10results about How to "Smooth shock" patented technology

The invention belongs to the technical field of drilling cast-in-place pile slurry viscosity testing, and discloses a slurry viscosity measuring unit which comprises a slurry containing cylinder, a viscosity sampling cylinder, a slurry floating plate, a collecting assembly and a timer, and the slurry containing cylinder is provided with a containing inner cavity; the viscosity sampling barrel is provided with a sampling inner cavity with an open upper part, the sampling inner cavity is communicated with the accommodating inner cavity through a mud passing channel, and the mud passing channel is provided with a first opening and a second opening; the collecting assembly is movably arranged in the sampling inner cavity along with the mud floating plate and comprises a first liquid level sensor and a second liquid level sensor, the first liquid level sensor is arranged in the containing inner cavity and has the same gravitational potential as the first opening, and the second liquid level sensor is arranged at the top of the sampling inner cavity and has the same gravitational potential as the second opening; and the timer is triggered by a pressure signal of the first liquid level sensor to start timing and is triggered by a pressure signal of the second liquid level sensor to end timing. The invention further discloses a mud viscosity measuring device and a mud viscosity measuring method based on the measuring unit.

The present application discloses a hydraulic vibration system, which belongs to the field of hydraulic vibration technology. The system includes an oil supply module, a power module, a hydraulic module, an execution module and a control module, wherein the control module is electrically connected to the oil supply module, the power module, the hydraulic module and the execution module respectively; the oil supply module is connected to the power module, and the oil supply module is used to supply oil to the power module; the power module is connected to the hydraulic module, and the power module and the hydraulic module jointly control the vibration amplitude of the execution module; the hydraulic module is connected to the execution module, and the hydraulic module is integrated with a switch valve group, an electro-hydraulic reversing valve, a relief valve and a diverter and collector valve; the vibration frequency and period of the execution module can be adjusted by opening and closing the switch valve group. The main purpose of the present application is to provide a vibration amplitude, a vibration frequency and a vibration period that meet the processing requirements when processing pipeline workpieces or similar products.

The utility model relates to the technical field of engineering, in particular to a rail transportation system based on a steep mountain. The rail transportation system based on the steep mountain comprises traction equipment, rail equipment and transportation equipment. The transportation equipment comprises a vehicle body, a matching wheel assembly and two connecting wheel assemblies. A connecting elastic piece is arranged between the connecting wheel assembly and the vehicle body and provides elastic force enabling the connecting wheel assembly to move in the direction away from the vehicle body. A matching elastic piece is arranged between the matching wheel assembly and the vehicle body and provides elastic force enabling the matching wheel assembly to move in the direction close to the vehicle body. Therefore, materials can be stably transported.

The embodiment of the invention provides an after-cooling separation device of a carbon dioxide compressor, and relates to the technical field of gas cooling separation equipment. The after-cooling separation device of the carbon dioxide compressor comprises a gas separation mechanism, a cooling mechanism and a gas batching and dredging mechanism, the cooling mechanism is located in the middle of the upper end of the gas separation mechanism, the gas batching and dredging mechanism is located in the gas separation mechanism, and the gas batching and dredging mechanism is located at the lower end of the cooling mechanism. The ventilation positions of different heights of the separation frame can be opened in batches, and the other two ventilation positions can be automatically closed when one ventilation position is opened, so that gas can enter the separation frame in a layered and step-by-step manner, the gas can more stably impact the purification arc plate, the gas is more fully contacted with the purification arc plate, and the chance of water condensation is greatly increased; the separation efficiency is improved, and the moisture in the gas is more effectively removed.

This invention discloses a method for estimating the state of charge (SOC) against fluctuating current. It acquires the real-time current and terminal voltage of the power battery to estimate the basic SOC. Based on a dual hysteresis threshold, the sample time proportion of the real-time current sequence within the target time window, and a transient pulse filtering mechanism, it accurately identifies the actual switch between steady-state and dynamic operating conditions. Responding to the operating condition switch, a dynamic weight fusion strategy is adopted within a preset transition period to acquire in parallel the proportional-integral-derivative (PID) control algorithm correction amount with the terminal voltage residual as input, and the state observation filtering algorithm correction amount with the basic SOC as the state variable. The weights of the two correction amounts are linearly and smoothly varied over time and then weighted and fused to calculate the final target SOC to manage the charging and discharging process of the power battery. This invention effectively filters out transient current interference, eliminates the step jump in estimated values ​​caused by hard switching of the underlying algorithm, and balances the steady-state accuracy of the estimation with high dynamic tracking response.

