42results about "Construction cranes" patented technology

Air preparation unit (102) for a brake system (100) of a commercial vehicle, wherein the air preparation unit (102) has the following features: a foot brake module connection (114) for pneumatic or electrical and pneumatic coupling of the air preparation unit (102) with a foot brake module (116) of the brake system (100); at least one valve unit (110) for applying a control pressure to the foot brake module connection (114) for actuating the foot brake module (116); and a control unit (118) for controlling the valve unit (110), characterized by the fact that wherein the control unit (118) is coupled or can be coupled to at least one wheel speed sensor (122) of the commercial vehicle and is configured to control the valve unit (110) and / or at least one control valve (126; 200) of an anti-lock braking system of the commercial vehicle using a wheel speed sensor signal (124) generated by the wheel speed sensor (122) and wherein the control unit (118) is configured to read / tap speed signals from the same sensor which supplies speed signals to an ABS / or EBS system of the commercial vehicle.

A hydrogen-powered vehicle has a frame (2); a driver cab (3) mounted on the frame (2); a first drive wheel (4) and a second drive wheel (5), which are configured to move the vehicle (1) forward in a travel direction (D); and a hydrogen accumulator (6) comprising a plurality of supply tanks (7), which are configured to contain hydrogen, and a housing structure (8), which houses the supply tanks (7) and is coupled to the frame (2) in a movable manner between a lowered position and a raised position.

This invention provides a hydropneumatic suspension hydraulic system and an engineering vehicle. The hydropneumatic suspension hydraulic system includes a left suspension cylinder group, a right suspension cylinder group, a first connecting oil circuit, a second connecting oil circuit, a rigidity / flexibility switching valve, and a combined suspension main valve. The first connecting oil circuit connects the rod-side chamber of the left suspension cylinder group and the rodless chamber of the right suspension cylinder group. The second connecting oil circuit connects the rodless chamber of the left suspension cylinder group and the rod-side chamber of the right suspension cylinder group. Both the first and second connecting oil circuits are equipped with rigidity / flexibility switching valves. The combined suspension main valve is connected to both the first and second connecting oil circuits. The combined suspension main valve and the rigidity / flexibility switching valve cooperate to control the movement or locking of the left and right suspension cylinder groups. This invention reduces the number of main valves required by integrating the left and right suspension main valves into a single combined suspension main valve, saving installation space, simplifying hydraulic lines and pipelines, and making manufacturing easier.

To provide a work machine control method, a work machine control program, a work machine control system, and a work machine, which make it easy for an operator to intuitively grasp an operation state of a detector.SOLUTION: A work machine control method includes: acquiring a captured image Im100 of a monitoring area around the work machine; and displaying a display screen Dp1 that includes the captured image Im100 on a display device. The work machine control method further includes: when a detection processor for detecting a detection target Ob1 in the monitoring area is enabled, displaying a valid object X1 that moves in at least one of a circumferential direction and a radial direction of a virtual circle centered on a reference point set for the captured image Im100 overlapping the captured image Im100 on the display screen Dp1.SELECTED DRAWING: Figure 5

A lift device (10) includes a base (12), an arm (111), a drive actuator (18), a tractive element (16), and a steering actuator (210). The arm has a base end coupled to the base and a tractive element end. The arm includes a steering actuator interface (122) positioned along an exterior surface of the arm. The drive actuator is pivotally coupled to the tractive element end of the arm. The tractive element is coupled to the drive actuator. The steering actuator has a first end coupled to the steering actuator interface and an opposing second end coupled to the drive actuator. The arm includes an upwardly angled plate (126) extending forward of the exterior surface of the arm and past the steering actuator.

A fluid suspension system for a land vehicle is provided with a fluid biasing member with a first fluid port and a second fluid port. The fluid biasing member is adapted to be connected to a chassis and a first axle of a land vehicle spaced apart from a pivotal connection of the first axle to pivot the first axle relative to the chassis upon movement to a first position and a second position. A proportional valve is in fluid cooperation with the first fluid port of the fluid biasing member to permit fluid to flow to the fluid biasing member to bias the fluid biasing member to the first position, and to permit the fluid to flow from the fluid biasing member to the proportional valve, and to the second fluid port of the fluid biasing member to bias the fluid biasing member to the second position.

