1413results about "Hoisting equipments" patented technology

The invention discloses a roundness supporting device for a large tubular structure and a roundness adjusting method.The roundness supporting device comprises the roundness supporting device body, the roundness supporting device body comprises a circular base and a plurality of supporting columns, and the supporting columns are distributed on the circumferential face of the circular base in a circumferential array mode; the end, away from the circular base, of each supporting column can abut against the inner wall of the circular steel pipe. The device further comprises a rotating column, the rotating column is coaxially installed on the circular base, and a hydraulic expansion piece is vertically connected to the rotating column. The end of the telescopic part of the hydraulic telescopic device is connected with a contour wheel, and the hydraulic telescopic device stretches out to enable the contour wheel to be in rolling fit with the inner wall of the circular steel pipe. The device further comprises a distance sensor, and the distance sensor can detect the change of the distance between the profiling wheel support and the axis of the rotating column in real time. According to the tubular steel roundness adjusting device, the roundness of tubular steel can be accurately adjusted, the machining requirements of large tubular steel with different pipe diameters can be met, accidents such as eccentricity of the tubular steel in the machining process can be avoided, and therefore the finished product quality and operation safety are improved.

The invention belongs to the technical field of elevator drum brakes, and relates to an elevator drum brake monitoring method fusing machine vision and infrared thermal imaging, which comprises the following steps of: acquiring an original visible light image and an original infrared thermal imaging image of a drum brake in a running state; preprocessing the original visible light image and the original infrared thermal imaging image to obtain a preprocessed visible light image and a preprocessed infrared thermal imaging image; performing image registration on the pre-processed visible light image and the pre-processed infrared thermal imaging image to obtain a registered visible light image and a registered infrared thermal imaging image; performing fusion operation on the registered visible light image and the registered infrared thermal imaging image to obtain a fused image; and performing brake state monitoring and temperature monitoring on the fused image to obtain a monitoring result. According to the invention, the running state of the brake can be rapidly monitored, and the timeliness and accuracy of monitoring data are ensured.

The invention relates to the technical field of intelligent control of heavy equipment, in particular to a hydraulic synchronous intelligent control system for segmented turnover of an overweight steel structure, and discloses the hydraulic synchronous intelligent control system for segmented turnover of the overweight steel structure. According to the system, full-field strain data of a structure surface is acquired by deploying a flexible grid sensor array, and a deformation gradient topological graph is constructed to identify an instability risk area. And a dynamic fluid network model of the hydraulic system is established, fluid-solid coupling simulation is carried out in combination with deformation characteristics, and pressure pulsation transmission paths under different control instructions are predicted. And the system dynamically optimizes a data sampling strategy and network model parameters according to a prediction path, generates a hydraulic cylinder coordination action instruction subjected to pressure balance verification, and finally drives an execution mechanism to complete turnover operation. According to the scheme, full-field real-time sensing of structural deformation and dynamic coupling prediction control of hydraulic fluid are achieved, and the safety and control precision of the overweight component in the turnover process are improved.

The utility model relates to the technical field of building hoisting, and provides a combined type double-body steel sliding beam hoisting seat which is installed on a hoisting platform, at least two guide beams are arranged at the top of the hoisting platform, the combined type double-body steel sliding beam hoisting seat comprises a steel sliding beam with a hoisting hole, and a first guide clamping groove matched with the outer sides of the guide beams is formed in the bottom of the steel sliding beam. A lifting rope penetrates through the lifting hole; the guide seats are fixedly connected with the steel sliding beams, and second guide clamping grooves matched with the outer sides of the guide beams are formed in the bottoms of the guide seats; and the driving element is connected to one side of the steel sliding beam so as to drive the steel sliding beam to slide. The anti-overturning performance of the combined type double-body steel sliding beam hanging seat is greatly improved, and the requirement for stable sliding of the hanging seat is met.

The invention discloses an extended-range hybrid power system and a control method therefor, and a crane, and belongs to the technical field of construction machinery. The extended-range hybrid power system comprises a power battery, an all-in-one controller, a first motor, a second motor and an engine, wherein the first motor is connected to a lower traveling mechanism; the engine is connected to the second motor, and the second motor is connected to an upper operating mechanism; the power battery, the first motor and the second motor are connected to the all-in-one motor, and the all-in-one motor is connected to an external power supply.

