111results about How to "Meet operational needs" patented technology

The invention provides a battery management system design method applied to a direct-current photovoltaic micro-grid. The system comprises a data acquisition and monitoring module, an intelligent algorithm analysis module and a dynamic balance management module. Parameters such as voltage, current and temperature of the battery pack are collected in real time through a sensor, data are processed and analyzed through big data analysis and a machine learning algorithm, and the health state and the residual life of the battery pack are predicted. And the system dynamically adjusts the charging and discharging states of each battery unit according to an analysis result, so that the over-charging and over-discharging phenomena are avoided, and the service life of the battery pack is prolonged. According to the intelligent battery management system, the operation efficiency and reliability of the photovoltaic micro-grid are improved, and remarkable economic and social benefits are achieved.

The invention provides an active distribution network scheduling optimization method comprising a micro-grid group, a medium and a system, and belongs to the technical field of active distribution network scheduling, and the method comprises the steps: obtaining an active distribution network parameter and a micro-grid parameter of each micro-grid in an active distribution network; calculating the similarity between any two micro-grids by using a preset micro-grid similarity function; establishing an active power distribution network stable scheduling equation set considering the power distribution network parameters and a micro-grid stable scheduling equation set considering the micro-grid parameters; a double-layer optimization model based on a grey wolf hunting optimization algorithm and a genetic algorithm is constructed, the grey wolf hunting optimization algorithm is used for active power distribution network optimization, and the genetic algorithm is used for microgrid optimization; when the grey wolf population is initialized, setting an initial population of a genetic algorithm for each micro-grid to represent various possible scheduling schemes in the micro-grid; by not executing outer-layer optimization and inner-layer optimization, the problem that the characteristics of the whole active power distribution network and the interior of the micro-grid are difficult to consider in the prior art is solved.

The invention provides a double-pump-head four-channel liquid cooling centrifugal pump and a using method thereof.The double-pump-head four-channel liquid cooling centrifugal pump comprises a machine shell, a water pump support is arranged below the machine shell, and the pump can cover wider flow and lift ranges through double impellers and four channels and is suitable for various application scenes. The connection mode is flexible, various application requirements can be met, and the use flexibility is improved. The multiplication of flow or lift is realized under the same power, and the efficiency and the performance of the pump are improved. The four-way water pump can meet the operation requirements of two water ways at the same time, is suitable for the scene where multiple systems need to be supplied at the same time, and when the four-way water pump is used in cooperation with a four-way valve, the flow lift range can be widened to twice that of a common water pump, energy consumption is reduced, and operation cost is reduced. Heat of the pump body motor is taken away through medium liquid, the temperature is lowered, and the service life is prolonged. The pump has wide application prospects in the fields of industry, agriculture, buildings and the like, and the application scene and the application range of the pump are widened.

The utility model relates to a portable oscillograph with a mistaken touch prevention function, which is characterized by comprising an oscillograph main body with a display screen and an operation panel arranged on the surface, and a mistaken touch prevention assembly arranged on the oscillograph main body, according to the utility model, through the arranged side-open type protective shell, when the oscillograph main body needs to be used, the side-open type protective shell is turned over and covers the operation panel, so that the convex button of the operation panel is prevented from being accidentally touched, and meanwhile, the concave type pressing part arranged on the side-open type protective shell can be pressed by the concave type pressing part. After the side-opening protective shell covers the operation panel, the operation requirement of an operator on the oscillograph button can be continuously met, the sunken button enables the operator to press the button of the oscillograph only when the finger stretches into the movable sleeve piece, and the occurrence of a mistaken touch event is effectively avoided.

