CN116176691A - Steering power assisting system of electric mining truck and electric mining truck - Google Patents
Steering power assisting system of electric mining truck and electric mining truck Download PDFInfo
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- CN116176691A CN116176691A CN202310281956.2A CN202310281956A CN116176691A CN 116176691 A CN116176691 A CN 116176691A CN 202310281956 A CN202310281956 A CN 202310281956A CN 116176691 A CN116176691 A CN 116176691A
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- 238000005065 mining Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 description 14
- 239000010720 hydraulic oil Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention relates to a power-assisted steering system of an electric mining truck and the electric mining truck, wherein the power-assisted steering system comprises: a first steering assist unit and a second steering assist unit; a first control device is arranged in the first steering power assisting unit and is electrically connected with the second steering power assisting unit; the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when the second steering power assisting unit is detected to stop providing steering power for the electric mining truck. Based on the above, when the second steering power assisting unit stops providing the steering power for the electric mining truck due to failure, the first steering power assisting unit can replace the second steering power assisting unit in time to provide the steering power for the electric mining truck, so that the steering power assisting system outputs more stable steering power, and the situation that the electric mining truck has safety accidents due to the fact that the steering power assisting is lost is avoided.
Description
Technical Field
The invention relates to the technical field of electric mining trucks, in particular to a steering power assisting system of an electric mining truck and the electric mining truck.
Background
Mining trucks are a type of heavy dump truck used to accomplish the tasks of rock-to-earth stripping and ore transportation, which operate primarily in surface mines. An electric mining truck is one type of mining truck. The electric mining truck is provided with a steering power assisting system, and the steering power assisting system can provide steering power for the electric mining truck when a driver controls the electric mining truck to steer.
At present, a power supply device, a control device and a steering power device are arranged in the steering power assisting system, the power supply device is used for supplying power to the control device, and the control device is used for controlling the steering power device to provide steering power for the electric mining truck. When at least one of the power supply device and the control device fails, the steering power assisting system can not provide steering power for the electric mining truck, and the electric mining truck mainly works in rugged and dangerous mines, and if the electric mining truck loses the steering power, safety accidents are easy to happen.
Based on this, how to improve the stability of the steering assist output by the steering assist system becomes a technical problem to be solved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a steering power assisting system of an electric mining truck and the electric mining truck.
The technical scheme of the invention is as follows:
the invention provides a power steering system of an electric mining truck, which comprises:
a first steering assist unit and a second steering assist unit;
a first control device is arranged in the first steering power assisting unit and is electrically connected with the second steering power assisting unit;
the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when the second steering power assisting unit is detected to stop providing steering power for the electric mining truck.
In the embodiment of the specification, the first steering power assisting unit is further provided with a first power supply device, an electric switch and a first steering power device;
the electric switch is respectively and electrically connected with the first power supply device and the first steering power device, and is also electrically connected with the first control device;
the first control device is used for controlling the electric switch to be closed when the second power steering unit is detected to stop providing power steering for the electric mining truck; after the electric switch is closed, the first power supply device supplies power to the first steering power device, so that the first steering power device provides steering assistance for the electric mining truck.
In the embodiment of the present disclosure, the first steering assist unit is further provided with a check valve;
and the steering power output by the first steering power device flows to the electric mining truck after passing through the one-way valve.
In the embodiment of the present specification, the first steering power device is provided with a first oil pump and a first motor;
the first oil pump is electrically connected with the first motor;
the first motor is used for driving the first oil pump to provide steering assistance for the electric mining truck.
In the embodiment of the present specification, the second steering power unit is provided with a second control device, a second power supply device and a second steering power device;
the second control device is respectively and electrically connected with the second power supply device and the second steering power device;
the second power supply device is used for supplying power to the second control device;
the second control device is used for controlling the second steering power device to provide steering assistance for the electric mining truck.
In the embodiment of the present disclosure, the first control device is electrically connected to the second power supply device;
and the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when receiving the power supply stopping information sent by the second power supply device.
In the embodiment of the present disclosure, the first control device is electrically connected to the second control device;
the first control device is used for controlling the first steering assistance unit to provide steering assistance for the electric mining truck when the second control device is detected to be faulty.
In the embodiment of the present disclosure, the first control device is electrically connected to the second power supply device and the second control device respectively;
the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when receiving the power supply stopping information sent by the second power supply device and/or detecting that the second control device fails.
In this embodiment of the present disclosure, the first control device is specifically configured to control, if it is determined that the vehicle speed of the electric mining truck is greater than a preset speed threshold, the first steering assist unit to provide steering assist for the electric mining truck when power supply stopping information sent by the second power supply device is received and/or when a failure of the second control device is detected.
