CN115892049A - Method, device and controller for power take-off protection of transfer case - Google Patents
Method, device and controller for power take-off protection of transfer case Download PDFInfo
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- CN115892049A CN115892049A CN202211427330.XA CN202211427330A CN115892049A CN 115892049 A CN115892049 A CN 115892049A CN 202211427330 A CN202211427330 A CN 202211427330A CN 115892049 A CN115892049 A CN 115892049A
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
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Abstract
The application discloses a method, a device and a controller for power take-off protection of a transfer case. The method comprises the following steps: in the power takeoff process of the transfer case, receiving the air pressure of an auxiliary air circuit of the whole vehicle sent by an air pressure sensor, and judging whether the air pressure is lower than a preset value; under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, the chassis is controlled to exit a steering mode, the upper vehicle hydraulic lock is controlled to act and lock, and the engine is controlled to recover an idling state; then the auxiliary power taking air valve of the steering loop is controlled to be electrified so as to supply air to the transfer case; judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not; with the power take-off stroke switch and the neutral stroke switch closed, the boarding hydraulic lock is released and the idling state of the engine is released. This application is through when getting power the in-process and appear leaking gas the condition, takes auxiliary circuit power of getting pneumatic valve to the transfer case air feed in order to continue to get power, can improve the stability of transfer case power of getting, improves the security of operation.
Description
Technical Field
The application relates to the technical field of power take-off of transfer cases, in particular to a power take-off protection method, a power take-off protection device and a power take-off protection controller of a transfer case.
Background
A power take-off mode is adopted for a single engine part model of more than 90 tons at present, based on the severe conditions of crane running and working environment, the crane is easy to have the conditions of valve damage, failure and air leakage in the working process, the power input of the crane can be still kept after the valve air leakage fails, and the power take-off continuity becomes a necessary and necessary function. The existing power take-off control logic of the transfer case is that air is supplied to a power take-off gear and a neutral gear of the transfer case through an air circuit, a running function of a bottom disc of the transfer case is in a neutral position, and then power is transmitted to an upper vehicle for operation. In the power take-off process of the existing transfer case, if a certain air valve related to power take-off has a fault and leaks air, the air pressure of an auxiliary air circuit is abnormal, the transfer case is caused to withdraw power take-off, light persons cause the work of the whole transfer case to be stopped, severe persons cause the internal gear of the transfer case to be damaged, and parts of the whole transfer case are damaged. However, in the prior art, a protection method for air leakage caused by a certain air valve fault related to power take-off in the power take-off process of the transfer case is lacked, so that the problems that the power take-off of the transfer case is unstable and the machine is easily damaged in the air leakage in the prior art are caused.
Disclosure of Invention
The embodiment of the application aims to provide a power take-off protection method, a power take-off protection device and a power take-off protection controller for solving the problems that in the prior art, power take-off of a transfer case is unstable and a machine is easily damaged when air leaks.
In order to achieve the above object, a first aspect of the present application provides a power take-off protection method for a transfer case, which is applied to a controller, wherein the controller is respectively in communication with a pneumatic sensor, a chassis, a hydraulic lock of an upper vehicle, an engine and an auxiliary power take-off valve of a steering circuit, and the method includes:
in the power take-off process of the transfer case, the air pressure of an auxiliary air passage of the whole vehicle sent by an air pressure sensor is received;
judging whether the air pressure of the auxiliary air path of the whole vehicle is lower than a preset value or not;
under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, the chassis is controlled to exit a steering mode, the upper vehicle hydraulic lock is controlled to act and lock, and the engine is controlled to recover an idling state;
after the chassis exits the steering mode, the upper vehicle hydraulic lock finishes locking action and the engine recovers an idling state, the auxiliary power take-off air valve of the steering loop is controlled to be electrified so as to supply air to the transfer case;
judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not;
with the power take-off stroke switch and the neutral stroke switch closed, the boarding hydraulic lock is released and the idling state of the engine is released.
In the embodiment of the application, under the condition that the power take-off travel switch and/or the neutral travel switch are not closed, the auxiliary power take-off valve of the steering circuit is continuously controlled to be electrified until the power take-off travel switch and the neutral travel switch are closed.
In an embodiment of the present application, the controller is further in communication with a display screen, and the method further includes:
and sending fault early warning information to a display screen under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value.
