10results about How to "Meet the experimental needs" patented technology

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 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 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 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 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.

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.