CN201461719U - Wear-resistant hydraulic motor crankshaft structure - Google Patents
Wear-resistant hydraulic motor crankshaft structure Download PDFInfo
- Publication number
- CN201461719U CN201461719U CN2009200619641U CN200920061964U CN201461719U CN 201461719 U CN201461719 U CN 201461719U CN 2009200619641 U CN2009200619641 U CN 2009200619641U CN 200920061964 U CN200920061964 U CN 200920061964U CN 201461719 U CN201461719 U CN 201461719U
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- CN
- China
- Prior art keywords
- hydraulic motor
- wear
- bent axle
- bearing housing
- crankshaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a wear-resistant hydraulic motor crankshaft structure. A crank part is arranged on the crankshaft of a motor. The crank part is a smooth cylindrical shaft neck. A plurality of pin rollers are evenly arranged on the cylindrical shaft neck. The direction of the cylindrical axis of the pin rollers is as the same as the direction of the cylindrical shaft neck of the crankshaft. A bearing sleeve is supported on the pin rollers evenly distributed on the crank part. Two annular grooves are respectively arranged at the inner holes of the bearing sleeve close to openings at the two ends. A thrust bearing washer and an elastic collar are installed on each annular groove. The utility model has the advantages that the structure is simple and reasonable, the production cost is relatively low and the wear resistance is good.
Description
Technical field
The utility model relates to a kind of wear-resisting formula oil hydraulic motor crankshaft structure.
Background technique
The MRC type low speed high torque hydraulic motor of existing domestic production, its bent axle are to adopt monolithic construction, and the eccentric sphere at the crank throw place on the bent axle directly cooperates contact seal with the inner ball surface of motor oscillating oil cylinder; When oil hydraulic motor turns round, in-oil cylinder high-pressure and hydraulic oil promotes bent axle and rotates acting, in the bent axle rotation process, the eccentric sphere at crankshaft crank place and the inner ball surface of oscillating oil cylinder produce sliding friction, therefore, motor operations is after a period of time, wear and tear easily in the sphere contacting point of two parts, behind the sphere abrasion, in-oil cylinder high pressure can produce leakage, thereby reduce the working pressure and the volumetric efficiency of oil hydraulic motor, and then cause motor failure to lose efficacy.
In order to slow down the wearing and tearing that take place owing to sliding friction between bent axle sphere and the oscillating oil cylinder, the general molybdenum spray technology that adopts is handled on the crankshaft eccentric sphere of the MRC type low speed high torque hydraulic motor of big discharge capacity.But, thereby increased the manufacture cost of big discharge capacity MRC type oil hydraulic motor greatly because this process of surface treatment cost is higher.
The model utility content
The purpose of this utility model is to solve above-mentioned MRC type low speed high torque hydraulic motor crankshaft eccentric sphere contacts serious wear between the inner ball surface with oscillating oil cylinder problem, and provide a kind of simple and reasonable for structure, the wear-resisting formula oil hydraulic motor crankshaft structure that cost of production is cheap relatively.
The purpose of this utility model is achieved in that
A kind of wear-resisting formula oil hydraulic motor crankshaft structure, the bent axle of motor is provided with the crank throw position, described crank throw position is smooth cylindrical journal, evenly distributed on the cylindrical journal have a plurality of rollers, and the cylinder axis direction of roller is identical with the cylindrical journal of bent axle, on the roller that is evenly distributed on the crank throw position, the endoporus of bearing housing respectively has an annular groove near the both ends open place to one bearing housing, and thrust-bearing packing ring and circlip are installed on each annular groove by support.
The purpose of this utility model can also adopt following technical measures to solve:
As scheme more specifically, described roller is packed between the cylindrical journal of circular hole and bent axle in the bearing housing in the formed ring-shaped cylinder space.
The beneficial effects of the utility model are:
(1) the wear-resisting formula oil hydraulic motor of the utility model crankshaft structure can slow down the crankshaft eccentric sphere contacts inner ball surface with oscillating oil cylinder wear phenomenon effectively, guarantees the sealability of MRC type oil hydraulic motor, improves the low-speed stability of MRC type oil hydraulic motor; Have, the molybdenum spray technology of the big displacement motor crankshaft crank of traditional MRC type sphere has been saved in the design of this kind of motor crankshaft structure, has reduced cost of production, applies easily in actual production again.
Description of drawings
Fig. 1 is the schematic representation of the wear-resisting formula oil hydraulic motor of the utility model crankshaft structure;
Fig. 2 is the generalized section at the utility model bent axle sphere place.
Embodiment
As depicted in figs. 1 and 2, a kind of wear-resisting formula oil hydraulic motor crankshaft structure, the bent axle 1 of motor is provided with crank throw position 11, described crank throw position 11 is smooth cylindrical journal, evenly distributed on the cylindrical journal have a plurality of rollers 2, and the cylinder axis direction of roller 2 is identical with the cylindrical journal of bent axle, one bearing housing 3 by support on the roller 2 that is evenly distributed on the crank throw position, the endoporus of bearing housing 3 respectively has an annular groove near the both ends open place, and thrust-bearing packing ring 4 and circlip 5 are installed on each annular groove.
