789 results about "Magnetic switch" patented technology

A rodeo event timing system having a neck collar adapted to extend around a neck of a calf, a first cable having one end affixed adjacent one end of the neck collar, a second cable having one end affixed adjacent another end of the neck collar, and a switch assembly secured to opposite ends of the first cable and the second cable. The switch assembly is adapted to separate when the ends of the neck collar separate so as to produce a start timing signal. The switch is a magnetic switch having a ball-and-socket configuration.

The invention discloses an intelligent alarm system and method for a distribution box, and relates to the technical field of intelligent alarm. The magnetic field intensity value of a distribution box door magnetic switch is monitored in real time to judge whether a distribution box door is in an open state; if so, collecting a vibration signal of the distribution box to judge whether the vibration of the distribution box is abnormal; recording the opening timestamp of the door of the distribution box, and judging the coincidence degree of the door opening time of the distribution box and the historical door opening time; jointly judging whether the door opening state of the current distribution box door is normal door opening or abnormal door opening, and if the door opening state is abnormal, sending out a first-level alarm; if normal, monitoring the door opening duration of the distribution box door and the current environmental data to judge whether a secondary alarm indicating that the hidden danger of damaging the power equipment exists is sent out; therefore, illegal door opening of the distribution box can be judged according to the change of the magnetic field state of the door magnetic switch, the vibration of the distribution box and the opening time of the distribution box door, and the false alarm rate is reduced; therefore, the fault hidden danger of the power equipment in the power distribution box cannot be further deepened.

The invention discloses a sensor clamping mechanism and a mutual inductor crimping fault detection device and method, and relates to the technical field of mutual inductor detection. In a project verification process of an existing voltage-withstanding table and an error table, abnormal conditions such as inclination of a mutual inductor body, inaccurate tray positioning, abnormity of a magnetic switch, air leakage of an air cylinder air pipe and the like occur, so that a terminal stud of a test table cannot be in contact with a secondary side terminal of a mutual inductor to be tested; and detection interruption or false detection of a corresponding mutual inductor exists, so that the verification efficiency is reduced. According to the frame body, the measuring rod, the elastic piece and the sensor, the sensor can detect the relative displacement between the measuring rod and the frame body, if the relative displacement is within a normal range, the terminal stud is in successful crimping contact, and if the relative displacement exceeds the normal displacement range, the terminal stud has a crimping fault. Therefore, the system judges that the wiring terminal of the to-be-detected mutual inductor is failed in crimping with the wiring end, automatically identifies the crimping fault of the wiring end, and improves the operation efficiency of an assembly line.

The utility model discloses an electric overturning poly V-belt roller machine, which is mounted at a fireproof door and comprises a mounting bracket, a main conveying frame arranged on the mounting bracket, an overturning bracket and a driving component for driving the overturning bracket to overturn around the main conveying frame, a plurality of main conveying rollers are rotationally installed on the main conveying frame, a plurality of auxiliary conveying rollers are rotationally installed on the overturning support, the main conveying frame and the overturning support are rotationally connected through the adjacent auxiliary conveying rollers, and the driving assembly is an electric push rod and is provided with a magnetic switch. After the electric push rod extends, the overturning support is overturned to the horizontal position, accurate conveying of goods is guaranteed, and after the electric push rod retracts, it is guaranteed that the fireproof door is completely closed. Compared with the prior art that a rotating shaft is driven by a motor to turn over, the turnover mechanism has the advantages that the structure is simplified, the cost is reduced, the assembly steps are simplified, and the turnover stop position is more accurate.

