1764 results about "Engineering machiner" patented technology

A data recording unit 60 for managing operating situations of a hydraulic excavator 1 comprises a RAM 67 for taking in and storing plural kinds of operational information regarding the hydraulic excavator 1 as operational data, and a CPU 65 for extracting top priority operational data from among the plural kinds of operational data stored in the RAM 67, and transmitting the extracted data to the supervising side via satellite communication. Top priority data among the plural kinds of operational data of the hydraulic excavator, which may bring the hydraulic excavator into rest, can be presented to a supervisor of the hydraulic excavator, etc.

The invention provides a hydraulic chassis engineering machine step control method, which includes testing the current load state of the engineering machine, the opening degree of the throttle, and the actual run speed. The invention judges the current load state, when the load state is intermediate low, and the difference of the actual speed and the goal rotate speed exceeds the preset range, then corresponding current can be provided for the hydraulic motor for regulating the displacement; namely when the actual rotate speed is lower than the goal rotate speed, current for lowering the displacement can be provided to the hydraulic motor; when the actual rotate speed is higher than the goal rotate speed, the current for improving the displacement can be provided to the hydraulic motor; when the load state is in overload, the displacement of the hydraulic motor can be adjusted to the maximum. The required power of the system can be calculated according to the current displacement of the hydraulic motor, the demand of the rotate speed, and the current pressure of the system. Current, the displacement of which can meet the requirement of the controller, is provided for the hydraulic pump according to the required power of the system, and the needed displacement can ensure that the power absorbed by the hydraulic pump can meet the requirement of the hydraulic motor. Compared with the prior art, the invention can enable the engineering machine to realize the control requirement accurately.

First and second hydraulic pumps each adapted to operate plural actuators are activated by separate electric motors respectively. In accordance with signals provided from a controller on the basis of operations of levers, the number of revolutions of the electric motor and that of the electric motor are controlled each independently and simultaneously to control the discharge rates of both hydraulic pumps.

A construction machine or industrial vehicle having a power supply system which includes a chargeable and dischargeable capacitor and a feeder circuit connecting a battery and the capacitor to a load capable of power running and regeneration. The capacitor is connected through a DC/DC converter which includes a controller that controls energy charged or discharged by the capacitor through the DC/DC converter to the load. The controller includes a power running/regeneration operation estimater which estimates an operation pattern including a point of change between power running and regeneration modes of the motor, or DC current supplied to an inverter, or control lever information and previously stored operation pattern information, and a capacitor target voltage calculator which controls an output command value of the DC/DC converter according to the estimated operation pattern so that a capacitor target voltage sequentially decreases in power running and sequentially increases in regeneration.

To provide construction machinery which is capable of improving fuel consumption rate of the engine and also capable of effectively utilizing surplus energy in the light-load mode (a mode where the engine torque at the intersection point of the iso-horsepower curve of the necessary horsepower and the governor characteristic curve of the engine is smaller than that of the rating output point of the engine). The construction machinery includes an engine, a hydraulic pump driven by the engine, and actuators driven by pressure oil supplied from the hydraulic pump. In the light-load mode where the engine torque at the intersection point of the iso-horsepower curve of the necessary horsepower and the governor characteristic curve of the engine is smaller than that of the rating output point of the engine, the number of revolutions of the engine is reduced while the engine torque is increased with respect to the intersection point, and the horsepower is made to exceed the iso-horsepower curve. With the surplus torque generated therefrom, a power generator is operated so as to generate electric power, which is charged in a power accumulation apparatus.

The invention discloses an engineering machine and a method for controlling the engineering machine. The engineering machine comprises an engine, a hydraulic pump, a hydraulic actuating mechanism and a control system, wherein the engine can drive the hydraulic pump which can supply high-pressure oil for the hydraulic actuating mechanism, the hydraulic actuating mechanism is used for driving corresponding components, the control system comprises an operating handle and a controller, and the hydraulic pump is a variable hydraulic pump; the controller can acquire the output power of the engine, external load and the adjustment range of the operating handle, and generate control signals according to a predetermined control policy; and the controller can adjust discharge capacity of the variable hydraulic pump through the control signals. The method for controlling the engineering machine comprises the following steps: firstly, acquiring the adjustment range of the operating handle, the external load and the output power of the engine; and secondly, adjusting the discharge capacity of the variable hydraulic pump according to actual working conditions. The engineering machine and the method for controlling the engineering machine can make load torque formed by the hydraulic pump matched with output torque of the engine.

