Gearbox lubrication system that requires no disassembly for cleaning

Abstract

A gearbox lubrication system that allows for cleaning without disassembling the gearbox. The invention includes an oil carriage fixedly mounted inside the spokes of the output shaft gear. As the output shaft rotates, lubricating oil from the oil sump in the gearbox enters the oil chamber through inlet I and inlet II of the oil carriage; then flows out through the outlet to lubricate the gearbox bearings. An oil receiving tray is located below the gear on the drive shaft and is mounted on the inner wall of the gearbox. An oil passage is located near the inner wall of the upper mating surface of the gearbox, communicating with the bearings inside the gearbox and connected to an oil receiving groove. Lubricating oil flowing out of the oil carriage's outlet flows into the oil passage through the oil receiving groove. Its advantages include ensuring sufficient lubrication of the bearings and gears under low and normal speed conditions; a filtration device removing metallic and non-metallic impurities from the lubricating oil; and an open oil passage and removable filter screen, allowing for cleaning or replacement through the observation window on the top cover without disassembling the gearbox, thus reducing operational difficulty.

Description

Technical Field

[0001] This invention relates to a gearbox lubrication system, and more particularly to a gearbox lubrication system that can be cleaned without disassembling the gearbox, belonging to the field of oil and gas development technology. Background Technology

[0002] The reducer is a key component of the oil pumping unit. Currently, oil pumping unit reducers use a combination of scraping lubrication and splash lubrication, which has the following problems: Deformation of the scraper blades or gear misalignment prevents the scraper blades from scraping enough lubricating oil from the gear side to deliver to the bearings, causing bearing damage due to insufficient lubrication; when the reducer operates at low speed, the amount of oil carried by the gears from the oil sump is small, and the lubricating oil splashes to the appropriate location, causing damage to the drive shaft bearing due to insufficient lubrication; metal shavings generated during reducer operation are carried by the lubricating oil into the bearing interior and gear meshing parts, causing scratches and damage to the bearing rollers and gear surfaces; deposits in the lubricating oil clog the bearing lubrication passages, causing bearing damage due to insufficient lubrication; cleaning the bearing lubrication passages requires disassembling the reducer housing, which is labor-intensive and can easily damage parts during the cleaning process, leading to a decrease in reducer quality. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings of existing lubrication of bearings and gears in oil pumping unit gearboxes, the present invention provides a gearbox lubrication system that can be cleaned without disassembling the gearbox.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a reducer lubrication system that does not require disassembly for cleaning, including a reducer housing, a top cover, a drive shaft, and an output shaft. An output shaft gear is installed on the output shaft. An oil carriage is fixedly installed on the inner side of the spokes of the output shaft gear. The oil carriage and the output shaft gear rotate with the output shaft. The lubricating oil in the oil sump of the housing enters the oil chamber from the oil inlet I and oil inlet II of the oil carriage; and then flows out through the oil outlet to lubricate the reducer bearing.

[0005] An oil receiving tray is provided below the gear of the drive shaft, and the oil receiving tray is installed on the inner wall of the housing.

[0006] An oil passage is provided on the upper closing surface of the gearbox near the inner wall. The oil passage is connected to the bearing inside the reducer and is connected to the oil receiving groove. The lubricating oil flowing out of the oil outlet of the oil carriage flows into the oil passage through the oil receiving groove.

[0007] The oil tanker has a rhomboid cross-section, and filter chambers are provided at both ends inside the shell. A replaceable filter screen is installed on the bracket at the bottom of the filter chamber.

[0008] The oil inlet I is connected to the filter chamber, and the lubricating oil in the filter chamber enters the oil chamber after being filtered by the filter screen.

[0009] The end faces of the housing are respectively provided with an opening groove and a magnet. The opening groove is opened to replace the filter screen, and the magnet is used to close the opening groove and adsorb metal impurities in the lubricating oil.

[0010] The oil receiving tray is fan-shaped. The gear meshing lubricating oil of the drive shaft flows downward into the oil receiving tray, enters the drive shaft bearing for lubrication, and then returns to the oil sump.