The invention also provides an electric mining truck, comprising:
an electric mining truck body and a steering assist system as described above;
the steering power assisting system is mechanically connected with the electric mining truck body;
the power steering system is used for providing power steering for the electric mining truck body.
By adopting the technical scheme, the invention provides a steering power assisting system of an electric mining truck, which comprises the following components:
a first steering assist unit and a second steering assist unit; a first control device is arranged in the first steering power assisting unit and is electrically connected with the second steering power assisting unit; the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when the second steering power assisting unit is detected to stop providing steering power for the electric mining truck. Based on this, normally, the second steering assist unit provides steering assist to the electric mining truck, and when the second steering assist unit stops providing steering assist to the electric mining truck, the first steering assist unit can replace the second steering assist unit in time to provide steering assist to the electric mining truck. The steering power output by the steering power assisting system is more stable, and the situation that the electric mining truck has safety accidents due to the fact that the steering power assisting system loses is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a steering assist system of an electric mining truck according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an application scenario of a steering assist system of an electric mining truck according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electric mining truck according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Mining trucks are a type of heavy dump truck used to accomplish the tasks of rock-to-earth stripping and ore transportation, which operate primarily in surface mines. An electric mining truck is one type of mining truck. The electric mining truck is provided with a steering power assisting system, and the steering power assisting system can provide steering power for the electric mining truck when a driver rotates the steering wheel of the electric mining truck, so that the driver can successfully rotate the steering wheel of the electric mining truck.
At present, only one set of power-assisted steering unit (comprising a power supply device, a control device and a steering power device) is arranged in the power-assisted steering system, so that when at least one of the power supply device and the control device in the set of power-assisted steering unit fails, the power-assisted steering system cannot provide power-assisted steering for the electric mining truck. The electric mining truck mainly works in rugged and dangerous mines, and if the electric mining truck loses steering assistance, safety accidents are easy to occur.
Based on the above, how to improve the stability of the steering power output by the steering power assisting system so as to avoid the occurrence of safety accidents caused by the fact that the driver is not driving the steering wheel of the electric mining truck as much as possible becomes a technical problem to be solved urgently.
In order to solve the technical problems, the invention provides a steering power assisting system of an electric mining truck and the electric mining truck. The technical scheme of the invention is described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a steering assist system of an electric mining truck according to an embodiment of the present invention. Fig. 2 is a schematic diagram of an application scenario of a steering assist system of an electric mining truck according to an embodiment of the present invention.
Referring to fig. 1 and 2, a steering assist system of an embodiment of the present specification includes:
a first steering assist unit 11 and a second steering assist unit 12.
The first steering assist unit 11 may be provided therein with a first power supply device 111, an electric switch 112, a first control device 113, and a first steering power device 114. A first motor 1111 and a first oil pump 1112 may be provided in the first steering power unit 114. Wherein, the electric switch 112 is electrically connected with the first motor 1111 of the first power supply device 111 and the first steering power device 114, and the electric switch 112 is also electrically connected with the first control device 113.
The second power supply device 121, the second control device 122, and the second steering power device 123 may be provided in the second steering power unit 12. The second steering power device 123 may be provided therein with a second motor 1211 and a second oil pump 1212. Wherein the second power supply device 121 and the second control device 122 are electrically connected to the first control device 113, respectively, and the second control device 122 is also electrically connected to the second motor 1211 in the second power supply device 121 and the second steering power device 123, respectively.
In this embodiment of the present disclosure, after the electric mining truck is started, the second power steering unit 12 provides power for the electric mining truck by default, that is, the second power supply device 121 supplies power to the second control device 122, the second control device 122 controls the running state of the second power steering device 123, after the second power steering device 123 is started, it is able to provide power for the electric mining truck (specifically, referring to fig. 2, after the second power steering device 123 is started, hydraulic oil in a hydraulic oil tank of the electric mining truck is driven to flow to a hydraulic steering device of the electric mining truck through the hydraulic oil pipeline 21, the hydraulic steering device guides the power for steering into the power steering cylinder 22 of the electric mining truck, so that a cylinder piston rod of the power steering cylinder 22 starts to perform telescopic motion to drive a steering push rod of the front steering axle assembly 23 to rotate, and in the process of rotating the steering push rod, the steering wheel of the electric mining truck can be driven to rotate, so as to realize steering of the vehicle. The steering assistance is specifically hydraulic oil, and the flow direction of the steering assistance is indicated by an arrow in fig. 2.
When either second power supply device 121 or second control device 122 fails, second steering assist unit 12 is unable to continue to provide steering assist to the electric mining truck, and therefore, first control device 113 may be configured to control electric switch 112 to close upon detection of a failure of either of second power supply device 121 and second control device 122. After electric switch 112 is closed, first power supply device 111 supplies power to first steering power device 114, so that first steering power device 114 provides steering assistance to the electric mining truck instead of second steering power device 123.
