52results about How to "Limit the range of rotation" patented technology

The invention relates to a two-motor drive modular joint. According to the two-motor drive modular joint, an output shaft is rotationally connected with a shell and fixedly connected with an output gear; the output shaft comprises a through hole extending in the axial direction; the shell comprises a penetrating hole corresponding to the through hole, and the through hole and the penetrating holeare used for storing a line; the output shaft further comprises a radial channel which cooperates with a zero-bit detection module to determine the zero bit; a first gear and a second gear are engagedwith the output gear and are free of interference; a first servo motor is connected with the first gear and a first motor encoder; and a second servo motor is connected with the second gear and a second motor encoder. The two-motor drive modular joint can eliminate the gap between the output gear and a drive device, so that transmission is more precise, and the joint can still run in a gapless mode even when the gears are abraded. The zero-bit detection module is used for determining the zero bit of the output shaft. Through cooperation of the penetrating hole and the through hole, various cables can be arranged inside the joint, and thus the joint is simple and compact as a whole.

The invention discloses hinge structure used in LCD etc electronic equipment. It includes one support, one base, and one pin joint device. The pin joint device includes one pivot, one elastic piece, one blocking piece, and one fixing piece. The support is set one pivot hole and one gap. The base is set one deforming hole. The pivot includes one fixed part and one pivot rotating part. The elastic piece includes the first and second fixed ends which are respectively fixed on the support and the base. The blocking piece is set at the gap of the base. The pivot penetrates the pivot hole, deforming hole, and fixing piece which restricts the support, base, and elastic piece together with the pivot fixed part. The hinge structure of the invention can freely locate, and smoothly rotate.

The invention discloses a rotor folding and unfolding device for a vertical take-off and landing compounding layout unmanned aerial vehicle. Besides all components of a conventional fixed wing unmanned aerial vehicle, the rotor folding and unfolding device further comprises rotors, rotor arms, connecting rods, a linear motor, a guide rod, flow baffles and springs. One end of each rotor arm is installed on a rotary shaft in a rotor cabin on the side face of a vehicle body, and the other end of each rotor arm is provided with a direct-current brushless motor and the corresponding rotor. When the rotors do not need to be used by the compounding unmanned aerial vehicle, the linear motor installed at the middle portion of the vehicle body is controlled to pull the guide rod and the connecting rods to move, the rotor arms are rotated and retract back into the corresponding rotor cabins, and the flow baffles are closed; and when the rotors need to be used by the compounding unmanned aerial vehicle, the linear motor is controlled, so that the rotor arms are rotated and extend to the outer side of the vehicle body. The unmanned aerial vehicle with the rotor folding and unfolding device has the functions of conventional fixed wings and further has the functions of vertical take-off and landing, longitudinal and transverse maneuvering and the like. In a fixed wing mode, the rotors retract into the rotor cabins, the flow baffles are closed, and the aerodynamic characteristic influence caused by a rotor structure is avoided.

A lens barrel is provided and includes a barrel main body; lens frames supported by the barrel main body so as to be movable in the direction of an optical axis; a focus ring and a zoom ring which are rotatably supported by the barrel main body and move the lens frames in the direction of the optical axis; and a diaphragm device attached to the barrel main body. The focus ring and the zoom ring come into contact with a rotation regulatory section of the diaphragm device, whereby rotation of the focus ring and rotation of the zoom ring are regulated.

The invention discloses a road feel simulator and belongs to the technical field of automobiles. The road feel simulator comprises a limiting part and a steering wheel end input shaft; the limiting part comprises a steering shaft, a sliding nut, a first limiting piece and a second limiting piece; one end of the steering shaft is connected with the steering wheel end input shaft so that the steering wheel end input shaft and the steering shaft can rotate at the same time; the sliding nut is in threaded connection with the steering shaft, and the sliding nut and the steering shaft form a lead screw nut pair; the first limiting piece is arranged on the steering shaft and located on one side of the sliding nut; the second limiting piece is arranged on the steering shaft and located on the other side of the sliding nut; when the steering shaft rotates around the axis of the steering shaft, the sliding nut can linearly move along the steering shaft to abut against the first limiting piece orthe second limiting piece so as to limit the rotating angle of the steering shaft. The rotation angle of the steering wheel can be limited, and the situation that rotation of the steering wheel exceeds the range of a rotation angle sensor is avoided.

