A trapezoidal thread lubrication structure

Abstract

The utility model discloses a trapezoidal thread lubricating structure relates to lubricating technical field, including upper seat and lower seat, the side of upper seat and lower seat contact is trapezoidal thread, and upper seat is screwed on the lower seat, and one side of upper seat is oil inlet, and the oil channel is connected to one side of oil inlet, and the utility model discloses the oil inlet of adopting L -shaped oil channel connection in upper seat can directly realize the lubrication of refueling.

Description

Technical Field

[0001] This utility model relates to the field of lubrication technology, and in particular to a trapezoidal thread lubrication structure. Background Technology

[0002] The existing drive shaft fixing components lack an oil inlet, which usually requires disassembly and re-lubrication, making lubrication very troublesome. A drive shaft fixing structure that is convenient for lubrication and stable needs to be designed.

[0003] In the prior art, the shaft-fixed vibration motor disclosed in patent publication number CN1161591A uses a grease-like component such as lubricating oil to separate the rotor's drive bearing R from the flat commutator between the sliding parts, and sets a protrusion that forms an integral part with the rotor in the middle, and forms a lubricating oil insulating layer coating on the surface of the protrusion. The protrusion has annular grooves. However, this comparative technology does not have a specific oil inlet and oil passage, and the structure is not stable enough. Utility Model Content

[0004] The purpose of this invention is to solve the problem that when the existing drive shaft is fixed, the fixing component lacks a separate oil inlet, and lubrication requires disassembly and addition of lubricating oil, which is very troublesome. This invention adopts an L-shaped oil passage to connect the oil inlet located on the upper seat, which can directly realize oil lubrication, and provides a trapezoidal thread lubrication structure.

[0005] Another objective of this invention is to address the problem that existing lubrication structures are not stable enough and are prone to breakage after prolonged use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a trapezoidal thread lubrication structure, including an upper seat and a lower seat, both of which have trapezoidal threads on the contact side. The upper seat is screwed onto the lower seat, and one side of the upper seat is an oil inlet, which is connected to an oil passage.

[0007] Preferably, the oil passage is L-shaped, with an oil plug at one end.

[0008] Preferably, the drive shaft is located between the upper and lower seats, and a bushing is provided on the outside of the drive shaft. The first bearing is connected to the top side of the upper seat, and the second bearing is connected to the bottom side of the lower seat.

[0009] Preferably, the drive shaft is connected to the first and second bearings by a bushing.

[0010] Preferably, a first oil seal is embedded on the side of the bushing that contacts the upper seat, and the first oil seal is press-fitted between the bushing and the upper seat.

[0011] Preferably, an upper sealing ring and a lower sealing ring are provided between the drive shaft and the bushing, with the upper sealing ring located on the upper part of the drive shaft and the lower sealing ring located on the lower part of the drive shaft.

[0012] Preferably, a second oil seal and a third oil seal are respectively provided inside the bushing, with the second oil seal installed in the middle of the bushing.

[0013] As a preferred option, the lower seat has an integral convex structure.

[0014] Preferably, the connecting thread between the upper and lower seats is trapezoidal.

[0015] Preferably, the second bearing has a retaining ring below it, and the bushing has a stepped structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are: this utility model directly sets an independent oil inlet, realizing lubrication without disassembly, and greatly reducing maintenance time and downtime.

[0017] This invention improves the overall vibration resistance and driving axial / radial load stability by optimizing the fixing structure, thereby reducing the risk of displacement or loosening during operation. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present utility model.

[0019] Figure 2 for Figure 1 Enlarged view of point C.

[0020] Figure 3 for Figure 1 Sectional view at point BB.

[0021] In the diagram: 1. Drive shaft; 11. Second oil seal; 12. Third oil seal; 13. Upper sealing ring; 14. Lower sealing ring; 2. First oil seal; 3. Shaft sleeve; 4. First bearing; 5. Second bearing; 6. Upper seat; 7. Oil inlet; 71. Oil passage; 72. Oil plug; 8. Shaft retaining ring; 9. Lower seat. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. The described embodiments are only some embodiments of this utility model, and not all embodiments.

[0023] Example 1: Refer to Figures 1 to 3 A trapezoidal thread lubrication structure is mainly composed of a drive shaft 1, an upper seat 6, and a lower seat 9. In this structure, trapezoidal threads are machined on the sides of the upper seat 6 and the lower seat 9 that are in contact with each other. This thread design allows the upper seat 6 and the lower seat 9 to be connected by the trapezoidal threads. Specifically, the upper seat 6 is screwed onto the lower seat 9 to form a tight and stable connection.

