Speed reducer with oil temperature, oil level and vibration monitoring function

Abstract

The speed reducer with the oil temperature, oil level and vibration monitoring function comprises a lower machine shell of a planetary gear speed reducer, a plurality of installation lug plates are formed on the outer wall of the upper portion of the lower machine shell, a monitoring lug base is formed on the outer wall of the lower portion of the lower machine shell, and a circulation hole communicated with an inner cavity of the lower machine shell is formed in the monitoring lug base. A monitoring pipe communicated with the circulation hole is fixedly inserted into the upper end face of the monitoring lug seat, a three-parameter combination sensor is connected to the top end of the monitoring pipe in a threaded mode, and a probe of the three-parameter combination sensor is inserted into the monitoring pipe to detect the liquid level, the temperature and the vibration in the monitoring pipe. According to the speed reducer, based on the principle of communicating vessels, the three-parameter combination sensor is additionally arranged on the outer side of the machine shell to monitor the oil temperature, the oil level and vibration in the operation process of the speed reducer, early warning can be conducted in time under the condition that normal operation of the speed reducer is not affected, and damage to the speed reducer is avoided.

Description

Technical field:

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

[0002] The development prospects of China's reducer market are broad. On the one hand, with the transformation and upgrading of the manufacturing industry and the advancement of intelligent manufacturing, the market demand for reducers as key power transmission devices will continue to grow; on the other hand, with the continuous emergence of new materials and new processes, the performance of reducer products will be further improved, providing new impetus for the development of the industry. At the same time, the continuous support of national policies and the continuous expansion of the market will also create a more favorable environment for the development of the reducer industry. The general planetary gear reducer only has basic product functions. On this basis, end customers have also put forward higher requirements for the functional upgrade of reducers, especially in the cooling tower use scenario. Since the cooling tower is generally high, the installation position of the relevant reducer is not conducive to regular inspection and maintenance. There are poor maintenance conditions, which aggravates the wear of the reducer, and even the scrapping of the reducer gear, the burning of the motor and other serious faults. Monitoring the cooling lubricating oil inside the reducer and performing maintenance in time can effectively reduce the damage of the reducer, so it is necessary to develop a reducer that can monitor the cooling lubricating oil inside the reducer and facilitate the replacement of the cooling lubricating oil.

[0003] Universal planetary gear reducers only have basic product functions. Based on market evaluation, our company has developed a multifunctional integrated reducer that can monitor oil temperature without stopping the machine to prevent the oil temperature from being too high during operation. It can also remotely monitor the reducer oil level and issue warnings when there is a lack of oil or insufficient oil to avoid abnormal gear wear caused by lack of oil during operation of the reducer. It can also perform interlocking control to achieve shutdown due to lack of oil. It can also monitor the vibration of the reducer system in real time without stopping the machine, and issue warnings and shut down for abnormal vibrations. Summary of the invention:

[0004] The purpose of the present invention is to address the deficiencies of the prior art and to provide a reducer with oil temperature, oil level and vibration monitoring functions. Based on the principle of a communicating vessel, a three-parameter combination sensor is added to the outside of the casing to monitor the oil temperature, oil level and vibration of the reducer during operation. Without affecting the normal operation of the reducer, timely warnings can be given to avoid damage to the reducer.

[0005] It is also convenient to replace the lubricating oil inside the reducer.

[0006] A reducer with oil temperature, oil level and vibration monitoring functions comprises a lower housing of a planetary gear reducer, wherein a plurality of mounting ear plates are formed on the outer wall of the upper portion of the lower housing, a monitoring ear seat is formed on the outer wall of the lower portion, a flow hole connected to the inner cavity of the lower housing is formed in the monitoring ear seat, a monitoring tube connected to the flow hole is plugged and fixed on the upper end surface of the monitoring ear seat, a three-parameter combination sensor is screwed on the top end of the monitoring tube, and a probe of the three-parameter combination sensor is inserted in the monitoring tube to detect the liquid level, temperature and vibration in the monitoring tube;

[0007] An oil drain valve seat is formed on the end surface of the end of the monitoring ear seat, an oil drain channel connected to the flow hole is formed in the oil drain valve seat, an oil drain valve is arranged in the oil drain channel of the valve seat, and the oil drain valve comprises 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 seat around the flow hole; a cylindrical ring-shaped sealing sleeve is plugged and fixed to the inlet of the oil drain channel on the oil drain valve seat, and the other end of the oil drain core tube passes through the sealing sleeve and is threaded with a drain valve; a spring is inserted and sleeved 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] A plurality of oil outlet holes are formed on the oil drain core tube close to the sealing sleeve in the oil drain valve seat, an oil drain pipe connected 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 threaded on the oil drain pipe, and the drain valve consists of a knob and a stud, and the stud of the drain valve covers the oil outlet holes on the oil drain core tube.

