Spray boom control system and sprayer

Abstract

The application relates to the technical field of agricultural machinery equipment, in particular to a spray boom control system and a spraying machine. The spray boom control system comprises an oil supply oil circuit, a main control valve connected with the oil supply oil circuit, a first oil circuit connected with the main control valve, a shunt valve connected with the first oil circuit, and the shunt valve is provided with a shunt interface; at least two spray arm oil cylinders, the number of the shunt interfaces is the same as that of the spray arm oil cylinders, and each shunt interface is connected with one spray arm oil cylinder. The spray boom control system provided by the application optimizes the oil supply paths of the spray arm oil cylinders, simultaneously supplies oil to the spray arm oil cylinders, makes the spray arm oil cylinders synchronously stretch and contract, and makes the unfolding speeds and folding speeds of the spray booms consistent, thereby significantly improving the synchronism of the spray booms.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery and equipment technology, and in particular to a boom control system and a sprayer. Background Technology

[0002] Currently, sprayers are typically equipped with two spray booms to ensure the spraying range. However, the existing sprayers have poor synchronization between the two spray booms, and the unfolding and folding speeds of the two spray booms are inconsistent. After the sprayer is started, the asynchronous unfolding of the two spray booms can easily affect the spraying range, leading to some missed areas and affecting work efficiency. The two spray booms also have asynchronous folding speeds. Utility Model Content

[0003] The purpose of this application is to provide a boom control system and a sprayer, so as to solve to some extent the technical problem of poor boom synchronization in existing sprayers.

[0004] This application provides a boom control system, including:

[0005] Oil supply circuit;

[0006] The main control valve is connected to the oil supply circuit.

[0007] The first oil circuit is connected to the main control valve;

[0008] A flow divider valve is connected to the first oil circuit and is provided with a flow divider interface;

[0009] At least two spray arm cylinders, the number of the diversion ports is the same as the number of spray arm cylinders, and each diversion port is connected to one spray arm cylinder.

[0010] In the above technical solution, the spray bar control system further includes a return oil circuit, the main control valve is provided with an oil inlet and an oil return port, the oil supply circuit is connected to the oil inlet, and the oil return circuit is connected to the oil return port.

[0011] In any of the above technical solutions, the first oil circuit further includes:

[0012] A first shut-off valve, the first shut-off valve including a first interface and a second interface, the first interface being connected to the main control valve;

[0013] The first throttle valve includes a third interface and a fourth interface, the third interface being connected to the second interface and the fourth interface being connected to the diverter valve.

[0014] In any of the above technical solutions, the boom control system further includes a second oil circuit, which is connected to the main control valve; the second oil circuit includes:

[0015] The second shut-off valve includes a fifth port and a sixth port, wherein the fifth port is connected to the main control valve.

[0016] The second throttle valve includes a seventh port and an eighth port. The seventh port is connected to the sixth port, and the eighth port is connected to the spray arm cylinder.

[0017] In any of the above technical solutions, the main control valve further includes:

[0018] First valve position, the first valve position is provided with the oil inlet and the oil return port;

[0019] The second valve position and the third valve position are provided at intervals between each other, and the second valve position and the third valve position can be used alternately as the working valve position.

[0020] In any of the above technical solutions, the spray arm cylinder further includes:

[0021] Cylinder rod;

[0022] The rod chamber contains the cylinder rod passing through it; the rod chamber is connected to the second oil passage.

[0023] The rodless cavity is spaced apart from the rod cavity; the rodless cavity is connected to the shunt interface.

[0024] In any of the above technical solutions, the spray bar control system further includes:

[0025] A connecting pipe is provided, and the shunt port is connected to the rodless cavity via the connecting pipe.

[0026] A connecting pipe, wherein the connecting pipe is connected to the connecting pipe;

[0027] The third throttle valve is installed in the connecting pipeline.

[0028] In any of the above technical solutions, both the first throttle valve and the second throttle valve are one-way throttle valves.

[0029] In any of the above technical solutions, the spray bar control system further includes a speed regulating valve, which is disposed in the oil supply circuit.

[0030] This application also provides a sprayer that includes the boom control system described in any of the above technical solutions, and thus has all the beneficial technical effects of the boom control system, which will not be repeated here.

