87results about How to "Avoid stalling" patented technology

The utility model discloses an anti-icing refrigerator air door, which is characterized in that an air door driving motor is configured to have a third mode, and in the third mode, when an air door blade closes an air door through hole, an output shaft of the air door driving motor drives the air door blade to repeatedly swing slightly relative to the air door through hole; therefore, water attached between the air door blade and the air door through hole is effectively prevented from freezing and bonding the air door blade and the air door through hole, and the problem that in the prior art, when the air door through hole needs to be opened, an air door driving motor cannot drive the air door blade to be opened is solved. The technical scheme is different from the technical scheme that in the prior art, normal opening of the air door blades is guaranteed in a heating mode, so that the scheme is more energy-saving, it is effectively guaranteed that the refrigerating chamber can supply cold air in time for preservation, and meanwhile the service life of the air door driving motor is prolonged.

The invention discloses a method, device and equipment for avoiding engine flameout and a storage medium, and the method comprises the steps that the clamping stagnation state of a mixing valve is judged according to the current target opening degree and the actual opening degree; according to the clamping stagnation state of the mixing valve, PID control calculation is conducted on the opening degree error between the current target opening degree and the actual opening degree; and when it is judged that the mixing valve is opened in the stable clamping stagnation state, an integral item of PID control over the opening degree error is reset so as to avoid engine flameout. The method aims at solving the problems that in the prior art, due to the fact that a mixing valve of a low-pressure EGR system forms duty ratio overshoot when the mixing valve is opened due to clamping stagnation, the mixing valve is fully closed, external air does not enter an air cylinder, and an engine flames out or shakes, the method can effectively recognize that the mixing valve enters the clamping stagnation opening state from the clamping stagnation state, and the working efficiency of the low-pressure EGR system is improved. PID control adjustment is carried out on the mixing valve, and the problems of engine flameout and jittering caused by overshoot of the mixing valve are solved.

An air heater for drying an aluminum plate comprises a hot air box body and a flame heating machine arranged at an opening in one end of the hot air box body, an air draft assembly capable of sucking away heating gas generated by the flame heating machine is arranged in the hot air box body, and the flame heating machine is arranged at the opening through a fixing plate. The flame spraying end of the flame heating machine penetrates through the fixing plate and extends into the hot air box body, an air blower is arranged on the hot air box body, the blowing end of the air blower is communicated with the interior of the hot air box body through a pipeline, the side, facing the hot air box body, of the fixing plate is covered with a windproof cover with openings in the two ends, and open holes are evenly formed in the peripheral side of the windproof cover. Flame ejected by the flame heating machine is completely located in the hot air box body, the flame ejection position of the flame heating machine is covered through the wind shielding cover, the situation that the air draft assembly influences work of the flame heating machine is avoided, meanwhile, a combustion-supporting air blower is further arranged at the flame ejection position of the flame heating machine, and therefore the flame heating machine can be used for heating the flame. Oxygen is provided for burning flames, and flameout caused by oxygen deficit is avoided.

This invention provides a cup assembly for a food processor, including a cup body, a cup lid, and a processing component disposed within the cup body. It also includes a gearbox, which comprises a movably disposed clutch output shaft. When the clutch output shaft moves to a first position, it drives the processing component to output a first rotational speed; when the clutch output shaft moves to a second position, it drives the processing component to output a second rotational speed. The cup lid is installed in place, maintaining the clutch output shaft in either the first or second position. Furthermore, a food processor with the aforementioned cup assembly is provided. In the first position, the clutch output shaft outputs a first rotational speed to adapt to multi-functional cooking; in the second position, it outputs a second rotational speed to adapt to another multi-functional cooking method requiring a different speed. By changing the position of the clutch output shaft, the processing component can be replaced and the rotational speed can be automatically switched. Moreover, the output speed range is wide and the torque is high, avoiding stalling caused by high processing resistance.

