30results about How to "Meet the experimental needs" patented technology

The invention relates to a gyrator and method for plant microgravity effect simulation, the gyrator comprises a main body box and a movable light source, the main body box comprises a plurality of modules spliced in series, the modules are provided with a plurality of clamps, and the clamps are used for placing plant culture containers and driving the plant culture containers to rotate; the movable light source is arranged on the front side of the main body box, the distance between the movable light source and the main body box is adjustable, and the movable light source is used for providing illumination for the plant sample. The device has the beneficial effects that the technical problem that the existing domestic microgravity simulation device cannot perform large-scale measurement and development condition tracking on mature plants is solved, and the experimental materials for the existing simulator are animal cells, plant seedlings, single plant adult seedlings and the like; and large-scale microgravity simulation of the overground part of the mature plant in a unified environment cannot be met. By means of the gyrator, the growth and development reactions of the overground parts of various plants under microgravity can be tested in batches.

The utility model belongs to the technical field of detection equipment, and particularly relates to a clamping device for a torsion test of a plane piece. The clamping device comprises a frame part, a first clamping part and a second clamping part, the first clamping part is connected with the frame part, the second clamping part and the first clamping part are oppositely arranged, the second clamping part is rotatably connected with the frame part, the rotating axis of the second clamping part is arranged in the first direction, the first clamping part is used for being connected with one side of the plane part, and the second clamping part is used for being connected with the other side of the plane part. The second clamping part is used for being connected with the other side of the plane piece. According to the clamping device provided by the embodiment of the utility model, when a torsion performance test is carried out, the relative position between the first clamping part and the frame part is fixed and the second clamping part is rotated, so that a torsion force can be accurately applied to the plane piece, and the torsion performance of the plane piece is tested. And the testing flexibility and accuracy are also improved.

The invention belongs to the field of coal resource mining, and discloses an experimental device and method for simulating underground coal bed gasification combustion. The experimental device comprises a gasification combustion system, an injection system, a gas analysis system and a temperature and pressure monitoring system, according to the gasification combustion system, a plurality of connecting holes with the same hole diameter are formed in a gasification furnace body and a gasification furnace cover and used for being connected with an electric heating igniter, a stainless steel pipe production well, a thermocouple and a pressure sensor, the electric heating igniter simulates a vertical well and / or a horizontal well injection well, and the stainless steel pipe production well simulates a vertical well and / or a horizontal well production well. Various well patterns and well types are simulated by adjusting the positions, the number and the insertion depth of the electric heating igniters and the stainless steel pipe production wells; the thermocouple and the pressure sensor are arranged in the remaining connecting holes in a crossed mode and used for measuring the temperature and pressure of different positions of the gasifier. According to underground coal bed gasification combustion simulation, the influence of the field well spacing mode and the well pattern on the gasification effect is considered, and the simulation result is more real and accurate.

The utility model provides equipment capable of realizing multi-channel free pitch change and independent vertical movement, when the equipment is used, the transverse pitch change guide rail bottom plate can be fixed on a machine base, and if the multi-channel free pitch change needs to be realized, the transverse pitch change guide rail bottom plate is fixed; each pipettor mounting mechanism can be driven to move left and right through the respective transverse variable-pitch driving device, so that the distance between the pipettor mounting mechanisms can be adjusted; if the independent vertical movement needs to be realized, each pipettor mounting mechanism can drive the respective pipettor mounting seat to independently and vertically move through the respective vertical movement driving device, and after the pipettors are mounted, the independent vertical movement and the free spacing change of the plurality of pipettors can be realized through the operation. According to the utility model, the free distance change between the channels can be realized, and the independent vertical movement of each channel can be realized, so that the multi-channel pipettor arranged on the multi-channel pipettor can better meet the experiment requirements.

The application discloses a wheel-bucket excavator experimental platform suitable for an alpine environment and relates to the technical field of mine mechanical test equipment, comprising a simulated rock wall, a wheel-bucket test device and a strain gauge; the wheel-bucket test device comprises a wheel-bucket assembly and a plurality of buckets uniformly arranged along the circumference of the wheel-bucket assembly, and a plurality of bucket teeth are arranged on the outer side of the bucket and directly contact the simulated rock wall; the strain gauge is inlaid in the connection between the bucket tooth and the bucket and is used for collecting the horizontal and vertical torsional stress changes of the bucket tooth; the simulated rock wall is arranged to simulate the physical properties of rock-soil bodies in the alpine environment, the bucket teeth directly contact the simulated rock wall to realize accurate simulation of the digging working condition, and the technical problem that the existing experimental platform cannot be adapted to the alpine environment is solved, thereby providing an experimental basis in line with actual working conditions for performance verification of the wheel-bucket excavator used in the alpine environment.

