207 results about "Construction worker" patented technology

The invention provides a control method of an intelligent tension system and the intelligent tension system. The method is characterized by including the steps that a loading speed control unit is built and used for detecting pressure of an oil inlet, and the pressure, monitored in real time, of the oil inlet is compared with preset pretightening force of each stage; a prestressing tendon extending amount control unit is built and used for detecting the displacement value of a prestressed steel bar in real time in the tensioning process and the displacement value of the prestressed steel bar in set holdup time after the prestressed steel bar reaches set tension force of each stage; tensioning values of different jacks are compared after first-stage tension; control signals of different stage conditions in the tensioning process are converted into electromagnetic motions and frequency converter rotation speed control requirements; according to signals fed back by a pressure sensor and a displacement sensor in the tensioning process, the related control commands undergo fuzzy conditioning. The control method and the system have the advantages of improving data measuring precision and construction efficiency, reducing labor intensity of construction workers, reducing cost, improving labor efficiency, eliminating safety hidden risks of the construction workers, and enabling the whole tensioning process to be finished at a time.

The invention belongs to the technical field of RTLS real-time monitoring, and provides a method and system for monitoring construction intrusion of a railway station yard. The method comprises the following steps of (1), acquiring location information of each electronic tag through an electronic reader-writer, and sending the location information to a management server; (2), calculating the distance Si between each electronic tag and a dangerous area through the management server; (3), judging whether or not Si is smaller than a preset safe distance S0, and if yes, conducting the step (4); otherwise, conducting the step (5); (4), raising the alarm through an warner, wherein a camera which falls into a preset range of the corresponding electronic tag turns to the corresponding electronic tag, and sends information of the alarm to an intelligent terminal which the corresponding electronic tag is bound to, and then returning to the step (3); (5), judging whether or not the alarm is started through the warner, if yes, canceling the alarm, and returning to the step (1); if not, returning to the step (1). According to the method and system for monitoring construction intrusion of a railway station yard, position monitoring of on-site construction workers, transportation vehicles, machinery and equipment and travelling tracks of a railway line can be achieved, the alarm is raised when intrusion behavior exists, and the safety distance between each entity and the dangerous area is guaranteed, so that the occurrence of collision accidents is reduced.

The invention discloses a strong adhesive. According to the invention, a high-molecular synthesized latex with high adhesion, a special hydraulic coagulant powder and a plurality of auxiliary agents are prepared according to a scientific and reasonable formula, such that strong adhesive is obtained. The strong adhesive is advantaged in simple construction technology, high adhesive performance with media such as cement mortar, concrete, stones, and ceramic materials, fast adhesion and solidification, small linear shrinkage, fire retardance, and no sagging when applied vertically. When the strong adhesive is contacted for a long time, the skin of a construction worker is not harmed. The strong adhesive provides substantial effects in reducing the shipped weight of ship materials, improving construction performances, and protecting the health of construction workers. The strong adhesive is suitable to be used in pavements of ceramic decorative materials in damp cabins such as kitchens, catering rooms and toilets in ship superstructures. The strong adhesive is also suitable for civil buildings.

The invention discloses a power cable pay-off device, comprising a frame, a first support rack, a second support rack, a third support rack, a cable drum, a tensioning wheel set, a wire passing shaftand a walking wheel; the first support rack, the second support rack and the third support rack are orderly fixed on the frame; the cable drum is connected onto the first support rack in a rotating manner through a rotating shaft, the tensioning wheel set is connected onto the second support rack in a rotating manner, the wire passing shaft is connected to the third support rack in a rotating manner, and the walking wheel is arranged below the frame; the third support rack includes a supporting plate fixed on the frame, two side plates fixed on the supporting board, a central shaft fixedly connected between the two side plates, sensor probes arranged inside the side plates, and a counter disposed on the frame and connected with the sensor probes. The power cable pay-off device is characterized by simple structure, convenient operation and reliable operation; the power cable pay-off device can be widely applied in power cable laying operation, cable pay-off construction can be greatly facilitated, construction efficiency can be effectively improved, and labor intensity of construction workers can be lowered.