According to the technical scheme, when the second steering power assisting unit 12 stops providing steering power for the electric mining truck, the first steering power assisting unit 11 is controlled to provide steering power for the electric mining truck, so that the steering power outputted by the steering power assisting system is more stable, and the situation that the electric mining truck is in safety accidents due to the fact that the steering power assisting is lost is avoided.
In the embodiment of the present disclosure, the first power supply device 111 may be a storage battery, and the output voltage of the first power supply device 111 is a low voltage that does not cause damage to the human body, for example, the output voltage of the first power supply device 111 may be 24V. The first control device 113 may be a vehicle controller (Vehicle control unit, VCU). The electrical switch 112 may be a low voltage relay. The first motor 1111 may be a direct current motor.
And, the second steering assist unit may be a steering assist system mounted in an electric mining truck in the related art for providing steering assist to the electric mining truck, and its constituent parts will not be described in detail herein.
Referring to fig. 2, in the embodiment of the present disclosure, the first steering assist unit 11 is further provided with a check valve 24. The steering assist output from the first steering power unit 114 passes through the check valve 24 and flows to the electric mining truck. Thus, the reverse flow of the steering assist force can be prevented.
As will be appreciated by those skilled in the art, when the speed of the electric mining truck is low, if the electric mining truck loses steering assistance, the electric mining truck will not be subjected to safety accidents; when the speed of the electric mining truck is high, if the electric mining truck loses steering assistance, the electric mining truck is prone to safety accidents. Therefore, when the vehicle speed of the electric mining truck is high, the stability of the steering assist force output by the steering assist system needs to be improved; when the vehicle speed of the electric mining truck is low, the first steering assist unit 11 can be prevented from providing steering assist to the electric mining truck, so that the energy consumption of the first power supply device in the first steering assist unit 11 can be reduced.
Based on this, in the present embodiment, first control device 113 may also consider the vehicle speed of the electric mining truck when determining whether to control first steering assist unit 11 to provide steering assist to the electric mining truck. Specifically, when it is detected that the second steering assist unit 12 stops providing steering assist to the electric mining truck, the first control device 113 may be configured to determine whether the vehicle speed of the electric mining truck is greater than a preset speed threshold, so as to obtain a determination result. If the judgment result shows that the speed of the electric mining truck is greater than the preset speed threshold, the first control device 113 controls the first steering assistance unit 11 to provide steering assistance for the electric mining truck.
The preset speed threshold may be set by those skilled in the art according to practical situations, for example, the preset speed threshold is 2Km/h.
In the embodiment of the present disclosure, the first control device 113 may be electrically connected to only the second power supply device 121 or the second control device 122. If the first control device 113 is electrically connected to the second power supply device 121 only, the first control device 113 may be configured to control the first steering assist unit 11 to provide steering assist to the electric mining truck when receiving the power supply stopping information sent by the second power supply device 121 (i.e. when detecting that the second power supply device 121 fails); if the first control device 113 is electrically connected to only the second control device 122, the first control device 113 may be configured to control the first steering assist unit 11 to provide steering assist to the electric mining truck when detecting that the second control device 122 fails.
Fig. 3 is a schematic structural diagram of an electric mining truck according to an embodiment of the present invention. As shown in fig. 3, the present electric mining truck includes:
an electric mining truck body 31 and a steering assist system 32 as described above.
A hydraulic oil tank 311 and a hydraulic steering gear 312 are provided in the electric mining truck body 31, and the steering assist system 32 is mechanically connected to the hydraulic oil tank 311 and the hydraulic steering gear 312, respectively, through a hydraulic oil line 21, and provides steering assist to the electric mining truck body 31. The flow direction of the steering assist force is as indicated by the arrow in the hydraulic oil line 21 in fig. 3.
In the embodiment of the present disclosure, the electric mining truck body 31 is a prior art, and the present invention is mainly directed to improvements in the steering assist system. Accordingly, the specific structure of electric mining truck body 31, the specific connection relationship of steering assist system 32 and electric mining truck body 31, and the like may be referred to in the art, and are not specifically limited herein.
For the foregoing method embodiments, for simplicity of explanation, the methodologies are shown as a series of acts, but one of ordinary skill in the art will appreciate that the present invention is not limited by the order of acts, as some steps may, in accordance with the present invention, occur in other orders or concurrently. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. For the apparatus class embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference is made to the description of the method embodiments for relevant points.
The steps in the method of each embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs, and the technical features described in each embodiment can be replaced or combined.
The modules and the submodules in the device and the terminal of the embodiments of the invention can be combined, divided and deleted according to actual needs.
