Outer circulation lubricating device of speed reducer

Abstract

A small amount of lubricating oil is added into a shell of the speed reducer, when the speed reducer starts to operate, a motor is started synchronously, the lubricating oil in the shell of the speed reducer enters an oil pump from an oil outlet, the motor drives the oil pump to feed the lubricating oil into a cooler, and after the lubricating oil is cooled by the cooler, the lubricating oil flows into the cooler. The lubricating oil flows into the first spray head and the second spray head located in the speed reducer shell, cooled lubricating oil is sprayed to the corresponding bearings and gears through the first spray head and the second spray head in a targeted mode, the bearings and the gears are precisely lubricated, abrasion is reduced, and the service life of the speed reducer is prolonged; the speed reducer can normally operate in a low-oil-level state, the situation that a large amount of oil leaks is avoided, the use amount of lubricating oil is reduced, waste is avoided, the operation cost is reduced, the cooled lubricating oil can rapidly cool bearings and gears in operation, and faults caused by long-time high-temperature operation of the speed reducer are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer lubrication, in particular to an external circulation lubrication device for a reducer. Background Art

[0002] In order to ensure the normal operation of the reducer used in the hoist at the cement production site and extend its service life, the bearings and gears in the reducer need to be lubricated to reduce the wear caused by the mutual friction between the bearings and gears during operation, and to absorb and conduct the heat generated during the operation of the equipment. At present, the lubrication method adopted by the reducer of the hoist is oil-immersed lubrication. This method requires adding a large amount of lubricating oil to the reducer so that the lubricating oil immerses all bearings and gears. In actual operation, excessive lubricating oil is generally added to the reducer to ensure the normal operation of the reducer bearings and gears.

[0003] However, when the reducer runs for too long or the frequency of daily maintenance is low, the reducer is prone to a large amount of oil leakage and overheating of the reducer bearings and gears, which leads to reducer failure. Not only that, oil-immersed lubrication requires regular maintenance measures such as replacing the lubricating oil and cleaning the inside of the reducer, which makes the reducer operating cost higher. Utility Model Content

[0004] The utility model aims to provide an external circulation lubrication device for a reducer, so as to solve the problems of large amount of oil leakage and overheating of reducer bearings and gears in the existing reducer lubrication, and to reduce the operating cost of the reducer.

[0005] In order to solve the above technical problems, the utility model provides a reducer external circulation lubrication device, including a reducer housing, a connecting base is fixed to the outer wall of the reducer housing, a cooler and an oil pump are installed on the connecting base, the oil pump is connected to a motor, the oil outlet of the oil pump is connected to the inlet of the cooler, the inlet of the oil pump is connected to the oil drain port of the reducer housing, a first nozzle is installed at the position of the reducer housing corresponding to the bearing, a second nozzle is installed at the position of the reducer housing corresponding to the gear, the first nozzle and the second nozzle are both located inside the reducer housing, and the first nozzle and the second nozzle are both connected to the outlet of the cooler.

[0006] As a preferred embodiment, the second nozzle is a fan-shaped nozzle, and the fan-shaped spray range formed by the second nozzle is toward the meshing position of the gears in the reducer housing and is parallel to the meshing position.

[0007] It is further worth noting that the first nozzle is a circular nozzle, and the nozzle of the first nozzle is inclined toward the roller of the bearing in the reducer housing.

[0008] As a preferred embodiment, the inclination angle of the nozzle of the first nozzle is 60-65°.

[0009] As a preferred implementation, a distributor is connected between the first nozzle, the second nozzle and the cooler.

[0010] As a preferred embodiment, the first nozzle is connected to the cooler through a first branch pipe, the second nozzle is connected to the cooler through a second branch pipe, and the pipe diameter ratio of the second branch pipe to the first branch pipe is 2-3.5:1.

[0011] It should be noted in the solution that the oil drain port of the reducer housing is connected to the inlet of the oil pump through a main pipeline, and a regulating valve is installed on one side of the main pipeline close to the reducer housing.

[0012] It is further worth noting that a filter is provided on the main pipeline, and the filter is located on a side of the regulating valve close to the reducer housing.

