Emergency hydraulic system for winch equipment

Abstract

The utility model 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 device breaks down, the emergency hydraulic system can be rapidly switched in and stably lowered under the action of damping of the hydraulic system and friction force of the winch device till the emergency hydraulic system stops.

Description

Technical Field

[0001] The present disclosure relates to the technical field of winch equipment, and in particular to an emergency hydraulic system for winch equipment. Background Art

[0002] In related technologies, the lifting and rotation systems of equipment in mines, amusement parks, and ski resorts are often implemented using a winch mechanism. 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 due to its own weight and load, causing personal injury and equipment damage, resulting in immeasurable losses. Utility Model Content

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

[0004] In order to achieve the above-mentioned object, the present disclosure provides an emergency hydraulic system for winch equipment, wherein the emergency hydraulic system for winch equipment includes an oil tank, a first hydraulic system, a transmission mechanism, a second hydraulic system and an oil circuit control system;

[0005] The first hydraulic system includes a first hydraulic drive component, a speed control circuit, a balancing valve, a first flow control valve, and an oil return circuit; the first hydraulic drive component is used for transmission connection with the power equipment of the winch equipment, and the first hydraulic drive component supplies oil to the speed control circuit through the oil tank, the balancing valve and the first flow control valve are both arranged in the speed control circuit, and the first flow control valve is arranged downstream of the balancing valve, the oil return circuit is connected to the speed control circuit and is located downstream of the first flow control valve, and the outlet of the oil return circuit is arranged in the oil tank;

[0006] The second hydraulic system includes a second hydraulic drive member, a second flow regulating valve, and a throttling circuit. The second hydraulic drive member is transmission-connected to the first hydraulic drive member via the transmission mechanism. The second hydraulic drive member supplies oil to a first port of the throttling circuit via the oil tank. A second port of the throttling circuit is connected to the oil return circuit. The second flow regulating valve is disposed in the throttling circuit.

[0007] The oil circuit control system includes a control oil circuit and a hydraulically controlled one-way valve, wherein the first port of the control oil circuit is connected to the throttling circuit, the second port of the control oil circuit is connected to the control oil port of the balancing valve, and the hydraulically controlled one-way valve is arranged in the control oil circuit.

[0008] 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;

[0009] One end of the first oil suction circuit is connected to the first oil port of the first hydraulic driving component, and the other end is disposed in the oil tank; one end of the second oil suction circuit is connected to the second oil port of the first hydraulic driving component, and the other end is disposed in the oil tank;

[0010] The first oil pressure circuit is connected to the first oil suction circuit and the speed control circuit, and the second oil pressure circuit is connected to the second oil suction circuit and the speed control circuit.

[0011] 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;

[0012] One end of the first overflow circuit is connected to the throttling circuit, and the other end is connected to the oil return circuit;

[0013] One end of the second overflow circuit is connected to the second oil pressure circuit, and the other end is connected to the oil return circuit;

[0014] One end of the third overflow circuit is connected to the throttling circuit, and the other end is connected to the oil return circuit;

[0015] The first hydraulic drive component and the second hydraulic drive component are configured as pumps or hydraulic pump-type hydraulic motors.

[0016] 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;

[0017] One end of the first control oil section is connected to the throttling circuit and is located upstream of the second flow regulating valve, and the other end is connected to the first control oil port of the hydraulically controlled one-way valve;

[0018] One end of the second control oil section is connected to the second control oil port of the hydraulically controlled one-way valve, and the other end is connected to the speed control circuit and is located upstream of the balancing valve;

[0019] One end of the third control oil section is communicated with the third control oil port of the hydraulically controlled one-way valve, and the other end is communicated with the control oil port of the balancing valve.

[0020] 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 oil return circuit.

[0021] Optionally, the first hydraulic system also includes a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve; the first one-way valve is arranged in the first oil suction circuit, the second one-way valve is arranged in the second oil suction circuit, the third one-way valve is arranged in the first oil pressure circuit, and the fourth one-way valve is arranged in the second oil pressure circuit.

[0022] Optionally, the first hydraulic system further includes a first stop valve and a second stop valve.

[0023] The first stop valve is provided in the first oil pressure circuit, and the first stop valve is provided between the first one-way valve and the third one-way valve;

[0024] The second stop valve is provided in the second oil pressure circuit, and the second stop valve is provided between the second one-way valve and the fourth one-way valve.

