CN212250668U - Electric control multi-way valve of unmanned tractor - Google Patents
Electric control multi-way valve of unmanned tractor Download PDFInfo
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- CN212250668U CN212250668U CN202021135286.1U CN202021135286U CN212250668U CN 212250668 U CN212250668 U CN 212250668U CN 202021135286 U CN202021135286 U CN 202021135286U CN 212250668 U CN212250668 U CN 212250668U
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Abstract
The utility model relates to an electric control multi-way valve of an unmanned tractor, which comprises a vehicle manual multi-way valve and an expansion multi-way valve, wherein the vehicle manual multi-way valve and the expansion multi-way valve are connected with each other; the expansion multi-way valve comprises a first expansion interface, a second expansion interface, a two-position three-way valve and at least one expansion three-position four-way valve, wherein the second expansion interface is connected with valve ports of the expansion two-position three-way valve, which can be respectively communicated with the other two valve ports in the valve body, the two-position three-way valve is connected with the two valve ports which are not communicated with each other in the valve body of the expansion three-position four-way valve, the first expansion interface is connected with the expansion three-position four-way valve, an oil path is connected with one of the oil paths between the two-position three-way valve and the expansion three. The utility model discloses an above-mentioned structure, the realization need not dismantle former car, and can form a holistic product, is independent of outside the whole vehicle system.
Description
Technical Field
The utility model relates to a fluid operating system field especially relates to a tractor multiple unit valve.
Background
With the improvement of the scientific and technological level of China, the automation level of the tractor is also improved year by year. Meanwhile, compared with other farming modes such as manpower, animal power and the like, the tractor has sufficient power and extremely high efficiency, and therefore, the tractor becomes the main power for production and working in China. In recent years, in order to further free up the labor, the unmanned technique of tractors has been rapidly developed. Currently, the unmanned technology of tractors is mainly focused on the vehicle body, and the rear farm tool part is less researched. However, in the actual cultivation process, the tractor and the farm tool work integrally, so that the actual cultivation process can be realized. The electric control of the matching of the tractor and the farm tool is urgent, and the hydraulic power output is more important.
The unmanned function of small tractors is small, so that the unmanned operation of large tractors is the focus of current research. For a large tractor, a hydraulic system of the large tractor can be roughly divided into three paths, one path is used for a hydraulic power steering system, the other path is used for lubrication and cooling of a gearbox, and the last path is a hydraulic oil path specially matched with farm tools. The oil circuit can be divided into two parts, one part is used for providing power for lifting the farm tool, the other part is used for outputting hydraulic power, the former is realized by a hydraulic cylinder, and the latter is realized by a multi-way valve. At present, most of multi-way valves installed on tractors are manual multi-way valves, and electromagnetic multi-way valve products are not available. In order to enable the unmanned system to operate on the tractor, the manual multi-way valve needs to be electrically controlled.
The patent discloses an electric proportional load sensitive multi-way valve, and a patent number CN109779993A discloses an electric proportional load sensitive multi-way valve, wherein a proportional solenoid valve and a proportional electromagnet are adopted to control an oil way of a valve plate, so that the valve plate has good flow control performance, the control comfort is greatly improved, and the program control can be realized to meet the unmanned requirement. However, in the implementation process of the scheme, the manual multi-way valve installed on the original vehicle needs to be replaced integrally, and the manual multi-way valve needs to cooperate with the whole vehicle factory to integrally transform and upgrade the hydraulic system of the whole vehicle. This solution cannot be applied to stock tractors.
In order to solve the problem, an expansion scheme aiming at the manual multi-way valve of the stock tractor is needed so as to realize the electric control of the stock tractor. The realization need not dismantle original car, and can form an holistic product, be independent of outside the whole vehicle system.
Disclosure of Invention
The utility model relates to a solve among the prior art manual multiple unit valve of former car installation and carry out holistic replacement, need cooperate with whole car factory, carry out holistic transformation, upgrading to whole car hydraulic system, can't be applied to the problem of stock tractor, provide an automatically controlled multiple unit valve of unmanned tractor, adopt mutually independent and the oil circuit that can amalgamate through manual and autopilot part, solved above-mentioned problem.
