阅读说明：本技术 一种行走系统的健康检测方法、行走系统及推土机 (Health detection method of walking system, walking system and bulldozer ) 是由 姜友山 余丽艳 金轲 赵建军 于 2021-08-10 设计创作，主要内容包括：本发明涉及行走系统的健康检测方法、行走系统及推土机。行走系统的健康检测方法包括：在发动机启动后,控制器控制各挡电磁阀通电第一预设时间,然后对各挡电磁阀对应的离合器的压力进行检测,并判断各挡对应的离合器中是否存在压力异常的离合器,若是,则在显示器上显示“某挡位压力异常”；若否,则在显示器上显示“系统压力正常”。本发明能够在发动机启动后对各挡离合器进行压力自检,从而提前发现异常,使驾驶人员能够根据显示器上显示的“某挡位压力异常”的提示信息对相应挡位的离合器及时做出处理,确保作业时各挡离合器的压力处于正常状态,有效保护各挡离合器摩擦片,增加整机寿命。(The invention relates to a health detection method of a walking system, the walking system and a bulldozer. The health detection method of the walking system comprises the following steps: after the engine is started, the controller controls the electromagnetic valves of all gears to be electrified for a first preset time, then the pressure of the clutches corresponding to the electromagnetic valves of all gears is detected, whether the clutches with abnormal pressure exist in the clutches corresponding to all gears is judged, and if yes, the 'pressure of a certain gear is abnormal' is displayed on the display; if not, displaying that the system pressure is normal on the display. The invention can carry out pressure self-check on each gear clutch after the engine is started, thereby finding abnormality in advance, enabling a driver to timely process the clutch of the corresponding gear according to the prompt information of abnormal pressure of a certain gear displayed on the display, ensuring the pressure of each gear clutch to be in a normal state during operation, effectively protecting each gear clutch friction plate and prolonging the service life of the whole machine.)

1. A health detection method of a walking system is characterized by comprising the following steps: after the engine is started, the controller controls the electromagnetic valves of all gears to be electrified for a first preset time, then the pressure of the clutches corresponding to the electromagnetic valves of all gears is detected, whether the clutches with abnormal pressure exist in the clutches corresponding to all gears is judged, and if yes, the 'pressure of a certain gear is abnormal' is displayed on the display; if not, displaying that the system pressure is normal on the display.

2. The method for detecting the health of a traveling system according to claim 1, further comprising, after determining that a pressure-abnormal clutch exists in the clutches corresponding to the respective gears and before displaying "a certain gear pressure abnormality" on the display:

controlling the current of the electromagnetic valve corresponding to the clutch with abnormal pressure to increase a preset value, then judging whether the pressure of the clutch is recovered to a normal range, and if so, keeping the current; if not, further judging whether the current of the electromagnetic valve reaches the maximum allowable current, if so, displaying 'the pressure of a certain gear is abnormal' on a display; if not, the current of the electromagnetic valve is continuously controlled to increase the preset value.

3. The health detection method of a walking system of claim 1, wherein the controller controls the brake solenoid valve to be opened and controls the steering solenoid valve and the speed change solenoid valve to be closed while displaying "pressure abnormality in a certain gear" on the control display.

4. The health detection method of a walking system of any one of claims 1-3, further comprising: after the whole vehicle is powered on and before the engine is started, the controller controls the electromagnetic valves of all gears to be powered on for a first preset time, then whether the loops of the electromagnetic valves of all gears are normal or not is judged, and if yes, the 'engine can be started' is displayed on the display; if not, displaying that the current loop of a certain gear is abnormal on the display, and controlling the engine not to be started normally.

5. The health detection method of a walking system of any one of claims 1-3, further comprising: after the engine is locked, the controller controls the electromagnetic valves of all gears to be electrified for a first preset time, then the pressure of the clutches corresponding to the electromagnetic valves of all gears is detected, whether the clutches with abnormal pressure exist in the clutches corresponding to all gears is judged, and if yes, the pressure of a certain gear is displayed on the display; if not, displaying that the system pressure is normal on the display.

