Open gear automatic lubricating device

Abstract

The invention discloses an automatic lubricating device for an exposed gear, and relates to the technical field of mechanical lubrication. A supporting shaft parallel to a main shaft is arranged in a sealing cover, and a lubricating gear meshed with the exposed gear is rotationally mounted on a shaft body of the supporting shaft; a through hole and a blind hole which are arranged in the radial direction of the supporting shaft are formed in the contact face of the lubricating gear and the supporting shaft, the end of the supporting shaft extends out of the sealing cover, and an oil adding channel which is arranged in the axial direction of the supporting shaft is arranged on the end face of the end close to the lubricating gear. The contact surface of the supporting shaft and the lubricating gear is provided with an oil filling hole which is communicated with the oil filling passage and corresponds to the blind hole, the contact surface of the supporting shaft and the lubricating gear is also provided with an oil conveying groove which is arranged along the axial direction of the supporting shaft, and the two ends of the oil conveying groove are respectively and correspondingly communicated with the through hole and the blind hole up and down; by means of the device, uniform and efficient lubricating smearing can be conducted on the tooth surface of the open gear, and the discharge amount of lubricating grease is automatically adjusted and controlled along with the rotating speed of the open gear.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical lubrication, and in particular to an automatic lubrication device for open gears. Background Art

[0002] As is known, during the long-term use of open gear transmission parts, since most of the open gears are exposed to the outside, in order to ensure the transmission accuracy of the open gear transmission parts and extend the service life of the open gear transmission parts, it is usually necessary to lubricate the open gear transmission parts. The existing lubrication methods are either manual application of lubricating grease or automatic lubrication using an electric lubrication device. These lubrication methods still have the following shortcomings in actual use: 1. The manual application of lubricating grease is not only time-consuming and laborious, but also poses a great safety hazard if it is applied during the rotation of the gear. If the machine is stopped for lubrication, it will affect the normal operation of the open gear, which is very inconvenient. 2. Existing electric lubrication devices generally use an oil pipe for dripping oil. This lubrication method will always perform dripping oil lubrication regardless of whether the open gear is rotating, which easily causes a great waste of lubricating grease; 3. The existing electric lubrication device adopts the method of dripping oil, which can only perform dripping oil lubrication on the local gear, and cannot evenly and effectively apply lubricating grease to the tooth surface of the open gear, and the lubrication effect is not ideal; Therefore, there is an urgent need for an open gear automatic lubrication device that can overcome the above-mentioned shortcomings. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses an automatic lubrication device for open gears. The present invention avoids the traditional manual smearing or electric centralized lubrication method, and utilizes the lubrication gear meshing with the open gear, which can not only realize uniform and efficient lubrication of the tooth surface of the open gear, but also the discharge amount of the lubricating grease is automatically regulated with the rotation speed of the open gear, effectively avoiding the waste of the lubricating grease.

[0004] To achieve the above object, the present invention adopts the following technical solutions: An open gear automatic lubrication device comprises a sealing cover, wherein a main shaft is arranged in the sealing cover, an open gear is arranged on the main shaft body, a supporting shaft parallel to the main shaft is arranged in the sealing cover, a lubricating gear meshing with the open gear is rotatably mounted on the supporting shaft body, a through hole and a blind hole arranged along the radial direction of the supporting shaft are respectively arranged on the contact surface between the lubricating gear and the supporting shaft, the through hole and the blind hole are parallel to each other and are arranged at intervals along the axial direction of the supporting shaft, a nylon piston is arranged in the blind hole, a spring for elastically pushing the nylon piston to move is arranged between the nylon piston and the inner bottom surface of the blind hole, an oil storage tank is formed between the nylon piston and the orifice of the blind hole, an end portion of the supporting shaft protrudes out of the sealing cover, and an oil filling passage arranged along the axial direction of the supporting shaft is arranged on an end surface close to the lubricating gear, an oil filling hole connected to the oil filling passage and corresponding to the blind hole is arranged on the contact surface between the supporting shaft and the lubricating gear, and lubricating grease is injected into the oil storage tank corresponding to the blind hole through the oil filling passage and the oil filling hole in turn, and a spring is arranged along the support shaft on the contact surface between the supporting shaft and the lubricating gear. An oil delivery groove is arranged axially on the support shaft, and the oil delivery groove and the oil filling hole are arranged at intervals along the circumference of the support shaft. The two ends of the oil delivery groove are respectively connected with the through hole and the blind hole correspondingly up and down. The lubricating grease in the oil storage tank enters the through hole through the oil delivery groove by the push of the spring and the nylon piston. The lubricating grease in the through hole is discharged outwardly with the centrifugal force generated by the rotation of the lubrication gear and lubricates the meshing open gear. A calibration mechanism for real-time display of the position of the blind hole is also provided on the outside of the sealing cover. The calibration mechanism includes a disc, a transmission gear, an indicator mark and a connecting rod. A disc is rotatably installed on the outer surface of the sealing cover on the same side as the protruding end of the support shaft and parallel to the lubrication gear. A connecting rod is provided on the back surface of the disc, which is coaxial with the disc and rotates through the inside of the sealing cover. A transmission gear meshing with the lubrication gear is provided on the end of the connecting rod. An indicator mark is provided on the outer surface of the disc coaxially with the blind hole. During the synchronous rotation process of the disc and the lubrication gear, the indicator mark on the surface of the disc is always coaxial with the blind hole.

