A permanent magnet synchronous motor monorail hoist hydraulic control system

Abstract

The application relates to the field of hydraulic control systems, and particularly discloses a single-rail hoist hydraulic control system of a permanent magnet synchronous motor, which comprises a hydraulic control device, the outer surface of the hydraulic control device is provided with a hydraulic oil cylinder, the outer surface of the hydraulic oil cylinder is fixedly provided with an extension assembly, the lower surface of the hydraulic oil cylinder is movably provided with a debris collecting mechanism, the inside of the hydraulic oil cylinder is rotatably provided with a heat conduction assembly, the inside of the hydraulic oil cylinder is provided with a hydraulic oil flow chamber, the inside of the hydraulic control device is rotatably provided with a traction assembly, the inside of the hydraulic control device is rotatably provided with a cleaning mechanism, and one end of the hydraulic oil cylinder is provided with a heat channel, so that the rapid heat conduction after heat deposition of the equipment under long-time operation can be realized, the aging of internal parts and lines caused by overheating can be prevented, and the use quality and work efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic control systems, and specifically discloses a hydraulic control system for a permanent magnet synchronous motor monorail crane. Background Technology

[0002] A monorail crane is a system that uses a specially made I-beam suspended above a tunnel as a track. Various types of lifting vehicles are connected together to form a train set, which is pulled along the track by traction equipment. The traction power can be provided by wire rope, permanent magnet motor, diesel engine, battery or pneumatic device. The hydraulic control system is an essential device to ensure the normal operation of the permanent magnet synchronous motor monorail crane and is of great significance to the normal operation of the monorail crane.

[0003] Hydraulic oil plays a crucial role in the hydraulic control system. However, existing monorail hydraulic control systems have several problems. Because hydraulic oil contains a small amount of water and inevitably comes into contact with air, during emergency braking of the monorail, a large amount of hydraulic oil needs to be pumped through the system in a short time to pressurize the overspeed clamping device and achieve braking. Therefore, under high pressure and high temperature operating conditions, the hydraulic oil undergoes oxidation and hydrolysis due to increased humidity, generating corrosive substances. These harmful substances clog the filter, reducing the filtration function of the control system, shortening the service life of the hydraulic oil, and increasing the operational risk of the hydraulic control system in the long run. Furthermore, the metal surfaces of hydraulic components will rust and corrode. The particles from rust and corrosion circulate in the hydraulic system, causing wear on moving surfaces and leading to malfunctions in the hydraulic control system. Under normal operating conditions, the normal temperature of the working medium in the hydraulic system is ≤60℃, and the maximum temperature of the hydraulic oil is ≤70℃. Traditional hydraulic control systems have poor heat dissipation when operating under high temperature conditions. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a hydraulic control system for a permanent magnet synchronous motor monorail crane. This system solves the problem that, due to the presence of a small amount of water in the hydraulic oil, which inevitably comes into contact with air, a large amount of hydraulic oil needs to be supplied with pressure to the overspeed clamping device in a short time during emergency braking of the monorail crane. Under high pressure and high temperature operating conditions, the hydraulic oil undergoes oxidation and hydrolysis due to increased humidity, resulting in the formation of corrosive substances. These harmful substances clog the filter device, reducing the filtration function of the control system, shortening the service life of the hydraulic oil, and increasing the operational risk of the hydraulic control system in the long run. Furthermore, the metal surfaces of hydraulic components will rust and corrode. The particles generated by rust and corrosion circulate in the hydraulic system, causing wear on moving surfaces and leading to malfunctions in the hydraulic control system.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] The technical solution adopted by this invention to solve its technical problem is: a hydraulic control system for a permanent magnet synchronous motor monorail crane, including a hydraulic control device, a hydraulic cylinder mounted on the outer surface of the hydraulic control device, a telescopic component fixedly mounted on the outer surface of the hydraulic cylinder, a debris collection mechanism movably disposed on the lower surface of the hydraulic cylinder, a heat conduction component rotatably mounted inside the hydraulic cylinder, a hydraulic oil flow chamber disposed inside the hydraulic cylinder, a traction component rotatably mounted inside the hydraulic cylinder, a cleaning mechanism rotatably mounted inside the hydraulic cylinder, and a first fan corresponding to the hydraulic cylinder fixedly mounted on the upper surface of the hydraulic control device.