[0024] On one side of the upper seat 6, a dedicated oil inlet 7 is provided for adding lubricating oil to the lubrication structure to ensure the normal operation of the lubrication system. An oil passage 71 is connected to one side of the oil inlet 7, through which the lubricating oil is guided to various parts of the lubrication structure that require lubrication. At the midpoint between the upper seat 6 and the lower seat 9, a drive shaft 1 is installed. The drive shaft 1 is a key component of the entire lubrication structure, responsible for transmitting power. To protect the drive shaft 1 and reduce friction between it and surrounding components, a bushing 3 is provided on the outer side of the drive shaft 1. The bushing 3 serves as an isolation and lubrication unit, while also contributing to improving the operating efficiency and stability of the entire lubrication structure.

[0025] The oil passage 71 is designed in an L-shape. This L-shaped oil passage structure has unique advantages, allowing lubricating oil to enter the interior of the lubrication structure more smoothly and ensuring that the lubricating oil is evenly distributed to all parts that require lubrication. An oil plug 72 is installed at one end of the oil passage 71. The design of the oil plug 72 not only facilitates the addition and replacement of lubricating oil, but also effectively prevents lubricating oil leakage when not in use, thereby ensuring the effective operation of the lubrication system, extending the service life of the lubricating oil, and reducing maintenance costs.

[0026] The upper seat 6 has a first bearing 4 connected to its top side, while the lower seat 9 has a second bearing 5 connected to its bottom side. The arrangement of the first bearing 4 and the second bearing 5 is crucial for the stable operation of the entire lubrication structure. They effectively support the drive shaft 1, keeping it stable during operation and reducing vibration and wear. This design not only improves the operating accuracy of the drive shaft 1 but also extends its service life, thereby enhancing the reliability and stability of the entire mechanical transmission system.

[0027] Drive shaft 1 is connected to first bearing 4 and second bearing 5 via bushing 3. This connection method has significant advantages, allowing drive shaft 1 to operate smoothly under the protection of bushing 3. Bushing 3 not only acts as an isolation element, preventing direct contact between drive shaft 1 and bearings and thus reducing friction, but also provides lubrication, further reducing wear between drive shaft 1 and bearings. This design not only improves the operating efficiency of drive shaft 1 but also extends the service life of bearings and reduces maintenance costs.

[0028] A first oil seal 2 is embedded on the side of the bushing 3 that contacts the upper seat 6. The first oil seal 2 is pressed between the bushing 3 and the upper seat 6 through an interference fit. This interference fit ensures a tight seal between the first oil seal 2, the bushing 3, and the upper seat 6, effectively preventing lubricating oil leakage from the contact area between the bushing 3 and the upper seat 6. The first oil seal 2 is crucial for the sealing performance of the lubrication system. It ensures the sealing performance of the lubrication system, thereby improving the lubrication effect and system reliability, and preventing lubricating oil waste and the ingress of external impurities.

[0029] An upper sealing ring 13 and a lower sealing ring 14 are also provided between the drive shaft 1 and the bushing 3. The upper sealing ring 13 is located on the upper part of the drive shaft 1, and the lower sealing ring 14 is located on the lower part of the drive shaft 1. The arrangement of these two sealing rings further enhances the sealing performance between the drive shaft 1 and the bushing 3. They can not only effectively prevent lubricating oil from leaking from the gap between the drive shaft 1 and the bushing 3, but also prevent external impurities from entering the lubrication system. This double sealing design ensures the clean and efficient operation of the lubrication system, further improving the reliability and stability of the entire lubrication structure.

[0030] A second oil seal 11 and a third oil seal 12 are respectively installed at the top and bottom of the bushing 3, with the second oil seal 11 installed in the middle of the bushing 3. This design effectively isolates the lubricating oil inside the bushing 3, preventing leakage or mixing of lubricating oil inside the bushing 3. The installation of the second oil seal 11 and the third oil seal 12 further improves the sealing performance and reliability of the lubrication system, providing a strong guarantee for the efficient operation of the entire trapezoidal thread lubrication structure. Through this multi-seal design, it is possible to effectively prevent the waste of lubricating oil and the entry of external impurities, ensuring the stable operation of the lubrication system.

