72results about How to "Keep still" patented technology

The invention belongs to the field of machines, and relates to a two-freedom-degree micro type flexible hinge vibration attenuation platform and vibration attenuation method. According to the platform, a central body (vibration attenuation platform body) is arranged in a square frame shell, the peripheral faces, arranged at the upper end or the lower end of the square frame shell, of the central body are respectively provided with a flexible thin plate, the flexible thin plates are connected and extend towards one side along the face, the other ends of the flexible thin plates are connected with one face of the square frame shell, one face of the square frame shell is connected with the perpendicular connecting faces of the flexible thin plates of the central body, a perpendicular motor and a horizontal motor are fixedly connected with a horizontal frame and a perpendicular frame respectively, when external disturbance enables the central body to move, reverse-direction pushing force of the motors is controlled through a control algorithm, the pushing force enables springs and a perpendicular pushing head to move in the reverse direction, meanwhile, the perpendicular pushing head ejects the central body to push in the reverse direction, and the central body is kept static.

The invention relates to a injection device, comprising a housing being adapted to receive in its proximal housing portion a container with an injection fluid and to receive in its distal housing portion a dose setting and injection mechanism, wherein the mechanism includes a piston rod (28) being axially displaceable with respect to the housing for dispensing injection fluid from the container, wherein the piston rod (28) has an outer thread (34) and is arranged torque proof with respect to the housing, dose setting means comprising a threaded element, which threaded element has an inner thread being in engagement with the outer thread (34) of the piston rod (28), is designed so that its axial position relative to the housing is changeable and is rotatable relative to the piston rod (28) and relative to the housing during setting of an injection dose, wherein the dose setting means are designed such that the threaded element is held in torque proof manner relative to the piston rod (28) and to the housing during the injection of the beforehand set injection dose in such a manner that the threaded element and the piston rod (28) are axially displaceable together with respect to the housing, wherein the mechanism (26) further comprises holding means (60; 160) being in contact with the piston rod (28) and being designed such that the axial displacement of the piston rod (28) can be substantially immobilized during use of the device except for the dispensing of the injection dose. It is proposed according to the invention that the holding means (60; 160) are axially fixed with respect to the housing.

The invention discloses a real-time video image stabilization method based on timing grid flow superimposing. The real-time video image stabilization method comprises the steps that 1, each obtained video frame is down-sampled to the fixed size; 2, the first frame is taken as an initial reference frame, and a reference frame feature point is acquired; 3, video frame feature points are extracted and matched with the reference frame feature point, the optimal matched feature point of the video frame feature points is obtained, and a global homography matrix is constructed; 4, a part of the videoframe feature points are removed by means of the global homography matrix; 5, grids are distributed to the video frames, and motion vectors of grid vertexes are obtained according to the video framefeature points; 6, the reference frame changes in cycles, and motion vectors of the grid vertexes in each cycle are obtained by adopting a time domain superimposing method according to the reference frame of the cycle; and 7, motion vectors of pixels are calculated according to the motion vectors of the grid vertexes, and the pixels are adjusted according to the motion vectors of the pixels. According to the method, a lens is kept to be completely static in the overall video sequence.

The invention discloses a fixed-length welding method of a connection port of a blower shell. The fixed-length welding method comprises the following steps: a, mounting a flat pushing device; b, mounting a sliding device; c, mounting a fixed-length adjustment device; d, adjusting a distance between two clamp plates; e, mounting first material plates; f, welding a second material plate between thefirst material plates; and g, coating protective paint. According to the fixed-length welding method disclosed by the invention, a distance between the inner side surfaces of the two clamp plates canbe adjusted, so that the distance between the inner side surfaces of the two clamp plates is external width of the connecting port of the blower shell, and the size of the connecting port of the blower shell is strictly controlled, and thus, deviation between the size of the connecting port of the blower shell and an opening of the blower shell is reduced; moreover, the arranged positions of the two clamp plates are not changed in a welding process, and the connecting port of each blower shell is not needed to be positioned again; and through mutual cooperation of a positioning device, the clamp plates and a limiting fixation device, positioning of the connecting port of the blower shell is carried out, and therefore, the fixed-length welding method disclosed by the invention has the advantages of high manufacturing efficiency and low manufacturing cost, and is suitable for batch production.

