Main motor bearing bush oil return tank

Abstract

The utility model relates to mechanical lubricating system technical field discloses a main motor bearing bush oil return oil tank, include: main oil tank, auxiliary oil tank and gland, auxiliary oil tank sets up in main oil tank, and auxiliary oil tank includes first side wall, second side wall, bottom wall and filter core, first side wall is along first direction distribution, and second side wall is along second direction distribution, and first side wall, second side wall, bottom wall and the inner wall of main oil tank form the containing space between, and the oil return port of containing space is set up with the outside communication, bottom wall is opened with the oil discharge hole of oil storage space communication, and filter core is detachably installed in oil discharge hole, the top plate of main oil tank is set up the observation port, and the observation port and oil discharge hole are along third direction and set up directly opposite, and the gland is detachably covered in observation port, and the maintenance personnel is convenient through the observation port and observes the oil return oil product pollution situation and finds the bearing bush abnormal wear in time, and timely disposal replaces the bearing bush, prevents equipment operation failure, improves equipment operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical lubrication system technology, specifically to a main motor bearing oil return tank. Background Technology

[0002] Bearing-type DC motors can meet the requirements of high load-bearing capacity and impact resistance, and are suitable for harsh environments. Although magnetic levitation bearings have replaced traditional bearings in some scenarios with the development of brushless DC motors (BLDC), bearing-type motors are still irreplaceable in ultra-heavy-duty fields. Because the sliding bearing uses 84 alloy bearings, continuous oil supply is required, with lubrication, cooling, and copper powder flushing achieved through turbine oil circulation. In other words, thin oil lubrication and flushing are key equipment control points in the stable operation of the main motor. In conventional lubrication systems, because the amount of copper powder wear is minimal, the return oil pipeline generally does not have a filter device. However, during the operation of the motor bearings, wear will generate a large amount of copper shavings, metal powder, and other particles that flow directly back to the main oil tank, causing turbine oil contamination and decreased cleanliness. This necessitates frequent oil changes and tank cleaning, severely affecting the service life of the pump and filter element, and restricting production efficiency.

[0003] The existing return oil tank system cannot monitor the status of the return oil in real time. Maintenance personnel need to periodically disassemble the main motor bearings or clean the oil tank to determine the wear condition, resulting in low maintenance efficiency, high labor costs, and difficulty in timely detection of sudden abnormal wear, which can easily lead to equipment failure and downtime. Utility Model Content

[0004] The purpose of this invention is to provide a main motor bearing return oil tank to solve the problems in the background art, such as the inability to observe the status of the return oil in real time.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A main motor bearing return oil tank, comprising:

[0007] The main fuel tank has an internal fuel storage space.

[0008] An auxiliary fuel tank is disposed within the oil storage space of the main fuel tank. The auxiliary fuel tank includes a first side wall, a second side wall, a bottom wall, and a filter element. The first side wall is distributed along a first direction, and the second side wall is distributed along a second direction. The first side wall and the second side wall are connected. The bottom wall is connected to the bottom ends of the first side wall and the second side wall, and the first side wall, the second side wall, and the bottom wall are all connected to the inner wall of the main fuel tank, so that the first side wall, the second side wall, the bottom wall, and the inner wall of the main fuel tank form an accommodating space. The accommodating space has an oil return port communicating with the outside. The bottom wall has an oil drain hole communicating with the oil storage space, and the filter element is detachably installed in the oil drain hole.

[0009] A pressure cap is provided, and an observation port is opened on the top plate of the main oil tank. The observation port and the oil drain hole are directly opposite each other along a third direction. The pressure cap is detachably installed over the observation port, and the first, second, and third directions are perpendicular to each other. By setting up an auxiliary oil tank, the return oil flows into the main oil tank after being filtered by the filter element inside the auxiliary oil tank. This effectively intercepts copper and iron powder and other particles in the return oil, preventing oil contamination in the main oil tank and extending the oil change cycle and equipment life. The observation port allows maintenance personnel to easily observe the contamination of the return oil, promptly detect abnormal bearing wear, and replace the bearings in a timely manner, preventing equipment malfunctions and improving equipment reliability. An openable pressure cap is provided at the observation port to prevent foreign objects from entering and ensure system cleanliness.

