40results about How to "High action accuracy" patented technology

The invention relates to a flexion type acceleration switch. In the switch, a tilted support beam, a mass block and a height adjustable contact component in a group are arranged in an insulation encapsulated shell of the switch, wherein the tilted support beam is of a double layer structure; two ends of the support beam are fixed at two sides of the shell; the double layer tilted support beam supports the mass block in a certain angle alpha to ensure that the mass block is balanced and suspended in an inner cavity of the insulation encapsulated shell; a contact is arranged on the bottom of the mass block; the height adjustable contact is arranged on the insulation encapsulated shell right under the mass block, and remains a certain distance from the mass block; when the double-layered tilted support beam is bent under the action of exterior threshold inertia force, the mass block moves along the exterior acceleration velocity to ensure that elastic contact is formed between the contact on the mass block and the height adjustable contact, and extrudes the contact to form stable contact by means of flexion elastic force. The acceleration switch is characterized by simple structure, adjustable threshold value and strong interference resistance.

The invention discloses a steady-state zero-sequence current increase-support apparatus and method. It has solved the shortcoming that the system fault electric amplitude of its own is small and difficult to detect, which occurs in the exsiting method of using the steady-state component in route selection and positioning. It has advantages such as transient amplification of the fault signal steady-state component after the single-phase ground fault occurs in the power network, which allows the route selection and positioning device based on the single-phase ground fault steady-state quantity, to accurate position, so at to achieve the purpose of positioning and route selection. Its structure is that: it includes a protected bus of the distribution system, and a steady-state zero-sequence current increase-support apparatus installed on the bus, which is connected to a voltage transformer, while the voltage transformer is connected to the bus; the increase-support apparatus is composed of a power capacitor group, on-off switches and a control device which monitors whether the single-phase ground fault occurs in the distribution system, while the power capacitor group help to increase the ground current, and the control device controls the on-off state of the power switch control group through the on-off switches.

The invention discloses a bottle blowing device for a bottle blowing machine. The device comprises a mold frame, a left bottle body mold, a right bottle body mold, a left mold base, a right mold base, a left mold lock plate, a right mold lock plate, and a driving seat. The left and right mold lock plates are vertically and slidably arranged on the mold frame; mold lock blocks at intervals are arranged on the left and the right mold lock plates; the left and right mold seats are provided with embedding holes; the driving seat is driven by a power device; the driving seat is provided with a left mold opening and closing curve groove, a right mold opening and closing curve groove, a left mold lock curve groove and a right mold lock curve groove; the left and right mold seats are respectively provided with a mold opening and closing cooperation part constrained in the left mold opening and closing curve groove, the right mold opening and closing curve groove; and the left and right mold lock plates are respectively provided with a mold lock cooperation part constrained in the left and right mold lock curve grooves. The bottle blowing device uses the driving seat can be realize mold opening and closing and mold locking of the left and right bottle molds at the same time; and the whole bottle blowing action process reduces the number of cylinders, sensors and electromagnetic valves, saves cost, reduces the failure rate and repair, and is also very convenient.

The present invention provides a primary frequency modulation realization method in a power closed loop mode and a device thereof. The method comprises the steps of receiving a power setting value, detecting whether a power grid fluctuation exceeds a set frequency dead zone, calculating a power changing amount and a power superposition amount according to a unit rated power, a unit frequency and the changing amount of the unit frequency relative to a rated frequency if the power grid fluctuation exceeds the set frequency dead zone, and calculating and generating the power final given value of primary frequency modulation according to the power setting value, the power change amount and the power superposition amount. According to the primary frequency modulation realization method in a power closed loop mode and the device thereof of the embodiment of the invention, the quickness of unit primary frequency modulation is improved, the corresponding power can be outputted timely according to the power gird fluctuation, the motion accuracy of unit primary frequency modulation can be improved, and the cooperation of unit primary frequency modulation and secondary primary frequency modulation is simple and is easily grasped by operating personnel.

The invention discloses an intelligent robot arm automatic doffing device which comprises a doffing air frame, an air frame transmission component and a bobbin conveying part and the like. An original synchronous belt speed reduction transmission structure is omitted for the air frame transmission component, a servo motor is adopted to directly drive a speed reducer through a coupler, power is transmitted to a lead screw pair through chain wheel transmission, a lifting pull rod moves in a left-right mode axially and drives a lifting connecting rod and a lifting swing rod of an inversely V-shaped lifting link mechanism, a holding beam is obliged to drive a yarn holding device to move up and down in the vertical plane, and thus lifting motion of the yarn holding device and the holding beam is finished. According to the intelligent robot arm automatic doffing device, during pull and insertion of a bobbin, intermediate transition movement links of air frame transmission are omitted, doffing time is reduced, the intelligent robot arm automatic doffing device has higher production efficiency and higher movement accuracy, and bobbin pull and insertion accuracy is ensured.

