45results about How to "Reduce the risk of falling from heights" patented technology

The invention discloses a novel telescopic type tong-type ammeter. The tong-type ammeter comprises a shell and an insulation telescopic rod fixedly connected with the bottom of the shell, a data display instrument is arranged at the bottom of the telescopic rod, the data display instrument is connected with a straight-through current transformer in the shell through a connecting wire inside the telescopic rod, the shell is a closed annular body composed of a fixed shell body and a rotating shell body hinged to the fixed shell body, the fixed shell body is fixedly connected with the telescopic rod, a fixed coil is fixedly arranged on the inner wall of the fixed shell body, a rotating coil is fixedly arranged on the rotating shell body, and under the normal state, a closed annular coil is composed of the fixed coil and the rotating coil. The novel telescopic type tong-type ammeter is suitable for measuring load currents on the low-voltage side and a branch circuit of a transformer of a distribution transformation table area, and is safe, efficient and convenient to use.

The invention discloses a petroleum drilling machine tower-shaped derrick sleeving mounting method. The method includes the steps that 1, a crown block and crown block frame is suspended to a wheeled flat car to be transported to a wellhead center line; 2, fine adjustment is conducted till the centers of ear plate holes of a left longitudinal girder and a right longitudinal girder and the centers of ear plate holes in the crown block and crown block frame are aligned with one another, fixedly connected and move upwards, meanwhile the wheeled flat car is moved to the right side of the wellhead center line, and a derrick upper segment is mounted; 3, the wheeled flat car is moved to the wellhead center line, a beam moves downwards along a left guide stand column and a right guide stand column, and connection lugs between the crown block and crown block frame and the derrick upper segment are connected; 4, fine adjustment is conducted on the beam, the left longitudinal girder and the right longitudinal girder till the centers of the ear plate holes in the left longitudinal girders and the right longitudinal girders and the centers of the ear plate holes in the lower end of the derrick upper segment are aligned with one another, fixedly connected and move upwards, meanwhile the wheeled flat car is moved to the right side of the wellhead center line, and a second derrick segment is mounted; 5, the above steps are repeated till all the other segments of the derrick are installed. According to the method, the derrick is assembled at a low position in a segmented mode, the derrick is gradually lifted after the segments are arranged in a sleeving mode, and the derrick is installed.

The invention discloses an efficient power cable conveying device which comprises a bottom plate. A rotating block is fixed to the lower end of the bottom plate. A balance weight is fixed to one sideof the lower end of the bottom plate. The lower end of the rotating block is rotationally connected with a bearing plate. The two sides of the lower end of the bearing plate are rotationally connectedwith rotary shafts. Walking wheels are mounted at the two ends of each of the two rotary shafts. Lifting devices are fixed to the side walls of the two ends of the bearing plate. Two parallel secondsliding grooves are formed in one side of the upper end of the bottom plate. According to the efficient power cable conveying device, through cooperation of oil cylinders and U-shaped arms, cables areerected in the high altitude, and the problem that workers frequently climb up and down is solved; through a conveying device and a rotating device, the problem about efficient continuous cable conveying in the high altitude is solved, efficient conveying is achieved, and meanwhile cable efficient recovery is achieved; and the work efficiency is improved, the manpower cost is saved, the labor intensity is reduced, and the danger that high-altitude falling happens during high-altitude work is indirectly reduced.

The invention discloses an automatic coating system for a bridge, and a construction method thereof. The automatic coating system for the bridge comprises a transport vehicle, an air compression system, a material holding system, a control system, a lifting system, a rail system and a spraying system, wherein the transport vehicle is used for movement of the automatic coating system for the bridge; the air compression system is connected with the material holding system through a gas supply pipeline, and the material holding system is connected with the spraying system through a material supply pipeline; the air compression system sprays a coating material in the material holding system onto a wall surface through the spraying system and via compressed air; and the rail system is fixedly arranged at the top end of the lifting system and the height of the rail system is adjusted through the lifting system, and the rail system is arranged in a manner of vertically facing the wall surfaceso that the spraying system arranged on the rail system vertically moves along the rail system. The automatic coating system for the bridge has the advantages of being high in maneuverability and automation degree, large in working height, high in applicability, and the like, and can be widely applied to the field of bridge construction.

