Shield tunneling machine cutterhead driving motor cooling system

Abstract

The invention relates to the technical field of shield tunneling machines, and discloses a shield tunneling machine cutterhead driving motor cooling system which comprises a lower shell, a control panel is fixedly connected to the right side of the front portion of the lower shell, an upper shell is slidably connected to the upper side of the lower shell, and a permeable plate is fixedly connected to the interior of the lower shell. A motor body is placed on the upper side of the ventilation plate, a temperature sensor is fixedly connected to the upper side of the interior of the upper shell, connecting assemblies are fixedly connected to the four corners of the exterior of the upper shell and used for conveniently disassembling and assembling the two shells, and a bearing frame is fixedly connected to the rear side of the lower shell. And the lower side of the interior of the bearing frame is fixedly connected with a liquid storage box, and the upper side of the interior of the liquid storage box is fixedly connected with a liquid pumping pipe. Cooling liquid is driven by the circulating pump to circularly flow in the closed loop, is cooled by the refrigerator, then is subjected to efficient heat exchange with the motor through the refrigerating bent pipe, is subjected to impurity removal and then returns to the liquid storage tank to complete circulation.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine technology, specifically to a cooling system for a tunnel boring machine cutterhead drive motor. Background Technology

[0002] As the core equipment in tunnel construction, the tunnel boring machine (TBM) requires its cutterhead drive motor to output enormous torque and withstand extremely high loads during excavation. Due to the enclosed space, high ambient temperature, and high dust concentration inside the tunnel, coupled with the need for continuous and uninterrupted excavation operations, the large amount of heat generated by the motor during operation is difficult to dissipate in a timely manner. Prolonged operation under overheated conditions can lead to serious malfunctions such as insulation aging, efficiency reduction, and even burnout, directly threatening the progress and safety of the entire project. Therefore, developing a high-efficiency and reliable dedicated cooling system for the cutterhead drive motor is crucial for ensuring the continuous excavation capability of the TBM.

[0003] Currently, in the motor cooling solutions for tunnel boring machines and similar heavy machinery, existing technologies generally employ forced air cooling or open-loop water cooling. Forced air cooling systems primarily rely on fans or independent blowers mounted on the motor shaft to drive ambient airflow across the motor casing surface to remove heat. Open-loop water cooling, on the other hand, uses a pump to directly pump external water into the cooling water jacket surrounding the motor; after absorbing heat, the warm water is discharged from the system.

[0004] However, the aforementioned existing technologies have significant drawbacks. In particular, open-loop water circulation cooling systems, where the cooling medium is in direct contact with the harsh tunnel environment, make it difficult to prevent contaminants such as dust and silt from entering the cooling circuit. These impurities gradually clog the cooling water jacket, damage the pump seals, and adhere to the motor housing, forming a heat insulation layer that severely reduces heat exchange efficiency. Ultimately, this leads to insufficient motor heat dissipation and temperature runaway, failing to guarantee the operational reliability of the tunnel boring machine during long-distance, high-load tunneling. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a cooling system for the cutterhead drive motor of a tunnel boring machine (TBM), which solves the problem of overheating of the TBM cutterhead drive motor under harsh tunnel conditions due to the susceptibility to contamination and low efficiency of existing cooling technologies, thus seriously affecting equipment reliability and project progress.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cooling system for a tunnel boring machine cutterhead drive motor, comprising a lower housing, a control panel fixedly connected to the front right side of the lower housing, an upper housing slidably connected to the upper side of the lower housing, a vent plate fixedly connected inside the lower housing, a motor body placed on the upper side of the vent plate, a temperature sensor fixedly connected to the upper inside of the upper housing, connecting components fixedly connected to the four corners of the upper housing for easy disassembly and assembly of the two housings, a support frame fixedly connected to the rear side of the lower housing, a liquid storage tank fixedly connected to the lower inside of the support frame, a suction pipe fixedly connected to the upper inside of the liquid storage tank, the suction pipe fixedly connected to the input end of a circulation pump, a delivery pipe fixedly connected to the output end of the circulation pump, a cooler fixedly connected to the top end of the delivery pipe, a cooling bend fixedly connected to the output end of the cooler, a filter pipe fixedly connected to the left end of the cooling bend, a connecting pipe fixedly connected to the left end of the filter pipe, and the connecting pipe fixedly connected to the right side inside the liquid storage tank.

