191results about How to "Guaranteed steady state" patented technology

The invention belongs to the field of grid-connected converter control methods, and discloses a torque quantization-based low-frequency oscillation suppression method for a direct-current voltage synchronous inverter, which constructs a grid-connected damping torque model of the inverter, quantifies a damping torque and a synchronous torque of a system and describes oscillation characteristics of the system. When oscillation is unstable and damping or synchronous torque is a negative value, the provided compensation torque stabilizer is introduced through angular frequency deviation, a lag phase of the system at the oscillation frequency is compensated by using a lead-lag corrector, and then the compensation torque stabilizer is fed back to an active power reference value. By designing the compensation torque, it is ensured that the synchronous torque and the damping torque of the system are positive values all the time, and oscillation instability is effectively restrained. The method is suitable for a small-disturbance working condition, the steady-state characteristic of inverter operation is not changed, the grid-connected stability of the grid-forming type photovoltaic inverter is improved, and meanwhile scheduling optimization and energy efficiency evaluation of the system are not affected.

The invention discloses an ecological management method for an eroded gully in a high and cold wet steppe area, which comprises the following steps: firstly, cleaning sundries in the eroded gully, and then performing slope cutting treatment on the gully bottom and gully slope of the eroded gully; pine piles or gabion protection feet are arranged at the bottom of a ditch slope of the erosion ditch; gabion check dams and / or raft pile dams are arranged in the extending direction of the channel of the erosion gully at intervals; vegetation is planted on a ditch slope of the erosion ditch, and an ecological intercepting ditch is formed in the top of the ditch slope; the comprehensive protection system is constructed through the measures of the channel stepped gabion check dam, the log raft piles, the channel slope stabilizing structure, the ecological revetment, soil protection, vegetation recovery and the like, extension and expansion of the erosion gabion are prevented, the stable state of the gabion bank is kept, ecological balance is promoted through vegetation recovery, the anti-scouring, stability and ecological function of the erosion gabion bank are enhanced, and the ecological protection effect of the erosion gabion bank is improved. The problems existing in the prior art are solved, and the purpose of long-term effective ecological treatment of the erosion gully is achieved.

The invention relates to the technical field of hollow part production, and discloses a metal-plastic composite car lamp frame shell integrated injection molding device which comprises an injection molding machine, a movable mold and a fixed mold are installed in the injection molding machine, an external manipulator and an external cooling module are installed outside the injection molding machine, and two fixing holes are symmetrically formed in the outer surface of the movable mold; an injection molding assembly is arranged in the injection molding machine, the injection molding assembly comprises not less than two metal pipes and not less than four extension pipes, and in the cooling process, the metal pipes are cooled from inside to outside based on the physical characteristics of the metal pipes; by means of the cooling mode, the middle of the molding material is cooled and shrunk firstly, the situation that the outer layer is solidified firstly due to the fact that cooling is conducted from the outside to the inside of the cavity traditionally is changed, when the internal material is cooled and shrunk, limitation of the solidified outer layer material is avoided, and therefore the problem that cavities are generated due to inconsistent shrinkage is effectively prevented.

The invention discloses a cleaning device and method for permanent magnet synchronous servo motor stator processing, and relates to the technical field of stator cleaning, the cleaning device comprises a cleaning device, the cleaning device is provided with a cleaning tank, the cleaning tank is internally provided with a cleaning box, the cleaning box is internally and fixedly connected with a placing plate, and the cleaning device further comprises a plurality of placing rings for placing stators, the multiple placement rings are arranged at the top of the placement plate, multiple first racks are fixedly connected to the bottoms of the placement rings, the multiple first racks penetrate through the placement plate and are slidably connected with the placement plate, and elastic parts are arranged between the multiple first racks and the placement plate; the outer cleaning mechanism cleans the outer side of the stator, then the lifting piece drives the inner cleaning mechanism to clean the inner side of the stator, synchronous cleaning is achieved through cleaning liquid in the cleaning tank, and the outer cleaning mechanism and the inner cleaning mechanism are matched with the cleaning liquid in the cleaning tank, so that the cleaning effect on the stator is improved.

