Hydraulic hybrid power system and container front loader

Abstract

The application discloses a hydraulic composite power system and a container front crane, and relates to the technical field of hydraulic systems.The hydraulic composite power system comprises an oil tank, a battery module and an electric control module, the top of the oil tank is provided with an oil pump and an oil pump motor, the top of the oil tank is provided with an oil return pipe, and the hydraulic composite power system further comprises a filtering mechanism.The hydraulic composite power system and the container front crane are convenient for filtering and collecting impurities in hydraulic oil, can automatically discharge gas in the oil tank, can utilize the waste heat in the impurities to preheat the hydraulic oil in the oil tank, can recycle and reuse the waste heat, can automatically blow and clean the corner hole when hoisting, can automatically spray lubricating oil on the lock head to prevent rust and lubricate, and can detect the deformation of the lock head to prevent the lock head from being unable to normally insert into the container corner hole or being stuck when being unlocked.

Description

Technical Field

[0001] This invention relates to the field of hydraulic system technology, specifically to a hydraulic composite power system and a container front crane. Background Technology

[0002] Container reach stackers are crucial equipment in port logistics operations. Traditional fuel-powered systems suffer from low energy efficiency, high fuel consumption, high operating costs, failure to meet environmental requirements, excessive noise, environmental impact, high maintenance costs, and short maintenance cycles, especially for high-power internal combustion engine units which are complex and expensive to maintain. To improve port logistics efficiency and reduce operating costs, a "fuel-to-electric" conversion project is proposed. This project transforms traditional fuel-powered container reach stackers into pure electric container reach stackers, achieving zero emissions, low noise, and high efficiency, meeting environmental protection and green port construction requirements. A mature "fuel-to-electric" conversion solution is provided, reducing operating costs and improving equipment reliability and intelligence. Key components include: Power System: High-efficiency switched reluctance motors matched to the crane's load characteristics; Battery System: High-energy-density, long-cycle-life lithium iron phosphate batteries with a battery management system; Electronic Control System: Energy management, motor control, battery protection, and human-machine interaction functions; Charging System: Supports AC slow charging and DC fast charging modes, providing charging management and fault protection functions.

[0003] The core modifications include: Power source replacement: Removing the internal combustion engine assembly (including fuel tank, internal combustion engine, starter motor, and generator set) and replacing it with a battery system and charging port, thus shifting the power source from fuel to electricity. Drive system reconfiguration: Abandoning the traditional power transmission system consisting of a hydraulic coupling, hydraulic system gearbox, and multi-speed transmission, adopting an oil pump motor, oil pump motor, and travel motor controlled by a PDU (Power Distribution Unit) / VCU (Vehicle Control Unit) to directly drive the hydraulic oil pump and travel system via electricity. Connection optimization: Strengthening electrical connections and weakening the fuel supply and mechanical transmission structure, making the system more reliant on electrical energy distribution and electronic control. Battery system design: Focusing on battery capacity, energy density, and range to ensure compliance with operational time requirements. Configuring a high-efficiency battery management system (BMS) to monitor battery status (voltage, temperature, SOC, etc.) in real time, with overheat protection, overcharge and over-discharge protection functions, improving safety and lifespan. Drive Control Precision: Ensure precise control of the oil pump motor and travel motor by the PDU / VCU, matching the power and torque requirements of the hydraulic and travel systems to avoid insufficient power or energy waste. Optimize motor speed regulation and start-stop logic to ensure smooth operation (e.g., consistent steering and braking response). Hydraulic-Electrical Matching: Analyze the output characteristics (pressure, flow) of the electric oil pump and precisely match it with the hydraulic requirements of the steering, braking, boom, and lifting systems to avoid performance degradation due to changes in the power source. Electrical Safety Protection: Strengthen system insulation design to prevent leakage risks; rationally lay out wiring to reduce electromagnetic interference and ensure stable operation of electrical equipment. Provide physical protection for critical components such as batteries to prevent damage from collisions and vibrations. System Integration and Collaboration: Achieve information exchange and collaborative operation among subsystems such as battery, drive, hydraulic, and electrical control. For example, implement low battery protection mechanisms and motor overheating power reduction strategies to ensure system reliability and durability.

[0004] The container front-end crane is used for container grabbing and placement: When the crane moves above the container, the operator lowers the spreader so that the spreader's locking head inserts into the corner fitting holes on the top of the container, and the container is securely fixed to the spreader using the locking device. Then, the crane lifts the container to a certain height, moves it to the target position, and then lowers the spreader again to place the container in the designated position. Finally, the locking device is released, completing the container grabbing and placement operation.

[0005] However, existing hydraulic composite power systems and container front cranes have limitations in their operation. When impurities are present in the crane's hydraulic system, automatic filtering and collection are difficult, affecting the safety and stability of the hydraulic system. Furthermore, the introduction of air can cause lateral shifting of the spreader, unstable rotation (creeping phenomenon), reduced operational accuracy, and difficulty in precisely aligning the container, potentially leading to collisions or damage to the container, further impacting the safety and stability of the hydraulic system. When the spreader is gripping the container, impurities can easily adhere to the sidewalls of the corner fitting holes, affecting the insertion of the lock head. Additionally, the lack of lubrication and protection for the lock head makes it prone to corrosion and deformation, causing the lock head to fail to insert properly into the container corner fitting holes or become stuck during unlocking, thus affecting the efficiency and effectiveness of the lifting operation. Summary of the Invention

[0006] The purpose of this invention is to provide a hydraulic composite power system and a container front crane to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic composite power system, comprising an oil tank, a battery module, and an electronic control module. An oil pump and an oil pump motor are mounted on the top of the oil tank, and a drive shaft is provided between the oil pump motor and the oil pump. The oil pump is connected to the oil tank via a suction pipe, and a supply pipe is fixedly connected to the outlet of the oil pump. A return pipe is provided on the top of the oil tank. The hydraulic composite power system further includes:

[0008] A filtration mechanism is installed on the side wall of the return oil pipe to filter the hydraulic oil;

[0009] An exhaust mechanism, located at the top of the fuel tank, is used to exhaust the gas inside the fuel tank.

