1798 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.

The invention discloses an engineering machine and a telescopic arm. The telescopic arm comprises a telescopic cylinder, a multi-section arm, a hydraulic system, at least one mechanical limit mechanism, a controller and a position sensor, wherein the movable end of the telescopic cylinder is telescopic in the extending direction of the telescopic arm; the hydraulic system is connected with the telescopic cylinder through a hydraulic oil circuit; the mechanical limit mechanism is matched with the movable end of the telescopic cylinder; the position sensor corresponds to the mechanical limit mechanism and is used for detecting the position of the movable end of the telescopic cylinder; and the controller outputs a control signal to a proportional control valve according to a predetermined strategy, so that the speed of the movable end of the telescopic cylinder is reduced. Through the technical scheme, the telescopic speed of the telescopic cylinder can be reduced according to the control signal, and the speed of the movable end is reduced to a low value or the movable end just stops at a position corresponding to the mechanical limit mechanism when the movable end arrives at the corresponding mechanical limit mechanism, so that collision impact between the movable end and the mechanical limit mechanism can be reduced or avoided.

The invention relates to the technical field of engineering machinery, and discloses a load-sensitive hydraulic system, a power matching control method, device and system and an engineering machine. The load-sensitive hydraulic system, the power matching control method, device and system and the engineering machine are used for improving the control conformance, the dynamic responsiveness and the stability of the load-sensitive hydraulic system and the control performance of power matching. The load-sensitive hydraulic system comprises a variable pump assembly, a main control valve set, an actuator, an overflow valve and a flow control valve set. An oil inlet of the main control valve set is communicated with an oil outlet of the variable pump assembly, and a load-sensitive feedback oil path is arranged between a control oil port of the main control valve set and a control oil port of the variable pump assembly. Two oil ports of the actuator are communicated with two working oil ports of the main control valve set respectively. An inlet oil path of the overflow valve is communicated with the load-sensitive feedback oil path, and a switch valve is arranged on the inlet oil path of the overflow valve. An inlet oil path of the flow control valve is communicated with the load-sensitive feedback oil path, and the flow control valve comprises a proportional throttle valve and a first pressure-compensated valve arranged on an inlet oil path of the proportional throttle valve.

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.

Provided is a hybrid construction machine (driving the upper swing structure (20) using a hydraulic motor (27) and an electric motor (25) together) capable of regenerating the energy of the upper swing structure (20) in deceleration or stopping into electric power and using the regenerated electric power for assisting the driving of the upper swing structure (20), while also being capable of securing satisfactory operational feeling and operation capability even when the electric motor (25) does not operate. When the electric motor (25) is not driven, a controller (51) controls a hydraulic circuit system (40) (specifically, a swing direction / flow rate control valve (42), a center bypass cut valve and a regulator) so as to increase output torque of the hydraulic motor (27) by an amount corresponding to torque to be compensated for the non-driving of the electric motor (25) compared to cases where the electric motor (25) is driven.

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.

A cab for a construction machine is provided which is cost effective, good in strength as a cab, usable in narrow sites where an obstacle exists, and good in front visibility and design. The cab for a construction machine has left front, left rear, right front and right rear pillars 12, 13, 14, 15 which vertically extend. The left rear and right rear pillars 13, 15 are made of a pipe material, and the rear part of the cab has greater rigidity than the front part of the cab. The left front and right front pillars 12, 14 are respectively constituted by at least two press-molded parts which are respectively formed into a specified shape by press molding.

The invention provides an 800 MPa-level high-strength-tenacity steel plate used for an engineering machine in an extremely cold environment and a manufacturing method for the 800 MPa-level high-strength-tenacity steel plate. The steel plate and the manufacturing method are suitable for manufacturing of mechanical components with high requirements for the strength and low-temperature tenacity of the steel plate. The 800 MPa-level high-strength-tenacity steel plate comprises the chemical components including, by weight percentage, 0.12% to 0.17% of C, 0.15% to 0.40% of Si, 0.90% to 1.50% of Mn, smaller than or equal to 0.008% of P, smaller than or equal to 0.003% of S, 0.015% to 0.060% of Al, 0.010% to 0.030% of Ti, 0.030% to 0.070% of Nb, 0.12% to 0.60% of Ni, 0.10% to 0.50% of Cr, 0.20% to 0.50% of Mo, 0.0015% to 0.0030% of B and the balance Fe and inevitable impurities. The steel plate is a high-strength steel plate with the tensile strength at an 800 MPa level, the relatively low alloy adding amount is adopted, the carbon equivalent is low, the welding performance is good, the grain of the steel plate is fine and small, the structure is dense, the inner quality is good, the performance is stable and even, the steel plate especially has the particularly excellent low-temperature tenacity, the Charpy impact absorbing energy at the test temperature of -60 DEG C is kept at a high level, and the steel plate can be used for manufacturing of the engineering machine in the extremely cold environment and is safe and reliable.

