175results about How to "Limit range of movement" patented technology

To improve a one-way clutch incorporated into an engine of a motorcycle to eliminate the need for switching a gear to a neutral position in the case of push walk of vehicle. A one-way clutch 60 comprises a clutch inner wheel 62, a clutch outer wheel 65 coaxial with the clutch inner wheel 62, a cam surface 62b formed on the inner periphery of the clutch outer wheel 65, a roller (rolling member) 64 arranged between the clutch inner wheel 62 and the clutch outer wheel 65 and rolling on the cam surface 62b, and a compression spring (biasing member) 66 biasing in a direction of narrowing the roller 64 by pressure of the clutch inner wheel 62 and the clutch outer wheel 65 along the circumferential direction. The clutch is characterized by comprising an centrifugal weight (restricting member) 63 which restricts, in low-speed rotation, the movement of the roller 64 in the biasing direction within the range where the roller 64 can freely roll, and releases the restriction in the case of a predetermined number of rotation or more.

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.

The invention discloses a shockproof base for a machine tool. The shockproof base comprises a mounting table, a buffer plate and a base. Four supporting columns are fixedly arranged at the top of thebase, and the tops of the supporting columns are fixedly connected with the bottom of the buffer plate; a plurality of bosses are fixedly arranged at the bottom of the mounting table, and a pluralityof boss grooves matched with the bosses are formed in the top of the buffer plate; and the bottom ends of the bosses are embedded into the boss grooves and fixedly connected with one ends of shock absorption springs, and the other ends of the shock absorption springs are fixedly connected with the bottom ends of the boss grooves. According to the shockproof base for the machine tool, by arrangingthe mounting table, mounting of the machine tool is facilitated; by arranging the shock absorption springs, shock of the machine tool can be reduced, and product machining is facilitated; by arrangingairbags, on the one hand, the levelness of the machine tool can be adjusted, and on the other hand, a certain buffer effect can be achieved; and by arranging first limiting rings and second limitingrings, the moving range of upper supporting column bodies is limited, and the upper supporting column bodies are prevented from being disengaged from lower supporting column bodies.

The invention provides a removable connector for hermitically connecting different pipes. A matched bulge is fixed on the peripheral surface of a matched joint connection pipe; a pair of unlocking limiting parts is fixed on a locking joint connection pipe; a locking part comprises a locking arm, an elastic arm and an unlocking arm; one end of the locking arm is fixedly connected with the end parts of the elastic arm and the unlocking arm, and the other end of the locking arm is a free end fixed with a locking bulge; the locking bulge and the matched bulge are matched to lock the connection between the locking joint connection pipe and the matched joint connection pipe; the end part, which is back onto the locking arm, of the elastic arm is fixedly connected with the locking joint connection pipe; the unlocking arm comprises an unlocking arm main body; one end of the unlocking arm main body is fixedly connected with the elastic arm and the locking arm; the other end of the unlocking arm main body is a free end; the unlocking limiting parts are positioned on one side, which is close to the unlocking arm, of the elastic arm; and when the unlocking arm main body is pressed, the locking arm is open to release the matching between the locking bulge and the matched bulge, and the unlocking limiting parts press against the unlocking arm main body.

The invention provides a position error compensation method of a magnetic-core-free current sensor. The position error compensation method of the magnetic-core-free current sensor comprises the following steps: uniformly mounting n magnetic field sensors without magnetic cores on a circular printing circuit board, wherein the sensing directions of the n magnetic field sensors are the same as an ampere circuital direction; outputs of the n magnetic field sensors are separately connected with an input of an adding device; the adding device superposes and summarizes output voltages of the sensors, and an output of the adding device is connected with a filter; and after the number n of the magnetic field sensors is determined, the proportional relation between the circular inner diameter of the circular printing circuit board and the diameter of a carrier conductor is designed through a solver, therefore, the movement range of a current-carrying conductor is limited, and requirements for measurement errors are met.