[0010] Preferably, the filtration mechanism includes a fixed cover fixedly inserted into the side wall of the return oil pipe, and a movable frame connected to the fixed cover via a movable mechanism. A partition is fixedly connected to the side wall of the movable frame, and a first filter plate and a second filter plate are rotatably connected to both sides of the partition via rotating shafts. A hollow cover is fixedly connected to the side wall of the oil tank, and a rectangular cover is fixedly inserted into the side wall of the hollow cover. A collection pipe is fixedly connected to the bottom of the fixed cover, and a heat preservation box is fixedly connected to the lower end of the collection pipe. A solenoid valve is fixedly connected between the heat preservation box and the hollow cover. The rotation of the first filter plate is driven by a first driving mechanism, and the rotation of the second filter plate is driven by a second driving mechanism.

[0011] Preferably, the moving mechanism includes two symmetrically arranged T-shaped guide rods inserted into the side wall of the fixed cover, and the T-shaped guide rods are fixed to the side wall of the moving frame. Each T-shaped guide rod has a first spring sleeved on its side wall, and a first connecting block is fixedly connected to the side wall of the moving frame. A first connecting frame is fixedly connected to the side wall of the first connecting block, and a first pushing block is fixedly connected to the side wall of the first connecting frame. A second connecting frame is fixedly connected to the top of the first connecting frame, and a second pushing block is fixedly connected to the side wall of the second connecting frame. A cam is fixedly sleeved on the side wall of the drive shaft, and the first pushing block and the second pushing block can slide on the side wall of the cam.

[0012] Preferably, the first driving mechanism includes a first rotating rod rotatably connected to the side wall of the movable frame, and one end of the first rotating rod is fixed to one end of the rotating shaft on the first filter plate. The side wall of the first rotating rod is provided with a first sliding groove, and the first sliding groove includes a first horizontal groove and a first spiral groove connected end to end. The side wall of the fixed cover is fixedly connected with a first fixing block, and the bottom of the first fixing block is fixedly connected with a first pushing rod, and the lower end of the first pushing rod can slide in the first sliding groove.

[0013] Preferably, the second driving mechanism includes a second rotating rod rotatably connected to the side wall of the movable frame, and one end of the second rotating rod is fixed to one end of the rotating shaft on the second filter plate. The side wall of the second rotating rod is provided with a second sliding groove, and the second sliding groove includes a second horizontal groove and a second spiral groove connected end to end. The inner wall of the fixed cover is fixedly connected with a second fixing block, and the bottom of the second fixing block is fixedly connected with a second pushing rod, and the lower end of the second pushing rod can slide in the second sliding groove.

[0014] Preferably, the exhaust mechanism includes a working cover fixedly connected to the top of the oil tank, and an air extraction pipe and an exhaust pipe are fixedly connected to the side wall of the working cover. A sliding block is slidably connected inside the working cover, and a third connecting frame is fixedly connected between the sliding block and the first connecting frame.

[0015] A container front crane includes a vehicle body, a boom, and a spreader. The spreader has multiple lock head assemblies at its bottom, and each lock head assembly includes a working tube fixedly connected to the bottom of the spreader. A rotating disk is rotatably connected to the bottom of the working tube, and a lock head is fixedly connected to the bottom of the rotating disk. The crane also includes a hydraulic composite power system. Each lock head assembly has a cleaning mechanism on its side wall for blowing air to clean the corner fitting holes of the container, and each lock head assembly has a protective mechanism on its side wall for protecting the lock head.

[0016] The cleaning mechanism includes two symmetrically arranged first sleeves fixedly connected to the bottom of the lifting device, and a first sleeve rod inserted into each first sleeve. A hollow annular cover is fixedly connected to the lower end of each first sleeve rod, and a second spring is fitted on the side wall of each first sleeve. Multiple air holes are opened at the bottom of the annular cover, and multiple top rods are fixedly connected to the bottom of the annular cover. An air storage box is fixedly connected to the side wall of the lifting device, and an air inlet pipe is fixedly connected to the top of the air storage box. An air outlet pipe is fixedly connected to the side wall of the air storage box, and an air supply pipe is fixedly connected to the side wall of the air outlet pipe. The other end of the air supply pipe is fixed to the side wall of the annular cover, and a lifting plate is slidably connected inside the air storage box. A third spring is fixedly connected between the lifting plate and the air storage box, and a connecting rod is fixedly connected to the bottom of the lifting plate. A connecting plate is fixedly connected between the connecting rod and the annular cover.

[0017] Preferably, the protective mechanism includes an L-shaped block fixedly connected to the bottom of the connecting plate, an oil tank fixedly connected to the side wall of the L-shaped block, a fixed cylinder fixedly connected to the side wall of the L-shaped block, a piston slidably connected inside the fixed cylinder, a moving rod inserted into the lower end of the air outlet pipe, the lower end of the moving rod being fixed to the top of the piston, a return spring fixedly connected between the piston and the fixed cylinder, a first connecting pipe fixedly connected between the fixed cylinder and the oil tank, a moving block connected to the bottom of the connecting plate via a moving assembly, multiple nozzles fixedly inserted into the bottom of the moving block, the nozzles communicating with the fixed cylinder via a second connecting pipe, an installation rod fixedly connected to the bottom of the moving block, a ball bearing provided at the bottom of the installation rod, a first visual sensor fixedly inserted into the bottom of the moving block, two mounting brackets fixedly connected to the side wall of the moving block, multiple second visual sensors fixedly inserted into the side wall of the mounting brackets, and an opening and closing assembly provided on the side wall of the air supply pipe.

[0018] Preferably, the movable component includes two symmetrically arranged second sleeves fixedly connected to the bottom of the connecting plate, and a second sleeve rod inserted inside the second sleeve. The lower end of the second sleeve rod is fixedly connected to a second connecting block, and a fourth spring is sleeved on the side wall of each second sleeve. Two third sleeves are fixedly connected to the side wall of the second connecting block, and a third sleeve rod is inserted inside the third sleeve. The other end of the third sleeve rod is fixed to the movable block, and a fifth spring is sleeved on the side wall of each third sleeve. The top of the connecting plate has a strip-shaped opening, and a slider is slidably connected inside the strip-shaped opening. The slider is fixed to the top of the movable block, and a push pin is fixedly connected to the top of the slider. The top of the connecting plate is fixedly connected to a push plate, and a third sliding groove is opened on the side wall of the push plate. The third sliding groove includes a vertical groove and an inclined groove connected end to end, and the push pin can slide inside the third sliding groove.