[0007] Preferably, the connecting assembly includes a plug plate, which is fixedly connected to the four outer corners of the upper housing. Limiting buckles are fixedly connected to the four outer corners of the lower housing. The plug plate is slidably connected inside the limiting buckles. A connecting shaft is rotatably connected inside the plug plate. A locking plate is rotatably connected to the outside of the connecting shaft. First springs are fixedly connected to both sides of the inside of the plug plate. The first springs are fixedly connected to the adjacent side of the locking plate. The locking plate is slidably connected inside the limiting buckles.

[0008] Preferably, ventilation ducts are fixedly connected to both sides of the lower part of the lower housing, a fan is fixedly connected to the upper side of the inside of the ventilation duct, a support frame is slidably connected to the lower side of the inside of the ventilation duct, a dustproof net is fixedly connected to the inside of the support frame, plug-in blocks are fixedly connected to both sides of the support frame, and grooves are provided on both sides of the inside of the ventilation duct. Disassembly and assembly components are fixedly connected to the inside of the grooves, and the disassembly and assembly components are used to facilitate the disassembly and cleaning of the dustproof net.

[0009] Preferably, the disassembly and assembly assembly includes a second spring, which is fixedly connected inside the groove. A movable plate is fixedly connected to the left end of the second spring, and a plug rod is fixedly connected to the left side of the movable plate. The plug rod is slidably connected inside the plug block.

[0010] Preferably, a filter element is fixedly connected inside the filter tube, a movable track groove is provided on the outside of the filter element, a cleaning ring is slidably connected to the outside of the filter element, and a uniformly distributed cleaning component is rotatably connected inside the cleaning ring, the cleaning component being used to automatically clean the filter element.

[0011] Preferably, the cleaning component includes a ball bearing rotatably connected inside a cleaning ring, with uniformly distributed cleaning brushes fixedly connected to both sides of the inside of the cleaning ring, the ball bearing rotatably connected inside a moving track groove, and the cleaning brushes slidably connected to the outside of the filter element.

[0012] Preferably, each of the four outer corners of the refrigeration bend is fixedly connected with a fixing buckle, and the fixing buckle is fixedly connected to the four inner corners of the lower housing.

[0013] Preferably, a filter layer is fixedly connected inside the liquid storage tank.

[0014] Preferably, a groove is provided on the opposite side of the groove, and the movable plate is slidably connected inside the groove.

[0015] Preferably, the cooler is fixedly connected to the inside left side of the lower housing, and the filter tube is fixedly connected to the inside lower side of the support frame.