The invention discloses a power cable construction guide frame which comprises a supporting rod, a mounting frame and a guide part, the mounting frame is arranged at the bottom of the supporting rod and connected with the supporting rod, the guide part comprises sliding rods and guide wheels, the sliding rods are symmetrically arranged on the two sides of the center line of the mounting frame and connected with the supporting rod, and the guide wheels are arranged on the sliding rods. The multiple guide wheels are symmetrically arranged on the two sides of the center line of the sliding rod. According to the cable pay-off device, the purpose of supporting cable pay-off can be achieved through the arrangement of the sliding rods and the guide wheels, the purpose of paying off cables in opposite directions at the same time can be achieved by workers according to the penetrating mode on the cable guide wheels, and multiple cables can be paid off at the same time through the arrangement of the guide wheels; as the guide wheels are located on the two sides of the center line of the sliding rod, cables can be prevented from being wound mutually in the cable pay-off process, and the pay-off efficiency and pay-off quality of the cables are greatly improved.

The invention provides an intracranial aneurysm plugging device, and belongs to the technical field of interventional medical instruments. An intracranial aneurysm plugging device comprises an intra-aneurysm part, an extra-aneurysm plugging part, a connecting part, a conveying guide wire and a conveying catheter, the intra-aneurysm part and the extra-aneurysm plugging part both have a contraction state and an expansion state, and the intra-aneurysm part is arranged in an inner cavity of a aneurysm body; the outside-tumor plugging part is used for pressing the outer side wall of the tumor body inlet; the connecting part is arranged between the in-tumor part and the out-tumor plugging part and is used for connecting the in-tumor part and the out-tumor plugging part; the out-tumor plugging part can move on the connecting part so as to adjust the distance between the out-tumor plugging part and the in-tumor part; the far end of the conveying guide wire is detachably and fixedly connected with the near end of the connecting part; the conveying catheter is used for containing the in-tumor part and the out-tumor plugging part in a compressed state; the intracranial aneurysm treatment device is used for solving the technical problems that an existing intracranial aneurysm treatment device cannot effectively prevent blood flow from further flowing into a tumor body, and the tumor body is damaged.

The utility model relates to the technical field of refrigerant gas tank detection, in particular to a detection device for a refrigerant gas tank. Comprising a support, a water storage frame, mounting blocks, electric push rods, a mounting plate, a placing ring, an air conveying pipe and the like, the water storage frame is arranged at the top of the support, at least two mounting blocks are arranged on the rear side of the water storage frame at intervals, the electric push rods with upward telescopic ends are mounted on the mounting blocks, and the mounting plate is arranged at the telescopic ends of the electric push rods; at least two placing rings for placing a gas tank are arranged at the bottom of the mounting plate at intervals, and a gas conveying pipe concentric with the placing rings is arranged on the mounting plate. The mounting plate is driven by the electric push rod to move up and down, so that automatic operation of water immersion detection of the gas tank can be realized, the gas tank attached with water can be stopped above the water storage frame and is blow-dried by the fan and wind power of the flow dividing chamber, the situation that the water is scattered when the gas tank is taken out is avoided, and a guarantee is provided for the safety of detection work.

The invention discloses a dismantling method for an ultra-long and ultra-heavy flying escalator at the atrium position. The dismantling method comprises the steps that the flying escalator is determined to be dismantled and transported outwards, and an upper hanging point for hanging a hanging rope is determined; dismantling accessory components of the flying staircase; a hoisting assembly is hung between the end of the flying ladder and the upper hoisting point; hoisting the flying staircase away from the structural floor to suspend the bottom end of the flying staircase; a traction assembly is arranged at the bottom end of the flying ladder; the traction assembly is matched with the hoisting assembly to slowly lower the bottom end of the flying staircase to a demolished outward transportation floor; the ground cattle are cushioned at the bottom end of the flying staircase, the hoisting assembly is matched with the traction assembly to enable the bottom end of the flying staircase to move in the direction away from the atrium till the flying staircase is completely transferred to the structural floor area from the atrium area, and the flying staircase is pulled to the decomposition area to be decomposed and transported outwards. According to the method, the safety of the flying escalator in the dismantling process is effectively ensured, the dismantling work of the flying escalator is efficiently completed on the premise of ensuring the construction safety, and experience and reference are provided for follow-up related projects.