[0019] Preferably, the opening and closing assembly includes a mounting cover fixedly inserted into the side wall of the air supply pipe, and a sliding plate is slidably connected inside the mounting cover. The side wall of the sliding plate has a circular hole, and a sixth spring is fixedly connected between the sliding plate and the mounting cover. An L-shaped push frame is fixedly connected to the top of the sliding plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This type of hydraulic hybrid power system and container front crane, through the installation of filtration, exhaust, cleaning, and protective mechanisms, facilitates the filtration and collection of impurities in the hydraulic oil. Simultaneously, it automatically vents gas from the oil tank, making it more convenient and efficient, and ensuring the effectiveness and lifespan of the hydraulic hybrid power system. It can utilize the residual heat from impurities to preheat the hydraulic oil in the tank, ensuring its effectiveness, and can also recover and reuse this residual heat, making it more energy-efficient and environmentally friendly. During lifting, it can automatically blow air to clean the corner fitting holes, and automatically spray lubricating oil onto the lock heads for rust prevention and lubrication. Furthermore, it can detect lock head deformation to prevent the lock heads from failing to properly insert into the container corner fitting holes or getting stuck during unlocking, ensuring lifting efficiency and effectiveness. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the fuel tank in this invention;

[0024] Figure 3 This is a partial cross-sectional view of the hollow cover and the fixed cover in this invention;

[0025] Figure 4 This is a schematic diagram showing the position of the second driving mechanism in this invention;

[0026] Figure 5 This is a schematic diagram showing the position of the first driving mechanism in this invention;

[0027] Figure 6 This is a schematic diagram showing the positions of the cleaning mechanism and the protective mechanism in this invention;

[0028] Figure 7 This is a partial cross-sectional view of the gas storage tank in this invention.

[0029] Figure 8 for Figure 1 Enlarged structural diagram at point A;

[0030] Figure 9 for Figure 2 Enlarged structural diagram at point B;

[0031] Figure 10 for Figure 3 Enlarged structural diagram at point C;

[0032] Figure 11 for Figure 4 Enlarged structural diagram at point D;

[0033] Figure 12 for Figure 5 Enlarged structural diagram at point E;

[0034] Figure 13 for Figure 6 Enlarged structural diagram at point F;

[0035] Figure 14 for Figure 7 Enlarged structural diagram at point G;

[0036] Figure 15 for Figure 13 Enlarged structural diagram at point H;

[0037] Figure 16 for Figure 14 Enlarged structural diagram at point I;

[0038] Figure 17 for Figure 16 Enlarged structural diagram at point J;

[0039] Figure 18 for Figure 16 A magnified structural diagram at point K.

[0040] In the diagram: 101, oil tank; 102, battery module; 103, electronic control module; 104, oil pump; 105, oil pump motor; 106, drive shaft; 107, oil suction pipe; 108, oil supply pipe; 109, oil return pipe; 201, moving frame; 202, partition plate; 203, first filter plate; 204, second filter plate; 205, insulation box; 206, collection pipe; 207, hollow cover; 208, rectangular cover; 209, solenoid valve; 210, fixed cover; 301, first connecting block; 302, first connecting frame; 303, first pushing block; 304, second connecting frame; 305, second pushing block; 3 06. Cam; 307. T-shaped guide rod; 308. First spring; 401. First rotating rod; 402. First horizontal groove; 403. First spiral groove; 404. First fixing block; 405. First push rod; 501. Second rotating rod; 502. Second horizontal groove; 503. Second spiral groove; 504. Second fixing block; 505. Second push rod; 601. Working cover; 602. Exhaust pipe; 603. Suction pipe; 604. Third connecting frame; 605. Sliding block; 701. First sleeve; 702. First sleeve rod; 703. Second spring; 704. Annular cover; 705. Air blowing hole 706. Air tank; 707. Lifting plate; 708. Third spring; 709. Air outlet pipe; 710. Air inlet pipe; 711. Air supply pipe; 712. Connecting plate; 713. Connecting rod; 714. Top rod; 801. L-shaped block; 802. Oil tank; 803. Fixed cylinder; 804. Piston; 805. Moving rod; 806. First connecting pipe; 807. Moving block; 808. Nozzle; 809. First vision sensor; 810. Mounting rod; 811. Ball bearing; 812. Mounting bracket; 813. Second vision sensor; 814. Second connecting pipe; 815. Return spring; 901. Cover; 902, Sliding plate; 903, Round hole; 904, Sixth spring; 905, Push frame; 1001, Second sleeve; 1002, Second rod; 1003, Fourth spring; 1004, Second connecting block; 1005, Third sleeve; 1006, Third rod; 1007, Fifth spring; 1008, Strip opening; 1009, Slider; 1010, Push plate; 1011, Vertical groove; 1012, Inclined groove; 1013, Push pin; 1101, Car body; 1102, Boom; 1103, Lifting device; 1104, Working pipe; 1105, Rotary disc; 1106, Lock head. Detailed Implementation

[0041] 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.

[0042] Please see Figures 1-18 This invention provides a hydraulic composite power system, including an oil tank 101, a battery module 102, and an electronic control module 103. An oil pump 104 and an oil pump motor 105 are mounted on the top of the oil tank 101, and a drive shaft 106 is provided between the oil pump motor 105 and the oil pump 104. The oil pump 104 is connected to the oil tank 101 via an oil suction pipe 107, and an oil supply pipe 108 is fixedly connected to the outlet of the oil pump 104. A return oil pipe 109 is provided on the top of the oil tank 101. Two sets of oil pump motors 105 and oil pumps 104 are provided: one set for driving the steering and braking systems of a container front crane, and the other set for driving the boom system and spreader system. The hydraulic composite power system also includes:

[0043] A filter mechanism is installed on the side wall of the return oil pipe 109 to filter the hydraulic oil;

[0044] The exhaust mechanism, located at the top of the oil tank 101, is used to discharge the gas inside the oil tank 101, facilitating the filtration and collection of impurities in the hydraulic oil. It also automatically discharges the gas from the oil tank 101, making the process more convenient and efficient, and ensuring the effectiveness and lifespan of the hydraulic composite power system. Furthermore, it utilizes the residual heat from impurities to preheat the hydraulic oil in the oil tank 101, ensuring its performance. The residual heat can also be recovered and reused, making it more energy-efficient and environmentally friendly.

