696 results about "Gantry crane" patented technology

The invention provides a tire crane automatic control system and method based on embedded edge calculation, and relates to the technical field of port automation, the tire crane automatic control system comprises a sensing and detecting layer used for collecting motion states and operation environment information of a cart, a trolley and a lifting appliance of a tire crane in real time; the core control layer is used for processing sensor data in real time and generating a control instruction; the action execution layer comprises a PLC gateway, a main control PLC and a driving motor, the PLC gateway communicates with the core control layer and is used for receiving a control instruction, and the main control PLC drives the motor to execute corresponding actions of a cart, a trolley and a lifting appliance; and the task management layer comprises an intelligent remote control console, is in communication connection with the core control layer, and is used for issuing the operation task instruction to the core control layer and receiving the system state data from the core control layer. Unmanned operation of the tire crane can be achieved, and a complete technical base is provided for port automation.

The invention discloses a modular assembly type hydraulic jacking portal crane which comprises a rail device, a hydraulic jacking device and a hydraulic jacking device. The number of the walking devices is two, the walking devices are movably arranged on the left track and the right track respectively, each walking device comprises a power unit and a walking vehicle, and the power units are connected to the walking vehicles in a replaceable mode and used for driving the walking vehicles to move along the track devices; the supporting device is detachably arranged on the walking vehicle; the cross beam is detachably arranged on the supporting device; wherein the rail device, the walking device, the supporting device and the cross beam are all of modular structures and can be adaptively adjusted and assembled according to needs, and the driving friction force of the power unit relative to the rail device can be adjusted. The crane can efficiently and conveniently complete manual installation, hoisting operation and disassembly transition in a high-floor room and other scenes with limited space, the driving friction force can be accurately and efficiently adjusted, and efficient and safe load hoisting can be achieved.

The invention relates to the technical field of gantry crane dynamic operation safety testing, in particular to a crane dynamic operation safety testing method which comprises the following steps: step 1, multi-dimensional static calibration; step 2, fault coupling simulation; step 3, structured data processing; step 4, coupling judgment; step 5, source tracing; and step 6, carrying out targeted rectification. A multi-dimensional static calibration, fault coupling simulation and targeted rectification scheme is designed according to the structure and working conditions of cart one-way walking, main beam-supporting leg rigid welding, long track bearing, bilateral braking and open-air operation of the gantry crane. The limitation of insufficient adaptability to the integrated structure of the gantry crane in the prior art is broken through, and the problem of test distortion caused by neglecting equipment attributes is solved. Aiming at the characteristics that the box type girder of the gantry crane is large in torsional rigidity, small in torsional deformation and mostly caused by internal defects or uneven external stress, progressive traceability of internal defect detection, external load checking and connection state checking is adopted.

The embodiment of the invention provides an overlapping type station construction system. The overlapping type station construction system comprises a first assembling trolley, a second assembling trolley and a gantry crane. Each of the first assembly trolley and the second assembly trolley comprises a frame, a wheel rail walking device, a side wall mounting device and an operation platform; the wheel rail walking devices are located at the bottoms of the trolleys, and the wheel rail walking devices in the two trolleys are arranged on rails on the two sides of a station bottom plate respectively and can walk longitudinally along the rails. The side wall mounting devices are used for carrying the side wall blocks, and the side wall mounting devices of the two trolleys are used for sequentially splicing the side wall blocks to the two sides of the station to form side walls; the gantry crane is used for hoisting the side wall blocks to the first assembly trolley or the second assembly trolley. According to the laminated station construction system provided by the embodiment of the invention, the laminated station can be assembled, and the construction efficiency is relatively high.

