Lifting hydraulic system and vehicle

Abstract

The utility model provides a kind of lifting hydraulic system and vehicle.The lifting hydraulic system includes at least one lifting cylinder, oil storage device, for the intercommunication oil storage device and lifting cylinder's lifting pipeline, and the lifting hydraulic system further includes: first rescue pipeline, one end of first rescue pipeline is communicated with lifting pipeline, and the other end of first rescue pipeline forms first rescue interface;The end close to lifting cylinder of lifting pipeline is provided with second stop valve, and second stop valve is used to control the on-off state between lifting pipeline and lifting cylinder;The end close to oil storage device of lifting pipeline is provided with third stop valve, and third stop valve is used to control the on-off state between lifting pipeline and oil storage device.The lifting hydraulic system of the embodiment realizes the emergency lifting of vehicle, is convenient for subsequent maintenance or spare part replacement inside vehicle frame, or timely unloading when vehicle is overloaded operation to carry out subsequent maintenance, solves the problem of inconvenient maintenance caused by the fact that cargo box cannot be lifted in the prior art.

Description

Technical Field

[0001] This utility model relates to the fields of smart mining and vehicle technology, and more specifically, to a lifting hydraulic system and a vehicle. Background Technology

[0002] Domestic and international mining trucks or wide-body vehicles frequently require maintenance or replacement of internal chassis components, such as gearboxes, pumps, valves, wiring harnesses, and piping. If the cargo box cannot be raised during these procedures, repairing or replacing large components becomes extremely inconvenient. Furthermore, when a vehicle malfunctions under heavy load, the cargo box must be unloaded for on-site repairs or return to a repair shop. If the vehicle cannot be raised, this will hinder the repair process.

[0003] There is currently no effective solution to the problem of inconvenient maintenance caused by the inability to lift the cargo box. Utility Model Content

[0004] The main purpose of this utility model is to provide a lifting hydraulic system and vehicle to solve the problem of inconvenient maintenance caused by the inability to lift the cargo box in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a lifting hydraulic system is provided, comprising at least one lifting cylinder, an oil reservoir, and a lifting pipeline for connecting the oil reservoir and the lifting cylinder. The lifting hydraulic system further comprises: a first rescue pipeline, one end of which is connected to the lifting pipeline, and the other end of which forms a first rescue interface; a second shut-off valve is provided at the end of the lifting pipeline near the lifting cylinder, the second shut-off valve being used to control the on / off state between the lifting pipeline and the lifting cylinder; and a third shut-off valve is provided at the end of the lifting pipeline near the oil reservoir, the third shut-off valve being used to control the on / off state between the lifting pipeline and the oil reservoir.

[0006] Furthermore, a lifting valve is installed on the lifting pipeline, and a third shut-off valve is located between the connection point of the first rescue pipeline and the lifting pipeline and the lifting valve.

[0007] Furthermore, the lifting hydraulic system also includes a second rescue pipeline. One end of the second rescue pipeline is connected to the oil storage device, and the other end forms a second rescue interface. The second rescue pipeline cooperates with the first rescue pipeline to form a partial rescue lifting oil circuit. In emergency rescue mode, both the first and second rescue interfaces are connected to external rescue equipment. The first and second rescue interfaces cooperate with the external rescue equipment to form a complete rescue lifting oil circuit. The oil in the oil storage device enters the external rescue equipment through the second rescue pipeline, and then enters the lifting cylinder through the first rescue pipeline to realize the lifting action. Among them, one end of the second rescue pipeline is connected to the end of the lifting pipeline closest to the oil storage device, and the second rescue pipeline is connected to the oil storage device through the lifting pipeline.

[0008] Furthermore, the lifting hydraulic system also includes a third rescue pipeline. One end of the third rescue pipeline is connected to the oil storage device via a return oil pipeline, and the other end of the third rescue pipeline forms a third rescue interface. The third rescue interface cooperates with the first rescue pipeline to form a partial rescue descent oil circuit. In emergency rescue mode, both the first and third rescue interfaces are connected to external rescue equipment. The first and third rescue interfaces cooperate with the external rescue equipment to form a complete rescue descent oil circuit. The oil in the lifting cylinder enters the external rescue equipment through the first rescue pipeline and then returns to the oil storage device through the third rescue pipeline to realize the descent action.

[0009] Furthermore, a fourth shut-off valve is installed on the second rescue pipeline, which is used to control the on / off state of the second rescue pipeline.

[0010] Furthermore, a fifth shut-off valve is installed on the third rescue pipeline, which is used to control the on / off state of the third rescue pipeline.

[0011] Furthermore, one end of the second rescue pipeline is connected to the end of the lifting pipeline near the oil storage device, and the second rescue pipeline is connected to the oil storage device through the lifting pipeline.

[0012] Furthermore, the return oil end of the lifting valve is connected to the oil storage device through the return oil pipeline, and the third rescue pipeline is connected to the return oil pipeline. The third rescue pipeline is connected to the oil storage device through the return oil pipeline.

[0013] Furthermore, a sixth shut-off valve is installed at the end of the return oil pipeline near the oil storage device. The sixth shut-off valve is used to control the on / off state between the return oil pipeline and the oil storage device.

[0014] Furthermore, a first shut-off valve is installed on the first rescue pipeline, which is used to control the on / off state of the first rescue pipeline.

[0015] According to another aspect of the present invention, a vehicle is provided having a lifting hydraulic system, which is the lifting hydraulic system described above.

