173results about How to "Hoisting safety" patented technology

The invention relates to a curing device for a precast beam, which is characterized in that: a steaming shelf and a piece of tarpaulin covering around the shelf together form a curing shield; the shelf comprises a rigid framework and a cover plate, and a temperature control device and a humidifying device are arranged in the curing shield; the temperature control device comprises a temperature regulating device and a temperature measuring device. The invention also relates to the curing method for the precast beam, which is characterized in that: the moisture and temperature preservation curing temperature should be controlled between 30 and 35 DEG C, and water can be splashed on the concrete surface to maintain the moisture. The curing device and method for the precast beam in the invention has the advantages of convenient hoisting and mounting, small temperature difference inside and outside the concrete during curing, desirable development of the concrete strength, earlier time for removing the internal mold, faster construction speed, better construction efficiency, assurable precast quality of the box girder, and lower costs.

The invention discloses a full-set dismantling and installing construction method of a bridge overpassing an existing line. Full-set dismantling and installing construction is conducted on a plurality of beam segments needing to be dismantled of a used beam to be dismantled from front to back. The full-set dismantling and installing construction method comprises the steps that firstly, a pavement layer of the bridge surface is milled; secondly, roof-propping is conducted on the beam segments; thirdly, preparatory work is conducted before hoisting; fourthly, hoisting and moving-out are conducted; fifthly, one beam segment is installed after replacement; sixthly, full-set dismantling and installing construction of the next beam segment is conducted, specifically, full-set dismantling and installing construction is conducted on the next beam segment needing to be dismantled of the used beam to be dismantled according to the first step to the fifth step of the method; and seventhly, the sixth step is repeated once or more than once till full-set dismantling and installing construction of all the beam segments needing to the dismantled in the used beam to be dismantled is completed. The method is simple in step, reasonable in design, easy and convenient to implement and good in using effect, full-set dismantling and installing construction of the bridge overpassing the existing line can be completed easily, conveniently and rapidly, the construction process is safe and reliable, the construction period is short, and the method is economical and practical.

The invention is about the process to hang the large device by the rotary balance method. It to fix the large device frame off-center to make a fulcrum to balance the frame gravitation and the hoister lifting force. The load of the hoister is much less than the gravitation of the frame, so the hoister can lift large device in the present workshop space. So it can decrease the working time and the cost.

The invention discloses a special sling for the hoisting extra-large structural modules for nuclear power plants, which belongs to the field of mechanical engineering. The special sling comprises a distributor, multiple steel tube beams and multiple connecting nodes, wherein the steel tube beams are connected in pairs by the connecting nodes so as to form balancing beam frames, and the balancing beam frames are respectively connected with the distributor and a hoisting module; and the length of an upper hoist cable can be adjusted according to the position of the center of gravity of a lower hoisting module, so that the distributor is aligned at the center of gravity of the lower hoisting module in the up-and-down direction. According to the special sling, a hydraulic oil cylinder is adopted to be connected with a hanging bracket and hoisted objects, the appearance of the hydraulic oil cylinder is exquisite, the self weight of the hydraulic oil cylinder is reduced, but the hydraulic oil cylinder can bear a large force, and the hydraulic oil cylinder is made of 45# high-quality carbon steel, so that the hydraulic oil cylinder has the characteristics of fatigue resistance, impact resistance, non-magnetism, and the like; and the working temperature of the hydraulic oil cylinder can be minus 60-200 DEG C, so that after running for 6000 hours, the hydraulic oil cylinder with super-long service life has no fault. Therefore, the hanging bracket and the hoisted objects connected simply and conveniently, errors are easy to control, and the service life is long.

The invention discloses a reinforcing mesh sling and a hoisting method for a reinforcing mesh. The reinforcing mesh sling comprises a retainer and multiple hooks used for hooking and hanging the reinforcing mesh, wherein the multiple hooks are arranged in multiple rows and multiple columns and fixed on the retainer, and the opening orientation of the hooks is the same. The reinforcing mesh sling disclosed by the invention is simple in structure, convenient to operate, safe and reliable in hoisting of the reinforcing mesh. The hoisting method for the reinforcing mesh disclosed by the invention is based on a hoisting method of the reinforcing mesh sling disclosed by the invention, therefore, the rapid and safe hoisting of the reinforcing mesh can be achieved.