The utility model relates to the technical field of building hoisting, and provides an internally-buckled anti-overturning slidable hoisting seat, which is mounted on a hoisting platform and comprises a hoisting seat main body with a hoisting hole and slidably arranged at the top of the hoisting platform, and the hoisting hole is used for a hoisting rope to penetrate through; the limiting structure is arranged between the lifting platform and the lifting seat main body and used for limiting the lifting seat main body to be separated from the lifting platform; and the driving element is connected to one side of the lifting seat main body so as to drive the lifting seat main body to slide. The lifting seat body can be driven by the driving element to slide, translation of the steel gallery can be achieved conveniently, the lifting seat body can be prevented from being separated from the lifting platform through the arranged limiting structure, overturning of the lifting seat body during sliding is avoided, and the requirement for stable sliding of the lifting seat is met.

The utility model discloses a tail rope brake device, comprising a base, a front wheel and a rear wheel are rotatably arranged inside the base, and during the capstan braking process, the tail rope is passed between the front wheel and the rear wheel; a middle wheel is arranged inside the base and between the front wheel and the rear wheel, and the tail rope is passed under the middle wheel; a brake rubber block is arranged at the lower end of the clamping block, and when the tail rope is braked, the brake rubber block is used to brake and lock it, on the one hand, the friction between the clamping block and the tail rope is increased to achieve a rapid braking effect, and on the other hand, the brake rubber block is arranged to avoid the situation that the tail rope is damaged due to direct friction between the clamping block and the tail rope; then, a reset rod is arranged at the upper end of the clamping block, and when the clamping block is reset after locking the tail rope, the clamping block can be separated from the tail rope by directly manually resetting the reset rod, the operation is simple and convenient, the braking and resetting safety of the tail rope is higher, and no injury is caused to the operator.

Certain aspects of the disclosure provide a system and method for lifting and installing building components. In examples, the system may include a plurality of cable winches adapted to be connected to a ceiling structure; a plurality of cables, each cable having a first end connected to one of the cable winches and a second end adapted to be connected to the ceiling structure, wherein each cable of the plurality of cables is coupled to a pre-assembled building component; and a control mechanism for operating the cable winches simultaneously to lift the pre-assembled building component into a final location for installation.

A storage stores at least one piece of registered correction data including a plurality of registered values associated with a plurality of section angle ranges. A controller executes parallel winch control of causing a derricking winch and a hoisting winch to operate. The controller specifies a reference target value corresponding to a derricking angle, from the plurality of registered values. In a correction period corresponding to a point of time at which a correction operation is detected, the controller corrects the reference target value used for deriving an operation speed of the hoisting winch in the parallel winch control, in accordance with a specified value specified by the correction operation. The controller updates data of the reference target value corresponding to the correction period to data corrected with the specified value.

The invention provides a hydraulic cylinder test bed load simulation device, and relates to the technical field of hydraulic cylinder test devices, the hydraulic cylinder test bed load simulation device comprises a rack; the loading cylinder is arranged on the rack in an overturning manner, and the loading cylinder can be overturned to the horizontal or vertical direction; the guide piece is arranged on the rack, and the guide piece is used for guiding and limiting a piston rod of the loading cylinder in the axial direction when the loading cylinder is overturned to the horizontal direction; the vertical loading piece is arranged on the rack in a lifting mode in the vertical direction, and when the loading cylinder is overturned to the vertical direction, the vertical loading piece can be connected with a piston rod of the loading cylinder; and the inclined loading piece is rotationally arranged on the rack and can be connected with the piston rod of the loading cylinder. Therefore, the pressure test requirements under the use working conditions of three postures in the horizontal direction, the vertical direction and the inclined direction can be met, and the application range is expanded.

