DC power supply respectively, for converting a direct current supplied by the DC power supply to an alternating current supplied to the motor. The motor comprises N three-phase windings (11, 12; 31, 32). The inverter comprises N inversion driving units (21, 22; 41, 42) and at least one control unit. Each inversion driving unit is connected with one three-phase winding. The control unit controls the inversion driving unit to generate a current of the three-phase winding connected thereto, and frequency, amplitude and phase of the current can be controlled by the control unit. The control unit alters current directions or phase angles of at least part of the three-phase windings according to a synchronous rotational speed of the motor, making N three-phase windings form at least two pole-pair numbers. The induction motor control system enhances the low-speed torque and broadens the speed governing operation range, thereby enhancing the control accuracy and operation efficiency, and simplifying a peripheral transmission mechanism.

The invention discloses a longitudinal electromagnetic linkage type sixteen-wheel four-way shuttle vehicle. The shuttle vehicle comprises a supporting frame, a transverse walking driving mechanism, alongitudinal walking driving mechanism, and clutch type jacking reversing mechanisms. The transverse walking driving mechanism comprises transverse driving wheels, first transverse driven wheels, second transverse driven wheels, and third transverse driven wheels; the longitudinal walking driving mechanism comprises first longitudinal driving wheels, first longitudinal driven wheels, second longitudinal driven wheels, and second longitudinal driving wheels; and each of the clutch type jacking reversing mechanisms comprises jacking transverse plates, cable-stayed jacking sliding blocks, and electromagnetic clutches, and the cable-stayed jacking sliding blocks are separated from or combined with a longitudinal transmission shaft through the electromagnetic clutches. According to the longitudinal electromagnetic linkage type sixteen-wheel four-way shuttle vehicle, the structural design of a sixteen-wheel two-way walking trolley is adopted, and the loading capacity and the ridge passing capacity of the trolley are improved; the jacking reversing mechanisms and the longitudinal walking driving mechanism share one driving motor; and the structural design is novel and compact, the cost isreduced, and the space is saved.

The invention discloses a hydraulic drive limited-rotating-angle straight rotating actuator. An oil port A penetrates through a piston rod (4) to be communicated with the left end of a hollow piston head (6), an oil port B penetrates through a fixing rod (7) to be communicated with the right end of the hollow piston head, the piston rod and the fixing rod are respectively connected at the two ends of a distributing rod (5) through the hollow piston head, the distributing rod connected with the piston rod at the two ends is assembled in a cavity of the hollow piston head assembled in an output barrel body (3), the piston rod movably assembled at the two ends of the distributing rod is connected with the hollow piston head through an external thread on a rod head, the screwing directions of internal threads at the two ends of the cavity of the hollow piston head are opposite, the internal threads are respectively screwed with the piston rod by a helix lead angle of more than 80 degrees to form a screw motion pair, the screwing directions of the two ends of the piston rod and helix lead angles of the two ends of the piston rod are the same, wherein one end of the hollow piston head and the piston rod form a screw motion pair, the other end of the hollow piston head and the fixing rod form a screw motion pair, the piston rod is fixed to the output barrel body, and the output barrel body outputs a torque. According to the hydraulic drive limited-rotating-angle straight rotating actuator, a transmission mechanism is simple, and the actuation time is short.

The invention discloses a skylight component of a data center machine room cold passage. The skylight component comprises a cabinet top supporting member, a base frame and a rotating frame, the base frame comprises long frame edges and short frame edges, a magnetic lock is arranged on one long frame edge, the rotating frame is connected with one short frame edge through a rotating shaft which is fixedly connected to the rotating frame, and a shaft connecting member is fixedly connected on the rotating shaft; an electric extensible rod and a slider are arranged on the short frame edge, the slider comprises a bottom plate and a side plate arranged on the bottom plate, the shaft connecting member is positioned in a sliding cavity formed by the side plate and the bottom plate, and the side plate is positioned between the shaft connecting member and an extensible end of the electric extensible rod; when the extensible end of the electric extensible rod pushes the side plate of the slider, and the side plate pushes the shaft connecting member and enables the rotating frame to rotate in a direction close to the magnetic lock. The skylight component has the advantages of being simple in structure, low in manufacturing cost, capable of adjusting opening angle of a skylight, quick to open and good in mechanical performance.