The invention relates to a steel coil hoisting tool which comprises two parallel hoisting beams and end plates, wherein the end plates are used for connecting the two hoisting beams and are respectively positioned at both ends of the hoisting beams; each hoisting beam is a c-shaped steel with a long slot; the long slots of the two hoisting beams are opposite; two L-shaped hangers are arranged between the two hoisting beams; the L-shaped hangers are mounted between the two hoisting beams through rollers respectively embedded in the long slots of the two hoisting beams; two rollers are coaxial; through holes are respectively formed in the two end plates; push-pull rods in parallel to the hoisting beams are respectively inserted in the through holes; a plurality of latches are uniformly distributed on the push-pull rods in the axial direction; clamping grooves matched with the latches are formed in the inner sides of the through holes; the two push-pull rods are respectively connected with the two L-shaped hangers; handles perpendicular to the push-pull rods are mounted at the end parts outside the push-pull rods. The steel coil hoisting tool has the advantages of simple structure, convenience in use, firm structure, avoidance for damage to a steel coil, improvement on hoisting efficiency and elimination for potential safety hazards.

The invention relates to a structure and a method for integrally a breaking pile head of a pile foundation. The structure comprises the pile foundation, and main ribs of a reinforcement cage and sounding pipes, which are positioned in the pile foundation; main rib sleeves sleeve sections, higher than the top surface of a design pipe body, of the main ribs of the reinforcement cage; a gap is formed between the outer diameter of each main rib and the inner diameter of the corresponding main rib sleeve; a sounding sleeve is arranged on each sounding pipe in a sleeving manner; a separating pipe is arranged at the position of a pile head cutting line by encircling the main ribs of the reinforcement cage; the separating pipe comprises a flexible outer pipe and inner ribs inserted in an inner hole of the flexible outer pipe; after the pile foundation is cast, the inner ribs are pulled out of the separating pipe, separating holes are forming by drilling, separating wedges are inserted into the separating holes, and the pile foundation is knocked to enable the pile head and the top surface of the design pipe body to be separated. The structure and the method have the beneficial effects that the positions of the sounding pipes and the main ribs of the reinforcement cage in the pile foundation are not required to be searched any more, the main ribs are prevented from being damaged in the breaking construction; the pile head after breaking is flat in structure.

The invention discloses a super large curved surface glass curtain wall mechanical installation method. The super large curved surface glass curtain wall mechanical installation method comprises the following steps of construction preparation, suction of the glass through an electronic suction cup, binding of a haulage rope and a basket strap, trial suspending of the glass, setting of glass in place and setting of ladder truck personnel in place, fine tuning of the glass, loosening of the haulage rope and installation of a press block. By utilizing the electronic suction cup to suck the glass, most of the weight of the glass is borne by a crane and the suction cup, the manual work at the carrying place of the glass is reduced, the ladder truck is a novel introduced machine and can conveniently adjust the height and the angle, only operating personnel stands on the ladder truck, the weight of the glass is not borne, the stress of people and materials is divided, and the method is safer and more efficient.

The invention discloses a dedicated sling for a concrete duct piece, which comprises a hand ring. The hand ring is fixed on a mounting plate; one end of a first hoisting and shrinking plate and one end of a second hoisting and shrinking plate are respectively connected to the mounting plate; the other end of the first hoisting and shrinking plate is connected with a first forceps holder; the other end of the second hoisting and shrinking plate is connected with a second forceps; a baffle is arranged inside the vertical tail end of the first forceps holder; a clamp is arranged inside the vertical tail end of the second forceps holder; and the horizontal end of the second forceps holder is arranged in the horizontal end of the first forceps holder in a penetrating manner to axially slide. According to the dedicated sling for the concrete duct piece, the duct piece which is under the horizontally-arranged state can be hoisted, a hoisting process is safe, simple and easy to realize, a great quantity of manpower and hoisting material can be saved, and potential safety hazards are eliminated.

The gurney is for lifting firearms, such as shotguns, rifles, archery bows and hunting equipment to an elevated hunting position. The gurney includes a molded urethane fixture or base member with slots longitudinally aligned along the longitudinal edges thereof. A lifting catch is provided on the rear surface of the fixture near the upper end portion thereof. The catch is centrally located. A pair of Velcro straps are provided which extend through pairs of laterally aligned slots that best fit each firearm. The Velcro straps are wrapped around the firearm and secured. A lifting cord with a snap hook on one end is attached to the lifting catch. The other end of the cord is attached to a tree limb or elevated platform or tree stand in a clear area and secured at a predetermined height that will prevents the firearm, archery bow or equipment from hitting the ground. Once the hook is attached to the catch on the fixture, the firearm, archery bow or equipment is ready to be safely hoisted.