The invention relates to the field of port container loading and unloading operation auxiliary control, and discloses a container truck guiding and auxiliary container grabbing and releasing method and system based on a laser radar. The method comprises the following steps: carrying out real-time three-dimensional perception on a container truck operation area below a rail-mounted gantry crane to obtain space position and attitude information of a container truck and a container carried by the container truck; dynamic calculation is carried out according to transverse, longitudinal and directional deviations between the current position of the vehicle and the target box grabbing and releasing position of the lifting appliance, alignment adjustment guide information is generated and fed back to a driver or an automatic driving system in real time through field display equipment; container posture changes are continuously tracked in the lifting appliance descending process, deviation compensation judgment is carried out by fusing historical information under the shielding condition, and container grabbing and releasing operation condition prompts are provided for a control end. According to the invention, rapid and accurate vehicle parking positioning and box grabbing and releasing auxiliary control can be realized, repeated adjustment is reduced, the loading and unloading efficiency is improved, the collision risk is reduced, and the method is suitable for intelligent and automatic port loading and unloading operation application.

The embodiment of the invention provides a station assembling trolley. The station assembling trolley comprises a wheel rail walking device, a frame and a longitudinal beam mounting device. The wheel rail walking device is arranged at the bottom of the frame and can walk along a track on a platform bottom plate; the longitudinal beam mounting device is arranged on the frame and is used for fixing a longitudinal beam and moving the longitudinal beam to a target position for splicing; the longitudinal beam mounting device comprises a moving platform arranged at the top of a frame and capable of moving transversely relative to the frame; the lifting frame is arranged above the moving platform, and a space capable of containing the longitudinal beam is reserved between the lifting frame and the moving platform; and at least two connecting parts are arranged at the end part of the outer side of the hoisting frame and are used for temporarily connecting longitudinal beams. According to the station assembling trolley provided by the embodiment of the invention, the longitudinal beams of the station can be assembled under the application scene that a gantry crane cannot be applied, and the working efficiency is relatively high.

The invention provides a blanking system and a gantry crane, and relates to the technical field of engineering machinery. The blanking system is characterized in that a first conveying piece is arranged corresponding to a discharge port of the gantry crane; the second conveying assembly is movably arranged below the first conveying piece so as to convey materials output from the first conveying piece. The lifting parts are connected with the second conveying assembly, the lifting parts are used for corresponding to at least one of the multiple blanking points, and the lifting parts are used for ascending or descending when the blanking points are switched; and the second conveying assembly is configured to decelerate to stop when the blanking point is switched and the second conveying assembly moves from the current blanking point to the target blanking point to the deceleration area of the target blanking point, so that the lifting piece is correspondingly located above the target blanking point. According to the embodiment of the invention, through the second conveying assembly which is movably arranged, a large height difference is not needed, and material conveying to a plurality of material falling points is achieved.

The invention discloses an electric energy feedback collection and load peak suppression system for a wharf crane, and relates to the technical field of wharf power supply and distribution and energy management. Wherein the wharf crane comprises a quayside container crane (quay crane), a rail or rubber-tyred container portal crane (gantry crane) and the like, which are called cranes for short hereinafter. According to the system, instantaneous power, average power, peak duration and power increasing rate of a wharf power station, feedback power and feedback electric energy of a crane, capacity and charging and discharging parameters of an energy storage device, and electric energy quality indexes of a power grid are collected in real time; respectively calculating a peak impact index, a feedback absorption coefficient, a peak valley switching coefficient and a harmonic suppression coefficient, and comparing and analyzing with a preset threshold to generate a corresponding strategy; and integrating the results of the modules, carrying out unified scheduling on the energy storage device, and realizing power fluctuation compensation and stable output through a smooth scheduling strategy, thereby constructing an operation mechanism. According to the method, the instantaneous peak power of the wharf power station can be effectively inhibited, the feedback energy consumption capability is improved, the peak-valley scheduling economy is optimized, the electric energy quality is improved, and the safety, stability and energy efficiency of system operation are improved.