[0011] The oil receiving tray is fixed by a fixing plate and tilts upwards at an angle, with an angle between the upper and lower connecting holes on the fixing plate.

[0012] After the housing is fixedly connected to the top cover, the inner circle of the top cover is larger than the outer edge of the oil passage, and the oil passage is exposed inside the reducer housing.

[0013] One end of the oil receiving groove is connected to and communicates with the oil channel, while the other end is suspended and tilted upwards.

[0014] The beneficial effects of this invention are that the structure is reasonably designed, which can ensure that the bearings and gears are fully lubricated under low-speed and normal-speed conditions; the filter device can remove metal and non-metal impurities from the lubricating oil; the open oil passage and detachable filter screen can be cleaned and maintained through the observation window without disassembling the accelerator housing, reducing the difficulty of work, reducing the workload, and ensuring the stability of the quality of the reducer mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the gearbox lubrication system of the present invention that allows for cleaning without disassembling the casing.

[0016] Figure 2 This is a schematic diagram of the oil tanker structure in this invention, wherein: Figure 2 -a is the front view of the oil tanker. Figure 2 -b is Figure 2 -a's left view.

[0017] Figure 3 This is a schematic diagram of the oil tanker installation in this invention.

[0018] Figure 4 This is a schematic diagram of the oil receiving tray in this invention, wherein: Figure 4 -a is the main view of the oil receiving tray. Figure 4 -b is Figure 4 -a's right view.

[0019] Figure 5 This is a schematic diagram of the structure of the housing, oil passage and top cover in this invention.

[0020] In the diagram: 1. Oil passage, 2. Oil carriage, 3. Oil receiving trough, 4. Oil receiving tray, 5. Housing base, 6. Fixing plate, 7. Intermediate shaft gear, 8. Output shaft gear, 9. Upper mating housing surface, 10. Top cover, 11. Drive shaft, 12. Intermediate shaft, 13. Output shaft, 2-1. Oil inlet I, 2-2. Filter screen, 2-3. Oil chamber, 2-4. Oil outlet, 2-5. Housing, 2-6. Filter chamber, 2-7. Partition plate, 2-8. Bracket, 2-9. Magnet, 2-10. Opening slot, 2-11. Oil inlet II. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. However, those skilled in the art should understand that the present invention is not limited to the specific embodiments listed, and any embodiment that conforms to the spirit of the present invention should be included within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "vertical", "up", "down", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing or simplifying the description of this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "seal" should be interpreted broadly. For example, a connection can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection, or an integral connection; it can be a mechanical connection or an indirect connection through an intermediate medium, or it can be a connection between the internal parts of two components. A seal can be an oil seal, a packing seal, or other forms of seal. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] See appendix Figure 1-5 This invention discloses a gearbox lubrication system that allows for cleaning without disassembling the gearbox. The system includes a gearbox housing 5, a top cover 10, a drive shaft 11, and an output shaft 13. An output shaft gear 8 is mounted on the output shaft 13. Oil carriages 2 are fixedly arranged on the inner side of the spokes of the output shaft gear 8. The number of oil carriages 2 is two or more, determined by the number of spokes of the output shaft gear 8. As the output shaft 13 rotates, the oil carriages 2 and the output shaft gear 8 rotate. Lubricating oil in the oil sump of the gearbox housing 5 enters the oil chamber 2-3 through the oil inlet I 2-1 and oil inlet II 2-11 of the oil carriages 2, and then flows out through the oil outlet 2-4.

[0025] An oil receiving tray 4 is provided below the gear of the drive shaft 11, and the oil receiving tray 4 is installed on the inner wall of the housing 5.

[0026] An oil passage 1 is provided on the upper mating surface 9 of the gearbox 5 near the inner wall. The oil passage 1 communicates with the intermediate shaft bearing and the output shaft bearing in the reducer, and the oil passage 1 is connected to the oil receiving groove 3. The lubricating oil flowing out of the oil outlet 2-4 of the oil carriage 2 flows into the oil passage 1 through the oil receiving groove 3. Preferably, the oil passage 1 is provided around the circumference of the upper mating surface near the inner wall of the gearbox 5.

