1199 results about "Photoswitch" patented technology

A vacuum adsorber includes a housing having an accommodating cavity and an opening communicating with the accommodating cavity; an integrated vacuum pump arranged inside the accommodating cavity; a control panel arranged inside the accommodating cavity and controllably connected with the integrated vacuum pump; wherein the control panel is controllably connected with a photoelectric switch; a power-up assembly having a guide piece and a shading movement portion; and an activating piece covering inside the opening of the housing. By means of setting the activating piece to push the shading movement portion to move in the movement cavity, when the shading movement portion moves to block beams, it causes the state of beams to change, and then voltage inside the photoelectric switch changes; when the control panel detects a change in voltage, it controls the pump to start operating; thereby improving the stability and reliability during starting the pump.

A reciprocating mechanism for driving a synchronous belt through forward and reverse rotation of a motor comprises: a mounting bracket, a motor, a grating, a slot-type opposing photoelectric switch, a control board, a Hall switch, a load, and a magnet. The mounting bracket is equipped with a driving wheel and a driven wheel, which driving wheel is connected to the driven wheel through the synchronous belt. A side of the mounting bracket is provided with the motor. An output shaft of the motor is connected to the driving wheel and extends to the other side of the mounting bracket. The other side of the mounting bracket is provided with the control board which is functionally connected to the motor. A lower end of the control board is provided with the slot-type opposing photoelectric switch which mates with the grating mounted on a free end of the output shaft of the motor. A plurality of the Hall switches are uniformly distributed along a length direction on a side face of the control board adjacent to the mounting bracket. The synchronous belt is provided with a load. A side of the load adjacent to the control board is provided with the magnet mating with the Hall switch. The present invention is characterized by a variable stroke, a long stroke, a low noise and smooth motion.

The invention relates to the technical field of industrial automation control, and particularly discloses a rotating speed detection and closed-loop control system based on photoelectric sensing and a PLC, and the system comprises at least one rotating body which is a rotating speed controlled object, and the surface of the rotating body is provided with a configurable number of reflection mark areas or speed measurement holes; the proximity photoelectric switches are in one-to-one correspondence with the rotating bodies, are aligned with the reflection mark areas or the speed measurement holes, and are used for detecting rotation information of the rotating bodies and generating original pulse signals; a high-speed counter input port of the PLC is electrically connected with signal output ends of the proximity photoelectric switches, and a pulse preprocessing module, a rotating speed calculation module, a deviation processing module, a control algorithm module and a signal adaptation module are arranged in the PLC. The PLC and the proximity photoelectric switch which are widely applied in the industrial field and high in popularity rate are adopted as core technical components, and expensive special servo controllers, encoders and other devices are not needed, so that the hardware purchase cost of the system is greatly reduced.

The present invention addresses the problem of providing an improved RpBphP1 mutant and an improved RpPpsR2 mutant in such a manner that the binding and dissociation can be reliably controlled by light irradiation and shielding of near-infrared light. More specifically, the present invention is a proteome comprising two types of proteins that bind to each other under irradiation of near-infrared light, the proteome being a group of RpBphP1 mutants and wild-type RpPpsR2, a group of wild-type RpBphP1 mutants and RpPpsR2 mutants, or a group of RpBphP1 mutants and RpPpsR2 mutants, the binding of the proteome being greater than that of the wild-type RpBphP1 mutants and that of the wild-type RpPpsR2, and the binding of the proteome being less than that of the wild-type RpBphP1 mutants and that of the wild-type RpPpsR2. The binding in a dark place is weak and / or the binding under the irradiation of near-infrared light is strong.

