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

The invention discloses an attached safety operation protection platform for building construction. The attached safety operation protection platform comprises a base, supporting frames are symmetrically arranged at the top of the base, a baffle is fixedly arranged between the top ends of the supporting frames, lead screws are arranged in the supporting frames in a penetrating manner, and one endof each lead screw penetrates through the base and extends to the middle of a first convex gear; a second convex gear is meshed with one side of each first convex gear, a rotating shaft is arranged between the middles of the second convex gears in a penetrating manner, one end of the rotating shaft is connected with the output end of a motor, the motor is fixedly installed in the base, the outer sides of the lead screws are in threaded connection with lifting nuts, one side of each lifting nut is fixedly connected with a sliding block, and a lifting platform is fixedly arranged between the sliding blocks; and a buffer seat is arranged between the supporting frames, first buffer mechanisms and a second buffer mechanism are arranged between the buffer seat and the base, and the second buffermechanism is located between the first buffer mechanisms. The attached safety operation protection platform has the beneficial effects that the supporting performance of the buffer seat is greatly improved, and meanwhile, the stability performance of the lifting platform is improved, so that the lifting operation is safer and more reliable.

The invention discloses a section storage rack. More than two single storage racks are connected in series through a connecting pipe (4) to form a storage rack set; each single storage rack consists of an A-shaped main support frame (1), a space layer supporting beam (2), a supporting foot (7) of the space layer supporting beam (2), a return air spring (3), a connecting buckle (5) and a connecting sleeve (6) positioned on the upper part of the A-shaped main support frame, and the components are arranged in a plurality of layers; one end of the space layer supporting beam (2) is movably connected with the A-shaped main support frame (1), and the other end of the space layer supporting beam (2) is movably connected with one end of the supporting foot (7); the other end of the supporting foot (7) can be fixed to or separated from the supporting beam at the lower layer of the supporting foot (7) through the connecting buckle (5); and the return air spring is arranged between each space layer supporting beam and the A-shaped main support frame. The section storage rack with the structure achieves the purposes of making the stored material get in the rack first and making the stored material get out of the rack first and ensuring small occupation of land, tidy stacking, convenient management of stacking and taking of the different materials and safe and high-efficiency hoisting operation.

The invention relates to manufacture and installation methods for a shaft furnace feeding skew bridge. The manufacture and installation methods for the shaft furnace feeding skew bridge comprise skew bridge manufacturing, skew bridge transportation, field assembly, hoisting equipment and sling calculating and selecting, and skew bridge suspension setting. The selection of skew bridge hoisting steel wire rope of hoisting equipment and sling calculating and selecting is confirmed by calculating the breaking force of the steel wire rope. The computational formula is as follows: sling tensile force S=component weight / sling number / sine of included angle between sling and horizontal plane, safety coefficient K=8, S<= breaking force of steel wire rope P / safety coefficient K, and confirming the specifications of the steel wire rope by looking up in a manual. According to the manufacture and installation methods for the shaft furnace feeding skew bridge, a construction organization can solve the manufacture and installation difficulties of a skew bridge and safely and fast complete hoisting operation, and a solid foundation is laid for the subsequent manufacture and installation of a shaft furnace structure and smooth production.

The invention provides a movable independent derrick mast lifting device and a lifting method of the lifting device. The movable independent derrick mast lifting device comprises a derrick mast stand column, a pin shaft and an embedded part. A base is arranged at the bottom of the derrick mast stand column. A pin shaft hole is formed in the base. An installation plate is arranged at the position, corresponding to the base, of the top end of the embedded part. A pin shaft hole corresponding to the pin shaft hole in the base is formed in the installation plate. The derrick mast stand column is installed on the embedded part in the manner that the pin shaft penetrates the pin shaft hole in the base and the pin shaft hole in the installation plate. By means of the structure, the performance that the lifting efficiency is high, manufacturing cost is low, demounting is convenient and use is flexible is achieved, and in addition, safe and reliable lifting work can be achieved on components within 10 tons in areas which have hidden environments or have small and narrow space or cannot be covered by a tower crane.

