34results about How to "Avoid overflow loss" patented technology

The invention discloses a vacuum formation method of a lithium ion battery. In the method, an electrolyte injection process and a formation process of the battery are completed by adopting an integrated fixture with electrolyte-injecting and charging functions and a vacuum formation device with charging and vacuumizing functions. The vacuum formation device charges the battery arranged in the integrated fixture, and the battery is electrically connected with the vacuum formation device by the integrated fixture. The vacuum formation method of the invention provides an enclosed and controllable microenvironment, thereby reducing electrolyte waste, avoiding overflow loss of electrolyte and corrosion on a battery casing, the fixture or charging equipment, and effectively reducing environmental pollution.

The invention belongs to the technical field of network communication, and discloses a best-effort flow scheduling method for a time sensitive network. The method comprises the following steps: acquiring current time sensitive network data; selecting a set of frames from the cache that maximizes the best-effort flow bandwidth utilization; obtaining a best-effort flow scheduling result; and scheduling the best-effort flow. According to the method, the bandwidth utilization rate of the best-effort flow time slot is maximized in each bandwidth period in the Qbv protocol, and the bandwidth resource utilization rate of the best-effort flow is improved. Along with accumulation of bandwidth periods, the utilization rate of bandwidth resources is increased to a great extent in terms of overall service.

The invention discloses a novel robot hydraulic joint drive system. The novel robot hydraulic joint drive system comprises a motor, a hydraulic pump and a double-action piston rod cylinder. The motoris connected with the hydraulic pump. An oil inlet way and an oil return way are formed between the hydraulic pump and the double-action piston rod cylinder in parallel. The part, from the hydraulic pump to the double-action piston rod cylinder, on the oil inlet way is sequentially provided with a first high-pressure energy storage mechanism, a second high-pressure energy storage mechanism and a first proportional valve or a first servo valve. The first high-pressure energy storage mechanism comprises a first one-way valve and a first high-pressure energy accumulator forming a first loop. Thefirst loop communicates with the oil inlet way through a first three-position four-way electromagnetic reversing valve. The second high-pressure energy storage mechanism comprises a second one-way valve and a second high-pressure energy accumulator forming a second loop. The second oil way communicates with the oil inlet way through a second three-position four-way electromagnetic reversing valve.The novel robot hydraulic joint drive system solves the problem that an existing hydraulic drive system is large in energy loss.

The invention provides an electro-hydraulic-servo-driven valve controlling device. The valve controlling device comprises a pinion-and-rack hydraulic cylinder, two sets of electro-hydraulic servo power sources and an electronic control part. The electronic control part comprises a controller, a displayer, a control switch and an angle transducer, wherein the displayer, the control switch and the angle transducer are connected with the controller. The angle transducer is fixed to the upper portion of the pinion-and-rack hydraulic cylinder. A rotating shaft of the pinion-and-rack hydraulic cylinder is connected with a rotating shaft of the angle transducer. The rotating shaft of the pinion-and-rack hydraulic cylinder is connected with a rotating shaft of a valve. Each set of electro-hydraulic servo power source comprises a bidirectional gear quantitative hydraulic pump, an alternating-current servo motor, a pressure oil tank and a double-hydraulic control one-way valve which are connected with the controller. Output shafts of the alternating-current servo motors and input shafts of the hydraulic pumps are connected. The pressure oil tanks are communicated with low-pressure oil suction openings of the hydraulic pumps through the one-way valves. Two outlets of the bidirectional gear quantitative hydraulic pumps of the two sets of electro-hydraulic servo power sources are communicated with the hydraulic cylinder through the double-hydraulic control one-way valves. The valve controlling device has the beneficial effects of being good in reliability, capable of saving energy and efficient.

