Emergency hydraulic system for winch equipment

Abstract

The invention relates to an emergency hydraulic system for winch equipment. The emergency hydraulic system comprises an oil tank, a first hydraulic system, a transmission mechanism, a second hydraulic system and an oil way control system. The first hydraulic system comprises a first hydraulic driving part, a speed regulating loop, a balance valve, a first flow regulating valve and an oil return loop; the second hydraulic system comprises a second hydraulic driving part, a second flow regulating valve and a throttling loop; the oil way control system comprises a control oil way and a hydraulic control one-way valve, a first port of the control oil way is communicated with the throttling loop, a second port of the control oil way is communicated with the speed regulation loop, and the hydraulic control one-way valve is arranged on the control oil way and can supply oil to the control oil port of the balance valve. When a power device of the winch equipment breaks down, the emergency hydraulic system can be quickly switched in and stably lowered under the action of damping of the hydraulic system and friction force of the winch equipment until the emergency hydraulic system stops.

Description

Technical Field

[0001] This disclosure relates to the field of winch equipment technology, and more specifically, to an emergency hydraulic system for winch equipment. Background Technology

[0002] In related technologies, the lifting and rotation systems of equipment in mines, amusement parks, and ski resorts often use winch mechanisms. The motor provides power to the winch. When the motor fails or there is a problem with the power supply, the transmission system loses power, and the winch will accelerate its fall due to its own weight and load, causing personal injury and equipment damage, resulting in incalculable losses. Summary of the Invention

[0003] The purpose of this disclosure is to provide an emergency hydraulic system for winch equipment to solve the technical problems existing in the related art.

[0004] To achieve the above objectives, this disclosure provides an emergency hydraulic system for winch equipment, the emergency hydraulic system for winch equipment including an oil tank, a first hydraulic system, a transmission mechanism, a second hydraulic system, and an oil circuit control system; The first hydraulic system includes a first hydraulic drive unit, a speed control circuit, a balance valve, a first flow regulating valve, and a return oil circuit. The first hydraulic drive unit is used for transmission connection with the power unit of the winch equipment, and the first hydraulic drive unit supplies oil to the speed control circuit through the oil tank. The balance valve and the first flow regulating valve are both located in the speed control circuit, and the first flow regulating valve is located downstream of the balance valve. The return oil circuit is connected to the speed control circuit and is located downstream of the first flow regulating valve. The outlet of the return oil circuit is located in the oil tank. The second hydraulic system includes a second hydraulic drive component, a second flow regulating valve, and a throttling circuit. The second hydraulic drive component is connected to the first hydraulic drive component via the transmission mechanism. The second hydraulic drive component supplies oil to the first port of the throttling circuit through the oil tank. The second port of the throttling circuit is connected to the return oil circuit. The second flow regulating valve is located in the throttling circuit. The oil circuit control system includes a control oil circuit and a hydraulically controlled check valve. The first port of the control oil circuit is connected to the throttling circuit, and the second port of the control oil circuit is connected to the control port of the balance valve. The hydraulically controlled check valve is located in the control oil circuit.

[0005] Optionally, the first hydraulic system further includes a first oil suction circuit, a second oil suction circuit, a first oil pressure circuit, and a second oil pressure circuit; One end of the first oil suction circuit is connected to the first oil port of the first hydraulic drive, and the other end is located in the oil tank. One end of the second oil suction circuit is connected to the second oil port of the first hydraulic drive, and the other end is located in the oil tank. The first oil pressure circuit is connected to the first oil suction circuit and the speed regulation circuit, and the second oil pressure circuit is connected to the second oil suction circuit and the speed regulation circuit.

[0006] Optionally, the first hydraulic system further includes a first overflow circuit and a second overflow circuit; the second hydraulic system further includes a third overflow circuit. One end of the first overflow circuit is connected to the throttling circuit, and the other end is connected to the return oil circuit; One end of the second overflow circuit is connected to the second pressure oil circuit, and the other end is connected to the return oil circuit; One end of the third overflow circuit is connected to the throttling circuit, and the other end is connected to the oil return circuit; The first hydraulic drive component and the second hydraulic drive component are configured as pumps or hydraulic pump-type hydraulic motors.

