94results about "Construction cranes" patented technology

A vehicle body inclination angle regulating unit (17) includes a balancing oil cylinder (10). One chamber of the balancing oil cylinder (10) is connected with an oil tank (5) and an oil source for leveling operation via a first one-way damper valve (8) and an electric controlled switch valve (7), and the other chamber of the balancing oil cylinder (10) is connected with a non-rod chamber of a suspension oil cylinder via an electric controlled shutoff valve (14) and a second one-way damper valve (9). In addition, an automatically-leveling hydropneumatic suspension mechanism includes at least two pairs of suspension oil cylinders (12), vehicle body inclination angle regulating units (17), a vehicle body transverse inclination angle sensor (1) and a control unit (3). Each suspension oil cylinder (12) is correspondingly provided with the vehicle body inclination angle regulating unit (17) including the balancing oil cylinder (10). The present invention realizes effectively dynamic leveling function of different road conditions, especially transverse slopes, of the mobile crane. The mobile crane is provided with simple operation that are all automatically performed by the control unit, which improves driving safety remarkably and prevents an accident of vehicle overturning.

The present disclosure provides embodiments directed towards a system for the control of hydraulic output by a hydraulic power source. In one embodiment, a system is provided. The system includes a hydraulic supply system having a drive, a hydraulic pump coupled to the drive, a first hydraulic output configured to supply a first flow of a hydraulic fluid from the hydraulic pump to a hydraulic lift, a second hydraulic output configured to supply a second flow of the hydraulic fluid from the hydraulic pump to a first hydraulic tool, and a controller configured to adjust a speed of the drive in response to a feedback indicative of a first load by the hydraulic lift, a second load by the first hydraulic tool, or a combination thereof.

The invention discloses an independent suspension system which comprises two suspension oil cylinders arranged between the edges of wheels on two sides and a frame respectively, a steering mechanism used for driving the wheels on the two sides to make a turn under the drive action of a power-assisted steering oil cylinder, and two swing rods corresponding to the wheels on the two sides, wherein one end part of each swing rod is hinged to the edge of the wheel on the corresponding side through a spherical hinge, and the other end part of the swing rod is hinged to fixing members fixed below a main speed reducer in a front-rear direction through two spherical hinges respectively. Through the structural improvement, tires mounted on the wheel edges can be positioned, the tire motion in the moving process of a crane is guaranteed to meet the design requirement, and the possible destructive influence of the suspension oil cylinders can be completely avoided, so that the wheels on the left and right sides can reliably and independently move; the adhesion conditions of a road surface are fully utilized, so that the control stability of the complete crane can be improved. Based on the independent suspension system, the invention further provides the crane with the independent suspension system.

The wheeled work vehicle according to the present invention has a link that links at least either one of the axles and provided at the front and the rear of the vehicle to a body, suspension hydraulic cylinders provided at the left side and the right side of the chassis to link the axle to the body in conjunction with the link and an accumulator that is made to communicate with oil chambers and of the hydraulic cylinders via restrictors.

The invention relates to the field of machinery and in particular relates to a chassis driving system of a crane, a chassis and the crane, and the chassis driving system comprises at least one mechanical drive axle, mechanical driving devices used for driving all the mechanical drive axles, at least one hydraulic drive axle, and hydraulic driving devices which are connected with all the hydraulic drive axles and are used for driving all the hydraulic drive axles. The chassis driving system of the crane is additionally provided with the hydraulic driving devices based on the original mechanical driving devices, and a hydraulic system is used for driving a hydraulic motor to drive more drive axles to run, so that the travel driving force of the crane is effectively improved, the phenomenon of insufficient driving force caused by heavy load or wheel-slip can be reduced, and the load travelling capability of the crane can be improved.

The invention relates to the technical field of engineering machinery, and discloses an engineering truck and a drive system thereof. The drive system comprises a multi-stage axle and an upper cart engine which are arranged on the engineering truck, at least one hydraulic motor which is connected with a primary axle in a driving manner, and a hydraulic pump which supplies oil to the hydraulic motor, wherein the hydraulic pump draws power from the upper cart engine. In the drive system of the engineering truck provided by the embodiment of the invention, a certain axle is driven by utilizing power of the upper cart engine and a corresponding hydraulic system, or a certain axle is driven by virtue of an independent engine and a corresponding hydraulic system thereof, so that auxiliary drive force is provided to the whole truck when the driving capability of a lower cart engine is deficient or the power transfer capability of the lower cart engine is poor, thus the driving performance of the whole truck is improved, and the requirement on power when the engineering truck is in a server road condition or climbs can be better fulfilled.