The invention discloses a crossing existing line bridge girder dismounting method. A dismounted bridge girder is a girder crossing an existing railway line and is formed by splicing a plurality of girder segments to be dismounted from front to back. During complete set dismounting construction of any segment to be dismounted, the process comprises the following steps that firstly, a bridge deck pavement is milled, specifically, the bridge deck pavement of the girder segment constructed currently is milled; secondly, the girder segment is jacked up, specifically, the girder segment constructed currently is horizontally jacked upwards through a vertical jacking device, so that the girder segment constructed currently is separated from two supporting piers; thirdly, preparation operation before hoisting is conducted; and fourthly, the girder segment constructed currently is horizontally hoisted upwards through a bridge girder erection machine and moved to the outer sides of the two supporting piers. The method is simple in step, reasonable in design, easy and convenient to construct and good in application effect, the complete set dismounting construction process of the crossing existing line bridge girder can be completed easily, conveniently and rapidly, and the construction process is safe and reliable, the construction period is short, and the method is economic and practical.

The invention discloses a jib-type crane pulley device which comprises a pulley and a pulley shaft. The pulley comprises a rim with a U-shaped rope groove, a hub, a spoke and a swinging mechanism, wherein the spoke is connected with the rim and the hub, the swinging mechanism comprises an inner ball, a steel ring and a positioning sleeve, the inner ball is sleeved in an inner ring of the steel ring, the ball center of the inner ball is superposed on the circle center of the steel ring which is fixedly connected with the hub by the positioning sleeve, and the inner ball is provided with a pulley shaft hole matched with the pulley shaft which penetrates through the pulley shaft hole of the inner ball of the swinging mechanism and is in rotating connection with the inner ball. When the jib-type crane pulley device is in use, the pulley can wholly swing along with the inclination direction of a hoisted object to constantly keep a force position kept in the center of the pulley so that the rope groove can not be deformed due to unbalanced force, a steel wire is prevented from jumping to cause danger, the deformation of the pulley is effectively lessened in the use process, and the pulley has prolonged service life and is safe to hoist.

The invention discloses a generator rotor hoisting air gap monitoring and protecting device. The device comprises a protecting device for collision sensing feedback of a rotor; a monitoring communication module which is used for receiving and processing feedback information of the protection device and sending an instruction to a report warning module; the report warning module which is used for receiving an instruction of the monitoring communication module and giving an alarm; a distance measuring module which is used for measuring a distance between the rotor and the bottom of the pit; a feedback display module which is used for receiving and processing feedback information and simulating and displaying the hoisting process and state of the rotor through a 3D graph; and a power supply guarantee module used for providing power. The protection device achieves protection and monitoring in a limited gap between a rotor and a stator, through cooperation of all modules, the number of used workers is greatly reduced, equipment protection is simple, safe and effective, hoisting monitoring covers all parts without hidden danger, equipment extrusion and collision alarm is timely, normal position operation is visual and visual, the hoisting process is synchronously displayed, and the walking bottom of the hoisting part can be monitored; safety of personnel and equipment is ensured, and hoisting is simple and quick.

The invention discloses a system for hoisting the steel lining module of a nuclear power station. The system comprises an upper hoisting cable tool system, a truss hoisting tool and a lower hoisting cable tool system; in the upper hoisting cable tool system, an adjustable length connection way formed by a main steel wire rope, a flat shackle, a connecting pulling plate and an adjustable pulling rod is adopted between the truss hoisting tool and a hoisting machine hoisting hook; and in the lower hoisting cable tool system, a space-adjustable flexible connection way formed by a turnbuckle, a steel wire rope ring, a circular ring plate, an upper shackle and a lower shackle is adopted between the truss hoisting tool and a module hoisting point. The system guarantees structure stability and hoisting process safety during the hoisting of the steel lining module, working at heights during the construction of a containment steel lining of the nuclear power station is reduced, the intersection of time and space during the construction with concrete is reduced, the construction cycle of the nuclear power station is shortened, and the economic benefit is improved; and moreover, convenient and fast construction of hoisting tools for hoisting during the hoisting of the steel lining module is facilitated.

