228results about How to "Avoid damage phenomenon" patented technology

Disclosed is a fetching device of test tubes for cell cultivation. The fetching device of the test tubes for the cell cultivation is used to facilitate storage and fetching of the test tubes. The fetching device of the test tubes for the cell cultivation comprises a tube box and a bottom seat, wherein a plurality of test tube cavities are formed along the circumferential direction of the tube box, a fixer is arranged below each test tube cavity, a baffle is arranged at the bottom of each test tube cavity, an ejector rod is installed in each baffle in slide mode, the lower portion of each ejector rod passes through each fixer, and then stretches downwards, a support plate and an installation plate are arranged on the outer wall of each ejector rod, an open end of each test tube sleeves each ejector rod, and is contacted with each support plate, each installation plate is located in each fixer, a spring which sleeves each ejector rod is arranged between each baffle and each installation plate, the upper portion of the bottom seat is connected with the lower portion of the tube box, a rotation shaft and a drive assembly which drives the rotation shaft to rotate are arranged on the bottom seat, a rotation rod is fixed on the upper portion of the rotation shaft, a shift slice is arranged at the free end of the rotation rod, and a bevel contacted with the bottom of each ejector rod to act is arranged at the upper end of the shift slice. The fetching device of the test tubes for the cell cultivation facilitates the storage and the fetching of the test tubes, and simultaneously avoids a damage phenomenon caused by exposure of the test tubes.

The invention discloses a door of drum-type washing machine combined with one side of a housing with an opening at the front thereof through hinges and rotated left and right to open or close the opening. The door comprises following parts: a first extending part extending and protruding forwards on the upper part of the housing, a first hinge member connected the upper part of the housing with the upper part of the door and rotated the door, a second extending part extending and protruding forwards on the lower part of the housing, and a second hinge member connected the lower part of the housing with the lower part of the door and rotated the door, and extending with the first extending part side by side and the extending length of which is longer than that of the first extending part. The door can be inclined to rotate by the invention and the appearance is beautiful.

The invention relates to a waste transfer device in a medical experiment. The waste transfer device has the advantages that operation is convenient and simple, and waste can be conveniently moved in the experiment; the angle of rotating clamping plates can be adjusted so as to be used for collecting the sharp waste with irregular surfaces; the rotating clamping plates are in a vertical state, whenthe upper ends of rotating clamping plate driving connecting rods are stored in containing grooves, the rotating clamping plates and vertical clamping plates can clamp containers containing waste liquids in different specifications, so that the risks that cleaning workers are burnt due to the fact that the waste liquids in the containers shake and are sprinkled out in the manual transferring process, the risk that a cleaning worker burns and the like is avoided; meanwhile, the tightness degree of the device is adjusted by adopting a manual control mode, so that the phenomenon that test instruments are damaged due to too large loosening or clamping force is avoided; and therefore, the certain protection performance on the experiment instruments is achieved, and the practicability relatively good. The waste transfer device is characterized in that a clamping control piece is slidably connected to the upper end of a rectangular sliding frame, the number of the vertical clamping plates istwo, and the two vertical clamping plates are symmetrically and slidably connected to the left end and the right end of the rectangular sliding frame.

The invention provides a production method for a power device terminal ring, which comprises the following steps: a silicon substrate and a field oxidizing layer of the power device are sequentially arranged on a semiconductor substrate from down to up; a terminal ring photolithographic window is formed in the mask layer of the field oxidizing layer through photolithographic technology; part thickness of the field oxidizing layer in the terminal ring photolithographic window is etched through dry etching, thereby forming a first terminal ring window; the field oxidizing layer in the first terminal ring window is subjected to wet etching, thereby forming a second terminal ring window; the mask layer is removed; the second terminal ring window is not subjected to annealing technology before boron ions are injected; and the terminal ring is formed on the silicon substrate of the power device. A power device terminal ring further provided by the invention is formed through the combination of the dry etching and wet etching, solves the problem that a traditional manufacturing technique adopting either the dry etching or wet etching to form the terminal ring in the field oxidizing layer is unstable, improves the reliability of the product, has strong technical robustness, and is suitable for mass production.

