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22results about "Machines/dredgers working methods" patented technology
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An abnormal intelligent identification system for a crawler excavator
The application discloses a kind of abnormal intelligent identification system of crawler excavator, it is related to excavator abnormal identification technical field, including following module: multi-source sensing acquisition module, including pressure sensing unit, vibration sensing unit, temperature sensing unit and controller area network signal acquisition unit;Signal synchronization pre-processing module is connected with multi-source sensing acquisition module, for each sensor signal is time synchronization, anti-aliasing filtering and analog-digital conversion;In the scheme, not only will fault diagnosis from traditional single parameter threshold alarm to the qualitative change breakthrough of multi-feature fusion accurate positioning, can distinguish different fault modes of plunger wear, flow distribution plate wear, bearing damage and hydraulic oil intake fault and provide quantitative severity assessment, also by building the diagnosis mode of data-driven and knowledge-driven fusion, both use high-precision sensor to extract state characteristics, also through rule base embedding field experience, make fault identification more accurate and intelligent.
Owner:SHANDONG JINGTUO CONSTR MASCH CO LTD
A full-electric-control positive-flow excavator compound action control method under variable load conditions
This invention relates to the field of hydraulic control technology for construction machinery, and discloses a method for controlling the composite motion of a fully electric positive flow excavator under variable load conditions, comprising the following steps: control initialization, including: setting the displacement ratio a:b between the boom and stick handles; setting the adjustment coefficient; acquiring real-time operating handle signals, setting the initial priority of the stick main valve, starting the control system, and collecting real-time operating parameters; calculating the output flow of the dual pumps based on the handle signals. Q total ; Calculate the flow area of the boom main valve based on real-time operating parameters. A 2 and flow rate of regenerated oil flow rate Q x ;Regenerated oil flow rate based on flow rate Q x Recalculate the desired flow area of the boom main valve. A 2; Based on the desired flow area of the boom main valve A 2. Calculate and output the control current of the boom main valve I ; Control the current of the boom main valve I The output is sent to the stick main valve to dynamically control its opening. Based on the above technical solution, the coordination of the complex actions of the fully electronically controlled positive flow excavator under variable load conditions can be improved, and the control response speed can be increased.
Owner:GUIYANG YONGQING INSTR TECH CO LTD
A multi-track cooperative steering control method and system for a slip-form paver
PendingCN122169541AMachines/dredgers working methodsSteering linkagesSteering angleControl engineering
This invention discloses a multi-track coordinated steering control method and system for slipform pavers, belonging to the field of mechanical control technology. It includes acquiring the boom steering angle, track steering angle, slipform paver steering control information, and vehicle parameters; calculating the slipform paver steering angle based on these parameters; and performing steering operations on the slipform paver using this steering angle. This invention adjusts the boom and track steering via electro-hydraulic means based on the calculated slipform paver steering angle, achieving the steering requirements of the slipform paver in various operating modes, while also offering fast response, high efficiency, and energy savings.
Owner:XCMG CONSTRUCTION MACHINERY CO LTD ROAD MACHINERY BRANCH
A load calculation method for excavators based on digital twinning and Kalman filtering
The application provides a kind of based on digital twin and Kalman filtering's excavator load calculation method, it is related to engineering machinery technical field, the method includes: obtaining the multi-source sensor data of target excavator, the multi-source sensor data includes the drive pressure of each hydraulic cylinder, displacement data and body attitude data;Based on the displacement data, the joint motion state is solved, and the measured joint torque is calculated according to the drive pressure and the current joint configuration;Based on the joint motion state and the preset dynamics parameters, the inertia joint torque of system itself is calculated, and the measured joint torque is subtracted from the inertia joint torque, to obtain the net load torque;A state space model with load mass and lumped disturbance as state vector is constructed, and the net load torque is used as observation variable, recursive optimal estimation is carried out by using Kalman filter, to obtain the target load mass estimation value of the target excavator.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY
An engineered vehicle multi-modal safety monitoring system and method
PendingCN122166122AMachines/dredgers working methodsSignalling/lighting devicesDriver/operatorIn vehicle
This application provides a multimodal safety monitoring system and method for engineering vehicles, belonging to the field of engineering machinery safety monitoring technology. The system includes a multi-source heterogeneous sensing module and an intelligent vehicle-mounted processing terminal. The intelligent vehicle-mounted processing terminal integrates an automotive-grade embedded processor, an in-vehicle touch screen, and an audible and visual alarm. The processor receives and preprocesses sensor data, calculates the dynamic confidence of each sensor in real time, and weights and fuses them to generate environmental obstacle and driver attention information. Simultaneously, it predicts dynamic dangerous movement trajectory sectors based on the vehicle's motion state. The driver's attention is mapped into an attention heatmap, and coupled with the fused obstacle information and dangerous trajectory sectors, a comprehensive risk coefficient for each obstacle is calculated. Visual warnings and audible and visual alarms are output in a graded manner based on the risk coefficient. This invention improves the perception reliability and warning accuracy of engineering vehicles in harsh environments through dynamic confidence weighted fusion and attention-situation coupling risk assessment.
