One-key lifting and one-key leveling function control method for electric loader

Abstract

The invention discloses a one-key lifting and one-key leveling function control method for an electric loader, and belongs to the technical field of electric loaders. According to the method, the ECU is awakened, the whole vehicle program operation firstly enters an initialized state, the ECU detects whether the pilot handle is located at the center position or not, and when the pilot handle is located at the center position, the ECU detects that the one-key lifting or one-key leveling button is pressed down, the ECU controls the electric control multi-way valve to execute corresponding actions, and the whole vehicle program operation enters the initialized state. And an ECU (Electronic Control Unit) controls the electric control multi-way valve to stop executing related actions when the pilot handle is not in the central position or the scram button is pressed in the executing process of controlling the bucket control oil cylinder and the large arm control oil cylinder to execute related operations and realizing the one-key lifting of the large arm and the one-key leveling of the bucket, and the ECU controls the electric control multi-way valve to stop executing related actions when the pilot handle is not in the central position or the scram button is pressed in the executing process. The electric control multi-way valve is controlled through the ECU, one-key lifting or one-key leveling of the electric loader is achieved, and the electrification and intelligence level of the electric loader is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric loaders, and in particular to a method for controlling one-key lifting and one-key leveling functions of an electric loader. Background Art

[0002] A loader is a type of earthwork machinery widely used in construction projects such as roads, railways, buildings, hydropower, ports, and mines. It is mainly used to shovel bulk materials such as soil, sand, lime, and coal. It can also perform light shoveling operations on ore, hard soil, etc. By replacing different auxiliary working devices, it can also perform bulldozing, lifting, and loading and unloading of other materials such as wood.

[0003] With the gradual approach of the national "dual carbon" strategy, electric construction machinery has gradually emerged in the field of new energy. Electric loaders are typical representatives of electric construction machinery. With the development in recent years, the technology of electric loaders has been gradually iterated, and electric loaders have gradually developed from the previous basic functions to automation and intelligence. However, the lifting and lowering actions of the existing electric loaders are still achieved by controlling the multi-way valve with a pilot valve. The control method of the hydraulic system of the electric loader has not been improved much compared with that of traditional fuel vehicles. The main reason is that the power of the oil pump has been changed from the original engine to the upper motor. The control of its oil circuit is still based on the control of the traditional valve, which is a simple physical control method. The electrification and automation level of the entire oil circuit control is not high, which seriously restricts the diversification and flexibility of the arm control. Summary of the invention

[0004] 1. Technical problem to be solved by the invention

[0005] The purpose of the present invention is to solve the problem that the electrification and automation levels of the hydraulic system control mode of the existing electric loader are not high.

[0006] 2. Technical solution

[0007] In order to achieve the above object, the technical solution provided by the present invention is:

[0008] A one-key lifting and one-key leveling function control method for an electric loader of the present invention comprises the following specific steps:

[0009] S1, the vehicle ECU wakes up, and the vehicle program enters variable initialization;

[0010] S2, the vehicle ECU detects whether the pilot handle is in the center position. When the pilot handle is not in the center position, step S3 is executed. When the pilot handle is in the center position, step S4 is executed.

[0011] S3, the hydraulic system control mode enters the manual mode, performs corresponding manual operations, and continues to execute step S2;

[0012] S4, the vehicle ECU detects whether the one-touch lift button or the one-touch flat button is pressed; when the one-touch lift button or the one-touch flat button is not pressed, continue to step S2; when the one-touch lift button or the one-touch flat button is pressed, execute step S5;

[0013] S5, the hydraulic system control mode enters the automatic mode and performs corresponding operations;

[0014] S6. The vehicle ECU detects whether the pilot handle is still in the center position or the emergency stop button is pressed. When the pilot handle is not in the center position or the emergency stop button is pressed, continue to execute step S2. When the pilot handle is not in the center position or the emergency stop button is not pressed, continue to execute step S5.

[0015] Preferably, in step S2, when the pilot handle is in the center position, the feedback value detected by the ECU is 1; when the pilot handle is not in the center position, the ECU detects that the AD value of a certain direction of the pilot handle exceeds a set threshold, and the loader hydraulic system control enters manual mode.

[0016] Preferably, in step S5, when a one-touch lifting button is pressed, the hydraulic control system enters automatic mode and the operation executed is step S51; when a one-touch flattening button is pressed, the hydraulic control system enters automatic mode and the operation executed is step S52.