[0013] Compared with the prior art, the external circulation lubrication device for a reducer provided by the utility model has at least the following beneficial effects:

[0014] A cooler and an oil pump are installed on the outer wall of the reducer housing through a connecting base. The oil pump is connected to a motor. A small amount of lubricating oil is added to the reducer housing. When the reducer starts to operate, the motor is started synchronously. The oil outlet of the oil pump is connected to the inlet of the cooler. The inlet of the oil pump is connected to the oil drain port of the reducer housing. The lubricating oil in the reducer housing enters the oil pump from the oil drain port. The motor drives the oil pump to send the lubricating oil into the cooler. After the lubricating oil is cooled by the cooler, it flows into the first nozzle and the second nozzle located inside the reducer housing, and passes through the first nozzle installed at the position where the corresponding bearing of the reducer housing is located and the corresponding gear of the reducer housing. The second nozzle installed at the position specifically sprays the cooled lubricating oil on the bearings and gears in the reducer, accurately lubricates the bearings and gears, reduces the wear caused by friction during operation, and extends the service life of the reducer. Compared with oil-immersed lubrication, the reducer can operate normally under low oil level conditions, avoids large amounts of oil leakage, reduces the amount of lubricating oil used and avoids waste, thereby reducing the operating cost of the reducer. In addition, spraying the cooled lubricating oil can quickly cool down the running bearings and gears, preventing the reducer from malfunctioning due to long-term high-temperature operation, thereby ensuring the efficient and stable normal operation of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0016] Figure 1 A schematic diagram of the structure of an external circulation lubrication device for a reducer provided by the utility model;

[0017] Figure 2 A left-side cross-sectional schematic diagram of a second nozzle and a gear provided by the utility model;

[0018] In the figure: 1. reducer housing; 2. connecting base; 3. cooler; 4. oil pump; 5. motor; 6. bearing; 7. gear; 8. first nozzle; 9. second nozzle; 10. distributor; 11. first branch pipeline; 12. second branch pipeline; 13. main pipeline; 14. regulating valve; 15. filter. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0020] The core of the utility model is to provide an external circulation lubrication device for a reducer, which solves the problems of large amount of oil leakage and overheating of reducer bearings and gears in the existing reducer lubrication, and reduces the operating cost of the reducer.

[0021] Figure 1 This is a schematic diagram of the structure of a reducer external circulation lubrication device provided by the utility model. Figure 2 The second nozzle and gear provided by the utility model are shown in the left side cross-sectional diagram. Figure 1 to Figure 2 shown.

[0022] Example 1

[0023] A reducer external circulation lubrication device, comprising a reducer housing 1, referring to Figure 1The outer wall of the reducer housing 1 is fixed with a connecting base 2, and the cooler 3 and the oil pump 4 are installed on the outside of the reducer housing 1 through the connecting base 2. A small amount of lubricating oil is added to the reducer housing 1. It should be noted that the lowest liquid level of the lubricating oil in the reducer housing 1 should at least be in contact with the lowest side of the bearing 6 and the gear 7 inside the reducer housing 1. When the reducer starts to operate, the motor 5 is started synchronously. The motor 5 is connected to the oil pump 4. In the actual installation process, the motor and the oil pump can be an integrated assembly. The oil outlet of the oil pump 4 is connected to the inlet of the cooler 3, and the inlet of the oil pump 4 is connected to the reducer housing 1. The oil drain port is connected, the lubricating oil in the reducer housing 1 enters the oil pump 4, and the motor 5 drives the oil pump 4 to send the lubricating liquid into the cooler 3, and the lubricating oil is cooled by the cooler 3. The outlet of the cooler 3 is connected with the first nozzle 8 and the second nozzle 9. The first nozzle 8 is installed at the position of the reducer housing 1 corresponding to the bearing 6, and the second nozzle 9 is installed at the position of the reducer housing 1 corresponding to the gear 7. The cooled lubricating oil is sprayed on the corresponding bearing 6 and gear 7 respectively through the first nozzle 8 and the second nozzle 9. The first nozzle 8 and the second nozzle 9 are both located inside the reducer housing 1. See Figure 1 The lubricating oil leaked from the bearing 6 and the gear 7 and the excess lubricating oil during the spraying process flow down and gather at the bottom of the reducer housing 1, and then flow from the oil drain port of the reducer housing 1 through the oil pump 4 into the cooler for cooling, and then sprayed out through the first nozzle 8 and the second nozzle 9, so as to realize the recycling of the lubricating oil. Compared with oil-immersed lubrication, the first nozzle 8 and the second nozzle 9 can accurately lubricate the bearings 6 and gears 7 in the reducer when the oil level of the reducer is low, thereby reducing the operating wear of the bearings 6 and gears 7, extending the service life of the reducer, avoiding large amounts of oil leakage in the reducer, reducing the amount of lubricating oil used and avoiding waste, thereby effectively reducing the operating cost of the reducer. The lubricating oil cooled after the cooler 3 can cool the running bearings 6 and gears 7, preventing the reducer from malfunctioning due to long-term high-temperature operation, and ensuring the efficient and stable normal operation of the hoist.

