Independent control system of high-pressure quick-change solenoid valve

Abstract

The invention discloses a high-pressure quick-change electromagnetic valve independent control system which comprises a quick-change electromagnetic valve used for controlling the action of an execution oil cylinder, a first stop valve used for isolating a middle through oil way, a control panel used for starting a quick-change mode, a controller used for coordinating action logic and a main valve internally provided with the first stop valve. According to the invention, a mode of entering a quick change mode through one key is adopted, complex multi-step flows are integrated into a single control instruction, and a driver can complete the whole unlocking and locking process of the accessory only by triggering a switch. According to the design, dependence on skills of a driver is fundamentally reduced, the risk of equipment failure or operation interruption caused by manual operation errors is reduced, the method is particularly suitable for operation stability guarantee of a green driver or in a high-intensity operation scene, operation steps are greatly reduced, the efficiency of accessory replacement is improved, and the cost is reduced. And therefore, the overall working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic system technology, specifically to an independent control system for a high-pressure quick-change solenoid valve. Background Technology

[0002] In the field of construction machinery, high-pressure quick-change devices are key components for realizing rapid switching of hydraulic systems. Their traditional control method mainly relies on the cutting off operation of the main oil circuit. It requires the connection and disconnection of connectors through the coordination of multiple actions. Specifically, the driver needs to operate multiple components such as the main oil circuit valve and the cylinder locking mechanism at the same time, forming a complex linkage control logic. This control mode has revealed multiple defects in actual operation, directly affecting the operating efficiency and safety of the equipment. Traditional control methods require the driver to have precise multi-action coordination ability, and need to coordinate the operation steps such as oil circuit switching, pressure adjustment and mechanical locking simultaneously. The operation is highly complex, and there is a risk of human error and safety risks. This operation method is complicated and has low efficiency when changing attachments, reducing the overall work efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an independent control system for a high-pressure fast-change solenoid valve to address the shortcomings of the prior art, thereby solving at least one of the above-mentioned technical problems.

[0004] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A high-pressure quick-change solenoid valve independent control system includes a quick-change solenoid valve for controlling the action of an actuator cylinder, a first shut-off valve for isolating the intermediate oil circuit, a control panel for activating the quick-change mode, a controller for coordinating action logic, and a main valve with the first shut-off valve built in. The oil inlet of the main valve is connected to a high-pressure pump. The main valve is provided with several valve groups, which are connected to each other through an intermediate oil circuit. The end of the intermediate oil circuit is connected to the oil outlet of the main valve. A first shut-off valve is provided in the intermediate oil circuit between the valve groups and the oil outlet of the main valve. An oil tank is connected to the oil outlet of the main valve. The first shut-off valve is connected to a low-pressure oil pump, which provides pilot oil to the first shut-off valve. A second shut-off valve is provided between the first shut-off valve and the low-pressure oil pump. The second shut-off valve is a solenoid valve. The high-pressure pump is connected to the quick-change solenoid valve. The quick-change solenoid valve is connected to the actuator cylinder. The control panel is electrically connected to the controller. The controller is electrically connected to both the second shut-off valve and the quick-change solenoid valve.

[0005] Furthermore, the quick-change solenoid valve is a two-position four-way valve. The oil inlet of the quick-change solenoid valve is connected to the high-pressure pump, the oil outlet of the quick-change solenoid valve is connected to the oil tank, and the two working ports of the quick-change solenoid valve are connected to the actuator cylinder, which is the locking cylinder of the quick-change device.

[0006] Furthermore, the first shut-off valve is a normally open two-position two-way valve, and the second shut-off valve is a normally closed two-position two-way solenoid valve.

[0007] Furthermore, the control panel serves as a user interface, providing access to quick-change mode switching and the operation of locking and unlocking the hydraulic cylinder.

[0008] Furthermore, the control panel is connected to the controller via a CAN bus.

[0009] The beneficial effects of this invention are: This invention integrates a complex, multi-step process into a single control command by employing a one-button quick-change mode. The driver only needs to trigger a switch to complete the entire process of unlocking and locking attachments. This design fundamentally reduces reliance on driver skills and minimizes the risk of equipment malfunctions or work interruptions due to human error. It is particularly suitable for ensuring operational stability for novice drivers or in high-intensity work scenarios. The significantly reduced number of steps improves the efficiency of attachment changes, thereby enhancing overall work efficiency. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the present invention.

