A lubricating assembly for a reduced speed roller bearing for a tower-type pumping unit

Abstract

The utility model relates to tower type pumping unit technical field provides a kind of tower type pumping unit is used to slow down drum bearing lubricating assembly, including cylinder, the left support shaft is installed in one end of the cylinder, the outer side of left support shaft of the cylinder one end is installed with drum left end cover, the right end cover of drum is installed in the other end of the cylinder, the outer side of left support shaft is installed with left support seat.The utility model is provided with support structure, by high speed, high load first bearing, second bearing and third bearing are lubricated with oil, can form stable oil film when bearing high-speed operation, effectively reduce friction coefficient and timely take away heat;And low-speed running fourth bearing and fifth bearing are lubricated with grease, and lubricating grease can be attached to the surface of bearing rolling body by its own viscosity, ensure the sustained lubrication effect under low-speed working condition, to reduce the oil consumption, reduce the risk of oil leakage and oil seepage, and increase transmission efficiency, reduce cost.

Description

Technical Field

[0001] This utility model relates to the technical field of tower pumping units, and in particular to a lubrication assembly for a reduction drum bearing in a tower pumping unit. Background Technology

[0002] The oil pump is the most important lifting equipment in a rod pumping system, while the tower pumping unit adopts an advanced linear motor frequency conversion drive. It can not only set the number of strokes arbitrarily according to the viscosity of the oil being extracted, but also randomly control the different speeds of the upper and lower strokes. It can achieve long strokes, slow strokes, and stepless speed regulation. In the existing tower-type oil pumping unit, the lubrication assembly for the geared drum bearing requires the oil to be filled to 40mm from the center line in order to lubricate and dissipate heat from all components. This ensures that all bearings in the gearbox are submerged in the oil. However, increasing the oil level leads to greater pressure on the seals, more potential oil leaks, and a higher risk of leakage. Furthermore, a large amount of oil increases resistance during operation, resulting in significant energy waste. Utility Model Content

[0003] The purpose of this invention is to provide a lubrication assembly for a reduction drum bearing in a tower-type pumping unit, in order to solve the problem of excessive oil leakage risk in existing lubrication assemblies for reduction drum bearings in tower-type pumping units.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lubrication assembly for a reduction drum bearing of a tower-type oil pumping unit, comprising a cylinder; A left support shaft is installed at one end of the cylinder, a left end cover of the roller is installed on the outside of the left support shaft at one end of the cylinder, a right end cover of the roller is installed at the other end of the cylinder, a left support seat is installed on the outside of the left support shaft, and a right support seat is installed on the outside of the right end cover of the roller. Both ends of the cylinder are equipped with support structures. The support structures include a first bearing installed on the outside of the left end cover of the drum, a second bearing installed on one end of the left support shaft, a third bearing installed on the outside of the right end cover of the drum, a fourth bearing installed on one end of the left support seat, and a fifth bearing installed on one end of the right support seat. The support structure is equipped with an oil inlet structure.

[0005] Preferably, one end of the right support is closed, both the left and right support are filled with grease, and the cylinder is filled with organic oil.

[0006] Through the above structure, the closed design of the right support seat forms a physical barrier during use, blocking the leakage path of the internal oil of the cylinder to the external environment. The grease in the left and right support seats itself has a certain sealing effect. The grease filling the gap between the support seat and the bearing can prevent external dust and impurities from entering the bearing, while reducing the seepage of internal oil of the cylinder to the support seat side through the fit gap between the bearing and the support seat.

[0007] Preferably, the axial height of the first, second, and third bearings is higher than the axial height of the fourth and fifth bearings.

[0008] With the above structure, during use, the centrifugal force generated by the high-positioned bearing's rotation, combined with gravity, allows the oil to more fully cover the bearing's rolling elements, raceways, and other key contact surfaces, reducing lubrication dead zones and ensuring the formation of a stable and continuous oil film during high-speed operation, thus improving lubrication uniformity.

[0009] Preferably, the fourth and fifth bearings are grease-lubricated, an oil seal is installed at the right end of the fourth bearing, and the first, second, and third bearings are oil-lubricated.

[0010] With the above structure, the oil seal installed at the right end of the fourth bearing prevents grease from penetrating into the cylinder during use, avoiding mixing of grease with the machine oil inside the cylinder, reducing the risk of lubrication failure caused by media crossflow, and ensuring the stability of the lubrication system.

[0011] Preferably, the oil inlet structure includes a first oil hole located at one end of the second bearing, a second oil hole located inside the left end cover of the drum, and a third oil hole located inside the right end cover of the drum.

