A handle control system and an excavator

Abstract

An embodiment of the present invention provides a handle control system and an excavator, which relate to the field of construction machinery. The handle control system includes a first reversing valve, a first handle, a control valve, an electromagnetic reversing valve, a controller, and an adjustment switch. The first reversing valve is provided with a first valve port. The first handle is used to open or close the first valve port. The control valve is provided with a first pilot port and a second pilot port. The electromagnetic reversing valve is provided with a first valve position and a second valve position. The controller is used to control the spool of the electromagnetic reversing valve to be in the first valve position or the second valve position so as to switch between a first state and a second state. In the first state, the first valve port is communicated with the first pilot port. In the second state, the first valve port is communicated with the second pilot port. The adjustment switch is electrically connected to the controller. The adjustment switch is used to enable the controller to control the spool of the electromagnetic reversing valve to be in the first valve position or the second valve position. The first handle is used to control different actions of a preset component in the first state and the second state respectively.

Description

Technical Field

[0001] The present invention relates to the field of construction machinery, and in particular, to a handle control system and an excavator. Background Art

[0002] An operator operates an excavator in a cab by operating a handle. Different operators have different habits when operating the handle. For example, some operators are used to controlling the boom to rise by rocking the right handle upwards, while some operators are used to controlling the bucket excavation by rocking the right handle upwards. Therefore, when different operators operate, it is necessary to switch the handle control mode to meet their own operation requirements. The traditional control system for switching the handle operation mode has a complex structure and is not convenient for the operator to operate. Summary of the Invention

[0003] The purpose of the present invention is to provide a handle control system and an excavator, which can effectively improve the above technical problems.

[0004] The embodiments of the present invention are implemented as follows:

[0005] In a first aspect, an embodiment of the present invention provides a handle control system, including:

[0006] A first reversing valve provided with a first valve port;

[0007] A first handle, which is in transmission connection with the spool of the first reversing valve to open or close the first valve port;

[0008] A control valve provided with a first pilot port and a second pilot port;

[0009] An electromagnetic reversing valve provided with a first valve position and a second valve position;

[0010] A controller for controlling the spool of the electromagnetic reversing valve to be in the first valve position or the second valve position to switch between a first state and a second state;

[0011] In the first state, the first valve port is communicated with the first pilot port;

[0012] In the second state, the first valve port is communicated with the second pilot port;

[0013] An adjustment switch, which is electrically connected to the controller, and the adjustment switch is used to make the controller control the spool of the electromagnetic reversing valve to be in the first valve position or the second valve position when moving to a first position or a second position;

[0014] The first handle is used to control different actions of a preset component in the first state and the second state respectively.

[0015] In an optional embodiment, the first reversing valve is further provided with a second valve port, and the control valve is further provided with a third pilot port and a fourth pilot port;

[0016] In the first state, the second valve port is communicated with the third pilot port;

[0017] In the second state, the second valve port is communicated with the fourth pilot port;

[0018] The first handle opens or closes the second valve port during the process of moving the valve core of the first reversing valve, and the first valve port and the second valve port are not opened at the same time.

[0019] In an optional embodiment, the preset component includes a movable arm, and the first handle is used to open the first valve port or the second valve port when moving in a preset direction or in a direction opposite to the preset direction;

[0020] In the first state, the first handle is used to control the boom to descend when the first valve port is opened, and is used to control the boom to ascend when the second valve port is opened.

[0021] In an optional embodiment, the preset component further includes a handle, and the first handle is used to open the first valve port or the second valve port when moving in a preset direction or in a direction opposite to the preset direction;

[0022] In the second state, the first handle is used to control the boom to unload when the first valve port is opened, and is used to control the boom to dig when the second valve port is opened.

[0023] In an optional embodiment, the handle control system further includes a second reversing valve and a second handle, the second reversing valve is provided with a third valve port, and the second handle is drivingly connected to the valve core of the second reversing valve to open or close the third valve port;

[0024] In the first state, the third valve port is communicated with the fourth pilot port;

[0025] In the second state, the third valve port is communicated with the third pilot port;

[0026] The second handle is used to control different actions of the preset component in the first state and the second state respectively.