The present invention relates to a chassis of a truck crane. To solve the problem that the uneven distribution of axle loads in the suspension system of the existing all-terrain crane chassis affects the service life of tires and axles, a chassis oil-gas suspension control system, a control method and a truck crane are provided. The chassis oil-gas suspension control system includes multiple groups of suspension cylinder groups and a control unit. The suspension cylinders on both sides in each intermediate axle suspension cylinder group are connected to the suspension cylinders on the same side in the adjacent suspension cylinder group through the solenoid valves on the same side in the solenoid valve group. Each solenoid valve connects or cuts off the two suspension cylinders it connects. The control unit is connected to each solenoid valve. Only one solenoid valve group in all the solenoid valve groups is in the cut-off state. In the present invention, by selecting to control the on-off of the solenoid valve group, the front and rear two grouping situations of all the suspension cylinder groups can be selected, so that the relative distribution of axle loads on each axle is relatively uniform, avoiding the influence on the service life of tires and axles caused by axle load differences.

[Problem] To provide a work machine control method, a work machine control program, a work machine control system, and a work machine with which an operator can easily and intuitively comprehend an actuation state of a detector. [Solution] The work machine control method includes: acquiring a captured image Im100 of a monitoring area around a work machine; and displaying a display screen Dp1 including the captured image Im100 on a display device. The work machine control method further includes: in the case where a detection processor for detecting a detection target Ob1 in a monitoring area is enabled, displaying a valid object X1, which moves in at least one of a circumferential direction and a radial direction of a virtual circle centered on a reference point set for the captured image Im100, in a superimposed manner on the captured image on the display screen Dp1.

Embodiments of the present application provide a suspension grouping method and device, a controller, an engineering vehicle and a storage medium. The method comprises: leveling the suspension of the engineering vehicle when the engineering vehicle is in a horizontal state after the engine of the engineering vehicle is started; determining the front axle load and the rear axle load of the engineering vehicle in the current suspension grouping mode; obtaining the number of front axle bridges and the number of rear axle bridges; determining the total vehicle weight of the engineering vehicle according to the number of front axle bridges, the front axle load, the number of rear axle bridges and the rear axle load; determining the center of gravity position of the engineering vehicle; calculating the front axle load and the rear axle load of the engineering vehicle in other suspension grouping modes according to the total vehicle weight and the center of gravity position; and determining the target suspension grouping mode, in which the absolute value of the difference between the front axle load and the rear axle load is the smallest. The technical solution can automatically select the optimal suspension grouping mode, and avoid faults caused by excessive single axle load.

The invention relates to an electrically drivable steering axle (10) having an axle housing (11), an electric motor (12), a transmission (13), a differential (14) with a first output shaft (18) and a second output shaft (18′), a first wheel head (15), a second wheel head (16) and a steering linkage (17, 17′, 17″). The electric motor (12) is drive-connected to the first wheel head (15) and to the second wheel head (16) via the transmission (13) and the differential (14). The steering axle (10) according to the invention is distinguished by the fact that the electric motor (12), the transmission (13), and the differential (14) are arranged coaxially with the first output shaft (18) and the second output shaft (18′). The invention additionally relates to a corresponding vehicle.

The invention discloses a steering mechanism and an independent suspension system. The steering mechanism comprises a steering rocker arm unit, a mid-position locking cylinder, a first power steering cylinder, a second power steering cylinder, a first steering linkage and a second steering linkage; one end of the mid-position locking cylinder is connected with the steering rocker arm unit, and the other end is hinged to a frame; one ends of the first power steering cylinder and the second power steering cylinder are connected with the steering rocker arm unit, and the other ends are hinged to the frame; and one ends of the first steering linkage and the second steering linkage are connected with the steering rocker arm unit, the other ends are connected with knuckle arms, and the knuckle arm is fixed on a wheel rim.

