125 results about "Beam tube" patented technology

An ion implantation system including an ion source for generating an ion beam, an end station for holding a substrate to be implanted by the ion beam, and a linear accelerator disposed between the ion source and the end station and adapted to accelerate the ion beam, the linear accelerator including a beam tube for transmitting the ion beam, the beam tube having at least five adjoining sidewalls, at least one resonator coupled to the beam tube, and at least one turbomolecular pump coupled to the beam tube, wherein at least one of the at least five adjoining sidewalls of the beam tube has an opening formed therein for providing access to an interior of the beam tube.

The invention provides an underwater running double-stator beam flow rim propeller structure which comprises a guide pipe, the interior of one end of the guide pipe is connected with a front propeller hub, a front propeller hub cap is installed at one end of a propeller shaft, a front deflection stator, a rim transmission device and a rear deflection stator are sequentially installed on the propeller shaft, and the front deflection stator is connected with the front deflection stator. The other end of the conduit is connected with the tail beam tube; the wheel flange transmission device comprises a wheel flange transmission ring, the wheel flange transmission ring is connected with a paddle, and the paddle is installed on the rotor inner shaft. The guide pipe is used as a connecting carrier of the stator, the rim and the beam tube, and the rim transmission device is used as a power source device of the propeller. The front torsion stator plays a role in enabling inflow of the rotor to generate prerotation, the rear torsion stator plays a role in adjusting the torsion angle of the blades according to the fluid speed so as to better absorb wake flow energy, and the beam barrel is used for restraining the wake flow and concentrating pressure at the tail of the propeller on beams in the same direction, so that the effect of improving the propelling efficiency is achieved.

An ion implantation system including an ion source for generating an ion beam, an end station for holding a substrate to be implanted by the ion beam, and a linear accelerator disposed between the ion source and the end station and adapted to accelerate the ion beam, the linear accelerator including a beam tube for transmitting the ion beam, the beam tube having at least five adjoining sidewalls, at least one resonator coupled to the beam tube, and at least one turbomolecular pump coupled to the beam tube, wherein at least one of the at least five adjoining sidewalls of the beam tube has an opening formed therein for providing access to an interior of the beam tube.

The invention discloses a multi-beam laser cutting device integrated with a cooling injection system, the multi-beam laser cutting device comprises a processing table and a cutting mechanism, the cutting mechanism comprises an equipment box, a beam tube is arranged outside the equipment box, the beam tube is sleeved with a fixing sleeve, the outer surface of the fixing sleeve is fixedly connected with the outer surface of the equipment box, and the outer surface of the fixing sleeve is fixedly connected with the outer surface of the equipment box. The laser cutting device comprises a fixing sleeve, a fixing ring is fixedly connected to the interior of the fixing sleeve, the interior of the fixing ring is hollow, a water inlet pipe is communicated with the interior of the fixing ring in a penetrating mode, and a water spraying pipe is communicated with the interior of the fixing ring in a penetrating mode. The problems that local hardness is increased and toughness is reduced due to the fact that metal grains are prone to coarse oxidation and the like in a heat affected zone, meanwhile, material micro-deformation is caused by thermal expansion and shrinkage, slag and an oxide layer are prone to being attached, additional working procedures are needed for cleaning, and machining precision and machining efficiency become poor are solved.

The invention provides a particle accelerator beam pipeline support member design method and a support system, and relates to the technical field of particle accelerators, and the particle accelerator beam pipeline support member design method comprises the following steps: classifying devices on a beam transport line into interference source devices and sensitive devices based on the electromagnetic characteristics of the devices and the structural relationship between the devices and a beam pipeline; supporting pieces are independently configured for a beam pipeline and various devices, and specific electrical isolation, grounding and filtering measures are adopted for different device types: an interference source device is connected with an electrostatic protection ground and is added with a filter; sensitive equipment and a beam pipeline are electrically isolated and are connected with a signal ground. Through systematic supporting and grounding architecture design, a coupling path of electromagnetic interference is fundamentally cut off, electromagnetic noise on a beam pipeline is remarkably reduced, a clean reference ground is provided for beam diagnosis and other weak signal systems, and high-reliability and high-precision operation of an accelerator is guaranteed.