The invention discloses a dual-threshold three-stable-state collision sensor, belonging to the technical fields of precision micro electro mechanical systems and collision sensors. The dual-threshold three-stable-state collision sensor is mainly characterized in that an outer mass block, an inner mass block, parallel beams, a fixed block, a first contact and a second contact constitute an inside / outside-nested bilayer oblique support beam structure. According to the invention, the collision strength grade can be judged quickly and a control signal can be sent out without a processor and a driving device. When no dangerous conditions exist, the sensor is in a first stable state, when external collision strength exceeds a first danger threshold value and smaller than a second danger threshold value, the inner mass block rapidly comes into contact with the first contact, and the sensor is in a second stable state; when the external collision strength exceeds the second danger threshold value, the outer mass block and the inner mass block come into contact with the first contact and the second contact rapidly at the same time, and the sensor is in a third stable state; and when two collisions occur continuously, the first contact and the second contact of the sensor are connected in sequence. The dual-threshold three-stable-state collision sensor disclosed by the invention has the characteristics of simple structure, multi-threshold-value intelligent sensing capability, reliability in contact, no need of driving, and strong electromagnetic interference resistance.

The invention discloses a horizontal moving device of a yarn holder crossbeam. The horizontal moving device comprises a yarn holder, a yarn holder crossbeam, a yarn holder crossbeam support rack, a slider, a linear guide rail, a front support, a rear support, a servo motor, a ball screw pair, a cushion, a spacer bush, a matched pair angular contact ball bearing, a sleeve, a flange plate, a locking nut, a diaphragm coupler and a limit block and is characterized in that the servo motor is used to directly drive the ball screw pair to rotate and transmit power to the ball screw pair, and the power is transmitted to the yarn holder crossbeam through the front support on the ball screw pair so as to allow the yarn holder crossbeam to move axially. The horizontal moving device has the advantages that the movements of a spinning frame are reduced, a doffing device structure is simplified, accuracy is increased, the space occupation of the outward swinging action of the yarn holder is reduced, doffing time is reduced, and production efficiency is increased.

A knife and scissors having a protection means are disclosed. The knife, which has a handle, a body extended in one direction in engagement with the handle, and a body blade formed at the bottom of the body, for performing a cutting action, includes a protrusion spaced upward from a distal end of the body, an insertion portion formed in a space between the body and the protrusion, and an upper blade formed at the bottom of the insertion portion. The upper blade cuts an object inserted in the insertion portion and the protrusion protects a human body or the object by contacting the body or the object earlier than the distal end of the body, when the body slips off the object.

The invention provides a bionic lateral transplanting type seedling transplanting mechanism for a rice transplanter. The mechanism comprises a seedling supporting plate fixedly arranged on a stander, and a seedling transplanting device of which the front end is provided with a seedling fork, wherein the seedling fork moves near to the side face of the seedling supporting plate when downwards passing through the seedling supporting plate, and an inclined angle between the side face of the seedling fork and the side face of the seedling supporting plate is within the range of 10-30 degrees. The mechanism provided by the invention downwards moves near to the side face of the seedling supporting plate through the seedling fork of the rice transplanter, seedlings are transversely and crossly transplanted, the seedlings are wide in application specification range, the mechanism is widely applicable to the factory seedling cultivation, the soilless seedling cultivation, the mud seedling cultivation and the common land seedling washing, and the mechanism is high in action accuracy, good in seedling-taking effect, and accordant in rice transplanting depth specification; and the seedling supporting plate and the seedling fork are jointly used, the transversely-placed seedlings are straightly supported and laterally transplanted, the seedling fork laterally presses the parts of the seedlings, which enter mud, when the seedlings are transplanted, the parts of the seedlings, which enter the mud, are tightly combined with the mud, and the mud is high in adhesive power to the seedlings, so that the stability and the success rate of the seedling transplanting can be greatly improved, and the phenomenon of seedling tumbling or seedling floating can be reduced.

The invention discloses an integrated doffing device of a spinning frame. The integrated doffing device comprises a yarn-holding device beam, rotary arms, holding beams, inverted-V-shaped lifting link mechanisms, a lifting pull rod and a pull rod driving device. The rotary arms are hinged to the yarn-holding device beam, and the inverted-V-shaped lifting link mechanisms are hinged to the holding beams. The rotary arms are hinged to the outer side of the yarn-holding device beam and used for controlling horizontal movement of the yarn-holding device beam and avoiding outward-swinging action of the yarn-holding device beam. The inverted-V-shaped lifting link mechanisms are hinged to the inner sides of the holding beams. When bobbins are pulled out from or inserted into the doffing device, a lifting beam and a corresponding bobbin intermediate station are omitted, the intermediate transition action step executed when the bobbins are pulled out or inserted into is omitted, doffing time is shortened, higher production efficiency and action accuracy are achieved, and the accuracy when the bobbins are pulled out or inserted into is ensured.