[0009] Preferably, the upper end surface of the monitoring ear seat is formed with a threaded hole connected to the flow hole, and the lower end of the monitoring tube is formed with an external threaded joint, which is threadedly fixed in the threaded hole of the monitoring ear seat;

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

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

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

[0013] Preferably, the oil discharge passage on the oil discharge valve seat and the flow hole on the monitoring ear seat are both circular holes, the central axis of the flow hole is connected to the central axis of the oil discharge passage, and the aperture of the oil discharge passage is smaller than the aperture of the flow hole;

[0014] The end face of the piston ring on the oil drain core tube close to the monitoring ear seat is flush with the end face of the oil drain core tube, and a sealing gasket is clamped between the piston ring and the end face of the monitoring ear seat, and the sealing gasket is glued and fixed on the monitoring ear seat.

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

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

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

[0018] The beneficial effects of the present invention are:

[0019] 1. Based on the principle of communicating vessels, this reducer is equipped with a three-parameter combination sensor on the outside of the casing to monitor the oil temperature, oil level and vibration during the operation of the reducer. Without affecting the normal operation of the reducer, the oil temperature can be monitored without stopping to prevent the operating oil temperature from being too high. The reducer oil level can be remotely monitored to issue an early warning when there is a lack of oil or insufficient oil, avoiding abnormal gear wear caused by the lack of oil in the reducer. Interlocking control can be performed to achieve shutdown due to lack of oil. The vibration of the reducer system can be monitored in real time without stopping, and abnormal vibration can be warned and shut down.

[0020] 2. The structure of installing three-parameter combination sensor on this reducer also makes it convenient to replace the cooling and lubrication inside the reducer without disassembling it. Description of the drawings:

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

[0022] Figure 2 It is a structural schematic diagram of the present invention;

[0023] Figure 3 It is a partial cross-sectional schematic diagram of the present invention when draining oil from a top view;

[0024] Figure 4 It is a partial cross-sectional schematic diagram of the side view of the present invention;

[0025] Figure 5 for Figure 4 A local enlarged schematic diagram of point A in the middle.

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

[0027] Example: See Figures 1 to 5 As shown, a reducer with oil temperature, oil level and vibration monitoring functions comprises a lower housing 1 of a planetary gear reducer, a plurality of mounting ear plates 11 are formed on the upper outer wall of the lower housing 1, a monitoring ear seat 12 is formed on the lower outer wall, mounting holes are opened on the mounting ear plates 11, the mounting ear plates 11 are evenly distributed in a ring shape 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 ear seat 12, a monitoring tube 2 connected to the flow hole 121 is plugged and fixed on the upper end surface of the monitoring ear seat 12, a three-parameter combination sensor 3 is screwed on the top end of the monitoring tube 2, and a probe of the three-parameter combination sensor 3 is inserted in 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 surface of the end of the monitoring ear seat 12, and an oil drain passage 131 connected to the flow hole 121 is formed in the oil drain valve seat 13. An oil drain valve 4 is arranged in the oil drain passage 131 of the valve seat 13, and the oil drain valve 4 includes an oil drain core tube 41 inserted in the oil drain passage 131, and a piston ring is formed on the outer wall of one end of the oil drain core tube 41, and the outer wall of the piston ring abuts against the inner wall of the oil drain passage 131, and the end face abuts against the end face of the monitoring ear seat 12 around the flow hole 121; a cylindrical ring-shaped sealing sleeve 42 is inserted and fixed to the inlet of the oil drain passage 131 on the oil drain valve seat 13, and 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 and sleeved on the oil drain core tube 41, and 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] A plurality of oil outlet holes 411 are formed on the oil drain core tube 41 in the oil drain valve seat 13 and close to the sealing sleeve 42. An oil drain pipe 14 connected to the oil drain passage 131 is formed on the side wall of the oil drain valve seat 13 between the oil outlet holes 411 and the piston ring. A one-way valve 5 is screwed on the oil drain pipe 14. The drain valve 44 is composed of a knob and a stud. The stud of the drain valve 44 covers the oil outlet holes 411 on the oil drain core tube 41 ( Figure 3 The structure in is an exception, which requires the drain valve 44 to move to open the oil outlet hole 411 before the oil can be discharged).

