8results about How to "High loading accuracy" patented technology

The present application belongs to the technical field of flexible body aircraft, and particularly relates to a large-aspect-ratio heavy-load lightweight wing bending and torsional stiffness measuring platform. The measuring platform comprises a variable-roots wing clamping table, a telescopic heavy-load support frame, a lifting heavy-load beam, a pre-tightening force regulator, an integrated infusion loading device, a data monitoring terminal and a displacement meter. The lifting heavy-load beam is located directly above the variable-roots wing clamping table and spans the two heavy-load telescopic vertical beams of the telescopic heavy-load support frame. The pre-tightening force regulator is connected to the lifting heavy-load beam and the heavy-load flexible lightweight wing test piece through a pull rope at both ends. The data monitoring terminal is used to monitor and record the displacement and tension data of different measuring points of the lightweight wing test piece. The integrated infusion loading device can accurately control the different loads at different positions of the lightweight wing test piece, and realize the equivalent fine loading of the aerodynamic distributed load of different regions of the heavy-load flexible lightweight wing test piece under different working conditions, thereby greatly improving the loading accuracy.

The application relates to the technical field of excitation test equipment, and discloses a high-precision omnibearing adjustable vibration isolation exciter device.The device comprises a base, air energy vibration isolation dampers, a vertical telescopic rod, an electric push rod, a sliding rail, a rotary adjusting mechanism, a workbench suitable for mounting various excitors, and double safety casters.The base is provided with the casters, the casters are integrated with mechanical floor locking pins and electromagnetic chocks, and quick fixing is realized.The electric push rod is used for large-stroke lifting and millimeter-level fine adjustment.The sliding rail is matched with a worm and gear assembly of the rotary adjusting mechanism to realize two-dimensional fine adjustment.The vibration isolation assembly is composed of four air energy vibration isolation dampers, and ground interference is effectively reduced.A force sensor is arranged on a sliding seat of the rotary adjusting mechanism, and combined with a closed-loop control system, real-time monitoring and automatic correction of a loading force are realized.The application can meet the requirements of large-stroke movement, two-dimensional fine adjustment and high-precision loading, and has the advantages of high stability, good vibration isolation effect and high safety.

The utility model relates to the technical field of force measuring platforms, in particular to six-dimensional force measuring platform calibration equipment, which comprises a frame, a normal loading frame, a lateral loading frame and a force measuring platform clamp, and is characterized in that the normal loading frame is positioned at the upper part of the six-dimensional force measuring platform calibration equipment and is used for realizing calibration of normal force; the lateral loading frame is located on the left side of the six-dimensional force measuring platform calibration device and used for achieving calibration of lateral force, the force measuring platform is fixedly clamped on the force measuring platform clamp, and the top of the force measuring platform is fixedly connected with the normal loading frame through the normal loading clamp. According to the six-dimensional force measuring platform calibration equipment, the influence of the friction force of the pulleys on the loading precision is reduced. The normal loading frame can realize calibration of normal force, and the two lateral loading frames are respectively used for horizontal X-direction and Y-direction force transmission and are matched with a plurality of standard sensors to carry out loading at different positions, so that the actual stress condition can be more accurately simulated, the calibration precision of six-dimensional force is effectively improved, and the requirements of various industries on high-precision measurement can be met.

The invention discloses a dynamic sealing and axial force self-balancing device and method for hydrogen environment mechanical property detection, and belongs to the technical field of material testing. The device comprises a mechanical loading mechanism, a reaction kettle, an atmosphere supply and control system and an integrated cooling and force balancing unit, the core of the unit is a cooling gas cabin arranged around a loading pull rod and a cooling pressurization system for providing pressure-adjustable cooling gas. When cooling gas flows through the cooling gas cabin, two functions are executed at the same time: one function is that a loading pull rod and a dynamic sealing area are cooled through convective heat exchange; secondly, reverse thrust is generated on the pull rod through gas pressure so as to dynamically balance axial force generated by high-pressure gas in the reaction kettle; the device is further provided with a temperature closed-loop control module, and cooling parameters are adjusted in real time according to temperature feedback of a dynamic sealing area. According to the invention, the coupling problem of dynamic seal cooling and axial force balance in an extreme hydrogen environment is solved, and the test safety, stability and measurement precision are significantly improved.

