151results about How to "Avoid unbalanced load" patented technology

The invention discloses a main shaft axial dynamic stiffness test device. A center height adjusting screw is arranged on a box body. A butterfly-shaped spring is arranged in the box body. The butterfly-shaped spring is connected with a force sensor. The force sensor is connected with a guide element of a force loading module. The guide element is connected with a feed screw. A displacement measurement module is arranged on a main shaft. A center height adjusting knob is adjusted. Through a connecting guide rod, the main shaft and test equipment are connected. After the displacement measurement module is arranged and adjusted, the displacement measurement module and a force measurement module access a computer, and test software is turned on. The main shaft is rotated, and the force loading module is started. The force loading module axially applies a corresponding pull pressure load on the main shaft. The test software synchronously acquires and records the applied pull pressure load and the corresponding axial displacement offset. After a procedure carries out data processing, a main shaft dynamic stiffness test result is output.

A lift/rotation bench for forging steel ingots is provided, which belongs to the field of forging tools. The steel ingot-turning device in the prior art has the disadvantages such as offset load of the hoist cylinder during the placement of steel ingots and single V-shaped structure of the steel ingot supporter. In the invention, a reticulated V-shaped steel ingot supporter is connected with a frame of the lift/rotation bench and also supported against the top end surface of a thrust bearing; the thrust bearing is connected with a bearing block; the bearing block is connected with a spherical joint through a clamping block; the spherical joint is connected with a hoist cylinder; a rotary guide bracket is fixed thereon with a guide key; the guide key is in socket joint with a guide groove on the lift/rotation bench; the rotary guide bracket is fixed to the outer ring of a turntable bearing; the external teeth of the turntable bearing are engaged with a pinion gear; the pinion gear is driven by a variable motor, a supporter is fixed to the inner ring of the turntable bearing and positioned above a spring; and the supporter is arranged on a pedestal. The bench overcomes the problem of offset load of the hoist cylinder, avoids the failure of the oil cylinder, improves the work efficiency, and widens the range of forging specifications of steel ingots.

The invention relates to a bulk material unmanned loading control method, system and device based on a multi-line laser radar. The method comprises the steps: collecting three-dimensional point clouddata of a carriage through the multi-line laser radar; recognizing the size of the carriage, a real-time movement position of the carriage and a real-time movement speed; dynamically adjusting a loading process; and achieving unmanned automatic loading control. Different control parameters can be adopted for loading according to different carriage types, a technical bottleneck of loading intelligence is broken through, loading cost is reduced, and loading efficiency is improved. Problems that in the prior art, due to a fact that a manual loading mode is adopted, labor cost is increased, loading quality stability cannot be effectively guaranteed, conditions such as reciprocating loading or loading unbalance loading and the like often occur, and the loading efficiency is not high are solved.

The invention relates to a scale calibrating device and a scale calibrating method for a hopper scale with hopper or hopper bin horizontal detection. The device mainly comprises a jack, a portal frame, a magnetic level instrument, a magnetic level instrument connection hose, a pressure applying platform, a standard weighing sensor and a weighing display instrument, wherein the lower end of the central position of a horizontal transverse beam of the portal frame is provided with the jack; the jack is vertically arranged on the upper surface of the standard weighing sensor for scale calibrating; the pressure applying platform is arranged below the standard weighing sensor for scale calibrating; and the magnetic level instrument mainly comprises a magnetic base and a plastic pipe with graduations. The jack is used for converting a standard weight needed by electronic scale calibration into mechanical force instead of a weight, the magnitude of applied force is controllable, and the loading is at a uniform speed and is reliable; the magnitude of the applied force is accurately displayed through the standard weighing sensor and the weighing display instrument, so that the accurate metering of mechanical force is realized; and the scale calibrating device has a simple structure and a low price, is suitable for narrow fields, can be used repeatedly, is flexible and convenient for applying, and is convenient to install and use on site.

The invention discloses a dynamic torque detection system, comprising a bench and a torque sensor; an electrical-pneumatic torque wrench is fixedly mounted on the bench; one end of the torque sensor is connected with an output shaft of the electrical-pneumatic torque wrench; the other end of the torque sensor is connected with a sleeve through a coupling; the sleeve is rotationally fixed on the bench and is connected with a torque brake device that may provide continuous braking for torque. By providing the torque brake device that may provide continuous braking for torque to detect a torque peak, measurement precision is improved; the torque brake device is arranged as a bolt, continuous braking is achieved by tightening the bolt; compared with simulated bolts, the dynamic torque detection system as a calibrator allows an actually used bolt to be sued in the detection process, and the actual condition can be simulated to maximum extent.