[0031] A retaining ring 8 is provided below the second bearing 5, and the bushing 3 adopts a stepped structure. The retaining ring 8 effectively prevents axial displacement of the second bearing 5 during operation, thereby ensuring stable bearing operation. This design, through the limiting effect of the retaining ring 8, provides reliable axial support for the second bearing 5, avoiding bearing position displacement caused by axial force, and thus ensuring the smoothness and reliability of the entire transmission system.

[0032] Example 2: Refer to Figures 1 to 3 A trapezoidal thread lubrication structure is mainly composed of a drive shaft 1, an upper seat 6, and a lower seat 9. Trapezoidal threads are machined on the contacting sides of the upper seat 6 and the lower seat 9. This thread design allows the upper seat 6 and the lower seat 9 to be screwed together via the trapezoidal threads; specifically, the upper seat 6 screws onto the lower seat 9, forming a tight and stable connection. This connection method not only ensures structural stability but also facilitates installation and disassembly, improving maintenance convenience.

[0033] On one side of the upper seat 6, a dedicated oil inlet 7 is provided. This inlet 7 is used to add lubricating oil into the lubrication structure to ensure the normal operation of the lubrication system. An oil passage 71 is connected to one side of the oil inlet 7. The lubricating oil is guided through the oil passage 71 to the trapezoidal thread of the lubrication structure, thus lubricating the trapezoidal thread. This design ensures uniform distribution of the lubricating oil and improves the lubrication effect.

[0034] At the midpoint between the upper seat 6 and the lower seat 9, a drive shaft 1 is installed. The drive shaft 1 is a key component in the entire lubrication structure, responsible for transmitting power. To protect the drive shaft 1 and reduce friction between it and surrounding components, a bushing 3 is provided on the outer side of the drive shaft 1. The bushing 3 serves to isolate and lubricate, while also helping to improve the operating efficiency and stability of the entire lubrication structure.

[0035] The oil passage 71 is designed in an L-shape. This L-shaped oil passage structure has unique advantages, allowing lubricating oil to enter the interior of the lubrication structure more smoothly and ensuring that the lubricating oil is evenly distributed to all parts that require lubrication. An oil plug 72 is installed at one end of the oil passage 71. The design of the oil plug 72 not only facilitates the addition and replacement of lubricating oil, but also effectively prevents lubricating oil leakage when not in use, thereby ensuring the effective operation of the lubrication system, extending the service life of the lubricating oil, and reducing maintenance costs.

[0036] The upper seat 6 has a first bearing 4 connected to its top side, while the lower seat 9 has a second bearing 5 connected to its bottom side. The arrangement of the first bearing 4 and the second bearing 5 is crucial for the stable operation of the entire lubrication structure. They effectively support the drive shaft 1, keeping it stable during operation and reducing vibration and wear. This design not only improves the operating accuracy of the drive shaft 1 but also extends its service life, thereby enhancing the reliability and stability of the entire mechanical transmission system.

[0037] Drive shaft 1 is connected to first bearing 4 and second bearing 5 via bushing 3. This connection method has significant advantages, allowing drive shaft 1 to operate smoothly under the protection of bushing 3. Bushing 3 not only acts as an isolation element, preventing direct contact between drive shaft 1 and bearings and thus reducing friction, but also provides lubrication, further reducing wear between drive shaft 1 and bearings. This design not only improves the operating efficiency of drive shaft 1 but also extends the service life of bearings and reduces maintenance costs.

[0038] A first oil seal 2 is embedded on the side of the bushing 3 that contacts the upper seat 6. The first oil seal 2 is pressed between the bushing 3 and the upper seat 6 through an interference fit. This interference fit ensures a tight seal between the first oil seal 2, the bushing 3, and the upper seat 6, effectively preventing lubricating oil leakage from the contact area between the bushing 3 and the upper seat 6. The first oil seal 2 is crucial for the sealing performance of the lubrication system. It ensures the sealing performance of the lubrication system, thereby improving the lubrication effect and system reliability, and preventing lubricating oil waste and the ingress of external impurities.

[0039] An upper sealing ring 13 and a lower sealing ring 14 are also provided between the drive shaft 1 and the bushing 3. The upper sealing ring 13 is located on the upper part of the drive shaft 1, and the lower sealing ring 14 is located on the lower part of the drive shaft 1. The arrangement of these two sealing rings further enhances the sealing performance between the drive shaft 1 and the bushing 3. They can not only effectively prevent lubricating oil from leaking from the gap between the drive shaft 1 and the bushing 3, but also prevent external impurities from entering the lubrication system. This double sealing design ensures the clean and efficient operation of the lubrication system, further improving the reliability and stability of the entire lubrication structure.