[0012] The attached diagram lists the components represented by each number as follows: Main valve 1; Valve group 2; High pressure pump 3; First shut-off valve 4; Oil tank 5; Low pressure pump 6; Second shut-off valve 7; Quick-change solenoid valve 8; Actuating cylinder 9; Control panel 10; Controller 11. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0015] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0016] In the description of this invention, 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, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0018] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Example 1: See Figure 1This is a schematic diagram of the various structures of the present invention, including a quick-change solenoid valve 8 for controlling the action of the hydraulic cylinder 9, a first shut-off valve 4 for isolating the intermediate oil passage, a control panel 10 for activating the quick-change mode, a controller 11 for coordinating the action logic, and a main valve 1 with the first shut-off valve 4 built in. The oil inlet P2 of the main valve 1 is connected to a high-pressure pump 3 to provide high-pressure oil to the main valve 1 and the quick-change solenoid valve 8. Several valve groups 2 are provided inside the main valve 1, and the valve groups 2 are connected to each other through an intermediate oil passage. The end of the intermediate oil passage is connected to the oil outlet T2 of the main valve 1. The intermediate oil passage between the valve group 2 and the oil outlet T2 of the main valve 1 is provided with a first shut-off valve 4. The system is connected to an oil tank 5. The first shut-off valve 4 can cut off the intermediate oil circuit. The first shut-off valve 4 is connected to a low-pressure oil pump, which provides pilot oil to the first shut-off valve 4. The second shut-off valve 7 connects the oil circuit. The low-pressure oil from the low-pressure oil pump pushes the valve core of the first shut-off valve 4, causing the first shut-off valve 4 to close and thus cut off the intermediate oil circuit. A second shut-off valve 7 is provided between the first shut-off valve 4 and the low-pressure oil pump. The second shut-off valve 7 is a solenoid valve. The high-pressure pump 3 is connected to the oil inlet P of the quick-change solenoid valve 8. The quick-change solenoid valve 8 is connected to the actuator cylinder 9. The control panel 10 is electrically connected to the controller 11. The controller 11 is electrically connected to the second shut-off valve 7 and the quick-change solenoid valve 8.

[0020] Specifically, the quick-change solenoid valve 8 is a two-position four-way valve. The oil inlet P of the quick-change solenoid valve 8 is connected to the high-pressure pump 3, the oil outlet T of the quick-change solenoid valve 8 is connected to the oil tank 5, and the two working ports of the quick-change solenoid valve 8 are connected to the actuator cylinder 9. The actuator cylinder 9 is the locking cylinder of the quick-change device. The working port A is connected to the rodless chamber of the actuator cylinder 9, and the working port B is connected to the rod chamber of the actuator cylinder 9.

[0021] Specifically, the first shut-off valve 4 is a normally open two-position two-way valve, and the second shut-off valve 7 is a normally closed two-position two-way solenoid valve.

[0022] Specifically, the control panel 10 is a user interface that provides access to switch between quick-change modes and to lock and unlock the hydraulic cylinder 9. Commands are input through the control panel 10.

[0023] Specifically, the control panel 10 is connected to the controller 11 via a CAN bus.