The utility model belongs to the technical field of simulation detection, and discloses a detection tool which comprises a lifting device and two support assemblies which are parallel to each other and are arranged at an interval. A walking channel capable of limiting the carrying trolley and allowing the carrying trolley to pass through is formed between the two support assemblies, and workpieces to be detected are placed on the carrying trolley. The lifting device comprises a lifting driving assembly and a supporting assembly, the lifting driving assembly is arranged on the support assembly and is in transmission connection with the supporting assembly, and the supporting assembly is located below the to-be-detected workpiece in the vertical direction and can be driven by the lifting driving assembly to ascend and descend relative to the support assembly so as to lift or lower the to-be-detected workpiece. According to the detection tool, the to-be-detected workpiece on the carrying trolley can be lifted and put down, the reliability and stability are effectively improved, and the problems of position deviation and the like of the lifted to-be-detected workpiece can be avoided.

Intelligent tilting device for a prefabricated, assembled base plate, comprising a base, a tilting support frame and a base plate, characterized in that The tilting support frame comprises a plurality of L-shaped support frames arranged side by side in a row, wherein a first tilting connection seat is provided on a rear side on the underside of a long side of the L-shaped support frame, wherein the first tilting connection seat is connected to the base by means of a pivot shaft, wherein a front side on the underside of the long side of the L-shaped support frame is connected to an end of a push rod, wherein one or more base plate support seats are provided in the middle on a underside of the long side of the L-shaped support frame, wherein the base plate support seat is provided with self-adjusting base plate support seats on both a front and rear side, and wherein an electromechanical sliding block, provided with a snap-lock section, is provided on the top of the short side of the L-shaped support frame.wherein the electromechanical sliding block can move up and down along the short side of the L-shaped support frame, and wherein an electromechanical snap lock is provided in the middle on a left or right side of the long side of the L-shaped support frame, wherein the electromechanical sliding block and the electromechanical snap lock are provided with pressure sensors, wherein the electromechanical sliding block and the electromechanical snap lock clamp the base plate and detect pressure data at a snap point; , The self-adjusting base plate support seat comprises a base plate, a top plate, a steel spring and a spring shaft, wherein an elastic cushion and a distributed pressure sensor are installed at a contact surface position on the top plate, the top plate being connected to the base plate by means of the spring shaft and the steel spring.

The present disclosure discloses a method for collaboratively controlling a multi-channel braking system of a mine hoist, including obtaining the abrasion loss of the brake shoe by detecting position information of the brake shoe of each of disc brakes in real time, dividing abrasion loss levels by determining different abrasion degrees of the brake shoe, formulating three braking force distributing modes: an average distribution, a proportional distribution, and an index distribution according to the abrasion loss levels, thereby dynamically adjusting a set braking pressure of each of the disc brakes, tracking and controlling the set braking pressure through the disc brakes by adopting a pressure closed-loop control method by utilizing a pressure signal feedback from an oil pressure sensor, implementing a collaborative braking control of the multi-channel braking system of the mine hoist based on the abrasion loss of the brake shoe.

The invention discloses assembly type AAC batten wall auxiliary installation equipment, and relates to the technical field of AAC batten wall installation, the assembly type AAC batten wall auxiliary installation equipment comprises a frame, the frame is composed of multiple sets of steel pipes, and one side of the frame is provided with a batten wall body and an auxiliary installation mechanism; the designed frame and the auxiliary mounting mechanism are combined, a steel wire rope is driven by a winch to be wound in the using process, so that one end of the bottom plate is upwards inclined and erected, a batten wall body on the bottom plate is driven to be erected, meanwhile, a pressing block can clamp the batten wall body under the condition that human intervention is not needed, and the batten wall body can be conveniently mounted. The batten wall main body is clamped and limited in the erecting process, the occurrence probability of movement and displacement is avoided, the batten wall main body on the bottom plate does not need to be manually fixed and installed in the erecting process, the working efficiency is greatly improved, and the labor intensity of workers is reduced. And instability and potential safety hazards possibly caused by manual fixing of the batten wall body are avoided, and the installation efficiency and the installation quality are improved.

One embodiment of a modular device for removal, storage, and installation of removable components of a convertible vehicle according to the present disclosure comprises a wheeled base, a vertical support structure, and a horizontal support component, and a connector plate. The vertical support structure may attach to the wheeled base in a “stored” or “deployed” position. Similarly, the horizontal support component may attach to the wheeled base in a “stored” position or to the vertical support structure in a “deployed” position. Another embodiment of a modular device further comprises a plurality of support rods and storage rods. The support and storage rods may attach to the wheeled base in a “stored” or “deployed” position. One embodiment of a system according to the present disclosure comprises a device for removing, storing, and installing removable components from convertible automobiles that is configured to connect to a mechanical lifting device.