The invention relates to the field of quadruped robot hydraulic systems, and discloses a quadruped robot hydraulic system based on two-stage energy supply and loading opening independent valve control. The quadruped robot hydraulic system comprises a hydraulic two-stage oil source unit as well as a first hydraulic driving unit and a second hydraulic driving unit based on loading opening independent valve control; and the first hydraulic driving unit and the second hydraulic driving unit are connected with the hydraulic two-stage oil source unit through a high-pressure bus, a low-pressure bus and an oil return bus. Through design of the hydraulic two-stage oil source unit as well as the first hydraulic driving unit and the second hydraulic driving unit which are located on the two stages and based on loading opening independent valve control, two kinds of pressure are adopted for energy supply, pressure switching is realized through a pressure switching valve, an outlet of the hydraulicdriving unit in the working process is throttled, and meanwhile, an inlet throttling valve is ensured to be in the large-opening state, so that the efficiency of the hydraulic driving unit can be improved, the energy consumption of the hydraulic driving unit can be reduced, and the efficiency is improved.

The invention discloses a hinging-type dump truck chassis. The hinging-type dump truck chassis comprises a steering system, a braking system, a drive system and a driving system, wherein the driving system comprises a truck frame assembly, the truck frame assembly comprises a front truck frame, a hinging body and a rear truck frame, a front axle is arranged below the front truck frame, a middle axle and a rear axle are arranged below the rear truck frame, one end of a left front hydro-pneumatic suspension unit and one end of a right front hydro-pneumatic suspension unit are connected to the upper surfaces of the left side and the right side of the front axle respectively, the other end of the left front hydro-pneumatic suspension unit and the other end of the right front hydro-pneumatic suspension unit are connected with the front truck frame, a right front cross pull rod, a front V rod and a left front cross pull rod are installed between the front truck frame and the front axle, themiddle axle is connected with the rear axle through a left balancing beam and a right balancing beam, a right middle cross pull rod, a middle V rod and a left middle cross pull rod are installed between the rear truck frame and the middle axle, and a right rear cross pull rod, a rear V rod and a left rear cross pull rod are installed between the rear truck frame and the rear axle. The hinging-typedump truck chassis is simple in structure, safe and reliable, and can effectively improve the trafficability and the comfort of the complete machine.

The invention relates to a plate welding method adopting laser penetration. A laser welding head, a high-pressure gas column nozzle and a protective gas spraying pipe can move relative to base materials, when the temperature of the back surfaces of the base materials reaches or exceeds a gasification temperature value of the base materials, the laser welding head and the high-pressure gas column nozzle are rotated, so that the laser welding head is inclined relative to the upper surfaces of the base materials, and the high-pressure gas column nozzle is in vertical alignment with the upper surfaces of the base materials; and a gas supply valve of the high-pressure gas column nozzle is controlled so that inert gas columns can be sprayed by the high-pressure gas column nozzle to penetrate through welding keyholes. The invention further relates to a laser welding system, and the laser welding head and the high-pressure gas column nozzle can move relative to the base materials so that the laser welding head and the high-pressure gas column nozzle can be switched between a first state and a second state. According to the plate welding method adopting laser penetration, high-pressure superfine gas columns are adopted to assist in maintaining the keyholes, so that discontinuous penetration of the keyholes and the loss of laser energy overflow in the penetration welding process are avoided, and the stability of the keyholes and the energy utilization rate are improved.

The invention relates to the technical field of robots, and discloses a hydraulic two-stage oil source for supplying energy through a two-stage energy accumulator. The hydraulic two-stage oil source comprises the energy accumulator, a switching valve A, a switching valve B, a constant displacement pump and an overflow valve. The energy accumulator comprises a high-pressure energy accumulator bodyand a low-pressure energy accumulator body. Through the arrangement of the high-pressure energy accumulator body and the low-pressure energy accumulator body, the degrees that gas is compressed in theoil charge process and the oil drainage process are different, and the oil pressure in the energy accumulator changes constantly; when the working cycle of the energy accumulator is smaller than 3 min, it can be considered that the energy accumulator works under the adiabatic condition; when the energy accumulator serves as an auxiliary power source, the inflation pressure should be lower than 90% of the lowest work pressure and higher than 25% of the highest work pressure, at this moment, the pressure change range in the energy accumulator does not exceed 20% of the work pressure, and the energy supply requirement of a hydraulic drive unit is met; and in the process that the energy accumulator stores and releases energy, less energy is lost, the requirement of a quadruped robot hydraulicsystem for energy consumption is completely met, and reasonable parameter selection is achieved.

