13results about How to "Eliminate shock" patented technology

This invention provides a vehicle preheating control method, apparatus, device, and computer-readable storage medium, comprising: receiving a battery preheating command; responding to the battery preheating command, controlling the vehicle's heating unit to heat the vehicle's battery; during the heating process, acquiring the battery's state parameters; and, based on the state parameters, determining that the battery meets preset conditions, controlling the vehicle's hydraulic pump to establish working pressure, and based on the working pressure, achieving hydraulic oil temperature rise. This decouples the contradiction between insufficient battery performance at low temperatures and the cold start impact of the hydraulic system, avoids the risk of damage caused by forcibly loading before the battery's capacity is sufficient, and eliminates the impact and wear caused by direct pressure build-up of the hydraulic pump, thereby achieving safe and efficient system-wide coordinated preheating.

The utility model relates to the technical field of tea packaging equipment discloses a tea bag conveying buffer device, including the buffer channel of oblique shape, can guide the inner package tea bag to slide along the buffer channel steadily, this process effectively reduced the initial falling speed of inner package tea bag, laid the foundation for subsequent buffer processing. When the inner package tea bag slides out from the buffer channel, will contact with the arc plate, in the moment of contact, the movement direction of inner package tea bag is not only changed to slide along the arc surface to the bottom, and the arc plate will absorb the kinetic energy of inner package tea bag through slight shaking of itself, so that inner package tea bag eliminates the impact force completely after passing through the arc plate, finally falls to the workstation steadily with nearly zero impact.

This utility model relates to the field of gummy candy production technology and discloses a casting device for producing goji berry lutein ester gummy candies. It includes a material storage tank, an exhaust pipe fixedly installed at the upper end of the material storage tank, an exhaust valve disc fixedly installed at the inner side of the exhaust pipe, the exhaust valve disc having an annular cross-section, a sealing disc second at the upper end of the exhaust valve disc, a limiting rod second fixedly installed at the upper end of the sealing disc second, the upper end of the limiting rod second extending to the outside of the exhaust pipe, a gas conveying pipe second fixedly installed at the upper end of the exhaust pipe, and a gas storage cylinder fixedly installed at one end of the gas conveying pipe second. The technical effect is to automatically adjust the gas pressure inside the storage tank, avoiding casting pressure fluctuations caused by a drop in syrup level, ensuring consistent weight for each gummy candy, eliminating the impact of pressure fluctuations on the storage tank seals, reducing seal wear and leakage risks, and maintaining a slightly positive pressure environment inside the tank by injecting inert gas into the sealed cavity.

This invention discloses a high-speed side-push type carton packing system in the field of packaging equipment technology, including: a frame and a feeding and conveying mechanism, a stacking mechanism, a storage mechanism, an opening mechanism, a packing mechanism, and a sealing mechanism mounted on the frame. The opening mechanism is used to pick up the packaging cartons stacked on the storage mechanism and unfold them so that the opening of the packaging carton faces horizontally. The packing mechanism includes a support and a push plate, a limiting baffle, and a first driving component mounted on the support. This invention abandons the traditional vertical gravity unloading method and instead adopts a side-push horizontal packing method. The first driving component precisely controls the push plate's movement, smoothly pushing the vertically stacked items from the side into the unfolded packaging carton, eliminating the impact and vibration generated during the free fall of materials, avoiding the risk of breakage of fragile items during packing, and ensuring the consistency and integrity of the product's posture before and after entering the carton.

This utility model discloses a sliding rod-linked three-state transformation wheelchair mechanism, including a backrest structure, a seat structure, an armrest structure, a posture transformation structure, a chassis structure, foot pedals, front wheels, and rear wheels. This utility model uses an electric push rod hinged at one end to the front chassis rod to drive a sliding rod to slide on a slide rail. Simultaneously, the sliding rod links two actuators: one pulls the sliding rod-backrest linkage rod connected to the backrest, causing the backrest support to rotate around the hinge axis between the backrest pivot and the seat pivot; the other pulls the movable ends of the rear and front links of a four-bar linkage mechanism, with the seat as the movable link and the frame end hinged and fixed to the side chassis rod. This synchronously drives the rotation of the backrest and the rotation of the rear and front links of the four-bar linkage mechanism, achieving coordinated transformation of the backrest angle and the seat posture. This utility model integrates a push rod-slide rail-linkage integrated power transmission chain, which can simultaneously decompose a single-point linear driving force into a composite action of backrest rotation and seat displacement.

