282results about How to "Reduce the transmission link" patented technology

The invention relates to a simple precision displacement platform, which comprises a base, a vibration isolator, an internal hexagonal fastening screw, a linear guide rail, an internal hexagonal set screw, a micro-displacement work table, a piezoelectric actuator, a linear grating bar and a linear motor, wherein the displacement platform is a precision one-dimensional displacement platform. As the displacement platform is provided with the linear motor and the piezoelectric actuator, compared with a traditional ball screw mode, the displacement platform has the advantages that intermediate mechanical transmission links are greatly decreased, and the length of a transmission chain is reduced to be zero. The displacement platform is capable of realizing large-displacement rapid positioning and small-displacement precision effective output. Besides, the displacement platform has the advantages of simple structure, high response speed, high precision, high dynamic stiffness, short acceleration and deceleration process, quietness in movement, low noise, high efficiency and the like, and can be used for the field of precision measurement and precision machining.

The invention discloses a linear reciprocating motor. The linear reciprocating motor comprises a reciprocating screw rod (4) which is sleeved with a hollow shaft (2), a small round hole is formed in the side wall of the hollow shaft (2), a guide block (3) is placed in the small round hole of the hollow shaft and makes contact with a bidirectional sliding groove of the reciprocating screw rod (4), the hollow shaft (2) provided with the guide block (3) is sleeved with a rotor (1), and the rotor (1) is sleeved with a motor stator. According to the linear reciprocating motor, the guide block is arranged in the small round hole in the hollow shaft arranged outside the reciprocating screw rod in a sleeved mode, then the rotor is arranged uniformly, and after installation is finished, the hollow shaft rotates to drive the guide block to move in the reciprocating screw rod so that front and back linear reciprocating motion of the reciprocating screw rod can be achieved under the action of the guide block. Thus, the linear reciprocating motor can be applied to various occasions needing the reciprocating motion, the number of transmission links is reduced, mechanical efficiency is improved, production cost is reduced, and the linear reciprocating motor is simplified substantially.

The invention discloses a device and a method for rehabilitation training. The device comprises a pelvis mechanism unit, a stand column support mechanism unit, a treadmill unit, and a control unit. The stand column support mechanism unit is fixed on the treadmill unit. The pelvis mechanism unit is connected with the stand column support mechanism unit and can move axially along the stand column support mechanism unit. The pelvis mechanism unit comprises a first four-rod mechanism formed by a base, a first connecting rod, a second connecting rod, and a connecting box, and a second four-rod mechanism formed by a third connecting rod, a fourth connecting rod, a first supporting arm, and a second supporting arm. The first four-rod mechanism and the second four-rod mechanism are movably connected. A method for connecting a pelvis of a patient through the pelvis mechanism provides a weight reduction function. The pelvis structure has multiple degrees of freedom, and can swing with natural swing of a pelvis when a patient walks. Weight reduction supports on a pelvis position prevent pendulum effect caused by an overhanging weight reduction method, so that a body can naturally swing when walking.

A method for realizing GPS positioning of mobile terminal based on MPT-1327 trunking communication system comprises the following steps: 1) inserting a GPS module on a mobile terminal for obtaining the GPS information of present position; 2) re-decomposing the GPS information by terminal and packaging, eliminating the redundant data, adding transmission target address and self ID; and 3) transmitting the GPS information to the system with a short data transmission function of MPT-1327. The GPS data transmission has two modes of active transmission and passive transmission. The active transmission means to transmitting the position information of ration station by the radio station to the system through control channel through a mode of definite time or definite space under standby state, and also automatically transmitting the present position information of radio station to the system through traffic channel of trunking communication system under calling state. The passive transmission means to responding after the radio station receives the inquiry command of system and transmits the latest position information to the system.