The present invention belongs to the technical field of underwater environmental monitoring, and specifically relates to an underwater robot for pollution tracing, comprising a body located underwater and a hull floating on the water, a winding mechanism being provided on the hull for automatically retracting and releasing cables connected to the body, the body controlling the depth and movement direction in the water respectively through longitudinal propellers and transverse propellers, a protective mesh cover and a transverse protective member being provided on the body to prevent debris in the water from entangled in the propellers, and in addition, a direction-changing limit ring, a direction-changing head and a baffle are designed at the connection between the body and the cable to relieve stress and prevent damage to the cable. The present invention has a reasonable structure and can operate stably and efficiently in a complex underwater environment, effectively solving the problems of inaccurate positioning, limited movement, easy entanglement of propellers with debris and easy damage of cables in the prior art.

The invention relates to the technical field of vehicle seat control, and discloses a vehicle seat adjusting method and device and a vehicle. The method comprises the steps that a first seat adjusting instruction containing a first adjusting direction is received, determining first Hall position information of the vehicle seat at the next adjustment moment according to the initial Hall position information of the vehicle seat and the first adjustment direction; when the first adjusting direction comprises at least one of the preset interference directions, whether the vehicle seat reaches the preset interference position at the next adjusting moment or not is determined according to the first Hall position information; when the preset interference position is not reached, a first limit position corresponding to the first adjusting direction is obtained; and when it is determined that the vehicle seat does not reach the first limit position at the next adjustment moment according to the first preset Hall position information, the first seat adjustment instruction is executed. Interference between the vehicle seat and peripheral components in the adjusting process is avoided, the user experience is improved, and the internal space of the vehicle is fully utilized.

The invention relates to the field of clutch control, and discloses a clutch execution control method, which comprises the following steps of: performing CAN (Controller Area Network) communication between a gearbox controller and an engine controller, an anti-lock braking system and an instrument, and acquiring information such as the rotating speed of an input shaft, the rotating speed of an output shaft, oil temperature, a gear sensor, a pedal displacement sensor and a driving mode of a gearbox sensor; the following functions are achieved: a driver can control the clutch to be opened and closed through hand pinching in a manual mode. In the automatic mode, smooth starting can be completed without operating a clutch, and the clutch is automatically opened at a low rotating speed to avoid flameout of an engine. In the automatic mode, smooth and fast gear shifting can be completed only by operating a gear shifting rod without operating a clutch, gear shifting can be achieved without closing an accelerator, and galloping of an engine is avoided. In the automatic mode, a driver can open the clutch at any time through hand pinching, and intervention on a transmission chain at any time is achieved. In the automatic mode, the TCU can remind a driver that the gear is too low or too high.

The invention discloses a load self-adaptive waste gas torch ignition device and a control system, relates to the technical field of torch ignition devices, and is mainly used for coping with combustible waste gas load fluctuation scenes in the industrial production process, realizing stable and efficient combustion of waste gas and avoiding resource waste and environmental pollution. Specific to a gas inlet mode in a high-pressure / low-pressure gas channel, self-adaptive actions are performed according to gas pressure fluctuation, and the actions comprise that a rotary encoder of an action fine adjustment assembly indirectly feeds back gas flow of the low-pressure / high-pressure gas channel by detecting the rotating speed of a transmission rod and combines initial gas pressure, a waste gas pressure change value and gas flow data, so that the gas flow is adjusted. The micro-drive motor is controlled to drive the transmission rod to rotate, the first transfer gas sheet drives the high-pressure gas channel forward / reverse gas sheet to rotate directionally, the overlap ratio of eccentric gas ports of the gas sheets is changed, the higher the overlap ratio is, the smaller the gas flow resistance is, the higher the gas pressure is, and otherwise, the smaller the gas pressure is, precise adjustment of the gas pressure of the high-pressure gas channel is achieved, and waste gas load changes are adapted.

