80results about How to "Simple and safe structure" patented technology

The invention provides an air cooling heat dissipation thermoelectric cooler (TEC) electric refrigeration charge coupled device (CCD) Dewar which comprises a vacuum Dewar (1), a CCD detector (3), a TEC, an air cooling heat dissipation system (7) and a molecular sieve (5), wherein the CCD detector (3), the TEC and the molecular sieve (5) are arranged inside the vacuum Dewar (1), a cold end of the TEC is in heat conductance with the CCD detector (3), a hot end of the TEC is in heat conductance with the air cooling heat dissipation system (7), and the air cooling heat dissipation system (7) is connected with a vacuum Dewar cavity body (1) in a sealed mode. Due to the fact that the TEC and the molecular sieve are used for maintaining the technologies such as vacuum and air cooling heat dissipation in a long term to ensure low temperature requirements of a CCD in operation of the system, the air cooling heat dissipation TEC electric refrigeration CCD Dewar has the advantages of being large in a heat sink heat dissipation surface area, fast in temperature cooling speed, low in absolute refrigeration temperature, long in vacuum maintaining time, small in size, less in quality, convenient to install and control, capable of observing at any angle, simple in operation and maintenance and capable of being directly used for imaging and photometry of a astronomical telescope CCD lens.

The invention relates to an interventional operation robot slave hand end tube feeding device which is used for achieving axial feeding and circumferential rotation of a catheter and comprises a cylindrical hollow shell, an axis linear feeding mechanism and a circumferential rotation mechanism, the axis linear feeding mechanism and the circumferential rotation mechanism are arranged on a fixing plate in the shell, and the catheter penetrates in from center of left side panel of shell, passes through the axis linear feeding mechanism and the circumferential rotating mechanism and then penetrates out from the center of right side panel of the shell. Compared with the prior art, the device has the advantages that the device has two degrees of freedom, is safe and simple to operate and the like.

The invention belongs to the field of the tail gas treatment of a fuel cell, and relates to a catalytic treatment device and a catalytic treatment method for tail gas of a hydrogen-oxygen fuel cell. The catalytic treatment device for the tail gas of the fuel cell comprises a gas mixer, wherein an inlet of the gas mixer is respectively connected with a hydrogen outlet pipeline of a fuel cell anode end and an air outlet pipeline of a fuel cell cathode end, an outlet of the gas mixer is connected with a micro plate-type reactor, a passage plate which is provided with a hydrophobic modification Pt-Al2O3 catalyst coating is arranged inside the micro plate-type reactor, and the periphery of the micro plate-type reactor is provided with a heating system and a thermocouple for precisely controlling the temperature of the reactor. The iron-chromium-aluminum plate which is coated with the hydrophobic Pt-Al2O3 coating is adopted to catalytically treat the tail gas of the hydrogen fuel cell, and the tail gas of the hydrogen fuel cell is efficiently and simply treated under a damp atmosphere mainly by utilizing the narrow-slit flame-blocking effect of the micro plate-type reactor and the hydrophobic characteristic of the hydrophobic catalyst.

The invention discloses a mechanical enclosed test bench of a bevel gear. The test bench comprises a bevel gear box including a tested bevel gear group, an accompanied tested bevel gear group, and a shaft. The tested bevel gear group consists of a first tested bevel gear and a second tested bevel gear that are engaged and are perpendicular to each other. The accompanied tested bevel gear group includes a first accompanied tested bevel gear and a second accompanied tested bevel gear that are engaged and are perpendicular to each other; the first tested bevel gear and the first accompanied tested bevel gear are installed on the shaft. An angular contact ball bearing is installed between the first tested bevel gear and the first accompanied tested bevel gear on the shaft; and cylindrical roller bearings are installed at the two ends of the shaft. A first adjusting assembly for adjusting the axial position of the first tested bevel gear is arranged at the shaft. The test bench having a simple structure is installed conveniently; the performances are stable; the bearing capability of the shaft is large; and the engaging precision of the bevel gear is high; and the test bench is capableof testing the transmission performance of the bevel gear at a high speed.

The present invention relates to an arm and leg powered bicycle, comprising handle levers, a front wheel, a rear wheel, a handle shaft, supporting frames, pedals, a pedal shaft, front and rear sprockets and a chain belt, wherein the bicycle further includes an operating means for vertically rotating the handle levers, said member consisting of a handle rotation shaft, an operating rod or rods and a handle rotation shaft support, and a means for transferring the rotating force of the handle levers to a pedal shaft, said means consisting of a crank shaft, a rotating shaft, a flexible joint, a driving gear and a driven gear mounted on a pedal shaft. In the inventive arm and leg powered bicycle with such a construction, the mutual movement of both the handle levers and the pedals causes the vertical rotation of the handle levers by the work of the arms to cooperate synchronously with the movement of the pedals by the work of the legs, whereby the running speed of the bicycle can be doubled and the arm exercise can be conducted simultaneously.