[0007] Optionally, the control oil circuit includes a first control oil circuit section, a second control oil circuit section, and a third control oil circuit section; One end of the first control oil circuit is connected to the throttling circuit and located upstream of the second flow regulating valve, and the other end is connected to the first control oil port of the hydraulic check valve; One end of the second control oil circuit is connected to the second control oil port of the hydraulic check valve, and the other end is connected to the speed regulation circuit and located upstream of the balance valve; One end of the third control oil circuit is connected to the third control oil port of the hydraulic check valve, and the other end is connected to the control oil port of the balance valve.

[0008] Optionally, the control oil circuit further includes a capillary internal leakage pipeline, one end of which is connected to the third control oil circuit section, and the other end of which is connected to the return oil circuit.

[0009] Optionally, the first hydraulic system further includes a first check valve, a second check valve, a third check valve, and a fourth check valve; the first check valve is disposed in the first oil suction circuit, the second check valve is disposed in the second oil suction circuit, the third check valve is disposed in the first oil pressure circuit, and the fourth check valve is disposed in the second oil pressure circuit.

[0010] Optionally, the first hydraulic system further includes a first shut-off valve and a second shut-off valve. The first shut-off valve is located in the first oil pressure circuit, and the first shut-off valve is located between the first check valve and the third check valve; The second shut-off valve is located in the second oil pressure circuit, and is positioned between the second check valve and the fourth check valve.

[0011] Optionally, the second hydraulic system further includes a third oil suction circuit, a fourth oil suction circuit, a third oil pressure circuit, and a fourth oil pressure circuit; One end of the third oil suction circuit is connected to the first oil port of the second hydraulic drive, and the other end is located in the oil tank. One end of the fourth oil suction circuit is connected to the second oil port of the second hydraulic drive, and the other end is located in the oil tank. The third oil pressure circuit is connected to the third oil suction circuit and the throttling circuit, and the fourth oil pressure circuit is connected to the fourth oil suction circuit and the throttling circuit.

[0012] Optionally, the second hydraulic system further includes a fifth check valve, a sixth check valve, a seventh check valve, and an eighth check valve; the fifth check valve is disposed in the third suction circuit, the sixth check valve is disposed in the fourth suction circuit, the seventh check valve is disposed in the third pressure circuit, and the eighth check valve is disposed in the fourth pressure circuit.

[0013] Optionally, the first hydraulic system further includes a transmission component, through which the first hydraulic drive component is used for transmission connection with a power device; The transmission mechanism is configured as a speed reduction mechanism, and the first flow regulating valve and the second flow regulating valve include, but are not limited to, any one of a throttle valve, a proportional valve, a ball valve, and a flow valve.

[0014] In the above technical solution, the first hydraulic drive unit is connected to the power unit of the winch equipment. During normal operation, the first hydraulic drive unit rotates with the power unit and supplies oil to the speed control circuit. Initially, the hydraulic oil pressure is insufficient to open the balance valve. The first and second hydraulic drive units continue to rotate, and the hydraulic oil pressure in the first and second hydraulic systems increases accordingly. The initial pressure setting of the second hydraulic drive unit is higher than that of the first hydraulic drive unit. The hydraulic oil in the control oil circuit opens the hydraulic control check valve and acts on the control port of the balance valve. The hydraulic oil pumped by the first hydraulic drive unit passes through the balance valve and flows back to the oil tank through the first flow regulating valve. After the speed control circuit is activated, the pressure of the first hydraulic system is jointly determined by the first hydraulic drive unit and the first flow regulating valve.

[0015] In other words, the first pressure of the first hydraulic system is limited by the first hydraulic drive, the balance valve, and the first flow regulating valve, and the second pressure of the second hydraulic system is limited by the second hydraulic drive and the second flow regulating valve. The opening or closing of the hydraulic control check valve is achieved by utilizing the difference between the first pressure and the second pressure.

