A method for cleaning the oil pipe of an oil level and oil temperature display device for a speed reducer

Abstract

The present invention discloses a method for cleaning the oil pipe of an oil level and oil temperature display device for a speed reducer, which relates to the technical field of oil level and oil temperature monitoring of a speed reducer. The device and method include a speed reducer housing, which includes an upper speed reducer housing and a lower speed reducer housing. An exhaust cover and a filling cap are provided at the top of the upper speed reducer housing. An exhaust pipe is provided on the exhaust cover, including an oil level gauge. The top end of the filling cap is communicated with the top end of the oil level gauge through a horizontal pipe. The bottom end of the oil level gauge is communicated with the bottom of the left side of the lower speed reducer housing. A three-way joint is provided on the horizontal pipe, and an oil filling hole is provided at the top of the three-way joint. By using the principle of communicating vessels and the original filling cap of an old-fashioned speed reducer, the upper end of the oil level gauge is communicated with the filling cap and the lower end is communicated with the bottom of the speed reducer. In this way, the oil level can be directly observed through the oil level gauge, and by setting a three-way joint on the oil level gauge pipeline, the original oil filling function can still be maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring the oil level and oil temperature of a speed reducer, and specifically to a device for displaying the oil level and oil temperature of a speed reducer. Background Art

[0002] A speed reducer is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. It plays a role in matching the rotational speed and transmitting torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery.

[0003] Traditional old-fashioned speed reducers (such as Figure 1 ) often use an oil dipstick to monitor the oil level. This method requires inserting the oil dipstick into the speed reducer to measure the oil level, which is likely to cause contamination of the lubricating oil. If the insertion angle and position are incorrect during the operation of the speed reducer, the gears of the speed reducer are likely to damage the oil dipstick. In addition, traditional old-fashioned speed reducers lack direct monitoring of temperature and mainly rely on manual measurement with a temperature measuring instrument on-site, which is not conducive to the temperature monitoring of the speed reducer. In many large-scale production enterprises with a long history in China, although new speed reducers are equipped with functions for monitoring oil level and oil temperature and are paired with DSC remote monitoring, for the old-fashioned speed reducers still in production, such monitoring is lacking, and there are also no effective improvement and transformation solutions. In addition, dirt is likely to accumulate on the inner wall of the oil level gauge after long-term operation and is not easy to clean. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a device for displaying the oil level and oil temperature of a speed reducer, which solves the following technical problems:

[0006] 1. Old-fashioned speed reducers lack oil level monitoring;

[0007] 2. Old-fashioned speed reducers lack oil temperature monitoring;

[0008] 3. Old-fashioned speed reducers lack oil temperature cooling;

[0009] 4. Old-fashioned speed reducers lack oil quality filtration;

[0010] 5. The inner wall of the liquid level gauge is not easy to clean;

[0011] 6. The hardness of the cleaning rod (the temperature sensor wrapped with a cleaning layer in the present invention) cannot be adjusted;

[0012] 7. Whether the liquid level gauge is blocked cannot be monitored by the method of adding oil.

[0013] (2) Technical Solutions

[0014] To achieve the above object, the present invention is realized through the following technical solutions: A decelerator oil level and oil temperature display device, including a decelerator housing, the decelerator housing includes an upper decelerator housing and a lower decelerator housing, a fuel filler cap is provided at the top of the upper decelerator housing, including an oil level gauge, at least one of the top end of the fuel filler cap, the side wall of the upper decelerator housing, and the side wall of the lower decelerator housing is communicated with the top end of the oil level gauge through a horizontal pipe, the bottom end of the oil level gauge is communicated with the bottom of the left side of the lower decelerator housing, a three-way joint is provided on the horizontal pipe, a fuel filling hole is provided at the top of the three-way joint, a temperature transmitter is provided on the three-way joint, the sensor line of the temperature transmitter passes through the housing of the three-way joint and extends into the lower decelerator housing, a temperature sensor is provided at the end of the sensor line, and the temperature sensor is electrically connected to the temperature transmitter.

