Lubricating system of elastic metal plastic tile

Abstract

The invention discloses a lubricating system of an elastic metal plastic tile, and relates to the technical field of bearing lubrication. The lubricating system of the elastic metal plastic tile comprises a thrust oil groove, a thrust bearing and an annular oil supply pipe are arranged in the thrust oil groove, the annular oil supply pipe is connected with a circulating oil inlet main pipe, the circulating oil inlet main pipe comprises a first oil inlet branch pipe with a first valve and a second oil inlet branch pipe with a second valve, and the first oil inlet branch pipe is connected with a main filtering mechanism. The second oil inlet branch pipe is connected with a standby filtering mechanism, the main filtering mechanism and the standby filtering mechanism are connected with a circulation oil outlet main pipe, and the inlet end of the circulation oil outlet main pipe is connected with the thrust oil groove. In the abnormal state, the standby filtering mechanism replaces the main filtering mechanism to convey lubricating oil to the bearing, continuous operation of the hydro-generator is not affected, and therefore the power generation efficiency of the hydro-generator is guaranteed. And meanwhile, as the standby filtering mechanism continues to convey the lubricating oil, large abrasion cannot be caused, and the use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of bearing lubrication, and in particular to a lubrication system of an elastic metal plastic tile. Background Art

[0002] The bearing is an important part of the hydro-turbine generator set. It supports the weight of the entire equipment. The safety and reliability of its operation are directly related to the safe and stable operation of the entire equipment. In the prior art, the bearing is mainly composed of a mirror plate, an elastic metal plastic tile, and a bearing thrust head. The elastic metal plastic tile cooperates with the mirror plate or the thrust flange to support the axial load of the unit.

[0003] At present, the lubrication and oil supply methods for the bearings of hydro-turbine generator sets mainly adopt immersion lubrication and oil spray lubrication. Among them, oil spray lubrication refers to adding an oil spray pipe at the interval position of the elastic metal plastic tile, and arranging multiple oil spray holes on the oil spray pipe. When the unit is running, oil is sprayed to the mirror plate through multiple oil spray holes, and the mirror plate rotates to bring the lubricating oil into the oil inlet edge of the elastic metal plastic tile. Another type of oil spray lubrication is to open a hole on the outer diameter of the oil inlet edge of the elastic metal plastic tile to supply oil, and arrange multiple oil supply holes on the oil inlet edge. The effect of oil spray lubrication is greatly affected by the oil pump. If the oil pump suddenly fails, it will not be able to supply oil to the bearing normally. Then the hydro-turbine generator will cause greater wear if it continues to run, and if the hydro-turbine generator stops running, it will affect the power generation efficiency.

[0004] Therefore, the prior art needs to be improved. Summary of the invention

[0005] The technical problem to be solved by the present invention is that in the prior art, if there is a problem with the oil supply of the oil pump, it will cause greater wear or affect the power generation efficiency. The purpose is to provide a lubrication system for elastic metal plastic tiles, which adopts corresponding technical solutions and has the beneficial effect of eliminating wear when a fault occurs and ensuring the power generation efficiency of the hydro-generator.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention provides a lubrication system for an elastic metal plastic tile, which comprises a thrust oil groove, a bearing and an annular oil supply pipe surrounding the bearing are arranged in the thrust oil groove, the annular oil supply pipe is connected to a circulating oil inlet main pipe, the circulating oil inlet main pipe comprises a first oil inlet branch pipe with a first valve and a second oil inlet branch pipe with a second valve, the first oil inlet branch pipe is connected to a main filtering mechanism, the second oil inlet branch pipe is connected to a spare filtering mechanism, the main filtering mechanism and the spare filtering mechanism are connected to a circulating oil outlet main pipe, the inlet end of the circulating oil outlet main pipe is connected to the thrust oil groove, the main filtering mechanism filters and circulates the oil in a normal state, and the spare filtering mechanism filters and circulates the oil in an abnormal state.

[0008] In the above technical solution, in an abnormal state, the standby filter mechanism replaces the main filter mechanism to deliver lubricating oil to the bearing, which does not affect the continued operation of the hydro-generator, thereby ensuring the power generation efficiency of the hydro-generator. At the same time, since the standby filter mechanism continues to deliver lubricating oil, it will not cause significant wear and tear, and the use effect is better.

