Emergency steering pump module, power-assisted steering system, and new energy engineering vehicle

Abstract

The present application relates to the field of new energy engineering vehicles, and discloses an emergency steering pump module, a power-assisted steering system, and a new energy engineering vehicle. The emergency steering pump module comprises a high-speed pump, a high-speed motor, and a power battery, wherein the high-speed motor is drivingly connected to the high-speed pump, and the power battery is electrically connected to the high-speed motor. The emergency steering pump module of the present application can be applied to a power-assisted steering system, and can replace a conventional steering oil pump to supply oil to an assisting oil cylinder when the conventional steering oil pump fails, the emergency steering pump module can operate independently without being driven by an engine, and therefore, the spatial limitation that traditional emergency steering pumps necessarily take off power from mechanical power sources such as a transfer case power take-off port or an engine power take-off port is eliminated; and the emergency steering pump module can be flexibly arranged at a proper position, and therefore, the arrangement of the power-assisted steering system is effectively simplified. In addition, the high-speed pump and the high-speed motor have relatively small sizes, enabling the emergency steering pump module to have a compact overall structure and a small footprint.

Description

Emergency steering pump module, power steering system and new energy engineering vehicles

[0001] Cross-reference to related applications

[0002] This application claims the benefit of Chinese Patent Application No. 202411741286.9, filed on November 29, 2024, the contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of new energy engineering vehicles, specifically, it relates to an emergency steering pump module, a steering assist system, and a new energy engineering vehicle. Background Technology

[0004] Power steering systems are an important component of new energy engineering vehicles. A power steering system assists the driver in steering and mainly consists of a power steering cylinder that drives the tires and a conventional power steering pump that drives the extension and retraction of the power steering cylinder. To improve the reliability of power steering, an emergency power steering pump is usually included. In the event of failure of the conventional power steering pump, the emergency pump supplies oil to the power steering cylinder. However, existing emergency power steering pumps are engine-driven and must be connected to the transfer case or the engine's power take-off port. This design necessitates the emergency power steering pump to be located close to the transfer case or engine, resulting in inflexible installation and significant limitations on installation location and space. This leads to a complex layout of the power steering system; for example, the distance between the emergency power steering pump and the power steering cylinder is relatively large, resulting in numerous and complex connecting pipes between them. Summary of the Invention

[0005] The purpose of this application is to provide an emergency steering pump module, a steering assist system, and a new energy engineering vehicle to solve the technical problem that the limited installation location and space of the emergency steering pump in the steering assist system leads to a complex layout of the steering assist system.

[0006] To achieve the above objectives, this application provides a disconnectable axle assembly, comprising:

[0007] High-speed pump;

[0008] A high-speed motor is connected to the high-speed pump for driving.

[0009] The power battery is electrically connected to the high-speed motor.

[0010] In some embodiments, the high-speed pump is a bidirectional pump, and the high-speed motor is a bidirectional motor.

[0011] In some embodiments, the emergency steering pump module further includes two first check valves and an accumulator, with the inlet ends of the two first check valves respectively connected to the accumulator, and the outlet ends of the two first check valves respectively connected to the first oil port and the second oil port of the high-speed pump.

[0012] In some embodiments, the high-speed pump is a variable pump, and / or the high-speed motor is a speed-regulating motor.

[0013] This application also provides a steering assist system, including:

[0014] The steering axle power steering unit includes a first power steering cylinder and a second power steering cylinder;

[0015] In the aforementioned emergency steering pump module, the high-speed pump is connected to the first power steering cylinder and the second power steering cylinder respectively, and can operate under the drive of the high-speed motor to drive the first power steering cylinder and the second power steering cylinder to extend and retract.

[0016] In some embodiments, the power steering system further includes a hydraulic oil source and a service steering pump, wherein the inlet of the service steering pump is connected to the hydraulic oil source.