The invention discloses an end portion double-control device for a rotating mechanism. The end portion double-control device for the rotating mechanism comprises a bottom installation base plate internally provided with a plurality of main bolt holes. According to the end portion double-control device, control is carried out through a mechanical principle, the service life of the end portion double-control device is long, the level of the effect by the external environment is low, the manufacturing cost and the maintaining cost are both relatively low, and the practicality is high; moreover, the control capacity for controlling the one-way rotating capacity and the largest rotating speed of the rotating mechanism through the flowability of liquid rotating of the device is flexible control,and therefore the control capacity is high; the device is provided with a pipeline installation threaded structure rotary maximum liquid flowing speed control mechanism, the maximum speed of the liquid during flowing can be effectively controlled, and therefore the phenomenon that the speed is too large is effectively prevented; in addition, the device is provided with a spherical structure sizecontrollable liquid one-way flowing mechanism, the one-way flowability of the liquid can be effectively controlled, and the one-way rotation capacity of the device is controlled; and the device is provided with a spiral spring elastic compression type maximum liquid pressure effective control mechanism.

The invention discloses a current limiting circuit of laser bias current, which comprises a bias current driving control circuit, a bias current driving circuit, a sampling resistance which is connected in series between the bias current drive circuit and the laser and also connected to an output end of a proportional amplifying circuit; a proportional amplifier, the output end is connected with the cathode of a comparator, which is used to change the current of the flowing sampling resistance into the corresponding voltage; the comparator, the anode is connected with a reference voltage, the output end is connected to a start circuit for comparing the cathode and the anode; the start circuit, the output is connected with the input end of the comparator, the output end is connected with a bias current driving control circuit for turn on or off the current limiting circuit according to the input from the input end. Therefore, the current limiting circuit of the laser bias current adopting the invention can prevent the damage to the laser caused by too large bias current effectively happening.

The invention relates to a well wall body module which comprises a circular arc-shaped front template (1), a circular arc-shaped rear template (2), a first rib (3) and a second rib (4). The front template (1) and the rear template (2) are coaxial, a through hole (5) is arranged at the middle part of the well wall body module, and semi-holes (6) are arranged at the two ends of the well wall body module. When the modules are in connection, the semi-holes (6) at the end parts of adjacent modules form spliced holes (7). Circle center included angles between the through hole (5) and the two vertical side faces of the spliced holes (7) are equal. As the dimension relationship of the modules is optimized, the parts of the front template (1) and the rear template (2) protruding out of the first rid (3) and the second rib (4) cannot be too long, thereby avoiding the templates from being cracked and damaged. When the modules are adopted to build a wall body in a seam pressing manner, the spliced holes (7) at the end parts of the adjacent modules on the same layer form pouring holes which are uniform in both shape and size with the through holes (5) at the middle parts of the adjacent modules, and concrete poured into the pouring holes form intensity components which are uniform in both shape and size in the pouring holes, thereby leading the intensity of the wall body to be uniform.

The invention discloses an anti-caving supporting frame for underground work. The anti-caving supporting frame for the underground work comprises a bottom supporting plate and a top supporting plate.A high-pressure liquid supporting principle and a lever principle are used, the top supporting plate is enabled to be located in a trend of one side moving upwards, so that the side of the top supporting plate is more closer to the work surface, effective supporting strength is higher, boundedness is small, and safety performance is better; the anti-caving supporting frame for the underground workis provided with a spiral spring conflicting type maximum liquid strength control mechanism, and occurrence of a phenomenon of part damage caused by excessive pressure is prevented; in addition, theanti-caving supporting frame for the underground work is provided with a piston seal type liquid pressure drive mechanism, and directional drive is realized under the action of liquid; and the anti-caving supporting frame for the underground work is provided with a spherical size structure limiting type part connecting structure, two parts can be connected, and meanwhile, activity of the two partsin a connecting part cannot be affected.