The invention relates to an adjustable bracket for mounting automobile wire harnesses, which is applied to the field of brackets, the bracket is provided with a plurality of pairs of lower beam tubes and upper beam tubes to separate and fix the wire harnesses, so that the wire harnesses are effectively prevented from being damaged due to mutual friction, and the wire harnesses or wire harness joints are fixed by utilizing the wrapping property of a wire covering film; the wire covering film can be adaptively adjusted, so that wire harnesses and wire harness connectors of different specifications are fixed, the adaptability is higher, heat of the wire harnesses and the wire harness connectors is absorbed by arranging heat absorption structures in the lower beam tube and the upper beam tube, the heat is transmitted into the fixing support for heat dissipation, and the heat absorption effect is better. The wire harnesses and the wire harness joints are effectively prevented from melting in a high-temperature environment to affect the safety of an automobile, and self-adaptive heat dissipation adjustment can be carried out according to the temperature of each group of wire harnesses or each wire harness joint, so that the heat dissipation effect is effectively improved.

The steering axle frame of the low-speed unmanned logistics vehicle comprises a front beam pipe, a steering frame, a connecting sleeve and the like, the connecting pipe is provided with a connecting section and a limiting section, the connecting section is inserted into the front beam pipe, and the limiting section abuts against the end of the front beam pipe; one end of the connecting joint is arranged on the connecting sleeve, and the other end is movably inserted into a steering groove of the bogie; the connecting rotating shaft is arranged on the connecting joint and is rotationally connected with the bogie; the positioning lock pin is arranged on the connecting joint and is inserted into the locking groove of the connecting rotating shaft so as to lock the connecting rotating shaft and the connecting joint; and the gasket is arranged between the connecting joint and the bogie so as to lock the axial position of the connecting joint. According to the steering axle frame, the connecting strength between the connecting joint and the front beam pipe is improved by additionally arranging the connecting sleeve, so that the connecting joint and the front beam pipe are not prone to breakage; axial positioning of the connecting rotating shaft is achieved through the positioning lock pin and the gasket, axial movement is avoided, and noise generated by axial movement is eliminated.

The utility model relates to an indoor composite optical cable based on a micro-beam tube structure, which comprises an outer sheath, an inner sheath, a central reinforcing member, a plurality of micro-beam tube units distributed along the circumferential direction, a waterproof layer and a filling structure, the outer sheath wraps the outermost layer of the optical cable, and the inner side of the outer sheath is provided with a spirally wound nonmetal tensile belt. The inner sheath is coaxially nested in the outer sheath, an annular gap is formed between the inner sheath and the outer sheath, two non-metal reinforcing members are symmetrically embedded in the annular gap and are located at the axis position of the optical cable, and the micro beam tube unit comprises a plurality of optical fibers and a microporous polyester belt wrapping the optical fibers. The micro beam tube units are spirally twisted and arranged by taking the central reinforcing piece as a circle center, the central reinforcing piece is located at the axis position of the optical cable and provides stable support for the whole optical cable, and the micro beam tube units are spirally twisted and arranged by taking the central reinforcing piece as the circle center, so that the optical cable is endowed with good flexibility and bending resistance.

The goaf monitoring system comprises a detection pipeline, the detection pipeline comprises a protection net sleeve, a first beam tube, a second beam tube and a third beam tube, the protection net sleeve is arranged on the side wall of an air return roadway, a protection channel is formed in the protection net sleeve, and the first beam tube, the second beam tube and the third beam tube are arranged in the protection channel respectively; the first end of the first beam tube is located in a suffocation zone of the goaf, the first end of the second beam tube is located in an oxidation heating zone of the goaf, and the first end of the third beam tube is located in a heat dissipation zone of the goaf. According to the goaf monitoring system disclosed by the invention, stable protection can be realized by utilizing the protective net sleeve, so that the first beam tube, the second beam tube and the third beam tube are prevented from being damaged or even damaged due to collapse of the goaf, meanwhile, the gas monitoring cost of the goaf is effectively reduced, and the gas monitoring efficiency of the goaf is improved.