[0031] Compared with the prior art, the beneficial effects of this application are as follows:

[0032] The boom control system provided in this application includes: an oil supply circuit; a main control valve, the oil supply circuit being connected to the main control valve; a first oil circuit, the first oil circuit being connected to the main control valve; a diverter valve, the diverter valve being connected to the first oil circuit, the diverter valve being provided with a diverter interface; and at least two boom cylinders, the number of diverter interfaces being the same as the number of boom cylinders, each diverter interface being connected to one boom cylinder.

[0033] The spray boom control system provided in this application optimizes the oil supply path of each spray arm cylinder, enabling each spray arm cylinder to supply oil simultaneously. This allows each spray arm cylinder to extend and retract synchronously, resulting in consistent deployment and folding speeds for each spray boom, significantly improving the synchronization of each spray boom.

[0034] The sprayer provided in this application includes the aforementioned boom control system. Therefore, the synchronization of each boom is significantly improved by the boom control system, and the consistency of the actions of each boom is improved, which in turn helps to improve the operating efficiency of the sprayer and the maintenance efficiency of the sprayer after the operation is completed. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the spray boom control system provided in an embodiment of this application.

[0037] Figure label:

[0038] 1- Oil supply line, 2- Oil return line, 3- Main control valve, 301- First valve position, 302- Second valve position, 303- Third valve position, 4- Diverter valve, 401- Inlet, 402- Diverter interface, 5- First shut-off valve, 501- First interface, 502- Second interface, 6- First throttle valve, 601- Third interface, 602- Fourth interface, 603- First resilient valve core, 604- First throttle orifice, 7- Second shut-off valve, 701- Fifth interface, 702- Sixth interface, 8- - Second throttle valve, 801-Seventh interface, 802-Eighth interface, 9-First branch pipe, 10-Second branch pipe, 11-First spray arm cylinder, 1101-First cylinder rod, 1102-First rodless chamber, 1103-First rod chamber, 12-Second spray arm cylinder, 1201-Second cylinder rod, 1202-Second rodless chamber, 1203-Second rod chamber, 13-First connecting pipe, 14-Second connecting pipe, 15-Connecting pipe, 16-Third throttle valve, 17-Speed ​​control valve. Detailed Implementation

[0039] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0040] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0041] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] The following reference Figure 1 The present application describes a boom control system and a sprayer according to embodiments thereof.

[0045] See Figure 1 As shown, an embodiment of this application provides a boom control system. This boom control system includes an oil supply line 1, a main control valve 3, a first oil line, a diverter valve 4, and a boom cylinder. The oil supply line 1 is connected to the main control valve 3 and is also connected to a hydraulic oil tank. The first oil line is connected to both the main control valve 3 and the diverter valve 4. The boom cylinder is connected to the diverter valve 4, so that the oil supply line 1 can supply hydraulic oil to each boom cylinder after being diverted by the main control valve 3 and the first oil line via the diverter valve 4, thereby causing the boom cylinder to extend. The boom of the sprayer is connected to the boom cylinder, so that the boom is pushed to unfold after the boom cylinder extends. The number of spray booms corresponds to the number of spray arm cylinders and is arranged one-to-one. The diversion valve 4 has an inlet 401 and a diversion interface 402. The number of diversion interfaces 402 corresponds to the number of spray arm cylinders and is arranged one-to-one. Each diversion interface 402 is connected to one spray arm cylinder. Hydraulic oil is distributed through the diversion valve 4, and the hydraulic oil supply source for each spray arm cylinder is the same, enabling all spray arm cylinders to extend synchronously, thereby effectively improving the synchronization of all spray arm cylinders. Preferably, in this embodiment, there are two spray arm cylinders, namely a first spray arm cylinder 11 and a second spray arm cylinder 12.

[0046] Preferably, the boom control system further includes a pump body (not shown in the figure), which is located between the oil supply line 1 and the oil tank and is used to pump hydraulic oil from the oil tank.

[0047] Furthermore, this boom control system also includes a return oil circuit 2, and a main control valve 3 is provided with an oil inlet and an oil return port. The oil supply circuit 1 is connected to the oil inlet, and the oil return circuit 2 is connected to the oil return port. The main control valve 3 is also provided with a first connection port and a second connection port.