The invention discloses a negative pressure vibration type dredging device for blocking a pipeline. The negative pressure vibration type dredging device includes a main hollow shell. Anegative pressure state caused by air extraction is used to linka blocked part inside the pipeline, and then a piston part is used to move in negative pressure space, and thus making a blocking object of the locked part loosen in a constant shock, so thatan initial dredging function is achieved as an initial dredging to use under an emergency state. The device has an elastic longitudinal cushioning support mechanism of a helical spring, and an elastic support under the action of the helical spring is achieved, so that adsorption and expansion capacities are achieved. In addition, the device has a piston typeup-down micro air pressure link mechanism, and under the negative pressure state and under an electromagnetic principle action, an internal air state linkage is achieved, so that vibration of the blocking object is driven.

The invention discloses a direct-reading photoelectric sensor and a metering device thereof. Due to the adoption of a photoelectric principle, no contact exists between a character wheel and a signal acquisition device during the rotation of the character wheel, and the metering of a gas meter is not influenced; and phenomena, such as fatigue and damage of the device, produced due to the contact can be prevented. A direct-reading meter reading system greatly saves electric energy consumption due to no power consumption at ordinary times. The direct-reading photoelectric sensor comprises a plurality of photoelectric panels, a plurality of character wheels, a plurality of carry gears and a master control board, wherein both surfaces of each of the plurality of photoelectric panels are provided with symmetrical light emitting tubes and light receiving tubes respectively; the light emitting tubes and the light receiving tubes of every two adjacent photoelectric panels are opposite to each other; the plurality of character wheels are arranged between every two adjacent photoelectric panels respectively; a wheel disc of each character wheel is provided with a cambered non-light tight groove which is concentric with the wheel disc; the plurality of carry gears are arranged between every two adjacent character wheels respectively and engaged with wheel rims of the character wheels on two sides; and the master control board is in signal connection with the plurality of photoelectric panels.

The invention discloses a bag taking and mouth prop-open device and method suitable for single layer or multilayer paper fruit bagging. The device comprises a device bracket, a bag supplying mechanism, a bag taking and mouth prop-open hand claw and a hand claw driving mechanism, the hand claw driving mechanism and the bag supplying mechanism are respectively arranged on the device bracket, and thebag taking and mouth prop-open hand claw is arranged on the hand claw driving mechanism; the bag taking and mouth prop-open hand claw is arranged above the bag supplying mechanism, in the bag takingand mouth prop-open hand claw, a guiding rod passes through the center of an upper slide bushing and the center of a lower slide bushing, and the upper end of the guiding rod is fixed to the hand clawdriving mechanism; a limit stop block is fixedly connected with the lower end of the guiding rod, and three finger supporting components are symmetrically distributed around a center shaft of the guiding rod. The method comprises the steps that the bag supplying mechanism supplies fruit bags, the hand clamp driving mechanism drives the bag taking and mouth prop-open hand claw to keep a closed state and reach inside a fruit bag, and then the fruit bag is taken out, and the bag taking and mouth prop-open hand claw stretches to prop open the fruit bag mouth. According to the bag taking and mouthprop-open device and method, the action is simple in the bag taking and mouth prop-open process, the efficiency is high, the control is easy, the cost is low, and the device and method are better applicable to the agriculture requirements for the multilayer paper fruit bagging.

The invention discloses an optical fiber airtightly leading out method for a GIS cavity, and provides a scheme for leading out a tail fiber of an optical element in GIS application. In the scheme, the tail fiber of the optical element in the GIS cavity is subjected to metal packaging, and a metal packaging structure comprises a metal optical fiber, a metal pipe and the like; the metal pipe passes through optical fiber through holes on a mounting flange and an optical fiber leading out flange positioned on the GIS cavity in turn, and the optical fiber through holes are sealed and cured by epoxy resin glue; and the tail fiber leading out parts of the metal optical fiber and the metal pipe are provided with protective devices additionally. In the method, the metal optical fiber packaging technology is applied to the optical element in the GIS cavity of a power system for the first time, the airtightness problem generated when the optical fiber of the GIS cavity is led out is effectively solved, stress applied to the optical fiber is reduced, the balance of the stress of the optical fiber is ensured, the pressive strength and the insulating property of the GIS system are ensured, and the reliability of the GIS system is improved.