The utility model relates to a bicycle frame welding production line. Comprising a first welding station, a second welding station, a third welding station and a correcting station which are sequentially arranged, wherein the first welding station is used for completing welding of a front beam pipe assembly; the second welding station is used for completing welding of a whole frame and a front welding bead of the frame; the third welding station is used for completing welding of a back welding bead of the frame; the first welding station, the second welding station, the third welding station and the correcting station are sequentially arranged, welding of the whole bicycle frame can be completed only through four procedures, namely, the three welding procedures and the one correcting procedure, the machining procedures can be simplified, the length of a production line can be reduced, then the production cost is reduced, and the production efficiency is improved.

The utility model discloses a pipeline vibration reduction structure for heat exchange equipment and the heat exchange equipment, and relates to the technical field of heat exchange equipment, the pipeline vibration reduction structure for the heat exchange equipment comprises a vibration reduction disc and a limiting belt, the vibration reduction disc is provided with at least two beam tube grooves, and the periphery of the vibration reduction disc is provided with a clamping groove; the limiting belt is connected to the vibration reduction disc, clamped in the clamping groove and used for blocking a groove opening of the beam tube groove. According to the technical scheme, the at least two beam tube grooves are formed in the vibration reduction disc of the pipeline vibration reduction structure for the heat exchange equipment, the heat exchange equipment inner pipeline with the high amplitude and the heat exchange equipment inner pipeline with the low amplitude are limited in the at least two beam tube grooves together, and the notches of the beam tube grooves are blocked through the limiting belts. The pipeline in the heat exchange equipment can be stably fixed and is not prone to loosening or displacement, the mode is easy and convenient to install, the cost is low when the pipeline is applied to the heat exchange equipment, and the time consumed for installation is short.

The application discloses a kind of based on heat trigger solid-liquid reaction's goaf spontaneous combustion initiative inerting device and method, belong to coal mine fire prevention technical field, first based on experimental data, goaf beam tube monitoring and numerical simulation determine goaf high temperature prevention area, under the influence of setting safety margin and considering the maximum thickness of residual coal determine the starting temperature of adaptive inerting device, then according to goaf residual coal thickness, porosity, oxygen concentration field and high temperature prevention area area calculate out initiative inerting device size and reagent filling amount, finally combine the effective coverage area of single device and honeycomb grid generation algorithm, design initiative inerting device dynamic pre-buried point, and pre-bury initiative inerting device in coal mining face, when device reaches the high temperature protection area of goaf deep, temperature sensing guide column paraffin melt, aluminum sulfate solution in liquid reagent storage tank flows into solid reaction bin and sodium bicarbonate reaction along guide column, generate a large amount of CO2 from exhaust port, rapidly reduce local oxygen concentration, eliminate goaf spontaneous combustion hazard.The core innovation of the application is to abandon the traditional passive prevention mode relying on gas diffusion, and instead adopt the initiative control mechanism of "temperature sensing trigger-in-situ reaction-directional release", so that CO2 directly acts on the high temperature area through the directional exhaust port, rapidly reduces the local oxygen concentration, cuts off the necessary condition of coal spontaneous combustion from the source, realizes the initiative identification and accurate inerting of goaf high temperature area, and ensures the safety production of coal mining face.

The utility model discloses a mine return air corner gas monitoring device which comprises a main machine body, the main machine body is connected with a beam tube, one end, deviating from the main machine body, of the beam tube is provided with a gas inlet tube, the beam tube is provided with a separation assembly, and the separation assembly comprises a box body, a gas conveying cylinder, a vertical rod and a plurality of groups of mutually parallel inclined blades. The gas conveying cylinder is fixedly arranged in the box body, an opening is formed in the upper end of the gas conveying cylinder, the vertical rod is located in the gas conveying cylinder and rotationally connected with the box body, each set of inclined blades are fixedly connected with the vertical rod, the gas inlet pipe sequentially penetrates through the box body and the gas conveying cylinder, the gas inlet pipe corresponds to the inclined blade at the lowest end, and the upper end of the box body is communicated with the beam pipe. One-way valves are arranged at the joints of the beam tube, the air inlet tube and the box body. The air return corner monitoring device has the effects of smoothly collecting air at the air return corner and guaranteeing normal monitoring of the air.

