CN210661299U - Loader gearbox steering pump power take-off spline lubricating structure - Google Patents
Loader gearbox steering pump power take-off spline lubricating structure Download PDFInfo
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- CN210661299U CN210661299U CN201920916194.8U CN201920916194U CN210661299U CN 210661299 U CN210661299 U CN 210661299U CN 201920916194 U CN201920916194 U CN 201920916194U CN 210661299 U CN210661299 U CN 210661299U
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Abstract
The utility model discloses a loader gearbox steering pump power take-off spline lubricating structure, which comprises a shell, a left bearing, a steering pump shaft gear, a box body, a right bearing and a spacer bush; the left side and the right side of the steering pump shaft gear are respectively provided with a left bearing and a right bearing, the left bearing is matched with the shell hole, and the right bearing is matched with the box body hole through a spacer bush, so that the steering pump shaft gear is fixed; the inner hole of the steering pump shaft gear is provided with a spiral oil groove, so that oil mist in the inner cavity of the gearbox flows to the spline of the steering pump shaft gear along the spiral oil groove to lubricate and cool the spline, and secondary lubrication and cooling of the bearing are realized through gaps among the splines. The utility model provides an among the prior art because of loader gearbox steering pump power take-off spline arouses spline wearing and tearing because of lubricated not enough, damage to lead to the loader to turn to the problem that hydraulic system pressure is low and the unstability leads to the fact the loader can't turn to and influence the normal work of gearbox indirectly.
Description
Technical Field
The utility model relates to a loader gearbox lubricating structure, concretely relates to loader gearbox steering pump power take-off spline lubricating structure, specially adapted 5 tons of wheeled loader gearbox steering pump power take-off mouthful department structure.
Background
At present, a common planetary gearbox is generally adopted in domestic 5T loaders, the structure of a power take-off port mainly comprises a driving shaft and bearings at two ends, and as the power take-off port is positioned at the top of the gearbox, all parts are lubricated mainly by means of splashing of lubricating oil and oil mist lubrication caused by the operation of gear parts. The steering pump shaft gear is used as a part in the gearbox, plays a power transmission role in the steering of the whole machine, one end of the steering pump shaft gear is connected with the transfer gear of the torque converter through the gear and is used as power input, and the other end of the steering pump shaft gear is connected with the steering pump in a spline mode to drive the steering pump to operate and provide pressure oil for a steering hydraulic system of the loader. The existing defects are that: due to the fact that the spline of the steering pump shaft gear is high in position and poor in lubrication, under the condition of no lubrication or insufficient lubrication, spline abrasion is aggravated and damage is caused, normal work of the steering pump is seriously affected, and faults of low working pressure, heavy driving direction and the like of a steering hydraulic system of the loader are caused.
Disclosure of Invention
The utility model aims at overcoming above-mentioned defect, provide a simple structure, preparation and maintenance cost are low, lubricated effectual, equipment long service life's loader gearbox steering pump power of getting mouthful spline lubricating structure, solve among the prior art loader gearbox steering pump power of getting mouthful spline because of lubricated not enough arouse spline wearing and tearing, damage to lead to the loader to turn to hydraulic system pressure low and the shakiness problem that leads to the loader can't turn to and influence the normal work of gearbox indirectly.
In order to achieve the purpose, the utility model discloses loader gearbox steering pump power take-off spline lubrication structure casing, left bearing, steering pump shaft gear, box, right bearing and spacer; the left side and the right side of the steering pump shaft gear are respectively provided with a left bearing and a right bearing, the left bearing is matched with the shell hole, and the right bearing is matched with the box body hole through a spacer bush, so that the steering pump shaft gear is fixed; the inner hole of the steering pump shaft gear is provided with a spiral oil groove, so that oil mist in the inner cavity of the gearbox flows to the spline of the steering pump shaft gear along the spiral oil groove to lubricate and cool the spline, and secondary lubrication and cooling of the bearing are realized through gaps among the splines.
