A single-drum roller control system

Abstract

The present invention relates to the field of single-drum roller control. The present invention provides a single-drum roller control system, which includes a travel gear switch and an electro-hydraulic proportional travel pump. The travel gear switch selects the travel gear of the single-drum roller. There are ten gears on the travel gear switch, and each gear corresponds to ten gears with different driving speed ranges. The whole machine controller is configured to execute when the electro-control handle is in any one of the forward gear and the reverse gear: based on the working mode of the engine of the single-drum roller, the displacement of the electro-control handle in its current gear, and the obtained travel gear of the single-drum roller, by controlling the input current of the electro-hydraulic proportional travel pump and the input current of the travel motor, to control the rotational speed of the travel motor so as to adjust the driving speed of the single-drum roller. The present invention is used to adjust the driving speed according to actual needs during the working process to adapt to various working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of single-drum roller control, and particularly to a single-drum roller control system. Background Art

[0002] A single-drum roller is a road construction equipment. The single-drum roller belongs to the category of road equipment in construction machinery and is widely used for the filling and compaction operations of large-scale engineering projects such as high-grade highways, railways, airport runways, dams, and stadiums. It can roll sandy, semi-viscous, and viscous soils, subgrade stabilized soils, and asphalt concrete pavement layers.

[0003] The currently used single-drum rollers have the following problems: (1) They cannot automatically adjust the speed range according to actual needs, making it impossible to meet the actual requirements of various working conditions; (2) When starting, the single-drum roller generally starts the engine by directly pressing the start switch, which increases the risk of starting; (3) Generally, the operator of the single-drum roller needs to manually turn on or off the vibrating rod according to the traveling speed to turn on or off its vibrating function, which increases the complexity of operation. Moreover, in the working conditions where the traveling speed needs to be frequently changed, manually turning on or off the vibrating rod will also affect the control accuracy to a certain extent.

[0004] With the application of intelligence in construction machinery and the entry of a new generation of operators into the industry, it is extremely urgent to realize automatically adjusting various working traveling speeds of the single-drum roller according to actual needs to adapt to various working conditions, improve the convenience of operation and the control accuracy of the single-drum roller. In addition, the safe start of the single-drum roller is related to safety issues. Effectively improving the safety of the single-drum roller is also one of the key issues that R & D personnel should focus on. Summary of the Invention

[0005] In view of the above problems, the present invention provides a single-drum roller control system for realizing automatically adjusting various working traveling speeds of the single-drum roller according to actual needs to adapt to various working conditions, improving the convenience of operation and the control accuracy of the single-drum roller, and effectively improving the starting safety.

[0006] On the one hand, the present invention provides a control system for a single-drum roller, including a traveling motor, an overall machine controller, and an electronic control handle of the single-drum roller. The system further includes a traveling gear switch and an electro-hydraulic proportional traveling pump. The traveling gear switch is used to select the traveling gear of the single-drum roller. There are ten gears on the traveling gear switch, and each gear corresponds to a different driving speed range. The overall machine controller is connected to the traveling gear switch for obtaining the traveling gear of the single-drum roller selected by the traveling gear switch. The overall machine controller is electrically connected to the traveling motor for controlling the input current of the traveling motor. The overall machine controller is electrically connected to the electro-hydraulic proportional traveling pump for controlling the input current of the electro-hydraulic proportional traveling pump. The electro-hydraulic proportional traveling pump is connected to the traveling motor for assisting in controlling the rotational speed of the traveling motor.

[0007] The overall machine controller is configured to perform the following steps when the electronic control handle is in any one of the forward gear and the reverse gear: Based on the working mode of the engine of the single-drum roller, the displacement of the electronic control handle in its current gear, and the obtained traveling gear of the single-drum roller, by controlling the input current of the electro-hydraulic proportional traveling pump and the input current of the traveling motor, to control the rotational speed of the traveling motor so as to adjust the traveling speed of the single-drum roller.

[0008] Furthermore, the overall machine controller is configured to perform the following steps:

[0009] When the working mode of the engine of the single-drum roller is the energy-saving working mode and the electronic control handle is in the parking gear, the overall machine controller controls the start of the engine of the single-drum roller through the engine ECU of the single-drum roller.