[0007] Preferably, an input oil pipe is inserted and connected to the upper surface of the hydraulic cylinder, an output oil pipe is inserted and connected to the lower surface of the hydraulic cylinder, a booster pump is installed on the upper surface of the hydraulic control equipment, and the input oil pipe is connected to the booster pump.

[0008] Preferably, the telescopic assembly includes a mounting plate fixedly installed on the outer surface of the hydraulic cylinder, and a hydraulic push rod installed between the mounting plates. The extended end of the hydraulic push rod is fixedly connected to a V-shaped strip plate. T-shaped limit posts are fixedly installed at both ends of the hydraulic cylinder. Limit plates are movably fitted on the outer surface of the T-shaped limit posts. One end of the limit plate has a limit opening that movably cooperates with the T-shaped limit post. Short rods are fixedly connected between the two limit plates. The V-shaped strip plate is fixedly connected to the limit plate.

[0009] Preferably, the debris collection mechanism includes a collection box interspersed with a hydraulic cylinder and a collection container fixedly connected to one end of the collection box. The collection container has a collection port on its inner side, and a plurality of diversion mesh plates are provided at one end of the collection container. A self-closing door is rotatably connected to one end of the collection container, and two short rods are fixedly connected to both ends of the collection container.

[0010] Preferably, the hydraulic cylinder is provided with partition support plates symmetrically arranged on its inner side, and a fixed track is provided between the two partition support plates. A sealing rotating sleeve is slidably arranged on the inner side of the fixed track.

[0011] Preferably, the heat-conducting assembly includes an annular plate fixedly connected between two sealing sleeves, and sealing ports equidistantly opened on the outer surface of the annular plate, with a heat-conducting plate inserted through the inner side of the sealing ports.

[0012] Preferably, the traction assembly includes an annular groove formed on the upper side of the partition support plate and a plurality of movable blocks slidably disposed inside the annular groove. An annular plate is fixedly connected to the two sealing sleeves on opposite sides. A plurality of traction blades are connected to the annular plate and the movable block on the opposite side of the two sleeves.

[0013] Preferably, the cleaning mechanism includes a connecting bent plate symmetrically fixedly connected to one end of the moving block, and a telescopic shovel plate fixedly connected to one end of the connecting bent plate, with an arc-shaped scraper connected to the upper ends of the connecting bent plates on both sides.

[0014] Preferably, one end of the hydraulic cylinder is provided with a heat channel, and a second fan is rotatably installed in the middle of the heat channel.

[0015] Preferably, one end of the heat-conducting plate is located in the hydraulic oil flow chamber and the other end is located in the heat channel. The heat-conducting plates are distributed obliquely and equidistantly. The material of the heat-conducting plate is artificial diamond.

[0016] The beneficial effects of this invention are:

[0017] (1) The hydraulic control system for a permanent magnet synchronous motor monorail crane described in this invention transmits temperature signals to an external controller via a temperature sensor in the hydraulic control equipment. When the temperature is too high after use, the external controller controls the booster pump to operate. The booster pump introduces hydraulic oil from the input oil pipe into the hydraulic oil flow chamber. The input hydraulic oil directly impacts the traction blades in the hydraulic oil flow chamber. The hydraulic oil flows rapidly in the hydraulic oil flow chamber, and the traction blades, pushed by the hydraulic oil, drive the moving block to slide in a ring groove. When the traction blades move, they drive the ring plate to move, and the ring plate, after moving, drives the moving block to slide in a ring groove. The rotating sealing sleeve slides within the fixed track. Its rotation, in turn, drives the ring plate to rotate. Under high pressure and high temperature operating conditions, the hydraulic oil undergoes oxidation and hydrolysis due to increased humidity, generating corrosive substances within the oil. The rotation of the ring plate drives multiple heat-conducting plates in a circular motion. Through the force of this circular motion, the heat deposited in the heat channels is continuously moved, thus moving the heat generated within the equipment. The heat-conducting plates come into contact with the heat and transfer it to the other end, where it is then impacted and carried away by the hydraulic oil. This process repeats, ensuring full contact between the heat-conducting plates and the heat, preventing heat deposition and improving heat transfer efficiency.