The utility model provides an electric control multi-way valve of an unmanned tractor, which comprises a vehicle manual multi-way valve and an expansion multi-way valve, wherein the vehicle manual multi-way valve and the expansion multi-way valve are connected with each other; the expansion multi-way valve comprises a first expansion interface, a second expansion interface, a two-position three-way valve and at least one expansion three-position four-way valve, wherein the second expansion interface is connected with the two-position three-way valve, the two-position three-way valve is connected with the expansion three-position four-way valve, the first expansion interface is connected with the expansion three-position four-way valve, an oil path is connected with one of the oil paths between the two-position three-way valve and the expansion three-position four-way valve in parallel, and the other two valve.
The manual multi-way valve of the vehicle and the expansion multi-way valve are respectively used for manual control and automatic control, manual multi-way valve of the vehicle and the detachable connection of the expansion multi-way valve are adopted, manual and automatic switching of the expansion multi-way valve is realized through the control of the manual multi-way valve of the vehicle, the original vehicle is not required to be detached, and an integral product can be formed and is independent of the whole vehicle system.
The utility model relates to an automatically controlled multiple unit valve of unmanned tractor, as preferred mode, extend three-position cross valve and include first valve port, second valve port, third valve port and fourth valve port, two three-position cross valve includes fifth valve port, sixth valve port and seventh valve port, the fifth valve port is connected first expansion interface, the sixth valve port is connected the second valve port, the seventh valve port is connected the first valve port, third valve port and fourth valve port are used for connecting the agricultural implement;
when the three-position expansion four-way valve is positioned at a first working position, the first valve port, the second valve port, the third valve port and the fourth valve port are not communicated; when the three-position expansion four-way valve is in a second working position, the first valve port is connected with the fourth valve port, and the second valve port is connected with the third valve port; when the three-position expansion four-way valve is positioned at a third working position, the first valve port is connected with the third valve port, and the first valve port is connected with the fourth valve port;
when the two-position three-way valve is at the first working position, the fifth valve port is connected with the sixth valve port; when the two-position three-way valve is at the second working position, the fifth valve port is connected with the seventh valve port.
An automatically controlled multiple unit valve of unmanned tractor, as preferred mode, extend the multiple unit valve and include two at least expansion tribit cross valves, respectively extend and connect in parallel each other between the tribit cross valve.
A automatically controlled multiple unit valve of unmanned tractor, as preferred mode, the manual multiple unit valve of vehicle includes first tribit six-way valve, at least one second tribit six-way valve, first check valve and the second check valve the same with second tribit six-way valve quantity, first tribit six-way valve passes through first check valve and connects the pressure hydraulic fluid port, second tribit six-way valve passes through the second check valve and connects the pressure hydraulic fluid port, first tribit six-way valve and second tribit six-way valve connect the oil return opening respectively, first tribit six-way valve connects second tribit six-way valve, first tribit six-way valve and second tribit six-way valve connect the valve port that the valve port corresponds and connect the oil return opening, first tribit six-way valve is connected first and is extended interface and second and is extended the interface.
The utility model relates to an automatically controlled multiple unit valve of unmanned tractor, as preferred mode, first tribit six-way valve includes first manual valve port, second manual valve port, third manual valve port, fourth manual valve port, fifth manual valve port and sixth manual valve port, first check valve is connected to first manual valve port, pressure hydraulic fluid port is connected to second manual valve port, third manual valve port is connected to the oil return port, fourth manual valve port is connected the second and is expanded the interface, fifth manual valve port is connected the oil return port, sixth manual valve port is connected the first and is expanded the interface;
when the first three-position six-way valve is located at the first working position, the second manual valve port is connected with the fifth manual valve port;
when the first three-position six-way valve is located at the second working position, the first manual valve port is connected with the sixth manual valve port, and the second manual valve port is connected with the fourth manual valve port;
when the first three-position six-way valve is located at the third working position, the first manual valve port is connected with the fourth manual valve port, and the sixth manual valve port is connected with the third manual valve port.