The utility model relates to the technical field of axial flow pump, and disclose a kind of axial flow pump using double-end face mechanical seal, including pump shell, the upper portion of pump shell is equipped with fixed shell, the upper end of fixed shell is equipped with motor, and the output end drive connection of motor towards fixed shell inside is equipped with rotating shaft, and rotating shaft is at the connecting place of fixed shell and pump shell and is provided with double-end face mechanical seal assembly, and water hammer elimination mechanism consisting of first chamber and second chamber is set in the connecting sleeve of fixed shell, using the cooperation of first chamber side inverted conical structure, bottom port sectorial resistance block, inner inclined limit rod and spring, when water hammer rushes to first chamber, sectorial resistance block is preliminary buffered under the extrusion of spring, and then the water hammer of second chamber from the gap between sectorial resistance block is secondarily buffered by sealing resistance block, effectively eliminate the impact force generated by water flow in pump shell water outlet elbow pipe part, avoid the damage caused by impact force to axial flow pump and pipeline, improve the use safety and stability of axial flow pump and pipeline.

This invention discloses a soft-switching control circuit and method for a power conversion device, electrically connected to both the power conversion device and an AC power supply. It includes a first relay and a second relay, with the power conversion device electrically connected to the AC power supply sequentially via either the first relay and the second relay or sequentially via the second relay and the first relay. The two ends of the second relay are connected in parallel to the two pins of a thyristor. The invention also includes a controller electrically connected to the first relay, the second relay, and the thyristor. The beneficial effect is that it ensures that both series-connected relays are in a zero-current or near-zero-current state at the instant of closing and opening. This fundamentally eliminates the huge surge current and arc erosion and impact on the contacts caused by traditional switching methods.

The utility model relates to microorganism strain proportioning technical field discloses a kind of experimental devices for microorganism strain proportioning, including jar body, installation position is opened in jar body;Mixed component, mixed component is set in jar body, and mixed component is used to proportion and mix to microorganism strain, and mixed component includes driving motor, movable frame, auger shaft and fixed block, driving motor is fixedly connected with jar body, movable frame is set in jar body, movable frame is drivingly connected with driving motor, auger shaft array is set in jar body, each auger shaft is drivingly connected with driving motor, multiple fluid effects are formed by the cooperation of mixed component internal parts, under the cooperation of multiple fluid effects, avoid in stirring Large amount of foam covers liquid surface to hinder oxygen dissolving, lead to aerobic bacteria growth is limited;Foam layer hinders liquid flow, causes local strain or nutrient concentration difference;Foam occupies reactor space, reduces actual utilization rate and other problems.

This invention relates to the field of vehicle control for new energy vehicles, specifically to a braking energy recovery resistor device and control method for new energy vehicles under high SOC conditions. The device includes a vehicle control unit (VCU), a battery management system (BMS), a multi-function device, a high-voltage wiring harness, a drive motor, a braking resistor control unit, a braking resistor module, a temperature sensor, a cooling module, and a high-voltage contactor. The BMS and the multi-function device are communicatively connected to the VCU. The braking resistor control unit is also communicatively connected to the VCU. The multi-function device is connected to the power battery, drive motor, braking resistor module, and high-voltage wiring harness. The control terminals of the multi-function device and the braking resistor control unit are connected, enabling real-time information exchange and intelligent control. This invention aims to achieve uninterrupted electric braking under high SOC conditions, stable bus voltage, battery overcharge protection, long-term reliable resistor operation, and improved braking smoothness and safety.

