47results about How to "Large lifting weight" patented technology

An installation method for a cup type iron tower of an ultra-high voltage transmission line comprises the steps of making preparations before construction; assembling and erecting a main holding pole; assembling and erecting a tower leg on tower footing; placing a single main material part and a tower piece for assembling an iron tower body on the ground, lifting the main holding pole and assembling the tower body in a hoisting mode one by one; lifting the main holding pole and hoisting a lower bent arm and an upper bent arm of the iron tower; hoisting a middle cross arm, assembling an auxiliary holding pole on the ground and hoisting the auxiliary holding pole; assembling cross arms on the outer sides on the ground and hoisting the cross arms on the outer sides through the auxiliary holding pole; installing a ground wire bracket and an iron tower accessory; carrying out overhaul and self-inspection to eliminate defects; and dismantling the auxiliary holding pole and the main holding pole, and then finishing the construction. According to the installation method, the problem that a common holding pole is difficult to hoist in position when hoisting parts such as the cross arms on the outer sides are far away from the center of the iron tower is solved, the probability of personnel and machinery injury in the hoisting process of the cross arms on the outer sides of the bent arms is lowered, the overall construction efficiency of the cup type iron tower is improved, and the construction quality of assembling the tower is not influenced.

The invention discloses an extra-high voltage large-span iron tower assembling method, which belongs to the technical field of electric transmission and transformation electric power circuit construction processes. The method comprises the following steps of: 1, arranging a construction site, namely arranging a ground anchor, performing pole foundation construction, and arranging main material single pieces and tower sheets of an assembled iron tower body on the ground; 2, assembling a pole, mounting a hoisting system, and hoisting iron tower legs, wherein the assembled pole is a spinning self-elevating ground pole which is provided with horizontal double arms and a hydraulic downward jacking stock; 3, lifting the pole, hoisting the iron tower body section by section, and finally hoisting iron tower cross arms one by one in a segmentation mode; and 4, mounting iron tower accessories, disassembling the pole, and finally overhauling and self-checking to finish the construction. The method has the advantages of reducing the working amount of aloft operation, along with a short construction period, a small number of hoisting times and high safety; by the method, safety risks are reduced, required aloft operation personnel is greatly reduced, and labor cost is reduced; and the method has extremely good economic and social benefits.

The invention discloses a bolt sphere truss elevator, which comprises a bolt sphere truss, a hoisting device and a power device, wherein the bolt sphere truss comprises a base, a frame body and a suspension arm frame; the frame body is fixedly mounted on the base; the suspension arm frame is fixedly connected to the frame body; the suspension arm frame has an inclination angle relative to the frame body so as to form a suspended loading space below the suspension arm frame; the hoisting device is mounted on the bolt sphere truss; and the hoisting device is matched with the power device, so that the hoisting device can hoist materials in the suspended loading space. The bolt sphere truss elevator can lift materials with a larger lifting volume and heavier weight, and is convenient to operate, easy to control and safe and reliable; and moreover, the bolt sphere truss elevator can not only be installed on the ground, but also be installed on an existing building, has strong field adaptability, is easy to install or disassemble, can be reused and has obvious economic benefits.

The invention belongs to the field of mechanical automation engineering, and particularly discloses a wedge jack with a moving function. The wedge jack comprises a crack opening mechanism, swing arm mechanisms, driving mechanisms and a shell. The swing arm mechanisms are installed on the two sides of the shell respectively, and the driving mechanisms are installed on the swing arm mechanisms respectively. The crack opening mechanism is installed in the shell and comprises a motor assembly, a lead screw and nut assembly, an upper crack opening mechanism body and a lower crack opening mechanism body. The motor assembly and the lead screw and nut assembly are installed on a fixed frame in the shell, a lead screw in the lead screw and nut assembly is connected with the motor assembly, the upper side and the lower side of a nut in a lead screw and nut assembly are connected with the upper crack opening mechanism body and the lower crack opening mechanism body respectively, the upper crack opening mechanism body and the lower crack opening mechanism body are both parallelogram-shaped mechanisms, and the motor assembly drives the upper crack opening mechanism body and the lower crack opening mechanism body through the lead screw and nut assembly to conduct crack opening alternately according to opposite motion trails. The wedge jack with the moving function is high in environment adaptability and can realize free movement in the complex environments such as smooth floors, stairs, caves and ruins and weight crack opening and lifting on the heavy-load condition.

The invention discloses a multi-aircraft hoisting coordinated control system, which comprises a ground control center and a feedback device, wherein the ground control enter is used for controlling a plurality of aircrafts; the feedback device is used for measuring the current attitude information, the current acceleration and the current flight height information of a weight; each aircraft is provided with an on-board controller; the feedback device is arranged on the weight hoisted by the aircrafts; an inertial attitude measuring unit and a height sensor are integrated in the feedback device; measured information is sent to the ground control center by the feedback device; real-time control signals are sent to all the aircrafts by the ground control center after being optimized and distributed; attitude adjustment is performed on the aircrafts according to the received control signals, so that the weight is kept stable all along. The coordinated control system disclosed by the invention does not stick to the species of the aircrafts; as long as the control port protocol of the ground control center is met, a user can freely select the types of the aircrafts. The multi-aircraft hoisting coordinated control system disclosed by the invention has the advantages that the application range is broad; the operation is simple; the stability during a hoisting process is realized.

The invention belongs to aircraft suspension support technology, in particular to an aircraft air spring lifting support. The aircraft air spring lifting support of the invention includes a hydraulic station, a hydraulic lifting cylinder, a base, an auxiliary support, an air spring installation base plate, a control valve group, and a displacement sensor. The air spring installation base plate is a circular flange structure, which is set on the base for installing the air spring. Three hydraulic sound drop cylinders and three auxiliary supports are arranged around the air spring at intervals and evenly distributed on the air spring installation base plate In addition, the hydraulic lifting actuators are all provided with control valve groups and connected to the hydraulic station, and the displacement sensors are arranged on the side walls of the hydraulic lifting actuators. The air spring special lifting support for large aircraft of the present invention realizes three-point synchronous lifting of large aircraft in the support, greatly reduces the risk of aircraft support, and has extremely high safety and reliability.

The invention relates to a large-bearing-capacity sleeve unloading mechanism characterized in that: the mechanism is mainly composed of connected components of a sleeve collecting rack, a boom driving oil cylinder, a boom, a lifting hook, a sleeve detecting sensor, a lifting hook opening rate adjusting motor, an absolute value encoder, and a driving oil cylinder pedestal. A sleeve storing working face of the sleeve collecting rack is an inclined plane; holes used for installing the boom are provided on two sides of the sleeve collecting rank; the driving oil cylinder pedestal is fixed in the inner cavity of the sleeve collecting rack; the driving oil cylinder pedestal is hinged with the driving oil cylinder; a cylinder head of the boom driving oil cylinder is connected with a jib of the boom; the boom is connected to the sleeve collecting rack through a sliding bearing; the lifting hook is connected to the boom; the sleeve detecting sensor is connected to a roll loading trolley; the sleeve detecting sensor is used for detecting whether a sleeve is on the trolley; the absolute value encoder penetrates the jib through a shaft; two ends of the absolute value encoder form a clearance fit with the inner ring of the sliding bearing. With the mechanism provided by the invention, automation of sleeve unloading can be fully achieved.