Owner:SHANTUI CONSTR MASCH CO LTD
Work machine, and auxiliary control method, controller, and medium for automatic work thereof
PendingCN122147936AMachines/dredgers working methodsMechanical machines/dredgersControl engineeringMachine
The application discloses a working machine and an auxiliary control method, a controller and a medium for automatic working of the working machine, and comprises the following steps: in the process that the working machine goes back and forth between multiple working positions, real-time acquisition of relative position information between the working machine and a target working position, driving condition parameters of the working machine and load state parameters of a hydraulic system; determination of an arrival time when the working machine reaches the target working position according to the relative position information and the driving condition parameters; determination of an execution time required for a working device to perform a target action according to the load state parameters; determination of a triggering time of the target action according to the arrival time and the execution time; in the case that the current time reaches the triggering time, control of the hydraulic system to drive the working device to perform the target action, so that the time when the target action is performed is matched with the time when the working machine reaches the target working position. The application realizes timing coordination of walking and hydraulic action, improves working efficiency and reduces energy consumption.
Owner:ZOOMLION EARTHMOVING MASCH CO LTD +1
An autonomous unloading method, device and medium for a loader
PendingCN122166563AMachines/dredgers working methodsMechanical machines/dredgersMathematical modelTerminal cost
This invention discloses an autonomous unloading method, device, and medium for a loader, belonging to the field of loader unloading technology. The method includes: determining a feasible solution space for unloading trajectory planning based on the spatial constraints of the unloading target area and the kinematic model of the loader's working device; constructing a stage cost function and a terminal cost function for the unloading process based on a dynamic programming algorithm and the feasible solution space, and determining the globally optimal unloading trajectory; determining a mathematical model of the electro-hydraulic servo system based on the electro-hydraulic drive architecture of the proportional servo valve-controlled hydraulic cylinder of the loader's working device; constructing displacement, velocity, and acceleration tracking errors based on the globally optimal unloading trajectory and hydraulic cylinder extension / retraction data from the state acquisition module, determining a trajectory tracking error model; determining a nonlinear integral sliding surface function based on the trajectory tracking error model; and determining a control instruction set based on the nonlinear integral sliding surface function through equivalent control terms and switching control terms with chatter suppression.
Owner:JILIN UNIVERSITY
Management system of unmanned dump truck and management method of unmanned dump truck
A management system of an unmanned dump truck includes: a path generation unit configured to generate a path indicating a target traveling route of an unmanned dump truck such that the unmanned dump truck enters a discharging point; and an assignment unit configured to assign a second discharging point and a second path to enter the second discharging point to a second unmanned dump truck, based on a first discharging point and a first path to enter the first discharging point assigned to a first unmanned dump truck.
Owner:KOMATSU LTD
Grader differential control method, system, grader, and program product
This invention belongs to the field of general vehicle technology, specifically relating to a differential control method, system, grader, and program product for a grader. The differential control method for this grader includes: entering a pre-lock state after the wheel speed difference ratio is greater than a first preset value and lasts for a preset time; entering a locking state after entering the pre-lock state if the vehicle speed is not greater than a second preset value and the steering angle is not greater than a third preset value; or entering the pre-lock state if the vehicle speed is greater than the second preset value and / or the steering angle is greater than the third preset value, and exiting the pre-lock state; and entering the locking state if the wheel speed difference ratio is less than a fourth preset value and / or the vehicle speed is greater than the second preset value and / or the steering angle is greater than the third preset value, and exiting the locking state. This invention effectively avoids accidental locking under unsuitable conditions such as high speed and large steering angles by triggering the differential speed ratio and duration, combined with multi-parameter collaborative safety verification of vehicle speed and steering angle, thus adapting to locking requirements on complex road surfaces such as mud and loose surfaces.
