543 results about "Motor protection" patented technology

The invention discloses a sampling implementation method and system suitable for motor protection quick response, belongs to the technical field of motor protection, and can increase the sampling frequency and improve the quick response of motor fault protection. Comprising the steps that motor phase current and bus voltage are collected, after anti-aliasing filtering is conducted, parallel sampling is conducted through a main ADC module and a redundant ADC module which are independently configured, and the following operations are synchronously executed based on a double-buffer-area framework: in a first buffer area, a compensation coefficient updating period is dynamically adjusted, and convergence is restrained; in the second buffer area, generating a voltage gradient prediction sequence, and compensating data abrupt change; when the harmonic frequency spectrum amplitude or the voltage gradient prediction sequence exceeds the limit, an oversampling mode is triggered, a redundant ADC module is allocated to load a multi-order digital filter, and an independent hardware acceleration unit is started to process harmonic compensation and gradient prediction in parallel; and generating a dynamic safety envelope, and if the gradient extreme value in the preset continuous window breaks through the safety envelope, generating an overvoltage fault signal.

The invention relates to a self-moving device and a motion control method and system thereof, in particular to a motion control method and system suitable for a self-moving device of a double-wheel independent driving structure, the self-moving device and a medium, and aims to solve the problem that when the self-moving device of the double-wheel independent driving structure runs in a complex environment, the motion of the self-moving device cannot be controlled. The technical problem that a finer control strategy is needed in the face of core challenges such as violent load change, strong motor protection requirement and high motion stability requirement is solved. According to the motion control method of the self-moving equipment, the current rotating speeds and current currents of motors on the two sides are monitored in real time, the rotating speeds of the motors on the two sides are dynamically adjusted, the maximum output power is limited, constant acceleration smooth processing is adopted, the expected rotating speed in unit time is calculated, and it is ensured that the speed change is stable; and dynamically coordinating the rotating speeds of the motors on the two sides by utilizing a speed ratio adjusting strategy to keep a motion posture.

The invention relates to an integrated protection magnetic suspension motor and a magnetic suspension vacuum pump, and belongs to the technical field of magnetic suspension motor protection. In the magnetic suspension motor, a front backboard is arranged at the front end of a casing, a tail end cover and a tail end cover are arranged at the rear end of the casing, the casing, the front backboard, the tail end cover and the tail end cover form an installation cavity, and a front protection bearing seat, a front radial magnetic bearing seat, a rear protection bearing seat and a rear radial magnetic bearing seat are installed in the installation cavity. And a seam and a connecting surface between the bearing seats are prevented from being exposed outside. Only one air inlet and one air outlet are formed in the machine shell, leakage points are reduced through the design of the single air inlet and the single air outlet, and protection above IP54 is achieved. Meanwhile, heat dissipation and protection of the motor are considered at the same time through the design.

The utility model discloses a performance testing device for bearing operation, which belongs to the technical field of bearing performance testing and comprises a main body, the top end of the main body is fixedly connected with a motor protection cover, a servo motor is fixedly connected in the motor protection cover, and the output end of the servo motor is fixedly connected with a rotating column. According to the performance testing device for bearing operation, a first electric push rod is started, the first electric push rod shrinks and pulls a rotating block, at the moment, the rotating block drives an extrusion block to rotate around a pin in the middle, the extrusion block rotates to enable two sides to extrude a moving block, and the moving block moves towards two sides; the movable block moves to drive the clamping ring to expand, at the moment, the bearing can be put in, then the first electric push rod is recovered, at the moment, the reset spring drives the movable block and the clamping ring to reset, the put-in bearing is clamped, the bearing is prevented from loosening, it is guaranteed that the bearing is more stable in the rotation test, and installation test of the bearing is more convenient.