The invention discloses a rotary multiple-gear switch which has a simple structure, a small volume and low cost and can position rapidly and correctly by one-way rotation. The rotary multiple-gear switch comprises a shell, a switch rotor (3) and a rotary gear adjustment device; the rotary gear adjustment device is connected with both the switch rotor (3) and the shell; the switch rotor (3) is used to adjust the gear when rotating relative to the shell; the rotary gear adjustment device is directly arranged in the shell without being connected with an external circuit board, thus the occupied space is greatly reduced; the inner side wall of the shell is provided with an annular groove (60); and the lower end of the switch rotor (3) is provided with a through hole (30), a compression spring (8) and a rolling ball (9), wherein the compression spring (8) and the rolling ball (9) are arranged in the through hole (30), and the rolling ball (9) is elastically compressed in the annular groove (60) under the action of the compression spring (8).

The invention relates to a focal plane shutter structure which comprises a motor, a motor base, a spring, a shutter fixing plate, an upper blade and a lower blade. The motor base is fixed to the motor, the motor is provided with a motor shaft extending out of the motor and capable of rotating, the motor base is provided with a through hole matched with the motor shaft in structure and position, and the motor shaft can penetrate through the through hole. The shutter fixing plate is fixedly connected with the end, away from the motor, of the motor shaft, the motor base is located between the shutter fixing plate and the motor, and the motor shaft rotates and can drive the shutter fixing plate to rotate. The upper blade is arranged on the lower blade in a stacked mode, and the upper blade and the lower blade are fixed to the upper surface of the shutter fixing plate through a snap spring and a screw. A boss is arranged on the motor base, the spring is arranged on the motor shaft in a sleeved and surrounding mode, one end of the spring is fixed to the motor base, and the other end of the spring is clamped on the boss. The focal plane shutter structure is driven by the motor, the structure of the double blades is adopted, the size of the shutter driving device is greatly reduced, the shutter stability is improved, and miniaturization of electronic imaging equipment is ensured.

The invention discloses an electronic lock clutch structure which comprises a shell. A driving unit, a handle connector, a lock connector, a limit mechanism and a positioning pin are arranged in the shell, a handle connector can rotate in the shell, the lock connector can rotate in the handle connector, the rotating range of the handle connector can be limited by the limit mechanism, the handle connector and the lock connector are integrally clamped and fixed by the positioning pin, a lock hole is formed in the shell, the handle connector is provided with a mounting hole, an outer clamping hole and a connecting rod, the outer clamping hole is communicated with the mounting hole, the connecting rod penetrates the lock hole, the lock connector is positioned in the mounting hole, an inner clamping hole and a square hole are formed in the lock connector, the driving unit can push the positioning pin to insert into the outer clamping hole and the inner clamping hole, the limit mechanism comprises two clamping pieces and two claming blocks, the clamping pieces can vertically move in the shell, the claming blocks are arranged on the handle connector, the clamping pieces can be clamped with the corresponding clamping blocks when moving to a clamping and stopping position, so that rotation of the handle connector is limited, a reset spring is arranged in the outer clamping hole, and thepositioning pin can reset by the aid of the reset spring.

The invention discloses a mechanical limiting exoskeleton robot joint. The joint comprises a driving mechanism, a speed reducing mechanism, an executing mechanism and a feedback mechanism, and the exoskeleton robot joint can be driven to rotate at one degree of freedom. The driving mechanism is composed of a motor base, a motor, a rotating shaft, a rear end cover, a bearing, a stator check ring and a rotor check ring. The speed reducing mechanism is composed of a speed reducer, an output flange and a front end cover. The executing mechanism is composed of an upper connecting plate and a lowerconnecting plate. The feedback mechanism is composed of an absolute value encoder and a relative value encoder. A fan-shaped groove with the angle ranging from -6 degrees to 120 degrees is formed in the middle of the front end cover, a boss is designed for the output flange, the boss of the output flange is located in the fan-shaped groove of the front end cover after assembly and can move along the fan-shaped groove, therefore the relative rotation relation between the upper connecting plate and the lower connecting plate is converted into relative rotation between the front end cover and theoutput flange, and mechanical limiting is achieved. Hard limiting of the joint rotation angle is achieved through a mechanical structure, and the working safety and reliability of a robot are improved.