The invention discloses a movable middle cigarette carton and piece cigarette two-dimensional code information association system which mainly comprises a conveying belt with a plurality of rollers and locking type universal wheels, a portal frame arranged above the conveying belt in a crossing mode and a fixing support arranged on the side of the conveying belt. The first code scanning head is triggered by a first diffuse reflection type photoelectric switch and reads an input two-dimensional code on the open cigarette box; the two second code scanning heads are connected with the portal frame through an L-shaped bracket, and are triggered by a plurality of second diffuse reflection type photoelectric switches for multiple rounds to read two-dimensional codes on a plurality of columns of strip boxes in the smoke box; the first code scanning head, the second code scanning head, the first diffuse reflection type photoelectric switch and the second diffuse reflection type photoelectric switch are respectively in electric signal connection with the PLC; the first code scanning head and the second code scanning head are further in electric signal connection with the industrial personal computer. According to the method, strip-piece two-dimensional code information association is automatically completed in the conveying process of the cigarette boxes after the cigarette boxes are boxed, the labor intensity of workers is effectively reduced, and the cost is remarkably saved.

The invention provides a docking method and system of an unmanned transport vehicle and a production line, and the unmanned transport vehicle, and relates to the technical field of cargo transportation. In response to the cargo transportation instruction, moving to a preset cargo docking area along a navigation path carried by the cargo transportation instruction; reducing the moving speed of the unmanned transport vehicle to a preset first speed, wherein the first speed is lower than a set speed threshold value; controlling the unmanned transport vehicle to stop moving under the condition that the photoelectric switch positioned on the vehicle head detects the first reflecting plate positioned on one side of the production line and the photoelectric switch positioned on the vehicle tail detects the second reflecting plate positioned on the other side of the production line; receiving the distance, collected by a distance sensor, between the unmanned transport vehicle and the production line; when the distance is larger than a set distance threshold value, the unmanned transport vehicle is controlled to move close to the production line until the distance is smaller than or equal to the set distance threshold value, and butt joint with the production line is accurately completed.

The embodiment of the invention provides a real-time collection method and system for welding heat input, and the method comprises the steps: sensing the displacement movement of a welding gun or a welding wire through a diffuse reflection photoelectric switch array installed on the surface of a pipeline, and generating a corresponding pulse trigger signal; current data and voltage data of a welding loop are sensed through a Hall sensing system, and corresponding analog electric signals are generated; synchronously acquiring the pulse trigger signal and the analog electric signal through a multi-channel data acquisition device, and converting the analog electric signal into a digital signal with a timestamp; real-time welding speed data are calculated according to the time sequence of the pulse trigger signals and the preset space geometrical relation of the diffuse reflection optoelectronic switches; performing multi-stage filtering processing on the current data and the voltage data; a unified timestamp is determined, and time sequence matching is conducted on the filtered current data, the filtered voltage data and the filtered welding speed data based on the unified timestamp; and calculating to obtain a welding heat input value.

The invention provides a Schiff base optical switch material, the molecular structural formula of which is at least one of the following: # imgabs0. The Schiff base optical switch material has the advantages that the voxel generation and disappearance speeds are both smaller than the limit resolution of human eyes, the response speed is high, and the dynamic refreshing of a three-dimensional image can be realized. Under independent excitation of ultraviolet light or visible light, the luminous intensity of the Schiff base photoswitch material is low, the luminous intensity at the intersection point of the ultraviolet light and the visible light is high, and a formed three-dimensional image is high in brightness and high in contrast ratio. The Schiff base photoswitch material can still be stably switched on and off under multiple excitation of ultraviolet light and visible light, and is good in fatigue resistance and high in stability. The invention also provides a preparation method of the Schiff base optical switch material and a static body three-dimensional display system comprising the Schiff base optical switch material.

The utility model provides an automatic detection and alarm device for deviation of a silk thread belt conveyor, which includes a bottom plate, an alarm, a left photoelectric switch, a right photoelectric switch, a left opening and closing screw block, a right opening and closing screw block, and an adjusting screw. A guide rail groove is provided on the top surface of the bottom plate, and two opening and closing screw blocks are respectively movably engaged at the left and right ends of the guide rail groove; the adjusting screw runs through the bottom plate and the guide rail groove, and the left and right sections of the adjusting screw have opposite screw rotation directions, and the lower parts of the two opening and closing screw blocks are respectively provided with screw holes for matching with the left and right sections of the adjusting screw; an inverted L-shaped plate is vertically provided on the top surfaces of the two opening and closing screw blocks, and the detection probes of the two photoelectric switches are respectively arranged on the horizontal plates of the two inverted L-shaped plates, and the reflection plates of the two photoelectric switches are respectively arranged on the lower parts of the vertical plates of the two inverted L-shaped plates and are respectively located directly below the above-mentioned two detection probes; the left photoelectric switch and the right photoelectric switch are respectively electrically connected to the alarm. The device of the utility model has good versatility.