To provide a crane which can travel by electric power.SOLUTION: The crane comprises: a slewing upper structure supporting a boom; and a running vehicle body which supports the slewing upper structure and runs on the basis of electric power of a power source portion. The running vehicle body has: high-voltage equipment which is the power source portion or a device connected to the power source portion; a cooling device which is arranged above the high-voltage equipment, has an air exhaust port with an opened upper portion and cools the power source portion; and a dewatering tray which is provided between the high-voltage equipment and the cooling device, wastes water ingressed into the cooling device from the air exhaust port.SELECTED DRAWING: Figure 6

Provided are a method for controlling a work machine, a control program for a work machine, a control system for a work machine, and a work machine, whereby an operator can easily and intuitively grasp the operating state of a probe device. A method for controlling a work machine includes: acquiring a captured image (Im100) of a monitored area around the work machine; and causing a display screen (Dp1) including the captured image (Im100) to be displayed on a display device. The method for controlling the work machine further includes, when a detection processing unit for detecting the object to be detected (Ob1) in the monitoring region is active, displaying an active target (X1), which moves in at least one of the circumferential direction and the radial direction of a virtual circle centered on a reference point set for the captured image (Im100), on the captured image (Im100) in the display screen (Dp1) so as to overlap the active target (X1) on the captured image (Im100).

The embodiment of the invention provides a suspension grouping method and device, a controller, an engineering vehicle and a storage medium. The method comprises the steps that after an engine of the engineering vehicle is started, a suspension of the engineering vehicle is leveled when the engineering vehicle is in a horizontal state; the axle load of a single front axle and the axle load of a single rear axle of the engineering vehicle in the current suspension grouping mode are determined; obtaining the number of front axles and the number of rear axles; determining the whole vehicle weight of the engineering vehicle according to the number of the front axles, the axle load of the single front axle, the number of the rear axles and the axle load of the single rear axle; determining the center-of-gravity position of the engineering vehicle; according to the weight of the whole vehicle and the gravity center position, the axle load of the front axle and the axle load of the rear axle in other suspension grouping modes are calculated; and determining a target suspension grouping mode, wherein the absolute value of the difference value between the axle load of the single front axle and the axle load of the single rear axle is minimum. According to the technical scheme, the optimal suspension grouping mode can be automatically selected, and faults caused by overlarge axle load of a single axle are avoided.

A system and method of this disclosure control an on / off state of a power take-off by monitoring the power demand of a fluid power circuit that includes the power take-off and a piece of equipment connected to the power take-off. The power demand may be indicated by a pressure or temperature of a fluid power circuit, by a motion of the equipment or its hand-held controller, or by an engine torque of an engine driving the power take-off. When the equipment transitions between an off state and an on state, the controller automatically engages the power take-off. When the equipment is in the on-state for a predetermined amount of time and the power demand is at or below a predetermined threshold during the predetermined amount of time—thereby indicating idle time or an inactive state of the equipment—the controller automatically disengages the power take-off.

[Problem] A work machine control method, a work machine control program, a work machine control system, and a work machine that can improve the reliability of the movement of the work machine are provided. [Solution] The work machine control method includes actuating a first limiting unit 48, determining whether or not the first limiting unit 48 has an abnormality, and actuating a second limiting unit 49 based at least on a determination result of determining whether or not the first limiting unit 48 has an abnormality. The first limiting unit 48 limits a movement of a drive unit that drives a work machine 3. The second limiting unit 49 limits the movement of the drive unit separately from the first limiting unit 48.

The invention relates to the technical field of vehicle suspensions, in particular to a suspension valve group, a vehicle and a control method. The valve group body comprises the first reversing valve, the second reversing valve and the third reversing valve, the first reversing valve is used for controlling the on-off state of the rodless cavity and the rod cavity of the suspension oil cylinder, the differential function of the suspension oil cylinder can be achieved, the effective movement stroke of the suspension oil cylinder can be increased, and therefore the ground touching performance of a suspension is improved; the third reversing valve is used for controlling the on-off state of the second energy accumulator and a rodless cavity of the suspension oil cylinder, and self-adaptive adjustment of the rigidity of the suspension is achieved. By controlling the valve position states of the first reversing valve, the second reversing valve and the third reversing valve of the valve bank body, self-adaptive adjustment in different axle load states can be achieved so as to improve the driving smoothness.

The work machine control method includes: acquiring a captured image of a monitoring area around a work machine; and displaying a display screen including the captured image on a display device. The work machine control method further includes: in the case where a detection processor for detecting a detection target in a monitoring area is enabled, displaying a valid object, which moves in at least one of a circumferential direction and a radial direction of a virtual circle centered on a reference point set for the captured image, in a superimposed manner on the captured image on the display screen.