The application discloses a message transmission method and a message transmission device, relating to the technical field of communications and capable of solving the problem of unbalanced load between equipment serving UE. The method provided by the application comprises: the session management function equipment receives a deletion indication from the first equipment and the indication information of the group to which the first equipment belongs, and deletes the second interface information in the UE session context according to the deletion indication in the case that the session management function equipment receives the first interface release message from the first equipment; then, when a downlink message needs to be sent, the session management function equipment sends the downlink message to the second equipment, wherein the second equipment is determined according to the indication information of the group for serving the UE. This application is applicable to the process ofmessage transmission.

The invention discloses a testing mechanism for concrete creep under the corrosion and load coupling action. The testing mechanism comprises a stress steel plate and a pressure sensor, wherein the stress steel plate is installed on the upper portion of a testing sample. The testing mechanism is characterized in that the testing sample is installed in the center of an open container containing a corrosion solution; a conductive metal net is arranged in the corrosion solution, a steel bar in the testing sample is connected with the positive electrode of a constant-voltage direct-current power source, the conductive metal net is connected with the negative electrode of the constant-voltage direct-current power source, and an electrochemical corrosion circuit is formed by the corrosion solution, the constant-voltage direct-current power source, the conductive metal net and the testing sample; a dial indicator is installed on the testing sample. The creep testing method of the testing mechanism comprises the first step of manufacturing of the testing sample, the second step of installation, the third step of loading and the like. The creep characteristics of concrete under the corrosion and load coupling action are taken into consideration and better conform to the environment state of practical engineering structures, tests have higher engineering value, and significant engineering application value and wide market application prospects are achieved.

The invention discloses a ball screw pair-driven clamping mechanism. The ball screw pair-driven clamping mechanism comprises four pull rods, a tail plate, two toggle mechanisms, a movable mould plate, a head plate, a synchronous pulley, a screw bearing base, a ball screw, a ball nut and a thrust block, wherein the four pull rods fix the distance between the head plate and the tail plate and are used for guiding movement of the movable mould plate. The ball screw pair-driven clamping mechanism is driven by a servo motor; and through a toothed synchronous belt and a ball screw pair, rotation of the motor is converted into back-and-front movement of the thrust block to drive a toggle link mechanism so as to open and close the movable mould plate.

The invention discloses a digital video recorder with a multiprocessor cluster and a realization method of the digital video recorder. Data communication and exchange are carried out among multiple CPUs via a PCIE interface switch chip; each CPU is connected with the PCIE interface switch chip and a route or gateway function device to obtain a multimedia data code stream according to the network bandwidth and the IPC access way distributed by the route or gateway function device and process the multimedia data code stream, and processing of the multimedia data code stream includes at least one selected from decoding, storing, sending, display and output, replay, preview and intelligent analysis; and the route or gateway function device is connected with the multiple CPUs to distribute the network bandwidth and the IPC access way for the CPUs. According to the technical scheme provided by the invention, the CPUs are prevented from load imbalance and resource waste, the power consumption is reduced, the cost is reduced, and the using performance of products is improved.

The invention discloses a vehicle-mounted weighing system of a freight train as well as a weighing method. The weighing system comprises a weighing sensor, a connecting cable and a vehicle-mounted intelligent terminal, wherein the vehicle-mounted intelligent terminal consists of an ARM embedded controller unit, a power supply unit, a positioning unit, a wireless data transmission unit, a digital I/O interface unit, a weighing signal amplifying and conditioning circuit, an analog-digital conversion circuit and a data storage unit. A bogie strain-based indirect type weighing method is adopted bycombining the own structure of a rail wagon. For the safe working characteristic of railway freight, the weight of the wagon is monitored in real time in the loading, transportation and unloading processes of the freight train, and whole-course dynamic weighing of the whole wagon and the whole route is realized. The vehicle-mounted weighing system has remote monitoring and failure diagnosis functions, is high in measuring result precision and stability, has the characteristics of reliable performance, low cost of monitoring equipment and low requirements on mounting and use conditions, and iseasy to popularize and use.

A weight set for an electronic balance has at least two different weights (15, 25, 26, 27, 28, 29) and a weight-receiving device (19) with receiving positions for each of the weights (15, 25, 26, 27, 28, 29). The weight set (2) has one lifter unit (17) per weight for the vertical movement of each individual weight (15, 25, 26, 27, 28, 29). The lifter units, which are equipped with a weight-seating device and reach through the weight-receiving device (19), are identical and are arranged parallel to each other in the weight set (2).

