Shock absorber for gearbox and shock absorbing protecting method

A shock absorber and gearbox technology, which is applied in the direction of belts/chains/gears, transmission parts, mechanical equipment, etc., can solve problems such as rapid damage, deviation between distance and theoretical size, and affect the life of elastic bodies, so as to achieve rigidity Increases smoothness, eliminates additional constraints, and prolongs service life

Active Publication Date: 2017-03-22
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the equipment load fluctuates abnormally rapidly and greatly, rapid damage often occurs, resulting in high maintenance and replacement costs
[0007] 2. It is very difficult to replace the gear box shock absorber in the prior art
The gear box shock absorber of the existing structure is mainly composed of a beam, a support tube, a bottom plate, an upper elastic body, a lower elastic body, etc. If it is necessary to successfully replace the gear box elastic body, first of all, it is necessary to lift the The beam, and the beam generally weighs several hundred kilograms. There is generally no crane on the fan, and it is difficult to lift it by manpower. To replace the lower elastic body under the torque arm of the gearbox, you need to use a jack to lift the gearbox. It is located in a remote place and operates at high altitude, and the operating space in the engine room is extremely limited. At present, most wind turbine gearboxes do not have a platform for placing a jack under the torque arm, so it is very difficult to replace it.
[0008] 3. The center height of the gearbox shock absorber in the prior art does not have an adjustable function
Due to the machining error and assembly error in the gearbox and frame of the wind power generating set, the distance between the torsion arm at both ends of the gearbox and the frame deviates from the theoretical size, resulting in the upper and lower The uneven compression of the lower elastic body not only affects the life of the elastic body itself, but also produces a downward or upward additional force on the torque arm of the gearbox due to the uneven compression of the upper and lower elastic bodies, and this force will act on the rotating shaft of the fan , running for a long time will cause the spindle to overheat and affect the life of the whole machine

Method used

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  • Shock absorber for gearbox and shock absorbing protecting method
  • Shock absorber for gearbox and shock absorbing protecting method
  • Shock absorber for gearbox and shock absorbing protecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the gearbox shock absorber 01 is installed on both sides of the gearbox 02, the gearbox torque arm 03 passes through the middle space of the gearbox shock absorber 01, and the gearbox shock absorber 01 is fastened to the frame by bolts 04 on.

[0039] Such as figure 1 , figure 2 with image 3 As shown, the gearbox damper 01 includes a beam 1 , an elastic body 2 , a support tube 3 , a bottom plate 4 , a wedge-shaped backing plate 5 , a washer 6 , an adjusting bolt 7 and a jacking screw 8 . The two elastic bodies 2 of the gearbox shock absorber 01 are respectively placed between the beam 1 and the gearbox torsion arm 03, and between the bottom plate 4 and the gearbox torsion arm 03, and a certain amount of pre-compression is realized by bolts. The wedge-shaped backing plate 5 is installed between the bottom plate 4 and the frame 04. The frame 04 is processed into a slope with a certain angle and closely matched with the wedge-shaped backing...

Embodiment 2

[0045] Such as Figure 8 As shown, the second embodiment is basically the same as the first embodiment, and one or more trumpet-shaped spacing structures with variable cross-sections are also distributed in the middle region of the elastic layer 10, but the spacing structures are blind holes that do not penetrate the elastic layer.

Embodiment 3

[0047] Such as Figure 9 As shown, the elastomer 2 includes a separator 9 and an elastic layer 10, and the separator 9 and the elastic layer 10 are bonded together through high-temperature vulcanization. Annular grooves 11 are distributed, and the upper and lower grooves 11 may or may not communicate with each other. The elastic block 12 in the middle of the elastic layer 10 is located in the middle of the annular groove 11, and the transverse direction of the annular groove 11 The cross-sectional area gradually increases from the middle of the elastic body 2 to the upper and lower surfaces, and the inner side of the longitudinal section of the groove is linear, and the outer side is arc-shaped. As the load borne by the elastic body 2 increases, the inner side of the elastic layer 10 and the outer side of the middle elastic block 12 gradually contact, and the same effect as that of the first and second embodiments can also be achieved.

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PUM

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Abstract

The invention discloses a shock absorber for a gearbox and a shock absorbing protecting method. The shock absorber comprises a cross beam, supporting pipes, elastic bodies and a bottom plate; each elastic body comprises elastic layers and separating plates; the separating plates are distributed on outer sides of the elastic layers; and spacing structures are formed in the middles of the elastic layers and are through holes penetrating through the elastic layers or blind holes which do not penetrate through the elastic layers. The spacing structures are formed in the middles of the elastic layers, when loads borne by the elastic bodies are increased continuously, the spacing structures in the elastic layers can be closed gradually, and the rigidity of the elastic bodies can be increased nonlinearly. The rigidity of the elastic bodies of the shock absorber can be increased gradually, and the elastic bodies can realize effects of absorbing shock and preventing damage and can provide the sufficient supporting force for the large loads.

Description

technical field [0001] The invention relates to a vibration reduction protection of a gear box damper, in particular to a method for preventing the gear box damper from being damaged by changing the variable stiffness of the gear box damper. Background technique [0002] In engineering fields such as wind power or other locomotives, when the equipment is in normal operation, it is hoped that the gear box damper has a relatively stable stiffness to achieve a better vibration damping effect, but when there is a heavy load condition, it is hoped that the gear box damper With high stiffness, the vibration amplitude of the equipment can be controlled within a safe range. When the limit load is rapidly and greatly increased, the stiffness of the gearbox shock absorber needs to be increased slowly to meet the good vibration reduction effect. , to avoid the gearbox shock absorber from being quickly damaged. [0003] The structural types of wind turbines mainly include doubly-fed, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/028
CPCF16H57/028
Inventor 岳涛胡伟辉林胜荣继刚秦中正杨超
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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