87 results about "Load unit" patented technology

The invention provides an intelligent boxing method and system. The intelligent boxing method comprises the steps of obtaining boxing task information and generating a boxing scheme. The boxing task information comprises the size, the weight, the stacking limitation, the number and the priority of each cargo, and the size, the bearing capacity and the occupation state of each loading unit. And under the condition that the size, bearing and stacking constraint conditions are met, a plurality of candidate boxing combinations are generated, the loading utilization rate, the residual space distribution and the shape matching degree are evaluated based on a preset optimization target, and an optimal scheme is selected. The system comprises an input terminal, a task information receiving module, a data storage module, a task and scheme storage module, an operation processing module and a final boxing scheme generation module. According to the method, multi-dimensional constraint matching and weight balance are considered, and space waste and transportation risks are avoided; the maximum greedy algorithm and the adaptive large neighborhood search optimization are combined to realize the combination of automation and experience. The method can be expanded to batch task scheduling and grouping sequencing, so that the calculation complexity is reduced, and the overall boxing and transportation efficiency is improved.

The invention provides a calibration piece and a calibration method for a multi-port waveguide antenna test system, and a test method and a test system for a multi-port waveguide antenna, in the calibration piece, a positioning structure can ensure the repeatability of each connection, which is the premise of high-precision calibration, and the calibration accuracy is greatly improved. The load unit, the offset short circuit unit and the offset load unit are provided with a plurality of waveguide ports which are the same as those of a tested piece and can be directly butted, the internal structure of the waveguide port of the load unit is an antenna, electromagnetic wave energy can be radiated out instead of being absorbed internally, and high precision and stability of the load standard are guaranteed; according to the method, the reference surface can be determined at the interface of the tested piece, the calibration error model can be directly tested on the reference surface, the accuracy is good, and the solved calibration error model contains all time-varying characteristics of the whole test link during each calibration, so that the method can be used for frequently calibrating according to requirements, and the calibration accuracy is high. Measurement errors caused by temperature drift and link loss can be handled, and the efficiency is high.

The invention discloses a vacuum simulation test device of an execution mechanism and a test method thereof. The vacuum simulation test device of the execution mechanism comprises a support, a lifting module connected to the support, a load unit connected to a mobile end of the lifting module, and a driving unit for driving the lifting module to execute a lifting action. The load unit is used for loading an execution mechanism to be tested, and the driving unit drives the lifting module to lift under a set torque and synchronously drives the load unit so as to simulate the stress state of the execution mechanism in a vacuum state. The lifting module, the driving unit and the load unit jointly simulate the vacuum condition of the actuating mechanism under the actual working condition, so that off-line detection of the working condition parameters of the actuating mechanism is achieved, and compared with an existing on-line mode, the cost is lower, the consumed time is shorter, and the equipment testing efficiency is remarkably improved.

The application provides an intrinsic safety power transient energy testing device and method, and relates to the technical field of intrinsic safety power. The device comprises a load module, a control unit, a control terminal and a detection unit. The load module has at least one load, and each load has a plurality of load units. The control unit is connected with the load module through an adaptive interface module, and is used for selecting the connected load unit. The control terminal is connected with the control unit through a communication interface, selects a load unit mapping figure through a graphical user interface, and further selects the corresponding load unit through the control unit, so as to load the selected load unit to the measured intrinsic safety power. The detection unit is used for connecting and detecting the measured intrinsic safety power loaded with the selected load unit, and is connected with the control terminal to upload the detection result to the control terminal. The device changes the test environment by selecting different loads, so that the test of the intrinsic safety power transient energy is more comprehensive.

The present invention provides a technique capable of reducing the time required for measurement while achieving high measurement accuracy. A metering device (1) is provided with a load unit (3) that transmits a load to a load cell (2), and a hanger (5) that is connected to a metering container (4) into which an object to be metered is inserted, and is provided with an upper sleeve-type member (61) and a lower sleeve-type member (62), which are elastic bodies, at a connection site between the hanger (5) and the load unit (3), and between the metering container (4) and the hanger (5). Impact load can be buffered, and vibration can be rapidly attenuated.

