CN114263728A - Double-impeller self-lubricating speed reducer - Google Patents
Double-impeller self-lubricating speed reducer Download PDFInfo
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- CN114263728A CN114263728A CN202210095518.2A CN202210095518A CN114263728A CN 114263728 A CN114263728 A CN 114263728A CN 202210095518 A CN202210095518 A CN 202210095518A CN 114263728 A CN114263728 A CN 114263728A
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Abstract
The invention relates to a speed reduction transmission device. The purpose provides a bilobed wheel self-lubricating speed reducer, and this speed reducer should have sturdy and durable, the operation is stable, lubricated effectual characteristics. The technical scheme is as follows: a double-impeller self-lubricating speed reducer comprises a shell, an input shaft and an output shaft which are rotatably positioned on the shell, and a transmission mechanism for transmitting power between the input shaft and the output shaft; bearing bosses are arranged on the inner walls of the two sides of the shell and comprise an input shaft boss, an output shaft boss and a plurality of transmission shaft bosses; the method is characterized in that: the two sides of the shell are provided with an oil pumping mechanism and an oil distributing mechanism; the oil pumping mechanism comprises a pressing plate and an impeller which are sequentially arranged between an output shaft bearing and an output shaft flange, an oil outlet is formed in the pressing plate, the impeller is fixed with the output shaft, and an oil supply cavity for accommodating the impeller is formed between the pressing plate and the output shaft flange.
Description
Technical Field
The invention relates to a speed reduction transmission device, in particular to a speed reducer.
Background
The existing speed reducer has the following defects: the outside parts such as motor, oil pump, oil pipe that have of speed reducer, the structure is comparatively complicated, and the fault rate is high, and is impaired because of colliding with easily in the use to the staff is difficult to discover the impaired condition, in case these parts do not in time obtain restoreing, can influence the normal supply of speed reducer lubricating oil, causes bearing burnout and gear damage when serious, leads to the speed reducer to scrap. Meanwhile, the rotating speed of the motor is fixed, the oil supply amount of the lubricating oil cannot be adjusted in real time according to the working condition of the speed reducer, and the oil supply amount required when the speed reducer operates at a low rotating speed is obviously large, so that the lubricating oil is easy to leak at the position of the oil seal, and the problem of difficulty in effectively solving is solved.
Disclosure of Invention
The invention aims to overcome the defects in the background technology and provide a double-impeller self-lubricating speed reducer which has the characteristics of firmness, durability, stable operation and good lubricating effect.
The technical scheme of the invention is as follows:
a double-impeller self-lubricating speed reducer comprises a shell, an input shaft and an output shaft which are rotatably positioned on the shell, and a transmission mechanism for transmitting power between the input shaft and the output shaft; bearing bosses are arranged on the inner walls of the two sides of the shell and comprise an input shaft boss, an output shaft boss and a plurality of transmission shaft bosses; the method is characterized in that: the two sides of the shell are provided with an oil pumping mechanism and an oil distributing mechanism;
the oil pumping mechanism comprises a pressing plate and an impeller which are sequentially arranged between an output shaft bearing and an output shaft flange, an oil outlet is formed in the pressing plate, the impeller is fixed with the output shaft, and an oil supply cavity for accommodating the impeller is formed between the pressing plate and the output shaft flange;
the oil distribution mechanism comprises a plurality of oil inlet holes which are sequentially arranged along the power transmission direction of the speed reducer, two ends of each oil inlet hole are respectively communicated with the inner circumferential surfaces of two adjacent bearing bosses, and the oil inlet holes of the output shaft bosses are also communicated with oil outlets of the pressing plates; the impeller is driven by the output shaft to rotate, so that lubricating oil at the bottom of the shell moves to the oil outlet along the circumferential direction of the oil supply cavity, and then flows into the bearing bosses through the oil supply holes in sequence along the opposite direction of power transmission of the speed reducer.
The oil inlet on the right side is higher than the oil inlet on the left side, the oil inlet is higher than the lowest point of the inner circumferential surface of the bearing boss, and the inlet of each oil inlet is higher than the outlet.
The inner diameter of the oil supply cavity is larger than that of the output shaft boss; and an inner hole for the output shaft to pass through is formed in the center of the pressure plate.
The impeller comprises a wheel disc and a plurality of blades; the outer diameter of the wheel disc is larger than the inner diameter of the inner hole, and the outer diameter of the paddle is matched with the inner diameter of the oil supply cavity.
And an oil guide groove is formed in the inner circumferential surface of the output shaft boss, and an oil outlet of the pressing plate is communicated with an oil inlet hole of the output shaft boss through the oil guide groove.
The pressure plate is fixed between the machine shell and the output shaft flange.