[0015] Preferably, the three-way joint is provided in the middle of the horizontal pipe.

[0016] Preferably, the temperature transmitter is provided at the bottom of the three-way joint.

[0017] Preferably, the three-way joint is provided at the left end of the horizontal pipe.

[0018] Preferably, the temperature transmitter is provided on the left side of the three-way joint.

[0019] Preferably, the diameter of the temperature sensor is smaller than the inner diameter of the oil level gauge.

[0020] Preferably, a oil pump is connected to the oil level gauge, the inlet of the oil pump is communicated with the decelerator housing, and a cooler is provided on the oil level gauge.

[0021] Preferably, a filter is provided on the oil level gauge.

[0022] Preferably, including an oil pump controller, a decelerator motor, a decelerator motor control switch, the oil pump is driven by an oil pump motor, the oil pump controller is electrically connected to the oil pump motor, the decelerator motor is electrically connected to the decelerator motor control switch, the decelerator motor control switch is electrically connected to the oil pump controller, and the oil pump controller starts the oil pump motor after the decelerator motor control switch is closed.

[0023] Preferably, the outside of the temperature sensor is wrapped with a cleaning layer.

[0024] Preferably, a phase change layer is provided between the cleaning layer and the temperature sensor, the phase change layer will absorb heat and become soft after contacting the lubricating oil in the decelerator housing, and an elastic material is wrapped outside the phase change layer.

[0025] Preferably, a heating layer is provided at a position between the temperature sensor and the phase change layer, and between the phase change layer and the cleaning layer.

[0026] A cleaning method for the oil pipe of an oil level and oil temperature display device of a speed reducer, comprising the following steps:

[0027] Step 1: Observe whether there is dirt on the inner wall of the oil level gauge;

[0028] Step 2: If there is dirt, separate the temperature transmitter from the tee;

[0029] Step 3: Drag the temperature transmitter to pull the temperature sensor out of the lower housing of the speed reducer through the sensor line to the position where there is dirt on the inner wall of the oil level gauge. At this time, the temperature sensor is pulled out of the speed reducer into the oil level gauge. Since the temperature in the oil level gauge is lower than the oil temperature of the speed reducer, the phase change layer gradually hardens and is difficult to be extruded and deformed, making the connection between the temperature sensor and the cleaning layer firm, facilitating the cleaning layer wrapped around the outside of the temperature sensor to wipe off the dirt. After the dirt is wiped off, due to the hardening of the phase change layer, the deformation ability of the phase change layer becomes weak, resulting in difficulty in putting the temperature sensor back into the lower housing of the speed reducer. At this time, turn on the power supply of the heating layer to heat the heating layer to make the phase change layer soften again, and then it is easy to extrude and deform the phase change layer to install the temperature sensor back into the lower housing of the speed reducer;

[0030] Step 4: After reinstalling the temperature transmitter and the tee, return to Step 1.

[0031] (III) Beneficial effects

[0032] The present invention provides an oil level and oil temperature display device for a speed reducer and a pipeline cleaning method. It has the following

[0033] beneficial effects:

[0034] (1) The oil level and oil temperature display device of the speed reducer utilizes the principle of communicating vessels and the original oil filling cap of the old-fashioned speed reducer. By connecting the upper end of the oil level gauge to the speed reducer and the lower end to the bottom of the speed reducer, the oil level can be directly observed through the oil level gauge. And by setting a tee on the oil level gauge pipeline, the original oil filling function can still be maintained.

[0035] (2) The oil level and oil temperature display device of the speed reducer combines the temperature transmitter with the tee. By placing the temperature sensor at the bottom of the speed reducer through the oil level gauge pipeline, the oil temperature of the speed reducer can be effectively monitored. And the outer diameter of the temperature sensor is smaller than the inner diameter of the oil level gauge pipeline, which can not only facilitate the installation of the temperature sensor but also, in the case of blockage of the oil level gauge, pull the connection line of the temperature sensor to dredge the oil level gauge.

