439results about How to "Manufacturing precision requirements are low" patented technology

The invention provides an electric pressure cooker. The electric pressure cooker comprises a cooker body, a cooker lid, an exhaust pipe, a relief valve and a switching device; the cooker body is usedfor containing cooked food, the cooker lid is arranged on the cooker body, the exhaust pipe is arranged on the cooker lid and communicated with the cooker body, the relief valve is arranged on the exhaust pipe, and a first magnetic part is arranged on the relief valve; the switching device is arranged in the cooker lid and movably arranged relative to the relief valve, multiple second magnetic parts different in magnetism are arranged on the switching mechanism, the second magnetic parts and the first magnetic part cooperate with each other and apply magnetic force to the relief valve, the switching device has multiple switching positions, and when the switching device moves between the different switching positions, the magnetic force applied to the relief valve is changed. According to the technical scheme, the problem that in the prior art, a magnetic drive structure of the relief valve of the electric pressure cooker needs high manufacturing precision and installation precision issolved.

The invention relates to the field of laser equipment, in particular to laser equipment and a laser scanning galvanometer array calibrating method. The laser scanning galvanometer array calibrating method includes steps of acquiring images corresponding to operations of a laser scanning galvanometer array by a calibrator, processing the images by the calibrator so as to obtain calibration values of various scanning galvanometer; generating actual scanning positions by the scanning galvanometer so as to scan according to the calibration values. By the laser equipment and the laser scanning galvanometer array calibrating method, operation quality in a large operation area is ensured under the condition that manufacturing accuracy requirement of the equipment can be reduced.

The invention discloses a terahertz waveband broadband absorbing metamaterial and belongs to the field of electromagnetic communication. The terahertz waveband broadband absorbing metamaterial comprises a metal reflection layer, a medium layer and a metal pattern layer, wherein the medium layer is arranged between the metal reflection layer and the metal pattern layer, the metal reflection layer is a continuous metal film and in the thickness larger than skin depth of Terahertz waves, the metal pattern layer is composed of periodically arranged unit devices which are a plurality of concentric metal rings, and absorbing bandwidth portions of the adjacent single rings are overlapped to form Terahertz waveband broadband absorption. Duty ratio and average absorption rate of a periodic structure of the metalmaterial are increased greatly, bandwidth control of Terahertz waveband absorption is realized by increasing and decreasing the number of the concentric metal rings, absorption bandwidth is flexible and convenient to adjust, the pattern structure is simple, multilayer overlapping is omitted, period is short, requirements on manufacturing accuracy is low, and batch production is facilitated.

The invention discloses an air brake system for an automatic program management (APM) vehicle. In order to solve the problems that an existing air brake system does not have the functions of brake control, brake monitoring and fault diagnosis, the air brake system for the APM vehicle comprises an air supply module, an air control module, a brake control module, a basic brake device air circuit control module, an air spring air circuit control module, and an uncoupling and vehicle connection pipeline control module. Compared with the prior art, the air brake system has more flexible brake cylinder pressure regulating capability, and better control precision and function extensibility.

The invention provides a composite material I-shaped stringer molding process, which comprises: manufacturing a hard mold tool; manufacturing a soft mold process cover plate; manufacturing a lower edge strip soft mold; molding an I-shaped stringer core mold; molding an I-shaped stringer lower edge strip flat plate; molding an I-shaped stringer upper edge strip flat plate; molding a stringer wick strip; combining to obtain an I-shaped stringer tool; preparing a vacuum bag; curing; and demolding. According to the present invention, the part manufactured according to the process has good appearance quality, the generation of internal defects cannot be caused, the molding quality of the thin part can be improved, and the requirements on the manufacture precision and the matching precision of the molding tool are reduced so as to reduce the manufacturing cost of the part.