[0048] Preferably, the spray boom control system further includes a speed regulating valve 17, which is disposed in the oil supply circuit 1. The speed regulating valve 17 is used to adjust the flow rate of the hydraulic oil supply, thereby controlling the speed of the spray boom cylinder.

[0049] Furthermore, the main control valve 3 is specifically a three-position four-way solenoid valve, including a valve core, a first valve position 301, a second valve position 302, and a third valve position 303. The first valve position 301 is an empty valve position; when this spray boom control system is not in use, the valve core is in the first valve position 301. The second valve position 302 and the third valve position 303 are both operating valve positions. Specifically, when the valve core is in the second valve position 302, the spray boom can be extended; when the valve core switches to the third valve position 303, the spray boom can be folded. The specific process is described below.

[0050] Furthermore, the first oil circuit includes a first shut-off valve 5 and a first throttle valve 6. Preferably, the first shut-off valve 5 is an electrically controlled shut-off valve, which includes a first interface 501 and a second interface 502. The first interface 501 is connected to the first connection port of the main control valve 3 via a pipe fitting. The first throttle valve 6 includes a third interface 601 and a fourth interface 602. The third interface 601 is connected to the second interface 502 via a pipe fitting, and the fourth interface 602 is connected to the inlet of the diverter valve 4 via a pipe fitting.

[0051] Furthermore, the first throttle valve 6 is specifically a one-way throttle valve. The first throttle valve 6 includes a first elastic valve core 603 and a first throttle orifice 604. The first throttle orifice 604 is in a normally open state. Since the first throttle valve 6 is a one-way throttle valve, the first elastic valve core 603 can only allow oil to pass through in one direction. In this embodiment, the oil flow direction defined by the first elastic valve core 603 is from the first shut-off valve 5 to the diverter valve 4. When hydraulic oil flows into the first throttle valve 6 through the third interface 601, the hydraulic oil can squeeze the first elastic valve core 603 to compress it, so that both the first elastic valve core 603 and the first throttle orifice 604 pass through oil. When oil flows into the first throttle valve 6 through the fourth interface 602, the state of the first elastic valve core 603 remains unchanged, and only the first throttle orifice 604 passes through oil.

[0052] Furthermore, the spray boom control system also includes a second oil circuit, which includes a second shut-off valve 7 and a second throttle valve 8. The second shut-off valve 7 is preferably an electrically controlled shut-off valve, and includes a fifth interface 701 and a sixth interface 702. The fifth interface 701 is connected to the second connection port of the main control valve 3 via a pipe fitting. The second throttle valve 8 includes a seventh interface 801 and an eighth interface 802, and the seventh interface 801 is connected to the sixth interface 702 via a pipe fitting. The spray boom control system also includes branch pipes, the number of which is the same as the number of spray arm cylinders. In this embodiment, there are two branch pipes: a first branch pipe 9 and a second branch pipe 10. Both the first branch pipe 9 and the second branch pipe 10 are connected to the eighth interface 802. The end of the first branch pipe 9 furthest from the eighth interface 802 is connected to the first spray arm cylinder 11, and the end of the second branch pipe 10 furthest from the eighth interface 802 is connected to the second spray arm cylinder 12.

[0053] Furthermore, the second throttle valve 8 is specifically a one-way throttle valve. The second throttle valve 8 includes a second elastic valve core and a second throttle orifice. The second throttle orifice is normally open. Since the second throttle valve 8 is a one-way throttle valve, the second elastic valve core can only pass oil in one direction. In this embodiment, the oil flow direction defined by the second elastic valve core is from the second shut-off valve 7 to the rod chamber of the spray arm cylinder. When hydraulic oil flows into the second throttle valve 8 through the seventh interface 801, the hydraulic oil can squeeze the second elastic valve core to compress it, so that both the second elastic valve core and the second throttle orifice pass oil. When the oil flows into the second throttle valve 8 through the eighth interface 802, the state of the second elastic valve core remains unchanged, and only the second throttle orifice passes oil.

