External lubricating structure of vertical speed reducer

Abstract

The external lubricating structure comprises the vertical speed reducer and an oil supply device, the upper end and the lower end of the vertical speed reducer are provided with an oil inlet and an oil outlet respectively, the oil supply device comprises an external oil tank and an oil pump, and the external oil tank is provided with a liquid level height gauge, an oil return port and an oil feeding port. The oil return port is lower than the oil outlet and communicated with the oil outlet through an oil return pipe, the oil feeding port is lower than the oil return port and communicated with the oil inlet through an oil feeding pipe, and the oil pump is arranged in the external oil tank and communicated with the oil feeding port. All transmission parts in the vertical speed reducer are lubricated by lubricating oil from top to bottom, so that the situation that the transmission parts are damaged due to insufficient lubrication or lack of lubrication can be avoided; in the operation process, most lubricating oil is located in the external oil tank, the liquid level height and the color of the lubricating oil can be accurately observed through the liquid level height gauge, lubricating liquid can be supplemented and replaced in time, and stable operation of the external lubricating structure of the vertical speed reducer is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of transmission lubrication in mechanical engineering, and specifically relates to an external lubrication structure for a vertical reducer. Background Technology

[0002] In the glass manufacturing industry, in order to meet the driving requirements of equipment and due to the limitation of installation space, it is often necessary to set up a vertical motor and use a vertical reducer as the power source for the equipment. The use of vertical reducers is inseparable from lubricating oil, which can reduce the wear of transmission gears and bearings inside the vertical reducer, thereby increasing the service life of the vertical reducer.

[0003] Currently, vertical reducers generally use oil bath lubrication, which means that the inside of the vertical reducer is filled with lubricating oil, so that the transmission gears and bearings inside the vertical reducer are immersed in the lubricating oil. However, this not only creates greater resistance to the operation of the vertical reducer and affects its transmission efficiency, but also makes it prone to oil leakage due to the increase in internal temperature and pressure during operation, resulting in poor reliability. Some vertical reducers employ circulating lubrication, where lubricating oil is filled in the lower part of the reducer. During operation, the lower transmission gears or oil-throwing components engage with oil grooves or guide channels on the inner wall to transfer some of the lubricating oil to the top of the reducer, thus lubricating all transmission components from top to bottom. An example is the oil-throwing and oil-storage lubricating bearing reducer disclosed in Chinese Patent CN209743555U. However, this lubrication method not only requires high speeds for the transmission gears or oil-throwing components, making it unsuitable for low-speed, high-load applications, but also, after prolonged use, the oil grooves or guide channels on the inner wall are prone to blockage due to increased lubricating oil viscosity, leading to insufficient or inadequate lubrication of the transmission components in the upper part of the reducer. Furthermore, in both lubrication methods, the lubricating oil inside the vertical reducer is subject to more intense disturbances from the transmission gears and oil-throwing components. It is difficult to accurately monitor the oil level using the oil level window and gauge, making it easy to fail to detect and replenish lubricating oil in a timely manner, potentially causing damage to transmission components. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an external lubrication structure for a vertical reducer, solve the technical problem of poor reliability of the current lubrication method for vertical reducers, and achieve the effect of improving the operational reliability and stability of the vertical reducer.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An external lubrication structure for a vertical reducer includes a vertical reducer and an oil supply device. The vertical reducer has an oil inlet and an oil outlet. The oil inlet is connected to the upper end of the inner cavity of the vertical reducer, and the oil outlet is connected to the lower end of the inner cavity of the vertical reducer. The oil supply device includes an external oil tank and an oil pump. The external oil tank is equipped with a liquid level gauge, an oil return port, and an oil delivery port. The oil return port is lower than the oil outlet and is connected to the oil outlet through a oil return pipe. The oil delivery port is lower than the oil return port and is connected to the oil inlet through an oil delivery pipe. The oil pump is located inside the external oil tank and is connected to the oil delivery port, or is located on the oil delivery pipe and close to the oil delivery port.