The invention relates to a power grid power supply distribution box capable of locking intelligent power connection and a locking power connection method thereof, and the power grid power supply distribution box comprises a driving part which is installed on a second box door, is provided with a gear cylinder, and is used for driving the gear cylinder to transversely move and intermittently rotate; and the lifting piece is arranged on the second box door through a guide block and is connected with the gear cylinder. According to the invention, when the second box door is opened, the door magnetic switch can automatically disconnect the circuit to trigger the conduction of the opening loop, and this operation enables the circuit breaker to trip to cut off the power supply in the distribution box; through the mode, all branch switches in the distribution box can be switched off step by step according to a certain sequence under the action of the step-by-step locking structure, so that safe power failure can be realized during power connection; by means of the step-by-step power-off operation design, large-scale power cut-off can be effectively avoided, and equipment damage caused by current impact or voltage fluctuation is reduced.

A method, apparatus and device for controlling a vehicle heating system, and a vehicle and a storage medium. The method comprises: acquiring, in real time, an ambient temperature, passenger-compartment data, pre-valve pressure of a first electronic expansion valve (33) and suction pressure of a second electronic expansion valve (36); starting a heat pump (31), an internal heat exchanger (32), an external heat exchanger (34) and an electromagnetic switch (35), opening the first electronic expansion valve (33) according to a first initial opening degree, and opening the second electronic expansion valve (36) according to a second initial opening degree; performing automatic control on the first electronic expansion valve (33) on the basis of the pre-valve pressure and preset target pre-valve pressure, such that the opening degree of the first electronic expansion valve (33) automatically changes, according to a first preset correspondence, as the pre-valve pressure changes; and performing automatic control on the second electronic expansion valve (36) on the basis of the suction pressure and preset target suction pressure, such that the opening degree of the second electronic expansion valve (36) automatically changes, according to a second preset correspondence, as the suction pressure changes. Therefore, the vehicle costs of a vehicle can be reduced.

The invention relates to the technical field of beacon lights, in particular to a beacon light capable of being installed through an unmanned aerial vehicle and the unmanned aerial vehicle. The beacon light comprises a beacon light body, a power module is fixed in the beacon light body, and a mounting groove is formed in the lower end of the beacon light body; a mounting groove is formed in the lower end of the beacon light body, a plurality of electromagnetic bolts which are distributed along the mounting groove in an annular array mode are arranged in the lower end of the beacon light body, a conical top base is fixed to the upper end of the beacon light body, and a magnetic switch is fixed in the conical top base and connected to a circuit between the power module and the electromagnetic bolts in series. The beneficial effects are that the unmanned aerial vehicle is utilized to realize automatic replacement of the beacon light device, an operator can perform remote operation without arriving at a site, the efficiency is high, manpower and material resources are saved, the operation safety is high, and the unmanned aerial vehicle has very high use value and popularization significance.

The utility model belongs to the technical field of electromagnetic switches, and particularly relates to an electromagnetic switch with an indicating lamp, which comprises a bottom shell, a top cover, a closing button, an opening button, the bottom shell and a contact pin seat assembled by a buckle, a first contact pin and a second contact pin are assembled on the contact pin seat, and an electromagnetic coil is assembled on one side of an inner cavity of the bottom shell through a mounting frame. A moving seat is assembled on the contact pin seat in a sliding mode, a movable contact plate is arranged on the moving seat through a first spring, the warped plate drives the moving seat to move up and down in a reciprocating mode when swinging, connection and disconnection of the first contact pin and the second contact pin are achieved, a second spring is connected between the moving seat and the top cover, and a sleeve seat is arranged on the top cover. The second lead is propped against the second contact pin through a third spring in the sleeve seat; according to the utility model, the contact pin seat and the bottom shell are assembled in a buckling manner, so that quick disassembly and reassembly during maintenance are facilitated, the electromagnetic switch does not need to be integrally disassembled, the maintenance time and cost are greatly saved, the electrical connection is more reliable, and the stability and durability of the whole structure are improved.

The invention relates to a contact resistance and state detection method for an electromagnetic switch device of a railway vehicle, and the method comprises the steps: injecting an AC signal into a to-be-detected contact of the electromagnetic switch device, and then collecting an AC voltage signal of the to-be-detected contact; calculating a first resistance value of the contact to be measured according to the acquired alternating current signal and the alternating voltage signal; and further comparing the resistance value obtained by detecting the contact to be detected with a pre-configured resistance scale value, and judging whether the contact to be detected is in a good state or not according to a comparison result. On-line detection of the contact resistance of the electromagnetic switch device can be realized, and on the basis, judgment of the electricity storage state can be realized, so that the working safety and reliability of equipment are improved.