[0016] During normal operation, the first hydraulic system circuit remains unobstructed, and the pressure is relatively stable.

[0017] When the power unit of the winch malfunctions, the winch's operating speed suddenly accelerates under its own gravity. During acceleration, the speeds of the first and second hydraulic drive components increase simultaneously, and the pressure in the first hydraulic system also increases. At this time, the back pressure of the balance valve also increases. After this process, the opening of the balance valve decreases, and the pressure at the front end of the balance valve rises. As the pressure increases, the resistance to the rotation of the first hydraulic drive component increases, thereby limiting the winch's acceleration.

[0018] At the same time, as the flow rate through the first flow regulating valve decreases, the back pressure of the balancing valve also decreases, and the opening degree increases, thus increasing the flow capacity of the balancing valve. However, due to the increased back pressure, the opening degree of the balancing valve generally decreases, and gradually decreases until it closes. But the balancing valve does not immediately close completely. All of these actions occur at high frequency.

[0019] Furthermore, due to the transmission ratio of the transmission mechanism, the speed increase of the first hydraulic drive component is greater than that of the second hydraulic drive component. Once the speed reaches a certain value, the product of the circuit pressure of the first hydraulic drive component and the guide pressure ratio of the hydraulic check valve becomes higher than the circuit pressure of the second hydraulic drive component. This causes the hydraulic check valve to close passively, cutting off the oil supply to the control port of the balance valve, and the pressure in the circuit of the first hydraulic drive component rises rapidly. In winch equipment, this means that when the power unit of the winch fails, after the winch initially accelerates, the emergency hydraulic system disclosed herein can quickly engage and brake rapidly under the action of damping and its own friction until it stops.

[0020] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of an emergency hydraulic system for a winch device according to one embodiment of the present disclosure.

[0022] Explanation of reference numerals in the attached figures 1. First hydraulic system; 10. First hydraulic drive component; 11. First oil suction circuit; 12. Second oil suction circuit; 13. First oil pressure circuit; 14. Second oil pressure circuit; 15. Speed ​​control circuit; 16. Balance valve; 161. Control oil port; 17. First flow regulating valve; 18. Transmission component; 19. Return oil circuit; 1001, First check valve; 1002, Second check valve; 1003, Third check valve; 1004, Fourth check valve; 1005, First shut-off valve; 1006, Second shut-off valve; 2. Transmission mechanism; 3. Second hydraulic system; 30. Second hydraulic drive component; 31. Control oil circuit; 311. First control oil circuit section; 312. Second control oil circuit section; 313. Third control oil circuit section; 32. Hydraulic control check valve; 33. Throttling circuit; 34. First overflow circuit; 35. Second overflow circuit; 36. Third overflow circuit; 37. Third suction circuit; 38. Fourth suction circuit; 39. Third pressure circuit; 300. Fourth pressure circuit; 301. Second flow regulating valve; 302. First relief valve; 303. Second relief valve; 304. Third relief valve; 3001, Fifth Check Valve; 3002, Sixth Check Valve; 3003, Seventh Check Valve; 3004, Eighth Check Valve; 3005, Capillary Internal Leakage Pipeline; 4. Liquid level gauge; 5. Temperature gauge; 6. Air filter; 7. Oil return filter; 100. Fuel tank; 1000. Power unit. Detailed Implementation

[0023] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0024] In this disclosure, unless otherwise stated, directional terms such as “inner” and “outer” refer to the inner and outer parts of a specific structural outline, and terms such as “first” and “second” are used only to distinguish one element from another and do not have any sequential or important meaning.

[0025] Reference Figure 1 As shown, this disclosure provides an emergency hydraulic system for winch equipment, which includes an oil tank 100, a first hydraulic system 1, a transmission mechanism 2, a second hydraulic system 3, and an oil circuit control system.