The invention belongs to the technical field of spectrum detection, and particularly relates to a light LIBS (laser-induced breakdown spectroscopy) online detection device and method capable of automatically focusing, and the device sequentially comprises a photoelectric switch, a pre-detection system, a controller, a delayer, a pulse laser, a reflector, a zooming unit, an ellipsoidal reflector, a displacement adjusting table and a transmission diaphragm according to a control logic and a light propagation path, an optical fiber coupling unit, a spectrometer and a signal intensity detector. According to the telecentric lens imaging pre-detection system, zooming can be easily achieved in the mode that the zoom lens and the displacement adjusting table drive the ellipsoidal reflector and the optical fiber coupling unit to move synchronously, the telecentric lens imaging pre-detection system can adapt to objects of different heights and forms, the problem that the motion load is large in the zooming process is solved, light weight is achieved, and the imaging precision is improved through the telecentric lens imaging pre-detection system. The focusing range can be judged in advance without changing from the maximum focusing range to the minimum focusing range, so that the detection and analysis efficiency is improved.

The invention relates to the technical field of wind power gear forging, in particular to forging equipment for wind power gear forgings and a forging method of the forging equipment. A protective vertical plate is fixed to the corner of the top of the base, a top plate is installed at the top of the protective vertical plate, and a forging hydraulic machine is installed at the middle end of the top plate. Wherein the forging platform is located at the top of the base; wherein the number of the overturning bases is two, the two overturning bases are installed at the two ends of the top of the forging platform, and guide grooves are formed in the upper ends of the overturning bases. By means of the arrangement of the overturning base, manual near-field operation is replaced, safety risks caused by high-temperature and heavy forgings are completely eradicated, safe interlocking is formed by the groove type photoelectric switch and the Z-shaped shielding piece, it is ensured that the action is accurate and reliable, the overturning time is shortened to be the shortest, a high-temperature forging window of the forgings is fully utilized, and the heating frequency is reduced.

The invention relates to the technical field of vehicle detection, and particularly discloses a vehicle overall dimension measurement method. The method comprises the following steps: 1, respectively installing a left laser radar and a right laser radar on two sides of a detection area where a vehicle runs, 2, unifying point cloud data sets collected by the left laser radar and the right laser radar to the same coordinate, and denoising the point cloud data according to a set threshold range to obtain a left point cloud data set L and a right point cloud data set R; 3, subtracting the X coordinate of the R from the X coordinate of the L to obtain the width of the vehicle; obtaining a Z coordinate value from the data set R or L to obtain the height of the vehicle; 4, detecting the time T1 and T2 of the vehicle entering and exiting the detection area through the left laser radar and the right laser radar; the photoelectric switch array measures the average speed V of the vehicle, and the vehicle length is obtained through calculation according to a formula; and 5, measuring the wheelbase of the vehicle through the photoelectric switch array. The objective of the invention is to solve the problems that three laser radars are adopted to measure the overall dimension of a vehicle, the required vehicle site is large, and the equipment cost is high.

The automatic tooth aligning mechanism for the transverse tool rest is characterized by comprising a mounting frame, a mounting plate, a first telescopic air cylinder, a moving table, a first sliding rail, a fine adjustment assembly, the tool rest, a mounting rod and a photoelectric switch, the mounting plate is fixed to one end of the mounting frame through screws, and the first telescopic air cylinder is fixedly mounted on the mounting plate; the telescopic end of the first telescopic air cylinder is connected with a movable table, the movable table is in sliding connection with a first sliding rail installed on an installation frame, a fine adjustment assembly is installed on the movable table, a tool rest is installed on the fine adjustment assembly, an installation rod is fixed to the other end of the installation frame through a screw, and a photoelectric switch is arranged at the upper end of the installation rod. The position information of the gear part to be machined is recognized through the optoelectronic switch and sent to the controller in the control cabinet, the controller controls the first telescopic air cylinder and the second telescopic air cylinder to operate, the gear aligning action is automatically completed, and the labor amount of workers is reduced.