The present disclosure provides embodiments directed towards a system for the control of hydraulic output by a hydraulic power source. In one embodiment, a system is provided. The system includes a hydraulic supply system having a drive, a hydraulic pump coupled to the drive, a first hydraulic output configured to supply a first flow of a hydraulic fluid from the hydraulic pump to a hydraulic lift, a second hydraulic output configured to supply a second flow of the hydraulic fluid from the hydraulic pump to a first hydraulic tool, and a controller configured to adjust a speed of the drive in response to a feedback indicative of a first load by the hydraulic lift, a second load by the first hydraulic tool, or a combination thereof.

The invention provides a method, a device and a system for controlling suspension of an off-road tire hoister, and aims to solve the problem that the suspension switching mode of the off-road tire hoister is poor in safety in the prior art. The method comprises the following steps of: reading information of a working condition of the off-road tire hoister; if the working condition is a tire-hoisting working condition or a carrying working condition, setting a rear axle suspension state of the off-road tire hoister as a rigid state; and if the working condition is not the tire-hoisting working condition and the carrying working condition, determining and setting the rear axle suspension state of the off-road tire hoister according to a rotary angle of an upper trolley of the off-road tire hoister. By the adoption of the technical scheme, the working safety of the off-road tire hoister is enhanced.

The invention provides a suspension system control method, which comprises the following steps: judging whether frame angle of inclination exceeds the preset angle of inclination, if the angle of inclination does not exceed the preset angle of inclination, lifting and descending a suspension system; and otherwise, stopping lifting the suspension system. Additionally, the invention also provides the suspension system and a crane thereof; the suspension system comprises a tilt sensor, a height sensor and a suspension controller, wherein the tilt sensor is arranged on a revolving platform of a vehicle and is used for detecting the angle of inclination of the frame; the height sensor is arranged in the suspension system and is used for detecting the height of each suspension pivot in the suspension system; and the suspension controller controls the suspension system to lift and descend through the different value of the angle of inclination and the height of each suspension pivot. The suspension system can monitor the incline angle of the crane in real time, can give an alarm and stops the lifting and descending of the suspension system once the angle of inclination exceeds the preset value, can effectively prevent the crane from tipping over, and improves the safety of the crane when the suspension system is lifted.

The present disclosure provides embodiments directed towards a system for the control of hydraulic output by a hydraulic power source. In one embodiment, a system is provided. The system includes a hydraulic supply system having a drive, a hydraulic pump coupled to the drive, a first hydraulic output configured to supply a first flow of a hydraulic fluid from the hydraulic pump to a hydraulic lift, a second hydraulic output configured to supply a second flow of the hydraulic fluid from the hydraulic pump to a first hydraulic tool, and a controller configured to adjust a speed of the drive in response to a feedback indicative of a first load by the hydraulic lift, a second load by the first hydraulic tool, or a combination thereof.

A work vehicle according to the present invention includes an engine installed in a traveling machine body supported by traveling units, and a transmission case incorporating a hydraulic continuously variable transmission. The transmission case incorporates a forward/backward traveling switching mechanism. The work vehicle includes forward traveling valves for forward traveling hydraulic clutches, a backward traveling valve for a backward traveling hydraulic clutch, and a master valve configured to control hydraulic oil supplying to the forward traveling valves and the backward traveling valve. A part of a hydraulic circuit is formed on a front lid member of the transmission case. The forward traveling valves, the backward traveling valve, and the master valve are attached on a front surface side of the front lid member.

The embodiment of the invention provides a precise parking method, device and system for a truck in a shore crane area. The accurate parking method for the truck in the shore crane area comprises thefollowing steps: receiving a parking request, sent by a vehicle controller, of a to-be-parked truck; acquiring real-time point cloud data obtained by scanning a lane spanned by the shore crane by a laser radar; clustering the real-time point cloud data to obtain a point cloud set of the to-be-parked truck; utilizing an ICP algorithm to calculate the point cloud set of the to-be-parked truck and avehicle point cloud model, and obtaining and sending a real-time distance from the to-be-parked truck to a target parking space, wherein the vehicle point cloud model is a point cloud set obtained byscanning a truck parked in the target parking space by using the laser radar in advance. The ICP algorithm is used for calculating the real-time distance from the truck to the target parking space, the truck is controlled to accurately stop at the target parking space at a time according to the real-time distance, the whole parking process is automatically completed, manual command is not needed,the centimeter-level precision can be achieved, and the implementation cost is low.

The invention relates to an axle wheel suspension for a travelling crane. The suspension is provided with two wheels, and the wheel can be suspended on a chassis through an independent single-wheel suspension. The single-wheel suspension comprises at least one swinging arm serving as the wheel supporting part. The suspension comprises a steering lever.

