Атты III халықаралық ғылыми-тәжірибелік конференция жинағЫ
"SCIENCE AND EDUCATION IN THE MODERN WORLD
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- "SCIENCE AND EDUCATION IN THE MODERN WORLD: CHALLENGES OF THE XXI CENTURY" NUR-SULTAN, KAZAKHSTAN, JULY 2019
| "SCIENCE AND EDUCATION IN THE MODERN WORLD:
CHALLENGES OF THE XXI CENTURY" NUR-SULTAN, KAZAKHSTAN, JULY 2019 9 Figure 1 – the Technological scheme of the device of precast coatings 1 – on-Board car; 2 – self-propelled crawler crane; 3 – plates; 4 – grader; 5 – tubular template; 6 –car with a load for rolling plates; 7 – electric welding unit; 8 – filler seams sand-cement mortar; 9 – compressor; 10 – primer; 11 – filler seams bitumen-polymer mastic One of the disadvantages of the traditional technology of construction of precast coatings is the lack of special high-performance machines for laying slabs. As such a machine, a promising design is proposed, presented in figure 2. Figure 2 – Machine for stacking plates with the vacuum lifting devices 1 – Ural 4320-4972-82M: 2 – crane-manipulator unit with vacuum load gripping device; 3 – platform As the basic machine 1 acts all-terrain vehicle Ural 4320-4972-82M, carrying capacity 12500 kg, on which the platform is installed, length 6000 mm and width 2500 mm. For lifting and lowering the plates used crane-manipulator installation 2 KMU IM-180. Instead of the existing system of cargo gripping (hook and slings), a vacuum cargo gripping device is used, which has a number of advantages, such as: the speed of capture and release of the cargo; a rigid connection of the capture with the cargo, which makes it easy to position it in space [5]. "SCIENCE AND EDUCATION IN THE MODERN WORLD: CHALLENGES OF THE XXI CENTURY" NUR-SULTAN, KAZAKHSTAN, JULY 2019 10 Figure 3 – Vacuum pump handling device 1 – elastic platform; 2 – vacuum cavity; 3 – capture body; 4 – intermediate capacity; 5 – vacuum pump; 6 – capture control valve; 7 – ring; 8 – sling branches; 9 – plate The General scheme of the vacuum load gripping device (VSU) is shown in figure 3. VSU is fixed to CMU by means of a ring 7 and a sling 8. The principle of operation of the VSU is as follows: the Capture is lowered to the plate 9, then with the help of the pump 5 from the vacuum cavity 2, the air is pumped out, the control valve of the capture 6 is in the closed state. Due to the pumping of air in the vacuum cavity, a negative pressure is created, and therefore between the capture and the plate there is a force of attraction. Then plate up, laid on a sand base, open the valve control engagement, resulting in the cavity of the vacuum air enters the stove is exempt from seizure. Figure 4 shows the flow diagram of the precast coating device using a specialized set of machines (SCM) with the proposed machine for laying plates. Figure 4 – Technological scheme of the device of precast coatings with the use of machines for laying slabs 1 – motor grader; 2 – tubular pattern; 3 – machine for stacking plates with the vacuum lifting device; 4 – the car with a load for pressing of plates; 5 - welding unit; 6 - pourer stitches mixes mortar; 7 – vehicle; 8 – compressor; 9 – gruntovik; 10 – pourer of seams of bitumen-polymer mastic The scheme shows that the use of this machine in the construction of prefabricated coatings will reduce the number of processes (transportation and laying of plates will be carried |