The invention relates to a sensing and control device (40) and method for a weight measuring device (30) comprising a loading unit for loading material to be weighed. In order to be able to measure accurately with less expensive components, the sensing and control device comprises an analog circuit (50) and a control circuit (60). The analog circuit (50) is configured to receive a weight measuring signal, to convert the received weight measuring signal into a first voltage signal, to subtract a second voltage signal from the first voltage signal when the loading unit is loaded with material to be weighed to generate a third voltage signal representing the weight of the material to be weighed, the second voltage signal representing the weight of at least the loading unit not loaded with material to be weighed. The control circuit (60) is configured to receive the first voltage signal when the loading unit is not loaded with material to be weighed, to convert the first voltage signal into a first digital signal, and to generate a pulse width modulation, PWM, signal having a pulse width, the pulse width representing the weight measured by the weight measuring device when the loading unit is not loaded with material to be weighed, and the control circuit is further configured to convert the third voltage signal into a second digital signal representing a weight measurement of the material to be weighed. The analog circuit (50) is configured to generate the second voltage signal from the PWM signal generated by the control circuit, wherein the voltage level of the second voltage signal is proportional to the pulse width of the PWM signal.

A storage facility (1) having a plurality of storage racks (R) and storage rack levels (3) for storage of load units (T), wherein two storage racks (R) have an aisle (2) between them, each storage rack level having running rails on the opposing faces of the storage racks (R), on which at least one storage and retrieval apparatus (5) may travel the length of the aisle (2). Each storage and retrieval apparatus (5) has a first set of four traveling wheels for traveling along the running rails horizontally along the respective storage rack level (3) of an aisle (2), and has climbing means for vertical movement, along vertical climbing chimneys. The climbing means of each storage and retrieval apparatus (5) include a set of four climbing wheels (16) being retractable between an extended engaging position for interaction with the vertical climbing rails and a retracted non-engaging position while travelling horizontally along the running rails along the respective storage rack level (3) and the storage and retrieval apparatus (5) has a power-take-up device (60) for contacting the bus bars (50) that is coupled to the retraction and extension movement of the climbing wheels (16).

1. Name of the product in this design: Load module cover (CP8523). 2. Application of this design: This design is used as a cover for a load unit or power supply. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a method and a system for automatically testing direct current parameters of an integrated circuit, and relates to the technical field of electronic component testing. The tested chip is connected with the test system master controller through the special test clamp, and the test system master controller is internally provided with an adjustable voltage source, an adjustable excitation source and an adjustable load. The test system controls and changes the voltage, excitation and load conditions of the tested device through an automatic test program, and controls the processing unit to collect and record data under the conditions. And after acquisition is completed, the test system analyzes the acquired data and finally automatically generates an integrated circuit direct current parameter test report. The system integrates a control processing unit, an adjustable power supply output unit, an adjustable excitation output unit, a signal exchange unit, an adjustable load unit, a transmission cable and a test clamp.

Provided is a refrigeration cycle device having a refrigerant circuit in which equipment is connected by refrigerant piping and a refrigerant circulates, the refrigeration cycle device comprising: a load unit in which the equipment in the refrigerant circuit is mounted, and which is disposed in a target space to be loaded; a refrigerant leakage detection sensor that is disposed in the target space, that detects refrigerant which has leaked with respect to the load unit, and that sends a leakage signal; a load-side control device that is disposed outside the target space, and that controls the equipment in the load unit; and a leakage signal receiver that relays the leakage signal from the refrigerant leakage detection sensor, and that transmits the leakage signal to the load-side control device. The refrigerant leakage detection sensor and the leakage signal receiver are connected by a leakage signal line which is a signal line for transmitting a low-voltage signal, and the leakage signal receiver and the load-side control device are connected by a relay signal line which is a signal line for transmitting a high-voltage signal.