[0009] Furthermore, in the present invention, the above also includes a UPS redundant power supply, the UPS redundant power supply is connected to a status monitor, the main filtering mechanism includes a main oil pump and a main filter, the standby filtering mechanism includes a standby oil pump and a standby filter, and the status monitor is connected to two power supply circuits respectively connected to the main oil pump and the standby oil pump.

[0010] Furthermore, in the present invention, the above-mentioned circulating oil inlet main pipe is provided with a temperature / pressure flow sensor, a pressure reducing valve and a relief valve.

[0011] Furthermore, in the present invention, a central support is provided in the thrust oil groove, the central support is provided with an oil supply hole, and the annular oil supply pipe is connected to a nozzle connected to the oil supply hole.

[0012] Furthermore, in the present invention, the central support is provided with an oil spraying groove parallel to the tile base, the oil spraying groove is provided with a plurality of oil spraying holes evenly spaced, and the oil spraying holes are connected with the oil supply hole.

[0013] Furthermore, in the present invention, an oil side groove is provided on the oil outlet side of the oil spray groove along the rotation direction.

[0014] Furthermore, in the present invention, the width of the oil edge groove is 6mm-15mm, and the depth of the oil edge groove is 0.3mm-0.5mm.

[0015] Furthermore, in the present invention, the above-mentioned oil injection groove is 10mm-30mm away from the bearing surface, and the area of ​​the oil injection groove accounts for 3%-5% of the bearing area.

[0016] Furthermore, in the present invention, during the above operation, the lubricating oil level is 2 mm to 5 mm lower than the working surface of the elastic metal plastic tile.

[0017] Furthermore, in the present invention, a cooler is provided on the outer wall of the thrust oil groove.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] In the lubrication system of the elastic metal plastic tile of the present invention, the lubricating oil is fed into the bearing by the annular oil supply pipe and the circulating oil inlet pipe, and then the lubricating oil in the thrust oil tank is extracted by the circulating oil outlet pipe. In the normal state, the first valve is opened and the second valve is closed, and only the main filter mechanism works. When the main filter mechanism fails, it is an abnormal state. The first valve is immediately closed and the second valve is opened, and only the backup filter mechanism works. In the abnormal state, the backup filter mechanism replaces the main filter mechanism to feed the lubricating oil to the bearing, which does not affect the continued operation of the hydro-turbine generator, thereby ensuring the power generation efficiency of the hydro-turbine generator. At the same time, since the backup filter mechanism continues to feed the lubricating oil, it will not cause greater wear and tear, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 A schematic diagram of a lubrication system for an elastic metal plastic tile of the present invention;

[0022] Figure 2 It is a schematic diagram of the annular oil supply pipe and the central support of the present invention;

[0023] Figure 3 It is a schematic diagram of the oil side groove, oil spray groove and oil supply hole of the present invention.

[0024] Markings and corresponding parts names in the attached drawings: 1-thrust oil groove, 101-bearing, 2-annular oil supply pipe, 201-nozzle, 3-circulating oil inlet main pipe, 301-first oil inlet branch pipe, 302-second oil inlet branch pipe, 303-first valve, 304-second valve, 4-main filtering mechanism, 401-main oil pump, 402-main filter, 5-standby filtering mechanism, 501-standby oil pump, 502-standby filter, 6-circulating oil outlet main pipe, 7-UPS redundant power supply, 701-status monitor, 702-power supply circuit, 703-power indicator, 8-cooler, 9-temperature / pressure flow sensor, 10-pressure reducing valve, 11-overflow valve, 12-center support, 1201-oil supply hole, 1202-oil spray groove, 1203-oil spray hole, 1204-oil side groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation mode of the present invention and its description are only used to explain the present invention and are not intended to limit the present invention. The following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] Example

[0028] Reference Figures 1 to 3 As shown, a lubrication system of an elastic metal plastic tile according to an embodiment of the present invention is shown, and the specific structure is described as follows.

[0029] Combination Figure 1 As shown, the lubrication system of the elastic metal plastic tile of this embodiment is mainly used on the thrust bearing of the hydro-turbine generator, and is used to provide a good lubrication effect on the thrust bearing. The lubrication system of the elastic metal plastic tile includes five parts: an annular oil supply pipe 2, a circulating oil inlet pipe 3, a main filtering mechanism 4, a standby filtering mechanism 5 and a circulating oil outlet pipe 6.