The invention discloses a high-precision liquid level measuring device and method based on sweep frequency interference measurement, belongs to the technical field of optical-mechanical-electrical integrated measurement, and is used for high-precision liquid level measurement. The light path is composed of a frequency sweep correction light path and a measurement calibration light path. The device comprises a sweep-frequency light source, an optical fiber splitter, a high-speed acquisition card, a computer, an optical fiber circulator, an optical fiber reflector, a Fabry-Perot (FP) etalon, a balanced photoelectric detector (BPD), a liquid level measuring probe and the like. The FP etalon realizes a sweep frequency correction function, a measurement calibration light path switches channels through the one-to-two photoelectric switch, and high-speed signal acquisition is carried out through the BPD and the high-speed acquisition card. The measuring process is free of mechanical movement and has the advantage of being free of maintenance; the FP etalon is introduced for nonlinear frequency sweeping calibration, the measurement precision is improved, the micron-level measurement precision can be achieved under the better experiment condition, and the non-contact measurement method can meet the requirement for high-precision liquid level measurement in the fields of chemistry, chemical engineering and the like.

The invention discloses a paper feeding device and method for a radioactive aerosol activity monitor, and belongs to the technical field of nuclear radiation measuring instruments. The device comprises a paper feeding case and perforated filter paper; a paper feeding power assembly and a filter paper supporting assembly are arranged in the paper feeding case, and the paper feeding power assembly comprises a main motor and an auxiliary motor; the filter paper supporting assembly comprises a first filter paper shaft and a second filter paper shaft; a photoelectric switch is arranged on the second filter paper shaft; the method comprises the following steps: 1, mounting filter paper; 2, feeding filter paper; and 3, paper feeding detection. Through a dual-motor mode, the perforated filter paper is synchronously controlled to move, and the fault that the filter paper slips or is stacked under the condition that a driven shaft is loosened under the condition of a single motor, or the filter paper is broken due to the fact that the motor pulls the filter paper under the fastening condition is solved; the unstable factors that under the condition of a traditional single motor, the tightness degree of the driven shaft cannot guarantee the standard performance of adjustment every time due to manual non-standard adjustment and the driven shaft can be gradually loosened and needs to be adjusted again can be directly removed, and the operation stability of the whole device is guaranteed.

The invention provides a non-contact shadowless lamp self-adjustment control method and system based on infrared induction, and relates to the technical field of shadowless lamp control, and the method comprises the steps: arranging a reflective infrared photoelectric switch to a predetermined entrance and exit position of a target space, and carrying out the dynamic monitoring to obtain a first monitoring result; if the first preset constraint is met, activating a pyroelectric human body infrared sensor to track and monitor the first moving target to obtain a first tracking result; if the second preset constraint is met, performing statistics to obtain a first target total number; taking the first target total number as a lighting judgment basis to obtain a self-adjusting control instruction, and calling a non-contact control mechanism; and performing self-adjustment control on the target shadowless lamp. The technical problems that in the prior art, a shadowless lamp usually depends on a manually set static mode, dynamic adjustment is difficult to achieve according to changes in an actual scene, the flexibility and adaptability of illumination are affected, and then the illumination effect is not ideal are solved.

The utility model relates to the technical field of chain type machines, and discloses a fire-fighting automatic overturning chain type machine which comprises a first front-end chain type machine, a first support is installed at the lower end of the first front-end chain type machine, and a first chain is installed in the first front-end chain type machine through a first transmission shaft. According to the fire-fighting automatic overturning chain type machine, the overturning chain type machine is arranged between the first front-end chain type machine and the second front-end chain type machine, and a fireproof rolling shutter door is installed at the upper end of the overturning chain type machine, so that when a fire disaster occurs, the fireproof rolling shutter door moves downwards, and meanwhile, a photoelectric switch is triggered to control a first supporting plate to start; the first supporting plate drives the overturning chain type machine to overturn, after the overturning chain type machine overturns, an opening is formed between the first front-end chain type machine and the second front-end chain type machine, meanwhile, the fireproof rolling shutter door can move downwards, and then the two ends of the first front-end chain type machine and the two ends of the second front-end chain type machine are isolated. Further spreading of the fire behavior when a fire disaster occurs is prevented; and unnecessary loss is reduced.