[0024] In some preferred implementations, the second nozzle 9 is a fan-shaped nozzle, and the fan-shaped spray range formed by the second nozzle 9 is toward the meshing position of the gear 7 in the reducer housing 1 and parallel to the meshing position, see Figure 2During the operation of the reducer, the gears 7 mainly rub against each other at the meshing point and generate heat. Targeted spraying of lubricating oil at the meshing point can improve the effective utilization rate of the lubricating oil while ensuring the lubrication and cooling effect. The fan-shaped nozzle has a wider spraying range, which can make the lubricating oil spray cover the gears 7. The meshing point between the gears 7 forms a rectangular cross-section. The fan-shaped arc surface formed by the lubricating oil sprayed by the second nozzle 9 is consistent with the rectangular cross-section. As the meshing gears 7 rotate, all gears 7 can be lubricated. Furthermore, unlike the gears 7, when the reducer is running, the bearings 6 are mainly balls, rollers and The first nozzle 8 is a circular nozzle. The circular nozzle can more accurately spray the lubricating oil into the relative friction part of the bearing 6 during operation. The nozzle of the first nozzle 8 is inclined toward the roller of the bearing 6 in the reducer housing 1. The nozzle of the first nozzle 8 is directly facing the bearing, which makes it easy for the lubricating oil to be sprayed on the bearing jacket. The inclined design of the nozzle facilitates the lubricating oil to enter the roller and slide of the bearing 6, thereby improving the lubrication effect. Preferably, the inclination angle of the nozzle of the first nozzle 8 is 60-65°, that is, an angle of 60-65° is formed between the nozzle of the first nozzle 8 and the bearing.

[0025] Example 2

[0026] Based on Example 1, preferably, a distributor 10 is connected between the first nozzle 8, the second nozzle 9 and the cooler 3, see Figure 1 , the lubricating oil cooled by the cooler 3 can be distributed to each branch pipeline through the distributor 10, and then the lubricating oil is synchronously transported to the lubrication points where each nozzle is located by each branch pipeline, realizing one inlet and multiple outlets, reducing the time difference when the lubricating oil starts to enter each branch pipeline for transportation, and making the lubricating oil evenly distributed for spraying. Furthermore, since the amount of lubricating oil required for lubrication of the gear 7 is more than the lubricating oil required for lubrication of the bearing 6, the first nozzle 8 is connected to the cooler 3 through the first branch pipeline 11, and the second nozzle 9 is connected to the cooler 3 through the second branch pipeline 12. The pipe diameter ratio of the second branch pipe 12 to the first branch pipe 11 is 2-3.5:1. By controlling the pipe diameter of the second branch pipe 12 connected to the second nozzle 9 corresponding to the internal gear 7 of the corresponding reducer, the amount of lubricating oil distributed by the distributor 10 to the second nozzle 9 can be greater than the amount of lubricating oil distributed to the first nozzle 8. The pipe diameters of the second branch pipe 12 and the first branch pipe 11 are designed according to the amount of lubricating oil required for the gear 7 and the bearing 6, which can stably regulate the amount of lubricating oil sprayed, and specifically ensure that the gear 7 and the bearing 6 are fully lubricated while using only a small amount of lubricating oil.

[0027] See also Figure 1In order to facilitate the inspection and maintenance of the external circulation lubrication device, the oil drain port of the reducer housing 1 is connected to the inlet of the oil pump 4 through the main pipeline 13. A regulating valve 14 is installed on the side of the main pipeline 13 close to the reducer housing 1. When the regulating valve 14 is completely closed, the lubricating oil inside the reducer housing 1 stops flowing into the oil pump 4 through the main pipeline 13. At this time, there is no lubricating oil in the external circulation lubrication device, which is convenient for the staff to inspect and maintain the device and replace the lubricating oil in the reducer housing 1. In addition, the amount of lubricating oil entering the external circulation lubrication device can be adjusted by controlling the regulating valve 14, so as to adjust the lubrication frequency and the total amount of lubricating oil used in each lubrication according to actual needs. Further, a filter 15 is provided on the main pipeline 13. The filter 15 is located on the side of the regulating valve 14 close to the reducer housing 1. The used lubricating oil will be mixed with a small amount of impurities. After filtering through the filter 15, the cleanliness of the lubricating oil used during lubrication can be ensured, and impurities in the lubricating oil can be prevented from clogging the gears 7 and bearings 6. The filtered lubricating oil can extend the number of cycles, ensuring the lubrication effect while reducing costs.

