Main bearing grease pumping and cleaning integrated device

Abstract

The invention relates to a main bearing grease pumping and cleaning integrated device which comprises a driving motor, the output end of the driving motor is connected with a first rotating shaft, the main bearing grease pumping and cleaning integrated device further comprises an old grease pumping and discharging mechanism and a cleaning mechanism, and the first rotating shaft sequentially penetrates through the old grease pumping and discharging mechanism and the cleaning mechanism. The old grease pumping and discharging mechanism is communicated with a grease pumping opening of the main shaft end cover, a grease storage tank is connected between the old grease pumping and discharging mechanism and the main shaft end cover, the cleaning mechanism is connected with a liquid storage tank, the liquid storage tank is communicated with a liquid injection opening of the main shaft end cover, and the first rotating shaft is used for driving gas in the grease storage tank to flow to the old grease pumping and discharging mechanism; a second rotating shaft further penetrates through the cleaning mechanism, the first rotating shaft and the second rotating shaft are in transmission connection through a belt wheel speed reduction assembly, and the second rotating shaft is used for driving liquid in the liquid storage tank to flow to the spindle end cover. Thus, when the driving motor works, the old grease pumping and draining mechanism and the cleaning mechanism work circularly at the same time, and the main bearing is cleaned while old grease of the main bearing is pumped and drained.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wind turbine bearing cleaning, and in particular to an integrated device for grease extraction and cleaning of a main bearing. Background Art

[0002] The main shaft of a wind turbine is a transmission component for external load input, connecting the impeller and the gearbox. Its operating state is directly affected by the real-time external variable load, and rigidly transmits the external influence to the gearbox, causing damage to the gearbox and affecting the transmission chain load transmission. The main shaft is a low-speed, heavy-loaded rotating part, and the load is completely borne by its bearings. Therefore, the working environment of the main shaft bearings is particularly complex and harsh, and its health and lubrication conditions will seriously affect the good operation of the main shaft.

[0003] After running for about 5 years, the main shafts of different models will have different degrees of roller raceway wear, pitting and peeling, and even outer ring fracture, which will cause the transmission chain to move and deflect and damage the gearbox. Grease is the key medium for lubricating the main bearings. Its cleanliness and performance status will directly affect the lubrication of the bearings. If it is not replaced and cleaned in time, it will cause different forms of bearing failure. Therefore, regular endoscopic inspection of the spindle bearings, replacement of old grease and replenishment of new grease, and deep cleaning of the bearings are particularly important to maintain stable operation of the unit.

[0004] At present, the extraction of old grease from the main bearing and the cleaning of the bearing are mainly carried out by opening the end cover of the bearing seat, manually taking out the waste grease, and then spraying the bearing with cleaning liquid for repeated flushing and wiping. This method has the problem that the end cover cannot be removed for units with limited axial space, and it is impossible to ensure that all dead corners of the bearing are completely cleaned manually. The labor intensity is high and the efficiency and reliability are low.

[0005] Based on this, equipment for extracting old grease from main bearings and cleaning bearings has appeared on the market, but the solutions adopted by various manufacturers are to connect multiple system devices to the bearing seat to achieve different functions, which is costly and requires processing multiple external connection interfaces on the bearing seat, which destroys its structure and appearance. In addition, it is difficult to eliminate the pollution of internal grease caused by processing iron chips, and the power source tower required by some equipment cannot meet the requirements. In addition, some manufacturers have designed system equipment that provides two sets of electric pumps as power sources in series in the system circuit for the two functions of grease removal and bearing cleaning, and connects to the same design volume of cleaning liquid storage tank. The old grease is discharged and the bearing is cleaned by circulating the old grease after injecting cleaning liquid to melt the old grease. Although the device has a filter, there is still a problem that the cleaning liquid is mixed with fine particles of old grease, causing secondary pollution to the main bearing. Most of the above systems have the disadvantages of complex structure, many external devices, expensive equipment cost, cumbersome installation, low cleaning efficiency or cleaning quality, and large space occupation, so their application in wind farms is still not high. Summary of the invention

[0006] The purpose of the present disclosure is to provide an integrated device for grease extraction and cleaning of a main bearing, so as to at least partially solve the problems existing in the related art.