The invention discloses a waste textile treatment device. The waste textile treatment device comprises a crushing box, a feeding mechanism, a crushing mechanism, a screening mechanism and a recyclingmechanism. The crushing mechanism comprises two engaged crushing rollers and a driving component, wherein the crushing rollers are arranged in the crushing box, and the driving component drives the crushing rollers to rotate. The screening mechanism is arranged below the crushing rollers and comprises a winnowing component, a separation assembly and a collection assembly, wherein the separation assembly is used for separating textiles, and the collection assembly is used for collecting the textiles. By means of the waste textile treatment device, foreign matter in the textiles obtained after crushing can be separated out through the winnowing component, and subsequent recycling treatment of the waste textiles can be conducted conveniently.

The invention relates to a comb handling trolley and a synchronous aligning device thereof. When a vehicle is handled by using the handling trolley, the synchronous aligning device controls a first front comb frame and second front comb frame in a front comb assembly to be opened synchronously, and simultaneously controls a first rear comb frame and second rear comb frame in a rear comb assembly to be opened synchronously, when the front comb assembly and the rear comb assembly are opened, a catch wheel device can gradually approach the inner sides of wheels, after the catch wheel device is incontact with the inner sides of the wheels, force is applied to the inner sides of the wheels, so that the vehicle is aligned by taking the center line of the synchronous aligning device as standard;carrying of the aligned vehicle can not only ensure parking neat but also ensure that the center of gravity in the handling process coincides with the center of the comb assemblies to ensure the stability and safety of the handling process; the comb assemblies can also be opened to different widths, thereby being suitable for aligning of vehicles with different widths.

The invention provides a fish scale removing device, and belongs to the technical field of fish processing. The device comprises a base, a clamping rod, a movable rod, a first driving mechanism, a scaling mechanism and a first motor, a first supporting plate and a second supporting plate are fixedly arranged on the base in parallel, and a first circular plate and a second circular plate are coaxially and rotationally arranged on the opposite side faces of the first supporting plate and the second supporting plate through a first rotating shaft and a second rotating shaft correspondingly; the clamping mechanism can horizontally fix the fish between the first circular plate and the second circular plate, two third supporting plates are fixedly arranged on the base in parallel, the movable rod is horizontally arranged between the two third supporting plates in a sliding mode, and the first driving mechanism can drive the movable rod to horizontally slide back and forth. The scale scraping mechanism can scrape scales on the upper surfaces of fishes, the first motor is fixedly arranged on the second supporting plate through the first horizontal plate, and the first motor is in transmission connection with the second rotating shaft. The device can quickly remove scales on the surface of fish, is simple to operate, and saves time and labor.

A floating net-shaped supporting device based on photovoltaic power generation, disclosed by the present invention, comprises a floating box, the outer end of the floating box is provided with a splicing mechanism, the splicing mechanism comprises a connecting rod, a rolling ball, a mounting rack, a guide rod, a sliding block, a spring, a threaded cylinder, a screw, a supporting rod, a connecting plate and a limiting rod, the outer end of the floating box is sleeved with the connecting rod, and a rolling ball is movably embedded in one end of the connecting rod. Through cooperation of a threaded cylinder and a screw rod, the multiple floating boxes can be assembled conveniently, the position of the mounting frame can be moved conveniently through the rolling ball, and meanwhile when the floating boxes float on the sea, the outer end of the sliding block guide rod slides to be matched with the spring to limit the moving position of the sliding block, each buoyancy tank is adjusted along with the fluctuation of the horizontal plane, so that the photovoltaic panels are kept stable on the buoyancy tanks, the top surfaces of the buoyancy tanks are always higher than the horizontal plane, the photovoltaic modules are not easy to be damaged by seawater, and sundries on the horizontal plane are not easy to float above the buoyancy tanks to form accumulation.

The invention belongs to the technical field of tools for riding instead of walk. The invention relates to a roller skate, in particular to a foldable roller skate. The foldable roller skate includesa pedal and a supporting wheel arranged on one side of the pedal. The pedal can be overturned and folded around the supporting wheel; a plurality of small wheels are rotationally arranged below the pedal; the supporting wheel comprises a fixing frame and a large wheel rotationally arranged on the fixing frame. At least three groups of rollers are arranged on the fixing frame; the rollers are arranged at intervals along the inner ring of the large wheel and abut against the inner ring of the large wheel so as to make the large wheel rotationally arranged on the fixing frame; the pedal is provided with a foot binding belt used for fixing the foot / shoe of a user, the side, close to the pedal, of the fixing frame is fixedly provided with a shank binding belt, and a brake device used for braking the roller skate is arranged below the pedal. The foldable roller skate is convenient to store and transport, good in stability, convenient to disassemble and maintain and long in service life.