The utility model relates to an automatically controlled multiport valve of unmanned tractor, as preferred mode, second tribit six-way valve includes seventh manual valve port, eighth manual valve port, ninth manual valve port, tenth manual valve port, eleventh manual valve port and twelfth manual valve port, and seventh manual valve port connects the second check valve, and eighth manual valve port connects the pressure hydraulic fluid port, and ninth manual valve port connects the oil return port, and eleventh manual valve port connects the oil return port, and twelfth manual valve port and tenth manual valve port are used for connecting manual agricultural implement;
when the second three-position six-way valve is located at the first working position, the eighth manual valve port is connected with the eleventh manual valve port;
when the second three-position six-way valve is located at the second working position, the seventh manual valve port is connected with the twelfth manual valve port, and the ninth manual valve port is connected with the tenth manual valve port;
when the second three-position six-way valve is located at the third working position, the seventh manual valve port is connected with the tenth manual valve port, and the ninth manual valve port is connected with the twelfth manual valve port.
The utility model relates to an electric control multi-way valve of an unmanned tractor, which is used as a preferred mode and also comprises a controller, wherein the controller is electrically connected with an expansion multi-way valve, the controller comprises an information acquisition module and an information processing module, module and information storage module are assigned to the instruction, the information acquisition module is used for acquireing the kind of current tractor installation agricultural implement, the valve port that agricultural implement state and agricultural implement are connected, the information storage module is used for saving the agricultural implement and accomplishes the required instruction of specific action, the information processing module is used for the agricultural implement action instruction that prestores in the information calling information storage module through the information acquisition module, the instruction is assigned the module and is arranged in sending the instruction information of transferring in the information processing module to corresponding solenoid valve, the information acquisition module is with information acquisition transmission to information processing module, the information processing module is assigned the module through the instruction information of information calling information storage module of collection and transmission for the instruction.
The instruction issuing module sends control information of the farm tool to the expansion multi-way valve, power supply control over the two-position three-way valve and the expansion three-position four-way valve is achieved, and therefore the farm tool action is controlled.
The control method of the electric control multi-way valve of the unmanned tractor comprises the following steps:
s1, the tractor starts to work;
s2, judging whether the unmanned mode is adopted by an operator, if so, switching the first three-position six-way valve to a second working position or a third working position by the operator through a control lever, and enabling the tractor to enter the unmanned mode; if not, the driver keeps the first three-position six-way valve at the first working position through the operating lever, and the controller of the tractor does not supply power to the extended three-position four-way valve and enters a manual operation mode;
s3, connecting farm tools according to the manual driving mode or the automatic driving mode in the step S2, and performing operation;
and S4, finishing the operation of the tractor and stopping the tractor.
A control method of automatically controlled multichannel valve of unmanned tractor, as preferred mode, step S3 specifically includes following step under the unmanned mode:
s31, connecting the farm tool with a third valve port and a fourth valve port of the three-position-expansion four-way valve;
s32, switching the first three-position six-way valve from the first working position to the second working position or the third working position through a tractor operating lever;
s33, judging whether the farm tool needs to be moved or not by the controller, if so, supplying power to the two-position three-way valve and the three-position expansion four-way valve by the controller, controlling the two-position three-way valve to be communicated with the three-position expansion four-way valve, switching the three-position expansion four-way valve from a first working position to a second working position or a third working position, and operating the step S34; if the action is not needed, the controller keeps not supplying power to the two-position three-way valve and the three-position expansion four-way valve, and the step S33 is repeatedly executed;
s34, judging whether the action is finished or not, if so, stopping supplying power to the two-position three-way valve and the three-position expansion four-way valve, and if not, continuously supplying power;
and S35, judging whether the operation is finished, if not, repeating the step S33, and if so, executing the step S4.
A control method of automatically controlled multichannel valve of unmanned tractor, as preferred mode, step S3 specifically includes following step under the manual driving mode:
s35, judging whether the number of the multi-way valves needed by the used farm tool is the sum of the number of the first three-position six-way valve and the number of the second three-position six-way valve, and if so, disconnecting the first expansion interface and the second expansion interface; if not, the connection between the first expansion interface and the second expansion interface is maintained;
s36, mounting the farm tool to a twelfth manual valve port and a tenth manual valve port, and if the number of the multiway valves required by the mounted farm tool is the sum of the number of the first three-position six-way valves and the number of the second three-position six-way valves, mounting the farm tool to a fourth manual valve port and a sixth manual valve port simultaneously;
s37, judging whether the farm tool needs to be moved by a driver, if so, switching the first three-position six-way valve from the first working position to the second working position or the third working position through a tractor operating lever, and operating the step S38; if not, keeping the first three-position six-way valve at the first working position, and repeating the step S37;
s38, judging whether the action is finished or not, and if so, switching the first three-position six-way valve to a first working position; if not, keeping the first three-position six-way valve at the second working position or the third working position;
and S39, judging whether the operation is finished, if not, repeating the step S37, and if so, executing the step S4.