[0007] In order to achieve the above-mentioned object, the present invention provides an integrated main bearing grease extraction and cleaning device, comprising a driving motor, wherein the output end of the driving motor is connected to a first rotating shaft, the integrated main bearing grease extraction and cleaning device also comprises an old grease extraction and drainage mechanism and a cleaning mechanism, wherein the first rotating shaft passes through the old grease extraction and drainage mechanism and the cleaning mechanism in sequence, The old fat extraction mechanism is connected to the grease extraction port of the spindle end cover, and a fat storage tank is connected between the old fat extraction mechanism and the spindle end cover, and the cleaning mechanism is connected to a liquid storage tank, and the liquid storage tank is connected to the liquid injection port of the spindle end cover. Among them, the first rotating shaft is used to drive the gas in the fat storage tank to flow to the old fat extraction mechanism, and the cleaning mechanism is also penetrated by a second rotating shaft. The first rotating shaft and the second rotating shaft are connected by a pulley reduction assembly, and the second rotating shaft is used to drive the liquid in the liquid storage tank to flow to the spindle end cover.

[0008] Optionally, the old fat extraction mechanism comprises a first pump body and a second pump body connected in series through a first pipeline, the first pump body and the second pump body both comprise a pump casing, the first rotating shaft passes through the pump casing, an eccentric wheel is sleeved at a position of the first rotating shaft located in the pump casing, and the center of the eccentric wheel does not coincide with the center of the inner cavity of the pump casing, The eccentric wheel is formed with a plurality of radially extending grooves at intervals along the circumferential direction, each of the grooves is provided with a blade, the blade is connected to the bottom wall of the groove by an elastic member, the blade is configured to always be in contact with the inner wall of the pump casing during the rotation of the eccentric wheel, an angle α is formed between the initial positions of the eccentric wheels in the first pump body and the second pump body in the circumferential direction, α satisfies 90°<α<0°, a second pipeline is connected between the side of the first pump body away from the first pipeline and the fat storage tank, and an exhaust pipe is connected to the side of the second pump body away from the first pipeline.

[0009] Optionally, α satisfies 30°<α<35°.

[0010] Optionally, two flat keys are installed on the first rotating shaft, and flat key grooves matching the flat keys are respectively formed on the two eccentric wheels.

[0011] Optionally, a gear is sleeved on the second rotating shaft, and the cleaning mechanism also includes a rack meshing with the gear, the liquid storage tank includes a liquid storage tank body and a floating plate installed in the liquid storage tank body, cleaning agent is filled between the floating plate and the bottom wall of the liquid storage tank body, the bottom end of the side wall of the liquid storage tank body is connected to the liquid filling port of the main shaft end cover through a fourth pipeline, and the rack is configured so that its end portion abuts against the top of the floating plate so that the cleaning agent can flow to the main shaft end cover through the fourth pipeline when moving downward.

[0012] Optionally, a liquid level gauge is installed on the outer side of the lower end of the liquid storage tank, the liquid level gauge has a cavity, and the bottom end of the liquid level gauge is fixed to the side wall of the liquid storage tank by a hollow first fastener, and the first fastener is configured to connect the liquid storage tank body with the cavity of the liquid level gauge.

[0013] Optionally, the pulley reduction assembly includes a first pulley mounted on the first rotating shaft, a second pulley mounted on the second rotating shaft, and a belt connected between the first pulley and the second pulley, wherein the diameter of the first pulley is smaller than the diameter of the second pulley.

[0014] Optionally, a joint is installed at the liposuction port of the spindle end cover, one side of the joint is connected to the liposuction tank through a third pipeline, and the other side of the joint is installed with a transparent window.

[0015] Optionally, the fat storage tank includes a fat storage tank body and a filter installed in the fat storage tank body, and the filter is placed below the connection between the fat storage tank and the third pipeline.

[0016] Optionally, an observation window with a cavity is installed on the outer wall of the fat storage tank body, the top of the observation window is located at the lower end of the filter, and is fixed to the side wall of the fat storage tank body by a hollow second fastener, and the second fastener is configured to connect the fat storage tank body and the cavity of the observation window.