[0018] (2) The hydraulic control system of a permanent magnet synchronous motor monorail crane described in this invention drives the telescopic shovel to continuously scrape the inner wall of the hydraulic cylinder after the connecting bending plate moves. When the telescopic shovel moves, it drives the arc-shaped scraper to scrape the inner wall of the hydraulic cylinder. When the arc-shaped scraper rotates to one end of the collection box, it is blocked by the collection box, which causes the arc-shaped scraper to push the telescopic shovel to move. Under the movement of the arc-shaped scraper and the telescopic shovel, the corrosive substances adsorbed on the inner wall of the hydraulic cylinder are scraped off. The scraped-off substances flow with the hydraulic oil. When the hydraulic oil and corrosive substances pass through the collection box, the hydraulic oil continues to flow from the diversion mesh plate, while the corrosive substances are trapped in the collection box and discharged from the collection port into the collection box. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the external structure of the hydraulic cylinder of the present invention;

[0022] Figure 3 This is a cross-sectional view of the internal structure of the hydraulic cylinder of the present invention from another perspective;

[0023] Figure 4 This is a schematic diagram of the telescopic component, heat-conducting component, and cleaning mechanism or traction component of the present invention.

[0024] Figure 5 This is a schematic diagram of the hydraulic cylinder of the present invention from another perspective (half-section).

[0025] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 For the present invention Figure 3 Enlarged structural diagram at point B;

[0027] Figure 8 For the present invention Figure 5 Enlarged structural diagram at point C.

[0028] In the picture:

[0029] 100. Telescopic assembly; 200. Debris collection mechanism; 300. Heat conduction assembly; 400. Cleaning mechanism; 500. Traction assembly;

[0030] 1. Hydraulic control equipment; 2. Hydraulic cylinder; 3. Collection box; 4. Hydraulic push rod; 5. Input oil pipe; 6. V-shaped strip; 7. Limit opening; 9. Self-closing door; 10. Short rod; 11. Limit plate; 12. T-shaped limit post; 13. Heat-conducting plate; 14. Output oil pipe; 15. Arc-shaped scraper; 17. Annular plate; 18. Annular groove; 19. Telescopic shovel; 20. Connecting bend plate; 21. Moving block; 22. Traction blade; 23. Annular plate; 24. Collection box; 25. Diverting mesh plate; 26. Hydraulic oil flow chamber; 27. Sealing rotating sleeve; 28. Fixed track; 29. ​​Partition support plate; 30. Collection port; 31. Sealing socket; 32. Heat channel; 33. Mounting plate; 34. Booster pump; 35. First fan; 36. Second fan. Detailed Implementation

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figures 1-8 As shown, a hydraulic control system for a permanent magnet synchronous motor monorail crane according to the present invention includes a hydraulic control device 1. A hydraulic cylinder 2 is mounted on the outer surface of the hydraulic control device 1. An input oil pipe 5 is inserted and connected to the upper surface of the hydraulic cylinder 2, and an output oil pipe 14 is inserted and connected to the lower surface of the hydraulic cylinder 2. A booster pump 34 is mounted on the upper surface of the hydraulic control device 1, and the input oil pipe 5 is connected to the booster pump 34. A hydraulic oil flow chamber 26 is provided inside the hydraulic cylinder 2. A traction assembly 500 is rotatably mounted inside the hydraulic cylinder 2, and a cleaning mechanism 400 is rotatably mounted inside the hydraulic cylinder 2. The traction assembly 500 includes an annular groove 18 opened on the upper part of the partition support plate 29 on the corresponding side, and multiple moving blocks 21 slidably disposed inside the annular groove 18. An annular plate 17 is fixedly connected to the two sealing rotating sleeves 27 on opposite sides. The annular plate 17 and the moving blocks 21 are connected to the moving blocks 21. 1. On the corresponding side, multiple traction blades 22 are connected. The operation connects the booster pump 34 of the hydraulic control device 1 to the input oil pipe 5. The temperature signal is transmitted to the external controller through the temperature sensor of the hydraulic control device 1. When the temperature is too high after use, the external controller controls the booster pump 34 to run. The booster pump 34 introduces hydraulic oil from the input oil pipe 5 into the hydraulic oil flow chamber 26. The hydraulic oil directly impacts the traction blades 22 in the hydraulic oil flow chamber 26. The hydraulic oil flows rapidly in the hydraulic oil flow chamber 26. The traction blades 22, pushed by the hydraulic oil, drive the moving block 21 to slide in the annular groove 18. When the traction blades 22 move, they drive the annular plate 17 to move. After the annular plate 17 moves, it drives the sealing sleeve 27 to slide in the fixed track 28. This facilitates the full flow of the hydraulic oil after input and improves the use effect.