The utility model discloses a cutting head closed light path telescopic air pressure balancing device which comprises an upper light beam barrel, a bidirectional vacuum filter is installed on the outer side of the upper light beam barrel, an upper protective mirror is installed on the top of the upper light beam barrel, a collimating mirror is arranged at the bottom of the upper protective mirror, and a middle light beam barrel is fixedly arranged at the bottom of the upper light beam barrel. A lower light beam barrel is fixedly installed at the end of the middle light beam barrel, a lead screw integrated motor is arranged on the outer side of the lower light beam barrel, a protection lens base is arranged on one side of the lead screw integrated motor, and a focus lens and a lower protection lens are installed in the protection lens base. According to the cutting head closed light path telescopic air pressure balancing device, the protective lens base is made to move up and down through the lead screw integrated motor, a sealing ring is installed on a focusing lens barrel on the upper portion of the protective lens base, and the light path sealing performance is guaranteed; the up-and-down moving resistance of the front end is reduced through the bidirectional vacuum filter, and the responsivity of the follow-up shaft is improved; and the cutting nozzle is prevented from colliding with the plate.

The utility model provides a production cutting device for a central beam tube type OPGW optical cable, and belongs to the technical field of optical cable processing. Comprising a bottom plate, a discharging opening formed in the side wall of the bottom plate, a material guiding plate fixedly installed on the inner wall of the discharging opening, a vertical plate fixedly connected to the side wall of the bottom plate, a limiting hole formed in the surface of the bottom plate, a motor frame fixedly installed on the side wall of the vertical plate and a material receiving assembly arranged at the bottom of the bottom plate. Through cooperative use of the driving assembly and the auxiliary assembly, the optical cable cutting and stripping integrated operation is realized, the processing efficiency is greatly improved, the driving assembly adopts a high-precision servo motor to be matched with a rotating disc, the rotating speed of a cutting head can be accurately controlled according to actual processing requirements, the accuracy of the cutting length is ensured, and the production efficiency is improved. The auxiliary assembly can automatically adapt to optical cables with different diameters through spring buffering and arrangement of a movable wire seat, stable clamping force is provided in the cutting process, and the optical cables are prevented from slipping or deviating.

The invention discloses an indoor micro-beam tube type optical cable, which comprises a micro-beam tube, aramid yarn, a tearing rope and an outer sheath, and is characterized in that the outer sheath is arranged outside the micro-beam tube and the tearing rope, and the outer sheath is made of a low-smoke halogen-free material with an oxygen index greater than or equal to 40%; the micro beam tube comprises an optical fiber, a filling layer and an inner sheath, the inner sheath is arranged on the outer side of the optical fiber, and the filling layer is filled between the optical fiber and the inner sheath. The invention provides a dynamic adaptation strategy of a filling layer material and an inner layer sheath material, the provided indoor micro beam tube type optical cable can guarantee the structural integrity of the sheath, gives consideration to protection performance and construction operability, solves the contradiction that the inner layer sheath of a traditional optical cable is insufficient in protection or too hard to operate, can block moisture intrusion in a humid environment, and also can prevent the inner layer sheath from being damaged. And external force impact can be buffered through the filling layer, so that stable operation of the optical cable under extreme weather conditions such as high temperature and cold and complex scenes such as industrial oil contamination and high humidity can be ensured.

The invention provides a clinical anesthesia support structure convenient to operate, and relates to the technical field of medical instruments. The adjusting part is arranged below the beam tube part; the supporting part is arranged below the adjusting part; the blocking part is arranged above the supporting part; a cylindrical groove is formed in the top of an adjusting plate, connection of a connecting block is facilitated, then stability of a matched restraining block is kept conveniently, a fixing frame is fixed to the adjusting plate, a telescopic frame and an outer clamping frame are fixed conveniently, the telescopic frame and the outer clamping frame stretch out and draw back and turn over while stability is kept, and then the supporting range of the telescopic frame and the outer clamping frame is increased; according to the anesthesia support structure, a plurality of supporting devices are arranged, so that supporting treatment can be conveniently carried out in multiple directions in the operation process, and the problems that for an existing traditional anesthesia support structure, supporting treatment is generally achieved through stretching and retracting of a tubular structure, but due to the fact that the number of tools needed to be laid in the clinical operation process is large, supporting in different directions is inconvenient to carry out are solved.