[0017] Through the above technical solution, the device is powered by a driving motor, and the old grease extraction mechanism and the cleaning mechanism are integrated to ensure that the two system loops can be circulated at the same output speed to simultaneously realize the functions of old grease extraction and bearing cleaning of the spindle. The device has a simple structure, low cost and convenient operation. The device uses independent tanks for storing old grease and cleaning liquid, respectively, to avoid secondary contamination of the main bearing cleaning caused by the mixing and recycling of old grease and cleaning liquid, and the cleaning quality is high. In addition, the injection speed of the cleaning liquid is controlled to be lower than the extraction speed of the old grease of the spindle through the pulley reduction assembly, which can effectively avoid the slow flow of grease in the old grease extraction system and the rapid increase of pressure in the spindle end cover caused by excessive liquid injection, resulting in liquid leakage.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a structural schematic diagram of a main bearing grease extraction and cleaning integrated device provided by an exemplary embodiment of the present disclosure; Figure 2 It is a structural schematic diagram of an old grease extraction mechanism in an integrated main bearing grease extraction and cleaning device provided in an exemplary embodiment of the present disclosure; Figure 3 is a side view of an old grease extraction mechanism in a main bearing grease extraction and cleaning integrated device provided by an exemplary embodiment of the present disclosure; Figure 4 It is a schematic structural diagram of a cleaning mechanism in an integrated main bearing grease extraction and cleaning device provided in an exemplary embodiment of the present disclosure.

[0020] Description of Reference Numerals 1-driving motor; 21-first rotating shaft; 211-flat key; 22-second rotating shaft; 3-old fat extraction mechanism; 31-first pump body; 32-second pump body; 301-pump housing; 302-eccentric wheel; 303-blade; 304-elastic member; 4-cleaning mechanism; 401-gear; 402-rack; 5-spindle end cover; 51-fat extraction port; 511-connector; 52-liquid injection port; 6-fat storage tank; 61-fat storage tank body; 62-filter screen; 63-observation window; 7-liquid storage tank; 71-liquid storage tank body; 72-floating plate; 73-liquid level gauge; 81-first pulley; 82-second pulley; 83-belt; 91-first pipeline; 92-second pipeline; 93-third pipeline; 94-fourth pipeline; 95-exhaust pipe DETAILED DESCRIPTION The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0021] In the present disclosure, unless otherwise stated, the directional terms "upper", "lower", "top", and "bottom" are defined based on the directions in which the relevant components are actually used. "Inside" and "outside" refer to the contours of the corresponding components themselves. The terms "first", "second", etc. are used to distinguish different components and do not have order or importance. In the present disclosure, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0022] Reference Figures 1 to 4 The present disclosure provides an integrated device for grease extraction and cleaning of a main bearing, which may include a driving motor 1, the output end of which is connected to a first rotating shaft 21, and the integrated device for grease extraction and cleaning of the main bearing may also include an old fat extraction and drainage mechanism 3 and a cleaning mechanism 4, the first rotating shaft 21 sequentially passes through the old fat extraction and drainage mechanism 3 and the cleaning mechanism 4, wherein the old fat extraction and drainage mechanism 3 is connected to a grease extraction port 51 of a main shaft end cover 5, and a grease storage tank 6 is connected between the old fat extraction and drainage mechanism 3 and the main shaft end cover 5, and the cleaning mechanism The structure 4 is connected to a liquid storage tank 7, and the liquid storage tank 7 is communicated with the liquid injection port 52 of the spindle end cover 5, wherein the first rotating shaft 21 is used to drive the gas in the grease storage tank 6 to flow to the old grease extraction mechanism 3, and the cleaning mechanism 4 is also penetrated by a second rotating shaft 22, the first rotating shaft 21 and the second rotating shaft 22 are connected by a pulley reduction assembly, and the input speed of the first rotating shaft 21 is converted between the first rotating shaft 21 and the second rotating shaft 22 by a pulley reduction assembly, and the second rotating shaft 22 is used to drive the liquid in the liquid storage tank 7 to flow to the spindle end cover 5.

