Carbon dioxide compressor motor with automatic bearing lubrication

Abstract

The utility model discloses a bearing lubrication automatic supply's carbon dioxide compressor motor, the utility model relates to railway train air conditioner matching equipment technical field. Bearing lubrication automatic supply's carbon dioxide compressor motor including motor body and bearing, one end of motor body is connected with bearing end cover through bolt, bearing is located the inner chamber of bearing end cover, the inside of bearing end cover is provided with supply assembly, and the utility model discloses through control unit and the real -time monitoring of motor body to rotational speed sensor, when control unit monitors the rotational speed of motor body and exceeds the predetermine, starts oil supply assembly and transports lubricating oil through the delivery pipe and lubrication channel to supply assembly, then even sprays lubricating oil to the rolling body surface of bearing through supply assembly, and then can automatically lubricate bearing, avoids the inconvenience and the security hidden danger of manual operation, guarantees the sustained and stable operation of railway train refrigeration system.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioning equipment for rail trains, specifically a carbon dioxide compressor motor with automatic bearing lubrication replenishment. Background Technology

[0002] As an important mode of transportation, trains have undergone a development process from low speed to high speed. With the rapid development of my country's railway passenger transport, new centralized power supply and fully air-conditioned high-speed passenger trains will gradually replace old-type passenger trains. However, conventional refrigerants R22, R134a, and R407C used in train air conditioning are being phased out due to international treaty restrictions. Carbon dioxide air conditioning (CO2 system heat pump mode), DC1500V direct power supply air conditioning, and intelligent air conditioning systems for rail vehicles are receiving increasing attention in the field of rail transit air conditioning due to their green, energy-saving, and intelligent development. Therefore, as the core power component of rail transit air conditioning systems, carbon dioxide compressor motors need to maintain stable performance during long-term continuous operation.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: Currently, the bearing lubrication of carbon dioxide compressor motors usually relies on manual periodic replenishment. However, due to the special operating environment of rail trains, strong vibrations, and the compact installation position of the motor, manual replenishment is difficult to operate and the cycle is hard to control, posing a risk of insufficient or excessive lubrication. Therefore, we propose a carbon dioxide compressor motor with automatic bearing lubrication replenishment to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a carbon dioxide compressor motor with automatic bearing lubrication replenishment, which solves the problems of difficult manual replenishment operations and unpredictable cycles caused by the special operating environment and strong vibration of rail trains, as well as the compact installation position of the motor, which poses risks of insufficient or excessive lubrication.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a carbon dioxide compressor motor with automatic bearing lubrication replenishment, comprising a motor body and a bearing, one end of the motor body is bolted to a bearing end cover, the bearing is located in the inner cavity of the bearing end cover, a control unit and an oil supply assembly are provided on the outer wall of the motor body, a replenishment assembly is provided on the inner side of the bearing end cover, and a speed sensor is installed on the motor body near the bearing end cover;

[0006] The bearing end cover has a lubrication channel corresponding to the bearing inside. The lubrication channel is connected to the supply component. A quick connector is installed at the top of the lubrication channel. The oil supply component is sealed and connected to the quick connector through a delivery pipe.

[0007] Preferably, the oil supply assembly includes an oil storage tank, which is installed on the outer wall of the motor body. An oil drain pipe is installed on one side of the oil storage tank. A delivery pipe is connected to the oil drain pipe. A metering delivery pump is connected in series on the delivery pipe and is installed on one side of the top surface of the oil drain pipe.

[0008] Preferably, a liquid level sensor is installed inside the oil tank, and an oil inlet pipe is installed on the other side of the top surface of the oil tank, with a sealing cap threaded onto the oil inlet pipe.

[0009] Preferably, the bottom of the oil storage tank is inclined, and the oil drain pipe is located at the bottom of the inclined surface.

[0010] Preferably, the outer wall of the oil storage tank is fitted with a liquid level observation window.

[0011] Preferably, the replenishment component includes a retaining ring, which is installed on the inner side of the bearing end cover. The retaining ring fits against the bearing, and an annular oil cavity is formed inside the retaining ring. At least two oil outlet holes are formed at equal intervals on the contact surface between the retaining ring and the bearing. The lubrication channel is connected to the annular oil cavity and the plurality of oil outlet holes respectively.

[0012] Preferably, the control unit includes a protective box, and a controller is installed inside the protective box. The oil supply component and the speed sensor are both electrically connected to the controller via wires.

