58results about How to "Reduce hidden dangers" patented technology

The invention discloses an underwater pile foundation detection method, system and device and a storage medium, relates to the technical field of pile foundation detection, and solves the technical problems that information of multiple key parameters cannot be effectively integrated, and a scientific and reasonable comprehensive evaluation method for accurately judging the overall state of a pile foundation is lacked. According to the method, multi-aspect parameters are comprehensively obtained and deeply analyzed, a complete pile foundation quality evaluation system is constructed, and after abnormal points are accurately positioned in a propagation velocity analysis link, the amplitude abrupt change, adjacent point difference discreteness and the abnormal area length proportion are synthesized by means of calculation and assignment of the velocity difference and the abnormal area length proportion and amplitude analysis, so that the quality of the pile foundation is evaluated. According to the method, the amplitude anomaly characteristics and range of a pile body are detected in an all-around mode, the local non-uniform defect detection precision is remarkably improved, in the frequency analysis process, frequency locking anomaly points are sent through comparison, regional analysis assignment is combined, the influence of the frequency locking anomaly points on the pile foundation quality is fully considered, and finally the pile foundation state value is calculated and matched with the state interval to generate information.

The invention discloses a bolt and pin defect detection method based on image features, and belongs to the technical field of image recognition, and the method comprises the steps: carrying out the preprocessing of a bolt and pin image photographed during the historical inspection of an unmanned plane through super-resolution reconstruction, and obtaining a training image set and a test image set; based on an SPD convolution module, improving YOLOV8 and combining with the training image set to construct and train a bolt pin detection model, and then inputting a test image set into the trained bolt pin detection model for testing to obtain a qualified bolt pin detection model; and finally, inputting a bolt and pin image shot during real-time inspection of the unmanned aerial vehicle into the qualified bolt and pin detection model for detection to obtain a detection result. The problem that in the prior art, the detection accuracy is poor in the bolt and pin image detection process is solved.

The invention discloses a key point target recognition system for a hot-line work robot, and belongs to the technical field of hot-line work robot target recognition. The system further comprises an analysis model and a network management model. The target detection model and the analysis model are in bidirectional connection, and the output end of the analysis model is connected with the input end of the network management model; according to the method, the features extracted by the backbone network are fused; secondly, extracting more representative multi-scale features through a TUM (thin U-shaped module) and a FFM (feature fusion module); and finally, fusing the multi-level features through a scale feature aggregation module SFAM to obtain a multi-level feature pyramid for prediction of a final stage, identifying the operation key points of the robot through the system, effectively identifying problems and hidden dangers existing in rotation and movement of different operation tools and operation arms, further effectively coping with and avoiding in time, and improving the working efficiency. Hidden dangers are reduced, and the operation safety is improved.

The invention relates to the technical field of intelligent monitoring, and discloses a high-speed rail station landmark screen guiding system with intelligent monitoring and alarming functions, which is characterized by comprising a controller, a data acquisition module, a voltage acquisition module, an image acquisition module, a calculation module and a line crossing judgment module, the controller is respectively connected with the data acquisition module, the voltage acquisition module and the line crossing judgment module, the line crossing judgment module is connected with the calculation module, and the calculation module is connected with the image acquisition module; according to the high-speed rail station landmark screen guiding system with the intelligent monitoring and alarming functions, the landmark screen guiding system is arranged in a driving interval and a station personnel standing position, personnel crossing a warning line can be alarmed in time, flashing light and sound are given out for prompting, the station personnel are comprehensively monitored, and the safety of the station personnel is improved. And hidden dangers to driving safety are reduced.

The utility model relates to the technical field of hooks, in particular to a gravity-based automatic hook hanging and unloading structure which comprises a main body frame, a deflection rod is rotationally connected to the main body frame, one end of the deflection rod is in threaded connection with a hook body, the other end of the deflection rod is fixedly connected with a weight box, and the gravity center of the weight box is far away from the gravity center position of the deflection rod. A U-shaped plate is fixedly connected to the main body frame, and a square hole is formed in the U-shaped plate. The two ends of the deflection rod are connected with the hook body and the weight box respectively, after goods are hung on the hook body, the deflection rod can be in a vertical state, when the goods are unloaded, the deflection rod is not interfered by external force any more, and the upper end of the deflection rod can deflect towards the position where the gravity center of the weight box is located. The lower end of the deflection rod can deflect towards the position away from the gravity center of the weight box, a rope on the goods can fall off from the hook body, and then before new goods are hung, the weight box only needs to be shifted manually.

