16results about How to "Reduce reserves" patented technology

The invention discloses an automatic personnel allocation method and system suitable for an MES system, a medium and equipment, and the method comprises the following steps: S1, defining a skill label: defining the skill label, and obtaining and storing the skill label of an employee; s2, skill corresponding process: establishing a corresponding relationship between the skill label and the process; s3, production data acquisition: acquiring working data of the employees in a production process in real time; s4, data analysis: generating an employee portrait, and generating an employee skill feature median; s5, optimizing process parameters: adjusting process guidance parameters according to the skill characteristics of the employees in the step S4, and optimizing the production process; and S6, automatically allocating processes: recommending an optimal personnel combination according to the employee portraits and the processes involved in the production plan. The system has the advantages that the skills of the employees and the deficient skills are mastered, so that the employees are accurately allocated to proper posts, and the storage of human resources of enterprises and the reduction of labor cost are facilitated.

The invention discloses a low-cost alkaline medium oxygen evolution catalyst as well as a preparation method and application thereof, and relates to the technical field of electrochemistry. The preparation method comprises the following steps: step 1, mixing an iron metal source and a cobalt metal source, and preparing a salt solution A with a certain concentration; step 2, washing foamed nickel or a nickel metal source with concentrated hydrochloric acid and deionized water, drying, placing in the salt solution A, and standing for a certain time after ultrasonic treatment; step 3, preparing an alkali solution B with a certain concentration from an alkali solution source; slowly dropwise adding the alkali solution B into the salt solution A to precipitate metal ions; and step 4, taking out the foamed nickel or the nickel metal source in the solution, washing with deionized water and absolute ethyl alcohol, and drying to prepare the oxygen evolution catalyst. The oxygen evolution catalyst disclosed by the invention can be used for preparing a self-supporting OER electrode for catalyzing oxygen evolution, and has the advantages of low cost, high catalytic activity, capability of realizing large-scale production, relatively low environmental influence and the like.

The application relates to the field of workpiece production operations, and discloses a skid changing system, a scissor clamping mechanism and a flow line. The skid changing system comprises a skid assembly, a skid changing conveying line, a lifting assembly and an adjusting and positioning assembly. The skid assembly comprises multiple uniform skids with the same model and multiple non-uniform skids with different models. The skid changing conveying line can alternately input the uniform skids and the non-uniform skids. The lifting assembly can lift a workpiece carried by a previous skid input to the skid changing conveying line and place the workpiece on a next skid. The adjusting and positioning assembly can adjust and position the relative position of the lifting assembly and the skid with any model input to the skid changing conveying line. The flow line can realize collinear skid changing of workpieces with different models, reduces the investment cost of equipment and improves production efficiency.

The invention discloses a gas-liquid separator, a heat pump system and a control method, and the gas-liquid separator comprises a tank body, a working medium pipe assembly and a heat exchange assembly; an accommodating cavity is formed in the tank body; the working medium pipe assembly comprises a working medium inlet pipe, a working medium outlet pipe and a high-pressure air pipe which are arranged on the tank body at intervals, one part of the working medium inlet pipe is located outside the tank body, the other part of the working medium inlet pipe is located in the containing cavity and used for communicating with the containing cavity, and one part of the working medium outlet pipe is located outside the tank body, and the other part of the working medium outlet pipe is located in the containing cavity and used for communicating with the containing cavity. The high-pressure air pipe penetrates through the tank body, and the two ends are located outside the tank body; the heat exchange assembly is arranged in the containing cavity and arranged on the pipe section, located in the containing cavity, of the high-pressure air pipe. According to the technical scheme, efficient heat exchange of the gas-liquid separator can be achieved.

This utility model discloses a low-power power control board for electronic devices, including a main board and a sub-board. The main board has a recessed portion below it, with a limiting hook on one side of the recessed portion. Pressing posts are inserted into both sides of the sub-board, with a ring stop block in the middle of each pressing post. A spring is provided between one side of the ring stop block and the inner wall of the inner ring groove of the sub-board. A positioning post is provided in a placement portion within the sub-board, with a rotating positioning hook block sleeved around its middle. A pin is located below the positioning hook block, with both ends of the pin inserted into two driving blocks at the inner end of the pressing post. A conductive sheet is provided in a slot portion of the main board, and a post and conductive block are provided on top of the sub-board. By installing replaceable sub-boards below the main board, the power control board only needs to be replaced with different models of sub-boards during operation, reducing the number of spare power control boards and making it easy to carry.

A swing arm is sleeved on a driving shaft, the other end of the swing arm is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a knife switch, the knife switch is hinged to a knife holder, and the driving shaft drives the knife switch to switch among three states of opening, closing or grounding through the swing arm and the connecting rod. When the switch is in a closing position or a grounding position, better force application angles are formed between the swing arm and the connecting rod, between the connecting rod and the switch blade and between the swing arm and the switch blade, and the switch blade can obtain larger torque, so that the switch blade is easy to open in the closing position or the grounding position.