[0016] By applying the technical solution of this utility model, the second shut-off valve can cut off the connection between the lifting cylinder and the vehicle's own hydraulic system, preventing the oil from flowing into different systems and ensuring the safety and reliability of the emergency lifting process. It also avoids oil waste and system contamination. By closing the third shut-off valve, it can prevent the oil in the oil storage device from flowing into the lifting pipeline and the oil in the lifting pipeline from flowing into the oil storage device, effectively isolating the oil storage device and ensuring the stability of the oil flow direction during emergency lifting and descent. By adding a first rescue pipeline to the lifting pipeline, when the vehicle's lifting system fails, the first rescue interface of the first rescue pipeline can be connected to external rescue equipment (such as the lifting hydraulic system of another normal vehicle), thereby utilizing the external rescue equipment for emergency lifting. The lifting hydraulic system of this embodiment achieves emergency lifting of the vehicle without adding an extra motor, pump, or valve, facilitating subsequent repairs or replacements of the vehicle frame, or timely unloading for subsequent repairs when the vehicle is under heavy load, ensuring the convenience of vehicle maintenance and solving the problem of inconvenient maintenance caused by the inability to lift the cargo box in the prior art. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a first embodiment of the lifting hydraulic system according to the present invention is shown;

[0019] Figure 2 A schematic diagram of a second embodiment of the lifting hydraulic system according to the present invention is shown;

[0020] Figure 3 A flowchart illustrating an embodiment of the vehicle rescue method according to the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 10. Lifting cylinder;

[0023] 20. Oil storage device;

[0024] 30. Lifting pipeline; 31. Lifting valve; 32. Return oil pipeline; 33. Lifting pump;

[0025] 41. First rescue pipeline; 411. First rescue interface;

[0026] 42. Second rescue pipeline; 421. Second rescue interface;

[0027] 43. Third rescue pipeline; 431. Third rescue interface;

[0028] 51. First shut-off valve; 52. Second shut-off valve; 53. Third shut-off valve; 54. Fourth shut-off valve; 55. Fifth shut-off valve; 56. Sixth shut-off valve;

[0029] 61. First connecting pipe; 62. Second connecting pipe; 63. Third connecting pipe;

[0030] 70. Rescue vehicle; 80. Broken-down vehicle. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0035] Combination Figures 1 to 2 As shown, according to a specific embodiment of this application, a lifting hydraulic system is provided.

[0036] Specifically, the lifting hydraulic system includes at least one lifting cylinder 10, an oil storage device 20, and a lifting pipeline 30 for connecting the oil storage device 20 and the lifting cylinder 10. The lifting hydraulic system also includes a first rescue pipeline 41, one end of which is connected to the lifting pipeline 30, and the other end of which forms a first rescue interface 411. A second shut-off valve 52 is provided at the end of the lifting pipeline 30 near the lifting cylinder 10, and the second shut-off valve 52 is used to control the on / off state between the lifting pipeline 30 and the lifting cylinder 10. A third shut-off valve 53 is provided at the end of the lifting pipeline 30 near the oil storage device 20, and the third shut-off valve 53 is used to control the on / off state between the lifting pipeline 30 and the oil storage device 20.

[0037] Applying the technical solution of this embodiment, the second shut-off valve 52 can cut off the connection between the lifting cylinder 10 and the vehicle's own hydraulic system, preventing oil from flowing incorrectly between different systems, ensuring the safety and reliability of the emergency lifting process, and avoiding oil waste and system contamination. By closing the third shut-off valve 53, the oil in the oil storage device 20 can be prevented from flowing into the lifting pipeline 30, and the oil in the lifting pipeline 30 can be prevented from flowing into the oil storage device 20, effectively isolating the oil storage device and ensuring the stability of the oil flow direction during emergency lifting and emergency lowering. This embodiment adds a first rescue valve to the lifting pipeline 30. When the vehicle's lifting system fails, the first rescue interface 411 of the first rescue pipeline 41 can be connected to external rescue equipment (such as the lifting hydraulic system of another normal vehicle) to perform emergency lifting using the external rescue equipment. In this embodiment, the lifting hydraulic system achieves emergency lifting of the vehicle without the need for additional motors, pumps, or valves, facilitating subsequent repairs or replacements of the vehicle frame or timely unloading of materials for subsequent repairs when the vehicle is under heavy load. This ensures the convenience of vehicle maintenance and solves the problem of inconvenient maintenance caused by the inability to lift the cargo box in the prior art.

[0038] It should be noted that the lifting hydraulic system in this embodiment can be applied to multiple vehicles, so that a vehicle equipped with the lifting hydraulic system can be rescued by other vehicles when it malfunctions, and can also rescue the malfunctioning vehicle when other vehicles malfunction. In other words, by equipping a group of vehicles with the lifting hydraulic system, any vehicle can serve as both a malfunctioning vehicle and a rescue vehicle. During rescue, since the lifting hydraulic systems of each vehicle have the same structure, by connecting the corresponding first rescue interface 411, the lifting hydraulic system of the rescue vehicle can be used to control the lifting cylinder of the malfunctioning vehicle, thereby realizing the monitoring and control of temporary lifting and lowering actions.

[0039] by Figure 1 For example, when using a rescue vehicle with the same structure as the disabled vehicle for emergency rescue, the second shut-off valve 52 installed on the rescue vehicle can shut off the lifting hydraulic system of the rescue vehicle to ensure that the oil does not flow into the lifting cylinder of the rescue vehicle. The second shut-off valve 52 installed on the disabled vehicle can remain open to ensure that the oil can flow in and out of the lifting cylinder 10 of the disabled vehicle. The lifting cylinder 10 of the disabled vehicle can effectively receive the hydraulic oil from the rescue vehicle without being affected by the conventional lifting pipeline 30.