[0023] Through the above technical solution, the device is powered by a driving motor, and the old grease extraction mechanism and the cleaning mechanism are integrated to ensure that the two system loops can be circulated at the same output speed to simultaneously realize the functions of old grease extraction and bearing cleaning of the spindle. The device has a simple structure, low cost and convenient operation. The device uses independent tanks for storing old grease and cleaning liquid, respectively, to avoid secondary contamination of the main bearing cleaning caused by the mixing and recycling of old grease and cleaning liquid, and the cleaning quality is high. In addition, the injection speed of the cleaning liquid is controlled to be lower than the extraction speed of the old grease of the spindle through the pulley reduction assembly, which can effectively avoid the slow flow of grease in the old grease extraction system and the rapid increase of pressure in the spindle end cover caused by excessive liquid injection, resulting in liquid leakage.

[0024] As an exemplary embodiment of the present disclosure, refer to Figure 2 , Figure 3The old fat extraction mechanism 3 may include a first pump body 31 and a second pump body 32 connected in series through a first pipeline 91, the first pump body 31 and the second pump body 32 both include a pump casing 301, the first rotating shaft 21 passes through the pump casing 301, the first rotating shaft 21 is located in the pump casing 301 and is sleeved with an eccentric wheel 302, the center of the eccentric wheel 302 does not coincide with the center of the inner cavity of the pump casing 301, in the embodiment of the present disclosure, there is an eccentricity of 12 mm between the center of the eccentric wheel 302 and the center of the inner cavity of the pump casing 301, and the eccentric wheel 302 is formed with a plurality of radially extending grooves at intervals along the circumferential direction, specifically three grooves. A blade 303 is provided in each groove, and the blade 303 is connected to the bottom wall of the groove by an elastic member 304. The elastic member 304 can be a spring. The blade 303 can be configured to always be in contact with the inner wall of the pump casing 301 during the rotation of the eccentric wheel 302. Under the elastic force of the elastic member 304, the end of the blade 303 always keeps in contact with the inner wall of the pump casing 301. An angle α is formed between the initial positions of the eccentric wheels 302 in the first pump body 31 and the second pump body 32 in the circumferential direction, and α satisfies 90°<α<0°. The second pipeline 92 is connected between the side of the first pump body 31 away from the first pipeline 91 and the fat storage tank 6, and the side of the second pump body 32 away from the first pipeline 91 is connected to the exhaust pipe 95, and the exhaust pipe 95 is used to discharge gas to the outside. The first rotating shaft 21 drives the eccentric wheel 302 in the first pump body 31 and the second pump body 32 to rotate at the same time, and the change in the volume of the cavity formed by the blades 303 on the eccentric wheel 302 and the inner wall of the pump housing 301 causes the change in the air pressure in the cavity. After the driving motor 1 is started, it drives the first rotating shaft 21 to rotate. As the volume of the inner cavity formed by the blades 303 of the first pump body 31 and the inner wall of the pump housing 301 increases and the air pressure decreases, air is sucked in, and as the volume decreases and the air pressure increases, air is discharged. When the volume of the cavity increases, the gas in the grease storage tank 6 flows to the first pump body 31 to fill the cavity. When the volume of the cavity decreases, the gas is pressed into the second pump body 32 for the same air flow cycle. The air inside the grease storage tank 6 gradually decreases, the air pressure decreases, and a vacuum environment is formed. Based on the atmospheric pressure effect, the old grease in the main bearing will flow into the grease storage tank 6 through the second pipeline 92, thereby realizing the extraction and discharge of the old grease of the main shaft. The gas discharged from the first pump body 31 directly enters the inner cavity of the second pump body 32 and is discharged to the outside through the exhaust pipe 95 after circulation. Therefore, the gas in the fat storage tank 6 is evacuated through the cyclic operation of the old fat extraction mechanism 3. The present disclosure adopts a design of three blades 303, which increases the speed of the airflow during the exhaust process and shortens the evacuation time.

[0025] Specifically, α can satisfy 30°<α<35°. In the embodiment of the present disclosure, the initial fixed angle difference of the two eccentric wheels 302 in the pump body can be 32°, and each eccentric wheel 302 is respectively installed with three blades 303 with springs at the bottom to always keep in contact with the inner wall of the pump housing 301, ensuring that the volume change of the air outlet cavity of the first pump body 31 corresponds to the volume change of the air inlet cavity of the second pump body 32, ensuring that the gas discharged from the air outlet of the first pump body 31 can enter from the air inlet of the second pump body 32 to form an air flow path.