[0005] Furthermore, a mounting groove is provided on one side of the hole opening on the lubrication gear tooth surface of the through hole, and an oil level monitoring mechanism for real-time monitoring of the lubricating grease content in the through hole is provided in the mounting groove.

[0006] Furthermore, the oil level monitoring mechanism includes an oil level sensor, a battery and a wireless signal transmitter.

[0007] Furthermore, a refueling nozzle for connecting to a refueling device is provided at the outer end of the refueling passage.

[0008] Furthermore, an outer end surface of the refueling passage is provided with an indicating arrow coaxially arranged with the oil filling hole.

[0009] Furthermore, a sealing ring arranged around the blind hole opening is embedded on the contact surface between the lubrication gear and the support shaft.

[0010] Furthermore, both ends of the center hole of the lubrication gear are provided with enlarged diameter openings, and bearings matching with the support shaft are arranged in the enlarged diameter openings.

[0011] Furthermore, both end surfaces of the lubrication gear are provided with bearing sealing covers which are sleeved on the support shaft body and are used to block and limit the bearing.

[0012] Furthermore, a clamping groove is provided at the end of the support shaft protruding out of the sealing cover, and a clamping plate connected to the sealing cover and used for limiting and fixing the support shaft is inserted into the clamping groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The oil injection holes and oil delivery grooves are arranged at intervals along the circumference of the support shaft, avoiding the synchronous injection and discharge of lubricating grease in the traditional lubrication process, realizing the distributed operation of oil injection and oil discharge, and effectively avoiding the waste of lubricating grease; Through the meshing open gear and lubricating gear, not only can the lubricating grease be discharged and applied only when the open gear is rotating, but the amount of lubricating grease discharged can also be automatically adjusted with the rotation speed of the open gear; By setting up the oil filling passage, oil filling hole and oil storage tank, temporary storage of lubricating grease can be achieved in the lubricating gear, providing strong support for the subsequent delivery and discharge of lubricating grease; By setting the spring and nylon piston, the lubricating grease in the oil storage tank can be squeezed and delivered in an elastic and appropriate amount, so that the staff can control the output amount of the lubricating grease according to the injection amount of the lubricating grease; By setting the through hole, the grease can be discharged only with the centrifugal force generated by the rotation of the lubricating gear, which not only ensures the comprehensive lubrication of the open gear, but also effectively reduces the waste of grease. By setting the calibration mechanism and the indicating arrow, the staff can clearly and intuitively understand the position of the blind hole, so that in the subsequent process of filling oil into the oil storage tank, the staff can conveniently and efficiently complete the calibration correspondence between the oil filling hole and the oil storage tank; By setting up an oil level monitoring mechanism, the content of lubricating grease in the through hole can be monitored in real time, thereby avoiding affecting the subsequent lubrication operation of the open gear due to insufficient lubricating grease in the through hole; The present invention avoids the traditional manual smearing or electric centralized lubrication method, and utilizes the lubrication gear meshing with the open gear, which can not only realize the uniform and efficient lubrication of the tooth surface of the open gear, but also the discharge amount of the lubricating grease is automatically regulated with the rotation speed of the open gear; the present invention has a simple structure and is easy to operate and use. It not only greatly improves the lubrication efficiency and lubrication effect of the open gear, but also greatly reduces the waste of lubricating grease, and has extremely high practical value and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the lubrication gear structure of the present invention; Figure 3 This is a schematic diagram of the oil inlet state of the lubricating gear of the present invention; Figure 4 It is a schematic diagram of the oil discharge state of the lubricating gear of the present invention.