[0013] Beneficial effects

[0014] This invention provides a carbon dioxide compressor motor with automatic bearing lubrication replenishment. Compared with the prior art, it has the following advantages:

[0015] The carbon dioxide compressor motor with automatic bearing lubrication replenishment uses a control unit and a speed sensor to monitor the motor body in real time. When the control unit detects that the motor body speed exceeds the preset value, it starts the oil supply component to deliver lubricating oil to the replenishment component through the delivery pipe and lubrication channel. Then, the replenishment component evenly sprays the lubricating oil onto the rolling surface of the bearing, thereby automatically lubricating the bearing. This avoids the inconvenience and safety hazards of manual operation and ensures the continuous and stable operation of the rail train's refrigeration system. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall design of this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the bearing end cap structure of this utility model;

[0020] Figure 5 This is a cross-sectional schematic diagram of the oil supply component of this utility model.

[0021] In the diagram: 1. Motor body; 2. Bearing end cover; 3. Bearing; 4. Oil supply assembly; 41. Oil reservoir; 42. Oil drain pipe; 43. Metering pump; 44. Liquid level sensor; 45. Oil inlet pipe; 46. Liquid level observation window; 5. Lubrication channel; 6. Quick connector; 7. Delivery pipe; 8. Retaining ring; 9. Annular oil chamber; 10. Oil outlet; 11. Control unit. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a carbon dioxide compressor motor with automatic bearing lubrication replenishment, including a motor body 1 and a bearing 3. One end of the motor body 1 is connected to a bearing end cover 2 by bolts. The bearing 3 is located in the inner cavity of the bearing end cover 2. A control unit 11 and an oil supply component 4 are provided on the outer wall of the motor body 1. A replenishment component is provided on the inner side of the bearing end cover 2. A speed sensor is installed on the motor body 1 near the bearing end cover 2. A lubrication channel 5 corresponding to the bearing 3 is opened inside the bearing end cover 2. The lubrication channel 5 is connected to the replenishment component. A quick connector 6 is installed at the top of the lubrication channel 5. The oil supply component 4 is sealed and connected to the quick connector 6 through a delivery pipe 7.

[0024] The bearing end cover 2 can be bolted to the motor body 1, and also provides space for the lubrication channel 5. It can also be used to install and fix the speed sensor, the supply component, and the quick connector 6. Since the lubrication channel 5 is connected to the supply component, the oil supply component 4 is sealed to the quick connector 6 through the delivery pipe 7. When the motor body 1 is running, the speed sensor monitors the speed of the motor body 1 in real time and sends the monitoring data to the control unit 11. When the control unit 11 detects that the speed of the motor body 1 exceeds the preset value, it starts the oil supply component 4 to deliver lubricating oil to the supply component through the delivery pipe 7 and the lubrication channel 5. Then, the supply component evenly sprays the lubricating oil onto the rolling surface of the bearing 3, thereby automatically lubricating the bearing 3, avoiding the inconvenience and safety hazards of manual operation, and ensuring the continuous and stable operation of the rail train cooling system.

[0025] See Figure 1 , Figure 5 The oil supply assembly 4 includes an oil storage tank 41, which is installed on the outer wall of the motor body 1. An oil drain pipe 42 is installed on one side of the oil storage tank 41. A delivery pipe 7 is connected to the oil drain pipe 42. A metering delivery pump 43 is connected in series on the delivery pipe 7. The metering delivery pump 43 is installed on one side of the top surface of the oil drain pipe 42. A liquid level sensor 44 is installed in the inner cavity of the oil storage tank 41. An oil inlet pipe 45 is installed on the other side of the top surface of the oil storage tank 41. A sealing cap is threaded onto the oil inlet pipe 45.

[0026] The oil reservoir 41 in the oil supply assembly 4 can be installed on the motor body 1, and the oil drain pipe 42, the quantitative delivery pump 43, the level sensor 44, and the oil inlet pipe 45 can be installed and fixed respectively. Since the oil inlet pipe 45 is threaded with a sealing cap, the level sensor 44 can detect the remaining amount of lubricating oil in the oil reservoir 41 in real time and send the monitoring data to the control unit 11. When the oil level is lower than the preset threshold, the control unit 11 issues an alarm signal. The operator replenishes the oil reservoir 41 with lubricating oil through the oil inlet pipe 45. When the bearing 3 needs lubrication, the control unit 11 starts the quantitative delivery pump 43 to deliver the lubricating oil to the supply assembly through the delivery pipe 7 and the lubrication channel 5. Then, the supply assembly evenly sprays the lubricating oil onto the rolling surface of the bearing 3.

