阅读说明：本技术 一种新型液压挖掘机行走减速机结构 (Novel walking speed reducer structure of hydraulic excavator ) 是由 石立京 张宏 秦家升 刘邓 文俊 周显 于 2020-06-28 设计创作，主要内容包括：一种新型液压挖掘机行走减速机结构,包括固定壳体和端盖,固定壳体和端盖之间设有若干级行星齿轮结构,输出端行星架通过固定螺栓与固定壳体连接在一起,固定壳体上设有与输出端行星架接触的主轴承,主轴承与输出端行星架之间设有调整垫；端盖与输入端太阳轮之间设有轴承；各级行星齿轮结构之间设有耐高温耐磨的垫片。本发明的液压挖掘机行走减速机结构,可避免更换浮动油封时采用专用工具或者破坏性操作带来结构破坏；可满足多工况载荷,大大提升行走减速机使用寿命,降低整机故障率；能够有效吸收端盖变形防止轮系烧结,同时输入级太阳轮与端盖之间采用轴承结构,能够弥补速度差带来的磨损和噪声等。(A novel walking speed reducer structure of a hydraulic excavator comprises a fixed shell and an end cover, wherein a plurality of stages of planetary gear structures are arranged between the fixed shell and the end cover, an output end planet carrier is connected with the fixed shell through a fixing bolt, a main bearing in contact with the output end planet carrier is arranged on the fixed shell, and an adjusting pad is arranged between the main bearing and the output end planet carrier; a bearing is arranged between the end cover and the input end sun gear; high-temperature-resistant and wear-resistant gaskets are arranged between all stages of planetary gear structures. The walking speed reducer structure of the hydraulic excavator can avoid structural damage caused by the adoption of a special tool or destructive operation when the floating oil seal is replaced; the load under multiple working conditions can be met, the service life of the walking speed reducer is greatly prolonged, and the fault rate of the whole machine is reduced; can effectively absorb the end cover and warp and prevent the train sintering, adopt bearing structure simultaneously between input stage sun gear and the end cover, can compensate wearing and tearing and noise etc. that the speed difference brought.)

1. The utility model provides a novel hydraulic shovel walking speed reducer structure which characterized in that: the planetary gear transmission mechanism comprises a fixed shell (1) and an end cover, wherein a plurality of stages of planetary gear structures are arranged between the fixed shell (1) and the end cover, one end close to the fixed shell (1) is an output end planetary gear structure, one end close to the end cover is an input end planetary gear structure, an output end planetary carrier of the output end planetary gear structure is connected with the fixed shell (1) through a fixing bolt (2), a main bearing (3) in contact with the output end planetary carrier is arranged on the fixed shell (1), and an adjusting pad (4) is arranged between the main bearing (3) and the output end planetary carrier; a bearing (15) is arranged between the end cover and the input end sun gear of the input end planetary gear structure; high-temperature-resistant and wear-resistant gaskets are arranged between all stages of planetary gear structures.

2. The novel hydraulic excavator walking speed reducer structure of claim 1, characterized in that: be equipped with tertiary planetary gear structure between fixed casing (1) and the end cover, including tertiary planet carrier (5), tertiary sun gear (7), second grade planet carrier (8), second grade sun gear (10), one-level planet carrier (11) and one-level sun gear (13).

3. The novel hydraulic excavator walking speed reducer structure of claim 2, characterized in that: the three-stage planet carrier (5) is connected with the fixed shell (1) through a plurality of fixing bolts (2).

4. The novel hydraulic excavator walking speed reducer structure of claim 2, characterized in that: the inner ring of the bearing (15) is provided with a thrust plug (14), the thrust plug (14) is fixed on the end cover, and the primary sun gear (13) is axially limited by the thrust plug (14).

5. The novel hydraulic excavator walking speed reducer structure of claim 2, characterized in that: be equipped with gasket III (6) between tertiary planet carrier (5) and tertiary sun gear (7), be equipped with gasket II (9) between tertiary sun gear (7) and second grade sun gear (10), be equipped with gasket I (12) between second grade sun gear (10) and one-level sun gear (13).