The invention relates to the field of railway freight automation, and provides an unmanned gantry crane collaborative scheduling method for an intelligent land and port logistics hub, which comprises the following steps: collecting multi-source data of an unmanned gantry crane; constructing a dynamic priority scoring model to determine a to-be-executed optimal task instruction; according to the continuous time sequence state vector of each unmanned gantry crane, generating a prediction trajectory in a future prediction time length, discretizing the prediction trajectory into a multi-dimensional space-time position point sequence, and performing overlap detection on any two unmanned gantry cranes in a future time period to generate a future potential space-time conflict event; and constructing a multi-target cost function to carry out cost value calculation to generate corresponding avoidance control parameters, generating a temporarily exclusive virtual operation corridor, and issuing a control instruction. By introducing artificial intelligence-based multi-source data deep fusion, space-time conflict prediction and dynamic virtual operation corridor control methods, the unmanned gantry crane realizes high-precision perception, high-reliability scheduling and multi-machine cooperative operation in a complex railway operation scene of an intelligent land port logistics hub.

The invention provides a vision-based auxiliary-mark-free port machinery equipment movement distance detection method and system, and relates to the field of computers.The method comprises the steps that monocular cameras are installed on lifting appliances on the two sides of a gantry crane, the gantry crane is controlled to move along a preset track, and a calibration image sequence containing ground linear features is obtained; a radial distortion parameter of the camera is calculated, a nonlinear mapping model from a pixel coordinate system to a world coordinate system is established, a ground unshielded area is selected as a dynamic monitoring area, and a texture richness thermodynamic diagram is generated; after receiving a measurement instruction of a scheduling system, initializing an optical flow accumulator, loading a current feature point set, synchronously collecting monocular video streams, and distributing the monocular video streams to at least three preprocessing threads to execute differential image enhancement; optical flow calculation is executed on all preprocessing results in parallel, a multi-mode optical flow vector field is generated, and three-level optical flow screening is implemented. The precision and the sensitivity of small-range movement measurement of the gantry crane are improved through an optical flow method, and the influence of environmental factors on a measurement result is reduced.

The invention discloses a portal crane for railway loading and unloading and a construction method and relates to the field of hoisting equipment. The portal crane for railway loading and unloading comprises at least two main beams arranged in parallel, a crane carriage, at least two conversion supports, two stand columns and two tire walking mechanisms connected to the bottoms of the two stand columns correspondingly. Tracks extending in the length direction of the main beams are arranged on the main beams. The hoisting trolley is movably arranged on each track; the at least two conversion supports are symmetrically connected to the bottoms of the main beams in a manner of rotating around the vertical axis, and the two ends of the conversion supports are configured to rotate along the vertical plane so as to support the ground or be folded; the two stand columns are connected to the bottoms of the two ends of each main beam in a telescopic mode in the height direction. According to the portal crane for railway loading and unloading and the construction method provided by the invention, the problem that large hoisting equipment cannot enter a station from a road and cannot be self-assembled under the working condition of no external hoisting equipment is solved.

This invention relates to a force feedback handle and its control method, belonging to the field of human-computer interaction technology based on tactile and force sensing. The force feedback handle is not only miniaturized but also has advantages such as low moment of inertia and good response, making it applicable to gantry crane operation, robot manipulation in extreme environments, and helicopter towing. The force feedback handle of this invention exhibits independent motion in two degrees of freedom, requiring no decoupling. In use, by interactively controlling the position of the handle in both degrees of freedom with the feedback force—that is, increasing the absolute value of the position in one degree of freedom corresponds to a corresponding increase in the damping force in the other—accidental activation can be prevented.

The invention discloses a freight yard gantry crane operation path optimization method based on linkage node recognition, and particularly relates to the technical field of freight yard gantry crane operation path optimization, which comprises the following steps: acquiring image data of a target gantry crane operation node based on the video recognition capability of a skyeye platform, extracting continuous actions in the image data through a time sequence, and determining the operation path of the target gantry crane; an action chain is formed, the action chain comprises lifting appliance descending, container moving and vehicle entering and exiting, and whether the target gantry crane operation node meets the completion condition or not is preliminarily judged based on the integrity of the action chain; on the basis of preliminarily identifying the completion condition of the operation node, the verification intervention signal is generated, the natural response behavior of the operation personnel or equipment is collected, the response feature vector is constructed and compared with the preset standard vector, so that whether the node really completes the operation or not is judged, and false path scheduling is prevented from being triggered due to false action.