[0040] In other embodiments, the pressure of the lifting cylinder 10 can be monitored in real time by installing a pressure sensor near the second shut-off valve 52 to address the need for cylinder pressure monitoring during rescue operations.

[0041] by Figure 1 For example, closing the third shut-off valve 53 of the disabled vehicle can prevent the hydraulic system of the disabled vehicle from continuing to draw oil from the oil reservoir 20 of the disabled vehicle when using external rescue equipment (such as the lifting hydraulic system of another normal vehicle) for lifting rescue, thus avoiding mixing with the oil supplied by the external rescue equipment, causing excessive oil, and causing subsequent lifting operations to fail. Alternatively, after the lifting rescue is completed using external rescue equipment, when performing the lowering operation, closing the third shut-off valve 53 of the disabled vehicle can ensure that the oil in the lifting cylinder of the disabled vehicle flows back to the external rescue equipment, avoiding the problem of excessive oil overflow and oil mixing caused by the oil flowing back into the oil reservoir of the disabled vehicle itself.

[0042] In other embodiments, pressure sensors and temperature sensors can be installed near the third shut-off valve 53 to monitor oil pressure and oil temperature, thereby monitoring the oil condition in the lifting hydraulic system in real time.

[0043] In one exemplary embodiment of this application, the lifting hydraulic system includes two lifting cylinders 10, and the oil storage device 20 is a hydraulic oil tank. The two lifting cylinders 10 are located on the left and right sides of the vehicle, respectively, to jointly realize the lifting and lowering of the vehicle's cargo box.

[0044] In other embodiments, a solenoid valve can be integrated into the first rescue pipeline 41 to achieve more precise oil flow control and solve the problem of lifting stability in complex environments.

[0045] Furthermore, a lifting valve 31 is provided on the lifting pipeline 30, and a third shut-off valve 53 is located between the first rescue pipeline 41 and the lifting pipeline 30 and the lifting valve 31.

[0046] In this embodiment, the lifting valve 31 can realize the lifting and lowering control when the vehicle is working normally. By setting the third shut-off valve 53 between the connection position of the first rescue pipeline 41 and the lifting pipeline 30 and the lifting valve 31, the connection between the lifting valve 31 and the lifting cylinder 10 can be disconnected through the third shut-off valve 53 when the vehicle is in trouble. This ensures that when rescuing the vehicle, the oil will not flow between the lifting cylinder 10 of the vehicle and the lifting valve 31 and oil storage device 20 of the vehicle. The lifting cylinder 10 of the vehicle can only obtain the oil from the external rescue equipment obtained along the first rescue pipeline 41, and the lifting cylinder 10 of the vehicle can only discharge the oil to the external rescue equipment through the first rescue pipeline 41. The lifting and lowering actions are both realized by the external rescue equipment and the external oil.

[0047] Furthermore, the lifting hydraulic system also includes a second rescue pipeline 42. One end of the second rescue pipeline 42 is connected to the oil storage device 20, and the other end of the second rescue pipeline 42 forms a second rescue interface 421. The second rescue pipeline 42 cooperates with the first rescue pipeline 41 to form a partial rescue lifting oil circuit. In the emergency rescue state, both the first rescue interface 411 and the second rescue interface 421 are connected to external rescue equipment. The first rescue interface 411 and the second rescue interface 421 cooperate with the external rescue equipment to form a complete rescue lifting oil circuit. The oil in the oil storage device 20 enters the external rescue equipment through the second rescue pipeline 42, and then enters the lifting cylinder 10 through the first rescue pipeline 41 to realize the lifting action.

[0048] In this embodiment, a complete rescue lifting hydraulic circuit is constructed through the cooperation of external rescue equipment with the first rescue interface 411 and the second rescue interface 421. This ensures that when the disabled vehicle cannot lift itself, the hydraulic oil in the oil storage device 20 of the disabled vehicle can normally enter the lifting cylinder 10 of the disabled vehicle by utilizing the pump body, valve body and other structures of the external rescue equipment. This achieves the purpose of emergency lifting rescue using the disabled vehicle's own hydraulic fluid, realizes the emergency lifting function, and avoids the problem of mixing of external hydraulic fluid and the disabled vehicle's own hydraulic fluid that may occur when using hydraulic fluid provided by external rescue equipment for rescue.

[0049] Furthermore, the lifting hydraulic system also includes a third rescue pipeline 43. One end of the third rescue pipeline 43 is connected to the oil storage device 20, and the other end of the third rescue pipeline 43 forms a third rescue interface 431. The third rescue interface 431 cooperates with the first rescue pipeline 41 to form a partial rescue descent oil circuit. In the emergency rescue state, both the first rescue interface 411 and the third rescue interface 431 are connected to external rescue equipment. The first rescue interface 411 and the third rescue interface 431 cooperate with the external rescue equipment to form a complete rescue descent oil circuit. The oil in the lifting cylinder 10 enters the external rescue equipment through the first rescue pipeline 41, and then returns to the oil storage device 20 through the third rescue pipeline 43 to realize the descent action.

[0050] In this embodiment, a complete rescue descent oil circuit is constructed through the cooperation of external rescue equipment with the first rescue interface 411 and the third rescue interface 431. This ensures that when the disabled vehicle cannot descend on its own, the oil in the lifting cylinder 10 of the disabled vehicle can return normally to the oil storage device 20 of the disabled vehicle using the pump body, valve body and other structures of the external rescue equipment. This achieves the purpose of recovering the oil discharged during the descent of the disabled vehicle through the oil storage device 20, realizing the descent function and avoiding the problem of insufficient oil storage in the disabled vehicle itself caused by recovering the oil from the disabled vehicle to the external rescue equipment, as well as the oil mixing problem that occurs after the oil from the disabled vehicle enters the external rescue equipment.