The present invention discloses a multifunctional floor-cleaning and vacuum-cleaning integrated machine, including a frame structure, a water-absorbing crawling head system, a battery, a ball valve system, a brush plate system, a walking system, a water tank chassis, a decorative cover, a dirt collection system, a glass door and window cleaning system, and an integrated switch system, wherein the water tank chassis serves as a supporting bottom plate, and the walking system is connected to both ends of the bottom surface of the water tank chassis. The present invention realizes one machine with multiple functions, allowing users to use one machine to meet different operating requirements. Compared with the roto-molded parts mainly used in the industry, the output per unit time is greatly increased, the cost is reduced, and resources are saved; the machine structure is simplified; the machine uses lithium batteries, which greatly reduces the weight of the machine compared to the lead-acid batteries currently used in the industry, and integrates the functions of a floor scrubber, a cleaning vehicle, a vacuum cleaner, and a glass cleaning machine.

The utility model relates to a beehive pollen removing structure, and relates to the field of bee breeding. The bee pollen removing device comprises a pollen removing plate and an adjusting assembly installed on the pollen removing plate, strip-shaped holes allowing bees to pass through are transversely formed in the front face of the pollen removing plate, a blocking structure between every two adjacent strip-shaped holes is named as a partition strip, and installation holes are formed in the partition strips in the length direction of the partition strips; the adjusting assembly comprises a plurality of adjusting rings and a plurality of adjusting rods, each adjusting ring is of an unclosed annular structure, one end of each adjusting ring is fixed to the corresponding parting strip, an adjusting pipe is fixed to the other end of each adjusting ring, and each adjusting pipe penetrates through the side wall of the corresponding parting strip and extends into the corresponding mounting hole of the corresponding parting strip; and the adjusting rod is rotationally connected in the mounting hole and is in threaded connection with the adjusting pipe. By means of the device, a worker can conveniently and rapidly adjust the size of the adjusting ring, and therefore the device is suitable for bees of different types and sizes.

The present invention belongs to the technical field of casting molds, and specifically is a gate pressurized wheel hub casting mold and a casting method thereof, the casting mold comprising a workbench, a mold and a pressurizing mechanism; a mold is installed at the center position of the workbench, the mold comprises a No. 1 mold, a No. 2 mold, a No. 3 mold and a No. 4 mold, the No. 1 mold is located at the top of the mold, the No. 2 mold and the No. 3 mold are located in the middle of the mold, and the No. 4 mold is located at the bottom of the mold; through the cooperation between the mold and the pressurizing mechanism, the pressurizing mechanism squeezes the molten metal through the runner, so that the flow speed of the molten metal into the cavity through the runner is increased, thereby increasing the shrinkage compensation effect of the molten metal on the wheel hub during cooling, thereby improving the casting quality of the wheel hub, and avoiding the reduction of the shrinkage compensation effect of the molten metal on the wheel hub during the cooling process of the wheel hub, resulting in more shrinkage holes or shrinkage in the wheel hub.

The application discloses an environment-friendly recycling treatment equipment for waste concrete, which comprises a vibrating feeder, a coarse crushing unit, a fine crushing unit, a vibrating screening machine and a plurality of belt lifting conveyors. The plurality of belt lifting conveyors are respectively arranged between the vibrating feeder and the coarse crushing unit, between the coarse crushing unit and the fine crushing unit, and between the fine crushing unit and the vibrating screening machine. The coarse crushing unit is a jaw crusher. The hydraulic floating gap adjusting structure can realize the elastic yielding structure with adjustable yielding force, controllable stroke, automatic reset and no influence on normal crushing granularity, can ensure that the hard objects can smoothly pass through, will not be stuck and broken, and is suitable for the treatment of waste concrete. In the modular movable tooth roller structure, the tooth plate can change the installation angle during installation. A single tooth plate can realize two-state installation. When only the installation angle of the tooth plate is changed without changing the tooth shape, other tooth plates do not need to be changed, and only the installation state needs to be changed.

The utility model belongs to the technical field of die-casting dies, and particularly relates to a universal rack die-casting die convenient for die replacement, which comprises a fixed rack, a movable rack and an ejector pin, a detachable lower mold core and a detachable upper mold core are respectively arranged in the fixed rack and the movable rack; pin rods are transversely mounted in the fixed rack and the movable rack in a sliding manner, plug rods are separately connected to the end parts of the pin rods, and a frame connecting plate is connected between the lower mold core and the upper mold core and between the outer walls of the lower mold core and the upper mold core; the plug rod is divided into a thin shaft body and a thick shaft body. The die core can be directly taken out for cooling after die-casting operation, so that the machine frame shell of the die continues to be subjected to die-casting operation, the die is suitable for continuous production operation, different die cores can be directly replaced in the mode, and therefore the die is suitable for die-casting operation of different products.