This invention relates to a collaborative control method, apparatus, and equipment for a dual-track loading and feeding system, belonging to the field of railway loading technology. In this method, apparatus, and equipment, when the target car reaches a switching threshold during loading, it switches to the replenishment stage. By setting replenishment priority determination rules, the replenishment sequence of the two tracks is clearly defined, avoiding the problem of insufficient or accumulated material in the buffer bin caused by simultaneous replenishment, resolving the conflict problem of dual-track operations, and improving loading efficiency and accuracy. Furthermore, during the replenishment stage, a fuzzy PID fusion collaborative adjustment algorithm is used to adjust the parameters of multiple devices in a coordinated manner, stabilizing the material level in the buffer bin within the ideal range of 30%-50%. This ensures that coal flows directly into the chute with stable flow fluctuations, eliminating the need for secondary leveling, stabilizing the replenishment conditions, and significantly improving loading accuracy. Simultaneously, it avoids equipment overload caused by material accumulation and blockage, reduces the frequency of air cannon activation, and lowers equipment wear and energy consumption.

This invention belongs to the field of flexible body aircraft technology, specifically disclosing a method for measuring the stiffness of a flexible wing. This method is based on a static strength and stiffness measurement platform for flexible wings, which includes a test bench support frame, a specimen fixing platform, support rods, tension ropes, a rangefinder, and a counterweight loading component. The stiffness measurement method includes: calculating the test load; installing the flexible wing test specimen; marking the flexible wing test specimen; designing and preparing the counterweight loading component; applying equivalent loading under the test condition; measuring the bending and torsional stiffness boundaries; and post-processing the measurement results. This measurement method significantly improves loading accuracy and can simulate loads under bending, torsion, or combined bending and torsion conditions of flexible wings to obtain stiffness and instability boundaries. It overcomes the shortcomings of traditional flexible wing structural stiffness measurement methods, which can only perform rough loading and cannot handle heavy loads, and can measure the load-bearing capacity and stiffness of high aspect ratio, high load-bearing special-purpose flexible wings.

This invention belongs to the field of continuous beam construction technology and solves the problems of large amount of high-altitude work, high safety risks, and low load accuracy in the existing hanging basket preloading test and ground tensioning preloading method. This invention provides a hanging basket for continuous beam construction, characterized by including a hanging basket, on which a template is installed, and a bottom basket is connected to the bottom of the template. The bottom basket is used to place counterweights. The bottom of the template is provided with a connector, and the top of the bottom basket is connected to a preloading box by steel strands. The top of the preloading box is provided with a hook, and a pair of lifting lugs are provided on both sides of the preloading box. The preloading box can be suspended by the hooks at the bottom of the connector by hoisting. This invention has the advantages of eliminating the need for high-altitude work during preloading, high safety, high construction efficiency, and high load accuracy.

The application discloses a filling metering device, which comprises a discharging mechanism, a metering assembly, a blanking channel and a discharging channel. The metering assembly is arranged in the discharging mechanism, the discharging mechanism can be lifted along the metering assembly, so that the material in the discharging mechanism enters the metering channel of the metering assembly, the blanking channel is located between the metering channel and the discharging channel, and the blanking channel can be horizontally moved to be connected with or disconnected from the metering channel and the discharging channel. The application further discloses a filling metering method, which comprises the following steps: S1, the discharging mechanism is lifted, so that the material in the discharging mechanism enters the metering channel of the metering assembly; S2, the discharging mechanism is lowered, and the blanking channel is horizontally moved to be connected with the metering channel and the discharging channel; and S3, the material is discharged and filled from the metering channel in sequence through the blanking channel and the discharging channel. The application has the advantages of simple structure, reduced material crushing and small occupied stroke space.