An assistive device adjustment system, an excavator, and a control method

Abstract

This invention discloses an auxiliary tool adjustment system, an excavator, and a control method, relating to the field of construction equipment technology. The auxiliary tool adjustment system includes an information acquisition device, a main valve assembly, a control valve assembly, a pump assembly, and a controller. The information acquisition device acquires information about the type of auxiliary tool connected to the adjustment system and its current gear position. The main valve assembly connects to the auxiliary tool and provides hydraulic oil to it. The pump assembly provides hydraulic oil to the main valve assembly. This auxiliary tool adjustment system can adjust the inlet pressure and flow rate of different auxiliary tools according to their specific usage requirements. Based on preset standard pressure and flow rates, the system allows the auxiliary tool to operate at standard pressure and flow rates, meeting the different pressure and flow requirements of various auxiliary tools. This effectively improves the operating speed of the auxiliary tool, maximizes its function, and extends its service life.

Description

Technical Field

[0001] This invention relates to the field of construction equipment technology, and more specifically, to an auxiliary tool adjustment system. Furthermore, this invention also relates to a control method for an excavator incorporating the aforementioned auxiliary tool adjustment system and applying that system. Background Technology

[0002] Generally, excavators are equipped with buckets for earthmoving or ore loading. However, with market development, excavator operations have become increasingly diverse, and simple excavation is no longer sufficient. To meet these demands, major excavator manufacturers have introduced multi-functional attachments. When an excavator is equipped with multi-functional attachments (such as hydraulic breakers or hydraulic shears), the required pressure and flow rate vary significantly depending on the attachment's performance. Even for the same type or the same attachment, the required pressure and flow rate differ depending on the application. Currently, pressure and flow rate adjustments are mostly manual, or not adjusted at all. This leads to attachments operating too fast or too slow, affecting the excavator's normal operation.

[0003] In summary, how to provide an auxiliary tool adjustment system that can adjust the pressure and flow rate of different auxiliary tools of an excavator is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an auxiliary tool adjustment system that can adjust the fluid inlet flow rate and fluid inlet pressure of the auxiliary tool according to different auxiliary tools and gear information, so as to realize targeted pressure and flow rate adjustment for different auxiliary tools of excavators.

[0005] Another object of the present invention is to provide a control method for an excavator including the above-mentioned auxiliary adjustment system to be used in the above-mentioned auxiliary adjustment system.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An assistive device adjustment system, characterized in that it comprises:

[0008] Information acquisition device, used to acquire information about the type of assistive device connected to the assistive device adjustment system and the current gear position;

[0009] A main valve assembly is used to connect to the auxiliary device and provide hydraulic oil to the auxiliary device; the main valve assembly includes a first relief valve, a second relief valve and a directional valve, the inlet of the directional valve is connected to the pump assembly, the return port of the directional valve is used to connect to the return oil tank, the first port of the directional valve is connected to the first relief valve, and the second port of the directional valve is connected to the second relief valve.

[0010] A control valve assembly, connected to the main valve assembly, is used to control the flow direction of hydraulic oil in the main valve assembly;

[0011] A pump assembly for supplying hydraulic oil to the main valve assembly;

[0012] The controller is used to obtain the standard flow rate and standard pressure of the auxiliary tool and the standard hydraulic oil flow direction based on the type information of the auxiliary tool; and to adjust the opening degree of the first relief valve and the second relief valve, the programmed torque value of the pump assembly 1, and the operation of the control valve assembly based on the standard pressure, the standard flow rate, the standard hydraulic oil flow direction, and the gear information.

[0013] The first overflow valve, the second overflow valve, and the control valve assembly are all connected to the controller.

[0014] Optionally, it also includes an operating handle. The information acquisition device includes a direction acquisition unit for acquiring the yaw direction information of the handle. The direction acquisition unit transmits the acquired yaw direction information to the controller. The controller controls the control valve assembly to operate according to the yaw direction information to adjust the hydraulic oil flow direction in the main valve assembly.