The application discloses a traction contact system applied to a locomotive load; the locomotive load at least comprises a frequency converter and a traction motor; the traction contact system comprises a first receiving end convertor station and a first sending end convertor station, wherein the first receiving end convertor station is connected with a power system, rectifies a three-phase alternating current output by the power system to obtain a direct current and outputs the direct current; and the first sending end convertor station receives the direct current output by the first receiving end convertor station, inverts the direct current to obtain a single-phase alternating current, conveys the single-phase alternating current to a frequency changer, triggers the frequency changer to rectify and invert the single-phase alternating current to generate the three-phase alternating current, and sends the three-phase alternating current to the traction motor. According to the traction contact system disclosed by the embodiment of the invention, the three-phase power load of the power system for providing the three-phase alternating current can be balanced and stabilized, thereby avoiding the shortage of unbalanced load of the power system, reducing the loss of electric energy and improving the utilization rate of the electric energy.

The invention relates to a train loading station real-time unbalance loading prevention system and method. The system comprises a plurality of position sensors and centroid sensors distributed on or around loading stations of a loading station, each position sensor is connected with a carriage position calculating device, each centroid sensor is connected with a carriage centroid calculating device, the carriage position calculating device and the carriage centroid calculating device are connected with a gate chute controller, and the gate chute controller is connected with a carriage type identifier, a carriage information storage, an unloading chute and an unloading gate. According to the train loading station real-time unbalance loading prevention system and method, the dense sensors are arranged on a track passing through the loading station, the weight and the position of loaded carriages in the loading process are detected in real time, the centroid of goods entering the carriages is calculated in real time, the loading state of a balanced vehicle is compared according to the centroid, so that the balance of the current loading is estimated, the loading amount is adjusted inreal time according to the long-term condition, and the effect of automatically balancing and preventing unbalance loading is achieved.

When asking for joining a multicast group, user sends report message in Internet group management protocol (IGMP) of the multicast group to access equipment; based on value of actual load of each available up going port, and load value setup in advance, the access equipment determines a up going port going to transfer multicast data of the multicast group; and through the determined up going port, the received report message in IGMP is sent to multicast route; after multicast route receiving the report message in IGMP from the access equipment, multicast route sends the multicast data of the multicast group through the determined up going port in the access equipment to the access equipment; then, the access equipment sends the multicast data to the user. The invention avoids unbalanced load of multicast service carried by up going port in access equipment so as to raise transmission efficiency.

An object of the present invention is to achieve improvements in the rotational accuracy of the input shaft and the durability of the bearings, and suppression of rotational noise, by improving the support structure of the input shaft of the speed reduction unit. Provided is a drive device for an electric vehicle, including: an electric motor; a speed reduction unit including an input shaft driven by output of the electric motor; and a hub unit rotationally driven by an output member of the speed reduction unit, wherein the input shaft of the speed reduction unit is supported by bearings provided at two locations in an axial direction, the drive device for an electric vehicle being configured such that the bearings at the two locations are attached together to the output member.

The invention relates to a propelling trolley, which comprises a trolley base, a plurality of connection bracket bodies, a hydraulic control system, adjusting brackets, an oil cylinder A, a transverse shifting device, a slope adjusting device and a longitudinal shifting device, wherein the connection bracket bodies and the hydraulic control system are arranged above the trolley base, the adjusting brackets are arranged on the connection bracket bodies in an up-to-down sliding manner, the oil cylinder A is vertically arranged on the trolley base, the transverse shifting device can enable the trolley base to transversally shift relative to bracket beams, the slope adjusting device is arranged on the adjusting brackets, the longitudinal shifting device is arranged on the trolley base, and can enable a main beam to longitudinally shift, and the oil cylinder A is connected with the hydraulic control system. According to the invention, under the action of the transverse shifting device and the longitudinal shifting device, the propelling trolley can drive the main beam to transversally or longitudinally shift, and the oil cylinder A can push upwards the adjusting brackets to lift the main bream; as the slope adjusting device is arranged on the adjusting brackets, the slope adjusting device can enable the slope of the front and the back of the propelling trolley to be constant, further, the condition that a bracket bearing system of a movable formwork bridge fabrication machine has unbalance loading can be avoided, and in the longitudinal traveling process, the disadvantageous hyperstatic working condition can be avoided.

Based on current load parameter of home proxy in same link, the method adjusts priority of home proxy dynamically in mobile communication network. Based on adjustment of priority, sequence of home proxy in list of home proxy is changed so as to influence on mobile node to select home proxy. Thus, each home proxy bears a balanced share in load can be realized. The invention effectively prevents issue of unbalanced loads among home proxies from occurring caused by too many mobile nodes to select same home proxy. The invention adjusts loads on each home proxy without need of network manager to carry out fussy operation of configuration and maintenance.

