Closed maintenance underground speed reducer gear oil circulating cooling device

Abstract

The utility model discloses a closed maintenance underground speed reducer gear oil circulation cooling device which comprises a speed reducer shell, the outer surfaces of the two sides of the speed reducer shell are connected with a first transmission shaft and a second transmission shaft respectively, and a liquid injection spraying base is installed on the upper surface of the speed reducer shell. An oil liquid circulation mechanism is arranged on the side surface of one end of the speed reducer shell, and dust in the working environment is prevented from entering the speed reducer shell in a closed oil liquid replacement mode. According to the closed maintenance underground speed reducer gear oil circulating cooling device, a threaded hole is formed in the upper portion of a transmission shaft cavity in the top of an existing speed reducer shell so that oil can be conveniently injected into a connecting pipe, and a threaded hole is formed in the low position of the side face of the speed reducer shell so that oil can be conveniently pumped outwards; a liquid injection spraying seat is screwed into a threaded hole above a transmission shaft cavity at the top of the speed reducer shell and is replaced by a spherical stop valve or a plug when not connected with a connecting pipe, and underground dust is prevented from entering the speed reducer shell.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a closed maintenance underground reducer gear oil circulation cooling device. Background Art

[0002] Reducer is a commonly used power transmission mechanism. It is widely used in coal mine production working faces because of its large transportation volume, long service life and convenient maintenance. Most of the commonly used reducers in the market are traditional hard-toothed reducers. Take SGB-620 / 40T scraper conveyor as an example. Due to its "hard-to-hard" matching relationship, it must be lubricated continuously to ensure long-term operation. If the lubrication is not sufficient during operation, the shaft head, keyway, gear, bearing, etc. will often be worn and damaged, seriously affecting the production of the working face. When the reducer is running at high speed for a long time, the gears will heat up, causing the gas water in the air inside the cavity to liquefy, accelerating the rust of gears, bearings and shafts, and causing the reducer to fail to operate normally.

[0003] The reducers currently used in major domestic coal mines are inconvenient to use manual oiling when they are used underground, and the workers' ideological awareness is not in place. When gear oil is in short supply, they are easily replaced with lithium-based esters. Long-term operation will cause the reducer temperature to rise too quickly, and the reducer itself has insufficient air overflow capacity. The gear oil in the cavity will be more easily emulsified after mixing with lithium-based esters, thereby accelerating the damage of the reducer. At the same time, during the oiling process, due to the poor air environment underground, it is easy for dust and impurities to enter the reducer case when the reducer case is opened for oil replacement, causing the internal gears of the reducer to be affected by dust and impurities and accelerate wear. Utility Model Content

[0004] The utility model aims to provide a closed maintenance underground reducer gear oil circulation cooling device to solve the problem of inconvenient underground oil replacement proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed and maintained downhole reducer gear oil circulation cooling device, comprising a reducer housing, the outer surfaces of both sides of the reducer housing are respectively connected to a first transmission shaft and a second rotating shaft, an upper surface of the reducer housing is installed with a liquid injection spray seat, and a side surface of one end of the reducer housing is installed with a liquid extraction joint seat, and an oil circulation mechanism is provided on the side surface of one end of the reducer housing, which prevents dust in the working environment from entering the interior of the reducer housing by closed oil replacement.

[0006] Preferably, the oil circulation mechanism includes: a pneumatic diaphragm pump, which is fixedly mounted on the side surface of the reducer housing, and a connecting pipe is connected between the liquid outlet end of the pneumatic diaphragm pump and the liquid injection spray seat, a mounting plate is fixedly arranged on the side surface of the reducer housing where the pneumatic diaphragm pump is located, and a connecting plate is fixedly arranged on the upper surface of the mounting plate, one end of the liquid extraction joint seat is connected to a pipeline, and the pipeline at one end of the liquid extraction joint seat passes through the side surface of the connecting plate and is fixedly connected to a connecting pressure valve, the liquid inlet end of the pneumatic diaphragm pump is connected to a pipeline, and one end of the pipeline at the liquid inlet end of the pneumatic diaphragm pump passes through the side surface of the connecting plate and is fixedly connected to a connecting pressure valve, the lower end of the liquid injection spray seat is located inside the reducer housing, and the lower end of the liquid injection spray seat is arranged as a porous nozzle.