[0045] The filtration mechanism includes a fixed cover 210 fixedly inserted into the side wall of the return oil pipe 109, and a movable frame 201 connected inside the fixed cover 210 via a movable mechanism. A partition 202 is fixedly connected to the side wall of the movable frame 201, and a first filter plate 203 and a second filter plate 204 are rotatably connected to both sides of the partition 202 via rotating shafts. Rubber sealing gaskets are fixedly fitted on the side walls of the first filter plate 203 and the second filter plate 204 to ensure normal rotation and to ensure sealing when horizontal. A hollow cover 207 is fixedly connected to the side wall of the oil tank 101, and a rectangular cover is fixedly inserted into the side wall of the hollow cover 207. 208. A collection pipe 206 is fixedly connected to the bottom of the fixed cover 210, and an insulation box 205 is fixedly connected to the lower end of the collection pipe 206. A solenoid valve 209 is fixedly connected between the insulation box 205 and the hollow cover 207. The rotation of the first filter plate 203 is driven by the first drive mechanism, and the rotation of the second filter plate 204 is driven by the second drive mechanism. In use, the oil pump motor 105 is started, and the rotation of the oil pump motor 105 drives the rotation of the drive shaft 106, thereby driving the oil pump 104 to work, so that the hydraulic oil in the oil tank 101 can pass through the oil extraction pipe 10. 7. The oil enters the oil pump 104, then flows out through the oil supply pipe 108 to the container front crane for operation. Afterwards, it flows through the return oil pipe 109 to the second filter plate 204 inside the fixed cover 210 for filtration. The filtered hydraulic oil returns to the oil tank 101, while impurities remain on the second filter plate 204. A moving mechanism drives the moving frame 201 to move. Simultaneously, a first drive mechanism drives the first filter plate 203 to flip, and a second drive mechanism drives the second filter plate 204 to flip, causing impurities to fall to the bottom of the fixed cover 210. The impurities in the hydraulic oil are temporarily stored in the insulation box 205 through the collection pipe 206. During the circulation of hydraulic oil, impurities in the hydraulic oil can be filtered and collected, which is more convenient and faster, and ensures the performance and life of the hydraulic composite power system. When the hydraulic oil in the oil tank 101 is at a low temperature, the solenoid valve 209 is opened, allowing the impurities temporarily stored in the insulation box 205 to enter the hollow cover 207. At this time, the residual heat in the impurities can be used to preheat the hydraulic oil in the oil tank 101, ensuring its performance. Furthermore, the residual heat can be recovered and reused, making it more energy-efficient and environmentally friendly.

[0046] The moving mechanism is inserted into two symmetrically arranged T-shaped guide rods 307 on the side wall of the fixed cover 210, and the T-shaped guide rods 307 are fixed to the side wall of the moving frame 201. A first spring 308 is sleeved on the side wall of each T-shaped guide rod 307. A first connecting block 301 is fixedly connected to the side wall of the moving frame 201. A first connecting frame 302 is fixedly connected to the side wall of the first connecting block 301. A first pushing block 303 is fixedly connected to the side wall of the first connecting frame 302. A second connecting frame 304 is fixedly connected to the top of the first connecting frame 302. A second pushing block 305 is fixedly connected to the side wall of the second connecting frame 304. A cam 306 is fixedly sleeved on the side wall of the drive shaft 106. The first pushing block 303... The second push block 305 can slide on the side wall of the cam 306. When the drive shaft 106 rotates, it drives the cam 306 to rotate synchronously. When the tip of the cam 306 abuts against the first push block 303 or the second push block 305, it can push the first connecting frame 302 to move. At the same time, the first connecting block 301 drives the moving frame 201 to move into the fixed cover 210. Meanwhile, the first spring 308 is compressed. When the tip of the cam 306 passes the first push block 303 or the second push block 305, the moving frame 201 can move and reset under the action of the first spring 308. By repeating this process, the moving frame 201 can move back and forth within the fixed cover 210.

[0047] The first driving mechanism includes a first rotating rod 401 rotatably connected to the side wall of the movable frame 201, and one end of the first rotating rod 401 is fixed to one end of the rotating shaft on the first filter plate 203. The side wall of the first rotating rod 401 is provided with a first sliding groove, and the first sliding groove includes a first horizontal groove 402 and a first spiral groove 403 connected end to end. The side wall of the fixed cover 210 is fixedly connected to a first fixing block 404, and the bottom of the first fixing block 404 is fixedly connected to a first pushing rod 405. The lower end of the first pushing rod 405 can slide in the first sliding groove. When the movable frame 201 moves into the fixed cover 210, it drives the first rotating rod 401 to move synchronously, so that the first pushing rod 405 can slide along the first spiral groove 403, thereby causing the first filter plate 203 to rotate 180 degrees. After the first filter plate 203 is rotated, the first pushing rod 405 can slide along the first horizontal groove 402.

[0048] The second driving mechanism includes a second rotating rod 501 rotatably connected to the side wall of the movable frame 201, and one end of the second rotating rod 501 is fixed to one end of the rotating shaft on the second filter plate 204. The side wall of the second rotating rod 501 is provided with a second sliding groove, and the second sliding groove includes a second horizontal groove 502 and a second spiral groove 503 connected end to end. The inner wall of the fixed cover 210 is fixedly connected to a second fixed block 504, and the bottom of the second fixed block 504 is fixedly connected to a second pushing rod 505. The lower end of the second pushing rod 505 can slide in the second sliding groove. When the movable frame 201 moves into the fixed cover 210, it drives the second rotating rod 501 to move synchronously. The second pushing rod 505 slides along the second horizontal groove 502. When the second filter plate 204 is moved away from below the oil return pipe 109, the second pushing rod 505 slides into the second spiral groove 503, which can push the second filter plate 204 to rotate 180 degrees.

[0049] The exhaust mechanism includes a working cover 601 fixedly connected to the top of the oil tank 101. A suction pipe 603 and an exhaust pipe 602 are fixedly connected to the side wall of the working cover 601. A first one-way valve is installed inside the suction pipe 603, extending from the oil tank 101 into the working cover 601. A second one-way valve is installed inside the exhaust pipe 602, with its conduction direction extending from the working cover 601 to the outside. A sliding block 605 is slidably connected inside the working cover 601. A third connecting frame 604 is fixedly connected between the sliding block 605 and the first connecting frame 302. When the first connecting frame 302 reciprocates, the sliding block 605 is driven by the third connecting frame 604. The movable block 605 reciprocates within the working cover 601. When the sliding block 605 moves away from the working cover 601, it creates a negative pressure within the working cover 601. Simultaneously, the first check valve opens and the second check valve closes, allowing gas in the oil tank 101 to be temporarily stored in the working cover 601 through the suction pipe 603. When the sliding block 605 moves into the working cover 601, it compresses the gas temporarily stored within the working cover 601. At the same time, the first check valve closes and the second check valve opens. This reciprocating motion automatically discharges the gas from the oil tank 101, ensuring the effectiveness and lifespan of the hydraulic composite power system.

