Hydraulic system of rescue boat lifting crane

Abstract

The utility model relates to the technical field of hydraulic control systems, in particular to a hydraulic system of a rescue boat hoisting crane, which comprises an oil tank, and is characterized in that supporting bottom feet are arranged at the bottom of the oil tank, a marine motor is arranged at the top of the oil tank, a lifting ring is arranged at the top of the marine motor, and an overflow valve is arranged on one side of the marine motor. According to the rescue boat hydraulic system, the four supporting bottom feet are arranged at the bottom of the oil tank at equal intervals, the installation stability of the hydraulic system on a rescue boat is guaranteed, the ship body can be effectively resisted from shaking and inclining, and system failure is avoided; the overflow valve and the hydraulic pump manual flow regulating valve are used in cooperation, the pressure and flow of a hydraulic system can be accurately controlled, overload or system faults are prevented, and operation safety is guaranteed; the temperature sensor and the temperature type liquid level meter can monitor the temperature and the liquid level of the hydraulic oil in real time.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control system technology, and in particular to a hydraulic system for a rescue boat crane. Background Technology

[0002] The rescue boat crane is a crucial piece of equipment in maritime rescue and ship operations. Its hydraulic system, as the core power source, directly impacts the crane's performance and reliability. However, traditional hydraulic systems suffer from the following problems in complex maritime environments: Insufficient stability: Ship swaying and tilting can easily lead to hydraulic system failure, affecting the crane's normal operation; Difficult monitoring and maintenance: Real-time monitoring of hydraulic oil temperature and level is difficult, leading to frequent oil contamination and leaks, increasing maintenance difficulty and costs; Insufficient emergency response capabilities: Lack of effective emergency procedures in the event of power failure or hydraulic pump malfunction affects rescue efficiency; Low space utilization: The large size of traditional hydraulic system oil tanks makes it difficult to adapt to the limited space requirements of rescue boats.

[0003] Chinese patent discloses a cryogenic hydraulic crane (publication number: CN 208648587 U), including a base plate, a base, a tower body with a driver's cab and pivotally connected to the base, a boom with a winch and hinged to the tower body, a hydraulic cylinder hinged to the tower body, a piston rod of the hydraulic cylinder hinged to the boom, a heat insulation cover with a heat insulation inner layer and a heating device located outside the winch, several boom guardrails with heating devices, tower body guardrails with heating devices, and a base annular platform with heating devices. However, this type of hydraulic crane is prone to system failure due to hull swaying and tilting, affecting the operation of the crane; monitoring and maintenance are difficult; hydraulic oil temperature and level are difficult to monitor in real time, oil contamination and leakage occur frequently, increasing maintenance difficulty and cost; in the event of power failure or hydraulic pump failure, there is a lack of effective emergency measures, affecting rescue efficiency; traditional oil tanks are large in size, making it difficult to adapt to the limited space requirements of rescue boats. Therefore, a hydraulic system for a rescue boat crane is needed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing hydraulic crane systems, such as the tendency for hull swaying and tilting to cause system failure, affecting crane operation; difficulties in monitoring and maintenance; difficulty in real-time monitoring of hydraulic oil temperature and level, leading to frequent oil contamination and leakage, increasing maintenance difficulty and cost; lack of effective emergency measures in the event of power failure or hydraulic pump failure, affecting rescue efficiency; and the large size of traditional oil tanks, which are difficult to adapt to the limited space requirements of rescue boats. Therefore, this utility model proposes a hydraulic system for a rescue boat crane.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The hydraulic system of the rescue boat crane of this utility model includes an oil tank, characterized in that: the bottom of the oil tank is provided with a support foot, the number of the support foot is 4 and arranged in an equally spaced array, the top of the oil tank is provided with a marine motor, the top of the marine motor is provided with a lifting ring, the distance between the lifting ring and the support foot is 1016mm, an overflow valve is provided on one side of the marine motor, an oil pump is provided at one end of the overflow valve, a hydraulic pump manual flow regulating valve is provided on one side of the overflow valve and cooperates with the overflow valve, a return oil filter is provided on one side of the overflow valve, one end of the return oil filter is provided with a hydraulic pump oil outlet, and the other end is provided with a return oil interface. The bottom of the oil tank is equipped with four equally spaced support feet to ensure the stability of the hydraulic system on the rescue boat and prevent system tilting or failure due to hull swaying. The distance between the lifting ring on the top of the motor and the support feet is 1016mm, which facilitates lifting and transportation and improves the efficiency of system installation and maintenance. The relief valve works with the oil pump to effectively control the pressure of the hydraulic system, prevent system overload, and ensure safety. The manual flow regulating valve of the hydraulic pump works with the relief valve to adjust the flow of hydraulic oil according to actual needs, improving the flexibility and precision of operation. The return oil filter connects the hydraulic pump outlet and return oil interface to filter impurities in the hydraulic oil and extend the service life of the hydraulic system.