[0010] Furthermore, the system is also equipped with a first switch;

[0011] The first switch is connected to the overall machine controller; the traveling motor is equipped with a rotational speed sensor; the overall machine controller is connected to the rotational speed sensor for collecting the real-time rotational speed of the traveling motor in real time;

[0012] The overall machine controller is configured to:

[0013] Calculate the real-time traveling speed of the single-drum roller based on the collected real-time rotational speed of the traveling motor; and when the first switch is in the open state, control the automatic start and stop of the vibration function of the single-drum roller according to the calculated real-time traveling speed of the single-drum roller.

[0014] Furthermore, the controlling the automatic start and stop of the vibration function of the single-drum roller according to the calculated real-time traveling speed of the single-drum roller includes:

[0015] When the real-time traveling speed of the single-drum roller is less than the minimum value in the preset traveling speed range of the single-drum roller, control the vibration function of the single-drum roller to stop or not start;

[0016] When the real-time traveling speed of the single-drum roller is greater than the maximum value in the preset traveling speed range of the single-drum roller, control the vibration function of the single-drum roller to stop or not start;

[0017] When the real-time traveling speed of the single-drum roller meets the preset traveling speed range of the single-drum roller, control the vibration function of the single-drum roller to start.

[0018] Furthermore, based on the working mode of the engine of the single-drum roller, the displacement of the electro-control handle in its current gear, and the obtained traveling gear of the single-drum roller, by controlling the input current of the electro-hydraulic proportional travel pump and the input current of the travel motor, control the rotational speed of the travel motor to adjust the traveling speed of the single-drum roller, including:

[0019] When the working mode of the engine is the minimum working mode and the electro-control handle is pushed to any one of the forward gear and the reverse gear:

[0020] If the travel gear switch is in any one of the first gear to the fourth gear, the whole machine controller performs the following operations: input the minimum input current of the travel motor to the travel motor;

[0021] And based on the adjustment displacement of the electro-control handle, control the magnitude of the input current of the electro-hydraulic proportional travel pump to control the rotational speed of the travel motor, so that the single-drum roller travels within the traveling speed range corresponding to the obtained traveling gear of the single-drum roller;

[0022] If the travel gear switch is in any one of the fifth gear to the seventh gear, the whole machine controller performs the following operations:

[0023] Input the maximum input current of the electro-hydraulic proportional travel pump to the electro-hydraulic proportional travel pump;

[0024] And control the magnitude of the input current of the travel motor based on the adjustment displacement of the electro-control handle to control the rotational speed of the travel motor, so that the single-drum roller travels within the traveling speed range corresponding to the obtained traveling gear of the single-drum roller;

[0025] If the travel gear switch is in any one of the eighth gear to the tenth gear, the whole machine controller performs the following operations:

[0026] Input the maximum input current of the electro-hydraulic proportional travel pump to the electro-hydraulic proportional travel pump;

[0027] Control the magnitude of the input current of the travel motor based on the adjustment displacement of the electro-control handle to control the rotational speed of the travel motor, and control the single-drum roller to travel within the traveling speed range corresponding to the seventh gear;

[0028] When the engine is in the energy-saving working mode and the electro-control handle is pushed to any one of the forward gear and the reverse gear:

[0029] If the travel gear switch is in any one of the first gear to the sixth gear, the operation executed by the whole machine controller is the same as the operation when the engine is in the minimum working mode and the travel gear switch is in any one of the first gear to the fourth gear;

[0030] If the travel gear switch is in any one of the seventh gear to the tenth gear, the operation executed by the whole machine controller is the same as the operation when the engine is in the minimum working mode and the travel gear switch is in any one of the fifth gear to the seventh gear;

[0031] When the engine is in the maximum working mode and the electro-control handle is pushed to any one of the forward gear and the reverse gear:

[0032] If the travel gear switch is in any one of the first gear to the seventh gear, the operation executed by the whole machine controller is the same as the operation when the engine is in the minimum working mode and the travel gear switch is in any one of the first gear to the fourth gear;

[0033] If the travel gear switch is in any one of the eighth gear to the tenth gear, the operation executed by the whole machine controller is the same as the operation when the engine is in the minimum working mode and the travel gear switch is in any one of the fifth gear to the seventh gear;