[0007] By adopting the above technical solution, the liquid injection spray seat can spray oil into the interior of the reducer housing for lubrication.

[0008] Preferably, the oil circulation mechanism also includes: an external oil tank, which is placed on the upper surface of the mounting plate, a liquid outlet pressure valve and a liquid inlet pressure valve are installed on the side surface of the external oil tank, and a liquid outlet cover is threadedly connected to the lower side surface of the external oil tank, a heat conduction plate is fixedly arranged inside the external oil tank, and a filter is connected between the upper end of the heat conduction plate close to the liquid outlet cover and the inner surface of the external oil tank, a heat sink is fixedly arranged on the outside of the reducer housing, and a sliding limit block is installed on the outer surface of one end of the mounting plate.

[0009] By adopting the above technical solution, the external oil tank can complete the replacement and replenishment of the oil inside the reducer housing in a closed state.

[0010] Preferably, the liquid outlet pressure valve and the liquid inlet pressure valve are respectively arranged opposite to the two connecting pressure valves on the surface of the connecting plate, and the liquid outlet pressure valve and the liquid inlet pressure valve are installed in engagement with the connecting pressure valves.

[0011] By adopting the above technical solution, the liquid outlet pressure valve and the liquid inlet pressure valve can transmit oil by engaging with the connecting pressure valve.

[0012] Preferably, one end of the liquid inlet pressure valve penetrating the inner surface of the external oil tank is located below the filter screen, and one end of the liquid inlet pressure valve penetrating the inner surface of the external oil tank is located on the side of the heat conduction plate facing the liquid outlet cover.

[0013] By adopting the above technical solution, the oil injected into the external oil tank by the liquid inlet pressure valve must be filtered by the filter before it can continue to circulate.

[0014] Preferably, the side surfaces of the heat conducting plate and the heat dissipation plate are evenly provided with plate-like protrusions designed to be inclined downward, and the two adjacent heat conducting plates are arranged alternately up and down, and the heat conducting plates and the heat dissipation plates are arranged one by one, and one end of the heat conducting plate is fixedly connected to the corresponding heat dissipation plate.

[0015] By adopting the above technical solution, the heat conducting plate can conduct the heat outward to the air outside the reducer housing through the heat dissipation plate.

[0016] Preferably, the upper end of the limit block passes through the upper surface of the mounting plate, and the upper end of the limit block is designed as a right-angled trapezoid, the right-angled side of the upper end of the limit block fits with the outer surface of the lower end of the external oil tank, and a spring is connected between the limit block and the mounting plate, and the inclined surface of the upper end of the limit block is set obliquely upward.

[0017] By adopting the above technical solution, the limit block can maintain a stable limit on the external oil tank under the support of the spring.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the closed maintenance underground reducer gear oil circulation cooling device:

[0019] 1. A threaded hole is opened above the drive shaft cavity at the top of the existing reducer housing to facilitate oil injection through the connecting pipe. A threaded hole is opened at the lower part of the side of the reducer housing to install a pumping joint seat to facilitate oil extraction. The injection spray seat is screwed into the threaded hole above the drive shaft cavity at the top of the reducer housing. When the connecting pipe is not connected, a ball stop valve or plug is used instead to prevent underground dust from entering the reducer housing;

[0020] 2. With the pneumatic diaphragm pump as the core, the pneumatic diaphragm pump uses compressed air as the power source. When the pneumatic diaphragm pump is started, the gear oil in the lower part of the reducer housing is filtered by the high-pressure filter and cooled by the heat exchange of the heat sink before being sucked into the pneumatic diaphragm pump. After being pressurized by the pneumatic diaphragm pump, it is sprayed into the three cavities of the reducer housing along the connecting pipe, thereby completing the internal spray lubrication of the gears and transmission shafts in different cavities of the reducer housing, and at the same time completing the filtration and cooling of the gear oil, ensuring the purity of the gear oil and avoiding the emulsification of the gear oil;