The invention discloses a laser gyro based double-dynamic-target tracking guiding method. The method comprises the following steps that 1) a target GPS coordinate TG in a dynamic platform, a real-timeGPS coordinate AG of a tracking system, the real time attitude (alpha, beta, gamma) of the platform, and the initial attitude (alpha0, beta0, gamma0) are obtained in real time; 2) an earth-fixed coordinate of a target is transformed into a coordinate of a movement platform of the target; 3) a calibration horizon system and an axial system of the tracking system are converted to determine a transformation relation between axial system of the tracking system and the horizon system of the tracking system is obtained, and further a conversion angle from the horizontal system to the axial system of the tracking system is obtained; and 4) each inertial laser gyro is fixedly mounted in a random position of the platform, the tracking system is mounted on the platform, and the zero point of an encoder is not adjusted any more after installation. Only once calibration is needed, and the tracking system can be used directly in dynamic platform application later if the relative installation position is not changed any more, and a double-dynamic-target tracking guiding algorithm is reached to meet the requirements of dynamic target tracking guiding in the dynamic platform.

The invention discloses a high-pressure big-thrust two-position three-way ball valve structure, which comprises a valve bush, wherein a left steel ball seat, a pushing pin seat, a right steel ball seat and an armature are arranged in the valve bush; the outer side of the armature is provided with a solenoid coil used for controlling the action of the armature; the armature is connected with a mandril; the end part of the mandril is connected with the right end of a right steel ball; the right steel ball is positioned in a through hole of the right steel ball seat; the left end of the right steel ball is connected with the right end of a pushing pin; the pushing pin is installed on the pushing pin seat; the left end of the pushing pin is connected with a left steel ball; the left steel ball is positioned in the left steel ball seat; the inner cavity of the valve bush is provided with a left boss and a right boss; the left steel ball seat is positioned in the left boss, and the left steel ball and the left boss are in mutual large interference fit; the right steel ball is positioned in the right boss, and the right steel ball and the right boss are in mutual large interference fit. The invention provides the high-oil-pressure big-thrust two-position three-way ball valve structure which can effectively keep a ball valve set stationary and also has high frequency response and large flow under the conditions of high oil pressure and big thrust.

The invention discloses a detachable monitoring dome camera, which relates to the technical field of monitoring devices and solves a problem of inconvenience in mounting and detaching of the existingdome cameras. The detachable monitoring dome camera comprises a protective cover and a camera head in the protective cover, an upper part of the protective cover is sleeved with an outer cover of which a top end is provided with a mounting hole, a mounting tube with an internal thread is arranged on the mounting hole, an external wall of the protective cover is sleeved with a ring-shaped guide groove, a bottom end of the outer cover is provided with a plurality of through holes, a support rod is arranged in the through hole, one end of the support rod is provided with an idler wheel cooperating with the ring-shaped guide groove, the other end of the support rod stretches out the outer cover via the through holes, a limit fixing mechanism cooperating with the tail end of the support rod isarranged on the external wall of the outer cover, mounting and detaching can be convenient through cooperation of the internal thread and an upright tube with an external thread, meanwhile, stretchingout and drawing back of the support rod are realized by cooperation of the support rod and the limit fixing mechanism, the protective cover and the outer cover can be separated and detached, and overhauling for the camera is facilitated further.