[0015] Optionally, the system further includes a testing device connected to the main valve assembly. The testing device includes a first flow rate sensor for acquiring the inlet flow rate of the auxiliary device and a first pressure sensor for acquiring the inlet pressure of the auxiliary device.

[0016] Optionally, the device further includes a display device for displaying the standard inlet flow rate, real-time inlet flow rate, standard inlet pressure, and real-time inlet pressure of the assistive device.

[0017] Optionally, the control valve assembly includes a first solenoid valve and a second solenoid valve; when the first solenoid valve is energized, the first relief valve discharges oil and the second relief valve returns oil; when the second solenoid valve is energized, the first relief valve returns oil and the second relief valve discharges oil.

[0018] Optionally, the information acquisition device includes a touch screen, which is equipped with virtual buttons for assistive device types and virtual buttons for gear positions.

[0019] An excavator comprising the auxiliary adjustment system described in any of the preceding claims.

[0020] A control method, applied to the assistive device adjustment system described in any one of the above claims, the control method comprising:

[0021] Obtain information about the type of assistive device connected to the assistive device adjustment system and its current gear position;

[0022] Based on the type information of the auxiliary tool, the standard flow rate information, standard pressure information, and standard hydraulic oil flow direction of the auxiliary tool are obtained;

[0023] The control valve assembly is controlled to operate according to the type information of the auxiliary device, so that the flow direction of the hydraulic oil in the main valve assembly matches the standard hydraulic oil flow direction of the auxiliary device.

[0024] The program torque value of the pump assembly is controlled and adjusted according to the standard flow rate and the gear information so that the liquid inlet flow rate of the auxiliary device is the standard flow rate;

[0025] The opening degrees of the first overflow valve and the second overflow valve are controlled and adjusted according to the standard pressure and the gear information so that the liquid inlet pressure of the auxiliary device is the standard pressure.

[0026] Optionally, the assistive device adjustment system further includes a testing device and an engine. The testing device is connected to the main valve assembly. The testing device includes a first flow detection element for acquiring the inlet flow rate of the assistive device and a first pressure detection element for acquiring the inlet pressure of the assistive device.

[0027] After obtaining the type information of the assistive device connected to the assistive device adjustment system and the current gear information, the process includes:

[0028] The preset pressure range and preset flow range corresponding to the assistive device are obtained based on the type information of the assistive device;

[0029] The first test torque value of the engine of the auxiliary adjustment system and the second test torque value of the pump assembly are preset according to the gear information.

[0030] Adjust the outlet pressure of the pump assembly, and record the inlet flow rate and inlet pressure of the auxiliary device corresponding to the outlet pressure;

[0031] Determine whether the inlet flow rate of the auxiliary device is within the preset flow rate range and the inlet pressure of the auxiliary device is within the preset pressure range simultaneously. If yes, the inlet flow rate of the auxiliary device is the standard flow rate information and the inlet pressure of the auxiliary device is the standard pressure information. If not, reset the first test torque value of the engine of the auxiliary device adjustment system and the second test torque value of the pump assembly; and return to the step of adjusting the outlet pressure of the pump assembly and recording the inlet flow rate and inlet pressure of the auxiliary device corresponding to the outlet pressure.

[0032] Optionally, the assistive device adjustment system further includes an operating handle, and the information acquisition device includes a direction acquisition unit for acquiring information on the deflection direction of the handle; the control method further includes:

[0033] Obtain the yaw direction information of the operating handle;

[0034] The control valve assembly is controlled to operate according to the yaw direction information in order to adjust the hydraulic oil flow direction in the main valve assembly.

