Grate plate protection movable block of single-tooth roller crusher convenient for disassembly and replacement

Abstract

The invention relates to a grate plate protection movable block of a single-tooth roller crusher convenient for disassembly and replacement. The grate plate protection movable block comprises a grate plate body and a protection movable block connected with the grate plate body, and is characterized in that the protection movable block consists of a left end movable block, a right end movable block and a middle movable block; the normal sections of the left and right end movable blocks and the middle movable block are long structural bodies with triangular upper parts and having regular trapezoidal insertion grooves in the lower parts; bolt holes are formed in the middle lower parts of the left and right end movable blocks and the middle movable block; the grate plate body is a long grate plate having regular trapezoidal bosses, matched with the regular trapezoidal insertion grooves, in the middle parts; bolt holes are also formed in the grate plate body; the regular trapezoidal insertion grooves of the protection movable block and the regular trapezoidal bosses of the grate plate body are inserted, and are fixedly connected through bolts, nuts and spring washers. The grate plate protection movable block has the advantages of simpleness and convenience for replacement, reduction of maintenance workload, shortening of maintenance time and reduction of spare part consumption.

Description

technical field [0001] The invention belongs to the field of metallurgical equipment, and in particular relates to a single-tooth roller crusher grate plate protection block which is convenient to disassemble and replace in sintering production. technical background [0002] In sintering production, single-toothed rollers are generally used to crush finished sintered ore. Three rows of tooth crowns are arranged staggeredly on the circular shaft, and grate plates are evenly arranged on the lower part of the shaft. When the shaft rotates, the tooth crowns pass through the gaps between the grate plates. , breaking the large pieces of sintered ore falling on the grate plate into small pieces of sintered ore smaller than the gap of the grate plate. [0003] Since the temperature of the sintered ore is above 300°C, the hardness of the grate plate will drop significantly at high temperature, and it will be impacted by crushing for a long time, and the wear speed will be faster. The...

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Problems solved by technology

[0003] Since the temperature of the sintered ore is above 300°C, the hardness of the grate plate will drop significantly at high temperature, and it will be impacted by crushing for a long time, and the wear speed will be faster. The service life of most domestic grate plates is less than one year. It is often necessary to replace all the grate plates. Larger sintering machines need to replace more than 20 grate plates, resulting in long downtime, affecting the operation rate of the sintering machine, and requiring large funds

In order to improve the service life of the toothed roller crusher, loose blocks or protective caps are inlaid on the upper surface of the grate plate body. The prior art patent number 201020638693.4 discloses a combined grate plate for a single toothed roll crusher; The main body and the movable protective cap connected with the grate plate body, the right end of the movable protective cap is connected with the grate plate body through a pressing block, a groove is arranged on the upper part of the grate plate body, and a boss is opened at the lower part of the movable protective cap. The latter is connected by a boss and a groove. Although this structure also has the advantages of simple processing and protection and low cost of use, because the groove is provided on the movable protective cap, the movable protective cap is easy to follow the groove under the action of high temperature and mechanical force. The mouth is broken, which affects the service life of the movable protective cap

[0004] In order to solve this problem, Patent No. 200920137619.1 discloses a sintered single-roll crusher grate device with a segmented protective cap, the sintered single-roll crusher grate device with a segmented protective cap, but because its structure is also There is a groove on the upper part of the body, and a boss is opened on the lower part of the movable protective cap. When the trapezoidal surface is in contact, there will be a gap on the upper plane. When the upper plane is in contact, there will be a gap on the trapezoidal surface. The block shakes, which accelerates the wear of the live block and affects the stability

[0005] Patent No. 201420338281.7 discloses a "dovetail groove type grate plate" with a protective plate. Its dovetail groove and other forms are very difficult to install and disassemble. Disassembly, there is a small contact area in use, and high precision is required

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