[0017] Preferably, step S51 is specifically as follows: when the vehicle ECU detects that the one-touch lifting button is pressed, the loader ECU will control the boom proportional valve 1 to perform a corresponding action, the boom moves, and the bucket does not move. The gyroscope installed on the boom will feed back the pitch angle f of the boom to the ECU in real time, and the ECU will compare the pitch angle f of the boom with the lifting angle calculated by it. When the pitch angle f fed back by the gyroscope on the boom is greater than or equal to the lifting angle calculated by the ECU, the ECU will control the boom proportional valve 1 to close, and the lifting of the loader boom will stop.

[0018] Preferably, step S52 is specifically as follows: the vehicle ECU detects that the one-touch leveling button is pressed, and the ECU controls bucket proportional valve 1 and bucket proportional valve 2 to make the bucket move first. When the pitch angle g fed back by the gyroscope on the bucket is greater than or equal to the bucket leveling position angle calculated by the ECU, the ECU will control bucket proportional valve 1 and bucket proportional valve 2 to disconnect, and the loader bucket stops moving; after the loader bucket is leveled in place, the ECU controls boom proportional valve 2 to make the loader execute the boom lowering action. When the pitch angle f fed back by the gyroscope on the boom is less than or equal to the boom lowering position angle calculated by the ECU, the ECU controls boom proportional valve 2 to close, and the loader boom stops descending.

[0019] Preferably, the body of the electric loader is equipped with a gyroscope along the horizontal direction of the chassis, and the angle between the body and the horizontal direction is h. The gyroscope is installed on the arm of the electric loader, and the angle between the arm and the horizontal direction is f. The gyroscope is installed on the bucket of the electric loader, and the angle between the bucket and the horizontal direction is g, which is positive in counterclockwise direction and negative in clockwise direction. The maximum angle between the arm and the ground is represented by h_Max, the minimum angle between the arm and the ground is represented by h_Min, and the maximum angle between the bucket and the ground is represented by f_Max. Then the arm is lifted to the position angle of h_Max+h, the bucket is laid flat to the position angle of f_Max+h, and the arm is lowered to the position angle of h_Min+h. The conditions for lifting and lowering are as follows:

[0020] Lifting condition: f≥h_Max+h;

[0021] Conditions for falling into place: f≤h_Min+h and g≥f_Max+h.

[0022] Preferably, the method is carried out using the following system: it includes an electronically controlled multi-way valve, a bucket control cylinder and a boom control cylinder; the electronically controlled multi-way valve includes a proportional valve and a main valve core connected to the proportional valve through a pipeline, and the vehicle ECU is electrically connected to the proportional valve; the bucket control cylinder and the boom control cylinder are respectively connected to the main valve core through pipelines, and a gyroscope is installed on the electric loader.

[0023] Preferably, the proportional valve includes boom proportional valve 1, boom proportional valve 2, bucket proportional valve 1 and bucket proportional valve 2, the boom proportional valve 1 and bucket proportional valve 1 are connected to the vehicle ECU through a circuit, and the boom proportional valve 2 and bucket proportional valve 2 are connected to the vehicle ECU through a circuit.

[0024] Preferably, the main valve core includes a boom main valve core and a bucket main valve core, port one of the boom main valve core is connected to boom proportional valve one through a pipeline, port two of the boom main valve core is connected to boom proportional valve two through a pipeline, port three of the bucket main valve core is connected to bucket proportional valve one through a pipeline, and port four of the bucket main valve core is connected to bucket proportional valve two through a pipeline.

[0025] Preferably, one end of the rod chamber of the bucket control cylinder is connected to the bucket main valve core and one end of the rodless chamber of the bucket control cylinder in sequence through a pipeline.

[0026] Preferably, one end of the rod chamber of the boom control cylinder is connected in series with the boom main valve core and one end of the rodless chamber of the boom control cylinder through a pipeline. The boom control cylinder includes two cylinders, one end of the rod chamber of the two cylinders is connected in parallel through a pipeline, and one end of the rodless chamber of the two cylinders is connected in parallel through a pipeline.