The invention provides a network-based information display device, which includes a cleaning sponge, a drain pipe, a delivery pump, a water tank, a connecting plate, a bearing block, a screw rod, a servo motor, a device main body, a lighting lamp, a support rod, a storage battery and a thermoelectric power generation sheet , the left end of the servo motor is provided with a screw rod, a bearing block is installed on the screw rod, a connecting plate is installed at the front end of the bearing block, a drain pipe is installed at the rear end of the connecting plate, a cleaning sponge is installed at the rear end of the drain pipe, and a delivery pump is installed at the lower end of the water tank. This design reduces the labor intensity of the staff. The thermoelectric power generation sheet is installed at the rear end of the main body of the display device. A battery is installed at the right end of the main body of the display device. The heat generated when the main body of the display device works is converted into electric energy. The invention is convenient to use, easy to operate, good in stability, high in reliability, and reduces labor intensity.

The invention discloses novel casting equipment. The novel casting equipment comprises a base and a support column; a cavity is formed in the inner side of the support column; a motor is fixedly arranged at the bottom end in the cavity; a lead screw is fixedly arranged at an output end of the motor; nuts are in threaded connection to the surface of the lead screw; one sides of the two nuts are fixedly connected with two ends of an electric guide rail; a first through hole is formed in the bottom of a casting barrel; a high-temperature resisting electromagnetic valve is fixedly arranged in thefirst through hole; an extension rod groove is formed in the middle part of the base; and an extension rod is fixedly arranged in the extension rod groove. In the novel casting equipment, through arrangement of an electric rotating shaft, the casting barrel is driven to rotate to conveniently adjust the direction; through arrangement of the motor, the casting barrel can be driven to move up and down by the lead screw and the nuts; through arrangement of the electric guide rail, the casting barrel can be driven to move left and right; and through arrangement of the extension rod and a movable block, molded matters are conveniently ejected out.

The invention discloses a bidirectional throttle valve and relates to the technical field of throttle valves. The bidirectional throttle valve comprises a valve tube, and a first valve body and a second valve body arranged in the valve tube, wherein the valve tube is provided with a first interface and a second interface; the first valve body is provided with a first throttling channel; the second valve body is provided with a second throttling channel; and an intermediate communication channel is arranged between the first valve body and the second valve body in the valve tube. The bidirectional throttle valve is characterized in that a first diversion channel is arranged in the valve tube and between the first interface and the intermediate communication channel, a second diversion channel is arranged between the second interface and the intermediate communication channel, and the first valve body and the second valve body move synchronously in the axial direction of the valve tube. The bidirectional throttle valve can effectively realize the bidirectional flow control of the throttle valve.

The invention provides an intelligent massage bed. The massage bed comprises a first telescopic rod, a second motor, a second telescopic rod, a connection plate, a vibration motor, a massage plate, anelectric cylinder, a fixed plate, a fixed frame and a bed board; the second motor is mounted at the upper end of the first telescopic rod, the second telescopic rod is mounted at the upper end of thesecond motor, and the connection plate is arranged at the right end of the second telescopic rod; the vibration motor is mounted at the lower end of the connection plate, and the massage plate is mounted at the lower end of the vibration motor in a matched mode. The intelligent massage bed massages all parts on the body of a user, the bed board is mounted at the rear end of the fixed frame and extends into the fixed frame, the fixed plate is arranged in the fixed frame and mounted at the lower end of the bed board, and the electric cylinder is arranged at the lower end of the fixed frame, penetrates through the fixed frame and is connected with the fixed plate; the intelligent massage bed facilitates installation and disassembling of a massage mechanism and an assembling mechanism, is convenient to use and operate and good in stability, improves the massage effect and enlarges the application range.

