Gearbox with oil temperature, oil level and vibration monitoring functions

Abstract

This invention relates to a speed reducer with oil temperature, oil level, and vibration monitoring functions. It includes a lower housing of a planetary gear reducer. The upper outer wall of the lower housing has several mounting lugs, and the lower outer wall has monitoring lugs. Each monitoring lug has a flow hole communicating with the inner cavity of the lower housing. A monitoring tube communicating with the flow hole is inserted and fixed to the upper end face of the monitoring lug. A three-parameter combined sensor is screwed to the top of the monitoring tube. The probe of the three-parameter combined sensor is inserted into the monitoring tube to detect the liquid level, temperature, and vibration within the tube. Based on the principle of communicating vessels, this speed reducer adds a three-parameter combined sensor to the outside of the housing to monitor the oil temperature, oil level, and vibration during operation. Without affecting the normal operation of the speed reducer, it can provide timely warnings and prevent damage.

Description

Technical fields:

[0001] This invention relates to the technical field of speed reducers, and more specifically to speed reducers with oil temperature, oil level and vibration monitoring functions. Background technology:

[0002] The Chinese gear reducer market has broad development prospects. On the one hand, with the transformation and upgrading of the manufacturing industry and the advancement of intelligent manufacturing, the market demand for gear reducers, as key power transmission devices, will continue to grow. On the other hand, with the continuous emergence of new materials and processes, the performance of gear reducer products will be further improved, providing new impetus for industry development. Simultaneously, continued support from national policies and the continuous expansion of the market will create a more favorable environment for the development of the gear reducer industry. However, general-purpose planetary gear reducers only possess basic product functions. Based on this, end-users have raised higher requirements for gear reducer function upgrades, especially in cooling tower applications. Due to the generally high height of cooling towers, the installation location of related gear reducers is not conducive to frequent inspection and maintenance, leading to poor maintenance and exacerbating wear, even causing gear failure and motor burnout. Monitoring the internal cooling lubricating oil of the gear reducer and performing timely maintenance can effectively reduce gear reducer damage. Therefore, it is necessary to develop a gear reducer that can monitor the internal cooling lubricating oil and facilitate its replacement.

[0003] General-purpose planetary gear reducers only have basic product functions. Based on market assessment, our company has developed a multi-functional integrated reducer that can monitor oil temperature without stopping the machine to prevent overheating; remotely monitor the reducer oil level and issue warnings when there is insufficient or no oil to prevent abnormal gear wear caused by insufficient oil operation; and perform interlock control to achieve shutdown when there is insufficient oil; and monitor the reducer system vibration in real time without stopping the machine, and issue warnings and shutdown for abnormal vibration. Summary of the Invention:

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a speed reducer with oil temperature, oil level, and vibration monitoring functions. Based on the principle of communicating vessels, the speed reducer adds a three-parameter combined sensor on the outside of the housing to monitor the oil temperature, oil level, and vibration during the operation of the speed reducer. Without affecting the normal operation of the speed reducer, it can provide timely warnings and avoid damage to the speed reducer.

[0005] It also facilitates the replacement of the lubricating oil inside the reducer.

[0006] A speed reducer with oil temperature, oil level and vibration monitoring functions includes a lower housing of a planetary gear reducer. The upper outer wall of the lower housing is formed with several mounting lugs, and the lower outer wall is formed with monitoring lugs. The monitoring lugs are formed with flow holes that communicate with the inner cavity of the lower housing. A monitoring tube that communicates with the flow holes is inserted and fixed to the upper end face of the monitoring lugs. A three-parameter combination sensor is screwed to the top of the monitoring tube. The probe of the three-parameter combination sensor is inserted into the monitoring tube to detect the liquid level, temperature and vibration inside the monitoring tube.

[0007] An oil drain valve seat is formed on the end face of the monitoring ear, and an oil drain channel communicating with the flow hole is formed inside the oil drain valve seat. An oil drain valve is provided in the oil drain channel of the valve seat. The oil drain valve includes an oil drain core tube inserted in the oil drain channel. A piston ring is formed on the outer wall of one end of the oil drain core tube. The outer wall of the piston ring abuts against the inner wall of the oil drain channel, and the end face abuts against the end face of the monitoring ear around the flow hole. A cylindrical annular sealing sleeve is inserted and fixed at the inlet of the oil drain channel on the oil drain valve seat. A drain valve is screwed to the other end of the oil drain core tube through the sealing sleeve. A spring is inserted on the oil drain core tube. One end of the spring presses against the piston ring of the oil drain core tube, and the other end presses against the sealing sleeve.

