CN105387072A - Structure capable of replacing rolling bearing for hydraulic motor - Google Patents
Structure capable of replacing rolling bearing for hydraulic motor Download PDFInfo
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- CN105387072A CN105387072A CN201510704013.1A CN201510704013A CN105387072A CN 105387072 A CN105387072 A CN 105387072A CN 201510704013 A CN201510704013 A CN 201510704013A CN 105387072 A CN105387072 A CN 105387072A
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- oil
- hole
- transmission shaft
- hydraulic motor
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- Hydraulic Motors (AREA)
- Rolling Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a structure capable of replacing a rolling bearing for a hydraulic motor. Grooves provided with double-lip framework oil seals and circlips for holes are machined in inner holes of the small-diameter section of left (right) side oil distribution discs. A transmission shaft installation hole is machined to be an axial straight hole with the section shape shown in the graph 4 in the specification drawing and is straightly communicated with counter holes in the right (left) sides of the framework oil seals. Annular grooves used for sealing of O-shaped rings and nylon baffle rings are machined in the jointing faces of the oil distribution discs and a rotor. Low-pressure oil is led to the transmission shaft installation hole through thin and long radial straight holes in the tops of the oil distribution discs so that the part between the installation hole and a journal of the rotor is filled with a liquid medium. Compared with a traditional hydraulic motor, a rolling bearing, a bearing cover and a bolt are omitted, cost is saved, assembly is convenient, surface abrasion of the friction surface of the journal of the rotor is relieved, the bearing capability is high, the radial size is small, an oil film formed during operation has the vibration absorbing and impact relieving capability, the working conditions of the hydraulic motor are met, and the service life of the hydraulic motor is prolonged.
Description
Technical field
The invention belongs to oil hydraulic motor field, particularly a kind of oil hydraulic motor structure of alternative rolling bearing.
Background technique
Oil hydraulic motor is as the executive component of Hydraulic Power Transmission System, have the following advantages: structure is simple, compact dimensions, smooth running noise is low, flow and torque ripple little, low-speed performance is better, and specific power is large, be easy to the stepless change realized in a big way, quick and shock-free speed change and commutation can be realized.In currently available technology, oil hydraulic motor is mostly by roller bearings axle journal, needs to rely on the interference fit of motor oil distribution casing bearing hole and housing washer to enter in bearing hole by rolling bearing pressing during assembling, adds operation and cost, reduces manufacturing efficiency.Rolling bearing leans on the rotation of rolling element to carry out support rotating axle in addition, its radial dimension, vibration & noise are larger, price is also higher, simultaneously cause its life-span shorter because the wear resistance of rolling bearing rolling element is poor, need in using process to change continually, and then have impact on the utilization efficiency of equipment, the increase of radial-play when also causing motor operation of simultaneously wearing and tearing continually, affects safe operation and the working life of oil hydraulic motor.Therefore the present invention proposes one and has that bearing capacity is high, radial dimension is little, good anti-vibration, and stable working is reliable, and noise is little, the structure of the alternative rolling bearing that the life-span is long.
Summary of the invention
The object of the invention is the structure providing a kind of oil hydraulic motor with alternative rolling bearing, can be implemented in when not using rolling bearing, meets the usage requirement of the support of transmission shaft, lubrication and oil hydraulic motor.
For achieving the above object, the invention provides the structure of a kind of oil hydraulic motor with alternative rolling bearing, it comprises: the reduced diameter section endoporus of left (right side) side oil distribution casing is processed with the groove installing Double-lip framework oil sealing and circlip for hole, transmission shaft mounting hole is processed into sectional shape axial straight hole as shown in Figure 4, the straight-through outside framework oil seal right side (left side) side counterbore; Left and right sides oil distribution casing and rotor engagement face are processed with annular groove, and inner employing O type circle and nylon retaining ring sealing, oil distribution casing top is processed with elongated radial straight hole and leads to transmission shaft mounting hole.
Preferably, in technique scheme, transmission shaft mounting hole is processed into sectional shape axial straight hole as shown in Figure 4.
Preferably, in technique scheme, left and right oil distribution casing material is carbon constructional quality steel 45 steel, and the material of axle is low hardenability Hardened And Tempered Steel 40Cr.
Preferably, in technique scheme, sectional shape mounting hole as shown in Figure 4, wherein larger circular hole is of a size of
mm, less arc size is R2.5mm and is 5.7mm apart from mounting hole center of circle fore-and-aft distance, and support, lubrication section transmission shaft are of a size of
mm.
Preferably, in technique scheme, the size of the corresponding transmission shaft of outside framework oil seal section
js6 (± 0.0055) mm, surface roughness Ra is between 0.1 and 0.32, and this section of axle needs to carry out cutting process.
Preferably, in technique scheme, the reduced diameter section endoporus of left (right side) side oil distribution casing is provided with Double-lip framework oil sealing and circlip for hole.