The invention discloses a lithium battery over-temperature power-off protection device, and relates to the technical field of battery protection, the lithium battery over-temperature power-off protection device comprises a protection shell and a storage battery, the storage battery is installed on the inner side of the protection shell, a relay and a temperature sensor are installed on the upper portion of the protection shell, and a sealing protection assembly for the storage battery is arranged on the protection shell; the sealing protection assembly comprises a servo motor installed on the side face of the protection shell, a movable plate, a baffle, a concentric-square-shaped plate and a plurality of fan blades rotationally connected with the side face of the protection shell, the movable plate, the baffle and the concentric-square-shaped plate are arranged on the inner side of the protection shell in a sliding mode, and a first threaded rod is installed at the output end of the servo motor. And meanwhile, air in the protective shell is sucked away, so that a fire source generated by a storage battery fire disaster and oxygen in the external environment can be effectively isolated through cooperative work, and the spreading speed of the fire behavior is slowed down.

The invention relates to the technical field of motor protection, in particular to a protection device for an electric tricycle motor, which comprises a motor body, a transmission mechanism mounted on the motor body, a protection mechanism mounted on the transmission mechanism, a cleaning mechanism mounted on the protection mechanism, a connecting mechanism mounted on the motor body, and a locking mechanism mounted on the motor body. A sealing mechanism is mounted on the connecting mechanism; the bottom of the motor body is shielded and protected through the protection mechanism, sundries on the protection mechanism are scraped through the cleaning mechanism, corrosion of the motor body is reduced, heat dissipation is facilitated, the motor body and the transmission mechanism are quickly disassembled and assembled through matched installation of the connecting mechanism and the locking mechanism, follow-up maintenance is facilitated, and the sealing mechanism is installed, so that the sealing performance of the motor is improved. And the sealing mechanism is driven by the connecting mechanism, so that the sealing mechanism is tightly sealed.

The invention provides a motor protection circuit, a motor power supply system and electronic equipment, and belongs to the technical field of electronics. The motor protection circuit comprises an on-off control circuit; the on-off control circuit is connected with a three-phase inverter and a motor, and is used for disconnecting at least two phase current output ends of the three-phase inverter and the motor under the condition that the three-phase inverter has a control fault, so that an electrical connection loop does not exist between the three-phase inverter and the motor. The back electromotive force current generated by the motor due to the back electromotive force is effectively prevented from recharging through the three-phase inverter, and the problem that the three-phase inverter, the battery pack and other devices connected with the motor are damaged due to the back electromotive force current is solved.

The invention discloses a circuit breaker energy storage motor general protection method and system, and relates to the technical field of circuit breaker energy storage motor protection, and the method comprises the steps: collecting the real-time current data of an energy storage motor, and carrying out the preprocessing of the collected data; analyzing current data in real time, performing overcurrent fault judgment, and setting and adjusting overtime protection time through a dynamic threshold adjustment algorithm; through real-time monitoring of current and time data, an emergency stop instruction is executed immediately after a fault is identified, and a locking instruction is triggered after emergency stop. According to the method, a reliable data basis is provided for subsequent fault judgment, so that the accuracy and reliability of the whole protection system are improved, protection parameters are automatically adjusted according to the actual operation condition of the motor, safe operation of the motor under the complex working condition is ensured, the fault response time is greatly shortened, and the working efficiency is improved. Reset operation and all-directional self-inspection after troubleshooting ensure that the motor is in a safe working state before running recovery, and the safety and stability of the system are further improved.

The utility model relates to a clutch mechanism with motor protection, which comprises a motor and a safety component, and an output shaft is arranged on the motor. The safety assembly comprises a connecting sleeve, an output section and an elastic piece, the output shaft is connected with the connecting sleeve, and the output section can axially move relative to the connecting sleeve; the connecting sleeve is provided with a first face, the output section is provided with a second face, the first face is matched with the second face, and the first face is an inclined face or an arc face. The first face is coupled with the second face. The clutch mechanism with the motor protection function has the following advantages that after the limited torque is exceeded, the axial component force borne by the second face is larger than the pressure of the elastic piece, so that the elastic piece is compressed, the output section and the connecting sleeve can be automatically disengaged, the output shaft can be prevented from being broken, and the use safety of the motor is improved.