The pneumatic steel ball sorting module for PLC teaching and training and its assessment method include a mounting plate, a steel ball blanking component, a steel ball specification determination component, a steel ball classification and collection component and a PLC control unit; the steel ball blanking component pushes the steel ball into the steel ball specification determination component through a slide cylinder, the steel ball specification determination component is provided with a step groove, each step of the step groove is provided with a photoelectric switch, and the steel ball specification is determined according to the blocking of the photoelectric switch, the step groove is connected to the flip cylinder, the steel ball classification and collection component is provided with a slideway, a rotating baffle, and a receiving box, the steel ball enters the slideway from the step groove after the flip cylinder drives the flip, the rotating baffle is driven by the push-pull cylinder, and the steel ball is guided into the corresponding receiving box through the rotating baffle, and the push-pull cylinder, the flip cylinder, all the photoelectric switches, and all the push-pull cylinders are electrically connected to the PLC control unit. During the assessment, the steel balls are accurately sorted and put into the corresponding receiving box according to the edited PLC program, and the assessment is passed, otherwise the assessment fails.

A nucleic acid extraction and conversion integrated machine and a method therefor. The machine comprises: a machine frame, a sample tube rack, a TIP rack, a centrifuge tube rack, a dual-centrifuge module, a multi-lid opening module, a dual-mechanical-arm module, a stepwise nucleic acid extraction module, an inverted mixing device, and a display and control module. Corresponding nucleic acid extraction processes can be edited on the basis of different samples, and the machine is applicable to the detection of most samples, thereby saving on an occupied space. Centrifuge tubes can be accurately picked up according to numbers, and a basket of a centrifuge stops at a specified position after a zero trigger triggers a photoelectric switch, so that mechanical arms can accurately grab or put the centrifuge tubes in the basket. During a centrifugal operation, the basket is in an inclined state similar to that of a fixed-angle rotor, so that the working area on a plane is reduced while a centrifugal effect is guaranteed. The basket in the design can have a vertical state under any working condition when the centrifuge stops, so that the mechanical arms can vertically and accurately grab the centrifuge tubes.

The invention relates to a greenhouse automatic vine releasing robot and a vine releasing method. The vine releasing robot comprises a movable chassis, a lifting mechanism, a control cabinet, a front mechanical arm, a rear mechanical arm, an electric clamping jaw, a light curtain sensor and a photoelectric switch. The control cabinet and the lifting mechanism are installed on the movable chassis, and the two mechanical arms are fixed to the surface of a top platform of the lifting mechanism. Electric clamping jaws are installed at the tail ends of the two mechanical arms, a photoelectric switch is arranged at the top end of a main shaft of the front mechanical arm, and a light curtain sensor is installed on the tail-end clamping jaw. The greenhouse vine releasing device is suitable for greenhouse crops in a hook vine releasing mode, the height of a vine hanging steel wire is detected through a photoelectric switch above the lifting mechanism before work is started, the vine releasing hook is accurately positioned through a light curtain sensor, the vine releasing hook is taken and placed through a mechanical arm, automation of greenhouse vine releasing work is achieved, and the work efficiency is improved. And the working efficiency of greenhouse vine releasing operation is improved.

The utility model relates to a product inspecting and removing device which comprises a horizontal conveying belt, and a pushing assembly and a backup plate are arranged on the same side of the conveying belt. The product checking and removing device further comprises a first photoelectric switch assembly, a second photoelectric switch assembly and a PLC module. The first photoelectric switch assembly comprises a first stand column, a cross beam and a first photoelectric sensor. The cross beam is vertically arranged above the conveying belt, can slide up and down along the stand columns and is selectively fixed on the stand columns; the first photoelectric sensor is movably arranged on the cross beam; the second photoelectric switch assembly comprises a second stand column, a second photoelectric sensor and a third photoelectric sensor, the PLC module is connected with the first photoelectric sensor, the second photoelectric sensor and the pushing assembly. The device has the advantages that the device is suitable for products with rectangular sections of different specifications and models, simple in structure and high in adaptability, and the rejection efficiency and the success rate of unqualified products on an assembly line can be guaranteed.