A magnetic switch can be configured to have or provide a variable, user-selectable radial flux pattern. In an example, the switch comprises a magnetized outer structure and a magnetized inner structure provided at least partially inside of the magnetized outer structure. In an example, at least one of the magnetized inner and outer structures is rotatable relative to the other one of the magnetized inner and outer structures about an axis of rotation that is common to the magnetized outer structure and magnetized inner structure. The radial flux pattern can extend away from the common axis of rotation and can vary in strength according to a relative position of the magnetized inner and outer structures. In other examples, the switch can comprise multiple layers of magnetized structures.

The invention discloses a large hydro-generator full-condition field loss protection method and system, and relates to the technical field of power system relay protection, and the method comprises the steps: collecting the generator end voltage and the generator end current of a hydro-generator, collecting the bus voltage, and calculating the reactive power of the hydro-generator according to the generator end voltage and the generator end current; acquiring the node position of the field suppression switch, and judging whether the node position of the field suppression switch is abnormal or not based on the jump position of the field suppression switch, the generator terminal voltage and the reactive power of the hydro-generator; calculating a generator end current sudden increment of the hydro-generator according to the acquisition step length, and judging whether the hydro-generator has an excitation loss fault or not according to a fixed logic based on the reactive power of the hydro-generator, the generator end current sudden increment and a field suppression switch jump position with the assistance of a negative sequence voltage, a generator end voltage and a bus voltage; and if the field loss fault has occurred, executing a corresponding field loss protection action. According to the method, the phenomenon that impedance criteria are used for protecting inaction under light-load and no-load working conditions can be avoided, and the possibility of protection misoperation is reduced.

According to the megawatt-level half-cycle power generator based on the magnetic pulse compression system, by designing the constant-current magnetic switch reset circuit and the PID voltage stabilization charging technology, the pulse jitter characteristic within 10 ns can be achieved on the premise that megawatt-level power is output, the control precision is greatly improved, and stable output of high-power pulses is achieved. The problem that pulse generated by a traditional magnetic pulse compression amplifier is large in delay jitter is solved, high-precision output of megawatt-level pulses can be achieved, the high-precision magnetic pulse compression amplifier can be applied to a high-power transmitter needing to accurately control pulse output time, the high switching frequency and high switching efficiency of an MOS tube and the pulse compression characteristic of a magnetic switch are combined, and the high-precision magnetic pulse compression amplifier is achieved. The magnetic pulse power source has the advantages of high output power and high efficiency, improves the amplitude and phase stability of the output pulse compared with the traditional magnetic pulse power source, and expands the application scene and platform.

The application discloses a kind of excitation control circuit with multiple de-excitation loop for aviation three-stage power generation system, including: resonant de-excitation capacitor C2, de-excitation switch S1, de-excitation switch S2, anti-reverse diode D1, freewheeling diode D2, freewheeling diode D3, transient voltage suppression diode D4, voltage regulating MOS tube Q1, voltage regulating MOS tube Q2, de-excitation resistor R1 and excitation winding L;Wherein, the positive terminal of DC power supply DC+ is connected to the anode of anti-reverse diode D1, the cathode of anti-reverse diode D1 is sequentially connected to the negative terminal of DC power supply DC- by de-excitation switch S1 and resonant de-excitation capacitor C2;The cathode of anti-reverse diode D1 is respectively connected to the drain of voltage regulating MOS tube Q1, the negative electrode of freewheeling diode D3 and one end of de-excitation switch S2, the source of voltage regulating MOS tube Q1 is respectively connected to the positive electrode F+ of excitation winding L, the negative electrode of freewheeling diode D2;The anode of freewheeling diode D3 is respectively connected to the negative electrode F- of excitation winding L, the drain of voltage regulating MOS tube Q2 and the negative electrode of transient voltage suppression diode D4, the other end of de-excitation switch S2 is respectively connected to the positive electrode of transient voltage suppression diode D4 and one end of de-excitation resistor R1;The anode of freewheeling diode D2, the source of voltage regulating MOS tube Q2 and the other end of de-excitation resistor R1 are respectively connected to the negative terminal of DC power supply DC-.The technical scheme of the application solves the problem that the freewheeling diode added between excitation voltages in the existing excitation circuit cannot consume the energy of magnetic field, and the de-excitation speed is slow.