The oil outlet is arranged at the upper part of the pressing plate, and the lower part of the pressing plate is also provided with an oil inlet.
The bearing boss comprises an input shaft boss, a first transmission shaft boss, two second transmission shaft bosses and an output shaft boss which are sequentially arranged along the power transmission direction of the speed reducer.
The oil inlet comprises a first oil inlet arranged between the output shaft boss and the second transmission shaft boss positioned above, a second oil inlet arranged between the first transmission shaft boss and the second transmission shaft boss positioned above, and a third oil inlet arranged between the input shaft boss and the first transmission shaft boss.
The oil inlet hole is arranged between the retainer ring of the bearing and the end cover.
The invention has the beneficial effects that:
the invention adopts the built-in double impellers to supply oil, the impellers are driven to work by the self power of the speed reducer, components such as an oil pump, a motor, an oil pipe and the like do not need to be arranged outside the shell, the external structure is simplified, the overall shape is attractive and elegant, the production and maintenance cost is reduced, the work is reliable and durable, the oil supply quantity can be determined according to the rotating speed of the speed reducer, the self-lubrication of the speed reducer is realized, the long-term stable and efficient operation of the speed reducer is ensured, and the service life of the speed reducer is prolonged.
Drawings
Fig. 1 is a schematic top view of the present invention.
Fig. 2 is a schematic front view of the casing, impeller and pressing plate of the present invention.
Fig. 3 is a schematic front view of the housing of the present invention.
Fig. 4 is a schematic top view of the housing of the present invention.
Fig. 5 is a front view schematically showing the structure of the impeller of the present invention.
FIG. 6 is a front view of the platen of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following examples.
A double-impeller self-lubricating speed reducer comprises a shell 1, an input shaft 2, an output shaft 3, a transmission mechanism, an oil pumping mechanism and an oil distributing mechanism.
The input shaft and the output shaft are rotatably positioned on the shell, and the transmission mechanism is used for transmitting power between the input shaft and the output shaft. And the two sides of the shell are respectively provided with an oil pumping mechanism and an oil distributing mechanism, the oil pumping mechanism is driven by the input shaft to pump lubricating oil from the bottom of the shell and convey the lubricating oil to the oil distributing mechanism, and the oil distributing mechanism distributes the lubricating oil to bearings on the two sides of the input shaft and the transmission shafts of the transmission mechanism.
The speed reducer is a parallel speed reducer, and the input shaft, the output shaft and each transmission shaft of the transmission mechanism are arranged in parallel. The transmission mechanism adopts three-stage speed reduction transmission and comprises a first transmission shaft 9.1 and a second transmission shaft 9.2. The first transmission shaft and the first transmission shaft are in one-stage transmission, the first transmission shaft and the two second transmission shafts are in two-stage transmission, and the two third transmission shafts and the output shaft are in three-stage transmission.
The inner walls of the two sides of the shell are respectively provided with a plurality of bearing bosses, the bearing bosses comprise an input shaft boss 1-1, a first transmission shaft boss 1-2, two second transmission shaft bosses 1-3 and an output shaft boss 1-4, and the bearing bosses are sequentially arranged along the power transmission direction of the speed reducer (the direction from left to right in the figure 3) and are connected into a whole.
The input shaft is arranged in the input shaft boss through an input shaft bearing 2-1, the output shaft is arranged in the output shaft boss through an output shaft bearing 3-1, the first transmission shaft is arranged in the first transmission shaft boss through a first transmission shaft bearing 9-11, and the second transmission shaft is arranged in the second transmission shaft boss through a second transmission shaft bearing 9-21. The shell is also provided with end covers for sealing the bearings, and the end covers comprise an input shaft end cover 2-2 matched with the input shaft bearing, a first transmission shaft end cover 9-12 matched with the first transmission shaft bearing, and a second transmission shaft end cover 9-22 matched with the second transmission shaft bearing. And output shaft flanges 3-2 matched with the output shaft bearings are arranged on two sides of the shell.
The oil pumping mechanism comprises a pressure plate 4 and an impeller 5.
The pressure plate is arranged between the output shaft bearing 3-1 and the output shaft flange 3-2, the end faces of two sides of the pressure plate are respectively fixed with the shell and the output shaft flange, a certain distance is kept between the pressure plate and the inner wall of the output shaft flange to form an oil supply cavity A, and the impeller is arranged in the oil supply cavity and fixed with the output shaft. The inner diameter of the oil supply cavity is larger than that of the output shaft boss.
