33results about How to "Avoid balance" patented technology

The invention relates to the technical field of power distribution network regulation and control, in particular to a power distribution network intelligent regulation and control system for high and low voltage power transmission, comprising a global optimization layer module which is responsible for global regulation and control of the whole power distribution network and comprises a global data acquisition unit, a global data processing unit and a global control unit; the regional optimization layer module is used for performing intra-regional optimization regulation and control on the plurality of divided regions according to geographic distribution and load characteristics of the power distribution network, and the regional optimization layer module comprises a plurality of regional data acquisition units, a regional data processing unit and a regional control unit; and the adaptive learning module adaptively optimizes global and regional regulation and control strategies through a machine learning algorithm according to historical data and real-time data in operation of the power distribution network, and the adaptive learning module comprises a data training unit and a model updating unit. According to the invention, the multi-level regulation and control mode can effectively reduce the power loss in the region, and improves the overall operation efficiency of the power grid.

The utility model relates to the technical field of tea garden trimmers, in particular to an electric bilateral trimmer for a tea garden. According to the technical scheme, a storage battery is installed on a rack, a steering shaft is rotatably installed on the rack, a handle is welded to the top end of the steering shaft, a front fork is inserted into the bottom end of the steering shaft, and a front wheel is rotatably installed on the steering shaft through the front fork; trimming blades are slidably installed on the two sides of the rack through a first connecting plate and a second connecting plate, sawteeth are arranged at the bottom ends of the trimming blades, a motor is fixed to the second connecting plate through a support, the support penetrates through the trimming blades and is fixedly connected with the motor, and an eccentric shaft is arranged at the output end of the motor; and the motor stirs the trimming blade through the eccentric shaft, so that the trimming blade performs lifting motion. The electric bilateral trimmer for the tea garden integrates the advantages of maneuverability, stability, flexibility, efficiency, humanization and the like, so that the electric bilateral trimmer for the tea garden is more suitable for complex trimming requirements in a tea garden environment.

The invention discloses a chemical building pipeline installation construction platform, and relates to the technical field of chemical building pipeline installation, the chemical building pipeline installation construction platform comprises a mobile platform, a processing table and a hydraulic cylinder 1; and the clamping device comprises an I-shaped plate, a clamping frame, a placement table, a clamping plate, an S-shaped rod, a fixing frame, a clamping rod, a fixing rod, a connecting block, an operation plate, a first fixing shaft, a linkage sleeve rod, a second fixing shaft and a limiting block. Then the output end of a first hydraulic cylinder moves downwards and drives a clamping plate to move till the pipeline is clamped, preliminary clamping of the pipeline is achieved, the stability in the pipeline welding project is improved, a clamping rod moves in the direction away from a fixing frame under the action of an S-shaped rod till the pipeline is clamped, and the pipeline is clamped; and the stability in the pipeline welding process is further improved, the welding quality is improved, and defects are reduced.

The invention belongs to the technical field of biomedical engineering and microfluidics, and particularly discloses a vascularized organ chip and method for large-scale culture, the vascularized organ chip comprises an upper runner layer and a lower culture layer, and the runner layer and the culture layer are fixedly sealed; a liquid storage pipe matched with the flow channel layer is adhered to the upper surface of the flow channel layer; according to the vascularized organ chip, the flow channel layer is used for pouring a culture solution to provide fluid stimulation and nutrients for cells; the three parallel-connected large-scale culture chambers of the culture layer are used for culturing cells, so that blood circulation of a microvascular system in a human body can be simulated, and a microenvironment in tissues can be reproduced more truly; meanwhile, the requirement for culturing a large number of tissue cells through the chip can be met, and the cell yield and the experiment scale can be effectively increased.