[0028] The utility model installs a cooler 3 and an oil pump 4 on the outer wall of the reducer housing 1 by connecting the base 2, and adds a small amount of lubricating oil to the reducer housing 1. When the reducer starts to operate, the motor 5 is started synchronously, and the lubricating oil in the reducer housing 1 enters the oil pump 4 from the oil drain port. The motor 5 drives the oil pump 4 to send the lubricating oil into the cooler 3. After the lubricating oil is cooled by the cooler 3, it flows into the first nozzle 8 and the second nozzle 9 located inside the reducer housing 1. The first nozzle 8 installed at the position where the reducer housing 1 corresponds to the bearing 6 and the second nozzle 9 installed at the position where the reducer housing 1 corresponds to the gear 7 have needles. The cooled lubricating oil is sprayed on the bearing 6 and gear 7 in the reducer housing 1 to accurately lubricate the bearing 6 and gear 7, reduce the wear caused by friction during operation, and extend the service life of the reducer. Compared with oil-immersed lubrication, the reducer can operate normally at a low oil level to avoid a large amount of oil leakage, reduce the amount of lubricating oil used to avoid waste, thereby reducing the operating cost of the reducer. Spraying the cooled lubricating oil can quickly cool the running bearing 6 and gear 7 to prevent the reducer from malfunctioning due to long-term high-temperature operation, thereby ensuring that the hoist can operate efficiently and stably.

[0029] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the application disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art disclosed by the present invention. The specification and examples are to be regarded as exemplary only, and the true scope of the present invention is indicated by the claims.

[0030] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A reducer external circulation lubrication device, characterized in that: include: A reducer housing (1), wherein a connecting base (2) is fixed to the outer wall of the reducer housing (1), a cooler (3) and an oil pump (4) are installed on the connecting base (2), the oil pump (4) is connected to a motor (5), the oil outlet of the oil pump (4) is connected to the inlet of the cooler (3), the inlet of the oil pump (4) is connected to the oil drain port of the reducer housing (1), a first nozzle (8) is installed at a position of the reducer housing (1) corresponding to the bearing (6), and a second nozzle (9) is installed at a position of the reducer housing (1) corresponding to the gear (7), the first nozzle (8) and the second nozzle (9) are both located inside the reducer housing (1), and the first nozzle (8) and the second nozzle (9) are both connected to the outlet of the cooler (3).

2. The external circulation lubrication device for a reducer according to claim 1, characterized in that: The second nozzle (9) is a fan-shaped nozzle, and the fan-shaped spray range formed by the second nozzle (9) is oriented toward the meshing position of the gear (7) inside the reducer housing (1) and is parallel to the meshing position.

3. A reducer external circulation lubrication device according to claim 2, characterized in that: The first nozzle (8) is a circular nozzle, and the nozzle of the first nozzle (8) is inclined toward the roller of the bearing (6) in the reducer housing (1).

4. The external circulation lubrication device for a reducer according to claim 3 is characterized in that: The inclination angle of the nozzle of the first nozzle (8) is 60-65°.

5. The external circulation lubrication device for a reducer according to claim 1, characterized in that: A distributor (10) is connected between the first nozzle (8), the second nozzle (9) and the cooler (3).

6. The external circulation lubrication device for a reducer according to claim 5, characterized in that: The first nozzle (8) is connected to the cooler (3) via a first branch pipe (11), and the second nozzle (9) is connected to the cooler (3) via a second branch pipe (12), wherein the pipe diameter ratio of the second branch pipe (12) to the first branch pipe (11) is 2-3.5:

1.

7. The external circulation lubrication device for a reducer according to claim 1, characterized in that: The oil drain port of the reducer housing (1) is connected to the inlet of the oil pump (4) via a main pipeline (13), and a regulating valve (14) is installed on one side of the main pipeline (13) close to the reducer housing (1).

8. The external circulation lubrication device for a reducer according to claim 7, characterized in that: The main pipeline (13) is provided with a filter (15), and the filter (15) is located on a side of the regulating valve (14) close to the reducer housing (1).

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