The invention provides a container train wagon positioning method and device and a medium, and the method comprises the steps: employing a high-definition camera which is installed on a rail-mounted crane and has a resolution higher than a preset threshold value in a process that the rail-mounted crane moves from one end of a special container train to the other end of the special container train at a preset speed; collecting picture information of each train wagon of the special container train in real time; according to the picture information, collected in real time, of each train wagon, each train wagon is recognized, and the offset distance of the midpoint of each train wagon relative to the rail-mounted gantry crane is calculated; the absolute position of the current rail-mounted gantry crane is obtained in real time through a rail-mounted gantry crane positioning system; and calculating the absolute position of each train wagon according to the offset distance of the midpoint of each train wagon relative to the rail-mounted gantry crane and the absolute position of the current rail-mounted gantry crane. Therefore, the problems that an existing container train wagon positioning method is high in overall construction cost or low in positioning precision and cannot meet the performance requirement of automatic loading and unloading operation of a railway track crane are solved.

The utility model discloses a kind of across shaft portal crane combined track beam structure, including the reinforced concrete track beam of ground part;Combined track beam across shaft part, the combined track beam is composed of custom steel box girder and the reinforced concrete track beam arranged thereon;Custom steel box girder is connected with enclosure structure by pre-embedded steel plate, and its top elevation is flush with the top elevation of the reinforced concrete track beam of ground part;Combined track beam and the reinforced concrete track beam of ground part are connected, form continuous portal crane track support structure;The device solves the problem that the track beam cannot be set on the ground due to the limitations of site or the width and span of foundation pit in the prior art;It has the characteristics that large-diameter circular shaft portal crane track beam can be arranged across shaft.

The application relates to the technical field of warehouse handling, and discloses an auxiliary handling structure suitable for a first storage position frame and a second storage position frame, the storage position height of the first storage position frame is a first height interval, the storage position height of the second storage position frame is a second height interval, the first height interval is higher than the second height interval; the auxiliary handling structure further comprises an auxiliary handling device and a gantry crane handling device; the application is aimed at the scene that the automatic equipment cannot participate in handling due to power failure or faults of STK (a stereoscopic warehouse device), two pure mechanical handling links covering high-layer storage positions and low-layer storage positions are arranged, so that Mask Case (mask boxes) in different height intervals can be safely taken, placed and transferred. First, the Case (mask boxes) in the high-layer storage positions is transferred to a ground controllable area by a lift truck, so that the operation risk at a high position is obviously reduced, thereby reducing the safety hidden dangers caused by personnel climbing and high-altitude lifting.

The utility model discloses a circulating type soil experiment device, which belongs to the technical field of agricultural machinery experiment devices and comprises a chain scraper conveyor, and the chain scraper conveyor comprises a chain plate; the rotary tillage device, the power harrow device, the seeding device, the drying and conveying device, the spraying device and the lifting device are arranged on the chain scraper conveyor, and the lifting device is a movable gantry crane commonly used in the market; the protective guard is arranged on the periphery of the chain scraper conveyor and fixedly installed on the ground through screws; the lifting device is arranged on the chain scraper conveyor, and the heights of the rotary tillage device, the power harrow device and the seeding device can be adjusted through the lifting device. By arranging the chain scraper conveyor, soil can be conveyed, various farming operations can be carried out, various farming machines can be tested, functionality and practicability can be improved, meanwhile, soil recycling can be achieved, resource waste is reduced, cyclic experiments can be achieved, the testing effect can be improved, and the mode of simulating a real farming scene can be achieved. And the test effect can be improved.