The invention provides a resource allocation method and device, electronic equipment and a storage medium, the method is applied to a many-core system, the many-core system comprises a plurality of processing cores, each processing core comprises multiple types of hardware resources, and the method comprises the following steps: constructing a resource map according to the hardware resources of the many-core system; according to the execution process of a target task, the target task is divided into a plurality of task stages based on the resource demand change, and the resource demand of each task stage for different types of hardware resources is different; according to the resource demand quantity of each task stage, the resource map corresponding to the hardware resources is divided, the resource group allocated to each task stage is determined, and the resource group comprises multiple types of hardware resources, so that different types of resource allocation can be performed according to the resource demand quantity of different task stages, and the resource allocation efficiency is improved. Resource allocation is more flexible, and the resource utilization rate is improved.

The utility model provides a double-cavity heat preservation oil storage tank. Relates to the technical field of oil storage. The double-cavity heat preservation oil storage tank comprises a tank body and a heating assembly, the tank body is provided with a partition plate so as to divide the tank body into a first cavity and a second cavity, the heating assembly is arranged in the first cavity and used for heating the first cavity, the heating assembly comprises a heating element and a heat dissipation piece, the heat dissipation piece wraps the heating element, and the heat dissipation piece wraps the heating element. The heating element transmits heat into the tank body through the heat dissipation piece.

The invention provides a method and a device for controlling the output power of a hydrogen fuel cell, relates to the technical field of fuel cells, and mainly aims to improve the output power of the hydrogen fuel cell. According to the main technical scheme, a power adjusting instruction of the hydrogen fuel cell is obtained, wherein the power adjusting instruction is used for adjusting the output power of the cell when the vehicle is in the plateau environment; environment parameters and required power of vehicle driving are collected according to the power adjusting instruction; calculating a target air flow by using the environmental parameters, the required power and a preset air flow model; and adjusting the air compressor according to the target air flow so as to control the output power of the hydrogen fuel cell to meet the required power. The invention is used for controlling the output power of the hydrogen fuel cell to meet the required power.

The embodiment of the invention provides a refrigerant control system and method, the system comprises an air conditioner, a water heater and a control module, the air conditioner comprises an indoor unit, a condenser and a compressor, and the water heater comprises a water tank; the control module is used for controlling the first valve to be opened when the air conditioner is in a refrigeration mode, so that a refrigerant output by the compressor passes through the condenser and the indoor unit and then returns to the compressor; and / or when the water heater is in the working mode, the second valve is controlled to be opened, so that the refrigerant output by the compressor passes through the water tank and the indoor unit and then returns to the compressor. According to the embodiment of the invention, the air conditioner and the water heater share one outdoor unit, the first valve is controlled to be opened and / or the second valve is controlled to be opened through the control module of the outdoor unit, so that the flow direction of the refrigerant is controlled, the operation requirements of a user on the air conditioner and / or the water heater are met, and meanwhile, the utilization rate of resources and the use experience of the user are also improved.

The utility model discloses a low-temperature anti-cracking novel flexible cable, which comprises at least three groups of conductors, each conductor comprises a plurality of twisted flexible round copper wires, the outer wall of each conductor is coated with an insulating layer, the conductors and the insulating layers form a cable core, the outer wall of the cable core is provided with a filling layer, the outer wall of the filling layer is lapped with a lapped layer in an overlapping manner, and the lapped layer is provided with an insulating layer. The outer wall of the wrapping layer is wrapped by a shielding layer formed by weaving copper wires, the outer wall of the shielding layer is wrapped by a lining layer, the outer wall of the lining layer is provided with an armor layer formed by tightly winding low-carbon steel wires, the outer wall of the armor layer is wrapped by a flame-retardant layer, and the outer wall of the flame-retardant layer is wrapped by an outer protective layer. Soft round copper wires are selected as conductors, so that the stability of electric energy transmission of the cable is improved while the overall flexibility of the cable is guaranteed; irradiation crosslinked polyethylene is adopted for insulation, so that the excellent electrical insulation performance, wear resistance, impact resistance, environmental stress cracking resistance and the like of crosslinked polyethylene are reserved, and the defect that during traditional silane steam crosslinking, steam immerses into the insulation to accelerate oxidation of a conductor is overcome.