[0025] 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;

[0026] One end of the third oil suction circuit is connected to the first oil port of the second hydraulic driving component, and the other end is disposed in the oil tank. One end of the fourth oil suction circuit is connected to the second oil port of the second hydraulic driving component, and the other end is disposed in the oil tank.

[0027] 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.

[0028] Optionally, the second hydraulic system also includes a fifth one-way valve, a sixth one-way valve, a seventh one-way valve and an eighth one-way valve; the fifth one-way valve is arranged in the third oil suction circuit, the sixth one-way valve is arranged in the fourth oil suction circuit, the seventh one-way valve is arranged in the third oil pressure circuit, and the eighth one-way valve is arranged in the fourth oil pressure circuit.

[0029] Optionally, the first hydraulic system further includes a transmission member, and the first hydraulic driving member is connected to the power equipment through the transmission member;

[0030] Wherein, the transmission mechanism is configured as a deceleration 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.

[0031] In the above technical solution, the first hydraulic drive is connected to the power unit of the winch equipment. During normal operation, the first hydraulic drive rotates with the power unit and supplies oil to the speed control circuit. Initially, the hydraulic oil pressure is insufficient to open the counterbalance valve. The first and second hydraulic drives continue to rotate, and the hydraulic oil pressure in the first and second hydraulic systems increases accordingly. The initial pressure of the second hydraulic drive is set higher than that of the first hydraulic drive. The hydraulic oil in the control oil circuit is directed to the hydraulically controlled one-way valve and acts on the control oil port of the counterbalance valve. The hydraulic oil pumped by the first hydraulic drive passes through the counterbalance valve and flows through the first flow control valve back to the tank. After the speed control circuit is opened, the pressure in the first hydraulic system is determined by the first hydraulic drive and the first flow control valve.

[0032] In other words, the first pressure of the first hydraulic system is limited by the first hydraulic drive component, the balancing valve and the first flow regulating valve, and the second pressure of the second hydraulic system is limited by the second hydraulic drive component and the second flow regulating valve. The opening or closing of the hydraulically controlled one-way valve is achieved by utilizing the difference in pressure between the first pressure and the second pressure.

[0033] During normal operation, the first hydraulic system circuit remains unobstructed and the pressure is relatively stable.

[0034] When the winch's power unit fails, the winch's speed suddenly accelerates under its own weight. During acceleration, the rotational speeds of the first and second hydraulic drive components increase simultaneously, increasing the pressure in the first hydraulic system and the back pressure in the counterbalance valve. This pressure decreases the opening of the counterbalance valve, increasing the pressure at the front of the counterbalance valve. This increased pressure increases the resistance to rotation of the first hydraulic drive component, thus limiting the winch's acceleration.

[0035] At the same time, the flow through the first flow regulating valve becomes smaller, the back pressure of the balancing valve also becomes smaller, the opening increases again, and the flow capacity of the balancing valve increases again. However, due to the increase in back pressure, the opening of the balancing valve is generally getting smaller, and it is getting smaller gradually until it is closed, but the balancing valve is not completely closed immediately. The above actions occur at a high frequency.

[0036] 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 pilot pressure ratio of the hydraulically controlled one-way valve exceeds the circuit pressure of the second hydraulic drive component. The hydraulically controlled one-way valve passively closes, cutting off the oil supply to the control port of the balancing valve, and the circuit pressure of the first hydraulic drive component rapidly increases. This is particularly true for winch equipment: when the winch's power unit fails, the emergency hydraulic system of the present disclosure can quickly engage after the winch has initially accelerated, rapidly braking the winch to a stop through the effects of damping and its own friction.

[0037] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0039] Figure 1 FIG. 1 is a schematic diagram of an emergency hydraulic system for a winch device according to an embodiment of the present disclosure.

[0040] Description of Reference Numerals

[0041] 1. The first hydraulic system;

[0042] 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 control valve; 18. Transmission component; 19. Oil return circuit;

[0043] 1001, first one-way valve; 1002, second one-way valve; 1003, third one-way valve; 1004, fourth one-way valve; 1005, first stop valve; 1006, second stop valve;

[0044] 2. Transmission mechanism;

[0045] 3. Second hydraulic system;

[0046] 30. Second hydraulic drive element; 31. Control oil circuit; 311. First control oil section; 312. Second control oil section; 313. Third control oil section; 32. Hydraulic control check valve; 33. Throttle circuit; 34. First overflow circuit; 35. Second overflow circuit; 36. Third overflow circuit; 37. Third oil suction circuit; 38. Fourth oil suction circuit; 39. Third pressure oil circuit; 300. Fourth pressure oil circuit;