An automatically controlled multiple unit valve of unmanned tractor, in the former oil circuit, oil inlet and oil return opening are connected through hydraulic pressure pipe and the former car of tractor business turn over hydraulic fluid port all the way. And under the state that all the electromagnetic valves are not electrified, the first three-position six-way valve, the second three-position six-way valve, the two-position three-way valve and the expansion three-position four-way valve are all positioned at the first working position, and the oil directly returns to the oil cylinder in the original multi-way valve of the tractor and is positioned at the middle unloading state.
When the hydraulic oil pipe of the farm tool is in manual operation, the hydraulic oil pipe of the farm tool is connected to the second three-position six-way valve of the manual multi-way valve of the vehicle, and the general farm tool needs three hydraulic oil pipes at most, namely, the hydraulic oil pipe is connected with the three second three-position six-way valves. If four paths are needed, the three-position four-way valve is pulled out, the farm tool is connected with the first three-position six-way valve, and when the first three-position six-way valve and the second three-position six-way valve are located at the non-first working position through the operating rod, oil enters the farm tool to drive the farm tool to act.
When the automatic driving is performed, after the farm tool is installed, the first three-position six-way valve is in a non-first working position, oil enters the extended multi-way valve, and if the farm tool needs to act, a certain oil way needs to work at the moment. At the moment, the two-position three-way valve electromagnetic valve is electrified, the controller controls the three-position four-way valve corresponding to the expansion of the oil way to work, one of the corresponding third valve port and the fourth valve port outputs high-pressure oil, the other oil port is an oil return port, and the high-pressure oil required by different actions of different farm implements is different, so that the high-pressure oil needs to be judged in the control system. And after the action of the farm tool is finished, the corresponding two-position three-way valve and the three-position four-way valve return to the original positions, and the action is finished. Some farm implements may require 2, 3 oil lines to be operated sequentially or simultaneously, and these operations are required to be output by the controller.
The utility model discloses beneficial effect as follows:
(1) the manual multi-way valve and the expansion multi-way valve of the vehicle are detachably connected, so that the overall transformation and upgrading of a hydraulic system of the whole vehicle are avoided;
(2) the expanded multi-way valve is detachable, so that when the manual multi-way valve of the vehicle is switched to be manual, enough oil ways are available for connecting agricultural implements;
(3) the original vehicle does not need to be disassembled, and the integrated product can be formed and is independent of the whole vehicle system.
Drawings
FIG. 1 is a schematic view of an electrically controlled multi-way valve for an unmanned tractor;
FIG. 2 is a schematic view of an electric control multi-way valve expanding multi-way valve of an unmanned tractor;
FIG. 3 is a schematic view of an electric control multi-way valve two-position three-way valve of an unmanned tractor;
FIG. 4 is a schematic diagram of an electric control multi-way valve of an unmanned tractor with an expanded three-position four-way valve;
FIG. 5 is a schematic view of a manual multi-way valve of an electric control multi-way valve vehicle of an unmanned tractor;
FIG. 6 is a schematic view of a first three-position, six-way valve of an electrically controlled multiport valve of an unmanned tractor;
FIG. 7 is a schematic view of a second three-position, six-way valve of an electrically controlled multiport valve for an unmanned tractor;
fig. 8 is a flow chart of an electric control multi-way valve control method of the unmanned tractor.
Reference numerals:
1. a vehicle manual multi-way valve; 11. a first three-position, six-way valve; 111. a first manual valve port; 112. a second manual valve port; 113. a third manual valve port; 114. a fourth manual valve port; 115. a fifth manual valve port; 116. a sixth manual valve port; 12. a second three-position six-way valve; 121. a seventh manual valve port; 122. an eighth manual valve port; 123. a ninth manual valve port; 124. a tenth manual valve port; 125. an eleventh manual valve port; 126. a twelfth manual valve port; 13. a first check valve; 14. a second one-way valve; 2. expanding the multi-way valve; 21. a first expansion interface; 22. a second expansion interface; 23. a two-position three-way valve; 231. a fifth valve port; 232. a sixth valve port; 233. a seventh valve port; 24. expanding a three-position four-way valve; 241. a first valve port; 242. a second valve port; 243. a third valve port; 244. and a fourth valve port.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1, an electric control multi-way valve for an unmanned tractor comprises a vehicle manual multi-way valve 1, an expansion multi-way valve 2 and a controller, wherein the vehicle manual multi-way valve 1 and the expansion multi-way valve 2 are connected with each other, and the controller is electrically connected with the expansion multi-way valve 2.