[0007] Furthermore, a level switch is installed inside the external oil tank, which is electrically connected to an alarm to provide a low level alarm.

[0008] Furthermore, the liquid level switch includes a rod, on which a liquid level float is slidably connected. An upper limit block and a lower limit block are fixedly connected to the upper and lower sides of the liquid level float, respectively. The liquid level switch is electrically connected to an alarm, which is triggered when the liquid level float contacts the lower limit block.

[0009] Furthermore, the level switch is threaded into the mounting hole on the top of the external oil tank, the rod of the level switch extends into the external oil tank, the level float is slidably connected to the rod, the lower limit block is higher than the oil inlet, and the upper limit block is located above the lower limit block.

[0010] Furthermore, the level switch is electrically connected to the PLC controller, and the PLC controller is connected to an audible and visual alarm. The alarm is triggered when the level float touches the lower limit block.

[0011] Furthermore, the external fuel tank is equipped with a filler neck, and a removable fuel tank cap is provided at the filler neck.

[0012] Furthermore, the filler port is located on the upper surface of the external fuel tank. The fuel tank cap includes a cylindrical plug and a circular cap with a diameter larger than the outer diameter of the plug. The plug is threaded to the filler port, and the cap forms an annular pressure relief channel with the plug through a radially extending connecting part.

[0013] Furthermore, the lower edge of the cap has a downwardly protruding retaining ring, the lower end of which is lower than the upper end of the plug, and the retaining ring extends downward and surrounds the pressure relief channel.

[0014] Furthermore, an oil drain port is provided near the bottom of the external oil tank, and a removable end cap is provided at the oil drain port.

[0015] Furthermore, the external fuel tank has an opening at the top, and a cover plate that can be detachably connected to the top of the external fuel tank covers the opening.

[0016] Furthermore, the oil pump is a rotor type, located on the oil delivery pipe and near the oil delivery port.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the external lubrication structure of the vertical reducer described in this utility model, the lubricating oil lubricates all transmission components inside the vertical reducer from top to bottom, which can avoid damage to the transmission components due to insufficient or lack of lubrication. Since the lubricating oil is stored in an external oil tank, it is difficult to accurately detect the remaining amount in the external oil tank. It is easy for malfunctions to occur due to insufficient lubricating oil, reducing the service life of the vertical reducer. In some cases, complete lack of oil may even lead to severe dry friction of the gears in the vertical reducer, ultimately damaging the gears and causing safety accidents. Therefore, it is essential to ensure that the lubricating oil is always sufficient. During operation, most of the lubricating oil in the external lubrication structure of the vertical reducer described in this utility model is located in the external oil tank. The lubricating oil is relatively stable in the external oil tank. The level and color of the lubricating oil can be accurately observed through a liquid level gauge, so as to replenish and replace the lubricating oil in a timely manner, ensuring the stable operation of the external lubrication structure of the vertical reducer. This effectively solves the problem of poor reliability of current lubrication methods for vertical reducers and is conducive to improving the reliability and stability of the vertical reducer operation.

[0019] 2. In the external lubrication structure of the vertical reducer described in this utility model, the oil pump operates to deliver lubricating oil from the external oil tank to the inner cavity of the vertical reducer through the oil delivery pipe, thereby lubricating the transmission components inside the vertical reducer. After the lubricating oil flows to the lower end of the inner cavity of the vertical reducer, it flows back to the external oil tank through the oil return pipe, thus realizing the recycling of lubricating oil and helping to reduce the cost of use.