The invention discloses an expansion-breaking processing method of a connection rod used for an automobile engine which is also applied to the processing of the connection rods of a diesel engine, a barge engine, etc. The method is mainly characterized by adopting a technical flow as follows: processing the upper plane and the lower plane of the connection rod; machining a small end hole; boring a small end hole and a big end hole; drilling a bolt hole and tapping; drawing an expansion-breaking stress slot; expansion-breaking; assembling; preciously boring the small end hole and the big end hole; preciously milling the small end hole and the big end hole, detecting, etc. Practical applications proves that the method reduces accumulated errors, thus effectively improving the use performance of a connection rod assembly; reducing working procedure and processing precision as well as improving efficiency; the method adopts a common device and a special clamp to finish the expansion-breaking processing, thus being applied to the multi-variety small-batch production of the connection rod and simultaneously reducing the investment risk.

The invention discloses an autonomous humanoid double-arm robot. The autonomous humanoid double-arm robot comprises a head, a double-wheel differential driving mobile platform, two seven-degree-of-freedom humanoid arms, a moving target simulation platform and a PTZ camera system; and a speedometer, a two-dimensional laser radar system, an ultrasonic obstacle avoidance sensor system, a binocular vision measurement system and the PTZ camera system are arranged in the double-wheel differential driving mobile platform. The autonomous humanoid double-arm robot has the advantages that the double-wheel differential driving mobile platform and the high-redundancy humanoid double-arm robot are utilized to form one high-redundancy humanoid double-arm mobile service robot system based on an ROS operating system; an advanced method for performing integral motion planning on the high-redundancy humanoid double-arm mobile service robot on the basis of an integral speed decomposition control algorithm is provided; a multi-modal information fusion target acquiring and identifying and capturing system based on a PTZ vision system and a laser sensor system is established; and a path planning methodbased on a three-dimensional C space enhanced type probability map improved A* algorithm is provided.

The invention discloses a full-automatic biochemical analysis method. The method comprises the following steps: (1) preparing; (2) sampling, sample adding and stirring: an XYZ triaxial movement system is driven by a controlling circuit module to drive a reagent-sample adding and stirring system to transfer samples from a sample cabin to a reaction cup in a reaction disc and transfer reagents from a reagent cabin to the reaction cup in the reaction disc; when the reagents and samples are transferred, liquid in the reaction cup is stirred through the reagent-sample adding and stirring system; the specific liquid volume of sampling and sample adding is controlled by a plunger pump; (3) biochemical reaction and detecting; (4) cleaning. According to the invention, procedures such as sampling, sample adding, stirring, analyzing and detecting, and cleaning are integrated, so that the degree of automation is high, the operation is convenient, the relevant equipment cost is low, the detecting efficiency is high, and the popularization and implementation are easy.

The invention relates to an active electric power-assisting circulation ball type steering system, comprising a steering column tube assembly, a screw rod moving device, a circulation ball type steering device, an electric power-assisting device and an automatic control module. A steering column tube is connected with the upper part of a screw rod of the circulation ball type steering device through a sliding spline, and the electric power-assisting device is connected with the lower part of the screw rod through a sliding spline; the screw rod moving device is sleeved on the screw rod; the screw rod has two motion freedoms; a freedom of rotating around the axis is controlled by a steering wheel; and the other freedom of moving along the axis is controlled by a screw rod moving control motor; a steering nut is moved by overlapping the effects of rotation and axial movement of the screw rod, so that a transmission ratio of the steering system is changed in real time, and the active steering is intervened. The steering system not only can meet the requirements on lightness and high sensitivity at a low-speed steering process and on stable operation at a high-speed steering process, but also has the characteristics of security, compact structure, low cost and the like. The active electric power-assisting circulation ball type steering system is applicable to a medium / light passenger bus and a lorry.

The invention discloses a special-shaped display panel and a display device. The outline of a display area of the special-shaped display panel comprises at least one arc edge, and the special-shaped display panel comprises multiple data lines extending in the first direction and multiple scanning lines extending in the second direction; the special-shaped display panel comprises multiple display pixel lines, and each display pixel line comprises display pixels distributed in the second direction; at least one display pixel line exist, and display pixel lines are connected with the arc edges in an adjacent mode; one first display pixel exists in one display pixel connected with the corresponding edge in an adjacent mode, the spacing between the first display pixels and the arc edges is smaller than that of any other display pixels in the display pixel line and the arc edges, the area of the first display pixel is larger than that of any other display pixels in the display pixel line. According to the scheme, by increasing the size of the display pixels in the special-shaped area properly, the requirement of the manufacturing precision is lowered, the manufacturing yield of the special-shaped display panel is increased conveniently, and the manufacturing efficiency of the special-shaped display panel is improved conveniently.