The invention relates to an assembly machining device which is used for feeding a first material part and placing the first material part on a first plate part and comprises a rack. The first material piece is placed on the feeding unit; the discharging unit comprises a transferring mechanism and at least one discharging mechanism, the transferring mechanism is arranged on the rack, and the at least one discharging mechanism is connected with the transferring mechanism; at least one discharging mechanism comprises a mounting plate, a lifting assembly, a connecting base, a rotating assembly and a grabbing assembly, the mounting plate is connected with the transferring mechanism, the lifting assembly is arranged on the mounting plate, the movable end of the lifting assembly is connected with the connecting base, the rotating assembly is mounted on the connecting base, and the grabbing assembly is arranged on the rotating assembly. The movable end of the rotating assembly is connected with the grabbing assembly. According to the automatic assembling device, the efficient and accurate automatic assembling process from the first material piece to the first plate piece can be achieved, the position accuracy can be guaranteed while the assembling efficiency is improved, and therefore the product quality is effectively guaranteed.

The utility model belongs to the technical field of frequency converter energy feedback, and specifically relates to a four-quadrant energy feedback load test system comprising a power supply unit which comprises a plurality of paths of power supply branches with selectable power; the load unit comprises a plurality of paths of load branches with selectable power; an energy feedback control unit, wherein the energy feedback control unit comprises an AFE four-quadrant controller; and a test connection mechanism. Wherein the input end of the AFE four-quadrant controller is connected with the power supply unit through a filter circuit, and the output end of the AFE four-quadrant controller is connected with the load unit through a direct current bus; and the test connection mechanism is used for mechanically connecting the frequency converter to be tested with a load motor in the load unit. According to loads with different large power, under the condition that full-load testing is achieved, energy generated in the testing process can be fed back to a power grid at the same time to achieve bidirectional flow of the energy, and therefore the purpose of full-load testing of the large-power frequency converter is achieved.

The invention discloses a battery expansive force equivalent test device and a test method. The battery expansive force equivalent test method comprises the following steps: step 1, setting independent operation parameters; step 2, performing loading, load holding and unloading tests on a battery pack shell by a loading unit according to the operation parameters; step 3, according to the cycle index in the step 1, circularly executing the step 2 and forming a maximum displacement curve of the cycle index; 4, obtaining a detection result according to the maximum displacement curve of the cycle index in the step 3; by extracting the maximum value of a displacement time curve and associating the maximum value with the cycle index, a maximum displacement curve of the cycle index is formed, and a detection result is obtained according to the maximum displacement curve, so that the limitation of traditional judgment depending on scattered and single cycle data is broken through, the maximum load-holding deformation of each cycle is systematically presented, and the deformation evolution characteristics of the shell are accurately captured; and full-cycle period visualization analysis is realized, and an actual cycle stress scene of the shell is fitted.

The utility model relates to a load-adjustable simulation load capable of independently testing a plurality of power supplies with the same voltage class, which comprises at least three load units with the same topological structure, and each load unit is configured to be formed by connecting at least two load branches in parallel. Each load branch is provided with a branch switch KMRn for controlling the branch to be loaded into the load unit where the branch is located and a resistive load Rn, and a contact at the parallel connection position of each load branch in each load unit serves as a wiring port of the load unit; the wiring port of each load unit is led out to serve as an external interface of an analog load, and the wiring ports of the adjacent load units are connected in parallel through an isolating switch; and the PLC is electrically connected with the controlled end of each switch to realize corresponding electric control.

The utility model discloses an uninterruptible power supply performance test circuit and an uninterruptible power supply performance test device. The test circuit comprises a load test loop which comprises a test connection terminal and a load unit; the test connection terminal is arranged in a power line and is used for being electrically connected with an uninterruptible power supply; the load unit is connected in series in a post-stage line of the test connection terminal. The control loop comprises a control unit, a mode switching unit and a load conversion unit; the mode switching unit is electrically connected between the commercial power and the test connection terminal; the load conversion unit is electrically connected to a load unit, and the load unit comprises at least two loads; the control unit is used for controlling the mode switching unit to switch a preset test mode for testing the uninterruptible power supply; wherein the preset test mode represents a power supply form for the load; and the control unit is also used for controlling the load conversion unit to convert the types of the loads electrically connected with the uninterruptible power supply. According to the technical scheme provided by the embodiment of the invention, the UPS can be subjected to performance test.