[0026] The first hydraulic system 1 includes a first hydraulic drive unit 10, a speed control circuit 15, a balance valve 16, a first flow regulating valve 17, and a return oil circuit 19. The first hydraulic drive unit 10 is used to drive the power unit 1000 of the winch equipment, and the first hydraulic drive unit 10 supplies oil to the speed control circuit 15 through the oil tank 100. The balance valve 16 and the first flow regulating valve 17 are both located in the speed control circuit 15, and the first flow regulating valve 17 is located downstream of the balance valve 16. The return oil circuit 19 is connected to the speed control circuit 15 and is located downstream of the first flow regulating valve 17. The outlet of the return oil circuit 19 is located in the oil tank 100. The second hydraulic system 3 includes a second hydraulic drive 30, a second flow regulating valve 301, and a throttling circuit 33. The second hydraulic drive 30 is connected to the first hydraulic drive 10 via a transmission mechanism 2. The second hydraulic drive 30 supplies oil to the first port of the throttling circuit 33 through the oil tank 100. The second port of the throttling circuit 33 is connected to the return oil circuit 19. The second flow regulating valve 301 is located in the throttling circuit 33. The oil circuit control system includes a control oil circuit 31 and a hydraulic control check valve 32. The first port of the control oil circuit 31 is connected to the throttling circuit 33, and the second port of the control oil circuit 31 is connected to the control oil port 161 of the balance valve 16. The hydraulic control check valve 32 is located in the control oil circuit 31.

[0027] In the above technical solution, the first hydraulic drive unit 10 is connected to the power unit 1000 of the winch equipment. During normal operation, the first hydraulic drive unit 10 rotates with the power unit 1000 and supplies oil to the speed control circuit 15. In the initial stage, the pressure of the hydraulic oil is insufficient to open the balance valve 16. The first hydraulic drive unit 10 and the second hydraulic drive unit 30 continue to rotate, and the hydraulic oil pressure of the first hydraulic system 1 and the second hydraulic system 3 increases accordingly. The initial pressure setting of the second hydraulic drive unit 30 is higher than that of the first hydraulic drive unit 10. The hydraulic oil in the control oil circuit 31 is connected to the hydraulic control check valve 32 and acts on the control port 161 of the balance valve 16. The hydraulic oil pumped by the first hydraulic drive unit 10 passes through the balance valve 16 and flows back to the oil tank 100 through the first flow regulating valve 17. After the speed control circuit 15 is turned on, the pressure of the first hydraulic system 1 is determined by the first hydraulic drive unit 10 and the first flow regulating valve 17.

[0028] In other words, the first pressure of the first hydraulic system 1 is limited by the first hydraulic drive 10, the balance valve 16 and the first flow regulating valve 17, and the second pressure of the second hydraulic system 3 is limited by the second hydraulic drive 30 and the second flow regulating valve 301. The opening or closing of the hydraulic control check valve 32 is achieved by utilizing the difference between the first pressure and the second pressure.

[0029] During normal operation, the first hydraulic system circuit 1 remains unobstructed, and the pressure is relatively stable.

[0030] When the power unit 1000 of the winch equipment malfunctions, the winch's running speed suddenly accelerates under its own gravity. During acceleration, the rotational speeds of the first hydraulic drive component 10 and the second hydraulic drive component 30 increase simultaneously, and the pressure of the first hydraulic system 1 also increases. At this time, the back pressure of the balance valve 16 also increases. After this process, the opening of the balance valve 16 decreases, and the pressure at the front end of the balance valve 16 rises accordingly. As the pressure increases, the resistance to the rotation of the first hydraulic drive component 10 increases, thereby limiting the acceleration of the winch equipment.

[0031] At the same time, as the flow rate of the first flow regulating valve 17 decreases, the back pressure of the balancing valve 16 also decreases, and the opening degree increases, thus increasing the flow capacity of the balancing valve 16. However, due to the increased back pressure, the opening degree of the balancing valve 16 generally decreases, and gradually decreases until it closes. But the balancing valve 16 does not close completely immediately. All of the above actions occur at high frequency.