The utility model relates to single out pole viscous damper field, concretely relates to a gasbag energy storage type single out pole viscous damper, including damper cylinder body, the main part for bearing single out pole viscous damping assembly, single out piston rod, set up in the inside of damper cylinder body, for bearing impact complete damping buffer, and single out piston rod's rear end fixed mounting has energy storage gasbag, the inside of damper cylinder body is provided with telescopic buffer spring. The utility model is provided with energy storage gasbag, telescopic buffer spring, gasbag inner support, inner partition, air pressure sensor, drive control module and inlet and outlet pipe, when using the gasbag energy storage type single out pole viscous damper, the air pressure sensor inside energy storage gasbag can real -time monitoring the internal air pressure of energy storage gasbag, and through wire connection, the air pressure data transmission drive control module, like this can be in time through the inlet and outlet pipe and the air inlet of air supplement when the internal air pressure of energy storage gasbag is insufficient and carries out air supplement.

The invention discloses a buffer connecting device and a vehicle, and belongs to the technical field of vehicles. According to the buffer connecting device and the vehicle, the connecting faces of the flexible sleeve, the rigid sleeve and the steering gear shell are all the conical faces, and after the lining is installed in the installation hole, the locking piece provides pre-tightening force so that the flexible sleeve can be tightly attached to the inner conical face of the installation hole; the flexible sleeve can provide buffering damping force in two directions in the axial direction and the radial direction of the mounting hole, it is guaranteed that the flexible sleeve is evenly stressed in the axial direction and the radial direction of the mounting hole at the same time and evenly provides counter force, then it is guaranteed that the steering gear shell is more stable and free of abnormal vibration or deformation when impacted by a vehicle body, the steering gear is protected, and the service life of the steering gear is prolonged. The noise generation suppression capability is high, the NVH problem is avoided, and noise generation and transmission are effectively avoided; meanwhile, the damping mechanism can provide damping in different directions after being subjected to the pre-tightening force of the locking piece, the damping force of the flexible sleeve can be adjusted through the damping mechanism, and the buffering effect of the flexible sleeve is further improved.

This application relates to the field of motor control and electrical technology, and in particular to an intelligent control method and system for a high-speed brushless motor for vacuum cleaners. The method is applied to a high-speed brushless motor system, which includes a processor and a frequency-selective damping ring fitted onto the motor stator core. The inner wall or end face of the frequency-selective damping ring has multiple radial slots arranged at preset intervals. The method is executed by the processor and includes: acquiring a torque trend term characterizing the change trend of the motor load torque and an angular acceleration term characterizing the change trend of the motor rotor kinetic energy; calculating a real-time phase offset based on the torque trend term and the angular acceleration term; identifying the degree to which the real-time phase offset deviates from a preset dynamic threshold to determine whether the motor has entered a surge bud state; and outputting an overmodulation control signal when a surge bud state is detected to drive the motor stator windings to generate an excitation current containing high-frequency harmonic cluster components.

The utility model relates to the technical field of electromechanical pipeline installation, and discloses an electromechanical comprehensive pipeline installation structure which comprises a connecting column, the two ends of the connecting column are both fixedly connected with auxiliary mechanisms, and the surfaces of the two auxiliary mechanisms are both fixedly connected with two sets of gaskets. According to the electromechanical integrated pipeline mounting structure, through the arrangement of the cushioning mechanism, the connecting rod and the fixing assembly, when an electromechanical integrated pipeline is mounted, a device is firstly fixed to a wall, bolts in the supporting legs are all fixed to the wall, the supporting legs are tightly attached to the wall to stably fix the device to the wall, and when the device is impacted by the external environment, the device is fixed to the wall through the connecting rod and the fixing assembly; and the damping hydraulic rod and the spring are compressed to buffer the impact caused by the external environment. Through the arrangement of the device, the electromechanical integrated pipeline can be stably fixed to the wall body, meanwhile, the influence of external impact on the pipeline and equipment can be reduced, the damage risk of the pipeline and the equipment is reduced, and the service life of the pipeline and the equipment is prolonged.

The invention provides a punch forming device for a front wheel cover connecting beam, and belongs to the technical field of punching devices. Comprising a machine body, a cam box is installed on one side of the machine body, a double-hand operation table is installed at the front end of the machine body, a machining table is installed on the inner wall of the machine body, a control center is installed on one side of the machine body, and a positioning model base is arranged on the inner wall of the machining table. Through the arrangement of the positioning pushing assembly and the oil injection recovery assembly, the device is buffered firstly, direct punching on a plate is avoided, cracks, scratches and sinking of the plate caused by strong impact are also avoided, the stability of the plate in the impact process is guaranteed through supporting of a bent part, deformation and flash are prevented, and the production efficiency is improved. And lubricating oil is sprayed to the positioning model base, so that the plate is easier to slide and position in the punching process, the punching precision and stability are improved, the lubricating oil is collected and reused, the consumption of the lubricating oil can be reduced, and the production cost is reduced.