The invention provides a positioning mechanism for welding processing, which relates to the technical field of workpiece welding, and comprises a connecting unloading mechanism, a clamping mechanism, a temporary storage mechanism and a multifunctional mechanism, the connecting and discharging mechanism is mounted at the top of the mounting bottom plate; the number of the clamping mechanisms is two, and the two clamping mechanisms are installed at the left end and the right end of the connecting discharging mechanism and used for clamping workpieces to be welded. The number of the temporary storage mechanisms is two, and the two temporary storage mechanisms are installed on the top of the installation bottom plate and used for temporarily storing welded workpieces. The driving mechanism is mounted at the tops of the two groups of temporary storage mechanisms; the multifunctional mechanism is mounted at the bottom of the driving mechanism; according to the invention, the installation time of the to-be-welded workpiece is saved, and the welding efficiency of the workpiece is improved; the problems that a workpiece to be welded can only be placed after the welded workpiece is taken down, the installation time of the workpiece is prolonged, and the welding efficiency of the workpiece is reduced are solved.

A kind of ground consolidation ramming device, the ground ramming technical field, including ramming unit, further include: vertical arm, first ramming plate, receiving slot, let place slot, pivot, rotating seat and second ramming plate, vertical arm is vertically arranged along vertical direction;First ramming plate is vertically and fixedly installed at the bottom end of vertical arm;Receiving slot is provided with two, and two receiving slots are symmetrically opened on the upper surface of second ramming plate.The utility model can flexibly control the folding, unfolding state of second ramming plate at first ramming plate, to adjust the ground ramming contact area;When increasing area, single-time ramming area is larger under the same construction scale, reduces the frequency of repetition, improves construction efficiency;Second ramming plate is retracted to first ramming plate, and ramming area can be reduced, which is convenient for narrow area operation;It can be adjusted according to the ground condition, adapt to complex working conditions, improve the versatility and flexibility of equipment, reduce equipment purchase cost.

The invention relates to a frequency conversion cooperative starting control method for a motor of a ship emergency power system. The method comprises the following steps: step 1, modeling of the ship emergency power system: establishing an optimal configuration model of a ship comprehensive power system based on multiple constraint conditions of operation economy, system operation safety and power distribution rapidity of a diesel generating set; step 2, load starting conditions of the high-power motor: when the number of pole pairs of a motor winding is fixed, the starting torque of the motor can be adjusted by changing the terminal voltage and the power supply frequency; and 3, AFE control is adopted for a rectification part, and V / F control is adopted for an induction motor. The problem that an existing motor starting control method is not suitable for a ship emergency electric power system and cannot meet the requirement of a high power factor is solved, the alternating voltage generated by the AFE can still be kept in a stable state, the frequency conversion control mode is more stable, and the reliability is higher. The method is more suitable for stabilizing the condition of high ship pulse load power change, and the stability of a ship emergency power system is further improved.

The invention discloses a bar fixed-length shearing device which comprises a mounting frame, a conveying mechanism, a cutting mechanism, a clamping mechanism and a discharging mechanism, the conveying mechanism is arranged at the top of the mounting frame and connected with the mounting frame, the cutting mechanism is arranged on one side of the top of the mounting frame and connected with the mounting frame, and the clamping mechanism is arranged on the other side of the mounting frame. The cutting mechanism comprises a rotating shaft, a mounting seat, a cutting motor, a cutting piece, a first belt wheel, a second belt wheel and a first belt, the cutting motor is fixedly mounted on the mounting frame, the first belt wheel is connected with an output shaft of the cutting motor, the rotating shaft is rotatably mounted at the top of the mounting frame through the mounting seat, and the cutting piece is arranged on the outer side of the mounting frame; the number of the cutting pieces is two. By adjusting the distance between the cutting pieces on the two sides of the center line of the rotating shaft, fixed-length bars with different lengths can be cut, the continuity is good, and the production efficiency and the production quality are greatly improved.

The present invention discloses a discrete linear flip plate sorting machine, which relates to the technical field of sorting machines. The present invention comprises a base and a loading plate, two vertical plates are symmetrically arranged on the base, the loading plate is installed between the two vertical plates, guide mechanisms are installed on opposite sides of the base, a rod body is installed on the back of the loading plate, the rod body extends downward through the base, the base is placed on a guide rail, the guide mechanism cooperates with the body limit provided on the side of the guide rail, a number of stations are provided on the guide rail, two connecting folding plates are symmetrically installed on each station, a channel inclined outward is fixed on the connecting folding plate, and a jacking assembly is installed in each station. The present invention can make a plurality of bases connected in sequence to form a mail conveyor belt by moving the provided base to the unloading station under the pull of a transmission belt, thereby realizing the synchronous sorting of a plurality of mails and improving work efficiency.