The invention provides a motor vibration noise control method and system based on modal resonance frequency prediction, and belongs to the field of motor control. The method comprises the following steps: acquiring each order of intrinsic mode frequency of the permanent magnet motor; a cost function parameter, a current constraint condition and a control target are set, and a model prediction control method is adopted to drive an inverter to operate, specifically, the current operation state quantity of the permanent magnet motor is collected; predicting a state response in a future finite time domain based on the operation state quantity; constructing a value function, and evaluating and optimizing a state change result; and selecting an optimal voltage vector, generating a pulse signal to drive an inverter to execute, obtaining a motor high-frequency electromagnetic force wave distribution condition, comparing the motor high-frequency electromagnetic force wave distribution condition with the intrinsic mode frequency of the permanent magnet motor, and optimizing an optimal voltage vector selection logic. The problems that harmonic waves are concentrated and resonance is easily caused by a fixed switching frequency modulation method in the prior art, and a passive suppression method is high in cost and poor in flexibility are solved.

The invention relates to the technical field of garment matching recommendation, in particular to a garment matching recommendation method and system based on big data. The method comprises the following steps: acquiring clothes browsing historical data and input body type data of a user on an e-commerce platform, and performing clothes type grouping to obtain clothes type time sequence grouping data; on the basis, color and version information of different garment types is extracted, color-version data between the garment types is generated, the matching effect of the user body type and the version of the different garment types is analyzed according to the data, and matching proportion segmentation effect data is obtained. Secondly, optimizing the visual geometric gravity center deviation to obtain optimized geometric gravity center deviation data; and designing a personalized clothing recommendation strategy in combination with geometric gravity center deviation optimization data and matching effect data, thereby realizing accurate clothing matching recommendation. According to the invention, the garment matching recommendation technology is optimized, so that the garment matching recommendation technology is more accurate.

The invention relates to an enterprise collaborative office management method and system, and relates to the technical field of enterprise management, and the method comprises the steps: obtaining resource use data in enterprise office; analyzing the resource use data through a threshold judgment model, and when the value of the resource use data exceeds a preset threshold, executing a resource allocation algorithm to minimize the total resource allocation deviation and load imbalance; in response to completion of execution of the resource allocation algorithm, sending an adjustment instruction to the cloud resource management platform, and adding resource allocation to the server of the enterprise; obtaining and analyzing workflow data of an enterprise, and identifying project delay factors to obtain a corresponding analysis result; according to the analysis result, executing a workflow adjustment algorithm to minimize task delay and task load imbalance; and analyzing the event mode in the working data flow, and executing an event response algorithm to optimize the event mode so as to maximize the event response efficiency and the resource utilization rate. The office management effect of an enterprise system can be improved.

The utility model belongs to bicycle lighting technical field, specifically disclose a kind of bicycle safety tail light with radar monitoring and camera function.The utility model includes tail light body, the side of tail light body is equipped with monitoring component and warning component, monitoring component includes camera module and radar module, camera module and radar module are used to real-time monitoring bicycle rear road condition, warning component includes lampwick and COB light source, the side of tail light body is equipped with lens body, through radar module in monitoring component real-time acquisition rear 200m vehicle data and synchronous code table, let rider can perceive incoming car without turning back, avoid distraction and imbalance, and through camera module whole process record road condition, can provide evidence for accident and be used for sharing, simultaneously through warning component through 300LM highlight flickering light and high-transmittance lens, form wide-angle warning range at night or in bad weather, let rear vehicle clearly see rider, make it concentrate on riding, guarantee safety.

The present invention relates to the technical field of medical equipment, and discloses a hyperbaric oxygen device, including a hyperbaric oxygen chamber body and a patient transfer mechanism, a door frame is provided with a threshold, a pressurized oxygen supply assembly includes an oxygen supply valve, a circulation valve and a replacement valve connected to the hyperbaric oxygen chamber body through a flange with a one-way flow, the oxygen supply valve is connected to the circulation valve, and the replacement valve is connected to the atmosphere, and the patient transfer mechanism includes a bed body and an obstacle crossing unit, the obstacle crossing unit includes an obstacle crossing arm rotatably arranged on the bed body, the obstacle crossing arm includes a first support leg and a second support leg, and a track is rotatably arranged between the first support leg and the second support leg. Through the design of the obstacle crossing arm and the rotating track on the bed, the threshold can be easily crossed, friction can be reduced, the pressure on the bed can be reduced, the transfer safety can be guaranteed, the burden on medical staff can be reduced, the stability and safety of the patient can be ensured, and the risk of transportation can be avoided. The valve provided on the hyperbaric oxygen chamber is used for replacement, the loss of high-purity oxygen can be reduced, and the accumulation of waste gas can be reduced.