[0020] 3. The external lubrication structure of the vertical reducer described in this utility model, by designing the external oil tank and adding a liquid level gauge and liquid level switch, not only makes the use of the external oil tank more convenient, but also makes it easier for the staff to understand the status of the lubricating oil in the external oil tank, thus having good practicality. Attached Figure Description

[0021] Figure 1 This is an axonometric view of the external lubrication structure of the vertical reducer described in the embodiment;

[0022] Figure 2 This is a front view of the external lubrication structure of the vertical reducer described in the embodiment;

[0023] Figure 3 This is a rear view of the external lubrication structure of the vertical reducer described in the embodiment;

[0024] Figure 4 This is a perspective view of the fuel tank cover described in the embodiment;

[0025] Figure 5 This is a front view of the fuel tank cover described in the embodiment;

[0026] Figure 6 for Figure 5 A schematic diagram of the cross-section along the middle AA;

[0027] Figure 7 This is a front view of the float level switch described in the embodiment;

[0028] The components include: 1. Vertical reducer; 2. Motor; 3. Oil supply device; 4. External oil tank; 5. Oil pump; 6. Return oil pipe; 7. Supply oil pipe; 8. Oil tank cover; 9. Liquid level gauge; 10. Plug; 11. Cap; 12. Inner hole; 13. Vent; 14. Pressure relief channel; 15. Connecting part; 16. Retaining ring; 17. End cover; 18. Cover plate; 19. Bolt; 20. Liquid level switch; 21. Head; 22. Rod; 23. Liquid level float; 24. Upper limit block; 25. Lower limit block; 26. Oil inlet; 27. Oil outlet; 28. Return oil port; 29. ​​Supply oil port. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example:

[0031] Please see Figure 1 , Figure 2 and Figure 3 An external lubrication structure for a vertical reducer includes a vertical reducer 1 and an oil supply device 3. The vertical reducer 1 is connected to a vertically arranged motor 2 with its output shaft facing upward. The vertical reducer 1 has an oil inlet 26 and an oil outlet 27. The oil inlet 26 is connected to the upper end of the inner cavity of the vertical reducer 1, and the oil outlet 27 is connected to the lower end of the inner cavity of the vertical reducer 1. The oil supply device 3 includes an external oil tank 4 and an oil pump 5. The external oil tank 4 is equipped with a liquid level gauge 9, an oil return port 28, and an oil delivery port 29. The oil return port 28 is lower than the oil outlet 27 and is connected to the oil outlet 27 through an oil return pipe 6. The oil delivery port 29 is lower than the oil return port 28 and is connected to the oil inlet 26 through an oil delivery pipe 7. The oil pump 5 is located inside the external oil tank 4 and is connected to the oil delivery port 29, or is located on the oil delivery pipe 7 and close to the oil delivery port 29.

[0032] The external lubrication structure for the vertical reducer described in this utility model involves providing an oil inlet 26 and an oil outlet 27 on the vertical reducer 1, connected one-to-one to the upper and lower ends of its internal cavity. The vertical reducer 1 is connected to an external oil supply device 3 via the oil inlet 26. During operation, the oil pump 5 pumps lubricating oil from the external oil tank 4 through the oil delivery pipe 7 and the oil inlet 26 into the internal cavity of the vertical reducer 1, lubricating all transmission components within the reducer 1 from top to bottom. After flowing to the lower end within the internal cavity of the reducer 1, the lubricating oil returns to the external oil tank 4 through the oil outlet 27 and the return oil pipe 6, thus achieving the recycling of the lubricating oil and reducing operating costs. In implementation, the inner diameter of the return oil pipe 6 should be larger than that of the oil delivery pipe 7 to ensure adequate lubrication within the vertical reducer 1. Oil is discharged in a timely manner to ensure stable circulation of lubricating oil. Compared with oil bath lubrication, using this external lubrication structure for the vertical reducer results in less lubricating oil in the internal cavity of the vertical reducer 1. While meeting lubrication requirements, this not only reduces the resistance to the operation of the vertical reducer 1, which is beneficial to improving the transmission efficiency of the vertical reducer 1, but also reduces the internal pressure of the vertical reducer 1 by discharging the lubricating oil from the oil outlet 27, which helps to reduce the possibility of oil leakage and has better reliability. Compared with the circulation lubrication achieved by the internal wall structure and oil slinger of the vertical reducer 1, using this external lubrication structure for the vertical reducer not only does not have speed requirements for the transmission components, but can also be applied to various speed conditions, and is less prone to clogging failure, thus having better stability.