The invention relates to the related technical field of profile conveying, in particular to an aluminum alloy profile conveying device with an anti-overturning function, which comprises a base, a conveying module, a lifting cylinder, a mounting frame, a mounting shell, a buffer module, a pressing module and a correction module. According to the sectional material conveying device, the sectional material conveying stability is improved in multiple modes, when a sectional material slightly vibrates in the conveying process, the buffering module effectively absorbs vibration energy and reduces the vertical amplitude of the sectional material through cooperation of a buffering plate and a spring, and when the sectional material has the risk of rollover, a pressure shell of the downward pressing module is attached to the sectional material in a shape-conforming mode; the side turning trend of the sectional material is eliminated through reverse rotation of the rotating roller, the sectional material is flattened in a soft and slow mode, it is ensured that the sectional material is recovered to be in a stable state, then the correcting module aligns the sectional material front and back by controlling the adjusting plates to be folded, it is ensured that the speed in the same direction as the moving direction of the sectional material exists when the adjusting plates are folded, and therefore the material carrying phenomenon is avoided.

The invention discloses a lithium battery aluminum shell size detecting and positioning device and method, belongs to the technical field of lithium battery accessory production, and aims to solve the problems that an existing detecting device is single in function and low in efficiency due to the fact that clamping needs to be conducted for multiple times, and an aluminum shell is prone to deformation. Four groups of clamping parts are symmetrically arranged on the support frame, and a bidirectional screw is used for driving a first clamping plate and a second clamping plate to synchronously clamp an aluminum shell from the inner side and the outer side, so that stable positioning is realized; the internal measuring part drives a distance sensor to rotate through a stepping motor and cooperates with an electric push rod to complete inner cavity size measurement. The external measuring part adopts a similar structure to realize outer wall dimension detection, the support frame is driven by the driving motor to lift, internal and external dimension continuous measurement under one-time clamping is realized, the device reduces positioning errors, avoids aluminum shell deformation, improves detection precision and efficiency, and is suitable for lithium battery aluminum shell production quality control.

The invention relates to the technical field of automobile manufacturing, and discloses an automobile production chassis multi-angle welding device which comprises a welding base, a driving gear shaft and a cleaning assembly arranged in the welding base. The cleaning assembly comprises a first toothed bar, a first sliding table, a bevel sliding groove and convex teeth. The first toothed bar is slidably connected to the interior of the welding base and engaged with the driving gear shaft. The rolling brush can conduct rolling sweeping on the upper surface of the welding base in the rotating process, so that disintegrating slag on the upper surface of the welding base is pushed into the guide groove under pushing of rolling of the rolling brush, the disintegrating slag on the welding base is cleaned, and the welding base is in a clean state when the frame is placed on the welding base; and the convex points on the bevel plate can clean the surface of the rolling brush, so that disintegrating slag on the upper surface of the welding base is cleaned, the rolling brush is self-cleaned, and the problem that workers need to clean the rolling brush repeatedly during welding is solved.

The utility model discloses a water conservancy project flood prevention device, and relates to the technical field of flood prevention devices, the water conservancy project flood prevention device comprises a flood prevention assembly, the flood prevention assembly is composed of an L-shaped water retaining seat and a front end extension plate, the interior of the L-shaped water retaining seat is of a cavity structure, and the top of the L-shaped water retaining seat is open; when an L-shaped baffle structure composed of the L-shaped water retaining base and the front end extending plate is placed on the ground, an inner cavity of the L-shaped water retaining base is filled with water through an opening in the top of the L-shaped water retaining base, and the pressing force between the bottom of the L-shaped water retaining base and the ground and between the bottom of the front end extending plate and the ground is increased. According to the flood prevention assembly, the L-shaped water retaining base of the cavity structure is arranged, water is filled into the inner cavity of the L-shaped water retaining base when the stability is weak due to small water flow, and therefore the pressing force between the L-shaped water retaining base and the ground and the pressing force between the front end extending plate and the ground can be increased, and the flood prevention assembly can keep a stable state under the condition that the water flow is small.

