How to correctly replace the hammer head of the stone hammer crusher?
Changing the hammer head is a technical job, especially the replacement of the hammer head of a large hammer crusher. If the method is used correctly, it often achieves twice the result with half the effort, and on the contrary, exhausting the three armies is also half the result with twice the effort.
Hammer crusher hammer head weight small also have hundreds of pounds, hundreds of pounds of large. When making a hammer turn or replacing the work, a person is not operational, if several people cooperate, the method taken is not right, and the implementation is also very troublesome. Moreover, due to improper operation, there will even be injuries, so you must be careful.
The hammer crusher produced by our company in order to facilitate customers to carry out daily maintenance work, many places have made humanized design, making daily maintenance work become relatively simple. And the stone crusher hammer is the key product of our company's daily sales of crusher accessories, and we attach great importance to its related work. Today, I mainly combine the company's design concept and customer experience to briefly talk with you about how to correctly replace the crusher hammer.
First of all: Shandong Sanxiang Heavy Industry Co., Ltd. in order to facilitate customers to replace the crusher hammer head, there are special round holes for extracting the hammer shaft in advance. When replacing the high chromium alloy hammer head, slowly pull out the hammer shaft along the round hole, remove the hammer head that needs to be replaced in order, and then replace the new hammer head back.
Many people reflect that the process of pulling the hammer shaft out is very troublesome, and sometimes it is hard to move, so the following will teach you how to quickly and easily pound the hammer shaft out.
There are a lot of steel bar heads on the site, find a cutting machine to cut a length of about 40 centimeters of steel bar, and then cut a few short pieces, in a long steel bar welded into a triangle or square, easy to pull back the hammer shaft with your hand to pull out. When the hammer head is replaced, when the personnel inside the chamber align the hammer shaft with the round hole, the personnel outside take the steel rod prepared before and use the welding machine directly on the end of the hammer shaft, if the direct pumping is difficult, you can take the method of rotating outward pumping. Until the replacement of the high chrome hammer head with the hammer shaft is completed, the steel bar is cut off with the cutting machine, and the rest of the work is simple and quick.
Second: Install a pulley block above the machine port. The protection body method is to weld a gantry frame in front of the machine mouth, which is about half a meter higher than the height of the machine mouth, to prevent the gravel that occasionally flies out of the crusher during production from hitting it and causing damage. When the hammer head is replaced with the hammer head, the relevant hammer head is directly transported to the vicinity of the machine mouth, and the crusher mouth is lifted by the pulley block installed on the gantry. At this time, a simple pulley block is used in the inner cavity of the machine to be responsible for the replacement work inside the machine. One hundred pounds of hammer a person strong enough to carry, those hundreds of pounds of hammer must use the pulley set for related lifting work.
Third: Hammer replacement work pay attention to the principle of symmetrical replacement. Taking the PC1614 hammer crusher as an example, there are a total of four hammer shafts on the rotor disc, which are symmetrically distributed, and the high chromium alloy hammer heads are generally mounted in a 4-2-4-2 manner, with a total of 12 hammer heads. When replacing the hammer head, if one of the two axes on the opposite side needs to be replaced, the other one should also be replaced no matter what the wear is in, the main purpose is to protect the balance of the entire rotor assembly, otherwise, it is easy to damage the bearing or even the machine shaft due to the irregular movement of the eccentric force.
Fourth: In order to save the wear cost of the high chromium alloy hammer, our company suggests that the newly replaced hammer should be turned around when the wear does not exceed one-third, and the hammer at this time can improve its service life like the new hammer, otherwise, it will accelerate the actual wear speed of the hammer because of the increase in the contact area of the impact material.
Fifth: When the wear degree of the wear-resistant steel part of the high chromium alloy hammer head has exceeded the theoretical maximum, it is necessary to replace the hammer head in time, otherwise it is easy to clog the leakage plate.
In summary: the hammer crusher hammer head replacement work produced by Shandong Sanxiang Heavy Industry Co., Ltd. should pay attention to methods and strategies, and taking the appropriate replacement method will let you get twice the result with half the effort. At the same time, in order to reduce the wear of the crusher parts, it is necessary to turn the hammer head in time. The wear degree of the high chromium alloy hammer produced by our crusher factory(plant) has a specified limit, and it is necessary to replace the new hammer in time to prevent plugging.