The invention discloses a method and a system for measuring the diffusion radius of nitrogen injected in a goaf, and belongs to the technical field of safe mining of coal mines. Comprising the steps that beam tube monitoring points are arranged on the air inlet side and the air return side of a goaf, the oxygen concentration of each monitoring point is monitored in real time, and the advancing distance and nitrogen injection process parameters of a working face are synchronously recorded; the nitrogen injection process parameters comprise the nitrogen injection flow and the embedding position of a nitrogen injection port; extracting oxygen concentration data under a non-nitrogen injection condition, establishing a function relationship of the oxygen concentration along with the change of the advancing distance of the working face through linear fitting, and calculating a corresponding heat dissipation band termination position when the oxygen concentration is reduced to a first preset threshold value based on the function relationship; acquiring oxygen concentration data of the goaf under the specific nitrogen injection flow, and determining a corresponding post-nitrogen-injection heat dissipation zone termination position and a corresponding post-nitrogen-injection oxidation zone termination position when the oxygen concentration is reduced to a first preset threshold value; and calculating the difference value between the termination position of the heat dissipation belt and the termination position of the heat dissipation belt after nitrogen injection to obtain the nitrogen diffusion radius under the nitrogen injection flow.

The utility model discloses an underground coal mine beam tube gas production waterproof device, which relates to the technical field of beam tube detection and comprises a three-way tube, an inclined tube of the three-way tube is provided with a mounting plate and a top sealing plate, a through air hole is formed in the side wall of the inclined tube between the top sealing plate and the mounting plate, a beam tube is inserted into the three-way tube, and the top end of the beam tube is higher than the air hole. And a water leakage hole is formed in the three-way pipe below the air hole in a penetrating manner. The device is installed in a goaf, gas is taken through the vent holes, when accumulated water is too much and enters the three-way pipe from the vent holes, the accumulated water enters the three-way pipe below the installation plate from the first water leakage hole and then leaks out of the three-way pipe from the second water leakage hole, and it is prevented that the gas taking is affected by continuous accumulated water in the three-way pipe.

The application discloses a kind of beam halo detection device and method for relativistic particle beam, including vacuum chamber, which is internally arranged fluorescent screen and transition radiation screen, and central aperture is arranged on the fluorescent screen;When beam core is measured, transition radiation screen is located on beam tube, and beam current and transition radiation screen interact to generate transition radiation;When beam halo is measured, fluorescent screen is located in beam tube, and beam current bombards fluorescent screen to generate fluorescence.Optical imaging module includes diaphragm, optical lens group, band-pass filter, neutral attenuation sheet and image sensor arranged in sequence;Image sensor is used to collect transition radiation light and generate first beam core distribution image, and also used to collect the fluorescence signal corresponding to each moving position of fluorescent screen and generate second beam core distribution image and beam current image.Control analysis module includes motorized stage, stage controller and data server.The device uses transition radiation screen and light-emitting screen combination method, and the beam core and beam halo of micron-level size relativistic particle beam can be accurately measured.

The application provides a kind of laser pumped cesium atomic beam clock parameter adaptive setting device and method, relating to atomic clock technical field, including cesium beam tube unit;Cesium beam tube drive unit;Frequency stabilization laser light source unit;Acoustooptic frequency shift unit;Crystal oscillator lock frequency unit;Temperature acquisition and control unit;Wherein, main control unit is connected each controlled module by communication interface, and in-machine computer runs host computer software: calculate relative frequency deviation and allan variance, obtain frequency deviation sequence and allan variance data set;Determine the optimal working parameter combination corresponding to peak value;Linkage executes primary temperature control, secondary temperature control and tertiary temperature control, realizes temperature gradient compression and wavelength stability control;Compare real-time monitoring parameters with preset threshold, determine alarm level, thereby trigger system response instruction.The beneficial effects of the application are to reduce labor cost, improve temperature adaptability and improve long-term stability index.