[0027] In an optional embodiment, the second reversing valve is further provided with a fourth valve port;

[0028] In the first state, the fourth valve port is communicated with the second pilot port;

[0029] In the second state, the fourth valve port communicates with the first pilot port;

[0030] During the process of moving the spool of the second directional control valve by the second handle, the fourth valve port is opened or closed, and the third valve port and the fourth valve port are not opened simultaneously.

[0031] In an alternative embodiment, the preset component includes a dipper stick. When the second handle is moved in a preset direction or in a direction opposite to the preset direction, the third valve port or the fourth valve port is opened;

[0032] In the first state, when the second handle is used to open the third valve port, it controls the dipper stick to dig, and when it is used to open the fourth valve port, it controls the dipper stick to unload.

[0033] In an alternative embodiment, the preset component further includes a boom. When the second handle is moved in a preset direction or in a direction opposite to the preset direction, the third valve port or the fourth valve port is opened;

[0034] In the second state, when the second handle is used to open the third valve port, it controls the boom to rise, or when it is used to open the fourth valve port, it controls the boom to lower.

[0035] In a second aspect, an embodiment of the present invention provides an excavator, including the handle control system according to any one of the foregoing embodiments.

[0036] In an alternative embodiment, the excavator further includes a cab and a console disposed in the cab, and the adjustment switch is movably disposed on the console.

[0037] The beneficial effects of the embodiments of the present invention include, for example:

[0038] An embodiment of the present invention provides a handle control system, which includes a first reversing valve, a first handle, a control valve, an electromagnetic reversing valve, a controller, and an adjustment switch. When the adjustment switch moves to the first position or the second position, the controller controls the spool of the electromagnetic reversing valve to be in the first valve position or the second valve position, so as to switch between the first state and the second state. In the first state, the first valve port is communicated with the first pilot port. In this way, operating the first handle to move the spool of the first reversing valve to open the first valve port can control one of the actions of the preset component. In the second state, the first valve port is communicated with the second pilot port. In this way, operating the first handle to move the spool of the first reversing valve to open the first valve port can control another action of the preset component. In this way, by moving the adjustment switch, although the first handle moves the spool of the first reversing valve in the same direction to open the first valve port, different actions can be generated for the preset component. The operator can directly move the adjustment switch according to his own operating habits to achieve the purpose of switching the control mode of the first handle, and the overall adjustment process is simple and convenient.

[0039] An embodiment of the present invention also provides an excavator, which includes the handle control system mentioned above and has all the functions of the handle control system. The excavator also has the beneficial effect of making the process of switching the control mode of the first handle simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is a schematic structural diagram of the handle control system provided by the embodiment of the present invention;

[0042] Figure 2 It is a control flowchart of the handle control system provided by the embodiment of the present invention.

[0043] Reference numerals: 1 - handle control system; 11 - first reversing valve; 111 - first valve port; 112 - second valve port; 12 - first handle; 13 - control valve; 131 - first pilot port; 132 - second pilot port; 133 - third pilot port; 134 - fourth pilot port; 14 - electromagnetic reversing valve; 141 - first valve position; 142 - second valve position; 15 - controller; 16 - adjustment switch; 17 - second reversing valve; 171 - third valve port; 172 - fourth valve port; 18 - second handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0048] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0049] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] Please refer to Figure 1 and Figure 2, this embodiment provides a handle control system 1. The handle control system 1 includes a first reversing valve 11, a first handle 12, a control valve 13, an electromagnetic reversing valve 14, a controller 15, and an adjustment switch 16. The first reversing valve 11 is provided with a first valve port 111, and the first handle 12 is drivingly connected to the valve core of the first reversing valve 11. It can be understood that when the first handle 12 moves, it can drive the valve core of the first reversing valve 11 to move, thereby opening or closing the first valve port 111.

[0051] In this embodiment, the control valve 13 is provided with a first pilot port 131 and a second pilot port 132. When the first valve port 111 is communicated with the first pilot port 131, operating the first handle 12 to move can control the preset component to perform corresponding actions. When the first valve port 111 is communicated with the second pilot port 132, operating the first handle 12 to move can control the preset component to perform other actions. The specific actions of the preset component will be described in detail later.