[0026] Further, refer to Figure 3 Two flat keys 211 can be installed on the first rotating shaft 21, and flat key grooves matching the flat keys 211 are formed on the two eccentrics 302. The initial angular position of the rotating blades 303 on the two eccentrics 302 is completely determined by the circumferential angular deviation of the two flat key grooves processed on the first rotating shaft 21, ensuring that the suction of the second pump body 32 can directly utilize the exhaust of the first pump body 31 to form a continuous gas circulation loop.

[0027] In some embodiments, reference Figure 4 , a gear 401 is sleeved on the second rotating shaft 22, and the cleaning mechanism 4 may also include a rack 402 meshed with the gear 401. The liquid storage tank 7 includes a liquid storage tank body 71 and a floating plate 72 installed in the liquid storage tank body 71. The floating plate 72 and the bottom wall of the liquid storage tank body 71 are filled with cleaning agent. The bottom end of the side wall of the liquid storage tank body 71 is connected to the liquid injection port 52 of the spindle end cover 5 through the fourth pipeline 94. The rack 402 is configured so that its end abuts against the top of the floating plate 72 so that the cleaning agent can flow to the spindle end cover 5 through the fourth pipeline 94 when moving downward. The gear rack structure converts the rotational motion of the second rotating shaft 22 into linear motion, and then squeezes the cleaning agent to achieve bearing cleaning. When the speed of the same first rotating shaft 21 remains unchanged, the first rotating shaft 21 drives the second rotating shaft 22 to rotate through the pulley reduction assembly, and the second rotating shaft 22 drives the gear 401 to rotate, thereby converting the rotational motion into the linear motion of the rack 402. The output end of the rack 402 is aligned with the floating plate 72 of the liquid storage tank 7. When the cleaning device is working, the rack 402 moves linearly downward to push the floating plate 72 to squeeze the cleaning liquid to flow to the inside of the main bearing for cleaning.

[0028] Among them, refer to Figure 1, a liquid level gauge 73 may be installed on the outer side of the lower end of the liquid storage tank 7. The liquid level gauge 73 has a cavity. The bottom end of the liquid level gauge 73 is fixed to the side wall of the liquid storage tank 7 through a hollow first fastener. The first fastener is configured to connect the liquid storage tank body 71 with the cavity of the liquid level gauge 73. Under normal conditions, the liquid level gauge 73 is filled with liquid. The first fastener is hollow inside and communicates with the inside of the liquid storage tank 7. Its position is the lowest position of the detergent storage. When the detergent is consumed to the first fastener at the lowest end, the liquid in the liquid level gauge 73 will gradually decrease. By observing that there is a small amount or no liquid in the liquid level gauge 73, it can be judged that the detergent in the liquid storage tank 7 has been consumed and needs to be added.

[0029] In some embodiments, reference Figure 4 The pulley reduction assembly may include a first pulley 81 sleeved on the first rotating shaft 21, a second pulley 82 sleeved on the second rotating shaft 22, and a belt 83 connected between the first pulley 81 and the second pulley 82, wherein the diameter of the first pulley 81 is smaller than the diameter of the second pulley 82. The diameters and center distances of the first pulley 81 and the second pulley 82 determine the reduction ratio, and through the pulley reduction assembly, the speed of the first rotating shaft 21 is reduced according to the transmission ratio and then output through the second rotating shaft 22. When the speed of the same first rotating shaft 21 remains unchanged, the first rotating shaft 21 drives the first pulley 81 to rotate, and then drives the second pulley 82 to rotate through the belt 83, and the second pulley 82 drives the second rotating shaft 22 to rotate, and the gear 401 of the second rotating shaft 22 rotates, and it meshes with the rack 402, thereby converting the rotational motion into the linear motion of the rack 402. After the driving motor 1 is started, it drives the first rotating shaft 21 to rotate. The speed of the first rotating shaft 21 is reduced through the transmission of the pulley reduction assembly and output through the second rotating shaft 22, ensuring that the working speed of the cleaning mechanism 4 is lower than that of the old grease extraction mechanism 3.