[0036] (3) The cleaning method for the oil pipe of the oil level and oil temperature display device of the speed reducer, by including a cleaning layer outside the temperature sensor, can move the position of the temperature sensor in the oil level gauge in cooperation with the temperature transmitter and the sensor line, thereby realizing the cleaning of the inner wall of the oil level gauge.

[0037] (4) The method for cleaning the oil pipe of the oil level and oil temperature display device of the speed reducer can use the liquid level gauge to connect the cooling structure and the filtering structure, so as to cool and filter the oil temperature during the operation of the speed reducer and ensure the oil quality during operation.

[0038] (5) The method for cleaning the oil pipe of the oil level and oil temperature display device of the speed reducer utilizes the phase change layer and the change of oil temperature to adjust the hardness of the outer wall structure (cleaning layer) of the temperature sensor. Description of the Drawings

[0039] Figure 1 It is a schematic structural diagram of a traditional old-fashioned speed reducer;

[0040] Figure 2 It is a schematic structural diagram of the present invention;

[0041] Figure 3 It is a schematic structural diagram of the present invention (the tee is arranged at the left end of the horizontal pipe);

[0042] Figure 4 It is a schematic structural diagram of the tee in Embodiment 1;

[0043] Figure 5 It is a schematic structural diagram of the tee in Embodiment 2;

[0044] Figure 6 It is a schematic structural diagram of the upper end of the liquid level gauge connected to the upper housing of the speed reducer;

[0045] Figure 7 It is a schematic structural diagram of the upper end of the liquid level gauge connected to the lower housing of the speed reducer;

[0046] Figure 8 It is a schematic structural diagram of the present invention with a cooling and filtering structure;

[0047] Figure 9 It is an electrical schematic diagram of the cooling oil pump linked with the speed reducer switch;

[0048] Figure 10 It is a sectional view of the temperature sensor with a phase change layer;

[0049] Figure 11 It is a structural diagram of the temperature sensor with a phase change layer (the phase change layer is in a solid state);

[0050] Figure 12 It is a structural change diagram of the temperature sensor with a phase change layer (the phase change layer slowly changes from a pure solid state to a liquid state);

[0051] Figure 13 It is a schematic diagram of the state when the temperature sensor enters the bottom end of the oil level gauge.

[0052] In the figure: 1. Upper housing of the speed reducer; 2. Lower housing of the speed reducer; 3. End cover of the input shaft; 31. Input shaft; 4. End cover of the intermediate shaft; 5. End cover of the output shaft; 51. Output shaft; 6. Oil filling cap; 7. Exhaust cap; 8. Lifting lug; 9. Oil level gauge; 10. Horizontal pipe; 11. Tee; 111. Sealing member; 112. Oil cap; 12. Temperature transmitter; 121. Temperature sensor; 122. Sensor line; 13. Oil pump; 131. Oil pump motor; 14. Filter; 15. Cooler; 16. Phase change layer; 17. Heating layer. Specific embodiments

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] Embodiment 1: Please refer to Figure 2 , Figure 4

[0055] An oil level and oil temperature display device for a speed reducer, including a speed reducer housing, the speed reducer housing includes an upper housing 1 of the speed reducer and a lower housing 2 of the speed reducer, and the upper housing 1 and the lower housing 2 of the speed reducer are connected by a flange. An input shaft end cover 3, an intermediate shaft end cover 4, and an output shaft end cover 5 are sequentially arranged on the front of the speed reducer housing from right to left. An exhaust cap 7 and an oil filling cap 6 are arranged on the top of the upper housing 1 of the speed reducer. An exhaust pipe is arranged on the exhaust cap 7, including an oil level gauge 9. The top end of the oil filling cap 6 is communicated with the top end of the oil level gauge 9 through a horizontal pipe 10 (of course, being connected to the upper housing 1 or the lower housing 2 of the speed reducer should also fall within the protection scope of the present invention). The bottom end of the oil level gauge 9 is communicated with the bottom of the left side of the lower housing 2 of the speed reducer. A tee 11 is arranged on the horizontal pipe 10. An oil filling hole is arranged at the top of the tee 11. A temperature transmitter 12 is arranged on the tee 11. The sensor line 122 of the temperature transmitter 12 passes through the housing of the tee 11 and extends into the lower housing 2 of the speed reducer. A temperature sensor 121 is arranged at the end of the sensor line 122. The temperature sensor 121 is electrically connected to the temperature transmitter 12. The tee 11 is arranged in the middle of the horizontal pipe 10, and the temperature transmitter 12 is arranged at the bottom of the tee 11.