[0030] Further, combined with Figure 1 As shown, there is a thrust oil groove 1 inside the thrust bearing, a bearing 101 is installed in the thrust oil groove 1, and an annular oil supply pipe 2 is also installed. The annular oil supply pipe 2 sprays lubricating oil to lubricate the bearing 101, so as to facilitate the rolling of the bearing 101.

[0031] In some implementations of this embodiment, Figure 1As shown, the annular oil supply pipe 2 is provided with an oil inlet, which is connected to the oil outlet of the circulating oil inlet main pipe 3. The circulating oil inlet main pipe 3 is equipped with a temperature / pressure flow sensor 9, a pressure reducing valve 10 and a relief valve 11, and the pressure reducing valve 10 is located on the upstream side of the temperature / pressure flow sensor 9. The temperature / pressure flow sensor 9 is used to detect the temperature and pressure of the fluid in the circulating oil inlet main pipe 3 to ensure that the temperature and pressure of the lubricating oil input from the circulating oil inlet main pipe 3 to the thrust oil groove 1 are appropriate.

[0032] It should be noted that when the temperature / pressure flow sensor 9 detects that the lubricating oil pressure in the circulating oil inlet main pipe 3 is too high, the lubricating system of the elastic metal plastic tile can control the oil delivery power of the main filter mechanism 4 or the backup filter mechanism 5, thereby reducing the lubricating oil pressure in the circulating oil inlet main pipe 3. It can also control the pressure reducing valve 10 and the overflow valve 11 to open, thereby reducing the lubricating oil pressure in the circulating oil inlet main pipe 3.

[0033] Combination Figure 1 As shown, the oil inlet of the circulating oil inlet main pipe 3 is connected to a tee, which is respectively connected to a first oil inlet branch pipe 301 and a second oil inlet branch pipe 302, the first oil inlet branch pipe 301 is connected to the main filtering mechanism 4, and the second oil inlet branch pipe 302 is connected to the standby filtering mechanism 5. A first valve 303 is installed on the first oil inlet branch pipe 301, and a second valve 304 is installed on the second oil inlet branch pipe 302. Both the first valve 303 and the second valve 304 are electrically controlled one-way valves, which have the advantage of convenient control and can also prevent the backflow of lubricating oil.

[0034] Further, combined with Figure 1 As shown, the main filter mechanism 4 is the main oil supply device, and in normal state, the lubricating oil is supplied by the main filter mechanism 4. When the main filter mechanism 4 fails and cannot supply oil, it is an abnormal state, and the standby filter mechanism 5 supplies lubricating oil in the abnormal state.

[0035] Furthermore, combined Figure 1 As shown, the main filtering mechanism 4 includes a main oil pump 401 and a main filter 402, and the standby filtering mechanism 5 includes a standby oil pump 501 and a standby filter 502. Both the main filter 402 and the standby filter 502 are lubricating oil filters in the prior art. The oil outlet of the main filter 402 is connected to the oil inlet of the first oil inlet branch pipe 301, and the first valve 303 is installed on the first oil inlet branch pipe 301; the oil outlet of the standby filter 502 is connected to the oil inlet of the second oil inlet branch pipe 302, and the second valve 304 is installed on the second oil inlet branch pipe 302.

[0036] In some implementations of this embodiment, Figure 1As shown, the oil inlet of the main filter 402 and the oil outlet of the main oil pump 401 are connected through an oil pipe; the oil inlet of the standby filter 502 and the oil outlet of the standby oil pump 501 are connected through an oil pipe. The oil inlet of the main oil pump 401 is connected to a first oil inlet branch pipe 301, and the oil inlet of the standby oil pump 501 is connected to a second oil inlet branch pipe 302. The first oil inlet branch pipe 301 and the second oil inlet branch pipe 302 are connected to a tee, which is connected to the oil outlet of the circulating oil outlet main pipe 6. The circulating oil outlet main pipe 6 is connected to the thrust oil tank 1 to extract the lubricating oil in the thrust oil tank 1.