The invention provides a movable base type series-parallel three-dimensional motion compensation device. The movable base type series-parallel three-dimensional motion compensation device comprises a three-degree-of-freedom motion compensation device used for compensating the influence of three-degree-of-freedom motion of a ship on a hoisting load by moving a crane base; the multi-cylinder driving parallel mechanism is used for compensating the influence of rotation, stretching and amplitude variation actions of the crane on the hoisting load and compensating the movement of the hoisting load in the heaving direction; and the lifting load receiving system is used for tracking the lifting load pose in real time, synchronously adjusting the stable platform pose and compensating the ship motion of the target ship. According to the three-degree-of-freedom motion compensation device adopted by the invention, the influence of ship motion on the hoisting weight is compensated by moving the crane base. The multi-cylinder driving parallel mechanism compensates for the influence of rotation, stretching, amplitude variation and other actions of the crane on the hoisting load, and the winch compensates for the movement of the hoisting load in the heaving direction, so that the hoisting load and the crane are kept relatively stable. The hoisting load receiving system can compensate ship movement of the target ship and can adjust the angle of the hoisting load receiving system in real time according to the hoisting load pose, and stable hoisting load transferring is facilitated.

The invention relates to the field of road repair, in particular to a hydraulic forcible entry device and a using method. According to the hydraulic forcible entry device, when the inspection well cover needs to be forcible entry, well cover cutting equipment and milling equipment are used for cutting and milling the periphery of the inspection well cover, so that only the bottom of the inspection well cover is connected with a shaft through a well ring; the whole hydraulic forcible entry device is lowered till the drill rod reaches the connecting face of the well ring and the shaft, and the oil cylinder keeps retracting in the lowering process; the oil cylinder extends out, the guide rod is driven to slide along the guide sleeve so as to drive the drill rod to extend outwards through the connecting rod, and an impact head slope at the outer end of the drill rod lifts the walling crib upwards so that the walling crib can be separated from the shaft; after separation, the inspection well cover and the well ring can be lifted away from the whole hydraulic forcible entry device. According to the hydraulic forcible entry device, manual forcible entry work after operation of a cutting machine is omitted, the labor intensity is reduced, the labor amount is reduced, the operation efficiency is improved, and the number of constructors needed for forcible entry is reduced.

The invention discloses a towing safety control system based on a helicopter platform. The towing safety control system comprises a central control module, a winch, a towing cable, a shear cutter and an altimeter, the towed body is located in water, one end of the towed cable is wound on the winch, and the other end is connected with the towed body; the cutting knife and the helicopter platform are relatively fixed, and the knife edge faces the towrope; the altimeter is located on the towed body and used for collecting the distance between the towed body and the bottom and transmitting the distance to the central control module. A tension sensor is arranged on the winch and used for collecting the tension of the towing cable in real time and transmitting the tension to the central control module; when the distance between the towed body and the bottom is smaller than a set value I or the decreasing speed of the distance between the towed body and the bottom is larger than a set value II and the tension of the towed cable is larger than a set value III, the central control module can control the shear cutter to cut the towed cable; and when the tension increasing speed of the towing cable is greater than a set value IV, the central control module can control the cutting knife to cut the towing cable. According to the invention, the towing safety of the helicopter platform can be improved.

The present invention relates to the technical field of electric cylinders. Disclosed is a multi-motor heavy-load electric cylinder for a crane, aiming to solve the problem in the prior art that a conventional electric cylinder having a gear reduction mechanism driven by a single motor cannot meet heavy load and long stroke requirements of a crane. The multi-motor heavy-load electric cylinder for a crane comprises multiple driving assemblies, a reduction gearbox housing, and a cylinder barrel; the cylinder barrel is connected to one side of the reduction gearbox housing; the multiple driving assemblies are evenly arranged on the reduction gearbox housing around a rod barrel; a lead screw is arranged in the rod barrel; the rod barrel is sleeved with the cylinder barrel, and has one end provided with a lead screw nut, and the other end extending to the outside of the cylinder barrel to be connected to a rod head; the lead screw nut is threadedly connected to the lead screw. The present invention can use a multi-motor driving mechanism, thereby meeting heavy load and long stroke requirements of the electric cylinder for a crane.