[0056] The oil level gauge 9 can adopt a transparent tube oil level gauge or a flap type oil level gauge, and can be installed according to specific circumstances. An oil cap 112 is usually arranged on the oil filling hole of the tee 11 to prevent the lubricating oil from being exposed to the air and deteriorating. A sealing member 111 is arranged between the sensor line 122 and the housing of the tee 11 to further improve the sealing performance of the speed reducer. The sealing member 111 can adopt a sealing sleeve, etc.

[0057] To facilitate the placement of the temperature sensor 121, a certain arc should be provided at the bottom of the liquid level gauge 9 (such as Figure 13 ).

[0058] Example 2: Please refer to Figure 3 , Figure 5

[0059] The difference from Example 1 is that the tee 11 is arranged at the left end of the horizontal pipe 10, and the temperature transmitter 12 is arranged on the left side of the tee 11.

[0060] The purpose of Example 2 is to align the fuel filling hole of the tee 11 with the upper end of the liquid level gauge 9, so that the inner wall of the liquid level gauge 9 can be flushed during fuel filling. If the bottom of the liquid level gauge 9 is blocked, the added oil will fill the liquid level gauge 9, and the state of the liquid level gauge 9 can be monitored.

[0061] In the above examples, it should be noted that the diameter of the temperature sensor 121 is smaller than the inner diameter of the liquid level gauge 9 to facilitate the installation and removal of the temperature sensor 121.

[0062] Example 3: To cool the lubricating oil of the reducer

[0063] The difference from Example 1 is that the liquid level gauge 9 is connected to an oil pump 13, the inlet of the oil pump 13 is connected to the reducer housing, and a cooler 15 is arranged on the liquid level gauge 9.

[0064] Since the liquid level gauge 9 now functions more like a pipeline of the cooler 15, the oil level cannot be monitored through the liquid level gauge 9 when the reducer oil pump 13 is running. However, the oil level can be observed through the liquid level gauge 9 when the oil pump 13 is stopped.

[0065] The cooler 15 can adopt a tubular heat exchanger or a plate heat exchanger. The other side is connected with a cooling medium, such as cooling water.

[0066] Example 4: To purify the oil quality

[0067] Based on Example 3, a filter 14 is arranged on the liquid level gauge 9.

[0068] Example 5: To achieve linkage with the reducer motor

[0069] It includes an oil pump controller, a reducer motor, a reducer motor control switch. The oil pump 13 is driven by an oil pump motor 131. The oil pump controller is electrically connected to the oil pump motor 131. The reducer motor is electrically connected to the reducer motor control switch. The reducer motor control switch is electrically connected to the oil pump controller. After the reducer motor control switch is closed, the oil pump controller starts the oil pump motor 131. The rotating shaft of the reducer motor is connected to the input shaft 31.

[0070] Example 6: To endow the temperature sensor 121 with the function of cleaning the inner wall of the liquid level gauge 9

[0071] On the basis of Example 1, a cleaning layer is wrapped around the outside of the temperature sensor 121.

[0072] Example 7: To enable the hardness of the cleaning layer to be adjustable

[0073] On the basis of Example 6, a phase change layer 16 is provided between the cleaning layer and the temperature sensor 121. The phase change layer 16 will absorb heat and become soft after contacting the lubricating oil in the reducer housing. An elastic material is wrapped around the outside of the phase change layer 16.

[0074] The elastic material can be selected as a rubber sleeve, etc. The phase change material in the phase change layer 16 can be selected as a solid-liquid phase change material matching the oil temperature (such as a solid-liquid phase change material at 40-60 degrees Celsius), and specifically can be beef tallow, animal oil, organic oil, etc.