[0034] Among them, there are ten gears on the travel gear switch, namely the first gear, the second gear, the third gear, the fourth gear, the fifth gear, the sixth gear, the seventh gear, the eighth gear, the ninth gear and the tenth gear;

[0035] Furthermore, based on the working mode of the engine of the single-drum roller, the displacement of the electro-control handle in its gear position, and the obtained travel gear of the single-drum roller, by controlling the input current of the electro-hydraulic proportional travel pump and the input current of the travel motor, to control the rotational speed of the travel motor, so as to adjust the traveling speed of the single-drum roller, it further includes:

[0036] When the engine is in the energy-saving working mode and the electro-control handle is pushed to any one of the forward gear and the reverse gear:

[0037] If the travel gear switch is in any one of the first gear to the sixth gear, the operation executed by the whole machine controller is the same as the operation when the engine is in the minimum working mode and the travel gear switch is in any one of the first gear to the fourth gear;

[0038] If the travel gear switch is in any one of the seventh to tenth gears, the operations performed by the whole machine controller are the same as those when the travel gear switch is in any one of the fifth to seventh gears and the engine is in the minimum working mode.

[0039] Furthermore, based on the working mode of the engine of the single-drum roller, the displacement of the electro-control handle in its current gear, and the obtained travel gear of the single-drum roller, by controlling the input current of the electro-hydraulic proportional travel pump and the input current of the travel motor, the rotation speed of the travel motor is controlled to adjust the traveling speed of the single-drum roller, and it further includes:

[0040] When the working mode of the engine is the maximum working mode and the electro-control handle is pushed to any one of the forward gear and the reverse gear: If the travel gear switch is in any one of the first to seventh gears, the operations performed by the whole machine controller are the same as those when the travel gear switch is in any one of the first to fourth gears and the engine is in the minimum working mode; If the travel gear switch is in any one of the eighth to tenth gears, the operations performed by the whole machine controller are the same as those when the travel gear switch is in any one of the fifth to seventh gears and the engine is in the minimum working mode.

[0041] Furthermore, the travel gear switch is also provided with a neutral gear. When the travel gear switch is in the neutral gear, the whole machine controller controls the traveling speed of the single-drum roller to be zero.

[0042] Furthermore, the whole machine controller is further configured to perform the following steps:

[0043] When the engine of the single-drum roller is in any one of the energy-saving working mode, the maximum working mode, and the minimum working mode:

[0044] When the electro-control handle is pushed to the parking gear, control the engine of the single-drum roller to automatically switch to the idle state;

[0045] When the electro-control handle is pushed to the neutral gear and the electro-control handle is not moved out of the neutral gear within 10 seconds, control the engine of the single-drum roller to automatically switch to the idle state.

[0046] Furthermore, the system further includes a display, which is connected to the whole machine controller and is used to display the traveling speed of the single-drum roller and the preset traveling speed range of the single-drum roller.

[0047] Advantageous effects: (1) By setting multiple travel gears in the present invention, each travel gear corresponds to a different traveling speed range, which helps to adjust the traveling speed according to actual needs during the working process to adapt to various working conditions;

[0048] (2) The present invention controls the engine to start in the parking gear in the energy-saving working mode through the whole machine controller, which helps to improve the safety of the engine start of the single-drum roller.

[0049] (3) The present invention is provided with an automatic start-stop vibration function switch, and can automatically control the start and stop of the vibration function of the single-drum roller according to the preset driving speed range, without manual intervention, which helps to improve the convenience of operation and the accuracy of control during the construction process, and helps to improve the work efficiency.

[0050] In addition, the design principle of the present invention is reliable, the structure is simple, and it has a very wide application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0052] Figure 1 It is the electrical principle block diagram of an embodiment of the control system of the single-drum roller described in the present invention.

[0053] Figure 2 It is the curve graph showing that the input current of the electro-hydraulic proportional travel pump described in the present invention is proportional to the displacement.

[0054] Figure 3 It is the curve graph showing that the input current of the travel motor described in the present invention is proportional to the displacement.