[0010] Furthermore, it also includes a baffle plate, which is disposed within the receiving space of the auxiliary oil tank to divide the auxiliary oil tank into a buffer zone and a horizontal flow zone. The return oil port is located in the buffer zone, and the drain hole is located in the horizontal flow zone. The bottom of the baffle plate is connected to the bottom wall, and there is a gap between the top of the baffle plate and the top wall of the main oil tank, so that the return oil can be slowed down and settled in the buffer zone before flowing into the horizontal flow zone. The buffer zone can slow down the oil flow velocity, causing large particles carried in the return oil flow to settle. After the oil flow flows into the horizontal flow zone, the fine particles carried by the oil flow settle in the horizontal flow zone, and a small amount of particles entering the drain hole are intercepted by the filter element. The observation port is located in the horizontal flow zone, allowing maintenance personnel to observe the amount and size of copper powder deposited in the horizontal flow zone, judge the wear status of the bearing in real time, arrange maintenance in advance, and reduce downtime due to failure. The drain hole is located in the horizontal flow zone, where the particulate matter carried by the return oil is reduced, which can slow down the clogging time of the filter element and improve the service life of the filter element.

[0011] Furthermore, it also includes an overflow hole, which is located on the first or second sidewall. When the filter element becomes clogged, causing the oil level to rise, the oil flows back to the main oil tank through the overflow hole, preventing the risk of overflow.

[0012] Furthermore, it also includes an air filter. A vent hole corresponding to the accommodating space of the auxiliary fuel tank is provided on the top plate of the main fuel tank, and the air filter is detachably installed in the vent hole. By providing the vent hole, the pressure inside the auxiliary fuel tank can be balanced; by providing the air filter, dust and water vapor in the air can be prevented from entering the auxiliary fuel tank.

[0013] Furthermore, it also includes a magnetic rod. An installation hole is provided on the top plate of the main oil tank, and the magnetic rod is detachably mounted in the installation hole and extends into the receiving space of the auxiliary oil tank. The magnetic rod can attract iron powder and other substances, improving the cleanliness of the returned oil.

[0014] Furthermore, it also includes a first step block, which is disposed around the oil drain hole, and the filter element is detachably mounted on the first step block. By setting the first step block, particulate matter is prevented from entering the main oil tank along the oil drain hole when the filter element is replaced, thus ensuring the cleanliness of the main oil tank.

[0015] Furthermore, it also includes a second step block, which is disposed around the observation port, and the pressure cap is detachably disposed on the second step block. The second step block and the pressure cap cooperate to prevent foreign objects from entering.

[0016] Furthermore, the main oil tank includes a first side plate and a second side plate arranged opposite each other along a first direction, a third side plate and a fourth side plate arranged opposite each other along a second direction, and a bottom plate and a top plate arranged opposite each other along a third direction. The first side plate, the second side plate, the third side plate, the fourth side plate, the bottom plate and the top plate enclose an oil storage space. The oil return port passes through the first side plate and communicates with the receiving space of the auxiliary oil tank.

[0017] Furthermore, along a third direction, the height of the return port is higher than that of the outlet port.

[0018] Furthermore, the partition is arranged along a first direction, with a first end of the partition connected to a first side plate and a second end of the partition connected to a second side wall.

[0019] Furthermore, the partition is arranged along the second direction, with the first end of the partition connected to the third side plate and the second end of the partition connected to the first side wall.

[0020] This invention has the following advantages over the prior art:

[0021] 1. This utility model relates to a main motor bearing return oil tank, comprising a main oil tank and an auxiliary oil tank located inside the main oil tank. The auxiliary oil tank has a return oil port, and a return oil pipeline is connected to the return oil port. The return oil first enters the auxiliary oil tank and then flows into the main oil tank. An oil drain hole is provided on the bottom plate of the auxiliary oil tank, and a filter element is installed inside the drain hole. The return oil flows into the main oil tank after being filtered by the filter element. The filter element filters out contaminants such as copper powder from the return oil to protect the cleanliness of the turbine oil. An observation port is provided on the top plate of the main oil tank, directly opposite the oil drain hole, allowing maintenance personnel to easily observe the contamination of the return oil, promptly detect abnormal bearing wear, and replace the bearing in a timely manner to prevent equipment malfunctions and improve equipment reliability. An openable pressure cap is provided at the observation port to prevent foreign matter from entering and ensure system cleanliness.

