The Apron feeder is a kind of multi-purpose short-range mine feeder equipment. It is widely used in the various fields in our country, and it has characteristics of large conveyor capacity and high transmission efficiency. Apron feeder can usually be divided into heavy, medium and light according to its bearing and conveying capacity of ore. Apron Feeder Mining is an auxiliary equipment of transportation machinery. This machine is used as a silo for continuous and uniform feeding to primary crusher in crushing and grading workshop of large concentrator and cement, building materials and other departments. It can also be used for conveying materials with larger particle size and proportion in a short distance. We summarized the Apron Feeder in the design process need to pay attention to some problems to introduce.
The high strength dozer die forging chain with large pitch is used as the traction part. The two chains bypass a pair of driving sprockets installed at the head of the Apron Feeder and a pair of tensioning wheels at the tail of the apron feeder to form a closed loop. Each link of the two chains is equipped with an overlapping, heavy-duty structure of the conveyor groove to form a continuous conveyor line capable of carrying materials. Its dead weight and material weight are supported by multiple rows of support wheels, chain support wheels and slide beams mounted on the body. The transmission system is connected to the reducer by the AC frequency conversion speed regulating motor, and then the self-actuating mechanism is directly driven by the expanding sleeve and the fox moving device. The material of the discharging person of the tail bin is transported to the front of the body along the conveying line and discharged to achieve the purpose of continuous and uniform material limiting of the working machinery below.
Apron Feeder Mining is mainly composed of spindle device, driving device, supporting device, chain belt device, tensioning device, apron hopper, frame and other parts. Among them: tension device adopts screw tension type, tension bearing adopts section steel and bolt connection structure, appearance, beautiful, convenient installation and disassembly. For heavy and super heavy tension device, add a set of springs to cushion suction vibration.
In addition to the following two features:
(1) The screw of the apron feeder tension device is located above the slide seat and under the inverted equilateral Angle steel, and the screw part is not polluted and damaged; Tension device for heavy and super heavy products, screw through slide seat center. (
(2) The tension device is divided into two kinds of structure: standard type and heavy type, and the lower tension device of the bucket elevator is kept serialized and universal.
The head and tail bearings are mostly rolling bearings, and the head bearing seat is not supported horizontally on the frame, but is vertically connected to the frame with four bolts. This on the one hand, the bearing seat force and the working tension direction is consistent, improve the bearing seat and connecting bolt force condition, on the other hand, reduce the space size. The combined sprocket is adopted, the material of driving sprocket wheel is cast iron or steel, and the rim is made of high wear-resistant hardened steel into a replaceable tooth structure. The gearless rim of the tensioning sprocket is combined and replaceable. This can reduce a lot of maintenance, reduce maintenance costs. In addition, the replaceable gearless edge can ensure the correct and constant contact between the chain and the sprocket to prevent the tooth surface from gluing. Back-up roll wheel is external type, separated from traction roller, has the following advantages:
(1) Easy to set the guide rail tank body.
(2) Reduce traction roller wear.
(3) easy to manufacture.
For heavy and overweight Apron Feeder Mining, a fixed back-up roller is set on the frame. The lubrication of the roller and the head and tail bearing seat adopts the centralized oil supply mode to ensure the timing and comprehensive lubrication. The hydraulic coupler is installed between the drive motor and the reducer to ensure the smooth start of the plate feeder and overload protection. The chain drive between the reducer and the main shaft has the buffering effect, but also makes the transmission ratio stable, can transfer high power, adjustable center distance, easy to arrange and install. The drive shaft is equipped with a backstop to prevent reverse rotation of the conveyor groove.