[0051] In one exemplary embodiment of this application, the lifting hydraulic system includes a first rescue pipeline 41, a second rescue pipeline 42, and a third rescue pipeline 43. Specifically, in an emergency rescue state, the first rescue interface 411, the second rescue interface 421, and the third rescue interface 431 are all connected to external rescue equipment. The first rescue interface 411 and the second rescue interface 421 cooperate with the external rescue equipment to form a complete rescue lifting oil circuit. The oil in the oil storage device 20 enters the external rescue equipment through the second rescue pipeline 42, and then enters the lifting cylinder 10 through the first rescue pipeline 41 to realize the lifting action. The first rescue interface 411 and the third rescue interface 431 cooperate with the external rescue equipment to form a complete rescue lowering oil circuit. The oil in the lifting cylinder 10 enters the external rescue equipment through the first rescue pipeline 41, and then returns to the oil storage device 20 through the third rescue pipeline 43 to realize the lowering action.

[0052] In this embodiment, the second rescue pipeline 42 and the third rescue pipeline 43 provide independent lifting and lowering oil circuits, realizing bidirectional rescue capabilities for both lifting and lowering. This ensures the smoothness and safety of the rescue process, improves rescue efficiency, and guarantees safety, preventing accidental flow of oil during lifting and lowering. Through the cooperation of external rescue equipment and the rescue interface, a complete rescue oil circuit is constructed. This ensures that, in cases where the disabled vehicle cannot lift itself, the hydraulic oil of the disabled vehicle can circulate between the lifting cylinder 10 and the oil storage device 20 of the disabled vehicle using the pump body, valve body, and other structures of the external rescue equipment. This achieves the purpose of emergency rescue using the disabled vehicle's own oil, realizing both lifting and lowering functions and avoiding the potential problem of mixing external oil with the disabled vehicle's own oil when using oil provided by external rescue equipment for rescue.

[0053] In other embodiments, flow meters can be installed on the second rescue pipeline 42 and the third rescue pipeline 43 to accurately measure the oil flow rate and address the need for precise control of oil flow rate during the rescue process.

[0054] Furthermore, a fourth shut-off valve 54 is provided on the second rescue pipeline 42, which is used to control the on / off state of the second rescue pipeline 42.

[0055] In this embodiment, the fourth shut-off valve 54 enhances the controllability of the second rescue pipeline 42, ensures the directional flow of oil, and can control the opening or closing of the second rescue pipeline 42 by operating the fourth shut-off valve 54, thereby achieving precise management of oil, improving the safety and reliability of the rescue process, avoiding accidental flow of oil during the rescue process, and reducing maintenance costs.

[0056] Furthermore, a fifth shut-off valve 55 is installed on the third rescue pipeline 43, which is used to control the on / off state of the third rescue pipeline 43.

[0057] In this embodiment, the fifth shut-off valve 55 enhances the controllability of the third rescue pipeline 43, ensures the directional flow of oil, and can control the opening or closing of the third rescue pipeline 43 by operating the fifth shut-off valve 55, thereby achieving precise management of oil, improving the safety and reliability of the rescue process, avoiding accidental flow of oil during the rescue process, and reducing maintenance costs.

[0058] In other embodiments, a remote control system can be integrated into the fourth shut-off valve 54 and the fifth shut-off valve 55 to remotely control the opening and closing of the valves, thus solving the problem of inconvenience in manually operating the shut-off valves in special environments.

[0059] Furthermore, one end of the second rescue pipeline 42 is connected to the end of the lifting pipeline 30 near the oil storage device 20, and the second rescue pipeline 42 is connected to the oil storage device 20 through the lifting pipeline 30.

[0060] In this embodiment, the connection between the second rescue pipeline 42 and the lifting pipeline 30 simplifies the layout of the rescue oil circuit and improves the system's compatibility. By utilizing the existing lifting pipeline 30 as an oil transmission channel, the laying of additional pipelines is reduced, thus lowering the system's complexity.

[0061] In other embodiments, depending on actual needs, the second rescue line 42 can also be set as a line independent of the lifting line 30. The second rescue line 42 is directly connected to the oil storage device 20, without being integrated with the lifting line 30, so that the oil flow direction can be more accurate.

[0062] Furthermore, the return oil end of the lifting valve 31 is connected to the oil storage device 20 through the return oil pipeline 32, and the third rescue pipeline 43 is connected to the return oil pipeline 32. The third rescue pipeline 43 is connected to the oil storage device 20 through the return oil pipeline 32.

[0063] In this embodiment, the return oil pipeline 32 guides the oil back to the oil storage device 20, and the third rescue pipeline 43 is connected to the return oil pipeline 32, which simplifies the layout of the rescue oil circuit and improves the system compatibility. By using the existing return oil pipeline 32 as the oil return channel, the laying of additional pipelines is reduced, and the system complexity is reduced.

[0064] In other embodiments, depending on actual needs, the third rescue pipeline 43 can also be set as a pipeline independent of the return oil pipeline 32. The third rescue pipeline 43 is directly connected to the oil storage device 20 and is not integrated with the return oil pipeline 32, which can make the oil flow direction more accurate.

