Auxiliary control system for full-hydraulic engineering machinery

Abstract

The utility model discloses a full-hydraulic engineering machinery auxiliary control system which comprises a control panel, a controller, a distributor, a proportional electromagnetic valve, a sensor and a handle assembly. The proportional electromagnetic valves comprise a first proportional electromagnetic valve, a second proportional electromagnetic valve, a third proportional electromagnetic valve, a fourth proportional electromagnetic valve, a fifth proportional electromagnetic valve and a sixth proportional electromagnetic valve, the sensor monitors the fifth proportional electromagnetic valve, the sensor is connected with the controller, the proportional electromagnetic valves are connected with the distributor, and the distributor is connected with the controller. The distributor is connected with the handle assembly. The auxiliary operation system is used for the full-hydraulic engineering machinery, actions are softer and higher in coherence during auxiliary action control, the burden of highly concentrated spirit of a driver is greatly relieved, the operation efficiency is higher, and the auxiliary operation system is convenient to install, use and popularize.

Description

A fully hydraulic auxiliary control system for engineering machinery Technical Field

[0001] This utility model relates to the field of industrial control system technology, and in particular to an auxiliary control system for fully hydraulic engineering machinery. Background Technology

[0002] Traditional hydraulic engineering machinery relies on hydraulic transmission and simple manual control. Hydraulic transmission lacks a precise coordination mechanism, resulting in inconsistent response speeds of components during combined actions, leading to disjointed movements. Simultaneously, in manual control, there is no linear correlation between the force applied to the lever and the actual mechanical movement, making it difficult for operators to predict and control the machine's amplitude and speed. This increases operational difficulty and results in low construction quality and efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide an auxiliary control system for fully hydraulic engineering machinery to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A fully hydraulic auxiliary control system for engineering machinery includes a control panel, a controller, a distributor, proportional solenoid valves, sensors, and a handle assembly. The control panel, proportional solenoid valves, and sensors are all connected to the controller. The proportional solenoid valves include a first proportional solenoid valve, a second proportional solenoid valve, a third proportional solenoid valve, a fourth proportional solenoid valve, a fifth proportional solenoid valve, and a sixth proportional solenoid valve. The sensors monitor the fifth proportional solenoid valve. The sensors are connected to the controller. The proportional solenoid valves are connected to the distributor. The distributor is connected to the handle assembly.

[0006] Furthermore, the control panel includes a display screen and control knobs, the control knobs including a power switch knob, a parameter setting knob, a parameter selection knob, and a mode selection knob.

[0007] Furthermore, the distributor includes a first distributor, a second distributor, and a third distributor. The first proportional solenoid valve and the second proportional solenoid valve are respectively connected to the first distributor. The third proportional solenoid valve and the fourth proportional solenoid valve are respectively connected to the second distributor. The fifth proportional solenoid valve and the sixth proportional solenoid valve are respectively connected to the third distributor.

[0008] Furthermore, the handle assembly includes a first two-position three-way valve, a second two-position three-way valve, a third two-position three-way valve, a fourth two-position three-way valve, a fifth two-position three-way valve, and a sixth two-position three-way valve, and the six two-position three-way valves are connected to each other.

[0009] Furthermore, the first two-position three-way valve and the sixth two-position three-way valve are respectively connected to the first distributor, the second two-position three-way valve and the fifth two-position three-way valve are respectively connected to the second distributor, and the third two-position three-way valve and the fourth two-position three-way valve are respectively connected to the third distributor.

[0010] Beneficial effects:

[0011] The auxiliary operating system in this invention is used in fully hydraulic engineering machinery to make the movements smoother and more continuous during auxiliary motion control, greatly reducing the burden of high concentration on the driver, increasing work efficiency, and facilitating installation, use, and promotion. Attached Figure Description

[0012] Figure 1 is a system structure diagram of this utility model.