[0030] The upper end surface of the monitoring ear seat 12 is formed with a threaded hole 122 connected to the flow hole 121, and the lower end of the monitoring tube 2 is formed with an external threaded joint 21, which is threadedly fixed in the threaded hole 122 of the monitoring ear seat 12; the monitoring tube 2 can be installed and disassembled;

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

[0032] The three-parameter combination sensor 3 adopts a three-in-one probe of liquid level, temperature and vibration. A data transmission line is provided on the top of the three-parameter combination sensor 3, and the three-parameter combination 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 discharge 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 discharge pipe.

[0034] The oil discharge passage 131 on the oil discharge valve seat 13 and the flow hole 121 on the monitoring ear seat 12 are both circular holes, the central axis of the flow hole 121 is connected to the central axis of the oil discharge passage 131, and the aperture of the oil discharge passage 131 is smaller than the aperture of the flow hole 121; thus, the piston ring can be abutted against the end surface of the oil discharge valve seat 13;

[0035] The end face of the piston ring on the oil drain core tube 41 close to the monitoring ear seat 12 is flush with the end face of the oil drain core tube 41, and a sealing gasket 45 is clamped between the piston ring and the end face of the monitoring ear seat 12. The sealing gasket 45 is glued and fixed on the monitoring ear seat 12, and the sealing gasket 45 can improve the sealing effect.

[0036] An annular groove is formed on the outer wall of the piston ring on the oil discharge core tube 41, and 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 oil discharge channel 131, and the wear-resistant sealing ring 46 improves the sealing effect between the piston ring and the oil discharge channel 131.

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

[0038] A strip-shaped limiting groove 412 is formed on the side wall of one side of the oil drain core 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 core tube 41. The limiting block 421 can limit the rotation of the oil drain core tube 41, which is convenient for the rotation of the drain valve 44. At the same time, the limiting block 421 cooperates with the limiting groove 412 to limit the oil outlet hole 411 from moving out of the outer end of the sealing sleeve 42.

[0039] A curved drainage tube 7 is inserted and fixed to the inlet end of the flow hole 121 in the lower housing 1 , and the lower end of the drainage 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. This reducer is mainly equipped with a monitoring tube 2 connected to the inner cavity of the lower casing 1 on the outer side of the lower casing 1. The cooling lubricating oil in the lower casing 1 will flow into the monitoring tube 2 to achieve equal height (principle of communicating vessels). A three-parameter combination sensor 3 can be installed in the monitoring tube 2 to detect the cooling lubricating oil in the monitoring tube 2. The monitoring tube 2 can be made of a ceramic tube with good heat insulation effect, which is equivalent to detecting the oil temperature, oil level and vibration inside the reducer. If the three-parameter combination sensor 3 is directly installed inside the reducer, it will interfere with the components inside the reducer and affect its operation. At the same time, the three-parameter combination sensor 3 is also inconvenient.

[0041] At the same time, after the three-parameter combination sensor 3 is removed from the monitoring tube 2, the oil can be used as an oil inlet pipe without disassembling the machine, and the oil can be added or replaced inside the reducer through the monitoring tube 2;

[0042] When replacing the cooling lubricating oil inside the reducer, it is often because there are more impurities in the cooling lubricating oil, the cooling lubricating oil becomes more viscous and has poor fluidity. If the oil tank hole is directly opened at the bottom of the lower housing 1, the cooling lubricating oil is not easy to discharge, and then the drain valve 4 structure is added. When in use, the drain valve 44 is rotated to open the oil outlet hole 411, such as Figure 3 As shown, the drain valve 44 is then held to pull the drain core tube 41 outwards. During the outward movement of the drain core tube 41, the oil outlet hole 411 enters the sealing sleeve 42 to achieve sealing. After the oil outlet hole 411 enters the sealing sleeve 42, the drain core tube 41 continues to move outwards, which will compress the oil discharge passage 131 between the piston ring and the sealing sleeve 42, so that the gas is discharged from the one-way valve 5. Then, the drain core tube 41 is reset, and a negative pressure is formed in the oil discharge passage 131 between the piston ring and the sealing sleeve 42. When the oil outlet hole 411 moves out of the sealing sleeve 42, the cooling lubricating oil can be sucked into the oil discharge passage 131.