6. The method for detecting the health of a traveling system according to claim 5, wherein the solenoid valve of each gear is controlled to be energized again for the first preset time every second preset time after it is determined that there is no abnormal-pressure clutch among the clutches corresponding to each gear, so that repeated self-checking is performed.

7. The method for detecting the health of a traveling system according to claim 5, further comprising, after determining that a pressure-abnormal clutch exists in the clutches corresponding to the respective gears and before displaying "a certain gear pressure abnormality" on the display:

controlling the current of the electromagnetic valve corresponding to the clutch with abnormal pressure to increase a preset value, then judging whether the pressure of the clutch is recovered to a normal range, and if so, keeping the current; if not, further judging whether the current of the electromagnetic valve reaches the maximum allowable current, if so, displaying 'the pressure of a certain gear is abnormal' on a display; if not, the current of the electromagnetic valve is continuously controlled to increase the preset value.

8. The health detection method of a walking system of claim 5, wherein the controller controls the brake solenoid valve to be opened and controls the steering solenoid valve and the speed change solenoid valve to be closed while displaying "pressure abnormality in a certain gear" on the control display.

9. A walking system, characterized in that the method for health detection of a walking system according to any one of claims 1 to 8 is used.

10. A bulldozer, characterized in that it comprises a walking system as claimed in claim 9.

Technical Field

The invention relates to the technical field of bulldozers, in particular to a health detection method of a walking system, the walking system and the bulldozer.

Background

A bulldozer is an earthwork machine capable of excavating, transporting and discarding rock soil. The working environment of the bulldozer is generally severe, various faults are easy to occur to an electric control walking system of the bulldozer, in the prior art, no effective detection method is available for the faults of the electric control walking system, the faults are not predictable, and preparation work cannot be made in advance, so that the hydraulic elements, the clutch friction plates and other hardware are damaged abnormally, and the service life of the whole bulldozer is shortened.

Disclosure of Invention

The invention aims to provide a health detection method of a traveling system, the traveling system and a bulldozer, which can find abnormality in advance, ensure that the pressure of each gear clutch is in a normal state during operation, effectively protect each gear clutch friction plate and prolong the service life of the whole bulldozer.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of health detection of a walking system, comprising: after the engine is started, the controller controls the electromagnetic valves of all gears to be electrified for a first preset time, then the pressure of the clutches corresponding to the electromagnetic valves of all gears is detected, whether the clutches with abnormal pressure exist in the clutches corresponding to all gears is judged, and if yes, the 'pressure of a certain gear is abnormal' is displayed on the display; if not, displaying that the system pressure is normal on the display.

Preferably, the method further includes, after determining that a pressure-abnormal clutch exists among the clutches corresponding to the respective gears and before displaying "a certain gear pressure abnormality" on the display:

controlling the current of the electromagnetic valve corresponding to the clutch with abnormal pressure to increase a preset value, then judging whether the pressure of the clutch is recovered to a normal range, and if so, keeping the current; if not, further judging whether the current of the electromagnetic valve reaches the maximum allowable current, if so, displaying 'the pressure of a certain gear is abnormal' on a display; if not, the current of the electromagnetic valve is continuously controlled to increase the preset value.

Preferably, the controller controls the brake solenoid valve to be opened and controls the steering solenoid valve and the transmission solenoid valve to be closed while displaying "a certain shift pressure abnormality" on the control display.

Preferably, the method further comprises the following steps: after the whole vehicle is powered on and before the engine is started, the controller controls the electromagnetic valves of all gears to be powered on for a first preset time, then whether the loops of the electromagnetic valves of all gears are normal or not is judged, and if yes, the 'engine can be started' is displayed on the display; if not, displaying that the current loop of a certain gear is abnormal on the display, and controlling the engine not to be started normally.

Preferably, the method further comprises the following steps: after the engine is locked, the controller controls the electromagnetic valves of all gears to be electrified for a first preset time, then the pressure of the clutches corresponding to the electromagnetic valves of all gears is detected, whether the clutches with abnormal pressure exist in the clutches corresponding to all gears is judged, and if yes, the pressure of a certain gear is displayed on the display; if not, displaying that the system pressure is normal on the display.