The invention discloses a digital servo hydraulic cylinder mainly composed of a piston rod, a ball screw, a piston, a screw nut, a servo directional control valve core, a limiting block, an axial clearance compensator and a control motor. The piston rod is a hollow piston rod; and a rod cavity of the digital servo hydraulic cylinder is directly connected with high-pressure oil. A servo directional control valve where the servo directional control valve core is located is a three-position zero-opening valve, the servo directional control valve core and the ball screw are formed into an integer, and the ball screw extends into a center hole of the piston rod and is meshed with the screw nut in the center hole; the other end of the servo directional control valve core is connected with one end of the limiting block, the other end of the limiting block is connected with one end of the axial clearance compensator, and the other end of the axial clearance compensator is connected with a shaft of the control motor; and when rotating, the control motor drives the servo directional control valve core and the ball screw to rotate together. The digital servo hydraulic cylinder has the characteristics of high frequency response, high starting frequency, low unit power cost and the like.

The invention discloses a laser pitchometer for a ball-screw and a measuring method thereof. The laser pitchometer for the ball-screw comprises a main shaft case, an engine base, a damp mechanism, a tracking measurement mechanism, a tail bracket and a laser emission mechanism, wherein the main shaft case, the tail bracket and the laser emission mechanism are fixed on the engine base; the damp mechanism and the tracking measurement mechanism are sequentially arranged between the main shaft case and the tail bracket; the damp mechanism and the tracking measurement mechanism are matched with the engine base in a sliding manner through a sliding plate; and the laser emission mechanism is arranged outside the tail bracket. The invention can detect the precision condition of the thread pitch of the ball-screw, thereby ensuring the quality of the ball-screw.

The invention discloses an Internet identity authentication method which is mainly applied to the aspect of Internet identity authentication and provides a scheme which is high in safety, high in convenience and low in cost for the Internet, electronic commerce and the like. The Internet identity authentication method includes the steps that firstly, identity authentication is conducted by enabling a user to actively conduct calling and recording to compare user interface submit information so as to conduct algorithm matching; secondly, in the simple process, when identity authentication needs to be conducted by the user in the Internet using process, after a cell phone number of a called host is designated through an active calling website or system, the called host sends a caller ID to a website or system server, the user submits the cell phone number to be verified or other related information to be verified on a verification interface at the same time, and the server compares the number or the submitted related information inputted by the user with the number information from the called host within limited time such as one minute to conduct algorithm matching so that the identity can be verified. According to the technology, both the cell phone number and the fixed-line telephone number can be verified, and user incoming calls can not be answered in the verification process.

The invention provides a novel six-degree-of-freedom parallel platform, belongs to the technical field of movement organizations, and aims at solving the problems of a plurality of transmission links, low transmission accuracy and low structure rigidity in the prior art. The novel six-degree-of-freedom parallel platform comprises a fixed platform, a movable platform which is arranged coaxial and parallel to the fixed platform, and six linear driving assemblies which are arranged between the fixed platform and the movable platform, wherein two ends of each linear driving assembly are correspondingly connected with the lower end surface of the movable platform and the upper end surface of the fixed platform through spherical hinges; piezoelectric linear motors of the linear driving assemblies are fixed to motor fixing plates; output shafts pass through the motor fixing plates to be connected with ball spline axles through couplings; the ball spline axles and ball spline nuts form ball spline pairs; motor protecting housings sleeve the outer sides of piezoelectric linear motors; one end of each motor protecting housing is connected with the corresponding motor fixing plate, and the other end of each motor protecting housing is fixedly connected with an end cover; one end of a spline fixing housing sleeves the outer side of the corresponding ball spline nut and is fixedly connected with the corresponding ball spline nut, and the other end of the spline fixing housing is fixedly connected with the corresponding motor fixing plate.

