In very high structural steel plants with lightweight designs, an additional energy-absorbing counter-frame is also frequently positioned under the screening machine itself for the absorption of reaction forces. The oscillating suspension of the screen is mounted on the counter-mass, which is also elastically suspended, and which slightly reduces the oscillation amplitude of the screening machine, but which dissipates a large portion of the resulting dynamic acceleration through the counter-movement. <\/p>\n
From experience, these counter-frames weigh between 50 – 100 % of the weight of the screening machine itself. The more counter-mass, the lower the transmission of the residual force! Due to the large mass inertia of the screening machine, the counter-mass only compensates a relatively small fraction of the effective oscillation amplitude of the screen. <\/p>\n
ROSTA offers both the type AB low-frequency screen suspension and the very high-load type AB-D suspensions for the support of the counter-frame. It goes without saying that the supports of the counter-frame mass must also be able to support the weight of the screening machine and the counter-frame.<\/p>\n
It is above all recommended to install counter-frames if several very heavy screening machines are working on the same processing deck. Two or more screening machines will never work (oscillate) synchronously with each other, which leads to reciprocal bending stresses in the processing deck or in the working platform. In addition to the transmission of the residual forces to the ground, which is very unpleasant for human beings, these asynchronous bending stresses lead to material fatigue in the complete construction of the plant.<\/p>\n","protected":false},"excerpt":{"rendered":"
In very high structural steel plants with lightweight designs, an additional energy-absorbing counter-frame is also frequently positioned under the screening machine itself for the absorption of reaction forces. The oscillating suspension of the screen is mounted on the counter-mass, which is also elastically suspended, and which slightly reduces the oscillation amplitude of the screening machine, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-95568","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/95568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/comments?post=95568"}],"version-history":[{"count":0,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/95568\/revisions"}],"wp:attachment":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/media?parent=95568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/categories?post=95568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/tags?post=95568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}