[0047] 301, second flow regulating valve; 302, first relief valve; 303, second relief valve; 304, third relief valve;

[0048] 3001, fifth one-way valve; 3002, sixth one-way valve; 3003, seventh one-way valve; 3004, eighth one-way valve; 3005, capillary internal leakage pipeline;

[0049] 4. Liquid level detector; 5. Temperature detector; 6. Air filter; 7. Oil return filter;

[0050] 100. Fuel tank;

[0051] 1000. Power equipment. DETAILED DESCRIPTION

[0052] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0053] In this disclosure, unless otherwise stated, directional words such as "inside" and "outside" refer to the inside and outside 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 sequentiality or importance.

[0054] Reference Figure 1 As shown, the present 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.

[0055] The first hydraulic system 1 includes a first hydraulic drive component 10, a speed control circuit 15, a balancing valve 16, a first flow control valve 17, and an oil return circuit 19. The first hydraulic drive component 10 is used for transmission connection with the power device 1000 of the winch equipment, and the first hydraulic drive component 10 supplies oil to the speed control circuit 15 through the oil tank 100. The balancing valve 16 and the first flow control valve 17 are both arranged in the speed control circuit 15, and the first flow control valve 17 is arranged downstream of the balancing valve 16. The oil return circuit 19 is connected to the speed control circuit 15 and is located downstream of the first flow control valve 17. The outlet of the oil return circuit 19 is arranged in the oil tank 100.

[0056] The second hydraulic system 3 includes a second hydraulic drive component 30, a second flow control valve 301, and a throttling circuit 33. The second hydraulic drive component 30 is in transmission connection with the first hydraulic drive component 10 via the transmission mechanism 2. The second hydraulic drive component 30 supplies oil to a first port of the throttling circuit 33 via the oil tank 100. The second port of the throttling circuit 33 is in communication with the oil return circuit 19. The second flow control valve 301 is disposed in the throttling circuit 33.

[0057] The oil circuit control system includes a control oil circuit 31 and a hydraulically controlled one-way 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 balancing valve 16 . The hydraulically controlled one-way valve 32 is arranged in the control oil circuit 31 .

[0058] In the above technical solution, the first hydraulic drive element 10 is connected to the power unit 1000 of the winch equipment. During normal operation, the first hydraulic drive element 10 rotates with the power unit 1000 and supplies oil to the speed control circuit 15. Initially, the hydraulic oil pressure is insufficient to open the counterbalance valve 16. The first and second hydraulic drive elements 10 and 30 continue to rotate, and the hydraulic oil pressure in the first and second hydraulic systems 1 and 3 increases accordingly. The initial pressure of the second hydraulic drive element 30 is set higher than that of the first hydraulic drive element 10. The hydraulic oil in the control oil circuit 31 flows through the hydraulically controlled check valve 32 and acts on the control oil port 161 of the counterbalance valve 16. The hydraulic oil pumped by the first hydraulic drive element 10 passes through the counterbalance valve 16 and flows through the first flow control valve 17 back to the oil tank 100. After the speed control circuit 15 is opened, the pressure in the first hydraulic system 1 is determined by the first hydraulic drive element 10 and the first flow control valve 17.

[0059] In other words, the first pressure of the first hydraulic system 1 is limited by the first hydraulic drive component 10, the balancing 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 component 30 and the second flow regulating valve 301. The opening or closing of the hydraulically controlled one-way valve 32 is achieved by utilizing the difference in pressure between the first pressure and the second pressure.

[0060] During normal operation, the circuit of the first hydraulic system 1 remains unobstructed and the pressure is relatively stable.

[0061] When the winch's power unit 1000 malfunctions, the winch's speed suddenly accelerates under its own weight. During acceleration, the rotational speeds of the first and second hydraulic actuators 10 and 30 increase simultaneously, increasing the pressure in the first hydraulic system 1 and, consequently, the back pressure in the counterbalance valve 16. This action reduces the opening of the counterbalance valve 16, increasing the pressure at the front of the counterbalance valve 16. This increased pressure increases the resistance to rotation of the first hydraulic actuator 10, thereby limiting the winch's acceleration.