The invention discloses an automatic adjusting system for high-speed rail dispatching, which is characterized in that the occupation conditions of station tracks and trains are visually displayed through a visual interface, a dispatcher can quickly grasp the global situation, the decision-making efficiency is improved, meanwhile, the wrong dispatching risk caused by information disorder is reduced, an automatic arrangement function quickly solves conflicts according to a preset rule, and the dispatching efficiency is improved. Scheduling flexibility and response speed are improved, manual intervention and cost are reduced, operation efficiency is improved, statistics of station track change conditions provides data support for follow-up analysis and optimization, a dispatcher is helped to optimize resource allocation, decision accuracy is improved, in addition, a specific train number station track is fixed, specific operation requirements are met, and the service life of the dispatcher is prolonged. The locking function reduces the conflict risk related to a specific train number, and through comprehensive application of visual, automatic and intelligent means, the scheduling efficiency, safety and flexibility of the high-speed railway arrival and departure line application system are remarkably improved, the operation cost is reduced, and a powerful guarantee is provided for smoothness and high efficiency of railway transportation.

The handrail structure convenient to assemble comprises a handrail base and a handrail shell, fixing clamping pieces are arranged on the left side and the right side of the upper surface of the handrail base respectively, clamping grooves are formed in the fixing clamping pieces, and elastic clamping pieces matched with the clamping grooves in a clamped mode are arranged on the left side and the right side in the handrail shell respectively. An unlocking separation assembly is arranged on the armrest base between the left and right fixing clamping pieces; the handrail shell and the handrail base are assembled in a longitudinal insertion manner; the elastic clamping piece is clamped into the clamping groove when longitudinally moving along with the armrest shell; and the unlocking separation assembly is used for driving the elastic clamping piece to be separated from the clamping groove, and meanwhile, the unlocking separation assembly can drive the armrest shell to move upwards relative to the armrest base, so that the armrest base is separated from the armrest shell. The device is convenient to disassemble and separate, so that a user can disassemble the device by himself / herself in the later period without tool operation, and the operation and use requirements of the user are met.

This utility model discloses a self-locking hydraulic pipe joint, including a male joint and a female joint. The male joint has a pin, and a sealing sleeve and a spring are slidably fitted onto the surface of the pin. Under the action of the spring, the sealing sleeve can cover the connecting hole on the pin. A locking ring groove is provided on the outer wall of the pin. The female joint has an axially sliding valve core inside, which is connected to the spring and used to close the inner flow channel. The female joint also has multiple radially arranged locking pins, which cooperate with the locking ring groove of the pin to achieve mechanical locking. During the insertion process, the pin pushes the valve core back and compresses the spring, while the sealing sleeve backs to connect the connecting hole with the inner flow channel for flow. The locking pins automatically spring into the locking ring groove to achieve self-locking connection. The locking pins are made of ferromagnetic material and can be quickly unlocked by magnetic attraction from an external magnetic ring. This utility model has a compact structure, automatic sealing, self-locking, and quick unlocking functions, is easy to operate, and is suitable for hydraulic systems with high sealing and high reliability requirements.

A multifunctional cooling and heating integrated defrosting system suitable for middle and high-end passenger cars comprises a defroster shell, and a heating core body, a refrigerating core body and a centrifugal fan are arranged in the defroster shell. Wherein the heating core body is connected with a heating core body water inlet connector and a heating core body water outlet connector, the refrigeration core body is connected with a refrigeration core body refrigerant connector, an air outlet module is arranged at an air outlet in the upper portion of the heating core body, and an air inlet module is arranged at an air inlet in the lower portion of the refrigeration core body. The automobile air conditioner not only has the basic winter heating function or the defrosting / demisting function of the front windshield, but also meets the independent cooling function of a driver area; and the requirements of defrosting, demisting, air purification, air quality monitoring, air outlet mode adjustability, top-speed cooling or heating, full-automatic temperature control, partitioned temperature control of a driver area and a passenger area and the like are met.