[0027] 3. Beneficial effects

[0028] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0029] The present invention discloses a method for controlling the one-key lifting and one-key leveling functions of an electric loader, and belongs to the technical field of electric loaders. The present invention is awakened by the ECU, and the whole vehicle program operation will first enter the initialization state, and the ECU detects whether the pilot handle is in the center position. When the pilot handle is in the center position, the ECU detects that the one-key lifting or one-key leveling button is pressed, and the ECU will control the electronically controlled multi-way valve to perform corresponding actions, control the bucket control cylinder and the boom control cylinder to perform related operations, and realize one-key lifting of the boom and one-key leveling of the bucket. During the execution process, when the pilot handle is not in the center position or the emergency stop button is pressed, the ECU controls the electronically controlled multi-way valve to stop performing related actions. The present invention controls the electronically controlled multi-way valve through the ECU, realizes one-key lifting or one-key leveling of the electric loader, and improves the electrification and intelligence level of the electric loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a hydraulic system of a one-key lifting and one-key leveling function control system for an electric loader of the present invention;

[0031] Figure 2 A schematic diagram of the angle measurement of the gyroscope installed in the present invention;

[0032] Figure 3 is a flow chart of the method of the present invention;

[0033] Figure 4 The figure is a schematic diagram of the operation principle of the method of the present invention.

[0034] Explanation of the symbols in the schematic diagram:

[0035] 100. Electronically controlled multi-way valve;

[0036] 110, proportional valve; 111, boom proportional valve 1; 112, boom proportional valve 2; 113, bucket proportional valve 1; 114, bucket proportional valve 2;

[0037] 120, main valve core; 121, boom main valve core; a, port 1; b, port 2; 122, bucket main valve core; c, port 3; d, port 4;

[0038] 200, bucket control cylinder; 300, boom control cylinder. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "center", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0042] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0043] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] Example 1

[0046] See attached Figure 1-2 The one-key lifting and one-key leveling function control system of an electric loader of the present embodiment comprises an electric-controlled multi-way valve 100, a bucket control cylinder 200 and a boom control cylinder 300; the electric-controlled multi-way valve 100 comprises a proportional valve 110 and a main valve core 120 connected to the proportional valve 110 through a pipeline, and the proportional valve 110 adjusts the flow of the pipeline where the proportional valve 110 is located by receiving instructions from the vehicle ECU, so that the flow of the pipeline where the main valve core 120 is located changes;

[0047] The bucket control cylinder 200 and the boom control cylinder 300 are respectively connected to the main valve core 120 through pipelines. By changing the flow of the pipeline where the main valve core 120 is located, the extension and retraction of the bucket control cylinder 200 and the boom control cylinder 300 are controlled, thereby controlling the movement of the boom and bucket of the electric loader.

[0048] The proportional valve 110 includes an arm proportional valve 111, an arm proportional valve 112, a bucket proportional valve 113 and a bucket proportional valve 114. The arm proportional valve 111 and the bucket proportional valve 113 are connected to the vehicle ECU through a circuit, receive instructions from the vehicle ECU to adjust their own flow rates, and the arm proportional valve 112 and the bucket proportional valve 114 are connected to the vehicle ECU through a circuit, receive instructions from the vehicle ECU to adjust their own flow rates.

[0049] The main valve core 120 includes a boom main valve core 121 and a bucket main valve core 122. Port a of the boom main valve core 121 is connected to a boom proportional valve 111 through a pipeline. The boom proportional valve 111 receives instructions from the vehicle ECU to adjust the flow of the pipeline where the boom proportional valve 111 is located, thereby changing the flow of the pipeline where the boom main valve core 121 is located to control the boom rise; port b of the boom main valve core 121 is connected to a boom proportional valve 112 through a pipeline. The boom proportional valve 112 receives instructions from the vehicle ECU to adjust the flow of the pipeline where the boom proportional valve 112 is located, thereby changing the flow of the pipeline where the boom main valve core 121 is located. The flow of the pipeline where the bucket main valve core 122 is located is used to control the descent of the boom; the port three c of the bucket main valve core 122 is connected to the bucket proportional valve one 113 through a pipeline, and the bucket proportional valve one 113 receives instructions from the vehicle ECU, adjusts the flow of the pipeline where the bucket proportional valve one 113 is located, thereby changing the flow of the pipeline where the bucket main valve core 122 is located, and controls the bucket excavation; the port four d of the bucket main valve core 122 is connected to the bucket proportional valve two 114 through a pipeline, and the bucket proportional valve two 114 receives instructions from the vehicle ECU, adjusts the flow of the pipeline where the bucket proportional valve two 114 is located, changes the flow of the pipeline where the bucket main valve core 122 is located, and controls the bucket unloading.