[0055] Figure 4 It is the electrical principle block diagram of an embodiment of the control system of the single-drum roller described in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0056] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0057] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0058] Such as Figure 1As shown, the present invention provides an embodiment of a single-drum roller control system. In this embodiment, the single-drum roller is provided with a selection switch for selecting the working mode of the engine, and the working modes of the engine include: maximum (MAX) working mode, energy-saving (ECO) working mode, and minimum (MIN) working mode.

[0059] The single-drum roller is also provided with an overall machine controller and an electronic control handle. The electronic control handle is equipped with a parking gear, a neutral gear, a forward gear, and a reverse gear. Among them, the electronic control handle has a displacement amount in the forward gear and the reverse gear. The overall machine controller is connected to the electronic control handle for obtaining the gear position and collecting the displacement amount of the electronic control handle in the forward gear and the reverse gear when the forward gear and reverse gear signals are obtained.

[0060] The single-drum roller control system provided in this embodiment includes a travel motor 3, an overall machine controller 4, and an electronic control handle 5 of the single-drum roller. The system also includes a travel gear switch 1 and an electro-hydraulic proportional travel pump. The travel gear switch 1 is used to select the travel gear of the single-drum roller. There are ten gears on the travel gear switch 1, and each gear corresponds to a different driving speed range. The overall machine controller is connected to the travel gear switch 1 for obtaining the travel gear of the single-drum roller selected by the travel gear switch 1. The overall machine controller is electrically connected to the travel motor 3 for controlling the input current of the travel motor 3. The overall machine controller 4 is electrically connected to the electro-hydraulic proportional travel pump 2 for controlling the input current of the electro-hydraulic proportional travel pump 2. The electro-hydraulic proportional travel pump 2 is connected to the travel motor 3 for controlling the rotation speed of the travel motor 3 based on the input current.

[0061] The overall machine controller 4 is configured to perform the following steps when the electronic control handle 5 is in any one of the forward gear and the reverse gear: Based on the working mode of the engine of the single-drum roller, the displacement amount of the electronic control handle 5 in its current gear position, and the obtained travel gear of the single-drum roller, by controlling the input current of the electro-hydraulic proportional travel pump 2 and the input current of the travel motor 3, to control the rotation speed of the travel motor 3 so as to adjust the driving speed of the single-drum roller.

[0062] Among them, as Figure 2 shown, when the electro-hydraulic proportional travel pump 2 is working normally, within an input current range (for example, the allowable operating input current range is 225 mA to 600 mA), outside this input current range, the electro-hydraulic proportional travel pump cannot work normally. Within this input current range, the input current of the electro-hydraulic proportional travel pump is proportional to the displacement of the electro-hydraulic proportional travel pump, that is, the displacement increases as the input current increases.

[0063] As Figure 3As shown, when the travel motor 3 is operating normally, it corresponds to an input current range (for example, the allowable operating input current range is 225 mA to 600 mA). Outside this input current range, the travel motor cannot operate normally. Within this input current range, the input current of the travel motor is inversely proportional to the displacement of the travel motor, that is, the displacement decreases as the input current increases.

[0064] The electro-hydraulic proportional travel pump is used to control the oil supply of the travel motor, and thus control the rotational speed of the travel motor.

[0065] The larger the displacement of the electro-hydraulic proportional travel pump 2, that is, the larger the input amount to the travel motor 3 (that is, the oil amount provided for the travel motor 3), the larger the oil amount provided by the electro-hydraulic proportional travel pump 2 for the travel motor 3 under the condition that the displacement of the travel motor 3 remains unchanged, and the higher the rotational speed of the travel motor 3.

[0066] For example, the displacement of the travel motor is 100 ml / s. When the travel motor receives 100 ml of hydraulic oil, it rotates 1 circle. If the displacement of the electro-hydraulic proportional travel pump is 300 ml / s, that is, it outputs 300 ml of hydraulic oil to the travel motor per second, so that the rotational speed of the travel motor is 3 circles per second.

[0067] Under the condition that the oil amount provided by the electro-hydraulic proportional travel pump 2 for the travel motor 3 remains unchanged, the smaller the displacement of the travel motor 3, the faster the rotational speed.

[0068] In this embodiment, there are ten gears on the travel gear switch 1, which is only exemplary. The staff can set the number of gears according to actual needs.