[0013] The following valves are labeled in the diagram: 1. Control panel; 2. Controller; 3. Sensor; 4. First proportional solenoid valve; 5. Second proportional solenoid valve; 6. Third proportional solenoid valve; 7. Fourth proportional solenoid valve; 8. Fifth proportional solenoid valve; 9. Sixth proportional solenoid valve; 10. First distributor; 11. Second distributor; 12. Third distributor; 13. First two-position three-way valve; 14. Second two-position three-way valve; 15. Third two-position three-way valve; 16. Fourth two-position three-way valve; 17. Fifth two-position three-way valve; 18. Sixth two-position three-way valve. Detailed Implementation

[0014] In the description of this embodiment, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., 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 direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and their corresponding connection methods can also be achieved through conventional technical means, which will not be described in detail in this application. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Example

[0017] A fully hydraulic auxiliary control system for engineering machinery, as shown in Figure 1, includes a control panel 1, a controller 2, a distributor, proportional solenoid valves, a sensor 3, and a handle assembly. The control panel 1, proportional solenoid valves, and sensor 3 are all connected to the controller 2. The proportional solenoid valves include a first proportional solenoid valve 4, a second proportional solenoid valve 5, a third proportional solenoid valve 6, a fourth proportional solenoid valve 7, a fifth proportional solenoid valve 8, and a sixth proportional solenoid valve 9. Sensor 3 monitors the fifth proportional solenoid valve 8. Sensor 3 is connected to the controller 2. The proportional solenoid valves are connected to the distributor, and the distributor is connected to the handle assembly. Specifically, the hydraulic output end of the handle assembly is connected to the input end of the proportional solenoid valve, and the output end of the proportional solenoid valve is connected to the pilot control end of the distributor. The distributor includes a first distributor 10, a second distributor 11, and a third distributor 12. The first proportional solenoid valve 4 and the second proportional solenoid valve 5 are respectively connected to the first distributor 10, the third proportional solenoid valve 6 and the fourth proportional solenoid valve 7 are respectively connected to the second distributor 11, and the fifth proportional solenoid valve 8 and the sixth proportional solenoid valve 9 are respectively connected to the third distributor 12. The handle assembly includes a first two-position three-way valve 13, a second two-position three-way valve 14, a third two-position three-way valve 15, a fourth two-position three-way valve 16, a fifth two-position three-way valve 17, and a sixth two-position three-way valve 18, and the six two-position three-way valves are interconnected. The first two-position three-way valve 13 and the sixth two-position three-way valve 18 are respectively connected to the first distributor 10, the second two-position three-way valve 14 and the fifth two-position three-way valve 17 are respectively connected to the second distributor 11, and the third two-position three-way valve 15 and the fourth two-position three-way valve 16 are respectively connected to the third distributor 12.

[0018] Specifically, the system in this embodiment can be used for auxiliary motion control in fully hydraulic engineering machinery, taking an excavator as an example. Control panel 1 is used by operators to control and adjust the system. Controller 2, as the core of the control system, receives signals from control panel 1 and sensor 3, processes them, and then sends control commands to the proportional solenoid valves. First distributor 10 is connected to first proportional solenoid valve 4 and second proportional solenoid valve 5 to control the boom raising and lowering of the excavator; for example, first proportional solenoid valve 4 adjusts the boom raising speed, and second proportional solenoid valve 5 controls the lowering speed. Second distributor 11 is connected to third proportional solenoid valve 6 and fourth proportional solenoid valve 7, responsible for stick extension and retraction; third proportional solenoid valve 6 drives the stick to extend, and fourth proportional solenoid valve 7 controls the stick to retract. Third distributor 12 is connected to fifth proportional solenoid valve 8 and sixth proportional solenoid valve 9, controlling bucket tilting or overhead crane rotation; fifth proportional solenoid valve 8 tilts the bucket forward for loading, and sixth proportional solenoid valve 9 controls the bucket to tilt backward for unloading, or controls the forward and reverse rotation of the swing motor to achieve overhead crane steering. Six of the proportional solenoid valves receive commands from controller 2 to adjust the valve core opening size, thereby controlling the valve stem displacement of the three distributors. A handle assembly consisting of six interconnected two-position three-way valves—namely, the first two-position three-way valve 13, the second two-position three-way valve 14, the third two-position three-way valve 15, the fourth two-position three-way valve 16, the fifth two-position three-way valve 17, and the sixth two-position three-way valve 18—is connected to its corresponding distributor, allowing the operator to manually control the distributor via the handle assembly. Sensor 3 monitors the fifth proportional solenoid valve 8, transmitting the monitoring information to controller 2 to influence controller 2's control of each proportional solenoid valve.

[0019] It should be noted that the actions controlled by the distributor and proportional solenoid valve are not limited here.