6. The novel hydraulic excavator walking speed reducer structure of claim 1, characterized in that: the gasket is made of resin.

Technical Field

The invention relates to the technical field of engineering machinery transmission devices, in particular to a novel walking speed reducer structure of a hydraulic excavator.

Background

The hydraulic excavator is an engineering machine which uses a bucket to excavate materials higher or lower than a bearing surface and loads the materials into a transport vehicle or unloads the materials to a stockyard, firstly, the operation environment is severe, a walking speed reducer is mostly in a high-dust, soaking or humid environment, the maintenance frequency of a floating oil seal is high, and the traditional structure can finish the replacement of the floating oil seal by a special tool or destructive operation; secondly, the walking speed reducer is various in working postures and is provided with various working machines, so that the walking speed reducer is subjected to large axial load, the main bearing locking structure is invalid, and the walking speed reducer leaks oil and even cannot work; finally, when the hydraulic excavator works in a stone mine, the end cover of the walking speed reducer is impacted by a foreign object and deformed, so that the wheel train is sintered.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a novel hydraulic excavator walking speed reducer structure with simple structure and good effect.

The invention is realized by the following technical scheme: a novel walking speed reducer structure of a hydraulic excavator comprises a fixed shell and an end cover, wherein a plurality of stages of planetary gear structures are arranged between the fixed shell and the end cover, one end close to the fixed shell is an output end planetary gear structure, the other end close to the end cover is an input end planetary gear structure, an output end planet carrier of the output end planetary gear structure is connected with the fixed shell through a fixing bolt, a main bearing in contact with the output end planet carrier is arranged on the fixed shell, and an adjusting pad is arranged between the main bearing and the output end planet carrier; a bearing is arranged between the end cover and an input end sun gear of the input end planetary gear structure; high-temperature-resistant and wear-resistant gaskets are arranged between all stages of planetary gear structures.

It further comprises the following steps: and a three-stage planetary gear structure is arranged between the fixed shell and the end cover and comprises a three-stage planet carrier, a three-stage sun gear, a two-stage planet carrier, a two-stage sun gear, a one-stage planet carrier and a one-stage sun gear.

And the three-stage planet carrier is connected with the fixed shell through a plurality of fixing bolts.

The inner ring of the bearing is provided with a thrust plug which is fixed on the end cover, and the primary sun gear is axially limited by the thrust plug.

Be equipped with gasket III between tertiary planet carrier and the tertiary sun gear, be equipped with gasket II between tertiary sun gear and the second grade sun gear, be equipped with gasket I between second grade sun gear and the one-level sun gear.

The gasket is made of resin.

The invention has the following advantages: according to the walking speed reducer structure of the hydraulic excavator, the pretightening force of the bearing is adjusted through the adjusting pad, so that structural damage caused by the adoption of a special tool or destructive operation during replacement of the floating oil seal can be avoided; the specifications and the number of the fixing bolts are adjusted, so that multi-working-condition loads can be met, the service life of the walking speed reducer is greatly prolonged, and the fault rate of the whole machine is reduced; the high-temperature-resistant and wear-resistant resin material gaskets are arranged between the speed difference components in the gear train, so that the deformation of the end cover can be effectively absorbed to prevent the gear train from sintering, and meanwhile, the bearing structure is arranged between the input-stage sun gear and the end cover, so that the abrasion, noise and the like caused by the speed difference can be compensated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

in the figure: 1. a stationary housing; 2. Fixing the bolt; 3. A main bearing; 4. an adjustment pad; 5. A third-stage planet carrier; 6. a gasket III; 7. a third-stage sun gear; 8. a secondary planet carrier; 9. a gasket II; 10. a secondary sun gear; 11. a primary planet carrier; 12. a gasket I; 13. a primary sun gear; 14. a thrust plug; 15. and a bearing.