The utility model discloses an anti-immersion American transformer station comprising a box station, the two ends of the front side of the box station are rotatably connected with station doors, the outer side of the box station is fixedly provided with a waterproof plate, the upper part of one side of the box station is fixedly provided with a motor protection cover, the front side of the box station is fixedly provided with a rubber frame, and the surface of the rubber frame is provided with a clamping groove. Magnet pieces are evenly arranged on the surface of a clamping groove in the surface of the rubber frame in an adhesive mode, a rubber clamping ring is fixed to the surface of the station door, and a metal piece is arranged in the rubber clamping ring. According to the anti-immersion American transformer substation, the anti-seepage effect of the American transformer substation can be improved through clamping and sealing of the L-shaped waterproof plates at the heat dissipation holes in the surface of the box station, the rubber frame in the box station and the rubber clamping ring on the surface of the station door.

The invention relates to the technical field of education and practical training, in particular to a low-voltage electrician special operation practical training examination system. A power supply module; the operation module is used for allowing examinees to complete various practical operation items; the data acquisition module is used for acquiring sequence, position and correctness data of wiring of examinees and analyzing motor steering, phase sequence and open-phase and short-circuit fault states; the motor protection module is connected with the main control module, and is used for monitoring the running state of the motor, performing overload, short circuit, undervoltage, overvoltage and open-phase protection, and executing a protection action of cutting off a power supply when an abnormality is monitored; an automatic scoring module; a remote communication module; an identity recognition module; and the evaluation system module is used for verifying the identity recognition information of the examinees and automatically extracting and displaying examination questions after the identity verification is completed. According to the application, full-process module collaboration is realized, and the effects of automatic management, data acquisition and analysis of motor practical operation evaluation are realized.

The invention relates to the technical field of chef machine motor protection, in particular to a chef machine motor overheating protection method and system oriented to a high-temperature environment, and the method comprises the steps: firstly collecting chef machine monitoring data, then obtaining first temperature prediction data according to a preset prediction model, and obtaining second temperature prediction data based on a preset thermodynamic model; and then combining the first temperature prediction data and the second temperature prediction data to adjust the initial overheating protection threshold value to obtain a target overheating protection threshold value, and finally performing predictive protection adjustment on the chef machine according to the target overheating protection threshold value. Compared with the prior art, the method has the advantages that the overheating protection threshold is dynamically adjusted according to the results of the preset prediction model and the preset thermodynamic model so as to reduce misjudgment, and meanwhile, the situation of shutdown waiting is avoided by adopting a predictive protection adjustment mode; the problems of low accuracy and low efficiency of a protection mode based on a fixed threshold in the prior art are solved.

The invention relates to the technical field of motor protection, and discloses a high-efficiency motor operation safety control method, which comprises the following steps: S1, based on an embedded sensor, adopting a multi-source data fusion algorithm, and through Kalman filtering and normalization processing, collecting and preprocessing operation data of a motor in real time, generating preprocessed multi-dimensional sensor data, and sending the preprocessed multi-dimensional sensor data to a server; and S2, on the basis of the preprocessed multi-dimensional sensor data, a physical model driving method is adopted, and a digital twin model of a motor is updated through a real-time simulation engine, so that a current motor state is mapped, and high-fidelity digital twin state mapping is generated. By collecting multi-source sensor data in real time and applying Kalman filtering and normalization processing, the data quality and consistency are remarkably improved, and a reliable foundation is laid for subsequent analysis; high-fidelity digital twinning state mapping is constructed based on physical model driving and a real-time simulation engine, dynamic and accurate representation of multiple physical field states in the motor is realized, and the state sensing depth is enhanced.