The invention provides a high-performance integrated electric actuator, and belongs to the technical field of automatic control. The motor drives the ball screw assembly to rotate through the transmission mechanism. The ball screw assembly is fixedly connected with the piston rod; the piston and the piston rod are assembled and then arranged in the main body cylinder barrel to do linear reciprocating motion; a self-lubricating structure is arranged on the inner wall of the main body cylinder barrel; a piston rod is rigidly connected with a nut of the ball screw assembly, a rod body penetrates through a guide sleeve at the front end of the body, and the front end of the piston rod is connected with a transmission load through a socket. A guide sleeve made of a thermal compensation material is arranged at the guide part of the piston rod; the magnetic switch is fixed outside the main body through a mounting groove or a screw and is aligned with the magnetic ring on the piston rod; the magnetic ring is embedded into the piston rod; and the anti-vibration supporting ring and the wear-resistant ring are arranged at the supporting part of the ball screw assembly. Stepless and multi-point positioning in a range can be realized according to working requirements, and multi-point free positioning is ensured.

The present invention relates to a solar light comprising a base body and an attachment element that can be placed on or inserted into the base body, wherein the attachment element comprises a light source and is movable relative to the base body. According to the invention, the attachment element comprises a magnetic switch, and the magnetic switch can be actuated by a magnet arranged on the base body by rotating the attachment element relative to the base body about a first axis, thereby moving the light source from an off position to an on position.

The utility model relates to the technical field of injection molding machines, in particular to a safety door lock for an injection molding machine, which comprises a control unit and a locking unit, the control unit comprises an electromagnetic switch, a control magnet and a control part, the electromagnetic switch is fixedly connected with the injection molding machine rack, the tail end of the control magnet is rotationally connected with the safety door body, the tail end of the control part is fixedly connected with the head end of the control magnet, and the control part is used for driving the control magnet to rotate, so that the control magnet is close to or away from the electromagnetic switch; the locking unit comprises a locking piece and a lock catch, the locking piece is fixedly connected with the lock catch, the lock catch is fixedly connected with the safety door, the locking piece is electrically connected with the electromagnetic switch, the electromagnetic switch is used for controlling the locking piece to fasten or loosen the lock catch, and through the design of the control unit, the safety door is prevented from being opened due to mistaken touch; and through the design of the locking unit, the safety door cannot be closed due to accidental reasons after being opened, so that the safety of maintenance personnel entering the injection molding machine is ensured.

In a first aspect, embodiments described herein relate to a diving robot system for inspecting and / or scrubbing an object (e.g., a warship) in a marine environment. In some embodiments, the robotic system includes: a housing; a plurality of adhesive engines disposed within the housing; a plurality of adhesive engines disposed within the housing; a lighting device; and an image forming apparatus. In some applications, each adhesion engine comprises: a plurality of adhesion devices constructed and arranged to secure the system to the object; a magnetic switch motor for turning on and off the adhesion device; at least one scrubbing element; and a body rotation motor for moving the scrubbing element across a surface of the object.