Detailed Description

The novel walking speed reducer structure of the hydraulic excavator shown in fig. 1 comprises a fixed shell 1 and an end cover, wherein a plurality of stages of planetary gear structures are arranged between the fixed shell 1 and the end cover, an output end planetary gear structure is arranged at one end close to the fixed shell 1, an input end planetary gear structure is arranged at one end close to the end cover, an output end planet carrier of the output end planetary gear structure is connected with the fixed shell 1 through a fixing bolt 2, a main bearing 3 which is in contact with the output end planet carrier is arranged on the fixed shell 1, and an adjusting pad 4 is arranged between the main bearing 3 and the output end planet carrier; a bearing 15 is arranged between the end cover and an input end sun gear of the input end planetary gear structure; high-temperature-resistant and wear-resistant gaskets are arranged between all stages of planetary gear structures. The walking speed reducer structure of the hydraulic excavator adopts a multi-stage planetary speed reducing mechanism, the speed reducer structure is from an end cover to a fixed shell and respectively comprises an input end to an output end, a planet carrier of the output end is fixed on the fixed shell through a plurality of fixing bolts, a floating oil seal is convenient to replace in the later period, a larger axial load can be borne, a main bearing in contact with the planet carrier of the output end is arranged on the fixed shell, an adjusting pad is arranged between the main bearing and the planet carrier of the output end, the manufacturing deviation is compensated through the adjusting pad, and the requirement of the pretightening; when the adjustable walking speed reducer is used, the specification and the number of the fixing bolts can be adjusted according to the axial load of the walking speed reducer, so that the multi-working-condition load is met, the service life of the walking speed reducer is greatly prolonged, and the fault rate of the whole machine is reduced; a bearing is arranged between the end cover and the input end sun gear, so that abrasion, noise and the like caused by speed difference can be made up; high-temperature-resistant and wear-resistant gaskets are adopted between speed difference components in the wheel train, so that the deformation of the end cover can be effectively absorbed to prevent the wheel train from sintering.

As shown in fig. 1, a novel hydraulic excavator walking speed reducer structure is provided with a three-stage planetary gear structure between a fixed casing 1 and an end cover, and comprises a three-stage planet carrier 5, a three-stage sun gear 7, a two-stage planet carrier 8, a two-stage sun gear 10, a one-stage planet carrier 11 and a one-stage sun gear 13. The third-stage planet carrier 5 is connected with the fixed shell 1 through a plurality of fixing bolts 2. Be equipped with gasket III 6 between tertiary planet carrier 5 and the tertiary sun gear 7, be equipped with gasket II 9 between tertiary sun gear 7 and the second grade sun gear 10, be equipped with gasket I12 between second grade sun gear 10 and the one-level sun gear 13. The gasket is made of resin. The hydraulic excavator walking speed reducer structure adopts a three-level planetary speed reducer structure, gaskets III, II and I are respectively arranged between a three-level planet carrier and a three-level sun gear, between the three-level sun gear and a two-level sun gear and between the two-level sun gear and the one-level sun gear, and the gaskets III, II and I are made of high-temperature-resistant and wear-resistant resin materials, so that the sintering of the one-level sun gear and the two-level sun gear, the sintering of the two-level sun gear and the three-level sun gear and the sintering of the three-level sun gear and the three-level planet carrier, which are caused by the fact that the walking speed reducer is subjected to large axial force, can be effectively avoided.

As shown in fig. 1, in the novel walking speed reducer structure of the hydraulic excavator, a thrust plug 14 is arranged on an inner ring of the bearing 15, the thrust plug 14 is fixed on an end cover, and the primary sun gear 13 is axially limited by the thrust plug 14. The end cover of the hydraulic excavator walking speed reducer structure is provided with the thrust plug, the input end sun gear is axially limited by the thrust plug, the input end sun gear is high in rotating speed, the thrust plug is low in rotating speed, when the input end sun gear is in contact with the thrust plug, impurities and noise can be generated due to the speed difference, and due to the fact that the bearing is arranged between the end cover and the input end sun gear, abrasion and noise can be effectively avoided, and impurities or sintering caused by relative movement can also be avoided.