The invention relates to equipment for machining metallic sheet metal pieces, in particular to a flat edge-trimming machine. The flat edge-trimming machine mainly comprises a frame (1), an electrical appliance control box (2) and a braking motor (3) which are arranged in the frame (1), an oil cylinder or cylinder device which is arranged on the upper part of the frame (1), a die assembly (39) which is divided into upper and lower parts, a transmission component which transmits the power of the braking motor (3) to the lower part of the die assembly (39), and a guide oil cylinder or cylinder (35) which ensures that the lower part of the die assembly resets, wherein the transmission component comprises a spindle (8); and the spindle (8) in the transmission component is directly connected with a braking motor shaft (4) on the braking motor (3) through a chain wheel, and the power of the braking motor (3) is transmitted to the spindle (8) after a braking motor shaft single-row chain wheel (5) on the braking motor shaft (4) is engaged with a spindle single-row chain wheel (7) on the spindle (8). The invention is characterized in that the flat edge-trimming machine can trim regularly, is low in cost, and is safe and reliable; and the flat edge-trimming machine can easily remove excess materials on the edges of drawn pieces, so that the processes are simplified, the labor intensity of workers and the machining time are reduced, the production efficiency is improved, and accident work injuries can be avoided.

The mechanical switching equipment for wave energy generator includes one floating ball, one first shaft connected to the floating ball and provided with one first unidirectional clutch and one second unidirectional clutch of opposite rotation directions, one second shaft with one chain wheel and one reversing gear, and one power output shaft with one third unidirectional clutch and one gear type unidirectional clutch. The first unidirectional clutch and the third unidirectional clutch are connected through one chain, the second unidirectional clutch is connected to one chain wheel through the chain, and three shafts are fixed by means of bearings and supported in shore side. When the floating ball is driven by waves to move up and down, the first shaft is rotated, the power output shaft rotates always in one direction owing to the reversing of the clutches and gear, the clutches on the power output shaft prevent the feedback of the power, and the power is output to the generator via one coupling.

The invention discloses a side-chain transmission device, which comprises the following parts: frame (9), loop-shaped transmission chain (4) on the rack, chute (3) on the loop-shaped transmission chain intervally, shaping device (1) and pushing device (2) beside the loop-shaped transmission chain sequently. The invention can precede self-supplement for pile-shaped material effectively, which lessens the labor strength greatly.

A two-degree-of-freedom metamorphic mechanism in the technical field of robots comprises a mobile platform, three static platforms and three branches respectively connected with the mobile and static platforms, wherein the first branch and the second branch adopt the same structure, that is, the first branch as well as the second branch comprises a first single-degree-of-freedom kinematic pair, a second single-degree-of-freedom kinematic pair and universal pairs, which are connected in sequence through connecting rods; the first single-degree-of-freedom kinematic pairs are connected with the first static platform or the second static platform; the first universal pairs or the second universal pairs are connected with the mobile platform; the third branch is configured in two ways. The two-degree-of-freedom metamorphic mechanism can realize the change of the characteristic of one-dimensional rotation of a tail end, that is, the tail end can rotate around an axis in a certain direction under a certain condition and rotate around an axis in another direction under another condition.

Disclosed is an external pressing type flexible duct valve. The flexible duct valve is provided with a valve body. The valve body is provided with a through hole allowing a flexible duct to penetrate through and a cylindrical cavity for accommodating a rotary pressing component. The flexible duct used for delivering liquid penetrates through the through hole. The rotary pressing component is arranged in the cavity and comprises an eccentric wheel, a pressing wheel, a wheel axle and a key. The rotary pressing component can be driven manually or electrically to rotate so as to press or release the flexible duct, so that a liquid channel is closed and opened. Due to the fact that the rotary pressing component of the flexible duct valve is completely isolated from fluid in the flexible duct, pollution can not be caused to fluid flowing through the duct valve, and power required for opening or closing the duct valve is small. The external pressing type flexible duct valve is simple in structure and easy to implement.

