13results about How to "Avoid shock loads" patented technology

The invention relates to the technical field of non-electrical variable control or regulation systems, and discloses an exhaust gas aftertreatment flow channel back pressure dynamic regulation method, which comprises the following steps: acquiring a supply source phase reference signal and establishing cyclic mapping; a fluid channel pressure signal pulse range change rate is extracted to determine a feed-forward factor; determining a pressure signal trough interval as an action window; determining a reference amplitude based on the feedback deviation and using a feed-forward factor for compensation to determine a target adjustment instruction; the adjusting mechanism is driven to move in the action window, so that the response peak value is locked in the trough interval, the adjusting action is locked in the low-energy phase, kinetic energy intervention of fluid pulses on the adjusting mechanism is avoided, and mechanical abrasion is reduced; pulse characteristic feed-forward compensation is utilized to enable an adjusting instruction to sense the trend of a flow field, the response speed is increased while a signal is smoothed, and pressure balance under the transient working condition is maintained.

The application relates to a kind of automatic garbage transfer control method and system based on multi-agency cooperative scheduling, wherein, method includes: according to multi-source data, dynamically allocate unloading port positioning parameter, vehicle unloading window period and vehicle operation time beat, to guide corresponding vehicle unloading;Through push mechanism, the material retained in unloading port is transported to the operation area of lower mechanism;Through laser scanning device, the three-dimensional profile data inside unloading pit before and after unloading is monitored, the motion parameters of lower mechanism are synchronously collected, and the matching state of lower mechanism and vehicle operation time beat is judged;Based on three-dimensional profile data and motion parameters, dynamic volume model is established, and single unloading amount is calculated in real time in combination with material density parameter;When detecting that single unloading amount exceeds tolerance range or beat is out of synchronization, chain plate machine variable speed gradient adjustment, push mechanism intervention compensation and unloading port redistribution adjustment are carried out. Therefore, the automatic operation efficiency of garbage transfer is significantly improved.

This invention relates to the field of injection mold technology, and particularly to a hot runner linked hot nozzle, comprising a hot runner plate, a support cylinder, a hot nozzle, a movable contact mechanism, a heat conduction mechanism, and a limiting and fixing mechanism. This invention solves the following problems existing in hot runner hot nozzles: the rigid contact between the hot nozzle and the gate is easily subjected to impact and wear during the opening and closing of the moving and fixed molds, leading to overflow when injecting molten plastic; after injection, a small amount of molten plastic remains between the injection end of the hot nozzle and the gate, easily causing gate blockage, and injection into the mold cavity can lead to product defects; this invention can control the contact between the hot nozzle and the gate to only occur during molten plastic injection, preventing rigid contact between the hot nozzle and the gate, effectively avoiding overflow caused by damage to the contact surface of the hot nozzle and the gate; this invention can conduct the heat of the molten plastic to the inside of the hot nozzle and the molten plastic between the bottom of the hot nozzle and the gate for heat preservation, preventing it from cooling and solidifying.

This invention relates to an electric trailer hitch. A motor output shaft passes through the center of a drive base and is rotatably connected to a drive disc located outside the drive base. A recessed drive mounting recess is formed on the outer surface of the drive disc by a drive constraint retaining ring with a drive clearance opening. A central groove passing through the center of the drive disc is formed on the bottom surface of the drive mounting recess. Side grooves connect to both sides of the central groove. Drive pins are installed within the central groove and side grooves. Two drive columns on the same circumference are also provided on the drive disc corresponding to the drive clearance opening. The drive shaft is eccentric to the motor output shaft, and the drive output shaft section passes through the outer... The cover connects to the trailer hook, with the rear end of the drive input shaft section supported on the bottom surface of the drive mounting recess. The front end of the drive input shaft section is placed within the drive constraint recess corresponding to the drive clearance opening at the inner end of the outer cover. The two sides of the drive input shaft section's cross-section have large arc edges that correspond to and fit the inner ring of the drive constraint retaining ring, while the other two sides have small arc edges that correspond to and fit the inner ring of the drive constraint recess. A drive pin is axially inserted non-centrally on the inner small arc edge of the drive input shaft section, and a drive opening is formed on the outer small arc edge of the drive input shaft section. The drive opening contains two drive slots corresponding to the two drive columns, respectively. Its compact structure and stable driving and operating conditions help extend the lifespan of the structure and motor.