[0052] It should be noted that in this embodiment, the electromagnetic reversing valve 14 is provided with a first valve position 141 and a second valve position 142. When the valve core of the electromagnetic reversing valve 14 is in the first valve position 141, the handle control system 1 is in the first state. At this time, the first valve port 111 is communicated with the first pilot port 131. When the valve core of the electromagnetic reversing valve 14 is in the second valve position 142, the handle control system 1 is in the second state. At this time, the first valve port 111 is communicated with the second pilot port 132.

[0053] In this embodiment, the controller 15 is used to control the valve core of the electromagnetic reversing valve 14 to be in the first valve position 141 or the second valve position 142. Generally, when the controller 15 controls the coil of the electromagnetic reversing valve 14 to be energized, the valve core is in the first valve position 141. When the controller 15 controls the coil of the electromagnetic reversing valve 14 to be de-energized, the valve core is in the second valve position 142.

[0054] In this embodiment, the adjustment switch 16 can be moved to the first position or the second position. The adjustment switch 16 is electrically connected to the controller 15. When the adjustment switch 16 is moved to the first position, it causes the controller 15 to control the coil of the electromagnetic reversing valve 14 to be energized. When the adjustment switch 16 is moved to the second position, it causes the controller 15 to control the coil of the electromagnetic reversing valve 14 to be de-energized.

[0055] According to their own operating habits, the operator can directly move the adjustment switch. Under the control of the controller 15, the spool of the electromagnetic directional valve 14 is in the first valve position 141 or the second valve position 142, so that the first valve port 111 is communicated with the first pilot port 131, or the first valve port 111 is communicated with the second pilot port 132. In this way, when the first valve port 111 is communicated with the first pilot port 131, moving the first handle 12 can control the corresponding component to perform corresponding actions. When the first valve port 111 is communicated with the second pilot port 132, moving the first handle 12 can control the corresponding component to perform other actions. The overall adjustment process is simple and convenient.

[0056] Please refer to Figure 1 and Figure 2 , in this embodiment, the first reversing valve 11 is further provided with a second valve port 112, and the control valve 13 is further provided with a third pilot port 133 and a fourth pilot port 134.

[0057] In the above first state, the second valve port 112 is communicated with the third pilot port 133. In the above second state, the second valve port 112 is communicated with the fourth pilot port 134.

[0058] It should be noted that when the first handle 12 moves the spool of the first reversing valve 11, the second valve port 112 can also be opened or closed. It is worth noting that in this embodiment, the first valve port 111 and the second valve port 112 are not opened simultaneously.

[0059] That is to say, when the first handle 12 drives the spool of the first reversing valve 11 to move, when the first valve port 111 is opened, the second valve port 112 is closed. When the second valve port 112 is opened, the first valve port 111 is closed. For example, when the first handle 12 moves forward, the first valve port 111 is opened and the second valve port 112 is closed. When the first handle 12 moves backward, the first valve port 111 is closed and the second valve port 112 is opened. Of course, in actual use, the first handle 12 can also control the opening of the first valve port 111 or the second valve port 112 by operating such as moving left, moving right, rotating clockwise or rotating counterclockwise.

[0060] It should be noted that in this embodiment, when the second valve port 112 is communicated with the third pilot port 133, operating the first handle 12 can control the corresponding component to perform actions. When the second valve port 112 is communicated with the fourth pilot port 134, operating the first handle 12 can control the corresponding component to perform other actions.

[0061] Specifically, please refer to Figure 1 and Figure 2, in this embodiment, the preset component includes a boom. When the first handle 12 moves in the preset direction or in the direction opposite to the preset direction, the first valve port 111 or the second valve port 112 is opened.

[0062] In the first state, the first handle 12 is used to control the boom to lower when the first valve port 111 is opened, and is used to control the boom to rise when the second valve port 112 is opened.

[0063] In this embodiment, the preset direction is the forward direction, and the direction opposite to the preset direction is the backward direction. When the first handle 12 moves forward, the first valve port 111 is opened and the second valve port 112 is closed. In the first state, the first valve port 111 is communicated with the first pilot port 131, and at this time the boom descends. When the first handle 12 moves backward, the second valve port 112 is opened and the first valve port 111 is closed. In the first state, the second valve port 112 is communicated with the third pilot port 133, and at this time the boom rises.