[0050] A container front crane includes a vehicle body 1101, a boom 1102, and a spreader 1103. The bottom of the spreader 1103 is provided with multiple lock head assemblies, and each lock head assembly includes a working tube 1104 fixedly connected to the bottom of the spreader 1103. The bottom of the working tube 1104 is rotatably connected to a rotating disk 1105, and the bottom of the rotating disk 1105 is fixedly connected to a lock head 1106. The components of the spreader 1103 are known in the art and will not be described in detail here. The crane also includes a hydraulic composite power system. The side wall of each lock head assembly is provided with a cleaning mechanism for blowing air to clean the corner holes of the container, and the side wall of each lock head assembly is provided with a protective mechanism for protecting the lock head 1106.

[0051] The cleaning mechanism includes two symmetrically arranged first sleeves 701 fixedly connected to the bottom of the hanger 1103, and a first sleeve rod 702 is inserted into each first sleeve 701. A hollow annular cover 704 is fixedly connected to the lower end of the first sleeve rod 702, and a second spring 703 is sleeved on the side wall of each first sleeve 701. Multiple air holes 705 are opened at the bottom of the annular cover 704, and multiple push rods 7 are fixedly connected to the bottom of the annular cover 704. 14. A gas storage tank 706 is fixedly connected to the side wall of the lifting device 1103, and an air inlet pipe 710 is fixedly connected to the top of the gas storage tank 706. A third one-way valve is installed inside the air inlet pipe 710, and the conduction direction of the third one-way valve is from the outside to the inside of the gas storage tank 706. An air outlet pipe 709 is fixedly connected to the side wall of the gas storage tank 706, and a fourth one-way valve is installed inside the air outlet pipe 709, and the conduction direction of the fourth one-way valve is from the gas storage tank 706 to the air outlet pipe 709. An air supply pipe 711 is fixedly connected to the side wall of the air outlet pipe 709. The other end of the air supply pipe 711 is fixed to the side wall of the annular cover 704. A lifting plate 707 is slidably connected inside the air storage tank 706. A third spring 708 is fixedly connected between the lifting plate 707 and the air storage tank 706. When the lifting plate 707 moves downward and resets under the action of the third spring 708, air can be drawn into the air storage tank 706 through the air inlet pipe 710. A connecting rod 713 is fixedly connected to the bottom of the lifting plate 707. A connecting plate 712 is fixedly connected between the connecting rod 713 and the annular cover 704. During hoisting, the corner fitting hole can be automatically cleaned by blowing air. At the same time, the lock head 1106 can be automatically sprayed with lubricating oil for rust prevention and lubrication. Furthermore, the deformation of the lock head 1106 can be detected to prevent the lock head 1106 from failing to insert properly into the container corner fitting hole or getting stuck when unlocking, thus ensuring the efficiency and effectiveness of hoisting.

[0052] The protective mechanism includes an L-shaped block 801 fixedly connected to the bottom of the connecting plate 712, with an oil reservoir 802 fixedly connected to the side wall of the L-shaped block 801. A fixed cylinder 803 is fixedly connected to the side wall of the L-shaped block 801, and a piston 804 is slidably connected inside the fixed cylinder 803. A moving rod 805 is inserted into the lower end of the vent pipe 709, and the lower end of the moving rod 805 is fixed to the top of the piston 804. A return spring 815 is fixedly connected between the piston 804 and the fixed cylinder 803. When the piston 804 moves upward and resets under the action of the return spring 815, the lubricating oil in the oil reservoir 802 can enter the fixed cylinder 803 through the first connecting pipe 806. The first connecting pipe 806 is fixedly connected between the fixed cylinder 803 and the oil reservoir 802. A fifth one-way valve is installed inside the connector 806, and the conduction direction of the fifth one-way valve is from the oil reservoir 802 to the fixed cylinder 803. A movable block 807 is connected to the bottom of the connecting plate 712 via a movable component. Multiple nozzles 808 are fixedly inserted into the bottom of the movable block 807, and the nozzles 808 are connected to the fixed cylinder 803 via a second connecting pipe 814. A sixth one-way valve is installed inside the second connecting pipe 814, and the conduction direction of the sixth one-way valve is from the fixed cylinder 803 to the nozzles 808. A mounting rod 810 is fixedly connected to the bottom of the movable block 807, and a ball bearing 811 is installed at the bottom of the mounting rod 810. A first vision sensor 809 is fixedly inserted into the bottom of the movable block 807, and two mounting brackets 812 are fixedly connected to the side wall of the movable block 807. Multiple second vision sensors 813 are fixedly inserted into the side wall of the frame 812, and an opening and closing component is provided on the side wall of the air supply pipe 711. After the air blowing cleaning is completed, when the hanger 1103 continues to move downward, it can drive the air storage tank 706 to continue to move downward, and the opening and closing component closes. At this time, air no longer passes through the air supply pipe 711, that is, the air blowing operation stops. When the air storage tank 706 continues to move downward, the air in the air storage tank 706 can continue to be compressed by the lifting plate 707. At this time, the air pressure in the air outlet pipe 709 gradually increases. Under the action of air pressure, the piston 804 can be pushed downward by the moving rod 805 to squeeze the lubricating oil temporarily stored in the fixed cylinder 803. At the same time, the return spring 815 is compressed. The lubricating oil in the fixed cylinder 803 can enter the nozzle 808 through the second connecting pipe 814 and be sprayed onto the top of the lock head 1106, providing rust prevention and lubrication to its top and sides, ensuring the effectiveness and lifespan of the lock head 1106. Simultaneously, when the annular cover 704 stops moving, as the rotating disk 1105 drives the lock head 1106 to continue moving downwards, the second connecting block 1004 and the moving block 807 can gradually move downwards under the action of the fourth spring 1003, ensuring that the ball bearing 811 always abuts against the top of the lock head 1106, thus guaranteeing the spray height of the nozzle 808 and ensuring the spraying effect. Furthermore, when the moving block 807 moves downwards, the moving assembly can drive the moving block 807 and the nozzle 808 to move as well.The ball bearing 811 is fixed at the top of the lock head 1106, thus improving the oil spraying effect. When the moving block 807 moves, it can drive the first vision sensor 809 to move, and through the mounting bracket 812, it can drive the second vision sensor 813 to move. At this time, deformation of the lock head 1106 can be detected, preventing the lock head 1106 from failing to properly insert into the container corner fitting hole or getting stuck during unlocking, ensuring the efficiency and effectiveness of lifting.