The invention discloses a walking type self-balancing rotating workbench which is used for converting the supporting and rotating stations of a to-be-assembled product on a quick assembling production line. The walking type self-balancing rotating workbench comprises a loading frame, wherein walking wheels and supporting feet are arranged at the bottom of the loading frame; a supporting ring platform is arranged at the top of the loading frame; a main supporting module is arranged on the supporting ring platform; a rotating mounting platform is mounted on the main supporting module; a driving and transmitting module is arranged on the middle part of the loading frame; the upper end of the driving and transmitting module is connected with an auxiliary supporting module; the auxiliary supporting module is connected with a central hole of the rotating mounting platform, so that the auxiliary supporting module is driven to rotate around the center; a positioning and locking module is arranged on a lateral part of the loading frame; the positioning and locking module is matched with the bottom surface of the rotating mounting platform, so that the positioning, locking and unlocking on different rotating stations are controlled. The device is simple in structure, convenient in operation, high in safety and fit for the quick assembling of a large-size precise instrument having a long assembling period and needing to be tested and checked during an assembling process.

The invention provides a single phase permanent magnetic mechanism for a vacuum circuit breaker, which comprises an upper end cover, a lower end cover, a moveable iron core, an insulating tension rod, a closing coil, a permanent magnet, a conductive magnet, a contact spring and a breaking spring. The mechanism has fewer transmission links, small installation volume, small difference of accumulated motion, and small dispersity of action response time, and can accurate positioning of a phase angle of voltage or current at breaking time and closure time, thereby realizing synchronous closure.

The invention discloses an audio playing method. The audio playing method comprises the following steps: after a smart TV establishes a Bluetooth communication connection with an intelligent terminal,monitoring whether an audio data transmission instruction sent by the intelligent terminal is received; when the audio data transmission instruction sent by the intelligent terminal is received, creating a corresponding audio track, and monitoring whether corresponding audio data are received; when the corresponding audio data are received, outputting the audio data to a horn of the smart TV through the audio track for playing. The invention further discloses a smart TV and a computer readable storage medium. By adoption of the audio playing method disclosed by the invention, the audio file transmission efficiency can be improved, and the sound delay time is shortened.

The present invention relates to underground reciprocating oil pumping machine driven with a rotary motor, and relates to oil pumping machine. The underground reciprocating oil pumping machine has buffering oil pipe, motor set inside the buffering oil pipe, and motor output shaft connected to a lead screw. The motor rotates the lead screw to make the plunger fitting the lead screw move linearly, so as to convey raw oil from underground to surface. By means of transmission mode of rotating motor plus ball lead screw, the rotation of the motor is converted into the liner motion of the plunger pump. The present invention has the features of simple structure, smooth running, high system efficiency, good energy saving effect, capacity of meeting the requirement of automatic control and harsh condition of oil production, low cost, high reliability, etc.

The invention discloses a direct-drive side-hung automatic door control device and a control method thereof. The control device comprises an STM32 single chip microcomputer, a CPLD pulse distribution circuit, an intelligent power module (IPM), a permanent magnetic synchronous linear motor, a hall position sensor, an infrared sensor, a man-machine interaction interface and a door panel. The door panel is driven by the permanent magnetic synchronous linear motor, the hall position sensor detects the position of the door panel, the infrared sensor detects people stream information on the inner side and on the outer side of the door panel, and the STM32 single chip microcomputer generates motor enable signals, motor operation direction signals, PWM signals and motor brake signals according to received position information, system control/inquiry information and the people stream information. The permanent magnetic synchronous linear motor serves as a drive mechanism, and a system is high in reliability and convenient to maintain. The STM32 single chip microcomputer serves as a control core, so that development cost is lowered, and performance is stable; parameter setting and information display are achieved by means of a man-machine interaction touch screen, and operation is easy.