[0035] This invention provides an assistive device adjustment system, including an information acquisition device, a main valve assembly, a control valve assembly, a pump assembly, and a controller. The information acquisition device acquires information about the type of assistive device connected to the adjustment system and its current gear position. The main valve assembly connects to the assistive device and provides hydraulic oil to it. The main valve assembly includes a first relief valve, a second relief valve, and a directional valve. The inlet of the directional valve is connected to the pump assembly, the return port of the directional valve is connected to a return oil tank, and the first port of the directional valve is connected to the first relief valve. The second interface is connected to the second relief valve; the control valve assembly is connected to the main valve assembly and is used to control the flow direction of hydraulic oil in the main valve assembly; the pump assembly is used to supply hydraulic oil to the main valve assembly; the controller is used to obtain the standard flow rate and standard pressure of the auxiliary tool and the standard hydraulic oil flow direction based on the type information of the auxiliary tool; and to adjust the opening degree of the first relief valve and the second relief valve, the program torque value of the pump assembly, and the action of the control valve assembly based on the standard pressure, standard flow rate, standard hydraulic oil flow direction, and gear information; the first relief valve, the second relief valve, and the control valve assembly are all connected to the controller.

[0036] In practical use, since the auxiliary device adjustment system can be connected to different types of auxiliary devices, the process involves several steps. First, it's necessary to obtain information about the type of auxiliary device connected to the system and its current gear position. Then, based on the auxiliary device type information, the system obtains the standard flow rate, standard pressure, and standard hydraulic oil flow direction of the auxiliary device. Next, based on the auxiliary device type information, the system controls the operation of the control valve assembly to ensure that the hydraulic oil flow direction in the main valve assembly matches the standard hydraulic oil flow direction of the auxiliary device. Based on the standard flow rate and gear position information, the system controls the programmed torque value of the regulating pump assembly to ensure that the auxiliary device's inlet flow rate is the standard flow rate. Finally, based on the standard pressure and gear position information, the system controls the opening of the first and second relief valves to ensure that the auxiliary device's inlet pressure is the standard pressure.

[0037] In this invention, the inlet pressure and flow rate of different auxiliary tools can be adjusted according to the specific usage requirements of the auxiliary tools. Furthermore, based on the preset standard pressure and flow rate, the auxiliary tools can operate under standard pressure and flow rate, meeting the different pressure and flow rate requirements of different auxiliary tools. This can effectively improve the operating speed of the auxiliary tools, maximize their function, and extend their service life.

[0038] Furthermore, the present invention also provides a control method for an excavator including the above-mentioned assistive device adjustment system to be applied to the above-mentioned assistive device adjustment system. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of a specific embodiment of the assistive device adjustment system provided by the present invention;

[0041] Figure 2 This is a schematic diagram of a specific embodiment two of the assistive device adjustment system provided by the present invention;

[0042] Figure 3 This is a flowchart illustrating the control method provided by the present invention.

[0043] Figures 1-3 middle:

[0044] 1 represents the pump assembly;

[0045] 11 is the main pump, and 12 is the gear pump;

[0046] 2 is the main valve assembly;

[0047] 21 is the first relief valve, 22 is the second relief valve, and 23 is the directional valve;

[0048] 3 represents the control valve assembly;

[0049] 31 is the first solenoid valve, and 32 is the second solenoid valve;

[0050] 4 is the controller;

[0051] 5 represents the display device;

[0052] 6 is the operating handle;

[0053] 7 represents the testing device. Detailed Implementation

[0054] 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 only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] The core of this invention is to provide an auxiliary tool adjustment system that can adjust the fluid inlet flow rate and fluid inlet pressure of the auxiliary tool according to different auxiliary tools and gear information, so as to realize targeted pressure and flow rate adjustment for different auxiliary tools of excavators.

[0056] Another object of the present invention is to provide a control method for an excavator including the above-mentioned auxiliary adjustment system to be used in the above-mentioned auxiliary adjustment system.

[0057] Please refer to Figures 1 to 3 .