[0017] The steering axle power assist unit also includes an electronically controlled directional valve. The first working port of the electronically controlled directional valve is connected to the rod chamber of the first power assist cylinder and the rodless chamber of the second power assist cylinder, respectively. The second working port of the electronically controlled directional valve is connected to the rodless chamber of the first power assist cylinder and the rod chamber of the second power assist cylinder, respectively. The return port and the inlet port of the electronically controlled directional valve are connected to the hydraulic oil source and the outlet port of the conventional steering pump, respectively.

[0018] The inlet of the high-speed pump is connected to the hydraulic oil source, and the outlet of the high-speed pump is connected to the inlet of the electronically controlled directional valve.

[0019] In some embodiments, a second check valve arranged along the oil inlet direction is connected between the oil outlet of the conventional steering pump and the oil inlet of the electronically controlled directional valve, and between the oil outlet of the high-speed pump and the oil inlet of the electronically controlled directional valve.

[0020] In some embodiments, the power steering system includes a plurality of the steering axle power steering units, the outlet of the conventional power steering pump is connected to the inlet of the electronically controlled directional valve of the plurality of steering axle power steering units, and the outlet of the high-speed pump is connected to the inlet of the electronically controlled directional valve of the plurality of steering axle power steering units.

[0021] In some embodiments, the power steering system further includes a hydraulic oil source and a service steering pump, wherein the inlet of the service steering pump is connected to the hydraulic oil source.

[0022] The steering axle power assist unit also includes an electronically controlled directional valve. The first working port of the electronically controlled directional valve is connected to the rod chamber of the first power assist cylinder and the rodless chamber of the second power assist cylinder, respectively. The second working port of the electronically controlled directional valve is connected to the rodless chamber of the first power assist cylinder and the rod chamber of the second power assist cylinder, respectively. The return port and the inlet port of the electronically controlled directional valve are connected to the hydraulic oil source and the outlet port of the conventional steering pump, respectively.

[0023] The high-speed motor is a bidirectional motor, and the high-speed pump is a bidirectional pump. The first oil port of the high-speed pump is connected to the rod chamber of the first assist cylinder and the rodless chamber of the second assist cylinder, respectively. The second oil port of the high-speed pump is connected to the rodless chamber of the first assist cylinder and the rod chamber of the second assist cylinder, respectively.

[0024] In some embodiments, the emergency steering pump module further includes two first check valves and an accumulator, with the inlet ends of the two first check valves respectively connected to the accumulator, and the outlet ends of the two first check valves respectively connected to the first oil port and the second oil port of the high-speed pump.

[0025] In some embodiments, the steering assist system includes a plurality of steering axle assist units and a plurality of emergency steering pump modules, with one steering axle assist unit corresponding to one emergency steering pump module.

[0026] This application also provides a new energy engineering vehicle, including the aforementioned power steering system.

[0027] Through the above technical solution, the emergency steering pump module of this application can be applied to the power steering system, and can replace the regular steering pump to supply oil to the power steering cylinder when the regular steering pump fails. The emergency steering pump module includes a high-speed pump, a high-speed motor, and a power battery. The power battery supplies power to the high-speed motor, which drives the high-speed pump. That is, the emergency steering pump module can operate independently without engine drive. This design removes the spatial limitation of traditional emergency steering pumps, which must draw power from mechanical power sources such as the transfer case or engine. The emergency steering pump module can be flexibly arranged in a suitable location, such as near the power steering cylinder, thus effectively simplifying the layout of the power steering system, for example, by reducing connecting pipelines. Furthermore, the high-speed pump is much smaller than a traditional ordinary pump, and the high-speed motor is also much smaller than a traditional ordinary motor. This design, while ensuring the oil supply capacity of the emergency steering pump module, allows for a compact overall structure and small footprint.

[0028] Other advantages of this application and the technical effects of preferred embodiments will be further described in the detailed embodiments below. Attached Figure Description

[0029] The accompanying drawings are provided to illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 is a schematic diagram of the structure of the emergency steering pump module in one embodiment of this application;

[0031] Figure 2 is a schematic diagram of the emergency steering pump module in another embodiment of this application;

[0032] Figure 3 is a schematic diagram of the steering assist system in one embodiment of this application;

[0033] Figure 4 is a schematic diagram of the power steering system shown in Figure 3 applied to a multi-axle steering vehicle.