The invention belongs to the technical field of geological exploration, and particularly relates to a hydrogeological exploration underground water level observation device which comprises a base and a U-shaped clamping sleeve arranged on the upper surface of the base and further comprises a water level observation mechanism arranged on the surface of the U-shaped clamping sleeve. The water level observation mechanism comprises a wire spool, a rotating shaft, a cloth tape, a connecting shaft, a limiting disc, a buoyancy block and a connecting rod, and the rotating shaft is rotationally connected to the surface of the U-shaped clamping sleeve; the depth of the underground water level can be measured, the convenience of the device in the using process is improved, the alarm can give out a prompt sound when the connecting shaft reaches the underground water level position, and therefore the effect of prompting workers is achieved, and the sensitivity of the device in the using process is improved. The stability of the connecting shaft in the process of driving the cloth tape to move is guaranteed, and the phenomenon that the connecting shaft is clamped on the inner wall of the observation well due to the fact that the cloth tape shakes when the connecting shaft moves in the observation well is avoided.

The invention discloses an unmanned aerial vehicle with an aerial photogrammetry function. The unmanned aerial vehicle comprises a fixed seat, wherein first cavities are formed inside the fixed seat;first bearings are fixedly embedded into the inner bottom wall of each first cavity; the inner top wall of each first cavity is fixedly connected with a slowdown motor; the output ends of the slowdownmotors pass through the first bearings and extend to the lower side of the fixed seat; the outer surfaces of the output ends of the slowdown motors are fixedly connected with the inner rings of the first bearings; the output ends of the slowdown motor are fixedly connected with rotating shafts. According to the unmanned aerial vehicle with the aerial photogrammetry function, positive and negativerotating motors are arranged, and a threaded pipe, a threaded rod, a first gear, a second gear and a second fixing block are used in a matching way, so that the inclination angle of a fixed plate canbe adjusted effectively through movement of the threaded rod, the photography range of the unmanned aerial vehicle is enlarged greatly, the unmanned aerial vehicle is more convenient to use, and theproblem of inconvenience in using the existing unmanned aerial vehicle with the aerial photogrammetry function is solved.

The invention discloses a winding device used for spinning silk yarn bundling, comprising a fixing base; a first cavity is arranged in the left end of the fixing base; a sliding hole is formed in theinner top wall of the first cavity; the interior of the first cavity is fixedly connected with a threaded rod; the outer surface of the threaded rod is in threaded connection with a threaded pipe matching with the threaded rod. The winding device used for spinning silk yarn bundling can fix a winding reel effectively through arranging a neck and matching with a fixture block, so that the conditionof random movement of the winding reel during the using process can be prevented; a positive and negative rotation motor can drive the threaded pipe to rotate effectively by arranging the positive and negative rotation motor and matching with the threaded rod, the threaded pipe, a first gear and a second gear; the threaded pipe can drive a fixing rod to move through the threaded connection with the threaded rod; the winding device is beneficial to replacing the winding reel quickly; the device is conveniently used; and the device provided by the invention solves the problem that the current winding device used for spinning silk yarn bundling is not convenient to use.

The invention discloses a resistance type crane safety device capable of preventing aslant pulling and hanging. The safety device comprises a guiding rod, a fixing rod and a horizontally arranged sliding rod. A long hole is formed in the middle of the sliding rod in the length direction of the sliding rod, and the bottom end of the guiding rod is connected into the long hole in a sliding mode; a sliding hole is formed in one end of the sliding rod, and the other end of the sliding rod is fixedly connected with a resistance changing disc; a connection wire is connected to the center of an inner resistance disc; the bottom of the fixing rod is bent and then stretches to the position below the inner resistance disc, the bottom end of the fixing rod is bent upwards and then is provided with a big-end-down conical portion, a sliding contact is formed at the tip end of the conical portion, and the resistance changing disc is supported by the sliding contact in a sliding mode. When a hanging hook or other lifting appliances are located at normal hoisting positions, the center of the resistance changing disc makes contact with the sliding contact. The resistance type crane safety device is simple in structure and convenient to manufacture, mount and use; the safety device additionally mounted on an existing lifting device can prevent the aslant pulling and hanging phenomenon, and safe operation of a crane is guaranteed.