The invention relates to the technical field of cotton processing devices, in particular to a sample processing device for cotton detection. Comprising a machine body, a power assembly is arranged on the left side of the machine body, the right end of the power assembly is located in the machine body, a plurality of elastic metal strips are evenly arranged at the right end of the power assembly in the circumferential direction, a plurality of air supply parts are arranged at the bottom of the machine body, a discharging pipe communicated with the interior is arranged on the right side of the machine body, and cleaning assemblies are symmetrically arranged at the discharging pipe; a dispersing assembly is arranged at the top of the machine body; cotton is blown up and is matched with vibration of the dispersing assembly, cotton loosening operation is achieved, cotton seeds and cotton branches are separated stably and rapidly, after separation, the cotton seeds and the cotton branches are grabbed into the discharging pipe through the metal strips, workers can take the cotton seeds and the cotton branches according to needs, and use is convenient.

The invention discloses a fixing device for a concrete slab explosion test, which comprises a fixing seat, and the fixing seat comprises a first supporting unit and a second supporting unit which are detachably arranged; first clamping assemblies are arranged at the top ends of the first supporting unit and the second supporting unit; the fixing base is further provided with a monitoring unit and a blasting assembly fixing unit. The free end of the blasting assembly fixing unit can be close to or away from the fixing base, the second clamping unit comprises a first clamping assembly and a second clamping assembly which are detachable, and the second clamping assembly can move in the vertical direction of the first clamping assembly; the device can effectively simulate the real clamping and stress conditions of the two ends of a concrete slab in a building under the action of an explosion load, greatly improves the accuracy of an anti-explosion performance loading test of the concrete slab with the two ends clamped and supported, meets the test of different to-be-tested assemblies at the same time, and improves the test efficiency. The test efficiency is improved and the cost is reduced.

The present invention provides a power supply circuit, an ultrasonic radar and a vehicle. The power supply circuit includes a protection diode, whose input end is connected to a voltage source; a filter detection circuit, one end of which is connected between the voltage source and the protection diode and the other end is grounded, and the filter detection circuit is configured to filter the voltage of the voltage source and detect the voltage amplitude of the voltage source; a voltage stabilizing circuit, which is connected between the output end of the protection diode and the voltage output port of the power supply circuit and is configured to output a stable voltage; and a filter circuit, one end of which is connected between the voltage output port and the voltage stabilizing circuit and the other end is grounded, and is configured to filter the voltage output by the voltage stabilizing circuit. The power supply circuit of the present invention can achieve stable voltage output through the synergistic effect of the protection diode, the filter detection circuit, the voltage stabilizing circuit and the filter circuit, and is suitable for a wider input voltage range.

The utility model discloses a device for accelerating cerebral hemorrhage of rabbits, which relates to the technical field of experimental equipment and comprises a first electric push rod, a supporting assembly is arranged at the bottom of the first electric push rod and used for supporting and moving the first electric push rod, a supporting plate is fixedly mounted at the output end of the first electric push rod, and a carrying column is arranged on the supporting plate in a penetrating manner. And a gear is fixed to the top end of the carrying column, and a supporting plate is fixed to the bottom end of the carrying column. A first stud can be driven to rotate by screwing a first knob, so that the first stud pushes a clamping plate to move in a lantern ring, rabbit legs can be fixed in the lantern ring, a traction assembly is utilized to drive a gear to rotate, and the gear drags a rabbit below a supporting plate to rotate along with the gear by means of a carrying column; the efficiency of rabbit cerebral hemorrhage is further improved in a mode of matching rotation with handstand, the time required by rabbit cerebral hemorrhage is shortened, and the experimental requirements are better met.