[0065] It should be understood that the lifting valve 31 in this embodiment refers to the valve body structure installed on the lifting pipeline 30 and used for lifting and lowering control of the lifting cylinder 10. The lifting valve 31 typically has a pressure port P, a working port A, and a return port T. The return port T is connected to the oil storage device 20 through the return pipeline 32. The pressure port P is located near the oil storage device 20, and the working port A is located near the lifting cylinder 10. A lifting pump 33 can also be installed between the pressure port P and the oil storage device 20. The lifting pump 33 is used to pressurize the oil.

[0066] In one exemplary embodiment of this application, such as Figure 2 As shown, the second shut-off valve 52 is located between the lifting valve 31 and the lifting cylinder 10, and the connection point between the first rescue pipeline 41 and the lifting pipeline 30 is located between the lifting valve 31 and the second shut-off valve 52. The third shut-off valve 53 is located between the lifting pump 33 and the oil storage device 20.

[0067] In another exemplary embodiment of this application, such as Figure 1 As shown, the second shut-off valve 52 is located between the lifting valve 31 and the lifting cylinder 10, and the third shut-off valve 53 is located between the second shut-off valve 52 and the lifting valve 31. The connection point between the first rescue pipeline 41 and the lifting pipeline 30 is located between the second shut-off valve 52 and the third shut-off valve 53.

[0068] Furthermore, a sixth shut-off valve 56 is provided at one end of the return oil pipeline 32 near the oil storage device 20. The sixth shut-off valve 56 is used to control the on / off state between the return oil pipeline 32 and the oil storage device 20.

[0069] In this embodiment, by closing the sixth shut-off valve 56, the direct backflow of oil to the oil storage device 20 can be prevented. Figure 2 For example, when a vehicle with the lifting hydraulic system in this embodiment is used as a rescue vehicle to rescue other disabled vehicles, closing the sixth shut-off valve 56 of the rescue vehicle and opening the sixth shut-off valve 56 of the disabled vehicle allows the oil flowing out of the lifting cylinder 10 of the disabled vehicle to enter the rescue vehicle after it enters the rescue vehicle, but instead returns to the oil storage device 20 of the disabled vehicle itself, thus avoiding the problem of oil mixing caused by accidental oil flow.

[0070] In other embodiments, the oil quality can be improved and the problem of oil contamination during rescue operations can be solved by installing an oil purification device near the sixth shut-off valve 56.

[0071] Furthermore, a first shut-off valve 51 is installed on the first rescue pipeline 41, which is used to control the on / off state of the first rescue pipeline 41. By operating the first shut-off valve 51, the first rescue pipeline 41 can be cut off or connected, thereby controlling the flow direction of the rescue oil.

[0072] It should be noted that in practical applications, the lifting hydraulic system can also be equipped with valve body structures, pipeline structures, pressure detection devices, etc., according to actual needs, in order to achieve monitoring and protection of the lifting hydraulic system. For example, a check valve can be installed on the return oil line 32 to ensure that the oil can only flow into the oil storage device 20 from the outside, or pressure detection devices can be installed at multiple locations on the pipeline to measure the pipeline pressure.

[0073] According to another specific embodiment of this application, a vehicle is provided, the vehicle having a lifting hydraulic system, the lifting hydraulic system being the lifting hydraulic system in the above embodiment.

[0074] By integrating the aforementioned lifting hydraulic system, when a vehicle encounters a lifting system failure, it can quickly establish a rescue hydraulic circuit with external rescue equipment, utilize the external rescue equipment for emergency lifting, improve vehicle reliability and maintenance efficiency, reduce downtime caused by lifting system failure, and enhance vehicle operating efficiency.

[0075] According to another specific embodiment of this application, a vehicle rescue method is provided, such as... Figure 3 As shown, the method includes the following steps:

[0076] Step S310: Obtain the fault status of the faulty vehicle 80;

[0077] In step S320, when it is determined that the fault state of the faulty vehicle 80 is a lifting fault state, the shut-off valves of the faulty vehicle 80 and the rescue vehicle 70 are controlled to be in the first target working state, so that the oil in the oil storage device 20 of the faulty vehicle 80 enters the lifting cylinder 10 of the faulty vehicle 80 in sequence through the second rescue pipeline 42, the rescue vehicle 70, and the first rescue pipeline 41, so as to drive the faulty vehicle 80 to achieve normal lifting operation.

[0078] In step S330, when it is determined that the fault state of the faulty vehicle 80 is a descent fault state, the shut-off valves of the faulty vehicle 80 and the rescue vehicle 70 are controlled to be in the second target working state, so that the oil in the lifting cylinder 10 of the faulty vehicle 80 returns to the oil storage device 20 of the faulty vehicle 80 in sequence through the first rescue pipeline 41, the rescue vehicle 70, and the third rescue pipeline 43, so as to drive the faulty vehicle 80 to achieve normal descent operation.

[0079] Among them, rescue vehicle 70 and breakdown vehicle 80 are the vehicles in the above embodiments.

[0080] By applying the technical solution of this embodiment, based on the hydraulic system layout of the disabled vehicle and the rescue vehicle, a rescue oil circuit is constructed by adjusting the state of the shut-off valve, enabling the emergency lifting and lowering of the disabled vehicle 80. This achieves effective oil circulation, making the rescue process more efficient and safer, reducing rescue preparation time and oil consumption, and improving vehicle maintenance efficiency.

[0081] In other embodiments, the automatic control of the shut-off valve can be achieved by integrating automated operating procedures into the rescue method, thus solving the problem of the inconvenience of manually operating the shut-off valve in emergency situations.