Above-mentioned loader gearbox steering pump power take-off mouth spline lubricating structure improves steering pump shaft gear through on the basis of current loader gearbox steering pump power take-off mouth structure, increases spiral oil groove in its inner bore department. In the working process of the gearbox, because the inner cavity of the gearbox running at a high speed is full of oil mist, the steering pump shaft gear rotates clockwise at a high speed, the oil mist in the inner cavity flows to the spline of the steering pump along the spiral oil groove, the rotating speed is higher, the flow is higher, the pump flow effect is better, and therefore the spline of the steering pump shaft gear is lubricated and cooled, the lubricated oil flows through the gap between the splines to realize secondary lubrication of the bearing, and finally flows back to the box body through the bearing. Besides the technical characteristics, the method also has the following beneficial effects:
1. the spline of the power take-off port is lubricated, so that the abrasion of the spline can be reduced, the service lives of a steering pump shaft gear and the spline of a steering pump are prolonged, and the reliability of a gearbox is improved;
2. the spline of the power take-off port is lubricated additionally, heat generated by friction at part can be taken away through oil, the temperature at the spline of the driving shaft of the power take-off port is reduced, the working efficiency of a steering pump is ensured, energy is saved, and the service life of each system is prolonged;
3. increase helical oil groove lubricating structure and can not only lubricate the spline, cool off, can increase the lubricated oil mass of bearing simultaneously, take away more bearing heats, guarantee the use of bearing, reduce the bearing trouble to indirect spline life that improves.
By adopting the lubricating structure for the power take-off spline of the steering pump of the gearbox of the loader, the problem that the loader cannot steer due to the fact that the spline is abraded and damaged due to insufficient lubrication of the power take-off spline of the steering pump of the gearbox of the loader in the prior art and the pressure of a steering hydraulic system of the loader is low and unstable can be solved, meanwhile, the service lives of the steering pump and a bearing can be prolonged, and the three-pack service cost of a product is reduced.
Drawings
Fig. 1 is the main schematic cross-sectional view of the power take-off spline lubrication structure of the loader gearbox steering pump of the present invention.
Reference numerals: the steering pump comprises a shell 1, a left bearing 2, a steering pump shaft gear 3, a box body 4, a right bearing 5, a spacer bush 6 and a spiral oil groove 7.
Detailed Description
The following provides a further detailed description of the power take-off spline lubrication structure of the loader gearbox steering pump according to the present invention with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1, the power take-off spline lubricating structure of the loader gearbox steering pump of the present invention comprises a housing 1, a left bearing 2, a steering pump shaft gear 3, a box body 4, a right bearing 5 and a spacer 6; the left side and the right side of the steering pump shaft gear 3 are respectively provided with a left bearing 2 and a right bearing 5, the left bearing 2 is matched with a hole of the shell 1, and the right bearing 5 is matched with a hole of the box body 5 through a spacer 6, so that the steering pump shaft gear 3 is fixed; the inner hole of the steering pump shaft gear 3 is provided with a spiral oil groove 7, so that oil mist in the inner cavity of the gearbox flows to the spline of the steering pump shaft gear 3 along the spiral oil groove 7 to lubricate and cool the spline, and secondary lubrication and cooling of the bearing 5 are realized through gaps among the splines.
In the working process, because the inner cavity of the gearbox running at a high speed is full of oil mist, the steering pump shaft gear 3 rotates clockwise at a high speed, the oil mist in the inner cavity flows to the spline of the steering pump shaft gear 3 along the spiral oil groove 7, the higher the rotating speed is, the better the pump flow effect is, the larger the flow is, thereby realizing the lubrication and cooling of the spline of the steering pump shaft gear 3, the lubricated oil passes through the gap between the splines, realizes the secondary lubrication and cooling of the bearing 5, and finally flows back to the box body 4 through the bearing 5.
Claims (1)
1. A loader gearbox steering pump power take-off spline lubricating structure comprises a shell, a left bearing, a steering pump shaft gear, a box body, a right bearing and a spacer bush, wherein the left bearing is arranged on the shell; the left side and the right side of the steering pump shaft gear are respectively provided with a left bearing and a right bearing, the left bearing is matched with the shell hole, and the right bearing is matched with the box body hole through a spacer bush, so that the steering pump shaft gear is fixed; the method is characterized in that: the inner hole of the steering pump shaft gear is provided with a spiral oil groove, so that oil mist in the inner cavity of the gearbox flows to the spline of the steering pump shaft gear along the spiral oil groove to lubricate and cool the spline, and secondary lubrication and cooling of the bearing are realized through gaps among the splines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916194.8U CN210661299U (en) | 2019-06-18 | 2019-06-18 | Loader gearbox steering pump power take-off spline lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920916194.8U CN210661299U (en) | 2019-06-18 | 2019-06-18 | Loader gearbox steering pump power take-off spline lubricating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210661299U true CN210661299U (en) | 2020-06-02 |
Family
ID=70842273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920916194.8U Active CN210661299U (en) | 2019-06-18 | 2019-06-18 | Loader gearbox steering pump power take-off spline lubricating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210661299U (en) |
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2019
- 2019-06-18 CN CN201920916194.8U patent/CN210661299U/en active Active
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