The invention provides a load detection device. The load detection device comprises a control assembly, a load switching assembly and a load assembly, the load assembly comprises a load box body, an alternating current load structure and a direct current load structure; the load switching assembly is used for switching the alternating current to be communicated with the alternating current load structure and switching the direct current to be communicated with the direct current load structure; a plurality of ventilation holes are formed in the load box body; each of the alternating current load structure and the direct current load structure comprises a plurality of resistive load units; the resistance load unit comprises a heat dissipation air pipe, a resistance wire and a heat dissipation fan; the resistance wire is used for providing a resistance load, at least one part of the resistance wire is arranged in the heat dissipation air pipe, and the heat dissipation fan is communicated with the interior of the heat dissipation air pipe and at least one ventilation hole; the cooling fan drives airflow to flow through the resistance wire along the interior of the cooling air pipe so as to conduct convection heat dissipation. The load box solves the problems that in the prior art, a load box is poor in compatibility, and the testing efficiency and the heat dissipation efficiency of a load are low.

The application discloses a frequency voltage emergency control method and device considering load unit state, equipment and storage medium, the method first collects the first voltage and the first frequency of each high voltage level bus in the transformer substation, the second voltage and the second frequency of each low voltage level load unit; if the first frequency of any high voltage level bus is lower than the preset low frequency action setting value, and the delay reaches the preset low frequency action delay setting value, the low frequency load shedding function acts, and the first target load unit is cut off according to the preset load unit cut-off priority; if the first voltage of any high voltage level bus is lower than the preset low voltage action setting value, and the delay reaches the preset low voltage action delay setting value, the low voltage load shedding function acts, and the second target load unit is cut off according to the preset load unit cut-off priority. Through the implementation of the application, the mis-cut of the non-fault load unit can be prevented, and the adaptability and action correctness of the low frequency and low voltage load shedding strategy are improved.

The application provides an integrated circuit carrying device. The integrated circuit carrying device comprises a loading unit and a wheel set. The loading unit comprises a loading space, a dust sticking component, a transmission component and a locking component. The dust sticking component is arranged at the bottom of the loading space. The transmission component is arranged above the dust sticking component. The transmission component is used to transmit a container loaded with integrated circuits into the loading space. The locking component is arranged at the entrance of the loading space. The locking component is used to limit the container. The wheel set is arranged below the loading unit.

The utility model discloses an inverter wiring detection circuit and an inverter, and belongs to the technical field of inverters. Comprising a controllable load unit, a voltage detection unit and a control unit, the controllable load unit comprises three load branches formed by connecting a control switch and a power load in series, and the load branches are connected between any phase alternating current output end of the inverter and a zero line output end; the voltage detection unit comprises three voltage sampling loops which are respectively connected with the corresponding load branches in parallel and are used for detecting the voltage of the load branches in real time; and the control unit is connected with the controllable load unit and the voltage detection unit, and is used for controlling on and off of a control switch in the controllable load unit and receiving voltage sampling data obtained by the voltage detection unit. According to the utility model, the detection circuit is integrated in the inverter, so that wiring state diagnosis and active problem discovery can be carried out after installation and before formal power-on operation, and the trouble of passive troubleshooting afterwards is avoided.

A storage facility (1) having a plurality of storage racks (R) and storage rack levels (3) for storage of load units (T), wherein two storage racks (R) have an aisle (2) between them, each storage rack level having running rails on the opposing faces of the storage racks (R), on which at least one storage and retrieval apparatus (5) may travel the length of the aisle (2). Each storage and retrieval apparatus (5) having a first set of four traveling wheels for traveling along the running rails horizontally along the respective storage rack level (3) of an aisle (2) and has climbing means for vertical movement, along vertical climbing chimneys, that include vertical climbing rails (15). The climbing means of each storage and retrieval apparatus (5) include a set of four climbing wheels (16) for interaction with the vertical climbing rails (15). The storage and retrieval apparatus (5) has a drive means (70a) to drive the first set of wheels (10) for horizontal travel and a separate drive means (70b) for driving the climbing wheels (16) for vertical climbing travel or a single drive (80) for both horizontal and vertical travel, which can be switched between the wheels that are driven.