[0027] Furthermore, the shell 2-5 of the oil tank 2 has a rhomboid cross-section, and filter chambers 2-6 are provided at both ends inside the shell 2-5. A replaceable filter screen 2-2 is installed on the bracket 2-8 at the bottom of the filter chamber 2-6. The filter screen 2-2 can filter out suspended non-metallic impurities in the lubricating oil, further purifying the lubricating oil, which is beneficial for maintaining the stable operation of the reducer and reducing the failure rate. Preferably, the bracket 2-8 and the filter screen 2-2 are integrated for easy replacement.

[0028] The oil inlet I2-1 is connected to the filter chamber 2-6. The lubricating oil in the filter chamber 2-6 enters the oil chamber 2-3 after being filtered by the filter screen 2-2.

[0029] The housing 2-5 has opening slots 2-10 and magnets 2-9 on its two end faces, respectively. The opening slots 2-10 are opened to replace the filter screen 2-2, and the magnets 2-9 are used to close the opening slots 2-10. The magnets 2-9 can adsorb metallic impurities in the lubricating oil, maintaining the cleanliness of the lubricating oil.

[0030] The oil receiving pan 4 is fan-shaped. The gear meshing lubricating oil of the drive shaft 11 flows downward into the oil receiving pan 4, enters the drive shaft bearing for lubrication, and then returns to the oil sump.

[0031] The oil receiving tray 4 is fixed by the fixing plate 6 and tilts upward. There is a bend between the upper and lower connecting holes of the fixing plate 6. Preferably, the bend angle is 4-7°. After being flattened by bolt connection, it generates an anti-loosening force on the bolt connection structure.

[0032] After the housing 5 is fixedly connected to the upper cover 10, the inner circle of the upper cover 10 is larger than the outer edge of the oil passage 1, so that the oil passage 1 is exposed inside the reducer housing. The oil passage 1 can be cleaned by opening the observation window of the upper cover 10 of the reducer, and the cleaning operation can be completed without disassembling the upper cover 10.

[0033] One end of the oil receiving groove 3 is connected to and communicates with the oil channel 1, while the other end is suspended and tilted upwards.

[0034] Example:

[0035] A gearbox lubrication system that allows for cleaning without disassembling the gearbox includes a gearbox housing 5, a top cover 10, a drive shaft 11, and an output shaft 13. An output shaft gear 8 is mounted on the output shaft 13. Oil carriages 2 are fixedly installed on the inner side of the spokes of the output shaft gear 8. The outer shell of the oil carriage 2 is fixedly connected to the spokes of the output shaft gear 8 by welding. Three oil carriages 2 are spaced apart at six spoke intervals to ensure smooth operation of the output shaft gear 8 (e.g., ...). Figure 1 , 3 (As shown).

[0036] The oil carriage 2 and output shaft gear 8 rotate with the output shaft 13. Part of the lubricating oil in the oil sump of the housing 5 enters the filter chamber 2-6 of the oil carriage 2 from the oil inlet I 2-1, and after filtration, enters the oil chamber 2-3. Part of the lubricating oil enters the oil chamber 2-3 from the oil inlet II 2-11. Then, the lubricating oil in the oil chamber 2-3 flows out through the oil outlet 2-4 to lubricate the bearings (such as...) in the reducer. Figure 2 (As shown).

[0037] The cross-section of the shell 2-5 of the oil tanker 2 is rhomboid (e.g., Figure 2 As shown in -b), filter chambers 2-6 are provided at both ends inside the housing 2-5, and the sides of the filter chambers 2-6 are separated by partitions 2-7; oil inlet I 2-1 is located above the filter chambers 2-6, and oil inlet II 2-11 is located in the middle of the housing 2-5. A replaceable filter screen 2-2 is installed on the bracket 2-8 at the bottom of the filter chamber 2-6, and the bracket 2-8 and the filter screen 2-2 are integrally formed. Oil outlets 2-4 are located at both ends of the bottom of the filter chamber 2-6 (e.g., ...). Figure 2 -a is shown).