[0037] Furthermore, the lubrication system of the elastic metal plastic tile also includes a UPS redundant power supply 7, on which a power indicator 703 is installed, and the power indicator 703 is used to display the working status of the UPS redundant power supply 7. The UPS redundant power supply 7 is connected to a status monitor 701 through a wire, and the status monitor 701 is connected to two power supply circuits 702, and the two power supply circuits 702 are respectively connected to the main oil pump 401 and the standby oil pump 501.

[0038] It should be noted that, combined with Figure 1 As shown, a cooler 8 is provided on the outer wall of the thrust oil groove 1 , and a plurality of coolers 8 are evenly spaced and distributed. The cooler 8 may adopt heat dissipation fins to dissipate heat from the thrust oil groove 1 .

[0039] In some implementations of this embodiment, Figure 2 and Figure 3 As shown, a plurality of evenly spaced center supports 12 are arranged in the thrust oil groove 1, and an oil supply hole 1201 is opened on the outer side of the center support 12. The annular oil supply pipe 2 is connected with nozzles 201 corresponding to the number of the center supports 12, and the nozzles 201 and the oil supply holes 1201 are connected.

[0040] Further, combined with Figure 2 and Figure 3 As shown, an oil injection groove 1202 is installed on the center support 12 at a position 10mm to 30mm (25mm is selected in this embodiment) from the oil inlet edge of the bearing surface, the oil injection groove 1202 is parallel to the bearing base, the area of ​​the oil injection groove 1202 accounts for 3% to 5% of the bearing area (5% is selected in this embodiment), and the groove depth of the oil injection groove 1202 is 1.5mm to 2.5mm (2mm is selected in this embodiment).

[0041] And, if Figure 3 As shown, five evenly spaced injection holes 1203 are provided in the injection slot 1202, and the area of ​​all the injection holes 1203 accounts for 13% to 15% (15% is selected in this embodiment) of the area of ​​the injection slot 1202. The injection holes 1203 are connected to the oil supply hole 1201, and the lubricating oil entering the oil supply hole 1201 flows out from the injection holes 1203.

[0042] Combination Figure 3 As shown, lubrication is provided to the elastic metal plastic tile and the bearing 101 through the oil injection hole 1203, and the central support 12 supplies oil to the elastic metal plastic tile, which can effectively improve the establishment of the dynamic pressure lubricating oil wedge. The oil injection pressure is increased by injecting oil through the oil injection hole 1203 on the oil inlet side, which is beneficial to the formation of the oil film. The oil injection groove 1202 on the oil inlet side can store a certain amount of lubricating oil, and an oil side groove 1204 with a width of 6mm to 15mm (10㎜ is selected in this embodiment) and a depth of 0.3mm to 0.5mm (0.4㎜ is selected in this embodiment) is processed on the oil outlet side of the oil injection groove 1202 along the rotation direction, which is also beneficial to the unit turning and has a better use effect.

[0043] It should be noted that when the lubrication system of the elastic metal plastic tile is lubricated by oil spraying, the lubricating oil level is always 2mm-5mm lower than the working surface of the elastic metal plastic tile, thereby ensuring timely cooling of the bearing 101 during operation.

[0044] In this embodiment, the elastic metal plastic bearing of the central support 12 of the thrust bearing adopts an aramid-modified polytetrafluoroethylene double-layer plastic composite bearing with a wear coefficient of 1.82×10-10. When the line speed is greater than 0.8m / s and the unit pressure is 0 to 7MPa, the lubrication system of the elastic metal plastic bearing can resume oil supply within 3s to 5s when an abnormal situation occurs. The elastic metal plastic bearing can ensure the safe and stable operation of the unit.

[0045] The lubrication system of the elastic metal plastic tile is equipped with a main filter mechanism 4 and a backup filter mechanism 5, one as the main and the other as the backup. It is also equipped with a temperature / pressure flow sensor 9, a UPS redundant power supply 7, a state monitor 701, a data acquisition system and a host computer. The main filter mechanism 4 and the backup filter mechanism 5 are redundant with each other, and the switching time is 0.6s-1.5s. On this basis, a UPS redundant power supply 7 and a state monitor 701 are set. The state monitor 701 obtains the power supply logic after power failure based on the real-time state feedback data of the main oil pump 401 and the backup oil pump 501 driving the frequency converter. The UPS redundant power supply 7 is a device that automatically switches to a backup power supply within 0.3s-0.6s after the city power is cut off. It ensures the continuous power supply operation of the main oil pump 401 and the backup oil pump 501 after the power is cut off, and ensures the continuous lubrication of the hydro-turbine generator set before stopping in an abnormal state. The continuous power supply time is determined by the UPS battery configuration.