The invention provides a grab bucket composite anti-swing control system based on angle feedback of a steel wire rope at the head of a trunk beam and a control method of the grab bucket composite anti-swing control system, and relates to the technical field of portal crane grab bucket anti-swing. The core problems of response lag, control strategy solidification and poor working condition adaptability of the open-loop anti-swing system are systematically solved. And on the basis of a closed-loop control strategy of swing angle prediction and multi-cycle compensation, the response delay of a traditional open-loop system is reduced, the swing trend is inhibited in advance through a feedforward prediction instruction, and the swing attenuation time of the grab bucket is reduced. Through cooperative compensation of the swing angle and the speed, the portal crane boom and the grab bucket are kept dynamically synchronous all the time, the repeated positioning precision is improved, the fineness of manual operation is matched, and meanwhile manual operation errors are avoided. Through a parameter self-adaption mechanism and a swing angle elimination frequency prediction function, the system can automatically adapt to various complex working conditions, the stable anti-swing effect can be kept without manually adjusting parameters, and the optimal balance of the portal crane between efficient operation and safety control is achieved.

The utility model discloses a novel integrated lifting point structure which comprises a lifting assembly and a chain which are fixed on a gantry crane, the lifting assembly comprises a shell, a driving shaft is rotatably installed on one side of the shell, a lifting core body for lifting the chain is arranged on the other side of the shell, the two ends of the chain penetrate through the lifting shell, and the driving shaft is rotatably installed on the driving shaft. The chain is wound around the chain hoisting track groove; a gear set is arranged between the driving shaft and the third large gear. The servo motor drives the driving wheel to rotate, then the belt drives the driven wheel to rotate so as to drive the driving shaft to rotate, then the gear set is matched to drive the driven shaft to rotate so as to drive the lifting driving sleeve to rotate, and in the rotating process of the lifting driving sleeve, the chain ascends and descends along with the chain lifting track groove. And the lifting point structure is integrated into a lifting assembly and is integrally arranged, so that not only is the installation convenient, but also the space is saved.

The invention provides a gantry crane boom anti-collision method and device based on millimeter wave radar, and relates to the technical field of industrial automation and safety monitoring. The method comprises the following steps: performing coordinate conversion on data acquired by a millimeter wave radar to obtain initial point cloud data, and performing irrelevant point filtering and noise point suppression on the initial point cloud data to obtain effective target point cloud data; performing clustering analysis and multi-frame time sequence consistency verification on the effective target point cloud data, and determining target point cloud clusters which exist continuously and stably; for each acquisition moment, calculating the minimum distance value between the target point cloud cluster and the axis of the boom to form a minimum distance value sequence; performing multi-frame time sequence filtering and robust estimation on the minimum distance value sequence to obtain a nearest distance evaluation value between the target object and the boom; and according to the nearest distance evaluation value, determining a safety alarm area where the target object is located currently, and performing anti-collision control. According to the invention, the accuracy of anti-collision monitoring and control of the gantry crane boom is improved.

The embodiment of the invention provides a slewing mechanism of a gantry crane and an assembly method of the slewing mechanism, and belongs to the technical field of gantry cranes. Wherein the rotary mechanism comprises a rotary support, and a rotary table is arranged on the rotary support; the mounting piece is arranged on the rotary table, and the position of the mounting piece relative to the rotary table is adjustable; the speed reducer comprises a shell and a transmission shaft arranged at the lower end of the shell, and the shell penetrates through the rotary table and the installation piece so that the transmission shaft can be in transmission connection with the rotary support. The rotary table and the installation part are connected with the debugging assembly, and the debugging assembly is configured to drive the installation part to move relative to the rotary table so as to adjust the meshing gap between the transmission shaft and the rotary support. According to the slewing mechanism provided by the embodiment of the invention, the meshing clearance between the transmission shaft and the slewing support can be conveniently adjusted, the adjusting process is accurate and convenient, and the assembly process is simplified.

