HRB bearings in the course of the operation prone to bias, especially in the larger oscillation equipment is more serious. The
reasons for the occurrence of the deviation of the sliding bearing
operation should be considered from two aspects, the internal bearing
factors and external environmental factors, compared to the internal
factors of the bearing to be important. When the bearing appears on the error, we must promptly identify the
reasons and make effective adjustments, failure factors can refer to the
following analysis:
First,
the internal factors, bearing and shaft conditions: 1. Bearing the
bottom of the fixed hole depth is not the same, the depth does not
affect the installation. But
after installation, with the oscillation, the nut will change the
degree of effort, and ultimately involves the HRB bearing fixed height,
resulting in one end bearing on the position changes 2. Shaft material
quality is poor, when the load, the shaft will appear to varying degrees Bending phenomenon, resulting in displacement of HRB bearing pairs. 3. Equipment structure design is unreasonable, the axis of the two
support points too far away, but also easily lead to HRB bearing on the
deviation.
Second, external factors, external work environment. 1. Equipment processing material changes, resulting in bearing by the load instantaneous increase. At
this point, the shaft of the fixed HRB bearing by the impact of
serious, prone to displacement 2. Particulate matter intrusion bearings,
long-term operation will also lead to HRB bearing deviation. Therefore, try to keep the external working environment of the device
3.HRB bearing lubricant to keep the amount of balance, and the brand
used as much as possible.
Modern
drilling sector in China is relatively late, but drilling machinery in
China's starting point is very high development speed. Drilling machine work is divided into two parts, one is to cut the rock, the second is to remove the deep mineral samples. As
China's vast land, to be developed more mineral resources, geophysical
sector has been the support of national policy, directly led to the
rapid development of drilling machinery. At present, the drilling depth of the Chinese drilling machine can be
from 2 meters to 15500 meters, the mining depth of the process of
deepening the Japanese imports of bearings play a key role.
China's
drilling equipment developed in the 11th century, was mainly based on
human excavation, basically do not have the characteristics of modern
mechanization. Until
the fifties of last century China independently developed a mechanical
and hydraulic combination of new drilling machine, rewrite the gaps in
China's drilling machinery. Since
the 1970s, in order to improve the drilling machine performance, can
adapt to high hardness diamond drilling, rotating parts using
7002CTYNDBLP4 bearings, 35TAC72B bearings and other high-speed precision
bearings imported from Japan products. The replacement of high-performance bearing parts, so that the degree
of hydraulic drilling machine has been improved, drilling speed reached
2400-3000 r / min, while drilling efficiency is also greatly improved.
In the 1980s, China's drilling machine entered a new stage of development. The
use of imported bearings and other high-performance rotating parts, the
drilling machine from the mechanical and hydraulic structure into a
full hydraulic drilling rig, with a strong mobility, the operation of
the effort, torque and speed range of large changes in the
characteristics of the general development With the application.
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