[0082] Furthermore, before obtaining the fault status of the faulty vehicle 80, the method also includes:

[0083] In step S300, the first rescue interface 411 of the rescue vehicle 70 and the first rescue interface 411 of the disabled vehicle 80 are connected through the first connecting pipe 61; the second rescue interface 421 of the rescue vehicle 70 and the second rescue interface 421 of the disabled vehicle 80 are connected through the second connecting pipe 62; and the third rescue interface 431 of the rescue vehicle 70 and the third rescue interface 431 of the disabled vehicle 80 are connected through the third connecting pipe 63.

[0084] Through step S300, by utilizing the first connecting pipe 61, the second connecting pipe 62, and the third connecting pipe 63, an oil circuit connection can be quickly established between the rescue vehicle 70 and the disabled vehicle 80. This allows the pumps and valves of the rescue vehicle 70 to establish an effective oil circulation path with the lifting cylinder 10 and oil storage device 20 of the disabled vehicle 80, simplifying rescue preparation work, reducing connection time, and ensuring smooth oil circulation and safety during the rescue process. Specifically, by integrating quick connectors into the connecting pipes, quick connection and disconnection of the pipes can be achieved, solving the problem of long connection time at the rescue site.

[0085] Further, in step S320, the shut-off valves controlling the disabled vehicle 80 and the rescue vehicle 70 are in the first target operating state, including:

[0086] In step S321, the first shut-off valve 51, the second shut-off valve 52, the third shut-off valve 53, and the fourth shut-off valve 54 of the faulty vehicle 80 are opened, and the first shut-off valve 51 and the fourth shut-off valve 54 of the rescue vehicle 70 are opened, while the second shut-off valve 52 and the third shut-off valve 53 of the rescue vehicle 70 are closed, so that the shut-off valves of the faulty vehicle 80 and the rescue vehicle 70 are in the first target working state.

[0087] By step S321, opening the corresponding shut-off valves on the disabled vehicle and the rescue vehicle and closing the unnecessary shut-off valves, a lifting and rescue oil circuit is constructed, ensuring that the oil can flow from the oil storage device 20 of the disabled vehicle 80 to the lifting cylinder 10 of the disabled vehicle 80 to realize the lifting action, ensuring the efficiency and safety of the rescue process, and avoiding leakage or accidental flow of oil during the lifting process.

[0088] In other embodiments, electronic control of the shut-off valve can be achieved by integrating an electronic locking mechanism into the shut-off valve, thus solving the problem of inconvenience in manually operating the shut-off valve during rescue operations.

[0089] Further, in step S330, the shut-off valves controlling the disabled vehicle 80 and the rescue vehicle 70 are in a second target operating state, including:

[0090] In step S331, the first shut-off valve 51, the second shut-off valve 52, the fifth shut-off valve 55, and the sixth shut-off valve 56 of the faulty vehicle 80 are opened, and the first shut-off valve 51 and the fifth shut-off valve 55 of the rescue vehicle 70 are opened, while the second shut-off valve 52, the third shut-off valve 53, and the sixth shut-off valve 56 of the rescue vehicle 70 are closed, so that the shut-off valves of the faulty vehicle 80 and the rescue vehicle 70 are in the second target working state.

[0091] By step S331, opening the corresponding shut-off valves on the disabled vehicle and the rescue vehicle and closing the unnecessary shut-off valves, a descent rescue oil circuit is constructed, ensuring that the oil can flow back from the lifting cylinder 10 of the disabled vehicle 80 to the oil storage device 20 of the disabled vehicle 80, thereby realizing the descent action. This ensures the safety and reliability of the rescue process, avoids oil leakage or misflow during the descent process, and reduces maintenance costs.

[0092] Optionally, the method includes the following steps:

[0093] Step S341: After completing the lifting and lowering of the faulty vehicle 80, close the first shut-off valve 51, the fourth shut-off valve 54, and the fifth shut-off valve 55 of the rescue vehicle 70, and open the second shut-off valve 52, the third shut-off valve 53, and the sixth shut-off valve 56 of the rescue vehicle 70.

[0094] Step S342: Close the first shut-off valve 51, the fourth shut-off valve 54, and the fifth shut-off valve 55 of the faulty vehicle 80;

[0095] Step S343: Disconnect the first connecting pipe 61, the second connecting pipe 62, and the third connecting pipe 63 to complete the rescue of the disabled vehicle 80.

[0096] After completing steps S341-S343, the shut-off valve of the rescue vehicle 70 is restored, and the first connecting pipe 61, the second connecting pipe 62, and the third connecting pipe 63 are disconnected. The rescue vehicle 70 can then leave and resume normal operation, while the malfunctioning vehicle 80 can be repaired.

[0097] This application also provides a preferred embodiment of an emergency lifting and rescue hydraulic system for mining trucks, which is mainly used in unmanned drive-by-wire new energy vehicles.

[0098] Specifically, such as Figure 1 As shown, the emergency lifting and rescue hydraulic system for mining trucks includes:

[0099] The lifting main valve (i.e., the aforementioned lifting valve 31) is used to control the flow and cut-off of hydraulic oil, thereby enabling the shortening of the lifting cylinder 10, the lowering of the cargo box, and the extension of the lifting cylinder 10, and the lifting of the cargo box. In some embodiments, a lifting pump (not shown in the figure) is also provided between the lifting main valve and the oil tank.

[0100] The lifting cylinder 10 is a hydraulic component that can extend or retract.

[0101] A gate valve is used to manually open or close; opening it allows oil to pass through, while closing it prevents oil from passing through.

[0102] Quick-connect hoses: Quick-connect fittings allow pipes to be quickly connected to form a passage. When the quick-connect fittings are not connected, there is a one-way valve inside to prevent the pipes from being connected. The one-way valve has a certain leakage. Therefore, a shut-off valve can be added to the emergency quick-connect interface of each rescue pipe to prevent oil leakage.