[0015] In the figure: 1. Sealing cover; 2. Calibration mechanism; 3. Lubrication gear; 4. Support shaft; 5. Open gear; 6. Main shaft; 7. Mounting groove; 8. Oil level detection mechanism; 9. Through hole; 10. Blind hole; 11. Expansion opening; 12. Transmission gear; 13. Disc; 14. Indicator mark; 15. Connecting rod; 16. Spring; 17. Nylon piston; 18. Bearing; 19. Clamping plate; 20. Oil storage tank; 21. Oil nozzle; 22. Oiling passage; 23. Oil filling hole; 24. Oil delivery tank; 25. Bearing sealing cover. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0017] Please refer to the instruction manual Figure 1-4 , the present invention provides a technical solution: Embodiment 1, an open gear automatic lubrication device, including a sealing cover 1, a main shaft 6 is provided in the sealing cover 1, an open gear 5 is provided on the shaft body of the main shaft 6, a support shaft 4 parallel to the main shaft 6 is provided in the sealing cover 1, a lubricating gear 3 meshing with the open gear 5 is rotatably mounted on the shaft body of the support shaft 4, a through hole 9 and a blind hole 10 arranged along the radial direction of the support shaft 4 are respectively provided on the contact surface between the lubricating gear 3 and the support shaft 4, the through hole 9 and the blind hole 10 are parallel to each other and arranged at intervals along the axial direction of the support shaft 4, one end of the through hole 9 corresponds to the support shaft 4, and the other end passes through to the tooth surface of the lubricating gear 3, a nylon piston 17 is provided in the blind hole 10, a spring 16 for elastically pushing the nylon piston 17 to move is provided between the nylon piston 17 and the inner bottom surface of the blind hole 10, and an oil storage tank is formed between the nylon piston 17 and the orifice of the blind hole 10 20, the end of the support shaft 4 protrudes out of the sealing cover 1, and is provided with a refueling passage 22 arranged along the axial direction of the support shaft 4 on the end surface close to the lubricating gear 3, and a refueling nozzle 21 for connecting the oil filling device is provided at the outer end of the refueling passage 22. An oil filling hole 23 connected to the refueling passage 22 and corresponding to the blind hole 10 is provided on the contact surface between the support shaft 4 and the lubricating gear 3. The oil filling hole 23 and the blind hole 10 are connected or disconnected at intervals as the lubricating gear 3 rotates. An oil delivery groove 24 arranged along the axial direction of the support shaft 4 is also provided on the contact surface between the support shaft 4 and the lubricating gear 3. The oil delivery groove 24 and the oil delivery hole 23 are arranged at intervals along the circumferential direction of the support shaft 4. The two ends of the oil delivery groove 24 are respectively connected with the through hole 9 and the blind hole 10 correspondingly up and down. The oil delivery groove 24 and the through hole 9 and the blind hole 10 are connected or disconnected at intervals as the lubricating gear 3 rotates; When injecting lubricating grease, the lubricating grease is injected through the refueling passage 22, and the lubricating grease is injected into the blind hole 10 through the refueling passage 22 and the oil filling hole 23 in sequence. As the lubricating grease is injected, the lubricating grease pushes the nylon piston 17 to move upward, and the lubricating grease enters the oil storage tank 20 for temporary storage; The rotation of the open gear 5 drives the lubricating gear 3 to rotate accordingly. When the through hole 9 and the blind hole 10 rotate to correspond to the oil delivery groove 24, the lubricating grease in the oil storage groove 20 is pushed into the oil delivery groove 24 via the spring 16 and the nylon piston 17. In order to prevent the lubricating grease from spreading to the support shaft 4 during the pushing process, a sealing ring arranged around the orifice of the blind hole 10 is embedded and installed on the contact surface between the lubricating gear 3 and the support shaft 4, and is transported to the through hole 9 via the oil delivery groove 24. As the open gear 5 drives the lubricating gear 3 to rotate continuously, the lubricating grease in the through hole 9 is mainly discharged outward by the centrifugal force generated by the rotation of the lubricating gear 3 and a small amount by the thrust of the nylon piston 17. Finally, the lubricating grease is discharged to the tooth surface of the lubricating gear 3 via the through hole 9. As the lubricating gear 3 and the open gear 5 are meshed and transmitted, the lubricating grease can be evenly applied to the tooth surface of the open gear 5. When the speed of the open gear 5 is low or does not rotate, the corresponding lubricating grease in the through hole 9 will also be less discharged or not discharged, which effectively avoids the waste of lubricating grease.