[0034] Figure 5 is a schematic diagram of the steering assist system in another embodiment of this application;

[0035] Figure 6 is a schematic diagram of the steering assist system shown in Figure 5 applied to a multi-axle steering vehicle.

[0036] Explanation of reference numerals in the attached diagram: 1. Emergency steering pump module; 11. High-speed pump; 12. High-speed motor; 13. Power battery; 14. First check valve; 15. Accumulator; 2. Steering axle power assist unit; 21. First power assist cylinder; 22. Second power assist cylinder; 23. Electronically controlled directional valve; 3. Hydraulic oil source; 4. Standard steering pump; 5. Second check valve Detailed Implementation

[0037] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0038] In this application, unless otherwise stated, directional terms such as "center," "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. The directional terms "inner" and "outer" refer to the inside and outside of the outline of each component itself.

[0039] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] This application first provides an emergency steering pump module.

[0041] In one embodiment, referring to Figures 1 and 2, the emergency steering pump module includes:

[0042] High-speed pump 11;

[0043] The high-speed motor 12 is connected to the high-speed pump 11 for driving.

[0044] The power battery 13 is electrically connected to the high-speed motor 12.

[0045] The emergency steering pump module of this embodiment can be applied to a power steering system. It can replace the regular steering pump to supply oil to the power steering cylinder when the regular steering pump fails. The emergency steering pump module 1 includes a high-speed pump 11, a high-speed motor 12, and a power battery 13. The power battery 13 supplies power to the high-speed motor 12, which drives the high-speed pump 11. That is, the emergency steering pump module 1 can operate independently without engine drive. This setting removes the spatial limitation that traditional emergency steering pumps must take power from mechanical power sources such as the transfer case or engine. The emergency steering pump module 1 can be flexibly arranged in a suitable location, such as near the power steering cylinder. In this way, the layout of the power steering system is effectively simplified, for example, by reducing the number of connecting pipelines.

[0046] In addition, according to formula q t = nV, where q t Let q be the flow rate of the hydraulic pump, n be the rotational speed of the hydraulic pump, and V be the displacement of the hydraulic pump. It can be determined that at a flow rate q... t Under the premise of no change, by increasing the speed n of the hydraulic pump, the displacement V of the hydraulic pump can be reduced, thereby reducing the size of the hydraulic pump. In other words, the hydraulic pump adopts a high-speed pump 11 with a higher speed, and its size can be designed to be much smaller than that of a traditional ordinary hydraulic pump.

[0047] Then according to formula P mec =C mec D 2 l′n syn , where P mec Where D is the motor's output mechanical power, l′ is the motor stator inner diameter, and n is the equivalent axial stack length. syn Given the motor speed, we can determine that the motor outputs mechanical power P. mec Without changing the speed, increase the motor speed n syn This allows the motor's volume D to be reduced. 2 The l′ is reduced, in other words, the motor adopts a high-speed motor 12 with a higher speed, and its volume can be designed to be much smaller than that of a traditional ordinary motor.

[0048] In other words, in this embodiment, by using a high-speed pump 11 for the hydraulic pump and a high-speed motor 12 for the motor, the emergency steering pump module can be designed to be relatively compact, with a small overall size and small space occupation, while meeting the flow output requirements.

[0049] Furthermore, in existing power steering systems, when the vehicle starts, with the regular power steering pump operating normally, the traditional emergency power steering pump, being connected to the engine, is continuously driven to run when the engine starts, resulting in significant energy loss. In contrast, the emergency power steering pump module 1 in this embodiment operates independently, and the high-speed motor 12 can be stopped when emergency power steering is not needed. That is, the emergency power steering pump module 1 can be stopped when the vehicle starts, avoiding the waste of energy resources.