A novel composition comprising a multiple-funnel trap, a light source, a solar panel, a battery, a photoswitch to control the light source, and a supporting structure can be effectively used to capture night-flying adult kissing bugs (Hemiptera: Reduviidae).

The objective lens converter comprises a rotating disc used for installing an objective lens, the upper surface of the rotating disc is provided with an annular upper groove used for containing a ball, the lower surface of the rotating disc is provided with an annular lower groove used for containing the ball, and the rotating disc is provided with an initial position flag bit; the upper cover is arranged above the turntable and is provided with an annular cover plate groove and an inner annular flange; an output shaft of the stepping motor is directly coupled with the center of the turntable; a mounting hole is formed in the base, and an annular guide rail is arranged on the base; the magnetic encoder is installed on the stepping motor and used for controlling the rotation angle of the stepping motor; the first photoelectric switch sensor is mounted in the cover plate groove of the upper cover; and the second photoelectric switch sensor is arranged in the cover plate groove of the upper cover. According to the invention, the response speed and positioning precision of objective lens conversion are improved.

The utility model provides a photoelectric switch capable of simultaneously detecting two kinds of cloth, which comprises a switch shell, a mounting groove is arranged on the switch shell, at least one photoelectric sensor is arranged on each of two side walls of the mounting groove, a double-sided reflecting piece is arranged between the two side walls, the double-sided reflecting piece is provided with two reflecting surfaces, and the two reflecting surfaces are arranged on the mounting groove. Wherein the reflecting surface is arranged to be perpendicular to the photoelectric sensor, a detection channel is formed between the photoelectric sensor and the reflecting surface, a light-transmitting piece is arranged between the detection channel and the photoelectric sensor, the photoelectric sensor is electrically connected with the circuit board and the connector in sequence, and a detection module is further arranged on the circuit board.

The utility model discloses a novel coulter mixer bottom valve sealing device which comprises a discharging pipe, a turnover motor and an air bag valve, a discharging opening is formed in the side wall of the discharging pipe, a shaft rod is arranged at the output end of the turnover motor, a swing arm is arranged at the end of the shaft rod, a valve cover fixedly connected with the swing arm is arranged on the side wall of the air bag valve, and the air bag valve is arranged on the valve cover. When the valve is closed, the air bag valve firstly passes through the second photoelectric switch and then passes through the first photoelectric switch, photoelectric signals are sent to the controller, the controller controls the overturning motor to stop, the air supply pump is controlled to inflate the air bag valve, the air bag expands, and the discharging opening is blocked, so that the air bag valve is opened, and the discharging opening is closed. The sealing performance is good, and loosening is not prone to occurring.

The invention discloses PCB surface defect detection equipment based on CIS, and belongs to the field of machine vision detection. According to the invention, the technical problem that the detection quality and the detection efficiency cannot be considered at the same time in the existing PCB surface defect detection mode is solved. The transmission assembly is installed at the upper end of the equipment frame assembly in the horizontal direction, the driving assembly, the detection assembly and the detection trigger assembly are all installed on the equipment frame assembly, the driving assembly is arranged on the lower side of the transmission assembly, the detection assembly is arranged in the middle of the upper side of the transmission assembly, and the detection trigger assembly is arranged on the front portion of the upper side of the transmission assembly. The detection triggering assembly comprises a photoelectric switch, the detection assembly comprises a CIS body, the signal output end of the photoelectric switch is connected with the CIS body, the PCB is arranged on the upper surface of the transmission assembly, the PCB sequentially passes through the lower side of the detection triggering assembly and the lower side of the detection assembly through the moving transmission assembly, and picture collection of the PCB is achieved through the CIS body. The detection quality and the detection efficiency are both considered, and the method is used for PCB surface defect detection.