The invention discloses a high-voltage electrostatic precipitator. The high-voltage electrostatic precipitator comprises a high-voltage generation module and electrostatic precipitation boards, and is characterized by further comprising a base and at least one mounting rod mounted above the base, wherein the high-voltage generation module is mounted in the mounting rod, the electrostatic precipitation boards are distributed on the mounting rod and connected with the high-voltage generation module through wires. The high-voltage electrostatic precipitator can be made in a simulation tree shape, is simple in structure, safe, attractive and elegant, can be combined organically with urban or home environment and can also have a decorative function; the electrostatic precipitator is long in service life and low in energy consumption, can absorb and precipitate suspended particulates and PM 2.5 in urban public places and home in an omnibearing and three-dimensional manner, and has good performance of wind resistance, collision resistance and bending resistance; and further, a solar panel is adopted for power supply, so that the electrostatic precipitator is independent from external power supply while saving the energy, and the application field of the electrostatic precipitator is broadened effectively.

A safety lock mechanism mounted at a trigger switch handle of a miter saw to face toward a switch which includes a switch button pivotally mounted at the trigger switch handle to face toward the switch, and a safety lock connected to the switch button and providing an engaging portion and movable between a locking position where the engaging portion engages into the trigger switch handle to lock the switch button to the trigger switch handle and an unlocking position where the engaging portion is disengaged from the trigger switch handle for allowing the switch button to be moved relative to the trigger switch handle to trigger the switch. Thus, the arrangement of the safety lock prevents the user from accidentally forcing the switch button to trigger the switch, enhancing the operational safety of the miter saw.

The invention discloses a trestle construction method for bare rock geology. The trestle construction method mainly comprises the following steps of construction preparation, abutment construction, shore first pier enlarged foundation construction, first pier steel pipe pile construction, first construction platform construction, secondary pier structure foundation construction, secondary pier structure reinforcement construction, extension of a construction platform of the next stage and repeating of the steps. Meanwhile, common parts and construction methods thereof are optimized. And the trestle construction efficiency is improved. The method is applied to the field of trestle construction.

The invention relates to a batch valve core air-tightness test device, which is characterized in that the device comprises a press machine body (1), an upper die plate (2), a lower die plate (3), an exhaust plate (4) and a water tank (5); the upper die plate (2) is fixed on the upper working surface of the press machine body (1), the water tank is arranged on the lower working surface of the press machine body (1), the exhaust plate (4) is arranged above the water tank (5), a plurality of exhaust pipes (4.1) are evenly arranged on the exhaust plate (4), the exhaust pipes (4.1) are inserted below the surface of liquid in the water tank (5), a plane mirror (5.1) is arranged at the bottom of the water tank (5) and at least one observation surface of the water tank (5) is made of a transparent material. The batch valve core air-tightness test device has the advantages that the structure of the entire test bench is simple, the test device is easy to operate and the test efficiency is high.

The invention discloses a bicycle component, and aims to provide a simple internal-locking wire-control folding system which can simultaneously control two internal-locking folders to realize the function of safe locking and unlocking. The internal-locking wire-control folding system comprises a lifting lever assembly, a deconcentrator and two folder assemblies, wherein the deconcentrator is connected with the lifting lever assembly through a first wire tube; the two folder assemblies are connected with the deconcentrator respectively through a second wire tube and a third wire tube; each folder assembly comprises a lower joint and an upper joint, and the lower joints and the upper joints of the two folder assemblies can respectively hinged together and cooperatively locked with each other; the side of the upper joint is provided with a locking pin; the inner side of the upper end of the locking pin is provided with an upper locking conical slope and a lower locking conical surface; and the lower joint is provided with a joint opening conical surface locking groove which cooperates with the locking block slope and the locking block conical surface. The invention breaks through the traditional control mode, can simultaneously control the functions of unlocking and locking of two folders, is different from the traditional control mode for folders, and does not need to install a handle on the folders, thereby enhancing the aesthetic property and practicality of the folders.