[0069] In this embodiment, the ten gears are: the first gear, the second gear, the third gear, the fourth gear, the fifth gear, the sixth gear, the seventh gear, the eighth gear, the ninth gear, and the tenth gear. Among them, for example, the driving speed corresponding to the first gear is 0 to 1 km / h, the driving speed corresponding to the second gear is 0 to 2 km / h, the driving speed corresponding to the third gear is 0 to 3 km / h, the driving speed corresponding to the fourth gear is 0 to 4 km / h, the driving speed corresponding to the fifth gear is 0 to 5 km / h, the driving speed corresponding to the sixth gear is 0 to 6 km / h, the driving speed corresponding to the seventh gear is 0 to 7 km / h, the driving speed corresponding to the eighth gear is 0 to 8 km / h, the driving speed corresponding to the ninth gear is 0 to 9 km / h, and the driving speed corresponding to the tenth gear is 0 to 10 km / h.

[0070] When in use, by selecting the switch to select the energy-saving working mode of the engine of the single-drum roller and pushing the electric control handle 5 to the parking gear, the whole machine controller 4 controls the start of the engine of the single-drum roller through the engine ECU of the single-drum roller, thus increasing the safety of starting the single-drum roller.

[0071] After the engine is started, the operating mode of the engine is selected by a selection switch.

[0072] When the operating mode of the engine is the MIN operating mode and the electro-control handle 5 is pushed to any one of the forward gear and the reverse gear:

[0073] If the travel gear switch 1 is in any one of the first gear to the fourth gear, the machine controller 4 performs the following operations:

[0074] Input the minimum input current of the travel motor 3 to the travel motor 3 to make the displacement of the travel motor 3 the largest;

[0075] Based on the adjustment displacement of the electro-control handle 5, by controlling the magnitude of the input current of the electro-proportional travel pump 2, that is, controlling the magnitude of the displacement of the electro-proportional travel pump 2, to adjust the oil quantity provided by the electro-proportional travel pump 2 for the travel motor 3, so as to control the rotational speed of the travel motor 3, so that the single-drum roller travels within the driving speed range corresponding to the travel gear.

[0076] If the travel gear switch 1 is in any one of the fifth gear to the seventh gear, the machine controller 4 performs the following operations:

[0077] Input the maximum input current of the electro-proportional travel pump 2 (the maximum input current is the maximum current allowed during the normal operation of the electro-proportional travel pump) to the electro-proportional travel pump 2 to make the displacement of the electro-proportional travel pump 2 the largest, and the oil quantity provided by the electro-proportional travel pump 2 for the travel motor 3 reaches the maximum;

[0078] Based on the adjustment displacement of the electro-control handle 5, control the magnitude of the input current of the travel motor 3, that is, control the magnitude of the displacement of the travel motor 3, to control the rotational speed of the travel motor 3, so that the single-drum roller travels within the driving speed range corresponding to the travel gear.

[0079] If the travel gear switch 1 is in any one of the eighth gear to the tenth gear, the machine controller 4 performs the following operations:

[0080] Input the maximum input current of the electro-proportional travel pump 2 to the electro-proportional travel pump 2 to make the displacement of the electro-proportional travel pump 2 the largest, and the oil quantity provided by the electro-proportional travel pump 2 for the travel motor 3 reaches the maximum;

[0081] Based on the adjustment displacement of the electro-control handle 5, control the magnitude of the input current of the travel motor 3, that is, control the magnitude of the displacement of the travel motor 3, to control the rotational speed of the travel motor 3, but the single-drum roller travels within the driving speed range corresponding to the seventh gear.

[0082] When the engine is in the ECO operating mode and the electro - control handle 5 is pushed to either the forward gear or the reverse gear:

[0083] If the travel gear switch 1 is in any one of the first to sixth gears, the machine controller 4 performs the following operations:

[0084] Input the minimum input current of the travel motor 3 (the minimum input current allowed when the travel motor is running normally) to the travel motor 3 to make the displacement of the travel motor 3 the largest;

[0085] Based on the adjustment displacement of the electro - control handle 5, by controlling the magnitude of the input current of the electro - proportional travel pump 2, that is, controlling the magnitude of the displacement of the electro - proportional travel pump 2, to adjust the oil volume provided by the electro - proportional travel pump 2 for the travel motor 3, so as to control the rotational speed of the travel motor 3, so that the single - drum roller travels within the driving speed range corresponding to the travel gear.