The invention discloses a weak plane coring method and system based on CT scanning. The method comprises the following steps: obtaining a three-dimensional structure diagram of an original rock core sample; performing weak surface identification on the original rock core sample according to the three-dimensional structure diagram to obtain a weak structural surface and characteristics of the original rock core sample; and marking the coring position, shape and size on the weak structural plane, and coring the original core sample. The weak structural plane of the rock sample can be accurately judged, the coring requirement of an experiment is met, and the sampling precision is effectively improved.

The invention provides rainfall simulation equipment which comprises a driving assembly, a push-pull assembly, a support and a plurality of injectors, the driving assembly is connected with the push-pull assembly, each injector comprises a piston rod and a needle cylinder arranged on the piston rod in a sleeving mode, each piston rod is connected to the push-pull assembly, and each needle cylinder is connected to the support. According to the invention, the piston rod of each injector is connected to the push-and-pull assembly, and the needle cylinder of each injector is connected to the bracket, so that the driving assembly can drive each piston rod to move along each needle cylinder simultaneously through the push-and-pull assembly, the water yield of each injector in unit time is the same, and the experiment requirement is met. For example, in order to observe the growth conditions of different plants under the same rainfall, different potted plants can be placed below the injectors, and the growth conditions of the potted plants can be observed after rainfall of the rainfall simulation equipment.

The invention relates to the technical field of burn and scald experiments, in particular to an animal skin burn modeling standardization device which mainly structurally comprises a main machine, a handle connected with the main machine and a metal sheet connected with the handle through a metal rod. The main machine is at least provided with a temperature adjusting knob, a switch button, a temperature display screen and a pressure display screen, the handle is at least provided with a pressure adjusting push rod, a heating wire, a heat insulation layer, a pressure sensor and a spring are at least arranged in the handle, the burn degree is controlled by adjusting temperature and pressure and shortening contact time, and I-degree or shallow II-degree burn is achieved. The shape and the size of the metal sheet can be adjusted to carry out burn modeling on animals such as mice or rats, especially to prepare deep II-degree burn models, and the model can also be prepared through measures such as overheat protection and emergency shutdown. The safety of personnel, animals and equipment in the experiment process can be guaranteed, and the device can be widely applied to multiple fields of basic medicine such as preclinical medicine screening, treatment method evaluation and burn pathological mechanism analysis.

The invention relates to the field of charge detection reading, and discloses a charge amplifier structure and a use method thereof, and the structure comprises an amplification unit which is used for receiving a to-be-identified charge signal outputted by a detector, and amplifying the received to-be-identified charge signal to obtain an amplified signal of the to-be-identified charge signal; the peak value sampling and holding circuit is used for collecting a peak value voltage signal of the amplification signal output by the amplification unit and storing the peak value voltage signal in a capacitor; the feedback circuit is used for feeding back the peak voltage signal acquired by the peak sampling and holding circuit to the reference voltage end of the amplification unit to form a new baseline of the amplification unit; and the reset signal unit is used for processing the amplification signal output by the amplification unit to obtain a trigger signal of the charge signal, and processing the trigger signal to obtain reset signals of the amplification unit and the peak value sampling and holding circuit. The problem that a traditional charge amplifier cannot continuously integrate charges with slow drifting speed and cannot continuously superpose collected charge peak values is solved.

The utility model relates to the field of water ecological restoration, in particular to a device for planting and observing submerged plants in situ, which comprises an overwater device, an underwater device and a fixing rod, the overwater device is connected with the fixing rod and can move up and down along the fixing rod, and the underwater device is arranged below the overwater device. The overwater device comprises a floating bed and a framework arranged on the floating bed, and is characterized in that the framework comprises a first frame and a second frame, the first frame is arranged above the second frame, a plurality of supporting rods are further arranged between the first frame and the second frame, one end of each supporting rod is fixed to the first frame, and the other end of each supporting rod is fixed to the second frame. According to the device, the double-layer frame is arranged and matched with the supporting rods to form a groove-shaped structure, so that the floating bed is clamped and fixed, and the device is simple in structure, low in manufacturing cost, high in practicability, convenient to manufacture and capable of being massively manufactured according to needs to meet experiment requirements.