[0021] 3. The gear oil in the reducer housing needs to be replaced and replenished after running for a period of time. The external oil tank is placed on the upper surface of the mounting plate. When the oil needs to be replaced or replenished, only the external oil tank needs to be replaced. This can effectively avoid the gear oil being contaminated after the cover of the downhole reducer housing is opened, and can extend the service life of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0023] Figure 2This is a schematic diagram of the three-dimensional structure of the connection between the mounting plate and the external oil tank of the utility model;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the cut surface connecting the external oil tank and the heat conducting plate of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the external oil tank and the heat sink connected to the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the external oil tank and the filter screen connected to the utility model;

[0027] Figure 6 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0028] In the figure: 1. reducer housing; 2. first transmission shaft; 3. second rotating shaft; 4. liquid injection spray seat; 5. pneumatic diaphragm pump; 6. connecting pipe; 7. mounting plate; 8. connecting plate; 9. liquid extraction joint seat; 10. connecting pressure valve; 11. external oil tank; 12. liquid outlet pressure valve; 13. liquid inlet pressure valve; 14. liquid outlet cover; 15. heat conduction plate; 16. filter screen; 17. heat sink; 18. limit block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6 The utility model provides a technical solution: a closed maintenance downhole reducer gear oil circulation cooling device, comprising a reducer housing 1, the outer surfaces of both sides of the reducer housing 1 are respectively connected to the first transmission shaft 2 and the second rotating shaft 3, the upper surface of the reducer housing 1 is installed with a liquid injection spray seat 4, and the side surface of one end of the reducer housing 1 is installed with a liquid extraction joint seat 9, and the side surface of one end of the reducer housing 1 is provided with an oil circulation mechanism, which prevents dust in the working environment from entering the reducer housing 1 by closing the oil replacement method.

[0031] The oil circulation mechanism includes: a pneumatic diaphragm pump 5, which is fixedly mounted on the side surface of the reducer housing 1, and a connecting pipe 6 is connected between the liquid outlet end of the pneumatic diaphragm pump 5 and the liquid injection spray seat 4, a mounting plate 7 is fixedly arranged on the side surface of the reducer housing 1 where the pneumatic diaphragm pump 5 is located, and a connecting plate 8 is fixedly arranged on the upper surface of the mounting plate 7, one end of the liquid extraction joint seat 9 is connected to a pipeline, and the pipeline at one end of the liquid extraction joint seat 9 passes through the side surface of the connecting plate 8 and is fixedly connected to a connecting pressure valve 10, the liquid inlet end of the pneumatic diaphragm pump 5 is connected to a pipeline, and one end of the pipeline at the liquid inlet end of the pneumatic diaphragm pump 5 passes through the side surface of the connecting plate 8 and is fixedly connected to a connecting pressure valve 10, the lower surface of the liquid injection spray seat 4 The end is located inside the reducer housing 1, and the lower end of the liquid injection spray seat 4 is set as a porous nozzle, the oil circulation mechanism also includes: an external oil tank 11, the external oil tank 11 is placed on the upper surface of the mounting plate 7, the side surface of the external oil tank 11 is installed with a liquid outlet pressure valve 12 and a liquid inlet pressure valve 13, and the lower end side surface of the external oil tank 11 is threadedly connected with a liquid outlet cover 14, a heat conduction plate 15 is fixedly arranged inside the external oil tank 11, and a filter screen 16 is connected between the upper end of the heat conduction plate 15 close to the side of the liquid outlet cover 14 and the inner surface of the external oil tank 11, a heat sink 17 is fixedly arranged on the outside of the reducer housing 1, and a sliding limit block 18 is installed on the outer surface of one end of the mounting plate 7.