[0033] The external lubrication structure of the vertical reducer described in this utility model allows lubricating oil to lubricate all transmission components inside the vertical reducer 1 from top to bottom, preventing damage to transmission components due to insufficient or lack of lubrication. Since the lubricating oil is stored in the external oil tank 4, it is difficult to accurately determine the remaining amount in the external oil tank 4, which can easily lead to malfunctions due to insufficient lubrication, reducing the service life of the vertical reducer 1. In severe cases, complete lack of oil can cause severe dry friction in the gears of the vertical reducer 1, ultimately damaging the gears and potentially causing a safety accident. Therefore, it is essential to ensure that the lubricating oil is always sufficient. During operation, most of the lubricating oil in the external lubrication structure of the vertical reducer described in this utility model is located in the external oil tank 4. The lubricating oil is relatively stable in the external oil tank 4, and the level and color of the lubricating oil can be accurately observed using a level gauge 9, facilitating timely replenishment and replacement of the lubricating oil and ensuring the stable operation of the external lubrication structure of the vertical reducer. The external lubrication structure of the vertical reducer described in this utility model can effectively solve the problem of poor reliability of the current lubrication method of the vertical reducer 1, and is conducive to improving the reliability and stability of the vertical reducer 1 operation.

[0034] To further enable automatic detection of lubricating oil level and provide lubricating oil replenishment reminders, please refer to [link / reference needed]. Figure 1The external oil tank 4 is equipped with a level switch 20, which is electrically connected to an alarm to provide a low-level alarm. In this way, the level switch 20 detects the liquid level in the external oil tank 4 and sends a signal when the liquid level is low, prompting the alarm to sound. This reminds the staff to check and replenish the lubricating oil in time, thereby ensuring stable operation and improving the reliability and practicality of the external lubrication structure of the vertical reducer.

[0035] Please see Figure 1 and Figure 7 The level switch 20 includes a head 21 and a rod 22. A level float 23 is slidably connected to the rod 22. An upper limit block 24 and a lower limit block 25 are fixedly connected to the upper and lower sides of the level float 23, respectively. The level switch 20 is electrically connected to an alarm. When the level float 23 contacts the lower limit block 25, the alarm is triggered. In this way, the float-type level switch 20 is not only simple and reliable in structure, but also has a low cost.

[0036] Please see Figure 1 and Figure 7 The head 21 of the liquid level switch 20 is threaded into the mounting hole on the top of the external oil tank 4. The rod 22 of the liquid level switch 20 extends into the external oil tank 4. The liquid level float 23 is slidably connected to the rod 22. The lower limit block 25 is higher than the oil inlet 29, and the upper limit block 24 is located above the lower limit block 25.

[0037] In this way, the level switch 20 is threadedly connected to the external oil tank 4 via the head 21, which facilitates installation, disassembly and replacement, and improves the practicality of the external lubrication structure of the vertical reducer. After the rod 22 of the level switch 20 is submerged in the lubricating oil, the level float 23 floats up and down between the upper limit block 24 and the lower limit block 25 with the liquid level, avoiding frequent collisions and abnormal noises caused by the level fluctuations of the level float 23 with the cover plate 18 when the liquid level is high due to the circulation of lubricating oil. When the level float 23 moves down to abut against the lower limit block 25, the level switch 20 sends a signal. In practice, the lower limit block 25 should be higher than the oil inlet 29 to ensure stable operation, and the upper limit block 24 should be higher than the lower limit block 25 and spaced far away from the cover plate 18 or other components to achieve the above-mentioned function of "avoiding abnormal noises".

[0038] In this embodiment, the liquid level switch 20 is electrically connected to the PLC controller, and the PLC controller is connected to the audible and visual alarm. When the liquid level float 23 touches the lower limit block 25, the alarm is triggered. Thus, the PLC is selected as the controller to connect the liquid level switch 20 and the alarm respectively. When the liquid level is low, the liquid level switch 20 sends a signal to the PLC. After receiving the signal, the PLC controls the alarm to be powered on and work.