[0006] Preferably, a temperature controller is provided on one side of the marine electric motor, and a temperature-type liquid level gauge is provided below the temperature controller. The temperature controller can monitor the temperature of the hydraulic oil in real time to prevent system failure or hydraulic oil deterioration caused by excessively high oil temperature; the temperature-type liquid level gauge can monitor the liquid level in the oil tank in real time to avoid hydraulic pump idling or system failure caused by excessively low liquid level, thus ensuring the reliability of system operation.

[0007] Preferably, an air filter is provided on one side of the top of the oil tank, a level controller is provided on one side of the air filter, and a drain port is provided on one side of the level controller. The air filter filters the air entering the oil tank, preventing dust and impurities from entering the hydraulic system and maintaining the cleanliness of the hydraulic oil; the level controller automatically controls the liquid level in the oil tank, ensuring that the hydraulic system is always in optimal working condition; the drain port facilitates quick drainage of hydraulic oil during maintenance, simplifying maintenance operations and improving the maintainability of the system.

[0008] Preferably, the front end of the oil tank is provided with a cleaning cover, which is provided with a plurality of hexagonal bolts. The number of hexagonal bolts is 8 to 12 and arranged in a circumferential array. An external hexagonal plug is provided on one side of the cleaning cover. The cleaning cover is fixed by hexagonal bolts, which facilitates disassembly and cleaning of the inside of the oil tank and ensures the long-term stable operation of the hydraulic system. The circumferential array of hexagonal bolts can evenly distribute the tightening force, ensuring the sealing of the cleaning cover and preventing hydraulic oil leakage. The external hexagonal plug facilitates the quick discharge of hydraulic oil during maintenance, simplifying maintenance operations.

[0009] Preferably, an emergency hand pump is provided on one side of the oil tank. Emergency protection: In the event of a power failure or hydraulic pump malfunction, the emergency hand pump can manually operate the hydraulic system, ensuring that the basic functions of the crane are not affected, thus improving the system's reliability and safety; the emergency hand pump also provides operators with a backup operating method, enhancing the system's adaptability.

[0010] Preferably, the oil tank has a length of 1000mm, a width of 550mm, and a height of 450mm. The oil tank's dimensions are reasonably designed, meeting the oil storage requirements of the hydraulic system while adapting to the space constraints of the rescue boat, thus improving the system's integration and practicality. The optimized dimensions also make the installation of the oil tank on the rescue boat more convenient and reduce the installation difficulty.

[0011] The advantages of this utility model are:

[0012] This application ensures the stability of the hydraulic system on the rescue boat by providing four equally spaced support feet at the bottom of the oil tank, effectively resisting hull swaying and tilting, and preventing system failure. The combined use of an overflow valve and a manual flow control valve for the hydraulic pump allows for precise control of the hydraulic system's pressure and flow, preventing overload or system malfunction and ensuring operational safety. A temperature controller and a temperature-type level gauge monitor the hydraulic oil temperature and level in real time, preventing system failures caused by excessively high or low oil temperatures and extending the hydraulic system's service life. The inclusion of an air filter and level controller ensures clean air and stable liquid levels inside the oil tank, reducing hydraulic oil contamination and system malfunctions. The design of the cleaning cap and external hexagonal plug facilitates cleaning of the oil tank interior and the hydraulic oil... The improved discharge system simplifies maintenance and enhances system maintainability. The emergency hand-cranked pump allows for manual operation of the hydraulic system in case of power failure or pump malfunction, ensuring the crane's basic functions remain unaffected and improving system reliability and adaptability. The combination of the hydraulic pump's manual flow control valve and relief valve provides flexible pressure and flow regulation to meet operational needs under different conditions. The optimized tank dimensions (1000mm long, 550mm wide, 450mm high) satisfy the hydraulic system's oil storage requirements while accommodating the space constraints of the rescue boat, enhancing system integration and practicality. The 1016mm distance between the lifting ring and the support feet facilitates lifting and transportation, improving system installation and maintenance efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a top view of the structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the right-side structure of this utility model.