[0058] This specific embodiment provides an assistive device adjustment system, including an information acquisition device, a main valve assembly 2, a control valve assembly 3, a pump assembly 1, and a controller 4. The information acquisition device acquires information about the type of assistive device connected to the assistive device adjustment system and its current gear position. The main valve assembly 2 connects to the assistive device and provides hydraulic oil to it. The main valve assembly 2 includes a first relief valve 21, a second relief valve 22, and a directional valve 23. The inlet of the directional valve 23 is connected to the pump assembly 1, the return port of the directional valve 23 is connected to a return oil tank, and the first interface of the directional valve 23 is connected to the first relief valve 21 for reversing. The second port of valve 23 is connected to the second relief valve 22; the control valve assembly 3 is connected to the main valve assembly 2 and is used to control the flow direction of hydraulic oil in the main valve assembly 2; the pump assembly 1 is used to supply hydraulic oil to the main valve assembly 2; the controller 4 is used to obtain the standard flow rate and standard pressure of the auxiliary tool and the standard hydraulic oil flow direction according to the type information of the auxiliary tool; and adjust the opening degree of the first relief valve 21 and the second relief valve 22, the program torque value of the pump assembly 1 and the action of the control valve assembly 3 according to the standard pressure, standard flow rate, standard hydraulic oil flow direction and gear information; the first relief valve 21, the second relief valve 22 and the control valve assembly 3 are all connected to the controller 4.

[0059] In practical use, since the auxiliary device adjustment system can be connected to different types of auxiliary devices, the process involves several steps. First, it is necessary to obtain information about the type of auxiliary device connected to the system and its current gear position. Then, based on the auxiliary device type information, the standard flow rate, standard pressure, and standard hydraulic oil flow direction of the auxiliary device are obtained. Next, the control valve assembly 3 is activated according to the auxiliary device type information to ensure that the hydraulic oil flow direction in the main valve assembly 2 matches the standard hydraulic oil flow direction of the auxiliary device. Based on the standard flow rate and gear position information, the programmed torque value of the regulating pump assembly 1 is controlled to ensure that the auxiliary device's inlet flow rate is the standard flow rate. Finally, based on the standard pressure and gear position information, the opening of the first relief valve 21 and the second relief valve 22 is controlled to ensure that the auxiliary device's inlet pressure is the standard pressure.

[0060] It should be noted that different models of the same type of assistive device have different type information in this application, so as to facilitate control over different models of the same type of assistive device.

[0061] In addition, to shorten the adjustment time during actual use, the auxiliary device needs to be tested before actual use. This involves obtaining information such as the program torque value of pump assembly 1 corresponding to the standard flow rate and standard pressure of the auxiliary device at different gear settings, the engine torque value in the auxiliary device adjustment system, the outlet flow rate of pump assembly 1, the opening degree of the first overflow valve 21, the opening degree of the second overflow valve 22, and the discharge direction of the main valve assembly 2. This information is then stored in a system corresponding to the program torque value of pump assembly 1 corresponding to the standard flow rate and standard pressure of the auxiliary device, and the engine torque value in the auxiliary device adjustment system. Information such as torque value, outlet flow rate of pump assembly 1, opening degree of first overflow valve 21, opening degree of second overflow valve 22, and discharge direction of main valve assembly 2 can be directly adjusted according to the type and gear information of the auxiliary device. This allows the inlet pressure and flow rate of the auxiliary device to be quickly adjusted to the standard pressure and flow rate.

[0062] In this specific embodiment, the inlet pressure and flow rate of the auxiliary tool can be adjusted according to the specific usage requirements of the auxiliary tool. Furthermore, based on the preset standard pressure and flow rate, the auxiliary tool can operate under standard pressure and flow rate, meeting the different pressure and flow rate requirements of different auxiliary tools. This can effectively improve the operating speed of the auxiliary tool, maximize its function, and extend its service life.

[0063] In one specific embodiment, the assistive device adjustment system further includes an operating handle 6, and the information acquisition device includes a direction acquisition unit for acquiring the yaw direction information of the handle. The direction acquisition unit transmits the acquired yaw direction information to the controller 4. The controller 4 controls the control valve assembly 3 to operate according to the yaw direction information to adjust the hydraulic oil flow direction in the main valve assembly 2.