The invention relates to a power distribution network primary and secondary fusion coordination model and method of a power system, belongs to the technical field of primary and secondary fusion coordination, can achieve maneuvering and active sampling speed configuration, efficiently improves the measurement sensitivity and instantaneity of abnormal fluctuation of a fusion value, and particularly provides a power distribution network primary and secondary fusion coordination model and method when the fusion value of a switch rapidly changes or is hidden in anomalies. The measuring unit can actively improve the sampling speed, guarantee the real-time mastering of important fusion values and weaken the hidden danger of lagging measurement, and the real-time speed control not only improves the early finding rate of switch faults, but also provides more accurate fault sampling for high-hidden-danger switches, and is suitable for early maintenance and convenient to use. Therefore, the hidden danger of switch damage or accidents is reduced, and finally the reliability of the switch and the high efficiency of switch fault management and control are obviously improved.

The utility model relates to the technical field of power boxes, and discloses a new energy automobile power box which comprises a chassis frame and a fixing part mounting hole, the fixing part mounting hole is formed in the inner wall of the top of the chassis frame, a power module is connected to the outer wall of the bottom of the chassis frame in a clamped mode, and an adjusting mechanism is arranged on the chassis frame. An auxiliary mechanism is arranged on the chassis frame, the adjusting mechanism comprises a ring opening, the ring opening is formed in the inner wall of the left side of the chassis frame, a positioning opening is formed in the inner wall of the bottom of the chassis frame, the inner wall of the right side of the ring opening is in threaded connection with a fixing screw, and a positioning plate is clamped to the inner wall of the bottom of the positioning opening; the outer wall of the left side of the positioning plate is fixedly connected with a power box shell. According to the utility model, the convenient separation of the power box shell and the chassis frame is realized through the adjusting mechanism, so that the cooling module, the inductor module main body and the power module form a modular structure and can be independently disassembled and assembled without overall disassembly, and the maintenance time is greatly reduced.

The present invention discloses a lifting and protection device for automatically opening a material transfer port of an aluminum mold, comprising a support frame detachably mounted at the material transfer port and a cover plate hinged on the support frame, the support frame being fixedly provided with an elastic hinge for automatically opening the cover plate, an elastic plug rod being movably mounted along the lower surface of the cover plate through a connecting piece, the support frame being provided with a slot component for the second end of the elastic plug rod to be inserted when it pops out, and a hook being connected to the elastic plug rod. The various structural functions of the present invention reduce the hidden dangers of the device being fixedly mounted at the material transfer port compared to temporary covering with a wooden board; the cover plate can be automatically opened by means of the elastic hinge, and objects hung on the hook at the bottom of the cover plate can also be automatically lifted.

The present application relates to adjustable support frame, underground support structure and construction method, and relates to the field of support structure, wherein the adjustable support frame comprises a main support assembly and a plurality of detection support assemblies; the main support assembly is arranged in a tunnel or a pipe culvert and comprises a top support frame and a side support frame. By arranging the adjustable support frame composed of the main support assembly and the detection support assembly, the support gap between the main support assembly and the inner wall of the structure with a certain limited space such as a tunnel or a pipe culvert can be detected, and supplementary support can be provided to ensure that the adjustable support frame completely supports the inside of the structure with a certain limited space such as a tunnel or a pipe culvert, and cooperate with the support base assembly to improve the support strength and stability of the adjustable support frame, reduce hidden dangers, and cooperate with corresponding equipment to also provide early warning for the pressure condition of the adjustable support frame, reduce the situation that the staff is trapped due to deformation damage caused by excessive pressure of the adjustable support frame, and the like.

The utility model provides an assembly type catch basin structure and a pouring mold thereof, and belongs to the technical field of drainage engineering. The problems that when a rainwater collecting pipe is installed in an existing prefabricated rainwater well, repeated adjustment is needed, so that the construction efficiency is affected, the problem of water leakage is likely to occur, roadbed emptying is caused, pavement settlement is caused, the maintenance cost is increased, and large hidden danger exists are solved. The rainwater well comprises a rainwater well base, a concrete cushion layer and a rainwater well wall, the concrete cushion layer is arranged on the top end face of the rainwater well base, the rainwater well wall is arranged on the periphery of the concrete cushion layer in a surrounding mode, an external pipe is arranged on the outer side wall of one side of the rainwater well wall, and the rainwater well wall and the external pipe are integrally formed. The device is mainly used for installing and connecting the catch basin and the rainwater collecting pipe.