The utility model discloses a two-dimensional code box strip association sequence error prevention device, which belongs to the technical field of cigarette equipment manufacturing, and comprises a small box sequence code reader, a small box strip association sequence code reader, a small box strip association sequence code reader, a small box strip association sequence code reader, a small box strip association sequence code reader, a small box strip association sequence code reader and a small box strip association sequence code reader, the small box detecting and removing mechanism is connected with the packaging machine PLC through a signal line, and the packaging machine PLC controls the small box detecting and removing mechanism to execute corresponding removing operation; the small box cigarette supplement code reader is connected with the two-dimensional code association system, and the small box cigarette supplement code reader is triggered by an electromagnetic switch; the electromagnetic switch is connected with the small-box cigarette supplement device and outputs a signal line to the control end of the small-box cigarette supplement code reader; and the two-dimensional code association system is connected with the packing machine PLC through a network connection device, and is directly connected with the small box sequence code reader and the small box cigarette supplement code reader at the same time. According to the utility model, code reading information can be prevented from being covered, and normal association of the two-dimensional code of the box strip is ensured.

The utility model relates to the technical field of water quality detection, in particular to an underground water fixed-depth sampling device which is internally provided with a sampling assembly, a magnetic switch assembly and a magnetic control assembly, the magnetic switch assembly is installed at the collecting end of the sampling assembly, and the magnetic control assembly is electrically connected with the magnetic switch assembly; the sampling assembly is used for collecting an underground water sample, the magnetic switch assembly is used for opening or closing the collecting end of the sampling assembly through the magnetic change of the magnetic switch assembly, and the magnetic control assembly is used for controlling the magnetic change of the magnetic switch assembly so as to keep the closed state of the collecting end of the collecting assembly before the collecting assembly reaches a specified depth; thus, closing and opening of the collecting end of the collecting assembly are controlled through the magnetic switch assembly, so that underground water at other depths is prevented from entering the collecting assembly, only underground water at a specified depth enters the collecting assembly, external heavy auxiliary equipment is not needed, and the device is convenient to move during multi-position sampling, so that the transportation cost and the labor cost are reduced.

The utility model discloses an automatic fire extinguishing device for an expressway tunnel rescue robot, which comprises an industrial robot, a fire extinguisher and an upper computer, the fire extinguisher is fixed at the lower part of a support frame, and a quick change device is connected between the upper surface of the support frame and the tail end of the industrial robot; the quick-change device comprises a quick-change main disc and a quick-change tool disc; the quick-change main disc is fixed at the tail end of the industrial robot through a connecting flange; the quick-change tool disc is fixed on the supporting plate, and the quick-change main disc and the quick-change tool disc are connected or disconnected through a piston type steel ball locking structure; an actuating mechanism cylinder is mounted below the supporting plate and is provided with a push rod, a cylinder air inlet / outlet and a magnetic switch sensor for sensing actuating signals of the actuating mechanism cylinder; the push rod is connected with a pressing handle at the top of the fire extinguisher, and the upper computer controls the opening and closing start-stop state of the actuating mechanism air cylinder according to actuating signals, obtained by the magnetic switch sensor, of the actuating mechanism air cylinder.

An electrically driven fastener structure includes a body, a fastening unit and a wire. The body has a first assembly portion. The fastening unit has a second assembly portion corresponding to the first assembly portion. The wire is adapted to pass a current and to pass through the first assembly portion or the second portion to form a magnetic switch using the first assembly portion or the second assembly portion, so as to drive the magnetic switch based on on or off or strong or weak of the current, or to drive the magnetic switch based on on or off or strong or weak of a magnetic force.

The application relates to a power grid power supply distribution box with a closed intelligent power connection and a closed power connection method thereof, which comprises a driving part installed on a second box door, a gear cylinder arranged on the driving part, and a lifting part installed on the second box door through a guide block and connected with the gear cylinder. When the second box door is opened, a door magnetic switch automatically disconnects a circuit, thereby triggering the conduction of a tripping circuit, which makes a circuit breaker trip and cut off the power supply in the distribution box. In this way, all branch switches in the distribution box are disconnected in a certain order under the action of a step-by-step locking structure, so that safe power-off can be realized when the power is connected. The step-by-step power-off operation design can effectively avoid large-scale power cut-off and reduce the damage of equipment caused by current impact or voltage fluctuation.