The utility model discloses a kind of film winding pressure roller structure, it is related to film winding technical field, including the pressure roller assembly of overhanging being arranged on winding shaft, the pressure roller assembly includes two groups of parallel arrangement mounting plate and the pressure roller of being arranged in the inboard of two mounting plates, and the rotary axis of pressure roller and the rotary axis of winding shaft is parallel state arrangement, to when winding film is wound on winding shaft, pressure roller is pressed to film with the resistance of towards winding shaft, and the effective resistance length of pressure roller is greater than the width of film.The utility model is designed by overhanging type pressure roller assembly, so that winding shaft and pressure roller axis parallel collimation layout, the design of the effective resistance length of pressure roller set exceeds film width, forms axial full coverage type line contact pressing interface, can inhibit edge stress relaxation phenomenon in winding process, guarantee the consistency of roll material end face neatness and interlayer tightness.

This utility model belongs to the field of power distribution technology, specifically relating to a circuit device with progressive overpower protection and a wireless fast charger. The circuit device includes: an input rectifier unit, a power conversion unit, a feedback control unit, an overpower protection trigger unit, and an output unit. The overpower protection trigger unit is configured to output an overpower protection signal to the feedback control unit when the output power of the output unit exceeds a threshold. The feedback control unit is also configured to output a corresponding control signal to the power conversion unit. By setting an overpower protection trigger unit between the feedback control unit and the output unit, this utility model can gradually reduce the output voltage and gradually increase the current when the output power of the output unit is abnormal, until the voltage drops below 3.3V to trigger the cut-off protection. This avoids the impact of direct power failure on the load, overcomes the problem of abnormal load operation and data loss caused by direct power failure, and achieves a smoother protection process.

The invention provides a control method for reducing coiling side guide clamping steel, and relates to the technical field of strip steel production, and the control method comprises the following steps: S1, a standby preparation stage: when an F1 rack completes loading, a coiling machine reaches a ready state, and meanwhile, a secondary system issues an initial width reference value; according to the control method for reducing coiling side guide steel blocking, through the setting of dynamic correction of the reference value, the side guide opening degree is made to be matched with the actual width of the head of the strip steel, the steel blocking occurrence rate is reduced by more than or equal to 80%, waste steel losses are reduced, through the matched design of the grading short stroke and the dual-mode control, the strip steel coiling center line deviation is made to be smaller than or equal to + / -0.5 mm, and the steel blocking rate is reduced. Therefore, the aim of improving the alignment degree between coiling layers is fulfilled, the damage to the edge part of the strip steel is reduced, and the phenomenon of impact load can be avoided when the equipment coils the strip steel through pressure feedback protection and speed hierarchical control, so that the aim of prolonging the service life of the side guide plate and the driving oil cylinder is fulfilled to a certain extent.

The application discloses a kind of based on low temperature embrittlement cooperates prefabricated mark guide plate stamping equipment, including base and the shelf plate of being movably arranged on base, the holding module for being clamped and positioning outside the processing area of tensioning the plate to be processed of outside the plate to be processed is arranged between the base and shelf plate, and the groove prefabricated module for processing V-shaped guide groove to outside the plate to be processed preset fracture zone, the low-temperature cooling module for the plate after being processed by groove prefabricated module is arranged on the side of base, to reduce the temperature of plate and maintain low-temperature atmosphere by being used for rapid cooling, and the control cabinet for being respectively communicated connection control with holding module, groove prefabricated module and low-temperature cooling module.The application solves the problem that traditional stamping process handles high-strength alloy plate and the outer ring component of difficult deformation material, because prefabricated mark processing, low-temperature treatment and stamping forming link discrete layout lead to parameter matching, low-temperature embrittlement uncontrollable, difficult to realize the problem of accurate control of fracture surface quality.