[0032] The liquid outlet pressure valve 12 and the liquid inlet pressure valve 13 are respectively arranged opposite to the two connecting pressure valves 10 on the surface of the connecting plate 8, and the liquid outlet pressure valve 12 and the liquid inlet pressure valve 13 are installed in engagement with the connecting pressure valve 10, and one end of the liquid inlet pressure valve 13 penetrating the inner surface of the external oil tank 11 is located below the filter screen 16, and one end of the liquid inlet pressure valve 13 penetrating the inner surface of the external oil tank 11 is located on the side of the heat conduction plate 15 facing the liquid outlet cover 14. In the normal working process, the pneumatic diaphragm pump 5 installed on the mounting plate 7 is first started, and the pneumatic diaphragm pump 5 The oil in the external oil tank 11 is extracted through the connecting pressure valve 10 that is engaged with the liquid outlet pressure valve 12 and sprayed into the three chambers inside the reducer housing 1 through the connecting pipe 6 and the liquid injection spray seat 4 for lubrication, so as to ensure that the first transmission shaft 2 and the second rotating shaft 3 can be stably transmitted. The lubricated oil is sucked out and injected into the external oil tank 11 through the connecting pressure valve 10 that is engaged with the liquid inlet pressure valve 13 on the surface of the connecting plate 8 through the liquid extraction joint seat 9. At this time, the oil is filtered by the filter net 16 to remove impurities and then enters the external oil tank 11 to continue circulating.

[0033] The side surfaces of the heat conducting plate 15 and the heat sink 17 are evenly provided with plate-like protrusions designed to be inclined downward, and the two adjacent heat conducting plates 15 are staggered up and down, and the heat conducting plate 15 and the heat sink 17 are arranged one by one. One end of the heat conducting plate 15 is fixedly connected to the corresponding heat sink 17. When the oil circulates in the external oil tank 11, the heat conducting plate 15 is in full contact with the oil to transfer the heat to the air outside the external oil tank 11 through the heat sink 17 connected at one end. The staggered design of the heat conducting plate 15 enables the oil to fully contact with the heat conducting plate 15 for heat exchange.