[0053] The movable component includes two symmetrically arranged second sleeves 1001 fixedly connected to the bottom of the connecting plate 712, with a second sleeve rod 1002 inserted inside each second sleeve 1001. A second connecting block 1004 is fixedly connected to the lower end of each second sleeve rod 1002. A fourth spring 1003 is fitted onto the side wall of each second sleeve 1001. Two third sleeves 1005 are fixedly connected to the side wall of the second connecting block 1004, with a third sleeve rod 1006 inserted inside each third sleeve 1005. The other end of the third sleeve rod 1006 is fixed to the movable block 807, and a fifth spring 1007 is fitted onto the side wall of each third sleeve 1005. A strip-shaped opening 1008 is provided at the top of the connecting plate 712, and a slider 1009 is slidably connected within the strip-shaped opening 1008. 9 is fixed to the top of the movable block 807, and the top of the slider 1009 is fixedly connected to the push pin 1013. The top of the connecting plate 712 is fixedly connected to the push plate 1010, and the side wall of the push plate 1010 is provided with a third sliding groove. The third sliding groove includes a vertical groove 1011 and an inclined groove 1012 connected end to end. The push pin 1013 can slide in the third sliding groove. When the movable block 807 moves downward, the slider 1009 can drive the push pin 1013 to slide along the vertical groove 1011 to the inclined groove 1012, thereby pushing the movable block 807 to move closer to the second connecting block 1004. At the same time, the fifth spring 1007 is compressed. When the movable block 807 moves, it can drive the nozzle 808 to move, thereby making the oil spraying effect better.

[0054] The opening and closing assembly includes a mounting cover 901 fixedly inserted into the side wall of the air supply pipe 711, and a sliding plate 902 slidably connected inside the mounting cover 901. A circular hole 903 is provided on the side wall of the sliding plate 902, and a sixth spring 904 is fixedly connected between the sliding plate 902 and the mounting cover 901. An L-shaped pusher frame 905 is fixedly connected to the top of the sliding plate 902. After the air cleaning is completed, when the hanger 1103 continues to move downwards, it can drive the air storage tank 706 to continue moving downwards. When the air storage tank 706 abuts against the top of the pusher frame 905, it can push the sliding plate 902 to open. Plate 902 moves downward along mounting cover 901. At the same time, the sixth spring 904 is compressed, causing the round hole 903 to be misaligned with the air supply pipe 711. At this time, air no longer passes through the air supply pipe 711, that is, the blowing operation is no longer performed. When the air storage tank 706 continues to move downward, the air in the air storage tank 706 can continue to be squeezed by the lifting plate 707. At this time, the air pressure in the air outlet pipe 709 can gradually increase. Under the action of air pressure, the piston 804 can be pushed downward by the moving rod 805 to squeeze the lubricating oil temporarily stored in the fixed cylinder 803.

[0055] Working principle: During operation, the oil pump motor 105 is started, and the rotation of the oil pump motor 105 drives the drive shaft 106 to rotate, thereby driving the oil pump 104 to work. This allows the hydraulic oil in the oil tank 101 to enter the oil pump 104 through the oil suction pipe 107. Then, it flows out through the oil supply pipe 108 to the container front crane for operation. Afterward, it enters the second filter plate 204 inside the fixed cover 210 through the oil return pipe 109 for filtration. The filtered hydraulic oil returns to the oil tank 101, while impurities remain on the second filter plate 204. Simultaneously, when the drive shaft 106 enters... When the cam rotates, it drives the cam 306 to rotate synchronously. When the tip of the cam 306 abuts against the first push block 303 or the second push block 305, it can push the first connecting frame 302 to move. At the same time, the first connecting block 301 drives the moving frame 201 to move into the fixed cover 210. Meanwhile, the first spring 308 is compressed. When the tip of the cam 306 passes the first push block 303 or the second push block 305, the moving frame 201 can move and reset under the action of the first spring 308. By repeating this process, the moving frame 201 can move back and forth within the fixed cover 210.

[0056] When the moving frame 201 moves into the fixed cover 210, it drives the first rotating rod 401 and the second rotating rod 501 to move synchronously, allowing the first pushing rod 405 to slide along the first spiral groove 403, thereby causing the first filter plate 203 to rotate 180 degrees. The second pushing rod 505 slides along the second horizontal groove 502. After the first filter plate 203 has rotated, the first pushing rod 405 can slide along the first horizontal groove 402, causing the first filter plate 203 to gradually move to a position coinciding with the return oil pipe 109, thus filtering the hydraulic oil. When the second filter plate 204 moves away from below the return oil pipe 109, the second pushing rod 505 slides into the second spiral groove 503, pushing the second filter plate 204 to rotate 180 degrees, thereby allowing impurities on the second filter plate 204 to fall to the bottom of the fixed cover 210. When the moving frame 201 moves away from the fixed cover 210... Similarly, after the second filter plate 204 is rotated 180 degrees, it gradually moves to a position overlapping with the return oil pipe 109 to filter the hydraulic oil. After the first filter plate 203 is moved away from below the return oil pipe 109, it can be rotated 180 degrees, allowing impurities on the first filter plate 203 to fall to the bottom of the fixed cover 210. Then, they enter the heat preservation box 205 through the collection pipe 206 for temporary storage. During the hydraulic oil circulation process, impurities in the hydraulic oil can be filtered and collected, which is more convenient and faster, and ensures the use effect and life of the hydraulic composite power system. Furthermore, when the hydraulic oil in the oil tank 101 is at a low temperature, the solenoid valve 209 is opened, allowing the impurities temporarily stored in the heat preservation box 205 to enter the hollow cover 207. At this time, the residual heat in the impurities can be used to preheat the hydraulic oil in the oil tank 101, ensuring its use effect. Moreover, the residual heat can be recovered and reused, which is more energy-saving and environmentally friendly.

[0057] When the first connecting frame 302 reciprocates, it drives the sliding block 605 to reciprocate within the working cover 601 via the third connecting frame 604. When the sliding block 605 moves away from the working cover 601, it creates a negative pressure within the working cover 601. Simultaneously, the first one-way valve opens and the second one-way valve closes, allowing gas in the oil tank 101 to be temporarily stored in the working cover 601 through the suction pipe 603. When the sliding block 605 moves into the working cover 601, it compresses the gas temporarily stored within the working cover 601. At the same time, the first one-way valve closes and the second one-way valve opens. This reciprocating motion automatically discharges the gas from the oil tank 101, ensuring the effectiveness and lifespan of the hydraulic composite power system.