[0086] If the travel gear switch 1 is in any one of the seventh to tenth gears, the machine controller 4 performs the following operations:

[0087] Input the maximum input current of the electro - proportional travel pump 2 to the electro - proportional travel pump 2 to make the displacement of the electro - proportional travel pump 2 the largest, and the oil volume provided by the electro - proportional travel pump 2 for the travel motor 3 reaches the maximum;

[0088] Based on the adjustment displacement of the electro - control handle 5, control the magnitude of the input current of the travel motor 3, that is, control the magnitude of the displacement of the travel motor 3, to control the rotational speed of the travel motor 3, so that the single - drum roller travels within the driving speed range corresponding to the travel gear.

[0089] When the engine is in the MAX operating mode and the electro - control handle 5 is pushed to either the forward gear or the reverse gear:

[0090] If the travel gear switch 1 is in any one of the first to seventh gears, the machine controller 4 performs the following operations:

[0091] Input the minimum input current of the travel motor 3 to the travel motor 3 to make the displacement of the travel motor 3 the largest;

[0092] Based on the adjustment displacement of the electro - control handle 5, by controlling the magnitude of the input current of the electro - proportional travel pump 2, that is, controlling the magnitude of the displacement of the electro - proportional travel pump 2, to adjust the oil volume provided by the electro - proportional travel pump 2 for the travel motor 3, so as to control the rotational speed of the travel motor 3, so that the single - drum roller travels within the driving speed range corresponding to the travel gear.

[0093] If the travel gear switch 1 is in any one of the eighth to tenth gears, the machine controller 4 performs the following operations:

[0094] Input the maximum input current of the electro-hydraulic proportional travel pump 2 to the electro-hydraulic proportional travel pump 2, so that the displacement of the electro-hydraulic proportional travel pump 2 is the largest, and the amount of oil provided by the electro-hydraulic proportional travel pump 2 to the travel motor 3 reaches the maximum;

[0095] Based on the adjustment displacement of the electro-control handle 5, control the magnitude of the input current of the travel motor 3, that is, control the displacement of the travel motor 3, to control the rotational speed of the travel motor 3, so that the single-drum roller travels within the driving speed range corresponding to the travel gear.

[0096] Exemplarily, the travel gear switch 1 is also provided with a zero gear. When the travel gear switch 1 is in the zero gear, the machine controller 4 controls the driving speed of the single-drum roller to be zero.

[0097] Regardless of what operation the operator performs on the single-drum roller, the driving speed of the single-drum roller remains zero, effectively preventing misoperation.

[0098] Exemplarily, the machine controller 4 is further configured to perform the following steps:

[0099] When the engine of the single-drum roller is in any one of the ECO working mode, MAX working mode, and MIN working mode:

[0100] When the electro-control handle 5 is pushed to the parking gear, control the engine of the single-drum roller to automatically switch to the idle state.

[0101] When the electro-control handle 5 is pushed to the neutral gear and the electro-control handle 5 is not moved out of the neutral gear within 10 seconds, control the engine of the single-drum roller to automatically switch to the idle state.

[0102] As Figure 4 shown, the present invention provides another embodiment of a single-drum roller control system. The system is further equipped with a first switch and a display 6. The first switch is connected to the machine controller 4, and the opening and closing of the first switch are used to control the automatic start and stop of the automatic vibration function of the single-drum roller. The travel motor 3 is equipped with a rotational speed sensor 7. The machine controller 4 is connected to the rotational speed sensor 7 for real-time acquisition of the real-time rotational speed of the travel motor 3.

[0103] In use, preset the driving speed range of the single-drum roller through the display 6. For example, the preset speed range for automatically turning on the vibration function is greater than 2 km / h and less than 5 km / h. Turn on the first switch. The rotational speed sensor 7 acquires the real-time rotational speed of the travel motor 3.