[0064] In actual use, such as Figure 1 As shown, specifically, when the operating handle 6 is tilted to the right, the controller 4 controls the main pump 11 to supply oil to the P1 port of the directional valve 23. At the same time, through the action of the first solenoid valve 31, the valve core of the directional valve 23 slides to the left to the left position. The hydraulic oil circuit supplies oil to the auxiliary tool through the BO port, while the oil circuit returns oil through the AO port. When the operating handle 6 is tilted to the left, the controller 4 controls the main pump 11 to supply oil to the P1 port of the directional valve 23. At the same time, through the action of the second solenoid valve 32, the valve core of the directional valve 23 slides to the right to the right position. The hydraulic oil circuit supplies oil to the auxiliary tool through the AO port, while the oil circuit returns oil through the BO port.

[0065] Of course, the operating handle 6 can also include other directions of tilting, depending on the actual situation, which will not be elaborated here.

[0066] In one specific embodiment, the assistive device adjustment system may further include a testing device 7, which is connected to the main valve assembly 2. The testing device 7 includes a first flow rate detector for acquiring the inlet flow rate of the assistive device and a first pressure detector for acquiring the inlet pressure of the assistive device.

[0067] In practical use, when encountering a new assistive device and the database does not store the relevant information for this device, the relevant values ​​for the assistive device at different settings can be obtained through experimentation. The specific steps are as follows:

[0068] The first step is to obtain information about the type of assistive device and its current gear position.

[0069] The second step is to obtain the preset pressure range and preset flow range of the assistive device based on the type of assistive device information;

[0070] In the second step, the preset pressure range and preset flow range of the assistive device can be obtained from the device's instruction manual.

[0071] The third step is to adjust the first test torque value of the engine in the auxiliary adjustment system and the second test torque value of the pump assembly 1.

[0072] Fourth step, record the outlet pressure of pump assembly 1, the inlet flow rate of the auxiliary device, and the inlet pressure of the auxiliary device under the current second test torque value;

[0073] Fifth step: Determine whether the fluid inlet flow rate of the auxiliary device is within the preset flow rate range and the fluid inlet pressure of the auxiliary device is within the preset pressure range simultaneously. If yes, record the current first test torque value, second test torque value, opening degree of the first overflow valve 21, and opening degree of the second overflow valve 22. If no, proceed to the next step.

[0074] If both the inlet flow rate and the inlet pressure of the auxiliary device are within the preset flow rate and preset pressure range, then the current inlet flow rate and inlet pressure of the auxiliary device meet the usage requirements. The current inlet flow rate and inlet pressure of the auxiliary device can be set to the standard flow rate and the current inlet pressure of the auxiliary device can be set to the standard pressure. Record the first test torque value, the second test torque value, the first opening degree of the first overflow valve 21, and the second opening degree of the second overflow valve 22 at this time. When using this auxiliary device again, adjust the engine to the first test torque value, adjust the pump assembly 1 to the second test torque value, adjust the opening degree of the first overflow valve 21 to the first opening degree, and adjust the opening degree of the second overflow valve 22 to the second opening degree, so that the inlet flow rate and inlet pressure of the auxiliary device are the standard flow rate and the inlet pressure of the auxiliary device.

[0075] Step 6: Readjust the first test torque value of the engine in the auxiliary adjustment system and readjust the second test torque value of the pump assembly 1, and return to step 4.

[0076] It should be noted that the above steps are experimental steps for the same gear information. For different gear information, after adjusting the gear information, you can repeat the first to sixth steps above to complete the data recording under different gear information conditions and store the relevant data information that meets the requirements in the database.

[0077] It should be noted that, for different auxiliary devices, the types of auxiliary devices include those with one-way oil inlet and those with oil inlet from both sides. The hydraulic oil flow direction of the main valve assembly 2 should be adjusted according to the type of auxiliary device.