[0008] Several oil outlet holes are formed on the oil drain core tube close to the sealing sleeve inside the oil drain valve seat. An oil drain pipe connecting to the oil drain channel is formed on the side wall of the oil drain valve seat between the oil outlet holes and the piston ring. A one-way valve is screwed onto the oil drain pipe. The drain valve consists of a knob and a stud. The stud of the drain valve covers the oil outlet holes on the oil drain core tube.

[0009] Preferably, the upper end face of the monitoring ear is formed with a threaded hole communicating with the flow hole, and the lower end of the monitoring tube is formed with an external threaded connector, which is screwed and fixed in the threaded hole of the monitoring ear.

[0010] A hexagonal limiting ring is formed on the outer wall of the top of the monitoring tube.

[0011] Preferably, the three-parameter combined sensor adopts a liquid level, temperature, and vibration three-in-one probe, and a data transmission line is provided on the top of the three-parameter combined sensor. The three-parameter combined sensor is electrically connected to a display controller through the data transmission line.

[0012] Preferably, the direction of flow of the one-way valve is from one end connected to the drain pipe to the other end of the one-way valve, and the other end of the one-way valve is connected to the drain pipe.

[0013] Preferably, the oil drain channel on the oil drain valve seat and the flow hole on the monitoring ear seat are both round holes, the central axis of the flow hole is connected to the central axis of the oil drain channel, and the diameter of the oil drain channel is smaller than the diameter of the flow hole.

[0014] The piston ring on the drain tube has its end face flush with the end face of the drain tube on the side closest to the monitoring ear. A sealing gasket is held between the piston ring and the end face of the monitoring ear, and the sealing gasket is glued and fixed to the monitoring ear.

[0015] Preferably, an annular groove is formed on the outer wall of the piston ring on the oil drain tube, and a wear-resistant sealing ring is inserted and fixed in the groove, with the wear-resistant sealing ring pressing against the inner wall of the oil drain channel.

[0016] Preferably, the center distance from the piston ring on the drain core tube to the drain pipe is greater than the center distance from the sealing sleeve to the oil outlet.

[0017] Preferably, a strip-shaped limiting groove is formed on one side wall of the oil drain tube, and a limiting block is formed on the inner wall of the sealing sleeve, with the limiting block inserted into the limiting groove of the oil drain tube.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. Based on the principle of communicating vessels, this reducer adds a three-parameter combined sensor on the outside of the housing to monitor the oil temperature, oil level, and vibration during the reducer's operation. Without affecting the normal operation of the reducer, it can monitor the oil temperature without stopping the machine, preventing the operating oil temperature from becoming too high; it can remotely monitor the reducer's oil level, and issue warnings when there is insufficient oil, avoiding abnormal gear wear caused by insufficient oil operation, and can also perform interlock control to achieve shutdown when there is insufficient oil; it can monitor the vibration of the reducer system in real time without stopping the machine, and issue warnings and shutdowns for abnormal vibrations.

[0020] 2. The structure of this reducer with a three-parameter combination sensor also facilitates the replacement of the internal cooling and lubrication systems without disassembly. Attached image description:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a frontal structural diagram of the present invention;

[0023] Figure 3 This is a partial cross-sectional view taken from above during oil drainage according to the present invention;

[0024] Figure 4 This is a partial sectional view of the side of the present invention;

[0025] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0026] In the diagram: 1. Lower housing; 11. Mounting ear plate; 12. Monitoring ear seat; 13. Oil drain valve seat; 14. Oil drain pipe; 2. Monitoring pipe; 21. External threaded connector; 22. Limiting ring; 3. Three-parameter combination sensor; 4. Oil drain valve; 41. Oil drain core tube; 42. Sealing sleeve; 43. Spring; 44. Water drain valve; 45. Sealing gasket; 46. Wear-resistant sealing ring; 5. Check valve; 6. Display controller; 7. Drainage pipe. Detailed implementation method:

[0027] Example: See Figures 1 to 5 As shown, a reducer with oil temperature, oil level and vibration monitoring functions includes a lower housing 1 of a planetary gear reducer. The upper outer wall of the lower housing 1 is formed with several mounting lugs 11, and the lower outer wall is formed with monitoring lugs 12. Mounting holes are opened on the mounting lugs 11. The mounting lugs 11 are evenly distributed in a ring around the central axis of the lower housing 1. A flow hole 121 connected to the inner cavity of the lower housing 1 is formed in the monitoring lug 12. A monitoring tube 2 connected to the flow hole 121 is inserted and fixed to the upper end face of the monitoring lug 12. A three-parameter combination sensor 3 is screwed to the top end of the monitoring tube 2. The probe of the three-parameter combination sensor 3 is inserted into the monitoring tube 2 to detect the liquid level, temperature and vibration in the monitoring tube 2.