The utility model provides a belt conveyor carrier roller frame convenient to install and correct. The belt conveyor carrier roller frame comprises side supporting plates and a bent beam. The two ends of the camber beam are connected with the side faces of the tiger claws respectively, the multiple carrier rollers are evenly installed on the camber beam, the edge supporting plates are fixed to the tops of the tiger claws, the tiger claws at the two ends of the camber beam are installed on the edge beam pipes respectively, the lower ends of the edge beam pipes are supported by the multiple stand columns, and the lower ends of the opposite stand columns are connected through the connecting beam. The lower rollers are further installed between the opposite stand columns and located above the connecting beams, the carrier rollers are installed on the edge beam pipes through the tiger claws and locked through the elastic pins, and the installation process and steps of the belt are simplified; and after the belt deviates, the elastic pin can be pulled out to adjust the position of the tiger claw back and forth so as to correct the belt.

The utility model relates to a low pressure test air inlet control tooling structure, including: frame, push rod, surge tank, pressure regulating valve, beam tube wheel and pressure gauge, the frame is provided with bumping post and elastic square post respectively, the push rod is connected with the frame front end in rotary connection mode, the front end of the push rod is provided with arc hook, and the front end of the push rod is connected with the elastic square post. A rotary supporting frame is arranged on the outer side of the arc hook, the beam tube wheel is arranged in the frame and rotationally connected with the frame, a buffer tube is evenly wound on the beam tube wheel, and the surge tank is in pipeline connection with the pressure gauge through the pressure regulating valve and the buffer tube. According to the utility model, the pump can be quickly pried through the running fit of the push rod and the frame, and the air inlet of the mechanical seal cavity is completely separated from the ground through the support of the rotating support, so that a tester can quickly connect a test pipeline; gas pumped manually passes through the pressure stabilizing tank, the pressure regulating valve and the buffer pipe and then enters the mechanical seal cavity, the speed is low, the flow speed is stable, the mechanical seal cavity is not prone to being damaged, and manual inflation is facilitated for control and adjustment.

The invention provides a vacuum type large-panel semiconductor detector, and relates to the field of semiconductor detectors. The detector comprises a detector cavity, a front end plate and a rear end plate which are detachably connected with the detector cavity are arranged at the two ends of the detector cavity respectively, a vacuum adapter plate is arranged on the end face, facing the exterior of the detector cavity, of the front end plate, and the vacuum adapter plate is used for being connected with an external sample cavity body; the vacuum adapter plate is provided with a front panel, the front panel is provided with a beam through hole and a plurality of front-end modules, and the beam through hole is located between two adjacent front-end modules; the vacuum type large-panel semiconductor detector further comprises a beam tube, one end of the beam tube is arranged in the vacuum adapter plate and communicated with the beam through hole, and the other end of the beam tube penetrates out of the rear end plate. And a rear-end electronic component is also arranged in the inner cavity of the detector cavity. According to the invention, a signal with a higher scattering angle can be collected, so that the ultimate resolution of structural analysis of a coherent diffraction experiment is improved.

The utility model discloses peeling equipment for an aluminum profile casting rod, and belongs to the field of aluminum profile processing. According to the technical scheme, the peeling equipment for the aluminum profile casting rod is divided into a peeling machine body and a grinding pipe body, and the grinding pipe body is arranged at the output end of the peeling machine body in a matched mode; according to the aluminum profile peeling device, an aluminum profile peeling structure is optimized, a beam tube clamping groove and a position correction part are arranged at the front end, the overall limiting precision and the fixing capacity in the aluminum profile machining process are achieved, and therefore the comprehensive quality in the aluminum profile peeling process is further improved; and meanwhile, the structure of the peeling part is optimized, the surface of the aluminum profile is subjected to peeling treatment in a transverse tooth grinding mode, the error-tolerant rate in the surface treatment process of the aluminum profile is increased, and the actual production loss is further reduced.

This invention relates to a telescopic folding bicycle, comprising: a frame including a main beam tube, a front fork, and a rear fork; the main beam tube includes a first portion and a second portion that are nested together; the front fork is connected to the first portion; the rear fork is connected to the second portion; the front fork is used to mount the front wheel; and the rear fork is used to mount the rear wheel. The first portion can switch between a forward-extended first position and a rearward-retracted second position relative to the second portion, thereby allowing the telescopic folding bicycle to switch between an unfolded state and a folded state. Since the main beam tube includes the nested first and second portions, when folding the telescopic folding bicycle, simply switching the first portion from the first position to the second position relative to the second portion is sufficient. When the first portion is in the second position relative to the first portion, the size of the main beam tube is smaller, thus making the overall size of the telescopic folding bicycle smaller.