The invention relates to a proportional valve and servo valve testing table. The table comprises an oil tank and a test valve group, wherein the oil tank is provided with an oil outlet pipe. The oil outlet pipe from the oil tank to the test valve group is sequentially provided with an oil pump, an oil filter, a pressure gage and an energy accumulator; the test valve group comprises a flow measuring device, a first three-way ball valve, a second three-way valve and a two-way ball valve; the three ports of the first three-way ball valve are separately connected with an oil outlet of the oil outlet pipe, one of the end of the flow measuring device, and an oil inlet of an oil return pipe; the three ports of the second three-way ball valve are separately connected with an oil outlet of the oiloutlet pipe, the other end of the flow measuring device and the oil inlet of the oil return pipe; the joint of the first three-way ball valve and the oil return pipe is arranged above the two-way ballvalve; and the oil outlet of the oil return pipe is connected with the oil tank. According to the table, most of the hydraulic oil in the testing process is supplied by the energy accumulator, so that the motor capacity is greatly reduced, and the problem of equipment noise is also completely solved.

The invention relates to the field of furniture and particularly discloses an automatic accompanying bed. The automatic accompanying bed comprises at least three bottom plates, wherein the adjacent bottom plates are hinged, a buffer layer is fixed to the top of each bottom plate, supporting legs are fixed to the bottom of the bottom plate at one side, and a supporting frame is hinged to the bottomof the bottom plate at the other side; a pull rope is fixed to the bottom plate where the supporting legs are fixed, and a stepping motor capable of rolling the pull rope is fixed to the supporting frame; a heating cavity is formed in each bottom plate, a plurality of hot air channels are formed in the top wall of each heating cavity, a piston is connected into each hot air channel in a verticalsliding mode, each piston is higher than the top of the corresponding bottom plate, a spring is fixed between each piston and the inner wall of the corresponding heating cavity, and each piston is provided with an exhaust channel which communicates with the corresponding heating cavity in the slide-down process; and each buffer layer is provided with a plurality of through holes, and each heatingcavity communicates with an air-in piece and a heating piece. According to the scheme, the accompanying bed can be unfolded slowly and automatically without being unfolded by manpower completely, andthe situation that a large sound is generated in the unfolding process is avoided.

The invention provides a valve control method and device, a valve, a storage medium and an electronic device. The method comprises the following steps that a flow value of a medium passing through a pipeline is collected; whether the flow value exceeds a first preset threshold or not is judged; and when the flow value exceeds the first preset threshold, a motor is controlled to close the valve ofthe pipeline. According to the method and device, the valve, the storage medium and the electronic device, the technical problem that in the prior art, the valve cannot be automatically controlled issolved.

The invention discloses a data communication method and system and a spiking neural network operation system, and the data communication system comprises a first interface module, a data frame buffer module, a second interface module and a control module. The first interface module is used for receiving data transmitted by an upper computer through the first bus, converting downlink data frames, reading uplink data frames, converting the uplink data frames and sending the uplink data frames to the upper computer through the first bus. The data frame caching module is used for caching downlink data frames and uplink data frames; the second interface module is used for reading the downlink data frame, converting the downlink data frame into a pulse according to a chip protocol, transmitting the pulse to the pulse neural network chip, and converting the received pulse into an uplink data frame according to the chip protocol; the control module is used for controlling data transmission interaction between the first interface module and the upper computer and data transmission interaction between the second interface module and the pulse neural network chip. According to the invention, data transmission of large data volume can be realized.

The invention discloses a shunting motor speed change synchronizing system resisting the time-varying large eccentric load and belongs to the field of hydraulic synchronous control. The system comprises a load sensing variable pump, a proportional direction valve, shunting motors, a pressure compensating valve, a reversing valve and an execution element which are connected sequentially. The shunting motors are arranged in a multi-line manner. An oil outlet of each line of shunting motor is connected with an executor branch. Speed change synchronous driving of multiple hydraulic executors is achieved. The invention further discloses a working method of the speed change synchronizing system. By means of the four links of speed changing, shunting, pressure compensating and load sensing, high-precision and high-efficiency speed change synchronous driving control under the working circumstances of the large eccentric load or the time-varying load can be achieved, the system is simple in structure, high in reliability and particularly applicable to synchronous driving in a severe environment, the influence on the shunting precision from the eccentric load can be eliminated thoroughly, and the interference of the time-varying load can be resisted.