[0064] It should be noted that in other embodiments, the preset direction may also be the leftward direction, and the direction opposite to the preset direction may also be the rightward direction. Or, the preset direction may also be the clockwise direction, and the direction opposite to the preset direction may also be the counterclockwise direction.

[0065] Please refer to Figure 1 and Figure 2 , in this embodiment, the preset component further includes a bucket arm. In the second state, when the first handle 12 moves along the preset direction to open the first valve port 111, the first valve port 111 is communicated with the second pilot port 132, and at the same time, the bucket arm performs a unloading operation. In the second state, when the second handle 18 moves in the direction opposite to the preset direction, the second valve port 112 is opened, and the second valve port 112 is communicated with the fourth pilot port 134, and at the same time, the bucket arm performs a digging operation.

[0066] Please refer to Figure 1 and Figure 2 , the handle control system 1 further includes a second reversing valve 17 and a second handle 18. The second reversing valve 17 is provided with a third valve port 171. The second handle 18 is in transmission connection with the valve core of the second reversing valve 17 to open or close the third valve port 171.

[0067] Generally, the first handle 12 and the second handle 18 are arranged on the left and right sides of the operator. For example, the operator operates the first handle 12 with the left hand and the second handle 18 with the right hand. In this way, the operator can realize more actions of the preset component through the first handle 12 and the second handle 18.

[0068] In this embodiment, the second reversing valve 17 is used in conjunction with the second handle 18, and the first reversing valve 11 is used in conjunction with the first handle 12. The transmission connection structure between the second handle 18 and the valve core of the second reversing valve 17 is similar to the transmission connection structure between the first handle 12 and the valve core of the first reversing valve 11.

[0069] Specifically, in the first state, the third valve port 171 is communicated with the fourth pilot port 134. At this time, the second handle 18 can control the stick for excavation operation. In the second state, the third valve port 171 is communicated with the third pilot port 133. At this time, the second handle 18 can control the boom to rise.

[0070] Similar to the first reversing valve 11, the second reversing valve 17 is further provided with a fourth valve port 172. During the process of the second handle 18 moving the valve core of the second reversing valve 17, the third valve port 171 or the fourth valve port 172 can be opened. That is to say, in this embodiment, the third valve port 171 and the fourth valve port 172 are not opened simultaneously.

[0071] In the first state, the fourth valve port 172 is communicated with the second pilot port 132. At this time, the second handle 18 can control the stick for unloading operation. In the second state, the fourth valve port 172 is communicated with the first pilot port 131. At this time, the second handle 18 can control the boom to lower.

[0072] This embodiment also provides an excavator, including the handle control system 1 mentioned above, and this handle control system 1 can be integrated into the operating system of the excavator.

[0073] In this embodiment, the excavator further includes a cab and an operating console arranged in the cab. The adjustment switch 16 is movably arranged on the operating console. In this way, it is convenient for the operator to move the adjustment switch 16 in the cab to switch between the first state and the second state.

[0074] It should be noted that the directions such as "forward", "backward", "left", and "right" referred to in this embodiment are all referenced based on the state when the operator is sitting in the cab and operating normally.

[0075] In summary, the working principle of the handle control system 1 provided in this embodiment:

[0076] The first operator moves the adjustment switch to the first position according to his own habit. At this time, the overall handle control system 1 is in the first state. Operating the first handle 12 to move forward opens the first valve port 111. The first valve port 111 is communicated with the first pilot port 131 to control the boom to perform a lowering operation. Operating the first handle 12 to move backward opens the second valve port 112. The second valve port 112 is communicated with the third pilot port 133 to control the boom to perform a raising operation. Operating the second handle 18 to move forward opens the third valve port 171. The third valve port 171 is communicated with the fourth pilot port 134 to control the bucket arm to perform an excavation operation. Operating the second handle 18 to move backward opens the fourth valve port 172. The fourth valve port 172 is communicated with the second pilot port 132 to control the bucket arm to perform an unloading operation.

