Hydraulic system with emergency function and crane

Abstract

The hydraulic system comprises an engine, a transfer case, an emergency device, an emergency power source and a plurality of hydraulic pumps, the transfer case is provided with at least two power input ends, and the engine and the emergency device are respectively connected with different power input ends. The emergency device is used for driving the transfer case to rotate when the engine fails, and further driving the plurality of hydraulic pumps connected with the transfer case to rotate, so that all actions of getting on the vehicle are realized; the emergency device is driven by an emergency power source. The crane comprises the hydraulic system. The transfer case is directly driven through the emergency device, then the hydraulic pumps are driven, all actions can be emergently carried out only through one power source, the emergency efficiency is high, no pipeline needs to be additionally arranged, and the emergency scheme is simple and reliable.

Description

Technical Field

[0001] This utility model relates to a hydraulic system for cranes, specifically to a hydraulic system and crane with emergency functions. Background Technology

[0002] With the continuous development of crane technology, emergency hydraulic system functionality has become an important feature of wheeled cranes. In cases of engine failure leading to a loss of power in the vehicle's hydraulic system, an external power source is needed to provide emergency power to the hydraulic system.

[0003] Currently, there are three main popular emergency solutions for hydraulic systems:

[0004] (1) As Figure 1 As shown, when the vehicle's power fails, i.e. the engine fails, multiple emergency power sources are used to replace the hydraulic pump in the hydraulic system to provide power to the vehicle's hydraulic system.

[0005] (2) Figure 2 As shown, when the vehicle's power fails, i.e. the engine fails, an emergency power source is used in conjunction with a switching valve to replace the hydraulic pump in the hydraulic system to provide power to the vehicle's hydraulic system.

[0006] (3) Figure 3 As shown, by integrating the two emergency hydraulic system solutions mentioned above, it is possible to achieve compound actions with specific functions while reducing the number of emergency power sources.

[0007] In summary, the technical problems with existing hydraulic system emergency solutions are: multiple emergency power sources and complex pipeline connections; only a single action can be achieved at a time, and manual switching of pipelines or operation of switching valves is required to achieve multiple actions, resulting in low emergency efficiency. Utility Model Content

[0008] Purpose of the utility model: The first purpose of this utility model is to provide a simple, reliable, and highly efficient hydraulic system with emergency functions; the second purpose of this utility model is to provide a crane with the hydraulic system.

[0009] Technical solution: The hydraulic system with emergency function described in this utility model includes an engine, a transfer case, and multiple hydraulic pumps, as well as an emergency device and an emergency power source. The transfer case has at least two power input terminals, and the engine and the emergency device are respectively connected to different power input terminals. The emergency device is used to drive the transfer case to rotate when the engine fails, thereby driving the multiple hydraulic pumps connected to the transfer case to rotate, realizing all the actions of the vehicle. The emergency device is driven by the emergency power source.

[0010] Furthermore, the emergency device employs a closed-loop hydraulic pump.

[0011] Furthermore, the emergency device employs an electric motor.

[0012] Furthermore, the emergency device employs a hydraulic motor.

[0013] Furthermore, the emergency device is connected to the power input end of the transfer case via a disengagement mechanism, which is used to enable the emergency device to engage or disengage from the transfer case.

[0014] Furthermore, the disengagement mechanism employs a clutch.

[0015] The crane described in this utility model includes the hydraulic system.

[0016] Beneficial Effects: Compared with the prior art, this utility model has the following advantages: This utility model solves the problem of vehicle power failure caused by engine failure by setting an emergency device on the transfer case. The emergency device directly drives the transfer case, and then drives each hydraulic pump. Only one power source is needed for all emergency actions, resulting in high emergency efficiency. This utility model does not require additional pipelines to be added to the original hydraulic system. The emergency solution is simple and reliable, and there is no need to adjust the original hydraulic system to adapt to the emergency function. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an existing hydraulic system;

[0018] Figure 2 This is a schematic diagram of another existing hydraulic system;

[0019] Figure 3 This is a schematic diagram of another existing hydraulic system;

[0020] Figure 4 This is a schematic diagram of the structure of a hydraulic system with emergency function according to an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of another hydraulic system with emergency function in this embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 4As shown, this embodiment of the invention provides a hydraulic system with emergency functions, including an engine, a transfer case, an emergency device, an emergency power source, and multiple hydraulic pumps. The transfer case has at least two power input terminals, and the engine and the emergency device are respectively connected to different power input terminals. The emergency device is used to rotate the transfer case when the vehicle's power fails, i.e., the engine fails, thereby rotating the multiple hydraulic pumps connected to the transfer case to achieve all vehicle actions. The emergency device is driven by an emergency power source (an external power source).

[0024] The emergency device can be a closed-loop hydraulic pump. Under normal operation, the engine drives the transfer case, which in turn drives each hydraulic pump to provide power for vehicle movement. When the engine fails, an emergency power source drives the closed-loop hydraulic pump. In this case, the closed-loop hydraulic pump essentially acts as a hydraulic motor, driving the transfer case and subsequently the other hydraulic pumps to provide emergency support for vehicle movement.

[0025] Of course, emergency devices are not limited to hydraulic components; they can also be electrical or other components, as long as they can be driven by external power to operate the transfer case, such as motors or hydraulic motors.

[0026] The emergency device can be permanently installed on the transfer case, or it can be temporarily installed on the transfer case when an emergency is needed.

[0027] When the emergency device is always mounted on the transfer case, it can be connected to the power input terminal of the transfer case via a disengagement mechanism, such as... Figure 5 As shown. When not in use, the emergency device is disconnected from the transfer case power supply using the disengagement mechanism; when an emergency is needed, the emergency device is reconnected to the transfer case power supply using the disengagement mechanism; thus preventing the emergency device from being constantly in working condition.

[0028] It should be noted that when the emergency device uses a closed-loop hydraulic pump, a disengagement mechanism is not required between the emergency device and the transfer case. That is, during normal operation, the emergency device provides power to the crane; in an emergency, the emergency device can be driven by an emergency power source, which in turn drives other pumps connected to the transfer case for emergency operation.

[0029] In this embodiment, the disengagement mechanism is a clutch.

[0030] This utility model embodiment also provides a crane, including the hydraulic system described in this utility model embodiment.

Claims

1. A hydraulic system with emergency response capabilities, comprising an engine, a transfer case, and multiple hydraulic pumps, characterized in that, It also includes an emergency device and an emergency power source. The transfer case has at least two power input terminals. The engine and the emergency device are respectively connected to different power input terminals. The emergency device is used to drive the transfer case to rotate when the engine fails, thereby driving multiple hydraulic pumps connected to the transfer case to rotate and realize all the actions of the vehicle. The emergency device is driven by the emergency power source.

2. The hydraulic system according to claim 1, characterized in that, The emergency device uses a closed-loop hydraulic pump.

3. The hydraulic system according to claim 1, characterized in that, The emergency device uses an electric motor.

4. The hydraulic system according to claim 1, characterized in that, The emergency device uses a hydraulic motor.

5. The hydraulic system according to claim 3 or 4, characterized in that, The emergency device is connected to the power input terminal of the transfer case via a disengagement mechanism, which is used to enable the emergency device to engage or disengage from the power supply of the transfer case.

6. The hydraulic system according to claim 5, characterized in that, The disengagement mechanism is a clutch.

7. A crane, characterized in that, The hydraulic system comprising any one of claims 1 to 6.

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