The utility model relates to a feeding dredging device for quartz sand production, which comprises a feeding pipe, wherein a feeding hopper is arranged at the upper end of the feeding pipe; sliding holes are formed in the left end and the right end of the peripheral wall of the feeding pipe, movable plates are symmetrically arranged in the left portion and the right portion of the feeding pipe, the two movable plates are arc-shaped plates with opposite protrusions, transverse rods are connected to the opposite side faces of the two movable plates, and the free end of each transverse rod penetrates through the corresponding sliding hole in the same side; bearing plates are fixedly arranged on the outer wall of the feeding pipe on the upper side and the lower side of the sliding hole in a sleeving mode, rotating rods are rotationally connected between the left portions and the right portions of the opposite faces of the two bearing plates, the lower portion of the left rotating rod is in threaded connection with a left transverse rod through first external threads, and the lower portion of the right rotating rod is in threaded connection with a right transverse rod through second external threads; the first external thread and the second external thread are opposite in thread rotation direction. And a driving piece is arranged on the feeding pipe and is used for driving the two rotating rods to rotate anticlockwise or clockwise in the same direction. According to the utility model, the problem that quartz sand raw materials are easily blocked in the feeding channel is solved.

The invention relates to an automobile aluminum alloy front steering knuckle which comprises a steering knuckle body, a weight reduction cavity is formed in the steering knuckle body, and at least one sand discharging hole communicated with the weight reduction cavity is formed in the steering knuckle body in a penetrating mode. The two ends, corresponding to the length direction, of the steering knuckle body are bent in the opposite directions to form bent structures, one bent structure is formed by bending one end of the steering knuckle body towards the upper side, and the other bent structure is formed by bending the other end of the steering knuckle body towards the lower side. And the two bending structures are fixedly connected with reinforcing rib structures. By the adoption of the technical scheme, the technical problems that an existing front steering knuckle is heavy in weight and relatively high in manufacturing cost can be solved.

The invention relates to the technical field of disc type motors, in particular to an ultra-thin disc type motor for electronic products, which comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through a buckling connecting piece, a circular connecting plate is mounted in the lower shell, the circular connecting plate is connected with the lower shell through an abutting positioning piece, and the upper shell and the lower shell are fixedly connected through a fastening connecting piece. A circular connecting plate is installed on the lower shell, a lower rotor disc is rotatably installed on the circular connecting plate, an alignment assembly is installed in the lower shell, one end of the alignment assembly is connected with the circular connecting plate, the alignment assembly is used for aligning the lower rotor disc to the center position in the lower shell, an annular adjusting groove is formed in the bottom of the lower shell, and a position-adjustable fixed connecting assembly is installed in the annular adjusting groove; according to the invention, accurate positioning and stable installation of internal components of the motor can be ensured, the operation precision and reliability of the motor are improved, the problem of rotor deflection or imbalance is avoided, the operation performance and stability of the motor are further improved, and the motor can adapt to the requirements of different application scenes.