The embodiment of the invention discloses a portable foldable unmanned aerial vehicle, which relates to the technical field of unmanned aerial vehicles. The portable foldable unmanned aerial vehicle comprises lifting wing flaps 1, ailerons 2, an engine 3, rib folding hinges 4, a wing 5, a wing 6, a wing 7, a wing 8, a wing 9, a wing 10, an equipment cabin 11, an equipment cabin 12, back beams 13, wing ribs 14, front beams 15, beam folding fixing bolts 16, an airbag cabin 17, an airbag skin 18 and a skin 26. The portable foldable unmanned aerial vehicle disclosed by the embodiment of the invention is put into backpacks in a folded manner to be convenient to carry; therefore, the portability of the portable foldable unmanned aerial vehicle is sufficiently represented. Meanwhile, through adoption of the aerodynamic layout of flying wings, the portable foldable unmanned aerial vehicle has the advantages of large lift-drag ratio, high structural strength, small resistance, convenient carrying, short takeoff time and simple structure.

The invention relates to an unmanned aerial vehicle, in particular to a military unmanned aerial vehicle with portable united wings. According to the military unmanned aerial vehicle with portable united wings, a wing stiffener and a sliding block are arranged on a fuselage, a propeller is arranged at the tail end of the fuselage, and a vertical tail is arranged at the tail end of the fuselage; one end of the front wing is hinged to the wing stiffener, and the other end of the front wing is hinged to one end of a rear wing; the other end of the rear wing is hinged to the sliding block; the sliding block slides along the tail end of the fuselage to one side close to the wing stiffener, so that the wings are driven to be close to the fuselage; the vertical tail is hinged to the fuselage, and can be levelly put at the tail end of the fuselage or perpendicular to tail end of the fuselage. According to the military unmanned aerial vehicle with portable united wings provided by the invention, the portability of a multiple-spindle aircraft and favorable flight performance of a fixed wing aircraft are fully used. The unmanned aerial vehicle is put in a knapsack after being folded, so that the unmanned aerial vehicle is convenient to carry, and the portability that the unmanned aerial vehicle is easy to carry is fully reflected. Before flight, the unmanned aerial vehicle is taken out from the knapsack, the unmanned aerial vehicle is thrown manually to fly, and in the manual throwing process, the wings and the vertical tails are ejected to be in the flight state, and land in the sliding manner.

The invention relates to a dam joint structure and a construction method thereof. The invention solves the technical problem of providing a dam joint structure which has no influence on railway and highway operation and meets the requirements of a hydropower engineering pivot and a construction method thereof, is aimed at solving the problems of basic strength and seepage prevention of the dam joint structure under a poor geological condition, shortening construction period, simplifying construction process and reducing residue sites, contributes to soil and water conservation, and saves engineering investment. For solving the problem, the method adopts a technical proposal that: the dam joint structure is provided with adjacent buildings, a road, a weathered rock and a gravel dam body,; and the joint structure of the dam is characterized by constructing a concrete core wall and a concrete anti-seepage wall in the middle of the dam body and between the adjacent buildings and the road to form the dam joint structure at a connecting position. The dam joint structure and the construction method thereof are applicable to water conservancy and hydropower engineering.

The invention provides an onshore test device and method for a submersible lifting system, and the device comprises a tool portal (1), a guide tool (3), a rolling drive mechanism (4), a pitching drivemechanism (5), a weight tray (6), and weights (7). The tool portal (1) is used for installing the submersible lifting system. The guide connection tool (3) is used for hanging a mooring rope (205) ofthe submersible lifting system, the upper end of a pull rod (602) of the weight tray (6) penetrates through a pull rod mounting hole (306) in a bottom plate (303) of the guide connection tool (3) andis provided with a cross bar (603) to be hung on the bottom plate (303), and the weights (7) can be hung on the weight tray and is used for simulating the mass of the submersible. According to the land test device and method for the submersible lifting system, the rolling driving mechanism and the pitching oscillation stopping mechanism are arranged, the actual marine working condition can be perfectly simulated, and the land test device and method are mainly applied to verifying the function and load capacity of the submersible lifting system.

The invention discloses an adjustable biopsy sampling device. The adjustable biopsy sampling device comprises a base, an inner sampling needle, an outer sampling needle, an adjusting mechanism, a loading mechanism and a triggering mechanism. The adjusting mechanism can adjust the transmitting distance of the inner sampling needle and the outer sampling needle. After the transmitting distance is adjusted, the inner sampling needle and the outer sampling needle are loaded through the loading mechanism so that the inner sampling needle and the outer sampling needle can be in a to-be-transmitted state. In the to-be-transmitted state, the inner sampling needle and the outer sampling needle are transmitted into tissue to be sampled respectively to complete sampling through triggering of the triggering mechanism and under the common action of an inner needle transmitting spring, an inner needle transmitting block, an outer needle transmitting spring and an outer needle transmitting block. By means of the adjustable biopsy sampling device, a user can adjust the sampling length as needed, the effect of biopsy cannot be influenced when the surplus tissue is taken out, and the injury to a patient is relieved.