[0018] Embodiment 2: During the oil filling operation, in order to ensure that the lubricating grease can be accurately delivered to the oil storage tank 20, it is necessary to ensure that the oil storage tank 20 corresponds to the oil filling hole 23. Since the support shaft 4 is fixed, the position of the oil filling hole 23 remains unchanged, and the staff needs to clearly understand the position of the oil storage tank 20. For this reason, a calibration mechanism 2 for real-time display of the position of the blind hole 10 is also provided on the outside of the sealing cover 1. Specifically, the calibration mechanism 2 includes a disc 13, a transmission gear 12, an indicator mark 14 and a connecting rod 15. The outer surface of the sealing cover 1 is rotatably mounted with a disc 13 which is on the same side as the protruding end of the support shaft 4 and is parallel to the lubrication gear 3. The back surface of the disc 13 is provided with a The disc 13 is coaxially arranged with a connecting rod 15 that rotates and penetrates the inside of the sealing cover 1. The end of the connecting rod 15 is provided with a transmission gear 12 that meshes with the lubrication gear 3. The outer surface of the disc 13 is provided with an indication mark 14 that is coaxially arranged with the blind hole 10. By setting the transmission gear 12 to a gear ratio that is equal to the lubrication gear 3, when the lubrication gear 3 rotates one circle, the transmission gear 12 also rotates one circle. During the synchronous rotation process of the corresponding disc 13 and the lubrication gear 3, the indication mark 14 on the surface of the disc 13 is always coaxial with the blind hole 10. By observing the indication mark 14, the staff can clearly understand the position of the blind hole 10, thereby determining whether the blind hole 10 corresponds to the oil filling hole 23.

[0019] In the third embodiment, since the oil filling hole 23 is located inside the sealing cover 1, although the position of the oil filling hole 23 remains unchanged, the staff cannot see it intuitively. During the installation of the support shaft 4, the position of the oil filling hole 23 may be offset, thereby affecting the corresponding adjustment of the oil filling hole 23 and the blind hole 10 during the subsequent oil filling process. For this reason, an indicator arrow is provided on the outer end face of the oil filling passage 22 coaxially with the oil filling hole 23. By passing through the corresponding relationship between the indicator arrow and the indicator mark 14 in the calibration mechanism 2, the corresponding relationship between the oil filling hole 23 and the blind hole 10 can be intuitively understood.

[0020] Embodiment 4, in order to enable the staff to clearly understand the content of lubricating grease in the through hole 9, and then remind the staff to replenish the lubricating grease in time, a mounting groove 7 is provided on the through hole 9 on one side of the hole opening located on the tooth surface of the lubricating gear 3, and an oil level monitoring mechanism 8 for real-time monitoring of the content of lubricating grease in the through hole 9 is provided in the mounting groove 7. Specifically, the oil level monitoring mechanism 8 includes an oil level sensor, a battery and a wireless signal transmitter. The oil level sensor can monitor the content of lubricating grease in the through hole 9 in real time. When the oil level sensor cannot sense the lubricating grease, the oil level sensor sends the sensing signal through the wireless signal transmitter. A warning light that is controlled and connected to the wireless signal transmitter can be added to the outside of the sealing cover 1, or the wireless signal transmitter is directly connected to the oil filling device. When the staff observes the warning light or the warning reminder issued by the oil filling device, it means that there is a lack of lubricating grease in the through hole 9 and the oil filling operation needs to be performed in time.

[0021] Embodiment 5, in order to achieve stable installation of the lubricating gear 3, both ends of the center hole of the lubricating gear 3 are provided with an enlarged diameter opening 9, and a bearing 16 matching the support shaft 4 is arranged in the enlarged diameter opening 9, and both end faces of the lubricating gear 3 are provided with a bearing sealing cover 25 which is sleeved on the shaft body of the support shaft 4 and is used to block and limit the bearing 16. The end of the support shaft 4 protruding from the sealing cover 1 is provided with a groove, and a clamping plate 19 connected to the sealing cover 1 and used to limit and fix the support shaft 4 is inserted in the groove.