[0062] At the same time, the flow through the first flow regulating valve 17 becomes smaller, the back pressure of the balancing valve 16 also becomes smaller, the opening increases again, and the flow capacity of the balancing valve 16 increases again. However, due to the increase in back pressure, the opening of the balancing valve 16 is generally getting smaller, and it is getting smaller gradually until it is closed, but the balancing valve 16 is not completely closed immediately. The above actions occur at a high frequency.

[0063] Furthermore, due to the transmission ratio of transmission mechanism 2, the speed increase of the first hydraulic drive element 10 is greater than that of the second hydraulic drive element 30. After the speed reaches a certain value, the product of the circuit pressure of the first hydraulic drive element 10 and the pressure ratio of the hydraulically controlled one-way valve 32 exceeds the circuit pressure of the second hydraulic drive element 30. The hydraulically controlled one-way valve 32 passively closes, cutting off the oil supply to the control oil port 161 of the balancing valve 16, and the circuit pressure of the first hydraulic drive element 10 rapidly increases. This is reflected in the winch equipment when the power unit 1000 of the winch equipment fails. After the winch initially accelerates, the emergency hydraulic system of the present disclosure can quickly engage and brake the winch to a stop through the effects of damping and its own friction.

[0064] 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 control circuit 15, and the second oil pressure circuit 14 connects the second oil suction circuit 12 and the speed control circuit 15.

[0065] When the power device 1000 rotates clockwise, the first hydraulic drive element 10 also moves clockwise. When the power device 1000 rotates counterclockwise, the first hydraulic drive element 10 also moves counterclockwise. Due to the provision of the first oil suction circuit 11, the second oil suction circuit 12, the first oil pressure circuit 13, and the second oil pressure circuit 14, hydraulic oil can be pumped to the speed control circuit 15 regardless of clockwise or counterclockwise rotation.

[0066] In one embodiment, reference Figure 1 As shown, the first hydraulic system 1 also 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 also 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 arranged in the first overflow circuit 34, the second overflow valve 303 is arranged in the second overflow circuit 35, and the third overflow valve 304 is arranged in the third overflow circuit 36.

[0067] In this embodiment, the first overflow valve 302 and the second overflow valve 303 are responsible for pressure buildup and overpressure protection of the circuit of the first hydraulic drive 10 , and the third overflow valve 304 is responsible for pressure buildup and overpressure protection of the circuit of the second hydraulic drive 30 .

[0068] In addition, regardless of whether the first hydraulic drive component 10 rotates clockwise or counterclockwise, it can ensure that the hydraulic oil flows to the control circuit composed of the first overflow valve 302, the second overflow valve 303, the balance valve 16, and the first flow regulating valve 17; regardless of whether the second hydraulic drive component 30 rotates clockwise or counterclockwise, it can ensure that the hydraulic oil flows to the control circuit composed of the second flow regulating valve 301 and the third overflow valve 304.

[0069] When the first hydraulic drive component 10 begins to rotate, the balancing valve 16 is closed, preventing hydraulic oil from flowing through the control circuit formed by the first relief valve 302, the second relief valve 303, the balancing valve 16, and the first flow control valve 17. As the first hydraulic drive component 10 continues to rotate, the second hydraulic drive component 30 builds pressure through the second flow control valve 301 and the third relief valve 304. This pressure is then opened by the hydraulically controlled check valve 32, allowing hydraulic oil to flow through the circuit of the first hydraulic drive component 10. At this point, the system pressure generated by the first hydraulic drive component 10 is lower than the system pressure generated by the second hydraulic drive component 30.

[0070] Optionally, the first hydraulic drive member 10 and the second hydraulic drive member 30 may be configured as pumps or hydraulic pump-type hydraulic motors, but the present disclosure does not limit the specific types of the first hydraulic drive member 10 and the second hydraulic drive member 30 .

[0071] In other embodiments, referring 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 control valve 301, and the other end is connected to the first control oil port of the hydraulically controlled one-way valve 32; one end of the second control oil circuit section 312 is connected to the second control oil port of the hydraulically controlled one-way valve 32, and the other end is connected to the speed control circuit 15 and is located upstream of the balancing valve 16; one end of the third control oil circuit section 313 is connected to the third control oil port of the hydraulically controlled one-way valve 32, and the other end is connected to the control oil port 161 of the balancing valve 16.

[0072] In addition, the control oil circuit 31 may further 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 of which is connected to the oil return circuit 19. The capillary internal leakage line 3005 can be used to relieve pressure from the balancing valve 16, gradually reducing the pressure in the balancing valve 16 and thus completely closing the balancing valve 16.