[0054] Furthermore, the first spray arm cylinder 11 includes: a first cylinder body and a first cylinder rod 1101. A portion of the first cylinder rod 1101 passes through the first cylinder body, and the first cylinder rod 1101 can extend or retract relative to the first cylinder body. A plunger is provided at one end of the first cylinder rod 1101 located inside the first cylinder body. The plunger divides the internal space of the first cylinder body into a first rodless chamber 1102 and a first rod chamber 1103. One end of the first cylinder rod 1101 extending to the outside of the first cylinder body is connected to a spray bar.

[0055] Accordingly, the second spray arm cylinder 12 includes a second cylinder body and a second cylinder rod 1201. The second cylinder body forms a second rodless chamber 1202 and a second rod chamber 1203. The second cylinder rod 1201 is connected to another spray rod.

[0056] Furthermore, the spray boom control system also includes connecting pipes, the number of which is the same as the number of spray boom cylinders. In this embodiment, there are two connecting pipes, namely a first connecting pipe 13 and a second connecting pipe 14. One end of the first connecting pipe 13 is connected to one of the diversion ports 402, and the other end of the first connecting pipe 13 is connected to the first rodless cavity 1102. One end of the second connecting pipe 14 is connected to the other diversion port 402, and the other end of the second connecting pipe 14 is connected to the second rodless cavity 1202.

[0057] Furthermore, the spray boom control system also includes a connecting pipe 15, one end of which is connected to the first connecting pipe 13, and the other end of which is connected to the second connecting pipe 14.

[0058] When the number of spray arm cylinders is more than two, the number of connecting pipes also increases accordingly. At this time, one or more T-connectors are added to the connecting pipe 15 so that the connecting pipe 15 can be connected to each connecting pipe.

[0059] Furthermore, the boom control system also includes a third throttle valve 16, which is disposed in the connecting pipe 15.

[0060] When it is necessary to drive the first spray arm cylinder 11 and the second spray arm cylinder 12 to extend synchronously, operate the main control valve 3 to switch the valve core to the second valve position 302, and ensure that the first shut-off valve 5 is energized. At this time, the hydraulic oil supplied by the oil supply circuit 1 flows out through the first connection port in sequence and then flows through the first shut-off valve 5, the first throttle valve 6, and the diverter valve 4 of the first oil circuit to the first rodless chamber 1102 and the second rodless chamber 1202 respectively, so that the first cylinder rod 1101 and the second cylinder rod 1201 can be pushed out synchronously, thereby pushing the two spray arms and making the two spray arms extend synchronously. During this process, the first elastic valve core 603 and the first throttle orifice 604 of the first throttle valve 6 are both filled with oil.

[0061] The return oil from the first spray arm cylinder 11 flows out through the first branch pipe 9, and the return oil from the second spray arm cylinder 12 flows out through the second branch pipe 10. After the two return oils merge, they flow to the second throttle valve 8. The second throttle valve 8 is energized, and the second shut-off valve 7 is energized. Since the second throttle valve 8 is a one-way valve, the second elastic valve core does not pass oil at this time, but the second throttle orifice does. The return oil flows through the second throttle valve 8 to the second connection port of the main control valve 3, and then flows through the main control valve 3 to the return oil circuit 2. It should be noted that, during this process, the oil passes through the second throttle orifice, which can limit the return oil speed to be too fast, thereby preventing the two spray arm cylinders from moving too quickly.

[0062] When it is necessary to drive the first spray arm cylinder 11 and the second spray arm cylinder 12 to retract synchronously, the main control valve 3 is operated to switch the valve core to the third valve position 303, so that the first shut-off valve 5 and the second shut-off valve 7 are both in the energized state. At this time, the hydraulic oil supplied by the oil supply circuit 1 flows through the second oil circuit to the second shut-off valve 7 and the second throttle valve 8. The second elastic valve core and the second throttle orifice are both filled with oil. Then the oil flows through the first branch pipe 9 and the second branch pipe 10 to the first rod chamber 1103 and the second rod chamber 1203 respectively, so that the hydraulic oil can push the first cylinder rod 1101 and the second cylinder rod 1201 to retract synchronously, thereby pulling the two spray arms and making the two spray arms fold synchronously.