The invention discloses a steel tube clamping device based on buildings. The steel tube clamping device comprises a fixing base, wherein a first cavity is formed inside the fixing base, sliding holesare formed in the inner top wall of the first cavity, a threaded rod is fixedly connected to the interior of the first cavity, two symmetric fixing rods are placed inside the first cavity, the top ends of the two fixing rods penetrate through the two sliding holes correspondingly and extend to the position above the inner fixing base, and the upper surface of each fixing rod is fixedly connected with a circular-ring-shaped clamping plate. According to the steel tube clamping device based on the buildings, forward and reverse rotation motors are arranged, and a first gear, a second gear, the threaded rod, threaded tubes and the clamping plates are coordinated for use so that the forward and reverse rotation motors can effectively drive the two fixing rods to move, the two clamping plates are driven to be close to each other or are far away from each other by the movement of the two fixing rods, then clamping of steel tubes is realized, clamping of the steel tubes is firmer, and the problem that clamping of the round steel tubes by an existing steel tube clamping device of the buildings is not firm is solved.

The invention discloses an industrial thin film wrapping device convenient to use. The industrial thin film wrapping device convenient to use comprises a fixing seat, wherein a first fixing block is fixedly connected to the right side of the upper surface of the fixing seat; a first fixing plate is fixedly hinged to the top end of the first fixing block through a first pin shaft; a first bearing is fixedly inlaid to the upper part of the left side surface of the first fixing plate; and a first threaded rod is fixedly connected to an inner ring of the first bearing. According to the industrialthin film wrapping device convenient to use, the first pin shaft is arranged, and the first fixing block is cooperatively used, so that the first fixing plate can be effectively rotated; an electric push rod is arranged, and a second fixing block, a second pin shaft, a third fixing block and a third pin shaft are cooperatively used, so that the first fixing plate can be effectively rotated, and the position of the first threaded rod is further controlled; and a second bearing is arranged, so that the stability of an output end of a motor can be effectively maintained, and the output end of themotor is prevented from oscillating randomly during a rotating process.

The invention provides a sampling detection device for an LED energy saving lamp production line, comprising a servo motor, a bearing seat, a screw rod, a support frame, a right transverse plate, a clamping plate, a cylinder, a left transverse plate, a light brightness detector, a metal ring, a support, a box, a battery and a travel switch. The screw rod is arranged at the right end of the servo motor. The bearing seat is arranged on the screw rod. The support frame is assembled at the lower end of the bearing seat. The left transverse plate and the right transverse plate are symmetrically installed at the lower end of the support frame. The cylinder is arranged at the right end of the left transverse plate. The clamping plate is arranged at the right end of the cylinder. Because of the design, an LED energy saving lamp can be clamped randomly. The support is arranged at the inner bottom end of the box. The metal ring is installed inside the support. The light brightness detector is arranged on the inner left wall of the box. The battery is assembled at the right end of the box. The travel switch is arranged at the right end of the battery. The design improves the reliability of detection. The sampling detection device is convenient to use and easy to operate, reduces the labor intensity, and has high reliability.

The invention discloses a height-adjustable medical examination instrument fixing device, comprising a device body; the device body consists of a lower end base, an upper end base, a strut and a loading platform; a damping spring is arranged between the lower end base and the upper end base, the upper side of the strut is provided with an adjusting rod, and the upper side of the adjusting rod is fixedly connected with the loading platform; a battery is arranged on one side of the bottom end of the loading platform, and two sides of the loading platform are provided with moving plates, the moving plates are connected to each other by a telescopic rod, and the upper sides of the moving plates are respectively provided with a clamping plate, the bottom ends of the clamping plates are rotatably connected with rotating shafts, and the rotating shafts are located at one ends of the upper sides of the moving plates; the bottom ends of the clamping plates are provided with springs, the other ends of the springs are located inside grooves, and the grooves are located on the upper sides of the movable plates. According to the height-adjustable medical examination instrument fixing device provided by the invention, the length of the strut can be adjusted by the adjusting rod according to the height of the instrument and the height of the user, so that the height of the device body is raised for a user to observe conveniently.