The utility model discloses an adjustable settlement deformation well lid which comprises a lap joint structure, a rotating shaft structure and a positioning structure, wherein the lap joint structure is installed on the inner side of a well lid frame and used for erecting a well lid body, the rotating shaft structure enables a well lid structure to achieve lifting adjustment in the well lid frame, and the positioning structure is used for locking the well lid body after the well lid body is covered. When the well lid is used and the well lid body is higher than the surrounding ground due to settlement of the ground, a cross screwdriver or an electric drill is used for rotating a first screw rod through a first cross hole to enable a first lifting block to slide downwards in a first lifting groove, so that a step of a lap joint structure slides downwards, and meanwhile, a second screw rod is rotated through a second cross hole to enable the first lifting block to slide downwards. And the second lifting block and the rotating shaft slide downwards, so that the whole well lid body is driven to descend until the well lid body is lower than the surrounding ground, the function that the height of the well lid is automatically adjusted along with ground subsidence is achieved, potential safety hazards caused by the fact that the well lid protrudes out of the ground are effectively avoided, and the road flatness and the safety of pedestrians and vehicles are improved.

The invention relates to a valve (20) having a valve housing (2), at least one piston (3) and at least one spring (5), the valve having the following features: the piston (3) and the valve housing (2) are arranged coaxially with respect to one another on an imaginary valve axis (6), the valve axis (6) being oriented axially in a first axial direction and in a second axial direction opposite to the first axial direction, the piston (3) being received in the valve housing (2) in an axially displaceable manner against the spring force of the spring (5), and a first opening (8) of the valve housing (2) through which a flow medium can pass faces axially towards the piston (7) and can be closed by the piston (3), wherein at least one ring (14) surrounding the valve axis (6) is fixed to the first opening (8) and at least one seal (15) is held against the valve housing (2) by means of the ring (14). The invention also relates to a device (37) for regulating the pressure of a flow medium in a vehicle transmission and to a device for fixing a pressure compensation valve (1).

This invention discloses a double-casing silent generator, relating to the field of generators. It includes a base shell, a control gate fixedly connected to the outer surface of the base shell, rubber sleeves evenly distributed on the outer surface of the base shell, a starting mechanism fixedly connected to the right end of the inner wall of the base shell, a generator mechanism fixedly connected to the outer surface of the starting mechanism, a water-cooling mechanism fixedly connected to the top of the generator mechanism, a relay fixedly connected to the end of the base shell near the generator mechanism, and a double-casing shell on the top of the base shell. Handles are symmetrically arranged at both ends of the double-casing shell. The starting mechanism operates first, heating and pressurizing the intake air to drive the generator mechanism and generate electricity. Simultaneously, the water-cooling mechanism cools the heated air and absorbs the noise generated by the starting and generator mechanisms.

The utility model discloses a negative-pressure inflatable object taking bag for a pleuroperitoneoscope. The negative pressure inflatable thoracic and laparoscopic object taking bag comprises a sealing film bag, the sealing film bag is provided with a sealing bag opening, a bag opening empty groove is formed in the sealing bag opening, a medical catheter is arranged in the bag opening empty groove, and a fixator is fixedly installed at one end of the medical catheter. The pleuroperitoneoscope fetching bag instrument is inserted into a small incision to be introduced into a body cavity, thrust generated by the controllable negative pressure inflation device is used, the negative pressure inflation device pushes the guide rod, then the sealing film bag and the medical catheter are pushed out of the medical steel pipe, and the medical catheter slowly stretches and unfolds through the elasticity and flexibility of the medical catheter. And the sealing film bag extends along with the medical catheter, so that the problem that external gas is inflated into the fetching bag to extend is effectively solved, and the external gas is prevented from possibly injuring the interior of a human body.

The invention relates to the technical field of artificial intelligence and financial science and technology, and discloses a lease execution scheme analysis method, device, equipment and medium, and the method comprises the steps: obtaining the rent attribute data, and extracting the cash flow in the rent attribute data and the rent payment date corresponding to the cash flow; calculating a first cash analysis value corresponding to the cash flow according to the cash flow and the rent payment date, and determining a cash flow initial value according to the first cash analysis value; calculating a first income analysis value according to the cash flow initial value and a predetermined iterative formula; generating a constraint function according to the rent attribute data, and constraining the first income analysis value by using the constraint function to obtain a second income analysis value; and obtaining a repayment condition of the target user, and generating a lease execution scheme according to the second income analysis value, a predetermined monthly interest rate and the repayment condition. According to the invention, the efficiency of lease execution scheme formulation and execution processes can be improved.