The utility model relates to spray moisturizing technical field discloses a kind of spray moisturizing devices for paperboard pre-brushing machine, including spray assembly, including atomizer, water pipe is inserted in atomizer side, knob is fixed in atomizer top, switch is provided in the knob side, mounting component, setting on water pipe, including mounting piece, the mounting piece includes mounting disc, the mounting disc is sleeved in the water pipe outside side. The utility model has beneficial effect as follows: using atomizing head direct injection mode, spray is uniform, and spray width can be adjusted according to use width, atomization amount size can also be adjusted, avoid the situation that mist amount is uneven, while no backflow water, reduce water resource waste and related hidden danger, humidifier can be adjusted mounting angle and height according to actual situation when installation, without dismounting device reinstallation, improve the flexibility and convenience of installation, make it better adaptation different use scene and equipment layout.

This utility model provides a self-alarming guardrail for broken railings, including a guardrail body; a monitoring box disposed around the periphery of the guardrail body, which can establish a communication connection with a traffic monitoring terminal; and a detection feedback device including an optical fiber and an optical fiber breakage alarm. The optical fiber is continuously laid along the guardrail body, and the optical fiber breakage alarm is connected to the guardrail body to collect optical fiber signals. When the guardrail body breaks, causing the optical fiber to break, the optical fiber breakage alarm generates a breakage feedback signal and sends it to the monitoring box, from which the traffic monitoring terminal can obtain the corresponding alarm information. The beneficial effect of this utility model is that it can promptly provide feedback on guardrail breakage information, reduce the potential for traffic accidents caused by guardrail breakage, and improve road safety.

The invention provides an implicit behavior data security acquisition method and device based on federal learning, and relates to the field of data security. The method comprises the following steps: acquiring implicit behavior data in a user equipment side, and preprocessing the implicit behavior data; performing feature extraction operation on the implicit behavior data after the preprocessing operation, and obtaining target behavior features corresponding to the keyboard data, the mouse data and the eye movement data respectively; obtaining hybrid model training parameters based on the target behavior characteristics; training parameters through a hybrid model, and carrying out local model iterative training based on a federated learning dynamic aggregation algorithm; obtaining model parameters after iterative training, and adding encryption noise for the model parameters according to a double-layer differential privacy integration mechanism; and obtaining model parameters after noise addition to complete data security acquisition. The problem that most of applications of existing federal learning in implicit behavior data still stay on the structural level, and the hidden danger of behavior privacy disclosure exists is solved.

The invention provides a preparation method of a clarithromycin crude product, and relates to the technical field of medicine preparation. According to the method, oxime etherified silanide is taken as a starting material, various methylation reagents are adopted, toluene is taken as a solvent system, tributyl methyl ammonium chloride is taken as a solid-liquid phase transfer catalyst, potassium hydroxide is taken as an acid-binding agent, a methylation reaction is carried out, deprotection is carried out through tetrabutylammonium fluoride, and oxime hydroxyl is reduced through potassium borohydride, so that a clarithromycin crude product is obtained.

The utility model discloses an insecticide or bactericide fumigation device, and relates to the technical field of bactericide fumigation. The fumigation device comprises a shell, wherein fumigation holes are formed in the upper side of the shell; the fixed cylinder is located in the fumigation hole, a concentric-square-shaped plate is arranged on the upper side of the fixed cylinder, and two rotating plates are elastically and rotationally matched with the interior of the concentric-square-shaped plate. The fumigation holes are formed in the upper side of the shell; the fixed cylinder is located in the fumigation hole, a concentric-square-shaped plate is arranged on the upper side of the fixed cylinder, and two rotating plates are elastically and rotationally matched with the interior of the concentric-square-shaped plate; the annular plate is in elastic and sliding fit with the interior of the fixed cylinder and the interior of the concentric-square-shaped plate, and the upper end of the annular plate is matched with the rotating plate.

This invention discloses a plant-derived herbicide and its preparation method, specifically relating to the field of biological weed control. The whole plant of *Coriandrum sativum* is dried, pulverized, and sieved. After ultrasonic extraction with an organic solvent, the extract is concentrated to obtain a paste-like extract. This plant-derived herbicide contains the following raw materials in volume fractions: 10 parts *Coriandrum sativum* extract, 2 parts emulsifier, and 88 parts water. The technical solution of this invention solves the problem of environmental pollution and pesticide residues exacerbated by existing chemical herbicides. Furthermore, the plant-derived herbicide of this invention, after being prepared into a stable formulation, can effectively control annual weeds, achieving a control effect of over 75% on weeds in farmland. The application of this plant-derived herbicide can significantly reduce the amount of chemical herbicides used, thus reducing environmental pollution.