[0022] 2. The main motor bearing oil return tank of this utility model has a partition inside its auxiliary oil tank, which divides the auxiliary oil tank into a buffer zone and a horizontal flow zone. The height of the partition is lower than the overall height of the auxiliary oil tank. The oil return port is located in the buffer zone, and the oil drain port is located in the horizontal flow zone. The return oil slows down its flow rate in the buffer zone, causing carried particles to settle, and then flows into the horizontal flow zone through the space above the partition. After being filtered through the oil drain port, it enters the main oil tank. An overflow hole is opened on the first or second side wall of the auxiliary oil tank. When the filter element is clogged and the oil level rises, the oil flows back to the main oil tank through the overflow hole, preventing the risk of overflow. An air filter is installed on the top of the main oil tank, which can balance the pressure inside the tank and block dust and water vapor in the air between the main and auxiliary oil tanks. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the main motor bearing oil return tank in an embodiment of the present utility model;

[0024] Figure 2 This is a top view of the main motor bearing oil return tank in an embodiment of this utility model;

[0025] In the diagram: 1. Main oil tank; 101. First side plate; 102. Third side plate; 103. Top plate; 2. Auxiliary oil tank; 201. First side wall; 202. Second side wall; 203. Bottom wall; 204. Buffer zone; 205. Horizontal flow zone; 206. Overflow hole; 3. Filter element; 4. Oil return port; 5. Pressure cap; 6. Partition plate; 7. Air filter; 8. Magnetic rod; 9. First step block; 10. Second step block; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be further discussed and described in the description of the subsequent figures.

[0030] Example 1:

[0031] like Figures 1 to 2 As shown, this utility model provides a main motor bearing oil return tank, including: a main oil tank 1, an auxiliary oil tank 2, and a pressure cap 5. The main oil tank 1 has an oil storage space inside; the auxiliary oil tank 2 is disposed within the oil storage space of the main oil tank 1, and the auxiliary oil tank 2 includes a first side wall 201, a second side wall 202, a bottom wall 203, and a filter element 3; the first side wall 201 is along a first direction ( Figure 1 The second sidewall 202 is distributed along the second direction (X direction), and the second sidewall 202 is distributed along the second direction (X direction). Figure 2 The first sidewall 201 is connected to the second sidewall 202, and the bottom wall 203 is connected to the bottom ends of the first sidewall 201 and the second sidewall 202. The first sidewall 201, the second sidewall 202, and the bottom wall 203 are all connected to the inner wall of the main oil tank 1, so that the first sidewall 201, the second sidewall 202, the bottom wall 203, and the inner wall of the main oil tank 1 form a receiving space. The receiving space has an oil return port 4 communicating with the outside. The bottom wall 203 has an oil drain hole communicating with the oil storage space, and the filter element 3 is detachably installed in the oil drain hole. An observation port is provided on the top plate 103 of the main oil tank 1, and the observation port and the oil drain hole are located along a third direction (Y direction). Figure 2 The first direction (Z direction) is directly opposite to the observation port, and the pressure cover 5 is detachably covered by the observation port. The first direction, the second direction and the third direction are perpendicular to each other.

[0032] In this embodiment, an auxiliary oil tank 2 is added inside the main oil tank 1 and installed on the inner wall of the main oil tank 1. A filter element 3 is installed in the drain hole of the auxiliary oil tank to filter and intercept copper powder and other particles in the return oil, preventing contamination of the oil in the main oil tank. An observation port is opened on the top plate of the main oil tank 1, allowing maintenance personnel to observe the amount and size of copper powder deposited in the auxiliary oil tank at any time, judge the wear status of the bearing in real time, arrange maintenance in advance, and reduce downtime due to failure. The observation port is covered by an openable pressure cap 5 to prevent foreign objects on the surface of the main oil tank from falling into the auxiliary oil tank. The size of the observation port is reasonably set according to the size of the main oil tank and the auxiliary oil tank. In addition to observing the internal condition of the auxiliary oil tank through the observation port, it also allows operators to extend cleaning devices into the auxiliary oil tank through the observation port to clean the inside of the auxiliary oil tank.

[0033] Specifically, a first stepped block 9 is provided around the oil drain hole, and the filter element 3 is detachably installed on the first stepped block 9. By providing the first stepped block 9, particulate matter is prevented from entering the main oil tank along the oil drain hole when the filter element is replaced, ensuring the cleanliness of the main oil tank. A second stepped block 10 is provided around the observation port, and the pressure cap 5 is detachably installed on the second stepped block 10. The second stepped block 10 and the pressure cap 5 cooperate to prevent foreign objects from entering and ensure system cleanliness. The height range of the first stepped block 9 and the second stepped block 10 is 5-10mm.