[0104] The whole machine controller 4 is configured to calculate the real-time driving speed of the single-drum roller according to the following calculation formula (1) based on the collected real-time speed of the traveling motor 3, and display the calculated real-time driving speed on the display:

[0105] (1)

[0106] Wherein, V is the real-time driving speed, with the unit of km / h; n is the speed of the traveling motor 3 obtained by the speed sensor 7 of the traveling motor 3, with the unit of r / min; i is the drive axle speed ratio; R is the tire driving radius, with the unit of m.

[0107] Control the automatic start and stop of the vibration function of the single-drum roller according to the calculated real-time driving speed of the single-drum roller, including:

[0108] When the real-time driving speed of the single-drum roller is less than the minimum value in the preset driving speed range of the single-drum roller, control the vibration function of the single-drum roller to stop or not start.

[0109] When the real-time driving speed of the single-drum roller is greater than the maximum value in the preset driving speed range of the single-drum roller, control the vibration function of the single-drum roller to stop or not start;

[0110] When the real-time driving speed of the single-drum roller meets the preset driving speed range of the single-drum roller, control the vibration function of the single-drum roller to start.

[0111] For example, if the initial real-time driving speed of the single-drum roller is 1 km / h, then control the vibration function of the single-drum roller not to start.

[0112] If during the driving process, the real-time driving speed of the single-drum roller changes from 1 km / h to greater than 2 km / h and less than 5 km / h, then control the vibration function of the single-drum roller to start.

[0113] If during the driving process, the real-time driving speed of the single-drum roller changes from greater than 2 km / h and less than 5 km / h to less than 2 km / h or greater than 5 km / h, then control the vibration function of the single-drum roller to stop.

[0114] Exemplarily, in the minimum working mode, the engine has four speeds, namely 1200 / 1300 / 1400 / 1500 rp, and the staff can select one of them as the working speed of the engine in the minimum working mode according to actual needs through the display.

[0115] Although the present invention has been described in detail by reference to the accompanying drawings and in conjunction with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope of the present invention. / Any person skilled in the art within the technical scope disclosed by the present invention can easily conceive of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A single-drum roller control system, including the traveling motor of the single-drum roller, the whole machine controller and the electric control handle, Characterized in that, The system further includes a traveling gear switch and an electro-hydraulic proportional traveling pump; The traveling gear switch is used to select the traveling gear of the single-drum roller; There are ten gears on the traveling gear switch, and each gear corresponds to a different driving speed range; The whole machine controller is connected to the traveling gear switch for obtaining the traveling gear of the single-drum roller selected by the traveling gear switch; The whole machine controller is electrically connected to the traveling motor for controlling the input current of the traveling motor; The whole machine controller is electrically connected to the electro-hydraulic proportional traveling pump for controlling the input current of the electro-hydraulic proportional traveling pump; The electro-hydraulic proportional traveling pump is connected to the traveling motor for assisting in controlling the rotational speed of the traveling motor; The whole machine controller is configured to perform the following steps when the electric control handle is in any one of the forward gear and the reverse gear: Based on the working mode of the engine of the single-drum roller, the displacement of the electric control handle in its current gear, and the obtained traveling gear of the single-drum roller, by controlling the input current of the electro-hydraulic proportional traveling pump and the input current of the traveling motor, to control the rotational speed of the traveling motor so as to adjust the traveling speed of the single-drum roller, including; When the working mode of the engine is the minimum working mode and the electric control handle is pushed to any one of the forward gear and the reverse gear: If the traveling gear switch is in any one of the first gear to the fourth gear, the whole machine controller performs the following operations: Input the minimum input current of the traveling motor to the traveling motor; And based on the adjustment displacement of the electric control handle, by controlling the magnitude of the input current of the electro-hydraulic proportional traveling pump, to control the rotational speed of the traveling motor, so that the single-drum roller travels within the driving speed range corresponding to the obtained traveling gear of the single-drum roller; If the traveling gear switch is in any one of the fifth gear to the seventh gear, the whole machine controller performs the following operations: Input the maximum input current of the electro-hydraulic proportional traveling pump to the electro-hydraulic proportional traveling pump; And based on the adjustment displacement of the electric control handle, control the magnitude of the input current of the traveling motor to control the rotational speed of the traveling motor, so that the single-drum roller travels within the driving speed range corresponding to the obtained traveling gear of the single-drum roller; If the traveling gear switch is in any one of the eighth gear to the tenth gear, the whole machine controller performs the following operations: Input the maximum input current of the electro-hydraulic proportional traveling pump to the electro-hydraulic proportional traveling pump; Based on the adjustment displacement of the electric control handle, control the magnitude of the input current of the traveling motor to control the rotational speed of the traveling motor, and control the single-drum roller to travel within the driving speed range corresponding to the seventh gear; When the working mode of the engine is the energy-saving working mode and the electric control handle is pushed to any one of the forward gear and the reverse gear: If the traveling gear switch is in any one of the first gear to the sixth gear, the operations performed by the whole machine controller are the same as those when the engine is in the minimum working mode and the traveling gear switch is in any one of the first gear to the fourth gear; If the travel gear switch is in any one of the seventh to tenth gears, the operations performed by the machine controller are the same as those when the travel gear switch is in any one of the fifth to seventh gears and the engine is in the minimum operating mode; When the engine is in the maximum operating mode and the electro-hydraulic control handle is pushed to either the forward or reverse gear: If the travel gear switch is in any one of the first to seventh gears, the operations performed by the machine controller are the same as those when the travel gear switch is in any one of the first to fourth gears and the engine is in the minimum operating mode; If the travel gear switch is in any one of the eighth to tenth gears, the operations performed by the machine controller are the same as those when the travel gear switch is in any one of the fifth to seventh gears and the engine is in the minimum operating mode; Among them, the travel gear switch has ten gears: the first gear, the second gear, the third gear, the fourth gear, the fifth gear, the sixth gear, the seventh gear, the eighth gear, the ninth gear, and the tenth gear; The maximum input current refers to the maximum current allowed to operate; the minimum input current refers to the minimum current allowed to operate.