This invention provides a flattening device for the ends of heating plastic pipes, applicable to the field of plastic pipe flattening processing equipment. The device includes: a support mechanism, divided into a main frame and a secondary frame; a pipe clamping mechanism for clamping and fixing the bent portion of the plastic pipe; a tail-end positioning mechanism for providing auxiliary support and positioning for the end of the plastic pipe furthest from the flattening end; an inner mold for extending into the flattening end and applying a compressive force to its inner wall; an outer mold, corresponding to the inner mold, for applying a compressive force to the outer wall of the flattening end; and a flattening drive mechanism, connected to both the inner and outer molds, for driving the inner and outer molds to achieve either mating compression or separation and resetting. This invention, through the corresponding mating of the outer and inner molds, applies a compressive force to the outer wall of the flattening end, ensuring that the flattening process meets design requirements, achieving high flattening accuracy, and facilitating convenient and efficient demolding from the narrow-mouth flattening end.

The invention belongs to the technical field of narrow-band superposition random vibration, and particularly relates to a large-weight airborne equipment mounting structure resistant to fixed-frequency vibration. According to the structure, a fixing plate comprises a first transverse plate and a first vertical plate, the first vertical plate is provided with an outer edge matched with a machine body structure in shape, and the outer edge of the first vertical plate is connected with the machine body structure through bolts; the fixed beam comprises a second transverse plate and a second vertical plate, and the second vertical plate is connected with the machine body structure through bolts; the cross beam comprises an upper margin plate, a lower margin plate and a cross beam web connected with the upper margin plate and the lower margin plate, one end of the lower margin plate is connected with the first transverse plate through a bolt, the other end of the lower margin plate is connected with the second transverse plate through a bolt, and the upper margin plate is used for installing airborne equipment; the lug comprises an upper flange, a lower flange and a lug web connected with the upper flange and the lower flange, the lower flange is connected with the first transverse plate through a bolt, and the upper flange is used for mounting airborne equipment. According to the invention, the operation requirement of heavy-weight airborne equipment can be well met, and the narrow-band stacking random vibration environment requirement can be met.

The utility model belongs to the technical field of cold and hot water units, and discloses a four-way valve cold and hot machine which comprises an outer box body, an upper cover is fixedly installed at the upper end of the outer box body through bolts, a main machine and an evaporator are fixedly installed in the outer box body, and a liquid inlet pipe and a liquid outlet pipe are installed on the side surface of the main machine. A mounting plate is fixedly arranged on the surface of the outer side of the main machine, a non-return mechanism is arranged on the upper surface of the mounting plate, and by preventing hot air from flowing back and communicating, heat loss is reduced, so that energy efficiency is improved, and efficiency is improved. According to the four-way valve cooling and heating machine, a linkage structure of the switching disc, the flow guide groove and the one-way valves is integrated in the non-return mechanism, accurate non-return and energy efficiency improvement are achieved through switching of the one-way valves with different damping characteristics, and dual protection of mechanical damping non-return and electric control path cut-off is formed in cooperation with on-off control over a liquid outlet path through an electromagnetic valve; and hot air is thoroughly prevented from flowing back and communicating through a gap between the four-way valve and the non-return box.

The present application relates to the field of coking, synthetic ammonia and the like containing ammonia wastewater treatment, and discloses a novel ammonia evaporation energy-saving process system, a primary ammonia evaporation tower, an intermediate pressurizing pump set, a water flow regulating device, a secondary ammonia evaporation device, a flash tank, a steam ejector, a pressurizing pump set and a control unit. After the ammonia-containing wastewater is preliminarily treated by the primary ammonia evaporation tower, it is delivered to the secondary ammonia evaporation device by the pressurizing pump, and introduced into new steam for secondary ammonia evaporation. After the secondary ammonia evaporation, the wastewater flows into the flash tank to produce flash steam by cooling and pressure reduction, and the flash steam is pressurized by mixing with the new steam through the steam ejector, and then returns to the primary ammonia evaporation tower or the secondary ammonia evaporation device, so that the steam is recycled multiple times. The system can effectively reduce the new steam consumption by 35-45% under the premise of ensuring the stability of the ammonia nitrogen index of the effluent, improve the energy utilization rate, reduce carbon emissions, and is suitable for direct ammonia evaporation and indirect ammonia evaporation systems.