The invention provides an analog source testing system of a rotation base-line interferometer positioning system and an application method of the analog source testing system. The analog source testing system comprises a radiation source generating module, a signal sampling data generating module, a high-capacity storage module and a radio frequency module B, wherein the radiation source generating module generates space-fed pulse description word data according to set data duration and signal features and outputs the space-fed pulse description word data to the signal sampling data generating module, and the signal sampling data generating module generates a space-fed signal and transmits the space-fed signal to the high-capacity storage module; the radio frequency module B reads the space-fed signal to generate a radio frequency signal and transmits the radio frequency signal into the detecting antenna of the positioning system through an antenna in a space-fed manner. By the analog source testing system, the wireless space-fed positioning testing signal can be simulated.

The invention relates to a minimally invasive surgical robot comprising a main operating table and a slave operating device. The main operating table is configured to send a control command to the slave operating device according to an operation of a doctor to control the slave operating device, and the slave operating device is configured to respond to the control command sent by the main operating table to perform corresponding operations. The slave operating device includes a mechanical arm, a power mechanism disposed on the mechanical arm and an operating arm disposed on the power mechanism. The mechanical arm is used for adjusting the position of the operating arm, the power mechanism is used for driving the operating arm to execute corresponding operations, and the operating arm is used for extending into the body and performing a surgical operation. The operating arm includes an end instrument, a connecting component and a first driving unit. The end instrument is provided witha spiral groove and rotatably connected with the far end of the connecting component, the connecting component is used for adjusting the posture and position of the end instrument, the far end of thefirst driving unit is accommodated in the spiral groove, so as to drive the end instrument to rotate substantially in the axial direction of the first driving unit.

The invention provides a waterproof lock used for an electric equipment cabinet and belongs to the field of locks for electric equipment cabinets. The waterproof lock comprises a key, a lock cylindershaft, a flat gasket sealing ring, a lock sleeve, a nut, a plastic flange and a fixed screw. The parts are connected and coordinate to form multiple sealing layers, moisture can be blocked from entering the interior of an electric equipment cabinet from a gap of a lock, and accumulation of condensed water is not formed, so that the aim of protecting electrical elements inside the equipment cabinetis achieved. The waterproof lock provided by the invention has the advantages of good waterproof performance, reasonable structure and low manufacturing cost.

The invention relates to a device for detecting initial rotor position of a PMSM (permanent-magnet synchronous motor). The device comprises an initial position detection digital computation module, adriving circuit, a three-phase inverter module, the PMSM and a current sensor and sampling circuit, wherein the driving circuit receives signals of the initial position detection digital computation module 1 and generates IGBT driving signals; the three-phase inverter module controls IGBTs of upper and lower bridge arms of each phase to be switched on and switched off according to the driving signals generated by the driving circuit; a three-phase stator of the PMSM is connected with the three-phase inverter module; the current sensor and sampling circuit acquires currents ia, ib and ic of thea, b and c three-phase stator of the PMSM. Influence of salient rate and saturation characteristic of a motor, precision of a current sensor and zero drift of a current sampling device on positioningaccuracy is reduced greatly, and the precision for detecting the initial rotor position is improved effectively.

The invention relates to a surgical robot. The surgical robot is characterized by comprising a master operating station and slave operating equipment, wherein the master operating station is configured to send a control command to the slave operating equipment according to the operation of a doctor to control the slave operating equipment; the slave operating equipment responds to the control commands sent by the master operating station and performs corresponding operations; the slave operating equipment comprises: a mechanical arm, a power mechanism arranged on the mechanical arm, and an operating arm arranged on the power mechanism; the mechanical arm is used to adjust the position of the operating arm, the power mechanism is used to drive the operating arm to perform corresponding operations, and the operating arm is used to extend into a body and perform the surgical operations; the operating arm comprises an end instrument, a connecting assembly and a rotary driving wire; the end instrument is rotationally connected with the far end of the connecting assembly; the connecting assembly is used to adjust the posture and position of the end instrument; and the rotary driving wire is wound on the end instrument and used to connect a driving mechanism to drive the end instrument to rotate relative to the connecting assembly.