[0012] Preferably, three sets of the first oil holes are provided at one end of the second bearing, six sets of the second oil holes are provided inside the left end cover of the drum, and the second oil holes are distributed at equal intervals inside the left end cover of the drum, and six sets of the third oil holes are provided inside the right end cover of the drum, and the third oil holes are distributed at equal intervals inside the right end cover of the drum.

[0013] With the above structure, when the cylinder rotates at high speed during use, the oil diffuses to the outer periphery through the equally spaced oil holes under the action of centrifugal force, so that the oil can be replenished to the friction gap in real time with the movement of the bearing, forming a dynamic lubrication cycle.

[0014] The present invention provides a lubrication assembly for a reduction drum bearing in a tower-type oil pumping unit, the advantages of which are: By incorporating a support structure, the first, second, and third bearings, which operate at high speeds and under high loads, are lubricated with engine oil. This lubrication forms a stable oil film during high-speed operation, effectively reducing the coefficient of friction and dissipating heat promptly. Meanwhile, the fourth and fifth bearings, which operate at low speeds, are lubricated with grease. The grease, due to its viscosity, can adhere to the surface of the bearing rolling elements for an extended period, ensuring continuous lubrication under low-speed conditions. This reduces the amount of engine oil used, lowers the risk of oil leakage, increases transmission efficiency, and reduces costs. With its oil inlet structure and multiple sets of oil holes, the machine achieves precise delivery and even distribution of oil, preventing insufficient lubrication or grease buildup in certain areas. During operation, the oil flows dynamically through pre-designed channels as the cylinder rotates, reducing manual intervention and lowering the labor and material costs associated with regular maintenance. Attached Figure Description

[0015] Figure 1 This is a side sectional view of the present invention; Figure 2 This is a side sectional view of the second bearing of this utility model; Figure 3 This is a three-dimensional schematic diagram of the second bearing of this utility model; Figure 4 This is a three-dimensional schematic diagram of the left end cover of the roller of this utility model; Figure 5 This is a three-dimensional schematic diagram of the right end cover of the roller of this utility model.

[0016] The following are the annotations in the figure: 1. Cylinder body; 2. Left support shaft; 3. Left end cover of the drum; 4. Right end cover of the drum; 5. Left support seat; 6. Right support seat; 7. Support structure; 701. First bearing; 702. Second bearing; 703. Third bearing; 704. Fourth bearing; 705. Fifth bearing; 8. Oil inlet structure; 801. First oil hole; 802. Second oil hole; 803. Third oil hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 The present invention provides a lubrication assembly for a reduction drum bearing of a tower-type oil pumping unit, comprising a cylinder 1.

[0019] Reference Figures 1-5As shown, a left support shaft 2 is installed at one end of the cylinder 1. A left end cover 3 of the roller is installed on the outside of the left support shaft 2 at one end of the cylinder 1. A right end cover 4 of the roller is installed at the other end of the cylinder 1. A left support seat 5 is installed on the outside of the left support shaft 2. A right support seat 6 is installed on the outside of the right end cover 4 of the roller. One end of the right support seat 6 is closed. Both the left support seat 5 and the right support seat 6 are filled with grease. The inside of the cylinder 1 is filled with organic oil. Support structures 7 are installed at both ends of the cylinder 1. The support structure 7 includes a first bearing 701 installed on the outside of the left end cover 3 of the roller, and a left support shaft 2. A second bearing 702 is installed at one end of bearing 2. A third bearing 703 is installed on the outer side of the right end cover 4 of the drum. A fourth bearing 704 is installed at one end of the left support 5. A fifth bearing 705 is installed at one end of the right support 6. The axial height of the first bearing 701, the second bearing 702 and the third bearing 703 is higher than the axial height of the fourth bearing 704 and the fifth bearing 705. The fourth bearing 704 and the fifth bearing 705 are grease lubricated. An oil seal is installed at the right end of the fourth bearing 704. The first bearing 701, the second bearing 702 and the third bearing 703 are oil lubricated.

[0020] By injecting engine oil into the cylinder 1, lubrication is provided for the high-speed, high-load first bearing 701, second bearing 702, and third bearing 703. Meanwhile, the left support seat 5 and right support seat 6 are filled with grease to provide continuous lubrication for the fourth bearing 704 and fifth bearing 705. The grease adheres to the surface of the bearing rolling elements through its own viscosity, forming a stable oil film during low-speed operation, reducing the need for frequent grease replenishment. Furthermore, an oil seal is installed at the right end of the fourth bearing 704 to prevent grease leakage and to separate the engine oil on the right side. Additionally, the mounting axis height of the first bearing 701, second bearing 702, and third bearing 703 is higher than that of the fourth bearing 704 and fifth bearing 705, which enhances the flow and penetration of engine oil in the bearing gaps by utilizing gravity, thereby improving lubrication efficiency. In addition, through a segmented sealing method, grease lubrication + oil lubrication + grease lubrication replaces all oil lubrication, reducing the amount of engine oil used, thereby reducing internal pressure and reducing the number of oil leakage points.

