Safety technology in the construction of the hotte

Safety technology of masonry engineering construction

the masonry engineering referred to here is a broad concept. It includes masonry engineering, roofing engineering and decoration engineering

masonry engineering is the concentration of human, material and man hour consumption in building construction. For the safety of masonry and decoration works, the protection of work at heights should be the core. Secondly, attention should be paid to fire prevention, poison prevention and scalding prevention in roof engineering. At the same time, the safe operation of mortar mixing machinery can not be ignored

masonry engineering construction is composed of several construction processes, such as sand paddle preparation, scaffold erection and masonry

for the safety protection of scaffold, please refer to Chapter 5

most masonry construction operations are in the stage of structural engineering, and most of them are high-altitude and grade separation operations, so safety production is particularly important

(I) sand paddle and brick material preparation

1. machinery and use

sand paddle preparation of brick and stone engineering, mostly using mortar mixer or concrete mixer

sand paddle mixer is a special machine used to stir all kinds of mortar and mortar. The commonly used specifications are 200L and 325l. According to its production status, it can be divided into periodic action type and continuous action type; According to its installation mode, it can be divided into fixed type and mobile type

the concrete mixer can also mix mortar, and the commonly used specifications are 250, 400 and 500L. According to the continuity of the production process, it can be divided into two categories: periodic (3) host 1 must be grounded and forced

the safety requirements for the use and maintenance of mortar mixer and concrete mixer are as follows:

(1) the place where the machine is installed should be flat. I don't know from which aspects to judge the performance of the machine. The machine should be installed smoothly and firmly. (2) All types of mixers (except the reverse discharge mixer) are one-way rotating for mixing, so when connecting the power supply, it should be noted that the rotation of the mixing drum should conform to the direction of the arrow on the mixing drum

(3) before starting the machine, check whether the insulation and grounding of electrical equipment are good and whether the belt pulley protective cover is complete

(4) when working, the machine should be started first, and then mixed after the machine operates normally. Add water while adding material. In case of Midway shutdown or power failure, the material should be unloaded immediately; It is not allowed to start with heavy load after stopping halfway

(5) when feeding the sand paddle mixer, it is not allowed to step on it or use shovel and stick to pull down and scrape the mixing cylinder mouth. The tools cannot collide with the mixing. The overweight expansion of the international material giant will pose a certain impact on the domestic high-end cathode material market, and it is not allowed to stretch the tools into the hopper to scrape the slurry when rotating. No one is allowed to stand under the upper hopper of the mixer. When the bucket is lifted and stopped, the safety hook must be hung

(6) during normal temperature construction, the machinery should be placed in the rain proof shed and the machinery should be placed in the high temperature shed

(7) the non control software can automatically obtain the experimental data of elastic modulus, static bending strength, internal bonding strength, surface bonding strength, bonding strength, etc. the driver is strictly prohibited to start the machine

2. Horizontal and vertical transportation of materials

(1) when transporting bricks and stones and other materials to the trench, it is strictly forbidden to throw them more than 1.5m deep, and chute should be set to send them down. When unloading, the personnel below should be notified to avoid

(2) when loading, check whether the scaffold erection and springboard laying are firm. The spacing of small cross bars and protective and anti-skid facilities must meet the requirements of erection procedures. All carts shall be used to transport materials. It is strictly forbidden to pull the cart backwards and dump it; The distance before and after driving on the ramp shall not be less than 10m. Parallel and overtaking are strictly prohibited

(3) when transporting materials to the shelf, the height of each square meter shall not exceed 270Kg, and the height of the brick stack in a single row shall not exceed four yards. Bricks are not allowed to be placed before the ash trough and water poke