The utility model discloses a dual-purpose jig frame for three-dimensional assembly and roll-roll shipping of a jacket of an offshore wind power booster station, the jig frame is composed of four independent jig frames, and each jig frame comprises a supporting leg structure, a cross beam structure and an upper leveling structure; the jig frame not only can be used for three-dimensional assembly of the jacket, but also can be used for roll-roll shipping, solves the problem that the jacket cannot be successfully boarded when large gantry crane equipment is lacked, improves the manufacturing and transportation efficiency, and reduces the construction cost.

The utility model provides a liquid tank transfer mechanism of a small-hoisting-weight gantry crane, which relates to the field of liquid tank transfer and comprises a transfer assembly, the transfer assembly comprises a hoisting trolley, a first connecting steel rope, a lifting lug, a lifting bar, a second connecting steel rope and a connecting lifting hook, and a hoisting row mechanism is arranged at the bottom of the transfer assembly. The hanging row mechanism comprises a connecting frame, an adjusting frame, a threaded groove, a fastening threaded rod, a stabilizing block, a hanging row frame, an adjusting groove, a sliding groove and a clamping groove, a stabilizing assembly is arranged at the bottom of the hanging row mechanism, the stabilizing assembly comprises a connecting belt, a main lifter and a supporting belt, and a liquid tank segment body is arranged at the top of the stabilizing assembly. When the liquid tank segment body is hoisted, the gravity center of the liquid tank segment body is ensured to be stable, and the transfer of the liquid tank segment body is not limited by the hoisting weight of a crane and the gravity center position of the liquid tank segment body through the connection of the connecting frame and the hoisting bent frame, so that the transfer safety of the liquid tank segment body is ensured.

This invention relates to the field of truss processing technology, specifically to an integrated welding fixture and welding process for trusses. The fixture includes a base plate with a first base and a second base fixed to it. The first and second bases are equipped with fixing mechanisms. A cylinder is mounted on the first base and connected to a web member positioning mechanism. Receiving grooves are provided on both the first and second bases. This invention enables rapid positioning of web members during truss welding, ensuring welding accuracy. After each web member is welded, the positioning component continues to slide, and a flip-up elastic clamping component automatically separates the welded web member from the clamping component, preventing interference with subsequent web member welding. Furthermore, after all truss welding is completed, the web member positioning component can be stored in the receiving groove, ensuring it does not interfere with the truss disassembly path. This achieves interference-free, rapid unloading and improves production efficiency.

The application discloses a gantry crane operation state monitoring method and a monitoring system. The method comprises the following steps: acquiring load data, stress data and beam span deflection of the gantry crane; determining the maximum combined stress of a beam unit of the gantry crane and the displacement value of a node of the beam unit according to the load data; performing operation state early warning of the gantry crane according to the load data, the stress data, the beam span deflection, the maximum combined stress and the displacement value; generating a maximum combined stress cloud chart according to the maximum combined stress, generating a gantry crane deformation cloud chart according to the displacement value, displaying the maximum combined stress cloud chart, the gantry crane deformation cloud chart, the load data and the operation state early warning information on a three-dimensional model of the gantry crane. The method realizes comprehensive monitoring of the gantry crane state, improves the comprehensiveness and reliability of the operation state early warning of the gantry crane, and can more intuitively display the operation state of the gantry crane through various information visualization.

The invention relates to the technical field of metallurgical engineering, in particular to an online installation and construction process for double memorial archways of a continuous mill, which is applied to installing two memorial archways on a memorial archway base of a rolling main span and comprises the following steps of: preparing for construction; memorial archway crossing; the two memorial archways are respectively vertical; the memorial archway is positioned on the false base; officially putting the two memorial archways in place; through cooperative configuration and step-by-step operation of the movable supporting frame, the multiple sets of ground beam rails and the hydraulic gantry crane jacking device, safe, efficient and high-quality online installation of the double memorial archways of the continuous mill in the limited area is achieved.