[0027] See Figure 2 , Figure 3 The bottom of the oil storage tank 41 is inclined, the oil drain pipe 42 is located at the bottom of the inclined surface, and the outer wall of the oil storage tank 41 is inlaid with a liquid level observation window 46.

[0028] The inclined surface at the bottom of the oil tank 41 facilitates the discharge of lubricating oil, preventing lubricating oil accumulation and effectively avoiding the accumulation of lubricating oil residue in the motor body 1. This also prevents impurities from contaminating the newly injected lubricating oil. Through the liquid level observation window 46, not only can the staff directly observe the remaining amount of lubricating oil, but the potential risk of misjudgment of lubrication due to the failure of the liquid level sensor 44 is also effectively reduced.

[0029] See Figure 1 , Figure 3 The supply component includes a retaining ring 8, which is installed on the inner side of the bearing end cover 2. The retaining ring 8 fits against the bearing 3, and an annular oil cavity 9 is provided inside the retaining ring 8. At least two oil outlet holes 10 are provided at equal intervals on the contact surface between the retaining ring 8 and the bearing 3. The lubrication channel 5 is connected to the annular oil cavity 9 and the multiple oil outlet holes 10 respectively.

[0030] The retaining ring 8 in the supply assembly can be installed on the inner side of the bearing end cover 2 and can provide opening space for the annular oil cavity 9 and the oil outlet 10 respectively. Since the lubrication channel 5 is connected to the annular oil cavity 9 and multiple oil outlets 10 respectively, the metering pump 43 in the oil supply assembly 4 delivers the lubricating oil in the oil storage tank 41 to the annular oil cavity 9 along the delivery pipe 7 and the lubrication channel 5. Under pressure, the lubricating oil is evenly sprayed onto the rolling surface of the bearing 3 through multiple oil outlets 10, thereby automatically lubricating the bearing 3.

[0031] See Figure 1 , Figure 2 The control unit 11 includes a protective box, and the controller is installed inside the protective box. The oil supply component 4 and the speed sensor are electrically connected to the controller through wires.

[0032] The controller can be installed in the protective box in the control unit 11. Since the controller is electrically connected to the oil supply assembly 4 and the speed sensor respectively, it can calculate and control the operating status of the speed sensor and the metering pump 43 and level sensor 44 in the oil supply assembly 4, and can automatically complete the lubricating oil replenishment, thereby saving labor costs.

[0033] During operation, the bearing end cover 2 can be bolted to the motor body 1, and also provides space for the lubrication channel 5. It can also be used to install and fix the speed sensor, the supply component, and the quick connector 6. Since the lubrication channel 5 is connected to the supply component, the oil supply component 4 is sealed to the quick connector 6 through the delivery pipe 7. Thus, when the motor body 1 is running, the speed sensor monitors the speed of the motor body 1 in real time and sends the monitoring data to the control unit 11. When the control unit 11 detects that the speed of the motor body 1 exceeds the preset value, it starts the oil supply component 4 to deliver lubricating oil to the supply component through the delivery pipe 7 and the lubrication channel 5. Then, the supply component evenly sprays the lubricating oil onto the rolling surface of the bearing 3, thereby automatically lubricating the bearing 3, avoiding the inconvenience and safety hazards of manual operation, and ensuring the continuous and stable operation of the rail train cooling system.

[0034] The oil reservoir 41 in the oil supply assembly 4 can be installed on the motor body 1, and the oil drain pipe 42, the quantitative delivery pump 43, the level sensor 44, and the oil inlet pipe 45 can be installed and fixed respectively. Since the oil inlet pipe 45 is threaded with a sealing cap, the level sensor 44 can detect the remaining amount of lubricating oil in the oil reservoir 41 in real time and send the monitoring data to the control unit 11. When the oil level is lower than the preset threshold, the control unit 11 issues an alarm signal. The operator replenishes the oil reservoir 41 with lubricating oil through the oil inlet pipe 45. When the bearing 3 needs lubrication, the control unit 11 starts the quantitative delivery pump 43 to deliver the lubricating oil to the supply assembly through the delivery pipe 7 and the lubrication channel 5. Then, the supply assembly evenly sprays the lubricating oil onto the rolling surface of the bearing 3.