The application provides a hydraulic torque converter control method and device, and belongs to the field of automobile gearbox control. When current vehicle parameters meet preset conditions, especially when the current vehicle speed is within a preset vehicle speed range, the clutch in the hydraulic torque converter is controlled to switch to a sliding friction state, that is, a semi-linked state. In this state, the engine can stop fuel injection, and the engine can also be prevented from stalling due to low wheel speed dragging the engine or the engine losing connection with the wheels. In summary, the engine can continue to be fuel cut on the basis of avoiding engine stall, the fuel cut time is prolonged, and oil consumption is further reduced.

The utility model relates to the field of aircraft technology, concretely relates to a double rotor drive arrangement and cruising helicopter, and double rotor drive arrangement includes first drive module, second drive module and rotor module, first drive module includes first main drive subassembly and first auxiliary drive subassembly, and first main drive subassembly includes first main input shaft and first output shaft of transmission connection, and first auxiliary drive subassembly includes and first auxiliary input shaft of coaxial line with first main input shaft and reverse rotation, and second drive module includes second main drive subassembly and second auxiliary drive subassembly, and second main drive subassembly includes second main input shaft and second output shaft of transmission connection, and second auxiliary drive subassembly includes and second auxiliary input shaft of coaxial line with second main input shaft and reverse rotation, and rotor module includes the first rotor and second rotor of being able to overturn. The utility model can realize reverse torque self -balancing and flight mode conversion simultaneously, thereby simplifying transmission chain and control system, break through traditional speed barrier.

This invention provides an organic substrate preparation device and method suitable for rose cultivation, relating to the field of organic substrate preparation technology. The device includes a telescopic mechanism comprising a bidirectional mechanism and a driving mechanism. The telescopic mechanism provides not only circumferential stirring torque but also vertical mixing torque, thus ensuring thorough mixing of the organic matter in multiple directions. The bidirectional mechanism generates irregular vertical movement in response to circumferential stirring, further enhancing the vertical mixing of the organic matter and achieving multi-dimensional composite stirring. This significantly improves mixing uniformity and fermentation efficiency. The invention utilizes a unique spatial linkage (side rod, inner / outer ball sleeve) and flexible transmission (unidirectional mechanism) design to intelligently decompose the unidirectional rotation of the driving shaft into a superposition of circumferential revolution and axial reciprocating motion of the stirring components (upper / lower stirring sleeves).

The invention discloses an idling start-stop control method based on navigation traffic information, which comprises the following steps: when a vehicle is in a navigation state, a start-stop forbidding judgment module acquires traffic information of an intersection in front of a planned driving path in real time, including a signal lamp state, lamp changing remaining time and a distance to a stop line; when the vehicle approaches the target intersection, combining the vehicle state and the traffic information, and generating a forbidding request signal of the idle start-stop system through judgment logic; the power control execution module executes a final control action for forbidding automatic flameout of the engine based on the forbidding request signal. According to the invention, the problems of unnecessary start and stop and influence on driving smoothness and energy consumption caused by incapability of accurately associating path-related signal lamps and passing scenes in the prior art are solved, intelligent cooperative control of the idle speed start and stop system based on navigation information is realized, and vehicle energy consumption is optimized while driving experience is improved.

The utility model discloses a kind of intelligent padlocks with anti-stalling function, relating to intelligent padlock technical field, including shell, still including separable setting in the side part of shell lock beam, for locking lock beam locking mechanism, for detecting whether the signal contact cover of lock beam is inserted shell, two signal contact covers are respectively separable with the both ends of lock beam contact, controller is arranged in shell, locking mechanism and two signal contact covers are respectively electrically connected with controller.The utility model provides a kind of intelligent padlocks with anti-stalling function, by oil injection hole is injected into lubricating oil in oil groove on linkage frame, while lubricating oil lubricates screw rod, by drain port one, drain port two and drain port three respectively on locking block, containing cover, stabilizer rod simultaneously lubricate multiple places, effectively prevent the stall of intelligent padlock, by the setting of oil storage cavity, for oil channel long-acting oil supply, further avoid the stall of intelligent padlock, the use of intelligent padlock is more stable and reliable.

