30results about How to "Safe and reliable lifting operation" patented technology

The invention discloses a crane operation route planning method, which belongs to the technical field of crane electrical control, and is characterized in that it comprises the following steps: a. establishing a three-dimensional coordinate system; The space is set in the PLC controller according to the three-dimensional coordinate system, and the external dimensions of the pre-hoisted maximum size object are set in the PLC controller according to the three-dimensional coordinate system; c. Write the PLC program; d. According to the large size detected by the PLC controller Car and trolley walking real-time coordinate value comparison judges whether the hoisting object is in the safe area in the opening; e, calculate the distance between the hook and the wire rope position and the edge of the opening through formula 6-9. The present invention can ensure that the crane safely circumvents obstacles in the operating range, and at the same time releases a larger allowable operating area for the crane, thereby greatly improving the working space and working efficiency.

The invention relates to a hoisting method of a machine set generator stator and a special mechanism thereof, which is characterized in that an assistant beam frame structure (2) is in bridge joint on two travelling crane rails (1-1) of two 80-ton travelling crane mechanisms (1) in a main factory, and a hydraulic pressure hoisting device (3) is arranged on the assistant beam frame structure (2); thus, the travelling crane rails change from one-point stress into multi-point stress or region stress so as to improve the anti-bending ability of the travelling crane rails. The invention dispenses with extra hanger frames, a girder of the travelling crane dispenses with re-hooping, and a dolly of the travelling crane dispenses with dissembling and is suitable for installation and stator maintaining and hoisting operations of 300MW-firepower machine set generator stators in China; the invention has the benefits of simple arrangement, short operation time, no need of deferred installation of the main factory structure and quick and safe hoisting operation.

The invention discloses a long rod sling, which includes a hoisting ring (1) and a grabhook assembly composed of a bracket (4) and a grabhook (11). The hoisting ring (1) and the bracket (4) are in rigid connection through a vertically arranged connecting pipe (3), the inside of which is provided with a transmission rod (8). A driving mechanism driving the upward and downward movement of the transmission rod (8) is disposed on the hoisting ring (1). The lower end of the transmission rod (8) is in connection with the grabhook (11), which closes or opens along with the upward and downward movement of the transmission rod (8). For the long rod sling disclosed in the invention, by arranging a long rigid connecting pipe between the hoisting ring (1) and the grabhook assembly, and by disposing the transmission rod in the connecting pipe and disposing the driving mechanism on the hoisting ring to drive the upward and downward movement of the transmission rod, the grabhook can close or open, thus ensuring a distance between the operation staff and a specific article, and avoiding the situation that the operation staff suffer from radioactive or toxic harm. Moreover, the safety and reliability of specific article hoisting operation can be guaranteed.

The invention discloses an automatic hook picking and hanging lifting appliance which comprises a frame and two hook devices. The two sets of opposite edges of the frame are first opposite edges and second opposite edges, two hook devices are installed on the first opposite edges, each hook device comprises a baffle and bolt pieces installed at the two ends of the baffle, the baffles are connected with the first opposite edges through hinges, and the baffles can drive the bolt pieces to move front and back during rotation. When the automatic hook picking and hanging lifting appliance is used for lifting boxes, the whole frame is installed at the tops of the boxes, a hoisting machine is connected with the baffles of the lifting appliance, the baffles are stressed to rotate during lifting, bolts are inserted into lifting holes of the boxes, automatic connection of the lifting appliance and the boxes can be achieved, and the lifting operation convenience and rapidness are greatly improved.

The invention relates to a sheep eye hook device of a crane, in particular to a hanger used on the crane for grabbing packed cargos, general cargos and other heavy objects, and the sheep eye hook device belongs to the technical field of the hoisting machinery. The hook device is characterized in that yoke plates on both sides are separated by a sleeve and form a hook body through bolts and nuts; a hook is arranged in a cross beam, hoisting nuts are used to compress a bearing installed on the upper part of the hook so as to fix the bearing on the cross beam; the cross beam is installed on the lower part of the hook body, the two ends of the cross beam are clamped by card boards and fixed by bolts. A pulley is installed on the sleeve outside a pulley shaft through a bearing; the sleeve is provided with a support ring; the both ends of the bearing are fixed by a bearing cover plate; the pulley shaft is installed in the middle of the hook body; one end of the pulley shaft is fixed by a shoulder, the other end is fixed by a card board and bolts; and the upper cover of the hook body is fixed by bolts and nuts. The sheep eye hook device has simple, compact and reasonable structure; and by using the hook device, the working intensity of the operating personnel can be lowered, the steel wire rope can be well prevented from sliding outside under an abnormal external force, and the whole hoisting operation can be safe and reliable.

The invention provides a multifunctional rotation lifting tool which comprises a lifting tool bracket, a balance slewing mechanism, a first lifting chain lifting tool, a rotation mechanism and workpiece connecting device, wherein the rotation mechanism is inserted into an inner cavity of the lifting tool bracket and can rotate relative to the lifting tool bracket; the workpiece connecting device is mounted at the end part, penetrating out of a penetrable hole of the lifting tool bracket, of the rotation mechanism; one side, far away from the workpiece connecting device, of the lifting tool bracket is connected with one lifting chain of the first lifting chain lifting tool through the balance slewing mechanism; the balance slewing mechanism and the lifting tool bracket can rotate oppositely; and one side, close to the workpiece connecting device, of the lifting tool bracket is movably connected with the other lifting chain of the first lifting chain lifting tool. With the adoption of the balance slewing mechanism and the rotation mechanism, the lifting tool can be lift vertically and rotate horizontally to be suitable for workpiece assembling stations of different angles, and the lifting tool can be transformed according to different requirements.