[0034] In this embodiment, the main oil tank 1 includes a first side plate 101 and a second side plate arranged opposite each other along a first direction, a third side plate 102 and a fourth side plate arranged opposite each other along a second direction, and a bottom plate and a top plate 103 arranged opposite each other along a third direction. The first side plate 101, second side plate, third side plate 102, fourth side plate, bottom plate, and top plate 103 enclose an oil storage space. The return oil port 4 passes through the first side plate 101 and communicates with the receiving space of the auxiliary oil tank 2. Oil outlets are provided on the remaining side plates or the bottom plate. Along the third direction, the height of the return oil port 4 is higher than that of the oil outlet. The structure of the main oil tank 1 does not involve many modifications, ensuring that the returned oil first enters the auxiliary oil tank through the return oil port 4, is filtered in the auxiliary oil tank, and then flows into the main oil tank, exiting through the oil outlet. (Reference) Figure 1 and Figure 2 The first sidewall 201 of the auxiliary oil tank 2 is distributed along the first direction and is opposite to the third sidewall 102 of the main oil tank 1. The second sidewall 202 of the auxiliary oil tank is distributed along the second direction and is opposite to the first sidewall 101 of the main oil tank 1, so that the first sidewall 101, the first sidewall 201, the second sidewall 202, the third sidewall 102 and the bottom wall 203 form an accommodating space. The oil return port 4 passes through the first sidewall 101 and communicates with the accommodating space.

[0035] The auxiliary oil tank 1 also includes a baffle 6, which is disposed within the accommodating space of the auxiliary oil tank 2 to divide the auxiliary oil tank 2 into a buffer zone 204 and a horizontal flow zone 205. The return oil port 4 is located in the buffer zone 204, and the drain hole is located in the horizontal flow zone 205. The bottom of the baffle 6 is connected to the bottom wall 203, and there is a gap between the top of the baffle 6 and the top wall of the main oil tank 1, so that the return oil can be slowed down and settled in the buffer zone 204 before flowing into the horizontal flow zone 205. The buffer zone 204 can slow down the oil flow velocity, causing large particles carried in the return oil flow to settle. After the oil flows into the horizontal flow zone 205, the fine particles carried by the oil flow settle in the horizontal flow zone 205, and a small amount of particles entering the drain hole are intercepted by the filter element 3. The observation port is located in the horizontal flow zone 205, allowing maintenance personnel to observe the amount and size of copper powder deposited in the horizontal flow zone 205, judge the wear condition of the bearing in real time, arrange maintenance in advance, and reduce downtime due to failure. The oil drain hole is located in the advection zone 205. Within this zone, the amount of particulate matter carried by the returning oil is reduced, slowing down filter element clogging and extending its lifespan. The height of the baffle 6 is approximately one-third to one-half the height of the auxiliary oil tank 1, facilitating oil flow and allowing operators to easily extend the cleaning device through the observation port and the space above the baffle into the buffer zone for cleaning. (Reference) Figure 2 In this embodiment, the partition 6 is arranged along the first direction. The first end of the partition 6 is connected to the first side plate 101, the second end of the partition 6 is connected to the second side wall 202, the bottom of the partition 6 is connected to the bottom wall 203, and a gap is reserved between the top of the partition 6 and the top plate 103 to facilitate the flow of oil.

[0036] In this embodiment, a magnetic rod 8 is also included. An installation hole is provided on the top plate of the main oil tank 1, and the magnetic rod 8 is detachably mounted in the installation hole and extends into the accommodating space of the auxiliary oil tank 2. Multiple magnetic rods 8 can be provided, located in the buffer zone 204 and the advection zone 205 respectively, capable of adsorbing iron powder and other substances, thereby improving the cleanliness of the returned oil.

[0037] refer to Figure 1 This embodiment also includes an overflow hole 206, which is formed on the first sidewall 201 or the second sidewall 202. Specifically, the overflow hole 206 can be formed on the second sidewall 2020 and located in the buffer zone 204; or it can be formed on the first sidewall 201 and located in the advection zone 205. When the filter element 3 becomes clogged, causing the oil level to rise, the oil flows back to the main oil tank through the overflow hole, preventing the risk of overflow.

[0038] It also includes an air filter 7. A vent hole is provided on the top plate 103 of the main fuel tank 1, corresponding to the accommodating space of the auxiliary fuel tank 2. The air filter 7 is detachably installed in the vent hole. By providing the vent hole, the pressure inside the auxiliary fuel tank 2 can be balanced; by providing the air filter 7, dust and water vapor in the air can be prevented from entering the auxiliary fuel tank 2.