The utility model relates to the technical field of optical cables, and discloses a micro-beam tube OPGW optical cable which comprises a leather hose, an elastic buffer layer is arranged on the inner side of the leather hose, a metal layer is fixedly installed on the inner layer of the elastic buffer layer, and an optical cable tube is arranged on the inner side of the metal layer. An annular layer is arranged on the inner wall of the metal layer; the moisture-proof part is arranged on the inner wall of the metal layer and on the outer side of the leather hose for moisture-proof treatment; the moisture-proof part comprises a floating ball piece and a plugging piece, the floating ball piece is arranged on the inner wall of the metal layer, and the floating ball piece is connected with the plugging piece. The V-shaped frame is extruded by the cotton ball, then the ventilation cylinder is moved to the concave position of the vertical piece through the matching effect of the V-shaped frame, the vertical piece and the extrusion spring, ventilation is formed at the moment, then through the matching effect of the ventilation cylinder, the ventilation pipe and the cotton ball, drying of the outside is accelerated, blowing is formed in the reverse direction, internal moisture is blown away, and therefore the automatic moisture-proof effect is achieved.

The present application relates to cat climbing frame technical field, concretely is a cat climbing frame for removing impurity hair, including climbing frame mechanism, trimming exhaust mechanism installed on climbing frame mechanism and straightening cap mechanism installed between trimming exhaust mechanism and climbing frame mechanism, when cat pet walks on the inside plate piece of beam plate, the main conductive sheet fixed on the inside plate piece can be pressed and adhered to the top of auxiliary conductive sheet, and the outer frame is fixedly installed on both sides of the outside of beam plate, with the descending of beam plate, the outer frame also pushes the inner cavity of climbing ladder bin towards two beam tube pads, at this time, the semicircular arc plate in the beam tube pad drives the multiple brush columns fixed on the inner wall to press and straighten the hair on the skin of cat pet, when cat pet passes through the semicircular arc plate, the hair to be dropped or broken on cat pet is cleaned to the inside of beam plate, finally, along with the directional blowing of turbine fan blade, the airflow in the inner cavity of climbing ladder bin can blow the dropped hair to the inner cavity of storage drawer.

The invention provides a laser pumping cesium atom beam clock parameter self-adaptive setting device and method, and relates to the technical field of atomic clocks. A cesium beam tube driving unit; a frequency-stabilized laser light source unit; an acousto-optic frequency shift unit; a crystal oscillator frequency locking unit; a temperature acquisition and control unit; wherein the main control unit is connected with each controlled module through a communication interface, and the built-in computer runs upper computer software: calculating relative frequency deviation and Arron variance, and obtaining a frequency deviation sequence and an Arron variance data set; determining an optimal working parameter combination corresponding to the peak value; primary temperature control, secondary temperature control and tertiary temperature control are executed in a linkage mode, and temperature gradient compression and wavelength stability control are achieved; and comparing the real-time monitoring parameter with a preset threshold value, and judging an alarm level, thereby triggering a system response instruction. The method has the beneficial effects that the labor cost is reduced, the temperature adaptability is improved, and the long-term stability index is improved.

The utility model discloses a safety type electric vehicle frame which comprises a girder pipe, two side pipes of an integrated structure are symmetrically and fixedly connected to the side, close to the head, of the girder pipe, front pedal pipes are fixedly connected to the sides, close to the head, of the side pipes, the front pedal pipes are of a V-shaped structure, and a girder reinforcing pipe is fixedly connected to the tail of the girder pipe. The two ends of the girder reinforcing pipe are fixedly connected with the side pipes respectively, pedal supports are fixedly connected to the sides, close to the middles, of the tops of the side pipes, pedal rear supports are fixedly connected to the tops of the pedal supports and are of an M-shaped structure, and handrail supports are fixedly connected to the sides, close to the tails, of the tops of the side pipes and are of a double-layer structure. The top of the crossbeam pipe is fixedly connected with a head pipe. Through the structure, connecting parts such as the pedal rear support, the front pedal tube, the armrest support and the front wheel mud tile are reasonably designed, the safety and durability of the electric vehicle are improved, and more comfortable and safer riding experience is provided for a rider.