[0033] Specifically, a debris collection mechanism 200 is movably installed on the lower surface of the hydraulic cylinder 2. A heat-conducting component 300 is rotatably installed inside the hydraulic cylinder 2. The heat-conducting component 300 includes an annular plate 23 fixedly connected between two sealing sleeves 27, and sealing ports 31 equidistantly spaced on the outer surface of the annular plate 23. A heat-conducting plate 13 is inserted into the inner side of the sealing port 31. One end of the heat-conducting plate 13 is located in the hydraulic oil flow chamber 26, and the other end is located in the heat channel 32. The heat-conducting plates 13 are obliquely staggered and equidistantly distributed. The material of the heat-conducting plates 13 is artificial diamond to prevent heat deposition. After the sealing sleeves 27 rotate, they drive the annular plate 23 to rotate. Under high pressure and high temperature operating conditions, the hydraulic oil will oxidize due to increased humidity. Hydrolysis and other effects cause corrosive substances to form in the oil. After the ring plate 23 rotates, it drives multiple heat-conducting plates 13 to move in a ring. Through the ring motion force of the heat-conducting plates 13, the heat deposited in the heat channel 32 is continuously moved, which in turn moves the heat generated in the equipment. After the heat-conducting plates 13 come into contact with the heat and are transferred to the other end, the heat is carried away by the impact of the hydraulic oil. This process is repeated to ensure that the heat-conducting plates 13 are in full contact with the heat, prevent heat deposition, and improve the heat transfer effect.

[0034] Specifically, a telescopic assembly 100 is fixedly installed on the outer surface of the hydraulic cylinder 2. The telescopic assembly 100 includes a mounting plate 33 fixedly installed on the outer surface of the hydraulic cylinder 2, and a hydraulic push rod 4 installed between the mounting plates 33. The extended end of the hydraulic cylinder 2 is fixedly connected to a V-shaped strip 6. T-shaped limiting posts 12 are fixedly installed at both ends of the hydraulic cylinder 2. Limiting plates 11 are movably fitted onto the outer surface of the T-shaped limiting posts 12. A limiting opening 7 is provided at one end of the limiting plate 11 to movably cooperate with the T-shaped limiting post 12. Short rods 10 are fixedly connected between the two limiting plates 11. The V-shaped strip 6 is fixedly connected to the limiting plate 11. The cleaning mechanism 400 includes connecting bent plates 20 symmetrically fixedly connected to one end of the moving block 21, and telescopic shovel plates 19 fixedly connected to one end of the connecting bent plates 20. The telescopic shovel plates 19 are made of elastic material. Arc-shaped scrapers 15 are connected to the upper ends of the connecting bent plates 20 on both sides. A heat channel 32 is provided at one end of the hydraulic cylinder 2. A first fan 35 corresponding to the hydraulic cylinder 2 is fixedly installed on the upper surface of the hydraulic control device 1. A heat channel 32 is provided at one end of the hydraulic cylinder 2. A second fan 36 is rotatably mounted in the middle of the heat channel 32. The rotation of the moving block 21 drives the connecting bent plate 20 to move continuously. After the connecting bent plate 20 moves, it drives the telescopic shovel 19 to continuously scrape against the inner wall of the hydraulic cylinder 2. When the telescopic shovel 19 moves, it drives the arc-shaped scraper 15 to scrape against the inner wall of the hydraulic cylinder 2. The arc-shaped scraper 15 rotates to the collection box 24. When the arc-shaped scraper 15 is at one end of the collection box 24, it is blocked by the collection box 24, causing the arc-shaped scraper 15 to push the telescopic shovel 19 to move. The first fan 35 is turned on by the external controller to dissipate heat from the outside of the hydraulic cylinder. Then, the rotation of the moving block 21 drives the connecting bent plate 20 to move continuously. After the connecting bent plate 20 moves, it drives the telescopic shovel 19 to scrape the inner wall of the hydraulic cylinder 2 continuously. When the telescopic shovel 19 moves, it drives the arc-shaped scraper 15 to scrape against the inner wall of the hydraulic cylinder 2. When the arc-shaped scraper 15 rotates to one end of the collection box 24, it is blocked by the collection box 24, causing the arc-shaped scraper 15 to push the telescopic shovel 19 to move. Under the movement of the arc-shaped scraper 15 and the telescopic shovel 19, the corrosive substances adsorbed on the inner wall of the hydraulic cylinder 2 are scraped off. The scraped-off material flows with the hydraulic oil. When the hydraulic oil and corrosive material pass through the collection box 24, the hydraulic oil continues to flow through the diversion mesh plate 25, while the corrosive material is trapped in the collection box 24 and discharged from the collection port 30 into the collection tank 3. After the work is completed, the switch of the hydraulic push rod 4 is turned on by the external controller. After the hydraulic push rod 4 is turned on, it drives the V-shaped strip 6 to move downward. After the V-shaped strip 6 moves, it drives the limit plate 11 to move, so that the limit opening 7 slides on the T-shaped limit post 12. Then, under the movement of the limit plate 11, it drives the short rod 10 to move. After the short rod 10 moves, it drives the collection tank 3 to move and pull it out. The self-suction door 9 of the collection tank 3 can be opened and the material can be taken out.