[0073] Optionally, refer to Figure 1 As shown, the second hydraulic system 3 further includes a third oil suction circuit 37, a fourth oil suction circuit 38, a third oil pressure circuit 39, and a fourth oil pressure circuit 300. One end of the third oil suction circuit 37 is connected to the first oil port of the second hydraulic drive component 30, and the other end is disposed in the oil tank 100. One end of the fourth oil suction circuit 38 is connected to the second oil port of the second hydraulic drive component 30, and the other end is disposed in the oil tank 100. The third oil pressure circuit 39 connects the third oil suction circuit 37 with the inlet of the throttling circuit 33, and the fourth oil pressure circuit 300 connects the fourth oil suction circuit 38 with the inlet of the throttling circuit 33. The provision of the third oil suction circuit 37, the fourth oil suction circuit 38, the third oil pressure circuit 39, and the fourth oil pressure circuit 300 ensures that hydraulic oil can be pumped regardless of whether the second hydraulic drive component 30 rotates clockwise or counterclockwise.

[0074] For example, when the second hydraulic driving component 30 rotates clockwise, the hydraulic oil sequentially passes through the third oil suction circuit 37, the first oil port and the second oil port of the second hydraulic driving component 30, and the fourth oil pressure circuit 300, thereby flowing into the throttling circuit 33. When the second hydraulic driving component 30 rotates counterclockwise, the hydraulic oil sequentially passes through the fourth oil suction circuit 38, the second oil port and the first oil port of the second hydraulic driving component 30, and the third oil pressure circuit 39, thereby flowing into the throttling circuit 33.

[0075] To avoid backflow problems, refer to Figure 1 As shown, the second hydraulic system 3 also includes a fifth one-way valve 3001, a sixth one-way valve 3002, a seventh one-way valve 3003 and an eighth one-way valve 3004; the fifth one-way valve 3001 is arranged in the third oil suction circuit 37, the sixth one-way valve 3002 is arranged in the fourth oil suction circuit 38, the seventh one-way valve 3003 is arranged in the third oil pressure circuit 39, and the eighth one-way valve 3004 is arranged in the fourth oil pressure circuit 300.

[0076] Similarly, to avoid backflow problems, refer to Figure 1 As shown, the first hydraulic system 1 also includes a first one-way valve 1001, a second one-way valve 1002, a third one-way valve 1003 and a fourth one-way valve 1004; the first one-way valve 1001 is arranged in the first oil suction circuit 11, the second one-way valve 1002 is arranged in the second oil suction circuit 12, the third one-way valve 1003 is arranged in the first oil pressure circuit 13, and the fourth one-way valve 1004 is arranged in the second oil pressure circuit 14.

[0077] In another embodiment, referring to Figure 1As shown, the first hydraulic system 1 further includes a first stop valve 1005 and a second stop valve 1006. The first stop valve 1005 is disposed in the first pressure oil circuit 13 and is disposed between the first check valve 1001 and the third check valve 1003. The second stop valve 1006 is disposed in the second pressure oil circuit 14 and is disposed between the second check valve 1002 and the fourth check valve 1004. The provision of the first stop valve 1005 and the second stop valve 1006 facilitates adjustment of the flow of the hydraulic oil. In addition, the first stop valve 1005 and the second stop valve 1006 can also serve to cut off the flow, facilitating maintenance of pipelines or components.

[0078] Optionally, refer to Figure 1 As shown, the first hydraulic system 1 further includes a transmission member 18, and the first hydraulic drive member 10 is used for transmission connection with the power equipment 1000 through the transmission member 18; wherein the above-mentioned transmission mechanism 2 is constructed as a reduction mechanism.

[0079] For example, the transmission mechanism 2 may include a pinion (not shown), a transmission chain (not shown), and a gear (not shown). The pinion is in transmission connection with the first hydraulic drive element 10, and the gear is in transmission connection with the second hydraulic drive element 30. The pinion and gear are connected by a transmission chain. The transmission mechanism 2 has a simple structure and stable drive. However, the present disclosure is not limited to the specific structural arrangement of the transmission mechanism 2, as long as it can achieve a deceleration effect.

[0080] The power device 1000 can be a power motor or a high-speed shaft of a winch reducer, and this disclosure does not limit this. Furthermore, the emergency hydraulic system for winch equipment can be used in mines, amusement parks, and ski resorts, and this disclosure does not limit the specific application scenario.

[0081] In addition, the first flow control valve 17 and the second flow control valve 301 are not limited to throttle valves. Valves with flow control functions such as proportional valves, ball valves, and flow valves all fall within the scope of protection.