The utility model discloses a rotatable cover plate for a transformer experiment insulation platform, which comprises a base, an insulation platform is arranged on the base, a deep groove is arranged on the base surrounding the circumference of the insulation platform, the rotatable cover plate further comprises a plurality of cover plates distributed along the circumference of the deep groove, and the cover plates are driven by driving power to overturn vertically relative to the base. The cover plate is overturned downwards to be in a horizontal state, and the transverse frame is closed at the opening of the deep groove, so that the transformer is conveniently transferred to the insulating platform, or the cover plate is overturned upwards to be in a vertical state, so that the upper opening of the deep groove is opened, and the insulating platform and the base are disconnected through the deep groove; therefore, rapid switching of states can be achieved by turning over the cover plate, the efficiency of a transformer experiment is improved, the experiment requirement is met, and the transformer experiment table is simple in overall structure, ingenious in layout, convenient to operate and good in practicability.

The invention relates to the technical field of soil detection equipment, in particular to a soil total nitrogen digestion method and device. The driving motor is fixedly connected with the outer wall of the cooking device through a bracket; the shaking device is located in the cooking device; according to the device, the relative position of the sliding plate and the bottom plate can be flexibly adjusted by arranging the adjusting screw rod, so that the device can adapt to test tubes with different heights and sizes, and the compatibility of the device to experimental sample containers with different specifications is improved. Therefore, when a soil total nitrogen digestion experiment is carried out, specific adaptive equipment does not need to be searched for test tubes with different sizes, the complexity of experiment preparation work is reduced, the convenience of experiment operation is improved, and various experiment requirements can be met.

The utility model provides a kind of power electronic experiment control panel, comprising: substrate;Main control module is set on the substrate, for receiving control instruction and output corresponding control signal;Power conversion module is set on the substrate and is connected with the main control module, for realizing the transformation of electric energy according to the control signal;Drive module is set on the substrate, respectively with the main control module and power conversion module connection, for amplifying the control signal to drive the power conversion module work.The utility model can efficiently realize electric energy conversion and related functions, meet the experimental requirements.

The application discloses a material head for a high-pressure liquid nitrogen freezer and relates to the technical field of low-temperature freezing equipment.The material head comprises a material head upper sheet, a material head middle sheet and a material head lower sheet which are stacked in sequence from top to bottom and jointly form a cylindrical material head, an outer coaxial ring is arranged on the material head, and a rubber ring is arranged on the coaxial ring; the material head upper sheet is provided with a first air inlet and a first air outlet and is connected through a first air path, a second air path and a first air cavity; the material head lower sheet is provided with a second air inlet and a second air outlet and is connected through a third air path, a fourth air path and a second air cavity; and the material head middle sheet is provided with a sample cavity in which a sample box and biological samples are placed. Through the arrangement of the upper and lower double air inlet channels, bilateral synchronous cooling is realized, the freezing uniformity is good, the coaxial ring is attached to the cavity wall to form a small-volume sealed space, the pressure building time is short, the pressure maintaining time is long, and the high-pressure freezing sample preparation efficiency and sample preservation quality are effectively improved.

The utility model discloses a gradient dilution sampling device which comprises a liquid taking pipe, a pull-out-tip-shaped liquid taking nozzle arranged at the lower end of the liquid taking pipe, a blocking plate arranged at the upper end of the liquid taking pipe, a piston arranged in the liquid taking pipe, a connecting rod arranged at the top of the piston, a spring arranged between the blocking plate and the pressing handle and vertically and upwards penetrating out of the blocking plate. Scale marks are arranged on the liquid taking pipe and the liquid taking nozzle; a branch pipe is horizontally or obliquely arranged on one side of the liquid taking pipe, one end of the branch pipe is communicated with the liquid taking pipe, the other end of the branch pipe is connected with a U-shaped pipe, a pipe plug is arranged at the other end of the U-shaped pipe, a pressurizing device is inserted into the pipe plug, and a one-way valve flowing from the U-shaped pipe to the liquid taking pipe is arranged on the branch pipe. According to the utility model, multiple groups of samples with different concentrations can be diluted by sampling once, the dilution time is shortened, the inspection error is reduced, the operation is convenient and fast, the working efficiency is high, and the practicability is strong.