[0038] The housing 2-5 has opening slots 2-10 and magnets 2-9 on its two end faces, respectively. The opening slots 2-10 are used to replace the filter screen 2-2. The magnets 2-9 are installed at the opening slots 2-10 on the side of the housing 2-5. Closing the opening slots 2-10 simultaneously adsorbs suspended metallic impurities in the lubricating oil. By opening the observation window of the reducer cover 10 and removing the magnets 2-9, the filter screen 2-2 can be replaced and the impurities adsorbed on the magnets can be cleaned through the opening slots 2-10. The operation of replacing the filter screen 2-2 and cleaning the magnets 2-9 can be completed without disassembling the cover 10.

[0039] The oil carriage 2 and the output shaft gear 8 rotate together with the output shaft 13. When the output shaft gear 8, where the oil carriage 2 is located, is in its lowest position, the oil inlet I 2-1 and oil inlet II 2-11 of the oil carriage 2 are located in the oil sump of the housing 5. Part of the lubricating oil in the oil sump enters the filter chamber 2-6 through the oil inlet I 2-1. After being filtered by the filter screen 2-2, the lubricating oil enters the oil chamber 2-3, while part of it enters the oil chamber 2-3 from the oil inlet I 2-11. As the oil carriage 2 rotates together with the driven shaft, the lubricating oil in the oil chamber 2-3 flows out from the oil outlets 2-4 at both ends, providing sufficient lubricating oil for the bearings in the reducer.

[0040] An oil receiving plate 4 is provided below the drive shaft 11 (e.g., Figure 1 , 4 As shown), it is used to receive the lubricating oil after the drive shaft gear meshes; the oil receiving tray 4 is installed on the inner wall of the housing 5.

[0041] The oil receiving tray 4 is fan-shaped (e.g., ...). Figure 4 As shown in -a), after the gears of the drive shaft 11 mesh, the lubricating oil is squeezed downwards into the oil receiving pan 4, the oil receiving pan 4 provides lubricating oil to the drive shaft bearing, and then the lubricating oil returns to the oil sump.

[0042] A fixing plate 6 is connected below the oil receiving tray 4. The fixing plate 6 has mounting holes and is fixed to the inner wall of the housing 5 with screws. After fixing, the oil receiving tray 4 tilts upwards. The bolt holes of the fixing plate 6 are bent and inclined in the middle, with an inclination of 4-7° (e.g., Figure 4 As shown in -b), the stress generated when the fixing plate 6 is pressed flat and fixed to the inner wall of the box base 5 with bolts can play a role in preventing loosening.

[0043] An oil passage 1 is provided on the upper mating surface 9 of the gearbox 5 near the inner wall between the intermediate shaft and the output shaft. The oil passage 1 communicates with the intermediate shaft bearing and the output shaft bearing inside the reducer. The oil passage 1 is provided with an oil receiving groove 3. The lubricating oil flowing out of the oil outlet 2-4 of the oil carriage 2 flows into the oil passage 1 through the oil receiving groove 3. The oil passage 1 is arranged between the intermediate shaft and the output shaft on the upper mating surface 9, and the oil passage 1 provides lubricating oil to the intermediate shaft bearing and the output shaft bearing of the reducer.

[0044] After the housing 5 is fixedly connected to the upper cover 10, the upper cover 10 does not cover the oil passage 1, and the oil passage 1 is completely exposed inside the reducer (e.g., Figure 5 (As shown), this design facilitates cleaning. One end of the oil receiving groove 3 is connected to and communicates with the oil passage 1, while the other end is suspended, slightly tilted upwards. The lubricating oil flowing from the oil cart 2 flows into the oil passage 1 through the oil receiving groove 3, providing lubrication to the intermediate shaft bearing and the output shaft bearing. Afterwards, the lubricating oil flows back into the oil sump of the housing 5. The oil passage 1 can be cleaned by opening the observation window of the reducer cover 10 without removing the cover 10.