The invention discloses an easy-to-control lifter specially used for mobile phone racks, which is composed of a lifting body block, a cam switch, an elastic pad, and a central shaft of a switch; The horizontal rod support protrusion on the side not only satisfies the horizontal support function of the horizontal support rod, but also limits the rotation range of the horizontal support rod, so that it cannot rotate to the lower left corner, and the cam switch is cleverly designed. The diameter of the center side of the opening part Smaller than the diameter of the center side of the locking part, so that the easy-control lifter can slide up and down on the column rod; when the raised part squeezes the elastic pad to move closer to the column rod, and uses the elasticity of the elastic pad to make the easy-control lifter lock in time, thereby adjusting The height of the mobile phone clip is an important part of the mobile lifting and easy-to-control mobile phone holder.

The invention relates to an auxiliary device of a pneumatic impact wrench. The auxiliary device comprises a base plate, wheels, a cylindrical stand column, a rotating shaft, a bearing assembly, an upper limiting block, a lower limiting block, a suspension arm, a suspension ring and a load stretchable rod. The cylindrical stand column is vertically installed on the base plate, the rotating shaft is installed in the cylindrical stand column in a rotatable mode through the bearing assembly, an upper limiting opening is formed in the upper end of the cylindrical stand column, a lower limiting opening is formed in the lower end of the cylindrical stand column, the upper limiting block is connected with the upper end of the rotating shaft and extends out from the upper limiting opening, the lower limiting block is connected with the lower end of the rotating shaft and extends out from the lower limiting opening, the upper end of the suspension arm is hinged to the upper limiting block, the suspension ring is installed at the lower end of the suspension arm, the lower end of the load stretchable rod is hinged to the lower limiting block, and the upper end of the load stretchable rod is hinged to the middle of the suspension arm. The suspension ring at the lower end of the suspension arm can freely move in the horizontal direction and the vertical direction, when a nut is disassembled and assembled, labor is greatly saved, the auxiliary device is convenient to use, the labor intensity is greatly reduced, fatigue can be avoided, the locking degree is guaranteed, and the traffic safety is further guaranteed.

The invention discloses a light three-translation robot, which belongs to the technical field of industrial robots, and comprises a rotating arm, a big arm, a forearm and a wrist part, a split wrist part structure is adopted, the wrist part is divided into a forearm auxiliary rod and a wrist piece, and a first hinge parallelogram mechanism is formed by a first driving connecting rod, a first driven connecting rod, a first mounting vertical plate and a posture keeping rod; a second hinge parallelogram mechanism is formed by a second driving connecting rod, a second driven connecting rod, the first driving connecting rod and the section, away from the wrist part, of a forearm connecting rod; a third parallel hinge parallelogram mechanism is formed by the posture keeping rod, the forearm connecting rod, a forearm driven rod and the forearm auxiliary rod, the main body of a long rod in the three hinge parallelogram mechanisms is composed of a light carbon fiber tube, and the axis of a connecting flange at the middle tail end of the wrist part is parallel to the axis of a robot base. Rod pieces forming a palletizing robot are light in weight, and the wrist structure is a separated wrist structure, so that the wrist movement is more flexible.

The invention relates to the technical field of medical treatment, in particular to an anesthesia ventilation catheter for fiberoptic bronchoscopy. The anesthesia ventilation catheter comprises an anesthesia ventilation soft tube; an air intake tube and a air return tube, two A through holes are arranged on outside of the anesthesia ventilation soft tube, and the air inlet tube and the air return tube are fixed to inner sides of the A through holes; a support box, one side of the support box is provided with a safety expansion buffer device; and a box cover plate, the box cover plate is fixed to one side of the opening of the support box, two B through holes are formed in one side of the box cover plate, and the air inlet tube and the air return tube are fixed to inner sides of the B through holes. By arranging the air inlet tube, the air return tube, the support box, the box cover plate, a partition plate, a U-shaped supporting frame, a flow control pipe, a flow control ball, a B threaded rod, a U-shaped support frame, an I-shaped frame, a U-shaped on-off frame, a pressing-off head, a plugging pad, an L-shaped frame, an expansion box, a buffer plate, an adjusting plate and a spring, the anesthesia ventilation catheter has functions of flow control, accurate adjustment, use in multiple modes, safe buffering and the like.