The invention discloses a one-piece Chinese-style armored door which is composed of a door frame, a door leaf, a door lock side covering edge, a hinge side covering edge, a door lock, a hinge and a door core. A two-piece Chinese-style armored door which is composed of a door frame, a child door leaf, a mother door leaf, a door lock side covering edge, a hinge side covering edge, a door lock, a hinge, a child door core and a mother door core. A manufacture and installation process of the one-piece Chinese-style armored door comprises the steps of manufacturing the door frame, manufacturing the door core, manufacturing the covering edges and a cover plate, assembling the door frame and the door core, manufacturing a veneer and assembling the veneer. A manufacture and installation process of the two-piece Chinese-style armored door comprises the steps of manufacturing the door frame, manufacturing the child door core and the mother door core, manufacturing the covering edges and a cover plate, assembling the door frame and the door core, manufacturing a child veneer and a mother veneer and assembling the veneers. By the adoption of the one-piece Chinese-style armored door or the two-piece Chinese-style armored door, the problem that door sheets are damaged in the cross construction process is solved; secondary waste caused by replacement and maintenance of a damaged door set is avoided, and environmental protection is facilitated; production and construction procedures are simplified, labor cost is reduced by 40%, and leakproofness, the sound insulation effect and the heat insulation effect are good.

The invention discloses a special sampling device for gastrointestinal tumor biopsy tissues, and specifically relates to the field of medical technology. The special sampling device comprises a supporting base, wherein the upper surface of the supporting base is embedded with a rotating mechanism; a vertical frame is arranged above the supporting base along the vertical direction; a group of guide grooves are formed in the side surface of the vertical frame along the vertical direction; and a lifting mechanism is mounted inside the vertical frame. Through the arrangement of the rotating mechanism, the lifting mechanism and a sampling mechanism, the device is convenient for medical workers to fix, the stability of the device in the operational process is guaranteed, the phenomenon that the device causes damage on a human body caused by shaking of the medical workers is avoided, the operation of the medical workers is facilitated, the sampling efficiency is improved, the mode of tissue sampling that food enters into the human body through the esophagus is changed, direct sampling is carried out at the position of a tumor tissue opening, the comfort level of sampling is improved, and the device has higher actual and application values and is convenient for popularization.

The invention discloses an efficient charging pile for a new energy vehicle, and relates to the technical field of automobile charging piles. In order to improve the safety during charging, The charging pile specifically comprises two main bodies symmetrically installed on a base, operation screens are arranged on the outer walls of one sides of the two main bodies correspondingly, second supports are fixed to the outer walls of the adjacent sides of the two main bodies through screws, handles are clamped to the second supports correspondingly, the handles are connected into internal circuits of the main bodies through roll type charging wires, and charging heads are arranged at one ends of the handles; and the circumferential outer wall, close to the charging head, of the handle is in threaded connection with a protective cover. By arranging the protective cover, the annular air cushion and other structures, the protective cover can be rotated to the handle through threads according to needs, then the charging head and a charging port of an automobile are protected, the automobile charging device is particularly suitable for external rainy and snowy weather, water can be effectively prevented from entering, and the size of the annular air cushion can be adjusted through the air bag according to actual conditions; therefore, the sealing performance is improved.