The utility model relates to an airport deinsectization device which comprises a top plate 10, a containing box 20, a deinsectization lamp 30 and a deinsectization cage 40, the deinsectization lamp is installed on the top plate 10, the containing box 20 is arranged below the top plate 10, and the deinsectization cage 40 is arranged between the top plate 10 and the containing box 20. The insect killing lamps comprise a black light insect killing lamp with the wavelength of 320 nm to 390 nm, a blue light insect killing lamp with the wavelength of 350 nm to 490 nm, a yellow light insect killing lamp with the wavelength of 625 nm to 670 nm, a green light insect killing lamp with the wavelength of 555 nm to 610 nm and a red light insect killing lamp with the wavelength of 500 nm to 565 nm. The insecticidal lamp can meet the insecticidal requirements in most time periods and attract and kill various insects. A metal structure is adopted, fire risks can be avoided, a stable support and a connecting structure are adopted, and hidden dangers such as FOD are reduced.

The invention discloses a semi-physical simulation system of automatic cycle control, which relates to the technical field of semi-physical simulation in ballistic missile simulation technology, including automatic cycle test software, Higale real-time simulation system, inertial measurement combination simulator, integrated navigation simulator, flight control computer, steering gear system and program-controlled power supply system; the automatic cycle test software and the Higale real-time simulation system are connected via TCP / IP protocol to automatically complete test parameter binding and test result acquisition, and the Higale real-time simulation system is deployed with a six-degree-of-freedom dynamics module, an inertial measurement combination simulator and an integrated navigation simulator. The invention reduces the impact on time and accuracy brought by human operation, greatly improves test efficiency, thereby improving the coverage of test parameter states and the credibility of simulation results, and reducing the hidden dangers of flight tests.

The application discloses a modular quick-change module of an OMR vacuum laminating machine and a laminating device, relates to the field of vacuum laminating machines, and comprises a rack, a linear module is mounted on the inner side of the rack, an installation plate is fixedly connected to the top of the linear module, a workpiece is placed on the inner side of the installation plate, a hydraulic cylinder is mounted on the inner side of the rack, and a top seat is fixedly connected to the output end of the hydraulic cylinder; the cooperation of the rectangular plate and other parts enables the second nozzle to start from the sealed end, gradually advance to the middle area and the area close to the other end, and apply uniform pressure; this process not only continuously discharges air to the end, but also assists the close lamination of the film and the workpiece surface through uniform air flow pressure, ensures that the back glue of each area can fully contact the workpiece, reduces the air bubble hidden danger caused by local lamination from the root, and realizes the dead-angle-free air exhaust from one end of the workpiece to the other end, and further reduces the overall air bubble generation rate.

The utility model discloses an electric power dispatching simulation screen which comprises an installation frame, a display screen is arranged in the installation frame, an installation groove is formed in the front surface of the installation frame, a cleaning assembly is arranged in the installation groove, the cleaning assembly is located in the installation groove, the installation groove is sealed by the cleaning assembly, and the display screen is arranged in the installation groove. A sealing plate is arranged at the rear end of the mounting frame, a plurality of lead pipes are fixedly connected to the upper surface of the mounting frame, the lower ends of the lead pipes penetrate through the upper wall of the mounting frame, two rubber strips are arranged in each lead pipe and distributed oppositely in the left-right direction, and the lower ends of the rubber strips are fixedly connected with the lower ends of the lead pipes. The upper end of the rubber strip is fixedly connected with a rubber sleeve, and when the imitation screen is used, the upper end of the rubber sleeve is connected with the lower end of the lead pipe in a clamped mode. Through the structure, the hidden danger that dust enters the mimic screen is reduced, and the convenience of mimic screen maintenance work is improved.

The invention discloses a visual data information acquisition system based on big data and a medium thereof, and particularly relates to the field of electronic commerce, and the visual data information acquisition system comprises a data encryption acquisition module, a data cleaning and integration module, a data analysis module, a real-time data monitoring module, a visual template customization module and a dynamic data interaction module. According to the visual data information acquisition system based on big data and the medium thereof, target platform data is encrypted through a data encryption acquisition module, so that hidden dangers of data acquisition are reduced; the real-time data monitoring module is used for carrying out real-time data processing operation and setting a data change rule and an early warning mechanism so as to obtain and update data in time; third key information is received through the dynamic data interaction module and displayed on a visual interface according to a preset mode, autonomous exploration and prediction analysis of the dynamic data by the user are provided, and the interactivity of the system is improved.