[0030] Further, refer to Figure 1 A joint 511 may be installed at the liposuction port 51 of the spindle end cover 5, one side of the joint 511 is connected to the liposuction tank 6 through the third pipeline 93, and a transparent window is installed on the other side of the joint 511. The liquid outflow state can be observed through the transparent window.

[0031] In some embodiments, reference Figure 1 The grease storage tank 6 may include a grease storage tank body 61 and a filter screen 62 installed in the grease storage tank body 61, and the filter screen 62 is placed below the connection between the grease storage tank 6 and the third pipeline 93. The filter screen 62 filters the old grease iron filings entering, and at the same time, the cleaning condition of the main bearing is judged by the change in the amount of iron filings on the filter screen 62. The grease storage tank 6 is placed on a circular cart for easy movement.

[0032] Further, refer to Figure 1The outer wall of the grease storage tank body 61 may be provided with an observation window 63 having a cavity. The top of the observation window 63 is located at the lower end of the filter screen 62 and is fixed to the side wall of the grease storage tank body 61 through a hollow second fastener. The second fastener is configured to connect the cavity of the grease storage tank body 61 and the observation window 63. The interior of the second fastener is hollow and communicates with the interior of the grease storage tank 6. Its position is the highest position for grease storage. When the grease reaches the second fastener at the uppermost end, the grease will flow into the cavity of the observation window 63 along the middle channel thereof. The grease is judged to be full by the appearance of grease in the observation window 63, and the operation is stopped. The grease storage tank 6 is hoisted down the tower to drain the grease in the tank.

[0033] Specifically, the use process of the main bearing grease extraction and cleaning integrated device is as follows: Taking into account the possibility of hardening of the grease inside the main bearing, when operating on the tower, first start the drive motor 1 at a speed of 20-30r / min to make only the cleaning mechanism 4 work, fill the cleaning liquid from the injection port 52 of the main shaft end cover 5, let the unit rotate at a low speed of 3-5r / min, and seal and soak the inside of the main bearing for 1 to 2 hours to increase the internal temperature of the bearing and dilute the hardened grease. The main bearing grease extraction and cleaning integrated device is hoisted into the engine room, and a slightly higher and flat area near the main bearing is selected on the engine room to place the device. After all system loops are connected, the cleaning agent is filled into the liquid storage tank 7, and the drive motor 1 is started to rotate, driving the first rotating shaft 21 to rotate, so that the grease extraction mechanism 3 and the cleaning mechanism 4 are operated simultaneously. During the operation of the entire system device, the unit maintains a low speed operation, so that the main shaft bearing can realize the cycle of extracting old grease while cleaning the bearing in a closed space. The working pressure is 0.6MPa. The whole process is sealed by the sealing ring on the main shaft, and the leaked liquid is collected by the oil collecting box at the lower end. By observing whether there is grease in the observation window 63 and whether there is liquid in the liquid level gauge 73, it is judged that the grease in the grease storage tank 6 is full and the cleaning agent has been consumed, and the old grease is discharged and the cleaning liquid is replenished in time, and the filter 62 is replaced according to the degree of contamination. During the reciprocating cycle of the system, observe the color and cleanliness of the liquid flowing out of the main bearing through the transparent window on the lower end joint 511 of the main shaft end cover 5, and observe the filter 62. When there is no old grease flowing out, only the circulating cleaning liquid and its color becomes clear, and there is no obvious iron filings on the filter 62, it means that the old grease has been exhausted and the bearing has been cleaned. Finally, lock the high-speed brake and impeller lock, and use an air pump to blow and dry the inside of the bearing through the liquid injection port 52.