The invention relates to the technical field of biological medicines, in particular to an aptamer capable of simultaneously simulating free and binding Neu5Gc, a kit and application of the aptamer. The nucleotide sequence of the aptamer is as shown in SEQ ID No. 1. The aptamer provided by the invention can effectively simulate free Neu5Gc antigen epitopes in various binding states, can be combined with more types of anti-Neu5Gc antibodies compared with existing types of limited antigens, can be used as a molecular probe, can detect the content of anti-Neu5Gc antibodies in serum and related preparations to be closer to the real level, can also detect the content of Neu5Gc antigens in biological preparations through a competition principle, and has a good application prospect. And in-vivo experiments are expected to be carried out as a Neu5Gc substitute due to low immunogenicity.

The invention provides an orbital molecular screen for improving the volume and vacuum degree of a wake flow area, the screen surface of the orbital molecular screen has an arc-shaped characteristic, and the arc-shaped screen surface protrudes towards the flight direction of the orbital molecular screen, so that when the orbital molecular screen flies in a low orbit, an ultrahigh vacuum area is formed in the arc-shaped screen surface, and the volume and vacuum degree of the wake flow area are improved. And the vacuum degree of the ultrahigh vacuum area is 10 <-11 > Pa. The central angle between the connecting line of the two ends of the section of the arc-shaped screen surface and the center of the protrusion of the section and the horizontal central line is theta, and theta is larger than 0 and smaller than 90 degrees; the thickness d of the section of the arc-shaped screen face is larger than 0 and smaller than 100 cm. The curvature between the neutral axis of the cross section of the arc-shaped screen face and the rotation center point of the cross section is r, and r is larger than 0 and smaller than infinity. According to the orbital molecular screen provided by the invention, the problems that the vacuum volume of an ultrahigh vacuum area formed by a traditional orbital molecular screen is too small and the vacuum degree is not high are solved.

The utility model belongs to the technical field of ammonia concentration measurement, particularly relates to a wide-range ammonia concentration measuring device, and aims to solve the problems of small measuring range and frequent maintenance of the conventional ammonia concentration measuring equipment. The particulate matter mass measuring equipment comprises a first power supply, a first switch and a signal interface, a sampling dilution channel is mounted at the upper part of the particulate matter mass measuring equipment, a sampling pipe is fixedly mounted at the front end of the sampling dilution channel, and a diluted sample gas outlet is formed in the bottom of the particulate matter mass measuring equipment; the diluted sample gas outlet is connected with a heating sampling pipe, the heating sampling pipe is connected with an ammonia analyzer, a first compressed air connector is arranged at the bottom of the particulate matter mass measuring equipment, and the device is large in measuring range and stable in measurement and meets the daily use condition of a laboratory.

The electromagnetic suspension device comprises a working cavity, an induction coil and a laser output device, the induction coil is arranged in the working cavity and connected with an alternating power supply, a coil inner cavity of the induction coil is used for containing the ultrahigh-temperature alloy, and the laser output device is arranged in the working cavity. The transmitting path of the laser output device corresponds to the coil inner cavity, the induction coil can excite an alloy sample placed in the coil inner cavity to generate induction eddy current after being connected with alternating current, the Joule effect generated by the induction eddy current can enable the sample to be heated continuously, and laser emitted by the laser output device can provide an extra heat source for the alloy sample. And meanwhile, the induction coil can enable the inside of the alloy sample in a molten state to generate an electromagnetic stirring phenomenon, so that the structure uniformity of the alloy sample is effectively improved, the generation of defects such as shrinkage cavities, cracks, air holes and segregation is effectively inhibited, and the technical effect of optimizing the material performance is further achieved.

The utility model discloses an electrostatic spinning device for preparing nanofibers. The electrostatic spinning device comprises a motor; the spinning nozzle is connected with a power supply so as to generate an electric field which is uniformly distributed on the surface, the spinning nozzle is used for spraying a spinning solution so as to form nanofibers, and the spinning nozzle is connected to the motor so as to be driven by the motor to rotate; the curved tops of the two curved-top cylinders are oppositely arranged, and the two curved-top cylinders are used for generating a magnetic field; the spherical magnet receiving device is arranged between the two curved-top cylinders, suspends and rotates under the action of a magnetic field, and is used for receiving nanofibers; the electromagnets are arranged on the two opposite sides of the spherical magnet receiving device, and the magnetic field directions of the electromagnets are opposite; a magnetic field formed by the electromagnet acts on the nanofibers to enable the nanofibers to be in a certain orientation, and the spherical magnet receiving device can change the orientation of the nanofibers through rotation. According to the utility model, the spinning fibers can be highly oriented under the action of magnetic field force.