The invention discloses an unmanned aerial vehicle-based airborne pump set type foam fire extinguishing device, and relates to the technical field of fire extinguishing equipment, the unmanned aerial vehicle-based airborne pump set type foam fire extinguishing device comprises an unmanned aerial vehicle main body, a pump set liquid supply mechanism is fixedly arranged in the middle of the unmanned aerial vehicle main body, a support is arranged below the unmanned aerial vehicle main body, and a gas-liquid mixing foaming assembly is placed at the top end of the support; a spraying gun is fixedly arranged on one side of the gas-liquid mixing foaming assembly, two supporting blocks are symmetrically and fixedly arranged on the surface of the support, and pressing plates are rotationally arranged in the supporting blocks. The device has the beneficial effects that an independent electric pump set constant-pressure liquid supply mode is adopted, closed-loop precise regulation and control are achieved in cooperation with an onboard electric control module, constant-pressure and constant-flow conveying of a fire extinguishing agent is kept in the whole process, and the hidden danger of pressure attenuation is thoroughly eliminated; no matter for low-altitude fire extinguishing operation or high-rise precise fire extinguishing operation, the spraying distance and flow are always stable and controllable, the fire point covering precision is greatly improved, and the fire extinguishing stability is fundamentally guaranteed.

The utility model discloses a pneumatic push rod formula agitator in sugar tank of sugar spraying machine relates to food processing equipment technical field, the utility model discloses a sugar tank body, the top of sugar tank body side is equipped with the fixed frame, the inboard of both sides of fixed frame is equipped with pneumatic push rod, the both sides of fixed frame are equipped with slide between, the telescopic axle of two pneumatic push rods is equipped with the moving block of slide cooperation with slide, the side of moving block is equipped with the stirring frame of being located in the sugar tank body and is rotated cooperation, be provided with connecting assembly between stirring frame and moving block. The utility model discloses the telescopic axle of pneumatic push rod drives moving block and moves along the slide repeatedly, and the rotation of rotating rod will be driven to the sliding of moving block to drive stirring frame and carry out the rotary motion, realizes all -round, high -efficient stirring of sugar liquid in sugar tank body, reduces the hidden danger that the iron filings and oil dirt drop in the sugar tank through the screw stirring.

The invention relates to the field of aquaculture, and discloses a mud flat shellfish breeding method which comprises the following steps: mixing algae powder and fresh microalgae in a feeding device to obtain bait; the baits are fed to mud flat shellfish larvae through a feeding device, and seedling raising is conducted; wherein in the bait, the cell number ratio of the algae powder to the fresh microalgae is 100 or less; wherein the mixing conditions are as follows: the pressure is negative pressure, and the time is more than 5 minutes. According to the method, the hidden danger that culture is unstable when the algae powder is used for replacing fresh algae can be reduced, and mixed feeding of the microalgae and the algae powder for full-artificial breeding of the mud flat shellfish is achieved.

The utility model discloses a hot air circulating device for an industrial unfreezing warehouse, which comprises a pipeline with an air suction opening, a shutter, a pipeline without an air opening, an inlet square-to-round part, an inlet flexible connection part, a mixed flow fan, an outlet flexible connection part, an outlet square-to-round part, a pipeline with an air outlet and an air inlet pipeline, an inlet flexible connector is mounted at the air inlet; the outlet end of the outlet flexible connector is connected with one end of the outlet square variable circle, and the other end of the outlet square variable circle is connected with the pipeline with the air outlet; the inlet end of the inlet flexible connector is connected with one end of the inlet square-variable circle, the other end of the inlet square-variable circle is connected with the multiple pipelines without the air openings, and the pipelines without the air openings at the tail end are connected with the air inlet pipeline and the exhaust inlet pipeline. And shutters are arranged on the pipeline with the exhaust inlet, the pipeline with the air outlet and the pipeline with the air inlet. Hot air can circulate in the unfreezing warehouse, hot air gathered on the upper portion is discharged to the lower portion through the circulating device, the temperature difference between the upper portion and the lower portion is reduced, and the unfreezing effect is improved.