[0016] Working Principle: When using this device, the control panel serves as the core of the system control. First, the circulation pump is started. After the circulation pump starts running, coolant is drawn through the suction pipe submerged in the storage tank, forming the initial power for system circulation. The coolant is pressurized by the pump and then transported to the refrigerator through the delivery pipe. Inside the refrigerator, the coolant is forcibly cooled through a heat exchange process to reach the preset operating temperature. The cooled coolant then enters the refrigeration bend tube. Because the motor generates a large amount of heat during operation, the refrigeration bend tube, through its special thermal conductivity, efficiently exchanges heat, continuously absorbing the heat generated by the motor into the coolant. The temperature of the coolant rises after absorbing heat and then enters the filter tube. Equipped with a precision filtration device, it can effectively filter out metal particles, impurities, and other contaminants carried by the coolant during circulation, maintaining the cleanliness of the coolant and preventing pipe blockage and component wear. The filtered coolant finally flows back to the storage tank through the connecting pipe, completing a complete working cycle. In the storage tank, the coolant is temporarily stored and achieves initial cooling through heat exchange with the surrounding environment. At the same time, temperature sensors installed in key parts of the motor continuously monitor the motor's operating temperature and feed the real-time temperature data back to the control panel. The control panel automatically adjusts the operating frequency of the circulation pump and the cooling power of the cooler based on the comparison between the received temperature signal and the preset temperature value, achieving precise control of the cooling intensity. After the fan is powered on, it generates negative pressure, drawing air from the tunnel environment through the air inlet of the ventilation duct. The airflow first passes through the dustproof net installed inside the support frame. This multi-layer filter can effectively intercept dust particles with a diameter greater than 50 micrometers. The filtered airflow is then driven by the fan and evenly transported along a specific flow channel of the ventilation duct to the heat dissipation surface of the motor body. By pressing the moving plates on both sides, the plug rod overcomes the preload force of the second spring and exits from the positioning hole of the plug block. After unlocking, the support frame and the dustproof net can slide smoothly out of the ventilation duct along the guide rail. After cleaning, the assembly is pushed back into the guide rail to the limit position. At this time, the plug rod automatically engages with the corresponding hole of the plug block under the restoring force of the second spring, completing the mechanical interlock. This ensures effective filtration in dusty environments and also achieves convenient maintenance operations. Solid-liquid separation is achieved through a filter element with a multi-layer gradient filtration structure, which effectively filters impurities. As the filtration process continues, the trapped impurities gradually form a filter cake layer on the surface of the filter element, causing the hydraulic pressure difference between the upstream and downstream sides of the filter element to rise continuously. Driven by the pressure difference, the cleaning ring begins to move axially along the moving track. The spiral channel design of the moving track converts the linear motion of the cleaning ring into rotational forward motion. During the movement, the balls embedded in the cleaning ring roll along the moving track, converting sliding friction into rolling friction. The cleaning brushes fixed to the inner wall of the cleaning ring move accordingly, effectively removing impurities adhering to the surface of the filter media through the dual action of scraping and sweeping. The removed impurities enter the bottom collection tank along a specific flow channel under the action of fluid flushing, and are discharged from the system through a periodic drain valve. After the surface of the filter element is cleaned, the cleaning ring returns to its initial position, ready to enter the next cleaning cycle, effectively avoiding the performance degradation of the cooling system caused by filter clogging.

[0017] This invention provides a cooling system for the cutterhead drive motor of a tunnel boring machine. It has the following beneficial effects: 1. This invention uses a circulating pump to drive the coolant to circulate in a closed loop. After being cooled by a cooler, the coolant undergoes efficient heat exchange with the motor through a cooling bend. After impurities are removed, the coolant returns to the storage tank to complete the circulation. A temperature sensor monitors and provides feedback signals in real time, and the control panel automatically adjusts the system operating parameters accordingly. This maintains the motor at a constant temperature, effectively preventing overheating and avoiding external contaminants from entering the cooling circuit, thus ensuring the reliability of the tunnel boring machine for long-term continuous tunneling.

[0018] 2. This invention uses a fan to drive airflow, which is filtered through a dust filter and then forced to convect and cool the motor. The quick-release mechanism allows for convenient cleaning and resetting of the dust filter, significantly improving maintenance efficiency while ensuring efficient filtration and providing continuous and stable auxiliary cooling for the motor.

[0019] 3. This invention filters the coolant through a filter element. When impurities accumulate and cause the pressure difference to increase, the cleaning ring is driven to move along the moving track groove. The friction is reduced by the use of ball bearings, and the impurities on the surface of the filter element are automatically removed by the cleaning brush. This realizes the self-cleaning function of the filter element, effectively prevents the filter element from clogging, and ensures the continuous and stable operation of the cooling system. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a cross-sectional view of the housing of the present invention; Figure 4 This is a schematic diagram of the disassembled structure of the present invention; Figure 5 This is a cross-sectional view of the plug-in plate of the present invention; Figure 6 This is a schematic diagram of the refrigeration component structure of the present invention; Figure 7 This is a partial structural breakdown diagram of the present invention; Figure 8 This is a cross-sectional view of the ventilation duct of the present invention; Figure 9 This is a cross-sectional view of the filter tube of the present invention; Figure 10 This is a schematic diagram of the cleaning ring structure of the present invention.