The controller is connected with expanding the multiple unit valve electricity, the controller includes the information acquisition module, the information processing module, module and information storage module are assigned to the instruction, the type that the information acquisition module is used for acquireing current tractor installation agricultural implement, the valve port that agricultural implement state and agricultural implement are connected, the information storage module is used for saving the agricultural implement and accomplishes the required instruction of specific action, the information processing module is arranged in the agricultural implement action instruction that prestores in the information calling information storage module through the information acquisition module, the instruction is assigned the module and is arranged in sending the instruction information of transferring among the information processing module to corresponding solenoid valve, the information acquisition module is with information acquisition transmission to the information processing module, the information processing module is assigned the module through the instruction information of information calling information storage module of acquisition and transmission for the instruction.
The specific control method of the controller is as follows:
1. and acquiring the current mounted farm tool type.
Different implements are attached to the tractor in different ways. The following table shows the types of the farm implements obtained by the connection device of the farm implements and the vehicle, and the connection mode of the farm implements and the tractor can be known, and the information is input by the driver in the system. The table lists the attachment of the different implements to the tractor.
2. And acquiring the working state of the farm tool.
When the vehicle is in the work area and not in the work area, the position that the agricultural implement is located differs, and the following table is the position that different agricultural implements are located under different operating conditions:
3. and triggering a switching instruction.
Like the vehicle, the agricultural implement is only in two states, namely a working state and a non-working state, in the whole working process. The switching of the two states is triggered by the switching of the vehicle operating area. When the vehicle is switched between a working area and a non-working area, the farm tool control unit is triggered to start to issue a farm tool state switching instruction. This information is provided by the upper level autopilot system.
4. And reading the operation instruction.
The operation sequence of the connecting parts is different according to different actions and different connecting parts of the farm tool and the tractor, and the farm tool can be issued with the action command by reading the operation sequence in the storage unit after the switching command is obtained according to the type of the farm tool and the working state of the vehicle. The storage unit stores the following action sequence table, and the action sequences of different farm implements need to be determined in practice. Different farm tool action instructions:
note: the diagram shows the sequence of actions.
5. And executing the action.
Each execution element performs execution of an operation in accordance with the instruction.
As shown in fig. 2, the extended multi-way valve 2 includes a first extended interface 21, a second extended interface 22, a two-position three-way valve 23 and four extended three-position four-way valves 24, the second extended interface 22 is connected to the valve ports of the two-position three-way valve 23 which can be respectively communicated with the other two valve ports in the valve body, the two-position three-way valve 23 is connected to the two valve ports which are not communicated with each other in the valve body of the extended three-position four-way valve 24, the first extended interface 21 is connected to the extended three-position four-way valve 24, the oil path is connected in parallel to one of the oil paths between the two-position three-way valve 23 and the extended three. The three-position four-way valves 24 of each extension are connected in parallel.
As shown in fig. 3 and 4, the three-position expansion four-way valve 24 includes a first valve port 241, a second valve port 242, a third valve port 243 and a fourth valve port 244, the two-position three-way valve 23 includes a fifth valve port 231, a sixth valve port 232 and a seventh valve port 233, the fifth valve port 231 is connected to the first expansion interface 21, the sixth valve port 232 is connected to the second valve port 242, the seventh valve port 233 is connected to the first valve port 241, and the third valve port 243 and the fourth valve port 244 are used for connecting an agricultural implement;
when the three-position-expanding four-way valve 24 is in the first working position, the first valve port 241, the second valve port 242, the third valve port 243 and the fourth valve port 244 are not communicated; when the three-position expansion four-way valve 24 is in the second working position, the first port 241 is connected with the fourth port 244, and the second port 242 is connected with the third port 243; when the three-position expansion four-way valve 24 is in the third working position, the first valve port 241 is connected with the third valve port 243, the first valve port 241 is connected with the fourth valve port 244, in a normal state, the three-position expansion four-way valve 24 works in a neutral position, at the moment, the hydraulic system is in a pressure maintaining state, when the right-side electromagnetic valve works, the valve core moves to the right, at the moment, the hydraulic valve works in the right working condition, when the left-side electromagnetic valve is electrified, the valve core moves to the left, and works in the left.