The application discloses a catheter driving device in a vascular interventional operation, which comprises an execution assembly and a power assembly. The execution assembly comprises a shell with a bottom-closed accommodating cavity and a Y-shaped connecting valve arranged in the accommodating cavity. The Y-shaped connecting valve comprises a main pipe, a front interface rotatably arranged at the front end of the main pipe and a rear interface rotatably arranged at the rear end of the main pipe. A catheter is fixedly arranged on the front interface. The execution assembly further comprises a first auxiliary magnetic force wheel fixedly connected with the front interface and a second auxiliary magnetic force wheel fixedly connected with the rear interface. Both the first auxiliary magnetic force wheel and the second auxiliary magnetic force wheel are arranged in the accommodating cavity. The power assembly is arranged outside the accommodating cavity and is isolated from the accommodating cavity. The power assembly comprises a first main magnetic force wheel in spaced transmission connection with the first auxiliary magnetic force wheel, a first motor, a second main magnetic force wheel in spaced transmission connection with the second auxiliary magnetic force wheel and a second motor. The driving device can avoid leakage and pollution of the motor and locked-rotor of the motor during the operation process, and can reduce the operation risk.

The invention discloses a self-adaptive control method for a low-carbon multi-fuel internal combustion engine based on fuel activity online identification, which comprises the following steps of: acquiring a pressure signal in a cylinder and a crank angle signal, calculating an instantaneous apparent heat release rate, and extracting waveform topological characteristics of the heat release rate; inputting the extracted heat release rate waveform topological features into the trained fuel activity mapping model to obtain an equivalent reaction activity index of the current mixed fuel; based on the equivalent reaction activity index, dynamically interpolating in a map database or switching to a corresponding reference control strategy, determining a basic value of a control parameter under the current working condition, and performing closed-loop increment correction on the control parameter based on the deviation between the current combustion parameter and a target parameter to obtain a correction value, and performing one-cycle control by taking the sum of the basic value and the correction value as a final value of the control parameter. The invention further discloses a corresponding control system. The combustion stability of the internal combustion engine under the multi-fuel variable working condition can be ensured without knowing the specific fuel type.

The invention relates to an optimization method for optimizing the thermal engine speed (30) of an automatic gearbox (32) type vehicle during a transfer, for implementing an optimization device (1) in communication with an engine control module (2) and a clutch control module (5), said method comprising a step in which real-time engine speed information (RMTH) is provided by the engine control module (2) to the optimization device (1), another step in which the real-time engine speed information (RMTH) is compared by the optimization device (1) with engine speed setpoint information (CRM), and yet another step in which, in the event of a mismatch between real-time engine speed (RMTH) information and engine speed setpoint (CRM) information, the optimization device (1) transmits a fade factor (FG) to the clutch control module (5) for fading the clutch torque gradient to limit the clutch torque gradient.

The application discloses a kind of ammonia catalytic combustion system and combustion control method, its system includes combustion chamber, catalyst chamber, air chamber and feed pipe;Combustion chamber upper end is equipped with flue gas outlet, lower end surface is fixedly connected bearing plate;Catalyst chamber is installed in the inside of combustion chamber, and the inner wall of combustion chamber and the outer wall of catalyst chamber are enclosed to form combustion space;Catalyst bed is arranged in the inside of catalyst chamber, and a plurality of injection holes are formed in side wall;The inside of air chamber is air cavity, and air inlet is formed in lower end;The bearing plate is penetrated and formed with multiple groups of air flow holes;The feed pipe is inserted into air cavity from the bottom center of air chamber, vertically extends to the top of catalyst chamber, and the top outlet of feed pipe and the top cover between the top of catalyst chamber are reserved ventilation gap.The beneficial effects of the present application are that: combustion chamber, catalyst chamber, air chamber coaxial integrated nested structure, without independent external cracking device, external hydrogen supply system, whole machine height integration, reduce hardware investment and operation cost.