[0028] An oil drain valve seat 13 is formed on the end face of the monitoring ear 12. An oil drain channel 131 connected to the flow hole 121 is formed inside the oil drain valve seat 13. An oil drain valve 4 is provided in the oil drain channel 131 of the valve seat 13. The oil drain valve 4 includes an oil drain core tube 41 inserted in the oil drain channel 131. A piston ring is formed on the outer wall of one end of the oil drain core tube 41. The outer wall of the piston ring abuts against the inner wall of the oil drain channel 131, and the end face abuts against the end face of the monitoring ear 12 around the flow hole 121. A cylindrical annular sealing sleeve 42 is inserted and fixed at the inlet of the oil drain channel 131 on the oil drain valve seat 13. The other end of the oil drain core tube 41 passes through the sealing sleeve 42 and is screwed to a drain valve 44. A spring 43 is inserted on the oil drain core tube 41. One end of the spring 43 presses against the piston ring of the oil drain core tube 41, and the other end presses against the sealing sleeve 42.

[0029] The drain valve seat 13 has several oil outlet holes 411 formed on the drain core tube 41 close to the sealing sleeve 42. A drain pipe 14 connected to the drain channel 131 is formed on the side wall of the drain valve seat 13 between the oil outlet holes 411 and the piston ring. A one-way valve 5 is screwed onto the drain pipe 14. The drain valve 44 consists of a knob and a stud. The stud of the drain valve 44 covers the oil outlet holes 411 on the drain core tube 41. Figure 3 The structure is an exception, requiring the drain valve 44 to move to open the oil outlet 411 in order to drain the oil.

[0030] The upper end face of the monitoring ear 12 is formed with a threaded hole 122 that communicates with the flow hole 121, and the lower end of the monitoring tube 2 is formed with an external threaded connector 21, which is screwed and fixed in the threaded hole 122 of the monitoring ear 12; the monitoring tube 2 can be installed and disassembled.

[0031] A hexagonal limiting protrusion 22 is formed on the outer wall of the top end of the monitoring tube 2. The limiting protrusion 22 facilitates the installation and disassembly of the monitoring tube 2, and also facilitates the installation and disassembly of the three-parameter combination sensor 3.

[0032] The three-parameter combined sensor 3 adopts a liquid level, temperature and vibration three-in-one probe. The top of the three-parameter combined sensor 3 is equipped with a data transmission line, and the three-parameter combined sensor 3 is electrically connected to the display controller 6 through the data transmission line.

[0033] The direction of the one-way valve 5 is from one end of the one-way valve 5 connected to the oil drain pipe 14 to the other end of the one-way valve 5, and the other end of the one-way valve 5 is connected to the oil drain pipe.

[0034] The oil drain channel 131 on the oil drain valve seat 13 and the flow hole 121 on the monitoring ear seat 12 are both round holes. The central axis of the flow hole 121 is connected to the central axis of the oil drain channel 131. The diameter of the oil drain channel 131 is smaller than the diameter of the flow hole 121. Only in this way can the piston ring abut against the end face of the oil drain valve seat 13.

[0035] The end face of the piston ring on the oil drain tube 41 near the monitoring ear seat 12 is flush with the end face of the oil drain tube 41. A sealing gasket 45 is sandwiched between the piston ring and the end face of the monitoring ear seat 12. The sealing gasket 45 is pasted and fixed on the monitoring ear seat 12. The sealing gasket 45 can improve the sealing effect.

[0036] The piston ring on the drain tube 41 has an annular groove formed on its outer wall. A wear-resistant sealing ring 46 is inserted and fixed in the groove. The wear-resistant sealing ring 46 presses against the inner wall of the drain channel 131, and the wear-resistant sealing ring 46 improves the sealing effect between the piston ring and the drain channel 131.