2. The single-drum roller control system according to claim 1, characterized in that the machine controller is configured to perform the following steps: When the engine of the single-drum roller is in the energy-saving operating mode and the electro-hydraulic control handle is in the parking gear, the machine controller controls the engine of the single-drum roller to start through the engine ECU of the single-drum roller.

3. The single-drum roller control system according to claim 1, characterized in that the system is also equipped with a first switch; The first switch is connected to the machine controller; The travel motor is equipped with a speed sensor; The machine controller is connected to the speed sensor for real-time acquisition of the real-time speed of the travel motor; The machine controller is configured to: Calculate the real-time travel speed of the single-drum roller based on the real-time speed of the travel motor collected; And when the first switch is in the open state, control the automatic start and stop of the vibration function of the single-drum roller according to the calculated real-time travel speed of the single-drum roller.

4. The single-drum roller control system according to claim 3, characterized in that The controlling the automatic start and stop of the vibration function of the single-drum roller according to the calculated real-time travel speed of the single-drum roller includes: When the real-time travel speed of the single-drum roller is less than the minimum value in the preset single-drum roller travel speed range, control the vibration function of the single-drum roller to stop or not start; When the real-time travel speed of the single-drum roller is greater than the maximum value in the preset single-drum roller travel speed range, control the vibration function of the single-drum roller to stop or not start; When the real-time travel speed of the single-drum roller meets the preset single-drum roller travel speed range, control the vibration function of the single-drum roller to start.

5. The single-drum roller control system according to claim 1, characterized in that The travel gear switch also has a zero gear position. When the travel gear switch is in the zero gear position, the machine controller controls the traveling speed of the single-drum roller to be zero.

6. The single-drum roller control system according to claim 1, wherein, the machine controller is further configured to perform the following steps: when the engine of the single-drum roller is in any one of the energy-saving working mode, the maximum working mode, and the minimum working mode: when the electric control handle is pushed to the parking gear, control the engine of the single-drum roller to automatically switch to the idle state; when the electric control handle is pushed to the neutral gear and the electric control handle is not moved out of the neutral gear within 10 seconds, control the engine of the single-drum roller to automatically switch to the idle state.

7. The single-drum roller control system according to claim 1, wherein, the system further includes a display, which is connected to the machine controller and is used to display the traveling speed of the single-drum roller and the preset traveling speed range of the single-drum roller.

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