The utility model provides a battery cell and a battery pack, the battery cell comprises a shell, a roll core and a cold plate, and the roll core and the cold plate are accommodated in the shell; the roll core comprises a positive pole piece, a first isolating membrane, a negative pole piece and a second isolating membrane which are sequentially stacked, the roll core is wound along the outer surface of the cold plate, and the cold plate is located on the side, away from the negative pole piece, of the second isolating membrane; the cold plate is used for exchanging heat with the roll core, the interior of the cold plate comprises a first cavity, and the first cavity is used for containing a heat exchange medium. According to the battery cell and the battery pack provided by the embodiment of the invention, the heat exchange effect of the battery cell can be improved, and the use safety of the battery cell is improved.

This utility model discloses a wheelchair with a self-balancing structure, relating to the field of wheelchair technology. It includes a support rod with large wheels rotatably mounted on both sides. A fixed plate is fixedly connected to the top surface of the support rod, and two first fixed brackets are fixedly connected to one side of the top surface of the fixed plate. A seat cushion is mounted on the top surface of the fixed plate, and one side of the seat cushion is rotatably connected to the two first fixed brackets. A connecting rod is fixedly connected to one side of the support rod, and a shock-absorbing bracket is rotatably connected to the end of the connecting rod. Small wheels are mounted between the bottom of the shock-absorbing brackets. A second fixed bracket is fixedly connected to the top surface of the connecting rod, and an electric push rod is rotatably connected between the second fixed brackets. In this utility model, sensors can detect the tilt angle of the wheelchair in real time. Through the cooperation of the sensors, electric push rods, and other components, the angle of the seat cushion can be adjusted in real time to ensure that the seat cushion remains level with the ground, preventing the user from slipping or losing balance due to wheelchair tilting, thus enhancing the safety of wheelchair use.

This invention discloses a method and system for elastic resource orchestration in a distributed intelligent parallel simulation engine. The method includes the following steps: dynamically marking time periods based on the predicted load state parameters of each simulation process in each subsequent simulation period, obtained from the dynamic load prediction of simulation data generated by each simulation process within each simulation period in the distributed simulation simulation system; dynamically setting and optimizing scheduling instructions based on the dynamic time period marking results and simulation event rules, and executing the dynamically set scheduling instructions after sorting them based on the topological constraint characteristics of the distributed simulation simulation system; and dynamically handling faults based on the container status parameters of each simulation container during the simulation process, and based on the container status assessment results and fault types. Through dynamic load prediction and intelligent scheduling, the periodic peak resource demand in distributed simulation is effectively smoothed, significantly improving overall resource utilization.

The utility model discloses a rotational flow feed liquid distributor, relates to high-speed atomizer component technical field, including main shaft, distribution seat, shell and distribution block, main shaft passes through said distribution seat and distribution block, the distribution seat is equipped with feed inlet and distribution cavity, the distribution seat and distribution block end face attach tightly, the shell is equipped with the feed inlet and the distribution cavity, and the distribution block is equipped with the feed inlet and the distribution cavity. The distribution block is provided with a spiral groove distributed in the circumferential direction, the distribution cavity is communicated with the spiral groove, the other end face of the distribution block is provided with a tightening nut used for fastening, and the shell, the distribution block and the tightening nut form a flow channel. The technical problem to be solved by the utility model is to provide the rotational flow feed liquid distributor which improves the blanking uniformity, effectively reduces the impact force and enhances the operation stability and reliability.