[0022] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. An open gear automatic lubrication device, comprising a sealing cover (1), a main shaft (6) is arranged in the sealing cover (1), and an open gear (5) is arranged on the shaft of the main shaft (6), characterized in that: A support shaft (4) parallel to the main shaft (6) is provided in the sealing cover (1). A lubricating gear (3) meshing with the open gear (5) is rotatably mounted on the shaft body of the support shaft (4). A through hole (9) and a blind hole (10) arranged along the radial direction of the support shaft (4) are respectively provided on the contact surface between the lubricating gear (3) and the support shaft (4). The through hole (9) and the blind hole (10) are parallel to each other and arranged at intervals along the axial direction of the support shaft (4). A nylon piston (17) is provided in the blind hole (10). A spring (16) for elastically pushing the nylon piston (17) to move is provided between the nylon piston (17) and the inner bottom surface of the blind hole (10). The nylon piston (17) and the blind hole (10) are connected to the opening of the blind hole (10). An oil storage tank (20) is formed between the support shaft (4), the end of the support shaft (4) protrudes out of the sealing cover (1), and an oil filling passage (22) arranged along the axial direction of the support shaft (4) is provided on an end surface close to the lubricating gear (3), and an oil filling hole (23) connected to the oil filling passage (22) and corresponding to the blind hole (10) is provided on the contact surface between the support shaft (4) and the lubricating gear (3). Lubricating grease is sequentially injected into the oil storage tank (20) corresponding to the blind hole (10) through the oil filling passage (22) and the oil filling hole (23). An oil delivery groove (24) arranged along the axial direction of the support shaft (4) is also provided on the contact surface between the support shaft (4) and the lubricating gear (3). The oil delivery groove (24) and the oil filling hole (23) are connected to each other. 23) are arranged at intervals along the circumference of the support shaft (4), and the two ends of the oil delivery groove (24) are respectively connected to the through hole (9) and the blind hole (10) at the upper and lower sides. The lubricating grease in the oil storage groove (20) enters the through hole (9) through the oil delivery groove (24) by the spring (16) and the nylon piston (17). The lubricating grease in the through hole (9) is discharged outward with the centrifugal force generated by the rotation of the lubricating gear (3) and lubricates the meshing open gear (5). The outer side of the sealing cover (1) is also provided with a calibration mechanism (2) for real-time display of the position of the blind hole (10), and the calibration mechanism (2) includes a disc (13), a transmission gear (12), an indicator mark (14) and a connecting rod (15). A connecting rod (15) is provided on the outer surface of the sealing cover (1), and a disc (13) is rotatably mounted on the same side as the protruding end of the support shaft (4) and arranged parallel to the lubrication gear (3). A connecting rod (15) is provided on the back surface of the disc (13) and is coaxially arranged with the disc (13) and rotatably penetrates into the interior of the sealing cover (1). A transmission gear (12) meshing with the lubrication gear (3) is provided at the end of the connecting rod (15). An indication mark (14) is provided on the outer surface of the disc (13) and is coaxially arranged with the blind hole (10). During the synchronous rotation process of the disc (13) and the lubrication gear (3), the indication mark (14) on the surface of the disc (13) is always coaxial with the blind hole (10).

2. The automatic lubrication device for open gears according to claim 1, characterized in that: A mounting groove (7) is provided on one side of the opening of the through hole (9) located on the tooth surface of the lubrication gear (3), and an oil level monitoring mechanism (8) for real-time monitoring of the lubricating grease content in the through hole (9) is provided in the mounting groove (7).

3. The automatic lubrication device for open gears according to claim 2 is characterized in that: The oil level monitoring mechanism (8) comprises an oil level sensor, a battery and a wireless signal transmitter.

4. The automatic lubrication device for open gears according to claim 1, characterized in that: An outer end of the refueling passage (22) is provided with a refueling nozzle (21) for connecting to a refueling device.

5. The automatic lubrication device for open gears according to claim 4 is characterized in that: An outer end surface of the oil filling passage (22) is provided with an indicating arrow coaxially arranged with the oil filling hole (23).

6. The automatic lubrication device for open gears according to claim 1, characterized in that: A sealing ring arranged around the opening of the blind hole (10) is embedded and installed on the contact surface between the lubrication gear (3) and the support shaft (4).

7. The open gear automatic lubrication device according to claim 1, characterized in that: Both ends of the central hole of the lubricating gear (3) are provided with enlarged diameter openings (9), and bearings (16) matching with the support shaft (4) are provided in the enlarged diameter openings (9).

8. The automatic lubrication device for open gears according to claim 7, characterized in that: The end surfaces at both ends of the lubrication gear (3) are provided with bearing sealing covers (25) which are sleeved on the shaft body of the support shaft (4) and are used to block and limit the bearing (16).

9. The automatic lubrication device for open gears according to claim 1, characterized in that: The end of the support shaft (4) protruding out of the sealing cover (1) is provided with a clamping groove, and a clamping plate (19) connected to the sealing cover (1) and used for limiting and fixing the support shaft (4) is inserted into the clamping groove.

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