The utility model relates to a fan structure with a foreign matter prevention function, which comprises a shell and a fan arranged in the shell, the shell is provided with an air outlet, an air outlet channel is formed between the air outlet and the fan, the air outlet channel is obliquely arranged, at least one foreign matter port is arranged close to the lower end of the air outlet channel, and the foreign matter port is communicated with the air outlet channel. The foreign matter opening is communicated with the air outlet channel and the outside of the shell, and a plurality of protrusions are arranged on the side, close to the fan, of the foreign matter opening. According to the utility model, the risk that foreign matters enter the fan to cause damage or stalling of the fan can be reduced to a great extent, and meanwhile, the heat dissipation effect is improved.

The utility model discloses an electric hot melting gutta-percha filling instrument, which relates to a dental treatment instrument and comprises a main machine shell and a main machine front shell, the main machine front shell is fixed on the main machine shell in a threaded mode and communicated with the main machine shell, a heating cavity is formed in the main machine front shell, and a motor and a pushing assembly are arranged in the main machine shell. One end of the pushing assembly is fixed to a rotating shaft of the motor, the other end of the pushing assembly extends into the heating cavity, the motor rotates to drive the pushing assembly to stretch out and draw back in the heating cavity in a reciprocating mode, and the motor is controlled by a button switch. And the button switch is fixed on the host shell and is electrically connected with the motor. The gutta-percha injection device has the advantages of being more convenient and labor-saving to operate and more accurate in gutta-percha injection amount control.

The application discloses a vehicle climbing control method, system, double-clutch transmission and vehicle thereof, and comprises the following steps: determining whether the vehicle is in an uphill mode when starting on a slope; in the uphill mode, sending a request instruction for increasing an idle speed to an engine controller according to the size of a slope, an engine intake temperature and a gear position of the vehicle; when the engine speed is in an engine stall risk speed zone, activating a torque limiting function of a clutch; when the engine leaves the engine stall risk speed zone, releasing the torque limitation of the clutch. The application provides a vehicle climbing control method, system, double-clutch transmission and vehicle thereof, and the double clutch is used for climbing control of a small-torque engine or an engine with insufficient idle speed, so that the reasonable calculation of clutch required torque is ensured, the reasonable torque transmission of the clutch is ensured, and the problem of engine speed dragging or even engine stall is avoided.

This application discloses a coal gasification pulverized coal co-firing system and method, solving the technical problems of poor ignition and flame stability of pulverized coal as an inert fuel in existing technologies. The coal gasification pulverized coal co-firing system includes a coal gasification pulverized coal bin, a boiler flue gas assembly, and one or more pulverized coal feeding assemblies. The boiler flue gas assembly includes a boiler, a hot primary air branch, and a hot secondary air branch. The boiler has a furnace, a hot primary air inlet, and a hot secondary air inlet. The hot secondary air branch has a first branch and a second branch. The hot primary air inlet is located below the hot secondary air inlet. The pulverized coal feeding assembly includes a pulverized coal feeding pipe, a pulverizer, an air-coal mixer, and a spray gun. The first inlet of the air-coal mixer is connected to the pulverizer, the second inlet of the air-coal mixer is connected to the first branch, and the mixing outlet of the air-coal mixer is connected to the inlet of the spray gun. The outlet end of the spray gun extends into the hot secondary air inlet and is connected to the furnace. This achieves efficient and stable co-firing of coal gasification pulverized coal in a pulverized coal boiler.

The application belongs to the technical field of gas turbine engines, and provides a combustion chamber with intelligent point flameout and an ignition method, which comprises: a diffuser connected with a machine case; a flame tube is installed in the machine case, the flame tube has a backflow area in the inside, and the backflow area is surrounded by a high-speed shear layer; an ignition system comprises an ignition electrode; when the flame tube is ignited, or when the pressure in the flame tube is lower than a preset value, or when the pressure change rate in the flame tube exceeds a preset range, the ignition electrode moves to the backflow area through the high-speed shear layer. The combustion chamber has an electromagnetic / pneumatic force coupled ignition system, the ignition position is moved from the high-speed shear layer to the backflow area, thereby being beneficial to flame stabilization, the generation probability of an initial flame core can be greatly improved, and due to the fact that the initial flame core is located in the backflow area, the propagation distance of the initial flame core can be significantly shortened or even eliminated, and the engine ignition envelope range can be greatly widened.