Preferably, in technique scheme, be processed with the annular groove of del in the forward position, middle part of left (right side) side oil distribution casing Double-lip framework oil sealing cylindrical hole, be convenient to cylindrical hole and smear press-fiting of lubricating grease back skeleton oil sealing; Be processed with the cylindric counterbore of side with fillet in the below of outside framework oil seal cylindrical hole, be convenient to the introducing of low pressure oil and the lubrication of outside framework oil seal.
Compared with prior art, the present invention has following beneficial effect: under the usage requirement meeting oil hydraulic motor, according to hydrldynamic pressure lubrication formation basic theory, transmission shaft mounting hole is processed into the function with radial sliding bearing bearing shell, the reduced diameter section endoporus of left (right side) side oil distribution casing installs Double-lip framework oil sealing and circlip for hole carries out sealing and locating.This eliminate the original rolling bearing of oil hydraulic motor, decrease assembly process and cost, improve manufacturing efficiency and oil hydraulic motor absorption vibration, relax the ability of impacting, extend the working life of motor, to the marketing of oil hydraulic motor, there is positive effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil hydraulic motor, and Fig. 2 is the structural representation of left side oil distribution casing, and Fig. 3 is the A-A sectional view of Fig. 2, and Fig. 4 is that the K of Fig. 3 is to partial view.
Main Reference Numerals illustrates:
Circlip for hole 1,10 in Fig. 1, Double-lip framework oil sealing 2,9, O type circle 4,7, nylon back-up ring 5,6, transmission shaft 11, left side oil distribution casing 3 and low pressure oil duct 100, right side oil distribution casing 8 and low pressure oil duct 200.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
As shown in Figure 1, according to a kind of oil hydraulic motor of specific embodiment of the invention structure with alternative rolling bearing, it comprises: the reduced diameter section endoporus of left (right side) side oil distribution casing is processed with the groove installing Double-lip framework oil sealing 2 (9) and circlip for hole 1 (10), transmission shaft 11 mounting hole is processed into sectional shape axial straight hole as shown in Figure 4, straight-through outside framework oil seal 2 (9) right (left side) side counterbore; Left (right side) side oil distribution casing 3 (8) is processed with annular groove with rotor engagement face, the inner O of employing type circle 4 (7) and nylon back-up ring 5 (6) seal, and oil distribution casing 3 (8) top is processed with elongated straight hole 100 (200) and leads to transmission shaft 11 mounting hole.Sectional shape transmission shaft mounting hole as shown in Figure 4, its surface roughness Ra≤0.4, wherein larger circular hole is of a size of
mm, less arc size is R2.5mm and is 5.7mm apart from mounting hole center of circle fore-and-aft distance, and corresponding surface roughness Ra≤0.1 supporting, lubricate section axle, is of a size of
mm, so surface roughness Ra≤0.4 of the friction pair of mounting hole and axle journal formation, in clearance fit state.When oil hydraulic motor works, the radial straight hole 100 (200) in left oil distribution casing 3 (8) top, (right side) side accesses low pressure oil, make to be full of liquid medium in the gap that forms between transmission shaft 11 mounting hole and rotor journal, mounting hole serves the effect of sliding bearing inner ring bearing shell.Filling and the Spielpassung of liquid medium make mounting hole be separated with rotor journal and direct contact does not occur, and reduce the two frictional loss and its surface abrasion; The oil film that during operation, liquid medium is formed has vibration-absorbing denoising ability, thus makes oil hydraulic motor stable working, reliable, noiseless, achieves the long lifetime safe operation of oil hydraulic motor and ensures its utilization efficiency.The reduced diameter section endoporus of left (right side) side oil distribution casing 3 (8) is provided with Double-lip framework oil sealing 2 (9) and circlip for hole 1 (10), outside framework oil seal is used for seal fluid medium and leaks, wherein secondary lip plays dustproof effect, can prevent extraneous dust, impurity etc. from entering motor internal; Circlip for hole 1 (10) can fix the axial position of outside framework oil seal 2 (9), prevents its play.
Claims (8)
1. an oil hydraulic motor structure for alternative rolling bearing, mainly comprises: the reduced diameter section endoporus of left (right side) side oil distribution casing is provided with Double-lip framework oil sealing and circlip for hole; Transmission shaft mounting hole is processed into the axial straight hole of sectional shape as shown in Fig. 4 in Figure of description, the straight-through outside framework oil seal right side (left side) side counterbore; Left and right sides oil distribution casing and rotor engagement face are processed with annular groove, and inner employing O type circle and nylon retaining ring sealing, oil distribution casing top is processed with elongated radial straight hole and leads to transmission shaft mounting hole.
2. structure according to claim 1, is characterized in that: transmission shaft mounting hole is processed into the axial straight hole of sectional shape as shown in Fig. 4 in Figure of description.
3. structure according to claim 1, is characterized in that: surface roughness Ra≤0.4 of transmission shaft mounting hole, corresponding surface roughness Ra≤0.1 supporting, lubricate section axle.
4. structure according to claim 1, is characterized in that: left and right oil distribution casing material is carbon constructional quality steel 45 steel, and the material of axle is low hardenability Hardened And Tempered Steel 40Cr.