The invention relates to a rail type traction system for hoisting transportation. The system comprises a rail and is characterized in that a traction tool car is arranged on the rail, the traction tool car comprises a base and a steel wheel set located at the lower portion of the base, the steel wheel set is arranged on the rail, and the system has the characteristics that a supporting stand column is arranged on the base, a fixed cross beam is arranged on the upper portion of the supporting stand column, a jacking cross beam is arranged in the middle of the supporting stand column, the jacking cross beam is connected with a jacking device and driven by the jacking device to do lifting motion, a connecting structure is arranged on the jacking cross beam and used for being connected with aconveyed object, an adjustable fixing support and an adjustable pulley support are arranged at the bottom of the base, the adjustable fixing support is used for supporting the traction tool car when the traction tool car stops, and the adjustable pulley support is used for supporting the traction tool car when the traction tool car moves. The traction system can meet the working condition requirements of transverse movement, vertical hoisting transportation and the like, the influence of limiting the system by a working site is small, a rail system is suitable for various site environments, and the hoisting method is safe, reliable, stable, feasible and advanced in technology.

A device to be removably attached to a rifle or weapon to safely hoist and lower the weapon to and from an elevated stand. The device has a pair of legs which, together with the butt of the weapon, form a tripod to support the weapon while it is on the ground. A method for using the device.

The invention discloses a prefabricated bearing platform form and a mounting method thereof. The prefabricated bearing platform form comprises a plurality of plate bodies which are in sequential matched end-to-end connection, wherein upper concave tongue-and-groove openings or lower concave tongue-and-groove openings are formed in two sides of the plate bodies, and the upper concave tongue-and-groove openings and the lower concave tongue-and-groove openings are matched with each other; and when the plate bodies are in matched connection with the adjacent plate bodies, the upper concave tongue-and-groove openings in the plate bodies are spliced with the lower concave tongue-and-groove openings of the adjacent plate bodies. The mounting method of the prefabricated bearing platform form comprises the following steps: pouring of a bedding layer of a bearing platform; lofting of the bearing platform; hoisting and splicing of the plate bodies; axis location; elevation review, back-filling treatment; and pouring of the bearing platform after back-filling and compacting. The prefabricated bearing platform form replaces a brick membrane, shortens the foundation construction period, can effectively save the labor force and raw materials particularly for foundations with tight schedules and poor foundation soil qualities, decreases cost and increases benefits, and has good economic benefits and social benefits.

The invention discloses a lateral coil feeding device for a cable former. The lateral coil feeding device comprises a cement face, a cable former body and a coil feeding mechanism. The cement face isprovided with a first groove and a second groove. The coil feeding mechanism is arranged in the second groove and comprises a coil feeding framework, a moving frame, a triangle fixing frame, a first air cylinder piston rod, a fixing base, an L-shaped rack, a wire coil and a second air cylinder piston rod. A hollow portion is arranged on the coil feeding framework. One end of the second air cylinder piston rod is fixedly connected with the coil feeding framework. The other end of the second air cylinder piston rod is fixedly connected with the moving frame. According to the lateral coil feedingdevice, by means of the first air cylinder piston rod, the L-shaped rack can be driven to rotate on the fixing base, thus the wire coil is driven to rotate by 90 degrees, by arranging the second aircylinder piston rod, the moving frame can be pushed to slide horizontally, the wire coil reaches the designed position to be installed manually, manual installing is convenient, use is convenient, andhoisting is safer compared with a traditional technology.

The invention discloses a novel supporting device for a gas drilling sand draining pipe. The novel supporting device comprises an upper pressing sleeve (6), a lower supporting sleeve (7), a supporting base (8) and a height adjusting sleeve (11). A plurality of through holes I (13) penetrating through the supporting base (8) are formed in the cylindrical surface of the supporting base (8) in the length direction of the supporting base (8). A plurality of through holes II (15) penetrating through the height adjusting sleeve (11) are formed in the cylindrical surface of the height adjusting sleeve (11) in the length direction of the height adjusting sleeve (11). The height adjusting sleeve (11) is fixed into a cavity (12) through a height fixing pin (10) which penetrates through any through hole I (13) and the corresponding through hole II (15). The upper pressing sleeve (6) is fixed to the lower supporting sleeve (7) through connecting bolts (19). The bottom of the lower supporting sleeve (7) is further provided with a single-hole hinge support (17). The novel supporting device has the advantages that the mounting difficulty is lowered, the construction time is shortened, the suspension stability is improved, and safety and reliability are achieved.