NBD planet external meshing four-shunt pile driver speed reducer with oil temperature alarm function

Abstract

The invention relates to the technical field of pile driver speed reduction, in particular to an NBD planet external meshing four-shunt pile driver speed reducer with an oil temperature alarm function. The NBD planet external meshing four-shunt pile driver speed reducer comprises a box, motors, a cover plate and a transmission part and is characterized in that an oil temperature sensor is arranged in the box; labyrinth type ventilating covers are arranged on the cover plate; the two motors are connected under the box in an inverted mode, and the extending ends of motor shafts are connected with NBD planet speed reducer bodies; the transmission part comprises driving wheels, shunt gears and a center gear ring, the driving wheels are arranged on output shafts of the NBD planet speed reducer bodies, the shunt gears are symmetrically arranged at the two sides, shafts of the shunt gears are fixed to supporting plates, the supporting plates are connected to end faces of housings of the NBD planet speed reducer bodies, the center gear ring is connected with a flange of a main cylinder, the main cylinder is supported in the box through bearings and connected with the flange, and the flange is connected with a drill rod. The NBD planet external meshing four-shunt pile driver speed reducer has the advantages that the dynamic condition of the speed reducer can be mastered according to changes of oil temperature; air pressure inside and outside the box is balanced through the labyrinth type ventilating covers; as the motors are arranged in the inverted mode, the overturning moment of a pile driver is reduced, the probability of overturning accidents is reduced, four-shunt bearing capacity is high, and hardening and tempering cost of the inner gear ring is low.

Description

【Technical field】 [0001] The invention relates to the technical field of pile driver deceleration, and relates to an oil temperature alarm NBD planetary external meshing four-shunt pile driver reducer. 【Background technique】 [0002] With the rapid development of my country's economy, construction machinery has been widely used. As a basic construction, long screw pile machines are scattered all over the world, so that the demand for pile machines has increased sharply. Said: "There is even a phenomenon of queuing up to pick up the goods at the pile driver factory with a large amount of money. The three-ring reducer manufacturer that matches the power head with the pile driver factory has increased its output so that each pile driver manufacturer can supply a complete set Goods." (See Science and Fortune, 2013.01) [0003] Background technology: China Patent Office has published the following patents successively: [0004] (1) Power head of screw pile machine (201020300223.7...

AI Technical Summary

Problems solved by technology

The disadvantage of the ventilation hood (JB1130-70) is: the exhaust hole is too small (the maximum diameter of the straight hole in the box is only Φ20mm, and the small hole outside the box that is in contact with the environment is even smaller)

For the pile driver reducer, the disadvantages of the ventilation cover (JB1130-70) are even more obvious: open-air operation, large dust, and the small exhaust holes will gradually become smaller after the dust sees water, so that the ventilation cover will gradually lose the inside and outside of the box. Pressure balance, when the air pressure inside the box is greater than the air pressure outside the box, the lubricating oil will leak from the seal;

[0011] (c) Disadvantages of top-mounted dual motors: Due to the harsh working conditions on the construction site, most operators do not have maintenance equipment and skills. It is difficult to remove the heavy motor and reducer, so repair and maintenance are difficult, and the cap on the top of the motor is difficult to waterproof. more difficult to dust

[0012] (1) On April 26, 2006, a pile driver suddenly collapsed in a construction site on Xiangheyuan Road outside Dongzhimen, Beijing, causing the death of two workers

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