The present invention relates to the technical field of wheat growth monitoring, and in particular to a growth monitoring method based on greenhouse wheat seedling cultivation, comprising the following steps: deploying a sensor network in the greenhouse; constructing a multi-parameter coupling model, and determining the dynamic interaction between multiple parameters by introducing a coupling coefficient. The multi-parameter coupling model adopts a multiple regression analysis method, combines historical data with real-time data, dynamically adjusts the coupling coefficient, constructs a multi-parameter coupling model, and analyzes the influence of the coupling changes of various environmental parameters on the growth of wheat seedling cultivation; and sets an environmental control unit to adjust the temperature, humidity, light and carbon dioxide concentration parameters in the greenhouse in real time. The present invention ensures that the environmental parameters in the greenhouse can be adaptively maintained in an optimal state, thereby effectively improving the overall growth efficiency and quality of wheat seedling cultivation.

This utility model discloses a steel pipe feeding device for steel pipe processing, including a base plate. A fixing component is provided on the top of the base plate, and an auxiliary component is provided on the bottom of the base plate. The fixing component includes a fixing plate and multiple support frames. Each support frame consists of a horizontal plate and three vertical rods (front, middle, and rear). Steel pipes are stacked between adjacent support frames. Multiple slots are opened inside the fixing plate. The vertical rods in the middle of the support frames are respectively inserted into the corresponding slots. The fixing plate is located above the uppermost steel pipe. This utility model relates to the field of steel pipe processing technology. The steel pipe feeding device for steel pipe processing directly adheres to the uppermost steel pipe through the anti-slip rubber extrusion block at the bottom of the fixing plate. With the pressure adjustment of the nut and the first screw, a stable downward pressure can be applied to the steel pipe. The deformation characteristics of the anti-slip rubber enhance the fit and prevent slippage, while avoiding rigid compression damage to the surface of the steel pipe, thus achieving both fixing effect and protection function.

The invention discloses a mobile fire-fighting device for a photovoltaic booster station and a use method of the mobile fire-fighting device, and belongs to the technical field of photovoltaic booster station fire fighting. A mobile device for controlling a box body to move is arranged below the box body, and a fire-fighting bracket for placing fire-fighting equipment is arranged in the box body; a fixing mechanism used for fixing fire-fighting equipment is arranged at the bottom of the fire-fighting support, a second supporting plate is arranged between the bottom of the fire-fighting support and the fire-fighting equipment, a fixing plate is hinged to the outside of the fire-fighting support, a second spring is arranged between the fixing plate and the fire-fighting support, and a control rope is arranged between the fire-fighting support and the fixing plate. The fixing mechanism is automatically adjusted through gravity sensing, a second supporting plate is controlled to move downwards through the gravity of the fire-fighting equipment, then the fire-fighting equipment is clamped and fixed through a fixing plate under the action of a control rope and a second spring, and due to the design, the operation process is simplified, the fixing effect is improved, and the practicability is high. And the stability of fire-fighting equipment in the transportation and fire extinguishing process is ensured.

The utility model discloses an auxiliary eyelid opening device for eye treatment, which comprises a binding belt wound on the head of a user, a through hole matched with the eye in size is formed in the binding belt in a penetrating manner, a clamping bag is mounted on the binding belt, and an opening of the clamping bag faces the through hole. The clamping bag is provided with two sliding blocks, the two sliding blocks are in sliding contact with the clamping bag, the clamping bag is provided with a driving piece used for driving the two sliding blocks to get close to each other or get away from each other, the sliding blocks are connected with eye speculum bodies, and when the two sliding blocks get away from each other, the eye speculum bodies are driven by the driving piece to get close to each other or get away from each other. The sliding block opens two eye curtains of a patient through the eye speculum. According to the eye speculum, the eye speculum used for opening the eye curtain of the patient is arranged on the binding belt, and the eye speculum is limited and fixed through the binding belt when the eye speculum is used, so that the stable state of the eye speculum in the using process is kept, and the two hands of a user can be liberated.