The invention discloses a protection type new energy motor, and relates to the technical field of new energy motors, the protection type new energy motor comprises a base, the top of the base is fixedly connected with a motor fixing seat, the top of the motor fixing seat is fixedly connected with a new energy motor, and the motor fixing seat comprises a motor fixing frame. A motor reinforcing protection mechanism is arranged on the inner wall of the motor fixing frame, and through the arrangement of the motor fixing seat, the motor fixing frame and the motor reinforcing protection mechanism, sewage can be effectively prevented from being splashed into the motor, so that water is prevented from entering the motor protection cover, and normal work and the service life of the motor are ensured; a reinforcing structure is arranged at the joint of the output end of the new energy motor and other new energy accessories, the stability of the joint is enhanced, bolts of the protective cover are prevented from loosening and being damaged, normal work of the new energy motor is further guaranteed, and specifically, when the new energy motor is installed, the base is fixed to the bottom of a vehicle through the bolts, and the motor is arranged on the top of the base.

The invention belongs to the field of motors, and relates to a motor protection method, system and equipment based on a temperature rise rate, and a medium. The method comprises the following steps: acquiring the temperature of a motor shaft end and the maximum allowable temperature; and calculating the temperature rise rate of the shaft end of the motor, if the temperature rise rate is greater than zero when the temperature reaches the highest allowable temperature, the motor is powered off and stopped, otherwise, the motor continuously operates. According to the method, the temperature of the motor shaft end is acquired in real time, the temperature rise rate of the motor shaft end is calculated, and the motor is powered off and stopped before the temperature of the motor shaft end reaches the maximum allowable temperature, so that advanced detection and stopping of the motor shaft end before the temperature of the motor shaft end rises to the maximum allowable temperature can be ensured; the problems that advanced detection and shutdown and overtemperature lagging shutdown cannot be realized by adopting a high-temperature limit value interlocking shutdown mode, so that motor coil insulation is burnt due to high-temperature failure when a control unit issues an overtemperature shutdown instruction are solved.

The utility model discloses a blending device for preparing a precise electronic component cleaning agent. The blending device comprises a stable base, a cleaning agent preparation bin, a transmission motor protection shell and a pressure adjusting pump, a controller and a cleaning agent preparation bin are fixedly installed at the top of the stable base, a transmission motor is fixedly installed at the top of the other side of the cleaning agent preparation bin through a transmission motor protection shell, the output end of the transmission motor is rotationally connected with a shaft linkage rod, and a pressure adjusting pump is fixedly installed at the bottom of the cleaning agent preparation bin. And an electromagnetic valve is fixedly mounted on one side of the pressure adjusting pump. According to the cleaning agent conveying device, an operator can know the conveying condition of a cleaning agent in real time so as to adjust and control the cleaning agent, so that accurate conveying and using of the cleaning agent are ensured, and the production efficiency and quality are improved.

The invention relates to a new energy automobile motor protection device, and belongs to the technical field of motor protection. Comprising a shell, a motor body is installed in the shell, end covers are installed on the two sides of the motor body, a sealing protection assembly is arranged at the shaft end of the motor body, an arc-shaped supporting table is installed at the bottom of the motor, supporting rods are fixedly connected to the bottom of the arc-shaped supporting table, and a crumple anti-collision assembly is arranged between every two adjacent supporting rods. An air bag is installed at the bottom of the arc-shaped supporting table, a triggering assembly is arranged in the crumple anti-collision assembly, and a pressure maintaining assembly is arranged above the crumple anti-collision assembly. The sealing protection assembly is arranged between the end cover and the driving shaft, and the sealing protection assembly is used for realizing self-adaptive fitting depending on the pressure change of gas in the motor body. The problems that motor protection sealing reliability on an existing new energy electric vehicle is insufficient, the anti-collision capacity is limited, and protection continuity is poor can be effectively solved.