Preferably, after determining that there is no clutch with abnormal pressure among the clutches corresponding to each gear, the solenoid valve of each gear is controlled to be energized again for the first preset time at intervals of the second preset time to perform repeated self-checking.

Preferably, the method further includes, after determining that a pressure-abnormal clutch exists among the clutches corresponding to the respective gears and before displaying "a certain gear pressure abnormality" on the display:

controlling the current of the electromagnetic valve corresponding to the clutch with abnormal pressure to increase a preset value, then judging whether the pressure of the clutch is recovered to a normal range, and if so, keeping the current; if not, further judging whether the current of the electromagnetic valve reaches the maximum allowable current, if so, displaying 'the pressure of a certain gear is abnormal' on a display; if not, the current of the electromagnetic valve is continuously controlled to increase the preset value.

Preferably, the controller controls the brake solenoid valve to be opened and controls the steering solenoid valve and the transmission solenoid valve to be closed while displaying "a certain shift pressure abnormality" on the control display.

A walking system adopts the health detection method of the walking system.

A bulldozer comprising a walking system as described above.

The invention has the beneficial effects that:

the health monitoring method of the traveling system provided by the invention can carry out pressure self-check on the clutches of all gears after the engine is started, thereby finding out abnormality in advance, enabling a driver to timely process the clutches of the corresponding gears according to the prompt information of abnormal pressure of a certain gear displayed on the display, ensuring that the pressure of the clutches of all gears is in a normal state during operation, effectively protecting the friction plates of the clutches of all gears, and prolonging the service life of the whole machine.

Furthermore, current loop self-checking can be carried out on the electromagnetic valves of all gears after the whole engine is electrified and before the engine is started, so that abnormality can be found in advance, a driver can timely process the current loops of the corresponding gears according to prompt information of 'abnormality of the current loop of a certain gear' displayed on a display, the current loops of the electromagnetic valves of all gears are in a normal state during operation, and operation faults are reduced.

Furthermore, the pressure self-checking can be carried out on each gear clutch after the engine is locked, the valve blocking caused by accumulation of impurities in oil of the electromagnetic valve of the gear which is not commonly used can be prevented, and the failure rate of the whole machine is reduced.

Drawings

Fig. 1 is a first schematic flow chart of a health detection method of a walking system according to an embodiment of the present invention;

FIG. 2 is a second flowchart illustrating a method for detecting health of a walking system according to an embodiment of the present invention;

fig. 3 is a third schematic flow chart of a health detection method of a walking system according to an embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, an embodiment of the present invention provides a method for detecting health of a walking system, including: after the whole vehicle is electrified, the controller controls each gear electromagnetic valve to be electrified for a first preset time, then whether a loop of each gear electromagnetic valve is normal is judged, and if yes, the display displays that the engine can be started; if not, displaying that the current loop of a certain gear is abnormal on the display, and controlling the engine not to be started normally.

By the method, the current loop self-checking can be carried out on the electromagnetic valve of each gear after the whole vehicle is electrified, so that abnormality can be found in advance, a driver can timely process the current loop of the corresponding gear according to prompt information of abnormality of the current loop of a certain gear displayed on a display, the current loop of the electromagnetic valve of each gear is ensured to be in a normal state during operation, and operation faults are reduced.

As shown in fig. 2, the method for detecting health of a walking system according to an embodiment of the present invention further includes: after the engine is started, the controller controls the electromagnetic valves of all gears to be electrified for a first preset time, then the pressure of the clutches corresponding to the electromagnetic valves of all gears is detected, whether the clutches with abnormal pressure exist in the clutches corresponding to all gears is judged, and if yes, the 'pressure of a certain gear is abnormal' is displayed on the display; if not, displaying that the system pressure is normal on the display.

By the method, the pressure self-check can be performed on the clutches of all gears after the engine is started, so that abnormality can be found in advance, a driver can timely process the clutches of the corresponding gears according to prompt information of abnormal pressure of a certain gear displayed on a display, the pressure of the clutches of all gears is ensured to be in a normal state during operation, friction plates of the clutches of all gears are effectively protected, and the service life of the whole engine is prolonged.