[0046] The working principle of the lubrication system of the elastic metal plastic tile of the present invention is as follows:

[0047] In the lubrication system of the thrust bearing 101 of the present invention, the lubricating oil is fed into the bearing 101 by the annular oil supply pipe 2 and the circulating oil inlet pipe 3, and the lubricating oil in the thrust oil tank 1 is then drawn out by the circulating oil outlet pipe 6. In the normal state, the first valve 303 is opened and the second valve 304 is closed, and only the main filter mechanism 4 works. When the main filter mechanism 4 fails, it is an abnormal state, and the first valve 303 is immediately closed and the second valve 304 is opened, and only the standby filter mechanism 5 works. In the abnormal state, the standby filter mechanism 5 replaces the main filter mechanism 4 to deliver lubricating oil to the bearing 101, which does not affect the continued operation of the hydro-turbine generator, thereby ensuring the power generation efficiency of the hydro-turbine generator. At the same time, since the standby filter mechanism 5 continues to deliver lubricating oil, it will not cause greater wear and tear, and the use effect is better.

[0048] In addition, an external lubricating oil cooling device can be connected in series in the circulating oil outlet main pipe 6, so that the temperature of the reflux hot lubricating oil can be reduced after passing through the external lubricating oil cooling device, thereby controlling the temperature of the lubricating oil entering the thrust oil tank 1 to be maintained at a preset value. The lubrication system of the elastic metal plastic tile is equipped with a programmable logic controller, a data acquisition system and a host computer, which can collect and analyze the flow, pressure, temperature and other information collected in the lubrication system of the elastic metal plastic tile, and adjust the oil supply according to the preset data comparison of the lubrication system of the elastic metal plastic tile, so as to achieve the function of energy saving and emission reduction. The interface reserved by the data acquisition system can also be interconnected with the operation and maintenance system of the host, and a more comprehensive data comparison and analysis can be performed with the thrust bearing operation information collected by the operation and maintenance system.

[0049] In summary, the present invention provides a lubrication system for an elastic metal plastic tile, which includes a thrust oil groove 1, a bearing 101 and an annular oil supply pipe 2 surrounding the bearing 101 are arranged in the thrust oil groove 1, the annular oil supply pipe 2 is connected to a circulating oil inlet main pipe 3, the circulating oil inlet main pipe 3 includes a first oil inlet branch pipe 301 with a first valve 303 and a second oil inlet branch pipe 302 with a second valve 304, the first oil inlet branch pipe 301 is connected to a main filtering mechanism 4, the second oil inlet branch pipe 302 is connected to a spare filtering mechanism 5, the main filtering mechanism 4 and the spare filtering mechanism 5 are connected to a circulating oil outlet main pipe 6, the inlet end of the circulating oil outlet main pipe 6 is connected to the thrust oil groove 1, the main filtering mechanism 4 filters and circulates the oil in a normal state, and the spare filtering mechanism 5 filters and circulates the oil in an abnormal state. It also includes a UPS redundant power supply 7, which is connected to a state monitor 701. The main filtering mechanism 4 includes a main oil pump 401 and a main filter 402. The standby filtering mechanism 5 includes a standby oil pump 501 and a standby filter 502. The state monitor 701 is connected to two power supply circuits 702 respectively connected to the main oil pump 401 and the standby oil pump 501. The circulating oil inlet main pipe 3 is provided with a temperature / pressure flow sensor 9, a pressure reducing valve 10 and a relief valve 11. A central support 12 is provided in the thrust oil tank 1, and the central support 12 is provided with an oil supply hole 1201. The annular oil supply pipe 2 is connected to a nozzle 201 connected to the oil supply hole 1201. The central support 12 is provided with an oil injection groove 1202 parallel to the tile base, and the oil injection groove 1202 is provided with a plurality of evenly spaced oil injection holes 1203, and the oil injection holes 1203 are connected to the oil supply hole 1201. An oil side groove 1204 is provided on the oil outlet side of the oil injection groove 1202 along the rotation direction. The width of the oil side groove 1204 is 6mm-15mm, and the depth of the oil side groove 1204 is 0.3mm-0.5mm. The distance between the oil injection groove 1202 and the bearing surface is 10mm-30mm, and the area of ​​the oil injection groove 1202 accounts for 3%-5% of the bearing area. During operation, the lubricating oil level is 2㎜-5mm lower than the working surface of the elastic metal plastic bearing. A cooler 8 is provided on the outer wall of the thrust oil groove 1. Therefore, the lubrication system of the elastic metal plastic bearing of the present invention has the beneficial effect of eliminating wear when a fault occurs and ensuring the power generation efficiency of the hydro-generator.