[0032] Furthermore, due to the transmission ratio of the transmission mechanism 2, the speed increase of the first hydraulic drive component 10 is greater than that of the second hydraulic drive component 30. After the speed reaches a certain value, the product of the circuit pressure of the first hydraulic drive component 10 and the guide pressure ratio of the hydraulic control check valve 32 is higher than the circuit pressure of the second hydraulic drive component 30. The hydraulic control check valve 32 is passively closed, cutting off the oil supply to the control port 161 of the balance valve 16, and the pressure in the circuit of the first hydraulic drive component 10 rises rapidly. In winch equipment, this means that when the power unit 1000 of the winch equipment fails, after the winch initially accelerates, the emergency hydraulic system of this disclosure can quickly engage and brake rapidly under the action of damping and its own friction until it stops.

[0033] Optionally, refer to Figure 1 As shown, the first hydraulic system 1 further includes a first oil suction circuit 11, a second oil suction circuit 12, a first oil pressure circuit 13, and a second oil pressure circuit 14. One end of the first oil suction circuit 11 is connected to the first oil port of the first hydraulic drive component 10, and the other end is disposed in the oil tank 100. One end of the second oil suction circuit 12 is connected to the second oil port of the first hydraulic drive component 10, and the other end is disposed in the oil tank 100. The first oil pressure circuit 13 connects the first oil suction circuit 11 and the speed regulation circuit 15, and the second oil pressure circuit 14 connects the second oil suction circuit 12 and the speed regulation circuit 15.

[0034] When the power unit 1000 rotates clockwise, the first hydraulic drive component 10 also rotates clockwise; when the power unit 1000 rotates counterclockwise, the first hydraulic drive component 10 also rotates counterclockwise. Because it is equipped with a first oil suction circuit 11, a second oil suction circuit 12, a first oil pressure circuit 13, and a second oil pressure circuit 14, hydraulic oil can be pumped to the speed control circuit 15 regardless of whether the rotation is clockwise or counterclockwise.

[0035] In one implementation, reference Figure 1 As shown, the first hydraulic system 1 further includes a first overflow circuit 34, a second overflow circuit 35, a first overflow valve 302, and a second overflow valve 303; the second hydraulic system 3 further includes a third overflow circuit 36 ​​and a third overflow valve 304; one end of the first overflow circuit 34 is connected to the throttling circuit 33, and the other end is connected to the first pressure oil circuit 13; one end of the second overflow circuit 35 is connected to the first overflow circuit 34, and the other end is connected to the second pressure oil circuit 14; one end of the third overflow circuit 36 ​​is connected to the throttling circuit 33, and the other end is connected to the first overflow circuit 34; wherein, the first overflow valve 302 is disposed in the first overflow circuit 34, the second overflow valve 303 is disposed in the second overflow circuit 35, and the third overflow valve 304 is disposed in the third overflow circuit 36.

[0036] In this embodiment, the first relief valve 302 and the second relief valve 303 are responsible for the pressure establishment and overpressure protection of the circuit of the first hydraulic drive 10, and the third relief valve 304 is responsible for the pressure establishment and overpressure protection of the circuit of the second hydraulic drive 30.

[0037] In addition, regardless of whether the first hydraulic drive 10 rotates clockwise or counterclockwise, it ensures that hydraulic oil flows to the control circuit consisting of the first relief valve 302, the second relief valve 303, the balance valve 16, and the first flow regulating valve 17; and regardless of whether the second hydraulic drive 30 rotates clockwise or counterclockwise, it ensures that hydraulic oil flows to the control circuit consisting of the second flow regulating valve 301 and the third relief valve 304.

[0038] When the first hydraulic actuator 10 begins to rotate, the balance valve 16 is closed, preventing hydraulic oil from flowing through the control circuit consisting of the first relief valve 302, the second relief valve 303, the balance valve 16, and the first flow regulating valve 17. As the first hydraulic actuator 10 continues to rotate, the second hydraulic actuator 30 builds pressure through the second flow regulating valve 301 and the third relief valve 304. This pressure is then released through the hydraulically controlled check valve 32, opening the balance valve 16 and allowing hydraulic oil to flow through the first hydraulic actuator 10 circuit. At this point, the system pressure generated by the first hydraulic actuator 10 is lower than the system pressure generated by the second hydraulic actuator 30.