The modular heavy buffer bed provided by the invention is composed of three parts, namely a bottom frame, a groove angle bracket and a buffer strip also called as a buffer block, and the bottom frame and the groove angle bracket form a rack for supporting the buffer strip to complete the function of the buffer bed; the groove angle supports are formed by bending steel plates, groove angle holes are drilled in the groove angle inclined faces and used for installing the buffer strips, and the groove angle supports are installed on long holes in the two ends of a bottom frame cross beam through bottom connecting plates, can move inwards and outwards and are used for adjusting the distance between the upper planes of the buffer strips and the bottom face of a conveyor rubber belt. The machine frame has the beneficial effects that the machine frame is made of galvanized steel sheet profiles or other steel sheet profiles, and except for special requirements, all the components can be made into standard component structures.

The present application provides a kind of mine no ventilation working face mining system and method, it is related to coal mining technical field, the mining system includes L type working face;Coal winning machine, be arranged in L type working face, for completing coal wall cutting, roof support and coal transportation;Air door, be arranged in the position of transport drift near with auxiliary transport roadway junction, for closing the entrance of L type working face, to form closed space;Low temperature nitrogen injection system, be arranged in auxiliary transport roadway, its output end passes through air door, for the nitrogen gas that is transported to L type working face after cooling treatment, make the oxygen concentration in L type working face drop to below 5%, temperature is maintained at 20~25 ℃, and keep positive pressure state;Exhaust system, be arranged in return air roadway, its input end passes through air door, for the gas of L type working face is discharged.Compared with the traditional ventilation system, the present application system realizes the near zero carbon emission of coal mining process, can reduce more than 90% of gas emission and more than 95% of dust emission.

The invention relates to the technical field of frequency digging transformation, in particular to an intensive frequency digging transformation method for upgrading and updating of a frequency converter, which comprises the following steps of: removing kernel components of an old frequency converter, including a rectification unit and an inversion unit; a basic framework structure and a communication programmed control system of original equipment are reserved; installing a new high-performance frequency converter kernel component, and accessing an original PLC system through a DP bus protocol; pLC program control software and a communication protocol are updated and upgraded, and the compatibility of a new system and an original system is ensured. The reserved original equipment comprises a control cabinet box body, a bus copper plate, a PLC system and a driving motor peripheral, an electric driving system is integrated and replaced, so that leap-type improvement in performance and great reduction in research and development cost are achieved, and the control cabinet is suitable for being applied to integration of various systems and various projects. Vector control and servo control can be achieved in an optimized mode, and single-machine and multi-machine transmission work of complex tasks can be met.

The invention provides a speed reducer and a vehicle, the speed reducer is connected with an output shaft of a driving motor, and the speed reducer comprises a shell assembly, a speed reduction assembly and a pumping assembly. The shell assembly is provided with a first accommodating space; the speed reduction assembly is arranged in the first containing space, and the first containing space is configured to contain oil liquid used for lubricating the speed reduction assembly. The pumping assembly is used for pumping oil to a to-be-lubricated area of the speed reduction assembly and comprises an oil pump and an oil pipe connected with the oil pump, the oil pump is arranged outside the first containing space, and the oil pipe is arranged in the first containing space; wherein a transmission channel and an oil collecting pool are formed on the shell assembly, the transmission channel is matched with the oil pipe to be used for transmitting oil to a plurality of to-be-lubricated areas of the speed reduction assembly and is communicated with the transmission channel or the oil pipe, and the oil stored in the oil collecting pool can be conveyed to a to-be-cooled area of the driving motor. In this way, the transmission efficiency and the HVN performance of the speed reducer can be effectively improved.

This utility model discloses a positioning fixture for bearing manufacturing and processing, including a base and a movable jaw and a fixed jaw respectively disposed on the base. The movable jaw and the fixed jaw are arranged opposite to each other to form a workpiece clamping space. The base is provided with a driving component that can drive the movable jaw to move closer to or away from the fixed jaw. The movable jaw includes a slider and a first clamping block rotatably disposed on the slider. The first clamping block has a plurality of first arc-shaped clamping surfaces evenly distributed along its circumference, and the plurality of first arc-shaped clamping surfaces can protrude outward one side of the slider as the first clamping block rotates. The fixed jaw includes a second clamping block rotatably disposed on the base. The second clamping block has a plurality of second arc-shaped clamping surfaces evenly distributed along its circumference, and the plurality of second arc-shaped clamping surfaces are arranged in a one-to-one correspondence with the plurality of first arc-shaped clamping surfaces. The base is provided with a locking component that can simultaneously lock the rotation of the first clamping block and the second clamping block.