Preferably, with continued reference to fig. 2, after determining that there is a pressure-abnormal clutch in the clutches corresponding to each gear, and before displaying "pressure abnormality in a certain gear" on the display, the method further includes: controlling the current of the electromagnetic valve corresponding to the clutch with abnormal pressure to increase a preset value, then judging whether the pressure of the clutch is recovered to a normal range, and if so, keeping the current; if not, further judging whether the current of the electromagnetic valve reaches the maximum allowable current, if so, displaying 'the pressure of a certain gear is abnormal' on a display; if not, the current of the electromagnetic valve is continuously controlled to increase the preset value.

When the pressure of the clutch is abnormal, automatic adjustment is performed firstly, so that the pressure requirement of the clutch can be met to the maximum extent; and the clutch sends out an alarm prompt in a state that the normal range is not recovered when the current of the electromagnetic valve reaches the maximum value, so that a driver can timely make treatment, and the friction plate of the clutch is prevented from being damaged.

Preferably, the controller controls the brake solenoid valve to be opened and controls the steering solenoid valve and the transmission solenoid valve to be closed while displaying "pressure abnormality in a certain gear" on the control display. The gear shifting and steering gear is not connected, power is not output, and the whole machine is in a braking state, namely the whole machine cannot work, so that the damage to hardware such as hydraulic elements, clutches and the like is avoided.

As shown in fig. 3, the method for detecting health of a walking system according to an embodiment of the present invention further includes: after the engine is locked, the controller controls the electromagnetic valves of all gears to be electrified for a first preset time, then the pressure of the clutches corresponding to the electromagnetic valves of all gears is detected, whether the clutches with abnormal pressure exist in the clutches corresponding to all gears is judged, and if yes, the pressure of a certain gear is displayed on the display; if not, displaying that the system pressure is normal on the display.

By the method, pressure self-checking can be performed on each gear clutch after the engine is locked, valve blocking caused by accumulation of impurities in oil of the electromagnetic valve of the gear which is not commonly used can be prevented, and the failure rate of the whole machine is reduced.

Preferably, with reference to fig. 3, after it is determined that there is no abnormal pressure clutch in the clutches corresponding to each gear, the electromagnetic valve of each gear is controlled to be energized again for the first preset time every second preset time, so as to perform repeated self-checking, and improve reliability of detection.

Preferably, with continued reference to fig. 3, after determining that there is a pressure-abnormal clutch in the clutches corresponding to each gear, and before displaying "pressure abnormality in a certain gear" on the display, the method further includes: controlling the current of the electromagnetic valve corresponding to the clutch with abnormal pressure to increase a preset value, then judging whether the pressure of the clutch is recovered to a normal range, and if so, keeping the current; if not, further judging whether the current of the electromagnetic valve reaches the maximum allowable current, if so, displaying 'the pressure of a certain gear is abnormal' on a display; if not, the current of the electromagnetic valve is continuously controlled to increase the preset value.

When the pressure of the clutch is abnormal, automatic adjustment is performed firstly, so that the pressure requirement of the clutch can be met to the maximum extent; and the clutch sends out an alarm prompt in a state that the normal range is not recovered when the current of the electromagnetic valve reaches the maximum value, so that a driver can timely make treatment, and the friction plate of the clutch is prevented from being damaged.

Preferably, the controller controls the brake solenoid valve to be opened and controls the steering solenoid valve and the transmission solenoid valve to be closed while displaying "pressure abnormality in a certain gear" on the control display. The gear shifting and steering gear is not connected, power is not output, and the whole machine is in a braking state, namely the whole machine cannot work, so that the damage to hardware such as hydraulic elements, clutches and the like is avoided.

The embodiment of the invention also provides a walking system, and the health detection method of the walking system is adopted. By adopting the method, the system pressure can be ensured to be in a normal state during operation, and operation faults are reduced.

The embodiment of the invention also provides a bulldozer, which comprises the walking system. By adopting the traveling system, the clutch friction plates of the gears can be effectively protected, and the service life of the whole machine is prolonged.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.