[0050] In one embodiment, referring to Figure 2, the high-speed pump 11 is a bidirectional pump, and the high-speed motor 12 is a bidirectional motor. This configuration allows the emergency steering pump module to reverse the pumping direction of the hydraulic oil. In practical applications, the two ports of the high-speed pump 11 can be directly connected to two power steering cylinders located on the same axle. During axle steering, the piston of one power steering cylinder needs to extend outwards, and the piston of the other power steering cylinder needs to retract. When the regular steering pump fails, the high-speed motor 12 starts, and the high-speed pump 11 operates, pumping the hydraulic oil from the rodless chamber of the retractable power steering cylinder and the rod chamber of the extended power steering cylinder to the rod chamber of the retractable cylinder and the rodless chamber of the extended power steering cylinder, thereby causing the piston of the retractable cylinder to retract and the piston of the extended power steering cylinder to extend.

[0051] In other words, the emergency steering pump module 1 in this embodiment can be directly connected to the power steering cylinder without the need for a reversing valve to change the flow direction of the hydraulic oil and realize the extension and retraction of the power steering cylinder. This configuration can greatly simplify the connection pipeline between the emergency steering pump module 1 and the power steering cylinder and reduce the pipeline layout cost.

[0052] Furthermore, referring to Figure 2, the emergency steering pump module 1 also includes two first check valves 14 and an accumulator 15. The oil inlet ends of the two first check valves 14 are respectively connected to the accumulator 15, and the oil outlet ends of the two first check valves 14 are respectively connected to the first oil port and the second oil port of the high-speed pump 11. With this configuration, the accumulator 15 can play a role in replenishing oil. That is, when a leak occurs in the hydraulic oil circuit formed by the high-speed pump 11 and the power steering cylinder, the accumulator 15 can replenish oil in time to ensure stable oil pressure. This effectively improves the reliability of the emergency drive power steering cylinder of the emergency steering pump module 1.

[0053] In one embodiment, the high-speed pump 11 is a variable displacement pump, and / or the high-speed motor 12 is a speed-regulating motor. This configuration allows the hydraulic oil output flow of the emergency steering pump module 1 to be adjustable, thereby enabling adjustable extension and retraction speeds of the power steering cylinder, and consequently, adjustable steering speeds.

[0054] Specifically, the emergency steering pump module 1 can be in various combinations, for example, the high-speed pump 11 is a variable pump and the high-speed motor 12 is a constant speed motor; or, the high-speed pump 11 is a fixed displacement pump and the high-speed motor 12 is a variable speed motor; or, the high-speed pump 11 is a variable pump and the high-speed motor 12 is a variable speed motor.

[0055] This application first provides a steering assist system.

[0056] In one embodiment, referring to Figures 3 to 6, the steering assist system includes:

[0057] The steering axle power assist unit 2 includes a first power assist cylinder 21 and a second power assist cylinder 22;

[0058] The aforementioned emergency steering pump module 1, the high-speed pump 11 is connected to the first power steering cylinder 21 and the second power steering cylinder 22 respectively, and can operate under the drive of the high-speed motor 12 to drive the first power steering cylinder 21 and the second power steering cylinder 22 to extend and retract.

[0059] It should be noted that the principle and structure of power steering axle steering via power cylinder are well known to those skilled in the art, and therefore will not be elaborated here.

[0060] Understandably, in the event of failure of the commonly used steering pump in the power steering system, the emergency steering pump module 1 can replace the commonly used steering pump to drive the extension and retraction of the first power steering cylinder 21 and the second power steering cylinder 22 of the steering axle power steering unit 2, thereby achieving power steering assistance.

[0061] In practical applications, a controller can be set up to control the emergency steering pump module 1. When the controller detects an abnormality in the power steering system, such as low system oil pressure, low hydraulic oil flow, or steering speed and angle of the steering axle deviating from the preset range during steering, it indicates that the regular steering pump has failed. At this time, the high-speed motor 12 can be started and the high-speed pump 11 can be started. Furthermore, during the operation of the emergency steering pump module 1, the hydraulic oil output flow of the emergency steering pump module 1 can be controlled according to the steering speed and angle requirements of the steering axle.