The utility model discloses an air conditioner temperature and humidity controller, which relates to the technical field of air conditioner control equipment and comprises an obliquely arranged temperature and humidity controller, an accommodating frame is arranged on the outer side of the temperature and humidity controller, the accommodating frame is of an inverted isosceles trapezoid structure, and the temperature and humidity controller is attached to the inner wall of the bevel edge of the accommodating frame. A movable pressing plate is arranged on the back face of the temperature and humidity controller, a pair of limiting rings are fixedly connected to the surface of the pressing plate, a pair of intercepting rings are embedded in the surface of the containing frame, guide rods extending to the inner sides of the limiting rings are in threaded connection to the intercepting rings, the intercepting rings and the guide rods are distributed in an inclined state, and positioning rings are fixed to the outer surfaces of the guide rods. The positioning ring and the limiting ring are connected through an adjustable pressure structure. According to the utility model, the stable state of the temperature and humidity controller on the inner side of the accommodating frame is guaranteed, and the stability and safety of the temperature and humidity controller in a long-term working state are further guaranteed.

The utility model belongs to geological prospecting technical field, and disclose a hole depth measuring device for geological exploration, including support frame and install the paying -off mechanism of support frame surface and install the detecting member of paying -off mechanism one end, the surface of support frame is equipped with accurate reading assembly, accurate reading assembly includes the guide roller of symmetry rotation connection support frame surface and the abutment plate of symmetry clamping in the through slot of detecting member surface and is used for driving screw rod, driving disc, hinged seat, push -pull board, limiting plate, the surface of abutment plate is equipped with auxiliary stabilizing component, the utility model has can straighten the processing to measuring rope, avoid measuring rope to occur folding, accumulation etc. in the hole, make the actual length below measuring rope and hole depth are different, cause the deviation of survey data, improve the precision of hole depth data measurement, improve the advantages such as geological exploration work efficiency and data reliability.

The utility model discloses mine ventilation and gas safety monitoring equipment, which belongs to the technical field of monitoring equipment and comprises a positioning plate, a plurality of mounting grooves arranged on the outer wall of the positioning plate, a mounting mechanism arranged on the positioning plate, a monitoring mechanism arranged on the mounting mechanism, and a positioning mechanism comprising a plurality of threaded adjusting pipes. Each threaded adjusting pipe movably penetrates through the outer wall of the positioning plate, the positioning plate is used for being fixed to the inner wall of a mine, the mounting mechanism is arranged on the positioning plate and used for mounting and dismounting the monitoring mechanism, and when the positioning plate is mounted, the using length of the threaded adjusting pipes is adjusted according to the situation of the inner wall of the mine; the use length of the threaded adjusting pipe is matched with the distance between the positioning plate and the mine wall, it is conveniently guaranteed that the positioning plate is in a stable state, the adjusted threaded adjusting pipe is conveniently fixed to the positioning plate through the two positioning nuts, the positioning plate is conveniently installed on the inner wall of the mine through the positioning bolts, and the use stability of the monitoring mechanism is improved.

The invention discloses an elevator system and a control method and device thereof and a computer storage medium, the elevator system comprises a shaft, one or more elevator cars and a supporting structure, the supporting structure comprises telescopic devices arranged at the bottoms of the elevator cars and supporting pieces arranged at different heights of the inner wall of the shaft, when the elevator car reaches the leveling position, the extension part of the telescopic device at the bottom of the elevator car can stretch out in the well wall direction, and the extension part stretching out to the supporting position can be supported on the supporting piece at the corresponding position. In response to the received weight loading outbound elevator request, the target elevator car is operated to a first target floor corresponding to the weight loading outbound elevator request; under the condition that the vehicle runs to the first target floor, an extension part of a telescopic device at the bottom is controlled to extend out; and under the condition that it is determined that the stretching part stretches out to the supporting position, the car door is controlled to be opened for heavy object loading. According to the embodiment, the stable state of the elevator car in the heavy object loading process can be maintained, and the operation reliability of an elevator system is improved.

The utility model provides an intelligent robot emergency stop circuit, including power supply, emergency stop trigger source module is used for triggering emergency stop signal, emergency stop trigger source module includes at least one emergency stop button and at least one anti -collision strip sensor interface, and emergency stop button, anti -collision strip sensor interface are connected with power supply, a plurality of signal processing modules, and each signal processing module includes first photoelectric coupler, and the input of first photoelectric coupler is connected with emergency stop button or anti -collision strip sensor interface, and the output is connected with MCU, self -locking control module respectively, self -locking control module includes self -locking circuit, and the input of self -locking circuit is connected with a plurality of signal processing modules respectively, and the output is connected with motor control module, and motor control module is used for receiving the emergency stop signal of handled and control motor stop movement, the utility model has realized the effective integration to multiple emergency stop signal source, and its self -locking function can maintain the emergency stop state automatically after triggering.