Described roller 2 is packed between the cylindrical journal of circular holes and bent axle 1 in the bearing housing 3 in the formed ring-shaped cylinder space.
Before MRC type low speed high torque hydraulic motor is installed, need install in advance the new type crank among Fig. 1; At first, bearing housing 3 is packed into bent axle 1 to the crank throw position, pack at the annular groove place of bearing housing 3 endoporus one end then a thrust-bearing packing ring 4 and a circlip 5, then, roller 2 is packed between the cylindrical journal of circular holes and bent axle 1 in the bearing housing 3 in the formed ring-shaped cylinder space, and attention makes the cylinder axis direction of roller 2 consistent with the cylindrical journal of bent axle 1; At last, in the annular groove of the bearing housing 3 endoporus the other ends, pack into a thrust-bearing packing ring 4 and a circlip 5.Can carry out general assembly to MRC type oil hydraulic motor after finishing the bent axle prepackage.
When the work of MRC type oil hydraulic motor moves, bearing housing 3 produces motion under the effect of the high pressure oil of oil cylinder 6, the power of bearing housing 3 is delivered on the bent axle 1 with the roller 2 that moves through average arrangement, thereby promote bent axle 1 rotation, because roller 2 rolls in the formed ring-shaped cylinder space between the cylindrical journal of circular hole and bent axle 1 in bearing housing 3 in bent axle 1 rotary course all the time, the frictional force that produces when therefore, moving between oil hydraulic motor oil cylinder and the bent axle 1 significantly reduces; In addition, because bearing housing 3 endoporus two ends are equipped with thrust-bearing packing ring 4 and circlip 5, effectively limit roller 2 endwisely slipping in the ring-shaped cylinder space in the motor movement process.Because, the frictional force that produces when moving between oil hydraulic motor oil cylinder and the bent axle 1 has significantly reduced, therefore, this crankshaft structure can effectively slow down the crankshaft eccentric sphere contacts inner ball surface with oscillating oil cylinder wear phenomenon, guarantee the sealability of MRC type oil hydraulic motor, improve the low-speed stability of MRC type oil hydraulic motor; Moreover the molybdenum spray technology of the big displacement motor crankshaft crank of traditional MRC type sphere has been saved in the design of new type crank, has reduced cost of production, is worthy of popularization in actual production.
Claims (2)
1. wear-resisting formula oil hydraulic motor crankshaft structure, the bent axle of motor (1) is provided with crank throw position (11), it is characterized in that, described crank throw position (11) is smooth cylindrical journal, evenly distributed on the cylindrical journal have a plurality of rollers (2), and the cylinder axis direction of roller (2) is identical with the cylindrical journal of bent axle, one bearing housing (3) by support on the roller that is evenly distributed on the crank throw position (2), the endoporus of bearing housing (3) respectively has an annular groove near the both ends open place, and thrust-bearing packing ring (4) and circlip (5) are installed on each annular groove.
2. according to the described wear-resisting formula oil hydraulic motor crankshaft structure of claim 1, it is characterized in that described roller (2) is packed between the cylindrical journal of interior circular hole of bearing housing (3) and bent axle (1) in the formed ring-shaped cylinder space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200619641U CN201461719U (en) | 2009-08-07 | 2009-08-07 | Wear-resistant hydraulic motor crankshaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200619641U CN201461719U (en) | 2009-08-07 | 2009-08-07 | Wear-resistant hydraulic motor crankshaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461719U true CN201461719U (en) | 2010-05-12 |
Family
ID=42389072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200619641U Expired - Fee Related CN201461719U (en) | 2009-08-07 | 2009-08-07 | Wear-resistant hydraulic motor crankshaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461719U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017181907A1 (en) * | 2016-04-19 | 2017-10-26 | 佛山市顺德区中意液压有限公司 | Medium-speed high-torque radial piston hydraulic motor |
| CN111022479A (en) * | 2019-11-22 | 2020-04-17 | 宁波斯达弗液压传动有限公司 | Low-fault crankshaft assembly and assembling method |
| WO2022151548A1 (en) * | 2021-01-18 | 2022-07-21 | 宁波斯达弗液压传动有限公司 | Wear-resistant crankshaft structure |
-
2009
- 2009-08-07 CN CN2009200619641U patent/CN201461719U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017181907A1 (en) * | 2016-04-19 | 2017-10-26 | 佛山市顺德区中意液压有限公司 | Medium-speed high-torque radial piston hydraulic motor |
| CN111022479A (en) * | 2019-11-22 | 2020-04-17 | 宁波斯达弗液压传动有限公司 | Low-fault crankshaft assembly and assembling method |
| WO2022151548A1 (en) * | 2021-01-18 | 2022-07-21 | 宁波斯达弗液压传动有限公司 | Wear-resistant crankshaft structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20160807 |