[0021] The components are as follows: 1. Lower housing; 2. Control panel; 3. Upper housing; 4. Ventilation plate; 5. Motor body; 6. Temperature sensor; 7. Connecting plate; 8. Limiting buckle; 9. Connecting shaft; 10. Clamping plate; 11. First spring; 12. Bearing frame; 13. Liquid storage tank; 14. Liquid extraction pipe; 15. Circulation pump; 16. Infusion pipe; 17. Refrigerator; 18. Refrigeration bend; 19. Filter pipe; 20. Connecting pipe; 21. Fixing buckle; 22. Filter layer; 23. Ventilation duct; 24. Fan; 25. Support frame; 26. Connecting block; 27. Groove; 28. Second spring; 29. ​​Moving plate; 30. Slide groove; 31. Connecting rod; 32. Filter element; 33. Moving rail groove; 34. Cleaning ring; 35. Ball bearing; 36. Cleaning brush; 37. Dustproof net. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example: Please see the appendix Figure 1 -Appendix Figure 6 This invention provides a cooling system for a tunnel boring machine cutterhead drive motor, including a lower housing 1. A control panel 2 is fixedly connected to the front right side of the lower housing 1. An upper housing 3 is slidably connected to the upper side of the lower housing 1. A ventilator 4 is fixedly connected inside the lower housing 1, and a motor body 5 is placed on the upper side of the ventilator 4. A temperature sensor 6 is fixedly connected to the upper side of the upper housing 3. Connecting components are fixedly connected to the four corners of the upper housing 3 to facilitate the disassembly and assembly of the two housings. A support frame 12 is fixedly connected to the rear side of the lower housing 1. A liquid storage tank 13 is fixedly connected to the lower side of the support frame 12. A suction pipe 14 is fixedly connected to the upper side of the liquid storage tank 13. The suction pipe 14 is fixedly connected to the input end of a circulation pump 15. A delivery pipe 16 is fixedly connected to the output end of the circulation pump 15. A cooler 17 is fixedly connected to the top end of pipe 16. A cooler bend 18 is fixedly connected to the output end of cooler 17. A filter pipe 19 is fixedly connected to the left end of cooler bend 18. A connecting pipe 20 is fixedly connected to the left end of filter pipe 19. The connecting pipe 20 is fixedly connected to the inside right side of liquid storage tank 13. The connecting assembly includes a plug plate 7. The plug plate 7 is fixedly connected to the four outer corners of the upper housing 3. Limiting buckles 8 are fixedly connected to the four outer corners of the lower housing 1. The plug plate 7 is slidably connected to the inside of the limiting buckles 8. A connecting shaft 9 is rotatably connected to the inside of the plug plate 7. A locking plate 10 is rotatably connected to the outside of the connecting shaft 9. A first spring 11 is fixedly connected to both sides of the inside of the plug plate 7. The first spring 11 is fixedly connected to the side of the locking plate 10 that is close to it. The locking plate 10 is slidably connected to the inside of the limiting buckles 8.

[0024] When using this device, the control panel 2 serves as the system control core. First, the circulation pump 15 is started. After the circulation pump 15 starts running, it draws coolant through the extraction pipe 14, which is submerged in the liquid storage tank 13, forming the initial power for system circulation. The coolant, after being pressurized by the pump, is transported to the cooler 17 through the delivery pipe 16. Inside the cooler 17, the coolant is forcibly cooled through a heat exchange process to reach the preset operating temperature. The cooled coolant then enters the cooling bend 18. Since the motor generates a large amount of heat during operation, the cooling bend 18, through its special thermal conductivity, efficiently performs heat exchange, continuously absorbing the heat generated by the motor into the coolant. The coolant temperature rises after absorbing heat and then enters the filter pipe 19. The filter pipe 19 is equipped with a precision filter that effectively removes metal particles, impurities, and other contaminants carried by the coolant during circulation, maintaining the cleanliness of the coolant and preventing pipeline damage. After clogging and component wear, the filtered coolant flows back to the storage tank 13 through the connecting pipe 20, completing a full working cycle. In the storage tank 13, the coolant is temporarily stored and undergoes initial cooling through heat exchange with the surrounding environment, preparing for the next cycle. At the same time, the temperature sensor 6 installed in the key parts of the motor continuously monitors the motor's operating temperature and feeds the real-time temperature data back to the control panel 2. The control panel 2 automatically adjusts the operating frequency of the circulating pump 15 and the cooling power of the cooler 17 based on the comparison between the received temperature signal and the preset temperature value, achieving precise control of the cooling intensity. The closed-loop cooling system ensures that the heat generated by the motor is continuously carried away and dissipated, keeping the motor within the optimal operating temperature range. This ensures the reliable operation of the tunnel boring machine during long-term continuous tunneling and also prevents external dust and impurities from entering the cooling circuit, ensuring the long-term stable operation of the system.