Method for damping loads acting on a loading unit (100) for transporting transport elements (103) in an overload case to protect against damage, wherein measured values ​​(62) about the current state of the loading unit (100) are recorded by a sensor device (61) and wherein at least one damping device (2) is controlled by the measured values ​​(62), characterized by that a shearing device (42) is provided on the loading unit (100) which shears off when the load acting on the loading unit (100) exceeds a predetermined level (66), and that a control device (48) detects an overload case (63) from the recorded measured values ​​(62) when a shear sensor (67) detects shearing of the shear device (42), and that the damping of the damping device (2) is set to a predetermined high value at least immediately after the detection of the overload case (63), and the damping set to a high value is maintained for a predetermined time period (67) after the detection of an overload case (63), and the damping is reduced to a lower damping (71) after the predetermined time period (67) in order to initially increase the load on transport elements (103) transported on the loading unit (100) up to a predetermined limit load (64) and then reduce it after the predetermined time period (67).

This invention relates to an atomizing device and a short-circuit protection method for the atomizing device. The atomizing device includes: a load unit and a load power supply unit for supplying power to the load unit according to its target power; an adjustment voltage generation unit for generating a corresponding adjustment voltage according to the target power of the load unit; a voltage feedback unit for generating a corresponding feedback voltage according to the real-time operating voltage of the load unit; and a controller for confirming whether the feedback voltage generated by the voltage feedback unit and the adjustment voltage generated by the adjustment voltage generation unit satisfy a preset relationship, thereby determining whether the load unit is short-circuited based on the confirmation result, and controlling the load unit to shut down when a short circuit is determined. The preset relationship includes the correspondence between the adjustment voltage of the adjustment voltage generation unit and the feedback voltage of the voltage feedback unit. Implementing this invention can improve the reliability of short-circuit detection and enhance the user experience.

The invention discloses a cable comprehensive quality detection system and method. The system comprises a central processing unit, a load module, a first optical module, a second optical module, a data processing module and the like. The method comprises the following steps: acquiring basic parameters of a cable, limiting a bearing part and a bearing surface, applying pulling forces in different directions by a plurality of load units, combining background light and structured light detection, performing three-dimensional reconstruction to obtain a structural model, analyzing deformation parameters, stress data and surface flaws, establishing and correcting a mechanical property model, and dynamically adjusting loads to generate a quality change curve. And finally determining the quality grade. According to the method, multi-dimensional stress detection is realized, surface flaws and mechanical properties are associated, the comprehensiveness and accuracy of cable quality evaluation are improved, and the method is suitable for cable quality control in a complex scene.

A high-frequency quenching power supply includes: a power supply unit including voltage sources and drivers respectively connected in series with the voltage sources; the load unit is connected with the driver and is used for working under the action of the power supply voltage from the power supply unit; the current detection unit is connected with the load unit and is used for acquiring frequency information of working current of the load unit; the digital phase-locked loop unit is connected with the load unit and is used for performing feedback control according to the frequency information of the working current and generating a driving signal; the input end of the isolation protection unit is connected with the digital phase-locked loop unit, the output end of the isolation protection unit is connected with a driver, and the isolation protection unit is used for transmitting a driving signal to the driver and performing fault isolation protection on the digital phase-locked loop unit and the driver. The high-frequency quenching power supply is small in steady-state error and capable of continuously maintaining stable natural resonant frequency for a long time in a complex and changeable environment and a high-frequency working scene, and the working efficiency of the high-frequency quenching power supply is improved.

The invention provides a micro-grid on-grid and off-grid all-condition simulation circuit, which comprises a data processing unit, a power grid architecture model, an energy storage unit model, a load unit model and a power supply unit model, and is characterized in that the power grid architecture model comprises a section I bus, a section II bus and a power transmission line; the energy storage unit model, the load unit model and the power supply unit model are configured in the range of the I-section bus and the II-section bus in a high-voltage direct hanging mode, and loads in the range of the I-section bus and the II-section bus are unequal. According to the invention, the source, the network, the load and the operation mode of the micro-grid are used as a whole for systematic testing for the first time, and the limitation of traditional single fault simulation is avoided. Potential risks such as grid-connected and off-grid switching failure and voltage collapse can be exposed in advance, and passive-to-active conversion is realized. A simulation result is directly used for guiding energy storage capacity configuration, protection constant value setting, control strategy optimization and equipment type selection, and the success rate and reliability of actual engineering are remarkably improved.