[0039] In specific implementation: the first sidewall 201, second sidewall 202, and bottom wall 203 of the auxiliary oil tank 2 are welded together, and also welded to the inner wall of the main oil tank 1. Return oil enters the buffer zone 204 through the return port 4 to settle, then enters the advection zone 205, and flows into the main oil tank 1 after being filtered by the filter element 3. The filter element 3 can filter out copper powder and other particles in the return oil, and the magnetic rod 8 can adsorb iron powder and other substances, preventing contamination of the main oil tank. A 5mm high first step block 9 is set around the drain hole to prevent foreign objects from sliding into the main oil tank 1 during cleaning or filter element replacement. Through the filter element 3, magnetic rod 8, and partition design, copper and iron powder and other particles in the return oil are effectively intercepted, preventing contamination of the main oil tank, extending the oil change cycle and equipment life. The replaceable filter element design facilitates regular maintenance, and the partition structure simplifies the observation process, improves maintenance efficiency, and reduces labor costs.

[0040] Observation and maintenance in this embodiment: periodically open the pressure cap 5 to observe the copper powder deposition in the advection zone 205; when the filter element is clogged, replace the filter element through the observation port, clean the auxiliary oil tank, and prevent foreign objects from falling into the main oil tank through the first step block 9.

[0041] Example 2:

[0042] This embodiment is the same as embodiment 1 except for the following technical solutions:

[0043] In this embodiment, the baffle 6 is arranged along the second direction, with its first end connected to the third side plate 102 and its second end connected to the first side wall 202. The arrangement direction of the baffle 6 is determined according to the shape of the auxiliary oil tank, and it can separate the buffer zone and the scour zone, thus buffering and slowing down the oil flow.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A main motor bearing oil return tank, characterized in that, include: The main fuel tank has an internal fuel storage space. An auxiliary fuel tank is disposed within the oil storage space of the main fuel tank. The auxiliary fuel tank includes a first side wall, a second side wall, a bottom wall, and a filter element. The first side wall is distributed along a first direction, and the second side wall is distributed along a second direction. The first side wall and the second side wall are connected. The bottom wall is connected to the bottom ends of the first side wall and the second side wall, and the first side wall, the second side wall, and the bottom wall are all connected to the inner wall of the main fuel tank, so that the first side wall, the second side wall, the bottom wall, and the inner wall of the main fuel tank form an accommodating space. The accommodating space has an oil return port communicating with the outside. The bottom wall has an oil drain hole communicating with the oil storage space, and the filter element is detachably installed in the oil drain hole. The main oil tank has an observation port on its top plate. The observation port and the drain hole are directly opposite each other along a third direction. The pressure cap is detachably covered by the observation port. The first direction, the second direction and the third direction are perpendicular to each other.

2. The main motor bearing oil return tank according to claim 1, characterized in that: It also includes a baffle plate, which is disposed in the receiving space of the auxiliary oil tank to divide the auxiliary oil tank into a buffer zone and a horizontal flow zone. The return oil port is located in the buffer zone and the drain oil port is located in the horizontal flow zone. The bottom of the baffle plate is connected to the bottom wall, and there is a gap between the top of the baffle plate and the top wall of the main oil tank so that the return oil can be decelerated and settled in the buffer zone before flowing into the horizontal flow zone.

3. The main motor bearing oil return tank according to claim 1, characterized in that: It also includes an overflow hole, which is formed in the first sidewall or the second sidewall.

4. The main motor bearing oil return tank according to claim 1, characterized in that: It also includes an air filter, and the top plate of the main fuel tank has a vent hole corresponding to the accommodating space of the auxiliary fuel tank, and the air filter is detachably installed in the vent hole.

5. The main motor bearing oil return tank according to claim 1, characterized in that: It also includes a magnetic rod. The main oil tank has a mounting hole on its top plate, and the magnetic rod is detachably mounted in the mounting hole and extends into the receiving space of the auxiliary oil tank.

6. The main motor bearing oil return tank according to claim 1, characterized in that: It also includes a first step block, which is disposed around the oil drain hole, and the filter element is detachably mounted on the first step block.

7. The main motor bearing oil return tank according to claim 1, characterized in that: It also includes a second step block, which is disposed around the observation port, and the pressure cap is detachably disposed on the second step block.

8. The main motor bearing oil return tank according to claim 2, characterized in that: The main oil tank includes a first side plate and a second side plate arranged opposite each other along a first direction, a third side plate and a fourth side plate arranged opposite each other along a second direction, and a bottom plate and a top plate arranged opposite each other along a third direction. The first side plate, the second side plate, the third side plate, the fourth side plate, the bottom plate and the top plate enclose an oil storage space. The oil return port passes through the first side plate and communicates with the receiving space of the auxiliary oil tank.

9. The main motor bearing oil return tank according to claim 8, characterized in that: The partition is arranged along a first direction, with its first end connected to a first side plate and its second end connected to a second side wall.

10. The main motor bearing oil return tank according to claim 8, characterized in that: The partition is arranged along the second direction, with its first end connected to the third side plate and its second end connected to the first side wall.

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