The utility model discloses a parallel tail end multi-degree-of-freedom mechanical arm which comprises two groups of branch chains which are symmetrically arranged and fixed at two ends of a platform, each group of branch chains comprises a base, a first motor and a second motor are respectively arranged on two sides of the base, the first motor is connected with a first short connecting rod through a rocker arm, and the second motor is connected with a middle supporting piece. One end of the supporting piece is hung below the base through a support, the other end of the supporting piece is movably connected with the middle of the first long connecting rod, one end of the first long connecting rod is connected with the first short connecting rod, and the other end of the first long connecting rod is movably connected with the tail end platform. The other end of the second long connecting rod is movably connected with the tail end platform. According to the mechanical arm, the multi-degree-of-freedom parallel mechanical arm of the end effector can be achieved, and the problems that an existing parallel mechanical arm is complex in structure and high in control coupling degree, the degree of freedom of the end effector is limited, and installation and maintenance are difficult are solved.

The utility model discloses a telescopic rotary island table for solving the single adjustment function of movable panel in the existing island table, leading to low space utilization, and the technical problem of insufficient use convenience. The telescopic rotary island table specifically includes island table body, telescopic rotary component, fixed panel and movable panel, the fixed panel is connected in the top of island table body, and the gap is left between fixed panel and island table body to form movable cavity, the movable panel includes the movable end portion close to island table body, and the movable end portion is movably arranged in movable cavity through telescopic rotary component to make movable panel driven can make linear motion and rotary motion around island table body relative to island table body.

The utility model relates to a forced air cooling type energy storage battery PACK, which comprises a shell, two battery modules are arranged in the shell, each battery module comprises a plurality of battery cells arranged along a first direction, a ventilation duct is formed between two adjacent battery cells, a sealing partition plate is arranged on one side surface of each battery module along a second direction, and the two ends of each battery module are respectively connected with the shell in a sealing manner. A heat dissipation cavity which is used for accommodating the battery module and is communicated with the ventilation air duct is formed in the shell; a plurality of groups of air holes are formed in the sealing partition plate at intervals in the first direction, and each group of air holes comprises one or more through holes formed at intervals in the height direction; the air holes are correspondingly communicated with the ventilation air duct; an adjusting valve for adjusting the ventilation area is arranged in the through hole; a main air duct is formed between the two battery modules through the two sealing partition plates, and heat dissipation fans are arranged at outlets in the two ends of the main air duct respectively; and the shell is provided with a hollow area for ventilation. According to the utility model, the heat dissipation effect is improved, and the problem of poor temperature consistency of the battery module is solved.

The invention provides a video editing method, terminal equipment, a storage medium and electronic equipment, and the method comprises the steps: responding to a detected first operation, and displaying a first window in a display interface of the terminal equipment; in response to an operation instruction for a video frame in the first window, executing an operation on the video frame, the video frame being at least a part of video frames in a video displayed in the display interface; and displaying a target video in the display interface, wherein the target video at least comprises an operation result of the video frame. Through the method, the editing efficiency of the user can be improved.