The utility model relates to the technical field of motors, and discloses a star-shaped winding framework and a motor protection structure, which comprise a wire passing framework body arranged on the wire outlet side of a stator core and a protection structure coated on the outer side of the wire passing framework body, the wire-passing skeleton body comprises a plurality of wire-passing protrusions arranged on the end face, not making contact with the stator iron core, of the wire-passing skeleton body, binding holes formed in the side face of the wire-passing skeleton body, and skirt edges arranged on the end face, making contact with the stator iron core, of the wire-passing skeleton body. The protective structure comprises a protective cover and a terminal sheath which cover the outer side of the wire passing framework body; wherein the terminal sheath is placed on the upper end face of the protective cover to form an integrated structure. The star-shaped winding framework and the protection structure can further enhance the insulation performance of the motor and reduce the risk of motor failure.

The utility model discloses an outdoor heat dissipation breathable rainproof device, relates to the field of outdoor motor protection equipment, and can solve the problems that an existing motor heat dissipation waterproof device is poor in heat circulation, not ideal in heat dissipation effect, poor in waterproof performance and prone to being invaded by rainwater. The drainage groove and the multiple splash-proof structures are arranged in the splash-proof groove of the protection component, and meanwhile the first heat dissipation holes are formed in the splash-proof structures, so that air circulation is effectively enhanced. The design of the drainage groove ensures that water flow can be drained in time, the influence of accumulated water on heat dissipation is avoided, and therefore the heat dissipation performance is improved, the protective cover body adopts the structural design that an inclined frame body and a rectangular frame body are combined, an air circulation channel is further optimized, the heat dissipation efficiency is improved, the flood prevention inner weir is 1 mm higher than second heat dissipation holes, and the heat dissipation efficiency is improved. And the waterproofness is further enhanced. The design of the inner weir effectively prevents rainwater from entering the heat dissipation holes, and ensures that the equipment is not influenced by the rainwater.

The invention discloses a motor drive control system and method for automation equipment, and relates to the technical field of motors. The system comprises a data acquisition module, a diagnosis analysis module and a protection module, and the data acquisition module is convenient for real-time acquisition of data parameters of rotation speed, current, voltage, temperature, vibration amplitude and noise sound waves in the operation process of the motor, so that multi-dimensional monitoring of the motor is realized; the diagnosis and analysis module is convenient to diagnose and analyze the collected data, the purpose of comprehensively analyzing and diagnosing the running state of the motor is achieved, the control precision of the motor is improved, and the purposes of protecting the motor in real time and early warning the fault are achieved by combining the protection module to carry out coping treatment and early warning on the fault after diagnosis and analysis.

This invention discloses an outdoor air pollutant treatment device, belonging to the field of air pollutant treatment technology. It includes a mounting frame, on the upper side of which multiple motor protective shells are fixedly mounted. A power motor is fixedly connected inside each motor protective shell, and multiple axial flow fans are fixedly connected to the outer side of the output shaft of each power motor. A fixed frame is located on the outer side of the motor protective shells, and a filter element is fixedly mounted within the fixed frame. A cleaning assembly for the filter element is also installed within the fixed frame, and the cleaning assembly includes a positioning plate fixedly mounted on the outer side of the filter element. During the air pollutant treatment process, the cleaning box and cleaning plate can clean the pollutants accumulated on the outer side of the filter element, improving the filter element's service life. Furthermore, during this process, the cleaning plate moves up and down relative to the cleaning box, allowing for better cleaning of the pollutants accumulated on the outer side of the filter element.