[0037] The center distance between the piston ring on the drain core tube 41 and the drain pipe 14 is greater than the center distance between the sealing sleeve 42 and the oil outlet 411. Therefore, when the oil outlet 411 enters the sealing sleeve 42, the drain core tube 41 is continuously pulled outward to allow the lubricating and cooling oil to be forced into the drain pipe 14.

[0038] A strip-shaped limiting groove 412 is formed on one side wall of the oil drain tube 41, and a limiting block 421 is formed on the inner wall of the sealing sleeve 42. The limiting block 421 is inserted into the limiting groove 412 of the oil drain tube 41. The limiting block 421 can restrict the rotation of the oil drain tube 41, which facilitates the rotation of the drain valve 44. At the same time, the limiting block 421, together with the limiting groove 412, can restrict the oil outlet 411 from moving out of the outer end of the sealing sleeve 42.

[0039] A bent drain tube 7 is inserted and fixed at the inlet end of the flow hole 121 inside the lower housing 1, and the lower end of the drain tube 7 is close to the bottom of the inner cavity of the lower housing 1.

[0040] Working principle: This structure is a reducer with oil temperature, oil level and vibration monitoring functions. The reducer mainly has a monitoring tube 2 installed on the outside of the lower housing 1, which is connected to the inner cavity of the lower housing 1. The cooling and lubricating oil in the lower housing 1 will flow into the monitoring tube 2 to achieve equal height (the principle of communicating vessels). A three-parameter combined sensor 3 can be installed in the monitoring tube 2 to detect the cooling and lubricating oil in the monitoring tube 2. The monitoring tube 2 can be a ceramic tube with good heat insulation effect, which is equivalent to detecting the oil temperature, oil level and vibration inside the reducer. However, if the three-parameter combined sensor 3 is directly installed inside the reducer, it will interfere with the internal components of the reducer and affect the operation. At the same time, the three-parameter combined sensor 3 is also inconvenient.

[0041] Meanwhile, after the three-parameter combination sensor 3 is removed from the monitoring tube 2, it can be used as an oil inlet pipe without disassembling the machine. Oil can be added to or replaced inside the reducer through the monitoring tube 2.

[0042] When changing the cooling lubricating oil inside the reducer, it is often because the lubricating oil contains a lot of impurities, making it more viscous and less fluid. If the oil groove hole is directly opened at the bottom of the lower housing 1, the cooling lubricating oil is not easy to drain. Therefore, an oil drain valve 4 structure is added. In use, the oil outlet 411 is opened by rotating the drain valve 44. Figure 3 As shown, then hold the drain valve 44 and pull the drain core tube 41 outward. During the outward movement of the drain core tube 41, the oil outlet 411 will enter the sealing sleeve 42 to achieve a seal. After the oil outlet 411 enters the sealing sleeve 42, the drain core tube 41 continues to move outward, which will compress the oil discharge channel 131 between the piston ring and the sealing sleeve 42, so that the gas can be discharged from the one-way valve 5. Then reset the drain core tube 41, and the oil discharge channel 131 between the piston ring and the sealing sleeve 42 will form a negative pressure. When the oil outlet 411 moves out of the sealing sleeve 42, the cooling lubricating oil can be drawn into the oil discharge channel 131.

[0043] Furthermore, by repeatedly pulling the drain tube 41, the cooling and lubricating oil inside the reducer is drawn out. After the cooling and lubricating oil is drained, it is refilled through the monitoring tube 2.

[0044] When it is necessary to disassemble the reducer and quickly drain the oil inside, simply unscrew the drain valve 44, and the cooling lubricating oil can be discharged directly along the drain core tube 41.

[0045] The embodiments described are illustrative of the invention and are not intended to limit the invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the invention; therefore, the scope of protection of the invention should be as set forth in the claims.

