14G 15G blade scraper small factory direct wholesale prices manufacturers transom bolts Benniu scraper [Accessories]

 14G 15G blade scraper small factory direct wholesale prices manufacturers transom bolts Accessories] [Benniu scraper for SGD630 / 220 type Comprehensive Mine scraper conveyor ???? main technical parameters of the model for the sprocket assembly : both ends of the height of 450mm, the center of the sprocket shaft distance to 723mm, the distance between the two injection hole 658mm. Sprocket portion of the model with 7 tooth sprocket assembly 42CrMo forged heat-treated material sprockets, sprocket body outer diameter 448mm, supporting the use of sprocket sizes 26 × 92 C-level heat chain. Scraper conveyor in coal production and construction of the development, has gone through three stages. The first stage in the 1940s, is detachable scraper conveyor, it can only be laid in the face in a straight line, with the face forward, the need to manually disassemble, move, assemble. Scraper chain plate, mostly single-chain, such as V-type, SGD-11 type, SGD-20 type and other small power light scraper conveyor. The second stage is the early 1940s by the German manufacturer of flexible conveyor, it shearer, metal stents with mechanized coal mining. This scraper conveyor cough accommodate uneven convex uneven floor conditions and the level of bending, time-shifting set without dismantling and coal capacity has also been increased, as was the model SGW-44 type scraper conveyor is at this stage representative products. Into the 1960s as a result of hydraulic support, in order to meet the needs of mechanized mining, scraper conveyor developed to the third stage, the development of high-power heavy armored cough bending scraper conveyor, such as SGD-630/75 type, SGD- 630/180 type, etc. belong to this stage of the product.