In the embodiment of the application, under the condition that the power take-off travel switch and the neutral travel switch are closed, the stop fault early warning information is sent to the display screen.
In an embodiment of the present application, the controller is further in communication with an accelerator of the vehicle, and the method further includes:
and controlling the upper throttle to not respond under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value.
A second aspect of the present application provides a controller, comprising:
a memory configured to store instructions; and
a processor configured to recall instructions from memory and upon execution of the instructions enable a method of power take off protection for a transfer case according to the above.
The third aspect of the present application provides a power take-off protection device for a transfer case, comprising:
a controller according to the above;
the air pressure sensor is communicated with the controller, is configured to monitor the air pressure of the auxiliary air passage of the whole vehicle and sends the air pressure to the controller;
a chassis in communication with the controller configured to receive instructions from the controller and exit the swing mode;
the upper vehicle hydraulic lock is communicated with the controller and is configured to receive the instruction of the controller and complete the locking action;
an engine, in communication with the controller, configured to receive instructions from the controller and resume an idle state;
and the steering loop auxiliary power taking air valve is communicated with the controller and is configured to receive the command of the controller and obtain electricity to supply air to the transfer case.
In an embodiment of the application, the device further comprises a display screen, which is in communication with the controller and is configured to display a fault early warning when the air pressure of the auxiliary air path of the whole vehicle is lower than a preset value, and display a warning removing prompt when the power take-off travel switch and the neutral travel switch are closed.
In an embodiment of the present application, the apparatus further includes an upper throttle, in communication with the controller, and configured to receive an instruction from the controller to disable the upper throttle in response to the pressure of the auxiliary gas path of the entire vehicle being lower than a preset value.
A fourth aspect of the present application provides a machine-readable storage medium having instructions stored thereon for causing a machine to perform a method of power take off protection for a transfer case as described above.
By the technical scheme, the air pressure of the auxiliary air passage of the whole vehicle sent by the air pressure sensor is received in the power take-off process of the transfer case; judging whether the air pressure of an auxiliary air circuit of the whole vehicle is lower than a preset value, controlling the chassis to exit a steering mode, controlling an upper vehicle hydraulic lock to act and lock and controlling an engine to recover an idling state under the condition of being lower than the preset value, and controlling an auxiliary power take-off air valve of a steering loop to be electrified so as to supply air to the transfer case; judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not; with the power take-off travel switch and the neutral travel switch closed, the boarding hydraulic lock is released and the idling state of the engine is released. This application is through when the gas leakage condition appears in the power takeoff in-process, takes the auxiliary circuit power takeoff pneumatic valve to the transfer case air feed in order to continue the power takeoff, can improve the stability of transfer case power takeoff to improve the security of operation.
Additional features and advantages of embodiments of the present application will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the embodiments of the disclosure, but are not intended to limit the embodiments of the disclosure. In the drawings:
FIG. 1 schematically illustrates a flow chart of a method of power take off protection for a transfer case according to an embodiment of the present application;
FIG. 2 schematically illustrates a flow chart of a method of power take off protection for a transfer case according to a particular embodiment of the present application;
FIG. 3 schematically illustrates a block diagram of a controller according to an embodiment of the present application;
FIG. 4 schematically illustrates a block diagram of a transfer case power take-off protection device according to an embodiment of the application.
Description of the reference numerals
401. Controller 402 chassis
403. Getting-on hydraulic lock 404 engine
405. Steering loop auxiliary power takeoff air valve 406 display screen
407. Getting-on accelerator
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the specific embodiments described herein are only used for illustrating and explaining the embodiments of the present application and are not used for limiting the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope claimed in the present application.
FIG. 1 schematically illustrates a flow chart of a method of power take-off protection of a transfer case according to an embodiment of the application. As shown in fig. 1, embodiments of the present application provide a method of power take-off protection for a transfer case that may include the following steps.