[0058] When the container needs to be lifted, the spreader 1103 is moved directly above the container. Then, the spreader 1103 is moved downwards, aligning the rotating disc 1105 and the locking head 1106 with the corner fitting holes of the container. When the top rod 714 abuts against the top of the spreader 1103, as the spreader 1103 continues to move downwards, the second spring 703 is gradually compressed. Simultaneously, the lifting plate 707 is pushed upwards along the air tank 706 via the connecting rod 713, and the third spring 708 is compressed. At this point, the air tank 706 can be temporarily stored. The air is compressed, and at the same time, the third one-way valve closes and the fourth one-way valve opens, allowing the air in the air storage tank 706 to enter the annular cover 704 through the air outlet pipe 709 and the air supply pipe 711, and be blown out through the air blowing hole 705. This enables automatic air blowing and cleaning of the corner fitting hole, ensuring that the lock head 1106 can be properly inserted into the corner fitting hole, avoiding jamming, and ensuring the lifting effect. After the lock head 1106 is inserted into the corner fitting hole, the lock head 1106 is driven to rotate 90 degrees. Then, the spreader 1103 can be moved upward to lift the container.

[0059] After the air blowing cleaning is completed, as the lifting device 1103 continues to move downward, it can drive the air storage tank 706 to continue moving downward. When the air storage tank 706 abuts against the top of the push frame 905, it can push the sliding plate 902 to move downward along the mounting cover 901. At the same time, the sixth spring 904 is compressed, causing the round hole 903 to be misaligned with the air supply pipe 711. At this time, air no longer passes through the air supply pipe 711, that is, the air blowing operation stops. As the air storage tank 706 continues to move downward, the lifting plate 707 can clean the contents of the air storage tank 706. As the air continues to be compressed, the air pressure in the air outlet pipe 709 gradually increases. Under the action of air pressure, the piston 804 is pushed downward by the moving rod 805, which compresses the lubricating oil temporarily stored in the fixed cylinder 803. At the same time, the return spring 815 is compressed. At this time, the lubricating oil in the fixed cylinder 803 can enter the nozzle 808 through the second connecting pipe 814 and be sprayed on the top of the lock head 1106, which can prevent rust and lubricate the top and sides of the lock head 1106, ensuring the effectiveness and life of the lock head 1106.

[0060] When the annular cover 704 stops moving, as the rotating disk 1105 drives the locking head 1106 to continue moving downwards, under the action of the fourth spring 1003, the second connecting block 1004 and the moving block 807 can gradually move downwards, ensuring that the ball 811 always abuts against the top of the locking head 1106, thereby guaranteeing the spray height of the nozzle 808 and ensuring the spraying effect. Furthermore, when the moving block 807 moves downwards, it can drive the push pin 1013 to slide along the vertical groove 1011 to the inclined groove 1012 via the slider 1009, thereby pushing the moving block 807 towards the... The moving block 807 moves towards the second connecting block 1004, while the fifth spring 1007 is compressed. When the moving block 807 moves, it can drive the nozzle 808 to move, thereby improving the oil spraying effect. When the moving block 807 moves, it can drive the first vision sensor 809 to move, and can drive the second vision sensor 813 to move through the mounting bracket 812. At this time, the deformation of the lock head 1106 can be detected to prevent the lock head 1106 from failing to properly insert into the container corner fitting hole or getting stuck when unlocking, thus ensuring the efficiency and effect of hoisting.

[0061] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0062] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hydraulic composite power system, comprising an oil tank (101), a battery module (102), and an electronic control module (103), wherein an oil pump (104) and an oil pump motor (105) are disposed on the top of the oil tank (101), and a drive shaft (106) is disposed between the oil pump motor (105) and the oil pump (104), the oil pump (104) is connected to the oil tank (101) through an oil suction pipe (107), and an oil supply pipe (108) is fixedly connected to the outlet of the oil pump (104), and a return oil pipe (109) is disposed on the top of the oil tank (101), characterized in that: The hydraulic composite power system also includes: A filtration mechanism is installed on the side wall of the return oil pipe (109) for filtering hydraulic oil; An exhaust mechanism is provided on the top of the oil tank (101) for exhausting the gas inside the oil tank (101); The filtration mechanism includes a fixed cover (210) fixedly inserted into the side wall of the return oil pipe (109), and a movable frame (201) connected inside the fixed cover (210) via a movable mechanism. A partition (202) is fixedly connected to the side wall of the movable frame (201), and a first filter plate (203) and a second filter plate (204) are rotatably connected to both sides of the partition (202) via a rotating shaft. A hollow cover (207) is fixedly connected to the side wall of the oil tank (101), and the hollow cover (207) is... A rectangular cover (208) is fixedly inserted into the side wall of the fixed cover (210). A collection pipe (206) is fixedly connected to the bottom of the fixed cover (210), and an insulation box (205) is fixedly connected to the lower end of the collection pipe (206). A solenoid valve (209) is fixedly connected between the insulation box (205) and the hollow cover (207). The rotation of the first filter plate (203) is driven by the first driving mechanism, and the rotation of the second filter plate (204) is driven by the second driving mechanism. The moving mechanism includes two symmetrically arranged T-shaped guide rods (307) inserted into the side wall of the fixed cover (210), and the T-shaped guide rods (307) are fixed to the side wall of the moving frame (201). Each T-shaped guide rod (307) is fitted with a first spring (308) on its side wall, and the side wall of the moving frame (201) is fixedly connected to a first connecting block (301). The side wall of the first connecting block (301) is fixedly connected to a first connecting frame (302), and the side wall of the first connecting frame (302) is fixedly connected to a first pushing block (303). The top of the first connecting frame (302) is fixedly connected to a second connecting frame (304), and the side wall of the second connecting frame (304) is fixedly connected to a second pushing block (305). The side wall of the drive shaft (106) is fixedly fitted with a cam (306), and the first pushing block (303) and the second pushing block (305) can slide on the side wall of the cam (306).