The invention discloses a device to automatically place nuts in a mold. The device comprises a box body, a pressing plate, a driving mechanism, a feeding assembly and a control assembly; the feeding assembly comprises a feeding cylinder and a feeding push rod; the control assembly comprises an elastic part, a limiting sliding block and a sliding block push rod, wherein a horizontal inserting rod is arranged on the limiting sliding block; and the device is provided with a longitudinally-arranged feeding opening and a horizontally-arranged feeding through hole, the nuts which need to be fed intoa mold cavity are arranged in the feeding opening in parallel and in a single row from bottom to top, the driving mechanism drives the feeding push rod and the sliding block push rod to move in the same direction, the feeding push rod slides in the feeding through hole to push materials, and the sliding block push rod and the horizontal inserting rod are used for intermittently opening or closingthe feeding opening. The device is simple in structure and can be installed on an injection mold, so that the function that the nuts are automatically placed in the mold cavity is realized, the product qualification rate and the production efficiency are improved, the working intensity of an operator is relieved, the potential safety hazards are avoided, and the production period is shortened.

The invention discloses a pressure change trend-based digital non-electric quantity protection method for oil-immersed transformers. According to the method, when an oil-immersed transformer is operated, a pressure value P(t) at a measurement point of a protected oil-immersed transformer is acquired in real time, and judgement is carried out to decide whether to start a protection element or not according to the fact that whether the pressure instantaneous value P(t) at the measurement point achieves a protection starting threshold value Pst or not; if the protection element is started, a longpressure waveform of a data window with a T of 10ms is intercepted, and pressure change amounts DeltaPi at N sampling points in the data window are calculated in sequence; and statistical analysis iscarried out to obtain a number n of pressure change amounts DeltaPi which are positive values, and if n / N-1 is greater than 2 / 3, judgement is carried out to determine that the transformer has internal fault and the protection element acts. The method is capable of correctly distinguishing internal faults and external disturbances of oil-immersed transformers, so as to effectively avoid false action or action refuse of pressure protection elements.

The invention discloses a seamless underwear machine valve group distributed drive control system and a control method. The system comprises a main control layer and an execution layer. The main control layer and the execution layer are connected through two RS485 buses. The main control layer comprises a main control chip and two RS485 modules which are respectively connected with the main control chip through lines. The execution layer comprises a shuttle valve group and another valve group. The shuttle valve group and another valve group are respectively connected with an RS485 module on the main control layer through an RS485 bus. The shuttle valve group comprises a shuttle valve plate and a shuttle valve which is connected with the shuttle valve plate. Another valve group comprises another valve plate and another valve which is connected with another valve plate. According to the invention, a control circuit is simplified; the scalability and the stability are improved; work current is reduced; temperature is lowered; the valves are effectively protected; and the action accuracy of the valves is improved.

The invention provides a magnetic switch installation structure for controlling the stroke of a large-diameter cylinder. The magnetic switch installation structure comprises the cylinder, a magnetic switch A and a magnetic switch B. The cylinder comprises a cylinder body and a piston rod capable of reciprocating along the length direction of the cylinder body, the magnetic switch A and the magnetic switch B are both fixedly installed on the outer surface of the cylinder body, and the stroke of the cylinder is set as F. The distance between the installation position of the magnetic switch A and the bottom end of the cylinder body and the distance between the installation position of the magnetic switch B and the top end of the cylinder body are each one third of the stroke of the cylinder. Due to the adoption of the technical scheme, the actual effective stroke of reciprocating motion of the cylinder can be smaller than the rated nominal stroke and located in the middle of the range of the rated nominal stroke, and the influence of radial swing generated when the cylinder moves at the two ends of the rated nominal stroke on motion precision and corresponding control precision can be avoided; and the action accuracy of a power actuating mechanism and the control precision of the whole mechanical equipment can be conveniently improved.

The invention relates to the field of artificial intelligence, and discloses a video teaching method based on artificial intelligence, and related equipment. The video teaching method comprises the steps: creating an action type ID and an articulation point type ID, and enabling the action type ID to be associated with the articulation point type ID; generating an articulation point standard action track and storing the articulation point standard action track in a database; obtaining a real-time articulation point action track and an action type ID corresponding to the real-time articulationpoint action track; and querying an articulation point standard action track in the database according to the action type ID, comparing the real-time articulation point action track with the articulation point standard action track, and sending prompt information according to a comparison result. For the video teaching method based on artificial intelligence, standard actions are input through videos and compared with the input real-time practice actions of students, and prompts are given, so that the action accuracy of the students is improved, and the practice efficiency is improved.