In the embodiment of the present application, the transfer case is a device that distributes power of the engine. The transfer case can output the generated power to the rear axle or simultaneously output the power to the front axle and the rear axle, so that the power in the engine is reasonably distributed. The gas pressure sensor is an instrument for measuring the absolute pressure of gas, and is mainly suitable for physical experiments related to the gas pressure, such as gas laws and the like. In the power takeoff process of the existing transfer case, if one air valve related to power takeoff has a fault and leaks air, the air pressure of an auxiliary air circuit is abnormal, the transfer case is caused to withdraw power takeoff, light persons cause the whole vehicle to stop working, severe persons cause the gears in the transfer case to be damaged, and parts of the whole vehicle are damaged. In the scheme, before the power take-off of the transfer case, the whole vehicle needs to be parked firstly, the engine is ignited to enter an idling state, the gearbox is in a neutral state, and the hand brake is pulled up. After the power take-off switch is pressed down, the power take-off is successful, and the power take-off operation is carried out. In the power takeoff process of the transfer case, the air pressure sensor is adopted to collect the air pressure of the auxiliary air passage of the whole vehicle in real time, and whether the air pressure has abnormal conditions or not is monitored in real time. And the controller receives the air pressure data of the auxiliary gas circuit of the whole automobile sent by the air pressure sensor in real time. Whether the air leakage condition exists in the power take-off process of the transfer case can be judged in real time by monitoring the air pressure of the auxiliary air circuit of the whole transfer case in real time, and the power take-off stability of the transfer case is improved.
And 102, judging whether the air pressure of the auxiliary air path of the whole vehicle is lower than a preset value or not.
In the embodiment of the application, the controller judges whether the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value after receiving the air pressure of the auxiliary air passage of the whole vehicle sent by the air pressure sensor. The preset value refers to a preset critical value of air pressure. And under the condition that the air pressure of the auxiliary air path of the whole vehicle is higher than a preset value, the fact that no power take-off is abnormal is shown, and the power take-off can be normally carried out. Under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, the air leakage condition of the auxiliary air passage is indicated, and corresponding protective measures need to be taken at the moment. Whether the air pressure of the auxiliary air circuit of the whole vehicle is lower than a preset value or not can be judged, whether the air leakage condition exists or not can be judged, and the power take-off stability of the transfer case is improved.
And 103, under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, controlling the chassis to exit from a steering mode, controlling the hydraulic lock of the upper vehicle to act and lock, and controlling the engine to recover the idle state.
In the embodiment of the application, before the power take-off of the transfer case, the whole vehicle needs to be parked, the engine is ignited to enter an idling state, the gearbox is in a neutral state, and the hand brake is pulled up. And under the condition that the air pressure of the auxiliary air path of the whole vehicle is lower than a preset value, the air leakage condition is shown. In order to ensure the stability and safety of power take-off of the transfer case, the controller can control the chassis to exit from a steering mode, control the upper vehicle hydraulic lock to act and lock and control the engine to recover an idling state. Through the rapid processing to the power take-off gas leakage problem of transfer case, can improve the security of transfer case power take-off process, can also guarantee the continuation of construction simultaneously, avoid stopping the huge economic loss that the construction caused because of the valve that the on-the-spot vehicle lacks the change.
And step 104, controlling the auxiliary power take-off air valve of the steering loop to be electrified to supply air to the transfer case after the chassis exits the steering mode, the upper vehicle hydraulic lock finishes the locking action and the engine recovers the idle state.
In the embodiment of the application, the steering circuit auxiliary power take-off air valve refers to an air valve which can control power take-off on the steering circuit. When the air leakage condition occurs, the controller controls the chassis to exit the steering mode, controls the upper vehicle hydraulic lock to act and lock, and controls the engine to return to the idle state. After the control action is finished, the controller can control the auxiliary power taking valve of the steering loop to be electrified so as to supply air to the transfer case, so that the transfer case can continue to take power. Adopt to turn to the supplementary power takeoff pneumatic valve of return circuit and control when leaking, when not influencing the function that turns to, can provide effectual power takeoff control and gas leakage protection.
And 105, judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed.
In the embodiment of the application, the power take-off travel switch and the neutral travel switch are both switches arranged on the transfer case. The power take-off travel switch may refer to a switch on the transfer case that determines whether a power take-off travel is being performed. The neutral travel switch may refer to a switch on the transfer case that determines whether the transmission is in a neutral state. Under the condition that the power take-off travel switch and the neutral travel switch of the transfer case are both closed, it is indicated that the auxiliary power take-off air valve of the steering loop works normally, the power take-off of the transfer case is kept normal, and air leakage protection is implemented. Under the condition that a power take-off travel switch and a neutral travel switch of the transfer case are not closed, the air leakage protection is not completely implemented at the moment, and the air leakage condition still exists. The auxiliary power take-off valve of the steering circuit can be continuously controlled to be electrified until the power take-off travel switch and the neutral travel switch of the transfer case are closed. Whether the power take-off travel switch and the neutral travel switch of the transfer case are closed or not is judged, whether an air leakage condition exists or not can be further judged when power take-off is carried out through a side road, and the power take-off stability of the transfer case can be improved.