[0039] Please see Figure 1 and Figure 2An external oil tank 4 has a filler port with a removable oil tank cover 8. In this way, the lubricating oil in the vertical reducer 1 is more likely to be reduced due to oil leakage than that in the horizontal reducer, in addition to normal wear and tear. Therefore, the external oil tank 4 is equipped with a filler port to facilitate the timely or on-demand replenishment of lubricating fluid, ensuring the stable operation of the external lubrication structure of the vertical reducer. The removable oil tank cover 8 at the filler port can prevent dust and foreign objects from entering the external oil tank 4 and contaminating the lubricating oil.

[0040] Please see Figure 4 , Figure 5 and Figure 6 The filler neck is located on the upper surface of the external fuel tank 4. The fuel tank cap 8 includes a cylindrical plug 10 and a circular cap 11 with a diameter larger than the outer diameter of the plug 10. The plug 10 is threaded to the filler neck. The cap 11 forms an annular pressure relief channel 14 with the plug 10 through a radially extending connecting part 15. Specifically, one end of the plug 10 is located inside the filler neck and is threaded to it. The other end is perpendicularly connected to the middle of the cap 11 through the connecting part 15. There is a gap between the cap 11 and the end of the plug 10, forming a vent 13 that communicates with the inner hole 12 of the plug 10. The vent 13 communicates with the inner hole 12 to form a pressure relief channel 14.

[0041] In this way, the oil tank cover 8 is detachable through a threaded connection, making it convenient to use. The oil tank cover 8 is designed to consist of a plug 10 and a cap 11. The cap 11 is used to cover the upper end of the plug 10 to prevent dust and debris from falling directly into the external oil tank 4 through the inner hole 12 of the plug 10. The cap 11 is connected to the plug 10 at intervals through a connecting part 15, and the vent 13 formed therein forms a pressure relief channel 14 with the inner hole 12 of the plug 10. The external oil tank 4 is connected to the external environment through the pressure relief channel 14. The internal pressure of the vertical reducer 1 can be transmitted to the external oil tank 4 through lubricating oil, and then pressure is relieved through the pressure relief channel 14, which is beneficial to the stability of the vertical reducer 1 and the external lubrication structure of the vertical reducer.

[0042] Please see Figure 4 , Figure 5 and Figure 6 The cap 11 has a downwardly protruding retaining ring 16 at its lower edge. The lower end of the retaining ring 16 is lower than the upper end of the plug 10. The retaining ring 16 extends downward and surrounds the pressure relief channel 14. In this embodiment, the connecting part 15 extends radially and connects between the retaining ring 16 and the plug 10. There are multiple connecting parts 15, which are evenly distributed circumferentially. In this way, the cap 11 not only blocks the inner hole 12 of the plug 10 by itself, preventing dust and debris from falling directly into the external oil tank 4 through the inner hole 12 of the plug 10, but also blocks the vent 13 circumferentially by the retaining ring 16, preventing dust and debris from flying laterally into the vent 13. This further improves the dustproof effect of the cap 11 and is conducive to improving the reliability of the external lubrication structure of the vertical reducer.

[0043] Please see Figure 3 An oil drain port is provided near the bottom of the external oil tank 4, and a detachable end cap 17 is provided at the oil drain port. In this way, after the lubricating oil has been used for a long time and its lubricating performance has decreased, the end cap 17 can be opened to allow the waste oil in the external oil tank 4 to be discharged through the oil drain port, which facilitates the replacement of the lubricating oil.

[0044] Please see Figure 1 The external oil tank 4 has an opening at the top, and a cover plate 18 is detachably connected to the top of the external oil tank 4 to cover the opening. In this way, the cover plate 18 can be opened periodically to clean the inner wall of the external oil tank 4, so as to avoid the impact of contaminants adhering and depositing inside the external oil tank 4 on the service life of the lubricating oil, which is beneficial to improving the reliability and practicality of the external lubrication structure of the vertical reducer. In this embodiment, the cover plate 18 is connected to the external oil tank 4 by bolts 19 distributed at the four corners.