The invention discloses a synchronous wave kinetic potential energy collection and conversion device. In the device, a support is provided with an input shaft, a kinetic energy reversing shaft, a potential energy reversing shaft and an output shaft; the input shaft is provided with a swinging rod, a buoy shaft arranged on a buoy is arranged on the swinging rod, the buoy is provided with blades, the left side of the input shaft is provides with a driven chain wheel, a right kinetic energy ratchet wheel and a right kinetic energy ratchet wheel, the driven chain wheel is connected with a driving chain wheel arranged on the buoy shaft by a chain, the right side of the input shaft is provided with a left potential energy ratchet wheel and a right potential energy ratchet wheel, the kinetic energy reversing shaft is provided with a kinetic energy reversing gear engaged with a left kinetic energy driving gear, the potential energy reversing shaft is provided with a potential energy reversing gear engaged with a right potential energy driving gear, the left side of the output shaft is provided with a left kinetic energy driven gear engaged with the kinetic energy reversing gear and a right kinetic energy driven gear engaged with the right kinetic energy driving gear, and the right side of the output shaft is provided with a right kinetic energy driven gear engaged with the potential energy reversing gear and a left potential energy driven gear engaged with the left potential energy driving gear. The device can convert kinetic energy and potential energy of waves into rotation energy in a definite direction.

The invention discloses a box structure of a water tank type cleaning machine. The box structure comprises a water tank body, a cover plate and a driving device, wherein the rear end of the cover plate is connected with the water tank body in a rotating manner; the driving device is used for driving the cover plate to be opened or closed and comprises a motor, a gear and a transmission bar; the motor is arranged on the side wall of the water tank body; the gear is driven to rotate by the motor; the transmission bar is driven by the gear to move within a certain range of the vertical direction; the top end of the transmission bar is in sliding fit with the corresponding face of the cover plate; the transmission bar comprises a rack part, a first flat sliding part and a second flat sliding part; the rack part is engaged with the gear; the first flat sliding part is positioned on the upper side of the rack part and the second flat sliding part is arranged on the lower side of the rack part respectively. After a cleaning program of the cleaning machine is ended, the cover plate can rotate relative to the water tank body automatically, so that the safety for operation is improved; the angle for opening the cover plate can be defined, so that dishes in the cleaning machine and the cleaning machine achieve a better drying effect.

A device for the emergency repairing of damaged pipeline is composed of steel-plastic lniing sleeve put ni the ends of the damaged pipe and new pipe to make its external surface matched with their inner surfaces, the elastic ring sleeving on the contact position of said both pipes, and protecting unit sleeving on the external surface of said elastic ring.

The invention discloses a suspension unit structure of a maglev train. A suspension frame is provided with a longitudinal supporting beam fixed at the middle part of the body of the maglev train; one ends of suspension guide modules are sleeved on the supporting beam through bearings and are pairwise arranged at two sides of the longitudinal supporting beam in bilateral symmetry, each suspension guide module consists of a cross bracket and an electric magnet arranged at one end of the bracket, and air springs used for connecting with the body of the maglev train are arranged on the suspension guide modules. In the suspended unit structure, a suspension controller of each module can be designed as an independent system, thereby reducing the design difficulty of the controllers, improving the stability of a suspension system and dynamic operating characteristics of the maglev train, and further reducing design and manufacturing precision requirements of a low guide rail functional plane and the comprehensive cost.