[0063] The return oil from the first spray arm cylinder 11 flows out through the first connecting pipe 13, and the return oil from the second spray arm cylinder 12 flows out through the second connecting pipe 14. After the two return oils merge, they flow to the first throttle valve 6. Since the first throttle valve 6 is a one-way valve, the first elastic valve core 603 does not pass oil, while the first throttle orifice 604 passes oil. Then the return oil flows to the main control valve 3 through the first shut-off valve 5, and finally flows to the return oil circuit 2.

[0064] It should be noted that by setting a connecting pipe 15 between the first connecting pipe 13 and the second connecting pipe 14, the other can still move when either of the two spray arm cylinders has reached its bottom.

[0065] In summary, the spray boom control system provided in this application optimizes the oil supply path of each spray arm cylinder, enabling each spray arm cylinder to supply oil simultaneously. This allows each spray arm cylinder to extend and retract synchronously, resulting in consistent deployment and folding speeds for each spray boom, thus significantly improving the synchronization of each spray boom.

[0066] In addition, a third throttle valve 16 is installed after the diversion valve 4 to ensure that after one spray bar reaches its position, the other spray bars can still move into position. The third throttle valve 16 is a two-way throttle valve.

[0067] The embodiments of this application also provide a sprayer including the boom control system described in any of the above embodiments, and thus have all the beneficial technical effects of the boom control system, which will not be repeated here.

[0068] The sprayer provided in this embodiment, through the above-mentioned spray boom control system, significantly improves the synchronization of each spray boom and the consistency of their movements, thereby helping to improve the operating efficiency of the sprayer and the maintenance efficiency of the sprayer after operation.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A spray boom control system, characterized in that, include: Oil supply circuit; The main control valve is connected to the oil supply circuit. The first oil circuit is connected to the main control valve; A flow divider valve is connected to the first oil circuit and is provided with a flow divider interface; At least two spray arm cylinders, the number of the diversion ports is the same as the number of spray arm cylinders, and each diversion port is connected to one spray arm cylinder.

2. The spray boom control system according to claim 1, characterized in that, The boom control system also includes a return oil circuit. The main control valve is provided with an oil inlet and an oil return port. The oil supply circuit is connected to the oil inlet, and the oil return circuit is connected to the oil return port.

3. The spray boom control system according to claim 1, characterized in that, The first oil circuit includes: A first shut-off valve, the first shut-off valve including a first interface and a second interface, the first interface being connected to the main control valve; The first throttle valve includes a third interface and a fourth interface, the third interface being connected to the second interface and the fourth interface being connected to the diverter valve.

4. The spray boom control system according to claim 3, characterized in that, The boom control system further includes a second oil circuit, which is connected to the main control valve; the second oil circuit includes: The second shut-off valve includes a fifth port and a sixth port, wherein the fifth port is connected to the main control valve. The second throttle valve includes a seventh port and an eighth port. The seventh port is connected to the sixth port, and the eighth port is connected to the spray arm cylinder.

5. The spray boom control system according to claim 2, characterized in that, The main control valve includes: First valve position, the first valve position is provided with the oil inlet and the oil return port; The second valve position and the third valve position are provided at intervals between each other, and the second valve position and the third valve position can be used alternately as the working valve position.

6. The spray boom control system according to claim 4, characterized in that, The spray arm cylinder includes: Cylinder rod; The rod chamber contains the cylinder rod passing through it; the rod chamber is connected to the second oil passage. The rodless cavity is spaced apart from the rod cavity; the rodless cavity is connected to the shunt interface.

7. The spray boom control system according to claim 6, characterized in that, The boom control system also includes: A connecting pipe is provided, and the shunt port is connected to the rodless cavity via the connecting pipe. A connecting pipe, wherein the connecting pipe is connected to the connecting pipe; The third throttle valve is installed in the connecting pipeline.

8. The spray boom control system according to claim 4, characterized in that, Both the first throttle valve and the second throttle valve are one-way throttle valves.

9. The spray boom control system according to any one of claims 1 to 8, characterized in that, The boom control system also includes a speed control valve, which is located in the oil supply circuit.

10. A sprayer, characterized in that, The spray boom control system includes any one of claims 1 to 9.

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