The utility model relates to an anti-blocking device for a ball mill, which comprises a feeding pipe, a limiting ring, an arc plate and a transmission part, limiting rings are fixed to the upper end and the lower end of the inner wall of the feeding pipe correspondingly, an upper annular groove and a lower annular groove are formed in the opposite faces of the two limiting rings correspondingly, openings of the upper annular groove and the lower annular groove are opposite, and arc plates are arranged in the left portion and the right portion of the feeding pipe correspondingly. The upper end of the arc plate on the left side extends into the left portion of the upper annular groove in a sliding mode, the lower end of the arc plate on the left side extends into the left portion of the lower annular groove in a sliding mode, and the adjacent side edges of the two arc plates make contact with each other. The left and right ends of the gear I are respectively meshed with the left and right racks; the first gear is driven by a driving piece to rotate anticlockwise or clockwise. The utility model solves the problem that the proppant raw material is easy to block in the feed pipe of the ball mill when the proppant raw material is crushed.

The utility model discloses a low-noise fan impeller for a gas water heater, which is assembled in a volute connected with a motor and comprises a first fixing plate, a second fixing plate and a plurality of impeller blades. The impeller blades are assembled between the first fixing plate and the second fixing plate, and vortex eliminating holes used for eliminating vortex are formed in the second fixing plate. The impeller of the fan is assembled in the volute connected with the motor, so that the impeller can stably and efficiently rotate under the driving of the motor; due to the design of the volute, airflow can be guided, the air volume and the air pressure can be improved, and noise can be reduced; the first fixing plate and the second fixing plate enable the impeller to be kept stable during rotation and not prone to deformation or damage; the vortex eliminating holes are formed in the second fixing plate, so that vortex formation can be effectively destroyed, noise is reduced, and the performance of the fan is improved.

The utility model discloses a high-altitude throwing automatic identification device for property management, which comprises a mounting plate and a protective cover, the outer surface of the mounting plate is provided with a first limiting mechanism, the outer surface of the mounting plate is fixedly connected with a mounting seat, and the inner wall of the mounting seat is provided with a second limiting mechanism. The first limiting mechanism, the mounting base, the second limiting mechanism and the mounting frame are arranged to be matched with a guide plate and a sliding rod, limiting of the protective cover can be quickly relieved through the first limiting mechanism, then a worker can put down the protective cover through the action of the guide plate and the sliding rod, and the protective cover cannot fall off under connection of the guide plate and the sliding rod; and the mounting rack can be quickly taken down by using the second limiting mechanism, so that the camera body can be quickly taken down, the overall disassembly and assembly are simple and convenient, the worker can be prevented from carelessly or losing balance when operating at a high place for a long time, and the safety is improved.

The application discloses a robot self-evolution cleaning path planning method based on a dust deposition dynamics model, and belongs to the technical field of intelligent cleaning robot path planning, and comprises the following steps: ground material identification is performed on a cleaning area, and the cleaning area is divided into material subareas, and a deposition characteristic parameter group containing a cementation critical thickness value and a cementation sensitive coefficient is constructed; dust deposition thickness of each subarea is acquired based on a dust sensor, a cementation risk value is calculated, and a preventive priority cleaning area is determined; a path node execution sequence is dynamically adjusted according to the cementation risk, and a robot advancing speed and a suction force gear position are adaptively adjusted; after cleaning is completed, a cleaning efficiency feedback is constructed through a dust thickness difference before and after cleaning, the deposition characteristic parameter group is iteratively corrected, and model self-evolution updating is realized. The application can realize prospective identification and dynamic regulation and control of dust cementation risk, and improve the intelligence of path planning and cleaning operation efficiency.