When the two-position three-way valve 23 is at the first working position, the fifth valve port 231 is connected with the sixth valve port 232; when the two-position three-way valve 23 is in the second working position, the fifth port 231 is connected with the seventh port 233.
As shown in fig. 5, the manual multi-way valve 1 for a vehicle includes a first three-position six-way valve 11, four second three-position six-way valves 12, a first check valve 13, and second check valves 14, the number of which is the same as that of the second three-position six-way valves 12, the first three-position six-way valve 11 is connected to a pressure port through the first check valve 13, the second three-position six-way valve 12 is connected to a pressure port through the second check valve 14, the first three-position six-way valve 11 is connected to the pressure port, the first three-position six-way valve 11 and the second three-position six-way valve are respectively connected to an oil return port, the first three-position six-way valve 11 is connected to the second three-position six-way valve 12, valve ports corresponding to the connection valve ports of the first three-position six-way valve 11 and the second three-position six.
As shown in fig. 6, the first three-position six-way valve 11 includes a first manual valve port 111, a second manual valve port 112, a third manual valve port 113, a fourth manual valve port 114, a fifth manual valve port 115, and a sixth manual valve port 116, the first manual valve port 111 is connected to the first check valve 13, the second manual valve port 112 is connected to the pressure port, the third manual valve port 113 is connected to the oil return port, the fourth manual valve port 114 is connected to the second expansion port 22, the fifth manual valve port 115 is connected to the oil return port, and the sixth manual valve port 116 is connected to the first expansion port 21;
when the first three-position six-way valve 11 is located at the first working position, the second manual valve port 112 is connected with the fifth manual valve port 115;
when the first three-position six-way valve 11 is located at the second working position, the first manual valve port 111 is connected with the sixth manual valve port 116, and the second manual valve port 112 is connected with the fourth manual valve port 114;
when the first three-position six-way valve 11 is located at the third operating position, the first manual valve port 111 is connected to the fourth manual valve port 114, and the sixth manual valve port 116 is connected to the third manual valve port 113.
As shown in fig. 7, the second three-position six-way valve 12 includes a seventh manual valve port 121, an eighth manual valve port 122, a ninth manual valve port 123, a tenth manual valve port 124, an eleventh manual valve port 125 and a twelfth manual valve port 126, the seventh manual valve port 121 is connected to the second check valve 14, the eighth manual valve port 122 is connected to the pressure port, the ninth manual valve port 123 is connected to the oil return port, the eleventh manual valve port 125 is connected to the oil return port, and the twelfth manual valve port 126 and the tenth manual valve port 124 are used for connecting to a manual farm implement;
when the second three-position six-way valve 12 is located at the first working position, the eighth manual valve port 122 is connected to the eleventh manual valve port 125;
when the second three-position six-way valve 12 is located at the second working position, the seventh manual valve port 121 is connected to the twelfth manual valve port 126, and the ninth manual valve port 123 is connected to the tenth manual valve port 124;
when the second three-position six-way valve 12 is located at the third operating position, the seventh manual valve port 121 is connected to the tenth manual valve port 124, and the ninth manual valve port 123 is connected to the twelfth manual valve port 126.
Each valve port and the manual valve port adopt quick inserts. And all oil passages are integrated in a valve block mode.