[0039] Optionally, the first hydraulic drive 10 and the second hydraulic drive 30 described above can be configured as a pump or a hydraulic pump type hydraulic motor, but this disclosure does not limit the specific type of the first hydraulic drive 10 and the second hydraulic drive 30.

[0040] In other implementations, refer to Figure 1 As shown, the control oil circuit 31 includes a first control oil circuit section 311, a second control oil circuit section 312, and a third control oil circuit section 313. One end of the first control oil circuit section 311 is connected to the throttling circuit 33 and is located upstream of the second flow regulating valve 301, while the other end is connected to the first control port of the hydraulic check valve 32. One end of the second control oil circuit section 312 is connected to the second control port of the hydraulic check valve 32, while the other end is connected to the speed regulating circuit 15 and is located upstream of the balance valve 16. One end of the third control oil circuit section 313 is connected to the third control port of the hydraulic check valve 32, while the other end is connected to the control port 161 of the balance valve 16.

[0041] Additionally, the control oil circuit 31 may also include a capillary internal leakage line 3005, one end of which is connected to the third control oil circuit section 313, and the other end is connected to the return oil circuit 19. This capillary internal leakage line 3005 can be used to relieve pressure on the balance valve 16, causing the pressure of the balance valve 16 to gradually decrease, thereby causing the balance valve 16 to close completely.

[0042] Optionally, refer to Figure 1 As shown, the second hydraulic system 3 also includes a third suction circuit 37, a fourth suction circuit 38, a third pressure circuit 39, and a fourth pressure circuit 300. One end of the third suction circuit 37 is connected to the first oil port of the second hydraulic drive unit 30, and the other end is located in the oil tank 100. One end of the fourth suction circuit 38 is connected to the second oil port of the second hydraulic drive unit 30, and the other end is located in the oil tank 100. The third pressure circuit 39 connects the third suction circuit 37 and the inlet of the throttling circuit 33, and the fourth pressure circuit 300 connects the fourth suction circuit 38 and the inlet of the throttling circuit 33. By setting up the third suction circuit 37, the fourth suction circuit 38, the third pressure circuit 39, and the fourth pressure circuit 300, it can be ensured that hydraulic oil can be pumped regardless of whether the second hydraulic drive unit 30 rotates clockwise or counterclockwise.

[0043] For example, when the second hydraulic drive unit 30 rotates clockwise, the hydraulic oil flows sequentially through the third suction circuit 37, the first and second ports of the second hydraulic drive unit 30, and the fourth pressure circuit 300, thus flowing into the throttling circuit 33. When the second hydraulic drive unit 30 rotates counterclockwise, the hydraulic oil flows sequentially through the fourth suction circuit 38, the second and first ports of the second hydraulic drive unit 30, and the third pressure circuit 39, thus flowing into the throttling circuit 33.

[0044] To avoid backflow issues, refer to Figure 1 As shown, the second hydraulic system 3 also includes a fifth check valve 3001, a sixth check valve 3002, a seventh check valve 3003, and an eighth check valve 3004; the fifth check valve 3001 is located in the third suction circuit 37, the sixth check valve 3002 is located in the fourth suction circuit 38, the seventh check valve 3003 is located in the third pressure circuit 39, and the eighth check valve 3004 is located in the fourth pressure circuit.

[0045] Similarly, to avoid backflow issues, refer to Figure 1 As shown, the first hydraulic system 1 also includes a first check valve 1001, a second check valve 1002, a third check valve 1003, and a fourth check valve 1004; the first check valve 1001 is disposed in the first oil suction circuit 11, the second check valve 1002 is disposed in the second oil suction circuit 12, the third check valve 1003 is disposed in the first oil pressure circuit 13, and the fourth check valve 1004 is disposed in the second oil pressure circuit 14.