[0024] The principle of this invention: The actuator cylinder 9 is installed on the quick-change device. The actuator cylinder 9 can lock the attachment and connect the attachment quick-change device. When the user touches the "Quick-change mode" button on the control panel 10, it triggers the mode switching request. After the controller 11 receives the activation signal transmitted by the CAN bus, the electromagnet of the second shut-off valve 7 is energized within 0.3 seconds. The second shut-off valve 7 opens. The low-pressure oil output by the low-pressure pump 6 pushes the valve core of the first shut-off valve 4 to close the first shut-off valve 4. The first shut-off valve 4 cuts off the intermediate oil passage from the oil inlet to the oil outlet of the main valve 1, so that the main valve 1 is in a non-working state. The system feeds back the text prompt "Quick-change mode ready" and the green indicator light signal through the monitor display screen to complete the activation of the quick-change mode. After the quick-change mode is activated, the user touches the "Quick-change Device Unlock" button on the control panel 10. The controller 11 energizes the quick-change solenoid valve 8 according to the switch signal, so that the oil inlet P of the quick-change solenoid valve 8 is connected to the working port B, and the oil outlet T is connected to the working port A. High-pressure oil enters the rod chamber of the actuator cylinder 9, causing the actuator cylinder 9 to retract and complete the separation of the attachment. After the attachment is replaced, the user touches the "Quick-change Device Lock" button on the control panel 10. The controller 11 energizes the quick-change solenoid valve 8 according to the switch signal, so that the oil inlet P of the quick-change solenoid valve 8 is connected to the working port A, and the oil outlet T is connected to the working port B. High-pressure oil enters the rodless chamber of the actuator cylinder 9, causing the actuator cylinder 9 to extend and complete the locking of the attachment. After the attachment is replaced, the user touches the "Cancel Quick Change Mode" button on the control panel 10 to trigger the mode switching request. After the controller 11 receives the activation signal transmitted by the CAN bus, the electromagnet of the second shut-off valve 7 is de-energized within 0.3 seconds, the second shut-off valve 7 is reset and closed, cutting off the oil circuit between the low-pressure pump 6 and the first shut-off valve 4. The valve core of the first shut-off valve 4 is reset, the first shut-off valve 4 is closed, and the first shut-off valve 4 reconnects the oil circuit from the oil inlet to the oil outlet of the main valve 1, so that the main valve 1 is in working state. The system feeds back the text prompt "Quick Change Mode Closed" and the green indicator light signal through the monitor display screen, completing the quick change mode closure.

[0025] This invention integrates a complex, multi-step process into a single control command by employing a one-button quick-change mode. The driver only needs to trigger a switch to complete the entire process of unlocking and locking attachments. This design fundamentally reduces reliance on driver skills and minimizes the risk of equipment malfunctions or work interruptions due to human error. It is particularly suitable for ensuring operational stability for novice drivers or in high-intensity work scenarios. The significantly reduced number of steps improves the efficiency of attachment changes, thereby enhancing overall work efficiency.

[0026] The above are merely optional embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0027] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. An independent control system for a high-pressure quick-change solenoid valve, characterized in that: The system includes a quick-change solenoid valve (8) for controlling the action of the hydraulic cylinder (9), a first shut-off valve (4) for isolating the central oil passage, a control panel (10) for activating the quick-change mode, a controller (11) for coordinating the action logic, and a main valve (1) with a built-in first shut-off valve (4). The oil inlet of the main valve (1) is connected to the high-pressure pump (3). The main valve (1) contains several valve groups (2), which are connected to each other through a central oil passage. The end of the central oil passage is connected to the oil outlet of the main valve (1). The central oil passage between the valve group (2) and the oil outlet of the main valve (1) is equipped with a first shut-off valve. The main valve (1) is connected to an oil tank (5) at its outlet. The first shut-off valve (4) is connected to a low-pressure oil pump. The low-pressure oil pump provides pilot oil to the first shut-off valve (4). A second shut-off valve (7) is provided between the first shut-off valve (4) and the low-pressure oil pump. The second shut-off valve (7) is a solenoid valve. The high-pressure pump (3) is connected to a quick-change solenoid valve (8). The quick-change solenoid valve (8) is connected to an actuator cylinder (9). The control panel (10) is electrically connected to a controller (11). The controller (11) is electrically connected to both the second shut-off valve (7) and the quick-change solenoid valve (8).

2. The independent control system for a high-pressure quick-change solenoid valve according to claim 1, characterized in that: The quick-change solenoid valve (8) is a two-position four-way valve. The oil inlet of the quick-change solenoid valve (8) is connected to the high-pressure pump (3), the oil outlet of the quick-change solenoid valve (8) is connected to the oil tank (5), and the two working ports of the quick-change solenoid valve (8) are connected to the actuator cylinder (9). The actuator cylinder (9) is the locking cylinder of the quick-change device.

3. The independent control system for a high-pressure quick-change solenoid valve according to claim 1, characterized in that: The first shut-off valve (4) is a normally open two-position two-way valve, and the second shut-off valve (7) is a normally closed two-position two-way solenoid valve.

4. The independent control system for a high-pressure quick-change solenoid valve according to claim 1, characterized in that: The control panel (10) is a user interface that provides access to switch between quick-change modes and to lock and unlock the hydraulic cylinder (9).

5. The independent control system for a high-pressure quick-change solenoid valve according to claim 1, characterized in that: The control panel (10) is connected to the controller (11) via a CAN bus.

Images