A trailer for towing by a power vehicle is provided and generally includes a frame and a tandem wheel assembly. The frame forms an undercarriage chassis and the tandem wheel assembly positioned under the undercarriage chassis. The tandem wheel assembly includes a rear wheel assembly and a front wheel assembly. An extension assembly is provided and moves the front wheel assembly between trailing position and a self-propelled position where the rear wheel assembly and the front wheel assembly are positioned to equally support the undercarriage chassis.

The invention discloses a steering mechanism and an independent suspension system. The steering mechanism comprises a steering rocker arm unit, a mid-position locking cylinder, a first power steering cylinder, a second power steering cylinder, a first steering linkage and a second steering linkage; one end of the mid-position locking cylinder is connected with the steering rocker arm unit, and the other end is hinged to a frame; one ends of the first power steering cylinder and the second power steering cylinder are connected with the steering rocker arm unit, and the other ends are hinged to the frame; and one ends of the first steering linkage and the second steering linkage are connected with the steering rocker arm unit, the other ends are connected with knuckle arms, and the knuckle arm is fixed on a wheel rim. The invention eliminates a rocker arm sleeve and rocker arm supports, which significantly reduces the overall weight, reduces the required space for the steering mechanism, allows for a more compact arrangement of components, simplifies the manufacturing process, and reduces economic costs.

A hydrogen-powered tracked vehicle extends along a longitudinal axis and comprises a frame (2); a driver cab (3) mounted on the frame (2); a first track (4) and a second track (5), which are configured to move the tracked vehicle (1) forward in a travel direction (D) substantially parallel to the longitudinal axis (A1); and a hydrogen storage (6; 14; 21) comprising a first supply tank (7; 15) and a second supply tank (8; 16), which are configured to contain hydrogen, extend along respective lateral axes (A2, A3) substantially parallel to the longitudinal axis (Al), and are arranged on opposite bands of the longitudinal axis (A1) at respective distances from the longitudinal axis (Al).

A method of on-demand energy delivery to an active suspension system comprising an actuator body, hydraulic pump, electric motor, plurality of sensors, energy storage facility, and controller is provided. The method comprises disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, detecting a wheel event requiring control of the active suspension; and sourcing energy from the energy storage facility and delivering it to the electric motor in response to the wheel event.

A hydrogen-powered vehicle has a frame; a driver cab mounted on the frame; a first drive wheel and a second drive wheel, which are configured to move the vehicle forward in a travel direction. The hydrogen-powered vehicle also has a hydrogen accumulator comprising a plurality of supply tanks, which are configured to contain hydrogen, and a housing structure, which houses the supply tanks and is coupled to the frame in a movable manner between a lowered position and a raised position.

A mobile working machine is proposed comprising a vehicle frame, a vertical longitudinal center plane, and a drive unit for driving at least one first drive axle (2) of the drive unit, wherein the drive unit comprises at least one drive motor (5), wherein the drive axle (2) comprises at least one first drive element (1) and one second drive element (1), wherein the drive axle (2) has at least one differential gear (3) with one input and two outputs for the first and the second drive element (1), wherein the differential gear (3) comprises at least one differential lock (3), and wherein at least one control unit (10) is provided for electrical and / or electronic control of at least the drive unit, whereby at least some of the disadvantages of the prior art are improved or avoided, in particular the transmission of tractive force is optimized and / or no traction or...This is achieved, among other things, by providing at least one sensor unit (15) for detecting a parameter of the drive unit, wherein the sensor unit (15) comprises at least one speed sensor for detecting a speed of the drive unit and / or a tractive force sensor for detecting a tractive force of the drive unit, wherein the control unit (10) is designed as a differential control unit (10) for controlling the differential lock (3), wherein the differential lock (3) can be switched on or off by the differential control unit (10) depending on the detected speed and / or the detected tractive force.

The invention relates to the technical field of vehicle suspensions, in particular to a suspension valve group, a vehicle suspension system and a control method. The first reversing valve is arranged between the rod cavity of the suspension oil cylinder and the oil tank, switching-on and switching-off between the rod cavity and the hydraulic oil tank can be achieved through reversing of the first reversing valve, when the rod cavity communicates with the oil tank, the rod cavity relieves pressure, and therefore under the same load bearing state (a rodless cavity of the suspension oil cylinder communicates with the first energy accumulator), the hydraulic oil tank can be opened or closed. The cylinder diameter of the oil cylinder of the suspension can be designed to be smaller, and the interactive flow between the oil cylinder and the energy accumulator is reduced, so that the purpose of damping reduction is achieved. When the vehicle is supported and after the vehicle is supported, and the first reversing valve is switched to a stop position, the rod cavity of the suspension oil cylinder is disconnected from the oil tank and can be closed, the suspension oil cylinder cannot be lengthened when the vehicle is supported and after the vehicle is supported, tires can be separated from the ground, and the tires are separated from the ground, so that safe operation of the vehicle is facilitated.