[0075] When the phase change material is below the melting point temperature, it is in a solid state and has a certain hardness to support the cleaning layer, facilitating the cleaning of the inner wall of the liquid level gauge 9. When the phase change material is above the melting point temperature, it is in a solid-liquid mixed state or a liquid state, with a lower hardness, which can facilitate the deformation of the cleaning layer, so as to facilitate the shuttle in the liquid level gauge 9. Especially for the arc section provided at the bottom of the liquid level gauge 9, the easy deformation of the cleaning layer can make the outer diameter of the cleaning layer smaller, facilitating the shuttle in the arc section provided at the bottom of the liquid level gauge 9 without getting stuck.

[0076] Example 8: To adjust the hardness of the phase change layer 16

[0077] On the basis of Example 7, a heating layer 17 is provided at a position between the temperature sensor 121 and the phase change layer 16 and between the phase change layer 16 and the cleaning layer.

[0078] The heating layer 17 can select a heating sheet as the heating device, which is attached to the inner wall or the outer wall of the phase change layer 16 and can be heated to the melting temperature of the phase change layer 16 after being powered on.

[0079] The above cleaning layer can be made of fabric or a cleaning brush, but it should be noted that the fabric or the cleaning brush can still move on the inner wall of the oil level gauge 9 after being wrapped around the temperature sensor 121.

[0080] Example 9: A method for cleaning the inner wall of the oil level gauge

[0081] A method for cleaning the oil pipe of a speed reducer oil level and oil temperature display device, using the speed reducer oil level and oil temperature display device in Example 8, includes the following steps:

[0082] Step 1: Observe whether there is dirt on the inner wall of the liquid level gauge 9;

[0083] Step 2: If there is dirt, separate the temperature transmitter 12 from the three-way joint 11;

[0084] Step 3: Pull the temperature transmitter 12 to pull the temperature sensor 121 out of the lower housing 2 of the reducer through the sensor line 122 to the position where there is dirt on the inner wall of the oil level gauge 9. At this time, the temperature sensor 121 is pulled out of the reducer into the oil level gauge 9. Since the temperature in the oil level gauge 9 is lower than the oil temperature of the reducer, the phase change layer 16 gradually hardens and is difficult to be extruded and deformed, making the connection between the temperature sensor 121 and the cleaning layer firm, facilitating the cleaning layer wrapped around the outside of the temperature sensor 121 to wipe off the dirt. After the dirt is wiped off, due to the hardening of the phase change layer 16, the deformation ability of the phase change layer 16 becomes weak, resulting in the temperature sensor 121 being difficult to be put back into the lower housing 2 of the reducer. At this time, turn on the power supply of the heating layer 17 to heat the heating layer 17 to make the phase change layer 16 soften again and then make the phase change layer 16 easy to be extruded and deformed, and then install the temperature sensor 121 back into the lower housing 2 of the reducer (the specific installation operation can use a wire to poke the temperature sensor 121 into the lower housing 2 of the reducer in the liquid level gauge 9);

[0085] Step 4: After reinstalling the temperature transmitter 12 and the three-way joint 11, return to Step 1.

[0086] In summary, the oil level and oil temperature display device for the reducer utilizes the principle of the communicating vessel and the original oil filling cap of the old-fashioned reducer, and connects the upper end of the oil level gauge with the oil filling cap and the lower end with the bottom of the reducer. In this way, the oil level can be directly observed through the oil level gauge, and by setting a three-way joint on the oil level gauge pipeline, the original oil filling function can still be maintained.