[0078] In practical use, for different gear information, during the actual execution of steps one through six above, when the auxiliary adjustment system is applied to the excavator, the final calibrated torque value for each gear needs to meet the following requirements:

[0079] Level 4 (100% pressure, 100% flow) meets performance requirements; Level 5 (90% pressure, 90% flow) meets performance requirements; Level 6 (90% pressure, 80% flow) meets performance requirements; Level 7 (80% pressure, 70% flow) meets performance requirements; Level 8 (80% pressure, 60% flow) meets performance requirements; Level 9 (70% pressure, 50% flow) meets performance requirements; Level 10 (60% pressure, 40% flow) meets performance requirements.

[0080] Based on the above embodiments, the assistive device adjustment system may also include a display device 5, which is used to display the standard inlet flow rate, real-time inlet flow rate, standard inlet pressure and real-time inlet pressure of the assistive device.

[0081] In actual use, the standard inlet flow rate, real-time inlet flow rate, standard inlet pressure, and real-time inlet pressure of the assistive device are displayed on the display device 5, which makes it convenient for staff to observe the inlet flow rate and inlet pressure of the assistive device in a timely manner.

[0082] In one specific embodiment, the control valve assembly 3 may include a first solenoid valve 31 and a second solenoid valve 32. When the first solenoid valve 31 is energized, the first relief valve 21 discharges oil and the second relief valve 22 returns oil. When the second solenoid valve 32 is energized, the first relief valve 21 returns oil and the second relief valve 22 discharges oil. By controlling the on / off state of the first solenoid valve 31 and the second solenoid valve 32, the oil discharge direction of the control valve assembly 3 can be controlled.

[0083] like Figure 1 , Figure 2As shown, the pump assembly 1 may include a main pump 11 and a gear pump 12. In actual use, the flow rate discharged by the main pump 11 is controlled by the controller 4 to achieve the flow rate required for the auxiliary function.

[0084] The information acquisition device may include a touch screen, which is equipped with virtual buttons for assistive device types and gear positions. By touching the virtual buttons, users can select and input information about the type and gear position of the assistive device.

[0085] It should be noted that in actual use, when adjusting the hydraulic pressure of the regulating device for the opening of the first relief valve 21 and the second relief valve 22 via controller 4, the adjustment is generally based on the percentage difference between the minimum and maximum pressure of the directional control valve 23. If the minimum is set to 0% and the maximum to 100%, the actual working pressure will be too low. We have optimized the program by setting the intermediate pressure to 0% and the maximum pressure to 100%, which better adapts to the actual operating conditions of the excavator. Generally, the maximum pressure is the main relief pressure of the directional control valve 23.

[0086] When adjusting the auxiliary tool's inlet flow rate by controlling the flow rate discharged from the main pump 11 via controller 4, this adjustment is based on the percentage difference between the main pump 11's minimum and maximum displacement. If the minimum displacement is set to 0% and the maximum displacement to 100%, the actual flow rate will be too low. We optimized the program by setting the intermediate displacement to 0% and the maximum displacement to 100%, which better adapts to the excavator's actual operating conditions.

[0087] In addition to the aforementioned auxiliary adjustment system, the present invention also provides an excavator including the aforementioned auxiliary adjustment system. For the structure of other parts of the excavator, please refer to the prior art, which will not be repeated here.

[0088] In addition to the assistive device adjustment system described above, the present invention also provides a control method for the assistive device adjustment system disclosed in the above embodiments, the control method comprising:

[0089] Step S1: Obtain information on the type of assistive device connected to the assistive device adjustment system and the current gear position.

[0090] Step S2: Obtain the standard flow rate information, standard pressure information, and standard hydraulic oil flow direction of the auxiliary tool based on the type information of the auxiliary tool;

[0091] Step S3: Control the operation of the control valve assembly 3 according to the type information of the auxiliary tool so that the flow direction of the hydraulic oil in the main valve assembly 2 matches the standard of the hydraulic oil flow direction of the auxiliary tool.