This invention relates to the field of household appliance technology, and discloses a control method and a garment processing device. The garment processing device has a display screen with an adjustable display position. The control method includes the following steps: detecting whether a user is moving within a preset area; when user movement is detected within the preset area, determining whether the user's movement target is the current garment processing device; if so, acquiring user information and controlling the display screen to adjust to a preset display position corresponding to the user information; if not, the display screen maintains its initial position. That is, when a user is present in the preset area, the display screen is only controlled to adjust its display position when the user's movement target is determined to be the current garment processing device. This prevents frequent adjustments to the display screen due to misjudgment, reducing the failure rate. Adjusting the display position according to user information allows the display screen to be positioned optimally for the user to view and operate, improving user convenience.

The application relates to a power supply multiple working mode automatic switching controller and a car, a power supply module one is configured to receive a power input signal and output a power supply signal one; an MCU microcontroller is configured to enter a standby state in response to the power supply signal one, listen to a wake-up signal, and send a SOC state switching signal based on a listening result; a power supply module two is configured to receive a power input signal and output a power supply signal two, and switch between a PFM mode and a PWM mode according to a level high-low result of the listening result obtained through a MODE pin; and a SOC circuit is configured to enter a standby state in response to the power supply signal two and switch between a sleep state and a normal working state according to the SOC state switching signal. The application can solve the problem that a power supply chip can only run in a single mode and cannot be switched in the related art.

The invention discloses a plutonium-containing feed liquid continuous evaporation concentration and oxalic acid destruction method and system.The method comprises the steps that a manganese solution and nitric acid are added into the plutonium-containing feed liquid for seasoning, and mixed feed liquid is obtained; continuously adding the mixed material liquid into an evaporator, heating and maintaining a preset temperature, so that the mixed material liquid is evaporated and concentrated in the evaporator, and oxalic acid destruction is completed; when the concentration of the feed liquid in the evaporator reaches the required multiple and the damage of oxalic acid meets the requirement, the concentrated feed liquid starts to be continuously discharged to a concentrated liquid receiving tank, continuous feeding and discharging are achieved, the discharging speed is equal to the feeding speed / the concentration multiple, the feeding speed of the mixed feed liquid and the discharging speed of the concentrated liquid are adjusted, and the feeding speed of the mixed feed liquid and the discharging speed of the concentrated liquid are adjusted; and the liquid level is constant at the preset liquid level value. The method has the advantages of large concentration multiple, high oxalic acid damage rate, large working flux, small equipment fatigue damage, stable equipment, continuous operation and simple operation, can meet the operation requirements of a post-treatment plant, greatly reduces the treatment amount of a plutonium purification cycle flow, and reduces the wastewater amount.

This utility model discloses an armrest box structure and engineering machinery, including an upper support assembly and a lower support assembly. The upper support assembly includes a handrest pad assembly, a first slide rail, and a support arranged sequentially from top to bottom. The first slide rail is arranged horizontally and connects the handrest pad assembly and the support. The handrest pad assembly can slide and lock relative to the support in the front-back direction. The lower support assembly includes a fixed seat distributed along the left and right sides, a second slide rail, and a support. The second slide rail is arranged vertically and connects the fixed seat and the support. The support can slide and lock relative to the fixed seat in the vertical direction. A support plate is fixedly installed on the upper part of the support. The rear end of the support is hinged to the support plate through a first pin, and the first pin extends axially along the left and right sides. This utility model can realize front-back, up-down, and flip-up adjustable functions, is simple to operate, and has a large adjustment range.

The invention relates to an annual bill generation method and device for online car-hailing drivers, computer equipment and a medium. The method comprises the steps of receiving an annual bill display instruction, determining a tenant associated with a target online car-hailing driver as a target tenant, querying a valid bill page template sequence corresponding to the target tenant from a configuration server, and recording the valid bill page template sequence as a target bill page template sequence; in response to a bill page browsing operation, determining a to-be-rendered bill page template from the target bill page template sequence as a target bill page template, and performing page rendering based on the target bill page template to display a corresponding annual bill page; the annual bill page comprises multiple pieces of bill document information; each piece of bill copywriting information is obtained through rendering based on the index value of at least one bill index related to one bill copywriting component in the target bill page template and the corresponding copywriting template. According to the invention, personalized and flexible online car-hailing operation requirements of tenants in an online car-hailing aggregation platform can be met.