As shown in fig. 8, a control method of an electric control multi-way valve of an unmanned tractor comprises the following steps:
s1, the tractor starts to work;
s2, judging whether the unmanned mode is adopted by an operator, if so, switching the first three-position six-way valve 11 to a second working position or a third working position by the operator through a control lever to enable the tractor to enter the unmanned mode, namely step S3; if not, the driver keeps the first three-position six-way valve 11 at the first working position through the operating lever, the controller of the tractor does not supply power to the three-position expansion four-way valve 24, and the tractor enters a manual operation mode, namely step S8;
s3, connecting the valve ports, and connecting the farm tool with the third valve port 243 and the fourth valve port 244 of the three-position expansion four-way valve 24;
s4, switching the working position, namely switching the first three-position six-way valve 11 from the first working position to the second working position or the third working position through a tractor operating lever;
s5, the controller judges whether the farm tool needs to act, if so, the controller simultaneously supplies power to the two-position three-way valve 23 and the three-position expansion four-way valve 24, controls the two-position three-way valve 23 to be communicated with the three-position expansion four-way valve 24, switches the three-position expansion four-way valve 24 from the first working position to the second working position or the third working position, and operates the step S6; if the action is not required, the controller keeps not supplying power to the two-position three-way valve 23 and the three-position expansion four-way valve 24, and the step S5 is repeatedly executed;
s6, judging whether the action is finished or not, if so, stopping supplying power to the two-position three-way valve 23 and the three-position expansion four-way valve 24, and if not, continuously supplying power;
and S7, judging whether the operation is finished, if not, repeating the step S5, and if so, executing the step S13.
S8, judging whether the number of the multi-way valves needed by the used farm tool is the sum of the number of the first three-position six-way valve 11 and the number of the second three-position six-way valve 12, and if so, disconnecting the first expansion interface 21 from the second expansion interface 22; if not, the connection between the first expansion interface 21 and the second expansion interface 22 is maintained;
s9, mounting the farm tool to the twelfth manual valve port 126 and the tenth manual valve port 124, and if the number of the multi-way valves required by the mounted farm tool is the sum of the number of the first three-position six-way valve 11 and the number of the second three-position six-way valve 12, mounting the farm tool to the fourth manual valve port 114 and the sixth manual valve port 116 simultaneously;
s10, judging whether the farm tool needs to be moved by a driver, if so, switching the first three-position six-way valve 11 from the first working position to the second working position or the third working position through a tractor operating lever, and operating the step S11; if not, keeping the first three-position six-way valve 11 at the first working position, and repeating the step S10;
s11, judging whether the action is finished or not, and if so, switching the first three-position six-way valve 11 to a first working position; if not, keeping the first three-position six-way valve 11 at the second working position or the third working position;
and S12, judging whether the operation is finished, if not, repeating the step S10, and if so, executing the step S13.
And S13, finishing the operation of the tractor and stopping the tractor.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides an automatically controlled multiple unit valve of unmanned tractor which characterized in that: the vehicle manual multi-way valve comprises a vehicle manual multi-way valve (1) and an expanded multi-way valve (2), wherein the vehicle manual multi-way valve (1) and the expanded multi-way valve (2) are connected with each other; the expansion multi-way valve (2) comprises a first expansion interface (21), a second expansion interface (22), a two-position three-way valve (23) and at least one expansion three-position four-way valve (24), wherein the second expansion interface (22) is connected with the two-position three-way valve (23), the two-position three-way valve (23) is connected with the expansion three-position four-way valve (24), the first expansion interface (21) is connected with the expansion three-position four-way valve (24), an oil path is connected in parallel with one of the oil paths between the two-position three-way valve (23) and the expansion three-position four-way valve (24), and the other two valve ports of the expansion three-position four-way valve (24) are; the three-position expanding four-way valve (24) comprises a first valve port (241), a second valve port (242), a third valve port (243) and a fourth valve port (244), the two-position three-way valve (23) comprises a fifth valve port (231), a sixth valve port (232) and a seventh valve port (233), the fifth valve port (231) is connected with the first expanding interface (21), the sixth valve port (232) is connected with the second valve port (242), the seventh valve port (233) is connected with the first valve port (241), and the third valve port (243) and the fourth valve port (244) are used for connecting farm implements;
when the three-position expanding four-way valve (24) is in a first working position, the first valve port (241), the second valve port (242), the third valve port (243) and the fourth valve port (244) are not communicated; when the three-position expanding four-way valve (24) is in a second working position, the first valve port (241) is connected with the fourth valve port (244), and the second valve port (242) is connected with the third valve port (243); when the three-position-expanding four-way valve (24) is in a third working position, the first valve port (241) is connected with the third valve port (243), and the first valve port (241) is connected with the fourth valve port (244);
when the two-position three-way valve (23) is at a first working position, the fifth valve port (231) is connected with the sixth valve port (232); when the two-position three-way valve (23) is at the second working position, the fifth valve port (231) is connected with the seventh valve port (233).