[0045] Please see Figure 2 and Figure 3 The oil pump 5 is a rotor type, located on the oil delivery pipe 7 and near the oil delivery port 29. In this way, the rotor type oil pump 5 is not only highly efficient and low in noise, but also has stable flow and strong adaptability, and can be well applied to the delivery of lubricating oil under various working conditions. The oil pump 5 is located outside the external oil tank 4, which also facilitates maintenance and replacement, and helps to improve the practicality of the external lubrication structure of the vertical reducer. In practice, a lubricating oil filter device can also be installed at the oil delivery port 29 inside the external oil tank 4 or in the oil delivery pipe 7 to filter impurities in the lubricating oil before it enters the vertical reducer 1, so as to improve the service life and operating efficiency of the vertical reducer 1.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. An external lubrication structure for a vertical speed reducer, characterized in that: It includes a vertical reducer and an oil supply device. The vertical reducer has an oil inlet and an oil outlet. The oil inlet is connected to the upper end of the inner cavity of the vertical reducer, and the oil outlet is connected to the lower end of the inner cavity of the vertical reducer. The oil supply device includes an external oil tank and an oil pump. The external oil tank is equipped with a liquid level gauge, an oil return port and an oil supply port. The oil return port is lower than the oil outlet and is connected to the oil outlet through a oil return pipe. The oil supply port is lower than the oil return port and is connected to the oil inlet through a oil supply pipe. The oil pump is located inside the external oil tank and is connected to the oil supply port, or it is located on the oil supply pipe and close to the oil supply port.

2. The external lubrication structure for a vertical reducer according to claim 1, characterized in that: The external oil tank is equipped with a level switch, which is electrically connected to an alarm to provide a low level alarm.

3. The external lubrication structure for a vertical reducer according to claim 2, characterized in that: The liquid level switch includes a rod with a liquid level float slidably connected to it. An upper limit block and a lower limit block are fixedly connected to the upper and lower sides of the liquid level float, respectively. The liquid level switch is electrically connected to an alarm, which is triggered when the liquid level float contacts the lower limit block.

4. The external lubrication structure for a vertical reducer according to claim 3, characterized in that: The level switch is threaded into the mounting hole on the top of the external oil tank. The rod of the level switch extends into the external oil tank, and the level float is slidably connected to the rod. The lower limit block is higher than the oil inlet, and the upper limit block is located above the lower limit block.

5. The external lubrication structure for a vertical reducer according to claim 4, characterized in that: The liquid level switch is electrically connected to the PLC controller, and the PLC controller is connected to an audible and visual alarm. The alarm is triggered when the liquid level float touches the lower limit block.

6. The external lubrication structure for a vertical reducer according to claim 1, characterized in that: The external fuel tank has a filler port, and the filler port has a removable fuel tank cap.

7. The external lubrication structure for a vertical reducer according to claim 6, characterized in that: The filler neck is located on the upper surface of the external fuel tank. The fuel tank cap includes a cylindrical plug and a circular cap with a diameter larger than the outer diameter of the plug. The plug is threaded to the filler neck, and the cap forms an annular pressure relief channel with the plug through a radially extending connecting part.

8. The external lubrication structure for a vertical reducer according to claim 7, characterized in that: The lower edge of the cap has a downward-protruding retaining ring, the lower end of which is lower than the upper end of the plug, and the retaining ring extends downward and surrounds the pressure relief channel.

9. The external lubrication structure for a vertical reducer according to claim 1, characterized in that: An oil drain port is located near the bottom of the external oil tank, and a removable end cap is provided at the oil drain port.

10. The external lubrication structure for a vertical reducer according to claim 1, characterized in that: The external fuel tank has an opening at the top, and a cover plate that can be detachably connected to the top of the external fuel tank covers the opening.

11. The external lubrication structure for a vertical reducer according to claim 1, characterized in that: The oil pump is a rotor type, located on the oil delivery pipe and near the oil delivery port.

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