[0050] The bucket control cylinder 200 is used to control the bucket. One end of the rod chamber of the bucket control cylinder 200 is connected to the bucket main valve core 122 and one end of the rodless chamber of the bucket control cylinder 200 in sequence through a pipeline. When oil enters the rod chamber, oil flows out of the rodless chamber, and the electric loader bucket unloads the bucket. When oil enters the rodless chamber and oil flows out of the rod chamber, the electric loader bucket tipps.

[0051] One end of the rod chamber of the boom control cylinder 300 is connected in series with the boom main valve core 121 and one end of the rodless chamber of the boom control cylinder 300 through a pipeline. The boom control cylinder 300 includes two cylinders, and one end of the rod chambers of the two cylinders are connected in parallel through a pipeline, and one end of the rodless chambers of the two cylinders are connected in parallel through a pipeline. When oil flows into the rod chamber of the boom control cylinder 300 and oil flows out of the rodless chamber, the boom of the electric loader descends, and when oil flows out of the rod chamber and oil flows into the rodless chamber, the boom of the electric loader rises.

[0052] When the vehicle ECU issues a command for the bucket to unload through the current output pin, the bucket proportional valve 114 receives the command from the vehicle ECU, adjusts the flow of the pipeline where the bucket proportional valve 114 is located, and drives the flow of the pipeline where the bucket main valve core 122 is located to change, so that oil enters one end of the rod chamber of the bucket control cylinder 200 and oil exits one end of the rodless chamber, and the electric loader bucket unloads. When the vehicle ECU needs to perform other operations on the bucket and the arm, the operation process is similar to the above.

[0053] The body of the electric loader is equipped with a gyroscope along the horizontal direction of the chassis, and the angle between the body and the horizontal direction is h. The gyroscope is installed on the arm of the electric loader, and the installation angle of the gyroscope is adjusted so that it can feedback the angle between the arm and the horizontal direction, which is f. The gyroscope is installed on the bucket of the electric loader, and the installation angle of the gyroscope is adjusted so that it can feedback the angle between the bucket and the horizontal direction, which is g. The above three angles are along the horizontal direction, counterclockwise is positive, and clockwise is negative. Assuming that the maximum angle between the arm and the ground is represented by h_Max, the minimum angle between the arm and the ground is represented by h_Min, and the maximum angle between the bucket and the ground is represented by f_Max, then the arm is lifted to the position angle h_Max+h, the bucket is flat to the position angle f_Max+h, and the arm is lowered to the position angle h_Min+h. The conditions for lifting and lowering are as follows:

[0054] Lifting into place condition f≥h_Max+h;

[0055] The conditions for falling into place are f≤h_Min+h and g≥f_Max+h.

[0056] Example 2

[0057] See attached Figure 3-4 The present embodiment provides a method for controlling the one-key lifting and one-key leveling functions of an electric loader. The method is performed using the control system described in Example 1. Specifically,

[0058] S1, the vehicle ECU wakes up, and the vehicle program enters variable initialization;

[0059] S2, the vehicle ECU detects whether the pilot handle is in the center position. When the pilot handle is not in the center position, step S3 is executed. When the pilot handle is in the center position, step S4 is executed.

[0060] S3, the hydraulic system control mode enters the manual mode, performs corresponding manual operations, and continues to execute step S2;

[0061] S4, the vehicle ECU detects whether the one-touch lift button or the one-touch flat button is pressed; when the one-touch lift button or the one-touch flat button is not pressed, continue to step S2; when the one-touch lift button or the one-touch flat button is pressed, execute step S5;

[0062] S5, the hydraulic system control mode enters the automatic mode and performs corresponding operations;

[0063] S6. The vehicle ECU detects whether the pilot handle is still in the center position or the emergency stop button is pressed. When the pilot handle is not in the center position or the emergency stop button is pressed, continue to execute step S2. When the pilot handle is not in the center position or the emergency stop button is not pressed, continue to execute step S5.

[0064] In step S2, when the pilot handle is in the center position, the feedback value detected by the ECU is 1. When the pilot handle is not in the center position, the ECU detects that the AD value of a certain direction of the pilot handle exceeds the set threshold, and the loader hydraulic system control will enter manual mode.