The invention discloses a driving block driving single arm type conduction sound production mechanism applied to a keyboard switch, which comprises a balancing frame, a driving block triggered by the balancing frame to act and a conduction sound production component triggered by the driving block to conduct and produce sound, and is characterized in that the conduction sound production component comprises an elastic body and at least one conduction part, the elastic body is provided with a conduction sound production elastic arm extending towards the upper portion of the conduction part, and the conduction sound production elastic arm is triggered by the driving block to act. According to the driving block driving single-arm type conduction sound production mechanism applied to the keyboard switch, conduction and sound production functions can be realized, the accuracy of conduction and sound production actions is high, the conduction and sound production sensitivity can be improved, the occupied space is small, and the thinning of the keyboard switch is facilitated.

A four-steady-state crash sensor comprises a three-layer oblique supporting beam structure mainly composed of a mass block, parallel beams, a fixed block and a contact set in an interior-exterior nested mode. The four-steady-state crash sensor can quickly judge crash strength grades and send out control signals without a processor and a drive device. The four-steady-state crash sensor has the advantages of being simple in structure, reliable in contact and high in anti-electromagnetic interference capacity, the drive device is not needed, and multi-threshold intelligent sensing can be achieved.

A method and system for providing annotations related to a location or related to an object in augmented reality, AR. The method includes retrieving by a client device of a user a candidate list, CL, of available augmented reality bubbles, ARB, for the location and / or object in response to a query, Q, based on an approximate geolocation of the client device and / or based on user information data; selecting at least one augmented reality bubble, ARB, from the retrieved candidate list, CL, of available augmented reality bubbles; loading by the querying client device from a database a precise local map and a set of annotations for each selected augmented reality bubble, ARB, and accurate tracking of the client device within the selected augmented reality bubble, ARB, using the loaded precise local map of the respective augmented reality bubble, ARB, to provide annotations in augmented reality at exact positions of the tracked client device.

The invention discloses a pressure change trend-based digital non-electric quantity protection method for oil-immersed transformers. According to the method, when an oil-immersed transformer is operated, a pressure value P(t) at a measurement point of a protected oil-immersed transformer is acquired in real time, and judgement is carried out to decide whether to start a protection element or not according to the fact that whether the pressure instantaneous value P(t) at the measurement point achieves a protection starting threshold value Pst or not; if the protection element is started, a longpressure waveform of a data window with a T of 10ms is intercepted, and pressure change amounts DeltaPi at N sampling points in the data window are calculated in sequence; and statistical analysis iscarried out to obtain a number n of pressure change amounts DeltaPi which are positive values, and if n / N-1 is greater than 2 / 3, judgement is carried out to determine that the transformer has internal fault and the protection element acts. The method is capable of correctly distinguishing internal faults and external disturbances of oil-immersed transformers, so as to effectively avoid false action or action refuse of pressure protection elements.

The invention discloses a longitudinal tearing protection device for a coal conveying belt. The longitudinal tearing protection device comprises: a coal conveying rack, wherein a first connecting rod is fixedly connected to the upper end of the coal conveying rack, a rolling roller is mounted on the first connecting rod, a coal conveying belt is mounted on the rolling roller, a second connecting rod is arranged on the coal conveying rack in a penetrating manner, an aluminum turning plate is fixedly connected to the outer wall of the second connecting rod, and a fixed bearing abutting against the outer wall of the coal conveying rack is connected to the second connecting rod in a threaded mode; a protection assembly, wherein the protection assembly comprises a proximity switch fixedly connected to the inner wall of the coal conveying rack. The problems that a transmission belt is mostly used for conveying materials and serves as a unique channel for unloading coal entering a factory, operation safety is very important, if the transmission belt is punctured by a sharp object, coal conveying equipment loses preparation, great pressure is brought to coal conveying operation, in case that equipment in each equipment link breaks down, output of a generator set is directly reduced, and even the generator set is forced to stop, so that the safety production is seriously influenced, and heavy economic loss is caused.

The invention discloses a bacterium collection method applying a biological medicine injection microorganism detection robot system. The bacterium collection method comprises the steps of placing a bacterium collecting incubator, placing a culture solution bottle, pouring injection, collecting bacteria and filtering, pouring a culture solution, packaging and storing, placing back to an empty culture solution bottle and the like. The beneficial effects of the method are that the method achieves the full-automatic operation through the six-axis robot, is less in manual intervention, enables a detection result to be more accurate, is higher in reliability, improves the detection efficiency, and saves the labor cost.