[0035] In use, the hydraulic push rod 4, booster pump 34, first fan 35, and second fan 36 are connected to an external controller. The operator first connects the booster pump 34 of the hydraulic control device 1 to the input oil pipe 5. The temperature sensor of the hydraulic control device 1 transmits the temperature signal to the external controller. When the temperature is too high after use, the external controller controls the booster pump 34 to operate, drawing hydraulic oil from the input oil pipe 5 into the hydraulic oil flow chamber 26. After being pressurized, the hydraulic oil enters the hydraulic oil flow chamber 26 and directly impacts the traction blade 22, causing it to move. The centerline of the oil outlet of the input oil pipe 5 is perpendicular to the surface of the traction blade 22. The hydraulic oil flows in the hydraulic oil flow chamber 26, and the traction blade 22, propelled by the hydraulic oil, drives the moving block 21 to slide in a ring within the annular groove 18. When the traction blade 22 moves, it drives the annular plate 17 to move. The annular plate 17 uses the space formed by the traction blade 22 as a cavity for hydraulic oil impact, ensuring the rotation of various components inside the hydraulic cylinder 2. When the hydraulic oil pressure is low, the components inside the hydraulic cylinder can also be driven to rotate by a motor, with hydraulic oil assisting the rotation. After the annular plate 17 moves, it drives the sealing sleeve 27 to slide within the fixed track 28. After the sealing sleeve 27 rotates, it drives the annular plate 23 to rotate. Under high pressure and high temperature operating conditions, the hydraulic oil will undergo oxidation and hydrolysis due to increased humidity, causing corrosion to form in the oil. Corrosive substances, after the ring plate 23 rotates, drive multiple heat-conducting plates 13 to move in a ring. Through the ring motion force of the heat-conducting plates 13, the heat deposited in the heat channel 32 is continuously moved, driving the heat generated in the equipment to move. The heat-conducting plates 13 come into contact with the heat and transfer it to the other end, where it is carried away by the impact of hydraulic oil. This process is repeated, ensuring that the heat-conducting plates 13 have sufficient contact with the heat, preventing heat deposition and improving the heat transfer effect. The first fan 35 is turned on by the external controller to dissipate heat around the hydraulic cylinder. Then, under the rotation of the moving block 21, the connecting bending plate 20 moves continuously. After movement, the telescopic shovel 19 continuously scrapes against the inner wall of the hydraulic cylinder 2. As the telescopic shovel 19 moves, it causes the arc-shaped scraper 15 to scrape against the inner wall of the hydraulic cylinder 2. When the arc-shaped scraper 15 rotates to one end of the collection box 24, it is blocked by the collection box 24, causing the arc-shaped scraper 15 to push the telescopic shovel 19 to move. Under the movement of the arc-shaped scraper 15 and the telescopic shovel 19, the corrosive substances adsorbed on the inner wall of the hydraulic cylinder 2 are scraped off. The scraped-off substances flow with the hydraulic oil. When the hydraulic oil and corrosive substances pass through the collection box 24, the hydraulic oil continues to flow through the diverter plate 25, while the corrosive substances are trapped in the collection box 24 and discharged from the collection port 30 into the collection tank 3. After the work is completed, the switch of the hydraulic push rod 4 is turned on by the external controller. After the hydraulic push rod 4 rotates, it causes the V-shaped strip 6 to move downwards. After the V-shaped strip 6 moves, it causes the limit plate 11 to move, causing the limit opening 7 to slide on the T-shaped limit post 12.Then, the movement of the limiting plate 11 drives the short rod 10 to move, and the movement of the short rod 10 drives the collection box 3 to move and pull it out. The self-closing door 9 of the collection box 3 can then be opened to remove the contents.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet synchronous motor monorail hoist hydraulic control system, characterized in that: The device includes a hydraulic control device (1), on the outer surface of which a hydraulic cylinder (2) is mounted. The hydraulic control device (1) is controlled by the hydraulic oil inside the hydraulic cylinder (2). A telescopic component (100) is fixedly mounted on the outer surface of the hydraulic cylinder (2). A debris collection mechanism (200) is movably arranged on the lower surface of the hydraulic cylinder (2). A heat conduction component (300) is rotatably mounted inside the hydraulic cylinder (2). A hydraulic oil flow chamber (26) is arranged inside the hydraulic cylinder (2). A traction component (500) is rotatably mounted inside the hydraulic cylinder (2). A cleaning mechanism (400) is rotatably mounted inside the hydraulic cylinder (2). A heat channel (32) is provided at one end of the hydraulic cylinder (2). A first fan (35) corresponding to the hydraulic cylinder (2) is fixedly mounted on the upper surface of the hydraulic control device (1). The telescopic assembly (100) includes a mounting plate (33) fixedly installed on the outer surface of the hydraulic cylinder (2), and a hydraulic push rod (4) installed between the mounting plates (33). The extended end of the hydraulic push rod (4) is fixedly connected to a V-shaped strip plate (6). T-shaped limit posts (12) are fixedly provided at both ends of the hydraulic cylinder (2). A limit plate (11) is movably fitted on the outer surface of the T-shaped limit post (12). One end of the limit plate (11) is provided with a limit opening (7) that movably cooperates with the T-shaped limit post (12). A short rod (10) is fixedly connected between the two limit plates (11). The V-shaped strip plate (6) is fixedly connected to the limit plate (11). The debris collection mechanism (200) includes a collection box (3) interspersed with a hydraulic cylinder (2) and a collection container (24) fixedly connected to one end of the collection box (3). The collection container (24) has a collection port (30) on its inner side. A plurality of diversion mesh plates (25) are provided at one end of the collection container (24). A self-suction door (9) is rotatably connected to one end of the collection box (3). Two short rods (10) are fixedly connected to both ends of the collection box (3).