[0062] In one embodiment, referring to Figure 3, the power steering system further includes a hydraulic oil source 3 and a conventional steering oil pump 4, with the oil inlet of the conventional steering oil pump 4 connected to the hydraulic oil source 3.

[0063] The steering axle power steering unit 2 also includes an electronically controlled directional valve 23. The first working port of the electronically controlled directional valve 23 is connected to the rod chamber of the first power steering cylinder 21 and the rodless chamber of the second power steering cylinder 22, respectively. The second working port of the electronically controlled directional valve 23 is connected to the rodless chamber of the first power steering cylinder 21 and the rod chamber of the second power steering cylinder 22, respectively. The return port and the inlet port of the electronically controlled directional valve 23 are connected to the hydraulic oil source 3 and the outlet port of the common steering pump 4, respectively.

[0064] The oil inlet of the high-speed pump 11 is connected to the hydraulic oil source 3, and the oil outlet of the high-speed pump 11 is connected to the oil inlet of the electrically controlled directional valve 23.

[0065] Understandably, the power steering system in this embodiment is an electro-hydraulic power steering system. Under normal circumstances, the normal power steering pump 4 supplies oil to the first power steering cylinder 21 and the second power steering cylinder 22. The extension and retraction of the first power steering cylinder 21 and the second power steering cylinder 22 are realized by the reversing of the electronically controlled reversing valve 23. In the event of failure of the normal power steering pump 4, the emergency power steering pump module 1 supplies oil to the first power steering cylinder 21 and the second power steering cylinder 22.

[0066] Specifically, the hydraulic oil source 3 can be a hydraulic oil tank or other hydraulic system.

[0067] Furthermore, a second check valve 5, arranged along the oil inlet direction, is connected between the oil outlet of the service steering pump 4 and the oil inlet of the electronically controlled directional valve 23, and between the oil outlet of the high-speed pump 11 and the oil inlet of the electronically controlled directional valve 23, respectively. With this configuration, when internal leakage occurs in the service steering pump 4 or the high-speed pump 11, the second check valve 5 can prevent hydraulic oil backflow, maintain the oil pressure of the power steering system, and improve safety.

[0068] Furthermore, referring to Figure 4, the power steering system includes multiple steering axle power steering units 2. The outlet of the common steering oil pump 4 is connected to the inlet of the electronically controlled directional valve 23 of the multiple steering axle power steering units 2, and the outlet of the high-speed pump 11 is connected to the inlet of the electronically controlled directional valve 23 of the multiple steering axle power steering units 2.

[0069] Understandably, the multiple steering axle assist units 2 are used to assist the steering of multiple steering axles respectively. Thus, the steering assist system of this embodiment can be used in multi-axle steering vehicles, such as wheeled cranes, multi-axle emergency power platform vehicles, etc.

[0070] In this embodiment, an emergency steering pump module 1 supplies oil to multiple steering axle assist units 2. The hydraulic oil output flow of the emergency steering pump module 1 can be controlled according to the sum of the steering speed and angle requirements of the multiple steering axles. Then, the multiple steering axle assist units 2 control the opening degree of their respective electronically controlled directional valves 23 according to their respective requirements.

[0071] In another embodiment, referring to Figure 5, the power steering system further includes a hydraulic oil source 3 and a conventional steering oil pump 4, with the oil inlet of the conventional steering oil pump 4 connected to the hydraulic oil source 3.

[0072] The steering axle power steering unit 2 also includes an electronically controlled directional valve 23. The first working port of the electronically controlled directional valve 23 is connected to the rod chamber of the first power steering cylinder 21 and the rodless chamber of the second power steering cylinder 22, respectively. The second working port of the electronically controlled directional valve 23 is connected to the rodless chamber of the first power steering cylinder 21 and the rod chamber of the second power steering cylinder 22, respectively. The return port and the inlet port of the electronically controlled directional valve 23 are connected to the hydraulic oil source 3 and the outlet port of the common steering pump 4, respectively.