The invention provides a magnetic shoe framework and a rotor, the magnetic shoe framework comprises a plurality of magnetic shoe grooves and a connecting bridge, one ends of the plurality of magnetic shoe grooves are opposite and abut against each other in pairs, and the other ends of the plurality of magnetic shoe grooves extend along the radial direction; the connecting bridge is connected with the bottom ends of the two adjacent magnetic shoe grooves, the connecting bridge comprises at least two bridge bodies, and the two bridge bodies are fixedly connected with different positions of the bottom ends of the two adjacent magnetic shoe grooves at intervals respectively; during assembly, one side of the iron core abuts against the connecting bridge. Every two adjacent magnetic shoe grooves are fixedly connected through the corresponding connecting bridge composed of at least two bridge bodies, when the magnetic shoe framework is pressed into the iron core, the magnetic shoe grooves are synchronously pressed into the iron core, and the positions of the multiple magnetic shoe grooves are fixed, so that the distances between the magnetic shoes are the same, and therefore the magnetic shoe framework can be pressed into the iron core synchronously. Therefore, the phenomena of magnetic circuit imbalance and dynamic imbalance of the rotor caused by deformation of the iron core and non-uniform position distribution of the magnetic shoes are avoided, and the quality of the rotor is improved.

The present application relates to the technical field of vehicle oil measurement, and particularly relates to a vehicle oil measurement device and a measurement method, which comprises an oil tank, a cleaning seat fixedly connected to the oil tank, a rotating cover rotatably connected to the cleaning seat, an oil measurement mechanism fixedly connected to the rotating cover, a floating ball wiper arranged in the cleaning seat, a transmission mechanism rotatably connected to one side of the floating ball wiper, a liquid pumping seat fixedly connected to the cleaning seat, a pressing mechanism rotatably connected to the cleaning seat, and a liquid discharging valve fixedly connected to the outer end of the cleaning seat. In the process of measuring the oil in the vehicle oil tank by the floating ball, the floating ball wiper can effectively wipe the surface of the floating ball, remove the attached dirt, avoid the blockage or movement imbalance of the floating ball caused by oil stains, ensure the free movement of the floating ball in the oil tank, thereby improving the accuracy and reliability of the oil measurement, and prolonging the service life of the floating ball and related components.

The utility model relates to the technical field of automobile cooling, and discloses an automobile cooling liquid kettle which comprises a mounting plate, the middle of the upper surface of the mounting plate is fixedly connected with a cooling liquid kettle body, and the lower end of the outer wall of one side of the cooling liquid kettle body is connected with a water return pipe in a penetrating mode. According to the automobile cooling liquid kettle, when the automobile cooling liquid kettle is used and high-temperature pressure generated in the automobile cooling liquid kettle changes along with the change, a set threshold value is reached through the pressure sensor, an electric signal is sent to the electric control valve, and steam generated in the pipeline is conveniently conveyed to the outside through the steam leakage pipe by opening the electric control valve; according to the cooling liquid kettle, part of steam can be conveniently conveyed to the outside from the air outlet through the circulation hole, the steam can be discharged more uniformly, the problems of unbalanced pressure and unsmooth flow possibly caused by concentrated exhaust at one position are avoided, the steam in the cooling liquid kettle can be discharged, and then poor work of a cooling system caused by too high pressure of the system is prevented, and the service life of the cooling liquid kettle is prolonged. Therefore, the system pressure is balanced.

The utility model discloses a building construction trolley which comprises a trolley hopper, wheel shafts are rotatably installed on the two sides of the trolley hopper, wheels are fixedly installed on the wheel shafts, annular pieces are fixedly installed on the side faces of the wheels, a plurality of limiting holes distributed in a circumferential array mode are formed in the annular pieces, and a plurality of locking assemblies distributed in a circumferential array mode are arranged on the outer side of the trolley hopper. The locking assembly comprises a block body, the block body is fixedly installed on the outer side of the car hopper, the block body is powered on through an electromagnet, the electromagnet can exert repulsive force on the magnet, the magnet moves and enables the first spring to be stretched, therefore, the plug pin and the magnet move synchronously, the end of the plug pin can be inserted into the limiting hole, the annular piece can be limited and locked, and the wheel is in a braking state. In the uphill process, the wheels are braked through the locking assemblies, the balance of the trolley can be kept when a worker is exhausted, the trolley is prevented from sliding down along a ramp, and the trolley is prevented from being out of control and losing balance.