The invention discloses a storage and classification integrated device for urological medical equipment. The device comprises a base, a first cabinet body, a second cabinet body, a third cabinet bodyand a fourth cabinet body; four lifting platforms are installed on the periphery of the top of the base, and the first first cabinet body, the second cabinet body, the third cabinet body and the fourth cabinet body are arranged on the tops of the lifting platforms in sequence; the first cabinet body is used for storing urological medical electrical equipment and accessories, the second cabinet body is used for storing urological medical surgical equipment, the third cabinet body is used for storing drainage bag or a urine bag or other bag urological medical necessities, the fourth cabinet bodyis used for storing disposable injection products. The urological medical equipment is separately storage in the cabinet bodies according to different types, the cabinet bodies form the integrated device, and distinguishing and arranging of the types are guaranteed; meanwhile, when receiving and using are conducted, the equipment can be obtained through the integrated device, and classified storing is conducted in the same space.

The invention discloses a waiting mechanism for upper and lower stations. The waiting mechanism comprises a driving mechanism, a transmission mechanism, an axial deformation mechanism and a station connecting mechanism which are connected in sequence, wherein the axial deformation mechanism or the station connecting mechanism is provided with upper and lower limiting mechanisms. According to the waiting mechanism, a motor is not required to stop rotating during the upper and lower stations, so that energy is saved, and the working efficiency is improved.

The invention discloses an excess material cutting mechanism for a curtain piece knitting machine, which comprises a cutter used for cutting excess straws and a cutter bracket. The mechanism also comprises a fixed supporting plate, a fixed supporting rod, a bracket connecting rod, a bracket, a roller and other parts, wherein one fixed supporting plate and the roller are attached to the front surface and the rear surface of a straw mat respectively; and the straw mat is arranged between the fixed supporting plate and the roller. When the straw mat drives downwards, the fixed supporting plate behind the straw mat and the roller in front of the straw mat act on the surfaces of the straw mat simultaneously to keep the stability of the straw mat in motion and keep the cutter on the bracket stationary and move upwards relative to the excess straws at the edges of the straw mat, so that the excess straws are cut. As the structures of the roller and the fixed supporting plates are adopted, the cutting mechanism is more compact and the cutting motion of the straw mat is more stable.

The invention discloses a new energy automobile electric energy automatic supply device based on the Internet of Vehicles technology, and belongs to the technical field of new energy automobile electric energy automatic supply. The new energy automobile electric energy automatic supply device comprises a bottom plate, a battery bearing plate, a disassembly and assembly driving assembly and a transfer driving assembly. The problem that in the process of replacing the batteries in an existing battery replacing station, the batteries without electricity are unloaded firstly, then the batteries without electricity are dragged out of an operation area, then the batteries without electricity are unloaded, the batteries with electricity are further loaded to an operation platform and then dragged into the operation area to be loaded, and consequently the battery replacing efficiency is low is effectively solved.

The invention discloses an energy-saving turntable sorting platform with an exercise function, comprising a sorting platform and a work chair, a working box is arranged at the bottom of the sorting platform, and a banknote sorting platform and a coin sorting platform are respectively arranged on the surface of the sorting platform Platform, the banknote sorting platform is equipped with a banknote sorting machine, the coin sorting platform is equipped with a coin sorting machine, the center of the sorting platform is equipped with a rotating shaft, and the side of the rotating shaft is equipped with a banknote coin separating device, and the surface of the work chair is equipped with an armrest , The surface of the armrest is provided with a control panel. It solves the problem of cash sorting in existing banks, which needs to sort banknotes and coins in different areas, resulting in cumbersome work procedures and waste of human resources during cash sorting. It is unstable, and it is easy to cause money to fall. At the same time, long hours of work make the body lack of exercise, and the way of using an external power supply consumes a lot of power resources, which leads to troublesome problems in use.