A flow dividing and collecting valve bank comprises a first two-way cartridge valve (25) and a second two-way cartridge valve (27), respective first oil ports ( 7 and 9) of the first two way cartridge-valve (25) and the second two-way cartridge valve (27) are mutually communicated while respective hydraulic control valves (13 and 16) thereof are connected to a reversing valve (23) through a first internal hydraulic control oil way (14) and a second internal hydraulic control oil way (18) respectively, the reversing valve (23) is connected to one end of an internal hydraulic control inlet oil way (11) and one end of an internal hydraulic control return oil way (12), the other end of the internal hydraulic control inlet oil way (11) is communicated with the first oil ports ( 7 and 9), and a second oil port of the second two-way cartridge valve is connected with a flow-collecting oil supply way (30). In addition, the invention further provides a hydraulic system and an engineering machine comprising the flow dividing and collecting valve bank. The flow dividing and collecting valve bank can control flow dividing and collecting of oil supply of different hydraulic pumps as required, and is simple in structure, reliable in working performance and basically free of defects of spill loss, system overheating and the like.

To provide a construction machine capable of encouraging an operator to perform the driving and the operation for enhancing fuel efficiency. The construction machine includes information providing means 30 to notify the operator of the information such as the operation and/or an operational method or the like to enhance the fuel efficiency. The present construction machine provides the information by monitor display on a monitor screens 26 that is provided in an operator's cabin 11. When operating machine levers 19 and 20 are positioned at a neutral position, if an engine 40 has the idle revolution number not less than a predetermined time, the information providing means 30 provides the information such as the operation or the like enhance the fuel efficiency.

The invention discloses an engineering machine and a working space dynamic anti-collision method, device and system of the engineering machine. The working space dynamic anti-collision method comprises the following steps: receiving obstacle information around a boom of the engineering machine and boom movement information of the engineering machine; determining an obstacle coordinate according tothe obstacle information and the boom movement information; judging whether the obstacle coordinate is located in a predetermined early warning area or not; instructing an executing device to issue collision warning information outward in the case that the obstacle coordinate is located in the predetermined early warning area. The engineering machine and the working space dynamic anti-collision method, device and system of the engineering machine disclosed by the invention can detect surrounding obstacle situations during the movement process of the engineering mechanical boom in an all-weather and real-time manner, to perceive dynamic information of a lifting space, so that anti-collision warning can be controlled to ensure the safety of the engineering machine during the lifting operation process and reduce the work intensity of an operator.

The invention discloses a multi-mode control method of an electronic control engine, which is used for coordinating operating commands of all accelerator devices of automobile chassis engineering machinery. The method is carried out according to the following steps of: establishing a working relationship table corresponding to a working condition running state and an engine output state accordingto all accelerator devices and outputting the working relationship table to an electronic control unit of the electronic control engine; obtaining operating signals of all the accelerator devices; obtaining a judging result of the current working condition running state under the condition of the preset priority of all the accelerator devices; and outputting a corresponding control signal to the electronic control unit of the electronic control engine according to the judging result of the current working condition running state. The invention integrates power performance requirements of different operating conditions, thereby ensuring that the electronic control engine is reliably applied to the automobile chassis engineering machinery for fully exerting the advantages of the electronic control engine. The invention also discloses a multi-mode control system of the electronic control engine and an automobile crane with the control system.

The invention provides a locking method and a locking system of engineering machinery and the engineering machinery and aims to solve the problem that an accident may occur in the prior art when the operating engineering machinery is locked in a remote control mode. The method comprises the following steps of: carrying out remote locking operation on the engineering machinery in an unlocking state, recording locking identification information according to the locking operation, and keeping the engineering machinery in the unlocking state; and confirming that the locking identification information is recorded prior to next starting and electrification of the engineering machinery, and then setting the engineering machinery in a locking state. By adoption of the technical scheme of the invention, the occurrence of the accident can be avoided when the operating engineering machinery receives the remote locking operation.

The invention discloses a manufacturing process for a shield ring for a wheel type engineering machinery wheel and a special mould, and belongs to the technical field of engineering machinery. The manufacturing process comprises the following working procedures: heating, in which an annular ring blank is heated to be between 700 and 900 DEG C to form a heating workpiece; necking, in which the heating workpoece is subjected to necking and pressing by using a necking mould to prepare a necking workpiece; and forming, in which the necking workpiece is subjected to forming and pressing by using a forming mould to prepare a finished shield ring. The special mould comprises an upper mould body and a lower mould body, and the upper mould body comprises a necking upper mould body and a forming upper mould body. The manufacturing process and the special mould are applicable to manufacturing the shield ring for the wheel type engineering machinery wheel.

At the front end of an operating lever constituted as a joystick lever, a grip that is not allowed to rotate relative to the operating lever is attached. At the front end of the grip, a rotary operating member to be used for prime mover rotation speed adjustment is rotatably mounted. The operator rotates the rotary operating member with his finger tip while holding the grip and moving the operating lever to adjust the prime mover rotation rate and drive an actuator at the same time.