And 106, under the condition that the power take-off travel switch and the neutral travel switch are closed, releasing the hydraulic lock of the vehicle and releasing the idling state of the engine.
In the embodiment of the application, when the auxiliary gas circuit leaks gas abnormally, the controller controls the chassis to exit from the steering mode, controls the upper vehicle hydraulic lock to act and lock, and controls the engine to recover the idle state. Under the condition that the power take-off travel switch and the neutral travel switch are both closed, the air leakage protection is completely implemented, and the transfer case can continue to take power. At this time, the controller can release the locking state of the upper vehicle hydraulic lock and release the idling state of the engine, and the transfer case continues to take power. The states of the upper hydraulic lock and the engine are adjusted according to the closing states of the power take-off travel switch and the neutral travel switch of the transfer case, so that the power take-off stability of the transfer case can be improved.
By the technical scheme, the whole vehicle auxiliary gas circuit air pressure sent by the air pressure sensor is received in the power takeoff process of the transfer case; judging whether the air pressure of an auxiliary gas circuit of the whole vehicle is lower than a preset value, controlling the chassis to exit a steering mode, controlling an upper vehicle hydraulic lock to act and lock and controlling the engine to recover an idling state under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value, and then controlling an auxiliary power take-off valve of a steering loop to be electrified so as to supply gas to the transfer case; judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not; with the power take-off travel switch and the neutral travel switch closed, the boarding hydraulic lock is released and the idling state of the engine is released. This application is through when the gas leakage condition appears in the power takeoff in-process, takes the auxiliary circuit power takeoff pneumatic valve to the transfer case air feed in order to continue the power takeoff, can improve the stability of transfer case power takeoff, improves the security of operation.
In an embodiment of the present application, the method may further include:
and under the condition that the power take-off travel switch and/or the neutral travel switch are not closed, the auxiliary power take-off valve of the steering loop is continuously controlled to be electrified until the power take-off travel switch and the neutral travel switch are closed.
Specifically, when the transfer case is not being supplied with air, the power take-off travel switch and the neutral travel switch of the transfer case are in an on state. During the process of supplying air to the distribution box, the airflow can push the power take-off travel switch and the neutral travel switch to be switched from the open state to the closed state. When the air leakage condition is judged to exist, the controller controls the auxiliary power taking air valve of the steering loop to be electrified, and power can be supplied to the transfer case. When the power of the transfer case is completely obtained, the power take-off travel switch and the neutral travel switch of the transfer case are in a closed state. Under the condition that a power take-off travel switch and/or a neutral travel switch of the transfer case are not closed, the situation that air leakage protection is not completely implemented at the moment and air leakage still exists is explained. At the moment, the auxiliary power taking air valve of the steering loop is continuously controlled to be electrified, and air is continuously supplied to the transfer case until the power taking travel switch and the neutral travel switch are closed, namely, the air leakage protection is completely implemented. The air supply is continuously carried out on the transfer case under the condition that the power take-off travel switch and/or the neutral travel switch are not closed, so that air leakage protection can be completely implemented, and the power take-off stability of the transfer case is improved.
In an embodiment of the present application, the controller is further in communication with a display screen, and the method may further include:
and sending fault early warning information to a display screen under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value.
Specifically, the display screen can be the power limiter display screen of going up, sets up on whole car for show trouble early warning information exists in transfer case power takeoff in-process in order to remind operating personnel to have the gas circuit trouble problem. Under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value, the controller sends fault early warning information to the display screen, the display screen receives an instruction sent by the controller and displays the fault early warning information to remind an operator of the existence of the gas circuit fault at the moment, so that the operator can notice the fault problem and take corresponding protective measures.
In an embodiment of the present application, the method may further include:
and under the condition that the power take-off travel switch and the neutral travel switch are closed, sending failure early warning information to a display screen.