The invention discloses automatic water boiling cooking processing equipment, comprising a box body, wherein a corner chain wheel set, a no-base supporting chain wheel set, a tail lower chain wheel set and a tail upper chain wheel set are set in the box body. The same conveying chain is in transmission connection on the corner chain wheel set, the no-base supporting chain wheel set, the tail lowerchain wheel set and the tail upper chain wheel set. Chain track assemblies are mounted on two side inner walls of the box body. The chain track assemblies are in slide connection with the conveying chain. A tension device is set in the box body. The tension device matches with the chain. A gear motor support is fixedly mounted on a side inner wall of the box body. The equipment is rational in design and high in practicability and is convenient for control. Sausages are hanged on the conveying chain for cyclic cooking operation. The sausages are cooked in sequence. An operator can take out thecooked sausages in sequence. The equipment is convenient for the operator to feed and unload. The sausage processing efficiency is improved.

The invention discloses a lighting equipment installation device for an ancient building, and relates to the technical field of ancient building lighting equipment. The lighting equipment installationdevice comprises an installation mechanism for being connected with a roof and a lamp body fixedly arranged on the installation mechanism, the installation mechanism comprises an installation assembly, and the installation assembly comprises clamping pieces for being connected with a protruding part in a clamped mode; the clamping pieces are arranged in the extending direction of the protruding part at intervals, every two adjacent clamping pieces are hinged to each other through a transverse hinge shaft, and the transverse hinge shafts are arranged in the distribution direction of the different protruding parts of tiles of the roof; and the installation mechanism further comprises a connecting part detachably connected to the installation assembly, and the lamp body is fixedly arranged on the connecting part. The lighting equipment installation device has the effect of improving the adaptability of the lighting equipment installation device to the roof of the ancient building.

The invention discloses a high-safety vehicle-mounted water cup structure. The high-safety vehicle-mounted water cup structure comprises a cup body, wherein a water inlet and a suction pipe hole are arranged on the cup body; a pressure sensing assembly, a suction pipe assembly and a cross bar are arranged on the cup body; the cross bar is connected with a support assembly; a first limiting assembly is arranged on the support assembly; the pressure sensing assembly comprises a rubber sleeve and a plurality of pressure sensors; the suction pipe assembly comprises a suction pipe, a sliding rod and a spring; the cross bar is fixedly connected with the cup body; the support assembly comprises a support column and a support rod; and the first limiting assembly comprises a first connecting rod, amotor, a second connecting rod, a rubber pressing block and a limiting plate. According to the high-safety vehicle-mounted water cup structure, the structure is simple, the operation is convenient, water is directly drunk through the suction pipe, the cup cover does not need to be opened or covered back, the suction pipe is automatically retracted into the cup body after the water is pushed backto the cup body, namely the cup returns to the original position, and the sealing suction pipe hole is covered and sealed by the rubber pressing block, so that water splashing in the cup body is avoided, the trouble of water splashing is avoided, and the safety of driving water is effectively improved.

The invention discloses a vertical take-off and landing compound layout UAV rotor retractable device, in addition to the components of the conventional fixed-wing UAV, it also includes rotors, rotor arms, connecting rods, linear motors, guide rods, baffles and spring. One end of the rotor arm is installed on the rotating shaft in the rotor cabin on the side of the fuselage, and the other end of the rotor arm is installed with a DC brushless motor and rotor; The linear motor pulls the guide rod and the connecting rod to move, so that the rotor arm rotates and retracts into the rotor cabin, and the baffle is closed; when the composite UAV needs to use the rotor, the linear motor is controlled to rotate the rotor arm to extend out of the fuselage. In addition to the conventional fixed-wing function, the UAV of the present invention also has functions such as vertical take-off and landing, longitudinal and lateral maneuvering; in the fixed-wing mode, the rotor is retracted in the rotor cabin, and the baffle is closed, avoiding the rotor structure. The resulting aerodynamic effects.