The invention discloses a chair and a chair control system. The chair comprises a seat and a backrest, wherein the seat is provided with a sensor, a chassis of the seat is provided with a switch structure triggered by the sensor, a control circuit connected with the switch structure, a power source connected with the control circuit and a push-and-pull mechanism connected with the power source, and the push-and-pull mechanism is connected with the backrest; and when a person sits on the seat, after the sensor senses the situation, the sensor triggers the switch structure to close, so that the control circuit is power-on and starts the power source to provide power for the push-and-pull mechanism, the push-and-pull mechanism pulls the backrest to move forwards, and when the backrest is pressed against the back of the person and blocked, the control circuit is power-off and locks the current position. According to the utility model, the automatic adjustment of the backrest can be realized; and the chair is safe and simple in structure, safe, effective and labor-saving.

The present invention relates to an arm and leg powered bicycle, comprising handle levers, a front wheel, a rear wheel, a handle shaft, supporting frames, pedals, a pedal shaft, front and rear sprockets and a chain belt, wherein the bicycle further includes an operating means for vertically rotating the handle levers, said member consisting of a handle rotation shaft, an operating rod or rods and a handle rotation shaft support, and a means for transferring the rotating force of the handle levers to a pedal shaft, said means consisting of a crank shaft, a rotating shaft, a flexible joint, a driving gear and a driven gear mounted on a pedal shaft. In the inventive arm and leg powered bicycle with such a construction, the mutual movement of both the handle levers and the pedals causes the vertical rotation of the handle levers by the work of the arms to cooperate synchronously with the movement of the pedals by the work of the legs, whereby the running speed of the bicycle can be doubled and the arm exercise can be conducted simultaneously.

Various methods of producing a security document or article including a diffractive optical microstructure are disclosed. One method includes applying an opacifying layer (102) to at least one surface of a transparent substrate (100). An area of the opacifying layer (102) is exposed to laser radiation (108) to ablate apertures (110) in selected portions of the opacifying layer (102), thereby forming a diffractive optical microstructure (112) on the surface of the substrate (100). The laser radiation may be patterned prior to exposing the opacifying layer (102), for example by passing the radiation through a mask (104). Alternatively, a focussed or collimated laser beam (206) may be directed onto the selected portions of the opacifying layer (102). Laser radiation may be directed onto the opacifying layer (102) either directly, or through the transparent substrate (100). Security documents or articles made in accordance with the method are also provided.

The invention discloses a turnover mechanism. The turnover mechanism comprises a rotary disk provided with a containing through hole in a radial direction, a rotary base plate provided with an installation groove in the middle and a motor for driving the rotary disk to rotate, wherein the rotary disk is embedded in the installation groove; an upper side wall of the installation groove is providedwith a feed-in through hole which is coaxial with the containing through hole, and the diameter of the feed-in through hole is equal to that of the containing through hole; the turnover mechanism hasa simple structure, the rotary disk is adopted to be embedded in the rotary base plate, a double-end bolt is placed in the containing through hole, a clamping component does not require to be adopted,and the structure is simple; during turnover, the feed-in through hole and the containing through hole are stagger to form an airtight space, and the double-end bolt cannot fall.

An insertion mechanism for a cannula includes a cannula housing, a displaceable cannula, at least one cannula holder, an insertion spring, a triggering element, and a safety device. The safety device, in a secured state, holds the triggering element in a blocked position against a force of the insertion spring and, in a released state, releases the triggering element such that the triggering element is movable into a release position by the force of said insertion energy store and the at least one cannula holder is able to move relative to the cannula housing, driven by the insertion energy store, so as to trigger or implement an insertion movement or insertion. To reach the released state, the safety mechanism is heatable by a heating element and softened and / or weakened with respect to its mechanical carrying or holding capacity, or severed or at least partially or completely melted.

The invention discloses an environment-friendly off-line zinc dissolving treatment device. The environment-friendly off-line zinc dissolving treatment device comprises a workbench and a zinc-plated component. A rectangular groove penetrating through the workbench in the front-back direction is reserved in the upper surface of the workbench, and transmission rollers are rotatably connected to the two ends of the rectangular groove. A special conveying belt is wound on the portion between the outer circumferential walls of the two transmission rollers. A fan is fixed to the position, close to the middle, of the side face of the workbench through bolts, and a spraying pipe is inserted into the air outlet end of the fan. A sliding clamping block is slidably connected to the position, close tothe edge, of the side, away from the fan, of the workbench. A supporting pipe is welded to the top end of the sliding clamping block. A C-shaped steel sliding rail which is open downwards is fixed tothe top end of the supporting pipe through bolts. According to the environment-friendly off-line zinc dissolving treatment device, high-speed air flow sprayed out of the spraying pipe at the bottom ofthe conveying belt can rapidly act on the surface of the zinc-plated component through the special conveying belt, so that dust adhering to the lower surface of the zinc-plated component is completely removed, and dust removed through bristles can be blown into a conical box at the top end at the same time.