The invention discloses a rapid hydraulic type wood pile tamper comprising a main body shell, wherein a driving motor used as an output power source has an objective fast impact effect, then, a liquidused as a connecting medium has the characteristics of low buffering property and low kinetic energy loss, the kinetic energy of a power source can be greatly utilized, moreover, the overall mass ofthe device is quite small, the structure is relatively simple, therefore, the lifetime limitation is relatively small, and the cost is small; the device is provided with a spiral spring elastic abutting type liquid buffer resetting mechanism, the maximum impact pressure of the internal liquid can be controlled, meanwhile, the liquid is reset, and normal operation of the tamping work is guaranteed;in addition, the device is provided with a piston body sealing ring type end liquid driving mechanism, and the driving effect can be achieved under the action of a certain liquid; and furthermore, the device is provided with a spring body ring array setting type maximum rotation force control mechanism, and the maximum rotation strength can be controlled.

The invention provides a carbon fiber composite core wire crimping and connection process and a crimping device. The process comprises the following steps: a fitting with a cavity sleeves the core rod end part of a to-be-crimped and connected wire; a preset pressure is applied to the fitting through a crimping device to enable the fitting to be deformed plastically and to sleeve and press the core rod end part of the to-be-crimped and connected wire. The preset pressure is applied to the fitting sleeving the wire through the crimping device to enable the fitting to press the wire tightly, the length of the fitting for wire connection can be shortened effectively, the length of a connection pipe protection device is shortened, the construction cost is reduced, and damages to the carbon fiber composite core wire when the connection pipe passes across a pulley can be avoided.

The invention provides a precision power supply instrument damp-proof storage box, and belongs to the technical field of power equipment. The storage box comprises a box body, a box cover arranged atthe top of the box body, a bracket arranged inside the box body and used for supporting an instrument, and a plurality of partition plates, wherein the cavity above the bracket is partitioned into a plurality of instrument storage cavities, the bottoms of the partition plates are perpendicularly connected with the bracket, the tops of the partition plates abut against the bottom wall of the box cover, a containing cavity is formed inside, a first drying agent is arranged inside the containing cavity, and the containing cavity is communicated with the instrument storage cavities through first vent holes formed in the side walls of the partition plates; a drying box is further arranged inside the box body, the drying box is located below the bracket, a second drying agent is arranged insidethe drying box, the containing cavity is communicated with the drying box, and a third vent hole communicated with the drying box is formed in the bracket. According to the precision power supply instrument damp-proof storage box, the technical problem that the damp-proof effect of an existing instrument storage box is poor is solved.

The invention discloses a crystal expander for LED production, which comprises a working platform, a foot switch is fixedly connected to the lower end of the cable, a photoelectric protector is fixedly installed on the upper surface of the working platform, and the upper surface of the working platform A first pressure-bearing platform is fixedly installed near the rear end of the photoelectric protector, and a second pressure-bearing platform is fixedly installed on the side of the upper surface of the working platform close to the first pressure-bearing platform. The lower surface is fixedly installed with a mobile shock absorber. The invention can further improve the stability of the crystal expander when it is working normally without affecting the normal movement of the crystal expander through the shock-absorbing mobile device; through the photoelectric protector, it can protect the crystal expander when the crystal expander is in normal use. The operator's limbs are protected; the structure is scientific and reasonable, safe and convenient to use, simple in structure, easy to operate, and equipped with a foot switch, making the crystal expander more suitable for the field of LED processing and production.

The invention discloses an anti-collision cleaning mechanism for a reaction cup. The anti-collision cleaning mechanism comprises an elution arm and an elution unit vertically arranged on the elution arm, wherein the elution arm is provided with an anti-collision sensor. The elution unit comprises a pin fixing base, a pin guide base and an elution pin. The elution arm comprises a floating plate and a fixed plate which are overlaid up and down, buffering anticollision mechanisms are arranged between the floating plate and the fixed plate and between the floating plate and the pin fixing base, the anti-collision sensor is arranged on the fixed plate, and the floating plate is provided with a trigger piece for triggering the anti-collision sensor. According to the anti-collision cleaning mechanism, under the protection of the buffering anticollision mechanisms, the phenomena that the elution pin is subjected to collision and damage can be effectively avoided.