The invention discloses a novel full-automatic biochemical analyzer, comprising a pedestal (15), a reagent-sample introducing and stirring system (4), a control circuit module, a sample storage device, a reagent storage device, a rotary reaction disc (13), a stepping motor used for driving the reaction disc to rotate, a cleaning system (11), a plunger pump (12), a photoelectric detection system (9) and an XYZ triaxial moving system used for driving the reagent-sample introducing and stirring system to rotate, wherein the control circuit module, the sample storage device, the reagent storage device, the rotary reaction disc (13), the stepping motor, the cleaning system (11), the plunger pump (12), the photoelectric detection system (9) and the XYZ triaxial moving system are arranged on the pedestal, and the reagent-sample introducing and stirring system (4) has an integrated introducing and stirring function and is arranged on a Z-direction sliding assembly. The novel full-automatic biochemical analyzer provided by the invention integrates procedures consisting of sampling, sample introduction, stirring, analysis and detection, cleaning, etc., realizes full process automation and has the advantages of a high degree of automation, convenient operation, low cost, high testing efficiency and easy popularization and application.

The invention discloses a floating structure connected by a tension connector with adjustable length. Floating body cells are connected by the tension connector with adjustable length, and elastic buffer material is installed among the floating body cells; a pull force is borne by the tension connector; a pressure is borne by the elastic buffer material and the floating body cells; and a shear force is borne by an inclined tension connector which forms an angle with a connection surface. Both a rigid joint and a hinge joint of the combined floating structure have certain elasticity and can bear a large wave load. Because the length of the tension connector can be adjusted and the requirement on the manufacturing precision of the floating body cells is low, bigger floating body cells can be used so that a bigger floating structure can be combined. Because of being not welded together with the floating body cells, the tension connector can be changed so that the service life of the floating structure is not limited by the fatigue life of the connector.

The invention provides a method and equipment for correcting a three-dimensional image in a tiled integral imaging display (T-IID). The method includes: using a shooting unit to shoot a structured light image displayed on an LCD in a T-IID at a fixed position; using the shot structured light image to perform calibration on a geometric model of the T-IID, wherein the geometric model of the T-IID includes rotation and translation parameters of each lens array in the T-IID relative to the LCD; according to the calibrated geometric model of the T-IID, by simulating an optimal imaging process in the T-IID, generating a light model that satisfies the optimal imaging process in the T-IID; and using the generated light model to render an image of an elemental image array (EIA), thereby generating an EIA image capable of correctly displaying a three-dimensional image. The method and equipment can effectively remove three-dimensional image distortion caused by a position alignment error of an imaging display unit, and can reduce a requirement for manufacturing accuracy of system hardware at the same time, thereby cutting costs of system manufacture.

The invention discloses an emergent release device for ultralow temperature fluid handling equipment. The emergent release device comprises an upper ball valve, a lower ball valve, a valve on-off mechanism and a locking mechanism, wherein the valve on-off mechanism drives the two ball valves to be turned on or off synchronously, and the locking mechanism is arranged on the outer edge of the butt-joint faces of the two ball valves and used for controlling the two ball valves to be locked or released. The valve on-off mechanism comprises a four-connecting-rod mechanism installed between valve rods of the two ball valves and a driver installed on a valve rod base on one side of the two ball valves. According to the emergent release device, the valves can be independently turned off on the condition that a handling arm is not adopted, the sealing performance of the valves is good, and the valve on-off mechanism is simple in structure and convenient to operate; and when the two ball valves are released, the handling arm will not be hooked, and the accident that the handling arm collapses is eradicated.

The invention discloses a conformal compressing tool of a wing wallboard, and belongs to the technical field of digital aircraft assembly. The conformal compressing tool comprises a conformal frame, the conformal frame comprises a supporting frame, wallboard connecting parts and a wallboard compressing part, wherein the wallboard connecting part and the wallboard compressing part are installed onthe supporting frame, the face, where the wallboard compressing part exerts pressure, of a wallboard is a curved face adaptive to the face of a pressure bearing plate of the wallboard; the two or morewallboard connecting parts are arrayed in the wallboard heading at intervals; a pushing and pressing mechanism is arranged between the wallboard compressing part and the supporting frame and used forforcing the wallboard compressing part to move relative to the supporting frame and compressing the wallboard. The conformal tool is connected with the wallboard, not only wallboard rigidity can be improved, the wallboard and a wing rib skeleton can be compressed to improve the wallboard installing efficiency and quality, and the conformal compressing tool can be widely applied to the aircraft manufacturing field.