The utility model relates to the technical field of riveting fool-proof devices, and discloses a fool-proof device for feeding more rivets in riveting operation, which comprises a mounting frame, two limiting frames arranged on one side of the bottom of the mounting frame, a material conveying pipe arranged on one side of each limiting frame, a riveting punch arranged on one side of the top of the mounting frame, rivet bodies arranged inside the limiting frames, and a material conveying pipe arranged on the other side of each limiting frame. A plate for riveting the rivet bodies is arranged on the lower side of the mounting frame, a photoelectric switch for monitoring and preventing excessive conveying of the rivet bodies is mounted on one side of the mounting frame, and the number of the rivet bodies in the second limiting groove can be rapidly and accurately detected through the photoelectric switch; when the number of the rivet main bodies is wrong, the alarm is triggered immediately and the riveting punch is controlled to stop moving, so that production interruption and delay caused by wrong number of the rivet main bodies are avoided, fool-proof operation can ensure that a correct number of rivet main bodies are used in each riveting process, the product quality problem caused by insufficient or excessive number of rivet main bodies is avoided, and the production efficiency is improved. And the overall quality of the product is improved.

The utility model discloses a stable detection structure of an ultramicro spectrophotometer, which comprises a fixed plate, the bottom of the fixed plate is fixedly connected with a motor fixing seat and a support plate, and a rotating plate is hinged above the fixed plate; a second optical fiber is installed in the rotating plate, optical fiber heads at the two ends of the second optical fiber correspond to optical fiber heads of the first optical fiber and the third optical fiber in the vertical direction, the second optical fiber is fixedly connected into the fixing plate, and the third optical fiber is fixed to the transmission block. Linear sliding grooves are formed in the left side and the right side of the transmission block correspondingly, adjusting blocks are installed in the linear sliding grooves, and light barriers are installed on the opposite outer sides of the two adjusting blocks correspondingly. Photoelectric switches corresponding to the light barriers are installed on the front side and the rear side of the motor fixing base. According to the stable detection structure of the ultramicro spectrophotometer provided by the utility model, the position of the light barrier can be accurately adjusted, accurate positioning of ultramicro measurement is realized, and the problem that an optical fiber head is easy to collide can be solved.

An automatic feeding control system for steel coil uncoiling comprises a storage seat, a feeding trolley and an uncoiling machine which are sequentially arranged, and a lifting frame is arranged on the feeding trolley; a steel coil distance laser range finder, a steel coil outer diameter laser range finder, an encoder and an original point position detection switch are mounted on the uncoiling machine; a descending position detection switch is arranged on the feeding trolley; a material correlation photoelectric switch, a material storage stop detection switch, a steel coil inner diameter correlation photoelectric switch, a material storage speed reduction position detection switch, a steel coil position confirmation correlation photoelectric switch, an uncoiling speed reduction position detection switch and an uncoiling stop position detection switch are sequentially arranged in the direction from the material storage seat to the uncoiling machine. The problems existing in an existing uncoiling feeding mode are solved, the whole process does not need participation of personnel, the influence of dust and noise on the body health of operators is effectively reduced, and the threat to life safety in the feeding process is thoroughly eradicated; each link is detected and confirmed, and the whole feeding process is accurate and rapid.

The invention provides a track shoe dismounting and mounting device, which relates to the technical field of engineering machinery, and comprises a track support, a stepping device, an oil cylinder base assembly, a hydraulic station and a control console, a first photoelectric switch, a second photoelectric switch and a third photoelectric switch are arranged on the oil cylinder base assembly; the track support is used for allowing the track shoe to horizontally slide on the upper surface, the stepping device is used for controlling the horizontal moving distance of the track shoe in a stepping mode, and the oil cylinder base assembly is matched with positioning of the first optoelectronic switch, the second optoelectronic switch and the third optoelectronic switch. The stepping device drives the track shoe to move on the track support, accurate displacement control can be achieved, the track shoe is rapidly mounted and dismounted through cooperation with the oil cylinder base assembly, operation is flexible and convenient, the structure is simple, dismounting and mounting of the track shoe are achieved through the oil cylinder through hydraulic power, and the labor intensity of workers is effectively relieved.