[0025] Please see the appendix Figure 1 Appendix Figure 7 Appendix Figure 8 Ventilation ducts 23 are fixedly connected to both sides of the lower part of the lower housing 1. A fan 24 is fixedly connected to the upper side of the interior of the ventilation duct 23. A support frame 25 is slidably connected to the lower side of the interior of the ventilation duct 23. A dustproof net 37 is fixedly connected to the interior of the support frame 25. Insertion blocks 26 are fixedly connected to both sides of the support frame 25. Grooves 27 are provided on both sides of the interior of the ventilation duct 23. A disassembly and assembly component is fixedly connected to the interior of the groove 27. The disassembly and assembly component is used to facilitate the disassembly and cleaning of the dustproof net 37. The disassembly and assembly component includes a second spring 28, which is fixedly connected to the interior of the groove 27. A movable plate 29 is fixedly connected to the left end of the second spring 28. An insertion rod 31 is fixedly connected to the left side of the movable plate 29. The insertion rod 31 is slidably connected to the interior of the insertion block 26.

[0026] When using this device, the blower 24 generates negative pressure after being powered on, drawing air from the tunnel environment through the air inlet of the ventilation duct 23. The airflow first passes through the dustproof net 37 installed inside the support frame 25. This multi-layer filter can effectively intercept dust particles with a diameter greater than 50 micrometers, ensuring the cleanliness of the air entering the system. Driven by the blower 24, the filtered airflow is evenly transported along a specific flow channel of the ventilation duct 23 to the heat dissipation surface of the motor body 5. Through forced convection heat exchange, the airflow continuously removes the heat generated during motor operation, forming complementary heat dissipation with the main liquid cooling system. When dust accumulates on the surface of the dustproof net 37, affecting ventilation efficiency, pressing the movable plates 29 on both sides causes the plug rod 31 to overcome the second spring. The preload of 28 is released from the positioning hole of the plug-in block 26. After the lock is released, the support frame 25, together with the dustproof net 37, can slide smoothly out of the ventilation duct 23 along the guide rail. After cleaning, the assembly is pushed back into the guide rail to the limit position. At this time, the plug-in rod 31 automatically engages with the corresponding hole of the plug-in block 26 under the restoring force of the second spring 28, and completes the mechanical interlock. Through the cooperation of the dustproof net 37 and the quick disassembly and assembly mechanism, the effective filtration function in the dusty environment is ensured, and the convenience of maintenance operation is realized. The directional airflow design of the ventilation duct 23, together with the forced ventilation of the fan 24, constructs a stable air circulation path, enabling the system to continuously provide auxiliary cooling function under the harsh working conditions of the tunnel boring machine.

[0027] Please see the appendix Figure 6 Appendix Figure 9 Appendix Figure 10 A filter element 32 is fixedly connected inside the filter tube 19. A movable track groove 33 is opened on the outside of the filter element 32. A cleaning ring 34 is slidably connected to the outside of the filter element 32. A uniformly distributed cleaning component is rotatably connected inside the cleaning ring 34. The cleaning component is used to automatically clean the filter element 32. The cleaning component includes a ball bearing 35, which is rotatably connected inside the cleaning ring 34. A uniformly distributed cleaning brush 36 is fixedly connected to both sides inside the cleaning ring 34. The ball bearing 35 is rotatably connected inside the movable track groove 33, and the cleaning brush 36 is slidably connected to the outside of the filter element 32.