The present invention provides a feeding mechanism for material rolling processing, which belongs to the technical field of rolling processing equipment. It solves the problem that the existing rolling processing equipment is inefficient and cannot guarantee product quality. The present invention provides a feeding mechanism for material rolling processing, including a base frame, a switching seat, a switching assembly and a driving assembly. In the present invention, through the coordinated use of the base frame, the switching seat, the switching assembly and the driving assembly, the entire process of automatic feeding, rolling processing and automatic output of the feeding mechanism can be realized, thereby effectively improving the working efficiency of the feeding mechanism; secondly, during the material processing process, the inner ejector pin and the outer ejector pin respectively press against the two ends of the material to ensure that the material will not be misplaced during the processing, thereby ensuring the processing accuracy of the material.

The invention discloses a mouse dynamic adjustment method, device, system and equipment and a medium, and the method comprises the steps: obtaining a game picture through intelligent glasses, and obtaining a target key element in the game picture; obtaining a mouse operation process corresponding to the target key element, and determining a mouse parameter adjustment strategy based on the mouse operation process; and performing mouse parameter adjustment according to the mouse parameter adjustment strategy so as to enable the mouse parameters to adapt to the mouse operation process. Through data interaction between the intelligent glasses and the electronic equipment, a cooperative working mechanism of the intelligent glasses and the mouse peripheral is constructed, the advantage of the multi-mode perception capability of the intelligent glasses is fully played, the mouse parameter adjustment is assisted through the intelligent glasses, the manual adjustment frequency of a player is reduced, and the user experience is improved. In this way, on one hand, the adaptation degree of the mouse parameters and the game scene can be improved, and on the other hand, the game immersion of the game player is improved, and the game player is helped to improve the competitive performance in the game.

The cardio-cerebral-pulmonary resuscitation rescue device for the emergency department comprises a supporting device, a braking device and a fixing device, the braking device is arranged on the outer wall of an arc-shaped plate of the supporting device, and the fixing device capable of rotating and moving up and down is arranged at one end of the supporting device. The supporting device, the braking device and the fixing device work cooperatively, the supporting device provides a stable basic platform for cardio-pulmonary resuscitation operation, the braking device achieves labor-saving and effective pressing operation, and the fixing device ensures the stability of the body of a patient; by means of the cooperative work mode, the whole cardio-pulmonary resuscitation rescue process is more efficient and orderly, the functions of all the parts are mutually complemented, the success rate of cardio-pulmonary resuscitation is improved to the maximum extent, and a more ideal equipment solution is provided for cardio-cerebral-pulmonary resuscitation rescue work in the emergency department.

The invention belongs to the technical field of sewing machines, and specifically relates to a novel thread trimming and presser foot lifting self-separating device of an overlock sewing machine and the overlock sewing machine, comprising a driving motor, which is mounted on a frame and provides power for other components; a presser foot lifting mechanism, which is mounted on the frame and performs a presser foot lifting action; a thread trimming mechanism, which is mounted on the frame and performs a thread trimming action; and also comprises a presser foot lifting swing arm assembly, which is arranged at the lower part of the frame, the right end of the presser foot lifting swing arm assembly is rotatably connected to the frame, the middle part of the presser foot lifting swing arm assembly is connected to the presser foot lifting mechanism, and the left end of the presser foot lifting swing arm assembly is used to connect a pedal mechanism; a thread trimming swing arm assembly, which is arranged on one side of the presser foot lifting swing arm assembly; the middle part of the thread trimming swing arm assembly is rotatably mounted on the frame, and the right side force arm of the rotating point drives the thread trimming mechanism; a pressing portion is arranged between the left side force arm of the rotating point and the presser foot lifting swing arm assembly, and the pressing portion is used to drive the presser foot lifting swing arm assembly to move.