[0087] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0088] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for cleaning the oil pipe of an oil level and oil temperature display device of a speed reducer, including a speed reducer housing, the speed reducer housing includes an upper speed reducer housing (1) and a lower speed reducer housing (2), and a fuel filling cap (6) is arranged at the top of the upper speed reducer housing (1), characterized in that: It includes an oil level gauge (9), and at least one of the top end of the fuel filler cap (6), the side wall of the upper housing (1) of the speed reducer, and the side wall of the lower housing (2) of the speed reducer is communicated with the top end of the oil level gauge (9) through a horizontal pipe (10). The bottom end of the oil level gauge (9) is communicated with the bottom of the left side of the lower housing (2) of the speed reducer. A tee (11) is provided on the horizontal pipe (10). A fuel filling hole is provided at the top of the tee (11). A temperature transmitter (12) is provided on the tee (11). The sensor line (122) of the temperature transmitter (12) passes through the housing of the tee (11) and extends into the lower housing (2) of the speed reducer. A temperature sensor (121) is provided at the end of the sensor line (122). The temperature sensor (121) is electrically connected to the temperature transmitter (12); A cleaning layer is wrapped outside the temperature sensor (121); A phase change layer (16) is provided between the cleaning layer and the temperature sensor (121). The phase change layer (16) will absorb heat and become soft after contacting the lubricating oil in the speed reducer housing. An elastic material is wrapped outside the phase change layer (16); The cleaning method includes the following steps: Step 1: Observe whether there is dirt on the inner wall of the oil level gauge (9); Step 2: If there is dirt, separate the temperature transmitter (12) from the tee (11); Step 3: Drag the temperature transmitter (12) to pull the temperature sensor (121) out of the lower housing (2) of the speed reducer through the sensor line (122) to the position where there is dirt on the inner wall of the oil level gauge (9). At this time, the temperature sensor (121) is pulled out of the speed reducer into the oil level gauge (9). Since the temperature in the oil level gauge (9) is lower than the oil temperature of the speed reducer, the phase change layer (16) gradually hardens and is difficult to be extruded and deformed, making the connection between the temperature sensor (121) and the cleaning layer firm, facilitating the cleaning layer wrapped outside the temperature sensor (121) to wipe off the dirt. After the dirt is wiped off, due to the hardening of the phase change layer (16), the deformation ability of the phase change layer (16) becomes weak, resulting in the temperature sensor (121) being difficult to be put back into the lower housing (2) of the speed reducer. At this time, turn on the power supply of the heating layer (17) to heat the heating layer (17) to make the phase change layer (16) soften again and then make the phase change layer (16) easily extruded and deformed, and then install the temperature sensor (121) back into the lower housing (2) of the speed reducer; Step 4: Reinstall the temperature transmitter (12) and the tee (11) and then return to Step 1.

2. The tubing cleaning method of an oil level and oil temperature display device for a speed reducer according to claim 1, characterized in that: The oil level gauge (9) is communicated with an oil pump (13). The inlet of the oil pump (13) is communicated with the speed reducer housing. A cooler (15) is provided on the oil level gauge (9).

3. The tubing cleaning method of an oil level and oil temperature display device for a reduction gearbox according to claim 2, characterized in that: A filter (14) is provided on the oil level gauge (9).

4. The oil pipe cleaning method of a decelerator oil level and oil temperature display device according to claim 1, characterized in that: It includes an oil pump controller, a reduction gear motor, a reduction gear motor control switch. The oil pump (13) is driven by an oil pump motor (131). The oil pump controller is electrically connected to the oil pump motor (131). The reduction gear motor is electrically connected to the reduction gear motor control switch. The reduction gear motor control switch is electrically connected to the oil pump controller. After the reduction gear motor control switch is closed, the oil pump controller starts the oil pump motor (131).

5. The oil pipe cleaning method of a decelerator oil level and oil temperature display device according to claim 1, characterized in that: A heating layer (17) is provided at a position between the temperature sensor (121) and the phase change layer (16), and between the phase change layer (16) and the cleaning layer.

6. The oil pipe cleaning method of a decelerator oil level and oil temperature display device according to claim 1, characterized in that: The tee joint (11) is provided in the middle of the horizontal pipe.

7. The oil pipe cleaning method of a decelerator oil level and oil temperature display device according to claim 1, characterized in that: The tee joint (11) is provided at the left end of the horizontal pipe.

Images