[0028] When using this device, when the coolant carries solid impurities such as metal shavings and sealing material fragments into the filter tube 19, it first undergoes solid-liquid separation through the filter element 32. The filter element 32 adopts a multi-layer gradient filtration structure, which can effectively filter impurities. As the filtration process continues, the trapped impurities gradually form a filter cake layer on the surface of the filter element 32, causing the hydraulic pressure difference between the upstream and downstream of the filter element 32 to continuously increase. Driven by the pressure difference, the cleaning ring 34 begins to move axially along the moving track 33. The spiral channel design of the moving track 33 converts the linear motion of the cleaning ring 34 into rotational forward motion, ensuring thorough cleaning coverage. In the process, the ball bearings 35 embedded in the cleaning ring 34 roll along the moving track groove 33, converting sliding friction into rolling friction. The cleaning brush 36 fixed to the inner wall of the cleaning ring 34 moves accordingly, and its special nylon bristles contact the surface of the filter element 32 at a specific angle. Through the dual action of scraping and sweeping, it effectively removes impurities attached to the surface of the filter material. The removed impurities enter the bottom collection tank along a specific flow channel under the action of fluid flushing, and are discharged from the system through a periodic drain valve. When the surface of the filter element 32 is cleaned, the cleaning ring 34 returns to the initial position, ready to enter the next cleaning cycle, effectively avoiding the performance degradation of the cooling system caused by filter clogging.

[0029] Please see the appendix Figure 3 Appendix Figure 6 Appendix Figure 7 The four outer corners of the refrigeration bend 18 are fixedly connected with fixing buckles 21, which are fixedly connected to the four inner corners of the lower housing 1; the inside of the liquid storage tank 13 is fixedly connected with a filter layer 22; a sliding groove 30 is opened on the opposite side of the groove 27, and the moving plate 29 is slidably connected inside the sliding groove 30; the cooler 17 is fixedly connected to the inside left side of the lower housing 1, and the filter tube 19 is fixedly connected to the inside lower side of the support frame 12.

[0030] The cooling bend 18 is fixedly connected to the four outer corners of the refrigeration bend 18 by fixing buckles 21, and also firmly connected to the four inner corners of the lower housing 1. This securely fixes the cooling bend 18 inside the lower housing 1, ensuring stable contact between the cooling bend 18 and the heat dissipation surface of the motor body 5. This effectively prevents pipe displacement or loosening caused by equipment vibration, ensuring heat transfer stability during long-term operation. The filter layer 22 is fixedly connected to the inside of the liquid storage tank 13. It is made of activated carbon and resin composite filter material and is used to purify the coolant returning to the liquid storage tank 13 in both directions. This adsorbs oily substances and acidic components dissolved in the coolant, maintains the stability of the coolant's chemical properties, slows down its deterioration process, and avoids corrosion damage to the circulating pump 15 and the pipeline. The sliding groove 30 is opened on the opposite side of the groove 27. Its channel is precision machined and forms a sliding fit with the moving plate 29, which is used for the movement of the plate. The linear movement of plate 29 provides precise guidance, thus limiting the movement of plate 29 to only the horizontal direction, preventing it from deflecting or getting stuck during pressing, and ensuring the smoothness and reliability of the component assembly and disassembly process; the cooler 17 is fixedly connected to the inside left side of the lower housing 1, and its compact structure makes full use of the internal space of the equipment to achieve centralized cooling of the circulating coolant, thereby building an independent and efficient refrigeration unit, shortening the path of the coolant from the refrigeration output to the motor part, and improving the cooling response speed of the system; the filter tube 19 is fixedly connected to the inside lower side of the support frame 12, and its installation position is lower than the return port of the liquid storage tank 13, which is used to accommodate and support the filter element 32 and its self-cleaning components, thereby ensuring that the coolant returning from the refrigeration bend 18 can be fully filtered and purified, and its low position makes it easy for impurities to be deposited in the sludge collection tank under the action of gravity, optimizing the sludge discharge effect.

[0031] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling system for a shield tunneling machine cutterhead drive motor, comprising a lower housing (1), characterized in that, A control panel (2) is fixedly connected to the front right side of the lower housing (1). An upper housing (3) is slidably connected to the upper side of the lower housing (1). A vent plate (4) is fixedly connected inside the lower housing (1). A motor body (5) is placed on the upper side of the vent plate (4). A temperature sensor (6) is fixedly connected to the upper side of the inner part of the upper housing (3). Connecting components are fixedly connected to the four corners of the outer part of the upper housing (3). The connecting components are used to facilitate the disassembly and assembly of the two housings. A support frame (12) is fixedly connected to the rear side of the lower housing (1). A liquid storage tank is fixedly connected to the lower side of the inner part of the support frame (12). 13) A liquid extraction pipe (14) is fixedly connected to the upper inside of the liquid storage tank (13). The liquid extraction pipe (14) is fixedly connected to the input end of the circulation pump (15). The output end of the circulation pump (15) is fixedly connected to the delivery pipe (16). The top end of the delivery pipe (16) is fixedly connected to the cooler (17). The output end of the cooler (17) is fixedly connected to the cooling bend pipe (18). The left end of the cooling bend pipe (18) is fixedly connected to the filter pipe (19). The left end of the filter pipe (19) is fixedly connected to the connecting pipe (20). The connecting pipe (20) is fixedly connected to the right side inside the liquid storage tank (13).