The invention discloses a high-protection unmanned aerial vehicle motor, relates to the technical field of unmanned aerial vehicle motors, and solves the problems that in order to achieve heat dissipation, most of existing unmanned aerial vehicle outer rotor motors are not subjected to protection treatment, or protection measures are additionally taken, a plurality of connecting structures are additionally arranged, and the motor is abnormal due to damage of the connecting structures. A high-protection unmanned aerial vehicle motor comprises a rotor, a plurality of heat dissipation fins are fixed to the outer surface of the rotor in an annular array mode, a flow guide groove is formed between every two adjacent heat dissipation fins, a center shaft is installed in the middle of the rotor in a penetrating mode, and a nut is detachably installed at the bottom end of the center shaft; and a magnet mounting column is detachably mounted at the bottom end of the nut. The ball bearings and the heat-conducting annular strips which are distributed in an annular array mode are arranged on the upper surface and the side face of the upper end cover correspondingly and used for guaranteeing flowing of airflow in the motor, so that rapid dissipation of heat in the motor is achieved while motor protection is guaranteed, and faults caused by internal overheating when the motor runs are avoided.

This invention provides a mobile inspection platform and its mobility method for non-coal mines, relating to the field of safety inspection technology in non-coal mines. The platform incorporates image recognition and gas concentration analysis algorithms, automatically identifying equipment status, personnel activity, and gas anomalies, and predicting risks, significantly improving safety and efficiency. It adopts a top-mounted, side-mounted rail installation method, saving ground space, avoiding collisions with personnel and equipment, and adapting to narrow tunnels; the rail uses high-strength, lightweight materials, ensuring high stability. The platform supports real-time monitoring of multiple parameters, can be expanded with various sensors, and combines remote control and timed tasks to achieve unattended, efficient inspections. The modular design facilitates maintenance and is equipped with PID control, collision sensing, automatic return, and multiple motor protections to ensure stable and safe operation. Encrypted data transmission, local storage, and remote upload are combined to automatically generate multi-format inspection reports, assisting in intelligent mine decision-making.

This application discloses a marine generator winding protection device, belonging to the technical field of generator protection devices. The protection device includes a base and a generator installed on the base. A fixing frame is provided at the lower end of the base, a lower housing is provided at the upper end of the fixing frame, and an upper housing is provided at the upper end of the lower housing. A moisture-proof mechanism is provided inside the upper housing, and a partition frame is installed inside the upper housing. Several condensation plates are evenly distributed at the upper end of the partition frame. The condensation plates are fixed to the partition frame by a support base. A guide duct runs through the partition frame. External air enters from the air inlet pipe. When it flows through the guide duct, the humid air comes into contact with the condensation plates and condenses. The water vapor is discharged along the guide groove. Dry air circulates through the exhaust pipe. The condensation plates condense water vapor through refrigeration or temperature difference effect. The guide groove drains water quickly, and the desiccant in the storage tank adsorbs residual water vapor, forming a triple protection of condensation-drainage-drying, which effectively reduces the humidity in the generator room.

The utility model discloses an integrated tubular motor protection structure, which comprises a first protection shell, a second protection shell is arranged at the bottom of the first protection shell, a connecting mechanism is arranged between the first protection shell and the second protection shell, and fixing mechanisms are arranged on the surfaces of the first protection shell and the second protection shell. Each of the first protective shell and the second protective shell comprises a base layer, a reinforcing layer, an insulating layer and a functional layer. The beneficial effects of the utility model are that the first protection shell and the second protection shell can be installed on the main body of the tubular motor through the cooperation of the fixing bolts and the fixing holes, and the main body of the tubular motor is provided with the first limiting plate and the second limiting plate which are used in cooperation with the first limiting groove and the second limiting groove. And the first limiting groove and the second limiting groove are matched with the first limiting plate and the second limiting plate, so that the first protection shell and the second protection shell can be limited, and the stability of the first protection shell and the second protection shell after installation is improved.

The utility model relates to the field of motor testing, in particular to a dry area motor protection testing structure which comprises a dry area motor body, the dry area motor body is provided with a shell, the shell is provided with three first positioning holes, the three first positioning holes all penetrate through the shell, and the three first positioning holes are arranged in the shell. The three first positioning holes are triangularly arranged; the dry area motor comprises a dry area motor body and a plate body assembly, the dry area motor body is arranged in the plate body assembly, the plate body assembly comprises a cover plate, and one side of the dry area motor body is fixed on the cover plate. According to the utility model, the advantages of convenient use, simple structure and firm motor installation can be realized by effectively utilizing the structural configuration of the motor.