The invention belongs to the technical field of high-temperature gas-cooled reactor control rod system overhaul, and particularly relates to a high-temperature reactor control rod system overhaul device and technology based on ergonomics. The device comprises an atmosphere isolation main cabin, a transition cabin, an overhaul platform and an aisle, wherein the atmosphere isolation main cabin and the transition cabin are controlled to be communicated or isolated by a door II which can be automatically opened and closed; the upper end of the atmosphere isolation main cabin is fixed on the transition cabin, and the lower end is tightly held and sealed with a shielding seal barrel of a control rod drive mechanism through a seal ring; the transition cabin is supported and fixed on an upper sealhead of a pressure vessel by support legs; the overhaul platform is fixed on the supporting legs, and the aisle provides access for construction workers from the 28m platform to the transition cabin.In the overhaul process, the device and the technology not only ensure that atmosphere in the pressure vessel does not leak out, but also ensure that the construction workers do not directly enter orleave the helium environment.

The invention relates to a steel bar part welding and positioning device for building construction so as to solve the problems that in the welding process of steel bar electroslag pressure welding, a device is frequently disassembled, different-diameter steel bars are not coaxial after being installed and clamped, and the quality problem after steel bar welding is caused by operation of building workers during pressurizing and upsetting. The steel bar part welding and positioning device comprises a fixing rod with the axis vertically arranged, a first arc-shaped frame and a second arc-shaped frame are connected to the fixing rod, a first centering and clamping mechanism, a welding distance adjusting mechanism and a control system are arranged on the first arc-shaped frame, a second centering and clamping mechanism is arranged on the second arc-shaped frame, and a conductive agent box opening and closing mechanism is arranged on the fixing rod. By adjusting the welding distance adjusting mechanism, the problem that the welding distances of steel bars with different diameters are different is solved, a motor rotating speed switch is adjusted, the pressurizing and upsetting time of the steel bars with different diameters is adjusted, and in the pressurizing and upsetting process, the steel bar welding quality problem caused by the operation problem of workers is effectively avoided.

The invention discloses a method for draining accumulated floor water during super high-rise building construction, and an apparatus thereof. The method comprises the following steps: building a water pool at the mouth of a construction water feeding pipe of each of floors, arranging a water draining standpipe connected with a water pool on a lower layer floor at the bottom of the water pool, and draining water leaked by the feeding pipes to a bottom waterway through the water drainage ditch layer by layer; setting a group of floor drain at the edges of floor slabs of each of the floor in an interval manner, connecting the floor drain with a water draining flat pipe below the floor slab, and connecting the water draining flat pipe with the water draining standpipe; and draining accumulated water in the construction process or rainwater to the bottom water drainage ditch through the floor drain layer by layer. Accumulated water generated by the floor during the super high-rise building construction or generated due to rain fall can be timely and orderly discharged from a construction site through the method and the apparatus without overturning the accumulated water out of the floor by directly utilizing a trolley through manpower drainage. The method and the apparatus have no influences on below construction workers, passing pedestrians and passing vehicles, are in favor of the onsite civilized construction, and can reduce the drainage cost.

The invention relates to welding equipment, in particular to concrete reinforcement frame welding equipment. The concrete reinforcement frame welding equipment can relieve the labor intensity of building workers. The concrete reinforcement frame welding equipment comprises a bottom plate, and the two sides of the top of the bottom plate are in bolt connection with guide rods, first supporting plates and second supporting plates correspondingly; the guide rods are located between the first supporting plates on the two sides and the second supporting plates on the two sides; and the first supporting plates and the second supporting plates are fixedly connected. According to the concrete reinforcement frame welding equipment, rebars can be automatically moved through a moving assembly and welded through a spot welding assembly, manual operation is reduced, and accordingly, the labor intensity of the building workers can be relieved; and a wedge-shaped rod can be pushed to move downwards through a special-shaped rod, ratchets are not stuck by the wedge-shaped rod any more, thus, the building workers do not need to manually pull the wedge-shaped rod downwards, and the operation difficulty is lowered.

A three-component, protective headgear or helmet is provided with a battery-powered LED head lamp, which may be used by construction workers, search and rescue persons, cyclists, police, fireman, and the like. The battery may be replaceable or rechargeable and has long-term, uniform output characteristics driven by unique circuitry.