The upper portion of clamp plate is equipped with oil-out 4.1 (this oil-out is close to the second transmission shaft boss of top), and the clamp plate center is equipped with the hole 4.2 that supplies the output shaft to pass through, and the lower part of clamp plate also can be provided with oil inlet 4.3, and the border is equipped with the bolt hole 4.4 of fixing usefulness around the clamp plate. The inner diameter of the inner hole of the pressing plate is smaller than that of the output shaft boss, and the distance from the oil outlet of the pressing plate to the central axis of the output shaft is larger than that of the output shaft boss.
The impeller comprises a wheel disc 5.1 and a plurality of blades 5.2 arranged on the outer circumferential surface of the wheel disc, and a key groove 5.3 connected with an output shaft is further arranged on the wheel disc. The outer diameter of the wheel disc is larger than the inner diameter of the inner hole of the pressure plate, the outer diameter of the paddle is matched with the inner diameter of the oil supply cavity, and the thickness of the impeller is matched with the thickness of the oil supply cavity. The oil inlet, the oil outlet and the distance from the paddle to the central axis of the output shaft are matched.
The lubricant level at the bottom of the inner cavity of the shell is higher than the inner hole of the pressing plate, lubricant can enter the oil supply cavity through the inner hole, and lubricant can also enter the oil supply cavity through the oil inlet.
Divide oily mechanism to include a plurality of fuel feeding holes, in fig. 3, these fuel feeding holes set gradually along speed reducer power transmission direction (the direction of turning right from a left side in fig. 3), these fuel feeding holes still set gradually along the direction of turning up from down (the direction of turning up from down in fig. 3) simultaneously, the inlet port on right side is higher than left inlet port, the both ends of every inlet port communicate respectively the inner circumference face of two adjacent bearing boss, every inlet port also inclines to be arranged, the right-hand member of inlet port is imported and the left end is for exporting, the import of inlet port is higher than the export.
The oil inlet holes comprise a first oil inlet hole 6-1, a second oil inlet hole 6-2 and a third oil inlet hole 6-3, the first oil inlet hole is arranged between the output shaft boss and the second transmission shaft boss positioned above, the second oil inlet hole is arranged between the first transmission shaft boss and the second transmission shaft boss positioned above, and the third oil inlet hole is arranged between the input shaft boss and the first transmission shaft boss.
The inner circumferential surface of the output shaft boss is provided with an oil guide groove 7 which is parallel to the output shaft, the outer ring of the output shaft bearing blocks the side opening of the oil guide groove, one end of the oil guide groove is communicated with the oil outlet of the pressing plate, and the other end of the oil guide groove is communicated with the first oil inlet hole.
Lubricating oil passes through the oil inlet holes in sequence along the opposite direction of the power transmission of the speed reducer: after being discharged from the oil outlet of the pressure plate, lubricating oil firstly enters the second transmission shaft boss positioned above through the oil guide groove and the first oil inlet hole to lubricate the second transmission shaft bearings 9-21, then enters the first transmission shaft boss through the second oil inlet hole to lubricate the first transmission shaft bearings 9-11, and finally enters the input shaft boss to lubricate the input shaft bearings 2-1.
The orifice position of each oil inlet is higher than the lowest point of the inner circumferential surface of the bearing boss communicated with the oil inlet, so that the lubricating oil with a certain height can be accumulated in the bearing boss to realize the lubrication of the bearing, and the redundant lubricating oil flows into the next oil inlet or directly returns to the bottom of the machine shell through the bearing.
As shown in fig. 3, the outlet of the third oil inlet is higher than the lowest point on the inner circumferential surface of the boss of the input shaft, the inlet of the third oil inlet and the outlet of the second oil inlet are higher than the lowest point on the inner circumferential surface of the boss of the first transmission shaft, the inlet of the second oil inlet and the outlet of the first oil inlet are higher than the lowest point on the inner circumferential surface of the boss of the second transmission shaft, and the inlet (oil guide groove) of the first oil inlet is higher than the lowest point on the inner circumferential surface of the boss of the output shaft.
The oil inlet hole is also arranged between the retainer ring of the bearing and the end cover. The third oil inlet hole is formed between the check ring of the input shaft bearing and the input shaft end cover and between the check ring of the first transmission shaft bearing and the first transmission shaft end cover. The second oil inlet is arranged between a check ring of the second transmission shaft bearing and the second transmission shaft end cover and between a check ring of the first transmission shaft bearing and the first transmission shaft end cover.
The third bearing bosses 1 to 31 and the output shaft bosses located therebelow are immersed in the lubricating oil due to their low positions, and the lubricating oil does not need to be supplied through the oil distribution mechanism. In a similar way, the gears arranged between the input shaft and the first transmission shaft, between the first transmission shaft and the two second transmission shafts and between the two second transmission shafts and the output shaft are immersed in the lubricating oil due to the larger outer diameter, and the lubricating oil is not required to be supplied through the oil distribution mechanism.