The invention discloses an embankment impact detection and warning device and aims to solve the technical problem that an existing embankment impact detection device is not enough flexible and convenient to operate. The embankment impact detection and warning device comprises a support mechanism and a detection mechanism, wherein the support mechanism comprises support legs and fixed parts, the fixed parts are arranged at the tops of the support legs and are fixedly connected with the support legs, each fixed part comprises a sliding rail, fixed holes are uniformly formed in the sliding rail,the detection mechanism comprises a box body, and a telescopic rod is arranged at a lower surface of the box body and is matched with the fixed holes. The embankment impact detection and warning device has the beneficial effects of high accuracy, safety and reliability and is convenient to use.

The invention discloses an industrial automatic conveying device comprising a first fixing plate. A groove is formed in the bottom face of the first fixing plate, a first bearing is fixedly embedded into the left side wall of the groove, and a positive and reverse rotation motor is fixedly connected to the left side face of the first fixing plate. The output end of thepositive and reverse rotationmotor penetrates through the first bearing and extends into the groove, the outer surface of the output end of the positive and reverse rotation motor is fixedly connected with the inner circle of the first bearing, and the output end of the positive and reverse rotation motor is fixedly connected with a threaded rod. According to the industrial automatic conveying device, by arranging a slidingblock, the stability of a threaded pipe ca be kept at a limited degree, and the threaded pipe is prevented from rotating along with rotation of the threaded rod; by arranging the positive and reverserotation motor and using an electric pushing rod, a sliding rod, a sliding ring, the threaded pipe, the threaded rod and a clamping plate cooperatively, clamping and conveying of materials can be effectively achieved, thus the industrial automatic conveying device is used more conveniently, and the problem that an existing industrial automatic conveying device is used inconveniently is solved.

A feeding pipe of automatic feeder comprises a groove bracket, a U-shaped material pipe and a pushing rod, wherein the U-shaped material pipe is positioned in the groove bracket, the pushing rod is located in the U-shaped material pipe, the pushing rod is fixedly connected with a chain fixing block, and the groove bracket is in clearance fit with the U-shaped material pipe. According to the feeding pipe of the automatic feeder, groove steel serving as the bracket and a U-shaped rubber groove serving as the feeding pipe are combined to achieve purposes of reducing vibrations and noises, protecting materials and device and improving production environments, and the U-shaped rubber groove can be replaced periodically and used conveniently.

The invention discloses a clamping device for cutting a multilayer filter cloth. The clamping device comprises a fixed seat, two symmetrical cavities are formed in the fixed seat, and a first slidinghole is formed in the inner top wall of each first cavity; second cavities are formed in the left and right ends of the fixed seat correspondingly; a first bearing is fixedly inlaid on the inner sidewall, close to each first cavity, of the corresponding second cavity; and forward and reverse rotating motors are fixedly connected to the inner side walls, away from each other, of the two second cavities. According to the clamping device for cutting the multilayer filter cloth, by arranging the forward and reverse rotating motors and by cooperatively using of threaded rods, threaded pipes, powerful springs, electric pushing rods and a second fixing plate, the threaded rods can be effectively driven to rotate through rotation of the forward and reverse rotating motors, the threaded rods rotate to drive connecting rods to move, meanwhile, the electric pushing rods drive height adjusting of the second fixing plate, and thus the multilayer filter cloth is clamped; and the problem that an existing clamping device for cutting a multilayer filter cloth is inconvenient to use is solved.