[0045] In this embodiment, the gearbox is equipped with a drive shaft 11, an intermediate shaft 12, and an output shaft 13. The oil carriage 2 is fixedly installed inside the spokes of the output shaft gear 8. The oil receiving tray 4 is located below the drive shaft gear 11 and receives the lubricating oil after the drive shaft gear 11 meshes with the intermediate shaft gear 7. The lubricating oil flows into the drive shaft bearing for lubrication and then returns to the oil sump. The gearbox base 5 has an oil passage 1 on the gearbox surface 9. When the lubricating oil flowing out of the oil outlet 2-4 of the oil carriage 2 enters the oil passage 1 through the oil receiving groove 3, it lubricates the intermediate shaft bearing and the output shaft bearing through the oil passage 1 and then returns to the oil sump.

[0046] It should be noted that the above embodiments are examples and not limitations of the present invention, and those skilled in the art will be able to design many alternative embodiments without departing from the scope of the claims of this patent.

Claims

1. A gearbox lubrication system that requires no disassembly for cleaning, comprising a gearbox housing, a top cover, a drive shaft, and an output shaft, wherein the output shaft is equipped with an output shaft gear, characterized in that: An oil carriage is fixedly installed on the inner side of the spokes of the output shaft gear. As the output shaft rotates, the oil carriage and the output shaft gear rotate together. The lubricating oil in the oil sump of the housing enters the oil chamber from the oil inlet I and oil inlet II of the oil carriage; and then flows out through the oil outlet to lubricate the reducer bearing.

2. The gearbox lubrication system for cleaning without disassembly as described in claim 1, characterized in that: An oil receiving tray is provided below the gear of the drive shaft, and the oil receiving tray is installed on the inner wall of the housing.

3. The gearbox lubrication system for cleaning without disassembly as described in claim 1, characterized in that: An oil passage is provided on the upper closing surface of the gearbox near the inner wall. The oil passage is connected to the bearing inside the reducer and is connected to the oil receiving groove. The lubricating oil flowing out of the oil outlet of the oil carriage flows into the oil passage through the oil receiving groove.

4. The gearbox lubrication system for cleaning without disassembly as described in claim 1, characterized in that: The oil tanker has a rhomboid cross-section, and filter chambers are provided at both ends inside the shell. A replaceable filter screen is installed on the bracket at the bottom of the filter chamber.

5. The gearbox lubrication system for cleaning without disassembly as described in claim 4, characterized in that: The oil inlet I is connected to the filter chamber, and the lubricating oil in the filter chamber enters the oil chamber after being filtered by the filter screen.

6. The gearbox lubrication system for cleaning without disassembly as described in claim 5, characterized in that: The end faces of the housing are respectively provided with an opening groove and a magnet. The opening groove is opened to replace the filter screen, and the magnet is used to close the opening groove and adsorb metal impurities in the lubricating oil.

7. The gearbox lubrication system for cleaning without disassembly as described in claim 2, characterized in that: The oil receiving tray is fan-shaped. The gear meshing lubricating oil of the drive shaft flows downward into the oil receiving tray, enters the drive shaft bearing for lubrication, and then returns to the oil sump.

8. The gearbox lubrication system for cleaning without disassembly as described in claim 7, characterized in that: The oil receiving tray is fixed by a fixing plate and tilts upwards at an angle, with an angle between the upper and lower connecting holes on the fixing plate.

9. The gearbox lubrication system for cleaning without disassembly as described in claim 3, characterized in that: After the housing is fixedly connected to the top cover, the inner circle of the top cover is larger than the outer edge of the oil passage, and the oil passage is exposed inside the reducer housing.

10. The gearbox lubrication system for cleaning without disassembly according to claim 8, characterized in that: One end of the oil receiving groove is connected to and communicates with the oil channel, while the other end is suspended and tilted upwards.

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