[0034] The upper end of the limit block 18 passes through the upper surface of the mounting plate 7, and the upper end of the limit block 18 is designed as a right-angled trapezoid. The right-angled side of the upper end of the limit block 18 fits with the outer surface of the lower end of the external oil tank 11, and a spring is connected between the limit block 18 and the mounting plate 7, and the inclined surface of the upper end of the limit block 18 is set obliquely upward. When the external oil tank 11 needs to be replaced, the limit block 18 is pressed downward so that the limit block 18 releases the limit on the external oil tank 11, and then the external oil tank 11 is slid so that the liquid outlet pressure valve 12 and the liquid inlet pressure valve 13 are disengaged from the corresponding connection pressure valve 10. At this time, the connection pressure valve 10 ensures that the reducer housing 1 is under normal pressure inside the reducer housing 1. The internal oil is relatively closed, and then the external oil tank 11 filled with clean oil is placed on the mounting plate 7 and slides. The external oil tank 11 squeezes the inclined surface of the limit block 18 so that the limit block 18 allows the external oil tank 11 to pass until the external oil tank 11 is engaged with the corresponding connected pressure valve 10 through the liquid outlet pressure valve 12 and the liquid inlet pressure valve 13. At this time, the limit block 18 slides up at a right angle under the support of the spring to restore the limit on the external oil tank 11, completing the replacement of the external oil tank 11. At this time, the liquid outlet cover 14 on one side of the replaced external oil tank 11 is opened to expose the liquid outlet, and the waste oil is poured out through the liquid outlet of the external oil tank 11, and the external oil tank 11 is cleaned and the oil is replaced.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed maintenance downhole reducer gear oil circulation cooling device, comprising a reducer housing (1), wherein the outer surfaces of both sides of the reducer housing (1) are respectively connected to a first transmission shaft (2) and a second rotating shaft (3), and characterized in that: The upper surface of the reducer housing (1) is provided with a liquid injection spray seat (4), and the surface of one end side of the reducer housing (1) is provided with a liquid extraction joint seat (9), and the surface of one end side of the reducer housing (1) is provided with an oil circulation mechanism, which prevents dust in the working environment from entering the interior of the reducer housing (1) by means of closed oil replacement; The oil circulation mechanism comprises: a pneumatic diaphragm pump (5), the pneumatic diaphragm pump (5) is fixedly mounted on the side surface of the reducer housing (1), and a connecting pipe (6) is connected between the liquid outlet end of the pneumatic diaphragm pump (5) and the liquid injection spray seat (4), a mounting plate (7) is fixedly arranged on the side surface of the reducer housing (1) where the pneumatic diaphragm pump (5) is located, and a connecting plate (8) is fixedly arranged on the upper surface of the mounting plate (7), and one end of the liquid extraction joint seat (9) is connected to A pipeline, and a pipeline at one end of the liquid extraction joint seat (9) penetrates the side surface of the connecting plate (8) and is fixedly connected to a connecting pressure valve (10), the liquid inlet end of the pneumatic diaphragm pump (5) is connected to a pipeline, and one end of the pipeline at the liquid inlet end of the pneumatic diaphragm pump (5) penetrates the side surface of the connecting plate (8) and is fixedly connected to a connecting pressure valve (10), the lower end of the liquid injection spray seat (4) is located inside the reducer housing (1), and the lower end of the liquid injection spray seat (4) is arranged as a multi-porous nozzle; The oil circulation mechanism further comprises: an external oil tank (11), the external oil tank (11) being placed on the upper surface of the mounting plate (7), a liquid outlet pressure valve (12) and a liquid inlet pressure valve (13) being mounted on the side surface of the external oil tank (11), and a liquid outlet cover (14) being threadedly connected to the lower side surface of the external oil tank (11), a heat conducting plate (15) being fixedly arranged inside the external oil tank (11), and a filter screen (16) being connected between the upper end of the heat conducting plate (15) on the side close to the liquid outlet cover (14) and the inner surface of the external oil tank (11), a heat dissipation plate (17) being fixedly arranged outside the reducer housing (1), and a sliding limit block (18) being mounted on the outer surface of one end of the mounting plate (7).

2. A closed maintenance downhole reducer gear oil circulation cooling device according to claim 1, characterized in that: The liquid outlet pressure valve (12) and the liquid inlet pressure valve (13) are respectively arranged opposite to the two connecting pressure valves (10) on the surface of the connecting plate (8), and the liquid outlet pressure valve (12) and the liquid inlet pressure valve (13) are mounted in engagement with the connecting pressure valves (10).

3. The closed maintenance downhole reducer gear oil circulation cooling device according to claim 1 is characterized in that: One end of the liquid inlet pressure valve (13) that penetrates the inner surface of the external oil tank (11) is located below the filter screen (16), and one end of the liquid inlet pressure valve (13) that penetrates the inner surface of the external oil tank (11) is located on the side of the heat conduction plate (15) facing the liquid outlet cover (14).

4. The closed maintenance downhole reducer gear oil circulation cooling device according to claim 1 is characterized in that: The side surfaces of the heat conducting plate (15) and the heat dissipating plate (17) are evenly provided with plate-shaped protrusions designed to be inclined downward, and two adjacent heat conducting plates (15) are arranged in an up-and-down staggered manner, and the heat conducting plates (15) and the heat dissipating plates (17) are arranged in a one-to-one correspondence, and one end of the heat conducting plate (15) is fixedly connected to the corresponding heat dissipating plate (17).

5. The closed maintenance downhole reducer gear oil circulation cooling device according to claim 1 is characterized in that: The upper end of the limit block (18) passes through the upper surface of the mounting plate (7), and the upper end of the limit block (18) is designed as a right-angled trapezoid. The right-angled side of the upper end of the limit block (18) fits the outer surface of the lower end of the external oil tank (11), and a spring is connected between the limit block (18) and the mounting plate (7), and the inclined surface of the upper end of the limit block (18) is arranged obliquely upward.

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