Cement combination box for cultivation of Gastrodia elata

The box is completely composed of cement board, and the volume of the cavity is required to be 60 cm long, 40 cm wide and 32 cm high. Each box is composed of five plates, of which two horizontal sides are 60 cm long, 32 cm wide and 2 cm thick, two plugs are 45 cm long, 32 cm wide and 2 cm thick, and a bottom plate is 65 cm long, 45 cm wide and 3 cm-5 cm thick. The plate and the plate are connected by a connecting ring, which is interlaced with canine teeth, and a pin stick is inserted into the ring.

1. Backplane. The load bearing of the open box body is mainly the bottom plate, so the bottom plate should be thicker than other components, which is composed of a plate body of 3 cm thick, plus three reinforced ribs 5 cm thick, and 8 round holes with a diameter of 2 cm are evenly distributed on the bottom plate for drainage and ventilation. In the middle of the bottom plate, the No. 8 iron wire is used to form a square grid, while the reinforcement ribs are pre-buried with steel bars of 6 cm in diameter to form a steel mesh, so that the bottom plate has enough prestress during load-bearing. The three reinforced ribs can be mixed with a certain proportion of stone chips to make them have enough load-bearing capacity. On the other hand, cement can be used to add a certain proportion of coarse sand.

2. Horizontal gang. The two transverse sides are completely composed of cement slabs, with a thickness of 2 cm, with a maximum thickness of 2.5 cm. In the middle, a square grid of No. 8 or 10 wire is used as reinforcement, and 1 cm of cement is applied on each side. Two rows of 10 round holes with a diameter of 2 cm are reserved in the middle and lower part as water permeable holes. A connecting ring is prefabricated where the two ends are connected with the plug, which is used to connect with the plug.

3. The thickness of the two plugs is similar to that of the two transverse sides, but the difference is that the upper edge of the two plugs is thickened, and a reinforced rib with a width of 3 cm and a thickness of 4 cm is prefabricated. It is used for three-dimensional cultivation of Gastrodia elata to carry the weight of the box above. The prefabricated connecting ring is also made at the intersection of the two horizontal sides, and when the two rings overlap, the pin stick is inserted into the ring to form a whole.

The prefabricated connection ring where the plate is connected with the board, in order to prevent its corrosion, it is best to use plastic products. Generally, plastic pipes can be used to cut the plastic pipe into the required length and tie it with the pre-buried wire grid, so that it is firmly combined and not easy to fall off. During pouring, the binding place should be completely buried in cement so that it does not come into contact with the outside world, so as to prevent the connection ring from falling off due to moisture corrosion. The connecting ring is prefabricated outside the box, mainly for the convenience of disassembly and assembly.

When in use, as long as the base plate is set up according to the distance, the transverse side and the plug are set up on the bottom plate, the connecting ring and the connecting ring are intersected, and the pin stick is inserted into the hole to make it an integral whole. Then you can plant flax according to conventional fillers. When not in use, pull out the pin stick and it can be decomposed into a cement board.

Because the box is a cement component and the connecting ring is plastic, it will not rot or rust in a wet environment, and can be used for a long time as long as it does not fall. Even if you break a component and replace it with other components, it can still be combined and interchangeable.

To produce this kind of cement box, as long as a set of moulds with corresponding sizes of bottom plate, horizontal side and plug head are prefabricated, the mold can be nailed with wood, and the bottom surface can be made of glass plate or plastic plate, so as to produce a certain degree of finish during demoulding. Tie up the corresponding wire grid, it can be cast in large quantities, and the cost is very low, especially for those who are ready to engage in factory production, a lot of investment can be saved by this method. The key to making is to arrange the position of the connecting ring on each board, so as to avoid the contradiction between the ring and the ring and can not be intersected. Therefore, it is necessary to strictly define the position and size of the upper ring of each component to make it combinatorial and interchangeable.