A crane includes: an upper slewing body that supports a boom; and a travel vehicle body that supports the upper slewing body and travels based on electric power of a power supply unit, wherein the travel vehicle body includes: a high-voltage equipment that is the power supply unit or a device connected to the power supply unit, a cooling device that is arranged above the high-voltage equipment, has an exhaust port which is open at a top, and cools the power supply unit, and a drainage tray that is provided between the high-voltage equipment and the cooling device and drains water which has entered the cooling device from the exhaust port.

The present invention provides an articulated off-road crane chassis, which comprises a vehicle frame, a hydraulic suspension mechanism and a plurality of axles. The plurality of axles are mounted on the vehicle frame through the hydraulic suspension mechanism, and wheels are mounted on the axles. The vehicle frame includes a front vehicle frame and a main vehicle frame, and the front vehicle frame is hinged to the main vehicle frame through a first rotating shaft. The plurality of axles include a front axle and a main axle. The hydraulic suspension mechanism at least includes a front-side hydraulic suspension and an active hydraulic suspension. The front axle is mounted on the front vehicle frame through the front-side hydraulic suspension, wheels are mounted on both sides of the front axle, and an angle sensor is mounted on the front axle. The main axle is mounted on the main vehicle frame through the active hydraulic suspension, and wheels are also mounted on both sides of the main axle. The articulated vehicle frame and the active hydraulic suspension enable the boom and the load to always maintain a horizontal posture during the driving of the crane. Moreover, the articulated vehicle frame can arrange the main weight on the main vehicle frame of the crane, and ensure the horizontal posture of the main vehicle frame through the active hydraulic suspension, reducing the moment of inertia and the longitudinal impact of the crane.

Aspects of the present disclosure relate to a locking control method for a pivot axle of a wheeled working machine including: determining, using a multibody simulation model, a current posture and motion state of the working machine and static and dynamic forces acting on the working machine; determining a relevant tipping line based on a current locking status of a pivot axle of the working machine; calculating torques acting on the working machine based on the information on current posture, motion state, static and dynamic forces; determining a control command for a pivot axle locking mechanism of the working machine based on the calculated torques and the tipping line; and providing the control command to a pivot axle locking mechanism.

The invention discloses a crane hydro-pneumatic suspension control method, system, device and equipment, and belongs to the technical field of engineering vehicle control, and the method comprises the following steps: executing hydro-pneumatic suspension lifting control and variable damping adjustment control by an arithmetic unit; the hydro-pneumatic suspension lifting control comprises the step of receiving hydro-pneumatic suspension lifting instructions, wherein the hydro-pneumatic suspension lifting instructions comprise a hydro-pneumatic suspension lifting instruction and a hydro-pneumatic suspension descending instruction. The following steps are repeatedly executed until the hydro-pneumatic suspension reaches the target position: based on the hydro-pneumatic suspension ascending instruction, the hydraulic system is controlled to execute throttling increasing / oil supply reducing control when the hydro-pneumatic suspension ascends; and based on the hydro-pneumatic suspension descending instruction, when the hydro-pneumatic suspension descends, the hydraulic system is controlled to execute throttling reduction / oil supply increase control and keep back pressure. The problems that in the prior art, the crane suspension is low in leveling efficiency and poor in precision, and the stability is poor due to the fact that adaptability to different loads and vehicle speed working conditions in the running process is insufficient are solved. The service life of the structure is influenced by non-uniform shaft load distribution of each supporting point; and the operation flexibility is limited.

The invention relates to a construction- and / or material-handling machine such as a crane, excavator or tracked vehicle, comprising an internal combustion engine that drives one or more energy-consuming devices such as a pump, winch, actuator for a structure or working-unit drives of the construction- and / or material-handling machine via a mechanical drive train. According to the invention, an electric drive for driving the mechanical drive train is provided and can be engaged by means of a clutch and decoupled from the mechanical drive train.