The invention relates to a method for active dynamic braking of an elevator system (100). The method includes detecting (310) a dynamic braking condition, acquiring (320) speed data representative of a speed of the elevator car (102), and activating (340) an active dynamic braking operation for dynamically braking movement of the elevator car if the acquired speed data indicates (330) that the speed of the elevator car reaches a predetermined monitored speed level. The active dynamic braking operation includes operating a motor inverter of an elevator drive unit of an elevator system by switching a high-voltage side switch and a low-voltage side switch of the motor inverter in a controlled manner such that a rotating field is generated in a stator winding of a traction motor, therefore, the rotation of the traction motor is dynamically braked, and the movement of the elevator car is braked. The invention also relates to an elevator drive unit, an elevator system, a computer program and a computer readable storage medium.

The invention relates to the technical field of shield segments, and discloses a large-diameter shield segment hoisting device which comprises a turnover mechanism and a hoisting mechanism. The turnover mechanism comprises a movable frame, a turnover plate and a crank driving mechanism, the turnover plate extends into a gap between the shield segment and a loading plate of the transport vehicle in a horizontal posture and is connected with the outer arc surface of the shield segment, and the crank driving mechanism drives the turnover plate to rotate, so that the shield segment reaches a vertical state; the lifting mechanism comprises a crane and a lifting appliance, the crane lifts the lifting appliance through a steel cable, the lifting appliance comprises a horizontal frame body and a vertical frame body which are fixedly connected with each other, and the lifting mechanism is used for lifting the shield segment in a vertical state to a mounting position. The device has the advantages that the automation degree and the working efficiency in the whole overturning process are high; in addition, the hoisting mechanism can achieve rapid connection and hoisting through holes in the outer arc face and the top end face of the shield segment.

A control method for controlling retraction of a boom is applied to a hydraulic system which combines retraction of the boom by self-weight with retraction of the boom by pressure. The control method includes: when the boom is retracted, controlling the self-weight retraction proportional valve to be at a maximum opening; obtaining an actual speed at which the boom is retracted; controlling a rotation speed of the pressure retraction motor to rise or an opening degree of the pressure retraction proportional valve to increase when the actual speed is less than a preset speed; and controlling the rotation speed of the pressure retraction motor to reduce or the opening degree of the pressure retraction proportional valve to decrease when the actual speed is greater than the preset speed.

The utility model relates to the technical field of automobile part machining, in particular to an automobile part overturning tool which comprises a fixing base, a first fixing plate and a second fixing plate are fixedly installed in the middle of the top end of the fixing base, a through hole is formed in the middle of the second fixing plate in a penetrating mode, and a sliding groove is further formed in the second fixing plate. The overturning assembly is rotationally mounted in the through hole, and the overturning assembly is used for overturning the clamped automobile part; and the clamping assembly is arranged at one end of the overturning assembly, and the clamping assembly is used for clamping the automobile parts. Compared with the prior art, through the arrangement of the overturning assembly, precise part clamping and overturning operation is achieved, it is ensured that parts are overturned within the needed angle range, the machining precision and consistency are improved, and the tool can be freely adjusted and changed according to specific requirements through irregular-state radian overturning; the special treatment requirements of different parts are met, and the flexibility and adaptability of the tool are improved.

The invention provides a well lid extracting device. The well lid extracting device comprises a supporting platform; the adjustable support is arranged at the bottom of the supporting platform and used for supporting the supporting platform, the adjustable support comprises four mounting bases, a supporting device arranged between the mounting bases and the supporting platform and an adjusting device used for controlling the four mounting bases to move close to or away from each other, and universal wheels are arranged at the bottoms of the mounting bases; the lifting bracket is arranged on the supporting platform in a lifting manner; the lifting drive is arranged on the supporting platform and used for driving the lifting support to ascend and descend; one end of each traction rope is connected with the lifting support, the other end of each traction rope is provided with a hook used for fixing a well lid, and the four traction ropes are symmetrically arranged on the peripheral side of the lifting support; and the rope winding device is used for releasing or locking the traction rope. The effect of improving the flexibility of the well lid lifting device is achieved.