This invention relates to a compact spring return actuator, and more particularly to an actuator for emergency reset of a valve in the event of an emergency such as a power outage. The actuator is equipped with differential planetary gear reducers in both the drive shaft (operated by a motor) and the working shaft (operated by an elastic body of the emergency reset assembly), and these differential planetary gear reducers are meshed together. This duality allows the power transmission of the motor and the elastic body to be independent of each other, thereby reducing motor capacity and miniaturizing the components of the power transmission system. Ultimately, this results in a compact spring return actuator that is lightweight and miniaturized as a whole. To achieve the objectives described above, the compact spring return actuator of the present invention is characterized by comprising: a drive shaft that receives power from a motor and rotates; a driven shaft that rotates by means of the drive shaft and opens and closes a valve; a reduction assembly that reduces the rotational force transmitted to the driven shaft, including a differential planetary gear reducer mounted on the drive shaft; and an emergency reset assembly equipped with an elastomer and a working shaft that converts the elastic force of the elastomer into a rotational force for transmission and engagement with the differential planetary gear reducer, for rotating and resetting the valve when the power is disconnected.

The utility model discloses a kind of heavy hydraulic machine proportional servo flexible energy-saving control hydraulic systems, belong to heavy hydraulic machine technical field, this kind of heavy hydraulic machine proportional servo flexible energy-saving control hydraulic system, including oil cylinder, oil cylinder includes oil cylinder control valve group unit, pipeline pressure relief valve group unit and return control valve group unit, oil cylinder control valve group unit, pipeline pressure relief valve group unit and return control valve group unit inside are provided with proportional cartridge valve;Oil cylinder further includes main pump group control unit and pilot control unit, displacement sensor is respectively arranged in main pump group control unit and pilot control unit, and oil cylinder control valve group unit and pilot control unit are electrically connected with pipeline pressure relief valve group unit and return control valve group unit respectively, oil cylinder control valve group unit and pilot control unit are electrically connected with pipeline pressure relief valve group unit and return control valve group unit respectively by control circuit, to realize collaborative control.

The application discloses a high-precision global fitting method and device based on dominant points, relates to the technical field of computer numerical control machining, and specifically comprises the following implementation steps: firstly, taking the cubic polynomial fitting error as the core basis, dominant points in a tool tip point set are adaptively screened; secondly, according to a point error constraint condition, part of the tool tip points are supplemented as new dominant points through an iterative mode, and then an initial B-spline curve is generated; finally, based on a chord error constraint criterion, part of the midpoints of straight line segments are iteratively supplemented as dominant points, and finally, a target B-spline curve is constructed. The global fitting method effectively optimizes the continuity of the path and the degree of restoration of geometric characteristics under the premise of strictly guaranteeing machining precision, provides a high-quality data basis and technical support for subsequent feed speed planning, and is favorable for improving the overall machining efficiency.

The application relates to the technical field of diaphragm compressors, in particular to a diaphragm compressor oil cavity structure and a diaphragm compressor. The diaphragm compressor oil cavity structure comprises the following: an oil side membrane head is provided with an oil distribution disc and an oil cylinder sleeve; a piston is arranged in the oil cylinder sleeve; a diaphragm is arranged between the oil distribution disc and the gas distribution disc; a space between the diaphragm and the piston constitutes an oil cavity; a flow inducer is arranged in the oil cavity between the oil distribution disc and the oil cylinder sleeve, and the flow inducer is suitable for guiding hydraulic oil to flow from the periphery of the flow inducer so as to block the hydraulic oil from directly impacting the central area of the diaphragm. According to the application, the flow inducer is arranged in the oil cavity, the hydraulic oil driven by the piston first passes through the flow inducer to change the flow field characteristics, the flow of the hydraulic oil after the flow induction is more uniform, and then the diaphragm is driven to deform through the oil distribution disc; the hydraulic oil after the flow induction no longer impacts the central area of the diaphragm, the deformation environment of the diaphragm is improved; the impact force of the hydraulic oil on the central area of the diaphragm is eliminated, the service life of the diaphragm is prolonged, and the efficiency of the diaphragm compressor is improved.