2. The hydraulic composite power system according to claim 1, characterized in that: The first driving mechanism includes a first rotating rod (401) rotatably connected to the side wall of the movable frame (201), and one end of the first rotating rod (401) is fixed to one end of the rotating shaft on the first filter plate (203). The side wall of the first rotating rod (401) is provided with a first sliding groove, and the first sliding groove includes a first horizontal groove (402) and a first spiral groove (403) connected end to end. The side wall of the fixed cover (210) is fixedly connected with a first fixed block (404), and the bottom of the first fixed block (404) is fixedly connected with a first push rod (405), and the lower end of the first push rod (405) can slide in the first sliding groove.

3. The hydraulic composite power system according to claim 1, characterized in that: The second driving mechanism includes a second rotating rod (501) rotatably connected to the side wall of the movable frame (201), and one end of the second rotating rod (501) is fixed to one end of the rotating shaft on the second filter plate (204). The side wall of the second rotating rod (501) is provided with a second sliding groove, and the second sliding groove includes a second horizontal groove (502) and a second spiral groove (503) connected end to end. The inner wall of the fixed cover (210) is fixedly connected with a second fixed block (504), and the bottom of the second fixed block (504) is fixedly connected with a second push rod (505), and the lower end of the second push rod (505) can slide in the second sliding groove.

4. The hydraulic composite power system according to claim 1, characterized in that: The exhaust mechanism includes a working cover (601) fixedly connected to the top of the oil tank (101), and an exhaust pipe (603) and an exhaust pipe (602) are fixedly connected to the side wall of the working cover (601). A sliding block (605) is slidably connected inside the working cover (601), and a third connecting frame (604) is fixedly connected between the sliding block (605) and the first connecting frame (302).

5. A container front crane, comprising a vehicle body (1101), a boom (1102), and a spreader (1103), wherein the bottom of the spreader (1103) is provided with a plurality of locking head assemblies, and each locking head assembly includes a working tube (1104) fixedly connected to the bottom of the spreader (1103), the bottom of the working tube (1104) is rotatably connected to a rotating disk (1105), and the bottom of the rotating disk (1105) is fixedly connected to a locking head (1106), characterized in that: It also includes a hydraulic composite power system as described in any one of claims 1-4, wherein each lock assembly is provided with a cleaning mechanism for blowing air to clean the corner holes of the container, and each lock assembly is provided with a protective mechanism for protecting the lock head (1106). The cleaning mechanism includes two symmetrically arranged first sleeves (701) fixedly connected to the bottom of the hanger (1103), and a first sleeve rod (702) is inserted into each first sleeve (701). A hollow annular cover (704) is fixedly connected to the lower end of the first sleeve rod (702), and a second spring (703) is sleeved on the side wall of each first sleeve (701). The bottom of the annular cover (704) has multiple air holes (705), and multiple top rods (714) are fixedly connected to the bottom of the annular cover (704). An air storage box (706) is fixedly connected to the side wall of the hanger (1103), and the air storage box (706)... An air inlet pipe (710) is fixedly connected to the top, an air outlet pipe (709) is fixedly connected to the side wall of the air storage box (706), and an air supply pipe (711) is fixedly connected to the side wall of the air outlet pipe (709). The other end of the air supply pipe (711) is fixed to the side wall of the annular cover (704). A lifting plate (707) is slidably connected inside the air storage box (706). A third spring (708) is fixedly connected between the lifting plate (707) and the air storage box (706). A connecting rod (713) is fixedly connected to the bottom of the lifting plate (707). A connecting plate (712) is fixedly connected between the connecting rod (713) and the annular cover (704).

6. A container front crane according to claim 5, characterized in that: The protective mechanism includes an L-shaped block (801) fixedly connected to the bottom of the connecting plate (712), and an oil tank (802) fixedly connected to the side wall of the L-shaped block (801). A fixed cylinder (803) is fixedly connected to the side wall of the L-shaped block (801), and a piston (804) is slidably connected inside the fixed cylinder (803). A moving rod (805) is inserted into the lower end of the vent pipe (709), and the lower end of the moving rod (805) is fixed to the top of the piston (804). A return spring (815) is fixedly connected between the piston (804) and the fixed cylinder (803). A first connecting pipe (806) is fixedly connected between the fixed cylinder (803) and the oil tank (802), and the connecting plate (712) A movable block (807) is connected to the bottom via a movable component. Multiple nozzles (808) are fixedly inserted into the bottom of the movable block (807), and the nozzles (808) are connected to the fixed cylinder (803) via a second connecting pipe (814). An installation rod (810) is fixedly connected to the bottom of the movable block (807), and a ball bearing (811) is provided at the bottom of the installation rod (810). A first vision sensor (809) is fixedly inserted into the bottom of the movable block (807), and two mounting brackets (812) are fixedly connected to the side wall of the movable block (807). Multiple second vision sensors (813) are fixedly inserted into the side wall of the mounting brackets (812), and an opening and closing component is provided on the side wall of the air supply pipe (711).

7. A container front crane according to claim 6, characterized in that: The movable component includes two symmetrically arranged second sleeves (1001) fixedly connected to the bottom of the connecting plate (712), and a second sleeve rod (1002) is inserted inside the second sleeve (1001). The lower end of the second sleeve rod (1002) is fixedly connected to a second connecting block (1004), and a fourth spring (1003) is sleeved on the side wall of each second sleeve (1001). Two third sleeves (1005) are fixedly connected to the side wall of the second connecting block (1004), and a third sleeve rod (1006) is inserted inside the third sleeve (1005). The other end of the third sleeve rod (1006) is fixed to the movable block (807), and each third sleeve (1005) is fixedly connected to the second connecting block (807). A fifth spring (1007) is sleeved on the side wall of the connecting plate (712). A strip-shaped opening (1008) is opened on the top of the connecting plate (712), and a slider (1009) is slidably connected in the strip-shaped opening (1008). The slider (1009) is fixed to the top of the moving block (807), and a push pin (1013) is fixedly connected to the top of the slider (1009). A push plate (1010) is fixedly connected to the top of the connecting plate (712), and a third sliding groove is opened on the side wall of the push plate (1010). The third sliding groove includes a vertical groove (1011) and an inclined groove (1012) connected end to end, and the push pin (1013) can slide in the third sliding groove.

8. A container front crane according to claim 6, characterized in that: The opening and closing assembly includes a mounting cover (901) fixedly inserted into the side wall of the air supply pipe (711), and a sliding plate (902) is slidably connected inside the mounting cover (901). The side wall of the sliding plate (902) is provided with a round hole (903), and a sixth spring (904) is fixedly connected between the sliding plate (902) and the mounting cover (901). An L-shaped push frame (905) is fixedly connected to the top of the sliding plate (902).

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