[0043] Then, when the oil discharge core tube 41 is pulled back and forth, the cooling lubricating oil inside the reducer is sucked out, and after the cooling lubricating oil is discharged, oil is added through the monitoring tube 2;

[0044] When the reducer needs to be disassembled and the oil inside the reducer needs to be quickly drained, the cooling lubricating oil can be directly discharged along the oil drain core tube 41 by simply unscrewing the drain valve 44 .

[0045] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore, the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A reducer with oil temperature, oil level and vibration monitoring functions, comprising a lower housing (1) of a planetary gear reducer, wherein the upper outer wall of the lower housing (1) is formed with a plurality of mounting ear plates (11), and the lower outer wall is formed with a monitoring ear seat (12), characterized in that: A flow hole (121) communicating with the inner cavity of the lower housing (1) is formed in the monitoring ear seat (12); a monitoring tube (2) communicating with the flow hole (121) is plugged and fixed to the upper end surface of the monitoring ear seat (12); a three-parameter combination sensor (3) is screwed to the top end of the monitoring tube (2); a probe of the three-parameter combination sensor (3) is inserted in 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 surface of the end of the monitoring ear seat (12), and an oil drain passage (131) connected to the flow hole (121) is formed in the oil drain valve seat (13). An oil drain valve (4) is arranged in the oil drain passage (131) of the valve seat (13), and the oil drain valve (4) includes an oil drain core tube (41) inserted in the oil drain passage (131), and a piston ring is formed on the outer wall of one end of the oil drain core tube (41), and the outer wall of the piston ring abuts against the inner wall of the oil drain passage (131). The upper and lower ends of the oil drain valve seat (13) are against the end faces of the monitoring ear seat (12) around the flow hole (121); a cylindrical ring-shaped sealing sleeve (42) is inserted and fixed to the inlet of the oil drain passage (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 and sleeved on the oil drain core tube (41), one end of the spring (43) is pressed against the piston ring of the oil drain core tube (41), and the other end is pressed against the sealing sleeve (42); A plurality of oil outlet holes (411) are formed on the oil drain core tube (41) in the oil drain valve seat (13) and close to the sealing sleeve (42); an oil drain pipe (14) connected to the oil drain passage (131) is formed on the side wall of the oil drain valve seat (13) between the oil outlet holes (411) and the piston ring; a one-way valve (5) is screwed on the oil drain pipe (14); the drain valve (44) is composed of a knob and a stud; the stud of the drain valve (44) covers the oil outlet holes (411) on the oil drain core tube (41).

2. The reducer with oil temperature, oil level and vibration monitoring functions according to claim 1 is characterized in that: The upper end surface of the monitoring ear seat (12) is formed with a threaded hole (122) connected to the flow hole (121), and the lower end of the monitoring tube (2) is formed with an external threaded joint (21), and the external threaded joint (21) is threadedly fixed in the threaded hole (122) of the monitoring ear seat (12); A regular hexagonal limiting convex ring (22) is formed on the outer wall of the top end of the monitoring tube (2).

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

4. The 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 of the one-way valve (5) connected to the oil discharge 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 discharge pipe.

5. The reducer with oil temperature, oil level and vibration monitoring functions according to claim 4 is characterized in that: The oil discharge passage (131) on the oil discharge valve seat (13) and the flow hole (121) on the monitoring ear seat (12) are both circular holes, the central axis of the flow hole (121) is connected to the central axis of the oil discharge passage (131), and the aperture of the oil discharge passage (131) is smaller than the aperture of the flow hole (121); The end face of the piston ring on the oil drain core tube (41) close to the monitoring ear seat (12) is flush with the end face of the oil drain core tube (41), and a sealing gasket (45) is sandwiched between the piston ring and the end face of the monitoring ear seat (12), and the sealing gasket (45) is glued and fixed on the monitoring ear seat (12).

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

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

8. The 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 the side wall of one side of the oil drain core tube (41), and a limiting block (421) is formed on the inner wall of the sealing sleeve (42), and the limiting block (421) is inserted into the limiting groove (412) of the oil drain core tube (41).

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