The invention discloses an impact tool and a control method thereof. The impact tool includes: a motor; the output shaft is used for outputting torque; the impact mechanism is used for applying impact force to the output shaft; the power switch is used for receiving an operation instruction of a user and controlling the current between the motor and the power supply according to the operation instruction; the controller is used for controlling the operation duty ratio of the motor; the controller is configured as follows: when the impact mechanism applies impact force to the output shaft, the actual load of the output shaft is obtained; and when the actual load is larger than the preset load, the operation duty ratio of the motor is controlled to be adjusted to the target duty ratio at different set rates according to the operation state of the impact tool. By the adoption of the technical scheme, when the impact force generated by the operation instruction input by the user is insufficient, the operation duty ratio of the motor can be increased so as to prevent locked-rotor in the impact process, and the operation stability and the use hand feeling of the user can be improved.

The utility model relates to a transmission structure of a wet-type rod mill. The transmission structure comprises an output motor, a coupler, a pinion device, a bull gear and a barrel body, flanges are arranged at the two axial ends of the barrel, and the large gear is installed at the axial inner end of the flange on one side. The output motor is a permanent magnet motor and is installed on a motor base on the side of the barrel, the coupler is an elastic pin coupler, an output shaft of the permanent magnet motor is connected with the small gear device through the elastic pin coupler, the small gear device at least comprises a small gear meshed with the large gear, and the small gear is meshed with the large gear. The permanent magnet motor can drive the small gear to rotate to drive the large gear and the barrel to rotate. The permanent magnet motor and the elastic pin coupling are adopted to provide torque to drive the rod mill barrel to rotate, power consumption is remarkably reduced, high-inertia load generated when the rod mill is started is easily overcome, impact load and instantaneous vibration of the rod mill barrel are absorbed through the elastic pin coupling, a motor shaft and a transmission system are protected, and the service life of the rod mill is prolonged. The motor bearing life is prolonged.

This invention discloses a tilt-lift short takeoff and landing (STOVL) aircraft and its control method, comprising a fuselage, wing assembly, multi-layered distributed propulsion system, tilt drive assembly, and control unit. The wing is hinged to the fuselage via a pivot in the mid-rear section of the chord, and the tilt drive assembly drives the wing to rotate and adjust the angle of attack. The multi-layered distributed propulsion system includes a first rotor assembly located in the mid-rear section to the wingtip region of the wing and a second rotor assembly located on the lower surface of the wing near the fuselage. During cruise, the first rotor assembly is stopped and feathered, and the propulsion system tilts synchronously with the wing. This invention, through a layered distributed propulsion layout and synchronous wing tilting for synergistic lift enhancement, solves the problems of insufficient control torque at low speeds and high cruise energy consumption, achieving a balance between STOVL performance and cruise economy.

This application provides a vehicle heat exchange module, a vehicle temperature control system, and a vehicle, including at least one of a gas-cooled radiator, a first water pump, a valve, a gas cooling device, an exhaust gas recirculation system, and a cooling medium; the gas-cooled radiator is connected to the first water pump; the first water pump is connected to the valve; the first outlet of the valve is connected to the gas cooling device; the gas cooling device is connected to the exhaust gas recirculation system; the second outlet of the valve is connected to the exhaust gas recirculation system; the exhaust gas recirculation system is connected to the gas-cooled radiator; the gas cooling device is disposed around the vehicle engine; when the valve is in the state of first outlet closed and second outlet open, the cooling medium flows from the first water pump to the valve, from the valve to the exhaust gas recirculation system, from the exhaust gas recirculation system to the gas-cooled radiator, and from the gas-cooled radiator to the first water pump, thereby preventing the surrounding air from condensing into condensate and entering the engine due to excessively low temperature of the gas cooling device.