[0020] In this embodiment, the control panel 1 includes a display screen and control knobs. The control knobs include a power switch knob, a parameter setting knob, a parameter selection knob, and a mode selection knob. The display screen shows the system's operating status and information to the operator. The power switch knob can turn the system on or off. The parameter setting and parameter selection knobs are used to adjust control parameters, while the mode selection knob is used to switch between different operating modes. The specific working principles of the control knobs and display screen are existing technology and will not be elaborated upon here.

[0021] Working principle:

[0022] In this embodiment, after the auxiliary control system is turned on, if sensor 3 is turned off, controller 2 independently controls the six proportional solenoid valves, and the working states of the proportional solenoid valves do not affect each other. Specifically, when the operator performs a corresponding operation on the handle, the corresponding two-position three-way valve outputs an oil pressure signal, and the valve stem of the distributor associated with the two-position three-way valve is displaced, thereby actuating the mechanism.

[0023] When sensor 3 is activated, it can monitor the pilot pressure value of the fifth proportional solenoid valve 8 in real time and feed the pressure signal back to controller 2. Controller 2 obtains the real-time pressure value of the fifth proportional solenoid valve 8 and adjusts the current output values ​​of the six proportional solenoid valves according to its preset algorithm. Specifically, the proportional solenoid valves whose actions are related to those controlled by the fifth proportional solenoid valve 8 will have their pilot output pressure adjusted by controller 2, thereby affecting the valve stem displacement of the associated distributor and ultimately controlling the output flow of the distributor. At the same time, the proportional solenoid valves limit the maximum value of the pilot pressure output through preset current thresholds, thus making the various actions of construction machinery such as excavators more consistent and coordinated. Proportional solenoid valves whose actions are not directly related to those controlled by the fifth proportional solenoid valve 8 remain independent, meaning that controller 2 controls them independently, and their current output depends only on the input signal of their respective handles, unaffected by the fifth proportional solenoid valve 8.

[0024] After the auxiliary control system is turned off, the machine, such as an excavator, can resume normal operation without being affected by the system.

[0025] Although the embodiments of this utility model have been described in the specification, these embodiments are merely illustrative and should not limit the scope of protection of this utility model. Various omissions, substitutions, and modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fully hydraulic auxiliary control system for engineering machinery, characterized in that: The device includes a control panel, a controller, a distributor, proportional solenoid valves, a sensor, and a handle assembly. The control panel, proportional solenoid valves, and the sensor are all connected to the controller. The proportional solenoid valves include a first proportional solenoid valve, a second proportional solenoid valve, a third proportional solenoid valve, a fourth proportional solenoid valve, a fifth proportional solenoid valve, and a sixth proportional solenoid valve. The sensor monitors the fifth proportional solenoid valve and is connected to the controller. The proportional solenoid valves are connected to the distributor, and the distributor is connected to the handle assembly.

2. The auxiliary control system for fully hydraulic engineering machinery according to claim 1, characterized in that: The control panel includes a display screen and control knobs, which include a power switch knob, a parameter setting knob, a parameter selection knob, and a mode selection knob.

3. The auxiliary control system for fully hydraulic engineering machinery according to claim 1, characterized in that: The distributor includes a first distributor, a second distributor, and a third distributor. The first proportional solenoid valve and the second proportional solenoid valve are respectively connected to the first distributor. The third proportional solenoid valve and the fourth proportional solenoid valve are respectively connected to the second distributor. The fifth proportional solenoid valve and the sixth proportional solenoid valve are respectively connected to the third distributor.

4. The auxiliary control system for fully hydraulic engineering machinery according to claim 3, characterized in that: The handle assembly includes a first two-position three-way valve, a second two-position three-way valve, a third two-position three-way valve, a fourth two-position three-way valve, a fifth two-position three-way valve, and a sixth two-position three-way valve, and the six two-position three-way valves are connected to each other.

5. The auxiliary control system for fully hydraulic engineering machinery according to claim 4, characterized in that: The first two-position three-way valve and the sixth two-position three-way valve are respectively connected to the first distributor, the second two-position three-way valve and the fifth two-position three-way valve are respectively connected to the second distributor, and the third two-position three-way valve and the fourth two-position three-way valve are respectively connected to the third distributor.

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