Structural design of quantitative elevator for Aga

Structural design of quantitative elevator for Agaricus bisporus culture material

1 chain plate drive part

the chain plate drive system is driven by the motor through the cycloidal needle wheel reducer, which minimizes the transverse size of the quantitative elevator. The chain plate drive sprocket device is composed of a drive sprocket shaft, two drive sprockets, bearings with seats at both ends, and a reduction sprocket. By changing the reduction sprocket with different tooth numbers, the adjustment of chain plate conveying speed can be realized. The bolt performance grades of the chain plate driving part are divided into more than 10 grades, such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc., as shown in Figure 2

2 chain plate driven part

the chain plate driven part is composed of a driven chain axle, two driven sprockets, and plain bearings at both ends. The bearings are lubricated regularly with oil gun. The sliding bearing seat is of welded structure, solid and compact, which is convenient to adjust the tightness of the conveyor chain

3 operating mechanism

the operating mechanism is mainly composed of two conveying chains and chain plates. It is the main mechanism for the quantitative elevator to complete the conveying task of culture material, and it is also a key part that is easy to be consumed. The conveying chain of the wooden machine is only used as a traction body, and the chain itself is not used as a bearing component. The weight of the conveying chain plate and materials is supported by the guide rails welded on both sides of the upper frame. Considering the corrosive parts of the Agaricus bisporus culture material, the chain plate material should be corrosion-resistant stainless steel. As the Agaricus bisporus culture material is loose, baffle plates are welded on both sides of the chain plate. Bending the chain plate not only improves the rigidity of the chain plate, but also saves space. Due to the wet weight of the material, the friction with the chain plate is small, and the material will slip in piles. A certain height of push plate needs to be added on the chain plate. The included angle of the push plate tilts forward to increase the pushing capacity. In order to avoid significant deformation of the push plate caused by excessive material resistance, an experimental position low push plate is set every two chain pitches. The layout of conveyor chain plate is shown in Figure 3

4 shift wheel assembly

shift wheel assembly is mainly composed of shift wheel welding, swing arm welding, connecting shaft, a pair of reduction sprockets and two pairs of bearings with seats. It is the core mechanism for uniformly loosening materials and realizing quantitative transportation of materials. Due to the wet weight of the material and large resistance, it is easy to block the material at the position of the puller, so the linear speed of the puller is required to be greater than the conveying speed of the chain plate. Through the reasonable arrangement of the shift rod in the welding of the shift wheel, the culture material is picked, pulled, raked and thrown to make the material reach a uniform and loose state. The connecting shaft is connected with the swing arm welding with bolts, and the shift shaft is fixed on the swing arm welding through the bearing seat. The shift wheel welding, swing arm welding and connecting shaft form a whole. By adjusting the adjusting screw connected to the swing arm welding, the paddle wheel welding can swing up and down with the connecting shaft as the fulcrum, so as to adjust the distance between the paddle wheel and the conveying chain plate, and realize the adjustment of the conveying volume of materials. Since the connecting shaft is concentric with the motor shaft, the center distance of the sprocket will not be affected when adjusting the distance between the shift wheel and the conveying chain plate. It can also be used to adjust the linear speed of the shifting wheel by replacing the reducer with different tooth numbers for the low-precision speed sprocket. The structure of the paddle wheel assembly is shown in Figure 4