Owner:XUZHOU XUGONG ROAD CONSTR MACHINERY CO LTD
Electric skid steer loader and control method and apparatus therefor
The application provides an electric skid loader and a control method and device thereof, the electric skid loader comprises traveling motors, the traveling motors comprise left motors and right motors, the control method comprises the following steps: obtaining the state of a traveling handle, wherein the state of the traveling handle comprises up pushing, down pushing, left pushing, right pushing, the opening degree when up pushing or down pushing, the area when left pushing or right pushing; when the state of the traveling handle is up pushing or down pushing, the left motors and the right motors are controlled to rotate in the same direction or in the opposite direction to control the electric skid loader to move forward or backward, and the rotating speed of the left motors and the right motors is determined according to the opening degree when up pushing or down pushing; when the state of the traveling handle is left pushing or right pushing, the left motors and the right motors are controlled to rotate at different rotating speeds to control the electric skid loader to turn left or right, and the turning mode is determined according to the area when left pushing or right pushing.
Owner:LIUGONG CHANGZHOU MACHINERY
Unmanned excavator
PendingCN122147933AMachines/dredgers working methodsMechanical machines/dredgersInteraction interfaceIntegrated software
The application discloses an unmanned excavator, which comprises a vehicle-mounted hardware subsystem, a remote cockpit subsystem and an integrated software subsystem. The vehicle-mounted hardware subsystem is arranged on the body of the unmanned excavator and is used for collecting environment sensing data and body attitude data of a working environment in which the unmanned excavator is located in real time, driving an actuator of the unmanned excavator to complete a working action according to a received control instruction, and the like. The remote cockpit subsystem is used for providing a remote monitoring and instruction input interface, sending a manually controlled instruction inputted from outside to the vehicle-mounted hardware subsystem, receiving and displaying environment and state information returned by the vehicle-mounted hardware subsystem, and the like. The integrated software subsystem is used for processing the environment sensing data and the body attitude data, generating a working control instruction containing a working decision and a motion track, sending the working control instruction to the vehicle-mounted hardware subsystem, providing a man-machine interaction interface, and the like. The integrated software subsystem is configured with three working modes, including a remote control mode, a semi-automatic loading and unloading mode and a full-automatic excavating and loading mode.
Owner:CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
A central rotary variable-diameter annular slotting device and method
PendingCN122236163AMachines/dredgers working methods
This invention discloses a center-rotating variable-diameter annular grooving device and method, including a rotating base, a telescopic adjustment component, a vertical adjustment component, a slag discharge component, and a milling head. The rotating base is fixedly installed on the working ground by ground anchor bolts, and a telescopic adjustment component is rotatably connected to its top. The telescopic adjustment component is used to adjust the radial working radius of the milling head to achieve flexible diameter variation of the annular grooving. A vertical adjustment component is fixedly installed at the end of the telescopic adjustment component, and a milling head is fixedly installed at the bottom of the vertical adjustment component. The vertical adjustment component is used to adjust the vertical working height and grooving depth of the milling head. A slag discharge component is fixedly installed on the side of the vertical adjustment component. The slag discharge component is used to discharge the slag generated by the milling operation in real time to ensure continuous and smooth grooving operation. The rotating base drives the telescopic adjustment component, the vertical adjustment component, and the milling head to perform circumferential rotational motion to complete the continuous milling and forming of the annular grooving.
Owner:CHINA GEZHOUBA GROUP CO LTD
Channel dredging method using grab dredgers
PCT designated stageWO2026118432A1
Owner:CHINA HARBOUR ENGINEERING
Landing leg tube assembly for a work machine
PendingCN122190334AMachines/dredgers working methods
A leg tube assembly for a work machine includes a leg tube adapted to raise or lower a frame of the work machine relative to a ground surface. The leg tube defines an outer surface. The leg tube assembly also includes a locking system associated with the leg tube. The locking system includes at least one protrusion coupled with the outer surface of the leg tube. The locking system also includes a locking element coupled with the frame of the work machine. The locking element is adapted to engage with the at least one protrusion to lock the frame with the leg tube assembly to dispose the frame at a desired height relative to the ground surface.
Owner:CATERPILLAR PAVING PROD INC
Methods, devices, equipment and media for the operation control of engineering equipment
PendingCN122129052AMachines/dredgers working methodsAdaptive controlControl engineeringSelf adaptive
This invention discloses a method, apparatus, device, and medium for controlling the operation of engineering equipment. The method includes: acquiring the road conditions to be traveled by the engineering equipment; determining the target load of the engineering equipment based on the road conditions; collecting the operating conditions of the engineering equipment while it is performing operations based on the target load; and determining the current operating parameters for controlling the engineering equipment based on the matching result of the operating conditions and reference operating conditions. This invention dynamically determines the target load by combining the road conditions to be traveled, making the load configuration more closely match the path characteristics and avoiding efficiency losses caused by overloading or underloading. By introducing historical operating conditions of other engineering equipment as a reference, the current engineering equipment can reuse other efficient operating experiences. Furthermore, by automatically generating suitable current operating parameters through matching the operating conditions with the reference operating conditions, the invention improves the equipment's adaptability to complex operating scenarios and the level of intelligent control.