In the embodiments provided in the present invention, it should be understood that the disclosed terminal, apparatus and method may be implemented in other manners. For example, the above-described terminal embodiments are merely illustrative, and for example, the division of modules or sub-modules is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules or sub-modules illustrated as separate components may or may not be physically separate, and components that are modules or sub-modules may or may not be physical modules or sub-modules, i.e., may be located in one place, or may be distributed over multiple network modules or sub-modules. Some or all of the modules or sub-modules may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional module or sub-module in the embodiments of the present invention may be integrated in one processing module, or each module or sub-module may exist alone physically, or two or more modules or sub-modules may be integrated in one module. The integrated modules or sub-modules may be implemented in hardware or in software functional modules or sub-modules.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software unit executed by a processor, or in a combination of the two. The software elements may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A power steering system for an electric mining truck, comprising:
a first steering assist unit and a second steering assist unit;
a first control device is arranged in the first steering power assisting unit and is electrically connected with the second steering power assisting unit;
the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when the second steering power assisting unit is detected to stop providing steering power for the electric mining truck.
2. The system of claim 1, wherein the first steering assist unit further comprises a first power supply, an electric switch, and a first steering power unit;
the electric switch is respectively and electrically connected with the first power supply device and the first steering power device, and is also electrically connected with the first control device;
the first control device is used for controlling the electric switch to be closed when the second power steering unit is detected to stop providing power steering for the electric mining truck; after the electric switch is closed, the first power supply device supplies power to the first steering power device, so that the first steering power device provides steering assistance for the electric mining truck.
3. The system of claim 2, wherein the first steering assist unit further has a one-way valve disposed therein;
and the steering power output by the first steering power device flows to the electric mining truck after passing through the one-way valve.
4. The system of claim 2, wherein the first steering power unit has a first oil pump and a first electric motor disposed therein;
the first oil pump is electrically connected with the first motor;
the first motor is used for driving the first oil pump to provide steering assistance for the electric mining truck.
5. The system according to claim 1, characterized in that the second steering assist unit is provided therein with a second control device, a second power supply device and a second steering power device;
the second control device is respectively and electrically connected with the second power supply device and the second steering power device;
the second power supply device is used for supplying power to the second control device;
the second control device is used for controlling the second steering power device to provide steering assistance for the electric mining truck.
6. The system of claim 5, wherein the first control device is electrically connected to the second power supply device;
and the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when receiving the power supply stopping information sent by the second power supply device.
7. The system of claim 5, wherein the first control device is electrically connected to the second control device;
the first control device is used for controlling the first steering assistance unit to provide steering assistance for the electric mining truck when the second control device is detected to be faulty.
8. The system of claim 5, wherein the first control device is electrically connected to the second power supply device and the second control device, respectively;
the first control device is used for controlling the first steering power assisting unit to provide steering power for the electric mining truck when receiving the power supply stopping information sent by the second power supply device and/or detecting that the second control device fails.
9. The system according to claim 8, wherein the first control device is specifically configured to control the first steering assist unit to provide steering assist to the electric mining truck when receiving the power supply stopping information sent by the second power supply device and/or when detecting that the second control device fails, if it is determined that the vehicle speed of the electric mining truck is greater than a preset speed threshold.
10. An electric mining truck, comprising:
an electric mining truck body and a steering assist system as claimed in any one of claims 1 to 9;
the steering power assisting system is mechanically connected with the electric mining truck body;
the power steering system is used for providing power steering for the electric mining truck body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310281956.2A CN116176691A (en) | 2023-03-16 | 2023-03-16 | Steering power assisting system of electric mining truck and electric mining truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310281956.2A CN116176691A (en) | 2023-03-16 | 2023-03-16 | Steering power assisting system of electric mining truck and electric mining truck |
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| CN116176691A true CN116176691A (en) | 2023-05-30 |
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| CN202310281956.2A Pending CN116176691A (en) | 2023-03-16 | 2023-03-16 | Steering power assisting system of electric mining truck and electric mining truck |
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| CN112660235A (en) * | 2020-12-28 | 2021-04-16 | 嬴彻科技(浙江)有限公司 | Redundant power steering system, control method thereof and vehicle |
| CN216301214U (en) * | 2021-07-15 | 2022-04-15 | 浙江瑞立空压装备有限公司 | Controller, control system, steering oil pump and vehicle |
| CN216468062U (en) * | 2021-11-25 | 2022-05-10 | 比亚迪股份有限公司 | Electric control power-assisted steering control system and vehicle |
| CN114524019A (en) * | 2022-03-17 | 2022-05-24 | 南京航空航天大学 | Double-winding double-motor steer-by-wire system of commercial vehicle and control method thereof |
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