[0017] In the diagram: 1. Cleaning cover; 2. Oil tank; 3. Support feet; 4. External hexagonal plug; 5. Temperature-type level gauge; 6. Temperature controller; 7. Marine electric motor; 8. Lifting ring; 9. Hydraulic pump manual flow control valve; 10. Emergency hand-cranked pump; 11. Drain port; 12. Level controller; 13. Air filter; 14. Return port; 15. Hydraulic pump outlet; 16. Relief valve; 17. Oil pump. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Example

[0020] Please see Figure 1-3 As shown, a hydraulic system for a rescue boat crane includes an oil tank 2. The oil tank 2 is characterized by: a support foot 3 at its bottom, with four support feet 3 arranged in an equally spaced array; a marine motor 7 at its top, with a lifting ring 8 at its top; a distance of 1016mm between the lifting ring 8 and the support foot 3; an overflow valve 16 on one side of the marine motor 7; an oil pump 17 at one end of the overflow valve 16; a hydraulic pump manual flow regulating valve 9 on one side of the overflow valve 16, cooperating with the overflow valve 16; and a return oil filter on one side of the overflow valve 16, with a hydraulic pump outlet 15 at one end and a return oil interface 14 at the other end. The bottom of the oil tank 2 is equipped with four equally spaced support feet 3 to ensure the stability of the hydraulic system installation on the rescue boat and prevent the system from tilting or failing due to hull swaying. The distance between the lifting ring 8 on the top of the motor and the support feet 3 is 1016mm, which facilitates lifting and transportation and improves the efficiency of system installation and maintenance. The relief valve 16 works with the oil pump 17 to effectively control the pressure of the hydraulic system, prevent system overload, and ensure safety. The hydraulic pump manual flow regulating valve 9 works with the relief valve 16 to adjust the flow of hydraulic oil according to actual needs, improving the flexibility and accuracy of operation. The return oil filter connects the hydraulic pump outlet 15 and the return oil interface 14 to filter impurities in the hydraulic oil and extend the service life of the hydraulic system.

[0021] In this embodiment, a temperature controller 6 is provided on one side of the marine electric motor 7, and a temperature-type liquid level gauge 5 is provided below the temperature controller 6. The temperature controller 6 can monitor the temperature of the hydraulic oil in real time to prevent system failure or hydraulic oil deterioration caused by excessively high oil temperature; the temperature-type liquid level gauge 5 can monitor the liquid level in the oil tank 2 in real time to avoid the hydraulic pump running dry or the system failing due to excessively low liquid level, thus ensuring the reliability of system operation.

[0022] In this embodiment, an air filter 13 is provided on one side of the top of the oil tank 2, a level controller 12 is provided on one side of the air filter 13, and an oil drain port 11 is provided on one side of the level controller 12. The air filter 13 can filter the air entering the oil tank 2, preventing dust and impurities from entering the hydraulic system and maintaining the cleanliness of the hydraulic oil; the level controller 12 can automatically control the liquid level in the oil tank 2, ensuring that the hydraulic system is always in the optimal working state; the oil drain port 11 facilitates the quick discharge of hydraulic oil during maintenance, simplifying maintenance operations and improving the maintainability of the system.

[0023] In this embodiment, a cleaning cover 1 is provided at the front end of the oil tank 2. The cleaning cover 1 has several hexagonal bolts, with 8 to 12 bolts arranged in a circular array. An external hexagonal plug 4 is provided on one side of the cleaning cover 1. The cleaning cover 1 is fixed by the hexagonal bolts, facilitating disassembly and cleaning of the inside of the oil tank 2, ensuring the long-term stable operation of the hydraulic system. The circular array of hexagonal bolts evenly distributes the tightening force, ensuring the sealing of the cleaning cover 1 and preventing hydraulic oil leakage. The external hexagonal plug 4 facilitates quick drainage of hydraulic oil during maintenance, simplifying maintenance operations.

[0024] In this embodiment, an emergency hand pump 10 is provided on one side of the oil tank 2. Emergency protection: In the event of a power failure or hydraulic pump failure, the emergency hand pump 10 can manually operate the hydraulic system, ensuring that the basic functions of the crane are not affected, thus improving the reliability and safety of the system; the emergency hand pump 10 provides operators with a backup operating method, enhancing the adaptability of the system.

[0025] In this embodiment, the oil tank 2 has a length of 1000mm, a width of 550mm, and a height of 450mm. The oil tank 2 is reasonably sized, meeting the oil storage requirements of the hydraulic system while adapting to the space constraints of the rescue boat, thus improving the system's integration and practicality. The optimized size design makes the installation of the oil tank 2 on the rescue boat more convenient and reduces the installation difficulty.