[0034] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0036] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An integrated device for grease extraction and cleaning of main bearings, characterized in that: The main bearing grease extraction and cleaning integrated device further comprises an old grease extraction mechanism and a cleaning mechanism, and the first rotating shaft passes through the old grease extraction mechanism and the cleaning mechanism in sequence. The old fat extraction mechanism is connected to the grease extraction port of the spindle end cover, and a fat storage tank is connected between the old fat extraction mechanism and the spindle end cover, and the cleaning mechanism is connected to a liquid storage tank, and the liquid storage tank is connected to the liquid injection port of the spindle end cover. Among them, the first rotating shaft is used to drive the gas in the fat storage tank to flow to the old fat extraction mechanism, and the cleaning mechanism is also penetrated by a second rotating shaft. The first rotating shaft and the second rotating shaft are connected by a pulley reduction assembly, and the second rotating shaft is used to drive the liquid in the liquid storage tank to flow to the spindle end cover.

2. The main bearing grease extraction and cleaning integrated device according to claim 1 is characterized in that: The old fat extraction mechanism comprises a first pump body and a second pump body connected in series through a first pipeline, the first pump body and the second pump body both comprise a pump housing, the first rotating shaft passes through the pump housing, an eccentric wheel is sleeved at a position of the first rotating shaft located in the pump housing, and the center of the eccentric wheel does not coincide with the center of the inner cavity of the pump housing, The eccentric wheel is formed with a plurality of radially extending grooves at intervals along the circumferential direction, each of the grooves is provided with a blade, the blade is connected to the bottom wall of the groove by an elastic member, the blade is configured to always be in contact with the inner wall of the pump casing during the rotation of the eccentric wheel, an angle α is formed between the initial positions of the eccentric wheels in the first pump body and the second pump body in the circumferential direction, α satisfies 90°<α<0°, a second pipeline is connected between the side of the first pump body away from the first pipeline and the fat storage tank, and an exhaust pipe is connected to the side of the second pump body away from the first pipeline.

3. The main bearing grease extraction and cleaning integrated device according to claim 2 is characterized in that: α satisfies 30°<α<35°.

4. The main bearing grease extraction and cleaning integrated device according to claim 2 is characterized in that: Two flat keys are installed on the first rotating shaft, and flat key grooves matching with the flat keys are respectively formed on the two eccentric wheels.

5. The main bearing grease extraction and cleaning integrated device according to any one of claims 1 to 4, characterized in that: A gear is sleeved on the second rotating shaft, and the cleaning mechanism also includes a rack meshing with the gear. The liquid storage tank includes a liquid storage tank body and a floating plate installed in the liquid storage tank body, and cleaning agent is installed between the floating plate and the bottom wall of the liquid storage tank body. The bottom end of the side wall of the liquid storage tank body is connected to the liquid filling port of the main shaft end cover through a fourth pipeline, and the rack is configured so that its end portion abuts against the top end of the floating plate so that the cleaning agent can flow to the main shaft end cover through the fourth pipeline when moving downward.

6. The main bearing grease extraction and cleaning integrated device according to claim 5 is characterized in that: A liquid level gauge is installed on the outer side of the lower end of the liquid storage tank. The liquid level gauge has a cavity. The bottom end of the liquid level gauge is fixed to the side wall of the liquid storage tank through a hollow first fastener. The first fastener is configured to connect the liquid storage tank body with the cavity of the liquid level gauge.

7. The main bearing grease extraction and cleaning integrated device according to claim 1 is characterized in that: The pulley reduction assembly includes a first pulley sleeved on the first rotating shaft, a second pulley sleeved on the second rotating shaft, and a belt connected between the first pulley and the second pulley, wherein the diameter of the first pulley is smaller than the diameter of the second pulley.

8. The main bearing grease extraction and cleaning integrated device according to claim 1, characterized in that: A joint is installed at the liposuction port of the main shaft end cover, one side of the joint is connected with the liposuction tank through a third pipeline, and a transparent window is installed on the other side of the joint.

9. The main bearing grease extraction and cleaning integrated device according to claim 8, characterized in that: The fat storage tank comprises a fat storage tank body and a filter screen installed in the fat storage tank body, and the filter screen is placed below the connection between the fat storage tank and the third pipeline.

10. The main bearing grease extraction and cleaning integrated device according to claim 9, characterized in that: An observation window with a cavity is installed on the outer wall of the fat storage tank body. The top of the observation window is located at the lower end of the filter and is fixed to the side wall of the fat storage tank body by a hollow second fastener. The second fastener is configured to connect the fat storage tank body and the cavity of the observation window.

Images