[0092] Step S4: Control the program torque value of the pump assembly 1 according to the standard flow rate and gear information so that the inlet flow rate of the auxiliary device is the standard flow rate.

[0093] Step S5: Control and adjust the opening of the first overflow valve 21 and the second overflow valve 22 according to the standard pressure and gear information so that the liquid inlet pressure of the auxiliary device is the standard pressure.

[0094] When the assistive device adjustment system also includes a testing device 7 and an engine, the testing device 7 is connected to the main valve assembly 2, and the testing device 7 includes a first flow rate sensor for acquiring the inlet flow rate of the assistive device and a first pressure sensor for acquiring the inlet pressure of the assistive device; after step S1, the following steps are included:

[0095] Step S11: Obtain the preset pressure range and preset flow range corresponding to the assistive device based on the type information of the assistive device;

[0096] Step S12: Preset the first test torque value of the engine of the auxiliary adjustment system and the second test torque value of the pump assembly 1 according to the gear position information;

[0097] Step S13: Adjust the outlet pressure of pump assembly 1 and record the inlet flow rate and inlet pressure of the auxiliary device corresponding to the outlet pressure.

[0098] Step S14: Determine whether the fluid inlet flow rate of the auxiliary device is within the preset flow rate range and the fluid inlet pressure of the auxiliary device is within the preset pressure range simultaneously. If yes, the fluid inlet flow rate of the auxiliary device is the standard flow rate information and the fluid inlet pressure of the auxiliary device is the standard pressure information. If no, reset the first test torque value of the engine of the auxiliary device adjustment system and the second test torque value of the pump assembly 1, and return to step S13.

[0099] When the assistive device adjustment system further includes an operating handle 6, and the information acquisition device includes a direction acquisition unit for acquiring information on the yaw direction of the handle; the control method further includes:

[0100] Step S101: Obtain the yaw direction information of the operating handle 6;

[0101] Step S102: Control the control valve assembly 3 to operate according to the yaw direction information, so as to adjust the hydraulic oil flow direction in the main valve assembly 2.

[0102] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this invention is within the scope of protection of this invention and will not be elaborated upon here.

[0103] The foregoing has provided a detailed description of the auxiliary tool adjustment system, excavator, and control method provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. An assistive device adjustment system, characterized in that, include: Information acquisition device, used to acquire information about the type of assistive device connected to the assistive device adjustment system and the current gear position; The main valve assembly (2) is used to connect to the auxiliary tool and provide hydraulic oil to the auxiliary tool; the main valve assembly (2) includes a first relief valve (21), a second relief valve (22) and a reversing valve (23), the inlet of the reversing valve (23) is connected to the pump assembly (1), the return port of the reversing valve (23) is used to connect to the return oil tank, the first interface of the reversing valve (23) is connected to the first relief valve (21), and the second interface of the reversing valve (23) is connected to the second relief valve (22); The control valve assembly (3) is connected to the main valve assembly (2) and is used to control the flow direction of hydraulic oil in the main valve assembly (2); Pump assembly (1) for supplying hydraulic oil to the main valve assembly (2); The controller (4) is used to obtain the standard flow rate and standard pressure of the auxiliary tool and the standard hydraulic oil flow direction according to the type information of the auxiliary tool; and to adjust the opening degree of the first relief valve (21) and the second relief valve (22), the program torque value of the pump assembly (1) and the operation of the control valve assembly (3) according to the standard pressure, the standard flow rate, the standard hydraulic oil flow direction and the gear information. The first overflow valve (21), the second overflow valve (22), and the control valve assembly (3) are all connected to the controller (4); It also includes an operating handle (6), and the information acquisition device includes a direction acquisition unit for acquiring the yaw direction information of the handle. The direction acquisition unit transmits the acquired yaw direction information to the controller (4). The controller (4) controls the control valve assembly (3) to operate according to the yaw direction information in order to adjust the hydraulic oil flow direction in the main valve assembly (2).