The invention discloses a control method of composite actions of a crane, which is used for controlling total flow of hydraulic oil to be distributed to multiple actuators. The liquid-feeding flow of each actuator is controlled by regulating the opening of a control valve; and the motion speed of at least one actuator is obtained in real time by using the control method, and the judgment result of regulating the opening of the valve port of the controller valve used for controlling the liquid-feeding flow of each actuator is obtained according to the fact that whether the motion speed of at least one actuator meets preset judgment conditions. Through the analysis of engineering mechanical composite actions, the preset judgment conditions of regulating the opening of the vale port of the control valve are determined, thereby effectively controlling the flow distribution from the total flow to the actuators based on the motion speeds of the actuators in real time. In addition, the invention also provides a controller and the crane with the controller.

The invention discloses a power control system and control method for the engineering machinery. The control method comprises the following steps: 10) prestoring the corresponding relationship of hydraulic pump flow, the hydraulic system pressure and the operation signal, and building the corresponding relationship of hydraulic system pressure, hydraulic pump flow and reference target revolving speed; 20) obtaining a practical hydraulic system pressure and operation signal, and selecting a hydraulic pump and target flow; 30) obtaining the reference target revolving speed corresponding to the practical hydraulic system pressure and the target flow; 40) determining the target revolving speed, the target displacement and the engine target power; and 50) controlling the engine to work according to the target revolving speed and the target power, and ensuring that the hydraulic pump works according to the target flow. With the method, the whole power system fuel economy and efficiency can be comprehensively considered. Under the condition of satisfying the load requirement, engine fuel consumption amount and hydraulic pump efficiency are used for comprehensively calculating to find the target revolving speed with the optimal economy. The invention also discloses a power control system for the engineering machinery.

The invention relates to an arm falling safe control system for a hanging arm. The arm falling safe control system comprises an amplitude variation balance valve, an amplitude variation oil cylinder, a reversing valve and a hydraulic control handle, wherein the amplitude variation balance valve is connected between the amplitude variation oil cylinder and the reversing valve, the hydraulic control handle is connected with the amplitude variation balance valve, the opening degree of a valve core of the amplitude variation balance valve is controlled through the starting pressure provided by the hydraulic control handle, the arm falling safe control system also comprises an electric proportion overflow valve and a vehicle detection system, a bypass of the electric proportion overflow valve is arranged on a pressure opening control branch, the vehicle detection system detects the extending length of the hanging arm, when the vehicle detection system detects that the arm falling is carried out under the dangerous length work conditions that the hanging arm extends to a certain length, the vehicle detection system provides electric signals for the electric proportion overflow valve, and the electric proportion overflow valve automatically reduces the opening pressure exerted on the amplitude variation balance valve to a safe pressure value.

The invention provides a control device for a hydraulic winch and an engineering machine. The control device comprises a motor, a back pressure valve and a flow regulation valve, wherein the motor is connected with the hydraulic winch, and comprises a loading cavity and a descending cavity; and the loading cavity is connected with the back pressure valve, the flow regulation valve and an oil tank sequentially. According to the control device, the flow regulation valve is used for regulating the flow of hydraulic oil discharged from the loading cavity of the motor, so that the control on a descending speed is realized, the speed of slow descending is controlled stably, and the control is more stable and reliable.

The invention discloses a method, a device and a system for controlling an engineering mechanical arm frame, which is used for improving the vibration reduction effect of the engineering mechanical arm frame. The method comprises the following steps that: when the vibration state of the engineering mechanical arm frame is determined, the following actions are performed on at least one arm frame: the current stroke of a piston in an arm frame oil cylinder which corresponds to the arm frame is obtained; the difference which is obtained by subtracting the current stroke from the initial stroke of the piston is determined as a stroke difference, and control parameters which correspond to the stroke difference are determined; and the control parameters are sent to an operation device, the operation device drives the piston to correspondingly move, so the arm frame displacement which is generated by vibration is compensated.

Disclosed are a system and a method for remotely monitoring engineering machinery operating conditions. The system comprises a data acquisition module. The data acquisition module is composed of an executive assembly, an operating assembly, a sensor and a frequency converter, wherein the executive assembly and the operating assembly are arranged on engineering machinery, and the sensor and the frequency converter are arranged on a controller part. The data acquisition module is connected with a data conversion and storage module. The data conversion and storage module, a data encryption and packing module, a data transmission module, a remote wireless network server, a data downloading module, a data decoding and decompression module, a data input module and a monitor terminal are sequentially connected. The invention further discloses the method for remotely monitoring the engineering machinery operating conditions by using of the system for the remotely monitoring the engineering machinery operating conditions. The system and the method for remotely monitoring the engineering machinery operating conditions have the advantages that feasibility is strong, reliability of analog computation results is high, internal operating conditions of the engineering machinery can be reflected close to actual conditions, equipment faults about to happen can be effectively and quickly forecast, and protective measures can be taken at any time.