30results about How to "Avoid lifting accidents" patented technology

The invention discloses a real-time fault diagnosis and early warning device and a real-time fault diagnosis and early warning method for a wire rope of a coal mine hoist, and belongs to a device and a method for fault diagnosis of the wire rope of the hoist based on on-line monitoring data. A core processing module of the device is simultaneously connected with a data storage module, a program storage module, a liquid crystal and touch screen control module, a data acquisition module, an Ethernet module and an alarm module; and a power module is connected with all the modules to provide power for all the modules. The method comprises the following steps of: calculating loss percentage of the sectional area of the wire rope; transmitting real-time data of the section area of the wire rope into the core processor module through an Ethernet interface; comparing with an initial value of the section area of the wire rope; and outputting in the form of loss percentage of the sectional area of the wire rope. The device and the method have the advantages that safety parameters are set aiming at application places of the wire rope; the application is flexible; the working state of the wire rope can be judged according to the on-line monitoring data; the real-time fault diagnosis and early warning function of the wire rope can be realized; and alarm information is given.

The invention discloses a compensation protection device for door lock during the maintenance of an elevator. The compensation protection device comprises a maintenance circuit which is sequentially provided with a maintenance control circuit and a maintenance relay; the maintenance circuit is externally connected with a power supply by a power input point and a power output point; a crossover compensating circuit which is connected with the maintenance control circuit in parallel is arranged between the power input point and the maintenance relay; the crossover compensating circuit is provided with an electronic control system. The compensation protection device is convenient and can improve the efficiency in the maintenance work; after the structure is reasonably reformed, the compensation protection device can safely and rapidly remove the fault during the maintenance of the elevator by the series connection of a single-pole double-throw switch and a compensation reset button, and the accident that a lift car goes up and down all the same under the condition that a door is opened due to misoperation can be avoided; the whole structure of the compensation protection device is easy in installation and maintenance, and the compensation protection device is beneficial for technical popularization and application.

The invention belongs to the field of hoisting operation safety control, and discloses a door crane brake swing early warning system and method for segment hoisting of a subway shield tunnel, wherein the early warning system includes a hoisting data acquisition module, a data analysis and prediction module, and a segment swing early warning module The hoisting data acquisition module is used to collect the spatial information of the subway segment in the hoisting process in the downhole in real time; the data analysis and prediction module reasonably predicts the future hoisting trajectory of the subway segment through the above-mentioned collected data; the segment swing early warning module is based on The hoisting prediction trajectory calculates and judges the possible swing size of the subway segment and outputs the corresponding early warning signal. The invention predicts the hoisting trajectory based on the composite model of data drive and motion analysis, and uses reasonable and accurate predicted trajectory to carry out pre-warning control on the unsafe swing of the subway segment during the deceleration and braking phase of hoisting, and optimizes the safety control of the hoisting process of the subway segment , Actively avoid subway segment hoisting accidents.

The invention relates to an anti-drop skip tail rope suspension device and an anti-drop method for a tail rope. An integrated flange is arranged at the bottom of a suspender, a hollow steel barrel sleeves from the top of the suspender, and an outer lug boss at the bottom of the hollow steel barrel is connected with an upper plate of a rotating fork by bolts; the inner diameter of the hollow steel barrel is larger than that of the flange of the suspender, and a 1 to 2 centimeters gap remains between the bottom of an inner lug boss of the top of the hollow steel barrel and the top of the flange; when the gap is reduced to less than 1 centimeter, a proximity switch installed for measuring the gap immediately starts an audible and visual alarm to remind people of performing safety inspection; if the gap is reduced to 0, the inner lug boss at the top of the hollow steel barrel is hung on the flange of the suspender to immediately bear the weight of the tail rope and prevent the tail rope dropping so as to avoid a mine hoisting accident and guarantee the mine safety production.

The invention relates to an intelligent self-locking lifting hook which comprises a connecting seat. The lower portion of the connecting seat is provided with a bolt hole and a cavity communicated with the bolt hole. The bolt hole is connected with a bolt through a bearing. A baffle and a driven gear are arranged on the outer wall of the middle of the bolt. A spring bolt hole is formed in the lower portion of the baffle. The driven gear is connected with a drive gear. The drive gear is connected with a motor. The motor is arranged in the cavity and is connected with a controller through a signal line. The lower end of the connecting seat is provided with a lifting hook body, and a pressure sensor is arranged on the upper side face of the arc face of the lifting hook body. The pressure sensor is connected with the controller through a signal line, and an electromagnetic lock is arranged on the outer wall of the upper portion of the lifting hook. The electromagnetic lock is connected with the controller through a signal line. The upper portion of the lifting hook is provided with an opening groove matched with the baffle and a self-locking hole communicated with the opening groove. A contact type sensor is arranged at the bottom of the opening groove. The contact type sensor is connected with the controller through a signal line. The intelligent self-locking lifting hook has the beneficial effects of being simple in structure, convenient to use and low in operation cost.

The invention provides a skip unloading curved rail automatic refueling device, which relates to the technical field of mining equipment. The skip unloading curved rail automatic refueling equipment includes curved rails, guide rails, slide rails, telescopic cylinders, the first refueling pipeline, the second refueling pipeline, the third refueling pipeline, oil source, water pipeline, water source, high pressure Gas pipeline, high pressure gas source and control unit. During the operation of the skip lifting system, the present invention removes the coal slime on the unloading wheel before refueling, the coal slime is cleaned and consumes less water. , The oil consumption for refueling and lubrication operations is small. After the unloading wheel has been running for a long time, if the attitude of the unloading wheel deviates, the lifting system can be controlled to stop in time to avoid lifting accidents caused by the unloading wheel with a deviated attitude hitting the curved track.