The invention relates to a turntable. The center of a rotary table of the turntable is provided with a through hole as a seat hole, a base is connected to the rotary table through a main shaft and a bearing set that are arranged in the seat hole, the main shaft is assembled in the central hole of the base, and the base at the outer side of the main shaft is arranged with a secondary plane thrust bearing; in the end surfaces of both ends of the rotary table, the end surface of one end is a working plane, and the end surface of the other end is supported by the secondary plane thrust bearing; afirst cylindrical step is also provided between the end surfaces of both ends of the rotary table, a main support body is arranged around the secondary plane thrust bearing on the base, a main plane thrust bearing is assembled between the main support body and the first cylindrical step, and three or more speed reduction slots are symmetrically arranged in the center on the big end ring surface ofthe first cylindrical step. A dual-rotary support system of the turntable is strong in loading capability, simple in structure, easy to manufacture and process, transport and install, and is specifically suitable for application under large-diameter fully loaded transportation condition.

Disclosed is a one-dimensional heavy load sensor which is high in accuracy, high in rigidity, large in load and low in cost. The concrete filled steel tube structure is adopted as a bearing body, the outer portion of the concrete filled steel tube structure is of a cylindrical structure, two sets of resistance strain sheets are arranged in the bearing body, the first set comprises four resistance strain sheets vertically and evenly distributed on the contact surface of concrete and the steel tube, the other set comprises one resistance strain sheet which is arranged in the center of the concrete filled steel tube, the two ends of the resistance strain sheets are connected with wires, and the wires on the resistance strain sheets are connected to external equipment through through holes in the wall and the bottom end of the sensor. The concrete filled steel tube is adopted as the bearing body, the load bearing capacity is largely increased, and the size of the bearing body can be largely reduced. The sensor is provided with the two sets of resistance strain sheets which are five in number, so that the sensitivity and accuracy of the sensor are improved. The pressure heavy load sensor of the concrete filled steel tube has the advantages of being simple in structure, convenient to machine, reliable in performance, good in load bearing capacity, high in measurement accuracy, small in size, high in rigidity, stable in performance and the like.

The invention discloses a feed depth adjustment mechanism of a bending machine and the bending machine. The feed depth adjustment mechanism of the bending machine comprises a rotary cover, a stop block, a screw, an adjustment nut and a driving assembly. The rotary cover is provided with a sealed end and an open end. The stop block is fixed to a machine frame of the bending machine. One end of the screw is inserted into the rotary cover, and the other end of the screw extends out of the rotary cover through the opening end of the rotary cover. The screw penetrates through the stop block to be connected with a sliding block of the bending machine. The adjustment nut is mounted in the rotary cover and connected with the screw in a threaded mode. The rotary cover can drive the adjustment nut to rotate around the screw and enables the adjustment nut to move up and down along the screw. The driving assembly is connected with the sealed end of the rotary cover. A limiting convex part is arranged at the end, close to the stop block, of the adjustment nut. A limiting groove matched with the limiting convex part in size is formed in the end, close to the adjustment nut, of the stop block. Compared with the prior art, by adoption of the feed depth adjustment mechanism, unbalance loading between the adjustment nut and the stop block can be avoided, and the situation that the service life of the screw is affected due to the fact that non-axial force is borne by the screw is avoided.

The invention discloses a hydraulic turning overhauling device and method for a large vertical axial-flow pump unit. The device comprises a gear disk, two hydraulic motors and a detecting instrument;the gear disk is mounted on a thrust bearing through bolts; a motor spindle penetrates through the center of the gear disk; lifting rings are arranged on the upper surface of the gear disk; the two hydraulic motors are arranged symmetrically with the motor spindle used as the center; the two hydraulic motors work synchronously; the hydraulic motors are mounted on a motor casing through adjustablesupporting seats; the adjustable supporting seats are used for adjusting the horizontal positions, the vertical positions and the inclination angles of the hydraulic motors; pinions driven by the hydraulic motors are in meshing connection with the gear disk; and the detecting instrument is used for detecting the motor spindle or a pump shaft. The power is sufficient, the stress balance of the geardisk can be guaranteed, the horizontal positions, the vertical positions and the inclination angles of the hydraulic motors are adjusted through the adjustable supporting seats, the meshing precisionof the pinions and the gear disk is guaranteed, and safe and stable operation of a water pump is guaranteed.