[0073] The high-speed motor 12 is a bidirectional motor, and the high-speed pump 11 is a bidirectional pump. The first oil port of the high-speed pump 11 is connected to the rod chamber of the first assist cylinder 21 and the rodless chamber of the second assist cylinder 22, respectively. The second oil port of the high-speed pump 11 is connected to the rodless chamber of the first assist cylinder 21 and the rod chamber of the second assist cylinder 22, respectively.

[0074] Understandably, the steering assist system in this embodiment is also an electro-hydraulic steering assist system.

[0075] In this embodiment, the emergency steering pump module 1 is directly connected to the first power steering cylinder 21 and the second power steering cylinder 22 of the steering axle power steering unit 2. In the event of a failure of the regular steering pump 4, the high-speed pump 11, through its pumping and reversing functions, establishes a hydraulic circuit between the first power steering cylinder 21 and the second power steering cylinder 22, enabling their extension and retraction. In other words, in the power steering system of this embodiment, even if the electronically controlled reversing valve 23 malfunctions, the emergency steering pump module 1 can still ensure the normal operation of the first power steering cylinder 21 and the second power steering cylinder 22, ensuring normal power steering of the steering axle and greatly improving the reliability of the power steering.

[0076] Furthermore, the emergency steering pump module 1 also includes two first check valves 14 and an accumulator 15. The oil inlet ends of the two first check valves 14 are connected to the accumulator 15, and the oil outlet ends of the two first check valves 14 are connected to the first oil port and the second oil port of the high-speed pump 11, respectively. With this configuration, when a leak occurs in the high-speed pump 11 or in the pipeline between the high-speed pump 11 and the power steering cylinder, the accumulator 15 can replenish oil in time, maintaining stable oil pressure for a period of time and ensuring the power steering function.

[0077] Furthermore, referring to Figure 6, the power steering system includes multiple steering axle power steering units 2 and multiple emergency steering pump modules 1, with one steering axle power steering unit 2 corresponding to one emergency steering pump module 1.

[0078] Understandably, the multiple steering axle assist units 2 are used to assist the steering of multiple steering axles respectively. Thus, the steering assist system of this embodiment can be used in multi-axle steering vehicles, such as wheeled cranes, multi-axle emergency power platform vehicles, etc.

[0079] By configuring an emergency steering pump module 1 for each steering axle power assist unit 2, the steering speed and steering angle of each steering axle can be controlled individually by the corresponding emergency steering pump module 1, effectively improving the control accuracy of each steering axle.

[0080] Specifically, the power batteries 13 of the multiple emergency steering pump modules 1 can be arranged individually or integrated.

[0081] This application also provides a new energy engineering vehicle, including the aforementioned power steering system.

[0082] Clearly, this new energy engineering vehicle also possesses the beneficial effects of the aforementioned power steering system.

[0083] Specifically, new energy engineering vehicles can include new energy wheeled cranes, new energy emergency power platform vehicles, etc.

[0084] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0085] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An emergency steering pump module, characterized in that, include: High-speed pump (11); A high-speed motor (12) is driven and connected to the high-speed pump (11); The power battery (13) is electrically connected to the high-speed motor (12).

2. The emergency steering pump module according to claim 2, characterized in that, The high-speed pump (11) is a bidirectional pump, and the high-speed motor (12) is a bidirectional motor.

3. The emergency steering pump module according to claim 3, characterized in that, The emergency steering pump module (1) also includes two first check valves (14) and an accumulator (15). The oil inlet of the two first check valves (14) is connected to the accumulator (15) respectively, and the oil outlet of the two first check valves (14) is connected to the first oil port and the second oil port of the high-speed pump (11) respectively.