2. The shield machine cutterhead drive motor cooling system according to claim 1, characterized in that, The connecting assembly includes a plug plate (7), which is fixedly connected to the four outer corners of the upper housing (3). Limiting buckles (8) are fixedly connected to the four outer corners of the lower housing (1). The plug plate (7) is slidably connected inside the limiting buckles (8). A connecting shaft (9) is rotatably connected inside the plug plate (7). A locking plate (10) is rotatably connected to the outside of the connecting shaft (9). A first spring (11) is fixedly connected to both sides inside the plug plate (7). The first spring (11) is fixedly connected to the side of the locking plate (10) that is close to it. The locking plate (10) is slidably connected inside the limiting buckles (8).

3. The shield machine cutterhead drive motor cooling system according to claim 1, characterized in that, Ventilation ducts (23) are fixedly connected to both sides of the lower part of the lower housing (1). A fan (24) is fixedly connected to the upper side of the interior of the ventilation duct (23). A support frame (25) is slidably connected to the lower side of the interior of the ventilation duct (23). A dustproof net (37) is fixedly connected to the interior of the support frame (25). Insertion blocks (26) are fixedly connected to both sides of the support frame (25). Grooves (27) are provided on both sides of the interior of the ventilation duct (23). A disassembly and assembly component is fixedly connected to the interior of the groove (27). The disassembly and assembly component is used to facilitate the disassembly and cleaning of the dustproof net (37).

4. The shield machine cutterhead drive motor cooling system according to claim 3, characterized in that, The disassembly assembly includes a second spring (28), which is fixedly connected inside the groove (27). A movable plate (29) is fixedly connected to the left end of the second spring (28), and a plug rod (31) is fixedly connected to the left side of the movable plate (29). The plug rod (31) is slidably connected inside the plug block (26).

5. A cooling system for the cutterhead drive motor of a tunnel boring machine according to claim 1, characterized in that, The filter tube (19) is fixedly connected to a filter element (32), and a movable track groove (33) is opened on the outside of the filter element (32). A cleaning ring (34) is slidably connected to the outside of the filter element (32). A uniformly distributed cleaning component is rotatably connected inside the cleaning ring (34). The cleaning component is used to automatically clean the filter element (32).

6. A cooling system for the cutterhead drive motor of a tunnel boring machine according to claim 5, characterized in that, The cleaning assembly includes a ball bearing (35) which is rotatably connected inside a cleaning ring (34). Cleaning brushes (36) are fixedly connected to both sides of the inside of the cleaning ring (34). The ball bearing (35) is rotatably connected inside a moving track (33). The cleaning brushes (36) are slidably connected to the outside of a filter element (32).

7. A cooling system for the cutterhead drive motor of a tunnel boring machine according to claim 1, characterized in that, The four outer corners of the refrigeration bend (18) are fixedly connected with fixing buckles (21), and the fixing buckles (21) are fixedly connected to the four inner corners of the lower housing (1).

8. A cooling system for the cutterhead drive motor of a tunnel boring machine according to claim 1, characterized in that, A filter layer (22) is fixedly connected inside the liquid storage tank (13).

9. A cooling system for the cutterhead drive motor of a tunnel boring machine according to claim 4, characterized in that, A groove (30) is provided on the opposite side of the groove (27), and the movable plate (29) is slidably connected inside the groove (30).

10. A cooling system for the cutterhead drive motor of a tunnel boring machine according to claim 1, characterized in that, The cooler (17) is fixedly connected to the inside left side of the lower housing (1), and the filter tube (19) is fixedly connected to the inside lower side of the support frame (12).

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