[0046] In another embodiment, refer to Figure 1 As shown, the first hydraulic system 1 also includes a first shut-off valve 1005 and a second shut-off valve 1006. The first shut-off valve 1005 is located in the first oil pressure circuit 13 and is positioned between the first check valve 1001 and the third check valve 1003. The second shut-off valve 1006 is located in the second oil pressure circuit 14 and is positioned between the second check valve 1002 and the fourth check valve 1004. By setting the first shut-off valve 1005 and the second shut-off valve 1006, the flow rate of the hydraulic oil can be easily adjusted. In addition, the first shut-off valve 1005 and the second shut-off valve 1006 can also cut off the flow, facilitating maintenance of pipelines or components.

[0047] Optionally, refer to Figure 1 As shown, the first hydraulic system 1 also includes a transmission component 18, and the first hydraulic drive component 10 is used to drive the power unit 1000 through the transmission component 18; wherein, the aforementioned transmission mechanism 2 is constructed as a reduction mechanism.

[0048] For example, the transmission mechanism 2 may include a pinion (not shown), a transmission chain (not shown), and a large gear (not shown). The pinion is connected to the first hydraulic drive component 10, and the large gear is connected to the second hydraulic drive component 30. The pinion and the large gear are connected by the transmission chain. This transmission mechanism 2 has a simple structure and stable drive. However, this disclosure does not limit the specific structural arrangement of the transmission mechanism 2, as long as it can achieve the effect of deceleration.

[0049] The aforementioned power unit 1000 can be a power motor or a high-speed shaft of a winch reducer; this disclosure does not limit its application. Furthermore, the aforementioned emergency hydraulic system for winch equipment can be applied in mines, amusement parks, and ski resorts; this disclosure does not limit its specific application scenarios.

[0050] In addition, the first flow regulating valve 17 and the second flow regulating valve 301 mentioned above are not limited to throttle valves. Valves with flow regulating functions, such as proportional valves, ball valves, and flow valves, are all included in the protection scope.

[0051] Optionally, the emergency hydraulic system for the winch equipment also includes a level gauge 4 and a temperature gauge 5. The level gauge 4 is installed in the oil tank 100 to detect the amount of hydraulic oil inside, and the temperature gauge 5 is installed in the oil tank 100 to detect the temperature of the hydraulic oil inside.

[0052] Optionally, the emergency hydraulic system for the winch equipment also includes an air filter 6 and a return oil filter 7, with the air filter 6 located at the top of the oil tank 100 and the return oil filter 7 located at the outlet of the speed control circuit 15.

[0053] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0055] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An emergency hydraulic system for winch equipment, characterized in that, The emergency hydraulic system for the winch equipment includes an oil tank, a first hydraulic system, a transmission mechanism, a second hydraulic system, and an oil circuit control system. The first hydraulic system includes a first hydraulic drive unit, a speed control circuit, a balance valve, a first flow regulating valve, and a return oil circuit. The first hydraulic drive unit is used for transmission connection with the power unit of the winch equipment, and the first hydraulic drive unit supplies oil to the speed control circuit through the oil tank. The balance valve and the first flow regulating valve are both located in the speed control circuit, and the first flow regulating valve is located downstream of the balance valve. The return oil circuit is connected to the speed control circuit and is located downstream of the first flow regulating valve. The outlet of the return oil circuit is located in the oil tank. The second hydraulic system includes a second hydraulic drive component, a second flow regulating valve, and a throttling circuit. The second hydraulic drive component is connected to the first hydraulic drive component via the transmission mechanism. The second hydraulic drive component supplies oil to the first port of the throttling circuit through the oil tank. The second port of the throttling circuit is connected to the return oil circuit. The second flow regulating valve is located in the throttling circuit. The oil circuit control system includes a control oil circuit and a hydraulically controlled check valve. The first port of the control oil circuit is connected to the throttling circuit, and the second port of the control oil circuit is connected to the control port of the balance valve. The hydraulically controlled check valve is located in the control oil circuit.