Specifically, under the condition that the air pressure of the auxiliary air path of the whole vehicle is lower than the preset value, the controller sends fault early warning information to the display screen, and the display screen receives an instruction sent by the controller and displays the fault early warning information. At the moment, the controller controls the auxiliary power taking air valve of the steering loop to be electrified so as to supply air to the separation box. During the air supply process to the transfer case, the power take-off travel switch and the neutral travel switch of the transfer case are switched from the open state to the closed state. Under the condition that the power take-off travel switch and the neutral travel switch of the transfer case are both closed, it is indicated that the auxiliary power take-off air valve of the steering loop works normally, the power take-off of the transfer case is kept normal, and air leakage protection is implemented. The controller sends the failure early warning stopping information to the display screen, and the display screen quits the failure early warning information prompt after receiving the instruction sent by the controller. Whether the power take-off process of the transfer case at the moment has abnormal conditions or not can be timely mastered by operators through displaying the fault early warning information and stopping the fault early warning information in real time on the display screen, and the power take-off process of the transfer case can be timely processed when the abnormal conditions exist, so that the stability and the safety of the power take-off of the transfer case are improved.
In an embodiment of the present application, the controller is further in communication with an upper throttle, and the method may further include:
and controlling the accelerator on the vehicle not to respond under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value.
Specifically, under the condition that the air pressure of the auxiliary air path of the whole vehicle is judged to be lower than a preset value, the air leakage of the auxiliary air path is abnormal, and corresponding protective measures need to be taken at the moment. The controller can control the chassis to exit a steering mode, control the upper vehicle hydraulic lock to perform action locking and control the engine to return to an idle state. Meanwhile, the controller can control the upper throttle to not respond, and the safety problem caused by the response of the upper throttle after air leakage is avoided.
By the technical scheme, the whole vehicle auxiliary gas circuit air pressure sent by the air pressure sensor is received in the power takeoff process of the transfer case; judging whether the air pressure of an auxiliary gas circuit of the whole vehicle is lower than a preset value, controlling the chassis to exit a steering mode, controlling an upper vehicle hydraulic lock to act and lock and controlling the engine to recover an idling state under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value, and then controlling an auxiliary power take-off valve of a steering loop to be electrified so as to supply gas to the transfer case; judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not; with the power take-off stroke switch and the neutral stroke switch closed, the boarding hydraulic lock is released and the idling state of the engine is released. This application is through when the gas leakage condition appears in the power takeoff in-process, takes the auxiliary circuit power takeoff pneumatic valve to the transfer case air feed in order to continue the power takeoff, can improve the stability of transfer case power takeoff, improves the security of operation.
FIG. 2 schematically illustrates a flow chart of a method of power take off protection for a transfer case according to a particular embodiment of the present application. As shown in FIG. 2, a particular embodiment of the present application provides a method of power take off protection for a transfer case that may include the following steps.
S201, pulling up a hand brake when the vehicle is in a neutral position;
s202, taking power from the transfer case of the whole vehicle;
s203, monitoring the air pressure of an auxiliary gas circuit of the whole vehicle by a vehicle body controller;
s204, judging whether the air pressure of the auxiliary air path is normal, if not, entering S205, and if so, entering S213;
s205, the vehicle body controller controls to exit a steering mode;
s206, reminding a driver of a gas circuit fault by the getting-on operation screen;
s207, automatically controlling the getting-on locking hydraulic pressure;
s208, controlling the rotating speed of the engine to keep idling;
s209, controlling the auxiliary power take-off valve of the steering loop to be powered;
s210, judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed, if so, entering S211, and if not, returning to S207;
s211, releasing the hydraulic lock of the getting-on vehicle and releasing the idle speed control of the getting-on vehicle;
s212, reminding the client to recover the normal power take-off;
and S213, normally operating power take-off.