The invention discloses a novel two-gear AMT (automated mechanical transmission) gear shifting executing mechanism, which relates to the technical field of gear shifting executing mechanisms and comprises a shell, a gear shifting motor driver, a lead screw, a lead screw nut and a sliding shifting block which are arranged on a two-gear AMT gear shifting executing mechanism body. According to the novel two-gear AMT gear shifting executing mechanism, when jamming occurs in the gear shifting process, jamming can be found in time, an alarm is given, meanwhile, stalling of a gear shifting motor driver can be avoided, and the using effect and the service life of the gear shifting motor driver are guaranteed; in the gear shifting process, lubricating oil can be used for automatically washing the surface of the lead screw, impurities attached to the surface of the lead screw can be cleaned, the lubricating effect can be achieved, therefore, the annular cover moves more smoothly, and then gear shifting operation is smoother and more stable; in the gear shifting process, lubricating oil in the gearbox is automatically filtered, impurities such as scraps are collected, use is more convenient and faster, and the use effect of the lubricating oil is guaranteed.

The utility model relates to the technical field of box locks, and discloses a box lock and equipment with the box lock. The box lock comprises a lock body, a lock catch, a spring bolt, a locking driving assembly, a micro-motion piece and a pop-up piece, the spring bolt is arranged on the lock body, and the spring bolt is provided with a locking position locked with the lock catch and an unlocking position unlocked from the lock catch; the locking driving assembly is arranged on the lock body and drives the spring bolt to be converted from the locking position to the unlocking position. The micro-motion piece is arranged on the lock body, the spring bolt can trigger the micro-motion piece when being arranged at the unlocking position, and the micro-motion piece is in communication connection with the locking driving assembly; the pop-up piece is fixedly arranged relative to the lock body or fixedly arranged relative to the lock catch and used for enabling the lock catch and the spring bolt to be away from each other by a preset distance when the spring bolt is arranged at the unlocking position. According to the box lock, locking and unlocking can be achieved between the lock catch and the lock tongue, power consumption is small, the service life is long, meanwhile, the situation of mistaken locking is effectively avoided, operation is more convenient and faster, and the humanization degree is higher.

The utility model relates to a bridge crane steel wire rope replacing device and belongs to the technical field of bridge cranes. The bridge crane steel wire rope replacing device comprises a supporting base and a rotating mechanism arranged on the supporting base. The rotating mechanism comprises a rotating disc rotationally installed on the top of the supporting base, a thrust bearing arranged at the bottom of the rotating disc and a brake assembly used for limiting rotation of the rotating disc. The device has the effect of reducing potential safety hazards caused by stall of the winding drum when the steel wire rope is replaced.

The invention relates to the technical field of soil remediation, and particularly discloses a farmland soil pollution remediation device which comprises a liquid inlet pipe and a trumpet-shaped shell, a rotating shaft is mounted in an inner cavity of the trumpet-shaped shell, a driving mechanism for driving the rotating shaft to rotate is mounted on the trumpet-shaped shell, a liquid guide ring is mounted on the rotating shaft, and a rotating assembly is mounted on the rotating shaft. The rotating assembly comprises a rotating plate, one edge of the rotating plate is fixedly connected with the rotating shaft, a gap is formed between the other edge of the rotating plate and the inner wall of the horn-shaped shell, the rotating plate is provided with a first side face and a second side face, a liquid distribution pipe is fixed to the position, close to the inner wall of the horn-shaped shell, of the second side face, and a plurality of liquid outlets are formed in the liquid distribution pipe. According to the farmland soil pollution remediation device, soil agglomerates are continuously impacted to be smashed, soil remediation liquid is uniformly distributed in the soil through continuous mixing of the soil, and the remediation effect of the soil remediation liquid on the soil is guaranteed.