The invention relates to an inversely assembling process for a standing stay wire V-type tower. The process comprises the following steps: assembling a standing door type rack, assembling the head part of the stay wire V-type tower and mounting point rope systems, inversely assembling the stay wire V-type tower, and placing the stay wire V-type tower in place. According to the process, the head part of the stay wire V-type tower is lifted to a certain height above the ground through the door type rack first, then a lower tower segment is assembled below the head part of the stay wire V-type tower, after that, the head part of the stay wire V-type tower continues to be lifted, so as to continue to assemble a second lower tower segment, and the assembling continues until tower legs are assembled. In the process, the door type rack is adopted to inversely assemble the standing stay wire V-type tower in a decomposing manner, so that the load on an appliance is greatly reduced and the hoisting operation is safe and reliable; and the process is suitable for inversely assembling a large-scale stay wire V-type tower and is also suitable for occasions unsuitable to adopt large-scale cranes for operations. The process doesn't need a large-scale crane and is little limited by transportation, and a door type rack hoist system formed by combining machines and tools used frequently for daily construction can replace the large-scale crane to fulfill a task.

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 provides a self-elevating platform and a method for lifting a jacket by using the self-elevating platform. The self-elevating platform comprises a platform main body, an elevating deviceand a sliding device, wherein the elevating device is used for adjusting the vertical height of the platform main body. The sliding device is arranged on a deck of the platform main body and can moveon the deck. A part of the sliding device can extend out of the edge of the deck outwards and form a jib. The lower part of the extending-out part is connected with a hanger through a cable so as tobe connected with a to-be-lifted object. The self-elevating platform is simple in structure and low in manufacturing cost, and hanging point positioning can be effectively and accurately conducted through arrangement of the sliding device; and meanwhile, because the self-elevating platform is at seat bottom column pile, compared with a traditional floating crane, the self-elevating platform does not move along with the wave during lifting of the jacket, movement and sloshing of a hull due to the wave flow are avoided, and especially, collision between a lifted upper module and the jacket due to the fact that the hull moves along with the waves is avoided, so that lifting operation is safer and more reliable.

The invention discloses a crane running route planning method, and belongs to the technical field of crane electrical control. The crane running route planning method is characterized by comprising the following steps that a, a three-dimensional coordinate system is established; b, through a human-computer interface, the space, allowing passage of a hoisted object, of each hole opening is arranged in a PLC according to the three-dimensional coordinate system, and the boundary dimension of the to-be-hoisted object with the maximum size is arranged in the PLC according to the three-dimensional coordinate system; c, a PLC program is compiled; d, according to the walking real-time coordinate values, detected by the PLC, of a cart and a trolley, whether the hoisted objects are in safe areas in the hole openings or not is judged through comparison; and e, the distances from the positions of lifting hooks and steel wire ropes to the edges of the hole openings are calculated through formulas 6-9. According to the method, it can be ensured that a crane safely bypasses obstacles in a running interval, a larger allowable running area is released to the crane, and the operation space and the operation efficiency are greatly improved.

The invention discloses a PC track beam evacuation passage construction operation vehicle which comprises a vehicle frame, a walking mechanism, a guide mechanism and a hoisting assembly. The vehicle frame comprises a longitudinal beam and a cross beam, and the PC track beam evacuation passage construction operation vehicle is characterized by further comprising a bearing force conversion assemblyused for jacking the operation vehicle from a track beam to enable the walking mechanism to be separated from the track beam and supporting the operation vehicle on the track beam, and a parking locking assembly which is used for enabling the operation vehicle to be detachably connected and fixed to the track beam. The operation vehicle can automatically walk on the installed track beam, can alsobe suitable for a curve track beam, can stably and safely hoist and construct the steel cross beam and the steel longitudinal beam as a whole, saves time and labor, and is high in construction efficiency.

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 relates to a jacking device of a trailer for a secondary natural gas fueling station. The jacking device comprises an oil tank, an oil outlet pipe, an oil inlet pipe, a hand-directional valve, an oil absorption filter, an oil pimp and a jacking cylinder. One end of the oil absorption filter is communicated with the oil tank through the oil outlet pipe, and the other end of the oil absorption filter is connected with the oil pump through the oil outlet pipe. The oil pump is connected with the hand-directional valve through a one-way valve arranged on the oil outlet pipe. Two fast-mounted oil pipes are connected to the hand-directional valve. The other end of each fast-mounted oil pipe is connected to a lock-control valve plate which is internally provided with a hydraulic control one-way valve. The jacking cylinder is connected with the fast-mounted oil pipes through the hydraulic control one-way valve. The jacking device is simple, efficient, practical, low in cost and convenient to use.

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.