[0065] In step S5, when the one-touch lifting button is pressed, the hydraulic control system enters the automatic mode and the operation executed is step S51. When the one-touch flattening button is pressed, the hydraulic control system enters the automatic mode and the operation executed is step S52.

[0066] Step S51 is specifically as follows: when the vehicle ECU detects that the one-touch lifting button is pressed, the loader ECU will control the boom proportional valve 111 to perform corresponding actions, the boom moves, and the bucket does not move. The gyroscope installed on the boom will feed back the pitch angle f of the boom to the ECU in real time, and the ECU will compare the pitch angle f of the boom with the lifting angle calculated by it. When the pitch angle f fed back by the gyroscope on the boom is greater than or equal to the lifting angle calculated by the ECU, the ECU will control the boom proportional valve 111 to be closed, and the lifting of the loader boom will stop.

[0067] Step S52 is specifically as follows: the vehicle ECU detects that the one-touch leveling button is pressed, and the ECU controls the bucket proportional valve 1 113 and the bucket proportional valve 2 114 to make the bucket move first. When the pitch angle g fed back by the gyroscope on the bucket is less than or equal to the angle calculated by the ECU for the bucket to be leveled, the ECU will control the bucket proportional valve 1 113 and the bucket proportional valve 2 114 to disconnect, and the loader bucket stops moving; after the loader bucket is leveled, the ECU controls the boom proportional valve 2 112 to make the loader execute the boom lowering action. When the pitch angle f fed back by the gyroscope on the boom is less than or equal to the boom lowering angle calculated by the ECU, the ECU controls the boom proportional valve 2 112 to close, and the loader boom stops descending.

[0068] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A one-key lifting and one-key leveling function control method for an electric loader, characterized in that: The method specifically comprises the following steps: S1, the vehicle ECU wakes up, and the vehicle program enters variable initialization; S2, the vehicle ECU detects whether the pilot handle is in the center position. When the pilot handle is not in the center position, step S3 is executed. When the pilot handle is in the center position, step S4 is executed. S3, the hydraulic system control mode enters the manual mode, performs corresponding manual operations, and continues to execute step S2; S4, the vehicle ECU detects whether the one-touch lift button or the one-touch flat button is pressed; when the one-touch lift button or the one-touch flat button is not pressed, continue to step S2; when the one-touch lift button or the one-touch flat button is pressed, execute step S5; S5, the hydraulic system control mode enters the automatic mode and performs corresponding operations; S6. The vehicle ECU detects whether the pilot handle is still in the center position or the emergency stop button is pressed. When the pilot handle is not in the center position or the emergency stop button is pressed, continue to execute step S2. When the pilot handle is not in the center position or the emergency stop button is not pressed, continue to execute step S5.

2. The one-key lifting and one-key leveling function control method of an electric loader according to claim 1, characterized in that: In step S2, when the pilot handle is in the center position, the feedback value detected by the ECU is 1. When the pilot handle is not in the center position, the ECU detects that the AD value of a certain direction of the pilot handle exceeds the set threshold, and the loader hydraulic system control will enter manual mode.

3. The one-key lifting and one-key leveling function control method of an electric loader according to claim 1, characterized in that: In step S5, when the one-touch lifting button is pressed, the hydraulic control system enters the automatic mode and the operation executed is step S51. When the one-touch flattening button is pressed, the hydraulic control system enters the automatic mode and the operation executed is step S52.

4. The one-key lifting and one-key leveling function control method of an electric loader according to claim 3, characterized in that: Step S51 is specifically as follows: when the vehicle ECU detects that the one-touch lifting button is pressed, the loader ECU will control the boom proportional valve 1 (111) to perform corresponding actions, the boom moves, and the bucket does not move. The gyroscope installed on the boom will feed back the boom's pitch angle f to the ECU in real time, and the ECU will compare the boom's pitch angle f with the lifting angle calculated by it. When the pitch angle f fed back by the gyroscope on the boom is greater than or equal to the lifting angle calculated by the ECU, the ECU will control the boom proportional valve 1 (111) to be closed, and the loader boom lifting will stop.

