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

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 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 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 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 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 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 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 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.