The utility model provides a kind of floating self-centering type fixture structure for improving bushing press fitting accuracy, including base assembly and upper press head assembly, the base assembly includes the press fitting base for supporting product, the press fitting base is internally provided with the positioning mandrel that can float up and down, the top end of the positioning mandrel can be installed bushing after being passed out the inner hole of product;The upper press head assembly includes upper press head, the upper press head is internally provided with the centre of the top that can float up and down, the tip of the centre of the top projects upper press head setting and can be with the axial center of positioning mandrel cooperation centring, the centre of the top can be driven down after moving down positioning mandrel and bushing is pressed into the inner hole of product.

The application relates to the technical field of non-electric variable control or regulation systems, and discloses a kind of exhaust gas aftertreatment flow channel back pressure dynamic regulation method, comprising: obtaining supply source phase reference signal and establishing cycle mapping;Extracting fluid channel pressure signal pulse range change rate to determine feedforward factor;The pressure signal trough interval is determined as the action window;Determine the target regulation instruction based on the reference value determined by the feedback deviation and compensate using the feedforward factor;Drive the regulating mechanism to displace within the action window, so that the response peak is locked in the trough interval, the application locks the regulating action in the low-energy phase, avoids the kinetic energy intervention of fluid pulse on the regulating mechanism, and reduces mechanical wear;Using pulse characteristic feedforward compensation makes the regulation instruction perceive the flow field trend, while smoothing the signal, improves the response speed, and maintains the pressure balance under transient operating conditions.

The present application provides excavator and energy recovery system of excavator movable arm and bucket based on pump motor, and relates to the technical field of excavator.The energy recovery system comprises a bucket cylinder, a first three-position four-way electromagnetic reversing valve adapted to switch the rod cavity and the rodless cavity of the bucket cylinder to be communicated with the first two-position two-way electromagnetic reversing valve and the second two-position three-way electromagnetic reversing valve respectively, a movable arm cylinder, a second three-position four-way electromagnetic reversing valve adapted to switch the rod cavity and the rodless cavity of the movable arm cylinder to be communicated with the first two-position three-way electromagnetic reversing valve and the second two-position two-way electromagnetic reversing valve respectively, a hydraulic pump adapted to supply hydraulic oil in a hydraulic oil tank to the first two-position two-way electromagnetic reversing valve and the third two-position two-way electromagnetic reversing valve, and a motor drivingly connected to the hydraulic pump.A pump motor is connected between the second two-position two-way electromagnetic reversing valve and the hydraulic oil tank, an electric motor generator integrated machine is drivingly connected to the pump motor, and an energy storage device is electrically connected to the motor and the electric motor generator integrated machine.

The utility model provides a kind of stirring station intelligent metering device, it is related to measuring equipment technical field, including base, the top of base is equipped with controller, the side of controller is equipped with scale table, the top of scale table is equipped with gear box, the side close to controller of gear box is equipped with first servo motor, material is slowly slid to bottom feed hopper along inclined inner wall under the action of gravity, avoid instantaneous concentrated impact weighing sensor, to reduce dynamic interference and improve weighing accuracy.Feed hopper bottom is connected with the feed inlet of material conveying pipe, two parallelly arranged reverse-rotating spiral conveying shafts are arranged in material conveying pipe, material is uniformly sent to discharge port by stable spiral propulsion, and is continuously discharged by discharge port, the whole process realizes the buffering, shunting, stable conveying of material, effectively solve the problems such as large impact load caused by material directly free-fall impact weighing bin from bin, forced increase of sensor range, reduction of measurement accuracy etc.

The utility model relates to the field of aviation technology, concretely relates to a fixed wing aircraft embedded rudder engine transmission structure, including fuselage, fixedly connected on the main wing of fuselage, the aileron of rotary connection in one side of main wing and rudder engine, main wing and aileron are integrally connected through composite material flexible connecting structure, and rudder engine is embedded in the fuselage, and the output gear of rudder engine is transmission connection with aileron root, and the center axis of rudder engine output gear rotation coincides with the extension line of aileron rotation axis and is arranged, and through composite material, the integration lightweight is realized, and more through the creative space layout and function coupling of transmission system and integration structure, completely eliminate transmission gap, and realized the revolutionary assembly experience of " aligning and combining", thereby guaranteeing the extremely high control accuracy and reliability at the source.