The embodiment can also be applied to a parallel speed reducer with two-stage speed reduction transmission, four-stage speed reduction transmission and five-stage speed reduction transmission, and can also be applied to a perpendicular speed reducer.
Finally, it should be noted that the above-mentioned list is only a specific embodiment of the present invention. It is obvious that the present invention is not limited to the above embodiments, but many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (10)
1. A double-impeller self-lubricating speed reducer comprises a shell (1), an input shaft (2) and an output shaft (3) which are rotatably positioned on the shell, and a transmission mechanism for transmitting power between the input shaft and the output shaft; bearing bosses are arranged on the inner walls of the two sides of the shell and comprise an input shaft boss, an output shaft boss and a plurality of transmission shaft bosses; the method is characterized in that: the two sides of the shell are provided with an oil pumping mechanism and an oil distributing mechanism;
the oil pumping mechanism comprises a pressure plate (4) and an impeller (5) which are sequentially arranged between an output shaft bearing (3-1) and an output shaft flange (3-2), an oil outlet (4.1) is formed in the pressure plate, the impeller is fixed with the output shaft, and an oil supply cavity for accommodating the impeller is formed between the pressure plate and the output shaft flange;
the oil distribution mechanism comprises a plurality of oil inlet holes which are sequentially arranged along the power transmission direction of the speed reducer, two ends of each oil inlet hole are respectively communicated with the inner circumferential surfaces of two adjacent bearing bosses, and the oil inlet holes of the output shaft bosses are also communicated with oil outlets of the pressing plates; the impeller is driven by the output shaft to rotate, so that lubricating oil at the bottom of the shell moves to the oil outlet along the circumferential direction of the oil supply cavity, and then flows into the bearing bosses through the oil supply holes in sequence along the opposite direction of power transmission of the speed reducer.
2. The twin-impeller self-lubricating reducer of claim 1, wherein: the oil inlet on the right side is higher than the oil inlet on the left side, the oil inlet is higher than the lowest point of the inner circumferential surface of the bearing boss, and the inlet of each oil inlet is higher than the outlet.
3. The twin-impeller self-lubricating reducer of claim 2, wherein: the inner diameter of the oil supply cavity is larger than that of the output shaft boss; an inner hole (4.2) for the output shaft to pass through is arranged in the center of the pressure plate.
4. The twin-impeller self-lubricating reducer of claim 3, wherein: the impeller comprises a wheel disc (5.1) and a plurality of blades (5.2); the outer diameter of the wheel disc is larger than the inner diameter of the inner hole, and the outer diameter of the paddle is matched with the inner diameter of the oil supply cavity.
5. The twin-impeller self-lubricating reducer of claim 4, wherein: an oil guide groove (7) is formed in the inner circumferential surface of the output shaft boss, and an oil outlet of the pressing plate is communicated with an oil inlet hole of the output shaft boss through the oil guide groove.
6. The twin-impeller self-lubricating reducer of claim 5, wherein: the pressure plate is fixed between the machine shell and the output shaft flange.
7. The twin-impeller self-lubricating reducer of claim 6, wherein: the oil outlet is arranged at the upper part of the pressing plate, and the lower part of the pressing plate is also provided with an oil inlet (4.3).
8. The twin-impeller self-lubricating reducer of claim 7, wherein: the bearing boss comprises an input shaft boss (1-1), a first transmission shaft boss (1-2), two second transmission shaft bosses (1-3) and an output shaft boss (1-4) which are sequentially arranged along the power transmission direction of the speed reducer.
9. The twin-impeller self-lubricating reducer of claim 8, wherein: the oil inlet holes comprise a first oil inlet hole (6-1) arranged between the output shaft boss and the second transmission shaft boss positioned above, a second oil inlet hole (6-2) arranged between the first transmission shaft boss and the second transmission shaft boss positioned above, and a third oil inlet hole (6-3) arranged between the input shaft boss and the first transmission shaft boss.
10. The twin-impeller self-lubricating reducer of claim 9, wherein: the oil inlet hole is arranged between the retainer ring of the bearing and the end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095518.2A CN114263728A (en) | 2022-01-26 | 2022-01-26 | Double-impeller self-lubricating speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095518.2A CN114263728A (en) | 2022-01-26 | 2022-01-26 | Double-impeller self-lubricating speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114263728A true CN114263728A (en) | 2022-04-01 |
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ID=80833337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210095518.2A Pending CN114263728A (en) | 2022-01-26 | 2022-01-26 | Double-impeller self-lubricating speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114263728A (en) |
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2022
- 2022-01-26 CN CN202210095518.2A patent/CN114263728A/en active Pending
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