Specifically, before the power is taken out from the transfer case, the whole vehicle is parked, the engine is ignited to keep an idling state, the transmission case is in a neutral position, and the hand brake is pulled up. And pressing the power take-off switch to successfully take power off and carry out power-on operation. And the vehicle controller monitors the air pressure of the auxiliary air passage of the whole vehicle in real time through the air pressure sensor in the power take-off process. When the air pressure of the auxiliary air path is higher than the critical value M, the power taking is normal. When the air pressure of the auxiliary air path is lower than a critical value M, judging that the air leakage of the auxiliary air path is abnormal, and controlling the chassis to exit a steering mode, automatically controlling the locking hydraulic pressure of the upper vehicle and controlling the rotating speed of the engine to keep idling by the vehicle control unit; the getting-on operation screen reminds a driver of the gas circuit fault. The controller controls the chassis to exit a steering mode, automatically controls the getting-on locking hydraulic pressure and controls the rotating speed of the engine to keep idling, and the three actions can be carried out simultaneously. After the conditions are finished, the vehicle control unit controls the auxiliary power taking air valve of the steering loop to be electrified to supply air to the transfer case. And judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed, if so, indicating that the auxiliary power take-off valve works normally, the power take-off of the transfer case is kept normal, and the air leakage protection is implemented, if not, indicating that the air leakage protection is not implemented completely, and continuously controlling the auxiliary power take-off valve of the steering loop to be electrified until the power take-off travel switch and the neutral travel switch of the transfer case are closed. When the power take-off travel switch of the transfer case and the neutral travel switch are detected to be closed, the controller releases the locking function of the hydraulic lock of the loading machine, the idling control of the engine is released, the loading display warns to quit, the customer is prompted to continue operating, and the power take-off is recovered to be normal.
Fig. 3 schematically shows a block diagram of a controller according to an embodiment of the present application. As shown in fig. 3, an embodiment of the present application provides a controller, which may include:
a memory 310 configured to store instructions; and
a processor 320 configured to recall instructions from the memory 310 and upon execution of the instructions enable the above-described method of transfer case power take off protection.
Specifically, in the embodiment of the present application, the processor 320 may be configured to:
in the power takeoff process of the transfer case, receiving the air pressure of an auxiliary air circuit of the whole vehicle sent by an air pressure sensor;
judging whether the air pressure of the auxiliary air path of the whole vehicle is lower than a preset value or not;
under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, the chassis is controlled to exit a steering mode, the upper vehicle hydraulic lock is controlled to act and lock, and the engine is controlled to recover an idling state;
after the chassis exits the steering mode, the upper vehicle hydraulic lock finishes locking action and the engine recovers an idling state, the auxiliary power take-off air valve of the steering loop is controlled to be electrified so as to supply air to the transfer case;
judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not;
with the power take-off stroke switch and the neutral stroke switch closed, the boarding hydraulic lock is released and the idling state of the engine is released.
Further, the processor 320 may also be configured to:
and under the condition that the power take-off travel switch and/or the neutral travel switch are not closed, the auxiliary power take-off valve of the steering loop is continuously controlled to be electrified until the power take-off travel switch and the neutral travel switch are closed.
Further, the processor 320 may also be configured to:
the controller is also in communication with the display screen, the method further comprising:
and sending fault early warning information to a display screen under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value.
Further, the processor 320 may also be configured to:
and sending the stop fault early warning information to the display screen under the condition that the power take-off travel switch and the neutral travel switch are closed.
Further, the processor 320 may also be configured to:
the controller is also in communication with the get-on throttle, the method further comprising:
and controlling the accelerator on the vehicle not to respond under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value.
By the technical scheme, the whole vehicle auxiliary gas circuit air pressure sent by the air pressure sensor is received in the power takeoff process of the transfer case; judging whether the air pressure of an auxiliary gas circuit of the whole vehicle is lower than a preset value, controlling the chassis to exit a steering mode, controlling an upper vehicle hydraulic lock to act and lock and controlling the engine to recover an idling state under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value, and then controlling an auxiliary power take-off valve of a steering loop to be electrified so as to supply gas to the transfer case; judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not; with the power take-off travel switch and the neutral travel switch closed, the boarding hydraulic lock is released and the idling state of the engine is released. This application is through when the gas leakage condition appears in the power takeoff in-process, takes the auxiliary circuit power takeoff pneumatic valve to the transfer case air feed in order to continue the power takeoff, can improve the stability of transfer case power takeoff, improves the security of operation.