A working machine includes a body and an axle which is mounted so as to be moveable relative to the body, the axle carrying at or towards each end, a ground engaging wheel by means of which the machine can travel over the ground, the machine including a speed sensor sensitive to the machine ground speed, and there being a hydraulic control system including at least one control actuator connected between the body and the axle for controlling movement of the axle relative to the body, and the hydraulic system further including at least one control valve which is operable to restrict fluid flow occurring as a result of the control actuator extending or retracting in response to axle movements relative to the body, depending upon the signal provided by the speed sensor, wherein the control valve is an electrically operated control valve, operated proportionally by a valve controller which responds to changes in machine speed, by adjusting the restriction to fluid flow so as to permit more fluid flow as the machine speed increases.

The invention discloses a suspension cylinder and a crane, relates to the technical field of engineering machinery, and solves the problem that in the prior art, the capability of a suspension cylinder for adapting to complex and severe conditions is poor. The suspension cylinder comprises a cylinder, a piston rod, a cylinder stroke detection apparatus and a vibration damping bearer, wherein one of the cylinder and the piston rod is connected with the vibration damping bearer, and the cylinder stroke detection apparatus comprises a movable body and a detection module. The detection module gives off corresponding cylinder displacement detection signals when the movable body and the detection module move relative to each other. Either the movable body or the detection module is fixedly connected with the cylinder, and the other one of the movable body and the detection module is fixedly connected with the piston rod. The crane employs the suspension cylinder provided in the invention. The capability of the suspension cylinder for adapting to complex and severe conditions is improved.

The invention discloses an air suspension control system and method for a crane and the crane and relates to the field of engineering machinery. The air suspension control system comprises an altitude sensor, a pressure sensor and a controller. The altitude sensor transmits a measured height of suspension airbag to the controller; the pressure sensor transmits a measured pressure of the suspension airbag to the controller; and the controller outputs a control signal to an executing component according to the height and pressure of the suspension airbag and a selected mode to control the attitude and pressure of the suspension airbag and respectively maintain the attitude and pressure of the suspension airbag within an attitude range and a pressure range in the selected mode, and when mode switching is needed, the controller controls the executing component to execute switching among modes, wherein the modes include a highway driving mode, an off-road driving model and a hoisting operation mode. The invention realizes control of the different modes of the air suspension and switching among the modes.

The present invention relates to a shock absorbing vehicle window arrangement for a vehicle cab, the window arrangement comprises a transparent polymer windshield, a metal frame having a width extending in the direction parallel to the plane of the transparent polymer windshield and a depth extending in the direction perpendicular to the plane of the transparent polymer windshield, the metal frame comprising: an outer portion, at least partially extending on the outside of the transparent polymer windshield, and an inner portion, at least partially extending on the inside of the transparent polymer windshield. The outer portion overlaps the transparent polymer windshield with at least 0.5% of the length of the windshield, in the direction extending perpendicular from the length axis of the portion of the metal frame that extends on the outside of the transparent polymer windshield, the metal frame comprises a horizontally extending portion comprising a flexible portion.

The invention discloses a rollover prevention control system for a vehicle. The rollover prevention control system for the vehicle comprises a controller, an angle sensor used for detecting the angle of a steering gear, and a vehicle speed sensor used for detecting the traveling speed of the vehicle. The angle sensor feeds the angle of the steering device back to the controller. The vehicle speed sensor feeds the traveling speed of the vehicle back to the controller. The controller judges the safety state of the vehicle according to the angle, fed back by the angle sensor, of the steering device and the traveling speed, fed back by the vehicle speed sensor, of the vehicle; if the vehicle is in an unsafe state, the controller starts an auxiliary vehicle brake or improves the rigidity of a vehicle suspension or increases the reverse height difference between an internal vehicle steering suspension and an external vehicle steering suspension or decreases the overall height of the vehicle suspension. According to the rollover prevention control system for the vehicle, the safety state of the vehicle is judged actively according to the vehicle speed and the angle, active safety protection is provided for the vehicle, and the safety performance and stability of the vehicle are good.

The wheel side of a drive axle with wheel member steering having a drop center rim, preferably made of steel, is provided on the wheel hub and is combined with a disc brake, which is axially inwardly offset relative to the wheel plane and which preferably has compressed an actuation. The necessary space for the disc brake arrangement is guaranteed by the sufficiently low diameter of the wheel hub in the region of the brake disc and by a comparatively large axial space for the brake system, which is created by an axially narrow design of the wheel hub transmission and a by a new design of the steering knuckle bearing and of the pertaining axle guard.