The application discloses a kind of construction methods of sunlight dermatitis mouse model, specifically belongs to animal experiment model experimental technical field, the construction method includes the following steps: S01, ultraviolet lamp intensity measurement and selection;S02, the establishment of sunlight dermatitis model;S03, fresh tissue paraffin embedding section;S04, wax tissue section respectively by H-E staining experiment, Masson staining experiment, immunohistochemical staining experiment, transmission electron microscopy sheet observation, obtain the structure characteristic change of material organization.This construction method is by controlling the consistency of keeping radiation dose, to restore actual situation to a greater extent, provides real and reliable basis for developing sunlight dermatitis drug.

The invention discloses a remote landslide sliding distance measuring device for model test. It is composed of a rigid closed model box, two groups of shock absorbing strips and a sliding distance measuring model box, a large earthquake simulation vibration table top is fixed to the bottom of the rigid closed model box, connecting holes are arranged on both sides of the shock absorbing strips, a pulley is arranged at the bottom of the sliding distance measuring model box, a baffle is arranged on the side of the sliding distance measuring model box, a hanging ring is arranged on the baffle, a ruler is arranged around the sliding distance measuring model box, a threaded hole is arranged on the side of the rigid closed model box, the outer ends of the rigid closed model box and the sliding distance measuring model box are both arranged as bolt assemblies matched with the shock absorbing strips, and table covers are arranged on both sides of the large earthquake simulation vibration table top. The invention can effectively reduce human errors and limited experimental equipment so that the length of the slope model meets the experimental requirements.

The utility model relates to an angle-adjustable irradiation device for an aging test box. The first supporting surface and the second supporting surface are symmetrically arranged at the top of the box body; the angle driving assembly comprises a driving motor, a first driving shaft connected with the output end of the driving motor and a second driving shaft which is in transmission connection with the first driving shaft and is opposite to the first driving shaft in rotation direction; the plurality of first irradiation lamps are rotationally connected to the first supporting surface, and each first irradiation lamp is connected with a first adjusting shaft which is in transmission connection with the first driving shaft and has the same rotation direction with the first driving shaft; and the second irradiation lamps are rotationally connected to the second supporting surface, and each second irradiation lamp is connected with a second adjusting shaft which is in transmission connection with the second driving shaft and has the same rotation direction with the second driving shaft. The device can realize irradiation surfaces at different angles and keep the irradiation angle of the lamp source perpendicular to the irradiation surfaces all the time, so that the experiment requirements under various complex working conditions are met.

This invention discloses an atmospheric pressure reactor for high-viscosity materials, comprising a support assembly, a lifting device, a servo motor, a bath, a sealing and fixing assembly, a stirring assembly, and an electrical controller. The support assembly has a square sliding tube as its column, and the support rod is machined with a suitable slide rail, forming a support structure where the sliding tube is fixed and the slide rail drives the motor to lift and lower. The sealing and fixing assembly consists of a cover plate, a spring pad, and a bracket, enabling the sealing and fixing of the beaker and the directional recovery of volatile gases from the reaction. The stirring assembly has threaded stirring blades, and the servo motor achieves closed-loop control of the stirring speed via an encoder. This invention solves the problems of easy beaker rotation, uneven stirring, and uncontrolled speed in high-viscosity material reactions, improving experimental accuracy and operational safety. It is compatible with various reactor vessels and suitable for atmospheric pressure synthesis reactions of high-viscosity materials.

The application belongs to the technical field of experimental devices, and particularly relates to an animal experiment table, which comprises a table body, and a fixing mechanism is arranged at the upper end of the table body. By adjusting the states of two clamps, the fixing and restraint of the animal state under various experiments can be satisfied, the device is more flexible, the experimental requirements are better met, the number of equipment is reduced, and the pressure of the equipment on the space is reduced. Through the cooperation of the two clamps, the experimental requirements of animal standing, coma restraint and multiple quantity control groups can be satisfied, and the functions of the equipment are more abundant. By disassembling the side fence and selecting a suitable side fence, the animal experiment can be carried out without blocking and affecting, the animal can be supported, waste liquid and tissue generated during the experiment can be collected and cleaned, the large-scale pollution of the experimental site and the table body is avoided, the subsequent cleaning process is simplified, and the experimental efficiency is improved.