The invention discloses a crawler chassis which comprises an underframe, two crawler frames and two connecting crossbeams, wherein the two crawler frames are symmetrically arranged at the right side and the left side of the underframe; the two connecting crossbeams are symmetrically arranged at the front side and the rear side of the underframe; the ends of the right side and the left side of the two connecting crossbeams are respectively connected with the crawler frames at the right side and the left side; the front connecting crossbeam is provided with an auxiliary seat extending backward, and the rear connecting crossbeam is provided with an auxiliary seat extending forward; and the auxiliary seats on the two connecting crossbeams are detachably and fixedly connected with the underframe. The crawler chassis meets the design requirements through the length of the auxiliary seats and can meet the requirement of external size for transportation while guaranteeing working stability, thereby greatly improving the stress conditions of all parts of the crawler chassis and enhancing the rigidity of the chassis. In addition, the external size and the weight of the underframe are effectively reduced to further facilitate transportation and installation of a whole machine. On the basis, the invention also discloses a crawler crane with the chassis.

A voice-actuated machine body control apparatus for a construction machine is provided. The voice-actuated machine body control apparatus comprises speech recognition means (1a) capable of speech-recognizing a voice command representative of an instruction by voice regarding a movement of a machine body (80), machine body control means (1e) capable of controlling the machine body movement based on a result of the recognition by the speech recognition means (1a), obstacle recognition means (1b) capable of detecting the presence of an object outside the machine body which may possibly make an obstacle to the machine body movement, and avoidance means (1c) capable of inhibiting, when the presence of an object outside of the machine body is detected by the obstacle recognition means (1b), the machine body movement in accordance with the voice command preferentially to the control by the machine body control means (1e) thereby to avoid an inappropriate movement of the machine body (80). Thus, the construction machine (80) can be operated appropriately with voice uttered by the operator while the operator does not operate an joystick, a pedal or the like and does not perform an inputting operation using a switch or the like.

The invention relates to the technical field of arm support type engineering machinery and particularly discloses a method for inhibiting the vibration of an arm support. The method comprises the following steps of: a step A of detecting an amplitude A, a phase & and a period T of the vibration of the tail end of a tail section of arm support in real time; a step B of comparing the amplitude A with a preset value, entering a step C if the amplitude A is greater than the preset value, and finishing if the amplitude A is less than the preset value; and the step C of driving an arm support oil cylinder on at least one section of arm support to act, so that a motion component with an amplitude A1, a phase &1 and the period T is generated at the tail end of the tail section of arm support, wherein a difference value of the amplitude A1 to the amplitude A is less than a preset difference value, a difference value of the phase &1 to the phase & is nT / 2, and n is an odd number. The invention also discloses a system for inhibiting the vibration of the arm support and the arm support type engineering machinery with the same.

The invention discloses a Fluent-based multi-way valve simulation analysis and structure optimization method, and belongs to the field of multi-way valve simulation analysis in engineering machinery.The method comprises the following steps: firstly, building a multi-way valve test experiment table, and testing the pressure loss and hydraulic power of a multi-way valve under different opening degrees and flow rates; secondly, according to a two-dimensional drawing, establishing a three-dimensional model by utilizing Solidworks, and importing the model into ANSYS to extract a flow channel modelso as to carry out mesh generation; and importing the grid model into Fluent, setting simulation conditions, carrying out simulation, carrying out fitting on a simulation result and an experiment result, and continuously correcting the simulation model; and finally, finding out a key structure size influencing the pressure loss and the hydraulic power according to the corrected simulation model,carrying out fitting and equation solving on structure parameters and an optimization target by utilizing an algorithm toolbox of Matlab and Isight, and selecting an optimal solution according to actual requirements. The invention provides a structural parameter optimization method of a multi-way valve through a method of combining experiments and numerical simulation, and provides guidance for design and production of valve elements.

The invention provides a ramp starting method of an electric drive tramcar for preventing sliding on a ramp, and belongs to the technical field of engineering machinery. The ramp starting method comprises the following steps of: calculating an estimated gravity component Gsin theta when a vehicle travels on the ramp through a formula: F-(Gsin theta+f)=ma, wherein F is motor torque; G is gravity of the vehicle; theta is gradient of the ramp; f is resistance; m is mass and alpha is acceleration; calculating drive force required when the vehicle starts on the ramp, wherein the drive force is greater than 0.9-1.2 times of estimated gravity component. An additional sensor does not need to be added; the motor drive force with certain accuracy is calculated out by equipment of the vehicle; a certain car sense of a driver is ensured, and the vehicle does not slide on the ramp, thereby playing a starting-assisting function.

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 relates to a mixing engine device, more accurately an engine device which can use fuel and electricity, belonging to one part of construction machinery. It is suitable for various construction machineries, especially for hydraulic excavator and loader. The engine device comprises motor (1) and diesel engine (2). After two engine devices are switched by engine switching device they drive hydraulic pump (4) work. In site operation, power supply is provided and the operator is driven by the motor. In the site without power supply or in walking the operator is driven by diesel engine. The engine device is provided with low using cost, small noise, no pollution for circumstance, reliable work, simple maintenance and convenient walk. It can improve attendance rate and operation adaptability.

The invention provides an engineering machinery anti-tilting control method and device and engineering machinery, and belongs to the field of engineering machinery. The engineering machinery comprisesfour supporting legs, the anti-tilting control method comprises the following steps that the back force of the supporting legs of four supporting legs of the engineering machinery is detected; the anti-tilting threshold value is calculated according to the safety margin coefficient of the engineering machinery and the maximum set supporting leg counter force of the four supporting legs; and the operation action of the adjusting posture of the engineering machinery is controlled according to the supporting leg counter force of the four supporting legs and the anti-tilting threshold value. Theanti-tilting control method of the engineering machinery, device and the engineering machinery can accurately realize the anti-tilting safety protection of the engineering machinery under any posture.

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.