5. structure according to claim 1, is characterized in that: the circular hole that transmission shaft mounting hole is wherein larger is of a size of
mm, less arc size is R2.5mm and is 5.7mm apart from mounting hole center of circle fore-and-aft distance, and support, lubrication section transmission shaft are of a size of
mm.
6. structure according to claim 1, is characterized in that: the corresponding transmission shaft of outside framework oil seal section is of a size of
js6 (± 0.0055) mm, surface roughness Ra is between 0.1 and 0.32, and this section of axle needs to carry out cutting process.
7. structure according to claim 1, is characterized in that: the reduced diameter section endoporus of left (right side) side oil distribution casing is provided with Double-lip framework oil sealing and circlip for hole.
8. structure according to claim 1, is characterized in that: the annular groove being processed with del in the forward position, middle part of left (right side) side oil distribution casing Double-lip framework oil sealing cylindrical hole, is convenient to cylindrical hole and smears press-fiting of lubricating grease back skeleton oil sealing; Be processed with the cylindric counterbore of side with fillet in the below of outside framework oil seal cylindrical hole, be convenient to the introducing of low pressure oil and the lubrication of outside framework oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704013.1A CN105387072B (en) | 2015-10-27 | 2015-10-27 | A kind of structure of the alternative rolling bearing of hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704013.1A CN105387072B (en) | 2015-10-27 | 2015-10-27 | A kind of structure of the alternative rolling bearing of hydraulic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105387072A true CN105387072A (en) | 2016-03-09 |
| CN105387072B CN105387072B (en) | 2018-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510704013.1A Expired - Fee Related CN105387072B (en) | 2015-10-27 | 2015-10-27 | A kind of structure of the alternative rolling bearing of hydraulic motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN105387072B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112269305A (en) * | 2020-11-13 | 2021-01-26 | 衡阳和乐办公设备有限公司 | Universal photosensitive drum driving assembly |
| CN114151444A (en) * | 2021-11-15 | 2022-03-08 | 西安航天精密机电研究所 | Grouping processing and matching method for liquid floating gyro shaft tip and bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4753311A (en) * | 1985-09-06 | 1988-06-28 | Bauakademie Der Deutschen Demokratischen Republik | Hydrostatic translation slide support |
| CN1063747A (en) * | 1990-08-24 | 1992-08-19 | 罗素·D·艾迪 | The self-aligning bearing of beam is housed and comprises assembly with the bearing of spline structure and axle |
| CN101091932A (en) * | 2007-07-05 | 2007-12-26 | 贵州优利斯凯机械有限公司 | Vertical shaft support system of vertical shaft type impact crusher, and vertical shaft support device |
| CN101344067A (en) * | 2008-08-22 | 2009-01-14 | 哈尔滨工业大学 | Oil distribution disk and continuous slewing electro-hydraulic servo motor using the same |
| CN102809486A (en) * | 2012-08-09 | 2012-12-05 | 浙江传媒学院 | Driving mechanism of mute life testing machine of rolling bearing |
| CN204660666U (en) * | 2015-04-08 | 2015-09-23 | 青岛正大正电力环保设备有限公司 | A kind of external holder sprocket wheel |
-
2015
- 2015-10-27 CN CN201510704013.1A patent/CN105387072B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4753311A (en) * | 1985-09-06 | 1988-06-28 | Bauakademie Der Deutschen Demokratischen Republik | Hydrostatic translation slide support |
| CN1063747A (en) * | 1990-08-24 | 1992-08-19 | 罗素·D·艾迪 | The self-aligning bearing of beam is housed and comprises assembly with the bearing of spline structure and axle |
| CN101091932A (en) * | 2007-07-05 | 2007-12-26 | 贵州优利斯凯机械有限公司 | Vertical shaft support system of vertical shaft type impact crusher, and vertical shaft support device |
| CN101344067A (en) * | 2008-08-22 | 2009-01-14 | 哈尔滨工业大学 | Oil distribution disk and continuous slewing electro-hydraulic servo motor using the same |
| CN102809486A (en) * | 2012-08-09 | 2012-12-05 | 浙江传媒学院 | Driving mechanism of mute life testing machine of rolling bearing |
| CN204660666U (en) * | 2015-04-08 | 2015-09-23 | 青岛正大正电力环保设备有限公司 | A kind of external holder sprocket wheel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112269305A (en) * | 2020-11-13 | 2021-01-26 | 衡阳和乐办公设备有限公司 | Universal photosensitive drum driving assembly |
| CN112269305B (en) * | 2020-11-13 | 2023-04-14 | 珠海好印宝打印耗材有限公司 | Universal photosensitive drum driving assembly |
| CN114151444A (en) * | 2021-11-15 | 2022-03-08 | 西安航天精密机电研究所 | Grouping processing and matching method for liquid floating gyro shaft tip and bearing |
| CN114151444B (en) * | 2021-11-15 | 2023-10-20 | 西安航天精密机电研究所 | Grouping processing and selecting method for shaft tip and bearing of liquid floating gyroscope |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105387072B (en) | 2018-08-14 |
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Granted publication date: 20180814 Termination date: 20191027 |