FIG. 4 schematically illustrates a block diagram of a transfer case power take-off protection device according to an embodiment of the application. As shown in fig. 4, the present application further provides a device for power take-off protection of a transfer case, which may include:
the controller 401 as described above;
an air pressure sensor 402, in communication with the controller 401, configured to monitor a vehicle auxiliary air circuit air pressure and send to the controller 401;
a chassis 403, in communication with the controller 401, configured to receive instructions from the controller 401 and exit the swing mode;
an upper vehicle hydraulic lock 404, in communication with the controller 401, configured to receive a command from the controller 401 and complete a locking action;
an engine 405, in communication with the controller 401, configured to receive instructions from the controller 401 and resume an idle state;
a steering circuit auxiliary power take off valve 406, in communication with the controller 401, is configured to receive commands from the controller 401 and to energize the transfer case.
Specifically, the air pressure sensor 402 is disposed near the auxiliary air path, and is configured to monitor air pressure of the auxiliary air path of the entire vehicle, and send an air pressure value to the controller 401. The chassis 403, the upper hydraulic lock 404, the engine 405 and the steering circuit auxiliary power take-off valve 406 are respectively communicated with the controller 401. In the power takeoff process of the transfer case, the controller 401 receives the air pressure of the auxiliary air passage of the whole vehicle sent by the air pressure sensor 402. The controller 401 judges whether the air pressure of the whole vehicle auxiliary air circuit is lower than a preset value, and under the condition that the air pressure of the whole vehicle auxiliary air circuit is lower than the preset value, the controller 401 controls the chassis 403 to exit a steering mode, controls the upper vehicle hydraulic lock 404 to act and lock, controls the engine 405 to recover an idling state, and controls the steering loop auxiliary power take-off air valve 406 to be electrified so as to supply air to the transfer case; judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not; with the power take-off stroke switch and the neutral stroke switch closed, the controller 401 releases the get-on hydraulic lock 404 and releases the idle state of the engine 405.
As shown in fig. 4, in the embodiment of the present application, the apparatus may further include:
and the display screen 406 is communicated with the controller 401 and is configured to display a fault early warning when the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, and display a warning removing prompt when the power take-off travel switch and the neutral travel switch are closed.
Specifically, the display screen 406 is disposed on the entire vehicle and is configured to display the failure warning information and remove the warning prompt. Under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, the controller 401 sends an instruction to the display screen 406, and the display screen 406 displays fault early warning after receiving the instruction sent by the controller 401. Under the condition that the power take-off travel switch and the neutral travel switch are closed, the controller 401 sends an instruction to the display screen 406, and the display screen 406 receives the instruction sent by the controller 401 and then displays a warning removing prompt. The display screen 406 is used for displaying the fault early warning information and stopping the fault early warning information in real time, so that an operator can timely master whether the power take-off process of the transfer case at the moment has abnormal conditions or not, timely processing is carried out when the abnormal conditions exist, and the stability and the safety of the power take-off of the transfer case are improved.
As shown in fig. 4, in the embodiment of the present application, the apparatus may further include:
and the upper vehicle throttle 407 is communicated with the controller 401 and is configured to receive an instruction of the controller 401 to make the upper vehicle throttle non-responsive in the case that the air pressure of the auxiliary air path of the whole vehicle is lower than the preset value.
Specifically, when the air pressure of the auxiliary air passage of the whole vehicle is judged to be lower than the preset value, it is indicated that the air leakage of the auxiliary air passage is abnormal, and corresponding protective measures need to be taken at the moment. The controller 401 may control the chassis 402 to exit the steering mode, control the upper vehicle hydraulic lock 403 to perform action locking, and control the engine 404 to return to the idle state. Meanwhile, the controller can control the accelerator 407 to not respond, so that the safety problem caused by the response of the accelerator 407 after air leakage is generated is avoided.
By the technical scheme, the air pressure of the auxiliary air passage of the whole vehicle sent by the air pressure sensor is received in the power take-off process of the transfer case; judging whether the air pressure of an auxiliary gas circuit of the whole vehicle is lower than a preset value, controlling the chassis to exit a steering mode, controlling an upper vehicle hydraulic lock to act and lock and controlling the engine to recover an idling state under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value, and then controlling an auxiliary power take-off valve of a steering loop to be electrified so as to supply gas to the transfer case; judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not; with the power take-off stroke switch and the neutral stroke switch closed, the boarding hydraulic lock is released and the idling state of the engine is released. This application is through when the gas leakage condition appears in the power takeoff in-process, takes the auxiliary circuit power takeoff pneumatic valve to the transfer case air feed in order to continue the power takeoff, can improve the stability of transfer case power takeoff, improves the security of operation.