[0035] The inclined surface at the bottom of the oil tank 41 facilitates the discharge of lubricating oil, preventing lubricating oil accumulation and effectively avoiding the accumulation of lubricating oil residue in the motor body 1. This also prevents impurities from contaminating the newly injected lubricating oil. Through the liquid level observation window 46, not only can the staff directly observe the remaining amount of lubricating oil, but the potential risk of misjudgment of lubrication due to the failure of the liquid level sensor 44 is also effectively reduced.

[0036] The retaining ring 8 in the supply assembly can be installed on the inner side of the bearing end cover 2 and can provide opening space for the annular oil cavity 9 and the oil outlet 10 respectively. Since the lubrication channel 5 is connected to the annular oil cavity 9 and multiple oil outlets 10 respectively, the metering pump 43 in the oil supply assembly 4 delivers the lubricating oil in the oil storage tank 41 to the annular oil cavity 9 along the delivery pipe 7 and the lubrication channel 5. Under pressure, the lubricating oil is evenly sprayed onto the rolling surface of the bearing 3 through multiple oil outlets 10, thereby automatically lubricating the bearing 3.

[0037] The controller can be installed in the protective box in the control unit 11. Since the controller is electrically connected to the oil supply assembly 4 and the speed sensor respectively, it can calculate and control the operating status of the speed sensor and the metering pump 43 and level sensor 44 in the oil supply assembly 4, and can automatically complete the lubricating oil replenishment, thereby saving labor costs.

[0038] In summary, the device starts the oil supply component 4 to deliver lubricating oil to the replenishment component through the delivery pipe 7 and the lubrication channel 5. Then, the replenishment component evenly sprays the lubricating oil onto the rolling surface of the bearing 3, thereby automatically lubricating the bearing 3.

[0039] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A carbon dioxide compressor motor with automatic bearing lubrication replenishment, comprising a motor body (1) and a bearing (3), wherein one end of the motor body (1) is bolted to a bearing end cover (2), and the bearing (3) is located in the inner cavity of the bearing end cover (2), characterized in that: The outer wall of the motor body (1) is provided with a control unit (11) and an oil supply component (4), the inner side of the bearing end cover (2) is provided with a supply component, and a speed sensor is installed on the motor body (1) and near the bearing end cover (2). The bearing end cap (2) has a lubrication channel (5) corresponding to the bearing (3) inside. The lubrication channel (5) is connected to the supply component. A quick connector (6) is installed at the top of the lubrication channel (5). The oil supply component (4) is sealed and connected to the quick connector (6) through the delivery pipe (7).

2. A carbon dioxide compressor motor with automatic bearing lubrication replenishment according to claim 1, characterized in that: The oil supply assembly (4) includes an oil storage tank (41), which is installed on the outer wall of the motor body (1). An oil drain pipe (42) is installed on one side of the oil storage tank (41), and the delivery pipe (7) is connected to the oil drain pipe (42). A metering pump (43) is connected in series on the delivery pipe (7), and the metering pump (43) is installed on one side of the top surface of the oil drain pipe (42).

3. A carbon dioxide compressor motor with automatic bearing lubrication replenishment according to claim 2, characterized in that: A liquid level sensor (44) is installed in the inner cavity of the oil storage tank (41), and an oil inlet pipe (45) is installed on the other side of the top surface of the oil storage tank (41). A sealing cap is threaded onto the oil inlet pipe (45).

4. A carbon dioxide compressor motor with automatic bearing lubrication replenishment according to claim 3, characterized in that: The bottom of the oil storage tank (41) is inclined, and the oil drain pipe (42) is located at the bottom of the inclined surface.

5. A carbon dioxide compressor motor with automatic bearing lubrication replenishment according to claim 4, characterized in that: The outer wall of the oil storage tank (41) is inlaid with a liquid level observation window (46).

6. A carbon dioxide compressor motor with automatic bearing lubrication replenishment according to claim 1, characterized in that: The supply assembly includes a retaining ring (8), which is installed on the inner side of the bearing end cover (2). The retaining ring (8) fits against the bearing (3), and an annular oil cavity (9) is provided inside the retaining ring (8). The retaining ring (8) and the bearing (3) have at least two oil outlet holes (10) at equal distances on their contact surfaces. The lubrication channel (5) is connected to the annular oil cavity (9) and the multiple oil outlet holes (10) respectively.

7. A carbon dioxide compressor motor with automatic bearing lubrication replenishment according to claim 1, characterized in that: The control unit (11) includes a protective box, and a controller is installed inside the protective box. The oil supply component (4) and the speed sensor are electrically connected to the controller through wires.

Images