The invention discloses a concrete mixing process which comprises the following steps: preparing equipment of selecting a parking position of a transportation bottom frame according to a concrete pouring position, mounting an uniform-speed loading mechanism to a charge end of a mixing stirring barrel, carrying a water storage tank beside the transportation bottom frame, connecting each pipeline tothe outer side of the water storage tank, and erecting a concrete transportation pipeline at the tail end of a water discharge box. Dust generated while a cement bag hits against a conveying frame iscollected by a collecting inclined box, dust generated in a cement bag opening and pouring process is collected by a collecting flat box, and dust-containing gas flow is introduced to a position below a liquid surface in the water storage tank through a gas exhausting tube and a gas guide tube; a water body in the water storage tank blocks dust inside the water storage tank, so that dust generated in a cement adding process is prevented from diffusing into surrounding air or being breathed in by a building worker, and therefore, environment friendliness of a concrete mixing device is improved.

The invention discloses an assembly type steel bar framework rapid forming lap joint structure. The structure comprises a lap joint structure body, external lap joint plates, middle lap joint frames,steel bars, a rotary shaft and locking knobs. The external lap joint plates are arranged at the upper and lower ends of the lap joint structure body, the middle lap joint frames are distributed between the two external lap joint plates at equal intervals, and the steel bars are inserted in the external lap joint plates and the middle lap joint frames. First adjusting frames are inserted in first adjusting grooves, abutting grooves are formed in the upper end faces of the first adjusting frames, the locking knobs are in threaded connection with the upper end of a first supporting frame and theupper end of a second supporting frame, and the inner ends of the locking knobs are connected with the abutting grooves. The assembly type steel bar framework rapid forming lap joint structure can quickly fix the steel bars by designing a steel bar fixing structure according to the lap joint characteristic of a reinforcement cage framework, the binding size of the reinforcement cage framework canbe adjusted, and great convenience is brought to rapid binding of a reinforcement cage for building workers.

The invention discloses a material transportation cart used for building construction. The material transportation cart comprises a supporting mechanism, a regulation mechanism, a storage mechanism and a drive mechanism. The regulation mechanism is installed on the supporting mechanism. The storage mechanism is installed on the regulation mechanism. The drive mechanism is installed on the storagemechanism. The supporting mechanism comprises a bottom plate. Rolling wheels are installed at the positions of the four corners of the bottom of the bottom plate correspondingly. A push plate is installed on the right side of the bottom plate. The regulation mechanism comprises a fixed plate and an electric push rod. According to the material transportation cart, through cooperation of the fixed plate, the electric push rod, a fixed shaft, a top plate, a concave shell, a connection plate, a cylinder, a scraper, a movable plate and a baffle, the material transportation cart used for building construction is obtained; when materials are transported to the destination, it is avoided that unloading needs to be manually conducted; during unloading, the situation that due to the fact that dead corners appear in a hopper, cleaning needs to be manually conducted is avoided; and the work efficiency of building workers is greatly improved, labor burdens on the workers are relieved, and great convenience is brought to users.

The invention relates to the technical field of building machinery, in particular to a grinding cutter head and a grinding machine. The grinding cutter head comprises a cutter head body, a polishing blade, first grinding slices and second grinding slices; a plurality of sawtooth-shaped bulges are arranged on the edge of the cutter head body along the circumferential direction of the cutter head body at intervals; the polishing blade is arranged at one ends, away from the cutter head body, of the sawtooth-shaped bulges and extends out relative to the sawtooth-shaped bulges; the plurality of first grinding slices are arranged on the first surface of the cutter head body along the circumferential direction of the cutter head body; the plurality of second grinding slices are arranged on the second surface of the cutter head body along the circumferential direction of the cutter head body; and the height of the second grinding slices is larger than the height of the grinding blade. According to the grinding cutter head and the grinding machine, large faulting of slab ends and explosion points can be rapidly and effectively removed, the labor intensity of building workers is reduced, andthe grinding efficiency is improved.

The invention discloses a building labor worker credit evaluation method. The method comprises the following steps: evaluating and scoring the performance of an evaluation object in a construction project to obtain project evaluation scoring results; verifying the project evaluation scoring results; calculating all the evaluation scoring results of the evaluation object to obtain a final credit evaluation score; and updating the credit rating of the evaluation object according to the final credit evaluation score. The invention further provides a building labor worker credit evaluation system.According to the invention, the performance of mobile construction workers entering each construction project in the project is evaluated and scored; by introducing evaluation of three dimensions of'cooperation honesty', 'construction skills' and 'safety production', comprehensiveness of credit evaluation of the construction workers in the construction project is ensured, the credit rating of the mobile construction workers is updated according to the final credit evaluation score, and selection of the mobile construction workers by the later project is facilitated.