2. The assistive device adjustment system according to claim 1, characterized in that, It also includes a testing device (7), which is connected to the main valve assembly (2). The testing device (7) includes a first flow detection element for obtaining the inlet flow rate of the auxiliary device and a first pressure detection element for obtaining the inlet pressure of the auxiliary device.

3. The assistive device adjustment system according to claim 1, characterized in that, It also includes a display device (5), which is used to display the standard inlet flow rate, real-time inlet flow rate, standard inlet pressure and real-time inlet pressure of the auxiliary device.

4. The assistive device adjustment system according to claim 1, characterized in that, The control valve assembly (3) includes a first solenoid valve (31) and a second solenoid valve (32); when the first solenoid valve (31) is energized, the first relief valve (21) discharges oil and the second relief valve (22) returns oil; when the second solenoid valve (32) is energized, the first relief valve (21) returns oil and the second relief valve (22) discharges oil.

5. The assistive device adjustment system according to claim 1, characterized in that, The information acquisition device includes a touch screen, which is equipped with virtual buttons for assistive device types and virtual buttons for gear positions.

6. An excavator, characterized in that, Includes the assistive device adjustment system as described in any one of claims 1-5.

7. A control method, characterized in that, The control method, applied to the assistive device adjustment system according to any one of claims 1-5, comprises: Obtain information about the type of assistive device connected to the assistive device adjustment system and its current gear position; Based on the type information of the auxiliary tool, the standard flow rate information, standard pressure information, and standard hydraulic oil flow direction of the auxiliary tool are obtained; The control valve assembly (3) is controlled to operate according to the type information of the auxiliary device, so that the flow direction of the hydraulic oil in the main valve assembly (2) matches the standard of the hydraulic oil flow direction of the auxiliary device; The program torque value of the pump assembly (1) is controlled and adjusted according to the standard flow rate and the gear information so that the liquid inlet flow rate of the auxiliary device is the standard flow rate; The opening of the first overflow valve (21) and the second overflow valve (22) are controlled and adjusted according to the standard pressure and the gear information so that the liquid inlet pressure of the auxiliary device is the standard pressure.

8. The control method according to claim 7, characterized in that, The assistive device adjustment system also includes a test device (7) and an engine. The test device (7) is connected to the main valve assembly (2). The test device (7) includes a first flow detection element for obtaining the inlet flow rate of the assistive device and a first pressure detection element for obtaining the inlet pressure of the assistive device. After obtaining the type information of the assistive device connected to the assistive device adjustment system and the current gear information, the process includes: The preset pressure range and preset flow range corresponding to the assistive device are obtained based on the type information of the assistive device; The first test torque value of the engine of the auxiliary adjustment system and the second test torque value of the pump assembly (1) are preset according to the gear information. Adjust the outlet pressure of the pump assembly (1), and record the inlet flow rate and inlet pressure of the auxiliary device corresponding to the outlet pressure; Determine whether the inlet flow rate of the auxiliary device is within the preset flow range and the inlet pressure of the auxiliary device is within the preset pressure range simultaneously. If yes, the inlet flow rate of the auxiliary device is the standard flow rate information and the inlet pressure of the auxiliary device is the standard pressure information. If no, reset the first test torque value of the engine of the auxiliary device adjustment system and the second test torque value of the pump assembly (1). Then return to adjust the outlet pressure of the pump assembly (1) and record the inlet flow rate and inlet pressure of the auxiliary device corresponding to the outlet pressure.

9. The control method according to claim 7, characterized in that, The assistive device adjustment system also includes an operating handle (6), and the information acquisition device includes a direction acquisition unit for acquiring information on the yaw direction of the handle; the control method further includes: Obtain the yaw direction information of the operating handle (6); The control valve assembly (3) is controlled to operate according to the yaw direction information in order to adjust the hydraulic oil flow direction in the main valve assembly (2).

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