2. The emergency hydraulic system for winch equipment according to claim 1, characterized in that, The first hydraulic system further includes a first oil suction circuit, a second oil suction circuit, a first oil pressure circuit, and a second oil pressure circuit; One end of the first oil suction circuit is connected to the first oil port of the first hydraulic drive, and the other end is located in the oil tank. One end of the second oil suction circuit is connected to the second oil port of the first hydraulic drive, and the other end is located in the oil tank. The first oil pressure circuit is connected to the first oil suction circuit and the speed regulation circuit, and the second oil pressure circuit is connected to the second oil suction circuit and the speed regulation circuit.

3. The emergency hydraulic system for winch equipment according to claim 2, characterized in that, The first hydraulic system further includes a first overflow circuit and a second overflow circuit; the second hydraulic system further includes a third overflow circuit; One end of the first overflow circuit is connected to the throttling circuit, and the other end is connected to the return oil circuit; One end of the second overflow circuit is connected to the second pressure oil circuit, and the other end is connected to the return oil circuit; One end of the third overflow circuit is connected to the throttling circuit, and the other end is connected to the oil return circuit; The first hydraulic drive component and the second hydraulic drive component are configured as pumps or hydraulic pump-type hydraulic motors.

4. The emergency hydraulic system for winch equipment according to claim 3, characterized in that, The control oil circuit includes a first control oil circuit section, a second control oil circuit section, and a third control oil circuit section; One end of the first control oil circuit is connected to the throttling circuit and located upstream of the second flow regulating valve, and the other end is connected to the first control oil port of the hydraulic check valve; One end of the second control oil circuit is connected to the second control oil port of the hydraulic check valve, and the other end is connected to the speed regulation circuit and located upstream of the balance valve; One end of the third control oil circuit is connected to the third control oil port of the hydraulic check valve, and the other end is connected to the control oil port of the balance valve.

5. The emergency hydraulic system for winch equipment according to claim 4, characterized in that, The control oil circuit also includes a capillary internal leakage pipeline, one end of which is connected to the third control oil circuit section and the other end of which is connected to the return oil circuit.

6. The emergency hydraulic system for winch equipment according to claim 2, characterized in that, The first hydraulic system further includes a first check valve, a second check valve, a third check valve, and a fourth check valve; the first check valve is disposed in the first oil suction circuit, the second check valve is disposed in the second oil suction circuit, the third check valve is disposed in the first oil pressure circuit, and the fourth check valve is disposed in the second oil pressure circuit.

7. The emergency hydraulic system for winch equipment according to claim 6, characterized in that, The first hydraulic system also includes a first shut-off valve and a second shut-off valve. The first shut-off valve is located in the first oil pressure circuit, and the first shut-off valve is located between the first check valve and the third check valve; The second shut-off valve is located in the second oil pressure circuit, and is located between the second check valve and the fourth check valve.

8. The emergency hydraulic system for winch equipment according to any one of claims 1-7, characterized in that, The second hydraulic system also includes a third oil suction circuit, a fourth oil suction circuit, a third oil pressure circuit, and a fourth oil pressure circuit; One end of the third oil suction circuit is connected to the first oil port of the second hydraulic drive, and the other end is located in the oil tank. One end of the fourth oil suction circuit is connected to the second oil port of the second hydraulic drive, and the other end is located in the oil tank. The third oil pressure circuit is connected to the third oil suction circuit and the throttling circuit, and the fourth oil pressure circuit is connected to the fourth oil suction circuit and the throttling circuit.

9. The emergency hydraulic system for winch equipment according to claim 8, characterized in that, The second hydraulic system further includes a fifth check valve, a sixth check valve, a seventh check valve, and an eighth check valve; the fifth check valve is located in the third suction circuit, the sixth check valve is located in the fourth suction circuit, the seventh check valve is located in the third pressure circuit, and the eighth check valve is located in the fourth pressure circuit.

10. The emergency hydraulic system for winch equipment according to any one of claims 1-7, characterized in that, The first hydraulic system further includes a transmission component, and the first hydraulic drive component is used to drive the power device through the transmission component; The transmission mechanism is configured as a speed reduction mechanism, and the first flow regulating valve and the second flow regulating valve include, but are not limited to, any one of a throttle valve, a proportional valve, a ball valve, and a flow valve.

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