The application relates to the technical field of welding processing equipment, and discloses a component positioning and welding tool of a remote controller, which comprises a base, a supporting base is arranged at the middle of the bottom end of the base, an electrical box for providing control and energy supply for the whole device is arranged in the supporting base; a conveying and discharging mechanism is arranged at the middle of the top end of the base and is used for conveying a printed circuit board in the remote controller and discharging static electricity generated by friction on the printed circuit board. When the printed circuit board on the remote controller is subjected to welding processing of metal springs, ion wind generated by an ion fan in the removing protection mechanism is pressurized through a flat accelerating part and can be concentratedly sprayed to a welding area, so that partial static electricity generated in the welding process can be comprehensively eliminated, hidden damage of integrated circuits caused by static electricity residues can be avoided, the ion wind can also blow the flexible grounding sheet to contact the plate body, a secondary static electricity discharging channel is formed, and double protection is provided for static electricity removal.

The utility model relates to a multifunctional nursing rescue device, including support unit, placing unit and moving unit, placing unit is provided above support unit, moving unit is provided below support unit, placing unit includes lying plate and heating plate, lying plate is used for placing first-aid patient, heating plate is used for heating lying plate. When the first-aid device is used for carrying out first aid on a wounded person with temperature loss, the lying plate can be started for heating, the body temperature of the wounded person is increased, and the practicability of the device is greatly improved; according to the utility model, impact force caused by vibration can be greatly reduced and buffered when a first-aid patient is transported, so that hidden dangers caused by vibration to the first-aid patient are reduced to the minimum, and the damping performance of the device is greatly improved; the medical first-aid cart can be used for storing first-aid medicines, tools, oxygen masks, infusion supports and the like in the transportation process of first-aid patients so as to be used when first-aid needs are needed, meanwhile, the waste barrel can be conveniently replaced and placed for discarding medical waste, and the functionality of the medical first-aid cart is greatly improved.

The invention relates to a centralized control type winching load test device which is characterized in that the bottom ends of a left stand column and a right stand column are fixedly connected with an embedded base, the upper ends of the left stand column and the right stand column are jointly connected with a cross beam through bolts, and four fixed-point pulleys are arranged at the front and rear parts of the two ends and the middle part of the cross beam; steering mechanisms are symmetrically arranged on the two sides of the fixed-point pulley in the middle of the cross beam, the four fixed-point pulleys are connected with the steering mechanisms through steel ropes to achieve left-right movement of the steering mechanisms, and the steel ropes are connected with a movable balance weight structure. According to the invention, the load test work of hoisting equipment, especially winching, can be carried out; due to the arrangement of the lifting structures on the two sides, a centralized control winch synchronism improvement test is carried out, and the working efficiency in an inspection test is improved; the movable counterweight structure can change the test load according to different requirements; and meanwhile, on-site construction safety is improved, equipment hidden dangers are reduced, and wide market application prospects are achieved.

The utility model discloses a practical crown block rotary sling three-in-one speed reducer installation reinforcing device which comprises a lifting seat and a rotary frame, the rotary frame is rotatably installed at the bottom of the lifting seat, two edges of the lifting seat are respectively provided with an installation groove with an upward opening, and a driving mechanism and a reinforcing structure are respectively arranged in the two installation grooves. The driving mechanism comprises a speed reducer body, the speed reducer body is fixed to the bottom face of the mounting groove through a plurality of connecting bolts, the reinforcing structure comprises a support, the support is clamped to the peripheral side of the speed reducer body, and the outer side, opposite to the speed reducer body, of the support is connected with the groove wall of the mounting groove. The speed reducer body is fixed and limited through the support, shearing force borne by the connecting bolts of the speed reducer body is greatly shared, the situations of looseness and breakage of the connecting bolts are reduced or even eliminated, the speed reducer body is firmly installed, breakage of the output shaft of the speed reducer body is avoided, and the hidden danger of equipment accidents is reduced or even eliminated.

The invention discloses a high-voltage box (30), a power battery thereof and an electric vehicle, the high-voltage box (30) is used for being electrically connected between a power battery system and a driving system of the electric vehicle, and the high-voltage box (30) comprises a shell (3), a shell (3) of the high-voltage box (30) is provided with a transfer connector (33) connected with a power battery system, a power transmission connector (32) electrically connected with a driving system and a charging socket (31) matched with a charging gun (50) in an inserted mode, the high-voltage box (30) is directly matched with the charging gun (50) in an inserted mode, adapter cables are saved, the number of connectors is reduced, meanwhile, the part cost and potential quality hazards are reduced, and the service life of the high-voltage box (30) is prolonged. The power battery adopting the high-voltage box has the advantages of being easy to maintain and higher in energy density, and the electric vehicle adopting the power battery has longer endurance mileage.