[0026] The implementation principle of this embodiment is as follows: When the hydraulic system needs to be started, the marine electric motor 7 starts working and drives the oil pump 17 to run. The oil pump 17 draws hydraulic oil from the oil tank 2 and delivers the hydraulic oil to the hydraulic actuator (such as a hydraulic cylinder or hydraulic motor) through the hydraulic pump outlet 15 to provide power for the crane.

[0027] During the operation of the hydraulic system, the relief valve 16 is used to control the system pressure. If the system pressure is too high, the relief valve 16 will automatically open to return the excess hydraulic oil to the oil tank 2 to prevent system overload. When it is necessary to adjust the flow rate of the hydraulic oil, the operator can manually adjust it through the hydraulic pump flow regulating valve 9 to ensure that the hydraulic system can operate stably under different working conditions.

[0028] After the hydraulic oil finishes its work, it returns to the oil tank 2 through the return port 14. During the return process, the return filter filters the hydraulic oil, removing impurities and contaminants to ensure its cleanliness and extend the system's service life. During hydraulic system operation, the temperature controller 6 monitors the hydraulic oil temperature in real time. If the oil temperature is too high, the system will issue an alarm to remind the operator to take cooling measures to prevent hydraulic oil deterioration or system malfunction. Simultaneously, the temperature-type level gauge 5 monitors the oil level in the oil tank 2. If the level is too low, the system will issue an alarm to remind the operator to replenish the hydraulic oil in time to avoid the hydraulic pump running dry or system failure.

[0029] When the hydraulic system is running, the air filter 13 filters the air entering the oil tank 2 to prevent dust and impurities from entering the hydraulic system and maintain the cleanliness of the hydraulic oil. Simultaneously, the level controller 12 automatically controls the level in the oil tank 2 to ensure the hydraulic system is always in optimal working condition. If the level is too high or too low, the level controller 12 will issue an alarm to remind the operator to make adjustments.

[0030] In the event of a power outage or hydraulic pump failure, operators can manually operate the hydraulic system using the emergency hand pump 10 to ensure that the basic functions of the crane are not affected. The emergency hand pump 10 provides a backup power source for the system, improving its reliability and safety.

[0031] When maintenance of the hydraulic system is required, the operator can remove the hex bolts on the cleaning cover 1, open the cleaning cover 1, and clean the inside of the oil tank 2 to ensure the long-term stable operation of the hydraulic system; when hydraulic oil needs to be drained, the operator can unscrew the external hex bolt plug 4 to quickly drain the hydraulic oil, simplifying the maintenance operation.

[0032] When the hydraulic level in tank 2 needs adjustment, the level controller 12 will automatically control the level to ensure stable operation of the hydraulic system. If the level is too high, the operator can quickly drain excess hydraulic oil through the drain port 11 to keep the level within a reasonable range.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hydraulic system for a rescue boat crane comprising an oil tank (2), characterized in that: The bottom of the oil tank (2) is provided with support feet (3), the number of support feet (3) is four and they are arranged in equidistant array, the top of the oil tank (2) is provided with a marine electric motor (7), the top of the marine electric motor (7) is provided with an eye (8), the distance between the eye (8) and the support feet (3) is 1016mm, one side of the marine electric motor (7) is provided with an overflow valve (16), one end of the overflow valve (16) is provided with an oil pump (17), one side of the overflow valve (16) is provided with a hydraulic pump manual flow regulating valve (9) and cooperates with the overflow valve (16), one side of the overflow valve (16) is provided with an oil return filter, one end of the oil return filter is provided with a hydraulic pump oil outlet (15) and the other end is provided with an oil return interface (14).

2. A hydraulic system for a rescue boat crane according to claim 1, characterized in that: One side of the marine electric motor (7) is provided with a temperature sensor, the lower side of the temperature controller (6) is provided with a temperature type liquid level meter (5).

3. A hydraulic system for a rescue boat crane according to claim 1, characterized in that: One side of the top of the oil tank (2) is provided with an air filter (13), one side of the air filter (13) is provided with a liquid level controller (12), one side of the liquid level controller (12) is provided with a drain interface (11).

4. A hydraulic system for a rescue boat crane according to claim 1, characterized in that: The front end of the oil tank (2) is provided with a cleaning cover (1), a plurality of hexagonal bolts are arranged on the cleaning cover (1), the number of hexagonal bolts is 8-12 and they are arranged in circumferential array, one side of the cleaning cover (1) is provided with an external hexagonal plug (4).

5. A hydraulic system for a rescue boat crane according to claim 1, characterized in that: One side of the oil tank (2) is provided with an emergency hand pump (10).

6. A hydraulic system for a rescue boat crane according to claim 1, characterized in that: The length of the oil tank (2) is 1000mm, the width is 550mm and the height is 450mm.

Images