[0021] Reference Figures 3-5 As shown, the support structure 7 has an oil inlet structure 8 inside. The oil inlet structure 8 includes a first oil hole 801 at one end of the second bearing 702, a second oil hole 802 inside the left end cover 3 of the drum, and a third oil hole 803 inside the right end cover 4 of the drum. There are three sets of the first oil holes 801 at one end of the second bearing 702, and six sets of the second oil holes 802 inside the left end cover 3 of the drum. The second oil holes 802 are evenly distributed inside the left end cover 3 of the drum. There are six sets of the third oil holes 803 inside the right end cover 4 of the drum. The third oil holes 803 are evenly distributed inside the right end cover 4 of the drum.

[0022] Oil is supplied to the second bearing 702 through three sets of first oil inlets 801, and oil is supplied to the first bearing 701 inside the left end cover 3 of the drum through six sets of equally spaced second oil inlets 802. Oil is supplied to the third bearing 703 inside the right end cover 4 of the drum through six sets of equally spaced third oil inlets 803. When the equipment is running, the cylinder 1 drives the left end cover 3 and the right end cover 4 of the drum to rotate. The oil is continuously delivered to the first bearing 701, the second bearing 702 and the third bearing 703 through the preset channels. As the bearings rotate, a dynamic oil film is formed, which reduces friction loss and carries away heat. Then, the oil is splashed to lubricate the bearings, ensuring that the oil evenly covers each oil lubrication bearing contact surface.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lubrication assembly for a reduction drum bearing of a tower-type oil pumping unit, comprising a cylinder (1); Its features are: A left support shaft (2) is installed at one end of the cylinder (1), a left end cover (3) of the roller is installed on the outside of the left support shaft (2) at one end of the cylinder (1), a right end cover (4) of the roller is installed at the other end of the cylinder (1), a left support seat (5) is installed on the outside of the left support shaft (2), and a right support seat (6) is installed on the outside of the right end cover (4) of the roller. Both ends of the cylinder (1) are equipped with support structures (7). The support structure (7) includes a first bearing (701) installed on the outside of the left end cover (3) of the drum, a second bearing (702) installed on one end of the left support shaft (2), a third bearing (703) installed on the outside of the right end cover (4) of the drum, a fourth bearing (704) installed on one end of the left support seat (5), and a fifth bearing (705) installed on one end of the right support seat (6). The support structure (7) is provided with an oil inlet structure (8).

2. The lubrication assembly for the reduction drum bearing of a tower-type oil pumping unit according to claim 1, characterized in that: One end of the right support seat (6) is closed. The interiors of the left support seat (5) and the right support seat (6) are filled with grease, and the interior of the cylinder (1) is filled with organic oil.

3. The lubrication assembly for the reduction drum bearing of a tower-type oil pumping unit according to claim 1, characterized in that: The axial height of the first bearing (701), the second bearing (702), and the third bearing (703) is higher than the axial height of the fourth bearing (704) and the fifth bearing (705).

4. The lubrication assembly for the reduction drum bearing of a tower-type oil pumping unit according to claim 1, characterized in that: The fourth bearing (704) and the fifth bearing (705) are grease lubricated, and an oil seal is installed at the right end of the fourth bearing (704). The first bearing (701), the second bearing (702) and the third bearing (703) are oil lubricated.

5. The lubrication assembly for the reduction drum bearing of a tower-type oil pumping unit according to claim 1, characterized in that: The oil inlet structure (8) includes a first oil hole (801) located at one end of the second bearing (702), a second oil hole (802) located inside the left end cover (3) of the drum, and a third oil hole (803) located inside the right end cover (4) of the drum.

6. The lubrication assembly for the reduction drum bearing of a tower-type oil pumping unit according to claim 5, characterized in that: The first oil hole (801) is provided in three sets at one end of the second bearing (702), the second oil hole (802) is provided in six sets inside the left end cover (3) of the drum, and the second oil hole (802) is distributed at equal intervals inside the left end cover (3) of the drum. The third oil hole (803) is provided in six sets inside the right end cover (4) of the drum, and the third oil hole (803) is distributed at equal intervals inside the right end cover (4) of the drum.

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