[0040] A second oil seal 11 and a third oil seal 12 are respectively installed at the top and bottom of the bushing 3, with the second oil seal 11 installed in the middle of the bushing 3. This design effectively isolates the lubricating oil inside the bushing 3, preventing leakage or mixing of lubricating oil inside the bushing 3. The installation of the second oil seal 11 and the third oil seal 12 further improves the sealing performance and reliability of the lubrication system, providing a strong guarantee for the efficient operation of the entire trapezoidal thread lubrication structure. Through this multi-seal design, it is possible to effectively prevent the waste of lubricating oil and the entry of external impurities, ensuring the stable operation of the lubrication system.

[0041] This trapezoidal thread lubrication structure, through rational design and optimization, achieves effective lubrication and sealing of drive shaft 1, improving the stability and reliability of the system. It is suitable for various mechanical transmission applications requiring high-precision and high-reliability lubrication, significantly improving the operating efficiency and service life of mechanical transmission systems, reducing maintenance costs, and has broad application prospects.

[0042] The lower seat 9 has a convex structure. This design provides more stable support when the lower seat 9 mates with the upper seat 6, and also facilitates the distribution and flow of lubricating oil inside the lower seat 9. The convex structure also enhances the overall strength of the lower seat 9, allowing it to maintain good performance and stability even under heavy loads.

[0043] The connecting thread between the upper seat 6 and the lower seat 9 is trapezoidal. Trapezoidal threads possess high strength and excellent self-locking properties, ensuring a tight and stable connection between the upper seat 6 and the lower seat 9. Furthermore, the larger pitch of the trapezoidal thread provides a larger contact area, resulting in better load-bearing capacity when transmitting larger loads, while also contributing to improved reliability and service life of the entire lubrication structure.

[0044] Below the second bearing 5 is the shaft retaining ring 8, and the bushing 3 has a stepped structure. The shaft retaining ring 8 effectively prevents axial displacement of the second bearing 5 during operation, thereby ensuring stable bearing operation.

[0045] The stepped structure design of bushing 3 can better accommodate drive shafts 1 of different diameters, while providing better lubrication and sealing at each stepped section of bushing 3. This structure not only improves the adaptability and reliability of the lubrication system, but also effectively reduces lubricant leakage, ensuring the efficient operation of the lubrication system.

[0046] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

Claims

1. A trapezoidal thread lubrication structure, characterized in that, It includes an upper seat and a lower seat. The contact side of the upper seat and the lower seat are both trapezoidal threads. The upper seat is screwed onto the lower seat. One side of the upper seat is an oil inlet, and the oil inlet side is connected to the oil passage. The upper and lower seats are connected by a drive shaft, and a bushing is provided on the outside of the drive shaft. The first bearing is connected to the top side of the upper seat, and the second bearing is connected to the bottom side of the lower seat.

2. The trapezoidal thread lubrication structure according to claim 1, characterized in that, The oil passage is L-shaped, with an oil plug at one end.

3. The trapezoidal thread lubrication structure according to claim 1, characterized in that, The drive shaft is connected to the first and second bearings by a bushing.

4. A trapezoidal thread lubrication structure according to claim 1 or 3, characterized in that, The first oil seal is embedded on the side of the bushing that contacts the upper seat, and the first oil seal is press-fitted between the bushing and the upper seat.

5. A trapezoidal thread lubrication structure according to claim 1 or 3, characterized in that, An upper sealing ring and a lower sealing ring are provided between the drive shaft and the bushing. The upper sealing ring is located on the upper part of the drive shaft, and the lower sealing ring is located on the lower part of the drive shaft.

6. The trapezoidal thread lubrication structure according to claim 5, characterized in that, A second oil seal and a third oil seal are respectively installed at the top and bottom of the bushing, with the second oil seal installed in the middle of the bushing.

7. A trapezoidal thread lubrication structure according to claim 1 or 6, characterized in that, The lower part has an overall convex structure.

8. A trapezoidal thread lubrication structure according to claim 1 or 6, characterized in that, The connecting thread between the upper and lower seats is trapezoidal.

9. A trapezoidal thread lubrication structure according to claim 2, characterized in that, Below the second bearing is a retaining ring for the shaft, and the bushing has a stepped structure.

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