2. The hydraulic control system for the monorail crane of the permanent magnet synchronous motor according to claim 1, characterized in that: The upper surface of the hydraulic cylinder (2) is connected to an input oil pipe (5), the lower surface of the hydraulic cylinder (2) is connected to an output oil pipe (14), the upper surface of the hydraulic control device (1) is equipped with a booster pump (34), and the input oil pipe (5) is connected to the booster pump (34).

3. The hydraulic control system for the permanent magnet synchronous motor monorail crane according to claim 1, characterized in that: The hydraulic cylinder (2) is symmetrically provided with partition support plates (29) on its inner side, and a fixed track (28) is provided between the two partition support plates (29). A sealing rotating sleeve (27) is slidably provided on the inner side of the fixed track (28).

4. The hydraulic control system for the permanent magnet synchronous motor monorail crane according to claim 3, characterized in that: The heat-conducting assembly (300) includes an annular plate (23) fixedly connected between two sealing sleeves (27) and sealing ports (31) equidistantly opened on the outer surface of the annular plate (23), with a heat-conducting plate (13) inserted through the inner side of the sealing port (31).

5. The hydraulic control system for the permanent magnet synchronous motor monorail crane according to claim 3, characterized in that: The traction assembly (500) includes an annular groove (18) on the upper part of the partition support plate (29) on the corresponding side, and a plurality of movable blocks (21) slidably disposed inside the annular groove (18). An annular plate (17) is fixedly connected to the two sealing sleeves (27) on opposite sides. A plurality of traction blades (22) are connected to the annular plate (17) on the side corresponding to the movable block (21).

6. The hydraulic control system for the permanent magnet synchronous motor monorail crane according to claim 5, characterized in that: The cleaning mechanism (400) includes a connecting bent plate (20) symmetrically fixedly connected to one end of the moving block (21), and a telescopic shovel plate (19) fixedly connected to one end of the connecting bent plate (20). The upper ends of the connecting bent plates (20) on both sides are connected to an arc-shaped scraper (15).

7. The PMSM monorail hoist hydraulic control system of claim 1, wherein: A second fan (36) is rotatably mounted in the middle of the heat channel (32).

8. The hydraulic control system for the permanent magnet synchronous motor monorail crane according to claim 4, characterized in that: One end of the heat-conducting plate (13) is located in the hydraulic oil flow chamber (26), and the other end is located in the heat channel (32). The heat-conducting plates (13) are distributed obliquely and equidistantly. The material of the heat-conducting plate (13) is artificial diamond.

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