Self-powered anti-eccentric shield hob
A technology of anti-eccentric wear and power mechanism, which is applied in mining equipment, tunnels, earthwork drilling, etc., can solve the problems of hobs prone to eccentric wear, reduce the number of tool changes, avoid eccentric wear, and prevent eccentric wear Good results
Active Publication Date: 2021-02-02
WUHAN UNIV
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide an automatic power anti-eccentric wear shield hob with high practicability, wide application range and good anti-eccentric wear performance in view of the above-mentioned problem that the hob of the existing shield machine is prone to partial wear , it can reduce hob eccentric wear in actual construction, improve hob performance, and prolong hob cutting life
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[0029]In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0030]Such asFigure 1-4 As shown, an automatic force anti-eccentric wear shield hob provided by an embodiment of the present invention includes a cutter shaft 10, a cutter body 20, a cutter ring 21 installed on the cutter body 20, and a bearing installed in the middle of the cutter shaft 10. The force device 30 and the anti-eccentric wear device 40 symmetrically installed at both ends of the force device 30. The cutter body 20 is installed on the outer ring of the force bearing device 30 and the anti-eccentric wear device 40. The bearing device 30 includes a roller 31 and a first bearing 32. The roller 31 is nested on the cutter shaft 10 and can rotate synchronously with the cutter shaft 10. The first bearing 32 is installed on the roller...
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The invention relates to a self-powered anti-eccentric shield hob. The self-powered anti-eccentric shield hob comprises a hob shaft, a hob body and a hob ring installed on the hob body and further comprises a force bearing device installed in the middle of the hob shaft and anti-eccentric devices symmetrically installed at the two ends of the force bearing device, the hob body is installed on outer rings of the force bearing device and the anti-eccentric devices, the force bearing device comprises a rolling wheel and a first bearing, the rolling wheel is installed on the hob shaft and can synchronously rotate along with the hob shaft, the first bearing is installed on the rolling wheel and located between the rolling wheel and the hob body, the anti-eccentric devices comprise elastic pieces, pawls and ratchet wheels, one ends of the elastic pieces are fixedly connected with the hob shaft, the other ends of the elastic pieces are fixedly connected with the pawls, the ratchet wheels areinstalled in the hob body and can synchronously rotate along with the hob body, and a tooth-shaped groove matching with the pawls is formed in the inner edge of the ratchet wheel. According to the elf-powered anti-eccentric shield hob, the anti-eccentric devices are arranged at the two ends of the force bearing device, so that the eccentric wear phenomenon of the hob is effectively avoided, the cutting service life of the hob is prolonged, the hob replacement frequency is reduced, accidents such as hob ring damage caused by eccentric wear of the hob are avoided, and the engineering cost is effectively reduced.
Description
Technical field[0001]The invention relates to the technical field of shield cutters applied in underground engineering construction, in particular to an automatic force anti-eccentric wear shield hob.Background technique[0002]Since the beginning of the 21st century, the number of tunnel projects in my country has increased dramatically. The shield method has become the main method of tunnel construction due to its high degree of mechanization, fast excavation speed, strong adaptability, and safety and efficiency. As the bearer of stratum excavation, the hob directly reflects the adaptability of the machine to soil / rock, and whether the hob can normally perform cutting operations directly affects the construction efficiency and cost. Under normal circumstances, during the tunneling process of the shield machine, the hob rotates along the axis of the cutter under the action of the friction provided by the face of the tunnel, and uniform wear occurs. The degree of circumferential wear ...
Claims
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IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 王浩杰张晓平许丹唐少辉
Owner WUHAN UNIV