The present application relates to the technical field of industrial equipment control, and in particular to a motion control card and control system with a motor protection function. A motion control card with a motor protection function includes an overvoltage detection module, a control module, and a motor discharge module; the control module is connected to the output end of the overvoltage detection module, and is used to judge the first level signal output by the overvoltage detection module and generate a control signal; the motor discharge module discharges the motor voltage according to the control signal, or turns off the discharge of the motor voltage. When the motor is in an overvoltage state, the motor discharge mode is started to reduce the voltage accumulation inside the motor and release the reverse electromotive force generated by the motor brake. The use of this application can solve the problem of reverse electromotive force generated by the motor brake and improve the effect of motor protection.

The invention relates to an off-road vehicle chassis structure and an off-road vehicle, and belongs to the technical field of automobile chassis structures. The bottom protection plate assembly comprises a cabin protection plate, a battery pack protection plate, an oil tank protection plate and a motor protection plate which are detachably arranged on the chassis assembly, are sequentially distributed in the length direction of the chassis assembly and are not overlapped with one another; the engine room protection plate, the battery pack protection plate, the oil tank protection plate and the motor protection plate are each provided with a longitudinal groove penetrating in the length direction of the chassis, and the engine room protection plate is provided with an oblique groove which is communicated with the longitudinal groove in the engine room protection plate and obliquely extends backwards to the outer side. The cabin protection plate, the battery pack protection plate, the oil tank protection plate and the motor protection plate are sequentially distributed in the length direction of the chassis assembly and installed on the chassis assembly in a non-overlapping mode, and the protection plates can be independently disassembled, assembled and replaced and do not affect one another; a user can flexibly select the protection plates with different thicknesses or protection levels for assembly or replacement according to actual protection requirements, and efficient customized configuration is achieved.

The utility model discloses an underwater probe transmission sealing structure, and belongs to the technical field of geophysical prospecting logging detection. The structure comprises a motor protection shell, a transmission protection shell and a probe protection shell which are coaxially arranged, a motor is arranged in the motor protection shell, the transmission protection shell is located between the motor protection shell and the probe protection shell, one end of the transmission protection shell is connected with the motor protection shell, a transmission mechanism is arranged in the transmission protection shell, and the other end of the transmission protection shell is connected with the probe protection shell. A sealing assembly is arranged on the transmission mechanism and located on the inner side of the transmission protection shell in a sleeved mode, the sealing assembly is arranged close to the probe protection shell, and the probe protection shell is connected with an output shaft of the motor through the transmission mechanism. The sealing assembly is sleeved on the inner side of the transmission protection shell on the transmission mechanism, and one end, close to the probe protection shell, of the transmission protection shell is sealed through the sealing assembly, so that water is prevented from entering the motor protection shell, the motor is further prevented from wading into water, and the motor is protected.

The utility model relates to the technical field of gear motors, and discloses a gear motor protection device which comprises a gear motor body, a connecting shaft is installed at the front end of the gear motor body, a sliding groove is formed in the surface of the connecting shaft, and a fixing plate is fixedly connected into the sliding groove. One end of the fixing plate is fixedly connected with a limiting rod, the tail end of the limiting rod is fixedly connected with the interior of the sliding groove, the surface of the limiting rod is slidably connected with a sliding block, the interior of the sliding groove is rotatably connected with an arc-shaped plate, and the top end of the sliding block is rotatably connected with a connecting plate. According to the gear motor protection device, automatic heat dissipation can be carried out when the gear motor main body runs, so that the gear motor main body can be kept at a moderate temperature when running, the aging of an insulating material, the copper loss of a winding and the damage of parts such as a bearing are reduced, and the effective protection of the gear motor main body is realized.