2. The electric control multi-way valve of the unmanned tractor as claimed in claim 1, wherein: the expansion multi-way valve (2) comprises at least two expansion three-position four-way valves (24), and the expansion three-position four-way valves (24) are connected in parallel.
3. The electric control multi-way valve of the unmanned tractor as claimed in claim 1, wherein: the vehicle manual multi-way valve (1) comprises a first three-position six-way valve (11), at least one second three-position six-way valve (12), a first one-way valve (13) and second one-way valves (14) with the same number as the second three-position six-way valve (12), wherein the first three-position six-way valve (11) is connected with a pressure oil port through the first one-way valve (13), the second three-position six-way valve (12) is connected with a pressure oil port through the second one-way valve (14), the first three-position six-way valve (11) is connected with the pressure oil port, the first three-position six-way valve (11) and the second three-position six-way valve are respectively connected with an oil return port, the first three-position six-way valve (11) is connected with the second three-position six-way valve (12), and valve ports corresponding to the first three-position six-way valve (11) and the second three-position six-way, the first three-position six-way valve (11) is connected with the first expansion interface (21) and the second expansion interface (22).
4. The electric control multi-way valve of the unmanned tractor as claimed in claim 3, wherein: the first three-position six-way valve (11) comprises a first manual valve port (111), a second manual valve port (112), a third manual valve port (113), a fourth manual valve port (114), a fifth manual valve port (115) and a sixth manual valve port (116), the first manual valve port (111) is connected with the first check valve (13), the second manual valve port (112) is connected with the pressure oil port, the third manual valve port (113) is connected with the oil return port, the fourth manual valve port (114) is connected with the second expansion interface (22), the fifth manual valve port (115) is connected with the oil return port, and the sixth manual valve port (116) is connected with the first expansion interface (21);
when the first three-position six-way valve (11) is located at a first working position, the second manual valve port (112) is connected with the fifth manual valve port (115);
when the first three-position six-way valve (11) is located at the second working position, the first manual valve port (111) is connected with the sixth manual valve port (116), and the second manual valve port (112) is connected with the fourth manual valve port (114);
when the first three-position six-way valve (11) is located at the third working position, the first manual valve port (111) is connected with the fourth manual valve port (114), and the sixth manual valve port (116) is connected with the third manual valve port (113).
5. The electric control multi-way valve of the unmanned tractor as claimed in claim 4, wherein: the second three-position six-way valve (12) comprises a seventh manual valve port (121), an eighth manual valve port (122), a ninth manual valve port (123), a tenth manual valve port (124), an eleventh manual valve port (125) and a twelfth manual valve port (126), the seventh manual valve port (121) is connected with the second check valve (14), the eighth manual valve port (122) is connected with the pressure oil port, the ninth manual valve port (123) is connected with the oil return port, the eleventh manual valve port (125) is connected with the oil return port, and the twelfth manual valve port (126) and the tenth manual valve port (124) are used for connecting a manual farm implement;
when the second three-position six-way valve (12) is located at the first working position, the eighth manual valve port (122) is connected with the eleventh manual valve port (125);
when the second three-position six-way valve (12) is located at the second working position, the seventh manual valve port (121) is connected with the twelfth manual valve port (126), and the ninth manual valve port (123) is connected with the tenth manual valve port (124);
when the second three-position six-way valve (12) is located at the third working position, the seventh manual valve port (121) is connected with the tenth manual valve port (124), and the ninth manual valve port (123) is connected with the twelfth manual valve port (126).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021135286.1U CN212250668U (en) | 2020-06-18 | 2020-06-18 | Electric control multi-way valve of unmanned tractor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021135286.1U CN212250668U (en) | 2020-06-18 | 2020-06-18 | Electric control multi-way valve of unmanned tractor |
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| CN212250668U true CN212250668U (en) | 2020-12-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594501A (en) * | 2020-06-18 | 2020-08-28 | 北京中科原动力科技有限公司 | Unmanned tractor electric control multi-way valve and control method thereof |
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- 2020-06-18 CN CN202021135286.1U patent/CN212250668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594501A (en) * | 2020-06-18 | 2020-08-28 | 北京中科原动力科技有限公司 | Unmanned tractor electric control multi-way valve and control method thereof |
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