This variable gain amplifier includes: an amplification unit for amplifying an input signal and outputting the amplified input signal; a load unit which has a first end connected to an output end of the amplification unit; and a current control unit for controlling either an amplified current flowing through the amplification unit or a load current flowing through the load unit such that one is changed at a positive rate, and the other is changed at a negative rate.

The invention discloses a mechanical structure and method of a rapid remodeling tester for a three-type speed reducer, and belongs to the technical field of tester design. The tester comprises a driving unit, a transmission unit, a positioning unit and a load unit. The transmission unit comprises a main speed-increasing gearbox, a middle speed-increasing gearbox, a reduction gearbox and A-type and C-type speed reducer replacement gearboxes. The main speed increasing box is designed to have double output ends which respectively correspond to the input ends of the A-type speed reducer and the B-type speed reducer; the middle speed increasing box is connected with the A-type output and the C-type input; the reduction gear box reduces the output rotating speed to the working rotating speed of the load motor. And the positioning unit realizes accurate positioning and fixation of each component through a special bracket and an interchangeable follow fixture. Through the modularized and replaceable transmission chain design and the unified driving and load interface, the functions of rapid remodeling, independent testing or combined testing of A, B and C three-type speed reducers on the same test bench are achieved, the problem that multiple special test benches need to be built for testing of multi-type speed reducers is solved, the test efficiency is remarkably improved, and the test cost is reduced. And the construction and operation cost is reduced.

The invention relates to the technical field of verification equipment, in particular to an electric energy meter on-site verification device, which comprises a load unit comprising a shell; the mounting surface of the shell is provided with a probe unit, and the probe unit comprises a plurality of telescopic probes; a locking buckle and a locking buckle release switch are arranged on each of the two sides of the mounting surface of the shell, and the locking buckle release switches are in driving connection with the locking buckles and are used for driving the locking buckles to be clamped with clamping grooves in the two sides of the to-be-verified electric energy meter; a virtual load module and a real load module are arranged in the shell, the virtual load module and the real load module are respectively connected to one end of the change-over switch, and the other end of the change-over switch is connected with the probe unit; the shell is provided with an output port which is connected with the virtual load module and the real load module, and the technical problems that an existing electric energy meter verification device is single in function and tedious in use are solved.

The invention discloses a method for constructing super-power equipment, and relates to the field of communication. The method comprises the following steps: acquiring power data and state information of a plurality of first load units in a current time period; screening and combining the first load units according to the preset required power and the power data and the state information of the first load units to obtain at least one combination scheme, each combination scheme being composed of at least one second load unit; obtaining multi-dimensional data of each second load unit in each combination scheme; obtaining scores of the second load units based on the multi-dimensional data of the second load units; based on the score of each second load unit and a preset weight corresponding to each second load unit in the combination scheme, determining the priority of each combination scheme, and selecting the combination scheme with the highest priority as a final scheme; and performing connection configuration and power distribution on each second load unit in the final scheme based on the final scheme, and constructing the super-power equipment. According to the invention, the operation stability of the constructed super-power equipment is improved.

The utility model discloses a load test tool and a load test system. The load test tool provided by the utility model comprises an input end, an output end, a power resistance network and a current detection device, the power resistor network is located between the input end and the output end and comprises a first main circuit, the first main circuit comprises a first load unit, and the first load unit comprises a first switch, a first high-power resistor and a second high-power resistor; the first switch is used for switching one of the first high-power resistor and the second high-power resistor to conduct the input end and the output end; and the current detection device is connected in series with the power resistor network and is used for detecting a current value between the input end and the output end. Therefore, only one of the first high-power resistor and the second high-power resistor needs to be switched through the first switch to conduct the input end and the output end, the resistance value of the analog load can be adjusted, the testing efficiency is improved, and meanwhile the current detection device improves the monitoring timeliness and sensitivity of the current value.