[0103] When a vehicle's cargo box cannot be lifted normally and requires lifting assistance, the following steps can be taken:

[0104] Step 1: Use the normally operating vehicle as the rescue vehicle 70 and place it next to the disabled vehicle 80, so that the emergency lifting quick-connect interface (i.e., the first rescue interface 411) of the disabled vehicle 80 is adjacent to the rescue vehicle 70.

[0105] Step 2: Connect the emergency lifting quick-connect interfaces of the two vehicles using quick-connect hoses. In this embodiment, the quick-connect hoses refer to the first connecting pipe 61.

[0106] Step 3: Open the first shut-off valve 51 and close the second shut-off valve 52 of the rescue vehicle 70;

[0107] Step 4: Open the first shut-off valve 51 and close the third shut-off valve 53 of the faulty vehicle 80;

[0108] Step 5: Operate the lifting switch of the rescue vehicle 70 to raise and lower the disabled vehicle 80;

[0109] Specifically, in step 5, when the disabled vehicle 80 is lifted, the hydraulic oil tank of the rescue vehicle 70 ( Figure 1 The oil in the pump 33 (not shown in the image) of the rescue vehicle 70 is pumped through the lifting pump 33. Figure 1 (Not shown in the image) The oil from the lifting valve 31 enters the first rescue pipeline 41, and then enters the lifting cylinder 10 of the disabled vehicle 80 to lift the disabled vehicle; when the disabled vehicle 80 descends, the oil in the lifting cylinder 10 of the disabled vehicle 80 enters the first rescue pipeline 41, and then enters the return oil pipeline of the lifting valve 31 of the rescue vehicle 70. Figure 1 (Not shown) Enters the hydraulic oil tank of rescue vehicle 70.

[0110] Step 6: After the vehicle rescue is completed, level the cargo box of the disabled vehicle 80, restore the vehicle shut-off valve switch (close the first shut-off valve 51 of the rescue vehicle 70, open the second shut-off valve 52 of the rescue vehicle 70, close the first shut-off valve 51 of the disabled vehicle 80, and open the third shut-off valve 53 of the disabled vehicle 80), and disconnect the quick-connect hose.

[0111] The emergency lifting and rescue hydraulic system for mining trucks in this embodiment achieves emergency lifting and rescue by adding a shut-off valve and a quick-connect interface to the lifting pipeline 30. It does not require additional motors, pumps, valves, etc., and uses another normally operating vehicle as a rescue vehicle for emergency lifting. It is low-cost, convenient, and fast.

[0112] This application also provides another preferred embodiment of an emergency lifting and rescue hydraulic system for mining trucks, which is mainly used in unmanned drive-by-wire new energy vehicles.

[0113] Specifically, such as Figure 2 As shown, the emergency lifting and rescue hydraulic system for mining trucks includes:

[0114] The hydraulic oil tank (i.e., the aforementioned oil storage device 20) is used to store hydraulic oil; the lifting pump 33 is used to convert low-pressure hydraulic oil into high-pressure hydraulic oil; the lifting main valve (i.e., the aforementioned lifting valve 31) is used to control the flow and cut-off of hydraulic oil, enabling the lifting cylinder to shorten the cargo box for lowering and extend the cargo box for lifting; the lifting cylinder 10 is a hydraulic component that can extend or shorten; the shut-off valve can be manually opened or closed, allowing oil to flow when open and preventing oil from flowing when closed; the quick-connect hose allows the pipeline to be quickly connected to form a passage through the quick-connect fitting. When the quick-connect fitting is not connected, its internal check valve prevents the pipeline from connecting. The check valve has a certain leakage, so a shut-off valve can be added at the emergency quick-connect interface to prevent oil leakage.

[0115] When the vehicle's cargo box cannot be lifted normally and requires lifting assistance, follow these steps:

[0116] Step 1: Use the normally operating vehicle as the rescue vehicle 70 and place it next to the disabled vehicle 80, so that the emergency lifting quick-connect interfaces of the two vehicles are adjacent.

[0117] Step 2: Connect the emergency lifting quick-connect interfaces of the two vehicles with quick-connect hoses. In this embodiment, the quick-connect hoses include a first connecting pipe 61, a second connecting pipe 62, and a third connecting pipe 63.

[0118] Step 3: Open the first shut-off valve 51, the fourth shut-off valve 54, and the fifth shut-off valve 55 of the rescue vehicle 70, and close the second shut-off valve 52, the third shut-off valve 53, and the sixth shut-off valve 56 of the rescue vehicle 70.

[0119] Step 4: Open the first shut-off valve 51, the fourth shut-off valve 54, and the fifth shut-off valve 55 of the faulty vehicle 80;

[0120] Step 5: Operate the lift switch of the rescue vehicle 70 to lift and lower the disabled vehicle;

[0121] Specifically, in step S5, when the disabled vehicle is lifted, the second shut-off valve 52 and the third shut-off valve 53 of the disabled vehicle 80 are opened, and the oil in the hydraulic oil tank of the disabled vehicle 80 enters the lifting pump 33 and lifting valve 31 of the rescue vehicle 70 through the second rescue pipeline 42, and enters the lifting cylinder 10 of the disabled vehicle 80 through the first rescue pipeline 41 to realize the lifting action of the disabled vehicle; when the disabled vehicle is lowered, the second shut-off valve 52 and the sixth shut-off valve 56 of the disabled vehicle 80 are opened, and the oil in the lifting cylinder 10 of the disabled vehicle 80 enters the lifting valve 31 of the rescue vehicle 70 through the first rescue pipeline 41, and returns to the hydraulic oil tank of the disabled vehicle 80 through the third rescue pipeline 43.

