Pulley device and rotary drilling rig and long spiral drilling machine using pulley device

Abstract

The invention relates to a pulley device and a rotary drilling rig and a long spiral drilling machine using the pulley device. The pulley device comprises a shaft sleeve, a bearing, a hub and a wheelrim which are sequentially arranged from inside to outside in a sleeved mode; the inner ring of the bearing is in static connection with the bearing, and the outer ring of the bearing is in static connection with the inner ring of the hub; the wheel rim is in static connection with the outer ring of the hub detachably, the wheel rim is provided with outer positioning blind holes which extend in the radial direction, and the hole openings of the outer positioning blind holes are located on the wall surface of the inner ring of the wheel rim; and inner positioning holes communicating with the outer positioning blind holes are formed in the wall surface of the outer ring of the hub; the interiors of inner positioning holes are in static connection with a telescopic closed bag body, and an electrorheological liquid is contained in the closed bag body; and a conductive layer which is electrically connected with the electrorheological fluid is arranged on the inner wall of the closed bag body, and the conductive layer is electrically connected with a thermoelectric generator located at least one of the hub and the rim. According to the pulley device, the split structure is adopted, the wheel rim can be detached from the hub to be replaced, so that the whole pulley device does not need to be replaced, and therefore the pulley device is maintained conveniently.

Description

technical field [0001] The invention relates to the field of piling machinery, in particular to a rotary drilling machine, a long screw drilling machine and the pulley devices of the two. Background technique [0002] At present, judging from various national policies, key projects such as municipal construction, subway construction, high-speed rail construction, water conservancy, airport construction, and the Belt and Road Initiative continue to advance, and even increase investment, which drives the demand for piling machinery , requiring pile machinery to have the characteristics of high reliability, convenient maintenance, and low maintenance cost. [0003] Such as Figure 1 to Figure 3 As shown, the pulley device 1 of the existing rotary drilling rig includes a pulley body. The pulley body 5 is an integral casting. A bearing 7 and a shaft sleeve 8 are installed in the central perforation of the pulley body 5, and are fixed to the pulley body through a gland 6 and screw...

AI Technical Summary

Problems solved by technology

The replacement cycle of the pulley device 1 in the prior art is 1.5 years, and each rotary drilling rig has three pulley devices 1. Overall, the replacement cost is about 10,000 yuan

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