The present invention relates to a hydraulic system having at least two piston-in-cylinder units, at least one equalization line for the pressure equalization between the piston-in-cylinder units and the control pistons, with one respective control piston being associated with a connection of a piston-in-cylinder unit and with at least one 2-way flow regulation valve with a check valve function being in communication with the at least one equalization line.

The invention relates to an automatic water feeding system. The automatic water feeding system comprises an orbit, calling devices, a trolley and a beverage device, wherein the orbit is arranged at the periphery of a round table; the calling devices corresponding to seats are arranged on the round table; the beverage device is fixedly arrange on the trolley; the trolley comprises a drive module and a main control module; each calling device sends out a signal; and the main control module controls the drive module to move and arrive the calling device which sends out the signal along the orbit; the beverage device is fully filled with water, and the beverage device is driven by the trolley to be transported to the calling device which sends out the signal so as to provide the convenience for persons on corresponding seats for drinking, so that the labor of service staff can be replaced; the labor is saved; drive equipment with high power is avoided; and the system has a simple and safe structure.

The invention discloses a method for preparing an electrode material, the electrode material, an electrode and a battery. According to the preparation method, an iron(II) oxide and iron composite electrode material which is of a hollow spherical nanostructure can be obtained. The method comprises the steps of first evenly dissolving iron salt, sodium acetate and polyethylene glycol in ethylene glycol to obtain a mixed solution; placing the mixed solution in a reaction kettle to undergo hydrothermal reaction; cleaning the obtained product and performing freeze drying; finally placing the product in protective atmosphere to perform roasting to obtain the iron oxide and iron composite electrode material which is in a black powder shape, and utilizing the electrode material to prepare the electrode and the battery. The method for preparing the electrode material has the advantages that sources of raw materials are wide, and the preparation process is simple and safe, green and free of pollution; and the prepared iron(II) oxide and iron composite electrode material has very good structural stability and monodispersity and has good cycle life and rate capacity.

The invention relates to a non-avoidance stereoscopic parking device and belongs to the technical field of stereoscopic parking devices. The non-avoidance stereoscopic parking device comprises bases,large arms, lifting hydraulic cylinders, connecting pieces, platform arms and a parking platform, wherein the large arms, the lifting hydraulic cylinders and the connecting pieces are all arranged onthe bases; the connecting pieces are arranged on the upper sides of the large arms; the lifting hydraulic cylinders are arranged on the lower sides of the large arms; one ends of the large arms are hinged to the bases and the other ends of the large arms are hinged to the lower ends of the platform arms; one ends of the connecting pieces are hinged to one ends of the bases, and the other ends of the connecting pieces are hinged to the upper ends of the platform arms; the large arms, the bases, the connecting pieces and the platform arms form parallelogram mechanisms by being arranged around; one ends of the lifting hydraulic cylinders are hinged to the bases, and the other ends of the lifting hydraulic cylinders are hinged to the large arms; the lifting hydraulic cylinders are equipped with lifting self-locking mechanisms; and the parking platform is fixedly connected with the platform arms. The stereoscopic parking device of the invention has the advantages of simple structure, smallsize, low cost and wide application range.

The invention relates to the field of bicycle parking devices, in particular to a rotatable bicycle parking device. The rotatable bicycle parking device comprises a bottom bearing disc, an angular contact ball bearing mounted in the middle of the bottom bearing disc, an upper bearing support, a lower bearing support and a plurality of vertical parking frames, each vertical parking frame comprisesa main body rod piece, an elastic rope and a buckle device fixed to the main body rod piece, the buckle devices are connected with the main body rod pieces through the elastic ropes and can slide up and down along the main body rod pieces, and wheel clamping devices are arranged on the buckle devices. According to the parking device, the vertical parking frames pulled by the elastic ropes are designed, automatic rising of bicycles can be achieved under traction of the elastic ropes, the space utilization rate is greatly increased by combining vertical parking of the bicycles and rotatable parking and taking of the bicycles, overall rotation of the device can be achieved through the angular contact ball bearing installed on the bottom bearing disc, and the device can be used for areas suchas wall corners and dead angles where a traditional parking mode is inconvenient.