The invention discloses a mounting method for prefabricated parts based on a strong light laser positioning technology and relates to the technical field of prefabricated construction. The mounting method for the prefabricated parts based on the strong light laser positioning technology comprises a tower crane, a strong laser instrument, bolt sleeves, a prefabricated part, embedded bars and a cast-in-situ concrete slab. The mounting method comprises the following specific operations: S1, producing a base, and fixing the strong laser instrument on the base; S2, selecting the bolt sleeves and fixing the base in the bolt sleeves through bolts; and S3, embedding the bolt sleeves in the prefabricated part. According to the mounting method for the prefabricated parts based on the strong light laser positioning technology, the strong laser instrument is arranged and fixed on the prefabricated part, and the prefabricated part is positioned needing to be mounted is positioned by adopting laseremitted by the strong light laser instrument instead of manual positioning, so that the probability of high falling potential hazard of constructors is reduced; and meanwhile, the construction speed is promoted to be greatly increased and the positioning is more accurate.

The invention discloses an automatic crawling spraying machine and a spraying method thereof. The automatic crawling spraying machine comprises a climbing system, an adsorption system and a spraying system, wherein the adsorption system and the spraying system are both arranged on the climbing system; the climbing system is composed of an upper climbing frame, a lower climbing frame and a pushing assembly; and the upper climbing frame and the lower climbing frame are connected through the pushing assembly and can be pushed. The automatic crawling spraying machine can be suitable for all bridge concrete faces and is wide in application range.

The invention discloses a safety protection device for preventing a high-altitude climbing pole from falling off. The safety protection device comprises a waist tightening belt, wherein an electromagnet is fixed in the waist tightening belt, the electromagnet is connected with a pressing switch arranged on a glove through a wire, the pressing switch is arranged at the palm position of the glove, and the electromagnet is in a power-off state when the pressing switch is pressed down. The invention further provides a protection method based on the safety protection device. The safety protection device for preventing the high-altitude climbing pole from falling off is simple in structure, the electromagnet arranged on the waist tightening belt is used for effectively achieving the safety protection effect, and the risk that an operator falls off from a high altitude in the electric power overhaul process can be reduced.

The invention relates to a method of entering a strong electric field along an ultrahigh-voltage tension insulator string and a pedal device used thereby. Equal-potential electrician's feet are each equipped with a pedal device, a clamping mechanism of the pedal devices clamps an insulator steel cap, the electrician enters a strong electric field along a tension insulator string in an upright manner, and the feet move forward alternately along the tension insulator string to reach a work position. The pedal device comprises a clamping mechanism, a mechanism for supporting and fixing foot soles, and a mechanism for pressing or lifting the feet to make the clamping mechanism clamp or release an insulator steel cap. Workers can almost enter an electric field in an upright manner, so that the physical power consumption of workers is reduced. Compared with a method of entering a strong electric field in a sitting or squatting manner, workers feel more comfortable and convenient, the labor intensity is reduced greatly, and workers have enough physical power to complete follow-up charged operation work.

The invention discloses a double-locking full-time protection safety device which comprises an outer shell, a safety sleeve body, rotating shaft pins, fixing rods, locking pin rings and a safety belt sleeve. The safety sleeve body comprises an upper plate face and a lower plate face which are integrally formed, and a pair of locking pin openings is formed in the connection face of the upper plate face and the lower plate face; a sliding block groove is formed in the upper plate face, and two locating grooves are formed in the lower plate face. A swing arm movably connected with the rotating shaft pins is arranged at the upper end of the upper plate face, and a support is movably connected to the swing arm and fixedly connected with the upper plate face through threaded holes; the safety sleeve body is provided with a pair of locking sheets connected through a spring. By means of the double-locking full-time protection safety device, the technical problem of potential safety hazards can happen during high-altitude moving operation through an existing safety belt is solved, and the double-locking full-time protection safety device has the advantages of being convenient to carry, safe and reliable.

The invention discloses a shell of an LED lighting device, the shell is made of magnesium alloy comprising the following compositions in percentage by mass: 1.6 to 10 percent of aluminum, 0.3 to 3.5 percent of zinc, 0.1 to 0.5 percent of manganese, less than and equal to 0.3 percent of silicon, less than and equal to 0.03 percent of iron, less than and equal to 0.25 percent of copper, less than and equal to 0.01 percent of nickel, less than and equal to 0.3 percent of the total amount of other elements or less than and equal to 0.01 percent of single amount of other elements, the other elements refer to rhenium, zirconium, silver, yttrium and lithium, the balance being magnesium.

The invention relates to a safety protection device for the hole digging process of a manual hole digging pile, in particular to an all-around protection operating platform for hole digging operationof the manual hole digging pile. The all-around protection operating platform comprises an operating platform body arranged at the porthole of the manual hole digging pile, and a pail channel is arranged in the middle part of the operating platform body. The operating platform body comprises a support frame, and a protective screen plate is arranged at the support frame. A plurality of mounting plates are arranged around the support frame, and a mounting through hole is formed in any one mounting plate. The all-around protection operating platform can protect operating personnel in the hole digging process of the manual hole digging pile well.