The invention discloses a real-time generation method of a hoisting scheme of a jib crane in a vehicle controller and a method thereof, according to the method, an autonomous detection learning by the crane jib is employed, profile and position information of an obstacle in an operation area can be accurately acquired; source position and target position information of an hoisting object which are acquired by the crane jib are employed, according to an environment data table in the hoisting operation area, by combining the a hoisting performance chart of the crane, the hoisting scheme comprising parameters such as crane jib length, rotation direction and a lower elevation angle of each rotation angle enables real-time generation in a vehicle controller, and the generated hoisting scheme is optimized and simulated. The practical hoisting application shows that the system can accurately acquire the environment data in the operation area and can generate the hoisting scheme through optimization.

The invention discloses a method and system for controlling a winch of a crane to move relative to a lifting arm. The method includes the following steps of receiving a ground mode command, controlling the distance between a hook and the ground to be unchanged according to the luffing amplitude when the lifting arm carries out luffing motions, controlling the distance between the hook and the ground to be unchanged according to the stretching and retracting lengths when the lifting arm stretches and retracts, and receiving an arm tip mode command, keeping the hook in the current state when the lifting arm carries out the luffing motions, and controlling the distance between the hook to the arm tip to be unchanged according to the stretching and retracting lengths when the lifting arm stretches and retracts. According to the method and system, four work modes are set, in the manipulation process, the distance from the hook to the arm tip or to the ground is automatically kept unchanged, and manual control is needless. Compared with background technologies, on one hand, the method and system achieve automated control and effectively avoid occurrence of hoisting accidents; on the other hand, the distance from the hook to the arm tip or to the ground is controlled to be unchanged so that the method and system are suitable for different working condition requirements, and the control effect is good.

The invention discloses an anti-lifting system for container trucks based on machine vision tracking, which includes a tire crane, a camera, a container truck, a container, a video alarm machine, and control equipment in a central control room. Flush with the frame of the container truck, the field of view of the camera is perpendicular to the direction of travel of the container truck; the camera inputs the video images obtained by tracking to the video alarm machine, and the video alarm machine adopts a tracking algorithm based on fast Fourier transform online learning to obtain The video image is processed, and when it is determined that the container truck is hoisted, an alarm signal is sent to the control equipment in the central control room. The system can automatically detect whether the container is separated from the container truck, so as to avoid human error from lifting the container container truck by mistake, and realize the safety pre-control of the container yard operation.

The invention provides a skip unloading curved track automatic refueling method, which relates to the technical field of mining equipment. The skip unloading curved rail automatic refueling method uses skip unloading curved rail automatic refueling equipment to sequentially perform coal slime removal and segmented automatic refueling and lubrication operations. During the operation of the skip lifting system, the present invention removes the coal slime on the unloading wheel before refueling. The coal slime is cleaned and consumes less water. The lubricating operation consumes less oil. After the unloading wheel has been running for a long time, if the attitude of the unloading wheel deviates, the lifting system can be controlled to stop in time to avoid lifting accidents caused by the unloading wheel with a deviated attitude hitting the curved track.

The invention relates to an intelligent tower crane system and an operating method thereof. The intelligent tower crane system comprises a boom, a control unit, a lifting hook unit and a beacon generator, wherein the beacon generator is positioned on a loading and unloading operation area; the control unit is mounted in a tower crane operating room and is used for controlling the boom and a lifting hook unit; the lifting hook unit comprises a safety clearance detection unit and a sound-light alarm unit and measures distance in real time through the safety clearance detection unit and the beacon generator; when the distance is lower than a limit value, the sound-light alarm unit gives an alarm and sends an alarm signal to the control unit. The intelligent tower crane system and the operating method thereof measure the distance in real time through the safety clearance detection unit and the beacon generator; when the distance is lower than the limit value, the alarm is given, and therefore an hoisting accident is avoided. The intelligent tower crane system also has a self-learning function and can identify material types according to weight and record the hoisting track according to the material types so as to realize automatic hoisting, and the intelligent degree of the tower crane is improved.

The invention discloses a batch machining device and technology for reinforcing-steel-bar straight threads. The machining device comprises a left reinforcing-steel-bar straight thread machining device body, a right reinforcing-steel-bar straight thread machining device body, a left protective shed, a right protective shed and an automatic conveying platform for conveying to-be-machined reinforcing steel bars. The left reinforcing-steel-bar straight thread machining device body and the right reinforcing-steel-bar straight thread machining device body are used for machining the two ends of the to-be-machined reinforcing steel bars respectively. The automatic conveying platform is located between the two reinforcing-steel-bar straight thread machining device bodies. Each reinforcing-steel-bar straight thread machining device body comprises a reinforcing-steel-bar cutting device for cutting the to-be-machined reinforcing steel bars and a straight-thread threading machine for carrying out threading on the to-be-machined reinforcing steel bars. The automatic conveying platform comprises a reinforcing-steel-bar containing frame, a first transverse conveying frame, a threading machining frame and a reinforcing-steel-bar longitudinal movement mechanism. The machining technology includes the steps of 1, reinforcing-steel-bar lifting; 2, reinforcing-steel-bar cutting; 3, reinforcing-steel-bar secondary forward moving; 4, reinforcing-steel-bar threading; 5, reinforcing-steel-bar third-time forward moving. The machining device and technology are reasonable in design, easy and convenient to machine, manufacture, use and operate and good in use effect; the reinforcing-steel-bar straight thread batch machining process can be easily, conveniently and rapidly completed.