Hub reductor for mine electric drive heavy-duty car

A wheel-side reducer, heavy-duty vehicle technology, applied in the direction of transmission, gear transmission, belt/chain/gear, etc., can solve the problems of insufficient contact fatigue safety factor, affecting the working performance of the motor, and limited range of transmission ratio variation, etc. Achieve the effect of improving axial space utilization, small contact fatigue stress and large variation range

Inactive Publication Date: 2012-03-21
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

At present, most mining vehicles use two-stage planetary reducers. Document 1 (Mining Machinery; March 2008; 38) introduces a wheel-side two-stage planetary reducer for mining vehicles, which is used in large-tonnage electric wheel mining dump trucks. In the

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  • Hub reductor for mine electric drive heavy-duty car
  • Hub reductor for mine electric drive heavy-duty car
  • Hub reductor for mine electric drive heavy-duty car

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] The invention relates to a mine-used electric transmission heavy-duty vehicle wheel speed reducer, which includes power transmission components, execution and connection components, lubrication and sealing and breathing systems, and cooling systems.

[0020] Power transmission components: including the main drive shaft, flange, primary gear, secondary gear, tertiary gear, primary, secondary, and tertiary planetary gear shaft, bearing, planet carrier, etc., the main function is to transfer the high speed of the motor, The low-torque power becomes low-speed and high-torque to meet the driving ...

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Abstract

The invention is suitable for the field of mechanical transmission devices, in particular to the field of transmission devices for large-tonnage mining dump trucks with electric wheels, and provides a hub reductor for a mine electric drive heavy-duty car. The hub reductor is characterized by adopting three stages of planetary reducing mechanisms; the first-stage and the second-stage planetary reducing mechanisms are differential gear trains; the third-stage planetary reducing mechanism is an ordinary gear train; in first-stage transmission and second-stage transmission, sun gears are power input components, and planet carriers and gear rings are power output components; and in third-stage transmission, a sun gear is a power input component, a planet carrier is fixed, and a gear ring is a power output component. The invention has the benefits that the transmission ratio changes within a large range, so as to transmit even larger torque; one more stage of planetary reducing mechanism is adopted for providing driving torque required by driving the heavy duty car, so that the bending fatigue stress and the contact fatigue stress of a last stage gear are reduced, which ensures higher safety factor; and the axial space utilization rate of the whole hub reductor is improved while the radial space is fully used, so that the integral radiating area is enlarged to achieve integral thermal balance better.

Description

[0001] technical field [0002] The invention is suitable for the field of mechanical transmission devices, especially the field of transmission devices for large-tonnage electric wheel mining dump trucks. Background technique [0003] The wheel reducer is a commonly used power transmission device on vehicles or construction machinery, especially in electric wheel mine dump trucks, it is the only deceleration and torque increasing mechanism, which plays a key role in power transmission. At present, most mining vehicles use two-stage planetary reducers. Document 1 (Mining Machinery; March 2008; 38) introduces a wheel-side two-stage planetary reducer for mining vehicles, which is used in large-tonnage electric wheel mining dump trucks. In the process, there are problems such as limited variation range of transmission ratio, affecting the working performance of the motor, small transmission torque, low axial space utilization, gear bending fatigue, and insufficient safety fa...

Claims

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Application Information

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IPC IPC(8): F16H1/32
CPCF16H1/46
Inventor 杨耀东杨珏何建成康翌婷何耀殷玉明
Owner UNIV OF SCI & TECH BEIJING
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