The invention provides a sensor for detecting particles in air and a manufacturing method of the sensor, as well as a detecting device comprising the sensor. The sensor is used for detecting particles in air, and comprises an upper part and a lower part which faces the inner side of the upper part and is fixed onto the upper part, wherein a particle screening device is arranged on the inner side of the upper part; a plurality of light source cavities and a plurality of detecting cavities are axially and symmetrically arranged on the upper part respectively; an air inlet and an air outlet which are penetrable and used for in-out of air to be tested are formed in the upper part; a circuit is formed on the inner side of the lower part; a plurality of light-emitting elements and a plurality of light-detecting elements are axially and symmetrically arranged on inner side of the lower part respectively in the range corresponding to the light source cavities and the detecting cavities; an axis is formed by the connecting line of the center of the air inlet and the center of the air outlet.

The invention relates to a full-automatic continuous filtering and filter pressing slag unloading machine comprising a filtering device, wherein the filtering device comprises a filter cartridge, a filtering stirring shaft and a first filtering medium; a liquid inlet is arranged on the top end of the filter cartridge; the filtering stirring shaft is installed in the filter cartridge through a sealing bearing, and a helical blade is arranged on the filtering stirring shaft; the first filtering medium is arranged between the inner wall of the filter cartridge and the filtering stirring shaft; a liquid outlet is arranged on the bottom end of the filter cartridge; and a press filtering device, the press filtering device comprises a press filter cartridge, a press filtering stirring shaft and a second filtering medium; a slag inlet is arranged on the top end of the press filter cartridge, and the slag inlet is communicated with the liquid outlet; the press filtering stirring shaft is installed in the press filter cartridge through a sealing bearing, and a helical blade is arranged on the press filtering stirring shaft; the second filtering medium is arranged between the inner wall of the press filter cartridge and the press filtering stirring shaft; and a slag outlet is arranged on the bottom end of the press filter cartridge, and an automatic resetting switch is arranged at the slag outlet. The full-automatic continuous filtering and filter pressing slag unloading machine provided by the invention can be conducted with continuous pressure filtration, can automatically feed and automatically discharge and unload slag and is consistently located at a thin layer filtering environment, so that the filtering speed is high, and the machine is operated under a complete sealed state, and the operation environment is excellent.

The invention proposes a system and a method for measuring aspheric interference based on reference surface of a spatial light modulator, relating to an interferometry system and an interferometry method for measuring the aspheric surface shape and belonging to the field of photoelectric detection. The measuring system of the invention comprises a laser, a collimating objective, a spectroscope, a reference lens, a compensator, a to-be-measured aspheric surface, an imaging objective and a CCD detector. The SLM is used as the reference lens for an aspheric interferometry system, defined as an SLM reference lens. The present invention also discloses a measuring method using an aspheric interferometry system. The technical problem to be solved in the present invention is to generate a non-planar wavefront equal to a partially compensated aspheric wavefront and achieves zero-interference measurement. While the system and the method inherit the advantages of the partially compensating method that requires lower precision on the designing and manufacturing of the compensator, the advantage of high accuracy of the zero-compensation interferometry method is also maintained. In addition, it is possible to avoid the introduction of mechanical phase shift error in a traditional interferometry system.

This invention relates to a new structure single chip silicon-base micro-condenser microphone in which, the vibration film is processed by high elastic mono-crystal silicon film, the back pole plate is made up of PI thick films, the diaphragm electrode and the back electrode are led out by concentrated boron buried electrode, only a metal layer with the thickness greater than 1 mum is processed on the hot-pressed feet, micro-acoustic holes are set on the back pole plate, a JFET source follower is integrated on the front of a mono-crystal silicon substrate forming vibration films to reach the aim of impedance transformation. The mono-crystal silicon film is released by HF vapor phase corroding technology, no adhesion occurs between the vibration film and the back pole plate to increase the rate of product greatly.