4. The emergency steering pump module according to claim 1, characterized in that, The high-speed pump (11) is a variable pump, and / or the high-speed motor (12) is a speed-regulating motor.

5. A power steering system, characterized in that, include: The steering axle power steering unit (2) includes a first power steering cylinder (21) and a second power steering cylinder (22); According to any one of claims 1 to 4, the high-speed pump (11) is connected to the first power steering cylinder (21) and the second power steering cylinder (22) respectively, and can operate under the drive of the high-speed motor (12) to drive the first power steering cylinder (21) and the second power steering cylinder (22) to extend and retract.

6. The power steering system according to claim 5, characterized in that, The power steering system also includes a hydraulic oil source (3) and a common steering oil pump (4), the oil inlet of which is connected to the hydraulic oil source (3); The steering axle assist unit (2) also includes an electronically controlled directional valve (23). The first working port of the electronically controlled directional valve (23) is connected to the rod chamber of the first assist cylinder (21) and the rodless chamber of the second assist cylinder (22), respectively. The second working port of the electronically controlled directional valve (23) is connected to the rodless chamber of the first assist cylinder (21) and the rod chamber of the second assist cylinder (22), respectively. The return port and the inlet port of the electronically controlled directional valve (23) are connected to the hydraulic oil source (3) and the outlet port of the common steering pump (4), respectively. The inlet of the high-speed pump (11) is connected to the hydraulic oil source (3), and the outlet of the high-speed pump (11) is connected to the inlet of the electronically controlled directional valve (23).

7. The power steering system according to claim 6, characterized in that, A second check valve (5) arranged along the oil inlet direction is connected between the oil outlet of the conventional steering pump (4) and the oil inlet of the electronically controlled directional valve (23), and between the oil outlet of the high-speed pump (11) and the oil inlet of the electronically controlled directional valve (23).

8. The power steering system according to claim 6, characterized in that, The steering assist system includes multiple steering axle assist units (2), the oil outlet of the common steering oil pump (4) is connected to the oil inlet of the electronically controlled directional valve (23) of the multiple steering axle assist units (2), and the oil outlet of the high-speed pump (11) is connected to the oil inlet of the electronically controlled directional valve (23) of the multiple steering axle assist units (2).

9. The power steering system according to claim 5, characterized in that, The power steering system also includes a hydraulic oil source (3) and a common steering oil pump (4), the oil inlet of which is connected to the hydraulic oil source (3); The steering axle assist unit (2) also includes an electronically controlled directional valve (23). The first working port of the electronically controlled directional valve (23) is connected to the rod chamber of the first assist cylinder (21) and the rodless chamber of the second assist cylinder (22), respectively. The second working port of the electronically controlled directional valve (23) is connected to the rodless chamber of the first assist cylinder (21) and the rod chamber of the second assist cylinder (22), respectively. The return port and the inlet port of the electronically controlled directional valve (23) are connected to the hydraulic oil source (3) and the outlet port of the common steering pump (4), respectively. The high-speed motor (12) is a bidirectional motor, and the high-speed pump (11) is a bidirectional pump. The first oil port of the high-speed pump (11) is connected to the rod chamber of the first assist cylinder (21) and the rodless chamber of the second assist cylinder (22), respectively. The second oil port of the high-speed pump (11) is connected to the rodless chamber of the first assist cylinder (21) and the rod chamber of the second assist cylinder (22), respectively.

10. The power steering system according to claim 9, characterized in that, The emergency steering pump module (1) also includes two first check valves (14) and an accumulator (15). The oil inlet of the two first check valves (14) is connected to the accumulator (15) respectively, and the oil outlet of the two first check valves (14) is connected to the first oil port and the second oil port of the high-speed pump (11) respectively.

11. The power steering system according to claim 9, characterized in that, The steering assist system includes multiple steering axle assist units (2) and multiple emergency steering pump modules (1), with one steering axle assist unit (2) corresponding to one emergency steering pump module (1).

12. A new energy engineering vehicle, characterized in that, The steering assist system includes any one of claims 5 to 11.

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