[0077] The second operator moves the adjustment switch to the second position according to his own habit. At this time, the overall handle control system 1 is in the second state. Operating the first handle 12 to move forward opens the first valve port 111. The first valve port 111 is communicated with the second pilot port 132 to control the bucket arm to perform an unloading operation. Operating the first handle 12 to move backward opens the second valve port 112. The second valve port 112 is communicated with the fourth pilot port 134 to control the bucket arm to perform an excavation operation. Operating the second handle 18 to move forward opens the third valve port 171. The third valve port 171 is communicated with the third pilot port 133 to control the boom to perform a raising operation. When operating the second handle 18 to move backward, the fourth valve port 172 is opened. The fourth valve port 172 is communicated with the first pilot port 131 to control the boom to perform a lowering operation.

[0078] The above are only specific embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A handle control system, characterized in that, Comprising: A first reversing valve (11), the first reversing valve (11) being provided with a first valve port (111) and a second valve port (112); A first handle (12), the first handle (12) being in driving connection with the spool of the first reversing valve (11), and when the first handle (12) moves the spool of the first reversing valve (11), the first valve port (111) / the second valve port (112) is opened or closed, and the first valve port (111) and the second valve port (112) are not opened simultaneously; A second reversing valve (17), the second reversing valve (17) being provided with a third valve port (171) and a fourth valve port (172); A second handle (18), the second handle (18) being in driving connection with the spool of the second reversing valve (17), and when the second handle (18) moves the spool of the second reversing valve (17), the third valve port (171) / the fourth valve port (172) is opened or closed, and the third valve port (171) and the fourth valve port (172) are not opened simultaneously; A control valve (13), the control valve (13) being provided with a first pilot port (131), a second pilot port (132), a third pilot port (133) and a fourth pilot port (134); An electromagnetic reversing valve (14), the electromagnetic reversing valve (14) being provided with a first valve position (141) and a second valve position (142); A controller (15), the controller (15) being used to control the spool of the electromagnetic reversing valve (14) to be in the first valve position (141) or the second valve position (142) so as to switch between a first state and a second state; in the first state, the first valve port (111) is communicated with the first pilot port (131), the second valve port (112) is communicated with the third pilot port (133); the third valve port (171) is communicated with the fourth pilot port (134); the fourth valve port (172) is communicated with the second pilot port (132); in the second state, the first valve port (111) is communicated with the second pilot port (132); the second valve port (112) is communicated with the fourth pilot port (134); the third valve port (171) is communicated with the third pilot port (133); the fourth valve port (172) is communicated with the first pilot port (131); An adjustment switch (16), the adjustment switch (16) being electrically connected to the controller (15), and when the adjustment switch (16) moves to a first position or a second position, the controller (15) is used to control the spool of the electromagnetic reversing valve (14) to be in the first valve position (141) or in the second valve position (142); The first handle (12) and the second handle (18) are used to respectively control different actions of a preset component in the first state and the second state, and the preset component includes a boom and an arm.

2. The handle control system according to claim 1, wherein, When the first handle (12) is moved in a preset direction or in a direction opposite to the preset direction, the first valve port (111) or the second valve port (112) is opened; In the first state, when the first handle (12) is used to open the first valve port (111), it is used to control the boom to lower, and when the second valve port (112) is opened, it is used to control the boom to rise.

3. The handle control system according to claim 1, characterized in that, When the first handle (12) is moved in a preset direction or in a direction opposite to the preset direction, the first valve port (111) or the second valve port (112) is opened; In the second state, when the first handle (12) is used to open the first valve port (111), it is used to control the stick to unload, and when the second valve port (112) is opened, it is used to control the stick to dig.

4. The handle control system according to claim 1, characterized in that, When the second handle (18) is moved in a preset direction or in a direction opposite to the preset direction, the third valve port (171) or the fourth valve port (172) is opened; In the first state, when the second handle (18) is used to open the third valve port (171), it is used to control the stick to dig, and when the fourth valve port (172) is opened, it is used to control the stick to unload.

5. The handle control system according to claim 1, wherein When the second handle (18) is moved in a preset direction or in a direction opposite to the preset direction, the third valve port (171) or the fourth valve port (172) is opened; In the second state, when the second handle (18) is used to open the third valve port (171), it is used to control the boom to rise, or when the fourth valve port (172) is opened, it is used to control the boom to lower.

6. An excavator, characterized in that, Comprising the handle control system (1) according to any one of claims 1-5.

7. The excavator according to claim 6, characterized in that, The excavator further includes a cab and an operating console disposed in the cab, and the adjustment switch (16) is movably disposed on the operating console.

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