The invention relates to a tandem unmanned helicopter cooperative hoisting system control method, which is characterized in that virtual points are introduced into a kinetic model of a tandem unmanned helicopter cooperative hoisting system, a controller based on a backstepping method is designed, and trajectory tracking control of the virtual points is realized. The tandem type unmanned helicopter cooperative hoisting system comprises a plurality of tandem type unmanned helicopters which are connected with a load through flexible cables, and the state quantity of movement of the system comprises the position and the speed of a point mass load, the position and the speed of the point mass load, the position and the speed of the point mass load and the position and the speed of the point mass load. The speed and the angular speed of each unmanned aerial vehicle and the direction and the angular speed of each connecting cable are input into the unmanned aerial vehicle thrust and the unmanned aerial vehicle angular speed, and the direction of the thrust is limited to be the direction perpendicular to the fuselage. Compared with the prior art, the method has the advantages that the dynamic characteristics of the load are considered, cooperative control of the multiple tandem unmanned aerial vehicles during transportation of the large-weight load is realized, and the control stability is ensured.

The utility model discloses an elevator braking device which is characterized by comprising an electronic hydraulic braking system, and the electronic hydraulic braking system comprises a hydraulic disc brake embraced on a guide rail of an elevator shaft, a control module used for controlling the hydraulic disc brake to tightly embrace the guide rail and a first speed sensor used for monitoring the movement speed of an elevator car. The first speed sensor is electrically connected with the control module, a speed threshold value is preset in the control module, and when the speed monitored by the first speed sensor is larger than the speed threshold value preset by the control module, the control module controls the hydraulic disc brake to tightly hold a guide rail in an elevator shaft; the first speed sensor is located on the side face of an elevator car and acts on the surface of a guide rail in an elevator shaft. The elevator braking device is a control system independent of the elevator, and can ensure that the elevator system is braked when braking fails due to faults, so that the safety performance of the elevator is effectively improved.

The invention relates to the technical field of aircraft assembly, and discloses a six-degree-of-freedom attitude adjusting system and method based on a series-parallel connection structure, the attitude adjusting system comprises a moving seat, a mounting frame, a multi-shaft driving assembly and a mounting platform, each driving assembly is provided with a servo motor and a hand wheel dual power source, and is connected with a lead screw module through a bevel gear transmission mechanism; an elastic deflection mechanism is arranged between the power source and the bevel gear and used for achieving auxiliary torque supply, and the multi-shaft driving assembly can achieve adjustment of six postures of front-back, left-right, up-down, pitching, rolling and rotation in the horizontal plane when the large power part of the aircraft is assembled. According to the six-degree-of-freedom attitude adjusting system, through the innovative design of series-parallel mechanism fusion, double-power-source redundant drive, electric cooperative control and the like, high-precision assembly and installation of heavy-weight parts such as aero-engines can be achieved, and high-precision assembly and installation of the heavy-weight parts are high in precision, high in reliability, low in labor intensity and high in adaptability.

The utility model discloses a horizontal turnover device of an elevator traction sheave, and relates to the technical field of traction sheave machining equipment. According to the technical scheme, the traction wheel clamping device is characterized by comprising a rack, a rotating disc is rotationally connected to the surface of the rack, a clamping assembly used for clamping a traction wheel is arranged on the surface of the rotating disc, and a driving assembly used for driving the rotating disc to rotate is arranged at the bottom of the rack. The utility model aims to provide a horizontal turnover device of an elevator traction sheave.

An adjustable standoff for a platform hoist that can withstand hoisting objects along a track to a predetermined height weighing up to 500 pounds. The adjustable standoff for a platform hoist includes: (1) a frame having two side assemblies with hooks to attach the standoff to only the rungs and thereby avoid blocking the side rails that act as the track for the hoist; (2) two legs that are able to adjusted radially within the plane of the side assemblies so that the standoff can withstand the force exerted by loads weighing 500 pounds being hoisted up; and (3) an anchor section to securely fasten the hoist to the structure to avoid the hoist sliding down the ridge of the roof and allowing the heavy loads to crash to the ground with potentially catastrophic consequences for both the structure and the operators below.