Owner:GUANGXI LIUGONG METATHINGS TECHNOLOGY CO LTD +1
River channel dredging apparatus and method
PCT designated stageWO2026113989A1Water resource protectionMachines/dredgers working methodsRiver routingRobotic arm
A river channel dredging apparatus and method. The river channel dredging apparatus comprises a travelling mechanism (100), a robotic arm (200) and a dredging mechanism, wherein a base (201) of the robotic arm (200) is rotatably mounted at the top of the travelling mechanism (100), the dredging mechanism is connected to a working end of the robotic arm (200), a collection box (101) is further mounted at the top of the travelling mechanism (100), and a suction pump is provided in the collection box (101). By means of the combined action of a first pushing plate (308) and a second pushing plate (309), the river channel dredging apparatus pushes silt to an opening of a suction pipe (301), thereby expanding the dredging working range and effectively improving the dredging efficiency.
Owner:CHINA HARBOUR ENGINEERING
River dredged sediment instant solidification treatment process
This invention discloses an instant solidification process for river dredging sediment, belonging to the technical field of river environmental management and sediment resource utilization. This process includes four core steps: in-situ closed dredging, onboard instant solidification, closed-loop transportation and backfilling reuse, and ecological restoration. An environmentally friendly dredging vessel with a closed suction pipe is used to perform negative pressure suction of the sediment. On the dredging vessel, a dual-shaft continuous mixing device uniformly mixes fresh sediment with a special environmentally friendly compound solidifying agent. The solidified sediment is then directly and sealed-loop transported to the ecological engineering site for backfilling reuse, ultimately leading to the planting of native vegetation. This invention achieves integrated instant treatment of the entire process from dredging to solidification to reuse, with a 100% sediment reuse rate. The solidified sediment achieves an unconfined compressive strength of over 1.5 MPa after 28 days, and its moisture content is reduced to below 30%. It combines environmental friendliness, economy, and ecological compatibility, completely solving the industry pain points of traditional sediment treatment processes, such as long processing times, high risk of secondary pollution, and low resource utilization rates.
Owner:SHAOGUAN LIYUAN ENG CONSTR CO LTD
Pneumatic tank type telescopic mud inlet pipe layered dredging equipment and method
PendingCN122071877AMachines/dredgers working methodsMechanical machines/dredgersControl systemSludge
The invention discloses a pneumatic tank type telescopic mud inlet pipe layered dredging device and method. The device comprises a pneumatic tank arranged in the longitudinal direction of a ship body, a telescopic mud inlet pipe assembly correspondingly connected with the pneumatic tank, an air control system, a valve set and a drive control unit. The telescopic mud inlet pipe assembly comprises a sleeve type telescopic pipe, a driving mechanism, a guiding anti-twisting structure and an underwater sealing structure, and the mud inlet depth can be automatically adjusted. The pneumatic control system is communicated with the pneumatic tank through a gas pipeline, the valve group is connected in series with the sludge feeding and discharging pipelines and is linked with the pneumatic control system, and the control unit is driven to regulate and control the sludge feeding depth and the switching of sludge suction and discharging working conditions. The device can be aligned with a target mud layer, layered desilting is achieved, mixed layer suction and water pollution are avoided, the sludge resource utilization rate is increased, meanwhile, the running state can be monitored in real time, grounding blockage and mechanism overload are prevented, manual intervention is reduced, and desilting precision and equipment safety are improved.
Owner:NORTHWEST ENGINEERING CORPORATION LIMITED
A backhoe loader work mode control system and method having a reverse maneuvering function
PendingCN122215423AMachines/dredgers working methods
The application discloses a kind of excavator working mode control system and method with reverse steering function, including control unit, man-machine interface, working mode selection switch, control handle back button, seat position interval detection device, hydraulic pilot valve group and working device electric proportional valve group;Control unit is configured as: the gear signal of working mode selection switch, the position signal of seat position interval detection device and the trigger signal of control handle back button are collected, the logic linkage judgment based on multiple signals, output control instruction to hydraulic pilot valve group and working device electric proportional valve group, realize the switching of excavator working mode and working device action control, simultaneously drive man-machine interface output corresponding working mode state prompt.The application is used for whole vehicle working mode control and switching, improve product safety, use convenience, improve the intelligentization and modularization degree of control system, realize the control and safety protection of loading and excavating working device.
Owner:XCMG CONSTRUCTION MACHINERY CO LTD SCIENCE & TECHNOLOGY BRANCH