[0050] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lubrication system for elastic metal plastic tiles, characterized in that: The invention comprises a thrust oil groove (1), wherein a bearing (101) and an annular oil supply pipe (2) surrounding the bearing (101) are arranged in the thrust oil groove (1), wherein the annular oil supply pipe (2) is connected to a circulating oil inlet main pipe (3), wherein the circulating oil inlet main pipe (3) comprises a first oil inlet branch pipe (301) with a first valve (303) and a second oil inlet branch pipe (302) with a second valve (304), wherein the first oil inlet branch pipe (301) is connected to a main filtering mechanism (4), wherein the second oil inlet branch pipe (302) is connected to a standby filtering mechanism (5), wherein the main filtering mechanism (4) and the standby filtering mechanism (5) are connected to a circulating oil outlet main pipe (6), wherein the inlet end of the circulating oil outlet main pipe (6) is connected to the thrust oil groove (1), wherein the main filtering mechanism (4) filters and circulates the oil in a normal state, and the standby filtering mechanism (5) filters and circulates the oil in an abnormal state.

2. The lubrication system of the elastic metal plastic tile according to claim 1, characterized in that: The invention also comprises a UPS redundant power supply (7), wherein the UPS redundant power supply (7) is connected to a status monitor (701), the main filtering mechanism (4) comprises a main oil pump (401) and a main filter (402), the standby filtering mechanism (5) comprises a standby oil pump (501) and a standby filter (502), and the status monitor (701) is connected to two power supply circuits (702) respectively connected to the main oil pump (401) and the standby oil pump (501).

3. The lubrication system of the elastic metal plastic tile according to claim 2, characterized in that: The circulating oil inlet main pipe (3) is provided with a temperature / pressure flow sensor (9), a pressure reducing valve (10) and a relief valve (11).

4. The lubrication system of the elastic metal plastic tile according to claim 1, characterized in that: The thrust oil groove (1) is provided with a central support (12), the central support (12) is provided with an oil supply hole (1201), and the annular oil supply pipe (2) is connected to a nozzle (201) connected to the oil supply hole (1201).

5. The lubrication system of the elastic metal plastic tile according to claim 4, characterized in that: The central support (12) is provided with an oil injection groove (1202) parallel to the tile base, and the oil injection groove (1202) is provided with a plurality of oil injection holes (1203) at even intervals, and the oil injection holes (1203) are connected to the oil supply hole (1201).

6. The lubrication system of the elastic metal plastic tile according to claim 5, characterized in that: An oil side groove (1204) is provided on the oil outlet side of the oil spray groove (1202) along the rotation direction.

7. The lubrication system of the elastic metal plastic tile according to claim 6, characterized in that: The width of the oil edge groove (1204) is 6mm-15mm, and the depth of the oil edge groove (1204) is 0.3mm-0.5mm.

8. The lubrication system of the elastic metal plastic tile according to claim 5, characterized in that: The oil injection groove (1202) is 10mm-30mm away from the bearing surface, and the area of ​​the oil injection groove (1202) accounts for 3%-5% of the bearing area.

9. The lubrication system of the elastic metal plastic tile according to claim 1, characterized in that: During operation, the lubricating oil level is 2mm-5mm lower than the working surface of the elastic metal plastic tile.

10. The lubrication system of the elastic metal plastic tile according to any one of claims 1 to 9, characterized in that: The outer wall of the thrust oil groove (1) is provided with a cooler (8).

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