The invention provides a current-sensitive resonance eliminator driven by grounding current, and belongs to the technical field of grounding protection. The current-sensitive resonance eliminator is used for being connected between a neutral point of a voltage transformer of a distribution network system and the ground, and is structurally characterized in that a high-voltage lead, a circuit board, an electromagnetic switch and a low-voltage connecting line are electrically connected in sequence from top to bottom and are arranged in an inner cavity of an insulating sheath, the low-voltage connecting wire is led out from the tail of the electromagnetic switch; the high-voltage lead is connected with a wiring terminal of a neutral point of the voltage transformer The low-voltage wire holder is sleeved at the bottom of the insulating sheath; the low-voltage connecting wire is connected with the grounding end through the low-voltage wire holder; a current-sensitive resistor is arranged in the circuit board; when the zero-sequence current of the neutral point of the system is increased suddenly, the resistance value of the current-sensitive resistor is increased suddenly to reduce the loop current; an electromagnetic coil in the electromagnetic switch is connected with a low-voltage connecting line, the electromagnetic switch is driven to be disconnected when grounding current large enough flows through the electromagnetic coil, and the normally-closed state is automatically recovered after a safe duration.

The invention discloses a retail commodity image recognition system based on a horizontal freezer, which comprises the horizontal freezer and a cloud server, and is characterized in that a left camera, a right camera and a middle camera are fixedly mounted on the left side, the right side and the middle of the interior of the horizontal freezer respectively; a left door magnetic switch and a right door magnetic switch are fixedly arranged on the inner side of a left cabinet door and the inner side of a right cabinet door of the horizontal freezer respectively, a main control module, a communication module and a power module are arranged in a cabin of the horizontal freezer, and the main control module controls the three cameras to collect images according to a preset period and sends the images to the cloud server. The cloud server identifies the category, the number and the area of the commodities in the image, and judges the inventory condition; the door magnetic switch detects the opening and closing state of the cabinet door, and if the cabinet door is opened, a video is recorded and sent to the cloud; and the cloud server analyzes the tracks and categories of the hands and the objects in the video and judges the content of the video. According to the invention, the problem of a camera triggering mechanism is solved, the identification accuracy of the commodity image is improved, and the cost is reduced.

An electromagnetic-actuator (EA) including a coil-element (CE) having a coil-core (CC) / coil arranged about the CC-circumference. The CC has a symmetrical first-region (FR) having an axis-of-symmetry (AOS), the CC being surrounded by the coil, and a movable-magnetic-armature-body (MM AB) as a movable-actuator-element (MAE) interacts with the CE to produce an AB activation-movement, and is supported in the actuator by a bearing-device (BD) and movable from a first / second-position by activating the CE. The BD is radially-offset to the CC AOS, and the AB extends from the BD radially over the CC from a first / second-side of the CC, which has a second-region (SR) extending radially beyond the FR and is on second-side (SS) of the CC between the coil / AB in the direction of AOS such that an air-gap between CC / AB in direction of the AOS is smaller on the SS of the CC than on first-side when the AB is in first-position.

The invention belongs to the field of aircraft missile pylon ejection system control, and particularly relates to a switch array pilot aircraft missile pylon ejection valve and a control method. The ejection valve comprises a flow valve and a pilot stage for controlling the flow valve, and the pilot stage forms a hydraulic half-bridge through a plurality of electromagnetic switch valves connected in parallel, a fixed damping hole and a switch type damping valve controlled by pressure difference. During working, when the electromagnetic switch valve is fully closed, the switch type damping valve is normally opened, and the flow valve is closed; any electromagnetic switch valve is opened, the switch type damping valve is closed under the action of differential pressure, and the flow valve is rapidly opened to supply oil. The redundant design that the multiple electromagnetic switch valves are connected in parallel is adopted, a traditional single pilot electromagnetic valve low in reliability is replaced, normal work under the condition that the single electromagnetic switch valve breaks down can be achieved, and the overall reliability of the system is remarkably improved. During ejection work, the drift diameter of the switch type damping valve is decreased under the action of differential pressure, it is guaranteed that a valve element of the flow valve is rapidly opened, and the response speed of the ejection valve is increased.