[0122] Step 6: After the vehicle rescue is completed, restore the shut-off valve switch of the rescue vehicle (close the first shut-off valve 51, the fourth shut-off valve 54 and the fifth shut-off valve 55 of the rescue vehicle 70, open the second shut-off valve 52, the third shut-off valve 53 and the sixth shut-off valve 56 of the rescue vehicle 70, and close the first shut-off valve 51, the fourth shut-off valve 54 and the fifth shut-off valve 55 of the disabled vehicle 80), disconnect the quick-connect hose, and the rescue vehicle 70 can leave for normal operation, while the disabled vehicle 80 is repaired.

[0123] The emergency lifting and rescue hydraulic system for mining trucks in this embodiment achieves emergency lifting and rescue by adding a shut-off valve and a quick-connect interface to the lifting pipeline 30. No additional motors, pumps, or valves (except for the shut-off valve) are added. Another normally operating (or normally lifting) vehicle is used as the rescue vehicle 70 for emergency lifting. The hydraulic oil of the disabled vehicle 80 and the pumps and valves of the rescue vehicle 70 are used. This allows the rescue vehicle 70 to leave immediately after the rescue is completed and resume normal operation, while the disabled vehicle 80 is repaired.

[0124] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0125] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0126] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0127] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting hydraulic system, characterized in that, The lifting hydraulic system includes at least one lifting cylinder (10), an oil reservoir (20), and a lifting pipeline (30) connecting the oil reservoir (20) and the lifting cylinder (10). The lifting hydraulic system further includes: The first rescue pipeline (41) has one end connected to the lifting pipeline (30) and the other end of the first rescue pipeline (41) forms the first rescue interface (411). A second shut-off valve (52) is provided at one end of the lifting pipeline (30) near the lifting cylinder (10). The second shut-off valve (52) is used to control the on / off state between the lifting pipeline (30) and the lifting cylinder (10). A third shut-off valve (53) is provided at one end of the lifting pipeline (30) near the oil storage device (20). The third shut-off valve (53) is used to control the on / off state between the lifting pipeline (30) and the oil storage device (20).

2. The lifting hydraulic system according to claim 1, characterized in that, A lifting valve (31) is provided on the lifting pipeline (30), and the third shut-off valve (53) is located between the first rescue pipeline (41) and the lifting pipeline (30) and the lifting valve (31).

3. The lifting hydraulic system according to claim 2, characterized in that, The lifting hydraulic system also includes a second rescue pipeline (42), one end of which is connected to the oil storage device (20), and the other end of which forms a second rescue interface (421). The second rescue pipeline (42) cooperates with the first rescue pipeline (41) to form a partial rescue lifting oil circuit. In the event of an emergency rescue, both the first rescue interface (411) and the second rescue interface (421) are connected to external rescue equipment. The first rescue interface (411) and the second rescue interface (421) cooperate with the external rescue equipment to form a complete rescue lifting oil circuit. The oil in the oil storage device (20) enters the external rescue equipment through the second rescue pipeline (42), and then enters the lifting cylinder (10) through the first rescue pipeline (41) to realize the lifting action. One end of the second rescue pipeline (42) is connected to the end of the lifting pipeline (30) near the oil storage device (20), and the second rescue pipeline (42) is connected to the oil storage device (20) through the lifting pipeline (30).

4. The lifting hydraulic system according to claim 3, characterized in that, The oil return end of the lifting valve (31) is connected to the oil storage device (20) through the oil return pipeline (32).

5. The lifting hydraulic system according to claim 4, characterized in that, The lifting hydraulic system also includes a third rescue pipeline (43), one end of which is connected to the oil storage device (20) through the return oil pipeline (32), and the other end of which forms a third rescue interface (431). The third rescue interface (431) cooperates with the first rescue pipeline (41) to form a partial rescue descent oil circuit. In the emergency rescue state, the first rescue interface (411), the second rescue interface (421), and the third rescue interface (431) are all connected to the external rescue equipment. The first rescue interface (411), the third rescue interface (431), and the external rescue equipment work together to form a complete rescue descent oil circuit. The oil in the lifting cylinder (10) enters the external rescue equipment through the first rescue pipeline (41) and then returns to the oil storage device (20) through the third rescue pipeline (43), thus realizing the descent action.

6. The lifting hydraulic system according to claim 4, characterized in that, A fourth shut-off valve (54) is provided on the second rescue pipeline (42), and the fourth shut-off valve (54) is used to control the on / off state of the second rescue pipeline (42).

7. The lifting hydraulic system according to claim 5, characterized in that, The third rescue pipeline (43) is equipped with a fifth shut-off valve (55), which is used to control the on / off state of the third rescue pipeline (43).

8. The lifting hydraulic system according to any one of claims 4-7, characterized in that, A sixth shut-off valve (56) is provided at one end of the return oil pipeline (32) near the oil storage device (20). The sixth shut-off valve (56) is used to control the on / off state between the return oil pipeline (32) and the oil storage device (20).

9. The lifting hydraulic system according to any one of claims 1-7, characterized in that, A first shut-off valve (51) is provided on the first rescue pipeline (41), and the first shut-off valve (51) is used to control the on / off state of the first rescue pipeline (41).

10. A vehicle, characterized in that, The vehicle has a lifting hydraulic system, which is the lifting hydraulic system according to any one of claims 1-9.

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