Claims

1. A speed reducer with oil temperature, oil level and vibration monitoring functions, comprising a lower housing (1) of a planetary gear reducer, wherein a plurality of mounting lugs (11) are formed on the upper outer wall of the lower housing (1) and monitoring lugs (12) are formed on the lower outer wall, characterized in that: The monitoring ear (12) has a flow hole (121) that communicates with the inner cavity of the lower housing (1). The upper end face of the monitoring ear (12) is fixed with a monitoring tube (2) that communicates with the flow hole (121). The top end of the monitoring tube (2) is screwed with a three-parameter combination sensor (3). The probe of the three-parameter combination sensor (3) is inserted into the monitoring tube (2) to detect the liquid level, temperature and vibration in the monitoring tube (2). An oil drain valve seat (13) is formed on the end face of the monitoring ear (12). An oil drain channel (131) communicating with the flow hole (121) is formed inside the oil drain valve seat (13). An oil drain valve (4) is provided in the oil drain channel (131) of the valve seat (13). The oil drain valve (4) includes an oil drain core tube (41) inserted in the oil drain channel (131). A piston ring is formed on the outer wall of one end of the oil drain core tube (41). The outer wall of the piston ring abuts against the inner wall of the oil drain channel (131). The upper end face abuts against the end face of the monitoring ear seat (12) around the flow hole (121); a cylindrical annular sealing sleeve (42) is inserted and fixed at the inlet of the oil drain channel (131) on the oil drain valve seat (13); the other end of the oil drain core tube (41) passes through the sealing sleeve (42) and is screwed with a drain valve (44); a spring (43) is inserted on the oil drain core tube (41), one end of the spring (43) presses against the piston ring of the oil drain core tube (41) and the other end presses against the sealing sleeve (42); The drain valve seat (13) has several oil outlet holes (411) formed on the drain core tube (41) close to the sealing sleeve (42). The drain valve seat (13) between the oil outlet hole (411) and the piston ring has an oil outlet pipe (14) connected to the oil outlet channel (131) formed on the side wall of the drain valve seat (13). A one-way valve (5) is screwed onto the oil outlet pipe (14). The drain valve (44) consists of a knob and a stud. The stud of the drain valve (44) covers the oil outlet hole (411) on the drain core tube (41).

2. The speed reducer with oil temperature, oil level, and vibration monitoring functions according to claim 1, characterized in that: The upper end face of the monitoring ear (12) is formed with a threaded hole (122) that communicates with the flow hole (121), and the lower end of the monitoring tube (2) is formed with an external threaded connector (21), which is screwed and fixed in the threaded hole (122) of the monitoring ear (12). The monitoring tube (2) has a hexagonal limiting protrusion (22) formed on the outer wall of the top end.

3. The speed reducer with oil temperature, oil level, and vibration monitoring functions according to claim 1, characterized in that: The three-parameter combined sensor (3) adopts a liquid level, temperature and vibration three-in-one probe. The top of the three-parameter combined sensor (3) is provided with a data transmission line. The three-parameter combined sensor (3) is electrically connected to a display controller (6) through the data transmission line.

4. The speed reducer with oil temperature, oil level, and vibration monitoring functions according to claim 1, characterized in that: The direction of the one-way valve (5) is from one end connected to the drain pipe (14) to the other end of the one-way valve (5), and the other end of the one-way valve (5) is connected to the drain pipe.

5. The reducer with oil temperature, oil level, and vibration monitoring functions according to claim 4, characterized in that: The oil drain channel (131) on the drain valve seat (13) and the flow hole (121) on the monitoring ear seat (12) are both round holes. The central axis of the flow hole (121) is connected to the central axis of the oil drain channel (131). The diameter of the drain channel (131) is smaller than the diameter of the flow hole (121). The end face of the piston ring on the oil drain tube (41) near the monitoring ear seat (12) is flush with the end face of the oil drain tube (41). A sealing gasket (45) is held between the piston ring and the end face of the monitoring ear seat (12), and the sealing gasket (45) is pasted and fixed on the monitoring ear seat (12).

6. The speed reducer with oil temperature, oil level, and vibration monitoring functions according to claim 5, characterized in that: The piston ring on the drain core tube (41) has an annular groove formed on its outer wall. A wear-resistant sealing ring (46) is inserted and fixed in the groove and presses against the inner wall of the drain channel (131).

7. The speed reducer with oil temperature, oil level, and vibration monitoring functions according to claim 1, characterized in that: The center distance from the piston ring on the drain core tube (41) to the drain pipe (14) is greater than the center distance from the sealing sleeve (42) to the oil outlet (411).

8. The speed reducer with oil temperature, oil level, and vibration monitoring functions according to claim 1, characterized in that: A strip-shaped limiting groove (412) is formed on one side wall of the oil drain tube (41), and a limiting block (421) is formed on the inner wall of the sealing sleeve (42). The limiting block (421) is inserted into the limiting groove (412) of the oil drain tube (41).

Images