This invention relates to an automatic positioning and transfer system and method for a pulsed production line, belonging to the field of automated assembly lines for aerospace liquid engines. The automatic positioning and transfer system includes a control system, a conveying mechanism, a stop mechanism, a near-position sensor, a position sensor, a separation mechanism, a dedicated carrier, and a positioning and rotating mechanism. Based on the motion signals received by the control system from various magnetic switches, photoelectric sensors, etc., it further drives the conveying mechanism, detection and blocking mechanism, separation mechanism, positioning and rotating mechanism, and other actuators to achieve automatic workpiece positioning and transfer. It meets the construction requirements of pulsed, rhythmic production lines for liquid rocket engines and effectively solves the problems of low positioning accuracy and inability to achieve fully automated transfer found in previously disclosed automatic positioning solutions.

An improved structure of oil control pump aroma device primarily comprises: an outer shell main body, a universal adapter, a control oil pump, a misting oil tank, a control circuit, and a fan. The universal adapter serves as a magnetic movable joint for locking commercially available essential oil bottles, while a magnetic oil supply interface is recessed on the top of the outer shell main body to facilitate assembly and removal of the universal adapter with essential oil bottles. During operation, the control oil pump is controlled by an electromagnetic switch to inject essential oil into the misting oil tank, where it is atomized by an ultrasonic atomizer, and finally diffused into the external air by a fan. The overall effective design enables users to select their favorite fragrance according to their preferences, thereby achieving practical purposes such as relieving tension and improving air quality.

The utility model provides a visual detection sensor for a glass substrate, which comprises a fixed seat and a mounting plate, wherein a mounting groove is formed in the middle of the mounting plate, the two sides of the mounting plate are symmetrically designed to be of an L-shaped structure, and the mounting plate is fixed on a glass substrate conveying mechanism through a first bolt; the top of the sensing element is provided with a contact wheel in a rolling manner and protrudes out of the top of the fixed seat, and the sensing element is arranged in the mounting groove of the fixed seat in a swinging manner through a fixed pin; the inductor comprises a shell, a magnetic switch, a resistor chip and an indicator light, and the magnetic switch, the resistor chip and the indicator light are all arranged in the shell; the shell is fixed to the lower portion of the installation groove and located under the sensing element, and one end of the shell is fixed to the fixing base through a second bolt. The magnetic switch and the resistor chip are respectively connected with the indicating lamp. The visual detection sensor provided by the utility model is simple in structure, can find faults in time, can be replaced in time, avoids downtime, reduces productivity loss, and saves manpower during replacement.

The utility model discloses a permanent magnet switch over-travel adjusting structure and device. The permanent magnet switch over-travel adjusting structure comprises a permanent magnet switch body, an over-travel adjusting piece and an over-travel locking assembly. The permanent magnet switch main body comprises a contact spring, an insulating pull rod, a screw rod and an iron core, the contact spring is installed in the insulating pull rod, the lower end of the insulating pull rod is provided with a first inner threaded hole matched with the screw rod, the lower end of the insulating pull rod is connected with the upper end of the screw rod through the first inner threaded hole, and the over-travel adjusting piece is provided with an inner threaded through hole matched with the screw rod. The lower end of the screw rod sequentially penetrates through the internal thread through hole and the iron core and is in threaded connection with the over-travel locking assembly; the lower end face of the over-travel adjusting piece and the upper end face of the over-travel locking assembly abut against the iron core, the scientific principle that the contact spring and the over-travel adjusting piece are spatially separated can be achieved, and therefore the over-travel adjusting device can be directly applied to a high-speed switch under the condition that no part needs to be additionally arranged, and the over-travel adjusting range is effectively enlarged.