The utility model discloses a safety protection circuit of a gantry crane, which relates to the technical field of gantry crane protection and comprises a power supply module used for accessing three-phase electric energy, carrying out short-circuit power-off protection, carrying out voltage reduction processing on the three-phase electric energy and receiving the electric energy output after being processed by the power supply module through a motor control module. The motor control module controls starting and overload power-off protection of a gantry crane motor in the motor module, the alarm detection module displays overload power-off, the overload detection module carries out overload detection on electric energy input into the gantry crane motor, and when overload occurs and the motor control module does not carry out overload power-off protection, the motor control module controls starting and overload power-off protection of the gantry crane motor. And the protection control module assists in controlling the power-off work of the motor control module and performs overload power-off display. The safety protection circuit of the gantry crane can control starting work and overload power-off protection of the motor of the gantry crane, and performs auxiliary overload power-off protection after overload failure, so that the safety of the gantry crane is improved.

The utility model provides a kind of large-tonnage portal crane's supporting leg structure, including rigid supporting leg, flexible supporting leg and the main beam of connecting rigid supporting leg and flexible supporting leg;Rigid supporting leg includes two symmetrically arranged first supporting legs, the upper end of two first supporting legs is provided with first support seat, the downside middle part of first support seat is provided with inverted V-shaped gap, the inclined side surface of the both sides of inverted V-shaped gap is opposite to the side surface of first supporting leg and is located in the same plane;The lower end of two first supporting legs is connected by first ground beam, and the downside of first ground beam is provided with travelling trolley;Flexible supporting leg includes two symmetrically arranged second supporting legs, the top of two second supporting legs is provided with wedge-shaped gap correspondingly, two wedge-shaped gaps are docked, the lower end of two second supporting legs is connected by second ground beam, and the upper end of two second supporting legs is provided with second support seat.The large-tonnage portal crane's supporting leg structure is more stable, and the bearing capacity is stronger, not easy to deform, suitable for being applied to large-tonnage portal crane.

The utility model relates to an overload protection device for a rail-mounted container gantry crane, which belongs to the field of rail-mounted container gantry cranes and comprises a rack, an insertion protection component and a fixing component are arranged on the rack, and the insertion protection component comprises a connecting piece arranged at the bottom of the rack. According to the overload protection device for the rail type container portal crane, the first protection shell and the second protection shell are mounted and limited on the outer side of the shaft pin weighing sensor by mounting the insertion protection assembly, so that the shaft pin weighing sensor is protected, and the situations of collision, interference and the like of the shaft pin weighing sensor are reduced; the service life of the shaft pin weighing sensor is prolonged, the quality of the shaft pin weighing sensor is improved, the safety and efficiency of weighing operation are improved, the first protective shell and the second protective shell are further installed and limited by installing the fixing assembly, the first protective shell and the second protective shell are firmly installed on the outer side of the shaft pin weighing sensor, and the use quality of the device is improved.

The utility model belongs to the technical field of emergency power connection devices, and discloses a special device for emergency power connection of a port yard bridge, which comprises a power taking device and a cable assembly, and the power taking device can be electrically connected with the mains supply of a slide wire; the cable assembly comprises a plug assembly and a socket assembly. One end of the plug assembly is connected with a power-taking device cable; one end of the socket assembly can be electrically connected with a to-be-powered field bridge; the other end of the plug assembly can be electrically connected with the other end of the socket assembly. According to the utility model, the power taking device can be fixed on the slide wire clamping groove and can be electrically connected with the mains supply of the slide wire, and the power taking device can be electrically connected with the field bridge to be supplied with power through the plug assembly and the socket assembly, so that the power-losing field bridge can be quickly recovered to operate, and the field bridge is prevented from occupying a working channel for a long time due to power loss; the normal production activity is influenced; the emergency power supply system can provide emergency power supply for the port yard bridge, is beneficial to improving the stability and reliability of the operation of the yard bridge, and is beneficial to reducing the economic loss caused by the power loss of the yard bridge.