[0082] Optionally, the emergency hydraulic system for the winch equipment also includes a liquid level detector 4 and a temperature detector 5. The liquid level detector 4 is arranged in the oil tank 100 to detect the amount of hydraulic oil therein, and the temperature detector 5 is arranged in the oil tank 100 to detect the temperature of the hydraulic oil therein.

[0083] Optionally, the emergency hydraulic system for the winch equipment further includes an air filter 6 and an oil return filter 7 . The air filter 6 is arranged at the top of the oil tank 100 , and the oil return filter 7 is arranged at the outlet of the speed control circuit 15 .

[0084] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within 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 scope of protection of the present disclosure.

[0085] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0086] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An emergency hydraulic system for a winch device, 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 component, a speed control circuit, a balancing valve, a first flow control valve, and an oil return circuit; the first hydraulic drive component is used for transmission connection with the power equipment of the winch equipment, and the first hydraulic drive component supplies oil to the speed control circuit through the oil tank, the balancing valve and the first flow control valve are both arranged in the speed control circuit, and the first flow control valve is arranged downstream of the balancing valve, the oil return circuit is connected to the speed control circuit and is located downstream of the first flow control valve, and the outlet of the oil return circuit is arranged in the oil tank; The second hydraulic system includes a second hydraulic drive member, a second flow regulating valve, and a throttling circuit. The second hydraulic drive member is transmission-connected to the first hydraulic drive member via the transmission mechanism. The second hydraulic drive member supplies oil to a first port of the throttling circuit via the oil tank. A second port of the throttling circuit is connected to the oil return circuit. The second flow regulating valve is disposed in the throttling circuit. The oil circuit control system includes a control oil circuit and a hydraulically controlled one-way valve, wherein the first port of the control oil circuit is connected to the throttling circuit, the second port of the control oil circuit is connected to the control oil port of the balancing valve, and the hydraulically controlled one-way valve is arranged 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 driving component, and the other end is disposed in the oil tank; one end of the second oil suction circuit is connected to the second oil port of the first hydraulic driving component, and the other end is disposed in the oil tank; The first oil pressure circuit is connected to the first oil suction circuit and the speed control circuit, and the second oil pressure circuit is connected to the second oil suction circuit and the speed control 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 oil return circuit; One end of the second overflow circuit is connected to the second oil pressure circuit, and the other end is connected to the oil return 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 section is connected to the throttling circuit and is located upstream of the second flow regulating valve, and the other end is connected to the first control oil port of the hydraulically controlled one-way valve; One end of the second control oil section is connected to the second control oil port of the hydraulically controlled one-way valve, and the other end is connected to the speed control circuit and is located upstream of the balancing valve; One end of the third control oil section is communicated with the third control oil port of the hydraulically controlled one-way valve, and the other end is communicated with the control oil port of the balancing valve.

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

6. The emergency hydraulic system for winch equipment according to claim 2, characterized in that: The first hydraulic system also includes a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve; the first one-way valve is arranged in the first oil suction circuit, the second one-way valve is arranged in the second oil suction circuit, the third one-way valve is arranged in the first oil pressure circuit, and the fourth one-way valve is arranged 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 further includes a first stop valve and a second stop valve, The first stop valve is provided in the first oil pressure circuit, and the first stop valve is provided between the first one-way valve and the third one-way valve; The second stop valve is provided in the second oil pressure circuit, and the second stop valve is provided between the second one-way valve and the fourth one-way valve.

8. The emergency hydraulic system for winch equipment according to any one of claims 1 to 7, characterized in that: 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 driving component, and the other end is disposed in the oil tank. One end of the fourth oil suction circuit is connected to the second oil port of the second hydraulic driving component, and the other end is disposed 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 also includes a fifth one-way valve, a sixth one-way valve, a seventh one-way valve and an eighth one-way valve; the fifth one-way valve is arranged in the third oil suction circuit, the sixth one-way valve is arranged in the fourth oil suction circuit, the seventh one-way valve is arranged in the third oil pressure circuit, and the eighth one-way valve is arranged in the fourth oil pressure circuit.

10. The emergency hydraulic system for winch equipment according to any one of claims 1 to 7, characterized in that: The first hydraulic system further includes a transmission member, and the first hydraulic driving member is used for transmission connection with the power equipment through the transmission member; Wherein, the transmission mechanism is configured as a deceleration 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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