5. The one-key lifting and one-key leveling function control method of an electric loader according to claim 3, characterized in that: Step S52 is specifically as follows: the vehicle ECU detects that the one-touch leveling button is pressed, and the ECU controls the bucket proportional valve 1 (113) and the bucket proportional valve 2 (114) to make the bucket move first. When the pitch angle g fed back by the gyroscope on the bucket is greater than or equal to the angle calculated by the ECU for the bucket to be leveled, the ECU will control the bucket proportional valve 1 (113) and the bucket proportional valve 2 (114) to be disconnected, and the loader bucket stops moving; after the loader bucket is leveled, the ECU controls the boom proportional valve 2 (112) to make the loader execute the boom lowering action. When the pitch angle f fed back by the gyroscope on the boom is less than or equal to the boom lowering angle calculated by the ECU, the ECU controls the boom proportional valve 2 (112) to be closed, and the loader boom stops lowering.

6. A one-key lifting and one-key leveling function control method for an electric loader according to claim 4 or 5, characterized in that: The body of the electric loader is equipped with a gyroscope along the horizontal direction of the chassis, and the angle between the body and the horizontal direction is h. The gyroscope is installed on the arm of the electric loader, and the angle between the arm and the horizontal direction is f. The gyroscope is installed on the bucket of the electric loader, and the angle between the bucket and the horizontal direction is g, which is positive in the counterclockwise direction and negative in the clockwise direction. The maximum angle between the arm and the ground is represented by h_Max, the minimum angle between the arm and the ground is represented by h_Min, and the maximum angle between the bucket and the ground is represented by f_Max. The arm is lifted to the desired angle h_Max+h, the bucket is laid flat to the desired angle f_Max+h, and the arm is lowered to the desired angle h_Min+h. The conditions for lifting and lowering are as follows: Lifting condition: f≥h_Max+h; Conditions for reaching the designated position: f≤h_Min+h and g≥f_Max+h.

7. A one-key lifting and one-key leveling function control method for an electric loader according to any one of claims 1 to 5, characterized in that: The method is carried out using the following system: The invention comprises an electrically controlled multi-way valve (100), a bucket control oil cylinder (200) and a boom control oil cylinder (300); the electrically controlled multi-way valve (100) comprises a proportional valve (110) and a main valve core (120) connected to the proportional valve (110) via a pipeline, and a vehicle ECU is electrically connected to the proportional valve (110); the bucket control oil cylinder (200) and the boom control oil cylinder (300) are respectively connected to the main valve core (120) via a pipeline, and a gyroscope is installed on the electric loader.

8. The one-key lifting and one-key leveling function control method of an electric loader according to claim 7, characterized in that: The proportional valve (110) comprises a boom proportional valve 1 (111), a boom proportional valve 2 (112), a bucket proportional valve 1 (113) and a bucket proportional valve 2 (114); the boom proportional valve 1 (111) and the bucket proportional valve 1 (113) are connected to the vehicle ECU via a circuit, and the boom proportional valve 2 (112) and the bucket proportional valve 2 (114) are connected to the vehicle ECU via a circuit.

9. A one-key lifting and one-key leveling function control method for an electric loader according to claim 8, characterized in that: The main valve core (120) includes a boom main valve core (121) and a bucket main valve core (122), wherein port one (a) of the boom main valve core (121) is connected to boom proportional valve one (111) via a pipeline, port two (b) of the boom main valve core (121) is connected to boom proportional valve two (112) via a pipeline, port three (c) of the bucket main valve core (122) is connected to bucket proportional valve one (113) via a pipeline, and port four (d) of the bucket main valve core (122) is connected to bucket proportional valve two (114) via a pipeline.

10. A one-key lifting and one-key leveling function control method for an electric loader according to claim 9, characterized in that: One end of the rod chamber of the bucket control oil cylinder (200) is connected in series with the bucket main valve core (122) and one end of the rodless chamber of the bucket control oil cylinder (200) via a pipeline.

11. A one-key lifting and one-key leveling function control method for an electric loader according to claim 10, characterized in that: One end of the rod chamber of the boom control oil cylinder (300) is connected in series with the boom main valve core (121) and one end of the rodless chamber of the boom control oil cylinder (300) via a pipeline. The boom control oil cylinder (300) comprises two oil cylinders, one end of the rod chamber of the two oil cylinders is connected in parallel via a pipeline, and one end of the rodless chamber of the two oil cylinders is connected in parallel via a pipeline.

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