Embodiments of the present application also provide a machine-readable storage medium having instructions stored thereon for causing a machine to perform the above-described method for transfer case power take off protection.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both permanent and non-permanent, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A power take-off protection method for a transfer case is applied to a controller, the controller is respectively communicated with an air pressure sensor, a chassis, an upper vehicle hydraulic lock, an engine and a steering loop auxiliary power take-off air valve, and the method is characterized by comprising the following steps:
in the power takeoff process of the transfer case, receiving the air pressure of the auxiliary gas circuit of the whole vehicle sent by the air pressure sensor;
judging whether the air pressure of the auxiliary gas circuit of the whole vehicle is lower than a preset value;
under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value, controlling the chassis to exit a steering mode, controlling the upper vehicle hydraulic lock to act and lock, and controlling the engine to recover an idle state;
after the chassis exits from a steering mode, the upper vehicle hydraulic lock finishes a locking action and the engine returns to an idling state, the auxiliary power taking air valve of the steering loop is controlled to be electrified so as to supply air to the transfer case;
judging whether a power take-off travel switch and a neutral travel switch of the transfer case are closed or not;
and when the power take-off travel switch and the neutral travel switch are closed, releasing the upper vehicle hydraulic lock and releasing the idling state of the engine.
2. The method of claim 1, further comprising:
and under the condition that the power take-off travel switch and/or the neutral travel switch are not closed, continuously controlling the auxiliary power take-off air valve of the steering circuit to be electrified until the power take-off travel switch and the neutral travel switch are closed.
3. The method of claim 1, wherein the controller is further in communication with a display screen, the method further comprising:
and sending fault early warning information to the display screen under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value.
4. The method of claim 3, further comprising:
and sending failure early warning information to the display screen under the condition that the power take-off travel switch and the neutral travel switch are closed.
5. The method of claim 1, wherein the controller is further in communication with an on board throttle, the method further comprising:
and controlling the upper vehicle accelerator not to respond under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than the preset value.
6. A controller, comprising:
a memory configured to store instructions; and
a processor configured to invoke the instructions from the memory and when executing the instructions to enable a method of transfer case power take off protection according to any one of claims 1 to 5.
7. A transfer case power take-off protection device, comprising:
a controller according to claim 6;
an air pressure sensor in communication with the controller, configured to monitor a vehicle auxiliary air circuit air pressure and send to the controller;
a chassis in communication with the controller configured to receive instructions from the controller and exit a swing mode;
the upper vehicle hydraulic lock is communicated with the controller and is configured to receive the instruction of the controller and complete the locking action;
an engine in communication with the controller configured to receive instructions from the controller and resume an idle state;
a steering circuit auxiliary power take-off valve in communication with the controller and configured to receive commands from the controller and to energize the transfer case.
8. The apparatus of claim 7, further comprising:
and the display screen is communicated with the controller and is configured to display fault early warning under the condition that the air pressure of the auxiliary air passage of the whole vehicle is lower than a preset value, and display and remove early warning prompts under the condition that the power take-off travel switch and the neutral travel switch are closed.
9. The apparatus of claim 7, further comprising:
and the upper vehicle accelerator is communicated with the controller and is configured to receive an instruction of the controller to enable the upper vehicle accelerator not to respond under the condition that the air pressure of the auxiliary gas circuit of the whole vehicle is lower than the preset value.
10. A machine readable storage medium having stored thereon instructions for causing a machine to perform the method of transfer case power take off protection of any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211427330.XA CN115892049A (en) | 2022-11-15 | 2022-11-15 | Method, device and controller for power take-off protection of transfer case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211427330.XA CN115892049A (en) | 2022-11-15 | 2022-11-15 | Method, device and controller for power take-off protection of transfer case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115892049A true CN115892049A (en) | 2023-04-04 |
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ID=86480872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211427330.XA Pending CN115892049A (en) | 2022-11-15 | 2022-11-15 | Method, device and controller for power take-off protection of transfer case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115892049A (en) |
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2022
- 2022-11-15 CN CN202211427330.XA patent/CN115892049A/en active Pending
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