The invention relates to the technical field of preparation of cleansing products, in particular to a formula and a preparation method of skin-refreshing cleansing oil, and the skin-refreshing cleansing oil is characterized in that fatty acid ester components and polyoxyethylene ether surfactants in a system are balanced by adjusting the proportion of cetyl alcohol ethyl hexanoate to PEG-8 diisostearate; after the proportion is adjusted, the dosage of sorbitol polyether-30 tetraoleate is increased to 7%, and the strength of an interfacial film is improved; and tocopherol is added as an antioxidant substance, so that the risk of emulsification collapse caused by oxidation stability is reduced. According to the skin-refreshing cleansing oil formula and the preparation method, the strength of an interfacial film is enhanced by increasing the dosage of sorbitol polyether-30 tetraoleate, oxidation is inhibited by adding tocopherol, the content of squalane is dynamically adjusted by combining the proportion of polar / non-polar components, emulsification collapse and layering are effectively avoided, and it is ensured that the product is kept in a stable state in the storage and use process.

An electric reset bouncing type door opener comprises a bottom shell and a face cover, a mounting area is formed between the bottom shell and the face cover in a hollowed-out mode, and the front end of the mounting area penetrates through the bottom shell and the face cover to form a receding groove. A swing arm is installed in the installation area in a hinged mode, and the swing arm pops up from the receding groove to push the cabinet door to be opened. An elastic device is mounted in the mounting area; an electric mechanism is further installed in the installation area and connected with the swing arm, and the electric mechanism pushes the swing arm to retract and reset towards the installation area. A circulating lock groove is further formed in the swing arm, a circulating lock hook is installed in the installation area, and the circulating lock hook and the circulating lock groove are hooked or separated, so that locking and releasing of the swing arm are achieved. The rebounding device has the beneficial effects that by designing the electric mechanism and the swing arm gear transmission mechanism, the swing arm can automatically pop out of the cabinet door under the action of the elastic device, the electric mechanism can realize retraction and resetting of the swing arm, and resetting of the rebounding device can be completed without additionally pressing the cabinet door when a user closes the cabinet door.

The utility model relates to an air conditioner return air plenum chamber mounting and fixing structure, which comprises a plurality of groups of external fixing components which are supported on the outer side of an air conditioner return air plenum chamber at intervals along the length direction of the air conditioner return air plenum chamber and are used for hoisting the air conditioner return air plenum chamber on a concrete structure layer; the internal fixing assembly is supported on the inner side of the air conditioner return air plenum chamber and fixes a sound absorbing material on the inner side of the air conditioner return air plenum chamber; the internal fixing assembly comprises angle steel supported on the inner walls of the air conditioner air return plenum chamber at intervals in the length direction of the air conditioner air return plenum chamber and rivets for fixing the angle steel. According to the scheme, the air conditioner air return plenum chamber is installed and fixed from the interior and the exterior of the air conditioner air return plenum chamber at the same time, it is guaranteed that the air conditioner air return plenum chamber is stably arranged on the top of a floor, and meanwhile the stable state and the suction effect of sound absorption materials in the air conditioner air return plenum chamber are guaranteed; it is guaranteed that the air conditioner air return plenum chamber cannot leak air, and the air return mute effect of the air conditioner air return plenum chamber is effectively improved.

The utility model relates to the technical field of shoemaking, in particular to shoemaking-based hot melt bonding equipment which comprises a base, a baffle is fixedly connected to the top of the base, a top plate is fixedly connected to the top of the baffle, a cooling assembly is fixedly connected to one side of the baffle, and a mold is fixedly connected to the top of the base. The top of the base is slidably connected with an adaptive assembly, one side of the base is fixedly connected with a motor, and one side of the motor is rotatably connected with a limiting assembly. Through the arrangement of the adjusting plate and the adjusting screw rod, during use, the adjusting plate is driven to slide back and forth through the rotation of the adjusting screw rod, the mold is driven to operate through the sliding of the adjusting plate, and then the mold, the base, the clamping plate, the adjusting screw rod and the adjusting plate are matched for use, so that the effect of conveniently adapting to shoes with different lengths is achieved; and the situations of difficulty in bonding, reduction of the use efficiency of the device and increase of the cost caused by different lengths of shoes and difficulty in adjusting the size of the mold are avoided.