The invention belongs to power transmission and distribution equipment and relates to a valve mechanism of a main contact system of a direct-current switch cabinet, which is used for a handcart type direct-current switch cabinet or high-voltage switch cabinet. The mechanism comprises a fixed bracket, wherein the bracket comprises several parts which are an upright front support plate positioned at the front part, upright side plates positioned on both sides and a horizontal bottom plate positioned at the bottom, an upright valve is installed on the front support plate, the valve and the bracket are matched by an upright guide groove and a plug penetrated in the guide groove, the valve is articulated with the upper end of a connecting rod of the valve by a supporting seat, the lower end of the connecting rod of the valve is articulated at the front end of a push rod of the valve, the back end of the push rod of the valve is articulated on the side plates of the bracket, the middle part of the push rod of the valve is provided with a roller, the outer edge of the roller is pressed on a slide block with an oblique wedge surface, and the slide block is installed on a handcart and can move together with the handcart back and forth. The invention has simple structure and convenient manufacture and installation. Because of less transmission links of the invention, the invention reduces the probability of the occurrence of faults and enhances the reliability of motions.

The invention discloses a double-station vacuum packaging mechanism capable of achieving continuous operation. The double-station vacuum packaging mechanism is used for mass vacuum packaging of materials, and comprises a rack, a filling assembly, a quantitative scale, a first shaping part, a second shaping part, a first sealing assembly, a second sealing assembly, a first discharging device, a second discharging device, a guiding shaft, guiding rails and a PLC industrial control part. A packaging driving part is arranged on the lower portion of the rack, discharging stations are arranged on the two sides of the rack, a filling driving part and the horizontal guiding shaft are arranged on the upper portion of the rack, the quantitative scale is arranged above the middle of the guiding shaft, and the filling assembly is located at the guiding shaft and comprises a first filling part, a second filling part and a filling platform. Packaging bags are filled while the filling platform slides on the guiding shaft, the first shaping part, the second shaping part, the first discharging device and the second discharging device are fixed to guiding rail sliding blocks in a grouped mode, and the distance between the shaping part and the discharging device in any group is matched with the horizontal moving distance of the filling and discharging mechanisms. According to the double-station vacuum packaging mechanism, double-station design is achieved on the filling assembly, the filling, shaping, sealing and discharging actions of the double-station vacuum packaging mechanism are continuously carried out through structure matching, and thus efficiency is improved.

The invention discloses a crankshaft connecting rod neck grinding one hundred and eighty DEG C automatic dividing apparatus. A clamp body (4) is provided with a gear shaft (7) via a pivoting support body, an indexing disc (10) is arranged on the gear shaft (7), two sides of the clamp body (4) are provided with an adjusting pad (12) and an indexing location chock block (9) corresponding to the indexing disc (10), the clamp body (4) is provided with an oil cylinder (13) and a piston (3) thereof which is provided with a rack (2) which meshes with and transmitted with the gear shaft (7). The invention is simple in structure and needs only a simple low pressure hydraulic control loop to control automatic indexing action. The invention can be conveniently connected with a numerical control system and realizes the automatic indexing during neck grinding of the crankshaft connecting rod. The indexing precision can be adjusted via a mechanical turned piece and the adjustment is convenient, stable and reliable. The invention has good maintenance of precision.

The invention relates to a switch cabinet part structure, and in particular relates to a switch cabinet grounding switch and lower door interlocking mechanism. The mechanism comprises a cabinet body, wherein a grounding switch is arranged in the middle of the cabinet body; the lower part of the cabinet body is provided with a fuse chamber; the front end of the fuse chamber is provided with a lower door; the front end of an operating shaft of the grounding switch is a shaft head which can be inserted and matched with the operating handle; an interlocking disc which can rotate along the shaft head is connected to the shaft head; a connecting rod is hinged to the edge of the interlocking disc; the lower end of the connecting rod is hinged with a lock pin; the lock pin can be driven to vertically move on a guide seat through the connecting rod due to rotation of the interlocking disc; and when the lower door is in a closed state, the lock pin moves up and down and can be inserted out of or into a locking hole in a top frame of the lower door. The switch cabinet grounding switch and lower door interlocking mechanism is simple in structure, fewer in transmission links, convenient to mount and debug and high in action reliability.